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convert eflags manipulation insns to TCG

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4515 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2008-05-21 17:07:20 +00:00
parent 3bd7da9e18
commit bd7a7b33df
5 changed files with 46 additions and 148 deletions
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42
target-i386/translate.c
View file

@ -5733,7 +5733,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
} else {
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_op_movl_T0_eflags();
tcg_gen_helper_1_0(helper_read_eflags, cpu_T[0]);
gen_push_T0(s);
}
break;
@ -5746,22 +5746,28 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_pop_T0(s);
if (s->cpl == 0) {
if (s->dflag) {
gen_op_movl_eflags_T0_cpl0();
tcg_gen_helper_0_2(helper_write_eflags, cpu_T[0],
tcg_const_i32((TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK | IOPL_MASK)));
} else {
gen_op_movw_eflags_T0_cpl0();
tcg_gen_helper_0_2(helper_write_eflags, cpu_T[0],
tcg_const_i32((TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK | IOPL_MASK) & 0xffff));
}
} else {
if (s->cpl <= s->iopl) {
if (s->dflag) {
gen_op_movl_eflags_T0_io();
tcg_gen_helper_0_2(helper_write_eflags, cpu_T[0],
tcg_const_i32((TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK)));
} else {
gen_op_movw_eflags_T0_io();
tcg_gen_helper_0_2(helper_write_eflags, cpu_T[0],
tcg_const_i32((TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK) & 0xffff));
}
} else {
if (s->dflag) {
gen_op_movl_eflags_T0();
tcg_gen_helper_0_2(helper_write_eflags, cpu_T[0],
tcg_const_i32((TF_MASK | AC_MASK | ID_MASK | NT_MASK)));
} else {
gen_op_movw_eflags_T0();
tcg_gen_helper_0_2(helper_write_eflags, cpu_T[0],
tcg_const_i32((TF_MASK | AC_MASK | ID_MASK | NT_MASK) & 0xffff));
}
}
}
@ -5778,7 +5784,10 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_op_mov_TN_reg(OT_BYTE, 0, R_AH);
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_op_movb_eflags_T0();
gen_compute_eflags(cpu_cc_src);
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]);
s->cc_op = CC_OP_EFLAGS;
break;
case 0x9f: /* lahf */
@ -5786,25 +5795,30 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
goto illegal_op;
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_op_movl_T0_eflags();
gen_compute_eflags(cpu_T[0]);
/* Note: gen_compute_eflags() only gives the condition codes */
tcg_gen_ori_tl(cpu_T[0], cpu_T[0], 0x02);
gen_op_mov_reg_T0(OT_BYTE, R_AH);
break;
case 0xf5: /* cmc */
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_op_cmc();
gen_compute_eflags(cpu_cc_src);
tcg_gen_xori_tl(cpu_cc_src, cpu_cc_src, CC_C);
s->cc_op = CC_OP_EFLAGS;
break;
case 0xf8: /* clc */
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_op_clc();
gen_compute_eflags(cpu_cc_src);
tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, ~CC_C);
s->cc_op = CC_OP_EFLAGS;
break;
case 0xf9: /* stc */
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_op_stc();
gen_compute_eflags(cpu_cc_src);
tcg_gen_ori_tl(cpu_cc_src, cpu_cc_src, CC_C);
s->cc_op = CC_OP_EFLAGS;
break;
case 0xfc: /* cld */
@ -6127,7 +6141,9 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
goto illegal_op;
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_op_salc();
gen_compute_eflags_c(cpu_T[0]);
tcg_gen_neg_tl(cpu_T[0], cpu_T[0]);
gen_op_mov_reg_T0(OT_BYTE, R_EAX);
break;
case 0xe0: /* loopnz */
case 0xe1: /* loopz */