/* This file is part of GDB, the GNU debugger. Copyright 2008, 2009, 2010 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <stdio.h> int main() { unsigned int word = 0; unsigned int *word_addr = &word; unsigned long dword = 0; unsigned long *dword_addr = &dword; __asm __volatile ("1: lwarx %0,0,%2\n" \ " addi %0,%0,1\n" \ " stwcx. %0,0,%2\n" \ " bne- 1b" \ : "=&b" (word), "=m" (*word_addr) \ : "b" (word_addr), "m" (*word_addr) \ : "cr0", "memory"); \ __asm __volatile ("1: ldarx %0,0,%2\n" \ " addi %0,%0,1\n" \ " stdcx. %0,0,%2\n" \ " bne- 1b" \ : "=&b" (dword), "=m" (*dword_addr) \ : "b" (dword_addr), "m" (*dword_addr) \ : "cr0", "memory"); \ return 0; }