diff options
Diffstat (limited to 'target-sh4/translate.c')
| -rw-r--r-- | target-sh4/translate.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/target-sh4/translate.c b/target-sh4/translate.c index 743d76a575..35573be5ff 100644 --- a/target-sh4/translate.c +++ b/target-sh4/translate.c @@ -952,7 +952,21 @@ static void _decode_opc(DisasContext * ctx) tcg_gen_neg_i32(REG(B11_8), REG(B7_4)); return; case 0x600a: /* negc Rm,Rn */ - gen_helper_negc(REG(B11_8), REG(B7_4)); + { + TCGv t0, t1; + t0 = tcg_temp_new(); + tcg_gen_neg_i32(t0, REG(B7_4)); + t1 = tcg_temp_new(); + tcg_gen_andi_i32(t1, cpu_sr, SR_T); + tcg_gen_sub_i32(REG(B11_8), t0, t1); + tcg_gen_andi_i32(cpu_sr, cpu_sr, ~SR_T); + tcg_gen_setcond_i32(TCG_COND_GE, t1, REG(B11_8), t0); + tcg_gen_or_i32(cpu_sr, cpu_sr, t1); + tcg_gen_setcondi_i32(TCG_COND_GE, t1, t0, 0); + tcg_gen_or_i32(cpu_sr, cpu_sr, t1); + tcg_temp_free(t0); + tcg_temp_free(t1); + } return; case 0x6007: /* not Rm,Rn */ tcg_gen_not_i32(REG(B11_8), REG(B7_4)); |