target-mips: Avoid shifting left into sign bit

Add U suffix to various places where we shift a 1 left by 31,
to avoid undefined behaviour.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

1 files changed, 1 insertions, 1 deletions

diff --git a/target-mips/cpu.h b/target-mips/cpu.h
index 3ba3229e66..6c2014eddd 100644
--- a/target-mips/cpu.h
+++ b/target-mips/cpu.h
@@ -775,7 +775,7 @@ static inline void compute_hflags(CPUMIPSState *env)
            and disable the MIPS IV extensions to the MIPS III ISA.
            Some other MIPS IV CPUs ignore the bit, so the check here
            would be too restrictive for them.  */
-        if (env->CP0_Status & (1 << CP0St_CU3)) {
+        if (env->CP0_Status & (1U << CP0St_CU3)) {
             env->hflags |= MIPS_HFLAG_COP1X;
         }
     }