/* Low-level functions for atomic operations. Stub version. Copyright (C) 1997,2001 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> #warning stub atomicity functions are not really atomic static inline int __attribute_used__ exchange_and_add (volatile uint32_t *mem, int val) { int result = *mem; *mem += val; return result; } static inline void __attribute_used__ atomic_add (volatile uint32_t *mem, int val) { *mem += val; } static inline int __attribute_used__ compare_and_swap (volatile long int *p, long int oldval, long int newval) { if (*p != oldval) return 0; *p = newval; return 1; } #endif /* atomicity.h */