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,
246 char **shortopts ATTRIBUTE_UNUSED,
248 struct option **longopts,
249 int nrl ATTRIBUTE_UNUSED,
250 struct option **really_longopts ATTRIBUTE_UNUSED)
252 static const struct option xtra_long[] = {
254 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
255 {"dll", no_argument, NULL, OPTION_DLL},
256 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
257 {"heap", required_argument, NULL, OPTION_HEAP},
258 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
259 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
260 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
261 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
262 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
263 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
264 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
265 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
266 {"stack", required_argument, NULL, OPTION_STACK},
267 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
268 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
269 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
270 {"use-nul-prefixed-import-tables", no_argument, NULL,
271 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
273 /* getopt allows abbreviations, so we do this to stop it
274 from treating -o as an abbreviation for this option. */
275 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
276 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
277 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
278 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
279 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
280 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
281 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
282 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
283 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
284 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
285 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
286 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
287 /* getopt() allows abbreviations, so we do this to stop it from
288 treating -c as an abbreviation for these --compat-implib. */
289 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
290 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
291 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
292 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
293 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
294 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
295 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
296 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
297 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
298 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
299 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
300 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
301 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
303 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
304 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
305 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
306 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
307 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
308 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
309 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
310 {"no-seh", no_argument, NULL, OPTION_NO_SEH},
311 {"no-bind", no_argument, NULL, OPTION_NO_BIND},
312 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
313 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
314 {NULL, no_argument, NULL, 0}
318 = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
319 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
322 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
323 parameters which may be input from the command line. */
334 #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
336 static definfo init[] =
338 /* imagebase must be first */
339 #define IMAGEBASEOFF 0
340 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
342 {&dll, sizeof(dll), 0, "__dll__", 0},
343 #define MSIMAGEBASEOFF 2
344 D(ImageBase, U ("__ImageBase"), NT_EXE_IMAGE_BASE),
345 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
346 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
347 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
348 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
349 D(MajorImageVersion,"__major_image_version__", 1),
350 D(MinorImageVersion,"__minor_image_version__", 0),
351 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
352 D(MajorSubsystemVersion,"__major_subsystem_version__", 3),
354 D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
356 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
357 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
358 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
359 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
360 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
361 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
362 D(LoaderFlags,"__loader_flags__", 0x0),
363 D(DllCharacteristics, "__dll_characteristics__", 0x0),
364 { NULL, 0, 0, NULL, 0 }
369 gld_${EMULATION_NAME}_list_options (FILE *file)
371 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
372 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
373 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
374 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
375 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
376 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
377 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
378 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
379 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
380 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
381 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
382 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
383 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
384 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
385 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
386 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
388 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
389 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
390 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
391 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
392 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
393 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
394 fprintf (file, _(" Exclude objects, archive members from auto\n"));
395 fprintf (file, _(" export, place into import library instead.\n"));
396 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
397 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
398 fprintf (file, _(" --out-implib <file> Generate import library\n"));
399 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
400 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
401 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
402 create __imp_<SYMBOL> as well.\n"));
403 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
404 unless user specifies one\n"));
405 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
406 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
407 an importlib, use <string><basename>.dll\n\
408 in preference to lib<basename>.dll \n"));
409 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\
410 __imp_sym for DATA references\n"));
411 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
412 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
413 adding pseudo-relocations resolved at\n\
415 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
416 auto-imported DATA.\n"));
417 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
418 or linking to DLLs (esp. auto-import)\n"));
420 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
421 greater than 2 gigabytes\n"));
422 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
423 executable image files\n"));
424 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
425 in object files\n"));
426 fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\
427 address space layout randomization (ASLR)\n"));
428 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
429 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
430 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
431 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
432 be called in this image\n"));
433 fprintf (file, _(" --no-bind Do not bind this image\n"));
434 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
435 fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
440 set_pe_name (char *name, long val)
444 /* Find the name and set it. */
445 for (i = 0; init[i].ptr; i++)
447 if (strcmp (name, init[i].symbol) == 0)
451 if (strcmp (name,"__image_base__") == 0)
452 set_pe_name (U ("__ImageBase"), val);
461 set_pe_subsystem (void)
465 const char *initial_symbol_char;
470 unsigned long temp_subsystem;
479 { "native", 1, "NtProcessStartup" },
480 { "windows", 2, "WinMainCRTStartup" },
481 { "console", 3, "mainCRTStartup" },
482 { "posix", 7, "__PosixProcessStartup"},
483 { "wince", 9, "WinMainCRTStartup" },
484 { "xbox", 14, "mainCRTStartup" },
487 /* Entry point name for arbitrary subsystem numbers. */
488 static const char default_entry[] = "mainCRTStartup";
490 /* Check for the presence of a version number. */
491 sver = strchr (optarg, ':');
493 len = strlen (optarg);
497 set_pe_name ("__major_subsystem_version__",
498 strtoul (sver + 1, &end, 0));
500 set_pe_name ("__minor_subsystem_version__",
501 strtoul (end + 1, &end, 0));
503 einfo (_("%P: warning: bad version number in -subsystem option\n"));
506 /* Check for numeric subsystem. */
507 temp_subsystem = strtoul (optarg, & end, 0);
508 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
510 /* Search list for a numeric match to use its entry point. */
511 for (i = 0; v[i].name; i++)
512 if (v[i].value == (int) temp_subsystem)
515 /* If no match, use the default. */
516 if (v[i].name != NULL)
519 entry = default_entry;
521 /* Use this subsystem. */
522 subsystem = (int) temp_subsystem;
526 /* Search for subsystem by name. */
527 for (i = 0; v[i].name; i++)
528 if (strncmp (optarg, v[i].name, len) == 0
529 && v[i].name[len] == '\0')
532 if (v[i].name == NULL)
534 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
539 subsystem = v[i].value;
542 set_pe_name ("__subsystem__", subsystem);
544 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
545 if (*initial_symbol_char != '\0')
549 /* lang_default_entry expects its argument to be permanently
550 allocated, so we don't free this string. */
551 alc_entry = xmalloc (strlen (initial_symbol_char)
554 strcpy (alc_entry, initial_symbol_char);
555 strcat (alc_entry, entry);
559 lang_default_entry (entry);
566 set_pe_value (char *name)
570 set_pe_name (name, strtoul (optarg, &end, 0));
573 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
580 set_pe_stack_heap (char *resname, char *comname)
582 set_pe_value (resname);
587 set_pe_value (comname);
590 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
595 gld${EMULATION_NAME}_handle_option (int optc)
602 case OPTION_BASE_FILE:
603 link_info.base_file = fopen (optarg, FOPEN_WB);
604 if (link_info.base_file == NULL)
606 /* xgettext:c-format */
607 fprintf (stderr, _("%s: Can't open base file %s\n"),
608 program_name, optarg);
615 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
618 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
620 case OPTION_SUBSYSTEM:
623 case OPTION_MAJOR_OS_VERSION:
624 set_pe_value ("__major_os_version__");
626 case OPTION_MINOR_OS_VERSION:
627 set_pe_value ("__minor_os_version__");
629 case OPTION_MAJOR_SUBSYSTEM_VERSION:
630 set_pe_value ("__major_subsystem_version__");
632 case OPTION_MINOR_SUBSYSTEM_VERSION:
633 set_pe_value ("__minor_subsystem_version__");
635 case OPTION_MAJOR_IMAGE_VERSION:
636 set_pe_value ("__major_image_version__");
638 case OPTION_MINOR_IMAGE_VERSION:
639 set_pe_value ("__minor_image_version__");
641 case OPTION_FILE_ALIGNMENT:
642 set_pe_value ("__file_alignment__");
644 case OPTION_SECTION_ALIGNMENT:
645 set_pe_value ("__section_alignment__");
648 set_pe_name ("__dll__", 1);
650 case OPTION_IMAGE_BASE:
651 set_pe_value ("__image_base__");
653 case OPTION_SUPPORT_OLD_CODE:
654 support_old_code = 1;
656 case OPTION_THUMB_ENTRY:
657 thumb_entry_symbol = optarg;
659 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
660 pe_use_nul_prefixed_import_tables = TRUE;
664 pe_out_def_filename = xstrdup (optarg);
666 case OPTION_EXPORT_ALL:
667 pe_dll_export_everything = 1;
669 case OPTION_EXCLUDE_SYMBOLS:
670 pe_dll_add_excludes (optarg, EXCLUDESYMS);
672 case OPTION_EXCLUDE_LIBS:
673 pe_dll_add_excludes (optarg, EXCLUDELIBS);
675 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
676 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
678 case OPTION_KILL_ATS:
681 case OPTION_STDCALL_ALIASES:
682 pe_dll_stdcall_aliases = 1;
684 case OPTION_ENABLE_STDCALL_FIXUP:
685 pe_enable_stdcall_fixup = 1;
687 case OPTION_DISABLE_STDCALL_FIXUP:
688 pe_enable_stdcall_fixup = 0;
690 case OPTION_IMPLIB_FILENAME:
691 pe_implib_filename = xstrdup (optarg);
693 case OPTION_WARN_DUPLICATE_EXPORTS:
694 pe_dll_warn_dup_exports = 1;
696 case OPTION_IMP_COMPAT:
697 pe_dll_compat_implib = 1;
699 case OPTION_ENABLE_AUTO_IMAGE_BASE:
700 pe_enable_auto_image_base = 1;
702 case OPTION_DISABLE_AUTO_IMAGE_BASE:
703 pe_enable_auto_image_base = 0;
705 case OPTION_DLL_SEARCH_PREFIX:
706 pe_dll_search_prefix = xstrdup (optarg);
708 case OPTION_NO_DEFAULT_EXCLUDES:
709 pe_dll_do_default_excludes = 0;
711 case OPTION_DLL_ENABLE_AUTO_IMPORT:
712 link_info.pei386_auto_import = 1;
714 case OPTION_DLL_DISABLE_AUTO_IMPORT:
715 link_info.pei386_auto_import = 0;
717 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
718 link_info.pei386_runtime_pseudo_reloc = 1;
720 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
721 link_info.pei386_runtime_pseudo_reloc = 1;
723 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
724 link_info.pei386_runtime_pseudo_reloc = 2;
726 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
727 link_info.pei386_runtime_pseudo_reloc = 0;
729 case OPTION_ENABLE_EXTRA_PE_DEBUG:
730 pe_dll_extra_pe_debug = 1;
733 case OPTION_LARGE_ADDRESS_AWARE:
734 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
736 case OPTION_ENABLE_LONG_SECTION_NAMES:
737 pe_use_coff_long_section_names = 1;
739 case OPTION_DISABLE_LONG_SECTION_NAMES:
740 pe_use_coff_long_section_names = 0;
742 /* Get DLLCharacteristics bits */
743 case OPTION_DYNAMIC_BASE:
744 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
746 case OPTION_FORCE_INTEGRITY:
747 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
749 case OPTION_NX_COMPAT:
750 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
752 case OPTION_NO_ISOLATION:
753 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
756 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
759 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
761 case OPTION_WDM_DRIVER:
762 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
764 case OPTION_TERMINAL_SERVER_AWARE:
765 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
769 /* Set DLLCharacteristics bits */
770 set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
778 strhash (const char *str)
780 const unsigned char *s;
787 s = (const unsigned char *) str;
788 while ((c = *s++) != '\0')
790 hash += c + (c << 17);
794 hash += len + (len << 17);
800 /* Use the output file to create a image base for relocatable DLLs. */
803 compute_dll_image_base (const char *ofile)
805 unsigned long hash = strhash (ofile);
806 return 0x61300000 + ((hash << 16) & 0x0FFC0000);
810 /* Assign values to the special symbols before the linker script is
814 gld_${EMULATION_NAME}_set_symbols (void)
816 /* Run through and invent symbols for all the
817 names and insert the defaults. */
820 if (!init[IMAGEBASEOFF].inited)
822 if (link_info.relocatable)
823 init[IMAGEBASEOFF].value = 0;
824 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
827 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base
828 ? compute_dll_image_base (output_filename)
829 : NT_DLL_IMAGE_BASE);
831 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
835 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
836 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
839 /* Don't do any symbol assignments if this is a relocatable link. */
840 if (link_info.relocatable)
843 /* Glue the assignments into the abs section. */
844 push_stat_ptr (&abs_output_section->children);
846 for (j = 0; init[j].ptr; j++)
848 long val = init[j].value;
849 lang_assignment_statement_type *rv;
850 rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
852 if (init[j].size == sizeof (short))
853 *(short *) init[j].ptr = val;
854 else if (init[j].size == sizeof (int))
855 *(int *) init[j].ptr = val;
856 else if (init[j].size == sizeof (long))
857 *(long *) init[j].ptr = val;
858 /* This might be a long long or other special type. */
859 else if (init[j].size == sizeof (bfd_vma))
860 *(bfd_vma *) init[j].ptr = val;
862 if (j == IMAGEBASEOFF)
863 image_base_statement = rv;
865 /* Restore the pointer. */
868 if (pe.FileAlignment > pe.SectionAlignment)
870 einfo (_("%P: warning, file alignment > section alignment.\n"));
874 /* This is called after the linker script and the command line options
878 gld_${EMULATION_NAME}_after_parse (void)
880 /* PR ld/6744: Warn the user if they have used an ELF-only
881 option hoping it will work on PE. */
882 if (link_info.export_dynamic)
883 einfo (_("%P: warning: --export-dynamic is not supported for PE "
884 "targets, did you mean --export-all-symbols?\n"));
886 after_parse_default ();
889 /* pe-dll.c directly accesses pe_data_import_dll,
890 so it must be defined outside of #ifdef DLL_SUPPORT.
891 Note - this variable is deliberately not initialised.
892 This allows it to be treated as a common varaible, and only
893 exist in one incarnation in a multiple target enabled linker. */
894 char * pe_data_import_dll;
897 static struct bfd_link_hash_entry *pe_undef_found_sym;
900 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
905 sl = strlen (string);
906 if (h->type == bfd_link_hash_defined
907 && strncmp (h->root.string, string, sl) == 0
908 && h->root.string[sl] == '@')
910 pe_undef_found_sym = h;
917 pe_fixup_stdcalls (void)
919 static int gave_warning_message = 0;
920 struct bfd_link_hash_entry *undef, *sym;
922 if (pe_dll_extra_pe_debug)
923 printf ("%s\n", __FUNCTION__);
925 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
926 if (undef->type == bfd_link_hash_undefined)
928 char* at = strchr (undef->root.string, '@');
929 int lead_at = (*undef->root.string == '@');
930 /* For now, don't try to fixup fastcall symbols. */
934 /* The symbol is a stdcall symbol, so let's look for a
935 cdecl symbol with the same name and resolve to that. */
936 char *cname = xstrdup (undef->root.string /* + lead_at */);
937 at = strchr (cname, '@');
939 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
941 if (sym && sym->type == bfd_link_hash_defined)
943 undef->type = bfd_link_hash_defined;
944 undef->u.def.value = sym->u.def.value;
945 undef->u.def.section = sym->u.def.section;
947 if (pe_enable_stdcall_fixup == -1)
949 einfo (_("Warning: resolving %s by linking to %s\n"),
950 undef->root.string, cname);
951 if (! gave_warning_message)
953 gave_warning_message = 1;
954 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
955 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
962 /* The symbol is a cdecl symbol, so we look for stdcall
963 symbols - which means scanning the whole symbol table. */
964 pe_undef_found_sym = 0;
965 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
966 (char *) undef->root.string);
967 sym = pe_undef_found_sym;
970 undef->type = bfd_link_hash_defined;
971 undef->u.def.value = sym->u.def.value;
972 undef->u.def.section = sym->u.def.section;
974 if (pe_enable_stdcall_fixup == -1)
976 einfo (_("Warning: resolving %s by linking to %s\n"),
977 undef->root.string, sym->root.string);
978 if (! gave_warning_message)
980 gave_warning_message = 1;
981 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
982 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
991 make_import_fixup (arelent *rel, asection *s)
993 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
996 if (pe_dll_extra_pe_debug)
997 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
998 (unsigned long) rel->address, (long) rel->addend);
1000 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
1001 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
1002 s->owner, s, rel->address);
1004 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
1010 pe_find_data_imports (void)
1012 struct bfd_link_hash_entry *undef, *sym;
1014 if (link_info.pei386_auto_import == 0)
1017 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1019 if (undef->type == bfd_link_hash_undefined)
1021 /* C++ symbols are *long*. */
1024 if (pe_dll_extra_pe_debug)
1025 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1027 sprintf (buf, "__imp_%s", undef->root.string);
1029 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
1031 if (sym && sym->type == bfd_link_hash_defined)
1033 bfd *b = sym->u.def.section->owner;
1037 if (link_info.pei386_auto_import == -1)
1039 static bfd_boolean warned = FALSE;
1041 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
1042 undef->root.string, buf);
1044 /* PR linker/4844. */
1048 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
1049 This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
1053 if (!bfd_generic_link_read_symbols (b))
1055 einfo (_("%B%F: could not read symbols: %E\n"), b);
1059 symbols = bfd_get_outsymbols (b);
1060 nsyms = bfd_get_symcount (b);
1062 for (i = 0; i < nsyms; i++)
1064 if (! CONST_STRNEQ (symbols[i]->name, U ("_head_")))
1067 if (pe_dll_extra_pe_debug)
1068 printf ("->%s\n", symbols[i]->name);
1070 pe_data_import_dll = (char*) (symbols[i]->name +
1071 sizeof (U ("_head_")) - 1);
1075 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
1078 /* Let's differentiate it somehow from defined. */
1079 undef->type = bfd_link_hash_defweak;
1080 /* We replace original name with __imp_ prefixed, this
1081 1) may trash memory 2) leads to duplicate symbol generation.
1082 Still, IMHO it's better than having name poluted. */
1083 undef->root.string = sym->root.string;
1084 undef->u.def.value = sym->u.def.value;
1085 undef->u.def.section = sym->u.def.section;
1092 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1094 if (pe_dll_extra_pe_debug)
1095 printf ("+%s\n", h->string);
1099 #endif /* DLL_SUPPORT */
1102 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1104 int *found = (int *) obj;
1105 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1110 gld_${EMULATION_NAME}_after_open (void)
1113 if (pe_dll_extra_pe_debug)
1116 struct bfd_link_hash_entry *sym;
1118 printf ("%s()\n", __FUNCTION__);
1120 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1121 printf ("-%s\n", sym->root.string);
1122 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1124 for (a = link_info.input_bfds; a; a = a->link_next)
1125 printf ("*%s\n",a->filename);
1129 /* Pass the wacky PE command line options into the output bfd.
1130 FIXME: This should be done via a function, rather than by
1131 including an internal BFD header. */
1133 if (coff_data (link_info.output_bfd) == NULL
1134 || coff_data (link_info.output_bfd)->pe == 0)
1135 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1136 link_info.output_bfd);
1138 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1139 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1140 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1142 /* At this point we must decide whether to use long section names
1143 in the output or not. If the user hasn't explicitly specified
1144 on the command line, we leave it to the default for the format
1145 (object files yes, image files no), except if there is debug
1146 information present; GDB relies on the long section names to
1147 find it, so enable it in that case. */
1148 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1150 /* Iterate over all sections of all input BFDs, checking
1151 for any that begin 'debug_' and are long names. */
1152 LANG_FOR_EACH_INPUT_STATEMENT (is)
1154 int found_debug = 0;
1155 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1158 pe_use_coff_long_section_names = 1;
1164 pe_output_file_set_long_section_names (link_info.output_bfd);
1167 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1168 pe_fixup_stdcalls ();
1170 pe_process_import_defs (link_info.output_bfd, &link_info);
1172 pe_find_data_imports ();
1174 #if defined (TARGET_IS_i386pe) \
1175 || defined (TARGET_IS_armpe) \
1176 || defined (TARGET_IS_arm_epoc_pe) \
1177 || defined (TARGET_IS_arm_wince_pe)
1178 if (!link_info.relocatable)
1179 pe_dll_build_sections (link_info.output_bfd, &link_info);
1181 if (link_info.shared)
1182 pe_dll_build_sections (link_info.output_bfd, &link_info);
1184 pe_exe_build_sections (link_info.output_bfd, &link_info);
1186 #endif /* DLL_SUPPORT */
1188 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1189 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1191 /* The arm backend needs special fields in the output hash structure.
1192 These will only be created if the output format is an arm format,
1193 hence we do not support linking and changing output formats at the
1194 same time. Use a link followed by objcopy to change output formats. */
1195 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1199 /* Find a BFD that can hold the interworking stubs. */
1200 LANG_FOR_EACH_INPUT_STATEMENT (is)
1202 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1209 /* This next chunk of code tries to detect the case where you have
1210 two import libraries for the same DLL (specifically,
1211 symbolically linking libm.a and libc.a in cygwin to
1212 libcygwin.a). In those cases, it's possible for function
1213 thunks from the second implib to be used but without the
1214 head/tail objects, causing an improper import table. We detect
1215 those cases and rename the "other" import libraries to match
1216 the one the head/tail come from, so that the linker will sort
1217 things nicely and produce a valid import table. */
1219 LANG_FOR_EACH_INPUT_STATEMENT (is)
1221 if (is->the_bfd->my_archive)
1223 int idata2 = 0, reloc_count=0, is_imp = 0;
1226 /* See if this is an import library thunk. */
1227 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1229 if (strcmp (sec->name, ".idata\$2") == 0)
1231 if (CONST_STRNEQ (sec->name, ".idata\$"))
1233 reloc_count += sec->reloc_count;
1236 if (is_imp && !idata2 && reloc_count)
1238 /* It is, look for the reference to head and see if it's
1239 from our own library. */
1240 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1248 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1252 if (!bfd_generic_link_read_symbols (is->the_bfd))
1254 einfo (_("%B%F: could not read symbols: %E\n"),
1258 symbols = bfd_get_outsymbols (is->the_bfd);
1260 relocs = xmalloc ((size_t) relsize);
1261 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1266 einfo ("%X%P: unable to process relocs: %E\n");
1270 for (i = 0; i < nrelocs; i++)
1272 struct bfd_symbol *s;
1273 struct bfd_link_hash_entry * blhe;
1274 char *other_bfd_filename;
1277 s = (relocs[i]->sym_ptr_ptr)[0];
1279 if (s->flags & BSF_LOCAL)
1282 /* Thunk section with reloc to another bfd. */
1283 blhe = bfd_link_hash_lookup (link_info.hash,
1285 FALSE, FALSE, TRUE);
1288 || blhe->type != bfd_link_hash_defined)
1292 = blhe->u.def.section->owner->my_archive
1293 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1294 : bfd_get_filename (blhe->u.def.section->owner);
1296 if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
1297 other_bfd_filename) == 0)
1300 /* Rename this implib to match the other one. */
1301 n = xmalloc (strlen (other_bfd_filename) + 1);
1302 strcpy (n, other_bfd_filename);
1303 is->the_bfd->my_archive->filename = n;
1307 /* Note - we do not free the symbols,
1308 they are now cached in the BFD. */
1318 lang_input_statement_type *is2;
1319 lang_input_statement_type *is3;
1321 /* Careful - this is a shell script. Watch those dollar signs! */
1322 /* Microsoft import libraries have every member named the same,
1323 and not in the right order for us to link them correctly. We
1324 must detect these and rename the members so that they'll link
1325 correctly. There are three types of objects: the head, the
1326 thunks, and the sentinel(s). The head is easy; it's the one
1327 with idata2. We assume that the sentinels won't have relocs,
1328 and the thunks will. It's easier than checking the symbol
1329 table for external references. */
1330 LANG_FOR_EACH_INPUT_STATEMENT (is)
1332 if (is->the_bfd->my_archive)
1335 bfd *arch = is->the_bfd->my_archive;
1337 if (cur_arch != arch)
1343 is3 && is3->the_bfd->my_archive == arch;
1344 is3 = (lang_input_statement_type *) is3->next)
1346 /* A MS dynamic import library can also contain static
1347 members, so look for the first element with a .dll
1348 extension, and use that for the remainder of the
1350 pnt = strrchr (is3->the_bfd->filename, '.');
1351 if (pnt != NULL && strcmp (pnt, ".dll") == 0)
1359 /* OK, found one. Now look to see if the remaining
1360 (dynamic import) members use the same name. */
1362 is2 && is2->the_bfd->my_archive == arch;
1363 is2 = (lang_input_statement_type *) is2->next)
1365 /* Skip static members, ie anything with a .obj
1367 pnt = strrchr (is2->the_bfd->filename, '.');
1368 if (pnt != NULL && strcmp (pnt, ".obj") == 0)
1371 if (strcmp (is3->the_bfd->filename,
1372 is2->the_bfd->filename))
1381 /* This fragment might have come from an .obj file in a Microsoft
1382 import, and not an actual import record. If this is the case,
1383 then leave the filename alone. */
1384 pnt = strrchr (is->the_bfd->filename, '.');
1386 if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
1388 int idata2 = 0, reloc_count=0;
1390 char *new_name, seq;
1392 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1394 if (strcmp (sec->name, ".idata\$2") == 0)
1396 reloc_count += sec->reloc_count;
1399 if (idata2) /* .idata2 is the TOC */
1401 else if (reloc_count > 0) /* thunks */
1406 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1407 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1408 is->the_bfd->filename = new_name;
1410 new_name = xmalloc (strlen (is->filename) + 3);
1411 sprintf (new_name, "%s.%c", is->filename, seq);
1412 is->filename = new_name;
1419 /* The following chunk of code tries to identify jump stubs in
1420 import libraries which are dead code and eliminates them
1421 from the final link. For each exported symbol <sym>, there
1422 is a object file in the import library with a .text section
1423 and several .idata\$* sections. The .text section contains the
1424 symbol definition for <sym> which is a jump stub of the form
1425 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1426 for __imp_<sym> which is the address of the slot for <sym> in
1427 the import address table. When a symbol is imported explicitly
1428 using __declspec(dllimport) declaration, the compiler generates
1429 a reference to __imp_<sym> which directly resolves to the
1430 symbol in .idata\$5, in which case the jump stub code is not
1431 needed. The following code tries to identify jump stub sections
1432 in import libraries which are not referred to by anyone and
1433 marks them for exclusion from the final link. */
1434 LANG_FOR_EACH_INPUT_STATEMENT (is)
1436 if (is->the_bfd->my_archive)
1439 asection *sec, *stub_sec = NULL;
1441 /* See if this is an import library thunk. */
1442 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1444 if (strncmp (sec->name, ".idata\$", 7) == 0)
1446 /* The section containing the jmp stub has code
1448 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1452 if (is_imp && stub_sec)
1455 long nsyms, src_count;
1456 struct bfd_link_hash_entry * blhe;
1458 if (!bfd_generic_link_read_symbols (is->the_bfd))
1460 einfo (_("%B%F: could not read symbols: %E\n"),
1464 symbols = bfd_get_outsymbols (is->the_bfd);
1465 nsyms = bfd_get_symcount (is->the_bfd);
1467 for (src_count = 0; src_count < nsyms; src_count++)
1469 if (symbols[src_count]->section->id == stub_sec->id)
1471 /* This symbol belongs to the section containing
1473 blhe = bfd_link_hash_lookup (link_info.hash,
1474 symbols[src_count]->name,
1475 FALSE, FALSE, TRUE);
1476 /* If the symbol in the stub section has no other
1477 undefined references, exclude the stub section
1478 from the final link. */
1479 if (blhe && (blhe->type == bfd_link_hash_defined)
1480 && (blhe->u.undef.next == NULL))
1481 stub_sec->flags |= SEC_EXCLUDE;
1491 gld_${EMULATION_NAME}_before_allocation (void)
1493 #ifdef TARGET_IS_ppcpe
1494 /* Here we rummage through the found bfds to collect toc information. */
1496 LANG_FOR_EACH_INPUT_STATEMENT (is)
1498 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1500 /* xgettext:c-format */
1501 einfo (_("Errors encountered processing file %s\n"), is->filename);
1506 /* We have seen it all. Allocate it, and carry on. */
1507 ppc_allocate_toc_section (&link_info);
1508 #endif /* TARGET_IS_ppcpe */
1510 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1511 /* FIXME: we should be able to set the size of the interworking stub
1514 Here we rummage through the found bfds to collect glue
1515 information. FIXME: should this be based on a command line
1516 option? krk@cygnus.com. */
1518 LANG_FOR_EACH_INPUT_STATEMENT (is)
1520 if (! bfd_arm_process_before_allocation
1521 (is->the_bfd, & link_info, support_old_code))
1523 /* xgettext:c-format */
1524 einfo (_("Errors encountered processing file %s for interworking\n"),
1530 /* We have seen it all. Allocate it, and carry on. */
1531 bfd_arm_allocate_interworking_sections (& link_info);
1532 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1534 before_allocation_default ();
1538 /* This is called when an input file isn't recognized as a BFD. We
1539 check here for .DEF files and pull them in automatically. */
1542 saw_option (char *option)
1546 for (i = 0; init[i].ptr; i++)
1547 if (strcmp (init[i].symbol, option) == 0)
1548 return init[i].inited;
1551 #endif /* DLL_SUPPORT */
1554 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1557 const char *ext = entry->filename + strlen (entry->filename) - 4;
1559 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1561 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1565 int i, buflen=0, len;
1568 for (i = 0; i < pe_def_file->num_exports; i++)
1570 len = strlen (pe_def_file->exports[i].internal_name);
1571 if (buflen < len + 2)
1575 buf = xmalloc (buflen);
1577 for (i = 0; i < pe_def_file->num_exports; i++)
1579 struct bfd_link_hash_entry *h;
1581 sprintf (buf, "%s%s", U (""), pe_def_file->exports[i].internal_name);
1583 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1584 if (h == (struct bfd_link_hash_entry *) NULL)
1585 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1586 if (h->type == bfd_link_hash_new)
1588 h->type = bfd_link_hash_undefined;
1589 h->u.undef.abfd = NULL;
1590 bfd_link_add_undef (link_info.hash, h);
1595 /* def_file_print (stdout, pe_def_file); */
1596 if (pe_def_file->is_dll == 1)
1597 link_info.shared = 1;
1599 if (pe_def_file->base_address != (bfd_vma)(-1))
1602 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1603 = init[IMAGEBASEOFF].value
1604 = pe_def_file->base_address;
1605 init[IMAGEBASEOFF].inited = 1;
1606 if (image_base_statement)
1607 image_base_statement->exp = exp_assop ('=', "__image_base__",
1608 exp_intop (pe.ImageBase));
1611 if (pe_def_file->stack_reserve != -1
1612 && ! saw_option ("__size_of_stack_reserve__"))
1614 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1615 if (pe_def_file->stack_commit != -1)
1616 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1618 if (pe_def_file->heap_reserve != -1
1619 && ! saw_option ("__size_of_heap_reserve__"))
1621 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1622 if (pe_def_file->heap_commit != -1)
1623 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1633 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1636 #ifdef TARGET_IS_i386pe
1637 pe_dll_id_target ("pei-i386");
1639 #ifdef TARGET_IS_shpe
1640 pe_dll_id_target ("pei-shl");
1642 #ifdef TARGET_IS_mipspe
1643 pe_dll_id_target ("pei-mips");
1645 #ifdef TARGET_IS_armpe
1646 pe_dll_id_target ("pei-arm-little");
1648 #ifdef TARGET_IS_arm_epoc_pe
1649 pe_dll_id_target ("epoc-pei-arm-little");
1651 #ifdef TARGET_IS_arm_wince_pe
1652 pe_dll_id_target ("pei-arm-wince-little");
1654 if (pe_bfd_is_dll (entry->the_bfd))
1655 return pe_implied_import_dll (entry->filename);
1661 gld_${EMULATION_NAME}_finish (void)
1663 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1664 struct bfd_link_hash_entry * h;
1666 if (thumb_entry_symbol != NULL)
1668 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1669 FALSE, FALSE, TRUE);
1671 if (h != (struct bfd_link_hash_entry *) NULL
1672 && (h->type == bfd_link_hash_defined
1673 || h->type == bfd_link_hash_defweak)
1674 && h->u.def.section->output_section != NULL)
1676 static char buffer[32];
1679 /* Special procesing is required for a Thumb entry symbol. The
1680 bottom bit of its address must be set. */
1681 val = (h->u.def.value
1682 + bfd_get_section_vma (link_info.output_bfd,
1683 h->u.def.section->output_section)
1684 + h->u.def.section->output_offset);
1688 /* Now convert this value into a string and store it in entry_symbol
1689 where the lang_finish() function will pick it up. */
1693 sprintf_vma (buffer + 2, val);
1695 if (entry_symbol.name != NULL && entry_from_cmdline)
1696 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1697 thumb_entry_symbol, entry_symbol.name);
1698 entry_symbol.name = buffer;
1701 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
1703 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
1708 if (link_info.shared
1709 #if !defined(TARGET_IS_shpe) && !defined(TARGET_IS_mipspe)
1710 || (!link_info.relocatable && pe_def_file->num_exports != 0)
1714 pe_dll_fill_sections (link_info.output_bfd, &link_info);
1715 if (pe_implib_filename)
1716 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info);
1718 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1719 /* ARM doesn't need relocs. */
1722 pe_exe_fill_sections (link_info.output_bfd, &link_info);
1726 if (pe_out_def_filename)
1727 pe_dll_generate_def_file (pe_out_def_filename);
1728 #endif /* DLL_SUPPORT */
1730 /* I don't know where .idata gets set as code, but it shouldn't be. */
1732 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1736 asec->flags &= ~SEC_CODE;
1737 asec->flags |= SEC_DATA;
1743 /* Place an orphan section.
1745 We use this to put sections in a reasonable place in the file, and
1746 to ensure that they are aligned as required.
1748 We handle grouped sections here as well. A section named .foo\$nn
1749 goes into the output section .foo. All grouped sections are sorted
1752 Grouped sections for the default sections are handled by the
1753 default linker script using wildcards, and are sorted by
1756 static lang_output_section_statement_type *
1757 gld_${EMULATION_NAME}_place_orphan (asection *s,
1758 const char *secname,
1761 const char *orig_secname = secname;
1762 char *dollar = NULL;
1763 lang_output_section_statement_type *os;
1764 lang_statement_list_type add_child;
1765 lang_statement_union_type **pl;
1767 /* Look through the script to see where to place this section. */
1768 if (!link_info.relocatable
1769 && (dollar = strchr (secname, '\$')) != NULL)
1771 size_t len = dollar - secname;
1772 char *newname = xmalloc (len + 1);
1773 memcpy (newname, secname, len);
1774 newname[len] = '\0';
1778 lang_list_init (&add_child);
1781 if (constraint == 0)
1782 for (os = lang_output_section_find (secname);
1784 os = next_matching_output_section_statement (os, 0))
1786 /* If we don't match an existing output section, tell
1787 lang_insert_orphan to create a new output section. */
1788 constraint = SPECIAL;
1790 if (os->bfd_section != NULL
1791 && (os->bfd_section->flags == 0
1792 || ((s->flags ^ os->bfd_section->flags)
1793 & (SEC_LOAD | SEC_ALLOC)) == 0))
1795 /* We already have an output section statement with this
1796 name, and its bfd section has compatible flags.
1797 If the section already exists but does not have any flags set,
1798 then it has been created by the linker, probably as a result of
1799 a --section-start command line switch. */
1800 lang_add_section (&add_child, s, os);
1807 static struct orphan_save hold[] =
1810 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1813 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1816 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1822 enum orphan_save_index
1829 static int orphan_init_done = 0;
1830 struct orphan_save *place;
1831 lang_output_section_statement_type *after;
1832 etree_type *address;
1834 if (!orphan_init_done)
1836 struct orphan_save *ho;
1837 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1838 if (ho->name != NULL)
1840 ho->os = lang_output_section_find (ho->name);
1841 if (ho->os != NULL && ho->os->flags == 0)
1842 ho->os->flags = ho->flags;
1844 orphan_init_done = 1;
1847 /* Try to put the new output section in a reasonable place based
1848 on the section name and section flags. */
1851 if ((s->flags & SEC_ALLOC) == 0)
1853 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1854 place = &hold[orphan_bss];
1855 else if ((s->flags & SEC_READONLY) == 0)
1856 place = &hold[orphan_data];
1857 else if ((s->flags & SEC_CODE) == 0)
1858 place = &hold[orphan_rodata];
1860 place = &hold[orphan_text];
1865 if (place->os == NULL)
1866 place->os = lang_output_section_find (place->name);
1869 after = lang_output_section_find_by_flags (s, &place->os, NULL);
1871 /* *ABS* is always the first output section statement. */
1872 after = (&lang_output_section_statement.head
1873 ->output_section_statement);
1876 /* All sections in an executable must be aligned to a page boundary. */
1877 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
1878 os = lang_insert_orphan (s, secname, constraint, after, place, address,
1882 /* If the section name has a '\$', sort it with the other '\$'
1884 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
1886 lang_input_section_type *ls;
1889 if ((*pl)->header.type != lang_input_section_enum)
1892 ls = &(*pl)->input_section;
1894 lname = bfd_get_section_name (ls->section->owner, ls->section);
1895 if (strchr (lname, '\$') != NULL
1896 && (dollar == NULL || strcmp (orig_secname, lname) < 0))
1900 if (add_child.head != NULL)
1902 *add_child.tail = *pl;
1903 *pl = add_child.head;
1910 gld_${EMULATION_NAME}_open_dynamic_archive
1911 (const char *arch ATTRIBUTE_UNUSED,
1912 search_dirs_type *search,
1913 lang_input_statement_type *entry)
1917 const char * format;
1918 bfd_boolean use_prefix;
1922 /* Preferred explicit import library for dll's. */
1923 { "lib%s.dll.a", FALSE },
1924 /* Alternate explicit import library for dll's. */
1925 { "%s.dll.a", FALSE },
1926 /* "libfoo.a" could be either an import lib or a static lib.
1927 For backwards compatibility, libfoo.a needs to precede
1928 libfoo.dll and foo.dll in the search. */
1929 { "lib%s.a", FALSE },
1930 /* The 'native' spelling of an import lib name is "foo.lib". */
1931 { "%s.lib", FALSE },
1933 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
1934 { "%s%s.dll", TRUE },
1936 /* Try "libfoo.dll" (default preferred dll name). */
1937 { "lib%s.dll", FALSE },
1938 /* Finally try 'native' dll name "foo.dll". */
1939 { "%s.dll", FALSE },
1940 /* Note: If adding more formats to this table, make sure to check to
1941 see if their length is longer than libname_fmt[0].format, and if
1942 so, update the call to xmalloc() below. */
1945 static unsigned int format_max_len = 0;
1946 const char * filename;
1952 if (! entry->is_archive)
1955 filename = entry->filename;
1957 if (format_max_len == 0)
1958 /* We need to allow space in the memory that we are going to allocate
1959 for the characters in the format string. Since the format array is
1960 static we only need to calculate this information once. In theory
1961 this value could also be computed statically, but this introduces
1962 the possibility for a discrepancy and hence a possible memory
1963 corruption. The lengths we compute here will be too long because
1964 they will include any formating characters (%s) in the strings, but
1965 this will not matter. */
1966 for (i = 0; libname_fmt[i].format; i++)
1967 if (format_max_len < strlen (libname_fmt[i].format))
1968 format_max_len = strlen (libname_fmt[i].format);
1970 full_string = xmalloc (strlen (search->name)
1974 + (pe_dll_search_prefix
1975 ? strlen (pe_dll_search_prefix) : 0)
1977 /* Allow for the terminating NUL and for the path
1978 separator character that is inserted between
1979 search->name and the start of the format string. */
1982 sprintf (full_string, "%s/", search->name);
1983 base_string = full_string + strlen (full_string);
1985 for (i = 0; libname_fmt[i].format; i++)
1988 if (libname_fmt[i].use_prefix)
1990 if (!pe_dll_search_prefix)
1992 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
1996 sprintf (base_string, libname_fmt[i].format, filename);
1998 if (ldfile_try_open_bfd (full_string, entry))
2002 if (!libname_fmt[i].format)
2008 entry->filename = full_string;
2014 gld_${EMULATION_NAME}_find_potential_libraries
2015 (char *name, lang_input_statement_type *entry)
2017 return ldfile_open_file_search (name, entry, "", ".lib");
2021 gld_${EMULATION_NAME}_get_script (int *isfile)
2023 # Scripts compiled in.
2024 # sed commands to quote an ld script as a C string.
2025 sc="-f stringify.sed"
2031 if (link_info.relocatable && config.build_constructors)
2034 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2035 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
2036 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2037 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2038 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2039 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2040 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2041 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2042 echo ' ; else if (link_info.pei386_auto_import == 1) return' >> e${EMULATION_NAME}.c
2043 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
2045 echo ' ; else return' >> e${EMULATION_NAME}.c
2046 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2047 echo '; }' >> e${EMULATION_NAME}.c
2052 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2054 gld_${EMULATION_NAME}_before_parse,
2057 gld_${EMULATION_NAME}_after_parse,
2058 gld_${EMULATION_NAME}_after_open,
2059 after_allocation_default,
2060 set_output_arch_default,
2061 ldemul_default_target,
2062 gld_${EMULATION_NAME}_before_allocation,
2063 gld_${EMULATION_NAME}_get_script,
2064 "${EMULATION_NAME}",
2066 gld_${EMULATION_NAME}_finish,
2067 NULL, /* Create output section statements. */
2068 gld_${EMULATION_NAME}_open_dynamic_archive,
2069 gld_${EMULATION_NAME}_place_orphan,
2070 gld_${EMULATION_NAME}_set_symbols,
2071 NULL, /* parse_args */
2072 gld${EMULATION_NAME}_add_options,
2073 gld${EMULATION_NAME}_handle_option,
2074 gld_${EMULATION_NAME}_unrecognized_file,
2075 gld_${EMULATION_NAME}_list_options,
2076 gld_${EMULATION_NAME}_recognized_file,
2077 gld_${EMULATION_NAME}_find_potential_libraries,
2078 NULL /* new_vers_pattern. */