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/* external.h -- External COFF structures
Copyright (C) 2001-2021 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 3 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 */
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