1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 if [ -z "$MACHINE" ]; then
6 OUTPUT_ARCH=${ARCH}:${MACHINE}
8 rm -f e${EMULATION_NAME}.c
9 (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
10 cat >>e${EMULATION_NAME}.c <<EOF
11 /* This file is part of GLD, the Gnu Linker.
12 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001
13 Free Software Foundation, Inc.
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 2 of the License, or
18 (at your option) any later version.
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
30 /* The original file generated returned different default scripts depending
31 on whether certain switches were set, but these switches pertain to the
32 Linux system and that particular version of coff. In the NT case, we
33 only determine if the subsystem is console or windows in order to select
34 the correct entry point by default. */
40 #include "libiberty.h"
51 #include "coff/internal.h"
53 /* FIXME: This is a BFD internal header file, and we should not be
55 #include "../bfd/libcoff.h"
62 #define TARGET_IS_${EMULATION_NAME}
64 /* Permit the emulation parameters to override the default section
65 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
66 it seem that include/coff/internal.h should not define
67 PE_DEF_SECTION_ALIGNMENT. */
68 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
69 #undef PE_DEF_SECTION_ALIGNMENT
70 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
73 #if defined(TARGET_IS_i386pe)
76 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe) || defined(TARGET_IS_armpe)
80 #if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
81 #define PE_DEF_SUBSYSTEM 3
83 #undef NT_EXE_IMAGE_BASE
84 #undef PE_DEF_SECTION_ALIGNMENT
85 #undef PE_DEF_FILE_ALIGNMENT
86 #define NT_EXE_IMAGE_BASE 0x00010000
87 #ifdef TARGET_IS_armpe
88 #define PE_DEF_SECTION_ALIGNMENT 0x00001000
89 #define PE_DEF_SUBSYSTEM 9
91 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
92 #define PE_DEF_SUBSYSTEM 2
94 #define PE_DEF_FILE_ALIGNMENT 0x00000200
97 #ifdef TARGET_IS_arm_epoc_pe
98 #define bfd_arm_pe_allocate_interworking_sections \
99 bfd_arm_epoc_pe_allocate_interworking_sections
100 #define bfd_arm_pe_get_bfd_for_interworking \
101 bfd_arm_epoc_pe_get_bfd_for_interworking
102 #define bfd_arm_pe_process_before_allocation \
103 bfd_arm_epoc_pe_process_before_allocation
106 static void gld_${EMULATION_NAME}_set_symbols PARAMS ((void));
107 static void gld_${EMULATION_NAME}_after_open PARAMS ((void));
108 static void gld_${EMULATION_NAME}_before_parse PARAMS ((void));
109 static void gld_${EMULATION_NAME}_after_parse PARAMS ((void));
110 static void gld_${EMULATION_NAME}_before_allocation PARAMS ((void));
111 static asection *output_prev_sec_find
112 PARAMS ((lang_output_section_statement_type *));
113 static boolean gld_${EMULATION_NAME}_place_orphan
114 PARAMS ((lang_input_statement_type *, asection *));
115 static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *));
116 static int gld_${EMULATION_NAME}_parse_args PARAMS ((int, char **));
117 static void gld_${EMULATION_NAME}_finish PARAMS ((void));
118 static boolean gld_${EMULATION_NAME}_open_dynamic_archive
119 PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
120 static void gld_${EMULATION_NAME}_list_options PARAMS ((FILE *));
121 static void set_pe_name PARAMS ((char *, long));
122 static void set_pe_subsystem PARAMS ((void));
123 static void set_pe_value PARAMS ((char *));
124 static void set_pe_stack_heap PARAMS ((char *, char *));
127 static boolean pe_undef_cdecl_match
128 PARAMS ((struct bfd_link_hash_entry *, PTR));
129 static void pe_fixup_stdcalls PARAMS ((void));
130 static int make_import_fixup PARAMS ((arelent *, asection *));
131 static void pe_find_data_imports PARAMS ((void));
134 static boolean pr_sym PARAMS ((struct bfd_hash_entry *, PTR string));
135 static boolean gld_${EMULATION_NAME}_unrecognized_file
136 PARAMS ((lang_input_statement_type *));
137 static boolean gld_${EMULATION_NAME}_recognized_file
138 PARAMS ((lang_input_statement_type *));
139 static int gld_${EMULATION_NAME}_find_potential_libraries
140 PARAMS ((char *, lang_input_statement_type *));
143 static struct internal_extra_pe_aouthdr pe;
145 static int support_old_code = 0;
146 static char * thumb_entry_symbol = NULL;
147 static lang_assignment_statement_type *image_base_statement = 0;
150 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable */
151 static char *pe_out_def_filename = NULL;
152 static char *pe_implib_filename = NULL;
153 static int pe_enable_auto_image_base = 0;
154 static char *pe_dll_search_prefix = NULL;
157 extern const char *output_filename;
160 gld_${EMULATION_NAME}_before_parse()
162 const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}");
165 ldfile_output_architecture = arch->arch;
166 ldfile_output_machine = arch->mach;
167 ldfile_output_machine_name = arch->printable_name;
170 ldfile_output_architecture = bfd_arch_${ARCH};
171 output_filename = "${EXECUTABLE_NAME:-a.exe}";
173 config.dynamic_link = true;
174 config.has_shared = 1;
175 /* link_info.pei386_auto_import = true; */
177 #if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
178 #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe
179 lang_add_entry ("WinMainCRTStartup", 1);
181 lang_add_entry ("_WinMainCRTStartup", 1);
187 /* PE format extra command line options. */
189 /* Used for setting flags in the PE header. */
190 #define OPTION_BASE_FILE (300 + 1)
191 #define OPTION_DLL (OPTION_BASE_FILE + 1)
192 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
193 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
194 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
195 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
196 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
197 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
198 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
199 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
200 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
201 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
202 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
203 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
204 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
205 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
206 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
207 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
208 #define OPTION_KILL_ATS (OPTION_EXCLUDE_SYMBOLS + 1)
209 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
210 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
211 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
212 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
213 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
214 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
215 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
216 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
217 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
218 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
219 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
220 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
221 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
222 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
224 static struct option longopts[] = {
226 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
227 {"dll", no_argument, NULL, OPTION_DLL},
228 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
229 {"heap", required_argument, NULL, OPTION_HEAP},
230 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
231 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
232 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
233 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
234 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
235 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
236 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
237 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
238 {"stack", required_argument, NULL, OPTION_STACK},
239 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
240 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
241 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
243 /* getopt allows abbreviations, so we do this to stop it from treating -o
244 as an abbreviation for this option */
245 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
246 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
247 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
248 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
249 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
250 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
251 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
252 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
253 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
254 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
255 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
256 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
257 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
258 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
259 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
260 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
261 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
262 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
264 {NULL, no_argument, NULL, 0}
268 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
269 parameters which may be input from the command line */
280 #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
282 static definfo init[] =
284 /* imagebase must be first */
285 #define IMAGEBASEOFF 0
286 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
288 {&dll, sizeof(dll), 0, "__dll__", 0},
289 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
290 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
291 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
292 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
293 D(MajorImageVersion,"__major_image_version__", 1),
294 D(MinorImageVersion,"__minor_image_version__", 0),
295 #ifdef TARGET_IS_armpe
296 D(MajorSubsystemVersion,"__major_subsystem_version__", 2),
298 D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
300 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
301 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
302 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
303 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
304 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
305 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
306 D(LoaderFlags,"__loader_flags__", 0x0),
307 { NULL, 0, 0, NULL, 0 }
311 gld_${EMULATION_NAME}_list_options (file)
314 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
315 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
316 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
317 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
318 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
319 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
320 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
321 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
322 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
323 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
324 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
325 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
326 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
327 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
328 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
329 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
331 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
332 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
333 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
334 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
335 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
336 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
337 fprintf (file, _(" --out-implib <file> Generate import library\n"));
338 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
339 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
340 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n"));
341 fprintf (file, _(" create __imp_<SYMBOL> as well.\n"));
342 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n"));
343 fprintf (file, _(" unless user specifies one\n"));
344 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
345 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll witout an\n"));
346 fprintf (file, _(" importlib, use <string><basename>.dll \n"));
347 fprintf (file, _(" in preference to lib<basename>.dll \n"));
348 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to \n"));
349 fprintf (file, _(" __imp_sym for DATA references\n"));
350 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
351 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n"));
352 fprintf (file, _(" or linking to DLLs (esp. auto-import)\n"));
357 set_pe_name (name, val)
362 /* Find the name and set it. */
363 for (i = 0; init[i].ptr; i++)
365 if (strcmp (name, init[i].symbol) == 0)
390 { "native", 1, "NtProcessStartup" },
391 #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe
392 { "windows", 2, "WinMainCRTStartup" },
394 { "windows", 2, "WinMainCRTStartup" },
396 { "console", 3, "mainCRTStartup" },
398 /* The Microsoft linker does not recognize this. */
401 { "posix", 7, "__PosixProcessStartup"},
402 { "wince", 9, "_WinMainCRTStartup" },
406 sver = strchr (optarg, ':');
408 len = strlen (optarg);
414 set_pe_name ("__major_subsystem_version__",
415 strtoul (sver + 1, &end, 0));
417 set_pe_name ("__minor_subsystem_version__",
418 strtoul (end + 1, &end, 0));
420 einfo (_("%P: warning: bad version number in -subsystem option\n"));
423 for (i = 0; v[i].name; i++)
425 if (strncmp (optarg, v[i].name, len) == 0
426 && v[i].name[len] == '\0')
428 const char *initial_symbol_char;
431 set_pe_name ("__subsystem__", v[i].value);
433 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
434 if (*initial_symbol_char == '\0')
440 /* lang_add_entry expects its argument to be permanently
441 allocated, so we don't free this string. */
442 alc_entry = xmalloc (strlen (initial_symbol_char)
443 + strlen (v[i].entry)
445 strcpy (alc_entry, initial_symbol_char);
446 strcat (alc_entry, v[i].entry);
450 lang_add_entry (entry, 1);
456 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
468 set_pe_name (name, strtoul (optarg, &end, 0));
471 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
477 set_pe_stack_heap (resname, comname)
481 set_pe_value (resname);
486 set_pe_value (comname);
489 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
495 gld_${EMULATION_NAME}_parse_args(argc, argv)
501 int prevoptind = optind;
502 int prevopterr = opterr;
504 static int lastoptind = -1;
506 if (lastoptind != optind)
512 optc = getopt_long_only (argc, argv, "-", longopts, &longind);
523 case OPTION_BASE_FILE:
524 link_info.base_file = (PTR) fopen (optarg, FOPEN_WB);
525 if (link_info.base_file == NULL)
527 /* xgettext:c-format */
528 fprintf (stderr, _("%s: Can't open base file %s\n"),
529 program_name, optarg);
536 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
539 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
541 case OPTION_SUBSYSTEM:
544 case OPTION_MAJOR_OS_VERSION:
545 set_pe_value ("__major_os_version__");
547 case OPTION_MINOR_OS_VERSION:
548 set_pe_value ("__minor_os_version__");
550 case OPTION_MAJOR_SUBSYSTEM_VERSION:
551 set_pe_value ("__major_subsystem_version__");
553 case OPTION_MINOR_SUBSYSTEM_VERSION:
554 set_pe_value ("__minor_subsystem_version__");
556 case OPTION_MAJOR_IMAGE_VERSION:
557 set_pe_value ("__major_image_version__");
559 case OPTION_MINOR_IMAGE_VERSION:
560 set_pe_value ("__minor_image_version__");
562 case OPTION_FILE_ALIGNMENT:
563 set_pe_value ("__file_alignment__");
565 case OPTION_SECTION_ALIGNMENT:
566 set_pe_value ("__section_alignment__");
569 set_pe_name ("__dll__", 1);
571 case OPTION_IMAGE_BASE:
572 set_pe_value ("__image_base__");
574 case OPTION_SUPPORT_OLD_CODE:
575 support_old_code = 1;
577 case OPTION_THUMB_ENTRY:
578 thumb_entry_symbol = optarg;
582 pe_out_def_filename = xstrdup (optarg);
584 case OPTION_EXPORT_ALL:
585 pe_dll_export_everything = 1;
587 case OPTION_EXCLUDE_SYMBOLS:
588 pe_dll_add_excludes (optarg);
590 case OPTION_KILL_ATS:
593 case OPTION_STDCALL_ALIASES:
594 pe_dll_stdcall_aliases = 1;
596 case OPTION_ENABLE_STDCALL_FIXUP:
597 pe_enable_stdcall_fixup = 1;
599 case OPTION_DISABLE_STDCALL_FIXUP:
600 pe_enable_stdcall_fixup = 0;
602 case OPTION_IMPLIB_FILENAME:
603 pe_implib_filename = xstrdup (optarg);
605 case OPTION_WARN_DUPLICATE_EXPORTS:
606 pe_dll_warn_dup_exports = 1;
608 case OPTION_IMP_COMPAT:
609 pe_dll_compat_implib = 1;
611 case OPTION_ENABLE_AUTO_IMAGE_BASE:
612 pe_enable_auto_image_base = 1;
614 case OPTION_DISABLE_AUTO_IMAGE_BASE:
615 pe_enable_auto_image_base = 0;
617 case OPTION_DLL_SEARCH_PREFIX:
618 pe_dll_search_prefix = xstrdup( optarg );
620 case OPTION_NO_DEFAULT_EXCLUDES:
621 pe_dll_do_default_excludes = 0;
623 case OPTION_DLL_ENABLE_AUTO_IMPORT:
624 link_info.pei386_auto_import = true;
626 case OPTION_DLL_DISABLE_AUTO_IMPORT:
627 link_info.pei386_auto_import = false;
629 case OPTION_ENABLE_EXTRA_PE_DEBUG:
630 pe_dll_extra_pe_debug = 1;
640 strhash (const char *str)
642 const unsigned char *s;
649 s = (const unsigned char *) str;
650 while ((c = *s++) != '\0')
652 hash += c + (c << 17);
656 hash += len + (len << 17);
662 /* Use the output file to create a image base for relocatable DLLs. */
664 compute_dll_image_base (const char *ofile)
666 unsigned long hash = strhash (ofile);
667 return 0x60000000 | ((hash << 16) & 0x0FFC0000);
671 /* Assign values to the special symbols before the linker script is
675 gld_${EMULATION_NAME}_set_symbols ()
677 /* Run through and invent symbols for all the
678 names and insert the defaults. */
680 lang_statement_list_type *save;
682 if (!init[IMAGEBASEOFF].inited)
684 if (link_info.relocateable)
685 init[IMAGEBASEOFF].value = 0;
686 else if (init[DLLOFF].value || link_info.shared)
688 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base) ?
689 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
691 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
694 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
697 /* Don't do any symbol assignments if this is a relocateable link. */
698 if (link_info.relocateable)
701 /* Glue the assignments into the abs section */
704 stat_ptr = &(abs_output_section->children);
706 for (j = 0; init[j].ptr; j++)
708 long val = init[j].value;
709 lang_assignment_statement_type *rv;
710 rv = lang_add_assignment (exp_assop ('=' ,init[j].symbol, exp_intop (val)));
711 if (init[j].size == sizeof(short))
712 *(short *)init[j].ptr = val;
713 else if (init[j].size == sizeof(int))
714 *(int *)init[j].ptr = val;
715 else if (init[j].size == sizeof(long))
716 *(long *)init[j].ptr = val;
717 /* This might be a long long or other special type. */
718 else if (init[j].size == sizeof(bfd_vma))
719 *(bfd_vma *)init[j].ptr = val;
721 if (j == IMAGEBASEOFF)
722 image_base_statement = rv;
724 /* Restore the pointer. */
727 if (pe.FileAlignment >
730 einfo (_("%P: warning, file alignment > section alignment.\n"));
734 /* This is called after the linker script and the command line options
738 gld_${EMULATION_NAME}_after_parse ()
740 /* The Windows libraries are designed for the linker to treat the
741 entry point as an undefined symbol. Otherwise, the .obj that
742 defines mainCRTStartup is brought in because it is the first
743 encountered in libc.lib and it has other symbols in it which will
744 be pulled in by the link process. To avoid this, we act as
745 though the user specified -u with the entry point symbol.
747 This function is called after the linker script and command line
748 options have been read, so at this point we know the right entry
749 point. This function is called before the input files are
750 opened, so registering the symbol as undefined will make a
753 if (! link_info.relocateable && entry_symbol != NULL)
754 ldlang_add_undef (entry_symbol);
758 static struct bfd_link_hash_entry *pe_undef_found_sym;
761 pe_undef_cdecl_match (h, string)
762 struct bfd_link_hash_entry *h;
766 sl = strlen (string); /* silence compiler warning */
767 if (h->type == bfd_link_hash_defined
768 && strncmp (h->root.string, string, sl) == 0
769 && h->root.string[sl] == '@')
771 pe_undef_found_sym = h;
780 static int gave_warning_message = 0;
781 struct bfd_link_hash_entry *undef, *sym;
783 if (pe_dll_extra_pe_debug)
785 printf ("%s\n", __FUNCTION__);
788 for (undef = link_info.hash->undefs; undef; undef=undef->next)
789 if (undef->type == bfd_link_hash_undefined)
791 at = strchr (undef->root.string, '@');
794 /* The symbol is a stdcall symbol, so let's look for a cdecl
795 symbol with the same name and resolve to that */
796 char *cname = xstrdup (undef->root.string);
797 at = strchr (cname, '@');
799 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
800 if (sym && sym->type == bfd_link_hash_defined)
802 undef->type = bfd_link_hash_defined;
803 undef->u.def.value = sym->u.def.value;
804 undef->u.def.section = sym->u.def.section;
805 if (pe_enable_stdcall_fixup == -1)
807 einfo (_("Warning: resolving %s by linking to %s\n"),
808 undef->root.string, cname);
809 if (! gave_warning_message)
811 gave_warning_message = 1;
812 einfo(_("Use --enable-stdcall-fixup to disable these warnings\n"));
813 einfo(_("Use --disable-stdcall-fixup to disable these fixups\n"));
820 /* The symbol is a cdecl symbol, so we look for stdcall
821 symbols - which means scanning the whole symbol table */
822 pe_undef_found_sym = 0;
823 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
824 (PTR) undef->root.string);
825 sym = pe_undef_found_sym;
828 undef->type = bfd_link_hash_defined;
829 undef->u.def.value = sym->u.def.value;
830 undef->u.def.section = sym->u.def.section;
831 if (pe_enable_stdcall_fixup == -1)
833 einfo (_("Warning: resolving %s by linking to %s\n"),
834 undef->root.string, sym->root.string);
835 if (! gave_warning_message)
837 gave_warning_message = 1;
838 einfo(_("Use --enable-stdcall-fixup to disable these warnings\n"));
839 einfo(_("Use --disable-stdcall-fixup to disable these fixups\n"));
848 make_import_fixup (rel, s)
852 struct symbol_cache_entry *sym = *rel->sym_ptr_ptr;
854 if (pe_dll_extra_pe_debug)
856 printf ("arelent: %s@%#x: add=%li\n", sym->name,
857 (int) rel->address, rel->addend);
862 if (!bfd_get_section_contents(s->owner, s, &addend, rel->address, sizeof(addend)))
864 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
865 s->owner, s, rel->address);
869 pe_create_import_fixup (rel);
872 einfo (_("%C: variable '%T' can't be auto-imported. Please read the documentation for ld's --enable-auto-import for details.\n"),
873 s->owner, s, rel->address, sym->name);
881 char *pe_data_import_dll;
884 pe_find_data_imports ()
886 struct bfd_link_hash_entry *undef, *sym;
887 for (undef = link_info.hash->undefs; undef; undef=undef->next)
889 if (undef->type == bfd_link_hash_undefined)
891 /* C++ symbols are *long* */
893 if (pe_dll_extra_pe_debug)
895 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
897 sprintf (buf, "__imp_%s", undef->root.string);
899 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
900 if (sym && sym->type == bfd_link_hash_defined)
902 einfo (_("Warning: resolving %s by linking to %s (auto-import)\n"),
903 undef->root.string, buf);
905 bfd *b = sym->u.def.section->owner;
907 int nsyms, symsize, i;
909 symsize = bfd_get_symtab_upper_bound (b);
910 symbols = (asymbol **) xmalloc (symsize);
911 nsyms = bfd_canonicalize_symtab (b, symbols);
913 for (i = 0; i < nsyms; i++)
915 if (memcmp(symbols[i]->name, "__head_",
916 sizeof ("__head_") - 1))
918 if (pe_dll_extra_pe_debug)
920 printf ("->%s\n", symbols[i]->name);
922 pe_data_import_dll = (char*) (symbols[i]->name +
923 sizeof ("__head_") - 1);
928 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
931 /* let's differentiate it somehow from defined */
932 undef->type = bfd_link_hash_defweak;
933 /* we replace original name with __imp_ prefixed, this
934 1) may trash memory 2) leads to duplicate symbol generation.
935 Still, IMHO it's better than having name poluted. */
936 undef->root.string = sym->root.string;
937 undef->u.def.value = sym->u.def.value;
938 undef->u.def.section = sym->u.def.section;
943 #endif /* DLL_SUPPORT */
947 struct bfd_hash_entry *h;
948 PTR string ATTRIBUTE_UNUSED;
950 if (pe_dll_extra_pe_debug)
952 printf("+%s\n",h->string);
959 gld_${EMULATION_NAME}_after_open ()
962 if (pe_dll_extra_pe_debug)
965 struct bfd_link_hash_entry *sym;
966 printf ("%s()\n", __FUNCTION__);
968 for (sym = link_info.hash->undefs; sym; sym=sym->next)
969 printf ("-%s\n", sym->root.string);
970 bfd_hash_traverse (&link_info.hash->table, pr_sym,NULL);
972 for (a = link_info.input_bfds; a; a = a->link_next)
974 printf("*%s\n",a->filename);
978 /* Pass the wacky PE command line options into the output bfd.
979 FIXME: This should be done via a function, rather than by
980 including an internal BFD header. */
982 if (coff_data (output_bfd) == NULL || coff_data (output_bfd)->pe == NULL)
983 einfo (_("%F%P: PE operations on non PE file.\n"));
985 pe_data (output_bfd)->pe_opthdr = pe;
986 pe_data (output_bfd)->dll = init[DLLOFF].value;
989 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
990 pe_fixup_stdcalls ();
992 pe_find_data_imports ();
994 pe_process_import_defs(output_bfd, &link_info);
995 if (link_info.shared)
996 pe_dll_build_sections (output_bfd, &link_info);
998 #ifndef TARGET_IS_i386pe
999 #ifndef TARGET_IS_armpe
1001 pe_exe_build_sections (output_bfd, &link_info);
1006 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1007 if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
1009 /* The arm backend needs special fields in the output hash structure.
1010 These will only be created if the output format is an arm format,
1011 hence we do not support linking and changing output formats at the
1012 same time. Use a link followed by objcopy to change output formats. */
1013 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1017 /* Find a BFD that can hold the interworking stubs. */
1018 LANG_FOR_EACH_INPUT_STATEMENT (is)
1020 if (bfd_arm_pe_get_bfd_for_interworking (is->the_bfd, & link_info))
1027 /* This next chunk of code tries to detect the case where you have
1028 two import libraries for the same DLL (specifically,
1029 symbolically linking libm.a and libc.a in cygwin to
1030 libcygwin.a). In those cases, it's possible for function
1031 thunks from the second implib to be used but without the
1032 head/tail objects, causing an improper import table. We detect
1033 those cases and rename the "other" import libraries to match
1034 the one the head/tail come from, so that the linker will sort
1035 things nicely and produce a valid import table. */
1037 LANG_FOR_EACH_INPUT_STATEMENT (is)
1039 if (is->the_bfd->my_archive)
1041 int idata2 = 0, reloc_count=0, is_imp = 0;
1044 /* See if this is an import library thunk. */
1045 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1047 if (strcmp (sec->name, ".idata\$2") == 0)
1049 if (strncmp (sec->name, ".idata\$", 7) == 0)
1051 reloc_count += sec->reloc_count;
1054 if (is_imp && !idata2 && reloc_count)
1056 /* It is, look for the reference to head and see if it's
1057 from our own library. */
1058 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1067 symsize = bfd_get_symtab_upper_bound (is->the_bfd);
1070 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1074 symbols = (asymbol **) xmalloc (symsize);
1075 symsize = bfd_canonicalize_symtab (is->the_bfd, symbols);
1078 einfo ("%X%P: unable to process symbols: %E");
1082 relocs = (arelent **) xmalloc ((size_t) relsize);
1083 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1088 einfo ("%X%P: unable to process relocs: %E");
1092 for (i = 0; i < nrelocs; i++)
1094 struct symbol_cache_entry *s;
1095 struct bfd_link_hash_entry * blhe;
1099 s = (relocs[i]->sym_ptr_ptr)[0];
1101 if (s->flags & BSF_LOCAL)
1104 /* Thunk section with reloc to another bfd. */
1105 blhe = bfd_link_hash_lookup (link_info.hash,
1107 false, false, true);
1110 || blhe->type != bfd_link_hash_defined)
1113 other_bfd = blhe->u.def.section->owner;
1115 if (strcmp (is->the_bfd->my_archive->filename,
1116 other_bfd->my_archive->filename) == 0)
1119 /* Rename this implib to match the other. */
1120 n = (char *) xmalloc (strlen (other_bfd->my_archive->filename) + 1);
1122 strcpy (n, other_bfd->my_archive->filename);
1124 is->the_bfd->my_archive->filename = n;
1128 /* Note - we do not free the symbols,
1129 they are now cached in the BFD. */
1139 lang_input_statement_type *is2;
1141 /* Careful - this is a shell script. Watch those dollar signs! */
1142 /* Microsoft import libraries have every member named the same,
1143 and not in the right order for us to link them correctly. We
1144 must detect these and rename the members so that they'll link
1145 correctly. There are three types of objects: the head, the
1146 thunks, and the sentinel(s). The head is easy; it's the one
1147 with idata2. We assume that the sentinels won't have relocs,
1148 and the thunks will. It's easier than checking the symbol
1149 table for external references. */
1150 LANG_FOR_EACH_INPUT_STATEMENT (is)
1152 if (is->the_bfd->my_archive)
1154 bfd *arch = is->the_bfd->my_archive;
1155 if (cur_arch != arch)
1160 is2 && is2->the_bfd->my_archive == arch;
1161 is2 = (lang_input_statement_type *)is2->next)
1163 if (strcmp (is->the_bfd->filename, is2->the_bfd->filename))
1170 int idata2 = 0, reloc_count=0;
1172 char *new_name, seq;
1174 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1176 if (strcmp (sec->name, ".idata\$2") == 0)
1178 reloc_count += sec->reloc_count;
1181 if (idata2) /* .idata2 is the TOC */
1183 else if (reloc_count > 0) /* thunks */
1188 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1189 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1190 is->the_bfd->filename = new_name;
1192 new_name = xmalloc (strlen (is->filename) + 3);
1193 sprintf (new_name, "%s.%c", is->filename, seq);
1194 is->filename = new_name;
1202 gld_${EMULATION_NAME}_before_allocation()
1204 #ifdef TARGET_IS_ppcpe
1205 /* Here we rummage through the found bfds to collect toc information */
1207 LANG_FOR_EACH_INPUT_STATEMENT (is)
1209 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1211 /* xgettext:c-format */
1212 einfo (_("Errors encountered processing file %s\n"), is->filename);
1217 /* We have seen it all. Allocate it, and carry on */
1218 ppc_allocate_toc_section (&link_info);
1219 #endif /* TARGET_IS_ppcpe */
1221 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1222 /* FIXME: we should be able to set the size of the interworking stub
1225 Here we rummage through the found bfds to collect glue
1226 information. FIXME: should this be based on a command line
1227 option? krk@cygnus.com */
1229 LANG_FOR_EACH_INPUT_STATEMENT (is)
1231 if (! bfd_arm_pe_process_before_allocation
1232 (is->the_bfd, & link_info, support_old_code))
1234 /* xgettext:c-format */
1235 einfo (_("Errors encountered processing file %s for interworking"),
1241 /* We have seen it all. Allocate it, and carry on */
1242 bfd_arm_pe_allocate_interworking_sections (& link_info);
1243 #endif /* TARGET_IS_armpe */
1247 /* This is called when an input file isn't recognized as a BFD. We
1248 check here for .DEF files and pull them in automatically. */
1251 saw_option(char *option)
1254 for (i=0; init[i].ptr; i++)
1255 if (strcmp (init[i].symbol, option) == 0)
1256 return init[i].inited;
1259 #endif /* DLL_SUPPORT */
1262 gld_${EMULATION_NAME}_unrecognized_file(entry)
1263 lang_input_statement_type *entry ATTRIBUTE_UNUSED;
1266 const char *ext = entry->filename + strlen (entry->filename) - 4;
1268 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1270 if (pe_def_file == 0)
1271 pe_def_file = def_file_empty ();
1272 def_file_parse (entry->filename, pe_def_file);
1275 int i, buflen=0, len;
1277 for (i=0; i<pe_def_file->num_exports; i++)
1279 len = strlen(pe_def_file->exports[i].internal_name);
1283 buf = (char *) xmalloc (buflen);
1284 for (i=0; i<pe_def_file->num_exports; i++)
1286 struct bfd_link_hash_entry *h;
1287 sprintf(buf, "_%s", pe_def_file->exports[i].internal_name);
1289 h = bfd_link_hash_lookup (link_info.hash, buf, true, true, true);
1290 if (h == (struct bfd_link_hash_entry *) NULL)
1291 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1292 if (h->type == bfd_link_hash_new)
1294 h->type = bfd_link_hash_undefined;
1295 h->u.undef.abfd = NULL;
1296 bfd_link_add_undef (link_info.hash, h);
1301 /* def_file_print (stdout, pe_def_file); */
1302 if (pe_def_file->is_dll == 1)
1303 link_info.shared = 1;
1305 if (pe_def_file->base_address != (bfd_vma)(-1))
1308 pe_data (output_bfd)->pe_opthdr.ImageBase =
1309 init[IMAGEBASEOFF].value = pe_def_file->base_address;
1310 init[IMAGEBASEOFF].inited = 1;
1311 if (image_base_statement)
1312 image_base_statement->exp =
1313 exp_assop ('=', "__image_base__", exp_intop (pe.ImageBase));
1317 /* Not sure if these *should* be set */
1318 if (pe_def_file->version_major != -1)
1320 pe.MajorImageVersion = pe_def_file->version_major;
1321 pe.MinorImageVersion = pe_def_file->version_minor;
1324 if (pe_def_file->stack_reserve != -1
1325 && ! saw_option ("__size_of_stack_reserve__"))
1327 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1328 if (pe_def_file->stack_commit != -1)
1329 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1331 if (pe_def_file->heap_reserve != -1
1332 && ! saw_option ("__size_of_heap_reserve__"))
1334 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1335 if (pe_def_file->heap_commit != -1)
1336 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1347 gld_${EMULATION_NAME}_recognized_file(entry)
1348 lang_input_statement_type *entry ATTRIBUTE_UNUSED;
1351 #ifdef TARGET_IS_i386pe
1352 pe_dll_id_target ("pei-i386");
1354 #ifdef TARGET_IS_shpe
1355 pe_dll_id_target ("pei-shl");
1357 #ifdef TARGET_IS_mipspe
1358 pe_dll_id_target ("pei-mips");
1360 #ifdef TARGET_IS_armpe
1361 pe_dll_id_target ("pei-arm-little");
1363 if (bfd_get_format (entry->the_bfd) == bfd_object)
1365 const char *ext = entry->filename + strlen (entry->filename) - 4;
1366 if (strcmp (ext, ".dll") == 0 || strcmp (ext, ".DLL") == 0)
1367 return pe_implied_import_dll (entry->filename);
1374 gld_${EMULATION_NAME}_finish ()
1376 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1377 struct bfd_link_hash_entry * h;
1379 if (thumb_entry_symbol != NULL)
1381 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true);
1383 if (h != (struct bfd_link_hash_entry *) NULL
1384 && (h->type == bfd_link_hash_defined
1385 || h->type == bfd_link_hash_defweak)
1386 && h->u.def.section->output_section != NULL)
1388 static char buffer[32];
1391 /* Special procesing is required for a Thumb entry symbol. The
1392 bottom bit of its address must be set. */
1393 val = (h->u.def.value
1394 + bfd_get_section_vma (output_bfd,
1395 h->u.def.section->output_section)
1396 + h->u.def.section->output_offset);
1400 /* Now convert this value into a string and store it in entry_symbol
1401 where the lang_finish() function will pick it up. */
1405 sprintf_vma (buffer + 2, val);
1407 if (entry_symbol != NULL && entry_from_cmdline)
1408 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1409 thumb_entry_symbol, entry_symbol);
1410 entry_symbol = buffer;
1413 einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
1415 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) */
1418 if (link_info.shared)
1420 pe_dll_fill_sections (output_bfd, &link_info);
1421 if (pe_implib_filename)
1422 pe_dll_generate_implib (pe_def_file, pe_implib_filename);
1424 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1425 /* ARM doesn't need relocs. */
1428 pe_exe_fill_sections (output_bfd, &link_info);
1432 if (pe_out_def_filename)
1433 pe_dll_generate_def_file (pe_out_def_filename);
1434 #endif /* DLL_SUPPORT */
1436 /* I don't know where .idata gets set as code, but it shouldn't be */
1438 asection *asec = bfd_get_section_by_name (output_bfd, ".idata");
1441 asec->flags &= ~SEC_CODE;
1442 asec->flags |= SEC_DATA;
1448 /* Find the last output section before given output statement.
1449 Used by place_orphan. */
1452 output_prev_sec_find (os)
1453 lang_output_section_statement_type *os;
1455 asection *s = (asection *) NULL;
1456 lang_statement_union_type *u;
1457 lang_output_section_statement_type *lookup;
1459 for (u = lang_output_section_statement.head;
1460 u != (lang_statement_union_type *) NULL;
1463 lookup = &u->output_section_statement;
1467 if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
1468 s = lookup->bfd_section;
1474 /* Place an orphan section.
1476 We use this to put sections in a reasonable place in the file, and
1477 to ensure that they are aligned as required.
1479 We handle grouped sections here as well. A section named .foo$nn
1480 goes into the output section .foo. All grouped sections are sorted
1483 Grouped sections for the default sections are handled by the
1484 default linker script using wildcards, and are sorted by
1489 lang_output_section_statement_type *os;
1491 lang_statement_union_type **stmt;
1496 gld_${EMULATION_NAME}_place_orphan (file, s)
1497 lang_input_statement_type *file;
1500 const char *secname;
1501 char *hold_section_name;
1502 char *dollar = NULL;
1503 const char *ps = NULL;
1504 lang_output_section_statement_type *os;
1505 lang_statement_list_type add_child;
1507 secname = bfd_get_section_name (s->owner, s);
1509 /* Look through the script to see where to place this section. */
1511 hold_section_name = xstrdup (secname);
1512 if (!link_info.relocateable)
1514 dollar = strchr (hold_section_name, '$');
1519 os = lang_output_section_find (hold_section_name);
1521 lang_list_init (&add_child);
1524 && (os->bfd_section == NULL
1525 || ((s->flags ^ os->bfd_section->flags)
1526 & (SEC_LOAD | SEC_ALLOC)) == 0))
1528 /* We already have an output section statement with this
1529 name, and its bfd section, if any, has compatible flags. */
1530 lang_add_section (&add_child, s, os, file);
1534 struct orphan_save *place;
1535 static struct orphan_save hold_text;
1536 static struct orphan_save hold_rdata;
1537 static struct orphan_save hold_data;
1538 static struct orphan_save hold_bss;
1540 lang_statement_list_type *old;
1541 lang_statement_list_type add;
1542 etree_type *address;
1544 /* Try to put the new output section in a reasonable place based
1545 on the section name and section flags. */
1546 #define HAVE_SECTION(hold, name) \
1547 (hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL)
1550 if ((s->flags & SEC_ALLOC) == 0)
1552 else if ((s->flags & SEC_HAS_CONTENTS) == 0
1553 && HAVE_SECTION (hold_bss, ".bss"))
1555 else if ((s->flags & SEC_READONLY) == 0
1556 && HAVE_SECTION (hold_data, ".data"))
1558 else if ((s->flags & SEC_CODE) == 0
1559 && (s->flags & SEC_READONLY) != 0
1560 && HAVE_SECTION (hold_rdata, ".rdata"))
1561 place = &hold_rdata;
1562 else if ((s->flags & SEC_READONLY) != 0
1563 && HAVE_SECTION (hold_text, ".text"))
1568 /* Choose a unique name for the section. This will be needed if
1569 the same section name appears in the input file with
1570 different loadable or allocatable characteristics. */
1571 outsecname = xstrdup (hold_section_name);
1572 if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
1578 len = strlen (outsecname);
1579 newname = xmalloc (len + 5);
1580 strcpy (newname, outsecname);
1584 sprintf (newname + len, "%d", i);
1587 while (bfd_get_section_by_name (output_bfd, newname) != NULL);
1590 outsecname = newname;
1593 /* Start building a list of statements for this section. */
1596 lang_list_init (stat_ptr);
1598 if (config.build_constructors)
1600 /* If the name of the section is representable in C, then create
1601 symbols to mark the start and the end of the section. */
1602 for (ps = outsecname; *ps != '\0'; ps++)
1603 if (! isalnum ((unsigned char) *ps) && *ps != '_')
1608 etree_type *e_align;
1610 symname = (char *) xmalloc (ps - outsecname + sizeof "___start_");
1611 sprintf (symname, "___start_%s", outsecname);
1612 e_align = exp_unop (ALIGN_K,
1613 exp_intop ((bfd_vma) 1 << s->alignment_power));
1614 lang_add_assignment (exp_assop ('=', symname, e_align));
1618 if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
1619 address = exp_intop ((bfd_vma) 0);
1622 /* All sections in an executable must be aligned to a page
1624 address = exp_unop (ALIGN_K,
1625 exp_nameop (NAME, "__section_alignment__"));
1628 os = lang_enter_output_section_statement (outsecname, address, 0,
1630 (etree_type *) NULL,
1631 (etree_type *) NULL,
1632 (etree_type *) NULL);
1634 lang_add_section (&add_child, s, os, file);
1636 lang_leave_output_section_statement
1637 ((bfd_vma) 0, "*default*",
1638 (struct lang_output_section_phdr_list *) NULL, "*default*");
1640 if (config.build_constructors && *ps == '\0')
1644 /* lang_leave_ouput_section_statement resets stat_ptr. Put
1645 stat_ptr back where we want it. */
1649 symname = (char *) xmalloc (ps - outsecname + sizeof "___stop_");
1650 sprintf (symname, "___stop_%s", outsecname);
1651 lang_add_assignment (exp_assop ('=', symname,
1652 exp_nameop (NAME, ".")));
1659 asection *snew, **pps;
1661 snew = os->bfd_section;
1663 /* Shuffle the bfd section list to make the output file look
1664 neater. This is really only cosmetic. */
1665 if (place->section == NULL)
1667 asection *bfd_section = place->os->bfd_section;
1669 /* If the output statement hasn't been used to place
1670 any input sections (and thus doesn't have an output
1671 bfd_section), look for the closest prior output statement
1672 having an output section. */
1673 if (bfd_section == NULL)
1674 bfd_section = output_prev_sec_find (place->os);
1676 if (bfd_section != NULL && bfd_section != snew)
1677 place->section = &bfd_section->next;
1680 if (place->section != NULL)
1682 /* Unlink the section. */
1683 for (pps = &output_bfd->sections;
1685 pps = &(*pps)->next)
1689 /* Now tack it on to the "place->os" section list. */
1690 snew->next = *place->section;
1691 *place->section = snew;
1694 /* Save the end of this list. Further ophans of this type will
1695 follow the one we've just added. */
1696 place->section = &snew->next;
1698 /* The following is non-cosmetic. We try to put the output
1699 statements in some sort of reasonable order here, because
1700 they determine the final load addresses of the orphan
1701 sections. In addition, placing output statements in the
1702 wrong order may require extra segments. For instance,
1703 given a typical situation of all read-only sections placed
1704 in one segment and following that a segment containing all
1705 the read-write sections, we wouldn't want to place an orphan
1706 read/write section before or amongst the read-only ones. */
1707 if (add.head != NULL)
1709 if (place->stmt == NULL)
1711 /* Put the new statement list right at the head. */
1712 *add.tail = place->os->header.next;
1713 place->os->header.next = add.head;
1717 /* Put it after the last orphan statement we added. */
1718 *add.tail = *place->stmt;
1719 *place->stmt = add.head;
1722 /* Fix the global list pointer if we happened to tack our
1723 new list at the tail. */
1724 if (*old->tail == add.head)
1725 old->tail = add.tail;
1727 /* Save the end of this list. */
1728 place->stmt = add.tail;
1734 lang_statement_union_type **pl = &os->children.head;
1738 boolean found_dollar;
1740 /* The section name has a '$'. Sort it with the other '$'
1743 found_dollar = false;
1744 for ( ; *pl != NULL; pl = &(*pl)->header.next)
1746 lang_input_section_type *ls;
1749 if ((*pl)->header.type != lang_input_section_enum)
1752 ls = &(*pl)->input_section;
1754 lname = bfd_get_section_name (ls->ifile->the_bfd, ls->section);
1755 if (strchr (lname, '$') == NULL)
1762 found_dollar = true;
1763 if (strcmp (secname, lname) < 0)
1769 if (add_child.head != NULL)
1771 add_child.head->header.next = *pl;
1772 *pl = add_child.head;
1776 free (hold_section_name);
1782 gld_${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
1783 const char * arch ATTRIBUTE_UNUSED;
1784 search_dirs_type * search;
1785 lang_input_statement_type * entry;
1787 const char * filename;
1790 if (! entry->is_archive)
1793 filename = entry->filename;
1795 string = (char *) xmalloc (strlen (search->name)
1797 + sizeof "/lib.a.dll"
1799 + (pe_dll_search_prefix ? strlen (pe_dll_search_prefix) : 0)
1803 /* Try "libfoo.dll.a" first (preferred explicit import library for dll's */
1804 sprintf (string, "%s/lib%s.dll.a", search->name, filename);
1806 if (! ldfile_try_open_bfd (string, entry))
1808 /* Try "foo.dll.a" next (alternate explicit import library for dll's */
1809 sprintf (string, "%s/%s.dll.a", search->name, filename);
1810 if (! ldfile_try_open_bfd (string, entry))
1813 Try libfoo.a next. Normally, this would be interpreted as a static
1814 library, but it *could* be an import library. For backwards compatibility,
1815 libfoo.a needs to ==precede== libfoo.dll and foo.dll in the search,
1816 or sometimes errors occur when building legacy packages.
1818 Putting libfoo.a here means that in a failure case (i.e. the library
1819 -lfoo is not found) we will search for libfoo.a twice before
1820 giving up -- once here, and once when searching for a "static" lib.
1823 /* Try "libfoo.a" (import lib, or static lib, but must
1824 take precedence over dll's) */
1825 sprintf (string, "%s/lib%s.a", search->name, filename);
1826 if (! ldfile_try_open_bfd (string, entry))
1829 if (pe_dll_search_prefix)
1831 /* Try "<prefix>foo.dll" (preferred dll name, if specified) */
1832 sprintf (string, "%s/%s%s.dll", search->name, pe_dll_search_prefix, filename);
1833 if (! ldfile_try_open_bfd (string, entry))
1835 /* Try "libfoo.dll" (default preferred dll name) */
1836 sprintf (string, "%s/lib%s.dll", search->name, filename);
1837 if (! ldfile_try_open_bfd (string, entry))
1839 /* Finally, try "foo.dll" (alternate dll name) */
1840 sprintf (string, "%s/%s.dll", search->name, filename);
1841 if (! ldfile_try_open_bfd (string, entry))
1849 else /* pe_dll_search_prefix not specified */
1852 /* Try "libfoo.dll" (preferred dll name) */
1853 sprintf (string, "%s/lib%s.dll", search->name, filename);
1854 if (! ldfile_try_open_bfd (string, entry))
1856 /* Finally, try "foo.dll" (alternate dll name) */
1857 sprintf (string, "%s/%s.dll", search->name, filename);
1858 if (! ldfile_try_open_bfd (string, entry))
1869 entry->filename = string;
1875 gld_${EMULATION_NAME}_find_potential_libraries (name, entry)
1877 lang_input_statement_type * entry;
1879 return ldfile_open_file_search (name, entry, "", ".lib");
1883 gld_${EMULATION_NAME}_get_script(isfile)
1886 # Scripts compiled in.
1887 # sed commands to quote an ld script as a C string.
1888 sc="-f stringify.sed"
1890 cat >>e${EMULATION_NAME}.c <<EOF
1894 if (link_info.relocateable == true && config.build_constructors == true)
1897 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1898 echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
1899 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1900 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1901 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1902 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1903 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1904 echo ' ; else return' >> e${EMULATION_NAME}.c
1905 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1906 echo '; }' >> e${EMULATION_NAME}.c
1908 cat >>e${EMULATION_NAME}.c <<EOF
1911 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1913 gld_${EMULATION_NAME}_before_parse,
1916 gld_${EMULATION_NAME}_after_parse,
1917 gld_${EMULATION_NAME}_after_open,
1918 after_allocation_default,
1919 set_output_arch_default,
1920 ldemul_default_target,
1921 gld_${EMULATION_NAME}_before_allocation,
1922 gld_${EMULATION_NAME}_get_script,
1923 "${EMULATION_NAME}",
1925 gld_${EMULATION_NAME}_finish, /* finish */
1926 NULL, /* create output section statements */
1927 gld_${EMULATION_NAME}_open_dynamic_archive,
1928 gld_${EMULATION_NAME}_place_orphan,
1929 gld_${EMULATION_NAME}_set_symbols,
1930 gld_${EMULATION_NAME}_parse_args,
1931 gld_${EMULATION_NAME}_unrecognized_file,
1932 gld_${EMULATION_NAME}_list_options,
1933 gld_${EMULATION_NAME}_recognized_file,
1934 gld_${EMULATION_NAME}_find_potential_libraries