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${EMULATION_NAME}.c # there, now line numbers match ;-)
11 /* Copyright (C) 1995-2016 Free Software Foundation, Inc.
13 This file is part of the GNU Binutils.
15 This program is free software; you can redistribute it and/or modify
16 it under the terms of the GNU General Public License as published by
17 the Free Software Foundation; either version 3 of the License, or
18 (at your option) any later version.
20 This program is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with this program; if not, write to the Free Software
27 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
28 MA 02110-1301, USA. */
32 /* The original file generated returned different default scripts depending
33 on whether certain switches were set, but these switches pertain to the
34 Linux system and that particular version of coff. In the NT case, we
35 only determine if the subsystem is console or windows in order to select
36 the correct entry point by default. */
38 #define TARGET_IS_${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 == FALSE || (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)
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));
1152 pe_find_data_imports (void)
1154 struct bfd_link_hash_entry *undef, *sym;
1156 if (link_info.pei386_auto_import == 0)
1159 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1161 if (undef->type == bfd_link_hash_undefined)
1163 /* C++ symbols are *long*. */
1164 #define BUF_SIZE 4096
1167 if (pe_dll_extra_pe_debug)
1168 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1170 if (strlen (undef->root.string) > (BUF_SIZE - 6))
1172 /* PR linker/18466. */
1173 einfo (_("%P: internal error: symbol too long: %s\n"),
1174 undef->root.string);
1178 sprintf (buf, "__imp_%s", undef->root.string);
1180 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
1182 if (sym && sym->type == bfd_link_hash_defined)
1184 bfd *b = sym->u.def.section->owner;
1188 if (link_info.pei386_auto_import == -1)
1190 static bfd_boolean warned = FALSE;
1192 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
1193 undef->root.string, buf);
1195 /* PR linker/4844. */
1199 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
1200 This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
1204 if (!bfd_generic_link_read_symbols (b))
1206 einfo (_("%B%F: could not read symbols: %E\n"), b);
1210 symbols = bfd_get_outsymbols (b);
1211 nsyms = bfd_get_symcount (b);
1213 for (i = 0; i < nsyms; i++)
1215 if (! CONST_STRNEQ (symbols[i]->name,
1219 if (pe_dll_extra_pe_debug)
1220 printf ("->%s\n", symbols[i]->name);
1222 pe_data_import_dll = (char *) (symbols[i]->name
1223 + U_SIZE ("_head_") - 1);
1227 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
1230 /* Let's differentiate it somehow from defined. */
1231 undef->type = bfd_link_hash_defweak;
1232 /* We replace original name with __imp_ prefixed, this
1233 1) may trash memory 2) leads to duplicate symbol generation.
1234 Still, IMHO it's better than having name poluted. */
1235 undef->root.string = sym->root.string;
1236 undef->u.def.value = sym->u.def.value;
1237 undef->u.def.section = sym->u.def.section;
1244 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1246 printf ("+%s\n", h->string);
1250 #endif /* DLL_SUPPORT */
1253 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1255 int *found = (int *) obj;
1256 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1261 pecoff_checksum_contents (bfd *abfd,
1262 void (*process) (const void *, size_t, void *),
1265 file_ptr filepos = (file_ptr) 0;
1272 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
1275 status = bfd_bread (&b, (bfd_size_type) 1, abfd);
1281 (*process) (&b, 1, arg);
1289 write_build_id (bfd *abfd)
1291 struct pe_tdata *t = pe_data (abfd);
1293 struct bfd_link_order *link_order = NULL;
1294 unsigned char *contents;
1296 bfd_size_type build_id_size;
1297 unsigned char *build_id;
1299 /* Find the section the .buildid output section has been merged info. */
1300 for (asec = abfd->sections; asec != NULL; asec = asec->next)
1302 struct bfd_link_order *l = NULL;
1303 for (l = asec->map_head.link_order; l != NULL; l = l->next)
1305 if (l->type == bfd_indirect_link_order)
1307 if (l->u.indirect.section == t->build_id.sec)
1321 einfo (_("%P: warning: .buildid section discarded,"
1322 " --build-id ignored.\n"));
1326 if (t->build_id.sec->contents == NULL)
1327 t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
1328 contents = t->build_id.sec->contents;
1329 size = t->build_id.sec->size;
1331 build_id_size = compute_build_id_size (t->build_id.style);
1332 build_id = xmalloc (build_id_size);
1333 generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
1335 bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
1337 /* Construct a debug directory entry which points to an immediately following CodeView record. */
1338 struct internal_IMAGE_DEBUG_DIRECTORY idd;
1339 idd.Characteristics = 0;
1340 idd.TimeDateStamp = 0;
1341 idd.MajorVersion = 0;
1342 idd.MinorVersion = 0;
1343 idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
1344 idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
1345 idd.AddressOfRawData = asec->vma - ib + link_order->offset
1346 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1347 idd.PointerToRawData = asec->filepos + link_order->offset
1348 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1350 struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
1351 _bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
1353 /* Write the debug directory entry. */
1354 if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
1357 if (bfd_bwrite (contents, size, abfd) != size)
1360 /* Construct the CodeView record. */
1361 CODEVIEW_INFO cvinfo;
1362 cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
1365 /* Zero pad or truncate the generated build_id to fit in the CodeView record. */
1366 memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
1367 memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
1368 ? CV_INFO_SIGNATURE_LENGTH : build_id_size);
1372 /* Write the codeview record. */
1373 if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
1376 /* Record the location of the debug directory in the data directory. */
1377 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
1378 = asec->vma - ib + link_order->offset;
1379 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
1380 = sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1385 /* Make .buildid section, and set up coff_tdata->build_id. */
1387 setup_build_id (bfd *ibfd)
1392 if (!validate_build_id_style (emit_build_id))
1394 einfo ("%P: warning: unrecognized --build-id style ignored.\n");
1398 flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
1399 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
1400 s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
1403 struct pe_tdata *t = pe_data (link_info.output_bfd);
1404 t->build_id.after_write_object_contents = &write_build_id;
1405 t->build_id.style = emit_build_id;
1406 t->build_id.sec = s;
1408 /* Section is a fixed size:
1409 One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
1410 pointing at a CV_INFO_PDB70 record containing the build-id, with a
1411 null byte for PdbFileName. */
1412 s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
1413 + sizeof (CV_INFO_PDB70) + 1;
1418 einfo ("%P: warning: Cannot create .buildid section,"
1419 " --build-id ignored.\n");
1424 gld_${EMULATION_NAME}_after_open (void)
1426 after_open_default ();
1429 if (pe_dll_extra_pe_debug)
1432 struct bfd_link_hash_entry *sym;
1434 printf ("%s()\n", __FUNCTION__);
1436 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1437 printf ("-%s\n", sym->root.string);
1438 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1440 for (a = link_info.input_bfds; a; a = a->link.next)
1441 printf ("*%s\n",a->filename);
1445 if (emit_build_id != NULL)
1449 /* Find a COFF input. */
1450 for (abfd = link_info.input_bfds;
1451 abfd != (bfd *) NULL; abfd = abfd->link.next)
1452 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
1455 /* If there are no COFF input files do not try to
1456 add a build-id section. */
1458 || !setup_build_id (abfd))
1460 free ((char *) emit_build_id);
1461 emit_build_id = NULL;
1465 /* Pass the wacky PE command line options into the output bfd.
1466 FIXME: This should be done via a function, rather than by
1467 including an internal BFD header. */
1469 if (coff_data (link_info.output_bfd) == NULL
1470 || coff_data (link_info.output_bfd)->pe == 0)
1471 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1472 link_info.output_bfd);
1474 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1475 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1476 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1477 pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
1479 /* At this point we must decide whether to use long section names
1480 in the output or not. If the user hasn't explicitly specified
1481 on the command line, we leave it to the default for the format
1482 (object files yes, image files no), except if there is debug
1483 information present; GDB relies on the long section names to
1484 find it, so enable it in that case. */
1485 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1487 if (bfd_link_relocatable (&link_info))
1488 pe_use_coff_long_section_names = 1;
1491 /* Iterate over all sections of all input BFDs, checking
1492 for any that begin 'debug_' and are long names. */
1493 LANG_FOR_EACH_INPUT_STATEMENT (is)
1495 int found_debug = 0;
1497 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1500 pe_use_coff_long_section_names = 1;
1507 pe_output_file_set_long_section_names (link_info.output_bfd);
1510 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1511 pe_fixup_stdcalls ();
1513 pe_process_import_defs (link_info.output_bfd, &link_info);
1515 pe_find_data_imports ();
1517 /* As possibly new symbols are added by imports, we rerun
1518 stdcall/fastcall fixup here. */
1519 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1520 pe_fixup_stdcalls ();
1522 #if defined (TARGET_IS_i386pe) \
1523 || defined (TARGET_IS_armpe) \
1524 || defined (TARGET_IS_arm_epoc_pe) \
1525 || defined (TARGET_IS_arm_wince_pe)
1526 if (!bfd_link_relocatable (&link_info))
1527 pe_dll_build_sections (link_info.output_bfd, &link_info);
1529 if (bfd_link_pic (&link_info))
1530 pe_dll_build_sections (link_info.output_bfd, &link_info);
1532 pe_exe_build_sections (link_info.output_bfd, &link_info);
1534 #endif /* DLL_SUPPORT */
1536 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1537 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1539 /* The arm backend needs special fields in the output hash structure.
1540 These will only be created if the output format is an arm format,
1541 hence we do not support linking and changing output formats at the
1542 same time. Use a link followed by objcopy to change output formats. */
1543 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1547 /* Find a BFD that can hold the interworking stubs. */
1548 LANG_FOR_EACH_INPUT_STATEMENT (is)
1550 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1557 /* This next chunk of code tries to detect the case where you have
1558 two import libraries for the same DLL (specifically,
1559 symbolically linking libm.a and libc.a in cygwin to
1560 libcygwin.a). In those cases, it's possible for function
1561 thunks from the second implib to be used but without the
1562 head/tail objects, causing an improper import table. We detect
1563 those cases and rename the "other" import libraries to match
1564 the one the head/tail come from, so that the linker will sort
1565 things nicely and produce a valid import table. */
1567 LANG_FOR_EACH_INPUT_STATEMENT (is)
1569 if (is->the_bfd->my_archive)
1571 int idata2 = 0, reloc_count=0, is_imp = 0;
1574 /* See if this is an import library thunk. */
1575 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1577 if (strcmp (sec->name, ".idata\$2") == 0)
1579 if (CONST_STRNEQ (sec->name, ".idata\$"))
1581 reloc_count += sec->reloc_count;
1584 if (is_imp && !idata2 && reloc_count)
1586 /* It is, look for the reference to head and see if it's
1587 from our own library. */
1588 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1596 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1600 if (!bfd_generic_link_read_symbols (is->the_bfd))
1602 einfo (_("%B%F: could not read symbols: %E\n"),
1606 symbols = bfd_get_outsymbols (is->the_bfd);
1608 relocs = xmalloc ((size_t) relsize);
1609 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1614 einfo ("%X%P: unable to process relocs: %E\n");
1618 for (i = 0; i < nrelocs; i++)
1620 struct bfd_symbol *s;
1621 struct bfd_link_hash_entry * blhe;
1622 char *other_bfd_filename;
1625 s = (relocs[i]->sym_ptr_ptr)[0];
1627 if (s->flags & BSF_LOCAL)
1630 /* Thunk section with reloc to another bfd. */
1631 blhe = bfd_link_hash_lookup (link_info.hash,
1633 FALSE, FALSE, TRUE);
1636 || blhe->type != bfd_link_hash_defined)
1640 = blhe->u.def.section->owner->my_archive
1641 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1642 : bfd_get_filename (blhe->u.def.section->owner);
1644 if (filename_cmp (bfd_get_filename
1645 (is->the_bfd->my_archive),
1646 other_bfd_filename) == 0)
1649 /* Rename this implib to match the other one. */
1650 n = xmalloc (strlen (other_bfd_filename) + 1);
1651 strcpy (n, other_bfd_filename);
1652 is->the_bfd->my_archive->filename = n;
1656 /* Note - we do not free the symbols,
1657 they are now cached in the BFD. */
1667 lang_input_statement_type *is2;
1668 lang_input_statement_type *is3;
1670 /* Careful - this is a shell script. Watch those dollar signs! */
1671 /* Microsoft import libraries have every member named the same,
1672 and not in the right order for us to link them correctly. We
1673 must detect these and rename the members so that they'll link
1674 correctly. There are three types of objects: the head, the
1675 thunks, and the sentinel(s). The head is easy; it's the one
1676 with idata2. We assume that the sentinels won't have relocs,
1677 and the thunks will. It's easier than checking the symbol
1678 table for external references. */
1679 LANG_FOR_EACH_INPUT_STATEMENT (is)
1681 if (is->the_bfd->my_archive)
1684 bfd *arch = is->the_bfd->my_archive;
1686 if (cur_arch != arch)
1692 is3 && is3->the_bfd->my_archive == arch;
1693 is3 = (lang_input_statement_type *) is3->next)
1695 /* A MS dynamic import library can also contain static
1696 members, so look for the first element with a .dll
1697 extension, and use that for the remainder of the
1699 pnt = strrchr (is3->the_bfd->filename, '.');
1700 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0)
1708 /* OK, found one. Now look to see if the remaining
1709 (dynamic import) members use the same name. */
1711 is2 && is2->the_bfd->my_archive == arch;
1712 is2 = (lang_input_statement_type *) is2->next)
1714 /* Skip static members, ie anything with a .obj
1716 pnt = strrchr (is2->the_bfd->filename, '.');
1717 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0)
1720 if (filename_cmp (is3->the_bfd->filename,
1721 is2->the_bfd->filename))
1730 /* This fragment might have come from an .obj file in a Microsoft
1731 import, and not an actual import record. If this is the case,
1732 then leave the filename alone. */
1733 pnt = strrchr (is->the_bfd->filename, '.');
1735 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0))
1737 int idata2 = 0, reloc_count=0;
1739 char *new_name, seq;
1741 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1743 if (strcmp (sec->name, ".idata\$2") == 0)
1745 reloc_count += sec->reloc_count;
1748 if (idata2) /* .idata2 is the TOC */
1750 else if (reloc_count > 0) /* thunks */
1755 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1756 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1757 is->the_bfd->filename = new_name;
1759 new_name = xmalloc (strlen (is->filename) + 3);
1760 sprintf (new_name, "%s.%c", is->filename, seq);
1761 is->filename = new_name;
1768 /* The following chunk of code tries to identify jump stubs in
1769 import libraries which are dead code and eliminates them
1770 from the final link. For each exported symbol <sym>, there
1771 is a object file in the import library with a .text section
1772 and several .idata\$* sections. The .text section contains the
1773 symbol definition for <sym> which is a jump stub of the form
1774 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1775 for __imp_<sym> which is the address of the slot for <sym> in
1776 the import address table. When a symbol is imported explicitly
1777 using __declspec(dllimport) declaration, the compiler generates
1778 a reference to __imp_<sym> which directly resolves to the
1779 symbol in .idata\$5, in which case the jump stub code is not
1780 needed. The following code tries to identify jump stub sections
1781 in import libraries which are not referred to by anyone and
1782 marks them for exclusion from the final link. */
1783 LANG_FOR_EACH_INPUT_STATEMENT (is)
1785 if (is->the_bfd->my_archive)
1788 asection *sec, *stub_sec = NULL;
1790 /* See if this is an import library thunk. */
1791 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1793 if (strncmp (sec->name, ".idata\$", 7) == 0)
1795 /* The section containing the jmp stub has code
1797 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1801 if (is_imp && stub_sec)
1804 long nsyms, src_count;
1805 struct bfd_link_hash_entry * blhe;
1807 if (!bfd_generic_link_read_symbols (is->the_bfd))
1809 einfo (_("%B%F: could not read symbols: %E\n"),
1813 symbols = bfd_get_outsymbols (is->the_bfd);
1814 nsyms = bfd_get_symcount (is->the_bfd);
1816 for (src_count = 0; src_count < nsyms; src_count++)
1818 if (symbols[src_count]->section->id == stub_sec->id)
1820 /* This symbol belongs to the section containing
1822 blhe = bfd_link_hash_lookup (link_info.hash,
1823 symbols[src_count]->name,
1824 FALSE, FALSE, TRUE);
1825 /* If the symbol in the stub section has no other
1826 undefined references, exclude the stub section
1827 from the final link. */
1829 && blhe->type == bfd_link_hash_defined
1830 && blhe->u.undef.next == NULL
1831 && blhe != link_info.hash->undefs_tail)
1832 stub_sec->flags |= SEC_EXCLUDE;
1842 gld_${EMULATION_NAME}_before_allocation (void)
1844 #ifdef TARGET_IS_ppcpe
1845 /* Here we rummage through the found bfds to collect toc information. */
1847 LANG_FOR_EACH_INPUT_STATEMENT (is)
1849 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1851 /* xgettext:c-format */
1852 einfo (_("Errors encountered processing file %s\n"), is->filename);
1857 /* We have seen it all. Allocate it, and carry on. */
1858 ppc_allocate_toc_section (&link_info);
1859 #endif /* TARGET_IS_ppcpe */
1861 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1862 /* FIXME: we should be able to set the size of the interworking stub
1865 Here we rummage through the found bfds to collect glue
1866 information. FIXME: should this be based on a command line
1867 option? krk@cygnus.com. */
1869 LANG_FOR_EACH_INPUT_STATEMENT (is)
1871 if (! bfd_arm_process_before_allocation
1872 (is->the_bfd, & link_info, support_old_code))
1874 /* xgettext:c-format */
1875 einfo (_("Errors encountered processing file %s for interworking\n"),
1881 /* We have seen it all. Allocate it, and carry on. */
1882 bfd_arm_allocate_interworking_sections (& link_info);
1883 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1885 before_allocation_default ();
1889 /* This is called when an input file isn't recognized as a BFD. We
1890 check here for .DEF files and pull them in automatically. */
1893 saw_option (char *option)
1897 for (i = 0; init[i].ptr; i++)
1898 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1899 return init[i].inited;
1902 #endif /* DLL_SUPPORT */
1905 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1908 const char *ext = entry->filename + strlen (entry->filename) - 4;
1910 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
1912 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1916 int i, buflen=0, len;
1919 for (i = 0; i < pe_def_file->num_exports; i++)
1921 len = strlen (pe_def_file->exports[i].internal_name);
1922 if (buflen < len + 2)
1926 buf = xmalloc (buflen);
1928 for (i = 0; i < pe_def_file->num_exports; i++)
1930 struct bfd_link_hash_entry *h;
1932 sprintf (buf, "%s%s", U (""),
1933 pe_def_file->exports[i].internal_name);
1935 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1936 if (h == (struct bfd_link_hash_entry *) NULL)
1937 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1938 if (h->type == bfd_link_hash_new)
1940 h->type = bfd_link_hash_undefined;
1941 h->u.undef.abfd = NULL;
1942 bfd_link_add_undef (link_info.hash, h);
1947 /* def_file_print (stdout, pe_def_file); */
1948 if (pe_def_file->is_dll == 1)
1949 link_info.type = type_dll;
1951 if (pe_def_file->base_address != (bfd_vma)(-1))
1954 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1955 = init[IMAGEBASEOFF].value
1956 = pe_def_file->base_address;
1957 init[IMAGEBASEOFF].inited = 1;
1958 if (image_base_statement)
1959 image_base_statement->exp
1960 = exp_assign ("__image_base__", exp_intop (pe.ImageBase),
1964 if (pe_def_file->stack_reserve != -1
1965 && ! saw_option ("__size_of_stack_reserve__"))
1967 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1968 if (pe_def_file->stack_commit != -1)
1969 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1971 if (pe_def_file->heap_reserve != -1
1972 && ! saw_option ("__size_of_heap_reserve__"))
1974 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1975 if (pe_def_file->heap_commit != -1)
1976 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1986 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1989 #ifdef TARGET_IS_i386pe
1990 pe_dll_id_target ("pei-i386");
1992 #ifdef TARGET_IS_shpe
1993 pe_dll_id_target ("pei-shl");
1995 #ifdef TARGET_IS_armpe
1996 pe_dll_id_target ("pei-arm-little");
1998 #ifdef TARGET_IS_arm_epoc_pe
1999 pe_dll_id_target ("epoc-pei-arm-little");
2001 #ifdef TARGET_IS_arm_wince_pe
2002 pe_dll_id_target ("pei-arm-wince-little");
2004 if (pe_bfd_is_dll (entry->the_bfd))
2005 return pe_implied_import_dll (entry->filename);
2011 gld_${EMULATION_NAME}_finish (void)
2013 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
2014 struct bfd_link_hash_entry * h;
2016 if (thumb_entry_symbol != NULL)
2018 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
2019 FALSE, FALSE, TRUE);
2021 if (h != (struct bfd_link_hash_entry *) NULL
2022 && (h->type == bfd_link_hash_defined
2023 || h->type == bfd_link_hash_defweak)
2024 && h->u.def.section->output_section != NULL)
2026 static char buffer[32];
2029 /* Special procesing is required for a Thumb entry symbol. The
2030 bottom bit of its address must be set. */
2031 val = (h->u.def.value
2032 + bfd_get_section_vma (link_info.output_bfd,
2033 h->u.def.section->output_section)
2034 + h->u.def.section->output_offset);
2038 /* Now convert this value into a string and store it in entry_symbol
2039 where the lang_finish() function will pick it up. */
2043 sprintf_vma (buffer + 2, val);
2045 if (entry_symbol.name != NULL && entry_from_cmdline)
2046 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
2047 thumb_entry_symbol, entry_symbol.name);
2048 entry_symbol.name = buffer;
2051 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
2053 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
2058 if (bfd_link_pic (&link_info)
2059 #if !defined(TARGET_IS_shpe)
2060 || (!bfd_link_relocatable (&link_info)
2061 && pe_def_file->num_exports != 0)
2065 pe_dll_fill_sections (link_info.output_bfd, &link_info);
2066 if (command_line.out_implib_filename)
2067 pe_dll_generate_implib (pe_def_file, command_line.out_implib_filename,
2070 #if defined(TARGET_IS_shpe)
2071 /* ARM doesn't need relocs. */
2074 pe_exe_fill_sections (link_info.output_bfd, &link_info);
2078 if (pe_out_def_filename)
2079 pe_dll_generate_def_file (pe_out_def_filename);
2080 #endif /* DLL_SUPPORT */
2082 /* I don't know where .idata gets set as code, but it shouldn't be. */
2084 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
2088 asec->flags &= ~SEC_CODE;
2089 asec->flags |= SEC_DATA;
2095 /* Place an orphan section.
2097 We use this to put sections in a reasonable place in the file, and
2098 to ensure that they are aligned as required.
2100 We handle grouped sections here as well. A section named .foo\$nn
2101 goes into the output section .foo. All grouped sections are sorted
2104 Grouped sections for the default sections are handled by the
2105 default linker script using wildcards, and are sorted by
2108 static lang_output_section_statement_type *
2109 gld_${EMULATION_NAME}_place_orphan (asection *s,
2110 const char *secname,
2113 const char *orig_secname = secname;
2114 char *dollar = NULL;
2115 lang_output_section_statement_type *os;
2116 lang_statement_list_type add_child;
2117 lang_output_section_statement_type *match_by_name = NULL;
2118 lang_statement_union_type **pl;
2120 /* Look through the script to see where to place this section. */
2121 if (!bfd_link_relocatable (&link_info)
2122 && (dollar = strchr (secname, '\$')) != NULL)
2124 size_t len = dollar - secname;
2125 char *newname = xmalloc (len + 1);
2126 memcpy (newname, secname, len);
2127 newname[len] = '\0';
2131 lang_list_init (&add_child);
2134 if (constraint == 0)
2135 for (os = lang_output_section_find (secname);
2137 os = next_matching_output_section_statement (os, 0))
2139 /* If we don't match an existing output section, tell
2140 lang_insert_orphan to create a new output section. */
2141 constraint = SPECIAL;
2143 if (os->bfd_section != NULL
2144 && (os->bfd_section->flags == 0
2145 || ((s->flags ^ os->bfd_section->flags)
2146 & (SEC_LOAD | SEC_ALLOC)) == 0))
2148 /* We already have an output section statement with this
2149 name, and its bfd section has compatible flags.
2150 If the section already exists but does not have any flags set,
2151 then it has been created by the linker, probably as a result of
2152 a --section-start command line switch. */
2153 lang_add_section (&add_child, s, NULL, os);
2157 /* Save unused output sections in case we can match them
2158 against orphans later. */
2159 if (os->bfd_section == NULL)
2163 /* If we didn't match an active output section, see if we matched an
2164 unused one and use that. */
2165 if (os == NULL && match_by_name)
2167 lang_add_section (&match_by_name->children, s, NULL, match_by_name);
2168 return match_by_name;
2173 static struct orphan_save hold[] =
2176 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
2179 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
2182 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
2185 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
2191 enum orphan_save_index
2199 static int orphan_init_done = 0;
2200 struct orphan_save *place;
2201 lang_output_section_statement_type *after;
2202 etree_type *address;
2206 if (!orphan_init_done)
2208 struct orphan_save *ho;
2209 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
2210 if (ho->name != NULL)
2212 ho->os = lang_output_section_find (ho->name);
2213 if (ho->os != NULL && ho->os->flags == 0)
2214 ho->os->flags = ho->flags;
2216 orphan_init_done = 1;
2220 if (!bfd_link_relocatable (&link_info))
2223 while ((nexts = bfd_get_next_section_by_name (nexts->owner,
2225 if (nexts->output_section == NULL
2226 && (nexts->flags & SEC_EXCLUDE) == 0
2227 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
2228 && (nexts->owner->flags & DYNAMIC) == 0
2229 && nexts->owner->usrdata != NULL
2230 && !(((lang_input_statement_type *) nexts->owner->usrdata)
2232 flags = (((flags ^ SEC_READONLY)
2233 | (nexts->flags ^ SEC_READONLY))
2237 /* Try to put the new output section in a reasonable place based
2238 on the section name and section flags. */
2241 if ((flags & SEC_ALLOC) == 0)
2243 else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2244 place = &hold[orphan_bss];
2245 else if ((flags & SEC_READONLY) == 0)
2246 place = &hold[orphan_data];
2247 else if ((flags & SEC_CODE) == 0)
2249 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
2250 : &hold[orphan_rodata]);
2253 place = &hold[orphan_text];
2258 if (place->os == NULL)
2259 place->os = lang_output_section_find (place->name);
2262 after = lang_output_section_find_by_flags (s, flags, &place->os,
2265 /* *ABS* is always the first output section statement. */
2266 after = (&lang_output_section_statement.head
2267 ->output_section_statement);
2270 /* All sections in an executable must be aligned to a page boundary.
2271 In a relocatable link, just preserve the incoming alignment; the
2272 address is discarded by lang_insert_orphan in that case, anyway. */
2273 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2274 os = lang_insert_orphan (s, secname, constraint, after, place, address,
2276 if (bfd_link_relocatable (&link_info))
2278 os->section_alignment = s->alignment_power;
2279 os->bfd_section->alignment_power = s->alignment_power;
2283 /* If the section name has a '\$', sort it with the other '\$'
2285 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2287 lang_input_section_type *ls;
2290 if ((*pl)->header.type != lang_input_section_enum)
2293 ls = &(*pl)->input_section;
2295 lname = bfd_get_section_name (ls->section->owner, ls->section);
2296 if (strchr (lname, '\$') != NULL
2297 && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2301 if (add_child.head != NULL)
2303 *add_child.tail = *pl;
2304 *pl = add_child.head;
2311 gld_${EMULATION_NAME}_open_dynamic_archive
2312 (const char *arch ATTRIBUTE_UNUSED,
2313 search_dirs_type *search,
2314 lang_input_statement_type *entry)
2318 const char * format;
2319 bfd_boolean use_prefix;
2323 /* Preferred explicit import library for dll's. */
2324 { "lib%s.dll.a", FALSE },
2325 /* Alternate explicit import library for dll's. */
2326 { "%s.dll.a", FALSE },
2327 /* "libfoo.a" could be either an import lib or a static lib.
2328 For backwards compatibility, libfoo.a needs to precede
2329 libfoo.dll and foo.dll in the search. */
2330 { "lib%s.a", FALSE },
2331 /* The 'native' spelling of an import lib name is "foo.lib". */
2332 { "%s.lib", FALSE },
2334 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
2335 { "%s%s.dll", TRUE },
2337 /* Try "libfoo.dll" (default preferred dll name). */
2338 { "lib%s.dll", FALSE },
2339 /* Finally try 'native' dll name "foo.dll". */
2340 { "%s.dll", FALSE },
2341 /* Note: If adding more formats to this table, make sure to check to
2342 see if their length is longer than libname_fmt[0].format, and if
2343 so, update the call to xmalloc() below. */
2346 static unsigned int format_max_len = 0;
2347 const char * filename;
2353 if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
2356 filename = entry->filename;
2358 if (format_max_len == 0)
2359 /* We need to allow space in the memory that we are going to allocate
2360 for the characters in the format string. Since the format array is
2361 static we only need to calculate this information once. In theory
2362 this value could also be computed statically, but this introduces
2363 the possibility for a discrepancy and hence a possible memory
2364 corruption. The lengths we compute here will be too long because
2365 they will include any formating characters (%s) in the strings, but
2366 this will not matter. */
2367 for (i = 0; libname_fmt[i].format; i++)
2368 if (format_max_len < strlen (libname_fmt[i].format))
2369 format_max_len = strlen (libname_fmt[i].format);
2371 full_string = xmalloc (strlen (search->name)
2375 + (pe_dll_search_prefix
2376 ? strlen (pe_dll_search_prefix) : 0)
2378 /* Allow for the terminating NUL and for the path
2379 separator character that is inserted between
2380 search->name and the start of the format string. */
2383 sprintf (full_string, "%s/", search->name);
2384 base_string = full_string + strlen (full_string);
2386 for (i = 0; libname_fmt[i].format; i++)
2389 if (libname_fmt[i].use_prefix)
2391 if (!pe_dll_search_prefix)
2393 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
2397 sprintf (base_string, libname_fmt[i].format, filename);
2399 if (ldfile_try_open_bfd (full_string, entry))
2403 if (!libname_fmt[i].format)
2409 entry->filename = full_string;
2415 gld_${EMULATION_NAME}_find_potential_libraries
2416 (char *name, lang_input_statement_type *entry)
2418 return ldfile_open_file_search (name, entry, "", ".lib");
2422 gld_${EMULATION_NAME}_get_script (int *isfile)
2424 # Scripts compiled in.
2425 # sed commands to quote an ld script as a C string.
2426 sc="-f stringify.sed"
2432 if (bfd_link_relocatable (&link_info) && config.build_constructors)
2435 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2436 echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
2437 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2438 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2439 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2440 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2441 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2442 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2443 echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c
2444 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
2446 echo ' ; else return' >> e${EMULATION_NAME}.c
2447 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2448 echo '; }' >> e${EMULATION_NAME}.c
2453 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2455 gld_${EMULATION_NAME}_before_parse,
2458 gld_${EMULATION_NAME}_after_parse,
2459 gld_${EMULATION_NAME}_after_open,
2460 after_allocation_default,
2461 set_output_arch_default,
2462 ldemul_default_target,
2463 gld_${EMULATION_NAME}_before_allocation,
2464 gld_${EMULATION_NAME}_get_script,
2465 "${EMULATION_NAME}",
2467 gld_${EMULATION_NAME}_finish,
2468 NULL, /* Create output section statements. */
2469 gld_${EMULATION_NAME}_open_dynamic_archive,
2470 gld_${EMULATION_NAME}_place_orphan,
2471 gld_${EMULATION_NAME}_set_symbols,
2472 NULL, /* parse_args */
2473 gld${EMULATION_NAME}_add_options,
2474 gld${EMULATION_NAME}_handle_option,
2475 gld_${EMULATION_NAME}_unrecognized_file,
2476 gld_${EMULATION_NAME}_list_options,
2477 gld_${EMULATION_NAME}_recognized_file,
2478 gld_${EMULATION_NAME}_find_potential_libraries,
2479 NULL, /* new_vers_pattern. */
2480 NULL /* extra_map_file_text. */