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glibc  2.9
Defines | Functions
pt-machine.h File Reference

Go to the source code of this file.

Defines

#define PT_EI   extern inline __attribute__ ((always_inline))
#define MEMORY_BARRIER()   __asm__ __volatile__ ("bcr 15,0" : : : "memory")
#define CURRENT_STACK_FRAME   stack_pointer
#define THREAD_SELF
#define INIT_THREAD_SELF(descr, nr)
#define THREAD_GETMEM(descr, member)   ((void) sizeof (descr), THREAD_SELF->member)
#define THREAD_GETMEM_NC(descr, member)   ((void) sizeof (descr), THREAD_SELF->member)
#define THREAD_SETMEM(descr, member, value)   ((void) sizeof (descr), THREAD_SELF->member = (value))
#define THREAD_SETMEM_NC(descr, member, value)   ((void) sizeof (descr), THREAD_SELF->member = (value))
#define FLOATING_STACKS   1
#define ARCH_STACK_MAX_SIZE   8*1024*1024
#define HAS_COMPARE_AND_SWAP

Functions

long int testandset (int *spinlock)
int __compare_and_swap (long int *p, long int oldval, long int newval)
register char *stack_pointer __asm__ ("15")

Define Documentation

#define ARCH_STACK_MAX_SIZE   8*1024*1024

Definition at line 102 of file pt-machine.h.

#define CURRENT_STACK_FRAME   stack_pointer

Definition at line 58 of file pt-machine.h.

#define FLOATING_STACKS   1

Definition at line 99 of file pt-machine.h.

Definition at line 106 of file pt-machine.h.

#define INIT_THREAD_SELF (   descr,
  nr 
)
Value:
({                                       \
  __asm__ ("   sar  %%a1,%0\n"                                                \
           "   srlg 0,%0,32\n"                                                \
           "   sar  %%a0,0\n"                                                 \
           : : "d" (descr) : "0" );                                           \
})

Definition at line 80 of file pt-machine.h.

#define MEMORY_BARRIER ( )    __asm__ __volatile__ ("bcr 15,0" : : : "memory")

Definition at line 35 of file pt-machine.h.

#define PT_EI   extern inline __attribute__ ((always_inline))

Definition at line 26 of file pt-machine.h.

#define THREAD_GETMEM (   descr,
  member 
)    ((void) sizeof (descr), THREAD_SELF->member)

Definition at line 89 of file pt-machine.h.

#define THREAD_GETMEM_NC (   descr,
  member 
)    ((void) sizeof (descr), THREAD_SELF->member)

Definition at line 91 of file pt-machine.h.

#define THREAD_SELF
Value:
({                                                       \
  register pthread_descr __self;                                              \
  __asm__ ("   ear  %0,%%a0\n"                                                \
           "   sllg %0,%0,32\n"                                               \
           "   ear  %0,%%a1\n"                                                \
           : "=d" (__self) );                                                 \
  __self;                                                                     \
})

Definition at line 70 of file pt-machine.h.

#define THREAD_SETMEM (   descr,
  member,
  value 
)    ((void) sizeof (descr), THREAD_SELF->member = (value))

Definition at line 93 of file pt-machine.h.

#define THREAD_SETMEM_NC (   descr,
  member,
  value 
)    ((void) sizeof (descr), THREAD_SELF->member = (value))

Definition at line 95 of file pt-machine.h.


Function Documentation

register char* stack_pointer __asm__ ( "15"  )
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"
       "1:\t"
       "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"
       "2:\tmb\n"
       "/* 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"
       "1:\t"
       "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"
       "2:\tmb\n"
       "/* End spinlock test & set */"
       : "=&r"(ret), "=&r"(temp), "=m"(*spinlock)
       : "m"(*spinlock)
        : "memory");

  return ret;
}