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Diffstat (limited to 'target-ppc/translate.c')
-rw-r--r--target-ppc/translate.c151
1 files changed, 60 insertions, 91 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 3086ec5940..715bc74ea8 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -196,6 +196,7 @@ typedef struct DisasContext {
int access_type;
/* Translation flags */
int le_mode;
+ TCGMemOp default_tcg_memop_mask;
#if defined(TARGET_PPC64)
int sf_mode;
int has_cfar;
@@ -210,6 +211,16 @@ typedef struct DisasContext {
uint64_t insns_flags2;
} DisasContext;
+/* Return true iff byteswap is needed in a scalar memop */
+static inline bool need_byteswap(const DisasContext *ctx)
+{
+#if defined(TARGET_WORDS_BIGENDIAN)
+ return ctx->le_mode;
+#else
+ return !ctx->le_mode;
+#endif
+}
+
/* True when active word size < size of target_long. */
#ifdef TARGET_PPC64
# define NARROW_MODE(C) (!(C)->sf_mode)
@@ -2660,29 +2671,20 @@ static inline void gen_qemu_ld8s(DisasContext *ctx, TCGv arg1, TCGv arg2)
static inline void gen_qemu_ld16u(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- tcg_gen_qemu_ld16u(arg1, arg2, ctx->mem_idx);
- if (unlikely(ctx->le_mode)) {
- tcg_gen_bswap16_tl(arg1, arg1);
- }
+ TCGMemOp op = MO_UW | ctx->default_tcg_memop_mask;
+ tcg_gen_qemu_ld_tl(arg1, arg2, ctx->mem_idx, op);
}
static inline void gen_qemu_ld16s(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- if (unlikely(ctx->le_mode)) {
- tcg_gen_qemu_ld16u(arg1, arg2, ctx->mem_idx);
- tcg_gen_bswap16_tl(arg1, arg1);
- tcg_gen_ext16s_tl(arg1, arg1);
- } else {
- tcg_gen_qemu_ld16s(arg1, arg2, ctx->mem_idx);
- }
+ TCGMemOp op = MO_SW | ctx->default_tcg_memop_mask;
+ tcg_gen_qemu_ld_tl(arg1, arg2, ctx->mem_idx, op);
}
static inline void gen_qemu_ld32u(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- tcg_gen_qemu_ld32u(arg1, arg2, ctx->mem_idx);
- if (unlikely(ctx->le_mode)) {
- tcg_gen_bswap32_tl(arg1, arg1);
- }
+ TCGMemOp op = MO_UL | ctx->default_tcg_memop_mask;
+ tcg_gen_qemu_ld_tl(arg1, arg2, ctx->mem_idx, op);
}
static void gen_qemu_ld32u_i64(DisasContext *ctx, TCGv_i64 val, TCGv addr)
@@ -2695,12 +2697,8 @@ static void gen_qemu_ld32u_i64(DisasContext *ctx, TCGv_i64 val, TCGv addr)
static inline void gen_qemu_ld32s(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- if (unlikely(ctx->le_mode)) {
- tcg_gen_qemu_ld32u(arg1, arg2, ctx->mem_idx);
- tcg_gen_bswap32_tl(arg1, arg1);
- tcg_gen_ext32s_tl(arg1, arg1);
- } else
- tcg_gen_qemu_ld32s(arg1, arg2, ctx->mem_idx);
+ TCGMemOp op = MO_SL | ctx->default_tcg_memop_mask;
+ tcg_gen_qemu_ld_tl(arg1, arg2, ctx->mem_idx, op);
}
static void gen_qemu_ld32s_i64(DisasContext *ctx, TCGv_i64 val, TCGv addr)
@@ -2713,10 +2711,8 @@ static void gen_qemu_ld32s_i64(DisasContext *ctx, TCGv_i64 val, TCGv addr)
static inline void gen_qemu_ld64(DisasContext *ctx, TCGv_i64 arg1, TCGv arg2)
{
- tcg_gen_qemu_ld64(arg1, arg2, ctx->mem_idx);
- if (unlikely(ctx->le_mode)) {
- tcg_gen_bswap64_i64(arg1, arg1);
- }
+ TCGMemOp op = MO_Q | ctx->default_tcg_memop_mask;
+ tcg_gen_qemu_ld_i64(arg1, arg2, ctx->mem_idx, op);
}
static inline void gen_qemu_st8(DisasContext *ctx, TCGv arg1, TCGv arg2)
@@ -2726,28 +2722,14 @@ static inline void gen_qemu_st8(DisasContext *ctx, TCGv arg1, TCGv arg2)
static inline void gen_qemu_st16(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- if (unlikely(ctx->le_mode)) {
- TCGv t0 = tcg_temp_new();
- tcg_gen_ext16u_tl(t0, arg1);
- tcg_gen_bswap16_tl(t0, t0);
- tcg_gen_qemu_st16(t0, arg2, ctx->mem_idx);
- tcg_temp_free(t0);
- } else {
- tcg_gen_qemu_st16(arg1, arg2, ctx->mem_idx);
- }
+ TCGMemOp op = MO_UW | ctx->default_tcg_memop_mask;
+ tcg_gen_qemu_st_tl(arg1, arg2, ctx->mem_idx, op);
}
static inline void gen_qemu_st32(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- if (unlikely(ctx->le_mode)) {
- TCGv t0 = tcg_temp_new();
- tcg_gen_ext32u_tl(t0, arg1);
- tcg_gen_bswap32_tl(t0, t0);
- tcg_gen_qemu_st32(t0, arg2, ctx->mem_idx);
- tcg_temp_free(t0);
- } else {
- tcg_gen_qemu_st32(arg1, arg2, ctx->mem_idx);
- }
+ TCGMemOp op = MO_UL | ctx->default_tcg_memop_mask;
+ tcg_gen_qemu_st_tl(arg1, arg2, ctx->mem_idx, op);
}
static void gen_qemu_st32_i64(DisasContext *ctx, TCGv_i64 val, TCGv addr)
@@ -2760,13 +2742,8 @@ static void gen_qemu_st32_i64(DisasContext *ctx, TCGv_i64 val, TCGv addr)
static inline void gen_qemu_st64(DisasContext *ctx, TCGv_i64 arg1, TCGv arg2)
{
- if (unlikely(ctx->le_mode)) {
- TCGv_i64 t0 = tcg_temp_new_i64();
- tcg_gen_bswap64_i64(t0, arg1);
- tcg_gen_qemu_st64(t0, arg2, ctx->mem_idx);
- tcg_temp_free_i64(t0);
- } else
- tcg_gen_qemu_st64(arg1, arg2, ctx->mem_idx);
+ TCGMemOp op = MO_Q | ctx->default_tcg_memop_mask;
+ tcg_gen_qemu_st_i64(arg1, arg2, ctx->mem_idx, op);
}
#define GEN_LD(name, ldop, opc, type) \
@@ -2910,6 +2887,8 @@ static void gen_lq(DisasContext *ctx)
EA = tcg_temp_new();
gen_addr_imm_index(ctx, EA, 0x0F);
+ /* We only need to swap high and low halves. gen_qemu_ld64 does necessary
+ 64-bit byteswap already. */
if (unlikely(ctx->le_mode)) {
gen_qemu_ld64(ctx, cpu_gpr[rd+1], EA);
gen_addr_add(ctx, EA, EA, 8);
@@ -3028,6 +3007,8 @@ static void gen_std(DisasContext *ctx)
EA = tcg_temp_new();
gen_addr_imm_index(ctx, EA, 0x03);
+ /* We only need to swap high and low halves. gen_qemu_st64 does
+ necessary 64-bit byteswap already. */
if (unlikely(ctx->le_mode)) {
gen_qemu_st64(ctx, cpu_gpr[rs+1], EA);
gen_addr_add(ctx, EA, EA, 8);
@@ -3057,23 +3038,20 @@ static void gen_std(DisasContext *ctx)
}
#endif
/*** Integer load and store with byte reverse ***/
+
/* lhbrx */
static inline void gen_qemu_ld16ur(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- tcg_gen_qemu_ld16u(arg1, arg2, ctx->mem_idx);
- if (likely(!ctx->le_mode)) {
- tcg_gen_bswap16_tl(arg1, arg1);
- }
+ TCGMemOp op = MO_UW | (ctx->default_tcg_memop_mask ^ MO_BSWAP);
+ tcg_gen_qemu_ld_tl(arg1, arg2, ctx->mem_idx, op);
}
GEN_LDX(lhbr, ld16ur, 0x16, 0x18, PPC_INTEGER);
/* lwbrx */
static inline void gen_qemu_ld32ur(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- tcg_gen_qemu_ld32u(arg1, arg2, ctx->mem_idx);
- if (likely(!ctx->le_mode)) {
- tcg_gen_bswap32_tl(arg1, arg1);
- }
+ TCGMemOp op = MO_UL | (ctx->default_tcg_memop_mask ^ MO_BSWAP);
+ tcg_gen_qemu_ld_tl(arg1, arg2, ctx->mem_idx, op);
}
GEN_LDX(lwbr, ld32ur, 0x16, 0x10, PPC_INTEGER);
@@ -3081,10 +3059,8 @@ GEN_LDX(lwbr, ld32ur, 0x16, 0x10, PPC_INTEGER);
/* ldbrx */
static inline void gen_qemu_ld64ur(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- tcg_gen_qemu_ld64(arg1, arg2, ctx->mem_idx);
- if (likely(!ctx->le_mode)) {
- tcg_gen_bswap64_tl(arg1, arg1);
- }
+ TCGMemOp op = MO_Q | (ctx->default_tcg_memop_mask ^ MO_BSWAP);
+ tcg_gen_qemu_ld_i64(arg1, arg2, ctx->mem_idx, op);
}
GEN_LDX_E(ldbr, ld64ur, 0x14, 0x10, PPC_NONE, PPC2_DBRX);
#endif /* TARGET_PPC64 */
@@ -3092,30 +3068,16 @@ GEN_LDX_E(ldbr, ld64ur, 0x14, 0x10, PPC_NONE, PPC2_DBRX);
/* sthbrx */
static inline void gen_qemu_st16r(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- if (likely(!ctx->le_mode)) {
- TCGv t0 = tcg_temp_new();
- tcg_gen_ext16u_tl(t0, arg1);
- tcg_gen_bswap16_tl(t0, t0);
- tcg_gen_qemu_st16(t0, arg2, ctx->mem_idx);
- tcg_temp_free(t0);
- } else {
- tcg_gen_qemu_st16(arg1, arg2, ctx->mem_idx);
- }
+ TCGMemOp op = MO_UW | (ctx->default_tcg_memop_mask ^ MO_BSWAP);
+ tcg_gen_qemu_st_tl(arg1, arg2, ctx->mem_idx, op);
}
GEN_STX(sthbr, st16r, 0x16, 0x1C, PPC_INTEGER);
/* stwbrx */
static inline void gen_qemu_st32r(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- if (likely(!ctx->le_mode)) {
- TCGv t0 = tcg_temp_new();
- tcg_gen_ext32u_tl(t0, arg1);
- tcg_gen_bswap32_tl(t0, t0);
- tcg_gen_qemu_st32(t0, arg2, ctx->mem_idx);
- tcg_temp_free(t0);
- } else {
- tcg_gen_qemu_st32(arg1, arg2, ctx->mem_idx);
- }
+ TCGMemOp op = MO_UL | (ctx->default_tcg_memop_mask ^ MO_BSWAP);
+ tcg_gen_qemu_st_tl(arg1, arg2, ctx->mem_idx, op);
}
GEN_STX(stwbr, st32r, 0x16, 0x14, PPC_INTEGER);
@@ -3123,14 +3085,8 @@ GEN_STX(stwbr, st32r, 0x16, 0x14, PPC_INTEGER);
/* stdbrx */
static inline void gen_qemu_st64r(DisasContext *ctx, TCGv arg1, TCGv arg2)
{
- if (likely(!ctx->le_mode)) {
- TCGv t0 = tcg_temp_new();
- tcg_gen_bswap64_tl(t0, arg1);
- tcg_gen_qemu_st64(t0, arg2, ctx->mem_idx);
- tcg_temp_free(t0);
- } else {
- tcg_gen_qemu_st64(arg1, arg2, ctx->mem_idx);
- }
+ TCGMemOp op = MO_Q | (ctx->default_tcg_memop_mask ^ MO_BSWAP);
+ tcg_gen_qemu_st_i64(arg1, arg2, ctx->mem_idx, op);
}
GEN_STX_E(stdbr, st64r, 0x14, 0x14, PPC_NONE, PPC2_DBRX);
#endif /* TARGET_PPC64 */
@@ -3550,7 +3506,9 @@ static void gen_lfdp(DisasContext *ctx)
}
gen_set_access_type(ctx, ACCESS_FLOAT);
EA = tcg_temp_new();
- gen_addr_imm_index(ctx, EA, 0); \
+ gen_addr_imm_index(ctx, EA, 0);
+ /* We only need to swap high and low halves. gen_qemu_ld64 does necessary
+ 64-bit byteswap already. */
if (unlikely(ctx->le_mode)) {
gen_qemu_ld64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
tcg_gen_addi_tl(EA, EA, 8);
@@ -3574,6 +3532,8 @@ static void gen_lfdpx(DisasContext *ctx)
gen_set_access_type(ctx, ACCESS_FLOAT);
EA = tcg_temp_new();
gen_addr_reg_index(ctx, EA);
+ /* We only need to swap high and low halves. gen_qemu_ld64 does necessary
+ 64-bit byteswap already. */
if (unlikely(ctx->le_mode)) {
gen_qemu_ld64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
tcg_gen_addi_tl(EA, EA, 8);
@@ -3722,7 +3682,9 @@ static void gen_stfdp(DisasContext *ctx)
}
gen_set_access_type(ctx, ACCESS_FLOAT);
EA = tcg_temp_new();
- gen_addr_imm_index(ctx, EA, 0); \
+ gen_addr_imm_index(ctx, EA, 0);
+ /* We only need to swap high and low halves. gen_qemu_st64 does necessary
+ 64-bit byteswap already. */
if (unlikely(ctx->le_mode)) {
gen_qemu_st64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
tcg_gen_addi_tl(EA, EA, 8);
@@ -3746,6 +3708,8 @@ static void gen_stfdpx(DisasContext *ctx)
gen_set_access_type(ctx, ACCESS_FLOAT);
EA = tcg_temp_new();
gen_addr_reg_index(ctx, EA);
+ /* We only need to swap high and low halves. gen_qemu_st64 does necessary
+ 64-bit byteswap already. */
if (unlikely(ctx->le_mode)) {
gen_qemu_st64(ctx, cpu_fpr[rD(ctx->opcode) + 1], EA);
tcg_gen_addi_tl(EA, EA, 8);
@@ -6716,6 +6680,8 @@ static void glue(gen_, name)(DisasContext *ctx)
EA = tcg_temp_new(); \
gen_addr_reg_index(ctx, EA); \
tcg_gen_andi_tl(EA, EA, ~0xf); \
+ /* We only need to swap high and low halves. gen_qemu_ld64 does necessary \
+ 64-bit byteswap already. */ \
if (ctx->le_mode) { \
gen_qemu_ld64(ctx, cpu_avrl[rD(ctx->opcode)], EA); \
tcg_gen_addi_tl(EA, EA, 8); \
@@ -6740,6 +6706,8 @@ static void gen_st##name(DisasContext *ctx) \
EA = tcg_temp_new(); \
gen_addr_reg_index(ctx, EA); \
tcg_gen_andi_tl(EA, EA, ~0xf); \
+ /* We only need to swap high and low halves. gen_qemu_st64 does necessary \
+ 64-bit byteswap already. */ \
if (ctx->le_mode) { \
gen_qemu_st64(ctx, cpu_avrl[rD(ctx->opcode)], EA); \
tcg_gen_addi_tl(EA, EA, 8); \
@@ -11742,6 +11710,7 @@ static inline void gen_intermediate_code_internal(PowerPCCPU *cpu,
ctx.insns_flags2 = env->insns_flags2;
ctx.access_type = -1;
ctx.le_mode = env->hflags & (1 << MSR_LE) ? 1 : 0;
+ ctx.default_tcg_memop_mask = ctx.le_mode ? MO_LE : MO_BE;
#if defined(TARGET_PPC64)
ctx.sf_mode = msr_is_64bit(env, env->msr);
ctx.has_cfar = !!(env->flags & POWERPC_FLAG_CFAR);
@@ -11807,7 +11776,7 @@ static inline void gen_intermediate_code_internal(PowerPCCPU *cpu,
ctx.nip, ctx.mem_idx, (int)msr_ir);
if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
gen_io_start();
- if (unlikely(ctx.le_mode)) {
+ if (unlikely(need_byteswap(&ctx))) {
ctx.opcode = bswap32(cpu_ldl_code(env, ctx.nip));
} else {
ctx.opcode = cpu_ldl_code(env, ctx.nip);
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-25 15:46:31 +0000