| 1 | /* Linker command language support. |
| 2 | Copyright (C) 1991, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GLD, the Gnu Linker. |
| 5 | |
| 6 | GLD 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 1, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GLD 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 GLD; see the file COPYING. If not, write to the Free |
| 18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 19 | 02111-1307, USA. */ |
| 20 | |
| 21 | #include "bfd.h" |
| 22 | #include "sysdep.h" |
| 23 | #include "libiberty.h" |
| 24 | #include "bfdlink.h" |
| 25 | |
| 26 | #include "ld.h" |
| 27 | #include "ldmain.h" |
| 28 | #include "ldgram.h" |
| 29 | #include "ldexp.h" |
| 30 | #include "ldlang.h" |
| 31 | #include "ldemul.h" |
| 32 | #include "ldlex.h" |
| 33 | #include "ldmisc.h" |
| 34 | #include "ldctor.h" |
| 35 | #include "ldfile.h" |
| 36 | #include "fnmatch.h" |
| 37 | |
| 38 | #include <ctype.h> |
| 39 | |
| 40 | /* FORWARDS */ |
| 41 | static lang_statement_union_type *new_statement PARAMS ((enum statement_enum, |
| 42 | size_t, |
| 43 | lang_statement_list_type*)); |
| 44 | |
| 45 | |
| 46 | /* LOCALS */ |
| 47 | static struct obstack stat_obstack; |
| 48 | |
| 49 | #define obstack_chunk_alloc xmalloc |
| 50 | #define obstack_chunk_free free |
| 51 | static CONST char *startup_file; |
| 52 | static lang_statement_list_type input_file_chain; |
| 53 | static boolean placed_commons = false; |
| 54 | static lang_output_section_statement_type *default_common_section; |
| 55 | static boolean map_option_f; |
| 56 | static bfd_vma print_dot; |
| 57 | static lang_input_statement_type *first_file; |
| 58 | static lang_statement_list_type lang_output_section_statement; |
| 59 | static CONST char *current_target; |
| 60 | static CONST char *output_target; |
| 61 | static lang_statement_list_type statement_list; |
| 62 | static struct lang_phdr *lang_phdr_list; |
| 63 | |
| 64 | static void lang_for_each_statement_worker |
| 65 | PARAMS ((void (*func) (lang_statement_union_type *), |
| 66 | lang_statement_union_type *s)); |
| 67 | static lang_input_statement_type *new_afile |
| 68 | PARAMS ((const char *name, lang_input_file_enum_type file_type, |
| 69 | const char *target, boolean add_to_list)); |
| 70 | static void init_os PARAMS ((lang_output_section_statement_type *s)); |
| 71 | static void exp_init_os PARAMS ((etree_type *)); |
| 72 | static void section_already_linked PARAMS ((bfd *, asection *, PTR)); |
| 73 | static boolean wildcardp PARAMS ((const char *)); |
| 74 | static void wild_section PARAMS ((lang_wild_statement_type *ptr, |
| 75 | const char *section, |
| 76 | lang_input_statement_type *file, |
| 77 | lang_output_section_statement_type *output)); |
| 78 | static lang_input_statement_type *lookup_name PARAMS ((const char *name)); |
| 79 | static void load_symbols PARAMS ((lang_input_statement_type *entry, |
| 80 | lang_statement_list_type *)); |
| 81 | static void wild_file PARAMS ((lang_wild_statement_type *, const char *, |
| 82 | lang_input_statement_type *, |
| 83 | lang_output_section_statement_type *)); |
| 84 | static void wild PARAMS ((lang_wild_statement_type *s, |
| 85 | const char *section, const char *file, |
| 86 | const char *target, |
| 87 | lang_output_section_statement_type *output)); |
| 88 | static bfd *open_output PARAMS ((const char *name)); |
| 89 | static void ldlang_open_output PARAMS ((lang_statement_union_type *statement)); |
| 90 | static void open_input_bfds |
| 91 | PARAMS ((lang_statement_union_type *statement, boolean)); |
| 92 | static void lang_reasonable_defaults PARAMS ((void)); |
| 93 | static void lang_place_undefineds PARAMS ((void)); |
| 94 | static void map_input_to_output_sections |
| 95 | PARAMS ((lang_statement_union_type *s, |
| 96 | const char *target, |
| 97 | lang_output_section_statement_type *output_section_statement)); |
| 98 | static void print_output_section_statement |
| 99 | PARAMS ((lang_output_section_statement_type *output_section_statement)); |
| 100 | static void print_assignment |
| 101 | PARAMS ((lang_assignment_statement_type *assignment, |
| 102 | lang_output_section_statement_type *output_section)); |
| 103 | static void print_input_statement PARAMS ((lang_input_statement_type *statm)); |
| 104 | static boolean print_one_symbol PARAMS ((struct bfd_link_hash_entry *, PTR)); |
| 105 | static void print_input_section PARAMS ((lang_input_section_type *in)); |
| 106 | static void print_fill_statement PARAMS ((lang_fill_statement_type *fill)); |
| 107 | static void print_data_statement PARAMS ((lang_data_statement_type *data)); |
| 108 | static void print_address_statement PARAMS ((lang_address_statement_type *)); |
| 109 | static void print_reloc_statement PARAMS ((lang_reloc_statement_type *reloc)); |
| 110 | static void print_padding_statement PARAMS ((lang_padding_statement_type *s)); |
| 111 | static void print_wild_statement |
| 112 | PARAMS ((lang_wild_statement_type *w, |
| 113 | lang_output_section_statement_type *os)); |
| 114 | static void print_group |
| 115 | PARAMS ((lang_group_statement_type *, lang_output_section_statement_type *)); |
| 116 | static void print_statement PARAMS ((lang_statement_union_type *s, |
| 117 | lang_output_section_statement_type *os)); |
| 118 | static void print_statement_list PARAMS ((lang_statement_union_type *s, |
| 119 | lang_output_section_statement_type *os)); |
| 120 | static void print_statements PARAMS ((void)); |
| 121 | static bfd_vma insert_pad PARAMS ((lang_statement_union_type **this_ptr, |
| 122 | fill_type fill, unsigned int power, |
| 123 | asection *output_section_statement, |
| 124 | bfd_vma dot)); |
| 125 | static bfd_vma size_input_section |
| 126 | PARAMS ((lang_statement_union_type **this_ptr, |
| 127 | lang_output_section_statement_type *output_section_statement, |
| 128 | fill_type fill, bfd_vma dot, boolean relax)); |
| 129 | static void lang_finish PARAMS ((void)); |
| 130 | static void lang_check PARAMS ((void)); |
| 131 | static void lang_common PARAMS ((void)); |
| 132 | static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR)); |
| 133 | static void lang_place_orphans PARAMS ((void)); |
| 134 | static int topower PARAMS ((int)); |
| 135 | static void lang_set_startof PARAMS ((void)); |
| 136 | static void reset_memory_regions PARAMS ((void)); |
| 137 | static void lang_record_phdrs PARAMS ((void)); |
| 138 | |
| 139 | /* EXPORTS */ |
| 140 | lang_output_section_statement_type *abs_output_section; |
| 141 | lang_statement_list_type *stat_ptr = &statement_list; |
| 142 | lang_statement_list_type file_chain = { 0 }; |
| 143 | const char *entry_symbol = NULL; |
| 144 | boolean entry_from_cmdline; |
| 145 | boolean lang_has_input_file = false; |
| 146 | boolean had_output_filename = false; |
| 147 | boolean lang_float_flag = false; |
| 148 | boolean delete_output_file_on_failure = false; |
| 149 | struct lang_nocrossrefs *nocrossref_list; |
| 150 | |
| 151 | etree_type *base; /* Relocation base - or null */ |
| 152 | |
| 153 | |
| 154 | #if defined(__STDC__) || defined(ALMOST_STDC) |
| 155 | #define cat(a,b) a##b |
| 156 | #else |
| 157 | #define cat(a,b) a/**/b |
| 158 | #endif |
| 159 | |
| 160 | #define new_stat(x,y) (cat(x,_type)*) new_statement(cat(x,_enum), sizeof(cat(x,_type)),y) |
| 161 | |
| 162 | #define outside_section_address(q) ( (q)->output_offset + (q)->output_section->vma) |
| 163 | |
| 164 | #define outside_symbol_address(q) ((q)->value + outside_section_address(q->section)) |
| 165 | |
| 166 | #define SECTION_NAME_MAP_LENGTH (16) |
| 167 | |
| 168 | PTR |
| 169 | stat_alloc (size) |
| 170 | size_t size; |
| 171 | { |
| 172 | return obstack_alloc (&stat_obstack, size); |
| 173 | } |
| 174 | |
| 175 | /*---------------------------------------------------------------------- |
| 176 | lang_for_each_statement walks the parse tree and calls the provided |
| 177 | function for each node |
| 178 | */ |
| 179 | |
| 180 | static void |
| 181 | lang_for_each_statement_worker (func, s) |
| 182 | void (*func) PARAMS ((lang_statement_union_type *)); |
| 183 | lang_statement_union_type *s; |
| 184 | { |
| 185 | for (; s != (lang_statement_union_type *) NULL; s = s->next) |
| 186 | { |
| 187 | func (s); |
| 188 | |
| 189 | switch (s->header.type) |
| 190 | { |
| 191 | case lang_constructors_statement_enum: |
| 192 | lang_for_each_statement_worker (func, constructor_list.head); |
| 193 | break; |
| 194 | case lang_output_section_statement_enum: |
| 195 | lang_for_each_statement_worker |
| 196 | (func, |
| 197 | s->output_section_statement.children.head); |
| 198 | break; |
| 199 | case lang_wild_statement_enum: |
| 200 | lang_for_each_statement_worker |
| 201 | (func, |
| 202 | s->wild_statement.children.head); |
| 203 | break; |
| 204 | case lang_group_statement_enum: |
| 205 | lang_for_each_statement_worker (func, |
| 206 | s->group_statement.children.head); |
| 207 | break; |
| 208 | case lang_data_statement_enum: |
| 209 | case lang_reloc_statement_enum: |
| 210 | case lang_object_symbols_statement_enum: |
| 211 | case lang_output_statement_enum: |
| 212 | case lang_target_statement_enum: |
| 213 | case lang_input_section_enum: |
| 214 | case lang_input_statement_enum: |
| 215 | case lang_assignment_statement_enum: |
| 216 | case lang_padding_statement_enum: |
| 217 | case lang_address_statement_enum: |
| 218 | case lang_fill_statement_enum: |
| 219 | break; |
| 220 | default: |
| 221 | FAIL (); |
| 222 | break; |
| 223 | } |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | void |
| 228 | lang_for_each_statement (func) |
| 229 | void (*func) PARAMS ((lang_statement_union_type *)); |
| 230 | { |
| 231 | lang_for_each_statement_worker (func, |
| 232 | statement_list.head); |
| 233 | } |
| 234 | |
| 235 | /*----------------------------------------------------------------------*/ |
| 236 | void |
| 237 | lang_list_init (list) |
| 238 | lang_statement_list_type *list; |
| 239 | { |
| 240 | list->head = (lang_statement_union_type *) NULL; |
| 241 | list->tail = &list->head; |
| 242 | } |
| 243 | |
| 244 | /*---------------------------------------------------------------------- |
| 245 | |
| 246 | build a new statement node for the parse tree |
| 247 | |
| 248 | */ |
| 249 | |
| 250 | static |
| 251 | lang_statement_union_type * |
| 252 | new_statement (type, size, list) |
| 253 | enum statement_enum type; |
| 254 | size_t size; |
| 255 | lang_statement_list_type * list; |
| 256 | { |
| 257 | lang_statement_union_type *new = (lang_statement_union_type *) |
| 258 | stat_alloc (size); |
| 259 | |
| 260 | new->header.type = type; |
| 261 | new->header.next = (lang_statement_union_type *) NULL; |
| 262 | lang_statement_append (list, new, &new->header.next); |
| 263 | return new; |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | Build a new input file node for the language. There are several ways |
| 268 | in which we treat an input file, eg, we only look at symbols, or |
| 269 | prefix it with a -l etc. |
| 270 | |
| 271 | We can be supplied with requests for input files more than once; |
| 272 | they may, for example be split over serveral lines like foo.o(.text) |
| 273 | foo.o(.data) etc, so when asked for a file we check that we havn't |
| 274 | got it already so we don't duplicate the bfd. |
| 275 | |
| 276 | */ |
| 277 | static lang_input_statement_type * |
| 278 | new_afile (name, file_type, target, add_to_list) |
| 279 | CONST char *name; |
| 280 | lang_input_file_enum_type file_type; |
| 281 | CONST char *target; |
| 282 | boolean add_to_list; |
| 283 | { |
| 284 | lang_input_statement_type *p; |
| 285 | |
| 286 | if (add_to_list) |
| 287 | p = new_stat (lang_input_statement, stat_ptr); |
| 288 | else |
| 289 | { |
| 290 | p = ((lang_input_statement_type *) |
| 291 | stat_alloc (sizeof (lang_input_statement_type))); |
| 292 | p->header.next = NULL; |
| 293 | } |
| 294 | |
| 295 | lang_has_input_file = true; |
| 296 | p->target = target; |
| 297 | switch (file_type) |
| 298 | { |
| 299 | case lang_input_file_is_symbols_only_enum: |
| 300 | p->filename = name; |
| 301 | p->is_archive = false; |
| 302 | p->real = true; |
| 303 | p->local_sym_name = name; |
| 304 | p->just_syms_flag = true; |
| 305 | p->search_dirs_flag = false; |
| 306 | break; |
| 307 | case lang_input_file_is_fake_enum: |
| 308 | p->filename = name; |
| 309 | p->is_archive = false; |
| 310 | p->real = false; |
| 311 | p->local_sym_name = name; |
| 312 | p->just_syms_flag = false; |
| 313 | p->search_dirs_flag = false; |
| 314 | break; |
| 315 | case lang_input_file_is_l_enum: |
| 316 | p->is_archive = true; |
| 317 | p->filename = name; |
| 318 | p->real = true; |
| 319 | p->local_sym_name = concat ("-l", name, (const char *) NULL); |
| 320 | p->just_syms_flag = false; |
| 321 | p->search_dirs_flag = true; |
| 322 | break; |
| 323 | case lang_input_file_is_marker_enum: |
| 324 | p->filename = name; |
| 325 | p->is_archive = false; |
| 326 | p->real = false; |
| 327 | p->local_sym_name = name; |
| 328 | p->just_syms_flag = false; |
| 329 | p->search_dirs_flag = true; |
| 330 | break; |
| 331 | case lang_input_file_is_search_file_enum: |
| 332 | p->filename = name; |
| 333 | p->is_archive = false; |
| 334 | p->real = true; |
| 335 | p->local_sym_name = name; |
| 336 | p->just_syms_flag = false; |
| 337 | p->search_dirs_flag = true; |
| 338 | break; |
| 339 | case lang_input_file_is_file_enum: |
| 340 | p->filename = name; |
| 341 | p->is_archive = false; |
| 342 | p->real = true; |
| 343 | p->local_sym_name = name; |
| 344 | p->just_syms_flag = false; |
| 345 | p->search_dirs_flag = false; |
| 346 | break; |
| 347 | default: |
| 348 | FAIL (); |
| 349 | } |
| 350 | p->the_bfd = (bfd *) NULL; |
| 351 | p->asymbols = (asymbol **) NULL; |
| 352 | p->next_real_file = (lang_statement_union_type *) NULL; |
| 353 | p->next = (lang_statement_union_type *) NULL; |
| 354 | p->symbol_count = 0; |
| 355 | p->dynamic = config.dynamic_link; |
| 356 | p->whole_archive = whole_archive; |
| 357 | p->loaded = false; |
| 358 | lang_statement_append (&input_file_chain, |
| 359 | (lang_statement_union_type *) p, |
| 360 | &p->next_real_file); |
| 361 | return p; |
| 362 | } |
| 363 | |
| 364 | lang_input_statement_type * |
| 365 | lang_add_input_file (name, file_type, target) |
| 366 | CONST char *name; |
| 367 | lang_input_file_enum_type file_type; |
| 368 | CONST char *target; |
| 369 | { |
| 370 | lang_has_input_file = true; |
| 371 | return new_afile (name, file_type, target, true); |
| 372 | } |
| 373 | |
| 374 | /* Build enough state so that the parser can build its tree */ |
| 375 | void |
| 376 | lang_init () |
| 377 | { |
| 378 | obstack_begin (&stat_obstack, 1000); |
| 379 | |
| 380 | stat_ptr = &statement_list; |
| 381 | |
| 382 | lang_list_init (stat_ptr); |
| 383 | |
| 384 | lang_list_init (&input_file_chain); |
| 385 | lang_list_init (&lang_output_section_statement); |
| 386 | lang_list_init (&file_chain); |
| 387 | first_file = lang_add_input_file ((char *) NULL, |
| 388 | lang_input_file_is_marker_enum, |
| 389 | (char *) NULL); |
| 390 | abs_output_section = lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME); |
| 391 | |
| 392 | abs_output_section->bfd_section = bfd_abs_section_ptr; |
| 393 | |
| 394 | } |
| 395 | |
| 396 | /*---------------------------------------------------------------------- |
| 397 | A region is an area of memory declared with the |
| 398 | MEMORY { name:org=exp, len=exp ... } |
| 399 | syntax. |
| 400 | |
| 401 | We maintain a list of all the regions here |
| 402 | |
| 403 | If no regions are specified in the script, then the default is used |
| 404 | which is created when looked up to be the entire data space |
| 405 | */ |
| 406 | |
| 407 | static lang_memory_region_type *lang_memory_region_list; |
| 408 | static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list; |
| 409 | |
| 410 | lang_memory_region_type * |
| 411 | lang_memory_region_lookup (name) |
| 412 | CONST char *CONST name; |
| 413 | { |
| 414 | |
| 415 | lang_memory_region_type *p = lang_memory_region_list; |
| 416 | |
| 417 | for (p = lang_memory_region_list; |
| 418 | p != (lang_memory_region_type *) NULL; |
| 419 | p = p->next) |
| 420 | { |
| 421 | if (strcmp (p->name, name) == 0) |
| 422 | { |
| 423 | return p; |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | #if 0 |
| 428 | /* This code used to always use the first region in the list as the |
| 429 | default region. I changed it to instead use a region |
| 430 | encompassing all of memory as the default region. This permits |
| 431 | NOLOAD sections to work reasonably without requiring a region. |
| 432 | People should specify what region they mean, if they really want |
| 433 | a region. */ |
| 434 | if (strcmp (name, "*default*") == 0) |
| 435 | { |
| 436 | if (lang_memory_region_list != (lang_memory_region_type *) NULL) |
| 437 | { |
| 438 | return lang_memory_region_list; |
| 439 | } |
| 440 | } |
| 441 | #endif |
| 442 | |
| 443 | { |
| 444 | lang_memory_region_type *new = |
| 445 | (lang_memory_region_type *) stat_alloc (sizeof (lang_memory_region_type)); |
| 446 | |
| 447 | new->name = buystring (name); |
| 448 | new->next = (lang_memory_region_type *) NULL; |
| 449 | |
| 450 | *lang_memory_region_list_tail = new; |
| 451 | lang_memory_region_list_tail = &new->next; |
| 452 | new->origin = 0; |
| 453 | new->length = ~(bfd_size_type)0; |
| 454 | new->current = 0; |
| 455 | new->had_full_message = false; |
| 456 | |
| 457 | return new; |
| 458 | } |
| 459 | } |
| 460 | |
| 461 | |
| 462 | lang_output_section_statement_type * |
| 463 | lang_output_section_find (name) |
| 464 | CONST char *CONST name; |
| 465 | { |
| 466 | lang_statement_union_type *u; |
| 467 | lang_output_section_statement_type *lookup; |
| 468 | |
| 469 | for (u = lang_output_section_statement.head; |
| 470 | u != (lang_statement_union_type *) NULL; |
| 471 | u = lookup->next) |
| 472 | { |
| 473 | lookup = &u->output_section_statement; |
| 474 | if (strcmp (name, lookup->name) == 0) |
| 475 | { |
| 476 | return lookup; |
| 477 | } |
| 478 | } |
| 479 | return (lang_output_section_statement_type *) NULL; |
| 480 | } |
| 481 | |
| 482 | lang_output_section_statement_type * |
| 483 | lang_output_section_statement_lookup (name) |
| 484 | CONST char *CONST name; |
| 485 | { |
| 486 | lang_output_section_statement_type *lookup; |
| 487 | |
| 488 | lookup = lang_output_section_find (name); |
| 489 | if (lookup == (lang_output_section_statement_type *) NULL) |
| 490 | { |
| 491 | |
| 492 | lookup = (lang_output_section_statement_type *) |
| 493 | new_stat (lang_output_section_statement, stat_ptr); |
| 494 | lookup->region = (lang_memory_region_type *) NULL; |
| 495 | lookup->fill = 0; |
| 496 | lookup->block_value = 1; |
| 497 | lookup->name = name; |
| 498 | |
| 499 | lookup->next = (lang_statement_union_type *) NULL; |
| 500 | lookup->bfd_section = (asection *) NULL; |
| 501 | lookup->processed = false; |
| 502 | lookup->sectype = normal_section; |
| 503 | lookup->addr_tree = (etree_type *) NULL; |
| 504 | lang_list_init (&lookup->children); |
| 505 | |
| 506 | lookup->memspec = (CONST char *) NULL; |
| 507 | lookup->flags = 0; |
| 508 | lookup->subsection_alignment = -1; |
| 509 | lookup->section_alignment = -1; |
| 510 | lookup->load_base = (union etree_union *) NULL; |
| 511 | lookup->phdrs = NULL; |
| 512 | |
| 513 | lang_statement_append (&lang_output_section_statement, |
| 514 | (lang_statement_union_type *) lookup, |
| 515 | &lookup->next); |
| 516 | } |
| 517 | return lookup; |
| 518 | } |
| 519 | |
| 520 | void |
| 521 | lang_map () |
| 522 | { |
| 523 | lang_memory_region_type *m; |
| 524 | |
| 525 | minfo ("\nMemory Configuration\n\n"); |
| 526 | fprintf (config.map_file, "%-16s %-18s %-18s\n", |
| 527 | "Name", "Origin", "Length"); |
| 528 | |
| 529 | for (m = lang_memory_region_list; |
| 530 | m != (lang_memory_region_type *) NULL; |
| 531 | m = m->next) |
| 532 | { |
| 533 | char buf[100]; |
| 534 | int len; |
| 535 | |
| 536 | fprintf (config.map_file, "%-16s ", m->name); |
| 537 | |
| 538 | sprintf_vma (buf, m->origin); |
| 539 | minfo ("0x%s ", buf); |
| 540 | len = strlen (buf); |
| 541 | while (len < 16) |
| 542 | { |
| 543 | print_space (); |
| 544 | ++len; |
| 545 | } |
| 546 | |
| 547 | minfo ("0x%V\n", m->length); |
| 548 | } |
| 549 | |
| 550 | fprintf (config.map_file, "\nLinker script and memory map\n\n"); |
| 551 | |
| 552 | print_statements (); |
| 553 | } |
| 554 | |
| 555 | /* Initialize an output section. */ |
| 556 | |
| 557 | static void |
| 558 | init_os (s) |
| 559 | lang_output_section_statement_type *s; |
| 560 | { |
| 561 | section_userdata_type *new; |
| 562 | |
| 563 | if (s->bfd_section != NULL) |
| 564 | return; |
| 565 | |
| 566 | if (strcmp (s->name, DISCARD_SECTION_NAME) == 0) |
| 567 | einfo ("%P%F: Illegal use of `%s' section", DISCARD_SECTION_NAME); |
| 568 | |
| 569 | new = ((section_userdata_type *) |
| 570 | stat_alloc (sizeof (section_userdata_type))); |
| 571 | |
| 572 | s->bfd_section = bfd_get_section_by_name (output_bfd, s->name); |
| 573 | if (s->bfd_section == (asection *) NULL) |
| 574 | s->bfd_section = bfd_make_section (output_bfd, s->name); |
| 575 | if (s->bfd_section == (asection *) NULL) |
| 576 | { |
| 577 | einfo ("%P%F: output format %s cannot represent section called %s\n", |
| 578 | output_bfd->xvec->name, s->name); |
| 579 | } |
| 580 | s->bfd_section->output_section = s->bfd_section; |
| 581 | |
| 582 | /* We initialize an output sections output offset to minus its own */ |
| 583 | /* vma to allow us to output a section through itself */ |
| 584 | s->bfd_section->output_offset = 0; |
| 585 | get_userdata (s->bfd_section) = (PTR) new; |
| 586 | |
| 587 | /* If there is a base address, make sure that any sections it might |
| 588 | mention are initialized. */ |
| 589 | if (s->addr_tree != NULL) |
| 590 | exp_init_os (s->addr_tree); |
| 591 | } |
| 592 | |
| 593 | /* Make sure that all output sections mentioned in an expression are |
| 594 | initialized. */ |
| 595 | |
| 596 | static void |
| 597 | exp_init_os (exp) |
| 598 | etree_type *exp; |
| 599 | { |
| 600 | switch (exp->type.node_class) |
| 601 | { |
| 602 | case etree_assign: |
| 603 | exp_init_os (exp->assign.src); |
| 604 | break; |
| 605 | |
| 606 | case etree_binary: |
| 607 | exp_init_os (exp->binary.lhs); |
| 608 | exp_init_os (exp->binary.rhs); |
| 609 | break; |
| 610 | |
| 611 | case etree_trinary: |
| 612 | exp_init_os (exp->trinary.cond); |
| 613 | exp_init_os (exp->trinary.lhs); |
| 614 | exp_init_os (exp->trinary.rhs); |
| 615 | break; |
| 616 | |
| 617 | case etree_unary: |
| 618 | exp_init_os (exp->unary.child); |
| 619 | break; |
| 620 | |
| 621 | case etree_name: |
| 622 | switch (exp->type.node_code) |
| 623 | { |
| 624 | case ADDR: |
| 625 | case LOADADDR: |
| 626 | case SIZEOF: |
| 627 | { |
| 628 | lang_output_section_statement_type *os; |
| 629 | |
| 630 | os = lang_output_section_find (exp->name.name); |
| 631 | if (os != NULL && os->bfd_section == NULL) |
| 632 | init_os (os); |
| 633 | } |
| 634 | } |
| 635 | break; |
| 636 | |
| 637 | default: |
| 638 | break; |
| 639 | } |
| 640 | } |
| 641 | |
| 642 | /* Sections marked with the SEC_LINK_ONCE flag should only be linked |
| 643 | once into the output. This routine checks each sections, and |
| 644 | arranges to discard it if a section of the same name has already |
| 645 | been linked. This code assumes that all relevant sections have the |
| 646 | SEC_LINK_ONCE flag set; that is, it does not depend solely upon the |
| 647 | section name. This is called via bfd_map_over_sections. */ |
| 648 | |
| 649 | /*ARGSUSED*/ |
| 650 | static void |
| 651 | section_already_linked (abfd, sec, data) |
| 652 | bfd *abfd; |
| 653 | asection *sec; |
| 654 | PTR data; |
| 655 | { |
| 656 | lang_input_statement_type *entry = (lang_input_statement_type *) data; |
| 657 | struct sec_link_once |
| 658 | { |
| 659 | struct sec_link_once *next; |
| 660 | asection *sec; |
| 661 | }; |
| 662 | static struct sec_link_once *sec_link_once_list; |
| 663 | flagword flags; |
| 664 | const char *name; |
| 665 | struct sec_link_once *l; |
| 666 | |
| 667 | /* If we are only reading symbols from this object, then we want to |
| 668 | discard all sections. */ |
| 669 | if (entry->just_syms_flag) |
| 670 | { |
| 671 | sec->output_section = bfd_abs_section_ptr; |
| 672 | sec->output_offset = sec->vma; |
| 673 | return; |
| 674 | } |
| 675 | |
| 676 | flags = bfd_get_section_flags (abfd, sec); |
| 677 | |
| 678 | if ((flags & SEC_LINK_ONCE) == 0) |
| 679 | return; |
| 680 | |
| 681 | name = bfd_get_section_name (abfd, sec); |
| 682 | |
| 683 | for (l = sec_link_once_list; l != NULL; l = l->next) |
| 684 | { |
| 685 | if (strcmp (name, bfd_get_section_name (l->sec->owner, l->sec)) == 0) |
| 686 | { |
| 687 | /* The section has already been linked. See if we should |
| 688 | issue a warning. */ |
| 689 | switch (flags & SEC_LINK_DUPLICATES) |
| 690 | { |
| 691 | default: |
| 692 | abort (); |
| 693 | |
| 694 | case SEC_LINK_DUPLICATES_DISCARD: |
| 695 | break; |
| 696 | |
| 697 | case SEC_LINK_DUPLICATES_ONE_ONLY: |
| 698 | einfo ("%P: %B: warning: ignoring duplicate section `%s'\n", |
| 699 | abfd, name); |
| 700 | break; |
| 701 | |
| 702 | case SEC_LINK_DUPLICATES_SAME_CONTENTS: |
| 703 | /* FIXME: We should really dig out the contents of both |
| 704 | sections and memcmp them. The COFF/PE spec says that |
| 705 | the Microsoft linker does not implement this |
| 706 | correctly, so I'm not going to bother doing it |
| 707 | either. */ |
| 708 | /* Fall through. */ |
| 709 | case SEC_LINK_DUPLICATES_SAME_SIZE: |
| 710 | if (bfd_section_size (abfd, sec) |
| 711 | != bfd_section_size (l->sec->owner, l->sec)) |
| 712 | einfo ("%P: %B: warning: duplicate section `%s' has different size\n", |
| 713 | abfd, name); |
| 714 | break; |
| 715 | } |
| 716 | |
| 717 | /* Set the output_section field so that wild_doit does not |
| 718 | create a lang_input_section structure for this section. */ |
| 719 | sec->output_section = bfd_abs_section_ptr; |
| 720 | |
| 721 | return; |
| 722 | } |
| 723 | } |
| 724 | |
| 725 | /* This is the first section with this name. Record it. */ |
| 726 | |
| 727 | l = (struct sec_link_once *) xmalloc (sizeof *l); |
| 728 | l->sec = sec; |
| 729 | l->next = sec_link_once_list; |
| 730 | sec_link_once_list = l; |
| 731 | } |
| 732 | \f |
| 733 | /* The wild routines. |
| 734 | |
| 735 | These expand statements like *(.text) and foo.o to a list of |
| 736 | explicit actions, like foo.o(.text), bar.o(.text) and |
| 737 | foo.o(.text, .data). */ |
| 738 | |
| 739 | /* Return true if the PATTERN argument is a wildcard pattern. */ |
| 740 | |
| 741 | static boolean |
| 742 | wildcardp (pattern) |
| 743 | const char *pattern; |
| 744 | { |
| 745 | const char *s; |
| 746 | |
| 747 | for (s = pattern; *s != '\0'; ++s) |
| 748 | if (*s == '?' |
| 749 | || *s == '\\' |
| 750 | || *s == '*' |
| 751 | || *s == '[') |
| 752 | return true; |
| 753 | return false; |
| 754 | } |
| 755 | |
| 756 | /* Add SECTION to the output section OUTPUT. Do this by creating a |
| 757 | lang_input_section statement which is placed at PTR. FILE is the |
| 758 | input file which holds SECTION. */ |
| 759 | |
| 760 | void |
| 761 | wild_doit (ptr, section, output, file) |
| 762 | lang_statement_list_type *ptr; |
| 763 | asection *section; |
| 764 | lang_output_section_statement_type *output; |
| 765 | lang_input_statement_type *file; |
| 766 | { |
| 767 | flagword flags; |
| 768 | boolean discard; |
| 769 | |
| 770 | flags = bfd_get_section_flags (section->owner, section); |
| 771 | |
| 772 | discard = false; |
| 773 | |
| 774 | /* If we are doing a final link, discard sections marked with |
| 775 | SEC_EXCLUDE. */ |
| 776 | if (! link_info.relocateable |
| 777 | && (flags & SEC_EXCLUDE) != 0) |
| 778 | discard = true; |
| 779 | |
| 780 | /* Discard input sections which are assigned to a section named |
| 781 | DISCARD_SECTION_NAME. */ |
| 782 | if (strcmp (output->name, DISCARD_SECTION_NAME) == 0) |
| 783 | discard = true; |
| 784 | |
| 785 | /* Discard debugging sections if we are stripping debugging |
| 786 | information. */ |
| 787 | if ((link_info.strip == strip_debugger || link_info.strip == strip_all) |
| 788 | && (flags & SEC_DEBUGGING) != 0) |
| 789 | discard = true; |
| 790 | |
| 791 | if (discard) |
| 792 | { |
| 793 | if (section->output_section == NULL) |
| 794 | { |
| 795 | /* This prevents future calls from assigning this section. */ |
| 796 | section->output_section = bfd_abs_section_ptr; |
| 797 | } |
| 798 | return; |
| 799 | } |
| 800 | |
| 801 | if (section->output_section == NULL) |
| 802 | { |
| 803 | lang_input_section_type *new; |
| 804 | |
| 805 | if (output->bfd_section == NULL) |
| 806 | init_os (output); |
| 807 | |
| 808 | /* Add a section reference to the list */ |
| 809 | new = new_stat (lang_input_section, ptr); |
| 810 | |
| 811 | new->section = section; |
| 812 | new->ifile = file; |
| 813 | section->output_section = output->bfd_section; |
| 814 | |
| 815 | /* We don't copy the SEC_NEVER_LOAD flag from an input section |
| 816 | to an output section, because we want to be able to include a |
| 817 | SEC_NEVER_LOAD section in the middle of an otherwise loaded |
| 818 | section (I don't know why we want to do this, but we do). |
| 819 | build_link_order in ldwrite.c handles this case by turning |
| 820 | the embedded SEC_NEVER_LOAD section into a fill. |
| 821 | |
| 822 | If final link, don't copy the SEC_LINK_ONCE flags, they've already |
| 823 | been processed. One reason to do this is that on pe format targets, |
| 824 | .text$foo sections go into .text and it's odd to see .text with |
| 825 | SEC_LINK_ONCE set. */ |
| 826 | |
| 827 | section->output_section->flags |= |
| 828 | section->flags & (flagword) (~ (SEC_NEVER_LOAD |
| 829 | | (! link_info.relocateable |
| 830 | ? SEC_LINK_ONCE | SEC_LINK_DUPLICATES |
| 831 | : 0))); |
| 832 | |
| 833 | switch (output->sectype) |
| 834 | { |
| 835 | case normal_section: |
| 836 | break; |
| 837 | case dsect_section: |
| 838 | case copy_section: |
| 839 | case info_section: |
| 840 | case overlay_section: |
| 841 | output->bfd_section->flags &= ~SEC_ALLOC; |
| 842 | break; |
| 843 | case noload_section: |
| 844 | output->bfd_section->flags &= ~SEC_LOAD; |
| 845 | output->bfd_section->flags |= SEC_NEVER_LOAD; |
| 846 | break; |
| 847 | } |
| 848 | |
| 849 | if (section->alignment_power > output->bfd_section->alignment_power) |
| 850 | output->bfd_section->alignment_power = section->alignment_power; |
| 851 | |
| 852 | /* If supplied an aligment, then force it. */ |
| 853 | if (output->section_alignment != -1) |
| 854 | output->bfd_section->alignment_power = output->section_alignment; |
| 855 | } |
| 856 | } |
| 857 | |
| 858 | /* Expand a wild statement for a particular FILE. SECTION may be |
| 859 | NULL, in which case it is a wild card. */ |
| 860 | |
| 861 | static void |
| 862 | wild_section (ptr, section, file, output) |
| 863 | lang_wild_statement_type *ptr; |
| 864 | const char *section; |
| 865 | lang_input_statement_type *file; |
| 866 | lang_output_section_statement_type *output; |
| 867 | { |
| 868 | if (file->just_syms_flag == false) |
| 869 | { |
| 870 | register asection *s; |
| 871 | boolean wildcard; |
| 872 | |
| 873 | if (section == NULL) |
| 874 | wildcard = false; |
| 875 | else |
| 876 | wildcard = wildcardp (section); |
| 877 | |
| 878 | for (s = file->the_bfd->sections; s != NULL; s = s->next) |
| 879 | { |
| 880 | boolean match; |
| 881 | |
| 882 | /* Attach all sections named SECTION. If SECTION is NULL, |
| 883 | then attach all sections. |
| 884 | |
| 885 | Previously, if SECTION was NULL, this code did not call |
| 886 | wild_doit if the SEC_IS_COMMON flag was set for the |
| 887 | section. I did not understand that, and I took it out. |
| 888 | --ian@cygnus.com. */ |
| 889 | |
| 890 | if (section == NULL) |
| 891 | match = true; |
| 892 | else |
| 893 | { |
| 894 | const char *name; |
| 895 | |
| 896 | name = bfd_get_section_name (file->the_bfd, s); |
| 897 | if (wildcard) |
| 898 | match = fnmatch (section, name, 0) == 0 ? true : false; |
| 899 | else |
| 900 | match = strcmp (section, name) == 0 ? true : false; |
| 901 | } |
| 902 | if (match) |
| 903 | wild_doit (&ptr->children, s, output, file); |
| 904 | } |
| 905 | } |
| 906 | } |
| 907 | |
| 908 | /* This is passed a file name which must have been seen already and |
| 909 | added to the statement tree. We will see if it has been opened |
| 910 | already and had its symbols read. If not then we'll read it. */ |
| 911 | |
| 912 | static lang_input_statement_type * |
| 913 | lookup_name (name) |
| 914 | const char *name; |
| 915 | { |
| 916 | lang_input_statement_type *search; |
| 917 | |
| 918 | for (search = (lang_input_statement_type *) input_file_chain.head; |
| 919 | search != (lang_input_statement_type *) NULL; |
| 920 | search = (lang_input_statement_type *) search->next_real_file) |
| 921 | { |
| 922 | if (search->filename == (char *) NULL && name == (char *) NULL) |
| 923 | return search; |
| 924 | if (search->filename != (char *) NULL |
| 925 | && name != (char *) NULL |
| 926 | && strcmp (search->filename, name) == 0) |
| 927 | break; |
| 928 | } |
| 929 | |
| 930 | if (search == (lang_input_statement_type *) NULL) |
| 931 | search = new_afile (name, lang_input_file_is_file_enum, default_target, |
| 932 | false); |
| 933 | |
| 934 | /* If we have already added this file, or this file is not real |
| 935 | (FIXME: can that ever actually happen?) or the name is NULL |
| 936 | (FIXME: can that ever actually happen?) don't add this file. */ |
| 937 | if (search->loaded |
| 938 | || ! search->real |
| 939 | || search->filename == (const char *) NULL) |
| 940 | return search; |
| 941 | |
| 942 | load_symbols (search, (lang_statement_list_type *) NULL); |
| 943 | |
| 944 | return search; |
| 945 | } |
| 946 | |
| 947 | /* Get the symbols for an input file. */ |
| 948 | |
| 949 | static void |
| 950 | load_symbols (entry, place) |
| 951 | lang_input_statement_type *entry; |
| 952 | lang_statement_list_type *place; |
| 953 | { |
| 954 | char **matching; |
| 955 | |
| 956 | if (entry->loaded) |
| 957 | return; |
| 958 | |
| 959 | ldfile_open_file (entry); |
| 960 | |
| 961 | if (! bfd_check_format (entry->the_bfd, bfd_archive) |
| 962 | && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching)) |
| 963 | { |
| 964 | bfd_error_type err; |
| 965 | lang_statement_list_type *hold; |
| 966 | |
| 967 | err = bfd_get_error (); |
| 968 | if (err == bfd_error_file_ambiguously_recognized) |
| 969 | { |
| 970 | char **p; |
| 971 | |
| 972 | einfo ("%B: file not recognized: %E\n", entry->the_bfd); |
| 973 | einfo ("%B: matching formats:", entry->the_bfd); |
| 974 | for (p = matching; *p != NULL; p++) |
| 975 | einfo (" %s", *p); |
| 976 | einfo ("%F\n"); |
| 977 | } |
| 978 | else if (err != bfd_error_file_not_recognized |
| 979 | || place == NULL) |
| 980 | einfo ("%F%B: file not recognized: %E\n", entry->the_bfd); |
| 981 | |
| 982 | bfd_close (entry->the_bfd); |
| 983 | entry->the_bfd = NULL; |
| 984 | |
| 985 | /* See if the emulation has some special knowledge. */ |
| 986 | |
| 987 | if (ldemul_unrecognized_file (entry)) |
| 988 | return; |
| 989 | |
| 990 | /* Try to interpret the file as a linker script. */ |
| 991 | |
| 992 | ldfile_open_command_file (entry->filename); |
| 993 | |
| 994 | hold = stat_ptr; |
| 995 | stat_ptr = place; |
| 996 | |
| 997 | ldfile_assumed_script = true; |
| 998 | parser_input = input_script; |
| 999 | yyparse (); |
| 1000 | ldfile_assumed_script = false; |
| 1001 | |
| 1002 | stat_ptr = hold; |
| 1003 | |
| 1004 | return; |
| 1005 | } |
| 1006 | |
| 1007 | /* We don't call ldlang_add_file for an archive. Instead, the |
| 1008 | add_symbols entry point will call ldlang_add_file, via the |
| 1009 | add_archive_element callback, for each element of the archive |
| 1010 | which is used. */ |
| 1011 | switch (bfd_get_format (entry->the_bfd)) |
| 1012 | { |
| 1013 | default: |
| 1014 | break; |
| 1015 | |
| 1016 | case bfd_object: |
| 1017 | ldlang_add_file (entry); |
| 1018 | if (trace_files || trace_file_tries) |
| 1019 | info_msg ("%I\n", entry); |
| 1020 | break; |
| 1021 | |
| 1022 | case bfd_archive: |
| 1023 | if (entry->whole_archive) |
| 1024 | { |
| 1025 | bfd *member = bfd_openr_next_archived_file (entry->the_bfd, |
| 1026 | (bfd *) NULL); |
| 1027 | while (member != NULL) |
| 1028 | { |
| 1029 | if (! bfd_check_format (member, bfd_object)) |
| 1030 | einfo ("%F%B: object %B in archive is not object\n", |
| 1031 | entry->the_bfd, member); |
| 1032 | if (! ((*link_info.callbacks->add_archive_element) |
| 1033 | (&link_info, member, "--whole-archive"))) |
| 1034 | abort (); |
| 1035 | if (! bfd_link_add_symbols (member, &link_info)) |
| 1036 | einfo ("%F%B: could not read symbols: %E\n", member); |
| 1037 | member = bfd_openr_next_archived_file (entry->the_bfd, |
| 1038 | member); |
| 1039 | } |
| 1040 | |
| 1041 | entry->loaded = true; |
| 1042 | |
| 1043 | return; |
| 1044 | } |
| 1045 | } |
| 1046 | |
| 1047 | if (! bfd_link_add_symbols (entry->the_bfd, &link_info)) |
| 1048 | einfo ("%F%B: could not read symbols: %E\n", entry->the_bfd); |
| 1049 | |
| 1050 | entry->loaded = true; |
| 1051 | } |
| 1052 | |
| 1053 | /* Handle a wild statement for a single file F. */ |
| 1054 | |
| 1055 | static void |
| 1056 | wild_file (s, section, f, output) |
| 1057 | lang_wild_statement_type *s; |
| 1058 | const char *section; |
| 1059 | lang_input_statement_type *f; |
| 1060 | lang_output_section_statement_type *output; |
| 1061 | { |
| 1062 | if (f->the_bfd == NULL |
| 1063 | || ! bfd_check_format (f->the_bfd, bfd_archive)) |
| 1064 | wild_section (s, section, f, output); |
| 1065 | else |
| 1066 | { |
| 1067 | bfd *member; |
| 1068 | |
| 1069 | /* This is an archive file. We must map each member of the |
| 1070 | archive separately. */ |
| 1071 | member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL); |
| 1072 | while (member != NULL) |
| 1073 | { |
| 1074 | /* When lookup_name is called, it will call the add_symbols |
| 1075 | entry point for the archive. For each element of the |
| 1076 | archive which is included, BFD will call ldlang_add_file, |
| 1077 | which will set the usrdata field of the member to the |
| 1078 | lang_input_statement. */ |
| 1079 | if (member->usrdata != NULL) |
| 1080 | { |
| 1081 | wild_section (s, section, |
| 1082 | (lang_input_statement_type *) member->usrdata, |
| 1083 | output); |
| 1084 | } |
| 1085 | |
| 1086 | member = bfd_openr_next_archived_file (f->the_bfd, member); |
| 1087 | } |
| 1088 | } |
| 1089 | } |
| 1090 | |
| 1091 | /* Handle a wild statement. SECTION or FILE or both may be NULL, |
| 1092 | indicating that it is a wildcard. Separate lang_input_section |
| 1093 | statements are created for each part of the expansion; they are |
| 1094 | added after the wild statement S. OUTPUT is the output section. */ |
| 1095 | |
| 1096 | static void |
| 1097 | wild (s, section, file, target, output) |
| 1098 | lang_wild_statement_type *s; |
| 1099 | const char *section; |
| 1100 | const char *file; |
| 1101 | const char *target; |
| 1102 | lang_output_section_statement_type *output; |
| 1103 | { |
| 1104 | lang_input_statement_type *f; |
| 1105 | |
| 1106 | if (file == (char *) NULL) |
| 1107 | { |
| 1108 | /* Perform the iteration over all files in the list */ |
| 1109 | for (f = (lang_input_statement_type *) file_chain.head; |
| 1110 | f != (lang_input_statement_type *) NULL; |
| 1111 | f = (lang_input_statement_type *) f->next) |
| 1112 | { |
| 1113 | wild_file (s, section, f, output); |
| 1114 | } |
| 1115 | } |
| 1116 | else if (wildcardp (file)) |
| 1117 | { |
| 1118 | for (f = (lang_input_statement_type *) file_chain.head; |
| 1119 | f != (lang_input_statement_type *) NULL; |
| 1120 | f = (lang_input_statement_type *) f->next) |
| 1121 | { |
| 1122 | if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0) |
| 1123 | wild_file (s, section, f, output); |
| 1124 | } |
| 1125 | } |
| 1126 | else |
| 1127 | { |
| 1128 | /* Perform the iteration over a single file */ |
| 1129 | f = lookup_name (file); |
| 1130 | wild_file (s, section, f, output); |
| 1131 | } |
| 1132 | |
| 1133 | if (section != (char *) NULL |
| 1134 | && strcmp (section, "COMMON") == 0 |
| 1135 | && default_common_section == NULL) |
| 1136 | { |
| 1137 | /* Remember the section that common is going to in case we later |
| 1138 | get something which doesn't know where to put it. */ |
| 1139 | default_common_section = output; |
| 1140 | } |
| 1141 | } |
| 1142 | |
| 1143 | /* Open the output file. */ |
| 1144 | |
| 1145 | static bfd * |
| 1146 | open_output (name) |
| 1147 | const char *name; |
| 1148 | { |
| 1149 | bfd *output; |
| 1150 | |
| 1151 | if (output_target == (char *) NULL) |
| 1152 | { |
| 1153 | if (current_target != (char *) NULL) |
| 1154 | output_target = current_target; |
| 1155 | else |
| 1156 | output_target = default_target; |
| 1157 | } |
| 1158 | output = bfd_openw (name, output_target); |
| 1159 | |
| 1160 | if (output == (bfd *) NULL) |
| 1161 | { |
| 1162 | if (bfd_get_error () == bfd_error_invalid_target) |
| 1163 | { |
| 1164 | einfo ("%P%F: target %s not found\n", output_target); |
| 1165 | } |
| 1166 | einfo ("%P%F: cannot open output file %s: %E\n", name); |
| 1167 | } |
| 1168 | |
| 1169 | delete_output_file_on_failure = true; |
| 1170 | |
| 1171 | /* output->flags |= D_PAGED;*/ |
| 1172 | |
| 1173 | if (! bfd_set_format (output, bfd_object)) |
| 1174 | einfo ("%P%F:%s: can not make object file: %E\n", name); |
| 1175 | if (! bfd_set_arch_mach (output, |
| 1176 | ldfile_output_architecture, |
| 1177 | ldfile_output_machine)) |
| 1178 | einfo ("%P%F:%s: can not set architecture: %E\n", name); |
| 1179 | |
| 1180 | link_info.hash = bfd_link_hash_table_create (output); |
| 1181 | if (link_info.hash == (struct bfd_link_hash_table *) NULL) |
| 1182 | einfo ("%P%F: can not create link hash table: %E\n"); |
| 1183 | |
| 1184 | bfd_set_gp_size (output, g_switch_value); |
| 1185 | return output; |
| 1186 | } |
| 1187 | |
| 1188 | |
| 1189 | |
| 1190 | |
| 1191 | static void |
| 1192 | ldlang_open_output (statement) |
| 1193 | lang_statement_union_type * statement; |
| 1194 | { |
| 1195 | switch (statement->header.type) |
| 1196 | { |
| 1197 | case lang_output_statement_enum: |
| 1198 | ASSERT (output_bfd == (bfd *) NULL); |
| 1199 | output_bfd = open_output (statement->output_statement.name); |
| 1200 | ldemul_set_output_arch (); |
| 1201 | if (config.magic_demand_paged && !link_info.relocateable) |
| 1202 | output_bfd->flags |= D_PAGED; |
| 1203 | else |
| 1204 | output_bfd->flags &= ~D_PAGED; |
| 1205 | if (config.text_read_only) |
| 1206 | output_bfd->flags |= WP_TEXT; |
| 1207 | else |
| 1208 | output_bfd->flags &= ~WP_TEXT; |
| 1209 | if (link_info.traditional_format) |
| 1210 | output_bfd->flags |= BFD_TRADITIONAL_FORMAT; |
| 1211 | else |
| 1212 | output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT; |
| 1213 | break; |
| 1214 | |
| 1215 | case lang_target_statement_enum: |
| 1216 | current_target = statement->target_statement.target; |
| 1217 | break; |
| 1218 | default: |
| 1219 | break; |
| 1220 | } |
| 1221 | } |
| 1222 | |
| 1223 | /* Open all the input files. */ |
| 1224 | |
| 1225 | static void |
| 1226 | open_input_bfds (s, force) |
| 1227 | lang_statement_union_type *s; |
| 1228 | boolean force; |
| 1229 | { |
| 1230 | for (; s != (lang_statement_union_type *) NULL; s = s->next) |
| 1231 | { |
| 1232 | switch (s->header.type) |
| 1233 | { |
| 1234 | case lang_constructors_statement_enum: |
| 1235 | open_input_bfds (constructor_list.head, force); |
| 1236 | break; |
| 1237 | case lang_output_section_statement_enum: |
| 1238 | open_input_bfds (s->output_section_statement.children.head, force); |
| 1239 | break; |
| 1240 | case lang_wild_statement_enum: |
| 1241 | /* Maybe we should load the file's symbols */ |
| 1242 | if (s->wild_statement.filename |
| 1243 | && ! wildcardp (s->wild_statement.filename)) |
| 1244 | (void) lookup_name (s->wild_statement.filename); |
| 1245 | open_input_bfds (s->wild_statement.children.head, force); |
| 1246 | break; |
| 1247 | case lang_group_statement_enum: |
| 1248 | { |
| 1249 | struct bfd_link_hash_entry *undefs; |
| 1250 | |
| 1251 | /* We must continually search the entries in the group |
| 1252 | until no new symbols are added to the list of undefined |
| 1253 | symbols. */ |
| 1254 | |
| 1255 | do |
| 1256 | { |
| 1257 | undefs = link_info.hash->undefs_tail; |
| 1258 | open_input_bfds (s->group_statement.children.head, true); |
| 1259 | } |
| 1260 | while (undefs != link_info.hash->undefs_tail); |
| 1261 | } |
| 1262 | break; |
| 1263 | case lang_target_statement_enum: |
| 1264 | current_target = s->target_statement.target; |
| 1265 | break; |
| 1266 | case lang_input_statement_enum: |
| 1267 | if (s->input_statement.real == true) |
| 1268 | { |
| 1269 | lang_statement_list_type add; |
| 1270 | |
| 1271 | s->input_statement.target = current_target; |
| 1272 | |
| 1273 | /* If we are being called from within a group, and this |
| 1274 | is an archive which has already been searched, then |
| 1275 | force it to be researched. */ |
| 1276 | if (force |
| 1277 | && s->input_statement.loaded |
| 1278 | && bfd_check_format (s->input_statement.the_bfd, |
| 1279 | bfd_archive)) |
| 1280 | s->input_statement.loaded = false; |
| 1281 | |
| 1282 | lang_list_init (&add); |
| 1283 | |
| 1284 | load_symbols (&s->input_statement, &add); |
| 1285 | |
| 1286 | if (add.head != NULL) |
| 1287 | { |
| 1288 | *add.tail = s->next; |
| 1289 | s->next = add.head; |
| 1290 | } |
| 1291 | } |
| 1292 | break; |
| 1293 | default: |
| 1294 | break; |
| 1295 | } |
| 1296 | } |
| 1297 | } |
| 1298 | |
| 1299 | /* If there are [COMMONS] statements, put a wild one into the bss section */ |
| 1300 | |
| 1301 | static void |
| 1302 | lang_reasonable_defaults () |
| 1303 | { |
| 1304 | #if 0 |
| 1305 | lang_output_section_statement_lookup (".text"); |
| 1306 | lang_output_section_statement_lookup (".data"); |
| 1307 | |
| 1308 | default_common_section = |
| 1309 | lang_output_section_statement_lookup (".bss"); |
| 1310 | |
| 1311 | |
| 1312 | if (placed_commons == false) |
| 1313 | { |
| 1314 | lang_wild_statement_type *new = |
| 1315 | new_stat (lang_wild_statement, |
| 1316 | &default_common_section->children); |
| 1317 | |
| 1318 | new->section_name = "COMMON"; |
| 1319 | new->filename = (char *) NULL; |
| 1320 | lang_list_init (&new->children); |
| 1321 | } |
| 1322 | #endif |
| 1323 | |
| 1324 | } |
| 1325 | |
| 1326 | /* |
| 1327 | Add the supplied name to the symbol table as an undefined reference. |
| 1328 | Remove items from the chain as we open input bfds |
| 1329 | */ |
| 1330 | typedef struct ldlang_undef_chain_list |
| 1331 | { |
| 1332 | struct ldlang_undef_chain_list *next; |
| 1333 | char *name; |
| 1334 | } ldlang_undef_chain_list_type; |
| 1335 | |
| 1336 | static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head; |
| 1337 | |
| 1338 | void |
| 1339 | ldlang_add_undef (name) |
| 1340 | CONST char *CONST name; |
| 1341 | { |
| 1342 | ldlang_undef_chain_list_type *new = |
| 1343 | ((ldlang_undef_chain_list_type *) |
| 1344 | stat_alloc (sizeof (ldlang_undef_chain_list_type))); |
| 1345 | |
| 1346 | new->next = ldlang_undef_chain_list_head; |
| 1347 | ldlang_undef_chain_list_head = new; |
| 1348 | |
| 1349 | new->name = buystring (name); |
| 1350 | } |
| 1351 | |
| 1352 | /* Run through the list of undefineds created above and place them |
| 1353 | into the linker hash table as undefined symbols belonging to the |
| 1354 | script file. |
| 1355 | */ |
| 1356 | static void |
| 1357 | lang_place_undefineds () |
| 1358 | { |
| 1359 | ldlang_undef_chain_list_type *ptr; |
| 1360 | |
| 1361 | for (ptr = ldlang_undef_chain_list_head; |
| 1362 | ptr != (ldlang_undef_chain_list_type *) NULL; |
| 1363 | ptr = ptr->next) |
| 1364 | { |
| 1365 | struct bfd_link_hash_entry *h; |
| 1366 | |
| 1367 | h = bfd_link_hash_lookup (link_info.hash, ptr->name, true, false, true); |
| 1368 | if (h == (struct bfd_link_hash_entry *) NULL) |
| 1369 | einfo ("%P%F: bfd_link_hash_lookup failed: %E"); |
| 1370 | if (h->type == bfd_link_hash_new) |
| 1371 | { |
| 1372 | h->type = bfd_link_hash_undefined; |
| 1373 | h->u.undef.abfd = NULL; |
| 1374 | bfd_link_add_undef (link_info.hash, h); |
| 1375 | } |
| 1376 | } |
| 1377 | } |
| 1378 | |
| 1379 | /* Open input files and attatch to output sections */ |
| 1380 | static void |
| 1381 | map_input_to_output_sections (s, target, output_section_statement) |
| 1382 | lang_statement_union_type * s; |
| 1383 | CONST char *target; |
| 1384 | lang_output_section_statement_type * output_section_statement; |
| 1385 | { |
| 1386 | for (; s != (lang_statement_union_type *) NULL; s = s->next) |
| 1387 | { |
| 1388 | switch (s->header.type) |
| 1389 | { |
| 1390 | |
| 1391 | |
| 1392 | case lang_wild_statement_enum: |
| 1393 | wild (&s->wild_statement, s->wild_statement.section_name, |
| 1394 | s->wild_statement.filename, target, |
| 1395 | output_section_statement); |
| 1396 | |
| 1397 | break; |
| 1398 | case lang_constructors_statement_enum: |
| 1399 | map_input_to_output_sections (constructor_list.head, |
| 1400 | target, |
| 1401 | output_section_statement); |
| 1402 | break; |
| 1403 | case lang_output_section_statement_enum: |
| 1404 | map_input_to_output_sections (s->output_section_statement.children.head, |
| 1405 | target, |
| 1406 | &s->output_section_statement); |
| 1407 | break; |
| 1408 | case lang_output_statement_enum: |
| 1409 | break; |
| 1410 | case lang_target_statement_enum: |
| 1411 | target = s->target_statement.target; |
| 1412 | break; |
| 1413 | case lang_group_statement_enum: |
| 1414 | map_input_to_output_sections (s->group_statement.children.head, |
| 1415 | target, |
| 1416 | output_section_statement); |
| 1417 | break; |
| 1418 | case lang_fill_statement_enum: |
| 1419 | case lang_input_section_enum: |
| 1420 | case lang_object_symbols_statement_enum: |
| 1421 | case lang_data_statement_enum: |
| 1422 | case lang_reloc_statement_enum: |
| 1423 | case lang_padding_statement_enum: |
| 1424 | case lang_input_statement_enum: |
| 1425 | if (output_section_statement != NULL |
| 1426 | && output_section_statement->bfd_section == NULL) |
| 1427 | init_os (output_section_statement); |
| 1428 | break; |
| 1429 | case lang_assignment_statement_enum: |
| 1430 | if (output_section_statement != NULL |
| 1431 | && output_section_statement->bfd_section == NULL) |
| 1432 | init_os (output_section_statement); |
| 1433 | |
| 1434 | /* Make sure that any sections mentioned in the assignment |
| 1435 | are initialized. */ |
| 1436 | exp_init_os (s->assignment_statement.exp); |
| 1437 | break; |
| 1438 | case lang_afile_asection_pair_statement_enum: |
| 1439 | FAIL (); |
| 1440 | break; |
| 1441 | case lang_address_statement_enum: |
| 1442 | /* Mark the specified section with the supplied address */ |
| 1443 | { |
| 1444 | lang_output_section_statement_type *os = |
| 1445 | lang_output_section_statement_lookup |
| 1446 | (s->address_statement.section_name); |
| 1447 | |
| 1448 | if (os->bfd_section == NULL) |
| 1449 | init_os (os); |
| 1450 | os->addr_tree = s->address_statement.address; |
| 1451 | } |
| 1452 | break; |
| 1453 | } |
| 1454 | } |
| 1455 | } |
| 1456 | |
| 1457 | static void |
| 1458 | print_output_section_statement (output_section_statement) |
| 1459 | lang_output_section_statement_type * output_section_statement; |
| 1460 | { |
| 1461 | asection *section = output_section_statement->bfd_section; |
| 1462 | int len; |
| 1463 | |
| 1464 | if (output_section_statement != abs_output_section) |
| 1465 | { |
| 1466 | minfo ("\n%s", output_section_statement->name); |
| 1467 | |
| 1468 | if (section != NULL) |
| 1469 | { |
| 1470 | print_dot = section->vma; |
| 1471 | |
| 1472 | len = strlen (output_section_statement->name); |
| 1473 | if (len >= SECTION_NAME_MAP_LENGTH - 1) |
| 1474 | { |
| 1475 | print_nl (); |
| 1476 | len = 0; |
| 1477 | } |
| 1478 | while (len < SECTION_NAME_MAP_LENGTH) |
| 1479 | { |
| 1480 | print_space (); |
| 1481 | ++len; |
| 1482 | } |
| 1483 | |
| 1484 | minfo ("0x%V %W", section->vma, section->_raw_size); |
| 1485 | |
| 1486 | if (output_section_statement->load_base != NULL) |
| 1487 | { |
| 1488 | bfd_vma addr; |
| 1489 | |
| 1490 | addr = exp_get_abs_int (output_section_statement->load_base, 0, |
| 1491 | "load base", lang_final_phase_enum); |
| 1492 | minfo (" load address 0x%V", addr); |
| 1493 | } |
| 1494 | } |
| 1495 | |
| 1496 | print_nl (); |
| 1497 | } |
| 1498 | |
| 1499 | print_statement_list (output_section_statement->children.head, |
| 1500 | output_section_statement); |
| 1501 | } |
| 1502 | |
| 1503 | static void |
| 1504 | print_assignment (assignment, output_section) |
| 1505 | lang_assignment_statement_type * assignment; |
| 1506 | lang_output_section_statement_type * output_section; |
| 1507 | { |
| 1508 | int i; |
| 1509 | etree_value_type result; |
| 1510 | |
| 1511 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
| 1512 | print_space (); |
| 1513 | |
| 1514 | result = exp_fold_tree (assignment->exp->assign.src, output_section, |
| 1515 | lang_final_phase_enum, print_dot, &print_dot); |
| 1516 | if (result.valid) |
| 1517 | minfo ("0x%V", result.value + result.section->bfd_section->vma); |
| 1518 | else |
| 1519 | { |
| 1520 | minfo ("*undef* "); |
| 1521 | #ifdef BFD64 |
| 1522 | minfo (" "); |
| 1523 | #endif |
| 1524 | } |
| 1525 | |
| 1526 | minfo (" "); |
| 1527 | |
| 1528 | exp_print_tree (assignment->exp); |
| 1529 | |
| 1530 | print_nl (); |
| 1531 | } |
| 1532 | |
| 1533 | static void |
| 1534 | print_input_statement (statm) |
| 1535 | lang_input_statement_type * statm; |
| 1536 | { |
| 1537 | if (statm->filename != (char *) NULL) |
| 1538 | { |
| 1539 | fprintf (config.map_file, "LOAD %s\n", statm->filename); |
| 1540 | } |
| 1541 | } |
| 1542 | |
| 1543 | /* Print all symbols defined in a particular section. This is called |
| 1544 | via bfd_link_hash_traverse. */ |
| 1545 | |
| 1546 | static boolean |
| 1547 | print_one_symbol (hash_entry, ptr) |
| 1548 | struct bfd_link_hash_entry *hash_entry; |
| 1549 | PTR ptr; |
| 1550 | { |
| 1551 | asection *sec = (asection *) ptr; |
| 1552 | |
| 1553 | if ((hash_entry->type == bfd_link_hash_defined |
| 1554 | || hash_entry->type == bfd_link_hash_defweak) |
| 1555 | && sec == hash_entry->u.def.section) |
| 1556 | { |
| 1557 | int i; |
| 1558 | |
| 1559 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
| 1560 | print_space (); |
| 1561 | minfo ("0x%V ", |
| 1562 | (hash_entry->u.def.value |
| 1563 | + hash_entry->u.def.section->output_offset |
| 1564 | + hash_entry->u.def.section->output_section->vma)); |
| 1565 | |
| 1566 | minfo (" %T\n", hash_entry->root.string); |
| 1567 | } |
| 1568 | |
| 1569 | return true; |
| 1570 | } |
| 1571 | |
| 1572 | /* Print information about an input section to the map file. */ |
| 1573 | |
| 1574 | static void |
| 1575 | print_input_section (in) |
| 1576 | lang_input_section_type * in; |
| 1577 | { |
| 1578 | asection *i = in->section; |
| 1579 | bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size; |
| 1580 | |
| 1581 | if (size != 0) |
| 1582 | { |
| 1583 | print_space (); |
| 1584 | |
| 1585 | minfo ("%s", i->name); |
| 1586 | |
| 1587 | if (i->output_section != NULL) |
| 1588 | { |
| 1589 | int len; |
| 1590 | |
| 1591 | len = 1 + strlen (i->name); |
| 1592 | if (len >= SECTION_NAME_MAP_LENGTH - 1) |
| 1593 | { |
| 1594 | print_nl (); |
| 1595 | len = 0; |
| 1596 | } |
| 1597 | while (len < SECTION_NAME_MAP_LENGTH) |
| 1598 | { |
| 1599 | print_space (); |
| 1600 | ++len; |
| 1601 | } |
| 1602 | |
| 1603 | minfo ("0x%V %W %B\n", |
| 1604 | i->output_section->vma + i->output_offset, size, |
| 1605 | i->owner); |
| 1606 | |
| 1607 | if (i->_cooked_size != 0 && i->_cooked_size != i->_raw_size) |
| 1608 | { |
| 1609 | len = SECTION_NAME_MAP_LENGTH + 3; |
| 1610 | #ifdef BFD64 |
| 1611 | len += 16; |
| 1612 | #else |
| 1613 | len += 8; |
| 1614 | #endif |
| 1615 | while (len > 0) |
| 1616 | { |
| 1617 | print_space (); |
| 1618 | --len; |
| 1619 | } |
| 1620 | |
| 1621 | minfo ("%W (size before relaxing)\n", i->_raw_size); |
| 1622 | } |
| 1623 | |
| 1624 | bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i); |
| 1625 | |
| 1626 | print_dot = i->output_section->vma + i->output_offset + size; |
| 1627 | } |
| 1628 | } |
| 1629 | } |
| 1630 | |
| 1631 | static void |
| 1632 | print_fill_statement (fill) |
| 1633 | lang_fill_statement_type * fill; |
| 1634 | { |
| 1635 | fprintf (config.map_file, " FILL mask 0x%x\n", fill->fill); |
| 1636 | } |
| 1637 | |
| 1638 | static void |
| 1639 | print_data_statement (data) |
| 1640 | lang_data_statement_type * data; |
| 1641 | { |
| 1642 | int i; |
| 1643 | bfd_vma addr; |
| 1644 | bfd_size_type size; |
| 1645 | const char *name; |
| 1646 | |
| 1647 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
| 1648 | print_space (); |
| 1649 | |
| 1650 | addr = data->output_vma; |
| 1651 | if (data->output_section != NULL) |
| 1652 | addr += data->output_section->vma; |
| 1653 | |
| 1654 | switch (data->type) |
| 1655 | { |
| 1656 | default: |
| 1657 | abort (); |
| 1658 | case BYTE: |
| 1659 | size = BYTE_SIZE; |
| 1660 | name = "BYTE"; |
| 1661 | break; |
| 1662 | case SHORT: |
| 1663 | size = SHORT_SIZE; |
| 1664 | name = "SHORT"; |
| 1665 | break; |
| 1666 | case LONG: |
| 1667 | size = LONG_SIZE; |
| 1668 | name = "LONG"; |
| 1669 | break; |
| 1670 | case QUAD: |
| 1671 | size = QUAD_SIZE; |
| 1672 | name = "QUAD"; |
| 1673 | break; |
| 1674 | } |
| 1675 | |
| 1676 | minfo ("0x%V %W %s 0x%v", addr, size, name, data->value); |
| 1677 | |
| 1678 | if (data->exp->type.node_class != etree_value) |
| 1679 | { |
| 1680 | print_space (); |
| 1681 | exp_print_tree (data->exp); |
| 1682 | } |
| 1683 | |
| 1684 | print_nl (); |
| 1685 | |
| 1686 | print_dot = addr + size; |
| 1687 | } |
| 1688 | |
| 1689 | /* Print an address statement. These are generated by options like |
| 1690 | -Ttext. */ |
| 1691 | |
| 1692 | static void |
| 1693 | print_address_statement (address) |
| 1694 | lang_address_statement_type *address; |
| 1695 | { |
| 1696 | minfo ("Address of section %s set to ", address->section_name); |
| 1697 | exp_print_tree (address->address); |
| 1698 | print_nl (); |
| 1699 | } |
| 1700 | |
| 1701 | /* Print a reloc statement. */ |
| 1702 | |
| 1703 | static void |
| 1704 | print_reloc_statement (reloc) |
| 1705 | lang_reloc_statement_type *reloc; |
| 1706 | { |
| 1707 | int i; |
| 1708 | bfd_vma addr; |
| 1709 | bfd_size_type size; |
| 1710 | |
| 1711 | for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) |
| 1712 | print_space (); |
| 1713 | |
| 1714 | addr = reloc->output_vma; |
| 1715 | if (reloc->output_section != NULL) |
| 1716 | addr += reloc->output_section->vma; |
| 1717 | |
| 1718 | size = bfd_get_reloc_size (reloc->howto); |
| 1719 | |
| 1720 | minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name); |
| 1721 | |
| 1722 | if (reloc->name != NULL) |
| 1723 | minfo ("%s+", reloc->name); |
| 1724 | else |
| 1725 | minfo ("%s+", reloc->section->name); |
| 1726 | |
| 1727 | exp_print_tree (reloc->addend_exp); |
| 1728 | |
| 1729 | print_nl (); |
| 1730 | |
| 1731 | print_dot = addr + size; |
| 1732 | } |
| 1733 | |
| 1734 | static void |
| 1735 | print_padding_statement (s) |
| 1736 | lang_padding_statement_type *s; |
| 1737 | { |
| 1738 | int len; |
| 1739 | bfd_vma addr; |
| 1740 | |
| 1741 | minfo (" *fill*"); |
| 1742 | |
| 1743 | len = sizeof " *fill*" - 1; |
| 1744 | while (len < SECTION_NAME_MAP_LENGTH) |
| 1745 | { |
| 1746 | print_space (); |
| 1747 | ++len; |
| 1748 | } |
| 1749 | |
| 1750 | addr = s->output_offset; |
| 1751 | if (s->output_section != NULL) |
| 1752 | addr += s->output_section->vma; |
| 1753 | minfo ("0x%V %W", addr, s->size); |
| 1754 | |
| 1755 | if (s->fill != 0) |
| 1756 | minfo (" %u", s->fill); |
| 1757 | |
| 1758 | print_nl (); |
| 1759 | |
| 1760 | print_dot = addr + s->size; |
| 1761 | } |
| 1762 | |
| 1763 | static void |
| 1764 | print_wild_statement (w, os) |
| 1765 | lang_wild_statement_type * w; |
| 1766 | lang_output_section_statement_type * os; |
| 1767 | { |
| 1768 | print_space (); |
| 1769 | |
| 1770 | if (w->filename != NULL) |
| 1771 | minfo ("%s", w->filename); |
| 1772 | else |
| 1773 | minfo ("*"); |
| 1774 | |
| 1775 | if (w->section_name != NULL) |
| 1776 | minfo ("(%s)", w->section_name); |
| 1777 | else |
| 1778 | minfo ("(*)"); |
| 1779 | |
| 1780 | print_nl (); |
| 1781 | |
| 1782 | print_statement_list (w->children.head, os); |
| 1783 | } |
| 1784 | |
| 1785 | /* Print a group statement. */ |
| 1786 | |
| 1787 | static void |
| 1788 | print_group (s, os) |
| 1789 | lang_group_statement_type *s; |
| 1790 | lang_output_section_statement_type *os; |
| 1791 | { |
| 1792 | fprintf (config.map_file, "START GROUP\n"); |
| 1793 | print_statement_list (s->children.head, os); |
| 1794 | fprintf (config.map_file, "END GROUP\n"); |
| 1795 | } |
| 1796 | |
| 1797 | /* Print the list of statements in S. |
| 1798 | This can be called for any statement type. */ |
| 1799 | |
| 1800 | static void |
| 1801 | print_statement_list (s, os) |
| 1802 | lang_statement_union_type *s; |
| 1803 | lang_output_section_statement_type *os; |
| 1804 | { |
| 1805 | while (s != NULL) |
| 1806 | { |
| 1807 | print_statement (s, os); |
| 1808 | s = s->next; |
| 1809 | } |
| 1810 | } |
| 1811 | |
| 1812 | /* Print the first statement in statement list S. |
| 1813 | This can be called for any statement type. */ |
| 1814 | |
| 1815 | static void |
| 1816 | print_statement (s, os) |
| 1817 | lang_statement_union_type *s; |
| 1818 | lang_output_section_statement_type *os; |
| 1819 | { |
| 1820 | switch (s->header.type) |
| 1821 | { |
| 1822 | default: |
| 1823 | fprintf (config.map_file, "Fail with %d\n", s->header.type); |
| 1824 | FAIL (); |
| 1825 | break; |
| 1826 | case lang_constructors_statement_enum: |
| 1827 | if (constructor_list.head != NULL) |
| 1828 | { |
| 1829 | minfo (" CONSTRUCTORS\n"); |
| 1830 | print_statement_list (constructor_list.head, os); |
| 1831 | } |
| 1832 | break; |
| 1833 | case lang_wild_statement_enum: |
| 1834 | print_wild_statement (&s->wild_statement, os); |
| 1835 | break; |
| 1836 | case lang_address_statement_enum: |
| 1837 | print_address_statement (&s->address_statement); |
| 1838 | break; |
| 1839 | case lang_object_symbols_statement_enum: |
| 1840 | minfo (" CREATE_OBJECT_SYMBOLS\n"); |
| 1841 | break; |
| 1842 | case lang_fill_statement_enum: |
| 1843 | print_fill_statement (&s->fill_statement); |
| 1844 | break; |
| 1845 | case lang_data_statement_enum: |
| 1846 | print_data_statement (&s->data_statement); |
| 1847 | break; |
| 1848 | case lang_reloc_statement_enum: |
| 1849 | print_reloc_statement (&s->reloc_statement); |
| 1850 | break; |
| 1851 | case lang_input_section_enum: |
| 1852 | print_input_section (&s->input_section); |
| 1853 | break; |
| 1854 | case lang_padding_statement_enum: |
| 1855 | print_padding_statement (&s->padding_statement); |
| 1856 | break; |
| 1857 | case lang_output_section_statement_enum: |
| 1858 | print_output_section_statement (&s->output_section_statement); |
| 1859 | break; |
| 1860 | case lang_assignment_statement_enum: |
| 1861 | print_assignment (&s->assignment_statement, os); |
| 1862 | break; |
| 1863 | case lang_target_statement_enum: |
| 1864 | fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target); |
| 1865 | break; |
| 1866 | case lang_output_statement_enum: |
| 1867 | minfo ("OUTPUT(%s", s->output_statement.name); |
| 1868 | if (output_target != NULL) |
| 1869 | minfo (" %s", output_target); |
| 1870 | minfo (")\n"); |
| 1871 | break; |
| 1872 | case lang_input_statement_enum: |
| 1873 | print_input_statement (&s->input_statement); |
| 1874 | break; |
| 1875 | case lang_group_statement_enum: |
| 1876 | print_group (&s->group_statement, os); |
| 1877 | break; |
| 1878 | case lang_afile_asection_pair_statement_enum: |
| 1879 | FAIL (); |
| 1880 | break; |
| 1881 | } |
| 1882 | } |
| 1883 | |
| 1884 | static void |
| 1885 | print_statements () |
| 1886 | { |
| 1887 | print_statement_list (statement_list.head, abs_output_section); |
| 1888 | } |
| 1889 | |
| 1890 | /* Print the first N statements in statement list S to STDERR. |
| 1891 | If N == 0, nothing is printed. |
| 1892 | If N < 0, the entire list is printed. |
| 1893 | Intended to be called from GDB. */ |
| 1894 | |
| 1895 | void |
| 1896 | dprint_statement (s, n) |
| 1897 | lang_statement_union_type * s; |
| 1898 | int n; |
| 1899 | { |
| 1900 | FILE *map_save = config.map_file; |
| 1901 | |
| 1902 | config.map_file = stderr; |
| 1903 | |
| 1904 | if (n < 0) |
| 1905 | print_statement_list (s, abs_output_section); |
| 1906 | else |
| 1907 | { |
| 1908 | while (s && --n >= 0) |
| 1909 | { |
| 1910 | print_statement (s, abs_output_section); |
| 1911 | s = s->next; |
| 1912 | } |
| 1913 | } |
| 1914 | |
| 1915 | config.map_file = map_save; |
| 1916 | } |
| 1917 | |
| 1918 | static bfd_vma |
| 1919 | insert_pad (this_ptr, fill, power, output_section_statement, dot) |
| 1920 | lang_statement_union_type ** this_ptr; |
| 1921 | fill_type fill; |
| 1922 | unsigned int power; |
| 1923 | asection * output_section_statement; |
| 1924 | bfd_vma dot; |
| 1925 | { |
| 1926 | /* Align this section first to the |
| 1927 | input sections requirement, then |
| 1928 | to the output section's requirement. |
| 1929 | If this alignment is > than any seen before, |
| 1930 | then record it too. Perform the alignment by |
| 1931 | inserting a magic 'padding' statement. |
| 1932 | */ |
| 1933 | |
| 1934 | unsigned int alignment_needed = align_power (dot, power) - dot; |
| 1935 | |
| 1936 | if (alignment_needed != 0) |
| 1937 | { |
| 1938 | lang_statement_union_type *new = |
| 1939 | ((lang_statement_union_type *) |
| 1940 | stat_alloc (sizeof (lang_padding_statement_type))); |
| 1941 | |
| 1942 | /* Link into existing chain */ |
| 1943 | new->header.next = *this_ptr; |
| 1944 | *this_ptr = new; |
| 1945 | new->header.type = lang_padding_statement_enum; |
| 1946 | new->padding_statement.output_section = output_section_statement; |
| 1947 | new->padding_statement.output_offset = |
| 1948 | dot - output_section_statement->vma; |
| 1949 | new->padding_statement.fill = fill; |
| 1950 | new->padding_statement.size = alignment_needed; |
| 1951 | } |
| 1952 | |
| 1953 | |
| 1954 | /* Remember the most restrictive alignment */ |
| 1955 | if (power > output_section_statement->alignment_power) |
| 1956 | { |
| 1957 | output_section_statement->alignment_power = power; |
| 1958 | } |
| 1959 | output_section_statement->_raw_size += alignment_needed; |
| 1960 | return alignment_needed + dot; |
| 1961 | |
| 1962 | } |
| 1963 | |
| 1964 | /* Work out how much this section will move the dot point */ |
| 1965 | static bfd_vma |
| 1966 | size_input_section (this_ptr, output_section_statement, fill, dot, relax) |
| 1967 | lang_statement_union_type ** this_ptr; |
| 1968 | lang_output_section_statement_type * output_section_statement; |
| 1969 | fill_type fill; |
| 1970 | bfd_vma dot; |
| 1971 | boolean relax; |
| 1972 | { |
| 1973 | lang_input_section_type *is = &((*this_ptr)->input_section); |
| 1974 | asection *i = is->section; |
| 1975 | |
| 1976 | if (is->ifile->just_syms_flag == false) |
| 1977 | { |
| 1978 | if (output_section_statement->subsection_alignment != -1) |
| 1979 | i->alignment_power = |
| 1980 | output_section_statement->subsection_alignment; |
| 1981 | |
| 1982 | dot = insert_pad (this_ptr, fill, i->alignment_power, |
| 1983 | output_section_statement->bfd_section, dot); |
| 1984 | |
| 1985 | /* Remember where in the output section this input section goes */ |
| 1986 | |
| 1987 | i->output_offset = dot - output_section_statement->bfd_section->vma; |
| 1988 | |
| 1989 | /* Mark how big the output section must be to contain this now |
| 1990 | */ |
| 1991 | if (i->_cooked_size != 0) |
| 1992 | dot += i->_cooked_size; |
| 1993 | else |
| 1994 | dot += i->_raw_size; |
| 1995 | output_section_statement->bfd_section->_raw_size = dot - output_section_statement->bfd_section->vma; |
| 1996 | } |
| 1997 | else |
| 1998 | { |
| 1999 | i->output_offset = i->vma - output_section_statement->bfd_section->vma; |
| 2000 | } |
| 2001 | |
| 2002 | return dot; |
| 2003 | } |
| 2004 | |
| 2005 | /* This variable indicates whether bfd_relax_section should be called |
| 2006 | again. */ |
| 2007 | |
| 2008 | static boolean relax_again; |
| 2009 | |
| 2010 | /* Set the sizes for all the output sections. */ |
| 2011 | |
| 2012 | bfd_vma |
| 2013 | lang_size_sections (s, output_section_statement, prev, fill, dot, relax) |
| 2014 | lang_statement_union_type * s; |
| 2015 | lang_output_section_statement_type * output_section_statement; |
| 2016 | lang_statement_union_type ** prev; |
| 2017 | fill_type fill; |
| 2018 | bfd_vma dot; |
| 2019 | boolean relax; |
| 2020 | { |
| 2021 | /* Size up the sections from their constituent parts */ |
| 2022 | for (; s != (lang_statement_union_type *) NULL; s = s->next) |
| 2023 | { |
| 2024 | switch (s->header.type) |
| 2025 | { |
| 2026 | |
| 2027 | case lang_output_section_statement_enum: |
| 2028 | { |
| 2029 | bfd_vma after; |
| 2030 | lang_output_section_statement_type *os = &s->output_section_statement; |
| 2031 | |
| 2032 | if (os->bfd_section == NULL) |
| 2033 | { |
| 2034 | /* This section was never actually created. */ |
| 2035 | break; |
| 2036 | } |
| 2037 | |
| 2038 | /* If this is a COFF shared library section, use the size and |
| 2039 | address from the input section. FIXME: This is COFF |
| 2040 | specific; it would be cleaner if there were some other way |
| 2041 | to do this, but nothing simple comes to mind. */ |
| 2042 | if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) |
| 2043 | { |
| 2044 | asection *input; |
| 2045 | |
| 2046 | if (os->children.head == NULL |
| 2047 | || os->children.head->next != NULL |
| 2048 | || os->children.head->header.type != lang_input_section_enum) |
| 2049 | einfo ("%P%X: Internal error on COFF shared library section %s", |
| 2050 | os->name); |
| 2051 | |
| 2052 | input = os->children.head->input_section.section; |
| 2053 | bfd_set_section_vma (os->bfd_section->owner, |
| 2054 | os->bfd_section, |
| 2055 | bfd_section_vma (input->owner, input)); |
| 2056 | os->bfd_section->_raw_size = input->_raw_size; |
| 2057 | break; |
| 2058 | } |
| 2059 | |
| 2060 | if (bfd_is_abs_section (os->bfd_section)) |
| 2061 | { |
| 2062 | /* No matter what happens, an abs section starts at zero */ |
| 2063 | ASSERT (os->bfd_section->vma == 0); |
| 2064 | } |
| 2065 | else |
| 2066 | { |
| 2067 | if (os->addr_tree == (etree_type *) NULL) |
| 2068 | { |
| 2069 | /* No address specified for this section, get one |
| 2070 | from the region specification |
| 2071 | */ |
| 2072 | if (os->region == (lang_memory_region_type *) NULL) |
| 2073 | { |
| 2074 | os->region = lang_memory_region_lookup ("*default*"); |
| 2075 | } |
| 2076 | dot = os->region->current; |
| 2077 | if (os->section_alignment == -1) |
| 2078 | { |
| 2079 | bfd_vma olddot; |
| 2080 | |
| 2081 | olddot = dot; |
| 2082 | dot = align_power (dot, os->bfd_section->alignment_power); |
| 2083 | if (dot != olddot && config.warn_section_align) |
| 2084 | einfo ("%P: warning: changing start of section %s by %u bytes\n", |
| 2085 | os->name, (unsigned int) (dot - olddot)); |
| 2086 | } |
| 2087 | } |
| 2088 | else |
| 2089 | { |
| 2090 | etree_value_type r; |
| 2091 | |
| 2092 | r = exp_fold_tree (os->addr_tree, |
| 2093 | abs_output_section, |
| 2094 | lang_allocating_phase_enum, |
| 2095 | dot, &dot); |
| 2096 | if (r.valid == false) |
| 2097 | { |
| 2098 | einfo ("%F%S: non constant address expression for section %s\n", |
| 2099 | os->name); |
| 2100 | } |
| 2101 | dot = r.value + r.section->bfd_section->vma; |
| 2102 | } |
| 2103 | /* The section starts here */ |
| 2104 | /* First, align to what the section needs */ |
| 2105 | |
| 2106 | if (os->section_alignment != -1) |
| 2107 | dot = align_power (dot, os->section_alignment); |
| 2108 | |
| 2109 | bfd_set_section_vma (0, os->bfd_section, dot); |
| 2110 | |
| 2111 | os->bfd_section->output_offset = 0; |
| 2112 | } |
| 2113 | |
| 2114 | (void) lang_size_sections (os->children.head, os, &os->children.head, |
| 2115 | os->fill, dot, relax); |
| 2116 | /* Ignore the size of the input sections, use the vma and size to */ |
| 2117 | /* align against */ |
| 2118 | |
| 2119 | after = ALIGN_N (os->bfd_section->vma + |
| 2120 | os->bfd_section->_raw_size, |
| 2121 | /* The coercion here is important, see ld.h. */ |
| 2122 | (bfd_vma) os->block_value); |
| 2123 | |
| 2124 | if (bfd_is_abs_section (os->bfd_section)) |
| 2125 | ASSERT (after == os->bfd_section->vma); |
| 2126 | else |
| 2127 | os->bfd_section->_raw_size = after - os->bfd_section->vma; |
| 2128 | dot = os->bfd_section->vma + os->bfd_section->_raw_size; |
| 2129 | os->processed = true; |
| 2130 | |
| 2131 | /* Replace into region ? */ |
| 2132 | if (os->region != (lang_memory_region_type *) NULL) |
| 2133 | { |
| 2134 | os->region->current = dot; |
| 2135 | /* Make sure this isn't silly. */ |
| 2136 | if (os->region->current < os->region->origin |
| 2137 | || (os->region->current - os->region->origin |
| 2138 | > os->region->length)) |
| 2139 | { |
| 2140 | if (os->addr_tree != (etree_type *) NULL) |
| 2141 | { |
| 2142 | einfo ("%X%P: address 0x%v of %B section %s is not within region %s\n", |
| 2143 | os->region->current, |
| 2144 | os->bfd_section->owner, |
| 2145 | os->bfd_section->name, |
| 2146 | os->region->name); |
| 2147 | } |
| 2148 | else |
| 2149 | { |
| 2150 | einfo ("%X%P: region %s is full (%B section %s)\n", |
| 2151 | os->region->name, |
| 2152 | os->bfd_section->owner, |
| 2153 | os->bfd_section->name); |
| 2154 | } |
| 2155 | /* Reset the region pointer. */ |
| 2156 | os->region->current = os->region->origin; |
| 2157 | } |
| 2158 | } |
| 2159 | } |
| 2160 | break; |
| 2161 | |
| 2162 | case lang_constructors_statement_enum: |
| 2163 | dot = lang_size_sections (constructor_list.head, |
| 2164 | output_section_statement, |
| 2165 | &s->wild_statement.children.head, |
| 2166 | fill, |
| 2167 | dot, relax); |
| 2168 | break; |
| 2169 | |
| 2170 | case lang_data_statement_enum: |
| 2171 | { |
| 2172 | unsigned int size = 0; |
| 2173 | |
| 2174 | s->data_statement.output_vma = dot - output_section_statement->bfd_section->vma; |
| 2175 | s->data_statement.output_section = |
| 2176 | output_section_statement->bfd_section; |
| 2177 | |
| 2178 | switch (s->data_statement.type) |
| 2179 | { |
| 2180 | case QUAD: |
| 2181 | size = QUAD_SIZE; |
| 2182 | break; |
| 2183 | case LONG: |
| 2184 | size = LONG_SIZE; |
| 2185 | break; |
| 2186 | case SHORT: |
| 2187 | size = SHORT_SIZE; |
| 2188 | break; |
| 2189 | case BYTE: |
| 2190 | size = BYTE_SIZE; |
| 2191 | break; |
| 2192 | |
| 2193 | } |
| 2194 | dot += size; |
| 2195 | output_section_statement->bfd_section->_raw_size += size; |
| 2196 | /* The output section gets contents, and then we inspect for |
| 2197 | any flags set in the input script which override any ALLOC */ |
| 2198 | output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS; |
| 2199 | if (!(output_section_statement->flags & SEC_NEVER_LOAD)) { |
| 2200 | output_section_statement->bfd_section->flags |= SEC_ALLOC | SEC_LOAD; |
| 2201 | } |
| 2202 | } |
| 2203 | break; |
| 2204 | |
| 2205 | case lang_reloc_statement_enum: |
| 2206 | { |
| 2207 | int size; |
| 2208 | |
| 2209 | s->reloc_statement.output_vma = |
| 2210 | dot - output_section_statement->bfd_section->vma; |
| 2211 | s->reloc_statement.output_section = |
| 2212 | output_section_statement->bfd_section; |
| 2213 | size = bfd_get_reloc_size (s->reloc_statement.howto); |
| 2214 | dot += size; |
| 2215 | output_section_statement->bfd_section->_raw_size += size; |
| 2216 | } |
| 2217 | break; |
| 2218 | |
| 2219 | case lang_wild_statement_enum: |
| 2220 | |
| 2221 | dot = lang_size_sections (s->wild_statement.children.head, |
| 2222 | output_section_statement, |
| 2223 | &s->wild_statement.children.head, |
| 2224 | |
| 2225 | fill, dot, relax); |
| 2226 | |
| 2227 | break; |
| 2228 | |
| 2229 | case lang_object_symbols_statement_enum: |
| 2230 | link_info.create_object_symbols_section = |
| 2231 | output_section_statement->bfd_section; |
| 2232 | break; |
| 2233 | case lang_output_statement_enum: |
| 2234 | case lang_target_statement_enum: |
| 2235 | break; |
| 2236 | case lang_input_section_enum: |
| 2237 | { |
| 2238 | asection *i; |
| 2239 | |
| 2240 | i = (*prev)->input_section.section; |
| 2241 | if (! relax) |
| 2242 | { |
| 2243 | if (i->_cooked_size == 0) |
| 2244 | i->_cooked_size = i->_raw_size; |
| 2245 | } |
| 2246 | else |
| 2247 | { |
| 2248 | boolean again; |
| 2249 | |
| 2250 | if (! bfd_relax_section (i->owner, i, &link_info, &again)) |
| 2251 | einfo ("%P%F: can't relax section: %E\n"); |
| 2252 | if (again) |
| 2253 | relax_again = true; |
| 2254 | } |
| 2255 | dot = size_input_section (prev, |
| 2256 | output_section_statement, |
| 2257 | output_section_statement->fill, |
| 2258 | dot, relax); |
| 2259 | } |
| 2260 | break; |
| 2261 | case lang_input_statement_enum: |
| 2262 | break; |
| 2263 | case lang_fill_statement_enum: |
| 2264 | s->fill_statement.output_section = output_section_statement->bfd_section; |
| 2265 | |
| 2266 | fill = s->fill_statement.fill; |
| 2267 | break; |
| 2268 | case lang_assignment_statement_enum: |
| 2269 | { |
| 2270 | bfd_vma newdot = dot; |
| 2271 | |
| 2272 | exp_fold_tree (s->assignment_statement.exp, |
| 2273 | output_section_statement, |
| 2274 | lang_allocating_phase_enum, |
| 2275 | dot, |
| 2276 | &newdot); |
| 2277 | |
| 2278 | if (newdot != dot && !relax) |
| 2279 | { |
| 2280 | /* The assignment changed dot. Insert a pad. */ |
| 2281 | if (output_section_statement == abs_output_section) |
| 2282 | { |
| 2283 | /* If we don't have an output section, then just adjust |
| 2284 | the default memory address. */ |
| 2285 | lang_memory_region_lookup ("*default*")->current = newdot; |
| 2286 | } |
| 2287 | else |
| 2288 | { |
| 2289 | lang_statement_union_type *new = |
| 2290 | ((lang_statement_union_type *) |
| 2291 | stat_alloc (sizeof (lang_padding_statement_type))); |
| 2292 | |
| 2293 | /* Link into existing chain */ |
| 2294 | new->header.next = *prev; |
| 2295 | *prev = new; |
| 2296 | new->header.type = lang_padding_statement_enum; |
| 2297 | new->padding_statement.output_section = |
| 2298 | output_section_statement->bfd_section; |
| 2299 | new->padding_statement.output_offset = |
| 2300 | dot - output_section_statement->bfd_section->vma; |
| 2301 | new->padding_statement.fill = fill; |
| 2302 | new->padding_statement.size = newdot - dot; |
| 2303 | output_section_statement->bfd_section->_raw_size += |
| 2304 | new->padding_statement.size; |
| 2305 | } |
| 2306 | |
| 2307 | dot = newdot; |
| 2308 | } |
| 2309 | } |
| 2310 | break; |
| 2311 | |
| 2312 | case lang_padding_statement_enum: |
| 2313 | /* If we are relaxing, and this is not the first pass, some |
| 2314 | padding statements may have been inserted during previous |
| 2315 | passes. We may have to move the padding statement to a new |
| 2316 | location if dot has a different value at this point in this |
| 2317 | pass than it did at this point in the previous pass. */ |
| 2318 | s->padding_statement.output_offset = |
| 2319 | dot - output_section_statement->bfd_section->vma; |
| 2320 | dot += s->padding_statement.size; |
| 2321 | output_section_statement->bfd_section->_raw_size += |
| 2322 | s->padding_statement.size; |
| 2323 | break; |
| 2324 | |
| 2325 | case lang_group_statement_enum: |
| 2326 | dot = lang_size_sections (s->group_statement.children.head, |
| 2327 | output_section_statement, |
| 2328 | &s->group_statement.children.head, |
| 2329 | fill, dot, relax); |
| 2330 | break; |
| 2331 | |
| 2332 | default: |
| 2333 | FAIL (); |
| 2334 | break; |
| 2335 | |
| 2336 | /* This can only get here when relaxing is turned on */ |
| 2337 | |
| 2338 | case lang_address_statement_enum: |
| 2339 | break; |
| 2340 | } |
| 2341 | prev = &s->header.next; |
| 2342 | } |
| 2343 | return dot; |
| 2344 | } |
| 2345 | |
| 2346 | bfd_vma |
| 2347 | lang_do_assignments (s, output_section_statement, fill, dot) |
| 2348 | lang_statement_union_type * s; |
| 2349 | lang_output_section_statement_type * output_section_statement; |
| 2350 | fill_type fill; |
| 2351 | bfd_vma dot; |
| 2352 | { |
| 2353 | for (; s != (lang_statement_union_type *) NULL; s = s->next) |
| 2354 | { |
| 2355 | switch (s->header.type) |
| 2356 | { |
| 2357 | case lang_constructors_statement_enum: |
| 2358 | dot = lang_do_assignments (constructor_list.head, |
| 2359 | output_section_statement, |
| 2360 | fill, |
| 2361 | dot); |
| 2362 | break; |
| 2363 | |
| 2364 | case lang_output_section_statement_enum: |
| 2365 | { |
| 2366 | lang_output_section_statement_type *os = |
| 2367 | &(s->output_section_statement); |
| 2368 | |
| 2369 | if (os->bfd_section != NULL) |
| 2370 | { |
| 2371 | dot = os->bfd_section->vma; |
| 2372 | (void) lang_do_assignments (os->children.head, os, |
| 2373 | os->fill, dot); |
| 2374 | dot = os->bfd_section->vma + os->bfd_section->_raw_size; |
| 2375 | } |
| 2376 | if (os->load_base) |
| 2377 | { |
| 2378 | /* If nothing has been placed into the output section then |
| 2379 | it won't have a bfd_section. */ |
| 2380 | if (os->bfd_section) |
| 2381 | { |
| 2382 | os->bfd_section->lma |
| 2383 | = exp_get_abs_int(os->load_base, 0,"load base", lang_final_phase_enum); |
| 2384 | } |
| 2385 | } |
| 2386 | } |
| 2387 | break; |
| 2388 | case lang_wild_statement_enum: |
| 2389 | |
| 2390 | dot = lang_do_assignments (s->wild_statement.children.head, |
| 2391 | output_section_statement, |
| 2392 | fill, dot); |
| 2393 | |
| 2394 | break; |
| 2395 | |
| 2396 | case lang_object_symbols_statement_enum: |
| 2397 | case lang_output_statement_enum: |
| 2398 | case lang_target_statement_enum: |
| 2399 | #if 0 |
| 2400 | case lang_common_statement_enum: |
| 2401 | #endif |
| 2402 | break; |
| 2403 | case lang_data_statement_enum: |
| 2404 | { |
| 2405 | etree_value_type value; |
| 2406 | |
| 2407 | value = exp_fold_tree (s->data_statement.exp, |
| 2408 | abs_output_section, |
| 2409 | lang_final_phase_enum, dot, &dot); |
| 2410 | s->data_statement.value = value.value; |
| 2411 | if (value.valid == false) |
| 2412 | einfo ("%F%P: invalid data statement\n"); |
| 2413 | } |
| 2414 | switch (s->data_statement.type) |
| 2415 | { |
| 2416 | case QUAD: |
| 2417 | dot += QUAD_SIZE; |
| 2418 | break; |
| 2419 | case LONG: |
| 2420 | dot += LONG_SIZE; |
| 2421 | break; |
| 2422 | case SHORT: |
| 2423 | dot += SHORT_SIZE; |
| 2424 | break; |
| 2425 | case BYTE: |
| 2426 | dot += BYTE_SIZE; |
| 2427 | break; |
| 2428 | } |
| 2429 | break; |
| 2430 | |
| 2431 | case lang_reloc_statement_enum: |
| 2432 | { |
| 2433 | etree_value_type value; |
| 2434 | |
| 2435 | value = exp_fold_tree (s->reloc_statement.addend_exp, |
| 2436 | abs_output_section, |
| 2437 | lang_final_phase_enum, dot, &dot); |
| 2438 | s->reloc_statement.addend_value = value.value; |
| 2439 | if (value.valid == false) |
| 2440 | einfo ("%F%P: invalid reloc statement\n"); |
| 2441 | } |
| 2442 | dot += bfd_get_reloc_size (s->reloc_statement.howto); |
| 2443 | break; |
| 2444 | |
| 2445 | case lang_input_section_enum: |
| 2446 | { |
| 2447 | asection *in = s->input_section.section; |
| 2448 | |
| 2449 | if (in->_cooked_size != 0) |
| 2450 | dot += in->_cooked_size; |
| 2451 | else |
| 2452 | dot += in->_raw_size; |
| 2453 | } |
| 2454 | break; |
| 2455 | |
| 2456 | case lang_input_statement_enum: |
| 2457 | break; |
| 2458 | case lang_fill_statement_enum: |
| 2459 | fill = s->fill_statement.fill; |
| 2460 | break; |
| 2461 | case lang_assignment_statement_enum: |
| 2462 | { |
| 2463 | exp_fold_tree (s->assignment_statement.exp, |
| 2464 | output_section_statement, |
| 2465 | lang_final_phase_enum, |
| 2466 | dot, |
| 2467 | &dot); |
| 2468 | } |
| 2469 | |
| 2470 | break; |
| 2471 | case lang_padding_statement_enum: |
| 2472 | dot += s->padding_statement.size; |
| 2473 | break; |
| 2474 | |
| 2475 | case lang_group_statement_enum: |
| 2476 | dot = lang_do_assignments (s->group_statement.children.head, |
| 2477 | output_section_statement, |
| 2478 | fill, dot); |
| 2479 | |
| 2480 | break; |
| 2481 | |
| 2482 | default: |
| 2483 | FAIL (); |
| 2484 | break; |
| 2485 | case lang_address_statement_enum: |
| 2486 | break; |
| 2487 | } |
| 2488 | |
| 2489 | } |
| 2490 | return dot; |
| 2491 | } |
| 2492 | |
| 2493 | /* Fix any .startof. or .sizeof. symbols. When the assemblers see the |
| 2494 | operator .startof. (section_name), it produces an undefined symbol |
| 2495 | .startof.section_name. Similarly, when it sees |
| 2496 | .sizeof. (section_name), it produces an undefined symbol |
| 2497 | .sizeof.section_name. For all the output sections, we look for |
| 2498 | such symbols, and set them to the correct value. */ |
| 2499 | |
| 2500 | static void |
| 2501 | lang_set_startof () |
| 2502 | { |
| 2503 | asection *s; |
| 2504 | |
| 2505 | if (link_info.relocateable) |
| 2506 | return; |
| 2507 | |
| 2508 | for (s = output_bfd->sections; s != NULL; s = s->next) |
| 2509 | { |
| 2510 | const char *secname; |
| 2511 | char *buf; |
| 2512 | struct bfd_link_hash_entry *h; |
| 2513 | |
| 2514 | secname = bfd_get_section_name (output_bfd, s); |
| 2515 | buf = xmalloc (10 + strlen (secname)); |
| 2516 | |
| 2517 | sprintf (buf, ".startof.%s", secname); |
| 2518 | h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true); |
| 2519 | if (h != NULL && h->type == bfd_link_hash_undefined) |
| 2520 | { |
| 2521 | h->type = bfd_link_hash_defined; |
| 2522 | h->u.def.value = bfd_get_section_vma (output_bfd, s); |
| 2523 | h->u.def.section = bfd_abs_section_ptr; |
| 2524 | } |
| 2525 | |
| 2526 | sprintf (buf, ".sizeof.%s", secname); |
| 2527 | h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true); |
| 2528 | if (h != NULL && h->type == bfd_link_hash_undefined) |
| 2529 | { |
| 2530 | h->type = bfd_link_hash_defined; |
| 2531 | if (s->_cooked_size != 0) |
| 2532 | h->u.def.value = s->_cooked_size; |
| 2533 | else |
| 2534 | h->u.def.value = s->_raw_size; |
| 2535 | h->u.def.section = bfd_abs_section_ptr; |
| 2536 | } |
| 2537 | |
| 2538 | free (buf); |
| 2539 | } |
| 2540 | } |
| 2541 | |
| 2542 | static void |
| 2543 | lang_finish () |
| 2544 | { |
| 2545 | struct bfd_link_hash_entry *h; |
| 2546 | boolean warn; |
| 2547 | |
| 2548 | if (link_info.relocateable || link_info.shared) |
| 2549 | warn = false; |
| 2550 | else |
| 2551 | warn = true; |
| 2552 | |
| 2553 | if (entry_symbol == (char *) NULL) |
| 2554 | { |
| 2555 | /* No entry has been specified. Look for start, but don't warn |
| 2556 | if we don't find it. */ |
| 2557 | entry_symbol = "start"; |
| 2558 | warn = false; |
| 2559 | } |
| 2560 | |
| 2561 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true); |
| 2562 | if (h != (struct bfd_link_hash_entry *) NULL |
| 2563 | && (h->type == bfd_link_hash_defined |
| 2564 | || h->type == bfd_link_hash_defweak) |
| 2565 | && h->u.def.section->output_section != NULL) |
| 2566 | { |
| 2567 | bfd_vma val; |
| 2568 | |
| 2569 | val = (h->u.def.value |
| 2570 | + bfd_get_section_vma (output_bfd, |
| 2571 | h->u.def.section->output_section) |
| 2572 | + h->u.def.section->output_offset); |
| 2573 | if (! bfd_set_start_address (output_bfd, val)) |
| 2574 | einfo ("%P%F:%s: can't set start address\n", entry_symbol); |
| 2575 | } |
| 2576 | else |
| 2577 | { |
| 2578 | asection *ts; |
| 2579 | |
| 2580 | /* Can't find the entry symbol. Use the first address in the |
| 2581 | text section. */ |
| 2582 | ts = bfd_get_section_by_name (output_bfd, ".text"); |
| 2583 | if (ts != (asection *) NULL) |
| 2584 | { |
| 2585 | if (warn) |
| 2586 | einfo ("%P: warning: cannot find entry symbol %s; defaulting to %V\n", |
| 2587 | entry_symbol, bfd_get_section_vma (output_bfd, ts)); |
| 2588 | if (! bfd_set_start_address (output_bfd, |
| 2589 | bfd_get_section_vma (output_bfd, ts))) |
| 2590 | einfo ("%P%F: can't set start address\n"); |
| 2591 | } |
| 2592 | else |
| 2593 | { |
| 2594 | if (warn) |
| 2595 | einfo ("%P: warning: cannot find entry symbol %s; not setting start address\n", |
| 2596 | entry_symbol); |
| 2597 | } |
| 2598 | } |
| 2599 | } |
| 2600 | |
| 2601 | /* Check that the architecture of all the input files is compatible |
| 2602 | with the output file. Also call the backend to let it do any |
| 2603 | other checking that is needed. */ |
| 2604 | |
| 2605 | static void |
| 2606 | lang_check () |
| 2607 | { |
| 2608 | lang_statement_union_type *file; |
| 2609 | bfd *input_bfd; |
| 2610 | CONST bfd_arch_info_type *compatible; |
| 2611 | |
| 2612 | for (file = file_chain.head; |
| 2613 | file != (lang_statement_union_type *) NULL; |
| 2614 | file = file->input_statement.next) |
| 2615 | { |
| 2616 | input_bfd = file->input_statement.the_bfd; |
| 2617 | compatible = bfd_arch_get_compatible (input_bfd, |
| 2618 | output_bfd); |
| 2619 | if (compatible == NULL) |
| 2620 | einfo ("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n", |
| 2621 | bfd_printable_name (input_bfd), input_bfd, |
| 2622 | bfd_printable_name (output_bfd)); |
| 2623 | |
| 2624 | else |
| 2625 | bfd_merge_private_bfd_data (input_bfd, output_bfd); |
| 2626 | } |
| 2627 | } |
| 2628 | |
| 2629 | /* Look through all the global common symbols and attach them to the |
| 2630 | correct section. The -sort-common command line switch may be used |
| 2631 | to roughly sort the entries by size. */ |
| 2632 | |
| 2633 | static void |
| 2634 | lang_common () |
| 2635 | { |
| 2636 | if (link_info.relocateable |
| 2637 | && ! command_line.force_common_definition) |
| 2638 | return; |
| 2639 | |
| 2640 | if (! config.sort_common) |
| 2641 | bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL); |
| 2642 | else |
| 2643 | { |
| 2644 | int power; |
| 2645 | |
| 2646 | for (power = 4; power >= 0; power--) |
| 2647 | bfd_link_hash_traverse (link_info.hash, lang_one_common, |
| 2648 | (PTR) &power); |
| 2649 | } |
| 2650 | } |
| 2651 | |
| 2652 | /* Place one common symbol in the correct section. */ |
| 2653 | |
| 2654 | static boolean |
| 2655 | lang_one_common (h, info) |
| 2656 | struct bfd_link_hash_entry *h; |
| 2657 | PTR info; |
| 2658 | { |
| 2659 | unsigned int power_of_two; |
| 2660 | bfd_vma size; |
| 2661 | asection *section; |
| 2662 | |
| 2663 | if (h->type != bfd_link_hash_common) |
| 2664 | return true; |
| 2665 | |
| 2666 | size = h->u.c.size; |
| 2667 | power_of_two = h->u.c.p->alignment_power; |
| 2668 | |
| 2669 | if (config.sort_common |
| 2670 | && power_of_two < (unsigned int) *(int *) info) |
| 2671 | return true; |
| 2672 | |
| 2673 | section = h->u.c.p->section; |
| 2674 | |
| 2675 | /* Increase the size of the section. */ |
| 2676 | section->_raw_size = ALIGN_N (section->_raw_size, |
| 2677 | (bfd_size_type) (1 << power_of_two)); |
| 2678 | |
| 2679 | /* Adjust the alignment if necessary. */ |
| 2680 | if (power_of_two > section->alignment_power) |
| 2681 | section->alignment_power = power_of_two; |
| 2682 | |
| 2683 | /* Change the symbol from common to defined. */ |
| 2684 | h->type = bfd_link_hash_defined; |
| 2685 | h->u.def.section = section; |
| 2686 | h->u.def.value = section->_raw_size; |
| 2687 | |
| 2688 | /* Increase the size of the section. */ |
| 2689 | section->_raw_size += size; |
| 2690 | |
| 2691 | /* Make sure the section is allocated in memory, and make sure that |
| 2692 | it is no longer a common section. */ |
| 2693 | section->flags |= SEC_ALLOC; |
| 2694 | section->flags &= ~ SEC_IS_COMMON; |
| 2695 | |
| 2696 | if (config.map_file != NULL) |
| 2697 | { |
| 2698 | static boolean header_printed; |
| 2699 | int len; |
| 2700 | char *name; |
| 2701 | char buf[50]; |
| 2702 | |
| 2703 | if (! header_printed) |
| 2704 | { |
| 2705 | minfo ("\nAllocating common symbols\n"); |
| 2706 | minfo ("Common symbol size file\n\n"); |
| 2707 | header_printed = true; |
| 2708 | } |
| 2709 | |
| 2710 | name = demangle (h->root.string); |
| 2711 | minfo ("%s", name); |
| 2712 | len = strlen (name); |
| 2713 | free (name); |
| 2714 | |
| 2715 | if (len >= 19) |
| 2716 | { |
| 2717 | print_nl (); |
| 2718 | len = 0; |
| 2719 | } |
| 2720 | while (len < 20) |
| 2721 | { |
| 2722 | print_space (); |
| 2723 | ++len; |
| 2724 | } |
| 2725 | |
| 2726 | minfo ("0x"); |
| 2727 | if (size <= 0xffffffff) |
| 2728 | sprintf (buf, "%lx", (unsigned long) size); |
| 2729 | else |
| 2730 | sprintf_vma (buf, size); |
| 2731 | minfo ("%s", buf); |
| 2732 | len = strlen (buf); |
| 2733 | |
| 2734 | while (len < 16) |
| 2735 | { |
| 2736 | print_space (); |
| 2737 | ++len; |
| 2738 | } |
| 2739 | |
| 2740 | minfo ("%B\n", section->owner); |
| 2741 | } |
| 2742 | |
| 2743 | return true; |
| 2744 | } |
| 2745 | |
| 2746 | /* |
| 2747 | run through the input files and ensure that every input |
| 2748 | section has somewhere to go. If one is found without |
| 2749 | a destination then create an input request and place it |
| 2750 | into the statement tree. |
| 2751 | */ |
| 2752 | |
| 2753 | static void |
| 2754 | lang_place_orphans () |
| 2755 | { |
| 2756 | lang_input_statement_type *file; |
| 2757 | |
| 2758 | for (file = (lang_input_statement_type *) file_chain.head; |
| 2759 | file != (lang_input_statement_type *) NULL; |
| 2760 | file = (lang_input_statement_type *) file->next) |
| 2761 | { |
| 2762 | asection *s; |
| 2763 | |
| 2764 | for (s = file->the_bfd->sections; |
| 2765 | s != (asection *) NULL; |
| 2766 | s = s->next) |
| 2767 | { |
| 2768 | if (s->output_section == (asection *) NULL) |
| 2769 | { |
| 2770 | /* This section of the file is not attatched, root |
| 2771 | around for a sensible place for it to go */ |
| 2772 | |
| 2773 | if (file->just_syms_flag) |
| 2774 | { |
| 2775 | /* We are only retrieving symbol values from this |
| 2776 | file. We want the symbols to act as though the |
| 2777 | values in the file are absolute. */ |
| 2778 | s->output_section = bfd_abs_section_ptr; |
| 2779 | s->output_offset = s->vma; |
| 2780 | } |
| 2781 | else if (strcmp (s->name, "COMMON") == 0) |
| 2782 | { |
| 2783 | /* This is a lonely common section which must have |
| 2784 | come from an archive. We attach to the section |
| 2785 | with the wildcard. */ |
| 2786 | if (! link_info.relocateable |
| 2787 | || command_line.force_common_definition) |
| 2788 | { |
| 2789 | if (default_common_section == NULL) |
| 2790 | { |
| 2791 | #if 0 |
| 2792 | /* This message happens when using the |
| 2793 | svr3.ifile linker script, so I have |
| 2794 | disabled it. */ |
| 2795 | info_msg ("%P: no [COMMON] command, defaulting to .bss\n"); |
| 2796 | #endif |
| 2797 | default_common_section = |
| 2798 | lang_output_section_statement_lookup (".bss"); |
| 2799 | |
| 2800 | } |
| 2801 | wild_doit (&default_common_section->children, s, |
| 2802 | default_common_section, file); |
| 2803 | } |
| 2804 | } |
| 2805 | else if (ldemul_place_orphan (file, s)) |
| 2806 | ; |
| 2807 | else |
| 2808 | { |
| 2809 | lang_output_section_statement_type *os = |
| 2810 | lang_output_section_statement_lookup (s->name); |
| 2811 | |
| 2812 | wild_doit (&os->children, s, os, file); |
| 2813 | } |
| 2814 | } |
| 2815 | } |
| 2816 | } |
| 2817 | } |
| 2818 | |
| 2819 | |
| 2820 | void |
| 2821 | lang_set_flags (ptr, flags) |
| 2822 | int *ptr; |
| 2823 | CONST char *flags; |
| 2824 | { |
| 2825 | boolean state = false; |
| 2826 | |
| 2827 | *ptr = 0; |
| 2828 | while (*flags) |
| 2829 | { |
| 2830 | if (*flags == '!') |
| 2831 | { |
| 2832 | state = false; |
| 2833 | flags++; |
| 2834 | } |
| 2835 | else |
| 2836 | state = true; |
| 2837 | switch (*flags) |
| 2838 | { |
| 2839 | case 'R': |
| 2840 | /* ptr->flag_read = state; */ |
| 2841 | break; |
| 2842 | case 'W': |
| 2843 | /* ptr->flag_write = state; */ |
| 2844 | break; |
| 2845 | case 'X': |
| 2846 | /* ptr->flag_executable= state;*/ |
| 2847 | break; |
| 2848 | case 'L': |
| 2849 | case 'I': |
| 2850 | /* ptr->flag_loadable= state;*/ |
| 2851 | break; |
| 2852 | default: |
| 2853 | einfo ("%P%F: invalid syntax in flags\n"); |
| 2854 | break; |
| 2855 | } |
| 2856 | flags++; |
| 2857 | } |
| 2858 | } |
| 2859 | |
| 2860 | /* Call a function on each input file. This function will be called |
| 2861 | on an archive, but not on the elements. */ |
| 2862 | |
| 2863 | void |
| 2864 | lang_for_each_input_file (func) |
| 2865 | void (*func) PARAMS ((lang_input_statement_type *)); |
| 2866 | { |
| 2867 | lang_input_statement_type *f; |
| 2868 | |
| 2869 | for (f = (lang_input_statement_type *) input_file_chain.head; |
| 2870 | f != NULL; |
| 2871 | f = (lang_input_statement_type *) f->next_real_file) |
| 2872 | func (f); |
| 2873 | } |
| 2874 | |
| 2875 | /* Call a function on each file. The function will be called on all |
| 2876 | the elements of an archive which are included in the link, but will |
| 2877 | not be called on the archive file itself. */ |
| 2878 | |
| 2879 | void |
| 2880 | lang_for_each_file (func) |
| 2881 | void (*func) PARAMS ((lang_input_statement_type *)); |
| 2882 | { |
| 2883 | lang_input_statement_type *f; |
| 2884 | |
| 2885 | for (f = (lang_input_statement_type *) file_chain.head; |
| 2886 | f != (lang_input_statement_type *) NULL; |
| 2887 | f = (lang_input_statement_type *) f->next) |
| 2888 | { |
| 2889 | func (f); |
| 2890 | } |
| 2891 | } |
| 2892 | |
| 2893 | #if 0 |
| 2894 | |
| 2895 | /* Not used. */ |
| 2896 | |
| 2897 | void |
| 2898 | lang_for_each_input_section (func) |
| 2899 | void (*func) PARAMS ((bfd * ab, asection * as)); |
| 2900 | { |
| 2901 | lang_input_statement_type *f; |
| 2902 | |
| 2903 | for (f = (lang_input_statement_type *) file_chain.head; |
| 2904 | f != (lang_input_statement_type *) NULL; |
| 2905 | f = (lang_input_statement_type *) f->next) |
| 2906 | { |
| 2907 | asection *s; |
| 2908 | |
| 2909 | for (s = f->the_bfd->sections; |
| 2910 | s != (asection *) NULL; |
| 2911 | s = s->next) |
| 2912 | { |
| 2913 | func (f->the_bfd, s); |
| 2914 | } |
| 2915 | } |
| 2916 | } |
| 2917 | |
| 2918 | #endif |
| 2919 | |
| 2920 | void |
| 2921 | ldlang_add_file (entry) |
| 2922 | lang_input_statement_type * entry; |
| 2923 | { |
| 2924 | bfd **pp; |
| 2925 | |
| 2926 | lang_statement_append (&file_chain, |
| 2927 | (lang_statement_union_type *) entry, |
| 2928 | &entry->next); |
| 2929 | |
| 2930 | /* The BFD linker needs to have a list of all input BFDs involved in |
| 2931 | a link. */ |
| 2932 | ASSERT (entry->the_bfd->link_next == (bfd *) NULL); |
| 2933 | ASSERT (entry->the_bfd != output_bfd); |
| 2934 | for (pp = &link_info.input_bfds; |
| 2935 | *pp != (bfd *) NULL; |
| 2936 | pp = &(*pp)->link_next) |
| 2937 | ; |
| 2938 | *pp = entry->the_bfd; |
| 2939 | entry->the_bfd->usrdata = (PTR) entry; |
| 2940 | bfd_set_gp_size (entry->the_bfd, g_switch_value); |
| 2941 | |
| 2942 | /* Look through the sections and check for any which should not be |
| 2943 | included in the link. We need to do this now, so that we can |
| 2944 | notice when the backend linker tries to report multiple |
| 2945 | definition errors for symbols which are in sections we aren't |
| 2946 | going to link. FIXME: It might be better to entirely ignore |
| 2947 | symbols which are defined in sections which are going to be |
| 2948 | discarded. This would require modifying the backend linker for |
| 2949 | each backend which might set the SEC_LINK_ONCE flag. If we do |
| 2950 | this, we should probably handle SEC_EXCLUDE in the same way. */ |
| 2951 | |
| 2952 | bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) entry); |
| 2953 | } |
| 2954 | |
| 2955 | void |
| 2956 | lang_add_output (name, from_script) |
| 2957 | CONST char *name; |
| 2958 | int from_script; |
| 2959 | { |
| 2960 | /* Make -o on command line override OUTPUT in script. */ |
| 2961 | if (had_output_filename == false || !from_script) |
| 2962 | { |
| 2963 | output_filename = name; |
| 2964 | had_output_filename = true; |
| 2965 | } |
| 2966 | } |
| 2967 | |
| 2968 | |
| 2969 | static lang_output_section_statement_type *current_section; |
| 2970 | |
| 2971 | static int |
| 2972 | topower (x) |
| 2973 | int x; |
| 2974 | { |
| 2975 | unsigned int i = 1; |
| 2976 | int l; |
| 2977 | |
| 2978 | if (x < 0) |
| 2979 | return -1; |
| 2980 | |
| 2981 | for (l = 0; l < 32; l++) |
| 2982 | { |
| 2983 | if (i >= (unsigned int) x) |
| 2984 | return l; |
| 2985 | i <<= 1; |
| 2986 | } |
| 2987 | |
| 2988 | return 0; |
| 2989 | } |
| 2990 | |
| 2991 | void |
| 2992 | lang_enter_output_section_statement (output_section_statement_name, |
| 2993 | address_exp, sectype, block_value, |
| 2994 | align, subalign, ebase) |
| 2995 | const char *output_section_statement_name; |
| 2996 | etree_type * address_exp; |
| 2997 | enum section_type sectype; |
| 2998 | bfd_vma block_value; |
| 2999 | etree_type *align; |
| 3000 | etree_type *subalign; |
| 3001 | etree_type *ebase; |
| 3002 | { |
| 3003 | lang_output_section_statement_type *os; |
| 3004 | |
| 3005 | current_section = |
| 3006 | os = |
| 3007 | lang_output_section_statement_lookup (output_section_statement_name); |
| 3008 | |
| 3009 | |
| 3010 | |
| 3011 | /* Add this statement to tree */ |
| 3012 | /* add_statement(lang_output_section_statement_enum, |
| 3013 | output_section_statement);*/ |
| 3014 | /* Make next things chain into subchain of this */ |
| 3015 | |
| 3016 | if (os->addr_tree == |
| 3017 | (etree_type *) NULL) |
| 3018 | { |
| 3019 | os->addr_tree = |
| 3020 | address_exp; |
| 3021 | } |
| 3022 | os->sectype = sectype; |
| 3023 | if (sectype != noload_section) |
| 3024 | os->flags = SEC_NO_FLAGS; |
| 3025 | else |
| 3026 | os->flags = SEC_NEVER_LOAD; |
| 3027 | os->block_value = block_value ? block_value : 1; |
| 3028 | stat_ptr = &os->children; |
| 3029 | |
| 3030 | os->subsection_alignment = topower( |
| 3031 | exp_get_value_int(subalign, -1, |
| 3032 | "subsection alignment", |
| 3033 | 0)); |
| 3034 | os->section_alignment = topower( |
| 3035 | exp_get_value_int(align, -1, |
| 3036 | "section alignment", 0)); |
| 3037 | |
| 3038 | os->load_base = ebase; |
| 3039 | } |
| 3040 | |
| 3041 | |
| 3042 | void |
| 3043 | lang_final () |
| 3044 | { |
| 3045 | lang_output_statement_type *new = |
| 3046 | new_stat (lang_output_statement, stat_ptr); |
| 3047 | |
| 3048 | new->name = output_filename; |
| 3049 | } |
| 3050 | |
| 3051 | /* Reset the current counters in the regions */ |
| 3052 | static void |
| 3053 | reset_memory_regions () |
| 3054 | { |
| 3055 | lang_memory_region_type *p = lang_memory_region_list; |
| 3056 | |
| 3057 | for (p = lang_memory_region_list; |
| 3058 | p != (lang_memory_region_type *) NULL; |
| 3059 | p = p->next) |
| 3060 | { |
| 3061 | p->old_length = (bfd_size_type) (p->current - p->origin); |
| 3062 | p->current = p->origin; |
| 3063 | } |
| 3064 | } |
| 3065 | |
| 3066 | void |
| 3067 | lang_process () |
| 3068 | { |
| 3069 | lang_reasonable_defaults (); |
| 3070 | current_target = default_target; |
| 3071 | |
| 3072 | lang_for_each_statement (ldlang_open_output); /* Open the output file */ |
| 3073 | |
| 3074 | ldemul_create_output_section_statements (); |
| 3075 | |
| 3076 | /* Add to the hash table all undefineds on the command line */ |
| 3077 | lang_place_undefineds (); |
| 3078 | |
| 3079 | /* Create a bfd for each input file */ |
| 3080 | current_target = default_target; |
| 3081 | open_input_bfds (statement_list.head, false); |
| 3082 | |
| 3083 | ldemul_after_open (); |
| 3084 | |
| 3085 | /* Build all sets based on the information gathered from the input |
| 3086 | files. */ |
| 3087 | ldctor_build_sets (); |
| 3088 | |
| 3089 | /* Size up the common data */ |
| 3090 | lang_common (); |
| 3091 | |
| 3092 | /* Run through the contours of the script and attatch input sections |
| 3093 | to the correct output sections |
| 3094 | */ |
| 3095 | map_input_to_output_sections (statement_list.head, (char *) NULL, |
| 3096 | (lang_output_section_statement_type *) NULL); |
| 3097 | |
| 3098 | |
| 3099 | /* Find any sections not attatched explicitly and handle them */ |
| 3100 | lang_place_orphans (); |
| 3101 | |
| 3102 | ldemul_before_allocation (); |
| 3103 | |
| 3104 | /* We must record the program headers before we try to fix the |
| 3105 | section positions, since they will affect SIZEOF_HEADERS. */ |
| 3106 | lang_record_phdrs (); |
| 3107 | |
| 3108 | /* Now run around and relax if we can */ |
| 3109 | if (command_line.relax) |
| 3110 | { |
| 3111 | /* First time round is a trial run to get the 'worst case' |
| 3112 | addresses of the objects if there was no relaxing. */ |
| 3113 | lang_size_sections (statement_list.head, |
| 3114 | abs_output_section, |
| 3115 | &(statement_list.head), 0, (bfd_vma) 0, false); |
| 3116 | |
| 3117 | /* Keep relaxing until bfd_relax_section gives up. */ |
| 3118 | do |
| 3119 | { |
| 3120 | reset_memory_regions (); |
| 3121 | |
| 3122 | relax_again = false; |
| 3123 | |
| 3124 | /* Do all the assignments with our current guesses as to |
| 3125 | section sizes. */ |
| 3126 | lang_do_assignments (statement_list.head, |
| 3127 | abs_output_section, |
| 3128 | (fill_type) 0, (bfd_vma) 0); |
| 3129 | |
| 3130 | /* Perform another relax pass - this time we know where the |
| 3131 | globals are, so can make better guess. */ |
| 3132 | lang_size_sections (statement_list.head, |
| 3133 | abs_output_section, |
| 3134 | &(statement_list.head), 0, (bfd_vma) 0, true); |
| 3135 | } |
| 3136 | while (relax_again); |
| 3137 | } |
| 3138 | else |
| 3139 | { |
| 3140 | /* Size up the sections. */ |
| 3141 | lang_size_sections (statement_list.head, |
| 3142 | abs_output_section, |
| 3143 | &(statement_list.head), 0, (bfd_vma) 0, false); |
| 3144 | } |
| 3145 | |
| 3146 | /* See if anything special should be done now we know how big |
| 3147 | everything is. */ |
| 3148 | ldemul_after_allocation (); |
| 3149 | |
| 3150 | /* Fix any .startof. or .sizeof. symbols. */ |
| 3151 | lang_set_startof (); |
| 3152 | |
| 3153 | /* Do all the assignments, now that we know the final restingplaces |
| 3154 | of all the symbols */ |
| 3155 | |
| 3156 | lang_do_assignments (statement_list.head, |
| 3157 | abs_output_section, |
| 3158 | (fill_type) 0, (bfd_vma) 0); |
| 3159 | |
| 3160 | /* Make sure that we're not mixing architectures */ |
| 3161 | |
| 3162 | lang_check (); |
| 3163 | |
| 3164 | /* Final stuffs */ |
| 3165 | |
| 3166 | ldemul_finish (); |
| 3167 | lang_finish (); |
| 3168 | } |
| 3169 | |
| 3170 | /* EXPORTED TO YACC */ |
| 3171 | |
| 3172 | void |
| 3173 | lang_add_wild (section_name, filename) |
| 3174 | CONST char *CONST section_name; |
| 3175 | CONST char *CONST filename; |
| 3176 | { |
| 3177 | lang_wild_statement_type *new = new_stat (lang_wild_statement, |
| 3178 | stat_ptr); |
| 3179 | |
| 3180 | if (section_name != (char *) NULL && strcmp (section_name, "COMMON") == 0) |
| 3181 | { |
| 3182 | placed_commons = true; |
| 3183 | } |
| 3184 | if (filename != (char *) NULL) |
| 3185 | { |
| 3186 | lang_has_input_file = true; |
| 3187 | } |
| 3188 | new->section_name = section_name; |
| 3189 | new->filename = filename; |
| 3190 | lang_list_init (&new->children); |
| 3191 | } |
| 3192 | |
| 3193 | void |
| 3194 | lang_section_start (name, address) |
| 3195 | CONST char *name; |
| 3196 | etree_type * address; |
| 3197 | { |
| 3198 | lang_address_statement_type *ad = new_stat (lang_address_statement, stat_ptr); |
| 3199 | |
| 3200 | ad->section_name = name; |
| 3201 | ad->address = address; |
| 3202 | } |
| 3203 | |
| 3204 | /* Set the start symbol to NAME. CMDLINE is nonzero if this is called |
| 3205 | because of a -e argument on the command line, or zero if this is |
| 3206 | called by ENTRY in a linker script. Command line arguments take |
| 3207 | precedence. */ |
| 3208 | |
| 3209 | /* WINDOWS_NT. When an entry point has been specified, we will also force |
| 3210 | this symbol to be defined by calling ldlang_add_undef (equivalent to |
| 3211 | having switch -u entry_name on the command line). The reason we do |
| 3212 | this is so that the user doesn't have to because they would have to use |
| 3213 | the -u switch if they were specifying an entry point other than |
| 3214 | _mainCRTStartup. Specifically, if creating a windows application, entry |
| 3215 | point _WinMainCRTStartup must be specified. |
| 3216 | What I have found for non console applications (entry not _mainCRTStartup) |
| 3217 | is that the .obj that contains mainCRTStartup is brought in since it is |
| 3218 | the first encountered in libc.lib and it has other symbols in it which will |
| 3219 | be pulled in by the link process. To avoid this, adding -u with the entry |
| 3220 | point name specified forces the correct .obj to be used. We can avoid |
| 3221 | making the user do this by always adding the entry point name as an |
| 3222 | undefined symbol. */ |
| 3223 | |
| 3224 | void |
| 3225 | lang_add_entry (name, cmdline) |
| 3226 | CONST char *name; |
| 3227 | boolean cmdline; |
| 3228 | { |
| 3229 | if (entry_symbol == NULL |
| 3230 | || cmdline |
| 3231 | || ! entry_from_cmdline) |
| 3232 | { |
| 3233 | entry_symbol = name; |
| 3234 | entry_from_cmdline = cmdline; |
| 3235 | } |
| 3236 | #if 0 |
| 3237 | /* don't do this yet. It seems to work (the executables run), but the |
| 3238 | image created is very different from what I was getting before indicating |
| 3239 | that something else is being pulled in. When everything else is working, |
| 3240 | then try to put this back in to see if it will do the right thing for |
| 3241 | other more complicated applications */ |
| 3242 | ldlang_add_undef (name); |
| 3243 | #endif |
| 3244 | } |
| 3245 | |
| 3246 | void |
| 3247 | lang_add_target (name) |
| 3248 | CONST char *name; |
| 3249 | { |
| 3250 | lang_target_statement_type *new = new_stat (lang_target_statement, |
| 3251 | stat_ptr); |
| 3252 | |
| 3253 | new->target = name; |
| 3254 | |
| 3255 | } |
| 3256 | |
| 3257 | void |
| 3258 | lang_add_map (name) |
| 3259 | CONST char *name; |
| 3260 | { |
| 3261 | while (*name) |
| 3262 | { |
| 3263 | switch (*name) |
| 3264 | { |
| 3265 | case 'F': |
| 3266 | map_option_f = true; |
| 3267 | break; |
| 3268 | } |
| 3269 | name++; |
| 3270 | } |
| 3271 | } |
| 3272 | |
| 3273 | void |
| 3274 | lang_add_fill (exp) |
| 3275 | int exp; |
| 3276 | { |
| 3277 | lang_fill_statement_type *new = new_stat (lang_fill_statement, |
| 3278 | stat_ptr); |
| 3279 | |
| 3280 | new->fill = exp; |
| 3281 | } |
| 3282 | |
| 3283 | void |
| 3284 | lang_add_data (type, exp) |
| 3285 | int type; |
| 3286 | union etree_union *exp; |
| 3287 | { |
| 3288 | |
| 3289 | lang_data_statement_type *new = new_stat (lang_data_statement, |
| 3290 | stat_ptr); |
| 3291 | |
| 3292 | new->exp = exp; |
| 3293 | new->type = type; |
| 3294 | |
| 3295 | } |
| 3296 | |
| 3297 | /* Create a new reloc statement. RELOC is the BFD relocation type to |
| 3298 | generate. HOWTO is the corresponding howto structure (we could |
| 3299 | look this up, but the caller has already done so). SECTION is the |
| 3300 | section to generate a reloc against, or NAME is the name of the |
| 3301 | symbol to generate a reloc against. Exactly one of SECTION and |
| 3302 | NAME must be NULL. ADDEND is an expression for the addend. */ |
| 3303 | |
| 3304 | void |
| 3305 | lang_add_reloc (reloc, howto, section, name, addend) |
| 3306 | bfd_reloc_code_real_type reloc; |
| 3307 | reloc_howto_type *howto; |
| 3308 | asection *section; |
| 3309 | const char *name; |
| 3310 | union etree_union *addend; |
| 3311 | { |
| 3312 | lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr); |
| 3313 | |
| 3314 | p->reloc = reloc; |
| 3315 | p->howto = howto; |
| 3316 | p->section = section; |
| 3317 | p->name = name; |
| 3318 | p->addend_exp = addend; |
| 3319 | |
| 3320 | p->addend_value = 0; |
| 3321 | p->output_section = NULL; |
| 3322 | p->output_vma = 0; |
| 3323 | } |
| 3324 | |
| 3325 | void |
| 3326 | lang_add_assignment (exp) |
| 3327 | etree_type * exp; |
| 3328 | { |
| 3329 | lang_assignment_statement_type *new = new_stat (lang_assignment_statement, |
| 3330 | stat_ptr); |
| 3331 | |
| 3332 | new->exp = exp; |
| 3333 | } |
| 3334 | |
| 3335 | void |
| 3336 | lang_add_attribute (attribute) |
| 3337 | enum statement_enum attribute; |
| 3338 | { |
| 3339 | new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr); |
| 3340 | } |
| 3341 | |
| 3342 | void |
| 3343 | lang_startup (name) |
| 3344 | CONST char *name; |
| 3345 | { |
| 3346 | if (startup_file != (char *) NULL) |
| 3347 | { |
| 3348 | einfo ("%P%Fmultiple STARTUP files\n"); |
| 3349 | } |
| 3350 | first_file->filename = name; |
| 3351 | first_file->local_sym_name = name; |
| 3352 | first_file->real = true; |
| 3353 | |
| 3354 | startup_file = name; |
| 3355 | } |
| 3356 | |
| 3357 | void |
| 3358 | lang_float (maybe) |
| 3359 | boolean maybe; |
| 3360 | { |
| 3361 | lang_float_flag = maybe; |
| 3362 | } |
| 3363 | |
| 3364 | void |
| 3365 | lang_leave_output_section_statement (fill, memspec, phdrs) |
| 3366 | bfd_vma fill; |
| 3367 | const char *memspec; |
| 3368 | struct lang_output_section_phdr_list *phdrs; |
| 3369 | { |
| 3370 | current_section->fill = fill; |
| 3371 | current_section->region = lang_memory_region_lookup (memspec); |
| 3372 | current_section->phdrs = phdrs; |
| 3373 | stat_ptr = &statement_list; |
| 3374 | } |
| 3375 | |
| 3376 | /* |
| 3377 | Create an absolute symbol with the given name with the value of the |
| 3378 | address of first byte of the section named. |
| 3379 | |
| 3380 | If the symbol already exists, then do nothing. |
| 3381 | */ |
| 3382 | void |
| 3383 | lang_abs_symbol_at_beginning_of (secname, name) |
| 3384 | const char *secname; |
| 3385 | const char *name; |
| 3386 | { |
| 3387 | struct bfd_link_hash_entry *h; |
| 3388 | |
| 3389 | h = bfd_link_hash_lookup (link_info.hash, name, true, true, true); |
| 3390 | if (h == (struct bfd_link_hash_entry *) NULL) |
| 3391 | einfo ("%P%F: bfd_link_hash_lookup failed: %E\n"); |
| 3392 | |
| 3393 | if (h->type == bfd_link_hash_new |
| 3394 | || h->type == bfd_link_hash_undefined) |
| 3395 | { |
| 3396 | asection *sec; |
| 3397 | |
| 3398 | h->type = bfd_link_hash_defined; |
| 3399 | |
| 3400 | sec = bfd_get_section_by_name (output_bfd, secname); |
| 3401 | if (sec == (asection *) NULL) |
| 3402 | h->u.def.value = 0; |
| 3403 | else |
| 3404 | h->u.def.value = bfd_get_section_vma (output_bfd, sec); |
| 3405 | |
| 3406 | h->u.def.section = bfd_abs_section_ptr; |
| 3407 | } |
| 3408 | } |
| 3409 | |
| 3410 | /* |
| 3411 | Create an absolute symbol with the given name with the value of the |
| 3412 | address of the first byte after the end of the section named. |
| 3413 | |
| 3414 | If the symbol already exists, then do nothing. |
| 3415 | */ |
| 3416 | void |
| 3417 | lang_abs_symbol_at_end_of (secname, name) |
| 3418 | const char *secname; |
| 3419 | const char *name; |
| 3420 | { |
| 3421 | struct bfd_link_hash_entry *h; |
| 3422 | |
| 3423 | h = bfd_link_hash_lookup (link_info.hash, name, true, true, true); |
| 3424 | if (h == (struct bfd_link_hash_entry *) NULL) |
| 3425 | einfo ("%P%F: bfd_link_hash_lookup failed: %E\n"); |
| 3426 | |
| 3427 | if (h->type == bfd_link_hash_new |
| 3428 | || h->type == bfd_link_hash_undefined) |
| 3429 | { |
| 3430 | asection *sec; |
| 3431 | |
| 3432 | h->type = bfd_link_hash_defined; |
| 3433 | |
| 3434 | sec = bfd_get_section_by_name (output_bfd, secname); |
| 3435 | if (sec == (asection *) NULL) |
| 3436 | h->u.def.value = 0; |
| 3437 | else |
| 3438 | h->u.def.value = (bfd_get_section_vma (output_bfd, sec) |
| 3439 | + bfd_section_size (output_bfd, sec)); |
| 3440 | |
| 3441 | h->u.def.section = bfd_abs_section_ptr; |
| 3442 | } |
| 3443 | } |
| 3444 | |
| 3445 | void |
| 3446 | lang_statement_append (list, element, field) |
| 3447 | lang_statement_list_type * list; |
| 3448 | lang_statement_union_type * element; |
| 3449 | lang_statement_union_type ** field; |
| 3450 | { |
| 3451 | *(list->tail) = element; |
| 3452 | list->tail = field; |
| 3453 | } |
| 3454 | |
| 3455 | /* Set the output format type. -oformat overrides scripts. */ |
| 3456 | |
| 3457 | void |
| 3458 | lang_add_output_format (format, big, little, from_script) |
| 3459 | const char *format; |
| 3460 | const char *big; |
| 3461 | const char *little; |
| 3462 | int from_script; |
| 3463 | { |
| 3464 | if (output_target == NULL || !from_script) |
| 3465 | { |
| 3466 | if (command_line.endian == ENDIAN_BIG |
| 3467 | && big != NULL) |
| 3468 | format = big; |
| 3469 | else if (command_line.endian == ENDIAN_LITTLE |
| 3470 | && little != NULL) |
| 3471 | format = little; |
| 3472 | |
| 3473 | output_target = format; |
| 3474 | } |
| 3475 | } |
| 3476 | |
| 3477 | /* Enter a group. This creates a new lang_group_statement, and sets |
| 3478 | stat_ptr to build new statements within the group. */ |
| 3479 | |
| 3480 | void |
| 3481 | lang_enter_group () |
| 3482 | { |
| 3483 | lang_group_statement_type *g; |
| 3484 | |
| 3485 | g = new_stat (lang_group_statement, stat_ptr); |
| 3486 | lang_list_init (&g->children); |
| 3487 | stat_ptr = &g->children; |
| 3488 | } |
| 3489 | |
| 3490 | /* Leave a group. This just resets stat_ptr to start writing to the |
| 3491 | regular list of statements again. Note that this will not work if |
| 3492 | groups can occur inside anything else which can adjust stat_ptr, |
| 3493 | but currently they can't. */ |
| 3494 | |
| 3495 | void |
| 3496 | lang_leave_group () |
| 3497 | { |
| 3498 | stat_ptr = &statement_list; |
| 3499 | } |
| 3500 | |
| 3501 | /* Add a new program header. This is called for each entry in a PHDRS |
| 3502 | command in a linker script. */ |
| 3503 | |
| 3504 | void |
| 3505 | lang_new_phdr (name, type, filehdr, phdrs, at, flags) |
| 3506 | const char *name; |
| 3507 | etree_type *type; |
| 3508 | boolean filehdr; |
| 3509 | boolean phdrs; |
| 3510 | etree_type *at; |
| 3511 | etree_type *flags; |
| 3512 | { |
| 3513 | struct lang_phdr *n, **pp; |
| 3514 | |
| 3515 | n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr)); |
| 3516 | n->next = NULL; |
| 3517 | n->name = name; |
| 3518 | n->type = exp_get_value_int (type, 0, "program header type", |
| 3519 | lang_final_phase_enum); |
| 3520 | n->filehdr = filehdr; |
| 3521 | n->phdrs = phdrs; |
| 3522 | n->at = at; |
| 3523 | n->flags = flags; |
| 3524 | |
| 3525 | for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next) |
| 3526 | ; |
| 3527 | *pp = n; |
| 3528 | } |
| 3529 | |
| 3530 | /* Record the program header information in the output BFD. FIXME: We |
| 3531 | should not be calling an ELF specific function here. */ |
| 3532 | |
| 3533 | static void |
| 3534 | lang_record_phdrs () |
| 3535 | { |
| 3536 | unsigned int alc; |
| 3537 | asection **secs; |
| 3538 | struct lang_output_section_phdr_list *last; |
| 3539 | struct lang_phdr *l; |
| 3540 | lang_statement_union_type *u; |
| 3541 | |
| 3542 | alc = 10; |
| 3543 | secs = (asection **) xmalloc (alc * sizeof (asection *)); |
| 3544 | last = NULL; |
| 3545 | for (l = lang_phdr_list; l != NULL; l = l->next) |
| 3546 | { |
| 3547 | unsigned int c; |
| 3548 | flagword flags; |
| 3549 | bfd_vma at; |
| 3550 | |
| 3551 | c = 0; |
| 3552 | for (u = lang_output_section_statement.head; |
| 3553 | u != NULL; |
| 3554 | u = u->output_section_statement.next) |
| 3555 | { |
| 3556 | lang_output_section_statement_type *os; |
| 3557 | struct lang_output_section_phdr_list *pl; |
| 3558 | |
| 3559 | os = &u->output_section_statement; |
| 3560 | |
| 3561 | pl = os->phdrs; |
| 3562 | if (pl != NULL) |
| 3563 | last = pl; |
| 3564 | else |
| 3565 | { |
| 3566 | if (os->sectype == noload_section |
| 3567 | || os->bfd_section == NULL |
| 3568 | || (os->bfd_section->flags & SEC_ALLOC) == 0) |
| 3569 | continue; |
| 3570 | pl = last; |
| 3571 | } |
| 3572 | |
| 3573 | if (os->bfd_section == NULL) |
| 3574 | continue; |
| 3575 | |
| 3576 | for (; pl != NULL; pl = pl->next) |
| 3577 | { |
| 3578 | if (strcmp (pl->name, l->name) == 0) |
| 3579 | { |
| 3580 | if (c >= alc) |
| 3581 | { |
| 3582 | alc *= 2; |
| 3583 | secs = ((asection **) |
| 3584 | xrealloc (secs, alc * sizeof (asection *))); |
| 3585 | } |
| 3586 | secs[c] = os->bfd_section; |
| 3587 | ++c; |
| 3588 | pl->used = true; |
| 3589 | } |
| 3590 | } |
| 3591 | } |
| 3592 | |
| 3593 | if (l->flags == NULL) |
| 3594 | flags = 0; |
| 3595 | else |
| 3596 | flags = exp_get_vma (l->flags, 0, "phdr flags", |
| 3597 | lang_final_phase_enum); |
| 3598 | |
| 3599 | if (l->at == NULL) |
| 3600 | at = 0; |
| 3601 | else |
| 3602 | at = exp_get_vma (l->at, 0, "phdr load address", |
| 3603 | lang_final_phase_enum); |
| 3604 | |
| 3605 | if (! bfd_record_phdr (output_bfd, l->type, |
| 3606 | l->flags == NULL ? false : true, |
| 3607 | flags, |
| 3608 | l->at == NULL ? false : true, |
| 3609 | at, l->filehdr, l->phdrs, c, secs)) |
| 3610 | einfo ("%F%P: bfd_record_phdr failed: %E\n"); |
| 3611 | } |
| 3612 | |
| 3613 | free (secs); |
| 3614 | |
| 3615 | /* Make sure all the phdr assignments succeeded. */ |
| 3616 | for (u = lang_output_section_statement.head; |
| 3617 | u != NULL; |
| 3618 | u = u->output_section_statement.next) |
| 3619 | { |
| 3620 | struct lang_output_section_phdr_list *pl; |
| 3621 | |
| 3622 | if (u->output_section_statement.bfd_section == NULL) |
| 3623 | continue; |
| 3624 | |
| 3625 | for (pl = u->output_section_statement.phdrs; |
| 3626 | pl != NULL; |
| 3627 | pl = pl->next) |
| 3628 | if (! pl->used && strcmp (pl->name, "NONE") != 0) |
| 3629 | einfo ("%X%P: section `%s' assigned to non-existent phdr `%s'\n", |
| 3630 | u->output_section_statement.name, pl->name); |
| 3631 | } |
| 3632 | } |
| 3633 | |
| 3634 | /* Record a list of sections which may not be cross referenced. */ |
| 3635 | |
| 3636 | void |
| 3637 | lang_add_nocrossref (l) |
| 3638 | struct lang_nocrossref *l; |
| 3639 | { |
| 3640 | struct lang_nocrossrefs *n; |
| 3641 | |
| 3642 | n = (struct lang_nocrossrefs *) xmalloc (sizeof *n); |
| 3643 | n->next = nocrossref_list; |
| 3644 | n->list = l; |
| 3645 | nocrossref_list = n; |
| 3646 | |
| 3647 | /* Set notice_all so that we get informed about all symbols. */ |
| 3648 | link_info.notice_all = true; |
| 3649 | } |
| 3650 | \f |
| 3651 | /* Overlay handling. We handle overlays with some static variables. */ |
| 3652 | |
| 3653 | /* The overlay virtual address. */ |
| 3654 | static etree_type *overlay_vma; |
| 3655 | |
| 3656 | /* The overlay load address. */ |
| 3657 | static etree_type *overlay_lma; |
| 3658 | |
| 3659 | /* Whether nocrossrefs is set for this overlay. */ |
| 3660 | static int overlay_nocrossrefs; |
| 3661 | |
| 3662 | /* An expression for the maximum section size seen so far. */ |
| 3663 | static etree_type *overlay_max; |
| 3664 | |
| 3665 | /* A list of all the sections in this overlay. */ |
| 3666 | |
| 3667 | struct overlay_list |
| 3668 | { |
| 3669 | struct overlay_list *next; |
| 3670 | lang_output_section_statement_type *os; |
| 3671 | }; |
| 3672 | |
| 3673 | static struct overlay_list *overlay_list; |
| 3674 | |
| 3675 | /* Start handling an overlay. */ |
| 3676 | |
| 3677 | void |
| 3678 | lang_enter_overlay (vma_expr, lma_expr, nocrossrefs) |
| 3679 | etree_type *vma_expr; |
| 3680 | etree_type *lma_expr; |
| 3681 | int nocrossrefs; |
| 3682 | { |
| 3683 | /* The grammar should prevent nested overlays from occurring. */ |
| 3684 | ASSERT (overlay_vma == NULL |
| 3685 | && overlay_lma == NULL |
| 3686 | && overlay_list == NULL |
| 3687 | && overlay_max == NULL); |
| 3688 | |
| 3689 | overlay_vma = vma_expr; |
| 3690 | overlay_lma = lma_expr; |
| 3691 | overlay_nocrossrefs = nocrossrefs; |
| 3692 | } |
| 3693 | |
| 3694 | /* Start a section in an overlay. We handle this by calling |
| 3695 | lang_enter_output_section_statement with the correct VMA and LMA. */ |
| 3696 | |
| 3697 | void |
| 3698 | lang_enter_overlay_section (name) |
| 3699 | const char *name; |
| 3700 | { |
| 3701 | struct overlay_list *n; |
| 3702 | etree_type *size; |
| 3703 | |
| 3704 | lang_enter_output_section_statement (name, overlay_vma, normal_section, |
| 3705 | 0, 0, 0, overlay_lma); |
| 3706 | |
| 3707 | /* If this is the first section, then base the VMA and LMA of future |
| 3708 | sections on this one. This will work correctly even if `.' is |
| 3709 | used in the addresses. */ |
| 3710 | if (overlay_list == NULL) |
| 3711 | { |
| 3712 | overlay_vma = exp_nameop (ADDR, name); |
| 3713 | overlay_lma = exp_nameop (LOADADDR, name); |
| 3714 | } |
| 3715 | |
| 3716 | /* Remember the section. */ |
| 3717 | n = (struct overlay_list *) xmalloc (sizeof *n); |
| 3718 | n->os = current_section; |
| 3719 | n->next = overlay_list; |
| 3720 | overlay_list = n; |
| 3721 | |
| 3722 | size = exp_nameop (SIZEOF, name); |
| 3723 | |
| 3724 | /* Adjust the LMA for the next section. */ |
| 3725 | overlay_lma = exp_binop ('+', overlay_lma, size); |
| 3726 | |
| 3727 | /* Arrange to work out the maximum section end address. */ |
| 3728 | if (overlay_max == NULL) |
| 3729 | overlay_max = size; |
| 3730 | else |
| 3731 | overlay_max = exp_binop (MAX, overlay_max, size); |
| 3732 | } |
| 3733 | |
| 3734 | /* Finish a section in an overlay. There isn't any special to do |
| 3735 | here. */ |
| 3736 | |
| 3737 | void |
| 3738 | lang_leave_overlay_section (fill, phdrs) |
| 3739 | bfd_vma fill; |
| 3740 | struct lang_output_section_phdr_list *phdrs; |
| 3741 | { |
| 3742 | const char *name; |
| 3743 | char *clean, *s2; |
| 3744 | const char *s1; |
| 3745 | char *buf; |
| 3746 | |
| 3747 | name = current_section->name; |
| 3748 | |
| 3749 | lang_leave_output_section_statement (fill, "*default*", phdrs); |
| 3750 | |
| 3751 | /* Define the magic symbols. */ |
| 3752 | |
| 3753 | clean = xmalloc (strlen (name) + 1); |
| 3754 | s2 = clean; |
| 3755 | for (s1 = name; *s1 != '\0'; s1++) |
| 3756 | if (isalnum (*s1) || *s1 == '_') |
| 3757 | *s2++ = *s1; |
| 3758 | *s2 = '\0'; |
| 3759 | |
| 3760 | buf = xmalloc (strlen (clean) + sizeof "__load_start_"); |
| 3761 | sprintf (buf, "__load_start_%s", clean); |
| 3762 | lang_add_assignment (exp_assop ('=', buf, |
| 3763 | exp_nameop (LOADADDR, name))); |
| 3764 | |
| 3765 | buf = xmalloc (strlen (clean) + sizeof "__load_stop_"); |
| 3766 | sprintf (buf, "__load_stop_%s", clean); |
| 3767 | lang_add_assignment (exp_assop ('=', buf, |
| 3768 | exp_binop ('+', |
| 3769 | exp_nameop (LOADADDR, name), |
| 3770 | exp_nameop (SIZEOF, name)))); |
| 3771 | |
| 3772 | free (clean); |
| 3773 | } |
| 3774 | |
| 3775 | /* Finish an overlay. If there are any overlay wide settings, this |
| 3776 | looks through all the sections in the overlay and sets them. */ |
| 3777 | |
| 3778 | void |
| 3779 | lang_leave_overlay (fill, memspec, phdrs) |
| 3780 | bfd_vma fill; |
| 3781 | const char *memspec; |
| 3782 | struct lang_output_section_phdr_list *phdrs; |
| 3783 | { |
| 3784 | lang_memory_region_type *region; |
| 3785 | struct overlay_list *l; |
| 3786 | struct lang_nocrossref *nocrossref; |
| 3787 | |
| 3788 | if (memspec == NULL) |
| 3789 | region = NULL; |
| 3790 | else |
| 3791 | region = lang_memory_region_lookup (memspec); |
| 3792 | |
| 3793 | nocrossref = NULL; |
| 3794 | |
| 3795 | l = overlay_list; |
| 3796 | while (l != NULL) |
| 3797 | { |
| 3798 | struct overlay_list *next; |
| 3799 | |
| 3800 | if (fill != 0 && l->os->fill == 0) |
| 3801 | l->os->fill = fill; |
| 3802 | if (region != NULL && l->os->region == NULL) |
| 3803 | l->os->region = region; |
| 3804 | if (phdrs != NULL && l->os->phdrs == NULL) |
| 3805 | l->os->phdrs = phdrs; |
| 3806 | |
| 3807 | if (overlay_nocrossrefs) |
| 3808 | { |
| 3809 | struct lang_nocrossref *nc; |
| 3810 | |
| 3811 | nc = (struct lang_nocrossref *) xmalloc (sizeof *nc); |
| 3812 | nc->name = l->os->name; |
| 3813 | nc->next = nocrossref; |
| 3814 | nocrossref = nc; |
| 3815 | } |
| 3816 | |
| 3817 | next = l->next; |
| 3818 | free (l); |
| 3819 | l = next; |
| 3820 | } |
| 3821 | |
| 3822 | if (nocrossref != NULL) |
| 3823 | lang_add_nocrossref (nocrossref); |
| 3824 | |
| 3825 | /* Update . for the end of the overlay. */ |
| 3826 | lang_add_assignment (exp_assop ('=', ".", |
| 3827 | exp_binop ('+', overlay_vma, overlay_max))); |
| 3828 | |
| 3829 | overlay_vma = NULL; |
| 3830 | overlay_lma = NULL; |
| 3831 | overlay_nocrossrefs = 0; |
| 3832 | overlay_list = NULL; |
| 3833 | overlay_max = NULL; |
| 3834 | } |
| 3835 | \f |
| 3836 | /* Version handling. This is only useful for ELF. */ |
| 3837 | |
| 3838 | /* This global variable holds the version tree that we build. */ |
| 3839 | |
| 3840 | struct bfd_elf_version_tree *lang_elf_version_info; |
| 3841 | |
| 3842 | /* This is called for each variable name or match expression. */ |
| 3843 | |
| 3844 | struct bfd_elf_version_expr * |
| 3845 | lang_new_vers_regex (orig, new) |
| 3846 | struct bfd_elf_version_expr *orig; |
| 3847 | const char *new; |
| 3848 | { |
| 3849 | struct bfd_elf_version_expr *ret; |
| 3850 | |
| 3851 | ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret); |
| 3852 | ret->next = orig; |
| 3853 | ret->match = new; |
| 3854 | return ret; |
| 3855 | } |
| 3856 | |
| 3857 | /* This is called for each set of variable names and match |
| 3858 | expressions. */ |
| 3859 | |
| 3860 | struct bfd_elf_version_tree * |
| 3861 | lang_new_vers_node (globals, locals) |
| 3862 | struct bfd_elf_version_expr *globals; |
| 3863 | struct bfd_elf_version_expr *locals; |
| 3864 | { |
| 3865 | struct bfd_elf_version_tree *ret; |
| 3866 | |
| 3867 | ret = (struct bfd_elf_version_tree *) xmalloc (sizeof *ret); |
| 3868 | ret->next = NULL; |
| 3869 | ret->name = NULL; |
| 3870 | ret->vernum = 0; |
| 3871 | ret->globals = globals; |
| 3872 | ret->locals = locals; |
| 3873 | ret->deps = NULL; |
| 3874 | ret->name_indx = (unsigned int) -1; |
| 3875 | ret->used = 0; |
| 3876 | return ret; |
| 3877 | } |
| 3878 | |
| 3879 | /* This static variable keeps track of version indices. */ |
| 3880 | |
| 3881 | static int version_index; |
| 3882 | |
| 3883 | /* This is called when we know the name and dependencies of the |
| 3884 | version. */ |
| 3885 | |
| 3886 | void |
| 3887 | lang_register_vers_node (name, version, deps) |
| 3888 | const char *name; |
| 3889 | struct bfd_elf_version_tree *version; |
| 3890 | struct bfd_elf_version_deps *deps; |
| 3891 | { |
| 3892 | struct bfd_elf_version_tree *t, **pp; |
| 3893 | struct bfd_elf_version_expr *e1; |
| 3894 | |
| 3895 | /* Make sure this node has a unique name. */ |
| 3896 | for (t = lang_elf_version_info; t != NULL; t = t->next) |
| 3897 | if (strcmp (t->name, name) == 0) |
| 3898 | einfo ("%X%P: duplicate version tag `%s'\n", name); |
| 3899 | |
| 3900 | /* Check the global and local match names, and make sure there |
| 3901 | aren't any duplicates. */ |
| 3902 | |
| 3903 | for (e1 = version->globals; e1 != NULL; e1 = e1->next) |
| 3904 | { |
| 3905 | for (t = lang_elf_version_info; t != NULL; t = t->next) |
| 3906 | { |
| 3907 | struct bfd_elf_version_expr *e2; |
| 3908 | |
| 3909 | for (e2 = t->globals; e2 != NULL; e2 = e2->next) |
| 3910 | if (strcmp (e1->match, e2->match) == 0) |
| 3911 | einfo ("%X%P: duplicate expression `%s' in version information\n", |
| 3912 | e1->match); |
| 3913 | |
| 3914 | for (e2 = t->locals; e2 != NULL; e2 = e2->next) |
| 3915 | if (strcmp (e1->match, e2->match) == 0) |
| 3916 | einfo ("%X%P: duplicate expression `%s' in version information\n", |
| 3917 | e1->match); |
| 3918 | } |
| 3919 | } |
| 3920 | |
| 3921 | for (e1 = version->locals; e1 != NULL; e1 = e1->next) |
| 3922 | { |
| 3923 | for (t = lang_elf_version_info; t != NULL; t = t->next) |
| 3924 | { |
| 3925 | struct bfd_elf_version_expr *e2; |
| 3926 | |
| 3927 | for (e2 = t->globals; e2 != NULL; e2 = e2->next) |
| 3928 | if (strcmp (e1->match, e2->match) == 0) |
| 3929 | einfo ("%X%P: duplicate expression `%s' in version information\n", |
| 3930 | e1->match); |
| 3931 | |
| 3932 | for (e2 = t->locals; e2 != NULL; e2 = e2->next) |
| 3933 | if (strcmp (e1->match, e2->match) == 0) |
| 3934 | einfo ("%X%P: duplicate expression `%s' in version information\n", |
| 3935 | e1->match); |
| 3936 | } |
| 3937 | } |
| 3938 | |
| 3939 | version->deps = deps; |
| 3940 | version->name = name; |
| 3941 | ++version_index; |
| 3942 | version->vernum = version_index; |
| 3943 | |
| 3944 | for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next) |
| 3945 | ; |
| 3946 | *pp = version; |
| 3947 | } |
| 3948 | |
| 3949 | /* This is called when we see a version dependency. */ |
| 3950 | |
| 3951 | struct bfd_elf_version_deps * |
| 3952 | lang_add_vers_depend (list, name) |
| 3953 | struct bfd_elf_version_deps *list; |
| 3954 | const char *name; |
| 3955 | { |
| 3956 | struct bfd_elf_version_deps *ret; |
| 3957 | struct bfd_elf_version_tree *t; |
| 3958 | |
| 3959 | ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret); |
| 3960 | ret->next = list; |
| 3961 | |
| 3962 | for (t = lang_elf_version_info; t != NULL; t = t->next) |
| 3963 | { |
| 3964 | if (strcmp (t->name, name) == 0) |
| 3965 | { |
| 3966 | ret->version_needed = t; |
| 3967 | return ret; |
| 3968 | } |
| 3969 | } |
| 3970 | |
| 3971 | einfo ("%X%P: unable to find version dependency `%s'\n", name); |
| 3972 | |
| 3973 | return ret; |
| 3974 | } |