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added LAR/LSL - fixed INT3 and INTO EIP computation

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@149 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-05-10 21:37:05 +00:00
parent 2792c4f2af
commit 78c34e98cd
1 changed files with 22 additions and 2 deletions
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24
translate-i386.c
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@ -3249,7 +3249,7 @@ long disas_insn(DisasContext *s, uint8_t *pc_start)
case 0x90: /* nop */
break;
case 0xcc: /* int3 */
gen_exception(s, EXCP03_INT3, pc_start - s->cs_base);
gen_exception(s, EXCP03_INT3, s->pc - s->cs_base);
break;
case 0xcd: /* int N */
val = ldub(s->pc++);
@ -3261,7 +3261,7 @@ long disas_insn(DisasContext *s, uint8_t *pc_start)
case 0xce: /* into */
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_op_into();
gen_op_into(s->pc - s->cs_base);
break;
case 0xfa: /* cli */
if (!s->vm86) {
@ -3343,6 +3343,24 @@ long disas_insn(DisasContext *s, uint8_t *pc_start)
/* XXX: if cpl == 0, then should do something else */
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
break;
case 0x102: /* lar */
case 0x103: /* lsl */
if (s->vm86)
goto illegal_op;
ot = dflag ? OT_LONG : OT_WORD;
modrm = ldub(s->pc++);
reg = (modrm >> 3) & 7;
gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
gen_op_mov_TN_reg[ot][1][reg]();
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
if (b == 0x102)
gen_op_lar();
else
gen_op_lsl();
s->cc_op = CC_OP_EFLAGS;
gen_op_mov_reg_T1[ot][reg]();
break;
default:
goto illegal_op;
}
@ -3579,6 +3597,8 @@ static uint16_t opc_write_flags[NB_OPS] = {
[INDEX_op_cmpxchgl_T0_T1_EAX_cc] = CC_OSZAPC,
[INDEX_op_cmpxchg8b] = CC_Z,
[INDEX_op_lar] = CC_Z,
[INDEX_op_lsl] = CC_Z,
};
/* simpler form of an operation if no flags need to be generated */