1/* external.h -- External COFF structures 2 3 Copyright 2001 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 18 19#ifndef COFF_EXTERNAL_H 20#define COFF_EXTERNAL_H 21 22#ifndef DO_NOT_DEFINE_FILHDR 23/********************** FILE HEADER **********************/ 24 25struct external_filehdr 26 { 27 char f_magic[2]; /* magic number */ 28 char f_nscns[2]; /* number of sections */ 29 char f_timdat[4]; /* time & date stamp */ 30 char f_symptr[4]; /* file pointer to symtab */ 31 char f_nsyms[4]; /* number of symtab entries */ 32 char f_opthdr[2]; /* sizeof(optional hdr) */ 33 char f_flags[2]; /* flags */ 34 }; 35 36#define FILHDR struct external_filehdr 37#define FILHSZ 20 38#endif 39 40#ifndef DO_NOT_DEFINE_AOUTHDR 41/********************** AOUT "OPTIONAL HEADER" **********************/ 42 43typedef struct external_aouthdr 44 { 45 char magic[2]; /* type of file */ 46 char vstamp[2]; /* version stamp */ 47 char tsize[4]; /* text size in bytes, padded to FW bdry*/ 48 char dsize[4]; /* initialized data " " */ 49 char bsize[4]; /* uninitialized data " " */ 50 char entry[4]; /* entry pt. */ 51 char text_start[4]; /* base of text used for this file */ 52 char data_start[4]; /* base of data used for this file */ 53 } 54AOUTHDR; 55 56#define AOUTHDRSZ 28 57#define AOUTSZ 28 58#endif 59 60typedef struct external_aouthdr64 61{ 62 char magic[2]; /* Type of file. */ 63 char vstamp[2]; /* Version stamp. */ 64 char tsize[4]; /* Text size in bytes, padded to FW bdry*/ 65 char dsize[4]; /* Initialized data " ". */ 66 char bsize[4]; /* Uninitialized data " ". */ 67 char entry[4]; /* Entry pt. */ 68 char text_start[4]; /* Base of text used for this file. */ 69} 70AOUTHDR64; 71#define AOUTHDRSZ64 24 72 73#ifndef DO_NOT_DEFINE_SCNHDR 74/********************** SECTION HEADER **********************/ 75 76struct external_scnhdr 77 { 78 char s_name[8]; /* section name */ 79 char s_paddr[4]; /* physical address, aliased s_nlib */ 80 char s_vaddr[4]; /* virtual address */ 81 char s_size[4]; /* section size */ 82 char s_scnptr[4]; /* file ptr to raw data for section */ 83 char s_relptr[4]; /* file ptr to relocation */ 84 char s_lnnoptr[4]; /* file ptr to line numbers */ 85 char s_nreloc[2]; /* number of relocation entries */ 86 char s_nlnno[2]; /* number of line number entries */ 87 char s_flags[4]; /* flags */ 88 }; 89 90#define SCNHDR struct external_scnhdr 91#define SCNHSZ 40 92 93/* Names of "special" sections. */ 94 95#define _TEXT ".text" 96#define _DATA ".data" 97#define _BSS ".bss" 98#define _COMMENT ".comment" 99#define _LIB ".lib" 100#endif /* not DO_NOT_DEFINE_SCNHDR */ 101 102#ifndef DO_NOT_DEFINE_LINENO 103 104/********************** LINE NUMBERS **********************/ 105 106#ifndef L_LNNO_SIZE 107#error L_LNNO_SIZE needs to be defined 108#endif 109 110/* 1 line number entry for every "breakpointable" source line in a section. 111 Line numbers are grouped on a per function basis; first entry in a function 112 grouping will have l_lnno = 0 and in place of physical address will be the 113 symbol table index of the function name. */ 114struct external_lineno 115{ 116 union 117 { 118 char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ 119 char l_paddr[4]; /* (physical) address of line number */ 120 } l_addr; 121 122 char l_lnno[L_LNNO_SIZE]; /* line number */ 123}; 124 125#define LINENO struct external_lineno 126#define LINESZ (4 + L_LNNO_SIZE) 127 128#if L_LNNO_SIZE == 4 129#define GET_LINENO_LNNO(abfd, ext) H_GET_32 (abfd, (ext->l_lnno)) 130#define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_32 (abfd, val, (ext->l_lnno)) 131#endif 132#if L_LNNO_SIZE == 2 133#define GET_LINENO_LNNO(abfd, ext) H_GET_16 (abfd, (ext->l_lnno)) 134#define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_16 (abfd, val, (ext->l_lnno)) 135#endif 136 137#endif /* not DO_NOT_DEFINE_LINENO */ 138 139#ifndef DO_NOT_DEFINE_SYMENT 140/********************** SYMBOLS **********************/ 141 142#define E_SYMNMLEN 8 /* # characters in a symbol name */ 143#ifndef E_FILNMLEN 144#define E_FILNMLEN 14 145#endif 146#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ 147 148struct external_syment 149{ 150 union 151 { 152 char e_name[E_SYMNMLEN]; 153 154 struct 155 { 156 char e_zeroes[4]; 157 char e_offset[4]; 158 } e; 159 } e; 160 161 char e_value[4]; 162 char e_scnum[2]; 163 char e_type[2]; 164 char e_sclass[1]; 165 char e_numaux[1]; 166}; 167 168#define SYMENT struct external_syment 169#define SYMESZ 18 170 171#ifndef N_BTMASK 172#define N_BTMASK 0xf 173#endif 174 175#ifndef N_TMASK 176#define N_TMASK 0x30 177#endif 178 179#ifndef N_BTSHFT 180#define N_BTSHFT 4 181#endif 182 183#ifndef N_TSHIFT 184#define N_TSHIFT 2 185#endif 186 187#endif /* not DO_NOT_DEFINE_SYMENT */ 188 189#ifndef DO_NOT_DEFINE_AUXENT 190 191union external_auxent 192{ 193 struct 194 { 195 char x_tagndx[4]; /* str, un, or enum tag indx */ 196 197 union 198 { 199 struct 200 { 201 char x_lnno[2]; /* declaration line number */ 202 char x_size[2]; /* str/union/array size */ 203 } x_lnsz; 204 205 char x_fsize[4]; /* size of function */ 206 207 } x_misc; 208 209 union 210 { 211 struct /* if ISFCN, tag, or .bb */ 212 { 213 char x_lnnoptr[4]; /* ptr to fcn line # */ 214 char x_endndx[4]; /* entry ndx past block end */ 215 } x_fcn; 216 217 struct /* if ISARY, up to 4 dimen. */ 218 { 219 char x_dimen[E_DIMNUM][2]; 220 } x_ary; 221 222 } x_fcnary; 223 224 char x_tvndx[2]; /* tv index */ 225 226 } x_sym; 227 228 union 229 { 230 char x_fname[E_FILNMLEN]; 231 232 struct 233 { 234 char x_zeroes[4]; 235 char x_offset[4]; 236 } x_n; 237 238 } x_file; 239 240 struct 241 { 242 char x_scnlen[4]; /* section length */ 243 char x_nreloc[2]; /* # relocation entries */ 244 char x_nlinno[2]; /* # line numbers */ 245#ifdef INCLUDE_COMDAT_FIELDS_IN_AUXENT 246 char x_checksum[4]; /* section COMDAT checksum */ 247 char x_associated[2]; /* COMDAT associated section index */ 248 char x_comdat[1]; /* COMDAT selection number */ 249#endif 250 } x_scn; 251 252 struct 253 { 254 char x_tvfill[4]; /* tv fill value */ 255 char x_tvlen[2]; /* length of .tv */ 256 char x_tvran[2][2]; /* tv range */ 257 } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ 258}; 259 260#define AUXENT union external_auxent 261#define AUXESZ 18 262 263#define _ETEXT "etext" 264 265#endif /* not DO_NOT_DEFINE_AUXENT */ 266 267#endif /* COFF_EXTERNAL_H */ 268