1 /* external.h -- External COFF structures 2 3 Copyright 2001, 2006 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 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 } ATTRIBUTE_PACKED 54 AOUTHDR; 55 56 #define AOUTHDRSZ 28 57 #define AOUTSZ 28 58 59 typedef struct external_aouthdr64 60 { 61 char magic[2]; /* Type of file. */ 62 char vstamp[2]; /* Version stamp. */ 63 char tsize[4]; /* Text size in bytes, padded to FW bdry*/ 64 char dsize[4]; /* Initialized data " ". */ 65 char bsize[4]; /* Uninitialized data " ". */ 66 char entry[4]; /* Entry pt. */ 67 char text_start[4]; /* Base of text used for this file. */ 68 } 69 AOUTHDR64; 70 #define AOUTHDRSZ64 24 71 72 #endif /* not DO_NOT_DEFINE_AOUTHDR */ 73 74 #ifndef DO_NOT_DEFINE_SCNHDR 75 /********************** SECTION HEADER **********************/ 76 77 struct external_scnhdr 78 { 79 char s_name[8]; /* section name */ 80 char s_paddr[4]; /* physical address, aliased s_nlib */ 81 char s_vaddr[4]; /* virtual address */ 82 char s_size[4]; /* section size */ 83 char s_scnptr[4]; /* file ptr to raw data for section */ 84 char s_relptr[4]; /* file ptr to relocation */ 85 char s_lnnoptr[4]; /* file ptr to line numbers */ 86 char s_nreloc[2]; /* number of relocation entries */ 87 char s_nlnno[2]; /* number of line number entries */ 88 char s_flags[4]; /* flags */ 89 }; 90 91 #define SCNHDR struct external_scnhdr 92 #define SCNHSZ 40 93 94 /* Names of "special" sections. */ 95 96 #define _TEXT ".text" 97 #define _DATA ".data" 98 #define _BSS ".bss" 99 #define _COMMENT ".comment" 100 #define _LIB ".lib" 101 #endif /* not DO_NOT_DEFINE_SCNHDR */ 102 103 #ifndef DO_NOT_DEFINE_LINENO 104 105 /********************** LINE NUMBERS **********************/ 106 107 #ifndef L_LNNO_SIZE 108 #error L_LNNO_SIZE needs to be defined 109 #endif 110 111 /* 1 line number entry for every "breakpointable" source line in a section. 112 Line numbers are grouped on a per function basis; first entry in a function 113 grouping will have l_lnno = 0 and in place of physical address will be the 114 symbol table index of the function name. */ 115 struct external_lineno 116 { 117 union 118 { 119 char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ 120 char l_paddr[4]; /* (physical) address of line number */ 121 } l_addr; 122 123 char l_lnno[L_LNNO_SIZE]; /* line number */ 124 }; 125 126 #define LINENO struct external_lineno 127 #define LINESZ (4 + L_LNNO_SIZE) 128 129 #if L_LNNO_SIZE == 4 130 #define GET_LINENO_LNNO(abfd, ext) H_GET_32 (abfd, (ext->l_lnno)) 131 #define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_32 (abfd, val, (ext->l_lnno)) 132 #endif 133 #if L_LNNO_SIZE == 2 134 #define GET_LINENO_LNNO(abfd, ext) H_GET_16 (abfd, (ext->l_lnno)) 135 #define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_16 (abfd, val, (ext->l_lnno)) 136 #endif 137 138 #endif /* not DO_NOT_DEFINE_LINENO */ 139 140 #ifndef DO_NOT_DEFINE_SYMENT 141 /********************** SYMBOLS **********************/ 142 143 #define E_SYMNMLEN 8 /* # characters in a symbol name */ 144 #ifndef E_FILNMLEN 145 #define E_FILNMLEN 14 146 #endif 147 #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ 148 149 struct external_syment 150 { 151 union 152 { 153 char e_name[E_SYMNMLEN]; 154 155 struct 156 { 157 char e_zeroes[4]; 158 char e_offset[4]; 159 } e; 160 } e; 161 162 char e_value[4]; 163 char e_scnum[2]; 164 char e_type[2]; 165 char e_sclass[1]; 166 char e_numaux[1]; 167 } ATTRIBUTE_PACKED ; 168 169 #define SYMENT struct external_syment 170 #define SYMESZ 18 171 172 #ifndef N_BTMASK 173 #define N_BTMASK 0xf 174 #endif 175 176 #ifndef N_TMASK 177 #define N_TMASK 0x30 178 #endif 179 180 #ifndef N_BTSHFT 181 #define N_BTSHFT 4 182 #endif 183 184 #ifndef N_TSHIFT 185 #define N_TSHIFT 2 186 #endif 187 188 #endif /* not DO_NOT_DEFINE_SYMENT */ 189 190 #ifndef DO_NOT_DEFINE_AUXENT 191 192 union external_auxent 193 { 194 struct 195 { 196 char x_tagndx[4]; /* str, un, or enum tag indx */ 197 198 union 199 { 200 struct 201 { 202 char x_lnno[2]; /* declaration line number */ 203 char x_size[2]; /* str/union/array size */ 204 } x_lnsz; 205 206 char x_fsize[4]; /* size of function */ 207 208 } x_misc; 209 210 union 211 { 212 struct /* if ISFCN, tag, or .bb */ 213 { 214 char x_lnnoptr[4]; /* ptr to fcn line # */ 215 char x_endndx[4]; /* entry ndx past block end */ 216 } x_fcn; 217 218 struct /* if ISARY, up to 4 dimen. */ 219 { 220 char x_dimen[E_DIMNUM][2]; 221 } x_ary; 222 223 } x_fcnary; 224 225 char x_tvndx[2]; /* tv index */ 226 227 } x_sym; 228 229 union 230 { 231 char x_fname[E_FILNMLEN]; 232 233 struct 234 { 235 char x_zeroes[4]; 236 char x_offset[4]; 237 } x_n; 238 239 } x_file; 240 241 struct 242 { 243 char x_scnlen[4]; /* section length */ 244 char x_nreloc[2]; /* # relocation entries */ 245 char x_nlinno[2]; /* # line numbers */ 246 #ifdef INCLUDE_COMDAT_FIELDS_IN_AUXENT 247 char x_checksum[4]; /* section COMDAT checksum */ 248 char x_associated[2]; /* COMDAT associated section index */ 249 char x_comdat[1]; /* COMDAT selection number */ 250 #endif 251 } x_scn; 252 253 struct 254 { 255 char x_tvfill[4]; /* tv fill value */ 256 char x_tvlen[2]; /* length of .tv */ 257 char x_tvran[2][2]; /* tv range */ 258 } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ 259 } ATTRIBUTE_PACKED ; 260 261 #define AUXENT union external_auxent 262 #define AUXESZ 18 263 264 #define _ETEXT "etext" 265 266 #endif /* not DO_NOT_DEFINE_AUXENT */ 267 268 #endif /* COFF_EXTERNAL_H */ 269