diff options
Diffstat (limited to 'target/sh4/translate.c')
| -rw-r--r-- | target/sh4/translate.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/target/sh4/translate.c b/target/sh4/translate.c index d61b176a7d..baed19bdac 100644 --- a/target/sh4/translate.c +++ b/target/sh4/translate.c @@ -1634,19 +1634,14 @@ static void _decode_opc(DisasContext * ctx) tcg_gen_shri_i32(REG(B11_8), REG(B11_8), 16); return; case 0x401b: /* tas.b @Rn */ - { - TCGv addr, val; - addr = tcg_temp_local_new(); - tcg_gen_mov_i32(addr, REG(B11_8)); - val = tcg_temp_local_new(); - tcg_gen_qemu_ld_i32(val, addr, ctx->memidx, MO_UB); + { + TCGv val = tcg_const_i32(0x80); + tcg_gen_atomic_fetch_or_i32(val, REG(B11_8), val, + ctx->memidx, MO_UB); tcg_gen_setcondi_i32(TCG_COND_EQ, cpu_sr_t, val, 0); - tcg_gen_ori_i32(val, val, 0x80); - tcg_gen_qemu_st_i32(val, addr, ctx->memidx, MO_UB); - tcg_temp_free(val); - tcg_temp_free(addr); - } - return; + tcg_temp_free(val); + } + return; case 0xf00d: /* fsts FPUL,FRn - FPSCR: Nothing */ CHECK_FPU_ENABLED tcg_gen_mov_i32(cpu_fregs[FREG(B11_8)], cpu_fpul); |