diff options
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/translate.c | 50 |
1 files changed, 38 insertions, 12 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c index 3ab09a3280..b09f1b7a4c 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -1747,6 +1747,9 @@ static void gen_eob(DisasContext *s) { if (s->cc_op != CC_OP_DYNAMIC) gen_op_set_cc_op(s->cc_op); + if (s->tb->flags & HF_INHIBIT_IRQ_MASK) { + gen_op_reset_inhibit_irq(); + } if (s->singlestep_enabled) { gen_op_debug(); } else if (s->tf) { @@ -2385,8 +2388,11 @@ static uint8_t *disas_insn(DisasContext *s, uint8_t *pc_start) gen_movl_seg_T0(s, reg, pc_start - s->cs_base); gen_pop_update(s); if (reg == R_SS) { - /* if reg == SS, inhibit interrupts/trace */ - gen_op_set_inhibit_irq(); + /* if reg == SS, inhibit interrupts/trace. */ + /* If several instructions disable interrupts, only the + _first_ does it */ + if (!(s->tb->flags & HF_INHIBIT_IRQ_MASK)) + gen_op_set_inhibit_irq(); s->tf = 0; } if (s->is_jmp) { @@ -2457,7 +2463,10 @@ static uint8_t *disas_insn(DisasContext *s, uint8_t *pc_start) gen_movl_seg_T0(s, reg, pc_start - s->cs_base); if (reg == R_SS) { /* if reg == SS, inhibit interrupts/trace */ - gen_op_set_inhibit_irq(); + /* If several instructions disable interrupts, only the + _first_ does it */ + if (!(s->tb->flags & HF_INHIBIT_IRQ_MASK)) + gen_op_set_inhibit_irq(); s->tf = 0; } if (s->is_jmp) { @@ -3176,6 +3185,21 @@ static uint8_t *disas_insn(DisasContext *s, uint8_t *pc_start) gen_op_fpop(); s->cc_op = CC_OP_EFLAGS; break; + case 0x10 ... 0x13: /* fcmovxx */ + case 0x18 ... 0x1b: + { + int op1; + const static uint8_t fcmov_cc[8] = { + (JCC_B << 1), + (JCC_Z << 1), + (JCC_BE << 1), + (JCC_P << 1), + }; + op1 = fcmov_cc[op & 3] | ((op >> 3) & 1); + gen_setcc(s, op1); + gen_op_fcmov_ST0_STN_T0(opreg); + } + break; default: goto illegal_op; } @@ -3730,7 +3754,10 @@ static uint8_t *disas_insn(DisasContext *s, uint8_t *pc_start) gen_sti: gen_op_sti(); /* interruptions are enabled only the first insn after sti */ - gen_op_set_inhibit_irq(); + /* If several instructions disable interrupts, only the + _first_ does it */ + if (!(s->tb->flags & HF_INHIBIT_IRQ_MASK)) + gen_op_set_inhibit_irq(); /* give a chance to handle pending irqs */ gen_op_jmp_im(s->pc - s->cs_base); gen_eob(s); @@ -4459,7 +4486,8 @@ static inline int gen_intermediate_code_internal(CPUState *env, else dc->mem_index = 3; } - dc->jmp_opt = !(dc->tf || env->singlestep_enabled + dc->jmp_opt = !(dc->tf || env->singlestep_enabled || + (flags & HF_INHIBIT_IRQ_MASK) #ifndef CONFIG_SOFTMMU || (flags & HF_SOFTMMU_MASK) #endif @@ -4472,12 +4500,6 @@ static inline int gen_intermediate_code_internal(CPUState *env, pc_ptr = pc_start; lj = -1; - /* if irq were inhibited for the next instruction, we can disable - them here as it is simpler (otherwise jumps would have to - handled as special case) */ - if (flags & HF_INHIBIT_IRQ_MASK) { - gen_op_reset_inhibit_irq(); - } for(;;) { if (env->nb_breakpoints > 0) { for(j = 0; j < env->nb_breakpoints; j++) { @@ -4504,7 +4526,11 @@ static inline int gen_intermediate_code_internal(CPUState *env, break; /* if single step mode, we generate only one instruction and generate an exception */ - if (dc->tf || dc->singlestep_enabled) { + /* if irq were inhibited with HF_INHIBIT_IRQ_MASK, we clear + the flag and abort the translation to give the irqs a + change to be happen */ + if (dc->tf || dc->singlestep_enabled || + (flags & HF_INHIBIT_IRQ_MASK)) { gen_op_jmp_im(pc_ptr - dc->cs_base); gen_eob(dc); break; |