Changeset 0b917dd in mainline

Timestamp:

2006-06-11T17:02:17Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

43752b6

Parents:

e5dc7b8

Message:

Fix prein/predec instructions to be the same as on ia32.

File:

• arch/amd64/include/atomic.h (modified) (2 diffs)

arch/amd64/include/atomic.h

@@ -53 +53 @@
 static inline long atomic_postinc(atomic_t *val) 
 {
-        long r;
+        long r = 1;
 
         __asm__ volatile (
-                "movq $1, %0\n"
-                "lock xaddq %0, %1\n"
-                : "=r" (r), "=m" (val->count)
+                "lock xaddq %1, %0\n"
+                : "=m" (val->count) : "r" (r)
         );
 
@@ -66 +65 @@
 static inline long atomic_postdec(atomic_t *val) 
 {
-        long r;
+        long r = -1;
         
         __asm__ volatile (
-                "movq $-1, %0\n"
-                "lock xaddq %0, %1\n"
-                : "=r" (r), "=m" (val->count)
+                "lock xaddq %1, %0\n"
+                : "=m" (val->count) : "r" (r)
         );