diff options
Diffstat (limited to 'gdb/testsuite/gdb.arch/ppc64-atomic-inst.c')
| -rw-r--r-- | gdb/testsuite/gdb.arch/ppc64-atomic-inst.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/gdb/testsuite/gdb.arch/ppc64-atomic-inst.c b/gdb/testsuite/gdb.arch/ppc64-atomic-inst.c new file mode 100644 index 0000000..3628e0f --- /dev/null +++ b/gdb/testsuite/gdb.arch/ppc64-atomic-inst.c @@ -0,0 +1,44 @@ +/* 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; +} |