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${EMULATION_NAME}.c # there, now line numbers match ;-)
11 /* Copyright (C) 1995-2020 Free Software Foundation, Inc.
13 This file is part of the GNU Binutils.
15 This program is free software; you can redistribute it and/or modify
16 it under the terms of the GNU General Public License as published by
17 the Free Software Foundation; either version 3 of the License, or
18 (at your option) any later version.
20 This program is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with this program; if not, write to the Free Software
27 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
28 MA 02110-1301, USA. */
32 /* The original file generated returned different default scripts depending
33 on whether certain switches were set, but these switches pertain to the
34 Linux system and that particular version of coff. In the NT case, we
35 only determine if the subsystem is console or windows in order to select
36 the correct entry point by default. */
38 #define TARGET_IS_${EMULATION_NAME}
45 #include "libiberty.h"
46 #include "filenames.h"
57 #include "ldbuildid.h"
58 #include "coff/internal.h"
60 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
61 header in generic PE code. */
62 #include "coff/i386.h"
65 /* FIXME: These are BFD internal header files, and we should not be
67 #include "../bfd/libcoff.h"
68 #include "../bfd/libpei.h"
70 #if defined(TARGET_IS_armpe) \
71 || defined(TARGET_IS_arm_wince_pe)
72 #define bfd_arm_allocate_interworking_sections \
73 bfd_${EMULATION_NAME}_allocate_interworking_sections
74 #define bfd_arm_get_bfd_for_interworking \
75 bfd_${EMULATION_NAME}_get_bfd_for_interworking
76 #define bfd_arm_process_before_allocation \
77 bfd_${EMULATION_NAME}_process_before_allocation
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_armpe) \
97 || defined(TARGET_IS_arm_wince_pe)
101 #if defined(TARGET_IS_i386pe)
102 #define DEFAULT_PSEUDO_RELOC_VERSION 2
104 #define DEFAULT_PSEUDO_RELOC_VERSION 1
107 #if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
108 #define PE_DEF_SUBSYSTEM 3
110 #undef NT_EXE_IMAGE_BASE
111 #undef PE_DEF_SECTION_ALIGNMENT
112 #undef PE_DEF_FILE_ALIGNMENT
113 #define NT_EXE_IMAGE_BASE 0x00010000
115 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
116 #define PE_DEF_SECTION_ALIGNMENT 0x00001000
117 #define PE_DEF_SUBSYSTEM 9
119 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
120 #define PE_DEF_SUBSYSTEM 2
122 #define PE_DEF_FILE_ALIGNMENT 0x00000200
125 static struct internal_extra_pe_aouthdr pe;
127 static int pe_subsystem = ${SUBSYSTEM};
128 static flagword real_flags = 0;
129 static int support_old_code = 0;
130 static char * thumb_entry_symbol = NULL;
131 static lang_assignment_statement_type *image_base_statement = 0;
132 static unsigned short pe_dll_characteristics = 0;
133 static bfd_boolean insert_timestamp = TRUE;
134 static const char *emit_build_id;
137 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
138 static char *pe_out_def_filename = NULL;
139 static int pe_enable_auto_image_base = 0;
140 static unsigned long pe_auto_image_base = 0x61500000;
141 static char *pe_dll_search_prefix = NULL;
144 extern const char *output_filename;
146 static int is_underscoring (void)
149 if (pe_leading_underscore != -1)
150 return pe_leading_underscore;
151 if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
152 bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
156 pe_leading_underscore = (u != 0 ? 1 : 0);
157 return pe_leading_underscore;
161 gld_${EMULATION_NAME}_before_parse (void)
164 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
165 output_filename = "${EXECUTABLE_NAME:-a.exe}";
167 input_flags.dynamic = TRUE;
168 config.has_shared = 1;
171 # Cygwin no longer wants these noisy warnings. Other PE
172 # targets might like to consider adding themselves here.
173 # See also the mail thread starting here for the reason why
174 # merge_rdata defaults to 0 for cygwin:
175 # http://cygwin.com/ml/cygwin-apps/2013-04/msg00187.html
178 default_auto_import=1
179 default_merge_rdata=0
181 i[3-7]86-*-mingw* | x86_64-*-mingw*)
182 default_auto_import=1
183 default_merge_rdata=0
186 default_auto_import=-1
187 default_merge_rdata=1
192 link_info.pei386_auto_import = ${default_auto_import};
193 /* Use by default version. */
194 link_info.pei386_runtime_pseudo_reloc = DEFAULT_PSEUDO_RELOC_VERSION;
198 /* Indicates if RDATA shall be merged into DATA when pseudo-relocation
199 version 2 is used and auto-import is enabled. */
200 #define MERGE_RDATA_V2 ${default_merge_rdata}
202 /* PE format extra command line options. */
204 /* Used for setting flags in the PE header. */
205 #define OPTION_BASE_FILE (300 + 1)
206 #define OPTION_DLL (OPTION_BASE_FILE + 1)
207 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
208 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
209 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
210 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
211 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
212 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
213 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
214 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
215 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
216 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
217 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
218 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
219 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
220 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
221 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
222 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
223 #define OPTION_EXCLUDE_ALL_SYMBOLS (OPTION_EXCLUDE_SYMBOLS + 1)
224 #define OPTION_KILL_ATS (OPTION_EXCLUDE_ALL_SYMBOLS + 1)
225 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
226 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
227 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
228 #define OPTION_THUMB_ENTRY (OPTION_DISABLE_STDCALL_FIXUP + 1)
229 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
230 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
231 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
232 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
233 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
234 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
235 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
236 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
237 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
238 #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
239 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
240 (OPTION_EXCLUDE_LIBS + 1)
241 #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
242 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
243 #define OPTION_LARGE_ADDRESS_AWARE (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
244 #define OPTION_DISABLE_LARGE_ADDRESS_AWARE \
245 (OPTION_LARGE_ADDRESS_AWARE + 1)
246 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
247 (OPTION_DISABLE_LARGE_ADDRESS_AWARE + 1)
248 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
249 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
250 #define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
251 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
252 #define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
253 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
254 #define OPTION_NO_LEADING_UNDERSCORE (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
255 #define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 1)
256 #define OPTION_ENABLE_LONG_SECTION_NAMES \
257 (OPTION_LEADING_UNDERSCORE + 1)
258 #define OPTION_DISABLE_LONG_SECTION_NAMES \
259 (OPTION_ENABLE_LONG_SECTION_NAMES + 1)
260 /* DLLCharacteristics flags. */
261 #define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1)
262 #define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1)
263 #define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1)
264 #define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1)
265 #define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1)
266 #define OPTION_NO_BIND (OPTION_NO_SEH + 1)
267 #define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1)
268 #define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1)
270 #define OPTION_INSERT_TIMESTAMP (OPTION_TERMINAL_SERVER_AWARE + 1)
271 #define OPTION_NO_INSERT_TIMESTAMP (OPTION_INSERT_TIMESTAMP + 1)
272 #define OPTION_BUILD_ID (OPTION_NO_INSERT_TIMESTAMP + 1)
273 #define OPTION_ENABLE_RELOC_SECTION (OPTION_BUILD_ID + 1)
276 gld${EMULATION_NAME}_add_options
277 (int ns ATTRIBUTE_UNUSED,
278 char **shortopts ATTRIBUTE_UNUSED,
280 struct option **longopts,
281 int nrl ATTRIBUTE_UNUSED,
282 struct option **really_longopts ATTRIBUTE_UNUSED)
284 static const struct option xtra_long[] =
287 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
288 {"dll", no_argument, NULL, OPTION_DLL},
289 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
290 {"heap", required_argument, NULL, OPTION_HEAP},
291 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
292 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
293 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
294 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
295 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
296 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
297 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
298 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
299 {"stack", required_argument, NULL, OPTION_STACK},
300 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
301 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
302 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
303 {"use-nul-prefixed-import-tables", no_argument, NULL,
304 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
305 {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
306 {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
307 {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
308 {"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP},
310 /* getopt allows abbreviations, so we do this to stop it
311 from treating -o as an abbreviation for this option. */
312 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
313 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
314 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
315 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
316 {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
317 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
318 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
319 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
320 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
321 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
322 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
323 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
324 /* getopt() allows abbreviations, so we do this to stop it from
325 treating -c as an abbreviation for these --compat-implib. */
326 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
327 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
328 {"enable-auto-image-base", optional_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
329 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
330 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
331 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
332 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
333 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
334 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
335 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
336 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
337 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
338 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
340 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
341 {"disable-large-address-aware", no_argument, NULL, OPTION_DISABLE_LARGE_ADDRESS_AWARE},
342 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
343 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
344 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
345 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
346 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
347 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
348 {"no-seh", no_argument, NULL, OPTION_NO_SEH},
349 {"no-bind", no_argument, NULL, OPTION_NO_BIND},
350 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
351 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
352 {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
353 {"enable-reloc-section", no_argument, NULL, OPTION_ENABLE_RELOC_SECTION},
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, _(" --enable-reloc-section Create the base relocation table\n"));
489 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
490 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
491 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
492 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
493 be called in this image\n"));
494 fprintf (file, _(" --no-bind Do not bind this image\n"));
495 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
496 fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
497 fprintf (file, _(" --build-id[=STYLE] Generate build ID\n"));
502 set_pe_name (char *name, long val)
507 /* Find the name and set it. */
508 for (i = 0; init[i].ptr; i++)
510 if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
514 if (strcmp (name,"__image_base__") == 0)
515 set_pe_name (U ("__ImageBase"), val);
523 set_entry_point (void)
526 const char *initial_symbol_char;
536 { 1, "NtProcessStartup" },
537 { 2, "WinMainCRTStartup" },
538 { 3, "mainCRTStartup" },
539 { 7, "__PosixProcessStartup"},
540 { 9, "WinMainCRTStartup" },
541 {14, "mainCRTStartup" },
545 /* Entry point name for arbitrary subsystem numbers. */
546 static const char default_entry[] = "mainCRTStartup";
548 if (bfd_link_pic (&link_info) || dll)
550 #if defined (TARGET_IS_i386pe)
551 entry = "DllMainCRTStartup@12";
553 entry = "DllMainCRTStartup";
558 for (i = 0; v[i].entry; i++)
559 if (v[i].value == pe_subsystem)
562 /* If no match, use the default. */
563 if (v[i].entry != NULL)
566 entry = default_entry;
569 initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
571 if (*initial_symbol_char != '\0')
575 /* lang_default_entry expects its argument to be permanently
576 allocated, so we don't free this string. */
577 alc_entry = xmalloc (strlen (initial_symbol_char)
580 strcpy (alc_entry, initial_symbol_char);
581 strcat (alc_entry, entry);
585 lang_default_entry (entry);
589 set_pe_subsystem (void)
595 unsigned long temp_subsystem;
612 /* Check for the presence of a version number. */
613 sver = strchr (optarg, ':');
615 len = strlen (optarg);
619 set_pe_name ("__major_subsystem_version__",
620 strtoul (sver + 1, &end, 0));
622 set_pe_name ("__minor_subsystem_version__",
623 strtoul (end + 1, &end, 0));
625 einfo (_("%P: warning: bad version number in -subsystem option\n"));
628 /* Check for numeric subsystem. */
629 temp_subsystem = strtoul (optarg, & end, 0);
630 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
632 /* Search list for a numeric match to use its entry point. */
633 for (i = 0; v[i].name; i++)
634 if (v[i].value == (int) temp_subsystem)
637 /* Use this subsystem. */
638 pe_subsystem = (int) temp_subsystem;
642 /* Search for subsystem by name. */
643 for (i = 0; v[i].name; i++)
644 if (strncmp (optarg, v[i].name, len) == 0
645 && v[i].name[len] == '\0')
648 if (v[i].name == NULL)
650 einfo (_("%F%P: invalid subsystem type %s\n"), optarg);
654 pe_subsystem = v[i].value;
657 set_pe_name ("__subsystem__", pe_subsystem);
664 set_pe_value (char *name)
668 set_pe_name (name, strtoul (optarg, &end, 0));
671 einfo (_("%F%P: invalid hex number for PE parameter '%s'\n"), optarg);
678 set_pe_stack_heap (char *resname, char *comname)
680 set_pe_value (resname);
685 set_pe_value (comname);
688 einfo (_("%F%P: strange hex info for PE parameter '%s'\n"), optarg);
691 #define DEFAULT_BUILD_ID_STYLE "md5"
694 gld${EMULATION_NAME}_handle_option (int optc)
701 case OPTION_BASE_FILE:
702 link_info.base_file = fopen (optarg, FOPEN_WB);
703 if (link_info.base_file == NULL)
704 einfo (_("%F%P: cannot open base file %s\n"), optarg);
709 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
712 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
714 case OPTION_SUBSYSTEM:
717 case OPTION_MAJOR_OS_VERSION:
718 set_pe_value ("__major_os_version__");
720 case OPTION_MINOR_OS_VERSION:
721 set_pe_value ("__minor_os_version__");
723 case OPTION_MAJOR_SUBSYSTEM_VERSION:
724 set_pe_value ("__major_subsystem_version__");
726 case OPTION_MINOR_SUBSYSTEM_VERSION:
727 set_pe_value ("__minor_subsystem_version__");
729 case OPTION_MAJOR_IMAGE_VERSION:
730 set_pe_value ("__major_image_version__");
732 case OPTION_MINOR_IMAGE_VERSION:
733 set_pe_value ("__minor_image_version__");
735 case OPTION_FILE_ALIGNMENT:
736 set_pe_value ("__file_alignment__");
738 case OPTION_SECTION_ALIGNMENT:
739 set_pe_value ("__section_alignment__");
742 set_pe_name ("__dll__", 1);
744 case OPTION_IMAGE_BASE:
745 set_pe_value ("__image_base__");
747 case OPTION_SUPPORT_OLD_CODE:
748 support_old_code = 1;
750 case OPTION_THUMB_ENTRY:
751 thumb_entry_symbol = optarg;
753 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
754 pe_use_nul_prefixed_import_tables = TRUE;
756 case OPTION_NO_LEADING_UNDERSCORE:
757 pe_leading_underscore = 0;
759 case OPTION_LEADING_UNDERSCORE:
760 pe_leading_underscore = 1;
762 case OPTION_INSERT_TIMESTAMP:
763 insert_timestamp = TRUE;
765 case OPTION_NO_INSERT_TIMESTAMP:
766 insert_timestamp = FALSE;
770 pe_out_def_filename = xstrdup (optarg);
772 case OPTION_EXPORT_ALL:
773 pe_dll_export_everything = 1;
775 case OPTION_EXCLUDE_SYMBOLS:
776 pe_dll_add_excludes (optarg, EXCLUDESYMS);
778 case OPTION_EXCLUDE_ALL_SYMBOLS:
779 pe_dll_exclude_all_symbols = 1;
781 case OPTION_EXCLUDE_LIBS:
782 pe_dll_add_excludes (optarg, EXCLUDELIBS);
784 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
785 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
787 case OPTION_KILL_ATS:
790 case OPTION_STDCALL_ALIASES:
791 pe_dll_stdcall_aliases = 1;
793 case OPTION_ENABLE_STDCALL_FIXUP:
794 pe_enable_stdcall_fixup = 1;
796 case OPTION_DISABLE_STDCALL_FIXUP:
797 pe_enable_stdcall_fixup = 0;
799 case OPTION_WARN_DUPLICATE_EXPORTS:
800 pe_dll_warn_dup_exports = 1;
802 case OPTION_IMP_COMPAT:
803 pe_dll_compat_implib = 1;
805 case OPTION_ENABLE_AUTO_IMAGE_BASE:
806 pe_enable_auto_image_base = 1;
807 if (optarg && *optarg)
810 pe_auto_image_base = strtoul (optarg, &end, 0);
811 /* XXX should check that we actually parsed something */
814 case OPTION_DISABLE_AUTO_IMAGE_BASE:
815 pe_enable_auto_image_base = 0;
817 case OPTION_DLL_SEARCH_PREFIX:
818 pe_dll_search_prefix = xstrdup (optarg);
820 case OPTION_NO_DEFAULT_EXCLUDES:
821 pe_dll_do_default_excludes = 0;
823 case OPTION_DLL_ENABLE_AUTO_IMPORT:
824 link_info.pei386_auto_import = 1;
826 case OPTION_DLL_DISABLE_AUTO_IMPORT:
827 link_info.pei386_auto_import = 0;
829 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
830 link_info.pei386_runtime_pseudo_reloc =
831 DEFAULT_PSEUDO_RELOC_VERSION;
833 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
834 link_info.pei386_runtime_pseudo_reloc = 1;
836 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
837 link_info.pei386_runtime_pseudo_reloc = 2;
839 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
840 link_info.pei386_runtime_pseudo_reloc = 0;
842 case OPTION_ENABLE_EXTRA_PE_DEBUG:
843 pe_dll_extra_pe_debug = 1;
846 case OPTION_LARGE_ADDRESS_AWARE:
847 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
849 case OPTION_DISABLE_LARGE_ADDRESS_AWARE:
850 real_flags &= ~ IMAGE_FILE_LARGE_ADDRESS_AWARE;
852 case OPTION_ENABLE_LONG_SECTION_NAMES:
853 pe_use_coff_long_section_names = 1;
855 case OPTION_DISABLE_LONG_SECTION_NAMES:
856 pe_use_coff_long_section_names = 0;
858 /* Get DLLCharacteristics bits */
859 case OPTION_DYNAMIC_BASE:
860 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
862 case OPTION_ENABLE_RELOC_SECTION:
863 pe_dll_enable_reloc_section = 1;
865 case OPTION_FORCE_INTEGRITY:
866 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
868 case OPTION_NX_COMPAT:
869 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
871 case OPTION_NO_ISOLATION:
872 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
875 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
878 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
880 case OPTION_WDM_DRIVER:
881 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
883 case OPTION_TERMINAL_SERVER_AWARE:
884 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
886 case OPTION_BUILD_ID:
887 if (emit_build_id != NULL)
889 free ((char *) emit_build_id);
890 emit_build_id = NULL;
893 optarg = DEFAULT_BUILD_ID_STYLE;
894 if (strcmp (optarg, "none"))
895 emit_build_id = xstrdup (optarg);
899 /* Set DLLCharacteristics bits */
900 set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
908 strhash (const char *str)
910 const unsigned char *s;
917 s = (const unsigned char *) str;
918 while ((c = *s++) != '\0')
920 hash += c + (c << 17);
924 hash += len + (len << 17);
930 /* Use the output file to create a image base for relocatable DLLs. */
933 compute_dll_image_base (const char *ofile)
935 unsigned long hash = strhash (ofile);
936 return pe_auto_image_base + ((hash << 16) & 0x0FFC0000);
940 /* Assign values to the special symbols before the linker script is
944 gld_${EMULATION_NAME}_set_symbols (void)
946 /* Run through and invent symbols for all the
947 names and insert the defaults. */
952 if (!init[IMAGEBASEOFF].inited)
954 if (bfd_link_relocatable (&link_info))
955 init[IMAGEBASEOFF].value = 0;
956 else if (init[DLLOFF].value || bfd_link_dll (&link_info))
959 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base
960 ? compute_dll_image_base (output_filename)
961 : NT_DLL_IMAGE_BASE);
963 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
967 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
968 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
971 /* Don't do any symbol assignments if this is a relocatable link. */
972 if (bfd_link_relocatable (&link_info))
975 /* Glue the assignments into the abs section. */
976 push_stat_ptr (&abs_output_section->children);
978 for (j = 0; init[j].ptr; j++)
980 long val = init[j].value;
981 lang_assignment_statement_type *rv;
983 rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j),
984 exp_intop (val), FALSE));
985 if (init[j].size == sizeof (short))
986 *(short *) init[j].ptr = val;
987 else if (init[j].size == sizeof (int))
988 *(int *) init[j].ptr = val;
989 else if (init[j].size == sizeof (long))
990 *(long *) init[j].ptr = val;
991 /* This might be a long long or other special type. */
992 else if (init[j].size == sizeof (bfd_vma))
993 *(bfd_vma *) init[j].ptr = val;
995 if (j == IMAGEBASEOFF)
996 image_base_statement = rv;
998 /* Restore the pointer. */
1001 if (pe.FileAlignment > pe.SectionAlignment)
1003 einfo (_("%P: warning, file alignment > section alignment\n"));
1007 /* This is called after the linker script and the command line options
1011 gld_${EMULATION_NAME}_after_parse (void)
1013 /* PR ld/6744: Warn the user if they have used an ELF-only
1014 option hoping it will work on PE. */
1015 if (link_info.export_dynamic)
1016 einfo (_("%P: warning: --export-dynamic is not supported for PE "
1017 "targets, did you mean --export-all-symbols?\n"));
1021 after_parse_default ();
1025 static struct bfd_link_hash_entry *pe_undef_found_sym;
1028 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
1032 const char *hs = h->root.string;
1034 sl = strlen (string);
1035 if (h->type == bfd_link_hash_defined
1036 && ((*hs == '@' && *string == '_'
1037 && strncmp (hs + 1, string + 1, sl - 1) == 0)
1038 || strncmp (hs, string, sl) == 0)
1039 && h->root.string[sl] == '@')
1041 pe_undef_found_sym = h;
1047 /* Change UNDEF to a defined symbol, taking data from SYM. */
1050 change_undef (struct bfd_link_hash_entry * undef,
1051 struct bfd_link_hash_entry * sym)
1053 static bfd_boolean gave_warning_message = FALSE;
1055 undef->type = bfd_link_hash_defined;
1056 undef->u.def.value = sym->u.def.value;
1057 undef->u.def.section = sym->u.def.section;
1059 if (pe_enable_stdcall_fixup == -1)
1061 einfo (_("%P: warning: resolving %s by linking to %s\n"),
1062 undef->root.string, sym->root.string);
1064 if (! gave_warning_message)
1066 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1067 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1068 gave_warning_message = TRUE;
1072 /* PR 19803: Make sure that the linked symbol is not garbage collected. */
1073 lang_add_gc_name (sym->root.string);
1077 pe_fixup_stdcalls (void)
1079 struct bfd_link_hash_entry *undef, *sym;
1081 if (pe_dll_extra_pe_debug)
1082 printf ("%s\n", __FUNCTION__);
1084 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1085 if (undef->type == bfd_link_hash_undefined)
1087 const char * name = undef->root.string;
1089 int lead_at = (*name == '@');
1092 at = strchr (name + 1, '@');
1094 at = strchr (name, '@');
1098 /* The symbol is a stdcall symbol, so let's look for a
1099 cdecl symbol with the same name and resolve to that. */
1100 char *cname = xstrdup (name);
1105 * strchr (cname, '@') = 0;
1106 sym = bfd_link_hash_lookup (link_info.hash, cname, FALSE, FALSE, TRUE);
1108 if (sym && sym->type == bfd_link_hash_defined)
1109 change_undef (undef, sym);
1113 /* The symbol is a cdecl symbol, so we look for stdcall
1114 symbols - which means scanning the whole symbol table. */
1115 pe_undef_found_sym = NULL;
1116 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
1118 if (pe_undef_found_sym)
1119 change_undef (undef, pe_undef_found_sym);
1125 make_import_fixup (arelent *rel, asection *s, char *name, const char *symname)
1127 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1131 if (pe_dll_extra_pe_debug)
1132 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1133 (unsigned long) rel->address, (long) rel->addend);
1135 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
1136 einfo (_("%P: %C: cannot get section contents - auto-import exception\n"),
1137 s->owner, s, rel->address);
1139 _addend = bfd_get_32 (s->owner, addend);
1140 pe_create_import_fixup (rel, s, _addend, name, symname);
1144 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1146 printf ("+%s\n", h->string);
1150 #endif /* DLL_SUPPORT */
1153 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1155 int *found = (int *) obj;
1156 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1161 pecoff_checksum_contents (bfd *abfd,
1162 void (*process) (const void *, size_t, void *),
1165 file_ptr filepos = (file_ptr) 0;
1172 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
1175 status = bfd_bread (&b, (bfd_size_type) 1, abfd);
1181 (*process) (&b, 1, arg);
1189 write_build_id (bfd *abfd)
1191 struct pe_tdata *t = pe_data (abfd);
1193 struct bfd_link_order *link_order = NULL;
1194 unsigned char *contents;
1196 bfd_size_type build_id_size;
1197 unsigned char *build_id;
1199 /* Find the section the .buildid output section has been merged info. */
1200 for (asec = abfd->sections; asec != NULL; asec = asec->next)
1202 struct bfd_link_order *l = NULL;
1203 for (l = asec->map_head.link_order; l != NULL; l = l->next)
1205 if (l->type == bfd_indirect_link_order)
1207 if (l->u.indirect.section == t->build_id.sec)
1221 einfo (_("%P: warning: .buildid section discarded,"
1222 " --build-id ignored\n"));
1226 if (t->build_id.sec->contents == NULL)
1227 t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
1228 contents = t->build_id.sec->contents;
1229 size = t->build_id.sec->size;
1231 build_id_size = compute_build_id_size (t->build_id.style);
1232 build_id = xmalloc (build_id_size);
1233 generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
1235 bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
1237 /* Construct a debug directory entry which points to an immediately following CodeView record. */
1238 struct internal_IMAGE_DEBUG_DIRECTORY idd;
1239 idd.Characteristics = 0;
1240 idd.TimeDateStamp = 0;
1241 idd.MajorVersion = 0;
1242 idd.MinorVersion = 0;
1243 idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
1244 idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
1245 idd.AddressOfRawData = asec->vma - ib + link_order->offset
1246 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1247 idd.PointerToRawData = asec->filepos + link_order->offset
1248 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1250 struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
1251 _bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
1253 /* Write the debug directory entry. */
1254 if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
1257 if (bfd_bwrite (contents, size, abfd) != size)
1260 /* Construct the CodeView record. */
1261 CODEVIEW_INFO cvinfo;
1262 cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
1265 /* Zero pad or truncate the generated build_id to fit in the CodeView record. */
1266 memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
1267 memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
1268 ? CV_INFO_SIGNATURE_LENGTH : build_id_size);
1272 /* Write the codeview record. */
1273 if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
1276 /* Record the location of the debug directory in the data directory. */
1277 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
1278 = asec->vma - ib + link_order->offset;
1279 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
1280 = sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1285 /* Make .buildid section, and set up coff_tdata->build_id. */
1287 setup_build_id (bfd *ibfd)
1292 if (!validate_build_id_style (emit_build_id))
1294 einfo (_("%P: warning: unrecognized --build-id style ignored\n"));
1298 flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
1299 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
1300 s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
1303 struct pe_tdata *t = pe_data (link_info.output_bfd);
1304 t->build_id.after_write_object_contents = &write_build_id;
1305 t->build_id.style = emit_build_id;
1306 t->build_id.sec = s;
1308 /* Section is a fixed size:
1309 One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
1310 pointing at a CV_INFO_PDB70 record containing the build-id, with a
1311 null byte for PdbFileName. */
1312 s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
1313 + sizeof (CV_INFO_PDB70) + 1;
1318 einfo (_("%P: warning: cannot create .buildid section,"
1319 " --build-id ignored\n"));
1324 gld_${EMULATION_NAME}_after_open (void)
1326 after_open_default ();
1329 if (pe_dll_extra_pe_debug)
1332 struct bfd_link_hash_entry *sym;
1334 printf ("%s()\n", __FUNCTION__);
1336 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1337 printf ("-%s\n", sym->root.string);
1338 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1340 for (a = link_info.input_bfds; a; a = a->link.next)
1341 printf ("*%s\n",a->filename);
1345 if (emit_build_id != NULL)
1349 /* Find a COFF input. */
1350 for (abfd = link_info.input_bfds;
1351 abfd != (bfd *) NULL; abfd = abfd->link.next)
1352 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
1355 /* If there are no COFF input files do not try to
1356 add a build-id section. */
1358 || !setup_build_id (abfd))
1360 free ((char *) emit_build_id);
1361 emit_build_id = NULL;
1365 /* Pass the wacky PE command line options into the output bfd.
1366 FIXME: This should be done via a function, rather than by
1367 including an internal BFD header. */
1369 if (bfd_get_flavour (link_info.output_bfd) != bfd_target_coff_flavour
1370 || coff_data (link_info.output_bfd) == NULL
1371 || coff_data (link_info.output_bfd)->pe == 0)
1372 einfo (_("%F%P: cannot perform PE operations on non PE output file '%pB'\n"),
1373 link_info.output_bfd);
1375 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1376 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1377 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1378 pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
1380 /* At this point we must decide whether to use long section names
1381 in the output or not. If the user hasn't explicitly specified
1382 on the command line, we leave it to the default for the format
1383 (object files yes, image files no), except if there is debug
1384 information present; GDB relies on the long section names to
1385 find it, so enable it in that case. */
1386 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1388 if (bfd_link_relocatable (&link_info))
1389 pe_use_coff_long_section_names = 1;
1392 /* Iterate over all sections of all input BFDs, checking
1393 for any that begin 'debug_' and are long names. */
1394 LANG_FOR_EACH_INPUT_STATEMENT (is)
1396 int found_debug = 0;
1398 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1401 pe_use_coff_long_section_names = 1;
1408 pe_output_file_set_long_section_names (link_info.output_bfd);
1411 pe_process_import_defs (link_info.output_bfd, &link_info);
1413 if (link_info.pei386_auto_import) /* -1=warn or 1=enable */
1414 pe_find_data_imports (U ("_head_"), make_import_fixup);
1416 /* The implementation of the feature is rather dumb and would cause the
1417 compilation time to go through the roof if there are many undefined
1418 symbols in the link, so it needs to be run after auto-import. */
1419 if (pe_enable_stdcall_fixup) /* -1=warn or 1=enable */
1420 pe_fixup_stdcalls ();
1422 #if defined (TARGET_IS_i386pe) \
1423 || defined (TARGET_IS_armpe) \
1424 || defined (TARGET_IS_arm_wince_pe)
1425 if (!bfd_link_relocatable (&link_info))
1426 pe_dll_build_sections (link_info.output_bfd, &link_info);
1428 if (bfd_link_pic (&link_info))
1429 pe_dll_build_sections (link_info.output_bfd, &link_info);
1431 pe_exe_build_sections (link_info.output_bfd, &link_info);
1433 #endif /* DLL_SUPPORT */
1435 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
1436 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1438 /* The arm backend needs special fields in the output hash structure.
1439 These will only be created if the output format is an arm format,
1440 hence we do not support linking and changing output formats at the
1441 same time. Use a link followed by objcopy to change output formats. */
1442 einfo (_("%F%P: error: cannot change output format "
1443 "whilst linking %s binaries\n"), "ARM");
1447 /* Find a BFD that can hold the interworking stubs. */
1448 LANG_FOR_EACH_INPUT_STATEMENT (is)
1450 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1457 /* This next chunk of code tries to detect the case where you have
1458 two import libraries for the same DLL (specifically,
1459 symbolically linking libm.a and libc.a in cygwin to
1460 libcygwin.a). In those cases, it's possible for function
1461 thunks from the second implib to be used but without the
1462 head/tail objects, causing an improper import table. We detect
1463 those cases and rename the "other" import libraries to match
1464 the one the head/tail come from, so that the linker will sort
1465 things nicely and produce a valid import table. */
1467 LANG_FOR_EACH_INPUT_STATEMENT (is)
1469 if (is->the_bfd->my_archive)
1471 int idata2 = 0, reloc_count=0, is_imp = 0;
1474 /* See if this is an import library thunk. */
1475 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1477 if (strcmp (sec->name, ".idata\$2") == 0)
1479 if (CONST_STRNEQ (sec->name, ".idata\$"))
1481 reloc_count += sec->reloc_count;
1484 if (is_imp && !idata2 && reloc_count)
1486 /* It is, look for the reference to head and see if it's
1487 from our own library. */
1488 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1496 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1500 if (!bfd_generic_link_read_symbols (is->the_bfd))
1502 einfo (_("%F%P: %pB: could not read symbols: %E\n"),
1506 symbols = bfd_get_outsymbols (is->the_bfd);
1508 relocs = xmalloc ((size_t) relsize);
1509 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1514 einfo (_("%X%P: unable to process relocs: %E\n"));
1518 for (i = 0; i < nrelocs; i++)
1520 struct bfd_symbol *s;
1521 struct bfd_link_hash_entry * blhe;
1522 const char *other_bfd_filename;
1525 s = (relocs[i]->sym_ptr_ptr)[0];
1527 if (s->flags & BSF_LOCAL)
1530 /* Thunk section with reloc to another bfd. */
1531 blhe = bfd_link_hash_lookup (link_info.hash,
1533 FALSE, FALSE, TRUE);
1536 || blhe->type != bfd_link_hash_defined)
1540 = blhe->u.def.section->owner->my_archive
1541 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1542 : bfd_get_filename (blhe->u.def.section->owner);
1544 if (filename_cmp (bfd_get_filename
1545 (is->the_bfd->my_archive),
1546 other_bfd_filename) == 0)
1549 /* Rename this implib to match the other one. */
1550 n = xmalloc (strlen (other_bfd_filename) + 1);
1551 strcpy (n, other_bfd_filename);
1552 bfd_set_filename (is->the_bfd->my_archive, n);
1556 /* Note - we do not free the symbols,
1557 they are now cached in the BFD. */
1567 lang_input_statement_type *is2;
1568 lang_input_statement_type *is3;
1570 /* Careful - this is a shell script. Watch those dollar signs! */
1571 /* Microsoft import libraries have every member named the same,
1572 and not in the right order for us to link them correctly. We
1573 must detect these and rename the members so that they'll link
1574 correctly. There are three types of objects: the head, the
1575 thunks, and the sentinel(s). The head is easy; it's the one
1576 with idata2. We assume that the sentinels won't have relocs,
1577 and the thunks will. It's easier than checking the symbol
1578 table for external references. */
1579 LANG_FOR_EACH_INPUT_STATEMENT (is)
1581 if (is->the_bfd->my_archive)
1584 bfd *arch = is->the_bfd->my_archive;
1586 if (cur_arch != arch)
1592 is3 && is3->the_bfd->my_archive == arch;
1593 is3 = (lang_input_statement_type *) is3->next)
1595 /* A MS dynamic import library can also contain static
1596 members, so look for the first element with a .dll
1597 extension, and use that for the remainder of the
1599 pnt = strrchr (is3->the_bfd->filename, '.');
1600 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0)
1608 /* OK, found one. Now look to see if the remaining
1609 (dynamic import) members use the same name. */
1611 is2 && is2->the_bfd->my_archive == arch;
1612 is2 = (lang_input_statement_type *) is2->next)
1614 /* Skip static members, ie anything with a .obj
1616 pnt = strrchr (is2->the_bfd->filename, '.');
1617 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0)
1620 if (filename_cmp (is3->the_bfd->filename,
1621 is2->the_bfd->filename))
1630 /* This fragment might have come from an .obj file in a Microsoft
1631 import, and not an actual import record. If this is the case,
1632 then leave the filename alone. */
1633 pnt = strrchr (is->the_bfd->filename, '.');
1635 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0))
1637 int idata2 = 0, reloc_count=0;
1639 char *new_name, seq;
1641 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1643 if (strcmp (sec->name, ".idata\$2") == 0)
1645 reloc_count += sec->reloc_count;
1648 if (idata2) /* .idata2 is the TOC */
1650 else if (reloc_count > 0) /* thunks */
1655 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1656 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1657 bfd_set_filename (is->the_bfd, new_name);
1659 new_name = xmalloc (strlen (is->filename) + 3);
1660 sprintf (new_name, "%s.%c", is->filename, seq);
1661 is->filename = new_name;
1668 /* The following chunk of code tries to identify jump stubs in
1669 import libraries which are dead code and eliminates them
1670 from the final link. For each exported symbol <sym>, there
1671 is a object file in the import library with a .text section
1672 and several .idata\$* sections. The .text section contains the
1673 symbol definition for <sym> which is a jump stub of the form
1674 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1675 for __imp_<sym> which is the address of the slot for <sym> in
1676 the import address table. When a symbol is imported explicitly
1677 using __declspec(dllimport) declaration, the compiler generates
1678 a reference to __imp_<sym> which directly resolves to the
1679 symbol in .idata\$5, in which case the jump stub code is not
1680 needed. The following code tries to identify jump stub sections
1681 in import libraries which are not referred to by anyone and
1682 marks them for exclusion from the final link. */
1683 LANG_FOR_EACH_INPUT_STATEMENT (is)
1685 if (is->the_bfd->my_archive)
1688 asection *sec, *stub_sec = NULL;
1690 /* See if this is an import library thunk. */
1691 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1693 if (strncmp (sec->name, ".idata\$", 7) == 0)
1695 /* The section containing the jmp stub has code
1697 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1701 if (is_imp && stub_sec)
1704 long nsyms, src_count;
1705 struct bfd_link_hash_entry * blhe;
1707 if (!bfd_generic_link_read_symbols (is->the_bfd))
1709 einfo (_("%F%P: %pB: could not read symbols: %E\n"),
1713 symbols = bfd_get_outsymbols (is->the_bfd);
1714 nsyms = bfd_get_symcount (is->the_bfd);
1716 for (src_count = 0; src_count < nsyms; src_count++)
1718 if (symbols[src_count]->section->id == stub_sec->id)
1720 /* This symbol belongs to the section containing
1722 blhe = bfd_link_hash_lookup (link_info.hash,
1723 symbols[src_count]->name,
1724 FALSE, FALSE, TRUE);
1725 /* If the symbol in the stub section has no other
1726 undefined references, exclude the stub section
1727 from the final link. */
1729 && blhe->type == bfd_link_hash_defined
1730 && blhe->u.undef.next == NULL
1731 && blhe != link_info.hash->undefs_tail)
1732 stub_sec->flags |= SEC_EXCLUDE;
1742 gld_${EMULATION_NAME}_before_allocation (void)
1744 #ifdef TARGET_IS_ppcpe
1745 /* Here we rummage through the found bfds to collect toc information. */
1747 LANG_FOR_EACH_INPUT_STATEMENT (is)
1749 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1751 /* xgettext:c-format */
1752 einfo (_("%P: errors encountered processing file %s\n"), is->filename);
1757 /* We have seen it all. Allocate it, and carry on. */
1758 ppc_allocate_toc_section (&link_info);
1759 #endif /* TARGET_IS_ppcpe */
1761 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
1762 /* FIXME: we should be able to set the size of the interworking stub
1765 Here we rummage through the found bfds to collect glue
1766 information. FIXME: should this be based on a command line
1767 option? krk@cygnus.com. */
1769 LANG_FOR_EACH_INPUT_STATEMENT (is)
1771 if (! bfd_arm_process_before_allocation
1772 (is->the_bfd, & link_info, support_old_code))
1774 /* xgettext:c-format */
1775 einfo (_("%P: errors encountered processing file %s for interworking\n"),
1781 /* We have seen it all. Allocate it, and carry on. */
1782 bfd_arm_allocate_interworking_sections (& link_info);
1783 #endif /* TARGET_IS_armpe || TARGET_IS_arm_wince_pe */
1785 before_allocation_default ();
1789 /* This is called when an input file isn't recognized as a BFD. We
1790 check here for .DEF files and pull them in automatically. */
1793 saw_option (char *option)
1797 for (i = 0; init[i].ptr; i++)
1798 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1799 return init[i].inited;
1802 #endif /* DLL_SUPPORT */
1805 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1808 const char *ext = entry->filename + strlen (entry->filename) - 4;
1810 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
1812 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1816 int i, buflen=0, len;
1819 for (i = 0; i < pe_def_file->num_exports; i++)
1821 len = strlen (pe_def_file->exports[i].internal_name);
1822 if (buflen < len + 2)
1826 buf = xmalloc (buflen);
1828 for (i = 0; i < pe_def_file->num_exports; i++)
1830 struct bfd_link_hash_entry *h;
1832 sprintf (buf, "%s%s", U (""),
1833 pe_def_file->exports[i].internal_name);
1835 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1836 if (h == (struct bfd_link_hash_entry *) NULL)
1837 einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n"));
1838 if (h->type == bfd_link_hash_new)
1840 h->type = bfd_link_hash_undefined;
1841 h->u.undef.abfd = NULL;
1842 bfd_link_add_undef (link_info.hash, h);
1847 /* def_file_print (stdout, pe_def_file); */
1848 if (pe_def_file->is_dll == 1)
1849 link_info.type = type_dll;
1851 if (pe_def_file->base_address != (bfd_vma)(-1))
1854 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1855 = init[IMAGEBASEOFF].value
1856 = pe_def_file->base_address;
1857 init[IMAGEBASEOFF].inited = 1;
1858 if (image_base_statement)
1859 image_base_statement->exp
1860 = exp_assign ("__image_base__", exp_intop (pe.ImageBase),
1864 if (pe_def_file->stack_reserve != -1
1865 && ! saw_option ("__size_of_stack_reserve__"))
1867 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1868 if (pe_def_file->stack_commit != -1)
1869 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1871 if (pe_def_file->heap_reserve != -1
1872 && ! saw_option ("__size_of_heap_reserve__"))
1874 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1875 if (pe_def_file->heap_commit != -1)
1876 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1886 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1889 #ifdef TARGET_IS_i386pe
1890 pe_dll_id_target ("pei-i386");
1892 #ifdef TARGET_IS_shpe
1893 pe_dll_id_target ("pei-shl");
1895 #ifdef TARGET_IS_armpe
1896 pe_dll_id_target ("pei-arm-little");
1898 #ifdef TARGET_IS_arm_wince_pe
1899 pe_dll_id_target ("pei-arm-wince-little");
1901 if (pe_bfd_is_dll (entry->the_bfd))
1902 return pe_implied_import_dll (entry->filename);
1908 gld_${EMULATION_NAME}_finish (void)
1910 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
1911 struct bfd_link_hash_entry * h;
1913 if (thumb_entry_symbol != NULL)
1915 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1916 FALSE, FALSE, TRUE);
1918 if (h != (struct bfd_link_hash_entry *) NULL
1919 && (h->type == bfd_link_hash_defined
1920 || h->type == bfd_link_hash_defweak)
1921 && h->u.def.section->output_section != NULL)
1923 static char buffer[32];
1926 /* Special procesing is required for a Thumb entry symbol. The
1927 bottom bit of its address must be set. */
1928 val = (h->u.def.value
1929 + bfd_section_vma (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_wince_pe) */
1954 if (bfd_link_pic (&link_info)
1955 #if !defined(TARGET_IS_shpe)
1956 || pe_dll_enable_reloc_section
1957 || (!bfd_link_relocatable (&link_info)
1958 && pe_def_file->num_exports != 0)
1962 pe_dll_fill_sections (link_info.output_bfd, &link_info);
1963 if (command_line.out_implib_filename)
1964 pe_dll_generate_implib (pe_def_file, command_line.out_implib_filename,
1967 #if defined(TARGET_IS_shpe)
1968 /* ARM doesn't need relocs. */
1971 pe_exe_fill_sections (link_info.output_bfd, &link_info);
1975 if (pe_out_def_filename)
1976 pe_dll_generate_def_file (pe_out_def_filename);
1977 #endif /* DLL_SUPPORT */
1979 /* I don't know where .idata gets set as code, but it shouldn't be. */
1981 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1985 asec->flags &= ~SEC_CODE;
1986 asec->flags |= SEC_DATA;
1992 /* Place an orphan section.
1994 We use this to put sections in a reasonable place in the file, and
1995 to ensure that they are aligned as required.
1997 We handle grouped sections here as well. A section named .foo\$nn
1998 goes into the output section .foo. All grouped sections are sorted
2001 Grouped sections for the default sections are handled by the
2002 default linker script using wildcards, and are sorted by
2005 static lang_output_section_statement_type *
2006 gld_${EMULATION_NAME}_place_orphan (asection *s,
2007 const char *secname,
2010 const char *orig_secname = secname;
2011 char *dollar = NULL;
2012 lang_output_section_statement_type *os;
2013 lang_statement_list_type add_child;
2014 lang_output_section_statement_type *match_by_name = NULL;
2015 lang_statement_union_type **pl;
2017 /* Look through the script to see where to place this section. */
2018 if (!bfd_link_relocatable (&link_info)
2019 && (dollar = strchr (secname, '\$')) != NULL)
2021 size_t len = dollar - secname;
2022 char *newname = xmalloc (len + 1);
2023 memcpy (newname, secname, len);
2024 newname[len] = '\0';
2028 lang_list_init (&add_child);
2031 if (constraint == 0)
2032 for (os = lang_output_section_find (secname);
2034 os = next_matching_output_section_statement (os, 0))
2036 /* If we don't match an existing output section, tell
2037 lang_insert_orphan to create a new output section. */
2038 constraint = SPECIAL;
2040 if (os->bfd_section != NULL
2041 && (os->bfd_section->flags == 0
2042 || ((s->flags ^ os->bfd_section->flags)
2043 & (SEC_LOAD | SEC_ALLOC)) == 0))
2045 /* We already have an output section statement with this
2046 name, and its bfd section has compatible flags.
2047 If the section already exists but does not have any flags set,
2048 then it has been created by the linker, probably as a result of
2049 a --section-start command line switch. */
2050 lang_add_section (&add_child, s, NULL, os);
2054 /* Save unused output sections in case we can match them
2055 against orphans later. */
2056 if (os->bfd_section == NULL)
2060 /* If we didn't match an active output section, see if we matched an
2061 unused one and use that. */
2062 if (os == NULL && match_by_name)
2064 lang_add_section (&match_by_name->children, s, NULL, match_by_name);
2065 return match_by_name;
2070 static struct orphan_save hold[] =
2073 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
2076 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
2079 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
2082 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
2088 enum orphan_save_index
2096 static int orphan_init_done = 0;
2097 struct orphan_save *place;
2098 lang_output_section_statement_type *after;
2099 etree_type *address;
2103 if (!orphan_init_done)
2105 struct orphan_save *ho;
2106 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
2107 if (ho->name != NULL)
2109 ho->os = lang_output_section_find (ho->name);
2110 if (ho->os != NULL && ho->os->flags == 0)
2111 ho->os->flags = ho->flags;
2113 orphan_init_done = 1;
2117 if (!bfd_link_relocatable (&link_info))
2120 while ((nexts = bfd_get_next_section_by_name (nexts->owner,
2122 if (nexts->output_section == NULL
2123 && (nexts->flags & SEC_EXCLUDE) == 0
2124 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
2125 && (nexts->owner->flags & DYNAMIC) == 0
2126 && !bfd_input_just_syms (nexts->owner))
2127 flags = (((flags ^ SEC_READONLY)
2128 | (nexts->flags ^ SEC_READONLY))
2132 /* Try to put the new output section in a reasonable place based
2133 on the section name and section flags. */
2136 if ((flags & SEC_ALLOC) == 0)
2138 else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2139 place = &hold[orphan_bss];
2140 else if ((flags & SEC_READONLY) == 0)
2141 place = &hold[orphan_data];
2142 else if ((flags & SEC_CODE) == 0)
2144 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
2145 : &hold[orphan_rodata]);
2148 place = &hold[orphan_text];
2153 if (place->os == NULL)
2154 place->os = lang_output_section_find (place->name);
2157 after = lang_output_section_find_by_flags (s, flags, &place->os,
2160 /* *ABS* is always the first output section statement. */
2161 after = (void *) lang_os_list.head;
2164 /* All sections in an executable must be aligned to a page boundary.
2165 In a relocatable link, just preserve the incoming alignment; the
2166 address is discarded by lang_insert_orphan in that case, anyway. */
2167 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2168 os = lang_insert_orphan (s, secname, constraint, after, place, address,
2170 if (bfd_link_relocatable (&link_info))
2172 os->section_alignment = exp_intop (1U << s->alignment_power);
2173 os->bfd_section->alignment_power = s->alignment_power;
2177 /* If the section name has a '\$', sort it with the other '\$'
2179 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2181 lang_input_section_type *ls;
2184 if ((*pl)->header.type != lang_input_section_enum)
2187 ls = &(*pl)->input_section;
2189 lname = bfd_section_name (ls->section);
2190 if (strchr (lname, '\$') != NULL
2191 && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2195 if (add_child.head != NULL)
2197 *add_child.tail = *pl;
2198 *pl = add_child.head;
2205 gld_${EMULATION_NAME}_open_dynamic_archive
2206 (const char *arch ATTRIBUTE_UNUSED,
2207 search_dirs_type *search,
2208 lang_input_statement_type *entry)
2212 const char * format;
2213 bfd_boolean use_prefix;
2217 /* Preferred explicit import library for dll's. */
2218 { "lib%s.dll.a", FALSE },
2219 /* Alternate explicit import library for dll's. */
2220 { "%s.dll.a", FALSE },
2221 /* "libfoo.a" could be either an import lib or a static lib.
2222 For backwards compatibility, libfoo.a needs to precede
2223 libfoo.dll and foo.dll in the search. */
2224 { "lib%s.a", FALSE },
2225 /* The 'native' spelling of an import lib name is "foo.lib". */
2226 { "%s.lib", FALSE },
2227 /* PR 22948 - Check for an import library. */
2228 { "lib%s.lib", FALSE },
2230 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
2231 { "%s%s.dll", TRUE },
2233 /* Try "libfoo.dll" (default preferred dll name). */
2234 { "lib%s.dll", FALSE },
2235 /* Finally try 'native' dll name "foo.dll". */
2236 { "%s.dll", FALSE },
2237 /* Note: If adding more formats to this table, make sure to check to
2238 see if their length is longer than libname_fmt[0].format, and if
2239 so, update the call to xmalloc() below. */
2242 static unsigned int format_max_len = 0;
2243 const char * filename;
2249 if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
2252 filename = entry->filename;
2254 if (format_max_len == 0)
2255 /* We need to allow space in the memory that we are going to allocate
2256 for the characters in the format string. Since the format array is
2257 static we only need to calculate this information once. In theory
2258 this value could also be computed statically, but this introduces
2259 the possibility for a discrepancy and hence a possible memory
2260 corruption. The lengths we compute here will be too long because
2261 they will include any formating characters (%s) in the strings, but
2262 this will not matter. */
2263 for (i = 0; libname_fmt[i].format; i++)
2264 if (format_max_len < strlen (libname_fmt[i].format))
2265 format_max_len = strlen (libname_fmt[i].format);
2267 full_string = xmalloc (strlen (search->name)
2271 + (pe_dll_search_prefix
2272 ? strlen (pe_dll_search_prefix) : 0)
2274 /* Allow for the terminating NUL and for the path
2275 separator character that is inserted between
2276 search->name and the start of the format string. */
2279 sprintf (full_string, "%s/", search->name);
2280 base_string = full_string + strlen (full_string);
2282 for (i = 0; libname_fmt[i].format; i++)
2285 if (libname_fmt[i].use_prefix)
2287 if (!pe_dll_search_prefix)
2289 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
2293 sprintf (base_string, libname_fmt[i].format, filename);
2295 if (ldfile_try_open_bfd (full_string, entry))
2299 if (!libname_fmt[i].format)
2305 entry->filename = full_string;
2311 gld_${EMULATION_NAME}_find_potential_libraries
2312 (char *name, lang_input_statement_type *entry)
2314 return ldfile_open_file_search (name, entry, "", ".lib");
2318 gld_${EMULATION_NAME}_get_script (int *isfile)
2320 # Scripts compiled in.
2321 # sed commands to quote an ld script as a C string.
2322 sc="-f stringify.sed"
2328 if (bfd_link_relocatable (&link_info) && config.build_constructors)
2331 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2332 echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
2333 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2334 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2335 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2336 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2337 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2338 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2339 echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c
2340 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
2342 echo ' ; else return' >> e${EMULATION_NAME}.c
2343 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2344 echo '; }' >> e${EMULATION_NAME}.c
2349 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2351 gld_${EMULATION_NAME}_before_parse,
2354 gld_${EMULATION_NAME}_after_parse,
2355 gld_${EMULATION_NAME}_after_open,
2356 after_check_relocs_default,
2357 before_place_orphans_default,
2358 after_allocation_default,
2359 set_output_arch_default,
2360 ldemul_default_target,
2361 gld_${EMULATION_NAME}_before_allocation,
2362 gld_${EMULATION_NAME}_get_script,
2363 "${EMULATION_NAME}",
2365 gld_${EMULATION_NAME}_finish,
2366 NULL, /* Create output section statements. */
2367 gld_${EMULATION_NAME}_open_dynamic_archive,
2368 gld_${EMULATION_NAME}_place_orphan,
2369 gld_${EMULATION_NAME}_set_symbols,
2370 NULL, /* parse_args */
2371 gld${EMULATION_NAME}_add_options,
2372 gld${EMULATION_NAME}_handle_option,
2373 gld_${EMULATION_NAME}_unrecognized_file,
2374 gld_${EMULATION_NAME}_list_options,
2375 gld_${EMULATION_NAME}_recognized_file,
2376 gld_${EMULATION_NAME}_find_potential_libraries,
2377 NULL, /* new_vers_pattern. */
2378 NULL, /* extra_map_file_text. */
2379 ${LDEMUL_EMIT_CTF_EARLY-NULL},
2380 ${LDEMUL_EXAMINE_STRTAB_FOR_CTF-NULL}