[PATCH v5 08/18] target/arm/cpu_idregs: generate tables for Arm64 ID registers and fields

[Eric Auger <eric.auger@redhat.com>]

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>
---
 target/arm/cpu-idregs.c | 50 +++++++++++++++++++++++++++++++++++++++++
 target/arm/meson.build  |  1 +
 2 files changed, 51 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..f79b22680c
--- /dev/null
+++ b/target/arm/cpu-idregs.c
@@ -0,0 +1,50 @@
+/*
+ *   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"
+
+#define IDREG_START(reg) \
+    static ARM64SysRegField reg##_fields[] = {
+
+#define IDREG_END(reg) \
+    };
+
+#define IDREG_FIELD(reg, field, _shift, _length) \
+    { \
+        .name = #field, \
+        .index = reg##_IDX, \
+        .shift = (_shift), \
+        .length = (_length), \
+    },
+#include "cpu-idregs.h.inc"
+#undef IDREG_START
+#undef IDREG_END
+#undef IDREG_FIELD
+
+/* generate an array of top level ID registers */
+#define IDREG_END(reg)
+#define IDREG_FIELD(reg, field, shift, length)
+
+#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"
+};
+#undef IDREG_START
+#undef IDREG_END
+#undef IDREG_FIELD
diff --git a/target/arm/meson.build b/target/arm/meson.build
index 4723f9f170..64d1ec63ab 100644
--- a/target/arm/meson.build
+++ b/target/arm/meson.build
@@ -19,6 +19,7 @@ arm_common_ss.add(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