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[Qemu-devel] [PULL 44/47] target/arm: fix decoding of B{, L}RA{A, B}


From: Peter Maydell
Subject: [Qemu-devel] [PULL 44/47] target/arm: fix decoding of B{, L}RA{A, B}
Date: Fri, 1 Feb 2019 16:06:50 +0000

From: Remi Denis-Courmont <address@hidden>

A flawed test lead to the instructions always being treated as
unallocated encodings.

Fixes: https://bugs.launchpad.net/bugs/1813460
Signed-off-by: Remi Denis-Courmont <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: Peter Maydell <address@hidden>
---
 target/arm/translate-a64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index b864ac7a69f..a1997e3ae28 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -2036,7 +2036,7 @@ static void disas_uncond_b_reg(DisasContext *s, uint32_t 
insn)
         if (!dc_isar_feature(aa64_pauth, s)) {
             goto do_unallocated;
         }
-        if (op3 != 2 || op3 != 3) {
+        if ((op3 & ~1) != 2) {
             goto do_unallocated;
         }
         if (s->pauth_active) {
-- 
2.20.1




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