diff options
Diffstat (limited to 'target-i386/helper.c')
| -rw-r--r-- | target-i386/helper.c | 71 |
1 files changed, 47 insertions, 24 deletions
diff --git a/target-i386/helper.c b/target-i386/helper.c index 320e09a758..b33d9cf1ee 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -21,6 +21,14 @@ //#define DEBUG_PCALL +#if 0 +#define raise_exception_err(a, b)\ +do {\ + printf("raise_exception line=%d\n", __LINE__);\ + (raise_exception_err)(a, b);\ +} while (0) +#endif + const uint8_t parity_table[256] = { CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, @@ -424,7 +432,7 @@ static void switch_tss(int tss_selector, possible exception */ env->eip = new_eip; eflags_mask = TF_MASK | AC_MASK | ID_MASK | - IF_MASK | IOPL_MASK | VM_MASK | RF_MASK; + IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK; if (!(type & 8)) eflags_mask &= 0xffff; load_eflags(new_eflags, eflags_mask); @@ -452,18 +460,20 @@ static void switch_tss(int tss_selector, if (new_ldt & 4) raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc); - dt = &env->gdt; - index = new_ldt & ~7; - if ((index + 7) > dt->limit) - raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc); - ptr = dt->base + index; - e1 = ldl_kernel(ptr); - e2 = ldl_kernel(ptr + 4); - if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2) - raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc); - if (!(e2 & DESC_P_MASK)) - raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc); - load_seg_cache_raw_dt(&env->ldt, e1, e2); + if ((new_ldt & 0xfffc) != 0) { + dt = &env->gdt; + index = new_ldt & ~7; + if ((index + 7) > dt->limit) + raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc); + ptr = dt->base + index; + e1 = ldl_kernel(ptr); + e2 = ldl_kernel(ptr + 4); + if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2) + raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc); + if (!(e2 & DESC_P_MASK)) + raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc); + load_seg_cache_raw_dt(&env->ldt, e1, e2); + } /* load the segments */ if (!(new_eflags & VM_MASK)) { @@ -748,6 +758,7 @@ static void do_interrupt_protected(int intno, int is_int, int error_code, if (env->eflags & VM_MASK) { /* XXX: explain me why W2K hangs if the whole segment cache is reset ? */ +#if 1 env->segs[R_ES].selector = 0; env->segs[R_ES].flags = 0; env->segs[R_DS].selector = 0; @@ -756,6 +767,12 @@ static void do_interrupt_protected(int intno, int is_int, int error_code, env->segs[R_FS].flags = 0; env->segs[R_GS].selector = 0; env->segs[R_GS].flags = 0; +#else + cpu_x86_load_seg_cache(env, R_ES, 0, NULL, 0, 0); + cpu_x86_load_seg_cache(env, R_DS, 0, NULL, 0, 0); + cpu_x86_load_seg_cache(env, R_FS, 0, NULL, 0, 0); + cpu_x86_load_seg_cache(env, R_GS, 0, NULL, 0, 0); +#endif } ss = (ss & ~3) | dpl; cpu_x86_load_seg_cache(env, R_SS, ss, @@ -853,13 +870,19 @@ void do_interrupt(int intno, int is_int, int error_code, { extern FILE *stdout; static int count; - if ((env->cr[0] && CR0_PE_MASK)) { - fprintf(stdout, "%d: interrupt: vector=%02x error_code=%04x int=%d CPL=%d CS:EIP=%04x:%08x SS:ESP=%04x:%08x EAX=%08x\n", + if (env->cr[0] & CR0_PE_MASK) { + fprintf(stdout, "%d: v=%02x e=%04x i=%d CPL=%d CS:EIP=%04x:%08x SS:ESP=%04x:%08x", count, intno, error_code, is_int, env->hflags & HF_CPL_MASK, env->segs[R_CS].selector, EIP, - env->segs[R_SS].selector, ESP, - EAX); + env->segs[R_SS].selector, ESP); + if (intno == 0x0e) { + fprintf(stdout, " CR2=%08x", env->cr[2]); + } else { + fprintf(stdout, " EAX=%08x", env->regs[R_EAX]); + } + fprintf(stdout, "\n"); + if (0) { cpu_x86_dump_state(env, stdout, X86_DUMP_CCOP); #if 0 @@ -879,7 +902,6 @@ void do_interrupt(int intno, int is_int, int error_code, } } #endif - #ifdef DEBUG_PCALL if (loglevel) { static int count; @@ -925,7 +947,8 @@ void raise_interrupt(int intno, int is_int, int error_code, } /* shortcuts to generate exceptions */ -void raise_exception_err(int exception_index, int error_code) + +void (raise_exception_err)(int exception_index, int error_code) { raise_interrupt(exception_index, 0, error_code, 0); } @@ -1409,7 +1432,7 @@ void helper_lcall_protected_T0_T1(int shift, int next_eip) if (dpl < cpl || dpl < rpl) raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc); switch_tss(new_cs, e1, e2, SWITCH_TSS_CALL); - break; + return; case 4: /* 286 call gate */ case 12: /* 386 call gate */ break; @@ -1551,9 +1574,9 @@ void helper_iret_real(int shift) load_seg_vm(R_CS, new_cs); env->eip = new_eip; if (env->eflags & VM_MASK) - eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | RF_MASK; + eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | RF_MASK | NT_MASK; else - eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | IOPL_MASK | RF_MASK; + eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | IOPL_MASK | RF_MASK | NT_MASK; if (shift == 0) eflags_mask &= 0xffff; load_eflags(new_eflags, eflags_mask); @@ -1688,7 +1711,7 @@ static inline void helper_ret_protected(int shift, int is_iret, int addend) env->eip = new_eip; if (is_iret) { /* NOTE: 'cpl' is the _old_ CPL */ - eflags_mask = TF_MASK | AC_MASK | ID_MASK | RF_MASK; + eflags_mask = TF_MASK | AC_MASK | ID_MASK | RF_MASK | NT_MASK; if (cpl == 0) eflags_mask |= IOPL_MASK; iopl = (env->eflags >> IOPL_SHIFT) & 3; @@ -1710,7 +1733,7 @@ static inline void helper_ret_protected(int shift, int is_iret, int addend) /* modify processor state */ load_eflags(new_eflags, TF_MASK | AC_MASK | ID_MASK | - IF_MASK | IOPL_MASK | VM_MASK | VIF_MASK | VIP_MASK); + IF_MASK | IOPL_MASK | VM_MASK | NT_MASK | VIF_MASK | VIP_MASK); load_seg_vm(R_CS, new_cs & 0xffff); cpu_x86_set_cpl(env, 3); load_seg_vm(R_SS, new_ss & 0xffff); |