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/* ELF support for BFD.
Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
Written by Fred Fish @ Cygnus Support, from information published
in "UNIX System V Release 4, Programmers Guide: ANSI C and
Programming Support Tools".
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* This file is part of ELF support for BFD, and contains the portions
that describe how ELF is represented internally in the BFD library.
I.E. it describes the in-memory representation of ELF. It requires
the elf-common.h file which contains the portions that are common to
both the internal and external representations. */
/* NOTE that these structures are not kept in the same order as they appear
in the object file. In some cases they've been reordered for more optimal
packing under various circumstances. */
/* ELF Header */
#define EI_NIDENT 16 /* Size of e_ident[] */
typedef struct elf_internal_ehdr {
unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */
bfd_vma e_entry; /* Entry point virtual address */
bfd_signed_vma e_phoff; /* Program header table file offset */
bfd_signed_vma e_shoff; /* Section header table file offset */
unsigned long e_version; /* Identifies object file version */
unsigned long e_flags; /* Processor-specific flags */
unsigned short e_type; /* Identifies object file type */
unsigned short e_machine; /* Specifies required architecture */
unsigned short e_ehsize; /* ELF header size in bytes */
unsigned short e_phentsize; /* Program header table entry size */
unsigned short e_phnum; /* Program header table entry count */
unsigned short e_shentsize; /* Section header table entry size */
unsigned short e_shnum; /* Section header table entry count */
unsigned short e_shstrndx; /* Section header string table index */
} Elf_Internal_Ehdr;
#define elf32_internal_ehdr elf_internal_ehdr
#define Elf32_Internal_Ehdr Elf_Internal_Ehdr
#define elf64_internal_ehdr elf_internal_ehdr
#define Elf64_Internal_Ehdr Elf_Internal_Ehdr
/* Program header */
struct elf_internal_phdr {
unsigned long p_type; /* Identifies program segment type */
unsigned long p_flags; /* Segment flags */
bfd_vma p_offset; /* Segment file offset */
bfd_vma p_vaddr; /* Segment virtual address */
bfd_vma p_paddr; /* Segment physical address */
bfd_vma p_filesz; /* Segment size in file */
bfd_vma p_memsz; /* Segment size in memory */
bfd_vma p_align; /* Segment alignment, file & memory */
};
typedef struct elf_internal_phdr Elf_Internal_Phdr;
#define elf32_internal_phdr elf_internal_phdr
#define Elf32_Internal_Phdr Elf_Internal_Phdr
#define elf64_internal_phdr elf_internal_phdr
#define Elf64_Internal_Phdr Elf_Internal_Phdr
/* Section header */
typedef struct elf_internal_shdr {
unsigned int sh_name; /* Section name, index in string tbl */
unsigned int sh_type; /* Type of section */
bfd_vma sh_flags; /* Miscellaneous section attributes */
bfd_vma sh_addr; /* Section virtual addr at execution */
bfd_size_type sh_size; /* Size of section in bytes */
bfd_size_type sh_entsize; /* Entry size if section holds table */
unsigned long sh_link; /* Index of another section */
unsigned long sh_info; /* Additional section information */
file_ptr sh_offset; /* Section file offset */
unsigned int sh_addralign; /* Section alignment */
/* The internal rep also has some cached info associated with it. */
PTR rawdata; /* null if unused... */
PTR contents; /* null if unused... */
bfd_vma size; /* size of contents (0 if unused) */
} Elf_Internal_Shdr;
#define elf32_internal_shdr elf_internal_shdr
#define Elf32_Internal_Shdr Elf_Internal_Shdr
#define elf64_internal_shdr elf_internal_shdr
#define Elf64_Internal_Shdr Elf_Internal_Shdr
/* Symbol table entry */
struct elf_internal_sym {
bfd_vma st_value; /* Value of the symbol */
bfd_vma st_size; /* Associated symbol size */
unsigned long st_name; /* Symbol name, index in string tbl */
unsigned char st_info; /* Type and binding attributes */
unsigned char st_other; /* No defined meaning, 0 */
unsigned short st_shndx; /* Associated section index */
};
typedef struct elf_internal_sym Elf_Internal_Sym;
#define elf32_internal_sym elf_internal_sym
#define elf64_internal_sym elf_internal_sym
#define Elf32_Internal_Sym Elf_Internal_Sym
#define Elf64_Internal_Sym Elf_Internal_Sym
/* Note segments */
typedef struct elf_internal_note {
unsigned long namesz; /* Size of entry's owner string */
unsigned long descsz; /* Size of the note descriptor */
unsigned long type; /* Interpretation of the descriptor */
char name[1]; /* Start of the name+desc data */
} Elf_Internal_Note;
#define Elf32_Internal_Note Elf_Internal_Note
#define elf32_internal_note elf_internal_note
/* Relocation Entries */
typedef struct elf_internal_rel {
bfd_vma r_offset; /* Location at which to apply the action */
/* This needs to support 64-bit values in elf64. */
bfd_vma r_info; /* index and type of relocation */
} Elf_Internal_Rel;
#define elf32_internal_rel elf_internal_rel
#define Elf32_Internal_Rel Elf_Internal_Rel
#define elf64_internal_rel elf_internal_rel
#define Elf64_Internal_Rel Elf_Internal_Rel
typedef struct elf_internal_rela {
bfd_vma r_offset; /* Location at which to apply the action */
bfd_vma r_info; /* Index and Type of relocation */
bfd_signed_vma r_addend; /* Constant addend used to compute value */
} Elf_Internal_Rela;
#define elf32_internal_rela elf_internal_rela
#define elf64_internal_rela elf_internal_rela
#define Elf32_Internal_Rela Elf_Internal_Rela
#define Elf64_Internal_Rela Elf_Internal_Rela
/* dynamic section structure */
typedef struct elf_internal_dyn {
/* This needs to support 64-bit values in elf64. */
bfd_vma d_tag; /* entry tag value */
union {
/* This needs to support 64-bit values in elf64. */
bfd_vma d_val;
bfd_vma d_ptr;
} d_un;
} Elf_Internal_Dyn;
#define elf32_internal_dyn elf_internal_dyn
#define elf64_internal_dyn elf_internal_dyn
#define Elf32_Internal_Dyn Elf_Internal_Dyn
#define Elf64_Internal_Dyn Elf_Internal_Dyn
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