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Diffstat (limited to 'arch/s390/include/asm/cmpxchg.h')
-rw-r--r--arch/s390/include/asm/cmpxchg.h54
1 files changed, 36 insertions, 18 deletions
diff --git a/arch/s390/include/asm/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h
index 81d7908416cf..8d798e962b63 100644
--- a/arch/s390/include/asm/cmpxchg.h
+++ b/arch/s390/include/asm/cmpxchg.h
@@ -29,7 +29,7 @@ static inline unsigned long __xchg(unsigned long x, void *ptr, int size)
" cs %0,0,%4\n"
" jl 0b\n"
: "=&d" (old), "=Q" (*(int *) addr)
- : "d" (x << shift), "d" (~(255 << shift)),
+ : "d" ((x & 0xff) << shift), "d" (~(0xff << shift)),
"Q" (*(int *) addr) : "memory", "cc", "0");
return old >> shift;
case 2:
@@ -44,7 +44,7 @@ static inline unsigned long __xchg(unsigned long x, void *ptr, int size)
" cs %0,0,%4\n"
" jl 0b\n"
: "=&d" (old), "=Q" (*(int *) addr)
- : "d" (x << shift), "d" (~(65535 << shift)),
+ : "d" ((x & 0xffff) << shift), "d" (~(0xffff << shift)),
"Q" (*(int *) addr) : "memory", "cc", "0");
return old >> shift;
case 4:
@@ -113,9 +113,10 @@ static inline unsigned long __cmpxchg(void *ptr, unsigned long old,
" nr %1,%5\n"
" jnz 0b\n"
"1:"
- : "=&d" (prev), "=&d" (tmp), "=Q" (*(int *) ptr)
- : "d" (old << shift), "d" (new << shift),
- "d" (~(255 << shift)), "Q" (*(int *) ptr)
+ : "=&d" (prev), "=&d" (tmp), "+Q" (*(int *) addr)
+ : "d" ((old & 0xff) << shift),
+ "d" ((new & 0xff) << shift),
+ "d" (~(0xff << shift))
: "memory", "cc");
return prev >> shift;
case 2:
@@ -134,9 +135,10 @@ static inline unsigned long __cmpxchg(void *ptr, unsigned long old,
" nr %1,%5\n"
" jnz 0b\n"
"1:"
- : "=&d" (prev), "=&d" (tmp), "=Q" (*(int *) ptr)
- : "d" (old << shift), "d" (new << shift),
- "d" (~(65535 << shift)), "Q" (*(int *) ptr)
+ : "=&d" (prev), "=&d" (tmp), "+Q" (*(int *) addr)
+ : "d" ((old & 0xffff) << shift),
+ "d" ((new & 0xffff) << shift),
+ "d" (~(0xffff << shift))
: "memory", "cc");
return prev >> shift;
case 4:
@@ -160,9 +162,14 @@ static inline unsigned long __cmpxchg(void *ptr, unsigned long old,
return old;
}
-#define cmpxchg(ptr, o, n) \
- ((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \
- (unsigned long)(n), sizeof(*(ptr))))
+#define cmpxchg(ptr, o, n) \
+({ \
+ __typeof__(*(ptr)) __ret; \
+ __ret = (__typeof__(*(ptr))) \
+ __cmpxchg((ptr), (unsigned long)(o), (unsigned long)(n), \
+ sizeof(*(ptr))); \
+ __ret; \
+})
#ifdef CONFIG_64BIT
#define cmpxchg64(ptr, o, n) \
@@ -181,13 +188,19 @@ static inline unsigned long long __cmpxchg64(void *ptr,
" cds %0,%2,%1"
: "+&d" (rp_old), "=Q" (ptr)
: "d" (rp_new), "Q" (ptr)
- : "cc");
+ : "memory", "cc");
return rp_old.pair;
}
-#define cmpxchg64(ptr, o, n) \
- ((__typeof__(*(ptr)))__cmpxchg64((ptr), \
- (unsigned long long)(o), \
- (unsigned long long)(n)))
+
+#define cmpxchg64(ptr, o, n) \
+({ \
+ __typeof__(*(ptr)) __ret; \
+ __ret = (__typeof__(*(ptr))) \
+ __cmpxchg64((ptr), \
+ (unsigned long long)(o), \
+ (unsigned long long)(n)); \
+ __ret; \
+})
#endif /* CONFIG_64BIT */
#include <asm-generic/cmpxchg-local.h>
@@ -216,8 +229,13 @@ static inline unsigned long __cmpxchg_local(void *ptr,
* them available.
*/
#define cmpxchg_local(ptr, o, n) \
- ((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \
- (unsigned long)(n), sizeof(*(ptr))))
+({ \
+ __typeof__(*(ptr)) __ret; \
+ __ret = (__typeof__(*(ptr))) \
+ __cmpxchg_local((ptr), (unsigned long)(o), \
+ (unsigned long)(n), sizeof(*(ptr))); \
+ __ret; \
+})
#define cmpxchg64_local(ptr, o, n) cmpxchg64((ptr), (o), (n))