1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 test -z "${ENTRY}" && ENTRY="_mainCRTStartup"
4 if [ -z "$MACHINE" ]; then
7 OUTPUT_ARCH=${ARCH}:${MACHINE}
9 rm -f e${EMULATION_NAME}.c
10 (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
12 /* Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
13 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
15 This file is part of the GNU Binutils.
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
19 the Free Software Foundation; either version 3 of the License, or
20 (at your option) any later version.
22 This program is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 GNU General Public License for more details.
27 You should have received a copy of the GNU General Public License
28 along with this program; if not, write to the Free Software
29 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
30 MA 02110-1301, USA. */
34 /* The original file generated returned different default scripts depending
35 on whether certain switches were set, but these switches pertain to the
36 Linux system and that particular version of coff. In the NT case, we
37 only determine if the subsystem is console or windows in order to select
38 the correct entry point by default. */
40 #define TARGET_IS_${EMULATION_NAME}
42 /* Do this before including bfd.h, so we prototype the right functions. */
44 #if defined(TARGET_IS_armpe) \
45 || defined(TARGET_IS_arm_epoc_pe) \
46 || defined(TARGET_IS_arm_wince_pe)
47 #define bfd_arm_allocate_interworking_sections \
48 bfd_${EMULATION_NAME}_allocate_interworking_sections
49 #define bfd_arm_get_bfd_for_interworking \
50 bfd_${EMULATION_NAME}_get_bfd_for_interworking
51 #define bfd_arm_process_before_allocation \
52 bfd_${EMULATION_NAME}_process_before_allocation
59 #include "libiberty.h"
70 #include "coff/internal.h"
72 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
73 header in generic PE code. */
74 #include "coff/i386.h"
77 /* FIXME: This is a BFD internal header file, and we should not be
79 #include "../bfd/libcoff.h"
83 #include "safe-ctype.h"
85 /* Permit the emulation parameters to override the default section
86 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
87 it seem that include/coff/internal.h should not define
88 PE_DEF_SECTION_ALIGNMENT. */
89 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
90 #undef PE_DEF_SECTION_ALIGNMENT
91 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
94 #if defined(TARGET_IS_i386pe) \
95 || defined(TARGET_IS_shpe) \
96 || defined(TARGET_IS_mipspe) \
97 || defined(TARGET_IS_armpe) \
98 || defined(TARGET_IS_arm_epoc_pe) \
99 || defined(TARGET_IS_arm_wince_pe)
103 #if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
104 #define PE_DEF_SUBSYSTEM 3
106 #undef NT_EXE_IMAGE_BASE
107 #undef PE_DEF_SECTION_ALIGNMENT
108 #undef PE_DEF_FILE_ALIGNMENT
109 #define NT_EXE_IMAGE_BASE 0x00010000
111 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
112 #define PE_DEF_SECTION_ALIGNMENT 0x00001000
113 #define PE_DEF_SUBSYSTEM 9
115 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
116 #define PE_DEF_SUBSYSTEM 2
118 #define PE_DEF_FILE_ALIGNMENT 0x00000200
121 #define U(S) ${INITIAL_SYMBOL_CHAR} S
123 static struct internal_extra_pe_aouthdr pe;
125 static flagword real_flags = 0;
126 static int support_old_code = 0;
127 static char * thumb_entry_symbol = NULL;
128 static lang_assignment_statement_type *image_base_statement = 0;
131 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
132 static char *pe_out_def_filename = NULL;
133 static char *pe_implib_filename = NULL;
134 static int pe_enable_auto_image_base = 0;
135 static char *pe_dll_search_prefix = NULL;
138 extern const char *output_filename;
141 gld_${EMULATION_NAME}_before_parse (void)
143 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
144 output_filename = "${EXECUTABLE_NAME:-a.exe}";
146 config.dynamic_link = TRUE;
147 config.has_shared = 1;
150 # Cygwin no longer wants these noisy warnings. Other PE
151 # targets might like to consider adding themselves here.
154 default_auto_import=1
157 default_auto_import=-1
162 link_info.pei386_auto_import = ${default_auto_import};
163 link_info.pei386_runtime_pseudo_reloc = 1; /* Use by default version 1. */
165 #if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
166 #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe || defined TARGET_IS_arm_wince_pe
167 lang_default_entry ("WinMainCRTStartup");
169 lang_default_entry ("_WinMainCRTStartup");
172 lang_default_entry ("${ENTRY}");
177 /* PE format extra command line options. */
179 /* Used for setting flags in the PE header. */
180 #define OPTION_BASE_FILE (300 + 1)
181 #define OPTION_DLL (OPTION_BASE_FILE + 1)
182 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
183 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
184 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
185 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
186 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
187 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
188 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
189 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
190 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
191 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
192 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
193 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
194 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
195 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
196 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
197 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
198 #define OPTION_KILL_ATS (OPTION_EXCLUDE_SYMBOLS + 1)
199 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
200 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
201 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
202 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
203 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
204 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
205 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
206 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
207 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
208 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
209 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
210 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
211 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
212 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
213 #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
214 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
215 (OPTION_EXCLUDE_LIBS + 1)
216 #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
217 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
218 #define OPTION_LARGE_ADDRESS_AWARE \
219 (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
220 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
221 (OPTION_LARGE_ADDRESS_AWARE + 1)
222 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
223 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
224 #define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
225 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
226 #define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
227 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
228 #define OPTION_ENABLE_LONG_SECTION_NAMES \
229 (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
230 #define OPTION_DISABLE_LONG_SECTION_NAMES \
231 (OPTION_ENABLE_LONG_SECTION_NAMES + 1)
234 gld${EMULATION_NAME}_add_options
235 (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl,
236 struct option **longopts, int nrl ATTRIBUTE_UNUSED,
237 struct option **really_longopts ATTRIBUTE_UNUSED)
239 static const struct option xtra_long[] = {
241 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
242 {"dll", no_argument, NULL, OPTION_DLL},
243 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
244 {"heap", required_argument, NULL, OPTION_HEAP},
245 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
246 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
247 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
248 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
249 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
250 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
251 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
252 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
253 {"stack", required_argument, NULL, OPTION_STACK},
254 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
255 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
256 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
257 {"use-nul-prefixed-import-tables", no_argument, NULL,
258 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
260 /* getopt allows abbreviations, so we do this to stop it from treating -o
261 as an abbreviation for this option */
262 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
263 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
264 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
265 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
266 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
267 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
268 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
269 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
270 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
271 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
272 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
273 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
274 /* getopt() allows abbreviations, so we do this to stop it from
275 treating -c as an abbreviation for these --compat-implib. */
276 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
277 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
278 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
279 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
280 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
281 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
282 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
283 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
284 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
285 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
286 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
287 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
288 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
290 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
291 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
292 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
293 {NULL, no_argument, NULL, 0}
296 *longopts = (struct option *)
297 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
298 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
301 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
302 parameters which may be input from the command line. */
313 #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
315 static definfo init[] =
317 /* imagebase must be first */
318 #define IMAGEBASEOFF 0
319 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
321 {&dll, sizeof(dll), 0, "__dll__", 0},
322 #define MSIMAGEBASEOFF 2
323 D(ImageBase, U ("__ImageBase"), NT_EXE_IMAGE_BASE),
324 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
325 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
326 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
327 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
328 D(MajorImageVersion,"__major_image_version__", 1),
329 D(MinorImageVersion,"__minor_image_version__", 0),
330 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
331 D(MajorSubsystemVersion,"__major_subsystem_version__", 3),
333 D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
335 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
336 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
337 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
338 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
339 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
340 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
341 D(LoaderFlags,"__loader_flags__", 0x0),
342 { NULL, 0, 0, NULL, 0 }
347 gld_${EMULATION_NAME}_list_options (FILE *file)
349 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
350 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
351 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
352 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
353 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
354 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
355 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
356 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
357 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
358 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
359 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
360 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
361 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
362 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
363 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
364 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
366 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
367 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
368 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
369 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
370 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
371 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
372 fprintf (file, _(" Exclude objects, archive members from auto\n"));
373 fprintf (file, _(" export, place into import library instead.\n"));
374 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
375 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
376 fprintf (file, _(" --out-implib <file> Generate import library\n"));
377 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
378 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
379 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
380 create __imp_<SYMBOL> as well.\n"));
381 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
382 unless user specifies one\n"));
383 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
384 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
385 an importlib, use <string><basename>.dll\n\
386 in preference to lib<basename>.dll \n"));
387 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\
388 __imp_sym for DATA references\n"));
389 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
390 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
391 adding pseudo-relocations resolved at\n\
393 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
394 auto-imported DATA.\n"));
395 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
396 or linking to DLLs (esp. auto-import)\n"));
398 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
399 greater than 2 gigabytes\n"));
400 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
401 executable image files\n"));
402 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
403 in object files\n"));
408 set_pe_name (char *name, long val)
412 /* Find the name and set it. */
413 for (i = 0; init[i].ptr; i++)
415 if (strcmp (name, init[i].symbol) == 0)
419 if (strcmp (name,"__image_base__") == 0)
420 set_pe_name (U ("__ImageBase"), val);
429 set_pe_subsystem (void)
433 const char *initial_symbol_char;
438 unsigned long temp_subsystem;
447 { "native", 1, "NtProcessStartup" },
448 { "windows", 2, "WinMainCRTStartup" },
449 { "console", 3, "mainCRTStartup" },
450 { "posix", 7, "__PosixProcessStartup"},
451 { "wince", 9, "WinMainCRTStartup" },
452 { "xbox", 14, "mainCRTStartup" },
455 /* Entry point name for arbitrary subsystem numbers. */
456 static const char default_entry[] = "mainCRTStartup";
458 /* Check for the presence of a version number. */
459 sver = strchr (optarg, ':');
461 len = strlen (optarg);
465 set_pe_name ("__major_subsystem_version__",
466 strtoul (sver + 1, &end, 0));
468 set_pe_name ("__minor_subsystem_version__",
469 strtoul (end + 1, &end, 0));
471 einfo (_("%P: warning: bad version number in -subsystem option\n"));
474 /* Check for numeric subsystem. */
475 temp_subsystem = strtoul (optarg, & end, 0);
476 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
478 /* Search list for a numeric match to use its entry point. */
479 for (i = 0; v[i].name; i++)
480 if (v[i].value == (int) temp_subsystem)
483 /* If no match, use the default. */
484 if (v[i].name != NULL)
487 entry = default_entry;
489 /* Use this subsystem. */
490 subsystem = (int) temp_subsystem;
494 /* Search for subsystem by name. */
495 for (i = 0; v[i].name; i++)
496 if (strncmp (optarg, v[i].name, len) == 0
497 && v[i].name[len] == '\0')
500 if (v[i].name == NULL)
502 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
507 subsystem = v[i].value;
510 set_pe_name ("__subsystem__", subsystem);
512 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
513 if (*initial_symbol_char != '\0')
517 /* lang_default_entry expects its argument to be permanently
518 allocated, so we don't free this string. */
519 alc_entry = xmalloc (strlen (initial_symbol_char)
522 strcpy (alc_entry, initial_symbol_char);
523 strcat (alc_entry, entry);
527 lang_default_entry (entry);
534 set_pe_value (char *name)
538 set_pe_name (name, strtoul (optarg, &end, 0));
541 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
548 set_pe_stack_heap (char *resname, char *comname)
550 set_pe_value (resname);
555 set_pe_value (comname);
558 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
563 gld${EMULATION_NAME}_handle_option (int optc)
570 case OPTION_BASE_FILE:
571 link_info.base_file = fopen (optarg, FOPEN_WB);
572 if (link_info.base_file == NULL)
574 /* xgettext:c-format */
575 fprintf (stderr, _("%s: Can't open base file %s\n"),
576 program_name, optarg);
583 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
586 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
588 case OPTION_SUBSYSTEM:
591 case OPTION_MAJOR_OS_VERSION:
592 set_pe_value ("__major_os_version__");
594 case OPTION_MINOR_OS_VERSION:
595 set_pe_value ("__minor_os_version__");
597 case OPTION_MAJOR_SUBSYSTEM_VERSION:
598 set_pe_value ("__major_subsystem_version__");
600 case OPTION_MINOR_SUBSYSTEM_VERSION:
601 set_pe_value ("__minor_subsystem_version__");
603 case OPTION_MAJOR_IMAGE_VERSION:
604 set_pe_value ("__major_image_version__");
606 case OPTION_MINOR_IMAGE_VERSION:
607 set_pe_value ("__minor_image_version__");
609 case OPTION_FILE_ALIGNMENT:
610 set_pe_value ("__file_alignment__");
612 case OPTION_SECTION_ALIGNMENT:
613 set_pe_value ("__section_alignment__");
616 set_pe_name ("__dll__", 1);
618 case OPTION_IMAGE_BASE:
619 set_pe_value ("__image_base__");
621 case OPTION_SUPPORT_OLD_CODE:
622 support_old_code = 1;
624 case OPTION_THUMB_ENTRY:
625 thumb_entry_symbol = optarg;
627 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
628 pe_use_nul_prefixed_import_tables = TRUE;
632 pe_out_def_filename = xstrdup (optarg);
634 case OPTION_EXPORT_ALL:
635 pe_dll_export_everything = 1;
637 case OPTION_EXCLUDE_SYMBOLS:
638 pe_dll_add_excludes (optarg, EXCLUDESYMS);
640 case OPTION_EXCLUDE_LIBS:
641 pe_dll_add_excludes (optarg, EXCLUDELIBS);
643 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
644 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
646 case OPTION_KILL_ATS:
649 case OPTION_STDCALL_ALIASES:
650 pe_dll_stdcall_aliases = 1;
652 case OPTION_ENABLE_STDCALL_FIXUP:
653 pe_enable_stdcall_fixup = 1;
655 case OPTION_DISABLE_STDCALL_FIXUP:
656 pe_enable_stdcall_fixup = 0;
658 case OPTION_IMPLIB_FILENAME:
659 pe_implib_filename = xstrdup (optarg);
661 case OPTION_WARN_DUPLICATE_EXPORTS:
662 pe_dll_warn_dup_exports = 1;
664 case OPTION_IMP_COMPAT:
665 pe_dll_compat_implib = 1;
667 case OPTION_ENABLE_AUTO_IMAGE_BASE:
668 pe_enable_auto_image_base = 1;
670 case OPTION_DISABLE_AUTO_IMAGE_BASE:
671 pe_enable_auto_image_base = 0;
673 case OPTION_DLL_SEARCH_PREFIX:
674 pe_dll_search_prefix = xstrdup (optarg);
676 case OPTION_NO_DEFAULT_EXCLUDES:
677 pe_dll_do_default_excludes = 0;
679 case OPTION_DLL_ENABLE_AUTO_IMPORT:
680 link_info.pei386_auto_import = 1;
682 case OPTION_DLL_DISABLE_AUTO_IMPORT:
683 link_info.pei386_auto_import = 0;
685 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
686 link_info.pei386_runtime_pseudo_reloc = 1;
688 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
689 link_info.pei386_runtime_pseudo_reloc = 1;
691 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
692 link_info.pei386_runtime_pseudo_reloc = 2;
694 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
695 link_info.pei386_runtime_pseudo_reloc = 0;
697 case OPTION_ENABLE_EXTRA_PE_DEBUG:
698 pe_dll_extra_pe_debug = 1;
701 case OPTION_LARGE_ADDRESS_AWARE:
702 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
704 case OPTION_ENABLE_LONG_SECTION_NAMES:
705 pe_use_coff_long_section_names = 1;
707 case OPTION_DISABLE_LONG_SECTION_NAMES:
708 pe_use_coff_long_section_names = 0;
717 strhash (const char *str)
719 const unsigned char *s;
726 s = (const unsigned char *) str;
727 while ((c = *s++) != '\0')
729 hash += c + (c << 17);
733 hash += len + (len << 17);
739 /* Use the output file to create a image base for relocatable DLLs. */
742 compute_dll_image_base (const char *ofile)
744 unsigned long hash = strhash (ofile);
745 return 0x61300000 + ((hash << 16) & 0x0FFC0000);
749 /* Assign values to the special symbols before the linker script is
753 gld_${EMULATION_NAME}_set_symbols (void)
755 /* Run through and invent symbols for all the
756 names and insert the defaults. */
759 if (!init[IMAGEBASEOFF].inited)
761 if (link_info.relocatable)
762 init[IMAGEBASEOFF].value = 0;
763 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
765 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base) ?
766 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
768 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
771 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
772 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
775 /* Don't do any symbol assignments if this is a relocatable link. */
776 if (link_info.relocatable)
779 /* Glue the assignments into the abs section. */
780 push_stat_ptr (&abs_output_section->children);
782 for (j = 0; init[j].ptr; j++)
784 long val = init[j].value;
785 lang_assignment_statement_type *rv;
786 rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
788 if (init[j].size == sizeof (short))
789 *(short *) init[j].ptr = val;
790 else if (init[j].size == sizeof (int))
791 *(int *) init[j].ptr = val;
792 else if (init[j].size == sizeof (long))
793 *(long *) init[j].ptr = val;
794 /* This might be a long long or other special type. */
795 else if (init[j].size == sizeof (bfd_vma))
796 *(bfd_vma *) init[j].ptr = val;
798 if (j == IMAGEBASEOFF)
799 image_base_statement = rv;
801 /* Restore the pointer. */
804 if (pe.FileAlignment >
807 einfo (_("%P: warning, file alignment > section alignment.\n"));
811 /* This is called after the linker script and the command line options
815 gld_${EMULATION_NAME}_after_parse (void)
817 /* The Windows libraries are designed for the linker to treat the
818 entry point as an undefined symbol. Otherwise, the .obj that
819 defines mainCRTStartup is brought in because it is the first
820 encountered in libc.lib and it has other symbols in it which will
821 be pulled in by the link process. To avoid this, we act as
822 though the user specified -u with the entry point symbol.
824 This function is called after the linker script and command line
825 options have been read, so at this point we know the right entry
826 point. This function is called before the input files are
827 opened, so registering the symbol as undefined will make a
830 if (! link_info.relocatable && entry_symbol.name != NULL)
831 ldlang_add_undef (entry_symbol.name);
834 /* pe-dll.c directly accesses pe_data_import_dll,
835 so it must be defined outside of #ifdef DLL_SUPPORT.
836 Note - this variable is deliberately not initialised.
837 This allows it to be treated as a common varaible, and only
838 exist in one incarnation in a multiple target enabled linker. */
839 char * pe_data_import_dll;
842 static struct bfd_link_hash_entry *pe_undef_found_sym;
845 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
850 sl = strlen (string);
851 if (h->type == bfd_link_hash_defined
852 && strncmp (h->root.string, string, sl) == 0
853 && h->root.string[sl] == '@')
855 pe_undef_found_sym = h;
862 pe_fixup_stdcalls (void)
864 static int gave_warning_message = 0;
865 struct bfd_link_hash_entry *undef, *sym;
867 if (pe_dll_extra_pe_debug)
868 printf ("%s\n", __FUNCTION__);
870 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
871 if (undef->type == bfd_link_hash_undefined)
873 char* at = strchr (undef->root.string, '@');
874 int lead_at = (*undef->root.string == '@');
875 /* For now, don't try to fixup fastcall symbols. */
879 /* The symbol is a stdcall symbol, so let's look for a
880 cdecl symbol with the same name and resolve to that. */
881 char *cname = xstrdup (undef->root.string /* + lead_at */);
882 at = strchr (cname, '@');
884 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
886 if (sym && sym->type == bfd_link_hash_defined)
888 undef->type = bfd_link_hash_defined;
889 undef->u.def.value = sym->u.def.value;
890 undef->u.def.section = sym->u.def.section;
892 if (pe_enable_stdcall_fixup == -1)
894 einfo (_("Warning: resolving %s by linking to %s\n"),
895 undef->root.string, cname);
896 if (! gave_warning_message)
898 gave_warning_message = 1;
899 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
900 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
907 /* The symbol is a cdecl symbol, so we look for stdcall
908 symbols - which means scanning the whole symbol table. */
909 pe_undef_found_sym = 0;
910 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
911 (char *) undef->root.string);
912 sym = pe_undef_found_sym;
915 undef->type = bfd_link_hash_defined;
916 undef->u.def.value = sym->u.def.value;
917 undef->u.def.section = sym->u.def.section;
919 if (pe_enable_stdcall_fixup == -1)
921 einfo (_("Warning: resolving %s by linking to %s\n"),
922 undef->root.string, sym->root.string);
923 if (! gave_warning_message)
925 gave_warning_message = 1;
926 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
927 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
936 make_import_fixup (arelent *rel, asection *s)
938 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
941 if (pe_dll_extra_pe_debug)
942 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
943 (unsigned long) rel->address, (long) rel->addend);
945 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
946 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
947 s->owner, s, rel->address);
949 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
955 pe_find_data_imports (void)
957 struct bfd_link_hash_entry *undef, *sym;
959 if (link_info.pei386_auto_import == 0)
962 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
964 if (undef->type == bfd_link_hash_undefined)
966 /* C++ symbols are *long*. */
969 if (pe_dll_extra_pe_debug)
970 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
972 sprintf (buf, "__imp_%s", undef->root.string);
974 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
976 if (sym && sym->type == bfd_link_hash_defined)
978 bfd *b = sym->u.def.section->owner;
982 if (link_info.pei386_auto_import == -1)
984 static bfd_boolean warned = FALSE;
986 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
987 undef->root.string, buf);
989 /* PR linker/4844. */
993 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
994 This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
998 if (!bfd_generic_link_read_symbols (b))
1000 einfo (_("%B%F: could not read symbols: %E\n"), b);
1004 symbols = bfd_get_outsymbols (b);
1005 nsyms = bfd_get_symcount (b);
1007 for (i = 0; i < nsyms; i++)
1009 if (! CONST_STRNEQ (symbols[i]->name, U ("_head_")))
1012 if (pe_dll_extra_pe_debug)
1013 printf ("->%s\n", symbols[i]->name);
1015 pe_data_import_dll = (char*) (symbols[i]->name +
1016 sizeof (U ("_head_")) - 1);
1020 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
1023 /* Let's differentiate it somehow from defined. */
1024 undef->type = bfd_link_hash_defweak;
1025 /* We replace original name with __imp_ prefixed, this
1026 1) may trash memory 2) leads to duplicate symbol generation.
1027 Still, IMHO it's better than having name poluted. */
1028 undef->root.string = sym->root.string;
1029 undef->u.def.value = sym->u.def.value;
1030 undef->u.def.section = sym->u.def.section;
1037 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1039 if (pe_dll_extra_pe_debug)
1040 printf ("+%s\n", h->string);
1044 #endif /* DLL_SUPPORT */
1047 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1049 int *found = (int *) obj;
1050 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1055 gld_${EMULATION_NAME}_after_open (void)
1058 if (pe_dll_extra_pe_debug)
1061 struct bfd_link_hash_entry *sym;
1063 printf ("%s()\n", __FUNCTION__);
1065 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1066 printf ("-%s\n", sym->root.string);
1067 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1069 for (a = link_info.input_bfds; a; a = a->link_next)
1070 printf ("*%s\n",a->filename);
1074 /* Pass the wacky PE command line options into the output bfd.
1075 FIXME: This should be done via a function, rather than by
1076 including an internal BFD header. */
1078 if (coff_data (link_info.output_bfd) == NULL
1079 || coff_data (link_info.output_bfd)->pe == 0)
1080 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1081 link_info.output_bfd);
1083 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1084 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1085 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1087 /* At this point we must decide whether to use long section names
1088 in the output or not. If the user hasn't explicitly specified
1089 on the command line, we leave it to the default for the format
1090 (object files yes, image files no), except if there is debug
1091 information present; GDB relies on the long section names to
1092 find it, so enable it in that case. */
1093 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1095 /* Iterate over all sections of all input BFDs, checking
1096 for any that begin 'debug_' and are long names. */
1097 LANG_FOR_EACH_INPUT_STATEMENT (is)
1099 int found_debug = 0;
1100 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1103 pe_use_coff_long_section_names = 1;
1109 pe_output_file_set_long_section_names (link_info.output_bfd);
1112 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1113 pe_fixup_stdcalls ();
1115 pe_process_import_defs (link_info.output_bfd, &link_info);
1117 pe_find_data_imports ();
1119 #if defined (TARGET_IS_i386pe) \
1120 || defined (TARGET_IS_armpe) \
1121 || defined (TARGET_IS_arm_epoc_pe) \
1122 || defined (TARGET_IS_arm_wince_pe)
1123 if (!link_info.relocatable)
1124 pe_dll_build_sections (link_info.output_bfd, &link_info);
1126 if (link_info.shared)
1127 pe_dll_build_sections (link_info.output_bfd, &link_info);
1129 pe_exe_build_sections (link_info.output_bfd, &link_info);
1131 #endif /* DLL_SUPPORT */
1133 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1134 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1136 /* The arm backend needs special fields in the output hash structure.
1137 These will only be created if the output format is an arm format,
1138 hence we do not support linking and changing output formats at the
1139 same time. Use a link followed by objcopy to change output formats. */
1140 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1144 /* Find a BFD that can hold the interworking stubs. */
1145 LANG_FOR_EACH_INPUT_STATEMENT (is)
1147 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1154 /* This next chunk of code tries to detect the case where you have
1155 two import libraries for the same DLL (specifically,
1156 symbolically linking libm.a and libc.a in cygwin to
1157 libcygwin.a). In those cases, it's possible for function
1158 thunks from the second implib to be used but without the
1159 head/tail objects, causing an improper import table. We detect
1160 those cases and rename the "other" import libraries to match
1161 the one the head/tail come from, so that the linker will sort
1162 things nicely and produce a valid import table. */
1164 LANG_FOR_EACH_INPUT_STATEMENT (is)
1166 if (is->the_bfd->my_archive)
1168 int idata2 = 0, reloc_count=0, is_imp = 0;
1171 /* See if this is an import library thunk. */
1172 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1174 if (strcmp (sec->name, ".idata\$2") == 0)
1176 if (CONST_STRNEQ (sec->name, ".idata\$"))
1178 reloc_count += sec->reloc_count;
1181 if (is_imp && !idata2 && reloc_count)
1183 /* It is, look for the reference to head and see if it's
1184 from our own library. */
1185 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1193 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1197 if (!bfd_generic_link_read_symbols (is->the_bfd))
1199 einfo (_("%B%F: could not read symbols: %E\n"),
1203 symbols = bfd_get_outsymbols (is->the_bfd);
1205 relocs = (arelent **) xmalloc ((size_t) relsize);
1206 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1211 einfo ("%X%P: unable to process relocs: %E\n");
1215 for (i = 0; i < nrelocs; i++)
1217 struct bfd_symbol *s;
1218 struct bfd_link_hash_entry * blhe;
1219 char *other_bfd_filename;
1222 s = (relocs[i]->sym_ptr_ptr)[0];
1224 if (s->flags & BSF_LOCAL)
1227 /* Thunk section with reloc to another bfd. */
1228 blhe = bfd_link_hash_lookup (link_info.hash,
1230 FALSE, FALSE, TRUE);
1233 || blhe->type != bfd_link_hash_defined)
1237 = blhe->u.def.section->owner->my_archive
1238 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1239 : bfd_get_filename (blhe->u.def.section->owner);
1241 if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
1242 other_bfd_filename) == 0)
1245 /* Rename this implib to match the other one. */
1246 n = xmalloc (strlen (other_bfd_filename) + 1);
1247 strcpy (n, other_bfd_filename);
1248 is->the_bfd->my_archive->filename = n;
1252 /* Note - we do not free the symbols,
1253 they are now cached in the BFD. */
1263 lang_input_statement_type *is2;
1264 lang_input_statement_type *is3;
1266 /* Careful - this is a shell script. Watch those dollar signs! */
1267 /* Microsoft import libraries have every member named the same,
1268 and not in the right order for us to link them correctly. We
1269 must detect these and rename the members so that they'll link
1270 correctly. There are three types of objects: the head, the
1271 thunks, and the sentinel(s). The head is easy; it's the one
1272 with idata2. We assume that the sentinels won't have relocs,
1273 and the thunks will. It's easier than checking the symbol
1274 table for external references. */
1275 LANG_FOR_EACH_INPUT_STATEMENT (is)
1277 if (is->the_bfd->my_archive)
1280 bfd *arch = is->the_bfd->my_archive;
1282 if (cur_arch != arch)
1288 is3 && is3->the_bfd->my_archive == arch;
1289 is3 = (lang_input_statement_type *) is3->next)
1291 /* A MS dynamic import library can also contain static
1292 members, so look for the first element with a .dll
1293 extension, and use that for the remainder of the
1295 pnt = strrchr (is3->the_bfd->filename, '.');
1296 if (pnt != NULL && strcmp (pnt, ".dll") == 0)
1304 /* OK, found one. Now look to see if the remaining
1305 (dynamic import) members use the same name. */
1307 is2 && is2->the_bfd->my_archive == arch;
1308 is2 = (lang_input_statement_type *) is2->next)
1310 /* Skip static members, ie anything with a .obj
1312 pnt = strrchr (is2->the_bfd->filename, '.');
1313 if (pnt != NULL && strcmp (pnt, ".obj") == 0)
1316 if (strcmp (is3->the_bfd->filename,
1317 is2->the_bfd->filename))
1326 /* This fragment might have come from an .obj file in a Microsoft
1327 import, and not an actual import record. If this is the case,
1328 then leave the filename alone. */
1329 pnt = strrchr (is->the_bfd->filename, '.');
1331 if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
1333 int idata2 = 0, reloc_count=0;
1335 char *new_name, seq;
1337 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1339 if (strcmp (sec->name, ".idata\$2") == 0)
1341 reloc_count += sec->reloc_count;
1344 if (idata2) /* .idata2 is the TOC */
1346 else if (reloc_count > 0) /* thunks */
1351 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1352 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1353 is->the_bfd->filename = new_name;
1355 new_name = xmalloc (strlen (is->filename) + 3);
1356 sprintf (new_name, "%s.%c", is->filename, seq);
1357 is->filename = new_name;
1364 /* The following chunk of code tries to identify jump stubs in
1365 import libraries which are dead code and eliminates them
1366 from the final link. For each exported symbol <sym>, there
1367 is a object file in the import library with a .text section
1368 and several .idata\$* sections. The .text section contains the
1369 symbol definition for <sym> which is a jump stub of the form
1370 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1371 for __imp_<sym> which is the address of the slot for <sym> in
1372 the import address table. When a symbol is imported explicitly
1373 using __declspec(dllimport) declaration, the compiler generates
1374 a reference to __imp_<sym> which directly resolves to the
1375 symbol in .idata\$5, in which case the jump stub code is not
1376 needed. The following code tries to identify jump stub sections
1377 in import libraries which are not referred to by anyone and
1378 marks them for exclusion from the final link. */
1379 LANG_FOR_EACH_INPUT_STATEMENT (is)
1381 if (is->the_bfd->my_archive)
1384 asection *sec, *stub_sec = NULL;
1386 /* See if this is an import library thunk. */
1387 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1389 if (strncmp (sec->name, ".idata\$", 7) == 0)
1391 /* The section containing the jmp stub has code
1393 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1397 if (is_imp && stub_sec)
1400 long nsyms, src_count;
1401 struct bfd_link_hash_entry * blhe;
1403 if (!bfd_generic_link_read_symbols (is->the_bfd))
1405 einfo (_("%B%F: could not read symbols: %E\n"),
1409 symbols = bfd_get_outsymbols (is->the_bfd);
1410 nsyms = bfd_get_symcount (is->the_bfd);
1412 for (src_count = 0; src_count < nsyms; src_count++)
1414 if (symbols[src_count]->section->id == stub_sec->id)
1416 /* This symbol belongs to the section containing
1418 blhe = bfd_link_hash_lookup (link_info.hash,
1419 symbols[src_count]->name,
1420 FALSE, FALSE, TRUE);
1421 /* If the symbol in the stub section has no other
1422 undefined references, exclude the stub section
1423 from the final link. */
1424 if (blhe && (blhe->type == bfd_link_hash_defined)
1425 && (blhe->u.undef.next == NULL))
1426 stub_sec->flags |= SEC_EXCLUDE;
1436 gld_${EMULATION_NAME}_before_allocation (void)
1438 #ifdef TARGET_IS_ppcpe
1439 /* Here we rummage through the found bfds to collect toc information. */
1441 LANG_FOR_EACH_INPUT_STATEMENT (is)
1443 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1445 /* xgettext:c-format */
1446 einfo (_("Errors encountered processing file %s\n"), is->filename);
1451 /* We have seen it all. Allocate it, and carry on. */
1452 ppc_allocate_toc_section (&link_info);
1453 #endif /* TARGET_IS_ppcpe */
1455 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1456 /* FIXME: we should be able to set the size of the interworking stub
1459 Here we rummage through the found bfds to collect glue
1460 information. FIXME: should this be based on a command line
1461 option? krk@cygnus.com. */
1463 LANG_FOR_EACH_INPUT_STATEMENT (is)
1465 if (! bfd_arm_process_before_allocation
1466 (is->the_bfd, & link_info, support_old_code))
1468 /* xgettext:c-format */
1469 einfo (_("Errors encountered processing file %s for interworking\n"),
1475 /* We have seen it all. Allocate it, and carry on. */
1476 bfd_arm_allocate_interworking_sections (& link_info);
1477 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1479 before_allocation_default ();
1483 /* This is called when an input file isn't recognized as a BFD. We
1484 check here for .DEF files and pull them in automatically. */
1487 saw_option (char *option)
1491 for (i = 0; init[i].ptr; i++)
1492 if (strcmp (init[i].symbol, option) == 0)
1493 return init[i].inited;
1496 #endif /* DLL_SUPPORT */
1499 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1502 const char *ext = entry->filename + strlen (entry->filename) - 4;
1504 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1506 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1510 int i, buflen=0, len;
1513 for (i = 0; i < pe_def_file->num_exports; i++)
1515 len = strlen (pe_def_file->exports[i].internal_name);
1516 if (buflen < len + 2)
1520 buf = (char *) xmalloc (buflen);
1522 for (i = 0; i < pe_def_file->num_exports; i++)
1524 struct bfd_link_hash_entry *h;
1526 sprintf (buf, "%s%s", U (""), pe_def_file->exports[i].internal_name);
1528 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1529 if (h == (struct bfd_link_hash_entry *) NULL)
1530 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1531 if (h->type == bfd_link_hash_new)
1533 h->type = bfd_link_hash_undefined;
1534 h->u.undef.abfd = NULL;
1535 bfd_link_add_undef (link_info.hash, h);
1540 /* def_file_print (stdout, pe_def_file); */
1541 if (pe_def_file->is_dll == 1)
1542 link_info.shared = 1;
1544 if (pe_def_file->base_address != (bfd_vma)(-1))
1547 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1548 = init[IMAGEBASEOFF].value
1549 = pe_def_file->base_address;
1550 init[IMAGEBASEOFF].inited = 1;
1551 if (image_base_statement)
1552 image_base_statement->exp = exp_assop ('=', "__image_base__",
1553 exp_intop (pe.ImageBase));
1556 if (pe_def_file->stack_reserve != -1
1557 && ! saw_option ("__size_of_stack_reserve__"))
1559 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1560 if (pe_def_file->stack_commit != -1)
1561 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1563 if (pe_def_file->heap_reserve != -1
1564 && ! saw_option ("__size_of_heap_reserve__"))
1566 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1567 if (pe_def_file->heap_commit != -1)
1568 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1578 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1581 #ifdef TARGET_IS_i386pe
1582 pe_dll_id_target ("pei-i386");
1584 #ifdef TARGET_IS_shpe
1585 pe_dll_id_target ("pei-shl");
1587 #ifdef TARGET_IS_mipspe
1588 pe_dll_id_target ("pei-mips");
1590 #ifdef TARGET_IS_armpe
1591 pe_dll_id_target ("pei-arm-little");
1593 #ifdef TARGET_IS_arm_epoc_pe
1594 pe_dll_id_target ("epoc-pei-arm-little");
1596 #ifdef TARGET_IS_arm_wince_pe
1597 pe_dll_id_target ("pei-arm-wince-little");
1599 if (pe_bfd_is_dll (entry->the_bfd))
1600 return pe_implied_import_dll (entry->filename);
1606 gld_${EMULATION_NAME}_finish (void)
1608 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1609 struct bfd_link_hash_entry * h;
1611 if (thumb_entry_symbol != NULL)
1613 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1614 FALSE, FALSE, TRUE);
1616 if (h != (struct bfd_link_hash_entry *) NULL
1617 && (h->type == bfd_link_hash_defined
1618 || h->type == bfd_link_hash_defweak)
1619 && h->u.def.section->output_section != NULL)
1621 static char buffer[32];
1624 /* Special procesing is required for a Thumb entry symbol. The
1625 bottom bit of its address must be set. */
1626 val = (h->u.def.value
1627 + bfd_get_section_vma (link_info.output_bfd,
1628 h->u.def.section->output_section)
1629 + h->u.def.section->output_offset);
1633 /* Now convert this value into a string and store it in entry_symbol
1634 where the lang_finish() function will pick it up. */
1638 sprintf_vma (buffer + 2, val);
1640 if (entry_symbol.name != NULL && entry_from_cmdline)
1641 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1642 thumb_entry_symbol, entry_symbol.name);
1643 entry_symbol.name = buffer;
1646 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
1648 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
1653 if (link_info.shared
1654 #if !defined(TARGET_IS_shpe) && !defined(TARGET_IS_mipspe)
1655 || (!link_info.relocatable && pe_def_file->num_exports != 0)
1659 pe_dll_fill_sections (link_info.output_bfd, &link_info);
1660 if (pe_implib_filename)
1661 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info);
1663 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1664 /* ARM doesn't need relocs. */
1667 pe_exe_fill_sections (link_info.output_bfd, &link_info);
1671 if (pe_out_def_filename)
1672 pe_dll_generate_def_file (pe_out_def_filename);
1673 #endif /* DLL_SUPPORT */
1675 /* I don't know where .idata gets set as code, but it shouldn't be. */
1677 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1681 asec->flags &= ~SEC_CODE;
1682 asec->flags |= SEC_DATA;
1688 /* Place an orphan section.
1690 We use this to put sections in a reasonable place in the file, and
1691 to ensure that they are aligned as required.
1693 We handle grouped sections here as well. A section named .foo\$nn
1694 goes into the output section .foo. All grouped sections are sorted
1697 Grouped sections for the default sections are handled by the
1698 default linker script using wildcards, and are sorted by
1701 static lang_output_section_statement_type *
1702 gld_${EMULATION_NAME}_place_orphan (asection *s,
1703 const char *secname,
1706 const char *orig_secname = secname;
1707 char *dollar = NULL;
1708 lang_output_section_statement_type *os;
1709 lang_statement_list_type add_child;
1711 /* Look through the script to see where to place this section. */
1712 if (!link_info.relocatable
1713 && (dollar = strchr (secname, '\$')) != NULL)
1715 size_t len = dollar - secname;
1716 char *newname = xmalloc (len + 1);
1717 memcpy (newname, secname, len);
1718 newname[len] = '\0';
1722 lang_list_init (&add_child);
1725 && (os = lang_output_section_find (secname)) != NULL
1726 && os->bfd_section != NULL
1727 && (os->bfd_section->flags == 0
1728 || ((s->flags ^ os->bfd_section->flags)
1729 & (SEC_LOAD | SEC_ALLOC)) == 0))
1731 /* We already have an output section statement with this
1732 name, and its bfd section has compatible flags.
1733 If the section already exists but does not have any flags set,
1734 then it has been created by the linker, probably as a result of
1735 a --section-start command line switch. */
1736 lang_add_section (&add_child, s, os);
1740 static struct orphan_save hold[] =
1743 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1746 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1749 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1755 enum orphan_save_index
1762 static int orphan_init_done = 0;
1763 struct orphan_save *place;
1764 lang_output_section_statement_type *after;
1765 etree_type *address;
1767 if (!orphan_init_done)
1769 struct orphan_save *ho;
1770 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1771 if (ho->name != NULL)
1773 ho->os = lang_output_section_find (ho->name);
1774 if (ho->os != NULL && ho->os->flags == 0)
1775 ho->os->flags = ho->flags;
1777 orphan_init_done = 1;
1780 /* Try to put the new output section in a reasonable place based
1781 on the section name and section flags. */
1784 if ((s->flags & SEC_ALLOC) == 0)
1786 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1787 place = &hold[orphan_bss];
1788 else if ((s->flags & SEC_READONLY) == 0)
1789 place = &hold[orphan_data];
1790 else if ((s->flags & SEC_CODE) == 0)
1791 place = &hold[orphan_rodata];
1793 place = &hold[orphan_text];
1798 if (place->os == NULL)
1799 place->os = lang_output_section_find (place->name);
1802 after = lang_output_section_find_by_flags (s, &place->os, NULL);
1804 /* *ABS* is always the first output section statement. */
1805 after = (&lang_output_section_statement.head
1806 ->output_section_statement);
1809 /* All sections in an executable must be aligned to a page boundary. */
1810 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
1811 os = lang_insert_orphan (s, secname, constraint, after, place, address,
1816 lang_statement_union_type **pl = &os->children.head;
1820 bfd_boolean found_dollar;
1822 /* The section name has a '\$'. Sort it with the other '\$'
1824 found_dollar = FALSE;
1825 for ( ; *pl != NULL; pl = &(*pl)->header.next)
1827 lang_input_section_type *ls;
1830 if ((*pl)->header.type != lang_input_section_enum)
1833 ls = &(*pl)->input_section;
1835 lname = bfd_get_section_name (ls->section->owner, ls->section);
1836 if (strchr (lname, '\$') == NULL)
1843 found_dollar = TRUE;
1844 if (strcmp (orig_secname, lname) < 0)
1850 if (add_child.head != NULL)
1852 add_child.head->header.next = *pl;
1853 *pl = add_child.head;
1861 gld_${EMULATION_NAME}_open_dynamic_archive
1862 (const char *arch ATTRIBUTE_UNUSED, search_dirs_type *search,
1863 lang_input_statement_type *entry)
1867 const char * format;
1868 bfd_boolean use_prefix;
1872 /* Preferred explicit import library for dll's. */
1873 { "lib%s.dll.a", FALSE },
1874 /* Alternate explicit import library for dll's. */
1875 { "%s.dll.a", FALSE },
1876 /* "libfoo.a" could be either an import lib or a static lib.
1877 For backwards compatibility, libfoo.a needs to precede
1878 libfoo.dll and foo.dll in the search. */
1879 { "lib%s.a", FALSE },
1880 /* The 'native' spelling of an import lib name is "foo.lib". */
1881 { "%s.lib", FALSE },
1883 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
1884 { "%s%s.dll", TRUE },
1886 /* Try "libfoo.dll" (default preferred dll name). */
1887 { "lib%s.dll", FALSE },
1888 /* Finally try 'native' dll name "foo.dll". */
1889 { "%s.dll", FALSE },
1890 /* Note: If adding more formats to this table, make sure to check to
1891 see if their length is longer than libname_fmt[0].format, and if
1892 so, update the call to xmalloc() below. */
1895 static unsigned int format_max_len = 0;
1896 const char * filename;
1902 if (! entry->is_archive)
1905 filename = entry->filename;
1907 if (format_max_len == 0)
1908 /* We need to allow space in the memory that we are going to allocate
1909 for the characters in the format string. Since the format array is
1910 static we only need to calculate this information once. In theory
1911 this value could also be computed statically, but this introduces
1912 the possibility for a discrepancy and hence a possible memory
1913 corruption. The lengths we compute here will be too long because
1914 they will include any formating characters (%s) in the strings, but
1915 this will not matter. */
1916 for (i = 0; libname_fmt[i].format; i++)
1917 if (format_max_len < strlen (libname_fmt[i].format))
1918 format_max_len = strlen (libname_fmt[i].format);
1920 full_string = xmalloc (strlen (search->name)
1924 + (pe_dll_search_prefix
1925 ? strlen (pe_dll_search_prefix) : 0)
1927 /* Allow for the terminating NUL and for the path
1928 separator character that is inserted between
1929 search->name and the start of the format string. */
1932 sprintf (full_string, "%s/", search->name);
1933 base_string = full_string + strlen (full_string);
1935 for (i = 0; libname_fmt[i].format; i++)
1938 if (libname_fmt[i].use_prefix)
1940 if (!pe_dll_search_prefix)
1942 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
1946 sprintf (base_string, libname_fmt[i].format, filename);
1948 if (ldfile_try_open_bfd (full_string, entry))
1952 if (!libname_fmt[i].format)
1958 entry->filename = full_string;
1964 gld_${EMULATION_NAME}_find_potential_libraries
1965 (char *name, lang_input_statement_type *entry)
1967 return ldfile_open_file_search (name, entry, "", ".lib");
1971 gld_${EMULATION_NAME}_get_script (int *isfile)
1973 # Scripts compiled in.
1974 # sed commands to quote an ld script as a C string.
1975 sc="-f stringify.sed"
1981 if (link_info.relocatable && config.build_constructors)
1984 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1985 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1986 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1987 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1988 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1989 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1990 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1991 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
1992 echo ' ; else if (link_info.pei386_auto_import == 1) return' >> e${EMULATION_NAME}.c
1993 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
1995 echo ' ; else return' >> e${EMULATION_NAME}.c
1996 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1997 echo '; }' >> e${EMULATION_NAME}.c
2002 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2004 gld_${EMULATION_NAME}_before_parse,
2007 gld_${EMULATION_NAME}_after_parse,
2008 gld_${EMULATION_NAME}_after_open,
2009 after_allocation_default,
2010 set_output_arch_default,
2011 ldemul_default_target,
2012 gld_${EMULATION_NAME}_before_allocation,
2013 gld_${EMULATION_NAME}_get_script,
2014 "${EMULATION_NAME}",
2016 gld_${EMULATION_NAME}_finish,
2017 NULL, /* Create output section statements. */
2018 gld_${EMULATION_NAME}_open_dynamic_archive,
2019 gld_${EMULATION_NAME}_place_orphan,
2020 gld_${EMULATION_NAME}_set_symbols,
2021 NULL, /* parse_args */
2022 gld${EMULATION_NAME}_add_options,
2023 gld${EMULATION_NAME}_handle_option,
2024 gld_${EMULATION_NAME}_unrecognized_file,
2025 gld_${EMULATION_NAME}_list_options,
2026 gld_${EMULATION_NAME}_recognized_file,
2027 gld_${EMULATION_NAME}_find_potential_libraries,
2028 NULL /* new_vers_pattern. */