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Diffstat (limited to 'target-i386/seg_helper.c')
-rw-r--r--target-i386/seg_helper.c53
1 files changed, 19 insertions, 34 deletions
diff --git a/target-i386/seg_helper.c b/target-i386/seg_helper.c
index 8c3f92c22b..3cf862ee60 100644
--- a/target-i386/seg_helper.c
+++ b/target-i386/seg_helper.c
@@ -409,11 +409,7 @@ static void switch_tss(CPUX86State *env, int tss_selector,
for (i = 0; i < 6; i++) {
load_seg_vm(env, i, new_segs[i]);
}
- /* in vm86, CPL is always 3 */
- cpu_x86_set_cpl(env, 3);
} else {
- /* CPL is set the RPL of CS */
- cpu_x86_set_cpl(env, new_segs[R_CS] & 3);
/* first just selectors as the rest may trigger exceptions */
for (i = 0; i < 6; i++) {
cpu_x86_load_seg_cache(env, i, new_segs[i], 0, 0, 0);
@@ -739,6 +735,12 @@ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int,
}
}
+ /* interrupt gate clear IF mask */
+ if ((type & 1) == 0) {
+ env->eflags &= ~IF_MASK;
+ }
+ env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK);
+
if (new_stack) {
if (env->eflags & VM_MASK) {
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0, 0);
@@ -757,14 +759,7 @@ static void do_interrupt_protected(CPUX86State *env, int intno, int is_int,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
- cpu_x86_set_cpl(env, dpl);
env->eip = offset;
-
- /* interrupt gate clear IF mask */
- if ((type & 1) == 0) {
- env->eflags &= ~IF_MASK;
- }
- env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK);
}
#ifdef TARGET_X86_64
@@ -911,6 +906,12 @@ static void do_interrupt64(CPUX86State *env, int intno, int is_int,
PUSHQ(esp, error_code);
}
+ /* interrupt gate clear IF mask */
+ if ((type & 1) == 0) {
+ env->eflags &= ~IF_MASK;
+ }
+ env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK);
+
if (new_stack) {
ss = 0 | dpl;
cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, 0);
@@ -922,14 +923,7 @@ static void do_interrupt64(CPUX86State *env, int intno, int is_int,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
- cpu_x86_set_cpl(env, dpl);
env->eip = offset;
-
- /* interrupt gate clear IF mask */
- if ((type & 1) == 0) {
- env->eflags &= ~IF_MASK;
- }
- env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK);
}
#endif
@@ -960,7 +954,8 @@ void helper_syscall(CPUX86State *env, int next_eip_addend)
code64 = env->hflags & HF_CS64_MASK;
- cpu_x86_set_cpl(env, 0);
+ env->eflags &= ~env->fmask;
+ cpu_load_eflags(env, env->eflags, 0);
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
0, 0xffffffff,
DESC_G_MASK | DESC_P_MASK |
@@ -972,8 +967,6 @@ void helper_syscall(CPUX86State *env, int next_eip_addend)
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
DESC_W_MASK | DESC_A_MASK);
- env->eflags &= ~env->fmask;
- cpu_load_eflags(env, env->eflags, 0);
if (code64) {
env->eip = env->lstar;
} else {
@@ -982,7 +975,7 @@ void helper_syscall(CPUX86State *env, int next_eip_addend)
} else {
env->regs[R_ECX] = (uint32_t)(env->eip + next_eip_addend);
- cpu_x86_set_cpl(env, 0);
+ env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK);
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
@@ -993,7 +986,6 @@ void helper_syscall(CPUX86State *env, int next_eip_addend)
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK |
DESC_W_MASK | DESC_A_MASK);
- env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK);
env->eip = (uint32_t)env->star;
}
}
@@ -1014,6 +1006,9 @@ void helper_sysret(CPUX86State *env, int dflag)
}
selector = (env->star >> 48) & 0xffff;
if (env->hflags & HF_LMA_MASK) {
+ cpu_load_eflags(env, (uint32_t)(env->regs[11]), TF_MASK | AC_MASK
+ | ID_MASK | IF_MASK | IOPL_MASK | VM_MASK | RF_MASK |
+ NT_MASK);
if (dflag == 2) {
cpu_x86_load_seg_cache(env, R_CS, (selector + 16) | 3,
0, 0xffffffff,
@@ -1035,11 +1030,8 @@ void helper_sysret(CPUX86State *env, int dflag)
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
DESC_W_MASK | DESC_A_MASK);
- cpu_load_eflags(env, (uint32_t)(env->regs[11]), TF_MASK | AC_MASK
- | ID_MASK | IF_MASK | IOPL_MASK | VM_MASK | RF_MASK |
- NT_MASK);
- cpu_x86_set_cpl(env, 3);
} else {
+ env->eflags |= IF_MASK;
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
0, 0xffffffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
@@ -1051,8 +1043,6 @@ void helper_sysret(CPUX86State *env, int dflag)
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
DESC_W_MASK | DESC_A_MASK);
- env->eflags |= IF_MASK;
- cpu_x86_set_cpl(env, 3);
}
}
#endif
@@ -1905,7 +1895,6 @@ void helper_lcall_protected(CPUX86State *env, int new_cs, target_ulong new_eip,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
- cpu_x86_set_cpl(env, dpl);
SET_ESP(sp, sp_mask);
env->eip = offset;
}
@@ -2134,7 +2123,6 @@ static inline void helper_ret_protected(CPUX86State *env, int shift,
get_seg_base(e1, e2),
get_seg_limit(e1, e2),
e2);
- cpu_x86_set_cpl(env, rpl);
sp = new_esp;
#ifdef TARGET_X86_64
if (env->hflags & HF_CS64_MASK) {
@@ -2185,7 +2173,6 @@ static inline void helper_ret_protected(CPUX86State *env, int shift,
IF_MASK | IOPL_MASK | VM_MASK | NT_MASK | VIF_MASK |
VIP_MASK);
load_seg_vm(env, R_CS, new_cs & 0xffff);
- cpu_x86_set_cpl(env, 3);
load_seg_vm(env, R_SS, new_ss & 0xffff);
load_seg_vm(env, R_ES, new_es & 0xffff);
load_seg_vm(env, R_DS, new_ds & 0xffff);
@@ -2238,7 +2225,6 @@ void helper_sysenter(CPUX86State *env)
raise_exception_err(env, EXCP0D_GPF, 0);
}
env->eflags &= ~(VM_MASK | IF_MASK | RF_MASK);
- cpu_x86_set_cpl(env, 0);
#ifdef TARGET_X86_64
if (env->hflags & HF_LMA_MASK) {
@@ -2274,7 +2260,6 @@ void helper_sysexit(CPUX86State *env, int dflag)
if (env->sysenter_cs == 0 || cpl != 0) {
raise_exception_err(env, EXCP0D_GPF, 0);
}
- cpu_x86_set_cpl(env, 3);
#ifdef TARGET_X86_64
if (dflag == 2) {
cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 32) & 0xfffc) |
generated by cgit v1.2.3 (git 2.26.2) at 2025-01-17 12:41:17 +0000