ext/libelf/libelf_msize.m4

   1 /*-
   2  * Copyright (c) 2006 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/types.h>
  28
  29 #include <assert.h>
  30 #include <string.h>
  31
  32 #include "elf32.h"
  33 #include "elf64.h"
  34 #include "libelf.h"
  35 #include "_libelf.h"
  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 define(BYTE_SIZE,       1)
  48 define(NOTE_SIZE,       1)
  49
  50 /*
  51  * Unimplemented types.
  52  */
  53 define(MOVEP_SIZE,      0)
  54 define(SXWORD_SIZE32,   0)
  55 define(XWORD_SIZE32,    0)
  56
  57 define(`DEFINE_ELF_MSIZE',
  58   `ifdef($1`_SIZE',
  59     `define($1_SIZE32,$1_SIZE)
  60      define($1_SIZE64,$1_SIZE)',
  61     `ifdef($1`_SIZE32',`',
  62       `define($1_SIZE32,sizeof(Elf32_$2))')
  63      ifdef($1`_SIZE64',`',
  64       `define($1_SIZE64,sizeof(Elf64_$2))')')')
  65 define(`DEFINE_ELF_MSIZES',
  66   `ifelse($#,1,`',
  67     `DEFINE_ELF_MSIZE($1)
  68      DEFINE_ELF_MSIZES(shift($@))')')
  69
  70 DEFINE_ELF_MSIZES(ELF_TYPE_LIST)
  71
  72 define(`MSIZE',
  73   `[ELF_T_$1] = { .msz32 = $1_SIZE32, .msz64 = $1_SIZE64 },')
  74 define(`MSIZES',
  75   `ifelse($#,1,`',
  76     `MSIZE($1)
  77 MSIZES(shift($@))')')
  78
  79 divert(0)
  80
  81 static struct msize msize[ELF_T_NUM] = {
  82 MSIZES(ELF_TYPE_LIST)
  83 };
  84
  85 size_t
  86 _libelf_msize(Elf_Type t, int elfclass, unsigned int version)
  87 {
  88         size_t sz;
  89
  90         assert(elfclass == ELFCLASS32 || elfclass == ELFCLASS64);
  91         assert((signed) t >= ELF_T_FIRST && t <= ELF_T_LAST);
  92
  93         if (version != EV_CURRENT) {
  94                 LIBELF_SET_ERROR(VERSION, 0);
  95                 return (0);
  96         }
  97
  98         sz = (elfclass == ELFCLASS32) ? msize[t].msz32 : msize[t].msz64;
  99
 100         return (sz);
 101 }