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 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_${EMULATION_NAME}_set_symbols (void)
725 /* Run through and invent symbols for all the
726 names and insert the defaults. */
728 lang_statement_list_type *save;
730 if (!init[IMAGEBASEOFF].inited)
732 if (link_info.relocatable)
733 init[IMAGEBASEOFF].value = 0;
734 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
736 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base) ?
737 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
739 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
742 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
743 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
746 /* Don't do any symbol assignments if this is a relocatable link. */
747 if (link_info.relocatable)
750 /* Glue the assignments into the abs section. */
753 stat_ptr = &(abs_output_section->children);
755 for (j = 0; init[j].ptr; j++)
757 long val = init[j].value;
758 lang_assignment_statement_type *rv;
759 rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
761 if (init[j].size == sizeof (short))
762 *(short *) init[j].ptr = val;
763 else if (init[j].size == sizeof (int))
764 *(int *) init[j].ptr = val;
765 else if (init[j].size == sizeof (long))
766 *(long *) init[j].ptr = val;
767 /* This might be a long long or other special type. */
768 else if (init[j].size == sizeof (bfd_vma))
769 *(bfd_vma *) init[j].ptr = val;
771 if (j == IMAGEBASEOFF)
772 image_base_statement = rv;
774 /* Restore the pointer. */
777 if (pe.FileAlignment >
780 einfo (_("%P: warning, file alignment > section alignment.\n"));
784 /* This is called after the linker script and the command line options
788 gld_${EMULATION_NAME}_after_parse (void)
790 /* The Windows libraries are designed for the linker to treat the
791 entry point as an undefined symbol. Otherwise, the .obj that
792 defines mainCRTStartup is brought in because it is the first
793 encountered in libc.lib and it has other symbols in it which will
794 be pulled in by the link process. To avoid this, we act as
795 though the user specified -u with the entry point symbol.
797 This function is called after the linker script and command line
798 options have been read, so at this point we know the right entry
799 point. This function is called before the input files are
800 opened, so registering the symbol as undefined will make a
803 if (! link_info.relocatable && entry_symbol.name != NULL)
804 ldlang_add_undef (entry_symbol.name);
807 /* pe-dll.c directly accesses pe_data_import_dll,
808 so it must be defined outside of #ifdef DLL_SUPPORT.
809 Note - this variable is deliberately not initialised.
810 This allows it to be treated as a common varaible, and only
811 exist in one incarnation in a multiple target enabled linker. */
812 char * pe_data_import_dll;
815 static struct bfd_link_hash_entry *pe_undef_found_sym;
818 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
823 sl = strlen (string);
824 if (h->type == bfd_link_hash_defined
825 && strncmp (h->root.string, string, sl) == 0
826 && h->root.string[sl] == '@')
828 pe_undef_found_sym = h;
835 pe_fixup_stdcalls (void)
837 static int gave_warning_message = 0;
838 struct bfd_link_hash_entry *undef, *sym;
840 if (pe_dll_extra_pe_debug)
841 printf ("%s\n", __FUNCTION__);
843 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
844 if (undef->type == bfd_link_hash_undefined)
846 char* at = strchr (undef->root.string, '@');
847 int lead_at = (*undef->root.string == '@');
848 /* For now, don't try to fixup fastcall symbols. */
852 /* The symbol is a stdcall symbol, so let's look for a
853 cdecl symbol with the same name and resolve to that. */
854 char *cname = xstrdup (undef->root.string /* + lead_at */);
855 at = strchr (cname, '@');
857 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
859 if (sym && sym->type == bfd_link_hash_defined)
861 undef->type = bfd_link_hash_defined;
862 undef->u.def.value = sym->u.def.value;
863 undef->u.def.section = sym->u.def.section;
865 if (pe_enable_stdcall_fixup == -1)
867 einfo (_("Warning: resolving %s by linking to %s\n"),
868 undef->root.string, cname);
869 if (! gave_warning_message)
871 gave_warning_message = 1;
872 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
873 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
880 /* The symbol is a cdecl symbol, so we look for stdcall
881 symbols - which means scanning the whole symbol table. */
882 pe_undef_found_sym = 0;
883 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
884 (char *) undef->root.string);
885 sym = pe_undef_found_sym;
888 undef->type = bfd_link_hash_defined;
889 undef->u.def.value = sym->u.def.value;
890 undef->u.def.section = sym->u.def.section;
892 if (pe_enable_stdcall_fixup == -1)
894 einfo (_("Warning: resolving %s by linking to %s\n"),
895 undef->root.string, sym->root.string);
896 if (! gave_warning_message)
898 gave_warning_message = 1;
899 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
900 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
909 make_import_fixup (arelent *rel, asection *s)
911 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
914 if (pe_dll_extra_pe_debug)
915 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
916 (unsigned long) rel->address, (long) rel->addend);
918 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
919 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
920 s->owner, s, rel->address);
922 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
928 pe_find_data_imports (void)
930 struct bfd_link_hash_entry *undef, *sym;
932 if (link_info.pei386_auto_import == 0)
935 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
937 if (undef->type == bfd_link_hash_undefined)
939 /* C++ symbols are *long*. */
942 if (pe_dll_extra_pe_debug)
943 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
945 sprintf (buf, "__imp_%s", undef->root.string);
947 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
949 if (sym && sym->type == bfd_link_hash_defined)
951 bfd *b = sym->u.def.section->owner;
955 if (link_info.pei386_auto_import == -1)
957 static bfd_boolean warned = FALSE;
959 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
960 undef->root.string, buf);
962 /* PR linker/4844. */
966 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
967 This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
971 if (!bfd_generic_link_read_symbols (b))
973 einfo (_("%B%F: could not read symbols: %E\n"), b);
977 symbols = bfd_get_outsymbols (b);
978 nsyms = bfd_get_symcount (b);
980 for (i = 0; i < nsyms; i++)
982 if (! CONST_STRNEQ (symbols[i]->name, U ("_head_")))
985 if (pe_dll_extra_pe_debug)
986 printf ("->%s\n", symbols[i]->name);
988 pe_data_import_dll = (char*) (symbols[i]->name +
989 sizeof (U ("_head_")) - 1);
993 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
996 /* Let's differentiate it somehow from defined. */
997 undef->type = bfd_link_hash_defweak;
998 /* We replace original name with __imp_ prefixed, this
999 1) may trash memory 2) leads to duplicate symbol generation.
1000 Still, IMHO it's better than having name poluted. */
1001 undef->root.string = sym->root.string;
1002 undef->u.def.value = sym->u.def.value;
1003 undef->u.def.section = sym->u.def.section;
1010 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1012 if (pe_dll_extra_pe_debug)
1013 printf ("+%s\n", h->string);
1017 #endif /* DLL_SUPPORT */
1021 gld_${EMULATION_NAME}_after_open (void)
1024 if (pe_dll_extra_pe_debug)
1027 struct bfd_link_hash_entry *sym;
1029 printf ("%s()\n", __FUNCTION__);
1031 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1032 printf ("-%s\n", sym->root.string);
1033 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1035 for (a = link_info.input_bfds; a; a = a->link_next)
1036 printf ("*%s\n",a->filename);
1040 /* Pass the wacky PE command line options into the output bfd.
1041 FIXME: This should be done via a function, rather than by
1042 including an internal BFD header. */
1044 if (coff_data (link_info.output_bfd) == NULL
1045 || coff_data (link_info.output_bfd)->pe == 0)
1046 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1047 link_info.output_bfd);
1049 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1050 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1051 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1054 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1055 pe_fixup_stdcalls ();
1057 pe_process_import_defs (link_info.output_bfd, &link_info);
1059 pe_find_data_imports ();
1061 #if defined (TARGET_IS_i386pe) \
1062 || defined (TARGET_IS_armpe) \
1063 || defined (TARGET_IS_arm_epoc_pe) \
1064 || defined (TARGET_IS_arm_wince_pe)
1065 if (!link_info.relocatable)
1066 pe_dll_build_sections (link_info.output_bfd, &link_info);
1068 pe_exe_build_sections (link_info.output_bfd, &link_info);
1070 if (link_info.shared)
1071 pe_dll_build_sections (link_info.output_bfd, &link_info);
1073 #endif /* DLL_SUPPORT */
1075 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1076 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1078 /* The arm backend needs special fields in the output hash structure.
1079 These will only be created if the output format is an arm format,
1080 hence we do not support linking and changing output formats at the
1081 same time. Use a link followed by objcopy to change output formats. */
1082 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1086 /* Find a BFD that can hold the interworking stubs. */
1087 LANG_FOR_EACH_INPUT_STATEMENT (is)
1089 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1096 /* This next chunk of code tries to detect the case where you have
1097 two import libraries for the same DLL (specifically,
1098 symbolically linking libm.a and libc.a in cygwin to
1099 libcygwin.a). In those cases, it's possible for function
1100 thunks from the second implib to be used but without the
1101 head/tail objects, causing an improper import table. We detect
1102 those cases and rename the "other" import libraries to match
1103 the one the head/tail come from, so that the linker will sort
1104 things nicely and produce a valid import table. */
1106 LANG_FOR_EACH_INPUT_STATEMENT (is)
1108 if (is->the_bfd->my_archive)
1110 int idata2 = 0, reloc_count=0, is_imp = 0;
1113 /* See if this is an import library thunk. */
1114 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1116 if (strcmp (sec->name, ".idata\$2") == 0)
1118 if (CONST_STRNEQ (sec->name, ".idata\$"))
1120 reloc_count += sec->reloc_count;
1123 if (is_imp && !idata2 && reloc_count)
1125 /* It is, look for the reference to head and see if it's
1126 from our own library. */
1127 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1135 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1139 if (!bfd_generic_link_read_symbols (is->the_bfd))
1141 einfo (_("%B%F: could not read symbols: %E\n"),
1145 symbols = bfd_get_outsymbols (is->the_bfd);
1147 relocs = (arelent **) xmalloc ((size_t) relsize);
1148 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1153 einfo ("%X%P: unable to process relocs: %E\n");
1157 for (i = 0; i < nrelocs; i++)
1159 struct bfd_symbol *s;
1160 struct bfd_link_hash_entry * blhe;
1161 char *other_bfd_filename;
1164 s = (relocs[i]->sym_ptr_ptr)[0];
1166 if (s->flags & BSF_LOCAL)
1169 /* Thunk section with reloc to another bfd. */
1170 blhe = bfd_link_hash_lookup (link_info.hash,
1172 FALSE, FALSE, TRUE);
1175 || blhe->type != bfd_link_hash_defined)
1179 = blhe->u.def.section->owner->my_archive
1180 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1181 : bfd_get_filename (blhe->u.def.section->owner);
1183 if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
1184 other_bfd_filename) == 0)
1187 /* Rename this implib to match the other one. */
1188 n = xmalloc (strlen (other_bfd_filename) + 1);
1189 strcpy (n, other_bfd_filename);
1190 is->the_bfd->my_archive->filename = n;
1194 /* Note - we do not free the symbols,
1195 they are now cached in the BFD. */
1205 lang_input_statement_type *is2;
1206 lang_input_statement_type *is3;
1208 /* Careful - this is a shell script. Watch those dollar signs! */
1209 /* Microsoft import libraries have every member named the same,
1210 and not in the right order for us to link them correctly. We
1211 must detect these and rename the members so that they'll link
1212 correctly. There are three types of objects: the head, the
1213 thunks, and the sentinel(s). The head is easy; it's the one
1214 with idata2. We assume that the sentinels won't have relocs,
1215 and the thunks will. It's easier than checking the symbol
1216 table for external references. */
1217 LANG_FOR_EACH_INPUT_STATEMENT (is)
1219 if (is->the_bfd->my_archive)
1222 bfd *arch = is->the_bfd->my_archive;
1224 if (cur_arch != arch)
1230 is3 && is3->the_bfd->my_archive == arch;
1231 is3 = (lang_input_statement_type *) is3->next)
1233 /* A MS dynamic import library can also contain static
1234 members, so look for the first element with a .dll
1235 extension, and use that for the remainder of the
1237 pnt = strrchr (is3->the_bfd->filename, '.');
1238 if (pnt != NULL && strcmp (pnt, ".dll") == 0)
1246 /* OK, found one. Now look to see if the remaining
1247 (dynamic import) members use the same name. */
1249 is2 && is2->the_bfd->my_archive == arch;
1250 is2 = (lang_input_statement_type *) is2->next)
1252 /* Skip static members, ie anything with a .obj
1254 pnt = strrchr (is2->the_bfd->filename, '.');
1255 if (pnt != NULL && strcmp (pnt, ".obj") == 0)
1258 if (strcmp (is3->the_bfd->filename,
1259 is2->the_bfd->filename))
1268 /* This fragment might have come from an .obj file in a Microsoft
1269 import, and not an actual import record. If this is the case,
1270 then leave the filename alone. */
1271 pnt = strrchr (is->the_bfd->filename, '.');
1273 if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
1275 int idata2 = 0, reloc_count=0;
1277 char *new_name, seq;
1279 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1281 if (strcmp (sec->name, ".idata\$2") == 0)
1283 reloc_count += sec->reloc_count;
1286 if (idata2) /* .idata2 is the TOC */
1288 else if (reloc_count > 0) /* thunks */
1293 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1294 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1295 is->the_bfd->filename = new_name;
1297 new_name = xmalloc (strlen (is->filename) + 3);
1298 sprintf (new_name, "%s.%c", is->filename, seq);
1299 is->filename = new_name;
1306 /* The following chunk of code tries to identify jump stubs in
1307 import libraries which are dead code and eliminates them
1308 from the final link. For each exported symbol <sym>, there
1309 is a object file in the import library with a .text section
1310 and several .idata\$* sections. The .text section contains the
1311 symbol definition for <sym> which is a jump stub of the form
1312 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1313 for __imp_<sym> which is the address of the slot for <sym> in
1314 the import address table. When a symbol is imported explicitly
1315 using __declspec(dllimport) declaration, the compiler generates
1316 a reference to __imp_<sym> which directly resolves to the
1317 symbol in .idata\$5, in which case the jump stub code is not
1318 needed. The following code tries to identify jump stub sections
1319 in import libraries which are not referred to by anyone and
1320 marks them for exclusion from the final link. */
1321 LANG_FOR_EACH_INPUT_STATEMENT (is)
1323 if (is->the_bfd->my_archive)
1326 asection *sec, *stub_sec = NULL;
1328 /* See if this is an import library thunk. */
1329 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1331 if (strncmp (sec->name, ".idata\$", 7) == 0)
1333 /* The section containing the jmp stub has code
1335 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1339 if (is_imp && stub_sec)
1342 long nsyms, src_count;
1343 struct bfd_link_hash_entry * blhe;
1345 if (!bfd_generic_link_read_symbols (is->the_bfd))
1347 einfo (_("%B%F: could not read symbols: %E\n"),
1351 symbols = bfd_get_outsymbols (is->the_bfd);
1352 nsyms = bfd_get_symcount (is->the_bfd);
1354 for (src_count = 0; src_count < nsyms; src_count++)
1356 if (symbols[src_count]->section->id == stub_sec->id)
1358 /* This symbol belongs to the section containing
1360 blhe = bfd_link_hash_lookup (link_info.hash,
1361 symbols[src_count]->name,
1362 FALSE, FALSE, TRUE);
1363 /* If the symbol in the stub section has no other
1364 undefined references, exclude the stub section
1365 from the final link. */
1366 if (blhe && (blhe->type == bfd_link_hash_defined)
1367 && (blhe->u.undef.next == NULL))
1368 stub_sec->flags |= SEC_EXCLUDE;
1378 gld_${EMULATION_NAME}_before_allocation (void)
1380 #ifdef TARGET_IS_ppcpe
1381 /* Here we rummage through the found bfds to collect toc information. */
1383 LANG_FOR_EACH_INPUT_STATEMENT (is)
1385 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1387 /* xgettext:c-format */
1388 einfo (_("Errors encountered processing file %s\n"), is->filename);
1393 /* We have seen it all. Allocate it, and carry on. */
1394 ppc_allocate_toc_section (&link_info);
1395 #endif /* TARGET_IS_ppcpe */
1397 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1398 /* FIXME: we should be able to set the size of the interworking stub
1401 Here we rummage through the found bfds to collect glue
1402 information. FIXME: should this be based on a command line
1403 option? krk@cygnus.com. */
1405 LANG_FOR_EACH_INPUT_STATEMENT (is)
1407 if (! bfd_arm_process_before_allocation
1408 (is->the_bfd, & link_info, support_old_code))
1410 /* xgettext:c-format */
1411 einfo (_("Errors encountered processing file %s for interworking\n"),
1417 /* We have seen it all. Allocate it, and carry on. */
1418 bfd_arm_allocate_interworking_sections (& link_info);
1419 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1421 before_allocation_default ();
1425 /* This is called when an input file isn't recognized as a BFD. We
1426 check here for .DEF files and pull them in automatically. */
1429 saw_option (char *option)
1433 for (i = 0; init[i].ptr; i++)
1434 if (strcmp (init[i].symbol, option) == 0)
1435 return init[i].inited;
1438 #endif /* DLL_SUPPORT */
1441 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1444 const char *ext = entry->filename + strlen (entry->filename) - 4;
1446 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1448 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1452 int i, buflen=0, len;
1455 for (i = 0; i < pe_def_file->num_exports; i++)
1457 len = strlen (pe_def_file->exports[i].internal_name);
1458 if (buflen < len + 2)
1462 buf = (char *) xmalloc (buflen);
1464 for (i = 0; i < pe_def_file->num_exports; i++)
1466 struct bfd_link_hash_entry *h;
1468 sprintf (buf, "%s%s", U (""), pe_def_file->exports[i].internal_name);
1470 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1471 if (h == (struct bfd_link_hash_entry *) NULL)
1472 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1473 if (h->type == bfd_link_hash_new)
1475 h->type = bfd_link_hash_undefined;
1476 h->u.undef.abfd = NULL;
1477 bfd_link_add_undef (link_info.hash, h);
1482 /* def_file_print (stdout, pe_def_file); */
1483 if (pe_def_file->is_dll == 1)
1484 link_info.shared = 1;
1486 if (pe_def_file->base_address != (bfd_vma)(-1))
1489 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1490 = init[IMAGEBASEOFF].value
1491 = pe_def_file->base_address;
1492 init[IMAGEBASEOFF].inited = 1;
1493 if (image_base_statement)
1494 image_base_statement->exp = exp_assop ('=', "__image_base__",
1495 exp_intop (pe.ImageBase));
1498 if (pe_def_file->stack_reserve != -1
1499 && ! saw_option ("__size_of_stack_reserve__"))
1501 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1502 if (pe_def_file->stack_commit != -1)
1503 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1505 if (pe_def_file->heap_reserve != -1
1506 && ! saw_option ("__size_of_heap_reserve__"))
1508 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1509 if (pe_def_file->heap_commit != -1)
1510 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1520 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1523 #ifdef TARGET_IS_i386pe
1524 pe_dll_id_target ("pei-i386");
1526 #ifdef TARGET_IS_shpe
1527 pe_dll_id_target ("pei-shl");
1529 #ifdef TARGET_IS_mipspe
1530 pe_dll_id_target ("pei-mips");
1532 #ifdef TARGET_IS_armpe
1533 pe_dll_id_target ("pei-arm-little");
1535 #ifdef TARGET_IS_arm_epoc_pe
1536 pe_dll_id_target ("epoc-pei-arm-little");
1538 #ifdef TARGET_IS_arm_wince_pe
1539 pe_dll_id_target ("pei-arm-wince-little");
1541 if (pe_bfd_is_dll (entry->the_bfd))
1542 return pe_implied_import_dll (entry->filename);
1548 gld_${EMULATION_NAME}_finish (void)
1550 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1551 struct bfd_link_hash_entry * h;
1553 if (thumb_entry_symbol != NULL)
1555 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1556 FALSE, FALSE, TRUE);
1558 if (h != (struct bfd_link_hash_entry *) NULL
1559 && (h->type == bfd_link_hash_defined
1560 || h->type == bfd_link_hash_defweak)
1561 && h->u.def.section->output_section != NULL)
1563 static char buffer[32];
1566 /* Special procesing is required for a Thumb entry symbol. The
1567 bottom bit of its address must be set. */
1568 val = (h->u.def.value
1569 + bfd_get_section_vma (link_info.output_bfd,
1570 h->u.def.section->output_section)
1571 + h->u.def.section->output_offset);
1575 /* Now convert this value into a string and store it in entry_symbol
1576 where the lang_finish() function will pick it up. */
1580 sprintf_vma (buffer + 2, val);
1582 if (entry_symbol.name != NULL && entry_from_cmdline)
1583 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1584 thumb_entry_symbol, entry_symbol.name);
1585 entry_symbol.name = buffer;
1588 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
1590 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
1595 if (link_info.shared
1596 #if !defined(TARGET_IS_shpe) && !defined(TARGET_IS_mipspe)
1597 || (!link_info.relocatable && pe_def_file->num_exports != 0)
1601 pe_dll_fill_sections (link_info.output_bfd, &link_info);
1602 if (pe_implib_filename)
1603 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info);
1605 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1606 /* ARM doesn't need relocs. */
1609 pe_exe_fill_sections (link_info.output_bfd, &link_info);
1613 if (pe_out_def_filename)
1614 pe_dll_generate_def_file (pe_out_def_filename);
1615 #endif /* DLL_SUPPORT */
1617 /* I don't know where .idata gets set as code, but it shouldn't be. */
1619 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1623 asec->flags &= ~SEC_CODE;
1624 asec->flags |= SEC_DATA;
1630 /* Place an orphan section.
1632 We use this to put sections in a reasonable place in the file, and
1633 to ensure that they are aligned as required.
1635 We handle grouped sections here as well. A section named .foo\$nn
1636 goes into the output section .foo. All grouped sections are sorted
1639 Grouped sections for the default sections are handled by the
1640 default linker script using wildcards, and are sorted by
1643 static lang_output_section_statement_type *
1644 gld_${EMULATION_NAME}_place_orphan (asection *s,
1645 const char *secname,
1648 const char *orig_secname = secname;
1649 char *dollar = NULL;
1650 lang_output_section_statement_type *os;
1651 lang_statement_list_type add_child;
1653 /* Look through the script to see where to place this section. */
1654 if (!link_info.relocatable
1655 && (dollar = strchr (secname, '\$')) != NULL)
1657 size_t len = dollar - secname;
1658 char *newname = xmalloc (len + 1);
1659 memcpy (newname, secname, len);
1660 newname[len] = '\0';
1664 lang_list_init (&add_child);
1667 && (os = lang_output_section_find (secname)) != NULL
1668 && os->bfd_section != NULL
1669 && (os->bfd_section->flags == 0
1670 || ((s->flags ^ os->bfd_section->flags)
1671 & (SEC_LOAD | SEC_ALLOC)) == 0))
1673 /* We already have an output section statement with this
1674 name, and its bfd section has compatible flags.
1675 If the section already exists but does not have any flags set,
1676 then it has been created by the linker, probably as a result of
1677 a --section-start command line switch. */
1678 lang_add_section (&add_child, s, os);
1682 static struct orphan_save hold[] =
1685 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1688 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1691 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1697 enum orphan_save_index
1704 static int orphan_init_done = 0;
1705 struct orphan_save *place;
1706 lang_output_section_statement_type *after;
1707 etree_type *address;
1709 if (!orphan_init_done)
1711 struct orphan_save *ho;
1712 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1713 if (ho->name != NULL)
1715 ho->os = lang_output_section_find (ho->name);
1716 if (ho->os != NULL && ho->os->flags == 0)
1717 ho->os->flags = ho->flags;
1719 orphan_init_done = 1;
1722 /* Try to put the new output section in a reasonable place based
1723 on the section name and section flags. */
1726 if ((s->flags & SEC_ALLOC) == 0)
1728 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1729 place = &hold[orphan_bss];
1730 else if ((s->flags & SEC_READONLY) == 0)
1731 place = &hold[orphan_data];
1732 else if ((s->flags & SEC_CODE) == 0)
1733 place = &hold[orphan_rodata];
1735 place = &hold[orphan_text];
1740 if (place->os == NULL)
1741 place->os = lang_output_section_find (place->name);
1744 after = lang_output_section_find_by_flags (s, &place->os, NULL);
1746 /* *ABS* is always the first output section statement. */
1747 after = (&lang_output_section_statement.head
1748 ->output_section_statement);
1751 /* All sections in an executable must be aligned to a page boundary. */
1752 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
1753 os = lang_insert_orphan (s, secname, constraint, after, place, address,
1758 lang_statement_union_type **pl = &os->children.head;
1762 bfd_boolean found_dollar;
1764 /* The section name has a '\$'. Sort it with the other '\$'
1766 found_dollar = FALSE;
1767 for ( ; *pl != NULL; pl = &(*pl)->header.next)
1769 lang_input_section_type *ls;
1772 if ((*pl)->header.type != lang_input_section_enum)
1775 ls = &(*pl)->input_section;
1777 lname = bfd_get_section_name (ls->section->owner, ls->section);
1778 if (strchr (lname, '\$') == NULL)
1785 found_dollar = TRUE;
1786 if (strcmp (orig_secname, lname) < 0)
1792 if (add_child.head != NULL)
1794 add_child.head->header.next = *pl;
1795 *pl = add_child.head;
1803 gld_${EMULATION_NAME}_open_dynamic_archive
1804 (const char *arch ATTRIBUTE_UNUSED, search_dirs_type *search,
1805 lang_input_statement_type *entry)
1809 const char * format;
1810 bfd_boolean use_prefix;
1814 /* Preferred explicit import library for dll's. */
1815 { "lib%s.dll.a", FALSE },
1816 /* Alternate explicit import library for dll's. */
1817 { "%s.dll.a", FALSE },
1818 /* "libfoo.a" could be either an import lib or a static lib.
1819 For backwards compatibility, libfoo.a needs to precede
1820 libfoo.dll and foo.dll in the search. */
1821 { "lib%s.a", FALSE },
1822 /* The 'native' spelling of an import lib name is "foo.lib". */
1823 { "%s.lib", FALSE },
1825 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
1826 { "%s%s.dll", TRUE },
1828 /* Try "libfoo.dll" (default preferred dll name). */
1829 { "lib%s.dll", FALSE },
1830 /* Finally try 'native' dll name "foo.dll". */
1831 { "%s.dll", FALSE },
1832 /* Note: If adding more formats to this table, make sure to check to
1833 see if their length is longer than libname_fmt[0].format, and if
1834 so, update the call to xmalloc() below. */
1837 static unsigned int format_max_len = 0;
1838 const char * filename;
1844 if (! entry->is_archive)
1847 filename = entry->filename;
1849 if (format_max_len == 0)
1850 /* We need to allow space in the memory that we are going to allocate
1851 for the characters in the format string. Since the format array is
1852 static we only need to calculate this information once. In theory
1853 this value could also be computed statically, but this introduces
1854 the possibility for a discrepancy and hence a possible memory
1855 corruption. The lengths we compute here will be too long because
1856 they will include any formating characters (%s) in the strings, but
1857 this will not matter. */
1858 for (i = 0; libname_fmt[i].format; i++)
1859 if (format_max_len < strlen (libname_fmt[i].format))
1860 format_max_len = strlen (libname_fmt[i].format);
1862 full_string = xmalloc (strlen (search->name)
1866 + (pe_dll_search_prefix
1867 ? strlen (pe_dll_search_prefix) : 0)
1869 /* Allow for the terminating NUL and for the path
1870 separator character that is inserted between
1871 search->name and the start of the format string. */
1874 sprintf (full_string, "%s/", search->name);
1875 base_string = full_string + strlen (full_string);
1877 for (i = 0; libname_fmt[i].format; i++)
1880 if (libname_fmt[i].use_prefix)
1882 if (!pe_dll_search_prefix)
1884 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
1888 sprintf (base_string, libname_fmt[i].format, filename);
1890 if (ldfile_try_open_bfd (full_string, entry))
1894 if (!libname_fmt[i].format)
1900 entry->filename = full_string;
1906 gld_${EMULATION_NAME}_find_potential_libraries
1907 (char *name, lang_input_statement_type *entry)
1909 return ldfile_open_file_search (name, entry, "", ".lib");
1913 gld_${EMULATION_NAME}_get_script (int *isfile)
1915 # Scripts compiled in.
1916 # sed commands to quote an ld script as a C string.
1917 sc="-f stringify.sed"
1923 if (link_info.relocatable && config.build_constructors)
1926 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1927 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1928 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1929 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1930 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1931 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1932 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1933 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
1934 echo ' ; else if (link_info.pei386_auto_import == 1) return' >> e${EMULATION_NAME}.c
1935 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
1937 echo ' ; else return' >> e${EMULATION_NAME}.c
1938 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1939 echo '; }' >> e${EMULATION_NAME}.c
1944 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1946 gld_${EMULATION_NAME}_before_parse,
1949 gld_${EMULATION_NAME}_after_parse,
1950 gld_${EMULATION_NAME}_after_open,
1951 after_allocation_default,
1952 set_output_arch_default,
1953 ldemul_default_target,
1954 gld_${EMULATION_NAME}_before_allocation,
1955 gld_${EMULATION_NAME}_get_script,
1956 "${EMULATION_NAME}",
1958 gld_${EMULATION_NAME}_finish,
1959 NULL, /* Create output section statements. */
1960 gld_${EMULATION_NAME}_open_dynamic_archive,
1961 gld_${EMULATION_NAME}_place_orphan,
1962 gld_${EMULATION_NAME}_set_symbols,
1963 NULL, /* parse_args */
1964 gld${EMULATION_NAME}_add_options,
1965 gld${EMULATION_NAME}_handle_option,
1966 gld_${EMULATION_NAME}_unrecognized_file,
1967 gld_${EMULATION_NAME}_list_options,
1968 gld_${EMULATION_NAME}_recognized_file,
1969 gld_${EMULATION_NAME}_find_potential_libraries,
1970 NULL /* new_vers_pattern. */