| /* This file is part of GDB, the GNU debugger. |
| |
| Copyright 2008-2021 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/>. */ |
| |
| int main(void) |
| { |
| unsigned long tmp, cond; |
| unsigned long dword = 0; |
| |
| /* Test that we can step over ldxr/stxr. This sequence should step from |
| ldxr to the following __asm __volatile. */ |
| __asm __volatile ("1: ldxr %0,%2\n" \ |
| " cmp %0,#1\n" \ |
| " b.eq out\n" \ |
| " add %0,%0,1\n" \ |
| " stxr %w1,%0,%2\n" \ |
| " cbnz %w1,1b" \ |
| : "=&r" (tmp), "=&r" (cond), "+Q" (dword) \ |
| : : "memory"); |
| |
| /* This sequence should take the conditional branch and step from ldxr |
| to the return dword line. */ |
| __asm __volatile ("1: ldxr %0,%2\n" \ |
| " cmp %0,#1\n" \ |
| " b.eq out\n" \ |
| " add %0,%0,1\n" \ |
| " stxr %w1,%0,%2\n" \ |
| " cbnz %w1,1b\n" \ |
| : "=&r" (tmp), "=&r" (cond), "+Q" (dword) \ |
| : : "memory"); |
| |
| dword = -1; |
| __asm __volatile ("out:\n"); |
| return dword; |
| } |