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6253bacdc0
Since __libc_longjmp is a private interface for cancellation implementation in libpthread, there is no need to provide hidden __libc_longjmp in libc. Tested with build-many-glibcs.py. * include/setjmp.h (__libc_longjmp): Remove libc_hidden_proto. * setjmp/longjmp.c (__libc_longjmp): Remove libc_hidden_def. * sysdeps/s390/longjmp.c (__libc_longjmp): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/longjmp.S (__libc_longjmp): Likewise.
51 lines
1.6 KiB
ArmAsm
51 lines
1.6 KiB
ArmAsm
/* Copyright (C) 1997-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson (rth@tamu.edu).
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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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/* longjmp is implemented in terms of the setcontext trap on Linux/Sparc64. */
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#include <sysdep.h>
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/* Offsets into the jmp_buf structure. */
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#define O_mask_was_saved 512
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#define O_gregs 32
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#define O_g1 (O_gregs + 4*8)
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/* void longjmp (sigjmp_buf env, int val) */
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ENTRY(__libc_siglongjmp)
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/* Modify the context with the value we want to return. */
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movre %o1, 1, %o1
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stx %o1, [%o0 + O_g1]
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/* Let setcontext know if we want to modify the current sigmask. */
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ld [%o0 + O_mask_was_saved], %o1
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/* And bamf back to where we belong! */
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ta 0x6f
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END(__libc_siglongjmp)
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strong_alias(__libc_siglongjmp, __longjmp)
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strong_alias(__libc_siglongjmp, __libc_longjmp)
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weak_alias (__libc_siglongjmp, longjmp)
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weak_alias (__libc_siglongjmp, _longjmp)
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weak_alias (__libc_siglongjmp, siglongjmp)
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