1 /* coff object file format 2 Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 4 Free Software Foundation, Inc. 5 6 This file is part of GAS. 7 8 GAS is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3, or (at your option) 11 any later version. 12 13 GAS is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GAS; see the file COPYING. If not, write to the Free 20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23 #ifndef OBJ_FORMAT_H 24 #define OBJ_FORMAT_H 25 26 #define OBJ_COFF 1 27 28 #include "targ-cpu.h" 29 30 /* This internal_lineno crap is to stop namespace pollution from the 31 bfd internal coff headerfile. */ 32 #define internal_lineno bfd_internal_lineno 33 #include "coff/internal.h" 34 #undef internal_lineno 35 36 /* CPU-specific setup: */ 37 38 #ifdef TC_ARM 39 #include "coff/arm.h" 40 #ifndef TARGET_FORMAT 41 #define TARGET_FORMAT "coff-arm" 42 #endif 43 #endif 44 45 #ifdef TC_PPC 46 #ifdef TE_PE 47 #include "coff/powerpc.h" 48 #else 49 #include "coff/rs6000.h" 50 #endif 51 #endif 52 53 #ifdef TC_SPARC 54 #include "coff/sparc.h" 55 #endif 56 57 #ifdef TC_I386 58 #ifndef TE_PEP 59 #include "coff/x86_64.h" 60 #else 61 #include "coff/i386.h" 62 #endif 63 64 #ifdef TE_PE 65 #ifdef TE_PEP 66 extern const char *i386_target_format (void); 67 #define TARGET_FORMAT i386_target_format () 68 #define COFF_TARGET_FORMAT "pe-x86-64" 69 #else 70 #define TARGET_FORMAT "pe-i386" 71 #endif 72 #endif 73 74 #ifndef TARGET_FORMAT 75 #ifdef TE_PEP 76 #define TARGET_FORMAT "coff-x86-64" 77 #else 78 #define TARGET_FORMAT "coff-i386" 79 #endif 80 #endif 81 #endif 82 83 #ifdef TC_M68K 84 #include "coff/m68k.h" 85 #ifndef TARGET_FORMAT 86 #define TARGET_FORMAT "coff-m68k" 87 #endif 88 #endif 89 90 #ifdef TC_OR32 91 #include "coff/or32.h" 92 #define TARGET_FORMAT "coff-or32-big" 93 #endif 94 95 #ifdef TC_I960 96 #include "coff/i960.h" 97 #define TARGET_FORMAT "coff-Intel-little" 98 #endif 99 100 #ifdef TC_Z80 101 #include "coff/z80.h" 102 #define TARGET_FORMAT "coff-z80" 103 #endif 104 105 #ifdef TC_Z8K 106 #include "coff/z8k.h" 107 #define TARGET_FORMAT "coff-z8k" 108 #endif 109 110 #ifdef TC_H8300 111 #include "coff/h8300.h" 112 #define TARGET_FORMAT "coff-h8300" 113 #endif 114 115 #ifdef TC_H8500 116 #include "coff/h8500.h" 117 #define TARGET_FORMAT "coff-h8500" 118 #endif 119 120 #ifdef TC_MAXQ20 121 #include "coff/maxq.h" 122 #define TARGET_FORMAT "coff-maxq" 123 #endif 124 125 #ifdef TC_SH 126 127 #ifdef TE_PE 128 #define COFF_WITH_PE 129 #endif 130 131 #include "coff/sh.h" 132 133 #ifdef TE_PE 134 #define TARGET_FORMAT "pe-shl" 135 #else 136 137 #define TARGET_FORMAT \ 138 (!target_big_endian \ 139 ? (sh_small ? "coff-shl-small" : "coff-shl") \ 140 : (sh_small ? "coff-sh-small" : "coff-sh")) 141 142 #endif 143 #endif 144 145 #ifdef TC_MIPS 146 #define COFF_WITH_PE 147 #include "coff/mipspe.h" 148 #undef TARGET_FORMAT 149 #define TARGET_FORMAT "pe-mips" 150 #endif 151 152 #ifdef TC_TIC30 153 #include "coff/tic30.h" 154 #define TARGET_FORMAT "coff-tic30" 155 #endif 156 157 #ifdef TC_TIC4X 158 #include "coff/tic4x.h" 159 #define TARGET_FORMAT "coff2-tic4x" 160 #endif 161 162 #ifdef TC_TIC54X 163 #include "coff/tic54x.h" 164 #define TARGET_FORMAT "coff1-c54x" 165 #endif 166 167 #ifdef TC_MCORE 168 #include "coff/mcore.h" 169 #ifndef TARGET_FORMAT 170 #define TARGET_FORMAT "pe-mcore" 171 #endif 172 #endif 173 174 #ifdef TE_PE 175 /* PE weak symbols need USE_UNIQUE. */ 176 #define USE_UNIQUE 1 177 178 #define obj_set_weak_hook pecoff_obj_set_weak_hook 179 #define obj_clear_weak_hook pecoff_obj_clear_weak_hook 180 #endif 181 182 #ifndef OBJ_COFF_MAX_AUXENTRIES 183 #define OBJ_COFF_MAX_AUXENTRIES 1 184 #endif 185 186 #define obj_symbol_new_hook coff_obj_symbol_new_hook 187 #define obj_symbol_clone_hook coff_obj_symbol_clone_hook 188 #define obj_read_begin_hook coff_obj_read_begin_hook 189 190 #include "bfd/libcoff.h" 191 192 #define OUTPUT_FLAVOR bfd_target_coff_flavour 193 194 /* Alter the field names, for now, until we've fixed up the other 195 references to use the new name. */ 196 #ifdef TC_I960 197 #define TC_SYMFIELD_TYPE symbolS * 198 #define sy_tc bal 199 #endif 200 201 #define OBJ_SYMFIELD_TYPE unsigned long 202 #define sy_obj sy_flags 203 204 /* We can't use the predefined section symbols in bfd/section.c, as 205 COFF symbols have extra fields. See bfd/libcoff.h:coff_symbol_type. */ 206 #ifndef obj_sec_sym_ok_for_reloc 207 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0) 208 #endif 209 210 #define SYM_AUXENT(S) \ 211 (&coffsymbol (symbol_get_bfdsym (S))->native[1].u.auxent) 212 #define SYM_AUXINFO(S) \ 213 (&coffsymbol (symbol_get_bfdsym (S))->native[1]) 214 215 /* The number of auxiliary entries. */ 216 #define S_GET_NUMBER_AUXILIARY(s) \ 217 (coffsymbol (symbol_get_bfdsym (s))->native->u.syment.n_numaux) 218 /* The number of auxiliary entries. */ 219 #define S_SET_NUMBER_AUXILIARY(s, v) (S_GET_NUMBER_AUXILIARY (s) = (v)) 220 221 /* True if a symbol name is in the string table, i.e. its length is > 8. */ 222 #define S_IS_STRING(s) (strlen (S_GET_NAME (s)) > 8 ? 1 : 0) 223 224 /* Auxiliary entry macros. SA_ stands for symbol auxiliary. */ 225 /* Omit the tv related fields. */ 226 /* Accessors. */ 227 228 #define SA_GET_SYM_TAGNDX(s) (SYM_AUXENT (s)->x_sym.x_tagndx.l) 229 #define SA_GET_SYM_LNNO(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno) 230 #define SA_GET_SYM_SIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size) 231 #define SA_GET_SYM_FSIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize) 232 #define SA_GET_SYM_LNNOPTR(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr) 233 #define SA_GET_SYM_ENDNDX(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx) 234 #define SA_GET_SYM_DIMEN(s,i) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)]) 235 #define SA_GET_FILE_FNAME(s) (SYM_AUXENT (s)->x_file.x_fname) 236 #define SA_GET_SCN_SCNLEN(s) (SYM_AUXENT (s)->x_scn.x_scnlen) 237 #define SA_GET_SCN_NRELOC(s) (SYM_AUXENT (s)->x_scn.x_nreloc) 238 #define SA_GET_SCN_NLINNO(s) (SYM_AUXENT (s)->x_scn.x_nlinno) 239 240 #define SA_SET_SYM_LNNO(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno = (v)) 241 #define SA_SET_SYM_SIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size = (v)) 242 #define SA_SET_SYM_FSIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize = (v)) 243 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr = (v)) 244 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)] = (v)) 245 #define SA_SET_FILE_FNAME(s,v) strncpy (SYM_AUXENT (s)->x_file.x_fname, (v), FILNMLEN) 246 #define SA_SET_SCN_SCNLEN(s,v) (SYM_AUXENT (s)->x_scn.x_scnlen = (v)) 247 #define SA_SET_SCN_NRELOC(s,v) (SYM_AUXENT (s)->x_scn.x_nreloc = (v)) 248 #define SA_SET_SCN_NLINNO(s,v) (SYM_AUXENT (s)->x_scn.x_nlinno = (v)) 249 250 /* Internal use only definitions. SF_ stands for symbol flags. 251 252 These values can be assigned to sy_symbol.ost_flags field of a symbolS. 253 254 You'll break i960 if you shift the SYSPROC bits anywhere else. for 255 more on the balname/callname hack, see tc-i960.h. b.out is done 256 differently. */ 257 258 #define SF_I960_MASK 0x000001ff /* Bits 0-8 are used by the i960 port. */ 259 #define SF_SYSPROC 0x0000003f /* bits 0-5 are used to store the sysproc number. */ 260 #define SF_IS_SYSPROC 0x00000040 /* bit 6 marks symbols that are sysprocs. */ 261 #define SF_BALNAME 0x00000080 /* bit 7 marks BALNAME symbols. */ 262 #define SF_CALLNAME 0x00000100 /* bit 8 marks CALLNAME symbols. */ 263 264 #define SF_NORMAL_MASK 0x0000ffff /* bits 12-15 are general purpose. */ 265 266 #define SF_STATICS 0x00001000 /* Mark the .text & all symbols. */ 267 #define SF_DEFINED 0x00002000 /* Symbol is defined in this file. */ 268 #define SF_STRING 0x00004000 /* Symbol name length > 8. */ 269 #define SF_LOCAL 0x00008000 /* Symbol must not be emitted. */ 270 271 #define SF_DEBUG_MASK 0xffff0000 /* bits 16-31 are debug info. */ 272 273 #define SF_FUNCTION 0x00010000 /* The symbol is a function. */ 274 #define SF_PROCESS 0x00020000 /* Process symbol before write. */ 275 #define SF_TAGGED 0x00040000 /* Is associated with a tag. */ 276 #define SF_TAG 0x00080000 /* Is a tag. */ 277 #define SF_DEBUG 0x00100000 /* Is in debug or abs section. */ 278 #define SF_GET_SEGMENT 0x00200000 /* Get the section of the forward symbol. */ 279 /* All other bits are unused. */ 280 281 /* Accessors. */ 282 #define SF_GET(s) (* symbol_get_obj (s)) 283 #define SF_GET_DEBUG(s) (symbol_get_bfdsym (s)->flags & BSF_DEBUGGING) 284 #define SF_SET_DEBUG(s) (symbol_get_bfdsym (s)->flags |= BSF_DEBUGGING) 285 #define SF_GET_NORMAL_FIELD(s) (SF_GET (s) & SF_NORMAL_MASK) 286 #define SF_GET_DEBUG_FIELD(s) (SF_GET (s) & SF_DEBUG_MASK) 287 #define SF_GET_FILE(s) (SF_GET (s) & SF_FILE) 288 #define SF_GET_STATICS(s) (SF_GET (s) & SF_STATICS) 289 #define SF_GET_DEFINED(s) (SF_GET (s) & SF_DEFINED) 290 #define SF_GET_STRING(s) (SF_GET (s) & SF_STRING) 291 #define SF_GET_LOCAL(s) (SF_GET (s) & SF_LOCAL) 292 #define SF_GET_FUNCTION(s) (SF_GET (s) & SF_FUNCTION) 293 #define SF_GET_PROCESS(s) (SF_GET (s) & SF_PROCESS) 294 #define SF_GET_TAGGED(s) (SF_GET (s) & SF_TAGGED) 295 #define SF_GET_TAG(s) (SF_GET (s) & SF_TAG) 296 #define SF_GET_GET_SEGMENT(s) (SF_GET (s) & SF_GET_SEGMENT) 297 #define SF_GET_I960(s) (SF_GET (s) & SF_I960_MASK) /* Used by i960. */ 298 #define SF_GET_BALNAME(s) (SF_GET (s) & SF_BALNAME) /* Used by i960. */ 299 #define SF_GET_CALLNAME(s) (SF_GET (s) & SF_CALLNAME) /* Used by i960. */ 300 #define SF_GET_IS_SYSPROC(s) (SF_GET (s) & SF_IS_SYSPROC) /* Used by i960. */ 301 #define SF_GET_SYSPROC(s) (SF_GET (s) & SF_SYSPROC) /* Used by i960. */ 302 303 /* Modifiers. */ 304 #define SF_SET(s,v) (SF_GET (s) = (v)) 305 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK)) 306 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK)) 307 #define SF_SET_FILE(s) (SF_GET (s) |= SF_FILE) 308 #define SF_SET_STATICS(s) (SF_GET (s) |= SF_STATICS) 309 #define SF_SET_DEFINED(s) (SF_GET (s) |= SF_DEFINED) 310 #define SF_SET_STRING(s) (SF_GET (s) |= SF_STRING) 311 #define SF_SET_LOCAL(s) (SF_GET (s) |= SF_LOCAL) 312 #define SF_CLEAR_LOCAL(s) (SF_GET (s) &= ~SF_LOCAL) 313 #define SF_SET_FUNCTION(s) (SF_GET (s) |= SF_FUNCTION) 314 #define SF_SET_PROCESS(s) (SF_GET (s) |= SF_PROCESS) 315 #define SF_SET_TAGGED(s) (SF_GET (s) |= SF_TAGGED) 316 #define SF_SET_TAG(s) (SF_GET (s) |= SF_TAG) 317 #define SF_SET_GET_SEGMENT(s) (SF_GET (s) |= SF_GET_SEGMENT) 318 #define SF_SET_I960(s,v) (SF_GET (s) |= ((v) & SF_I960_MASK)) /* Used by i960. */ 319 #define SF_SET_BALNAME(s) (SF_GET (s) |= SF_BALNAME) /* Used by i960. */ 320 #define SF_SET_CALLNAME(s) (SF_GET (s) |= SF_CALLNAME) /* Used by i960. */ 321 #define SF_SET_IS_SYSPROC(s) (SF_GET (s) |= SF_IS_SYSPROC) /* Used by i960. */ 322 #define SF_SET_SYSPROC(s,v) (SF_GET (s) |= ((v) & SF_SYSPROC)) /* Used by i960. */ 323 324 325 /* Line number handling. */ 326 extern int text_lineno_number; 327 extern int coff_line_base; 328 extern int coff_n_line_nos; 329 extern symbolS *coff_last_function; 330 331 #define obj_emit_lineno(WHERE, LINE, FILE_START) abort () 332 #define obj_app_file(name, app) c_dot_file_symbol (name, app) 333 #define obj_frob_symbol(S,P) coff_frob_symbol (S, & P) 334 #define obj_frob_section(S) coff_frob_section (S) 335 #define obj_frob_file_after_relocs() coff_frob_file_after_relocs () 336 #ifndef obj_adjust_symtab 337 #define obj_adjust_symtab() coff_adjust_symtab () 338 #endif 339 340 /* Forward the segment of a forwarded symbol, handle assignments that 341 just copy symbol values, etc. */ 342 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES 343 #ifndef TE_I386AIX 344 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \ 345 (SF_GET_GET_SEGMENT (dest) \ 346 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \ 347 : 0) 348 #else 349 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \ 350 (SF_GET_GET_SEGMENT (dest) && S_GET_SEGMENT (dest) == SEG_UNKNOWN \ 351 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \ 352 : 0) 353 #endif 354 #endif 355 356 /* Sanity check. */ 357 358 #ifdef TC_I960 359 #ifndef C_LEAFSTAT 360 hey ! Where is the C_LEAFSTAT definition ? i960 - coff support is depending on it. 361 #endif /* no C_LEAFSTAT */ 362 #endif /* TC_I960 */ 363 364 extern const pseudo_typeS coff_pseudo_table[]; 365 366 #ifndef obj_pop_insert 367 #define obj_pop_insert() pop_insert (coff_pseudo_table) 368 #endif 369 370 /* In COFF, if a symbol is defined using .def/.val SYM/.endef, it's OK 371 to redefine the symbol later on. This can happen if C symbols use 372 a prefix, and a symbol is defined both with and without the prefix, 373 as in start/_start/__start in gcc/libgcc1-test.c. */ 374 #define RESOLVE_SYMBOL_REDEFINITION(sym) \ 375 (SF_GET_GET_SEGMENT (sym) \ 376 ? (sym->sy_frag = frag_now, \ 377 S_SET_VALUE (sym, frag_now_fix ()), \ 378 S_SET_SEGMENT (sym, now_seg), \ 379 0) \ 380 : 0) 381 382 /* Stabs in a coff file go into their own section. */ 383 #define SEPARATE_STAB_SECTIONS 1 384 385 /* We need 12 bytes at the start of the section to hold some initial 386 information. */ 387 #define INIT_STAB_SECTION(seg) obj_coff_init_stab_section (seg) 388 389 /* Store the number of relocations in the section aux entry. */ 390 #define SET_SECTION_RELOCS(sec, relocs, n) \ 391 SA_SET_SCN_NRELOC (section_symbol (sec), n) 392 393 #define obj_app_file(name, app) c_dot_file_symbol (name, app) 394 395 extern int S_SET_DATA_TYPE (symbolS *, int); 396 extern int S_SET_STORAGE_CLASS (symbolS *, int); 397 extern int S_GET_STORAGE_CLASS (symbolS *); 398 extern void SA_SET_SYM_ENDNDX (symbolS *, symbolS *); 399 extern void coff_add_linesym (symbolS *); 400 extern void c_dot_file_symbol (const char *, int); 401 extern void coff_frob_symbol (symbolS *, int *); 402 extern void coff_adjust_symtab (void); 403 extern void coff_frob_section (segT); 404 extern void coff_adjust_section_syms (bfd *, asection *, void *); 405 extern void coff_frob_file_after_relocs (void); 406 extern void coff_obj_symbol_new_hook (symbolS *); 407 extern void coff_obj_symbol_clone_hook (symbolS *, symbolS *); 408 extern void coff_obj_read_begin_hook (void); 409 #ifdef TE_PE 410 extern void pecoff_obj_set_weak_hook (symbolS *); 411 extern void pecoff_obj_clear_weak_hook (symbolS *); 412 #endif 413 extern void obj_coff_section (int); 414 extern segT obj_coff_add_segment (const char *); 415 extern void obj_coff_section (int); 416 extern void c_dot_file_symbol (const char *, int); 417 extern segT s_get_segment (symbolS *); 418 #ifndef tc_coff_symbol_emit_hook 419 extern void tc_coff_symbol_emit_hook (symbolS *); 420 #endif 421 extern void obj_coff_pe_handle_link_once (void); 422 extern void obj_coff_init_stab_section (segT); 423 extern void c_section_header (struct internal_scnhdr *, 424 char *, long, long, long, long, 425 long, long, long, long); 426 #endif /* OBJ_FORMAT_H */ 427