diff options
Diffstat (limited to 'target-i386/translate.c')
| -rw-r--r-- | target-i386/translate.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c index 4d89ccbba9..43d3bbcbb8 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -60,6 +60,7 @@ typedef struct DisasContext { int cpl; int iopl; int tf; /* TF cpu flag */ + int singlestep_enabled; /* "hardware" single step enabled */ int jmp_opt; /* use direct block chaining for direct jumps */ int mem_index; /* select memory access functions */ struct TranslationBlock *tb; @@ -1712,7 +1713,9 @@ static void gen_eob(DisasContext *s) { if (s->cc_op != CC_OP_DYNAMIC) gen_op_set_cc_op(s->cc_op); - if (s->tf) { + if (s->singlestep_enabled) { + gen_op_debug(); + } else if (s->tf) { gen_op_raise_exception(EXCP01_SSTP); } else { gen_op_movl_T0_0(); @@ -4368,6 +4371,7 @@ static inline int gen_intermediate_code_internal(CPUState *env, dc->cpl = (flags >> HF_CPL_SHIFT) & 3; dc->iopl = (flags >> IOPL_SHIFT) & 3; dc->tf = (flags >> TF_SHIFT) & 1; + dc->singlestep_enabled = env->singlestep_enabled; dc->cc_op = CC_OP_DYNAMIC; dc->cs_base = cs_base; dc->tb = tb; @@ -4425,7 +4429,7 @@ 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) { + if (dc->tf || dc->singlestep_enabled) { gen_op_jmp_im(pc_ptr - dc->cs_base); gen_eob(dc); break; |