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glibc  2.9
Defines | Functions
pt-machine.h File Reference
#include <sgidefs.h>
#include <sys/tas.h>
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Go to the source code of this file.


#define PT_EI   extern inline __attribute__ ((always_inline))
#define CURRENT_STACK_FRAME   stack_pointer


long int testandset (int *spinlock)
int __compare_and_swap (long int *p, long int oldval, long int newval)
register char *stack_pointer __asm__ ("$29")

Define Documentation

#define CURRENT_STACK_FRAME   stack_pointer

Definition at line 49 of file pt-machine.h.

Definition at line 55 of file pt-machine.h.

#define PT_EI   extern inline __attribute__ ((always_inline))

Definition at line 31 of file pt-machine.h.

Function Documentation

register char* stack_pointer __asm__ ( "$29"  )
int __compare_and_swap ( long int p,
long int  oldval,
long int  newval 
) [inline]

Definition at line 100 of file pt-machine.h.

  long int ret;

  __asm__ __volatile__ (
       "/* Inline compare & swap */\n"
       "ldq_l %0,%4\n\t"
       "cmpeq %0,%2,%0\n\t"
       "beq %0,2f\n\t"
       "mov %3,%0\n\t"
       "stq_c %0,%1\n\t"
       "beq %0,1b\n\t"
       "/* End compare & swap */"
       : "=&r"(ret), "=m"(*p)
       : "r"(oldval), "r"(newval), "m"(*p)
        : "memory");

  return ret;
long int testandset ( int spinlock)

Definition at line 53 of file pt-machine.h.

  long int ret, temp;

  __asm__ __volatile__(
       "/* Inline spinlock test & set */\n"
       "ldl_l %0,%3\n\t"
       "bne %0,2f\n\t"
       "or $31,1,%1\n\t"
       "stl_c %1,%2\n\t"
       "beq %1,1b\n"
       "/* End spinlock test & set */"
       : "=&r"(ret), "=&r"(temp), "=m"(*spinlock)
       : "m"(*spinlock)
        : "memory");

  return ret;