diff options
Diffstat (limited to 'target-microblaze/translate.c')
| -rw-r--r-- | target-microblaze/translate.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/target-microblaze/translate.c b/target-microblaze/translate.c index 1ada15e..c018c99 100644 --- a/target-microblaze/translate.c +++ b/target-microblaze/translate.c @@ -752,9 +752,8 @@ static void dec_bit(DisasContext *dc) static inline void sync_jmpstate(DisasContext *dc) { if (dc->jmp == JMP_DIRECT) { - dc->jmp = JMP_INDIRECT; - tcg_gen_movi_tl(env_btaken, 1); - tcg_gen_movi_tl(env_btarget, dc->jmp_pc); + dc->jmp = JMP_INDIRECT; + tcg_gen_movi_tl(env_btarget, dc->jmp_pc); } } @@ -976,11 +975,13 @@ static void dec_bcc(DisasContext *dc) int32_t offset = (int32_t)((int16_t)dc->imm); /* sign-extend. */ tcg_gen_movi_tl(env_btarget, dc->pc + offset); + dc->jmp = JMP_DIRECT; + dc->jmp_pc = dc->pc + offset; } else { + dc->jmp = JMP_INDIRECT; tcg_gen_movi_tl(env_btarget, dc->pc); tcg_gen_add_tl(env_btarget, env_btarget, *(dec_alu_op_b(dc))); } - dc->jmp = JMP_INDIRECT; eval_cc(dc, cc, env_btaken, cpu_R[dc->ra], tcg_const_tl(0)); } @@ -1028,6 +1029,7 @@ static void dec_br(DisasContext *dc) if (dec_alu_op_b_is_small_imm(dc)) { dc->jmp = JMP_DIRECT; dc->jmp_pc = dc->pc + (int32_t)((int16_t)dc->imm); + tcg_gen_movi_tl(env_btaken, 1); } else { tcg_gen_movi_tl(env_btaken, 1); tcg_gen_movi_tl(env_btarget, dc->pc); @@ -1130,6 +1132,7 @@ static void dec_rts(DisasContext *dc) } else LOG_DIS("rts ir=%x\n", dc->ir); + dc->jmp = JMP_INDIRECT; tcg_gen_movi_tl(env_btaken, 1); tcg_gen_add_tl(env_btarget, cpu_R[dc->ra], *(dec_alu_op_b(dc))); } @@ -1370,6 +1373,9 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, dc->is_jmp = DISAS_NEXT; dc->jmp = 0; dc->delayed_branch = !!(dc->tb_flags & D_FLAG); + if (dc->delayed_branch) { + dc->jmp = JMP_INDIRECT; + } dc->pc = pc_start; dc->singlestep_enabled = env->singlestep_enabled; dc->cpustate_changed = 0; @@ -1441,9 +1447,21 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, /* Clear the delay slot flag. */ dc->tb_flags &= ~D_FLAG; /* If it is a direct jump, try direct chaining. */ - if (dc->jmp != JMP_DIRECT) { + if (dc->jmp == JMP_INDIRECT) { eval_cond_jmp(dc, env_btarget, tcg_const_tl(dc->pc)); dc->is_jmp = DISAS_JUMP; + } else if (dc->jmp == JMP_DIRECT) { + int l1; + + t_sync_flags(dc); + l1 = gen_new_label(); + /* Conditional jmp. */ + tcg_gen_brcondi_tl(TCG_COND_NE, env_btaken, 0, l1); + gen_goto_tb(dc, 1, dc->pc); + gen_set_label(l1); + gen_goto_tb(dc, 0, dc->jmp_pc); + + dc->is_jmp = DISAS_TB_JUMP; } break; } |