1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 test -z "${ENTRY}" && ENTRY="_mainCRTStartup"
4 if [ -z "$MACHINE" ]; then
7 OUTPUT_ARCH=${ARCH}:${MACHINE}
9 rm -f e${EMULATION_NAME}.c
10 (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
12 /* Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
13 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
15 This file is part of the GNU Binutils.
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
19 the Free Software Foundation; either version 3 of the License, or
20 (at your option) any later version.
22 This program is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 GNU General Public License for more details.
27 You should have received a copy of the GNU General Public License
28 along with this program; if not, write to the Free Software
29 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
30 MA 02110-1301, USA. */
34 /* The original file generated returned different default scripts depending
35 on whether certain switches were set, but these switches pertain to the
36 Linux system and that particular version of coff. In the NT case, we
37 only determine if the subsystem is console or windows in order to select
38 the correct entry point by default. */
40 #define TARGET_IS_${EMULATION_NAME}
42 /* Do this before including bfd.h, so we prototype the right functions. */
44 #if defined(TARGET_IS_armpe) \
45 || defined(TARGET_IS_arm_epoc_pe) \
46 || defined(TARGET_IS_arm_wince_pe)
47 #define bfd_arm_allocate_interworking_sections \
48 bfd_${EMULATION_NAME}_allocate_interworking_sections
49 #define bfd_arm_get_bfd_for_interworking \
50 bfd_${EMULATION_NAME}_get_bfd_for_interworking
51 #define bfd_arm_process_before_allocation \
52 bfd_${EMULATION_NAME}_process_before_allocation
59 #include "libiberty.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: This is a BFD internal header file, and we should not be
79 #include "../bfd/libcoff.h"
83 #include "safe-ctype.h"
85 /* Permit the emulation parameters to override the default section
86 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
87 it seem that include/coff/internal.h should not define
88 PE_DEF_SECTION_ALIGNMENT. */
89 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
90 #undef PE_DEF_SECTION_ALIGNMENT
91 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
94 #if defined(TARGET_IS_i386pe) \
95 || defined(TARGET_IS_shpe) \
96 || defined(TARGET_IS_mipspe) \
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) || ! defined(DLL_SUPPORT)
104 #define PE_DEF_SUBSYSTEM 3
106 #undef NT_EXE_IMAGE_BASE
107 #undef PE_DEF_SECTION_ALIGNMENT
108 #undef PE_DEF_FILE_ALIGNMENT
109 #define NT_EXE_IMAGE_BASE 0x00010000
111 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
112 #define PE_DEF_SECTION_ALIGNMENT 0x00001000
113 #define PE_DEF_SUBSYSTEM 9
115 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
116 #define PE_DEF_SUBSYSTEM 2
118 #define PE_DEF_FILE_ALIGNMENT 0x00000200
121 #define U(S) ${INITIAL_SYMBOL_CHAR} S
123 static struct internal_extra_pe_aouthdr pe;
125 static flagword real_flags = 0;
126 static int support_old_code = 0;
127 static char * thumb_entry_symbol = NULL;
128 static lang_assignment_statement_type *image_base_statement = 0;
131 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
132 static char *pe_out_def_filename = NULL;
133 static char *pe_implib_filename = NULL;
134 static int pe_enable_auto_image_base = 0;
135 static char *pe_dll_search_prefix = NULL;
138 extern const char *output_filename;
141 gld_${EMULATION_NAME}_before_parse (void)
143 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
144 output_filename = "${EXECUTABLE_NAME:-a.exe}";
146 config.dynamic_link = TRUE;
147 config.has_shared = 1;
148 link_info.pei386_auto_import = -1;
149 link_info.pei386_runtime_pseudo_reloc = 1; /* Use by default version 1. */
151 #if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
152 #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe || defined TARGET_IS_arm_wince_pe
153 lang_default_entry ("WinMainCRTStartup");
155 lang_default_entry ("_WinMainCRTStartup");
158 lang_default_entry ("${ENTRY}");
163 /* PE format extra command line options. */
165 /* Used for setting flags in the PE header. */
166 #define OPTION_BASE_FILE (300 + 1)
167 #define OPTION_DLL (OPTION_BASE_FILE + 1)
168 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
169 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
170 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
171 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
172 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
173 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
174 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
175 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
176 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
177 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
178 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
179 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
180 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
181 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
182 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
183 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
184 #define OPTION_KILL_ATS (OPTION_EXCLUDE_SYMBOLS + 1)
185 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
186 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
187 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
188 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
189 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
190 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
191 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
192 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
193 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
194 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
195 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
196 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
197 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
198 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
199 #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
200 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
201 (OPTION_EXCLUDE_LIBS + 1)
202 #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
203 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
204 #define OPTION_LARGE_ADDRESS_AWARE \
205 (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
206 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
207 (OPTION_LARGE_ADDRESS_AWARE + 1)
208 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
209 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
210 #define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
211 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
212 #define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
213 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
216 gld${EMULATION_NAME}_add_options
217 (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl,
218 struct option **longopts, int nrl ATTRIBUTE_UNUSED,
219 struct option **really_longopts ATTRIBUTE_UNUSED)
221 static const struct option xtra_long[] = {
223 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
224 {"dll", no_argument, NULL, OPTION_DLL},
225 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
226 {"heap", required_argument, NULL, OPTION_HEAP},
227 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
228 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
229 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
230 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
231 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
232 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
233 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
234 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
235 {"stack", required_argument, NULL, OPTION_STACK},
236 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
237 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
238 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
239 {"use-nul-prefixed-import-tables", no_argument, NULL,
240 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
242 /* getopt allows abbreviations, so we do this to stop it from treating -o
243 as an abbreviation for this option */
244 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
245 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
246 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
247 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
248 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
249 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
250 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
251 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
252 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
253 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
254 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
255 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
256 /* getopt() allows abbreviations, so we do this to stop it from
257 treating -c as an abbreviation for these --compat-implib. */
258 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
259 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
260 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
261 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
262 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
263 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
264 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
265 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
266 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
267 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
268 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
269 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
270 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
272 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
273 {NULL, no_argument, NULL, 0}
276 *longopts = (struct option *)
277 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
278 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
281 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
282 parameters which may be input from the command line. */
293 #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
295 static definfo init[] =
297 /* imagebase must be first */
298 #define IMAGEBASEOFF 0
299 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
301 {&dll, sizeof(dll), 0, "__dll__", 0},
302 #define MSIMAGEBASEOFF 2
303 D(ImageBase, U ("__ImageBase"), NT_EXE_IMAGE_BASE),
304 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
305 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
306 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
307 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
308 D(MajorImageVersion,"__major_image_version__", 1),
309 D(MinorImageVersion,"__minor_image_version__", 0),
310 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
311 D(MajorSubsystemVersion,"__major_subsystem_version__", 3),
313 D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
315 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
316 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
317 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
318 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
319 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
320 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
321 D(LoaderFlags,"__loader_flags__", 0x0),
322 { NULL, 0, 0, NULL, 0 }
327 gld_${EMULATION_NAME}_list_options (FILE *file)
329 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
330 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
331 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
332 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
333 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
334 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
335 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
336 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
337 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
338 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
339 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
340 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
341 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
342 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
343 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
344 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
346 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
347 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
348 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
349 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
350 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
351 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
352 fprintf (file, _(" Exclude objects, archive members from auto\n"));
353 fprintf (file, _(" export, place into import library instead.\n"));
354 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
355 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
356 fprintf (file, _(" --out-implib <file> Generate import library\n"));
357 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
358 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
359 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
360 create __imp_<SYMBOL> as well.\n"));
361 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
362 unless user specifies one\n"));
363 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
364 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
365 an importlib, use <string><basename>.dll\n\
366 in preference to lib<basename>.dll \n"));
367 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\
368 __imp_sym for DATA references\n"));
369 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
370 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
371 adding pseudo-relocations resolved at\n\
373 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
374 auto-imported DATA.\n"));
375 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
376 or linking to DLLs (esp. auto-import)\n"));
378 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
379 greater than 2 gigabytes\n"));
384 set_pe_name (char *name, long val)
388 /* Find the name and set it. */
389 for (i = 0; init[i].ptr; i++)
391 if (strcmp (name, init[i].symbol) == 0)
395 if (strcmp (name,"__image_base__") == 0)
396 set_pe_name (U ("__ImageBase"), val);
405 set_pe_subsystem (void)
409 const char *initial_symbol_char;
414 unsigned long temp_subsystem;
423 { "native", 1, "NtProcessStartup" },
424 { "windows", 2, "WinMainCRTStartup" },
425 { "console", 3, "mainCRTStartup" },
426 { "posix", 7, "__PosixProcessStartup"},
427 { "wince", 9, "WinMainCRTStartup" },
428 { "xbox", 14, "mainCRTStartup" },
431 /* Entry point name for arbitrary subsystem numbers. */
432 static const char default_entry[] = "mainCRTStartup";
434 /* Check for the presence of a version number. */
435 sver = strchr (optarg, ':');
437 len = strlen (optarg);
441 set_pe_name ("__major_subsystem_version__",
442 strtoul (sver + 1, &end, 0));
444 set_pe_name ("__minor_subsystem_version__",
445 strtoul (end + 1, &end, 0));
447 einfo (_("%P: warning: bad version number in -subsystem option\n"));
450 /* Check for numeric subsystem. */
451 temp_subsystem = strtoul (optarg, & end, 0);
452 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
454 /* Search list for a numeric match to use its entry point. */
455 for (i = 0; v[i].name; i++)
456 if (v[i].value == (int) temp_subsystem)
459 /* If no match, use the default. */
460 if (v[i].name != NULL)
463 entry = default_entry;
465 /* Use this subsystem. */
466 subsystem = (int) temp_subsystem;
470 /* Search for subsystem by name. */
471 for (i = 0; v[i].name; i++)
472 if (strncmp (optarg, v[i].name, len) == 0
473 && v[i].name[len] == '\0')
476 if (v[i].name == NULL)
478 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
483 subsystem = v[i].value;
486 set_pe_name ("__subsystem__", subsystem);
488 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
489 if (*initial_symbol_char != '\0')
493 /* lang_default_entry expects its argument to be permanently
494 allocated, so we don't free this string. */
495 alc_entry = xmalloc (strlen (initial_symbol_char)
498 strcpy (alc_entry, initial_symbol_char);
499 strcat (alc_entry, entry);
503 lang_default_entry (entry);
510 set_pe_value (char *name)
514 set_pe_name (name, strtoul (optarg, &end, 0));
517 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
524 set_pe_stack_heap (char *resname, char *comname)
526 set_pe_value (resname);
531 set_pe_value (comname);
534 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
539 gld${EMULATION_NAME}_handle_option (int optc)
546 case OPTION_BASE_FILE:
547 link_info.base_file = fopen (optarg, FOPEN_WB);
548 if (link_info.base_file == NULL)
550 /* xgettext:c-format */
551 fprintf (stderr, _("%s: Can't open base file %s\n"),
552 program_name, optarg);
559 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
562 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
564 case OPTION_SUBSYSTEM:
567 case OPTION_MAJOR_OS_VERSION:
568 set_pe_value ("__major_os_version__");
570 case OPTION_MINOR_OS_VERSION:
571 set_pe_value ("__minor_os_version__");
573 case OPTION_MAJOR_SUBSYSTEM_VERSION:
574 set_pe_value ("__major_subsystem_version__");
576 case OPTION_MINOR_SUBSYSTEM_VERSION:
577 set_pe_value ("__minor_subsystem_version__");
579 case OPTION_MAJOR_IMAGE_VERSION:
580 set_pe_value ("__major_image_version__");
582 case OPTION_MINOR_IMAGE_VERSION:
583 set_pe_value ("__minor_image_version__");
585 case OPTION_FILE_ALIGNMENT:
586 set_pe_value ("__file_alignment__");
588 case OPTION_SECTION_ALIGNMENT:
589 set_pe_value ("__section_alignment__");
592 set_pe_name ("__dll__", 1);
594 case OPTION_IMAGE_BASE:
595 set_pe_value ("__image_base__");
597 case OPTION_SUPPORT_OLD_CODE:
598 support_old_code = 1;
600 case OPTION_THUMB_ENTRY:
601 thumb_entry_symbol = optarg;
603 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
604 pe_use_nul_prefixed_import_tables = TRUE;
608 pe_out_def_filename = xstrdup (optarg);
610 case OPTION_EXPORT_ALL:
611 pe_dll_export_everything = 1;
613 case OPTION_EXCLUDE_SYMBOLS:
614 pe_dll_add_excludes (optarg, EXCLUDESYMS);
616 case OPTION_EXCLUDE_LIBS:
617 pe_dll_add_excludes (optarg, EXCLUDELIBS);
619 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
620 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
622 case OPTION_KILL_ATS:
625 case OPTION_STDCALL_ALIASES:
626 pe_dll_stdcall_aliases = 1;
628 case OPTION_ENABLE_STDCALL_FIXUP:
629 pe_enable_stdcall_fixup = 1;
631 case OPTION_DISABLE_STDCALL_FIXUP:
632 pe_enable_stdcall_fixup = 0;
634 case OPTION_IMPLIB_FILENAME:
635 pe_implib_filename = xstrdup (optarg);
637 case OPTION_WARN_DUPLICATE_EXPORTS:
638 pe_dll_warn_dup_exports = 1;
640 case OPTION_IMP_COMPAT:
641 pe_dll_compat_implib = 1;
643 case OPTION_ENABLE_AUTO_IMAGE_BASE:
644 pe_enable_auto_image_base = 1;
646 case OPTION_DISABLE_AUTO_IMAGE_BASE:
647 pe_enable_auto_image_base = 0;
649 case OPTION_DLL_SEARCH_PREFIX:
650 pe_dll_search_prefix = xstrdup (optarg);
652 case OPTION_NO_DEFAULT_EXCLUDES:
653 pe_dll_do_default_excludes = 0;
655 case OPTION_DLL_ENABLE_AUTO_IMPORT:
656 link_info.pei386_auto_import = 1;
658 case OPTION_DLL_DISABLE_AUTO_IMPORT:
659 link_info.pei386_auto_import = 0;
661 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
662 link_info.pei386_runtime_pseudo_reloc = 1;
664 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
665 link_info.pei386_runtime_pseudo_reloc = 1;
667 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
668 link_info.pei386_runtime_pseudo_reloc = 2;
670 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
671 link_info.pei386_runtime_pseudo_reloc = 0;
673 case OPTION_ENABLE_EXTRA_PE_DEBUG:
674 pe_dll_extra_pe_debug = 1;
677 case OPTION_LARGE_ADDRESS_AWARE:
678 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
687 strhash (const char *str)
689 const unsigned char *s;
696 s = (const unsigned char *) str;
697 while ((c = *s++) != '\0')
699 hash += c + (c << 17);
703 hash += len + (len << 17);
709 /* Use the output file to create a image base for relocatable DLLs. */
712 compute_dll_image_base (const char *ofile)
714 unsigned long hash = strhash (ofile);
715 return 0x61300000 + ((hash << 16) & 0x0FFC0000);
719 /* Assign values to the special symbols before the linker script is
723 gld_${EMULATION_NAME}_set_symbols (void)
725 /* Run through and invent symbols for all the
726 names and insert the defaults. */
729 if (!init[IMAGEBASEOFF].inited)
731 if (link_info.relocatable)
732 init[IMAGEBASEOFF].value = 0;
733 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
735 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base) ?
736 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
738 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
741 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
742 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
745 /* Don't do any symbol assignments if this is a relocatable link. */
746 if (link_info.relocatable)
749 /* Glue the assignments into the abs section. */
750 push_stat_ptr (&abs_output_section->children);
752 for (j = 0; init[j].ptr; j++)
754 long val = init[j].value;
755 lang_assignment_statement_type *rv;
756 rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
758 if (init[j].size == sizeof (short))
759 *(short *) init[j].ptr = val;
760 else if (init[j].size == sizeof (int))
761 *(int *) init[j].ptr = val;
762 else if (init[j].size == sizeof (long))
763 *(long *) init[j].ptr = val;
764 /* This might be a long long or other special type. */
765 else if (init[j].size == sizeof (bfd_vma))
766 *(bfd_vma *) init[j].ptr = val;
768 if (j == IMAGEBASEOFF)
769 image_base_statement = rv;
771 /* Restore the pointer. */
774 if (pe.FileAlignment >
777 einfo (_("%P: warning, file alignment > section alignment.\n"));
781 /* This is called after the linker script and the command line options
785 gld_${EMULATION_NAME}_after_parse (void)
787 /* The Windows libraries are designed for the linker to treat the
788 entry point as an undefined symbol. Otherwise, the .obj that
789 defines mainCRTStartup is brought in because it is the first
790 encountered in libc.lib and it has other symbols in it which will
791 be pulled in by the link process. To avoid this, we act as
792 though the user specified -u with the entry point symbol.
794 This function is called after the linker script and command line
795 options have been read, so at this point we know the right entry
796 point. This function is called before the input files are
797 opened, so registering the symbol as undefined will make a
800 if (! link_info.relocatable && entry_symbol.name != NULL)
801 ldlang_add_undef (entry_symbol.name);
804 /* pe-dll.c directly accesses pe_data_import_dll,
805 so it must be defined outside of #ifdef DLL_SUPPORT.
806 Note - this variable is deliberately not initialised.
807 This allows it to be treated as a common varaible, and only
808 exist in one incarnation in a multiple target enabled linker. */
809 char * pe_data_import_dll;
812 static struct bfd_link_hash_entry *pe_undef_found_sym;
815 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
820 sl = strlen (string);
821 if (h->type == bfd_link_hash_defined
822 && strncmp (h->root.string, string, sl) == 0
823 && h->root.string[sl] == '@')
825 pe_undef_found_sym = h;
832 pe_fixup_stdcalls (void)
834 static int gave_warning_message = 0;
835 struct bfd_link_hash_entry *undef, *sym;
837 if (pe_dll_extra_pe_debug)
838 printf ("%s\n", __FUNCTION__);
840 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
841 if (undef->type == bfd_link_hash_undefined)
843 char* at = strchr (undef->root.string, '@');
844 int lead_at = (*undef->root.string == '@');
845 /* For now, don't try to fixup fastcall symbols. */
849 /* The symbol is a stdcall symbol, so let's look for a
850 cdecl symbol with the same name and resolve to that. */
851 char *cname = xstrdup (undef->root.string /* + lead_at */);
852 at = strchr (cname, '@');
854 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
856 if (sym && sym->type == bfd_link_hash_defined)
858 undef->type = bfd_link_hash_defined;
859 undef->u.def.value = sym->u.def.value;
860 undef->u.def.section = sym->u.def.section;
862 if (pe_enable_stdcall_fixup == -1)
864 einfo (_("Warning: resolving %s by linking to %s\n"),
865 undef->root.string, cname);
866 if (! gave_warning_message)
868 gave_warning_message = 1;
869 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
870 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
877 /* The symbol is a cdecl symbol, so we look for stdcall
878 symbols - which means scanning the whole symbol table. */
879 pe_undef_found_sym = 0;
880 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
881 (char *) undef->root.string);
882 sym = pe_undef_found_sym;
885 undef->type = bfd_link_hash_defined;
886 undef->u.def.value = sym->u.def.value;
887 undef->u.def.section = sym->u.def.section;
889 if (pe_enable_stdcall_fixup == -1)
891 einfo (_("Warning: resolving %s by linking to %s\n"),
892 undef->root.string, sym->root.string);
893 if (! gave_warning_message)
895 gave_warning_message = 1;
896 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
897 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
906 make_import_fixup (arelent *rel, asection *s)
908 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
911 if (pe_dll_extra_pe_debug)
912 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
913 (unsigned long) rel->address, (long) rel->addend);
915 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
916 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
917 s->owner, s, rel->address);
919 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
925 pe_find_data_imports (void)
927 struct bfd_link_hash_entry *undef, *sym;
929 if (link_info.pei386_auto_import == 0)
932 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
934 if (undef->type == bfd_link_hash_undefined)
936 /* C++ symbols are *long*. */
939 if (pe_dll_extra_pe_debug)
940 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
942 sprintf (buf, "__imp_%s", undef->root.string);
944 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
946 if (sym && sym->type == bfd_link_hash_defined)
948 bfd *b = sym->u.def.section->owner;
952 if (link_info.pei386_auto_import == -1)
954 static bfd_boolean warned = FALSE;
956 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
957 undef->root.string, buf);
959 /* PR linker/4844. */
963 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
964 This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
968 if (!bfd_generic_link_read_symbols (b))
970 einfo (_("%B%F: could not read symbols: %E\n"), b);
974 symbols = bfd_get_outsymbols (b);
975 nsyms = bfd_get_symcount (b);
977 for (i = 0; i < nsyms; i++)
979 if (! CONST_STRNEQ (symbols[i]->name, U ("_head_")))
982 if (pe_dll_extra_pe_debug)
983 printf ("->%s\n", symbols[i]->name);
985 pe_data_import_dll = (char*) (symbols[i]->name +
986 sizeof (U ("_head_")) - 1);
990 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
993 /* Let's differentiate it somehow from defined. */
994 undef->type = bfd_link_hash_defweak;
995 /* We replace original name with __imp_ prefixed, this
996 1) may trash memory 2) leads to duplicate symbol generation.
997 Still, IMHO it's better than having name poluted. */
998 undef->root.string = sym->root.string;
999 undef->u.def.value = sym->u.def.value;
1000 undef->u.def.section = sym->u.def.section;
1007 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1009 if (pe_dll_extra_pe_debug)
1010 printf ("+%s\n", h->string);
1014 #endif /* DLL_SUPPORT */
1018 gld_${EMULATION_NAME}_after_open (void)
1021 if (pe_dll_extra_pe_debug)
1024 struct bfd_link_hash_entry *sym;
1026 printf ("%s()\n", __FUNCTION__);
1028 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1029 printf ("-%s\n", sym->root.string);
1030 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1032 for (a = link_info.input_bfds; a; a = a->link_next)
1033 printf ("*%s\n",a->filename);
1037 /* Pass the wacky PE command line options into the output bfd.
1038 FIXME: This should be done via a function, rather than by
1039 including an internal BFD header. */
1041 if (coff_data (link_info.output_bfd) == NULL
1042 || coff_data (link_info.output_bfd)->pe == 0)
1043 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1044 link_info.output_bfd);
1046 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1047 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1048 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1051 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1052 pe_fixup_stdcalls ();
1054 pe_process_import_defs (link_info.output_bfd, &link_info);
1056 pe_find_data_imports ();
1058 #if defined (TARGET_IS_i386pe) \
1059 || defined (TARGET_IS_armpe) \
1060 || defined (TARGET_IS_arm_epoc_pe) \
1061 || defined (TARGET_IS_arm_wince_pe)
1062 if (!link_info.relocatable)
1063 pe_dll_build_sections (link_info.output_bfd, &link_info);
1065 if (link_info.shared)
1066 pe_dll_build_sections (link_info.output_bfd, &link_info);
1068 pe_exe_build_sections (link_info.output_bfd, &link_info);
1070 #endif /* DLL_SUPPORT */
1072 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1073 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1075 /* The arm backend needs special fields in the output hash structure.
1076 These will only be created if the output format is an arm format,
1077 hence we do not support linking and changing output formats at the
1078 same time. Use a link followed by objcopy to change output formats. */
1079 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1083 /* Find a BFD that can hold the interworking stubs. */
1084 LANG_FOR_EACH_INPUT_STATEMENT (is)
1086 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1093 /* This next chunk of code tries to detect the case where you have
1094 two import libraries for the same DLL (specifically,
1095 symbolically linking libm.a and libc.a in cygwin to
1096 libcygwin.a). In those cases, it's possible for function
1097 thunks from the second implib to be used but without the
1098 head/tail objects, causing an improper import table. We detect
1099 those cases and rename the "other" import libraries to match
1100 the one the head/tail come from, so that the linker will sort
1101 things nicely and produce a valid import table. */
1103 LANG_FOR_EACH_INPUT_STATEMENT (is)
1105 if (is->the_bfd->my_archive)
1107 int idata2 = 0, reloc_count=0, is_imp = 0;
1110 /* See if this is an import library thunk. */
1111 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1113 if (strcmp (sec->name, ".idata\$2") == 0)
1115 if (CONST_STRNEQ (sec->name, ".idata\$"))
1117 reloc_count += sec->reloc_count;
1120 if (is_imp && !idata2 && reloc_count)
1122 /* It is, look for the reference to head and see if it's
1123 from our own library. */
1124 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1132 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1136 if (!bfd_generic_link_read_symbols (is->the_bfd))
1138 einfo (_("%B%F: could not read symbols: %E\n"),
1142 symbols = bfd_get_outsymbols (is->the_bfd);
1144 relocs = (arelent **) xmalloc ((size_t) relsize);
1145 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1150 einfo ("%X%P: unable to process relocs: %E\n");
1154 for (i = 0; i < nrelocs; i++)
1156 struct bfd_symbol *s;
1157 struct bfd_link_hash_entry * blhe;
1158 char *other_bfd_filename;
1161 s = (relocs[i]->sym_ptr_ptr)[0];
1163 if (s->flags & BSF_LOCAL)
1166 /* Thunk section with reloc to another bfd. */
1167 blhe = bfd_link_hash_lookup (link_info.hash,
1169 FALSE, FALSE, TRUE);
1172 || blhe->type != bfd_link_hash_defined)
1176 = blhe->u.def.section->owner->my_archive
1177 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1178 : bfd_get_filename (blhe->u.def.section->owner);
1180 if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
1181 other_bfd_filename) == 0)
1184 /* Rename this implib to match the other one. */
1185 n = xmalloc (strlen (other_bfd_filename) + 1);
1186 strcpy (n, other_bfd_filename);
1187 is->the_bfd->my_archive->filename = n;
1191 /* Note - we do not free the symbols,
1192 they are now cached in the BFD. */
1202 lang_input_statement_type *is2;
1203 lang_input_statement_type *is3;
1205 /* Careful - this is a shell script. Watch those dollar signs! */
1206 /* Microsoft import libraries have every member named the same,
1207 and not in the right order for us to link them correctly. We
1208 must detect these and rename the members so that they'll link
1209 correctly. There are three types of objects: the head, the
1210 thunks, and the sentinel(s). The head is easy; it's the one
1211 with idata2. We assume that the sentinels won't have relocs,
1212 and the thunks will. It's easier than checking the symbol
1213 table for external references. */
1214 LANG_FOR_EACH_INPUT_STATEMENT (is)
1216 if (is->the_bfd->my_archive)
1219 bfd *arch = is->the_bfd->my_archive;
1221 if (cur_arch != arch)
1227 is3 && is3->the_bfd->my_archive == arch;
1228 is3 = (lang_input_statement_type *) is3->next)
1230 /* A MS dynamic import library can also contain static
1231 members, so look for the first element with a .dll
1232 extension, and use that for the remainder of the
1234 pnt = strrchr (is3->the_bfd->filename, '.');
1235 if (pnt != NULL && strcmp (pnt, ".dll") == 0)
1243 /* OK, found one. Now look to see if the remaining
1244 (dynamic import) members use the same name. */
1246 is2 && is2->the_bfd->my_archive == arch;
1247 is2 = (lang_input_statement_type *) is2->next)
1249 /* Skip static members, ie anything with a .obj
1251 pnt = strrchr (is2->the_bfd->filename, '.');
1252 if (pnt != NULL && strcmp (pnt, ".obj") == 0)
1255 if (strcmp (is3->the_bfd->filename,
1256 is2->the_bfd->filename))
1265 /* This fragment might have come from an .obj file in a Microsoft
1266 import, and not an actual import record. If this is the case,
1267 then leave the filename alone. */
1268 pnt = strrchr (is->the_bfd->filename, '.');
1270 if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
1272 int idata2 = 0, reloc_count=0;
1274 char *new_name, seq;
1276 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1278 if (strcmp (sec->name, ".idata\$2") == 0)
1280 reloc_count += sec->reloc_count;
1283 if (idata2) /* .idata2 is the TOC */
1285 else if (reloc_count > 0) /* thunks */
1290 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1291 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1292 is->the_bfd->filename = new_name;
1294 new_name = xmalloc (strlen (is->filename) + 3);
1295 sprintf (new_name, "%s.%c", is->filename, seq);
1296 is->filename = new_name;
1303 /* The following chunk of code tries to identify jump stubs in
1304 import libraries which are dead code and eliminates them
1305 from the final link. For each exported symbol <sym>, there
1306 is a object file in the import library with a .text section
1307 and several .idata\$* sections. The .text section contains the
1308 symbol definition for <sym> which is a jump stub of the form
1309 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1310 for __imp_<sym> which is the address of the slot for <sym> in
1311 the import address table. When a symbol is imported explicitly
1312 using __declspec(dllimport) declaration, the compiler generates
1313 a reference to __imp_<sym> which directly resolves to the
1314 symbol in .idata\$5, in which case the jump stub code is not
1315 needed. The following code tries to identify jump stub sections
1316 in import libraries which are not referred to by anyone and
1317 marks them for exclusion from the final link. */
1318 LANG_FOR_EACH_INPUT_STATEMENT (is)
1320 if (is->the_bfd->my_archive)
1323 asection *sec, *stub_sec = NULL;
1325 /* See if this is an import library thunk. */
1326 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1328 if (strncmp (sec->name, ".idata\$", 7) == 0)
1330 /* The section containing the jmp stub has code
1332 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1336 if (is_imp && stub_sec)
1339 long nsyms, src_count;
1340 struct bfd_link_hash_entry * blhe;
1342 if (!bfd_generic_link_read_symbols (is->the_bfd))
1344 einfo (_("%B%F: could not read symbols: %E\n"),
1348 symbols = bfd_get_outsymbols (is->the_bfd);
1349 nsyms = bfd_get_symcount (is->the_bfd);
1351 for (src_count = 0; src_count < nsyms; src_count++)
1353 if (symbols[src_count]->section->id == stub_sec->id)
1355 /* This symbol belongs to the section containing
1357 blhe = bfd_link_hash_lookup (link_info.hash,
1358 symbols[src_count]->name,
1359 FALSE, FALSE, TRUE);
1360 /* If the symbol in the stub section has no other
1361 undefined references, exclude the stub section
1362 from the final link. */
1363 if (blhe && (blhe->type == bfd_link_hash_defined)
1364 && (blhe->u.undef.next == NULL))
1365 stub_sec->flags |= SEC_EXCLUDE;
1375 gld_${EMULATION_NAME}_before_allocation (void)
1377 #ifdef TARGET_IS_ppcpe
1378 /* Here we rummage through the found bfds to collect toc information. */
1380 LANG_FOR_EACH_INPUT_STATEMENT (is)
1382 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1384 /* xgettext:c-format */
1385 einfo (_("Errors encountered processing file %s\n"), is->filename);
1390 /* We have seen it all. Allocate it, and carry on. */
1391 ppc_allocate_toc_section (&link_info);
1392 #endif /* TARGET_IS_ppcpe */
1394 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1395 /* FIXME: we should be able to set the size of the interworking stub
1398 Here we rummage through the found bfds to collect glue
1399 information. FIXME: should this be based on a command line
1400 option? krk@cygnus.com. */
1402 LANG_FOR_EACH_INPUT_STATEMENT (is)
1404 if (! bfd_arm_process_before_allocation
1405 (is->the_bfd, & link_info, support_old_code))
1407 /* xgettext:c-format */
1408 einfo (_("Errors encountered processing file %s for interworking\n"),
1414 /* We have seen it all. Allocate it, and carry on. */
1415 bfd_arm_allocate_interworking_sections (& link_info);
1416 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1418 before_allocation_default ();
1422 /* This is called when an input file isn't recognized as a BFD. We
1423 check here for .DEF files and pull them in automatically. */
1426 saw_option (char *option)
1430 for (i = 0; init[i].ptr; i++)
1431 if (strcmp (init[i].symbol, option) == 0)
1432 return init[i].inited;
1435 #endif /* DLL_SUPPORT */
1438 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1441 const char *ext = entry->filename + strlen (entry->filename) - 4;
1443 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1445 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1449 int i, buflen=0, len;
1452 for (i = 0; i < pe_def_file->num_exports; i++)
1454 len = strlen (pe_def_file->exports[i].internal_name);
1455 if (buflen < len + 2)
1459 buf = (char *) xmalloc (buflen);
1461 for (i = 0; i < pe_def_file->num_exports; i++)
1463 struct bfd_link_hash_entry *h;
1465 sprintf (buf, "%s%s", U (""), pe_def_file->exports[i].internal_name);
1467 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1468 if (h == (struct bfd_link_hash_entry *) NULL)
1469 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1470 if (h->type == bfd_link_hash_new)
1472 h->type = bfd_link_hash_undefined;
1473 h->u.undef.abfd = NULL;
1474 bfd_link_add_undef (link_info.hash, h);
1479 /* def_file_print (stdout, pe_def_file); */
1480 if (pe_def_file->is_dll == 1)
1481 link_info.shared = 1;
1483 if (pe_def_file->base_address != (bfd_vma)(-1))
1486 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1487 = init[IMAGEBASEOFF].value
1488 = pe_def_file->base_address;
1489 init[IMAGEBASEOFF].inited = 1;
1490 if (image_base_statement)
1491 image_base_statement->exp = exp_assop ('=', "__image_base__",
1492 exp_intop (pe.ImageBase));
1495 if (pe_def_file->stack_reserve != -1
1496 && ! saw_option ("__size_of_stack_reserve__"))
1498 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1499 if (pe_def_file->stack_commit != -1)
1500 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1502 if (pe_def_file->heap_reserve != -1
1503 && ! saw_option ("__size_of_heap_reserve__"))
1505 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1506 if (pe_def_file->heap_commit != -1)
1507 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1517 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1520 #ifdef TARGET_IS_i386pe
1521 pe_dll_id_target ("pei-i386");
1523 #ifdef TARGET_IS_shpe
1524 pe_dll_id_target ("pei-shl");
1526 #ifdef TARGET_IS_mipspe
1527 pe_dll_id_target ("pei-mips");
1529 #ifdef TARGET_IS_armpe
1530 pe_dll_id_target ("pei-arm-little");
1532 #ifdef TARGET_IS_arm_epoc_pe
1533 pe_dll_id_target ("epoc-pei-arm-little");
1535 #ifdef TARGET_IS_arm_wince_pe
1536 pe_dll_id_target ("pei-arm-wince-little");
1538 if (pe_bfd_is_dll (entry->the_bfd))
1539 return pe_implied_import_dll (entry->filename);
1545 gld_${EMULATION_NAME}_finish (void)
1547 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1548 struct bfd_link_hash_entry * h;
1550 if (thumb_entry_symbol != NULL)
1552 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1553 FALSE, FALSE, TRUE);
1555 if (h != (struct bfd_link_hash_entry *) NULL
1556 && (h->type == bfd_link_hash_defined
1557 || h->type == bfd_link_hash_defweak)
1558 && h->u.def.section->output_section != NULL)
1560 static char buffer[32];
1563 /* Special procesing is required for a Thumb entry symbol. The
1564 bottom bit of its address must be set. */
1565 val = (h->u.def.value
1566 + bfd_get_section_vma (link_info.output_bfd,
1567 h->u.def.section->output_section)
1568 + h->u.def.section->output_offset);
1572 /* Now convert this value into a string and store it in entry_symbol
1573 where the lang_finish() function will pick it up. */
1577 sprintf_vma (buffer + 2, val);
1579 if (entry_symbol.name != NULL && entry_from_cmdline)
1580 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1581 thumb_entry_symbol, entry_symbol.name);
1582 entry_symbol.name = buffer;
1585 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
1587 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
1592 if (link_info.shared
1593 #if !defined(TARGET_IS_shpe) && !defined(TARGET_IS_mipspe)
1594 || (!link_info.relocatable && pe_def_file->num_exports != 0)
1598 pe_dll_fill_sections (link_info.output_bfd, &link_info);
1599 if (pe_implib_filename)
1600 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info);
1602 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1603 /* ARM doesn't need relocs. */
1606 pe_exe_fill_sections (link_info.output_bfd, &link_info);
1610 if (pe_out_def_filename)
1611 pe_dll_generate_def_file (pe_out_def_filename);
1612 #endif /* DLL_SUPPORT */
1614 /* I don't know where .idata gets set as code, but it shouldn't be. */
1616 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1620 asec->flags &= ~SEC_CODE;
1621 asec->flags |= SEC_DATA;
1627 /* Place an orphan section.
1629 We use this to put sections in a reasonable place in the file, and
1630 to ensure that they are aligned as required.
1632 We handle grouped sections here as well. A section named .foo\$nn
1633 goes into the output section .foo. All grouped sections are sorted
1636 Grouped sections for the default sections are handled by the
1637 default linker script using wildcards, and are sorted by
1640 static lang_output_section_statement_type *
1641 gld_${EMULATION_NAME}_place_orphan (asection *s,
1642 const char *secname,
1645 const char *orig_secname = secname;
1646 char *dollar = NULL;
1647 lang_output_section_statement_type *os;
1648 lang_statement_list_type add_child;
1650 /* Look through the script to see where to place this section. */
1651 if (!link_info.relocatable
1652 && (dollar = strchr (secname, '\$')) != NULL)
1654 size_t len = dollar - secname;
1655 char *newname = xmalloc (len + 1);
1656 memcpy (newname, secname, len);
1657 newname[len] = '\0';
1661 lang_list_init (&add_child);
1664 && (os = lang_output_section_find (secname)) != NULL
1665 && os->bfd_section != NULL
1666 && (os->bfd_section->flags == 0
1667 || ((s->flags ^ os->bfd_section->flags)
1668 & (SEC_LOAD | SEC_ALLOC)) == 0))
1670 /* We already have an output section statement with this
1671 name, and its bfd section has compatible flags.
1672 If the section already exists but does not have any flags set,
1673 then it has been created by the linker, probably as a result of
1674 a --section-start command line switch. */
1675 lang_add_section (&add_child, s, os);
1679 static struct orphan_save hold[] =
1682 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1685 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1688 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1694 enum orphan_save_index
1701 static int orphan_init_done = 0;
1702 struct orphan_save *place;
1703 lang_output_section_statement_type *after;
1704 etree_type *address;
1706 if (!orphan_init_done)
1708 struct orphan_save *ho;
1709 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1710 if (ho->name != NULL)
1712 ho->os = lang_output_section_find (ho->name);
1713 if (ho->os != NULL && ho->os->flags == 0)
1714 ho->os->flags = ho->flags;
1716 orphan_init_done = 1;
1719 /* Try to put the new output section in a reasonable place based
1720 on the section name and section flags. */
1723 if ((s->flags & SEC_ALLOC) == 0)
1725 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1726 place = &hold[orphan_bss];
1727 else if ((s->flags & SEC_READONLY) == 0)
1728 place = &hold[orphan_data];
1729 else if ((s->flags & SEC_CODE) == 0)
1730 place = &hold[orphan_rodata];
1732 place = &hold[orphan_text];
1737 if (place->os == NULL)
1738 place->os = lang_output_section_find (place->name);
1741 after = lang_output_section_find_by_flags (s, &place->os, NULL);
1743 /* *ABS* is always the first output section statement. */
1744 after = (&lang_output_section_statement.head
1745 ->output_section_statement);
1748 /* All sections in an executable must be aligned to a page boundary. */
1749 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
1750 os = lang_insert_orphan (s, secname, constraint, after, place, address,
1755 lang_statement_union_type **pl = &os->children.head;
1759 bfd_boolean found_dollar;
1761 /* The section name has a '\$'. Sort it with the other '\$'
1763 found_dollar = FALSE;
1764 for ( ; *pl != NULL; pl = &(*pl)->header.next)
1766 lang_input_section_type *ls;
1769 if ((*pl)->header.type != lang_input_section_enum)
1772 ls = &(*pl)->input_section;
1774 lname = bfd_get_section_name (ls->section->owner, ls->section);
1775 if (strchr (lname, '\$') == NULL)
1782 found_dollar = TRUE;
1783 if (strcmp (orig_secname, lname) < 0)
1789 if (add_child.head != NULL)
1791 add_child.head->header.next = *pl;
1792 *pl = add_child.head;
1800 gld_${EMULATION_NAME}_open_dynamic_archive
1801 (const char *arch ATTRIBUTE_UNUSED, search_dirs_type *search,
1802 lang_input_statement_type *entry)
1806 const char * format;
1807 bfd_boolean use_prefix;
1811 /* Preferred explicit import library for dll's. */
1812 { "lib%s.dll.a", FALSE },
1813 /* Alternate explicit import library for dll's. */
1814 { "%s.dll.a", FALSE },
1815 /* "libfoo.a" could be either an import lib or a static lib.
1816 For backwards compatibility, libfoo.a needs to precede
1817 libfoo.dll and foo.dll in the search. */
1818 { "lib%s.a", FALSE },
1819 /* The 'native' spelling of an import lib name is "foo.lib". */
1820 { "%s.lib", FALSE },
1822 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
1823 { "%s%s.dll", TRUE },
1825 /* Try "libfoo.dll" (default preferred dll name). */
1826 { "lib%s.dll", FALSE },
1827 /* Finally try 'native' dll name "foo.dll". */
1828 { "%s.dll", FALSE },
1829 /* Note: If adding more formats to this table, make sure to check to
1830 see if their length is longer than libname_fmt[0].format, and if
1831 so, update the call to xmalloc() below. */
1834 static unsigned int format_max_len = 0;
1835 const char * filename;
1841 if (! entry->is_archive)
1844 filename = entry->filename;
1846 if (format_max_len == 0)
1847 /* We need to allow space in the memory that we are going to allocate
1848 for the characters in the format string. Since the format array is
1849 static we only need to calculate this information once. In theory
1850 this value could also be computed statically, but this introduces
1851 the possibility for a discrepancy and hence a possible memory
1852 corruption. The lengths we compute here will be too long because
1853 they will include any formating characters (%s) in the strings, but
1854 this will not matter. */
1855 for (i = 0; libname_fmt[i].format; i++)
1856 if (format_max_len < strlen (libname_fmt[i].format))
1857 format_max_len = strlen (libname_fmt[i].format);
1859 full_string = xmalloc (strlen (search->name)
1863 + (pe_dll_search_prefix
1864 ? strlen (pe_dll_search_prefix) : 0)
1866 /* Allow for the terminating NUL and for the path
1867 separator character that is inserted between
1868 search->name and the start of the format string. */
1871 sprintf (full_string, "%s/", search->name);
1872 base_string = full_string + strlen (full_string);
1874 for (i = 0; libname_fmt[i].format; i++)
1877 if (libname_fmt[i].use_prefix)
1879 if (!pe_dll_search_prefix)
1881 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
1885 sprintf (base_string, libname_fmt[i].format, filename);
1887 if (ldfile_try_open_bfd (full_string, entry))
1891 if (!libname_fmt[i].format)
1897 entry->filename = full_string;
1903 gld_${EMULATION_NAME}_find_potential_libraries
1904 (char *name, lang_input_statement_type *entry)
1906 return ldfile_open_file_search (name, entry, "", ".lib");
1910 gld_${EMULATION_NAME}_get_script (int *isfile)
1912 # Scripts compiled in.
1913 # sed commands to quote an ld script as a C string.
1914 sc="-f stringify.sed"
1920 if (link_info.relocatable && config.build_constructors)
1923 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1924 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1925 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1926 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1927 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1928 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1929 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1930 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
1931 echo ' ; else if (link_info.pei386_auto_import == 1) return' >> e${EMULATION_NAME}.c
1932 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
1934 echo ' ; else return' >> e${EMULATION_NAME}.c
1935 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1936 echo '; }' >> e${EMULATION_NAME}.c
1941 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1943 gld_${EMULATION_NAME}_before_parse,
1946 gld_${EMULATION_NAME}_after_parse,
1947 gld_${EMULATION_NAME}_after_open,
1948 after_allocation_default,
1949 set_output_arch_default,
1950 ldemul_default_target,
1951 gld_${EMULATION_NAME}_before_allocation,
1952 gld_${EMULATION_NAME}_get_script,
1953 "${EMULATION_NAME}",
1955 gld_${EMULATION_NAME}_finish,
1956 NULL, /* Create output section statements. */
1957 gld_${EMULATION_NAME}_open_dynamic_archive,
1958 gld_${EMULATION_NAME}_place_orphan,
1959 gld_${EMULATION_NAME}_set_symbols,
1960 NULL, /* parse_args */
1961 gld${EMULATION_NAME}_add_options,
1962 gld${EMULATION_NAME}_handle_option,
1963 gld_${EMULATION_NAME}_unrecognized_file,
1964 gld_${EMULATION_NAME}_list_options,
1965 gld_${EMULATION_NAME}_recognized_file,
1966 gld_${EMULATION_NAME}_find_potential_libraries,
1967 NULL /* new_vers_pattern. */