Subversion Repositories openrisc

#ifndef __ELF_H__

#define __ELF_H__

/* =================================================================

 *

 *      elf.h

 *

 * =================================================================

 * ####ECOSGPLCOPYRIGHTBEGIN####

 * -------------------------------------------

 * This file is part of eCos, the Embedded Configurable Operating System.

 * Copyright (C) 2005, 2008 Free Software Foundation, Inc.

 *

 * eCos 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 or (at your option) any later

 * version.

 *

 * eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,

 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

 *

 * As a special exception, if other files instantiate templates or use

 * macros or inline functions from this file, or you compile this file

 * and link it with other works to produce a work based on this file,

 * this file does not by itself cause the resulting work to be covered by

 * the GNU General Public License. However the source code for this file

 * must still be made available in accordance with section (3) of the GNU

 * General Public License v2.

 *

 * This exception does not invalidate any other reasons why a work based

 * on this file might be covered by the GNU General Public License.

 * -------------------------------------------

 * ####ECOSGPLCOPYRIGHTEND####

 * =================================================================

 * #####DESCRIPTIONBEGIN####

 *

 *  Author(s):    Anthony Tonizzo (atonizzo@gmail.com)

 *  Date:         2005-05-13

 *  Purpose:

 *  Description:

 *

 * ####DESCRIPTIONEND####

 *

 * =================================================================

 */

typedef cyg_uint32     Elf32_Addr;

typedef cyg_uint16     Elf32_Half;

typedef cyg_uint32     Elf32_Off;

typedef cyg_int32      Elf32_Sword;

typedef cyg_uint32     Elf32_Word;

#define EI_NIDENT      16

typedef struct

{

    unsigned char e_ident[EI_NIDENT];

    Elf32_Half e_type;

    Elf32_Half e_machine;

    Elf32_Word e_version;

    Elf32_Addr e_entry;

    Elf32_Off  e_phoff;

    Elf32_Off  e_shoff;

    Elf32_Word e_flags;

    Elf32_Half e_ehsize;

    Elf32_Half e_phentsize;

    Elf32_Half e_phnum;

    Elf32_Half e_shentsize;

    Elf32_Half e_shnum;

    Elf32_Half e_shstrndx;

} Elf32_Ehdr;

// The ELFCLASS* macros are the defined values of e_ident[EI_CLASS].

#define ELFCLASSNONE      0   // Invalid class.

#define ELFCLASS32        1   // 32-bit objects.

#define ELFCLASS64        2   // 64-bit objects.

// The ELFDATA* macros are the allowed values of e_ident[EI_DATA].

#define ELFDATA2LSB     1 // Little Endian

#define ELFDATA2MSB     2 // Big Endian.

// The ET_* macros define the values of the e_type field of the ElfXX_Ehdr

//   structure.

#define ET_NONE         0 // No file type.

#define ET_REL          1 // Relocatable file.

#define ET_EXEC         2 // Executable file.

#define ET_DYN          3 // Shared object file.

#define ET_CORE         4 // Core file.

#define ET_LOPROC       0xff00 // Processor-specific.

// The ELFMAG* macros are the values of e_ident[EI_MAG0-4]

#define ELFMAG0         0x7f      // magic number, byte 0 

#define ELFMAG1         'E'       // magic number, byte 1 

#define ELFMAG2         'L'       // magic number, byte 2 

#define ELFMAG3         'F'       // magic number, byte 3 

#define ELFMAG          "\177ELF" // magic string 

#define SELFMAG         4         // magic string length 

#define EI_MAG0         0

#define EI_MAG1         1

#define EI_MAG2         2

#define EI_MAG3         3

#define EI_CLASS        4

#define EI_DATA         5 

#define EI_VERSION      6

#define EI_PAD          7 

typedef struct

{

    Elf32_Word sh_name;                 // section name.

    Elf32_Word sh_type;         // SHT_...

    Elf32_Word sh_flags;        // SHF_...

    Elf32_Addr sh_addr;         // virtual address

    Elf32_Off  sh_offset;       // file offset

    Elf32_Word sh_size;         // section size

    Elf32_Word sh_link;         // misc info 

    Elf32_Word sh_info;         // misc info 

    Elf32_Word sh_addralign;    // memory alignment

    Elf32_Word sh_entsize;      // entry size if table.

} Elf32_Shdr;

// Symbols table entry.

typedef struct

{

    Elf32_Word    st_name;                // Symbol name (string tbl index).

    Elf32_Addr    st_value;               // Symbol value.

    Elf32_Word    st_size;                // Symbol size.

    unsigned char st_info;                // Symbol type and binding.

    unsigned char st_other;               // Symbol visibility.

    Elf32_Half    st_shndx;               // Section index.

} Elf32_Sym;

typedef struct

{

    Elf32_Addr r_offset;

    Elf32_Word r_info;

} Elf32_Rel;

typedef struct

{

    Elf32_Addr  r_offset;

    Elf32_Word  r_info;

    Elf32_Sword r_addend;

} Elf32_Rela;

#define SHT_NULL        0

#define SHT_PROGBITS    1

#define SHT_SYMTAB      2

#define SHT_STRTAB      3

#define SHT_RELA        4

#define SHT_HASH        5

#define SHT_DYNAMIC     6

#define SHT_NOTE        7

#define SHT_NOBITS      8

#define SHT_REL         9

#define SHT_SHLIB      10

#define SHT_DYNSYM     11

#define SHN_UNDEF       0

#define SHN_LORESERVE   0xff00

#define SHN_LOPROC      0xff00

#define SHN_HIPROC      0xff1f

#define SHN_ABS         0xfff1

#define SHN_COMMON      0xfff2

#define SHN_HIRESERVE   0xffff

#define STT_NOTYPE            0

#define STT_OBJECT            1

#define STT_FUNC              2

#define STT_SECTION           3

#define STT_FILE              4

#define STT_LOPROC           13

#define STT_HIPROC           15

#define STB_LOCAL            0

#define STB_GLOBAL           1

#define STB_WEAK             2

#define STB_LOPROC          13

#define STB_HIPROC          15

// The ELF_STRING_xxx macros are names of common sections

#define ELF_STRING_bss          ".bss"

#define ELF_STRING_hbss         ".hbss"

#define ELF_STRING_sbss         ".sbss"

#define ELF_STRING_tbss         ".tbss"

#define ELF_STRING_data         ".data"

#define ELF_STRING_hdata        ".hdata"

#define ELF_STRING_sdata        ".sdata"

#define ELF_STRING_sdata2       ".sdata2"

#define ELF_STRING_fini         ".fini"

#define ELF_STRING_init         ".init"

#define ELF_STRING_interp       ".interp"

#define ELF_STRING_rodata       ".rodata"

#define ELF_STRING_text         ".text"

#define ELF_STRING_comment      ".comment"

#define ELF_STRING_dynamic      ".dynamic"

#define ELF_STRING_dynstr       ".dynstr"

#define ELF_STRING_dynsym       ".dynsym"

#define ELF_STRING_dlt          ".dlt"

#define ELF_STRING_note         ".note"

#define ELF_STRING_opd          ".opd"

#define ELF_STRING_plt          ".plt"

#define ELF_STRING_bss_rela     ".rela.bss"

#define ELF_STRING_hbss_rela    ".rela.hbss"

#define ELF_STRING_data_rela    ".rela.data"

#define ELF_STRING_dlt_rela     ".rela.dlt"

#define ELF_STRING_plt_rela     ".rela.plt"

#define ELF_STRING_sdata_rela   ".rela.sdata"

#define ELF_STRING_strtab       ".strtab"

#define ELF_STRING_symtab       ".symtab"

#define ELF_STRING_hash         ".hash"

#define ELF_STRING_shstrtab     ".shstrtab"

#define ELF_STRING_shsymtab     ".shsymtab"

#define ELF_STRING_rela         ".rela"

#define ELF_STRING_rel          ".rel"

#define ELF32_R_SYM(i)  ((i)>>8)

#define ELF32_R_TYPE(i) ((unsigned char)(i))

#define ELF32_ST_BIND(i)  ((i)>>4)

#define ELF32_ST_TYPE(i)  ((i)&0x0F)

#endif