[qemu-xen staging] target/arm: Fix decode of LDRA[AB] instructions

[patchbot@xxxxxxx]

commit d250bb19ced3b702c7c37731855f6876d0cc7995
Author:     Peter Collingbourne <pcc@xxxxxxxxxx>
AuthorDate: Mon Aug 3 17:28:49 2020 -0700
Commit:     Peter Maydell <peter.maydell@xxxxxxxxxx>
CommitDate: Tue Aug 4 16:40:19 2020 +0100

    target/arm: Fix decode of LDRA[AB] instructions
    
    These instructions use zero as the discriminator, not SP.
    
    Signed-off-by: Peter Collingbourne <pcc@xxxxxxxxxx>
    Message-id: 20200804002849.30268-1-pcc@xxxxxxxxxx
    Reviewed-by: Richard Henderson <richard.henderson@xxxxxxxxxx>
    Reviewed-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
    Signed-off-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
---
 target/arm/translate-a64.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index c98dfb17a8..534c3ff5f3 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -3429,9 +3429,11 @@ static void disas_ldst_pac(DisasContext *s, uint32_t 
insn,
 
     if (s->pauth_active) {
         if (use_key_a) {
-            gen_helper_autda(dirty_addr, cpu_env, dirty_addr, cpu_X[31]);
+            gen_helper_autda(dirty_addr, cpu_env, dirty_addr,
+                             new_tmp_a64_zero(s));
         } else {
-            gen_helper_autdb(dirty_addr, cpu_env, dirty_addr, cpu_X[31]);
+            gen_helper_autdb(dirty_addr, cpu_env, dirty_addr,
+                             new_tmp_a64_zero(s));
         }
     }
 
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#staging