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cmpxchg 64 bit fix

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4521 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2008-05-22 09:36:08 +00:00
parent d6205959f9
commit 1130328ecb
1 changed files with 10 additions and 4 deletions
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14
target-i386/translate.c
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@ -4286,7 +4286,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
case 0x1b0: case 0x1b0:
case 0x1b1: /* cmpxchg Ev, Gv */ case 0x1b1: /* cmpxchg Ev, Gv */
{ {
int label1; int label1, label2;
if ((b & 1) == 0) if ((b & 1) == 0)
ot = OT_BYTE; ot = OT_BYTE;
@ -4309,12 +4309,18 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
tcg_gen_sub_tl(cpu_T3, cpu_T3, cpu_T[0]); tcg_gen_sub_tl(cpu_T3, cpu_T3, cpu_T[0]);
gen_extu(ot, cpu_T3); gen_extu(ot, cpu_T3);
tcg_gen_brcond_tl(TCG_COND_EQ, cpu_T3, tcg_const_tl(0), label1); tcg_gen_brcond_tl(TCG_COND_EQ, cpu_T3, tcg_const_tl(0), label1);
if (mod == 3) {
label2 = gen_new_label();
gen_op_mov_reg_T0(ot, R_EAX);
tcg_gen_br(label2);
gen_set_label(label1);
gen_op_mov_reg_T1(ot, rm);
gen_set_label(label2);
} else {
tcg_gen_mov_tl(cpu_T[1], cpu_T[0]); tcg_gen_mov_tl(cpu_T[1], cpu_T[0]);
gen_op_mov_reg_T0(ot, R_EAX); gen_op_mov_reg_T0(ot, R_EAX);
gen_set_label(label1); gen_set_label(label1);
if (mod == 3) { /* always store */
gen_op_mov_reg_T1(ot, rm);
} else {
gen_op_st_T1_A0(ot + s->mem_index); gen_op_st_T1_A0(ot + s->mem_index);
} }
tcg_gen_mov_tl(cpu_cc_src, cpu_T[0]); tcg_gen_mov_tl(cpu_cc_src, cpu_T[0]);