1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 if [ -z "$MACHINE" ]; then
6 OUTPUT_ARCH=${ARCH}:${MACHINE}
8 rm -f e${EMULATION_NAME}.c
9 (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
11 /* Copyright (C) 1995-2018 Free Software Foundation, Inc.
13 This file is part of the GNU Binutils.
15 This program is free software; you can redistribute it and/or modify
16 it under the terms of the GNU General Public License as published by
17 the Free Software Foundation; either version 3 of the License, or
18 (at your option) any later version.
20 This program is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with this program; if not, write to the Free Software
27 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
28 MA 02110-1301, USA. */
32 /* The original file generated returned different default scripts depending
33 on whether certain switches were set, but these switches pertain to the
34 Linux system and that particular version of coff. In the NT case, we
35 only determine if the subsystem is console or windows in order to select
36 the correct entry point by default. */
38 #define TARGET_IS_${EMULATION_NAME}
40 /* Do this before including bfd.h, so we prototype the right functions. */
42 #if defined(TARGET_IS_armpe) \
43 || defined(TARGET_IS_arm_epoc_pe) \
44 || defined(TARGET_IS_arm_wince_pe)
45 #define bfd_arm_allocate_interworking_sections \
46 bfd_${EMULATION_NAME}_allocate_interworking_sections
47 #define bfd_arm_get_bfd_for_interworking \
48 bfd_${EMULATION_NAME}_get_bfd_for_interworking
49 #define bfd_arm_process_before_allocation \
50 bfd_${EMULATION_NAME}_process_before_allocation
57 #include "libiberty.h"
58 #include "filenames.h"
69 #include "ldbuildid.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: These are BFD internal header files, and we should not be
79 #include "../bfd/libcoff.h"
80 #include "../bfd/libpei.h"
84 #include "safe-ctype.h"
86 /* Permit the emulation parameters to override the default section
87 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
88 it seem that include/coff/internal.h should not define
89 PE_DEF_SECTION_ALIGNMENT. */
90 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
91 #undef PE_DEF_SECTION_ALIGNMENT
92 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
95 #if defined(TARGET_IS_i386pe) \
96 || defined(TARGET_IS_shpe) \
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)
104 #define DEFAULT_PSEUDO_RELOC_VERSION 2
106 #define DEFAULT_PSEUDO_RELOC_VERSION 1
109 #if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
110 #define PE_DEF_SUBSYSTEM 3
112 #undef NT_EXE_IMAGE_BASE
113 #undef PE_DEF_SECTION_ALIGNMENT
114 #undef PE_DEF_FILE_ALIGNMENT
115 #define NT_EXE_IMAGE_BASE 0x00010000
117 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
118 #define PE_DEF_SECTION_ALIGNMENT 0x00001000
119 #define PE_DEF_SUBSYSTEM 9
121 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
122 #define PE_DEF_SUBSYSTEM 2
124 #define PE_DEF_FILE_ALIGNMENT 0x00000200
127 static struct internal_extra_pe_aouthdr pe;
129 static int pe_subsystem = ${SUBSYSTEM};
130 static flagword real_flags = 0;
131 static int support_old_code = 0;
132 static char * thumb_entry_symbol = NULL;
133 static lang_assignment_statement_type *image_base_statement = 0;
134 static unsigned short pe_dll_characteristics = 0;
135 static bfd_boolean insert_timestamp = TRUE;
136 static const char *emit_build_id;
139 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
140 static char *pe_out_def_filename = NULL;
141 static int pe_enable_auto_image_base = 0;
142 static unsigned long pe_auto_image_base = 0x61500000;
143 static char *pe_dll_search_prefix = NULL;
146 extern const char *output_filename;
148 static int is_underscoring (void)
151 if (pe_leading_underscore != -1)
152 return pe_leading_underscore;
153 if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
154 bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
158 pe_leading_underscore = (u != 0 ? 1 : 0);
159 return pe_leading_underscore;
163 gld_${EMULATION_NAME}_before_parse (void)
166 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
167 output_filename = "${EXECUTABLE_NAME:-a.exe}";
169 input_flags.dynamic = TRUE;
170 config.has_shared = 1;
173 # Cygwin no longer wants these noisy warnings. Other PE
174 # targets might like to consider adding themselves here.
175 # See also the mail thread starting here for the reason why
176 # merge_rdata defaults to 0 for cygwin:
177 # http://cygwin.com/ml/cygwin-apps/2013-04/msg00187.html
180 default_auto_import=1
181 default_merge_rdata=0
183 i[3-7]86-*-mingw* | x86_64-*-mingw*)
184 default_auto_import=1
185 default_merge_rdata=0
188 default_auto_import=-1
189 default_merge_rdata=1
194 link_info.pei386_auto_import = ${default_auto_import};
195 /* Use by default version. */
196 link_info.pei386_runtime_pseudo_reloc = DEFAULT_PSEUDO_RELOC_VERSION;
200 /* Indicates if RDATA shall be merged into DATA when pseudo-relocation
201 version 2 is used and auto-import is enabled. */
202 #define MERGE_RDATA_V2 ${default_merge_rdata}
204 /* PE format extra command line options. */
206 /* Used for setting flags in the PE header. */
207 #define OPTION_BASE_FILE (300 + 1)
208 #define OPTION_DLL (OPTION_BASE_FILE + 1)
209 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
210 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
211 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
212 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
213 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
214 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
215 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
216 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
217 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
218 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
219 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
220 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
221 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
222 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
223 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
224 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
225 #define OPTION_EXCLUDE_ALL_SYMBOLS (OPTION_EXCLUDE_SYMBOLS + 1)
226 #define OPTION_KILL_ATS (OPTION_EXCLUDE_ALL_SYMBOLS + 1)
227 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
228 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
229 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
230 #define OPTION_THUMB_ENTRY (OPTION_DISABLE_STDCALL_FIXUP + 1)
231 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
232 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
233 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
234 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
235 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
236 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
237 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
238 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
239 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
240 #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
241 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
242 (OPTION_EXCLUDE_LIBS + 1)
243 #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
244 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
245 #define OPTION_LARGE_ADDRESS_AWARE (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
246 #define OPTION_DISABLE_LARGE_ADDRESS_AWARE \
247 (OPTION_LARGE_ADDRESS_AWARE + 1)
248 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
249 (OPTION_DISABLE_LARGE_ADDRESS_AWARE + 1)
250 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
251 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
252 #define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
253 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
254 #define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
255 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
256 #define OPTION_NO_LEADING_UNDERSCORE (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
257 #define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 1)
258 #define OPTION_ENABLE_LONG_SECTION_NAMES \
259 (OPTION_LEADING_UNDERSCORE + 1)
260 #define OPTION_DISABLE_LONG_SECTION_NAMES \
261 (OPTION_ENABLE_LONG_SECTION_NAMES + 1)
262 /* DLLCharacteristics flags. */
263 #define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1)
264 #define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1)
265 #define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1)
266 #define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1)
267 #define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1)
268 #define OPTION_NO_BIND (OPTION_NO_SEH + 1)
269 #define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1)
270 #define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1)
272 #define OPTION_INSERT_TIMESTAMP (OPTION_TERMINAL_SERVER_AWARE + 1)
273 #define OPTION_NO_INSERT_TIMESTAMP (OPTION_INSERT_TIMESTAMP + 1)
274 #define OPTION_BUILD_ID (OPTION_NO_INSERT_TIMESTAMP + 1)
277 gld${EMULATION_NAME}_add_options
278 (int ns ATTRIBUTE_UNUSED,
279 char **shortopts ATTRIBUTE_UNUSED,
281 struct option **longopts,
282 int nrl ATTRIBUTE_UNUSED,
283 struct option **really_longopts ATTRIBUTE_UNUSED)
285 static const struct option xtra_long[] =
288 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
289 {"dll", no_argument, NULL, OPTION_DLL},
290 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
291 {"heap", required_argument, NULL, OPTION_HEAP},
292 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
293 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
294 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
295 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
296 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
297 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
298 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
299 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
300 {"stack", required_argument, NULL, OPTION_STACK},
301 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
302 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
303 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
304 {"use-nul-prefixed-import-tables", no_argument, NULL,
305 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
306 {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
307 {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
308 {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
309 {"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP},
311 /* getopt allows abbreviations, so we do this to stop it
312 from treating -o as an abbreviation for this option. */
313 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
314 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
315 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
316 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
317 {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
318 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
319 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
320 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
321 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
322 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
323 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
324 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
325 /* getopt() allows abbreviations, so we do this to stop it from
326 treating -c as an abbreviation for these --compat-implib. */
327 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
328 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
329 {"enable-auto-image-base", optional_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
330 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
331 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
332 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
333 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
334 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
335 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
336 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
337 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
338 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
339 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
341 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
342 {"disable-large-address-aware", no_argument, NULL, OPTION_DISABLE_LARGE_ADDRESS_AWARE},
343 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
344 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
345 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
346 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
347 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
348 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
349 {"no-seh", no_argument, NULL, OPTION_NO_SEH},
350 {"no-bind", no_argument, NULL, OPTION_NO_BIND},
351 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
352 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
353 {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
354 {NULL, no_argument, NULL, 0}
358 = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
359 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
362 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
363 parameters which may be input from the command line. */
372 /* FALSE for an assembly level symbol and TRUE for a C visible symbol.
373 C visible symbols can be prefixed by underscore dependent to target's
375 bfd_boolean is_c_symbol;
378 /* Get symbol name dependent to kind and C visible state of
380 #define GET_INIT_SYMBOL_NAME(IDX) \
381 (init[(IDX)].symbol \
382 + ((!init[(IDX)].is_c_symbol || is_underscoring () != 0) ? 0 : 1))
384 /* Decorates the C visible symbol by underscore, if target requires. */
386 ((is_underscoring () == 0) ? CSTR : "_" CSTR)
388 #define D(field,symbol,def,usc) {&pe.field, sizeof (pe.field), def, symbol, 0, usc}
390 static definfo init[] =
392 /* imagebase must be first */
393 #define IMAGEBASEOFF 0
394 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE),
396 {&dll, sizeof(dll), 0, "__dll__", 0, FALSE},
397 #define MSIMAGEBASEOFF 2
398 D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE),
399 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE),
400 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE),
401 D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE),
402 D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE),
403 D(MajorImageVersion,"__major_image_version__", 1, FALSE),
404 D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
405 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
406 D(MajorSubsystemVersion,"__major_subsystem_version__", 3, FALSE),
408 D(MajorSubsystemVersion,"__major_subsystem_version__", 4, FALSE),
410 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0, FALSE),
411 D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE),
412 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE),
413 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE),
414 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE),
415 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE),
416 D(LoaderFlags,"__loader_flags__", 0x0, FALSE),
417 D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE),
418 { NULL, 0, 0, NULL, 0 , FALSE}
423 gld_${EMULATION_NAME}_list_options (FILE *file)
425 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
426 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
427 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
428 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
429 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
430 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
431 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
432 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
433 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
434 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
435 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
436 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
437 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
438 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
439 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
440 fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n"));
441 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
442 fprintf (file, _(" --[no-]insert-timestamp Use a real timestamp rather than zero (default).\n"));
443 fprintf (file, _(" This makes binaries non-deterministic\n"));
445 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
446 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
447 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
448 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
449 fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n"));
450 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
451 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
452 fprintf (file, _(" Exclude objects, archive members from auto\n"));
453 fprintf (file, _(" export, place into import library instead.\n"));
454 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
455 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
456 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
457 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports\n"));
458 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
459 create __imp_<SYMBOL> as well.\n"));
460 fprintf (file, _(" --enable-auto-image-base[=<address>] Automatically choose image base for DLLs\n\
461 (optionally starting with address) unless\n\
462 specifically set with --image-base\n"));
463 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
464 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
465 an importlib, use <string><basename>.dll\n\
466 in preference to lib<basename>.dll \n"));
467 fprintf (file, _(" --enable-auto-import Do sophisticated linking of _sym to\n\
468 __imp_sym for DATA references\n"));
469 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
470 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
471 adding pseudo-relocations resolved at\n\
473 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
474 auto-imported DATA.\n"));
475 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
476 or linking to DLLs (esp. auto-import)\n"));
478 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
479 greater than 2 gigabytes\n"));
480 fprintf (file, _(" --disable-large-address-aware Executable does not support virtual\n\
481 addresses greater than 2 gigabytes\n"));
482 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
483 executable image files\n"));
484 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
485 in object files\n"));
486 fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\
487 address space layout randomization (ASLR)\n"));
488 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
489 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
490 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
491 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
492 be called in this image\n"));
493 fprintf (file, _(" --no-bind Do not bind this image\n"));
494 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
495 fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
496 fprintf (file, _(" --build-id[=STYLE] Generate build ID\n"));
501 set_pe_name (char *name, long val)
506 /* Find the name and set it. */
507 for (i = 0; init[i].ptr; i++)
509 if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
513 if (strcmp (name,"__image_base__") == 0)
514 set_pe_name (U ("__ImageBase"), val);
522 set_entry_point (void)
525 const char *initial_symbol_char;
535 { 1, "NtProcessStartup" },
536 { 2, "WinMainCRTStartup" },
537 { 3, "mainCRTStartup" },
538 { 7, "__PosixProcessStartup"},
539 { 9, "WinMainCRTStartup" },
540 {14, "mainCRTStartup" },
544 /* Entry point name for arbitrary subsystem numbers. */
545 static const char default_entry[] = "mainCRTStartup";
547 if (bfd_link_pic (&link_info) || dll)
549 #if defined (TARGET_IS_i386pe)
550 entry = "DllMainCRTStartup@12";
552 entry = "DllMainCRTStartup";
557 for (i = 0; v[i].entry; i++)
558 if (v[i].value == pe_subsystem)
561 /* If no match, use the default. */
562 if (v[i].entry != NULL)
565 entry = default_entry;
568 initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
570 if (*initial_symbol_char != '\0')
574 /* lang_default_entry expects its argument to be permanently
575 allocated, so we don't free this string. */
576 alc_entry = xmalloc (strlen (initial_symbol_char)
579 strcpy (alc_entry, initial_symbol_char);
580 strcat (alc_entry, entry);
584 lang_default_entry (entry);
588 set_pe_subsystem (void)
594 unsigned long temp_subsystem;
611 /* Check for the presence of a version number. */
612 sver = strchr (optarg, ':');
614 len = strlen (optarg);
618 set_pe_name ("__major_subsystem_version__",
619 strtoul (sver + 1, &end, 0));
621 set_pe_name ("__minor_subsystem_version__",
622 strtoul (end + 1, &end, 0));
624 einfo (_("%P: warning: bad version number in -subsystem option\n"));
627 /* Check for numeric subsystem. */
628 temp_subsystem = strtoul (optarg, & end, 0);
629 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
631 /* Search list for a numeric match to use its entry point. */
632 for (i = 0; v[i].name; i++)
633 if (v[i].value == (int) temp_subsystem)
636 /* Use this subsystem. */
637 pe_subsystem = (int) temp_subsystem;
641 /* Search for subsystem by name. */
642 for (i = 0; v[i].name; i++)
643 if (strncmp (optarg, v[i].name, len) == 0
644 && v[i].name[len] == '\0')
647 if (v[i].name == NULL)
649 einfo (_("%F%P: invalid subsystem type %s\n"), optarg);
653 pe_subsystem = v[i].value;
656 set_pe_name ("__subsystem__", pe_subsystem);
663 set_pe_value (char *name)
667 set_pe_name (name, strtoul (optarg, &end, 0));
670 einfo (_("%F%P: invalid hex number for PE parameter '%s'\n"), optarg);
677 set_pe_stack_heap (char *resname, char *comname)
679 set_pe_value (resname);
684 set_pe_value (comname);
687 einfo (_("%F%P: strange hex info for PE parameter '%s'\n"), optarg);
690 #define DEFAULT_BUILD_ID_STYLE "md5"
693 gld${EMULATION_NAME}_handle_option (int optc)
700 case OPTION_BASE_FILE:
701 link_info.base_file = fopen (optarg, FOPEN_WB);
702 if (link_info.base_file == NULL)
703 einfo (_("%F%P: cannot open base file %s\n"), optarg);
708 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
711 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
713 case OPTION_SUBSYSTEM:
716 case OPTION_MAJOR_OS_VERSION:
717 set_pe_value ("__major_os_version__");
719 case OPTION_MINOR_OS_VERSION:
720 set_pe_value ("__minor_os_version__");
722 case OPTION_MAJOR_SUBSYSTEM_VERSION:
723 set_pe_value ("__major_subsystem_version__");
725 case OPTION_MINOR_SUBSYSTEM_VERSION:
726 set_pe_value ("__minor_subsystem_version__");
728 case OPTION_MAJOR_IMAGE_VERSION:
729 set_pe_value ("__major_image_version__");
731 case OPTION_MINOR_IMAGE_VERSION:
732 set_pe_value ("__minor_image_version__");
734 case OPTION_FILE_ALIGNMENT:
735 set_pe_value ("__file_alignment__");
737 case OPTION_SECTION_ALIGNMENT:
738 set_pe_value ("__section_alignment__");
741 set_pe_name ("__dll__", 1);
743 case OPTION_IMAGE_BASE:
744 set_pe_value ("__image_base__");
746 case OPTION_SUPPORT_OLD_CODE:
747 support_old_code = 1;
749 case OPTION_THUMB_ENTRY:
750 thumb_entry_symbol = optarg;
752 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
753 pe_use_nul_prefixed_import_tables = TRUE;
755 case OPTION_NO_LEADING_UNDERSCORE:
756 pe_leading_underscore = 0;
758 case OPTION_LEADING_UNDERSCORE:
759 pe_leading_underscore = 1;
761 case OPTION_INSERT_TIMESTAMP:
762 insert_timestamp = TRUE;
764 case OPTION_NO_INSERT_TIMESTAMP:
765 insert_timestamp = FALSE;
769 pe_out_def_filename = xstrdup (optarg);
771 case OPTION_EXPORT_ALL:
772 pe_dll_export_everything = 1;
774 case OPTION_EXCLUDE_SYMBOLS:
775 pe_dll_add_excludes (optarg, EXCLUDESYMS);
777 case OPTION_EXCLUDE_ALL_SYMBOLS:
778 pe_dll_exclude_all_symbols = 1;
780 case OPTION_EXCLUDE_LIBS:
781 pe_dll_add_excludes (optarg, EXCLUDELIBS);
783 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
784 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
786 case OPTION_KILL_ATS:
789 case OPTION_STDCALL_ALIASES:
790 pe_dll_stdcall_aliases = 1;
792 case OPTION_ENABLE_STDCALL_FIXUP:
793 pe_enable_stdcall_fixup = 1;
795 case OPTION_DISABLE_STDCALL_FIXUP:
796 pe_enable_stdcall_fixup = 0;
798 case OPTION_WARN_DUPLICATE_EXPORTS:
799 pe_dll_warn_dup_exports = 1;
801 case OPTION_IMP_COMPAT:
802 pe_dll_compat_implib = 1;
804 case OPTION_ENABLE_AUTO_IMAGE_BASE:
805 pe_enable_auto_image_base = 1;
806 if (optarg && *optarg)
809 pe_auto_image_base = strtoul (optarg, &end, 0);
810 /* XXX should check that we actually parsed something */
813 case OPTION_DISABLE_AUTO_IMAGE_BASE:
814 pe_enable_auto_image_base = 0;
816 case OPTION_DLL_SEARCH_PREFIX:
817 pe_dll_search_prefix = xstrdup (optarg);
819 case OPTION_NO_DEFAULT_EXCLUDES:
820 pe_dll_do_default_excludes = 0;
822 case OPTION_DLL_ENABLE_AUTO_IMPORT:
823 link_info.pei386_auto_import = 1;
825 case OPTION_DLL_DISABLE_AUTO_IMPORT:
826 link_info.pei386_auto_import = 0;
828 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
829 link_info.pei386_runtime_pseudo_reloc =
830 DEFAULT_PSEUDO_RELOC_VERSION;
832 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
833 link_info.pei386_runtime_pseudo_reloc = 1;
835 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
836 link_info.pei386_runtime_pseudo_reloc = 2;
838 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
839 link_info.pei386_runtime_pseudo_reloc = 0;
841 case OPTION_ENABLE_EXTRA_PE_DEBUG:
842 pe_dll_extra_pe_debug = 1;
845 case OPTION_LARGE_ADDRESS_AWARE:
846 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
848 case OPTION_DISABLE_LARGE_ADDRESS_AWARE:
849 real_flags &= ~ IMAGE_FILE_LARGE_ADDRESS_AWARE;
851 case OPTION_ENABLE_LONG_SECTION_NAMES:
852 pe_use_coff_long_section_names = 1;
854 case OPTION_DISABLE_LONG_SECTION_NAMES:
855 pe_use_coff_long_section_names = 0;
857 /* Get DLLCharacteristics bits */
858 case OPTION_DYNAMIC_BASE:
859 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
861 case OPTION_FORCE_INTEGRITY:
862 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
864 case OPTION_NX_COMPAT:
865 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
867 case OPTION_NO_ISOLATION:
868 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
871 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
874 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
876 case OPTION_WDM_DRIVER:
877 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
879 case OPTION_TERMINAL_SERVER_AWARE:
880 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
882 case OPTION_BUILD_ID:
883 if (emit_build_id != NULL)
885 free ((char *) emit_build_id);
886 emit_build_id = NULL;
889 optarg = DEFAULT_BUILD_ID_STYLE;
890 if (strcmp (optarg, "none"))
891 emit_build_id = xstrdup (optarg);
895 /* Set DLLCharacteristics bits */
896 set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
904 strhash (const char *str)
906 const unsigned char *s;
913 s = (const unsigned char *) str;
914 while ((c = *s++) != '\0')
916 hash += c + (c << 17);
920 hash += len + (len << 17);
926 /* Use the output file to create a image base for relocatable DLLs. */
929 compute_dll_image_base (const char *ofile)
931 unsigned long hash = strhash (ofile);
932 return pe_auto_image_base + ((hash << 16) & 0x0FFC0000);
936 /* Assign values to the special symbols before the linker script is
940 gld_${EMULATION_NAME}_set_symbols (void)
942 /* Run through and invent symbols for all the
943 names and insert the defaults. */
948 if (!init[IMAGEBASEOFF].inited)
950 if (bfd_link_relocatable (&link_info))
951 init[IMAGEBASEOFF].value = 0;
952 else if (init[DLLOFF].value || bfd_link_dll (&link_info))
955 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base
956 ? compute_dll_image_base (output_filename)
957 : NT_DLL_IMAGE_BASE);
959 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
963 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
964 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
967 /* Don't do any symbol assignments if this is a relocatable link. */
968 if (bfd_link_relocatable (&link_info))
971 /* Glue the assignments into the abs section. */
972 push_stat_ptr (&abs_output_section->children);
974 for (j = 0; init[j].ptr; j++)
976 long val = init[j].value;
977 lang_assignment_statement_type *rv;
979 rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j),
980 exp_intop (val), FALSE));
981 if (init[j].size == sizeof (short))
982 *(short *) init[j].ptr = val;
983 else if (init[j].size == sizeof (int))
984 *(int *) init[j].ptr = val;
985 else if (init[j].size == sizeof (long))
986 *(long *) init[j].ptr = val;
987 /* This might be a long long or other special type. */
988 else if (init[j].size == sizeof (bfd_vma))
989 *(bfd_vma *) init[j].ptr = val;
991 if (j == IMAGEBASEOFF)
992 image_base_statement = rv;
994 /* Restore the pointer. */
997 if (pe.FileAlignment > pe.SectionAlignment)
999 einfo (_("%P: warning, file alignment > section alignment\n"));
1003 /* This is called after the linker script and the command line options
1007 gld_${EMULATION_NAME}_after_parse (void)
1009 /* PR ld/6744: Warn the user if they have used an ELF-only
1010 option hoping it will work on PE. */
1011 if (link_info.export_dynamic)
1012 einfo (_("%P: warning: --export-dynamic is not supported for PE "
1013 "targets, did you mean --export-all-symbols?\n"));
1017 after_parse_default ();
1021 static struct bfd_link_hash_entry *pe_undef_found_sym;
1024 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
1028 const char *hs = h->root.string;
1030 sl = strlen (string);
1031 if (h->type == bfd_link_hash_defined
1032 && ((*hs == '@' && *string == '_'
1033 && strncmp (hs + 1, string + 1, sl - 1) == 0)
1034 || strncmp (hs, string, sl) == 0)
1035 && h->root.string[sl] == '@')
1037 pe_undef_found_sym = h;
1043 /* Change UNDEF to a defined symbol, taking data from SYM. */
1046 change_undef (struct bfd_link_hash_entry * undef,
1047 struct bfd_link_hash_entry * sym)
1049 static bfd_boolean gave_warning_message = FALSE;
1051 undef->type = bfd_link_hash_defined;
1052 undef->u.def.value = sym->u.def.value;
1053 undef->u.def.section = sym->u.def.section;
1055 if (pe_enable_stdcall_fixup == -1)
1057 einfo (_("%P: warning: resolving %s by linking to %s\n"),
1058 undef->root.string, sym->root.string);
1060 if (! gave_warning_message)
1062 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1063 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1064 gave_warning_message = TRUE;
1068 /* PR 19803: Make sure that the linked symbol is not garbage collected. */
1069 lang_add_gc_name (sym->root.string);
1073 pe_fixup_stdcalls (void)
1075 struct bfd_link_hash_entry *undef, *sym;
1077 if (pe_dll_extra_pe_debug)
1078 printf ("%s\n", __FUNCTION__);
1080 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1081 if (undef->type == bfd_link_hash_undefined)
1083 const char * name = undef->root.string;
1085 int lead_at = (*name == '@');
1088 at = strchr (name + 1, '@');
1090 at = strchr (name, '@');
1094 /* The symbol is a stdcall symbol, so let's look for a
1095 cdecl symbol with the same name and resolve to that. */
1096 char *cname = xstrdup (name);
1101 * strchr (cname, '@') = 0;
1102 sym = bfd_link_hash_lookup (link_info.hash, cname, FALSE, FALSE, TRUE);
1104 if (sym && sym->type == bfd_link_hash_defined)
1105 change_undef (undef, sym);
1109 /* The symbol is a cdecl symbol, so we look for stdcall
1110 symbols - which means scanning the whole symbol table. */
1111 pe_undef_found_sym = NULL;
1112 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
1114 if (pe_undef_found_sym)
1115 change_undef (undef, pe_undef_found_sym);
1121 make_import_fixup (arelent *rel, asection *s, char *name, const char *symname)
1123 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1127 if (pe_dll_extra_pe_debug)
1128 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1129 (unsigned long) rel->address, (long) rel->addend);
1131 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
1132 einfo (_("%P: %C: cannot get section contents - auto-import exception\n"),
1133 s->owner, s, rel->address);
1135 _addend = bfd_get_32 (s->owner, addend);
1136 pe_create_import_fixup (rel, s, _addend, name, symname);
1140 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1142 printf ("+%s\n", h->string);
1146 #endif /* DLL_SUPPORT */
1149 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1151 int *found = (int *) obj;
1152 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1157 pecoff_checksum_contents (bfd *abfd,
1158 void (*process) (const void *, size_t, void *),
1161 file_ptr filepos = (file_ptr) 0;
1168 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
1171 status = bfd_bread (&b, (bfd_size_type) 1, abfd);
1177 (*process) (&b, 1, arg);
1185 write_build_id (bfd *abfd)
1187 struct pe_tdata *t = pe_data (abfd);
1189 struct bfd_link_order *link_order = NULL;
1190 unsigned char *contents;
1192 bfd_size_type build_id_size;
1193 unsigned char *build_id;
1195 /* Find the section the .buildid output section has been merged info. */
1196 for (asec = abfd->sections; asec != NULL; asec = asec->next)
1198 struct bfd_link_order *l = NULL;
1199 for (l = asec->map_head.link_order; l != NULL; l = l->next)
1201 if (l->type == bfd_indirect_link_order)
1203 if (l->u.indirect.section == t->build_id.sec)
1217 einfo (_("%P: warning: .buildid section discarded,"
1218 " --build-id ignored\n"));
1222 if (t->build_id.sec->contents == NULL)
1223 t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
1224 contents = t->build_id.sec->contents;
1225 size = t->build_id.sec->size;
1227 build_id_size = compute_build_id_size (t->build_id.style);
1228 build_id = xmalloc (build_id_size);
1229 generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
1231 bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
1233 /* Construct a debug directory entry which points to an immediately following CodeView record. */
1234 struct internal_IMAGE_DEBUG_DIRECTORY idd;
1235 idd.Characteristics = 0;
1236 idd.TimeDateStamp = 0;
1237 idd.MajorVersion = 0;
1238 idd.MinorVersion = 0;
1239 idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
1240 idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
1241 idd.AddressOfRawData = asec->vma - ib + link_order->offset
1242 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1243 idd.PointerToRawData = asec->filepos + link_order->offset
1244 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1246 struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
1247 _bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
1249 /* Write the debug directory entry. */
1250 if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
1253 if (bfd_bwrite (contents, size, abfd) != size)
1256 /* Construct the CodeView record. */
1257 CODEVIEW_INFO cvinfo;
1258 cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
1261 /* Zero pad or truncate the generated build_id to fit in the CodeView record. */
1262 memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
1263 memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
1264 ? CV_INFO_SIGNATURE_LENGTH : build_id_size);
1268 /* Write the codeview record. */
1269 if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
1272 /* Record the location of the debug directory in the data directory. */
1273 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
1274 = asec->vma - ib + link_order->offset;
1275 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
1276 = sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1281 /* Make .buildid section, and set up coff_tdata->build_id. */
1283 setup_build_id (bfd *ibfd)
1288 if (!validate_build_id_style (emit_build_id))
1290 einfo (_("%P: warning: unrecognized --build-id style ignored\n"));
1294 flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
1295 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
1296 s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
1299 struct pe_tdata *t = pe_data (link_info.output_bfd);
1300 t->build_id.after_write_object_contents = &write_build_id;
1301 t->build_id.style = emit_build_id;
1302 t->build_id.sec = s;
1304 /* Section is a fixed size:
1305 One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
1306 pointing at a CV_INFO_PDB70 record containing the build-id, with a
1307 null byte for PdbFileName. */
1308 s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
1309 + sizeof (CV_INFO_PDB70) + 1;
1314 einfo (_("%P: warning: cannot create .buildid section,"
1315 " --build-id ignored\n"));
1320 gld_${EMULATION_NAME}_after_open (void)
1322 after_open_default ();
1325 if (pe_dll_extra_pe_debug)
1328 struct bfd_link_hash_entry *sym;
1330 printf ("%s()\n", __FUNCTION__);
1332 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1333 printf ("-%s\n", sym->root.string);
1334 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1336 for (a = link_info.input_bfds; a; a = a->link.next)
1337 printf ("*%s\n",a->filename);
1341 if (emit_build_id != NULL)
1345 /* Find a COFF input. */
1346 for (abfd = link_info.input_bfds;
1347 abfd != (bfd *) NULL; abfd = abfd->link.next)
1348 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
1351 /* If there are no COFF input files do not try to
1352 add a build-id section. */
1354 || !setup_build_id (abfd))
1356 free ((char *) emit_build_id);
1357 emit_build_id = NULL;
1361 /* Pass the wacky PE command line options into the output bfd.
1362 FIXME: This should be done via a function, rather than by
1363 including an internal BFD header. */
1365 if (coff_data (link_info.output_bfd) == NULL
1366 || coff_data (link_info.output_bfd)->pe == 0)
1367 einfo (_("%F%P: cannot perform PE operations on non PE output file '%pB'\n"),
1368 link_info.output_bfd);
1370 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1371 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1372 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1373 pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
1375 /* At this point we must decide whether to use long section names
1376 in the output or not. If the user hasn't explicitly specified
1377 on the command line, we leave it to the default for the format
1378 (object files yes, image files no), except if there is debug
1379 information present; GDB relies on the long section names to
1380 find it, so enable it in that case. */
1381 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1383 if (bfd_link_relocatable (&link_info))
1384 pe_use_coff_long_section_names = 1;
1387 /* Iterate over all sections of all input BFDs, checking
1388 for any that begin 'debug_' and are long names. */
1389 LANG_FOR_EACH_INPUT_STATEMENT (is)
1391 int found_debug = 0;
1393 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1396 pe_use_coff_long_section_names = 1;
1403 pe_output_file_set_long_section_names (link_info.output_bfd);
1406 pe_process_import_defs (link_info.output_bfd, &link_info);
1408 if (link_info.pei386_auto_import) /* -1=warn or 1=enable */
1409 pe_find_data_imports (U ("_head_"), make_import_fixup);
1411 /* The implementation of the feature is rather dumb and would cause the
1412 compilation time to go through the roof if there are many undefined
1413 symbols in the link, so it needs to be run after auto-import. */
1414 if (pe_enable_stdcall_fixup) /* -1=warn or 1=enable */
1415 pe_fixup_stdcalls ();
1417 #if defined (TARGET_IS_i386pe) \
1418 || defined (TARGET_IS_armpe) \
1419 || defined (TARGET_IS_arm_epoc_pe) \
1420 || defined (TARGET_IS_arm_wince_pe)
1421 if (!bfd_link_relocatable (&link_info))
1422 pe_dll_build_sections (link_info.output_bfd, &link_info);
1424 if (bfd_link_pic (&link_info))
1425 pe_dll_build_sections (link_info.output_bfd, &link_info);
1427 pe_exe_build_sections (link_info.output_bfd, &link_info);
1429 #endif /* DLL_SUPPORT */
1431 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1432 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1434 /* The arm backend needs special fields in the output hash structure.
1435 These will only be created if the output format is an arm format,
1436 hence we do not support linking and changing output formats at the
1437 same time. Use a link followed by objcopy to change output formats. */
1438 einfo (_("%F%P: error: cannot change output format "
1439 "whilst linking %s binaries\n"), "ARM");
1443 /* Find a BFD that can hold the interworking stubs. */
1444 LANG_FOR_EACH_INPUT_STATEMENT (is)
1446 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1453 /* This next chunk of code tries to detect the case where you have
1454 two import libraries for the same DLL (specifically,
1455 symbolically linking libm.a and libc.a in cygwin to
1456 libcygwin.a). In those cases, it's possible for function
1457 thunks from the second implib to be used but without the
1458 head/tail objects, causing an improper import table. We detect
1459 those cases and rename the "other" import libraries to match
1460 the one the head/tail come from, so that the linker will sort
1461 things nicely and produce a valid import table. */
1463 LANG_FOR_EACH_INPUT_STATEMENT (is)
1465 if (is->the_bfd->my_archive)
1467 int idata2 = 0, reloc_count=0, is_imp = 0;
1470 /* See if this is an import library thunk. */
1471 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1473 if (strcmp (sec->name, ".idata\$2") == 0)
1475 if (CONST_STRNEQ (sec->name, ".idata\$"))
1477 reloc_count += sec->reloc_count;
1480 if (is_imp && !idata2 && reloc_count)
1482 /* It is, look for the reference to head and see if it's
1483 from our own library. */
1484 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1492 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1496 if (!bfd_generic_link_read_symbols (is->the_bfd))
1498 einfo (_("%F%P: %pB: could not read symbols: %E\n"),
1502 symbols = bfd_get_outsymbols (is->the_bfd);
1504 relocs = xmalloc ((size_t) relsize);
1505 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1510 einfo (_("%X%P: unable to process relocs: %E\n"));
1514 for (i = 0; i < nrelocs; i++)
1516 struct bfd_symbol *s;
1517 struct bfd_link_hash_entry * blhe;
1518 char *other_bfd_filename;
1521 s = (relocs[i]->sym_ptr_ptr)[0];
1523 if (s->flags & BSF_LOCAL)
1526 /* Thunk section with reloc to another bfd. */
1527 blhe = bfd_link_hash_lookup (link_info.hash,
1529 FALSE, FALSE, TRUE);
1532 || blhe->type != bfd_link_hash_defined)
1536 = blhe->u.def.section->owner->my_archive
1537 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1538 : bfd_get_filename (blhe->u.def.section->owner);
1540 if (filename_cmp (bfd_get_filename
1541 (is->the_bfd->my_archive),
1542 other_bfd_filename) == 0)
1545 /* Rename this implib to match the other one. */
1546 n = xmalloc (strlen (other_bfd_filename) + 1);
1547 strcpy (n, other_bfd_filename);
1548 is->the_bfd->my_archive->filename = n;
1552 /* Note - we do not free the symbols,
1553 they are now cached in the BFD. */
1563 lang_input_statement_type *is2;
1564 lang_input_statement_type *is3;
1566 /* Careful - this is a shell script. Watch those dollar signs! */
1567 /* Microsoft import libraries have every member named the same,
1568 and not in the right order for us to link them correctly. We
1569 must detect these and rename the members so that they'll link
1570 correctly. There are three types of objects: the head, the
1571 thunks, and the sentinel(s). The head is easy; it's the one
1572 with idata2. We assume that the sentinels won't have relocs,
1573 and the thunks will. It's easier than checking the symbol
1574 table for external references. */
1575 LANG_FOR_EACH_INPUT_STATEMENT (is)
1577 if (is->the_bfd->my_archive)
1580 bfd *arch = is->the_bfd->my_archive;
1582 if (cur_arch != arch)
1588 is3 && is3->the_bfd->my_archive == arch;
1589 is3 = (lang_input_statement_type *) is3->next)
1591 /* A MS dynamic import library can also contain static
1592 members, so look for the first element with a .dll
1593 extension, and use that for the remainder of the
1595 pnt = strrchr (is3->the_bfd->filename, '.');
1596 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0)
1604 /* OK, found one. Now look to see if the remaining
1605 (dynamic import) members use the same name. */
1607 is2 && is2->the_bfd->my_archive == arch;
1608 is2 = (lang_input_statement_type *) is2->next)
1610 /* Skip static members, ie anything with a .obj
1612 pnt = strrchr (is2->the_bfd->filename, '.');
1613 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0)
1616 if (filename_cmp (is3->the_bfd->filename,
1617 is2->the_bfd->filename))
1626 /* This fragment might have come from an .obj file in a Microsoft
1627 import, and not an actual import record. If this is the case,
1628 then leave the filename alone. */
1629 pnt = strrchr (is->the_bfd->filename, '.');
1631 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0))
1633 int idata2 = 0, reloc_count=0;
1635 char *new_name, seq;
1637 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1639 if (strcmp (sec->name, ".idata\$2") == 0)
1641 reloc_count += sec->reloc_count;
1644 if (idata2) /* .idata2 is the TOC */
1646 else if (reloc_count > 0) /* thunks */
1651 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1652 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1653 is->the_bfd->filename = new_name;
1655 new_name = xmalloc (strlen (is->filename) + 3);
1656 sprintf (new_name, "%s.%c", is->filename, seq);
1657 is->filename = new_name;
1664 /* The following chunk of code tries to identify jump stubs in
1665 import libraries which are dead code and eliminates them
1666 from the final link. For each exported symbol <sym>, there
1667 is a object file in the import library with a .text section
1668 and several .idata\$* sections. The .text section contains the
1669 symbol definition for <sym> which is a jump stub of the form
1670 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1671 for __imp_<sym> which is the address of the slot for <sym> in
1672 the import address table. When a symbol is imported explicitly
1673 using __declspec(dllimport) declaration, the compiler generates
1674 a reference to __imp_<sym> which directly resolves to the
1675 symbol in .idata\$5, in which case the jump stub code is not
1676 needed. The following code tries to identify jump stub sections
1677 in import libraries which are not referred to by anyone and
1678 marks them for exclusion from the final link. */
1679 LANG_FOR_EACH_INPUT_STATEMENT (is)
1681 if (is->the_bfd->my_archive)
1684 asection *sec, *stub_sec = NULL;
1686 /* See if this is an import library thunk. */
1687 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1689 if (strncmp (sec->name, ".idata\$", 7) == 0)
1691 /* The section containing the jmp stub has code
1693 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1697 if (is_imp && stub_sec)
1700 long nsyms, src_count;
1701 struct bfd_link_hash_entry * blhe;
1703 if (!bfd_generic_link_read_symbols (is->the_bfd))
1705 einfo (_("%F%P: %pB: could not read symbols: %E\n"),
1709 symbols = bfd_get_outsymbols (is->the_bfd);
1710 nsyms = bfd_get_symcount (is->the_bfd);
1712 for (src_count = 0; src_count < nsyms; src_count++)
1714 if (symbols[src_count]->section->id == stub_sec->id)
1716 /* This symbol belongs to the section containing
1718 blhe = bfd_link_hash_lookup (link_info.hash,
1719 symbols[src_count]->name,
1720 FALSE, FALSE, TRUE);
1721 /* If the symbol in the stub section has no other
1722 undefined references, exclude the stub section
1723 from the final link. */
1725 && blhe->type == bfd_link_hash_defined
1726 && blhe->u.undef.next == NULL
1727 && blhe != link_info.hash->undefs_tail)
1728 stub_sec->flags |= SEC_EXCLUDE;
1738 gld_${EMULATION_NAME}_before_allocation (void)
1740 #ifdef TARGET_IS_ppcpe
1741 /* Here we rummage through the found bfds to collect toc information. */
1743 LANG_FOR_EACH_INPUT_STATEMENT (is)
1745 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1747 /* xgettext:c-format */
1748 einfo (_("%P: errors encountered processing file %s\n"), is->filename);
1753 /* We have seen it all. Allocate it, and carry on. */
1754 ppc_allocate_toc_section (&link_info);
1755 #endif /* TARGET_IS_ppcpe */
1757 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1758 /* FIXME: we should be able to set the size of the interworking stub
1761 Here we rummage through the found bfds to collect glue
1762 information. FIXME: should this be based on a command line
1763 option? krk@cygnus.com. */
1765 LANG_FOR_EACH_INPUT_STATEMENT (is)
1767 if (! bfd_arm_process_before_allocation
1768 (is->the_bfd, & link_info, support_old_code))
1770 /* xgettext:c-format */
1771 einfo (_("%P: errors encountered processing file %s for interworking\n"),
1777 /* We have seen it all. Allocate it, and carry on. */
1778 bfd_arm_allocate_interworking_sections (& link_info);
1779 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1781 before_allocation_default ();
1785 /* This is called when an input file isn't recognized as a BFD. We
1786 check here for .DEF files and pull them in automatically. */
1789 saw_option (char *option)
1793 for (i = 0; init[i].ptr; i++)
1794 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1795 return init[i].inited;
1798 #endif /* DLL_SUPPORT */
1801 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1804 const char *ext = entry->filename + strlen (entry->filename) - 4;
1806 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
1808 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1812 int i, buflen=0, len;
1815 for (i = 0; i < pe_def_file->num_exports; i++)
1817 len = strlen (pe_def_file->exports[i].internal_name);
1818 if (buflen < len + 2)
1822 buf = xmalloc (buflen);
1824 for (i = 0; i < pe_def_file->num_exports; i++)
1826 struct bfd_link_hash_entry *h;
1828 sprintf (buf, "%s%s", U (""),
1829 pe_def_file->exports[i].internal_name);
1831 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1832 if (h == (struct bfd_link_hash_entry *) NULL)
1833 einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n"));
1834 if (h->type == bfd_link_hash_new)
1836 h->type = bfd_link_hash_undefined;
1837 h->u.undef.abfd = NULL;
1838 bfd_link_add_undef (link_info.hash, h);
1843 /* def_file_print (stdout, pe_def_file); */
1844 if (pe_def_file->is_dll == 1)
1845 link_info.type = type_dll;
1847 if (pe_def_file->base_address != (bfd_vma)(-1))
1850 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1851 = init[IMAGEBASEOFF].value
1852 = pe_def_file->base_address;
1853 init[IMAGEBASEOFF].inited = 1;
1854 if (image_base_statement)
1855 image_base_statement->exp
1856 = exp_assign ("__image_base__", exp_intop (pe.ImageBase),
1860 if (pe_def_file->stack_reserve != -1
1861 && ! saw_option ("__size_of_stack_reserve__"))
1863 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1864 if (pe_def_file->stack_commit != -1)
1865 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1867 if (pe_def_file->heap_reserve != -1
1868 && ! saw_option ("__size_of_heap_reserve__"))
1870 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1871 if (pe_def_file->heap_commit != -1)
1872 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1882 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1885 #ifdef TARGET_IS_i386pe
1886 pe_dll_id_target ("pei-i386");
1888 #ifdef TARGET_IS_shpe
1889 pe_dll_id_target ("pei-shl");
1891 #ifdef TARGET_IS_armpe
1892 pe_dll_id_target ("pei-arm-little");
1894 #ifdef TARGET_IS_arm_epoc_pe
1895 pe_dll_id_target ("epoc-pei-arm-little");
1897 #ifdef TARGET_IS_arm_wince_pe
1898 pe_dll_id_target ("pei-arm-wince-little");
1900 if (pe_bfd_is_dll (entry->the_bfd))
1901 return pe_implied_import_dll (entry->filename);
1907 gld_${EMULATION_NAME}_finish (void)
1909 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1910 struct bfd_link_hash_entry * h;
1912 if (thumb_entry_symbol != NULL)
1914 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1915 FALSE, FALSE, TRUE);
1917 if (h != (struct bfd_link_hash_entry *) NULL
1918 && (h->type == bfd_link_hash_defined
1919 || h->type == bfd_link_hash_defweak)
1920 && h->u.def.section->output_section != NULL)
1922 static char buffer[32];
1925 /* Special procesing is required for a Thumb entry symbol. The
1926 bottom bit of its address must be set. */
1927 val = (h->u.def.value
1928 + bfd_get_section_vma (link_info.output_bfd,
1929 h->u.def.section->output_section)
1930 + h->u.def.section->output_offset);
1934 /* Now convert this value into a string and store it in entry_symbol
1935 where the lang_finish() function will pick it up. */
1939 sprintf_vma (buffer + 2, val);
1941 if (entry_symbol.name != NULL && entry_from_cmdline)
1942 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1943 thumb_entry_symbol, entry_symbol.name);
1944 entry_symbol.name = buffer;
1947 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
1949 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
1954 if (bfd_link_pic (&link_info)
1955 #if !defined(TARGET_IS_shpe)
1956 || (!bfd_link_relocatable (&link_info)
1957 && pe_def_file->num_exports != 0)
1961 pe_dll_fill_sections (link_info.output_bfd, &link_info);
1962 if (command_line.out_implib_filename)
1963 pe_dll_generate_implib (pe_def_file, command_line.out_implib_filename,
1966 #if defined(TARGET_IS_shpe)
1967 /* ARM doesn't need relocs. */
1970 pe_exe_fill_sections (link_info.output_bfd, &link_info);
1974 if (pe_out_def_filename)
1975 pe_dll_generate_def_file (pe_out_def_filename);
1976 #endif /* DLL_SUPPORT */
1978 /* I don't know where .idata gets set as code, but it shouldn't be. */
1980 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1984 asec->flags &= ~SEC_CODE;
1985 asec->flags |= SEC_DATA;
1991 /* Place an orphan section.
1993 We use this to put sections in a reasonable place in the file, and
1994 to ensure that they are aligned as required.
1996 We handle grouped sections here as well. A section named .foo\$nn
1997 goes into the output section .foo. All grouped sections are sorted
2000 Grouped sections for the default sections are handled by the
2001 default linker script using wildcards, and are sorted by
2004 static lang_output_section_statement_type *
2005 gld_${EMULATION_NAME}_place_orphan (asection *s,
2006 const char *secname,
2009 const char *orig_secname = secname;
2010 char *dollar = NULL;
2011 lang_output_section_statement_type *os;
2012 lang_statement_list_type add_child;
2013 lang_output_section_statement_type *match_by_name = NULL;
2014 lang_statement_union_type **pl;
2016 /* Look through the script to see where to place this section. */
2017 if (!bfd_link_relocatable (&link_info)
2018 && (dollar = strchr (secname, '\$')) != NULL)
2020 size_t len = dollar - secname;
2021 char *newname = xmalloc (len + 1);
2022 memcpy (newname, secname, len);
2023 newname[len] = '\0';
2027 lang_list_init (&add_child);
2030 if (constraint == 0)
2031 for (os = lang_output_section_find (secname);
2033 os = next_matching_output_section_statement (os, 0))
2035 /* If we don't match an existing output section, tell
2036 lang_insert_orphan to create a new output section. */
2037 constraint = SPECIAL;
2039 if (os->bfd_section != NULL
2040 && (os->bfd_section->flags == 0
2041 || ((s->flags ^ os->bfd_section->flags)
2042 & (SEC_LOAD | SEC_ALLOC)) == 0))
2044 /* We already have an output section statement with this
2045 name, and its bfd section has compatible flags.
2046 If the section already exists but does not have any flags set,
2047 then it has been created by the linker, probably as a result of
2048 a --section-start command line switch. */
2049 lang_add_section (&add_child, s, NULL, os);
2053 /* Save unused output sections in case we can match them
2054 against orphans later. */
2055 if (os->bfd_section == NULL)
2059 /* If we didn't match an active output section, see if we matched an
2060 unused one and use that. */
2061 if (os == NULL && match_by_name)
2063 lang_add_section (&match_by_name->children, s, NULL, match_by_name);
2064 return match_by_name;
2069 static struct orphan_save hold[] =
2072 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
2075 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
2078 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
2081 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
2087 enum orphan_save_index
2095 static int orphan_init_done = 0;
2096 struct orphan_save *place;
2097 lang_output_section_statement_type *after;
2098 etree_type *address;
2102 if (!orphan_init_done)
2104 struct orphan_save *ho;
2105 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
2106 if (ho->name != NULL)
2108 ho->os = lang_output_section_find (ho->name);
2109 if (ho->os != NULL && ho->os->flags == 0)
2110 ho->os->flags = ho->flags;
2112 orphan_init_done = 1;
2116 if (!bfd_link_relocatable (&link_info))
2119 while ((nexts = bfd_get_next_section_by_name (nexts->owner,
2121 if (nexts->output_section == NULL
2122 && (nexts->flags & SEC_EXCLUDE) == 0
2123 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
2124 && (nexts->owner->flags & DYNAMIC) == 0
2125 && nexts->owner->usrdata != NULL
2126 && !(((lang_input_statement_type *) nexts->owner->usrdata)
2128 flags = (((flags ^ SEC_READONLY)
2129 | (nexts->flags ^ SEC_READONLY))
2133 /* Try to put the new output section in a reasonable place based
2134 on the section name and section flags. */
2137 if ((flags & SEC_ALLOC) == 0)
2139 else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2140 place = &hold[orphan_bss];
2141 else if ((flags & SEC_READONLY) == 0)
2142 place = &hold[orphan_data];
2143 else if ((flags & SEC_CODE) == 0)
2145 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
2146 : &hold[orphan_rodata]);
2149 place = &hold[orphan_text];
2154 if (place->os == NULL)
2155 place->os = lang_output_section_find (place->name);
2158 after = lang_output_section_find_by_flags (s, flags, &place->os,
2161 /* *ABS* is always the first output section statement. */
2162 after = (&lang_output_section_statement.head
2163 ->output_section_statement);
2166 /* All sections in an executable must be aligned to a page boundary.
2167 In a relocatable link, just preserve the incoming alignment; the
2168 address is discarded by lang_insert_orphan in that case, anyway. */
2169 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2170 os = lang_insert_orphan (s, secname, constraint, after, place, address,
2172 if (bfd_link_relocatable (&link_info))
2174 os->section_alignment = s->alignment_power;
2175 os->bfd_section->alignment_power = s->alignment_power;
2179 /* If the section name has a '\$', sort it with the other '\$'
2181 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2183 lang_input_section_type *ls;
2186 if ((*pl)->header.type != lang_input_section_enum)
2189 ls = &(*pl)->input_section;
2191 lname = bfd_get_section_name (ls->section->owner, ls->section);
2192 if (strchr (lname, '\$') != NULL
2193 && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2197 if (add_child.head != NULL)
2199 *add_child.tail = *pl;
2200 *pl = add_child.head;
2207 gld_${EMULATION_NAME}_open_dynamic_archive
2208 (const char *arch ATTRIBUTE_UNUSED,
2209 search_dirs_type *search,
2210 lang_input_statement_type *entry)
2214 const char * format;
2215 bfd_boolean use_prefix;
2219 /* Preferred explicit import library for dll's. */
2220 { "lib%s.dll.a", FALSE },
2221 /* Alternate explicit import library for dll's. */
2222 { "%s.dll.a", FALSE },
2223 /* "libfoo.a" could be either an import lib or a static lib.
2224 For backwards compatibility, libfoo.a needs to precede
2225 libfoo.dll and foo.dll in the search. */
2226 { "lib%s.a", FALSE },
2227 /* The 'native' spelling of an import lib name is "foo.lib". */
2228 { "%s.lib", FALSE },
2229 /* PR 22948 - Check for an import library. */
2230 { "lib%s.lib", FALSE },
2232 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
2233 { "%s%s.dll", TRUE },
2235 /* Try "libfoo.dll" (default preferred dll name). */
2236 { "lib%s.dll", FALSE },
2237 /* Finally try 'native' dll name "foo.dll". */
2238 { "%s.dll", FALSE },
2239 /* Note: If adding more formats to this table, make sure to check to
2240 see if their length is longer than libname_fmt[0].format, and if
2241 so, update the call to xmalloc() below. */
2244 static unsigned int format_max_len = 0;
2245 const char * filename;
2251 if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
2254 filename = entry->filename;
2256 if (format_max_len == 0)
2257 /* We need to allow space in the memory that we are going to allocate
2258 for the characters in the format string. Since the format array is
2259 static we only need to calculate this information once. In theory
2260 this value could also be computed statically, but this introduces
2261 the possibility for a discrepancy and hence a possible memory
2262 corruption. The lengths we compute here will be too long because
2263 they will include any formating characters (%s) in the strings, but
2264 this will not matter. */
2265 for (i = 0; libname_fmt[i].format; i++)
2266 if (format_max_len < strlen (libname_fmt[i].format))
2267 format_max_len = strlen (libname_fmt[i].format);
2269 full_string = xmalloc (strlen (search->name)
2273 + (pe_dll_search_prefix
2274 ? strlen (pe_dll_search_prefix) : 0)
2276 /* Allow for the terminating NUL and for the path
2277 separator character that is inserted between
2278 search->name and the start of the format string. */
2281 sprintf (full_string, "%s/", search->name);
2282 base_string = full_string + strlen (full_string);
2284 for (i = 0; libname_fmt[i].format; i++)
2287 if (libname_fmt[i].use_prefix)
2289 if (!pe_dll_search_prefix)
2291 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
2295 sprintf (base_string, libname_fmt[i].format, filename);
2297 if (ldfile_try_open_bfd (full_string, entry))
2301 if (!libname_fmt[i].format)
2307 entry->filename = full_string;
2313 gld_${EMULATION_NAME}_find_potential_libraries
2314 (char *name, lang_input_statement_type *entry)
2316 return ldfile_open_file_search (name, entry, "", ".lib");
2320 gld_${EMULATION_NAME}_get_script (int *isfile)
2322 # Scripts compiled in.
2323 # sed commands to quote an ld script as a C string.
2324 sc="-f stringify.sed"
2330 if (bfd_link_relocatable (&link_info) && config.build_constructors)
2333 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2334 echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
2335 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2336 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2337 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2338 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2339 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2340 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2341 echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c
2342 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
2344 echo ' ; else return' >> e${EMULATION_NAME}.c
2345 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2346 echo '; }' >> e${EMULATION_NAME}.c
2351 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2353 gld_${EMULATION_NAME}_before_parse,
2356 gld_${EMULATION_NAME}_after_parse,
2357 gld_${EMULATION_NAME}_after_open,
2358 after_check_relocs_default,
2359 after_allocation_default,
2360 set_output_arch_default,
2361 ldemul_default_target,
2362 gld_${EMULATION_NAME}_before_allocation,
2363 gld_${EMULATION_NAME}_get_script,
2364 "${EMULATION_NAME}",
2366 gld_${EMULATION_NAME}_finish,
2367 NULL, /* Create output section statements. */
2368 gld_${EMULATION_NAME}_open_dynamic_archive,
2369 gld_${EMULATION_NAME}_place_orphan,
2370 gld_${EMULATION_NAME}_set_symbols,
2371 NULL, /* parse_args */
2372 gld${EMULATION_NAME}_add_options,
2373 gld${EMULATION_NAME}_handle_option,
2374 gld_${EMULATION_NAME}_unrecognized_file,
2375 gld_${EMULATION_NAME}_list_options,
2376 gld_${EMULATION_NAME}_recognized_file,
2377 gld_${EMULATION_NAME}_find_potential_libraries,
2378 NULL, /* new_vers_pattern. */
2379 NULL /* extra_map_file_text. */