52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
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/* Shared object part of test for setjmp interoperability with static
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dlopen BZ #21895.
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Copyright (C) 2017-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <string.h>
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#include <setjmp.h>
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/* Copy r1 adress to a local variable. */
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#define GET_STACK_POINTER(sp) \
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({ \
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asm volatile ("mr %0, 1\n\t" \
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: "=r" (sp)); \
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})
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jmp_buf jb;
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void (*bar)(jmp_buf, unsigned long);
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void
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lbar (unsigned long sp)
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{
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bar(jb, sp);
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for(;;);
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}
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void
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foo (void)
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{
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unsigned long sp;
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/* Copy r1 (stack pointer) to sp. It will be use later to get
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TOC area. */
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GET_STACK_POINTER(sp);
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setjmp(jb);
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lbar(sp);
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for(;;);
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}
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