/* setjmp for s390, ELF version.

   Copyright (C) 2000-2018 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)

	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 */