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/* setjmp for s390, ELF version.
Copyright (C) 2000-2014 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#define _ASM
#define _SETJMP_H
#include <bits/setjmp.h>
/* We include the BSD entry points here as well but we make
them weak. */
ENTRY (setjmp)
.weak C_SYMBOL_NAME (setjmp)
lhi %r3,1 /* second argument of one */
j 0f /* branch relativ to __sigsetjmp */
END (setjmp)
/* Binary compatibility entry point. */
ENTRY(_setjmp)
.weak C_SYMBOL_NAME (_setjmp)
lhi %r3,0 /* second argument of zero */
j 0f /* branch relativ to __sigsetjmp */
END (_setjmp)
libc_hidden_def (_setjmp)
ENTRY(__setjmp)
lhi %r3,0 /* second argument of zero */
j 0f /* branch relativ to __sigsetjmp */
END (__setjmp)
ENTRY(__sigsetjmp)
0:
#ifdef PTR_MANGLE
stm %r6,%r13,0(%r2) /* store registers in jmp_buf */
lr %r4,%r14
lr %r5,%r15
PTR_MANGLE (%r4, %r1)
PTR_MANGLE2 (%r5, %r1)
stm %r4,%r5,32(%r2)
#else
stm %r6,%r15,0(%r2) /* store registers in jmp_buf */
#endif
#ifndef __V1_JMPBUF
lhi %r4,0
st %r4,56(%r2) /* Set __flags to 0. */
#endif
std %f4,40(%r2)
std %f6,48(%r2)
#if defined NOT_IN_libc && defined IS_IN_rtld
/* In ld.so we never save the signal mask. */
lhi %r2,0
br %r14
#elif defined PIC
/* We cannot use the PLT, because it requires that %r12 be set, but
we can't save and restore our caller's value. Instead, we do an
indirect jump through the GOT. */
basr %r1,0
0: al %r1,1f-0b(0,%r1) /* get address of global offset table */
/* get address of __sigjmp_save from got */
l %r1,__sigjmp_save@GOT12(0,%r1)
br %r1
1: .long _GLOBAL_OFFSET_TABLE_ - 0b
#else
basr %r1,0
0: l %r1,1f-0b(0,%r1) /* load address of __sigjmp_save */
br %r1 /* tail-call __sigjmp_save */
1: .long __sigjmp_save
#endif
END (__sigsetjmp)
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