1# This shell script emits a C file. -*- C -*- 2# It does some substitutions. 3fragment <<EOF 4/* This file is is generated by a shell script. DO NOT EDIT! */ 5 6/* Emulate the original gld for the given ${EMULATION_NAME} 7 Copyright (C) 2014-2018 Free Software Foundation, Inc. 8 Written by Steve Chamberlain steve@cygnus.com 9 Extended for the MSP430 by Nick Clifton nickc@redhat.com 10 11 This file is part of the GNU Binutils. 12 13 This program is free software; you can redistribute it and/or modify 14 it under the terms of the GNU General Public License as published by 15 the Free Software Foundation; either version 3 of the License, or 16 (at your option) any later version. 17 18 This program is distributed in the hope that it will be useful, 19 but WITHOUT ANY WARRANTY; without even the implied warranty of 20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 GNU General Public License for more details. 22 23 You should have received a copy of the GNU General Public License 24 along with this program; if not, write to the Free Software 25 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 26 MA 02110-1301, USA. */ 27 28#define TARGET_IS_${EMULATION_NAME} 29 30#include "sysdep.h" 31#include "bfd.h" 32#include "bfdlink.h" 33 34#include "ld.h" 35#include "getopt.h" 36#include "ldmain.h" 37#include "ldmisc.h" 38#include "ldexp.h" 39#include "ldlang.h" 40#include "ldfile.h" 41#include "ldemul.h" 42#include "libiberty.h" 43#include <ldgram.h> 44 45enum regions 46{ 47 REGION_NONE = 0, 48 REGION_LOWER, 49 REGION_UPPER, 50 REGION_EITHER = 3, 51}; 52 53enum either_placement_stage 54{ 55 LOWER_TO_UPPER, 56 UPPER_TO_LOWER, 57}; 58 59enum { ROM, RAM }; 60 61static int data_region = REGION_NONE; 62static int code_region = REGION_NONE; 63static bfd_boolean disable_sec_transformation = FALSE; 64 65#define MAX_PREFIX_LENGTH 7 66 67EOF 68 69# Import any needed special functions and/or overrides. 70# 71if test -n "$EXTRA_EM_FILE" ; then 72 source_em ${srcdir}/emultempl/${EXTRA_EM_FILE}.em 73fi 74 75if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then 76fragment <<EOF 77 78static void 79gld${EMULATION_NAME}_before_parse (void) 80{ 81#ifndef TARGET_ /* I.e., if not generic. */ 82 ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown); 83#endif /* not TARGET_ */ 84 85 /* The MSP430 port *needs* linker relaxtion in order to cope with large 86 functions where conditional branches do not fit into a +/- 1024 byte range. */ 87 if (!bfd_link_relocatable (&link_info)) 88 TARGET_ENABLE_RELAXATION; 89} 90 91EOF 92fi 93 94if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then 95fragment <<EOF 96 97static char * 98gld${EMULATION_NAME}_get_script (int *isfile) 99EOF 100 101if test x"$COMPILE_IN" = xyes 102then 103# Scripts compiled in. 104 105# sed commands to quote an ld script as a C string. 106sc="-f stringify.sed" 107 108fragment <<EOF 109{ 110 *isfile = 0; 111 112 if (bfd_link_relocatable (&link_info) && config.build_constructors) 113 return 114EOF 115sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c 116echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c 117sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c 118echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c 119sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c 120echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c 121sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c 122echo ' ; else return' >> e${EMULATION_NAME}.c 123sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c 124echo '; }' >> e${EMULATION_NAME}.c 125 126else 127# Scripts read from the filesystem. 128 129fragment <<EOF 130{ 131 *isfile = 1; 132 133 if (bfd_link_relocatable (&link_info) && config.build_constructors) 134 return "ldscripts/${EMULATION_NAME}.xu"; 135 else if (bfd_link_relocatable (&link_info)) 136 return "ldscripts/${EMULATION_NAME}.xr"; 137 else if (!config.text_read_only) 138 return "ldscripts/${EMULATION_NAME}.xbn"; 139 else if (!config.magic_demand_paged) 140 return "ldscripts/${EMULATION_NAME}.xn"; 141 else 142 return "ldscripts/${EMULATION_NAME}.x"; 143} 144EOF 145fi 146fi 147 148if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then 149fragment <<EOF 150 151static unsigned int 152data_statement_size (lang_data_statement_type *d) 153{ 154 unsigned int size = 0; 155 switch (d->type) 156 { 157 case QUAD: 158 case SQUAD: 159 size = QUAD_SIZE; 160 break; 161 case LONG: 162 size = LONG_SIZE; 163 break; 164 case SHORT: 165 size = SHORT_SIZE; 166 break; 167 case BYTE: 168 size = BYTE_SIZE; 169 break; 170 default: 171 einfo (_("%P: error: unhandled data_statement size\n")); 172 FAIL (); 173 } 174 return size; 175} 176 177/* Helper function for place_orphan that computes the size 178 of sections already mapped to the given statement. */ 179 180static bfd_size_type 181scan_children (lang_statement_union_type * l) 182{ 183 bfd_size_type amount = 0; 184 185 while (l != NULL) 186 { 187 switch (l->header.type) 188 { 189 case lang_input_section_enum: 190 if (l->input_section.section->flags & SEC_ALLOC) 191 amount += l->input_section.section->size; 192 break; 193 194 case lang_constructors_statement_enum: 195 case lang_assignment_statement_enum: 196 case lang_padding_statement_enum: 197 break; 198 199 case lang_wild_statement_enum: 200 amount += scan_children (l->wild_statement.children.head); 201 break; 202 203 case lang_data_statement_enum: 204 amount += data_statement_size (&l->data_statement); 205 break; 206 207 default: 208 fprintf (stderr, "msp430 orphan placer: unhandled lang type %d\n", l->header.type); 209 break; 210 } 211 212 l = l->header.next; 213 } 214 215 return amount; 216} 217 218/* Place an orphan section. We use this to put .either sections 219 into either their lower or their upper equivalents. */ 220 221static lang_output_section_statement_type * 222gld${EMULATION_NAME}_place_orphan (asection * s, 223 const char * secname, 224 int constraint) 225{ 226 char * lower_name; 227 char * upper_name; 228 char * name; 229 char * buf = NULL; 230 lang_output_section_statement_type * lower; 231 lang_output_section_statement_type * upper; 232 233 if ((s->flags & SEC_ALLOC) == 0) 234 return NULL; 235 236 if (bfd_link_relocatable (&link_info)) 237 return NULL; 238 239 /* If constraints are involved let the linker handle the placement normally. */ 240 if (constraint != 0) 241 return NULL; 242 243 /* We only need special handling for .either sections. */ 244 if (strncmp (secname, ".either.", 8) != 0) 245 return NULL; 246 247 /* Skip the .either prefix. */ 248 secname += 7; 249 250 /* Compute the names of the corresponding upper and lower 251 sections. If the input section name contains another period, 252 only use the part of the name before the second dot. */ 253 if (strchr (secname + 1, '.') != NULL) 254 { 255 buf = name = xstrdup (secname); 256 257 * strchr (name + 1, '.') = 0; 258 } 259 else 260 name = (char *) secname; 261 262 lower_name = concat (".lower", name, NULL); 263 upper_name = concat (".upper", name, NULL); 264 265 /* Find the corresponding lower and upper sections. */ 266 lower = lang_output_section_find (lower_name); 267 upper = lang_output_section_find (upper_name); 268 269 if (lower == NULL && upper == NULL) 270 { 271 einfo (_("%P: error: no section named %s or %s in linker script\n"), 272 lower_name, upper_name); 273 goto end; 274 } 275 else if (lower == NULL) 276 { 277 lower = lang_output_section_find (name); 278 if (lower == NULL) 279 { 280 einfo (_("%P: error: no section named %s in linker script\n"), name); 281 goto end; 282 } 283 } 284 285 /* Always place orphaned sections in lower. Optimal placement of either 286 sections is performed later, once section sizes have been finalized. */ 287 lang_add_section (& lower->children, s, NULL, lower); 288 end: 289 free (upper_name); 290 free (lower_name); 291 if (buf) 292 free (buf); 293 return lower; 294} 295EOF 296fi 297 298fragment <<EOF 299 300static bfd_boolean 301change_output_section (lang_statement_union_type ** head, 302 asection *s, 303 lang_output_section_statement_type * new_output_section) 304{ 305 asection *is; 306 lang_statement_union_type * prev = NULL; 307 lang_statement_union_type * curr; 308 309 curr = *head; 310 while (curr != NULL) 311 { 312 switch (curr->header.type) 313 { 314 case lang_input_section_enum: 315 is = curr->input_section.section; 316 if (is == s) 317 { 318 s->output_section = NULL; 319 lang_add_section (& (new_output_section->children), s, NULL, 320 new_output_section); 321 /* Remove the section from the old output section. */ 322 if (prev == NULL) 323 *head = curr->header.next; 324 else 325 prev->header.next = curr->header.next; 326 return TRUE; 327 } 328 break; 329 case lang_wild_statement_enum: 330 if (change_output_section (&(curr->wild_statement.children.head), 331 s, new_output_section)) 332 return TRUE; 333 break; 334 default: 335 break; 336 } 337 prev = curr; 338 curr = curr->header.next; 339 } 340 return FALSE; 341} 342 343static void 344move_prefixed_section (asection *s, char *new_name, 345 lang_output_section_statement_type * new_output_sec) 346{ 347 s->name = new_name; 348 if (s->output_section == NULL) 349 lang_add_section (& (new_output_sec->children), s, NULL, new_output_sec); 350 else 351 { 352 lang_output_section_statement_type * curr_output_sec 353 = lang_output_section_find (s->output_section->name); 354 change_output_section (&(curr_output_sec->children.head), s, 355 new_output_sec); 356 } 357} 358 359static void 360add_region_prefix (bfd *abfd, asection *s, 361 ATTRIBUTE_UNUSED void *unused) 362{ 363 const char *curr_name = bfd_get_section_name (abfd, s); 364 char * base_name; 365 char * new_input_sec_name = NULL; 366 char * new_output_sec_name = NULL; 367 int region = REGION_NONE; 368 369 if (strncmp (curr_name, ".text", 5) == 0) 370 { 371 region = code_region; 372 base_name = concat (".text", NULL); 373 } 374 else if (strncmp (curr_name, ".data", 5) == 0) 375 { 376 region = data_region; 377 base_name = concat (".data", NULL); 378 } 379 else if (strncmp (curr_name, ".bss", 4) == 0) 380 { 381 region = data_region; 382 base_name = concat (".bss", NULL); 383 } 384 else if (strncmp (curr_name, ".rodata", 7) == 0) 385 { 386 region = data_region; 387 base_name = concat (".rodata", NULL); 388 } 389 else 390 return; 391 392 switch (region) 393 { 394 case REGION_NONE: 395 break; 396 case REGION_UPPER: 397 new_input_sec_name = concat (".upper", curr_name, NULL); 398 new_output_sec_name = concat (".upper", base_name, NULL); 399 lang_output_section_statement_type * upper 400 = lang_output_section_find (new_output_sec_name); 401 if (upper != NULL) 402 { 403 move_prefixed_section (s, new_input_sec_name, upper); 404 } 405 else 406 einfo (_("%P: error: no section named %s in linker script\n"), 407 new_output_sec_name); 408 break; 409 case REGION_LOWER: 410 new_input_sec_name = concat (".lower", curr_name, NULL); 411 new_output_sec_name = concat (".lower", base_name, NULL); 412 lang_output_section_statement_type * lower 413 = lang_output_section_find (new_output_sec_name); 414 if (lower != NULL) 415 { 416 move_prefixed_section (s, new_input_sec_name, lower); 417 } 418 else 419 einfo (_("%P: error: no section named %s in linker script\n"), 420 new_output_sec_name); 421 break; 422 case REGION_EITHER: 423 s->name = concat (".either", curr_name, NULL); 424 break; 425 default: 426 /* Unreachable. */ 427 FAIL (); 428 break; 429 } 430 free (base_name); 431 if (new_input_sec_name) 432 { 433 free (new_input_sec_name); 434 free (new_output_sec_name); 435 } 436} 437 438static void 439msp430_elf_after_open (void) 440{ 441 bfd *abfd; 442 443 gld${EMULATION_NAME}_after_open (); 444 445 /* If neither --code-region or --data-region have been passed, do not 446 transform sections names. */ 447 if ((code_region == REGION_NONE && data_region == REGION_NONE) 448 || disable_sec_transformation) 449 return; 450 451 for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link.next) 452 bfd_map_over_sections (abfd, add_region_prefix, NULL); 453} 454 455#define OPTION_CODE_REGION 321 456#define OPTION_DATA_REGION (OPTION_CODE_REGION + 1) 457#define OPTION_DISABLE_TRANS (OPTION_CODE_REGION + 2) 458 459static void 460gld${EMULATION_NAME}_add_options 461 (int ns, char **shortopts, int nl, struct option **longopts, 462 int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED) 463{ 464 static const char xtra_short[] = { }; 465 466 static const struct option xtra_long[] = 467 { 468 { "code-region", required_argument, NULL, OPTION_CODE_REGION }, 469 { "data-region", required_argument, NULL, OPTION_DATA_REGION }, 470 { "disable-sec-transformation", no_argument, NULL, 471 OPTION_DISABLE_TRANS }, 472 { NULL, no_argument, NULL, 0 } 473 }; 474 475 *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short)); 476 memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short)); 477 *longopts = (struct option *) 478 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long)); 479 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long)); 480} 481 482static void 483gld${EMULATION_NAME}_list_options (FILE * file) 484{ 485 fprintf (file, _(" --code-region={either,lower,upper,none}\n\ 486 Transform .text* sections to {either,lower,upper,none}.text* sections\n")); 487 fprintf (file, _(" --data-region={either,lower,upper,none}\n\ 488 Transform .data*, .rodata* and .bss* sections to\n\ 489 {either,lower,upper,none}.{bss,data,rodata}* sections\n")); 490 fprintf (file, _(" --disable-sec-transformation\n\ 491 Disable transformation of .{text,data,bss,rodata}* sections to\n\ 492 add the {either,lower,upper,none} prefixes\n")); 493} 494 495static bfd_boolean 496gld${EMULATION_NAME}_handle_option (int optc) 497{ 498 switch (optc) 499 { 500 case OPTION_CODE_REGION: 501 if (strcmp (optarg, "upper") == 0) 502 code_region = REGION_UPPER; 503 else if (strcmp (optarg, "lower") == 0) 504 code_region = REGION_LOWER; 505 else if (strcmp (optarg, "either") == 0) 506 code_region = REGION_EITHER; 507 else if (strcmp (optarg, "none") == 0) 508 code_region = REGION_NONE; 509 else if (strlen (optarg) == 0) 510 { 511 einfo (_("%P: --code-region requires an argument: " 512 "{upper,lower,either,none}\n")); 513 return FALSE; 514 } 515 else 516 { 517 einfo (_("%P: error: unrecognized argument to --code-region= option: " 518 "\"%s\"\n"), optarg); 519 return FALSE; 520 } 521 break; 522 523 case OPTION_DATA_REGION: 524 if (strcmp (optarg, "upper") == 0) 525 data_region = REGION_UPPER; 526 else if (strcmp (optarg, "lower") == 0) 527 data_region = REGION_LOWER; 528 else if (strcmp (optarg, "either") == 0) 529 data_region = REGION_EITHER; 530 else if (strcmp (optarg, "none") == 0) 531 data_region = REGION_NONE; 532 else if (strlen (optarg) == 0) 533 { 534 einfo (_("%P: --data-region requires an argument: " 535 "{upper,lower,either,none}\n")); 536 return FALSE; 537 } 538 else 539 { 540 einfo (_("%P: error: unrecognized argument to --data-region= option: " 541 "\"%s\"\n"), optarg); 542 return FALSE; 543 } 544 break; 545 546 case OPTION_DISABLE_TRANS: 547 disable_sec_transformation = TRUE; 548 break; 549 550 default: 551 return FALSE; 552 } 553 return TRUE; 554} 555 556static void 557eval_upper_either_sections (bfd *abfd, asection *s, void *data) 558{ 559 const char * base_sec_name; 560 const char * curr_name; 561 char * either_name; 562 int curr_region; 563 564 lang_output_section_statement_type * lower; 565 lang_output_section_statement_type * upper; 566 static bfd_size_type *lower_size = 0; 567 static bfd_size_type *upper_size = 0; 568 static bfd_size_type lower_size_rom = 0; 569 static bfd_size_type lower_size_ram = 0; 570 static bfd_size_type upper_size_rom = 0; 571 static bfd_size_type upper_size_ram = 0; 572 573 if ((s->flags & SEC_ALLOC) == 0) 574 return; 575 if (bfd_link_relocatable (&link_info)) 576 return; 577 578 base_sec_name = (const char *) data; 579 curr_name = bfd_get_section_name (abfd, s); 580 581 /* Only concerned with .either input sections in the upper output section. */ 582 either_name = concat (".either", base_sec_name, NULL); 583 if (strncmp (curr_name, either_name, strlen (either_name)) != 0 584 || strncmp (s->output_section->name, ".upper", 6) != 0) 585 goto end; 586 587 lower = lang_output_section_find (concat (".lower", base_sec_name, NULL)); 588 upper = lang_output_section_find (concat (".upper", base_sec_name, NULL)); 589 590 if (upper == NULL || upper->region == NULL) 591 goto end; 592 else if (lower == NULL) 593 lower = lang_output_section_find (base_sec_name); 594 if (lower == NULL || lower->region == NULL) 595 goto end; 596 597 if (strcmp (base_sec_name, ".text") == 0 598 || strcmp (base_sec_name, ".rodata") == 0) 599 curr_region = ROM; 600 else 601 curr_region = RAM; 602 603 if (curr_region == ROM) 604 { 605 if (lower_size_rom == 0) 606 { 607 lower_size_rom = lower->region->current - lower->region->origin; 608 upper_size_rom = upper->region->current - upper->region->origin; 609 } 610 lower_size = &lower_size_rom; 611 upper_size = &upper_size_rom; 612 } 613 else if (curr_region == RAM) 614 { 615 if (lower_size_ram == 0) 616 { 617 lower_size_ram = lower->region->current - lower->region->origin; 618 upper_size_ram = upper->region->current - upper->region->origin; 619 } 620 lower_size = &lower_size_ram; 621 upper_size = &upper_size_ram; 622 } 623 624 /* Move sections in the upper region that would fit in the lower 625 region to the lower region. */ 626 if (*lower_size + s->size < lower->region->length) 627 { 628 if (change_output_section (&(upper->children.head), s, lower)) 629 { 630 *upper_size -= s->size; 631 *lower_size += s->size; 632 } 633 } 634 end: 635 free (either_name); 636} 637 638static void 639eval_lower_either_sections (bfd *abfd, asection *s, void *data) 640{ 641 const char * base_sec_name; 642 const char * curr_name; 643 char * either_name; 644 int curr_region; 645 lang_output_section_statement_type * output_sec; 646 lang_output_section_statement_type * lower; 647 lang_output_section_statement_type * upper; 648 649 static bfd_size_type *lower_size = 0; 650 static bfd_size_type lower_size_rom = 0; 651 static bfd_size_type lower_size_ram = 0; 652 653 if ((s->flags & SEC_ALLOC) == 0) 654 return; 655 if (bfd_link_relocatable (&link_info)) 656 return; 657 658 base_sec_name = (const char *) data; 659 curr_name = bfd_get_section_name (abfd, s); 660 661 /* Only concerned with .either input sections in the lower or "default" 662 output section i.e. not in the upper output section. */ 663 either_name = concat (".either", base_sec_name, NULL); 664 if (strncmp (curr_name, either_name, strlen (either_name)) != 0 665 || strncmp (s->output_section->name, ".upper", 6) == 0) 666 return; 667 668 if (strcmp (base_sec_name, ".text") == 0 669 || strcmp (base_sec_name, ".rodata") == 0) 670 curr_region = ROM; 671 else 672 curr_region = RAM; 673 674 output_sec = lang_output_section_find (s->output_section->name); 675 676 /* If the output_section doesn't exist, this has already been reported in 677 place_orphan, so don't need to warn again. */ 678 if (output_sec == NULL || output_sec->region == NULL) 679 goto end; 680 681 /* lower and output_sec might be the same, but in some cases an .either 682 section can end up in base_sec_name if it hasn't been placed by 683 place_orphan. */ 684 lower = lang_output_section_find (concat (".lower", base_sec_name, NULL)); 685 upper = lang_output_section_find (concat (".upper", base_sec_name, NULL)); 686 if (upper == NULL) 687 goto end; 688 689 if (curr_region == ROM) 690 { 691 if (lower_size_rom == 0) 692 { 693 /* Get the size of other items in the lower region that aren't the 694 sections to be moved around. */ 695 lower_size_rom 696 = (output_sec->region->current - output_sec->region->origin) 697 - scan_children (output_sec->children.head); 698 if (output_sec != lower && lower != NULL) 699 lower_size_rom -= scan_children (lower->children.head); 700 } 701 lower_size = &lower_size_rom; 702 } 703 else if (curr_region == RAM) 704 { 705 if (lower_size_ram == 0) 706 { 707 lower_size_ram 708 = (output_sec->region->current - output_sec->region->origin) 709 - scan_children (output_sec->children.head); 710 if (output_sec != lower && lower != NULL) 711 lower_size_ram -= scan_children (lower->children.head); 712 } 713 lower_size = &lower_size_ram; 714 } 715 /* Move sections that cause the lower region to overflow to the upper region. */ 716 if (*lower_size + s->size > output_sec->region->length) 717 change_output_section (&(output_sec->children.head), s, upper); 718 else 719 *lower_size += s->size; 720 end: 721 free (either_name); 722} 723 724/* This function is similar to lang_relax_sections, but without the size 725 evaluation code that is always executed after relaxation. */ 726static void 727intermediate_relax_sections (void) 728{ 729 int i = link_info.relax_pass; 730 731 /* The backend can use it to determine the current pass. */ 732 link_info.relax_pass = 0; 733 734 while (i--) 735 { 736 bfd_boolean relax_again; 737 738 link_info.relax_trip = -1; 739 do 740 { 741 link_info.relax_trip++; 742 743 lang_do_assignments (lang_assigning_phase_enum); 744 745 lang_reset_memory_regions (); 746 747 relax_again = FALSE; 748 lang_size_sections (&relax_again, FALSE); 749 } 750 while (relax_again); 751 752 link_info.relax_pass++; 753 } 754} 755 756static void 757msp430_elf_after_allocation (void) 758{ 759 int relax_count = 0; 760 unsigned int i; 761 /* Go over each section twice, once to place either sections that don't fit 762 in lower into upper, and then again to move any sections in upper that 763 fit in lower into lower. */ 764 for (i = 0; i < 8; i++) 765 { 766 int placement_stage = (i < 4) ? LOWER_TO_UPPER : UPPER_TO_LOWER; 767 const char * base_sec_name; 768 lang_output_section_statement_type * upper; 769 770 switch (i % 4) 771 { 772 default: 773 case 0: 774 base_sec_name = ".text"; 775 break; 776 case 1: 777 base_sec_name = ".data"; 778 break; 779 case 2: 780 base_sec_name = ".bss"; 781 break; 782 case 3: 783 base_sec_name = ".rodata"; 784 break; 785 } 786 upper = lang_output_section_find (concat (".upper", base_sec_name, NULL)); 787 if (upper != NULL) 788 { 789 /* Can't just use one iteration over the all the sections to make 790 both lower->upper and upper->lower transformations because the 791 iterator encounters upper sections before all lower sections have 792 been examined. */ 793 bfd *abfd; 794 795 if (placement_stage == LOWER_TO_UPPER) 796 { 797 /* Perform relaxation and get the final size of sections 798 before trying to fit .either sections in the correct 799 ouput sections. */ 800 if (relax_count == 0) 801 { 802 intermediate_relax_sections (); 803 relax_count++; 804 } 805 for (abfd = link_info.input_bfds; abfd != NULL; 806 abfd = abfd->link.next) 807 { 808 bfd_map_over_sections (abfd, eval_lower_either_sections, 809 (void *) base_sec_name); 810 } 811 } 812 else if (placement_stage == UPPER_TO_LOWER) 813 { 814 /* Relax again before moving upper->lower. */ 815 if (relax_count == 1) 816 { 817 intermediate_relax_sections (); 818 relax_count++; 819 } 820 for (abfd = link_info.input_bfds; abfd != NULL; 821 abfd = abfd->link.next) 822 { 823 bfd_map_over_sections (abfd, eval_upper_either_sections, 824 (void *) base_sec_name); 825 } 826 } 827 828 } 829 } 830 gld${EMULATION_NAME}_after_allocation (); 831} 832 833struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = 834{ 835 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse}, 836 ${LDEMUL_SYSLIB-syslib_default}, 837 ${LDEMUL_HLL-hll_default}, 838 ${LDEMUL_AFTER_PARSE-after_parse_default}, 839 msp430_elf_after_open, 840 after_check_relocs_default, 841 msp430_elf_after_allocation, 842 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default}, 843 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target}, 844 ${LDEMUL_BEFORE_ALLOCATION-before_allocation_default}, 845 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script}, 846 "${EMULATION_NAME}", 847 "${OUTPUT_FORMAT}", 848 ${LDEMUL_FINISH-finish_default}, 849 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL}, 850 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-NULL}, 851 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan}, 852 ${LDEMUL_SET_SYMBOLS-NULL}, 853 ${LDEMUL_PARSE_ARGS-NULL}, 854 gld${EMULATION_NAME}_add_options, 855 gld${EMULATION_NAME}_handle_option, 856 ${LDEMUL_UNRECOGNIZED_FILE-NULL}, 857 gld${EMULATION_NAME}_list_options, 858 ${LDEMUL_RECOGNIZED_FILE-NULL}, 859 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL}, 860 ${LDEMUL_NEW_VERS_PATTERN-NULL}, 861 ${LDEMUL_EXTRA_MAP_FILE_TEXT-NULL} 862}; 863EOF 864# 865# Local Variables: 866# mode: c 867# End: 868