diff options
Diffstat (limited to 'sysdeps/powerpc/atomicity.h')
| -rw-r--r-- | sysdeps/powerpc/atomicity.h | 41 |
1 files changed, 20 insertions, 21 deletions
diff --git a/sysdeps/powerpc/atomicity.h b/sysdeps/powerpc/atomicity.h index 5b56532..bb5f491 100644 --- a/sysdeps/powerpc/atomicity.h +++ b/sysdeps/powerpc/atomicity.h @@ -1,5 +1,5 @@ /* Low-level functions for atomic operations. PowerPC version. - Copyright (C) 1997, 1998 Free Software Foundation, Inc. + Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -33,12 +33,12 @@ __attribute__ ((unused)) exchange_and_add (volatile uint32_t *mem, int val) { int tmp, result; - __asm__ __volatile__ ("\ + __asm__ ("\ 0: lwarx %0,0,%2 - add %1,%3,%0 + add%I3 %1,%0,%3 stwcx. %1,0,%2 bne- 0b -" : "=&r"(result), "=&r"(tmp) : "r" (mem), "r"(val) : "cr0"); +" : "=&b"(result), "=&r"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory"); return result; } @@ -47,12 +47,12 @@ __attribute__ ((unused)) atomic_add (volatile uint32_t *mem, int val) { int tmp; - __asm__ __volatile__("\ + __asm__ ("\ 0: lwarx %0,0,%1 - add %0,%2,%0 + add%I2 %0,%0,%2 stwcx. %0,0,%1 bne- 0b -" : "=&r"(tmp) : "r" (mem), "r"(val) : "cr0"); +" : "=&b"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory"); } static __ATOMICITY_INLINE int @@ -60,16 +60,16 @@ __attribute__ ((unused)) compare_and_swap (volatile long int *p, long int oldval, long int newval) { int result; - __asm__ __volatile__ ("\ + __asm__ ("\ 0: lwarx %0,0,%1 - xor. %0,%0,%2 + sub%I2c. %0,%0,%2 cntlzw %0,%0 bne- 1f stwcx. %3,0,%1 bne- 0b -1: srwi %0,%0,5 -" : "=&r"(result) : "r"(p), "r"(oldval), "r"(newval) : "cr0"); - return result; +1: +" : "=&b"(result) : "r"(p), "Ir"(oldval), "r"(newval) : "cr0", "memory"); + return result >> 5; } static __ATOMICITY_INLINE long int @@ -77,28 +77,27 @@ __attribute__ ((unused)) always_swap (volatile long int *p, long int newval) { long int result; - __asm__ __volatile__ ("\ + __asm__ ("\ 0: lwarx %0,0,%1 stwcx. %2,0,%1 bne- 0b -" : "=&r"(result) : "r"(p), "r"(newval) : "cr0"); +" : "=&r"(result) : "r"(p), "r"(newval) : "cr0", "memory"); return result; } static __ATOMICITY_INLINE int __attribute__ ((unused)) -test_and_set (volatile long int *p, long int oldval, long int newval) +test_and_set (volatile long int *p, long int newval) { int result; - __asm__ __volatile__ ("\ + __asm__ ("\ 0: lwarx %0,0,%1 - xor. %0,%0,%2 - cntlzw %0,%0 + cmpwi %0,0 bne- 1f - stwcx. %3,0,%1 + stwcx. %2,0,%1 bne- 0b -1: srwi %0,%0,5 -" : "=&r"(result) : "r"(p), "r"(oldval), "r"(newval) : "cr0"); +1: +" : "=&r"(result) : "r"(p), "r"(newval) : "cr0", "memory"); return result; } |