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-rw-r--r--target-sh4/translate.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/target-sh4/translate.c b/target-sh4/translate.c
index 2403515c0b..9ea6b3ed43 100644
--- a/target-sh4/translate.c
+++ b/target-sh4/translate.c
@@ -1100,7 +1100,12 @@ void _decode_opc(DisasContext * ctx)
gen_op_shlr16_Rn(REG(B11_8));
return;
case 0x401b: /* tas.b @Rn */
- gen_op_tasb_rN(REG(B11_8));
+ gen_op_movl_rN_T0(REG(B11_8));
+ gen_op_movl_T0_T1();
+ gen_op_ldub_T0_T0(ctx);
+ gen_op_cmp_eq_imm_T0(0);
+ gen_op_or_imm_T0(0x80);
+ gen_op_stb_T0_T1(ctx);
return;
case 0xf00d: /* fsts FPUL,FRn - FPSCR: Nothing */
gen_op_movl_fpul_FT0();