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/* Shared object part of test for setjmp interoperability with static
dlopen BZ #21895.
Copyright (C) 2017-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <string.h>
#include <setjmp.h>
/* Copy r1 adress to a local variable. */
#define GET_STACK_POINTER(sp) \
({ \
asm volatile ("mr %0, 1\n\t" \
: "=r" (sp)); \
})
jmp_buf jb;
void (*bar)(jmp_buf, unsigned long);
void
lbar (unsigned long sp)
{
bar(jb, sp);
for(;;);
}
void
foo (void)
{
unsigned long sp;
/* Copy r1 (stack pointer) to sp. It will be use later to get
TOC area. */
GET_STACK_POINTER(sp);
setjmp(jb);
lbar(sp);
for(;;);
}
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