-#define PPC405_ERR77(ra,rb)
-#define LWSYNC_ON_SMP "\n\tlwsync\n"
-#define ISYNC_ON_SMP "\n\tisync\n"
-
-#ifndef _INCLUDE_API_H
-
-static __inline__ void atomic_inc(int *v)
-{
- int t;
-
- __asm__ __volatile__(
-"1: lwarx %0,0,%2 # atomic_inc\n\
- addic %0,%0,1\n"
- PPC405_ERR77(0,%2)
-" stwcx. %0,0,%2 \n\
- bne- 1b"
- : "=&r" (t), "+m" (v)
- : "r" (&v)
- : "cc", "xer");
-}
-
-#endif /* #ifndef _INCLUDE_API_H */
-
-struct __xchg_dummy {
- unsigned long a[100];
-};
-#define __xg(x) ((struct __xchg_dummy *)(x))
-
-#ifndef _INCLUDE_API_H
-
-/*
- * Atomic exchange
- *
- * Changes the memory location '*ptr' to be val and returns
- * the previous value stored there.
- */
-static __always_inline unsigned long
-__xchg_u32(volatile void *p, unsigned long val)
-{
- unsigned long prev;
-
- __asm__ __volatile__(
- LWSYNC_ON_SMP
-"1: lwarx %0,0,%2 \n"
- PPC405_ERR77(0,%2)
-" stwcx. %3,0,%2 \n\
- bne- 1b"
- ISYNC_ON_SMP
- : "=&r" (prev), "+m" (*(volatile unsigned int *)p)
- : "r" (p), "r" (val)
- : "cc", "memory");
-
- return prev;
-}
-
-/*
- * This function doesn't exist, so you'll get a linker error
- * if something tries to do an invalid xchg().
- */
-extern void __xchg_called_with_bad_pointer(void);
-
-static __always_inline unsigned long
-__xchg(volatile void *ptr, unsigned long x, unsigned int size)
-{
- switch (size) {
- case 4:
- return __xchg_u32(ptr, x);
-#ifdef CONFIG_PPC64
- case 8:
- return __xchg_u64(ptr, x);
-#endif
- }
- __xchg_called_with_bad_pointer();
- return x;
-}
-
-#define xchg(ptr,x) \
- ({ \
- __typeof__(*(ptr)) _x_ = (x); \
- (__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, sizeof(*(ptr))); \
- })
-
-#endif /* #ifndef _INCLUDE_API_H */