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/* This file is part of GDB, the GNU debugger.
Copyright 2008-2017 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;
}
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