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) ${INITIAL_SYMBOL_CHAR} S
123 static struct internal_extra_pe_aouthdr pe;
125 static flagword real_flags = 0;
126 static int support_old_code = 0;
127 static char * thumb_entry_symbol = NULL;
128 static lang_assignment_statement_type *image_base_statement = 0;
129 static unsigned short pe_dll_characteristics = 0;
132 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
133 static char *pe_out_def_filename = NULL;
134 static char *pe_implib_filename = NULL;
135 static int pe_enable_auto_image_base = 0;
136 static char *pe_dll_search_prefix = NULL;
139 extern const char *output_filename;
142 gld_${EMULATION_NAME}_before_parse (void)
144 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
145 output_filename = "${EXECUTABLE_NAME:-a.exe}";
147 config.dynamic_link = TRUE;
148 config.has_shared = 1;
151 # Cygwin no longer wants these noisy warnings. Other PE
152 # targets might like to consider adding themselves here.
155 default_auto_import=1
158 default_auto_import=-1
163 link_info.pei386_auto_import = ${default_auto_import};
164 link_info.pei386_runtime_pseudo_reloc = 1; /* Use by default version 1. */
166 #if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
167 #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe || defined TARGET_IS_arm_wince_pe
168 lang_default_entry ("WinMainCRTStartup");
170 lang_default_entry ("_WinMainCRTStartup");
173 lang_default_entry ("${ENTRY}");
178 /* PE format extra command line options. */
180 /* Used for setting flags in the PE header. */
181 #define OPTION_BASE_FILE (300 + 1)
182 #define OPTION_DLL (OPTION_BASE_FILE + 1)
183 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
184 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
185 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
186 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
187 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
188 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
189 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
190 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
191 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
192 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
193 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
194 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
195 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
196 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
197 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
198 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
199 #define OPTION_KILL_ATS (OPTION_EXCLUDE_SYMBOLS + 1)
200 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
201 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
202 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
203 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
204 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
205 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
206 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
207 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
208 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
209 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
210 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
211 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
212 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
213 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
214 #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
215 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
216 (OPTION_EXCLUDE_LIBS + 1)
217 #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
218 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
219 #define OPTION_LARGE_ADDRESS_AWARE \
220 (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
221 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
222 (OPTION_LARGE_ADDRESS_AWARE + 1)
223 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
224 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
225 #define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
226 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
227 #define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
228 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
229 #define OPTION_ENABLE_LONG_SECTION_NAMES \
230 (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
231 #define OPTION_DISABLE_LONG_SECTION_NAMES \
232 (OPTION_ENABLE_LONG_SECTION_NAMES + 1)
233 /* DLLCharacteristics flags */
234 #define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1)
235 #define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1)
236 #define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1)
237 #define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1)
238 #define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1)
239 #define OPTION_NO_BIND (OPTION_NO_SEH + 1)
240 #define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1)
241 #define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1)
244 gld${EMULATION_NAME}_add_options
245 (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl,
246 struct option **longopts, int nrl ATTRIBUTE_UNUSED,
247 struct option **really_longopts ATTRIBUTE_UNUSED)
249 static const struct option xtra_long[] = {
251 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
252 {"dll", no_argument, NULL, OPTION_DLL},
253 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
254 {"heap", required_argument, NULL, OPTION_HEAP},
255 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
256 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
257 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
258 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
259 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
260 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
261 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
262 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
263 {"stack", required_argument, NULL, OPTION_STACK},
264 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
265 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
266 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
267 {"use-nul-prefixed-import-tables", no_argument, NULL,
268 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
270 /* getopt allows abbreviations, so we do this to stop it from treating -o
271 as an abbreviation for this option */
272 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
273 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
274 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
275 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
276 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
277 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
278 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
279 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
280 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
281 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
282 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
283 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
284 /* getopt() allows abbreviations, so we do this to stop it from
285 treating -c as an abbreviation for these --compat-implib. */
286 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
287 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
288 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
289 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
290 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
291 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
292 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
293 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
294 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
295 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
296 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
297 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
298 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
300 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
301 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
302 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
303 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
304 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
305 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
306 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
307 {"no-seh", no_argument, NULL, OPTION_NO_SEH},
308 {"no-bind", no_argument, NULL, OPTION_NO_BIND},
309 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
310 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
311 {NULL, no_argument, NULL, 0}
314 *longopts = (struct option *)
315 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
316 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
319 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
320 parameters which may be input from the command line. */
331 #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
333 static definfo init[] =
335 /* imagebase must be first */
336 #define IMAGEBASEOFF 0
337 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
339 {&dll, sizeof(dll), 0, "__dll__", 0},
340 #define MSIMAGEBASEOFF 2
341 D(ImageBase, U ("__ImageBase"), NT_EXE_IMAGE_BASE),
342 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
343 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
344 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
345 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
346 D(MajorImageVersion,"__major_image_version__", 1),
347 D(MinorImageVersion,"__minor_image_version__", 0),
348 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
349 D(MajorSubsystemVersion,"__major_subsystem_version__", 3),
351 D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
353 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
354 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
355 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
356 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
357 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
358 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
359 D(LoaderFlags,"__loader_flags__", 0x0),
360 D(DllCharacteristics, "__dll_characteristics__", 0x0),
361 { NULL, 0, 0, NULL, 0 }
366 gld_${EMULATION_NAME}_list_options (FILE *file)
368 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
369 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
370 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
371 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
372 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
373 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
374 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
375 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
376 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
377 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
378 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
379 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
380 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
381 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
382 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
383 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
385 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
386 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
387 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
388 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
389 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
390 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
391 fprintf (file, _(" Exclude objects, archive members from auto\n"));
392 fprintf (file, _(" export, place into import library instead.\n"));
393 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
394 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
395 fprintf (file, _(" --out-implib <file> Generate import library\n"));
396 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
397 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
398 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
399 create __imp_<SYMBOL> as well.\n"));
400 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
401 unless user specifies one\n"));
402 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
403 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
404 an importlib, use <string><basename>.dll\n\
405 in preference to lib<basename>.dll \n"));
406 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\
407 __imp_sym for DATA references\n"));
408 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
409 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
410 adding pseudo-relocations resolved at\n\
412 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
413 auto-imported DATA.\n"));
414 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
415 or linking to DLLs (esp. auto-import)\n"));
417 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
418 greater than 2 gigabytes\n"));
419 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
420 executable image files\n"));
421 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
422 in object files\n"));
423 fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\
424 address space layout randomization (ASLR)\n"));
425 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
426 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
427 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
428 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
429 be called in this image\n"));
430 fprintf (file, _(" --no-bind Do not bind this image\n"));
431 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
432 fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
437 set_pe_name (char *name, long val)
441 /* Find the name and set it. */
442 for (i = 0; init[i].ptr; i++)
444 if (strcmp (name, init[i].symbol) == 0)
448 if (strcmp (name,"__image_base__") == 0)
449 set_pe_name (U ("__ImageBase"), val);
458 set_pe_subsystem (void)
462 const char *initial_symbol_char;
467 unsigned long temp_subsystem;
476 { "native", 1, "NtProcessStartup" },
477 { "windows", 2, "WinMainCRTStartup" },
478 { "console", 3, "mainCRTStartup" },
479 { "posix", 7, "__PosixProcessStartup"},
480 { "wince", 9, "WinMainCRTStartup" },
481 { "xbox", 14, "mainCRTStartup" },
484 /* Entry point name for arbitrary subsystem numbers. */
485 static const char default_entry[] = "mainCRTStartup";
487 /* Check for the presence of a version number. */
488 sver = strchr (optarg, ':');
490 len = strlen (optarg);
494 set_pe_name ("__major_subsystem_version__",
495 strtoul (sver + 1, &end, 0));
497 set_pe_name ("__minor_subsystem_version__",
498 strtoul (end + 1, &end, 0));
500 einfo (_("%P: warning: bad version number in -subsystem option\n"));
503 /* Check for numeric subsystem. */
504 temp_subsystem = strtoul (optarg, & end, 0);
505 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
507 /* Search list for a numeric match to use its entry point. */
508 for (i = 0; v[i].name; i++)
509 if (v[i].value == (int) temp_subsystem)
512 /* If no match, use the default. */
513 if (v[i].name != NULL)
516 entry = default_entry;
518 /* Use this subsystem. */
519 subsystem = (int) temp_subsystem;
523 /* Search for subsystem by name. */
524 for (i = 0; v[i].name; i++)
525 if (strncmp (optarg, v[i].name, len) == 0
526 && v[i].name[len] == '\0')
529 if (v[i].name == NULL)
531 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
536 subsystem = v[i].value;
539 set_pe_name ("__subsystem__", subsystem);
541 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
542 if (*initial_symbol_char != '\0')
546 /* lang_default_entry expects its argument to be permanently
547 allocated, so we don't free this string. */
548 alc_entry = xmalloc (strlen (initial_symbol_char)
551 strcpy (alc_entry, initial_symbol_char);
552 strcat (alc_entry, entry);
556 lang_default_entry (entry);
563 set_pe_value (char *name)
567 set_pe_name (name, strtoul (optarg, &end, 0));
570 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
577 set_pe_stack_heap (char *resname, char *comname)
579 set_pe_value (resname);
584 set_pe_value (comname);
587 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
592 gld${EMULATION_NAME}_handle_option (int optc)
599 case OPTION_BASE_FILE:
600 link_info.base_file = fopen (optarg, FOPEN_WB);
601 if (link_info.base_file == NULL)
603 /* xgettext:c-format */
604 fprintf (stderr, _("%s: Can't open base file %s\n"),
605 program_name, optarg);
612 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
615 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
617 case OPTION_SUBSYSTEM:
620 case OPTION_MAJOR_OS_VERSION:
621 set_pe_value ("__major_os_version__");
623 case OPTION_MINOR_OS_VERSION:
624 set_pe_value ("__minor_os_version__");
626 case OPTION_MAJOR_SUBSYSTEM_VERSION:
627 set_pe_value ("__major_subsystem_version__");
629 case OPTION_MINOR_SUBSYSTEM_VERSION:
630 set_pe_value ("__minor_subsystem_version__");
632 case OPTION_MAJOR_IMAGE_VERSION:
633 set_pe_value ("__major_image_version__");
635 case OPTION_MINOR_IMAGE_VERSION:
636 set_pe_value ("__minor_image_version__");
638 case OPTION_FILE_ALIGNMENT:
639 set_pe_value ("__file_alignment__");
641 case OPTION_SECTION_ALIGNMENT:
642 set_pe_value ("__section_alignment__");
645 set_pe_name ("__dll__", 1);
647 case OPTION_IMAGE_BASE:
648 set_pe_value ("__image_base__");
650 case OPTION_SUPPORT_OLD_CODE:
651 support_old_code = 1;
653 case OPTION_THUMB_ENTRY:
654 thumb_entry_symbol = optarg;
656 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
657 pe_use_nul_prefixed_import_tables = TRUE;
661 pe_out_def_filename = xstrdup (optarg);
663 case OPTION_EXPORT_ALL:
664 pe_dll_export_everything = 1;
666 case OPTION_EXCLUDE_SYMBOLS:
667 pe_dll_add_excludes (optarg, EXCLUDESYMS);
669 case OPTION_EXCLUDE_LIBS:
670 pe_dll_add_excludes (optarg, EXCLUDELIBS);
672 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
673 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
675 case OPTION_KILL_ATS:
678 case OPTION_STDCALL_ALIASES:
679 pe_dll_stdcall_aliases = 1;
681 case OPTION_ENABLE_STDCALL_FIXUP:
682 pe_enable_stdcall_fixup = 1;
684 case OPTION_DISABLE_STDCALL_FIXUP:
685 pe_enable_stdcall_fixup = 0;
687 case OPTION_IMPLIB_FILENAME:
688 pe_implib_filename = xstrdup (optarg);
690 case OPTION_WARN_DUPLICATE_EXPORTS:
691 pe_dll_warn_dup_exports = 1;
693 case OPTION_IMP_COMPAT:
694 pe_dll_compat_implib = 1;
696 case OPTION_ENABLE_AUTO_IMAGE_BASE:
697 pe_enable_auto_image_base = 1;
699 case OPTION_DISABLE_AUTO_IMAGE_BASE:
700 pe_enable_auto_image_base = 0;
702 case OPTION_DLL_SEARCH_PREFIX:
703 pe_dll_search_prefix = xstrdup (optarg);
705 case OPTION_NO_DEFAULT_EXCLUDES:
706 pe_dll_do_default_excludes = 0;
708 case OPTION_DLL_ENABLE_AUTO_IMPORT:
709 link_info.pei386_auto_import = 1;
711 case OPTION_DLL_DISABLE_AUTO_IMPORT:
712 link_info.pei386_auto_import = 0;
714 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
715 link_info.pei386_runtime_pseudo_reloc = 1;
717 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
718 link_info.pei386_runtime_pseudo_reloc = 1;
720 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
721 link_info.pei386_runtime_pseudo_reloc = 2;
723 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
724 link_info.pei386_runtime_pseudo_reloc = 0;
726 case OPTION_ENABLE_EXTRA_PE_DEBUG:
727 pe_dll_extra_pe_debug = 1;
730 case OPTION_LARGE_ADDRESS_AWARE:
731 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
733 case OPTION_ENABLE_LONG_SECTION_NAMES:
734 pe_use_coff_long_section_names = 1;
736 case OPTION_DISABLE_LONG_SECTION_NAMES:
737 pe_use_coff_long_section_names = 0;
739 /* Get DLLCharacteristics bits */
740 case OPTION_DYNAMIC_BASE:
741 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
743 case OPTION_FORCE_INTEGRITY:
744 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
746 case OPTION_NX_COMPAT:
747 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
749 case OPTION_NO_ISOLATION:
750 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
753 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
756 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
758 case OPTION_WDM_DRIVER:
759 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
761 case OPTION_TERMINAL_SERVER_AWARE:
762 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
766 /* Set DLLCharacteristics bits */
767 set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
775 strhash (const char *str)
777 const unsigned char *s;
784 s = (const unsigned char *) str;
785 while ((c = *s++) != '\0')
787 hash += c + (c << 17);
791 hash += len + (len << 17);
797 /* Use the output file to create a image base for relocatable DLLs. */
800 compute_dll_image_base (const char *ofile)
802 unsigned long hash = strhash (ofile);
803 return 0x61300000 + ((hash << 16) & 0x0FFC0000);
807 /* Assign values to the special symbols before the linker script is
811 gld_${EMULATION_NAME}_set_symbols (void)
813 /* Run through and invent symbols for all the
814 names and insert the defaults. */
817 if (!init[IMAGEBASEOFF].inited)
819 if (link_info.relocatable)
820 init[IMAGEBASEOFF].value = 0;
821 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
823 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base) ?
824 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
826 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
829 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
830 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
833 /* Don't do any symbol assignments if this is a relocatable link. */
834 if (link_info.relocatable)
837 /* Glue the assignments into the abs section. */
838 push_stat_ptr (&abs_output_section->children);
840 for (j = 0; init[j].ptr; j++)
842 long val = init[j].value;
843 lang_assignment_statement_type *rv;
844 rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
846 if (init[j].size == sizeof (short))
847 *(short *) init[j].ptr = val;
848 else if (init[j].size == sizeof (int))
849 *(int *) init[j].ptr = val;
850 else if (init[j].size == sizeof (long))
851 *(long *) init[j].ptr = val;
852 /* This might be a long long or other special type. */
853 else if (init[j].size == sizeof (bfd_vma))
854 *(bfd_vma *) init[j].ptr = val;
856 if (j == IMAGEBASEOFF)
857 image_base_statement = rv;
859 /* Restore the pointer. */
862 if (pe.FileAlignment >
865 einfo (_("%P: warning, file alignment > section alignment.\n"));
869 /* This is called after the linker script and the command line options
873 gld_${EMULATION_NAME}_after_parse (void)
875 /* The Windows libraries are designed for the linker to treat the
876 entry point as an undefined symbol. Otherwise, the .obj that
877 defines mainCRTStartup is brought in because it is the first
878 encountered in libc.lib and it has other symbols in it which will
879 be pulled in by the link process. To avoid this, we act as
880 though the user specified -u with the entry point symbol.
882 This function is called after the linker script and command line
883 options have been read, so at this point we know the right entry
884 point. This function is called before the input files are
885 opened, so registering the symbol as undefined will make a
888 if (! link_info.relocatable && entry_symbol.name != NULL)
889 ldlang_add_undef (entry_symbol.name);
891 /* PR ld/6744: Warn the user if they have used an ELF-only
892 option hoping it will work on PE. */
893 if (link_info.export_dynamic)
894 einfo (_("%P: warning: --export-dynamic is not supported for PE "
895 "targets, did you mean --export-all-symbols?\n"));
898 /* pe-dll.c directly accesses pe_data_import_dll,
899 so it must be defined outside of #ifdef DLL_SUPPORT.
900 Note - this variable is deliberately not initialised.
901 This allows it to be treated as a common varaible, and only
902 exist in one incarnation in a multiple target enabled linker. */
903 char * pe_data_import_dll;
906 static struct bfd_link_hash_entry *pe_undef_found_sym;
909 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
914 sl = strlen (string);
915 if (h->type == bfd_link_hash_defined
916 && strncmp (h->root.string, string, sl) == 0
917 && h->root.string[sl] == '@')
919 pe_undef_found_sym = h;
926 pe_fixup_stdcalls (void)
928 static int gave_warning_message = 0;
929 struct bfd_link_hash_entry *undef, *sym;
931 if (pe_dll_extra_pe_debug)
932 printf ("%s\n", __FUNCTION__);
934 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
935 if (undef->type == bfd_link_hash_undefined)
937 char* at = strchr (undef->root.string, '@');
938 int lead_at = (*undef->root.string == '@');
939 /* For now, don't try to fixup fastcall symbols. */
943 /* The symbol is a stdcall symbol, so let's look for a
944 cdecl symbol with the same name and resolve to that. */
945 char *cname = xstrdup (undef->root.string /* + lead_at */);
946 at = strchr (cname, '@');
948 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
950 if (sym && sym->type == bfd_link_hash_defined)
952 undef->type = bfd_link_hash_defined;
953 undef->u.def.value = sym->u.def.value;
954 undef->u.def.section = sym->u.def.section;
956 if (pe_enable_stdcall_fixup == -1)
958 einfo (_("Warning: resolving %s by linking to %s\n"),
959 undef->root.string, cname);
960 if (! gave_warning_message)
962 gave_warning_message = 1;
963 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
964 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
971 /* The symbol is a cdecl symbol, so we look for stdcall
972 symbols - which means scanning the whole symbol table. */
973 pe_undef_found_sym = 0;
974 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
975 (char *) undef->root.string);
976 sym = pe_undef_found_sym;
979 undef->type = bfd_link_hash_defined;
980 undef->u.def.value = sym->u.def.value;
981 undef->u.def.section = sym->u.def.section;
983 if (pe_enable_stdcall_fixup == -1)
985 einfo (_("Warning: resolving %s by linking to %s\n"),
986 undef->root.string, sym->root.string);
987 if (! gave_warning_message)
989 gave_warning_message = 1;
990 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
991 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1000 make_import_fixup (arelent *rel, asection *s)
1002 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1005 if (pe_dll_extra_pe_debug)
1006 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1007 (unsigned long) rel->address, (long) rel->addend);
1009 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
1010 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
1011 s->owner, s, rel->address);
1013 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
1019 pe_find_data_imports (void)
1021 struct bfd_link_hash_entry *undef, *sym;
1023 if (link_info.pei386_auto_import == 0)
1026 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1028 if (undef->type == bfd_link_hash_undefined)
1030 /* C++ symbols are *long*. */
1033 if (pe_dll_extra_pe_debug)
1034 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1036 sprintf (buf, "__imp_%s", undef->root.string);
1038 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
1040 if (sym && sym->type == bfd_link_hash_defined)
1042 bfd *b = sym->u.def.section->owner;
1046 if (link_info.pei386_auto_import == -1)
1048 static bfd_boolean warned = FALSE;
1050 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
1051 undef->root.string, buf);
1053 /* PR linker/4844. */
1057 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
1058 This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
1062 if (!bfd_generic_link_read_symbols (b))
1064 einfo (_("%B%F: could not read symbols: %E\n"), b);
1068 symbols = bfd_get_outsymbols (b);
1069 nsyms = bfd_get_symcount (b);
1071 for (i = 0; i < nsyms; i++)
1073 if (! CONST_STRNEQ (symbols[i]->name, U ("_head_")))
1076 if (pe_dll_extra_pe_debug)
1077 printf ("->%s\n", symbols[i]->name);
1079 pe_data_import_dll = (char*) (symbols[i]->name +
1080 sizeof (U ("_head_")) - 1);
1084 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
1087 /* Let's differentiate it somehow from defined. */
1088 undef->type = bfd_link_hash_defweak;
1089 /* We replace original name with __imp_ prefixed, this
1090 1) may trash memory 2) leads to duplicate symbol generation.
1091 Still, IMHO it's better than having name poluted. */
1092 undef->root.string = sym->root.string;
1093 undef->u.def.value = sym->u.def.value;
1094 undef->u.def.section = sym->u.def.section;
1101 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1103 if (pe_dll_extra_pe_debug)
1104 printf ("+%s\n", h->string);
1108 #endif /* DLL_SUPPORT */
1111 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1113 int *found = (int *) obj;
1114 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1119 gld_${EMULATION_NAME}_after_open (void)
1122 if (pe_dll_extra_pe_debug)
1125 struct bfd_link_hash_entry *sym;
1127 printf ("%s()\n", __FUNCTION__);
1129 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1130 printf ("-%s\n", sym->root.string);
1131 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1133 for (a = link_info.input_bfds; a; a = a->link_next)
1134 printf ("*%s\n",a->filename);
1138 /* Pass the wacky PE command line options into the output bfd.
1139 FIXME: This should be done via a function, rather than by
1140 including an internal BFD header. */
1142 if (coff_data (link_info.output_bfd) == NULL
1143 || coff_data (link_info.output_bfd)->pe == 0)
1144 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1145 link_info.output_bfd);
1147 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1148 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1149 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1151 /* At this point we must decide whether to use long section names
1152 in the output or not. If the user hasn't explicitly specified
1153 on the command line, we leave it to the default for the format
1154 (object files yes, image files no), except if there is debug
1155 information present; GDB relies on the long section names to
1156 find it, so enable it in that case. */
1157 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1159 /* Iterate over all sections of all input BFDs, checking
1160 for any that begin 'debug_' and are long names. */
1161 LANG_FOR_EACH_INPUT_STATEMENT (is)
1163 int found_debug = 0;
1164 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1167 pe_use_coff_long_section_names = 1;
1173 pe_output_file_set_long_section_names (link_info.output_bfd);
1176 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1177 pe_fixup_stdcalls ();
1179 pe_process_import_defs (link_info.output_bfd, &link_info);
1181 pe_find_data_imports ();
1183 #if defined (TARGET_IS_i386pe) \
1184 || defined (TARGET_IS_armpe) \
1185 || defined (TARGET_IS_arm_epoc_pe) \
1186 || defined (TARGET_IS_arm_wince_pe)
1187 if (!link_info.relocatable)
1188 pe_dll_build_sections (link_info.output_bfd, &link_info);
1190 if (link_info.shared)
1191 pe_dll_build_sections (link_info.output_bfd, &link_info);
1193 pe_exe_build_sections (link_info.output_bfd, &link_info);
1195 #endif /* DLL_SUPPORT */
1197 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1198 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1200 /* The arm backend needs special fields in the output hash structure.
1201 These will only be created if the output format is an arm format,
1202 hence we do not support linking and changing output formats at the
1203 same time. Use a link followed by objcopy to change output formats. */
1204 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1208 /* Find a BFD that can hold the interworking stubs. */
1209 LANG_FOR_EACH_INPUT_STATEMENT (is)
1211 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1218 /* This next chunk of code tries to detect the case where you have
1219 two import libraries for the same DLL (specifically,
1220 symbolically linking libm.a and libc.a in cygwin to
1221 libcygwin.a). In those cases, it's possible for function
1222 thunks from the second implib to be used but without the
1223 head/tail objects, causing an improper import table. We detect
1224 those cases and rename the "other" import libraries to match
1225 the one the head/tail come from, so that the linker will sort
1226 things nicely and produce a valid import table. */
1228 LANG_FOR_EACH_INPUT_STATEMENT (is)
1230 if (is->the_bfd->my_archive)
1232 int idata2 = 0, reloc_count=0, is_imp = 0;
1235 /* See if this is an import library thunk. */
1236 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1238 if (strcmp (sec->name, ".idata\$2") == 0)
1240 if (CONST_STRNEQ (sec->name, ".idata\$"))
1242 reloc_count += sec->reloc_count;
1245 if (is_imp && !idata2 && reloc_count)
1247 /* It is, look for the reference to head and see if it's
1248 from our own library. */
1249 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1257 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1261 if (!bfd_generic_link_read_symbols (is->the_bfd))
1263 einfo (_("%B%F: could not read symbols: %E\n"),
1267 symbols = bfd_get_outsymbols (is->the_bfd);
1269 relocs = (arelent **) xmalloc ((size_t) relsize);
1270 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1275 einfo ("%X%P: unable to process relocs: %E\n");
1279 for (i = 0; i < nrelocs; i++)
1281 struct bfd_symbol *s;
1282 struct bfd_link_hash_entry * blhe;
1283 char *other_bfd_filename;
1286 s = (relocs[i]->sym_ptr_ptr)[0];
1288 if (s->flags & BSF_LOCAL)
1291 /* Thunk section with reloc to another bfd. */
1292 blhe = bfd_link_hash_lookup (link_info.hash,
1294 FALSE, FALSE, TRUE);
1297 || blhe->type != bfd_link_hash_defined)
1301 = blhe->u.def.section->owner->my_archive
1302 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1303 : bfd_get_filename (blhe->u.def.section->owner);
1305 if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
1306 other_bfd_filename) == 0)
1309 /* Rename this implib to match the other one. */
1310 n = xmalloc (strlen (other_bfd_filename) + 1);
1311 strcpy (n, other_bfd_filename);
1312 is->the_bfd->my_archive->filename = n;
1316 /* Note - we do not free the symbols,
1317 they are now cached in the BFD. */
1327 lang_input_statement_type *is2;
1328 lang_input_statement_type *is3;
1330 /* Careful - this is a shell script. Watch those dollar signs! */
1331 /* Microsoft import libraries have every member named the same,
1332 and not in the right order for us to link them correctly. We
1333 must detect these and rename the members so that they'll link
1334 correctly. There are three types of objects: the head, the
1335 thunks, and the sentinel(s). The head is easy; it's the one
1336 with idata2. We assume that the sentinels won't have relocs,
1337 and the thunks will. It's easier than checking the symbol
1338 table for external references. */
1339 LANG_FOR_EACH_INPUT_STATEMENT (is)
1341 if (is->the_bfd->my_archive)
1344 bfd *arch = is->the_bfd->my_archive;
1346 if (cur_arch != arch)
1352 is3 && is3->the_bfd->my_archive == arch;
1353 is3 = (lang_input_statement_type *) is3->next)
1355 /* A MS dynamic import library can also contain static
1356 members, so look for the first element with a .dll
1357 extension, and use that for the remainder of the
1359 pnt = strrchr (is3->the_bfd->filename, '.');
1360 if (pnt != NULL && strcmp (pnt, ".dll") == 0)
1368 /* OK, found one. Now look to see if the remaining
1369 (dynamic import) members use the same name. */
1371 is2 && is2->the_bfd->my_archive == arch;
1372 is2 = (lang_input_statement_type *) is2->next)
1374 /* Skip static members, ie anything with a .obj
1376 pnt = strrchr (is2->the_bfd->filename, '.');
1377 if (pnt != NULL && strcmp (pnt, ".obj") == 0)
1380 if (strcmp (is3->the_bfd->filename,
1381 is2->the_bfd->filename))
1390 /* This fragment might have come from an .obj file in a Microsoft
1391 import, and not an actual import record. If this is the case,
1392 then leave the filename alone. */
1393 pnt = strrchr (is->the_bfd->filename, '.');
1395 if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
1397 int idata2 = 0, reloc_count=0;
1399 char *new_name, seq;
1401 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1403 if (strcmp (sec->name, ".idata\$2") == 0)
1405 reloc_count += sec->reloc_count;
1408 if (idata2) /* .idata2 is the TOC */
1410 else if (reloc_count > 0) /* thunks */
1415 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1416 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1417 is->the_bfd->filename = new_name;
1419 new_name = xmalloc (strlen (is->filename) + 3);
1420 sprintf (new_name, "%s.%c", is->filename, seq);
1421 is->filename = new_name;
1428 /* The following chunk of code tries to identify jump stubs in
1429 import libraries which are dead code and eliminates them
1430 from the final link. For each exported symbol <sym>, there
1431 is a object file in the import library with a .text section
1432 and several .idata\$* sections. The .text section contains the
1433 symbol definition for <sym> which is a jump stub of the form
1434 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1435 for __imp_<sym> which is the address of the slot for <sym> in
1436 the import address table. When a symbol is imported explicitly
1437 using __declspec(dllimport) declaration, the compiler generates
1438 a reference to __imp_<sym> which directly resolves to the
1439 symbol in .idata\$5, in which case the jump stub code is not
1440 needed. The following code tries to identify jump stub sections
1441 in import libraries which are not referred to by anyone and
1442 marks them for exclusion from the final link. */
1443 LANG_FOR_EACH_INPUT_STATEMENT (is)
1445 if (is->the_bfd->my_archive)
1448 asection *sec, *stub_sec = NULL;
1450 /* See if this is an import library thunk. */
1451 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1453 if (strncmp (sec->name, ".idata\$", 7) == 0)
1455 /* The section containing the jmp stub has code
1457 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1461 if (is_imp && stub_sec)
1464 long nsyms, src_count;
1465 struct bfd_link_hash_entry * blhe;
1467 if (!bfd_generic_link_read_symbols (is->the_bfd))
1469 einfo (_("%B%F: could not read symbols: %E\n"),
1473 symbols = bfd_get_outsymbols (is->the_bfd);
1474 nsyms = bfd_get_symcount (is->the_bfd);
1476 for (src_count = 0; src_count < nsyms; src_count++)
1478 if (symbols[src_count]->section->id == stub_sec->id)
1480 /* This symbol belongs to the section containing
1482 blhe = bfd_link_hash_lookup (link_info.hash,
1483 symbols[src_count]->name,
1484 FALSE, FALSE, TRUE);
1485 /* If the symbol in the stub section has no other
1486 undefined references, exclude the stub section
1487 from the final link. */
1488 if (blhe && (blhe->type == bfd_link_hash_defined)
1489 && (blhe->u.undef.next == NULL))
1490 stub_sec->flags |= SEC_EXCLUDE;
1500 gld_${EMULATION_NAME}_before_allocation (void)
1502 #ifdef TARGET_IS_ppcpe
1503 /* Here we rummage through the found bfds to collect toc information. */
1505 LANG_FOR_EACH_INPUT_STATEMENT (is)
1507 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1509 /* xgettext:c-format */
1510 einfo (_("Errors encountered processing file %s\n"), is->filename);
1515 /* We have seen it all. Allocate it, and carry on. */
1516 ppc_allocate_toc_section (&link_info);
1517 #endif /* TARGET_IS_ppcpe */
1519 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1520 /* FIXME: we should be able to set the size of the interworking stub
1523 Here we rummage through the found bfds to collect glue
1524 information. FIXME: should this be based on a command line
1527 LANG_FOR_EACH_INPUT_STATEMENT (is)
1529 if (! bfd_arm_process_before_allocation
1530 (is->the_bfd, & link_info, support_old_code))
1532 /* xgettext:c-format */
1533 einfo (_("Errors encountered processing file %s for interworking\n"),
1539 /* We have seen it all. Allocate it, and carry on. */
1540 bfd_arm_allocate_interworking_sections (& link_info);
1541 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1543 before_allocation_default ();
1547 /* This is called when an input file isn't recognized as a BFD. We
1548 check here for .DEF files and pull them in automatically. */
1551 saw_option (char *option)
1555 for (i = 0; init[i].ptr; i++)
1556 if (strcmp (init[i].symbol, option) == 0)
1557 return init[i].inited;
1560 #endif /* DLL_SUPPORT */
1563 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1566 const char *ext = entry->filename + strlen (entry->filename) - 4;
1568 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1570 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1574 int i, buflen=0, len;
1577 for (i = 0; i < pe_def_file->num_exports; i++)
1579 len = strlen (pe_def_file->exports[i].internal_name);
1580 if (buflen < len + 2)
1584 buf = (char *) xmalloc (buflen);
1586 for (i = 0; i < pe_def_file->num_exports; i++)
1588 struct bfd_link_hash_entry *h;
1590 sprintf (buf, "%s%s", U (""), pe_def_file->exports[i].internal_name);
1592 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1593 if (h == (struct bfd_link_hash_entry *) NULL)
1594 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1595 if (h->type == bfd_link_hash_new)
1597 h->type = bfd_link_hash_undefined;
1598 h->u.undef.abfd = NULL;
1599 bfd_link_add_undef (link_info.hash, h);
1604 /* def_file_print (stdout, pe_def_file); */
1605 if (pe_def_file->is_dll == 1)
1606 link_info.shared = 1;
1608 if (pe_def_file->base_address != (bfd_vma)(-1))
1611 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1612 = init[IMAGEBASEOFF].value
1613 = pe_def_file->base_address;
1614 init[IMAGEBASEOFF].inited = 1;
1615 if (image_base_statement)
1616 image_base_statement->exp = exp_assop ('=', "__image_base__",
1617 exp_intop (pe.ImageBase));
1620 if (pe_def_file->stack_reserve != -1
1621 && ! saw_option ("__size_of_stack_reserve__"))
1623 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1624 if (pe_def_file->stack_commit != -1)
1625 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1627 if (pe_def_file->heap_reserve != -1
1628 && ! saw_option ("__size_of_heap_reserve__"))
1630 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1631 if (pe_def_file->heap_commit != -1)
1632 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1642 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1645 #ifdef TARGET_IS_i386pe
1646 pe_dll_id_target ("pei-i386");
1648 #ifdef TARGET_IS_shpe
1649 pe_dll_id_target ("pei-shl");
1651 #ifdef TARGET_IS_mipspe
1652 pe_dll_id_target ("pei-mips");
1654 #ifdef TARGET_IS_armpe
1655 pe_dll_id_target ("pei-arm-little");
1657 #ifdef TARGET_IS_arm_epoc_pe
1658 pe_dll_id_target ("epoc-pei-arm-little");
1660 #ifdef TARGET_IS_arm_wince_pe
1661 pe_dll_id_target ("pei-arm-wince-little");
1663 if (pe_bfd_is_dll (entry->the_bfd))
1664 return pe_implied_import_dll (entry->filename);
1670 gld_${EMULATION_NAME}_finish (void)
1672 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1673 struct bfd_link_hash_entry * h;
1675 if (thumb_entry_symbol != NULL)
1677 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1678 FALSE, FALSE, TRUE);
1680 if (h != (struct bfd_link_hash_entry *) NULL
1681 && (h->type == bfd_link_hash_defined
1682 || h->type == bfd_link_hash_defweak)
1683 && h->u.def.section->output_section != NULL)
1685 static char buffer[32];
1688 /* Special procesing is required for a Thumb entry symbol. The
1689 bottom bit of its address must be set. */
1690 val = (h->u.def.value
1691 + bfd_get_section_vma (link_info.output_bfd,
1692 h->u.def.section->output_section)
1693 + h->u.def.section->output_offset);
1697 /* Now convert this value into a string and store it in entry_symbol
1698 where the lang_finish() function will pick it up. */
1702 sprintf_vma (buffer + 2, val);
1704 if (entry_symbol.name != NULL && entry_from_cmdline)
1705 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1706 thumb_entry_symbol, entry_symbol.name);
1707 entry_symbol.name = buffer;
1710 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
1712 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
1717 if (link_info.shared
1718 #if !defined(TARGET_IS_shpe) && !defined(TARGET_IS_mipspe)
1719 || (!link_info.relocatable && pe_def_file->num_exports != 0)
1723 pe_dll_fill_sections (link_info.output_bfd, &link_info);
1724 if (pe_implib_filename)
1725 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info);
1727 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1728 /* ARM doesn't need relocs. */
1731 pe_exe_fill_sections (link_info.output_bfd, &link_info);
1735 if (pe_out_def_filename)
1736 pe_dll_generate_def_file (pe_out_def_filename);
1737 #endif /* DLL_SUPPORT */
1739 /* I don't know where .idata gets set as code, but it shouldn't be. */
1741 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1745 asec->flags &= ~SEC_CODE;
1746 asec->flags |= SEC_DATA;
1752 /* Place an orphan section.
1754 We use this to put sections in a reasonable place in the file, and
1755 to ensure that they are aligned as required.
1757 We handle grouped sections here as well. A section named .foo\$nn
1758 goes into the output section .foo. All grouped sections are sorted
1761 Grouped sections for the default sections are handled by the
1762 default linker script using wildcards, and are sorted by
1765 static lang_output_section_statement_type *
1766 gld_${EMULATION_NAME}_place_orphan (asection *s,
1767 const char *secname,
1770 const char *orig_secname = secname;
1771 char *dollar = NULL;
1772 lang_output_section_statement_type *os;
1773 lang_statement_list_type add_child;
1774 lang_statement_union_type **pl;
1776 /* Look through the script to see where to place this section. */
1777 if (!link_info.relocatable
1778 && (dollar = strchr (secname, '\$')) != NULL)
1780 size_t len = dollar - secname;
1781 char *newname = xmalloc (len + 1);
1782 memcpy (newname, secname, len);
1783 newname[len] = '\0';
1787 lang_list_init (&add_child);
1790 && (os = lang_output_section_find (secname)) != NULL
1791 && os->bfd_section != NULL
1792 && (os->bfd_section->flags == 0
1793 || ((s->flags ^ os->bfd_section->flags)
1794 & (SEC_LOAD | SEC_ALLOC)) == 0))
1796 /* We already have an output section statement with this
1797 name, and its bfd section has compatible flags.
1798 If the section already exists but does not have any flags set,
1799 then it has been created by the linker, probably as a result of
1800 a --section-start command line switch. */
1801 lang_add_section (&add_child, s, os);
1805 static struct orphan_save hold[] =
1808 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1811 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1814 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1820 enum orphan_save_index
1827 static int orphan_init_done = 0;
1828 struct orphan_save *place;
1829 lang_output_section_statement_type *after;
1830 etree_type *address;
1832 if (!orphan_init_done)
1834 struct orphan_save *ho;
1835 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1836 if (ho->name != NULL)
1838 ho->os = lang_output_section_find (ho->name);
1839 if (ho->os != NULL && ho->os->flags == 0)
1840 ho->os->flags = ho->flags;
1842 orphan_init_done = 1;
1845 /* Try to put the new output section in a reasonable place based
1846 on the section name and section flags. */
1849 if ((s->flags & SEC_ALLOC) == 0)
1851 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1852 place = &hold[orphan_bss];
1853 else if ((s->flags & SEC_READONLY) == 0)
1854 place = &hold[orphan_data];
1855 else if ((s->flags & SEC_CODE) == 0)
1856 place = &hold[orphan_rodata];
1858 place = &hold[orphan_text];
1863 if (place->os == NULL)
1864 place->os = lang_output_section_find (place->name);
1867 after = lang_output_section_find_by_flags (s, &place->os, NULL);
1869 /* *ABS* is always the first output section statement. */
1870 after = (&lang_output_section_statement.head
1871 ->output_section_statement);
1874 /* All sections in an executable must be aligned to a page boundary. */
1875 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
1876 os = lang_insert_orphan (s, secname, constraint, after, place, address,
1880 /* If the section name has a '\$', sort it with the other '\$'
1882 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
1884 lang_input_section_type *ls;
1887 if ((*pl)->header.type != lang_input_section_enum)
1890 ls = &(*pl)->input_section;
1892 lname = bfd_get_section_name (ls->section->owner, ls->section);
1893 if (strchr (lname, '\$') != NULL
1894 && (dollar == NULL || strcmp (orig_secname, lname) < 0))
1898 if (add_child.head != NULL)
1900 *add_child.tail = *pl;
1901 *pl = add_child.head;
1908 gld_${EMULATION_NAME}_open_dynamic_archive
1909 (const char *arch ATTRIBUTE_UNUSED, search_dirs_type *search,
1910 lang_input_statement_type *entry)
1914 const char * format;
1915 bfd_boolean use_prefix;
1919 /* Preferred explicit import library for dll's. */
1920 { "lib%s.dll.a", FALSE },
1921 /* Alternate explicit import library for dll's. */
1922 { "%s.dll.a", FALSE },
1923 /* "libfoo.a" could be either an import lib or a static lib.
1924 For backwards compatibility, libfoo.a needs to precede
1925 libfoo.dll and foo.dll in the search. */
1926 { "lib%s.a", FALSE },
1927 /* The 'native' spelling of an import lib name is "foo.lib". */
1928 { "%s.lib", FALSE },
1930 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
1931 { "%s%s.dll", TRUE },
1933 /* Try "libfoo.dll" (default preferred dll name). */
1934 { "lib%s.dll", FALSE },
1935 /* Finally try 'native' dll name "foo.dll". */
1936 { "%s.dll", FALSE },
1937 /* Note: If adding more formats to this table, make sure to check to
1938 see if their length is longer than libname_fmt[0].format, and if
1939 so, update the call to xmalloc() below. */
1942 static unsigned int format_max_len = 0;
1943 const char * filename;
1949 if (! entry->is_archive)
1952 filename = entry->filename;
1954 if (format_max_len == 0)
1955 /* We need to allow space in the memory that we are going to allocate
1956 for the characters in the format string. Since the format array is
1957 static we only need to calculate this information once. In theory
1958 this value could also be computed statically, but this introduces
1959 the possibility for a discrepancy and hence a possible memory
1960 corruption. The lengths we compute here will be too long because
1961 they will include any formating characters (%s) in the strings, but
1962 this will not matter. */
1963 for (i = 0; libname_fmt[i].format; i++)
1964 if (format_max_len < strlen (libname_fmt[i].format))
1965 format_max_len = strlen (libname_fmt[i].format);
1967 full_string = xmalloc (strlen (search->name)
1971 + (pe_dll_search_prefix
1972 ? strlen (pe_dll_search_prefix) : 0)
1974 /* Allow for the terminating NUL and for the path
1975 separator character that is inserted between
1976 search->name and the start of the format string. */
1979 sprintf (full_string, "%s/", search->name);
1980 base_string = full_string + strlen (full_string);
1982 for (i = 0; libname_fmt[i].format; i++)
1985 if (libname_fmt[i].use_prefix)
1987 if (!pe_dll_search_prefix)
1989 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
1993 sprintf (base_string, libname_fmt[i].format, filename);
1995 if (ldfile_try_open_bfd (full_string, entry))
1999 if (!libname_fmt[i].format)
2005 entry->filename = full_string;
2011 gld_${EMULATION_NAME}_find_potential_libraries
2012 (char *name, lang_input_statement_type *entry)
2014 return ldfile_open_file_search (name, entry, "", ".lib");
2018 gld_${EMULATION_NAME}_get_script (int *isfile)
2020 # Scripts compiled in.
2021 # sed commands to quote an ld script as a C string.
2022 sc="-f stringify.sed"
2028 if (link_info.relocatable && config.build_constructors)
2031 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2032 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
2033 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2034 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2035 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2036 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2037 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2038 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2039 echo ' ; else if (link_info.pei386_auto_import == 1) return' >> e${EMULATION_NAME}.c
2040 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
2042 echo ' ; else return' >> e${EMULATION_NAME}.c
2043 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2044 echo '; }' >> e${EMULATION_NAME}.c
2049 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2051 gld_${EMULATION_NAME}_before_parse,
2054 gld_${EMULATION_NAME}_after_parse,
2055 gld_${EMULATION_NAME}_after_open,
2056 after_allocation_default,
2057 set_output_arch_default,
2058 ldemul_default_target,
2059 gld_${EMULATION_NAME}_before_allocation,
2060 gld_${EMULATION_NAME}_get_script,
2061 "${EMULATION_NAME}",
2063 gld_${EMULATION_NAME}_finish,
2064 NULL, /* Create output section statements. */
2065 gld_${EMULATION_NAME}_open_dynamic_archive,
2066 gld_${EMULATION_NAME}_place_orphan,
2067 gld_${EMULATION_NAME}_set_symbols,
2068 NULL, /* parse_args */
2069 gld${EMULATION_NAME}_add_options,
2070 gld${EMULATION_NAME}_handle_option,
2071 gld_${EMULATION_NAME}_unrecognized_file,
2072 gld_${EMULATION_NAME}_list_options,
2073 gld_${EMULATION_NAME}_recognized_file,
2074 gld_${EMULATION_NAME}_find_potential_libraries,
2075 NULL /* new_vers_pattern. */