| blob | 5df3ee77774a3ffaba50df9e3fb002a76725dbb4 |
1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 if [ -z "$MACHINE" ]; then
4 OUTPUT_ARCH=${ARCH}
5 else
6 OUTPUT_ARCH=${ARCH}:${MACHINE}
7 fi
8 rm -f e${EMULATION_NAME}.c
9 (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
10 fragment <<EOF
11 /* Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
12 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
14 This file is part of the GNU Binutils.
16 This program is free software; you can redistribute it and/or modify
17 it under the terms of the GNU General Public License as published by
18 the Free Software Foundation; either version 3 of the License, or
19 (at your option) any later version.
21 This program is distributed in the hope that it will be useful,
22 but WITHOUT ANY WARRANTY; without even the implied warranty of
23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 GNU General Public License for more details.
26 You should have received a copy of the GNU General Public License
27 along with this program; if not, write to the Free Software
28 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
29 MA 02110-1301, USA. */
32 /* For WINDOWS_NT */
33 /* The original file generated returned different default scripts depending
34 on whether certain switches were set, but these switches pertain to the
35 Linux system and that particular version of coff. In the NT case, we
36 only determine if the subsystem is console or windows in order to select
37 the correct entry point by default. */
39 #define TARGET_IS_${EMULATION_NAME}
41 /* Do this before including bfd.h, so we prototype the right functions. */
43 #if defined(TARGET_IS_armpe) \
44 || defined(TARGET_IS_arm_epoc_pe) \
45 || defined(TARGET_IS_arm_wince_pe)
46 #define bfd_arm_allocate_interworking_sections \
47 bfd_${EMULATION_NAME}_allocate_interworking_sections
48 #define bfd_arm_get_bfd_for_interworking \
49 bfd_${EMULATION_NAME}_get_bfd_for_interworking
50 #define bfd_arm_process_before_allocation \
51 bfd_${EMULATION_NAME}_process_before_allocation
52 #endif
54 #include "sysdep.h"
55 #include "bfd.h"
56 #include "bfdlink.h"
57 #include "getopt.h"
58 #include "libiberty.h"
59 #include "ld.h"
60 #include "ldmain.h"
61 #include "ldexp.h"
62 #include "ldlang.h"
63 #include "ldfile.h"
64 #include "ldemul.h"
65 #include <ldgram.h>
66 #include "ldlex.h"
67 #include "ldmisc.h"
68 #include "ldctor.h"
69 #include "coff/internal.h"
71 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
72 header in generic PE code. */
73 #include "coff/i386.h"
74 #include "coff/pe.h"
76 /* FIXME: This is a BFD internal header file, and we should not be
77 using it here. */
78 #include "../bfd/libcoff.h"
80 #include "deffile.h"
81 #include "pe-dll.h"
82 #include "safe-ctype.h"
84 /* Permit the emulation parameters to override the default section
85 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
86 it seem that include/coff/internal.h should not define
87 PE_DEF_SECTION_ALIGNMENT. */
88 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
89 #undef PE_DEF_SECTION_ALIGNMENT
90 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
91 #endif
93 #if defined(TARGET_IS_i386pe) \
94 || defined(TARGET_IS_shpe) \
95 || defined(TARGET_IS_mipspe) \
96 || defined(TARGET_IS_armpe) \
97 || defined(TARGET_IS_arm_epoc_pe) \
98 || defined(TARGET_IS_arm_wince_pe)
99 #define DLL_SUPPORT
100 #endif
102 #if defined(TARGET_IS_i386pe)
103 #define DEFAULT_PSEUDO_RELOC_VERSION 2
104 #else
105 #define DEFAULT_PSEUDO_RELOC_VERSION 1
106 #endif
108 #if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
109 #define PE_DEF_SUBSYSTEM 3
110 #else
111 #undef NT_EXE_IMAGE_BASE
112 #undef PE_DEF_SECTION_ALIGNMENT
113 #undef PE_DEF_FILE_ALIGNMENT
114 #define NT_EXE_IMAGE_BASE 0x00010000
116 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
117 #define PE_DEF_SECTION_ALIGNMENT 0x00001000
118 #define PE_DEF_SUBSYSTEM 9
119 #else
120 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
121 #define PE_DEF_SUBSYSTEM 2
122 #endif
123 #define PE_DEF_FILE_ALIGNMENT 0x00000200
124 #endif
126 static struct internal_extra_pe_aouthdr pe;
127 static int dll;
128 static int pe_subsystem = ${SUBSYSTEM};
129 static flagword real_flags = 0;
130 static int support_old_code = 0;
131 static char * thumb_entry_symbol = NULL;
132 static lang_assignment_statement_type *image_base_statement = 0;
133 static unsigned short pe_dll_characteristics = 0;
135 #ifdef DLL_SUPPORT
136 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
137 static char *pe_out_def_filename = NULL;
138 static char *pe_implib_filename = NULL;
139 static int pe_enable_auto_image_base = 0;
140 static char *pe_dll_search_prefix = NULL;
141 #endif
143 extern const char *output_filename;
145 static void
146 gld_${EMULATION_NAME}_before_parse (void)
147 {
148 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
149 output_filename = "${EXECUTABLE_NAME:-a.exe}";
150 #ifdef DLL_SUPPORT
151 config.dynamic_link = TRUE;
152 config.has_shared = 1;
153 EOF
155 # Cygwin no longer wants these noisy warnings. Other PE
156 # targets might like to consider adding themselves here.
157 case ${target} in
158 *-*-cygwin*)
159 default_auto_import=1
160 ;;
161 *)
162 default_auto_import=-1
163 ;;
164 esac
166 fragment <<EOF
167 link_info.pei386_auto_import = ${default_auto_import};
168 /* Use by default version. */
169 link_info.pei386_runtime_pseudo_reloc = DEFAULT_PSEUDO_RELOC_VERSION;
170 #endif
171 }
172 \f
173 /* PE format extra command line options. */
175 /* Used for setting flags in the PE header. */
176 #define OPTION_BASE_FILE (300 + 1)
177 #define OPTION_DLL (OPTION_BASE_FILE + 1)
178 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
179 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
180 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
181 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
182 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
183 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
184 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
185 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
186 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
187 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
188 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
189 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
190 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
191 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
192 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
193 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
194 #define OPTION_EXCLUDE_ALL_SYMBOLS (OPTION_EXCLUDE_SYMBOLS + 1)
195 #define OPTION_KILL_ATS (OPTION_EXCLUDE_ALL_SYMBOLS + 1)
196 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
197 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
198 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
199 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
200 #define OPTION_INCOMPATIBLE_MSLINK_IMPLIB \
201 (OPTION_IMPLIB_FILENAME + 1)
202 #define OPTION_THUMB_ENTRY (OPTION_INCOMPATIBLE_MSLINK_IMPLIB + 1)
203 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
204 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
205 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
206 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
207 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
208 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
209 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
210 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
211 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
212 #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
213 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
214 (OPTION_EXCLUDE_LIBS + 1)
215 #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
216 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
217 #define OPTION_LARGE_ADDRESS_AWARE \
218 (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
219 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
220 (OPTION_LARGE_ADDRESS_AWARE + 1)
221 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
222 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
223 #define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
224 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
225 #define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
226 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
227 #define OPTION_NO_LEADING_UNDERSCORE \
228 (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
229 #define OPTION_LEADING_UNDERSCORE \
230 (OPTION_NO_LEADING_UNDERSCORE + 1)
231 #define OPTION_ENABLE_LONG_SECTION_NAMES \
232 (OPTION_LEADING_UNDERSCORE + 1)
233 #define OPTION_DISABLE_LONG_SECTION_NAMES \
234 (OPTION_ENABLE_LONG_SECTION_NAMES + 1)
235 /* DLLCharacteristics flags */
236 #define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1)
237 #define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1)
238 #define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1)
239 #define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1)
240 #define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1)
241 #define OPTION_NO_BIND (OPTION_NO_SEH + 1)
242 #define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1)
243 #define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1)
245 static void
246 gld${EMULATION_NAME}_add_options
247 (int ns ATTRIBUTE_UNUSED,
248 char **shortopts ATTRIBUTE_UNUSED,
249 int nl,
250 struct option **longopts,
251 int nrl ATTRIBUTE_UNUSED,
252 struct option **really_longopts ATTRIBUTE_UNUSED)
253 {
254 static const struct option xtra_long[] = {
255 /* PE options */
256 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
257 {"dll", no_argument, NULL, OPTION_DLL},
258 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
259 {"heap", required_argument, NULL, OPTION_HEAP},
260 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
261 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
262 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
263 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
264 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
265 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
266 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
267 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
268 {"stack", required_argument, NULL, OPTION_STACK},
269 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
270 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
271 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
272 {"use-nul-prefixed-import-tables", no_argument, NULL,
273 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
274 {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
275 {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
276 #ifdef DLL_SUPPORT
277 /* getopt allows abbreviations, so we do this to stop it
278 from treating -o as an abbreviation for this option. */
279 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
280 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
281 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
282 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
283 {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
284 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
285 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
286 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
287 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
288 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
289 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
290 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
291 {"incompatible-mslink-implib", no_argument, NULL, OPTION_INCOMPATIBLE_MSLINK_IMPLIB},
292 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
293 /* getopt() allows abbreviations, so we do this to stop it from
294 treating -c as an abbreviation for these --compat-implib. */
295 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
296 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
297 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
298 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
299 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
300 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
301 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
302 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
303 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
304 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
305 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
306 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
307 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
308 #endif
309 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
310 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
311 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
312 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
313 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
314 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
315 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
316 {"no-seh", no_argument, NULL, OPTION_NO_SEH},
317 {"no-bind", no_argument, NULL, OPTION_NO_BIND},
318 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
319 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
320 {NULL, no_argument, NULL, 0}
321 };
323 *longopts
324 = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
325 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
326 }
328 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
329 parameters which may be input from the command line. */
331 typedef struct
332 {
333 void *ptr;
334 int size;
335 int value;
336 char *symbol;
337 int inited;
338 /* FALSE for an assembly level symbol and TRUE for a C visible symbol.
339 C visible symbols can be prefixed by underscore dependent to target's
340 settings. */
341 bfd_boolean is_c_symbol;
342 } definfo;
344 /* Get symbol name dependent to kind and C visible state of
345 underscore. */
346 #define GET_INIT_SYMBOL_NAME(IDX) \
347 (init[(IDX)].symbol \
348 + ((init[(IDX)].is_c_symbol == FALSE || pe_leading_underscore != 0) ? 0 : 1))
350 /* Decorates the C visible symbol by underscore, if target requires. */
351 #define U(CSTR) \
352 (pe_leading_underscore == 0 ? CSTR : "_" CSTR)
354 /* Get size of constant string for a possible underscore prefixed
355 C visible symbol. */
356 #define U_SIZE(CSTR) \
357 (sizeof (CSTR) + pe_leading_underscore == 0 ? 0 : 1)
359 #define D(field,symbol,def,usc) {&pe.field,sizeof(pe.field), def, symbol, 0, usc}
361 static definfo init[] =
362 {
363 /* imagebase must be first */
364 #define IMAGEBASEOFF 0
365 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE),
366 #define DLLOFF 1
367 {&dll, sizeof(dll), 0, "__dll__", 0, FALSE},
368 #define MSIMAGEBASEOFF 2
369 D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE),
370 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE),
371 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE),
372 D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE),
373 D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE),
374 D(MajorImageVersion,"__major_image_version__", 1, FALSE),
375 D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
376 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
377 D(MajorSubsystemVersion,"__major_subsystem_version__", 3, FALSE),
378 #else
379 D(MajorSubsystemVersion,"__major_subsystem_version__", 4, FALSE),
380 #endif
381 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0, FALSE),
382 D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE),
383 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE),
384 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE),
385 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE),
386 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE),
387 D(LoaderFlags,"__loader_flags__", 0x0, FALSE),
388 D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE),
389 { NULL, 0, 0, NULL, 0 , FALSE}
390 };
393 static void
394 gld_${EMULATION_NAME}_list_options (FILE *file)
395 {
396 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
397 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
398 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
399 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
400 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
401 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
402 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
403 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
404 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
405 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
406 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
407 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
408 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
409 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
410 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
411 fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n"));
412 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
413 #ifdef DLL_SUPPORT
414 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
415 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
416 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
417 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
418 fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n"));
419 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
420 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
421 fprintf (file, _(" Exclude objects, archive members from auto\n"));
422 fprintf (file, _(" export, place into import library instead.\n"));
423 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
424 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
425 fprintf (file, _(" --out-implib <file> Generate import library\n"));
426 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
427 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
428 fprintf (file, _(" --incompatible-mslink-implib When generating an import library, create\n\
429 one that is not consumable by the native\n\
430 linker (original behavior).\n"));
431 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
432 create __imp_<SYMBOL> as well.\n"));
433 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
434 unless user specifies one\n"));
435 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
436 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
437 an importlib, use <string><basename>.dll\n\
438 in preference to lib<basename>.dll \n"));
439 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\
440 __imp_sym for DATA references\n"));
441 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
442 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
443 adding pseudo-relocations resolved at\n\
444 runtime.\n"));
445 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
446 auto-imported DATA.\n"));
447 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
448 or linking to DLLs (esp. auto-import)\n"));
449 #endif
450 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
451 greater than 2 gigabytes\n"));
452 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
453 executable image files\n"));
454 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
455 in object files\n"));
456 fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\
457 address space layout randomization (ASLR)\n"));
458 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
459 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
460 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
461 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
462 be called in this image\n"));
463 fprintf (file, _(" --no-bind Do not bind this image\n"));
464 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
465 fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
466 }
469 static void
470 set_pe_name (char *name, long val)
471 {
472 int i;
474 /* Find the name and set it. */
475 for (i = 0; init[i].ptr; i++)
476 {
477 if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
478 {
479 init[i].value = val;
480 init[i].inited = 1;
481 if (strcmp (name,"__image_base__") == 0)
482 set_pe_name (U ("__ImageBase"), val);
483 return;
484 }
485 }
486 abort ();
487 }
489 static void
490 set_entry_point (void)
491 {
492 const char *entry;
493 const char *initial_symbol_char;
494 int i, u = -1;
496 static const struct
497 {
498 const int value;
499 const char *entry;
500 }
501 v[] =
502 {
503 { 1, "NtProcessStartup" },
504 { 2, "WinMainCRTStartup" },
505 { 3, "mainCRTStartup" },
506 { 7, "__PosixProcessStartup"},
507 { 9, "WinMainCRTStartup" },
508 {14, "mainCRTStartup" },
509 { 0, NULL }
510 };
512 /* Entry point name for arbitrary subsystem numbers. */
513 static const char default_entry[] = "mainCRTStartup";
515 if (link_info.shared || dll)
516 {
517 #if defined (TARGET_IS_i386pe)
518 entry = "DllMainCRTStartup@12";
519 #else
520 entry = "DllMainCRTStartup";
521 #endif
522 }
523 else
524 {
526 for (i = 0; v[i].entry; i++)
527 if (v[i].value == pe_subsystem)
528 break;
530 /* If no match, use the default. */
531 if (v[i].entry != NULL)
532 entry = v[i].entry;
533 else
534 entry = default_entry;
535 }
537 /* Now we check target's default for getting proper symbol_char. */
538 u = pe_leading_underscore;
539 if (u == -1 && !bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
540 bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
542 if (u == 0)
543 initial_symbol_char = "";
544 else if (u != -1)
545 initial_symbol_char = "_";
546 else
547 abort ();
548 pe_leading_underscore = u;
550 if (*initial_symbol_char != '\0')
551 {
552 char *alc_entry;
554 /* lang_default_entry expects its argument to be permanently
555 allocated, so we don't free this string. */
556 alc_entry = xmalloc (strlen (initial_symbol_char)
557 + strlen (entry)
558 + 1);
559 strcpy (alc_entry, initial_symbol_char);
560 strcat (alc_entry, entry);
561 entry = alc_entry;
562 }
564 lang_default_entry (entry);
565 }
567 static void
568 set_pe_subsystem (void)
569 {
570 const char *sver;
571 char *end;
572 int len;
573 int i;
574 unsigned long temp_subsystem;
575 static const struct
576 {
577 const char *name;
578 const int value;
579 }
580 v[] =
581 {
582 { "native", 1},
583 { "windows", 2},
584 { "console", 3},
585 { "posix", 7},
586 { "wince", 9},
587 { "xbox", 14},
588 { NULL, 0 }
589 };
591 /* Check for the presence of a version number. */
592 sver = strchr (optarg, ':');
593 if (sver == NULL)
594 len = strlen (optarg);
595 else
596 {
597 len = sver - optarg;
598 set_pe_name ("__major_subsystem_version__",
599 strtoul (sver + 1, &end, 0));
600 if (*end == '.')
601 set_pe_name ("__minor_subsystem_version__",
602 strtoul (end + 1, &end, 0));
603 if (*end != '\0')
604 einfo (_("%P: warning: bad version number in -subsystem option\n"));
605 }
607 /* Check for numeric subsystem. */
608 temp_subsystem = strtoul (optarg, & end, 0);
609 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
610 {
611 /* Search list for a numeric match to use its entry point. */
612 for (i = 0; v[i].name; i++)
613 if (v[i].value == (int) temp_subsystem)
614 break;
616 /* Use this subsystem. */
617 pe_subsystem = (int) temp_subsystem;
618 }
619 else
620 {
621 /* Search for subsystem by name. */
622 for (i = 0; v[i].name; i++)
623 if (strncmp (optarg, v[i].name, len) == 0
624 && v[i].name[len] == '\0')
625 break;
627 if (v[i].name == NULL)
628 {
629 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
630 return;
631 }
633 pe_subsystem = v[i].value;
634 }
636 set_pe_name ("__subsystem__", pe_subsystem);
638 return;
639 }
642 static void
643 set_pe_value (char *name)
644 {
645 char *end;
647 set_pe_name (name, strtoul (optarg, &end, 0));
649 if (end == optarg)
650 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
652 optarg = end;
653 }
656 static void
657 set_pe_stack_heap (char *resname, char *comname)
658 {
659 set_pe_value (resname);
661 if (*optarg == ',')
662 {
663 optarg++;
664 set_pe_value (comname);
665 }
666 else if (*optarg)
667 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
668 }
671 static bfd_boolean
672 gld${EMULATION_NAME}_handle_option (int optc)
673 {
674 switch (optc)
675 {
676 default:
677 return FALSE;
679 case OPTION_BASE_FILE:
680 link_info.base_file = fopen (optarg, FOPEN_WB);
681 if (link_info.base_file == NULL)
682 {
683 /* xgettext:c-format */
684 fprintf (stderr, _("%s: Can't open base file %s\n"),
685 program_name, optarg);
686 xexit (1);
687 }
688 break;
690 /* PE options. */
691 case OPTION_HEAP:
692 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
693 break;
694 case OPTION_STACK:
695 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
696 break;
697 case OPTION_SUBSYSTEM:
698 set_pe_subsystem ();
699 break;
700 case OPTION_MAJOR_OS_VERSION:
701 set_pe_value ("__major_os_version__");
702 break;
703 case OPTION_MINOR_OS_VERSION:
704 set_pe_value ("__minor_os_version__");
705 break;
706 case OPTION_MAJOR_SUBSYSTEM_VERSION:
707 set_pe_value ("__major_subsystem_version__");
708 break;
709 case OPTION_MINOR_SUBSYSTEM_VERSION:
710 set_pe_value ("__minor_subsystem_version__");
711 break;
712 case OPTION_MAJOR_IMAGE_VERSION:
713 set_pe_value ("__major_image_version__");
714 break;
715 case OPTION_MINOR_IMAGE_VERSION:
716 set_pe_value ("__minor_image_version__");
717 break;
718 case OPTION_FILE_ALIGNMENT:
719 set_pe_value ("__file_alignment__");
720 break;
721 case OPTION_SECTION_ALIGNMENT:
722 set_pe_value ("__section_alignment__");
723 break;
724 case OPTION_DLL:
725 set_pe_name ("__dll__", 1);
726 break;
727 case OPTION_IMAGE_BASE:
728 set_pe_value ("__image_base__");
729 break;
730 case OPTION_SUPPORT_OLD_CODE:
731 support_old_code = 1;
732 break;
733 case OPTION_THUMB_ENTRY:
734 thumb_entry_symbol = optarg;
735 break;
736 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
737 pe_use_nul_prefixed_import_tables = TRUE;
738 break;
739 case OPTION_NO_LEADING_UNDERSCORE:
740 pe_leading_underscore = 0;
741 break;
742 case OPTION_LEADING_UNDERSCORE:
743 pe_leading_underscore = 1;
744 break;
745 #ifdef DLL_SUPPORT
746 case OPTION_OUT_DEF:
747 pe_out_def_filename = xstrdup (optarg);
748 break;
749 case OPTION_EXPORT_ALL:
750 pe_dll_export_everything = 1;
751 break;
752 case OPTION_EXCLUDE_SYMBOLS:
753 pe_dll_add_excludes (optarg, EXCLUDESYMS);
754 break;
755 case OPTION_EXCLUDE_ALL_SYMBOLS:
756 pe_dll_exclude_all_symbols = 1;
757 break;
758 case OPTION_EXCLUDE_LIBS:
759 pe_dll_add_excludes (optarg, EXCLUDELIBS);
760 break;
761 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
762 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
763 break;
764 case OPTION_KILL_ATS:
765 pe_dll_kill_ats = 1;
766 break;
767 case OPTION_STDCALL_ALIASES:
768 pe_dll_stdcall_aliases = 1;
769 break;
770 case OPTION_ENABLE_STDCALL_FIXUP:
771 pe_enable_stdcall_fixup = 1;
772 break;
773 case OPTION_DISABLE_STDCALL_FIXUP:
774 pe_enable_stdcall_fixup = 0;
775 break;
776 case OPTION_IMPLIB_FILENAME:
777 pe_implib_filename = xstrdup (optarg);
778 break;
779 case OPTION_INCOMPATIBLE_MSLINK_IMPLIB:
780 pe_mslink_compatible_implib = 0;
781 break;
782 case OPTION_WARN_DUPLICATE_EXPORTS:
783 pe_dll_warn_dup_exports = 1;
784 break;
785 case OPTION_IMP_COMPAT:
786 pe_dll_compat_implib = 1;
787 break;
788 case OPTION_ENABLE_AUTO_IMAGE_BASE:
789 pe_enable_auto_image_base = 1;
790 break;
791 case OPTION_DISABLE_AUTO_IMAGE_BASE:
792 pe_enable_auto_image_base = 0;
793 break;
794 case OPTION_DLL_SEARCH_PREFIX:
795 pe_dll_search_prefix = xstrdup (optarg);
796 break;
797 case OPTION_NO_DEFAULT_EXCLUDES:
798 pe_dll_do_default_excludes = 0;
799 break;
800 case OPTION_DLL_ENABLE_AUTO_IMPORT:
801 link_info.pei386_auto_import = 1;
802 break;
803 case OPTION_DLL_DISABLE_AUTO_IMPORT:
804 link_info.pei386_auto_import = 0;
805 break;
806 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
807 link_info.pei386_runtime_pseudo_reloc =
808 DEFAULT_PSEUDO_RELOC_VERSION;
809 break;
810 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
811 link_info.pei386_runtime_pseudo_reloc = 1;
812 break;
813 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
814 link_info.pei386_runtime_pseudo_reloc = 2;
815 break;
816 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
817 link_info.pei386_runtime_pseudo_reloc = 0;
818 break;
819 case OPTION_ENABLE_EXTRA_PE_DEBUG:
820 pe_dll_extra_pe_debug = 1;
821 break;
822 #endif
823 case OPTION_LARGE_ADDRESS_AWARE:
824 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
825 break;
826 case OPTION_ENABLE_LONG_SECTION_NAMES:
827 pe_use_coff_long_section_names = 1;
828 break;
829 case OPTION_DISABLE_LONG_SECTION_NAMES:
830 pe_use_coff_long_section_names = 0;
831 break;
832 /* Get DLLCharacteristics bits */
833 case OPTION_DYNAMIC_BASE:
834 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
835 break;
836 case OPTION_FORCE_INTEGRITY:
837 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
838 break;
839 case OPTION_NX_COMPAT:
840 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
841 break;
842 case OPTION_NO_ISOLATION:
843 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
844 break;
845 case OPTION_NO_SEH:
846 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
847 break;
848 case OPTION_NO_BIND:
849 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
850 break;
851 case OPTION_WDM_DRIVER:
852 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
853 break;
854 case OPTION_TERMINAL_SERVER_AWARE:
855 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
856 break;
857 }
859 /* Set DLLCharacteristics bits */
860 set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
862 return TRUE;
863 }
864 \f
866 #ifdef DLL_SUPPORT
867 static unsigned long
868 strhash (const char *str)
869 {
870 const unsigned char *s;
871 unsigned long hash;
872 unsigned int c;
873 unsigned int len;
875 hash = 0;
876 len = 0;
877 s = (const unsigned char *) str;
878 while ((c = *s++) != '\0')
879 {
880 hash += c + (c << 17);
881 hash ^= hash >> 2;
882 ++len;
883 }
884 hash += len + (len << 17);
885 hash ^= hash >> 2;
887 return hash;
888 }
890 /* Use the output file to create a image base for relocatable DLLs. */
892 static unsigned long
893 compute_dll_image_base (const char *ofile)
894 {
895 unsigned long hash = strhash (ofile);
896 return 0x61300000 + ((hash << 16) & 0x0FFC0000);
897 }
898 #endif
900 /* Assign values to the special symbols before the linker script is
901 read. */
903 static void
904 gld_${EMULATION_NAME}_set_symbols (void)
905 {
906 /* Run through and invent symbols for all the
907 names and insert the defaults. */
908 int j;
910 if (!init[IMAGEBASEOFF].inited)
911 {
912 if (link_info.relocatable)
913 init[IMAGEBASEOFF].value = 0;
914 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
915 {
916 #ifdef DLL_SUPPORT
917 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base
918 ? compute_dll_image_base (output_filename)
919 : NT_DLL_IMAGE_BASE);
920 #else
921 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
922 #endif
923 }
924 else
925 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
926 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
927 }
929 /* Don't do any symbol assignments if this is a relocatable link. */
930 if (link_info.relocatable)
931 return;
933 /* Glue the assignments into the abs section. */
934 push_stat_ptr (&abs_output_section->children);
936 for (j = 0; init[j].ptr; j++)
937 {
938 long val = init[j].value;
939 lang_assignment_statement_type *rv;
941 rv = lang_add_assignment (exp_assop ('=', GET_INIT_SYMBOL_NAME (j),
942 exp_intop (val)));
943 if (init[j].size == sizeof (short))
944 *(short *) init[j].ptr = val;
945 else if (init[j].size == sizeof (int))
946 *(int *) init[j].ptr = val;
947 else if (init[j].size == sizeof (long))
948 *(long *) init[j].ptr = val;
949 /* This might be a long long or other special type. */
950 else if (init[j].size == sizeof (bfd_vma))
951 *(bfd_vma *) init[j].ptr = val;
952 else abort ();
953 if (j == IMAGEBASEOFF)
954 image_base_statement = rv;
955 }
956 /* Restore the pointer. */
957 pop_stat_ptr ();
959 if (pe.FileAlignment > pe.SectionAlignment)
960 {
961 einfo (_("%P: warning, file alignment > section alignment.\n"));
962 }
963 }
965 /* This is called after the linker script and the command line options
966 have been read. */
968 static void
969 gld_${EMULATION_NAME}_after_parse (void)
970 {
971 /* PR ld/6744: Warn the user if they have used an ELF-only
972 option hoping it will work on PE. */
973 if (link_info.export_dynamic)
974 einfo (_("%P: warning: --export-dynamic is not supported for PE "
975 "targets, did you mean --export-all-symbols?\n"));
977 set_entry_point ();
979 after_parse_default ();
980 }
982 /* pe-dll.c directly accesses pe_data_import_dll,
983 so it must be defined outside of #ifdef DLL_SUPPORT.
984 Note - this variable is deliberately not initialised.
985 This allows it to be treated as a common varaible, and only
986 exist in one incarnation in a multiple target enabled linker. */
987 char * pe_data_import_dll;
989 #ifdef DLL_SUPPORT
990 static struct bfd_link_hash_entry *pe_undef_found_sym;
992 static bfd_boolean
993 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
994 {
995 int sl;
996 char *string = inf;
997 const char *hs = h->root.string;
999 sl = strlen (string);
1000 if (h->type == bfd_link_hash_defined
1001 && ((*hs == '@' && *string == '_'
1002 && strncmp (hs + 1, string + 1, sl - 1) == 0)
1003 || strncmp (hs, string, sl) == 0)
1004 && h->root.string[sl] == '@')
1005 {
1006 pe_undef_found_sym = h;
1007 return FALSE;
1008 }
1009 return TRUE;
1010 }
1012 static void
1013 pe_fixup_stdcalls (void)
1014 {
1015 static int gave_warning_message = 0;
1016 struct bfd_link_hash_entry *undef, *sym;
1018 if (pe_dll_extra_pe_debug)
1019 printf ("%s\n", __FUNCTION__);
1021 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1022 if (undef->type == bfd_link_hash_undefined)
1023 {
1024 char* at = strchr (undef->root.string, '@');
1025 int lead_at = (*undef->root.string == '@');
1026 if (lead_at)
1027 at = strchr (undef->root.string + 1, '@');
1029 if (at || lead_at)
1030 {
1031 /* The symbol is a stdcall symbol, so let's look for a
1032 cdecl symbol with the same name and resolve to that. */
1033 char *cname = xstrdup (undef->root.string);
1035 if (lead_at)
1036 *cname = '_';
1037 at = strchr (cname, '@');
1038 if (at)
1039 *at = 0;
1040 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
1042 if (sym && sym->type == bfd_link_hash_defined)
1043 {
1044 undef->type = bfd_link_hash_defined;
1045 undef->u.def.value = sym->u.def.value;
1046 undef->u.def.section = sym->u.def.section;
1048 if (pe_enable_stdcall_fixup == -1)
1049 {
1050 einfo (_("Warning: resolving %s by linking to %s\n"),
1051 undef->root.string, cname);
1052 if (! gave_warning_message)
1053 {
1054 gave_warning_message = 1;
1055 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1056 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1057 }
1058 }
1059 }
1060 }
1061 else
1062 {
1063 /* The symbol is a cdecl symbol, so we look for stdcall
1064 symbols - which means scanning the whole symbol table. */
1065 pe_undef_found_sym = 0;
1066 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
1067 (char *) undef->root.string);
1068 sym = pe_undef_found_sym;
1069 if (sym)
1070 {
1071 undef->type = bfd_link_hash_defined;
1072 undef->u.def.value = sym->u.def.value;
1073 undef->u.def.section = sym->u.def.section;
1075 if (pe_enable_stdcall_fixup == -1)
1076 {
1077 einfo (_("Warning: resolving %s by linking to %s\n"),
1078 undef->root.string, sym->root.string);
1079 if (! gave_warning_message)
1080 {
1081 gave_warning_message = 1;
1082 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1083 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1084 }
1085 }
1086 }
1087 }
1088 }
1089 }
1091 static int
1092 make_import_fixup (arelent *rel, asection *s)
1093 {
1094 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1095 char addend[4];
1097 if (pe_dll_extra_pe_debug)
1098 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1099 (unsigned long) rel->address, (long) rel->addend);
1101 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
1102 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
1103 s->owner, s, rel->address);
1105 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
1107 return 1;
1108 }
1110 static void
1111 pe_find_data_imports (void)
1112 {
1113 struct bfd_link_hash_entry *undef, *sym;
1115 if (link_info.pei386_auto_import == 0)
1116 return;
1118 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1119 {
1120 if (undef->type == bfd_link_hash_undefined)
1121 {
1122 /* C++ symbols are *long*. */
1123 char buf[4096];
1125 if (pe_dll_extra_pe_debug)
1126 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1128 sprintf (buf, "__imp_%s", undef->root.string);
1130 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
1132 if (sym && sym->type == bfd_link_hash_defined)
1133 {
1134 bfd *b = sym->u.def.section->owner;
1135 asymbol **symbols;
1136 int nsyms, i;
1138 if (link_info.pei386_auto_import == -1)
1139 {
1140 static bfd_boolean warned = FALSE;
1142 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
1143 undef->root.string, buf);
1145 /* PR linker/4844. */
1146 if (! warned)
1147 {
1148 warned = TRUE;
1149 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
1150 This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
1151 }
1152 }
1154 if (!bfd_generic_link_read_symbols (b))
1155 {
1156 einfo (_("%B%F: could not read symbols: %E\n"), b);
1157 return;
1158 }
1160 symbols = bfd_get_outsymbols (b);
1161 nsyms = bfd_get_symcount (b);
1163 for (i = 0; i < nsyms; i++)
1164 {
1165 if (! CONST_STRNEQ (symbols[i]->name,
1166 U ("_head_")))
1167 continue;
1169 if (pe_dll_extra_pe_debug)
1170 printf ("->%s\n", symbols[i]->name);
1172 pe_data_import_dll = (char *) (symbols[i]->name
1173 + U_SIZE ("_head_") - 1);
1174 break;
1175 }
1177 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
1178 make_import_fixup);
1180 /* Let's differentiate it somehow from defined. */
1181 undef->type = bfd_link_hash_defweak;
1182 /* We replace original name with __imp_ prefixed, this
1183 1) may trash memory 2) leads to duplicate symbol generation.
1184 Still, IMHO it's better than having name poluted. */
1185 undef->root.string = sym->root.string;
1186 undef->u.def.value = sym->u.def.value;
1187 undef->u.def.section = sym->u.def.section;
1188 }
1189 }
1190 }
1191 }
1193 static bfd_boolean
1194 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1195 {
1196 if (pe_dll_extra_pe_debug)
1197 printf ("+%s\n", h->string);
1199 return TRUE;
1200 }
1201 #endif /* DLL_SUPPORT */
1203 static void
1204 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1205 {
1206 int *found = (int *) obj;
1207 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1208 *found = 1;
1209 }
1211 static void
1212 gld_${EMULATION_NAME}_after_open (void)
1213 {
1214 #ifdef DLL_SUPPORT
1215 if (pe_dll_extra_pe_debug)
1216 {
1217 bfd *a;
1218 struct bfd_link_hash_entry *sym;
1220 printf ("%s()\n", __FUNCTION__);
1222 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1223 printf ("-%s\n", sym->root.string);
1224 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1226 for (a = link_info.input_bfds; a; a = a->link_next)
1227 printf ("*%s\n",a->filename);
1228 }
1229 #endif
1231 /* Pass the wacky PE command line options into the output bfd.
1232 FIXME: This should be done via a function, rather than by
1233 including an internal BFD header. */
1235 if (coff_data (link_info.output_bfd) == NULL
1236 || coff_data (link_info.output_bfd)->pe == 0)
1237 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1238 link_info.output_bfd);
1240 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1241 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1242 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1244 /* At this point we must decide whether to use long section names
1245 in the output or not. If the user hasn't explicitly specified
1246 on the command line, we leave it to the default for the format
1247 (object files yes, image files no), except if there is debug
1248 information present; GDB relies on the long section names to
1249 find it, so enable it in that case. */
1250 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1251 {
1252 /* Iterate over all sections of all input BFDs, checking
1253 for any that begin 'debug_' and are long names. */
1254 LANG_FOR_EACH_INPUT_STATEMENT (is)
1255 {
1256 int found_debug = 0;
1257 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1258 if (found_debug)
1259 {
1260 pe_use_coff_long_section_names = 1;
1261 break;
1262 }
1263 }
1264 }
1266 pe_output_file_set_long_section_names (link_info.output_bfd);
1268 #ifdef DLL_SUPPORT
1269 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1270 pe_fixup_stdcalls ();
1272 pe_process_import_defs (link_info.output_bfd, &link_info);
1274 pe_find_data_imports ();
1276 /* As possibly new symbols are added by imports, we rerun
1277 stdcall/fastcall fixup here. */
1278 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1279 pe_fixup_stdcalls ();
1281 #if defined (TARGET_IS_i386pe) \
1282 || defined (TARGET_IS_armpe) \
1283 || defined (TARGET_IS_arm_epoc_pe) \
1284 || defined (TARGET_IS_arm_wince_pe)
1285 if (!link_info.relocatable)
1286 pe_dll_build_sections (link_info.output_bfd, &link_info);
1287 #else
1288 if (link_info.shared)
1289 pe_dll_build_sections (link_info.output_bfd, &link_info);
1290 else
1291 pe_exe_build_sections (link_info.output_bfd, &link_info);
1292 #endif
1293 #endif /* DLL_SUPPORT */
1295 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1296 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1297 {
1298 /* The arm backend needs special fields in the output hash structure.
1299 These will only be created if the output format is an arm format,
1300 hence we do not support linking and changing output formats at the
1301 same time. Use a link followed by objcopy to change output formats. */
1302 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1303 return;
1304 }
1305 {
1306 /* Find a BFD that can hold the interworking stubs. */
1307 LANG_FOR_EACH_INPUT_STATEMENT (is)
1308 {
1309 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1310 break;
1311 }
1312 }
1313 #endif
1315 {
1316 /* This next chunk of code tries to detect the case where you have
1317 two import libraries for the same DLL (specifically,
1318 symbolically linking libm.a and libc.a in cygwin to
1319 libcygwin.a). In those cases, it's possible for function
1320 thunks from the second implib to be used but without the
1321 head/tail objects, causing an improper import table. We detect
1322 those cases and rename the "other" import libraries to match
1323 the one the head/tail come from, so that the linker will sort
1324 things nicely and produce a valid import table. */
1326 LANG_FOR_EACH_INPUT_STATEMENT (is)
1327 {
1328 if (is->the_bfd->my_archive)
1329 {
1330 int idata2 = 0, reloc_count=0, is_imp = 0;
1331 asection *sec;
1333 /* See if this is an import library thunk. */
1334 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1335 {
1336 if (strcmp (sec->name, ".idata\$2") == 0)
1337 idata2 = 1;
1338 if (CONST_STRNEQ (sec->name, ".idata\$"))
1339 is_imp = 1;
1340 reloc_count += sec->reloc_count;
1341 }
1343 if (is_imp && !idata2 && reloc_count)
1344 {
1345 /* It is, look for the reference to head and see if it's
1346 from our own library. */
1347 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1348 {
1349 int i;
1350 long relsize;
1351 asymbol **symbols;
1352 arelent **relocs;
1353 int nrelocs;
1355 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1356 if (relsize < 1)
1357 break;
1359 if (!bfd_generic_link_read_symbols (is->the_bfd))
1360 {
1361 einfo (_("%B%F: could not read symbols: %E\n"),
1362 is->the_bfd);
1363 return;
1364 }
1365 symbols = bfd_get_outsymbols (is->the_bfd);
1367 relocs = xmalloc ((size_t) relsize);
1368 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1369 relocs, symbols);
1370 if (nrelocs < 0)
1371 {
1372 free (relocs);
1373 einfo ("%X%P: unable to process relocs: %E\n");
1374 return;
1375 }
1377 for (i = 0; i < nrelocs; i++)
1378 {
1379 struct bfd_symbol *s;
1380 struct bfd_link_hash_entry * blhe;
1381 char *other_bfd_filename;
1382 char *n;
1384 s = (relocs[i]->sym_ptr_ptr)[0];
1386 if (s->flags & BSF_LOCAL)
1387 continue;
1389 /* Thunk section with reloc to another bfd. */
1390 blhe = bfd_link_hash_lookup (link_info.hash,
1391 s->name,
1392 FALSE, FALSE, TRUE);
1394 if (blhe == NULL
1395 || blhe->type != bfd_link_hash_defined)
1396 continue;
1398 other_bfd_filename
1399 = blhe->u.def.section->owner->my_archive
1400 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1401 : bfd_get_filename (blhe->u.def.section->owner);
1403 if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
1404 other_bfd_filename) == 0)
1405 continue;
1407 /* Rename this implib to match the other one. */
1408 n = xmalloc (strlen (other_bfd_filename) + 1);
1409 strcpy (n, other_bfd_filename);
1410 is->the_bfd->my_archive->filename = n;
1411 }
1413 free (relocs);
1414 /* Note - we do not free the symbols,
1415 they are now cached in the BFD. */
1416 }
1417 }
1418 }
1419 }
1420 }
1422 {
1423 int is_ms_arch = 0;
1424 bfd *cur_arch = 0;
1425 lang_input_statement_type *is2;
1426 lang_input_statement_type *is3;
1428 /* Careful - this is a shell script. Watch those dollar signs! */
1429 /* Microsoft import libraries have every member named the same,
1430 and not in the right order for us to link them correctly. We
1431 must detect these and rename the members so that they'll link
1432 correctly. There are three types of objects: the head, the
1433 thunks, and the sentinel(s). The head is easy; it's the one
1434 with idata2. We assume that the sentinels won't have relocs,
1435 and the thunks will. It's easier than checking the symbol
1436 table for external references. */
1437 LANG_FOR_EACH_INPUT_STATEMENT (is)
1438 {
1439 if (is->the_bfd->my_archive)
1440 {
1441 char *pnt;
1442 bfd *arch = is->the_bfd->my_archive;
1444 if (cur_arch != arch)
1445 {
1446 cur_arch = arch;
1447 is_ms_arch = 1;
1449 for (is3 = is;
1450 is3 && is3->the_bfd->my_archive == arch;
1451 is3 = (lang_input_statement_type *) is3->next)
1452 {
1453 /* A MS dynamic import library can also contain static
1454 members, so look for the first element with a .dll
1455 extension, and use that for the remainder of the
1456 comparisons. */
1457 pnt = strrchr (is3->the_bfd->filename, '.');
1458 if (pnt != NULL && strcmp (pnt, ".dll") == 0)
1459 break;
1460 }
1462 if (is3 == NULL)
1463 is_ms_arch = 0;
1464 else
1465 {
1466 /* OK, found one. Now look to see if the remaining
1467 (dynamic import) members use the same name. */
1468 for (is2 = is;
1469 is2 && is2->the_bfd->my_archive == arch;
1470 is2 = (lang_input_statement_type *) is2->next)
1471 {
1472 /* Skip static members, ie anything with a .obj
1473 extension. */
1474 pnt = strrchr (is2->the_bfd->filename, '.');
1475 if (pnt != NULL && strcmp (pnt, ".obj") == 0)
1476 continue;
1478 if (strcmp (is3->the_bfd->filename,
1479 is2->the_bfd->filename))
1480 {
1481 is_ms_arch = 0;
1482 break;
1483 }
1484 }
1485 }
1486 }
1488 /* This fragment might have come from an .obj file in a Microsoft
1489 import, and not an actual import record. If this is the case,
1490 then leave the filename alone. */
1491 pnt = strrchr (is->the_bfd->filename, '.');
1493 if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
1494 {
1495 int idata2 = 0, reloc_count=0;
1496 asection *sec;
1497 char *new_name, seq;
1499 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1500 {
1501 if (strcmp (sec->name, ".idata\$2") == 0)
1502 idata2 = 1;
1503 reloc_count += sec->reloc_count;
1504 }
1506 if (idata2) /* .idata2 is the TOC */
1507 seq = 'a';
1508 else if (reloc_count > 0) /* thunks */
1509 seq = 'b';
1510 else /* sentinel */
1511 seq = 'c';
1513 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1514 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1515 is->the_bfd->filename = new_name;
1517 new_name = xmalloc (strlen (is->filename) + 3);
1518 sprintf (new_name, "%s.%c", is->filename, seq);
1519 is->filename = new_name;
1520 }
1521 }
1522 }
1523 }
1525 {
1526 /* The following chunk of code tries to identify jump stubs in
1527 import libraries which are dead code and eliminates them
1528 from the final link. For each exported symbol <sym>, there
1529 is a object file in the import library with a .text section
1530 and several .idata\$* sections. The .text section contains the
1531 symbol definition for <sym> which is a jump stub of the form
1532 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1533 for __imp_<sym> which is the address of the slot for <sym> in
1534 the import address table. When a symbol is imported explicitly
1535 using __declspec(dllimport) declaration, the compiler generates
1536 a reference to __imp_<sym> which directly resolves to the
1537 symbol in .idata\$5, in which case the jump stub code is not
1538 needed. The following code tries to identify jump stub sections
1539 in import libraries which are not referred to by anyone and
1540 marks them for exclusion from the final link. */
1541 LANG_FOR_EACH_INPUT_STATEMENT (is)
1542 {
1543 if (is->the_bfd->my_archive)
1544 {
1545 int is_imp = 0;
1546 asection *sec, *stub_sec = NULL;
1548 /* See if this is an import library thunk. */
1549 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1550 {
1551 if (strncmp (sec->name, ".idata\$", 7) == 0)
1552 is_imp = 1;
1553 /* The section containing the jmp stub has code
1554 and has a reloc. */
1555 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1556 stub_sec = sec;
1557 }
1559 if (is_imp && stub_sec)
1560 {
1561 asymbol **symbols;
1562 long nsyms, src_count;
1563 struct bfd_link_hash_entry * blhe;
1565 if (!bfd_generic_link_read_symbols (is->the_bfd))
1566 {
1567 einfo (_("%B%F: could not read symbols: %E\n"),
1568 is->the_bfd);
1569 return;
1570 }
1571 symbols = bfd_get_outsymbols (is->the_bfd);
1572 nsyms = bfd_get_symcount (is->the_bfd);
1574 for (src_count = 0; src_count < nsyms; src_count++)
1575 {
1576 if (symbols[src_count]->section->id == stub_sec->id)
1577 {
1578 /* This symbol belongs to the section containing
1579 the stub. */
1580 blhe = bfd_link_hash_lookup (link_info.hash,
1581 symbols[src_count]->name,
1582 FALSE, FALSE, TRUE);
1583 /* If the symbol in the stub section has no other
1584 undefined references, exclude the stub section
1585 from the final link. */
1586 if (blhe && (blhe->type == bfd_link_hash_defined)
1587 && (blhe->u.undef.next == NULL))
1588 stub_sec->flags |= SEC_EXCLUDE;
1589 }
1590 }
1591 }
1592 }
1593 }
1594 }
1595 }
1596 \f
1597 static void
1598 gld_${EMULATION_NAME}_before_allocation (void)
1599 {
1600 #ifdef TARGET_IS_ppcpe
1601 /* Here we rummage through the found bfds to collect toc information. */
1602 {
1603 LANG_FOR_EACH_INPUT_STATEMENT (is)
1604 {
1605 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1606 {
1607 /* xgettext:c-format */
1608 einfo (_("Errors encountered processing file %s\n"), is->filename);
1609 }
1610 }
1611 }
1613 /* We have seen it all. Allocate it, and carry on. */
1614 ppc_allocate_toc_section (&link_info);
1615 #endif /* TARGET_IS_ppcpe */
1617 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1618 /* FIXME: we should be able to set the size of the interworking stub
1619 section.
1621 Here we rummage through the found bfds to collect glue
1622 information. FIXME: should this be based on a command line
1623 option? krk@cygnus.com. */
1624 {
1625 LANG_FOR_EACH_INPUT_STATEMENT (is)
1626 {
1627 if (! bfd_arm_process_before_allocation
1628 (is->the_bfd, & link_info, support_old_code))
1629 {
1630 /* xgettext:c-format */
1631 einfo (_("Errors encountered processing file %s for interworking\n"),
1632 is->filename);
1633 }
1634 }
1635 }
1637 /* We have seen it all. Allocate it, and carry on. */
1638 bfd_arm_allocate_interworking_sections (& link_info);
1639 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1641 before_allocation_default ();
1642 }
1643 \f
1644 #ifdef DLL_SUPPORT
1645 /* This is called when an input file isn't recognized as a BFD. We
1646 check here for .DEF files and pull them in automatically. */
1648 static int
1649 saw_option (char *option)
1650 {
1651 int i;
1653 for (i = 0; init[i].ptr; i++)
1654 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1655 return init[i].inited;
1656 return 0;
1657 }
1658 #endif /* DLL_SUPPORT */
1660 static bfd_boolean
1661 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1662 {
1663 #ifdef DLL_SUPPORT
1664 const char *ext = entry->filename + strlen (entry->filename) - 4;
1666 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1667 {
1668 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1670 if (pe_def_file)
1671 {
1672 int i, buflen=0, len;
1673 char *buf;
1675 for (i = 0; i < pe_def_file->num_exports; i++)
1676 {
1677 len = strlen (pe_def_file->exports[i].internal_name);
1678 if (buflen < len + 2)
1679 buflen = len + 2;
1680 }
1682 buf = xmalloc (buflen);
1684 for (i = 0; i < pe_def_file->num_exports; i++)
1685 {
1686 struct bfd_link_hash_entry *h;
1688 sprintf (buf, "%s%s", U (""),
1689 pe_def_file->exports[i].internal_name);
1691 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1692 if (h == (struct bfd_link_hash_entry *) NULL)
1693 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1694 if (h->type == bfd_link_hash_new)
1695 {
1696 h->type = bfd_link_hash_undefined;
1697 h->u.undef.abfd = NULL;
1698 bfd_link_add_undef (link_info.hash, h);
1699 }
1700 }
1701 free (buf);
1703 /* def_file_print (stdout, pe_def_file); */
1704 if (pe_def_file->is_dll == 1)
1705 link_info.shared = 1;
1707 if (pe_def_file->base_address != (bfd_vma)(-1))
1708 {
1709 pe.ImageBase
1710 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1711 = init[IMAGEBASEOFF].value
1712 = pe_def_file->base_address;
1713 init[IMAGEBASEOFF].inited = 1;
1714 if (image_base_statement)
1715 image_base_statement->exp = exp_assop ('=', "__image_base__",
1716 exp_intop (pe.ImageBase));
1717 }
1719 if (pe_def_file->stack_reserve != -1
1720 && ! saw_option ("__size_of_stack_reserve__"))
1721 {
1722 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1723 if (pe_def_file->stack_commit != -1)
1724 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1725 }
1726 if (pe_def_file->heap_reserve != -1
1727 && ! saw_option ("__size_of_heap_reserve__"))
1728 {
1729 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1730 if (pe_def_file->heap_commit != -1)
1731 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1732 }
1733 return TRUE;
1734 }
1735 }
1736 #endif
1737 return FALSE;
1738 }
1740 static bfd_boolean
1741 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1742 {
1743 #ifdef DLL_SUPPORT
1744 #ifdef TARGET_IS_i386pe
1745 pe_dll_id_target ("pei-i386");
1746 #endif
1747 #ifdef TARGET_IS_shpe
1748 pe_dll_id_target ("pei-shl");
1749 #endif
1750 #ifdef TARGET_IS_mipspe
1751 pe_dll_id_target ("pei-mips");
1752 #endif
1753 #ifdef TARGET_IS_armpe
1754 pe_dll_id_target ("pei-arm-little");
1755 #endif
1756 #ifdef TARGET_IS_arm_epoc_pe
1757 pe_dll_id_target ("epoc-pei-arm-little");
1758 #endif
1759 #ifdef TARGET_IS_arm_wince_pe
1760 pe_dll_id_target ("pei-arm-wince-little");
1761 #endif
1762 if (pe_bfd_is_dll (entry->the_bfd))
1763 return pe_implied_import_dll (entry->filename);
1764 #endif
1765 return FALSE;
1766 }
1768 static void
1769 gld_${EMULATION_NAME}_finish (void)
1770 {
1771 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1772 struct bfd_link_hash_entry * h;
1774 if (thumb_entry_symbol != NULL)
1775 {
1776 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1777 FALSE, FALSE, TRUE);
1779 if (h != (struct bfd_link_hash_entry *) NULL
1780 && (h->type == bfd_link_hash_defined
1781 || h->type == bfd_link_hash_defweak)
1782 && h->u.def.section->output_section != NULL)
1783 {
1784 static char buffer[32];
1785 bfd_vma val;
1787 /* Special procesing is required for a Thumb entry symbol. The
1788 bottom bit of its address must be set. */
1789 val = (h->u.def.value
1790 + bfd_get_section_vma (link_info.output_bfd,
1791 h->u.def.section->output_section)
1792 + h->u.def.section->output_offset);
1794 val |= 1;
1796 /* Now convert this value into a string and store it in entry_symbol
1797 where the lang_finish() function will pick it up. */
1798 buffer[0] = '0';
1799 buffer[1] = 'x';
1801 sprintf_vma (buffer + 2, val);
1803 if (entry_symbol.name != NULL && entry_from_cmdline)
1804 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1805 thumb_entry_symbol, entry_symbol.name);
1806 entry_symbol.name = buffer;
1807 }
1808 else
1809 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
1810 }
1811 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
1813 finish_default ();
1815 #ifdef DLL_SUPPORT
1816 if (link_info.shared
1817 #if !defined(TARGET_IS_shpe) && !defined(TARGET_IS_mipspe)
1818 || (!link_info.relocatable && pe_def_file->num_exports != 0)
1819 #endif
1820 )
1821 {
1822 pe_dll_fill_sections (link_info.output_bfd, &link_info);
1823 if (pe_implib_filename)
1824 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info);
1825 }
1826 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1827 /* ARM doesn't need relocs. */
1828 else
1829 {
1830 pe_exe_fill_sections (link_info.output_bfd, &link_info);
1831 }
1832 #endif
1834 if (pe_out_def_filename)
1835 pe_dll_generate_def_file (pe_out_def_filename);
1836 #endif /* DLL_SUPPORT */
1838 /* I don't know where .idata gets set as code, but it shouldn't be. */
1839 {
1840 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1842 if (asec)
1843 {
1844 asec->flags &= ~SEC_CODE;
1845 asec->flags |= SEC_DATA;
1846 }
1847 }
1848 }
1850 \f
1851 /* Place an orphan section.
1853 We use this to put sections in a reasonable place in the file, and
1854 to ensure that they are aligned as required.
1856 We handle grouped sections here as well. A section named .foo\$nn
1857 goes into the output section .foo. All grouped sections are sorted
1858 by name.
1860 Grouped sections for the default sections are handled by the
1861 default linker script using wildcards, and are sorted by
1862 sort_sections. */
1864 static lang_output_section_statement_type *
1865 gld_${EMULATION_NAME}_place_orphan (asection *s,
1866 const char *secname,
1867 int constraint)
1868 {
1869 const char *orig_secname = secname;
1870 char *dollar = NULL;
1871 lang_output_section_statement_type *os;
1872 lang_statement_list_type add_child;
1873 lang_output_section_statement_type *match_by_name = NULL;
1874 lang_statement_union_type **pl;
1876 /* Look through the script to see where to place this section. */
1877 if (!link_info.relocatable
1878 && (dollar = strchr (secname, '\$')) != NULL)
1879 {
1880 size_t len = dollar - secname;
1881 char *newname = xmalloc (len + 1);
1882 memcpy (newname, secname, len);
1883 newname[len] = '\0';
1884 secname = newname;
1885 }
1887 lang_list_init (&add_child);
1889 os = NULL;
1890 if (constraint == 0)
1891 for (os = lang_output_section_find (secname);
1892 os != NULL;
1893 os = next_matching_output_section_statement (os, 0))
1894 {
1895 /* If we don't match an existing output section, tell
1896 lang_insert_orphan to create a new output section. */
1897 constraint = SPECIAL;
1899 if (os->bfd_section != NULL
1900 && (os->bfd_section->flags == 0
1901 || ((s->flags ^ os->bfd_section->flags)
1902 & (SEC_LOAD | SEC_ALLOC)) == 0))
1903 {
1904 /* We already have an output section statement with this
1905 name, and its bfd section has compatible flags.
1906 If the section already exists but does not have any flags set,
1907 then it has been created by the linker, probably as a result of
1908 a --section-start command line switch. */
1909 lang_add_section (&add_child, s, os);
1910 break;
1911 }
1913 /* Save unused output sections in case we can match them
1914 against orphans later. */
1915 if (os->bfd_section == NULL)
1916 match_by_name = os;
1917 }
1919 /* If we didn't match an active output section, see if we matched an
1920 unused one and use that. */
1921 if (os == NULL && match_by_name)
1922 {
1923 lang_add_section (&match_by_name->children, s, match_by_name);
1924 return match_by_name;
1925 }
1927 if (os == NULL)
1928 {
1929 static struct orphan_save hold[] =
1930 {
1931 { ".text",
1932 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1933 0, 0, 0, 0 },
1934 { ".rdata",
1935 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1936 0, 0, 0, 0 },
1937 { ".data",
1938 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1939 0, 0, 0, 0 },
1940 { ".bss",
1941 SEC_ALLOC,
1942 0, 0, 0, 0 }
1943 };
1944 enum orphan_save_index
1945 {
1946 orphan_text = 0,
1947 orphan_rodata,
1948 orphan_data,
1949 orphan_bss
1950 };
1951 static int orphan_init_done = 0;
1952 struct orphan_save *place;
1953 lang_output_section_statement_type *after;
1954 etree_type *address;
1956 if (!orphan_init_done)
1957 {
1958 struct orphan_save *ho;
1959 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1960 if (ho->name != NULL)
1961 {
1962 ho->os = lang_output_section_find (ho->name);
1963 if (ho->os != NULL && ho->os->flags == 0)
1964 ho->os->flags = ho->flags;
1965 }
1966 orphan_init_done = 1;
1967 }
1969 /* Try to put the new output section in a reasonable place based
1970 on the section name and section flags. */
1972 place = NULL;
1973 if ((s->flags & SEC_ALLOC) == 0)
1974 ;
1975 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1976 place = &hold[orphan_bss];
1977 else if ((s->flags & SEC_READONLY) == 0)
1978 place = &hold[orphan_data];
1979 else if ((s->flags & SEC_CODE) == 0)
1980 place = &hold[orphan_rodata];
1981 else
1982 place = &hold[orphan_text];
1984 after = NULL;
1985 if (place != NULL)
1986 {
1987 if (place->os == NULL)
1988 place->os = lang_output_section_find (place->name);
1989 after = place->os;
1990 if (after == NULL)
1991 after = lang_output_section_find_by_flags (s, &place->os, NULL);
1992 if (after == NULL)
1993 /* *ABS* is always the first output section statement. */
1994 after = (&lang_output_section_statement.head
1995 ->output_section_statement);
1996 }
1998 /* All sections in an executable must be aligned to a page boundary. */
1999 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2000 os = lang_insert_orphan (s, secname, constraint, after, place, address,
2001 &add_child);
2002 }
2004 /* If the section name has a '\$', sort it with the other '\$'
2005 sections. */
2006 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2007 {
2008 lang_input_section_type *ls;
2009 const char *lname;
2011 if ((*pl)->header.type != lang_input_section_enum)
2012 continue;
2014 ls = &(*pl)->input_section;
2016 lname = bfd_get_section_name (ls->section->owner, ls->section);
2017 if (strchr (lname, '\$') != NULL
2018 && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2019 break;
2020 }
2022 if (add_child.head != NULL)
2023 {
2024 *add_child.tail = *pl;
2025 *pl = add_child.head;
2026 }
2028 return os;
2029 }
2031 static bfd_boolean
2032 gld_${EMULATION_NAME}_open_dynamic_archive
2033 (const char *arch ATTRIBUTE_UNUSED,
2034 search_dirs_type *search,
2035 lang_input_statement_type *entry)
2036 {
2037 static const struct
2038 {
2039 const char * format;
2040 bfd_boolean use_prefix;
2041 }
2042 libname_fmt [] =
2043 {
2044 /* Preferred explicit import library for dll's. */
2045 { "lib%s.dll.a", FALSE },
2046 /* Alternate explicit import library for dll's. */
2047 { "%s.dll.a", FALSE },
2048 /* "libfoo.a" could be either an import lib or a static lib.
2049 For backwards compatibility, libfoo.a needs to precede
2050 libfoo.dll and foo.dll in the search. */
2051 { "lib%s.a", FALSE },
2052 /* The 'native' spelling of an import lib name is "foo.lib". */
2053 { "%s.lib", FALSE },
2054 #ifdef DLL_SUPPORT
2055 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
2056 { "%s%s.dll", TRUE },
2057 #endif
2058 /* Try "libfoo.dll" (default preferred dll name). */
2059 { "lib%s.dll", FALSE },
2060 /* Finally try 'native' dll name "foo.dll". */
2061 { "%s.dll", FALSE },
2062 /* Note: If adding more formats to this table, make sure to check to
2063 see if their length is longer than libname_fmt[0].format, and if
2064 so, update the call to xmalloc() below. */
2065 { NULL, FALSE }
2066 };
2067 static unsigned int format_max_len = 0;
2068 const char * filename;
2069 char * full_string;
2070 char * base_string;
2071 unsigned int i;
2074 if (! entry->is_archive)
2075 return FALSE;
2077 filename = entry->filename;
2079 if (format_max_len == 0)
2080 /* We need to allow space in the memory that we are going to allocate
2081 for the characters in the format string. Since the format array is
2082 static we only need to calculate this information once. In theory
2083 this value could also be computed statically, but this introduces
2084 the possibility for a discrepancy and hence a possible memory
2085 corruption. The lengths we compute here will be too long because
2086 they will include any formating characters (%s) in the strings, but
2087 this will not matter. */
2088 for (i = 0; libname_fmt[i].format; i++)
2089 if (format_max_len < strlen (libname_fmt[i].format))
2090 format_max_len = strlen (libname_fmt[i].format);
2092 full_string = xmalloc (strlen (search->name)
2093 + strlen (filename)
2094 + format_max_len
2095 #ifdef DLL_SUPPORT
2096 + (pe_dll_search_prefix
2097 ? strlen (pe_dll_search_prefix) : 0)
2098 #endif
2099 /* Allow for the terminating NUL and for the path
2100 separator character that is inserted between
2101 search->name and the start of the format string. */
2102 + 2);
2104 sprintf (full_string, "%s/", search->name);
2105 base_string = full_string + strlen (full_string);
2107 for (i = 0; libname_fmt[i].format; i++)
2108 {
2109 #ifdef DLL_SUPPORT
2110 if (libname_fmt[i].use_prefix)
2111 {
2112 if (!pe_dll_search_prefix)
2113 continue;
2114 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
2115 }
2116 else
2117 #endif
2118 sprintf (base_string, libname_fmt[i].format, filename);
2120 if (ldfile_try_open_bfd (full_string, entry))
2121 break;
2122 }
2124 if (!libname_fmt[i].format)
2125 {
2126 free (full_string);
2127 return FALSE;
2128 }
2130 entry->filename = full_string;
2132 return TRUE;
2133 }
2135 static int
2136 gld_${EMULATION_NAME}_find_potential_libraries
2137 (char *name, lang_input_statement_type *entry)
2138 {
2139 return ldfile_open_file_search (name, entry, "", ".lib");
2140 }
2141 \f
2142 static char *
2143 gld_${EMULATION_NAME}_get_script (int *isfile)
2144 EOF
2145 # Scripts compiled in.
2146 # sed commands to quote an ld script as a C string.
2147 sc="-f stringify.sed"
2149 fragment <<EOF
2150 {
2151 *isfile = 0;
2153 if (link_info.relocatable && config.build_constructors)
2154 return
2155 EOF
2156 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2157 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
2158 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2159 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2160 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2161 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2162 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2163 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2164 echo ' ; else if (link_info.pei386_auto_import == 1) return' >> e${EMULATION_NAME}.c
2165 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
2166 fi
2167 echo ' ; else return' >> e${EMULATION_NAME}.c
2168 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2169 echo '; }' >> e${EMULATION_NAME}.c
2171 fragment <<EOF
2174 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2175 {
2176 gld_${EMULATION_NAME}_before_parse,
2177 syslib_default,
2178 hll_default,
2179 gld_${EMULATION_NAME}_after_parse,
2180 gld_${EMULATION_NAME}_after_open,
2181 after_allocation_default,
2182 set_output_arch_default,
2183 ldemul_default_target,
2184 gld_${EMULATION_NAME}_before_allocation,
2185 gld_${EMULATION_NAME}_get_script,
2186 "${EMULATION_NAME}",
2187 "${OUTPUT_FORMAT}",
2188 gld_${EMULATION_NAME}_finish,
2189 NULL, /* Create output section statements. */
2190 gld_${EMULATION_NAME}_open_dynamic_archive,
2191 gld_${EMULATION_NAME}_place_orphan,
2192 gld_${EMULATION_NAME}_set_symbols,
2193 NULL, /* parse_args */
2194 gld${EMULATION_NAME}_add_options,
2195 gld${EMULATION_NAME}_handle_option,
2196 gld_${EMULATION_NAME}_unrecognized_file,
2197 gld_${EMULATION_NAME}_list_options,
2198 gld_${EMULATION_NAME}_recognized_file,
2199 gld_${EMULATION_NAME}_find_potential_libraries,
2200 NULL /* new_vers_pattern. */
2201 };
2202 EOF