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