diff options
| -rw-r--r-- | target-xtensa/translate.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c index 1900bd5d44..7a1c528fc8 100644 --- a/target-xtensa/translate.c +++ b/target-xtensa/translate.c @@ -1778,12 +1778,30 @@ static void disas_xtensa_insn(DisasContext *dc) case 5: gen_window_check2(dc, RRR_R, RRR_T); { - int shiftimm = RRR_S | (OP1 << 4); + int shiftimm = RRR_S | ((OP1 & 1) << 4); int maskimm = (1 << (OP2 + 1)) - 1; TCGv_i32 tmp = tcg_temp_new_i32(); - tcg_gen_shri_i32(tmp, cpu_R[RRR_T], shiftimm); - tcg_gen_andi_i32(cpu_R[RRR_R], tmp, maskimm); + + if (shiftimm) { + tcg_gen_shri_i32(tmp, cpu_R[RRR_T], shiftimm); + } else { + tcg_gen_mov_i32(tmp, cpu_R[RRR_T]); + } + + switch (maskimm) { + case 0xff: + tcg_gen_ext8u_i32(cpu_R[RRR_R], tmp); + break; + + case 0xffff: + tcg_gen_ext16u_i32(cpu_R[RRR_R], tmp); + break; + + default: + tcg_gen_andi_i32(cpu_R[RRR_R], tmp, maskimm); + break; + } tcg_temp_free(tmp); } break; |