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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 18 19 #ifndef COFF_EXTERNAL_H 20 #define COFF_EXTERNAL_H 21 22 #ifndef DO_NOT_DEFINE_FILHDR 23 /********************** FILE HEADER **********************/ 24 25 struct 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 43 typedef 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 } 54 AOUTHDR; 55 56 #define AOUTHDRSZ 28 57 #define AOUTSZ 28 58 #endif 59 60 typedef 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 } 70 AOUTHDR64; 71 #define AOUTHDRSZ64 24 72 73 #ifndef DO_NOT_DEFINE_SCNHDR 74 /********************** SECTION HEADER **********************/ 75 76 struct 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. */ 114 struct 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 */ 147 148 struct 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 190 191 union 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