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 /* Get size of constant string for a possible underscore prefixed
390 #define U_SIZE(CSTR) \
391 (sizeof (CSTR) + (is_underscoring () == 0 ? 0 : 1))
393 #define D(field,symbol,def,usc) {&pe.field, sizeof (pe.field), def, symbol, 0, usc}
395 static definfo init[] =
397 /* imagebase must be first */
398 #define IMAGEBASEOFF 0
399 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE),
401 {&dll, sizeof(dll), 0, "__dll__", 0, FALSE},
402 #define MSIMAGEBASEOFF 2
403 D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE),
404 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE),
405 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE),
406 D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE),
407 D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE),
408 D(MajorImageVersion,"__major_image_version__", 1, FALSE),
409 D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
410 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
411 D(MajorSubsystemVersion,"__major_subsystem_version__", 3, FALSE),
413 D(MajorSubsystemVersion,"__major_subsystem_version__", 4, FALSE),
415 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0, FALSE),
416 D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE),
417 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE),
418 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE),
419 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE),
420 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE),
421 D(LoaderFlags,"__loader_flags__", 0x0, FALSE),
422 D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE),
423 { NULL, 0, 0, NULL, 0 , FALSE}
428 gld_${EMULATION_NAME}_list_options (FILE *file)
430 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
431 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
432 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
433 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
434 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
435 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
436 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
437 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
438 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
439 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
440 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
441 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
442 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
443 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
444 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
445 fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n"));
446 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
447 fprintf (file, _(" --[no-]insert-timestamp Use a real timestamp rather than zero (default).\n"));
448 fprintf (file, _(" This makes binaries non-deterministic\n"));
450 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
451 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
452 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
453 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
454 fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n"));
455 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
456 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
457 fprintf (file, _(" Exclude objects, archive members from auto\n"));
458 fprintf (file, _(" export, place into import library instead.\n"));
459 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
460 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
461 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
462 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports\n"));
463 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
464 create __imp_<SYMBOL> as well.\n"));
465 fprintf (file, _(" --enable-auto-image-base[=<address>] Automatically choose image base for DLLs\n\
466 (optionally starting with address) unless\n\
467 specifically set with --image-base\n"));
468 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
469 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
470 an importlib, use <string><basename>.dll\n\
471 in preference to lib<basename>.dll \n"));
472 fprintf (file, _(" --enable-auto-import Do sophisticated linking of _sym to\n\
473 __imp_sym for DATA references\n"));
474 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
475 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
476 adding pseudo-relocations resolved at\n\
478 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
479 auto-imported DATA.\n"));
480 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
481 or linking to DLLs (esp. auto-import)\n"));
483 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
484 greater than 2 gigabytes\n"));
485 fprintf (file, _(" --disable-large-address-aware Executable does not support virtual\n\
486 addresses greater than 2 gigabytes\n"));
487 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
488 executable image files\n"));
489 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
490 in object files\n"));
491 fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\
492 address space layout randomization (ASLR)\n"));
493 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
494 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
495 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
496 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
497 be called in this image\n"));
498 fprintf (file, _(" --no-bind Do not bind this image\n"));
499 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
500 fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
501 fprintf (file, _(" --build-id[=STYLE] Generate build ID\n"));
506 set_pe_name (char *name, long val)
511 /* Find the name and set it. */
512 for (i = 0; init[i].ptr; i++)
514 if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
518 if (strcmp (name,"__image_base__") == 0)
519 set_pe_name (U ("__ImageBase"), val);
527 set_entry_point (void)
530 const char *initial_symbol_char;
540 { 1, "NtProcessStartup" },
541 { 2, "WinMainCRTStartup" },
542 { 3, "mainCRTStartup" },
543 { 7, "__PosixProcessStartup"},
544 { 9, "WinMainCRTStartup" },
545 {14, "mainCRTStartup" },
549 /* Entry point name for arbitrary subsystem numbers. */
550 static const char default_entry[] = "mainCRTStartup";
552 if (bfd_link_pic (&link_info) || dll)
554 #if defined (TARGET_IS_i386pe)
555 entry = "DllMainCRTStartup@12";
557 entry = "DllMainCRTStartup";
562 for (i = 0; v[i].entry; i++)
563 if (v[i].value == pe_subsystem)
566 /* If no match, use the default. */
567 if (v[i].entry != NULL)
570 entry = default_entry;
573 initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
575 if (*initial_symbol_char != '\0')
579 /* lang_default_entry expects its argument to be permanently
580 allocated, so we don't free this string. */
581 alc_entry = xmalloc (strlen (initial_symbol_char)
584 strcpy (alc_entry, initial_symbol_char);
585 strcat (alc_entry, entry);
589 lang_default_entry (entry);
593 set_pe_subsystem (void)
599 unsigned long temp_subsystem;
616 /* Check for the presence of a version number. */
617 sver = strchr (optarg, ':');
619 len = strlen (optarg);
623 set_pe_name ("__major_subsystem_version__",
624 strtoul (sver + 1, &end, 0));
626 set_pe_name ("__minor_subsystem_version__",
627 strtoul (end + 1, &end, 0));
629 einfo (_("%P: warning: bad version number in -subsystem option\n"));
632 /* Check for numeric subsystem. */
633 temp_subsystem = strtoul (optarg, & end, 0);
634 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
636 /* Search list for a numeric match to use its entry point. */
637 for (i = 0; v[i].name; i++)
638 if (v[i].value == (int) temp_subsystem)
641 /* Use this subsystem. */
642 pe_subsystem = (int) temp_subsystem;
646 /* Search for subsystem by name. */
647 for (i = 0; v[i].name; i++)
648 if (strncmp (optarg, v[i].name, len) == 0
649 && v[i].name[len] == '\0')
652 if (v[i].name == NULL)
654 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
658 pe_subsystem = v[i].value;
661 set_pe_name ("__subsystem__", pe_subsystem);
668 set_pe_value (char *name)
672 set_pe_name (name, strtoul (optarg, &end, 0));
675 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
682 set_pe_stack_heap (char *resname, char *comname)
684 set_pe_value (resname);
689 set_pe_value (comname);
692 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
695 #define DEFAULT_BUILD_ID_STYLE "md5"
698 gld${EMULATION_NAME}_handle_option (int optc)
705 case OPTION_BASE_FILE:
706 link_info.base_file = fopen (optarg, FOPEN_WB);
707 if (link_info.base_file == NULL)
708 einfo (_("%F%P: cannot open base file %s\n"), optarg);
713 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
716 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
718 case OPTION_SUBSYSTEM:
721 case OPTION_MAJOR_OS_VERSION:
722 set_pe_value ("__major_os_version__");
724 case OPTION_MINOR_OS_VERSION:
725 set_pe_value ("__minor_os_version__");
727 case OPTION_MAJOR_SUBSYSTEM_VERSION:
728 set_pe_value ("__major_subsystem_version__");
730 case OPTION_MINOR_SUBSYSTEM_VERSION:
731 set_pe_value ("__minor_subsystem_version__");
733 case OPTION_MAJOR_IMAGE_VERSION:
734 set_pe_value ("__major_image_version__");
736 case OPTION_MINOR_IMAGE_VERSION:
737 set_pe_value ("__minor_image_version__");
739 case OPTION_FILE_ALIGNMENT:
740 set_pe_value ("__file_alignment__");
742 case OPTION_SECTION_ALIGNMENT:
743 set_pe_value ("__section_alignment__");
746 set_pe_name ("__dll__", 1);
748 case OPTION_IMAGE_BASE:
749 set_pe_value ("__image_base__");
751 case OPTION_SUPPORT_OLD_CODE:
752 support_old_code = 1;
754 case OPTION_THUMB_ENTRY:
755 thumb_entry_symbol = optarg;
757 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
758 pe_use_nul_prefixed_import_tables = TRUE;
760 case OPTION_NO_LEADING_UNDERSCORE:
761 pe_leading_underscore = 0;
763 case OPTION_LEADING_UNDERSCORE:
764 pe_leading_underscore = 1;
766 case OPTION_INSERT_TIMESTAMP:
767 insert_timestamp = TRUE;
769 case OPTION_NO_INSERT_TIMESTAMP:
770 insert_timestamp = FALSE;
774 pe_out_def_filename = xstrdup (optarg);
776 case OPTION_EXPORT_ALL:
777 pe_dll_export_everything = 1;
779 case OPTION_EXCLUDE_SYMBOLS:
780 pe_dll_add_excludes (optarg, EXCLUDESYMS);
782 case OPTION_EXCLUDE_ALL_SYMBOLS:
783 pe_dll_exclude_all_symbols = 1;
785 case OPTION_EXCLUDE_LIBS:
786 pe_dll_add_excludes (optarg, EXCLUDELIBS);
788 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
789 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
791 case OPTION_KILL_ATS:
794 case OPTION_STDCALL_ALIASES:
795 pe_dll_stdcall_aliases = 1;
797 case OPTION_ENABLE_STDCALL_FIXUP:
798 pe_enable_stdcall_fixup = 1;
800 case OPTION_DISABLE_STDCALL_FIXUP:
801 pe_enable_stdcall_fixup = 0;
803 case OPTION_WARN_DUPLICATE_EXPORTS:
804 pe_dll_warn_dup_exports = 1;
806 case OPTION_IMP_COMPAT:
807 pe_dll_compat_implib = 1;
809 case OPTION_ENABLE_AUTO_IMAGE_BASE:
810 pe_enable_auto_image_base = 1;
811 if (optarg && *optarg)
814 pe_auto_image_base = strtoul (optarg, &end, 0);
815 /* XXX should check that we actually parsed something */
818 case OPTION_DISABLE_AUTO_IMAGE_BASE:
819 pe_enable_auto_image_base = 0;
821 case OPTION_DLL_SEARCH_PREFIX:
822 pe_dll_search_prefix = xstrdup (optarg);
824 case OPTION_NO_DEFAULT_EXCLUDES:
825 pe_dll_do_default_excludes = 0;
827 case OPTION_DLL_ENABLE_AUTO_IMPORT:
828 link_info.pei386_auto_import = 1;
830 case OPTION_DLL_DISABLE_AUTO_IMPORT:
831 link_info.pei386_auto_import = 0;
833 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
834 link_info.pei386_runtime_pseudo_reloc =
835 DEFAULT_PSEUDO_RELOC_VERSION;
837 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
838 link_info.pei386_runtime_pseudo_reloc = 1;
840 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
841 link_info.pei386_runtime_pseudo_reloc = 2;
843 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
844 link_info.pei386_runtime_pseudo_reloc = 0;
846 case OPTION_ENABLE_EXTRA_PE_DEBUG:
847 pe_dll_extra_pe_debug = 1;
850 case OPTION_LARGE_ADDRESS_AWARE:
851 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
853 case OPTION_DISABLE_LARGE_ADDRESS_AWARE:
854 real_flags &= ~ IMAGE_FILE_LARGE_ADDRESS_AWARE;
856 case OPTION_ENABLE_LONG_SECTION_NAMES:
857 pe_use_coff_long_section_names = 1;
859 case OPTION_DISABLE_LONG_SECTION_NAMES:
860 pe_use_coff_long_section_names = 0;
862 /* Get DLLCharacteristics bits */
863 case OPTION_DYNAMIC_BASE:
864 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
866 case OPTION_FORCE_INTEGRITY:
867 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
869 case OPTION_NX_COMPAT:
870 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
872 case OPTION_NO_ISOLATION:
873 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
876 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
879 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
881 case OPTION_WDM_DRIVER:
882 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
884 case OPTION_TERMINAL_SERVER_AWARE:
885 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
887 case OPTION_BUILD_ID:
888 if (emit_build_id != NULL)
890 free ((char *) emit_build_id);
891 emit_build_id = NULL;
894 optarg = DEFAULT_BUILD_ID_STYLE;
895 if (strcmp (optarg, "none"))
896 emit_build_id = xstrdup (optarg);
900 /* Set DLLCharacteristics bits */
901 set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
909 strhash (const char *str)
911 const unsigned char *s;
918 s = (const unsigned char *) str;
919 while ((c = *s++) != '\0')
921 hash += c + (c << 17);
925 hash += len + (len << 17);
931 /* Use the output file to create a image base for relocatable DLLs. */
934 compute_dll_image_base (const char *ofile)
936 unsigned long hash = strhash (ofile);
937 return pe_auto_image_base + ((hash << 16) & 0x0FFC0000);
941 /* Assign values to the special symbols before the linker script is
945 gld_${EMULATION_NAME}_set_symbols (void)
947 /* Run through and invent symbols for all the
948 names and insert the defaults. */
953 if (!init[IMAGEBASEOFF].inited)
955 if (bfd_link_relocatable (&link_info))
956 init[IMAGEBASEOFF].value = 0;
957 else if (init[DLLOFF].value || bfd_link_dll (&link_info))
960 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base
961 ? compute_dll_image_base (output_filename)
962 : NT_DLL_IMAGE_BASE);
964 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
968 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
969 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
972 /* Don't do any symbol assignments if this is a relocatable link. */
973 if (bfd_link_relocatable (&link_info))
976 /* Glue the assignments into the abs section. */
977 push_stat_ptr (&abs_output_section->children);
979 for (j = 0; init[j].ptr; j++)
981 long val = init[j].value;
982 lang_assignment_statement_type *rv;
984 rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j),
985 exp_intop (val), FALSE));
986 if (init[j].size == sizeof (short))
987 *(short *) init[j].ptr = val;
988 else if (init[j].size == sizeof (int))
989 *(int *) init[j].ptr = val;
990 else if (init[j].size == sizeof (long))
991 *(long *) init[j].ptr = val;
992 /* This might be a long long or other special type. */
993 else if (init[j].size == sizeof (bfd_vma))
994 *(bfd_vma *) init[j].ptr = val;
996 if (j == IMAGEBASEOFF)
997 image_base_statement = rv;
999 /* Restore the pointer. */
1002 if (pe.FileAlignment > pe.SectionAlignment)
1004 einfo (_("%P: warning, file alignment > section alignment.\n"));
1008 /* This is called after the linker script and the command line options
1012 gld_${EMULATION_NAME}_after_parse (void)
1014 /* PR ld/6744: Warn the user if they have used an ELF-only
1015 option hoping it will work on PE. */
1016 if (link_info.export_dynamic)
1017 einfo (_("%P: warning: --export-dynamic is not supported for PE "
1018 "targets, did you mean --export-all-symbols?\n"));
1022 after_parse_default ();
1025 /* pe-dll.c directly accesses pe_data_import_dll,
1026 so it must be defined outside of #ifdef DLL_SUPPORT.
1027 Note - this variable is deliberately not initialised.
1028 This allows it to be treated as a common varaible, and only
1029 exist in one incarnation in a multiple target enabled linker. */
1030 char * pe_data_import_dll;
1033 static struct bfd_link_hash_entry *pe_undef_found_sym;
1036 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
1040 const char *hs = h->root.string;
1042 sl = strlen (string);
1043 if (h->type == bfd_link_hash_defined
1044 && ((*hs == '@' && *string == '_'
1045 && strncmp (hs + 1, string + 1, sl - 1) == 0)
1046 || strncmp (hs, string, sl) == 0)
1047 && h->root.string[sl] == '@')
1049 pe_undef_found_sym = h;
1055 /* Change UNDEF to a defined symbol, taking data from SYM. */
1058 change_undef (struct bfd_link_hash_entry * undef,
1059 struct bfd_link_hash_entry * sym)
1061 static bfd_boolean gave_warning_message = FALSE;
1063 undef->type = bfd_link_hash_defined;
1064 undef->u.def.value = sym->u.def.value;
1065 undef->u.def.section = sym->u.def.section;
1067 if (pe_enable_stdcall_fixup == -1)
1069 einfo (_("Warning: resolving %s by linking to %s\n"),
1070 undef->root.string, sym->root.string);
1072 if (! gave_warning_message)
1074 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1075 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1076 gave_warning_message = TRUE;
1080 /* PR 19803: Make sure that the linked symbol is not garbage collected. */
1081 lang_add_gc_name (sym->root.string);
1085 pe_fixup_stdcalls (void)
1087 struct bfd_link_hash_entry *undef, *sym;
1089 if (pe_dll_extra_pe_debug)
1090 printf ("%s\n", __FUNCTION__);
1092 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1093 if (undef->type == bfd_link_hash_undefined)
1095 const char * name = undef->root.string;
1097 int lead_at = (*name == '@');
1100 at = strchr (name + 1, '@');
1102 at = strchr (name, '@');
1106 /* The symbol is a stdcall symbol, so let's look for a
1107 cdecl symbol with the same name and resolve to that. */
1108 char *cname = xstrdup (name);
1113 * strchr (cname, '@') = 0;
1114 sym = bfd_link_hash_lookup (link_info.hash, cname, FALSE, FALSE, TRUE);
1116 if (sym && sym->type == bfd_link_hash_defined)
1117 change_undef (undef, sym);
1121 /* The symbol is a cdecl symbol, so we look for stdcall
1122 symbols - which means scanning the whole symbol table. */
1123 pe_undef_found_sym = NULL;
1124 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
1126 if (pe_undef_found_sym)
1127 change_undef (undef, pe_undef_found_sym);
1133 make_import_fixup (arelent *rel, asection *s, char *name)
1135 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1138 if (pe_dll_extra_pe_debug)
1139 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1140 (unsigned long) rel->address, (long) rel->addend);
1142 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
1143 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
1144 s->owner, s, rel->address);
1146 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend), name);
1152 pe_find_data_imports (void)
1154 struct bfd_link_hash_entry *undef, *sym;
1158 if (link_info.pei386_auto_import == 0)
1162 for (undef = link_info.hash->undefs; undef; undef = undef->u.undef.next)
1164 if (undef->type == bfd_link_hash_undefined)
1166 size_t len = strlen (undef->root.string);
1174 /* We are being a bit cunning here. The buffer will have space for
1175 prefixes at the beginning. The prefix is modified here and in a
1176 number of functions called from this function. */
1177 #define PREFIX_LEN 32
1178 buf = xmalloc (PREFIX_LEN + namelen + 1);
1179 name = buf + PREFIX_LEN;
1181 for (undef = link_info.hash->undefs; undef; undef = undef->u.undef.next)
1183 if (undef->type == bfd_link_hash_undefined)
1187 if (pe_dll_extra_pe_debug)
1188 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1190 strcpy (name, undef->root.string);
1191 impname = name - (sizeof "__imp_" - 1);
1192 memcpy (impname, "__imp_", sizeof "__imp_" - 1);
1194 sym = bfd_link_hash_lookup (link_info.hash, impname, 0, 0, 1);
1196 if (sym && sym->type == bfd_link_hash_defined)
1198 bfd *b = sym->u.def.section->owner;
1202 if (link_info.pei386_auto_import == -1)
1204 static bfd_boolean warned = FALSE;
1206 info_msg (_("Info: resolving %s by linking to %s "
1207 "(auto-import)\n"), name, impname);
1209 /* PR linker/4844. */
1213 einfo (_("%P: warning: auto-importing has been activated "
1214 "without --enable-auto-import specified on the "
1215 "command line.\nThis should work unless it "
1216 "involves constant data structures referencing "
1217 "symbols from auto-imported DLLs.\n"));
1221 if (!bfd_generic_link_read_symbols (b))
1223 einfo (_("%B%F: could not read symbols: %E\n"), b);
1227 symbols = bfd_get_outsymbols (b);
1228 nsyms = bfd_get_symcount (b);
1230 for (i = 0; i < nsyms; i++)
1232 if (! CONST_STRNEQ (symbols[i]->name, U ("_head_")))
1235 if (pe_dll_extra_pe_debug)
1236 printf ("->%s\n", symbols[i]->name);
1238 pe_data_import_dll = (char *) (symbols[i]->name
1239 + U_SIZE ("_head_") - 1);
1243 pe_walk_relocs_of_symbol (&link_info, name, make_import_fixup);
1245 /* Let's differentiate it somehow from defined. */
1246 undef->type = bfd_link_hash_defweak;
1247 /* We replace original name with __imp_ prefixed, this
1248 1) may trash memory 2) leads to duplicate symbol generation.
1249 Still, IMHO it's better than having name polluted. */
1250 undef->root.string = sym->root.string;
1251 undef->u.def.value = sym->u.def.value;
1252 undef->u.def.section = sym->u.def.section;
1260 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1262 printf ("+%s\n", h->string);
1266 #endif /* DLL_SUPPORT */
1269 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1271 int *found = (int *) obj;
1272 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1277 pecoff_checksum_contents (bfd *abfd,
1278 void (*process) (const void *, size_t, void *),
1281 file_ptr filepos = (file_ptr) 0;
1288 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
1291 status = bfd_bread (&b, (bfd_size_type) 1, abfd);
1297 (*process) (&b, 1, arg);
1305 write_build_id (bfd *abfd)
1307 struct pe_tdata *t = pe_data (abfd);
1309 struct bfd_link_order *link_order = NULL;
1310 unsigned char *contents;
1312 bfd_size_type build_id_size;
1313 unsigned char *build_id;
1315 /* Find the section the .buildid output section has been merged info. */
1316 for (asec = abfd->sections; asec != NULL; asec = asec->next)
1318 struct bfd_link_order *l = NULL;
1319 for (l = asec->map_head.link_order; l != NULL; l = l->next)
1321 if (l->type == bfd_indirect_link_order)
1323 if (l->u.indirect.section == t->build_id.sec)
1337 einfo (_("%P: warning: .buildid section discarded,"
1338 " --build-id ignored.\n"));
1342 if (t->build_id.sec->contents == NULL)
1343 t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
1344 contents = t->build_id.sec->contents;
1345 size = t->build_id.sec->size;
1347 build_id_size = compute_build_id_size (t->build_id.style);
1348 build_id = xmalloc (build_id_size);
1349 generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
1351 bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
1353 /* Construct a debug directory entry which points to an immediately following CodeView record. */
1354 struct internal_IMAGE_DEBUG_DIRECTORY idd;
1355 idd.Characteristics = 0;
1356 idd.TimeDateStamp = 0;
1357 idd.MajorVersion = 0;
1358 idd.MinorVersion = 0;
1359 idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
1360 idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
1361 idd.AddressOfRawData = asec->vma - ib + link_order->offset
1362 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1363 idd.PointerToRawData = asec->filepos + link_order->offset
1364 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1366 struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
1367 _bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
1369 /* Write the debug directory entry. */
1370 if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
1373 if (bfd_bwrite (contents, size, abfd) != size)
1376 /* Construct the CodeView record. */
1377 CODEVIEW_INFO cvinfo;
1378 cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
1381 /* Zero pad or truncate the generated build_id to fit in the CodeView record. */
1382 memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
1383 memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
1384 ? CV_INFO_SIGNATURE_LENGTH : build_id_size);
1388 /* Write the codeview record. */
1389 if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
1392 /* Record the location of the debug directory in the data directory. */
1393 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
1394 = asec->vma - ib + link_order->offset;
1395 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
1396 = sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1401 /* Make .buildid section, and set up coff_tdata->build_id. */
1403 setup_build_id (bfd *ibfd)
1408 if (!validate_build_id_style (emit_build_id))
1410 einfo (_("%P: warning: unrecognized --build-id style ignored.\n"));
1414 flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
1415 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
1416 s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
1419 struct pe_tdata *t = pe_data (link_info.output_bfd);
1420 t->build_id.after_write_object_contents = &write_build_id;
1421 t->build_id.style = emit_build_id;
1422 t->build_id.sec = s;
1424 /* Section is a fixed size:
1425 One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
1426 pointing at a CV_INFO_PDB70 record containing the build-id, with a
1427 null byte for PdbFileName. */
1428 s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
1429 + sizeof (CV_INFO_PDB70) + 1;
1434 einfo (_("%P: warning: Cannot create .buildid section,"
1435 " --build-id ignored.\n"));
1440 gld_${EMULATION_NAME}_after_open (void)
1442 after_open_default ();
1445 if (pe_dll_extra_pe_debug)
1448 struct bfd_link_hash_entry *sym;
1450 printf ("%s()\n", __FUNCTION__);
1452 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1453 printf ("-%s\n", sym->root.string);
1454 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1456 for (a = link_info.input_bfds; a; a = a->link.next)
1457 printf ("*%s\n",a->filename);
1461 if (emit_build_id != NULL)
1465 /* Find a COFF input. */
1466 for (abfd = link_info.input_bfds;
1467 abfd != (bfd *) NULL; abfd = abfd->link.next)
1468 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
1471 /* If there are no COFF input files do not try to
1472 add a build-id section. */
1474 || !setup_build_id (abfd))
1476 free ((char *) emit_build_id);
1477 emit_build_id = NULL;
1481 /* Pass the wacky PE command line options into the output bfd.
1482 FIXME: This should be done via a function, rather than by
1483 including an internal BFD header. */
1485 if (coff_data (link_info.output_bfd) == NULL
1486 || coff_data (link_info.output_bfd)->pe == 0)
1487 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1488 link_info.output_bfd);
1490 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1491 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1492 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1493 pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
1495 /* At this point we must decide whether to use long section names
1496 in the output or not. If the user hasn't explicitly specified
1497 on the command line, we leave it to the default for the format
1498 (object files yes, image files no), except if there is debug
1499 information present; GDB relies on the long section names to
1500 find it, so enable it in that case. */
1501 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1503 if (bfd_link_relocatable (&link_info))
1504 pe_use_coff_long_section_names = 1;
1507 /* Iterate over all sections of all input BFDs, checking
1508 for any that begin 'debug_' and are long names. */
1509 LANG_FOR_EACH_INPUT_STATEMENT (is)
1511 int found_debug = 0;
1513 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1516 pe_use_coff_long_section_names = 1;
1523 pe_output_file_set_long_section_names (link_info.output_bfd);
1526 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1527 pe_fixup_stdcalls ();
1529 pe_process_import_defs (link_info.output_bfd, &link_info);
1531 pe_find_data_imports ();
1533 /* As possibly new symbols are added by imports, we rerun
1534 stdcall/fastcall fixup here. */
1535 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1536 pe_fixup_stdcalls ();
1538 #if defined (TARGET_IS_i386pe) \
1539 || defined (TARGET_IS_armpe) \
1540 || defined (TARGET_IS_arm_epoc_pe) \
1541 || defined (TARGET_IS_arm_wince_pe)
1542 if (!bfd_link_relocatable (&link_info))
1543 pe_dll_build_sections (link_info.output_bfd, &link_info);
1545 if (bfd_link_pic (&link_info))
1546 pe_dll_build_sections (link_info.output_bfd, &link_info);
1548 pe_exe_build_sections (link_info.output_bfd, &link_info);
1550 #endif /* DLL_SUPPORT */
1552 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1553 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1555 /* The arm backend needs special fields in the output hash structure.
1556 These will only be created if the output format is an arm format,
1557 hence we do not support linking and changing output formats at the
1558 same time. Use a link followed by objcopy to change output formats. */
1559 einfo (_("%F%X%P: error: cannot change output format "
1560 "whilst linking ARM binaries\n"));
1564 /* Find a BFD that can hold the interworking stubs. */
1565 LANG_FOR_EACH_INPUT_STATEMENT (is)
1567 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1574 /* This next chunk of code tries to detect the case where you have
1575 two import libraries for the same DLL (specifically,
1576 symbolically linking libm.a and libc.a in cygwin to
1577 libcygwin.a). In those cases, it's possible for function
1578 thunks from the second implib to be used but without the
1579 head/tail objects, causing an improper import table. We detect
1580 those cases and rename the "other" import libraries to match
1581 the one the head/tail come from, so that the linker will sort
1582 things nicely and produce a valid import table. */
1584 LANG_FOR_EACH_INPUT_STATEMENT (is)
1586 if (is->the_bfd->my_archive)
1588 int idata2 = 0, reloc_count=0, is_imp = 0;
1591 /* See if this is an import library thunk. */
1592 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1594 if (strcmp (sec->name, ".idata\$2") == 0)
1596 if (CONST_STRNEQ (sec->name, ".idata\$"))
1598 reloc_count += sec->reloc_count;
1601 if (is_imp && !idata2 && reloc_count)
1603 /* It is, look for the reference to head and see if it's
1604 from our own library. */
1605 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1613 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1617 if (!bfd_generic_link_read_symbols (is->the_bfd))
1619 einfo (_("%B%F: could not read symbols: %E\n"),
1623 symbols = bfd_get_outsymbols (is->the_bfd);
1625 relocs = xmalloc ((size_t) relsize);
1626 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1631 einfo (_("%X%P: unable to process relocs: %E\n"));
1635 for (i = 0; i < nrelocs; i++)
1637 struct bfd_symbol *s;
1638 struct bfd_link_hash_entry * blhe;
1639 char *other_bfd_filename;
1642 s = (relocs[i]->sym_ptr_ptr)[0];
1644 if (s->flags & BSF_LOCAL)
1647 /* Thunk section with reloc to another bfd. */
1648 blhe = bfd_link_hash_lookup (link_info.hash,
1650 FALSE, FALSE, TRUE);
1653 || blhe->type != bfd_link_hash_defined)
1657 = blhe->u.def.section->owner->my_archive
1658 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1659 : bfd_get_filename (blhe->u.def.section->owner);
1661 if (filename_cmp (bfd_get_filename
1662 (is->the_bfd->my_archive),
1663 other_bfd_filename) == 0)
1666 /* Rename this implib to match the other one. */
1667 n = xmalloc (strlen (other_bfd_filename) + 1);
1668 strcpy (n, other_bfd_filename);
1669 is->the_bfd->my_archive->filename = n;
1673 /* Note - we do not free the symbols,
1674 they are now cached in the BFD. */
1684 lang_input_statement_type *is2;
1685 lang_input_statement_type *is3;
1687 /* Careful - this is a shell script. Watch those dollar signs! */
1688 /* Microsoft import libraries have every member named the same,
1689 and not in the right order for us to link them correctly. We
1690 must detect these and rename the members so that they'll link
1691 correctly. There are three types of objects: the head, the
1692 thunks, and the sentinel(s). The head is easy; it's the one
1693 with idata2. We assume that the sentinels won't have relocs,
1694 and the thunks will. It's easier than checking the symbol
1695 table for external references. */
1696 LANG_FOR_EACH_INPUT_STATEMENT (is)
1698 if (is->the_bfd->my_archive)
1701 bfd *arch = is->the_bfd->my_archive;
1703 if (cur_arch != arch)
1709 is3 && is3->the_bfd->my_archive == arch;
1710 is3 = (lang_input_statement_type *) is3->next)
1712 /* A MS dynamic import library can also contain static
1713 members, so look for the first element with a .dll
1714 extension, and use that for the remainder of the
1716 pnt = strrchr (is3->the_bfd->filename, '.');
1717 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0)
1725 /* OK, found one. Now look to see if the remaining
1726 (dynamic import) members use the same name. */
1728 is2 && is2->the_bfd->my_archive == arch;
1729 is2 = (lang_input_statement_type *) is2->next)
1731 /* Skip static members, ie anything with a .obj
1733 pnt = strrchr (is2->the_bfd->filename, '.');
1734 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0)
1737 if (filename_cmp (is3->the_bfd->filename,
1738 is2->the_bfd->filename))
1747 /* This fragment might have come from an .obj file in a Microsoft
1748 import, and not an actual import record. If this is the case,
1749 then leave the filename alone. */
1750 pnt = strrchr (is->the_bfd->filename, '.');
1752 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0))
1754 int idata2 = 0, reloc_count=0;
1756 char *new_name, seq;
1758 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1760 if (strcmp (sec->name, ".idata\$2") == 0)
1762 reloc_count += sec->reloc_count;
1765 if (idata2) /* .idata2 is the TOC */
1767 else if (reloc_count > 0) /* thunks */
1772 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1773 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1774 is->the_bfd->filename = new_name;
1776 new_name = xmalloc (strlen (is->filename) + 3);
1777 sprintf (new_name, "%s.%c", is->filename, seq);
1778 is->filename = new_name;
1785 /* The following chunk of code tries to identify jump stubs in
1786 import libraries which are dead code and eliminates them
1787 from the final link. For each exported symbol <sym>, there
1788 is a object file in the import library with a .text section
1789 and several .idata\$* sections. The .text section contains the
1790 symbol definition for <sym> which is a jump stub of the form
1791 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1792 for __imp_<sym> which is the address of the slot for <sym> in
1793 the import address table. When a symbol is imported explicitly
1794 using __declspec(dllimport) declaration, the compiler generates
1795 a reference to __imp_<sym> which directly resolves to the
1796 symbol in .idata\$5, in which case the jump stub code is not
1797 needed. The following code tries to identify jump stub sections
1798 in import libraries which are not referred to by anyone and
1799 marks them for exclusion from the final link. */
1800 LANG_FOR_EACH_INPUT_STATEMENT (is)
1802 if (is->the_bfd->my_archive)
1805 asection *sec, *stub_sec = NULL;
1807 /* See if this is an import library thunk. */
1808 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1810 if (strncmp (sec->name, ".idata\$", 7) == 0)
1812 /* The section containing the jmp stub has code
1814 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1818 if (is_imp && stub_sec)
1821 long nsyms, src_count;
1822 struct bfd_link_hash_entry * blhe;
1824 if (!bfd_generic_link_read_symbols (is->the_bfd))
1826 einfo (_("%B%F: could not read symbols: %E\n"),
1830 symbols = bfd_get_outsymbols (is->the_bfd);
1831 nsyms = bfd_get_symcount (is->the_bfd);
1833 for (src_count = 0; src_count < nsyms; src_count++)
1835 if (symbols[src_count]->section->id == stub_sec->id)
1837 /* This symbol belongs to the section containing
1839 blhe = bfd_link_hash_lookup (link_info.hash,
1840 symbols[src_count]->name,
1841 FALSE, FALSE, TRUE);
1842 /* If the symbol in the stub section has no other
1843 undefined references, exclude the stub section
1844 from the final link. */
1846 && blhe->type == bfd_link_hash_defined
1847 && blhe->u.undef.next == NULL
1848 && blhe != link_info.hash->undefs_tail)
1849 stub_sec->flags |= SEC_EXCLUDE;
1859 gld_${EMULATION_NAME}_before_allocation (void)
1861 #ifdef TARGET_IS_ppcpe
1862 /* Here we rummage through the found bfds to collect toc information. */
1864 LANG_FOR_EACH_INPUT_STATEMENT (is)
1866 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1868 /* xgettext:c-format */
1869 einfo (_("Errors encountered processing file %s\n"), is->filename);
1874 /* We have seen it all. Allocate it, and carry on. */
1875 ppc_allocate_toc_section (&link_info);
1876 #endif /* TARGET_IS_ppcpe */
1878 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1879 /* FIXME: we should be able to set the size of the interworking stub
1882 Here we rummage through the found bfds to collect glue
1883 information. FIXME: should this be based on a command line
1884 option? krk@cygnus.com. */
1886 LANG_FOR_EACH_INPUT_STATEMENT (is)
1888 if (! bfd_arm_process_before_allocation
1889 (is->the_bfd, & link_info, support_old_code))
1891 /* xgettext:c-format */
1892 einfo (_("Errors encountered processing file %s for interworking\n"),
1898 /* We have seen it all. Allocate it, and carry on. */
1899 bfd_arm_allocate_interworking_sections (& link_info);
1900 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1902 before_allocation_default ();
1906 /* This is called when an input file isn't recognized as a BFD. We
1907 check here for .DEF files and pull them in automatically. */
1910 saw_option (char *option)
1914 for (i = 0; init[i].ptr; i++)
1915 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1916 return init[i].inited;
1919 #endif /* DLL_SUPPORT */
1922 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1925 const char *ext = entry->filename + strlen (entry->filename) - 4;
1927 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
1929 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1933 int i, buflen=0, len;
1936 for (i = 0; i < pe_def_file->num_exports; i++)
1938 len = strlen (pe_def_file->exports[i].internal_name);
1939 if (buflen < len + 2)
1943 buf = xmalloc (buflen);
1945 for (i = 0; i < pe_def_file->num_exports; i++)
1947 struct bfd_link_hash_entry *h;
1949 sprintf (buf, "%s%s", U (""),
1950 pe_def_file->exports[i].internal_name);
1952 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1953 if (h == (struct bfd_link_hash_entry *) NULL)
1954 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1955 if (h->type == bfd_link_hash_new)
1957 h->type = bfd_link_hash_undefined;
1958 h->u.undef.abfd = NULL;
1959 bfd_link_add_undef (link_info.hash, h);
1964 /* def_file_print (stdout, pe_def_file); */
1965 if (pe_def_file->is_dll == 1)
1966 link_info.type = type_dll;
1968 if (pe_def_file->base_address != (bfd_vma)(-1))
1971 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1972 = init[IMAGEBASEOFF].value
1973 = pe_def_file->base_address;
1974 init[IMAGEBASEOFF].inited = 1;
1975 if (image_base_statement)
1976 image_base_statement->exp
1977 = exp_assign ("__image_base__", exp_intop (pe.ImageBase),
1981 if (pe_def_file->stack_reserve != -1
1982 && ! saw_option ("__size_of_stack_reserve__"))
1984 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1985 if (pe_def_file->stack_commit != -1)
1986 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1988 if (pe_def_file->heap_reserve != -1
1989 && ! saw_option ("__size_of_heap_reserve__"))
1991 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1992 if (pe_def_file->heap_commit != -1)
1993 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
2003 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
2006 #ifdef TARGET_IS_i386pe
2007 pe_dll_id_target ("pei-i386");
2009 #ifdef TARGET_IS_shpe
2010 pe_dll_id_target ("pei-shl");
2012 #ifdef TARGET_IS_armpe
2013 pe_dll_id_target ("pei-arm-little");
2015 #ifdef TARGET_IS_arm_epoc_pe
2016 pe_dll_id_target ("epoc-pei-arm-little");
2018 #ifdef TARGET_IS_arm_wince_pe
2019 pe_dll_id_target ("pei-arm-wince-little");
2021 if (pe_bfd_is_dll (entry->the_bfd))
2022 return pe_implied_import_dll (entry->filename);
2028 gld_${EMULATION_NAME}_finish (void)
2030 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
2031 struct bfd_link_hash_entry * h;
2033 if (thumb_entry_symbol != NULL)
2035 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
2036 FALSE, FALSE, TRUE);
2038 if (h != (struct bfd_link_hash_entry *) NULL
2039 && (h->type == bfd_link_hash_defined
2040 || h->type == bfd_link_hash_defweak)
2041 && h->u.def.section->output_section != NULL)
2043 static char buffer[32];
2046 /* Special procesing is required for a Thumb entry symbol. The
2047 bottom bit of its address must be set. */
2048 val = (h->u.def.value
2049 + bfd_get_section_vma (link_info.output_bfd,
2050 h->u.def.section->output_section)
2051 + h->u.def.section->output_offset);
2055 /* Now convert this value into a string and store it in entry_symbol
2056 where the lang_finish() function will pick it up. */
2060 sprintf_vma (buffer + 2, val);
2062 if (entry_symbol.name != NULL && entry_from_cmdline)
2063 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
2064 thumb_entry_symbol, entry_symbol.name);
2065 entry_symbol.name = buffer;
2068 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
2070 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
2075 if (bfd_link_pic (&link_info)
2076 #if !defined(TARGET_IS_shpe)
2077 || (!bfd_link_relocatable (&link_info)
2078 && pe_def_file->num_exports != 0)
2082 pe_dll_fill_sections (link_info.output_bfd, &link_info);
2083 if (command_line.out_implib_filename)
2084 pe_dll_generate_implib (pe_def_file, command_line.out_implib_filename,
2087 #if defined(TARGET_IS_shpe)
2088 /* ARM doesn't need relocs. */
2091 pe_exe_fill_sections (link_info.output_bfd, &link_info);
2095 if (pe_out_def_filename)
2096 pe_dll_generate_def_file (pe_out_def_filename);
2097 #endif /* DLL_SUPPORT */
2099 /* I don't know where .idata gets set as code, but it shouldn't be. */
2101 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
2105 asec->flags &= ~SEC_CODE;
2106 asec->flags |= SEC_DATA;
2112 /* Place an orphan section.
2114 We use this to put sections in a reasonable place in the file, and
2115 to ensure that they are aligned as required.
2117 We handle grouped sections here as well. A section named .foo\$nn
2118 goes into the output section .foo. All grouped sections are sorted
2121 Grouped sections for the default sections are handled by the
2122 default linker script using wildcards, and are sorted by
2125 static lang_output_section_statement_type *
2126 gld_${EMULATION_NAME}_place_orphan (asection *s,
2127 const char *secname,
2130 const char *orig_secname = secname;
2131 char *dollar = NULL;
2132 lang_output_section_statement_type *os;
2133 lang_statement_list_type add_child;
2134 lang_output_section_statement_type *match_by_name = NULL;
2135 lang_statement_union_type **pl;
2137 /* Look through the script to see where to place this section. */
2138 if (!bfd_link_relocatable (&link_info)
2139 && (dollar = strchr (secname, '\$')) != NULL)
2141 size_t len = dollar - secname;
2142 char *newname = xmalloc (len + 1);
2143 memcpy (newname, secname, len);
2144 newname[len] = '\0';
2148 lang_list_init (&add_child);
2151 if (constraint == 0)
2152 for (os = lang_output_section_find (secname);
2154 os = next_matching_output_section_statement (os, 0))
2156 /* If we don't match an existing output section, tell
2157 lang_insert_orphan to create a new output section. */
2158 constraint = SPECIAL;
2160 if (os->bfd_section != NULL
2161 && (os->bfd_section->flags == 0
2162 || ((s->flags ^ os->bfd_section->flags)
2163 & (SEC_LOAD | SEC_ALLOC)) == 0))
2165 /* We already have an output section statement with this
2166 name, and its bfd section has compatible flags.
2167 If the section already exists but does not have any flags set,
2168 then it has been created by the linker, probably as a result of
2169 a --section-start command line switch. */
2170 lang_add_section (&add_child, s, NULL, os);
2174 /* Save unused output sections in case we can match them
2175 against orphans later. */
2176 if (os->bfd_section == NULL)
2180 /* If we didn't match an active output section, see if we matched an
2181 unused one and use that. */
2182 if (os == NULL && match_by_name)
2184 lang_add_section (&match_by_name->children, s, NULL, match_by_name);
2185 return match_by_name;
2190 static struct orphan_save hold[] =
2193 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
2196 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
2199 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
2202 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
2208 enum orphan_save_index
2216 static int orphan_init_done = 0;
2217 struct orphan_save *place;
2218 lang_output_section_statement_type *after;
2219 etree_type *address;
2223 if (!orphan_init_done)
2225 struct orphan_save *ho;
2226 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
2227 if (ho->name != NULL)
2229 ho->os = lang_output_section_find (ho->name);
2230 if (ho->os != NULL && ho->os->flags == 0)
2231 ho->os->flags = ho->flags;
2233 orphan_init_done = 1;
2237 if (!bfd_link_relocatable (&link_info))
2240 while ((nexts = bfd_get_next_section_by_name (nexts->owner,
2242 if (nexts->output_section == NULL
2243 && (nexts->flags & SEC_EXCLUDE) == 0
2244 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
2245 && (nexts->owner->flags & DYNAMIC) == 0
2246 && nexts->owner->usrdata != NULL
2247 && !(((lang_input_statement_type *) nexts->owner->usrdata)
2249 flags = (((flags ^ SEC_READONLY)
2250 | (nexts->flags ^ SEC_READONLY))
2254 /* Try to put the new output section in a reasonable place based
2255 on the section name and section flags. */
2258 if ((flags & SEC_ALLOC) == 0)
2260 else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2261 place = &hold[orphan_bss];
2262 else if ((flags & SEC_READONLY) == 0)
2263 place = &hold[orphan_data];
2264 else if ((flags & SEC_CODE) == 0)
2266 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
2267 : &hold[orphan_rodata]);
2270 place = &hold[orphan_text];
2275 if (place->os == NULL)
2276 place->os = lang_output_section_find (place->name);
2279 after = lang_output_section_find_by_flags (s, flags, &place->os,
2282 /* *ABS* is always the first output section statement. */
2283 after = (&lang_output_section_statement.head
2284 ->output_section_statement);
2287 /* All sections in an executable must be aligned to a page boundary.
2288 In a relocatable link, just preserve the incoming alignment; the
2289 address is discarded by lang_insert_orphan in that case, anyway. */
2290 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2291 os = lang_insert_orphan (s, secname, constraint, after, place, address,
2293 if (bfd_link_relocatable (&link_info))
2295 os->section_alignment = s->alignment_power;
2296 os->bfd_section->alignment_power = s->alignment_power;
2300 /* If the section name has a '\$', sort it with the other '\$'
2302 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2304 lang_input_section_type *ls;
2307 if ((*pl)->header.type != lang_input_section_enum)
2310 ls = &(*pl)->input_section;
2312 lname = bfd_get_section_name (ls->section->owner, ls->section);
2313 if (strchr (lname, '\$') != NULL
2314 && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2318 if (add_child.head != NULL)
2320 *add_child.tail = *pl;
2321 *pl = add_child.head;
2328 gld_${EMULATION_NAME}_open_dynamic_archive
2329 (const char *arch ATTRIBUTE_UNUSED,
2330 search_dirs_type *search,
2331 lang_input_statement_type *entry)
2335 const char * format;
2336 bfd_boolean use_prefix;
2340 /* Preferred explicit import library for dll's. */
2341 { "lib%s.dll.a", FALSE },
2342 /* Alternate explicit import library for dll's. */
2343 { "%s.dll.a", FALSE },
2344 /* "libfoo.a" could be either an import lib or a static lib.
2345 For backwards compatibility, libfoo.a needs to precede
2346 libfoo.dll and foo.dll in the search. */
2347 { "lib%s.a", FALSE },
2348 /* The 'native' spelling of an import lib name is "foo.lib". */
2349 { "%s.lib", FALSE },
2351 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
2352 { "%s%s.dll", TRUE },
2354 /* Try "libfoo.dll" (default preferred dll name). */
2355 { "lib%s.dll", FALSE },
2356 /* Finally try 'native' dll name "foo.dll". */
2357 { "%s.dll", FALSE },
2358 /* Note: If adding more formats to this table, make sure to check to
2359 see if their length is longer than libname_fmt[0].format, and if
2360 so, update the call to xmalloc() below. */
2363 static unsigned int format_max_len = 0;
2364 const char * filename;
2370 if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
2373 filename = entry->filename;
2375 if (format_max_len == 0)
2376 /* We need to allow space in the memory that we are going to allocate
2377 for the characters in the format string. Since the format array is
2378 static we only need to calculate this information once. In theory
2379 this value could also be computed statically, but this introduces
2380 the possibility for a discrepancy and hence a possible memory
2381 corruption. The lengths we compute here will be too long because
2382 they will include any formating characters (%s) in the strings, but
2383 this will not matter. */
2384 for (i = 0; libname_fmt[i].format; i++)
2385 if (format_max_len < strlen (libname_fmt[i].format))
2386 format_max_len = strlen (libname_fmt[i].format);
2388 full_string = xmalloc (strlen (search->name)
2392 + (pe_dll_search_prefix
2393 ? strlen (pe_dll_search_prefix) : 0)
2395 /* Allow for the terminating NUL and for the path
2396 separator character that is inserted between
2397 search->name and the start of the format string. */
2400 sprintf (full_string, "%s/", search->name);
2401 base_string = full_string + strlen (full_string);
2403 for (i = 0; libname_fmt[i].format; i++)
2406 if (libname_fmt[i].use_prefix)
2408 if (!pe_dll_search_prefix)
2410 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
2414 sprintf (base_string, libname_fmt[i].format, filename);
2416 if (ldfile_try_open_bfd (full_string, entry))
2420 if (!libname_fmt[i].format)
2426 entry->filename = full_string;
2432 gld_${EMULATION_NAME}_find_potential_libraries
2433 (char *name, lang_input_statement_type *entry)
2435 return ldfile_open_file_search (name, entry, "", ".lib");
2439 gld_${EMULATION_NAME}_get_script (int *isfile)
2441 # Scripts compiled in.
2442 # sed commands to quote an ld script as a C string.
2443 sc="-f stringify.sed"
2449 if (bfd_link_relocatable (&link_info) && config.build_constructors)
2452 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2453 echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
2454 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2455 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2456 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2457 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2458 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2459 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2460 echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c
2461 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
2463 echo ' ; else return' >> e${EMULATION_NAME}.c
2464 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2465 echo '; }' >> e${EMULATION_NAME}.c
2470 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2472 gld_${EMULATION_NAME}_before_parse,
2475 gld_${EMULATION_NAME}_after_parse,
2476 gld_${EMULATION_NAME}_after_open,
2477 after_check_relocs_default,
2478 after_allocation_default,
2479 set_output_arch_default,
2480 ldemul_default_target,
2481 gld_${EMULATION_NAME}_before_allocation,
2482 gld_${EMULATION_NAME}_get_script,
2483 "${EMULATION_NAME}",
2485 gld_${EMULATION_NAME}_finish,
2486 NULL, /* Create output section statements. */
2487 gld_${EMULATION_NAME}_open_dynamic_archive,
2488 gld_${EMULATION_NAME}_place_orphan,
2489 gld_${EMULATION_NAME}_set_symbols,
2490 NULL, /* parse_args */
2491 gld${EMULATION_NAME}_add_options,
2492 gld${EMULATION_NAME}_handle_option,
2493 gld_${EMULATION_NAME}_unrecognized_file,
2494 gld_${EMULATION_NAME}_list_options,
2495 gld_${EMULATION_NAME}_recognized_file,
2496 gld_${EMULATION_NAME}_find_potential_libraries,
2497 NULL, /* new_vers_pattern. */
2498 NULL /* extra_map_file_text. */