160 lines
4.3 KiB
Plaintext
160 lines
4.3 KiB
Plaintext
/*-
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* Copyright (c) 2006,2008-2011 Joseph Koshy
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <libelf.h>
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#include "_libelf.h"
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ELFTC_VCSID("$Id: libelf_fsize.m4 2225 2011-11-26 18:55:54Z jkoshy $");
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/* WARNING: GENERATED FROM __file__. */
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/*
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* Create an array of file sizes from the elf_type definitions
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*/
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divert(-1)
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include(SRCDIR`/elf_types.m4')
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/*
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* Translations from structure definitions to the size of their file
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* representations.
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*/
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/* `Basic' types. */
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define(`BYTE_SIZE', 1)
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define(`IDENT_SIZE', `EI_NIDENT')
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/* Types that have variable length. */
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define(`GNUHASH_SIZE', 1)
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define(`NOTE_SIZE', 1)
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define(`VDEF_SIZE', 1)
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define(`VNEED_SIZE', 1)
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/* Currently unimplemented types. */
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define(`MOVEP_SIZE', 0)
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/* Overrides for 32 bit types that do not exist. */
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define(`XWORD_SIZE32', 0)
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define(`SXWORD_SIZE32', 0)
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/*
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* FSZ{32,64} define the sizes of 32 and 64 bit file structures respectively.
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*/
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define(`FSZ32',`_FSZ32($1_DEF)')
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define(`_FSZ32',
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`ifelse($#,1,0,
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`_BSZ32($1)+_FSZ32(shift($@))')')
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define(`_BSZ32',`$2_SIZE32')
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define(`FSZ64',`_FSZ64($1_DEF)')
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define(`_FSZ64',
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`ifelse($#,1,0,
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`_BSZ64($1)+_FSZ64(shift($@))')')
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define(`_BSZ64',`$2_SIZE64')
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/*
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* DEFINE_ELF_FSIZES(TYPE,NAME)
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*
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* Shorthand for defining for 32 and 64 versions
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* of elf type TYPE.
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*
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* If TYPE`'_SIZE is defined, use its value for both 32 bit and 64 bit
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* sizes.
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*
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* Otherwise, look for a explicit 32/64 bit size definition for TYPE,
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* TYPE`'_SIZE32 or TYPE`'_SIZE64. If this definition is present, there
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* is nothing further to do.
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*
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* Otherwise, if an Elf{32,64}_`'NAME structure definition is known,
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* compute an expression that adds up the sizes of the structure's
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* constituents.
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*
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* If such a structure definition is not known, treat TYPE as a primitive
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* (i.e., integral) type and use sizeof(Elf{32,64}_`'NAME) to get its
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* file representation size.
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*/
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define(`DEFINE_ELF_FSIZE',
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`ifdef($1`_SIZE',
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`define($1_SIZE32,$1_SIZE)
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define($1_SIZE64,$1_SIZE)',
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`ifdef($1`_SIZE32',`',
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`ifdef(`Elf32_'$2`_DEF',
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`define($1_SIZE32,FSZ32(Elf32_$2))',
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`define($1_SIZE32,`sizeof(Elf32_'$2`)')')')
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ifdef($1`_SIZE64',`',
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`ifdef(`Elf64_'$2`_DEF',
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`define($1_SIZE64,FSZ64(Elf64_$2))',
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`define($1_SIZE64,`sizeof(Elf64_'$2`)')')')')')
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define(`DEFINE_ELF_FSIZES',
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`ifelse($#,1,`',
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`DEFINE_ELF_FSIZE($1)
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DEFINE_ELF_FSIZES(shift($@))')')
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DEFINE_ELF_FSIZES(ELF_TYPE_LIST)
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DEFINE_ELF_FSIZE(`IDENT',`') # `IDENT' is a pseudo type
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define(`FSIZE',
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`[ELF_T_$1] = { .fsz32 = $1_SIZE32, .fsz64 = $1_SIZE64 },
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')
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define(`FSIZES',
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`ifelse($#,1,`',
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`FSIZE($1)
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FSIZES(shift($@))')')
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divert(0)
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struct fsize {
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size_t fsz32;
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size_t fsz64;
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};
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static struct fsize fsize[ELF_T_NUM] = {
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FSIZES(ELF_TYPE_LIST)
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};
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size_t
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_libelf_fsize(Elf_Type t, int ec, unsigned int v, size_t c)
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{
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size_t sz;
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sz = 0;
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if (v != EV_CURRENT)
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LIBELF_SET_ERROR(VERSION, 0);
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else if ((int) t < ELF_T_FIRST || t > ELF_T_LAST)
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LIBELF_SET_ERROR(ARGUMENT, 0);
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else {
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sz = ec == ELFCLASS64 ? fsize[t].fsz64 : fsize[t].fsz32;
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if (sz == 0)
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LIBELF_SET_ERROR(UNIMPL, 0);
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}
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return (sz*c);
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}
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