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[PULL,06/11] target/arm: Suppress Coverity warning for PRF

Message ID 20180709135435.836-7-peter.maydell@linaro.org
State New
Headers show
Series [PULL,01/11] hw/arm/smmu-common: Fix devfn computation in smmu_iommu_mr | expand

Commit Message

Peter Maydell July 9, 2018, 1:54 p.m. UTC 
From: Richard Henderson <richard.henderson@linaro.org>

These instructions must perform the sve_access_check, but
since they are implemented as NOPs there is no generated
code to elide when the access check fails.

Fixes: Coverity issues 1393780 & 1393779.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/translate-sve.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c
index c080345b9c7..d41f1155f91 100644
--- a/target/arm/translate-sve.c
+++ b/target/arm/translate-sve.c
@@ -5164,7 +5164,7 @@  static bool trans_ST1_zpiz(DisasContext *s, arg_ST1_zpiz *a, uint32_t insn)
 static bool trans_PRF(DisasContext *s, arg_PRF *a, uint32_t insn)
 {
     /* Prefetch is a nop within QEMU.  */
-    sve_access_check(s);
+    (void)sve_access_check(s);
     return true;
 }
 
@@ -5174,7 +5174,7 @@  static bool trans_PRF_rr(DisasContext *s, arg_PRF_rr *a, uint32_t insn)
         return false;
     }
     /* Prefetch is a nop within QEMU.  */
-    sve_access_check(s);
+    (void)sve_access_check(s);
     return true;
 }