cmpxchg.h File Reference

#include <linux/compiler.h>
#include <linux/types.h>
#include <asm/cmpxchg-irq.h>

Go to the source code of this file.

Macros
#define	__xchg(ptr, x, size)
#define	xchg(ptr, x)   ((__typeof__(*(ptr)))__xchg((ptr),(unsigned long)(x), sizeof(*(ptr))))
#define	__HAVE_ARCH_CMPXCHG   1
#define	cmpxchg(ptr, o, n)

Functions
void	__xchg_called_with_bad_pointer (void)
void	__cmpxchg_called_with_bad_pointer (void)

Macro Definition Documentation

#define __HAVE_ARCH_CMPXCHG   1

Definition at line 49 of file cmpxchg.h.

#define __xchg	(		ptr,
			x,
			size
	)

Value:

({                          \
    unsigned long __xchg__res;          \
    volatile void *__xchg_ptr = (ptr);      \
    switch (size) {                 \
    case 4:                     \
        __xchg__res = xchg_u32(__xchg_ptr, x);  \
        break;                  \
    case 1:                     \
        __xchg__res = xchg_u8(__xchg_ptr, x);   \
        break;                  \
    default:                    \
        __xchg_called_with_bad_pointer();   \
        __xchg__res = x;            \
        break;                  \
    }                       \
                            \
    __xchg__res;                    \
})

Definition at line 22 of file cmpxchg.h.

#define cmpxchg	(		ptr,
			o,
			n
	)

Value:

({                                   \
     __typeof__(*(ptr)) _o_ = (o);                   \
     __typeof__(*(ptr)) _n_ = (n);                   \
     (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_,       \
                    (unsigned long)_n_, sizeof(*(ptr))); \
  })

Definition at line 62 of file cmpxchg.h.

#define xchg	(		ptr,
			x
	)		((__typeof__(*(ptr)))__xchg((ptr),(unsigned long)(x), sizeof(*(ptr))))

Definition at line 42 of file cmpxchg.h.

Function Documentation

void __cmpxchg_called_with_bad_pointer

(

void

)

void __xchg_called_with_bad_pointer

(

void

)