/* ELF symbol resolve functions for VDSO objects.

   Copyright (C) 2005-2018 Free Software Foundation, Inc.

   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/>.  */

#ifndef _DL_VDSO_H

#define _DL_VDSO_H	1

#include <assert.h>

#include <ldsodefs.h>

#include <dl-hash.h>

/* Create version number record for lookup.  */

#define PREPARE_VERSION(var, vname, vhash) \

  struct r_found_version var;						      \

  var.name = vname;							      \

  var.hidden = 1;							      \

  var.hash = vhash;							      \

  assert (var.hash == _dl_elf_hash (var.name));				      \

  /* We don't have a specific file where the symbol can be found.  */	      \

  var.filename = NULL

/* Use this for the known version sets defined below, where we

   record their precomputed hash values only once, in this file.  */

#define PREPARE_VERSION_KNOWN(var, vname) \

  PREPARE_VERSION (var, VDSO_NAME_##vname, VDSO_HASH_##vname)

#define VDSO_NAME_LINUX_2_6	"LINUX_2.6"

#define VDSO_HASH_LINUX_2_6	61765110

#define VDSO_NAME_LINUX_2_6_15	"LINUX_2.6.15"

#define VDSO_HASH_LINUX_2_6_15	123718565

#define VDSO_NAME_LINUX_2_6_29	"LINUX_2.6.29"

#define VDSO_HASH_LINUX_2_6_29	123718585

#define VDSO_NAME_LINUX_4_15	"LINUX_4.15"

#define VDSO_HASH_LINUX_4_15	182943605

/* Functions for resolving symbols in the VDSO link map.  */

extern void *_dl_vdso_vsym (const char *name,

			    const struct r_found_version *version)

      attribute_hidden;

#endif /* dl-vdso.h */