2003-02-05 09:54:24 +00:00
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/* Clean up stack frames unwound by longjmp. Linux/s390 version.
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2017-01-01 00:14:16 +00:00
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Copyright (C) 2003-2017 Free Software Foundation, Inc.
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2003-02-05 09:54:24 +00:00
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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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2003-07-31 19:26:38 +00:00
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2003-02-05 09:54:24 +00:00
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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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2012-02-09 23:18:22 +00:00
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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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2003-02-05 09:54:24 +00:00
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#include <setjmp.h>
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#include <stddef.h>
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Use __libc_ptf_call in _longjmp_unwind
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.
2015-09-18 19:22:36 +00:00
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#include <libc-lock.h>
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2003-02-05 09:54:24 +00:00
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2003-07-31 19:26:38 +00:00
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extern void __pthread_cleanup_upto (__jmp_buf env, char *targetframe);
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2003-02-05 09:54:24 +00:00
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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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2012-12-08 07:33:24 +00:00
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char local_var;
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2007-01-17 08:37:26 +00:00
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Use __libc_ptf_call in _longjmp_unwind
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.
2015-09-18 19:22:36 +00:00
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__libc_ptf_call (__pthread_cleanup_upto, (env->__jmpbuf, &local_var), 0);
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2003-02-05 09:54:24 +00:00
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}
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