| blob | df7692d680c169052d99cc8a1306482dc00d2882 |
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 cat >>e${EMULATION_NAME}.c <<EOF
11 /* This file is part of GLD, the Gnu Linker.
12 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
13 2005 Free Software Foundation, Inc.
15 This program is free software; you can redistribute it and/or modify
16 it under the terms of the GNU General Public License as published by
17 the Free Software Foundation; either version 2 of the License, or
18 (at your option) any later version.
20 This program is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with this program; if not, write to the Free Software
27 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
29 /* For WINDOWS_NT */
30 /* The original file generated returned different default scripts depending
31 on whether certain switches were set, but these switches pertain to the
32 Linux system and that particular version of coff. In the NT case, we
33 only determine if the subsystem is console or windows in order to select
34 the correct entry point by default. */
36 #define TARGET_IS_${EMULATION_NAME}
38 /* Do this before including bfd.h, so we prototype the right functions. */
39 #ifdef TARGET_IS_arm_epoc_pe
40 #define bfd_arm_pe_allocate_interworking_sections \
41 bfd_arm_epoc_pe_allocate_interworking_sections
42 #define bfd_arm_pe_get_bfd_for_interworking \
43 bfd_arm_epoc_pe_get_bfd_for_interworking
44 #define bfd_arm_pe_process_before_allocation \
45 bfd_arm_epoc_pe_process_before_allocation
46 #endif
48 #include "bfd.h"
49 #include "sysdep.h"
50 #include "bfdlink.h"
51 #include "getopt.h"
52 #include "libiberty.h"
53 #include "ld.h"
54 #include "ldmain.h"
55 #include "ldexp.h"
56 #include "ldlang.h"
57 #include "ldfile.h"
58 #include "ldemul.h"
59 #include <ldgram.h>
60 #include "ldlex.h"
61 #include "ldmisc.h"
62 #include "ldctor.h"
63 #include "coff/internal.h"
65 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
66 header in generic PE code. */
67 #include "coff/i386.h"
68 #include "coff/pe.h"
70 /* FIXME: This is a BFD internal header file, and we should not be
71 using it here. */
72 #include "../bfd/libcoff.h"
74 #include "deffile.h"
75 #include "pe-dll.h"
76 #include "safe-ctype.h"
78 /* Permit the emulation parameters to override the default section
79 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
80 it seem that include/coff/internal.h should not define
81 PE_DEF_SECTION_ALIGNMENT. */
82 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
83 #undef PE_DEF_SECTION_ALIGNMENT
84 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
85 #endif
87 #if defined(TARGET_IS_i386pe)
88 #define DLL_SUPPORT
89 #endif
90 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe) || defined(TARGET_IS_armpe)
91 #define DLL_SUPPORT
92 #endif
94 #if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
95 #define PE_DEF_SUBSYSTEM 3
96 #else
97 #undef NT_EXE_IMAGE_BASE
98 #undef PE_DEF_SECTION_ALIGNMENT
99 #undef PE_DEF_FILE_ALIGNMENT
100 #define NT_EXE_IMAGE_BASE 0x00010000
101 #ifdef TARGET_IS_armpe
102 #define PE_DEF_SECTION_ALIGNMENT 0x00001000
103 #define PE_DEF_SUBSYSTEM 9
104 #else
105 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
106 #define PE_DEF_SUBSYSTEM 2
107 #endif
108 #define PE_DEF_FILE_ALIGNMENT 0x00000200
109 #endif
112 static struct internal_extra_pe_aouthdr pe;
113 static int dll;
114 static flagword real_flags = 0;
115 static int support_old_code = 0;
116 static char * thumb_entry_symbol = NULL;
117 static lang_assignment_statement_type *image_base_statement = 0;
119 #ifdef DLL_SUPPORT
120 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable. */
121 static char *pe_out_def_filename = NULL;
122 static char *pe_implib_filename = NULL;
123 static int pe_enable_auto_image_base = 0;
124 static char *pe_dll_search_prefix = NULL;
125 #endif
127 extern const char *output_filename;
129 static void
130 gld_${EMULATION_NAME}_before_parse (void)
131 {
132 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
133 output_filename = "${EXECUTABLE_NAME:-a.exe}";
134 #ifdef DLL_SUPPORT
135 config.dynamic_link = TRUE;
136 config.has_shared = 1;
137 link_info.pei386_auto_import = -1;
138 link_info.pei386_runtime_pseudo_reloc = -1;
140 #if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
141 #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe
142 lang_default_entry ("WinMainCRTStartup");
143 #else
144 lang_default_entry ("_WinMainCRTStartup");
145 #endif
146 #endif
147 #endif
148 }
149 \f
150 /* PE format extra command line options. */
152 /* Used for setting flags in the PE header. */
153 #define OPTION_BASE_FILE (300 + 1)
154 #define OPTION_DLL (OPTION_BASE_FILE + 1)
155 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
156 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
157 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
158 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
159 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
160 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
161 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
162 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
163 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
164 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
165 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
166 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
167 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
168 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
169 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
170 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
171 #define OPTION_KILL_ATS (OPTION_EXCLUDE_SYMBOLS + 1)
172 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
173 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
174 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
175 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
176 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
177 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
178 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
179 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
180 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
181 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
182 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
183 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
184 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
185 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
186 #define OPTION_EXCLUDE_LIBS (OPTION_ENABLE_EXTRA_PE_DEBUG + 1)
187 #define OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC \
188 (OPTION_EXCLUDE_LIBS + 1)
189 #define OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC \
190 (OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC + 1)
191 #define OPTION_LARGE_ADDRESS_AWARE \
192 (OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC + 1)
194 static void
195 gld${EMULATION_NAME}_add_options
196 (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl,
197 struct option **longopts, int nrl ATTRIBUTE_UNUSED,
198 struct option **really_longopts ATTRIBUTE_UNUSED)
199 {
200 static const struct option xtra_long[] = {
201 /* PE options */
202 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
203 {"dll", no_argument, NULL, OPTION_DLL},
204 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
205 {"heap", required_argument, NULL, OPTION_HEAP},
206 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
207 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
208 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
209 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
210 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
211 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
212 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
213 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
214 {"stack", required_argument, NULL, OPTION_STACK},
215 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
216 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
217 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
218 #ifdef DLL_SUPPORT
219 /* getopt allows abbreviations, so we do this to stop it from treating -o
220 as an abbreviation for this option */
221 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
222 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
223 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
224 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
225 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
226 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
227 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
228 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
229 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
230 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
231 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
232 /* getopt() allows abbreviations, so we do this to stop it from
233 treating -c as an abbreviation for these --compat-implib. */
234 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
235 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
236 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
237 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
238 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
239 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
240 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
241 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
242 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
243 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
244 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
245 #endif
246 {"large-address-aware", no_argument, NULL, OPTION_LARGE_ADDRESS_AWARE},
247 {NULL, no_argument, NULL, 0}
248 };
250 *longopts = (struct option *)
251 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
252 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
253 }
255 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
256 parameters which may be input from the command line. */
258 typedef struct
259 {
260 void *ptr;
261 int size;
262 int value;
263 char *symbol;
264 int inited;
265 } definfo;
267 #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
269 static definfo init[] =
270 {
271 /* imagebase must be first */
272 #define IMAGEBASEOFF 0
273 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
274 #define DLLOFF 1
275 {&dll, sizeof(dll), 0, "__dll__", 0},
276 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
277 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
278 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
279 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
280 D(MajorImageVersion,"__major_image_version__", 1),
281 D(MinorImageVersion,"__minor_image_version__", 0),
282 #ifdef TARGET_IS_armpe
283 D(MajorSubsystemVersion,"__major_subsystem_version__", 2),
284 #else
285 D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
286 #endif
287 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
288 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
289 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
290 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
291 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
292 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
293 D(LoaderFlags,"__loader_flags__", 0x0),
294 { NULL, 0, 0, NULL, 0 }
295 };
298 static void
299 gld_${EMULATION_NAME}_list_options (FILE *file)
300 {
301 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
302 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
303 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
304 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
305 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
306 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
307 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
308 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
309 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
310 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
311 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
312 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
313 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
314 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
315 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
316 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
317 #ifdef DLL_SUPPORT
318 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
319 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
320 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
321 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
322 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
323 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
324 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
325 fprintf (file, _(" --out-implib <file> Generate import library\n"));
326 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
327 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
328 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
329 create __imp_<SYMBOL> as well.\n"));
330 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
331 unless user specifies one\n"));
332 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
333 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
334 an importlib, use <string><basename>.dll\n\
335 in preference to lib<basename>.dll \n"));
336 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\
337 __imp_sym for DATA references\n"));
338 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
339 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
340 adding pseudo-relocations resolved at\n\
341 runtime.\n"));
342 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
343 auto-imported DATA.\n"));
344 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
345 or linking to DLLs (esp. auto-import)\n"));
346 #endif
347 fprintf (file, _(" --large-address-aware Executable supports virtual addresses\n\
348 greater than 2 gigabytes\n"));
349 }
352 static void
353 set_pe_name (char *name, long val)
354 {
355 int i;
357 /* Find the name and set it. */
358 for (i = 0; init[i].ptr; i++)
359 {
360 if (strcmp (name, init[i].symbol) == 0)
361 {
362 init[i].value = val;
363 init[i].inited = 1;
364 return;
365 }
366 }
367 abort ();
368 }
371 static void
372 set_pe_subsystem (void)
373 {
374 const char *sver;
375 const char *entry;
376 const char *initial_symbol_char;
377 char *end;
378 int len;
379 int i;
380 int subsystem;
381 unsigned long temp_subsystem;
382 static const struct
383 {
384 const char *name;
385 const int value;
386 const char *entry;
387 }
388 v[] =
389 {
390 { "native", 1, "NtProcessStartup" },
391 { "windows", 2, "WinMainCRTStartup" },
392 { "console", 3, "mainCRTStartup" },
393 { "posix", 7, "__PosixProcessStartup"},
394 { "wince", 9, "_WinMainCRTStartup" },
395 { "xbox", 14, "mainCRTStartup" },
396 { NULL, 0, NULL }
397 };
398 /* Entry point name for arbitrary subsystem numbers. */
399 static const char default_entry[] = "mainCRTStartup";
401 /* Check for the presence of a version number. */
402 sver = strchr (optarg, ':');
403 if (sver == NULL)
404 len = strlen (optarg);
405 else
406 {
407 len = sver - optarg;
408 set_pe_name ("__major_subsystem_version__",
409 strtoul (sver + 1, &end, 0));
410 if (*end == '.')
411 set_pe_name ("__minor_subsystem_version__",
412 strtoul (end + 1, &end, 0));
413 if (*end != '\0')
414 einfo (_("%P: warning: bad version number in -subsystem option\n"));
415 }
417 /* Check for numeric subsystem. */
418 temp_subsystem = strtoul (optarg, & end, 0);
419 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
420 {
421 /* Search list for a numeric match to use its entry point. */
422 for (i = 0; v[i].name; i++)
423 if (v[i].value == (int) temp_subsystem)
424 break;
426 /* If no match, use the default. */
427 if (v[i].name != NULL)
428 entry = v[i].entry;
429 else
430 entry = default_entry;
432 /* Use this subsystem. */
433 subsystem = (int) temp_subsystem;
434 }
435 else
436 {
437 /* Search for subsystem by name. */
438 for (i = 0; v[i].name; i++)
439 if (strncmp (optarg, v[i].name, len) == 0
440 && v[i].name[len] == '\0')
441 break;
443 if (v[i].name == NULL)
444 {
445 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
446 return;
447 }
449 entry = v[i].entry;
450 subsystem = v[i].value;
451 }
453 set_pe_name ("__subsystem__", subsystem);
455 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
456 if (*initial_symbol_char != '\0')
457 {
458 char *alc_entry;
460 /* lang_default_entry expects its argument to be permanently
461 allocated, so we don't free this string. */
462 alc_entry = xmalloc (strlen (initial_symbol_char)
463 + strlen (entry)
464 + 1);
465 strcpy (alc_entry, initial_symbol_char);
466 strcat (alc_entry, entry);
467 entry = alc_entry;
468 }
470 lang_default_entry (entry);
472 return;
473 }
476 static void
477 set_pe_value (char *name)
478 {
479 char *end;
481 set_pe_name (name, strtoul (optarg, &end, 0));
483 if (end == optarg)
484 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
486 optarg = end;
487 }
490 static void
491 set_pe_stack_heap (char *resname, char *comname)
492 {
493 set_pe_value (resname);
495 if (*optarg == ',')
496 {
497 optarg++;
498 set_pe_value (comname);
499 }
500 else if (*optarg)
501 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
502 }
505 static bfd_boolean
506 gld${EMULATION_NAME}_handle_option (int optc)
507 {
508 switch (optc)
509 {
510 default:
511 return FALSE;
513 case OPTION_BASE_FILE:
514 link_info.base_file = fopen (optarg, FOPEN_WB);
515 if (link_info.base_file == NULL)
516 {
517 /* xgettext:c-format */
518 fprintf (stderr, _("%s: Can't open base file %s\n"),
519 program_name, optarg);
520 xexit (1);
521 }
522 break;
524 /* PE options. */
525 case OPTION_HEAP:
526 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
527 break;
528 case OPTION_STACK:
529 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
530 break;
531 case OPTION_SUBSYSTEM:
532 set_pe_subsystem ();
533 break;
534 case OPTION_MAJOR_OS_VERSION:
535 set_pe_value ("__major_os_version__");
536 break;
537 case OPTION_MINOR_OS_VERSION:
538 set_pe_value ("__minor_os_version__");
539 break;
540 case OPTION_MAJOR_SUBSYSTEM_VERSION:
541 set_pe_value ("__major_subsystem_version__");
542 break;
543 case OPTION_MINOR_SUBSYSTEM_VERSION:
544 set_pe_value ("__minor_subsystem_version__");
545 break;
546 case OPTION_MAJOR_IMAGE_VERSION:
547 set_pe_value ("__major_image_version__");
548 break;
549 case OPTION_MINOR_IMAGE_VERSION:
550 set_pe_value ("__minor_image_version__");
551 break;
552 case OPTION_FILE_ALIGNMENT:
553 set_pe_value ("__file_alignment__");
554 break;
555 case OPTION_SECTION_ALIGNMENT:
556 set_pe_value ("__section_alignment__");
557 break;
558 case OPTION_DLL:
559 set_pe_name ("__dll__", 1);
560 break;
561 case OPTION_IMAGE_BASE:
562 set_pe_value ("__image_base__");
563 break;
564 case OPTION_SUPPORT_OLD_CODE:
565 support_old_code = 1;
566 break;
567 case OPTION_THUMB_ENTRY:
568 thumb_entry_symbol = optarg;
569 break;
570 #ifdef DLL_SUPPORT
571 case OPTION_OUT_DEF:
572 pe_out_def_filename = xstrdup (optarg);
573 break;
574 case OPTION_EXPORT_ALL:
575 pe_dll_export_everything = 1;
576 break;
577 case OPTION_EXCLUDE_SYMBOLS:
578 pe_dll_add_excludes (optarg, 0);
579 break;
580 case OPTION_EXCLUDE_LIBS:
581 pe_dll_add_excludes (optarg, 1);
582 break;
583 case OPTION_KILL_ATS:
584 pe_dll_kill_ats = 1;
585 break;
586 case OPTION_STDCALL_ALIASES:
587 pe_dll_stdcall_aliases = 1;
588 break;
589 case OPTION_ENABLE_STDCALL_FIXUP:
590 pe_enable_stdcall_fixup = 1;
591 break;
592 case OPTION_DISABLE_STDCALL_FIXUP:
593 pe_enable_stdcall_fixup = 0;
594 break;
595 case OPTION_IMPLIB_FILENAME:
596 pe_implib_filename = xstrdup (optarg);
597 break;
598 case OPTION_WARN_DUPLICATE_EXPORTS:
599 pe_dll_warn_dup_exports = 1;
600 break;
601 case OPTION_IMP_COMPAT:
602 pe_dll_compat_implib = 1;
603 break;
604 case OPTION_ENABLE_AUTO_IMAGE_BASE:
605 pe_enable_auto_image_base = 1;
606 break;
607 case OPTION_DISABLE_AUTO_IMAGE_BASE:
608 pe_enable_auto_image_base = 0;
609 break;
610 case OPTION_DLL_SEARCH_PREFIX:
611 pe_dll_search_prefix = xstrdup (optarg);
612 break;
613 case OPTION_NO_DEFAULT_EXCLUDES:
614 pe_dll_do_default_excludes = 0;
615 break;
616 case OPTION_DLL_ENABLE_AUTO_IMPORT:
617 link_info.pei386_auto_import = 1;
618 break;
619 case OPTION_DLL_DISABLE_AUTO_IMPORT:
620 link_info.pei386_auto_import = 0;
621 break;
622 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
623 link_info.pei386_runtime_pseudo_reloc = 1;
624 break;
625 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
626 link_info.pei386_runtime_pseudo_reloc = 0;
627 break;
628 case OPTION_ENABLE_EXTRA_PE_DEBUG:
629 pe_dll_extra_pe_debug = 1;
630 break;
631 #endif
632 case OPTION_LARGE_ADDRESS_AWARE:
633 real_flags |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
634 break;
635 }
636 return TRUE;
637 }
638 \f
640 #ifdef DLL_SUPPORT
641 static unsigned long
642 strhash (const char *str)
643 {
644 const unsigned char *s;
645 unsigned long hash;
646 unsigned int c;
647 unsigned int len;
649 hash = 0;
650 len = 0;
651 s = (const unsigned char *) str;
652 while ((c = *s++) != '\0')
653 {
654 hash += c + (c << 17);
655 hash ^= hash >> 2;
656 ++len;
657 }
658 hash += len + (len << 17);
659 hash ^= hash >> 2;
661 return hash;
662 }
664 /* Use the output file to create a image base for relocatable DLLs. */
666 static unsigned long
667 compute_dll_image_base (const char *ofile)
668 {
669 unsigned long hash = strhash (ofile);
670 return 0x61300000 + ((hash << 16) & 0x0FFC0000);
671 }
672 #endif
674 /* Assign values to the special symbols before the linker script is
675 read. */
677 static void
678 gld_${EMULATION_NAME}_set_symbols (void)
679 {
680 /* Run through and invent symbols for all the
681 names and insert the defaults. */
682 int j;
683 lang_statement_list_type *save;
685 if (!init[IMAGEBASEOFF].inited)
686 {
687 if (link_info.relocatable)
688 init[IMAGEBASEOFF].value = 0;
689 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
690 #ifdef DLL_SUPPORT
691 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base) ?
692 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
693 #else
694 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
695 #endif
696 else
697 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
698 }
700 /* Don't do any symbol assignments if this is a relocatable link. */
701 if (link_info.relocatable)
702 return;
704 /* Glue the assignments into the abs section. */
705 save = stat_ptr;
707 stat_ptr = &(abs_output_section->children);
709 for (j = 0; init[j].ptr; j++)
710 {
711 long val = init[j].value;
712 lang_assignment_statement_type *rv;
713 rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
714 exp_intop (val)));
715 if (init[j].size == sizeof (short))
716 *(short *) init[j].ptr = val;
717 else if (init[j].size == sizeof (int))
718 *(int *) init[j].ptr = val;
719 else if (init[j].size == sizeof (long))
720 *(long *) init[j].ptr = val;
721 /* This might be a long long or other special type. */
722 else if (init[j].size == sizeof (bfd_vma))
723 *(bfd_vma *) init[j].ptr = val;
724 else abort ();
725 if (j == IMAGEBASEOFF)
726 image_base_statement = rv;
727 }
728 /* Restore the pointer. */
729 stat_ptr = save;
731 if (pe.FileAlignment >
732 pe.SectionAlignment)
733 {
734 einfo (_("%P: warning, file alignment > section alignment.\n"));
735 }
736 }
738 /* This is called after the linker script and the command line options
739 have been read. */
741 static void
742 gld_${EMULATION_NAME}_after_parse (void)
743 {
744 /* The Windows libraries are designed for the linker to treat the
745 entry point as an undefined symbol. Otherwise, the .obj that
746 defines mainCRTStartup is brought in because it is the first
747 encountered in libc.lib and it has other symbols in it which will
748 be pulled in by the link process. To avoid this, we act as
749 though the user specified -u with the entry point symbol.
751 This function is called after the linker script and command line
752 options have been read, so at this point we know the right entry
753 point. This function is called before the input files are
754 opened, so registering the symbol as undefined will make a
755 difference. */
757 if (! link_info.relocatable && entry_symbol.name != NULL)
758 ldlang_add_undef (entry_symbol.name);
759 }
761 /* pe-dll.c directly accesses pe_data_import_dll,
762 so it must be defined outside of #ifdef DLL_SUPPORT.
763 Note - this variable is deliberately not initialised.
764 This allows it to be treated as a common varaible, and only
765 exist in one incarnation in a multiple target enabled linker. */
766 char * pe_data_import_dll;
768 #ifdef DLL_SUPPORT
769 static struct bfd_link_hash_entry *pe_undef_found_sym;
771 static bfd_boolean
772 pe_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
773 {
774 int sl;
775 char *string = inf;
777 sl = strlen (string);
778 if (h->type == bfd_link_hash_defined
779 && strncmp (h->root.string, string, sl) == 0
780 && h->root.string[sl] == '@')
781 {
782 pe_undef_found_sym = h;
783 return FALSE;
784 }
785 return TRUE;
786 }
788 static void
789 pe_fixup_stdcalls (void)
790 {
791 static int gave_warning_message = 0;
792 struct bfd_link_hash_entry *undef, *sym;
794 if (pe_dll_extra_pe_debug)
795 printf ("%s\n", __FUNCTION__);
797 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
798 if (undef->type == bfd_link_hash_undefined)
799 {
800 char* at = strchr (undef->root.string, '@');
801 int lead_at = (*undef->root.string == '@');
802 /* For now, don't try to fixup fastcall symbols. */
804 if (at && !lead_at)
805 {
806 /* The symbol is a stdcall symbol, so let's look for a
807 cdecl symbol with the same name and resolve to that. */
808 char *cname = xstrdup (undef->root.string /* + lead_at */);
809 at = strchr (cname, '@');
810 *at = 0;
811 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
813 if (sym && sym->type == bfd_link_hash_defined)
814 {
815 undef->type = bfd_link_hash_defined;
816 undef->u.def.value = sym->u.def.value;
817 undef->u.def.section = sym->u.def.section;
819 if (pe_enable_stdcall_fixup == -1)
820 {
821 einfo (_("Warning: resolving %s by linking to %s\n"),
822 undef->root.string, cname);
823 if (! gave_warning_message)
824 {
825 gave_warning_message = 1;
826 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
827 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
828 }
829 }
830 }
831 }
832 else
833 {
834 /* The symbol is a cdecl symbol, so we look for stdcall
835 symbols - which means scanning the whole symbol table. */
836 pe_undef_found_sym = 0;
837 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
838 (char *) undef->root.string);
839 sym = pe_undef_found_sym;
840 if (sym)
841 {
842 undef->type = bfd_link_hash_defined;
843 undef->u.def.value = sym->u.def.value;
844 undef->u.def.section = sym->u.def.section;
846 if (pe_enable_stdcall_fixup == -1)
847 {
848 einfo (_("Warning: resolving %s by linking to %s\n"),
849 undef->root.string, sym->root.string);
850 if (! gave_warning_message)
851 {
852 gave_warning_message = 1;
853 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
854 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
855 }
856 }
857 }
858 }
859 }
860 }
862 static int
863 make_import_fixup (arelent *rel, asection *s)
864 {
865 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
866 char addend[4];
868 if (pe_dll_extra_pe_debug)
869 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
870 (long) rel->address, (long) rel->addend);
872 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
873 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
874 s->owner, s, rel->address);
876 pe_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
878 return 1;
879 }
881 static void
882 pe_find_data_imports (void)
883 {
884 struct bfd_link_hash_entry *undef, *sym;
886 if (link_info.pei386_auto_import == 0)
887 return;
889 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
890 {
891 if (undef->type == bfd_link_hash_undefined)
892 {
893 /* C++ symbols are *long*. */
894 char buf[4096];
896 if (pe_dll_extra_pe_debug)
897 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
899 sprintf (buf, "__imp_%s", undef->root.string);
901 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
903 if (sym && sym->type == bfd_link_hash_defined)
904 {
905 bfd *b = sym->u.def.section->owner;
906 asymbol **symbols;
907 int nsyms, symsize, i;
909 if (link_info.pei386_auto_import == -1)
910 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
911 undef->root.string, buf);
913 symsize = bfd_get_symtab_upper_bound (b);
914 symbols = (asymbol **) xmalloc (symsize);
915 nsyms = bfd_canonicalize_symtab (b, symbols);
917 for (i = 0; i < nsyms; i++)
918 {
919 if (memcmp (symbols[i]->name, "__head_",
920 sizeof ("__head_") - 1))
921 continue;
923 if (pe_dll_extra_pe_debug)
924 printf ("->%s\n", symbols[i]->name);
926 pe_data_import_dll = (char*) (symbols[i]->name +
927 sizeof ("__head_") - 1);
928 break;
929 }
931 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
932 make_import_fixup);
934 /* Let's differentiate it somehow from defined. */
935 undef->type = bfd_link_hash_defweak;
936 /* We replace original name with __imp_ prefixed, this
937 1) may trash memory 2) leads to duplicate symbol generation.
938 Still, IMHO it's better than having name poluted. */
939 undef->root.string = sym->root.string;
940 undef->u.def.value = sym->u.def.value;
941 undef->u.def.section = sym->u.def.section;
942 }
943 }
944 }
945 }
947 static bfd_boolean
948 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
949 {
950 if (pe_dll_extra_pe_debug)
951 printf ("+%s\n", h->string);
953 return TRUE;
954 }
955 #endif /* DLL_SUPPORT */
958 static void
959 gld_${EMULATION_NAME}_after_open (void)
960 {
961 #ifdef DLL_SUPPORT
962 if (pe_dll_extra_pe_debug)
963 {
964 bfd *a;
965 struct bfd_link_hash_entry *sym;
967 printf ("%s()\n", __FUNCTION__);
969 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
970 printf ("-%s\n", sym->root.string);
971 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
973 for (a = link_info.input_bfds; a; a = a->link_next)
974 printf ("*%s\n",a->filename);
975 }
976 #endif
978 /* Pass the wacky PE command line options into the output bfd.
979 FIXME: This should be done via a function, rather than by
980 including an internal BFD header. */
982 if (coff_data (output_bfd) == NULL || coff_data (output_bfd)->pe == 0)
983 einfo (_("%F%P: PE operations on non PE file.\n"));
985 pe_data (output_bfd)->pe_opthdr = pe;
986 pe_data (output_bfd)->dll = init[DLLOFF].value;
987 pe_data (output_bfd)->real_flags |= real_flags;
989 #ifdef DLL_SUPPORT
990 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
991 pe_fixup_stdcalls ();
993 pe_process_import_defs (output_bfd, & link_info);
995 pe_find_data_imports ();
997 #if ! (defined (TARGET_IS_i386pe) || defined (TARGET_IS_armpe))
998 if (link_info.shared)
999 #else
1000 if (!link_info.relocatable)
1001 #endif
1002 pe_dll_build_sections (output_bfd, &link_info);
1004 #ifndef TARGET_IS_i386pe
1005 #ifndef TARGET_IS_armpe
1006 else
1007 pe_exe_build_sections (output_bfd, &link_info);
1008 #endif
1009 #endif
1010 #endif
1012 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1013 if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
1014 {
1015 /* The arm backend needs special fields in the output hash structure.
1016 These will only be created if the output format is an arm format,
1017 hence we do not support linking and changing output formats at the
1018 same time. Use a link followed by objcopy to change output formats. */
1019 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1020 return;
1021 }
1022 {
1023 /* Find a BFD that can hold the interworking stubs. */
1024 LANG_FOR_EACH_INPUT_STATEMENT (is)
1025 {
1026 if (bfd_arm_pe_get_bfd_for_interworking (is->the_bfd, & link_info))
1027 break;
1028 }
1029 }
1030 #endif
1032 {
1033 /* This next chunk of code tries to detect the case where you have
1034 two import libraries for the same DLL (specifically,
1035 symbolically linking libm.a and libc.a in cygwin to
1036 libcygwin.a). In those cases, it's possible for function
1037 thunks from the second implib to be used but without the
1038 head/tail objects, causing an improper import table. We detect
1039 those cases and rename the "other" import libraries to match
1040 the one the head/tail come from, so that the linker will sort
1041 things nicely and produce a valid import table. */
1043 LANG_FOR_EACH_INPUT_STATEMENT (is)
1044 {
1045 if (is->the_bfd->my_archive)
1046 {
1047 int idata2 = 0, reloc_count=0, is_imp = 0;
1048 asection *sec;
1050 /* See if this is an import library thunk. */
1051 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1052 {
1053 if (strcmp (sec->name, ".idata\$2") == 0)
1054 idata2 = 1;
1055 if (strncmp (sec->name, ".idata\$", 7) == 0)
1056 is_imp = 1;
1057 reloc_count += sec->reloc_count;
1058 }
1060 if (is_imp && !idata2 && reloc_count)
1061 {
1062 /* It is, look for the reference to head and see if it's
1063 from our own library. */
1064 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1065 {
1066 int i;
1067 long symsize;
1068 long relsize;
1069 asymbol **symbols;
1070 arelent **relocs;
1071 int nrelocs;
1073 symsize = bfd_get_symtab_upper_bound (is->the_bfd);
1074 if (symsize < 1)
1075 break;
1076 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1077 if (relsize < 1)
1078 break;
1080 symbols = (asymbol **) xmalloc (symsize);
1081 symsize = bfd_canonicalize_symtab (is->the_bfd, symbols);
1082 if (symsize < 0)
1083 {
1084 einfo ("%X%P: unable to process symbols: %E");
1085 return;
1086 }
1088 relocs = (arelent **) xmalloc ((size_t) relsize);
1089 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1090 relocs, symbols);
1091 if (nrelocs < 0)
1092 {
1093 free (relocs);
1094 einfo ("%X%P: unable to process relocs: %E");
1095 return;
1096 }
1098 for (i = 0; i < nrelocs; i++)
1099 {
1100 struct bfd_symbol *s;
1101 struct bfd_link_hash_entry * blhe;
1102 char *other_bfd_filename;
1103 char *n;
1105 s = (relocs[i]->sym_ptr_ptr)[0];
1107 if (s->flags & BSF_LOCAL)
1108 continue;
1110 /* Thunk section with reloc to another bfd. */
1111 blhe = bfd_link_hash_lookup (link_info.hash,
1112 s->name,
1113 FALSE, FALSE, TRUE);
1115 if (blhe == NULL
1116 || blhe->type != bfd_link_hash_defined)
1117 continue;
1119 other_bfd_filename
1120 = blhe->u.def.section->owner->my_archive
1121 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1122 : bfd_get_filename (blhe->u.def.section->owner);
1124 if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
1125 other_bfd_filename) == 0)
1126 continue;
1128 /* Rename this implib to match the other one. */
1129 n = xmalloc (strlen (other_bfd_filename) + 1);
1130 strcpy (n, other_bfd_filename);
1131 is->the_bfd->my_archive->filename = n;
1132 }
1134 free (relocs);
1135 /* Note - we do not free the symbols,
1136 they are now cached in the BFD. */
1137 }
1138 }
1139 }
1140 }
1141 }
1143 {
1144 int is_ms_arch = 0;
1145 bfd *cur_arch = 0;
1146 lang_input_statement_type *is2;
1147 lang_input_statement_type *is3;
1149 /* Careful - this is a shell script. Watch those dollar signs! */
1150 /* Microsoft import libraries have every member named the same,
1151 and not in the right order for us to link them correctly. We
1152 must detect these and rename the members so that they'll link
1153 correctly. There are three types of objects: the head, the
1154 thunks, and the sentinel(s). The head is easy; it's the one
1155 with idata2. We assume that the sentinels won't have relocs,
1156 and the thunks will. It's easier than checking the symbol
1157 table for external references. */
1158 LANG_FOR_EACH_INPUT_STATEMENT (is)
1159 {
1160 if (is->the_bfd->my_archive)
1161 {
1162 char *pnt;
1163 bfd *arch = is->the_bfd->my_archive;
1165 if (cur_arch != arch)
1166 {
1167 cur_arch = arch;
1168 is_ms_arch = 1;
1170 for (is3 = is;
1171 is3 && is3->the_bfd->my_archive == arch;
1172 is3 = (lang_input_statement_type *) is3->next)
1173 {
1174 /* A MS dynamic import library can also contain static
1175 members, so look for the first element with a .dll
1176 extension, and use that for the remainder of the
1177 comparisons. */
1178 pnt = strrchr (is3->the_bfd->filename, '.');
1179 if (pnt != NULL && strcmp (pnt, ".dll") == 0)
1180 break;
1181 }
1183 if (is3 == NULL)
1184 is_ms_arch = 0;
1185 else
1186 {
1187 /* OK, found one. Now look to see if the remaining
1188 (dynamic import) members use the same name. */
1189 for (is2 = is;
1190 is2 && is2->the_bfd->my_archive == arch;
1191 is2 = (lang_input_statement_type *) is2->next)
1192 {
1193 /* Skip static members, ie anything with a .obj
1194 extension. */
1195 pnt = strrchr (is2->the_bfd->filename, '.');
1196 if (pnt != NULL && strcmp (pnt, ".obj") == 0)
1197 continue;
1199 if (strcmp (is3->the_bfd->filename,
1200 is2->the_bfd->filename))
1201 {
1202 is_ms_arch = 0;
1203 break;
1204 }
1205 }
1206 }
1207 }
1209 /* This fragment might have come from an .obj file in a Microsoft
1210 import, and not an actual import record. If this is the case,
1211 then leave the filename alone. */
1212 pnt = strrchr (is->the_bfd->filename, '.');
1214 if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
1215 {
1216 int idata2 = 0, reloc_count=0;
1217 asection *sec;
1218 char *new_name, seq;
1220 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1221 {
1222 if (strcmp (sec->name, ".idata\$2") == 0)
1223 idata2 = 1;
1224 reloc_count += sec->reloc_count;
1225 }
1227 if (idata2) /* .idata2 is the TOC */
1228 seq = 'a';
1229 else if (reloc_count > 0) /* thunks */
1230 seq = 'b';
1231 else /* sentinel */
1232 seq = 'c';
1234 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1235 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1236 is->the_bfd->filename = new_name;
1238 new_name = xmalloc (strlen (is->filename) + 3);
1239 sprintf (new_name, "%s.%c", is->filename, seq);
1240 is->filename = new_name;
1241 }
1242 }
1243 }
1244 }
1245 }
1246 \f
1247 static void
1248 gld_${EMULATION_NAME}_before_allocation (void)
1249 {
1250 #ifdef TARGET_IS_ppcpe
1251 /* Here we rummage through the found bfds to collect toc information. */
1252 {
1253 LANG_FOR_EACH_INPUT_STATEMENT (is)
1254 {
1255 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1256 {
1257 /* xgettext:c-format */
1258 einfo (_("Errors encountered processing file %s\n"), is->filename);
1259 }
1260 }
1261 }
1263 /* We have seen it all. Allocate it, and carry on. */
1264 ppc_allocate_toc_section (&link_info);
1265 #endif /* TARGET_IS_ppcpe */
1267 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1268 /* FIXME: we should be able to set the size of the interworking stub
1269 section.
1271 Here we rummage through the found bfds to collect glue
1272 information. FIXME: should this be based on a command line
1273 option? krk@cygnus.com. */
1274 {
1275 LANG_FOR_EACH_INPUT_STATEMENT (is)
1276 {
1277 if (! bfd_arm_pe_process_before_allocation
1278 (is->the_bfd, & link_info, support_old_code))
1279 {
1280 /* xgettext:c-format */
1281 einfo (_("Errors encountered processing file %s for interworking"),
1282 is->filename);
1283 }
1284 }
1285 }
1287 /* We have seen it all. Allocate it, and carry on. */
1288 bfd_arm_pe_allocate_interworking_sections (& link_info);
1289 #endif /* TARGET_IS_armpe */
1291 before_allocation_default ();
1292 }
1293 \f
1294 #ifdef DLL_SUPPORT
1295 /* This is called when an input file isn't recognized as a BFD. We
1296 check here for .DEF files and pull them in automatically. */
1298 static int
1299 saw_option (char *option)
1300 {
1301 int i;
1303 for (i = 0; init[i].ptr; i++)
1304 if (strcmp (init[i].symbol, option) == 0)
1305 return init[i].inited;
1306 return 0;
1307 }
1308 #endif /* DLL_SUPPORT */
1310 static bfd_boolean
1311 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1312 {
1313 #ifdef DLL_SUPPORT
1314 const char *ext = entry->filename + strlen (entry->filename) - 4;
1316 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1317 {
1318 pe_def_file = def_file_parse (entry->filename, pe_def_file);
1320 if (pe_def_file)
1321 {
1322 int i, buflen=0, len;
1323 char *buf;
1325 for (i = 0; i < pe_def_file->num_exports; i++)
1326 {
1327 len = strlen (pe_def_file->exports[i].internal_name);
1328 if (buflen < len + 2)
1329 buflen = len + 2;
1330 }
1332 buf = (char *) xmalloc (buflen);
1334 for (i = 0; i < pe_def_file->num_exports; i++)
1335 {
1336 struct bfd_link_hash_entry *h;
1338 sprintf (buf, "_%s", pe_def_file->exports[i].internal_name);
1340 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1341 if (h == (struct bfd_link_hash_entry *) NULL)
1342 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1343 if (h->type == bfd_link_hash_new)
1344 {
1345 h->type = bfd_link_hash_undefined;
1346 h->u.undef.abfd = NULL;
1347 bfd_link_add_undef (link_info.hash, h);
1348 }
1349 }
1350 free (buf);
1352 /* def_file_print (stdout, pe_def_file); */
1353 if (pe_def_file->is_dll == 1)
1354 link_info.shared = 1;
1356 if (pe_def_file->base_address != (bfd_vma)(-1))
1357 {
1358 pe.ImageBase =
1359 pe_data (output_bfd)->pe_opthdr.ImageBase =
1360 init[IMAGEBASEOFF].value = pe_def_file->base_address;
1361 init[IMAGEBASEOFF].inited = 1;
1362 if (image_base_statement)
1363 image_base_statement->exp =
1364 exp_assop ('=', "__image_base__", exp_intop (pe.ImageBase));
1365 }
1367 if (pe_def_file->stack_reserve != -1
1368 && ! saw_option ("__size_of_stack_reserve__"))
1369 {
1370 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1371 if (pe_def_file->stack_commit != -1)
1372 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1373 }
1374 if (pe_def_file->heap_reserve != -1
1375 && ! saw_option ("__size_of_heap_reserve__"))
1376 {
1377 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1378 if (pe_def_file->heap_commit != -1)
1379 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1380 }
1381 return TRUE;
1382 }
1383 }
1384 #endif
1385 return FALSE;
1386 }
1388 static bfd_boolean
1389 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1390 {
1391 #ifdef DLL_SUPPORT
1392 #ifdef TARGET_IS_i386pe
1393 pe_dll_id_target ("pei-i386");
1394 #endif
1395 #ifdef TARGET_IS_shpe
1396 pe_dll_id_target ("pei-shl");
1397 #endif
1398 #ifdef TARGET_IS_mipspe
1399 pe_dll_id_target ("pei-mips");
1400 #endif
1401 #ifdef TARGET_IS_armpe
1402 pe_dll_id_target ("pei-arm-little");
1403 #endif
1404 if (bfd_get_format (entry->the_bfd) == bfd_object)
1405 {
1406 char fbuf[LD_PATHMAX + 1];
1407 const char *ext;
1409 if (REALPATH (entry->filename, fbuf) == NULL)
1410 strncpy (fbuf, entry->filename, sizeof (fbuf));
1412 ext = fbuf + strlen (fbuf) - 4;
1414 if (strcmp (ext, ".dll") == 0 || strcmp (ext, ".DLL") == 0)
1415 return pe_implied_import_dll (fbuf);
1416 }
1417 #endif
1418 return FALSE;
1419 }
1421 static void
1422 gld_${EMULATION_NAME}_finish (void)
1423 {
1424 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1425 struct bfd_link_hash_entry * h;
1427 if (thumb_entry_symbol != NULL)
1428 {
1429 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol,
1430 FALSE, FALSE, TRUE);
1432 if (h != (struct bfd_link_hash_entry *) NULL
1433 && (h->type == bfd_link_hash_defined
1434 || h->type == bfd_link_hash_defweak)
1435 && h->u.def.section->output_section != NULL)
1436 {
1437 static char buffer[32];
1438 bfd_vma val;
1440 /* Special procesing is required for a Thumb entry symbol. The
1441 bottom bit of its address must be set. */
1442 val = (h->u.def.value
1443 + bfd_get_section_vma (output_bfd,
1444 h->u.def.section->output_section)
1445 + h->u.def.section->output_offset);
1447 val |= 1;
1449 /* Now convert this value into a string and store it in entry_symbol
1450 where the lang_finish() function will pick it up. */
1451 buffer[0] = '0';
1452 buffer[1] = 'x';
1454 sprintf_vma (buffer + 2, val);
1456 if (entry_symbol.name != NULL && entry_from_cmdline)
1457 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1458 thumb_entry_symbol, entry_symbol.name);
1459 entry_symbol.name = buffer;
1460 }
1461 else
1462 einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
1463 }
1464 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) */
1466 finish_default ();
1468 #ifdef DLL_SUPPORT
1469 if (link_info.shared
1470 #if !defined(TARGET_IS_shpe) && !defined(TARGET_IS_mipspe)
1471 || (!link_info.relocatable && pe_def_file->num_exports != 0)
1472 #endif
1473 )
1474 {
1475 pe_dll_fill_sections (output_bfd, &link_info);
1476 if (pe_implib_filename)
1477 pe_dll_generate_implib (pe_def_file, pe_implib_filename);
1478 }
1479 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1480 /* ARM doesn't need relocs. */
1481 else
1482 {
1483 pe_exe_fill_sections (output_bfd, &link_info);
1484 }
1485 #endif
1487 if (pe_out_def_filename)
1488 pe_dll_generate_def_file (pe_out_def_filename);
1489 #endif /* DLL_SUPPORT */
1491 /* I don't know where .idata gets set as code, but it shouldn't be. */
1492 {
1493 asection *asec = bfd_get_section_by_name (output_bfd, ".idata");
1495 if (asec)
1496 {
1497 asec->flags &= ~SEC_CODE;
1498 asec->flags |= SEC_DATA;
1499 }
1500 }
1501 }
1503 \f
1504 /* Place an orphan section.
1506 We use this to put sections in a reasonable place in the file, and
1507 to ensure that they are aligned as required.
1509 We handle grouped sections here as well. A section named .foo$nn
1510 goes into the output section .foo. All grouped sections are sorted
1511 by name.
1513 Grouped sections for the default sections are handled by the
1514 default linker script using wildcards, and are sorted by
1515 sort_sections. */
1517 static bfd_boolean
1518 gld_${EMULATION_NAME}_place_orphan (lang_input_statement_type *file, asection *s)
1519 {
1520 const char *secname;
1521 const char *orig_secname;
1522 char *dollar = NULL;
1523 lang_output_section_statement_type *os;
1524 lang_statement_list_type add_child;
1526 secname = bfd_get_section_name (s->owner, s);
1528 /* Look through the script to see where to place this section. */
1529 orig_secname = secname;
1530 if (!link_info.relocatable
1531 && (dollar = strchr (secname, '$')) != NULL)
1532 {
1533 size_t len = dollar - orig_secname;
1534 char *newname = xmalloc (len + 1);
1535 memcpy (newname, orig_secname, len);
1536 newname[len] = '\0';
1537 secname = newname;
1538 }
1540 os = lang_output_section_find (secname);
1542 lang_list_init (&add_child);
1544 if (os != NULL
1545 && (os->bfd_section == NULL
1546 || os->bfd_section->flags == 0
1547 || ((s->flags ^ os->bfd_section->flags)
1548 & (SEC_LOAD | SEC_ALLOC)) == 0))
1549 {
1550 /* We already have an output section statement with this
1551 name, and its bfd section, if any, has compatible flags.
1552 If the section already exists but does not have any flags set,
1553 then it has been created by the linker, probably as a result of
1554 a --section-start command line switch. */
1555 lang_add_section (&add_child, s, os, file);
1556 }
1557 else
1558 {
1559 static struct orphan_save hold[] =
1560 {
1561 { ".text",
1562 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1563 0, 0, 0, 0 },
1564 { ".rdata",
1565 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1566 0, 0, 0, 0 },
1567 { ".data",
1568 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1569 0, 0, 0, 0 },
1570 { ".bss",
1571 SEC_ALLOC,
1572 0, 0, 0, 0 }
1573 };
1574 enum orphan_save_index
1575 {
1576 orphan_text = 0,
1577 orphan_rodata,
1578 orphan_data,
1579 orphan_bss
1580 };
1581 static int orphan_init_done = 0;
1582 struct orphan_save *place;
1583 lang_output_section_statement_type *after;
1584 etree_type *address;
1586 if (!orphan_init_done)
1587 {
1588 struct orphan_save *ho;
1589 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1590 if (ho->name != NULL)
1591 {
1592 ho->os = lang_output_section_find (ho->name);
1593 if (ho->os != NULL && ho->os->flags == 0)
1594 ho->os->flags = ho->flags;
1595 }
1596 orphan_init_done = 1;
1597 }
1599 /* Try to put the new output section in a reasonable place based
1600 on the section name and section flags. */
1602 place = NULL;
1603 if ((s->flags & SEC_ALLOC) == 0)
1604 ;
1605 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1606 place = &hold[orphan_bss];
1607 else if ((s->flags & SEC_READONLY) == 0)
1608 place = &hold[orphan_data];
1609 else if ((s->flags & SEC_CODE) == 0)
1610 place = &hold[orphan_rodata];
1611 else
1612 place = &hold[orphan_text];
1614 after = NULL;
1615 if (place != NULL)
1616 {
1617 if (place->os == NULL)
1618 place->os = lang_output_section_find (place->name);
1619 after = place->os;
1620 if (after == NULL)
1621 after = lang_output_section_find_by_flags (s, &place->os);
1622 if (after == NULL)
1623 /* *ABS* is always the first output section statement. */
1624 after = (&lang_output_section_statement.head
1625 ->output_section_statement);
1626 }
1628 /* Choose a unique name for the section. This will be needed if the
1629 same section name appears in the input file with different
1630 loadable or allocatable characteristics. */
1631 if (bfd_get_section_by_name (output_bfd, secname) != NULL)
1632 {
1633 static int count = 1;
1634 secname = bfd_get_unique_section_name (output_bfd, secname, &count);
1635 if (secname == NULL)
1636 einfo ("%F%P: place_orphan failed: %E\n");
1637 }
1639 /* All sections in an executable must be aligned to a page boundary. */
1640 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
1641 os = lang_insert_orphan (file, s, secname, after, place, address,
1642 &add_child);
1643 }
1645 {
1646 lang_statement_union_type **pl = &os->children.head;
1648 if (dollar != NULL)
1649 {
1650 bfd_boolean found_dollar;
1652 /* The section name has a '$'. Sort it with the other '$'
1653 sections. */
1654 found_dollar = FALSE;
1655 for ( ; *pl != NULL; pl = &(*pl)->header.next)
1656 {
1657 lang_input_section_type *ls;
1658 const char *lname;
1660 if ((*pl)->header.type != lang_input_section_enum)
1661 continue;
1663 ls = &(*pl)->input_section;
1665 lname = bfd_get_section_name (ls->ifile->the_bfd, ls->section);
1666 if (strchr (lname, '$') == NULL)
1667 {
1668 if (found_dollar)
1669 break;
1670 }
1671 else
1672 {
1673 found_dollar = TRUE;
1674 if (strcmp (orig_secname, lname) < 0)
1675 break;
1676 }
1677 }
1678 }
1680 if (add_child.head != NULL)
1681 {
1682 add_child.head->header.next = *pl;
1683 *pl = add_child.head;
1684 }
1685 }
1687 return TRUE;
1688 }
1690 static bfd_boolean
1691 gld_${EMULATION_NAME}_open_dynamic_archive
1692 (const char *arch ATTRIBUTE_UNUSED, search_dirs_type *search,
1693 lang_input_statement_type *entry)
1694 {
1695 const char * filename;
1696 char * string;
1698 if (! entry->is_archive)
1699 return FALSE;
1701 filename = entry->filename;
1703 string = (char *) xmalloc (strlen (search->name)
1704 + strlen (filename)
1705 + sizeof "/lib.a.dll"
1706 #ifdef DLL_SUPPORT
1707 + (pe_dll_search_prefix ? strlen (pe_dll_search_prefix) : 0)
1708 #endif
1709 + 1);
1711 /* Try "libfoo.dll.a" first (preferred explicit import library for dll's. */
1712 sprintf (string, "%s/lib%s.dll.a", search->name, filename);
1714 if (! ldfile_try_open_bfd (string, entry))
1715 {
1716 /* Try "foo.dll.a" next (alternate explicit import library for dll's. */
1717 sprintf (string, "%s/%s.dll.a", search->name, filename);
1718 if (! ldfile_try_open_bfd (string, entry))
1719 {
1720 /* Try libfoo.a next. Normally, this would be interpreted as a static
1721 library, but it *could* be an import library. For backwards compatibility,
1722 libfoo.a needs to ==precede== libfoo.dll and foo.dll in the search,
1723 or sometimes errors occur when building legacy packages.
1725 Putting libfoo.a here means that in a failure case (i.e. the library
1726 -lfoo is not found) we will search for libfoo.a twice before
1727 giving up -- once here, and once when searching for a "static" lib.
1728 for a "static" lib. */
1729 /* Try "libfoo.a" (import lib, or static lib, but must
1730 take precedence over dll's). */
1731 sprintf (string, "%s/lib%s.a", search->name, filename);
1732 if (! ldfile_try_open_bfd (string, entry))
1733 {
1734 #ifdef DLL_SUPPORT
1735 if (pe_dll_search_prefix)
1736 {
1737 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
1738 sprintf (string, "%s/%s%s.dll", search->name, pe_dll_search_prefix, filename);
1739 if (! ldfile_try_open_bfd (string, entry))
1740 {
1741 /* Try "libfoo.dll" (default preferred dll name). */
1742 sprintf (string, "%s/lib%s.dll", search->name, filename);
1743 if (! ldfile_try_open_bfd (string, entry))
1744 {
1745 /* Finally, try "foo.dll" (alternate dll name). */
1746 sprintf (string, "%s/%s.dll", search->name, filename);
1747 if (! ldfile_try_open_bfd (string, entry))
1748 {
1749 free (string);
1750 return FALSE;
1751 }
1752 }
1753 }
1754 }
1755 else /* pe_dll_search_prefix not specified. */
1756 #endif
1757 {
1758 /* Try "libfoo.dll" (preferred dll name). */
1759 sprintf (string, "%s/lib%s.dll", search->name, filename);
1760 if (! ldfile_try_open_bfd (string, entry))
1761 {
1762 /* Finally, try "foo.dll" (alternate dll name). */
1763 sprintf (string, "%s/%s.dll", search->name, filename);
1764 if (! ldfile_try_open_bfd (string, entry))
1765 {
1766 free (string);
1767 return FALSE;
1768 }
1769 }
1770 }
1771 }
1772 }
1773 }
1775 entry->filename = string;
1777 return TRUE;
1778 }
1780 static int
1781 gld_${EMULATION_NAME}_find_potential_libraries
1782 (char *name, lang_input_statement_type *entry)
1783 {
1784 return ldfile_open_file_search (name, entry, "", ".lib");
1785 }
1786 \f
1787 static char *
1788 gld_${EMULATION_NAME}_get_script (int *isfile)
1789 EOF
1790 # Scripts compiled in.
1791 # sed commands to quote an ld script as a C string.
1792 sc="-f stringify.sed"
1794 cat >>e${EMULATION_NAME}.c <<EOF
1795 {
1796 *isfile = 0;
1798 if (link_info.relocatable && config.build_constructors)
1799 return
1800 EOF
1801 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1802 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1803 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1804 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1805 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1806 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1807 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1808 echo ' ; else return' >> e${EMULATION_NAME}.c
1809 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1810 echo '; }' >> e${EMULATION_NAME}.c
1812 cat >>e${EMULATION_NAME}.c <<EOF
1815 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1816 {
1817 gld_${EMULATION_NAME}_before_parse,
1818 syslib_default,
1819 hll_default,
1820 gld_${EMULATION_NAME}_after_parse,
1821 gld_${EMULATION_NAME}_after_open,
1822 after_allocation_default,
1823 set_output_arch_default,
1824 ldemul_default_target,
1825 gld_${EMULATION_NAME}_before_allocation,
1826 gld_${EMULATION_NAME}_get_script,
1827 "${EMULATION_NAME}",
1828 "${OUTPUT_FORMAT}",
1829 gld_${EMULATION_NAME}_finish,
1830 NULL, /* Create output section statements. */
1831 gld_${EMULATION_NAME}_open_dynamic_archive,
1832 gld_${EMULATION_NAME}_place_orphan,
1833 gld_${EMULATION_NAME}_set_symbols,
1834 NULL, /* parse_args */
1835 gld${EMULATION_NAME}_add_options,
1836 gld${EMULATION_NAME}_handle_option,
1837 gld_${EMULATION_NAME}_unrecognized_file,
1838 gld_${EMULATION_NAME}_list_options,
1839 gld_${EMULATION_NAME}_recognized_file,
1840 gld_${EMULATION_NAME}_find_potential_libraries,
1841 NULL /* new_vers_pattern. */
1842 };
1843 EOF