diff options
Diffstat (limited to 'target-i386/seg_helper.c')
| -rw-r--r-- | target-i386/seg_helper.c | 53 |
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) | |