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47 lines
2.0 KiB
ArmAsm
47 lines
2.0 KiB
ArmAsm
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/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. s390 version.
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Copyright (C) 2000 Free Software Foundation, Inc.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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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 Library General Public License as
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published by the Free Software Foundation ; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This just does a tail-call to `__sigsetjmp (ARG, 0)'.
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We cannot do it in C because it must be a tail-call, so frame-unwinding
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in setjmp doesn't clobber the state restored by longjmp. */
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#include <sysdep.h>
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ENTRY(_setjmp)
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#ifdef PIC
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/* We cannot use the PLT, because it requires that %r12 be set, but
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we can't save and restore our caller's value. Instead, we do an
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indirect jump through the GOT. */
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basr %r1,0
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.L0: al %r1,.L1 - .L0(0,%r1) /* get address of global offset table */
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/* get address of __sigjmp_save from got */
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l %r1,__sigjmp_save@GOT12(0,%r1)
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lhi %r3,0 /* second argument of one */
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br %r1
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.L1: .long _GLOBAL_OFFSET_TABLE_ - .L0
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#else
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basr %r1,0
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.L0: l %r1,.L1 - .L0(0,%r1) /* load address of __sigsetjmp */
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lhi %r3,0 /* second argument of zero */
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br %r1 /* branch to __sigsetjmp */
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.L1: .long __sigsetjmp
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#endif
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END (_setjmp)
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