mirror of
https://github.com/autc04/Retro68.git
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270 lines
6.8 KiB
C
270 lines
6.8 KiB
C
/* external.h -- External COFF structures
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Copyright (C) 2001-2014 Free Software Foundation, Inc.
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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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#ifndef COFF_EXTERNAL_H
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#define COFF_EXTERNAL_H
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#ifndef DO_NOT_DEFINE_FILHDR
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/********************** FILE HEADER **********************/
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struct external_filehdr
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{
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char f_magic[2]; /* magic number */
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char f_nscns[2]; /* number of sections */
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char f_timdat[4]; /* time & date stamp */
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char f_symptr[4]; /* file pointer to symtab */
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char f_nsyms[4]; /* number of symtab entries */
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char f_opthdr[2]; /* sizeof(optional hdr) */
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char f_flags[2]; /* flags */
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};
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#define FILHDR struct external_filehdr
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#define FILHSZ 20
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#endif
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#ifndef DO_NOT_DEFINE_AOUTHDR
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/********************** AOUT "OPTIONAL HEADER" **********************/
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typedef struct external_aouthdr
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{
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char magic[2]; /* type of file */
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char vstamp[2]; /* version stamp */
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char tsize[4]; /* text size in bytes, padded to FW bdry*/
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char dsize[4]; /* initialized data " " */
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char bsize[4]; /* uninitialized data " " */
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char entry[4]; /* entry pt. */
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char text_start[4]; /* base of text used for this file */
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char data_start[4]; /* base of data used for this file */
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} ATTRIBUTE_PACKED
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AOUTHDR;
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#define AOUTHDRSZ 28
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#define AOUTSZ 28
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typedef struct external_aouthdr64
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{
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char magic[2]; /* Type of file. */
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char vstamp[2]; /* Version stamp. */
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char tsize[4]; /* Text size in bytes, padded to FW bdry*/
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char dsize[4]; /* Initialized data " ". */
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char bsize[4]; /* Uninitialized data " ". */
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char entry[4]; /* Entry pt. */
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char text_start[4]; /* Base of text used for this file. */
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}
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AOUTHDR64;
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#define AOUTHDRSZ64 24
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#endif /* not DO_NOT_DEFINE_AOUTHDR */
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#ifndef DO_NOT_DEFINE_SCNHDR
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/********************** SECTION HEADER **********************/
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struct external_scnhdr
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{
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char s_name[8]; /* section name */
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char s_paddr[4]; /* physical address, aliased s_nlib */
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char s_vaddr[4]; /* virtual address */
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char s_size[4]; /* section size */
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char s_scnptr[4]; /* file ptr to raw data for section */
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char s_relptr[4]; /* file ptr to relocation */
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char s_lnnoptr[4]; /* file ptr to line numbers */
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char s_nreloc[2]; /* number of relocation entries */
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char s_nlnno[2]; /* number of line number entries */
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char s_flags[4]; /* flags */
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};
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#define SCNHDR struct external_scnhdr
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#define SCNHSZ 40
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/* Names of "special" sections. */
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#define _TEXT ".text"
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#define _DATA ".data"
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#define _BSS ".bss"
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#define _COMMENT ".comment"
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#define _LIB ".lib"
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#endif /* not DO_NOT_DEFINE_SCNHDR */
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#ifndef DO_NOT_DEFINE_LINENO
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/********************** LINE NUMBERS **********************/
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#ifndef L_LNNO_SIZE
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#error L_LNNO_SIZE needs to be defined
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#endif
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/* 1 line number entry for every "breakpointable" source line in a section.
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Line numbers are grouped on a per function basis; first entry in a function
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grouping will have l_lnno = 0 and in place of physical address will be the
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symbol table index of the function name. */
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struct external_lineno
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{
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union
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{
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char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
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char l_paddr[4]; /* (physical) address of line number */
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} l_addr;
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char l_lnno[L_LNNO_SIZE]; /* line number */
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};
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#define LINENO struct external_lineno
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#define LINESZ (4 + L_LNNO_SIZE)
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#if L_LNNO_SIZE == 4
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#define GET_LINENO_LNNO(abfd, ext) H_GET_32 (abfd, (ext->l_lnno))
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#define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_32 (abfd, val, (ext->l_lnno))
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#endif
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#if L_LNNO_SIZE == 2
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#define GET_LINENO_LNNO(abfd, ext) H_GET_16 (abfd, (ext->l_lnno))
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#define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_16 (abfd, val, (ext->l_lnno))
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#endif
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#endif /* not DO_NOT_DEFINE_LINENO */
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#ifndef DO_NOT_DEFINE_SYMENT
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/********************** SYMBOLS **********************/
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#define E_SYMNMLEN 8 /* # characters in a symbol name */
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#ifndef E_FILNMLEN
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#define E_FILNMLEN 14
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#endif
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#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
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struct external_syment
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{
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union
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{
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char e_name[E_SYMNMLEN];
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struct
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{
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char e_zeroes[4];
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char e_offset[4];
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} e;
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} e;
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char e_value[4];
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char e_scnum[2];
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char e_type[2];
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char e_sclass[1];
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char e_numaux[1];
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} ATTRIBUTE_PACKED ;
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#define SYMENT struct external_syment
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#define SYMESZ 18
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#ifndef N_BTMASK
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#define N_BTMASK 0xf
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#endif
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#ifndef N_TMASK
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#define N_TMASK 0x30
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#endif
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#ifndef N_BTSHFT
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#define N_BTSHFT 4
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#endif
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#ifndef N_TSHIFT
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#define N_TSHIFT 2
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#endif
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#endif /* not DO_NOT_DEFINE_SYMENT */
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#ifndef DO_NOT_DEFINE_AUXENT
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union external_auxent
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{
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struct
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{
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char x_tagndx[4]; /* str, un, or enum tag indx */
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union
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{
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struct
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{
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char x_lnno[2]; /* declaration line number */
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char x_size[2]; /* str/union/array size */
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} x_lnsz;
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char x_fsize[4]; /* size of function */
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} x_misc;
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union
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{
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struct /* if ISFCN, tag, or .bb */
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{
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char x_lnnoptr[4]; /* ptr to fcn line # */
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char x_endndx[4]; /* entry ndx past block end */
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} x_fcn;
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struct /* if ISARY, up to 4 dimen. */
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{
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char x_dimen[E_DIMNUM][2];
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} x_ary;
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} x_fcnary;
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char x_tvndx[2]; /* tv index */
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} x_sym;
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union
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{
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char x_fname[E_FILNMLEN];
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struct
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{
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char x_zeroes[4];
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char x_offset[4];
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} x_n;
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} x_file;
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struct
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{
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char x_scnlen[4]; /* section length */
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char x_nreloc[2]; /* # relocation entries */
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char x_nlinno[2]; /* # line numbers */
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#ifdef INCLUDE_COMDAT_FIELDS_IN_AUXENT
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char x_checksum[4]; /* section COMDAT checksum */
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char x_associated[2]; /* COMDAT associated section index */
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char x_comdat[1]; /* COMDAT selection number */
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#endif
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} x_scn;
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struct
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{
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char x_tvfill[4]; /* tv fill value */
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char x_tvlen[2]; /* length of .tv */
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char x_tvran[2][2]; /* tv range */
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} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
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} ATTRIBUTE_PACKED ;
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#define AUXENT union external_auxent
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#define AUXESZ 18
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#define _ETEXT "etext"
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#endif /* not DO_NOT_DEFINE_AUXENT */
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#endif /* COFF_EXTERNAL_H */
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