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[Qemu-devel] [PATCH] Correct use of ! and &
From: |
Blue Swirl |
Subject: |
[Qemu-devel] [PATCH] Correct use of ! and & |
Date: |
Fri, 14 Jan 2011 22:05:11 +0000 |
Combining bitwise AND and logical NOT is suspicious.
Fixed by this Coccinelle script:
// From http://article.gmane.org/gmane.linux.kernel/646367
@@ expression E1,E2; @@
(
!E1 & !E2
|
- !E1 & E2
+ !(E1 & E2)
)
Signed-off-by: Blue Swirl <address@hidden>
---
target-sh4/helper.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/target-sh4/helper.c b/target-sh4/helper.c
index 2343366..c6af959 100644
--- a/target-sh4/helper.c
+++ b/target-sh4/helper.c
@@ -380,7 +380,7 @@ static int get_mmu_address(CPUState * env,
target_ulong * physical,
MMU_DTLB_VIOLATION_READ;
} else if ((rw == 1) && !(matching->pr & 1)) {
n = MMU_DTLB_VIOLATION_WRITE;
- } else if ((rw == 1) & !matching->d) {
+ } else if (!(matching->d & (rw == 1))) {
n = MMU_DTLB_INITIAL_WRITE;
} else {
*prot = PAGE_READ;
@@ -430,7 +430,7 @@ static int get_physical_address(CPUState * env,
target_ulong * physical,
}
/* If MMU is disabled, return the corresponding physical page */
- if (!env->mmucr & MMUCR_AT) {
+ if (!(env->mmucr & MMUCR_AT)) {
*physical = address & 0x1FFFFFFF;
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
return MMU_OK;
--
1.6.2.4
- [Qemu-devel] [PATCH] Correct use of ! and &,
Blue Swirl <=