1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 rm -f e${EMULATION_NAME}.c
4 (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
5 cat >>e${EMULATION_NAME}.c <<EOF
6 /* This file is part of GLD, the Gnu Linker.
7 Copyright 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 /* The original file generated returned different default scripts depending
25 on whether certain switches were set, but these switches pertain to the
26 Linux system and that particular version of coff. In the NT case, we
27 only determine if the subsystem is console or windows in order to select
28 the correct entry point by default. */
34 #include "libiberty.h"
45 #include "coff/internal.h"
47 /* FIXME: This is a BFD internal header file, and we should not be
49 #include "../bfd/libcoff.h"
54 #define TARGET_IS_${EMULATION_NAME}
56 /* Permit the emulation parameters to override the default section
57 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
58 it seem that include/coff/internal.h should not define
59 PE_DEF_SECTION_ALIGNMENT. */
60 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
61 #undef PE_DEF_SECTION_ALIGNMENT
62 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
65 #if defined(TARGET_IS_i386pe)
69 #define PE_DEF_SUBSYSTEM 3
71 #ifdef TARGET_IS_arm_epoc_pe
72 #define bfd_arm_pe_allocate_interworking_sections \
73 bfd_arm_epoc_pe_allocate_interworking_sections
74 #define bfd_arm_pe_get_bfd_for_interworking \
75 bfd_arm_epoc_pe_get_bfd_for_interworking
76 #define bfd_arm_pe_process_before_allocation \
77 bfd_arm_epoc_pe_process_before_allocation
80 static void gld_${EMULATION_NAME}_set_symbols PARAMS ((void));
81 static void gld_${EMULATION_NAME}_after_open PARAMS ((void));
82 static void gld_${EMULATION_NAME}_before_parse PARAMS ((void));
83 static void gld_${EMULATION_NAME}_after_parse PARAMS ((void));
84 static void gld_${EMULATION_NAME}_before_allocation PARAMS ((void));
85 static boolean gld_${EMULATION_NAME}_place_orphan
86 PARAMS ((lang_input_statement_type *, asection *));
87 static void gld${EMULATION_NAME}_place_section
88 PARAMS ((lang_statement_union_type *));
89 static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *));
90 static int gld_${EMULATION_NAME}_parse_args PARAMS ((int, char **));
91 static void gld_${EMULATION_NAME}_finish PARAMS ((void));
93 static struct internal_extra_pe_aouthdr pe;
95 static int support_old_code = 0;
96 static char * thumb_entry_symbol = NULL;
97 static lang_assignment_statement_type *image_base_statement = 0;
99 static char *pe_out_def_filename = 0;
100 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable */
101 static char *pe_implib_filename = 0;
103 extern const char *output_filename;
106 gld_${EMULATION_NAME}_before_parse()
108 output_filename = "${EXECUTABLE_NAME:-a.exe}";
109 ldfile_output_architecture = bfd_arch_${ARCH};
111 config.has_shared = 1;
115 /* PE format extra command line options. */
117 /* Used for setting flags in the PE header. */
118 #define OPTION_BASE_FILE (300 + 1)
119 #define OPTION_DLL (OPTION_BASE_FILE + 1)
120 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
121 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
122 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
123 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
124 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
125 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
126 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
127 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
128 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
129 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
130 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
131 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
132 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
133 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
134 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
135 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
136 #define OPTION_KILL_ATS (OPTION_EXCLUDE_SYMBOLS + 1)
137 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
138 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
139 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
140 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
141 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
142 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
143 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
145 static struct option longopts[] =
148 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
149 {"dll", no_argument, NULL, OPTION_DLL},
150 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
151 {"heap", required_argument, NULL, OPTION_HEAP},
152 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
153 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
154 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
155 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
156 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
157 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
158 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
159 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
160 {"stack", required_argument, NULL, OPTION_STACK},
161 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
162 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
163 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
165 /* getopt allows abbreviations, so we do this to stop it from treating -o
166 as an abbreviation for this option */
167 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
168 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
169 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
170 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
171 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
172 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
173 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
174 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
175 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
176 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
177 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
179 {NULL, no_argument, NULL, 0}
183 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
184 parameters which may be input from the command line */
195 #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
197 static definfo init[] =
199 /* imagebase must be first */
200 #define IMAGEBASEOFF 0
201 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
203 {&dll, sizeof(dll), 0, "__dll__", 0},
204 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
205 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
206 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
207 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
208 D(MajorImageVersion,"__major_image_version__", 1),
209 D(MinorImageVersion,"__minor_image_version__", 0),
210 D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
211 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
212 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
213 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x2000000),
214 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
215 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
216 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
217 D(LoaderFlags,"__loader_flags__", 0x0),
218 { NULL, 0, 0, NULL, 0 }
222 gld_${EMULATION_NAME}_list_options (file)
225 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
226 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
227 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
228 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
229 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
230 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
231 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
232 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
233 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
234 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
235 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
236 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
237 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
238 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
239 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
240 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
242 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
243 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
244 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
245 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
246 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
247 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
248 fprintf (file, _(" --out-implib <file> Generate import library\n"));
249 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
254 set_pe_name (name, val)
259 /* Find the name and set it. */
260 for (i = 0; init[i].ptr; i++)
262 if (strcmp (name, init[i].symbol) == 0)
287 { "native", 1, "NtProcessStartup" },
288 { "windows", 2, "WinMainCRTStartup" },
289 { "console", 3, "mainCRTStartup" },
291 /* The Microsoft linker does not recognize this. */
294 { "posix", 7, "__PosixProcessStartup"},
298 sver = strchr (optarg, ':');
300 len = strlen (optarg);
306 set_pe_name ("__major_subsystem_version__",
307 strtoul (sver + 1, &end, 0));
309 set_pe_name ("__minor_subsystem_version__",
310 strtoul (end + 1, &end, 0));
312 einfo (_("%P: warning: bad version number in -subsystem option\n"));
315 for (i = 0; v[i].name; i++)
317 if (strncmp (optarg, v[i].name, len) == 0
318 && v[i].name[len] == '\0')
320 const char *initial_symbol_char;
323 set_pe_name ("__subsystem__", v[i].value);
325 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
326 if (*initial_symbol_char == '\0')
332 /* lang_add_entry expects its argument to be permanently
333 allocated, so we don't free this string. */
334 alc_entry = xmalloc (strlen (initial_symbol_char)
335 + strlen (v[i].entry)
337 strcpy (alc_entry, initial_symbol_char);
338 strcat (alc_entry, v[i].entry);
342 lang_add_entry (entry, 1);
348 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
360 set_pe_name (name, strtoul (optarg, &end, 0));
363 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
369 set_pe_stack_heap (resname, comname)
373 set_pe_value (resname);
378 set_pe_value (comname);
381 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
387 gld_${EMULATION_NAME}_parse_args(argc, argv)
393 int prevoptind = optind;
394 int prevopterr = opterr;
396 static int lastoptind = -1;
398 if (lastoptind != optind)
404 optc = getopt_long_only (argc, argv, "-", longopts, &longind);
415 case OPTION_BASE_FILE:
416 link_info.base_file = (PTR) fopen (optarg, FOPEN_WB);
417 if (link_info.base_file == NULL)
419 /* xgettext:c-format */
420 fprintf (stderr, _("%s: Can't open base file %s\n"),
421 program_name, optarg);
428 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
431 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
433 case OPTION_SUBSYSTEM:
436 case OPTION_MAJOR_OS_VERSION:
437 set_pe_value ("__major_os_version__");
439 case OPTION_MINOR_OS_VERSION:
440 set_pe_value ("__minor_os_version__");
442 case OPTION_MAJOR_SUBSYSTEM_VERSION:
443 set_pe_value ("__major_subsystem_version__");
445 case OPTION_MINOR_SUBSYSTEM_VERSION:
446 set_pe_value ("__minor_subsystem_version__");
448 case OPTION_MAJOR_IMAGE_VERSION:
449 set_pe_value ("__major_image_version__");
451 case OPTION_MINOR_IMAGE_VERSION:
452 set_pe_value ("__minor_image_version__");
454 case OPTION_FILE_ALIGNMENT:
455 set_pe_value ("__file_alignment__");
457 case OPTION_SECTION_ALIGNMENT:
458 set_pe_value ("__section_alignment__");
461 set_pe_name ("__dll__", 1);
463 case OPTION_IMAGE_BASE:
464 set_pe_value ("__image_base__");
466 case OPTION_SUPPORT_OLD_CODE:
467 support_old_code = 1;
469 case OPTION_THUMB_ENTRY:
470 thumb_entry_symbol = optarg;
474 pe_out_def_filename = xstrdup (optarg);
476 case OPTION_EXPORT_ALL:
477 pe_dll_export_everything = 1;
479 case OPTION_EXCLUDE_SYMBOLS:
480 pe_dll_add_excludes (optarg);
482 case OPTION_KILL_ATS:
485 case OPTION_STDCALL_ALIASES:
486 pe_dll_stdcall_aliases = 1;
488 case OPTION_ENABLE_STDCALL_FIXUP:
489 pe_enable_stdcall_fixup = 1;
491 case OPTION_DISABLE_STDCALL_FIXUP:
492 pe_enable_stdcall_fixup = 0;
494 case OPTION_IMPLIB_FILENAME:
495 pe_implib_filename = xstrdup (optarg);
497 case OPTION_WARN_DUPLICATE_EXPORTS:
498 pe_dll_warn_dup_exports = 1;
500 case OPTION_IMP_COMPAT:
501 pe_dll_compat_implib = 1;
508 /* Assign values to the special symbols before the linker script is
512 gld_${EMULATION_NAME}_set_symbols ()
514 /* Run through and invent symbols for all the
515 names and insert the defaults. */
517 lang_statement_list_type *save;
519 if (!init[IMAGEBASEOFF].inited)
521 if (link_info.relocateable)
522 init[IMAGEBASEOFF].value = 0;
523 else if (init[DLLOFF].value || link_info.shared)
524 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
526 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
529 /* Don't do any symbol assignments if this is a relocateable link. */
530 if (link_info.relocateable)
533 /* Glue the assignments into the abs section */
536 stat_ptr = &(abs_output_section->children);
538 for (j = 0; init[j].ptr; j++)
540 long val = init[j].value;
541 lang_assignment_statement_type *rv;
542 rv = lang_add_assignment (exp_assop ('=' ,init[j].symbol, exp_intop (val)));
543 if (init[j].size == sizeof(short))
544 *(short *)init[j].ptr = val;
545 else if (init[j].size == sizeof(int))
546 *(int *)init[j].ptr = val;
547 else if (init[j].size == sizeof(long))
548 *(long *)init[j].ptr = val;
549 /* This might be a long long or other special type. */
550 else if (init[j].size == sizeof(bfd_vma))
551 *(bfd_vma *)init[j].ptr = val;
553 if (j == IMAGEBASEOFF)
554 image_base_statement = rv;
556 /* Restore the pointer. */
559 if (pe.FileAlignment >
562 einfo (_("%P: warning, file alignment > section alignment.\n"));
566 /* This is called after the linker script and the command line options
570 gld_${EMULATION_NAME}_after_parse ()
572 /* The Windows libraries are designed for the linker to treat the
573 entry point as an undefined symbol. Otherwise, the .obj that
574 defines mainCRTStartup is brought in because it is the first
575 encountered in libc.lib and it has other symbols in it which will
576 be pulled in by the link process. To avoid this, we act as
577 though the user specified -u with the entry point symbol.
579 This function is called after the linker script and command line
580 options have been read, so at this point we know the right entry
581 point. This function is called before the input files are
582 opened, so registering the symbol as undefined will make a
585 if (! link_info.relocateable && entry_symbol != NULL)
586 ldlang_add_undef (entry_symbol);
589 static struct bfd_link_hash_entry *pe_undef_found_sym;
592 pe_undef_cdecl_match (h, string)
593 struct bfd_link_hash_entry *h;
596 int sl = strlen (string);
597 if (h->type == bfd_link_hash_defined
598 && strncmp (h->root.string, string, sl) == 0
599 && h->root.string[sl] == '@')
601 pe_undef_found_sym = h;
610 static int gave_warning_message = 0;
611 struct bfd_link_hash_entry *undef, *sym;
613 for (undef = link_info.hash->undefs; undef; undef=undef->next)
614 if (undef->type == bfd_link_hash_undefined)
616 at = strchr (undef->root.string, '@');
619 /* The symbol is a stdcall symbol, so let's look for a cdecl
620 symbol with the same name and resolve to that */
621 char *cname = xstrdup (undef->root.string);
622 at = strchr (cname, '@');
624 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
625 if (sym && sym->type == bfd_link_hash_defined)
627 undef->type = bfd_link_hash_defined;
628 undef->u.def.value = sym->u.def.value;
629 undef->u.def.section = sym->u.def.section;
630 if (pe_enable_stdcall_fixup == -1)
632 einfo (_("Warning: resolving %s by linking to %s\n"),
633 undef->root.string, cname);
634 if (! gave_warning_message)
636 gave_warning_message = 1;
637 einfo(_("Use --enable-stdcall-fixup to disable these warnings\n"));
638 einfo(_("Use --disable-stdcall-fixup to disable these fixups\n"));
645 /* The symbol is a cdecl symbol, so we look for stdcall
646 symbols - which means scanning the whole symbol table */
647 pe_undef_found_sym = 0;
648 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
649 (PTR) undef->root.string);
650 sym = pe_undef_found_sym;
653 undef->type = bfd_link_hash_defined;
654 undef->u.def.value = sym->u.def.value;
655 undef->u.def.section = sym->u.def.section;
656 if (pe_enable_stdcall_fixup == -1)
658 einfo (_("Warning: resolving %s by linking to %s\n"),
659 undef->root.string, sym->root.string);
660 if (! gave_warning_message)
662 gave_warning_message = 1;
663 einfo(_("Use --enable-stdcall-fixup to disable these warnings\n"));
664 einfo(_("Use --disable-stdcall-fixup to disable these fixups\n"));
673 gld_${EMULATION_NAME}_after_open ()
675 /* Pass the wacky PE command line options into the output bfd.
676 FIXME: This should be done via a function, rather than by
677 including an internal BFD header. */
679 if (!coff_data (output_bfd)->pe)
680 einfo (_("%F%P: PE operations on non PE file.\n"));
682 pe_data (output_bfd)->pe_opthdr = pe;
683 pe_data (output_bfd)->dll = init[DLLOFF].value;
686 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
687 pe_fixup_stdcalls ();
689 pe_process_import_defs(output_bfd, &link_info);
690 if (link_info.shared)
691 pe_dll_build_sections (output_bfd, &link_info);
694 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
695 if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
697 /* The arm backend needs special fields in the output hash structure.
698 These will only be created if the output format is an arm format,
699 hence we do not support linking and changing output formats at the
700 same time. Use a link followed by objcopy to change output formats. */
701 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
705 /* Find a BFD that can hold the interworking stubs. */
706 LANG_FOR_EACH_INPUT_STATEMENT (is)
708 if (bfd_arm_pe_get_bfd_for_interworking (is->the_bfd, & link_info))
717 lang_input_statement_type *is2;
719 /* Careful - this is a shell script. Watch those dollar signs! */
720 /* Microsoft import libraries have every member named the same,
721 and not in the right order for us to link them correctly. We
722 must detect these and rename the members so that they'll link
723 correctly. There are three types of objects: the head, the
724 thunks, and the sentinel(s). The head is easy; it's the one
725 with idata2. We assume that the sentinels won't have relocs,
726 and the thunks will. It's easier than checking the symbol
727 table for external references. */
728 LANG_FOR_EACH_INPUT_STATEMENT (is)
730 if (is->the_bfd->my_archive)
732 bfd *arch = is->the_bfd->my_archive;
733 if (cur_arch != arch)
738 is2 && is2->the_bfd->my_archive == arch;
739 is2 = (lang_input_statement_type *)is2->next)
741 if (strcmp (is->the_bfd->filename, is2->the_bfd->filename))
748 int idata2 = 0, reloc_count=0;
752 for (sec = is->the_bfd->sections; sec; sec = sec->next)
754 if (strcmp (sec->name, ".idata\$2") == 0)
756 reloc_count += sec->reloc_count;
759 if (idata2) /* .idata2 is the TOC */
761 else if (reloc_count > 0) /* thunks */
766 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
767 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
768 is->the_bfd->filename = new_name;
770 new_name = xmalloc (strlen(is->filename) + 3);
771 sprintf (new_name, "%s.%c", is->filename, seq);
772 is->filename = new_name;
780 gld_${EMULATION_NAME}_before_allocation()
782 #ifdef TARGET_IS_ppcpe
783 /* Here we rummage through the found bfds to collect toc information */
785 LANG_FOR_EACH_INPUT_STATEMENT (is)
787 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
789 /* xgettext:c-format */
790 einfo (_("Errors encountered processing file %s\n"), is->filename);
795 /* We have seen it all. Allocate it, and carry on */
796 ppc_allocate_toc_section (&link_info);
797 #endif /* TARGET_IS_ppcpe */
799 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
800 /* FIXME: we should be able to set the size of the interworking stub
803 Here we rummage through the found bfds to collect glue
804 information. FIXME: should this be based on a command line
805 option? krk@cygnus.com */
807 LANG_FOR_EACH_INPUT_STATEMENT (is)
809 if (! bfd_arm_pe_process_before_allocation
810 (is->the_bfd, & link_info, support_old_code))
812 /* xgettext:c-format */
813 einfo (_("Errors encountered processing file %s for interworking"),
819 /* We have seen it all. Allocate it, and carry on */
820 bfd_arm_pe_allocate_interworking_sections (& link_info);
821 #endif /* TARGET_IS_armpe */
825 /* This is called when an input file isn't recognized as a BFD. We
826 check here for .DEF files and pull them in automatically. */
829 saw_option(char *option)
832 for (i=0; init[i].ptr; i++)
833 if (strcmp (init[i].symbol, option) == 0)
834 return init[i].inited;
839 gld_${EMULATION_NAME}_unrecognized_file(entry)
840 lang_input_statement_type *entry;
843 const char *ext = entry->filename + strlen (entry->filename) - 4;
845 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
847 if (pe_def_file == 0)
848 pe_def_file = def_file_empty ();
849 def_file_parse (entry->filename, pe_def_file);
852 int i, buflen=0, len;
854 for (i=0; i<pe_def_file->num_exports; i++)
856 len = strlen(pe_def_file->exports[i].internal_name);
860 buf = (char *) xmalloc (buflen);
861 for (i=0; i<pe_def_file->num_exports; i++)
863 struct bfd_link_hash_entry *h;
864 sprintf(buf, "_%s", pe_def_file->exports[i].internal_name);
866 h = bfd_link_hash_lookup (link_info.hash, buf, true, true, true);
867 if (h == (struct bfd_link_hash_entry *) NULL)
868 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
869 if (h->type == bfd_link_hash_new)
871 h->type = bfd_link_hash_undefined;
872 h->u.undef.abfd = NULL;
873 bfd_link_add_undef (link_info.hash, h);
878 /* def_file_print (stdout, pe_def_file); */
879 if (pe_def_file->is_dll == 1)
880 link_info.shared = 1;
882 if (pe_def_file->base_address != (bfd_vma)(-1))
885 pe_data (output_bfd)->pe_opthdr.ImageBase =
886 init[IMAGEBASEOFF].value = pe_def_file->base_address;
887 init[IMAGEBASEOFF].inited = 1;
888 if (image_base_statement)
889 image_base_statement->exp =
890 exp_assop ('=', "__image_base__", exp_intop (pe.ImageBase));
894 /* Not sure if these *should* be set */
895 if (pe_def_file->version_major != -1)
897 pe.MajorImageVersion = pe_def_file->version_major;
898 pe.MinorImageVersion = pe_def_file->version_minor;
901 if (pe_def_file->stack_reserve != -1
902 && ! saw_option ("__size_of_stack_reserve__"))
904 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
905 if (pe_def_file->stack_commit != -1)
906 pe.SizeOfStackCommit = pe_def_file->stack_commit;
908 if (pe_def_file->heap_reserve != -1
909 && ! saw_option ("__size_of_heap_reserve__"))
911 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
912 if (pe_def_file->heap_commit != -1)
913 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
924 gld_${EMULATION_NAME}_recognized_file(entry)
925 lang_input_statement_type *entry;
928 #ifdef TARGET_IS_i386pe
929 pe_dll_id_target ("pei-i386");
931 if (bfd_get_format (entry->the_bfd) == bfd_object)
933 const char *ext = entry->filename + strlen (entry->filename) - 4;
934 if (strcmp (ext, ".dll") == 0 || strcmp (ext, ".DLL") == 0)
935 return pe_implied_import_dll (entry->filename);
942 gld_${EMULATION_NAME}_finish ()
944 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
945 struct bfd_link_hash_entry * h;
947 if (thumb_entry_symbol != NULL)
949 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true);
951 if (h != (struct bfd_link_hash_entry *) NULL
952 && (h->type == bfd_link_hash_defined
953 || h->type == bfd_link_hash_defweak)
954 && h->u.def.section->output_section != NULL)
956 static char buffer[32];
959 /* Special procesing is required for a Thumb entry symbol. The
960 bottom bit of its address must be set. */
961 val = (h->u.def.value
962 + bfd_get_section_vma (output_bfd,
963 h->u.def.section->output_section)
964 + h->u.def.section->output_offset);
968 /* Now convert this value into a string and store it in entry_symbol
969 where the lang_finish() function will pick it up. */
973 sprintf_vma (buffer + 2, val);
975 if (entry_symbol != NULL && entry_from_cmdline)
976 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
977 thumb_entry_symbol, entry_symbol);
978 entry_symbol = buffer;
981 einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
983 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) */
986 if (link_info.shared)
988 pe_dll_fill_sections (output_bfd, &link_info);
989 if (pe_implib_filename)
990 pe_dll_generate_implib (pe_def_file, pe_implib_filename);
992 if (pe_out_def_filename)
993 pe_dll_generate_def_file (pe_out_def_filename);
998 /* Place an orphan section.
1000 We use this to put sections in a reasonable place in the file, and
1001 to ensure that they are aligned as required.
1003 We handle grouped sections here as well. A section named .foo$nn
1004 goes into the output section .foo. All grouped sections are sorted
1007 Grouped sections for the default sections are handled by the
1008 default linker script using wildcards, and are sorted by
1011 static asection *hold_section;
1012 static char *hold_section_name;
1013 static lang_output_section_statement_type *hold_use;
1014 static lang_output_section_statement_type *hold_text;
1015 static lang_output_section_statement_type *hold_rdata;
1016 static lang_output_section_statement_type *hold_data;
1017 static lang_output_section_statement_type *hold_bss;
1019 /* Place an orphan section. We use this to put random SHF_ALLOC
1020 sections in the right segment. */
1024 gld_${EMULATION_NAME}_place_orphan (file, s)
1025 lang_input_statement_type *file;
1028 const char *secname;
1031 if ((s->flags & SEC_ALLOC) == 0)
1034 secname = bfd_get_section_name (s->owner, s);
1036 /* Look through the script to see where to place this section. */
1040 hold_section_name = xstrdup (secname);
1041 if (!link_info.relocateable)
1043 dollar = strchr (hold_section_name, '$');
1049 lang_for_each_statement (gld${EMULATION_NAME}_place_section);
1051 if (hold_use == NULL)
1053 lang_output_section_statement_type *place;
1055 asection *snew, **pps;
1056 lang_statement_list_type *old;
1057 lang_statement_list_type add;
1058 etree_type *address;
1060 /* Try to put the new output section in a reasonable place based
1061 on the section name and section flags. */
1063 if ((s->flags & SEC_HAS_CONTENTS) == 0
1064 && hold_bss != NULL)
1066 else if ((s->flags & SEC_READONLY) == 0
1067 && hold_data != NULL)
1069 else if ((s->flags & SEC_CODE) == 0
1070 && (s->flags & SEC_READONLY) != 0
1071 && hold_rdata != NULL)
1073 else if ((s->flags & SEC_READONLY) != 0
1074 && hold_text != NULL)
1077 /* Choose a unique name for the section. This will be needed if
1078 the same section name appears in the input file with
1079 different loadable or allocateable characteristics. */
1080 outsecname = xstrdup (hold_section_name);
1081 if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
1087 len = strlen (outsecname);
1088 newname = xmalloc (len + 5);
1089 strcpy (newname, outsecname);
1093 sprintf (newname + len, "%d", i);
1096 while (bfd_get_section_by_name (output_bfd, newname) != NULL);
1099 outsecname = newname;
1102 /* We don't want to free OUTSECNAME, as it may get attached to
1103 the output section statement. */
1105 /* Create the section in the output file, and put it in the
1106 right place. This shuffling is to make the output file look
1108 snew = bfd_make_section (output_bfd, outsecname);
1110 einfo ("%P%F: output format %s cannot represent section called %s\n",
1111 output_bfd->xvec->name, outsecname);
1112 if (place != NULL && place->bfd_section != NULL)
1114 for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
1117 snew->next = place->bfd_section->next;
1118 place->bfd_section->next = snew;
1121 /* Start building a list of statements for this section. */
1124 lang_list_init (stat_ptr);
1126 if (link_info.relocateable)
1130 /* All sections in an executable must be aligned to a page
1132 address = exp_unop (ALIGN_K,
1133 exp_nameop (NAME, "__section_alignment__"));
1136 lang_enter_output_section_statement (outsecname, address, 0,
1138 (etree_type *) NULL,
1139 (etree_type *) NULL,
1140 (etree_type *) NULL);
1142 hold_use = lang_output_section_statement_lookup (outsecname);
1144 lang_leave_output_section_statement
1145 ((bfd_vma) 0, "*default*",
1146 (struct lang_output_section_phdr_list *) NULL);
1148 /* Now stick the new statement list right after PLACE. */
1151 *add.tail = place->header.next;
1152 place->header.next = add.head;
1159 wild_doit (&hold_use->children, s, hold_use, file);
1162 lang_statement_union_type **pl;
1163 boolean found_dollar;
1164 lang_statement_list_type list;
1166 /* The section name has a '$'. Sort it with the other '$'
1169 found_dollar = false;
1170 for (pl = &hold_use->children.head; *pl != NULL; pl = &(*pl)->next)
1172 lang_input_section_type *ls;
1175 if ((*pl)->header.type != lang_input_section_enum)
1178 ls = &(*pl)->input_section;
1180 lname = bfd_get_section_name (ls->ifile->the_bfd, ls->section);
1181 if (strchr (lname, '$') == NULL)
1188 found_dollar = true;
1189 if (strcmp (secname, lname) < 0)
1194 lang_list_init (&list);
1195 wild_doit (&list, s, hold_use, file);
1196 if (list.head != NULL)
1198 ASSERT (list.head->next == NULL);
1199 list.head->next = *pl;
1204 free (hold_section_name);
1210 gld${EMULATION_NAME}_place_section (s)
1211 lang_statement_union_type *s;
1213 lang_output_section_statement_type *os;
1215 if (s->header.type != lang_output_section_statement_enum)
1218 os = &s->output_section_statement;
1220 if (strcmp (os->name, hold_section_name) == 0
1221 && os->bfd_section != NULL
1222 && ((hold_section->flags & (SEC_LOAD | SEC_ALLOC))
1223 == (os->bfd_section->flags & (SEC_LOAD | SEC_ALLOC))))
1226 if (strcmp (os->name, ".text") == 0)
1228 else if (strcmp (os->name, ".rdata") == 0)
1230 else if (strcmp (os->name, ".data") == 0)
1232 else if (strcmp (os->name, ".bss") == 0)
1237 gld_${EMULATION_NAME}_get_script(isfile)
1240 # Scripts compiled in.
1241 # sed commands to quote an ld script as a C string.
1242 sc="-f stringify.sed"
1244 cat >>e${EMULATION_NAME}.c <<EOF
1248 if (link_info.relocateable == true && config.build_constructors == true)
1251 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1252 echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
1253 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1254 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1255 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1256 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1257 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1258 echo ' ; else return' >> e${EMULATION_NAME}.c
1259 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1260 echo '; }' >> e${EMULATION_NAME}.c
1262 cat >>e${EMULATION_NAME}.c <<EOF
1265 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1267 gld_${EMULATION_NAME}_before_parse,
1270 gld_${EMULATION_NAME}_after_parse,
1271 gld_${EMULATION_NAME}_after_open,
1272 after_allocation_default,
1273 set_output_arch_default,
1274 ldemul_default_target,
1275 gld_${EMULATION_NAME}_before_allocation,
1276 gld_${EMULATION_NAME}_get_script,
1277 "${EMULATION_NAME}",
1279 gld_${EMULATION_NAME}_finish, /* finish */
1280 NULL, /* create output section statements */
1281 NULL, /* open dynamic archive */
1282 gld_${EMULATION_NAME}_place_orphan,
1283 gld_${EMULATION_NAME}_set_symbols,
1284 gld_${EMULATION_NAME}_parse_args,
1285 gld_${EMULATION_NAME}_unrecognized_file,
1286 gld_${EMULATION_NAME}_list_options,
1287 gld_${EMULATION_NAME}_recognized_file