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-rw-r--r--target/arm/translate.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 3ad8b4031c..ba6ab7d287 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -10774,7 +10774,19 @@ static void disas_thumb2_insn(DisasContext *s, uint32_t insn)
default_exception_el(s));
break;
}
- if (((insn >> 24) & 3) == 3) {
+ if ((insn & 0xfe000a00) == 0xfc000800
+ && arm_dc_feature(s, ARM_FEATURE_V8)) {
+ /* The Thumb2 and ARM encodings are identical. */
+ if (disas_neon_insn_3same_ext(s, insn)) {
+ goto illegal_op;
+ }
+ } else if ((insn & 0xff000a00) == 0xfe000800
+ && arm_dc_feature(s, ARM_FEATURE_V8)) {
+ /* The Thumb2 and ARM encodings are identical. */
+ if (disas_neon_insn_2reg_scalar_ext(s, insn)) {
+ goto illegal_op;
+ }
+ } else if (((insn >> 24) & 3) == 3) {
/* Translate into the equivalent ARM encoding. */
insn = (insn & 0xe2ffffff) | ((insn & (1 << 28)) >> 4) | (1 << 28);
if (disas_neon_data_insn(s, insn)) {