44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
/* This file is part of GDB, the GNU debugger.
|
|
|
|
Copyright 2008-2012 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;
|
|
}
|