diff options
| -rw-r--r-- | target-i386/translate.c | 72 |
1 files changed, 36 insertions, 36 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c index 9bbe969..6204764 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -845,47 +845,48 @@ static void gen_compute_eflags_c(DisasContext *s, TCGv reg) tcg_gen_extu_i32_tl(reg, cpu_tmp2_i32); } -/* compute all eflags to reg */ -static void gen_compute_eflags(DisasContext *s, TCGv reg) +/* compute all eflags to cc_src */ +static void gen_compute_eflags(DisasContext *s) { + if (s->cc_op == CC_OP_EFLAGS) { + return; + } gen_update_cc_op(s); gen_helper_cc_compute_all(cpu_tmp2_i32, cpu_env, cpu_cc_op); - if (TCGV_EQUAL(reg, cpu_cc_src)) { - tcg_gen_discard_tl(cpu_cc_dst); - set_cc_op(s, CC_OP_EFLAGS); - } - tcg_gen_extu_i32_tl(reg, cpu_tmp2_i32); + tcg_gen_discard_tl(cpu_cc_dst); + set_cc_op(s, CC_OP_EFLAGS); + tcg_gen_extu_i32_tl(cpu_cc_src, cpu_tmp2_i32); } /* compute eflags.P to reg */ static void gen_compute_eflags_p(DisasContext *s, TCGv reg) { - gen_compute_eflags(s, reg); - tcg_gen_shri_tl(reg, reg, 2); + gen_compute_eflags(s); + tcg_gen_shri_tl(reg, cpu_cc_src, 2); tcg_gen_andi_tl(reg, reg, 1); } /* compute eflags.S to reg */ static void gen_compute_eflags_s(DisasContext *s, TCGv reg) { - gen_compute_eflags(s, reg); - tcg_gen_shri_tl(reg, reg, 7); + gen_compute_eflags(s); + tcg_gen_shri_tl(reg, cpu_cc_src, 7); tcg_gen_andi_tl(reg, reg, 1); } /* compute eflags.O to reg */ static void gen_compute_eflags_o(DisasContext *s, TCGv reg) { - gen_compute_eflags(s, reg); - tcg_gen_shri_tl(reg, reg, 11); + gen_compute_eflags(s); + tcg_gen_shri_tl(reg, cpu_cc_src, 11); tcg_gen_andi_tl(reg, reg, 1); } /* compute eflags.Z to reg */ static void gen_compute_eflags_z(DisasContext *s, TCGv reg) { - gen_compute_eflags(s, reg); - tcg_gen_shri_tl(reg, reg, 6); + gen_compute_eflags(s); + tcg_gen_shri_tl(reg, cpu_cc_src, 6); tcg_gen_andi_tl(reg, reg, 1); } @@ -902,9 +903,9 @@ static inline void gen_setcc_slow_T0(DisasContext *s, int jcc_op) gen_compute_eflags_z(s, cpu_T[0]); break; case JCC_BE: - gen_compute_eflags(s, cpu_tmp0); - tcg_gen_shri_tl(cpu_T[0], cpu_tmp0, 6); - tcg_gen_or_tl(cpu_T[0], cpu_T[0], cpu_tmp0); + gen_compute_eflags(s); + tcg_gen_shri_tl(cpu_T[0], cpu_cc_src, 6); + tcg_gen_or_tl(cpu_T[0], cpu_T[0], cpu_cc_src); tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 1); break; case JCC_S: @@ -914,18 +915,18 @@ static inline void gen_setcc_slow_T0(DisasContext *s, int jcc_op) gen_compute_eflags_p(s, cpu_T[0]); break; case JCC_L: - gen_compute_eflags(s, cpu_tmp0); - tcg_gen_shri_tl(cpu_T[0], cpu_tmp0, 11); /* CC_O */ - tcg_gen_shri_tl(cpu_tmp0, cpu_tmp0, 7); /* CC_S */ + gen_compute_eflags(s); + tcg_gen_shri_tl(cpu_T[0], cpu_cc_src, 11); /* CC_O */ + tcg_gen_shri_tl(cpu_tmp0, cpu_cc_src, 7); /* CC_S */ tcg_gen_xor_tl(cpu_T[0], cpu_T[0], cpu_tmp0); tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 1); break; default: case JCC_LE: - gen_compute_eflags(s, cpu_tmp0); - tcg_gen_shri_tl(cpu_T[0], cpu_tmp0, 11); /* CC_O */ - tcg_gen_shri_tl(cpu_tmp4, cpu_tmp0, 7); /* CC_S */ - tcg_gen_shri_tl(cpu_tmp0, cpu_tmp0, 6); /* CC_Z */ + gen_compute_eflags(s); + tcg_gen_shri_tl(cpu_T[0], cpu_cc_src, 11); /* CC_O */ + tcg_gen_shri_tl(cpu_tmp4, cpu_cc_src, 7); /* CC_S */ + tcg_gen_shri_tl(cpu_tmp0, cpu_cc_src, 6); /* CC_Z */ tcg_gen_xor_tl(cpu_T[0], cpu_T[0], cpu_tmp4); tcg_gen_or_tl(cpu_T[0], cpu_T[0], cpu_tmp0); tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 1); @@ -1619,7 +1620,7 @@ static void gen_rot_rm_T1(DisasContext *s, int ot, int op1, } /* update eflags. It is needed anyway most of the time, do it always. */ - gen_compute_eflags(s, cpu_cc_src); + gen_compute_eflags(s); assert(s->cc_op == CC_OP_EFLAGS); label2 = gen_new_label(); @@ -1696,7 +1697,7 @@ static void gen_rot_rm_im(DisasContext *s, int ot, int op1, int op2, if (op2 != 0) { /* update eflags */ - gen_compute_eflags(s, cpu_cc_src); + gen_compute_eflags(s); assert(s->cc_op == CC_OP_EFLAGS); tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, ~(CC_O | CC_C)); @@ -1720,8 +1721,7 @@ static void gen_rot_rm_im(DisasContext *s, int ot, int op1, int op2, static void gen_rotc_rm_T1(DisasContext *s, int ot, int op1, int is_right) { - gen_update_cc_op(s); - gen_compute_eflags(s, cpu_cc_src); + gen_compute_eflags(s); assert(s->cc_op == CC_OP_EFLAGS); /* load */ @@ -6483,7 +6483,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, if (CODE64(s) && !(s->cpuid_ext3_features & CPUID_EXT3_LAHF_LM)) goto illegal_op; gen_op_mov_TN_reg(OT_BYTE, 0, R_AH); - gen_compute_eflags(s, cpu_cc_src); + gen_compute_eflags(s); tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, CC_O); tcg_gen_andi_tl(cpu_T[0], cpu_T[0], CC_S | CC_Z | CC_A | CC_P | CC_C); tcg_gen_or_tl(cpu_cc_src, cpu_cc_src, cpu_T[0]); @@ -6491,21 +6491,21 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, case 0x9f: /* lahf */ if (CODE64(s) && !(s->cpuid_ext3_features & CPUID_EXT3_LAHF_LM)) goto illegal_op; - gen_compute_eflags(s, cpu_T[0]); + gen_compute_eflags(s); /* Note: gen_compute_eflags() only gives the condition codes */ - tcg_gen_ori_tl(cpu_T[0], cpu_T[0], 0x02); + tcg_gen_ori_tl(cpu_T[0], cpu_cc_src, 0x02); gen_op_mov_reg_T0(OT_BYTE, R_AH); break; case 0xf5: /* cmc */ - gen_compute_eflags(s, cpu_cc_src); + gen_compute_eflags(s); tcg_gen_xori_tl(cpu_cc_src, cpu_cc_src, CC_C); break; case 0xf8: /* clc */ - gen_compute_eflags(s, cpu_cc_src); + gen_compute_eflags(s); tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, ~CC_C); break; case 0xf9: /* stc */ - gen_compute_eflags(s, cpu_cc_src); + gen_compute_eflags(s); tcg_gen_ori_tl(cpu_cc_src, cpu_cc_src, CC_C); break; case 0xfc: /* cld */ @@ -7381,7 +7381,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, } else { gen_op_mov_reg_v(ot, rm, t0); } - gen_compute_eflags(s, cpu_cc_src); + gen_compute_eflags(s); tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, ~CC_Z); tcg_gen_or_tl(cpu_cc_src, cpu_cc_src, t2); tcg_temp_free(t0); |