300 lines
12 KiB
C
300 lines
12 KiB
C
/*-
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* Copyright (c) 1998 John D. Polstra.
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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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* $FreeBSD$
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*/
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#ifndef _SYS_ELF_COMMON_H_
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#define _SYS_ELF_COMMON_H_ 1
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/*
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* ELF definitions that are independent of architecture or word size.
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*/
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/*
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* Note header. The ".note" section contains an array of notes. Each
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* begins with this header, aligned to a word boundary. Immediately
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* following the note header is n_namesz bytes of name, padded to the
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* next word boundary. Then comes n_descsz bytes of descriptor, again
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* padded to a word boundary. The values of n_namesz and n_descsz do
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* not include the padding.
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*/
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typedef struct {
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u_int32_t n_namesz; /* Length of name. */
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u_int32_t n_descsz; /* Length of descriptor. */
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u_int32_t n_type; /* Type of this note. */
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} Elf_Note;
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/* Indexes into the e_ident array. Keep synced with
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http://www.sco.com/developer/gabi/ch4.eheader.html */
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#define EI_MAG0 0 /* Magic number, byte 0. */
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#define EI_MAG1 1 /* Magic number, byte 1. */
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#define EI_MAG2 2 /* Magic number, byte 2. */
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#define EI_MAG3 3 /* Magic number, byte 3. */
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#define EI_CLASS 4 /* Class of machine. */
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#define EI_DATA 5 /* Data format. */
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#define EI_VERSION 6 /* ELF format 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 array. */
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/* Values for the magic number bytes. */
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#define ELFMAG0 0x7f
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#define ELFMAG1 'E'
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#define ELFMAG2 'L'
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#define ELFMAG3 'F'
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#define ELFMAG "\177ELF" /* magic string */
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#define SELFMAG 4 /* magic string size */
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/* Values for e_ident[EI_VERSION] and e_version. */
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#define EV_NONE 0
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#define EV_CURRENT 1
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/* Values for e_ident[EI_CLASS]. */
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#define ELFCLASSNONE 0 /* Unknown class. */
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#define ELFCLASS32 1 /* 32-bit architecture. */
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#define ELFCLASS64 2 /* 64-bit architecture. */
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/* Values for e_ident[EI_DATA]. */
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#define ELFDATANONE 0 /* Unknown data format. */
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#define ELFDATA2LSB 1 /* 2's complement little-endian. */
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#define ELFDATA2MSB 2 /* 2's complement big-endian. */
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/* Values for e_ident[EI_OSABI]. */
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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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/* Values for e_type. */
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#define ET_NONE 0 /* Unknown type. */
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#define ET_REL 1 /* Relocatable. */
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#define ET_EXEC 2 /* Executable. */
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#define ET_DYN 3 /* Shared object. */
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#define ET_CORE 4 /* Core file. */
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/* Values for e_machine. */
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#define EM_NONE 0 /* Unknown machine. */
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#define EM_M32 1 /* AT&T WE32100. */
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#define EM_SPARC 2 /* Sun SPARC. */
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#define EM_386 3 /* Intel i386. */
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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 i486. */
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#define EM_860 7 /* Intel i860. */
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#define EM_MIPS 8 /* MIPS R3000 Big-Endian only */
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/* Extensions. This list is not complete. */
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#define EM_S370 9 /* IBM System/370 */
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#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */ /* Depreciated */
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#define EM_PARISC 15 /* HPPA */
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#define EM_SPARC32PLUS 18 /* SPARC v8plus */
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#define EM_PPC 20 /* PowerPC 32-bit */
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#define EM_PPC64 21 /* PowerPC 64-bit */
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#define EM_ARM 40 /* ARM */
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#define EM_SPARCV9 43 /* SPARC v9 64-bit */
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#define EM_IA_64 50 /* Intel IA-64 Processor */
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#define EM_X86_64 62 /* Advanced Micro Devices x86-64 */
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#define EM_ALPHA 0x9026 /* Alpha (written in the absence of an ABI */
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/* Special section indexes. */
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#define SHN_UNDEF 0 /* Undefined, missing, irrelevant. */
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#define SHN_LORESERVE 0xff00 /* First of reserved range. */
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#define SHN_LOPROC 0xff00 /* First processor-specific. */
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#define SHN_HIPROC 0xff1f /* Last processor-specific. */
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#define SHN_ABS 0xfff1 /* Absolute values. */
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#define SHN_COMMON 0xfff2 /* Common data. */
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#define SHN_HIRESERVE 0xffff /* Last of reserved range. */
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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 /* relocation section - no 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_LOOS 0x60000000 /* First of OS specific semantics */
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#define SHT_HIOS 0x6fffffff /* Last of OS specific semantics */
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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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/* Flags for sh_flags. */
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#define SHF_WRITE 0x1 /* Section contains writable data. */
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#define SHF_ALLOC 0x2 /* Section occupies memory. */
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#define SHF_EXECINSTR 0x4 /* Section contains instructions. */
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#define SHF_TLS 0x400 /* Section contains TLS data. */
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#define SHF_MASKPROC 0xf0000000 /* Reserved for processor-specific. */
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/* Values for p_type. */
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#define PT_NULL 0 /* Unused entry. */
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#define PT_LOAD 1 /* Loadable segment. */
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#define PT_DYNAMIC 2 /* Dynamic linking information segment. */
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#define PT_INTERP 3 /* Pathname of interpreter. */
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#define PT_NOTE 4 /* Auxiliary information. */
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#define PT_SHLIB 5 /* Reserved (not used). */
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#define PT_PHDR 6 /* Location of program header itself. */
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#define PT_TLS 7 /* Thread local storage segment */
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#define PT_COUNT 8 /* Number of defined p_type values. */
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#define PT_LOOS 0x60000000 /* OS-specific */
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#define PT_HIOS 0x6fffffff /* OS-specific */
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#define PT_LOPROC 0x70000000 /* First processor-specific type. */
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#define PT_HIPROC 0x7fffffff /* Last processor-specific type. */
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/* Values for 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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/* Values for d_tag. */
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#define DT_NULL 0 /* Terminating entry. */
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#define DT_NEEDED 1 /* String table offset of a needed shared
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library. */
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#define DT_PLTRELSZ 2 /* Total size in bytes of PLT relocations. */
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#define DT_PLTGOT 3 /* Processor-dependent address. */
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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 ElfNN_Rela relocations. */
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#define DT_RELASZ 8 /* Total size of ElfNN_Rela relocations. */
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#define DT_RELAENT 9 /* Size of each ElfNN_Rela relocation entry. */
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#define DT_STRSZ 10 /* Size of string table. */
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#define DT_SYMENT 11 /* Size of each symbol table entry. */
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#define DT_INIT 12 /* Address of initialization function. */
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#define DT_FINI 13 /* Address of finalization function. */
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#define DT_SONAME 14 /* String table offset of shared object
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name. */
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#define DT_RPATH 15 /* String table offset of library path. [sup] */
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#define DT_SYMBOLIC 16 /* Indicates "symbolic" linking. [sup] */
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#define DT_REL 17 /* Address of ElfNN_Rel relocations. */
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#define DT_RELSZ 18 /* Total size of ElfNN_Rel relocations. */
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#define DT_RELENT 19 /* Size of each ElfNN_Rel relocation. */
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#define DT_PLTREL 20 /* Type of relocation used for PLT. */
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#define DT_DEBUG 21 /* Reserved (not used). */
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#define DT_TEXTREL 22 /* Indicates there may be relocations in
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non-writable segments. [sup] */
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#define DT_JMPREL 23 /* Address of PLT relocations. */
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#define DT_BIND_NOW 24 /* [sup] */
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#define DT_INIT_ARRAY 25 /* Address of the array of pointers to
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initialization functions */
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#define DT_FINI_ARRAY 26 /* Address of the array of pointers to
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termination functions */
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#define DT_INIT_ARRAYSZ 27 /* Size in bytes of the array of
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initialization functions. */
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#define DT_FINI_ARRAYSZ 28 /* Size in bytes of the array of
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terminationfunctions. */
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#define DT_RUNPATH 29 /* String table offset of a null-terminated
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library search path string. */
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#define DT_FLAGS 30 /* Object specific flag values. */
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#define DT_ENCODING 32 /* Values greater than or equal to DT_ENCODING
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and less than DT_LOOS follow the rules for
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the interpretation of the d_un union
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as follows: even == 'd_ptr', even == 'd_val'
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or none */
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#define DT_PREINIT_ARRAY 32 /* Address of the array of pointers to
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pre-initialization functions. */
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#define DT_PREINIT_ARRAYSZ 33 /* Size in bytes of the array of
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pre-initialization functions. */
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#define DT_COUNT 33 /* Number of defined d_tag values. */
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#define DT_LOOS 0x6000000d /* First OS-specific */
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#define DT_HIOS 0x6fff0000 /* Last OS-specific */
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#define DT_LOPROC 0x70000000 /* First processor-specific type. */
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#define DT_HIPROC 0x7fffffff /* Last processor-specific type. */
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/* Values for DT_FLAGS */
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#define DF_ORIGIN 0x0001 /* Indicates that the object being loaded may
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make reference to the $ORIGIN substitution
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string */
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#define DF_SYMBOLIC 0x0002 /* Indicates "symbolic" linking. */
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#define DF_TEXTREL 0x0004 /* Indicates there may be relocations in
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non-writable segments. */
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#define DF_BIND_NOW 0x0008 /* Indicates that the dynamic linker should
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process all relocations for the object
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containing this entry before transferring
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control to the program. */
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#define DF_STATIC_TLS 0x0010 /* Indicates that the shared object or
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executable contains code using a static
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thread-local storage scheme. */
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/* Values for n_type. Used in core files. */
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#define NT_PRSTATUS 1 /* Process status. */
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#define NT_FPREGSET 2 /* Floating point registers. */
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#define NT_PRPSINFO 3 /* Process state info. */
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/* Symbol Binding - ELFNN_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_LOPROC 13 /* reserved range for processor */
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#define STB_HIPROC 15 /* specific symbol bindings */
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/* Symbol type - ELFNN_ST_TYPE - st_info */
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#define STT_NOTYPE 0 /* Unspecified type. */
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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 /* Source file. */
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#define STT_TLS 6 /* TLS object. */
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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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/* Special symbol table indexes. */
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#define STN_UNDEF 0 /* Undefined symbol index. */
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#endif /* !_SYS_ELF_COMMON_H_ */
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