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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [include/] [elf/] [external.h] - Blame information for rev 21

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1 17 khays
/* ELF support for BFD.
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   Copyright 1991, 1992, 1993, 1995, 1997, 1998, 1999, 2001, 2003, 2005,
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   2008, 2010 Free Software Foundation, Inc.
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   Written by Fred Fish @ Cygnus Support, from information published
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   in "UNIX System V Release 4, Programmers Guide: ANSI C and
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   Programming Support Tools".
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   This file is part of BFD, the Binary File Descriptor library.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program 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
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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   MA 02110-1301, USA.  */
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/* This file is part of ELF support for BFD, and contains the portions
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   that describe how ELF is represented externally by the BFD library.
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   I.E. it describes the in-file representation of ELF.  It requires
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   the elf/common.h file which contains the portions that are common to
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   both the internal and external representations.  */
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/* The 64-bit stuff is kind of random.  Perhaps someone will publish a
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   spec someday.  */
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#ifndef _ELF_EXTERNAL_H
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#define _ELF_EXTERNAL_H
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/* Special section indices, which may show up in st_shndx fields, among
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   other places.  */
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#define SHN_LORESERVE   0xFF00          /* Begin range of reserved indices */
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#define SHN_LOPROC      0xFF00          /* Begin range of appl-specific */
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#define SHN_HIPROC      0xFF1F          /* End range of appl-specific */
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#define SHN_LOOS        0xFF20          /* OS specific semantics, lo */
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#define SHN_HIOS        0xFF3F          /* OS specific semantics, hi */
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#define SHN_ABS         0xFFF1          /* Associated symbol is absolute */
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#define SHN_COMMON      0xFFF2          /* Associated symbol is in common */
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#define SHN_XINDEX      0xFFFF          /* Section index is held elsewhere */
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#define SHN_HIRESERVE   0xFFFF          /* End range of reserved indices */
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/* ELF Header (32-bit implementations) */
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typedef struct {
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  unsigned char e_ident[16];            /* ELF "magic number" */
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  unsigned char e_type[2];              /* Identifies object file type */
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  unsigned char e_machine[2];           /* Specifies required architecture */
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  unsigned char e_version[4];           /* Identifies object file version */
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  unsigned char e_entry[4];             /* Entry point virtual address */
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  unsigned char e_phoff[4];             /* Program header table file offset */
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  unsigned char e_shoff[4];             /* Section header table file offset */
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  unsigned char e_flags[4];             /* Processor-specific flags */
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  unsigned char e_ehsize[2];            /* ELF header size in bytes */
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  unsigned char e_phentsize[2];         /* Program header table entry size */
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  unsigned char e_phnum[2];             /* Program header table entry count */
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  unsigned char e_shentsize[2];         /* Section header table entry size */
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  unsigned char e_shnum[2];             /* Section header table entry count */
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  unsigned char e_shstrndx[2];          /* Section header string table index */
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} Elf32_External_Ehdr;
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typedef struct {
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  unsigned char e_ident[16];            /* ELF "magic number" */
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  unsigned char e_type[2];              /* Identifies object file type */
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  unsigned char e_machine[2];           /* Specifies required architecture */
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  unsigned char e_version[4];           /* Identifies object file version */
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  unsigned char e_entry[8];             /* Entry point virtual address */
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  unsigned char e_phoff[8];             /* Program header table file offset */
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  unsigned char e_shoff[8];             /* Section header table file offset */
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  unsigned char e_flags[4];             /* Processor-specific flags */
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  unsigned char e_ehsize[2];            /* ELF header size in bytes */
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  unsigned char e_phentsize[2];         /* Program header table entry size */
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  unsigned char e_phnum[2];             /* Program header table entry count */
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  unsigned char e_shentsize[2];         /* Section header table entry size */
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  unsigned char e_shnum[2];             /* Section header table entry count */
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  unsigned char e_shstrndx[2];          /* Section header string table index */
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} Elf64_External_Ehdr;
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/* Program header */
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typedef struct {
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  unsigned char p_type[4];              /* Identifies program segment type */
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  unsigned char p_offset[4];            /* Segment file offset */
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  unsigned char p_vaddr[4];             /* Segment virtual address */
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  unsigned char p_paddr[4];             /* Segment physical address */
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  unsigned char p_filesz[4];            /* Segment size in file */
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  unsigned char p_memsz[4];             /* Segment size in memory */
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  unsigned char p_flags[4];             /* Segment flags */
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  unsigned char p_align[4];             /* Segment alignment, file & memory */
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} Elf32_External_Phdr;
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typedef struct {
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  unsigned char p_type[4];              /* Identifies program segment type */
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  unsigned char p_flags[4];             /* Segment flags */
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  unsigned char p_offset[8];            /* Segment file offset */
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  unsigned char p_vaddr[8];             /* Segment virtual address */
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  unsigned char p_paddr[8];             /* Segment physical address */
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  unsigned char p_filesz[8];            /* Segment size in file */
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  unsigned char p_memsz[8];             /* Segment size in memory */
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  unsigned char p_align[8];             /* Segment alignment, file & memory */
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} Elf64_External_Phdr;
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/* Section header */
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typedef struct {
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  unsigned char sh_name[4];             /* Section name, index in string tbl */
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  unsigned char sh_type[4];             /* Type of section */
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  unsigned char sh_flags[4];            /* Miscellaneous section attributes */
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  unsigned char sh_addr[4];             /* Section virtual addr at execution */
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  unsigned char sh_offset[4];           /* Section file offset */
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  unsigned char sh_size[4];             /* Size of section in bytes */
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  unsigned char sh_link[4];             /* Index of another section */
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  unsigned char sh_info[4];             /* Additional section information */
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  unsigned char sh_addralign[4];        /* Section alignment */
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  unsigned char sh_entsize[4];          /* Entry size if section holds table */
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} Elf32_External_Shdr;
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typedef struct {
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  unsigned char sh_name[4];             /* Section name, index in string tbl */
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  unsigned char sh_type[4];             /* Type of section */
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  unsigned char sh_flags[8];            /* Miscellaneous section attributes */
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  unsigned char sh_addr[8];             /* Section virtual addr at execution */
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  unsigned char sh_offset[8];           /* Section file offset */
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  unsigned char sh_size[8];             /* Size of section in bytes */
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  unsigned char sh_link[4];             /* Index of another section */
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  unsigned char sh_info[4];             /* Additional section information */
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  unsigned char sh_addralign[8];        /* Section alignment */
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  unsigned char sh_entsize[8];          /* Entry size if section holds table */
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} Elf64_External_Shdr;
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/* Symbol table entry */
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typedef struct {
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  unsigned char st_name[4];             /* Symbol name, index in string tbl */
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  unsigned char st_value[4];            /* Value of the symbol */
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  unsigned char st_size[4];             /* Associated symbol size */
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  unsigned char st_info[1];             /* Type and binding attributes */
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  unsigned char st_other[1];            /* No defined meaning, 0 */
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  unsigned char st_shndx[2];            /* Associated section index */
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} Elf32_External_Sym;
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typedef struct {
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  unsigned char st_name[4];             /* Symbol name, index in string tbl */
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  unsigned char st_info[1];             /* Type and binding attributes */
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  unsigned char st_other[1];            /* No defined meaning, 0 */
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  unsigned char st_shndx[2];            /* Associated section index */
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  unsigned char st_value[8];            /* Value of the symbol */
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  unsigned char st_size[8];             /* Associated symbol size */
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} Elf64_External_Sym;
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typedef struct {
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  unsigned char est_shndx[4];           /* Section index */
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} Elf_External_Sym_Shndx;
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/* Note segments */
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typedef struct {
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  unsigned char namesz[4];              /* Size of entry's owner string */
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  unsigned char descsz[4];              /* Size of the note descriptor */
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  unsigned char type[4];                /* Interpretation of the descriptor */
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  char          name[1];                /* Start of the name+desc data */
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} Elf_External_Note;
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/* Relocation Entries */
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typedef struct {
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  unsigned char r_offset[4];    /* Location at which to apply the action */
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  unsigned char r_info[4];      /* index and type of relocation */
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} Elf32_External_Rel;
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typedef struct {
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  unsigned char r_offset[4];    /* Location at which to apply the action */
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  unsigned char r_info[4];      /* index and type of relocation */
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  unsigned char r_addend[4];    /* Constant addend used to compute value */
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} Elf32_External_Rela;
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typedef struct {
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  unsigned char r_offset[8];    /* Location at which to apply the action */
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  unsigned char r_info[8];      /* index and type of relocation */
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} Elf64_External_Rel;
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typedef struct {
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  unsigned char r_offset[8];    /* Location at which to apply the action */
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  unsigned char r_info[8];      /* index and type of relocation */
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  unsigned char r_addend[8];    /* Constant addend used to compute value */
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} Elf64_External_Rela;
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/* dynamic section structure */
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typedef struct {
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  unsigned char d_tag[4];               /* entry tag value */
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  union {
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    unsigned char       d_val[4];
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    unsigned char       d_ptr[4];
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  } d_un;
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} Elf32_External_Dyn;
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typedef struct {
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  unsigned char d_tag[8];               /* entry tag value */
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  union {
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    unsigned char       d_val[8];
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    unsigned char       d_ptr[8];
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  } d_un;
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} Elf64_External_Dyn;
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/* The version structures are currently size independent.  They are
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   named without a 32 or 64.  If that ever changes, these structures
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   will need to be renamed.  */
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/* This structure appears in a SHT_GNU_verdef section.  */
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typedef struct {
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  unsigned char         vd_version[2];
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  unsigned char         vd_flags[2];
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  unsigned char         vd_ndx[2];
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  unsigned char         vd_cnt[2];
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  unsigned char         vd_hash[4];
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  unsigned char         vd_aux[4];
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  unsigned char         vd_next[4];
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} Elf_External_Verdef;
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/* This structure appears in a SHT_GNU_verdef section.  */
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typedef struct {
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  unsigned char         vda_name[4];
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  unsigned char         vda_next[4];
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} Elf_External_Verdaux;
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/* This structure appears in a SHT_GNU_verneed section.  */
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typedef struct {
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  unsigned char         vn_version[2];
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  unsigned char         vn_cnt[2];
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  unsigned char         vn_file[4];
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  unsigned char         vn_aux[4];
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  unsigned char         vn_next[4];
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} Elf_External_Verneed;
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/* This structure appears in a SHT_GNU_verneed section.  */
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typedef struct {
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  unsigned char         vna_hash[4];
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  unsigned char         vna_flags[2];
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  unsigned char         vna_other[2];
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  unsigned char         vna_name[4];
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  unsigned char         vna_next[4];
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} Elf_External_Vernaux;
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/* This structure appears in a SHT_GNU_versym section.  This is not a
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   standard ELF structure; ELF just uses Elf32_Half.  */
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typedef struct {
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  unsigned char         vs_vers[2];
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} ATTRIBUTE_PACKED  Elf_External_Versym;
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/* Structure for syminfo section.  */
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typedef struct
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{
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  unsigned char         si_boundto[2];
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  unsigned char         si_flags[2];
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} Elf_External_Syminfo;
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/* This structure appears on the stack and in NT_AUXV core file notes.  */
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typedef struct
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{
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  unsigned char         a_type[4];
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  unsigned char         a_val[4];
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} Elf32_External_Auxv;
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typedef struct
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{
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  unsigned char         a_type[8];
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  unsigned char         a_val[8];
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} Elf64_External_Auxv;
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/* Size of SHT_GROUP section entry.  */
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#define GRP_ENTRY_SIZE          4
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#endif /* _ELF_EXTERNAL_H */

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