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/* setjmp for s390, ELF version.
Copyright (C) 2000-2019 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>
#include <shlib-compat.h>
#include <stap-probe.h>
#if !IS_IN (rtld) && defined SHARED \
&& SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
# define NEED_COMPAT_SYMBOLS 1
/* We need a unique name in case of symbol versioning. */
# define setjmp __v1setjmp
# define _setjmp __v1_setjmp
# define __sigsetjmp __v1__sigsetjmp
#else
# define NEED_COMPAT_SYMBOLS 0
#endif
/* We include the BSD entry points here as well. */
ENTRY (setjmp)
lhi %r3,1 /* second argument of one */
j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
END (setjmp)
/* Binary compatibility entry point. */
ENTRY(_setjmp)
lhi %r3,0 /* second argument of zero */
j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
END (_setjmp)
#if NEED_COMPAT_SYMBOLS
strong_alias (_setjmp, __GI__setjmp)
#else
libc_hidden_def (_setjmp)
#endif
ENTRY(__setjmp)
lhi %r3,0 /* second argument of zero */
j .Linternal_sigsetjmp /* branch relativ to __sigsetjmp */
END (__setjmp)
ENTRY(__sigsetjmp)
.Linternal_sigsetjmp:
/* setjmp probe expects sig/setjmp first argument (4@%r2), second
argument (-4@%r3) and target address (4@%r14). */
LIBC_PROBE (setjmp, 3, 4@%r2, -4@%r3, 4@%r14)
#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
std %f4,40(%r2)
std %f6,48(%r2)
#if 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
.L0: al %r1,.L1 - .L0(0,%r1) /* get address of global offset table */
/* get address of __sigjmp_save from got */
l %r1,__sigjmp_save@GOT(%r1)
br %r1
.L1: .long _GLOBAL_OFFSET_TABLE_ - .L0
#else
basr %r1,0
.L0: l %r1,.L1-.L0(0,%r1) /* load address of __sigjmp_save */
br %r1 /* tail-call __sigjmp_save */
.L1: .long __sigjmp_save
#endif
END (__sigsetjmp)
#if NEED_COMPAT_SYMBOLS
strong_alias (__sigsetjmp, __GI___sigsetjmp)
#else
libc_hidden_def (__sigsetjmp)
#endif
#if NEED_COMPAT_SYMBOLS
/* In glibc release 2.19 new versions of setjmp-functions were introduced,
but were reverted before 2.20. Thus both versions are the same function. */
# undef setjmp
# undef _setjmp
# undef __sigsetjmp
strong_alias (__v1setjmp, __v2setjmp);
versioned_symbol (libc, __v1setjmp, setjmp, GLIBC_2_0);
compat_symbol (libc, __v2setjmp, setjmp, GLIBC_2_19);
strong_alias (__v1_setjmp, __v2_setjmp);
versioned_symbol (libc, __v1_setjmp, _setjmp, GLIBC_2_0);
compat_symbol (libc, __v2_setjmp, _setjmp, GLIBC_2_19);
strong_alias (__v1__sigsetjmp, __v2__sigsetjmp);
versioned_symbol (libc, __v1__sigsetjmp, __sigsetjmp, GLIBC_2_0);
compat_symbol (libc, __v2__sigsetjmp, __sigsetjmp, GLIBC_2_19);
#endif /* NEED_COMPAT_SYMBOLS */
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