| 1 | /* BFD back-end for oasys objects. |
| 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2001 |
| 3 | Free Software Foundation, Inc. |
| 4 | Written by Steve Chamberlain of Cygnus Support, <sac@cygnus.com>. |
| 5 | |
| 6 | This file is part of BFD, the Binary File Descriptor library. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #define UNDERSCORE_HACK 1 |
| 23 | #include "bfd.h" |
| 24 | #include "sysdep.h" |
| 25 | #include <ctype.h> |
| 26 | #include "libbfd.h" |
| 27 | #include "oasys.h" |
| 28 | #include "liboasys.h" |
| 29 | |
| 30 | static boolean oasys_slurp_section_data PARAMS ((bfd * const)); |
| 31 | static boolean oasys_read_record PARAMS ((bfd *, oasys_record_union_type *)); |
| 32 | static boolean oasys_write_sections PARAMS ((bfd *)); |
| 33 | static boolean oasys_write_record |
| 34 | PARAMS ((bfd *, oasys_record_enum_type, oasys_record_union_type *, size_t)); |
| 35 | static boolean oasys_write_syms PARAMS ((bfd *)); |
| 36 | static boolean oasys_write_header PARAMS ((bfd *)); |
| 37 | static boolean oasys_write_end PARAMS ((bfd *)); |
| 38 | static boolean oasys_write_data PARAMS ((bfd *)); |
| 39 | static size_t oasys_string_length PARAMS ((oasys_record_union_type *)); |
| 40 | static boolean oasys_slurp_symbol_table PARAMS ((bfd *const)); |
| 41 | static long int oasys_get_symtab_upper_bound PARAMS ((bfd *const)); |
| 42 | static const bfd_target *oasys_archive_p PARAMS ((bfd *)); |
| 43 | static boolean oasys_mkobject PARAMS ((bfd *)); |
| 44 | static const bfd_target *oasys_object_p PARAMS ((bfd *)); |
| 45 | static void oasys_get_symbol_info PARAMS ((bfd *, asymbol *, symbol_info *)); |
| 46 | static void oasys_print_symbol |
| 47 | PARAMS ((bfd *, void *, asymbol *, bfd_print_symbol_type)); |
| 48 | static boolean oasys_new_section_hook PARAMS ((bfd *, asection *)); |
| 49 | static long int oasys_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr)); |
| 50 | static boolean oasys_get_section_contents |
| 51 | PARAMS ((bfd *, sec_ptr, void *, file_ptr, bfd_size_type)); |
| 52 | static int comp PARAMS ((const void *, const void *)); |
| 53 | static boolean oasys_write_object_contents PARAMS ((bfd *)); |
| 54 | static boolean oasys_set_section_contents |
| 55 | PARAMS ((bfd *, sec_ptr, void *, file_ptr, bfd_size_type)); |
| 56 | static asymbol *oasys_make_empty_symbol PARAMS ((bfd *)); |
| 57 | static bfd *oasys_openr_next_archived_file PARAMS ((bfd *, bfd *)); |
| 58 | static boolean oasys_find_nearest_line |
| 59 | PARAMS ((bfd *, asection *, asymbol **, bfd_vma, |
| 60 | const char **, const char **, unsigned int *)); |
| 61 | static int oasys_generic_stat_arch_elt PARAMS ((bfd *, struct stat *)); |
| 62 | static int oasys_sizeof_headers PARAMS ((bfd *, boolean)); |
| 63 | |
| 64 | long oasys_get_symtab PARAMS ((bfd *, asymbol **)); |
| 65 | long oasys_canonicalize_reloc |
| 66 | PARAMS ((bfd *, sec_ptr, arelent **, asymbol **)); |
| 67 | |
| 68 | /* Read in all the section data and relocation stuff too. */ |
| 69 | |
| 70 | static boolean |
| 71 | oasys_read_record (abfd, record) |
| 72 | bfd *abfd; |
| 73 | oasys_record_union_type *record; |
| 74 | { |
| 75 | bfd_size_type amt = sizeof (record->header); |
| 76 | if (bfd_bread ((PTR) record, amt, abfd) != amt) |
| 77 | return false; |
| 78 | |
| 79 | amt = record->header.length - sizeof (record->header); |
| 80 | if ((long) amt <= 0) |
| 81 | return true; |
| 82 | if (bfd_bread ((PTR) ((char *) record + sizeof (record->header)), amt, abfd) |
| 83 | != amt) |
| 84 | return false; |
| 85 | return true; |
| 86 | } |
| 87 | |
| 88 | static size_t |
| 89 | oasys_string_length (record) |
| 90 | oasys_record_union_type *record; |
| 91 | { |
| 92 | return record->header.length |
| 93 | - ((char *) record->symbol.name - (char *) record); |
| 94 | } |
| 95 | |
| 96 | /*****************************************************************************/ |
| 97 | |
| 98 | /* |
| 99 | |
| 100 | Slurp the symbol table by reading in all the records at the start file |
| 101 | till we get to the first section record. |
| 102 | |
| 103 | We'll sort the symbolss into two lists, defined and undefined. The |
| 104 | undefined symbols will be placed into the table according to their |
| 105 | refno. |
| 106 | |
| 107 | We do this by placing all undefined symbols at the front of the table |
| 108 | moving in, and the defined symbols at the end of the table moving back. |
| 109 | |
| 110 | */ |
| 111 | |
| 112 | static boolean |
| 113 | oasys_slurp_symbol_table (abfd) |
| 114 | bfd *const abfd; |
| 115 | { |
| 116 | oasys_record_union_type record; |
| 117 | oasys_data_type *data = OASYS_DATA (abfd); |
| 118 | boolean loop = true; |
| 119 | asymbol *dest_defined; |
| 120 | asymbol *dest; |
| 121 | char *string_ptr; |
| 122 | bfd_size_type amt; |
| 123 | |
| 124 | if (data->symbols != (asymbol *) NULL) |
| 125 | { |
| 126 | return true; |
| 127 | } |
| 128 | /* Buy enough memory for all the symbols and all the names */ |
| 129 | amt = abfd->symcount; |
| 130 | amt *= sizeof (asymbol); |
| 131 | data->symbols = (asymbol *) bfd_alloc (abfd, amt); |
| 132 | |
| 133 | amt = data->symbol_string_length; |
| 134 | #ifdef UNDERSCORE_HACK |
| 135 | /* buy 1 more char for each symbol to keep the underscore in*/ |
| 136 | amt += abfd->symcount; |
| 137 | #endif |
| 138 | data->strings = bfd_alloc (abfd, amt); |
| 139 | |
| 140 | if (!data->symbols || !data->strings) |
| 141 | return false; |
| 142 | |
| 143 | dest_defined = data->symbols + abfd->symcount - 1; |
| 144 | |
| 145 | string_ptr = data->strings; |
| 146 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 147 | return false; |
| 148 | while (loop) |
| 149 | { |
| 150 | |
| 151 | if (! oasys_read_record (abfd, &record)) |
| 152 | return false; |
| 153 | switch (record.header.type) |
| 154 | { |
| 155 | case oasys_record_is_header_enum: |
| 156 | break; |
| 157 | case oasys_record_is_local_enum: |
| 158 | case oasys_record_is_symbol_enum: |
| 159 | { |
| 160 | int flag = record.header.type == (int) oasys_record_is_local_enum ? |
| 161 | (BSF_LOCAL) : (BSF_GLOBAL | BSF_EXPORT); |
| 162 | |
| 163 | |
| 164 | size_t length = oasys_string_length (&record); |
| 165 | switch (record.symbol.relb & RELOCATION_TYPE_BITS) |
| 166 | { |
| 167 | case RELOCATION_TYPE_ABS: |
| 168 | dest = dest_defined--; |
| 169 | dest->section = bfd_abs_section_ptr; |
| 170 | dest->flags = 0; |
| 171 | |
| 172 | break; |
| 173 | case RELOCATION_TYPE_REL: |
| 174 | dest = dest_defined--; |
| 175 | dest->section = |
| 176 | OASYS_DATA (abfd)->sections[record.symbol.relb & |
| 177 | RELOCATION_SECT_BITS]; |
| 178 | if (record.header.type == (int) oasys_record_is_local_enum) |
| 179 | { |
| 180 | dest->flags = BSF_LOCAL; |
| 181 | if (dest->section == (asection *) (~0)) |
| 182 | { |
| 183 | /* It seems that sometimes internal symbols are tied up, but |
| 184 | still get output, even though there is no |
| 185 | section */ |
| 186 | dest->section = 0; |
| 187 | } |
| 188 | } |
| 189 | else |
| 190 | { |
| 191 | |
| 192 | dest->flags = flag; |
| 193 | } |
| 194 | break; |
| 195 | case RELOCATION_TYPE_UND: |
| 196 | dest = data->symbols + H_GET_16 (abfd, record.symbol.refno); |
| 197 | dest->section = bfd_und_section_ptr; |
| 198 | break; |
| 199 | case RELOCATION_TYPE_COM: |
| 200 | dest = dest_defined--; |
| 201 | dest->name = string_ptr; |
| 202 | dest->the_bfd = abfd; |
| 203 | |
| 204 | dest->section = bfd_com_section_ptr; |
| 205 | |
| 206 | break; |
| 207 | default: |
| 208 | dest = dest_defined--; |
| 209 | BFD_ASSERT (0); |
| 210 | break; |
| 211 | } |
| 212 | dest->name = string_ptr; |
| 213 | dest->the_bfd = abfd; |
| 214 | dest->udata.p = (PTR) NULL; |
| 215 | dest->value = H_GET_32 (abfd, record.symbol.value); |
| 216 | |
| 217 | #ifdef UNDERSCORE_HACK |
| 218 | if (record.symbol.name[0] != '_') |
| 219 | { |
| 220 | string_ptr[0] = '_'; |
| 221 | string_ptr++; |
| 222 | } |
| 223 | #endif |
| 224 | memcpy (string_ptr, record.symbol.name, length); |
| 225 | |
| 226 | |
| 227 | string_ptr[length] = 0; |
| 228 | string_ptr += length + 1; |
| 229 | } |
| 230 | break; |
| 231 | default: |
| 232 | loop = false; |
| 233 | } |
| 234 | } |
| 235 | return true; |
| 236 | } |
| 237 | |
| 238 | static long |
| 239 | oasys_get_symtab_upper_bound (abfd) |
| 240 | bfd *const abfd; |
| 241 | { |
| 242 | if (! oasys_slurp_symbol_table (abfd)) |
| 243 | return -1; |
| 244 | |
| 245 | return (abfd->symcount + 1) * (sizeof (oasys_symbol_type *)); |
| 246 | } |
| 247 | |
| 248 | extern const bfd_target oasys_vec; |
| 249 | |
| 250 | long |
| 251 | oasys_get_symtab (abfd, location) |
| 252 | bfd *abfd; |
| 253 | asymbol **location; |
| 254 | { |
| 255 | asymbol *symbase; |
| 256 | unsigned int counter; |
| 257 | if (oasys_slurp_symbol_table (abfd) == false) |
| 258 | { |
| 259 | return -1; |
| 260 | } |
| 261 | symbase = OASYS_DATA (abfd)->symbols; |
| 262 | for (counter = 0; counter < abfd->symcount; counter++) |
| 263 | { |
| 264 | *(location++) = symbase++; |
| 265 | } |
| 266 | *location = 0; |
| 267 | return abfd->symcount; |
| 268 | } |
| 269 | |
| 270 | /*********************************************************************** |
| 271 | * archive stuff |
| 272 | */ |
| 273 | |
| 274 | static const bfd_target * |
| 275 | oasys_archive_p (abfd) |
| 276 | bfd *abfd; |
| 277 | { |
| 278 | oasys_archive_header_type header; |
| 279 | oasys_extarchive_header_type header_ext; |
| 280 | unsigned int i; |
| 281 | file_ptr filepos; |
| 282 | bfd_size_type amt; |
| 283 | |
| 284 | amt = sizeof (header_ext); |
| 285 | if (bfd_seek (abfd, (file_ptr) 0, 0) != 0 |
| 286 | || bfd_bread ((PTR) &header_ext, amt, abfd) != amt) |
| 287 | { |
| 288 | if (bfd_get_error () != bfd_error_system_call) |
| 289 | bfd_set_error (bfd_error_wrong_format); |
| 290 | return NULL; |
| 291 | } |
| 292 | |
| 293 | header.version = H_GET_32 (abfd, header_ext.version); |
| 294 | header.mod_count = H_GET_32 (abfd, header_ext.mod_count); |
| 295 | header.mod_tbl_offset = H_GET_32 (abfd, header_ext.mod_tbl_offset); |
| 296 | header.sym_tbl_size = H_GET_32 (abfd, header_ext.sym_tbl_size); |
| 297 | header.sym_count = H_GET_32 (abfd, header_ext.sym_count); |
| 298 | header.sym_tbl_offset = H_GET_32 (abfd, header_ext.sym_tbl_offset); |
| 299 | header.xref_count = H_GET_32 (abfd, header_ext.xref_count); |
| 300 | header.xref_lst_offset = H_GET_32 (abfd, header_ext.xref_lst_offset); |
| 301 | |
| 302 | /* |
| 303 | There isn't a magic number in an Oasys archive, so the best we |
| 304 | can do to verify reasnableness is to make sure that the values in |
| 305 | the header are too weird |
| 306 | */ |
| 307 | |
| 308 | if (header.version > 10000 || |
| 309 | header.mod_count > 10000 || |
| 310 | header.sym_count > 100000 || |
| 311 | header.xref_count > 100000) |
| 312 | return (const bfd_target *) NULL; |
| 313 | |
| 314 | /* |
| 315 | That all worked, let's buy the space for the header and read in |
| 316 | the headers. |
| 317 | */ |
| 318 | { |
| 319 | oasys_ar_data_type *ar; |
| 320 | oasys_module_info_type *module; |
| 321 | oasys_module_table_type record; |
| 322 | |
| 323 | amt = sizeof (oasys_ar_data_type); |
| 324 | ar = (oasys_ar_data_type *) bfd_alloc (abfd, amt); |
| 325 | |
| 326 | amt = header.mod_count; |
| 327 | amt *= sizeof (oasys_module_info_type); |
| 328 | module = (oasys_module_info_type *) bfd_alloc (abfd, amt); |
| 329 | |
| 330 | if (!ar || !module) |
| 331 | return NULL; |
| 332 | |
| 333 | abfd->tdata.oasys_ar_data = ar; |
| 334 | ar->module = module; |
| 335 | ar->module_count = header.mod_count; |
| 336 | |
| 337 | filepos = header.mod_tbl_offset; |
| 338 | for (i = 0; i < header.mod_count; i++) |
| 339 | { |
| 340 | if (bfd_seek (abfd, filepos, SEEK_SET) != 0) |
| 341 | return NULL; |
| 342 | |
| 343 | /* There are two ways of specifying the archive header */ |
| 344 | |
| 345 | if (0) |
| 346 | { |
| 347 | oasys_extmodule_table_type_a_type record_ext; |
| 348 | |
| 349 | amt = sizeof (record_ext); |
| 350 | if (bfd_bread ((PTR) &record_ext, amt, abfd) != amt) |
| 351 | return NULL; |
| 352 | |
| 353 | record.mod_size = H_GET_32 (abfd, record_ext.mod_size); |
| 354 | record.file_offset = H_GET_32 (abfd, record_ext.file_offset); |
| 355 | |
| 356 | record.dep_count = H_GET_32 (abfd, record_ext.dep_count); |
| 357 | record.depee_count = H_GET_32 (abfd, record_ext.depee_count); |
| 358 | record.sect_count = H_GET_32 (abfd, record_ext.sect_count); |
| 359 | |
| 360 | module[i].name = bfd_alloc (abfd, (bfd_size_type) 33); |
| 361 | if (!module[i].name) |
| 362 | return NULL; |
| 363 | |
| 364 | memcpy (module[i].name, record_ext.mod_name, 33); |
| 365 | filepos += |
| 366 | sizeof (record_ext) + |
| 367 | record.dep_count * 4 + |
| 368 | record.depee_count * 4 + |
| 369 | record.sect_count * 8 + 187; |
| 370 | } |
| 371 | else |
| 372 | { |
| 373 | oasys_extmodule_table_type_b_type record_ext; |
| 374 | |
| 375 | amt = sizeof (record_ext); |
| 376 | if (bfd_bread ((PTR) &record_ext, amt, abfd) != amt) |
| 377 | return NULL; |
| 378 | |
| 379 | record.mod_size = H_GET_32 (abfd, record_ext.mod_size); |
| 380 | record.file_offset = H_GET_32 (abfd, record_ext.file_offset); |
| 381 | |
| 382 | record.dep_count = H_GET_32 (abfd, record_ext.dep_count); |
| 383 | record.depee_count = H_GET_32 (abfd, record_ext.depee_count); |
| 384 | record.sect_count = H_GET_32 (abfd, record_ext.sect_count); |
| 385 | record.module_name_size = H_GET_32 (abfd, |
| 386 | record_ext.mod_name_length); |
| 387 | |
| 388 | amt = record.module_name_size; |
| 389 | module[i].name = bfd_alloc (abfd, amt + 1); |
| 390 | if (!module[i].name) |
| 391 | return NULL; |
| 392 | if (bfd_bread ((PTR) module[i].name, amt, abfd) != amt) |
| 393 | return NULL; |
| 394 | module[i].name[record.module_name_size] = 0; |
| 395 | filepos += (sizeof (record_ext) |
| 396 | + record.dep_count * 4 |
| 397 | + record.module_name_size + 1); |
| 398 | } |
| 399 | |
| 400 | module[i].size = record.mod_size; |
| 401 | module[i].pos = record.file_offset; |
| 402 | module[i].abfd = 0; |
| 403 | } |
| 404 | } |
| 405 | return abfd->xvec; |
| 406 | } |
| 407 | |
| 408 | static boolean |
| 409 | oasys_mkobject (abfd) |
| 410 | bfd *abfd; |
| 411 | { |
| 412 | bfd_size_type amt = sizeof (oasys_data_type); |
| 413 | abfd->tdata.oasys_obj_data = (oasys_data_type *) bfd_alloc (abfd, amt); |
| 414 | return abfd->tdata.oasys_obj_data ? true : false; |
| 415 | } |
| 416 | |
| 417 | #define MAX_SECS 16 |
| 418 | static const bfd_target * |
| 419 | oasys_object_p (abfd) |
| 420 | bfd *abfd; |
| 421 | { |
| 422 | oasys_data_type *oasys; |
| 423 | oasys_data_type *save = OASYS_DATA (abfd); |
| 424 | boolean loop = true; |
| 425 | boolean had_usefull = false; |
| 426 | |
| 427 | abfd->tdata.oasys_obj_data = 0; |
| 428 | oasys_mkobject (abfd); |
| 429 | oasys = OASYS_DATA (abfd); |
| 430 | memset ((PTR) oasys->sections, 0xff, sizeof (oasys->sections)); |
| 431 | |
| 432 | /* Point to the start of the file */ |
| 433 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 434 | goto fail; |
| 435 | oasys->symbol_string_length = 0; |
| 436 | /* Inspect the records, but only keep the section info - |
| 437 | remember the size of the symbols |
| 438 | */ |
| 439 | oasys->first_data_record = 0; |
| 440 | while (loop) |
| 441 | { |
| 442 | oasys_record_union_type record; |
| 443 | if (! oasys_read_record (abfd, &record)) |
| 444 | goto fail; |
| 445 | if ((size_t) record.header.length < (size_t) sizeof (record.header)) |
| 446 | goto fail; |
| 447 | |
| 448 | |
| 449 | switch ((oasys_record_enum_type) (record.header.type)) |
| 450 | { |
| 451 | case oasys_record_is_header_enum: |
| 452 | had_usefull = true; |
| 453 | break; |
| 454 | case oasys_record_is_symbol_enum: |
| 455 | case oasys_record_is_local_enum: |
| 456 | /* Count symbols and remember their size for a future malloc */ |
| 457 | abfd->symcount++; |
| 458 | oasys->symbol_string_length += 1 + oasys_string_length (&record); |
| 459 | had_usefull = true; |
| 460 | break; |
| 461 | case oasys_record_is_section_enum: |
| 462 | { |
| 463 | asection *s; |
| 464 | char *buffer; |
| 465 | unsigned int section_number; |
| 466 | if (record.section.header.length != sizeof (record.section)) |
| 467 | { |
| 468 | goto fail; |
| 469 | } |
| 470 | buffer = bfd_alloc (abfd, (bfd_size_type) 3); |
| 471 | if (!buffer) |
| 472 | goto fail; |
| 473 | section_number = record.section.relb & RELOCATION_SECT_BITS; |
| 474 | sprintf (buffer, "%u", section_number); |
| 475 | s = bfd_make_section (abfd, buffer); |
| 476 | oasys->sections[section_number] = s; |
| 477 | switch (record.section.relb & RELOCATION_TYPE_BITS) |
| 478 | { |
| 479 | case RELOCATION_TYPE_ABS: |
| 480 | case RELOCATION_TYPE_REL: |
| 481 | break; |
| 482 | case RELOCATION_TYPE_UND: |
| 483 | case RELOCATION_TYPE_COM: |
| 484 | BFD_FAIL (); |
| 485 | } |
| 486 | |
| 487 | s->_raw_size = H_GET_32 (abfd, record.section.value); |
| 488 | s->vma = H_GET_32 (abfd, record.section.vma); |
| 489 | s->flags = 0; |
| 490 | had_usefull = true; |
| 491 | } |
| 492 | break; |
| 493 | case oasys_record_is_data_enum: |
| 494 | oasys->first_data_record = bfd_tell (abfd) - record.header.length; |
| 495 | case oasys_record_is_debug_enum: |
| 496 | case oasys_record_is_module_enum: |
| 497 | case oasys_record_is_named_section_enum: |
| 498 | case oasys_record_is_end_enum: |
| 499 | if (had_usefull == false) |
| 500 | goto fail; |
| 501 | loop = false; |
| 502 | break; |
| 503 | default: |
| 504 | goto fail; |
| 505 | } |
| 506 | } |
| 507 | oasys->symbols = (asymbol *) NULL; |
| 508 | /* |
| 509 | Oasys support several architectures, but I can't see a simple way |
| 510 | to discover which one is in a particular file - we'll guess |
| 511 | */ |
| 512 | bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0); |
| 513 | if (abfd->symcount != 0) |
| 514 | { |
| 515 | abfd->flags |= HAS_SYMS; |
| 516 | } |
| 517 | |
| 518 | /* |
| 519 | We don't know if a section has data until we've read it.. |
| 520 | */ |
| 521 | |
| 522 | oasys_slurp_section_data (abfd); |
| 523 | |
| 524 | |
| 525 | return abfd->xvec; |
| 526 | |
| 527 | fail: |
| 528 | (void) bfd_release (abfd, oasys); |
| 529 | abfd->tdata.oasys_obj_data = save; |
| 530 | return (const bfd_target *) NULL; |
| 531 | } |
| 532 | |
| 533 | |
| 534 | static void |
| 535 | oasys_get_symbol_info (ignore_abfd, symbol, ret) |
| 536 | bfd *ignore_abfd ATTRIBUTE_UNUSED; |
| 537 | asymbol *symbol; |
| 538 | symbol_info *ret; |
| 539 | { |
| 540 | bfd_symbol_info (symbol, ret); |
| 541 | if (!symbol->section) |
| 542 | ret->type = (symbol->flags & BSF_LOCAL) ? 'a' : 'A'; |
| 543 | } |
| 544 | |
| 545 | static void |
| 546 | oasys_print_symbol (abfd, afile, symbol, how) |
| 547 | bfd *abfd; |
| 548 | PTR afile; |
| 549 | asymbol *symbol; |
| 550 | bfd_print_symbol_type how; |
| 551 | { |
| 552 | FILE *file = (FILE *) afile; |
| 553 | |
| 554 | switch (how) |
| 555 | { |
| 556 | case bfd_print_symbol_name: |
| 557 | case bfd_print_symbol_more: |
| 558 | fprintf (file, "%s", symbol->name); |
| 559 | break; |
| 560 | case bfd_print_symbol_all: |
| 561 | { |
| 562 | const char *section_name = symbol->section == (asection *) NULL ? |
| 563 | (const char *) "*abs" : symbol->section->name; |
| 564 | |
| 565 | bfd_print_symbol_vandf (abfd, (PTR) file, symbol); |
| 566 | |
| 567 | fprintf (file, " %-5s %s", |
| 568 | section_name, |
| 569 | symbol->name); |
| 570 | } |
| 571 | break; |
| 572 | } |
| 573 | } |
| 574 | /* |
| 575 | The howto table is build using the top two bits of a reloc byte to |
| 576 | index into it. The bits are PCREL,WORD/LONG |
| 577 | */ |
| 578 | static reloc_howto_type howto_table[] = |
| 579 | { |
| 580 | |
| 581 | HOWTO (0, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "abs16", true, 0x0000ffff, 0x0000ffff, false), |
| 582 | HOWTO (0, 0, 2, 32, false, 0, complain_overflow_bitfield, 0, "abs32", true, 0xffffffff, 0xffffffff, false), |
| 583 | HOWTO (0, 0, 1, 16, true, 0, complain_overflow_signed, 0, "pcrel16", true, 0x0000ffff, 0x0000ffff, false), |
| 584 | HOWTO (0, 0, 2, 32, true, 0, complain_overflow_signed, 0, "pcrel32", true, 0xffffffff, 0xffffffff, false) |
| 585 | }; |
| 586 | |
| 587 | /* Read in all the section data and relocation stuff too */ |
| 588 | static boolean |
| 589 | oasys_slurp_section_data (abfd) |
| 590 | bfd *const abfd; |
| 591 | { |
| 592 | oasys_record_union_type record; |
| 593 | oasys_data_type *data = OASYS_DATA (abfd); |
| 594 | boolean loop = true; |
| 595 | oasys_per_section_type *per; |
| 596 | asection *s; |
| 597 | bfd_size_type amt; |
| 598 | |
| 599 | /* See if the data has been slurped already .. */ |
| 600 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
| 601 | { |
| 602 | per = oasys_per_section (s); |
| 603 | if (per->initialized == true) |
| 604 | return true; |
| 605 | } |
| 606 | |
| 607 | if (data->first_data_record == 0) |
| 608 | return true; |
| 609 | |
| 610 | if (bfd_seek (abfd, data->first_data_record, SEEK_SET) != 0) |
| 611 | return false; |
| 612 | while (loop) |
| 613 | { |
| 614 | if (! oasys_read_record (abfd, &record)) |
| 615 | return false; |
| 616 | switch (record.header.type) |
| 617 | { |
| 618 | case oasys_record_is_header_enum: |
| 619 | break; |
| 620 | case oasys_record_is_data_enum: |
| 621 | { |
| 622 | |
| 623 | bfd_byte *src = record.data.data; |
| 624 | bfd_byte *end_src = ((bfd_byte *) & record) + record.header.length; |
| 625 | bfd_byte *dst_ptr; |
| 626 | bfd_byte *dst_base_ptr; |
| 627 | unsigned int relbit; |
| 628 | unsigned int count; |
| 629 | asection *section = |
| 630 | data->sections[record.data.relb & RELOCATION_SECT_BITS]; |
| 631 | bfd_vma dst_offset; |
| 632 | |
| 633 | per = oasys_per_section (section); |
| 634 | |
| 635 | if (per->initialized == false) |
| 636 | { |
| 637 | per->data = (bfd_byte *) bfd_zalloc (abfd, section->_raw_size); |
| 638 | if (!per->data) |
| 639 | return false; |
| 640 | per->reloc_tail_ptr |
| 641 | = (oasys_reloc_type **) §ion->relocation; |
| 642 | per->had_vma = false; |
| 643 | per->initialized = true; |
| 644 | section->reloc_count = 0; |
| 645 | section->flags = SEC_ALLOC; |
| 646 | } |
| 647 | |
| 648 | dst_offset = H_GET_32 (abfd, record.data.addr); |
| 649 | if (per->had_vma == false) |
| 650 | { |
| 651 | /* Take the first vma we see as the base */ |
| 652 | section->vma = dst_offset; |
| 653 | per->had_vma = true; |
| 654 | } |
| 655 | |
| 656 | dst_offset -= section->vma; |
| 657 | |
| 658 | dst_base_ptr = oasys_per_section (section)->data; |
| 659 | dst_ptr = oasys_per_section (section)->data + |
| 660 | dst_offset; |
| 661 | |
| 662 | if (src < end_src) |
| 663 | { |
| 664 | section->flags |= SEC_LOAD | SEC_HAS_CONTENTS; |
| 665 | } |
| 666 | while (src < end_src) |
| 667 | { |
| 668 | unsigned char mod_byte = *src++; |
| 669 | size_t gap = end_src - src; |
| 670 | |
| 671 | count = 8; |
| 672 | if (mod_byte == 0 && gap >= 8) |
| 673 | { |
| 674 | dst_ptr[0] = src[0]; |
| 675 | dst_ptr[1] = src[1]; |
| 676 | dst_ptr[2] = src[2]; |
| 677 | dst_ptr[3] = src[3]; |
| 678 | dst_ptr[4] = src[4]; |
| 679 | dst_ptr[5] = src[5]; |
| 680 | dst_ptr[6] = src[6]; |
| 681 | dst_ptr[7] = src[7]; |
| 682 | dst_ptr += 8; |
| 683 | src += 8; |
| 684 | } |
| 685 | else |
| 686 | { |
| 687 | for (relbit = 1; count-- != 0 && src < end_src; relbit <<= 1) |
| 688 | { |
| 689 | if (relbit & mod_byte) |
| 690 | { |
| 691 | unsigned char reloc = *src; |
| 692 | /* This item needs to be relocated */ |
| 693 | switch (reloc & RELOCATION_TYPE_BITS) |
| 694 | { |
| 695 | case RELOCATION_TYPE_ABS: |
| 696 | |
| 697 | break; |
| 698 | |
| 699 | case RELOCATION_TYPE_REL: |
| 700 | { |
| 701 | /* Relocate the item relative to the section */ |
| 702 | oasys_reloc_type *r; |
| 703 | |
| 704 | amt = sizeof (oasys_reloc_type); |
| 705 | r = (oasys_reloc_type *) bfd_alloc (abfd, |
| 706 | amt); |
| 707 | if (!r) |
| 708 | return false; |
| 709 | *(per->reloc_tail_ptr) = r; |
| 710 | per->reloc_tail_ptr = &r->next; |
| 711 | r->next = (oasys_reloc_type *) NULL; |
| 712 | /* Reference to undefined symbol */ |
| 713 | src++; |
| 714 | /* There is no symbol */ |
| 715 | r->symbol = 0; |
| 716 | /* Work out the howto */ |
| 717 | abort (); |
| 718 | #if 0 |
| 719 | r->relent.section = |
| 720 | data->sections[reloc & |
| 721 | RELOCATION_SECT_BITS]; |
| 722 | |
| 723 | r->relent.addend = - |
| 724 | r->relent.section->vma; |
| 725 | #endif |
| 726 | r->relent.address = dst_ptr - dst_base_ptr; |
| 727 | r->relent.howto = &howto_table[reloc >> 6]; |
| 728 | r->relent.sym_ptr_ptr = (asymbol **) NULL; |
| 729 | section->reloc_count++; |
| 730 | |
| 731 | /* Fake up the data to look like it's got the -ve pc in it, this makes |
| 732 | it much easier to convert into other formats. This is done by |
| 733 | hitting the addend. |
| 734 | */ |
| 735 | if (r->relent.howto->pc_relative == true) |
| 736 | { |
| 737 | r->relent.addend -= dst_ptr - dst_base_ptr; |
| 738 | } |
| 739 | |
| 740 | |
| 741 | } |
| 742 | break; |
| 743 | |
| 744 | |
| 745 | case RELOCATION_TYPE_UND: |
| 746 | { |
| 747 | oasys_reloc_type *r; |
| 748 | |
| 749 | amt = sizeof (oasys_reloc_type); |
| 750 | r = (oasys_reloc_type *) bfd_alloc (abfd, |
| 751 | amt); |
| 752 | if (!r) |
| 753 | return false; |
| 754 | *(per->reloc_tail_ptr) = r; |
| 755 | per->reloc_tail_ptr = &r->next; |
| 756 | r->next = (oasys_reloc_type *) NULL; |
| 757 | /* Reference to undefined symbol */ |
| 758 | src++; |
| 759 | /* Get symbol number */ |
| 760 | r->symbol = (src[0] << 8) | src[1]; |
| 761 | /* Work out the howto */ |
| 762 | abort (); |
| 763 | |
| 764 | #if 0 |
| 765 | r->relent.section = (asection |
| 766 | *) NULL; |
| 767 | #endif |
| 768 | r->relent.addend = 0; |
| 769 | r->relent.address = dst_ptr - dst_base_ptr; |
| 770 | r->relent.howto = &howto_table[reloc >> 6]; |
| 771 | r->relent.sym_ptr_ptr = (asymbol **) NULL; |
| 772 | section->reloc_count++; |
| 773 | |
| 774 | src += 2; |
| 775 | /* Fake up the data to look like it's got the -ve pc in it, this makes |
| 776 | it much easier to convert into other formats. This is done by |
| 777 | hitting the addend. |
| 778 | */ |
| 779 | if (r->relent.howto->pc_relative == true) |
| 780 | { |
| 781 | r->relent.addend -= dst_ptr - dst_base_ptr; |
| 782 | } |
| 783 | |
| 784 | |
| 785 | |
| 786 | } |
| 787 | break; |
| 788 | case RELOCATION_TYPE_COM: |
| 789 | BFD_FAIL (); |
| 790 | } |
| 791 | } |
| 792 | *dst_ptr++ = *src++; |
| 793 | } |
| 794 | } |
| 795 | } |
| 796 | } |
| 797 | break; |
| 798 | case oasys_record_is_local_enum: |
| 799 | case oasys_record_is_symbol_enum: |
| 800 | case oasys_record_is_section_enum: |
| 801 | break; |
| 802 | default: |
| 803 | loop = false; |
| 804 | } |
| 805 | } |
| 806 | |
| 807 | return true; |
| 808 | |
| 809 | } |
| 810 | |
| 811 | static boolean |
| 812 | oasys_new_section_hook (abfd, newsect) |
| 813 | bfd *abfd; |
| 814 | asection *newsect; |
| 815 | { |
| 816 | newsect->used_by_bfd = (PTR) |
| 817 | bfd_alloc (abfd, (bfd_size_type) sizeof (oasys_per_section_type)); |
| 818 | if (!newsect->used_by_bfd) |
| 819 | return false; |
| 820 | oasys_per_section (newsect)->data = (bfd_byte *) NULL; |
| 821 | oasys_per_section (newsect)->section = newsect; |
| 822 | oasys_per_section (newsect)->offset = 0; |
| 823 | oasys_per_section (newsect)->initialized = false; |
| 824 | newsect->alignment_power = 1; |
| 825 | /* Turn the section string into an index */ |
| 826 | |
| 827 | sscanf (newsect->name, "%u", &newsect->target_index); |
| 828 | |
| 829 | return true; |
| 830 | } |
| 831 | |
| 832 | |
| 833 | static long |
| 834 | oasys_get_reloc_upper_bound (abfd, asect) |
| 835 | bfd *abfd; |
| 836 | sec_ptr asect; |
| 837 | { |
| 838 | if (! oasys_slurp_section_data (abfd)) |
| 839 | return -1; |
| 840 | return (asect->reloc_count + 1) * sizeof (arelent *); |
| 841 | } |
| 842 | |
| 843 | static boolean |
| 844 | oasys_get_section_contents (abfd, section, location, offset, count) |
| 845 | bfd *abfd; |
| 846 | sec_ptr section; |
| 847 | PTR location; |
| 848 | file_ptr offset; |
| 849 | bfd_size_type count; |
| 850 | { |
| 851 | oasys_per_section_type *p = (oasys_per_section_type *) section->used_by_bfd; |
| 852 | oasys_slurp_section_data (abfd); |
| 853 | if (p->initialized == false) |
| 854 | { |
| 855 | (void) memset (location, 0, (size_t) count); |
| 856 | } |
| 857 | else |
| 858 | { |
| 859 | (void) memcpy (location, (PTR) (p->data + offset), (size_t) count); |
| 860 | } |
| 861 | return true; |
| 862 | } |
| 863 | |
| 864 | |
| 865 | long |
| 866 | oasys_canonicalize_reloc (ignore_abfd, section, relptr, symbols) |
| 867 | bfd *ignore_abfd ATTRIBUTE_UNUSED; |
| 868 | sec_ptr section; |
| 869 | arelent **relptr; |
| 870 | asymbol **symbols ATTRIBUTE_UNUSED; |
| 871 | { |
| 872 | unsigned int reloc_count = 0; |
| 873 | oasys_reloc_type *src = (oasys_reloc_type *) (section->relocation); |
| 874 | while (src != (oasys_reloc_type *) NULL) |
| 875 | { |
| 876 | abort (); |
| 877 | |
| 878 | #if 0 |
| 879 | if (src->relent.section == (asection *) NULL) |
| 880 | { |
| 881 | src->relent.sym_ptr_ptr = symbols + src->symbol; |
| 882 | } |
| 883 | #endif |
| 884 | |
| 885 | *relptr++ = &src->relent; |
| 886 | src = src->next; |
| 887 | reloc_count++; |
| 888 | } |
| 889 | *relptr = (arelent *) NULL; |
| 890 | return section->reloc_count = reloc_count; |
| 891 | } |
| 892 | |
| 893 | |
| 894 | |
| 895 | |
| 896 | /* Writing */ |
| 897 | |
| 898 | |
| 899 | /* Calculate the checksum and write one record */ |
| 900 | static boolean |
| 901 | oasys_write_record (abfd, type, record, size) |
| 902 | bfd *abfd; |
| 903 | oasys_record_enum_type type; |
| 904 | oasys_record_union_type *record; |
| 905 | size_t size; |
| 906 | { |
| 907 | int checksum; |
| 908 | size_t i; |
| 909 | unsigned char *ptr; |
| 910 | |
| 911 | record->header.length = size; |
| 912 | record->header.type = (int) type; |
| 913 | record->header.check_sum = 0; |
| 914 | record->header.fill = 0; |
| 915 | ptr = (unsigned char *) &record->pad[0]; |
| 916 | checksum = 0; |
| 917 | for (i = 0; i < size; i++) |
| 918 | { |
| 919 | checksum += *ptr++; |
| 920 | } |
| 921 | record->header.check_sum = 0xff & (-checksum); |
| 922 | if (bfd_bwrite ((PTR) record, (bfd_size_type) size, abfd) != size) |
| 923 | return false; |
| 924 | return true; |
| 925 | } |
| 926 | |
| 927 | |
| 928 | /* Write out all the symbols */ |
| 929 | static boolean |
| 930 | oasys_write_syms (abfd) |
| 931 | bfd *abfd; |
| 932 | { |
| 933 | unsigned int count; |
| 934 | asymbol **generic = bfd_get_outsymbols (abfd); |
| 935 | unsigned int index = 0; |
| 936 | for (count = 0; count < bfd_get_symcount (abfd); count++) |
| 937 | { |
| 938 | |
| 939 | oasys_symbol_record_type symbol; |
| 940 | asymbol *const g = generic[count]; |
| 941 | |
| 942 | const char *src = g->name; |
| 943 | char *dst = symbol.name; |
| 944 | unsigned int l = 0; |
| 945 | |
| 946 | if (bfd_is_com_section (g->section)) |
| 947 | { |
| 948 | symbol.relb = RELOCATION_TYPE_COM; |
| 949 | H_PUT_16 (abfd, index, symbol.refno); |
| 950 | index++; |
| 951 | } |
| 952 | else if (bfd_is_abs_section (g->section)) |
| 953 | { |
| 954 | symbol.relb = RELOCATION_TYPE_ABS; |
| 955 | H_PUT_16 (abfd, 0, symbol.refno); |
| 956 | |
| 957 | } |
| 958 | else if (bfd_is_und_section (g->section)) |
| 959 | { |
| 960 | symbol.relb = RELOCATION_TYPE_UND; |
| 961 | H_PUT_16 (abfd, index, symbol.refno); |
| 962 | /* Overload the value field with the output index number */ |
| 963 | index++; |
| 964 | } |
| 965 | else if (g->flags & BSF_DEBUGGING) |
| 966 | { |
| 967 | /* throw it away */ |
| 968 | continue; |
| 969 | } |
| 970 | else |
| 971 | { |
| 972 | if (g->section == (asection *) NULL) |
| 973 | { |
| 974 | /* Sometime, the oasys tools give out a symbol with illegal |
| 975 | bits in it, we'll output it in the same broken way */ |
| 976 | |
| 977 | symbol.relb = RELOCATION_TYPE_REL | 0; |
| 978 | } |
| 979 | else |
| 980 | { |
| 981 | symbol.relb = RELOCATION_TYPE_REL | g->section->output_section->target_index; |
| 982 | } |
| 983 | H_PUT_16 (abfd, 0, symbol.refno); |
| 984 | } |
| 985 | #ifdef UNDERSCORE_HACK |
| 986 | if (src[l] == '_') |
| 987 | dst[l++] = '.'; |
| 988 | #endif |
| 989 | while (src[l]) |
| 990 | { |
| 991 | dst[l] = src[l]; |
| 992 | l++; |
| 993 | } |
| 994 | |
| 995 | H_PUT_32 (abfd, g->value, symbol.value); |
| 996 | |
| 997 | |
| 998 | if (g->flags & BSF_LOCAL) |
| 999 | { |
| 1000 | if (! oasys_write_record (abfd, |
| 1001 | oasys_record_is_local_enum, |
| 1002 | (oasys_record_union_type *) & symbol, |
| 1003 | offsetof (oasys_symbol_record_type, |
| 1004 | name[0]) + l)) |
| 1005 | return false; |
| 1006 | } |
| 1007 | else |
| 1008 | { |
| 1009 | if (! oasys_write_record (abfd, |
| 1010 | oasys_record_is_symbol_enum, |
| 1011 | (oasys_record_union_type *) & symbol, |
| 1012 | offsetof (oasys_symbol_record_type, |
| 1013 | name[0]) + l)) |
| 1014 | return false; |
| 1015 | } |
| 1016 | g->value = index - 1; |
| 1017 | } |
| 1018 | |
| 1019 | return true; |
| 1020 | } |
| 1021 | |
| 1022 | |
| 1023 | /* Write a section header for each section */ |
| 1024 | static boolean |
| 1025 | oasys_write_sections (abfd) |
| 1026 | bfd *abfd; |
| 1027 | { |
| 1028 | asection *s; |
| 1029 | static oasys_section_record_type out; |
| 1030 | |
| 1031 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
| 1032 | { |
| 1033 | if (!isdigit ((unsigned char) s->name[0])) |
| 1034 | { |
| 1035 | (*_bfd_error_handler) |
| 1036 | (_("%s: can not represent section `%s' in oasys"), |
| 1037 | bfd_get_filename (abfd), s->name); |
| 1038 | bfd_set_error (bfd_error_nonrepresentable_section); |
| 1039 | return false; |
| 1040 | } |
| 1041 | out.relb = RELOCATION_TYPE_REL | s->target_index; |
| 1042 | H_PUT_32 (abfd, s->_cooked_size, out.value); |
| 1043 | H_PUT_32 (abfd, s->vma, out.vma); |
| 1044 | |
| 1045 | if (! oasys_write_record (abfd, |
| 1046 | oasys_record_is_section_enum, |
| 1047 | (oasys_record_union_type *) & out, |
| 1048 | sizeof (out))) |
| 1049 | return false; |
| 1050 | } |
| 1051 | return true; |
| 1052 | } |
| 1053 | |
| 1054 | static boolean |
| 1055 | oasys_write_header (abfd) |
| 1056 | bfd *abfd; |
| 1057 | { |
| 1058 | /* Create and write the header */ |
| 1059 | oasys_header_record_type r; |
| 1060 | size_t length = strlen (abfd->filename); |
| 1061 | if (length > (size_t) sizeof (r.module_name)) |
| 1062 | { |
| 1063 | length = sizeof (r.module_name); |
| 1064 | } |
| 1065 | |
| 1066 | (void) memcpy (r.module_name, |
| 1067 | abfd->filename, |
| 1068 | length); |
| 1069 | (void) memset (r.module_name + length, |
| 1070 | ' ', |
| 1071 | sizeof (r.module_name) - length); |
| 1072 | |
| 1073 | r.version_number = OASYS_VERSION_NUMBER; |
| 1074 | r.rev_number = OASYS_REV_NUMBER; |
| 1075 | if (! oasys_write_record (abfd, |
| 1076 | oasys_record_is_header_enum, |
| 1077 | (oasys_record_union_type *) & r, |
| 1078 | offsetof (oasys_header_record_type, |
| 1079 | description[0]))) |
| 1080 | return false; |
| 1081 | |
| 1082 | return true; |
| 1083 | } |
| 1084 | |
| 1085 | static boolean |
| 1086 | oasys_write_end (abfd) |
| 1087 | bfd *abfd; |
| 1088 | { |
| 1089 | oasys_end_record_type end; |
| 1090 | unsigned char null = 0; |
| 1091 | end.relb = RELOCATION_TYPE_ABS; |
| 1092 | H_PUT_32 (abfd, abfd->start_address, end.entry); |
| 1093 | H_PUT_16 (abfd, 0, end.fill); |
| 1094 | end.zero = 0; |
| 1095 | if (! oasys_write_record (abfd, |
| 1096 | oasys_record_is_end_enum, |
| 1097 | (oasys_record_union_type *) & end, |
| 1098 | sizeof (end))) |
| 1099 | return false; |
| 1100 | if (bfd_bwrite ((PTR) &null, (bfd_size_type) 1, abfd) != 1) |
| 1101 | return false; |
| 1102 | return true; |
| 1103 | } |
| 1104 | |
| 1105 | static int |
| 1106 | comp (ap, bp) |
| 1107 | const PTR ap; |
| 1108 | const PTR bp; |
| 1109 | { |
| 1110 | arelent *a = *((arelent **) ap); |
| 1111 | arelent *b = *((arelent **) bp); |
| 1112 | return a->address - b->address; |
| 1113 | } |
| 1114 | |
| 1115 | /* |
| 1116 | Writing data.. |
| 1117 | |
| 1118 | */ |
| 1119 | static boolean |
| 1120 | oasys_write_data (abfd) |
| 1121 | bfd *abfd; |
| 1122 | { |
| 1123 | asection *s; |
| 1124 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) |
| 1125 | { |
| 1126 | if (s->flags & SEC_LOAD) |
| 1127 | { |
| 1128 | bfd_byte *raw_data = oasys_per_section (s)->data; |
| 1129 | oasys_data_record_type processed_data; |
| 1130 | bfd_size_type current_byte_index = 0; |
| 1131 | unsigned int relocs_to_go = s->reloc_count; |
| 1132 | arelent **p = s->orelocation; |
| 1133 | if (s->reloc_count != 0) |
| 1134 | { |
| 1135 | /* Sort the reloc records so it's easy to insert the relocs into the |
| 1136 | data */ |
| 1137 | |
| 1138 | qsort (s->orelocation, |
| 1139 | s->reloc_count, |
| 1140 | sizeof (arelent **), |
| 1141 | comp); |
| 1142 | } |
| 1143 | current_byte_index = 0; |
| 1144 | processed_data.relb = s->target_index | RELOCATION_TYPE_REL; |
| 1145 | |
| 1146 | while (current_byte_index < s->_cooked_size) |
| 1147 | { |
| 1148 | /* Scan forwards by eight bytes or however much is left and see if |
| 1149 | there are any relocations going on */ |
| 1150 | bfd_byte *mod = &processed_data.data[0]; |
| 1151 | bfd_byte *dst = &processed_data.data[1]; |
| 1152 | |
| 1153 | unsigned int i = 0; |
| 1154 | *mod = 0; |
| 1155 | |
| 1156 | |
| 1157 | H_PUT_32 (abfd, s->vma + current_byte_index, |
| 1158 | processed_data.addr); |
| 1159 | |
| 1160 | /* Don't start a relocation unless you're sure you can finish it |
| 1161 | within the same data record. The worst case relocation is a |
| 1162 | 4-byte relocatable value which is split across two modification |
| 1163 | bytes (1 relocation byte + 2 symbol reference bytes + 2 data + |
| 1164 | 1 modification byte + 2 data = 8 bytes total). That's where |
| 1165 | the magic number 8 comes from. |
| 1166 | */ |
| 1167 | while (current_byte_index < s->_raw_size && dst <= |
| 1168 | &processed_data.data[sizeof (processed_data.data) - 8]) |
| 1169 | { |
| 1170 | |
| 1171 | |
| 1172 | if (relocs_to_go != 0) |
| 1173 | { |
| 1174 | arelent *r = *p; |
| 1175 | reloc_howto_type *const how = r->howto; |
| 1176 | /* There is a relocation, is it for this byte ? */ |
| 1177 | if (r->address == current_byte_index) |
| 1178 | { |
| 1179 | unsigned char rel_byte; |
| 1180 | |
| 1181 | p++; |
| 1182 | relocs_to_go--; |
| 1183 | |
| 1184 | *mod |= (1 << i); |
| 1185 | if (how->pc_relative) |
| 1186 | { |
| 1187 | rel_byte = RELOCATION_PCREL_BIT; |
| 1188 | |
| 1189 | /* Also patch the raw data so that it doesn't have |
| 1190 | the -ve stuff any more */ |
| 1191 | if (how->size != 2) |
| 1192 | { |
| 1193 | bfd_put_16 (abfd, |
| 1194 | bfd_get_16 (abfd, raw_data) + |
| 1195 | current_byte_index, raw_data); |
| 1196 | } |
| 1197 | |
| 1198 | else |
| 1199 | { |
| 1200 | bfd_put_32 (abfd, |
| 1201 | bfd_get_32 (abfd, raw_data) + |
| 1202 | current_byte_index, raw_data); |
| 1203 | } |
| 1204 | } |
| 1205 | else |
| 1206 | { |
| 1207 | rel_byte = 0; |
| 1208 | } |
| 1209 | if (how->size == 2) |
| 1210 | { |
| 1211 | rel_byte |= RELOCATION_32BIT_BIT; |
| 1212 | } |
| 1213 | |
| 1214 | /* Is this a section relative relocation, or a symbol |
| 1215 | relative relocation ? */ |
| 1216 | abort (); |
| 1217 | |
| 1218 | #if 0 |
| 1219 | if (r->section != (asection *) NULL) |
| 1220 | { |
| 1221 | /* The relent has a section attached, so it must be section |
| 1222 | relative */ |
| 1223 | rel_byte |= RELOCATION_TYPE_REL; |
| 1224 | rel_byte |= r->section->output_section->target_index; |
| 1225 | *dst++ = rel_byte; |
| 1226 | } |
| 1227 | else |
| 1228 | #endif |
| 1229 | { |
| 1230 | asymbol *sym = *(r->sym_ptr_ptr); |
| 1231 | |
| 1232 | /* If this symbol has a section attached, then it |
| 1233 | has already been resolved. Change from a symbol |
| 1234 | ref to a section ref */ |
| 1235 | if (sym->section != (asection *) NULL) |
| 1236 | { |
| 1237 | rel_byte |= RELOCATION_TYPE_REL; |
| 1238 | rel_byte |= |
| 1239 | sym->section->output_section->target_index; |
| 1240 | *dst++ = rel_byte; |
| 1241 | } |
| 1242 | else |
| 1243 | { |
| 1244 | rel_byte |= RELOCATION_TYPE_UND; |
| 1245 | *dst++ = rel_byte; |
| 1246 | /* Next two bytes are a symbol index - we can get |
| 1247 | this from the symbol value which has been zapped |
| 1248 | into the symbol index in the table when the |
| 1249 | symbol table was written |
| 1250 | */ |
| 1251 | *dst++ = sym->value >> 8; |
| 1252 | *dst++ = sym->value; |
| 1253 | } |
| 1254 | } |
| 1255 | #define ADVANCE { if (++i >= 8) { i = 0; mod = dst++; *mod = 0; } current_byte_index++; } |
| 1256 | /* relocations never occur from an unloadable section, |
| 1257 | so we can assume that raw_data is not NULL |
| 1258 | */ |
| 1259 | *dst++ = *raw_data++; |
| 1260 | ADVANCE |
| 1261 | * dst++ = *raw_data++; |
| 1262 | ADVANCE |
| 1263 | if (how->size == 2) |
| 1264 | { |
| 1265 | *dst++ = *raw_data++; |
| 1266 | ADVANCE |
| 1267 | * dst++ = *raw_data++; |
| 1268 | ADVANCE |
| 1269 | } |
| 1270 | continue; |
| 1271 | } |
| 1272 | } |
| 1273 | /* If this is coming from an unloadable section then copy |
| 1274 | zeros */ |
| 1275 | if (raw_data == NULL) |
| 1276 | { |
| 1277 | *dst++ = 0; |
| 1278 | } |
| 1279 | else |
| 1280 | { |
| 1281 | *dst++ = *raw_data++; |
| 1282 | } |
| 1283 | ADVANCE |
| 1284 | } |
| 1285 | |
| 1286 | /* Don't write a useless null modification byte */ |
| 1287 | if (dst == mod + 1) |
| 1288 | { |
| 1289 | --dst; |
| 1290 | } |
| 1291 | |
| 1292 | if (! (oasys_write_record |
| 1293 | (abfd, oasys_record_is_data_enum, |
| 1294 | ((oasys_record_union_type *) &processed_data), |
| 1295 | (size_t) (dst - (bfd_byte *) &processed_data)))) |
| 1296 | return false; |
| 1297 | } |
| 1298 | } |
| 1299 | } |
| 1300 | |
| 1301 | return true; |
| 1302 | } |
| 1303 | |
| 1304 | static boolean |
| 1305 | oasys_write_object_contents (abfd) |
| 1306 | bfd *abfd; |
| 1307 | { |
| 1308 | if (! oasys_write_header (abfd)) |
| 1309 | return false; |
| 1310 | if (! oasys_write_syms (abfd)) |
| 1311 | return false; |
| 1312 | if (! oasys_write_sections (abfd)) |
| 1313 | return false; |
| 1314 | if (! oasys_write_data (abfd)) |
| 1315 | return false; |
| 1316 | if (! oasys_write_end (abfd)) |
| 1317 | return false; |
| 1318 | return true; |
| 1319 | } |
| 1320 | |
| 1321 | |
| 1322 | |
| 1323 | |
| 1324 | /** exec and core file sections */ |
| 1325 | |
| 1326 | /* set section contents is complicated with OASYS since the format is |
| 1327 | * not a byte image, but a record stream. |
| 1328 | */ |
| 1329 | static boolean |
| 1330 | oasys_set_section_contents (abfd, section, location, offset, count) |
| 1331 | bfd *abfd; |
| 1332 | sec_ptr section; |
| 1333 | PTR location; |
| 1334 | file_ptr offset; |
| 1335 | bfd_size_type count; |
| 1336 | { |
| 1337 | if (count != 0) |
| 1338 | { |
| 1339 | if (oasys_per_section (section)->data == (bfd_byte *) NULL) |
| 1340 | { |
| 1341 | oasys_per_section (section)->data = |
| 1342 | (bfd_byte *) (bfd_alloc (abfd, section->_cooked_size)); |
| 1343 | if (!oasys_per_section (section)->data) |
| 1344 | return false; |
| 1345 | } |
| 1346 | (void) memcpy ((PTR) (oasys_per_section (section)->data + offset), |
| 1347 | location, |
| 1348 | (size_t) count); |
| 1349 | } |
| 1350 | return true; |
| 1351 | } |
| 1352 | |
| 1353 | |
| 1354 | |
| 1355 | /* Native-level interface to symbols. */ |
| 1356 | |
| 1357 | /* We read the symbols into a buffer, which is discarded when this |
| 1358 | function exits. We read the strings into a buffer large enough to |
| 1359 | hold them all plus all the cached symbol entries. */ |
| 1360 | |
| 1361 | static asymbol * |
| 1362 | oasys_make_empty_symbol (abfd) |
| 1363 | bfd *abfd; |
| 1364 | { |
| 1365 | bfd_size_type amt = sizeof (oasys_symbol_type); |
| 1366 | oasys_symbol_type *new = (oasys_symbol_type *) bfd_zalloc (abfd, amt); |
| 1367 | if (!new) |
| 1368 | return NULL; |
| 1369 | new->symbol.the_bfd = abfd; |
| 1370 | return &new->symbol; |
| 1371 | } |
| 1372 | \f |
| 1373 | |
| 1374 | |
| 1375 | |
| 1376 | /* User should have checked the file flags; perhaps we should return |
| 1377 | BFD_NO_MORE_SYMBOLS if there are none? */ |
| 1378 | |
| 1379 | static bfd * |
| 1380 | oasys_openr_next_archived_file (arch, prev) |
| 1381 | bfd *arch; |
| 1382 | bfd *prev; |
| 1383 | { |
| 1384 | oasys_ar_data_type *ar = OASYS_AR_DATA (arch); |
| 1385 | oasys_module_info_type *p; |
| 1386 | /* take the next one from the arch state, or reset */ |
| 1387 | if (prev == (bfd *) NULL) |
| 1388 | { |
| 1389 | /* Reset the index - the first two entries are bogus*/ |
| 1390 | ar->module_index = 0; |
| 1391 | } |
| 1392 | |
| 1393 | p = ar->module + ar->module_index; |
| 1394 | ar->module_index++; |
| 1395 | |
| 1396 | if (ar->module_index <= ar->module_count) |
| 1397 | { |
| 1398 | if (p->abfd == (bfd *) NULL) |
| 1399 | { |
| 1400 | p->abfd = _bfd_create_empty_archive_element_shell (arch); |
| 1401 | p->abfd->origin = p->pos; |
| 1402 | p->abfd->filename = p->name; |
| 1403 | |
| 1404 | /* Fixup a pointer to this element for the member */ |
| 1405 | p->abfd->arelt_data = (PTR) p; |
| 1406 | } |
| 1407 | return p->abfd; |
| 1408 | } |
| 1409 | else |
| 1410 | { |
| 1411 | bfd_set_error (bfd_error_no_more_archived_files); |
| 1412 | return (bfd *) NULL; |
| 1413 | } |
| 1414 | } |
| 1415 | |
| 1416 | static boolean |
| 1417 | oasys_find_nearest_line (abfd, section, symbols, offset, |
| 1418 | filename_ptr, functionname_ptr, line_ptr) |
| 1419 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1420 | asection *section ATTRIBUTE_UNUSED; |
| 1421 | asymbol **symbols ATTRIBUTE_UNUSED; |
| 1422 | bfd_vma offset ATTRIBUTE_UNUSED; |
| 1423 | const char **filename_ptr ATTRIBUTE_UNUSED; |
| 1424 | const char **functionname_ptr ATTRIBUTE_UNUSED; |
| 1425 | unsigned int *line_ptr ATTRIBUTE_UNUSED; |
| 1426 | { |
| 1427 | return false; |
| 1428 | |
| 1429 | } |
| 1430 | |
| 1431 | static int |
| 1432 | oasys_generic_stat_arch_elt (abfd, buf) |
| 1433 | bfd *abfd; |
| 1434 | struct stat *buf; |
| 1435 | { |
| 1436 | oasys_module_info_type *mod = (oasys_module_info_type *) abfd->arelt_data; |
| 1437 | if (mod == (oasys_module_info_type *) NULL) |
| 1438 | { |
| 1439 | bfd_set_error (bfd_error_invalid_operation); |
| 1440 | return -1; |
| 1441 | } |
| 1442 | else |
| 1443 | { |
| 1444 | buf->st_size = mod->size; |
| 1445 | buf->st_mode = 0666; |
| 1446 | return 0; |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | static int |
| 1451 | oasys_sizeof_headers (abfd, exec) |
| 1452 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1453 | boolean exec ATTRIBUTE_UNUSED; |
| 1454 | { |
| 1455 | return 0; |
| 1456 | } |
| 1457 | |
| 1458 | #define oasys_close_and_cleanup _bfd_generic_close_and_cleanup |
| 1459 | #define oasys_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
| 1460 | |
| 1461 | #define oasys_slurp_armap bfd_true |
| 1462 | #define oasys_slurp_extended_name_table bfd_true |
| 1463 | #define oasys_construct_extended_name_table \ |
| 1464 | ((boolean (*) PARAMS ((bfd *, char **, bfd_size_type *, const char **))) \ |
| 1465 | bfd_true) |
| 1466 | #define oasys_truncate_arname bfd_dont_truncate_arname |
| 1467 | #define oasys_write_armap \ |
| 1468 | ((boolean (*) \ |
| 1469 | PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int))) \ |
| 1470 | bfd_true) |
| 1471 | #define oasys_read_ar_hdr bfd_nullvoidptr |
| 1472 | #define oasys_get_elt_at_index _bfd_generic_get_elt_at_index |
| 1473 | #define oasys_update_armap_timestamp bfd_true |
| 1474 | |
| 1475 | #define oasys_bfd_is_local_label_name bfd_generic_is_local_label_name |
| 1476 | #define oasys_get_lineno _bfd_nosymbols_get_lineno |
| 1477 | #define oasys_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
| 1478 | #define oasys_read_minisymbols _bfd_generic_read_minisymbols |
| 1479 | #define oasys_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| 1480 | |
| 1481 | #define oasys_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup |
| 1482 | |
| 1483 | #define oasys_set_arch_mach bfd_default_set_arch_mach |
| 1484 | |
| 1485 | #define oasys_get_section_contents_in_window \ |
| 1486 | _bfd_generic_get_section_contents_in_window |
| 1487 | |
| 1488 | #define oasys_bfd_get_relocated_section_contents \ |
| 1489 | bfd_generic_get_relocated_section_contents |
| 1490 | #define oasys_bfd_relax_section bfd_generic_relax_section |
| 1491 | #define oasys_bfd_gc_sections bfd_generic_gc_sections |
| 1492 | #define oasys_bfd_merge_sections bfd_generic_merge_sections |
| 1493 | #define oasys_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| 1494 | #define oasys_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| 1495 | #define oasys_bfd_final_link _bfd_generic_final_link |
| 1496 | #define oasys_bfd_link_split_section _bfd_generic_link_split_section |
| 1497 | |
| 1498 | /*SUPPRESS 460 */ |
| 1499 | const bfd_target oasys_vec = |
| 1500 | { |
| 1501 | "oasys", /* name */ |
| 1502 | bfd_target_oasys_flavour, |
| 1503 | BFD_ENDIAN_BIG, /* target byte order */ |
| 1504 | BFD_ENDIAN_BIG, /* target headers byte order */ |
| 1505 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 1506 | HAS_LINENO | HAS_DEBUG | |
| 1507 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), |
| 1508 | (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS |
| 1509 | | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 1510 | 0, /* leading underscore */ |
| 1511 | ' ', /* ar_pad_char */ |
| 1512 | 16, /* ar_max_namelen */ |
| 1513 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 1514 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 1515 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ |
| 1516 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 1517 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 1518 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ |
| 1519 | |
| 1520 | {_bfd_dummy_target, |
| 1521 | oasys_object_p, /* bfd_check_format */ |
| 1522 | oasys_archive_p, |
| 1523 | _bfd_dummy_target, |
| 1524 | }, |
| 1525 | { /* bfd_set_format */ |
| 1526 | bfd_false, |
| 1527 | oasys_mkobject, |
| 1528 | _bfd_generic_mkarchive, |
| 1529 | bfd_false |
| 1530 | }, |
| 1531 | { /* bfd_write_contents */ |
| 1532 | bfd_false, |
| 1533 | oasys_write_object_contents, |
| 1534 | _bfd_write_archive_contents, |
| 1535 | bfd_false, |
| 1536 | }, |
| 1537 | |
| 1538 | BFD_JUMP_TABLE_GENERIC (oasys), |
| 1539 | BFD_JUMP_TABLE_COPY (_bfd_generic), |
| 1540 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
| 1541 | BFD_JUMP_TABLE_ARCHIVE (oasys), |
| 1542 | BFD_JUMP_TABLE_SYMBOLS (oasys), |
| 1543 | BFD_JUMP_TABLE_RELOCS (oasys), |
| 1544 | BFD_JUMP_TABLE_WRITE (oasys), |
| 1545 | BFD_JUMP_TABLE_LINK (oasys), |
| 1546 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 1547 | |
| 1548 | NULL, |
| 1549 | |
| 1550 | (PTR) 0 |
| 1551 | }; |