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 = ${SUBSYSTEM};
130 static flagword real_flags = 0;
131 static int support_old_code = 0;
132 static char * thumb_entry_symbol = NULL;
133 static lang_assignment_statement_type *image_base_statement = 0;
134 static unsigned short pe_dll_characteristics = 0;
135 static bfd_boolean insert_timestamp = TRUE;
136 static const char *emit_build_id;
139 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
140 static char *pe_out_def_filename = NULL;
141 static char *pe_implib_filename = NULL;
142 static int pe_enable_auto_image_base = 0;
143 static unsigned long pe_auto_image_base = 0x61500000;
144 static char *pe_dll_search_prefix = NULL;
147 extern const char *output_filename;
149 static int is_underscoring (void)
152 if (pe_leading_underscore != -1)
153 return pe_leading_underscore;
154 if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
155 bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
159 pe_leading_underscore = (u != 0 ? 1 : 0);
160 return pe_leading_underscore;
164 gld_${EMULATION_NAME}_before_parse (void)
167 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
168 output_filename = "${EXECUTABLE_NAME:-a.exe}";
170 input_flags.dynamic = TRUE;
171 config.has_shared = 1;
174 # Cygwin no longer wants these noisy warnings. Other PE
175 # targets might like to consider adding themselves here.
176 # See also the mail thread starting here for the reason why
177 # merge_rdata defaults to 0 for cygwin:
178 # http://cygwin.com/ml/cygwin-apps/2013-04/msg00187.html
181 default_auto_import=1
182 default_merge_rdata=0
184 i[3-7]86-*-mingw* | x86_64-*-mingw*)
185 default_auto_import=1
186 default_merge_rdata=0
189 default_auto_import=-1
190 default_merge_rdata=1
195 link_info.pei386_auto_import = ${default_auto_import};
196 /* Use by default version. */
197 link_info.pei386_runtime_pseudo_reloc = DEFAULT_PSEUDO_RELOC_VERSION;
201 /* Indicates if RDATA shall be merged into DATA when pseudo-relocation
202 version 2 is used and auto-import is enabled. */
203 #define MERGE_RDATA_V2 ${default_merge_rdata}
205 /* PE format extra command line options. */
207 /* Used for setting flags in the PE header. */
208 #define OPTION_BASE_FILE (300 + 1)
209 #define OPTION_DLL (OPTION_BASE_FILE + 1)
210 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
211 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
212 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
213 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
214 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
215 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
216 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
217 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
218 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
219 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
220 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
221 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
222 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
223 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
224 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
225 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
226 #define OPTION_EXCLUDE_ALL_SYMBOLS (OPTION_EXCLUDE_SYMBOLS + 1)
227 #define OPTION_KILL_ATS (OPTION_EXCLUDE_ALL_SYMBOLS + 1)
228 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
229 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
230 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
231 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
232 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
233 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
234 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
235 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
236 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
237 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
238 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
239 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
240 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
241 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
242 #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
243 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
244 (OPTION_EXCLUDE_LIBS + 1)
245 #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
246 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
247 #define OPTION_LARGE_ADDRESS_AWARE (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
248 #define OPTION_DISABLE_LARGE_ADDRESS_AWARE \
249 (OPTION_LARGE_ADDRESS_AWARE + 1)
250 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
251 (OPTION_DISABLE_LARGE_ADDRESS_AWARE + 1)
252 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
253 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
254 #define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
255 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
256 #define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
257 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
258 #define OPTION_NO_LEADING_UNDERSCORE (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
259 #define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 1)
260 #define OPTION_ENABLE_LONG_SECTION_NAMES \
261 (OPTION_LEADING_UNDERSCORE + 1)
262 #define OPTION_DISABLE_LONG_SECTION_NAMES \
263 (OPTION_ENABLE_LONG_SECTION_NAMES + 1)
264 /* DLLCharacteristics flags. */
265 #define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1)
266 #define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1)
267 #define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1)
268 #define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1)
269 #define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1)
270 #define OPTION_NO_BIND (OPTION_NO_SEH + 1)
271 #define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1)
272 #define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1)
274 #define OPTION_INSERT_TIMESTAMP (OPTION_TERMINAL_SERVER_AWARE + 1)
275 #define OPTION_NO_INSERT_TIMESTAMP (OPTION_INSERT_TIMESTAMP + 1)
276 #define OPTION_BUILD_ID (OPTION_NO_INSERT_TIMESTAMP + 1)
279 gld${EMULATION_NAME}_add_options
280 (int ns ATTRIBUTE_UNUSED,
281 char **shortopts ATTRIBUTE_UNUSED,
283 struct option **longopts,
284 int nrl ATTRIBUTE_UNUSED,
285 struct option **really_longopts ATTRIBUTE_UNUSED)
287 static const struct option xtra_long[] =
290 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
291 {"dll", no_argument, NULL, OPTION_DLL},
292 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
293 {"heap", required_argument, NULL, OPTION_HEAP},
294 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
295 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
296 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
297 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
298 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
299 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
300 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
301 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
302 {"stack", required_argument, NULL, OPTION_STACK},
303 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
304 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
305 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
306 {"use-nul-prefixed-import-tables", no_argument, NULL,
307 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
308 {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
309 {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
310 {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
311 {"no-insert-timestamp", no_argument, NULL, OPTION_NO_INSERT_TIMESTAMP},
313 /* getopt allows abbreviations, so we do this to stop it
314 from treating -o as an abbreviation for this option. */
315 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
316 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
317 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
318 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
319 {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
320 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
321 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
322 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
323 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
324 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
325 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
326 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
327 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
328 /* getopt() allows abbreviations, so we do this to stop it from
329 treating -c as an abbreviation for these --compat-implib. */
330 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
331 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
332 {"enable-auto-image-base", optional_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
333 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
334 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
335 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
336 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
337 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
338 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
339 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
340 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
341 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
342 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
344 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
345 {"disable-large-address-aware", no_argument, NULL, OPTION_DISABLE_LARGE_ADDRESS_AWARE},
346 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
347 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
348 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
349 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
350 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
351 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
352 {"no-seh", no_argument, NULL, OPTION_NO_SEH},
353 {"no-bind", no_argument, NULL, OPTION_NO_BIND},
354 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
355 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
356 {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
357 {NULL, no_argument, NULL, 0}
361 = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
362 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
365 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
366 parameters which may be input from the command line. */
375 /* FALSE for an assembly level symbol and TRUE for a C visible symbol.
376 C visible symbols can be prefixed by underscore dependent to target's
378 bfd_boolean is_c_symbol;
381 /* Get symbol name dependent to kind and C visible state of
383 #define GET_INIT_SYMBOL_NAME(IDX) \
384 (init[(IDX)].symbol \
385 + ((init[(IDX)].is_c_symbol == FALSE || (is_underscoring () != 0)) ? 0 : 1))
387 /* Decorates the C visible symbol by underscore, if target requires. */
389 ((is_underscoring () == 0) ? CSTR : "_" CSTR)
391 /* Get size of constant string for a possible underscore prefixed
393 #define U_SIZE(CSTR) \
394 (sizeof (CSTR) + (is_underscoring () == 0 ? 0 : 1))
396 #define D(field,symbol,def,usc) {&pe.field, sizeof (pe.field), def, symbol, 0, usc}
398 static definfo init[] =
400 /* imagebase must be first */
401 #define IMAGEBASEOFF 0
402 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE),
404 {&dll, sizeof(dll), 0, "__dll__", 0, FALSE},
405 #define MSIMAGEBASEOFF 2
406 D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE),
407 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE),
408 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE),
409 D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE),
410 D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE),
411 D(MajorImageVersion,"__major_image_version__", 1, FALSE),
412 D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
413 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
414 D(MajorSubsystemVersion,"__major_subsystem_version__", 3, FALSE),
416 D(MajorSubsystemVersion,"__major_subsystem_version__", 4, FALSE),
418 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0, FALSE),
419 D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE),
420 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE),
421 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE),
422 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE),
423 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE),
424 D(LoaderFlags,"__loader_flags__", 0x0, FALSE),
425 D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE),
426 { NULL, 0, 0, NULL, 0 , FALSE}
431 gld_${EMULATION_NAME}_list_options (FILE *file)
433 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
434 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
435 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
436 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
437 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
438 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
439 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
440 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
441 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
442 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
443 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
444 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
445 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
446 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
447 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
448 fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n"));
449 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
450 fprintf (file, _(" --[no-]insert-timestamp Use a real timestamp rather than zero (default).\n"));
451 fprintf (file, _(" This makes binaries non-deterministic\n"));
453 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
454 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
455 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
456 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
457 fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n"));
458 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
459 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
460 fprintf (file, _(" Exclude objects, archive members from auto\n"));
461 fprintf (file, _(" export, place into import library instead.\n"));
462 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
463 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
464 fprintf (file, _(" --out-implib <file> Generate import library\n"));
465 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
466 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports\n"));
467 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
468 create __imp_<SYMBOL> as well.\n"));
469 fprintf (file, _(" --enable-auto-image-base[=<address>] Automatically choose image base for DLLs\n\
470 (optionally starting with address) unless\n\
471 specifically set with --image-base\n"));
472 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
473 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
474 an importlib, use <string><basename>.dll\n\
475 in preference to lib<basename>.dll \n"));
476 fprintf (file, _(" --enable-auto-import Do sophisticated linking of _sym to\n\
477 __imp_sym for DATA references\n"));
478 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
479 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
480 adding pseudo-relocations resolved at\n\
482 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
483 auto-imported DATA.\n"));
484 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
485 or linking to DLLs (esp. auto-import)\n"));
487 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
488 greater than 2 gigabytes\n"));
489 fprintf (file, _(" --disable-large-address-aware Executable does not support virtual\n\
490 addresses greater than 2 gigabytes\n"));
491 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
492 executable image files\n"));
493 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
494 in object files\n"));
495 fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\
496 address space layout randomization (ASLR)\n"));
497 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
498 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
499 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
500 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
501 be called in this image\n"));
502 fprintf (file, _(" --no-bind Do not bind this image\n"));
503 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
504 fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
505 fprintf (file, _(" --build-id[=STYLE] Generate build ID\n"));
510 set_pe_name (char *name, long val)
515 /* Find the name and set it. */
516 for (i = 0; init[i].ptr; i++)
518 if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
522 if (strcmp (name,"__image_base__") == 0)
523 set_pe_name (U ("__ImageBase"), val);
531 set_entry_point (void)
534 const char *initial_symbol_char;
544 { 1, "NtProcessStartup" },
545 { 2, "WinMainCRTStartup" },
546 { 3, "mainCRTStartup" },
547 { 7, "__PosixProcessStartup"},
548 { 9, "WinMainCRTStartup" },
549 {14, "mainCRTStartup" },
553 /* Entry point name for arbitrary subsystem numbers. */
554 static const char default_entry[] = "mainCRTStartup";
556 if (bfd_link_pic (&link_info) || dll)
558 #if defined (TARGET_IS_i386pe)
559 entry = "DllMainCRTStartup@12";
561 entry = "DllMainCRTStartup";
566 for (i = 0; v[i].entry; i++)
567 if (v[i].value == pe_subsystem)
570 /* If no match, use the default. */
571 if (v[i].entry != NULL)
574 entry = default_entry;
577 initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
579 if (*initial_symbol_char != '\0')
583 /* lang_default_entry expects its argument to be permanently
584 allocated, so we don't free this string. */
585 alc_entry = xmalloc (strlen (initial_symbol_char)
588 strcpy (alc_entry, initial_symbol_char);
589 strcat (alc_entry, entry);
593 lang_default_entry (entry);
597 set_pe_subsystem (void)
603 unsigned long temp_subsystem;
620 /* Check for the presence of a version number. */
621 sver = strchr (optarg, ':');
623 len = strlen (optarg);
627 set_pe_name ("__major_subsystem_version__",
628 strtoul (sver + 1, &end, 0));
630 set_pe_name ("__minor_subsystem_version__",
631 strtoul (end + 1, &end, 0));
633 einfo (_("%P: warning: bad version number in -subsystem option\n"));
636 /* Check for numeric subsystem. */
637 temp_subsystem = strtoul (optarg, & end, 0);
638 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
640 /* Search list for a numeric match to use its entry point. */
641 for (i = 0; v[i].name; i++)
642 if (v[i].value == (int) temp_subsystem)
645 /* Use this subsystem. */
646 pe_subsystem = (int) temp_subsystem;
650 /* Search for subsystem by name. */
651 for (i = 0; v[i].name; i++)
652 if (strncmp (optarg, v[i].name, len) == 0
653 && v[i].name[len] == '\0')
656 if (v[i].name == NULL)
658 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
662 pe_subsystem = v[i].value;
665 set_pe_name ("__subsystem__", pe_subsystem);
672 set_pe_value (char *name)
676 set_pe_name (name, strtoul (optarg, &end, 0));
679 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
686 set_pe_stack_heap (char *resname, char *comname)
688 set_pe_value (resname);
693 set_pe_value (comname);
696 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
699 #define DEFAULT_BUILD_ID_STYLE "md5"
702 gld${EMULATION_NAME}_handle_option (int optc)
709 case OPTION_BASE_FILE:
710 link_info.base_file = fopen (optarg, FOPEN_WB);
711 if (link_info.base_file == NULL)
712 einfo (_("%F%P: cannot open base file %s\n"), optarg);
717 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
720 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
722 case OPTION_SUBSYSTEM:
725 case OPTION_MAJOR_OS_VERSION:
726 set_pe_value ("__major_os_version__");
728 case OPTION_MINOR_OS_VERSION:
729 set_pe_value ("__minor_os_version__");
731 case OPTION_MAJOR_SUBSYSTEM_VERSION:
732 set_pe_value ("__major_subsystem_version__");
734 case OPTION_MINOR_SUBSYSTEM_VERSION:
735 set_pe_value ("__minor_subsystem_version__");
737 case OPTION_MAJOR_IMAGE_VERSION:
738 set_pe_value ("__major_image_version__");
740 case OPTION_MINOR_IMAGE_VERSION:
741 set_pe_value ("__minor_image_version__");
743 case OPTION_FILE_ALIGNMENT:
744 set_pe_value ("__file_alignment__");
746 case OPTION_SECTION_ALIGNMENT:
747 set_pe_value ("__section_alignment__");
750 set_pe_name ("__dll__", 1);
752 case OPTION_IMAGE_BASE:
753 set_pe_value ("__image_base__");
755 case OPTION_SUPPORT_OLD_CODE:
756 support_old_code = 1;
758 case OPTION_THUMB_ENTRY:
759 thumb_entry_symbol = optarg;
761 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
762 pe_use_nul_prefixed_import_tables = TRUE;
764 case OPTION_NO_LEADING_UNDERSCORE:
765 pe_leading_underscore = 0;
767 case OPTION_LEADING_UNDERSCORE:
768 pe_leading_underscore = 1;
770 case OPTION_INSERT_TIMESTAMP:
771 insert_timestamp = TRUE;
773 case OPTION_NO_INSERT_TIMESTAMP:
774 insert_timestamp = FALSE;
778 pe_out_def_filename = xstrdup (optarg);
780 case OPTION_EXPORT_ALL:
781 pe_dll_export_everything = 1;
783 case OPTION_EXCLUDE_SYMBOLS:
784 pe_dll_add_excludes (optarg, EXCLUDESYMS);
786 case OPTION_EXCLUDE_ALL_SYMBOLS:
787 pe_dll_exclude_all_symbols = 1;
789 case OPTION_EXCLUDE_LIBS:
790 pe_dll_add_excludes (optarg, EXCLUDELIBS);
792 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
793 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
795 case OPTION_KILL_ATS:
798 case OPTION_STDCALL_ALIASES:
799 pe_dll_stdcall_aliases = 1;
801 case OPTION_ENABLE_STDCALL_FIXUP:
802 pe_enable_stdcall_fixup = 1;
804 case OPTION_DISABLE_STDCALL_FIXUP:
805 pe_enable_stdcall_fixup = 0;
807 case OPTION_IMPLIB_FILENAME:
808 pe_implib_filename = xstrdup (optarg);
810 case OPTION_WARN_DUPLICATE_EXPORTS:
811 pe_dll_warn_dup_exports = 1;
813 case OPTION_IMP_COMPAT:
814 pe_dll_compat_implib = 1;
816 case OPTION_ENABLE_AUTO_IMAGE_BASE:
817 pe_enable_auto_image_base = 1;
818 if (optarg && *optarg)
821 pe_auto_image_base = strtoul (optarg, &end, 0);
822 /* XXX should check that we actually parsed something */
825 case OPTION_DISABLE_AUTO_IMAGE_BASE:
826 pe_enable_auto_image_base = 0;
828 case OPTION_DLL_SEARCH_PREFIX:
829 pe_dll_search_prefix = xstrdup (optarg);
831 case OPTION_NO_DEFAULT_EXCLUDES:
832 pe_dll_do_default_excludes = 0;
834 case OPTION_DLL_ENABLE_AUTO_IMPORT:
835 link_info.pei386_auto_import = 1;
837 case OPTION_DLL_DISABLE_AUTO_IMPORT:
838 link_info.pei386_auto_import = 0;
840 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
841 link_info.pei386_runtime_pseudo_reloc =
842 DEFAULT_PSEUDO_RELOC_VERSION;
844 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
845 link_info.pei386_runtime_pseudo_reloc = 1;
847 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
848 link_info.pei386_runtime_pseudo_reloc = 2;
850 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
851 link_info.pei386_runtime_pseudo_reloc = 0;
853 case OPTION_ENABLE_EXTRA_PE_DEBUG:
854 pe_dll_extra_pe_debug = 1;
857 case OPTION_LARGE_ADDRESS_AWARE:
858 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
860 case OPTION_DISABLE_LARGE_ADDRESS_AWARE:
861 real_flags &= ~ IMAGE_FILE_LARGE_ADDRESS_AWARE;
863 case OPTION_ENABLE_LONG_SECTION_NAMES:
864 pe_use_coff_long_section_names = 1;
866 case OPTION_DISABLE_LONG_SECTION_NAMES:
867 pe_use_coff_long_section_names = 0;
869 /* Get DLLCharacteristics bits */
870 case OPTION_DYNAMIC_BASE:
871 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
873 case OPTION_FORCE_INTEGRITY:
874 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
876 case OPTION_NX_COMPAT:
877 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
879 case OPTION_NO_ISOLATION:
880 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
883 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
886 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
888 case OPTION_WDM_DRIVER:
889 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
891 case OPTION_TERMINAL_SERVER_AWARE:
892 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
894 case OPTION_BUILD_ID:
895 if (emit_build_id != NULL)
897 free ((char *) emit_build_id);
898 emit_build_id = NULL;
901 optarg = DEFAULT_BUILD_ID_STYLE;
902 if (strcmp (optarg, "none"))
903 emit_build_id = xstrdup (optarg);
907 /* Set DLLCharacteristics bits */
908 set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
916 strhash (const char *str)
918 const unsigned char *s;
925 s = (const unsigned char *) str;
926 while ((c = *s++) != '\0')
928 hash += c + (c << 17);
932 hash += len + (len << 17);
938 /* Use the output file to create a image base for relocatable DLLs. */
941 compute_dll_image_base (const char *ofile)
943 unsigned long hash = strhash (ofile);
944 return pe_auto_image_base + ((hash << 16) & 0x0FFC0000);
948 /* Assign values to the special symbols before the linker script is
952 gld_${EMULATION_NAME}_set_symbols (void)
954 /* Run through and invent symbols for all the
955 names and insert the defaults. */
960 if (!init[IMAGEBASEOFF].inited)
962 if (bfd_link_relocatable (&link_info))
963 init[IMAGEBASEOFF].value = 0;
964 else if (init[DLLOFF].value || bfd_link_dll (&link_info))
967 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base
968 ? compute_dll_image_base (output_filename)
969 : NT_DLL_IMAGE_BASE);
971 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
975 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
976 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
979 /* Don't do any symbol assignments if this is a relocatable link. */
980 if (bfd_link_relocatable (&link_info))
983 /* Glue the assignments into the abs section. */
984 push_stat_ptr (&abs_output_section->children);
986 for (j = 0; init[j].ptr; j++)
988 long val = init[j].value;
989 lang_assignment_statement_type *rv;
991 rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j),
992 exp_intop (val), FALSE));
993 if (init[j].size == sizeof (short))
994 *(short *) init[j].ptr = val;
995 else if (init[j].size == sizeof (int))
996 *(int *) init[j].ptr = val;
997 else if (init[j].size == sizeof (long))
998 *(long *) init[j].ptr = val;
999 /* This might be a long long or other special type. */
1000 else if (init[j].size == sizeof (bfd_vma))
1001 *(bfd_vma *) init[j].ptr = val;
1003 if (j == IMAGEBASEOFF)
1004 image_base_statement = rv;
1006 /* Restore the pointer. */
1009 if (pe.FileAlignment > pe.SectionAlignment)
1011 einfo (_("%P: warning, file alignment > section alignment.\n"));
1015 /* This is called after the linker script and the command line options
1019 gld_${EMULATION_NAME}_after_parse (void)
1021 /* PR ld/6744: Warn the user if they have used an ELF-only
1022 option hoping it will work on PE. */
1023 if (link_info.export_dynamic)
1024 einfo (_("%P: warning: --export-dynamic is not supported for PE "
1025 "targets, did you mean --export-all-symbols?\n"));
1029 after_parse_default ();
1032 /* pe-dll.c directly accesses pe_data_import_dll,
1033 so it must be defined outside of #ifdef DLL_SUPPORT.
1034 Note - this variable is deliberately not initialised.
1035 This allows it to be treated as a common varaible, and only
1036 exist in one incarnation in a multiple target enabled linker. */
1037 char * pe_data_import_dll;
1040 static struct bfd_link_hash_entry *pe_undef_found_sym;
1043 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
1047 const char *hs = h->root.string;
1049 sl = strlen (string);
1050 if (h->type == bfd_link_hash_defined
1051 && ((*hs == '@' && *string == '_'
1052 && strncmp (hs + 1, string + 1, sl - 1) == 0)
1053 || strncmp (hs, string, sl) == 0)
1054 && h->root.string[sl] == '@')
1056 pe_undef_found_sym = h;
1062 /* Change UNDEF to a defined symbol, taking data from SYM. */
1065 change_undef (struct bfd_link_hash_entry * undef,
1066 struct bfd_link_hash_entry * sym)
1068 static bfd_boolean gave_warning_message = FALSE;
1070 undef->type = bfd_link_hash_defined;
1071 undef->u.def.value = sym->u.def.value;
1072 undef->u.def.section = sym->u.def.section;
1074 if (pe_enable_stdcall_fixup == -1)
1076 einfo (_("Warning: resolving %s by linking to %s\n"),
1077 undef->root.string, sym->root.string);
1079 if (! gave_warning_message)
1081 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1082 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1083 gave_warning_message = TRUE;
1087 /* PR 19803: Make sure that the linked symbol is not garbage collected. */
1088 lang_add_gc_name (sym->root.string);
1092 pe_fixup_stdcalls (void)
1094 struct bfd_link_hash_entry *undef, *sym;
1096 if (pe_dll_extra_pe_debug)
1097 printf ("%s\n", __FUNCTION__);
1099 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1100 if (undef->type == bfd_link_hash_undefined)
1102 const char * name = undef->root.string;
1104 int lead_at = (*name == '@');
1107 at = strchr (name + 1, '@');
1109 at = strchr (name, '@');
1113 /* The symbol is a stdcall symbol, so let's look for a
1114 cdecl symbol with the same name and resolve to that. */
1115 char *cname = xstrdup (name);
1120 * strchr (cname, '@') = 0;
1121 sym = bfd_link_hash_lookup (link_info.hash, cname, FALSE, FALSE, TRUE);
1123 if (sym && sym->type == bfd_link_hash_defined)
1124 change_undef (undef, sym);
1128 /* The symbol is a cdecl symbol, so we look for stdcall
1129 symbols - which means scanning the whole symbol table. */
1130 pe_undef_found_sym = NULL;
1131 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
1133 if (pe_undef_found_sym)
1134 change_undef (undef, pe_undef_found_sym);
1140 make_import_fixup (arelent *rel, asection *s)
1142 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1145 if (pe_dll_extra_pe_debug)
1146 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1147 (unsigned long) rel->address, (long) rel->addend);
1149 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
1150 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
1151 s->owner, s, rel->address);
1153 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
1159 pe_find_data_imports (void)
1161 struct bfd_link_hash_entry *undef, *sym;
1163 if (link_info.pei386_auto_import == 0)
1166 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1168 if (undef->type == bfd_link_hash_undefined)
1170 /* C++ symbols are *long*. */
1171 #define BUF_SIZE 4096
1174 if (pe_dll_extra_pe_debug)
1175 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1177 if (strlen (undef->root.string) > (BUF_SIZE - 6))
1179 /* PR linker/18466. */
1180 einfo (_("%P: internal error: symbol too long: %s\n"),
1181 undef->root.string);
1185 sprintf (buf, "__imp_%s", undef->root.string);
1187 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
1189 if (sym && sym->type == bfd_link_hash_defined)
1191 bfd *b = sym->u.def.section->owner;
1195 if (link_info.pei386_auto_import == -1)
1197 static bfd_boolean warned = FALSE;
1199 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
1200 undef->root.string, buf);
1202 /* PR linker/4844. */
1206 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
1207 This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
1211 if (!bfd_generic_link_read_symbols (b))
1213 einfo (_("%B%F: could not read symbols: %E\n"), b);
1217 symbols = bfd_get_outsymbols (b);
1218 nsyms = bfd_get_symcount (b);
1220 for (i = 0; i < nsyms; i++)
1222 if (! CONST_STRNEQ (symbols[i]->name,
1226 if (pe_dll_extra_pe_debug)
1227 printf ("->%s\n", symbols[i]->name);
1229 pe_data_import_dll = (char *) (symbols[i]->name
1230 + U_SIZE ("_head_") - 1);
1234 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
1237 /* Let's differentiate it somehow from defined. */
1238 undef->type = bfd_link_hash_defweak;
1239 /* We replace original name with __imp_ prefixed, this
1240 1) may trash memory 2) leads to duplicate symbol generation.
1241 Still, IMHO it's better than having name poluted. */
1242 undef->root.string = sym->root.string;
1243 undef->u.def.value = sym->u.def.value;
1244 undef->u.def.section = sym->u.def.section;
1251 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1253 printf ("+%s\n", h->string);
1257 #endif /* DLL_SUPPORT */
1260 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1262 int *found = (int *) obj;
1263 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1268 pecoff_checksum_contents (bfd *abfd,
1269 void (*process) (const void *, size_t, void *),
1272 file_ptr filepos = (file_ptr) 0;
1279 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
1282 status = bfd_bread (&b, (bfd_size_type) 1, abfd);
1288 (*process) (&b, 1, arg);
1296 write_build_id (bfd *abfd)
1298 struct pe_tdata *t = pe_data (abfd);
1300 struct bfd_link_order *link_order = NULL;
1301 unsigned char *contents;
1303 bfd_size_type build_id_size;
1304 unsigned char *build_id;
1306 /* Find the section the .buildid output section has been merged info. */
1307 for (asec = abfd->sections; asec != NULL; asec = asec->next)
1309 struct bfd_link_order *l = NULL;
1310 for (l = asec->map_head.link_order; l != NULL; l = l->next)
1312 if (l->type == bfd_indirect_link_order)
1314 if (l->u.indirect.section == t->build_id.sec)
1328 einfo (_("%P: warning: .buildid section discarded,"
1329 " --build-id ignored.\n"));
1333 if (t->build_id.sec->contents == NULL)
1334 t->build_id.sec->contents = (unsigned char *) xmalloc (t->build_id.sec->size);
1335 contents = t->build_id.sec->contents;
1336 size = t->build_id.sec->size;
1338 build_id_size = compute_build_id_size (t->build_id.style);
1339 build_id = xmalloc (build_id_size);
1340 generate_build_id (abfd, t->build_id.style, pecoff_checksum_contents, build_id, build_id_size);
1342 bfd_vma ib = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase;
1344 /* Construct a debug directory entry which points to an immediately following CodeView record. */
1345 struct internal_IMAGE_DEBUG_DIRECTORY idd;
1346 idd.Characteristics = 0;
1347 idd.TimeDateStamp = 0;
1348 idd.MajorVersion = 0;
1349 idd.MinorVersion = 0;
1350 idd.Type = PE_IMAGE_DEBUG_TYPE_CODEVIEW;
1351 idd.SizeOfData = sizeof (CV_INFO_PDB70) + 1;
1352 idd.AddressOfRawData = asec->vma - ib + link_order->offset
1353 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1354 idd.PointerToRawData = asec->filepos + link_order->offset
1355 + sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1357 struct external_IMAGE_DEBUG_DIRECTORY *ext = (struct external_IMAGE_DEBUG_DIRECTORY *)contents;
1358 _bfd_XXi_swap_debugdir_out (abfd, &idd, ext);
1360 /* Write the debug directory entry. */
1361 if (bfd_seek (abfd, asec->filepos + link_order->offset, SEEK_SET) != 0)
1364 if (bfd_bwrite (contents, size, abfd) != size)
1367 /* Construct the CodeView record. */
1368 CODEVIEW_INFO cvinfo;
1369 cvinfo.CVSignature = CVINFO_PDB70_CVSIGNATURE;
1372 /* Zero pad or truncate the generated build_id to fit in the CodeView record. */
1373 memset (&(cvinfo.Signature), 0, CV_INFO_SIGNATURE_LENGTH);
1374 memcpy (&(cvinfo.Signature), build_id, (build_id_size > CV_INFO_SIGNATURE_LENGTH)
1375 ? CV_INFO_SIGNATURE_LENGTH : build_id_size);
1379 /* Write the codeview record. */
1380 if (_bfd_XXi_write_codeview_record (abfd, idd.PointerToRawData, &cvinfo) == 0)
1383 /* Record the location of the debug directory in the data directory. */
1384 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
1385 = asec->vma - ib + link_order->offset;
1386 pe_data (link_info.output_bfd)->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
1387 = sizeof (struct external_IMAGE_DEBUG_DIRECTORY);
1392 /* Make .buildid section, and set up coff_tdata->build_id. */
1394 setup_build_id (bfd *ibfd)
1399 if (!validate_build_id_style (emit_build_id))
1401 einfo ("%P: warning: unrecognized --build-id style ignored.\n");
1405 flags = (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
1406 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
1407 s = bfd_make_section_anyway_with_flags (ibfd, ".buildid", flags);
1410 struct pe_tdata *t = pe_data (link_info.output_bfd);
1411 t->build_id.after_write_object_contents = &write_build_id;
1412 t->build_id.style = emit_build_id;
1413 t->build_id.sec = s;
1415 /* Section is a fixed size:
1416 One IMAGE_DEBUG_DIRECTORY entry, of type IMAGE_DEBUG_TYPE_CODEVIEW,
1417 pointing at a CV_INFO_PDB70 record containing the build-id, with a
1418 null byte for PdbFileName. */
1419 s->size = sizeof (struct external_IMAGE_DEBUG_DIRECTORY)
1420 + sizeof (CV_INFO_PDB70) + 1;
1425 einfo ("%P: warning: Cannot create .buildid section,"
1426 " --build-id ignored.\n");
1431 gld_${EMULATION_NAME}_after_open (void)
1433 after_open_default ();
1436 if (pe_dll_extra_pe_debug)
1439 struct bfd_link_hash_entry *sym;
1441 printf ("%s()\n", __FUNCTION__);
1443 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1444 printf ("-%s\n", sym->root.string);
1445 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1447 for (a = link_info.input_bfds; a; a = a->link.next)
1448 printf ("*%s\n",a->filename);
1452 if (emit_build_id != NULL)
1456 /* Find a COFF input. */
1457 for (abfd = link_info.input_bfds;
1458 abfd != (bfd *) NULL; abfd = abfd->link.next)
1459 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
1462 /* If there are no COFF input files do not try to
1463 add a build-id section. */
1465 || !setup_build_id (abfd))
1467 free ((char *) emit_build_id);
1468 emit_build_id = NULL;
1472 /* Pass the wacky PE command line options into the output bfd.
1473 FIXME: This should be done via a function, rather than by
1474 including an internal BFD header. */
1476 if (coff_data (link_info.output_bfd) == NULL
1477 || coff_data (link_info.output_bfd)->pe == 0)
1478 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1479 link_info.output_bfd);
1481 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1482 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1483 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1484 pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
1486 /* At this point we must decide whether to use long section names
1487 in the output or not. If the user hasn't explicitly specified
1488 on the command line, we leave it to the default for the format
1489 (object files yes, image files no), except if there is debug
1490 information present; GDB relies on the long section names to
1491 find it, so enable it in that case. */
1492 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1494 if (bfd_link_relocatable (&link_info))
1495 pe_use_coff_long_section_names = 1;
1498 /* Iterate over all sections of all input BFDs, checking
1499 for any that begin 'debug_' and are long names. */
1500 LANG_FOR_EACH_INPUT_STATEMENT (is)
1502 int found_debug = 0;
1504 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1507 pe_use_coff_long_section_names = 1;
1514 pe_output_file_set_long_section_names (link_info.output_bfd);
1517 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1518 pe_fixup_stdcalls ();
1520 pe_process_import_defs (link_info.output_bfd, &link_info);
1522 pe_find_data_imports ();
1524 /* As possibly new symbols are added by imports, we rerun
1525 stdcall/fastcall fixup here. */
1526 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1527 pe_fixup_stdcalls ();
1529 #if defined (TARGET_IS_i386pe) \
1530 || defined (TARGET_IS_armpe) \
1531 || defined (TARGET_IS_arm_epoc_pe) \
1532 || defined (TARGET_IS_arm_wince_pe)
1533 if (!bfd_link_relocatable (&link_info))
1534 pe_dll_build_sections (link_info.output_bfd, &link_info);
1536 if (bfd_link_pic (&link_info))
1537 pe_dll_build_sections (link_info.output_bfd, &link_info);
1539 pe_exe_build_sections (link_info.output_bfd, &link_info);
1541 #endif /* DLL_SUPPORT */
1543 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1544 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1546 /* The arm backend needs special fields in the output hash structure.
1547 These will only be created if the output format is an arm format,
1548 hence we do not support linking and changing output formats at the
1549 same time. Use a link followed by objcopy to change output formats. */
1550 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1554 /* Find a BFD that can hold the interworking stubs. */
1555 LANG_FOR_EACH_INPUT_STATEMENT (is)
1557 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1564 /* This next chunk of code tries to detect the case where you have
1565 two import libraries for the same DLL (specifically,
1566 symbolically linking libm.a and libc.a in cygwin to
1567 libcygwin.a). In those cases, it's possible for function
1568 thunks from the second implib to be used but without the
1569 head/tail objects, causing an improper import table. We detect
1570 those cases and rename the "other" import libraries to match
1571 the one the head/tail come from, so that the linker will sort
1572 things nicely and produce a valid import table. */
1574 LANG_FOR_EACH_INPUT_STATEMENT (is)
1576 if (is->the_bfd->my_archive)
1578 int idata2 = 0, reloc_count=0, is_imp = 0;
1581 /* See if this is an import library thunk. */
1582 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1584 if (strcmp (sec->name, ".idata\$2") == 0)
1586 if (CONST_STRNEQ (sec->name, ".idata\$"))
1588 reloc_count += sec->reloc_count;
1591 if (is_imp && !idata2 && reloc_count)
1593 /* It is, look for the reference to head and see if it's
1594 from our own library. */
1595 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1603 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1607 if (!bfd_generic_link_read_symbols (is->the_bfd))
1609 einfo (_("%B%F: could not read symbols: %E\n"),
1613 symbols = bfd_get_outsymbols (is->the_bfd);
1615 relocs = xmalloc ((size_t) relsize);
1616 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1621 einfo ("%X%P: unable to process relocs: %E\n");
1625 for (i = 0; i < nrelocs; i++)
1627 struct bfd_symbol *s;
1628 struct bfd_link_hash_entry * blhe;
1629 char *other_bfd_filename;
1632 s = (relocs[i]->sym_ptr_ptr)[0];
1634 if (s->flags & BSF_LOCAL)
1637 /* Thunk section with reloc to another bfd. */
1638 blhe = bfd_link_hash_lookup (link_info.hash,
1640 FALSE, FALSE, TRUE);
1643 || blhe->type != bfd_link_hash_defined)
1647 = blhe->u.def.section->owner->my_archive
1648 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1649 : bfd_get_filename (blhe->u.def.section->owner);
1651 if (filename_cmp (bfd_get_filename
1652 (is->the_bfd->my_archive),
1653 other_bfd_filename) == 0)
1656 /* Rename this implib to match the other one. */
1657 n = xmalloc (strlen (other_bfd_filename) + 1);
1658 strcpy (n, other_bfd_filename);
1659 is->the_bfd->my_archive->filename = n;
1663 /* Note - we do not free the symbols,
1664 they are now cached in the BFD. */
1674 lang_input_statement_type *is2;
1675 lang_input_statement_type *is3;
1677 /* Careful - this is a shell script. Watch those dollar signs! */
1678 /* Microsoft import libraries have every member named the same,
1679 and not in the right order for us to link them correctly. We
1680 must detect these and rename the members so that they'll link
1681 correctly. There are three types of objects: the head, the
1682 thunks, and the sentinel(s). The head is easy; it's the one
1683 with idata2. We assume that the sentinels won't have relocs,
1684 and the thunks will. It's easier than checking the symbol
1685 table for external references. */
1686 LANG_FOR_EACH_INPUT_STATEMENT (is)
1688 if (is->the_bfd->my_archive)
1691 bfd *arch = is->the_bfd->my_archive;
1693 if (cur_arch != arch)
1699 is3 && is3->the_bfd->my_archive == arch;
1700 is3 = (lang_input_statement_type *) is3->next)
1702 /* A MS dynamic import library can also contain static
1703 members, so look for the first element with a .dll
1704 extension, and use that for the remainder of the
1706 pnt = strrchr (is3->the_bfd->filename, '.');
1707 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0)
1715 /* OK, found one. Now look to see if the remaining
1716 (dynamic import) members use the same name. */
1718 is2 && is2->the_bfd->my_archive == arch;
1719 is2 = (lang_input_statement_type *) is2->next)
1721 /* Skip static members, ie anything with a .obj
1723 pnt = strrchr (is2->the_bfd->filename, '.');
1724 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0)
1727 if (filename_cmp (is3->the_bfd->filename,
1728 is2->the_bfd->filename))
1737 /* This fragment might have come from an .obj file in a Microsoft
1738 import, and not an actual import record. If this is the case,
1739 then leave the filename alone. */
1740 pnt = strrchr (is->the_bfd->filename, '.');
1742 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0))
1744 int idata2 = 0, reloc_count=0;
1746 char *new_name, seq;
1748 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1750 if (strcmp (sec->name, ".idata\$2") == 0)
1752 reloc_count += sec->reloc_count;
1755 if (idata2) /* .idata2 is the TOC */
1757 else if (reloc_count > 0) /* thunks */
1762 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1763 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1764 is->the_bfd->filename = new_name;
1766 new_name = xmalloc (strlen (is->filename) + 3);
1767 sprintf (new_name, "%s.%c", is->filename, seq);
1768 is->filename = new_name;
1775 /* The following chunk of code tries to identify jump stubs in
1776 import libraries which are dead code and eliminates them
1777 from the final link. For each exported symbol <sym>, there
1778 is a object file in the import library with a .text section
1779 and several .idata\$* sections. The .text section contains the
1780 symbol definition for <sym> which is a jump stub of the form
1781 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1782 for __imp_<sym> which is the address of the slot for <sym> in
1783 the import address table. When a symbol is imported explicitly
1784 using __declspec(dllimport) declaration, the compiler generates
1785 a reference to __imp_<sym> which directly resolves to the
1786 symbol in .idata\$5, in which case the jump stub code is not
1787 needed. The following code tries to identify jump stub sections
1788 in import libraries which are not referred to by anyone and
1789 marks them for exclusion from the final link. */
1790 LANG_FOR_EACH_INPUT_STATEMENT (is)
1792 if (is->the_bfd->my_archive)
1795 asection *sec, *stub_sec = NULL;
1797 /* See if this is an import library thunk. */
1798 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1800 if (strncmp (sec->name, ".idata\$", 7) == 0)
1802 /* The section containing the jmp stub has code
1804 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1808 if (is_imp && stub_sec)
1811 long nsyms, src_count;
1812 struct bfd_link_hash_entry * blhe;
1814 if (!bfd_generic_link_read_symbols (is->the_bfd))
1816 einfo (_("%B%F: could not read symbols: %E\n"),
1820 symbols = bfd_get_outsymbols (is->the_bfd);
1821 nsyms = bfd_get_symcount (is->the_bfd);
1823 for (src_count = 0; src_count < nsyms; src_count++)
1825 if (symbols[src_count]->section->id == stub_sec->id)
1827 /* This symbol belongs to the section containing
1829 blhe = bfd_link_hash_lookup (link_info.hash,
1830 symbols[src_count]->name,
1831 FALSE, FALSE, TRUE);
1832 /* If the symbol in the stub section has no other
1833 undefined references, exclude the stub section
1834 from the final link. */
1836 && blhe->type == bfd_link_hash_defined
1837 && blhe->u.undef.next == NULL
1838 && blhe != link_info.hash->undefs_tail)
1839 stub_sec->flags |= SEC_EXCLUDE;
1849 gld_${EMULATION_NAME}_before_allocation (void)
1851 #ifdef TARGET_IS_ppcpe
1852 /* Here we rummage through the found bfds to collect toc information. */
1854 LANG_FOR_EACH_INPUT_STATEMENT (is)
1856 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1858 /* xgettext:c-format */
1859 einfo (_("Errors encountered processing file %s\n"), is->filename);
1864 /* We have seen it all. Allocate it, and carry on. */
1865 ppc_allocate_toc_section (&link_info);
1866 #endif /* TARGET_IS_ppcpe */
1868 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1869 /* FIXME: we should be able to set the size of the interworking stub
1872 Here we rummage through the found bfds to collect glue
1873 information. FIXME: should this be based on a command line
1874 option? krk@cygnus.com. */
1876 LANG_FOR_EACH_INPUT_STATEMENT (is)
1878 if (! bfd_arm_process_before_allocation
1879 (is->the_bfd, & link_info, support_old_code))
1881 /* xgettext:c-format */
1882 einfo (_("Errors encountered processing file %s for interworking\n"),
1888 /* We have seen it all. Allocate it, and carry on. */
1889 bfd_arm_allocate_interworking_sections (& link_info);
1890 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1892 before_allocation_default ();
1896 /* This is called when an input file isn't recognized as a BFD. We
1897 check here for .DEF files and pull them in automatically. */
1900 saw_option (char *option)
1904 for (i = 0; init[i].ptr; i++)
1905 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1906 return init[i].inited;
1909 #endif /* DLL_SUPPORT */
1912 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1915 const char *ext = entry->filename + strlen (entry->filename) - 4;
1917 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
1919 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1923 int i, buflen=0, len;
1926 for (i = 0; i < pe_def_file->num_exports; i++)
1928 len = strlen (pe_def_file->exports[i].internal_name);
1929 if (buflen < len + 2)
1933 buf = xmalloc (buflen);
1935 for (i = 0; i < pe_def_file->num_exports; i++)
1937 struct bfd_link_hash_entry *h;
1939 sprintf (buf, "%s%s", U (""),
1940 pe_def_file->exports[i].internal_name);
1942 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1943 if (h == (struct bfd_link_hash_entry *) NULL)
1944 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1945 if (h->type == bfd_link_hash_new)
1947 h->type = bfd_link_hash_undefined;
1948 h->u.undef.abfd = NULL;
1949 bfd_link_add_undef (link_info.hash, h);
1954 /* def_file_print (stdout, pe_def_file); */
1955 if (pe_def_file->is_dll == 1)
1956 link_info.type = type_dll;
1958 if (pe_def_file->base_address != (bfd_vma)(-1))
1961 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1962 = init[IMAGEBASEOFF].value
1963 = pe_def_file->base_address;
1964 init[IMAGEBASEOFF].inited = 1;
1965 if (image_base_statement)
1966 image_base_statement->exp
1967 = exp_assign ("__image_base__", exp_intop (pe.ImageBase),
1971 if (pe_def_file->stack_reserve != -1
1972 && ! saw_option ("__size_of_stack_reserve__"))
1974 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1975 if (pe_def_file->stack_commit != -1)
1976 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1978 if (pe_def_file->heap_reserve != -1
1979 && ! saw_option ("__size_of_heap_reserve__"))
1981 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1982 if (pe_def_file->heap_commit != -1)
1983 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1993 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1996 #ifdef TARGET_IS_i386pe
1997 pe_dll_id_target ("pei-i386");
1999 #ifdef TARGET_IS_shpe
2000 pe_dll_id_target ("pei-shl");
2002 #ifdef TARGET_IS_armpe
2003 pe_dll_id_target ("pei-arm-little");
2005 #ifdef TARGET_IS_arm_epoc_pe
2006 pe_dll_id_target ("epoc-pei-arm-little");
2008 #ifdef TARGET_IS_arm_wince_pe
2009 pe_dll_id_target ("pei-arm-wince-little");
2011 if (pe_bfd_is_dll (entry->the_bfd))
2012 return pe_implied_import_dll (entry->filename);
2018 gld_${EMULATION_NAME}_finish (void)
2020 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
2021 struct bfd_link_hash_entry * h;
2023 if (thumb_entry_symbol != NULL)
2025 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
2026 FALSE, FALSE, TRUE);
2028 if (h != (struct bfd_link_hash_entry *) NULL
2029 && (h->type == bfd_link_hash_defined
2030 || h->type == bfd_link_hash_defweak)
2031 && h->u.def.section->output_section != NULL)
2033 static char buffer[32];
2036 /* Special procesing is required for a Thumb entry symbol. The
2037 bottom bit of its address must be set. */
2038 val = (h->u.def.value
2039 + bfd_get_section_vma (link_info.output_bfd,
2040 h->u.def.section->output_section)
2041 + h->u.def.section->output_offset);
2045 /* Now convert this value into a string and store it in entry_symbol
2046 where the lang_finish() function will pick it up. */
2050 sprintf_vma (buffer + 2, val);
2052 if (entry_symbol.name != NULL && entry_from_cmdline)
2053 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
2054 thumb_entry_symbol, entry_symbol.name);
2055 entry_symbol.name = buffer;
2058 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
2060 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
2065 if (bfd_link_pic (&link_info)
2066 #if !defined(TARGET_IS_shpe)
2067 || (!bfd_link_relocatable (&link_info)
2068 && pe_def_file->num_exports != 0)
2072 pe_dll_fill_sections (link_info.output_bfd, &link_info);
2073 if (pe_implib_filename)
2074 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info);
2076 #if defined(TARGET_IS_shpe)
2077 /* ARM doesn't need relocs. */
2080 pe_exe_fill_sections (link_info.output_bfd, &link_info);
2084 if (pe_out_def_filename)
2085 pe_dll_generate_def_file (pe_out_def_filename);
2086 #endif /* DLL_SUPPORT */
2088 /* I don't know where .idata gets set as code, but it shouldn't be. */
2090 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
2094 asec->flags &= ~SEC_CODE;
2095 asec->flags |= SEC_DATA;
2101 /* Place an orphan section.
2103 We use this to put sections in a reasonable place in the file, and
2104 to ensure that they are aligned as required.
2106 We handle grouped sections here as well. A section named .foo\$nn
2107 goes into the output section .foo. All grouped sections are sorted
2110 Grouped sections for the default sections are handled by the
2111 default linker script using wildcards, and are sorted by
2114 static lang_output_section_statement_type *
2115 gld_${EMULATION_NAME}_place_orphan (asection *s,
2116 const char *secname,
2119 const char *orig_secname = secname;
2120 char *dollar = NULL;
2121 lang_output_section_statement_type *os;
2122 lang_statement_list_type add_child;
2123 lang_output_section_statement_type *match_by_name = NULL;
2124 lang_statement_union_type **pl;
2126 /* Look through the script to see where to place this section. */
2127 if (!bfd_link_relocatable (&link_info)
2128 && (dollar = strchr (secname, '\$')) != NULL)
2130 size_t len = dollar - secname;
2131 char *newname = xmalloc (len + 1);
2132 memcpy (newname, secname, len);
2133 newname[len] = '\0';
2137 lang_list_init (&add_child);
2140 if (constraint == 0)
2141 for (os = lang_output_section_find (secname);
2143 os = next_matching_output_section_statement (os, 0))
2145 /* If we don't match an existing output section, tell
2146 lang_insert_orphan to create a new output section. */
2147 constraint = SPECIAL;
2149 if (os->bfd_section != NULL
2150 && (os->bfd_section->flags == 0
2151 || ((s->flags ^ os->bfd_section->flags)
2152 & (SEC_LOAD | SEC_ALLOC)) == 0))
2154 /* We already have an output section statement with this
2155 name, and its bfd section has compatible flags.
2156 If the section already exists but does not have any flags set,
2157 then it has been created by the linker, probably as a result of
2158 a --section-start command line switch. */
2159 lang_add_section (&add_child, s, NULL, os);
2163 /* Save unused output sections in case we can match them
2164 against orphans later. */
2165 if (os->bfd_section == NULL)
2169 /* If we didn't match an active output section, see if we matched an
2170 unused one and use that. */
2171 if (os == NULL && match_by_name)
2173 lang_add_section (&match_by_name->children, s, NULL, match_by_name);
2174 return match_by_name;
2179 static struct orphan_save hold[] =
2182 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
2185 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
2188 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
2191 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
2197 enum orphan_save_index
2205 static int orphan_init_done = 0;
2206 struct orphan_save *place;
2207 lang_output_section_statement_type *after;
2208 etree_type *address;
2212 if (!orphan_init_done)
2214 struct orphan_save *ho;
2215 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
2216 if (ho->name != NULL)
2218 ho->os = lang_output_section_find (ho->name);
2219 if (ho->os != NULL && ho->os->flags == 0)
2220 ho->os->flags = ho->flags;
2222 orphan_init_done = 1;
2226 if (!bfd_link_relocatable (&link_info))
2229 while ((nexts = bfd_get_next_section_by_name (nexts->owner,
2231 if (nexts->output_section == NULL
2232 && (nexts->flags & SEC_EXCLUDE) == 0
2233 && ((nexts->flags ^ flags) & (SEC_LOAD | SEC_ALLOC)) == 0
2234 && (nexts->owner->flags & DYNAMIC) == 0
2235 && nexts->owner->usrdata != NULL
2236 && !(((lang_input_statement_type *) nexts->owner->usrdata)
2238 flags = (((flags ^ SEC_READONLY)
2239 | (nexts->flags ^ SEC_READONLY))
2243 /* Try to put the new output section in a reasonable place based
2244 on the section name and section flags. */
2247 if ((flags & SEC_ALLOC) == 0)
2249 else if ((flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2250 place = &hold[orphan_bss];
2251 else if ((flags & SEC_READONLY) == 0)
2252 place = &hold[orphan_data];
2253 else if ((flags & SEC_CODE) == 0)
2255 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
2256 : &hold[orphan_rodata]);
2259 place = &hold[orphan_text];
2264 if (place->os == NULL)
2265 place->os = lang_output_section_find (place->name);
2268 after = lang_output_section_find_by_flags (s, flags, &place->os,
2271 /* *ABS* is always the first output section statement. */
2272 after = (&lang_output_section_statement.head
2273 ->output_section_statement);
2276 /* All sections in an executable must be aligned to a page boundary.
2277 In a relocatable link, just preserve the incoming alignment; the
2278 address is discarded by lang_insert_orphan in that case, anyway. */
2279 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2280 os = lang_insert_orphan (s, secname, constraint, after, place, address,
2282 if (bfd_link_relocatable (&link_info))
2284 os->section_alignment = s->alignment_power;
2285 os->bfd_section->alignment_power = s->alignment_power;
2289 /* If the section name has a '\$', sort it with the other '\$'
2291 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2293 lang_input_section_type *ls;
2296 if ((*pl)->header.type != lang_input_section_enum)
2299 ls = &(*pl)->input_section;
2301 lname = bfd_get_section_name (ls->section->owner, ls->section);
2302 if (strchr (lname, '\$') != NULL
2303 && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2307 if (add_child.head != NULL)
2309 *add_child.tail = *pl;
2310 *pl = add_child.head;
2317 gld_${EMULATION_NAME}_open_dynamic_archive
2318 (const char *arch ATTRIBUTE_UNUSED,
2319 search_dirs_type *search,
2320 lang_input_statement_type *entry)
2324 const char * format;
2325 bfd_boolean use_prefix;
2329 /* Preferred explicit import library for dll's. */
2330 { "lib%s.dll.a", FALSE },
2331 /* Alternate explicit import library for dll's. */
2332 { "%s.dll.a", FALSE },
2333 /* "libfoo.a" could be either an import lib or a static lib.
2334 For backwards compatibility, libfoo.a needs to precede
2335 libfoo.dll and foo.dll in the search. */
2336 { "lib%s.a", FALSE },
2337 /* The 'native' spelling of an import lib name is "foo.lib". */
2338 { "%s.lib", FALSE },
2340 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
2341 { "%s%s.dll", TRUE },
2343 /* Try "libfoo.dll" (default preferred dll name). */
2344 { "lib%s.dll", FALSE },
2345 /* Finally try 'native' dll name "foo.dll". */
2346 { "%s.dll", FALSE },
2347 /* Note: If adding more formats to this table, make sure to check to
2348 see if their length is longer than libname_fmt[0].format, and if
2349 so, update the call to xmalloc() below. */
2352 static unsigned int format_max_len = 0;
2353 const char * filename;
2359 if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
2362 filename = entry->filename;
2364 if (format_max_len == 0)
2365 /* We need to allow space in the memory that we are going to allocate
2366 for the characters in the format string. Since the format array is
2367 static we only need to calculate this information once. In theory
2368 this value could also be computed statically, but this introduces
2369 the possibility for a discrepancy and hence a possible memory
2370 corruption. The lengths we compute here will be too long because
2371 they will include any formating characters (%s) in the strings, but
2372 this will not matter. */
2373 for (i = 0; libname_fmt[i].format; i++)
2374 if (format_max_len < strlen (libname_fmt[i].format))
2375 format_max_len = strlen (libname_fmt[i].format);
2377 full_string = xmalloc (strlen (search->name)
2381 + (pe_dll_search_prefix
2382 ? strlen (pe_dll_search_prefix) : 0)
2384 /* Allow for the terminating NUL and for the path
2385 separator character that is inserted between
2386 search->name and the start of the format string. */
2389 sprintf (full_string, "%s/", search->name);
2390 base_string = full_string + strlen (full_string);
2392 for (i = 0; libname_fmt[i].format; i++)
2395 if (libname_fmt[i].use_prefix)
2397 if (!pe_dll_search_prefix)
2399 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
2403 sprintf (base_string, libname_fmt[i].format, filename);
2405 if (ldfile_try_open_bfd (full_string, entry))
2409 if (!libname_fmt[i].format)
2415 entry->filename = full_string;
2421 gld_${EMULATION_NAME}_find_potential_libraries
2422 (char *name, lang_input_statement_type *entry)
2424 return ldfile_open_file_search (name, entry, "", ".lib");
2428 gld_${EMULATION_NAME}_get_script (int *isfile)
2430 # Scripts compiled in.
2431 # sed commands to quote an ld script as a C string.
2432 sc="-f stringify.sed"
2438 if (bfd_link_relocatable (&link_info) && config.build_constructors)
2441 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2442 echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
2443 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2444 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2445 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2446 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2447 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2448 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2449 echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c
2450 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
2452 echo ' ; else return' >> e${EMULATION_NAME}.c
2453 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2454 echo '; }' >> e${EMULATION_NAME}.c
2459 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2461 gld_${EMULATION_NAME}_before_parse,
2464 gld_${EMULATION_NAME}_after_parse,
2465 gld_${EMULATION_NAME}_after_open,
2466 after_allocation_default,
2467 set_output_arch_default,
2468 ldemul_default_target,
2469 gld_${EMULATION_NAME}_before_allocation,
2470 gld_${EMULATION_NAME}_get_script,
2471 "${EMULATION_NAME}",
2473 gld_${EMULATION_NAME}_finish,
2474 NULL, /* Create output section statements. */
2475 gld_${EMULATION_NAME}_open_dynamic_archive,
2476 gld_${EMULATION_NAME}_place_orphan,
2477 gld_${EMULATION_NAME}_set_symbols,
2478 NULL, /* parse_args */
2479 gld${EMULATION_NAME}_add_options,
2480 gld${EMULATION_NAME}_handle_option,
2481 gld_${EMULATION_NAME}_unrecognized_file,
2482 gld_${EMULATION_NAME}_list_options,
2483 gld_${EMULATION_NAME}_recognized_file,
2484 gld_${EMULATION_NAME}_find_potential_libraries,
2485 NULL, /* new_vers_pattern. */
2486 NULL /* extra_map_file_text. */