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/*-
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* Copyright (c) 1995, 1996 Erik Theisen. 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This is the ELF ABI header file
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* formerly known as "elf_abi.h".
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*/
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#ifndef _SYS_ELF_H_
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#define _SYS_ELF_H_
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#include <sys/cdefs.h> |
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#include <machine/types.h> |
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#include <machine/elf.h> |
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typedef uint8_t Elf_Byte;
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typedef uint32_t Elf32_Addr; /* Unsigned program address */ |
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typedef uint32_t Elf32_Off; /* Unsigned file offset */ |
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typedef int32_t Elf32_Sword; /* Signed large integer */ |
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typedef uint32_t Elf32_Word; /* Unsigned large integer */ |
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typedef uint16_t Elf32_Half; /* Unsigned medium integer */ |
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/* e_ident[] identification indexes */
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#define EI_MAG0 0 /* file ID */ |
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#define EI_MAG1 1 /* file ID */ |
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#define EI_MAG2 2 /* file ID */ |
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#define EI_MAG3 3 /* file ID */ |
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#define EI_CLASS 4 /* file class */ |
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#define EI_DATA 5 /* data encoding */ |
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#define EI_VERSION 6 /* ELF header version */ |
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#define EI_OSABI 7 /* Operating system / ABI identification */ |
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#define EI_ABIVERSION 8 /* ABI version */ |
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#define OLD_EI_BRAND 8 /* Start of architecture identification. */ |
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#define EI_PAD 9 /* Start of padding (per SVR4 ABI). */ |
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#define EI_NIDENT 16 /* Size of e_ident[] */ |
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/* e_ident[] magic number */
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#define ELFMAG0 0x7f /* e_ident[EI_MAG0] */ |
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#define ELFMAG1 'E' /* e_ident[EI_MAG1] */ |
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#define ELFMAG2 'L' /* e_ident[EI_MAG2] */ |
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#define ELFMAG3 'F' /* e_ident[EI_MAG3] */ |
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#define ELFMAG "\177ELF" /* magic */ |
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#define SELFMAG 4 /* size of magic */ |
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/* e_ident[] file class */
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#define ELFCLASSNONE 0 /* invalid */ |
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#define ELFCLASS32 1 /* 32-bit objs */ |
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#define ELFCLASS64 2 /* 64-bit objs */ |
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#define ELFCLASSNUM 3 /* number of classes */ |
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/* e_ident[] data encoding */
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#define ELFDATANONE 0 /* invalid */ |
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#define ELFDATA2LSB 1 /* Little-Endian */ |
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#define ELFDATA2MSB 2 /* Big-Endian */ |
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#define ELFDATANUM 3 /* number of data encode defines */ |
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/* e_ident[] OS ABI */
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#define ELFOSABI_SYSV 0 /* UNIX System V ABI */ |
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#define ELFOSABI_NONE ELFOSABI_SYSV /* symbol used in old spec */ |
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#define ELFOSABI_HPUX 1 /* HP-UX operating system */ |
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#define ELFOSABI_NETBSD 2 /* NetBSD */ |
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#define ELFOSABI_LINUX 3 /* GNU/Linux */ |
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#define ELFOSABI_HURD 4 /* GNU/Hurd */ |
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#define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */ |
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#define ELFOSABI_SOLARIS 6 /* Solaris */ |
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#define ELFOSABI_MONTEREY 7 /* Monterey */ |
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#define ELFOSABI_IRIX 8 /* IRIX */ |
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#define ELFOSABI_FREEBSD 9 /* FreeBSD */ |
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#define ELFOSABI_TRU64 10 /* TRU64 UNIX */ |
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#define ELFOSABI_MODESTO 11 /* Novell Modesto */ |
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#define ELFOSABI_OPENBSD 12 /* OpenBSD */ |
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#define ELFOSABI_ARM 97 /* ARM */ |
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#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ |
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/* e_ident */
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#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
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(ehdr).e_ident[EI_MAG1] == ELFMAG1 && \ |
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(ehdr).e_ident[EI_MAG2] == ELFMAG2 && \ |
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(ehdr).e_ident[EI_MAG3] == ELFMAG3) |
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/* ELF Header */
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typedef struct elfhdr{ |
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unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ |
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Elf32_Half e_type; /* object file type */
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Elf32_Half e_machine; /* machine */
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Elf32_Word e_version; /* object file version */
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Elf32_Addr e_entry; /* virtual entry point */
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Elf32_Off e_phoff; /* program header table offset */
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Elf32_Off e_shoff; /* section header table offset */
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Elf32_Word e_flags; /* processor-specific flags */
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Elf32_Half e_ehsize; /* ELF header size */
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Elf32_Half e_phentsize; /* program header entry size */
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Elf32_Half e_phnum; /* number of program header entries */
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Elf32_Half e_shentsize; /* section header entry size */
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Elf32_Half e_shnum; /* number of section header entries */
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Elf32_Half e_shstrndx; /* section header table's "section
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header string table" entry offset */
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} Elf32_Ehdr; |
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/* e_type */
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#define ET_NONE 0 /* No file type */ |
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#define ET_REL 1 /* relocatable file */ |
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#define ET_EXEC 2 /* executable file */ |
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#define ET_DYN 3 /* shared object file */ |
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#define ET_CORE 4 /* core file */ |
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#define ET_NUM 5 /* number of types */ |
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#define ET_LOPROC 0xff00 /* reserved range for processor */ |
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#define ET_HIPROC 0xffff /* specific e_type */ |
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/* e_machine */
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#define EM_NONE 0 /* No Machine */ |
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#define EM_M32 1 /* AT&T WE 32100 */ |
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#define EM_SPARC 2 /* SPARC */ |
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#define EM_386 3 /* Intel 80386 */ |
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#define EM_68K 4 /* Motorola 68000 */ |
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#define EM_88K 5 /* Motorola 88000 */ |
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#define EM_486 6 /* Intel 80486 - unused? */ |
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#define EM_860 7 /* Intel 80860 */ |
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#define EM_MIPS 8 /* MIPS R3000 Big-Endian only */ |
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/*
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* Don't know if EM_MIPS_RS4_BE,
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* EM_SPARC64, EM_PARISC,
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* or EM_PPC are ABI compliant
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*/
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#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */ |
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#define EM_SPARC64 11 /* SPARC v9 64-bit unoffical */ |
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#define EM_PARISC 15 /* HPPA */ |
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#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ |
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#define EM_PPC 20 /* PowerPC */ |
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#define EM_ARM 40 |
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#define EM_ALPHA 41 /* DEC ALPHA */ |
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#define EM_SPARCV9 43 /* SPARC version 9 */ |
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#define EM_ALPHA_EXP 0x9026 /* DEC ALPHA */ |
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#define EM_VAX 75 /* DEC VAX */ |
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#define EM_NUM 15 /* number of machine types */ |
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/* Version */
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#define EV_NONE 0 /* Invalid */ |
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#define EV_CURRENT 1 /* Current */ |
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#define EV_NUM 2 /* number of versions */ |
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/* Section Header */
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typedef struct { |
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Elf32_Word sh_name; /* name - index into section header
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string table section */
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Elf32_Word sh_type; /* type */
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Elf32_Word sh_flags; /* flags */
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Elf32_Addr sh_addr; /* address */
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Elf32_Off sh_offset; /* file offset */
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Elf32_Word sh_size; /* section size */
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Elf32_Word sh_link; /* section header table index link */
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Elf32_Word sh_info; /* extra information */
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Elf32_Word sh_addralign; /* address alignment */
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Elf32_Word sh_entsize; /* section entry size */
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} Elf32_Shdr; |
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/* Special Section Indexes */
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#define SHN_UNDEF 0 /* undefined */ |
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#define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */ |
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#define SHN_LOPROC 0xff00 /* reserved range for processor */ |
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#define SHN_HIPROC 0xff1f /* specific section indexes */ |
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#define SHN_ABS 0xfff1 /* absolute value */ |
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#define SHN_COMMON 0xfff2 /* common symbol */ |
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#define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */ |
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/* sh_type */
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#define SHT_NULL 0 /* inactive */ |
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#define SHT_PROGBITS 1 /* program defined information */ |
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#define SHT_SYMTAB 2 /* symbol table section */ |
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#define SHT_STRTAB 3 /* string table section */ |
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#define SHT_RELA 4 /* relocation section with addends*/ |
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#define SHT_HASH 5 /* symbol hash table section */ |
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#define SHT_DYNAMIC 6 /* dynamic section */ |
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#define SHT_NOTE 7 /* note section */ |
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#define SHT_NOBITS 8 /* no space section */ |
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#define SHT_REL 9 /* relation section without addends */ |
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#define SHT_SHLIB 10 /* reserved - purpose unknown */ |
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#define SHT_DYNSYM 11 /* dynamic symbol table section */ |
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#define SHT_NUM 12 /* number of section types */ |
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#define SHT_LOPROC 0x70000000 /* reserved range for processor */ |
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#define SHT_HIPROC 0x7fffffff /* specific section header types */ |
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#define SHT_LOUSER 0x80000000 /* reserved range for application */ |
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#define SHT_HIUSER 0xffffffff /* specific indexes */ |
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/* Section names */
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#define ELF_BSS ".bss" /* uninitialized data */ |
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#define ELF_DATA ".data" /* initialized data */ |
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#define ELF_DEBUG ".debug" /* debug */ |
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#define ELF_DYNAMIC ".dynamic" /* dynamic linking information */ |
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#define ELF_DYNSTR ".dynstr" /* dynamic string table */ |
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#define ELF_DYNSYM ".dynsym" /* dynamic symbol table */ |
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#define ELF_FINI ".fini" /* termination code */ |
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#define ELF_GOT ".got" /* global offset table */ |
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#define ELF_HASH ".hash" /* symbol hash table */ |
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#define ELF_INIT ".init" /* initialization code */ |
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#define ELF_REL_DATA ".rel.data" /* relocation data */ |
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#define ELF_REL_FINI ".rel.fini" /* relocation termination code */ |
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#define ELF_REL_INIT ".rel.init" /* relocation initialization code */ |
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#define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info */ |
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#define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */ |
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#define ELF_REL_TEXT ".rel.text" /* relocation code */ |
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#define ELF_RODATA ".rodata" /* read-only data */ |
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#define ELF_SHSTRTAB ".shstrtab" /* section header string table */ |
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#define ELF_STRTAB ".strtab" /* string table */ |
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#define ELF_SYMTAB ".symtab" /* symbol table */ |
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#define ELF_TEXT ".text" /* code */ |
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/* Section Attribute Flags - sh_flags */
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#define SHF_WRITE 0x1 /* Writable */ |
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#define SHF_ALLOC 0x2 /* occupies memory */ |
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#define SHF_EXECINSTR 0x4 /* executable */ |
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#define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */ |
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/* specific section attributes */
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/* Symbol Table Entry */
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typedef struct elf32_sym { |
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Elf32_Word st_name; /* name - index into string table */
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Elf32_Addr st_value; /* symbol value */
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Elf32_Word st_size; /* symbol size */
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unsigned char st_info; /* type and binding */ |
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unsigned char st_other; /* 0 - no defined meaning */ |
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Elf32_Half st_shndx; /* section header index */
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} Elf32_Sym; |
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/* Symbol table index */
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#define STN_UNDEF 0 /* undefined */ |
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/* Extract symbol info - st_info */
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#define ELF32_ST_BIND(x) ((x) >> 4) |
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#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf) |
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#define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf)) |
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/* Symbol Binding - ELF32_ST_BIND - st_info */
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#define STB_LOCAL 0 /* Local symbol */ |
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#define STB_GLOBAL 1 /* Global symbol */ |
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#define STB_WEAK 2 /* like global - lower precedence */ |
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#define STB_NUM 3 /* number of symbol bindings */ |
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#define STB_LOPROC 13 /* reserved range for processor */ |
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#define STB_HIPROC 15 /* specific symbol bindings */ |
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/* Symbol type - ELF32_ST_TYPE - st_info */
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#define STT_NOTYPE 0 /* not specified */ |
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#define STT_OBJECT 1 /* data object */ |
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#define STT_FUNC 2 /* function */ |
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#define STT_SECTION 3 /* section */ |
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#define STT_FILE 4 /* file */ |
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#define STT_NUM 5 /* number of symbol types */ |
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#define STT_LOPROC 13 /* reserved range for processor */ |
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#define STT_HIPROC 15 /* specific symbol types */ |
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/* Relocation entry with implicit addend */
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typedef struct |
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{
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Elf32_Addr r_offset; /* offset of relocation */
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Elf32_Word r_info; /* symbol table index and type */
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} Elf32_Rel; |
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/* Relocation entry with explicit addend */
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typedef struct |
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{
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Elf32_Addr r_offset; /* offset of relocation */
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Elf32_Word r_info; /* symbol table index and type */
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Elf32_Sword r_addend; |
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} Elf32_Rela; |
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/* Extract relocation info - r_info */
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#define ELF32_R_SYM(i) ((i) >> 8) |
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#define ELF32_R_TYPE(i) ((unsigned char) (i)) |
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#define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t)) |
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/* Program Header */
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typedef struct { |
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Elf32_Word p_type; /* segment type */
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Elf32_Off p_offset; /* segment offset */
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Elf32_Addr p_vaddr; /* virtual address of segment */
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Elf32_Addr p_paddr; /* physical address - ignored? */
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Elf32_Word p_filesz; /* number of bytes in file for seg. */
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Elf32_Word p_memsz; /* number of bytes in mem. for seg. */
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Elf32_Word p_flags; /* flags */
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Elf32_Word p_align; /* memory alignment */
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} Elf32_Phdr; |
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/* Segment types - p_type */
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#define PT_NULL 0 /* unused */ |
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#define PT_LOAD 1 /* loadable segment */ |
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#define PT_DYNAMIC 2 /* dynamic linking section */ |
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#define PT_INTERP 3 /* the RTLD */ |
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#define PT_NOTE 4 /* auxiliary information */ |
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#define PT_SHLIB 5 /* reserved - purpose undefined */ |
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#define PT_PHDR 6 /* program header */ |
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#define PT_NUM 7 /* Number of segment types */ |
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#define PT_LOPROC 0x70000000 /* reserved range for processor */ |
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#define PT_HIPROC 0x7fffffff /* specific segment types */ |
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/* Segment flags - p_flags */
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#define PF_X 0x1 /* Executable */ |
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#define PF_W 0x2 /* Writable */ |
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#define PF_R 0x4 /* Readable */ |
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#define PF_MASKPROC 0xf0000000 /* reserved bits for processor */ |
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/* specific segment flags */
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/* Dynamic structure */
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typedef struct { |
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Elf32_Sword d_tag; /* controls meaning of d_val */
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union {
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Elf32_Word d_val; /* Multiple meanings - see d_tag */
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Elf32_Addr d_ptr; /* program virtual address */
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} d_un; |
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} Elf32_Dyn; |
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/* Dynamic Array Tags - d_tag */
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#define DT_NULL 0 /* marks end of _DYNAMIC array */ |
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#define DT_NEEDED 1 /* string table offset of needed lib */ |
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#define DT_PLTRELSZ 2 /* size of relocation entries in PLT */ |
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#define DT_PLTGOT 3 /* address PLT/GOT */ |
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#define DT_HASH 4 /* address of symbol hash table */ |
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#define DT_STRTAB 5 /* address of string table */ |
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#define DT_SYMTAB 6 /* address of symbol table */ |
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#define DT_RELA 7 /* address of relocation table */ |
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#define DT_RELASZ 8 /* size of relocation table */ |
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#define DT_RELAENT 9 /* size of relocation entry */ |
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#define DT_STRSZ 10 /* size of string table */ |
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#define DT_SYMENT 11 /* size of symbol table entry */ |
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#define DT_INIT 12 /* address of initialization func. */ |
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#define DT_FINI 13 /* address of termination function */ |
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#define DT_SONAME 14 /* string table offset of shared obj */ |
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#define DT_RPATH 15 /* string table offset of library |
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search path */
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#define DT_SYMBOLIC 16 /* start sym search in shared obj. */ |
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#define DT_REL 17 /* address of rel. tbl. w addends */ |
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#define DT_RELSZ 18 /* size of DT_REL relocation table */ |
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#define DT_RELENT 19 /* size of DT_REL relocation entry */ |
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#define DT_PLTREL 20 /* PLT referenced relocation entry */ |
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#define DT_DEBUG 21 /* bugger */ |
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#define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */ |
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#define DT_JMPREL 23 /* add. of PLT's relocation entries */ |
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#define DT_BIND_NOW 24 /* Bind now regardless of env setting */ |
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#define DT_NUM 25 /* Number used. */ |
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#define DT_LOPROC 0x70000000 /* reserved range for processor */ |
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#define DT_HIPROC 0x7fffffff /* specific dynamic array tags */ |
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|
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/* Standard ELF hashing function */
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unsigned int elf_hash(const unsigned char *name); |
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|
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/*
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* Note Definitions
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*/
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typedef struct { |
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Elf32_Word namesz; |
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Elf32_Word descsz; |
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Elf32_Word type; |
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} Elf32_Note; |
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/*
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* XXX - these _KERNEL items aren't part of the ABI!
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*/
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#if defined(_KERNEL) || defined(_DYN_LOADER)
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#define ELF32_NO_ADDR ((u_long) ~0) /* Indicates addr. not yet filled in */ |
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#define ELF_AUX_ENTRIES 8 /* Size of aux array passed to loader */ |
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|
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typedef struct { |
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Elf32_Sword au_id; /* 32-bit id */
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Elf32_Word au_v; /* 32-bit value */
|
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} Aux32Info; |
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|
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enum AuxID {
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AUX_null = 0,
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AUX_ignore = 1,
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AUX_execfd = 2,
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AUX_phdr = 3, /* &phdr[0] */ |
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AUX_phent = 4, /* sizeof(phdr[0]) */ |
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AUX_phnum = 5, /* # phdr entries */ |
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AUX_pagesz = 6, /* PAGESIZE */ |
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AUX_base = 7, /* ld.so base addr */ |
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AUX_flags = 8, /* processor flags */ |
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AUX_entry = 9, /* a.out entry */ |
| 404 |
AUX_sun_uid = 2000, /* euid */ |
| 405 |
AUX_sun_ruid = 2001, /* ruid */ |
| 406 |
AUX_sun_gid = 2002, /* egid */ |
| 407 |
AUX_sun_rgid = 2003 /* rgid */ |
| 408 |
}; |
| 409 |
|
| 410 |
struct elf_args {
|
| 411 |
u_long arg_entry; /* program entry point */
|
| 412 |
u_long arg_interp; /* Interpreter load address */
|
| 413 |
u_long arg_phaddr; /* program header address */
|
| 414 |
u_long arg_phentsize; /* Size of program header */
|
| 415 |
u_long arg_phnum; /* Number of program headers */
|
| 416 |
u_long arg_os; /* OS tag */
|
| 417 |
}; |
| 418 |
|
| 419 |
#endif
|
| 420 |
|
| 421 |
#if !defined(ELFSIZE) && defined(ARCH_ELFSIZE)
|
| 422 |
#define ELFSIZE ARCH_ELFSIZE
|
| 423 |
#endif
|
| 424 |
|
| 425 |
#if defined(ELFSIZE)
|
| 426 |
#define CONCAT(x,y) __CONCAT(x,y)
|
| 427 |
#define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x)))
|
| 428 |
#define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y))))
|
| 429 |
#define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE))
|
| 430 |
#define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x)))
|
| 431 |
#endif
|
| 432 |
|
| 433 |
#define Elf_Ehdr Elf32_Ehdr
|
| 434 |
#define Elf_Phdr Elf32_Phdr
|
| 435 |
#define Elf_Shdr Elf32_Shdr
|
| 436 |
#define Elf_Sym Elf32_Sym
|
| 437 |
#define Elf_Rel Elf32_Rel
|
| 438 |
#define Elf_RelA Elf32_Rela
|
| 439 |
#define Elf_Dyn Elf32_Dyn
|
| 440 |
#define Elf_Word Elf32_Word
|
| 441 |
#define Elf_Sword Elf32_Sword
|
| 442 |
#define Elf_Addr Elf32_Addr
|
| 443 |
#define Elf_Off Elf32_Off
|
| 444 |
#define Elf_Nhdr Elf32_Nhdr
|
| 445 |
#define Elf_Note Elf32_Note
|
| 446 |
|
| 447 |
#define ELF_R_SYM ELF32_R_SYM
|
| 448 |
#define ELF_R_TYPE ELF32_R_TYPE
|
| 449 |
#define ELF_R_INFO ELF32_R_INFO
|
| 450 |
#define ELFCLASS ELFCLASS32
|
| 451 |
|
| 452 |
#define ELF_ST_BIND ELF32_ST_BIND
|
| 453 |
#define ELF_ST_TYPE ELF32_ST_TYPE
|
| 454 |
#define ELF_ST_INFO ELF32_ST_INFO
|
| 455 |
|
| 456 |
#define AuxInfo Aux32Info
|
| 457 |
|
| 458 |
#define ELF_TARG_VER 1 /* The ver for which this code is intended */ |
| 459 |
|
| 460 |
|
| 461 |
__BEGIN_DECLS |
| 462 |
int relocate_rel(Elf32_Rel *, Elf32_Addr, char *); |
| 463 |
int relocate_rela(Elf32_Rela *, Elf32_Addr, char *); |
| 464 |
__END_DECLS |
| 465 |
|
| 466 |
#endif /* _SYS_ELF_H_ */ |