openkylin
/
qemu
mirror of https://gitee.com/openkylin/qemu.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

lcall and ljmp fixes in 64 bit mode - sysret fix 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1375 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-04-23 17:53:12 +00:00
parent a6f379881e
commit aba9d61e34
1 changed files with 31 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
target-i386/translate.c
View File

@ -2231,6 +2231,16 @@ static void gen_movtl_T1_im(target_ulong val)
#endif
}
static void gen_add_A0_im(DisasContext *s, int val)
{
#ifdef TARGET_X86_64
if (CODE64(s))
gen_op_addq_A0_im(val);
else
#endif
gen_op_addl_A0_im(val);
}
static GenOpFunc1 *gen_ldq_env_A0[3] = {
gen_op_ldq_raw_env_A0,
#ifndef CONFIG_USER_ONLY
@ -3382,9 +3392,13 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
goto illegal_op;
}
if (CODE64(s)) {
if (op >= 2 && op <= 5) {
if (op == 2 || op == 4) {
/* operand size for jumps is 64 bit */
ot = OT_QUAD;
} else if (op == 3 || op == 5) {
/* for call calls, the operand is 16 or 32 bit, even
in long mode */
ot = dflag ? OT_LONG : OT_WORD;
} else if (op == 6) {
/* default push size is 64 bit */
ot = dflag ? OT_QUAD : OT_WORD;
@ -3425,14 +3439,14 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
break;
case 3: /* lcall Ev */
gen_op_ld_T1_A0[ot + s->mem_index]();
gen_op_addl_A0_im(1 << (ot - OT_WORD + 1));
gen_add_A0_im(s, 1 << (ot - OT_WORD + 1));
gen_op_ldu_T0_A0[OT_WORD + s->mem_index]();
do_lcall:
if (s->pe && !s->vm86) {
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_jmp_im(pc_start - s->cs_base);
gen_op_lcall_protected_T0_T1(dflag, s->pc - s->cs_base);
gen_op_lcall_protected_T0_T1(dflag, s->pc - pc_start);
} else {
gen_op_lcall_real_T0_T1(dflag, s->pc - s->cs_base);
}
@ -3446,14 +3460,14 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
break;
case 5: /* ljmp Ev */
gen_op_ld_T1_A0[ot + s->mem_index]();
gen_op_addl_A0_im(1 << (ot - OT_WORD + 1));
gen_add_A0_im(s, 1 << (ot - OT_WORD + 1));
gen_op_ldu_T0_A0[OT_WORD + s->mem_index]();
do_ljmp:
if (s->pe && !s->vm86) {
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_jmp_im(pc_start - s->cs_base);
gen_op_ljmp_protected_T0_T1(s->pc - s->cs_base);
gen_op_ljmp_protected_T0_T1(s->pc - pc_start);
} else {
gen_op_movl_seg_T0_vm(offsetof(CPUX86State,segs[R_CS]));
gen_op_movl_T0_T1();
@ -4043,7 +4057,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
goto illegal_op;
gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
gen_op_ld_T1_A0[ot + s->mem_index]();
gen_op_addl_A0_im(1 << (ot - OT_WORD + 1));
gen_add_A0_im(s, 1 << (ot - OT_WORD + 1));
/* load the segment first to handle exceptions properly */
gen_op_ldu_T0_A0[OT_WORD + s->mem_index]();
gen_movl_seg_T0(s, op, pc_start - s->cs_base);
@ -5182,7 +5196,13 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_op_into(s->pc - pc_start);
break;
case 0xf1: /* icebp (undocumented, exits to external debugger) */
#if 1
gen_debug(s, pc_start - s->cs_base);
#else
/* start debug */
tb_flush(cpu_single_env);
cpu_set_log(CPU_LOG_INT | CPU_LOG_TB_IN_ASM);
#endif
break;
case 0xfa: /* cli */
if (!s->vm86) {
@ -5363,6 +5383,9 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
}
gen_jmp_im(pc_start - s->cs_base);
gen_op_sysret(s->dflag);
/* condition codes are modified only in long mode */
if (s->lma)
s->cc_op = CC_OP_EFLAGS;
gen_eob(s);
}
break;
@ -5458,12 +5481,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
else
gen_op_movl_T0_env(offsetof(CPUX86State,idt.limit));
gen_op_st_T0_A0[OT_WORD + s->mem_index]();
#ifdef TARGET_X86_64
if (CODE64(s))
gen_op_addq_A0_im(2);
else
#endif
gen_op_addl_A0_im(2);
gen_add_A0_im(s, 2);
if (op == 0)
gen_op_movtl_T0_env(offsetof(CPUX86State,gdt.base));
else
@ -5481,12 +5499,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
} else {
gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
gen_op_ld_T1_A0[OT_WORD + s->mem_index]();
#ifdef TARGET_X86_64
if (CODE64(s))
gen_op_addq_A0_im(2);
else
#endif
gen_op_addl_A0_im(2);
gen_add_A0_im(s, 2);
gen_op_ld_T0_A0[CODE64(s) + OT_LONG + s->mem_index]();
if (!s->dflag)
gen_op_andl_T0_im(0xffffff);