| blob | df0678ddf7323f48a5421d9ea7cebb966982dad5 |
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, 2010 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 = ${SUBSYSTEM};
129 static flagword real_flags = 0;
130 static int support_old_code = 0;
131 static char * thumb_entry_symbol = NULL;
132 static lang_assignment_statement_type *image_base_statement = 0;
133 static unsigned short pe_dll_characteristics = 0;
135 #ifdef DLL_SUPPORT
136 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
137 static char *pe_out_def_filename = NULL;
138 static char *pe_implib_filename = NULL;
139 static int pe_enable_auto_image_base = 0;
140 static char *pe_dll_search_prefix = NULL;
141 #endif
143 extern const char *output_filename;
145 static int is_underscoring (void)
146 {
147 int u = 0;
148 if (pe_leading_underscore != -1)
149 return pe_leading_underscore;
150 if (!bfd_get_target_info ("${OUTPUT_FORMAT}", NULL, NULL, &u, NULL))
151 bfd_get_target_info ("${RELOCATEABLE_OUTPUT_FORMAT}", NULL, NULL, &u, NULL);
153 if (u == -1)
154 abort ();
155 pe_leading_underscore = (u != 0 ? 1 : 0);
156 return pe_leading_underscore;
157 }
159 static void
160 gld_${EMULATION_NAME}_before_parse (void)
161 {
162 is_underscoring ();
163 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
164 output_filename = "${EXECUTABLE_NAME:-a.exe}";
165 #ifdef DLL_SUPPORT
166 config.dynamic_link = TRUE;
167 config.has_shared = 1;
168 EOF
170 # Cygwin no longer wants these noisy warnings. Other PE
171 # targets might like to consider adding themselves here.
172 case ${target} in
173 *-*-cygwin*)
174 default_auto_import=1
175 default_merge_rdata=1
176 ;;
177 i[3-7]86-*-mingw* | x86_64-*-mingw*)
178 default_auto_import=1
179 default_merge_rdata=0
180 ;;
181 *)
182 default_auto_import=-1
183 default_merge_rdata=1
184 ;;
185 esac
187 fragment <<EOF
188 link_info.pei386_auto_import = ${default_auto_import};
189 /* Use by default version. */
190 link_info.pei386_runtime_pseudo_reloc = DEFAULT_PSEUDO_RELOC_VERSION;
191 #endif
192 }
193 \f
194 /* Indicates if RDATA shall be merged into DATA when pseudo-relocation
195 version 2 is used and auto-import is enabled. */
196 #define MERGE_RDATA_V2 ${default_merge_rdata}
198 /* PE format extra command line options. */
200 /* Used for setting flags in the PE header. */
201 #define OPTION_BASE_FILE (300 + 1)
202 #define OPTION_DLL (OPTION_BASE_FILE + 1)
203 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
204 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
205 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
206 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
207 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
208 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
209 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
210 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
211 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
212 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
213 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
214 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
215 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
216 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
217 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
218 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
219 #define OPTION_EXCLUDE_ALL_SYMBOLS (OPTION_EXCLUDE_SYMBOLS + 1)
220 #define OPTION_KILL_ATS (OPTION_EXCLUDE_ALL_SYMBOLS + 1)
221 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
222 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
223 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
224 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
225 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
226 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
227 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
228 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
229 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
230 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
231 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
232 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
233 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
234 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
235 #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
236 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
237 (OPTION_EXCLUDE_LIBS + 1)
238 #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
239 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
240 #define OPTION_LARGE_ADDRESS_AWARE \
241 (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
242 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 \
243 (OPTION_LARGE_ADDRESS_AWARE + 1)
244 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 \
245 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1 + 1)
246 #define OPTION_EXCLUDE_MODULES_FOR_IMPLIB \
247 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2 + 1)
248 #define OPTION_USE_NUL_PREFIXED_IMPORT_TABLES \
249 (OPTION_EXCLUDE_MODULES_FOR_IMPLIB + 1)
250 #define OPTION_NO_LEADING_UNDERSCORE \
251 (OPTION_USE_NUL_PREFIXED_IMPORT_TABLES + 1)
252 #define OPTION_LEADING_UNDERSCORE \
253 (OPTION_NO_LEADING_UNDERSCORE + 1)
254 #define OPTION_ENABLE_LONG_SECTION_NAMES \
255 (OPTION_LEADING_UNDERSCORE + 1)
256 #define OPTION_DISABLE_LONG_SECTION_NAMES \
257 (OPTION_ENABLE_LONG_SECTION_NAMES + 1)
258 /* DLLCharacteristics flags */
259 #define OPTION_DYNAMIC_BASE (OPTION_DISABLE_LONG_SECTION_NAMES + 1)
260 #define OPTION_FORCE_INTEGRITY (OPTION_DYNAMIC_BASE + 1)
261 #define OPTION_NX_COMPAT (OPTION_FORCE_INTEGRITY + 1)
262 #define OPTION_NO_ISOLATION (OPTION_NX_COMPAT + 1)
263 #define OPTION_NO_SEH (OPTION_NO_ISOLATION + 1)
264 #define OPTION_NO_BIND (OPTION_NO_SEH + 1)
265 #define OPTION_WDM_DRIVER (OPTION_NO_BIND + 1)
266 #define OPTION_TERMINAL_SERVER_AWARE (OPTION_WDM_DRIVER + 1)
268 static void
269 gld${EMULATION_NAME}_add_options
270 (int ns ATTRIBUTE_UNUSED,
271 char **shortopts ATTRIBUTE_UNUSED,
272 int nl,
273 struct option **longopts,
274 int nrl ATTRIBUTE_UNUSED,
275 struct option **really_longopts ATTRIBUTE_UNUSED)
276 {
277 static const struct option xtra_long[] = {
278 /* PE options */
279 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
280 {"dll", no_argument, NULL, OPTION_DLL},
281 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
282 {"heap", required_argument, NULL, OPTION_HEAP},
283 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
284 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
285 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
286 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
287 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
288 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
289 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
290 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
291 {"stack", required_argument, NULL, OPTION_STACK},
292 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
293 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
294 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
295 {"use-nul-prefixed-import-tables", no_argument, NULL,
296 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
297 {"no-leading-underscore", no_argument, NULL, OPTION_NO_LEADING_UNDERSCORE},
298 {"leading-underscore", no_argument, NULL, OPTION_LEADING_UNDERSCORE},
299 #ifdef DLL_SUPPORT
300 /* getopt allows abbreviations, so we do this to stop it
301 from treating -o as an abbreviation for this option. */
302 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
303 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
304 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
305 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
306 {"exclude-all-symbols", no_argument, NULL, OPTION_EXCLUDE_ALL_SYMBOLS},
307 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
308 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
309 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
310 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
311 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
312 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
313 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
314 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
315 /* getopt() allows abbreviations, so we do this to stop it from
316 treating -c as an abbreviation for these --compat-implib. */
317 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
318 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
319 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
320 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
321 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
322 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
323 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
324 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
325 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
326 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
327 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
328 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
329 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
330 #endif
331 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
332 {"enable-long-section-names", no_argument, NULL, OPTION_ENABLE_LONG_SECTION_NAMES},
333 {"disable-long-section-names", no_argument, NULL, OPTION_DISABLE_LONG_SECTION_NAMES},
334 {"dynamicbase",no_argument, NULL, OPTION_DYNAMIC_BASE},
335 {"forceinteg", no_argument, NULL, OPTION_FORCE_INTEGRITY},
336 {"nxcompat", no_argument, NULL, OPTION_NX_COMPAT},
337 {"no-isolation", no_argument, NULL, OPTION_NO_ISOLATION},
338 {"no-seh", no_argument, NULL, OPTION_NO_SEH},
339 {"no-bind", no_argument, NULL, OPTION_NO_BIND},
340 {"wdmdriver", no_argument, NULL, OPTION_WDM_DRIVER},
341 {"tsaware", no_argument, NULL, OPTION_TERMINAL_SERVER_AWARE},
342 {NULL, no_argument, NULL, 0}
343 };
345 *longopts
346 = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
347 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
348 }
350 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
351 parameters which may be input from the command line. */
353 typedef struct
354 {
355 void *ptr;
356 int size;
357 int value;
358 char *symbol;
359 int inited;
360 /* FALSE for an assembly level symbol and TRUE for a C visible symbol.
361 C visible symbols can be prefixed by underscore dependent to target's
362 settings. */
363 bfd_boolean is_c_symbol;
364 } definfo;
366 /* Get symbol name dependent to kind and C visible state of
367 underscore. */
368 #define GET_INIT_SYMBOL_NAME(IDX) \
369 (init[(IDX)].symbol \
370 + ((init[(IDX)].is_c_symbol == FALSE || (is_underscoring () != 0)) ? 0 : 1))
372 /* Decorates the C visible symbol by underscore, if target requires. */
373 #define U(CSTR) \
374 ((is_underscoring () == 0) ? CSTR : "_" CSTR)
376 /* Get size of constant string for a possible underscore prefixed
377 C visible symbol. */
378 #define U_SIZE(CSTR) \
379 (sizeof (CSTR) + (is_underscoring () == 0 ? 0 : 1))
381 #define D(field,symbol,def,usc) {&pe.field,sizeof(pe.field), def, symbol, 0, usc}
383 static definfo init[] =
384 {
385 /* imagebase must be first */
386 #define IMAGEBASEOFF 0
387 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE, FALSE),
388 #define DLLOFF 1
389 {&dll, sizeof(dll), 0, "__dll__", 0, FALSE},
390 #define MSIMAGEBASEOFF 2
391 D(ImageBase, "___ImageBase", NT_EXE_IMAGE_BASE, TRUE),
392 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT, FALSE),
393 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT, FALSE),
394 D(MajorOperatingSystemVersion,"__major_os_version__", 4, FALSE),
395 D(MinorOperatingSystemVersion,"__minor_os_version__", 0, FALSE),
396 D(MajorImageVersion,"__major_image_version__", 1, FALSE),
397 D(MinorImageVersion,"__minor_image_version__", 0, FALSE),
398 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_wince_pe)
399 D(MajorSubsystemVersion,"__major_subsystem_version__", 3, FALSE),
400 #else
401 D(MajorSubsystemVersion,"__major_subsystem_version__", 4, FALSE),
402 #endif
403 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0, FALSE),
404 D(Subsystem,"__subsystem__", ${SUBSYSTEM}, FALSE),
405 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000, FALSE),
406 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000, FALSE),
407 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000, FALSE),
408 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000, FALSE),
409 D(LoaderFlags,"__loader_flags__", 0x0, FALSE),
410 D(DllCharacteristics, "__dll_characteristics__", 0x0, FALSE),
411 { NULL, 0, 0, NULL, 0 , FALSE}
412 };
415 static void
416 gld_${EMULATION_NAME}_list_options (FILE *file)
417 {
418 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
419 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
420 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
421 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
422 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
423 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
424 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
425 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
426 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
427 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
428 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
429 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
430 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
431 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
432 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
433 fprintf (file, _(" --[no-]leading-underscore Set explicit symbol underscore prefix mode\n"));
434 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
435 #ifdef DLL_SUPPORT
436 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
437 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
438 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
439 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
440 fprintf (file, _(" --exclude-all-symbols Exclude all symbols from automatic export\n"));
441 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
442 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
443 fprintf (file, _(" Exclude objects, archive members from auto\n"));
444 fprintf (file, _(" export, place into import library instead.\n"));
445 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
446 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
447 fprintf (file, _(" --out-implib <file> Generate import library\n"));
448 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
449 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
450 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
451 create __imp_<SYMBOL> as well.\n"));
452 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
453 unless user specifies one\n"));
454 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
455 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
456 an importlib, use <string><basename>.dll\n\
457 in preference to lib<basename>.dll \n"));
458 fprintf (file, _(" --enable-auto-import Do sophisticated linking of _sym to\n\
459 __imp_sym for DATA references\n"));
460 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
461 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
462 adding pseudo-relocations resolved at\n\
463 runtime.\n"));
464 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
465 auto-imported DATA.\n"));
466 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
467 or linking to DLLs (esp. auto-import)\n"));
468 #endif
469 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
470 greater than 2 gigabytes\n"));
471 fprintf (file, _(" --enable-long-section-names Use long COFF section names even in\n\
472 executable image files\n"));
473 fprintf (file, _(" --disable-long-section-names Never use long COFF section names, even\n\
474 in object files\n"));
475 fprintf (file, _(" --dynamicbase Image base address may be relocated using\n\
476 address space layout randomization (ASLR)\n"));
477 fprintf (file, _(" --forceinteg Code integrity checks are enforced\n"));
478 fprintf (file, _(" --nxcompat Image is compatible with data execution prevention\n"));
479 fprintf (file, _(" --no-isolation Image understands isolation but do not isolate the image\n"));
480 fprintf (file, _(" --no-seh Image does not use SEH. No SE handler may\n\
481 be called in this image\n"));
482 fprintf (file, _(" --no-bind Do not bind this image\n"));
483 fprintf (file, _(" --wdmdriver Driver uses the WDM model\n"));
484 fprintf (file, _(" --tsaware Image is Terminal Server aware\n"));
485 }
488 static void
489 set_pe_name (char *name, long val)
490 {
491 int i;
492 is_underscoring ();
494 /* Find the name and set it. */
495 for (i = 0; init[i].ptr; i++)
496 {
497 if (strcmp (name, GET_INIT_SYMBOL_NAME (i)) == 0)
498 {
499 init[i].value = val;
500 init[i].inited = 1;
501 if (strcmp (name,"__image_base__") == 0)
502 set_pe_name (U ("__ImageBase"), val);
503 return;
504 }
505 }
506 abort ();
507 }
509 static void
510 set_entry_point (void)
511 {
512 const char *entry;
513 const char *initial_symbol_char;
514 int i;
516 static const struct
517 {
518 const int value;
519 const char *entry;
520 }
521 v[] =
522 {
523 { 1, "NtProcessStartup" },
524 { 2, "WinMainCRTStartup" },
525 { 3, "mainCRTStartup" },
526 { 7, "__PosixProcessStartup"},
527 { 9, "WinMainCRTStartup" },
528 {14, "mainCRTStartup" },
529 { 0, NULL }
530 };
532 /* Entry point name for arbitrary subsystem numbers. */
533 static const char default_entry[] = "mainCRTStartup";
535 if (link_info.shared || dll)
536 {
537 #if defined (TARGET_IS_i386pe)
538 entry = "DllMainCRTStartup@12";
539 #else
540 entry = "DllMainCRTStartup";
541 #endif
542 }
543 else
544 {
546 for (i = 0; v[i].entry; i++)
547 if (v[i].value == pe_subsystem)
548 break;
550 /* If no match, use the default. */
551 if (v[i].entry != NULL)
552 entry = v[i].entry;
553 else
554 entry = default_entry;
555 }
557 initial_symbol_char = (is_underscoring () != 0 ? "_" : "");
559 if (*initial_symbol_char != '\0')
560 {
561 char *alc_entry;
563 /* lang_default_entry expects its argument to be permanently
564 allocated, so we don't free this string. */
565 alc_entry = xmalloc (strlen (initial_symbol_char)
566 + strlen (entry)
567 + 1);
568 strcpy (alc_entry, initial_symbol_char);
569 strcat (alc_entry, entry);
570 entry = alc_entry;
571 }
573 lang_default_entry (entry);
574 }
576 static void
577 set_pe_subsystem (void)
578 {
579 const char *sver;
580 char *end;
581 int len;
582 int i;
583 unsigned long temp_subsystem;
584 static const struct
585 {
586 const char *name;
587 const int value;
588 }
589 v[] =
590 {
591 { "native", 1},
592 { "windows", 2},
593 { "console", 3},
594 { "posix", 7},
595 { "wince", 9},
596 { "xbox", 14},
597 { NULL, 0 }
598 };
600 /* Check for the presence of a version number. */
601 sver = strchr (optarg, ':');
602 if (sver == NULL)
603 len = strlen (optarg);
604 else
605 {
606 len = sver - optarg;
607 set_pe_name ("__major_subsystem_version__",
608 strtoul (sver + 1, &end, 0));
609 if (*end == '.')
610 set_pe_name ("__minor_subsystem_version__",
611 strtoul (end + 1, &end, 0));
612 if (*end != '\0')
613 einfo (_("%P: warning: bad version number in -subsystem option\n"));
614 }
616 /* Check for numeric subsystem. */
617 temp_subsystem = strtoul (optarg, & end, 0);
618 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
619 {
620 /* Search list for a numeric match to use its entry point. */
621 for (i = 0; v[i].name; i++)
622 if (v[i].value == (int) temp_subsystem)
623 break;
625 /* Use this subsystem. */
626 pe_subsystem = (int) temp_subsystem;
627 }
628 else
629 {
630 /* Search for subsystem by name. */
631 for (i = 0; v[i].name; i++)
632 if (strncmp (optarg, v[i].name, len) == 0
633 && v[i].name[len] == '\0')
634 break;
636 if (v[i].name == NULL)
637 {
638 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
639 return;
640 }
642 pe_subsystem = v[i].value;
643 }
645 set_pe_name ("__subsystem__", pe_subsystem);
647 return;
648 }
651 static void
652 set_pe_value (char *name)
653 {
654 char *end;
656 set_pe_name (name, strtoul (optarg, &end, 0));
658 if (end == optarg)
659 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
661 optarg = end;
662 }
665 static void
666 set_pe_stack_heap (char *resname, char *comname)
667 {
668 set_pe_value (resname);
670 if (*optarg == ',')
671 {
672 optarg++;
673 set_pe_value (comname);
674 }
675 else if (*optarg)
676 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
677 }
680 static bfd_boolean
681 gld${EMULATION_NAME}_handle_option (int optc)
682 {
683 switch (optc)
684 {
685 default:
686 return FALSE;
688 case OPTION_BASE_FILE:
689 link_info.base_file = fopen (optarg, FOPEN_WB);
690 if (link_info.base_file == NULL)
691 {
692 /* xgettext:c-format */
693 fprintf (stderr, _("%s: Can't open base file %s\n"),
694 program_name, optarg);
695 xexit (1);
696 }
697 break;
699 /* PE options. */
700 case OPTION_HEAP:
701 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
702 break;
703 case OPTION_STACK:
704 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
705 break;
706 case OPTION_SUBSYSTEM:
707 set_pe_subsystem ();
708 break;
709 case OPTION_MAJOR_OS_VERSION:
710 set_pe_value ("__major_os_version__");
711 break;
712 case OPTION_MINOR_OS_VERSION:
713 set_pe_value ("__minor_os_version__");
714 break;
715 case OPTION_MAJOR_SUBSYSTEM_VERSION:
716 set_pe_value ("__major_subsystem_version__");
717 break;
718 case OPTION_MINOR_SUBSYSTEM_VERSION:
719 set_pe_value ("__minor_subsystem_version__");
720 break;
721 case OPTION_MAJOR_IMAGE_VERSION:
722 set_pe_value ("__major_image_version__");
723 break;
724 case OPTION_MINOR_IMAGE_VERSION:
725 set_pe_value ("__minor_image_version__");
726 break;
727 case OPTION_FILE_ALIGNMENT:
728 set_pe_value ("__file_alignment__");
729 break;
730 case OPTION_SECTION_ALIGNMENT:
731 set_pe_value ("__section_alignment__");
732 break;
733 case OPTION_DLL:
734 set_pe_name ("__dll__", 1);
735 break;
736 case OPTION_IMAGE_BASE:
737 set_pe_value ("__image_base__");
738 break;
739 case OPTION_SUPPORT_OLD_CODE:
740 support_old_code = 1;
741 break;
742 case OPTION_THUMB_ENTRY:
743 thumb_entry_symbol = optarg;
744 break;
745 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
746 pe_use_nul_prefixed_import_tables = TRUE;
747 break;
748 case OPTION_NO_LEADING_UNDERSCORE:
749 pe_leading_underscore = 0;
750 break;
751 case OPTION_LEADING_UNDERSCORE:
752 pe_leading_underscore = 1;
753 break;
754 #ifdef DLL_SUPPORT
755 case OPTION_OUT_DEF:
756 pe_out_def_filename = xstrdup (optarg);
757 break;
758 case OPTION_EXPORT_ALL:
759 pe_dll_export_everything = 1;
760 break;
761 case OPTION_EXCLUDE_SYMBOLS:
762 pe_dll_add_excludes (optarg, EXCLUDESYMS);
763 break;
764 case OPTION_EXCLUDE_ALL_SYMBOLS:
765 pe_dll_exclude_all_symbols = 1;
766 break;
767 case OPTION_EXCLUDE_LIBS:
768 pe_dll_add_excludes (optarg, EXCLUDELIBS);
769 break;
770 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
771 pe_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
772 break;
773 case OPTION_KILL_ATS:
774 pe_dll_kill_ats = 1;
775 break;
776 case OPTION_STDCALL_ALIASES:
777 pe_dll_stdcall_aliases = 1;
778 break;
779 case OPTION_ENABLE_STDCALL_FIXUP:
780 pe_enable_stdcall_fixup = 1;
781 break;
782 case OPTION_DISABLE_STDCALL_FIXUP:
783 pe_enable_stdcall_fixup = 0;
784 break;
785 case OPTION_IMPLIB_FILENAME:
786 pe_implib_filename = xstrdup (optarg);
787 break;
788 case OPTION_WARN_DUPLICATE_EXPORTS:
789 pe_dll_warn_dup_exports = 1;
790 break;
791 case OPTION_IMP_COMPAT:
792 pe_dll_compat_implib = 1;
793 break;
794 case OPTION_ENABLE_AUTO_IMAGE_BASE:
795 pe_enable_auto_image_base = 1;
796 break;
797 case OPTION_DISABLE_AUTO_IMAGE_BASE:
798 pe_enable_auto_image_base = 0;
799 break;
800 case OPTION_DLL_SEARCH_PREFIX:
801 pe_dll_search_prefix = xstrdup (optarg);
802 break;
803 case OPTION_NO_DEFAULT_EXCLUDES:
804 pe_dll_do_default_excludes = 0;
805 break;
806 case OPTION_DLL_ENABLE_AUTO_IMPORT:
807 link_info.pei386_auto_import = 1;
808 break;
809 case OPTION_DLL_DISABLE_AUTO_IMPORT:
810 link_info.pei386_auto_import = 0;
811 break;
812 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
813 link_info.pei386_runtime_pseudo_reloc =
814 DEFAULT_PSEUDO_RELOC_VERSION;
815 break;
816 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
817 link_info.pei386_runtime_pseudo_reloc = 1;
818 break;
819 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
820 link_info.pei386_runtime_pseudo_reloc = 2;
821 break;
822 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
823 link_info.pei386_runtime_pseudo_reloc = 0;
824 break;
825 case OPTION_ENABLE_EXTRA_PE_DEBUG:
826 pe_dll_extra_pe_debug = 1;
827 break;
828 #endif
829 case OPTION_LARGE_ADDRESS_AWARE:
830 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
831 break;
832 case OPTION_ENABLE_LONG_SECTION_NAMES:
833 pe_use_coff_long_section_names = 1;
834 break;
835 case OPTION_DISABLE_LONG_SECTION_NAMES:
836 pe_use_coff_long_section_names = 0;
837 break;
838 /* Get DLLCharacteristics bits */
839 case OPTION_DYNAMIC_BASE:
840 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE;
841 break;
842 case OPTION_FORCE_INTEGRITY:
843 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY;
844 break;
845 case OPTION_NX_COMPAT:
846 pe_dll_characteristics |= IMAGE_DLL_CHARACTERISTICS_NX_COMPAT;
847 break;
848 case OPTION_NO_ISOLATION:
849 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_ISOLATION;
850 break;
851 case OPTION_NO_SEH:
852 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_SEH;
853 break;
854 case OPTION_NO_BIND:
855 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_NO_BIND;
856 break;
857 case OPTION_WDM_DRIVER:
858 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_WDM_DRIVER;
859 break;
860 case OPTION_TERMINAL_SERVER_AWARE:
861 pe_dll_characteristics |= IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE;
862 break;
863 }
865 /* Set DLLCharacteristics bits */
866 set_pe_name ("__dll_characteristics__", pe_dll_characteristics);
868 return TRUE;
869 }
870 \f
872 #ifdef DLL_SUPPORT
873 static unsigned long
874 strhash (const char *str)
875 {
876 const unsigned char *s;
877 unsigned long hash;
878 unsigned int c;
879 unsigned int len;
881 hash = 0;
882 len = 0;
883 s = (const unsigned char *) str;
884 while ((c = *s++) != '\0')
885 {
886 hash += c + (c << 17);
887 hash ^= hash >> 2;
888 ++len;
889 }
890 hash += len + (len << 17);
891 hash ^= hash >> 2;
893 return hash;
894 }
896 /* Use the output file to create a image base for relocatable DLLs. */
898 static unsigned long
899 compute_dll_image_base (const char *ofile)
900 {
901 unsigned long hash = strhash (ofile);
902 return 0x61300000 + ((hash << 16) & 0x0FFC0000);
903 }
904 #endif
906 /* Assign values to the special symbols before the linker script is
907 read. */
909 static void
910 gld_${EMULATION_NAME}_set_symbols (void)
911 {
912 /* Run through and invent symbols for all the
913 names and insert the defaults. */
914 int j;
916 is_underscoring ();
918 if (!init[IMAGEBASEOFF].inited)
919 {
920 if (link_info.relocatable)
921 init[IMAGEBASEOFF].value = 0;
922 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
923 {
924 #ifdef DLL_SUPPORT
925 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base
926 ? compute_dll_image_base (output_filename)
927 : NT_DLL_IMAGE_BASE);
928 #else
929 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
930 #endif
931 }
932 else
933 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
934 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
935 }
937 /* Don't do any symbol assignments if this is a relocatable link. */
938 if (link_info.relocatable)
939 return;
941 /* Glue the assignments into the abs section. */
942 push_stat_ptr (&abs_output_section->children);
944 for (j = 0; init[j].ptr; j++)
945 {
946 long val = init[j].value;
947 lang_assignment_statement_type *rv;
949 rv = lang_add_assignment (exp_assop ('=', GET_INIT_SYMBOL_NAME (j),
950 exp_intop (val)));
951 if (init[j].size == sizeof (short))
952 *(short *) init[j].ptr = val;
953 else if (init[j].size == sizeof (int))
954 *(int *) init[j].ptr = val;
955 else if (init[j].size == sizeof (long))
956 *(long *) init[j].ptr = val;
957 /* This might be a long long or other special type. */
958 else if (init[j].size == sizeof (bfd_vma))
959 *(bfd_vma *) init[j].ptr = val;
960 else abort ();
961 if (j == IMAGEBASEOFF)
962 image_base_statement = rv;
963 }
964 /* Restore the pointer. */
965 pop_stat_ptr ();
967 if (pe.FileAlignment > pe.SectionAlignment)
968 {
969 einfo (_("%P: warning, file alignment > section alignment.\n"));
970 }
971 }
973 /* This is called after the linker script and the command line options
974 have been read. */
976 static void
977 gld_${EMULATION_NAME}_after_parse (void)
978 {
979 /* PR ld/6744: Warn the user if they have used an ELF-only
980 option hoping it will work on PE. */
981 if (link_info.export_dynamic)
982 einfo (_("%P: warning: --export-dynamic is not supported for PE "
983 "targets, did you mean --export-all-symbols?\n"));
985 set_entry_point ();
987 after_parse_default ();
988 }
990 /* pe-dll.c directly accesses pe_data_import_dll,
991 so it must be defined outside of #ifdef DLL_SUPPORT.
992 Note - this variable is deliberately not initialised.
993 This allows it to be treated as a common varaible, and only
994 exist in one incarnation in a multiple target enabled linker. */
995 char * pe_data_import_dll;
997 #ifdef DLL_SUPPORT
998 static struct bfd_link_hash_entry *pe_undef_found_sym;
1000 static bfd_boolean
1001 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
1002 {
1003 int sl;
1004 char *string = inf;
1005 const char *hs = h->root.string;
1007 sl = strlen (string);
1008 if (h->type == bfd_link_hash_defined
1009 && ((*hs == '@' && *string == '_'
1010 && strncmp (hs + 1, string + 1, sl - 1) == 0)
1011 || strncmp (hs, string, sl) == 0)
1012 && h->root.string[sl] == '@')
1013 {
1014 pe_undef_found_sym = h;
1015 return FALSE;
1016 }
1017 return TRUE;
1018 }
1020 static void
1021 pe_fixup_stdcalls (void)
1022 {
1023 static int gave_warning_message = 0;
1024 struct bfd_link_hash_entry *undef, *sym;
1026 if (pe_dll_extra_pe_debug)
1027 printf ("%s\n", __FUNCTION__);
1029 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1030 if (undef->type == bfd_link_hash_undefined)
1031 {
1032 char* at = strchr (undef->root.string, '@');
1033 int lead_at = (*undef->root.string == '@');
1034 if (lead_at)
1035 at = strchr (undef->root.string + 1, '@');
1037 if (at || lead_at)
1038 {
1039 /* The symbol is a stdcall symbol, so let's look for a
1040 cdecl symbol with the same name and resolve to that. */
1041 char *cname = xstrdup (undef->root.string);
1043 if (lead_at)
1044 *cname = '_';
1045 at = strchr (cname, '@');
1046 if (at)
1047 *at = 0;
1048 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
1050 if (sym && sym->type == bfd_link_hash_defined)
1051 {
1052 undef->type = bfd_link_hash_defined;
1053 undef->u.def.value = sym->u.def.value;
1054 undef->u.def.section = sym->u.def.section;
1056 if (pe_enable_stdcall_fixup == -1)
1057 {
1058 einfo (_("Warning: resolving %s by linking to %s\n"),
1059 undef->root.string, cname);
1060 if (! gave_warning_message)
1061 {
1062 gave_warning_message = 1;
1063 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1064 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1065 }
1066 }
1067 }
1068 }
1069 else
1070 {
1071 /* The symbol is a cdecl symbol, so we look for stdcall
1072 symbols - which means scanning the whole symbol table. */
1073 pe_undef_found_sym = 0;
1074 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
1075 (char *) undef->root.string);
1076 sym = pe_undef_found_sym;
1077 if (sym)
1078 {
1079 undef->type = bfd_link_hash_defined;
1080 undef->u.def.value = sym->u.def.value;
1081 undef->u.def.section = sym->u.def.section;
1083 if (pe_enable_stdcall_fixup == -1)
1084 {
1085 einfo (_("Warning: resolving %s by linking to %s\n"),
1086 undef->root.string, sym->root.string);
1087 if (! gave_warning_message)
1088 {
1089 gave_warning_message = 1;
1090 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
1091 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
1092 }
1093 }
1094 }
1095 }
1096 }
1097 }
1099 static int
1100 make_import_fixup (arelent *rel, asection *s)
1101 {
1102 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
1103 char addend[4];
1105 if (pe_dll_extra_pe_debug)
1106 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
1107 (unsigned long) rel->address, (long) rel->addend);
1109 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
1110 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
1111 s->owner, s, rel->address);
1113 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
1115 return 1;
1116 }
1118 static void
1119 pe_find_data_imports (void)
1120 {
1121 struct bfd_link_hash_entry *undef, *sym;
1123 if (link_info.pei386_auto_import == 0)
1124 return;
1126 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
1127 {
1128 if (undef->type == bfd_link_hash_undefined)
1129 {
1130 /* C++ symbols are *long*. */
1131 char buf[4096];
1133 if (pe_dll_extra_pe_debug)
1134 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
1136 sprintf (buf, "__imp_%s", undef->root.string);
1138 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
1140 if (sym && sym->type == bfd_link_hash_defined)
1141 {
1142 bfd *b = sym->u.def.section->owner;
1143 asymbol **symbols;
1144 int nsyms, i;
1146 if (link_info.pei386_auto_import == -1)
1147 {
1148 static bfd_boolean warned = FALSE;
1150 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
1151 undef->root.string, buf);
1153 /* PR linker/4844. */
1154 if (! warned)
1155 {
1156 warned = TRUE;
1157 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
1158 This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
1159 }
1160 }
1162 if (!bfd_generic_link_read_symbols (b))
1163 {
1164 einfo (_("%B%F: could not read symbols: %E\n"), b);
1165 return;
1166 }
1168 symbols = bfd_get_outsymbols (b);
1169 nsyms = bfd_get_symcount (b);
1171 for (i = 0; i < nsyms; i++)
1172 {
1173 if (! CONST_STRNEQ (symbols[i]->name,
1174 U ("_head_")))
1175 continue;
1177 if (pe_dll_extra_pe_debug)
1178 printf ("->%s\n", symbols[i]->name);
1180 pe_data_import_dll = (char *) (symbols[i]->name
1181 + U_SIZE ("_head_") - 1);
1182 break;
1183 }
1185 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
1186 make_import_fixup);
1188 /* Let's differentiate it somehow from defined. */
1189 undef->type = bfd_link_hash_defweak;
1190 /* We replace original name with __imp_ prefixed, this
1191 1) may trash memory 2) leads to duplicate symbol generation.
1192 Still, IMHO it's better than having name poluted. */
1193 undef->root.string = sym->root.string;
1194 undef->u.def.value = sym->u.def.value;
1195 undef->u.def.section = sym->u.def.section;
1196 }
1197 }
1198 }
1199 }
1201 static bfd_boolean
1202 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1203 {
1204 if (pe_dll_extra_pe_debug)
1205 printf ("+%s\n", h->string);
1207 return TRUE;
1208 }
1209 #endif /* DLL_SUPPORT */
1211 static void
1212 debug_section_p (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
1213 {
1214 int *found = (int *) obj;
1215 if (strncmp (".debug_", sect->name, sizeof (".debug_") - 1) == 0)
1216 *found = 1;
1217 }
1219 static void
1220 gld_${EMULATION_NAME}_after_open (void)
1221 {
1222 #ifdef DLL_SUPPORT
1223 if (pe_dll_extra_pe_debug)
1224 {
1225 bfd *a;
1226 struct bfd_link_hash_entry *sym;
1228 printf ("%s()\n", __FUNCTION__);
1230 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1231 printf ("-%s\n", sym->root.string);
1232 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1234 for (a = link_info.input_bfds; a; a = a->link_next)
1235 printf ("*%s\n",a->filename);
1236 }
1237 #endif
1239 /* Pass the wacky PE command line options into the output bfd.
1240 FIXME: This should be done via a function, rather than by
1241 including an internal BFD header. */
1243 if (coff_data (link_info.output_bfd) == NULL
1244 || coff_data (link_info.output_bfd)->pe == 0)
1245 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1246 link_info.output_bfd);
1248 pe_data (link_info.output_bfd)->pe_opthdr = pe;
1249 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1250 pe_data (link_info.output_bfd)->real_flags |= real_flags;
1252 /* At this point we must decide whether to use long section names
1253 in the output or not. If the user hasn't explicitly specified
1254 on the command line, we leave it to the default for the format
1255 (object files yes, image files no), except if there is debug
1256 information present; GDB relies on the long section names to
1257 find it, so enable it in that case. */
1258 if (pe_use_coff_long_section_names < 0 && link_info.strip == strip_none)
1259 {
1260 /* Iterate over all sections of all input BFDs, checking
1261 for any that begin 'debug_' and are long names. */
1262 LANG_FOR_EACH_INPUT_STATEMENT (is)
1263 {
1264 int found_debug = 0;
1265 bfd_map_over_sections (is->the_bfd, debug_section_p, &found_debug);
1266 if (found_debug)
1267 {
1268 pe_use_coff_long_section_names = 1;
1269 break;
1270 }
1271 }
1272 }
1274 pe_output_file_set_long_section_names (link_info.output_bfd);
1276 #ifdef DLL_SUPPORT
1277 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1278 pe_fixup_stdcalls ();
1280 pe_process_import_defs (link_info.output_bfd, &link_info);
1282 pe_find_data_imports ();
1284 /* As possibly new symbols are added by imports, we rerun
1285 stdcall/fastcall fixup here. */
1286 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
1287 pe_fixup_stdcalls ();
1289 #if defined (TARGET_IS_i386pe) \
1290 || defined (TARGET_IS_armpe) \
1291 || defined (TARGET_IS_arm_epoc_pe) \
1292 || defined (TARGET_IS_arm_wince_pe)
1293 if (!link_info.relocatable)
1294 pe_dll_build_sections (link_info.output_bfd, &link_info);
1295 #else
1296 if (link_info.shared)
1297 pe_dll_build_sections (link_info.output_bfd, &link_info);
1298 else
1299 pe_exe_build_sections (link_info.output_bfd, &link_info);
1300 #endif
1301 #endif /* DLL_SUPPORT */
1303 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1304 if (strstr (bfd_get_target (link_info.output_bfd), "arm") == NULL)
1305 {
1306 /* The arm backend needs special fields in the output hash structure.
1307 These will only be created if the output format is an arm format,
1308 hence we do not support linking and changing output formats at the
1309 same time. Use a link followed by objcopy to change output formats. */
1310 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1311 return;
1312 }
1313 {
1314 /* Find a BFD that can hold the interworking stubs. */
1315 LANG_FOR_EACH_INPUT_STATEMENT (is)
1316 {
1317 if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info))
1318 break;
1319 }
1320 }
1321 #endif
1323 {
1324 /* This next chunk of code tries to detect the case where you have
1325 two import libraries for the same DLL (specifically,
1326 symbolically linking libm.a and libc.a in cygwin to
1327 libcygwin.a). In those cases, it's possible for function
1328 thunks from the second implib to be used but without the
1329 head/tail objects, causing an improper import table. We detect
1330 those cases and rename the "other" import libraries to match
1331 the one the head/tail come from, so that the linker will sort
1332 things nicely and produce a valid import table. */
1334 LANG_FOR_EACH_INPUT_STATEMENT (is)
1335 {
1336 if (is->the_bfd->my_archive)
1337 {
1338 int idata2 = 0, reloc_count=0, is_imp = 0;
1339 asection *sec;
1341 /* See if this is an import library thunk. */
1342 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1343 {
1344 if (strcmp (sec->name, ".idata\$2") == 0)
1345 idata2 = 1;
1346 if (CONST_STRNEQ (sec->name, ".idata\$"))
1347 is_imp = 1;
1348 reloc_count += sec->reloc_count;
1349 }
1351 if (is_imp && !idata2 && reloc_count)
1352 {
1353 /* It is, look for the reference to head and see if it's
1354 from our own library. */
1355 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1356 {
1357 int i;
1358 long relsize;
1359 asymbol **symbols;
1360 arelent **relocs;
1361 int nrelocs;
1363 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1364 if (relsize < 1)
1365 break;
1367 if (!bfd_generic_link_read_symbols (is->the_bfd))
1368 {
1369 einfo (_("%B%F: could not read symbols: %E\n"),
1370 is->the_bfd);
1371 return;
1372 }
1373 symbols = bfd_get_outsymbols (is->the_bfd);
1375 relocs = xmalloc ((size_t) relsize);
1376 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1377 relocs, symbols);
1378 if (nrelocs < 0)
1379 {
1380 free (relocs);
1381 einfo ("%X%P: unable to process relocs: %E\n");
1382 return;
1383 }
1385 for (i = 0; i < nrelocs; i++)
1386 {
1387 struct bfd_symbol *s;
1388 struct bfd_link_hash_entry * blhe;
1389 char *other_bfd_filename;
1390 char *n;
1392 s = (relocs[i]->sym_ptr_ptr)[0];
1394 if (s->flags & BSF_LOCAL)
1395 continue;
1397 /* Thunk section with reloc to another bfd. */
1398 blhe = bfd_link_hash_lookup (link_info.hash,
1399 s->name,
1400 FALSE, FALSE, TRUE);
1402 if (blhe == NULL
1403 || blhe->type != bfd_link_hash_defined)
1404 continue;
1406 other_bfd_filename
1407 = blhe->u.def.section->owner->my_archive
1408 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1409 : bfd_get_filename (blhe->u.def.section->owner);
1411 if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
1412 other_bfd_filename) == 0)
1413 continue;
1415 /* Rename this implib to match the other one. */
1416 n = xmalloc (strlen (other_bfd_filename) + 1);
1417 strcpy (n, other_bfd_filename);
1418 is->the_bfd->my_archive->filename = n;
1419 }
1421 free (relocs);
1422 /* Note - we do not free the symbols,
1423 they are now cached in the BFD. */
1424 }
1425 }
1426 }
1427 }
1428 }
1430 {
1431 int is_ms_arch = 0;
1432 bfd *cur_arch = 0;
1433 lang_input_statement_type *is2;
1434 lang_input_statement_type *is3;
1436 /* Careful - this is a shell script. Watch those dollar signs! */
1437 /* Microsoft import libraries have every member named the same,
1438 and not in the right order for us to link them correctly. We
1439 must detect these and rename the members so that they'll link
1440 correctly. There are three types of objects: the head, the
1441 thunks, and the sentinel(s). The head is easy; it's the one
1442 with idata2. We assume that the sentinels won't have relocs,
1443 and the thunks will. It's easier than checking the symbol
1444 table for external references. */
1445 LANG_FOR_EACH_INPUT_STATEMENT (is)
1446 {
1447 if (is->the_bfd->my_archive)
1448 {
1449 char *pnt;
1450 bfd *arch = is->the_bfd->my_archive;
1452 if (cur_arch != arch)
1453 {
1454 cur_arch = arch;
1455 is_ms_arch = 1;
1457 for (is3 = is;
1458 is3 && is3->the_bfd->my_archive == arch;
1459 is3 = (lang_input_statement_type *) is3->next)
1460 {
1461 /* A MS dynamic import library can also contain static
1462 members, so look for the first element with a .dll
1463 extension, and use that for the remainder of the
1464 comparisons. */
1465 pnt = strrchr (is3->the_bfd->filename, '.');
1466 if (pnt != NULL && strcmp (pnt, ".dll") == 0)
1467 break;
1468 }
1470 if (is3 == NULL)
1471 is_ms_arch = 0;
1472 else
1473 {
1474 /* OK, found one. Now look to see if the remaining
1475 (dynamic import) members use the same name. */
1476 for (is2 = is;
1477 is2 && is2->the_bfd->my_archive == arch;
1478 is2 = (lang_input_statement_type *) is2->next)
1479 {
1480 /* Skip static members, ie anything with a .obj
1481 extension. */
1482 pnt = strrchr (is2->the_bfd->filename, '.');
1483 if (pnt != NULL && strcmp (pnt, ".obj") == 0)
1484 continue;
1486 if (strcmp (is3->the_bfd->filename,
1487 is2->the_bfd->filename))
1488 {
1489 is_ms_arch = 0;
1490 break;
1491 }
1492 }
1493 }
1494 }
1496 /* This fragment might have come from an .obj file in a Microsoft
1497 import, and not an actual import record. If this is the case,
1498 then leave the filename alone. */
1499 pnt = strrchr (is->the_bfd->filename, '.');
1501 if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
1502 {
1503 int idata2 = 0, reloc_count=0;
1504 asection *sec;
1505 char *new_name, seq;
1507 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1508 {
1509 if (strcmp (sec->name, ".idata\$2") == 0)
1510 idata2 = 1;
1511 reloc_count += sec->reloc_count;
1512 }
1514 if (idata2) /* .idata2 is the TOC */
1515 seq = 'a';
1516 else if (reloc_count > 0) /* thunks */
1517 seq = 'b';
1518 else /* sentinel */
1519 seq = 'c';
1521 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1522 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1523 is->the_bfd->filename = new_name;
1525 new_name = xmalloc (strlen (is->filename) + 3);
1526 sprintf (new_name, "%s.%c", is->filename, seq);
1527 is->filename = new_name;
1528 }
1529 }
1530 }
1531 }
1533 {
1534 /* The following chunk of code tries to identify jump stubs in
1535 import libraries which are dead code and eliminates them
1536 from the final link. For each exported symbol <sym>, there
1537 is a object file in the import library with a .text section
1538 and several .idata\$* sections. The .text section contains the
1539 symbol definition for <sym> which is a jump stub of the form
1540 jmp *__imp_<sym>. The .idata\$5 contains the symbol definition
1541 for __imp_<sym> which is the address of the slot for <sym> in
1542 the import address table. When a symbol is imported explicitly
1543 using __declspec(dllimport) declaration, the compiler generates
1544 a reference to __imp_<sym> which directly resolves to the
1545 symbol in .idata\$5, in which case the jump stub code is not
1546 needed. The following code tries to identify jump stub sections
1547 in import libraries which are not referred to by anyone and
1548 marks them for exclusion from the final link. */
1549 LANG_FOR_EACH_INPUT_STATEMENT (is)
1550 {
1551 if (is->the_bfd->my_archive)
1552 {
1553 int is_imp = 0;
1554 asection *sec, *stub_sec = NULL;
1556 /* See if this is an import library thunk. */
1557 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1558 {
1559 if (strncmp (sec->name, ".idata\$", 7) == 0)
1560 is_imp = 1;
1561 /* The section containing the jmp stub has code
1562 and has a reloc. */
1563 if ((sec->flags & SEC_CODE) && sec->reloc_count)
1564 stub_sec = sec;
1565 }
1567 if (is_imp && stub_sec)
1568 {
1569 asymbol **symbols;
1570 long nsyms, src_count;
1571 struct bfd_link_hash_entry * blhe;
1573 if (!bfd_generic_link_read_symbols (is->the_bfd))
1574 {
1575 einfo (_("%B%F: could not read symbols: %E\n"),
1576 is->the_bfd);
1577 return;
1578 }
1579 symbols = bfd_get_outsymbols (is->the_bfd);
1580 nsyms = bfd_get_symcount (is->the_bfd);
1582 for (src_count = 0; src_count < nsyms; src_count++)
1583 {
1584 if (symbols[src_count]->section->id == stub_sec->id)
1585 {
1586 /* This symbol belongs to the section containing
1587 the stub. */
1588 blhe = bfd_link_hash_lookup (link_info.hash,
1589 symbols[src_count]->name,
1590 FALSE, FALSE, TRUE);
1591 /* If the symbol in the stub section has no other
1592 undefined references, exclude the stub section
1593 from the final link. */
1594 if (blhe && (blhe->type == bfd_link_hash_defined)
1595 && (blhe->u.undef.next == NULL))
1596 stub_sec->flags |= SEC_EXCLUDE;
1597 }
1598 }
1599 }
1600 }
1601 }
1602 }
1603 }
1604 \f
1605 static void
1606 gld_${EMULATION_NAME}_before_allocation (void)
1607 {
1608 #ifdef TARGET_IS_ppcpe
1609 /* Here we rummage through the found bfds to collect toc information. */
1610 {
1611 LANG_FOR_EACH_INPUT_STATEMENT (is)
1612 {
1613 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1614 {
1615 /* xgettext:c-format */
1616 einfo (_("Errors encountered processing file %s\n"), is->filename);
1617 }
1618 }
1619 }
1621 /* We have seen it all. Allocate it, and carry on. */
1622 ppc_allocate_toc_section (&link_info);
1623 #endif /* TARGET_IS_ppcpe */
1625 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1626 /* FIXME: we should be able to set the size of the interworking stub
1627 section.
1629 Here we rummage through the found bfds to collect glue
1630 information. FIXME: should this be based on a command line
1631 option? krk@cygnus.com. */
1632 {
1633 LANG_FOR_EACH_INPUT_STATEMENT (is)
1634 {
1635 if (! bfd_arm_process_before_allocation
1636 (is->the_bfd, & link_info, support_old_code))
1637 {
1638 /* xgettext:c-format */
1639 einfo (_("Errors encountered processing file %s for interworking\n"),
1640 is->filename);
1641 }
1642 }
1643 }
1645 /* We have seen it all. Allocate it, and carry on. */
1646 bfd_arm_allocate_interworking_sections (& link_info);
1647 #endif /* TARGET_IS_armpe || TARGET_IS_arm_epoc_pe || TARGET_IS_arm_wince_pe */
1649 before_allocation_default ();
1650 }
1651 \f
1652 #ifdef DLL_SUPPORT
1653 /* This is called when an input file isn't recognized as a BFD. We
1654 check here for .DEF files and pull them in automatically. */
1656 static int
1657 saw_option (char *option)
1658 {
1659 int i;
1661 for (i = 0; init[i].ptr; i++)
1662 if (strcmp (GET_INIT_SYMBOL_NAME (i), option) == 0)
1663 return init[i].inited;
1664 return 0;
1665 }
1666 #endif /* DLL_SUPPORT */
1668 static bfd_boolean
1669 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1670 {
1671 #ifdef DLL_SUPPORT
1672 const char *ext = entry->filename + strlen (entry->filename) - 4;
1674 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1675 {
1676 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1678 if (pe_def_file)
1679 {
1680 int i, buflen=0, len;
1681 char *buf;
1683 for (i = 0; i < pe_def_file->num_exports; i++)
1684 {
1685 len = strlen (pe_def_file->exports[i].internal_name);
1686 if (buflen < len + 2)
1687 buflen = len + 2;
1688 }
1690 buf = xmalloc (buflen);
1692 for (i = 0; i < pe_def_file->num_exports; i++)
1693 {
1694 struct bfd_link_hash_entry *h;
1696 sprintf (buf, "%s%s", U (""),
1697 pe_def_file->exports[i].internal_name);
1699 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1700 if (h == (struct bfd_link_hash_entry *) NULL)
1701 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1702 if (h->type == bfd_link_hash_new)
1703 {
1704 h->type = bfd_link_hash_undefined;
1705 h->u.undef.abfd = NULL;
1706 bfd_link_add_undef (link_info.hash, h);
1707 }
1708 }
1709 free (buf);
1711 /* def_file_print (stdout, pe_def_file); */
1712 if (pe_def_file->is_dll == 1)
1713 link_info.shared = 1;
1715 if (pe_def_file->base_address != (bfd_vma)(-1))
1716 {
1717 pe.ImageBase
1718 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1719 = init[IMAGEBASEOFF].value
1720 = pe_def_file->base_address;
1721 init[IMAGEBASEOFF].inited = 1;
1722 if (image_base_statement)
1723 image_base_statement->exp = exp_assop ('=', "__image_base__",
1724 exp_intop (pe.ImageBase));
1725 }
1727 if (pe_def_file->stack_reserve != -1
1728 && ! saw_option ("__size_of_stack_reserve__"))
1729 {
1730 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1731 if (pe_def_file->stack_commit != -1)
1732 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1733 }
1734 if (pe_def_file->heap_reserve != -1
1735 && ! saw_option ("__size_of_heap_reserve__"))
1736 {
1737 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1738 if (pe_def_file->heap_commit != -1)
1739 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1740 }
1741 return TRUE;
1742 }
1743 }
1744 #endif
1745 return FALSE;
1746 }
1748 static bfd_boolean
1749 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1750 {
1751 #ifdef DLL_SUPPORT
1752 #ifdef TARGET_IS_i386pe
1753 pe_dll_id_target ("pei-i386");
1754 #endif
1755 #ifdef TARGET_IS_shpe
1756 pe_dll_id_target ("pei-shl");
1757 #endif
1758 #ifdef TARGET_IS_mipspe
1759 pe_dll_id_target ("pei-mips");
1760 #endif
1761 #ifdef TARGET_IS_armpe
1762 pe_dll_id_target ("pei-arm-little");
1763 #endif
1764 #ifdef TARGET_IS_arm_epoc_pe
1765 pe_dll_id_target ("epoc-pei-arm-little");
1766 #endif
1767 #ifdef TARGET_IS_arm_wince_pe
1768 pe_dll_id_target ("pei-arm-wince-little");
1769 #endif
1770 if (pe_bfd_is_dll (entry->the_bfd))
1771 return pe_implied_import_dll (entry->filename);
1772 #endif
1773 return FALSE;
1774 }
1776 static void
1777 gld_${EMULATION_NAME}_finish (void)
1778 {
1779 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe)
1780 struct bfd_link_hash_entry * h;
1782 if (thumb_entry_symbol != NULL)
1783 {
1784 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1785 FALSE, FALSE, TRUE);
1787 if (h != (struct bfd_link_hash_entry *) NULL
1788 && (h->type == bfd_link_hash_defined
1789 || h->type == bfd_link_hash_defweak)
1790 && h->u.def.section->output_section != NULL)
1791 {
1792 static char buffer[32];
1793 bfd_vma val;
1795 /* Special procesing is required for a Thumb entry symbol. The
1796 bottom bit of its address must be set. */
1797 val = (h->u.def.value
1798 + bfd_get_section_vma (link_info.output_bfd,
1799 h->u.def.section->output_section)
1800 + h->u.def.section->output_offset);
1802 val |= 1;
1804 /* Now convert this value into a string and store it in entry_symbol
1805 where the lang_finish() function will pick it up. */
1806 buffer[0] = '0';
1807 buffer[1] = 'x';
1809 sprintf_vma (buffer + 2, val);
1811 if (entry_symbol.name != NULL && entry_from_cmdline)
1812 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1813 thumb_entry_symbol, entry_symbol.name);
1814 entry_symbol.name = buffer;
1815 }
1816 else
1817 einfo (_("%P: warning: cannot find thumb start symbol %s\n"), thumb_entry_symbol);
1818 }
1819 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) || defined(TARGET_IS_arm_wince_pe) */
1821 finish_default ();
1823 #ifdef DLL_SUPPORT
1824 if (link_info.shared
1825 #if !defined(TARGET_IS_shpe) && !defined(TARGET_IS_mipspe)
1826 || (!link_info.relocatable && pe_def_file->num_exports != 0)
1827 #endif
1828 )
1829 {
1830 pe_dll_fill_sections (link_info.output_bfd, &link_info);
1831 if (pe_implib_filename)
1832 pe_dll_generate_implib (pe_def_file, pe_implib_filename, &link_info);
1833 }
1834 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1835 /* ARM doesn't need relocs. */
1836 else
1837 {
1838 pe_exe_fill_sections (link_info.output_bfd, &link_info);
1839 }
1840 #endif
1842 if (pe_out_def_filename)
1843 pe_dll_generate_def_file (pe_out_def_filename);
1844 #endif /* DLL_SUPPORT */
1846 /* I don't know where .idata gets set as code, but it shouldn't be. */
1847 {
1848 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
1850 if (asec)
1851 {
1852 asec->flags &= ~SEC_CODE;
1853 asec->flags |= SEC_DATA;
1854 }
1855 }
1856 }
1858 \f
1859 /* Place an orphan section.
1861 We use this to put sections in a reasonable place in the file, and
1862 to ensure that they are aligned as required.
1864 We handle grouped sections here as well. A section named .foo\$nn
1865 goes into the output section .foo. All grouped sections are sorted
1866 by name.
1868 Grouped sections for the default sections are handled by the
1869 default linker script using wildcards, and are sorted by
1870 sort_sections. */
1872 static lang_output_section_statement_type *
1873 gld_${EMULATION_NAME}_place_orphan (asection *s,
1874 const char *secname,
1875 int constraint)
1876 {
1877 const char *orig_secname = secname;
1878 char *dollar = NULL;
1879 lang_output_section_statement_type *os;
1880 lang_statement_list_type add_child;
1881 lang_output_section_statement_type *match_by_name = NULL;
1882 lang_statement_union_type **pl;
1884 /* Look through the script to see where to place this section. */
1885 if (!link_info.relocatable
1886 && (dollar = strchr (secname, '\$')) != NULL)
1887 {
1888 size_t len = dollar - secname;
1889 char *newname = xmalloc (len + 1);
1890 memcpy (newname, secname, len);
1891 newname[len] = '\0';
1892 secname = newname;
1893 }
1895 lang_list_init (&add_child);
1897 os = NULL;
1898 if (constraint == 0)
1899 for (os = lang_output_section_find (secname);
1900 os != NULL;
1901 os = next_matching_output_section_statement (os, 0))
1902 {
1903 /* If we don't match an existing output section, tell
1904 lang_insert_orphan to create a new output section. */
1905 constraint = SPECIAL;
1907 if (os->bfd_section != NULL
1908 && (os->bfd_section->flags == 0
1909 || ((s->flags ^ os->bfd_section->flags)
1910 & (SEC_LOAD | SEC_ALLOC)) == 0))
1911 {
1912 /* We already have an output section statement with this
1913 name, and its bfd section has compatible flags.
1914 If the section already exists but does not have any flags set,
1915 then it has been created by the linker, probably as a result of
1916 a --section-start command line switch. */
1917 lang_add_section (&add_child, s, os);
1918 break;
1919 }
1921 /* Save unused output sections in case we can match them
1922 against orphans later. */
1923 if (os->bfd_section == NULL)
1924 match_by_name = os;
1925 }
1927 /* If we didn't match an active output section, see if we matched an
1928 unused one and use that. */
1929 if (os == NULL && match_by_name)
1930 {
1931 lang_add_section (&match_by_name->children, s, match_by_name);
1932 return match_by_name;
1933 }
1935 if (os == NULL)
1936 {
1937 static struct orphan_save hold[] =
1938 {
1939 { ".text",
1940 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1941 0, 0, 0, 0 },
1942 { ".idata",
1943 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1944 0, 0, 0, 0 },
1945 { ".rdata",
1946 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1947 0, 0, 0, 0 },
1948 { ".data",
1949 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1950 0, 0, 0, 0 },
1951 { ".bss",
1952 SEC_ALLOC,
1953 0, 0, 0, 0 }
1954 };
1955 enum orphan_save_index
1956 {
1957 orphan_text = 0,
1958 orphan_idata,
1959 orphan_rodata,
1960 orphan_data,
1961 orphan_bss
1962 };
1963 static int orphan_init_done = 0;
1964 struct orphan_save *place;
1965 lang_output_section_statement_type *after;
1966 etree_type *address;
1968 if (!orphan_init_done)
1969 {
1970 struct orphan_save *ho;
1971 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1972 if (ho->name != NULL)
1973 {
1974 ho->os = lang_output_section_find (ho->name);
1975 if (ho->os != NULL && ho->os->flags == 0)
1976 ho->os->flags = ho->flags;
1977 }
1978 orphan_init_done = 1;
1979 }
1981 /* Try to put the new output section in a reasonable place based
1982 on the section name and section flags. */
1984 place = NULL;
1985 if ((s->flags & SEC_ALLOC) == 0)
1986 ;
1987 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1988 place = &hold[orphan_bss];
1989 else if ((s->flags & SEC_READONLY) == 0)
1990 place = &hold[orphan_data];
1991 else if ((s->flags & SEC_CODE) == 0)
1992 {
1993 place = (!strncmp (secname, ".idata\$", 7) ? &hold[orphan_idata]
1994 : &hold[orphan_rodata]);
1995 }
1996 else
1997 place = &hold[orphan_text];
1999 after = NULL;
2000 if (place != NULL)
2001 {
2002 if (place->os == NULL)
2003 place->os = lang_output_section_find (place->name);
2004 after = place->os;
2005 if (after == NULL)
2006 after = lang_output_section_find_by_flags (s, &place->os, NULL);
2007 if (after == NULL)
2008 /* *ABS* is always the first output section statement. */
2009 after = (&lang_output_section_statement.head
2010 ->output_section_statement);
2011 }
2013 /* All sections in an executable must be aligned to a page boundary. */
2014 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
2015 os = lang_insert_orphan (s, secname, constraint, after, place, address,
2016 &add_child);
2017 }
2019 /* If the section name has a '\$', sort it with the other '\$'
2020 sections. */
2021 for (pl = &os->children.head; *pl != NULL; pl = &(*pl)->header.next)
2022 {
2023 lang_input_section_type *ls;
2024 const char *lname;
2026 if ((*pl)->header.type != lang_input_section_enum)
2027 continue;
2029 ls = &(*pl)->input_section;
2031 lname = bfd_get_section_name (ls->section->owner, ls->section);
2032 if (strchr (lname, '\$') != NULL
2033 && (dollar == NULL || strcmp (orig_secname, lname) < 0))
2034 break;
2035 }
2037 if (add_child.head != NULL)
2038 {
2039 *add_child.tail = *pl;
2040 *pl = add_child.head;
2041 }
2043 return os;
2044 }
2046 static bfd_boolean
2047 gld_${EMULATION_NAME}_open_dynamic_archive
2048 (const char *arch ATTRIBUTE_UNUSED,
2049 search_dirs_type *search,
2050 lang_input_statement_type *entry)
2051 {
2052 static const struct
2053 {
2054 const char * format;
2055 bfd_boolean use_prefix;
2056 }
2057 libname_fmt [] =
2058 {
2059 /* Preferred explicit import library for dll's. */
2060 { "lib%s.dll.a", FALSE },
2061 /* Alternate explicit import library for dll's. */
2062 { "%s.dll.a", FALSE },
2063 /* "libfoo.a" could be either an import lib or a static lib.
2064 For backwards compatibility, libfoo.a needs to precede
2065 libfoo.dll and foo.dll in the search. */
2066 { "lib%s.a", FALSE },
2067 /* The 'native' spelling of an import lib name is "foo.lib". */
2068 { "%s.lib", FALSE },
2069 #ifdef DLL_SUPPORT
2070 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
2071 { "%s%s.dll", TRUE },
2072 #endif
2073 /* Try "libfoo.dll" (default preferred dll name). */
2074 { "lib%s.dll", FALSE },
2075 /* Finally try 'native' dll name "foo.dll". */
2076 { "%s.dll", FALSE },
2077 /* Note: If adding more formats to this table, make sure to check to
2078 see if their length is longer than libname_fmt[0].format, and if
2079 so, update the call to xmalloc() below. */
2080 { NULL, FALSE }
2081 };
2082 static unsigned int format_max_len = 0;
2083 const char * filename;
2084 char * full_string;
2085 char * base_string;
2086 unsigned int i;
2089 if (! entry->maybe_archive)
2090 return FALSE;
2092 filename = entry->filename;
2094 if (format_max_len == 0)
2095 /* We need to allow space in the memory that we are going to allocate
2096 for the characters in the format string. Since the format array is
2097 static we only need to calculate this information once. In theory
2098 this value could also be computed statically, but this introduces
2099 the possibility for a discrepancy and hence a possible memory
2100 corruption. The lengths we compute here will be too long because
2101 they will include any formating characters (%s) in the strings, but
2102 this will not matter. */
2103 for (i = 0; libname_fmt[i].format; i++)
2104 if (format_max_len < strlen (libname_fmt[i].format))
2105 format_max_len = strlen (libname_fmt[i].format);
2107 full_string = xmalloc (strlen (search->name)
2108 + strlen (filename)
2109 + format_max_len
2110 #ifdef DLL_SUPPORT
2111 + (pe_dll_search_prefix
2112 ? strlen (pe_dll_search_prefix) : 0)
2113 #endif
2114 /* Allow for the terminating NUL and for the path
2115 separator character that is inserted between
2116 search->name and the start of the format string. */
2117 + 2);
2119 sprintf (full_string, "%s/", search->name);
2120 base_string = full_string + strlen (full_string);
2122 for (i = 0; libname_fmt[i].format; i++)
2123 {
2124 #ifdef DLL_SUPPORT
2125 if (libname_fmt[i].use_prefix)
2126 {
2127 if (!pe_dll_search_prefix)
2128 continue;
2129 sprintf (base_string, libname_fmt[i].format, pe_dll_search_prefix, filename);
2130 }
2131 else
2132 #endif
2133 sprintf (base_string, libname_fmt[i].format, filename);
2135 if (ldfile_try_open_bfd (full_string, entry))
2136 break;
2137 }
2139 if (!libname_fmt[i].format)
2140 {
2141 free (full_string);
2142 return FALSE;
2143 }
2145 entry->filename = full_string;
2147 return TRUE;
2148 }
2150 static int
2151 gld_${EMULATION_NAME}_find_potential_libraries
2152 (char *name, lang_input_statement_type *entry)
2153 {
2154 return ldfile_open_file_search (name, entry, "", ".lib");
2155 }
2156 \f
2157 static char *
2158 gld_${EMULATION_NAME}_get_script (int *isfile)
2159 EOF
2160 # Scripts compiled in.
2161 # sed commands to quote an ld script as a C string.
2162 sc="-f stringify.sed"
2164 fragment <<EOF
2165 {
2166 *isfile = 0;
2168 if (link_info.relocatable && config.build_constructors)
2169 return
2170 EOF
2171 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2172 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
2173 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2174 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2175 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2176 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2177 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2178 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
2179 echo ' ; else if (link_info.pei386_auto_import == 1 && (MERGE_RDATA_V2 || link_info.pei386_runtime_pseudo_reloc != 2)) return' >> e${EMULATION_NAME}.c
2180 sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
2181 fi
2182 echo ' ; else return' >> e${EMULATION_NAME}.c
2183 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2184 echo '; }' >> e${EMULATION_NAME}.c
2186 fragment <<EOF
2189 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2190 {
2191 gld_${EMULATION_NAME}_before_parse,
2192 syslib_default,
2193 hll_default,
2194 gld_${EMULATION_NAME}_after_parse,
2195 gld_${EMULATION_NAME}_after_open,
2196 after_allocation_default,
2197 set_output_arch_default,
2198 ldemul_default_target,
2199 gld_${EMULATION_NAME}_before_allocation,
2200 gld_${EMULATION_NAME}_get_script,
2201 "${EMULATION_NAME}",
2202 "${OUTPUT_FORMAT}",
2203 gld_${EMULATION_NAME}_finish,
2204 NULL, /* Create output section statements. */
2205 gld_${EMULATION_NAME}_open_dynamic_archive,
2206 gld_${EMULATION_NAME}_place_orphan,
2207 gld_${EMULATION_NAME}_set_symbols,
2208 NULL, /* parse_args */
2209 gld${EMULATION_NAME}_add_options,
2210 gld${EMULATION_NAME}_handle_option,
2211 gld_${EMULATION_NAME}_unrecognized_file,
2212 gld_${EMULATION_NAME}_list_options,
2213 gld_${EMULATION_NAME}_recognized_file,
2214 gld_${EMULATION_NAME}_find_potential_libraries,
2215 NULL /* new_vers_pattern. */
2216 };
2217 EOF