libelf_fsize.m4 revision 4484
14484Sbinkertn@umich.edu/*- 24484Sbinkertn@umich.edu * Copyright (c) 2006 Joseph Koshy 34484Sbinkertn@umich.edu * All rights reserved. 44484Sbinkertn@umich.edu * 54484Sbinkertn@umich.edu * Redistribution and use in source and binary forms, with or without 64484Sbinkertn@umich.edu * modification, are permitted provided that the following conditions 74484Sbinkertn@umich.edu * are met: 84484Sbinkertn@umich.edu * 1. Redistributions of source code must retain the above copyright 94484Sbinkertn@umich.edu * notice, this list of conditions and the following disclaimer. 104484Sbinkertn@umich.edu * 2. Redistributions in binary form must reproduce the above copyright 114484Sbinkertn@umich.edu * notice, this list of conditions and the following disclaimer in the 124484Sbinkertn@umich.edu * documentation and/or other materials provided with the distribution. 134484Sbinkertn@umich.edu * 144484Sbinkertn@umich.edu * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 154484Sbinkertn@umich.edu * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 164484Sbinkertn@umich.edu * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 174484Sbinkertn@umich.edu * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 184484Sbinkertn@umich.edu * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 194484Sbinkertn@umich.edu * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 204484Sbinkertn@umich.edu * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 214484Sbinkertn@umich.edu * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 224484Sbinkertn@umich.edu * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 234484Sbinkertn@umich.edu * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 244484Sbinkertn@umich.edu * SUCH DAMAGE. 254484Sbinkertn@umich.edu * 264484Sbinkertn@umich.edu * $FreeBSD: src/lib/libelf/libelf_fsize.m4,v 1.2 2006/12/18 05:40:01 jkoshy Exp $ 274484Sbinkertn@umich.edu */ 284484Sbinkertn@umich.edu 294484Sbinkertn@umich.edu#include "libelf.h" 304484Sbinkertn@umich.edu#include "_libelf.h" 314484Sbinkertn@umich.edu 324484Sbinkertn@umich.edu/* 334484Sbinkertn@umich.edu * Create an array of file sizes from the elf_type definitions 344484Sbinkertn@umich.edu */ 354484Sbinkertn@umich.edu 364484Sbinkertn@umich.edudivert(-1) 374484Sbinkertn@umich.eduinclude(SRCDIR`/elf_types.m4') 384484Sbinkertn@umich.edu 394484Sbinkertn@umich.edu/* 404484Sbinkertn@umich.edu * Translations from structure definitions to the size of their file 414484Sbinkertn@umich.edu * representations. 424484Sbinkertn@umich.edu */ 434484Sbinkertn@umich.edu 444484Sbinkertn@umich.edu/* `Basic' types */ 454484Sbinkertn@umich.edudefine(`BYTE_SIZE', 1) 464484Sbinkertn@umich.edudefine(`IDENT_SIZE', `EI_NIDENT') 474484Sbinkertn@umich.edudefine(`NOTE_SIZE', 1) /* Elf_Note structures have variable length. */ 484484Sbinkertn@umich.edu 494484Sbinkertn@umich.edu/* Currently unimplemented types */ 504484Sbinkertn@umich.edudefine(`MOVEP_SIZE', 0) 514484Sbinkertn@umich.edu 524484Sbinkertn@umich.edu/* Overrides for 32 bit types that do not exist */ 534484Sbinkertn@umich.edudefine(`XWORD_SIZE32', 0) 544484Sbinkertn@umich.edudefine(`SXWORD_SIZE32', 0) 554484Sbinkertn@umich.edu 564484Sbinkertn@umich.edu/* 574484Sbinkertn@umich.edu * FSZ{32,64} define the sizes of 32 and 64 bit file structures respectively. 584484Sbinkertn@umich.edu */ 594484Sbinkertn@umich.edu 604484Sbinkertn@umich.edudefine(`FSZ32',`_FSZ32($1_DEF)') 614484Sbinkertn@umich.edudefine(`_FSZ32', 624484Sbinkertn@umich.edu `ifelse($#,1,0, 634484Sbinkertn@umich.edu `_BSZ32($1)+_FSZ32(shift($@))')') 644484Sbinkertn@umich.edudefine(`_BSZ32',`$2_SIZE32') 654484Sbinkertn@umich.edu 664484Sbinkertn@umich.edudefine(`FSZ64',`_FSZ64($1_DEF)') 674484Sbinkertn@umich.edudefine(`_FSZ64', 684484Sbinkertn@umich.edu `ifelse($#,1,0, 694484Sbinkertn@umich.edu `_BSZ64($1)+_FSZ64(shift($@))')') 704484Sbinkertn@umich.edudefine(`_BSZ64',`$2_SIZE64') 714484Sbinkertn@umich.edu 724484Sbinkertn@umich.edu/* 734484Sbinkertn@umich.edu * DEFINE_ELF_FSIZES(TYPE,NAME) 744484Sbinkertn@umich.edu * 754484Sbinkertn@umich.edu * Shorthand for defining for 32 and 64 versions 764484Sbinkertn@umich.edu * of elf type TYPE. 774484Sbinkertn@umich.edu * 784484Sbinkertn@umich.edu * If TYPE`'_SIZE is defined, use its value for both 32 bit and 64 bit 794484Sbinkertn@umich.edu * sizes. 804484Sbinkertn@umich.edu * 814484Sbinkertn@umich.edu * Otherwise, look for a explicit 32/64 bit size definition for TYPE, 824484Sbinkertn@umich.edu * TYPE`'_SIZE32 or TYPE`'_SIZE64. If this definition is present, there 834484Sbinkertn@umich.edu * is nothing further to do. 844484Sbinkertn@umich.edu * 854484Sbinkertn@umich.edu * Otherwise, if an Elf{32,64}_`'NAME structure definition is known, 864484Sbinkertn@umich.edu * compute an expression that adds up the sizes of the structure's 874484Sbinkertn@umich.edu * constituents. 884484Sbinkertn@umich.edu * 894484Sbinkertn@umich.edu * If such a structure definition is not known, treat TYPE as a primitive 904484Sbinkertn@umich.edu * (i.e., integral) type and use sizeof(Elf{32,64}_`'NAME) to get its 914484Sbinkertn@umich.edu * file representation size. 924484Sbinkertn@umich.edu */ 934484Sbinkertn@umich.edu 944484Sbinkertn@umich.edudefine(`DEFINE_ELF_FSIZE', 954484Sbinkertn@umich.edu `ifdef($1`_SIZE', 964484Sbinkertn@umich.edu `define($1_SIZE32,$1_SIZE) 974484Sbinkertn@umich.edu define($1_SIZE64,$1_SIZE)', 984484Sbinkertn@umich.edu `ifdef($1`_SIZE32',`', 994484Sbinkertn@umich.edu `ifdef(`Elf32_'$2`_DEF', 1004484Sbinkertn@umich.edu `define($1_SIZE32,FSZ32(Elf32_$2))', 1014484Sbinkertn@umich.edu `define($1_SIZE32,`sizeof(Elf32_'$2`)')')') 1024484Sbinkertn@umich.edu ifdef($1`_SIZE64',`', 1034484Sbinkertn@umich.edu `ifdef(`Elf64_'$2`_DEF', 1044484Sbinkertn@umich.edu `define($1_SIZE64,FSZ64(Elf64_$2))', 1054484Sbinkertn@umich.edu `define($1_SIZE64,`sizeof(Elf64_'$2`)')')')')') 1064484Sbinkertn@umich.edu 1074484Sbinkertn@umich.edudefine(`DEFINE_ELF_FSIZES', 1084484Sbinkertn@umich.edu `ifelse($#,1,`', 1094484Sbinkertn@umich.edu `DEFINE_ELF_FSIZE($1) 1104484Sbinkertn@umich.edu DEFINE_ELF_FSIZES(shift($@))')') 1114484Sbinkertn@umich.edu 1124484Sbinkertn@umich.eduDEFINE_ELF_FSIZES(ELF_TYPE_LIST) 1134484Sbinkertn@umich.eduDEFINE_ELF_FSIZE(`IDENT',`') # `IDENT' is a pseudo type 1144484Sbinkertn@umich.edu 1154484Sbinkertn@umich.edudefine(`FSIZE', 1164484Sbinkertn@umich.edu `[ELF_T_$1] = { .fsz32 = $1_SIZE32, .fsz64 = $1_SIZE64 },') 1174484Sbinkertn@umich.edudefine(`FSIZES', 1184484Sbinkertn@umich.edu `ifelse($#,1,`', 1194484Sbinkertn@umich.edu `FSIZE($1) 1204484Sbinkertn@umich.eduFSIZES(shift($@))')') 1214484Sbinkertn@umich.edu 1224484Sbinkertn@umich.edudivert(0) 1234484Sbinkertn@umich.edu 1244484Sbinkertn@umich.edustruct fsize { 1254484Sbinkertn@umich.edu size_t fsz32; 1264484Sbinkertn@umich.edu size_t fsz64; 1274484Sbinkertn@umich.edu}; 1284484Sbinkertn@umich.edu 1294484Sbinkertn@umich.edustatic struct fsize fsize[ELF_T_NUM] = { 1304484Sbinkertn@umich.eduFSIZES(ELF_TYPE_LIST) 1314484Sbinkertn@umich.edu}; 1324484Sbinkertn@umich.edu 1334484Sbinkertn@umich.edusize_t 1344484Sbinkertn@umich.edu_libelf_fsize(Elf_Type t, int ec, unsigned int v, size_t c) 1354484Sbinkertn@umich.edu{ 1364484Sbinkertn@umich.edu size_t sz; 1374484Sbinkertn@umich.edu 1384484Sbinkertn@umich.edu sz = 0; 1394484Sbinkertn@umich.edu if (v != EV_CURRENT) 1404484Sbinkertn@umich.edu LIBELF_SET_ERROR(VERSION, 0); 1414484Sbinkertn@umich.edu else if ((int) t < ELF_T_FIRST || t > ELF_T_LAST) 1424484Sbinkertn@umich.edu LIBELF_SET_ERROR(ARGUMENT, 0); 1434484Sbinkertn@umich.edu else { 1444484Sbinkertn@umich.edu sz = ec == ELFCLASS64 ? fsize[t].fsz64 : fsize[t].fsz32; 1454484Sbinkertn@umich.edu if (sz == 0) 1464484Sbinkertn@umich.edu LIBELF_SET_ERROR(UNIMPL, 0); 1474484Sbinkertn@umich.edu } 1484484Sbinkertn@umich.edu 1494484Sbinkertn@umich.edu return (sz*c); 1504484Sbinkertn@umich.edu} 1514484Sbinkertn@umich.edu 152