qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[PATCH v2] target/ppc: Fix the test raising the decrementer exception


From: Cédric Le Goater
Subject: [PATCH v2] target/ppc: Fix the test raising the decrementer exception
Date: Tue, 5 Oct 2021 07:33:24 +0200

Commit 4d9b8ef9b5ab ("target/ppc: Fix 64-bit decrementer") introduced
new int64t variables and broke the test triggering the decrementer
exception. Revert partially the change to evaluate both clause of the
if statement.

Reported-by: Coverity CID 1464061
Fixes: 4d9b8ef9b5ab ("target/ppc: Fix 64-bit decrementer")
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/ppc/ppc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
index f5d012f860af..a724b0bb5ecb 100644
--- a/hw/ppc/ppc.c
+++ b/hw/ppc/ppc.c
@@ -848,7 +848,7 @@ static void __cpu_ppc_store_decr(PowerPCCPU *cpu, uint64_t 
*nextp,
      * On MSB edge based DEC implementations the MSB going from 0 -> 1 triggers
      * an edge interrupt, so raise it here too.
      */
-    if ((signed_value < 3) ||
+    if ((value < 3) ||
         ((tb_env->flags & PPC_DECR_UNDERFLOW_LEVEL) && signed_value < 0) ||
         ((tb_env->flags & PPC_DECR_UNDERFLOW_TRIGGERED) && signed_value < 0
           && signed_decr >= 0)) {
-- 
2.31.1




reply via email to

[Prev in Thread] Current Thread [Next in Thread]