external/bsd/libelf/dist/libelf.c

   1 /*      $NetBSD: libelf.c,v 1.5 2009/12/20 23:23:46 thorpej Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2006 Joseph Koshy
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 /* __FBSDID("$FreeBSD: src/lib/libelf/libelf.c,v 1.1.10.1.2.1 2009/10/25 01:10:29 kensmith Exp $"); */
  31
  32 #include <sys/param.h>
  33
  34 #include <libelf.h>
  35
  36 #include "_libelf.h"
  37
  38 struct _libelf_globals _libelf = {
  39         .libelf_error           = 0,
  40         .libelf_fillchar        = 0,
  41         .libelf_version         = EV_NONE
  42 };
  43
  44 unsigned int
  45 _libelf_host_byteorder(void)
  46 {
  47         static union {
  48                 uint32_t        val;
  49                 uint8_t         bytes[4];
  50         } byte_order_check = {
  51                 .val    =       0xdeadbeef,
  52         };
  53
  54         return (byte_order_check.bytes[0] == 0xef ? ELFDATA2LSB : ELFDATA2MSB);
  55 }
  56
  57 #if defined(LIBELF_TEST_HOOKS)
  58 int
  59 _libelf_get_elf_class(Elf *elf)
  60 {
  61         return elf->e_class;
  62 }
  63
  64 void
  65 _libelf_set_elf_class(Elf *elf, int c)
  66 {
  67         elf->e_class = c;
  68 }
  69 #endif  /* LIBELF_TEST_HOOKS */