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-rw-r--r--target-xtensa/translate.c24
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;