| 1 | # This shell script emits a C file. -*- C -*- |
| 2 | # Copyright 1991, 1993, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
| 3 | # 2004, 2005, 2007, 2008 |
| 4 | # Free Software Foundation, Inc. |
| 5 | # |
| 6 | # This file is part of the GNU Binutils. |
| 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 3 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., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | # MA 02110-1301, USA. |
| 22 | # |
| 23 | |
| 24 | # This file is sourced from elf32.em, and defines extra arm-elf |
| 25 | # specific routines. |
| 26 | # |
| 27 | test -z "$TARGET2_TYPE" && TARGET2_TYPE="rel" |
| 28 | fragment <<EOF |
| 29 | |
| 30 | #include "ldctor.h" |
| 31 | #include "elf/arm.h" |
| 32 | |
| 33 | static char *thumb_entry_symbol = NULL; |
| 34 | static bfd *bfd_for_interwork; |
| 35 | static int byteswap_code = 0; |
| 36 | static int target1_is_rel = 0${TARGET1_IS_REL}; |
| 37 | static char *target2_type = "${TARGET2_TYPE}"; |
| 38 | static int fix_v4bx = 0; |
| 39 | static int use_blx = 0; |
| 40 | static bfd_arm_vfp11_fix vfp11_denorm_fix = BFD_ARM_VFP11_FIX_DEFAULT; |
| 41 | static int no_enum_size_warning = 0; |
| 42 | static int pic_veneer = 0; |
| 43 | |
| 44 | static void |
| 45 | gld${EMULATION_NAME}_before_parse (void) |
| 46 | { |
| 47 | #ifndef TARGET_ /* I.e., if not generic. */ |
| 48 | ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown); |
| 49 | #endif /* not TARGET_ */ |
| 50 | config.dynamic_link = ${DYNAMIC_LINK-TRUE}; |
| 51 | config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`; |
| 52 | } |
| 53 | |
| 54 | static void |
| 55 | arm_elf_after_open (void) |
| 56 | { |
| 57 | if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL) |
| 58 | { |
| 59 | /* The arm backend needs special fields in the output hash structure. |
| 60 | These will only be created if the output format is an arm format, |
| 61 | hence we do not support linking and changing output formats at the |
| 62 | same time. Use a link followed by objcopy to change output formats. */ |
| 63 | einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n"); |
| 64 | return; |
| 65 | } |
| 66 | |
| 67 | { |
| 68 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 69 | { |
| 70 | bfd_elf32_arm_add_glue_sections_to_bfd (is->the_bfd, & link_info); |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | /* Call the standard elf routine. */ |
| 75 | gld${EMULATION_NAME}_after_open (); |
| 76 | } |
| 77 | |
| 78 | static void |
| 79 | arm_elf_set_bfd_for_interworking (lang_statement_union_type *statement) |
| 80 | { |
| 81 | if (statement->header.type == lang_input_section_enum) |
| 82 | { |
| 83 | asection *i = statement->input_section.section; |
| 84 | |
| 85 | if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag |
| 86 | && (i->flags & SEC_EXCLUDE) == 0) |
| 87 | { |
| 88 | asection *output_section = i->output_section; |
| 89 | |
| 90 | ASSERT (output_section->owner == link_info.output_bfd); |
| 91 | |
| 92 | /* Don't attach the interworking stubs to a dynamic object, to |
| 93 | an empty section, etc. */ |
| 94 | if ((output_section->flags & SEC_HAS_CONTENTS) != 0 |
| 95 | && (i->flags & SEC_NEVER_LOAD) == 0 |
| 96 | && ! (i->owner->flags & DYNAMIC) |
| 97 | && ! i->owner->output_has_begun) |
| 98 | { |
| 99 | bfd_for_interwork = i->owner; |
| 100 | bfd_for_interwork->output_has_begun = TRUE; |
| 101 | } |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | static void |
| 107 | arm_elf_before_allocation (void) |
| 108 | { |
| 109 | bfd *tem; |
| 110 | |
| 111 | if (link_info.input_bfds != NULL) |
| 112 | { |
| 113 | /* The interworking bfd must be the last one in the link. */ |
| 114 | bfd_for_interwork = NULL; |
| 115 | for (tem = link_info.input_bfds; tem != NULL; tem = tem->link_next) |
| 116 | tem->output_has_begun = FALSE; |
| 117 | |
| 118 | lang_for_each_statement (arm_elf_set_bfd_for_interworking); |
| 119 | for (tem = link_info.input_bfds; tem != NULL; tem = tem->link_next) |
| 120 | tem->output_has_begun = FALSE; |
| 121 | |
| 122 | /* If bfd_for_interwork is NULL, then there are no loadable sections |
| 123 | with real contents to be linked, so we are not going to have to |
| 124 | create any interworking stubs, so it is OK not to call |
| 125 | bfd_elf32_arm_get_bfd_for_interworking. */ |
| 126 | if (bfd_for_interwork != NULL) |
| 127 | bfd_elf32_arm_get_bfd_for_interworking (bfd_for_interwork, &link_info); |
| 128 | } |
| 129 | |
| 130 | bfd_elf32_arm_set_byteswap_code (&link_info, byteswap_code); |
| 131 | |
| 132 | /* Choose type of VFP11 erratum fix, or warn if specified fix is unnecessary |
| 133 | due to architecture version. */ |
| 134 | bfd_elf32_arm_set_vfp11_fix (link_info.output_bfd, &link_info); |
| 135 | |
| 136 | /* We should be able to set the size of the interworking stub section. We |
| 137 | can't do it until later if we have dynamic sections, though. */ |
| 138 | if (! elf_hash_table (&link_info)->dynamic_sections_created) |
| 139 | { |
| 140 | /* Here we rummage through the found bfds to collect glue information. */ |
| 141 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 142 | { |
| 143 | /* Initialise mapping tables for code/data. */ |
| 144 | bfd_elf32_arm_init_maps (is->the_bfd); |
| 145 | |
| 146 | if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, |
| 147 | &link_info) |
| 148 | || !bfd_elf32_arm_vfp11_erratum_scan (is->the_bfd, &link_info)) |
| 149 | /* xgettext:c-format */ |
| 150 | einfo (_("Errors encountered processing file %s"), is->filename); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | /* Call the standard elf routine. */ |
| 155 | gld${EMULATION_NAME}_before_allocation (); |
| 156 | |
| 157 | /* We have seen it all. Allocate it, and carry on. */ |
| 158 | bfd_elf32_arm_allocate_interworking_sections (& link_info); |
| 159 | } |
| 160 | |
| 161 | static void |
| 162 | arm_elf_after_allocation (void) |
| 163 | { |
| 164 | /* Call the standard elf routine. */ |
| 165 | after_allocation_default (); |
| 166 | |
| 167 | { |
| 168 | LANG_FOR_EACH_INPUT_STATEMENT (is) |
| 169 | { |
| 170 | /* Figure out where VFP11 erratum veneers (and the labels returning |
| 171 | from same) have been placed. */ |
| 172 | bfd_elf32_arm_vfp11_fix_veneer_locations (is->the_bfd, &link_info); |
| 173 | } |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | /* Fake input file for stubs. */ |
| 178 | static lang_input_statement_type *stub_file; |
| 179 | |
| 180 | /* Whether we need to call gldarm_layout_sections_again. */ |
| 181 | static int need_laying_out = 0; |
| 182 | |
| 183 | /* Maximum size of a group of input sections that can be handled by |
| 184 | one stub section. A value of +/-1 indicates the bfd back-end |
| 185 | should use a suitable default size. */ |
| 186 | static bfd_signed_vma group_size = 1; |
| 187 | |
| 188 | struct hook_stub_info |
| 189 | { |
| 190 | lang_statement_list_type add; |
| 191 | asection *input_section; |
| 192 | }; |
| 193 | |
| 194 | /* Traverse the linker tree to find the spot where the stub goes. */ |
| 195 | |
| 196 | static bfd_boolean |
| 197 | hook_in_stub (struct hook_stub_info *info, lang_statement_union_type **lp) |
| 198 | { |
| 199 | lang_statement_union_type *l; |
| 200 | bfd_boolean ret; |
| 201 | |
| 202 | for (; (l = *lp) != NULL; lp = &l->header.next) |
| 203 | { |
| 204 | switch (l->header.type) |
| 205 | { |
| 206 | case lang_constructors_statement_enum: |
| 207 | ret = hook_in_stub (info, &constructor_list.head); |
| 208 | if (ret) |
| 209 | return ret; |
| 210 | break; |
| 211 | |
| 212 | case lang_output_section_statement_enum: |
| 213 | ret = hook_in_stub (info, |
| 214 | &l->output_section_statement.children.head); |
| 215 | if (ret) |
| 216 | return ret; |
| 217 | break; |
| 218 | |
| 219 | case lang_wild_statement_enum: |
| 220 | ret = hook_in_stub (info, &l->wild_statement.children.head); |
| 221 | if (ret) |
| 222 | return ret; |
| 223 | break; |
| 224 | |
| 225 | case lang_group_statement_enum: |
| 226 | ret = hook_in_stub (info, &l->group_statement.children.head); |
| 227 | if (ret) |
| 228 | return ret; |
| 229 | break; |
| 230 | |
| 231 | case lang_input_section_enum: |
| 232 | if (l->input_section.section == info->input_section) |
| 233 | { |
| 234 | /* We've found our section. Insert the stub immediately |
| 235 | before its associated input section. */ |
| 236 | *lp = info->add.head; |
| 237 | *(info->add.tail) = l; |
| 238 | return TRUE; |
| 239 | } |
| 240 | break; |
| 241 | |
| 242 | case lang_data_statement_enum: |
| 243 | case lang_reloc_statement_enum: |
| 244 | case lang_object_symbols_statement_enum: |
| 245 | case lang_output_statement_enum: |
| 246 | case lang_target_statement_enum: |
| 247 | case lang_input_statement_enum: |
| 248 | case lang_assignment_statement_enum: |
| 249 | case lang_padding_statement_enum: |
| 250 | case lang_address_statement_enum: |
| 251 | case lang_fill_statement_enum: |
| 252 | break; |
| 253 | |
| 254 | default: |
| 255 | FAIL (); |
| 256 | break; |
| 257 | } |
| 258 | } |
| 259 | return FALSE; |
| 260 | } |
| 261 | |
| 262 | |
| 263 | /* Call-back for elf32_arm_size_stubs. */ |
| 264 | |
| 265 | /* Create a new stub section, and arrange for it to be linked |
| 266 | immediately before INPUT_SECTION. */ |
| 267 | |
| 268 | static asection * |
| 269 | elf32_arm_add_stub_section (const char *stub_sec_name, |
| 270 | asection *input_section) |
| 271 | { |
| 272 | asection *stub_sec; |
| 273 | flagword flags; |
| 274 | asection *output_section; |
| 275 | const char *secname; |
| 276 | lang_output_section_statement_type *os; |
| 277 | struct hook_stub_info info; |
| 278 | |
| 279 | stub_sec = bfd_make_section_anyway (stub_file->the_bfd, stub_sec_name); |
| 280 | if (stub_sec == NULL) |
| 281 | goto err_ret; |
| 282 | |
| 283 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE |
| 284 | | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP); |
| 285 | if (!bfd_set_section_flags (stub_file->the_bfd, stub_sec, flags)) |
| 286 | goto err_ret; |
| 287 | |
| 288 | bfd_set_section_alignment (stub_file->the_bfd, stub_sec, 3); |
| 289 | |
| 290 | output_section = input_section->output_section; |
| 291 | secname = bfd_get_section_name (output_section->owner, output_section); |
| 292 | os = lang_output_section_find (secname); |
| 293 | |
| 294 | info.input_section = input_section; |
| 295 | lang_list_init (&info.add); |
| 296 | lang_add_section (&info.add, stub_sec, os); |
| 297 | |
| 298 | if (info.add.head == NULL) |
| 299 | goto err_ret; |
| 300 | |
| 301 | if (hook_in_stub (&info, &os->children.head)) |
| 302 | return stub_sec; |
| 303 | |
| 304 | err_ret: |
| 305 | einfo ("%X%P: can not make stub section: %E\n"); |
| 306 | return NULL; |
| 307 | } |
| 308 | |
| 309 | /* Another call-back for elf_arm_size_stubs. */ |
| 310 | |
| 311 | static void |
| 312 | gldarm_layout_sections_again (void) |
| 313 | { |
| 314 | /* If we have changed sizes of the stub sections, then we need |
| 315 | to recalculate all the section offsets. This may mean we need to |
| 316 | add even more stubs. */ |
| 317 | gld${EMULATION_NAME}_map_segments (TRUE); |
| 318 | need_laying_out = -1; |
| 319 | } |
| 320 | |
| 321 | static void |
| 322 | build_section_lists (lang_statement_union_type *statement) |
| 323 | { |
| 324 | if (statement->header.type == lang_input_section_enum) |
| 325 | { |
| 326 | asection *i = statement->input_section.section; |
| 327 | |
| 328 | if (!((lang_input_statement_type *) i->owner->usrdata)->just_syms_flag |
| 329 | && (i->flags & SEC_EXCLUDE) == 0 |
| 330 | && i->output_section != NULL |
| 331 | && i->output_section->owner == link_info.output_bfd) |
| 332 | elf32_arm_next_input_section (& link_info, i); |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | static void |
| 337 | gld${EMULATION_NAME}_finish (void) |
| 338 | { |
| 339 | struct bfd_link_hash_entry * h; |
| 340 | |
| 341 | /* bfd_elf32_discard_info just plays with debugging sections, |
| 342 | ie. doesn't affect any code, so we can delay resizing the |
| 343 | sections. It's likely we'll resize everything in the process of |
| 344 | adding stubs. */ |
| 345 | if (bfd_elf_discard_info (link_info.output_bfd, & link_info)) |
| 346 | need_laying_out = 1; |
| 347 | |
| 348 | /* If generating a relocatable output file, then we don't |
| 349 | have to examine the relocs. */ |
| 350 | if (stub_file != NULL && !link_info.relocatable) |
| 351 | { |
| 352 | int ret = elf32_arm_setup_section_lists (link_info.output_bfd, & link_info); |
| 353 | |
| 354 | if (ret != 0) |
| 355 | { |
| 356 | if (ret < 0) |
| 357 | { |
| 358 | einfo ("%X%P: can not size stub section: %E\n"); |
| 359 | return; |
| 360 | } |
| 361 | |
| 362 | lang_for_each_statement (build_section_lists); |
| 363 | |
| 364 | /* Call into the BFD backend to do the real work. */ |
| 365 | if (! elf32_arm_size_stubs (link_info.output_bfd, |
| 366 | stub_file->the_bfd, |
| 367 | & link_info, |
| 368 | group_size, |
| 369 | & elf32_arm_add_stub_section, |
| 370 | & gldarm_layout_sections_again)) |
| 371 | { |
| 372 | einfo ("%X%P: can not size stub section: %E\n"); |
| 373 | return; |
| 374 | } |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | if (need_laying_out != -1) |
| 379 | gld${EMULATION_NAME}_map_segments (need_laying_out); |
| 380 | |
| 381 | if (! link_info.relocatable) |
| 382 | { |
| 383 | /* Now build the linker stubs. */ |
| 384 | if (stub_file->the_bfd->sections != NULL) |
| 385 | { |
| 386 | if (! elf32_arm_build_stubs (& link_info)) |
| 387 | einfo ("%X%P: can not build stubs: %E\n"); |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | finish_default (); |
| 392 | |
| 393 | if (thumb_entry_symbol) |
| 394 | { |
| 395 | h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, |
| 396 | FALSE, FALSE, TRUE); |
| 397 | } |
| 398 | else |
| 399 | { |
| 400 | struct elf_link_hash_entry * eh; |
| 401 | |
| 402 | if (!entry_symbol.name) |
| 403 | return; |
| 404 | |
| 405 | h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name, |
| 406 | FALSE, FALSE, TRUE); |
| 407 | eh = (struct elf_link_hash_entry *)h; |
| 408 | if (!h || ELF_ST_TYPE(eh->type) != STT_ARM_TFUNC) |
| 409 | return; |
| 410 | } |
| 411 | |
| 412 | |
| 413 | if (h != (struct bfd_link_hash_entry *) NULL |
| 414 | && (h->type == bfd_link_hash_defined |
| 415 | || h->type == bfd_link_hash_defweak) |
| 416 | && h->u.def.section->output_section != NULL) |
| 417 | { |
| 418 | static char buffer[32]; |
| 419 | bfd_vma val; |
| 420 | |
| 421 | /* Special procesing is required for a Thumb entry symbol. The |
| 422 | bottom bit of its address must be set. */ |
| 423 | val = (h->u.def.value |
| 424 | + bfd_get_section_vma (link_info.output_bfd, |
| 425 | h->u.def.section->output_section) |
| 426 | + h->u.def.section->output_offset); |
| 427 | |
| 428 | val |= 1; |
| 429 | |
| 430 | /* Now convert this value into a string and store it in entry_symbol |
| 431 | where the lang_finish() function will pick it up. */ |
| 432 | buffer[0] = '0'; |
| 433 | buffer[1] = 'x'; |
| 434 | |
| 435 | sprintf_vma (buffer + 2, val); |
| 436 | |
| 437 | if (thumb_entry_symbol != NULL && entry_symbol.name != NULL |
| 438 | && entry_from_cmdline) |
| 439 | einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), |
| 440 | thumb_entry_symbol, entry_symbol.name); |
| 441 | entry_symbol.name = buffer; |
| 442 | } |
| 443 | else |
| 444 | einfo (_("%P: warning: cannot find thumb start symbol %s\n"), |
| 445 | thumb_entry_symbol); |
| 446 | } |
| 447 | |
| 448 | /* This is a convenient point to tell BFD about target specific flags. |
| 449 | After the output has been created, but before inputs are read. */ |
| 450 | static void |
| 451 | arm_elf_create_output_section_statements (void) |
| 452 | { |
| 453 | bfd_elf32_arm_set_target_relocs (link_info.output_bfd, &link_info, |
| 454 | target1_is_rel, |
| 455 | target2_type, fix_v4bx, use_blx, |
| 456 | vfp11_denorm_fix, no_enum_size_warning, |
| 457 | pic_veneer); |
| 458 | |
| 459 | stub_file = lang_add_input_file ("linker stubs", |
| 460 | lang_input_file_is_fake_enum, |
| 461 | NULL); |
| 462 | stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd); |
| 463 | if (stub_file->the_bfd == NULL |
| 464 | || ! bfd_set_arch_mach (stub_file->the_bfd, |
| 465 | bfd_get_arch (link_info.output_bfd), |
| 466 | bfd_get_mach (link_info.output_bfd))) |
| 467 | { |
| 468 | einfo ("%X%P: can not create BFD %E\n"); |
| 469 | return; |
| 470 | } |
| 471 | |
| 472 | stub_file->the_bfd->flags |= BFD_LINKER_CREATED; |
| 473 | ldlang_add_file (stub_file); |
| 474 | } |
| 475 | |
| 476 | /* Avoid processing the fake stub_file in vercheck, stat_needed and |
| 477 | check_needed routines. */ |
| 478 | |
| 479 | static void (*real_func) (lang_input_statement_type *); |
| 480 | |
| 481 | static void arm_for_each_input_file_wrapper (lang_input_statement_type *l) |
| 482 | { |
| 483 | if (l != stub_file) |
| 484 | (*real_func) (l); |
| 485 | } |
| 486 | |
| 487 | static void |
| 488 | arm_lang_for_each_input_file (void (*func) (lang_input_statement_type *)) |
| 489 | { |
| 490 | real_func = func; |
| 491 | lang_for_each_input_file (&arm_for_each_input_file_wrapper); |
| 492 | } |
| 493 | |
| 494 | #define lang_for_each_input_file arm_lang_for_each_input_file |
| 495 | |
| 496 | EOF |
| 497 | |
| 498 | # Define some shell vars to insert bits of code into the standard elf |
| 499 | # parse_args and list_options functions. |
| 500 | # |
| 501 | PARSE_AND_LIST_PROLOGUE=' |
| 502 | #define OPTION_THUMB_ENTRY 301 |
| 503 | #define OPTION_BE8 302 |
| 504 | #define OPTION_TARGET1_REL 303 |
| 505 | #define OPTION_TARGET1_ABS 304 |
| 506 | #define OPTION_TARGET2 305 |
| 507 | #define OPTION_FIX_V4BX 306 |
| 508 | #define OPTION_USE_BLX 307 |
| 509 | #define OPTION_VFP11_DENORM_FIX 308 |
| 510 | #define OPTION_NO_ENUM_SIZE_WARNING 309 |
| 511 | #define OPTION_PIC_VENEER 310 |
| 512 | #define OPTION_FIX_V4BX_INTERWORKING 311 |
| 513 | #define OPTION_STUBGROUP_SIZE 312 |
| 514 | ' |
| 515 | |
| 516 | PARSE_AND_LIST_SHORTOPTS=p |
| 517 | |
| 518 | PARSE_AND_LIST_LONGOPTS=' |
| 519 | { "no-pipeline-knowledge", no_argument, NULL, '\'p\''}, |
| 520 | { "thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, |
| 521 | { "be8", no_argument, NULL, OPTION_BE8}, |
| 522 | { "target1-rel", no_argument, NULL, OPTION_TARGET1_REL}, |
| 523 | { "target1-abs", no_argument, NULL, OPTION_TARGET1_ABS}, |
| 524 | { "target2", required_argument, NULL, OPTION_TARGET2}, |
| 525 | { "fix-v4bx", no_argument, NULL, OPTION_FIX_V4BX}, |
| 526 | { "fix-v4bx-interworking", no_argument, NULL, OPTION_FIX_V4BX_INTERWORKING}, |
| 527 | { "use-blx", no_argument, NULL, OPTION_USE_BLX}, |
| 528 | { "vfp11-denorm-fix", required_argument, NULL, OPTION_VFP11_DENORM_FIX}, |
| 529 | { "no-enum-size-warning", no_argument, NULL, OPTION_NO_ENUM_SIZE_WARNING}, |
| 530 | { "pic-veneer", no_argument, NULL, OPTION_PIC_VENEER}, |
| 531 | { "stub-group-size", required_argument, NULL, OPTION_STUBGROUP_SIZE }, |
| 532 | ' |
| 533 | |
| 534 | PARSE_AND_LIST_OPTIONS=' |
| 535 | fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n")); |
| 536 | fprintf (file, _(" --be8 Oputput BE8 format image\n")); |
| 537 | fprintf (file, _(" --target1=rel Interpret R_ARM_TARGET1 as R_ARM_REL32\n")); |
| 538 | fprintf (file, _(" --target1=abs Interpret R_ARM_TARGET1 as R_ARM_ABS32\n")); |
| 539 | fprintf (file, _(" --target2=<type> Specify definition of R_ARM_TARGET2\n")); |
| 540 | fprintf (file, _(" --fix-v4bx Rewrite BX rn as MOV pc, rn for ARMv4\n")); |
| 541 | fprintf (file, _(" --fix-v4bx-interworking Rewrite BX rn branch to ARMv4 interworking veneer\n")); |
| 542 | fprintf (file, _(" --use-blx Enable use of BLX instructions\n")); |
| 543 | fprintf (file, _(" --vfp11-denorm-fix Specify how to fix VFP11 denorm erratum\n")); |
| 544 | fprintf (file, _(" --no-enum-size-warning Don'\''t warn about objects with incompatible" |
| 545 | " enum sizes\n")); |
| 546 | fprintf (file, _(" --pic-veneer Always generate PIC interworking veneers\n")); |
| 547 | fprintf (file, _("\ |
| 548 | --stub-group-size=N Maximum size of a group of input sections that can be\n\ |
| 549 | handled by one stub section. A negative value\n\ |
| 550 | locates all stubs before their branches (with a\n\ |
| 551 | group size of -N), while a positive value allows\n\ |
| 552 | two groups of input sections, one before, and one\n\ |
| 553 | after each stub section. Values of +/-1 indicate\n\ |
| 554 | the linker should choose suitable defaults.\n" |
| 555 | )); |
| 556 | ' |
| 557 | |
| 558 | PARSE_AND_LIST_ARGS_CASES=' |
| 559 | case '\'p\'': |
| 560 | /* Only here for backwards compatibility. */ |
| 561 | break; |
| 562 | |
| 563 | case OPTION_THUMB_ENTRY: |
| 564 | thumb_entry_symbol = optarg; |
| 565 | break; |
| 566 | |
| 567 | case OPTION_BE8: |
| 568 | byteswap_code = 1; |
| 569 | break; |
| 570 | |
| 571 | case OPTION_TARGET1_REL: |
| 572 | target1_is_rel = 1; |
| 573 | break; |
| 574 | |
| 575 | case OPTION_TARGET1_ABS: |
| 576 | target1_is_rel = 0; |
| 577 | break; |
| 578 | |
| 579 | case OPTION_TARGET2: |
| 580 | target2_type = optarg; |
| 581 | break; |
| 582 | |
| 583 | case OPTION_FIX_V4BX: |
| 584 | fix_v4bx = 1; |
| 585 | break; |
| 586 | |
| 587 | case OPTION_FIX_V4BX_INTERWORKING: |
| 588 | fix_v4bx = 2; |
| 589 | break; |
| 590 | |
| 591 | case OPTION_USE_BLX: |
| 592 | use_blx = 1; |
| 593 | break; |
| 594 | |
| 595 | case OPTION_VFP11_DENORM_FIX: |
| 596 | if (strcmp (optarg, "none") == 0) |
| 597 | vfp11_denorm_fix = BFD_ARM_VFP11_FIX_NONE; |
| 598 | else if (strcmp (optarg, "scalar") == 0) |
| 599 | vfp11_denorm_fix = BFD_ARM_VFP11_FIX_SCALAR; |
| 600 | else if (strcmp (optarg, "vector") == 0) |
| 601 | vfp11_denorm_fix = BFD_ARM_VFP11_FIX_VECTOR; |
| 602 | else |
| 603 | einfo (_("Unrecognized VFP11 fix type '\''%s'\''.\n"), optarg); |
| 604 | break; |
| 605 | |
| 606 | case OPTION_NO_ENUM_SIZE_WARNING: |
| 607 | no_enum_size_warning = 1; |
| 608 | break; |
| 609 | |
| 610 | case OPTION_PIC_VENEER: |
| 611 | pic_veneer = 1; |
| 612 | break; |
| 613 | |
| 614 | case OPTION_STUBGROUP_SIZE: |
| 615 | { |
| 616 | const char *end; |
| 617 | |
| 618 | group_size = bfd_scan_vma (optarg, &end, 0); |
| 619 | if (*end) |
| 620 | einfo (_("%P%F: invalid number `%s'\''\n"), optarg); |
| 621 | } |
| 622 | break; |
| 623 | ' |
| 624 | |
| 625 | # We have our own after_open and before_allocation functions, but they call |
| 626 | # the standard routines, so give them a different name. |
| 627 | LDEMUL_AFTER_OPEN=arm_elf_after_open |
| 628 | LDEMUL_BEFORE_ALLOCATION=arm_elf_before_allocation |
| 629 | LDEMUL_AFTER_ALLOCATION=arm_elf_after_allocation |
| 630 | LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=arm_elf_create_output_section_statements |
| 631 | |
| 632 | # Replace the elf before_parse function with our own. |
| 633 | LDEMUL_BEFORE_PARSE=gld"${EMULATION_NAME}"_before_parse |
| 634 | |
| 635 | # Call the extra arm-elf function |
| 636 | LDEMUL_FINISH=gld${EMULATION_NAME}_finish |