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Diffstat (limited to 'target-ppc/translate.c')
-rw-r--r--target-ppc/translate.c110
1 files changed, 72 insertions, 38 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index f97a3ed805..1c3986e88c 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -66,6 +66,7 @@ static TCGv cpu_nip;
static TCGv cpu_ctr;
static TCGv cpu_lr;
static TCGv cpu_xer;
+static TCGv cpu_reserve;
static TCGv_i32 cpu_fpscr;
static TCGv_i32 cpu_access_type;
@@ -161,6 +162,9 @@ void ppc_translate_init(void)
cpu_xer = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUState, xer), "xer");
+ cpu_reserve = tcg_global_mem_new(TCG_AREG0,
+ offsetof(CPUState, reserve), "reserve");
+
cpu_fpscr = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUState, fpscr), "fpscr");
@@ -2468,6 +2472,24 @@ static always_inline void gen_addr_register (TCGv EA,
tcg_gen_mov_tl(EA, cpu_gpr[rA(ctx->opcode)]);
}
+static always_inline void gen_check_align (DisasContext *ctx, TCGv EA, int mask)
+{
+ int l1 = gen_new_label();
+ TCGv t0 = tcg_temp_new();
+ TCGv_i32 t1, t2;
+ /* NIP cannot be restored if the memory exception comes from an helper */
+ gen_update_nip(ctx, ctx->nip - 4);
+ tcg_gen_andi_tl(t0, EA, mask);
+ tcg_gen_brcondi_tl(TCG_COND_EQ, t0, 0, l1);
+ t1 = tcg_const_i32(POWERPC_EXCP_ALIGN);
+ t2 = tcg_const_i32(0);
+ gen_helper_raise_exception_err(t1, t2);
+ tcg_temp_free_i32(t1);
+ tcg_temp_free_i32(t2);
+ gen_set_label(l1);
+ tcg_temp_free(t0);
+}
+
#if defined(TARGET_PPC64)
#define _GEN_MEM_FUNCS(name, mode) \
&gen_op_##name##_##mode, \
@@ -3220,67 +3242,79 @@ GEN_HANDLER(isync, 0x13, 0x16, 0x04, 0x03FFF801, PPC_MEM)
GEN_STOP(ctx);
}
-#define op_lwarx() (*gen_op_lwarx[ctx->mem_idx])()
-#define op_stwcx() (*gen_op_stwcx[ctx->mem_idx])()
-static GenOpFunc *gen_op_lwarx[NB_MEM_FUNCS] = {
- GEN_MEM_FUNCS(lwarx),
-};
-static GenOpFunc *gen_op_stwcx[NB_MEM_FUNCS] = {
- GEN_MEM_FUNCS(stwcx),
-};
-
/* lwarx */
GEN_HANDLER(lwarx, 0x1F, 0x14, 0x00, 0x00000001, PPC_RES)
{
- /* NIP cannot be restored if the memory exception comes from an helper */
- gen_update_nip(ctx, ctx->nip - 4);
+ TCGv t0 = tcg_temp_local_new();
gen_set_access_type(ACCESS_RES);
- gen_addr_reg_index(cpu_T[0], ctx);
- op_lwarx();
- tcg_gen_mov_tl(cpu_gpr[rD(ctx->opcode)], cpu_T[1]);
+ gen_addr_reg_index(t0, ctx);
+ gen_check_align(ctx, t0, 0x03);
+#if defined(TARGET_PPC64)
+ if (!ctx->sf_mode)
+ tcg_gen_ext32u_tl(t0, t0);
+#endif
+ gen_qemu_ld32u(cpu_gpr[rD(ctx->opcode)], t0, ctx->mem_idx);
+ tcg_gen_mov_tl(cpu_reserve, t0);
+ tcg_temp_free(t0);
}
/* stwcx. */
GEN_HANDLER2(stwcx_, "stwcx.", 0x1F, 0x16, 0x04, 0x00000000, PPC_RES)
{
- /* NIP cannot be restored if the memory exception comes from an helper */
- gen_update_nip(ctx, ctx->nip - 4);
+ int l1 = gen_new_label();
+ TCGv t0 = tcg_temp_local_new();
gen_set_access_type(ACCESS_RES);
- gen_addr_reg_index(cpu_T[0], ctx);
- tcg_gen_mov_tl(cpu_T[1], cpu_gpr[rS(ctx->opcode)]);
- op_stwcx();
+ gen_addr_reg_index(t0, ctx);
+ gen_check_align(ctx, t0, 0x03);
+#if defined(TARGET_PPC64)
+ if (!ctx->sf_mode)
+ tcg_gen_ext32u_tl(t0, t0);
+#endif
+ tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_xer);
+ tcg_gen_shri_i32(cpu_crf[0], cpu_crf[0], XER_SO);
+ tcg_gen_andi_i32(cpu_crf[0], cpu_crf[0], 1);
+ tcg_gen_brcond_tl(TCG_COND_NE, t0, cpu_reserve, l1);
+ tcg_gen_ori_i32(cpu_crf[0], cpu_crf[0], 1 << CRF_EQ);
+ gen_qemu_st32(cpu_gpr[rS(ctx->opcode)], t0, ctx->mem_idx);
+ gen_set_label(l1);
+ tcg_gen_movi_tl(cpu_reserve, -1);
+ tcg_temp_free(t0);
}
#if defined(TARGET_PPC64)
-#define op_ldarx() (*gen_op_ldarx[ctx->mem_idx])()
-#define op_stdcx() (*gen_op_stdcx[ctx->mem_idx])()
-static GenOpFunc *gen_op_ldarx[NB_MEM_FUNCS] = {
- GEN_MEM_FUNCS(ldarx),
-};
-static GenOpFunc *gen_op_stdcx[NB_MEM_FUNCS] = {
- GEN_MEM_FUNCS(stdcx),
-};
-
/* ldarx */
GEN_HANDLER(ldarx, 0x1F, 0x14, 0x02, 0x00000001, PPC_64B)
{
- /* NIP cannot be restored if the memory exception comes from an helper */
- gen_update_nip(ctx, ctx->nip - 4);
+ TCGv t0 = tcg_temp_local_new();
gen_set_access_type(ACCESS_RES);
- gen_addr_reg_index(cpu_T[0], ctx);
- op_ldarx();
- tcg_gen_mov_tl(cpu_gpr[rD(ctx->opcode)], cpu_T[1]);
+ gen_addr_reg_index(t0, ctx);
+ gen_check_align(ctx, t0, 0x07);
+ if (!ctx->sf_mode)
+ tcg_gen_ext32u_tl(t0, t0);
+ gen_qemu_ld64(cpu_gpr[rD(ctx->opcode)], t0, ctx->mem_idx);
+ tcg_gen_mov_tl(cpu_reserve, t0);
+ tcg_temp_free(t0);
}
/* stdcx. */
GEN_HANDLER2(stdcx_, "stdcx.", 0x1F, 0x16, 0x06, 0x00000000, PPC_64B)
{
- /* NIP cannot be restored if the memory exception comes from an helper */
- gen_update_nip(ctx, ctx->nip - 4);
+ int l1 = gen_new_label();
+ TCGv t0 = tcg_temp_local_new();
gen_set_access_type(ACCESS_RES);
- gen_addr_reg_index(cpu_T[0], ctx);
- tcg_gen_mov_tl(cpu_T[1], cpu_gpr[rS(ctx->opcode)]);
- op_stdcx();
+ gen_addr_reg_index(t0, ctx);
+ gen_check_align(ctx, t0, 0x07);
+ if (!ctx->sf_mode)
+ tcg_gen_ext32u_tl(t0, t0);
+ tcg_gen_trunc_tl_i32(cpu_crf[0], cpu_xer);
+ tcg_gen_shri_i32(cpu_crf[0], cpu_crf[0], XER_SO);
+ tcg_gen_andi_i32(cpu_crf[0], cpu_crf[0], 1);
+ tcg_gen_brcond_tl(TCG_COND_NE, t0, cpu_reserve, l1);
+ tcg_gen_ori_i32(cpu_crf[0], cpu_crf[0], 1 << CRF_EQ);
+ gen_qemu_st64(cpu_gpr[rS(ctx->opcode)], t0, ctx->mem_idx);
+ gen_set_label(l1);
+ tcg_gen_movi_tl(cpu_reserve, -1);
+ tcg_temp_free(t0);
}
#endif /* defined(TARGET_PPC64) */
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-07 03:57:03 +0000