diff options
| -rw-r--r-- | target-i386/translate.c | 106 |
1 files changed, 32 insertions, 74 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c index 8673f9533d..589c90c756 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -2384,78 +2384,36 @@ static inline void gen_stack_update(DisasContext *s, int addend) } } -/* generate a push. It depends on ss32, addseg and dflag */ -static void gen_push_T0(DisasContext *s) +/* Generate a push. It depends on ss32, addseg and dflag. */ +static void gen_push_v(DisasContext *s, TCGv val) { -#ifdef TARGET_X86_64 - if (CODE64(s)) { - gen_op_movq_A0_reg(R_ESP); - if (s->dflag != MO_16) { - gen_op_addq_A0_im(-8); - gen_op_st_v(s, MO_64, cpu_T[0], cpu_A0); - } else { - gen_op_addq_A0_im(-2); - gen_op_st_v(s, MO_16, cpu_T[0], cpu_A0); - } - gen_op_mov_reg_A0(MO_64, R_ESP); - } else -#endif - { - gen_op_movl_A0_reg(R_ESP); - gen_op_addl_A0_im(-1 << s->dflag); - if (s->ss32) { - if (s->addseg) { - tcg_gen_mov_tl(cpu_T[1], cpu_A0); - gen_op_addl_A0_seg(s, R_SS); - } - } else { - tcg_gen_ext16u_tl(cpu_A0, cpu_A0); - tcg_gen_mov_tl(cpu_T[1], cpu_A0); - gen_op_addl_A0_seg(s, R_SS); - } - gen_op_st_v(s, s->dflag, cpu_T[0], cpu_A0); - if (s->ss32 && !s->addseg) - gen_op_mov_reg_A0(MO_32, R_ESP); - else - gen_op_mov_reg_T1(MO_16 + s->ss32, R_ESP); - } -} + TCGMemOp a_ot, d_ot = mo_pushpop(s, s->dflag); + int size = 1 << d_ot; + TCGv new_esp = cpu_A0; + + tcg_gen_subi_tl(cpu_A0, cpu_regs[R_ESP], size); -/* generate a push. It depends on ss32, addseg and dflag */ -/* slower version for T1, only used for call Ev */ -static void gen_push_T1(DisasContext *s) -{ -#ifdef TARGET_X86_64 if (CODE64(s)) { - gen_op_movq_A0_reg(R_ESP); - if (s->dflag != MO_16) { - gen_op_addq_A0_im(-8); - gen_op_st_v(s, MO_64, cpu_T[1], cpu_A0); - } else { - gen_op_addq_A0_im(-2); - gen_op_st_v(s, MO_16, cpu_T[1], cpu_A0); - } - gen_op_mov_reg_A0(MO_64, R_ESP); - } else -#endif - { - gen_op_movl_A0_reg(R_ESP); - gen_op_addl_A0_im(-1 << s->dflag); - if (s->ss32) { - if (s->addseg) { - gen_op_addl_A0_seg(s, R_SS); - } - } else { - tcg_gen_ext16u_tl(cpu_A0, cpu_A0); + a_ot = MO_64; + } else if (s->ss32) { + a_ot = MO_32; + if (s->addseg) { + new_esp = cpu_tmp4; + tcg_gen_mov_tl(new_esp, cpu_A0); gen_op_addl_A0_seg(s, R_SS); + } else { + tcg_gen_ext32u_tl(cpu_A0, cpu_A0); } - gen_op_st_v(s, s->dflag, cpu_T[1], cpu_A0); - - if (s->ss32 && !s->addseg) - gen_op_mov_reg_A0(MO_32, R_ESP); - else - gen_stack_update(s, -1 << s->dflag); + } else { + a_ot = MO_16; + new_esp = cpu_tmp4; + tcg_gen_ext16u_tl(cpu_A0, cpu_A0); + tcg_gen_mov_tl(new_esp, cpu_A0); + gen_op_addl_A0_seg(s, R_SS); } + + gen_op_st_v(s, d_ot, val, cpu_A0); + gen_op_mov_reg_v(a_ot, R_ESP, new_esp); } /* two step pop is necessary for precise exceptions */ @@ -4984,7 +4942,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, } next_eip = s->pc - s->cs_base; tcg_gen_movi_tl(cpu_T[1], next_eip); - gen_push_T1(s); + gen_push_v(s, cpu_T[1]); gen_op_jmp_T0(); gen_eob(s); break; @@ -5034,7 +4992,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_eob(s); break; case 6: /* push Ev */ - gen_push_T0(s); + gen_push_v(s, cpu_T[0]); break; default: goto illegal_op; @@ -5276,7 +5234,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, /* push/pop */ case 0x50 ... 0x57: /* push */ gen_op_mov_TN_reg(MO_32, 0, (b & 7) | REX_B(s)); - gen_push_T0(s); + gen_push_v(s, cpu_T[0]); break; case 0x58 ... 0x5f: /* pop */ ot = mo_pushpop(s, dflag); @@ -5303,7 +5261,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, else val = (int8_t)insn_get(env, s, MO_8); tcg_gen_movi_tl(cpu_T[0], val); - gen_push_T0(s); + gen_push_v(s, cpu_T[0]); break; case 0x8f: /* pop Ev */ ot = mo_pushpop(s, dflag); @@ -5356,12 +5314,12 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, if (CODE64(s)) goto illegal_op; gen_op_movl_T0_seg(b >> 3); - gen_push_T0(s); + gen_push_v(s, cpu_T[0]); break; case 0x1a0: /* push fs */ case 0x1a8: /* push gs */ gen_op_movl_T0_seg((b >> 3) & 7); - gen_push_T0(s); + gen_push_v(s, cpu_T[0]); break; case 0x07: /* pop es */ case 0x17: /* pop ss */ @@ -6510,7 +6468,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, tval &= 0xffffffff; } tcg_gen_movi_tl(cpu_T[0], next_eip); - gen_push_T0(s); + gen_push_v(s, cpu_T[0]); gen_jmp(s, tval); } break; @@ -6606,7 +6564,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, } else { gen_update_cc_op(s); gen_helper_read_eflags(cpu_T[0], cpu_env); - gen_push_T0(s); + gen_push_v(s, cpu_T[0]); } break; case 0x9d: /* popf */ |