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[Qemu-devel] [PATCH v2 12/14] target-arm: Fix bit test in sp_el0_access


From: Eric Blake
Subject: [Qemu-devel] [PATCH v2 12/14] target-arm: Fix bit test in sp_el0_access
Date: Tue, 5 Aug 2014 16:41:12 -0600

From: Stefan Weil <address@hidden>

Static code analyzers complain about a dubious & operation used for a
boolean value. The code does not test the PSTATE_SP bit as it should.

Cc: Peter Maydell <address@hidden>
Signed-off-by: Stefan Weil <address@hidden>
Message-id: address@hidden
Signed-off-by: Peter Maydell <address@hidden>
---
 target-arm/helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target-arm/helper.c b/target-arm/helper.c
index a7f82f3..d709285 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -1853,7 +1853,7 @@ static uint64_t aa64_dczid_read(CPUARMState *env, const 
ARMCPRegInfo *ri)

 static CPAccessResult sp_el0_access(CPUARMState *env, const ARMCPRegInfo *ri)
 {
-    if (!env->pstate & PSTATE_SP) {
+    if (!(env->pstate & PSTATE_SP)) {
         /* Access to SP_EL0 is undefined if it's being used as
          * the stack pointer.
          */
-- 
1.9.3




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