aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/arm/atomicity.h
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/arm/atomicity.h')
-rw-r--r--sysdeps/arm/atomicity.h87
1 files changed, 0 insertions, 87 deletions
diff --git a/sysdeps/arm/atomicity.h b/sysdeps/arm/atomicity.h
deleted file mode 100644
index 1a437a6..0000000
--- a/sysdeps/arm/atomicity.h
+++ /dev/null
@@ -1,87 +0,0 @@
-/* Low-level functions for atomic operations. ARM 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>
-
-
-static inline int
-__attribute__ ((unused))
-exchange_and_add (volatile uint32_t *mem, int val)
-{
- int tmp1;
- int tmp2;
- int result;
- __asm__ ("\n"
- "0:\tldr\t%0,[%3]\n\t"
- "add\t%1,%0,%4\n\t"
- "swp\t%2,%1,[%3]\n\t"
- "cmp\t%0,%2\n\t"
- "swpne\t%1,%2,[%3]\n\t"
- "bne\t0b"
- : "=&r" (result), "=&r" (tmp1), "=&r" (tmp2)
- : "r" (mem), "r"(val)
- : "cc", "memory");
- return result;
-}
-
-static inline void
-__attribute__ ((unused))
-atomic_add (volatile uint32_t *mem, int val)
-{
- int tmp1;
- int tmp2;
- int tmp3;
- __asm__ ("\n"
- "0:\tldr\t%0,[%3]\n\t"
- "add\t%1,%0,%4\n\t"
- "swp\t%2,%1,[%3]\n\t"
- "cmp\t%0,%2\n\t"
- "swpne\t%1,%2,[%3]\n\t"
- "bne\t0b"
- : "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3)
- : "r" (mem), "r"(val)
- : "cc", "memory");
-}
-
-static inline int
-__attribute__ ((unused))
-compare_and_swap (volatile long int *p, long int oldval, long int newval)
-{
- int result, tmp;
- __asm__ ("\n"
- "0:\tldr\t%1,[%2]\n\t"
- "mov\t%0,#0\n\t"
- "cmp\t%1,%4\n\t"
- "bne\t1f\n\t"
- "swp\t%0,%3,[%2]\n\t"
- "cmp\t%1,%0\n\t"
- "swpne\t%1,%0,[%2]\n\t"
- "bne\t0b\n\t"
- "mov\t%0,#1\n"
- "1:"
- : "=&r" (result), "=&r" (tmp)
- : "r" (p), "r" (newval), "r" (oldval)
- : "cc", "memory");
- return result;
-}
-
-#endif /* atomicity.h */