[Qemu-devel] [PATCH 16/34] target/ppc: move FP and VMX registers into aligned vsr register array

[Richard Henderson <richard.henderson@linaro.org>]

From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

The VSX register array is a block of 64 128-bit registers where the first 32
registers consist of the existing 64-bit FP registers extended to 128-bit
using new VSR registers, and the last 32 registers are the VMX 128-bit
registers as show below:

            64-bit               64-bit
    +--------------------+--------------------+
    |        FP0         |                    |  VSR0
    +--------------------+--------------------+
    |        FP1         |                    |  VSR1
    +--------------------+--------------------+
    |        ...         |        ...         |  ...
    +--------------------+--------------------+
    |        FP30        |                    |  VSR30
    +--------------------+--------------------+
    |        FP31        |                    |  VSR31
    +--------------------+--------------------+
    |                  VMX0                   |  VSR32
    +-----------------------------------------+
    |                  VMX1                   |  VSR33
    +-----------------------------------------+
    |                  ...                    |  ...
    +-----------------------------------------+
    |                  VMX30                  |  VSR62
    +-----------------------------------------+
    |                  VMX31                  |  VSR63
    +-----------------------------------------+

In order to allow for future conversion of VSX instructions to use TCG vector
operations, recreate the same layout using an aligned version of the existing
vsr register array.

Since the old fpr and avr register arrays are removed, the existing callers
must also be updated to use the correct offset in the vsr register array. This
also includes switching the relevant VMState fields over to using subarrays
to make sure that migration is preserved.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20181217122405.18732-8-mark.cave-ayland@ilande.co.uk>
---
 target/ppc/cpu.h                    |  9 ++--
 target/ppc/internal.h               | 18 ++------
 linux-user/ppc/signal.c             | 24 +++++-----
 target/ppc/arch_dump.c              | 12 ++---
 target/ppc/gdbstub.c                |  8 ++--
 target/ppc/machine.c                | 72 +++++++++++++++++++++++++++--
 target/ppc/monitor.c                |  4 +-
 target/ppc/translate.c              | 14 +++---
 target/ppc/translate/dfp-impl.inc.c |  2 +-
 target/ppc/translate/vmx-impl.inc.c |  7 ++-
 target/ppc/translate/vsx-impl.inc.c |  4 +-
 target/ppc/translate_init.inc.c     | 24 +++++-----
 12 files changed, 126 insertions(+), 72 deletions(-)

diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
index 5445d4c3c1..c8f449081d 100644
--- a/target/ppc/cpu.h
+++ b/target/ppc/cpu.h
@@ -1016,8 +1016,6 @@ struct CPUPPCState {
 
     /* Floating point execution context */
     float_status fp_status;
-    /* floating point registers */
-    float64 fpr[32];
     /* floating point status and control register */
     target_ulong fpscr;
 
@@ -1067,11 +1065,10 @@ struct CPUPPCState {
     /* Special purpose registers */
     target_ulong spr[1024];
     ppc_spr_t spr_cb[1024];
-    /* Altivec registers */
-    ppc_avr_t avr[32];
+    /* Vector status and control register */
     uint32_t vscr;
-    /* VSX registers */
-    uint64_t vsr[32];
+    /* VSX registers (including FP and AVR) */
+    ppc_vsr_t vsr[64] QEMU_ALIGNED(16);
     /* SPE registers */
     uint64_t spe_acc;
     uint32_t spe_fscr;
diff --git a/target/ppc/internal.h b/target/ppc/internal.h
index b4b1f7b3db..b77d564a65 100644
--- a/target/ppc/internal.h
+++ b/target/ppc/internal.h
@@ -218,24 +218,14 @@ EXTRACT_HELPER_SPLIT_3(DCMX_XV, 5, 16, 0, 1, 2, 5, 1, 6, 6);
 
 static inline void getVSR(int n, ppc_vsr_t *vsr, CPUPPCState *env)
 {
-    if (n < 32) {
-        vsr->VsrD(0) = env->fpr[n];
-        vsr->VsrD(1) = env->vsr[n];
-    } else {
-        vsr->u64[0] = env->avr[n - 32].u64[0];
-        vsr->u64[1] = env->avr[n - 32].u64[1];
-    }
+    vsr->VsrD(0) = env->vsr[n].u64[0];
+    vsr->VsrD(1) = env->vsr[n].u64[1];
 }
 
 static inline void putVSR(int n, ppc_vsr_t *vsr, CPUPPCState *env)
 {
-    if (n < 32) {
-        env->fpr[n] = vsr->VsrD(0);
-        env->vsr[n] = vsr->VsrD(1);
-    } else {
-        env->avr[n - 32].u64[0] = vsr->u64[0];
-        env->avr[n - 32].u64[1] = vsr->u64[1];
-    }
+    env->vsr[n].u64[0] = vsr->VsrD(0);
+    env->vsr[n].u64[1] = vsr->VsrD(1);
 }
 
 void helper_compute_fprf_float16(CPUPPCState *env, float16 arg);
diff --git a/linux-user/ppc/signal.c b/linux-user/ppc/signal.c
index 2ae120a2bc..a053dd5b84 100644
--- a/linux-user/ppc/signal.c
+++ b/linux-user/ppc/signal.c
@@ -258,8 +258,8 @@ static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame)
     /* Save Altivec registers if necessary.  */
     if (env->insns_flags & PPC_ALTIVEC) {
         uint32_t *vrsave;
-        for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
-            ppc_avr_t *avr = &env->avr[i];
+        for (i = 0; i < 32; i++) {
+            ppc_avr_t *avr = &env->vsr[32 + i];
             ppc_avr_t *vreg = (ppc_avr_t *)&frame->mc_vregs.altivec[i];
 
             __put_user(avr->u64[PPC_VEC_HI], &vreg->u64[0]);
@@ -281,15 +281,15 @@ static void save_user_regs(CPUPPCState *env, struct target_mcontext *frame)
     /* Save VSX second halves */
     if (env->insns_flags2 & PPC2_VSX) {
         uint64_t *vsregs = (uint64_t *)&frame->mc_vregs.altivec[34];
-        for (i = 0; i < ARRAY_SIZE(env->vsr); i++) {
-            __put_user(env->vsr[i], &vsregs[i]);
+        for (i = 0; i < 32; i++) {
+            __put_user(env->vsr[i].u64[1], &vsregs[i]);
         }
     }
 
     /* Save floating point registers.  */
     if (env->insns_flags & PPC_FLOAT) {
-        for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
-            __put_user(env->fpr[i], &frame->mc_fregs[i]);
+        for (i = 0; i < 32; i++) {
+            __put_user(env->vsr[i].u64[0], &frame->mc_fregs[i]);
         }
         __put_user((uint64_t) env->fpscr, &frame->mc_fregs[32]);
     }
@@ -373,8 +373,8 @@ static void restore_user_regs(CPUPPCState *env,
 #else
         v_regs = (ppc_avr_t *)frame->mc_vregs.altivec;
 #endif
-        for (i = 0; i < ARRAY_SIZE(env->avr); i++) {
-            ppc_avr_t *avr = &env->avr[i];
+        for (i = 0; i < 32; i++) {
+            ppc_avr_t *avr = &env->vsr[32 + i];
             ppc_avr_t *vreg = &v_regs[i];
 
             __get_user(avr->u64[PPC_VEC_HI], &vreg->u64[0]);
@@ -393,16 +393,16 @@ static void restore_user_regs(CPUPPCState *env,
     /* Restore VSX second halves */
     if (env->insns_flags2 & PPC2_VSX) {
         uint64_t *vsregs = (uint64_t *)&frame->mc_vregs.altivec[34];
-        for (i = 0; i < ARRAY_SIZE(env->vsr); i++) {
-            __get_user(env->vsr[i], &vsregs[i]);
+        for (i = 0; i < 32; i++) {
+            __get_user(env->vsr[i].u64[1], &vsregs[i]);
         }
     }
 
     /* Restore floating point registers.  */
     if (env->insns_flags & PPC_FLOAT) {
         uint64_t fpscr;
-        for (i = 0; i < ARRAY_SIZE(env->fpr); i++) {
-            __get_user(env->fpr[i], &frame->mc_fregs[i]);
+        for (i = 0; i < 32; i++) {
+            __get_user(env->vsr[i].u64[0], &frame->mc_fregs[i]);
         }
         __get_user(fpscr, &frame->mc_fregs[32]);
         env->fpscr = (uint32_t) fpscr;
diff --git a/target/ppc/arch_dump.c b/target/ppc/arch_dump.c
index cc1460e4e3..c272d0d3d4 100644
--- a/target/ppc/arch_dump.c
+++ b/target/ppc/arch_dump.c
@@ -140,7 +140,7 @@ static void ppc_write_elf_fpregset(NoteFuncArg *arg, PowerPCCPU *cpu)
     memset(fpregset, 0, sizeof(*fpregset));
 
     for (i = 0; i < 32; i++) {
-        fpregset->fpr[i] = cpu_to_dump64(s, cpu->env.fpr[i]);
+        fpregset->fpr[i] = cpu_to_dump64(s, cpu->env.vsr[i].u64[0]);
     }
     fpregset->fpscr = cpu_to_dump_reg(s, cpu->env.fpscr);
 }
@@ -166,11 +166,11 @@ static void ppc_write_elf_vmxregset(NoteFuncArg *arg, PowerPCCPU *cpu)
 #endif
 
         if (needs_byteswap) {
-            vmxregset->avr[i].u64[0] = bswap64(cpu->env.avr[i].u64[1]);
-            vmxregset->avr[i].u64[1] = bswap64(cpu->env.avr[i].u64[0]);
+            vmxregset->avr[i].u64[0] = bswap64(cpu->env.vsr[32 + i].u64[1]);
+            vmxregset->avr[i].u64[1] = bswap64(cpu->env.vsr[32 + i].u64[0]);
         } else {
-            vmxregset->avr[i].u64[0] = cpu->env.avr[i].u64[0];
-            vmxregset->avr[i].u64[1] = cpu->env.avr[i].u64[1];
+            vmxregset->avr[i].u64[0] = cpu->env.vsr[32 + i].u64[0];
+            vmxregset->avr[i].u64[1] = cpu->env.vsr[32 + i].u64[1];
         }
     }
     vmxregset->vscr.u32[3] = cpu_to_dump32(s, cpu->env.vscr);
@@ -188,7 +188,7 @@ static void ppc_write_elf_vsxregset(NoteFuncArg *arg, PowerPCCPU *cpu)
     memset(vsxregset, 0, sizeof(*vsxregset));
 
     for (i = 0; i < 32; i++) {
-        vsxregset->vsr[i] = cpu_to_dump64(s, cpu->env.vsr[i]);
+        vsxregset->vsr[i] = cpu_to_dump64(s, cpu->env.vsr[i].u64[1]);
     }
 }
 
diff --git a/target/ppc/gdbstub.c b/target/ppc/gdbstub.c
index b6f6693583..8c9dc284c4 100644
--- a/target/ppc/gdbstub.c
+++ b/target/ppc/gdbstub.c
@@ -126,7 +126,7 @@ int ppc_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
         gdb_get_regl(mem_buf, env->gpr[n]);
     } else if (n < 64) {
         /* fprs */
-        stfq_p(mem_buf, env->fpr[n-32]);
+        stfq_p(mem_buf, env->vsr[n - 32].u64[0]);
     } else {
         switch (n) {
         case 64:
@@ -178,7 +178,7 @@ int ppc_cpu_gdb_read_register_apple(CPUState *cs, uint8_t *mem_buf, int n)
         gdb_get_reg64(mem_buf, env->gpr[n]);
     } else if (n < 64) {
         /* fprs */
-        stfq_p(mem_buf, env->fpr[n-32]);
+        stfq_p(mem_buf, env->vsr[n - 32].u64[0]);
     } else if (n < 96) {
         /* Altivec */
         stq_p(mem_buf, n - 64);
@@ -234,7 +234,7 @@ int ppc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
         env->gpr[n] = ldtul_p(mem_buf);
     } else if (n < 64) {
         /* fprs */
-        env->fpr[n-32] = ldfq_p(mem_buf);
+        env->vsr[n - 32].u64[0] = ldfq_p(mem_buf);
     } else {
         switch (n) {
         case 64:
@@ -284,7 +284,7 @@ int ppc_cpu_gdb_write_register_apple(CPUState *cs, uint8_t *mem_buf, int n)
         env->gpr[n] = ldq_p(mem_buf);
     } else if (n < 64) {
         /* fprs */
-        env->fpr[n-32] = ldfq_p(mem_buf);
+        env->vsr[n - 32].u64[0] = ldfq_p(mem_buf);
     } else {
         switch (n) {
         case 64 + 32:
diff --git a/target/ppc/machine.c b/target/ppc/machine.c
index e7b3725273..451cf376b4 100644
--- a/target/ppc/machine.c
+++ b/target/ppc/machine.c
@@ -45,7 +45,7 @@ static int cpu_load_old(QEMUFile *f, void *opaque, int version_id)
             uint64_t l;
         } u;
         u.l = qemu_get_be64(f);
-        env->fpr[i] = u.d;
+        env->vsr[i].u64[0] = u.d;
     }
     qemu_get_be32s(f, &fpscr);
     env->fpscr = fpscr;
@@ -138,11 +138,73 @@ static const VMStateInfo vmstate_info_avr = {
 };
 
 #define VMSTATE_AVR_ARRAY_V(_f, _s, _n, _v)                       \
-    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_avr, ppc_avr_t)
+    VMSTATE_SUB_ARRAY(_f, _s, 32, _n, _v, vmstate_info_avr, ppc_avr_t)
 
 #define VMSTATE_AVR_ARRAY(_f, _s, _n)                             \
     VMSTATE_AVR_ARRAY_V(_f, _s, _n, 0)
 
+static int get_fpr(QEMUFile *f, void *pv, size_t size,
+                   const VMStateField *field)
+{
+    ppc_vsr_t *v = pv;
+
+    v->u64[0] = qemu_get_be64(f);
+
+    return 0;
+}
+
+static int put_fpr(QEMUFile *f, void *pv, size_t size,
+                   const VMStateField *field, QJSON *vmdesc)
+{
+    ppc_vsr_t *v = pv;
+
+    qemu_put_be64(f, v->u64[0]);
+    return 0;
+}
+
+static const VMStateInfo vmstate_info_fpr = {
+    .name = "fpr",
+    .get  = get_fpr,
+    .put  = put_fpr,
+};
+
+#define VMSTATE_FPR_ARRAY_V(_f, _s, _n, _v)                       \
+    VMSTATE_SUB_ARRAY(_f, _s, 0, _n, _v, vmstate_info_fpr, ppc_vsr_t)
+
+#define VMSTATE_FPR_ARRAY(_f, _s, _n)                             \
+    VMSTATE_FPR_ARRAY_V(_f, _s, _n, 0)
+
+static int get_vsr(QEMUFile *f, void *pv, size_t size,
+                   const VMStateField *field)
+{
+    ppc_vsr_t *v = pv;
+
+    v->u64[1] = qemu_get_be64(f);
+
+    return 0;
+}
+
+static int put_vsr(QEMUFile *f, void *pv, size_t size,
+                   const VMStateField *field, QJSON *vmdesc)
+{
+    ppc_vsr_t *v = pv;
+
+    qemu_put_be64(f, v->u64[1]);
+    return 0;
+}
+
+static const VMStateInfo vmstate_info_vsr = {
+    .name = "vsr",
+    .get  = get_vsr,
+    .put  = put_vsr,
+};
+
+#define VMSTATE_VSR_ARRAY_V(_f, _s, _n, _v)                       \
+    VMSTATE_SUB_ARRAY(_f, _s, 0, _n, _v, vmstate_info_vsr, ppc_vsr_t)
+
+#define VMSTATE_VSR_ARRAY(_f, _s, _n)                             \
+    VMSTATE_VSR_ARRAY_V(_f, _s, _n, 0)
+
 static bool cpu_pre_2_8_migration(void *opaque, int version_id)
 {
     PowerPCCPU *cpu = opaque;
@@ -354,7 +416,7 @@ static const VMStateDescription vmstate_fpu = {
     .minimum_version_id = 1,
     .needed = fpu_needed,
     .fields = (VMStateField[]) {
-        VMSTATE_FLOAT64_ARRAY(env.fpr, PowerPCCPU, 32),
+        VMSTATE_FPR_ARRAY(env.vsr, PowerPCCPU, 32),
         VMSTATE_UINTTL(env.fpscr, PowerPCCPU),
         VMSTATE_END_OF_LIST()
     },
@@ -373,7 +435,7 @@ static const VMStateDescription vmstate_altivec = {
     .minimum_version_id = 1,
     .needed = altivec_needed,
     .fields = (VMStateField[]) {
-        VMSTATE_AVR_ARRAY(env.avr, PowerPCCPU, 32),
+        VMSTATE_AVR_ARRAY(env.vsr, PowerPCCPU, 32),
         VMSTATE_UINT32(env.vscr, PowerPCCPU),
         VMSTATE_END_OF_LIST()
     },
@@ -392,7 +454,7 @@ static const VMStateDescription vmstate_vsx = {
     .minimum_version_id = 1,
     .needed = vsx_needed,
     .fields = (VMStateField[]) {
-        VMSTATE_UINT64_ARRAY(env.vsr, PowerPCCPU, 32),
+        VMSTATE_VSR_ARRAY(env.vsr, PowerPCCPU, 32),
         VMSTATE_END_OF_LIST()
     },
 };
diff --git a/target/ppc/monitor.c b/target/ppc/monitor.c
index 14915119fc..1db9396b2e 100644
--- a/target/ppc/monitor.c
+++ b/target/ppc/monitor.c
@@ -123,8 +123,8 @@ int target_get_monitor_def(CPUState *cs, const char *name, uint64_t *pval)
 
     /* Floating point registers */
     if ((qemu_tolower(name[0]) == 'f') &&
-        ppc_cpu_get_reg_num(name + 1, ARRAY_SIZE(env->fpr), &regnum)) {
-        *pval = env->fpr[regnum];
+        ppc_cpu_get_reg_num(name + 1, 32, &regnum)) {
+        *pval = env->vsr[regnum].u64[0];
         return 0;
     }
 
diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index 5923c688cd..8e89aec14d 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -6657,22 +6657,22 @@ GEN_TM_PRIV_NOOP(trechkpt);
 
 static inline void get_fpr(TCGv_i64 dst, int regno)
 {
-    tcg_gen_ld_i64(dst, cpu_env, offsetof(CPUPPCState, fpr[regno]));
+    tcg_gen_ld_i64(dst, cpu_env, offsetof(CPUPPCState, vsr[regno].u64[0]));
 }
 
 static inline void set_fpr(int regno, TCGv_i64 src)
 {
-    tcg_gen_st_i64(src, cpu_env, offsetof(CPUPPCState, fpr[regno]));
+    tcg_gen_st_i64(src, cpu_env, offsetof(CPUPPCState, vsr[regno].u64[0]));
 }
 
 static inline void get_avr64(TCGv_i64 dst, int regno, bool high)
 {
 #ifdef HOST_WORDS_BIGENDIAN
     tcg_gen_ld_i64(dst, cpu_env, offsetof(CPUPPCState,
-                                          avr[regno].u64[(high ? 0 : 1)]));
+                                          vsr[32 + regno].u64[(high ? 0 : 1)]));
 #else
     tcg_gen_ld_i64(dst, cpu_env, offsetof(CPUPPCState,
-                                          avr[regno].u64[(high ? 1 : 0)]));
+                                          vsr[32 + regno].u64[(high ? 1 : 0)]));
 #endif
 }
 
@@ -6680,10 +6680,10 @@ static inline void set_avr64(int regno, TCGv_i64 src, bool high)
 {
 #ifdef HOST_WORDS_BIGENDIAN
     tcg_gen_st_i64(src, cpu_env, offsetof(CPUPPCState,
-                                          avr[regno].u64[(high ? 0 : 1)]));
+                                          vsr[32 + regno].u64[(high ? 0 : 1)]));
 #else
     tcg_gen_st_i64(src, cpu_env, offsetof(CPUPPCState,
-                                          avr[regno].u64[(high ? 1 : 0)]));
+                                          vsr[32 + regno].u64[(high ? 1 : 0)]));
 #endif
 }
 
@@ -7434,7 +7434,7 @@ void ppc_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
             if ((i & (RFPL - 1)) == 0) {
                 cpu_fprintf(f, "FPR%02d", i);
             }
-            cpu_fprintf(f, " %016" PRIx64, *((uint64_t *)&env->fpr[i]));
+            cpu_fprintf(f, " %016" PRIx64, *((uint64_t *)&env->vsr[i].u64[0]));
             if ((i & (RFPL - 1)) == (RFPL - 1)) {
                 cpu_fprintf(f, "\n");
             }
diff --git a/target/ppc/translate/dfp-impl.inc.c b/target/ppc/translate/dfp-impl.inc.c
index 634ef73b8a..6c556dc2e1 100644
--- a/target/ppc/translate/dfp-impl.inc.c
+++ b/target/ppc/translate/dfp-impl.inc.c
@@ -3,7 +3,7 @@
 static inline TCGv_ptr gen_fprp_ptr(int reg)
 {
     TCGv_ptr r = tcg_temp_new_ptr();
-    tcg_gen_addi_ptr(r, cpu_env, offsetof(CPUPPCState, fpr[reg]));
+    tcg_gen_addi_ptr(r, cpu_env, offsetof(CPUPPCState, vsr[reg].u64[0]));
     return r;
 }
 
diff --git a/target/ppc/translate/vmx-impl.inc.c b/target/ppc/translate/vmx-impl.inc.c
index 30046c6e31..75d2b2280f 100644
--- a/target/ppc/translate/vmx-impl.inc.c
+++ b/target/ppc/translate/vmx-impl.inc.c
@@ -10,10 +10,15 @@
 static inline TCGv_ptr gen_avr_ptr(int reg)
 {
     TCGv_ptr r = tcg_temp_new_ptr();
-    tcg_gen_addi_ptr(r, cpu_env, offsetof(CPUPPCState, avr[reg]));
+    tcg_gen_addi_ptr(r, cpu_env, offsetof(CPUPPCState, vsr[32 + reg].u64[0]));
     return r;
 }
 
+static inline long avr64_offset(int reg, bool high)
+{
+    return offsetof(CPUPPCState, vsr[32 + reg].u64[(high ? 0 : 1)]);
+}
+
 #define GEN_VR_LDX(name, opc2, opc3)                                          \
 static void glue(gen_, name)(DisasContext *ctx)                                       \
 {                                                                             \
diff --git a/target/ppc/translate/vsx-impl.inc.c b/target/ppc/translate/vsx-impl.inc.c
index 20e1fd9324..1608ad48b1 100644
--- a/target/ppc/translate/vsx-impl.inc.c
+++ b/target/ppc/translate/vsx-impl.inc.c
@@ -2,12 +2,12 @@
 
 static inline void get_vsr(TCGv_i64 dst, int n)
 {
-    tcg_gen_ld_i64(dst, cpu_env, offsetof(CPUPPCState, vsr[n]));
+    tcg_gen_ld_i64(dst, cpu_env, offsetof(CPUPPCState, vsr[n].u64[1]));
 }
 
 static inline void set_vsr(int n, TCGv_i64 src)
 {
-    tcg_gen_st_i64(src, cpu_env, offsetof(CPUPPCState, vsr[n]));
+    tcg_gen_st_i64(src, cpu_env, offsetof(CPUPPCState, vsr[n].u64[1]));
 }
 
 static inline void get_cpu_vsrh(TCGv_i64 dst, int n)
diff --git a/target/ppc/translate_init.inc.c b/target/ppc/translate_init.inc.c
index 168d0cec28..b83097141c 100644
--- a/target/ppc/translate_init.inc.c
+++ b/target/ppc/translate_init.inc.c
@@ -9486,7 +9486,7 @@ static bool avr_need_swap(CPUPPCState *env)
 static int gdb_get_float_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
 {
     if (n < 32) {
-        stfq_p(mem_buf, env->fpr[n]);
+        stfq_p(mem_buf, env->vsr[n].u64[0]);
         ppc_maybe_bswap_register(env, mem_buf, 8);
         return 8;
     }
@@ -9502,7 +9502,7 @@ static int gdb_set_float_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
 {
     if (n < 32) {
         ppc_maybe_bswap_register(env, mem_buf, 8);
-        env->fpr[n] = ldfq_p(mem_buf);
+        env->vsr[n].u64[0] = ldfq_p(mem_buf);
         return 8;
     }
     if (n == 32) {
@@ -9517,11 +9517,11 @@ static int gdb_get_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
 {
     if (n < 32) {
         if (!avr_need_swap(env)) {
-            stq_p(mem_buf, env->avr[n].u64[0]);
-            stq_p(mem_buf+8, env->avr[n].u64[1]);
+            stq_p(mem_buf, env->vsr[32 + n].u64[0]);
+            stq_p(mem_buf + 8, env->vsr[32 + n].u64[1]);
         } else {
-            stq_p(mem_buf, env->avr[n].u64[1]);
-            stq_p(mem_buf+8, env->avr[n].u64[0]);
+            stq_p(mem_buf, env->vsr[32 + n].u64[1]);
+            stq_p(mem_buf + 8, env->vsr[32 + n].u64[0]);
         }
         ppc_maybe_bswap_register(env, mem_buf, 8);
         ppc_maybe_bswap_register(env, mem_buf + 8, 8);
@@ -9546,11 +9546,11 @@ static int gdb_set_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
         ppc_maybe_bswap_register(env, mem_buf, 8);
         ppc_maybe_bswap_register(env, mem_buf + 8, 8);
         if (!avr_need_swap(env)) {
-            env->avr[n].u64[0] = ldq_p(mem_buf);
-            env->avr[n].u64[1] = ldq_p(mem_buf+8);
+            env->vsr[32 + n].u64[0] = ldq_p(mem_buf);
+            env->vsr[32 + n].u64[1] = ldq_p(mem_buf + 8);
         } else {
-            env->avr[n].u64[1] = ldq_p(mem_buf);
-            env->avr[n].u64[0] = ldq_p(mem_buf+8);
+            env->vsr[32 + n].u64[1] = ldq_p(mem_buf);
+            env->vsr[32 + n].u64[0] = ldq_p(mem_buf + 8);
         }
         return 16;
     }
@@ -9623,7 +9623,7 @@ static int gdb_set_spe_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
 static int gdb_get_vsx_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
 {
     if (n < 32) {
-        stq_p(mem_buf, env->vsr[n]);
+        stq_p(mem_buf, env->vsr[n].u64[1]);
         ppc_maybe_bswap_register(env, mem_buf, 8);
         return 8;
     }
@@ -9634,7 +9634,7 @@ static int gdb_set_vsx_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
 {
     if (n < 32) {
         ppc_maybe_bswap_register(env, mem_buf, 8);
-        env->vsr[n] = ldq_p(mem_buf);
+        env->vsr[n].u64[1] = ldq_p(mem_buf);
         return 8;
     }
     return 0;
-- 
2.17.2