diff options
| -rw-r--r-- | target/arm/translate.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/target/arm/translate.c b/target/arm/translate.c index 1f3c7bbd54..b67e7389d3 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -9997,6 +9997,15 @@ static bool do_ldm(DisasContext *s, arg_ldst_block *a) static bool trans_LDM_a32(DisasContext *s, arg_ldst_block *a) { + /* + * Writeback register in register list is UNPREDICTABLE + * for ArchVersion() >= 7. Prior to v7, A32 would write + * an UNKNOWN value to the base register. + */ + if (ENABLE_ARCH_7 && a->w && (a->list & (1 << a->rn))) { + unallocated_encoding(s); + return true; + } return do_ldm(s, a); } |