199 lines
7.3 KiB
C
199 lines
7.3 KiB
C
/* ELF support for BFD.
|
|
Copyright (C) 1991, 1992 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.
|
|
|
|
$Id: internal.h,v 1.1 1994/01/28 12:42:48 pk Exp $
|
|
*/
|
|
|
|
|
|
/* 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. */
|
|
|
|
/* Types used by various structures, functions, etc. */
|
|
|
|
typedef unsigned long Elf32_Addr; /* Unsigned program address */
|
|
typedef unsigned long Elf32_Off; /* Unsigned file offset */
|
|
typedef long Elf32_Sword; /* Signed large integer */
|
|
typedef unsigned long Elf32_Word; /* Unsigned large integer */
|
|
typedef unsigned short Elf32_Half; /* Unsigned medium integer */
|
|
typedef unsigned char Elf32_Char; /* Unsigned tiny integer */
|
|
|
|
#ifdef HOST_64_BIT
|
|
typedef unsigned HOST_64_BIT Elf64_Addr;
|
|
typedef unsigned HOST_64_BIT Elf64_Off;
|
|
typedef HOST_64_BIT Elf64_Sxword;
|
|
typedef unsigned HOST_64_BIT Elf64_Xword;
|
|
#endif
|
|
typedef long Elf64_Sword;
|
|
typedef unsigned long Elf64_Word;
|
|
typedef unsigned short Elf64_Half;
|
|
|
|
/* 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. */
|
|
void *rawdata; /* null if unused... */
|
|
void *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 {
|
|
Elf32_Sword d_tag; /* entry tag value */
|
|
union {
|
|
Elf32_Word d_val;
|
|
Elf32_Addr d_ptr;
|
|
} d_un;
|
|
} Elf32_Internal_Dyn;
|
|
|
|
#ifdef HOST_64_BIT
|
|
typedef struct {
|
|
Elf64_Xword d_tag; /* entry tag value */
|
|
union {
|
|
Elf64_Xword d_val;
|
|
Elf64_Addr d_ptr;
|
|
} d_un;
|
|
} Elf64_Internal_Dyn;
|
|
#endif
|