diff mbox series

[v2,01/10] target/arm: Don't corrupt high half of PMOVSR when cycle counter overflows

Message ID 20220822132358.3524971-2-peter.maydell@linaro.org
State Superseded
Headers show
Series target/arm: Implement FEAT_PMUv3p5 | expand

Commit Message

Peter Maydell Aug. 22, 2022, 1:23 p.m. UTC 
When the cycle counter overflows, we are intended to set bit 31 in PMOVSR
to indicate this. However a missing ULL suffix means that we end up
setting all of bits 63-31. Fix the bug.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/target/arm/helper.c b/target/arm/helper.c
index d7bc467a2a5..87c89748954 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -1186,7 +1186,7 @@  static void pmccntr_op_start(CPUARMState *env)
         uint64_t overflow_mask = env->cp15.c9_pmcr & PMCRLC ? \
                                  1ull << 63 : 1ull << 31;
         if (env->cp15.c15_ccnt & ~new_pmccntr & overflow_mask) {
-            env->cp15.c9_pmovsr |= (1 << 31);
+            env->cp15.c9_pmovsr |= (1ULL << 31);
             pmu_update_irq(env);
         }