target/tricore: Use unsigned types for bitops in helper_eq_b()

Coverity points out that in helper_eq_b() we have an int32_t 'msk'
and we end up shifting into its sign bit. This is OK for QEMU because
we use -fwrapv to give this well defined semantics, but when you look
at what this function is doing it's doing bit operations, so we
should be using an unsigned variable anyway. This also matches the
return type of the function.

Make 'ret' and 'msk' uint32_t.

Resolves: Coverity CID 1547758
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240723151042.1396610-1-peter.maydell@linaro.org

diff --git a/target/tricore/op_helper.c b/target/tricore/op_helper.c
index ba9c4444b39411b94d117b7201157af1fb53c219..a0d5a0da1df8a47fe57087e5ac677e6d54cb82b4 100644 (file)
--- a/target/tricore/op_helper.c
+++ b/target/tricore/op_helper.c
@@ -1505,8 +1505,8 @@ uint32_t helper_sub_h(CPUTriCoreState *env, target_ulong r1, target_ulong r2)
 
 uint32_t helper_eq_b(target_ulong r1, target_ulong r2)
 {
-    int32_t ret;
-    int32_t i, msk;
+    uint32_t ret, msk;
+    int32_t i;
 
     ret = 0;
     msk = 0xff;