Revision b6d78bfa helper-i386.c
| b/helper-i386.c | ||
|---|---|---|
| 189 | 189 |
{
|
| 190 | 190 |
SegmentCache *dt; |
| 191 | 191 |
uint8_t *ptr, *ssp; |
| 192 |
int type, dpl, cpl, selector, ss_dpl;
|
|
| 192 |
int type, dpl, selector, ss_dpl; |
|
| 193 | 193 |
int has_error_code, new_stack, shift; |
| 194 | 194 |
uint32_t e1, e2, offset, ss, esp, ss_e1, ss_e2, push_size; |
| 195 | 195 |
uint32_t old_cs, old_ss, old_esp, old_eip; |
| ... | ... | |
| 216 | 216 |
break; |
| 217 | 217 |
} |
| 218 | 218 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3; |
| 219 |
if (env->eflags & VM_MASK) |
|
| 220 |
cpl = 3; |
|
| 221 |
else |
|
| 222 |
cpl = env->segs[R_CS].selector & 3; |
|
| 223 | 219 |
/* check privledge if software int */ |
| 224 |
if (is_int && dpl < cpl) |
|
| 220 |
if (is_int && dpl < env->cpl)
|
|
| 225 | 221 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
| 226 | 222 |
/* check valid bit */ |
| 227 | 223 |
if (!(e2 & DESC_P_MASK)) |
| ... | ... | |
| 236 | 232 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK))) |
| 237 | 233 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc); |
| 238 | 234 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3; |
| 239 |
if (dpl > cpl) |
|
| 235 |
if (dpl > env->cpl)
|
|
| 240 | 236 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc); |
| 241 | 237 |
if (!(e2 & DESC_P_MASK)) |
| 242 | 238 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc); |
| 243 |
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
|
| 239 |
if (!(e2 & DESC_C_MASK) && dpl < env->cpl) {
|
|
| 244 | 240 |
/* to inner priviledge */ |
| 245 | 241 |
get_ss_esp_from_tss(&ss, &esp, dpl); |
| 246 | 242 |
if ((ss & 0xfffc) == 0) |
| ... | ... | |
| 259 | 255 |
if (!(ss_e2 & DESC_P_MASK)) |
| 260 | 256 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc); |
| 261 | 257 |
new_stack = 1; |
| 262 |
} else if ((e2 & DESC_C_MASK) || dpl == cpl) {
|
|
| 258 |
} else if ((e2 & DESC_C_MASK) || dpl == env->cpl) {
|
|
| 263 | 259 |
/* to same priviledge */ |
| 264 | 260 |
new_stack = 0; |
| 265 | 261 |
} else {
|
| ... | ... | |
| 406 | 402 |
{
|
| 407 | 403 |
SegmentCache *dt; |
| 408 | 404 |
uint8_t *ptr; |
| 409 |
int dpl, cpl;
|
|
| 405 |
int dpl; |
|
| 410 | 406 |
uint32_t e2; |
| 411 | 407 |
|
| 412 | 408 |
dt = &env->idt; |
| ... | ... | |
| 414 | 410 |
e2 = ldl(ptr + 4); |
| 415 | 411 |
|
| 416 | 412 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3; |
| 417 |
cpl = 3; |
|
| 418 | 413 |
/* check privledge if software int */ |
| 419 |
if (is_int && dpl < cpl) |
|
| 414 |
if (is_int && dpl < env->cpl)
|
|
| 420 | 415 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
| 421 | 416 |
|
| 422 | 417 |
/* Since we emulate only user space, we cannot do more than |
| ... | ... | |
| 728 | 723 |
selector, (unsigned long)sc->base, sc->limit, sc->flags); |
| 729 | 724 |
#endif |
| 730 | 725 |
} |
| 726 |
if (seg_reg == R_CS) {
|
|
| 727 |
cpu_x86_set_cpl(env, selector & 3); |
|
| 728 |
} |
|
| 731 | 729 |
sc->selector = selector; |
| 732 | 730 |
} |
| 733 | 731 |
|
| ... | ... | |
| 744 | 742 |
raise_exception_err(EXCP0D_GPF, 0); |
| 745 | 743 |
if (load_segment(&e1, &e2, new_cs) != 0) |
| 746 | 744 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc); |
| 747 |
cpl = env->segs[R_CS].selector & 3;
|
|
| 745 |
cpl = env->cpl;
|
|
| 748 | 746 |
if (e2 & DESC_S_MASK) {
|
| 749 | 747 |
if (!(e2 & DESC_CS_MASK)) |
| 750 | 748 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc); |
| ... | ... | |
| 828 | 826 |
raise_exception_err(EXCP0D_GPF, 0); |
| 829 | 827 |
if (load_segment(&e1, &e2, new_cs) != 0) |
| 830 | 828 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc); |
| 831 |
cpl = env->segs[R_CS].selector & 3;
|
|
| 829 |
cpl = env->cpl;
|
|
| 832 | 830 |
if (e2 & DESC_S_MASK) {
|
| 833 | 831 |
if (!(e2 & DESC_CS_MASK)) |
| 834 | 832 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc); |
| ... | ... | |
| 1081 | 1079 |
if (!(e2 & DESC_S_MASK) || |
| 1082 | 1080 |
!(e2 & DESC_CS_MASK)) |
| 1083 | 1081 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc); |
| 1084 |
cpl = env->segs[R_CS].selector & 3;
|
|
| 1082 |
cpl = env->cpl;
|
|
| 1085 | 1083 |
rpl = new_cs & 3; |
| 1086 | 1084 |
if (rpl < cpl) |
| 1087 | 1085 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc); |
| ... | ... | |
| 1158 | 1156 |
/* modify processor state */ |
| 1159 | 1157 |
load_eflags(new_eflags, FL_UPDATE_CPL0_MASK | VM_MASK | VIF_MASK | VIP_MASK); |
| 1160 | 1158 |
load_seg_vm(R_CS, new_cs); |
| 1159 |
cpu_x86_set_cpl(env, 3); |
|
| 1161 | 1160 |
load_seg_vm(R_SS, new_ss); |
| 1162 | 1161 |
load_seg_vm(R_ES, new_es); |
| 1163 | 1162 |
load_seg_vm(R_DS, new_ds); |
| 1164 | 1163 |
load_seg_vm(R_FS, new_fs); |
| 1165 | 1164 |
load_seg_vm(R_GS, new_gs); |
| 1166 |
|
|
| 1165 |
|
|
| 1167 | 1166 |
env->eip = new_eip; |
| 1168 | 1167 |
env->regs[R_ESP] = new_esp; |
| 1169 | 1168 |
} |
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