Changeset ad2e39b in mainline for uspace/lib/libc/arch/amd64/include/atomic.h

Timestamp:

2008-06-16T21:36:39Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

9f491d7

Parents:

5336643

Message:

First argument to atomic functions is read-write (amd64).

File:

• uspace/lib/libc/arch/amd64/include/atomic.h (modified) (4 diffs)

uspace/lib/libc/arch/amd64/include/atomic.h

@@ -39 +39 @@
 
 static inline void atomic_inc(atomic_t *val) {
-        asm volatile ("lock incq %0\n" : "=m" (val->count));
+        asm volatile ("lock incq %0\n" : "+m" (val->count));
 }
 
 static inline void atomic_dec(atomic_t *val) {
-        asm volatile ("lock decq %0\n" : "=m" (val->count));
+        asm volatile ("lock decq %0\n" : "+m" (val->count));
 }
 
@@ -53 +53 @@
                 "movq $1, %0\n"
                 "lock xaddq %0, %1\n"
-                : "=r" (r), "=m" (val->count)
+                : "=r" (r), "+m" (val->count)
         );
 
@@ -66 +66 @@
                 "movq $-1, %0\n"
                 "lock xaddq %0, %1\n"
-                : "=r" (r), "=m" (val->count)
+                : "=r" (r), "+m" (val->count)
         );
         
@@ -72 +72 @@
 }
 
-#define atomic_preinc(val) (atomic_postinc(val)+1)
-#define atomic_predec(val) (atomic_postdec(val)-1)
+#define atomic_preinc(val) (atomic_postinc(val) + 1)
+#define atomic_predec(val) (atomic_postdec(val) - 1)
 
 #endif