diff options
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/translate.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c index f8d5e68742..948a04831a 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -1169,14 +1169,34 @@ static inline void gen_compute_eflags_c(DisasContext *s, TCGv reg) /* generate a conditional jump to label 'l1' according to jump opcode value 'b'. In the fast case, T0 is guaranted not to be used. */ +static inline void gen_jcc1_noeob(DisasContext *s, int b, int l1) +{ + CCPrepare cc = gen_prepare_cc(s, b, cpu_T[0]); + + if (cc.mask != -1) { + tcg_gen_andi_tl(cpu_T[0], cc.reg, cc.mask); + cc.reg = cpu_T[0]; + } + if (cc.use_reg2) { + tcg_gen_brcond_tl(cc.cond, cc.reg, cc.reg2, l1); + } else { + tcg_gen_brcondi_tl(cc.cond, cc.reg, cc.imm, l1); + } +} + +/* Generate a conditional jump to label 'l1' according to jump opcode + value 'b'. In the fast case, T0 is guaranted not to be used. + A translation block must end soon. */ static inline void gen_jcc1(DisasContext *s, int b, int l1) { CCPrepare cc = gen_prepare_cc(s, b, cpu_T[0]); + gen_update_cc_op(s); if (cc.mask != -1) { tcg_gen_andi_tl(cpu_T[0], cc.reg, cc.mask); cc.reg = cpu_T[0]; } + set_cc_op(s, CC_OP_DYNAMIC); if (cc.use_reg2) { tcg_gen_brcond_tl(cc.cond, cc.reg, cc.reg2, l1); } else { @@ -1310,7 +1330,6 @@ static inline void gen_repz_ ## op(DisasContext *s, int ot, \ if (!s->jmp_opt) \ gen_op_jz_ecx(s->aflag, l2); \ gen_jmp(s, cur_eip); \ - set_cc_op(s, CC_OP_DYNAMIC); \ } GEN_REPZ(movs) @@ -2379,11 +2398,9 @@ static inline void gen_jcc(DisasContext *s, int b, int l1, l2; if (s->jmp_opt) { - gen_update_cc_op(s); l1 = gen_new_label(); gen_jcc1(s, b, l1); - set_cc_op(s, CC_OP_DYNAMIC); - + gen_goto_tb(s, 0, next_eip); gen_set_label(l1); @@ -6077,7 +6094,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, }; op1 = fcmov_cc[op & 3] | (((op >> 3) & 1) ^ 1); l1 = gen_new_label(); - gen_jcc1(s, op1, l1); + gen_jcc1_noeob(s, op1, l1); gen_helper_fmov_ST0_STN(cpu_env, tcg_const_i32(opreg)); gen_set_label(l1); } |