diff options
Diffstat (limited to 'target-sh4')
| -rw-r--r-- | target-sh4/helper.h | 1 | ||||
| -rw-r--r-- | target-sh4/op_helper.c | 15 | ||||
| -rw-r--r-- | target-sh4/translate.c | 16 |
3 files changed, 15 insertions, 17 deletions
diff --git a/target-sh4/helper.h b/target-sh4/helper.h index 4e595c8..2e52768 100644 --- a/target-sh4/helper.h +++ b/target-sh4/helper.h @@ -17,7 +17,6 @@ DEF_HELPER_2(addv, i32, i32, i32) DEF_HELPER_2(addc, i32, i32, i32) DEF_HELPER_2(subv, i32, i32, i32) DEF_HELPER_2(subc, i32, i32, i32) -DEF_HELPER_1(negc, i32, i32) DEF_HELPER_2(div1, i32, i32, i32) DEF_HELPER_2(macl, void, i32, i32) DEF_HELPER_2(macw, void, i32, i32) diff --git a/target-sh4/op_helper.c b/target-sh4/op_helper.c index 9d7652f..30f9842 100644 --- a/target-sh4/op_helper.c +++ b/target-sh4/op_helper.c @@ -379,21 +379,6 @@ void helper_macw(uint32_t arg0, uint32_t arg1) } } -uint32_t helper_negc(uint32_t arg) -{ - uint32_t temp; - - temp = -arg; - arg = temp - (env->sr & SR_T); - if (0 < temp) - env->sr |= SR_T; - else - env->sr &= ~SR_T; - if (temp < arg) - env->sr |= SR_T; - return arg; -} - uint32_t helper_subc(uint32_t arg0, uint32_t arg1) { uint32_t tmp0, tmp1; diff --git a/target-sh4/translate.c b/target-sh4/translate.c index 743d76a..35573be 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)); |