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1 | /* This file is part of GDB, the GNU debugger. |
2 | ||
7b6bb8da | 3 | Copyright 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
fb546a2f LM |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include <stdio.h> | |
19 | ||
20 | int main() | |
21 | { | |
22 | unsigned int word = 0; | |
23 | unsigned int *word_addr = &word; | |
24 | unsigned long dword = 0; | |
25 | unsigned long *dword_addr = &dword; | |
26 | ||
27 | __asm __volatile ("1: lwarx %0,0,%2\n" \ | |
28 | " addi %0,%0,1\n" \ | |
29 | " stwcx. %0,0,%2\n" \ | |
30 | " bne- 1b" \ | |
31 | : "=&b" (word), "=m" (*word_addr) \ | |
32 | : "b" (word_addr), "m" (*word_addr) \ | |
33 | : "cr0", "memory"); \ | |
34 | ||
35 | __asm __volatile ("1: ldarx %0,0,%2\n" \ | |
36 | " addi %0,%0,1\n" \ | |
37 | " stdcx. %0,0,%2\n" \ | |
38 | " bne- 1b" \ | |
39 | : "=&b" (dword), "=m" (*dword_addr) \ | |
40 | : "b" (dword_addr), "m" (*dword_addr) \ | |
41 | : "cr0", "memory"); \ | |
42 | ||
43 | return 0; | |
44 | } |