1  /*-
  2   * Copyright (c) 2006,2008-2011 Joseph Koshy
  3   * All rights reserved.
  4   *
  5   * Redistribution and use in source and binary forms, with or without
  6   * modification, are permitted provided that the following conditions
  7   * are met:
  8   * 1. Redistributions of source code must retain the above copyright
  9   *    notice, this list of conditions and the following disclaimer.
 10   * 2. Redistributions in binary form must reproduce the above copyright
 11   *    notice, this list of conditions and the following disclaimer in the
 12   *    documentation and/or other materials provided with the distribution.
 13   *
 14   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 15   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 16   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 17   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 18   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 19   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 20   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 21   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 22   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 23   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 24   * SUCH DAMAGE.
 25   */
 26  
 27  #include <sys/cdefs.h>
 28  
 29  #include <assert.h>
 30  #include <libelf.h>
 31  #include <string.h>
 32  
 33  #include "_libelf.h"
 34  
 35  ELFTC_VCSID("$Id$");
 36  
 37  /* WARNING: GENERATED FROM __file__. */
 38  
 39  struct msize {
 40  	size_t	msz32;
 41  	size_t	msz64;
 42  };
 43  
 44  divert(-1)
 45  include(SRCDIR`/elf_types.m4')
 46  
 47  /*
 48   * ELF types whose memory representations have a variable size.
 49   */
 50  define(BYTE_SIZE,	1)
 51  define(GNUHASH_SIZE,	1)
 52  define(NOTE_SIZE,	1)
 53  define(VDEF_SIZE,	1)
 54  define(VNEED_SIZE,	1)
 55  
 56  /*
 57   * Unimplemented types.
 58   */
 59  define(MOVEP_SIZE,	0)
 60  define(SXWORD_SIZE32,	0)
 61  define(XWORD_SIZE32,	0)
 62  
 63  define(`DEFINE_ELF_MSIZE',
 64    `ifdef($1`_SIZE',
 65      `define($1_SIZE32,$1_SIZE)
 66       define($1_SIZE64,$1_SIZE)',
 67      `ifdef($1`_SIZE32',`',
 68        `define($1_SIZE32,sizeof(Elf32_$2))')
 69       ifdef($1`_SIZE64',`',
 70        `define($1_SIZE64,sizeof(Elf64_$2))')')')
 71  define(`DEFINE_ELF_MSIZES',
 72    `ifelse($#,1,`',
 73      `DEFINE_ELF_MSIZE($1)
 74       DEFINE_ELF_MSIZES(shift($@))')')
 75  
 76  DEFINE_ELF_MSIZES(ELF_TYPE_LIST)
 77  
 78  define(`MSIZE',
 79    `[ELF_T_$1] = { .msz32 = $1_SIZE32, .msz64 = $1_SIZE64 },
 80  ')
 81  define(`MSIZES',
 82    `ifelse($#,1,`',
 83      `MSIZE($1)
 84  MSIZES(shift($@))')')
 85  
 86  divert(0)
 87  
 88  static struct msize msize[ELF_T_NUM] = {
 89  MSIZES(ELF_TYPE_LIST)
 90  };
 91  
 92  size_t
 93  _libelf_msize(Elf_Type t, int elfclass, unsigned int version)
 94  {
 95  	size_t sz;
 96  
 97  	assert(elfclass == ELFCLASS32 || elfclass == ELFCLASS64);
 98  	assert((signed) t >= ELF_T_FIRST && t <= ELF_T_LAST);
 99  
100  	if (version != EV_CURRENT) {
101  		LIBELF_SET_ERROR(VERSION, 0);
102  		return (0);
103  	}
104  
105  	sz = (elfclass == ELFCLASS32) ? msize[t].msz32 : msize[t].msz64;
106  
107  	return (sz);
108  }