[testsuite] Disable Ctrl-V use for mingw hosts.
[deliverable/binutils-gdb.git] / ld / emultempl / pe.em
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 (C) 1995-2014 Free Software Foundation, Inc.
12
13 This file is part of the GNU Binutils.
14
15 This program is free software; you can redistribute it and/or modify
16 it under the terms of the GNU General Public License as published by
17 the Free Software Foundation; either version 3 of the License, or
18 (at your option) any later version.
19
20 This program is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
24
25 You should have received a copy of the GNU General Public License
26 along with this program; if not, write to the Free Software
27 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
28 MA 02110-1301, USA. */
29
30
31 /* For WINDOWS_NT */
32 /* The original file generated returned different default scripts depending
33 on whether certain switches were set, but these switches pertain to the
34 Linux system and that particular version of coff. In the NT case, we
35 only determine if the subsystem is console or windows in order to select
36 the correct entry point by default. */
37
38 #define TARGET_IS_${EMULATION_NAME}
39
40 /* Do this before including bfd.h, so we prototype the right functions. */
41
42 #if defined(TARGET_IS_armpe) \
43 || defined(TARGET_IS_arm_epoc_pe) \
44 || defined(TARGET_IS_arm_wince_pe)
45 #define bfd_arm_allocate_interworking_sections \
46 bfd_${EMULATION_NAME}_allocate_interworking_sections
47 #define bfd_arm_get_bfd_for_interworking \
48 bfd_${EMULATION_NAME}_get_bfd_for_interworking
49 #define bfd_arm_process_before_allocation \
50 bfd_${EMULATION_NAME}_process_before_allocation
51 #endif
52
53 #include "sysdep.h"
54 #include "bfd.h"
55 #include "bfdlink.h"
56 #include "getopt.h"
57 #include "libiberty.h"
58 #include "filenames.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"
70
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"
75
76 /* FIXME: This is a BFD internal header file, and we should not be
77 using it here. */
78 #include "../bfd/libcoff.h"
79
80 #include "deffile.h"
81 #include "pe-dll.h"
82 #include "safe-ctype.h"
83
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
92
93 #if defined(TARGET_IS_i386pe) \
94 || defined(TARGET_IS_shpe) \
95 || defined(TARGET_IS_armpe) \
96 || defined(TARGET_IS_arm_epoc_pe) \
97 || defined(TARGET_IS_arm_wince_pe)
98 #define DLL_SUPPORT
99 #endif
100
101 #if defined(TARGET_IS_i386pe)
102 #define DEFAULT_PSEUDO_RELOC_VERSION 2
103 #else
104 #define DEFAULT_PSEUDO_RELOC_VERSION 1
105 #endif
106
107 #if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
108 #define PE_DEF_SUBSYSTEM 3
109 #else
110 #undef NT_EXE_IMAGE_BASE
111 #undef PE_DEF_SECTION_ALIGNMENT
112 #undef PE_DEF_FILE_ALIGNMENT
113 #define NT_EXE_IMAGE_BASE 0x00010000
114
115 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
116 #define PE_DEF_SECTION_ALIGNMENT 0x00001000
117 #define PE_DEF_SUBSYSTEM 9
118 #else
119 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
120 #define PE_DEF_SUBSYSTEM 2
121 #endif
122 #define PE_DEF_FILE_ALIGNMENT 0x00000200
123 #endif
124
125 static struct internal_extra_pe_aouthdr pe;
126 static int dll;
127 static int pe_subsystem = ${SUBSYSTEM};
128 static flagword real_flags = 0;
129 static int support_old_code = 0;
130 static char * thumb_entry_symbol = NULL;
131 static lang_assignment_statement_type *image_base_statement = 0;
132 static unsigned short pe_dll_characteristics = 0;
133 static bfd_boolean insert_timestamp = FALSE;
134
135 #ifdef DLL_SUPPORT
136 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
137 static char *pe_out_def_filename = NULL;
138 static char *pe_implib_filename = NULL;
139 static int pe_enable_auto_image_base = 0;
140 static unsigned long pe_auto_image_base = 0x61500000;
141 static char *pe_dll_search_prefix = NULL;
142 #endif
143
144 extern const char *output_filename;
145
146 static int is_underscoring (void)
147 {
148 int u = 0;
149 if (pe_leading_underscore != -1)
150 return pe_leading_underscore;
151 if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
152 bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
153
154 if (u == -1)
155 abort ();
156 pe_leading_underscore = (u != 0 ? 1 : 0);
157 return pe_leading_underscore;
158 }
159
160 static void
161 gld_${EMULATION_NAME}_before_parse (void)
162 {
163 is_underscoring ();
164 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
165 output_filename = "${EXECUTABLE_NAME:-a.exe}";
166 #ifdef DLL_SUPPORT
167 input_flags.dynamic = TRUE;
168 config.has_shared = 1;
169 EOF
170
171 # Cygwin no longer wants these noisy warnings. Other PE
172 # targets might like to consider adding themselves here.
173 # See also the mail thread starting here for the reason why
174 # merge_rdata defaults to 0 for cygwin:
175 # http://cygwin.com/ml/cygwin-apps/2013-04/msg00187.html
176 case ${target} in
177 *-*-cygwin*)
178 default_auto_import=1
179 default_merge_rdata=0
180 ;;
181 i[3-7]86-*-mingw* | x86_64-*-mingw*)
182 default_auto_import=1
183 default_merge_rdata=0
184 ;;
185 *)
186 default_auto_import=-1
187 default_merge_rdata=1
188 ;;
189 esac
190
191 fragment <<EOF
192 link_info.pei386_auto_import = ${default_auto_import};
193 /* Use by default version. */
194 link_info.pei386_runtime_pseudo_reloc = DEFAULT_PSEUDO_RELOC_VERSION;
195 #endif
196 }
197 \f
198 /* Indicates if RDATA shall be merged into DATA when pseudo-relocation
199 version 2 is used and auto-import is enabled. */
200 #define MERGE_RDATA_V2 ${default_merge_rdata}
201
202 /* PE format extra command line options. */
203
204 /* Used for setting flags in the PE header. */
205 #define OPTION_BASE_FILE (300 + 1)
206 #define OPTION_DLL (OPTION_BASE_FILE + 1)
207 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
208 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
209 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
210 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
211 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
212 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
213 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
214 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
215 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
216 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
217 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
218 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
219 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
220 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
221 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
222 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
223 #define OPTION_EXCLUDE_ALL_SYMBOLS (OPTION_EXCLUDE_SYMBOLS + 1)
224 #define OPTION_KILL_ATS (OPTION_EXCLUDE_ALL_SYMBOLS + 1)
225 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
226 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
227 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
228 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
229 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
230 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
231 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
232 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
233 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
234 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
235 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
236 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
237 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
238 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
239 #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
240 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
241 (OPTION_EXCLUDE_LIBS + 1)
242 #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
243 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
244 #define OPTION_LARGE_ADDRESS_AWARE (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
245 #define OPTION_DISABLE_LARGE_ADDRESS_AWARE \
246 (OPTION_LARGE_ADDRESS_AWARE + 1)
247 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
248 (OPTION_DISABLE_LARGE_ADDRESS_AWARE + 1)
249 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
250 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
251 #define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
252 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
253 #define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
254 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
255 #define OPTION_NO_LEADING_UNDERSCORE (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
256 #define OPTION_LEADING_UNDERSCORE (OPTION_NO_LEADING_UNDERSCORE + 1)
257 #define OPTION_ENABLE_LONG_SECTION_NAMES \
258 (OPTION_LEADING_UNDERSCORE + 1)
259 #define OPTION_DISABLE_LONG_SECTION_NAMES \
260 (OPTION_ENABLE_LONG_SECTION_NAMES + 1)
261 /* DLLCharacteristics flags. */
262 #define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1)
263 #define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1)
264 #define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1)
265 #define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1)
266 #define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1)
267 #define OPTION_NO_BIND (OPTION_NO_SEH + 1)
268 #define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1)
269 #define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1)
270 /* Determinism. */
271 #define OPTION_INSERT_TIMESTAMP (OPTION_TERMINAL_SERVER_AWARE + 1)
272
273 static void
274 gld${EMULATION_NAME}_add_options
275 (int ns ATTRIBUTE_UNUSED,
276 char **shortopts ATTRIBUTE_UNUSED,
277 int nl,
278 struct option **longopts,
279 int nrl ATTRIBUTE_UNUSED,
280 struct option **really_longopts ATTRIBUTE_UNUSED)
281 {
282 static const struct option xtra_long[] =
283 {
284 /* PE options. */
285 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
286 {"dll", no_argument, NULL, OPTION_DLL},
287 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
288 {"heap", required_argument, NULL, OPTION_HEAP},
289 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
290 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
291 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
292 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
293 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
294 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
295 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
296 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
297 {"stack", required_argument, NULL, OPTION_STACK},
298 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
299 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
300 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
301 {"use-nul-prefixed-import-tables", no_argument, NULL,
302 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
303 {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
304 {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
305 {"insert-timestamp", no_argument, NULL, OPTION_INSERT_TIMESTAMP},
306 #ifdef DLL_SUPPORT
307 /* getopt allows abbreviations, so we do this to stop it
308 from treating -o as an abbreviation for this option. */
309 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
310 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
311 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
312 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
313 {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
314 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
315 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
316 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
317 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
318 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
319 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
320 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
321 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
322 /* getopt() allows abbreviations, so we do this to stop it from
323 treating -c as an abbreviation for these --compat-implib. */
324 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
325 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
326 {"enable-auto-image-base", optional_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
327 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
328 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
329 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
330 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
331 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
332 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
333 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
334 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
335 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
336 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
337 #endif
338 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
339 {"disable-large-address-aware", no_argument, NULL, OPTION_DISABLE_LARGE_ADDRESS_AWARE},
340 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
341 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
342 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
343 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
344 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
345 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
346 {"no-seh", no_argument, NULL, OPTION_NO_SEH},
347 {"no-bind", no_argument, NULL, OPTION_NO_BIND},
348 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
349 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
350 {NULL, no_argument, NULL, 0}
351 };
352
353 *longopts
354 = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
355 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
356 }
357
358 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
359 parameters which may be input from the command line. */
360
361 typedef struct
362 {
363 void *ptr;
364 int size;
365 int value;
366 char *symbol;
367 int inited;
368 /* FALSE for an assembly level symbol and TRUE for a C visible symbol.
369 C visible symbols can be prefixed by underscore dependent to target's
370 settings. */
371 bfd_boolean is_c_symbol;
372 } definfo;
373
374 /* Get symbol name dependent to kind and C visible state of
375 underscore. */
376 #define GET_INIT_SYMBOL_NAME(IDX) \
377 (init[(IDX)].symbol \
378 + ((init[(IDX)].is_c_symbol == FALSE || (is_underscoring () != 0)) ? 0 : 1))
379
380 /* Decorates the C visible symbol by underscore, if target requires. */
381 #define U(CSTR) \
382 ((is_underscoring () == 0) ? CSTR : "_" CSTR)
383
384 /* Get size of constant string for a possible underscore prefixed
385 C visible symbol. */
386 #define U_SIZE(CSTR) \
387 (sizeof (CSTR) + (is_underscoring () == 0 ? 0 : 1))
388
389 #define D(field,symbol,def,usc) {&pe.field,sizeof(pe.field), def, symbol, 0, usc}
390
391 static definfo init[] =
392 {
393 /* imagebase must be first */
394 #define IMAGEBASEOFF 0
395 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE),
396 #define DLLOFF 1
397 {&dll, sizeof(dll), 0, "__dll__", 0, FALSE},
398 #define MSIMAGEBASEOFF 2
399 D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE),
400 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE),
401 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE),
402 D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE),
403 D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE),
404 D(MajorImageVersion,"__major_image_version__", 1, FALSE),
405 D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
406 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
407 D(MajorSubsystemVersion,"__major_subsystem_version__", 3, FALSE),
408 #else
409 D(MajorSubsystemVersion,"__major_subsystem_version__", 4, FALSE),
410 #endif
411 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0, FALSE),
412 D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE),
413 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE),
414 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE),
415 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE),
416 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE),
417 D(LoaderFlags,"__loader_flags__", 0x0, FALSE),
418 D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE),
419 { NULL, 0, 0, NULL, 0 , FALSE}
420 };
421
422
423 static void
424 gld_${EMULATION_NAME}_list_options (FILE *file)
425 {
426 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
427 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
428 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
429 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
430 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
431 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
432 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
433 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
434 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
435 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
436 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
437 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
438 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
439 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
440 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
441 fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n"));
442 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
443 fprintf (file, _(" --insert-timestamp Use a real timestamp rather than zero.\n"));
444 fprintf (file, _(" This makes binaries non-deterministic\n"));
445 #ifdef DLL_SUPPORT
446 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
447 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
448 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
449 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
450 fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n"));
451 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
452 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
453 fprintf (file, _(" Exclude objects, archive members from auto\n"));
454 fprintf (file, _(" export, place into import library instead.\n"));
455 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
456 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
457 fprintf (file, _(" --out-implib <file> Generate import library\n"));
458 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
459 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports\n"));
460 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
461 create __imp_<SYMBOL> as well.\n"));
462 fprintf (file, _(" --enable-auto-image-base[=<address>] Automatically choose image base for DLLs\n\
463 (optionally starting with address) unless\n\
464 specifically set with --image-base\n"));
465 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
466 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
467 an importlib, use <string><basename>.dll\n\
468 in preference to lib<basename>.dll \n"));
469 fprintf (file, _(" --enable-auto-import Do sophisticated linking of _sym to\n\
470 __imp_sym for DATA references\n"));
471 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
472 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
473 adding pseudo-relocations resolved at\n\
474 runtime.\n"));
475 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
476 auto-imported DATA.\n"));
477 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
478 or linking to DLLs (esp. auto-import)\n"));
479 #endif
480 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
481 greater than 2 gigabytes\n"));
482 fprintf (file, _(" --disable-large-address-aware Executable does not support virtual\n\
483 addresses greater than 2 gigabytes\n"));
484 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
485 executable image files\n"));
486 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
487 in object files\n"));
488 fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\
489 address space layout randomization (ASLR)\n"));
490 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
491 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
492 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
493 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
494 be called in this image\n"));
495 fprintf (file, _(" --no-bind Do not bind this image\n"));
496 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
497 fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
498 }
499
500
501 static void
502 set_pe_name (char *name, long val)
503 {
504 int i;
505 is_underscoring ();
506
507 /* Find the name and set it. */
508 for (i = 0; init[i].ptr; i++)
509 {
510 if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
511 {
512 init[i].value = val;
513 init[i].inited = 1;
514 if (strcmp (name,"__image_base__") == 0)
515 set_pe_name (U ("__ImageBase"), val);
516 return;
517 }
518 }
519 abort ();
520 }
521
522 static void
523 set_entry_point (void)
524 {
525 const char *entry;
526 const char *initial_symbol_char;
527 int i;
528
529 static const struct
530 {
531 const int value;
532 const char *entry;
533 }
534 v[] =
535 {
536 { 1, "NtProcessStartup" },
537 { 2, "WinMainCRTStartup" },
538 { 3, "mainCRTStartup" },
539 { 7, "__PosixProcessStartup"},
540 { 9, "WinMainCRTStartup" },
541 {14, "mainCRTStartup" },
542 { 0, NULL }
543 };
544
545 /* Entry point name for arbitrary subsystem numbers. */
546 static const char default_entry[] = "mainCRTStartup";
547
548 if (link_info.shared || dll)
549 {
550 #if defined (TARGET_IS_i386pe)
551 entry = "DllMainCRTStartup@12";
552 #else
553 entry = "DllMainCRTStartup";
554 #endif
555 }
556 else
557 {
558
559 for (i = 0; v[i].entry; i++)
560 if (v[i].value == pe_subsystem)
561 break;
562
563 /* If no match, use the default. */
564 if (v[i].entry != NULL)
565 entry = v[i].entry;
566 else
567 entry = default_entry;
568 }
569
570 initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
571
572 if (*initial_symbol_char != '\0')
573 {
574 char *alc_entry;
575
576 /* lang_default_entry expects its argument to be permanently
577 allocated, so we don't free this string. */
578 alc_entry = xmalloc (strlen (initial_symbol_char)
579 + strlen (entry)
580 + 1);
581 strcpy (alc_entry, initial_symbol_char);
582 strcat (alc_entry, entry);
583 entry = alc_entry;
584 }
585
586 lang_default_entry (entry);
587 }
588
589 static void
590 set_pe_subsystem (void)
591 {
592 const char *sver;
593 char *end;
594 int len;
595 int i;
596 unsigned long temp_subsystem;
597 static const struct
598 {
599 const char *name;
600 const int value;
601 }
602 v[] =
603 {
604 { "native", 1},
605 { "windows", 2},
606 { "console", 3},
607 { "posix", 7},
608 { "wince", 9},
609 { "xbox", 14},
610 { NULL, 0 }
611 };
612
613 /* Check for the presence of a version number. */
614 sver = strchr (optarg, ':');
615 if (sver == NULL)
616 len = strlen (optarg);
617 else
618 {
619 len = sver - optarg;
620 set_pe_name ("__major_subsystem_version__",
621 strtoul (sver + 1, &end, 0));
622 if (*end == '.')
623 set_pe_name ("__minor_subsystem_version__",
624 strtoul (end + 1, &end, 0));
625 if (*end != '\0')
626 einfo (_("%P: warning: bad version number in -subsystem option\n"));
627 }
628
629 /* Check for numeric subsystem. */
630 temp_subsystem = strtoul (optarg, & end, 0);
631 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
632 {
633 /* Search list for a numeric match to use its entry point. */
634 for (i = 0; v[i].name; i++)
635 if (v[i].value == (int) temp_subsystem)
636 break;
637
638 /* Use this subsystem. */
639 pe_subsystem = (int) temp_subsystem;
640 }
641 else
642 {
643 /* Search for subsystem by name. */
644 for (i = 0; v[i].name; i++)
645 if (strncmp (optarg, v[i].name, len) == 0
646 && v[i].name[len] == '\0')
647 break;
648
649 if (v[i].name == NULL)
650 {
651 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
652 return;
653 }
654
655 pe_subsystem = v[i].value;
656 }
657
658 set_pe_name ("__subsystem__", pe_subsystem);
659
660 return;
661 }
662
663
664 static void
665 set_pe_value (char *name)
666 {
667 char *end;
668
669 set_pe_name (name, strtoul (optarg, &end, 0));
670
671 if (end == optarg)
672 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
673
674 optarg = end;
675 }
676
677
678 static void
679 set_pe_stack_heap (char *resname, char *comname)
680 {
681 set_pe_value (resname);
682
683 if (*optarg == ',')
684 {
685 optarg++;
686 set_pe_value (comname);
687 }
688 else if (*optarg)
689 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
690 }
691
692
693 static bfd_boolean
694 gld${EMULATION_NAME}_handle_option (int optc)
695 {
696 switch (optc)
697 {
698 default:
699 return FALSE;
700
701 case OPTION_BASE_FILE:
702 link_info.base_file = fopen (optarg, FOPEN_WB);
703 if (link_info.base_file == NULL)
704 einfo (_("%F%P: cannot open base file %s\n"), optarg);
705 break;
706
707 /* PE options. */
708 case OPTION_HEAP:
709 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
710 break;
711 case OPTION_STACK:
712 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
713 break;
714 case OPTION_SUBSYSTEM:
715 set_pe_subsystem ();
716 break;
717 case OPTION_MAJOR_OS_VERSION:
718 set_pe_value ("__major_os_version__");
719 break;
720 case OPTION_MINOR_OS_VERSION:
721 set_pe_value ("__minor_os_version__");
722 break;
723 case OPTION_MAJOR_SUBSYSTEM_VERSION:
724 set_pe_value ("__major_subsystem_version__");
725 break;
726 case OPTION_MINOR_SUBSYSTEM_VERSION:
727 set_pe_value ("__minor_subsystem_version__");
728 break;
729 case OPTION_MAJOR_IMAGE_VERSION:
730 set_pe_value ("__major_image_version__");
731 break;
732 case OPTION_MINOR_IMAGE_VERSION:
733 set_pe_value ("__minor_image_version__");
734 break;
735 case OPTION_FILE_ALIGNMENT:
736 set_pe_value ("__file_alignment__");
737 break;
738 case OPTION_SECTION_ALIGNMENT:
739 set_pe_value ("__section_alignment__");
740 break;
741 case OPTION_DLL:
742 set_pe_name ("__dll__", 1);
743 break;
744 case OPTION_IMAGE_BASE:
745 set_pe_value ("__image_base__");
746 break;
747 case OPTION_SUPPORT_OLD_CODE:
748 support_old_code = 1;
749 break;
750 case OPTION_THUMB_ENTRY:
751 thumb_entry_symbol = optarg;
752 break;
753 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
754 pe_use_nul_prefixed_import_tables = TRUE;
755 break;
756 case OPTION_NO_LEADING_UNDERSCORE:
757 pe_leading_underscore = 0;
758 break;
759 case OPTION_LEADING_UNDERSCORE:
760 pe_leading_underscore = 1;
761 break;
762 case OPTION_INSERT_TIMESTAMP:
763 insert_timestamp = TRUE;
764 break;
765 #ifdef DLL_SUPPORT
766 case OPTION_OUT_DEF:
767 pe_out_def_filename = xstrdup (optarg);
768 break;
769 case OPTION_EXPORT_ALL:
770 pe_dll_export_everything = 1;
771 break;
772 case OPTION_EXCLUDE_SYMBOLS:
773 pe_dll_add_excludes (optarg, EXCLUDESYMS);
774 break;
775 case OPTION_EXCLUDE_ALL_SYMBOLS:
776 pe_dll_exclude_all_symbols = 1;
777 break;
778 case OPTION_EXCLUDE_LIBS:
779 pe_dll_add_excludes (optarg, EXCLUDELIBS);
780 break;
781 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
782 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
783 break;
784 case OPTION_KILL_ATS:
785 pe_dll_kill_ats = 1;
786 break;
787 case OPTION_STDCALL_ALIASES:
788 pe_dll_stdcall_aliases = 1;
789 break;
790 case OPTION_ENABLE_STDCALL_FIXUP:
791 pe_enable_stdcall_fixup = 1;
792 break;
793 case OPTION_DISABLE_STDCALL_FIXUP:
794 pe_enable_stdcall_fixup = 0;
795 break;
796 case OPTION_IMPLIB_FILENAME:
797 pe_implib_filename = xstrdup (optarg);
798 break;
799 case OPTION_WARN_DUPLICATE_EXPORTS:
800 pe_dll_warn_dup_exports = 1;
801 break;
802 case OPTION_IMP_COMPAT:
803 pe_dll_compat_implib = 1;
804 break;
805 case OPTION_ENABLE_AUTO_IMAGE_BASE:
806 pe_enable_auto_image_base = 1;
807 if (optarg && *optarg)
808 {
809 char *end;
810 pe_auto_image_base = strtoul(optarg, &end, 0);
811 /* XXX should check that we actually parsed something */
812 }
813 break;
814 case OPTION_DISABLE_AUTO_IMAGE_BASE:
815 pe_enable_auto_image_base = 0;
816 break;
817 case OPTION_DLL_SEARCH_PREFIX:
818 pe_dll_search_prefix = xstrdup (optarg);
819 break;
820 case OPTION_NO_DEFAULT_EXCLUDES:
821 pe_dll_do_default_excludes = 0;
822 break;
823 case OPTION_DLL_ENABLE_AUTO_IMPORT:
824 link_info.pei386_auto_import = 1;
825 break;
826 case OPTION_DLL_DISABLE_AUTO_IMPORT:
827 link_info.pei386_auto_import = 0;
828 break;
829 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
830 link_info.pei386_runtime_pseudo_reloc =
831 DEFAULT_PSEUDO_RELOC_VERSION;
832 break;
833 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
834 link_info.pei386_runtime_pseudo_reloc = 1;
835 break;
836 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
837 link_info.pei386_runtime_pseudo_reloc = 2;
838 break;
839 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
840 link_info.pei386_runtime_pseudo_reloc = 0;
841 break;
842 case OPTION_ENABLE_EXTRA_PE_DEBUG:
843 pe_dll_extra_pe_debug = 1;
844 break;
845 #endif
846 case OPTION_LARGE_ADDRESS_AWARE:
847 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
848 break;
849 case OPTION_DISABLE_LARGE_ADDRESS_AWARE:
850 real_flags &= ~ IMAGE_FILE_LARGE_ADDRESS_AWARE;
851 break;
852 case OPTION_ENABLE_LONG_SECTION_NAMES:
853 pe_use_coff_long_section_names = 1;
854 break;
855 case OPTION_DISABLE_LONG_SECTION_NAMES:
856 pe_use_coff_long_section_names = 0;
857 break;
858 /* Get DLLCharacteristics bits */
859 case OPTION_DYNAMIC_BASE:
860 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
861 break;
862 case OPTION_FORCE_INTEGRITY:
863 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
864 break;
865 case OPTION_NX_COMPAT:
866 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
867 break;
868 case OPTION_NO_ISOLATION:
869 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
870 break;
871 case OPTION_NO_SEH:
872 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
873 break;
874 case OPTION_NO_BIND:
875 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
876 break;
877 case OPTION_WDM_DRIVER:
878 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
879 break;
880 case OPTION_TERMINAL_SERVER_AWARE:
881 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
882 break;
883 }
884
885 /* Set DLLCharacteristics bits */
886 set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
887
888 return TRUE;
889 }
890 \f
891
892 #ifdef DLL_SUPPORT
893 static unsigned long
894 strhash (const char *str)
895 {
896 const unsigned char *s;
897 unsigned long hash;
898 unsigned int c;
899 unsigned int len;
900
901 hash = 0;
902 len = 0;
903 s = (const unsigned char *) str;
904 while ((c = *s++) != '\0')
905 {
906 hash += c + (c << 17);
907 hash ^= hash >> 2;
908 ++len;
909 }
910 hash += len + (len << 17);
911 hash ^= hash >> 2;
912
913 return hash;
914 }
915
916 /* Use the output file to create a image base for relocatable DLLs. */
917
918 static unsigned long
919 compute_dll_image_base (const char *ofile)
920 {
921 unsigned long hash = strhash (ofile);
922 return pe_auto_image_base + ((hash << 16) & 0x0FFC0000);
923 }
924 #endif
925
926 /* Assign values to the special symbols before the linker script is
927 read. */
928
929 static void
930 gld_${EMULATION_NAME}_set_symbols (void)
931 {
932 /* Run through and invent symbols for all the
933 names and insert the defaults. */
934 int j;
935
936 is_underscoring ();
937
938 if (!init[IMAGEBASEOFF].inited)
939 {
940 if (link_info.relocatable)
941 init[IMAGEBASEOFF].value = 0;
942 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
943 {
944 #ifdef DLL_SUPPORT
945 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base
946 ? compute_dll_image_base (output_filename)
947 : NT_DLL_IMAGE_BASE);
948 #else
949 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
950 #endif
951 }
952 else
953 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
954 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
955 }
956
957 /* Don't do any symbol assignments if this is a relocatable link. */
958 if (link_info.relocatable)
959 return;
960
961 /* Glue the assignments into the abs section. */
962 push_stat_ptr (&abs_output_section->children);
963
964 for (j = 0; init[j].ptr; j++)
965 {
966 long val = init[j].value;
967 lang_assignment_statement_type *rv;
968
969 rv = lang_add_assignment (exp_assign (GET_INIT_SYMBOL_NAME (j),
970 exp_intop (val), FALSE));
971 if (init[j].size == sizeof (short))
972 *(short *) init[j].ptr = val;
973 else if (init[j].size == sizeof (int))
974 *(int *) init[j].ptr = val;
975 else if (init[j].size == sizeof (long))
976 *(long *) init[j].ptr = val;
977 /* This might be a long long or other special type. */
978 else if (init[j].size == sizeof (bfd_vma))
979 *(bfd_vma *) init[j].ptr = val;
980 else abort ();
981 if (j == IMAGEBASEOFF)
982 image_base_statement = rv;
983 }
984 /* Restore the pointer. */
985 pop_stat_ptr ();
986
987 if (pe.FileAlignment > pe.SectionAlignment)
988 {
989 einfo (_("%P: warning, file alignment > section alignment.\n"));
990 }
991 }
992
993 /* This is called after the linker script and the command line options
994 have been read. */
995
996 static void
997 gld_${EMULATION_NAME}_after_parse (void)
998 {
999 /* PR ld/6744: Warn the user if they have used an ELF-only
1000 option hoping it will work on PE. */
1001 if (link_info.export_dynamic)
1002 einfo (_("%P: warning: --export-dynamic is not supported for PE "
1003 "targets, did you mean --export-all-symbols?\n"));
1004
1005 set_entry_point ();
1006
1007 after_parse_default ();
1008 }
1009
1010 /* pe-dll.c directly accesses pe_data_import_dll,
1011 so it must be defined outside of #ifdef DLL_SUPPORT.
1012 Note - this variable is deliberately not initialised.
1013 This allows it to be treated as a common varaible, and only
1014 exist in one incarnation in a multiple target enabled linker. */
1015 char * pe_data_import_dll;
1016
1017 #ifdef DLL_SUPPORT
1018 static struct bfd_link_hash_entry *pe_undef_found_sym;
1019
1020 static bfd_boolean
1021 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
1022 {
1023 int sl;
1024 char *string = inf;
1025 const char *hs = h->root.string;
1026
1027 sl = strlen (string);
1028 if (h->type == bfd_link_hash_defined
1029 && ((*hs == '@' && *string == '_'
1030 && strncmp (hs + 1, string + 1, sl - 1) == 0)
1031 || strncmp (hs, string, sl) == 0)
1032 && h->root.string[sl] == '@')
1033 {
1034 pe_undef_found_sym = h;
1035 return FALSE;
1036 }
1037 return TRUE;
1038 }
1039
1040 static void
1041 pe_fixup_stdcalls (void)
1042 {
1043 static int gave_warning_message = 0;
1044 struct bfd_link_hash_entry *undef, *sym;
1045
1046 if (pe_dll_extra_pe_debug)
1047 printf ("%s\n", __FUNCTION__);
1048
1049 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1050 if (undef->type == bfd_link_hash_undefined)
1051 {
1052 char* at = strchr (undef->root.string, '@');
1053 int lead_at = (*undef->root.string == '@');
1054 if (lead_at)
1055 at = strchr (undef->root.string + 1, '@');
1056
1057 if (at || lead_at)
1058 {
1059 /* The symbol is a stdcall symbol, so let's look for a
1060 cdecl symbol with the same name and resolve to that. */
1061 char *cname = xstrdup (undef->root.string);
1062
1063 if (lead_at)
1064 *cname = '_';
1065 at = strchr (cname, '@');
1066 if (at)
1067 *at = 0;
1068 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
1069
1070 if (sym && sym->type == bfd_link_hash_defined)
1071 {
1072 undef->type = bfd_link_hash_defined;
1073 undef->u.def.value = sym->u.def.value;
1074 undef->u.def.section = sym->u.def.section;
1075
1076 if (pe_enable_stdcall_fixup == -1)
1077 {
1078 einfo (_("Warning: resolving %s by linking to %s\n"),
1079 undef->root.string, cname);
1080 if (! gave_warning_message)
1081 {
1082 gave_warning_message = 1;
1083 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1084 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1085 }
1086 }
1087 }
1088 }
1089 else
1090 {
1091 /* The symbol is a cdecl symbol, so we look for stdcall
1092 symbols - which means scanning the whole symbol table. */
1093 pe_undef_found_sym = 0;
1094 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
1095 (char *) undef->root.string);
1096 sym = pe_undef_found_sym;
1097 if (sym)
1098 {
1099 undef->type = bfd_link_hash_defined;
1100 undef->u.def.value = sym->u.def.value;
1101 undef->u.def.section = sym->u.def.section;
1102
1103 if (pe_enable_stdcall_fixup == -1)
1104 {
1105 einfo (_("Warning: resolving %s by linking to %s\n"),
1106 undef->root.string, sym->root.string);
1107 if (! gave_warning_message)
1108 {
1109 gave_warning_message = 1;
1110 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1111 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1112 }
1113 }
1114 }
1115 }
1116 }
1117 }
1118
1119 static int
1120 make_import_fixup (arelent *rel, asection *s)
1121 {
1122 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1123 char addend[4];
1124
1125 if (pe_dll_extra_pe_debug)
1126 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1127 (unsigned long) rel->address, (long) rel->addend);
1128
1129 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
1130 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
1131 s->owner, s, rel->address);
1132
1133 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
1134
1135 return 1;
1136 }
1137
1138 static void
1139 pe_find_data_imports (void)
1140 {
1141 struct bfd_link_hash_entry *undef, *sym;
1142
1143 if (link_info.pei386_auto_import == 0)
1144 return;
1145
1146 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1147 {
1148 if (undef->type == bfd_link_hash_undefined)
1149 {
1150 /* C++ symbols are *long*. */
1151 char buf[4096];
1152
1153 if (pe_dll_extra_pe_debug)
1154 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1155
1156 sprintf (buf, "__imp_%s", undef->root.string);
1157
1158 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
1159
1160 if (sym && sym->type == bfd_link_hash_defined)
1161 {
1162 bfd *b = sym->u.def.section->owner;
1163 asymbol **symbols;
1164 int nsyms, i;
1165
1166 if (link_info.pei386_auto_import == -1)
1167 {
1168 static bfd_boolean warned = FALSE;
1169
1170 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
1171 undef->root.string, buf);
1172
1173 /* PR linker/4844. */
1174 if (! warned)
1175 {
1176 warned = TRUE;
1177 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
1178 This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
1179 }
1180 }
1181
1182 if (!bfd_generic_link_read_symbols (b))
1183 {
1184 einfo (_("%B%F: could not read symbols: %E\n"), b);
1185 return;
1186 }
1187
1188 symbols = bfd_get_outsymbols (b);
1189 nsyms = bfd_get_symcount (b);
1190
1191 for (i = 0; i < nsyms; i++)
1192 {
1193 if (! CONST_STRNEQ (symbols[i]->name,
1194 U ("_head_")))
1195 continue;
1196
1197 if (pe_dll_extra_pe_debug)
1198 printf ("->%s\n", symbols[i]->name);
1199
1200 pe_data_import_dll = (char *) (symbols[i]->name
1201 + U_SIZE ("_head_") - 1);
1202 break;
1203 }
1204
1205 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
1206 make_import_fixup);
1207
1208 /* Let's differentiate it somehow from defined. */
1209 undef->type = bfd_link_hash_defweak;
1210 /* We replace original name with __imp_ prefixed, this
1211 1) may trash memory 2) leads to duplicate symbol generation.
1212 Still, IMHO it's better than having name poluted. */
1213 undef->root.string = sym->root.string;
1214 undef->u.def.value = sym->u.def.value;
1215 undef->u.def.section = sym->u.def.section;
1216 }
1217 }
1218 }
1219 }
1220
1221 static bfd_boolean
1222 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1223 {
1224 printf ("+%s\n", h->string);
1225
1226 return TRUE;
1227 }
1228 #endif /* DLL_SUPPORT */
1229
1230 static void
1231 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1232 {
1233 int *found = (int *) obj;
1234 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1235 *found = 1;
1236 }
1237
1238 static void
1239 gld_${EMULATION_NAME}_after_open (void)
1240 {
1241 after_open_default ();
1242
1243 #ifdef DLL_SUPPORT
1244 if (pe_dll_extra_pe_debug)
1245 {
1246 bfd *a;
1247 struct bfd_link_hash_entry *sym;
1248
1249 printf ("%s()\n", __FUNCTION__);
1250
1251 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1252 printf ("-%s\n", sym->root.string);
1253 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1254
1255 for (a = link_info.input_bfds; a; a = a->link_next)
1256 printf ("*%s\n",a->filename);
1257 }
1258 #endif
1259
1260 /* Pass the wacky PE command line options into the output bfd.
1261 FIXME: This should be done via a function, rather than by
1262 including an internal BFD header. */
1263
1264 if (coff_data (link_info.output_bfd) == NULL
1265 || coff_data (link_info.output_bfd)->pe == 0)
1266 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1267 link_info.output_bfd);
1268
1269 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1270 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1271 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1272 pe_data (link_info.output_bfd)->insert_timestamp = insert_timestamp;
1273
1274 /* At this point we must decide whether to use long section names
1275 in the output or not. If the user hasn't explicitly specified
1276 on the command line, we leave it to the default for the format
1277 (object files yes, image files no), except if there is debug
1278 information present; GDB relies on the long section names to
1279 find it, so enable it in that case. */
1280 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1281 {
1282 /* Iterate over all sections of all input BFDs, checking
1283 for any that begin 'debug_' and are long names. */
1284 LANG_FOR_EACH_INPUT_STATEMENT (is)
1285 {
1286 int found_debug = 0;
1287 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1288 if (found_debug)
1289 {
1290 pe_use_coff_long_section_names = 1;
1291 break;
1292 }
1293 }
1294 }
1295
1296 pe_output_file_set_long_section_names (link_info.output_bfd);
1297
1298 #ifdef DLL_SUPPORT
1299 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1300 pe_fixup_stdcalls ();
1301
1302 pe_process_import_defs (link_info.output_bfd, &link_info);
1303
1304 pe_find_data_imports ();
1305
1306 /* As possibly new symbols are added by imports, we rerun
1307 stdcall/fastcall fixup here. */
1308 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1309 pe_fixup_stdcalls ();
1310
1311 #if defined (TARGET_IS_i386pe) \
1312 || defined (TARGET_IS_armpe) \
1313 || defined (TARGET_IS_arm_epoc_pe) \
1314 || defined (TARGET_IS_arm_wince_pe)
1315 if (!link_info.relocatable)
1316 pe_dll_build_sections (link_info.output_bfd, &link_info);
1317 #else
1318 if (link_info.shared)
1319 pe_dll_build_sections (link_info.output_bfd, &link_info);
1320 else
1321 pe_exe_build_sections (link_info.output_bfd, &link_info);
1322 #endif
1323 #endif /* DLL_SUPPORT */
1324
1325 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1326 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1327 {
1328 /* The arm backend needs special fields in the output hash structure.
1329 These will only be created if the output format is an arm format,
1330 hence we do not support linking and changing output formats at the
1331 same time. Use a link followed by objcopy to change output formats. */
1332 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1333 return;
1334 }
1335 {
1336 /* Find a BFD that can hold the interworking stubs. */
1337 LANG_FOR_EACH_INPUT_STATEMENT (is)
1338 {
1339 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1340 break;
1341 }
1342 }
1343 #endif
1344
1345 {
1346 /* This next chunk of code tries to detect the case where you have
1347 two import libraries for the same DLL (specifically,
1348 symbolically linking libm.a and libc.a in cygwin to
1349 libcygwin.a). In those cases, it's possible for function
1350 thunks from the second implib to be used but without the
1351 head/tail objects, causing an improper import table. We detect
1352 those cases and rename the "other" import libraries to match
1353 the one the head/tail come from, so that the linker will sort
1354 things nicely and produce a valid import table. */
1355
1356 LANG_FOR_EACH_INPUT_STATEMENT (is)
1357 {
1358 if (is->the_bfd->my_archive)
1359 {
1360 int idata2 = 0, reloc_count=0, is_imp = 0;
1361 asection *sec;
1362
1363 /* See if this is an import library thunk. */
1364 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1365 {
1366 if (strcmp (sec->name, ".idata\$2") == 0)
1367 idata2 = 1;
1368 if (CONST_STRNEQ (sec->name, ".idata\$"))
1369 is_imp = 1;
1370 reloc_count += sec->reloc_count;
1371 }
1372
1373 if (is_imp && !idata2 && reloc_count)
1374 {
1375 /* It is, look for the reference to head and see if it's
1376 from our own library. */
1377 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1378 {
1379 int i;
1380 long relsize;
1381 asymbol **symbols;
1382 arelent **relocs;
1383 int nrelocs;
1384
1385 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1386 if (relsize < 1)
1387 break;
1388
1389 if (!bfd_generic_link_read_symbols (is->the_bfd))
1390 {
1391 einfo (_("%B%F: could not read symbols: %E\n"),
1392 is->the_bfd);
1393 return;
1394 }
1395 symbols = bfd_get_outsymbols (is->the_bfd);
1396
1397 relocs = xmalloc ((size_t) relsize);
1398 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1399 relocs, symbols);
1400 if (nrelocs < 0)
1401 {
1402 free (relocs);
1403 einfo ("%X%P: unable to process relocs: %E\n");
1404 return;
1405 }
1406
1407 for (i = 0; i < nrelocs; i++)
1408 {
1409 struct bfd_symbol *s;
1410 struct bfd_link_hash_entry * blhe;
1411 char *other_bfd_filename;
1412 char *n;
1413
1414 s = (relocs[i]->sym_ptr_ptr)[0];
1415
1416 if (s->flags & BSF_LOCAL)
1417 continue;
1418
1419 /* Thunk section with reloc to another bfd. */
1420 blhe = bfd_link_hash_lookup (link_info.hash,
1421 s->name,
1422 FALSE, FALSE, TRUE);
1423
1424 if (blhe == NULL
1425 || blhe->type != bfd_link_hash_defined)
1426 continue;
1427
1428 other_bfd_filename
1429 = blhe->u.def.section->owner->my_archive
1430 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1431 : bfd_get_filename (blhe->u.def.section->owner);
1432
1433 if (filename_cmp (bfd_get_filename
1434 (is->the_bfd->my_archive),
1435 other_bfd_filename) == 0)
1436 continue;
1437
1438 /* Rename this implib to match the other one. */
1439 n = xmalloc (strlen (other_bfd_filename) + 1);
1440 strcpy (n, other_bfd_filename);
1441 is->the_bfd->my_archive->filename = n;
1442 }
1443
1444 free (relocs);
1445 /* Note - we do not free the symbols,
1446 they are now cached in the BFD. */
1447 }
1448 }
1449 }
1450 }
1451 }
1452
1453 {
1454 int is_ms_arch = 0;
1455 bfd *cur_arch = 0;
1456 lang_input_statement_type *is2;
1457 lang_input_statement_type *is3;
1458
1459 /* Careful - this is a shell script. Watch those dollar signs! */
1460 /* Microsoft import libraries have every member named the same,
1461 and not in the right order for us to link them correctly. We
1462 must detect these and rename the members so that they'll link
1463 correctly. There are three types of objects: the head, the
1464 thunks, and the sentinel(s). The head is easy; it's the one
1465 with idata2. We assume that the sentinels won't have relocs,
1466 and the thunks will. It's easier than checking the symbol
1467 table for external references. */
1468 LANG_FOR_EACH_INPUT_STATEMENT (is)
1469 {
1470 if (is->the_bfd->my_archive)
1471 {
1472 char *pnt;
1473 bfd *arch = is->the_bfd->my_archive;
1474
1475 if (cur_arch != arch)
1476 {
1477 cur_arch = arch;
1478 is_ms_arch = 1;
1479
1480 for (is3 = is;
1481 is3 && is3->the_bfd->my_archive == arch;
1482 is3 = (lang_input_statement_type *) is3->next)
1483 {
1484 /* A MS dynamic import library can also contain static
1485 members, so look for the first element with a .dll
1486 extension, and use that for the remainder of the
1487 comparisons. */
1488 pnt = strrchr (is3->the_bfd->filename, '.');
1489 if (pnt != NULL && filename_cmp (pnt, ".dll") == 0)
1490 break;
1491 }
1492
1493 if (is3 == NULL)
1494 is_ms_arch = 0;
1495 else
1496 {
1497 /* OK, found one. Now look to see if the remaining
1498 (dynamic import) members use the same name. */
1499 for (is2 = is;
1500 is2 && is2->the_bfd->my_archive == arch;
1501 is2 = (lang_input_statement_type *) is2->next)
1502 {
1503 /* Skip static members, ie anything with a .obj
1504 extension. */
1505 pnt = strrchr (is2->the_bfd->filename, '.');
1506 if (pnt != NULL && filename_cmp (pnt, ".obj") == 0)
1507 continue;
1508
1509 if (filename_cmp (is3->the_bfd->filename,
1510 is2->the_bfd->filename))
1511 {
1512 is_ms_arch = 0;
1513 break;
1514 }
1515 }
1516 }
1517 }
1518
1519 /* This fragment might have come from an .obj file in a Microsoft
1520 import, and not an actual import record. If this is the case,
1521 then leave the filename alone. */
1522 pnt = strrchr (is->the_bfd->filename, '.');
1523
1524 if (is_ms_arch && (filename_cmp (pnt, ".dll") == 0))
1525 {
1526 int idata2 = 0, reloc_count=0;
1527 asection *sec;
1528 char *new_name, seq;
1529
1530 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1531 {
1532 if (strcmp (sec->name, ".idata\$2") == 0)
1533 idata2 = 1;
1534 reloc_count += sec->reloc_count;
1535 }
1536
1537 if (idata2) /* .idata2 is the TOC */
1538 seq = 'a';
1539 else if (reloc_count > 0) /* thunks */
1540 seq = 'b';
1541 else /* sentinel */
1542 seq = 'c';
1543
1544 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1545 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1546 is->the_bfd->filename = new_name;
1547
1548 new_name = xmalloc (strlen (is->filename) + 3);
1549 sprintf (new_name, "%s.%c", is->filename, seq);
1550 is->filename = new_name;
1551 }
1552 }
1553 }
1554 }
1555
1556 {
1557 /* The following chunk of code tries to identify jump stubs in
1558 import libraries which are dead code and eliminates them
1559 from the final link. For each exported symbol <sym>, there
1560 is a object file in the import library with a .text section
1561 and several .idata\$* sections. The .text section contains the
1562 symbol definition for <sym> which is a jump stub of the form
1563 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1564 for __imp_<sym> which is the address of the slot for <sym> in
1565 the import address table. When a symbol is imported explicitly
1566 using __declspec(dllimport) declaration, the compiler generates
1567 a reference to __imp_<sym> which directly resolves to the
1568 symbol in .idata\$5, in which case the jump stub code is not
1569 needed. The following code tries to identify jump stub sections
1570 in import libraries which are not referred to by anyone and
1571 marks them for exclusion from the final link. */
1572 LANG_FOR_EACH_INPUT_STATEMENT (is)
1573 {
1574 if (is->the_bfd->my_archive)
1575 {
1576 int is_imp = 0;
1577 asection *sec, *stub_sec = NULL;
1578
1579 /* See if this is an import library thunk. */
1580 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1581 {
1582 if (strncmp (sec->name, ".idata\$", 7) == 0)
1583 is_imp = 1;
1584 /* The section containing the jmp stub has code
1585 and has a reloc. */
1586 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1587 stub_sec = sec;
1588 }
1589
1590 if (is_imp && stub_sec)
1591 {
1592 asymbol **symbols;
1593 long nsyms, src_count;
1594 struct bfd_link_hash_entry * blhe;
1595
1596 if (!bfd_generic_link_read_symbols (is->the_bfd))
1597 {
1598 einfo (_("%B%F: could not read symbols: %E\n"),
1599 is->the_bfd);
1600 return;
1601 }
1602 symbols = bfd_get_outsymbols (is->the_bfd);
1603 nsyms = bfd_get_symcount (is->the_bfd);
1604
1605 for (src_count = 0; src_count < nsyms; src_count++)
1606 {
1607 if (symbols[src_count]->section->id == stub_sec->id)
1608 {
1609 /* This symbol belongs to the section containing
1610 the stub. */
1611 blhe = bfd_link_hash_lookup (link_info.hash,
1612 symbols[src_count]->name,
1613 FALSE, FALSE, TRUE);
1614 /* If the symbol in the stub section has no other
1615 undefined references, exclude the stub section
1616 from the final link. */
1617 if (blhe != NULL
1618 && blhe->type == bfd_link_hash_defined
1619 && blhe->u.undef.next == NULL
1620 && blhe != link_info.hash->undefs_tail)
1621 stub_sec->flags |= SEC_EXCLUDE;
1622 }
1623 }
1624 }
1625 }
1626 }
1627 }
1628 }
1629 \f
1630 static void
1631 gld_${EMULATION_NAME}_before_allocation (void)
1632 {
1633 #ifdef TARGET_IS_ppcpe
1634 /* Here we rummage through the found bfds to collect toc information. */
1635 {
1636 LANG_FOR_EACH_INPUT_STATEMENT (is)
1637 {
1638 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1639 {
1640 /* xgettext:c-format */
1641 einfo (_("Errors encountered processing file %s\n"), is->filename);
1642 }
1643 }
1644 }
1645
1646 /* We have seen it all. Allocate it, and carry on. */
1647 ppc_allocate_toc_section (&link_info);
1648 #endif /* TARGET_IS_ppcpe */
1649
1650 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1651 /* FIXME: we should be able to set the size of the interworking stub
1652 section.
1653
1654 Here we rummage through the found bfds to collect glue
1655 information. FIXME: should this be based on a command line
1656 option? krk@cygnus.com. */
1657 {
1658 LANG_FOR_EACH_INPUT_STATEMENT (is)
1659 {
1660 if (! bfd_arm_process_before_allocation
1661 (is->the_bfd, & link_info, support_old_code))
1662 {
1663 /* xgettext:c-format */
1664 einfo (_("Errors encountered processing file %s for interworking\n"),
1665 is->filename);
1666 }
1667 }
1668 }
1669
1670 /* We have seen it all. Allocate it, and carry on. */
1671 bfd_arm_allocate_interworking_sections (& link_info);
1672 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1673
1674 before_allocation_default ();
1675 }
1676 \f
1677 #ifdef DLL_SUPPORT
1678 /* This is called when an input file isn't recognized as a BFD. We
1679 check here for .DEF files and pull them in automatically. */
1680
1681 static int
1682 saw_option (char *option)
1683 {
1684 int i;
1685
1686 for (i = 0; init[i].ptr; i++)
1687 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1688 return init[i].inited;
1689 return 0;
1690 }
1691 #endif /* DLL_SUPPORT */
1692
1693 static bfd_boolean
1694 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1695 {
1696 #ifdef DLL_SUPPORT
1697 const char *ext = entry->filename + strlen (entry->filename) - 4;
1698
1699 if (filename_cmp (ext, ".def") == 0 || filename_cmp (ext, ".DEF") == 0)
1700 {
1701 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1702
1703 if (pe_def_file)
1704 {
1705 int i, buflen=0, len;
1706 char *buf;
1707
1708 for (i = 0; i < pe_def_file->num_exports; i++)
1709 {
1710 len = strlen (pe_def_file->exports[i].internal_name);
1711 if (buflen < len + 2)
1712 buflen = len + 2;
1713 }
1714
1715 buf = xmalloc (buflen);
1716
1717 for (i = 0; i < pe_def_file->num_exports; i++)
1718 {
1719 struct bfd_link_hash_entry *h;
1720
1721 sprintf (buf, "%s%s", U (""),
1722 pe_def_file->exports[i].internal_name);
1723
1724 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1725 if (h == (struct bfd_link_hash_entry *) NULL)
1726 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1727 if (h->type == bfd_link_hash_new)
1728 {
1729 h->type = bfd_link_hash_undefined;
1730 h->u.undef.abfd = NULL;
1731 bfd_link_add_undef (link_info.hash, h);
1732 }
1733 }
1734 free (buf);
1735
1736 /* def_file_print (stdout, pe_def_file); */
1737 if (pe_def_file->is_dll == 1)
1738 link_info.shared = 1;
1739
1740 if (pe_def_file->base_address != (bfd_vma)(-1))
1741 {
1742 pe.ImageBase
1743 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1744 = init[IMAGEBASEOFF].value
1745 = pe_def_file->base_address;
1746 init[IMAGEBASEOFF].inited = 1;
1747 if (image_base_statement)
1748 image_base_statement->exp
1749 = exp_assign ("__image_base__", exp_intop (pe.ImageBase),
1750 FALSE);
1751 }
1752
1753 if (pe_def_file->stack_reserve != -1
1754 && ! saw_option ("__size_of_stack_reserve__"))
1755 {
1756 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1757 if (pe_def_file->stack_commit != -1)
1758 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1759 }
1760 if (pe_def_file->heap_reserve != -1
1761 && ! saw_option ("__size_of_heap_reserve__"))
1762 {
1763 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1764 if (pe_def_file->heap_commit != -1)
1765 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1766 }
1767 return TRUE;
1768 }
1769 }
1770 #endif
1771 return FALSE;
1772 }
1773
1774 static bfd_boolean
1775 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1776 {
1777 #ifdef DLL_SUPPORT
1778 #ifdef TARGET_IS_i386pe
1779 pe_dll_id_target ("pei-i386");
1780 #endif
1781 #ifdef TARGET_IS_shpe
1782 pe_dll_id_target ("pei-shl");
1783 #endif
1784 #ifdef TARGET_IS_armpe
1785 pe_dll_id_target ("pei-arm-little");
1786 #endif
1787 #ifdef TARGET_IS_arm_epoc_pe
1788 pe_dll_id_target ("epoc-pei-arm-little");
1789 #endif
1790 #ifdef TARGET_IS_arm_wince_pe
1791 pe_dll_id_target ("pei-arm-wince-little");
1792 #endif
1793 if (pe_bfd_is_dll (entry->the_bfd))
1794 return pe_implied_import_dll (entry->filename);
1795 #endif
1796 return FALSE;
1797 }
1798
1799 static void
1800 gld_${EMULATION_NAME}_finish (void)
1801 {
1802 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1803 struct bfd_link_hash_entry * h;
1804
1805 if (thumb_entry_symbol != NULL)
1806 {
1807 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1808 FALSE, FALSE, TRUE);
1809
1810 if (h != (struct bfd_link_hash_entry *) NULL
1811 && (h->type == bfd_link_hash_defined
1812 || h->type == bfd_link_hash_defweak)
1813 && h->u.def.section->output_section != NULL)
1814 {
1815 static char buffer[32];
1816 bfd_vma val;
1817
1818 /* Special procesing is required for a Thumb entry symbol. The
1819 bottom bit of its address must be set. */
1820 val = (h->u.def.value
1821 + bfd_get_section_vma (link_info.output_bfd,
1822 h->u.def.section->output_section)
1823 + h->u.def.section->output_offset);
1824
1825 val |= 1;
1826
1827 /* Now convert this value into a string and store it in entry_symbol
1828 where the lang_finish() function will pick it up. */
1829 buffer[0] = '0';
1830 buffer[1] = 'x';
1831
1832 sprintf_vma (buffer + 2, val);
1833
1834 if (entry_symbol.name != NULL && entry_from_cmdline)
1835 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1836 thumb_entry_symbol, entry_symbol.name);
1837 entry_symbol.name = buffer;
1838 }
1839 else
1840 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
1841 }
1842 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
1843
1844 finish_default ();
1845
1846 #ifdef DLL_SUPPORT
1847 if (link_info.shared
1848 #if !defined(TARGET_IS_shpe)
1849 || (!link_info.relocatable && pe_def_file->num_exports != 0)
1850 #endif
1851 )
1852 {
1853 pe_dll_fill_sections (link_info.output_bfd, &link_info);
1854 if (pe_implib_filename)
1855 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info);
1856 }
1857 #if defined(TARGET_IS_shpe)
1858 /* ARM doesn't need relocs. */
1859 else
1860 {
1861 pe_exe_fill_sections (link_info.output_bfd, &link_info);
1862 }
1863 #endif
1864
1865 if (pe_out_def_filename)
1866 pe_dll_generate_def_file (pe_out_def_filename);
1867 #endif /* DLL_SUPPORT */
1868
1869 /* I don't know where .idata gets set as code, but it shouldn't be. */
1870 {
1871 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1872
1873 if (asec)
1874 {
1875 asec->flags &= ~SEC_CODE;
1876 asec->flags |= SEC_DATA;
1877 }
1878 }
1879 }
1880
1881 \f
1882 /* Place an orphan section.
1883
1884 We use this to put sections in a reasonable place in the file, and
1885 to ensure that they are aligned as required.
1886
1887 We handle grouped sections here as well. A section named .foo\$nn
1888 goes into the output section .foo. All grouped sections are sorted
1889 by name.
1890
1891 Grouped sections for the default sections are handled by the
1892 default linker script using wildcards, and are sorted by
1893 sort_sections. */
1894
1895 static lang_output_section_statement_type *
1896 gld_${EMULATION_NAME}_place_orphan (asection *s,
1897 const char *secname,
1898 int constraint)
1899 {
1900 const char *orig_secname = secname;
1901 char *dollar = NULL;
1902 lang_output_section_statement_type *os;
1903 lang_statement_list_type add_child;
1904 lang_output_section_statement_type *match_by_name = NULL;
1905 lang_statement_union_type **pl;
1906
1907 /* Look through the script to see where to place this section. */
1908 if (!link_info.relocatable
1909 && (dollar = strchr (secname, '\$')) != NULL)
1910 {
1911 size_t len = dollar - secname;
1912 char *newname = xmalloc (len + 1);
1913 memcpy (newname, secname, len);
1914 newname[len] = '\0';
1915 secname = newname;
1916 }
1917
1918 lang_list_init (&add_child);
1919
1920 os = NULL;
1921 if (constraint == 0)
1922 for (os = lang_output_section_find (secname);
1923 os != NULL;
1924 os = next_matching_output_section_statement (os, 0))
1925 {
1926 /* If we don't match an existing output section, tell
1927 lang_insert_orphan to create a new output section. */
1928 constraint = SPECIAL;
1929
1930 if (os->bfd_section != NULL
1931 && (os->bfd_section->flags == 0
1932 || ((s->flags ^ os->bfd_section->flags)
1933 & (SEC_LOAD | SEC_ALLOC)) == 0))
1934 {
1935 /* We already have an output section statement with this
1936 name, and its bfd section has compatible flags.
1937 If the section already exists but does not have any flags set,
1938 then it has been created by the linker, probably as a result of
1939 a --section-start command line switch. */
1940 lang_add_section (&add_child, s, NULL, os);
1941 break;
1942 }
1943
1944 /* Save unused output sections in case we can match them
1945 against orphans later. */
1946 if (os->bfd_section == NULL)
1947 match_by_name = os;
1948 }
1949
1950 /* If we didn't match an active output section, see if we matched an
1951 unused one and use that. */
1952 if (os == NULL && match_by_name)
1953 {
1954 lang_add_section (&match_by_name->children, s, NULL, match_by_name);
1955 return match_by_name;
1956 }
1957
1958 if (os == NULL)
1959 {
1960 static struct orphan_save hold[] =
1961 {
1962 { ".text",
1963 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1964 0, 0, 0, 0 },
1965 { ".idata",
1966 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1967 0, 0, 0, 0 },
1968 { ".rdata",
1969 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1970 0, 0, 0, 0 },
1971 { ".data",
1972 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1973 0, 0, 0, 0 },
1974 { ".bss",
1975 SEC_ALLOC,
1976 0, 0, 0, 0 }
1977 };
1978 enum orphan_save_index
1979 {
1980 orphan_text = 0,
1981 orphan_idata,
1982 orphan_rodata,
1983 orphan_data,
1984 orphan_bss
1985 };
1986 static int orphan_init_done = 0;
1987 struct orphan_save *place;
1988 lang_output_section_statement_type *after;
1989 etree_type *address;
1990
1991 if (!orphan_init_done)
1992 {
1993 struct orphan_save *ho;
1994 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1995 if (ho->name != NULL)
1996 {
1997 ho->os = lang_output_section_find (ho->name);
1998 if (ho->os != NULL && ho->os->flags == 0)
1999 ho->os->flags = ho->flags;
2000 }
2001 orphan_init_done = 1;
2002 }
2003
2004 /* Try to put the new output section in a reasonable place based
2005 on the section name and section flags. */
2006
2007 place = NULL;
2008 if ((s->flags & SEC_ALLOC) == 0)
2009 ;
2010 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2011 place = &hold[orphan_bss];
2012 else if ((s->flags & SEC_READONLY) == 0)
2013 place = &hold[orphan_data];
2014 else if ((s->flags & SEC_CODE) == 0)
2015 {
2016 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
2017 : &hold[orphan_rodata]);
2018 }
2019 else
2020 place = &hold[orphan_text];
2021
2022 after = NULL;
2023 if (place != NULL)
2024 {
2025 if (place->os == NULL)
2026 place->os = lang_output_section_find (place->name);
2027 after = place->os;
2028 if (after == NULL)
2029 after = lang_output_section_find_by_flags (s, &place->os, NULL);
2030 if (after == NULL)
2031 /* *ABS* is always the first output section statement. */
2032 after = (&lang_output_section_statement.head
2033 ->output_section_statement);
2034 }
2035
2036 /* All sections in an executable must be aligned to a page boundary.
2037 In a relocatable link, just preserve the incoming alignment; the
2038 address is discarded by lang_insert_orphan in that case, anyway. */
2039 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2040 os = lang_insert_orphan (s, secname, constraint, after, place, address,
2041 &add_child);
2042 if (link_info.relocatable)
2043 {
2044 os->section_alignment = s->alignment_power;
2045 os->bfd_section->alignment_power = s->alignment_power;
2046 }
2047 }
2048
2049 /* If the section name has a '\$', sort it with the other '\$'
2050 sections. */
2051 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2052 {
2053 lang_input_section_type *ls;
2054 const char *lname;
2055
2056 if ((*pl)->header.type != lang_input_section_enum)
2057 continue;
2058
2059 ls = &(*pl)->input_section;
2060
2061 lname = bfd_get_section_name (ls->section->owner, ls->section);
2062 if (strchr (lname, '\$') != NULL
2063 && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2064 break;
2065 }
2066
2067 if (add_child.head != NULL)
2068 {
2069 *add_child.tail = *pl;
2070 *pl = add_child.head;
2071 }
2072
2073 return os;
2074 }
2075
2076 static bfd_boolean
2077 gld_${EMULATION_NAME}_open_dynamic_archive
2078 (const char *arch ATTRIBUTE_UNUSED,
2079 search_dirs_type *search,
2080 lang_input_statement_type *entry)
2081 {
2082 static const struct
2083 {
2084 const char * format;
2085 bfd_boolean use_prefix;
2086 }
2087 libname_fmt [] =
2088 {
2089 /* Preferred explicit import library for dll's. */
2090 { "lib%s.dll.a", FALSE },
2091 /* Alternate explicit import library for dll's. */
2092 { "%s.dll.a", FALSE },
2093 /* "libfoo.a" could be either an import lib or a static lib.
2094 For backwards compatibility, libfoo.a needs to precede
2095 libfoo.dll and foo.dll in the search. */
2096 { "lib%s.a", FALSE },
2097 /* The 'native' spelling of an import lib name is "foo.lib". */
2098 { "%s.lib", FALSE },
2099 #ifdef DLL_SUPPORT
2100 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
2101 { "%s%s.dll", TRUE },
2102 #endif
2103 /* Try "libfoo.dll" (default preferred dll name). */
2104 { "lib%s.dll", FALSE },
2105 /* Finally try 'native' dll name "foo.dll". */
2106 { "%s.dll", FALSE },
2107 /* Note: If adding more formats to this table, make sure to check to
2108 see if their length is longer than libname_fmt[0].format, and if
2109 so, update the call to xmalloc() below. */
2110 { NULL, FALSE }
2111 };
2112 static unsigned int format_max_len = 0;
2113 const char * filename;
2114 char * full_string;
2115 char * base_string;
2116 unsigned int i;
2117
2118
2119 if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
2120 return FALSE;
2121
2122 filename = entry->filename;
2123
2124 if (format_max_len == 0)
2125 /* We need to allow space in the memory that we are going to allocate
2126 for the characters in the format string. Since the format array is
2127 static we only need to calculate this information once. In theory
2128 this value could also be computed statically, but this introduces
2129 the possibility for a discrepancy and hence a possible memory
2130 corruption. The lengths we compute here will be too long because
2131 they will include any formating characters (%s) in the strings, but
2132 this will not matter. */
2133 for (i = 0; libname_fmt[i].format; i++)
2134 if (format_max_len < strlen (libname_fmt[i].format))
2135 format_max_len = strlen (libname_fmt[i].format);
2136
2137 full_string = xmalloc (strlen (search->name)
2138 + strlen (filename)
2139 + format_max_len
2140 #ifdef DLL_SUPPORT
2141 + (pe_dll_search_prefix
2142 ? strlen (pe_dll_search_prefix) : 0)
2143 #endif
2144 /* Allow for the terminating NUL and for the path
2145 separator character that is inserted between
2146 search->name and the start of the format string. */
2147 + 2);
2148
2149 sprintf (full_string, "%s/", search->name);
2150 base_string = full_string + strlen (full_string);
2151
2152 for (i = 0; libname_fmt[i].format; i++)
2153 {
2154 #ifdef DLL_SUPPORT
2155 if (libname_fmt[i].use_prefix)
2156 {
2157 if (!pe_dll_search_prefix)
2158 continue;
2159 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
2160 }
2161 else
2162 #endif
2163 sprintf (base_string, libname_fmt[i].format, filename);
2164
2165 if (ldfile_try_open_bfd (full_string, entry))
2166 break;
2167 }
2168
2169 if (!libname_fmt[i].format)
2170 {
2171 free (full_string);
2172 return FALSE;
2173 }
2174
2175 entry->filename = full_string;
2176
2177 return TRUE;
2178 }
2179
2180 static int
2181 gld_${EMULATION_NAME}_find_potential_libraries
2182 (char *name, lang_input_statement_type *entry)
2183 {
2184 return ldfile_open_file_search (name, entry, "", ".lib");
2185 }
2186 \f
2187 static char *
2188 gld_${EMULATION_NAME}_get_script (int *isfile)
2189 EOF
2190 # Scripts compiled in.
2191 # sed commands to quote an ld script as a C string.
2192 sc="-f stringify.sed"
2193
2194 fragment <<EOF
2195 {
2196 *isfile = 0;
2197
2198 if (link_info.relocatable && config.build_constructors)
2199 return
2200 EOF
2201 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2202 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
2203 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2204 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2205 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2206 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2207 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2208 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2209 echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c
2210 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
2211 fi
2212 echo ' ; else return' >> e${EMULATION_NAME}.c
2213 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2214 echo '; }' >> e${EMULATION_NAME}.c
2215
2216 fragment <<EOF
2217
2218
2219 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2220 {
2221 gld_${EMULATION_NAME}_before_parse,
2222 syslib_default,
2223 hll_default,
2224 gld_${EMULATION_NAME}_after_parse,
2225 gld_${EMULATION_NAME}_after_open,
2226 after_allocation_default,
2227 set_output_arch_default,
2228 ldemul_default_target,
2229 gld_${EMULATION_NAME}_before_allocation,
2230 gld_${EMULATION_NAME}_get_script,
2231 "${EMULATION_NAME}",
2232 "${OUTPUT_FORMAT}",
2233 gld_${EMULATION_NAME}_finish,
2234 NULL, /* Create output section statements. */
2235 gld_${EMULATION_NAME}_open_dynamic_archive,
2236 gld_${EMULATION_NAME}_place_orphan,
2237 gld_${EMULATION_NAME}_set_symbols,
2238 NULL, /* parse_args */
2239 gld${EMULATION_NAME}_add_options,
2240 gld${EMULATION_NAME}_handle_option,
2241 gld_${EMULATION_NAME}_unrecognized_file,
2242 gld_${EMULATION_NAME}_list_options,
2243 gld_${EMULATION_NAME}_recognized_file,
2244 gld_${EMULATION_NAME}_find_potential_libraries,
2245 NULL /* new_vers_pattern. */
2246 };
2247 EOF
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