elf32.h revision 4484
14484Sbinkertn@umich.edu/*- 24484Sbinkertn@umich.edu * Copyright (c) 1996-1998 John D. Polstra. 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/sys/sys/elf32.h,v 1.13 2006/10/17 05:43:30 jkoshy Exp $ 274484Sbinkertn@umich.edu */ 284484Sbinkertn@umich.edu 294484Sbinkertn@umich.edu#ifndef _SYS_ELF32_H_ 304484Sbinkertn@umich.edu#define _SYS_ELF32_H_ 1 314484Sbinkertn@umich.edu 324484Sbinkertn@umich.edu#include "elf_common.h" 334484Sbinkertn@umich.edu 344484Sbinkertn@umich.edu/* 354484Sbinkertn@umich.edu * ELF definitions common to all 32-bit architectures. 364484Sbinkertn@umich.edu */ 374484Sbinkertn@umich.edu 384484Sbinkertn@umich.edutypedef uint32_t Elf32_Addr; 394484Sbinkertn@umich.edutypedef uint16_t Elf32_Half; 404484Sbinkertn@umich.edutypedef uint32_t Elf32_Off; 414484Sbinkertn@umich.edutypedef int32_t Elf32_Sword; 424484Sbinkertn@umich.edutypedef uint32_t Elf32_Word; 434484Sbinkertn@umich.edutypedef uint64_t Elf32_Lword; 444484Sbinkertn@umich.edu 454484Sbinkertn@umich.edutypedef Elf32_Word Elf32_Hashelt; 464484Sbinkertn@umich.edu 474484Sbinkertn@umich.edu/* Non-standard class-dependent datatype used for abstraction. */ 484484Sbinkertn@umich.edutypedef Elf32_Word Elf32_Size; 494484Sbinkertn@umich.edutypedef Elf32_Sword Elf32_Ssize; 504484Sbinkertn@umich.edu 514484Sbinkertn@umich.edu/* 524484Sbinkertn@umich.edu * ELF header. 534484Sbinkertn@umich.edu */ 544484Sbinkertn@umich.edu 554484Sbinkertn@umich.edutypedef struct { 564484Sbinkertn@umich.edu unsigned char e_ident[EI_NIDENT]; /* File identification. */ 574484Sbinkertn@umich.edu Elf32_Half e_type; /* File type. */ 584484Sbinkertn@umich.edu Elf32_Half e_machine; /* Machine architecture. */ 594484Sbinkertn@umich.edu Elf32_Word e_version; /* ELF format version. */ 604484Sbinkertn@umich.edu Elf32_Addr e_entry; /* Entry point. */ 614484Sbinkertn@umich.edu Elf32_Off e_phoff; /* Program header file offset. */ 624484Sbinkertn@umich.edu Elf32_Off e_shoff; /* Section header file offset. */ 634484Sbinkertn@umich.edu Elf32_Word e_flags; /* Architecture-specific flags. */ 644484Sbinkertn@umich.edu Elf32_Half e_ehsize; /* Size of ELF header in bytes. */ 654484Sbinkertn@umich.edu Elf32_Half e_phentsize; /* Size of program header entry. */ 664484Sbinkertn@umich.edu Elf32_Half e_phnum; /* Number of program header entries. */ 674484Sbinkertn@umich.edu Elf32_Half e_shentsize; /* Size of section header entry. */ 684484Sbinkertn@umich.edu Elf32_Half e_shnum; /* Number of section header entries. */ 694484Sbinkertn@umich.edu Elf32_Half e_shstrndx; /* Section name strings section. */ 704484Sbinkertn@umich.edu} Elf32_Ehdr; 714484Sbinkertn@umich.edu 724484Sbinkertn@umich.edu/* 734484Sbinkertn@umich.edu * Section header. 744484Sbinkertn@umich.edu */ 754484Sbinkertn@umich.edu 764484Sbinkertn@umich.edutypedef struct { 774484Sbinkertn@umich.edu Elf32_Word sh_name; /* Section name (index into the 784484Sbinkertn@umich.edu section header string table). */ 794484Sbinkertn@umich.edu Elf32_Word sh_type; /* Section type. */ 804484Sbinkertn@umich.edu Elf32_Word sh_flags; /* Section flags. */ 814484Sbinkertn@umich.edu Elf32_Addr sh_addr; /* Address in memory image. */ 824484Sbinkertn@umich.edu Elf32_Off sh_offset; /* Offset in file. */ 834484Sbinkertn@umich.edu Elf32_Word sh_size; /* Size in bytes. */ 844484Sbinkertn@umich.edu Elf32_Word sh_link; /* Index of a related section. */ 854484Sbinkertn@umich.edu Elf32_Word sh_info; /* Depends on section type. */ 864484Sbinkertn@umich.edu Elf32_Word sh_addralign; /* Alignment in bytes. */ 874484Sbinkertn@umich.edu Elf32_Word sh_entsize; /* Size of each entry in section. */ 884484Sbinkertn@umich.edu} Elf32_Shdr; 894484Sbinkertn@umich.edu 904484Sbinkertn@umich.edu/* 914484Sbinkertn@umich.edu * Program header. 924484Sbinkertn@umich.edu */ 934484Sbinkertn@umich.edu 944484Sbinkertn@umich.edutypedef struct { 954484Sbinkertn@umich.edu Elf32_Word p_type; /* Entry type. */ 964484Sbinkertn@umich.edu Elf32_Off p_offset; /* File offset of contents. */ 974484Sbinkertn@umich.edu Elf32_Addr p_vaddr; /* Virtual address in memory image. */ 984484Sbinkertn@umich.edu Elf32_Addr p_paddr; /* Physical address (not used). */ 994484Sbinkertn@umich.edu Elf32_Word p_filesz; /* Size of contents in file. */ 1004484Sbinkertn@umich.edu Elf32_Word p_memsz; /* Size of contents in memory. */ 1014484Sbinkertn@umich.edu Elf32_Word p_flags; /* Access permission flags. */ 1024484Sbinkertn@umich.edu Elf32_Word p_align; /* Alignment in memory and file. */ 1034484Sbinkertn@umich.edu} Elf32_Phdr; 1044484Sbinkertn@umich.edu 1054484Sbinkertn@umich.edu/* 1064484Sbinkertn@umich.edu * Dynamic structure. The ".dynamic" section contains an array of them. 1074484Sbinkertn@umich.edu */ 1084484Sbinkertn@umich.edu 1094484Sbinkertn@umich.edutypedef struct { 1104484Sbinkertn@umich.edu Elf32_Sword d_tag; /* Entry type. */ 1114484Sbinkertn@umich.edu union { 1124484Sbinkertn@umich.edu Elf32_Word d_val; /* Integer value. */ 1134484Sbinkertn@umich.edu Elf32_Addr d_ptr; /* Address value. */ 1144484Sbinkertn@umich.edu } d_un; 1154484Sbinkertn@umich.edu} Elf32_Dyn; 1164484Sbinkertn@umich.edu 1174484Sbinkertn@umich.edu/* 1184484Sbinkertn@umich.edu * Relocation entries. 1194484Sbinkertn@umich.edu */ 1204484Sbinkertn@umich.edu 1214484Sbinkertn@umich.edu/* Relocations that don't need an addend field. */ 1224484Sbinkertn@umich.edutypedef struct { 1234484Sbinkertn@umich.edu Elf32_Addr r_offset; /* Location to be relocated. */ 1244484Sbinkertn@umich.edu Elf32_Word r_info; /* Relocation type and symbol index. */ 1254484Sbinkertn@umich.edu} Elf32_Rel; 1264484Sbinkertn@umich.edu 1274484Sbinkertn@umich.edu/* Relocations that need an addend field. */ 1284484Sbinkertn@umich.edutypedef struct { 1294484Sbinkertn@umich.edu Elf32_Addr r_offset; /* Location to be relocated. */ 1304484Sbinkertn@umich.edu Elf32_Word r_info; /* Relocation type and symbol index. */ 1314484Sbinkertn@umich.edu Elf32_Sword r_addend; /* Addend. */ 1324484Sbinkertn@umich.edu} Elf32_Rela; 1334484Sbinkertn@umich.edu 1344484Sbinkertn@umich.edu/* Macros for accessing the fields of r_info. */ 1354484Sbinkertn@umich.edu#define ELF32_R_SYM(info) ((info) >> 8) 1364484Sbinkertn@umich.edu#define ELF32_R_TYPE(info) ((unsigned char)(info)) 1374484Sbinkertn@umich.edu 1384484Sbinkertn@umich.edu/* Macro for constructing r_info from field values. */ 1394484Sbinkertn@umich.edu#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type)) 1404484Sbinkertn@umich.edu 1414484Sbinkertn@umich.edu/* 1424484Sbinkertn@umich.edu * Note entry header 1434484Sbinkertn@umich.edu */ 1444484Sbinkertn@umich.edutypedef Elf_Note Elf32_Nhdr; 1454484Sbinkertn@umich.edu 1464484Sbinkertn@umich.edu/* 1474484Sbinkertn@umich.edu * Move entry 1484484Sbinkertn@umich.edu */ 1494484Sbinkertn@umich.edutypedef struct { 1504484Sbinkertn@umich.edu Elf32_Lword m_value; /* symbol value */ 1514484Sbinkertn@umich.edu Elf32_Word m_info; /* size + index */ 1524484Sbinkertn@umich.edu Elf32_Word m_poffset; /* symbol offset */ 1534484Sbinkertn@umich.edu Elf32_Half m_repeat; /* repeat count */ 1544484Sbinkertn@umich.edu Elf32_Half m_stride; /* stride info */ 1554484Sbinkertn@umich.edu} Elf32_Move; 1564484Sbinkertn@umich.edu 1574484Sbinkertn@umich.edu/* 1584484Sbinkertn@umich.edu * The macros compose and decompose values for Move.r_info 1594484Sbinkertn@umich.edu * 1604484Sbinkertn@umich.edu * sym = ELF32_M_SYM(M.m_info) 1614484Sbinkertn@umich.edu * size = ELF32_M_SIZE(M.m_info) 1624484Sbinkertn@umich.edu * M.m_info = ELF32_M_INFO(sym, size) 1634484Sbinkertn@umich.edu */ 1644484Sbinkertn@umich.edu#define ELF32_M_SYM(info) ((info)>>8) 1654484Sbinkertn@umich.edu#define ELF32_M_SIZE(info) ((unsigned char)(info)) 1664484Sbinkertn@umich.edu#define ELF32_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size)) 1674484Sbinkertn@umich.edu 1684484Sbinkertn@umich.edu/* 1694484Sbinkertn@umich.edu * Hardware/Software capabilities entry 1704484Sbinkertn@umich.edu */ 1714484Sbinkertn@umich.edutypedef struct { 1724484Sbinkertn@umich.edu Elf32_Word c_tag; /* how to interpret value */ 1734484Sbinkertn@umich.edu union { 1744484Sbinkertn@umich.edu Elf32_Word c_val; 1754484Sbinkertn@umich.edu Elf32_Addr c_ptr; 1764484Sbinkertn@umich.edu } c_un; 1774484Sbinkertn@umich.edu} Elf32_Cap; 1784484Sbinkertn@umich.edu 1794484Sbinkertn@umich.edu/* 1804484Sbinkertn@umich.edu * Symbol table entries. 1814484Sbinkertn@umich.edu */ 1824484Sbinkertn@umich.edu 1834484Sbinkertn@umich.edutypedef struct { 1844484Sbinkertn@umich.edu Elf32_Word st_name; /* String table index of name. */ 1854484Sbinkertn@umich.edu Elf32_Addr st_value; /* Symbol value. */ 1864484Sbinkertn@umich.edu Elf32_Word st_size; /* Size of associated object. */ 1874484Sbinkertn@umich.edu unsigned char st_info; /* Type and binding information. */ 1884484Sbinkertn@umich.edu unsigned char st_other; /* Reserved (not used). */ 1894484Sbinkertn@umich.edu Elf32_Half st_shndx; /* Section index of symbol. */ 1904484Sbinkertn@umich.edu} Elf32_Sym; 1914484Sbinkertn@umich.edu 1924484Sbinkertn@umich.edu/* Macros for accessing the fields of st_info. */ 1934484Sbinkertn@umich.edu#define ELF32_ST_BIND(info) ((info) >> 4) 1944484Sbinkertn@umich.edu#define ELF32_ST_TYPE(info) ((info) & 0xf) 1954484Sbinkertn@umich.edu 1964484Sbinkertn@umich.edu/* Macro for constructing st_info from field values. */ 1974484Sbinkertn@umich.edu#define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 1984484Sbinkertn@umich.edu 1994484Sbinkertn@umich.edu/* Macro for accessing the fields of st_other. */ 2004484Sbinkertn@umich.edu#define ELF32_ST_VISIBILITY(oth) ((oth) & 0x3) 2014484Sbinkertn@umich.edu 2024484Sbinkertn@umich.edu/* Structures used by Sun & GNU symbol versioning. */ 2034484Sbinkertn@umich.edutypedef struct 2044484Sbinkertn@umich.edu{ 2054484Sbinkertn@umich.edu Elf32_Half vd_version; 2064484Sbinkertn@umich.edu Elf32_Half vd_flags; 2074484Sbinkertn@umich.edu Elf32_Half vd_ndx; 2084484Sbinkertn@umich.edu Elf32_Half vd_cnt; 2094484Sbinkertn@umich.edu Elf32_Word vd_hash; 2104484Sbinkertn@umich.edu Elf32_Word vd_aux; 2114484Sbinkertn@umich.edu Elf32_Word vd_next; 2124484Sbinkertn@umich.edu} Elf32_Verdef; 2134484Sbinkertn@umich.edu 2144484Sbinkertn@umich.edutypedef struct 2154484Sbinkertn@umich.edu{ 2164484Sbinkertn@umich.edu Elf32_Word vda_name; 2174484Sbinkertn@umich.edu Elf32_Word vda_next; 2184484Sbinkertn@umich.edu} Elf32_Verdaux; 2194484Sbinkertn@umich.edu 2204484Sbinkertn@umich.edutypedef struct 2214484Sbinkertn@umich.edu{ 2224484Sbinkertn@umich.edu Elf32_Half vn_version; 2234484Sbinkertn@umich.edu Elf32_Half vn_cnt; 2244484Sbinkertn@umich.edu Elf32_Word vn_file; 2254484Sbinkertn@umich.edu Elf32_Word vn_aux; 2264484Sbinkertn@umich.edu Elf32_Word vn_next; 2274484Sbinkertn@umich.edu} Elf32_Verneed; 2284484Sbinkertn@umich.edu 2294484Sbinkertn@umich.edutypedef struct 2304484Sbinkertn@umich.edu{ 2314484Sbinkertn@umich.edu Elf32_Word vna_hash; 2324484Sbinkertn@umich.edu Elf32_Half vna_flags; 2334484Sbinkertn@umich.edu Elf32_Half vna_other; 2344484Sbinkertn@umich.edu Elf32_Word vna_name; 2354484Sbinkertn@umich.edu Elf32_Word vna_next; 2364484Sbinkertn@umich.edu} Elf32_Vernaux; 2374484Sbinkertn@umich.edu 2384484Sbinkertn@umich.edutypedef Elf32_Half Elf32_Versym; 2394484Sbinkertn@umich.edu 2404484Sbinkertn@umich.edutypedef struct { 2414484Sbinkertn@umich.edu Elf32_Half si_boundto; /* direct bindings - symbol bound to */ 2424484Sbinkertn@umich.edu Elf32_Half si_flags; /* per symbol flags */ 2434484Sbinkertn@umich.edu} Elf32_Syminfo; 2444484Sbinkertn@umich.edu 2454484Sbinkertn@umich.edu#endif /* !_SYS_ELF32_H_ */ 246