Subversion Repositories openrisc_2011-10-31

/* external.h  -- External COFF structures

   Copyright 2001, 2006 Free Software Foundation, Inc.

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

#ifndef COFF_EXTERNAL_H

#define COFF_EXTERNAL_H

#ifndef DO_NOT_DEFINE_FILHDR

/********************** FILE HEADER **********************/

struct external_filehdr

  {

    char f_magic[2];    /* magic number                 */

    char f_nscns[2];    /* number of sections           */

    char f_timdat[4];   /* time & date stamp            */

    char f_symptr[4];   /* file pointer to symtab       */

    char f_nsyms[4];    /* number of symtab entries     */

    char f_opthdr[2];   /* sizeof(optional hdr)         */

    char f_flags[2];    /* flags                        */

  };

#define FILHDR  struct external_filehdr

#define FILHSZ  20

#endif

#ifndef DO_NOT_DEFINE_AOUTHDR

/********************** AOUT "OPTIONAL HEADER" **********************/

typedef struct external_aouthdr

  {

    char magic[2];      /* type of file                         */

    char vstamp[2];     /* version stamp                        */

    char tsize[4];      /* text size in bytes, padded to FW bdry*/

    char dsize[4];      /* initialized data "  "                */

    char bsize[4];      /* uninitialized data "   "             */

    char entry[4];      /* entry pt.                            */

    char text_start[4]; /* base of text used for this file      */

    char data_start[4]; /* base of data used for this file      */

  } ATTRIBUTE_PACKED

AOUTHDR;

#define AOUTHDRSZ 28

#define AOUTSZ 28

typedef struct external_aouthdr64

{

  char magic[2];        /* Type of file.                        */

  char vstamp[2];       /* Version stamp.                       */

  char tsize[4];        /* Text size in bytes, padded to FW bdry*/

  char dsize[4];        /* Initialized data "  ".               */

  char bsize[4];        /* Uninitialized data "   ".            */

  char entry[4];        /* Entry pt.                            */

  char text_start[4];   /* Base of text used for this file.     */

}

AOUTHDR64;

#define AOUTHDRSZ64     24

#endif /* not DO_NOT_DEFINE_AOUTHDR */

#ifndef DO_NOT_DEFINE_SCNHDR

/********************** SECTION HEADER **********************/

struct external_scnhdr

  {

    char s_name[8];     /* section name                         */

    char s_paddr[4];    /* physical address, aliased s_nlib     */

    char s_vaddr[4];    /* virtual address                      */

    char s_size[4];     /* section size                         */

    char s_scnptr[4];   /* file ptr to raw data for section     */

    char s_relptr[4];   /* file ptr to relocation               */

    char s_lnnoptr[4];  /* file ptr to line numbers             */

    char s_nreloc[2];   /* number of relocation entries         */

    char s_nlnno[2];    /* number of line number entries        */

    char s_flags[4];    /* flags                                */

  };

#define SCNHDR  struct external_scnhdr

#define SCNHSZ  40

/* Names of "special" sections.  */

#define _TEXT    ".text"

#define _DATA    ".data"

#define _BSS     ".bss"

#define _COMMENT ".comment"

#define _LIB     ".lib"

#endif /* not DO_NOT_DEFINE_SCNHDR */

#ifndef DO_NOT_DEFINE_LINENO

/********************** LINE NUMBERS **********************/

#ifndef L_LNNO_SIZE

#error  L_LNNO_SIZE needs to be defined

#endif

/* 1 line number entry for every "breakpointable" source line in a section.

   Line numbers are grouped on a per function basis; first entry in a function

   grouping will have l_lnno = 0 and in place of physical address will be the

   symbol table index of the function name.  */

struct external_lineno

{

  union

  {

    char l_symndx[4];   /* function name symbol index, iff l_lnno == 0*/

    char l_paddr[4];    /* (physical) address of line number    */

  } l_addr;

  char l_lnno[L_LNNO_SIZE];     /* line number          */

};

#define LINENO  struct external_lineno

#define LINESZ  (4 + L_LNNO_SIZE)

#if L_LNNO_SIZE == 4

#define GET_LINENO_LNNO(abfd, ext)      H_GET_32 (abfd,      (ext->l_lnno))

#define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_32 (abfd, val, (ext->l_lnno))

#endif

#if L_LNNO_SIZE == 2

#define GET_LINENO_LNNO(abfd, ext)      H_GET_16 (abfd,      (ext->l_lnno))

#define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_16 (abfd, val, (ext->l_lnno))

#endif

#endif /* not DO_NOT_DEFINE_LINENO */

#ifndef DO_NOT_DEFINE_SYMENT

/********************** SYMBOLS **********************/

#define E_SYMNMLEN      8       /* # characters in a symbol name        */

#ifndef E_FILNMLEN

#define E_FILNMLEN      14

#endif

#define E_DIMNUM        4       /* # array dimensions in auxiliary entry */

struct external_syment

{

  union

  {

    char e_name[E_SYMNMLEN];

    struct

    {

      char e_zeroes[4];

      char e_offset[4];

    } e;

  } e;

  char e_value[4];

  char e_scnum[2];

  char e_type[2];

  char e_sclass[1];

  char e_numaux[1];

} ATTRIBUTE_PACKED ;

#define SYMENT  struct external_syment

#define SYMESZ  18      

#ifndef N_BTMASK

#define N_BTMASK        0xf

#endif

#ifndef N_TMASK

#define N_TMASK         0x30

#endif

#ifndef N_BTSHFT

#define N_BTSHFT        4

#endif

#ifndef N_TSHIFT

#define N_TSHIFT        2

#endif

#endif /* not DO_NOT_DEFINE_SYMENT */

#ifndef DO_NOT_DEFINE_AUXENT

union external_auxent

{

  struct

  {

    char x_tagndx[4];           /* str, un, or enum tag indx */

    union

    {

      struct

      {

        char  x_lnno[2]; /* declaration line number */

        char  x_size[2]; /* str/union/array size */

      } x_lnsz;

      char x_fsize[4];  /* size of function */

    } x_misc;

    union

    {

      struct            /* if ISFCN, tag, or .bb */

      {

        char x_lnnoptr[4];      /* ptr to fcn line # */

        char x_endndx[4];       /* entry ndx past block end */

      } x_fcn;

      struct            /* if ISARY, up to 4 dimen. */

      {

        char x_dimen[E_DIMNUM][2];

      } x_ary;

    } x_fcnary;

    char x_tvndx[2];    /* tv index */

  } x_sym;

  union

  {

    char x_fname[E_FILNMLEN];

    struct

    {

      char x_zeroes[4];

      char x_offset[4];

    } x_n;

  } x_file;

  struct

  {

    char x_scnlen[4];   /* section length */

    char x_nreloc[2];   /* # relocation entries */

    char x_nlinno[2];   /* # line numbers */

#ifdef INCLUDE_COMDAT_FIELDS_IN_AUXENT

    char x_checksum[4];            /* section COMDAT checksum         */

    char x_associated[2];          /* COMDAT associated section index */

    char x_comdat[1];              /* COMDAT selection number         */

#endif    

  } x_scn;

  struct

  {

    char x_tvfill[4];   /* tv fill value */

    char x_tvlen[2];    /* length of .tv */

    char x_tvran[2][2]; /* tv range */

  } x_tv;               /* info about .tv section (in auxent of symbol .tv)) */

} ATTRIBUTE_PACKED ;

#define AUXENT  union external_auxent

#define AUXESZ  18

#define _ETEXT  "etext"

#endif /* not DO_NOT_DEFINE_AUXENT */

#endif /* COFF_EXTERNAL_H */