diff options
| -rw-r--r-- | target/i386/translate.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/target/i386/translate.c b/target/i386/translate.c index 5fdadf9..26e8002 100644 --- a/target/i386/translate.c +++ b/target/i386/translate.c @@ -31,6 +31,7 @@ #include "trace-tcg.h" #include "exec/log.h" +#define DISAS_TOO_MANY 5 #define PREFIX_REPZ 0x01 #define PREFIX_REPNZ 0x02 @@ -2153,6 +2154,7 @@ static inline void gen_goto_tb(DisasContext *s, int tb_num, target_ulong eip) tcg_gen_goto_tb(tb_num); gen_jmp_im(eip); tcg_gen_exit_tb((uintptr_t)s->tb + tb_num); + s->is_jmp = DISAS_NORETURN; } else { /* jump to another page */ gen_jmp_im(eip); @@ -2173,7 +2175,6 @@ static inline void gen_jcc(DisasContext *s, int b, gen_set_label(l1); gen_goto_tb(s, 1, val); - s->is_jmp = DISAS_TB_JUMP; } else { l1 = gen_new_label(); l2 = gen_new_label(); @@ -2243,12 +2244,14 @@ static void gen_movl_seg_T0(DisasContext *s, int seg_reg) because ss32 may change. For R_SS, translation must always stop as a special handling must be done to disable hardware interrupts for the next instruction */ - if (seg_reg == R_SS || (s->code32 && seg_reg < R_FS)) - s->is_jmp = DISAS_TB_JUMP; + if (seg_reg == R_SS || (s->code32 && seg_reg < R_FS)) { + s->is_jmp = DISAS_TOO_MANY; + } } else { gen_op_movl_seg_T0_vm(seg_reg); - if (seg_reg == R_SS) - s->is_jmp = DISAS_TB_JUMP; + if (seg_reg == R_SS) { + s->is_jmp = DISAS_TOO_MANY; + } } } @@ -2420,7 +2423,7 @@ static void gen_exception(DisasContext *s, int trapno, target_ulong cur_eip) gen_update_cc_op(s); gen_jmp_im(cur_eip); gen_helper_raise_exception(cpu_env, tcg_const_i32(trapno)); - s->is_jmp = DISAS_TB_JUMP; + s->is_jmp = DISAS_NORETURN; } /* Generate #UD for the current instruction. The assumption here is that @@ -2458,7 +2461,7 @@ static void gen_interrupt(DisasContext *s, int intno, gen_jmp_im(cur_eip); gen_helper_raise_interrupt(cpu_env, tcg_const_i32(intno), tcg_const_i32(next_eip - cur_eip)); - s->is_jmp = DISAS_TB_JUMP; + s->is_jmp = DISAS_NORETURN; } static void gen_debug(DisasContext *s, target_ulong cur_eip) @@ -2466,7 +2469,7 @@ static void gen_debug(DisasContext *s, target_ulong cur_eip) gen_update_cc_op(s); gen_jmp_im(cur_eip); gen_helper_debug(cpu_env); - s->is_jmp = DISAS_TB_JUMP; + s->is_jmp = DISAS_NORETURN; } static void gen_set_hflag(DisasContext *s, uint32_t mask) @@ -2541,7 +2544,7 @@ do_gen_eob_worker(DisasContext *s, bool inhibit, bool recheck_tf, TCGv jr) } else { tcg_gen_exit_tb(0); } - s->is_jmp = DISAS_TB_JUMP; + s->is_jmp = DISAS_NORETURN; } static inline void @@ -2580,7 +2583,6 @@ static void gen_jmp_tb(DisasContext *s, target_ulong eip, int tb_num) set_cc_op(s, CC_OP_DYNAMIC); if (s->jmp_opt) { gen_goto_tb(s, tb_num, eip); - s->is_jmp = DISAS_TB_JUMP; } else { gen_jmp_im(eip); gen_eob(s); @@ -6943,7 +6945,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_update_cc_op(s); gen_jmp_im(pc_start - s->cs_base); gen_helper_pause(cpu_env, tcg_const_i32(s->pc - pc_start)); - s->is_jmp = DISAS_TB_JUMP; + s->is_jmp = DISAS_NORETURN; } break; case 0x9b: /* fwait */ @@ -7188,7 +7190,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_update_cc_op(s); gen_jmp_im(pc_start - s->cs_base); gen_helper_hlt(cpu_env, tcg_const_i32(s->pc - pc_start)); - s->is_jmp = DISAS_TB_JUMP; + s->is_jmp = DISAS_NORETURN; } break; case 0x100: @@ -7371,7 +7373,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_helper_vmrun(cpu_env, tcg_const_i32(s->aflag - 1), tcg_const_i32(s->pc - pc_start)); tcg_gen_exit_tb(0); - s->is_jmp = DISAS_TB_JUMP; + s->is_jmp = DISAS_NORETURN; break; case 0xd9: /* VMMCALL */ |