[RFC PATCH v7 00/18] kvm/arm: Introduce a customizable aarch64 KVM host model

[RFC PATCH v7 00/18] kvm/arm: Introduce a customizable aarch64 KVM host model

[Eric Auger]

This series enhances the current host KVM model with capability to
set writable ID reg fields. 

Since v6.7 kernel, KVM/arm allows the userspace to overwrite the values
of a subset of ID regs. The list of writable fields continues to grow.
The feature ID range is defined as the AArch64 System register space
with op0==3, op1=={0, 1, 3}, CRn==0, CRm=={0-7}, op2=={0-7}.

The end goal is to get more flexibility when migrating guests
between different host hardware.

QEMU retrieves the writable ID fields from KVM UAPI [1] and
match them against a generated description of ID regs and their
named fields that stem from AARCHMRS Registers.json file.
Current description is based on latest 2026-03 edition.
The content of the generated files was compared against kernel
linux/arch/arm64/tools/sysreg file. It is not straightforward
to have unit tests for python scripts as there are many cases for
field extraction. 

For each writable named field a uint64 property is created
following the "SYSREG_<REG>_<FIELD>" naming convention. REG and
FIELD names are those described in ARM ARM Reference manual.

The list of SYSREG_ID properties can be retrieved through the qmp
monitor using query-cpu-model-expansion [2].

For the record, Jinqian was able to migrate between Hisilicon KunPeng
HIP09 and HIP12 chips with this series using this kind of command:

-cpu host,pauth=off,pmu=off,sve=off,\
SYSREG_ID_AA64PFR1_EL1_NMI=0x0,\
SYSREG_ID_AA64ISAR1_EL1_LS64=0x0,\
SYSREG_ID_AA64ISAR1_EL1_XS=0x0,\
SYSREG_ID_AA64ISAR1_EL1_LRCPC=0x2,\
SYSREG_ID_AA64ISAR2_EL1_RPRFM=0x0,\
SYSREG_ID_AA64ISAR2_EL1_CLRBHB=0x0,\
SYSREG_ID_AA64ISAR2_EL1_PAC_frac=0x0,\
SYSREG_ID_AA64ISAR2_EL1_BC=0x0,\
SYSREG_ID_AA64ISAR2_EL1_RPRES=0x0,\
SYSREG_ID_AA64ISAR2_EL1_WFxT=0x0,\
SYSREG_ID_AA64MMFR0_EL1_FGT=0x0,\
SYSREG_ID_AA64MMFR0_EL1_BigEnd=0x0,\
SYSREG_ID_AA64MMFR1_EL1_ECBHB=0x0,\
SYSREG_ID_AA64MMFR1_EL1_CMOW=0x0,\
SYSREG_ID_AA64MMFR1_EL1_TIDCP1=0x0,\
SYSREG_ID_AA64MMFR1_EL1_nTLBPA=0x0,\
SYSREG_ID_AA64MMFR1_EL1_AFP=0x0,\
SYSREG_ID_AA64MMFR1_EL1_HCX=0x0,\
SYSREG_ID_AA64MMFR1_EL1_ETS=0x0,\
SYSREG_ID_AA64MMFR1_EL1_PAN=0x2,\
SYSREG_ID_AA64MMFR1_EL1_HAFDBS=0x2,\
SYSREG_ID_AA64MMFR2_EL1_CnP=0x0,\
SYSREG_ID_AA64MMFR3_EL1_TCRX=0x0,\
SYSREG_ID_AA64DFR0_EL1_PMUVer=0x6,\
SYSREG_ID_AA64DFR0_EL1_DebugVer=0x9,\
SYSREG_ID_AA64DFR0_EL1_DoubleLock=0xf,\
SYSREG_ID_AA64ZFR0_EL1_F64MM=0x0,\
SYSREG_ID_AA64ZFR0_EL1_F32MM=0x0,\
SYSREG_ID_AA64ZFR0_EL1_SM4=0x0,\
SYSREG_ID_AA64ZFR0_EL1_SHA3=0x0,\
SYSREG_ID_AA64ZFR0_EL1_BitPerm=0x0,\
SYSREG_ID_AA64ZFR0_EL1_AES=0x0,\
SYSREG_ID_AA64ZFR0_EL1_SVEver=0x0,\
SYSREG_CTR_EL0_L1Ip=0x2 \

Connie & Eric

This series can be found at:
https://github.com/eauger/qemu/tree/arm-cpu-model-v7

History:
--------
v6 -> v7:
- query-cpu-model-expansion now applies the sysreg props
  onto a scratch vcpu (POC) allowing a finer validation of settings
  (not perfect though as init may be revisited depending on
  settings)
- Properly handle ValueRange (Khushit)
- Remove cpu parameter in get_host_cpu_idregs call chain
  (Khushit)

v5 -> v6:
v6 is mostly for Khushit to see how he may work on top
of this series. It fulfills some of his requirements:
- Upon Khushit request I added description for enum values
  and reserved fields
- set_sysreg_prop checks the input value against enum values
  if any
- writable_bitmap is now dispatched into the sysreg descripton
  and not stored in vcpu state anymore (besides it is VM wide)
- implemented write for qmp inspection. However this is not
  yet checked against KVM. That's the next step I think, ie.
  instantiate a scratch vcpu to test if the field value can be
  applied?
- if some inconsistencies between writable mask and idreg
  field, reserved fields only produce traces
- this version does not yet fix some reported issues about host
  supporting nested virt. I will further sync with Khushit.
  so this is definitively not candidate to be applied, hence the
  RFC tag.

Cornelia Huck (3):
  target/arm/kvm: Retrieve writable ID reg map
  arm/cpu-features: document ID reg properties
  arm-qmp-cmds: introspection for ID register props

Eric Auger (14):
  scripts: introduce scripts/update-aarch64-cpu-sysregs-header.py
  target/arm/cpu-sysregs.h.inc: Sort by name alphabetical order
  target/arm/cpu-sysregs.h.inc: Update with automatic generation
  arm/cpu: Add infra to handle generated ID register definitions
  scripts: Introduce scripts/aarch64_sysreg_helpers module
  scripts: Introduce scripts/update-aarch64-cpu-sysreg-properties.py
  target/arm/cpu-idregs.h.inc: generate with script
  target/arm/cpu-idregs.h.inc: Generate enum values
  arm/kvm: Initialize all writable ID registers from host
  target/arm/kvm: Introduce kvm_arm_expose_idreg_properties
  target/arm/cpu: Expose writable ID reg field properties on the kvm
    host vcpu model
  target/arm/cpu-idregs.h.inc: Generate reserved fields
  target/arm/kvm: Ignore and trace unexpected writable reserved fields
  target/arm/kvm: add utility to write idregs in scratch vcpu

Shaju Abraham (1):
  target/arm/cpu_idregs: generate tables for Arm64 ID registers and
    fields

 docs/system/arm/cpu-features.rst              |  106 +-
 target/arm/cpu-idregs.h                       |   41 +
 target/arm/kvm_arm.h                          |   13 +
 target/arm/cpu-idregs.h.inc                   | 2164 +++++++++++++++++
 target/arm/cpu-sysregs.h.inc                  |   57 +-
 target/arm/arm-qmp-cmds.c                     |   98 +
 target/arm/cpu-idregs.c                       |   96 +
 target/arm/cpu64.c                            |    5 +
 target/arm/kvm-stub.c                         |    6 +
 target/arm/kvm.c                              |  360 ++-
 scripts/aarch64_sysreg_helpers.py             |  109 +
 .../update-aarch64-cpu-sysreg-properties.py   |  290 +++
 scripts/update-aarch64-cpu-sysregs-header.py  |   51 +
 target/arm/meson.build                        |    1 +
 target/arm/trace-events                       |    8 +
 15 files changed, 3373 insertions(+), 32 deletions(-)
 create mode 100644 target/arm/cpu-idregs.h
 create mode 100644 target/arm/cpu-idregs.h.inc
 create mode 100644 target/arm/cpu-idregs.c
 create mode 100644 scripts/aarch64_sysreg_helpers.py
 create mode 100644 scripts/update-aarch64-cpu-sysreg-properties.py
 create mode 100755 scripts/update-aarch64-cpu-sysregs-header.py

-- 
2.53.0

[RFC PATCH v7 01/18] scripts: introduce scripts/update-aarch64-cpu-sysregs-header.py

[Eric Auger]

Introduce a script that takes as input the Registers.json file
delivered in the AARCHMRS Features Model downloadable from the
Arm Developer A-Profile Architecture Exploration Tools page:
https://developer.arm.com/Architectures/A-Profile%20Architecture#Downloads
and outputs the list of ID regs in target/arm/cpu-sysregs.h.inc
under the form of DEF(<name>, <op0>, <op1>, <crn>, <crm>, <op2>).

We only care about IDregs with opcodes satisfying:
op0 = 3, op1 = {0,1,3}, crn = 0, crm within [0, 7], op2 within [0, 7]

Signed-off-by: Eric Auger <eric.auger@redhat.com>
[CH: note correct op1 range, don't skip CCSIDR]
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Message-ID: <20251208163751.611186-2-eric.auger@redhat.com>
---
 scripts/update-aarch64-cpu-sysregs-header.py | 134 +++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100755 scripts/update-aarch64-cpu-sysregs-header.py

diff --git a/scripts/update-aarch64-cpu-sysregs-header.py b/scripts/update-aarch64-cpu-sysregs-header.py
new file mode 100755
index 0000000000..8c337147dd
--- /dev/null
+++ b/scripts/update-aarch64-cpu-sysregs-header.py
@@ -0,0 +1,134 @@
+#!/usr/bin/env python3
+
+# This script takes as input the Registers.json file delivered in
+# the AARCHMRS Features Model downloadable from the Arm Developer
+# A-Profile Architecture Exploration Tools page:
+# https://developer.arm.com/Architectures/A-Profile%20Architecture#Downloads
+# and outputs the list of ID regs in target/arm/cpu-sysregs.h.inc
+# under the form of DEF(<name>, <op0>, <op1>, <crn>, <crm>, <op2>)
+#
+# Copyright (C) 2026 Red Hat, Inc.
+#
+# Authors: Eric Auger <eric.auger@redhat.com>
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+
+import json
+import os
+import sys
+
+# Some regs have op code values like 000x, 001x. Anyway we don't need
+# them. Besides some regs are undesired in the generated file such as
+# VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we
+# are interested in and are tricky to decode as their system accessor
+# refer to MPIDR_EL1/MIDR_EL1 respectively
+
+skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \
+            'VMPIDR_EL2', 'VPIDR_EL2']
+
+# returns the int value of a given @opcode for a reg @encoding
+def get_opcode(encoding, opcode):
+    fvalue = encoding.get(opcode)
+    if fvalue:
+        value = fvalue.get('value')
+        if isinstance(value, str):
+            value = value.strip("'")
+            value = int(value, 2)
+            return value
+    return -1
+
+def extract_idregs_from_registers_json(filename):
+    """
+    Load a Registers.json file and extract all ID registers, decode their
+    opcode and dump the information in target/arm/cpu-sysregs.h.inc
+
+    Args:
+        filename (str): The path to the Registers.json
+    returns:
+        idregs: list of ID regs and their encoding
+    """
+    if not os.path.exists(filename):
+        print(f"Error: {filename} could not be found!")
+        return {}
+
+    try:
+        with open(filename, 'r') as f:
+            register_data = json.load(f)
+
+    except json.JSONDecodeError:
+        print(f"Could not decode json from '{filename}'!")
+        return {}
+    except Exception as e:
+        print(f"Unexpected error while reading {filename}: {e}")
+        return {}
+
+    registers = [r for r in register_data if isinstance(r, dict) and \
+                r.get('_type') == 'Register']
+
+    idregs = {}
+
+    for register in registers:
+        reg_name = register.get('name')
+
+        is_skipped = any(term in (reg_name or "").upper() for term in skiplist)
+
+        if reg_name and not is_skipped:
+            accessors = register.get('accessors', [])
+
+            for accessor in accessors:
+                type = accessor.get('_type')
+                if type in ['Accessors.SystemAccessor']:
+                    encoding_list = accessor.get('encoding')
+
+                    if isinstance(encoding_list, list) and encoding_list and \
+                       isinstance(encoding_list[0], dict):
+                        encoding_wrapper = encoding_list[0]
+                        encoding_source = encoding_wrapper.get('encodings', \
+                                                               encoding_wrapper)
+
+                        if isinstance(encoding_source, dict):
+                                op0 = get_opcode(encoding_source, 'op0')
+                                op1 = get_opcode(encoding_source, 'op1')
+                                op2 = get_opcode(encoding_source, 'op2')
+                                crn = get_opcode(encoding_source, 'CRn')
+                                crm = get_opcode(encoding_source, 'CRm')
+                                encoding_str=f"{op0} {op1} {crn} {crm} {op2}"
+
+                # ID regs are assumed within this scope
+                if op0 == 3 and (op1 == 0 or op1 == 1 or op1 == 3) and \
+                   crn == 0 and (crm >= 0 and crm <= 7) and (op2 >= 0 and op2 <= 7):
+                    idregs[reg_name] = encoding_str
+
+    return idregs
+
+if __name__ == "__main__":
+    # Single arg expected: the path to the Registers.json file
+    if len(sys.argv) < 2:
+        print("Usage: python scripts/update-aarch64-cpu-sysregs-header.py "
+              "<path_to_registers_json>")
+        sys.exit(1)
+    else:
+        json_file_path = sys.argv[1]
+
+    extracted_registers = extract_idregs_from_registers_json(json_file_path)
+
+    if extracted_registers:
+        output_list = extracted_registers.items()
+
+        # Sort by register name
+        sorted_output = sorted(output_list, key=lambda item: item[0])
+
+        # format lines as DEF(<name>, <op0>, <op1>, <crn>, <crm>, <op2>)
+        final_output = ""
+        for reg_name, encoding in sorted_output:
+            reformatted_encoding = encoding.replace(" ", ", ")
+            final_output += f"DEF({reg_name}, {reformatted_encoding})\n"
+
+        with open("target/arm/cpu-sysregs.h.inc", 'w') as f:
+            f.write("/* SPDX-License-Identifier: GPL-2.0-or-later */\n\n")
+            f.write("/* This file is autogenerated by ")
+            f.write("scripts/update-aarch64-cpu-sysregs-header.py */\n")
+            f.write("/* DEF(<name>, <op0>, <op1>, <crn>, <crm>, <op2>) */\n\n")
+            f.write(final_output)
+        print("updated target/arm/cpu-sysregs.h.inc")
-- 
2.53.0

Re: [RFC PATCH v7 01/18] scripts: introduce scripts/update-aarch64-cpu-sysregs-header.py

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> Introduce a script that takes as input the Registers.json file
> delivered in the AARCHMRS Features Model downloadable from the
> Arm Developer A-Profile Architecture Exploration Tools page:
> https://urldefense.proofpoint.com/v2/url?u=https-3A__developer.arm.com_Architectures_A-2DProfile-2520Architecture-23Downloads&d=DwIDAg&c=s883GpUCOChKOHiocYtGcg&r=PGWMyignA0NiDmTlyP7vOTHozBws_VN86yrVmSMkBp0&m=lD4waTKFTKadaUd2RJE2Iyqgk7AWVWe6ma1KzxM3WJCEAWlSjbLjOsF3Qwitw01Z&s=64zP7lKVmqT2xscs6WzDYytj_k83Sdoo1c8gIIDtD5o&e= 
> and outputs the list of ID regs in target/arm/cpu-sysregs.h.inc
> under the form of DEF(<name>, <op0>, <op1>, <crn>, <crm>, <op2>).
> 
> We only care about IDregs with opcodes satisfying:
> op0 = 3, op1 = {0,1,3}, crn = 0, crm within [0, 7], op2 within [0, 7]
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> [CH: note correct op1 range, don't skip CCSIDR]
> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
> Message-ID: <20251208163751.611186-2-eric.auger@redhat.com>
> ---
> scripts/update-aarch64-cpu-sysregs-header.py | 134 +++++++++++++++++++
> 1 file changed, 134 insertions(+)
> create mode 100755 scripts/update-aarch64-cpu-sysregs-header.py
> 
> diff --git a/scripts/update-aarch64-cpu-sysregs-header.py b/scripts/update-aarch64-cpu-sysregs-header.py
> new file mode 100755
> index 0000000000..8c337147dd
> --- /dev/null
> +++ b/scripts/update-aarch64-cpu-sysregs-header.py
> @@ -0,0 +1,134 @@
> +#!/usr/bin/env python3
> +
> +# This script takes as input the Registers.json file delivered in
> +# the AARCHMRS Features Model downloadable from the Arm Developer
> +# A-Profile Architecture Exploration Tools page:
> +# https://urldefense.proofpoint.com/v2/url?u=https-3A__developer.arm.com_Architectures_A-2DProfile-2520Architecture-23Downloads&d=DwIDAg&c=s883GpUCOChKOHiocYtGcg&r=PGWMyignA0NiDmTlyP7vOTHozBws_VN86yrVmSMkBp0&m=lD4waTKFTKadaUd2RJE2Iyqgk7AWVWe6ma1KzxM3WJCEAWlSjbLjOsF3Qwitw01Z&s=64zP7lKVmqT2xscs6WzDYytj_k83Sdoo1c8gIIDtD5o&e= 
> +# and outputs the list of ID regs in target/arm/cpu-sysregs.h.inc
> +# under the form of DEF(<name>, <op0>, <op1>, <crn>, <crm>, <op2>)
> +#
> +# Copyright (C) 2026 Red Hat, Inc.
> +#
> +# Authors: Eric Auger <eric.auger@redhat.com>
> +#
> +# SPDX-License-Identifier: GPL-2.0-or-later
> +
> +
> +import json
> +import os
> +import sys
> +
> +# Some regs have op code values like 000x, 001x. Anyway we don't need
> +# them. Besides some regs are undesired in the generated file such as
> +# VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we
> +# are interested in and are tricky to decode as their system accessor
> +# refer to MPIDR_EL1/MIDR_EL1 respectively
> +
> +skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \
> +            'VMPIDR_EL2', 'VPIDR_EL2']
> +
> +# returns the int value of a given @opcode for a reg @encoding
> +def get_opcode(encoding, opcode):
> +    fvalue = encoding.get(opcode)
> +    if fvalue:
> +        value = fvalue.get('value')
> +        if isinstance(value, str):
> +            value = value.strip("'")
> +            value = int(value, 2)
> +            return value
> +    return -1
> +
> +def extract_idregs_from_registers_json(filename):
> +    """
> +    Load a Registers.json file and extract all ID registers, decode their
> +    opcode and dump the information in target/arm/cpu-sysregs.h.inc
> +
> +    Args:
> +        filename (str): The path to the Registers.json
> +    returns:
> +        idregs: list of ID regs and their encoding
> +    """
> +    if not os.path.exists(filename):
> +        print(f"Error: {filename} could not be found!")
> +        return {}
> +
> +    try:
> +        with open(filename, 'r') as f:
> +            register_data = json.load(f)
> +
> +    except json.JSONDecodeError:
> +        print(f"Could not decode json from '{filename}'!")
> +        return {}
> +    except Exception as e:
> +        print(f"Unexpected error while reading {filename}: {e}")
> +        return {}
> +
> +    registers = [r for r in register_data if isinstance(r, dict) and \
> +                r.get('_type') == 'Register']
> +
> +    idregs = {}
> +
> +    for register in registers:
> +        reg_name = register.get('name')
> +
> +        is_skipped = any(term in (reg_name or "").upper() for term in skiplist)
> +
> +        if reg_name and not is_skipped:
> +            accessors = register.get('accessors', [])
> +
> +            for accessor in accessors:
> +                type = accessor.get('_type')
> +                if type in ['Accessors.SystemAccessor']:
> +                    encoding_list = accessor.get('encoding')
> +
> +                    if isinstance(encoding_list, list) and encoding_list and \
> +                       isinstance(encoding_list[0], dict):
> +                        encoding_wrapper = encoding_list[0]
> +                        encoding_source = encoding_wrapper.get('encodings', \
> +                                                               encoding_wrapper)
> +
> +                        if isinstance(encoding_source, dict):
> +                                op0 = get_opcode(encoding_source, 'op0')
> +                                op1 = get_opcode(encoding_source, 'op1')
> +                                op2 = get_opcode(encoding_source, 'op2')
> +                                crn = get_opcode(encoding_source, 'CRn')
> +                                crm = get_opcode(encoding_source, 'CRm')
> +                                encoding_str=f"{op0} {op1} {crn} {crm} {op2}"
> +
> +                # ID regs are assumed within this scope
> +                if op0 == 3 and (op1 == 0 or op1 == 1 or op1 == 3) and \
> +                   crn == 0 and (crm >= 0 and crm <= 7) and (op2 >= 0 and op2 <= 7):
> +                    idregs[reg_name] = encoding_str
> +
> +    return idregs
> +
> +if __name__ == "__main__":
> +    # Single arg expected: the path to the Registers.json file
> +    if len(sys.argv) < 2:
> +        print("Usage: python scripts/update-aarch64-cpu-sysregs-header.py "
> +              "<path_to_registers_json>")
> +        sys.exit(1)
> +    else:
> +        json_file_path = sys.argv[1]
> +
> +    extracted_registers = extract_idregs_from_registers_json(json_file_path)
> +
> +    if extracted_registers:
> +        output_list = extracted_registers.items()
> +
> +        # Sort by register name
> +        sorted_output = sorted(output_list, key=lambda item: item[0])
> +
> +        # format lines as DEF(<name>, <op0>, <op1>, <crn>, <crm>, <op2>)
> +        final_output = ""
> +        for reg_name, encoding in sorted_output:
> +            reformatted_encoding = encoding.replace(" ", ", ")
> +            final_output += f"DEF({reg_name}, {reformatted_encoding})\n"
> +
> +        with open("target/arm/cpu-sysregs.h.inc", 'w') as f:
> +            f.write("/* SPDX-License-Identifier: GPL-2.0-or-later */\n\n")
> +            f.write("/* This file is autogenerated by ")
> +            f.write("scripts/update-aarch64-cpu-sysregs-header.py */\n")
> +            f.write("/* DEF(<name>, <op0>, <op1>, <crn>, <crm>, <op2>) */\n\n")
> +            f.write(final_output)
> +        print("updated target/arm/cpu-sysregs.h.inc")
> -- 
> 2.53.0
> 

I think we should also care about CNTFRQ_EL0 (3, 14, 0, 0), it specifies the effective counter frequency
and migration between hosts with different CNTFRQ_EL0 should be forbidden.

I will include that in my v4.

Otherwise,

Reviewed-by: Khushit Shah <khushit.shah@nutanix.com>

[RFC PATCH v7 02/18] target/arm/cpu-sysregs.h.inc: Sort by name alphabetical order

[Eric Auger]

Sort by register name alphabetical order. This will allow to
easily diff with the future content, automatically generated.

No functional change intended.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Shameer Kolothum <skolothumtho@nvidia.com>

---
v5 -> v6:
- v5 version conflicted because ID_AA64FPFR0_EL1 has been
  added

v4 -> v5:
- remove spurious CCSIDR definition
---
 target/arm/cpu-sysregs.h.inc | 44 ++++++++++++++++++------------------
 1 file changed, 22 insertions(+), 22 deletions(-)

diff --git a/target/arm/cpu-sysregs.h.inc b/target/arm/cpu-sysregs.h.inc
index 6e8b335b8f..ec5a12b0f4 100644
--- a/target/arm/cpu-sysregs.h.inc
+++ b/target/arm/cpu-sysregs.h.inc
@@ -1,13 +1,12 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
-DEF(ID_AA64PFR0_EL1, 3, 0, 0, 4, 0)
-DEF(ID_AA64PFR1_EL1, 3, 0, 0, 4, 1)
-DEF(ID_AA64PFR2_EL1, 3, 0, 0, 4, 2)
-DEF(ID_AA64SMFR0_EL1, 3, 0, 0, 4, 5)
-DEF(ID_AA64FPFR0_EL1, 3, 0, 0, 4, 7)
-DEF(ID_AA64DFR0_EL1, 3, 0, 0, 5, 0)
-DEF(ID_AA64DFR1_EL1, 3, 0, 0, 5, 1)
+DEF(CLIDR_EL1, 3, 1, 0, 0, 1)
+DEF(CTR_EL0, 3, 3, 0, 0, 1)
+DEF(DCZID_EL0, 3, 3, 0, 0, 7)
 DEF(ID_AA64AFR0_EL1, 3, 0, 0, 5, 4)
 DEF(ID_AA64AFR1_EL1, 3, 0, 0, 5, 5)
+DEF(ID_AA64DFR0_EL1, 3, 0, 0, 5, 0)
+DEF(ID_AA64DFR1_EL1, 3, 0, 0, 5, 1)
+DEF(ID_AA64FPFR0_EL1, 3, 0, 0, 4, 7)
 DEF(ID_AA64ISAR0_EL1, 3, 0, 0, 6, 0)
 DEF(ID_AA64ISAR1_EL1, 3, 0, 0, 6, 1)
 DEF(ID_AA64ISAR2_EL1, 3, 0, 0, 6, 2)
@@ -17,29 +16,30 @@ DEF(ID_AA64MMFR1_EL1, 3, 0, 0, 7, 1)
 DEF(ID_AA64MMFR2_EL1, 3, 0, 0, 7, 2)
 DEF(ID_AA64MMFR3_EL1, 3, 0, 0, 7, 3)
 DEF(ID_AA64MMFR4_EL1, 3, 0, 0, 7, 4)
-DEF(ID_PFR0_EL1, 3, 0, 0, 1, 0)
-DEF(ID_PFR1_EL1, 3, 0, 0, 1, 1)
-DEF(ID_DFR0_EL1, 3, 0, 0, 1, 2)
+DEF(ID_AA64PFR0_EL1, 3, 0, 0, 4, 0)
+DEF(ID_AA64PFR1_EL1, 3, 0, 0, 4, 1)
+DEF(ID_AA64PFR2_EL1, 3, 0, 0, 4, 2)
+DEF(ID_AA64SMFR0_EL1, 3, 0, 0, 4, 5)
+DEF(ID_AA64ZFR0_EL1, 3, 0, 0, 4, 4)
 DEF(ID_AFR0_EL1, 3, 0, 0, 1, 3)
-DEF(ID_MMFR0_EL1, 3, 0, 0, 1, 4)
-DEF(ID_MMFR1_EL1, 3, 0, 0, 1, 5)
-DEF(ID_MMFR2_EL1, 3, 0, 0, 1, 6)
-DEF(ID_MMFR3_EL1, 3, 0, 0, 1, 7)
+DEF(ID_DFR0_EL1, 3, 0, 0, 1, 2)
+DEF(ID_DFR1_EL1, 3, 0, 0, 3, 5)
 DEF(ID_ISAR0_EL1, 3, 0, 0, 2, 0)
 DEF(ID_ISAR1_EL1, 3, 0, 0, 2, 1)
 DEF(ID_ISAR2_EL1, 3, 0, 0, 2, 2)
 DEF(ID_ISAR3_EL1, 3, 0, 0, 2, 3)
 DEF(ID_ISAR4_EL1, 3, 0, 0, 2, 4)
 DEF(ID_ISAR5_EL1, 3, 0, 0, 2, 5)
-DEF(ID_MMFR4_EL1, 3, 0, 0, 2, 6)
 DEF(ID_ISAR6_EL1, 3, 0, 0, 2, 7)
+DEF(ID_MMFR0_EL1, 3, 0, 0, 1, 4)
+DEF(ID_MMFR1_EL1, 3, 0, 0, 1, 5)
+DEF(ID_MMFR2_EL1, 3, 0, 0, 1, 6)
+DEF(ID_MMFR3_EL1, 3, 0, 0, 1, 7)
+DEF(ID_MMFR4_EL1, 3, 0, 0, 2, 6)
+DEF(ID_MMFR5_EL1, 3, 0, 0, 3, 6)
+DEF(ID_PFR0_EL1, 3, 0, 0, 1, 0)
+DEF(ID_PFR1_EL1, 3, 0, 0, 1, 1)
+DEF(ID_PFR2_EL1, 3, 0, 0, 3, 4)
 DEF(MVFR0_EL1, 3, 0, 0, 3, 0)
 DEF(MVFR1_EL1, 3, 0, 0, 3, 1)
 DEF(MVFR2_EL1, 3, 0, 0, 3, 2)
-DEF(ID_PFR2_EL1, 3, 0, 0, 3, 4)
-DEF(ID_DFR1_EL1, 3, 0, 0, 3, 5)
-DEF(ID_MMFR5_EL1, 3, 0, 0, 3, 6)
-DEF(CLIDR_EL1, 3, 1, 0, 0, 1)
-DEF(ID_AA64ZFR0_EL1, 3, 0, 0, 4, 4)
-DEF(CTR_EL0, 3, 3, 0, 0, 1)
-DEF(DCZID_EL0, 3, 3, 0, 0, 7)
-- 
2.53.0

Re: [RFC PATCH v7 02/18] target/arm/cpu-sysregs.h.inc: Sort by name alphabetical order

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> Sort by register name alphabetical order. This will allow to
> easily diff with the future content, automatically generated.
> 
> No functional change intended.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
> Reviewed-by: Shameer Kolothum <skolothumtho@nvidia.com>
> 
> ---
> v5 -> v6:
> - v5 version conflicted because ID_AA64FPFR0_EL1 has been
>  added
> 
> v4 -> v5:
> - remove spurious CCSIDR definition
> ---
> target/arm/cpu-sysregs.h.inc | 44 ++++++++++++++++++------------------
> 1 file changed, 22 insertions(+), 22 deletions(-)
> 
> diff --git a/target/arm/cpu-sysregs.h.inc b/target/arm/cpu-sysregs.h.inc
> index 6e8b335b8f..ec5a12b0f4 100644
> --- a/target/arm/cpu-sysregs.h.inc
> +++ b/target/arm/cpu-sysregs.h.inc
> @@ -1,13 +1,12 @@
> /* SPDX-License-Identifier: GPL-2.0-or-later */
> -DEF(ID_AA64PFR0_EL1, 3, 0, 0, 4, 0)
> -DEF(ID_AA64PFR1_EL1, 3, 0, 0, 4, 1)
> -DEF(ID_AA64PFR2_EL1, 3, 0, 0, 4, 2)
> -DEF(ID_AA64SMFR0_EL1, 3, 0, 0, 4, 5)
> -DEF(ID_AA64FPFR0_EL1, 3, 0, 0, 4, 7)
> -DEF(ID_AA64DFR0_EL1, 3, 0, 0, 5, 0)
> -DEF(ID_AA64DFR1_EL1, 3, 0, 0, 5, 1)
> +DEF(CLIDR_EL1, 3, 1, 0, 0, 1)
> +DEF(CTR_EL0, 3, 3, 0, 0, 1)
> +DEF(DCZID_EL0, 3, 3, 0, 0, 7)
> DEF(ID_AA64AFR0_EL1, 3, 0, 0, 5, 4)
> DEF(ID_AA64AFR1_EL1, 3, 0, 0, 5, 5)
> +DEF(ID_AA64DFR0_EL1, 3, 0, 0, 5, 0)
> +DEF(ID_AA64DFR1_EL1, 3, 0, 0, 5, 1)
> +DEF(ID_AA64FPFR0_EL1, 3, 0, 0, 4, 7)
> DEF(ID_AA64ISAR0_EL1, 3, 0, 0, 6, 0)
> DEF(ID_AA64ISAR1_EL1, 3, 0, 0, 6, 1)
> DEF(ID_AA64ISAR2_EL1, 3, 0, 0, 6, 2)
> @@ -17,29 +16,30 @@ DEF(ID_AA64MMFR1_EL1, 3, 0, 0, 7, 1)
> DEF(ID_AA64MMFR2_EL1, 3, 0, 0, 7, 2)
> DEF(ID_AA64MMFR3_EL1, 3, 0, 0, 7, 3)
> DEF(ID_AA64MMFR4_EL1, 3, 0, 0, 7, 4)
> -DEF(ID_PFR0_EL1, 3, 0, 0, 1, 0)
> -DEF(ID_PFR1_EL1, 3, 0, 0, 1, 1)
> -DEF(ID_DFR0_EL1, 3, 0, 0, 1, 2)
> +DEF(ID_AA64PFR0_EL1, 3, 0, 0, 4, 0)
> +DEF(ID_AA64PFR1_EL1, 3, 0, 0, 4, 1)
> +DEF(ID_AA64PFR2_EL1, 3, 0, 0, 4, 2)
> +DEF(ID_AA64SMFR0_EL1, 3, 0, 0, 4, 5)
> +DEF(ID_AA64ZFR0_EL1, 3, 0, 0, 4, 4)
> DEF(ID_AFR0_EL1, 3, 0, 0, 1, 3)
> -DEF(ID_MMFR0_EL1, 3, 0, 0, 1, 4)
> -DEF(ID_MMFR1_EL1, 3, 0, 0, 1, 5)
> -DEF(ID_MMFR2_EL1, 3, 0, 0, 1, 6)
> -DEF(ID_MMFR3_EL1, 3, 0, 0, 1, 7)
> +DEF(ID_DFR0_EL1, 3, 0, 0, 1, 2)
> +DEF(ID_DFR1_EL1, 3, 0, 0, 3, 5)
> DEF(ID_ISAR0_EL1, 3, 0, 0, 2, 0)
> DEF(ID_ISAR1_EL1, 3, 0, 0, 2, 1)
> DEF(ID_ISAR2_EL1, 3, 0, 0, 2, 2)
> DEF(ID_ISAR3_EL1, 3, 0, 0, 2, 3)
> DEF(ID_ISAR4_EL1, 3, 0, 0, 2, 4)
> DEF(ID_ISAR5_EL1, 3, 0, 0, 2, 5)
> -DEF(ID_MMFR4_EL1, 3, 0, 0, 2, 6)
> DEF(ID_ISAR6_EL1, 3, 0, 0, 2, 7)
> +DEF(ID_MMFR0_EL1, 3, 0, 0, 1, 4)
> +DEF(ID_MMFR1_EL1, 3, 0, 0, 1, 5)
> +DEF(ID_MMFR2_EL1, 3, 0, 0, 1, 6)
> +DEF(ID_MMFR3_EL1, 3, 0, 0, 1, 7)
> +DEF(ID_MMFR4_EL1, 3, 0, 0, 2, 6)
> +DEF(ID_MMFR5_EL1, 3, 0, 0, 3, 6)
> +DEF(ID_PFR0_EL1, 3, 0, 0, 1, 0)
> +DEF(ID_PFR1_EL1, 3, 0, 0, 1, 1)
> +DEF(ID_PFR2_EL1, 3, 0, 0, 3, 4)
> DEF(MVFR0_EL1, 3, 0, 0, 3, 0)
> DEF(MVFR1_EL1, 3, 0, 0, 3, 1)
> DEF(MVFR2_EL1, 3, 0, 0, 3, 2)
> -DEF(ID_PFR2_EL1, 3, 0, 0, 3, 4)
> -DEF(ID_DFR1_EL1, 3, 0, 0, 3, 5)
> -DEF(ID_MMFR5_EL1, 3, 0, 0, 3, 6)
> -DEF(CLIDR_EL1, 3, 1, 0, 0, 1)
> -DEF(ID_AA64ZFR0_EL1, 3, 0, 0, 4, 4)
> -DEF(CTR_EL0, 3, 3, 0, 0, 1)
> -DEF(DCZID_EL0, 3, 3, 0, 0, 7)
> -- 
> 2.53.0
> 

Reviewed-by: Khushit Shah <khushit.shah@nutanix.com>

[RFC PATCH v7 03/18] target/arm/cpu-sysregs.h.inc: Update with automatic generation

[Eric Auger]

Generated definitions with scripts/update-aarch64-cpu-sysregs-header.py
based on "AARCHMRS containing the JSON files for Arm A-profile
architecture (2026-03)" Registers.json file.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Shameer Kolothum <skolothumtho@nvidia.com>
---
 target/arm/cpu-sysregs.h.inc | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/target/arm/cpu-sysregs.h.inc b/target/arm/cpu-sysregs.h.inc
index ec5a12b0f4..2188cd7be0 100644
--- a/target/arm/cpu-sysregs.h.inc
+++ b/target/arm/cpu-sysregs.h.inc
@@ -1,11 +1,20 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
+
+/* This file is autogenerated by scripts/update-aarch64-cpu-sysregs-header.py */
+/* DEF(<name>, <op0>, <op1>, <crn>, <crm>, <op2>) */
+
+DEF(AIDR_EL1, 3, 1, 0, 0, 7)
+DEF(CCSIDR2_EL1, 3, 1, 0, 0, 2)
+DEF(CCSIDR_EL1, 3, 1, 0, 0, 0)
 DEF(CLIDR_EL1, 3, 1, 0, 0, 1)
 DEF(CTR_EL0, 3, 3, 0, 0, 1)
 DEF(DCZID_EL0, 3, 3, 0, 0, 7)
+DEF(GMID_EL1, 3, 1, 0, 0, 4)
 DEF(ID_AA64AFR0_EL1, 3, 0, 0, 5, 4)
 DEF(ID_AA64AFR1_EL1, 3, 0, 0, 5, 5)
 DEF(ID_AA64DFR0_EL1, 3, 0, 0, 5, 0)
 DEF(ID_AA64DFR1_EL1, 3, 0, 0, 5, 1)
+DEF(ID_AA64DFR2_EL1, 3, 0, 0, 5, 2)
 DEF(ID_AA64FPFR0_EL1, 3, 0, 0, 4, 7)
 DEF(ID_AA64ISAR0_EL1, 3, 0, 0, 6, 0)
 DEF(ID_AA64ISAR1_EL1, 3, 0, 0, 6, 1)
@@ -40,6 +49,10 @@ DEF(ID_MMFR5_EL1, 3, 0, 0, 3, 6)
 DEF(ID_PFR0_EL1, 3, 0, 0, 1, 0)
 DEF(ID_PFR1_EL1, 3, 0, 0, 1, 1)
 DEF(ID_PFR2_EL1, 3, 0, 0, 3, 4)
+DEF(MIDR_EL1, 3, 0, 0, 0, 0)
+DEF(MPIDR_EL1, 3, 0, 0, 0, 5)
 DEF(MVFR0_EL1, 3, 0, 0, 3, 0)
 DEF(MVFR1_EL1, 3, 0, 0, 3, 1)
 DEF(MVFR2_EL1, 3, 0, 0, 3, 2)
+DEF(REVIDR_EL1, 3, 0, 0, 0, 6)
+DEF(SMIDR_EL1, 3, 1, 0, 0, 6)
-- 
2.53.0

Re: [RFC PATCH v7 03/18] target/arm/cpu-sysregs.h.inc: Update with automatic generation

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> Generated definitions with scripts/update-aarch64-cpu-sysregs-header.py
> based on "AARCHMRS containing the JSON files for Arm A-profile
> architecture (2026-03)" Registers.json file.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
> Reviewed-by: Shameer Kolothum <skolothumtho@nvidia.com>
> ---
> target/arm/cpu-sysregs.h.inc | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
> 
> diff --git a/target/arm/cpu-sysregs.h.inc b/target/arm/cpu-sysregs.h.inc
> index ec5a12b0f4..2188cd7be0 100644
> --- a/target/arm/cpu-sysregs.h.inc
> +++ b/target/arm/cpu-sysregs.h.inc
> @@ -1,11 +1,20 @@
> /* SPDX-License-Identifier: GPL-2.0-or-later */
> +
> +/* This file is autogenerated by scripts/update-aarch64-cpu-sysregs-header.py */
> +/* DEF(<name>, <op0>, <op1>, <crn>, <crm>, <op2>) */
> +
> +DEF(AIDR_EL1, 3, 1, 0, 0, 7)
> +DEF(CCSIDR2_EL1, 3, 1, 0, 0, 2)
> +DEF(CCSIDR_EL1, 3, 1, 0, 0, 0)
As CCSIDR*_EL1 are demux registers, a single entry for them does
not make sense.

Warm Regards,
Khushit
> DEF(CLIDR_EL1, 3, 1, 0, 0, 1)
> DEF(CTR_EL0, 3, 3, 0, 0, 1)
> DEF(DCZID_EL0, 3, 3, 0, 0, 7)
> +DEF(GMID_EL1, 3, 1, 0, 0, 4)
> DEF(ID_AA64AFR0_EL1, 3, 0, 0, 5, 4)
> DEF(ID_AA64AFR1_EL1, 3, 0, 0, 5, 5)
> DEF(ID_AA64DFR0_EL1, 3, 0, 0, 5, 0)
> DEF(ID_AA64DFR1_EL1, 3, 0, 0, 5, 1)
> +DEF(ID_AA64DFR2_EL1, 3, 0, 0, 5, 2)
> DEF(ID_AA64FPFR0_EL1, 3, 0, 0, 4, 7)
> DEF(ID_AA64ISAR0_EL1, 3, 0, 0, 6, 0)
> DEF(ID_AA64ISAR1_EL1, 3, 0, 0, 6, 1)
> @@ -40,6 +49,10 @@ DEF(ID_MMFR5_EL1, 3, 0, 0, 3, 6)
> DEF(ID_PFR0_EL1, 3, 0, 0, 1, 0)
> DEF(ID_PFR1_EL1, 3, 0, 0, 1, 1)
> DEF(ID_PFR2_EL1, 3, 0, 0, 3, 4)
> +DEF(MIDR_EL1, 3, 0, 0, 0, 0)
> +DEF(MPIDR_EL1, 3, 0, 0, 0, 5)
> DEF(MVFR0_EL1, 3, 0, 0, 3, 0)
> DEF(MVFR1_EL1, 3, 0, 0, 3, 1)
> DEF(MVFR2_EL1, 3, 0, 0, 3, 2)
> +DEF(REVIDR_EL1, 3, 0, 0, 0, 6)
> +DEF(SMIDR_EL1, 3, 1, 0, 0, 6)
> -- 
> 2.53.0
> 

[RFC PATCH v7 04/18] arm/cpu: Add infra to handle generated ID register definitions

[Eric Auger]

Introduce an infrastructure to store the definition of all ID regs:
This include their name, index and array of named fields.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Co-authored-by: Khushit Shah <khushit.shah@nutanix.com>

---

v5 -> v6:
- add ArmIdRegArchVal
---
 target/arm/cpu-idregs.h | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 target/arm/cpu-idregs.h

diff --git a/target/arm/cpu-idregs.h b/target/arm/cpu-idregs.h
new file mode 100644
index 0000000000..245f1c8103
--- /dev/null
+++ b/target/arm/cpu-idregs.h
@@ -0,0 +1,41 @@
+/*
+ * handle ID registers and their fields
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#ifndef TARGET_ARM_CPU_IDREGS_H
+#define TARGET_ARM_CPU_IDREGS_H
+
+#include "qemu/osdep.h"
+#include "qemu/error-report.h"
+#include "cpu.h"
+#include "cpu-sysregs.h"
+
+typedef struct ArmIdRegArchVal {
+    uint64_t value;
+    const char *name;
+} ArmIdRegArchVal;
+
+typedef struct ARM64SysRegField {
+    const char *name; /* name of the field, for instance CTR_EL0_IDC */
+    ARMIDRegisterIdx index; /* parent register, e.g. CTR_EL0_IDX */
+    int shift; /* lsb of the field in the register */
+    int length; /* highest bit number */
+    ArmIdRegArchVal *arch_vals;
+    uint32_t arch_vals_count;
+} ARM64SysRegField;
+
+typedef struct ARM64SysReg {
+    const char *name;   /* name of the sysreg, for instance CTR_EL0 */
+    ARMIDRegisterIdx index; /* register index, e.g. CTR_EL0_IDX */
+    struct ARM64SysRegField *fields;
+    uint32_t fields_count;
+    uint64_t writable_mask;
+} ARM64SysReg;
+
+/*
+ * List of exposed ID regs (automatically populated from AARCHMRS Registers.json)
+ */
+extern ARM64SysReg arm64_id_regs[NUM_ID_IDX];
+
+#endif
-- 
2.53.0

Re: [RFC PATCH v7 04/18] arm/cpu: Add infra to handle generated ID register definitions

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> Introduce an infrastructure to store the definition of all ID regs:
> This include their name, index and array of named fields.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
> Co-authored-by: Khushit Shah <khushit.shah@nutanix.com>
> 
> ---
> 
> v5 -> v6:
> - add ArmIdRegArchVal
> ---
> target/arm/cpu-idregs.h | 41 +++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 41 insertions(+)
> create mode 100644 target/arm/cpu-idregs.h
> 
> diff --git a/target/arm/cpu-idregs.h b/target/arm/cpu-idregs.h
> new file mode 100644
> index 0000000000..245f1c8103
> --- /dev/null
> +++ b/target/arm/cpu-idregs.h
> @@ -0,0 +1,41 @@
> +/*
> + * handle ID registers and their fields
> + *
> + * SPDX-License-Identifier: GPL-2.0-or-later
> + */
> +#ifndef TARGET_ARM_CPU_IDREGS_H
> +#define TARGET_ARM_CPU_IDREGS_H
> +
> +#include "qemu/osdep.h"
> +#include "qemu/error-report.h"
> +#include "cpu.h"
> +#include "cpu-sysregs.h"
> +
> +typedef struct ArmIdRegArchVal {
> +    uint64_t value;
> +    const char *name;
I guess the name is not required, right?

> +} ArmIdRegArchVal;
> +
> +typedef struct ARM64SysRegField {
> +    const char *name; /* name of the field, for instance CTR_EL0_IDC */
> +    ARMIDRegisterIdx index; /* parent register, e.g. CTR_EL0_IDX */
> +    int shift; /* lsb of the field in the register */
> +    int length; /* highest bit number */
> +    ArmIdRegArchVal *arch_vals;
> +    uint32_t arch_vals_count;
> +} ARM64SysRegField;
> +
> +typedef struct ARM64SysReg {
> +    const char *name;   /* name of the sysreg, for instance CTR_EL0 */
> +    ARMIDRegisterIdx index; /* register index, e.g. CTR_EL0_IDX */
> +    struct ARM64SysRegField *fields;
> +    uint32_t fields_count;
> +    uint64_t writable_mask;
> +} ARM64SysReg;
> +
> +/*
> + * List of exposed ID regs (automatically populated from AARCHMRS Registers.json)
> + */
> +extern ARM64SysReg arm64_id_regs[NUM_ID_IDX];
> +
> +#endif
> -- 
> 2.53.0
> 

Re: [RFC PATCH v7 04/18] arm/cpu: Add infra to handle generated ID register definitions

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> Introduce an infrastructure to store the definition of all ID regs:
> This include their name, index and array of named fields.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
> Co-authored-by: Khushit Shah <khushit.shah@nutanix.com>
Signed-off-by: Khushit Shah <khushit.shah@nutanix.com>

> 
> ---
> 
> v5 -> v6:
> - add ArmIdRegArchVal
> ---
> target/arm/cpu-idregs.h | 41 +++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 41 insertions(+)
> create mode 100644 target/arm/cpu-idregs.h
> 
> diff --git a/target/arm/cpu-idregs.h b/target/arm/cpu-idregs.h
> new file mode 100644
> index 0000000000..245f1c8103
> --- /dev/null
> +++ b/target/arm/cpu-idregs.h
> @@ -0,0 +1,41 @@
> +/*
> + * handle ID registers and their fields
> + *
> + * SPDX-License-Identifier: GPL-2.0-or-later
> + */
> +#ifndef TARGET_ARM_CPU_IDREGS_H
> +#define TARGET_ARM_CPU_IDREGS_H
> +
> +#include "qemu/osdep.h"
> +#include "qemu/error-report.h"
> +#include "cpu.h"
> +#include "cpu-sysregs.h"
> +
> +typedef struct ArmIdRegArchVal {
> +    uint64_t value;
> +    const char *name;
> +} ArmIdRegArchVal;
> +
> +typedef struct ARM64SysRegField {
> +    const char *name; /* name of the field, for instance CTR_EL0_IDC */
> +    ARMIDRegisterIdx index; /* parent register, e.g. CTR_EL0_IDX */
> +    int shift; /* lsb of the field in the register */
> +    int length; /* highest bit number */
> +    ArmIdRegArchVal *arch_vals;
> +    uint32_t arch_vals_count;
> +} ARM64SysRegField;
> +
> +typedef struct ARM64SysReg {
> +    const char *name;   /* name of the sysreg, for instance CTR_EL0 */
> +    ARMIDRegisterIdx index; /* register index, e.g. CTR_EL0_IDX */
> +    struct ARM64SysRegField *fields;
> +    uint32_t fields_count;
> +    uint64_t writable_mask;
> +} ARM64SysReg;
> +
> +/*
> + * List of exposed ID regs (automatically populated from AARCHMRS Registers.json)
> + */
> +extern ARM64SysReg arm64_id_regs[NUM_ID_IDX];
> +
> +#endif
> -- 
> 2.53.0
> 

[RFC PATCH v7 05/18] scripts: Introduce scripts/aarch64_sysreg_helpers module

[Eric Auger]

We plan to reuse get_opcode() and extract_idregs_from_registers_json()
functions in another script. So let's move them into a module

No functional change intended.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 scripts/aarch64_sysreg_helpers.py            | 109 +++++++++++++++++++
 scripts/update-aarch64-cpu-sysregs-header.py |  85 +--------------
 2 files changed, 110 insertions(+), 84 deletions(-)
 create mode 100644 scripts/aarch64_sysreg_helpers.py

diff --git a/scripts/aarch64_sysreg_helpers.py b/scripts/aarch64_sysreg_helpers.py
new file mode 100644
index 0000000000..dd5ec4bafa
--- /dev/null
+++ b/scripts/aarch64_sysreg_helpers.py
@@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+
+# Helpers used in aarch64 sysreg definition generation
+#
+# Copyright (C) 2026 Red Hat, Inc.
+#
+# Authors: Eric Auger <eric.auger@redhat.com>
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+
+import json
+import os
+
+# Some regs have op code values like 000x, 001x. Anyway we don't need
+# them. Besides some regs are undesired in the generated file such as
+# VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we
+# are interested in and are tricky to decode as their system accessor
+# refer to MPIDR_EL1/MIDR_EL1 respectively
+
+skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \
+            'VMPIDR_EL2', 'VPIDR_EL2']
+
+# returns the int value of a given @opcode for a reg @encoding
+def get_opcode(encoding, opcode):
+    fvalue = encoding.get(opcode)
+    if fvalue:
+        value = fvalue.get('value')
+        if isinstance(value, str):
+            value = value.strip("'")
+            value = int(value, 2)
+            return value
+    return -1
+
+def extract_idregs_from_registers_json(filename):
+    """
+    Load a Registers.json file and extract all ID registers, decode their
+    opcode and dump the information in target/arm/cpu-sysregs.h.inc
+
+    Args:
+        filename (str): The path to the Registers.json
+    returns:
+        idregs: list of ID regs and their encoding
+    """
+    if not os.path.exists(filename):
+        print(f"Error: {filename} could not be found!")
+        return {}
+
+    try:
+        with open(filename, 'r') as f:
+            register_data = json.load(f)
+
+    except json.JSONDecodeError:
+        print(f"Could not decode json from '{filename}'!")
+        return {}
+    except Exception as e:
+        print(f"Unexpected error while reading {filename}: {e}")
+        return {}
+
+    registers = [r for r in register_data if isinstance(r, dict) and \
+                r.get('_type') == 'Register']
+
+    idregs = {}
+
+    # Some regs have op code values like 000x, 001x. Anyway we don't need
+    # them. Besides some regs are undesired in the generated file such as
+    # VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we
+    # are interested in and are tricky to decode as their system accessor
+    # refer to MPIDR_EL1/MIDR_EL1 respectively
+
+    skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \
+                'VMPIDR_EL2', 'VPIDR_EL2']
+
+    for register in registers:
+        reg_name = register.get('name')
+
+        is_skipped = any(term in (reg_name or "").upper() for term in skiplist)
+
+        if reg_name and not is_skipped:
+            accessors = register.get('accessors', [])
+
+            for accessor in accessors:
+                type = accessor.get('_type')
+                if type in ['Accessors.SystemAccessor']:
+                    encoding_list = accessor.get('encoding')
+
+                    if isinstance(encoding_list, list) and encoding_list and \
+                       isinstance(encoding_list[0], dict):
+                        encoding_wrapper = encoding_list[0]
+                        encoding_source = encoding_wrapper.get('encodings', \
+                                                               encoding_wrapper)
+
+                        if isinstance(encoding_source, dict):
+                                op0 = get_opcode(encoding_source, 'op0')
+                                op1 = get_opcode(encoding_source, 'op1')
+                                op2 = get_opcode(encoding_source, 'op2')
+                                crn = get_opcode(encoding_source, 'CRn')
+                                crm = get_opcode(encoding_source, 'CRm')
+                                encoding_str=f"{op0} {op1} {crn} {crm} {op2}"
+
+                # ID regs are assumed within this scope
+                if op0 == 3 and (op1 == 0 or op1 == 1 or op1 == 3) and \
+                   crn == 0 and (crm >= 0 and crm <= 7) and (op2 >= 0 and op2 <= 7):
+                    idregs[reg_name] = encoding_str
+
+    return idregs
+
+
+
diff --git a/scripts/update-aarch64-cpu-sysregs-header.py b/scripts/update-aarch64-cpu-sysregs-header.py
index 8c337147dd..43107264e9 100755
--- a/scripts/update-aarch64-cpu-sysregs-header.py
+++ b/scripts/update-aarch64-cpu-sysregs-header.py
@@ -17,90 +17,7 @@
 import json
 import os
 import sys
-
-# Some regs have op code values like 000x, 001x. Anyway we don't need
-# them. Besides some regs are undesired in the generated file such as
-# VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we
-# are interested in and are tricky to decode as their system accessor
-# refer to MPIDR_EL1/MIDR_EL1 respectively
-
-skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \
-            'VMPIDR_EL2', 'VPIDR_EL2']
-
-# returns the int value of a given @opcode for a reg @encoding
-def get_opcode(encoding, opcode):
-    fvalue = encoding.get(opcode)
-    if fvalue:
-        value = fvalue.get('value')
-        if isinstance(value, str):
-            value = value.strip("'")
-            value = int(value, 2)
-            return value
-    return -1
-
-def extract_idregs_from_registers_json(filename):
-    """
-    Load a Registers.json file and extract all ID registers, decode their
-    opcode and dump the information in target/arm/cpu-sysregs.h.inc
-
-    Args:
-        filename (str): The path to the Registers.json
-    returns:
-        idregs: list of ID regs and their encoding
-    """
-    if not os.path.exists(filename):
-        print(f"Error: {filename} could not be found!")
-        return {}
-
-    try:
-        with open(filename, 'r') as f:
-            register_data = json.load(f)
-
-    except json.JSONDecodeError:
-        print(f"Could not decode json from '{filename}'!")
-        return {}
-    except Exception as e:
-        print(f"Unexpected error while reading {filename}: {e}")
-        return {}
-
-    registers = [r for r in register_data if isinstance(r, dict) and \
-                r.get('_type') == 'Register']
-
-    idregs = {}
-
-    for register in registers:
-        reg_name = register.get('name')
-
-        is_skipped = any(term in (reg_name or "").upper() for term in skiplist)
-
-        if reg_name and not is_skipped:
-            accessors = register.get('accessors', [])
-
-            for accessor in accessors:
-                type = accessor.get('_type')
-                if type in ['Accessors.SystemAccessor']:
-                    encoding_list = accessor.get('encoding')
-
-                    if isinstance(encoding_list, list) and encoding_list and \
-                       isinstance(encoding_list[0], dict):
-                        encoding_wrapper = encoding_list[0]
-                        encoding_source = encoding_wrapper.get('encodings', \
-                                                               encoding_wrapper)
-
-                        if isinstance(encoding_source, dict):
-                                op0 = get_opcode(encoding_source, 'op0')
-                                op1 = get_opcode(encoding_source, 'op1')
-                                op2 = get_opcode(encoding_source, 'op2')
-                                crn = get_opcode(encoding_source, 'CRn')
-                                crm = get_opcode(encoding_source, 'CRm')
-                                encoding_str=f"{op0} {op1} {crn} {crm} {op2}"
-
-                # ID regs are assumed within this scope
-                if op0 == 3 and (op1 == 0 or op1 == 1 or op1 == 3) and \
-                   crn == 0 and (crm >= 0 and crm <= 7) and (op2 >= 0 and op2 <= 7):
-                    idregs[reg_name] = encoding_str
-
-    return idregs
+from aarch64_sysreg_helpers import extract_idregs_from_registers_json
 
 if __name__ == "__main__":
     # Single arg expected: the path to the Registers.json file
-- 
2.53.0

Re: [RFC PATCH v7 05/18] scripts: Introduce scripts/aarch64_sysreg_helpers module

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> We plan to reuse get_opcode() and extract_idregs_from_registers_json()
> functions in another script. So let's move them into a module
> 
> No functional change intended.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> ---
> scripts/aarch64_sysreg_helpers.py            | 109 +++++++++++++++++++
> scripts/update-aarch64-cpu-sysregs-header.py |  85 +--------------
> 2 files changed, 110 insertions(+), 84 deletions(-)
> create mode 100644 scripts/aarch64_sysreg_helpers.py
> 
> diff --git a/scripts/aarch64_sysreg_helpers.py b/scripts/aarch64_sysreg_helpers.py
> new file mode 100644
> index 0000000000..dd5ec4bafa
> --- /dev/null
> +++ b/scripts/aarch64_sysreg_helpers.py
> @@ -0,0 +1,109 @@
> +#!/usr/bin/env python3
> +
> +# Helpers used in aarch64 sysreg definition generation
> +#
> +# Copyright (C) 2026 Red Hat, Inc.
> +#
> +# Authors: Eric Auger <eric.auger@redhat.com>
> +#
> +# SPDX-License-Identifier: GPL-2.0-or-later
> +
> +
> +import json
> +import os
> +
> +# Some regs have op code values like 000x, 001x. Anyway we don't need
> +# them. Besides some regs are undesired in the generated file such as
> +# VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we
> +# are interested in and are tricky to decode as their system accessor
> +# refer to MPIDR_EL1/MIDR_EL1 respectively
> +
> +skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \
> +            'VMPIDR_EL2', 'VPIDR_EL2']
> +
> +# returns the int value of a given @opcode for a reg @encoding
> +def get_opcode(encoding, opcode):
> +    fvalue = encoding.get(opcode)
> +    if fvalue:
> +        value = fvalue.get('value')
> +        if isinstance(value, str):
> +            value = value.strip("'")
> +            value = int(value, 2)
> +            return value
> +    return -1
> +
> +def extract_idregs_from_registers_json(filename):
> +    """
> +    Load a Registers.json file and extract all ID registers, decode their
> +    opcode and dump the information in target/arm/cpu-sysregs.h.inc
> +
> +    Args:
> +        filename (str): The path to the Registers.json
> +    returns:
> +        idregs: list of ID regs and their encoding
> +    """
> +    if not os.path.exists(filename):
> +        print(f"Error: {filename} could not be found!")
> +        return {}
> +
> +    try:
> +        with open(filename, 'r') as f:
> +            register_data = json.load(f)
> +
> +    except json.JSONDecodeError:
> +        print(f"Could not decode json from '{filename}'!")
> +        return {}
> +    except Exception as e:
> +        print(f"Unexpected error while reading {filename}: {e}")
> +        return {}
> +
> +    registers = [r for r in register_data if isinstance(r, dict) and \
> +                r.get('_type') == 'Register']
> +
> +    idregs = {}
> +
> +    # Some regs have op code values like 000x, 001x. Anyway we don't need
> +    # them. Besides some regs are undesired in the generated file such as
> +    # VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we
> +    # are interested in and are tricky to decode as their system accessor
> +    # refer to MPIDR_EL1/MIDR_EL1 respectively
> +
> +    skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \
> +                'VMPIDR_EL2', 'VPIDR_EL2']
> +
> +    for register in registers:
> +        reg_name = register.get('name')
> +
> +        is_skipped = any(term in (reg_name or "").upper() for term in skiplist)
> +
> +        if reg_name and not is_skipped:
> +            accessors = register.get('accessors', [])
> +
> +            for accessor in accessors:
> +                type = accessor.get('_type')
> +                if type in ['Accessors.SystemAccessor']:
> +                    encoding_list = accessor.get('encoding')
> +
> +                    if isinstance(encoding_list, list) and encoding_list and \
> +                       isinstance(encoding_list[0], dict):
> +                        encoding_wrapper = encoding_list[0]
> +                        encoding_source = encoding_wrapper.get('encodings', \
> +                                                               encoding_wrapper)
> +
> +                        if isinstance(encoding_source, dict):
> +                                op0 = get_opcode(encoding_source, 'op0')
> +                                op1 = get_opcode(encoding_source, 'op1')
> +                                op2 = get_opcode(encoding_source, 'op2')
> +                                crn = get_opcode(encoding_source, 'CRn')
> +                                crm = get_opcode(encoding_source, 'CRm')
> +                                encoding_str=f"{op0} {op1} {crn} {crm} {op2}"
> +
> +                # ID regs are assumed within this scope
> +                if op0 == 3 and (op1 == 0 or op1 == 1 or op1 == 3) and \
> +                   crn == 0 and (crm >= 0 and crm <= 7) and (op2 >= 0 and op2 <= 7):
> +                    idregs[reg_name] = encoding_str
> +
> +    return idregs
> +
> +
> +
> diff --git a/scripts/update-aarch64-cpu-sysregs-header.py b/scripts/update-aarch64-cpu-sysregs-header.py
> index 8c337147dd..43107264e9 100755
> --- a/scripts/update-aarch64-cpu-sysregs-header.py
> +++ b/scripts/update-aarch64-cpu-sysregs-header.py
> @@ -17,90 +17,7 @@
> import json
> import os
> import sys
> -
> -# Some regs have op code values like 000x, 001x. Anyway we don't need
> -# them. Besides some regs are undesired in the generated file such as
> -# VMPIDR_EL2 and VPIDR_EL2 which are outside of the IDreg scope we
> -# are interested in and are tricky to decode as their system accessor
> -# refer to MPIDR_EL1/MIDR_EL1 respectively
> -
> -skiplist = ['ALLINT', 'PM', 'S1_', 'S3_', 'SVCR', \
> -            'VMPIDR_EL2', 'VPIDR_EL2']
> -
> -# returns the int value of a given @opcode for a reg @encoding
> -def get_opcode(encoding, opcode):
> -    fvalue = encoding.get(opcode)
> -    if fvalue:
> -        value = fvalue.get('value')
> -        if isinstance(value, str):
> -            value = value.strip("'")
> -            value = int(value, 2)
> -            return value
> -    return -1
> -
> -def extract_idregs_from_registers_json(filename):
> -    """
> -    Load a Registers.json file and extract all ID registers, decode their
> -    opcode and dump the information in target/arm/cpu-sysregs.h.inc
> -
> -    Args:
> -        filename (str): The path to the Registers.json
> -    returns:
> -        idregs: list of ID regs and their encoding
> -    """
> -    if not os.path.exists(filename):
> -        print(f"Error: {filename} could not be found!")
> -        return {}
> -
> -    try:
> -        with open(filename, 'r') as f:
> -            register_data = json.load(f)
> -
> -    except json.JSONDecodeError:
> -        print(f"Could not decode json from '{filename}'!")
> -        return {}
> -    except Exception as e:
> -        print(f"Unexpected error while reading {filename}: {e}")
> -        return {}
> -
> -    registers = [r for r in register_data if isinstance(r, dict) and \
> -                r.get('_type') == 'Register']
> -
> -    idregs = {}
> -
> -    for register in registers:
> -        reg_name = register.get('name')
> -
> -        is_skipped = any(term in (reg_name or "").upper() for term in skiplist)
> -
> -        if reg_name and not is_skipped:
> -            accessors = register.get('accessors', [])
> -
> -            for accessor in accessors:
> -                type = accessor.get('_type')
> -                if type in ['Accessors.SystemAccessor']:
> -                    encoding_list = accessor.get('encoding')
> -
> -                    if isinstance(encoding_list, list) and encoding_list and \
> -                       isinstance(encoding_list[0], dict):
> -                        encoding_wrapper = encoding_list[0]
> -                        encoding_source = encoding_wrapper.get('encodings', \
> -                                                               encoding_wrapper)
> -
> -                        if isinstance(encoding_source, dict):
> -                                op0 = get_opcode(encoding_source, 'op0')
> -                                op1 = get_opcode(encoding_source, 'op1')
> -                                op2 = get_opcode(encoding_source, 'op2')
> -                                crn = get_opcode(encoding_source, 'CRn')
> -                                crm = get_opcode(encoding_source, 'CRm')
> -                                encoding_str=f"{op0} {op1} {crn} {crm} {op2}"
> -
> -                # ID regs are assumed within this scope
> -                if op0 == 3 and (op1 == 0 or op1 == 1 or op1 == 3) and \
> -                   crn == 0 and (crm >= 0 and crm <= 7) and (op2 >= 0 and op2 <= 7):
> -                    idregs[reg_name] = encoding_str
> -
> -    return idregs
> +from aarch64_sysreg_helpers import extract_idregs_from_registers_json
> 
> if __name__ == "__main__":
>     # Single arg expected: the path to the Registers.json file
> -- 
> 2.53.0
> 

Reviewed-by: Khushit Shah <khushit.shah@nutanix.com>

[RFC PATCH v7 06/18] scripts: Introduce scripts/update-aarch64-cpu-sysreg-properties.py

[Eric Auger]

Introduce a script that takes as input the Registers.json file
delivered in the AARCHMRS Features Model downloadable from the
Arm Developer A-Profile Architecture Exploration Tools page:
https://developer.arm.com/Architectures/A-Profile%20Architecture#Downloads
and automates the generation of system register properties definitions.

generates target/arm/cpu-idregs.h.inc containing definitions for
feature ID registers.

We only care about IDregs with opcodes satisfying:
op0 = 3, op1 = {0,1,3}, crn = 0, crm within [0, 7], op2 within [0, 7]

Signed-off-by: Eric Auger <eric.auger@redhat.com>

---

v5 -> v6
- add ident
---
 .../update-aarch64-cpu-sysreg-properties.py   | 166 ++++++++++++++++++
 1 file changed, 166 insertions(+)
 create mode 100644 scripts/update-aarch64-cpu-sysreg-properties.py

diff --git a/scripts/update-aarch64-cpu-sysreg-properties.py b/scripts/update-aarch64-cpu-sysreg-properties.py
new file mode 100644
index 0000000000..6f5edb88d2
--- /dev/null
+++ b/scripts/update-aarch64-cpu-sysreg-properties.py
@@ -0,0 +1,166 @@
+#!/usr/bin/env python3
+
+# This script takes as input the Registers.json file delivered in
+# the AARCHMRS Features Model downloadable from the Arm Developer
+# A-Profile Architecture Exploration Tools page:
+# https://developer.arm.com/Architectures/A-Profile%20Architecture#Downloads
+# and outputs target/arm/cpu-idregs.h.inc content.
+# ID regs are defined using this pattern:
+#
+# IDREG_START(REG)
+#    IDREG_FIELD(REG, FIELD, SHIFT, LENGTH)
+# ...
+# IDREG_END(REG)
+#
+# Copyright (C) 2026 Red Hat, Inc.
+#
+# Authors: Eric Auger <eric.auger@redhat.com>
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+
+import json
+import os
+import sys
+from aarch64_sysreg_helpers import extract_idregs_from_registers_json
+
+def collect_fields(item, bit_offset=0):
+    """
+    Recursively finds all field-like objects, handling Fields.Array,
+    Fields.ArrayField, and ConditionalField structures.
+    Applies bit_offset from containers to child fields.
+    """
+    fields = []
+    if not isinstance(item, dict):
+        return fields
+
+    _type = item.get('_type', '')
+
+    # Array types (for example CLIDR_EL1 Ctype<n>, Ttype<n>)
+    if _type == 'Fields.Array':
+        name_template = item.get('name') or item.get('label', '')
+        index_info = item.get('indexes', [{}])[0]
+        start_idx = index_info.get('start', 0)
+        count = index_info.get('width', 0)
+
+        full_range = item.get('rangeset', [{}])[0]
+        bit_start = full_range.get('start', 0) + bit_offset
+        elem_width = full_range.get('width', 0) // count if count else 0
+
+        for i in range(count):
+            idx = start_idx + i
+            # Correctly handle indexed names like Ctype1, Ctype2
+            field_name = name_template.replace('<n>', str(idx))
+            fields.append({
+                'name': field_name,
+                'rangeset': [{
+                    'start': bit_start + (i * elem_width),
+                    'width': elem_width
+                }],
+                '_type': 'Fields.Field'
+            })
+        return fields
+
+    # ConditionalFields
+    elif _type == 'Fields.ConditionalField':
+        inner_offset = bit_offset
+        if item.get('rangeset'):
+            # Parent container defines the absolute start bit
+            inner_offset = item['rangeset'][0].get('start', bit_offset)
+
+        for entry in item.get('fields', []):
+            inner = entry.get('field')
+            if inner:
+                fields.extend(collect_fields(inner, inner_offset))
+        return fields
+
+    # Normal Field Types
+    leaf_types = ['Fields.Field', 'Fields.ConstantField',
+                  'Fields.EnumeratedField', 'Fields.Bitfield']
+    if _type in leaf_types:
+        field_copy = item.copy()
+        if field_copy.get('rangeset'):
+            new_ranges = []
+            for r in field_copy['rangeset']:
+                nr = r.copy()
+                # Apply the cumulative offset to the field's start bit
+                nr['start'] = r.get('start', 0) + bit_offset
+                new_ranges.append(nr)
+            field_copy['rangeset'] = new_ranges
+        fields.append(field_copy)
+        return fields
+
+    # Traverse the hierarchy for other cases
+    for key in ['fields', 'values', 'fieldsets']:
+        for nested in item.get(key, []):
+            fields.extend(collect_fields(nested, bit_offset))
+
+    return fields
+
+
+def generate_sysreg_properties_from_registers_json(id_reg_names, raw_json_path):
+    with open(raw_json_path, 'r') as f:
+        register_data = json.load(f)
+
+    regs = {r.get('name'): r for r in register_data if r.get('_type') == 'Register'}
+
+    final_output = ""
+
+    for reg_name in id_reg_names:
+        register = regs.get(reg_name)
+        if not register:
+            continue
+
+        final_output += f"IDREG_START({reg_name})\n"
+
+        unique_fields = {}
+        for fieldset in register.get('fieldsets', []):
+            candidates = collect_fields(fieldset)
+            for val in candidates:
+                name = (val.get('name') or val.get('label', '')).strip()
+                if not name or "RESERVED" in name.upper():
+                    continue
+                for r in val.get('rangeset', []):
+                    lsb = int(r.get('start'))
+                    width = r.get('width')
+                    msb = lsb + int(width) - 1
+
+                    # Only keep the fields with the highest MSB
+                    # needed fir CCSIDR_EL1
+                    if name not in unique_fields or msb > unique_fields[name]['msb']:
+                        unique_fields[name] = {'lsb': lsb, 'msb': msb, 'width': width}
+
+        # Sort decreasing lsbs
+        sorted_fields = sorted(unique_fields.items(),
+                               key=lambda x: x[1]['lsb'], reverse=True)
+
+        for name, bits in sorted_fields:
+            line = (f"    IDREG_FIELD({reg_name}, "
+                    f"{name}, {bits['lsb']}, {bits['width']})\n")
+            final_output += line
+        final_output += f"IDREG_END({reg_name})\n"
+        final_output += "\n"
+
+    os.makedirs("target/arm", exist_ok=True)
+    with open("target/arm/cpu-idregs.h.inc", 'w') as f:
+        f.write("/* AUTOMATICALLY GENERATED, DO NOT MODIFY */\n\n")
+        f.write("/* SPDX-License-Identifier: GPL-2.0-or-later */\n\n")
+        f.write("/* IDREG_START(REG) */\n")
+        f.write("/*     IDREG_FIELD(REG, FIELD, SHIFT, LENGTH) */\n")
+        f.write("/* ... */\n")
+        f.write("/* IDREG_END(REG) */\n\n")
+        f.write(final_output)
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("Usage: python scripts/update-aarch64-cpu-sysreg-properties.py "
+              "<path_to_registers_json>")
+    else:
+        json_path = sys.argv[1]
+
+        id_regs_dict = extract_idregs_from_registers_json(json_path)
+        sorted_names = sorted(id_regs_dict.keys())
+
+        if sorted_names:
+            generate_sysreg_properties_from_registers_json(sorted_names, json_path)
+            print("Generated target/arm/cpu-idregs.h.inc")
-- 
2.53.0

[RFC PATCH v7 07/18] target/arm/cpu-idregs.h.inc: generate with script

[Eric Auger]

Generate ID reg definitions with the scripts/update-aarch64-cpu-sysreg-properties.py
based on AARCHMRS_OPENSOURCE_A_profile_FAT-2026-03 Registers.json

Each register and fields are described with this pattern:

IDREG_START(REG)
IDREG_FIELD(REG, FIELD, SHIFT, LENGTH)
...
IDREG_END(REG)

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Suggested-by: Khushit Shah <khushit.shah@nutanix.com>
Suggested-by: Shaju Abraham <shaju.abraham@nutanix.com>
---
 target/arm/cpu-idregs.h.inc | 617 ++++++++++++++++++++++++++++++++++++
 1 file changed, 617 insertions(+)
 create mode 100644 target/arm/cpu-idregs.h.inc

diff --git a/target/arm/cpu-idregs.h.inc b/target/arm/cpu-idregs.h.inc
new file mode 100644
index 0000000000..a10d750123
--- /dev/null
+++ b/target/arm/cpu-idregs.h.inc
@@ -0,0 +1,617 @@
+/* AUTOMATICALLY GENERATED, DO NOT MODIFY */
+
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+/* IDREG_START(REG) */
+/*     IDREG_FIELD(REG, FIELD, SHIFT, LENGTH) */
+/* ... */
+/* IDREG_END(REG) */
+
+IDREG_START(AIDR_EL1)
+IDREG_END(AIDR_EL1)
+
+IDREG_START(CCSIDR2_EL1)
+    IDREG_FIELD(CCSIDR2_EL1, NumSets, 0, 24)
+IDREG_END(CCSIDR2_EL1)
+
+IDREG_START(CCSIDR_EL1)
+    IDREG_FIELD(CCSIDR_EL1, NumSets, 32, 24)
+    IDREG_FIELD(CCSIDR_EL1, Associativity, 3, 21)
+    IDREG_FIELD(CCSIDR_EL1, LineSize, 0, 3)
+IDREG_END(CCSIDR_EL1)
+
+IDREG_START(CLIDR_EL1)
+    IDREG_FIELD(CLIDR_EL1, Ttype7, 45, 2)
+    IDREG_FIELD(CLIDR_EL1, Ttype6, 43, 2)
+    IDREG_FIELD(CLIDR_EL1, Ttype5, 41, 2)
+    IDREG_FIELD(CLIDR_EL1, Ttype4, 39, 2)
+    IDREG_FIELD(CLIDR_EL1, Ttype3, 37, 2)
+    IDREG_FIELD(CLIDR_EL1, Ttype2, 35, 2)
+    IDREG_FIELD(CLIDR_EL1, Ttype1, 33, 2)
+    IDREG_FIELD(CLIDR_EL1, ICB, 30, 3)
+    IDREG_FIELD(CLIDR_EL1, LoUU, 27, 3)
+    IDREG_FIELD(CLIDR_EL1, LoC, 24, 3)
+    IDREG_FIELD(CLIDR_EL1, LoUIS, 21, 3)
+    IDREG_FIELD(CLIDR_EL1, Ctype7, 18, 3)
+    IDREG_FIELD(CLIDR_EL1, Ctype6, 15, 3)
+    IDREG_FIELD(CLIDR_EL1, Ctype5, 12, 3)
+    IDREG_FIELD(CLIDR_EL1, Ctype4, 9, 3)
+    IDREG_FIELD(CLIDR_EL1, Ctype3, 6, 3)
+    IDREG_FIELD(CLIDR_EL1, Ctype2, 3, 3)
+    IDREG_FIELD(CLIDR_EL1, Ctype1, 0, 3)
+IDREG_END(CLIDR_EL1)
+
+IDREG_START(CTR_EL0)
+    IDREG_FIELD(CTR_EL0, TminLine, 32, 6)
+    IDREG_FIELD(CTR_EL0, DIC, 29, 1)
+    IDREG_FIELD(CTR_EL0, IDC, 28, 1)
+    IDREG_FIELD(CTR_EL0, CWG, 24, 4)
+    IDREG_FIELD(CTR_EL0, ERG, 20, 4)
+    IDREG_FIELD(CTR_EL0, DminLine, 16, 4)
+    IDREG_FIELD(CTR_EL0, L1Ip, 14, 2)
+    IDREG_FIELD(CTR_EL0, IminLine, 0, 4)
+IDREG_END(CTR_EL0)
+
+IDREG_START(DCZID_EL0)
+    IDREG_FIELD(DCZID_EL0, TBS, 5, 4)
+    IDREG_FIELD(DCZID_EL0, DZP, 4, 1)
+    IDREG_FIELD(DCZID_EL0, BS, 0, 4)
+IDREG_END(DCZID_EL0)
+
+IDREG_START(GMID_EL1)
+    IDREG_FIELD(GMID_EL1, BS, 0, 4)
+IDREG_END(GMID_EL1)
+
+IDREG_START(ID_AA64AFR0_EL1)
+IDREG_END(ID_AA64AFR0_EL1)
+
+IDREG_START(ID_AA64AFR1_EL1)
+IDREG_END(ID_AA64AFR1_EL1)
+
+IDREG_START(ID_AA64DFR0_EL1)
+    IDREG_FIELD(ID_AA64DFR0_EL1, HPMN0, 60, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, ExtTrcBuff, 56, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, BRBE, 52, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, MTPMU, 48, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, TraceBuffer, 44, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, TraceFilt, 40, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, DoubleLock, 36, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, PMSVer, 32, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, CTX_CMPs, 28, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, WRPs, 20, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, PMSS, 16, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, BRPs, 12, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, PMUVer, 8, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, TraceVer, 4, 4)
+    IDREG_FIELD(ID_AA64DFR0_EL1, DebugVer, 0, 4)
+IDREG_END(ID_AA64DFR0_EL1)
+
+IDREG_START(ID_AA64DFR1_EL1)
+    IDREG_FIELD(ID_AA64DFR1_EL1, ABL_CMPs, 56, 8)
+    IDREG_FIELD(ID_AA64DFR1_EL1, DPFZS, 52, 4)
+    IDREG_FIELD(ID_AA64DFR1_EL1, EBEP, 48, 4)
+    IDREG_FIELD(ID_AA64DFR1_EL1, ITE, 44, 4)
+    IDREG_FIELD(ID_AA64DFR1_EL1, ABLE, 40, 4)
+    IDREG_FIELD(ID_AA64DFR1_EL1, PMICNTR, 36, 4)
+    IDREG_FIELD(ID_AA64DFR1_EL1, SPMU, 32, 4)
+    IDREG_FIELD(ID_AA64DFR1_EL1, CTX_CMPs, 24, 8)
+    IDREG_FIELD(ID_AA64DFR1_EL1, WRPs, 16, 8)
+    IDREG_FIELD(ID_AA64DFR1_EL1, BRPs, 8, 8)
+    IDREG_FIELD(ID_AA64DFR1_EL1, SYSPMUID, 0, 8)
+IDREG_END(ID_AA64DFR1_EL1)
+
+IDREG_START(ID_AA64DFR2_EL1)
+    IDREG_FIELD(ID_AA64DFR2_EL1, TRBE_EXC, 24, 4)
+    IDREG_FIELD(ID_AA64DFR2_EL1, SPE_nVM, 20, 4)
+    IDREG_FIELD(ID_AA64DFR2_EL1, SPE_EXC, 16, 4)
+    IDREG_FIELD(ID_AA64DFR2_EL1, BWE, 4, 4)
+    IDREG_FIELD(ID_AA64DFR2_EL1, STEP, 0, 4)
+IDREG_END(ID_AA64DFR2_EL1)
+
+IDREG_START(ID_AA64FPFR0_EL1)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, F8CVT, 31, 1)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, F8FMA, 30, 1)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, F8DP4, 29, 1)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, F8DP2, 28, 1)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, F8MM8, 27, 1)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, F8MM4, 26, 1)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, F16MM2, 15, 1)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, F8E4M3, 1, 1)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, F8E5M2, 0, 1)
+IDREG_END(ID_AA64FPFR0_EL1)
+
+IDREG_START(ID_AA64ISAR0_EL1)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, RNDR, 60, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, TLB, 56, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, TS, 52, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, FHM, 48, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, DP, 44, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, SM4, 40, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, SM3, 36, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, SHA3, 32, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, RDM, 28, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, Atomic, 20, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, CRC32, 16, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, SHA2, 12, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, SHA1, 8, 4)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, AES, 4, 4)
+IDREG_END(ID_AA64ISAR0_EL1)
+
+IDREG_START(ID_AA64ISAR1_EL1)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, LS64, 60, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, XS, 56, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, I8MM, 52, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, DGH, 48, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, BF16, 44, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, SPECRES, 40, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, SB, 36, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, FRINTTS, 32, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, GPI, 28, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, GPA, 24, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, LRCPC, 20, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, FCMA, 16, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, JSCVT, 12, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, API, 8, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, APA, 4, 4)
+    IDREG_FIELD(ID_AA64ISAR1_EL1, DPB, 0, 4)
+IDREG_END(ID_AA64ISAR1_EL1)
+
+IDREG_START(ID_AA64ISAR2_EL1)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, ATS1A, 60, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, LUT, 56, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, CSSC, 52, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, RPRFM, 48, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, PCDPHINT, 44, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, PRFMSLC, 40, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, SYSINSTR_128, 36, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, SYSREG_128, 32, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, CLRBHB, 28, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, PAC_frac, 24, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, BC, 20, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, MOPS, 16, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, APA3, 12, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, GPA3, 8, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, RPRES, 4, 4)
+    IDREG_FIELD(ID_AA64ISAR2_EL1, WFxT, 0, 4)
+IDREG_END(ID_AA64ISAR2_EL1)
+
+IDREG_START(ID_AA64ISAR3_EL1)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, LSCP, 44, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, LSCSHINT, 40, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, MTETC, 36, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, PAC_frac2, 32, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, FPRCVT, 28, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, LSUI, 24, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, OCCMO, 20, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, LSFE, 16, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, PACM, 12, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, TLBIW, 8, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, FAMINMAX, 4, 4)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, CPA, 0, 4)
+IDREG_END(ID_AA64ISAR3_EL1)
+
+IDREG_START(ID_AA64MMFR0_EL1)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, ECV, 60, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, FGT, 56, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, ExS, 44, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran4_2, 40, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran64_2, 36, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran16_2, 32, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran4, 28, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran64, 24, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran16, 20, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, BigEndEL0, 16, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, SNSMem, 12, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, BigEnd, 8, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, ASIDBits, 4, 4)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, PARange, 0, 4)
+IDREG_END(ID_AA64MMFR0_EL1)
+
+IDREG_START(ID_AA64MMFR1_EL1)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, ECBHB, 60, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, CMOW, 56, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, TIDCP1, 52, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, nTLBPA, 48, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, AFP, 44, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, HCX, 40, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, ETS, 36, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, TWED, 32, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, XNX, 28, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, SpecSEI, 24, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, PAN, 20, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, LO, 16, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, HPDS, 12, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, VH, 8, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, VMIDBits, 4, 4)
+    IDREG_FIELD(ID_AA64MMFR1_EL1, HAFDBS, 0, 4)
+IDREG_END(ID_AA64MMFR1_EL1)
+
+IDREG_START(ID_AA64MMFR2_EL1)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, E0PD, 60, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, EVT, 56, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, BBM, 52, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, TTL, 48, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, FWB, 40, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, IDS, 36, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, AT, 32, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, ST, 28, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, NV, 24, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, CCIDX, 20, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, VARange, 16, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, IESB, 12, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, LSM, 8, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, UAO, 4, 4)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, CnP, 0, 4)
+IDREG_END(ID_AA64MMFR2_EL1)
+
+IDREG_START(ID_AA64MMFR3_EL1)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, Spec_FPACC, 60, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, ADERR, 56, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, SDERR, 52, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, ANERR, 44, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, SNERR, 40, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, D128_2, 36, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, D128, 32, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, MEC, 28, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, AIE, 24, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, S2POE, 20, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, S1POE, 16, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, S2PIE, 12, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, S1PIE, 8, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, SCTLRX, 4, 4)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, TCRX, 0, 4)
+IDREG_END(ID_AA64MMFR3_EL1)
+
+IDREG_START(ID_AA64MMFR4_EL1)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, MTEFGT, 60, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, SCRX, 56, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, TEV, 52, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, TPS, 48, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, SRMASK, 44, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, TLBID, 40, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, E3DSE, 36, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, EAESR, 32, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, RMEGDI, 28, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, E2H0, 24, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, NV_frac, 20, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, FGWTE3, 16, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, HACDBS, 12, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, ASID2, 8, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, EIESB, 4, 4)
+    IDREG_FIELD(ID_AA64MMFR4_EL1, PoPS, 0, 4)
+IDREG_END(ID_AA64MMFR4_EL1)
+
+IDREG_START(ID_AA64PFR0_EL1)
+    IDREG_FIELD(ID_AA64PFR0_EL1, CSV3, 60, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, CSV2, 56, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, RME, 52, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, DIT, 48, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, AMU, 44, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, MPAM, 40, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, SEL2, 36, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, SVE, 32, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, RAS, 28, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, GIC, 24, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, AdvSIMD, 20, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, FP, 16, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, EL3, 12, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, EL2, 8, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, EL1, 4, 4)
+    IDREG_FIELD(ID_AA64PFR0_EL1, EL0, 0, 4)
+IDREG_END(ID_AA64PFR0_EL1)
+
+IDREG_START(ID_AA64PFR1_EL1)
+    IDREG_FIELD(ID_AA64PFR1_EL1, PFAR, 60, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, DF2, 56, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, MTEX, 52, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, THE, 48, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, GCS, 44, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, MTE_frac, 40, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, NMI, 36, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, CSV2_frac, 32, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, RNDR_trap, 28, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, SME, 24, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, MPAM_frac, 16, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, RAS_frac, 12, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, MTE, 8, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, SSBS, 4, 4)
+    IDREG_FIELD(ID_AA64PFR1_EL1, BT, 0, 4)
+IDREG_END(ID_AA64PFR1_EL1)
+
+IDREG_START(ID_AA64PFR2_EL1)
+    IDREG_FIELD(ID_AA64PFR2_EL1, VMTETCL, 44, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, VMTETC, 40, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, VMTE, 36, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, FPMR, 32, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, MPAM2, 28, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, FGDT, 24, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, MTEEIRG, 20, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, UINJ, 16, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, GCIE, 12, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, MTEFAR, 8, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, MTESTOREONLY, 4, 4)
+    IDREG_FIELD(ID_AA64PFR2_EL1, MTEPERM, 0, 4)
+IDREG_END(ID_AA64PFR2_EL1)
+
+IDREG_START(ID_AA64SMFR0_EL1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, FA64, 63, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, LUT6, 61, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, LUTv2, 60, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, SMEver, 56, 4)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, I16I64, 52, 4)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, F64F64, 48, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, I16I32, 44, 4)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, B16B16, 43, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, F16F16, 42, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, F8F16, 41, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, F8F32, 40, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, I8I32, 36, 4)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, F16F32, 35, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, B16F32, 34, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, BI32I32, 33, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, F32F32, 32, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, SF8FMA, 30, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, SF8DP4, 29, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, SF8DP2, 28, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, SBitPerm, 25, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, AES, 24, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, SFEXPA, 23, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, STMOP, 16, 1)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, SMOP4, 0, 1)
+IDREG_END(ID_AA64SMFR0_EL1)
+
+IDREG_START(ID_AA64ZFR0_EL1)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, F64MM, 56, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, F32MM, 52, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, F16MM, 48, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, I8MM, 44, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, SM4, 40, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, SHA3, 32, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, B16B16, 24, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, BF16, 20, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, BitPerm, 16, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, EltPerm, 12, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, AES, 4, 4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, SVEver, 0, 4)
+IDREG_END(ID_AA64ZFR0_EL1)
+
+IDREG_START(ID_AFR0_EL1)
+IDREG_END(ID_AFR0_EL1)
+
+IDREG_START(ID_DFR0_EL1)
+    IDREG_FIELD(ID_DFR0_EL1, TraceFilt, 28, 4)
+    IDREG_FIELD(ID_DFR0_EL1, PerfMon, 24, 4)
+    IDREG_FIELD(ID_DFR0_EL1, MProfDbg, 20, 4)
+    IDREG_FIELD(ID_DFR0_EL1, MMapTrc, 16, 4)
+    IDREG_FIELD(ID_DFR0_EL1, CopTrc, 12, 4)
+    IDREG_FIELD(ID_DFR0_EL1, MMapDbg, 8, 4)
+    IDREG_FIELD(ID_DFR0_EL1, CopSDbg, 4, 4)
+    IDREG_FIELD(ID_DFR0_EL1, CopDbg, 0, 4)
+IDREG_END(ID_DFR0_EL1)
+
+IDREG_START(ID_DFR1_EL1)
+    IDREG_FIELD(ID_DFR1_EL1, HPMN0, 4, 4)
+    IDREG_FIELD(ID_DFR1_EL1, MTPMU, 0, 4)
+IDREG_END(ID_DFR1_EL1)
+
+IDREG_START(ID_ISAR0_EL1)
+    IDREG_FIELD(ID_ISAR0_EL1, Divide, 24, 4)
+    IDREG_FIELD(ID_ISAR0_EL1, Debug, 20, 4)
+    IDREG_FIELD(ID_ISAR0_EL1, Coproc, 16, 4)
+    IDREG_FIELD(ID_ISAR0_EL1, CmpBranch, 12, 4)
+    IDREG_FIELD(ID_ISAR0_EL1, BitField, 8, 4)
+    IDREG_FIELD(ID_ISAR0_EL1, BitCount, 4, 4)
+    IDREG_FIELD(ID_ISAR0_EL1, Swap, 0, 4)
+IDREG_END(ID_ISAR0_EL1)
+
+IDREG_START(ID_ISAR1_EL1)
+    IDREG_FIELD(ID_ISAR1_EL1, Jazelle, 28, 4)
+    IDREG_FIELD(ID_ISAR1_EL1, Interwork, 24, 4)
+    IDREG_FIELD(ID_ISAR1_EL1, Immediate, 20, 4)
+    IDREG_FIELD(ID_ISAR1_EL1, IfThen, 16, 4)
+    IDREG_FIELD(ID_ISAR1_EL1, Extend, 12, 4)
+    IDREG_FIELD(ID_ISAR1_EL1, Except_AR, 8, 4)
+    IDREG_FIELD(ID_ISAR1_EL1, Except, 4, 4)
+    IDREG_FIELD(ID_ISAR1_EL1, Endian, 0, 4)
+IDREG_END(ID_ISAR1_EL1)
+
+IDREG_START(ID_ISAR2_EL1)
+    IDREG_FIELD(ID_ISAR2_EL1, Reversal, 28, 4)
+    IDREG_FIELD(ID_ISAR2_EL1, PSR_AR, 24, 4)
+    IDREG_FIELD(ID_ISAR2_EL1, MultU, 20, 4)
+    IDREG_FIELD(ID_ISAR2_EL1, MultS, 16, 4)
+    IDREG_FIELD(ID_ISAR2_EL1, Mult, 12, 4)
+    IDREG_FIELD(ID_ISAR2_EL1, MultiAccessInt, 8, 4)
+    IDREG_FIELD(ID_ISAR2_EL1, MemHint, 4, 4)
+    IDREG_FIELD(ID_ISAR2_EL1, LoadStore, 0, 4)
+IDREG_END(ID_ISAR2_EL1)
+
+IDREG_START(ID_ISAR3_EL1)
+    IDREG_FIELD(ID_ISAR3_EL1, T32EE, 28, 4)
+    IDREG_FIELD(ID_ISAR3_EL1, TrueNOP, 24, 4)
+    IDREG_FIELD(ID_ISAR3_EL1, T32Copy, 20, 4)
+    IDREG_FIELD(ID_ISAR3_EL1, TabBranch, 16, 4)
+    IDREG_FIELD(ID_ISAR3_EL1, SynchPrim, 12, 4)
+    IDREG_FIELD(ID_ISAR3_EL1, SVC, 8, 4)
+    IDREG_FIELD(ID_ISAR3_EL1, SIMD, 4, 4)
+    IDREG_FIELD(ID_ISAR3_EL1, Saturate, 0, 4)
+IDREG_END(ID_ISAR3_EL1)
+
+IDREG_START(ID_ISAR4_EL1)
+    IDREG_FIELD(ID_ISAR4_EL1, SWP_frac, 28, 4)
+    IDREG_FIELD(ID_ISAR4_EL1, PSR_M, 24, 4)
+    IDREG_FIELD(ID_ISAR4_EL1, SynchPrim_frac, 20, 4)
+    IDREG_FIELD(ID_ISAR4_EL1, Barrier, 16, 4)
+    IDREG_FIELD(ID_ISAR4_EL1, SMC, 12, 4)
+    IDREG_FIELD(ID_ISAR4_EL1, Writeback, 8, 4)
+    IDREG_FIELD(ID_ISAR4_EL1, WithShifts, 4, 4)
+    IDREG_FIELD(ID_ISAR4_EL1, Unpriv, 0, 4)
+IDREG_END(ID_ISAR4_EL1)
+
+IDREG_START(ID_ISAR5_EL1)
+    IDREG_FIELD(ID_ISAR5_EL1, VCMA, 28, 4)
+    IDREG_FIELD(ID_ISAR5_EL1, RDM, 24, 4)
+    IDREG_FIELD(ID_ISAR5_EL1, CRC32, 16, 4)
+    IDREG_FIELD(ID_ISAR5_EL1, SHA2, 12, 4)
+    IDREG_FIELD(ID_ISAR5_EL1, SHA1, 8, 4)
+    IDREG_FIELD(ID_ISAR5_EL1, AES, 4, 4)
+    IDREG_FIELD(ID_ISAR5_EL1, SEVL, 0, 4)
+IDREG_END(ID_ISAR5_EL1)
+
+IDREG_START(ID_ISAR6_EL1)
+    IDREG_FIELD(ID_ISAR6_EL1, CLRBHB, 28, 4)
+    IDREG_FIELD(ID_ISAR6_EL1, I8MM, 24, 4)
+    IDREG_FIELD(ID_ISAR6_EL1, BF16, 20, 4)
+    IDREG_FIELD(ID_ISAR6_EL1, SPECRES, 16, 4)
+    IDREG_FIELD(ID_ISAR6_EL1, SB, 12, 4)
+    IDREG_FIELD(ID_ISAR6_EL1, FHM, 8, 4)
+    IDREG_FIELD(ID_ISAR6_EL1, DP, 4, 4)
+    IDREG_FIELD(ID_ISAR6_EL1, JSCVT, 0, 4)
+IDREG_END(ID_ISAR6_EL1)
+
+IDREG_START(ID_MMFR0_EL1)
+    IDREG_FIELD(ID_MMFR0_EL1, InnerShr, 28, 4)
+    IDREG_FIELD(ID_MMFR0_EL1, FCSE, 24, 4)
+    IDREG_FIELD(ID_MMFR0_EL1, AuxReg, 20, 4)
+    IDREG_FIELD(ID_MMFR0_EL1, TCM, 16, 4)
+    IDREG_FIELD(ID_MMFR0_EL1, ShareLvl, 12, 4)
+    IDREG_FIELD(ID_MMFR0_EL1, OuterShr, 8, 4)
+    IDREG_FIELD(ID_MMFR0_EL1, PMSA, 4, 4)
+    IDREG_FIELD(ID_MMFR0_EL1, VMSA, 0, 4)
+IDREG_END(ID_MMFR0_EL1)
+
+IDREG_START(ID_MMFR1_EL1)
+    IDREG_FIELD(ID_MMFR1_EL1, BPred, 28, 4)
+    IDREG_FIELD(ID_MMFR1_EL1, L1TstCln, 24, 4)
+    IDREG_FIELD(ID_MMFR1_EL1, L1Uni, 20, 4)
+    IDREG_FIELD(ID_MMFR1_EL1, L1Hvd, 16, 4)
+    IDREG_FIELD(ID_MMFR1_EL1, L1UniSW, 12, 4)
+    IDREG_FIELD(ID_MMFR1_EL1, L1HvdSW, 8, 4)
+    IDREG_FIELD(ID_MMFR1_EL1, L1UniVA, 4, 4)
+    IDREG_FIELD(ID_MMFR1_EL1, L1HvdVA, 0, 4)
+IDREG_END(ID_MMFR1_EL1)
+
+IDREG_START(ID_MMFR2_EL1)
+    IDREG_FIELD(ID_MMFR2_EL1, HWAccFlg, 28, 4)
+    IDREG_FIELD(ID_MMFR2_EL1, WFIStall, 24, 4)
+    IDREG_FIELD(ID_MMFR2_EL1, MemBarr, 20, 4)
+    IDREG_FIELD(ID_MMFR2_EL1, UniTLB, 16, 4)
+    IDREG_FIELD(ID_MMFR2_EL1, HvdTLB, 12, 4)
+    IDREG_FIELD(ID_MMFR2_EL1, L1HvdRng, 8, 4)
+    IDREG_FIELD(ID_MMFR2_EL1, L1HvdBG, 4, 4)
+    IDREG_FIELD(ID_MMFR2_EL1, L1HvdFG, 0, 4)
+IDREG_END(ID_MMFR2_EL1)
+
+IDREG_START(ID_MMFR3_EL1)
+    IDREG_FIELD(ID_MMFR3_EL1, Supersec, 28, 4)
+    IDREG_FIELD(ID_MMFR3_EL1, CMemSz, 24, 4)
+    IDREG_FIELD(ID_MMFR3_EL1, CohWalk, 20, 4)
+    IDREG_FIELD(ID_MMFR3_EL1, PAN, 16, 4)
+    IDREG_FIELD(ID_MMFR3_EL1, MaintBcst, 12, 4)
+    IDREG_FIELD(ID_MMFR3_EL1, BPMaint, 8, 4)
+    IDREG_FIELD(ID_MMFR3_EL1, CMaintSW, 4, 4)
+    IDREG_FIELD(ID_MMFR3_EL1, CMaintVA, 0, 4)
+IDREG_END(ID_MMFR3_EL1)
+
+IDREG_START(ID_MMFR4_EL1)
+    IDREG_FIELD(ID_MMFR4_EL1, EVT, 28, 4)
+    IDREG_FIELD(ID_MMFR4_EL1, CCIDX, 24, 4)
+    IDREG_FIELD(ID_MMFR4_EL1, LSM, 20, 4)
+    IDREG_FIELD(ID_MMFR4_EL1, HPDS, 16, 4)
+    IDREG_FIELD(ID_MMFR4_EL1, CnP, 12, 4)
+    IDREG_FIELD(ID_MMFR4_EL1, XNX, 8, 4)
+    IDREG_FIELD(ID_MMFR4_EL1, AC2, 4, 4)
+    IDREG_FIELD(ID_MMFR4_EL1, SpecSEI, 0, 4)
+IDREG_END(ID_MMFR4_EL1)
+
+IDREG_START(ID_MMFR5_EL1)
+    IDREG_FIELD(ID_MMFR5_EL1, nTLBPA, 4, 4)
+    IDREG_FIELD(ID_MMFR5_EL1, ETS, 0, 4)
+IDREG_END(ID_MMFR5_EL1)
+
+IDREG_START(ID_PFR0_EL1)
+    IDREG_FIELD(ID_PFR0_EL1, RAS, 28, 4)
+    IDREG_FIELD(ID_PFR0_EL1, DIT, 24, 4)
+    IDREG_FIELD(ID_PFR0_EL1, AMU, 20, 4)
+    IDREG_FIELD(ID_PFR0_EL1, CSV2, 16, 4)
+    IDREG_FIELD(ID_PFR0_EL1, State3, 12, 4)
+    IDREG_FIELD(ID_PFR0_EL1, State2, 8, 4)
+    IDREG_FIELD(ID_PFR0_EL1, State1, 4, 4)
+    IDREG_FIELD(ID_PFR0_EL1, State0, 0, 4)
+IDREG_END(ID_PFR0_EL1)
+
+IDREG_START(ID_PFR1_EL1)
+    IDREG_FIELD(ID_PFR1_EL1, GIC, 28, 4)
+    IDREG_FIELD(ID_PFR1_EL1, Virt_frac, 24, 4)
+    IDREG_FIELD(ID_PFR1_EL1, Sec_frac, 20, 4)
+    IDREG_FIELD(ID_PFR1_EL1, GenTimer, 16, 4)
+    IDREG_FIELD(ID_PFR1_EL1, Virtualization, 12, 4)
+    IDREG_FIELD(ID_PFR1_EL1, MProgMod, 8, 4)
+    IDREG_FIELD(ID_PFR1_EL1, Security, 4, 4)
+    IDREG_FIELD(ID_PFR1_EL1, ProgMod, 0, 4)
+IDREG_END(ID_PFR1_EL1)
+
+IDREG_START(ID_PFR2_EL1)
+    IDREG_FIELD(ID_PFR2_EL1, RAS_frac, 8, 4)
+    IDREG_FIELD(ID_PFR2_EL1, SSBS, 4, 4)
+    IDREG_FIELD(ID_PFR2_EL1, CSV3, 0, 4)
+IDREG_END(ID_PFR2_EL1)
+
+IDREG_START(MIDR_EL1)
+    IDREG_FIELD(MIDR_EL1, Implementer, 24, 8)
+    IDREG_FIELD(MIDR_EL1, Variant, 20, 4)
+    IDREG_FIELD(MIDR_EL1, Architecture, 16, 4)
+    IDREG_FIELD(MIDR_EL1, PartNum, 4, 12)
+    IDREG_FIELD(MIDR_EL1, Revision, 0, 4)
+IDREG_END(MIDR_EL1)
+
+IDREG_START(MPIDR_EL1)
+    IDREG_FIELD(MPIDR_EL1, Aff3, 32, 8)
+    IDREG_FIELD(MPIDR_EL1, U, 30, 1)
+    IDREG_FIELD(MPIDR_EL1, MT, 24, 1)
+    IDREG_FIELD(MPIDR_EL1, Aff2, 16, 8)
+    IDREG_FIELD(MPIDR_EL1, Aff1, 8, 8)
+    IDREG_FIELD(MPIDR_EL1, Aff0, 0, 8)
+IDREG_END(MPIDR_EL1)
+
+IDREG_START(MVFR0_EL1)
+    IDREG_FIELD(MVFR0_EL1, FPRound, 28, 4)
+    IDREG_FIELD(MVFR0_EL1, FPShVec, 24, 4)
+    IDREG_FIELD(MVFR0_EL1, FPSqrt, 20, 4)
+    IDREG_FIELD(MVFR0_EL1, FPDivide, 16, 4)
+    IDREG_FIELD(MVFR0_EL1, FPTrap, 12, 4)
+    IDREG_FIELD(MVFR0_EL1, FPDP, 8, 4)
+    IDREG_FIELD(MVFR0_EL1, FPSP, 4, 4)
+    IDREG_FIELD(MVFR0_EL1, SIMDReg, 0, 4)
+IDREG_END(MVFR0_EL1)
+
+IDREG_START(MVFR1_EL1)
+    IDREG_FIELD(MVFR1_EL1, SIMDFMAC, 28, 4)
+    IDREG_FIELD(MVFR1_EL1, FPHP, 24, 4)
+    IDREG_FIELD(MVFR1_EL1, SIMDHP, 20, 4)
+    IDREG_FIELD(MVFR1_EL1, SIMDSP, 16, 4)
+    IDREG_FIELD(MVFR1_EL1, SIMDInt, 12, 4)
+    IDREG_FIELD(MVFR1_EL1, SIMDLS, 8, 4)
+    IDREG_FIELD(MVFR1_EL1, FPDNaN, 4, 4)
+    IDREG_FIELD(MVFR1_EL1, FPFtZ, 0, 4)
+IDREG_END(MVFR1_EL1)
+
+IDREG_START(MVFR2_EL1)
+    IDREG_FIELD(MVFR2_EL1, FPMisc, 4, 4)
+    IDREG_FIELD(MVFR2_EL1, SIMDMisc, 0, 4)
+IDREG_END(MVFR2_EL1)
+
+IDREG_START(REVIDR_EL1)
+IDREG_END(REVIDR_EL1)
+
+IDREG_START(SMIDR_EL1)
+    IDREG_FIELD(SMIDR_EL1, NSMC, 56, 4)
+    IDREG_FIELD(SMIDR_EL1, HIP, 52, 4)
+    IDREG_FIELD(SMIDR_EL1, Affinity2, 32, 20)
+    IDREG_FIELD(SMIDR_EL1, Implementer, 24, 8)
+    IDREG_FIELD(SMIDR_EL1, Revision, 16, 8)
+    IDREG_FIELD(SMIDR_EL1, SMPS, 15, 1)
+    IDREG_FIELD(SMIDR_EL1, SH, 13, 2)
+    IDREG_FIELD(SMIDR_EL1, Affinity, 0, 12)
+IDREG_END(SMIDR_EL1)
+
-- 
2.53.0

[RFC PATCH v7 08/18] target/arm/cpu-idregs.h.inc: Generate enum values

[Eric Auger]

Modify the python script so that enum values are also
extracted from Registers.json.

If enum values are found, the field and its enum values are
defined within IDREG_FIELD_START/END. Each enum value is
defined with IDREG_FIELD_ARCH_VAL() macro.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 target/arm/cpu-idregs.h.inc                   | 2290 ++++++++++++++---
 .../update-aarch64-cpu-sysreg-properties.py   |   77 +-
 2 files changed, 1959 insertions(+), 408 deletions(-)

diff --git a/target/arm/cpu-idregs.h.inc b/target/arm/cpu-idregs.h.inc
index a10d750123..1c8b26133b 100644
--- a/target/arm/cpu-idregs.h.inc
+++ b/target/arm/cpu-idregs.h.inc
@@ -4,7 +4,11 @@
 
 /* IDREG_START(REG) */
 /*     IDREG_FIELD(REG, FIELD, SHIFT, LENGTH) */
+/*     or for fields with enum values */
+/*     IDREG_FIELD_START(REG, FIELD, SHIFT, LENGTH) */
+/*         IDREG_FIELD_ARCH_VAL(VALUE) */
 /* ... */
+/*     IDREG_FIELD_END(REG, FIELD) */
 /* IDREG_END(REG) */
 
 IDREG_START(AIDR_EL1)
@@ -28,7 +32,16 @@ IDREG_START(CLIDR_EL1)
     IDREG_FIELD(CLIDR_EL1, Ttype3, 37, 2)
     IDREG_FIELD(CLIDR_EL1, Ttype2, 35, 2)
     IDREG_FIELD(CLIDR_EL1, Ttype1, 33, 2)
-    IDREG_FIELD(CLIDR_EL1, ICB, 30, 3)
+    IDREG_FIELD_START(CLIDR_EL1, ICB, 30, 3)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+        IDREG_FIELD_ARCH_VAL(6)
+        IDREG_FIELD_ARCH_VAL(7)
+    IDREG_FIELD_END(CLIDR_EL1, ICB)
     IDREG_FIELD(CLIDR_EL1, LoUU, 27, 3)
     IDREG_FIELD(CLIDR_EL1, LoC, 24, 3)
     IDREG_FIELD(CLIDR_EL1, LoUIS, 21, 3)
@@ -43,12 +56,23 @@ IDREG_END(CLIDR_EL1)
 
 IDREG_START(CTR_EL0)
     IDREG_FIELD(CTR_EL0, TminLine, 32, 6)
-    IDREG_FIELD(CTR_EL0, DIC, 29, 1)
-    IDREG_FIELD(CTR_EL0, IDC, 28, 1)
+    IDREG_FIELD_START(CTR_EL0, DIC, 29, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(CTR_EL0, DIC)
+    IDREG_FIELD_START(CTR_EL0, IDC, 28, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(CTR_EL0, IDC)
     IDREG_FIELD(CTR_EL0, CWG, 24, 4)
     IDREG_FIELD(CTR_EL0, ERG, 20, 4)
     IDREG_FIELD(CTR_EL0, DminLine, 16, 4)
-    IDREG_FIELD(CTR_EL0, L1Ip, 14, 2)
+    IDREG_FIELD_START(CTR_EL0, L1Ip, 14, 2)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(CTR_EL0, L1Ip)
     IDREG_FIELD(CTR_EL0, IminLine, 0, 4)
 IDREG_END(CTR_EL0)
 
@@ -69,549 +93,2007 @@ IDREG_START(ID_AA64AFR1_EL1)
 IDREG_END(ID_AA64AFR1_EL1)
 
 IDREG_START(ID_AA64DFR0_EL1)
-    IDREG_FIELD(ID_AA64DFR0_EL1, HPMN0, 60, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, ExtTrcBuff, 56, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, BRBE, 52, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, MTPMU, 48, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, TraceBuffer, 44, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, TraceFilt, 40, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, DoubleLock, 36, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, PMSVer, 32, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, CTX_CMPs, 28, 4)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, HPMN0, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, HPMN0)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, ExtTrcBuff, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, ExtTrcBuff)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, BRBE, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, BRBE)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, MTPMU, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, MTPMU)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, TraceBuffer, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, TraceBuffer)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, TraceFilt, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, TraceFilt)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, DoubleLock, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, DoubleLock)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, PMSVer, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+        IDREG_FIELD_ARCH_VAL(6)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, PMSVer)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, CTX_CMPs, 28, 4)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, CTX_CMPs)
     IDREG_FIELD(ID_AA64DFR0_EL1, WRPs, 20, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, PMSS, 16, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, BRPs, 12, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, PMUVer, 8, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, TraceVer, 4, 4)
-    IDREG_FIELD(ID_AA64DFR0_EL1, DebugVer, 0, 4)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, PMSS, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, PMSS)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, BRPs, 12, 4)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, BRPs)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, PMUVer, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+        IDREG_FIELD_ARCH_VAL(6)
+        IDREG_FIELD_ARCH_VAL(7)
+        IDREG_FIELD_ARCH_VAL(8)
+        IDREG_FIELD_ARCH_VAL(9)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, PMUVer)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, TraceVer, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, TraceVer)
+    IDREG_FIELD_START(ID_AA64DFR0_EL1, DebugVer, 0, 4)
+        IDREG_FIELD_ARCH_VAL(6)
+        IDREG_FIELD_ARCH_VAL(7)
+        IDREG_FIELD_ARCH_VAL(8)
+        IDREG_FIELD_ARCH_VAL(9)
+        IDREG_FIELD_ARCH_VAL(10)
+        IDREG_FIELD_ARCH_VAL(11)
+    IDREG_FIELD_END(ID_AA64DFR0_EL1, DebugVer)
 IDREG_END(ID_AA64DFR0_EL1)
 
 IDREG_START(ID_AA64DFR1_EL1)
     IDREG_FIELD(ID_AA64DFR1_EL1, ABL_CMPs, 56, 8)
-    IDREG_FIELD(ID_AA64DFR1_EL1, DPFZS, 52, 4)
-    IDREG_FIELD(ID_AA64DFR1_EL1, EBEP, 48, 4)
-    IDREG_FIELD(ID_AA64DFR1_EL1, ITE, 44, 4)
-    IDREG_FIELD(ID_AA64DFR1_EL1, ABLE, 40, 4)
-    IDREG_FIELD(ID_AA64DFR1_EL1, PMICNTR, 36, 4)
-    IDREG_FIELD(ID_AA64DFR1_EL1, SPMU, 32, 4)
-    IDREG_FIELD(ID_AA64DFR1_EL1, CTX_CMPs, 24, 8)
-    IDREG_FIELD(ID_AA64DFR1_EL1, WRPs, 16, 8)
-    IDREG_FIELD(ID_AA64DFR1_EL1, BRPs, 8, 8)
+    IDREG_FIELD_START(ID_AA64DFR1_EL1, DPFZS, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR1_EL1, DPFZS)
+    IDREG_FIELD_START(ID_AA64DFR1_EL1, EBEP, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR1_EL1, EBEP)
+    IDREG_FIELD_START(ID_AA64DFR1_EL1, ITE, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR1_EL1, ITE)
+    IDREG_FIELD_START(ID_AA64DFR1_EL1, ABLE, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR1_EL1, ABLE)
+    IDREG_FIELD_START(ID_AA64DFR1_EL1, PMICNTR, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR1_EL1, PMICNTR)
+    IDREG_FIELD_START(ID_AA64DFR1_EL1, SPMU, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64DFR1_EL1, SPMU)
+    IDREG_FIELD_START(ID_AA64DFR1_EL1, CTX_CMPs, 24, 8)
+        IDREG_FIELD_ARCH_VAL(0)
+    IDREG_FIELD_END(ID_AA64DFR1_EL1, CTX_CMPs)
+    IDREG_FIELD_START(ID_AA64DFR1_EL1, WRPs, 16, 8)
+        IDREG_FIELD_ARCH_VAL(0)
+    IDREG_FIELD_END(ID_AA64DFR1_EL1, WRPs)
+    IDREG_FIELD_START(ID_AA64DFR1_EL1, BRPs, 8, 8)
+        IDREG_FIELD_ARCH_VAL(0)
+    IDREG_FIELD_END(ID_AA64DFR1_EL1, BRPs)
     IDREG_FIELD(ID_AA64DFR1_EL1, SYSPMUID, 0, 8)
 IDREG_END(ID_AA64DFR1_EL1)
 
 IDREG_START(ID_AA64DFR2_EL1)
-    IDREG_FIELD(ID_AA64DFR2_EL1, TRBE_EXC, 24, 4)
-    IDREG_FIELD(ID_AA64DFR2_EL1, SPE_nVM, 20, 4)
-    IDREG_FIELD(ID_AA64DFR2_EL1, SPE_EXC, 16, 4)
-    IDREG_FIELD(ID_AA64DFR2_EL1, BWE, 4, 4)
-    IDREG_FIELD(ID_AA64DFR2_EL1, STEP, 0, 4)
+    IDREG_FIELD_START(ID_AA64DFR2_EL1, TRBE_EXC, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR2_EL1, TRBE_EXC)
+    IDREG_FIELD_START(ID_AA64DFR2_EL1, SPE_nVM, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR2_EL1, SPE_nVM)
+    IDREG_FIELD_START(ID_AA64DFR2_EL1, SPE_EXC, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR2_EL1, SPE_EXC)
+    IDREG_FIELD_START(ID_AA64DFR2_EL1, BWE, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64DFR2_EL1, BWE)
+    IDREG_FIELD_START(ID_AA64DFR2_EL1, STEP, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64DFR2_EL1, STEP)
 IDREG_END(ID_AA64DFR2_EL1)
 
 IDREG_START(ID_AA64FPFR0_EL1)
-    IDREG_FIELD(ID_AA64FPFR0_EL1, F8CVT, 31, 1)
-    IDREG_FIELD(ID_AA64FPFR0_EL1, F8FMA, 30, 1)
-    IDREG_FIELD(ID_AA64FPFR0_EL1, F8DP4, 29, 1)
-    IDREG_FIELD(ID_AA64FPFR0_EL1, F8DP2, 28, 1)
-    IDREG_FIELD(ID_AA64FPFR0_EL1, F8MM8, 27, 1)
-    IDREG_FIELD(ID_AA64FPFR0_EL1, F8MM4, 26, 1)
-    IDREG_FIELD(ID_AA64FPFR0_EL1, F16MM2, 15, 1)
-    IDREG_FIELD(ID_AA64FPFR0_EL1, F8E4M3, 1, 1)
-    IDREG_FIELD(ID_AA64FPFR0_EL1, F8E5M2, 0, 1)
+    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8CVT, 31, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8CVT)
+    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8FMA, 30, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8FMA)
+    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8DP4, 29, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8DP4)
+    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8DP2, 28, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8DP2)
+    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8MM8, 27, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8MM8)
+    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8MM4, 26, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8MM4)
+    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F16MM2, 15, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F16MM2)
+    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8E4M3, 1, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8E4M3)
+    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8E5M2, 0, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8E5M2)
 IDREG_END(ID_AA64FPFR0_EL1)
 
 IDREG_START(ID_AA64ISAR0_EL1)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, RNDR, 60, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, TLB, 56, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, TS, 52, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, FHM, 48, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, DP, 44, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, SM4, 40, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, SM3, 36, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, SHA3, 32, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, RDM, 28, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, Atomic, 20, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, CRC32, 16, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, SHA2, 12, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, SHA1, 8, 4)
-    IDREG_FIELD(ID_AA64ISAR0_EL1, AES, 4, 4)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, RNDR, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, RNDR)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, TLB, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, TLB)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, TS, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, TS)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, FHM, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, FHM)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, DP, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, DP)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, SM4, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, SM4)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, SM3, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, SM3)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, SHA3, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, SHA3)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, RDM, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, RDM)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, Atomic, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, Atomic)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, CRC32, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, CRC32)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, SHA2, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, SHA2)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, SHA1, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, SHA1)
+    IDREG_FIELD_START(ID_AA64ISAR0_EL1, AES, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR0_EL1, AES)
 IDREG_END(ID_AA64ISAR0_EL1)
 
 IDREG_START(ID_AA64ISAR1_EL1)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, LS64, 60, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, XS, 56, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, I8MM, 52, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, DGH, 48, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, BF16, 44, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, SPECRES, 40, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, SB, 36, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, FRINTTS, 32, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, GPI, 28, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, GPA, 24, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, LRCPC, 20, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, FCMA, 16, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, JSCVT, 12, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, API, 8, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, APA, 4, 4)
-    IDREG_FIELD(ID_AA64ISAR1_EL1, DPB, 0, 4)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, LS64, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, LS64)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, XS, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, XS)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, I8MM, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, I8MM)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, DGH, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, DGH)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, BF16, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, BF16)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, SPECRES, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, SPECRES)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, SB, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, SB)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, FRINTTS, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, FRINTTS)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, GPI, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, GPI)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, GPA, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, GPA)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, LRCPC, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, LRCPC)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, FCMA, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, FCMA)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, JSCVT, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, JSCVT)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, API, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+        IDREG_FIELD_ARCH_VAL(6)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, API)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, APA, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+        IDREG_FIELD_ARCH_VAL(6)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, APA)
+    IDREG_FIELD_START(ID_AA64ISAR1_EL1, DPB, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR1_EL1, DPB)
 IDREG_END(ID_AA64ISAR1_EL1)
 
 IDREG_START(ID_AA64ISAR2_EL1)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, ATS1A, 60, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, LUT, 56, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, CSSC, 52, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, RPRFM, 48, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, PCDPHINT, 44, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, PRFMSLC, 40, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, SYSINSTR_128, 36, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, SYSREG_128, 32, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, CLRBHB, 28, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, PAC_frac, 24, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, BC, 20, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, MOPS, 16, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, APA3, 12, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, GPA3, 8, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, RPRES, 4, 4)
-    IDREG_FIELD(ID_AA64ISAR2_EL1, WFxT, 0, 4)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, ATS1A, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, ATS1A)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, LUT, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, LUT)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, CSSC, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, CSSC)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, RPRFM, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, RPRFM)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, PCDPHINT, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, PCDPHINT)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, PRFMSLC, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, PRFMSLC)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, SYSINSTR_128, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, SYSINSTR_128)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, SYSREG_128, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, SYSREG_128)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, CLRBHB, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, CLRBHB)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, PAC_frac, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, PAC_frac)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, BC, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, BC)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, MOPS, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, MOPS)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, APA3, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+        IDREG_FIELD_ARCH_VAL(6)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, APA3)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, GPA3, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, GPA3)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, RPRES, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, RPRES)
+    IDREG_FIELD_START(ID_AA64ISAR2_EL1, WFxT, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR2_EL1, WFxT)
 IDREG_END(ID_AA64ISAR2_EL1)
 
 IDREG_START(ID_AA64ISAR3_EL1)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, LSCP, 44, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, LSCSHINT, 40, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, MTETC, 36, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, PAC_frac2, 32, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, FPRCVT, 28, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, LSUI, 24, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, OCCMO, 20, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, LSFE, 16, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, PACM, 12, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, TLBIW, 8, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, FAMINMAX, 4, 4)
-    IDREG_FIELD(ID_AA64ISAR3_EL1, CPA, 0, 4)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, LSCP, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, LSCP)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, LSCSHINT, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, LSCSHINT)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, MTETC, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, MTETC)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, PAC_frac2, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, PAC_frac2)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, FPRCVT, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, FPRCVT)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, LSUI, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, LSUI)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, OCCMO, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, OCCMO)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, LSFE, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, LSFE)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, PACM, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, PACM)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, TLBIW, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, TLBIW)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, FAMINMAX, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, FAMINMAX)
+    IDREG_FIELD_START(ID_AA64ISAR3_EL1, CPA, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ISAR3_EL1, CPA)
 IDREG_END(ID_AA64ISAR3_EL1)
 
 IDREG_START(ID_AA64MMFR0_EL1)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, ECV, 60, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, FGT, 56, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, ExS, 44, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran4_2, 40, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran64_2, 36, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran16_2, 32, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran4, 28, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran64, 24, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran16, 20, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, BigEndEL0, 16, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, SNSMem, 12, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, BigEnd, 8, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, ASIDBits, 4, 4)
-    IDREG_FIELD(ID_AA64MMFR0_EL1, PARange, 0, 4)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, ECV, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, ECV)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, FGT, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, FGT)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, ExS, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, ExS)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran4_2, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran4_2)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran64_2, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran64_2)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran16_2, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran16_2)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran4, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran4)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran64, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran64)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran16, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran16)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, BigEndEL0, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, BigEndEL0)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, SNSMem, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, SNSMem)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, BigEnd, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, BigEnd)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, ASIDBits, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, ASIDBits)
+    IDREG_FIELD_START(ID_AA64MMFR0_EL1, PARange, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+    IDREG_FIELD_END(ID_AA64MMFR0_EL1, PARange)
 IDREG_END(ID_AA64MMFR0_EL1)
 
 IDREG_START(ID_AA64MMFR1_EL1)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, ECBHB, 60, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, CMOW, 56, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, TIDCP1, 52, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, nTLBPA, 48, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, AFP, 44, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, HCX, 40, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, ETS, 36, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, TWED, 32, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, XNX, 28, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, SpecSEI, 24, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, PAN, 20, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, LO, 16, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, HPDS, 12, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, VH, 8, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, VMIDBits, 4, 4)
-    IDREG_FIELD(ID_AA64MMFR1_EL1, HAFDBS, 0, 4)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, ECBHB, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, ECBHB)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, CMOW, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, CMOW)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, TIDCP1, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, TIDCP1)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, nTLBPA, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, nTLBPA)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, AFP, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, AFP)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, HCX, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, HCX)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, ETS, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, ETS)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, TWED, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, TWED)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, XNX, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, XNX)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, SpecSEI, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, SpecSEI)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, PAN, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, PAN)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, LO, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, LO)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, HPDS, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, HPDS)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, VH, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, VH)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, VMIDBits, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, VMIDBits)
+    IDREG_FIELD_START(ID_AA64MMFR1_EL1, HAFDBS, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+    IDREG_FIELD_END(ID_AA64MMFR1_EL1, HAFDBS)
 IDREG_END(ID_AA64MMFR1_EL1)
 
 IDREG_START(ID_AA64MMFR2_EL1)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, E0PD, 60, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, EVT, 56, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, BBM, 52, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, TTL, 48, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, FWB, 40, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, IDS, 36, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, AT, 32, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, ST, 28, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, NV, 24, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, CCIDX, 20, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, VARange, 16, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, IESB, 12, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, LSM, 8, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, UAO, 4, 4)
-    IDREG_FIELD(ID_AA64MMFR2_EL1, CnP, 0, 4)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, E0PD, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, E0PD)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, EVT, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, EVT)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, BBM, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, BBM)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, TTL, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, TTL)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, FWB, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, FWB)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, IDS, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, IDS)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, AT, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, AT)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, ST, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, ST)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, NV, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, NV)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, CCIDX, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, CCIDX)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, VARange, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, VARange)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, IESB, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, IESB)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, LSM, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, LSM)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, UAO, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, UAO)
+    IDREG_FIELD_START(ID_AA64MMFR2_EL1, CnP, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR2_EL1, CnP)
 IDREG_END(ID_AA64MMFR2_EL1)
 
 IDREG_START(ID_AA64MMFR3_EL1)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, Spec_FPACC, 60, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, ADERR, 56, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, SDERR, 52, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, ANERR, 44, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, SNERR, 40, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, D128_2, 36, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, D128, 32, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, MEC, 28, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, AIE, 24, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, S2POE, 20, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, S1POE, 16, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, S2PIE, 12, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, S1PIE, 8, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, SCTLRX, 4, 4)
-    IDREG_FIELD(ID_AA64MMFR3_EL1, TCRX, 0, 4)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, Spec_FPACC, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, Spec_FPACC)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, ADERR, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, ADERR)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, SDERR, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, SDERR)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, ANERR, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, ANERR)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, SNERR, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, SNERR)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, D128_2, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, D128_2)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, D128, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, D128)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, MEC, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, MEC)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, AIE, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, AIE)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, S2POE, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, S2POE)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, S1POE, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, S1POE)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, S2PIE, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, S2PIE)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, S1PIE, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, S1PIE)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, SCTLRX, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, SCTLRX)
+    IDREG_FIELD_START(ID_AA64MMFR3_EL1, TCRX, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR3_EL1, TCRX)
 IDREG_END(ID_AA64MMFR3_EL1)
 
 IDREG_START(ID_AA64MMFR4_EL1)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, MTEFGT, 60, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, SCRX, 56, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, TEV, 52, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, TPS, 48, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, SRMASK, 44, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, TLBID, 40, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, E3DSE, 36, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, EAESR, 32, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, RMEGDI, 28, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, E2H0, 24, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, NV_frac, 20, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, FGWTE3, 16, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, HACDBS, 12, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, ASID2, 8, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, EIESB, 4, 4)
-    IDREG_FIELD(ID_AA64MMFR4_EL1, PoPS, 0, 4)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, MTEFGT, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, MTEFGT)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, SCRX, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, SCRX)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, TEV, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, TEV)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, TPS, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, TPS)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, SRMASK, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, SRMASK)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, TLBID, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, TLBID)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, E3DSE, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, E3DSE)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, EAESR, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, EAESR)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, RMEGDI, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, RMEGDI)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, E2H0, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(14)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, E2H0)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, NV_frac, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, NV_frac)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, FGWTE3, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, FGWTE3)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, HACDBS, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, HACDBS)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, ASID2, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, ASID2)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, EIESB, 4, 4)
+        IDREG_FIELD_ARCH_VAL(15)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, EIESB)
+    IDREG_FIELD_START(ID_AA64MMFR4_EL1, PoPS, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64MMFR4_EL1, PoPS)
 IDREG_END(ID_AA64MMFR4_EL1)
 
 IDREG_START(ID_AA64PFR0_EL1)
-    IDREG_FIELD(ID_AA64PFR0_EL1, CSV3, 60, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, CSV2, 56, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, RME, 52, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, DIT, 48, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, AMU, 44, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, MPAM, 40, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, SEL2, 36, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, SVE, 32, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, RAS, 28, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, GIC, 24, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, AdvSIMD, 20, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, FP, 16, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, EL3, 12, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, EL2, 8, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, EL1, 4, 4)
-    IDREG_FIELD(ID_AA64PFR0_EL1, EL0, 0, 4)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, CSV3, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, CSV3)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, CSV2, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, CSV2)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, RME, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, RME)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, DIT, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, DIT)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, AMU, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, AMU)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, MPAM, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, MPAM)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, SEL2, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, SEL2)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, SVE, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, SVE)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, RAS, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, RAS)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, GIC, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, GIC)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, AdvSIMD, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, AdvSIMD)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, FP, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, FP)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, EL3, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, EL3)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, EL2, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, EL2)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, EL1, 4, 4)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, EL1)
+    IDREG_FIELD_START(ID_AA64PFR0_EL1, EL0, 0, 4)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR0_EL1, EL0)
 IDREG_END(ID_AA64PFR0_EL1)
 
 IDREG_START(ID_AA64PFR1_EL1)
-    IDREG_FIELD(ID_AA64PFR1_EL1, PFAR, 60, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, DF2, 56, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, MTEX, 52, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, THE, 48, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, GCS, 44, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, MTE_frac, 40, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, NMI, 36, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, CSV2_frac, 32, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, RNDR_trap, 28, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, SME, 24, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, MPAM_frac, 16, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, RAS_frac, 12, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, MTE, 8, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, SSBS, 4, 4)
-    IDREG_FIELD(ID_AA64PFR1_EL1, BT, 0, 4)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, PFAR, 60, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, PFAR)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, DF2, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, DF2)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, MTEX, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, MTEX)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, THE, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, THE)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, GCS, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, GCS)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, MTE_frac, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, MTE_frac)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, NMI, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, NMI)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, CSV2_frac, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, CSV2_frac)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, RNDR_trap, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, RNDR_trap)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, SME, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, SME)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, MPAM_frac, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, MPAM_frac)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, RAS_frac, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, RAS_frac)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, MTE, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, MTE)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, SSBS, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, SSBS)
+    IDREG_FIELD_START(ID_AA64PFR1_EL1, BT, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR1_EL1, BT)
 IDREG_END(ID_AA64PFR1_EL1)
 
 IDREG_START(ID_AA64PFR2_EL1)
-    IDREG_FIELD(ID_AA64PFR2_EL1, VMTETCL, 44, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, VMTETC, 40, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, VMTE, 36, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, FPMR, 32, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, MPAM2, 28, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, FGDT, 24, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, MTEEIRG, 20, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, UINJ, 16, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, GCIE, 12, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, MTEFAR, 8, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, MTESTOREONLY, 4, 4)
-    IDREG_FIELD(ID_AA64PFR2_EL1, MTEPERM, 0, 4)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, VMTETCL, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, VMTETCL)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, VMTETC, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, VMTETC)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, VMTE, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, VMTE)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, FPMR, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, FPMR)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, MPAM2, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, MPAM2)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, FGDT, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, FGDT)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, MTEEIRG, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, MTEEIRG)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, UINJ, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, UINJ)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, GCIE, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, GCIE)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, MTEFAR, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, MTEFAR)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, MTESTOREONLY, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, MTESTOREONLY)
+    IDREG_FIELD_START(ID_AA64PFR2_EL1, MTEPERM, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64PFR2_EL1, MTEPERM)
 IDREG_END(ID_AA64PFR2_EL1)
 
 IDREG_START(ID_AA64SMFR0_EL1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, FA64, 63, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, LUT6, 61, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, LUTv2, 60, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, SMEver, 56, 4)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, I16I64, 52, 4)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, F64F64, 48, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, I16I32, 44, 4)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, B16B16, 43, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, F16F16, 42, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, F8F16, 41, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, F8F32, 40, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, I8I32, 36, 4)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, F16F32, 35, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, B16F32, 34, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, BI32I32, 33, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, F32F32, 32, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, SF8FMA, 30, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, SF8DP4, 29, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, SF8DP2, 28, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, SBitPerm, 25, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, AES, 24, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, SFEXPA, 23, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, STMOP, 16, 1)
-    IDREG_FIELD(ID_AA64SMFR0_EL1, SMOP4, 0, 1)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, FA64, 63, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, FA64)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, LUT6, 61, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, LUT6)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, LUTv2, 60, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, LUTv2)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SMEver, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SMEver)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, I16I64, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, I16I64)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F64F64, 48, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F64F64)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, I16I32, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(5)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, I16I32)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, B16B16, 43, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, B16B16)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F16F16, 42, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F16F16)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F8F16, 41, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F8F16)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F8F32, 40, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F8F32)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, I8I32, 36, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, I8I32)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F16F32, 35, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F16F32)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, B16F32, 34, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, B16F32)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, BI32I32, 33, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, BI32I32)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F32F32, 32, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F32F32)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SF8FMA, 30, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SF8FMA)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SF8DP4, 29, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SF8DP4)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SF8DP2, 28, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SF8DP2)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SBitPerm, 25, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SBitPerm)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, AES, 24, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, AES)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SFEXPA, 23, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SFEXPA)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, STMOP, 16, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, STMOP)
+    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SMOP4, 0, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SMOP4)
 IDREG_END(ID_AA64SMFR0_EL1)
 
 IDREG_START(ID_AA64ZFR0_EL1)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, F64MM, 56, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, F32MM, 52, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, F16MM, 48, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, I8MM, 44, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, SM4, 40, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, SHA3, 32, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, B16B16, 24, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, BF16, 20, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, BitPerm, 16, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, EltPerm, 12, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, AES, 4, 4)
-    IDREG_FIELD(ID_AA64ZFR0_EL1, SVEver, 0, 4)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, F64MM, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, F64MM)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, F32MM, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, F32MM)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, F16MM, 48, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, F16MM)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, I8MM, 44, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, I8MM)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, SM4, 40, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, SM4)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, SHA3, 32, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, SHA3)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, B16B16, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, B16B16)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, BF16, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, BF16)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, BitPerm, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, BitPerm)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, EltPerm, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, EltPerm)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, AES, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, AES)
+    IDREG_FIELD_START(ID_AA64ZFR0_EL1, SVEver, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+    IDREG_FIELD_END(ID_AA64ZFR0_EL1, SVEver)
 IDREG_END(ID_AA64ZFR0_EL1)
 
 IDREG_START(ID_AFR0_EL1)
 IDREG_END(ID_AFR0_EL1)
 
 IDREG_START(ID_DFR0_EL1)
-    IDREG_FIELD(ID_DFR0_EL1, TraceFilt, 28, 4)
-    IDREG_FIELD(ID_DFR0_EL1, PerfMon, 24, 4)
-    IDREG_FIELD(ID_DFR0_EL1, MProfDbg, 20, 4)
-    IDREG_FIELD(ID_DFR0_EL1, MMapTrc, 16, 4)
-    IDREG_FIELD(ID_DFR0_EL1, CopTrc, 12, 4)
-    IDREG_FIELD(ID_DFR0_EL1, MMapDbg, 8, 4)
+    IDREG_FIELD_START(ID_DFR0_EL1, TraceFilt, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_DFR0_EL1, TraceFilt)
+    IDREG_FIELD_START(ID_DFR0_EL1, PerfMon, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+        IDREG_FIELD_ARCH_VAL(6)
+        IDREG_FIELD_ARCH_VAL(7)
+        IDREG_FIELD_ARCH_VAL(8)
+        IDREG_FIELD_ARCH_VAL(9)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_DFR0_EL1, PerfMon)
+    IDREG_FIELD_START(ID_DFR0_EL1, MProfDbg, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_DFR0_EL1, MProfDbg)
+    IDREG_FIELD_START(ID_DFR0_EL1, MMapTrc, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_DFR0_EL1, MMapTrc)
+    IDREG_FIELD_START(ID_DFR0_EL1, CopTrc, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_DFR0_EL1, CopTrc)
+    IDREG_FIELD_START(ID_DFR0_EL1, MMapDbg, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+    IDREG_FIELD_END(ID_DFR0_EL1, MMapDbg)
     IDREG_FIELD(ID_DFR0_EL1, CopSDbg, 4, 4)
-    IDREG_FIELD(ID_DFR0_EL1, CopDbg, 0, 4)
+    IDREG_FIELD_START(ID_DFR0_EL1, CopDbg, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+        IDREG_FIELD_ARCH_VAL(6)
+        IDREG_FIELD_ARCH_VAL(7)
+        IDREG_FIELD_ARCH_VAL(8)
+        IDREG_FIELD_ARCH_VAL(9)
+        IDREG_FIELD_ARCH_VAL(10)
+        IDREG_FIELD_ARCH_VAL(11)
+    IDREG_FIELD_END(ID_DFR0_EL1, CopDbg)
 IDREG_END(ID_DFR0_EL1)
 
 IDREG_START(ID_DFR1_EL1)
-    IDREG_FIELD(ID_DFR1_EL1, HPMN0, 4, 4)
-    IDREG_FIELD(ID_DFR1_EL1, MTPMU, 0, 4)
+    IDREG_FIELD_START(ID_DFR1_EL1, HPMN0, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_DFR1_EL1, HPMN0)
+    IDREG_FIELD_START(ID_DFR1_EL1, MTPMU, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_DFR1_EL1, MTPMU)
 IDREG_END(ID_DFR1_EL1)
 
 IDREG_START(ID_ISAR0_EL1)
-    IDREG_FIELD(ID_ISAR0_EL1, Divide, 24, 4)
-    IDREG_FIELD(ID_ISAR0_EL1, Debug, 20, 4)
-    IDREG_FIELD(ID_ISAR0_EL1, Coproc, 16, 4)
-    IDREG_FIELD(ID_ISAR0_EL1, CmpBranch, 12, 4)
-    IDREG_FIELD(ID_ISAR0_EL1, BitField, 8, 4)
-    IDREG_FIELD(ID_ISAR0_EL1, BitCount, 4, 4)
-    IDREG_FIELD(ID_ISAR0_EL1, Swap, 0, 4)
+    IDREG_FIELD_START(ID_ISAR0_EL1, Divide, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR0_EL1, Divide)
+    IDREG_FIELD_START(ID_ISAR0_EL1, Debug, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR0_EL1, Debug)
+    IDREG_FIELD_START(ID_ISAR0_EL1, Coproc, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+    IDREG_FIELD_END(ID_ISAR0_EL1, Coproc)
+    IDREG_FIELD_START(ID_ISAR0_EL1, CmpBranch, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR0_EL1, CmpBranch)
+    IDREG_FIELD_START(ID_ISAR0_EL1, BitField, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR0_EL1, BitField)
+    IDREG_FIELD_START(ID_ISAR0_EL1, BitCount, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR0_EL1, BitCount)
+    IDREG_FIELD_START(ID_ISAR0_EL1, Swap, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR0_EL1, Swap)
 IDREG_END(ID_ISAR0_EL1)
 
 IDREG_START(ID_ISAR1_EL1)
-    IDREG_FIELD(ID_ISAR1_EL1, Jazelle, 28, 4)
-    IDREG_FIELD(ID_ISAR1_EL1, Interwork, 24, 4)
-    IDREG_FIELD(ID_ISAR1_EL1, Immediate, 20, 4)
-    IDREG_FIELD(ID_ISAR1_EL1, IfThen, 16, 4)
-    IDREG_FIELD(ID_ISAR1_EL1, Extend, 12, 4)
-    IDREG_FIELD(ID_ISAR1_EL1, Except_AR, 8, 4)
-    IDREG_FIELD(ID_ISAR1_EL1, Except, 4, 4)
-    IDREG_FIELD(ID_ISAR1_EL1, Endian, 0, 4)
+    IDREG_FIELD_START(ID_ISAR1_EL1, Jazelle, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR1_EL1, Jazelle)
+    IDREG_FIELD_START(ID_ISAR1_EL1, Interwork, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_ISAR1_EL1, Interwork)
+    IDREG_FIELD_START(ID_ISAR1_EL1, Immediate, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR1_EL1, Immediate)
+    IDREG_FIELD_START(ID_ISAR1_EL1, IfThen, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR1_EL1, IfThen)
+    IDREG_FIELD_START(ID_ISAR1_EL1, Extend, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR1_EL1, Extend)
+    IDREG_FIELD_START(ID_ISAR1_EL1, Except_AR, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR1_EL1, Except_AR)
+    IDREG_FIELD_START(ID_ISAR1_EL1, Except, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR1_EL1, Except)
+    IDREG_FIELD_START(ID_ISAR1_EL1, Endian, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR1_EL1, Endian)
 IDREG_END(ID_ISAR1_EL1)
 
 IDREG_START(ID_ISAR2_EL1)
-    IDREG_FIELD(ID_ISAR2_EL1, Reversal, 28, 4)
-    IDREG_FIELD(ID_ISAR2_EL1, PSR_AR, 24, 4)
-    IDREG_FIELD(ID_ISAR2_EL1, MultU, 20, 4)
-    IDREG_FIELD(ID_ISAR2_EL1, MultS, 16, 4)
-    IDREG_FIELD(ID_ISAR2_EL1, Mult, 12, 4)
-    IDREG_FIELD(ID_ISAR2_EL1, MultiAccessInt, 8, 4)
-    IDREG_FIELD(ID_ISAR2_EL1, MemHint, 4, 4)
-    IDREG_FIELD(ID_ISAR2_EL1, LoadStore, 0, 4)
+    IDREG_FIELD_START(ID_ISAR2_EL1, Reversal, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR2_EL1, Reversal)
+    IDREG_FIELD_START(ID_ISAR2_EL1, PSR_AR, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR2_EL1, PSR_AR)
+    IDREG_FIELD_START(ID_ISAR2_EL1, MultU, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR2_EL1, MultU)
+    IDREG_FIELD_START(ID_ISAR2_EL1, MultS, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_ISAR2_EL1, MultS)
+    IDREG_FIELD_START(ID_ISAR2_EL1, Mult, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR2_EL1, Mult)
+    IDREG_FIELD_START(ID_ISAR2_EL1, MultiAccessInt, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR2_EL1, MultiAccessInt)
+    IDREG_FIELD_START(ID_ISAR2_EL1, MemHint, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+    IDREG_FIELD_END(ID_ISAR2_EL1, MemHint)
+    IDREG_FIELD_START(ID_ISAR2_EL1, LoadStore, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR2_EL1, LoadStore)
 IDREG_END(ID_ISAR2_EL1)
 
 IDREG_START(ID_ISAR3_EL1)
-    IDREG_FIELD(ID_ISAR3_EL1, T32EE, 28, 4)
-    IDREG_FIELD(ID_ISAR3_EL1, TrueNOP, 24, 4)
-    IDREG_FIELD(ID_ISAR3_EL1, T32Copy, 20, 4)
-    IDREG_FIELD(ID_ISAR3_EL1, TabBranch, 16, 4)
-    IDREG_FIELD(ID_ISAR3_EL1, SynchPrim, 12, 4)
-    IDREG_FIELD(ID_ISAR3_EL1, SVC, 8, 4)
-    IDREG_FIELD(ID_ISAR3_EL1, SIMD, 4, 4)
-    IDREG_FIELD(ID_ISAR3_EL1, Saturate, 0, 4)
+    IDREG_FIELD_START(ID_ISAR3_EL1, T32EE, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR3_EL1, T32EE)
+    IDREG_FIELD_START(ID_ISAR3_EL1, TrueNOP, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR3_EL1, TrueNOP)
+    IDREG_FIELD_START(ID_ISAR3_EL1, T32Copy, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR3_EL1, T32Copy)
+    IDREG_FIELD_START(ID_ISAR3_EL1, TabBranch, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR3_EL1, TabBranch)
+    IDREG_FIELD_START(ID_ISAR3_EL1, SynchPrim, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR3_EL1, SynchPrim)
+    IDREG_FIELD_START(ID_ISAR3_EL1, SVC, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR3_EL1, SVC)
+    IDREG_FIELD_START(ID_ISAR3_EL1, SIMD, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_ISAR3_EL1, SIMD)
+    IDREG_FIELD_START(ID_ISAR3_EL1, Saturate, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR3_EL1, Saturate)
 IDREG_END(ID_ISAR3_EL1)
 
 IDREG_START(ID_ISAR4_EL1)
-    IDREG_FIELD(ID_ISAR4_EL1, SWP_frac, 28, 4)
-    IDREG_FIELD(ID_ISAR4_EL1, PSR_M, 24, 4)
-    IDREG_FIELD(ID_ISAR4_EL1, SynchPrim_frac, 20, 4)
-    IDREG_FIELD(ID_ISAR4_EL1, Barrier, 16, 4)
-    IDREG_FIELD(ID_ISAR4_EL1, SMC, 12, 4)
-    IDREG_FIELD(ID_ISAR4_EL1, Writeback, 8, 4)
-    IDREG_FIELD(ID_ISAR4_EL1, WithShifts, 4, 4)
-    IDREG_FIELD(ID_ISAR4_EL1, Unpriv, 0, 4)
+    IDREG_FIELD_START(ID_ISAR4_EL1, SWP_frac, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR4_EL1, SWP_frac)
+    IDREG_FIELD_START(ID_ISAR4_EL1, PSR_M, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR4_EL1, PSR_M)
+    IDREG_FIELD_START(ID_ISAR4_EL1, SynchPrim_frac, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_ISAR4_EL1, SynchPrim_frac)
+    IDREG_FIELD_START(ID_ISAR4_EL1, Barrier, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR4_EL1, Barrier)
+    IDREG_FIELD_START(ID_ISAR4_EL1, SMC, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR4_EL1, SMC)
+    IDREG_FIELD_START(ID_ISAR4_EL1, Writeback, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR4_EL1, Writeback)
+    IDREG_FIELD_START(ID_ISAR4_EL1, WithShifts, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+    IDREG_FIELD_END(ID_ISAR4_EL1, WithShifts)
+    IDREG_FIELD_START(ID_ISAR4_EL1, Unpriv, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR4_EL1, Unpriv)
 IDREG_END(ID_ISAR4_EL1)
 
 IDREG_START(ID_ISAR5_EL1)
-    IDREG_FIELD(ID_ISAR5_EL1, VCMA, 28, 4)
-    IDREG_FIELD(ID_ISAR5_EL1, RDM, 24, 4)
-    IDREG_FIELD(ID_ISAR5_EL1, CRC32, 16, 4)
-    IDREG_FIELD(ID_ISAR5_EL1, SHA2, 12, 4)
-    IDREG_FIELD(ID_ISAR5_EL1, SHA1, 8, 4)
-    IDREG_FIELD(ID_ISAR5_EL1, AES, 4, 4)
-    IDREG_FIELD(ID_ISAR5_EL1, SEVL, 0, 4)
+    IDREG_FIELD_START(ID_ISAR5_EL1, VCMA, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR5_EL1, VCMA)
+    IDREG_FIELD_START(ID_ISAR5_EL1, RDM, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR5_EL1, RDM)
+    IDREG_FIELD_START(ID_ISAR5_EL1, CRC32, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR5_EL1, CRC32)
+    IDREG_FIELD_START(ID_ISAR5_EL1, SHA2, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR5_EL1, SHA2)
+    IDREG_FIELD_START(ID_ISAR5_EL1, SHA1, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR5_EL1, SHA1)
+    IDREG_FIELD_START(ID_ISAR5_EL1, AES, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR5_EL1, AES)
+    IDREG_FIELD_START(ID_ISAR5_EL1, SEVL, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR5_EL1, SEVL)
 IDREG_END(ID_ISAR5_EL1)
 
 IDREG_START(ID_ISAR6_EL1)
-    IDREG_FIELD(ID_ISAR6_EL1, CLRBHB, 28, 4)
-    IDREG_FIELD(ID_ISAR6_EL1, I8MM, 24, 4)
-    IDREG_FIELD(ID_ISAR6_EL1, BF16, 20, 4)
-    IDREG_FIELD(ID_ISAR6_EL1, SPECRES, 16, 4)
-    IDREG_FIELD(ID_ISAR6_EL1, SB, 12, 4)
-    IDREG_FIELD(ID_ISAR6_EL1, FHM, 8, 4)
-    IDREG_FIELD(ID_ISAR6_EL1, DP, 4, 4)
-    IDREG_FIELD(ID_ISAR6_EL1, JSCVT, 0, 4)
+    IDREG_FIELD_START(ID_ISAR6_EL1, CLRBHB, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR6_EL1, CLRBHB)
+    IDREG_FIELD_START(ID_ISAR6_EL1, I8MM, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR6_EL1, I8MM)
+    IDREG_FIELD_START(ID_ISAR6_EL1, BF16, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR6_EL1, BF16)
+    IDREG_FIELD_START(ID_ISAR6_EL1, SPECRES, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_ISAR6_EL1, SPECRES)
+    IDREG_FIELD_START(ID_ISAR6_EL1, SB, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR6_EL1, SB)
+    IDREG_FIELD_START(ID_ISAR6_EL1, FHM, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR6_EL1, FHM)
+    IDREG_FIELD_START(ID_ISAR6_EL1, DP, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR6_EL1, DP)
+    IDREG_FIELD_START(ID_ISAR6_EL1, JSCVT, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_ISAR6_EL1, JSCVT)
 IDREG_END(ID_ISAR6_EL1)
 
 IDREG_START(ID_MMFR0_EL1)
-    IDREG_FIELD(ID_MMFR0_EL1, InnerShr, 28, 4)
-    IDREG_FIELD(ID_MMFR0_EL1, FCSE, 24, 4)
-    IDREG_FIELD(ID_MMFR0_EL1, AuxReg, 20, 4)
-    IDREG_FIELD(ID_MMFR0_EL1, TCM, 16, 4)
-    IDREG_FIELD(ID_MMFR0_EL1, ShareLvl, 12, 4)
-    IDREG_FIELD(ID_MMFR0_EL1, OuterShr, 8, 4)
-    IDREG_FIELD(ID_MMFR0_EL1, PMSA, 4, 4)
-    IDREG_FIELD(ID_MMFR0_EL1, VMSA, 0, 4)
+    IDREG_FIELD_START(ID_MMFR0_EL1, InnerShr, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_MMFR0_EL1, InnerShr)
+    IDREG_FIELD_START(ID_MMFR0_EL1, FCSE, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR0_EL1, FCSE)
+    IDREG_FIELD_START(ID_MMFR0_EL1, AuxReg, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR0_EL1, AuxReg)
+    IDREG_FIELD_START(ID_MMFR0_EL1, TCM, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_MMFR0_EL1, TCM)
+    IDREG_FIELD_START(ID_MMFR0_EL1, ShareLvl, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR0_EL1, ShareLvl)
+    IDREG_FIELD_START(ID_MMFR0_EL1, OuterShr, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_MMFR0_EL1, OuterShr)
+    IDREG_FIELD_START(ID_MMFR0_EL1, PMSA, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_MMFR0_EL1, PMSA)
+    IDREG_FIELD_START(ID_MMFR0_EL1, VMSA, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+    IDREG_FIELD_END(ID_MMFR0_EL1, VMSA)
 IDREG_END(ID_MMFR0_EL1)
 
 IDREG_START(ID_MMFR1_EL1)
-    IDREG_FIELD(ID_MMFR1_EL1, BPred, 28, 4)
-    IDREG_FIELD(ID_MMFR1_EL1, L1TstCln, 24, 4)
-    IDREG_FIELD(ID_MMFR1_EL1, L1Uni, 20, 4)
-    IDREG_FIELD(ID_MMFR1_EL1, L1Hvd, 16, 4)
-    IDREG_FIELD(ID_MMFR1_EL1, L1UniSW, 12, 4)
-    IDREG_FIELD(ID_MMFR1_EL1, L1HvdSW, 8, 4)
-    IDREG_FIELD(ID_MMFR1_EL1, L1UniVA, 4, 4)
-    IDREG_FIELD(ID_MMFR1_EL1, L1HvdVA, 0, 4)
+    IDREG_FIELD_START(ID_MMFR1_EL1, BPred, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+    IDREG_FIELD_END(ID_MMFR1_EL1, BPred)
+    IDREG_FIELD_START(ID_MMFR1_EL1, L1TstCln, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR1_EL1, L1TstCln)
+    IDREG_FIELD_START(ID_MMFR1_EL1, L1Uni, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR1_EL1, L1Uni)
+    IDREG_FIELD_START(ID_MMFR1_EL1, L1Hvd, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_MMFR1_EL1, L1Hvd)
+    IDREG_FIELD_START(ID_MMFR1_EL1, L1UniSW, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_MMFR1_EL1, L1UniSW)
+    IDREG_FIELD_START(ID_MMFR1_EL1, L1HvdSW, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_MMFR1_EL1, L1HvdSW)
+    IDREG_FIELD_START(ID_MMFR1_EL1, L1UniVA, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR1_EL1, L1UniVA)
+    IDREG_FIELD_START(ID_MMFR1_EL1, L1HvdVA, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR1_EL1, L1HvdVA)
 IDREG_END(ID_MMFR1_EL1)
 
 IDREG_START(ID_MMFR2_EL1)
-    IDREG_FIELD(ID_MMFR2_EL1, HWAccFlg, 28, 4)
-    IDREG_FIELD(ID_MMFR2_EL1, WFIStall, 24, 4)
-    IDREG_FIELD(ID_MMFR2_EL1, MemBarr, 20, 4)
-    IDREG_FIELD(ID_MMFR2_EL1, UniTLB, 16, 4)
+    IDREG_FIELD_START(ID_MMFR2_EL1, HWAccFlg, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR2_EL1, HWAccFlg)
+    IDREG_FIELD_START(ID_MMFR2_EL1, WFIStall, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR2_EL1, WFIStall)
+    IDREG_FIELD_START(ID_MMFR2_EL1, MemBarr, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR2_EL1, MemBarr)
+    IDREG_FIELD_START(ID_MMFR2_EL1, UniTLB, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+        IDREG_FIELD_ARCH_VAL(6)
+    IDREG_FIELD_END(ID_MMFR2_EL1, UniTLB)
     IDREG_FIELD(ID_MMFR2_EL1, HvdTLB, 12, 4)
-    IDREG_FIELD(ID_MMFR2_EL1, L1HvdRng, 8, 4)
-    IDREG_FIELD(ID_MMFR2_EL1, L1HvdBG, 4, 4)
-    IDREG_FIELD(ID_MMFR2_EL1, L1HvdFG, 0, 4)
+    IDREG_FIELD_START(ID_MMFR2_EL1, L1HvdRng, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR2_EL1, L1HvdRng)
+    IDREG_FIELD_START(ID_MMFR2_EL1, L1HvdBG, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR2_EL1, L1HvdBG)
+    IDREG_FIELD_START(ID_MMFR2_EL1, L1HvdFG, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR2_EL1, L1HvdFG)
 IDREG_END(ID_MMFR2_EL1)
 
 IDREG_START(ID_MMFR3_EL1)
-    IDREG_FIELD(ID_MMFR3_EL1, Supersec, 28, 4)
-    IDREG_FIELD(ID_MMFR3_EL1, CMemSz, 24, 4)
-    IDREG_FIELD(ID_MMFR3_EL1, CohWalk, 20, 4)
-    IDREG_FIELD(ID_MMFR3_EL1, PAN, 16, 4)
-    IDREG_FIELD(ID_MMFR3_EL1, MaintBcst, 12, 4)
-    IDREG_FIELD(ID_MMFR3_EL1, BPMaint, 8, 4)
-    IDREG_FIELD(ID_MMFR3_EL1, CMaintSW, 4, 4)
-    IDREG_FIELD(ID_MMFR3_EL1, CMaintVA, 0, 4)
+    IDREG_FIELD_START(ID_MMFR3_EL1, Supersec, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(ID_MMFR3_EL1, Supersec)
+    IDREG_FIELD_START(ID_MMFR3_EL1, CMemSz, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR3_EL1, CMemSz)
+    IDREG_FIELD_START(ID_MMFR3_EL1, CohWalk, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR3_EL1, CohWalk)
+    IDREG_FIELD_START(ID_MMFR3_EL1, PAN, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR3_EL1, PAN)
+    IDREG_FIELD_START(ID_MMFR3_EL1, MaintBcst, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR3_EL1, MaintBcst)
+    IDREG_FIELD_START(ID_MMFR3_EL1, BPMaint, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR3_EL1, BPMaint)
+    IDREG_FIELD_START(ID_MMFR3_EL1, CMaintSW, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR3_EL1, CMaintSW)
+    IDREG_FIELD_START(ID_MMFR3_EL1, CMaintVA, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR3_EL1, CMaintVA)
 IDREG_END(ID_MMFR3_EL1)
 
 IDREG_START(ID_MMFR4_EL1)
-    IDREG_FIELD(ID_MMFR4_EL1, EVT, 28, 4)
-    IDREG_FIELD(ID_MMFR4_EL1, CCIDX, 24, 4)
-    IDREG_FIELD(ID_MMFR4_EL1, LSM, 20, 4)
-    IDREG_FIELD(ID_MMFR4_EL1, HPDS, 16, 4)
-    IDREG_FIELD(ID_MMFR4_EL1, CnP, 12, 4)
-    IDREG_FIELD(ID_MMFR4_EL1, XNX, 8, 4)
-    IDREG_FIELD(ID_MMFR4_EL1, AC2, 4, 4)
-    IDREG_FIELD(ID_MMFR4_EL1, SpecSEI, 0, 4)
+    IDREG_FIELD_START(ID_MMFR4_EL1, EVT, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR4_EL1, EVT)
+    IDREG_FIELD_START(ID_MMFR4_EL1, CCIDX, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR4_EL1, CCIDX)
+    IDREG_FIELD_START(ID_MMFR4_EL1, LSM, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR4_EL1, LSM)
+    IDREG_FIELD_START(ID_MMFR4_EL1, HPDS, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_MMFR4_EL1, HPDS)
+    IDREG_FIELD_START(ID_MMFR4_EL1, CnP, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR4_EL1, CnP)
+    IDREG_FIELD_START(ID_MMFR4_EL1, XNX, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR4_EL1, XNX)
+    IDREG_FIELD_START(ID_MMFR4_EL1, AC2, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR4_EL1, AC2)
+    IDREG_FIELD_START(ID_MMFR4_EL1, SpecSEI, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR4_EL1, SpecSEI)
 IDREG_END(ID_MMFR4_EL1)
 
 IDREG_START(ID_MMFR5_EL1)
-    IDREG_FIELD(ID_MMFR5_EL1, nTLBPA, 4, 4)
-    IDREG_FIELD(ID_MMFR5_EL1, ETS, 0, 4)
+    IDREG_FIELD_START(ID_MMFR5_EL1, nTLBPA, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_MMFR5_EL1, nTLBPA)
+    IDREG_FIELD_START(ID_MMFR5_EL1, ETS, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_MMFR5_EL1, ETS)
 IDREG_END(ID_MMFR5_EL1)
 
 IDREG_START(ID_PFR0_EL1)
-    IDREG_FIELD(ID_PFR0_EL1, RAS, 28, 4)
-    IDREG_FIELD(ID_PFR0_EL1, DIT, 24, 4)
-    IDREG_FIELD(ID_PFR0_EL1, AMU, 20, 4)
-    IDREG_FIELD(ID_PFR0_EL1, CSV2, 16, 4)
-    IDREG_FIELD(ID_PFR0_EL1, State3, 12, 4)
-    IDREG_FIELD(ID_PFR0_EL1, State2, 8, 4)
-    IDREG_FIELD(ID_PFR0_EL1, State1, 4, 4)
-    IDREG_FIELD(ID_PFR0_EL1, State0, 0, 4)
+    IDREG_FIELD_START(ID_PFR0_EL1, RAS, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_PFR0_EL1, RAS)
+    IDREG_FIELD_START(ID_PFR0_EL1, DIT, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_PFR0_EL1, DIT)
+    IDREG_FIELD_START(ID_PFR0_EL1, AMU, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_PFR0_EL1, AMU)
+    IDREG_FIELD_START(ID_PFR0_EL1, CSV2, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_PFR0_EL1, CSV2)
+    IDREG_FIELD_START(ID_PFR0_EL1, State3, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_PFR0_EL1, State3)
+    IDREG_FIELD_START(ID_PFR0_EL1, State2, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_PFR0_EL1, State2)
+    IDREG_FIELD_START(ID_PFR0_EL1, State1, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_PFR0_EL1, State1)
+    IDREG_FIELD_START(ID_PFR0_EL1, State0, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_PFR0_EL1, State0)
 IDREG_END(ID_PFR0_EL1)
 
 IDREG_START(ID_PFR1_EL1)
-    IDREG_FIELD(ID_PFR1_EL1, GIC, 28, 4)
-    IDREG_FIELD(ID_PFR1_EL1, Virt_frac, 24, 4)
-    IDREG_FIELD(ID_PFR1_EL1, Sec_frac, 20, 4)
-    IDREG_FIELD(ID_PFR1_EL1, GenTimer, 16, 4)
-    IDREG_FIELD(ID_PFR1_EL1, Virtualization, 12, 4)
-    IDREG_FIELD(ID_PFR1_EL1, MProgMod, 8, 4)
-    IDREG_FIELD(ID_PFR1_EL1, Security, 4, 4)
-    IDREG_FIELD(ID_PFR1_EL1, ProgMod, 0, 4)
+    IDREG_FIELD_START(ID_PFR1_EL1, GIC, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(ID_PFR1_EL1, GIC)
+    IDREG_FIELD_START(ID_PFR1_EL1, Virt_frac, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_PFR1_EL1, Virt_frac)
+    IDREG_FIELD_START(ID_PFR1_EL1, Sec_frac, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_PFR1_EL1, Sec_frac)
+    IDREG_FIELD_START(ID_PFR1_EL1, GenTimer, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_PFR1_EL1, GenTimer)
+    IDREG_FIELD_START(ID_PFR1_EL1, Virtualization, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_PFR1_EL1, Virtualization)
+    IDREG_FIELD_START(ID_PFR1_EL1, MProgMod, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_PFR1_EL1, MProgMod)
+    IDREG_FIELD_START(ID_PFR1_EL1, Security, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(ID_PFR1_EL1, Security)
+    IDREG_FIELD_START(ID_PFR1_EL1, ProgMod, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_PFR1_EL1, ProgMod)
 IDREG_END(ID_PFR1_EL1)
 
 IDREG_START(ID_PFR2_EL1)
-    IDREG_FIELD(ID_PFR2_EL1, RAS_frac, 8, 4)
-    IDREG_FIELD(ID_PFR2_EL1, SSBS, 4, 4)
-    IDREG_FIELD(ID_PFR2_EL1, CSV3, 0, 4)
+    IDREG_FIELD_START(ID_PFR2_EL1, RAS_frac, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_PFR2_EL1, RAS_frac)
+    IDREG_FIELD_START(ID_PFR2_EL1, SSBS, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_PFR2_EL1, SSBS)
+    IDREG_FIELD_START(ID_PFR2_EL1, CSV3, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(ID_PFR2_EL1, CSV3)
 IDREG_END(ID_PFR2_EL1)
 
 IDREG_START(MIDR_EL1)
-    IDREG_FIELD(MIDR_EL1, Implementer, 24, 8)
+    IDREG_FIELD_START(MIDR_EL1, Implementer, 24, 8)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(65)
+        IDREG_FIELD_ARCH_VAL(66)
+        IDREG_FIELD_ARCH_VAL(67)
+        IDREG_FIELD_ARCH_VAL(68)
+        IDREG_FIELD_ARCH_VAL(70)
+        IDREG_FIELD_ARCH_VAL(73)
+        IDREG_FIELD_ARCH_VAL(77)
+        IDREG_FIELD_ARCH_VAL(78)
+        IDREG_FIELD_ARCH_VAL(80)
+        IDREG_FIELD_ARCH_VAL(81)
+        IDREG_FIELD_ARCH_VAL(86)
+        IDREG_FIELD_ARCH_VAL(105)
+        IDREG_FIELD_ARCH_VAL(192)
+    IDREG_FIELD_END(MIDR_EL1, Implementer)
     IDREG_FIELD(MIDR_EL1, Variant, 20, 4)
-    IDREG_FIELD(MIDR_EL1, Architecture, 16, 4)
+    IDREG_FIELD_START(MIDR_EL1, Architecture, 16, 4)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+        IDREG_FIELD_ARCH_VAL(5)
+        IDREG_FIELD_ARCH_VAL(6)
+        IDREG_FIELD_ARCH_VAL(7)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(MIDR_EL1, Architecture)
     IDREG_FIELD(MIDR_EL1, PartNum, 4, 12)
     IDREG_FIELD(MIDR_EL1, Revision, 0, 4)
 IDREG_END(MIDR_EL1)
 
 IDREG_START(MPIDR_EL1)
     IDREG_FIELD(MPIDR_EL1, Aff3, 32, 8)
-    IDREG_FIELD(MPIDR_EL1, U, 30, 1)
-    IDREG_FIELD(MPIDR_EL1, MT, 24, 1)
+    IDREG_FIELD_START(MPIDR_EL1, U, 30, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MPIDR_EL1, U)
+    IDREG_FIELD_START(MPIDR_EL1, MT, 24, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MPIDR_EL1, MT)
     IDREG_FIELD(MPIDR_EL1, Aff2, 16, 8)
     IDREG_FIELD(MPIDR_EL1, Aff1, 8, 8)
     IDREG_FIELD(MPIDR_EL1, Aff0, 0, 8)
 IDREG_END(MPIDR_EL1)
 
 IDREG_START(MVFR0_EL1)
-    IDREG_FIELD(MVFR0_EL1, FPRound, 28, 4)
-    IDREG_FIELD(MVFR0_EL1, FPShVec, 24, 4)
-    IDREG_FIELD(MVFR0_EL1, FPSqrt, 20, 4)
-    IDREG_FIELD(MVFR0_EL1, FPDivide, 16, 4)
-    IDREG_FIELD(MVFR0_EL1, FPTrap, 12, 4)
-    IDREG_FIELD(MVFR0_EL1, FPDP, 8, 4)
-    IDREG_FIELD(MVFR0_EL1, FPSP, 4, 4)
-    IDREG_FIELD(MVFR0_EL1, SIMDReg, 0, 4)
+    IDREG_FIELD_START(MVFR0_EL1, FPRound, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR0_EL1, FPRound)
+    IDREG_FIELD_START(MVFR0_EL1, FPShVec, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR0_EL1, FPShVec)
+    IDREG_FIELD_START(MVFR0_EL1, FPSqrt, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR0_EL1, FPSqrt)
+    IDREG_FIELD_START(MVFR0_EL1, FPDivide, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR0_EL1, FPDivide)
+    IDREG_FIELD_START(MVFR0_EL1, FPTrap, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR0_EL1, FPTrap)
+    IDREG_FIELD_START(MVFR0_EL1, FPDP, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(MVFR0_EL1, FPDP)
+    IDREG_FIELD_START(MVFR0_EL1, FPSP, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(MVFR0_EL1, FPSP)
+    IDREG_FIELD_START(MVFR0_EL1, SIMDReg, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(MVFR0_EL1, SIMDReg)
 IDREG_END(MVFR0_EL1)
 
 IDREG_START(MVFR1_EL1)
-    IDREG_FIELD(MVFR1_EL1, SIMDFMAC, 28, 4)
-    IDREG_FIELD(MVFR1_EL1, FPHP, 24, 4)
-    IDREG_FIELD(MVFR1_EL1, SIMDHP, 20, 4)
-    IDREG_FIELD(MVFR1_EL1, SIMDSP, 16, 4)
-    IDREG_FIELD(MVFR1_EL1, SIMDInt, 12, 4)
-    IDREG_FIELD(MVFR1_EL1, SIMDLS, 8, 4)
-    IDREG_FIELD(MVFR1_EL1, FPDNaN, 4, 4)
-    IDREG_FIELD(MVFR1_EL1, FPFtZ, 0, 4)
+    IDREG_FIELD_START(MVFR1_EL1, SIMDFMAC, 28, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR1_EL1, SIMDFMAC)
+    IDREG_FIELD_START(MVFR1_EL1, FPHP, 24, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(MVFR1_EL1, FPHP)
+    IDREG_FIELD_START(MVFR1_EL1, SIMDHP, 20, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+    IDREG_FIELD_END(MVFR1_EL1, SIMDHP)
+    IDREG_FIELD_START(MVFR1_EL1, SIMDSP, 16, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR1_EL1, SIMDSP)
+    IDREG_FIELD_START(MVFR1_EL1, SIMDInt, 12, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR1_EL1, SIMDInt)
+    IDREG_FIELD_START(MVFR1_EL1, SIMDLS, 8, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR1_EL1, SIMDLS)
+    IDREG_FIELD_START(MVFR1_EL1, FPDNaN, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR1_EL1, FPDNaN)
+    IDREG_FIELD_START(MVFR1_EL1, FPFtZ, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(MVFR1_EL1, FPFtZ)
 IDREG_END(MVFR1_EL1)
 
 IDREG_START(MVFR2_EL1)
-    IDREG_FIELD(MVFR2_EL1, FPMisc, 4, 4)
-    IDREG_FIELD(MVFR2_EL1, SIMDMisc, 0, 4)
+    IDREG_FIELD_START(MVFR2_EL1, FPMisc, 4, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+        IDREG_FIELD_ARCH_VAL(4)
+    IDREG_FIELD_END(MVFR2_EL1, FPMisc)
+    IDREG_FIELD_START(MVFR2_EL1, SIMDMisc, 0, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(MVFR2_EL1, SIMDMisc)
 IDREG_END(MVFR2_EL1)
 
 IDREG_START(REVIDR_EL1)
 IDREG_END(REVIDR_EL1)
 
 IDREG_START(SMIDR_EL1)
-    IDREG_FIELD(SMIDR_EL1, NSMC, 56, 4)
-    IDREG_FIELD(SMIDR_EL1, HIP, 52, 4)
+    IDREG_FIELD_START(SMIDR_EL1, NSMC, 56, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(15)
+    IDREG_FIELD_END(SMIDR_EL1, NSMC)
+    IDREG_FIELD_START(SMIDR_EL1, HIP, 52, 4)
+        IDREG_FIELD_ARCH_VAL(0)
+    IDREG_FIELD_END(SMIDR_EL1, HIP)
     IDREG_FIELD(SMIDR_EL1, Affinity2, 32, 20)
-    IDREG_FIELD(SMIDR_EL1, Implementer, 24, 8)
+    IDREG_FIELD_START(SMIDR_EL1, Implementer, 24, 8)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(65)
+        IDREG_FIELD_ARCH_VAL(66)
+        IDREG_FIELD_ARCH_VAL(67)
+        IDREG_FIELD_ARCH_VAL(68)
+        IDREG_FIELD_ARCH_VAL(70)
+        IDREG_FIELD_ARCH_VAL(73)
+        IDREG_FIELD_ARCH_VAL(77)
+        IDREG_FIELD_ARCH_VAL(78)
+        IDREG_FIELD_ARCH_VAL(80)
+        IDREG_FIELD_ARCH_VAL(81)
+        IDREG_FIELD_ARCH_VAL(86)
+        IDREG_FIELD_ARCH_VAL(105)
+        IDREG_FIELD_ARCH_VAL(192)
+    IDREG_FIELD_END(SMIDR_EL1, Implementer)
     IDREG_FIELD(SMIDR_EL1, Revision, 16, 8)
-    IDREG_FIELD(SMIDR_EL1, SMPS, 15, 1)
-    IDREG_FIELD(SMIDR_EL1, SH, 13, 2)
+    IDREG_FIELD_START(SMIDR_EL1, SMPS, 15, 1)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+    IDREG_FIELD_END(SMIDR_EL1, SMPS)
+    IDREG_FIELD_START(SMIDR_EL1, SH, 13, 2)
+        IDREG_FIELD_ARCH_VAL(0)
+        IDREG_FIELD_ARCH_VAL(1)
+        IDREG_FIELD_ARCH_VAL(2)
+        IDREG_FIELD_ARCH_VAL(3)
+    IDREG_FIELD_END(SMIDR_EL1, SH)
     IDREG_FIELD(SMIDR_EL1, Affinity, 0, 12)
 IDREG_END(SMIDR_EL1)
 
diff --git a/scripts/update-aarch64-cpu-sysreg-properties.py b/scripts/update-aarch64-cpu-sysreg-properties.py
index 6f5edb88d2..e1d6c4afef 100644
--- a/scripts/update-aarch64-cpu-sysreg-properties.py
+++ b/scripts/update-aarch64-cpu-sysreg-properties.py
@@ -9,7 +9,12 @@
 #
 # IDREG_START(REG)
 #    IDREG_FIELD(REG, FIELD, SHIFT, LENGTH)
-# ...
+#    or for fields with enum values
+#    IDREG_FIELD_START(REG, FIELD, SHIFT, LENGTH)
+#        IDREG_FIELD_ARCH_VAL(VALUE)
+#        ../..
+#    IDREG_FIELD_END(REG, FIELD)
+#    ../.. 
 # IDREG_END(REG)
 #
 # Copyright (C) 2026 Red Hat, Inc.
@@ -98,6 +103,51 @@ def collect_fields(item, bit_offset=0):
     return fields
 
 
+def extract_field_enums(field):
+    enums = []
+    if not isinstance(field, dict):
+        return enums
+
+    value_obj = field.get("value")
+    if not isinstance(value_obj, dict):
+        return enums
+
+    constraints = value_obj.get("constraints")
+    if not isinstance(constraints, dict):
+        return enums
+
+    val_entries = constraints.get("values", [])
+    if not isinstance(val_entries, list):
+        return enums
+
+    for val_entry in val_entries:
+        if not isinstance(val_entry, dict):
+            continue
+            
+        if val_entry.get("_type") == "Values.Value":
+            raw_val = val_entry.get("value")
+            if raw_val is None:
+                continue
+                
+            # some of the values have ' like "'0100'"
+            raw_val_str = str(raw_val).strip().replace("'", "")
+            
+            try:
+                # convert into bin 
+                int_val = int(raw_val_str, 2)
+            except ValueError:
+                try:
+                    # Fallback to dec if not bin
+                    int_val = int(raw_val_str, 0)
+                except ValueError:
+                    continue
+            
+            enums.append({
+                'value': int_val
+            })
+            
+    return enums
+
 def generate_sysreg_properties_from_registers_json(id_reg_names, raw_json_path):
     with open(raw_json_path, 'r') as f:
         register_data = json.load(f)
@@ -128,16 +178,31 @@ def generate_sysreg_properties_from_registers_json(id_reg_names, raw_json_path):
                     # Only keep the fields with the highest MSB
                     # needed fir CCSIDR_EL1
                     if name not in unique_fields or msb > unique_fields[name]['msb']:
-                        unique_fields[name] = {'lsb': lsb, 'msb': msb, 'width': width}
+                        # extract enum values if any
+                        enums = extract_field_enums(val)
+                        unique_fields[name] = {'lsb': lsb, 'msb': msb, 'width': width, 'enums': enums}
 
         # Sort decreasing lsbs
         sorted_fields = sorted(unique_fields.items(),
                                key=lambda x: x[1]['lsb'], reverse=True)
 
         for name, bits in sorted_fields:
-            line = (f"    IDREG_FIELD({reg_name}, "
-                    f"{name}, {bits['lsb']}, {bits['width']})\n")
+            enums_list = bits.get('enums', [])
+
+            if enums_list:
+               line = (f"    IDREG_FIELD_START({reg_name}, "
+                       f"{name}, {bits['lsb']}, {bits['width']})\n")
+            else:
+               line = (f"    IDREG_FIELD({reg_name}, "
+                       f"{name}, {bits['lsb']}, {bits['width']})\n")
             final_output += line
+            # add the enum value definition if any
+            for enum_item in enums_list:
+                final_output += (f"        IDREG_FIELD_ARCH_VAL({enum_item['value']})\n")
+            if enums_list:
+               line = (f"    IDREG_FIELD_END({reg_name}, {name})\n")
+               final_output += line
+     
         final_output += f"IDREG_END({reg_name})\n"
         final_output += "\n"
 
@@ -147,7 +212,11 @@ def generate_sysreg_properties_from_registers_json(id_reg_names, raw_json_path):
         f.write("/* SPDX-License-Identifier: GPL-2.0-or-later */\n\n")
         f.write("/* IDREG_START(REG) */\n")
         f.write("/*     IDREG_FIELD(REG, FIELD, SHIFT, LENGTH) */\n")
+        f.write("/*     or for fields with enum values */\n")
+        f.write("/*     IDREG_FIELD_START(REG, FIELD, SHIFT, LENGTH) */\n")
+        f.write("/*         IDREG_FIELD_ARCH_VAL(VALUE) */\n")
         f.write("/* ... */\n")
+        f.write("/*     IDREG_FIELD_END(REG, FIELD) */\n")
         f.write("/* IDREG_END(REG) */\n\n")
         f.write(final_output)
 
-- 
2.53.0

Re: [RFC PATCH v7 08/18] target/arm/cpu-idregs.h.inc: Generate enum values

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> Modify the python script so that enum values are also
> extracted from Registers.json.
> 
> If enum values are found, the field and its enum values are
> defined within IDREG_FIELD_START/END. Each enum value is
> defined with IDREG_FIELD_ARCH_VAL() macro.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> ---
> target/arm/cpu-idregs.h.inc                   | 2290 ++++++++++++++---
> .../update-aarch64-cpu-sysreg-properties.py   |   77 +-
> 2 files changed, 1959 insertions(+), 408 deletions(-)
> 
> diff --git a/target/arm/cpu-idregs.h.inc b/target/arm/cpu-idregs.h.inc
> index a10d750123..1c8b26133b 100644
> --- a/target/arm/cpu-idregs.h.inc
> +++ b/target/arm/cpu-idregs.h.inc
> @@ -4,7 +4,11 @@
> 
> /* IDREG_START(REG) */
> /*     IDREG_FIELD(REG, FIELD, SHIFT, LENGTH) */
> +/*     or for fields with enum values */
> +/*     IDREG_FIELD_START(REG, FIELD, SHIFT, LENGTH) */
> +/*         IDREG_FIELD_ARCH_VAL(VALUE) */
> /* ... */
> +/*     IDREG_FIELD_END(REG, FIELD) */
> /* IDREG_END(REG) */
> 
> IDREG_START(AIDR_EL1)
> @@ -28,7 +32,16 @@ IDREG_START(CLIDR_EL1)
>     IDREG_FIELD(CLIDR_EL1, Ttype3, 37, 2)
>     IDREG_FIELD(CLIDR_EL1, Ttype2, 35, 2)
>     IDREG_FIELD(CLIDR_EL1, Ttype1, 33, 2)
> -    IDREG_FIELD(CLIDR_EL1, ICB, 30, 3)
> +    IDREG_FIELD_START(CLIDR_EL1, ICB, 30, 3)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +        IDREG_FIELD_ARCH_VAL(6)
> +        IDREG_FIELD_ARCH_VAL(7)
> +    IDREG_FIELD_END(CLIDR_EL1, ICB)
>     IDREG_FIELD(CLIDR_EL1, LoUU, 27, 3)
>     IDREG_FIELD(CLIDR_EL1, LoC, 24, 3)
>     IDREG_FIELD(CLIDR_EL1, LoUIS, 21, 3)
> @@ -43,12 +56,23 @@ IDREG_END(CLIDR_EL1)
> 
> IDREG_START(CTR_EL0)
>     IDREG_FIELD(CTR_EL0, TminLine, 32, 6)
> -    IDREG_FIELD(CTR_EL0, DIC, 29, 1)
> -    IDREG_FIELD(CTR_EL0, IDC, 28, 1)
> +    IDREG_FIELD_START(CTR_EL0, DIC, 29, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(CTR_EL0, DIC)
> +    IDREG_FIELD_START(CTR_EL0, IDC, 28, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(CTR_EL0, IDC)
>     IDREG_FIELD(CTR_EL0, CWG, 24, 4)
>     IDREG_FIELD(CTR_EL0, ERG, 20, 4)
>     IDREG_FIELD(CTR_EL0, DminLine, 16, 4)
> -    IDREG_FIELD(CTR_EL0, L1Ip, 14, 2)
> +    IDREG_FIELD_START(CTR_EL0, L1Ip, 14, 2)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(CTR_EL0, L1Ip)
>     IDREG_FIELD(CTR_EL0, IminLine, 0, 4)
> IDREG_END(CTR_EL0)
> 
> @@ -69,549 +93,2007 @@ IDREG_START(ID_AA64AFR1_EL1)
> IDREG_END(ID_AA64AFR1_EL1)
> 
> IDREG_START(ID_AA64DFR0_EL1)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, HPMN0, 60, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, ExtTrcBuff, 56, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, BRBE, 52, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, MTPMU, 48, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, TraceBuffer, 44, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, TraceFilt, 40, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, DoubleLock, 36, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, PMSVer, 32, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, CTX_CMPs, 28, 4)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, HPMN0, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, HPMN0)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, ExtTrcBuff, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, ExtTrcBuff)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, BRBE, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, BRBE)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, MTPMU, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, MTPMU)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, TraceBuffer, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, TraceBuffer)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, TraceFilt, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, TraceFilt)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, DoubleLock, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, DoubleLock)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, PMSVer, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +        IDREG_FIELD_ARCH_VAL(6)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, PMSVer)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, CTX_CMPs, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, CTX_CMPs)
>     IDREG_FIELD(ID_AA64DFR0_EL1, WRPs, 20, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, PMSS, 16, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, BRPs, 12, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, PMUVer, 8, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, TraceVer, 4, 4)
> -    IDREG_FIELD(ID_AA64DFR0_EL1, DebugVer, 0, 4)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, PMSS, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, PMSS)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, BRPs, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, BRPs)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, PMUVer, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +        IDREG_FIELD_ARCH_VAL(6)
> +        IDREG_FIELD_ARCH_VAL(7)
> +        IDREG_FIELD_ARCH_VAL(8)
> +        IDREG_FIELD_ARCH_VAL(9)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, PMUVer)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, TraceVer, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, TraceVer)
> +    IDREG_FIELD_START(ID_AA64DFR0_EL1, DebugVer, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(6)
> +        IDREG_FIELD_ARCH_VAL(7)
> +        IDREG_FIELD_ARCH_VAL(8)
> +        IDREG_FIELD_ARCH_VAL(9)
> +        IDREG_FIELD_ARCH_VAL(10)
> +        IDREG_FIELD_ARCH_VAL(11)
> +    IDREG_FIELD_END(ID_AA64DFR0_EL1, DebugVer)
> IDREG_END(ID_AA64DFR0_EL1)
> 
> IDREG_START(ID_AA64DFR1_EL1)
>     IDREG_FIELD(ID_AA64DFR1_EL1, ABL_CMPs, 56, 8)
> -    IDREG_FIELD(ID_AA64DFR1_EL1, DPFZS, 52, 4)
> -    IDREG_FIELD(ID_AA64DFR1_EL1, EBEP, 48, 4)
> -    IDREG_FIELD(ID_AA64DFR1_EL1, ITE, 44, 4)
> -    IDREG_FIELD(ID_AA64DFR1_EL1, ABLE, 40, 4)
> -    IDREG_FIELD(ID_AA64DFR1_EL1, PMICNTR, 36, 4)
> -    IDREG_FIELD(ID_AA64DFR1_EL1, SPMU, 32, 4)
> -    IDREG_FIELD(ID_AA64DFR1_EL1, CTX_CMPs, 24, 8)
> -    IDREG_FIELD(ID_AA64DFR1_EL1, WRPs, 16, 8)
> -    IDREG_FIELD(ID_AA64DFR1_EL1, BRPs, 8, 8)
> +    IDREG_FIELD_START(ID_AA64DFR1_EL1, DPFZS, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR1_EL1, DPFZS)
> +    IDREG_FIELD_START(ID_AA64DFR1_EL1, EBEP, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR1_EL1, EBEP)
> +    IDREG_FIELD_START(ID_AA64DFR1_EL1, ITE, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR1_EL1, ITE)
> +    IDREG_FIELD_START(ID_AA64DFR1_EL1, ABLE, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR1_EL1, ABLE)
> +    IDREG_FIELD_START(ID_AA64DFR1_EL1, PMICNTR, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR1_EL1, PMICNTR)
> +    IDREG_FIELD_START(ID_AA64DFR1_EL1, SPMU, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64DFR1_EL1, SPMU)
> +    IDREG_FIELD_START(ID_AA64DFR1_EL1, CTX_CMPs, 24, 8)
> +        IDREG_FIELD_ARCH_VAL(0)
> +    IDREG_FIELD_END(ID_AA64DFR1_EL1, CTX_CMPs)
> +    IDREG_FIELD_START(ID_AA64DFR1_EL1, WRPs, 16, 8)
> +        IDREG_FIELD_ARCH_VAL(0)
> +    IDREG_FIELD_END(ID_AA64DFR1_EL1, WRPs)
> +    IDREG_FIELD_START(ID_AA64DFR1_EL1, BRPs, 8, 8)
> +        IDREG_FIELD_ARCH_VAL(0)
> +    IDREG_FIELD_END(ID_AA64DFR1_EL1, BRPs)
>     IDREG_FIELD(ID_AA64DFR1_EL1, SYSPMUID, 0, 8)
> IDREG_END(ID_AA64DFR1_EL1)
> 
> IDREG_START(ID_AA64DFR2_EL1)
> -    IDREG_FIELD(ID_AA64DFR2_EL1, TRBE_EXC, 24, 4)
> -    IDREG_FIELD(ID_AA64DFR2_EL1, SPE_nVM, 20, 4)
> -    IDREG_FIELD(ID_AA64DFR2_EL1, SPE_EXC, 16, 4)
> -    IDREG_FIELD(ID_AA64DFR2_EL1, BWE, 4, 4)
> -    IDREG_FIELD(ID_AA64DFR2_EL1, STEP, 0, 4)
> +    IDREG_FIELD_START(ID_AA64DFR2_EL1, TRBE_EXC, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR2_EL1, TRBE_EXC)
> +    IDREG_FIELD_START(ID_AA64DFR2_EL1, SPE_nVM, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR2_EL1, SPE_nVM)
> +    IDREG_FIELD_START(ID_AA64DFR2_EL1, SPE_EXC, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR2_EL1, SPE_EXC)
> +    IDREG_FIELD_START(ID_AA64DFR2_EL1, BWE, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64DFR2_EL1, BWE)
> +    IDREG_FIELD_START(ID_AA64DFR2_EL1, STEP, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64DFR2_EL1, STEP)
> IDREG_END(ID_AA64DFR2_EL1)
> 
> IDREG_START(ID_AA64FPFR0_EL1)
> -    IDREG_FIELD(ID_AA64FPFR0_EL1, F8CVT, 31, 1)
> -    IDREG_FIELD(ID_AA64FPFR0_EL1, F8FMA, 30, 1)
> -    IDREG_FIELD(ID_AA64FPFR0_EL1, F8DP4, 29, 1)
> -    IDREG_FIELD(ID_AA64FPFR0_EL1, F8DP2, 28, 1)
> -    IDREG_FIELD(ID_AA64FPFR0_EL1, F8MM8, 27, 1)
> -    IDREG_FIELD(ID_AA64FPFR0_EL1, F8MM4, 26, 1)
> -    IDREG_FIELD(ID_AA64FPFR0_EL1, F16MM2, 15, 1)
> -    IDREG_FIELD(ID_AA64FPFR0_EL1, F8E4M3, 1, 1)
> -    IDREG_FIELD(ID_AA64FPFR0_EL1, F8E5M2, 0, 1)
> +    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8CVT, 31, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8CVT)
> +    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8FMA, 30, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8FMA)
> +    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8DP4, 29, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8DP4)
> +    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8DP2, 28, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8DP2)
> +    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8MM8, 27, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8MM8)
> +    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8MM4, 26, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8MM4)
> +    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F16MM2, 15, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F16MM2)
> +    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8E4M3, 1, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8E4M3)
> +    IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8E5M2, 0, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8E5M2)
> IDREG_END(ID_AA64FPFR0_EL1)
> 
> IDREG_START(ID_AA64ISAR0_EL1)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, RNDR, 60, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, TLB, 56, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, TS, 52, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, FHM, 48, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, DP, 44, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, SM4, 40, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, SM3, 36, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, SHA3, 32, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, RDM, 28, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, Atomic, 20, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, CRC32, 16, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, SHA2, 12, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, SHA1, 8, 4)
> -    IDREG_FIELD(ID_AA64ISAR0_EL1, AES, 4, 4)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, RNDR, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, RNDR)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, TLB, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, TLB)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, TS, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, TS)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, FHM, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, FHM)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, DP, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, DP)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, SM4, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, SM4)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, SM3, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, SM3)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, SHA3, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, SHA3)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, RDM, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, RDM)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, Atomic, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, Atomic)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, CRC32, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, CRC32)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, SHA2, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, SHA2)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, SHA1, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, SHA1)
> +    IDREG_FIELD_START(ID_AA64ISAR0_EL1, AES, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR0_EL1, AES)
> IDREG_END(ID_AA64ISAR0_EL1)
> 
> IDREG_START(ID_AA64ISAR1_EL1)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, LS64, 60, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, XS, 56, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, I8MM, 52, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, DGH, 48, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, BF16, 44, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, SPECRES, 40, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, SB, 36, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, FRINTTS, 32, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, GPI, 28, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, GPA, 24, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, LRCPC, 20, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, FCMA, 16, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, JSCVT, 12, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, API, 8, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, APA, 4, 4)
> -    IDREG_FIELD(ID_AA64ISAR1_EL1, DPB, 0, 4)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, LS64, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, LS64)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, XS, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, XS)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, I8MM, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, I8MM)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, DGH, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, DGH)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, BF16, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, BF16)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, SPECRES, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, SPECRES)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, SB, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, SB)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, FRINTTS, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, FRINTTS)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, GPI, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, GPI)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, GPA, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, GPA)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, LRCPC, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, LRCPC)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, FCMA, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, FCMA)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, JSCVT, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, JSCVT)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, API, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +        IDREG_FIELD_ARCH_VAL(6)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, API)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, APA, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +        IDREG_FIELD_ARCH_VAL(6)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, APA)
> +    IDREG_FIELD_START(ID_AA64ISAR1_EL1, DPB, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR1_EL1, DPB)
> IDREG_END(ID_AA64ISAR1_EL1)
> 
> IDREG_START(ID_AA64ISAR2_EL1)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, ATS1A, 60, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, LUT, 56, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, CSSC, 52, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, RPRFM, 48, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, PCDPHINT, 44, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, PRFMSLC, 40, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, SYSINSTR_128, 36, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, SYSREG_128, 32, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, CLRBHB, 28, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, PAC_frac, 24, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, BC, 20, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, MOPS, 16, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, APA3, 12, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, GPA3, 8, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, RPRES, 4, 4)
> -    IDREG_FIELD(ID_AA64ISAR2_EL1, WFxT, 0, 4)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, ATS1A, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, ATS1A)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, LUT, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, LUT)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, CSSC, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, CSSC)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, RPRFM, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, RPRFM)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, PCDPHINT, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, PCDPHINT)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, PRFMSLC, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, PRFMSLC)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, SYSINSTR_128, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, SYSINSTR_128)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, SYSREG_128, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, SYSREG_128)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, CLRBHB, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, CLRBHB)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, PAC_frac, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, PAC_frac)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, BC, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, BC)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, MOPS, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, MOPS)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, APA3, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +        IDREG_FIELD_ARCH_VAL(6)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, APA3)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, GPA3, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, GPA3)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, RPRES, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, RPRES)
> +    IDREG_FIELD_START(ID_AA64ISAR2_EL1, WFxT, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR2_EL1, WFxT)
> IDREG_END(ID_AA64ISAR2_EL1)
> 
> IDREG_START(ID_AA64ISAR3_EL1)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, LSCP, 44, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, LSCSHINT, 40, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, MTETC, 36, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, PAC_frac2, 32, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, FPRCVT, 28, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, LSUI, 24, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, OCCMO, 20, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, LSFE, 16, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, PACM, 12, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, TLBIW, 8, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, FAMINMAX, 4, 4)
> -    IDREG_FIELD(ID_AA64ISAR3_EL1, CPA, 0, 4)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, LSCP, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, LSCP)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, LSCSHINT, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, LSCSHINT)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, MTETC, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, MTETC)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, PAC_frac2, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, PAC_frac2)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, FPRCVT, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, FPRCVT)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, LSUI, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, LSUI)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, OCCMO, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, OCCMO)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, LSFE, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, LSFE)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, PACM, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, PACM)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, TLBIW, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, TLBIW)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, FAMINMAX, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, FAMINMAX)
> +    IDREG_FIELD_START(ID_AA64ISAR3_EL1, CPA, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ISAR3_EL1, CPA)
> IDREG_END(ID_AA64ISAR3_EL1)
> 
> IDREG_START(ID_AA64MMFR0_EL1)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, ECV, 60, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, FGT, 56, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, ExS, 44, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran4_2, 40, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran64_2, 36, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran16_2, 32, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran4, 28, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran64, 24, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, TGran16, 20, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, BigEndEL0, 16, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, SNSMem, 12, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, BigEnd, 8, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, ASIDBits, 4, 4)
> -    IDREG_FIELD(ID_AA64MMFR0_EL1, PARange, 0, 4)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, ECV, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, ECV)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, FGT, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, FGT)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, ExS, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, ExS)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran4_2, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran4_2)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran64_2, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran64_2)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran16_2, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran16_2)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran4, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran4)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran64, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran64)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, TGran16, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, TGran16)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, BigEndEL0, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, BigEndEL0)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, SNSMem, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, SNSMem)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, BigEnd, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, BigEnd)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, ASIDBits, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, ASIDBits)
> +    IDREG_FIELD_START(ID_AA64MMFR0_EL1, PARange, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +    IDREG_FIELD_END(ID_AA64MMFR0_EL1, PARange)
> IDREG_END(ID_AA64MMFR0_EL1)
> 
> IDREG_START(ID_AA64MMFR1_EL1)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, ECBHB, 60, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, CMOW, 56, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, TIDCP1, 52, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, nTLBPA, 48, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, AFP, 44, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, HCX, 40, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, ETS, 36, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, TWED, 32, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, XNX, 28, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, SpecSEI, 24, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, PAN, 20, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, LO, 16, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, HPDS, 12, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, VH, 8, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, VMIDBits, 4, 4)
> -    IDREG_FIELD(ID_AA64MMFR1_EL1, HAFDBS, 0, 4)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, ECBHB, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, ECBHB)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, CMOW, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, CMOW)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, TIDCP1, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, TIDCP1)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, nTLBPA, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, nTLBPA)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, AFP, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, AFP)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, HCX, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, HCX)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, ETS, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, ETS)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, TWED, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, TWED)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, XNX, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, XNX)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, SpecSEI, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, SpecSEI)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, PAN, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, PAN)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, LO, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, LO)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, HPDS, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, HPDS)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, VH, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, VH)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, VMIDBits, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, VMIDBits)
> +    IDREG_FIELD_START(ID_AA64MMFR1_EL1, HAFDBS, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +    IDREG_FIELD_END(ID_AA64MMFR1_EL1, HAFDBS)
> IDREG_END(ID_AA64MMFR1_EL1)
> 
> IDREG_START(ID_AA64MMFR2_EL1)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, E0PD, 60, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, EVT, 56, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, BBM, 52, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, TTL, 48, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, FWB, 40, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, IDS, 36, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, AT, 32, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, ST, 28, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, NV, 24, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, CCIDX, 20, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, VARange, 16, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, IESB, 12, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, LSM, 8, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, UAO, 4, 4)
> -    IDREG_FIELD(ID_AA64MMFR2_EL1, CnP, 0, 4)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, E0PD, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, E0PD)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, EVT, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, EVT)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, BBM, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, BBM)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, TTL, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, TTL)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, FWB, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, FWB)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, IDS, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, IDS)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, AT, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, AT)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, ST, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, ST)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, NV, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, NV)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, CCIDX, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, CCIDX)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, VARange, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, VARange)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, IESB, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, IESB)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, LSM, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, LSM)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, UAO, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, UAO)
> +    IDREG_FIELD_START(ID_AA64MMFR2_EL1, CnP, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR2_EL1, CnP)
> IDREG_END(ID_AA64MMFR2_EL1)
> 
> IDREG_START(ID_AA64MMFR3_EL1)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, Spec_FPACC, 60, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, ADERR, 56, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, SDERR, 52, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, ANERR, 44, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, SNERR, 40, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, D128_2, 36, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, D128, 32, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, MEC, 28, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, AIE, 24, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, S2POE, 20, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, S1POE, 16, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, S2PIE, 12, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, S1PIE, 8, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, SCTLRX, 4, 4)
> -    IDREG_FIELD(ID_AA64MMFR3_EL1, TCRX, 0, 4)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, Spec_FPACC, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, Spec_FPACC)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, ADERR, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, ADERR)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, SDERR, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, SDERR)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, ANERR, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, ANERR)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, SNERR, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, SNERR)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, D128_2, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, D128_2)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, D128, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, D128)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, MEC, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, MEC)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, AIE, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, AIE)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, S2POE, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, S2POE)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, S1POE, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, S1POE)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, S2PIE, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, S2PIE)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, S1PIE, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, S1PIE)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, SCTLRX, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, SCTLRX)
> +    IDREG_FIELD_START(ID_AA64MMFR3_EL1, TCRX, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR3_EL1, TCRX)
> IDREG_END(ID_AA64MMFR3_EL1)
> 
> IDREG_START(ID_AA64MMFR4_EL1)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, MTEFGT, 60, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, SCRX, 56, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, TEV, 52, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, TPS, 48, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, SRMASK, 44, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, TLBID, 40, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, E3DSE, 36, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, EAESR, 32, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, RMEGDI, 28, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, E2H0, 24, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, NV_frac, 20, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, FGWTE3, 16, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, HACDBS, 12, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, ASID2, 8, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, EIESB, 4, 4)
> -    IDREG_FIELD(ID_AA64MMFR4_EL1, PoPS, 0, 4)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, MTEFGT, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, MTEFGT)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, SCRX, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, SCRX)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, TEV, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, TEV)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, TPS, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, TPS)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, SRMASK, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, SRMASK)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, TLBID, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, TLBID)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, E3DSE, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, E3DSE)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, EAESR, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, EAESR)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, RMEGDI, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, RMEGDI)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, E2H0, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(14)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, E2H0)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, NV_frac, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, NV_frac)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, FGWTE3, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, FGWTE3)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, HACDBS, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, HACDBS)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, ASID2, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, ASID2)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, EIESB, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(15)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, EIESB)
> +    IDREG_FIELD_START(ID_AA64MMFR4_EL1, PoPS, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64MMFR4_EL1, PoPS)
> IDREG_END(ID_AA64MMFR4_EL1)
> 
> IDREG_START(ID_AA64PFR0_EL1)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, CSV3, 60, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, CSV2, 56, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, RME, 52, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, DIT, 48, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, AMU, 44, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, MPAM, 40, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, SEL2, 36, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, SVE, 32, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, RAS, 28, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, GIC, 24, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, AdvSIMD, 20, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, FP, 16, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, EL3, 12, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, EL2, 8, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, EL1, 4, 4)
> -    IDREG_FIELD(ID_AA64PFR0_EL1, EL0, 0, 4)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, CSV3, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, CSV3)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, CSV2, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, CSV2)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, RME, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, RME)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, DIT, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, DIT)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, AMU, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, AMU)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, MPAM, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, MPAM)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, SEL2, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, SEL2)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, SVE, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, SVE)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, RAS, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, RAS)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, GIC, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, GIC)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, AdvSIMD, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, AdvSIMD)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, FP, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, FP)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, EL3, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, EL3)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, EL2, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, EL2)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, EL1, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, EL1)
> +    IDREG_FIELD_START(ID_AA64PFR0_EL1, EL0, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR0_EL1, EL0)
> IDREG_END(ID_AA64PFR0_EL1)
> 
> IDREG_START(ID_AA64PFR1_EL1)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, PFAR, 60, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, DF2, 56, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, MTEX, 52, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, THE, 48, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, GCS, 44, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, MTE_frac, 40, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, NMI, 36, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, CSV2_frac, 32, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, RNDR_trap, 28, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, SME, 24, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, MPAM_frac, 16, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, RAS_frac, 12, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, MTE, 8, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, SSBS, 4, 4)
> -    IDREG_FIELD(ID_AA64PFR1_EL1, BT, 0, 4)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, PFAR, 60, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, PFAR)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, DF2, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, DF2)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, MTEX, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, MTEX)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, THE, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, THE)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, GCS, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, GCS)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, MTE_frac, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, MTE_frac)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, NMI, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, NMI)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, CSV2_frac, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, CSV2_frac)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, RNDR_trap, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, RNDR_trap)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, SME, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, SME)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, MPAM_frac, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, MPAM_frac)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, RAS_frac, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, RAS_frac)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, MTE, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, MTE)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, SSBS, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, SSBS)
> +    IDREG_FIELD_START(ID_AA64PFR1_EL1, BT, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR1_EL1, BT)
> IDREG_END(ID_AA64PFR1_EL1)
> 
> IDREG_START(ID_AA64PFR2_EL1)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, VMTETCL, 44, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, VMTETC, 40, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, VMTE, 36, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, FPMR, 32, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, MPAM2, 28, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, FGDT, 24, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, MTEEIRG, 20, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, UINJ, 16, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, GCIE, 12, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, MTEFAR, 8, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, MTESTOREONLY, 4, 4)
> -    IDREG_FIELD(ID_AA64PFR2_EL1, MTEPERM, 0, 4)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, VMTETCL, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, VMTETCL)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, VMTETC, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, VMTETC)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, VMTE, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, VMTE)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, FPMR, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, FPMR)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, MPAM2, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, MPAM2)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, FGDT, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, FGDT)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, MTEEIRG, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, MTEEIRG)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, UINJ, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, UINJ)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, GCIE, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, GCIE)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, MTEFAR, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, MTEFAR)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, MTESTOREONLY, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, MTESTOREONLY)
> +    IDREG_FIELD_START(ID_AA64PFR2_EL1, MTEPERM, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64PFR2_EL1, MTEPERM)
> IDREG_END(ID_AA64PFR2_EL1)
> 
> IDREG_START(ID_AA64SMFR0_EL1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, FA64, 63, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, LUT6, 61, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, LUTv2, 60, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, SMEver, 56, 4)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, I16I64, 52, 4)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, F64F64, 48, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, I16I32, 44, 4)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, B16B16, 43, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, F16F16, 42, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, F8F16, 41, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, F8F32, 40, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, I8I32, 36, 4)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, F16F32, 35, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, B16F32, 34, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, BI32I32, 33, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, F32F32, 32, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, SF8FMA, 30, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, SF8DP4, 29, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, SF8DP2, 28, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, SBitPerm, 25, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, AES, 24, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, SFEXPA, 23, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, STMOP, 16, 1)
> -    IDREG_FIELD(ID_AA64SMFR0_EL1, SMOP4, 0, 1)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, FA64, 63, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, FA64)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, LUT6, 61, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, LUT6)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, LUTv2, 60, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, LUTv2)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SMEver, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SMEver)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, I16I64, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, I16I64)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F64F64, 48, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F64F64)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, I16I32, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(5)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, I16I32)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, B16B16, 43, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, B16B16)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F16F16, 42, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F16F16)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F8F16, 41, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F8F16)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F8F32, 40, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F8F32)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, I8I32, 36, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, I8I32)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F16F32, 35, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F16F32)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, B16F32, 34, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, B16F32)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, BI32I32, 33, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, BI32I32)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, F32F32, 32, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, F32F32)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SF8FMA, 30, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SF8FMA)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SF8DP4, 29, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SF8DP4)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SF8DP2, 28, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SF8DP2)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SBitPerm, 25, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SBitPerm)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, AES, 24, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, AES)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SFEXPA, 23, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SFEXPA)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, STMOP, 16, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, STMOP)
> +    IDREG_FIELD_START(ID_AA64SMFR0_EL1, SMOP4, 0, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64SMFR0_EL1, SMOP4)
> IDREG_END(ID_AA64SMFR0_EL1)
> 
> IDREG_START(ID_AA64ZFR0_EL1)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, F64MM, 56, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, F32MM, 52, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, F16MM, 48, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, I8MM, 44, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, SM4, 40, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, SHA3, 32, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, B16B16, 24, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, BF16, 20, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, BitPerm, 16, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, EltPerm, 12, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, AES, 4, 4)
> -    IDREG_FIELD(ID_AA64ZFR0_EL1, SVEver, 0, 4)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, F64MM, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, F64MM)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, F32MM, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, F32MM)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, F16MM, 48, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, F16MM)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, I8MM, 44, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, I8MM)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, SM4, 40, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, SM4)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, SHA3, 32, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, SHA3)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, B16B16, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, B16B16)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, BF16, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, BF16)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, BitPerm, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, BitPerm)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, EltPerm, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, EltPerm)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, AES, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, AES)
> +    IDREG_FIELD_START(ID_AA64ZFR0_EL1, SVEver, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +    IDREG_FIELD_END(ID_AA64ZFR0_EL1, SVEver)
> IDREG_END(ID_AA64ZFR0_EL1)
> 
> IDREG_START(ID_AFR0_EL1)
> IDREG_END(ID_AFR0_EL1)
> 
> IDREG_START(ID_DFR0_EL1)
> -    IDREG_FIELD(ID_DFR0_EL1, TraceFilt, 28, 4)
> -    IDREG_FIELD(ID_DFR0_EL1, PerfMon, 24, 4)
> -    IDREG_FIELD(ID_DFR0_EL1, MProfDbg, 20, 4)
> -    IDREG_FIELD(ID_DFR0_EL1, MMapTrc, 16, 4)
> -    IDREG_FIELD(ID_DFR0_EL1, CopTrc, 12, 4)
> -    IDREG_FIELD(ID_DFR0_EL1, MMapDbg, 8, 4)
> +    IDREG_FIELD_START(ID_DFR0_EL1, TraceFilt, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_DFR0_EL1, TraceFilt)
> +    IDREG_FIELD_START(ID_DFR0_EL1, PerfMon, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +        IDREG_FIELD_ARCH_VAL(6)
> +        IDREG_FIELD_ARCH_VAL(7)
> +        IDREG_FIELD_ARCH_VAL(8)
> +        IDREG_FIELD_ARCH_VAL(9)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_DFR0_EL1, PerfMon)
> +    IDREG_FIELD_START(ID_DFR0_EL1, MProfDbg, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_DFR0_EL1, MProfDbg)
> +    IDREG_FIELD_START(ID_DFR0_EL1, MMapTrc, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_DFR0_EL1, MMapTrc)
> +    IDREG_FIELD_START(ID_DFR0_EL1, CopTrc, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_DFR0_EL1, CopTrc)
> +    IDREG_FIELD_START(ID_DFR0_EL1, MMapDbg, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +    IDREG_FIELD_END(ID_DFR0_EL1, MMapDbg)
>     IDREG_FIELD(ID_DFR0_EL1, CopSDbg, 4, 4)
> -    IDREG_FIELD(ID_DFR0_EL1, CopDbg, 0, 4)
> +    IDREG_FIELD_START(ID_DFR0_EL1, CopDbg, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +        IDREG_FIELD_ARCH_VAL(6)
> +        IDREG_FIELD_ARCH_VAL(7)
> +        IDREG_FIELD_ARCH_VAL(8)
> +        IDREG_FIELD_ARCH_VAL(9)
> +        IDREG_FIELD_ARCH_VAL(10)
> +        IDREG_FIELD_ARCH_VAL(11)
> +    IDREG_FIELD_END(ID_DFR0_EL1, CopDbg)
> IDREG_END(ID_DFR0_EL1)
> 
> IDREG_START(ID_DFR1_EL1)
> -    IDREG_FIELD(ID_DFR1_EL1, HPMN0, 4, 4)
> -    IDREG_FIELD(ID_DFR1_EL1, MTPMU, 0, 4)
> +    IDREG_FIELD_START(ID_DFR1_EL1, HPMN0, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_DFR1_EL1, HPMN0)
> +    IDREG_FIELD_START(ID_DFR1_EL1, MTPMU, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_DFR1_EL1, MTPMU)
> IDREG_END(ID_DFR1_EL1)
> 
> IDREG_START(ID_ISAR0_EL1)
> -    IDREG_FIELD(ID_ISAR0_EL1, Divide, 24, 4)
> -    IDREG_FIELD(ID_ISAR0_EL1, Debug, 20, 4)
> -    IDREG_FIELD(ID_ISAR0_EL1, Coproc, 16, 4)
> -    IDREG_FIELD(ID_ISAR0_EL1, CmpBranch, 12, 4)
> -    IDREG_FIELD(ID_ISAR0_EL1, BitField, 8, 4)
> -    IDREG_FIELD(ID_ISAR0_EL1, BitCount, 4, 4)
> -    IDREG_FIELD(ID_ISAR0_EL1, Swap, 0, 4)
> +    IDREG_FIELD_START(ID_ISAR0_EL1, Divide, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR0_EL1, Divide)
> +    IDREG_FIELD_START(ID_ISAR0_EL1, Debug, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR0_EL1, Debug)
> +    IDREG_FIELD_START(ID_ISAR0_EL1, Coproc, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +    IDREG_FIELD_END(ID_ISAR0_EL1, Coproc)
> +    IDREG_FIELD_START(ID_ISAR0_EL1, CmpBranch, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR0_EL1, CmpBranch)
> +    IDREG_FIELD_START(ID_ISAR0_EL1, BitField, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR0_EL1, BitField)
> +    IDREG_FIELD_START(ID_ISAR0_EL1, BitCount, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR0_EL1, BitCount)
> +    IDREG_FIELD_START(ID_ISAR0_EL1, Swap, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR0_EL1, Swap)
> IDREG_END(ID_ISAR0_EL1)
> 
> IDREG_START(ID_ISAR1_EL1)
> -    IDREG_FIELD(ID_ISAR1_EL1, Jazelle, 28, 4)
> -    IDREG_FIELD(ID_ISAR1_EL1, Interwork, 24, 4)
> -    IDREG_FIELD(ID_ISAR1_EL1, Immediate, 20, 4)
> -    IDREG_FIELD(ID_ISAR1_EL1, IfThen, 16, 4)
> -    IDREG_FIELD(ID_ISAR1_EL1, Extend, 12, 4)
> -    IDREG_FIELD(ID_ISAR1_EL1, Except_AR, 8, 4)
> -    IDREG_FIELD(ID_ISAR1_EL1, Except, 4, 4)
> -    IDREG_FIELD(ID_ISAR1_EL1, Endian, 0, 4)
> +    IDREG_FIELD_START(ID_ISAR1_EL1, Jazelle, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR1_EL1, Jazelle)
> +    IDREG_FIELD_START(ID_ISAR1_EL1, Interwork, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_ISAR1_EL1, Interwork)
> +    IDREG_FIELD_START(ID_ISAR1_EL1, Immediate, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR1_EL1, Immediate)
> +    IDREG_FIELD_START(ID_ISAR1_EL1, IfThen, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR1_EL1, IfThen)
> +    IDREG_FIELD_START(ID_ISAR1_EL1, Extend, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR1_EL1, Extend)
> +    IDREG_FIELD_START(ID_ISAR1_EL1, Except_AR, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR1_EL1, Except_AR)
> +    IDREG_FIELD_START(ID_ISAR1_EL1, Except, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR1_EL1, Except)
> +    IDREG_FIELD_START(ID_ISAR1_EL1, Endian, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR1_EL1, Endian)
> IDREG_END(ID_ISAR1_EL1)
> 
> IDREG_START(ID_ISAR2_EL1)
> -    IDREG_FIELD(ID_ISAR2_EL1, Reversal, 28, 4)
> -    IDREG_FIELD(ID_ISAR2_EL1, PSR_AR, 24, 4)
> -    IDREG_FIELD(ID_ISAR2_EL1, MultU, 20, 4)
> -    IDREG_FIELD(ID_ISAR2_EL1, MultS, 16, 4)
> -    IDREG_FIELD(ID_ISAR2_EL1, Mult, 12, 4)
> -    IDREG_FIELD(ID_ISAR2_EL1, MultiAccessInt, 8, 4)
> -    IDREG_FIELD(ID_ISAR2_EL1, MemHint, 4, 4)
> -    IDREG_FIELD(ID_ISAR2_EL1, LoadStore, 0, 4)
> +    IDREG_FIELD_START(ID_ISAR2_EL1, Reversal, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR2_EL1, Reversal)
> +    IDREG_FIELD_START(ID_ISAR2_EL1, PSR_AR, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR2_EL1, PSR_AR)
> +    IDREG_FIELD_START(ID_ISAR2_EL1, MultU, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR2_EL1, MultU)
> +    IDREG_FIELD_START(ID_ISAR2_EL1, MultS, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_ISAR2_EL1, MultS)
> +    IDREG_FIELD_START(ID_ISAR2_EL1, Mult, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR2_EL1, Mult)
> +    IDREG_FIELD_START(ID_ISAR2_EL1, MultiAccessInt, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR2_EL1, MultiAccessInt)
> +    IDREG_FIELD_START(ID_ISAR2_EL1, MemHint, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +    IDREG_FIELD_END(ID_ISAR2_EL1, MemHint)
> +    IDREG_FIELD_START(ID_ISAR2_EL1, LoadStore, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR2_EL1, LoadStore)
> IDREG_END(ID_ISAR2_EL1)
> 
> IDREG_START(ID_ISAR3_EL1)
> -    IDREG_FIELD(ID_ISAR3_EL1, T32EE, 28, 4)
> -    IDREG_FIELD(ID_ISAR3_EL1, TrueNOP, 24, 4)
> -    IDREG_FIELD(ID_ISAR3_EL1, T32Copy, 20, 4)
> -    IDREG_FIELD(ID_ISAR3_EL1, TabBranch, 16, 4)
> -    IDREG_FIELD(ID_ISAR3_EL1, SynchPrim, 12, 4)
> -    IDREG_FIELD(ID_ISAR3_EL1, SVC, 8, 4)
> -    IDREG_FIELD(ID_ISAR3_EL1, SIMD, 4, 4)
> -    IDREG_FIELD(ID_ISAR3_EL1, Saturate, 0, 4)
> +    IDREG_FIELD_START(ID_ISAR3_EL1, T32EE, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR3_EL1, T32EE)
> +    IDREG_FIELD_START(ID_ISAR3_EL1, TrueNOP, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR3_EL1, TrueNOP)
> +    IDREG_FIELD_START(ID_ISAR3_EL1, T32Copy, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR3_EL1, T32Copy)
> +    IDREG_FIELD_START(ID_ISAR3_EL1, TabBranch, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR3_EL1, TabBranch)
> +    IDREG_FIELD_START(ID_ISAR3_EL1, SynchPrim, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR3_EL1, SynchPrim)
> +    IDREG_FIELD_START(ID_ISAR3_EL1, SVC, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR3_EL1, SVC)
> +    IDREG_FIELD_START(ID_ISAR3_EL1, SIMD, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_ISAR3_EL1, SIMD)
> +    IDREG_FIELD_START(ID_ISAR3_EL1, Saturate, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR3_EL1, Saturate)
> IDREG_END(ID_ISAR3_EL1)
> 
> IDREG_START(ID_ISAR4_EL1)
> -    IDREG_FIELD(ID_ISAR4_EL1, SWP_frac, 28, 4)
> -    IDREG_FIELD(ID_ISAR4_EL1, PSR_M, 24, 4)
> -    IDREG_FIELD(ID_ISAR4_EL1, SynchPrim_frac, 20, 4)
> -    IDREG_FIELD(ID_ISAR4_EL1, Barrier, 16, 4)
> -    IDREG_FIELD(ID_ISAR4_EL1, SMC, 12, 4)
> -    IDREG_FIELD(ID_ISAR4_EL1, Writeback, 8, 4)
> -    IDREG_FIELD(ID_ISAR4_EL1, WithShifts, 4, 4)
> -    IDREG_FIELD(ID_ISAR4_EL1, Unpriv, 0, 4)
> +    IDREG_FIELD_START(ID_ISAR4_EL1, SWP_frac, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR4_EL1, SWP_frac)
> +    IDREG_FIELD_START(ID_ISAR4_EL1, PSR_M, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR4_EL1, PSR_M)
> +    IDREG_FIELD_START(ID_ISAR4_EL1, SynchPrim_frac, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_ISAR4_EL1, SynchPrim_frac)
> +    IDREG_FIELD_START(ID_ISAR4_EL1, Barrier, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR4_EL1, Barrier)
> +    IDREG_FIELD_START(ID_ISAR4_EL1, SMC, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR4_EL1, SMC)
> +    IDREG_FIELD_START(ID_ISAR4_EL1, Writeback, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR4_EL1, Writeback)
> +    IDREG_FIELD_START(ID_ISAR4_EL1, WithShifts, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +    IDREG_FIELD_END(ID_ISAR4_EL1, WithShifts)
> +    IDREG_FIELD_START(ID_ISAR4_EL1, Unpriv, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR4_EL1, Unpriv)
> IDREG_END(ID_ISAR4_EL1)
> 
> IDREG_START(ID_ISAR5_EL1)
> -    IDREG_FIELD(ID_ISAR5_EL1, VCMA, 28, 4)
> -    IDREG_FIELD(ID_ISAR5_EL1, RDM, 24, 4)
> -    IDREG_FIELD(ID_ISAR5_EL1, CRC32, 16, 4)
> -    IDREG_FIELD(ID_ISAR5_EL1, SHA2, 12, 4)
> -    IDREG_FIELD(ID_ISAR5_EL1, SHA1, 8, 4)
> -    IDREG_FIELD(ID_ISAR5_EL1, AES, 4, 4)
> -    IDREG_FIELD(ID_ISAR5_EL1, SEVL, 0, 4)
> +    IDREG_FIELD_START(ID_ISAR5_EL1, VCMA, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR5_EL1, VCMA)
> +    IDREG_FIELD_START(ID_ISAR5_EL1, RDM, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR5_EL1, RDM)
> +    IDREG_FIELD_START(ID_ISAR5_EL1, CRC32, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR5_EL1, CRC32)
> +    IDREG_FIELD_START(ID_ISAR5_EL1, SHA2, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR5_EL1, SHA2)
> +    IDREG_FIELD_START(ID_ISAR5_EL1, SHA1, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR5_EL1, SHA1)
> +    IDREG_FIELD_START(ID_ISAR5_EL1, AES, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR5_EL1, AES)
> +    IDREG_FIELD_START(ID_ISAR5_EL1, SEVL, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR5_EL1, SEVL)
> IDREG_END(ID_ISAR5_EL1)
> 
> IDREG_START(ID_ISAR6_EL1)
> -    IDREG_FIELD(ID_ISAR6_EL1, CLRBHB, 28, 4)
> -    IDREG_FIELD(ID_ISAR6_EL1, I8MM, 24, 4)
> -    IDREG_FIELD(ID_ISAR6_EL1, BF16, 20, 4)
> -    IDREG_FIELD(ID_ISAR6_EL1, SPECRES, 16, 4)
> -    IDREG_FIELD(ID_ISAR6_EL1, SB, 12, 4)
> -    IDREG_FIELD(ID_ISAR6_EL1, FHM, 8, 4)
> -    IDREG_FIELD(ID_ISAR6_EL1, DP, 4, 4)
> -    IDREG_FIELD(ID_ISAR6_EL1, JSCVT, 0, 4)
> +    IDREG_FIELD_START(ID_ISAR6_EL1, CLRBHB, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR6_EL1, CLRBHB)
> +    IDREG_FIELD_START(ID_ISAR6_EL1, I8MM, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR6_EL1, I8MM)
> +    IDREG_FIELD_START(ID_ISAR6_EL1, BF16, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR6_EL1, BF16)
> +    IDREG_FIELD_START(ID_ISAR6_EL1, SPECRES, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_ISAR6_EL1, SPECRES)
> +    IDREG_FIELD_START(ID_ISAR6_EL1, SB, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR6_EL1, SB)
> +    IDREG_FIELD_START(ID_ISAR6_EL1, FHM, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR6_EL1, FHM)
> +    IDREG_FIELD_START(ID_ISAR6_EL1, DP, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR6_EL1, DP)
> +    IDREG_FIELD_START(ID_ISAR6_EL1, JSCVT, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_ISAR6_EL1, JSCVT)
> IDREG_END(ID_ISAR6_EL1)
> 
> IDREG_START(ID_MMFR0_EL1)
> -    IDREG_FIELD(ID_MMFR0_EL1, InnerShr, 28, 4)
> -    IDREG_FIELD(ID_MMFR0_EL1, FCSE, 24, 4)
> -    IDREG_FIELD(ID_MMFR0_EL1, AuxReg, 20, 4)
> -    IDREG_FIELD(ID_MMFR0_EL1, TCM, 16, 4)
> -    IDREG_FIELD(ID_MMFR0_EL1, ShareLvl, 12, 4)
> -    IDREG_FIELD(ID_MMFR0_EL1, OuterShr, 8, 4)
> -    IDREG_FIELD(ID_MMFR0_EL1, PMSA, 4, 4)
> -    IDREG_FIELD(ID_MMFR0_EL1, VMSA, 0, 4)
> +    IDREG_FIELD_START(ID_MMFR0_EL1, InnerShr, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_MMFR0_EL1, InnerShr)
> +    IDREG_FIELD_START(ID_MMFR0_EL1, FCSE, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR0_EL1, FCSE)
> +    IDREG_FIELD_START(ID_MMFR0_EL1, AuxReg, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR0_EL1, AuxReg)
> +    IDREG_FIELD_START(ID_MMFR0_EL1, TCM, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_MMFR0_EL1, TCM)
> +    IDREG_FIELD_START(ID_MMFR0_EL1, ShareLvl, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR0_EL1, ShareLvl)
> +    IDREG_FIELD_START(ID_MMFR0_EL1, OuterShr, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_MMFR0_EL1, OuterShr)
> +    IDREG_FIELD_START(ID_MMFR0_EL1, PMSA, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_MMFR0_EL1, PMSA)
> +    IDREG_FIELD_START(ID_MMFR0_EL1, VMSA, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +    IDREG_FIELD_END(ID_MMFR0_EL1, VMSA)
> IDREG_END(ID_MMFR0_EL1)
> 
> IDREG_START(ID_MMFR1_EL1)
> -    IDREG_FIELD(ID_MMFR1_EL1, BPred, 28, 4)
> -    IDREG_FIELD(ID_MMFR1_EL1, L1TstCln, 24, 4)
> -    IDREG_FIELD(ID_MMFR1_EL1, L1Uni, 20, 4)
> -    IDREG_FIELD(ID_MMFR1_EL1, L1Hvd, 16, 4)
> -    IDREG_FIELD(ID_MMFR1_EL1, L1UniSW, 12, 4)
> -    IDREG_FIELD(ID_MMFR1_EL1, L1HvdSW, 8, 4)
> -    IDREG_FIELD(ID_MMFR1_EL1, L1UniVA, 4, 4)
> -    IDREG_FIELD(ID_MMFR1_EL1, L1HvdVA, 0, 4)
> +    IDREG_FIELD_START(ID_MMFR1_EL1, BPred, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +    IDREG_FIELD_END(ID_MMFR1_EL1, BPred)
> +    IDREG_FIELD_START(ID_MMFR1_EL1, L1TstCln, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR1_EL1, L1TstCln)
> +    IDREG_FIELD_START(ID_MMFR1_EL1, L1Uni, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR1_EL1, L1Uni)
> +    IDREG_FIELD_START(ID_MMFR1_EL1, L1Hvd, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_MMFR1_EL1, L1Hvd)
> +    IDREG_FIELD_START(ID_MMFR1_EL1, L1UniSW, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_MMFR1_EL1, L1UniSW)
> +    IDREG_FIELD_START(ID_MMFR1_EL1, L1HvdSW, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_MMFR1_EL1, L1HvdSW)
> +    IDREG_FIELD_START(ID_MMFR1_EL1, L1UniVA, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR1_EL1, L1UniVA)
> +    IDREG_FIELD_START(ID_MMFR1_EL1, L1HvdVA, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR1_EL1, L1HvdVA)
> IDREG_END(ID_MMFR1_EL1)
> 
> IDREG_START(ID_MMFR2_EL1)
> -    IDREG_FIELD(ID_MMFR2_EL1, HWAccFlg, 28, 4)
> -    IDREG_FIELD(ID_MMFR2_EL1, WFIStall, 24, 4)
> -    IDREG_FIELD(ID_MMFR2_EL1, MemBarr, 20, 4)
> -    IDREG_FIELD(ID_MMFR2_EL1, UniTLB, 16, 4)
> +    IDREG_FIELD_START(ID_MMFR2_EL1, HWAccFlg, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR2_EL1, HWAccFlg)
> +    IDREG_FIELD_START(ID_MMFR2_EL1, WFIStall, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR2_EL1, WFIStall)
> +    IDREG_FIELD_START(ID_MMFR2_EL1, MemBarr, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR2_EL1, MemBarr)
> +    IDREG_FIELD_START(ID_MMFR2_EL1, UniTLB, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +        IDREG_FIELD_ARCH_VAL(6)
> +    IDREG_FIELD_END(ID_MMFR2_EL1, UniTLB)
>     IDREG_FIELD(ID_MMFR2_EL1, HvdTLB, 12, 4)
> -    IDREG_FIELD(ID_MMFR2_EL1, L1HvdRng, 8, 4)
> -    IDREG_FIELD(ID_MMFR2_EL1, L1HvdBG, 4, 4)
> -    IDREG_FIELD(ID_MMFR2_EL1, L1HvdFG, 0, 4)
> +    IDREG_FIELD_START(ID_MMFR2_EL1, L1HvdRng, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR2_EL1, L1HvdRng)
> +    IDREG_FIELD_START(ID_MMFR2_EL1, L1HvdBG, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR2_EL1, L1HvdBG)
> +    IDREG_FIELD_START(ID_MMFR2_EL1, L1HvdFG, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR2_EL1, L1HvdFG)
> IDREG_END(ID_MMFR2_EL1)
> 
> IDREG_START(ID_MMFR3_EL1)
> -    IDREG_FIELD(ID_MMFR3_EL1, Supersec, 28, 4)
> -    IDREG_FIELD(ID_MMFR3_EL1, CMemSz, 24, 4)
> -    IDREG_FIELD(ID_MMFR3_EL1, CohWalk, 20, 4)
> -    IDREG_FIELD(ID_MMFR3_EL1, PAN, 16, 4)
> -    IDREG_FIELD(ID_MMFR3_EL1, MaintBcst, 12, 4)
> -    IDREG_FIELD(ID_MMFR3_EL1, BPMaint, 8, 4)
> -    IDREG_FIELD(ID_MMFR3_EL1, CMaintSW, 4, 4)
> -    IDREG_FIELD(ID_MMFR3_EL1, CMaintVA, 0, 4)
> +    IDREG_FIELD_START(ID_MMFR3_EL1, Supersec, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(ID_MMFR3_EL1, Supersec)
> +    IDREG_FIELD_START(ID_MMFR3_EL1, CMemSz, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR3_EL1, CMemSz)
> +    IDREG_FIELD_START(ID_MMFR3_EL1, CohWalk, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR3_EL1, CohWalk)
> +    IDREG_FIELD_START(ID_MMFR3_EL1, PAN, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR3_EL1, PAN)
> +    IDREG_FIELD_START(ID_MMFR3_EL1, MaintBcst, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR3_EL1, MaintBcst)
> +    IDREG_FIELD_START(ID_MMFR3_EL1, BPMaint, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR3_EL1, BPMaint)
> +    IDREG_FIELD_START(ID_MMFR3_EL1, CMaintSW, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR3_EL1, CMaintSW)
> +    IDREG_FIELD_START(ID_MMFR3_EL1, CMaintVA, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR3_EL1, CMaintVA)
> IDREG_END(ID_MMFR3_EL1)
> 
> IDREG_START(ID_MMFR4_EL1)
> -    IDREG_FIELD(ID_MMFR4_EL1, EVT, 28, 4)
> -    IDREG_FIELD(ID_MMFR4_EL1, CCIDX, 24, 4)
> -    IDREG_FIELD(ID_MMFR4_EL1, LSM, 20, 4)
> -    IDREG_FIELD(ID_MMFR4_EL1, HPDS, 16, 4)
> -    IDREG_FIELD(ID_MMFR4_EL1, CnP, 12, 4)
> -    IDREG_FIELD(ID_MMFR4_EL1, XNX, 8, 4)
> -    IDREG_FIELD(ID_MMFR4_EL1, AC2, 4, 4)
> -    IDREG_FIELD(ID_MMFR4_EL1, SpecSEI, 0, 4)
> +    IDREG_FIELD_START(ID_MMFR4_EL1, EVT, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR4_EL1, EVT)
> +    IDREG_FIELD_START(ID_MMFR4_EL1, CCIDX, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR4_EL1, CCIDX)
> +    IDREG_FIELD_START(ID_MMFR4_EL1, LSM, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR4_EL1, LSM)
> +    IDREG_FIELD_START(ID_MMFR4_EL1, HPDS, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_MMFR4_EL1, HPDS)
> +    IDREG_FIELD_START(ID_MMFR4_EL1, CnP, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR4_EL1, CnP)
> +    IDREG_FIELD_START(ID_MMFR4_EL1, XNX, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR4_EL1, XNX)
> +    IDREG_FIELD_START(ID_MMFR4_EL1, AC2, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR4_EL1, AC2)
> +    IDREG_FIELD_START(ID_MMFR4_EL1, SpecSEI, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR4_EL1, SpecSEI)
> IDREG_END(ID_MMFR4_EL1)
> 
> IDREG_START(ID_MMFR5_EL1)
> -    IDREG_FIELD(ID_MMFR5_EL1, nTLBPA, 4, 4)
> -    IDREG_FIELD(ID_MMFR5_EL1, ETS, 0, 4)
> +    IDREG_FIELD_START(ID_MMFR5_EL1, nTLBPA, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_MMFR5_EL1, nTLBPA)
> +    IDREG_FIELD_START(ID_MMFR5_EL1, ETS, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_MMFR5_EL1, ETS)
> IDREG_END(ID_MMFR5_EL1)
> 
> IDREG_START(ID_PFR0_EL1)
> -    IDREG_FIELD(ID_PFR0_EL1, RAS, 28, 4)
> -    IDREG_FIELD(ID_PFR0_EL1, DIT, 24, 4)
> -    IDREG_FIELD(ID_PFR0_EL1, AMU, 20, 4)
> -    IDREG_FIELD(ID_PFR0_EL1, CSV2, 16, 4)
> -    IDREG_FIELD(ID_PFR0_EL1, State3, 12, 4)
> -    IDREG_FIELD(ID_PFR0_EL1, State2, 8, 4)
> -    IDREG_FIELD(ID_PFR0_EL1, State1, 4, 4)
> -    IDREG_FIELD(ID_PFR0_EL1, State0, 0, 4)
> +    IDREG_FIELD_START(ID_PFR0_EL1, RAS, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_PFR0_EL1, RAS)
> +    IDREG_FIELD_START(ID_PFR0_EL1, DIT, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_PFR0_EL1, DIT)
> +    IDREG_FIELD_START(ID_PFR0_EL1, AMU, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_PFR0_EL1, AMU)
> +    IDREG_FIELD_START(ID_PFR0_EL1, CSV2, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_PFR0_EL1, CSV2)
> +    IDREG_FIELD_START(ID_PFR0_EL1, State3, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_PFR0_EL1, State3)
> +    IDREG_FIELD_START(ID_PFR0_EL1, State2, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_PFR0_EL1, State2)
> +    IDREG_FIELD_START(ID_PFR0_EL1, State1, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_PFR0_EL1, State1)
> +    IDREG_FIELD_START(ID_PFR0_EL1, State0, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_PFR0_EL1, State0)
> IDREG_END(ID_PFR0_EL1)
> 
> IDREG_START(ID_PFR1_EL1)
> -    IDREG_FIELD(ID_PFR1_EL1, GIC, 28, 4)
> -    IDREG_FIELD(ID_PFR1_EL1, Virt_frac, 24, 4)
> -    IDREG_FIELD(ID_PFR1_EL1, Sec_frac, 20, 4)
> -    IDREG_FIELD(ID_PFR1_EL1, GenTimer, 16, 4)
> -    IDREG_FIELD(ID_PFR1_EL1, Virtualization, 12, 4)
> -    IDREG_FIELD(ID_PFR1_EL1, MProgMod, 8, 4)
> -    IDREG_FIELD(ID_PFR1_EL1, Security, 4, 4)
> -    IDREG_FIELD(ID_PFR1_EL1, ProgMod, 0, 4)
> +    IDREG_FIELD_START(ID_PFR1_EL1, GIC, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(ID_PFR1_EL1, GIC)
> +    IDREG_FIELD_START(ID_PFR1_EL1, Virt_frac, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_PFR1_EL1, Virt_frac)
> +    IDREG_FIELD_START(ID_PFR1_EL1, Sec_frac, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_PFR1_EL1, Sec_frac)
> +    IDREG_FIELD_START(ID_PFR1_EL1, GenTimer, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_PFR1_EL1, GenTimer)
> +    IDREG_FIELD_START(ID_PFR1_EL1, Virtualization, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_PFR1_EL1, Virtualization)
> +    IDREG_FIELD_START(ID_PFR1_EL1, MProgMod, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_PFR1_EL1, MProgMod)
> +    IDREG_FIELD_START(ID_PFR1_EL1, Security, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(ID_PFR1_EL1, Security)
> +    IDREG_FIELD_START(ID_PFR1_EL1, ProgMod, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_PFR1_EL1, ProgMod)
> IDREG_END(ID_PFR1_EL1)
> 
> IDREG_START(ID_PFR2_EL1)
> -    IDREG_FIELD(ID_PFR2_EL1, RAS_frac, 8, 4)
> -    IDREG_FIELD(ID_PFR2_EL1, SSBS, 4, 4)
> -    IDREG_FIELD(ID_PFR2_EL1, CSV3, 0, 4)
> +    IDREG_FIELD_START(ID_PFR2_EL1, RAS_frac, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_PFR2_EL1, RAS_frac)
> +    IDREG_FIELD_START(ID_PFR2_EL1, SSBS, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_PFR2_EL1, SSBS)
> +    IDREG_FIELD_START(ID_PFR2_EL1, CSV3, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(ID_PFR2_EL1, CSV3)
> IDREG_END(ID_PFR2_EL1)
> 
> IDREG_START(MIDR_EL1)
> -    IDREG_FIELD(MIDR_EL1, Implementer, 24, 8)
> +    IDREG_FIELD_START(MIDR_EL1, Implementer, 24, 8)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(65)
> +        IDREG_FIELD_ARCH_VAL(66)
> +        IDREG_FIELD_ARCH_VAL(67)
> +        IDREG_FIELD_ARCH_VAL(68)
> +        IDREG_FIELD_ARCH_VAL(70)
> +        IDREG_FIELD_ARCH_VAL(73)
> +        IDREG_FIELD_ARCH_VAL(77)
> +        IDREG_FIELD_ARCH_VAL(78)
> +        IDREG_FIELD_ARCH_VAL(80)
> +        IDREG_FIELD_ARCH_VAL(81)
> +        IDREG_FIELD_ARCH_VAL(86)
> +        IDREG_FIELD_ARCH_VAL(105)
> +        IDREG_FIELD_ARCH_VAL(192)
> +    IDREG_FIELD_END(MIDR_EL1, Implementer)
>     IDREG_FIELD(MIDR_EL1, Variant, 20, 4)
> -    IDREG_FIELD(MIDR_EL1, Architecture, 16, 4)
> +    IDREG_FIELD_START(MIDR_EL1, Architecture, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +        IDREG_FIELD_ARCH_VAL(5)
> +        IDREG_FIELD_ARCH_VAL(6)
> +        IDREG_FIELD_ARCH_VAL(7)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(MIDR_EL1, Architecture)
>     IDREG_FIELD(MIDR_EL1, PartNum, 4, 12)
>     IDREG_FIELD(MIDR_EL1, Revision, 0, 4)
> IDREG_END(MIDR_EL1)
> 
> IDREG_START(MPIDR_EL1)
>     IDREG_FIELD(MPIDR_EL1, Aff3, 32, 8)
> -    IDREG_FIELD(MPIDR_EL1, U, 30, 1)
> -    IDREG_FIELD(MPIDR_EL1, MT, 24, 1)
> +    IDREG_FIELD_START(MPIDR_EL1, U, 30, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MPIDR_EL1, U)
> +    IDREG_FIELD_START(MPIDR_EL1, MT, 24, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MPIDR_EL1, MT)
>     IDREG_FIELD(MPIDR_EL1, Aff2, 16, 8)
>     IDREG_FIELD(MPIDR_EL1, Aff1, 8, 8)
>     IDREG_FIELD(MPIDR_EL1, Aff0, 0, 8)
> IDREG_END(MPIDR_EL1)
> 
> IDREG_START(MVFR0_EL1)
> -    IDREG_FIELD(MVFR0_EL1, FPRound, 28, 4)
> -    IDREG_FIELD(MVFR0_EL1, FPShVec, 24, 4)
> -    IDREG_FIELD(MVFR0_EL1, FPSqrt, 20, 4)
> -    IDREG_FIELD(MVFR0_EL1, FPDivide, 16, 4)
> -    IDREG_FIELD(MVFR0_EL1, FPTrap, 12, 4)
> -    IDREG_FIELD(MVFR0_EL1, FPDP, 8, 4)
> -    IDREG_FIELD(MVFR0_EL1, FPSP, 4, 4)
> -    IDREG_FIELD(MVFR0_EL1, SIMDReg, 0, 4)
> +    IDREG_FIELD_START(MVFR0_EL1, FPRound, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR0_EL1, FPRound)
> +    IDREG_FIELD_START(MVFR0_EL1, FPShVec, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR0_EL1, FPShVec)
> +    IDREG_FIELD_START(MVFR0_EL1, FPSqrt, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR0_EL1, FPSqrt)
> +    IDREG_FIELD_START(MVFR0_EL1, FPDivide, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR0_EL1, FPDivide)
> +    IDREG_FIELD_START(MVFR0_EL1, FPTrap, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR0_EL1, FPTrap)
> +    IDREG_FIELD_START(MVFR0_EL1, FPDP, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(MVFR0_EL1, FPDP)
> +    IDREG_FIELD_START(MVFR0_EL1, FPSP, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(MVFR0_EL1, FPSP)
> +    IDREG_FIELD_START(MVFR0_EL1, SIMDReg, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(MVFR0_EL1, SIMDReg)
> IDREG_END(MVFR0_EL1)
> 
> IDREG_START(MVFR1_EL1)
> -    IDREG_FIELD(MVFR1_EL1, SIMDFMAC, 28, 4)
> -    IDREG_FIELD(MVFR1_EL1, FPHP, 24, 4)
> -    IDREG_FIELD(MVFR1_EL1, SIMDHP, 20, 4)
> -    IDREG_FIELD(MVFR1_EL1, SIMDSP, 16, 4)
> -    IDREG_FIELD(MVFR1_EL1, SIMDInt, 12, 4)
> -    IDREG_FIELD(MVFR1_EL1, SIMDLS, 8, 4)
> -    IDREG_FIELD(MVFR1_EL1, FPDNaN, 4, 4)
> -    IDREG_FIELD(MVFR1_EL1, FPFtZ, 0, 4)
> +    IDREG_FIELD_START(MVFR1_EL1, SIMDFMAC, 28, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR1_EL1, SIMDFMAC)
> +    IDREG_FIELD_START(MVFR1_EL1, FPHP, 24, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(MVFR1_EL1, FPHP)
> +    IDREG_FIELD_START(MVFR1_EL1, SIMDHP, 20, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +    IDREG_FIELD_END(MVFR1_EL1, SIMDHP)
> +    IDREG_FIELD_START(MVFR1_EL1, SIMDSP, 16, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR1_EL1, SIMDSP)
> +    IDREG_FIELD_START(MVFR1_EL1, SIMDInt, 12, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR1_EL1, SIMDInt)
> +    IDREG_FIELD_START(MVFR1_EL1, SIMDLS, 8, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR1_EL1, SIMDLS)
> +    IDREG_FIELD_START(MVFR1_EL1, FPDNaN, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR1_EL1, FPDNaN)
> +    IDREG_FIELD_START(MVFR1_EL1, FPFtZ, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(MVFR1_EL1, FPFtZ)
> IDREG_END(MVFR1_EL1)
> 
> IDREG_START(MVFR2_EL1)
> -    IDREG_FIELD(MVFR2_EL1, FPMisc, 4, 4)
> -    IDREG_FIELD(MVFR2_EL1, SIMDMisc, 0, 4)
> +    IDREG_FIELD_START(MVFR2_EL1, FPMisc, 4, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +        IDREG_FIELD_ARCH_VAL(4)
> +    IDREG_FIELD_END(MVFR2_EL1, FPMisc)
> +    IDREG_FIELD_START(MVFR2_EL1, SIMDMisc, 0, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(MVFR2_EL1, SIMDMisc)
> IDREG_END(MVFR2_EL1)
> 
> IDREG_START(REVIDR_EL1)
> IDREG_END(REVIDR_EL1)
> 
> IDREG_START(SMIDR_EL1)
> -    IDREG_FIELD(SMIDR_EL1, NSMC, 56, 4)
> -    IDREG_FIELD(SMIDR_EL1, HIP, 52, 4)
> +    IDREG_FIELD_START(SMIDR_EL1, NSMC, 56, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(15)
> +    IDREG_FIELD_END(SMIDR_EL1, NSMC)
> +    IDREG_FIELD_START(SMIDR_EL1, HIP, 52, 4)
> +        IDREG_FIELD_ARCH_VAL(0)
> +    IDREG_FIELD_END(SMIDR_EL1, HIP)
>     IDREG_FIELD(SMIDR_EL1, Affinity2, 32, 20)
> -    IDREG_FIELD(SMIDR_EL1, Implementer, 24, 8)
> +    IDREG_FIELD_START(SMIDR_EL1, Implementer, 24, 8)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(65)
> +        IDREG_FIELD_ARCH_VAL(66)
> +        IDREG_FIELD_ARCH_VAL(67)
> +        IDREG_FIELD_ARCH_VAL(68)
> +        IDREG_FIELD_ARCH_VAL(70)
> +        IDREG_FIELD_ARCH_VAL(73)
> +        IDREG_FIELD_ARCH_VAL(77)
> +        IDREG_FIELD_ARCH_VAL(78)
> +        IDREG_FIELD_ARCH_VAL(80)
> +        IDREG_FIELD_ARCH_VAL(81)
> +        IDREG_FIELD_ARCH_VAL(86)
> +        IDREG_FIELD_ARCH_VAL(105)
> +        IDREG_FIELD_ARCH_VAL(192)
> +    IDREG_FIELD_END(SMIDR_EL1, Implementer)
>     IDREG_FIELD(SMIDR_EL1, Revision, 16, 8)
> -    IDREG_FIELD(SMIDR_EL1, SMPS, 15, 1)
> -    IDREG_FIELD(SMIDR_EL1, SH, 13, 2)
> +    IDREG_FIELD_START(SMIDR_EL1, SMPS, 15, 1)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +    IDREG_FIELD_END(SMIDR_EL1, SMPS)
> +    IDREG_FIELD_START(SMIDR_EL1, SH, 13, 2)
> +        IDREG_FIELD_ARCH_VAL(0)
> +        IDREG_FIELD_ARCH_VAL(1)
> +        IDREG_FIELD_ARCH_VAL(2)
> +        IDREG_FIELD_ARCH_VAL(3)
> +    IDREG_FIELD_END(SMIDR_EL1, SH)
>     IDREG_FIELD(SMIDR_EL1, Affinity, 0, 12)
> IDREG_END(SMIDR_EL1)
> 
> diff --git a/scripts/update-aarch64-cpu-sysreg-properties.py b/scripts/update-aarch64-cpu-sysreg-properties.py
> index 6f5edb88d2..e1d6c4afef 100644
> --- a/scripts/update-aarch64-cpu-sysreg-properties.py
> +++ b/scripts/update-aarch64-cpu-sysreg-properties.py
> @@ -9,7 +9,12 @@
> #
> # IDREG_START(REG)
> #    IDREG_FIELD(REG, FIELD, SHIFT, LENGTH)
> -# ...
> +#    or for fields with enum values
> +#    IDREG_FIELD_START(REG, FIELD, SHIFT, LENGTH)
> +#        IDREG_FIELD_ARCH_VAL(VALUE)
> +#        ../..
> +#    IDREG_FIELD_END(REG, FIELD)
> +#    ../..
Nit: trailing whitespace
> # IDREG_END(REG)
> #
> # Copyright (C) 2026 Red Hat, Inc.
> @@ -98,6 +103,51 @@ def collect_fields(item, bit_offset=0):
>     return fields
> 
> 
> +def extract_field_enums(field):
> +    enums = []
> +    if not isinstance(field, dict):
> +        return enums
> +
> +    value_obj = field.get("value")
> +    if not isinstance(value_obj, dict):
> +        return enums
> +
> +    constraints = value_obj.get("constraints")
> +    if not isinstance(constraints, dict):
> +        return enums
> +
> +    val_entries = constraints.get("values", [])
> +    if not isinstance(val_entries, list):
> +        return enums
> +
> +    for val_entry in val_entries:
> +        if not isinstance(val_entry, dict):
> +            continue
> +            
Nit: trailing whitespace
> +        if val_entry.get("_type") == "Values.Value":
> +            raw_val = val_entry.get("value")
> +            if raw_val is None:
> +                continue
> +                
Nit: trailing whitespace
> +            # some of the values have ' like "'0100'"
> +            raw_val_str = str(raw_val).strip().replace("'", "")
> +            
Nit: trailing whitespace ...
> +            try:
> +                # convert into bin 
> +                int_val = int(raw_val_str, 2)
> +            except ValueError:
> +                try:
> +                    # Fallback to dec if not bin
> +                    int_val = int(raw_val_str, 0)
> +                except ValueError:
> +                    continue
> +            
> +            enums.append({
> +                'value': int_val
> +            })
> +            
> +    return enums
> +
> def generate_sysreg_properties_from_registers_json(id_reg_names, raw_json_path):
>     with open(raw_json_path, 'r') as f:
>         register_data = json.load(f)
> @@ -128,16 +178,31 @@ def generate_sysreg_properties_from_registers_json(id_reg_names, raw_json_path):
>                     # Only keep the fields with the highest MSB
>                     # needed fir CCSIDR_EL1
>                     if name not in unique_fields or msb > unique_fields[name]['msb']:
> -                        unique_fields[name] = {'lsb': lsb, 'msb': msb, 'width': width}
> +                        # extract enum values if any
> +                        enums = extract_field_enums(val)
> +                        unique_fields[name] = {'lsb': lsb, 'msb': msb, 'width': width, 'enums': enums}
> 
>         # Sort decreasing lsbs
>         sorted_fields = sorted(unique_fields.items(),
>                                key=lambda x: x[1]['lsb'], reverse=True)
> 
>         for name, bits in sorted_fields:
> -            line = (f"    IDREG_FIELD({reg_name}, "
> -                    f"{name}, {bits['lsb']}, {bits['width']})\n")
> +            enums_list = bits.get('enums', [])
> +
> +            if enums_list:
> +               line = (f"    IDREG_FIELD_START({reg_name}, "
> +                       f"{name}, {bits['lsb']}, {bits['width']})\n")
> +            else:
> +               line = (f"    IDREG_FIELD({reg_name}, "
> +                       f"{name}, {bits['lsb']}, {bits['width']})\n")
>             final_output += line
> +            # add the enum value definition if any
> +            for enum_item in enums_list:
> +                final_output += (f"        IDREG_FIELD_ARCH_VAL({enum_item['value']})\n")
> +            if enums_list:
> +               line = (f"    IDREG_FIELD_END({reg_name}, {name})\n")
> +               final_output += line
> +     
>         final_output += f"IDREG_END({reg_name})\n"
>         final_output += "\n"
> 
> @@ -147,7 +212,11 @@ def generate_sysreg_properties_from_registers_json(id_reg_names, raw_json_path):
>         f.write("/* SPDX-License-Identifier: GPL-2.0-or-later */\n\n")
>         f.write("/* IDREG_START(REG) */\n")
>         f.write("/*     IDREG_FIELD(REG, FIELD, SHIFT, LENGTH) */\n")
> +        f.write("/*     or for fields with enum values */\n")
> +        f.write("/*     IDREG_FIELD_START(REG, FIELD, SHIFT, LENGTH) */\n")
> +        f.write("/*         IDREG_FIELD_ARCH_VAL(VALUE) */\n")
>         f.write("/* ... */\n")
> +        f.write("/*     IDREG_FIELD_END(REG, FIELD) */\n")
>         f.write("/* IDREG_END(REG) */\n\n")
>         f.write(final_output)
> 
> -- 
> 2.53.0
> 

Also I do not see any ValueRange handling..., Am I missing something here?

Warm Regards,
Khushit

[RFC PATCH v7 09/18] target/arm/cpu_idregs: generate tables for Arm64 ID registers and fields

[Eric Auger]

From: Shaju Abraham <shaju.abraham@nutanix.com>

Include cpu-idregs.h.inc multiple times with different definitions for the
X-macros. This will generate tables for all Arm64 ID registers and their
fields. Additionally, initialize the tables with all architecturally defined
values. These tables will be consumed by the property layer in future
patches.

Co-authored-by: Khushit Shah <khushit.shah@nutanix.com>
Signed-off-by: Shaju Abraham <shaju.abraham@nutanix.com>
Signed-off-by: Eric Auger <eric.auger@redhat.com>

---

v5 -> v6
- restored support of enum values
---
 target/arm/cpu-idregs.c | 96 +++++++++++++++++++++++++++++++++++++++++
 target/arm/meson.build  |  1 +
 2 files changed, 97 insertions(+)
 create mode 100644 target/arm/cpu-idregs.c

diff --git a/target/arm/cpu-idregs.c b/target/arm/cpu-idregs.c
new file mode 100644
index 0000000000..c41d0ab0c4
--- /dev/null
+++ b/target/arm/cpu-idregs.c
@@ -0,0 +1,96 @@
+/*
+ *   ARM ID register field table.
+ *
+ *   Builds the per-id-register field descriptor arrays and the global
+ *   arm_idregs[] table.
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#include "qemu/osdep.h"
+#include "qemu/error-report.h"
+#include "qapi/error.h"
+#include "cpu.h"
+#include "cpu-idregs.h"
+
+/*
+ * Generate an array of architecturely defined values for each field
+ * associated with enum values
+ */
+
+#define IDREG_START(reg)
+#define IDREG_END(reg)
+#define IDREG_FIELD(reg, field, shift, length)
+#define IDREG_FIELD_START(reg, field, shift, length) \
+    static const ArmIdRegArchVal reg##_##field##_arch_vals[] = {
+#define IDREG_FIELD_ARCH_VAL(v) { (v), "" },
+#define IDREG_FIELD_END(reg, field) \
+    };
+
+#include "cpu-idregs.h.inc"
+
+#undef IDREG_START
+#undef IDREG_END
+#undef IDREG_FIELD
+#undef IDREG_FIELD_START
+#undef IDREG_FIELD_END
+#undef IDREG_FIELD_ARCH_VAL
+
+/* generate an array of per-register ArmIdRegField[] descriptors */
+
+#define IDREG_START(reg) \
+    static ARM64SysRegField reg##_fields[] = {
+
+#define IDREG_END(reg) \
+    };
+
+#define IDREG_FIELD_START(reg, field, _shift, _length)  \
+    {                                                                 \
+        .name = #field, \
+        .index = reg##_IDX, \
+        .shift = (_shift),                                            \
+        .length = (_length),                                          \
+        .arch_vals = (ArmIdRegArchVal *)reg##_##field##_arch_vals,    \
+        .arch_vals_count = ARRAY_SIZE(reg##_##field##_arch_vals),     \
+    },
+
+#define IDREG_FIELD(reg, field, _shift, _length) \
+    { \
+        .name = #field, \
+        .index = reg##_IDX, \
+        .shift = (_shift), \
+        .length = (_length), \
+    },
+
+#define IDREG_FIELD_ARCH_VAL(v)
+
+#define IDREG_FIELD_END(reg, field)
+
+#include "cpu-idregs.h.inc"
+
+#undef IDREG_START
+#undef IDREG_END
+#undef IDREG_FIELD
+#undef IDREG_FIELD_START
+#undef IDREG_FIELD_END
+#undef IDREG_FIELD_ARCH_VAL
+
+/* generate an array of top level ID registers */
+
+#define IDREG_END(reg)
+#define IDREG_FIELD(reg, field, shift, length)
+#define IDREG_FIELD_START(reg, field, shift, length)
+#define IDREG_FIELD_ARCH_VAL(v)
+#define IDREG_FIELD_END(reg, field)
+
+#define IDREG_START(reg) \
+    [reg##_IDX] = { \
+        .name = #reg, \
+        .index = reg##_IDX, \
+        .fields = reg##_fields, \
+        .fields_count = ARRAY_SIZE(reg##_fields), \
+    },
+
+ARM64SysReg arm64_id_regs[NUM_ID_IDX] = {
+#include "cpu-idregs.h.inc"
+};
+
diff --git a/target/arm/meson.build b/target/arm/meson.build
index 4412fde065..ed8535192c 100644
--- a/target/arm/meson.build
+++ b/target/arm/meson.build
@@ -30,6 +30,7 @@ arm_common_user_system_ss.add(when: 'TARGET_AARCH64', if_true: files(
 
 arm_common_system_ss.add(files(
   'arm-qmp-cmds.c',
+  'cpu-idregs.c',
 ))
 arm_system_ss.add(when: 'CONFIG_KVM', if_true: files('hyp_gdbstub.c', 'kvm.c'))
 arm_system_ss.add(when: 'CONFIG_HVF', if_true: files('hyp_gdbstub.c'))
-- 
2.53.0

Re: [RFC PATCH v7 09/18] target/arm/cpu_idregs: generate tables for Arm64 ID registers and fields

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> From: Shaju Abraham <shaju.abraham@nutanix.com>
> 
> Include cpu-idregs.h.inc multiple times with different definitions for the
> X-macros. This will generate tables for all Arm64 ID registers and their
> fields. Additionally, initialize the tables with all architecturally defined
> values. These tables will be consumed by the property layer in future
> patches.
> 
> Co-authored-by: Khushit Shah <khushit.shah@nutanix.com>
Signed-off-by: Khushit Shah <khushit.shah@nutanix.com>
> Signed-off-by: Shaju Abraham <shaju.abraham@nutanix.com>
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> 
> ---
> 
> v5 -> v6
> - restored support of enum values
> ---
> target/arm/cpu-idregs.c | 96 +++++++++++++++++++++++++++++++++++++++++
> target/arm/meson.build  |  1 +
> 2 files changed, 97 insertions(+)
> create mode 100644 target/arm/cpu-idregs.c
> 
> diff --git a/target/arm/cpu-idregs.c b/target/arm/cpu-idregs.c
> new file mode 100644
> index 0000000000..c41d0ab0c4
> --- /dev/null
> +++ b/target/arm/cpu-idregs.c
> @@ -0,0 +1,96 @@
> +/*
> + *   ARM ID register field table.
> + *
> + *   Builds the per-id-register field descriptor arrays and the global
> + *   arm_idregs[] table.
> + *
> + *  SPDX-License-Identifier: GPL-2.0-or-later
> + */
> +#include "qemu/osdep.h"
> +#include "qemu/error-report.h"
> +#include "qapi/error.h"
> +#include "cpu.h"
> +#include "cpu-idregs.h"
> +
> +/*
> + * Generate an array of architecturely defined values for each field
> + * associated with enum values
> + */
> +
> +#define IDREG_START(reg)
> +#define IDREG_END(reg)
> +#define IDREG_FIELD(reg, field, shift, length)
> +#define IDREG_FIELD_START(reg, field, shift, length) \
> +    static const ArmIdRegArchVal reg##_##field##_arch_vals[] = {
> +#define IDREG_FIELD_ARCH_VAL(v) { (v), "" },
> +#define IDREG_FIELD_END(reg, field) \
> +    };
> +
> +#include "cpu-idregs.h.inc"
> +
> +#undef IDREG_START
> +#undef IDREG_END
> +#undef IDREG_FIELD
> +#undef IDREG_FIELD_START
> +#undef IDREG_FIELD_END
> +#undef IDREG_FIELD_ARCH_VAL
> +
> +/* generate an array of per-register ArmIdRegField[] descriptors */
> +
> +#define IDREG_START(reg) \
> +    static ARM64SysRegField reg##_fields[] = {
> +
> +#define IDREG_END(reg) \
> +    };
> +
> +#define IDREG_FIELD_START(reg, field, _shift, _length)  \
> +    {                                                                 \
> +        .name = #field, \
> +        .index = reg##_IDX, \
> +        .shift = (_shift),                                            \
> +        .length = (_length),                                          \
> +        .arch_vals = (ArmIdRegArchVal *)reg##_##field##_arch_vals,    \
> +        .arch_vals_count = ARRAY_SIZE(reg##_##field##_arch_vals),     \
> +    },
> +
> +#define IDREG_FIELD(reg, field, _shift, _length) \
> +    { \
> +        .name = #field, \
> +        .index = reg##_IDX, \
> +        .shift = (_shift), \
> +        .length = (_length), \
> +    },
> +
> +#define IDREG_FIELD_ARCH_VAL(v)
> +
> +#define IDREG_FIELD_END(reg, field)
> +
> +#include "cpu-idregs.h.inc"
> +
> +#undef IDREG_START
> +#undef IDREG_END
> +#undef IDREG_FIELD
> +#undef IDREG_FIELD_START
> +#undef IDREG_FIELD_END
> +#undef IDREG_FIELD_ARCH_VAL
> +
> +/* generate an array of top level ID registers */
> +
> +#define IDREG_END(reg)
> +#define IDREG_FIELD(reg, field, shift, length)
> +#define IDREG_FIELD_START(reg, field, shift, length)
> +#define IDREG_FIELD_ARCH_VAL(v)
> +#define IDREG_FIELD_END(reg, field)
> +
> +#define IDREG_START(reg) \
> +    [reg##_IDX] = { \
> +        .name = #reg, \
> +        .index = reg##_IDX, \
> +        .fields = reg##_fields, \
> +        .fields_count = ARRAY_SIZE(reg##_fields), \
> +    },
> +
> +ARM64SysReg arm64_id_regs[NUM_ID_IDX] = {
> +#include "cpu-idregs.h.inc"
> +};
> +
> diff --git a/target/arm/meson.build b/target/arm/meson.build
> index 4412fde065..ed8535192c 100644
> --- a/target/arm/meson.build
> +++ b/target/arm/meson.build
> @@ -30,6 +30,7 @@ arm_common_user_system_ss.add(when: 'TARGET_AARCH64', if_true: files(
> 
> arm_common_system_ss.add(files(
>   'arm-qmp-cmds.c',
> +  'cpu-idregs.c',
> ))
> arm_system_ss.add(when: 'CONFIG_KVM', if_true: files('hyp_gdbstub.c', 'kvm.c'))
> arm_system_ss.add(when: 'CONFIG_HVF', if_true: files('hyp_gdbstub.c'))
> -- 
> 2.53.0
> 

[RFC PATCH v7 10/18] target/arm/kvm: Retrieve writable ID reg map

[Eric Auger]

From: Cornelia Huck <cohuck@redhat.com>

Add an helper to retrieve the writable id reg bitmask.

then retrieve the writable_map array and dispatch it in the writable_map
fields of arm64_id_regs[] elements.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

---

v5 -> v6
- use arm64_id_regs[].writable_map
- squashed 2 commits (helper + user)
- removed stub
---
 target/arm/kvm.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index d40a6a9859..d270f9870e 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -28,6 +28,7 @@
 #include "kvm_arm.h"
 #include "cpu.h"
 #include "cpu-sysregs.h"
+#include "cpu-idregs.h"
 #include "trace.h"
 #include "internals.h"
 #include "hw/pci/pci.h"
@@ -51,6 +52,7 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
 static bool cap_has_mp_state;
 static bool cap_has_inject_serror_esr;
 static bool cap_has_inject_ext_dabt;
+static bool writable_map_dispatched;
 
 /**
  * ARMHostCPUFeatures: information about the host CPU (identified
@@ -273,6 +275,21 @@ static uint32_t kvm_arm_sve_get_vls(int fd)
     return vls[0] & MAKE_64BIT_MASK(0, ARM_MAX_VQ);
 }
 
+static int kvm_feature_idx_to_idregs_idx(int kidx)
+{
+    int op1, crm, op2;
+    ARMSysRegs sysreg;
+
+    op1 = kidx / 64;
+    if (op1 == 2) {
+        op1 = 3;
+    }
+    crm = (kidx % 64) / 8;
+    op2 = kidx % 8;
+    sysreg = ENCODE_ID_REG(3, op1, 0, crm, op2);
+    return get_sysreg_idx(sysreg);
+}
+
 static void kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
 {
     /* Identify the feature bits corresponding to the host CPU, and
@@ -480,9 +497,53 @@ static void kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
     ahcf->features = features;
 }
 
+static int kvm_arm_get_writable_id_regs(uint64_t *idregmap)
+{
+    int cap_writable_id_regs;
+    struct reg_mask_range range = {
+        .range = KVM_ARM_FEATURE_ID_RANGE,
+        .reserved = {0},
+        .addr = (uint64_t)idregmap,
+    };
+
+    cap_writable_id_regs =
+        kvm_check_extension(kvm_state, KVM_CAP_ARM_SUPPORTED_REG_MASK_RANGES);
+
+    if (!cap_writable_id_regs ||
+        !(cap_writable_id_regs & (1 << KVM_ARM_FEATURE_ID_RANGE))) {
+        return -ENOSYS;
+    }
+
+    if (kvm_vm_ioctl(kvm_state, KVM_ARM_GET_REG_WRITABLE_MASKS, &range)) {
+        return -errno;
+    }
+    return 0;
+}
+
 void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu)
 {
     CPUARMState *env = &cpu->env;
+    uint64_t *writable_map;
+
+    writable_map = g_new(uint64_t, KVM_ARM_FEATURE_ID_RANGE_SIZE);
+
+    if (!writable_map_dispatched &&
+        !kvm_arm_get_writable_id_regs(writable_map)) {
+        for (int i = 0; i < KVM_ARM_FEATURE_ID_RANGE_SIZE; i++) {
+            uint64_t mask = writable_map[i];
+
+            if (mask) {
+                int idx = kvm_feature_idx_to_idregs_idx(i);
+
+                if (idx < 0 || idx > ARRAY_SIZE(arm64_id_regs)) {
+                    continue;
+                }
+                arm64_id_regs[idx].writable_mask = mask;
+            }
+        }
+        writable_map_dispatched = true;
+    }
+    g_free(writable_map);
 
     if (!arm_host_cpu_features.dtb_compatible) {
         kvm_arm_get_host_cpu_features(&arm_host_cpu_features);
-- 
2.53.0

Re: [RFC PATCH v7 10/18] target/arm/kvm: Retrieve writable ID reg map

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> From: Cornelia Huck <cohuck@redhat.com>
> 
> Add an helper to retrieve the writable id reg bitmask.
> 
> then retrieve the writable_map array and dispatch it in the writable_map
> fields of arm64_id_regs[] elements.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
> 
> ---
> 
> v5 -> v6
> - use arm64_id_regs[].writable_map
> - squashed 2 commits (helper + user)
> - removed stub
> ---
> target/arm/kvm.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 61 insertions(+)
> 
> diff --git a/target/arm/kvm.c b/target/arm/kvm.c
> index d40a6a9859..d270f9870e 100644
> --- a/target/arm/kvm.c
> +++ b/target/arm/kvm.c
> @@ -28,6 +28,7 @@
> #include "kvm_arm.h"
> #include "cpu.h"
> #include "cpu-sysregs.h"
> +#include "cpu-idregs.h"
> #include "trace.h"
> #include "internals.h"
> #include "hw/pci/pci.h"
> @@ -51,6 +52,7 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
> static bool cap_has_mp_state;
> static bool cap_has_inject_serror_esr;
> static bool cap_has_inject_ext_dabt;
> +static bool writable_map_dispatched;
> 
> /**
>  * ARMHostCPUFeatures: information about the host CPU (identified
> @@ -273,6 +275,21 @@ static uint32_t kvm_arm_sve_get_vls(int fd)
>     return vls[0] & MAKE_64BIT_MASK(0, ARM_MAX_VQ);
> }
> 
> +static int kvm_feature_idx_to_idregs_idx(int kidx)
> +{
> +    int op1, crm, op2;
> +    ARMSysRegs sysreg;
> +
> +    op1 = kidx / 64;
> +    if (op1 == 2) {
> +        op1 = 3;
> +    }
> +    crm = (kidx % 64) / 8;
> +    op2 = kidx % 8;
> +    sysreg = ENCODE_ID_REG(3, op1, 0, crm, op2);
> +    return get_sysreg_idx(sysreg);
> +}
> +
> static void kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
> {
>     /* Identify the feature bits corresponding to the host CPU, and
> @@ -480,9 +497,53 @@ static void kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
>     ahcf->features = features;
> }
> 
> +static int kvm_arm_get_writable_id_regs(uint64_t *idregmap)
> +{
This should probably be gated with kvm_enabled()?

qtest-aarch64/device-introspect-test fails on my aarch64 devvm, which does not
have KVM.

> +    int cap_writable_id_regs;
> +    struct reg_mask_range range = {
> +        .range = KVM_ARM_FEATURE_ID_RANGE,
> +        .reserved = {0},
> +        .addr = (uint64_t)idregmap,
> +    };
> +
> +    cap_writable_id_regs =
> +        kvm_check_extension(kvm_state, KVM_CAP_ARM_SUPPORTED_REG_MASK_RANGES);
> +
> +    if (!cap_writable_id_regs ||
> +        !(cap_writable_id_regs & (1 << KVM_ARM_FEATURE_ID_RANGE))) {
> +        return -ENOSYS;
> +    }
> +
> +    if (kvm_vm_ioctl(kvm_state, KVM_ARM_GET_REG_WRITABLE_MASKS, &range)) {
> +        return -errno;
> +    }
> +    return 0;
> +}
> +
> void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu)
> {
>     CPUARMState *env = &cpu->env;
> +    uint64_t *writable_map;
> +
> +    writable_map = g_new(uint64_t, KVM_ARM_FEATURE_ID_RANGE_SIZE);
> +
> +    if (!writable_map_dispatched &&
> +        !kvm_arm_get_writable_id_regs(writable_map)) {
> +        for (int i = 0; i < KVM_ARM_FEATURE_ID_RANGE_SIZE; i++) {
> +            uint64_t mask = writable_map[i];
> +
> +            if (mask) {
> +                int idx = kvm_feature_idx_to_idregs_idx(i);
> +
> +                if (idx < 0 || idx > ARRAY_SIZE(arm64_id_regs)) {
> +                    continue;
> +                }
> +                arm64_id_regs[idx].writable_mask = mask;
> +            }
> +        }
> +        writable_map_dispatched = true;
> +    }
> +    g_free(writable_map);
> 
>     if (!arm_host_cpu_features.dtb_compatible) {
>         kvm_arm_get_host_cpu_features(&arm_host_cpu_features);
> -- 
> 2.53.0
> 

Re: [RFC PATCH v7 10/18] target/arm/kvm: Retrieve writable ID reg map

[Eric Auger]

Hi Khushit,
On 8/6/26 6:52 AM, Khushit Shah wrote:
>
>> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
>>
>> !-------------------------------------------------------------------|
>>  CAUTION: External Email
>>
>> |-------------------------------------------------------------------!
>>
>> From: Cornelia Huck <cohuck@redhat.com>
>>
>> Add an helper to retrieve the writable id reg bitmask.
>>
>> then retrieve the writable_map array and dispatch it in the writable_map
>> fields of arm64_id_regs[] elements.
>>
>> Signed-off-by: Eric Auger <eric.auger@redhat.com>
>> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
>>
>> ---
>>
>> v5 -> v6
>> - use arm64_id_regs[].writable_map
>> - squashed 2 commits (helper + user)
>> - removed stub
>> ---
>> target/arm/kvm.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++
>> 1 file changed, 61 insertions(+)
>>
>> diff --git a/target/arm/kvm.c b/target/arm/kvm.c
>> index d40a6a9859..d270f9870e 100644
>> --- a/target/arm/kvm.c
>> +++ b/target/arm/kvm.c
>> @@ -28,6 +28,7 @@
>> #include "kvm_arm.h"
>> #include "cpu.h"
>> #include "cpu-sysregs.h"
>> +#include "cpu-idregs.h"
>> #include "trace.h"
>> #include "internals.h"
>> #include "hw/pci/pci.h"
>> @@ -51,6 +52,7 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
>> static bool cap_has_mp_state;
>> static bool cap_has_inject_serror_esr;
>> static bool cap_has_inject_ext_dabt;
>> +static bool writable_map_dispatched;
>>
>> /**
>>  * ARMHostCPUFeatures: information about the host CPU (identified
>> @@ -273,6 +275,21 @@ static uint32_t kvm_arm_sve_get_vls(int fd)
>>     return vls[0] & MAKE_64BIT_MASK(0, ARM_MAX_VQ);
>> }
>>
>> +static int kvm_feature_idx_to_idregs_idx(int kidx)
>> +{
>> +    int op1, crm, op2;
>> +    ARMSysRegs sysreg;
>> +
>> +    op1 = kidx / 64;
>> +    if (op1 == 2) {
>> +        op1 = 3;
>> +    }
>> +    crm = (kidx % 64) / 8;
>> +    op2 = kidx % 8;
>> +    sysreg = ENCODE_ID_REG(3, op1, 0, crm, op2);
>> +    return get_sysreg_idx(sysreg);
>> +}
>> +
>> static void kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
>> {
>>     /* Identify the feature bits corresponding to the host CPU, and
>> @@ -480,9 +497,53 @@ static void kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
>>     ahcf->features = features;
>> }
>>
>> +static int kvm_arm_get_writable_id_regs(uint64_t *idregmap)
>> +{
> This should probably be gated with kvm_enabled()?
>
> qtest-aarch64/device-introspect-test fails on my aarch64 devvm, which does not
> have KVM.
Thanks for the report.

I will fix that in next respin

Eric
>
>> +    int cap_writable_id_regs;
>> +    struct reg_mask_range range = {
>> +        .range = KVM_ARM_FEATURE_ID_RANGE,
>> +        .reserved = {0},
>> +        .addr = (uint64_t)idregmap,
>> +    };
>> +
>> +    cap_writable_id_regs =
>> +        kvm_check_extension(kvm_state, KVM_CAP_ARM_SUPPORTED_REG_MASK_RANGES);
>> +
>> +    if (!cap_writable_id_regs ||
>> +        !(cap_writable_id_regs & (1 << KVM_ARM_FEATURE_ID_RANGE))) {
>> +        return -ENOSYS;
>> +    }
>> +
>> +    if (kvm_vm_ioctl(kvm_state, KVM_ARM_GET_REG_WRITABLE_MASKS, &range)) {
>> +        return -errno;
>> +    }
>> +    return 0;
>> +}
>> +
>> void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu)
>> {
>>     CPUARMState *env = &cpu->env;
>> +    uint64_t *writable_map;
>> +
>> +    writable_map = g_new(uint64_t, KVM_ARM_FEATURE_ID_RANGE_SIZE);
>> +
>> +    if (!writable_map_dispatched &&
>> +        !kvm_arm_get_writable_id_regs(writable_map)) {
>> +        for (int i = 0; i < KVM_ARM_FEATURE_ID_RANGE_SIZE; i++) {
>> +            uint64_t mask = writable_map[i];
>> +
>> +            if (mask) {
>> +                int idx = kvm_feature_idx_to_idregs_idx(i);
>> +
>> +                if (idx < 0 || idx > ARRAY_SIZE(arm64_id_regs)) {
>> +                    continue;
>> +                }
>> +                arm64_id_regs[idx].writable_mask = mask;
>> +            }
>> +        }
>> +        writable_map_dispatched = true;
>> +    }
>> +    g_free(writable_map);
>>
>>     if (!arm_host_cpu_features.dtb_compatible) {
>>         kvm_arm_get_host_cpu_features(&arm_host_cpu_features);
>> -- 
>> 2.53.0
>>

[RFC PATCH v7 11/18] arm/kvm: Initialize all writable ID registers from host

[Eric Auger]

We want to allow overwriting writable fields of some ID registers.
However currently some of them are never touched, neither read nor
w. Examples are CLIDR_EL1, CTR_EL0, REVIDR_EL1, MIDR_EL1.

We want to initialize them from the host value, allow overwrite
and write back for kvm afterwards. This patch implements the
initialization.

Introduce a new get_host_cpu_idregs() helper that gets the host
values for all writable ID regs and store them in isar.idregs[].

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

---

v6 -> v7
- remove vcpu from prototypes (Khushit)

v5 -> v6
- do not check writable_map anymore
---
 target/arm/kvm.c        | 96 ++++++++++++++++++++++++++++++++++++++++-
 target/arm/trace-events |  2 +
 2 files changed, 96 insertions(+), 2 deletions(-)

diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index d270f9870e..4f9b0a559d 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -43,6 +43,7 @@
 #include "hw/acpi/ghes.h"
 #include "target/arm/gtimer.h"
 #include "migration/blocker.h"
+#include "cpu-idregs.h"
 
 const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
     KVM_CAP_INFO(DEVICE_CTRL),
@@ -290,7 +291,44 @@ static int kvm_feature_idx_to_idregs_idx(int kidx)
     return get_sysreg_idx(sysreg);
 }
 
-static void kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
+/*
+ * get_host_cpu_idregs: Read all the writable ID reg host values
+ *
+ * Need to be called once the writable mask has been populated
+ * Note we may want to read all the known id regs but some of them are not
+ * writable and return an error, hence the choice of reading only those which
+ * are writable. Those are also readable!
+ */
+static int get_host_cpu_idregs(int fd, ARMHostCPUFeatures *ahcf)
+{
+    int err = 0;
+    int i;
+
+    for (i = 0; i < NUM_ID_IDX; i++) {
+        ARM64SysReg *sysregdesc = &arm64_id_regs[i];
+        ARMSysRegs sysreg = id_register_sysreg[i];
+        uint64_t *reg;
+        int ret;
+
+        if (!sysregdesc->writable_mask) {
+            continue;
+        }
+
+        reg = &ahcf->isar.idregs[i];
+        ret = read_sys_reg64(fd, reg, idregs_sysreg_to_kvm_reg(sysreg));
+        trace_get_host_cpu_idregs(sysregdesc->name, *reg);
+        if (ret) {
+            error_report("%s error reading value of host %s register (%m)",
+                         __func__, sysregdesc->name);
+
+            err = ret;
+        }
+    }
+    return err;
+}
+
+static void
+kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
 {
     /* Identify the feature bits corresponding to the host CPU, and
      * fill out the ARMHostCPUClass fields accordingly. To do this
@@ -376,6 +414,16 @@ static void kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
         SET_IDREG(&ahcf->isar, ID_AA64PFR0, 0x00000011); /* EL1&0, AArch64 only */
         err = 0;
     } else {
+        /* Make sure all writable ID reg values are initialized */
+        err |= get_host_cpu_idregs(fd, ahcf);
+
+        /*
+         * temporarily override the CLIDR_EL1 value since some host values
+         * trigger "Unified type is not implemented at level n" error in
+         * fdt_add_cpu_nodes()
+         */
+        SET_IDREG(&ahcf->isar, CLIDR, 0x0);
+
         err |= get_host_cpu_reg(fd, ahcf, ID_AA64PFR1_EL1_IDX);
         err |= get_host_cpu_reg(fd, ahcf, ID_AA64PFR2_EL1_IDX);
         err |= get_host_cpu_reg(fd, ahcf, ID_AA64SMFR0_EL1_IDX);
@@ -1161,6 +1209,34 @@ bool kvm_arm_cpu_post_load(ARMCPU *cpu)
     return true;
 }
 
+/*
+ * Copy writable ID regs from isar.idregs[] to cpreg_list
+ * in case their value differs from the original init cpreg value
+ */
+static void kvm_arm_writable_idregs_to_cpreg_list(ARMCPU *cpu)
+{
+    for (int i = 0; i < NUM_ID_IDX; i++) {
+        ARM64SysReg *sysregdesc = &arm64_id_regs[i];
+        ARMSysRegs sysreg = id_register_sysreg[i];
+        uint64_t previous, new;
+        uint64_t *cpreg;
+
+        if (!sysregdesc->writable_mask) {
+            continue;
+        }
+
+        cpreg = kvm_arm_get_cpreg_ptr(cpu, idregs_sysreg_to_kvm_reg(sysreg));
+        previous = *cpreg;
+        new = cpu->isar.idregs[i];
+
+        if (previous != new) {
+            *cpreg = new;
+            trace_kvm_arm_writable_idregs_to_cpreg_list(sysregdesc->name,
+                                                        previous, new);
+         }
+    }
+}
+
 void kvm_arm_reset_vcpu(ARMCPU *cpu)
 {
     int ret;
@@ -2115,7 +2191,23 @@ int kvm_arch_init_vcpu(CPUState *cs)
     }
     cpu->mp_affinity = mpidr & ARM64_AFFINITY_MASK;
 
-    return kvm_arm_init_cpreg_list(cpu);
+    ret = kvm_arm_init_cpreg_list(cpu);
+    if (ret) {
+        return ret;
+    }
+    /* overwrite writable ID regs with their updated property values */
+    kvm_arm_writable_idregs_to_cpreg_list(cpu);
+    ret = write_list_to_kvmstate(cpu, KVM_PUT_FULL_STATE);
+    if (!ret) {
+        return -1;
+    }
+    /*
+     * modified values may have changed the visibility of some regs,
+     * reinitialize the cpreg_list accordingly
+     */
+     ret = kvm_arm_init_cpreg_list(cpu);
+
+    return ret;
 }
 
 int kvm_arch_destroy_vcpu(CPUState *cs)
diff --git a/target/arm/trace-events b/target/arm/trace-events
index 8502fb3265..c25d2a1191 100644
--- a/target/arm/trace-events
+++ b/target/arm/trace-events
@@ -13,6 +13,8 @@ arm_gt_update_irq(int timer, int irqstate) "gt_update_irq: timer %d irqstate %d"
 
 # kvm.c
 kvm_arm_fixup_msi_route(uint64_t iova, uint64_t gpa) "MSI iova = 0x%"PRIx64" is translated into 0x%"PRIx64
+get_host_cpu_idregs(const char *name, uint64_t value) "scratch vcpu host value for %s is 0x%"PRIx64
+kvm_arm_writable_idregs_to_cpreg_list(const char *name, uint64_t previous, uint64_t new) "%s overwrite default 0x%"PRIx64" with 0x%"PRIx64
 
 # cpu.c
 arm_cpu_reset(uint64_t mp_aff) "cpu %" PRIu64
-- 
2.53.0

Re: [RFC PATCH v7 11/18] arm/kvm: Initialize all writable ID registers from host

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> We want to allow overwriting writable fields of some ID registers.
> However currently some of them are never touched, neither read nor
> w. Examples are CLIDR_EL1, CTR_EL0, REVIDR_EL1, MIDR_EL1.
> 
> We want to initialize them from the host value, allow overwrite
> and write back for kvm afterwards. This patch implements the
> initialization.
> 
> Introduce a new get_host_cpu_idregs() helper that gets the host
> values for all writable ID regs and store them in isar.idregs[].
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
> 
> ---
> 
> v6 -> v7
> - remove vcpu from prototypes (Khushit)
> 
> v5 -> v6
> - do not check writable_map anymore
> ---
> target/arm/kvm.c        | 96 ++++++++++++++++++++++++++++++++++++++++-
> target/arm/trace-events |  2 +
> 2 files changed, 96 insertions(+), 2 deletions(-)
> 
> diff --git a/target/arm/kvm.c b/target/arm/kvm.c
> index d270f9870e..4f9b0a559d 100644
> --- a/target/arm/kvm.c
> +++ b/target/arm/kvm.c
> @@ -43,6 +43,7 @@
> #include "hw/acpi/ghes.h"
> #include "target/arm/gtimer.h"
> #include "migration/blocker.h"
> +#include "cpu-idregs.h"
> 
> const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
>     KVM_CAP_INFO(DEVICE_CTRL),
> @@ -290,7 +291,44 @@ static int kvm_feature_idx_to_idregs_idx(int kidx)
>     return get_sysreg_idx(sysreg);
> }
> 
> -static void kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
> +/*
> + * get_host_cpu_idregs: Read all the writable ID reg host values
> + *
> + * Need to be called once the writable mask has been populated
> + * Note we may want to read all the known id regs but some of them are not
> + * writable and return an error, hence the choice of reading only those which
> + * are writable. Those are also readable!
> + */
> +static int get_host_cpu_idregs(int fd, ARMHostCPUFeatures *ahcf)
> +{
> +    int err = 0;
> +    int i;
> +
> +    for (i = 0; i < NUM_ID_IDX; i++) {
> +        ARM64SysReg *sysregdesc = &arm64_id_regs[i];
> +        ARMSysRegs sysreg = id_register_sysreg[i];
> +        uint64_t *reg;
> +        int ret;
> +
> +        if (!sysregdesc->writable_mask) {
> +            continue;
> +        }
> +
> +        reg = &ahcf->isar.idregs[i];
> +        ret = read_sys_reg64(fd, reg, idregs_sysreg_to_kvm_reg(sysreg));
> +        trace_get_host_cpu_idregs(sysregdesc->name, *reg);
> +        if (ret) {
> +            error_report("%s error reading value of host %s register (%m)",
> +                         __func__, sysregdesc->name);
> +
> +            err = ret;
> +        }
> +    }
> +    return err;
> +}
> +
> +static void
> +kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
> {
>     /* Identify the feature bits corresponding to the host CPU, and
>      * fill out the ARMHostCPUClass fields accordingly. To do this
> @@ -376,6 +414,16 @@ static void kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
>         SET_IDREG(&ahcf->isar, ID_AA64PFR0, 0x00000011); /* EL1&0, AArch64 only */
>         err = 0;
>     } else {
> +        /* Make sure all writable ID reg values are initialized */
> +        err |= get_host_cpu_idregs(fd, ahcf);
> +
> +        /*
> +         * temporarily override the CLIDR_EL1 value since some host values
> +         * trigger "Unified type is not implemented at level n" error in
> +         * fdt_add_cpu_nodes()
> +         */
> +        SET_IDREG(&ahcf->isar, CLIDR, 0x0);
> +
>         err |= get_host_cpu_reg(fd, ahcf, ID_AA64PFR1_EL1_IDX);
>         err |= get_host_cpu_reg(fd, ahcf, ID_AA64PFR2_EL1_IDX);
>         err |= get_host_cpu_reg(fd, ahcf, ID_AA64SMFR0_EL1_IDX);
> @@ -1161,6 +1209,34 @@ bool kvm_arm_cpu_post_load(ARMCPU *cpu)
>     return true;
> }
> 
> +/*
> + * Copy writable ID regs from isar.idregs[] to cpreg_list
> + * in case their value differs from the original init cpreg value
> + */
> +static void kvm_arm_writable_idregs_to_cpreg_list(ARMCPU *cpu)
> +{
> +    for (int i = 0; i < NUM_ID_IDX; i++) {
> +        ARM64SysReg *sysregdesc = &arm64_id_regs[i];
> +        ARMSysRegs sysreg = id_register_sysreg[i];
> +        uint64_t previous, new;
> +        uint64_t *cpreg;
> +
> +        if (!sysregdesc->writable_mask) {
> +            continue;
> +        }
> +
> +        cpreg = kvm_arm_get_cpreg_ptr(cpu, idregs_sysreg_to_kvm_reg(sysreg));
> +        previous = *cpreg;
> +        new = cpu->isar.idregs[i];
> +
> +        if (previous != new) {
> +            *cpreg = new;
> +            trace_kvm_arm_writable_idregs_to_cpreg_list(sysregdesc->name,
> +                                                        previous, new);
> +         }
> +    }
> +}
> +
> void kvm_arm_reset_vcpu(ARMCPU *cpu)
> {
>     int ret;
> @@ -2115,7 +2191,23 @@ int kvm_arch_init_vcpu(CPUState *cs)
>     }
>     cpu->mp_affinity = mpidr & ARM64_AFFINITY_MASK;
> 
> -    return kvm_arm_init_cpreg_list(cpu);
> +    ret = kvm_arm_init_cpreg_list(cpu);
> +    if (ret) {
> +        return ret;
> +    }
> +    /* overwrite writable ID regs with their updated property values */
> +    kvm_arm_writable_idregs_to_cpreg_list(cpu);
> +    ret = write_list_to_kvmstate(cpu, KVM_PUT_FULL_STATE);
> +    if (!ret) {
> +        return -1;
> +    }
> +    /*
> +     * modified values may have changed the visibility of some regs,
> +     * reinitialize the cpreg_list accordingly
> +     */
> +     ret = kvm_arm_init_cpreg_list(cpu);
nit: indent
> +
> +    return ret;
> }
> 
> int kvm_arch_destroy_vcpu(CPUState *cs)
> diff --git a/target/arm/trace-events b/target/arm/trace-events
> index 8502fb3265..c25d2a1191 100644
> --- a/target/arm/trace-events
> +++ b/target/arm/trace-events
> @@ -13,6 +13,8 @@ arm_gt_update_irq(int timer, int irqstate) "gt_update_irq: timer %d irqstate %d"
> 
> # kvm.c
> kvm_arm_fixup_msi_route(uint64_t iova, uint64_t gpa) "MSI iova = 0x%"PRIx64" is translated into 0x%"PRIx64
> +get_host_cpu_idregs(const char *name, uint64_t value) "scratch vcpu host value for %s is 0x%"PRIx64
> +kvm_arm_writable_idregs_to_cpreg_list(const char *name, uint64_t previous, uint64_t new) "%s overwrite default 0x%"PRIx64" with 0x%"PRIx64
> 
> # cpu.c
> arm_cpu_reset(uint64_t mp_aff) "cpu %" PRIu64
> -- 
> 2.53.0
> 

Reviewed-by: Khushit Shah <khushit.shah@nutanix.com>

[RFC PATCH v7 12/18] target/arm/kvm: Introduce kvm_arm_expose_idreg_properties

[Eric Auger]

This helper decode the ID reg writable mask, matches it against
ID reg fields defined in target/arm/cpu-idregs.h.inc and
for each writable named field, generates a uint64 property.

REVIDR_EL1 and AIDR_EL1 are writable but they do not expose any
field. They will be handled separately.

Signed-off-by: Eric Auger <eric.auger@redhat.com>

---

v5 -> v6
- for enum values, check against value value when setting the prop
- do not check writable_map flag anymore

v4 -> v5:
- free prop_name
- check cpu->writable_map as a preamble in kvm_arm_expose_idreg_properties
---
 target/arm/kvm_arm.h    |  10 +++
 target/arm/kvm.c        | 144 ++++++++++++++++++++++++++++++++++++++++
 target/arm/trace-events |   4 ++
 3 files changed, 158 insertions(+)

diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h
index e7c40fb003..2b3474cc36 100644
--- a/target/arm/kvm_arm.h
+++ b/target/arm/kvm_arm.h
@@ -142,6 +142,16 @@ void kvm_arm_set_cpu_features_from_host(ARMCPU *cpu);
  */
 void kvm_arm_add_vcpu_properties(ARMCPU *cpu);
 
+typedef struct ARM64SysReg ARM64SysReg;
+/**
+ * kvm_arm_expose_idreg_properties:
+ * @cpu: The CPU object to generate the properties for
+ * @reg: registers from the host
+ *
+ * analyze the writable mask and generate properties for writable fields
+ */
+void kvm_arm_expose_idreg_properties(ARMCPU *cpu, ARM64SysReg *regs);
+
 /**
  * kvm_arm_steal_time_finalize:
  * @cpu: ARMCPU for which to finalize kvm-steal-time
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 4f9b0a559d..1a78893f87 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -327,6 +327,150 @@ static int get_host_cpu_idregs(int fd, ARMHostCPUFeatures *ahcf)
     return err;
 }
 
+static ARM64SysRegField *get_field(int i, ARM64SysReg *reg)
+{
+    for (int f = 0; f < reg->fields_count; f++) {
+        struct ARM64SysRegField *field = &reg->fields[f];
+        int upper = field->shift + field->length - 1;
+
+        if (i >= field->shift && i <= upper) {
+            return field;
+        }
+    }
+    return NULL;
+}
+
+static void set_sysreg_prop(Object *obj, Visitor *v,
+                            const char *name, void *opaque,
+                            Error **errp)
+{
+    ARM64SysRegField *field = (ARM64SysRegField *)opaque;
+    ARMCPU *cpu = ARM_CPU(obj);
+    uint64_t *idregs = cpu->isar.idregs;
+    uint64_t old, value, mask;
+    int lower = field->shift;
+    int length = field->length;
+    int index = field->index;
+
+    if (!visit_type_uint64(v, name, &value, errp)) {
+        return;
+    }
+
+    if (length < 64 && value > ((1 << length) - 1)) {
+        error_setg(errp,
+                   "idreg %s set value (0x%lx) exceeds length of field (%d)!",
+                   name, value, length);
+        return;
+    }
+
+    if (field->arch_vals) {
+        /* this field has some enum values */
+        for (int i = 0; i < field->arch_vals_count; i++) {
+            if (value == field->arch_vals[i].value) {
+                goto valid;
+            }
+        }
+        error_setg(errp,
+                   "idreg %s set value (0x%lx) does not match any "
+                   "arch valid enum value!", name, value);
+        return;
+    }
+
+valid:
+
+    mask = MAKE_64BIT_MASK(lower, length);
+    value = value << lower;
+    old = idregs[index];
+    idregs[index] = old & ~mask;
+    idregs[index] |= value;
+    trace_set_sysreg_prop(name, old, mask, value, idregs[index]);
+}
+
+static void get_sysreg_prop(Object *obj, Visitor *v,
+                            const char *name, void *opaque,
+                            Error **errp)
+{
+    ARM64SysRegField *field = (ARM64SysRegField *)opaque;
+    ARMCPU *cpu = ARM_CPU(obj);
+    uint64_t *idregs = cpu->isar.idregs;
+    uint64_t value, mask;
+    int lower = field->shift;
+    int length = field->length;
+    int index = field->index;
+
+    mask = MAKE_64BIT_MASK(lower, length);
+    value = (idregs[index] & mask) >> lower;
+    visit_type_uint64(v, name, &value, errp);
+    trace_get_sysreg_prop(name, value);
+}
+
+/*
+ * decode_idreg_writemap: Generate props for writable fields
+ *
+ * @obj: CPU object
+ * @reg: description of the sysreg
+ */
+static int
+decode_idreg_writemap(Object *obj, ARM64SysReg *reg)
+{
+    uint64_t map = reg->writable_mask;
+    int i = ctz64(map);
+    int nb_sysreg_props = 0;
+
+    while (map) {
+        ARM64SysRegField *field = get_field(i, reg);
+        int lower, upper;
+        char *prop_name;
+        uint64_t field_mask;
+
+        if (!field) {
+            warn_report("%s bit %d of %s is writable but no named field "
+                        "in target/arm/cpu-idregs.h.inc",
+                        __func__, i, reg->name);
+            warn_report("%s is target/arm/cpu-idregs.h.inc up-to-date?", __func__);
+            map =  map & ~BIT_ULL(i);
+            i = ctz64(map);
+            continue;
+        }
+        lower = field->shift;
+        upper = field->shift + field->length - 1;
+        prop_name = g_strdup_printf("SYSREG_%s_%s", reg->name, field->name);
+        trace_decode_idreg_writemap(field->name, lower, upper, prop_name);
+        object_property_add(obj, prop_name, "uint64",
+                            get_sysreg_prop, set_sysreg_prop, NULL, field);
+        g_free(prop_name);
+        nb_sysreg_props++;
+
+        field_mask = MAKE_64BIT_MASK(lower, field->length);
+        map = map & ~field_mask;
+        i = ctz64(map);
+    }
+    trace_nb_sysreg_props(reg->name, nb_sysreg_props);
+    return 0;
+}
+
+/* analyze the writable mask and generate properties for writable fields */
+void kvm_arm_expose_idreg_properties(ARMCPU *cpu, ARM64SysReg *regs)
+{
+    Object *obj = OBJECT(cpu);
+
+    for (int i = 0; i < NUM_ID_IDX; i++) {
+        ARM64SysReg *sysregdesc = &regs[i];
+
+        if (sysregdesc->writable_mask) {
+            /*
+             * special case REVIDR_EL1 and AIDR_EL1 which are writable but
+             * do not expose named fields. They will need to be handled
+             * separately
+             */
+            if (strcmp(sysregdesc->name, "REVIDR_EL1") &&
+                strcmp(sysregdesc->name, "AIDR_EL1")) {
+                decode_idreg_writemap(obj, sysregdesc);
+            }
+        }
+    }
+}
+
 static void
 kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
 {
diff --git a/target/arm/trace-events b/target/arm/trace-events
index c25d2a1191..d72ad6b671 100644
--- a/target/arm/trace-events
+++ b/target/arm/trace-events
@@ -15,6 +15,10 @@ arm_gt_update_irq(int timer, int irqstate) "gt_update_irq: timer %d irqstate %d"
 kvm_arm_fixup_msi_route(uint64_t iova, uint64_t gpa) "MSI iova = 0x%"PRIx64" is translated into 0x%"PRIx64
 get_host_cpu_idregs(const char *name, uint64_t value) "scratch vcpu host value for %s is 0x%"PRIx64
 kvm_arm_writable_idregs_to_cpreg_list(const char *name, uint64_t previous, uint64_t new) "%s overwrite default 0x%"PRIx64" with 0x%"PRIx64
+decode_idreg_writemap(const char* name, int lower, int upper, char *prop_name) "%s [%d:%d] is writable (prop %s)"
+get_sysreg_prop(const char *name, uint64_t value) "%s 0x%"PRIx64
+set_sysreg_prop(const char *name, uint64_t old, uint64_t mask, uint64_t field_value, uint64_t new) "%s old reg value=0x%"PRIx64" mask=0x%"PRIx64" new field value=0x%"PRIx64" new reg value=0x%"PRIx64
+nb_sysreg_props(const char *name, int count) "%s: %d SYSREG properties"
 
 # cpu.c
 arm_cpu_reset(uint64_t mp_aff) "cpu %" PRIu64
-- 
2.53.0

Re: [RFC PATCH v7 12/18] target/arm/kvm: Introduce kvm_arm_expose_idreg_properties

[Markus Armbruster]

Eric Auger <eric.auger@redhat.com> writes:

> This helper decode the ID reg writable mask, matches it against
> ID reg fields defined in target/arm/cpu-idregs.h.inc and
> for each writable named field, generates a uint64 property.
>
> REVIDR_EL1 and AIDR_EL1 are writable but they do not expose any
> field. They will be handled separately.
>
> Signed-off-by: Eric Auger <eric.auger@redhat.com>

[...]

> diff --git a/target/arm/kvm.c b/target/arm/kvm.c
> index 4f9b0a559d..1a78893f87 100644
> --- a/target/arm/kvm.c
> +++ b/target/arm/kvm.c

[...]

> +static void set_sysreg_prop(Object *obj, Visitor *v,
> +                            const char *name, void *opaque,
> +                            Error **errp)
> +{
> +    ARM64SysRegField *field = (ARM64SysRegField *)opaque;
> +    ARMCPU *cpu = ARM_CPU(obj);
> +    uint64_t *idregs = cpu->isar.idregs;
> +    uint64_t old, value, mask;
> +    int lower = field->shift;
> +    int length = field->length;
> +    int index = field->index;
> +
> +    if (!visit_type_uint64(v, name, &value, errp)) {
> +        return;
> +    }
> +
> +    if (length < 64 && value > ((1 << length) - 1)) {
> +        error_setg(errp,
> +                   "idreg %s set value (0x%lx) exceeds length of field (%d)!",
> +                   name, value, length);
> +        return;
> +    }
> +
> +    if (field->arch_vals) {
> +        /* this field has some enum values */
> +        for (int i = 0; i < field->arch_vals_count; i++) {
> +            if (value == field->arch_vals[i].value) {
> +                goto valid;
> +            }
> +        }
> +        error_setg(errp,
> +                   "idreg %s set value (0x%lx) does not match any "
> +                   "arch valid enum value!", name, value);

Scratch the !

From error_setg()'s contract:

 * The resulting message should be a single phrase, with no newline or
 * trailing punctuation.

> +        return;
> +    }
> +
> +valid:
> +
> +    mask = MAKE_64BIT_MASK(lower, length);
> +    value = value << lower;
> +    old = idregs[index];
> +    idregs[index] = old & ~mask;
> +    idregs[index] |= value;
> +    trace_set_sysreg_prop(name, old, mask, value, idregs[index]);
> +}

[...]

[RFC PATCH v7 13/18] target/arm/cpu: Expose writable ID reg field properties on the kvm host vcpu model

[Eric Auger]

If the host supports KVM_CAP_ARM_SUPPORTED_REG_MASK_RANGES and
KVM_ARM_GET_REG_WRITABLE_MASKS ioctl successfully retrieved the mask
of writable fields for all ID regs, expose uint64 SYSREG properties
for all the writable ID reg fields exposed by the host kernel which
can be matched in target/arm/cpu-idregs.h.inc.

Properties are named  SYSREG_<REG>_<FIELD> with REG and FIELD
being those used ARCHMRS Registers.json.

When such properties are set, they override the default field value
retrieved from the host and reinjected into KVM. Then the actual value
being applied at KVM depends on the register, ie. it can be sanitized.
In case the field value is rejected by KVM, the vpcu init fails.

Anyway there is a first attempt to write back this value into KVM.

Then legacy CPU options (virtualization, secure, ...) can still
override the previous value. So low level IDREG field properties
apply before the legacy ones.

An example of invocation is:
-cpu host,SYSREG_ID_AA64MMFR0_EL1_ECV=0x0
which sets ECV field of ID_AA64MMFR0_EL1 to 0 (enhanced counter
virtualization).

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Sebastian Ott <sebott@redhat.com>

---
v5 -> v6:
- do not check writable_map anymore

v4 -> v5:
- get rid of ret local variable, dynamically allocate and free writable_map
  here
---
 target/arm/cpu64.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 2816735577..d5d02515df 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -37,6 +37,7 @@
 #include "hw/core/qdev-properties.h"
 #include "internals.h"
 #include "cpu-features.h"
+#include "cpu-idregs.h"
 
 /* convert between <register>_IDX and SYS_<register> */
 #define DEF(NAME, OP0, OP1, CRN, CRM, OP2)      \
@@ -806,6 +807,10 @@ void aarch64_host_initfn(Object *obj)
     kvm_arm_set_cpreg_mig_tolerances(cpu);
     kvm_arm_set_cpu_features_from_host(cpu);
     aarch64_add_sve_properties(obj);
+
+    /* generate SYSREG properties according to writable masks */
+    kvm_arm_expose_idreg_properties(cpu, arm64_id_regs);
+
 #elif defined(CONFIG_HVF)
     hvf_arm_set_cpu_features_from_host(cpu);
 #elif defined(CONFIG_WHPX)
-- 
2.53.0

[RFC PATCH v7 14/18] target/arm/cpu-idregs.h.inc: Generate reserved fields

[Eric Auger]

Extract reserved fields: RES0, RES1, RAZ, ...

Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 target/arm/cpu-idregs.h.inc                   | 69 ++++++++++++++-
 .../update-aarch64-cpu-sysreg-properties.py   | 83 +++++++++++++++----
 2 files changed, 136 insertions(+), 16 deletions(-)

diff --git a/target/arm/cpu-idregs.h.inc b/target/arm/cpu-idregs.h.inc
index 1c8b26133b..5fdc84237c 100644
--- a/target/arm/cpu-idregs.h.inc
+++ b/target/arm/cpu-idregs.h.inc
@@ -15,16 +15,20 @@ IDREG_START(AIDR_EL1)
 IDREG_END(AIDR_EL1)
 
 IDREG_START(CCSIDR2_EL1)
+    IDREG_FIELD(CCSIDR2_EL1, RES0, 24, 40)
     IDREG_FIELD(CCSIDR2_EL1, NumSets, 0, 24)
 IDREG_END(CCSIDR2_EL1)
 
 IDREG_START(CCSIDR_EL1)
+    IDREG_FIELD(CCSIDR_EL1, RES0, 56, 8)
     IDREG_FIELD(CCSIDR_EL1, NumSets, 32, 24)
+    IDREG_FIELD(CCSIDR_EL1, RES0, 24, 8)
     IDREG_FIELD(CCSIDR_EL1, Associativity, 3, 21)
     IDREG_FIELD(CCSIDR_EL1, LineSize, 0, 3)
 IDREG_END(CCSIDR_EL1)
 
 IDREG_START(CLIDR_EL1)
+    IDREG_FIELD(CLIDR_EL1, RES0, 47, 17)
     IDREG_FIELD(CLIDR_EL1, Ttype7, 45, 2)
     IDREG_FIELD(CLIDR_EL1, Ttype6, 43, 2)
     IDREG_FIELD(CLIDR_EL1, Ttype5, 41, 2)
@@ -55,7 +59,10 @@ IDREG_START(CLIDR_EL1)
 IDREG_END(CLIDR_EL1)
 
 IDREG_START(CTR_EL0)
+    IDREG_FIELD(CTR_EL0, RES0, 38, 26)
     IDREG_FIELD(CTR_EL0, TminLine, 32, 6)
+    IDREG_FIELD(CTR_EL0, RES1, 31, 1)
+    IDREG_FIELD(CTR_EL0, RES0, 30, 1)
     IDREG_FIELD_START(CTR_EL0, DIC, 29, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -73,23 +80,28 @@ IDREG_START(CTR_EL0)
         IDREG_FIELD_ARCH_VAL(2)
         IDREG_FIELD_ARCH_VAL(3)
     IDREG_FIELD_END(CTR_EL0, L1Ip)
+    IDREG_FIELD(CTR_EL0, RES0, 4, 10)
     IDREG_FIELD(CTR_EL0, IminLine, 0, 4)
 IDREG_END(CTR_EL0)
 
 IDREG_START(DCZID_EL0)
+    IDREG_FIELD(DCZID_EL0, RES0, 9, 55)
     IDREG_FIELD(DCZID_EL0, TBS, 5, 4)
     IDREG_FIELD(DCZID_EL0, DZP, 4, 1)
     IDREG_FIELD(DCZID_EL0, BS, 0, 4)
 IDREG_END(DCZID_EL0)
 
 IDREG_START(GMID_EL1)
+    IDREG_FIELD(GMID_EL1, RES0, 4, 60)
     IDREG_FIELD(GMID_EL1, BS, 0, 4)
 IDREG_END(GMID_EL1)
 
 IDREG_START(ID_AA64AFR0_EL1)
+    IDREG_FIELD(ID_AA64AFR0_EL1, RES0, 32, 32)
 IDREG_END(ID_AA64AFR0_EL1)
 
 IDREG_START(ID_AA64AFR1_EL1)
+    IDREG_FIELD(ID_AA64AFR1_EL1, RES0, 0, 64)
 IDREG_END(ID_AA64AFR1_EL1)
 
 IDREG_START(ID_AA64DFR0_EL1)
@@ -136,6 +148,7 @@ IDREG_START(ID_AA64DFR0_EL1)
     IDREG_FIELD_START(ID_AA64DFR0_EL1, CTX_CMPs, 28, 4)
         IDREG_FIELD_ARCH_VAL(15)
     IDREG_FIELD_END(ID_AA64DFR0_EL1, CTX_CMPs)
+    IDREG_FIELD(ID_AA64DFR0_EL1, RES0, 24, 4)
     IDREG_FIELD(ID_AA64DFR0_EL1, WRPs, 20, 4)
     IDREG_FIELD_START(ID_AA64DFR0_EL1, PMSS, 16, 4)
         IDREG_FIELD_ARCH_VAL(0)
@@ -209,6 +222,7 @@ IDREG_START(ID_AA64DFR1_EL1)
 IDREG_END(ID_AA64DFR1_EL1)
 
 IDREG_START(ID_AA64DFR2_EL1)
+    IDREG_FIELD(ID_AA64DFR2_EL1, RES0, 28, 36)
     IDREG_FIELD_START(ID_AA64DFR2_EL1, TRBE_EXC, 24, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -221,6 +235,7 @@ IDREG_START(ID_AA64DFR2_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64DFR2_EL1, SPE_EXC)
+    IDREG_FIELD(ID_AA64DFR2_EL1, RES0, 8, 8)
     IDREG_FIELD_START(ID_AA64DFR2_EL1, BWE, 4, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -233,6 +248,7 @@ IDREG_START(ID_AA64DFR2_EL1)
 IDREG_END(ID_AA64DFR2_EL1)
 
 IDREG_START(ID_AA64FPFR0_EL1)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8CVT, 31, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -257,10 +273,13 @@ IDREG_START(ID_AA64FPFR0_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64FPFR0_EL1, F8MM4)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, RES0, 16, 10)
     IDREG_FIELD_START(ID_AA64FPFR0_EL1, F16MM2, 15, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64FPFR0_EL1, F16MM2)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, RES0, 8, 7)
+    IDREG_FIELD(ID_AA64FPFR0_EL1, RAZ, 2, 6)
     IDREG_FIELD_START(ID_AA64FPFR0_EL1, F8E4M3, 1, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -312,6 +331,7 @@ IDREG_START(ID_AA64ISAR0_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64ISAR0_EL1, RDM)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, RES0, 24, 4)
     IDREG_FIELD_START(ID_AA64ISAR0_EL1, Atomic, 20, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(2)
@@ -335,6 +355,7 @@ IDREG_START(ID_AA64ISAR0_EL1)
         IDREG_FIELD_ARCH_VAL(1)
         IDREG_FIELD_ARCH_VAL(2)
     IDREG_FIELD_END(ID_AA64ISAR0_EL1, AES)
+    IDREG_FIELD(ID_AA64ISAR0_EL1, RES0, 0, 4)
 IDREG_END(ID_AA64ISAR0_EL1)
 
 IDREG_START(ID_AA64ISAR1_EL1)
@@ -498,6 +519,7 @@ IDREG_START(ID_AA64ISAR2_EL1)
 IDREG_END(ID_AA64ISAR2_EL1)
 
 IDREG_START(ID_AA64ISAR3_EL1)
+    IDREG_FIELD(ID_AA64ISAR3_EL1, RES0, 48, 16)
     IDREG_FIELD_START(ID_AA64ISAR3_EL1, LSCP, 44, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -561,6 +583,7 @@ IDREG_START(ID_AA64MMFR0_EL1)
         IDREG_FIELD_ARCH_VAL(1)
         IDREG_FIELD_ARCH_VAL(2)
     IDREG_FIELD_END(ID_AA64MMFR0_EL1, FGT)
+    IDREG_FIELD(ID_AA64MMFR0_EL1, RES0, 48, 8)
     IDREG_FIELD_START(ID_AA64MMFR0_EL1, ExS, 44, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -713,6 +736,7 @@ IDREG_START(ID_AA64MMFR2_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64MMFR2_EL1, TTL)
+    IDREG_FIELD(ID_AA64MMFR2_EL1, RES0, 44, 4)
     IDREG_FIELD_START(ID_AA64MMFR2_EL1, FWB, 40, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -778,6 +802,7 @@ IDREG_START(ID_AA64MMFR3_EL1)
         IDREG_FIELD_ARCH_VAL(2)
         IDREG_FIELD_ARCH_VAL(3)
     IDREG_FIELD_END(ID_AA64MMFR3_EL1, SDERR)
+    IDREG_FIELD(ID_AA64MMFR3_EL1, RES0, 48, 4)
     IDREG_FIELD_START(ID_AA64MMFR3_EL1, ANERR, 44, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1031,6 +1056,7 @@ IDREG_START(ID_AA64PFR1_EL1)
         IDREG_FIELD_ARCH_VAL(1)
         IDREG_FIELD_ARCH_VAL(2)
     IDREG_FIELD_END(ID_AA64PFR1_EL1, SME)
+    IDREG_FIELD(ID_AA64PFR1_EL1, RES0, 20, 4)
     IDREG_FIELD_START(ID_AA64PFR1_EL1, MPAM_frac, 16, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1058,6 +1084,7 @@ IDREG_START(ID_AA64PFR1_EL1)
 IDREG_END(ID_AA64PFR1_EL1)
 
 IDREG_START(ID_AA64PFR2_EL1)
+    IDREG_FIELD(ID_AA64PFR2_EL1, RES0, 48, 16)
     IDREG_FIELD_START(ID_AA64PFR2_EL1, VMTETCL, 44, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1117,6 +1144,7 @@ IDREG_START(ID_AA64SMFR0_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64SMFR0_EL1, FA64)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, RES0, 62, 1)
     IDREG_FIELD_START(ID_AA64SMFR0_EL1, LUT6, 61, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1136,6 +1164,7 @@ IDREG_START(ID_AA64SMFR0_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(15)
     IDREG_FIELD_END(ID_AA64SMFR0_EL1, I16I64)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, RES0, 49, 3)
     IDREG_FIELD_START(ID_AA64SMFR0_EL1, F64F64, 48, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1180,6 +1209,7 @@ IDREG_START(ID_AA64SMFR0_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64SMFR0_EL1, F32F32)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, RES0, 31, 1)
     IDREG_FIELD_START(ID_AA64SMFR0_EL1, SF8FMA, 30, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1192,6 +1222,7 @@ IDREG_START(ID_AA64SMFR0_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64SMFR0_EL1, SF8DP2)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, RES0, 26, 2)
     IDREG_FIELD_START(ID_AA64SMFR0_EL1, SBitPerm, 25, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1204,10 +1235,12 @@ IDREG_START(ID_AA64SMFR0_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64SMFR0_EL1, SFEXPA)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, RES0, 17, 6)
     IDREG_FIELD_START(ID_AA64SMFR0_EL1, STMOP, 16, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64SMFR0_EL1, STMOP)
+    IDREG_FIELD(ID_AA64SMFR0_EL1, RES0, 1, 15)
     IDREG_FIELD_START(ID_AA64SMFR0_EL1, SMOP4, 0, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1215,6 +1248,7 @@ IDREG_START(ID_AA64SMFR0_EL1)
 IDREG_END(ID_AA64SMFR0_EL1)
 
 IDREG_START(ID_AA64ZFR0_EL1)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, RES0, 60, 4)
     IDREG_FIELD_START(ID_AA64ZFR0_EL1, F64MM, 56, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1235,10 +1269,12 @@ IDREG_START(ID_AA64ZFR0_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64ZFR0_EL1, SM4)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, RES0, 36, 4)
     IDREG_FIELD_START(ID_AA64ZFR0_EL1, SHA3, 32, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64ZFR0_EL1, SHA3)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, RES0, 28, 4)
     IDREG_FIELD_START(ID_AA64ZFR0_EL1, B16B16, 24, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1258,6 +1294,7 @@ IDREG_START(ID_AA64ZFR0_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_AA64ZFR0_EL1, EltPerm)
+    IDREG_FIELD(ID_AA64ZFR0_EL1, RES0, 8, 4)
     IDREG_FIELD_START(ID_AA64ZFR0_EL1, AES, 4, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1274,9 +1311,11 @@ IDREG_START(ID_AA64ZFR0_EL1)
 IDREG_END(ID_AA64ZFR0_EL1)
 
 IDREG_START(ID_AFR0_EL1)
+    IDREG_FIELD(ID_AFR0_EL1, RES0, 0, 64)
 IDREG_END(ID_AFR0_EL1)
 
 IDREG_START(ID_DFR0_EL1)
+    IDREG_FIELD(ID_DFR0_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_DFR0_EL1, TraceFilt, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1328,6 +1367,7 @@ IDREG_START(ID_DFR0_EL1)
 IDREG_END(ID_DFR0_EL1)
 
 IDREG_START(ID_DFR1_EL1)
+    IDREG_FIELD(ID_DFR1_EL1, RES0, 8, 56)
     IDREG_FIELD_START(ID_DFR1_EL1, HPMN0, 4, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1340,6 +1380,7 @@ IDREG_START(ID_DFR1_EL1)
 IDREG_END(ID_DFR1_EL1)
 
 IDREG_START(ID_ISAR0_EL1)
+    IDREG_FIELD(ID_ISAR0_EL1, RES0, 28, 36)
     IDREG_FIELD_START(ID_ISAR0_EL1, Divide, 24, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1375,6 +1416,7 @@ IDREG_START(ID_ISAR0_EL1)
 IDREG_END(ID_ISAR0_EL1)
 
 IDREG_START(ID_ISAR1_EL1)
+    IDREG_FIELD(ID_ISAR1_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_ISAR1_EL1, Jazelle, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1413,6 +1455,7 @@ IDREG_START(ID_ISAR1_EL1)
 IDREG_END(ID_ISAR1_EL1)
 
 IDREG_START(ID_ISAR2_EL1)
+    IDREG_FIELD(ID_ISAR2_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_ISAR2_EL1, Reversal, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1458,6 +1501,7 @@ IDREG_START(ID_ISAR2_EL1)
 IDREG_END(ID_ISAR2_EL1)
 
 IDREG_START(ID_ISAR3_EL1)
+    IDREG_FIELD(ID_ISAR3_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_ISAR3_EL1, T32EE, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1495,6 +1539,7 @@ IDREG_START(ID_ISAR3_EL1)
 IDREG_END(ID_ISAR3_EL1)
 
 IDREG_START(ID_ISAR4_EL1)
+    IDREG_FIELD(ID_ISAR4_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_ISAR4_EL1, SWP_frac, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1519,12 +1564,12 @@ IDREG_START(ID_ISAR4_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_ISAR4_EL1, Writeback)
-    IDREG_FIELD_START(ID_ISAR4_EL1, WithShifts, 4, 4)
+    IDREG_FIELD_START(ID_ISAR4_EL1, WI, 4, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
         IDREG_FIELD_ARCH_VAL(3)
         IDREG_FIELD_ARCH_VAL(4)
-    IDREG_FIELD_END(ID_ISAR4_EL1, WithShifts)
+    IDREG_FIELD_END(ID_ISAR4_EL1, WI)
     IDREG_FIELD_START(ID_ISAR4_EL1, Unpriv, 0, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1533,6 +1578,7 @@ IDREG_START(ID_ISAR4_EL1)
 IDREG_END(ID_ISAR4_EL1)
 
 IDREG_START(ID_ISAR5_EL1)
+    IDREG_FIELD(ID_ISAR5_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_ISAR5_EL1, VCMA, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1541,6 +1587,7 @@ IDREG_START(ID_ISAR5_EL1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(ID_ISAR5_EL1, RDM)
+    IDREG_FIELD(ID_ISAR5_EL1, RES0, 20, 4)
     IDREG_FIELD_START(ID_ISAR5_EL1, CRC32, 16, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1565,6 +1612,7 @@ IDREG_START(ID_ISAR5_EL1)
 IDREG_END(ID_ISAR5_EL1)
 
 IDREG_START(ID_ISAR6_EL1)
+    IDREG_FIELD(ID_ISAR6_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_ISAR6_EL1, CLRBHB, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1601,6 +1649,7 @@ IDREG_START(ID_ISAR6_EL1)
 IDREG_END(ID_ISAR6_EL1)
 
 IDREG_START(ID_MMFR0_EL1)
+    IDREG_FIELD(ID_MMFR0_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_MMFR0_EL1, InnerShr, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1647,6 +1696,7 @@ IDREG_START(ID_MMFR0_EL1)
 IDREG_END(ID_MMFR0_EL1)
 
 IDREG_START(ID_MMFR1_EL1)
+    IDREG_FIELD(ID_MMFR1_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_MMFR1_EL1, BPred, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1695,6 +1745,7 @@ IDREG_START(ID_MMFR1_EL1)
 IDREG_END(ID_MMFR1_EL1)
 
 IDREG_START(ID_MMFR2_EL1)
+    IDREG_FIELD(ID_MMFR2_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_MMFR2_EL1, HWAccFlg, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1733,6 +1784,7 @@ IDREG_START(ID_MMFR2_EL1)
 IDREG_END(ID_MMFR2_EL1)
 
 IDREG_START(ID_MMFR3_EL1)
+    IDREG_FIELD(ID_MMFR3_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_MMFR3_EL1, Supersec, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(15)
@@ -1772,6 +1824,7 @@ IDREG_START(ID_MMFR3_EL1)
 IDREG_END(ID_MMFR3_EL1)
 
 IDREG_START(ID_MMFR4_EL1)
+    IDREG_FIELD(ID_MMFR4_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_MMFR4_EL1, EVT, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1809,6 +1862,7 @@ IDREG_START(ID_MMFR4_EL1)
 IDREG_END(ID_MMFR4_EL1)
 
 IDREG_START(ID_MMFR5_EL1)
+    IDREG_FIELD(ID_MMFR5_EL1, RES0, 8, 56)
     IDREG_FIELD_START(ID_MMFR5_EL1, nTLBPA, 4, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1822,6 +1876,7 @@ IDREG_START(ID_MMFR5_EL1)
 IDREG_END(ID_MMFR5_EL1)
 
 IDREG_START(ID_PFR0_EL1)
+    IDREG_FIELD(ID_PFR0_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_PFR0_EL1, RAS, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1863,6 +1918,7 @@ IDREG_START(ID_PFR0_EL1)
 IDREG_END(ID_PFR0_EL1)
 
 IDREG_START(ID_PFR1_EL1)
+    IDREG_FIELD(ID_PFR1_EL1, RES0, 32, 32)
     IDREG_FIELD_START(ID_PFR1_EL1, GIC, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1902,6 +1958,7 @@ IDREG_START(ID_PFR1_EL1)
 IDREG_END(ID_PFR1_EL1)
 
 IDREG_START(ID_PFR2_EL1)
+    IDREG_FIELD(ID_PFR2_EL1, RES0, 12, 52)
     IDREG_FIELD_START(ID_PFR2_EL1, RAS_frac, 8, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1949,11 +2006,14 @@ IDREG_START(MIDR_EL1)
 IDREG_END(MIDR_EL1)
 
 IDREG_START(MPIDR_EL1)
+    IDREG_FIELD(MPIDR_EL1, RES0, 40, 24)
     IDREG_FIELD(MPIDR_EL1, Aff3, 32, 8)
+    IDREG_FIELD(MPIDR_EL1, RES1, 31, 1)
     IDREG_FIELD_START(MPIDR_EL1, U, 30, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
     IDREG_FIELD_END(MPIDR_EL1, U)
+    IDREG_FIELD(MPIDR_EL1, RES0, 25, 5)
     IDREG_FIELD_START(MPIDR_EL1, MT, 24, 1)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -1964,6 +2024,7 @@ IDREG_START(MPIDR_EL1)
 IDREG_END(MPIDR_EL1)
 
 IDREG_START(MVFR0_EL1)
+    IDREG_FIELD(MVFR0_EL1, RES0, 32, 32)
     IDREG_FIELD_START(MVFR0_EL1, FPRound, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -2002,6 +2063,7 @@ IDREG_START(MVFR0_EL1)
 IDREG_END(MVFR0_EL1)
 
 IDREG_START(MVFR1_EL1)
+    IDREG_FIELD(MVFR1_EL1, RES0, 32, 32)
     IDREG_FIELD_START(MVFR1_EL1, SIMDFMAC, 28, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -2040,6 +2102,7 @@ IDREG_START(MVFR1_EL1)
 IDREG_END(MVFR1_EL1)
 
 IDREG_START(MVFR2_EL1)
+    IDREG_FIELD(MVFR2_EL1, RES0, 8, 56)
     IDREG_FIELD_START(MVFR2_EL1, FPMisc, 4, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(1)
@@ -2059,6 +2122,7 @@ IDREG_START(REVIDR_EL1)
 IDREG_END(REVIDR_EL1)
 
 IDREG_START(SMIDR_EL1)
+    IDREG_FIELD(SMIDR_EL1, RES0, 60, 4)
     IDREG_FIELD_START(SMIDR_EL1, NSMC, 56, 4)
         IDREG_FIELD_ARCH_VAL(0)
         IDREG_FIELD_ARCH_VAL(15)
@@ -2094,6 +2158,7 @@ IDREG_START(SMIDR_EL1)
         IDREG_FIELD_ARCH_VAL(2)
         IDREG_FIELD_ARCH_VAL(3)
     IDREG_FIELD_END(SMIDR_EL1, SH)
+    IDREG_FIELD(SMIDR_EL1, RES0, 12, 1)
     IDREG_FIELD(SMIDR_EL1, Affinity, 0, 12)
 IDREG_END(SMIDR_EL1)
 
diff --git a/scripts/update-aarch64-cpu-sysreg-properties.py b/scripts/update-aarch64-cpu-sysreg-properties.py
index e1d6c4afef..9e829fda2e 100644
--- a/scripts/update-aarch64-cpu-sysreg-properties.py
+++ b/scripts/update-aarch64-cpu-sysreg-properties.py
@@ -81,9 +81,13 @@ def collect_fields(item, bit_offset=0):
 
     # Normal Field Types
     leaf_types = ['Fields.Field', 'Fields.ConstantField',
-                  'Fields.EnumeratedField', 'Fields.Bitfield']
+                  'Fields.EnumeratedField', 'Fields.Bitfield', 'Fields.Reserved']
     if _type in leaf_types:
         field_copy = item.copy()
+
+        if _type == 'Fields.Reserved' and not field_copy.get('name'):
+            field_copy['name'] = item.get('value', 'RES0')
+
         if field_copy.get('rangeset'):
             new_ranges = []
             for r in field_copy['rangeset']:
@@ -96,7 +100,7 @@ def collect_fields(item, bit_offset=0):
         return fields
 
     # Traverse the hierarchy for other cases
-    for key in ['fields', 'values', 'fieldsets']:
+    for key in ['fields', 'values', 'fieldsets', 'constants']:
         for nested in item.get(key, []):
             fields.extend(collect_fields(nested, bit_offset))
 
@@ -163,44 +167,95 @@ def generate_sysreg_properties_from_registers_json(id_reg_names, raw_json_path):
 
         final_output += f"IDREG_START({reg_name})\n"
 
-        unique_fields = {}
+        fieldset_variants = []
+
         for fieldset in register.get('fieldsets', []):
+            current_fieldset_fields = {}
             candidates = collect_fields(fieldset)
+
             for val in candidates:
-                name = (val.get('name') or val.get('label', '')).strip()
-                if not name or "RESERVED" in name.upper():
+                raw_name = val.get('name') or val.get('label') or val.get('value') or ''
+                name = raw_name.strip()
+                if not name:
                     continue
+
+                name_upper = name.upper()
+
+                # Check for architectural target states, including UNKNOWN remapping
+                base_reserved = None
+                for r_type in ["RES0", "RES1", "RAZ", "RAO", "WI", "UNKNOWN"]:
+                    if r_type in name_upper:
+                        base_reserved = "RES0" if r_type == "UNKNOWN" else r_type
+                        break
+
+                is_valid_reserved = base_reserved is not None
+                if "RESERVED" in name_upper and not is_valid_reserved:
+                    continue
+
+                # Force naming uniformity across padding blocks
+                if is_valid_reserved:
+                    name = base_reserved
+
                 for r in val.get('rangeset', []):
                     lsb = int(r.get('start'))
                     width = r.get('width')
                     msb = lsb + int(width) - 1
 
-                    # Only keep the fields with the highest MSB
-                    # needed fir CCSIDR_EL1
-                    if name not in unique_fields or msb > unique_fields[name]['msb']:
-                        # extract enum values if any
+                    if is_valid_reserved:
+                        unique_key = f"{name}_{lsb}"
+                    else:
+                        unique_key = name
+
+                    if unique_key not in current_fieldset_fields or \
+                       msb > current_fieldset_fields[unique_key]['msb']:
                         enums = extract_field_enums(val)
-                        unique_fields[name] = {'lsb': lsb, 'msb': msb, 'width': width, 'enums': enums}
+                        current_fieldset_fields[unique_key] = {
+                            'raw_name': name,
+                            'lsb': lsb,
+                            'msb': msb,
+                            'width': width,
+                            'enums': enums
+                        }
+
+            if current_fieldset_fields:
+                fieldset_variants.append(current_fieldset_fields)
+
+        best_fieldset = {}
+        max_total_width = -1
+
+        for variant in fieldset_variants:
+            total_width = sum(f['width'] for f in variant.values())
+            # prioritize layout variants with the highest MSB coverage
+            max_msb = max(f['msb'] for f in variant.values()) if variant else 0
+
+            # Combine width and max_msb into a fitness score tuple
+            if (total_width, max_msb) > (max_total_width, max_total_width):
+                max_total_width = total_width
+                best_fieldset = variant
+
+        unique_fields = best_fieldset
 
         # Sort decreasing lsbs
         sorted_fields = sorted(unique_fields.items(),
                                key=lambda x: x[1]['lsb'], reverse=True)
 
-        for name, bits in sorted_fields:
+        for unique_key, bits in sorted_fields:
             enums_list = bits.get('enums', [])
 
+            clean_name = bits.get('raw_name', unique_key)
+
             if enums_list:
                line = (f"    IDREG_FIELD_START({reg_name}, "
-                       f"{name}, {bits['lsb']}, {bits['width']})\n")
+                       f"{clean_name}, {bits['lsb']}, {bits['width']})\n")
             else:
                line = (f"    IDREG_FIELD({reg_name}, "
-                       f"{name}, {bits['lsb']}, {bits['width']})\n")
+                       f"{clean_name}, {bits['lsb']}, {bits['width']})\n")
             final_output += line
             # add the enum value definition if any
             for enum_item in enums_list:
                 final_output += (f"        IDREG_FIELD_ARCH_VAL({enum_item['value']})\n")
             if enums_list:
-               line = (f"    IDREG_FIELD_END({reg_name}, {name})\n")
+               line = (f"    IDREG_FIELD_END({reg_name}, {clean_name})\n")
                final_output += line
      
         final_output += f"IDREG_END({reg_name})\n"
-- 
2.53.0

[RFC PATCH v7 15/18] target/arm/kvm: Ignore and trace unexpected writable reserved fields

[Eric Auger]

KVM currently reports some bits as writable whereas they are
RES0 or RAZ. The code easily allows to do some sanity checking
for such inconsistencies. Let's add a trace event when this is
encountered and skip the field

Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 target/arm/kvm.c        | 8 ++++++++
 target/arm/trace-events | 1 +
 2 files changed, 9 insertions(+)

diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 1a78893f87..fceffee262 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -434,6 +434,14 @@ decode_idreg_writemap(Object *obj, ARM64SysReg *reg)
         }
         lower = field->shift;
         upper = field->shift + field->length - 1;
+
+        /* Sanity check the field is not a reserved field */
+        if (strstr(field->name, "RES0") || strstr(field->name, "RES1") ||
+            strstr(field->name, "RAZ")) {
+            trace_unexpected_writable_reserved_field(reg->name, field->name,
+                                                     lower, upper);
+            continue;
+        }
         prop_name = g_strdup_printf("SYSREG_%s_%s", reg->name, field->name);
         trace_decode_idreg_writemap(field->name, lower, upper, prop_name);
         object_property_add(obj, prop_name, "uint64",
diff --git a/target/arm/trace-events b/target/arm/trace-events
index d72ad6b671..e67730de6b 100644
--- a/target/arm/trace-events
+++ b/target/arm/trace-events
@@ -19,6 +19,7 @@ decode_idreg_writemap(const char* name, int lower, int upper, char *prop_name) "
 get_sysreg_prop(const char *name, uint64_t value) "%s 0x%"PRIx64
 set_sysreg_prop(const char *name, uint64_t old, uint64_t mask, uint64_t field_value, uint64_t new) "%s old reg value=0x%"PRIx64" mask=0x%"PRIx64" new field value=0x%"PRIx64" new reg value=0x%"PRIx64
 nb_sysreg_props(const char *name, int count) "%s: %d SYSREG properties"
+unexpected_writable_reserved_field(const char *reg_name, const char *field_name, int lower, int upper) "Unexpected writable reserved field: %s.%s [%d,%d], skip it ..."
 
 # cpu.c
 arm_cpu_reset(uint64_t mp_aff) "cpu %" PRIu64
-- 
2.53.0

[RFC PATCH v7 16/18] arm/cpu-features: document ID reg properties

[Eric Auger]

From: Cornelia Huck <cohuck@redhat.com>

Add some documentation for how individual ID registers can be
configured with the host cpu model.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Sebastian Ott <sebott@redhat.com>
---
 docs/system/arm/cpu-features.rst | 106 ++++++++++++++++++++++++++++---
 1 file changed, 98 insertions(+), 8 deletions(-)

diff --git a/docs/system/arm/cpu-features.rst b/docs/system/arm/cpu-features.rst
index 10b0eff27e..3a07a87bc3 100644
--- a/docs/system/arm/cpu-features.rst
+++ b/docs/system/arm/cpu-features.rst
@@ -2,7 +2,10 @@ Arm CPU Features
 ================
 
 CPU features are optional features that a CPU of supporting type may
-choose to implement or not.  In QEMU, optional CPU features have
+choose to implement or not.  QEMU provides two different mechanisms
+to configure those features:
+
+1. For most CPU models, optional CPU features may have
 corresponding boolean CPU proprieties that, when enabled, indicate
 that the feature is implemented, and, conversely, when disabled,
 indicate that it is not implemented. An example of an Arm CPU feature
@@ -31,6 +34,18 @@ running guests in AArch32.
 CPU features that are inherently specific to KVM are
 prefixed with "kvm-" and are described in "KVM VCPU Features".
 
+2. Additionally, the ``host`` CPU model on KVM allows to configure optional
+CPU features via the corresponding ID registers. The host kernel allows
+to write a subset of ID register fields. The host model exposes
+properties for each writable ID register field. Those options are named
+SYSREG_<IDREG>_<FIELD>. IDREG and FIELD names are those used in the
+ARM Architecture Reference Manual. Their availability depend on the host
+capability to let the userspace write those fields. Values set with those
+properties override the initial values retrieved from the host. They are
+written back to KVM and the eventual value applied by KVM depends on whether
+the value is sanitized or not by the host kernel. Then those field values
+are likely to be overriden again by legacy CPU options which apply at the end.
+
 CPU Feature Probing
 ===================
 
@@ -126,13 +141,20 @@ A note about CPU models and KVM
 
 Named CPU models generally do not work with KVM.  There are a few cases
 that do work, e.g. using the named CPU model ``cortex-a57`` with KVM on a
-seattle host, but mostly if KVM is enabled the ``host`` CPU type must be
-used.  This means the guest is provided all the same CPU features as the
-host CPU type has.  And, for this reason, the ``host`` CPU type should
-enable all CPU features that the host has by default.  Indeed it's even
-a bit strange to allow disabling CPU features that the host has when using
-the ``host`` CPU type, but in the absence of CPU models it's the best we can
-do if we want to launch guests without all the host's CPU features enabled.
+seattle host, but mostly if KVM is enabled, the ``host`` CPU model must be
+used.
+
+Using the ``host`` type means the guest is provided all the same CPU
+features as the host CPU type has.  And, for this reason, the ``host``
+CPU type should enable all CPU features that the host has by default.
+
+In case some features need to be hidden from the guest, and the host kernel
+supports it, the ``host`` model can be instructed to disable individual
+ID register values. This is especially useful for migration purposes.
+However, this interface will not allow configuring an arbitrary set of
+features; the ID registers must describe a subset of the host's features,
+and all differences to the host's configuration must actually be supported
+by the kernel to be deconfigured.
 
 Enabling KVM also affects the ``query-cpu-model-expansion`` QMP command.  The
 affect is not only limited to specific features, as pointed out in example
@@ -169,6 +191,13 @@ disabling many SVE vector lengths would be quite verbose, the ``sve<N>`` CPU
 properties have special semantics (see "SVE CPU Property Parsing
 Semantics").
 
+Additionally, if supported by KVM on the host kernel, the ``host`` CPU model
+may be configured via individual ID register field properties, for example::
+
+  $ qemu-system-aarch64 -M virt -cpu host,SYSREG_ID_AA64ISAR0_EL1_DP=0x0
+
+This forces ID_AA64ISAR0_EL1 DP field to 0.
+
 KVM VCPU Features
 =================
 
@@ -495,3 +524,64 @@ Legal values for ``S`` are 30, 34, 36, and 39; the default is 30.
 
 As with ``x-rme``, the ``x-l0gptsz`` property may be renamed or
 removed in some future QEMU release.
+
+Configuring CPU features via ID register fields
+===============================================
+
+Note that this is currently only supported under KVM, and with the
+``host`` CPU model.
+
+Querying available ID register fields
+-------------------------------------
+
+QEMU will create properties for all ID register fields that are
+reported as being writable by the kernel, and that are known to the
+QEMU instance. Therefore, the same QEMU binary may expose different
+properties when run under a different kernel.
+
+To find out all available writable ID register fields, use the
+``query-cpu-model-expansion`` QMP command::
+
+  (QEMU) query-cpu-model-expansion type=full model={"name":"host"}
+  {"return": {
+   "model": {"name": "host", "props": {
+   "SYSREG_ID_AA64PFR0_EL1_EL3": 1, "SYSREG_ID_AA64ISAR2_EL1_CLRBHB": 0,
+   "SYSREG_CTR_EL0_L1Ip": 3, "SYSREG_CTR_EL0_DminLine": 4,
+   "SYSREG_ID_AA64MMFR0_EL1_BIGEND": 1, "SYSREG_ID_AA64MMFR1_EL1_ECBHB": 0,
+   "SYSREG_ID_AA64MMFR2_EL1_CnP": 1, "SYSREG_ID_DFR0_EL1_PerfMon": 4,
+   "SYSREG_ID_AA64PFR0_EL1_DIT": 0, "SYSREG_ID_AA64MMFR1_EL1_HAFDBS": 2,
+   "SYSREG_ID_AA64ISAR0_EL1_FHM": 0, "SYSREG_ID_AA64ISAR2_EL1_CSSC": 0,
+   "SYSREG_ID_AA64ISAR0_EL1_DP": 1, (...)
+   }}}}
+
+If a certain field in an ID register does not show up in this list, it
+is not writable with the specific host kernel.
+
+A note on compatibility
+-----------------------
+
+A common use case for providing a defined set of ID register values is
+to be able to present a fixed set of features to a guest, often referred
+to as "stable guest ABI". This may take the form of ironing out differences
+between two similar CPUs with the intention of being able to migrate
+between machines with those CPUs, or providing the same CPU across Linux
+kernel updates on the host.
+
+Over the course of time, the Linux kernel is changing the set of ID register
+fields that are writable by userspace. Newly introduced writable ID
+registers should be initialized to 0 to ensure compatibility. However, ID
+registers that have already been introduced that undergo a change as to
+which fields are writable may introduce incompatibilities that need to be
+addressed on a case-by-case basis for the systems that you wish to migrate
+inbetween.
+
+A note on Arm CPU features (FEAT_xxx)
+-------------------------------------
+
+Configuring CPUs is done on a feature level on other architectures, and this
+would imply configuring FEAT_xxx values on Arm. However, differences between
+CPUs may not map to FEAT_xxx, but to differences in other registers in the
+ID register range; for example, differences in the cache architecture exposed
+via ``CTR_EL0``. We therefore cannot rely on configuration via FEAT_xxx. A
+feature-based interface more similar to other architectures may be implemented
+on top of the ID register interface in the future.
-- 
2.53.0

[RFC PATCH v7 17/18] target/arm/kvm: add utility to write idregs in scratch vcpu

[Eric Auger]

Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
 target/arm/kvm_arm.h    |  3 +++
 target/arm/kvm-stub.c   |  6 +++++
 target/arm/kvm.c        | 51 +++++++++++++++++++++++++++++++++++++++++
 target/arm/trace-events |  1 +
 4 files changed, 61 insertions(+)

diff --git a/target/arm/kvm_arm.h b/target/arm/kvm_arm.h
index 2b3474cc36..68e0597ac6 100644
--- a/target/arm/kvm_arm.h
+++ b/target/arm/kvm_arm.h
@@ -250,4 +250,7 @@ void arm_gic_cap_kvm_probe(GICCapability *v2, GICCapability *v3);
  */
 char *kvm_print_register_name(uint64_t regidx);
 
+bool kvm_idreg_write_scratch_vcpu(int cpufd, Visitor *v, const char *name,
+                                  void *opaque, Error **errp);
+
 #endif
diff --git a/target/arm/kvm-stub.c b/target/arm/kvm-stub.c
index 88cbe8d85c..264938d2c5 100644
--- a/target/arm/kvm-stub.c
+++ b/target/arm/kvm-stub.c
@@ -119,3 +119,9 @@ char *kvm_print_register_name(uint64_t regidx)
 {
     g_assert_not_reached();
 }
+
+bool kvm_idreg_write_scratch_vcpu(int cpufd, Visitor *v, const char *name,
+                                  void *opaque, Error **errp)
+{
+    g_assert_not_reached();
+}
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index fceffee262..e95c6e14ec 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -340,6 +340,57 @@ static ARM64SysRegField *get_field(int i, ARM64SysReg *reg)
     return NULL;
 }
 
+bool kvm_idreg_write_scratch_vcpu(int cpufd, Visitor *v, const char *name,
+                                  void *opaque, Error **errp)
+{
+    ARM64SysRegField *field = (ARM64SysRegField *)opaque;
+    uint64_t mask, old_reg_val, new_reg_val, oldfv, newfv;
+    struct kvm_one_reg reg;
+    int lower = field->shift;
+    int length = field->length;
+    int index = field->index;
+    uint64_t kidx;
+    int ret;
+
+    mask = MAKE_64BIT_MASK(lower, length);
+
+    if (!visit_type_uint64(v, name, &newfv, errp)) {
+        return false;
+    }
+
+    kidx = idregs_sysreg_to_kvm_reg(id_register_sysreg[index]);
+    ret = read_sys_reg64(cpufd, &old_reg_val, kidx);
+    if (ret) {
+        error_setg(errp, "failed to read the scratch vcpu value for field %s %m",
+                   field->name);
+        return false;
+    }
+    oldfv = (old_reg_val & mask) >> lower;
+
+    new_reg_val = old_reg_val & ~mask;
+    new_reg_val |= newfv << lower;
+
+    reg.id = kidx;
+    reg.addr = (uintptr_t)&new_reg_val;
+    ret = ioctl(cpufd, KVM_SET_ONE_REG, &reg);
+    if (ret) {
+        error_setg(errp, "failed to apply new value 0x%"PRIx64" for field %s "
+                   "(previous is 0x%"PRIx64"): %m", newfv, field->name, oldfv);
+        return false;
+    } else {
+        uint64_t check_val, actualfv;
+
+        ret = read_sys_reg64(cpufd, &check_val, kidx);
+        if (ret) {
+            error_setg(errp, "failed to read the new reg value: %m");
+            return false;
+        }
+        actualfv = (check_val & mask) >> lower;
+        trace_kvm_idreg_write_scratch_vcpu(field->name, oldfv, newfv, actualfv);
+    }
+    return true;
+}
+
 static void set_sysreg_prop(Object *obj, Visitor *v,
                             const char *name, void *opaque,
                             Error **errp)
diff --git a/target/arm/trace-events b/target/arm/trace-events
index e67730de6b..71a2f5770c 100644
--- a/target/arm/trace-events
+++ b/target/arm/trace-events
@@ -20,6 +20,7 @@ get_sysreg_prop(const char *name, uint64_t value) "%s 0x%"PRIx64
 set_sysreg_prop(const char *name, uint64_t old, uint64_t mask, uint64_t field_value, uint64_t new) "%s old reg value=0x%"PRIx64" mask=0x%"PRIx64" new field value=0x%"PRIx64" new reg value=0x%"PRIx64
 nb_sysreg_props(const char *name, int count) "%s: %d SYSREG properties"
 unexpected_writable_reserved_field(const char *reg_name, const char *field_name, int lower, int upper) "Unexpected writable reserved field: %s.%s [%d,%d], skip it ..."
+kvm_idreg_write_scratch_vcpu(const char *name, uint64_t oldfv, uint64_t newfv, uint64_t actualfv) "successful dry-run for %s old=0x%"PRIx64" new=0x%"PRIx64" actual=0x%"PRIx64
 
 # cpu.c
 arm_cpu_reset(uint64_t mp_aff) "cpu %" PRIu64
-- 
2.53.0

[RFC PATCH v7 18/18] arm-qmp-cmds: introspection for ID register props

[Eric Auger]

From: Cornelia Huck <cohuck@redhat.com>

Implement the capability to query available ID register values by
adding SYSREG_* options and values to the cpu model expansion for the
host model, if available.

Excerpt:
(QEMU) query-cpu-model-expansion type=full model={"name":"host"}
{"return": {"model": {"name": "host", "props": {"SYSREG_ID_AA64PFR0_EL1_EL3": 1,
"SYSREG_ID_AA64ISAR2_EL1_CLRBHB": 0, "SYSREG_CTR_EL0_L1Ip": 3,
"SYSREG_MIDR_EL1_PartNum": 3407, "SYSREG_CTR_EL0_DminLine": 4,
"SYSREG_ID_AA64MMFR0_EL1_PARange": 5, "SYSREG_ID_AA64MMFR1_EL1_ECBHB": 0
../..

This allows the upper stack to detect available writable ID regs and
the "host passthrough model" values.

It also allows to test some ID reg field values:
(QEMU) query-cpu-model-expansion type=full model={"name":"host","props":{"SYSREG_ID_AA64ISAR0_EL1_DP":0x13}}
{"error": {"class": "GenericError", "desc": "idreg SYSREG_ID_AA64ISAR0_EL1_DP set value (0x13) exceeds length of field (4)!"}}

(QEMU) query-cpu-model-expansion type=full model={"name":"host","props":{"SYSREG_ID_AA64ISAR0_EL1_DP":0x2}}
{"error": {"class": "GenericError", "desc": "idreg SYSREG_ID_AA64ISAR0_EL1_DP set value (0x2) does not match any arch valid enum value!"}}

The following checks are performed:
- the value does not exceed the field size
- if the field is associated to enum values, the set value must be one
  of those enum values
- the value is applied against a scratch vcpu making sure the setting is
  not rejected for this host

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

---

v5 -> v6:
- add the write capability
---
 target/arm/arm-qmp-cmds.c | 98 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)

diff --git a/target/arm/arm-qmp-cmds.c b/target/arm/arm-qmp-cmds.c
index 83ec95c290..41fefadcea 100644
--- a/target/arm/arm-qmp-cmds.c
+++ b/target/arm/arm-qmp-cmds.c
@@ -21,6 +21,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/error-report.h"
 #include "qemu/target-info.h"
 #include "hw/core/boards.h"
 #include "kvm_arm.h"
@@ -30,7 +31,10 @@
 #include "qapi/qapi-commands-machine.h"
 #include "qapi/qapi-commands-misc-arm.h"
 #include "qobject/qdict.h"
+#include "qobject/qnum.h"
 #include "qom/qom-qobject.h"
+#include <linux/kvm.h>
+#include "system/kvm.h"
 #include "cpu.h"
 
 static GICCapability *gic_cap_new(int version)
@@ -84,11 +88,14 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
                                                      Error **errp)
 {
     CpuModelExpansionInfo *expansion_info;
+    ObjectPropertyIterator iter;
     const QDict *qdict_in;
+    ObjectProperty *idregprop;
     QDict *qdict_out;
     ObjectClass *oc;
     Object *obj;
     const char *name;
+    int fdarray[3];
     int i;
 
     if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
@@ -133,6 +140,38 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
 
     obj = object_new(object_class_get_name(oc));
 
+    if (kvm_enabled()) {
+        bool pmuv3_supported = kvm_check_extension(kvm_state, KVM_CAP_ARM_PMU_V3);
+        bool sve_supported = kvm_check_extension(kvm_state, KVM_CAP_ARM_SVE);
+        struct kvm_vcpu_init init = { .target = -1, };
+        bool el2_supported = kvm_arm_el2_supported();
+        bool pauth_supported;
+        int ret;
+
+        pauth_supported = kvm_check_extension(kvm_state, KVM_CAP_ARM_PTRAUTH_ADDRESS) &&
+                          kvm_check_extension(kvm_state, KVM_CAP_ARM_PTRAUTH_GENERIC);
+
+        if (sve_supported) {
+            init.features[0] |= 1 << KVM_ARM_VCPU_SVE;
+        }
+        if (el2_supported) {
+            init.features[0] |= 1 << KVM_ARM_VCPU_HAS_EL2;
+        }
+        if (pauth_supported) {
+            init.features[0] |= (1 << KVM_ARM_VCPU_PTRAUTH_ADDRESS |
+                             1 << KVM_ARM_VCPU_PTRAUTH_GENERIC);
+        }
+        if (pmuv3_supported) {
+            init.features[0] |= 1 << KVM_ARM_VCPU_PMU_V3;
+        }
+
+        ret = kvm_arm_create_scratch_host_vcpu(fdarray, &init);
+        if (!ret) {
+            error_setg(errp, "failing creating a scratch vcpu");
+            return NULL;
+        }
+    }
+
     if (model->props) {
         Visitor *visitor;
         Error *err = NULL;
@@ -145,6 +184,49 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
         }
 
         qdict_in = qobject_to(QDict, model->props);
+
+        for (const QDictEntry *entry = qdict_first(qdict_in);
+                 entry != NULL; entry = qdict_next(qdict_in, entry)) {
+            const char *key = qdict_entry_key(entry);
+            QObject *val_obj = qdict_entry_value(entry);
+            ObjectProperty *prop;
+            Visitor *v;
+            bool success;
+            uint64_t val;
+
+            prop = object_property_find(obj, key);
+            if (!prop) {
+                error_setg(errp, "%s does not exist!", key);
+                return NULL;
+            }
+
+            if (!g_str_has_prefix(key, "SYSREG_")) {
+                continue;
+            }
+
+            /* consume the prop to avoid unexpected parameter */
+            if (!visit_type_uint64(visitor, key, &val, errp)) {
+                return NULL;
+            }
+
+            v = qobject_input_visitor_new(val_obj);
+
+            if (!object_property_set(obj, key, v, &err)) {
+                error_propagate(errp, err);
+                visit_free(v);
+                return NULL;
+            }
+
+            success = kvm_idreg_write_scratch_vcpu(fdarray[2], v, key,
+                                                   prop->opaque, &err);
+            if (!success) {
+                error_propagate(errp, err);
+                visit_free(v);
+                return NULL;
+            }
+            visit_free(v);
+        }
+
         i = 0;
         while ((name = cpu_model_advertised_features[i++]) != NULL) {
             if (qdict_get(qdict_in, name)) {
@@ -160,6 +242,10 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
         if (!err) {
             arm_cpu_finalize_features(ARM_CPU(obj), &err);
         }
+
+        if (kvm_enabled()) {
+            kvm_arm_destroy_scratch_host_vcpu(fdarray);
+        }
         visit_end_struct(visitor, NULL);
         visit_free(visitor);
         if (err) {
@@ -190,6 +276,18 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
         }
     }
 
+    object_property_iter_init(&iter, obj);
+
+    while ((idregprop = object_property_iter_next(&iter))) {
+        QObject *value;
+
+        if (!g_str_has_prefix(idregprop->name, "SYSREG_")) {
+            continue;
+        }
+        value = object_property_get_qobject(obj, idregprop->name, &error_abort);
+        qdict_put_obj(qdict_out, idregprop->name, value);
+    }
+
     if (!qdict_size(qdict_out)) {
         qobject_unref(qdict_out);
     } else {
-- 
2.53.0

Re: [RFC PATCH v7 18/18] arm-qmp-cmds: introspection for ID register props

[Markus Armbruster]

Eric Auger <eric.auger@redhat.com> writes:

> From: Cornelia Huck <cohuck@redhat.com>
>
> Implement the capability to query available ID register values by
> adding SYSREG_* options and values to the cpu model expansion for the
> host model, if available.
>
> Excerpt:
> (QEMU) query-cpu-model-expansion type=full model={"name":"host"}

Is this qmp-shell?

> {"return": {"model": {"name": "host", "props": {"SYSREG_ID_AA64PFR0_EL1_EL3": 1,
> "SYSREG_ID_AA64ISAR2_EL1_CLRBHB": 0, "SYSREG_CTR_EL0_L1Ip": 3,
> "SYSREG_MIDR_EL1_PartNum": 3407, "SYSREG_CTR_EL0_DminLine": 4,
> "SYSREG_ID_AA64MMFR0_EL1_PARange": 5, "SYSREG_ID_AA64MMFR1_EL1_ECBHB": 0
> ../..
>
> This allows the upper stack to detect available writable ID regs and
> the "host passthrough model" values.
>
> It also allows to test some ID reg field values:
> (QEMU) query-cpu-model-expansion type=full model={"name":"host","props":{"SYSREG_ID_AA64ISAR0_EL1_DP":0x13}}
> {"error": {"class": "GenericError", "desc": "idreg SYSREG_ID_AA64ISAR0_EL1_DP set value (0x13) exceeds length of field (4)!"}}
>
> (QEMU) query-cpu-model-expansion type=full model={"name":"host","props":{"SYSREG_ID_AA64ISAR0_EL1_DP":0x2}}
> {"error": {"class": "GenericError", "desc": "idreg SYSREG_ID_AA64ISAR0_EL1_DP set value (0x2) does not match any arch valid enum value!"}}

The examples use CPU "host".  Inconvenient for me, because I run into
"The CPU type 'host' requires KVM" when I try to play with them myself.
If you don't actually need "host" here, consider using something that
works more widely, just to help reviewers.

>
> The following checks are performed:
> - the value does not exceed the field size
> - if the field is associated to enum values, the set value must be one
>   of those enum values
> - the value is applied against a scratch vcpu making sure the setting is
>   not rejected for this host
>
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
>
> ---
>
> v5 -> v6:
> - add the write capability
> ---
>  target/arm/arm-qmp-cmds.c | 98 +++++++++++++++++++++++++++++++++++++++
>  1 file changed, 98 insertions(+)
>
> diff --git a/target/arm/arm-qmp-cmds.c b/target/arm/arm-qmp-cmds.c
> index 83ec95c290..41fefadcea 100644
> --- a/target/arm/arm-qmp-cmds.c
> +++ b/target/arm/arm-qmp-cmds.c
> @@ -21,6 +21,7 @@
>   */
>  
>  #include "qemu/osdep.h"
> +#include "qemu/error-report.h"
>  #include "qemu/target-info.h"
>  #include "hw/core/boards.h"
>  #include "kvm_arm.h"
> @@ -30,7 +31,10 @@
>  #include "qapi/qapi-commands-machine.h"
>  #include "qapi/qapi-commands-misc-arm.h"
>  #include "qobject/qdict.h"
> +#include "qobject/qnum.h"
>  #include "qom/qom-qobject.h"
> +#include <linux/kvm.h>
> +#include "system/kvm.h"
>  #include "cpu.h"
>  
>  static GICCapability *gic_cap_new(int version)
> @@ -84,11 +88,14 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
>                                                       Error **errp)
>  {
>      CpuModelExpansionInfo *expansion_info;
> +    ObjectPropertyIterator iter;
>      const QDict *qdict_in;
> +    ObjectProperty *idregprop;
>      QDict *qdict_out;
>      ObjectClass *oc;
>      Object *obj;
>      const char *name;
> +    int fdarray[3];
>      int i;
>  
>      if (type != CPU_MODEL_EXPANSION_TYPE_FULL) {
> @@ -133,6 +140,38 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
>  
>      obj = object_new(object_class_get_name(oc));
>  
> +    if (kvm_enabled()) {
> +        bool pmuv3_supported = kvm_check_extension(kvm_state, KVM_CAP_ARM_PMU_V3);
> +        bool sve_supported = kvm_check_extension(kvm_state, KVM_CAP_ARM_SVE);
> +        struct kvm_vcpu_init init = { .target = -1, };
> +        bool el2_supported = kvm_arm_el2_supported();
> +        bool pauth_supported;
> +        int ret;
> +
> +        pauth_supported = kvm_check_extension(kvm_state, KVM_CAP_ARM_PTRAUTH_ADDRESS) &&
> +                          kvm_check_extension(kvm_state, KVM_CAP_ARM_PTRAUTH_GENERIC);
> +
> +        if (sve_supported) {
> +            init.features[0] |= 1 << KVM_ARM_VCPU_SVE;
> +        }
> +        if (el2_supported) {
> +            init.features[0] |= 1 << KVM_ARM_VCPU_HAS_EL2;
> +        }
> +        if (pauth_supported) {
> +            init.features[0] |= (1 << KVM_ARM_VCPU_PTRAUTH_ADDRESS |
> +                             1 << KVM_ARM_VCPU_PTRAUTH_GENERIC);
> +        }
> +        if (pmuv3_supported) {
> +            init.features[0] |= 1 << KVM_ARM_VCPU_PMU_V3;
> +        }
> +
> +        ret = kvm_arm_create_scratch_host_vcpu(fdarray, &init);
> +        if (!ret) {
> +            error_setg(errp, "failing creating a scratch vcpu");

This error message feels off.  I'd use something like "can't create
FOO".  Still bad, because it provides no clue on why.  What are the
possible failure modes?

> +            return NULL;
> +        }
> +    }
> +
>      if (model->props) {
>          Visitor *visitor;
>          Error *err = NULL;
> @@ -145,6 +184,49 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
>          }
>  
>          qdict_in = qobject_to(QDict, model->props);
> +
> +        for (const QDictEntry *entry = qdict_first(qdict_in);
> +                 entry != NULL; entry = qdict_next(qdict_in, entry)) {
> +            const char *key = qdict_entry_key(entry);
> +            QObject *val_obj = qdict_entry_value(entry);
> +            ObjectProperty *prop;
> +            Visitor *v;
> +            bool success;
> +            uint64_t val;
> +
> +            prop = object_property_find(obj, key);
> +            if (!prop) {
> +                error_setg(errp, "%s does not exist!", key);

Scratch the !

From error_setg()'s contract:

 * The resulting message should be a single phrase, with no newline or
 * trailing punctuation.

Is this error reachable?  How?

> +                return NULL;
> +            }
> +
> +            if (!g_str_has_prefix(key, "SYSREG_")) {
> +                continue;
> +            }
> +
> +            /* consume the prop to avoid unexpected parameter */
> +            if (!visit_type_uint64(visitor, key, &val, errp)) {
> +                return NULL;
> +            }
> +
> +            v = qobject_input_visitor_new(val_obj);
> +
> +            if (!object_property_set(obj, key, v, &err)) {
> +                error_propagate(errp, err);

Pass @errp to object_property_set() and drop the error_propagate()?

> +                visit_free(v);
> +                return NULL;
> +            }
> +
> +            success = kvm_idreg_write_scratch_vcpu(fdarray[2], v, key,
> +                                                   prop->opaque, &err);
> +            if (!success) {
> +                error_propagate(errp, err);

Likewise?

> +                visit_free(v);
> +                return NULL;
> +            }
> +            visit_free(v);
> +        }
> +
>          i = 0;
>          while ((name = cpu_model_advertised_features[i++]) != NULL) {
>              if (qdict_get(qdict_in, name)) {
> @@ -160,6 +242,10 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
>          if (!err) {
>              arm_cpu_finalize_features(ARM_CPU(obj), &err);
>          }
> +
> +        if (kvm_enabled()) {
> +            kvm_arm_destroy_scratch_host_vcpu(fdarray);
> +        }
>          visit_end_struct(visitor, NULL);
>          visit_free(visitor);
>          if (err) {
> @@ -190,6 +276,18 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
>          }
>      }
>  
> +    object_property_iter_init(&iter, obj);
> +
> +    while ((idregprop = object_property_iter_next(&iter))) {
> +        QObject *value;
> +
> +        if (!g_str_has_prefix(idregprop->name, "SYSREG_")) {
> +            continue;
> +        }
> +        value = object_property_get_qobject(obj, idregprop->name, &error_abort);
> +        qdict_put_obj(qdict_out, idregprop->name, value);
> +    }
> +
>      if (!qdict_size(qdict_out)) {
>          qobject_unref(qdict_out);
>      } else {

Re: [RFC PATCH v7 00/18] kvm/arm: Introduce a customizable aarch64 KVM host model

[Khushit Shah]

> On 26 Jul 2026, at 8:59 PM, Eric Auger <eric.auger@redhat.com> wrote:
> 
> !-------------------------------------------------------------------|
>  CAUTION: External Email
> 
> |-------------------------------------------------------------------!
> 
> This series enhances the current host KVM model with capability to
> set writable ID reg fields. 
> 
> Since v6.7 kernel, KVM/arm allows the userspace to overwrite the values
> of a subset of ID regs. The list of writable fields continues to grow.
> The feature ID range is defined as the AArch64 System register space
> with op0==3, op1=={0, 1, 3}, CRn==0, CRm=={0-7}, op2=={0-7}.
> 
> The end goal is to get more flexibility when migrating guests
> between different host hardware.
> 
> QEMU retrieves the writable ID fields from KVM UAPI [1] and
> match them against a generated description of ID regs and their
> named fields that stem from AARCHMRS Registers.json file.
> Current description is based on latest 2026-03 edition.
> The content of the generated files was compared against kernel
> linux/arch/arm64/tools/sysreg file. It is not straightforward
> to have unit tests for python scripts as there are many cases for
> field extraction. 
> 
> For each writable named field a uint64 property is created
> following the "SYSREG_<REG>_<FIELD>" naming convention. REG and
> FIELD names are those described in ARM ARM Reference manual.
> 
> The list of SYSREG_ID properties can be retrieved through the qmp
> monitor using query-cpu-model-expansion [2].
> 
> For the record, Jinqian was able to migrate between Hisilicon KunPeng
> HIP09 and HIP12 chips with this series using this kind of command:
> 
> -cpu host,pauth=off,pmu=off,sve=off,\
> SYSREG_ID_AA64PFR1_EL1_NMI=0x0,\
> SYSREG_ID_AA64ISAR1_EL1_LS64=0x0,\
> SYSREG_ID_AA64ISAR1_EL1_XS=0x0,\
> SYSREG_ID_AA64ISAR1_EL1_LRCPC=0x2,\
> SYSREG_ID_AA64ISAR2_EL1_RPRFM=0x0,\
> SYSREG_ID_AA64ISAR2_EL1_CLRBHB=0x0,\
> SYSREG_ID_AA64ISAR2_EL1_PAC_frac=0x0,\
> SYSREG_ID_AA64ISAR2_EL1_BC=0x0,\
> SYSREG_ID_AA64ISAR2_EL1_RPRES=0x0,\
> SYSREG_ID_AA64ISAR2_EL1_WFxT=0x0,\
> SYSREG_ID_AA64MMFR0_EL1_FGT=0x0,\
> SYSREG_ID_AA64MMFR0_EL1_BigEnd=0x0,\
> SYSREG_ID_AA64MMFR1_EL1_ECBHB=0x0,\
> SYSREG_ID_AA64MMFR1_EL1_CMOW=0x0,\
> SYSREG_ID_AA64MMFR1_EL1_TIDCP1=0x0,\
> SYSREG_ID_AA64MMFR1_EL1_nTLBPA=0x0,\
> SYSREG_ID_AA64MMFR1_EL1_AFP=0x0,\
> SYSREG_ID_AA64MMFR1_EL1_HCX=0x0,\
> SYSREG_ID_AA64MMFR1_EL1_ETS=0x0,\
> SYSREG_ID_AA64MMFR1_EL1_PAN=0x2,\
> SYSREG_ID_AA64MMFR1_EL1_HAFDBS=0x2,\
> SYSREG_ID_AA64MMFR2_EL1_CnP=0x0,\
> SYSREG_ID_AA64MMFR3_EL1_TCRX=0x0,\
> SYSREG_ID_AA64DFR0_EL1_PMUVer=0x6,\
> SYSREG_ID_AA64DFR0_EL1_DebugVer=0x9,\
> SYSREG_ID_AA64DFR0_EL1_DoubleLock=0xf,\
> SYSREG_ID_AA64ZFR0_EL1_F64MM=0x0,\
> SYSREG_ID_AA64ZFR0_EL1_F32MM=0x0,\
> SYSREG_ID_AA64ZFR0_EL1_SM4=0x0,\
> SYSREG_ID_AA64ZFR0_EL1_SHA3=0x0,\
> SYSREG_ID_AA64ZFR0_EL1_BitPerm=0x0,\
> SYSREG_ID_AA64ZFR0_EL1_AES=0x0,\
> SYSREG_ID_AA64ZFR0_EL1_SVEver=0x0,\
> SYSREG_CTR_EL0_L1Ip=0x2 \
> 
> Connie & Eric
> 
> This series can be found at:
> https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_eauger_qemu_tree_arm-2Dcpu-2Dmodel-2Dv7&d=DwIDAg&c=s883GpUCOChKOHiocYtGcg&r=PGWMyignA0NiDmTlyP7vOTHozBws_VN86yrVmSMkBp0&m=xh5u7-r6auXiWQScafdj-0wW70mXB4FhClh58GryHmExkx8uZN-h9j4B2c90Lowd&s=Ro4v_mjoNaLsznyxm781lzXBcRtXTudjibmgIhoJsNM&e= 
> 
> History:
> --------
> v6 -> v7:
> - query-cpu-model-expansion now applies the sysreg props
>  onto a scratch vcpu (POC) allowing a finer validation of settings
>  (not perfect though as init may be revisited depending on
>  settings)
> - Properly handle ValueRange (Khushit)
> - Remove cpu parameter in get_host_cpu_idregs call chain
>  (Khushit)
> 
> v5 -> v6:
> v6 is mostly for Khushit to see how he may work on top
> of this series. It fulfills some of his requirements:
> - Upon Khushit request I added description for enum values
>  and reserved fields
> - set_sysreg_prop checks the input value against enum values
>  if any
> - writable_bitmap is now dispatched into the sysreg descripton
>  and not stored in vcpu state anymore (besides it is VM wide)
> - implemented write for qmp inspection. However this is not
>  yet checked against KVM. That's the next step I think, ie.
>  instantiate a scratch vcpu to test if the field value can be
>  applied?
> - if some inconsistencies between writable mask and idreg
>  field, reserved fields only produce traces
> - this version does not yet fix some reported issues about host
>  supporting nested virt. I will further sync with Khushit.
>  so this is definitively not candidate to be applied, hence the
>  RFC tag.
> 
> Cornelia Huck (3):
>  target/arm/kvm: Retrieve writable ID reg map
>  arm/cpu-features: document ID reg properties
>  arm-qmp-cmds: introspection for ID register props
> 
> Eric Auger (14):
>  scripts: introduce scripts/update-aarch64-cpu-sysregs-header.py
>  target/arm/cpu-sysregs.h.inc: Sort by name alphabetical order
>  target/arm/cpu-sysregs.h.inc: Update with automatic generation
>  arm/cpu: Add infra to handle generated ID register definitions
>  scripts: Introduce scripts/aarch64_sysreg_helpers module
>  scripts: Introduce scripts/update-aarch64-cpu-sysreg-properties.py
>  target/arm/cpu-idregs.h.inc: generate with script
>  target/arm/cpu-idregs.h.inc: Generate enum values
>  arm/kvm: Initialize all writable ID registers from host
>  target/arm/kvm: Introduce kvm_arm_expose_idreg_properties
>  target/arm/cpu: Expose writable ID reg field properties on the kvm
>    host vcpu model
>  target/arm/cpu-idregs.h.inc: Generate reserved fields
>  target/arm/kvm: Ignore and trace unexpected writable reserved fields
>  target/arm/kvm: add utility to write idregs in scratch vcpu
> 
> Shaju Abraham (1):
>  target/arm/cpu_idregs: generate tables for Arm64 ID registers and
>    fields
> 
> docs/system/arm/cpu-features.rst              |  106 +-
> target/arm/cpu-idregs.h                       |   41 +
> target/arm/kvm_arm.h                          |   13 +
> target/arm/cpu-idregs.h.inc                   | 2164 +++++++++++++++++
> target/arm/cpu-sysregs.h.inc                  |   57 +-
> target/arm/arm-qmp-cmds.c                     |   98 +
> target/arm/cpu-idregs.c                       |   96 +
> target/arm/cpu64.c                            |    5 +
> target/arm/kvm-stub.c                         |    6 +
> target/arm/kvm.c                              |  360 ++-
> scripts/aarch64_sysreg_helpers.py             |  109 +
> .../update-aarch64-cpu-sysreg-properties.py   |  290 +++
> scripts/update-aarch64-cpu-sysregs-header.py  |   51 +
> target/arm/meson.build                        |    1 +
> target/arm/trace-events                       |    8 +
> 15 files changed, 3373 insertions(+), 32 deletions(-)
> create mode 100644 target/arm/cpu-idregs.h
> create mode 100644 target/arm/cpu-idregs.h.inc
> create mode 100644 target/arm/cpu-idregs.c
> create mode 100644 scripts/aarch64_sysreg_helpers.py
> create mode 100644 scripts/update-aarch64-cpu-sysreg-properties.py
> create mode 100755 scripts/update-aarch64-cpu-sysregs-header.py
> 
> -- 
> 2.53.0
> 

Hi,

On my box the build is failing with:
[97/2192] Linking target qemu-system-arm
FAILED: qemu-system-arm
cc @qemu-system-arm.rsp
/usr/bin/ld: libsystem_arm.a.p/target_arm_arm-qmp-cmds.c.o: in function `qmp_query_cpu_model_expansion':
/home/ahv/qemu/build/../target/arm/arm-qmp-cmds.c:144:(.text+0x4d4): undefined reference to `kvm_check_extension'
/usr/bin/ld: /home/ahv/qemu/build/../target/arm/arm-qmp-cmds.c:145:(.text+0x4e4): undefined reference to `kvm_check_extension'
/usr/bin/ld: /home/ahv/qemu/build/../target/arm/arm-qmp-cmds.c:151:(.text+0x514): undefined reference to `kvm_check_extension'
/usr/bin/ld: /home/ahv/qemu/build/../target/arm/arm-qmp-cmds.c:168:(.text+0x554): undefined reference to `kvm_arm_create_scratch_host_vcpu'
/usr/bin/ld: /home/ahv/qemu/build/../target/arm/arm-qmp-cmds.c:152:(.text+0x7d4): undefined reference to `kvm_check_extension'
/usr/bin/ld: /home/ahv/qemu/build/../target/arm/arm-qmp-cmds.c:247:(.text+0x8f4): undefined reference to `kvm_arm_destroy_scratch_host_vcpu'
collect2: error: ld returned 1 exit status