1 /* coff object file format 2 Copyright (C) 1989-2016 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 #ifdef TE_PE 45 #include "coff/powerpc.h" 46 #else 47 #include "coff/rs6000.h" 48 #endif 49 #endif 50 51 #ifdef TC_SPARC 52 #include "coff/sparc.h" 53 #endif 54 55 #ifdef TC_I386 56 #ifdef TE_PEP 57 #include "coff/x86_64.h" 58 #else 59 #include "coff/i386.h" 60 #endif 61 62 #ifndef TARGET_FORMAT 63 #ifdef TE_PEP 64 #define TARGET_FORMAT "coff-x86-64" 65 #else 66 #define TARGET_FORMAT "coff-i386" 67 #endif 68 #endif 69 #endif 70 71 #ifdef TC_M68K 72 #include "coff/m68k.h" 73 #ifndef TARGET_FORMAT 74 #define TARGET_FORMAT "coff-m68k" 75 #endif 76 #endif 77 78 #ifdef TC_I960 79 #include "coff/i960.h" 80 #define TARGET_FORMAT "coff-Intel-little" 81 #endif 82 83 #ifdef TC_Z80 84 #include "coff/z80.h" 85 #define TARGET_FORMAT "coff-z80" 86 #endif 87 88 #ifdef TC_Z8K 89 #include "coff/z8k.h" 90 #define TARGET_FORMAT "coff-z8k" 91 #endif 92 93 #ifdef TC_H8300 94 #include "coff/h8300.h" 95 #define TARGET_FORMAT "coff-h8300" 96 #endif 97 98 #ifdef TC_H8500 99 #include "coff/h8500.h" 100 #define TARGET_FORMAT "coff-h8500" 101 #endif 102 103 #ifdef TC_SH 104 105 #ifdef TE_PE 106 #define COFF_WITH_PE 107 #endif 108 109 #include "coff/sh.h" 110 111 #ifdef TE_PE 112 #define TARGET_FORMAT "pe-shl" 113 #else 114 115 #define TARGET_FORMAT \ 116 (!target_big_endian \ 117 ? (sh_small ? "coff-shl-small" : "coff-shl") \ 118 : (sh_small ? "coff-sh-small" : "coff-sh")) 119 120 #endif 121 #endif 122 123 #ifdef TC_MIPS 124 #define COFF_WITH_PE 125 #include "coff/mipspe.h" 126 #undef TARGET_FORMAT 127 #define TARGET_FORMAT "pe-mips" 128 #endif 129 130 #ifdef TC_TIC30 131 #include "coff/tic30.h" 132 #define TARGET_FORMAT "coff-tic30" 133 #endif 134 135 #ifdef TC_TIC4X 136 #include "coff/tic4x.h" 137 #define TARGET_FORMAT "coff2-tic4x" 138 #endif 139 140 #ifdef TC_TIC54X 141 #include "coff/tic54x.h" 142 #define TARGET_FORMAT "coff1-c54x" 143 #endif 144 145 #ifdef TC_MCORE 146 #include "coff/mcore.h" 147 #ifndef TARGET_FORMAT 148 #define TARGET_FORMAT "pe-mcore" 149 #endif 150 #endif 151 152 #ifdef TE_PE 153 #define obj_set_weak_hook pecoff_obj_set_weak_hook 154 #define obj_clear_weak_hook pecoff_obj_clear_weak_hook 155 #endif 156 157 #ifndef OBJ_COFF_MAX_AUXENTRIES 158 #define OBJ_COFF_MAX_AUXENTRIES 1 159 #endif 160 161 #define obj_symbol_new_hook coff_obj_symbol_new_hook 162 #define obj_symbol_clone_hook coff_obj_symbol_clone_hook 163 #define obj_read_begin_hook coff_obj_read_begin_hook 164 165 #include "bfd/libcoff.h" 166 167 #define OUTPUT_FLAVOR bfd_target_coff_flavour 168 169 /* Alter the field names, for now, until we've fixed up the other 170 references to use the new name. */ 171 #ifdef TC_I960 172 #define TC_SYMFIELD_TYPE symbolS * 173 #define sy_tc bal 174 #endif 175 176 #define OBJ_SYMFIELD_TYPE unsigned long 177 #define sy_obj sy_obj_flags 178 179 /* We can't use the predefined section symbols in bfd/section.c, as 180 COFF symbols have extra fields. See bfd/libcoff.h:coff_symbol_type. */ 181 #ifndef obj_sec_sym_ok_for_reloc 182 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0) 183 #endif 184 185 #define SYM_AUXENT(S) \ 186 (&coffsymbol (symbol_get_bfdsym (S))->native[1].u.auxent) 187 #define SYM_AUXINFO(S) \ 188 (&coffsymbol (symbol_get_bfdsym (S))->native[1]) 189 190 /* The number of auxiliary entries. */ 191 #define S_GET_NUMBER_AUXILIARY(s) \ 192 (coffsymbol (symbol_get_bfdsym (s))->native->u.syment.n_numaux) 193 /* The number of auxiliary entries. */ 194 #define S_SET_NUMBER_AUXILIARY(s, v) (S_GET_NUMBER_AUXILIARY (s) = (v)) 195 196 /* True if a symbol name is in the string table, i.e. its length is > 8. */ 197 #define S_IS_STRING(s) (strlen (S_GET_NAME (s)) > 8 ? 1 : 0) 198 199 /* Auxiliary entry macros. SA_ stands for symbol auxiliary. */ 200 /* Omit the tv related fields. */ 201 /* Accessors. */ 202 203 #define SA_GET_SYM_TAGNDX(s) (SYM_AUXENT (s)->x_sym.x_tagndx.l) 204 #define SA_GET_SYM_LNNO(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno) 205 #define SA_GET_SYM_SIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size) 206 #define SA_GET_SYM_FSIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize) 207 #define SA_GET_SYM_LNNOPTR(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr) 208 #define SA_GET_SYM_ENDNDX(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx) 209 #define SA_GET_SYM_DIMEN(s,i) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)]) 210 #define SA_GET_FILE_FNAME(s) (SYM_AUXENT (s)->x_file.x_fname) 211 #define SA_GET_SCN_SCNLEN(s) (SYM_AUXENT (s)->x_scn.x_scnlen) 212 #define SA_GET_SCN_NRELOC(s) (SYM_AUXENT (s)->x_scn.x_nreloc) 213 #define SA_GET_SCN_NLINNO(s) (SYM_AUXENT (s)->x_scn.x_nlinno) 214 215 #define SA_SET_SYM_LNNO(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno = (v)) 216 #define SA_SET_SYM_SIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size = (v)) 217 #define SA_SET_SYM_FSIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize = (v)) 218 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr = (v)) 219 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)] = (v)) 220 #define SA_SET_FILE_FNAME(s,v) strncpy (SYM_AUXENT (s)->x_file.x_fname, (v), FILNMLEN) 221 #define SA_SET_SCN_SCNLEN(s,v) (SYM_AUXENT (s)->x_scn.x_scnlen = (v)) 222 #define SA_SET_SCN_NRELOC(s,v) (SYM_AUXENT (s)->x_scn.x_nreloc = (v)) 223 #define SA_SET_SCN_NLINNO(s,v) (SYM_AUXENT (s)->x_scn.x_nlinno = (v)) 224 225 /* Internal use only definitions. SF_ stands for symbol flags. 226 227 These values can be assigned to sy_symbol.ost_flags field of a symbolS. 228 229 You'll break i960 if you shift the SYSPROC bits anywhere else. for 230 more on the balname/callname hack, see tc-i960.h. b.out is done 231 differently. */ 232 233 #define SF_I960_MASK 0x000001ff /* Bits 0-8 are used by the i960 port. */ 234 #define SF_SYSPROC 0x0000003f /* bits 0-5 are used to store the sysproc number. */ 235 #define SF_IS_SYSPROC 0x00000040 /* bit 6 marks symbols that are sysprocs. */ 236 #define SF_BALNAME 0x00000080 /* bit 7 marks BALNAME symbols. */ 237 #define SF_CALLNAME 0x00000100 /* bit 8 marks CALLNAME symbols. */ 238 239 #define SF_NORMAL_MASK 0x0000ffff /* bits 12-15 are general purpose. */ 240 241 #define SF_STATICS 0x00001000 /* Mark the .text & all symbols. */ 242 #define SF_DEFINED 0x00002000 /* Symbol is defined in this file. */ 243 #define SF_STRING 0x00004000 /* Symbol name length > 8. */ 244 #define SF_LOCAL 0x00008000 /* Symbol must not be emitted. */ 245 246 #define SF_DEBUG_MASK 0xffff0000 /* bits 16-31 are debug info. */ 247 248 #define SF_FUNCTION 0x00010000 /* The symbol is a function. */ 249 #define SF_PROCESS 0x00020000 /* Process symbol before write. */ 250 #define SF_TAGGED 0x00040000 /* Is associated with a tag. */ 251 #define SF_TAG 0x00080000 /* Is a tag. */ 252 #define SF_DEBUG 0x00100000 /* Is in debug or abs section. */ 253 #define SF_GET_SEGMENT 0x00200000 /* Get the section of the forward symbol. */ 254 /* All other bits are unused. */ 255 256 /* Accessors. */ 257 #define SF_GET(s) (* symbol_get_obj (s)) 258 #define SF_GET_DEBUG(s) (symbol_get_bfdsym (s)->flags & BSF_DEBUGGING) 259 #define SF_SET_DEBUG(s) (symbol_get_bfdsym (s)->flags |= BSF_DEBUGGING) 260 #define SF_GET_NORMAL_FIELD(s) (SF_GET (s) & SF_NORMAL_MASK) 261 #define SF_GET_DEBUG_FIELD(s) (SF_GET (s) & SF_DEBUG_MASK) 262 #define SF_GET_FILE(s) (SF_GET (s) & SF_FILE) 263 #define SF_GET_STATICS(s) (SF_GET (s) & SF_STATICS) 264 #define SF_GET_DEFINED(s) (SF_GET (s) & SF_DEFINED) 265 #define SF_GET_STRING(s) (SF_GET (s) & SF_STRING) 266 #define SF_GET_LOCAL(s) (SF_GET (s) & SF_LOCAL) 267 #define SF_GET_FUNCTION(s) (SF_GET (s) & SF_FUNCTION) 268 #define SF_GET_PROCESS(s) (SF_GET (s) & SF_PROCESS) 269 #define SF_GET_TAGGED(s) (SF_GET (s) & SF_TAGGED) 270 #define SF_GET_TAG(s) (SF_GET (s) & SF_TAG) 271 #define SF_GET_GET_SEGMENT(s) (SF_GET (s) & SF_GET_SEGMENT) 272 #define SF_GET_I960(s) (SF_GET (s) & SF_I960_MASK) /* Used by i960. */ 273 #define SF_GET_BALNAME(s) (SF_GET (s) & SF_BALNAME) /* Used by i960. */ 274 #define SF_GET_CALLNAME(s) (SF_GET (s) & SF_CALLNAME) /* Used by i960. */ 275 #define SF_GET_IS_SYSPROC(s) (SF_GET (s) & SF_IS_SYSPROC) /* Used by i960. */ 276 #define SF_GET_SYSPROC(s) (SF_GET (s) & SF_SYSPROC) /* Used by i960. */ 277 278 /* Modifiers. */ 279 #define SF_SET(s,v) (SF_GET (s) = (v)) 280 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK)) 281 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK)) 282 #define SF_SET_FILE(s) (SF_GET (s) |= SF_FILE) 283 #define SF_SET_STATICS(s) (SF_GET (s) |= SF_STATICS) 284 #define SF_SET_DEFINED(s) (SF_GET (s) |= SF_DEFINED) 285 #define SF_SET_STRING(s) (SF_GET (s) |= SF_STRING) 286 #define SF_SET_LOCAL(s) (SF_GET (s) |= SF_LOCAL) 287 #define SF_CLEAR_LOCAL(s) (SF_GET (s) &= ~SF_LOCAL) 288 #define SF_SET_FUNCTION(s) (SF_GET (s) |= SF_FUNCTION) 289 #define SF_SET_PROCESS(s) (SF_GET (s) |= SF_PROCESS) 290 #define SF_SET_TAGGED(s) (SF_GET (s) |= SF_TAGGED) 291 #define SF_SET_TAG(s) (SF_GET (s) |= SF_TAG) 292 #define SF_SET_GET_SEGMENT(s) (SF_GET (s) |= SF_GET_SEGMENT) 293 #define SF_SET_I960(s,v) (SF_GET (s) |= ((v) & SF_I960_MASK)) /* Used by i960. */ 294 #define SF_SET_BALNAME(s) (SF_GET (s) |= SF_BALNAME) /* Used by i960. */ 295 #define SF_SET_CALLNAME(s) (SF_GET (s) |= SF_CALLNAME) /* Used by i960. */ 296 #define SF_SET_IS_SYSPROC(s) (SF_GET (s) |= SF_IS_SYSPROC) /* Used by i960. */ 297 #define SF_SET_SYSPROC(s,v) (SF_GET (s) |= ((v) & SF_SYSPROC)) /* Used by i960. */ 298 299 300 /* Line number handling. */ 301 extern int text_lineno_number; 302 extern int coff_line_base; 303 extern int coff_n_line_nos; 304 extern symbolS *coff_last_function; 305 306 #define obj_emit_lineno(WHERE, LINE, FILE_START) abort () 307 #define obj_app_file(name, app) c_dot_file_symbol (name, app) 308 #define obj_frob_symbol(S,P) coff_frob_symbol (S, & P) 309 #define obj_frob_section(S) coff_frob_section (S) 310 #define obj_frob_file_after_relocs() coff_frob_file_after_relocs () 311 #ifndef obj_adjust_symtab 312 #define obj_adjust_symtab() coff_adjust_symtab () 313 #endif 314 315 /* Forward the segment of a forwarded symbol, handle assignments that 316 just copy symbol values, etc. */ 317 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES 318 #ifndef TE_I386AIX 319 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \ 320 (SF_GET_GET_SEGMENT (dest) \ 321 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \ 322 : 0) 323 #else 324 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \ 325 (SF_GET_GET_SEGMENT (dest) && S_GET_SEGMENT (dest) == SEG_UNKNOWN \ 326 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \ 327 : 0) 328 #endif 329 #endif 330 331 /* Sanity check. */ 332 333 #ifdef TC_I960 334 #ifndef C_LEAFSTAT 335 hey ! Where is the C_LEAFSTAT definition ? i960 - coff support is depending on it. 336 #endif /* no C_LEAFSTAT */ 337 #endif /* TC_I960 */ 338 339 extern const pseudo_typeS coff_pseudo_table[]; 340 341 #ifndef obj_pop_insert 342 #define obj_pop_insert() pop_insert (coff_pseudo_table) 343 #endif 344 345 /* In COFF, if a symbol is defined using .def/.val SYM/.endef, it's OK 346 to redefine the symbol later on. This can happen if C symbols use 347 a prefix, and a symbol is defined both with and without the prefix, 348 as in start/_start/__start in gcc/libgcc1-test.c. */ 349 #define RESOLVE_SYMBOL_REDEFINITION(sym) \ 350 (SF_GET_GET_SEGMENT (sym) \ 351 ? (sym->sy_frag = frag_now, \ 352 S_SET_VALUE (sym, frag_now_fix ()), \ 353 S_SET_SEGMENT (sym, now_seg), \ 354 0) \ 355 : 0) 356 357 /* Stabs in a coff file go into their own section. */ 358 #define SEPARATE_STAB_SECTIONS 1 359 360 /* We need 12 bytes at the start of the section to hold some initial 361 information. */ 362 #define INIT_STAB_SECTION(seg) obj_coff_init_stab_section (seg) 363 364 /* Store the number of relocations in the section aux entry. */ 365 #define SET_SECTION_RELOCS(sec, relocs, n) \ 366 SA_SET_SCN_NRELOC (section_symbol (sec), n) 367 368 #define obj_app_file(name, app) c_dot_file_symbol (name, app) 369 370 extern int S_SET_DATA_TYPE (symbolS *, int); 371 extern int S_SET_STORAGE_CLASS (symbolS *, int); 372 extern int S_GET_STORAGE_CLASS (symbolS *); 373 extern void SA_SET_SYM_ENDNDX (symbolS *, symbolS *); 374 extern void coff_add_linesym (symbolS *); 375 extern void c_dot_file_symbol (const char *, int); 376 extern void coff_frob_symbol (symbolS *, int *); 377 extern void coff_adjust_symtab (void); 378 extern void coff_frob_section (segT); 379 extern void coff_adjust_section_syms (bfd *, asection *, void *); 380 extern void coff_frob_file_after_relocs (void); 381 extern void coff_obj_symbol_new_hook (symbolS *); 382 extern void coff_obj_symbol_clone_hook (symbolS *, symbolS *); 383 extern void coff_obj_read_begin_hook (void); 384 #ifdef TE_PE 385 extern void pecoff_obj_set_weak_hook (symbolS *); 386 extern void pecoff_obj_clear_weak_hook (symbolS *); 387 #endif 388 extern void obj_coff_section (int); 389 extern segT obj_coff_add_segment (const char *); 390 extern void obj_coff_section (int); 391 extern void c_dot_file_symbol (const char *, int); 392 extern segT s_get_segment (symbolS *); 393 #ifndef tc_coff_symbol_emit_hook 394 extern void tc_coff_symbol_emit_hook (symbolS *); 395 #endif 396 extern void obj_coff_pe_handle_link_once (void); 397 extern void obj_coff_init_stab_section (segT); 398 extern void c_section_header (struct internal_scnhdr *, 399 char *, long, long, long, long, 400 long, long, long, long); 401 extern void obj_coff_seh_do_final (void); 402 403 #ifndef obj_coff_generate_pdata 404 #define obj_coff_generate_pdata obj_coff_seh_do_final 405 #endif 406 407 408 #endif /* OBJ_FORMAT_H */ 409