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Use __libc_ptf_call in _longjmp_unwind to avoid duplicated logic. On x86-64, I got jmp-unwind.os: _longjmp_unwind: movl __libc_pthread_functions_init(%rip), %eax testl %eax, %eax jne .L4 rep ret .L4: movq 304+__libc_pthread_functions(%rip), %rax movq %rsp, %rsi ror $2*8+1, %rax xor %fs:48, %rax jmp *%rax jmp-unwind.o: _longjmp_unwind: movl $__pthread_cleanup_upto, %eax testq %rax, %rax je .L1 movq %rsp, %rsi jmp __pthread_cleanup_upto .L1: rep ret * sysdeps/nptl/jmp-unwind.c: Include <libc-lock.h> instead of <nptl/pthreadP.h>. (_longjmp_unwind): Use __libc_ptf_call. * sysdeps/unix/sysv/linux/s390/jmp-unwind.c: Likewise.
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
/* Clean up stack frames unwound by longjmp. Linux version.
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Copyright (C) 1995-2015 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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<http://www.gnu.org/licenses/>. */
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#include <setjmp.h>
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#include <stddef.h>
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#include <libc-lock.h>
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extern void __pthread_cleanup_upto (__jmp_buf env, char *targetframe);
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#pragma weak __pthread_cleanup_upto
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void
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_longjmp_unwind (jmp_buf env, int val)
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{
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__libc_ptf_call (__pthread_cleanup_upto, (env->__jmpbuf,
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CURRENT_STACK_FRAME), 0);
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}
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