/* Copyright (C) 2003-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.

   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 <setjmp.h>

#include <jmpbuf-offsets.h>

#include <stdint.h>

#include <unwind.h>

#include <bits/wordsize.h>

#include <sysdep.h>

/* Test if longjmp to JMPBUF would unwind the frame

   containing a local variable at ADDRESS.  */

#define _JMPBUF_UNWINDS(jmpbuf, address, demangle)			\

  ((void *) (address) < (void *) demangle ((jmpbuf)->__gregs[__JB_GPR15]))

/* On s390{,x}, CFA is always 96 (resp. 160) bytes above actual

   %r15.  */

#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \

  _JMPBUF_UNWINDS_ADJ (_jmpbuf,					\

		       (void *) (_Unwind_GetCFA (_context)	\

				 - 32 - 2 * __WORDSIZE), _adj)

static inline uintptr_t __attribute__ ((unused))

_jmpbuf_sp (__jmp_buf regs)

{

  void *sp = (void *) (uintptr_t) regs[0].__gregs[__JB_GPR15];

#ifdef PTR_DEMANGLE

  PTR_DEMANGLE (sp);

#endif

  return (uintptr_t) sp;

}

#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \

  ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj))

/* We use the normal longjmp for unwinding.  */

#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)