[PATCH v4 13/60] target/arm: Trap direct acceses to FPMR

[Richard Henderson]

Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
 target/arm/tcg/translate-a64.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index b013dd51cb..d2a4b0fadc 100644
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -2899,6 +2899,10 @@ static void handle_sys(DisasContext *s, bool isread,
     }
 
     if (!skip_fp_access_checks) {
+        if ((ri->type & ARM_CP_FPMR) && s->fpmr_el != 0) {
+            gen_exception_insn_el(s, 0, EXCP_UDEF, syndrome, s->fpmr_el);
+            return;
+        }
         if ((ri->type & ARM_CP_FPU) && !fp_access_check_only(s)) {
             return;
         } else if ((ri->type & ARM_CP_SVE) && !sve_access_check(s)) {
-- 
2.43.0