881 lines
35 KiB
C
881 lines
35 KiB
C
/* This file defines standard ELF types, structures, and macros.
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Copyright (C) 1995-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _ELF_H
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#define _ELF_H 1
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# include <stdint.h>
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/* Standard ELF types. */
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/* Type for a 16-bit quantity. */
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typedef uint16_t Elf32_Half;
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typedef uint16_t Elf64_Half;
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/* Types for signed and unsigned 32-bit quantities. */
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typedef uint32_t Elf32_Word;
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typedef int32_t Elf32_Sword;
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typedef uint32_t Elf64_Word;
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typedef int32_t Elf64_Sword;
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/* Types for signed and unsigned 64-bit quantities. */
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typedef uint64_t Elf32_Xword;
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typedef int64_t Elf32_Sxword;
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typedef uint64_t Elf64_Xword;
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typedef int64_t Elf64_Sxword;
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/* Type of addresses. */
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typedef uint32_t Elf32_Addr;
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typedef uint64_t Elf64_Addr;
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/* Type of file offsets. */
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typedef uint32_t Elf32_Off;
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typedef uint64_t Elf64_Off;
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/* Type for section indices, which are 16-bit quantities. */
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typedef uint16_t Elf32_Section;
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typedef uint16_t Elf64_Section;
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/* Type for version symbol information. */
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typedef Elf32_Half Elf32_Versym;
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typedef Elf64_Half Elf64_Versym;
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/* The ELF file header. This appears at the start of every ELF file. */
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#define EI_NIDENT (16)
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typedef struct
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{
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unsigned char e_ident[EI_NIDENT]; /* Magic number and other info */
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Elf32_Half e_type; /* Object file type */
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Elf32_Half e_machine; /* Architecture */
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Elf32_Word e_version; /* Object file version */
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Elf32_Addr e_entry; /* Entry point virtual address */
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Elf32_Off e_phoff; /* Program header table file offset */
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Elf32_Off e_shoff; /* Section header table file offset */
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Elf32_Word e_flags; /* Processor-specific flags */
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Elf32_Half e_ehsize; /* ELF header size in bytes */
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Elf32_Half e_phentsize; /* Program header table entry size */
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Elf32_Half e_phnum; /* Program header table entry count */
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Elf32_Half e_shentsize; /* Section header table entry size */
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Elf32_Half e_shnum; /* Section header table entry count */
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Elf32_Half e_shstrndx; /* Section header string table index */
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} Elf32_Ehdr;
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/* Fields in the e_ident array. The EI_* macros are indices into the
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array. The macros under each EI_* macro are the values the byte
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may have. */
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#define EI_MAG0 0 /* File identification byte 0 index */
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#define ELFMAG0 0x7f /* Magic number byte 0 */
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#define EI_MAG1 1 /* File identification byte 1 index */
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#define ELFMAG1 'E' /* Magic number byte 1 */
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#define EI_MAG2 2 /* File identification byte 2 index */
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#define ELFMAG2 'L' /* Magic number byte 2 */
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#define EI_MAG3 3 /* File identification byte 3 index */
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#define ELFMAG3 'F' /* Magic number byte 3 */
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/* Conglomeration of the identification bytes, for easy testing as a word. */
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#define ELFMAG "\177ELF"
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#define SELFMAG 4
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#define EI_CLASS 4 /* File class byte index */
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#define ELFCLASS32 1 /* 32-bit objects */
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#define EI_DATA 5 /* Data encoding byte index */
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#define ELFDATANONE 0 /* Invalid data encoding */
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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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#define ELFDATANUM 3
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#define EI_PAD 9 /* Byte index of padding bytes */
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/* Legal values for e_type (object file 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 defined types */
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#define ET_LOOS 0xfe00 /* OS-specific range start */
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#define ET_HIOS 0xfeff /* OS-specific range end */
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#define ET_LOPROC 0xff00 /* Processor-specific range start */
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#define ET_HIPROC 0xffff /* Processor-specific range end */
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/* Legal values for e_machine (architecture). */
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#define EM_386 3 /* Intel 80386 */
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/* Legal values for e_version (version). */
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#define EV_CURRENT 1 /* Current version */
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/* Section header. */
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typedef struct
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{
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Elf32_Word sh_name; /* Section name (string tbl index) */
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Elf32_Word sh_type; /* Section type */
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Elf32_Word sh_flags; /* Section flags */
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Elf32_Addr sh_addr; /* Section virtual addr at execution */
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Elf32_Off sh_offset; /* Section file offset */
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Elf32_Word sh_size; /* Section size in bytes */
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Elf32_Word sh_link; /* Link to another section */
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Elf32_Word sh_info; /* Additional section information */
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Elf32_Word sh_addralign; /* Section alignment */
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Elf32_Word sh_entsize; /* Entry size if section holds table */
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} Elf32_Shdr;
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/* Special section indices. */
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#define SHN_UNDEF 0 /* Undefined section */
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#define SHN_LORESERVE 0xff00 /* Start of reserved indices */
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#define SHN_LOPROC 0xff00 /* Start of processor-specific */
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#define SHN_BEFORE 0xff00 /* Order section before all others
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(Solaris). */
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#define SHN_AFTER 0xff01 /* Order section after all others
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(Solaris). */
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#define SHN_HIPROC 0xff1f /* End of processor-specific */
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#define SHN_LOOS 0xff20 /* Start of OS-specific */
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#define SHN_HIOS 0xff3f /* End of OS-specific */
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#define SHN_ABS 0xfff1 /* Associated symbol is absolute */
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#define SHN_COMMON 0xfff2 /* Associated symbol is common */
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#define SHN_XINDEX 0xffff /* Index is in extra table. */
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#define SHN_HIRESERVE 0xffff /* End of reserved indices */
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/* Legal values for sh_type (section type). */
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#define SHT_NULL 0 /* Section header table entry unused */
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#define SHT_PROGBITS 1 /* Program data */
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#define SHT_SYMTAB 2 /* Symbol table */
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#define SHT_STRTAB 3 /* String table */
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#define SHT_RELA 4 /* Relocation entries with addends */
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#define SHT_HASH 5 /* Symbol hash table */
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#define SHT_DYNAMIC 6 /* Dynamic linking information */
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#define SHT_NOTE 7 /* Notes */
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#define SHT_NOBITS 8 /* Program space with no data (bss) */
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#define SHT_REL 9 /* Relocation entries, no addends */
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#define SHT_SHLIB 10 /* Reserved */
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#define SHT_DYNSYM 11 /* Dynamic linker symbol table */
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#define SHT_INIT_ARRAY 14 /* Array of constructors */
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#define SHT_FINI_ARRAY 15 /* Array of destructors */
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#define SHT_PREINIT_ARRAY 16 /* Array of pre-constructors */
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#define SHT_GROUP 17 /* Section group */
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#define SHT_SYMTAB_SHNDX 18 /* Extended section indices */
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#define SHT_NUM 19 /* Number of defined types. */
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#define SHT_LOOS 0x60000000 /* Start OS-specific. */
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#define SHT_GNU_ATTRIBUTES 0x6ffffff5 /* Object attributes. */
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#define SHT_GNU_HASH 0x6ffffff6 /* GNU-style hash table. */
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#define SHT_GNU_LIBLIST 0x6ffffff7 /* Prelink library list */
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#define SHT_CHECKSUM 0x6ffffff8 /* Checksum for DSO content. */
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#define SHT_LOSUNW 0x6ffffffa /* Sun-specific low bound. */
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#define SHT_SUNW_move 0x6ffffffa
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#define SHT_SUNW_COMDAT 0x6ffffffb
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#define SHT_SUNW_syminfo 0x6ffffffc
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#define SHT_GNU_verdef 0x6ffffffd /* Version definition section. */
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#define SHT_GNU_verneed 0x6ffffffe /* Version needs section. */
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#define SHT_GNU_versym 0x6fffffff /* Version symbol table. */
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#define SHT_HISUNW 0x6fffffff /* Sun-specific high bound. */
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#define SHT_HIOS 0x6fffffff /* End OS-specific type */
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#define SHT_LOPROC 0x70000000 /* Start of processor-specific */
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#define SHT_HIPROC 0x7fffffff /* End of processor-specific */
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#define SHT_LOUSER 0x80000000 /* Start of application-specific */
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#define SHT_HIUSER 0x8fffffff /* End of application-specific */
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/* Legal values for sh_flags (section flags). */
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#define SHF_WRITE (1 << 0) /* Writable */
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#define SHF_ALLOC (1 << 1) /* Occupies memory during execution */
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#define SHF_EXECINSTR (1 << 2) /* Executable */
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#define SHF_MERGE (1 << 4) /* Might be merged */
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#define SHF_STRINGS (1 << 5) /* Contains nul-terminated strings */
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#define SHF_INFO_LINK (1 << 6) /* `sh_info' contains SHT index */
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#define SHF_LINK_ORDER (1 << 7) /* Preserve order after combining */
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#define SHF_OS_NONCONFORMING (1 << 8) /* Non-standard OS specific handling
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required */
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#define SHF_GROUP (1 << 9) /* Section is member of a group. */
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#define SHF_TLS (1 << 10) /* Section hold thread-local data. */
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#define SHF_COMPRESSED (1 << 11) /* Section with compressed data. */
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#define SHF_MASKOS 0x0ff00000 /* OS-specific. */
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#define SHF_MASKPROC 0xf0000000 /* Processor-specific */
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#define SHF_ORDERED (1 << 30) /* Special ordering requirement
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(Solaris). */
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#define SHF_EXCLUDE (1U << 31) /* Section is excluded unless
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referenced or allocated (Solaris).*/
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/* Section group handling. */
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#define GRP_COMDAT 0x1 /* Mark group as COMDAT. */
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/* Symbol table entry. */
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typedef struct
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{
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Elf32_Word st_name; /* Symbol name (string tbl index) */
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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; /* Symbol type and binding */
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unsigned char st_other; /* Symbol visibility */
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Elf32_Section st_shndx; /* Section index */
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} Elf32_Sym;
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/* The syminfo section if available contains additional information about
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every dynamic symbol. */
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typedef struct
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{
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Elf32_Half si_boundto; /* Direct bindings, symbol bound to */
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Elf32_Half si_flags; /* Per symbol flags */
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} Elf32_Syminfo;
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/* Possible values for si_boundto. */
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#define SYMINFO_BT_SELF 0xffff /* Symbol bound to self */
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#define SYMINFO_BT_PARENT 0xfffe /* Symbol bound to parent */
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#define SYMINFO_BT_LOWRESERVE 0xff00 /* Beginning of reserved entries */
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/* Possible bitmasks for si_flags. */
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#define SYMINFO_FLG_DIRECT 0x0001 /* Direct bound symbol */
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#define SYMINFO_FLG_PASSTHRU 0x0002 /* Pass-thru symbol for translator */
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#define SYMINFO_FLG_COPY 0x0004 /* Symbol is a copy-reloc */
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#define SYMINFO_FLG_LAZYLOAD 0x0008 /* Symbol bound to object to be lazy
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loaded */
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/* Syminfo version values. */
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#define SYMINFO_NONE 0
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#define SYMINFO_CURRENT 1
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#define SYMINFO_NUM 2
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/* How to extract and insert information held in the st_info field. */
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#define ELF32_ST_BIND(val) (((unsigned char) (val)) >> 4)
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#define ELF32_ST_TYPE(val) ((val) & 0xf)
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#define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
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/* Legal values for ST_BIND subfield of st_info (symbol binding). */
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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 /* Weak symbol */
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#define STB_NUM 3 /* Number of defined types. */
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#define STB_LOOS 10 /* Start of OS-specific */
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#define STB_GNU_UNIQUE 10 /* Unique symbol. */
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#define STB_HIOS 12 /* End of OS-specific */
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#define STB_LOPROC 13 /* Start of processor-specific */
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#define STB_HIPROC 15 /* End of processor-specific */
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/* Legal values for ST_TYPE subfield of st_info (symbol type). */
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#define STT_NOTYPE 0 /* Symbol type is unspecified */
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#define STT_OBJECT 1 /* Symbol is a data object */
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#define STT_FUNC 2 /* Symbol is a code object */
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#define STT_SECTION 3 /* Symbol associated with a section */
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#define STT_FILE 4 /* Symbol's name is file name */
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#define STT_COMMON 5 /* Symbol is a common data object */
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#define STT_TLS 6 /* Symbol is thread-local data object*/
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#define STT_NUM 7 /* Number of defined types. */
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#define STT_LOOS 10 /* Start of OS-specific */
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#define STT_GNU_IFUNC 10 /* Symbol is indirect code object */
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#define STT_HIOS 12 /* End of OS-specific */
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#define STT_LOPROC 13 /* Start of processor-specific */
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#define STT_HIPROC 15 /* End of processor-specific */
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/* Symbol table indices are found in the hash buckets and chain table
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of a symbol hash table section. This special index value indicates
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the end of a chain, meaning no further symbols are found in that bucket. */
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#define STN_UNDEF 0 /* End of a chain. */
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/* How to extract and insert information held in the st_other field. */
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#define ELF32_ST_VISIBILITY(o) ((o) & 0x03)
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/* Symbol visibility specification encoded in the st_other field. */
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#define STV_DEFAULT 0 /* Default symbol visibility rules */
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#define STV_INTERNAL 1 /* Processor specific hidden class */
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#define STV_HIDDEN 2 /* Sym unavailable in other modules */
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#define STV_PROTECTED 3 /* Not preemptible, not exported */
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/* Relocation table entry without addend (in section of type SHT_REL). */
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typedef struct
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{
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Elf32_Addr r_offset; /* Address */
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Elf32_Word r_info; /* Relocation type and symbol index */
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} Elf32_Rel;
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/* Relocation table entry with addend (in section of type SHT_RELA). */
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typedef struct
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{
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Elf32_Addr r_offset; /* Address */
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Elf32_Word r_info; /* Relocation type and symbol index */
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Elf32_Sword r_addend; /* Addend */
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} Elf32_Rela;
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/* How to extract and insert information held in the r_info field. */
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#define ELF32_R_SYM(val) ((val) >> 8)
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#define ELF32_R_TYPE(val) ((val) & 0xff)
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#define ELF32_R_INFO(sym, type) (((sym) << 8) + ((type) & 0xff))
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/* Program segment header. */
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typedef struct
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{
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Elf32_Word p_type; /* Segment type */
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Elf32_Off p_offset; /* Segment file offset */
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Elf32_Addr p_vaddr; /* Segment virtual address */
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Elf32_Addr p_paddr; /* Segment physical address */
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Elf32_Word p_filesz; /* Segment size in file */
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Elf32_Word p_memsz; /* Segment size in memory */
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Elf32_Word p_flags; /* Segment flags */
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Elf32_Word p_align; /* Segment alignment */
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} Elf32_Phdr;
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/* Special value for e_phnum. This indicates that the real number of
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program headers is too large to fit into e_phnum. Instead the real
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value is in the field sh_info of section 0. */
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#define PN_XNUM 0xffff
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/* Legal values for p_type (segment type). */
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#define PT_NULL 0 /* Program header table entry unused */
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#define PT_LOAD 1 /* Loadable program segment */
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#define PT_DYNAMIC 2 /* Dynamic linking information */
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#define PT_INTERP 3 /* Program interpreter */
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#define PT_NOTE 4 /* Auxiliary information */
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#define PT_SHLIB 5 /* Reserved */
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#define PT_PHDR 6 /* Entry for header table itself */
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#define PT_TLS 7 /* Thread-local storage segment */
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#define PT_NUM 8 /* Number of defined types */
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#define PT_LOOS 0x60000000 /* Start of OS-specific */
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#define PT_GNU_STACK 0x6474e551 /* Indicates stack executability */
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#define PT_GNU_RELRO 0x6474e552 /* Read-only after relocation */
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#define PT_LOSUNW 0x6ffffffa
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#define PT_SUNWBSS 0x6ffffffa /* Sun Specific segment */
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#define PT_SUNWSTACK 0x6ffffffb /* Stack segment */
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#define PT_HISUNW 0x6fffffff
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#define PT_HIOS 0x6fffffff /* End of OS-specific */
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#define PT_LOPROC 0x70000000 /* Start of processor-specific */
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#define PT_HIPROC 0x7fffffff /* End of processor-specific */
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/* Legal values for p_flags (segment flags). */
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#define PF_X (1 << 0) /* Segment is executable */
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#define PF_W (1 << 1) /* Segment is writable */
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#define PF_R (1 << 2) /* Segment is readable */
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#define PF_MASKOS 0x0ff00000 /* OS-specific */
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#define PF_MASKPROC 0xf0000000 /* Processor-specific */
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/* Legal values for note segment descriptor types for core files. */
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#define NT_PRSTATUS 1 /* Contains copy of prstatus struct */
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#define NT_FPREGSET 2 /* Contains copy of fpregset struct */
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#define NT_PRPSINFO 3 /* Contains copy of prpsinfo struct */
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#define NT_PRXREG 4 /* Contains copy of prxregset struct */
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#define NT_TASKSTRUCT 4 /* Contains copy of task structure */
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#define NT_PLATFORM 5 /* String from sysinfo(SI_PLATFORM) */
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#define NT_AUXV 6 /* Contains copy of auxv array */
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#define NT_GWINDOWS 7 /* Contains copy of gwindows struct */
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#define NT_ASRS 8 /* Contains copy of asrset struct */
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#define NT_PSTATUS 10 /* Contains copy of pstatus struct */
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#define NT_PSINFO 13 /* Contains copy of psinfo struct */
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#define NT_PRCRED 14 /* Contains copy of prcred struct */
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#define NT_UTSNAME 15 /* Contains copy of utsname struct */
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#define NT_LWPSTATUS 16 /* Contains copy of lwpstatus struct */
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#define NT_LWPSINFO 17 /* Contains copy of lwpinfo struct */
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#define NT_PRFPXREG 20 /* Contains copy of fprxregset struct */
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#define NT_PRXFPREG 0x46e62b7f /* Contains copy of user_fxsr_struct */
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#define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */
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#define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */
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#define NT_PPC_VSX 0x102 /* PowerPC VSX registers */
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#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */
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#define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */
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#define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */
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#define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */
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#define NT_S390_TIMER 0x301 /* s390 timer register */
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#define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */
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#define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */
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#define NT_S390_CTRS 0x304 /* s390 control registers */
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#define NT_S390_PREFIX 0x305 /* s390 prefix register */
|
|
#define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */
|
|
#define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */
|
|
#define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */
|
|
#define NT_ARM_TLS 0x401 /* ARM TLS register */
|
|
#define NT_ARM_HW_BREAK 0x402 /* ARM hardware breakpoint registers */
|
|
#define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */
|
|
|
|
/* Legal values for the note segment descriptor types for object files. */
|
|
|
|
#define NT_VERSION 1 /* Contains a version string. */
|
|
|
|
/* Legal values for d_tag (dynamic entry type). */
|
|
|
|
#define DT_NULL 0 /* Marks end of dynamic section */
|
|
#define DT_NEEDED 1 /* Name of needed library */
|
|
#define DT_PLTRELSZ 2 /* Size in bytes of PLT relocs */
|
|
#define DT_PLTGOT 3 /* Processor defined value */
|
|
#define DT_HASH 4 /* Address of symbol hash table */
|
|
#define DT_STRTAB 5 /* Address of string table */
|
|
#define DT_SYMTAB 6 /* Address of symbol table */
|
|
#define DT_RELA 7 /* Address of Rela relocs */
|
|
#define DT_RELASZ 8 /* Total size of Rela relocs */
|
|
#define DT_RELAENT 9 /* Size of one Rela reloc */
|
|
#define DT_STRSZ 10 /* Size of string table */
|
|
#define DT_SYMENT 11 /* Size of one symbol table entry */
|
|
#define DT_INIT 12 /* Address of init function */
|
|
#define DT_FINI 13 /* Address of termination function */
|
|
#define DT_SONAME 14 /* Name of shared object */
|
|
#define DT_SYMBOLIC 16 /* Start symbol search here */
|
|
#define DT_REL 17 /* Address of Rel relocs */
|
|
#define DT_RELSZ 18 /* Total size of Rel relocs */
|
|
#define DT_RELENT 19 /* Size of one Rel reloc */
|
|
#define DT_PLTREL 20 /* Type of reloc in PLT */
|
|
#define DT_DEBUG 21 /* For debugging; unspecified */
|
|
#define DT_TEXTREL 22 /* Reloc might modify .text */
|
|
#define DT_JMPREL 23 /* Address of PLT relocs */
|
|
#define DT_BIND_NOW 24 /* Process relocations of object */
|
|
#define DT_INIT_ARRAY 25 /* Array with addresses of init fct */
|
|
#define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */
|
|
#define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */
|
|
#define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */
|
|
#define DT_RUNPATH 29 /* Library search path */
|
|
#define DT_FLAGS 30 /* Flags for the object being loaded */
|
|
#define DT_ENCODING 32 /* Start of encoded range */
|
|
#define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/
|
|
#define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */
|
|
#define DT_NUM 34 /* Number used */
|
|
#define DT_LOOS 0x6000000d /* Start of OS-specific */
|
|
#define DT_HIOS 0x6ffff000 /* End of OS-specific */
|
|
#define DT_LOPROC 0x70000000 /* Start of processor-specific */
|
|
#define DT_HIPROC 0x7fffffff /* End of processor-specific */
|
|
#define DT_PROCNUM DT_MIPS_NUM /* Most used by any processor */
|
|
|
|
/* DT_* entries which fall between DT_VALRNGHI & DT_VALRNGLO use the
|
|
Dyn.d_un.d_val field of the Elf*_Dyn structure. This follows Sun's
|
|
approach. */
|
|
#define DT_VALRNGLO 0x6ffffd00
|
|
#define DT_GNU_PRELINKED 0x6ffffdf5 /* Prelinking timestamp */
|
|
#define DT_GNU_CONFLICTSZ 0x6ffffdf6 /* Size of conflict section */
|
|
#define DT_GNU_LIBLISTSZ 0x6ffffdf7 /* Size of library list */
|
|
#define DT_CHECKSUM 0x6ffffdf8
|
|
#define DT_PLTPADSZ 0x6ffffdf9
|
|
#define DT_MOVEENT 0x6ffffdfa
|
|
#define DT_MOVESZ 0x6ffffdfb
|
|
#define DT_FEATURE_1 0x6ffffdfc /* Feature selection (DTF_*). */
|
|
#define DT_POSFLAG_1 0x6ffffdfd /* Flags for DT_* entries, effecting
|
|
the following DT_* entry. */
|
|
#define DT_SYMINSZ 0x6ffffdfe /* Size of syminfo table (in bytes) */
|
|
#define DT_SYMINENT 0x6ffffdff /* Entry size of syminfo */
|
|
#define DT_VALRNGHI 0x6ffffdff
|
|
#define DT_VALTAGIDX(tag) (DT_VALRNGHI - (tag)) /* Reverse order! */
|
|
#define DT_VALNUM 12
|
|
|
|
/* DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the
|
|
Dyn.d_un.d_ptr field of the Elf*_Dyn structure.
|
|
|
|
If any adjustment is made to the ELF object after it has been
|
|
built these entries will need to be adjusted. */
|
|
#define DT_ADDRRNGLO 0x6ffffe00
|
|
#define DT_GNU_HASH 0x6ffffef5 /* GNU-style hash table. */
|
|
#define DT_TLSDESC_PLT 0x6ffffef6
|
|
#define DT_TLSDESC_GOT 0x6ffffef7
|
|
#define DT_GNU_CONFLICT 0x6ffffef8 /* Start of conflict section */
|
|
#define DT_GNU_LIBLIST 0x6ffffef9 /* Library list */
|
|
#define DT_CONFIG 0x6ffffefa /* Configuration information. */
|
|
#define DT_DEPAUDIT 0x6ffffefb /* Dependency auditing. */
|
|
#define DT_AUDIT 0x6ffffefc /* Object auditing. */
|
|
#define DT_PLTPAD 0x6ffffefd /* PLT padding. */
|
|
#define DT_MOVETAB 0x6ffffefe /* Move table. */
|
|
#define DT_SYMINFO 0x6ffffeff /* Syminfo table. */
|
|
#define DT_ADDRRNGHI 0x6ffffeff
|
|
#define DT_ADDRTAGIDX(tag) (DT_ADDRRNGHI - (tag)) /* Reverse order! */
|
|
#define DT_ADDRNUM 11
|
|
|
|
/* The versioning entry types. The next are defined as part of the
|
|
GNU extension. */
|
|
#define DT_VERSYM 0x6ffffff0
|
|
|
|
#define DT_RELACOUNT 0x6ffffff9
|
|
#define DT_RELCOUNT 0x6ffffffa
|
|
|
|
/* These were chosen by Sun. */
|
|
#define DT_FLAGS_1 0x6ffffffb /* State flags, see DF_1_* below. */
|
|
#define DT_VERDEF 0x6ffffffc /* Address of version definition
|
|
table */
|
|
#define DT_VERDEFNUM 0x6ffffffd /* Number of version definitions */
|
|
#define DT_VERNEED 0x6ffffffe /* Address of table with needed
|
|
versions */
|
|
#define DT_VERNEEDNUM 0x6fffffff /* Number of needed versions */
|
|
#define DT_VERSIONTAGIDX(tag) (DT_VERNEEDNUM - (tag)) /* Reverse order! */
|
|
#define DT_VERSIONTAGNUM 16
|
|
|
|
/* Sun added these machine-independent extensions in the "processor-specific"
|
|
range. Be compatible. */
|
|
#define DT_AUXILIARY 0x7ffffffd /* Shared object to load before self */
|
|
#define DT_FILTER 0x7fffffff /* Shared object to get values from */
|
|
#define DT_EXTRATAGIDX(tag) ((Elf32_Word)-((Elf32_Sword) (tag) <<1>>1)-1)
|
|
#define DT_EXTRANUM 3
|
|
|
|
/* Values of `d_un.d_val' in the DT_FLAGS entry. */
|
|
#define DF_ORIGIN 0x00000001 /* Object may use DF_ORIGIN */
|
|
#define DF_SYMBOLIC 0x00000002 /* Symbol resolutions starts here */
|
|
#define DF_TEXTREL 0x00000004 /* Object contains text relocations */
|
|
#define DF_BIND_NOW 0x00000008 /* No lazy binding for this object */
|
|
#define DF_STATIC_TLS 0x00000010 /* Module uses the static TLS model */
|
|
|
|
/* State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1
|
|
entry in the dynamic section. */
|
|
#define DF_1_NOW 0x00000001 /* Set RTLD_NOW for this object. */
|
|
#define DF_1_GLOBAL 0x00000002 /* Set RTLD_GLOBAL for this object. */
|
|
#define DF_1_GROUP 0x00000004 /* Set RTLD_GROUP for this object. */
|
|
#define DF_1_NODELETE 0x00000008 /* Set RTLD_NODELETE for this object.*/
|
|
#define DF_1_LOADFLTR 0x00000010 /* Trigger filtee loading at runtime.*/
|
|
#define DF_1_INITFIRST 0x00000020 /* Set RTLD_INITFIRST for this object*/
|
|
#define DF_1_NOOPEN 0x00000040 /* Set RTLD_NOOPEN for this object. */
|
|
#define DF_1_ORIGIN 0x00000080 /* $ORIGIN must be handled. */
|
|
#define DF_1_DIRECT 0x00000100 /* Direct binding enabled. */
|
|
#define DF_1_TRANS 0x00000200
|
|
#define DF_1_INTERPOSE 0x00000400 /* Object is used to interpose. */
|
|
#define DF_1_NODEFLIB 0x00000800 /* Ignore default lib search path. */
|
|
#define DF_1_NODUMP 0x00001000 /* Object can't be dldump'ed. */
|
|
#define DF_1_CONFALT 0x00002000 /* Configuration alternative created.*/
|
|
#define DF_1_ENDFILTEE 0x00004000 /* Filtee terminates filters search. */
|
|
#define DF_1_DISPRELDNE 0x00008000 /* Disp reloc applied at build time. */
|
|
#define DF_1_DISPRELPND 0x00010000 /* Disp reloc applied at run-time. */
|
|
#define DF_1_NODIRECT 0x00020000 /* Object has no-direct binding. */
|
|
#define DF_1_IGNMULDEF 0x00040000
|
|
#define DF_1_NOKSYMS 0x00080000
|
|
#define DF_1_NOHDR 0x00100000
|
|
#define DF_1_EDITED 0x00200000 /* Object is modified after built. */
|
|
#define DF_1_NORELOC 0x00400000
|
|
#define DF_1_SYMINTPOSE 0x00800000 /* Object has individual interposers. */
|
|
#define DF_1_GLOBAUDIT 0x01000000 /* Global auditing required. */
|
|
#define DF_1_SINGLETON 0x02000000 /* Singleton symbols are used. */
|
|
#define DF_1_PIE 0x08000000
|
|
|
|
/* Flags for the feature selection in DT_FEATURE_1. */
|
|
#define DTF_1_PARINIT 0x00000001
|
|
#define DTF_1_CONFEXP 0x00000002
|
|
|
|
/* Flags in the DT_POSFLAG_1 entry effecting only the next DT_* entry. */
|
|
#define DF_P1_LAZYLOAD 0x00000001 /* Lazyload following object. */
|
|
#define DF_P1_GROUPPERM 0x00000002 /* Symbols from next object are not
|
|
generally available. */
|
|
|
|
/* Version definition sections. */
|
|
|
|
typedef struct
|
|
{
|
|
Elf32_Half vd_version; /* Version revision */
|
|
Elf32_Half vd_flags; /* Version information */
|
|
Elf32_Half vd_ndx; /* Version Index */
|
|
Elf32_Half vd_cnt; /* Number of associated aux entries */
|
|
Elf32_Word vd_hash; /* Version name hash value */
|
|
Elf32_Word vd_aux; /* Offset in bytes to verdaux array */
|
|
Elf32_Word vd_next; /* Offset in bytes to next verdef
|
|
entry */
|
|
} Elf32_Verdef;
|
|
|
|
/* Legal values for vd_version (version revision). */
|
|
#define VER_DEF_NONE 0 /* No version */
|
|
#define VER_DEF_CURRENT 1 /* Current version */
|
|
#define VER_DEF_NUM 2 /* Given version number */
|
|
|
|
/* Legal values for vd_flags (version information flags). */
|
|
#define VER_FLG_BASE 0x1 /* Version definition of file itself */
|
|
#define VER_FLG_WEAK 0x2 /* Weak version identifier */
|
|
|
|
/* Versym symbol index values. */
|
|
#define VER_NDX_LOCAL 0 /* Symbol is local. */
|
|
#define VER_NDX_GLOBAL 1 /* Symbol is global. */
|
|
#define VER_NDX_LORESERVE 0xff00 /* Beginning of reserved entries. */
|
|
#define VER_NDX_ELIMINATE 0xff01 /* Symbol is to be eliminated. */
|
|
|
|
/* Auxiliary version information. */
|
|
|
|
typedef struct
|
|
{
|
|
Elf32_Word vda_name; /* Version or dependency names */
|
|
Elf32_Word vda_next; /* Offset in bytes to next verdaux
|
|
entry */
|
|
} Elf32_Verdaux;
|
|
|
|
/* Version dependency section. */
|
|
|
|
typedef struct
|
|
{
|
|
Elf32_Half vn_version; /* Version of structure */
|
|
Elf32_Half vn_cnt; /* Number of associated aux entries */
|
|
Elf32_Word vn_file; /* Offset of filename for this
|
|
dependency */
|
|
Elf32_Word vn_aux; /* Offset in bytes to vernaux array */
|
|
Elf32_Word vn_next; /* Offset in bytes to next verneed
|
|
entry */
|
|
} Elf32_Verneed;
|
|
|
|
/* Legal values for vn_version (version revision). */
|
|
#define VER_NEED_NONE 0 /* No version */
|
|
#define VER_NEED_CURRENT 1 /* Current version */
|
|
#define VER_NEED_NUM 2 /* Given version number */
|
|
|
|
/* Auxiliary needed version information. */
|
|
|
|
typedef struct
|
|
{
|
|
Elf32_Word vna_hash; /* Hash value of dependency name */
|
|
Elf32_Half vna_flags; /* Dependency specific information */
|
|
Elf32_Half vna_other; /* Unused */
|
|
Elf32_Word vna_name; /* Dependency name string offset */
|
|
Elf32_Word vna_next; /* Offset in bytes to next vernaux
|
|
entry */
|
|
} Elf32_Vernaux;
|
|
|
|
|
|
/* Legal values for vna_flags. */
|
|
#define VER_FLG_WEAK 0x2 /* Weak version identifier */
|
|
|
|
|
|
/* Auxiliary vector. */
|
|
|
|
/* This vector is normally only used by the program interpreter. The
|
|
usual definition in an ABI supplement uses the name auxv_t. The
|
|
vector is not usually defined in a standard <elf.h> file, but it
|
|
can't hurt. We rename it to avoid conflicts. The sizes of these
|
|
types are an arrangement between the exec server and the program
|
|
interpreter, so we don't fully specify them here. */
|
|
|
|
typedef struct
|
|
{
|
|
uint32_t a_type; /* Entry type */
|
|
union
|
|
{
|
|
uint32_t a_val; /* Integer value */
|
|
/* We use to have pointer elements added here. We cannot do that,
|
|
though, since it does not work when using 32-bit definitions
|
|
on 64-bit platforms and vice versa. */
|
|
} a_un;
|
|
} Elf32_auxv_t;
|
|
|
|
/* Legal values for a_type (entry type). */
|
|
|
|
#define AT_NULL 0 /* End of vector */
|
|
#define AT_IGNORE 1 /* Entry should be ignored */
|
|
#define AT_EXECFD 2 /* File descriptor of program */
|
|
#define AT_PHDR 3 /* Program headers for program */
|
|
#define AT_PHENT 4 /* Size of program header entry */
|
|
#define AT_PHNUM 5 /* Number of program headers */
|
|
#define AT_PAGESZ 6 /* System page size */
|
|
#define AT_BASE 7 /* Base address of interpreter */
|
|
#define AT_FLAGS 8 /* Flags */
|
|
#define AT_ENTRY 9 /* Entry point of program */
|
|
#define AT_NOTELF 10 /* Program is not ELF */
|
|
#define AT_UID 11 /* Real uid */
|
|
#define AT_EUID 12 /* Effective uid */
|
|
#define AT_GID 13 /* Real gid */
|
|
#define AT_EGID 14 /* Effective gid */
|
|
#define AT_CLKTCK 17 /* Frequency of times() */
|
|
|
|
/* Some more special a_type values describing the hardware. */
|
|
#define AT_PLATFORM 15 /* String identifying platform. */
|
|
#define AT_HWCAP 16 /* Machine dependent hints about
|
|
processor capabilities. */
|
|
|
|
/* This entry gives some information about the FPU initialization
|
|
performed by the kernel. */
|
|
#define AT_FPUCW 18 /* Used FPU control word. */
|
|
|
|
/* Cache block sizes. */
|
|
#define AT_DCACHEBSIZE 19 /* Data cache block size. */
|
|
#define AT_ICACHEBSIZE 20 /* Instruction cache block size. */
|
|
#define AT_UCACHEBSIZE 21 /* Unified cache block size. */
|
|
|
|
/* A special ignored value for PPC, used by the kernel to control the
|
|
interpretation of the AUXV. Must be > 16. */
|
|
#define AT_IGNOREPPC 22 /* Entry should be ignored. */
|
|
|
|
#define AT_SECURE 23 /* Boolean, was exec setuid-like? */
|
|
|
|
#define AT_BASE_PLATFORM 24 /* String identifying real platforms.*/
|
|
|
|
#define AT_RANDOM 25 /* Address of 16 random bytes. */
|
|
|
|
#define AT_EXECFN 31 /* Filename of executable. */
|
|
|
|
/* Pointer to the global system page used for system calls and other
|
|
nice things. */
|
|
#define AT_SYSINFO 32
|
|
#define AT_SYSINFO_EHDR 33
|
|
|
|
/* Shapes of the caches. Bits 0-3 contains associativity; bits 4-7 contains
|
|
log2 of line size; mask those to get cache size. */
|
|
#define AT_L1I_CACHESHAPE 34
|
|
#define AT_L1D_CACHESHAPE 35
|
|
#define AT_L2_CACHESHAPE 36
|
|
#define AT_L3_CACHESHAPE 37
|
|
|
|
/* Note section contents. Each entry in the note section begins with
|
|
a header of a fixed form. */
|
|
|
|
typedef struct
|
|
{
|
|
Elf32_Word n_namesz; /* Length of the note's name. */
|
|
Elf32_Word n_descsz; /* Length of the note's descriptor. */
|
|
Elf32_Word n_type; /* Type of the note. */
|
|
} Elf32_Nhdr;
|
|
|
|
/* Known names of notes. */
|
|
|
|
/* Solaris entries in the note section have this name. */
|
|
#define ELF_NOTE_SOLARIS "SUNW Solaris"
|
|
|
|
/* Note entries for GNU systems have this name. */
|
|
#define ELF_NOTE_GNU "GNU"
|
|
|
|
|
|
/* Defined types of notes for Solaris. */
|
|
|
|
/* Value of descriptor (one word) is desired pagesize for the binary. */
|
|
#define ELF_NOTE_PAGESIZE_HINT 1
|
|
|
|
|
|
/* Defined note types for GNU systems. */
|
|
|
|
/* ABI information. The descriptor consists of words:
|
|
word 0: OS descriptor
|
|
word 1: major version of the ABI
|
|
word 2: minor version of the ABI
|
|
word 3: subminor version of the ABI
|
|
*/
|
|
#define NT_GNU_ABI_TAG 1
|
|
#define ELF_NOTE_ABI NT_GNU_ABI_TAG /* Old name. */
|
|
|
|
/* Known OSes. These values can appear in word 0 of an
|
|
NT_GNU_ABI_TAG note section entry. */
|
|
#define ELF_NOTE_OS_LINUX 0
|
|
#define ELF_NOTE_OS_GNU 1
|
|
#define ELF_NOTE_OS_SOLARIS2 2
|
|
#define ELF_NOTE_OS_FREEBSD 3
|
|
|
|
/* Synthetic hwcap information. The descriptor begins with two words:
|
|
word 0: number of entries
|
|
word 1: bitmask of enabled entries
|
|
Then follow variable-length entries, one byte followed by a
|
|
'\0'-terminated hwcap name string. The byte gives the bit
|
|
number to test if enabled, (1U << bit) & bitmask. */
|
|
#define NT_GNU_HWCAP 2
|
|
|
|
/* Build ID bits as generated by ld --build-id.
|
|
The descriptor consists of any nonzero number of bytes. */
|
|
#define NT_GNU_BUILD_ID 3
|
|
|
|
/* Version note generated by GNU gold containing a version string. */
|
|
#define NT_GNU_GOLD_VERSION 4
|
|
|
|
|
|
/* Move records. */
|
|
typedef struct
|
|
{
|
|
Elf32_Xword m_value; /* Symbol value. */
|
|
Elf32_Word m_info; /* Size and index. */
|
|
Elf32_Word m_poffset; /* Symbol offset. */
|
|
Elf32_Half m_repeat; /* Repeat count. */
|
|
Elf32_Half m_stride; /* Stride info. */
|
|
} Elf32_Move;
|
|
|
|
/* Macro to construct move records. */
|
|
#define ELF32_M_SYM(info) ((info) >> 8)
|
|
#define ELF32_M_SIZE(info) ((unsigned char) (info))
|
|
#define ELF32_M_INFO(sym, size) (((sym) << 8) + (unsigned char) (size))
|
|
|
|
/* Motorola 68k specific definitions. */
|
|
|
|
/* Values for Elf32_Ehdr.e_flags. */
|
|
#define EF_CPU32 0x00810000
|
|
|
|
/* Intel 80386 specific definitions. */
|
|
|
|
/* i386 relocs. */
|
|
|
|
#define R_386_NONE 0 /* No reloc */
|
|
#define R_386_32 1 /* Direct 32 bit */
|
|
#define R_386_PC32 2 /* PC relative 32 bit */
|
|
#define R_386_COPY 5 /* Copy symbol at runtime */
|
|
#define R_386_GLOB_DAT 6 /* Create GOT entry */
|
|
#define R_386_JMP_SLOT 7 /* Create PLT entry */
|
|
#define R_386_RELATIVE 8 /* Adjust by program base */
|
|
#define R_386_32PLT 11
|
|
#define R_386_TLS_TPOFF 14 /* Offset in static TLS block */
|
|
#define R_386_TLS_IE 15 /* Address of GOT entry for static TLS
|
|
block offset */
|
|
#define R_386_TLS_GOTIE 16 /* GOT entry for static TLS block
|
|
offset */
|
|
#define R_386_TLS_LE 17 /* Offset relative to static TLS
|
|
block */
|
|
#define R_386_TLS_GD 18 /* Direct 32 bit for GNU version of
|
|
general dynamic thread local data */
|
|
#define R_386_TLS_LDM 19 /* Direct 32 bit for GNU version of
|
|
local dynamic thread local data
|
|
in LE code */
|
|
#define R_386_16 20
|
|
#define R_386_PC16 21
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#define R_386_8 22
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#define R_386_PC8 23
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#define R_386_TLS_GD_32 24 /* Direct 32 bit for general dynamic
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thread local data */
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#define R_386_TLS_GD_PUSH 25 /* Tag for pushl in GD TLS code */
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#define R_386_TLS_GD_CALL 26 /* Relocation for call to
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__tls_get_addr() */
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#define R_386_TLS_GD_POP 27 /* Tag for popl in GD TLS code */
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#define R_386_TLS_LDM_32 28 /* Direct 32 bit for local dynamic
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thread local data in LE code */
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#define R_386_TLS_LDM_PUSH 29 /* Tag for pushl in LDM TLS code */
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#define R_386_TLS_LDM_CALL 30 /* Relocation for call to
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__tls_get_addr() in LDM code */
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#define R_386_TLS_LDM_POP 31 /* Tag for popl in LDM TLS code */
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#define R_386_TLS_LDO_32 32 /* Offset relative to TLS block */
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#define R_386_TLS_IE_32 33 /* GOT entry for negated static TLS
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block offset */
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#define R_386_TLS_LE_32 34 /* Negated offset relative to static
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TLS block */
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#define R_386_TLS_DTPMOD32 35 /* ID of module containing symbol */
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#define R_386_TLS_DTPOFF32 36 /* Offset in TLS block */
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#define R_386_TLS_TPOFF32 37 /* Negated offset in static TLS block */
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/* 38? */
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#define R_386_TLS_GOTDESC 39 /* GOT offset for TLS descriptor. */
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#define R_386_TLS_DESC_CALL 40 /* Marker of call through TLS
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descriptor for
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relaxation. */
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#define R_386_TLS_DESC 41 /* TLS descriptor containing
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pointer to code and to
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argument, returning the TLS
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offset for the symbol. */
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#define R_386_IRELATIVE 42 /* Adjust indirectly by program base */
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#define R_386_GOT32X 43 /* 32 bit GOT entry, relaxable */
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/* Keep this the last entry. */
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#define R_386_NUM 44
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#endif /* elf.h */
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