alpha.h File Reference

Include dependency graph for alpha.h:

Go to the source code of this file.

Macros
#define	AO_NO_DD_ORDERING
#define	AO_HAVE_nop_full
#define	AO_HAVE_nop_write
#define	AO_HAVE_compare_and_swap

Functions
AO_INLINE void	AO_nop_full (void)
AO_INLINE void	AO_nop_write (void)
AO_INLINE int	AO_compare_and_swap (volatile AO_t *addr, AO_t old, AO_t new_val)

Macro Definition Documentation

AO_HAVE_compare_and_swap

#define AO_HAVE_compare_and_swap

Definition at line 65 of file alpha.h.

AO_HAVE_nop_full

#define AO_HAVE_nop_full

Definition at line 31 of file alpha.h.

AO_HAVE_nop_write

#define AO_HAVE_nop_write

Definition at line 38 of file alpha.h.

AO_NO_DD_ORDERING

#define AO_NO_DD_ORDERING

Definition at line 23 of file alpha.h.

Function Documentation

AO_compare_and_swap()

AO_INLINE int AO_compare_and_swap	(	volatile AO_t *	addr,
		AO_t	old,
		AO_t	new_val
	)

Definition at line 46 of file alpha.h.

{
  unsigned long was_equal;
  unsigned long temp;
 
  __asm__ __volatile__(
                     "1:     ldq_l %0,%1\n"
                     "       cmpeq %0,%4,%2\n"
                     "       mov %3,%0\n"
                     "       beq %2,2f\n"
                     "       stq_c %0,%1\n"
                     "       beq %0,1b\n"
                     "2:\n"
                     : "=&r" (temp), "+m" (*addr), "=&r" (was_equal)
                     : "r" (new_val), "Ir" (old)
                     :"memory");
  return (int)was_equal;
}

AO_nop_full()

AO_INLINE void AO_nop_full

(

void

)

Definition at line 27 of file alpha.h.

{
  __asm__ __volatile__("mb" : : : "memory");
}

AO_nop_write()

AO_INLINE void AO_nop_write

(

void

)

Definition at line 34 of file alpha.h.

{
  __asm__ __volatile__("wmb" : : : "memory");
}