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author | Jakub Jelinek <jakub@redhat.com> | 2007-07-12 18:26:36 +0000 |
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committer | Jakub Jelinek <jakub@redhat.com> | 2007-07-12 18:26:36 +0000 |
commit | 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch) | |
tree | 2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /sysdeps/arm/atomicity.h | |
parent | 7d58530341304d403a6626d7f7a1913165fe2f32 (diff) | |
download | glibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.gz glibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.xz glibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.zip |
2.5-18.1
Diffstat (limited to 'sysdeps/arm/atomicity.h')
-rw-r--r-- | sysdeps/arm/atomicity.h | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/sysdeps/arm/atomicity.h b/sysdeps/arm/atomicity.h deleted file mode 100644 index 1a437a6d35..0000000000 --- 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 */ |