1# This shell script emits a C file. -*- C -*- 2# It does some substitutions. 3if [ -z "$MACHINE" ]; then 4 OUTPUT_ARCH=${ARCH} 5else 6 OUTPUT_ARCH=${ARCH}:${MACHINE} 7fi 8fragment <<EOF 9/* This file is part of GLD, the Gnu Linker. 10 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 11 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. 12 13 This file is part of the GNU Binutils. 14 15 This program is free software; you can redistribute it and/or modify 16 it under the terms of the GNU General Public License as published by 17 the Free Software Foundation; either version 3 of the License, or 18 (at your option) any later version. 19 20 This program is distributed in the hope that it will be useful, 21 but WITHOUT ANY WARRANTY; without even the implied warranty of 22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 GNU General Public License for more details. 24 25 You should have received a copy of the GNU General Public License 26 along with this program; if not, write to the Free Software 27 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 28 MA 02110-1301, USA. */ 29 30 31/* For WINDOWS_NT */ 32/* The original file generated returned different default scripts depending 33 on whether certain switches were set, but these switches pertain to the 34 Linux system and that particular version of coff. In the NT case, we 35 only determine if the subsystem is console or windows in order to select 36 the correct entry point by default. */ 37 38#include "sysdep.h" 39#include "bfd.h" 40#include "bfdlink.h" 41#include "getopt.h" 42#include "libiberty.h" 43#include "filenames.h" 44#include "ld.h" 45#include "ldmain.h" 46#include "ldexp.h" 47#include "ldlang.h" 48#include "ldfile.h" 49#include "ldemul.h" 50#include <ldgram.h> 51#include "ldlex.h" 52#include "ldmisc.h" 53#include "ldctor.h" 54#include "coff/internal.h" 55#include "../bfd/libcoff.h" 56 57#define TARGET_IS_${EMULATION_NAME} 58 59static struct internal_extra_pe_aouthdr pe; 60static int dll; 61 62extern const char *output_filename; 63 64static void 65gld_${EMULATION_NAME}_before_parse (void) 66{ 67 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); 68 output_filename = "a.exe"; 69} 70 71/* PE format extra command line options. */ 72 73/* Used for setting flags in the PE header. */ 74#define OPTION_BASE_FILE (300 + 1) 75#define OPTION_DLL (OPTION_BASE_FILE + 1) 76#define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1) 77#define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1) 78#define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1) 79#define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1) 80#define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1) 81#define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1) 82#define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1) 83#define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1) 84#define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1) 85#define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1) 86#define OPTION_SUBSYSTEM (OPTION_STACK + 1) 87#define OPTION_HEAP (OPTION_SUBSYSTEM + 1) 88 89static void 90gld${EMULATION_NAME}_add_options 91 (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl, 92 struct option **longopts, int nrl ATTRIBUTE_UNUSED, 93 struct option **really_longopts ATTRIBUTE_UNUSED) 94{ 95 static const struct option xtra_long[] = { 96 /* PE options */ 97 {"base-file", required_argument, NULL, OPTION_BASE_FILE}, 98 {"dll", no_argument, NULL, OPTION_DLL}, 99 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT}, 100 {"heap", required_argument, NULL, OPTION_HEAP}, 101 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE}, 102 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION}, 103 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION}, 104 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION}, 105 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION}, 106 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION}, 107 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION}, 108 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT}, 109 {"stack", required_argument, NULL, OPTION_STACK}, 110 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, 111 {NULL, no_argument, NULL, 0} 112 }; 113 114 *longopts = (struct option *) 115 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long)); 116 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long)); 117} 118 119 120/* PE/WIN32; added routines to get the subsystem type, heap and/or stack 121 parameters which may be input from the command line */ 122 123typedef struct { 124 void *ptr; 125 int size; 126 int value; 127 char *symbol; 128 int inited; 129} definfo; 130 131#define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0} 132 133static definfo init[] = 134{ 135 /* imagebase must be first */ 136#define IMAGEBASEOFF 0 137 D(ImageBase,"__image_base__", BEOS_EXE_IMAGE_BASE), 138#define DLLOFF 1 139 {&dll, sizeof(dll), 0, "__dll__", 0}, 140 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT), 141 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT), 142 D(MajorOperatingSystemVersion,"__major_os_version__", 4), 143 D(MinorOperatingSystemVersion,"__minor_os_version__", 0), 144 D(MajorImageVersion,"__major_image_version__", 1), 145 D(MinorImageVersion,"__minor_image_version__", 0), 146 D(MajorSubsystemVersion,"__major_subsystem_version__", 4), 147 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0), 148 D(Subsystem,"__subsystem__", 3), 149 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x2000000), 150 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000), 151 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000), 152 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000), 153 D(LoaderFlags,"__loader_flags__", 0x0), 154 { NULL, 0, 0, NULL, 0 } 155}; 156 157 158static void 159set_pe_name (char *name, long val) 160{ 161 int i; 162 /* Find the name and set it. */ 163 for (i = 0; init[i].ptr; i++) 164 { 165 if (strcmp (name, init[i].symbol) == 0) 166 { 167 init[i].value = val; 168 init[i].inited = 1; 169 return; 170 } 171 } 172 abort(); 173} 174 175 176static void 177set_pe_subsystem (void) 178{ 179 const char *sver; 180 int len; 181 int i; 182 static const struct 183 { 184 const char *name; 185 const int value; 186 const char *entry; 187 } 188 v[] = 189 { 190 { "native", 1, "_NtProcessStartup" }, 191 { "windows", 2, "_WinMainCRTStartup" }, 192 { "wwindows", 2, "_wWinMainCRTStartup" }, 193 { "console", 3, "_mainCRTStartup" }, 194 { "wconsole", 3, "_wmainCRTStartup" }, 195 { "posix", 7, "___PosixProcessStartup"}, 196 { 0, 0, 0 } 197 }; 198 199 sver = strchr (optarg, ':'); 200 if (sver == NULL) 201 len = strlen (optarg); 202 else 203 { 204 char *end; 205 206 len = sver - optarg; 207 set_pe_name ("__major_subsystem_version__", 208 strtoul (sver + 1, &end, 0)); 209 if (*end == '.') 210 set_pe_name ("__minor_subsystem_version__", 211 strtoul (end + 1, &end, 0)); 212 if (*end != '\0') 213 einfo ("%P: warning: bad version number in -subsystem option\n"); 214 } 215 216 for (i = 0; v[i].name; i++) 217 { 218 if (strncmp (optarg, v[i].name, len) == 0 219 && v[i].name[len] == '\0') 220 { 221 set_pe_name ("__subsystem__", v[i].value); 222 223 /* If the subsystem is windows, we use a different entry 224 point. */ 225 lang_default_entry (v[i].entry); 226 227 return; 228 } 229 } 230 einfo ("%P%F: invalid subsystem type %s\n", optarg); 231} 232 233 234static void 235set_pe_value (char *name) 236{ 237 char *end; 238 set_pe_name (name, strtoul (optarg, &end, 0)); 239 if (end == optarg) 240 { 241 einfo ("%P%F: invalid hex number for PE parameter '%s'\n", optarg); 242 } 243 244 optarg = end; 245} 246 247static void 248set_pe_stack_heap (char *resname, char *comname) 249{ 250 set_pe_value (resname); 251 if (*optarg == ',') 252 { 253 optarg++; 254 set_pe_value (comname); 255 } 256 else if (*optarg) 257 { 258 einfo ("%P%F: strange hex info for PE parameter '%s'\n", optarg); 259 } 260} 261 262 263static bfd_boolean 264gld${EMULATION_NAME}_handle_option (int optc) 265{ 266 switch (optc) 267 { 268 default: 269 return FALSE; 270 271 case OPTION_BASE_FILE: 272 link_info.base_file = fopen (optarg, FOPEN_WB); 273 if (link_info.base_file == NULL) 274 einfo (_("%F%P: cannot open base file %s\n"), optarg); 275 break; 276 277 /* PE options */ 278 case OPTION_HEAP: 279 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__"); 280 break; 281 case OPTION_STACK: 282 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__"); 283 break; 284 case OPTION_SUBSYSTEM: 285 set_pe_subsystem (); 286 break; 287 case OPTION_MAJOR_OS_VERSION: 288 set_pe_value ("__major_os_version__"); 289 break; 290 case OPTION_MINOR_OS_VERSION: 291 set_pe_value ("__minor_os_version__"); 292 break; 293 case OPTION_MAJOR_SUBSYSTEM_VERSION: 294 set_pe_value ("__major_subsystem_version__"); 295 break; 296 case OPTION_MINOR_SUBSYSTEM_VERSION: 297 set_pe_value ("__minor_subsystem_version__"); 298 break; 299 case OPTION_MAJOR_IMAGE_VERSION: 300 set_pe_value ("__major_image_version__"); 301 break; 302 case OPTION_MINOR_IMAGE_VERSION: 303 set_pe_value ("__minor_image_version__"); 304 break; 305 case OPTION_FILE_ALIGNMENT: 306 set_pe_value ("__file_alignment__"); 307 break; 308 case OPTION_SECTION_ALIGNMENT: 309 set_pe_value ("__section_alignment__"); 310 break; 311 case OPTION_DLL: 312 set_pe_name ("__dll__", 1); 313 break; 314 case OPTION_IMAGE_BASE: 315 set_pe_value ("__image_base__"); 316 break; 317 } 318 return TRUE; 319} 320 321/* Assign values to the special symbols before the linker script is 322 read. */ 323 324static void 325gld_${EMULATION_NAME}_set_symbols (void) 326{ 327 /* Run through and invent symbols for all the 328 names and insert the defaults. */ 329 int j; 330 331 if (!init[IMAGEBASEOFF].inited) 332 { 333 if (link_info.relocatable) 334 init[IMAGEBASEOFF].value = 0; 335 else if (init[DLLOFF].value) 336 init[IMAGEBASEOFF].value = BEOS_DLL_IMAGE_BASE; 337 else 338 init[IMAGEBASEOFF].value = BEOS_EXE_IMAGE_BASE; 339 } 340 341 /* Don't do any symbol assignments if this is a relocatable link. */ 342 if (link_info.relocatable) 343 return; 344 345 /* Glue the assignments into the abs section */ 346 push_stat_ptr (&abs_output_section->children); 347 348 for (j = 0; init[j].ptr; j++) 349 { 350 long val = init[j].value; 351 lang_add_assignment (exp_assign (init[j].symbol, exp_intop (val), 352 FALSE)); 353 if (init[j].size == sizeof(short)) 354 *(short *)init[j].ptr = val; 355 else if (init[j].size == sizeof(int)) 356 *(int *)init[j].ptr = val; 357 else if (init[j].size == sizeof(long)) 358 *(long *)init[j].ptr = val; 359 /* This might be a long long or other special type. */ 360 else if (init[j].size == sizeof(bfd_vma)) 361 *(bfd_vma *)init[j].ptr = val; 362 else abort(); 363 } 364 /* Restore the pointer. */ 365 pop_stat_ptr (); 366 367 if (pe.FileAlignment > 368 pe.SectionAlignment) 369 { 370 einfo ("%P: warning, file alignment > section alignment.\n"); 371 } 372} 373 374static void 375gld_${EMULATION_NAME}_after_open (void) 376{ 377 after_open_default (); 378 379 /* Pass the wacky PE command line options into the output bfd. 380 FIXME: This should be done via a function, rather than by 381 including an internal BFD header. */ 382 if (!coff_data(link_info.output_bfd)->pe) 383 { 384 einfo ("%F%P: PE operations on non PE file.\n"); 385 } 386 387 pe_data(link_info.output_bfd)->pe_opthdr = pe; 388 pe_data(link_info.output_bfd)->dll = init[DLLOFF].value; 389 390} 391 392/* Callback functions for qsort in sort_sections. */ 393 394static int 395sort_by_file_name (const void *a, const void *b) 396{ 397 const lang_statement_union_type *const *ra = a; 398 const lang_statement_union_type *const *rb = b; 399 int i, a_sec, b_sec; 400 401 i = filename_cmp ((*ra)->input_section.section->owner->my_archive->filename, 402 (*rb)->input_section.section->owner->my_archive->filename); 403 if (i != 0) 404 return i; 405 406 i = filename_cmp ((*ra)->input_section.section->owner->filename, 407 (*rb)->input_section.section->owner->filename); 408 if (i != 0) 409 return i; 410 /* the tail idata4/5 are the only ones without relocs to an 411 idata$6 section unless we are importing by ordinal, 412 so sort them to last to terminate the IAT 413 and HNT properly. if no reloc this one is import by ordinal 414 so we have to sort by section contents */ 415 416 if ( ((*ra)->input_section.section->reloc_count + (*rb)->input_section.section->reloc_count) ) 417 { 418 i = (((*ra)->input_section.section->reloc_count > 419 (*rb)->input_section.section->reloc_count) ? -1 : 0); 420 if ( i != 0) 421 return i; 422 423 return (((*ra)->input_section.section->reloc_count > 424 (*rb)->input_section.section->reloc_count) ? 0 : 1); 425 } 426 else 427 { 428 if ( (strcmp( (*ra)->input_section.section->name, ".idata$6") == 0) ) 429 return 0; /* don't sort .idata$6 or .idata$7 FIXME dlltool eliminate .idata$7 */ 430 431 if (! bfd_get_section_contents ((*ra)->input_section.section->owner, 432 (*ra)->input_section.section, &a_sec, (file_ptr) 0, (bfd_size_type)sizeof(a_sec))) 433 einfo ("%F%B: Can't read contents of section .idata: %E\n", 434 (*ra)->input_section.section->owner); 435 436 if (! bfd_get_section_contents ((*rb)->input_section.section->owner, 437 (*rb)->input_section.section, &b_sec, (file_ptr) 0, (bfd_size_type)sizeof(b_sec) )) 438 einfo ("%F%B: Can't read contents of section .idata: %E\n", 439 (*rb)->input_section.section->owner); 440 441 i = ((a_sec < b_sec) ? -1 : 0); 442 if ( i != 0) 443 return i; 444 return ((a_sec < b_sec) ? 0 : 1); 445 } 446return 0; 447} 448 449static int 450sort_by_section_name (const void *a, const void *b) 451{ 452 const lang_statement_union_type *const *ra = a; 453 const lang_statement_union_type *const *rb = b; 454 int i; 455 i = strcmp ((*ra)->input_section.section->name, 456 (*rb)->input_section.section->name); 457 /* This is a hack to make .stab and .stabstr last, so we don't have 458 to fix strip/objcopy for .reloc sections. 459 FIXME stripping images with a .rsrc section still needs to be fixed. */ 460 if (i != 0) 461 { 462 if ((CONST_STRNEQ ((*ra)->input_section.section->name, ".stab")) 463 && (! CONST_STRNEQ ((*rb)->input_section.section->name, ".stab"))) 464 return 1; 465 } 466 return i; 467} 468 469/* Subroutine of sort_sections to a contiguous subset of a list of sections. 470 NEXT_AFTER is the element after the last one to sort. 471 The result is a pointer to the last element's "next" pointer. */ 472 473static lang_statement_union_type ** 474sort_sections_1 (lang_statement_union_type **startptr, 475 lang_statement_union_type *next_after, 476 int count, 477 int (*sort_func) (const void *, const void *)) 478{ 479 lang_statement_union_type **vec; 480 lang_statement_union_type *p; 481 int i; 482 lang_statement_union_type **ret; 483 484 if (count == 0) 485 return startptr; 486 487 vec = ((lang_statement_union_type **) 488 xmalloc (count * sizeof (lang_statement_union_type *))); 489 490 for (p = *startptr, i = 0; i < count; i++, p = p->header.next) 491 vec[i] = p; 492 493 qsort (vec, count, sizeof (vec[0]), sort_func); 494 495 /* Fill in the next pointers again. */ 496 *startptr = vec[0]; 497 for (i = 0; i < count - 1; i++) 498 vec[i]->header.next = vec[i + 1]; 499 vec[i]->header.next = next_after; 500 ret = &vec[i]->header.next; 501 free (vec); 502 return ret; 503} 504 505/* Sort the .idata\$foo input sections of archives into filename order. 506 The reason is so dlltool can arrange to have the pe dll import information 507 generated correctly - the head of the list goes into dh.o, the tail into 508 dt.o, and the guts into ds[nnnn].o. Note that this is only needed for the 509 .idata section. 510 FIXME: This may no longer be necessary with grouped sections. Instead of 511 sorting on dh.o, ds[nnnn].o, dt.o, one could, for example, have dh.o use 512 .idata\$4h, have ds[nnnn].o use .idata\$4s[nnnn], and have dt.o use .idata\$4t. 513 This would have to be elaborated upon to handle multiple dll's 514 [assuming such an eloboration is possible of course]. 515 516 We also sort sections in '\$' wild statements. These are created by the 517 place_orphans routine to implement grouped sections. */ 518 519static void 520sort_sections (lang_statement_union_type *s) 521{ 522 for (; s ; s = s->header.next) 523 switch (s->header.type) 524 { 525 case lang_output_section_statement_enum: 526 sort_sections (s->output_section_statement.children.head); 527 break; 528 case lang_wild_statement_enum: 529 { 530 lang_statement_union_type **p = &s->wild_statement.children.head; 531 struct wildcard_list *sec; 532 533 for (sec = s->wild_statement.section_list; sec; sec = sec->next) 534 { 535 /* Is this the .idata section? */ 536 if (sec->spec.name != NULL 537 && CONST_STRNEQ (sec->spec.name, ".idata")) 538 { 539 /* Sort the children. We want to sort any objects in 540 the same archive. In order to handle the case of 541 including a single archive multiple times, we sort 542 all the children by archive name and then by object 543 name. After sorting them, we re-thread the pointer 544 chain. */ 545 546 while (*p) 547 { 548 lang_statement_union_type *start = *p; 549 if (start->header.type != lang_input_section_enum 550 || !start->input_section.section->owner->my_archive) 551 p = &(start->header.next); 552 else 553 { 554 lang_statement_union_type *end; 555 int count; 556 557 for (end = start, count = 0; 558 end && (end->header.type 559 == lang_input_section_enum); 560 end = end->header.next) 561 count++; 562 563 p = sort_sections_1 (p, end, count, 564 sort_by_file_name); 565 } 566 } 567 break; 568 } 569 570 /* If this is a collection of grouped sections, sort them. 571 The linker script must explicitly mention "*(.foo\$)" or 572 "*(.foo\$*)". Don't sort them if \$ is not the last 573 character (not sure if this is really useful, but it 574 allows explicitly mentioning some \$ sections and letting 575 the linker handle the rest). */ 576 if (sec->spec.name != NULL) 577 { 578 char *q = strchr (sec->spec.name, '\$'); 579 580 if (q != NULL 581 && (q[1] == '\0' 582 || (q[1] == '*' && q[2] == '\0'))) 583 { 584 lang_statement_union_type *end; 585 int count; 586 587 for (end = *p, count = 0; end; end = end->header.next) 588 { 589 if (end->header.type != lang_input_section_enum) 590 abort (); 591 count++; 592 } 593 (void) sort_sections_1 (p, end, count, 594 sort_by_section_name); 595 } 596 break; 597 } 598 } 599 } 600 break; 601 default: 602 break; 603 } 604} 605 606static void 607gld_${EMULATION_NAME}_before_allocation (void) 608{ 609#ifdef TARGET_IS_ppcpe 610 /* Here we rummage through the found bfds to collect toc information */ 611 { 612 LANG_FOR_EACH_INPUT_STATEMENT (is) 613 { 614 if (!ppc_process_before_allocation(is->the_bfd, &link_info)) 615 { 616 einfo("Errors encountered processing file %s\n", is->filename); 617 } 618 } 619 } 620 621 /* We have seen it all. Allocate it, and carry on */ 622 ppc_allocate_toc_section (&link_info); 623#else 624#ifdef TARGET_IS_armpe 625 /* FIXME: we should be able to set the size of the interworking stub 626 section. 627 628 Here we rummage through the found bfds to collect glue 629 information. FIXME: should this be based on a command line 630 option? krk@cygnus.com */ 631 { 632 LANG_FOR_EACH_INPUT_STATEMENT (is) 633 { 634 if (!arm_process_before_allocation (is->the_bfd, & link_info)) 635 { 636 einfo ("Errors encountered processing file %s", is->filename); 637 } 638 } 639 } 640 641 /* We have seen it all. Allocate it, and carry on */ 642 arm_allocate_interworking_sections (& link_info); 643#endif /* TARGET_IS_armpe */ 644#endif /* TARGET_IS_ppcpe */ 645 646 sort_sections (stat_ptr->head); 647 648 before_allocation_default (); 649} 650 651/* Place an orphan section. We use this to put sections with a '\$' in them 652 into the right place. Any section with a '\$' in them (e.g. .text\$foo) 653 gets mapped to the output section with everything from the '\$' on stripped 654 (e.g. .text). 655 See the Microsoft Portable Executable and Common Object File Format 656 Specification 4.1, section 4.2, Grouped Sections. 657 658 FIXME: This is now handled by the linker script using wildcards, 659 but I'm leaving this here in case we want to enable it for sections 660 which are not mentioned in the linker script. */ 661 662static lang_output_section_statement_type * 663gld${EMULATION_NAME}_place_orphan (asection *s, 664 const char *secname, 665 int constraint) 666{ 667 char *output_secname, *ps; 668 lang_output_section_statement_type *os; 669 lang_statement_union_type *l; 670 671 if ((s->flags & SEC_ALLOC) == 0) 672 return NULL; 673 674 /* Don't process grouped sections unless doing a final link. 675 If they're marked as COMDAT sections, we don't want .text\$foo to 676 end up in .text and then have .text disappear because it's marked 677 link-once-discard. */ 678 if (link_info.relocatable) 679 return NULL; 680 681 /* Everything from the '\$' on gets deleted so don't allow '\$' as the 682 first character. */ 683 if (*secname == '\$') 684 einfo ("%P%F: section %s has '\$' as first character\n", secname); 685 if (strchr (secname + 1, '\$') == NULL) 686 return NULL; 687 688 /* Look up the output section. The Microsoft specs say sections names in 689 image files never contain a '\$'. Fortunately, lang_..._lookup creates 690 the section if it doesn't exist. */ 691 output_secname = xstrdup (secname); 692 ps = strchr (output_secname + 1, '\$'); 693 *ps = 0; 694 os = lang_output_section_statement_lookup (output_secname, constraint, TRUE); 695 696 /* Find the '\$' wild statement for this section. We currently require the 697 linker script to explicitly mention "*(.foo\$)". 698 FIXME: ppcpe.sc has .CRT\$foo in the .rdata section. According to the 699 Microsoft docs this isn't correct so it's not (currently) handled. */ 700 701 ps[0] = '\$'; 702 ps[1] = 0; 703 for (l = os->children.head; l; l = l->header.next) 704 if (l->header.type == lang_wild_statement_enum) 705 { 706 struct wildcard_list *sec; 707 708 for (sec = l->wild_statement.section_list; sec; sec = sec->next) 709 if (sec->spec.name && strcmp (sec->spec.name, output_secname) == 0) 710 break; 711 if (sec) 712 break; 713 } 714 ps[0] = 0; 715 if (l == NULL) 716 einfo ("%P%F: *(%s\$) missing from linker script\n", output_secname); 717 718 /* Link the input section in and we're done for now. 719 The sections still have to be sorted, but that has to wait until 720 all such sections have been processed by us. The sorting is done by 721 sort_sections. */ 722 lang_add_section (&l->wild_statement.children, s, NULL, os); 723 724 return os; 725} 726 727static char * 728gld_${EMULATION_NAME}_get_script (int *isfile) 729EOF 730# Scripts compiled in. 731# sed commands to quote an ld script as a C string. 732sc="-f stringify.sed" 733 734fragment <<EOF 735{ 736 *isfile = 0; 737 738 if (link_info.relocatable && config.build_constructors) 739 return 740EOF 741sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c 742echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c 743sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c 744echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c 745sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c 746echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c 747sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c 748echo ' ; else return' >> e${EMULATION_NAME}.c 749sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c 750echo '; }' >> e${EMULATION_NAME}.c 751 752fragment <<EOF 753 754 755struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = 756{ 757 gld_${EMULATION_NAME}_before_parse, 758 syslib_default, 759 hll_default, 760 after_parse_default, 761 gld_${EMULATION_NAME}_after_open, 762 after_allocation_default, 763 set_output_arch_default, 764 ldemul_default_target, 765 gld_${EMULATION_NAME}_before_allocation, 766 gld_${EMULATION_NAME}_get_script, 767 "${EMULATION_NAME}", 768 "${OUTPUT_FORMAT}", 769 finish_default, 770 NULL, /* create output section statements */ 771 NULL, /* open dynamic archive */ 772 gld${EMULATION_NAME}_place_orphan, 773 gld_${EMULATION_NAME}_set_symbols, 774 NULL, /* parse_args */ 775 gld${EMULATION_NAME}_add_options, 776 gld${EMULATION_NAME}_handle_option, 777 NULL, /* unrecognized file */ 778 NULL, /* list options */ 779 NULL, /* recognized file */ 780 NULL, /* find_potential_libraries */ 781 NULL /* new_vers_pattern */ 782}; 783EOF 784