[Qemu-devel] [PATCH v4 00/12] AArch64 preparation patch set

[Qemu-devel] [PATCH v4 00/12] AArch64 preparation patch set

[John Rigby]

More clean up.
Cross compile tested for aarch64 linux-user target and armhf softmmu.

Alexander Graf (11):
  ARM: Extract the disas struct to a header file
  ARM: Export cpu_env
  ARM: Prepare translation for AArch64 code
  ARM: Add AArch64 translation stub
  AArch64: Add gdb stub
  linux-user: Don't treat aarch64 cpu names specially
  linux-user: Add syscall handling for AArch64
  linux-user: Fix up AArch64 syscall handlers
  linux-user: Add AArch64 support
  ARM: Add aarch64 target to configure
  linux-user: AArch64 requires at least 3.8.0

Andreas Schwab (1):
  linux-user: Add signal handling for AArch64

 configure                              |   8 +
 default-configs/aarch64-linux-user.mak |   3 +
 gdb-xml/aarch64-core.xml               |  46 +++++
 gdb-xml/aarch64-fpu.xml                |  86 +++++++++
 gdbstub.c                              |  53 ++++++
 include/elf.h                          |   2 +
 linux-user/Makefile.objs               |   1 +
 linux-user/aarch64/syscall.h           |  37 ++++
 linux-user/aarch64/syscall_nr.h        | 323 +++++++++++++++++++++++++++++++++
 linux-user/aarch64/target_signal.h     |  33 ++++
 linux-user/aarch64/termbits.h          | 216 ++++++++++++++++++++++
 linux-user/arm/target_signal.h         |   4 +
 linux-user/cpu-uname.c                 |   3 +-
 linux-user/elfload.c                   |  15 +-
 linux-user/main.c                      |  24 +++
 linux-user/signal.c                    | 253 ++++++++++++++++++++++++++
 linux-user/syscall.c                   |  10 +-
 linux-user/syscall_defs.h              |  28 ++-
 target-arm/Makefile.objs               |   1 +
 target-arm/cpu.h                       | 160 +++++++++++-----
 target-arm/machine.c                   |   2 +-
 target-arm/translate-a64.c             | 137 ++++++++++++++
 target-arm/translate.c                 |  50 +++--
 target-arm/translate.h                 |  35 ++++
 24 files changed, 1448 insertions(+), 82 deletions(-)
 create mode 100644 default-configs/aarch64-linux-user.mak
 create mode 100644 gdb-xml/aarch64-core.xml
 create mode 100644 gdb-xml/aarch64-fpu.xml
 create mode 100644 linux-user/aarch64/syscall.h
 create mode 100644 linux-user/aarch64/syscall_nr.h
 create mode 100644 linux-user/aarch64/target_signal.h
 create mode 100644 linux-user/aarch64/termbits.h
 create mode 100644 target-arm/translate-a64.c
 create mode 100644 target-arm/translate.h

-- 
1.8.2.2

[Qemu-devel] [PATCH v4 01/12] ARM: Extract the disas struct to a header file

[John Rigby]

From: Alexander Graf <agraf@suse.de>

We will need to share the disassembly status struct between AArch32 and
AArch64 modes. So put it into a header file that both sides can use.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---
 target-arm/translate.c | 24 +-----------------------
 target-arm/translate.h | 27 +++++++++++++++++++++++++++
 2 files changed, 28 insertions(+), 23 deletions(-)
 create mode 100644 target-arm/translate.h

diff --git a/target-arm/translate.c b/target-arm/translate.c
index a1b7b8c..675773a 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -45,29 +45,7 @@
 
 #define ARCH(x) do { if (!ENABLE_ARCH_##x) goto illegal_op; } while(0)
 
-/* internal defines */
-typedef struct DisasContext {
-    target_ulong pc;
-    int is_jmp;
-    /* Nonzero if this instruction has been conditionally skipped.  */
-    int condjmp;
-    /* The label that will be jumped to when the instruction is skipped.  */
-    int condlabel;
-    /* Thumb-2 conditional execution bits.  */
-    int condexec_mask;
-    int condexec_cond;
-    struct TranslationBlock *tb;
-    int singlestep_enabled;
-    int thumb;
-    int bswap_code;
-#if !defined(CONFIG_USER_ONLY)
-    int user;
-#endif
-    int vfp_enabled;
-    int vec_len;
-    int vec_stride;
-} DisasContext;
-
+#include "translate.h"
 static uint32_t gen_opc_condexec_bits[OPC_BUF_SIZE];
 
 #if defined(CONFIG_USER_ONLY)
diff --git a/target-arm/translate.h b/target-arm/translate.h
new file mode 100644
index 0000000..e727bc6
--- /dev/null
+++ b/target-arm/translate.h
@@ -0,0 +1,27 @@
+#ifndef TARGET_ARM_TRANSLATE_H
+#define TARGET_ARM_TRANSLATE_H
+
+/* internal defines */
+typedef struct DisasContext {
+    target_ulong pc;
+    int is_jmp;
+    /* Nonzero if this instruction has been conditionally skipped.  */
+    int condjmp;
+    /* The label that will be jumped to when the instruction is skipped.  */
+    int condlabel;
+    /* Thumb-2 conditional execution bits.  */
+    int condexec_mask;
+    int condexec_cond;
+    struct TranslationBlock *tb;
+    int singlestep_enabled;
+    int thumb;
+    int bswap_code;
+#if !defined(CONFIG_USER_ONLY)
+    int user;
+#endif
+    int vfp_enabled;
+    int vec_len;
+    int vec_stride;
+} DisasContext;
+
+#endif /* TARGET_ARM_TRANSLATE_H */
-- 
1.8.2.2

[Qemu-devel] [PATCH v4 02/12] ARM: Export cpu_env

[John Rigby]

From: Alexander Graf <agraf@suse.de>

The cpu_env tcg variable will be used by both the AArch32 and AArch64
handling code. Unstaticify it, so that both sides can make use of it.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---

Changes in v3:
- None because consensus alternative to non static arm cpu_env was not
  clean and Richard Henderson pointed out that microblaze was still static
  so no conflict ... yet.

 target-arm/translate.c | 2 +-
 target-arm/translate.h | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/target-arm/translate.c b/target-arm/translate.c
index 675773a..36537bd 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -59,7 +59,7 @@ static uint32_t gen_opc_condexec_bits[OPC_BUF_SIZE];
 #define DISAS_WFI 4
 #define DISAS_SWI 5
 
-static TCGv_ptr cpu_env;
+TCGv_ptr cpu_env;
 /* We reuse the same 64-bit temporaries for efficiency.  */
 static TCGv_i64 cpu_V0, cpu_V1, cpu_M0;
 static TCGv_i32 cpu_R[16];
diff --git a/target-arm/translate.h b/target-arm/translate.h
index e727bc6..8ba1433 100644
--- a/target-arm/translate.h
+++ b/target-arm/translate.h
@@ -24,4 +24,6 @@ typedef struct DisasContext {
     int vec_stride;
 } DisasContext;
 
+extern TCGv_ptr cpu_env;
+
 #endif /* TARGET_ARM_TRANSLATE_H */
-- 
1.8.2.2

[Qemu-devel] [PATCH v4 03/12] ARM: Prepare translation for AArch64 code

[John Rigby]

From: Alexander Graf <agraf@suse.de>

This patch adds all the prerequisites for AArch64 support that didn't
fit into split up patches. It extends important bits in the core cpu
headers to also take AArch64 mode into account.

Add new ARM_TBFLAG_AARCH64_STATE translation buffer flag
indicate an ARMv8 cpu running in aarch64 mode vs aarch32 mode.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---

Changes in v2:
- remove many uses of is_a64 that are not needed since the 32/64 choice
  happens at a higher level
- add ARM_TBFLAG_AARCH64_STATE and aarch64_state

Changes in v3:
- change xregs array len back to 32 as in v1
- sp field in CPUARMState has been removed xregs[31] is now sp
- add comment explaining that 32 and 64 bit arch registers are separate with
  copy semantics handled and exception and return from exception time
- changed arch64_state field in CPUARMState to plain arch64
- test arch64 in is_a64
- fix some checkpatch.pl errors

 include/elf.h          |   2 +
 target-arm/cpu.h       | 140 ++++++++++++++++++++++++++++++++++---------------
 target-arm/machine.c   |   2 +-
 target-arm/translate.c |  15 ++++--
 4 files changed, 112 insertions(+), 47 deletions(-)

diff --git a/include/elf.h b/include/elf.h
index a21ea53..0ff0ea6 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -109,6 +109,8 @@ typedef int64_t  Elf64_Sxword;
 #define EM_OPENRISC     92        /* OpenCores OpenRISC */
 
 #define EM_UNICORE32    110     /* UniCore32 */
+#define EM_AARCH64      183     /* ARM 64-bit architecture */
+
 
 /*
  * This is an interim value that we will use until the committee comes
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 5438444..c486eb5 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -19,13 +19,19 @@
 #ifndef CPU_ARM_H
 #define CPU_ARM_H
 
-#define TARGET_LONG_BITS 32
+#include "config.h"
 
-#define ELF_MACHINE	EM_ARM
+#if defined(TARGET_AARCH64)
+  /* AArch64 definitions */
+#  define TARGET_LONG_BITS 64
+#  define ELF_MACHINE EM_AARCH64
+#else
+#  define TARGET_LONG_BITS 32
+#  define ELF_MACHINE EM_ARM
+#endif
 
 #define CPUArchState struct CPUARMState
 
-#include "config.h"
 #include "qemu-common.h"
 #include "exec/cpu-defs.h"
 
@@ -79,6 +85,16 @@ struct arm_boot_info;
 typedef struct CPUARMState {
     /* Regs for current mode.  */
     uint32_t regs[16];
+
+    /* 32/64 switch only happens when taking and returning from
+     * exceptions so the overlap semantics is taken care of then
+     * instead of having a complicated union. */
+    /* Regs for A64 mode.  */
+    uint64_t xregs[32];
+    uint64_t pc;
+    uint32_t pstate;
+    uint32_t aarch64; /* 1 if CPU is in aarch64 state */
+
     /* Frequently accessed CPSR bits are stored separately for efficiency.
        This contains all the other bits.  Use cpsr_{read,write} to access
        the whole CPSR.  */
@@ -154,6 +170,11 @@ typedef struct CPUARMState {
         uint32_t c15_power_control; /* power control */
     } cp15;
 
+    /* System registers (AArch64) */
+    struct {
+        uint64_t tpidr_el0;
+    } sr;
+
     struct {
         uint32_t other_sp;
         uint32_t vecbase;
@@ -170,7 +191,7 @@ typedef struct CPUARMState {
 
     /* VFP coprocessor state.  */
     struct {
-        float64 regs[32];
+        float64 regs[64];
 
         uint32_t xregs[16];
         /* We store these fpcsr fields separately for convenience.  */
@@ -240,6 +261,24 @@ int bank_number(int mode);
 void switch_mode(CPUARMState *, int);
 uint32_t do_arm_semihosting(CPUARMState *env);
 
+static inline bool is_a64(CPUARMState *env)
+{
+#ifdef TARGET_AARCH64
+    return env->aarch64;
+#else
+    return false;
+#endif
+}
+
+#define PSTATE_N_SHIFT 3
+#define PSTATE_N  (1 << PSTATE_N_SHIFT)
+#define PSTATE_Z_SHIFT 2
+#define PSTATE_Z  (1 << PSTATE_Z_SHIFT)
+#define PSTATE_C_SHIFT 1
+#define PSTATE_C  (1 << PSTATE_C_SHIFT)
+#define PSTATE_V_SHIFT 0
+#define PSTATE_V  (1 << PSTATE_V_SHIFT)
+
 /* you can call this signal handler from your SIGBUS and SIGSEGV
    signal handlers to inform the virtual CPU of exceptions. non zero
    is returned if the signal was handled by the virtual CPU.  */
@@ -623,8 +662,13 @@ static inline bool cp_access_ok(CPUARMState *env,
 #define TARGET_PAGE_BITS 10
 #endif
 
-#define TARGET_PHYS_ADDR_SPACE_BITS 40
-#define TARGET_VIRT_ADDR_SPACE_BITS 32
+#if defined(TARGET_AARCH64)
+#  define TARGET_PHYS_ADDR_SPACE_BITS 64
+#  define TARGET_VIRT_ADDR_SPACE_BITS 64
+#else
+#  define TARGET_PHYS_ADDR_SPACE_BITS 40
+#  define TARGET_VIRT_ADDR_SPACE_BITS 32
+#endif
 
 static inline CPUARMState *cpu_init(const char *cpu_model)
 {
@@ -661,21 +705,23 @@ static inline void cpu_clone_regs(CPUARMState *env, target_ulong newsp)
 #include "exec/cpu-all.h"
 
 /* Bit usage in the TB flags field: */
-#define ARM_TBFLAG_THUMB_SHIFT      0
-#define ARM_TBFLAG_THUMB_MASK       (1 << ARM_TBFLAG_THUMB_SHIFT)
-#define ARM_TBFLAG_VECLEN_SHIFT     1
-#define ARM_TBFLAG_VECLEN_MASK      (0x7 << ARM_TBFLAG_VECLEN_SHIFT)
-#define ARM_TBFLAG_VECSTRIDE_SHIFT  4
-#define ARM_TBFLAG_VECSTRIDE_MASK   (0x3 << ARM_TBFLAG_VECSTRIDE_SHIFT)
-#define ARM_TBFLAG_PRIV_SHIFT       6
-#define ARM_TBFLAG_PRIV_MASK        (1 << ARM_TBFLAG_PRIV_SHIFT)
-#define ARM_TBFLAG_VFPEN_SHIFT      7
-#define ARM_TBFLAG_VFPEN_MASK       (1 << ARM_TBFLAG_VFPEN_SHIFT)
-#define ARM_TBFLAG_CONDEXEC_SHIFT   8
-#define ARM_TBFLAG_CONDEXEC_MASK    (0xff << ARM_TBFLAG_CONDEXEC_SHIFT)
-#define ARM_TBFLAG_BSWAP_CODE_SHIFT 16
-#define ARM_TBFLAG_BSWAP_CODE_MASK  (1 << ARM_TBFLAG_BSWAP_CODE_SHIFT)
-/* Bits 31..17 are currently unused. */
+#define ARM_TBFLAG_THUMB_SHIFT         0
+#define ARM_TBFLAG_THUMB_MASK          (1 << ARM_TBFLAG_THUMB_SHIFT)
+#define ARM_TBFLAG_VECLEN_SHIFT        1
+#define ARM_TBFLAG_VECLEN_MASK         (0x7 << ARM_TBFLAG_VECLEN_SHIFT)
+#define ARM_TBFLAG_VECSTRIDE_SHIFT     4
+#define ARM_TBFLAG_VECSTRIDE_MASK      (0x3 << ARM_TBFLAG_VECSTRIDE_SHIFT)
+#define ARM_TBFLAG_PRIV_SHIFT          6
+#define ARM_TBFLAG_PRIV_MASK           (1 << ARM_TBFLAG_PRIV_SHIFT)
+#define ARM_TBFLAG_VFPEN_SHIFT         7
+#define ARM_TBFLAG_VFPEN_MASK          (1 << ARM_TBFLAG_VFPEN_SHIFT)
+#define ARM_TBFLAG_CONDEXEC_SHIFT      8
+#define ARM_TBFLAG_CONDEXEC_MASK       (0xff << ARM_TBFLAG_CONDEXEC_SHIFT)
+#define ARM_TBFLAG_BSWAP_CODE_SHIFT    16
+#define ARM_TBFLAG_BSWAP_CODE_MASK     (1 << ARM_TBFLAG_BSWAP_CODE_SHIFT)
+#define ARM_TBFLAG_AARCH64_STATE_SHIFT 17
+#define ARM_TBFLAG_AARCH64_STATE_MASK  (1 << ARM_TBFLAG_AARCH64_STATE_SHIFT)
+/* Bits 31..18 are currently unused. */
 
 /* some convenience accessor macros */
 #define ARM_TBFLAG_THUMB(F) \
@@ -692,29 +738,37 @@ static inline void cpu_clone_regs(CPUARMState *env, target_ulong newsp)
     (((F) & ARM_TBFLAG_CONDEXEC_MASK) >> ARM_TBFLAG_CONDEXEC_SHIFT)
 #define ARM_TBFLAG_BSWAP_CODE(F) \
     (((F) & ARM_TBFLAG_BSWAP_CODE_MASK) >> ARM_TBFLAG_BSWAP_CODE_SHIFT)
+#define ARM_TBFLAG_AARCH64_STATE(F) \
+    (((F) & ARM_TBFLAG_AARCH64_STATE_MASK) >> ARM_TBFLAG_AARCH64_STATE_SHIFT)
 
 static inline void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
                                         target_ulong *cs_base, int *flags)
 {
-    int privmode;
-    *pc = env->regs[15];
-    *cs_base = 0;
-    *flags = (env->thumb << ARM_TBFLAG_THUMB_SHIFT)
-        | (env->vfp.vec_len << ARM_TBFLAG_VECLEN_SHIFT)
-        | (env->vfp.vec_stride << ARM_TBFLAG_VECSTRIDE_SHIFT)
-        | (env->condexec_bits << ARM_TBFLAG_CONDEXEC_SHIFT)
-        | (env->bswap_code << ARM_TBFLAG_BSWAP_CODE_SHIFT);
-    if (arm_feature(env, ARM_FEATURE_M)) {
-        privmode = !((env->v7m.exception == 0) && (env->v7m.control & 1));
+    if (is_a64(env)) {
+        *pc = env->pc;
+        *flags = env->aarch64 << ARM_TBFLAG_AARCH64_STATE_SHIFT;
     } else {
-        privmode = (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR;
-    }
-    if (privmode) {
-        *flags |= ARM_TBFLAG_PRIV_MASK;
-    }
-    if (env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)) {
-        *flags |= ARM_TBFLAG_VFPEN_MASK;
+        int privmode;
+        *pc = env->regs[15];
+        *flags = (env->thumb << ARM_TBFLAG_THUMB_SHIFT)
+            | (env->vfp.vec_len << ARM_TBFLAG_VECLEN_SHIFT)
+            | (env->vfp.vec_stride << ARM_TBFLAG_VECSTRIDE_SHIFT)
+            | (env->condexec_bits << ARM_TBFLAG_CONDEXEC_SHIFT)
+            | (env->bswap_code << ARM_TBFLAG_BSWAP_CODE_SHIFT);
+        if (arm_feature(env, ARM_FEATURE_M)) {
+            privmode = !((env->v7m.exception == 0) && (env->v7m.control & 1));
+        } else {
+            privmode = (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR;
+        }
+        if (privmode) {
+            *flags |= ARM_TBFLAG_PRIV_MASK;
+        }
+        if (env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)) {
+            *flags |= ARM_TBFLAG_VFPEN_MASK;
+        }
     }
+
+    *cs_base = 0;
 }
 
 static inline bool cpu_has_work(CPUState *cpu)
@@ -727,11 +781,15 @@ static inline bool cpu_has_work(CPUState *cpu)
 
 static inline void cpu_pc_from_tb(CPUARMState *env, TranslationBlock *tb)
 {
-    env->regs[15] = tb->pc;
+    if (ARM_TBFLAG_AARCH64_STATE(tb->flags)) {
+        env->pc = tb->pc;
+    } else {
+        env->regs[15] = tb->pc;
+    }
 }
 
 /* Load an instruction and return it in the standard little-endian order */
-static inline uint32_t arm_ldl_code(CPUARMState *env, uint32_t addr,
+static inline uint32_t arm_ldl_code(CPUARMState *env, target_ulong addr,
                                     bool do_swap)
 {
     uint32_t insn = cpu_ldl_code(env, addr);
@@ -742,7 +800,7 @@ static inline uint32_t arm_ldl_code(CPUARMState *env, uint32_t addr,
 }
 
 /* Ditto, for a halfword (Thumb) instruction */
-static inline uint16_t arm_lduw_code(CPUARMState *env, uint32_t addr,
+static inline uint16_t arm_lduw_code(CPUARMState *env, target_ulong addr,
                                      bool do_swap)
 {
     uint16_t insn = cpu_lduw_code(env, addr);
diff --git a/target-arm/machine.c b/target-arm/machine.c
index 4dd057c..1718368 100644
--- a/target-arm/machine.c
+++ b/target-arm/machine.c
@@ -39,7 +39,7 @@ static const VMStateDescription vmstate_vfp = {
     .minimum_version_id = 2,
     .minimum_version_id_old = 2,
     .fields = (VMStateField[]) {
-        VMSTATE_FLOAT64_ARRAY(env.vfp.regs, ARMCPU, 32),
+        VMSTATE_FLOAT64_ARRAY(env.vfp.regs, ARMCPU, 64),
         /* The xregs array is a little awkward because element 1 (FPSCR)
          * requires a specific accessor, so we have to split it up in
          * the vmstate:
diff --git a/target-arm/translate.c b/target-arm/translate.c
index 36537bd..66d4892 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -9750,7 +9750,7 @@ static inline void gen_intermediate_code_internal(CPUARMState *env,
     uint16_t *gen_opc_end;
     int j, lj;
     target_ulong pc_start;
-    uint32_t next_page_start;
+    target_ulong next_page_start;
     int num_insns;
     int max_insns;
 
@@ -9838,7 +9838,7 @@ static inline void gen_intermediate_code_internal(CPUARMState *env,
         /* Intercept jump to the magic kernel page.  */
         if (dc->pc >= 0xffff0000) {
             /* We always get here via a jump, so know we are not in a
-               conditional execution block.  */
+                conditional execution block.  */
             gen_exception(EXCP_KERNEL_TRAP);
             dc->is_jmp = DISAS_UPDATE;
             break;
@@ -9846,7 +9846,7 @@ static inline void gen_intermediate_code_internal(CPUARMState *env,
 #else
         if (dc->pc >= 0xfffffff0 && IS_M(env)) {
             /* We always get here via a jump, so know we are not in a
-               conditional execution block.  */
+                conditional execution block.  */
             gen_exception(EXCP_EXCEPTION_EXIT);
             dc->is_jmp = DISAS_UPDATE;
             break;
@@ -9905,7 +9905,8 @@ static inline void gen_intermediate_code_internal(CPUARMState *env,
         }
 
         if (tcg_check_temp_count()) {
-            fprintf(stderr, "TCG temporary leak before %08x\n", dc->pc);
+            fprintf(stderr, "TCG temporary leak before "TARGET_FMT_lx"\n",
+                    dc->pc);
         }
 
         /* Translation stops when a conditional branch is encountered.
@@ -10075,6 +10076,10 @@ void cpu_dump_state(CPUARMState *env, FILE *f, fprintf_function cpu_fprintf,
 
 void restore_state_to_opc(CPUARMState *env, TranslationBlock *tb, int pc_pos)
 {
-    env->regs[15] = tcg_ctx.gen_opc_pc[pc_pos];
+    if (is_a64(env)) {
+        env->pc = tcg_ctx.gen_opc_pc[pc_pos];
+    } else {
+        env->regs[15] = tcg_ctx.gen_opc_pc[pc_pos];
+    }
     env->condexec_bits = gen_opc_condexec_bits[pc_pos];
 }
-- 
1.8.2.2

[Qemu-devel] [PATCH v4 04/12] ARM: Add AArch64 translation stub

[John Rigby]

From: Alexander Graf <agraf@suse.de>

We should translate AArch64 mode separately from AArch32 mode. In AArch64 mode,
registers look vastly different, instruction encoding is completely different,
basically the system turns into a different machine.

So let's do a simple if() in translate.c to decide whether we can handle the
current code in the legacy AArch32 code or in the new AArch64 code.

So far, the translation always complains about unallocated instructions. There
is no emulator functionality in this patch!

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---

Changes in v2:
- Remove uses of is_a64 that are not needed because arch choice happens at
  a higher level.
- aarch64 register arrays now only have 31 entries with sp and xzr treated as
  special cases.

Changes in v3:
- Register arrays back to 32 entries with sp as register 31.
- Fix some checkpatch.pl issues

 target-arm/Makefile.objs   |   1 +
 target-arm/translate-a64.c | 137 +++++++++++++++++++++++++++++++++++++++++++++
 target-arm/translate.c     |   9 +++
 target-arm/translate.h     |   6 ++
 4 files changed, 153 insertions(+)
 create mode 100644 target-arm/translate-a64.c

diff --git a/target-arm/Makefile.objs b/target-arm/Makefile.objs
index d89b57c..e488edb 100644
--- a/target-arm/Makefile.objs
+++ b/target-arm/Makefile.objs
@@ -3,3 +3,4 @@ obj-$(CONFIG_SOFTMMU) += machine.o
 obj-$(CONFIG_KVM) += kvm.o
 obj-y += translate.o op_helper.o helper.o cpu.o
 obj-y += neon_helper.o iwmmxt_helper.o
+obj-$(TARGET_AARCH64) += translate-a64.o
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
new file mode 100644
index 0000000..29e8937
--- /dev/null
+++ b/target-arm/translate-a64.c
@@ -0,0 +1,137 @@
+/*
+ *  AArch64 translation
+ *
+ *  Copyright (c) 2013 Alexander Graf <agraf@suse.de>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include "cpu.h"
+#include "tcg-op.h"
+#include "qemu/log.h"
+#include "translate.h"
+#include "qemu/host-utils.h"
+
+#include "helper.h"
+#define GEN_HELPER 1
+#include "helper.h"
+
+static TCGv_i64 cpu_X[32];
+static TCGv_i64 cpu_pc;
+static TCGv_i32 pstate;
+
+static const char *regnames[] = {
+    "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",
+    "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15",
+    "x16", "x17", "x18", "x19", "x20", "x21", "x22", "x23",
+    "x24", "x25", "x26", "x27", "x28", "x29", "lr", "sp"
+};
+
+/* initialize TCG globals.  */
+void a64_translate_init(void)
+{
+    int i;
+
+    cpu_pc = tcg_global_mem_new_i64(TCG_AREG0,
+                                    offsetof(CPUARMState, pc),
+                                    "pc");
+    for (i = 0; i < 32; i++) {
+        cpu_X[i] = tcg_global_mem_new_i64(TCG_AREG0,
+                                          offsetof(CPUARMState, xregs[i]),
+                                          regnames[i]);
+    }
+
+    pstate = tcg_global_mem_new_i32(TCG_AREG0,
+                                    offsetof(CPUARMState, pstate),
+                                    "pstate");
+}
+
+void cpu_dump_state_a64(CPUARMState *env, FILE *f, fprintf_function cpu_fprintf,
+                        int flags)
+{
+    int i;
+
+    cpu_fprintf(f, "PC=%016"PRIx64"  SP=%016"PRIx64"\n",
+            env->pc, env->xregs[31]);
+    for (i = 0; i < 31; i++) {
+        cpu_fprintf(f, "X%02d=%016"PRIx64, i, env->xregs[i]);
+        if ((i % 4) == 3) {
+            cpu_fprintf(f, "\n");
+        } else {
+            cpu_fprintf(f, " ");
+        }
+    }
+    cpu_fprintf(f, "PSTATE=%c%c%c%c\n",
+        env->pstate & PSTATE_N ? 'n' : '.',
+        env->pstate & PSTATE_Z ? 'z' : '.',
+        env->pstate & PSTATE_C ? 'c' : '.',
+        env->pstate & PSTATE_V ? 'v' : '.');
+    cpu_fprintf(f, "\n");
+}
+
+void gen_a64_set_pc_im(uint64_t val)
+{
+    tcg_gen_movi_i64(cpu_pc, val);
+}
+
+static void gen_exception(int excp)
+{
+    TCGv_i32 tmp = tcg_temp_new_i32();
+    tcg_gen_movi_i32(tmp, excp);
+    gen_helper_exception(cpu_env, tmp);
+    tcg_temp_free_i32(tmp);
+}
+
+static void gen_exception_insn(DisasContext *s, int offset, int excp)
+{
+    gen_a64_set_pc_im(s->pc - offset);
+    gen_exception(excp);
+    s->is_jmp = DISAS_JUMP;
+}
+
+static void real_unallocated_encoding(DisasContext *s)
+{
+    fprintf(stderr, "Unknown instruction: %#x\n",
+            arm_ldl_code(cpu_single_env, s->pc - 4, s->bswap_code));
+    gen_exception_insn(s, 4, EXCP_UDEF);
+}
+
+#define unallocated_encoding(s) do { \
+    fprintf(stderr, "unallocated encoding at line: %d\n", __LINE__); \
+    real_unallocated_encoding(s); \
+    } while (0)
+
+void disas_a64_insn(CPUARMState *env, DisasContext *s)
+{
+    uint32_t insn;
+
+    insn = arm_ldl_code(env, s->pc, s->bswap_code);
+    s->pc += 4;
+
+    switch ((insn >> 24) & 0x1f) {
+    default:
+        unallocated_encoding(s);
+        break;
+    }
+
+    if (unlikely(s->singlestep_enabled) && (s->is_jmp == DISAS_TB_JUMP)) {
+        /* go through the main loop for single step */
+        s->is_jmp = DISAS_JUMP;
+    }
+}
diff --git a/target-arm/translate.c b/target-arm/translate.c
index 66d4892..02d5a3d 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -112,6 +112,10 @@ void arm_translate_init(void)
         offsetof(CPUARMState, exclusive_info), "exclusive_info");
 #endif
 
+#ifdef TARGET_AARCH64
+    a64_translate_init();
+#endif
+
 #define GEN_HELPER 2
 #include "helper.h"
 }
@@ -10038,6 +10042,11 @@ void cpu_dump_state(CPUARMState *env, FILE *f, fprintf_function cpu_fprintf,
     int i;
     uint32_t psr;
 
+    if (is_a64(env)) {
+        cpu_dump_state_a64(env, f, cpu_fprintf, flags);
+        return;
+    }
+
     for(i=0;i<16;i++) {
         cpu_fprintf(f, "R%02d=%08x", i, env->regs[i]);
         if ((i % 4) == 3)
diff --git a/target-arm/translate.h b/target-arm/translate.h
index 8ba1433..9086e43 100644
--- a/target-arm/translate.h
+++ b/target-arm/translate.h
@@ -26,4 +26,10 @@ typedef struct DisasContext {
 
 extern TCGv_ptr cpu_env;
 
+void a64_translate_init(void);
+void cpu_dump_state_a64(CPUARMState *env, FILE *f,
+        fprintf_function cpu_fprintf, int flags);
+void disas_a64_insn(CPUARMState *env, DisasContext *s);
+void gen_a64_set_pc_im(uint64_t val);
+
 #endif /* TARGET_ARM_TRANSLATE_H */
-- 
1.8.2.2

Re: [Qemu-devel] [PATCH v4 04/12] ARM: Add AArch64 translation stub

[Peter Maydell]

On 14 May 2013 05:32, John Rigby <john.rigby@linaro.org> wrote:
> @@ -10038,6 +10042,11 @@ void cpu_dump_state(CPUARMState *env, FILE *f, fprintf_function cpu_fprintf,
>      int i;
>      uint32_t psr;
>
> +    if (is_a64(env)) {
> +        cpu_dump_state_a64(env, f, cpu_fprintf, flags);
> +        return;
> +    }
> +

This breaks building of the 32 bit ARM target:

  LINK  arm-softmmu/qemu-system-arm
target-arm/translate.o: In function `cpu_dump_state':
/home/petmay01/linaro/qemu-from-laptop/qemu/target-arm/translate.c:10046:
undefined reference to `cpu_dump_state_a64'

because cpu_dump_state_a64() is in a file which is
only built for 64 bit.

thanks
-- PMM

Re: [Qemu-devel] [PATCH v4 04/12] ARM: Add AArch64 translation stub

[Andreas Färber]

Am 20.05.2013 14:57, schrieb Peter Maydell:
> On 14 May 2013 05:32, John Rigby <john.rigby@linaro.org> wrote:
>> @@ -10038,6 +10042,11 @@ void cpu_dump_state(CPUARMState *env, FILE *f, fprintf_function cpu_fprintf,
>>      int i;
>>      uint32_t psr;
>>
>> +    if (is_a64(env)) {
>> +        cpu_dump_state_a64(env, f, cpu_fprintf, flags);
>> +        return;
>> +    }
>> +
> 
> This breaks building of the 32 bit ARM target:
> 
>   LINK  arm-softmmu/qemu-system-arm
> target-arm/translate.o: In function `cpu_dump_state':
> /home/petmay01/linaro/qemu-from-laptop/qemu/target-arm/translate.c:10046:
> undefined reference to `cpu_dump_state_a64'
> 
> because cpu_dump_state_a64() is in a file which is
> only built for 64 bit.

My qom-cpu-10 series may help here, it turns cpu_dump_state() into a
simple helper function calling CPUClass::dump_state(). So a Cortex-A5x
class_init or TARGET_AARCH64 for the base class_init would simply assign
the 64-bit version of the callback, leaving 32-bit target unaffected
(note: I didn't read the whole patch).

Andreas

-- 
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg

Re: [Qemu-devel] [PATCH v4 04/12] ARM: Add AArch64 translation stub

[Peter Maydell]

On 16 June 2013 21:06, Andreas Färber <afaerber@suse.de> wrote:
> My qom-cpu-10 series may help here, it turns cpu_dump_state() into a
> simple helper function calling CPUClass::dump_state(). So a Cortex-A5x
> class_init or TARGET_AARCH64 for the base class_init would simply assign
> the 64-bit version of the callback, leaving 32-bit target unaffected
> (note: I didn't read the whole patch).

Yeah, that would work and be neater than ifdeffery. (the 64 bit
callback would then have to call the 32 bit callback if we're
really in 32 bit mode, but that's not a problem). In the meantime if
this lands before your series it's easy enough to just have an ifdef
that makes cpu_dump_state_a64() a no-op if building the 32 bit binary.
(in fact that's what my current working tree has.)

thanks
-- PMM

[Qemu-devel] [PATCH v4 05/12] AArch64: Add gdb stub

[John Rigby]

From: Alexander Graf <agraf@suse.de>

We want to be able to debug AArch64 guests. So let's add the respective gdb
stub functions and xml descriptions that allow us to do so.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---

Changes in v3:
- fix checkpatch.pl issues

Changes in v4:
- env->sp --> env->xregs[31]

 gdb-xml/aarch64-core.xml | 46 ++++++++++++++++++++++++++
 gdb-xml/aarch64-fpu.xml  | 86 ++++++++++++++++++++++++++++++++++++++++++++++++
 gdbstub.c                | 53 +++++++++++++++++++++++++++++
 3 files changed, 185 insertions(+)
 create mode 100644 gdb-xml/aarch64-core.xml
 create mode 100644 gdb-xml/aarch64-fpu.xml

diff --git a/gdb-xml/aarch64-core.xml b/gdb-xml/aarch64-core.xml
new file mode 100644
index 0000000..e1e9dc3
--- /dev/null
+++ b/gdb-xml/aarch64-core.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2009-2012 Free Software Foundation, Inc.
+     Contributed by ARM Ltd.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!DOCTYPE feature SYSTEM "gdb-target.dtd">
+<feature name="org.gnu.gdb.aarch64.core">
+  <reg name="x0" bitsize="64"/>
+  <reg name="x1" bitsize="64"/>
+  <reg name="x2" bitsize="64"/>
+  <reg name="x3" bitsize="64"/>
+  <reg name="x4" bitsize="64"/>
+  <reg name="x5" bitsize="64"/>
+  <reg name="x6" bitsize="64"/>
+  <reg name="x7" bitsize="64"/>
+  <reg name="x8" bitsize="64"/>
+  <reg name="x9" bitsize="64"/>
+  <reg name="x10" bitsize="64"/>
+  <reg name="x11" bitsize="64"/>
+  <reg name="x12" bitsize="64"/>
+  <reg name="x13" bitsize="64"/>
+  <reg name="x14" bitsize="64"/>
+  <reg name="x15" bitsize="64"/>
+  <reg name="x16" bitsize="64"/>
+  <reg name="x17" bitsize="64"/>
+  <reg name="x18" bitsize="64"/>
+  <reg name="x19" bitsize="64"/>
+  <reg name="x20" bitsize="64"/>
+  <reg name="x21" bitsize="64"/>
+  <reg name="x22" bitsize="64"/>
+  <reg name="x23" bitsize="64"/>
+  <reg name="x24" bitsize="64"/>
+  <reg name="x25" bitsize="64"/>
+  <reg name="x26" bitsize="64"/>
+  <reg name="x27" bitsize="64"/>
+  <reg name="x28" bitsize="64"/>
+  <reg name="x29" bitsize="64"/>
+  <reg name="x30" bitsize="64"/>
+  <reg name="sp" bitsize="64" type="data_ptr"/>
+
+  <reg name="pc" bitsize="64" type="code_ptr"/>
+  <reg name="cpsr" bitsize="32"/>
+</feature>
diff --git a/gdb-xml/aarch64-fpu.xml b/gdb-xml/aarch64-fpu.xml
new file mode 100644
index 0000000..997197e
--- /dev/null
+++ b/gdb-xml/aarch64-fpu.xml
@@ -0,0 +1,86 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2009-2012 Free Software Foundation, Inc.
+     Contributed by ARM Ltd.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!DOCTYPE feature SYSTEM "gdb-target.dtd">
+<feature name="org.gnu.gdb.aarch64.fpu">
+  <vector id="v2d" type="ieee_double" count="2"/>
+  <vector id="v2u" type="uint64" count="2"/>
+  <vector id="v2i" type="int64" count="2"/>
+  <vector id="v4f" type="ieee_single" count="4"/>
+  <vector id="v4u" type="uint32" count="4"/>
+  <vector id="v4i" type="int32" count="4"/>
+  <vector id="v8u" type="uint16" count="8"/>
+  <vector id="v8i" type="int16" count="8"/>
+  <vector id="v16u" type="uint8" count="16"/>
+  <vector id="v16i" type="int8" count="16"/>
+  <vector id="v1u" type="uint128" count="1"/>
+  <vector id="v1i" type="int128" count="1"/>
+  <union id="vnd">
+    <field name="f" type="v2d"/>
+    <field name="u" type="v2u"/>
+    <field name="s" type="v2i"/>
+  </union>
+  <union id="vns">
+    <field name="f" type="v4f"/>
+    <field name="u" type="v4u"/>
+    <field name="s" type="v4i"/>
+  </union>
+  <union id="vnh">
+    <field name="u" type="v8u"/>
+    <field name="s" type="v8i"/>
+  </union>
+  <union id="vnb">
+    <field name="u" type="v16u"/>
+    <field name="s" type="v16i"/>
+  </union>
+  <union id="vnq">
+    <field name="u" type="v1u"/>
+    <field name="s" type="v1i"/>
+  </union>
+  <union id="aarch64v">
+    <field name="d" type="vnd"/>
+    <field name="s" type="vns"/>
+    <field name="h" type="vnh"/>
+    <field name="b" type="vnb"/>
+    <field name="q" type="vnq"/>
+  </union>
+  <reg name="v0" bitsize="128" type="aarch64v" regnum="34"/>
+  <reg name="v1" bitsize="128" type="aarch64v" />
+  <reg name="v2" bitsize="128" type="aarch64v" />
+  <reg name="v3" bitsize="128" type="aarch64v" />
+  <reg name="v4" bitsize="128" type="aarch64v" />
+  <reg name="v5" bitsize="128" type="aarch64v" />
+  <reg name="v6" bitsize="128" type="aarch64v" />
+  <reg name="v7" bitsize="128" type="aarch64v" />
+  <reg name="v8" bitsize="128" type="aarch64v" />
+  <reg name="v9" bitsize="128" type="aarch64v" />
+  <reg name="v10" bitsize="128" type="aarch64v"/>
+  <reg name="v11" bitsize="128" type="aarch64v"/>
+  <reg name="v12" bitsize="128" type="aarch64v"/>
+  <reg name="v13" bitsize="128" type="aarch64v"/>
+  <reg name="v14" bitsize="128" type="aarch64v"/>
+  <reg name="v15" bitsize="128" type="aarch64v"/>
+  <reg name="v16" bitsize="128" type="aarch64v"/>
+  <reg name="v17" bitsize="128" type="aarch64v"/>
+  <reg name="v18" bitsize="128" type="aarch64v"/>
+  <reg name="v19" bitsize="128" type="aarch64v"/>
+  <reg name="v20" bitsize="128" type="aarch64v"/>
+  <reg name="v21" bitsize="128" type="aarch64v"/>
+  <reg name="v22" bitsize="128" type="aarch64v"/>
+  <reg name="v23" bitsize="128" type="aarch64v"/>
+  <reg name="v24" bitsize="128" type="aarch64v"/>
+  <reg name="v25" bitsize="128" type="aarch64v"/>
+  <reg name="v26" bitsize="128" type="aarch64v"/>
+  <reg name="v27" bitsize="128" type="aarch64v"/>
+  <reg name="v28" bitsize="128" type="aarch64v"/>
+  <reg name="v29" bitsize="128" type="aarch64v"/>
+  <reg name="v30" bitsize="128" type="aarch64v"/>
+  <reg name="v31" bitsize="128" type="aarch64v"/>
+  <reg name="fpsr" bitsize="32"/>
+  <reg name="fpcr" bitsize="32"/>
+</feature>
diff --git a/gdbstub.c b/gdbstub.c
index e80e1d3..e85f34a 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -935,6 +935,59 @@ static int cpu_gdb_write_register(CPUSPARCState *env, uint8_t *mem_buf, int n)
     return 8;
 #endif
 }
+#elif defined(TARGET_AARCH64)
+
+#define NUM_CORE_REGS 34
+#define GDB_CORE_XML "aarch64-core.xml"
+
+static int cpu_gdb_read_register(CPUARMState *env, uint8_t *mem_buf, int n)
+{
+    if (n < 31) {
+        /* Core integer register.  */
+        GET_REG64(env->xregs[n]);
+    }
+    switch (n) {
+    case 31:
+        GET_REG64(env->xregs[31]);
+        break;
+    case 32:
+        GET_REG64(env->pc);
+        break;
+    case 33:
+        GET_REG32(env->pstate);
+        break;
+    }
+    /* Unknown register.  */
+    return 0;
+}
+
+static int cpu_gdb_write_register(CPUARMState *env, uint8_t *mem_buf, int n)
+{
+    uint64_t tmp;
+
+    tmp = ldq_p(mem_buf);
+
+    if (n < 31) {
+        /* Core integer register.  */
+        env->xregs[n] = tmp;
+        return 8;
+    }
+    switch (n) {
+    case 31:
+        env->xregs[31] = tmp;
+        return 8;
+    case 32:
+        env->pc = tmp;
+        return 8;
+    case 33:
+        /* CPSR */
+        env->pstate = tmp;
+        return 4;
+    }
+    /* Unknown register.  */
+    return 0;
+}
+
 #elif defined (TARGET_ARM)
 
 /* Old gdb always expect FPA registers.  Newer (xml-aware) gdb only expect
-- 
1.8.2.2

[Qemu-devel] [PATCH v4 06/12] linux-user: Don't treat aarch64 cpu names specially

[John Rigby]

From: Alexander Graf <agraf@suse.de>

32-bit ARM has a lot of different names for different types of CPUs it supports.
On AArch64, we don't have this, so we really don't want to execute the 32-bit
logic. Stub it out for AArch64 linux-user guests.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---
 linux-user/cpu-uname.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/linux-user/cpu-uname.c b/linux-user/cpu-uname.c
index 59cd647..89bdb91 100644
--- a/linux-user/cpu-uname.c
+++ b/linux-user/cpu-uname.c
@@ -30,7 +30,8 @@
  * return here */
 const char *cpu_to_uname_machine(void *cpu_env)
 {
-#ifdef TARGET_ARM
+#if defined(TARGET_ARM) && !defined(TARGET_AARCH64)
+
     /* utsname machine name on linux arm is CPU arch name + endianness, e.g.
      * armv7l; to get a list of CPU arch names from the linux source, use:
      *     grep arch_name: -A1 linux/arch/arm/mm/proc-*.S
-- 
1.8.2.2

[Qemu-devel] [PATCH v4 07/12] linux-user: Add syscall handling for AArch64

[John Rigby]

From: Alexander Graf <agraf@suse.de>

The AArch64 syscall definitions are all publicly available in the Linux
kernel. Let's add them to our linux-user emulation target, so that we
can easily handle AArch64 syscalls.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---

Changes in v3:
- Put aarch64 syscall numbers in a new file
  linux-user/aarch64/syscall_nr.h

 linux-user/aarch64/syscall_nr.h | 323 ++++++++++++++++++++++++++++++++++++++++
 linux-user/main.c               |  15 ++
 2 files changed, 338 insertions(+)
 create mode 100644 linux-user/aarch64/syscall_nr.h

diff --git a/linux-user/aarch64/syscall_nr.h b/linux-user/aarch64/syscall_nr.h
new file mode 100644
index 0000000..743255d
--- /dev/null
+++ b/linux-user/aarch64/syscall_nr.h
@@ -0,0 +1,323 @@
+/*
+ * This file contains the system call numbers.
+ */
+
+#define TARGET_NR_io_setup 0
+#define TARGET_NR_io_destroy 1
+#define TARGET_NR_io_submit 2
+#define TARGET_NR_io_cancel 3
+#define TARGET_NR_io_getevents 4
+#define TARGET_NR_setxattr 5
+#define TARGET_NR_lsetxattr 6
+#define TARGET_NR_fsetxattr 7
+#define TARGET_NR_getxattr 8
+#define TARGET_NR_lgetxattr 9
+#define TARGET_NR_fgetxattr 10
+#define TARGET_NR_listxattr 11
+#define TARGET_NR_llistxattr 12
+#define TARGET_NR_flistxattr 13
+#define TARGET_NR_removexattr 14
+#define TARGET_NR_lremovexattr 15
+#define TARGET_NR_fremovexattr 16
+#define TARGET_NR_getcwd 17
+#define TARGET_NR_lookup_dcookie 18
+#define TARGET_NR_eventfd2 19
+#define TARGET_NR_epoll_create1 20
+#define TARGET_NR_epoll_ctl 21
+#define TARGET_NR_epoll_pwait 22
+#define TARGET_NR_dup 23
+#define TARGET_NR_dup3 24
+#define TARGET_NR_fcntl 25
+#define TARGET_NR_inotify_init1 26
+#define TARGET_NR_inotify_add_watch 27
+#define TARGET_NR_inotify_rm_watch 28
+#define TARGET_NR_ioctl 29
+#define TARGET_NR_ioprio_set 30
+#define TARGET_NR_ioprio_get 31
+#define TARGET_NR_flock 32
+#define TARGET_NR_mknodat 33
+#define TARGET_NR_mkdirat 34
+#define TARGET_NR_unlinkat 35
+#define TARGET_NR_symlinkat 36
+#define TARGET_NR_linkat 37
+#define TARGET_NR_renameat 38
+#define TARGET_NR_umount2 39
+#define TARGET_NR_mount 40
+#define TARGET_NR_pivot_root 41
+#define TARGET_NR_nfsservctl 42
+#define TARGET_NR_statfs 43
+#define TARGET_NR_fstatfs 44
+#define TARGET_NR_truncate 45
+#define TARGET_NR_ftruncate 46
+#define TARGET_NR_fallocate 47
+#define TARGET_NR_faccessat 48
+#define TARGET_NR_chdir 49
+#define TARGET_NR_fchdir 50
+#define TARGET_NR_chroot 51
+#define TARGET_NR_fchmod 52
+#define TARGET_NR_fchmodat 53
+#define TARGET_NR_fchownat 54
+#define TARGET_NR_fchown 55
+#define TARGET_NR_openat 56
+#define TARGET_NR_close 57
+#define TARGET_NR_vhangup 58
+#define TARGET_NR_pipe2 59
+#define TARGET_NR_quotactl 60
+#define TARGET_NR_getdents64 61
+#define TARGET_NR_lseek 62
+#define TARGET_NR_read 63
+#define TARGET_NR_write 64
+#define TARGET_NR_readv 65
+#define TARGET_NR_writev 66
+#define TARGET_NR_pread64 67
+#define TARGET_NR_pwrite64 68
+#define TARGET_NR_preadv 69
+#define TARGET_NR_pwritev 70
+#define TARGET_NR_sendfile 71
+#define TARGET_NR_pselect6 72
+#define TARGET_NR_ppoll 73
+#define TARGET_NR_signalfd4 74
+#define TARGET_NR_vmsplice 75
+#define TARGET_NR_splice 76
+#define TARGET_NR_tee 77
+#define TARGET_NR_readlinkat 78
+#define TARGET_NR_fstatat64 79
+#define TARGET_NR_fstat 80
+#define TARGET_NR_sync 81
+#define TARGET_NR_fsync 82
+#define TARGET_NR_fdatasync 83
+#define TARGET_NR_sync_file_range2 84
+/* #define TARGET_NR_sync_file_range 84 */
+#define TARGET_NR_timerfd_create 85
+#define TARGET_NR_timerfd_settime 86
+#define TARGET_NR_timerfd_gettime 87
+#define TARGET_NR_utimensat 88
+#define TARGET_NR_acct 89
+#define TARGET_NR_capget 90
+#define TARGET_NR_capset 91
+#define TARGET_NR_personality 92
+#define TARGET_NR_exit 93
+#define TARGET_NR_exit_group 94
+#define TARGET_NR_waitid 95
+#define TARGET_NR_set_tid_address 96
+#define TARGET_NR_unshare 97
+#define TARGET_NR_futex 98
+#define TARGET_NR_set_robust_list 99
+#define TARGET_NR_get_robust_list 100
+#define TARGET_NR_nanosleep 101
+#define TARGET_NR_getitimer 102
+#define TARGET_NR_setitimer 103
+#define TARGET_NR_kexec_load 104
+#define TARGET_NR_init_module 105
+#define TARGET_NR_delete_module 106
+#define TARGET_NR_timer_create 107
+#define TARGET_NR_timer_gettime 108
+#define TARGET_NR_timer_getoverrun 109
+#define TARGET_NR_timer_settime 110
+#define TARGET_NR_timer_delete 111
+#define TARGET_NR_clock_settime 112
+#define TARGET_NR_clock_gettime 113
+#define TARGET_NR_clock_getres 114
+#define TARGET_NR_clock_nanosleep 115
+#define TARGET_NR_syslog 116
+#define TARGET_NR_ptrace 117
+#define TARGET_NR_sched_setparam 118
+#define TARGET_NR_sched_setscheduler 119
+#define TARGET_NR_sched_getscheduler 120
+#define TARGET_NR_sched_getparam 121
+#define TARGET_NR_sched_setaffinity 122
+#define TARGET_NR_sched_getaffinity 123
+#define TARGET_NR_sched_yield 124
+#define TARGET_NR_sched_get_priority_max 125
+#define TARGET_NR_sched_get_priority_min 126
+#define TARGET_NR_sched_rr_get_interval 127
+#define TARGET_NR_restart_syscall 128
+#define TARGET_NR_kill 129
+#define TARGET_NR_tkill 130
+#define TARGET_NR_tgkill 131
+#define TARGET_NR_sigaltstack 132
+#define TARGET_NR_rt_sigsuspend 133
+#define TARGET_NR_rt_sigaction 134
+#define TARGET_NR_rt_sigprocmask 135
+#define TARGET_NR_rt_sigpending 136
+#define TARGET_NR_rt_sigtimedwait 137
+#define TARGET_NR_rt_sigqueueinfo 138
+#define TARGET_NR_rt_sigreturn 139
+#define TARGET_NR_setpriority 140
+#define TARGET_NR_getpriority 141
+#define TARGET_NR_reboot 142
+#define TARGET_NR_setregid 143
+#define TARGET_NR_setgid 144
+#define TARGET_NR_setreuid 145
+#define TARGET_NR_setuid 146
+#define TARGET_NR_setresuid 147
+#define TARGET_NR_getresuid 148
+#define TARGET_NR_setresgid 149
+#define TARGET_NR_getresgid 150
+#define TARGET_NR_setfsuid 151
+#define TARGET_NR_setfsgid 152
+#define TARGET_NR_times 153
+#define TARGET_NR_setpgid 154
+#define TARGET_NR_getpgid 155
+#define TARGET_NR_getsid 156
+#define TARGET_NR_setsid 157
+#define TARGET_NR_getgroups 158
+#define TARGET_NR_setgroups 159
+#define TARGET_NR_uname 160
+#define TARGET_NR_sethostname 161
+#define TARGET_NR_setdomainname 162
+#define TARGET_NR_getrlimit 163
+#define TARGET_NR_setrlimit 164
+#define TARGET_NR_getrusage 165
+#define TARGET_NR_umask 166
+#define TARGET_NR_prctl 167
+#define TARGET_NR_getcpu 168
+#define TARGET_NR_gettimeofday 169
+#define TARGET_NR_settimeofday 170
+#define TARGET_NR_adjtimex 171
+#define TARGET_NR_getpid 172
+#define TARGET_NR_getppid 173
+#define TARGET_NR_getuid 174
+#define TARGET_NR_geteuid 175
+#define TARGET_NR_getgid 176
+#define TARGET_NR_getegid 177
+#define TARGET_NR_gettid 178
+#define TARGET_NR_sysinfo 179
+#define TARGET_NR_mq_open 180
+#define TARGET_NR_mq_unlink 181
+#define TARGET_NR_mq_timedsend 182
+#define TARGET_NR_mq_timedreceive 183
+#define TARGET_NR_mq_notify 184
+#define TARGET_NR_mq_getsetattr 185
+#define TARGET_NR_msgget 186
+#define TARGET_NR_msgctl 187
+#define TARGET_NR_msgrcv 188
+#define TARGET_NR_msgsnd 189
+#define TARGET_NR_semget 190
+#define TARGET_NR_semctl 191
+#define TARGET_NR_semtimedop 192
+#define TARGET_NR_semop 193
+#define TARGET_NR_shmget 194
+#define TARGET_NR_shmctl 195
+#define TARGET_NR_shmat 196
+#define TARGET_NR_shmdt 197
+#define TARGET_NR_socket 198
+#define TARGET_NR_socketpair 199
+#define TARGET_NR_bind 200
+#define TARGET_NR_listen 201
+#define TARGET_NR_accept 202
+#define TARGET_NR_connect 203
+#define TARGET_NR_getsockname 204
+#define TARGET_NR_getpeername 205
+#define TARGET_NR_sendto 206
+#define TARGET_NR_recvfrom 207
+#define TARGET_NR_setsockopt 208
+#define TARGET_NR_getsockopt 209
+#define TARGET_NR_shutdown 210
+#define TARGET_NR_sendmsg 211
+#define TARGET_NR_recvmsg 212
+#define TARGET_NR_readahead 213
+#define TARGET_NR_brk 214
+#define TARGET_NR_munmap 215
+#define TARGET_NR_mremap 216
+#define TARGET_NR_add_key 217
+#define TARGET_NR_request_key 218
+#define TARGET_NR_keyctl 219
+#define TARGET_NR_clone 220
+#define TARGET_NR_execve 221
+#define TARGET_NR_mmap 222
+#define TARGET_NR_fadvise64 223
+#define TARGET_NR_swapon 224
+#define TARGET_NR_swapoff 225
+#define TARGET_NR_mprotect 226
+#define TARGET_NR_msync 227
+#define TARGET_NR_mlock 228
+#define TARGET_NR_munlock 229
+#define TARGET_NR_mlockall 230
+#define TARGET_NR_munlockall 231
+#define TARGET_NR_mincore 232
+#define TARGET_NR_madvise 233
+#define TARGET_NR_remap_file_pages 234
+#define TARGET_NR_mbind 235
+#define TARGET_NR_get_mempolicy 236
+#define TARGET_NR_set_mempolicy 237
+#define TARGET_NR_migrate_pages 238
+#define TARGET_NR_move_pages 239
+#define TARGET_NR_rt_tgsigqueueinfo 240
+#define TARGET_NR_perf_event_open 241
+#define TARGET_NR_accept4 242
+#define TARGET_NR_recvmmsg 243
+#define TARGET_NR_arch_specific_syscall 244
+#define TARGET_NR_wait4 260
+#define TARGET_NR_prlimit64 261
+#define TARGET_NR_fanotify_init 262
+#define TARGET_NR_fanotify_mark 263
+#define TARGET_NR_name_to_handle_at         264
+#define TARGET_NR_open_by_handle_at         265
+#define TARGET_NR_clock_adjtime 266
+#define TARGET_NR_syncfs 267
+#define TARGET_NR_setns 268
+#define TARGET_NR_sendmmsg 269
+#define TARGET_NR_process_vm_readv 270
+#define TARGET_NR_process_vm_writev 271
+#define TARGET_NR_kcmp 272
+#define TARGET_NR_finit_module 273
+#define TARGET_NR_open 1024
+#define TARGET_NR_link 1025
+#define TARGET_NR_unlink 1026
+#define TARGET_NR_mknod 1027
+#define TARGET_NR_chmod 1028
+#define TARGET_NR_chown 1029
+#define TARGET_NR_mkdir 1030
+#define TARGET_NR_rmdir 1031
+#define TARGET_NR_lchown 1032
+#define TARGET_NR_access 1033
+#define TARGET_NR_rename 1034
+#define TARGET_NR_readlink 1035
+#define TARGET_NR_symlink 1036
+#define TARGET_NR_utimes 1037
+#define TARGET_NR_stat 1038
+#define TARGET_NR_lstat 1039
+#define TARGET_NR_pipe 1040
+#define TARGET_NR_dup2 1041
+#define TARGET_NR_epoll_create 1042
+#define TARGET_NR_inotify_init 1043
+#define TARGET_NR_eventfd 1044
+#define TARGET_NR_signalfd 1045
+#define TARGET_NR_sendfile64 1046
+#define TARGET_NR_ftruncate64 1047
+#define TARGET_NR_truncate64 1048
+#define TARGET_NR_stat64 1049
+#define TARGET_NR_lstat64 1050
+#define TARGET_NR_fstat64 1051
+#define TARGET_NR_fcntl64 1052
+/* #define TARGET_NR_fadvise64 1053 */
+#define TARGET_NR_newfstatat 1054
+#define TARGET_NR_fstatfs64 1055
+#define TARGET_NR_statfs64 1056
+#define TARGET_NR_lseek64 1057
+#define TARGET_NR_mmap64 1058
+#define TARGET_NR_alarm 1059
+#define TARGET_NR_getpgrp 1060
+#define TARGET_NR_pause 1061
+#define TARGET_NR_time 1062
+#define TARGET_NR_utime 1063
+#define TARGET_NR_creat 1064
+#define TARGET_NR_getdents 1065
+#define TARGET_NR_futimesat 1066
+#define TARGET_NR_select 1067
+#define TARGET_NR_poll 1068
+#define TARGET_NR_epoll_wait 1069
+#define TARGET_NR_ustat 1070
+#define TARGET_NR_vfork 1071
+#define TARGET_NR_oldwait4 1072
+#define TARGET_NR_recv 1073
+#define TARGET_NR_send 1074
+#define TARGET_NR_bdflush 1075
+#define TARGET_NR_umount 1076
+#define TARGET_NR_uselib 1077
+#define TARGET_NR__sysctl 1078
+#define TARGET_NR_fork 1079
+#define TARGET_NR_syscalls (__NR_fork+1)
+
+#define TARGET_NR_sigreturn 1999
diff --git a/linux-user/main.c b/linux-user/main.c
index b97b8cf..20fac12 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -700,7 +700,9 @@ void cpu_loop(CPUARMState *env)
 {
     CPUState *cs = CPU(arm_env_get_cpu(env));
     int trapnr;
+#ifndef TARGET_AARCH64
     unsigned int n, insn;
+#endif
     target_siginfo_t info;
     uint32_t addr;
 
@@ -783,6 +785,18 @@ void cpu_loop(CPUARMState *env)
         case EXCP_SWI:
         case EXCP_BKPT:
             {
+#ifdef TARGET_AARCH64
+                env->xregs[0] = do_syscall(env,
+                                           env->xregs[8],
+                                           env->xregs[0],
+                                           env->xregs[1],
+                                           env->xregs[2],
+                                           env->xregs[3],
+                                           env->xregs[4],
+                                           env->xregs[5],
+                                           0, 0);
+#else
+
                 env->eabi = 1;
                 /* system call */
                 if (trapnr == EXCP_BKPT) {
@@ -853,6 +867,7 @@ void cpu_loop(CPUARMState *env)
                 } else {
                     goto error;
                 }
+#endif
             }
             break;
         case EXCP_INTERRUPT:
-- 
1.8.2.2

[Qemu-devel] [PATCH v4 08/12] linux-user: Fix up AArch64 syscall handlers

[John Rigby]

From: Alexander Graf <agraf@suse.de>

Some syscall handlers have special code for ARM enabled that we don't
need on AArch64. Exclude AArch64 in those cases. In other places we
can share struct definitions with other targets or have to provide our
own.

With this patch applied, most syscall definitions in linux-user should
be sound for AArch64.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---
 linux-user/syscall.c      |  5 +++--
 linux-user/syscall_defs.h | 28 ++++++++++++++++++++++++++--
 2 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 30e93bc..3345508 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4858,7 +4858,7 @@ static inline abi_long host_to_target_stat64(void *cpu_env,
                                              abi_ulong target_addr,
                                              struct stat *host_st)
 {
-#ifdef TARGET_ARM
+#if defined(TARGET_ARM) && defined(TARGET_ABI32)
     if (((CPUARMState *)cpu_env)->eabi) {
         struct target_eabi_stat64 *target_st;
 
@@ -6490,7 +6490,8 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
 #endif
 #ifdef TARGET_NR_mmap
     case TARGET_NR_mmap:
-#if (defined(TARGET_I386) && defined(TARGET_ABI32)) || defined(TARGET_ARM) || \
+#if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \
+    (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \
     defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \
     || defined(TARGET_S390X)
         {
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 92c01a9..08f7559 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -1137,7 +1137,8 @@ struct target_winsize {
 #define TARGET_MAP_UNINITIALIZED 0x4000000	/* for anonymous mmap, memory could be uninitialized */
 #endif
 
-#if (defined(TARGET_I386) && defined(TARGET_ABI32)) || defined(TARGET_ARM) \
+#if (defined(TARGET_I386) && defined(TARGET_ABI32)) \
+    || (defined(TARGET_ARM) && defined(TARGET_ABI32)) \
     || defined(TARGET_CRIS) || defined(TARGET_UNICORE32) \
     || defined(TARGET_OPENRISC)
 struct target_stat {
@@ -1836,6 +1837,28 @@ struct target_stat {
     abi_long       st_blocks;
     abi_ulong  __unused[3];
 };
+#elif defined(TARGET_AARCH64)
+struct target_stat {
+    abi_ulong  st_dev;
+    abi_ulong  st_ino;
+    unsigned int st_mode;
+    unsigned int st_nlink;
+    unsigned int   st_uid;
+    unsigned int   st_gid;
+    abi_ulong  st_rdev;
+    abi_ulong  _pad1;
+    abi_long  st_size;
+    int        st_blksize;
+    int        __pad2;
+    abi_long   st_blocks;
+    abi_long  target_st_atime;
+    abi_ulong  target_st_atime_nsec;
+    abi_long  target_st_mtime;
+    abi_ulong  target_st_mtime_nsec;
+    abi_long  target_st_ctime;
+    abi_ulong  target_st_ctime_nsec;
+    unsigned int __unused[2];
+};
 #elif defined(TARGET_OPENRISC)
 struct target_stat {
     abi_ulong st_dev;
@@ -1918,7 +1941,8 @@ struct target_statfs64 {
 	uint32_t	f_spare[6];
 };
 #elif (defined(TARGET_PPC64) || defined(TARGET_X86_64) || \
-       defined(TARGET_SPARC64)) && !defined(TARGET_ABI32)
+       defined(TARGET_SPARC64) || defined(TARGET_AARCH64)) && \
+       !defined(TARGET_ABI32)
 struct target_statfs {
 	abi_long f_type;
 	abi_long f_bsize;
-- 
1.8.2.2

[Qemu-devel] [PATCH v4 09/12] linux-user: Add signal handling for AArch64

[John Rigby]

From: Andreas Schwab <schwab@suse.de>

This patch adds signal handling for AArch64. The code is based on the
respective source in the Linux kernel.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---

Changes in v3:
- Remove unneeded __{put,get}__user error checking
- Fix checkpatch.pl issues

Changes in v4:
- env->sp --> env->xregs[31]

 linux-user/arm/target_signal.h |   4 +
 linux-user/signal.c            | 253 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 257 insertions(+)

diff --git a/linux-user/arm/target_signal.h b/linux-user/arm/target_signal.h
index 2b32813..afc8698 100644
--- a/linux-user/arm/target_signal.h
+++ b/linux-user/arm/target_signal.h
@@ -23,7 +23,11 @@ typedef struct target_sigaltstack {
 
 static inline abi_ulong get_sp_from_cpustate(CPUARMState *state)
 {
+#ifdef TARGET_AARCH64
+   return state->sp;
+#else
    return state->regs[13];
+#endif
 }
 
 #endif /* TARGET_SIGNAL_H */
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 1055507..8bdc93d 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -1090,6 +1090,259 @@ badframe:
 	return 0;
 }
 
+#elif defined(TARGET_AARCH64)
+
+struct target_sigcontext {
+    uint64_t fault_address;
+    /* AArch64 registers */
+    uint64_t regs[31];
+    uint64_t sp;
+    uint64_t pc;
+    uint64_t pstate;
+    /* 4K reserved for FP/SIMD state and future expansion */
+    char __reserved[4096] __attribute__((__aligned__(16)));
+};
+
+struct target_ucontext {
+    abi_ulong tuc_flags;
+    abi_ulong tuc_link;
+    target_stack_t tuc_stack;
+    target_sigset_t tuc_sigmask;
+    /* glibc uses a 1024-bit sigset_t */
+    char __unused[1024 / 8 - sizeof(target_sigset_t)];
+    /* last for future expansion */
+    struct target_sigcontext tuc_mcontext;
+};
+
+/*
+ * Header to be used at the beginning of structures extending the user
+ * context. Such structures must be placed after the rt_sigframe on the stack
+ * and be 16-byte aligned. The last structure must be a dummy one with the
+ * magic and size set to 0.
+ */
+struct target_aarch64_ctx {
+    uint32_t magic;
+    uint32_t size;
+};
+
+#define TARGET_FPSIMD_MAGIC 0x46508001
+
+struct target_fpsimd_context {
+    struct target_aarch64_ctx head;
+    uint32_t fpsr;
+    uint32_t fpcr;
+    uint64_t vregs[32 * 2];
+};
+
+/*
+ * Auxiliary context saved in the sigcontext.__reserved array. Not exported to
+ * user space as it will change with the addition of new context. User space
+ * should check the magic/size information.
+ */
+struct target_aux_context {
+    struct target_fpsimd_context fpsimd;
+    /* additional context to be added before "end" */
+    struct target_aarch64_ctx end;
+};
+
+struct target_rt_sigframe {
+    struct target_siginfo info;
+    struct target_ucontext uc;
+    uint64_t fp;
+    uint64_t lr;
+    uint32_t tramp[2];
+};
+
+static int target_setup_sigframe(struct target_rt_sigframe *sf,
+                                 CPUARMState *env, target_sigset_t *set)
+{
+    int i;
+    struct target_aux_context *aux =
+        (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved;
+
+    /* set up the stack frame for unwinding */
+    __put_user(env->xregs[29], &sf->fp);
+    __put_user(env->xregs[30], &sf->lr);
+
+    for (i = 0; i < 31; i++) {
+        __put_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
+    }
+    __put_user(env->xregs[31], &sf->uc.tuc_mcontext.sp);
+    __put_user(env->pc, &sf->uc.tuc_mcontext.pc);
+    __put_user(env->pstate, &sf->uc.tuc_mcontext.pstate);
+
+    __put_user(/*current->thread.fault_address*/ 0,
+            &sf->uc.tuc_mcontext.fault_address);
+
+    for (i = 0; i < TARGET_NSIG_WORDS; i++) {
+        __put_user(set->sig[i], &sf->uc.tuc_sigmask.sig[i]);
+    }
+
+    for (i = 0; i < 32 * 2; i++) {
+        __put_user(env->vfp.regs[i], &aux->fpsimd.vregs[i]);
+    }
+    __put_user(/*env->fpsr*/0, &aux->fpsimd.fpsr);
+    __put_user(/*env->fpcr*/0, &aux->fpsimd.fpcr);
+    __put_user(TARGET_FPSIMD_MAGIC, &aux->fpsimd.head.magic);
+    __put_user(sizeof(struct target_fpsimd_context),
+            &aux->fpsimd.head.size);
+
+    /* set the "end" magic */
+    __put_user(0, &aux->end.magic);
+    __put_user(0, &aux->end.size);
+
+    return 0;
+}
+
+static int target_restore_sigframe(CPUARMState *env,
+                                   struct target_rt_sigframe *sf)
+{
+    sigset_t set;
+    int i;
+    struct target_aux_context *aux =
+        (struct target_aux_context *)sf->uc.tuc_mcontext.__reserved;
+    uint32_t magic, size;
+
+    target_to_host_sigset(&set, &sf->uc.tuc_sigmask);
+    sigprocmask(SIG_SETMASK, &set, NULL);
+
+    for (i = 0; i < 31; i++) {
+        __get_user(env->xregs[i], &sf->uc.tuc_mcontext.regs[i]);
+    }
+
+    __get_user(env->xregs[31], &sf->uc.tuc_mcontext.sp);
+    __get_user(env->pc, &sf->uc.tuc_mcontext.pc);
+    __get_user(env->pstate, &sf->uc.tuc_mcontext.pstate);
+
+    __get_user(magic, &aux->fpsimd.head.magic);
+    __get_user(size, &aux->fpsimd.head.size);
+
+    if (magic != TARGET_FPSIMD_MAGIC
+        || size != sizeof(struct target_fpsimd_context)) {
+        return 1;
+    }
+
+    for (i = 0; i < 32 * 2; i++) {
+        __get_user(env->vfp.regs[i], &aux->fpsimd.vregs[i]);
+    }
+
+    return 0;
+}
+
+static abi_ulong get_sigframe(struct target_sigaction *ka, CPUARMState *env)
+{
+    abi_ulong sp;
+
+    sp = env->xregs[31];
+
+    /*
+     * This is the X/Open sanctioned signal stack switching.
+     */
+    if ((ka->sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) {
+        sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+    }
+
+    sp = (sp - sizeof(struct target_rt_sigframe)) & ~15;
+
+    return sp;
+}
+
+static void target_setup_frame(int usig, struct target_sigaction *ka,
+                               target_siginfo_t *info, target_sigset_t *set,
+                               CPUARMState *env)
+{
+    struct target_rt_sigframe *frame;
+    abi_ulong frame_addr;
+
+    frame_addr = get_sigframe(ka, env);
+    if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+        goto give_sigsegv;
+    }
+
+    __put_user(0, &frame->uc.tuc_flags);
+    __put_user(0, &frame->uc.tuc_link);
+
+    __put_user(target_sigaltstack_used.ss_sp,
+                      &frame->uc.tuc_stack.ss_sp);
+    __put_user(sas_ss_flags(env->xregs[31]),
+                      &frame->uc.tuc_stack.ss_flags);
+    __put_user(target_sigaltstack_used.ss_size,
+                      &frame->uc.tuc_stack.ss_size);
+    target_setup_sigframe(frame, env, set);
+    /* mov x8,#__NR_rt_sigreturn; svc #0 */
+    __put_user(0xd2801168, &frame->tramp[0]);
+    __put_user(0xd4000001, &frame->tramp[1]);
+    env->xregs[0] = usig;
+    env->xregs[31] = frame_addr;
+    env->xregs[29] = env->xregs[31] + offsetof(struct target_rt_sigframe, fp);
+    env->pc = ka->_sa_handler;
+    env->xregs[30] = env->xregs[31] + offsetof(struct target_rt_sigframe, tramp);
+    if (info) {
+        if (copy_siginfo_to_user(&frame->info, info)) {
+		goto give_sigsegv;
+	}
+        env->xregs[1] = frame_addr + offsetof(struct target_rt_sigframe, info);
+        env->xregs[2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
+    }
+
+    unlock_user_struct(frame, frame_addr, 1);
+    return;
+
+ give_sigsegv:
+    unlock_user_struct(frame, frame_addr, 1);
+    force_sig(TARGET_SIGSEGV);
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+                           target_siginfo_t *info, target_sigset_t *set,
+                           CPUARMState *env)
+{
+    target_setup_frame(sig, ka, info, set, env);
+}
+
+static void setup_frame(int sig, struct target_sigaction *ka,
+                        target_sigset_t *set, CPUARMState *env)
+{
+    target_setup_frame(sig, ka, 0, set, env);
+}
+
+long do_rt_sigreturn(CPUARMState *env)
+{
+    struct target_rt_sigframe *frame;
+    abi_ulong frame_addr = env->xregs[31];
+
+    if (frame_addr & 15) {
+        goto badframe;
+    }
+
+    if  (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+        goto badframe;
+    }
+
+    if (target_restore_sigframe(env, frame)) {
+        goto badframe;
+    }
+
+    if (do_sigaltstack(frame_addr +
+            offsetof(struct target_rt_sigframe, uc.tuc_stack),
+            0, get_sp_from_cpustate(env)) == -EFAULT) {
+        goto badframe;
+    }
+
+    unlock_user_struct(frame, frame_addr, 0);
+    return env->xregs[0];
+
+ badframe:
+    unlock_user_struct(frame, frame_addr, 0);
+    force_sig(TARGET_SIGSEGV);
+    return 0;
+}
+
+long do_sigreturn(CPUARMState *env)
+{
+    return do_rt_sigreturn(env);
+}
+
 #elif defined(TARGET_ARM)
 
 struct target_sigcontext {
-- 
1.8.2.2

Re: [Qemu-devel] [PATCH v4 09/12] linux-user: Add signal handling for AArch64

[Richard Henderson]

On 05/13/2013 09:32 PM, John Rigby wrote:
> +#ifdef TARGET_AARCH64
> +   return state->sp;
> +#else
>     return state->regs[13];
> +#endif

Merge error.  You changed that to xreg[31].


r~

Re: [Qemu-devel] [PATCH v4 09/12] linux-user: Add signal handling for AArch64

[John Rigby]

On Tue, May 14, 2013 at 10:31 AM, Richard Henderson <rth@twiddle.net> wrote:
> On 05/13/2013 09:32 PM, John Rigby wrote:
>> +#ifdef TARGET_AARCH64
>> +   return state->sp;
>> +#else
>>     return state->regs[13];
>> +#endif
>
> Merge error.  You changed that to xreg[31].
Thanks, fixed locally for v5.

[Qemu-devel] [PATCH v4 10/12] linux-user: Add AArch64 support

[John Rigby]

From: Alexander Graf <agraf@suse.de>

This patch adds support for AArch64 in all the small corners of
linux-user and beyond.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---

changes in v3:
- Aarch64 files go in linux-user/aarch64 instead of ifdefs
  in linux-user/arm
    
changes in v4:
- fix more sp --> xregs[31] issues

 default-configs/aarch64-linux-user.mak |   3 +
 linux-user/aarch64/syscall.h           |  37 ++++++
 linux-user/aarch64/target_signal.h     |  33 +++++
 linux-user/aarch64/termbits.h          | 216 +++++++++++++++++++++++++++++++++
 linux-user/elfload.c                   |  15 ++-
 linux-user/main.c                      |   9 ++
 target-arm/cpu.h                       |  20 ++-
 7 files changed, 327 insertions(+), 6 deletions(-)
 create mode 100644 default-configs/aarch64-linux-user.mak
 create mode 100644 linux-user/aarch64/syscall.h
 create mode 100644 linux-user/aarch64/target_signal.h
 create mode 100644 linux-user/aarch64/termbits.h

diff --git a/default-configs/aarch64-linux-user.mak b/default-configs/aarch64-linux-user.mak
new file mode 100644
index 0000000..46d4aa2
--- /dev/null
+++ b/default-configs/aarch64-linux-user.mak
@@ -0,0 +1,3 @@
+# Default configuration for arm-linux-user
+
+CONFIG_GDBSTUB_XML=y
diff --git a/linux-user/aarch64/syscall.h b/linux-user/aarch64/syscall.h
new file mode 100644
index 0000000..f8d12f1
--- /dev/null
+++ b/linux-user/aarch64/syscall.h
@@ -0,0 +1,37 @@
+struct target_pt_regs {
+    uint64_t        regs[31];
+    uint64_t        sp;
+    uint64_t        pc;
+    uint64_t        pstate;
+};
+
+#define ARM_cpsr	uregs[16]
+#define ARM_pc		uregs[15]
+#define ARM_lr		uregs[14]
+#define ARM_sp		uregs[13]
+#define ARM_ip		uregs[12]
+#define ARM_fp		uregs[11]
+#define ARM_r10		uregs[10]
+#define ARM_r9		uregs[9]
+#define ARM_r8		uregs[8]
+#define ARM_r7		uregs[7]
+#define ARM_r6		uregs[6]
+#define ARM_r5		uregs[5]
+#define ARM_r4		uregs[4]
+#define ARM_r3		uregs[3]
+#define ARM_r2		uregs[2]
+#define ARM_r1		uregs[1]
+#define ARM_r0		uregs[0]
+#define ARM_ORIG_r0	uregs[17]
+
+#define UNAME_MACHINE "aarch64"
+
+#define ARM_SYSCALL_BASE	0x900000
+#define ARM_THUMB_SYSCALL	0
+
+#define ARM_NR_BASE	  0xf0000
+#define ARM_NR_cacheflush (ARM_NR_BASE + 2)
+#define ARM_NR_set_tls	  (ARM_NR_BASE + 5)
+
+#define ARM_NR_semihosting	  0x123456
+#define ARM_NR_thumb_semihosting  0xAB
diff --git a/linux-user/aarch64/target_signal.h b/linux-user/aarch64/target_signal.h
new file mode 100644
index 0000000..d413dfc
--- /dev/null
+++ b/linux-user/aarch64/target_signal.h
@@ -0,0 +1,33 @@
+#ifndef TARGET_SIGNAL_H
+#define TARGET_SIGNAL_H
+
+#include "cpu.h"
+
+/* this struct defines a stack used during syscall handling */
+
+typedef struct target_sigaltstack {
+	abi_ulong ss_sp;
+	abi_long ss_flags;
+	abi_ulong ss_size;
+} target_stack_t;
+
+
+/*
+ * sigaltstack controls
+ */
+#define TARGET_SS_ONSTACK	1
+#define TARGET_SS_DISABLE	2
+
+#define TARGET_MINSIGSTKSZ	2048
+#define TARGET_SIGSTKSZ		8192
+
+static inline abi_ulong get_sp_from_cpustate(CPUARMState *state)
+{
+#ifdef TARGET_AARCH64
+   return state->xregs[31];
+#else
+   return state->regs[13];
+#endif
+}
+
+#endif /* TARGET_SIGNAL_H */
diff --git a/linux-user/aarch64/termbits.h b/linux-user/aarch64/termbits.h
new file mode 100644
index 0000000..7772df1
--- /dev/null
+++ b/linux-user/aarch64/termbits.h
@@ -0,0 +1,216 @@
+/* from asm/termbits.h */
+/* NOTE: exactly the same as i386 */
+
+#define TARGET_NCCS 19
+
+struct target_termios {
+    unsigned int c_iflag;               /* input mode flags */
+    unsigned int c_oflag;               /* output mode flags */
+    unsigned int c_cflag;               /* control mode flags */
+    unsigned int c_lflag;               /* local mode flags */
+    unsigned char c_line;                    /* line discipline */
+    unsigned char c_cc[TARGET_NCCS];                /* control characters */
+};
+
+/* c_iflag bits */
+#define TARGET_IGNBRK  0000001
+#define TARGET_BRKINT  0000002
+#define TARGET_IGNPAR  0000004
+#define TARGET_PARMRK  0000010
+#define TARGET_INPCK   0000020
+#define TARGET_ISTRIP  0000040
+#define TARGET_INLCR   0000100
+#define TARGET_IGNCR   0000200
+#define TARGET_ICRNL   0000400
+#define TARGET_IUCLC   0001000
+#define TARGET_IXON    0002000
+#define TARGET_IXANY   0004000
+#define TARGET_IXOFF   0010000
+#define TARGET_IMAXBEL 0020000
+#define TARGET_IUTF8   0040000
+
+/* c_oflag bits */
+#define TARGET_OPOST   0000001
+#define TARGET_OLCUC   0000002
+#define TARGET_ONLCR   0000004
+#define TARGET_OCRNL   0000010
+#define TARGET_ONOCR   0000020
+#define TARGET_ONLRET  0000040
+#define TARGET_OFILL   0000100
+#define TARGET_OFDEL   0000200
+#define TARGET_NLDLY   0000400
+#define   TARGET_NL0   0000000
+#define   TARGET_NL1   0000400
+#define TARGET_CRDLY   0003000
+#define   TARGET_CR0   0000000
+#define   TARGET_CR1   0001000
+#define   TARGET_CR2   0002000
+#define   TARGET_CR3   0003000
+#define TARGET_TABDLY  0014000
+#define   TARGET_TAB0  0000000
+#define   TARGET_TAB1  0004000
+#define   TARGET_TAB2  0010000
+#define   TARGET_TAB3  0014000
+#define   TARGET_XTABS 0014000
+#define TARGET_BSDLY   0020000
+#define   TARGET_BS0   0000000
+#define   TARGET_BS1   0020000
+#define TARGET_VTDLY   0040000
+#define   TARGET_VT0   0000000
+#define   TARGET_VT1   0040000
+#define TARGET_FFDLY   0100000
+#define   TARGET_FF0   0000000
+#define   TARGET_FF1   0100000
+
+/* c_cflag bit meaning */
+#define TARGET_CBAUD   0010017
+#define  TARGET_B0     0000000         /* hang up */
+#define  TARGET_B50    0000001
+#define  TARGET_B75    0000002
+#define  TARGET_B110   0000003
+#define  TARGET_B134   0000004
+#define  TARGET_B150   0000005
+#define  TARGET_B200   0000006
+#define  TARGET_B300   0000007
+#define  TARGET_B600   0000010
+#define  TARGET_B1200  0000011
+#define  TARGET_B1800  0000012
+#define  TARGET_B2400  0000013
+#define  TARGET_B4800  0000014
+#define  TARGET_B9600  0000015
+#define  TARGET_B19200 0000016
+#define  TARGET_B38400 0000017
+#define TARGET_EXTA B19200
+#define TARGET_EXTB B38400
+#define TARGET_CSIZE   0000060
+#define   TARGET_CS5   0000000
+#define   TARGET_CS6   0000020
+#define   TARGET_CS7   0000040
+#define   TARGET_CS8   0000060
+#define TARGET_CSTOPB  0000100
+#define TARGET_CREAD   0000200
+#define TARGET_PARENB  0000400
+#define TARGET_PARODD  0001000
+#define TARGET_HUPCL   0002000
+#define TARGET_CLOCAL  0004000
+#define TARGET_CBAUDEX 0010000
+#define  TARGET_B57600  0010001
+#define  TARGET_B115200 0010002
+#define  TARGET_B230400 0010003
+#define  TARGET_B460800 0010004
+#define TARGET_CIBAUD    002003600000  /* input baud rate (not used) */
+#define TARGET_CMSPAR    010000000000  /* mark or space (stick) parity */
+#define TARGET_CRTSCTS   020000000000  /* flow control */
+
+/* c_lflag bits */
+#define TARGET_ISIG    0000001
+#define TARGET_ICANON  0000002
+#define TARGET_XCASE   0000004
+#define TARGET_ECHO    0000010
+#define TARGET_ECHOE   0000020
+#define TARGET_ECHOK   0000040
+#define TARGET_ECHONL  0000100
+#define TARGET_NOFLSH  0000200
+#define TARGET_TOSTOP  0000400
+#define TARGET_ECHOCTL 0001000
+#define TARGET_ECHOPRT 0002000
+#define TARGET_ECHOKE  0004000
+#define TARGET_FLUSHO  0010000
+#define TARGET_PENDIN  0040000
+#define TARGET_IEXTEN  0100000
+
+/* c_cc character offsets */
+#define TARGET_VINTR	0
+#define TARGET_VQUIT	1
+#define TARGET_VERASE	2
+#define TARGET_VKILL	3
+#define TARGET_VEOF	4
+#define TARGET_VTIME	5
+#define TARGET_VMIN	6
+#define TARGET_VSWTC	7
+#define TARGET_VSTART	8
+#define TARGET_VSTOP	9
+#define TARGET_VSUSP	10
+#define TARGET_VEOL	11
+#define TARGET_VREPRINT	12
+#define TARGET_VDISCARD	13
+#define TARGET_VWERASE	14
+#define TARGET_VLNEXT	15
+#define TARGET_VEOL2	16
+
+/* ioctls */
+
+#define TARGET_TCGETS		0x5401
+#define TARGET_TCSETS		0x5402
+#define TARGET_TCSETSW		0x5403
+#define TARGET_TCSETSF		0x5404
+#define TARGET_TCGETA		0x5405
+#define TARGET_TCSETA		0x5406
+#define TARGET_TCSETAW		0x5407
+#define TARGET_TCSETAF		0x5408
+#define TARGET_TCSBRK		0x5409
+#define TARGET_TCXONC		0x540A
+#define TARGET_TCFLSH		0x540B
+
+#define TARGET_TIOCEXCL	0x540C
+#define TARGET_TIOCNXCL	0x540D
+#define TARGET_TIOCSCTTY	0x540E
+#define TARGET_TIOCGPGRP	0x540F
+#define TARGET_TIOCSPGRP	0x5410
+#define TARGET_TIOCOUTQ	0x5411
+#define TARGET_TIOCSTI		0x5412
+#define TARGET_TIOCGWINSZ	0x5413
+#define TARGET_TIOCSWINSZ	0x5414
+#define TARGET_TIOCMGET	0x5415
+#define TARGET_TIOCMBIS	0x5416
+#define TARGET_TIOCMBIC	0x5417
+#define TARGET_TIOCMSET	0x5418
+#define TARGET_TIOCGSOFTCAR	0x5419
+#define TARGET_TIOCSSOFTCAR	0x541A
+#define TARGET_FIONREAD	0x541B
+#define TARGET_TIOCINQ		TARGET_FIONREAD
+#define TARGET_TIOCLINUX	0x541C
+#define TARGET_TIOCCONS	0x541D
+#define TARGET_TIOCGSERIAL	0x541E
+#define TARGET_TIOCSSERIAL	0x541F
+#define TARGET_TIOCPKT		0x5420
+#define TARGET_FIONBIO		0x5421
+#define TARGET_TIOCNOTTY	0x5422
+#define TARGET_TIOCSETD	0x5423
+#define TARGET_TIOCGETD	0x5424
+#define TARGET_TCSBRKP		0x5425	/* Needed for POSIX tcsendbreak() */
+#define TARGET_TIOCTTYGSTRUCT	0x5426  /* For debugging only */
+#define TARGET_TIOCSBRK	0x5427  /* BSD compatibility */
+#define TARGET_TIOCCBRK	0x5428  /* BSD compatibility */
+#define TARGET_TIOCGSID	0x5429  /* Return the session ID of FD */
+#define TARGET_TIOCGPTN	TARGET_IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */
+#define TARGET_TIOCSPTLCK	TARGET_IOW('T',0x31, int)  /* Lock/unlock Pty */
+
+#define TARGET_FIONCLEX	0x5450  /* these numbers need to be adjusted. */
+#define TARGET_FIOCLEX		0x5451
+#define TARGET_FIOASYNC	0x5452
+#define TARGET_TIOCSERCONFIG	0x5453
+#define TARGET_TIOCSERGWILD	0x5454
+#define TARGET_TIOCSERSWILD	0x5455
+#define TARGET_TIOCGLCKTRMIOS	0x5456
+#define TARGET_TIOCSLCKTRMIOS	0x5457
+#define TARGET_TIOCSERGSTRUCT	0x5458 /* For debugging only */
+#define TARGET_TIOCSERGETLSR   0x5459 /* Get line status register */
+#define TARGET_TIOCSERGETMULTI 0x545A /* Get multiport config  */
+#define TARGET_TIOCSERSETMULTI 0x545B /* Set multiport config */
+
+#define TARGET_TIOCMIWAIT	0x545C	/* wait for a change on serial input line(s) */
+#define TARGET_TIOCGICOUNT	0x545D	/* read serial port inline interrupt counts */
+#define TARGET_TIOCGHAYESESP   0x545E  /* Get Hayes ESP configuration */
+#define TARGET_TIOCSHAYESESP   0x545F  /* Set Hayes ESP configuration */
+
+/* Used for packet mode */
+#define TARGET_TIOCPKT_DATA		 0
+#define TARGET_TIOCPKT_FLUSHREAD	 1
+#define TARGET_TIOCPKT_FLUSHWRITE	 2
+#define TARGET_TIOCPKT_STOP		 4
+#define TARGET_TIOCPKT_START		 8
+#define TARGET_TIOCPKT_NOSTOP		16
+#define TARGET_TIOCPKT_DOSTOP		32
+
+#define TARGET_TIOCSER_TEMT    0x01	/* Transmitter physically empty */
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index ddef23e..ac05d61 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -267,16 +267,26 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *en
 
 #define ELF_START_MMAP 0x80000000
 
-#define elf_check_arch(x) ( (x) == EM_ARM )
+#define elf_check_arch(x) ( (x) == ELF_MACHINE )
 
+#define ELF_ARCH        ELF_MACHINE
+
+#ifdef TARGET_AARCH64
+#define ELF_CLASS       ELFCLASS64
+#else
 #define ELF_CLASS       ELFCLASS32
-#define ELF_ARCH        EM_ARM
+#endif
 
 static inline void init_thread(struct target_pt_regs *regs,
                                struct image_info *infop)
 {
     abi_long stack = infop->start_stack;
     memset(regs, 0, sizeof(*regs));
+
+#ifdef TARGET_AARCH64
+    regs->pc = infop->entry & ~0x3ULL;
+    regs->sp = stack;
+#else
     regs->ARM_cpsr = 0x10;
     if (infop->entry & 1)
         regs->ARM_cpsr |= CPSR_T;
@@ -290,6 +300,7 @@ static inline void init_thread(struct target_pt_regs *regs,
     /* For uClinux PIC binaries.  */
     /* XXX: Linux does this only on ARM with no MMU (do we care ?) */
     regs->ARM_r10 = infop->start_data;
+#endif
 }
 
 #define ELF_NREG    18
diff --git a/linux-user/main.c b/linux-user/main.c
index 20fac12..539d45b 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3890,6 +3890,15 @@ int main(int argc, char **argv, char **envp)
     cpu_x86_load_seg(env, R_FS, 0);
     cpu_x86_load_seg(env, R_GS, 0);
 #endif
+#elif defined(TARGET_AARCH64)
+    {
+        int i;
+        for(i = 0; i < 31; i++) {
+            env->xregs[i] = regs->regs[i];
+        }
+        env->pc = regs->pc;
+        env->xregs[31] = regs->sp;
+    }
 #elif defined(TARGET_ARM)
     {
         int i;
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index c486eb5..cd42814 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -290,7 +290,11 @@ int cpu_arm_handle_mmu_fault (CPUARMState *env, target_ulong address, int rw,
 
 static inline void cpu_set_tls(CPUARMState *env, target_ulong newtls)
 {
-  env->cp15.c13_tls2 = newtls;
+    if (is_a64(env)) {
+        env->sr.tpidr_el0 = newtls;
+    } else {
+        env->cp15.c13_tls2 = newtls;
+    }
 }
 
 #define CPSR_M (0x1f)
@@ -696,9 +700,17 @@ static inline int cpu_mmu_index (CPUARMState *env)
 #if defined(CONFIG_USER_ONLY)
 static inline void cpu_clone_regs(CPUARMState *env, target_ulong newsp)
 {
-    if (newsp)
-        env->regs[13] = newsp;
-    env->regs[0] = 0;
+    if (is_a64(env)) {
+        if (newsp) {
+            env->xregs[31] = newsp;
+        }
+        env->xregs[0] = 0;
+    } else {
+        if (newsp) {
+            env->regs[13] = newsp;
+        }
+        env->regs[0] = 0;
+    }
 }
 #endif
 
-- 
1.8.2.2

[Qemu-devel] [PATCH v4 11/12] ARM: Add aarch64 target to configure

[John Rigby]

From: Alexander Graf <agraf@suse.de>

If we want to compile a target machine type that is AArch64 capable,
we need to add a new 64-bit capable ARM target. Use AArch64 since that
is the official ARM LTD name.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---

Changes in v3:
- Arch aarch64 gets its own TARGET_ABI_DIR

 configure                | 8 ++++++++
 linux-user/Makefile.objs | 1 +
 2 files changed, 9 insertions(+)

diff --git a/configure b/configure
index cab6332..6113cfe 100755
--- a/configure
+++ b/configure
@@ -4200,6 +4200,14 @@ case "$target_arch2" in
     target_nptl="yes"
     gdb_xml_files="arm-core.xml arm-vfp.xml arm-vfp3.xml arm-neon.xml"
   ;;
+  aarch64)
+    TARGET_BASE_ARCH=arm
+    TARGET_ABI_DIR=aarch64
+    bflt="yes"
+    target_nptl="yes"
+    gdb_xml_files="aarch64-core.xml aarch64-fpu.xml"
+    target_long_alignment=8
+  ;;
   cris)
     target_nptl="yes"
   ;;
diff --git a/linux-user/Makefile.objs b/linux-user/Makefile.objs
index 5899d72..c8709d6 100644
--- a/linux-user/Makefile.objs
+++ b/linux-user/Makefile.objs
@@ -4,4 +4,5 @@ obj-y = main.o syscall.o strace.o mmap.o signal.o \
 obj-$(TARGET_HAS_BFLT) += flatload.o
 obj-$(TARGET_I386) += vm86.o
 obj-$(TARGET_ARM) += arm/nwfpe/
+obj-$(TARGET_AARCH64) += arm/nwfpe/
 obj-$(TARGET_M68K) += m68k-sim.o
-- 
1.8.2.2

[Qemu-devel] [PATCH v4 12/12] linux-user: AArch64 requires at least 3.8.0

[John Rigby]

From: Alexander Graf <agraf@suse.de>

Glibc 1.17 checks for the host kernel version on startup. Unfortunately,
it also checks whether the host kernel version is recent enough for the
target to run at all.

Since AArch64 support only got introduced in 3.8.0, that means that glibc
refuses to run on any older kernel version than that.

To allow for execution of linux-user guests even on older host kernels,
let's always fake the kernel version to 3.8.0 on AArch64 guests.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
---

Changes in v4:
- Go back to original way of doing this as I lack the config-fu
  to do it via changes in configure

 linux-user/syscall.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 3345508..171424e 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -316,7 +316,12 @@ static int sys_uname(struct new_utsname *buf)
   memset(buf, 0, sizeof(*buf));
   COPY_UTSNAME_FIELD(buf->sysname, uts_buf.sysname);
   COPY_UTSNAME_FIELD(buf->nodename, uts_buf.nodename);
+#ifdef TARGET_AARCH64
+  /* glibc refuses to run on older kernels */
+  COPY_UTSNAME_FIELD(buf->release, "3.8.0");
+#else
   COPY_UTSNAME_FIELD(buf->release, uts_buf.release);
+#endif
   COPY_UTSNAME_FIELD(buf->version, uts_buf.version);
   COPY_UTSNAME_FIELD(buf->machine, uts_buf.machine);
 #ifdef _GNU_SOURCE
-- 
1.8.2.2