/* setjmp for 64 bit S/390, ELF version.

   Copyright (C) 2001-2018 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)

	lghi   %r3,1                /* Second argument of one.  */

	j      .Linternal_sigsetjmp /* Branch relativ to __sigsetjmp.  */

END (setjmp)

	/* Binary compatibility entry point.  */

ENTRY(_setjmp)

	slgr   %r3,%r3              /* 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)

	slgr   %r3,%r3              /* Second argument of zero.  */

	j      .Linternal_sigsetjmp /* Branch relativ to __sigsetjmp.  */

END (__setjmp)

ENTRY(__sigsetjmp)

.Linternal_sigsetjmp:

	/* setjmp probe expects sig/setjmp first argument (8@%r2), second

	   argument (-8@%r3) and target address (8@%r14).  */

	LIBC_PROBE (setjmp, 3, 8@%r2, -4@%r3, 8@%r14)

#ifdef PTR_MANGLE

	stmg   %r6,%r13,0(%r2)      /* Store registers in jmp_buf.  */

	lgr    %r4,%r14

	lgr    %r5,%r15

	PTR_MANGLE (%r4, %r1)

	PTR_MANGLE2 (%r5, %r1)

	stmg   %r4,%r5,64(%r2)

#else

	stmg   %r6,%r15,0(%r2)      /* Store registers in jmp_buf.  */

#endif

	std    %f8,80(%r2)

	std    %f9,88(%r2)

	std    %f10,96(%r2)

	std    %f11,104(%r2)

	std    %f12,112(%r2)

	std    %f13,120(%r2)

	std    %f14,128(%r2)

	std    %f15,136(%r2)

#if IS_IN (rtld)

	/* In ld.so we never save the signal mask.  */

	lghi   %r2,0

	br     %r14

#elif defined PIC

	jg     __sigjmp_save@PLT    /* Branch to PLT of __sigsetjmp.  */

#else

	jg     __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 */