1 /* coff object file format 2 Copyright (C) 1989-2020 Free Software Foundation, Inc. 3 4 This file is part of GAS. 5 6 GAS is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 GAS is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GAS; see the file COPYING. If not, write to the Free 18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 19 02110-1301, USA. */ 20 21 #ifndef OBJ_FORMAT_H 22 #define OBJ_FORMAT_H 23 24 #define OBJ_COFF 1 25 26 #include "targ-cpu.h" 27 28 /* This internal_lineno crap is to stop namespace pollution from the 29 bfd internal coff headerfile. */ 30 #define internal_lineno bfd_internal_lineno 31 #include "coff/internal.h" 32 #undef internal_lineno 33 34 /* CPU-specific setup: */ 35 36 #ifdef TC_ARM 37 #include "coff/arm.h" 38 #ifndef TARGET_FORMAT 39 #define TARGET_FORMAT "coff-arm" 40 #endif 41 #endif 42 43 #ifdef TC_PPC 44 #include "coff/rs6000.h" 45 #endif 46 47 #ifdef TC_I386 48 #ifdef TE_PEP 49 #include "coff/x86_64.h" 50 #else 51 #include "coff/i386.h" 52 #endif 53 54 #ifndef TARGET_FORMAT 55 #ifdef TE_PEP 56 #define TARGET_FORMAT "coff-x86-64" 57 #else 58 #define TARGET_FORMAT "coff-i386" 59 #endif 60 #endif 61 #endif 62 63 #ifdef TC_Z80 64 #include "coff/z80.h" 65 #define TARGET_FORMAT "coff-z80" 66 #endif 67 68 #ifdef TC_Z8K 69 #include "coff/z8k.h" 70 #define TARGET_FORMAT "coff-z8k" 71 #endif 72 73 #ifdef TC_SH 74 75 #ifdef TE_PE 76 #define COFF_WITH_PE 77 #endif 78 79 #include "coff/sh.h" 80 81 #ifdef TE_PE 82 #define TARGET_FORMAT "pe-shl" 83 #else 84 85 #define TARGET_FORMAT \ 86 (!target_big_endian \ 87 ? (sh_small ? "coff-shl-small" : "coff-shl") \ 88 : (sh_small ? "coff-sh-small" : "coff-sh")) 89 90 #endif 91 #endif 92 93 #ifdef TC_TIC30 94 #include "coff/tic30.h" 95 #define TARGET_FORMAT "coff-tic30" 96 #endif 97 98 #ifdef TC_TIC4X 99 #include "coff/tic4x.h" 100 #define TARGET_FORMAT "coff2-tic4x" 101 #endif 102 103 #ifdef TC_TIC54X 104 #include "coff/tic54x.h" 105 #define TARGET_FORMAT "coff1-c54x" 106 #endif 107 108 #ifdef TC_MCORE 109 #include "coff/mcore.h" 110 #ifndef TARGET_FORMAT 111 #define TARGET_FORMAT "pe-mcore" 112 #endif 113 #endif 114 115 #ifdef TE_PE 116 #define obj_set_weak_hook pecoff_obj_set_weak_hook 117 #define obj_clear_weak_hook pecoff_obj_clear_weak_hook 118 #endif 119 120 #ifndef OBJ_COFF_MAX_AUXENTRIES 121 #define OBJ_COFF_MAX_AUXENTRIES 1 122 #endif 123 124 #define obj_symbol_new_hook coff_obj_symbol_new_hook 125 #define obj_symbol_clone_hook coff_obj_symbol_clone_hook 126 #define obj_read_begin_hook coff_obj_read_begin_hook 127 128 #include "bfd/libcoff.h" 129 130 #define OUTPUT_FLAVOR bfd_target_coff_flavour 131 132 /* Alter the field names, for now, until we've fixed up the other 133 references to use the new name. */ 134 #define OBJ_SYMFIELD_TYPE unsigned long 135 #define sy_obj sy_obj_flags 136 137 /* We can't use the predefined section symbols in bfd/section.c, as 138 COFF symbols have extra fields. See bfd/libcoff.h:coff_symbol_type. */ 139 #ifndef obj_sec_sym_ok_for_reloc 140 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0) 141 #endif 142 143 #define SYM_AUXENT(S) \ 144 (&coffsymbol (symbol_get_bfdsym (S))->native[1].u.auxent) 145 #define SYM_AUXINFO(S) \ 146 (&coffsymbol (symbol_get_bfdsym (S))->native[1]) 147 148 /* The number of auxiliary entries. */ 149 #define S_GET_NUMBER_AUXILIARY(s) \ 150 (coffsymbol (symbol_get_bfdsym (s))->native->u.syment.n_numaux) 151 /* The number of auxiliary entries. */ 152 #define S_SET_NUMBER_AUXILIARY(s, v) (S_GET_NUMBER_AUXILIARY (s) = (v)) 153 154 /* True if a symbol name is in the string table, i.e. its length is > 8. */ 155 #define S_IS_STRING(s) (strlen (S_GET_NAME (s)) > 8 ? 1 : 0) 156 157 /* Auxiliary entry macros. SA_ stands for symbol auxiliary. */ 158 /* Omit the tv related fields. */ 159 /* Accessors. */ 160 161 #define SA_GET_SYM_TAGNDX(s) (SYM_AUXENT (s)->x_sym.x_tagndx.l) 162 #define SA_GET_SYM_LNNO(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno) 163 #define SA_GET_SYM_SIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size) 164 #define SA_GET_SYM_FSIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize) 165 #define SA_GET_SYM_LNNOPTR(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr) 166 #define SA_GET_SYM_ENDNDX(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx) 167 #define SA_GET_SYM_DIMEN(s,i) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)]) 168 #define SA_GET_FILE_FNAME(s) (SYM_AUXENT (s)->x_file.x_fname) 169 #define SA_GET_SCN_SCNLEN(s) (SYM_AUXENT (s)->x_scn.x_scnlen) 170 #define SA_GET_SCN_NRELOC(s) (SYM_AUXENT (s)->x_scn.x_nreloc) 171 #define SA_GET_SCN_NLINNO(s) (SYM_AUXENT (s)->x_scn.x_nlinno) 172 173 #define SA_SET_SYM_LNNO(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno = (v)) 174 #define SA_SET_SYM_SIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size = (v)) 175 #define SA_SET_SYM_FSIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize = (v)) 176 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr = (v)) 177 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)] = (v)) 178 #define SA_SET_FILE_FNAME(s,v) strncpy (SYM_AUXENT (s)->x_file.x_fname, (v), FILNMLEN) 179 #define SA_SET_SCN_SCNLEN(s,v) (SYM_AUXENT (s)->x_scn.x_scnlen = (v)) 180 #define SA_SET_SCN_NRELOC(s,v) (SYM_AUXENT (s)->x_scn.x_nreloc = (v)) 181 #define SA_SET_SCN_NLINNO(s,v) (SYM_AUXENT (s)->x_scn.x_nlinno = (v)) 182 183 /* Internal use only definitions. SF_ stands for symbol flags. 184 185 These values can be assigned to sy_symbol.ost_flags field of a symbolS. */ 186 187 #define SF_NORMAL_MASK 0x0000ffff /* bits 12-15 are general purpose. */ 188 189 #define SF_STATICS 0x00001000 /* Mark the .text & all symbols. */ 190 #define SF_DEFINED 0x00002000 /* Symbol is defined in this file. */ 191 #define SF_STRING 0x00004000 /* Symbol name length > 8. */ 192 #define SF_LOCAL 0x00008000 /* Symbol must not be emitted. */ 193 194 #define SF_DEBUG_MASK 0xffff0000 /* bits 16-31 are debug info. */ 195 196 #define SF_FUNCTION 0x00010000 /* The symbol is a function. */ 197 #define SF_PROCESS 0x00020000 /* Process symbol before write. */ 198 #define SF_TAGGED 0x00040000 /* Is associated with a tag. */ 199 #define SF_TAG 0x00080000 /* Is a tag. */ 200 #define SF_DEBUG 0x00100000 /* Is in debug or abs section. */ 201 #define SF_GET_SEGMENT 0x00200000 /* Get the section of the forward symbol. */ 202 /* All other bits are unused. */ 203 204 /* Accessors. */ 205 #define SF_GET(s) (* symbol_get_obj (s)) 206 #define SF_GET_DEBUG(s) (symbol_get_bfdsym (s)->flags & BSF_DEBUGGING) 207 #define SF_SET_DEBUG(s) (symbol_get_bfdsym (s)->flags |= BSF_DEBUGGING) 208 #define SF_GET_NORMAL_FIELD(s) (SF_GET (s) & SF_NORMAL_MASK) 209 #define SF_GET_DEBUG_FIELD(s) (SF_GET (s) & SF_DEBUG_MASK) 210 #define SF_GET_FILE(s) (SF_GET (s) & SF_FILE) 211 #define SF_GET_STATICS(s) (SF_GET (s) & SF_STATICS) 212 #define SF_GET_DEFINED(s) (SF_GET (s) & SF_DEFINED) 213 #define SF_GET_STRING(s) (SF_GET (s) & SF_STRING) 214 #define SF_GET_LOCAL(s) (SF_GET (s) & SF_LOCAL) 215 #define SF_GET_FUNCTION(s) (SF_GET (s) & SF_FUNCTION) 216 #define SF_GET_PROCESS(s) (SF_GET (s) & SF_PROCESS) 217 #define SF_GET_TAGGED(s) (SF_GET (s) & SF_TAGGED) 218 #define SF_GET_TAG(s) (SF_GET (s) & SF_TAG) 219 #define SF_GET_GET_SEGMENT(s) (SF_GET (s) & SF_GET_SEGMENT) 220 221 /* Modifiers. */ 222 #define SF_SET(s,v) (SF_GET (s) = (v)) 223 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK)) 224 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK)) 225 #define SF_SET_FILE(s) (SF_GET (s) |= SF_FILE) 226 #define SF_SET_STATICS(s) (SF_GET (s) |= SF_STATICS) 227 #define SF_SET_DEFINED(s) (SF_GET (s) |= SF_DEFINED) 228 #define SF_SET_STRING(s) (SF_GET (s) |= SF_STRING) 229 #define SF_SET_LOCAL(s) (SF_GET (s) |= SF_LOCAL) 230 #define SF_CLEAR_LOCAL(s) (SF_GET (s) &= ~SF_LOCAL) 231 #define SF_SET_FUNCTION(s) (SF_GET (s) |= SF_FUNCTION) 232 #define SF_SET_PROCESS(s) (SF_GET (s) |= SF_PROCESS) 233 #define SF_SET_TAGGED(s) (SF_GET (s) |= SF_TAGGED) 234 #define SF_SET_TAG(s) (SF_GET (s) |= SF_TAG) 235 #define SF_SET_GET_SEGMENT(s) (SF_GET (s) |= SF_GET_SEGMENT) 236 237 238 /* Line number handling. */ 239 extern int text_lineno_number; 240 extern int coff_line_base; 241 extern int coff_n_line_nos; 242 extern symbolS *coff_last_function; 243 244 #define obj_emit_lineno(WHERE, LINE, FILE_START) abort () 245 #define obj_app_file(name, app) c_dot_file_symbol (name, app) 246 #define obj_frob_symbol(S,P) coff_frob_symbol (S, & P) 247 #define obj_frob_section(S) coff_frob_section (S) 248 #define obj_frob_file_after_relocs() coff_frob_file_after_relocs () 249 #ifndef obj_adjust_symtab 250 #define obj_adjust_symtab() coff_adjust_symtab () 251 #endif 252 253 /* Forward the segment of a forwarded symbol, handle assignments that 254 just copy symbol values, etc. */ 255 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES 256 #ifndef TE_I386AIX 257 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \ 258 (SF_GET_GET_SEGMENT (dest) \ 259 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \ 260 : 0) 261 #else 262 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \ 263 (SF_GET_GET_SEGMENT (dest) && S_GET_SEGMENT (dest) == SEG_UNKNOWN \ 264 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \ 265 : 0) 266 #endif 267 #endif 268 269 /* Sanity check. */ 270 271 extern const pseudo_typeS coff_pseudo_table[]; 272 273 #ifndef obj_pop_insert 274 #define obj_pop_insert() pop_insert (coff_pseudo_table) 275 #endif 276 277 /* In COFF, if a symbol is defined using .def/.val SYM/.endef, it's OK 278 to redefine the symbol later on. This can happen if C symbols use 279 a prefix, and a symbol is defined both with and without the prefix, 280 as in start/_start/__start in gcc/libgcc1-test.c. */ 281 #define RESOLVE_SYMBOL_REDEFINITION(sym) \ 282 (SF_GET_GET_SEGMENT (sym) \ 283 ? (sym->frag = frag_now, \ 284 S_SET_VALUE (sym, frag_now_fix ()), \ 285 S_SET_SEGMENT (sym, now_seg), \ 286 0) \ 287 : 0) 288 289 /* Stabs in a coff file go into their own section. */ 290 #define SEPARATE_STAB_SECTIONS 1 291 292 /* We need 12 bytes at the start of the section to hold some initial 293 information. */ 294 #define INIT_STAB_SECTION(seg) obj_coff_init_stab_section (seg) 295 296 /* Store the number of relocations in the section aux entry. */ 297 #define SET_SECTION_RELOCS(sec, relocs, n) \ 298 SA_SET_SCN_NRELOC (section_symbol (sec), n) 299 300 #define obj_app_file(name, app) c_dot_file_symbol (name, app) 301 302 extern int S_SET_DATA_TYPE (symbolS *, int); 303 extern int S_SET_STORAGE_CLASS (symbolS *, int); 304 extern int S_GET_STORAGE_CLASS (symbolS *); 305 extern void SA_SET_SYM_ENDNDX (symbolS *, symbolS *); 306 extern void coff_add_linesym (symbolS *); 307 extern void c_dot_file_symbol (const char *, int); 308 extern void coff_frob_symbol (symbolS *, int *); 309 extern void coff_adjust_symtab (void); 310 extern void coff_frob_section (segT); 311 extern void coff_adjust_section_syms (bfd *, asection *, void *); 312 extern void coff_frob_file_after_relocs (void); 313 extern void coff_obj_symbol_new_hook (symbolS *); 314 extern void coff_obj_symbol_clone_hook (symbolS *, symbolS *); 315 extern void coff_obj_read_begin_hook (void); 316 #ifdef TE_PE 317 extern void pecoff_obj_set_weak_hook (symbolS *); 318 extern void pecoff_obj_clear_weak_hook (symbolS *); 319 #endif 320 extern void obj_coff_section (int); 321 extern segT obj_coff_add_segment (const char *); 322 extern void obj_coff_section (int); 323 extern void c_dot_file_symbol (const char *, int); 324 extern segT s_get_segment (symbolS *); 325 #ifndef tc_coff_symbol_emit_hook 326 extern void tc_coff_symbol_emit_hook (symbolS *); 327 #endif 328 extern void obj_coff_pe_handle_link_once (void); 329 extern void obj_coff_init_stab_section (segT); 330 extern void c_section_header (struct internal_scnhdr *, 331 char *, long, long, long, long, 332 long, long, long, long); 333 extern void obj_coff_seh_do_final (void); 334 335 #ifndef obj_coff_generate_pdata 336 #define obj_coff_generate_pdata obj_coff_seh_do_final 337 #endif 338 339 340 #endif /* OBJ_FORMAT_H */ 341