1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
/* This file is part of GDB, the GNU debugger.
Copyright 2008 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;
}
|
