summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/powerpc/bits/atomicity.h
diff options
context:
space:
mode:
authorEric Andersen <andersen@codepoet.org>2006-08-21 23:29:36 +0000
committerEric Andersen <andersen@codepoet.org>2006-08-21 23:29:36 +0000
commit4beed843c11a1f3079c775e501dbe1069e4c7bbe (patch)
tree104921f9419e00744b3e787a09c48505bf3b4d83 /libc/sysdeps/linux/powerpc/bits/atomicity.h
parent82911dd00068e8978d0da4b44dd0fc4b833b8c72 (diff)
bits/profil-counter.h and bits/atomicity.h are leftovers from the old gprof
based profiling I nuked ages ago since tools like oprofile are non invasive and work so much better.
Diffstat (limited to 'libc/sysdeps/linux/powerpc/bits/atomicity.h')
-rw-r--r--libc/sysdeps/linux/powerpc/bits/atomicity.h104
1 files changed, 0 insertions, 104 deletions
diff --git a/libc/sysdeps/linux/powerpc/bits/atomicity.h b/libc/sysdeps/linux/powerpc/bits/atomicity.h
deleted file mode 100644
index 6969749e8..000000000
--- a/libc/sysdeps/linux/powerpc/bits/atomicity.h
+++ /dev/null
@@ -1,104 +0,0 @@
-/* Low-level functions for atomic operations. PowerPC version.
- Copyright (C) 1997, 1998, 1999, 2000 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
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#ifndef _ATOMICITY_H
-#define _ATOMICITY_H 1
-
-#include <inttypes.h>
-
-#if BROKEN_PPC_ASM_CR0
-# define __ATOMICITY_INLINE /* nothing */
-#else
-# define __ATOMICITY_INLINE inline
-#endif
-
-static __ATOMICITY_INLINE int
-__attribute_used__
-exchange_and_add (volatile uint32_t *mem, int val)
-{
- int tmp, result;
- __asm__ ("\n\
-0: lwarx %0,0,%2 \n\
- add%I3 %1,%0,%3 \n\
- stwcx. %1,0,%2 \n\
- bne- 0b \n\
-" : "=&b"(result), "=&r"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory");
- return result;
-}
-
-static __ATOMICITY_INLINE void
-__attribute_used__
-atomic_add (volatile uint32_t *mem, int val)
-{
- int tmp;
- __asm__ ("\n\
-0: lwarx %0,0,%1 \n\
- add%I2 %0,%0,%2 \n\
- stwcx. %0,0,%1 \n\
- bne- 0b \n\
-" : "=&b"(tmp) : "r" (mem), "Ir"(val) : "cr0", "memory");
-}
-
-static __ATOMICITY_INLINE int
-__attribute_used__
-compare_and_swap (volatile long int *p, long int oldval, long int newval)
-{
- int result;
- __asm__ ("\n\
-0: lwarx %0,0,%1 \n\
- sub%I2c. %0,%0,%2 \n\
- cntlzw %0,%0 \n\
- bne- 1f \n\
- stwcx. %3,0,%1 \n\
- bne- 0b \n\
-1: \n\
-" : "=&b"(result) : "r"(p), "Ir"(oldval), "r"(newval) : "cr0", "memory");
- return result >> 5;
-}
-
-static __ATOMICITY_INLINE long int
-__attribute_used__
-always_swap (volatile long int *p, long int newval)
-{
- long int result;
- __asm__ ("\n\
-0: lwarx %0,0,%1 \n\
- stwcx. %2,0,%1 \n\
- bne- 0b \n\
-" : "=&r"(result) : "r"(p), "r"(newval) : "cr0", "memory");
- return result;
-}
-
-static __ATOMICITY_INLINE int
-__attribute_used__
-test_and_set (volatile long int *p, long int newval)
-{
- int result;
- __asm__ ("\n\
-0: lwarx %0,0,%1 \n\
- cmpwi %0,0 \n\
- bne- 1f \n\
- stwcx. %2,0,%1 \n\
- bne- 0b \n\
-1: \n\
-" : "=&r"(result) : "r"(p), "r"(newval) : "cr0", "memory");
- return result;
-}
-
-#endif /* atomicity.h */