| blob | a78435b957b461a413074b74e4a8d97f2ee06fe8 |
1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 test -z "${ENTRY}" && ENTRY="_mainCRTStartup"
4 if [ -z "$MACHINE" ]; then
5 OUTPUT_ARCH=${ARCH}
6 else
7 OUTPUT_ARCH=${ARCH}:${MACHINE}
8 fi
9 rm -f e${EMULATION_NAME}.c
10 (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
11 fragment <<EOF
12 /* Copyright 2006, 2007 Free Software Foundation, Inc.
13 Written by Kai Tietz, OneVision Software GmbH&CoKg.
15 This file is part of the GNU Binutils.
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
19 the Free Software Foundation; either version 3 of the License, or
20 (at your option) any later version.
22 This program is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 GNU General Public License for more details.
27 You should have received a copy of the GNU General Public License
28 along with this program; if not, write to the Free Software
29 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
30 MA 02110-1301, USA. */
33 /* For WINDOWS_XP64 and higher */
34 /* Based on pe.em, but modified for 64 bit support. */
36 #define TARGET_IS_${EMULATION_NAME}
38 #define COFF_IMAGE_WITH_PE
39 #define COFF_WITH_PE
40 #define COFF_WITH_pex64
42 #include "sysdep.h"
43 #include "bfd.h"
44 #include "bfdlink.h"
45 #include "getopt.h"
46 #include "libiberty.h"
47 #include "ld.h"
48 #include "ldmain.h"
49 #include "ldexp.h"
50 #include "ldlang.h"
51 #include "ldfile.h"
52 #include "ldemul.h"
53 #include <ldgram.h>
54 #include "ldlex.h"
55 #include "ldmisc.h"
56 #include "ldctor.h"
57 #include "coff/internal.h"
59 /* FIXME: See bfd/peXXigen.c for why we include an architecture specific
60 header in generic PE code. */
61 #include "coff/x86_64.h"
62 #include "coff/pe.h"
64 /* FIXME: This is a BFD internal header file, and we should not be
65 using it here. */
66 #include "../bfd/libcoff.h"
68 #undef AOUTSZ
69 #define AOUTSZ PEPAOUTSZ
70 #define PEAOUTHDR PEPAOUTHDR
72 #include "deffile.h"
73 #include "pep-dll.h"
74 #include "safe-ctype.h"
76 /* Permit the emulation parameters to override the default section
77 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
78 it seem that include/coff/internal.h should not define
79 PE_DEF_SECTION_ALIGNMENT. */
80 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
81 #undef PE_DEF_SECTION_ALIGNMENT
82 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
83 #endif
85 #ifdef TARGET_IS_i386pep
86 #define DLL_SUPPORT
87 #endif
89 #if defined(TARGET_IS_i386pep) || ! defined(DLL_SUPPORT)
90 #define PE_DEF_SUBSYSTEM 3
91 #else
92 #undef NT_EXE_IMAGE_BASE
93 #define NT_EXE_IMAGE_BASE 0x00010000
94 #undef PE_DEF_SECTION_ALIGNMENT
95 #define PE_DEF_SUBSYSTEM 2
96 #undef PE_DEF_FILE_ALIGNMENT
97 #define PE_DEF_FILE_ALIGNMENT 0x00000200
98 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
99 #endif
102 static struct internal_extra_pe_aouthdr pep;
103 static int dll;
104 static flagword real_flags = IMAGE_FILE_LARGE_ADDRESS_AWARE;
105 static int support_old_code = 0;
106 static lang_assignment_statement_type *image_base_statement = 0;
108 #ifdef DLL_SUPPORT
109 static int pep_enable_stdcall_fixup = 1; /* 0=disable 1=enable (default). */
110 static char * pep_out_def_filename = NULL;
111 static char * pep_implib_filename = NULL;
112 static int pep_enable_auto_image_base = 0;
113 static char * pep_dll_search_prefix = NULL;
114 #endif
116 extern const char *output_filename;
118 static void
119 gld_${EMULATION_NAME}_before_parse (void)
120 {
121 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
122 output_filename = "${EXECUTABLE_NAME:-a.exe}";
123 #ifdef DLL_SUPPORT
124 config.dynamic_link = TRUE;
125 config.has_shared = 1;
126 link_info.pei386_auto_import = -1;
127 link_info.pei386_runtime_pseudo_reloc = -1;
129 #if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
130 lang_default_entry ("_WinMainCRTStartup");
131 #else
132 lang_default_entry ("${ENTRY}");
133 #endif
134 #endif
135 }
136 \f
137 /* PE format extra command line options. */
139 /* Used for setting flags in the PE header. */
140 enum options
141 {
142 OPTION_BASE_FILE = 300 + 1,
143 OPTION_DLL,
144 OPTION_FILE_ALIGNMENT,
145 OPTION_IMAGE_BASE,
146 OPTION_MAJOR_IMAGE_VERSION,
147 OPTION_MAJOR_OS_VERSION,
148 OPTION_MAJOR_SUBSYSTEM_VERSION,
149 OPTION_MINOR_IMAGE_VERSION,
150 OPTION_MINOR_OS_VERSION,
151 OPTION_MINOR_SUBSYSTEM_VERSION,
152 OPTION_SECTION_ALIGNMENT,
153 OPTION_STACK,
154 OPTION_SUBSYSTEM,
155 OPTION_HEAP,
156 OPTION_SUPPORT_OLD_CODE,
157 OPTION_OUT_DEF,
158 OPTION_EXPORT_ALL,
159 OPTION_EXCLUDE_SYMBOLS,
160 OPTION_KILL_ATS,
161 OPTION_STDCALL_ALIASES,
162 OPTION_ENABLE_STDCALL_FIXUP,
163 OPTION_DISABLE_STDCALL_FIXUP,
164 OPTION_IMPLIB_FILENAME,
165 OPTION_WARN_DUPLICATE_EXPORTS,
166 OPTION_IMP_COMPAT,
167 OPTION_ENABLE_AUTO_IMAGE_BASE,
168 OPTION_DISABLE_AUTO_IMAGE_BASE,
169 OPTION_DLL_SEARCH_PREFIX,
170 OPTION_NO_DEFAULT_EXCLUDES,
171 OPTION_DLL_ENABLE_AUTO_IMPORT,
172 OPTION_DLL_DISABLE_AUTO_IMPORT,
173 OPTION_ENABLE_EXTRA_PE_DEBUG,
174 OPTION_EXCLUDE_LIBS,
175 OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC,
176 OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC
177 };
179 static void
180 gld${EMULATION_NAME}_add_options
181 (int ns ATTRIBUTE_UNUSED,
182 char **shortopts ATTRIBUTE_UNUSED,
183 int nl,
184 struct option **longopts,
185 int nrl ATTRIBUTE_UNUSED,
186 struct option **really_longopts ATTRIBUTE_UNUSED)
187 {
188 static const struct option xtra_long[] =
189 {
190 /* PE options */
191 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
192 {"dll", no_argument, NULL, OPTION_DLL},
193 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
194 {"heap", required_argument, NULL, OPTION_HEAP},
195 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
196 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
197 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
198 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
199 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
200 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
201 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
202 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
203 {"stack", required_argument, NULL, OPTION_STACK},
204 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
205 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
206 #ifdef DLL_SUPPORT
207 /* getopt allows abbreviations, so we do this to stop it
208 from treating -o as an abbreviation for this option. */
209 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
210 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
211 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
212 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
213 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
214 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
215 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
216 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
217 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
218 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
219 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
220 /* getopt() allows abbreviations, so we do this to stop it from
221 treating -c as an abbreviation for these --compat-implib. */
222 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
223 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
224 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
225 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
226 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
227 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
228 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
229 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
230 {"enable-extra-pep-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
231 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
232 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
233 #endif
234 {NULL, no_argument, NULL, 0}
235 };
237 *longopts = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
238 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
239 }
241 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
242 parameters which may be input from the command line. */
244 typedef struct
245 {
246 void *ptr;
247 int size;
248 int value;
249 char *symbol;
250 int inited;
251 } definfo;
253 #define D(field,symbol,def) {&pep.field,sizeof(pep.field), def, symbol,0}
255 static definfo init[] =
256 {
257 /* imagebase must be first */
258 #define IMAGEBASEOFF 0
259 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
260 #define DLLOFF 1
261 {&dll, sizeof(dll), 0, "__dll__", 0},
262 #define MSIMAGEBASEOFF 2
263 D(ImageBase,"__ImageBase", NT_EXE_IMAGE_BASE),
264 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
265 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
266 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
267 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
268 D(MajorImageVersion,"__major_image_version__", 0),
269 D(MinorImageVersion,"__minor_image_version__", 0),
270 D(MajorSubsystemVersion,"__major_subsystem_version__", 5),
271 D(MinorSubsystemVersion,"__minor_subsystem_version__", 2),
272 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
273 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
274 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
275 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
276 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
277 D(LoaderFlags,"__loader_flags__", 0x0),
278 { NULL, 0, 0, NULL, 0 }
279 };
282 static void
283 gld_${EMULATION_NAME}_list_options (FILE *file)
284 {
285 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
286 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
287 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
288 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
289 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
290 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
291 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
292 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
293 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
294 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
295 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
296 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
297 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
298 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
299 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
300 #ifdef DLL_SUPPORT
301 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
302 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
303 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
304 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
305 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
306 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
307 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
308 fprintf (file, _(" --out-implib <file> Generate import library\n"));
309 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
310 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
311 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
312 create __imp_<SYMBOL> as well.\n"));
313 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
314 unless user specifies one\n"));
315 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
316 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
317 an importlib, use <string><basename>.dll\n\
318 in preference to lib<basename>.dll \n"));
319 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\
320 __imp_sym for DATA references\n"));
321 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
322 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
323 adding pseudo-relocations resolved at\n\
324 runtime.\n"));
325 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
326 auto-imported DATA.\n"));
327 fprintf (file, _(" --enable-extra-pep-debug Enable verbose debug output when building\n\
328 or linking to DLLs (esp. auto-import)\n"));
329 #endif
330 }
333 static void
334 set_pep_name (char *name, long val)
335 {
336 int i;
338 /* Find the name and set it. */
339 for (i = 0; init[i].ptr; i++)
340 {
341 if (strcmp (name, init[i].symbol) == 0)
342 {
343 init[i].value = val;
344 init[i].inited = 1;
345 if (strcmp (name,"__image_base__") == 0)
346 set_pep_name ("__ImageBase", val);
347 return;
348 }
349 }
350 abort ();
351 }
354 static void
355 set_pep_subsystem (void)
356 {
357 const char *sver;
358 const char *entry;
359 const char *initial_symbol_char;
360 char *end;
361 int len;
362 int i;
363 int subsystem;
364 unsigned long temp_subsystem;
365 static const struct
366 {
367 const char *name;
368 const int value;
369 const char *entry;
370 }
371 v[] =
372 {
373 { "native", 1, "NtProcessStartup" },
374 { "windows", 2, "WinMainCRTStartup" },
375 { "console", 3, "mainCRTStartup" },
376 { "posix", 7, "__PosixProcessStartup"},
377 { "wince", 9, "_WinMainCRTStartup" },
378 { "xbox", 14, "mainCRTStartup" },
379 { NULL, 0, NULL }
380 };
381 /* Entry point name for arbitrary subsystem numbers. */
382 static const char default_entry[] = "mainCRTStartup";
384 /* Check for the presence of a version number. */
385 sver = strchr (optarg, ':');
386 if (sver == NULL)
387 len = strlen (optarg);
388 else
389 {
390 len = sver - optarg;
391 set_pep_name ("__major_subsystem_version__",
392 strtoul (sver + 1, &end, 0));
393 if (*end == '.')
394 set_pep_name ("__minor_subsystem_version__",
395 strtoul (end + 1, &end, 0));
396 if (*end != '\0')
397 einfo (_("%P: warning: bad version number in -subsystem option\n"));
398 }
400 /* Check for numeric subsystem. */
401 temp_subsystem = strtoul (optarg, & end, 0);
402 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
403 {
404 /* Search list for a numeric match to use its entry point. */
405 for (i = 0; v[i].name; i++)
406 if (v[i].value == (int) temp_subsystem)
407 break;
409 /* If no match, use the default. */
410 if (v[i].name != NULL)
411 entry = v[i].entry;
412 else
413 entry = default_entry;
415 /* Use this subsystem. */
416 subsystem = (int) temp_subsystem;
417 }
418 else
419 {
420 /* Search for subsystem by name. */
421 for (i = 0; v[i].name; i++)
422 if (strncmp (optarg, v[i].name, len) == 0
423 && v[i].name[len] == '\0')
424 break;
426 if (v[i].name == NULL)
427 {
428 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
429 return;
430 }
432 entry = v[i].entry;
433 subsystem = v[i].value;
434 }
436 set_pep_name ("__subsystem__", subsystem);
438 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
439 if (*initial_symbol_char != '\0')
440 {
441 char *alc_entry;
443 /* lang_default_entry expects its argument to be permanently
444 allocated, so we don't free this string. */
445 alc_entry = xmalloc (strlen (initial_symbol_char)
446 + strlen (entry)
447 + 1);
448 strcpy (alc_entry, initial_symbol_char);
449 strcat (alc_entry, entry);
450 entry = alc_entry;
451 }
453 lang_default_entry (entry);
455 return;
456 }
459 static void
460 set_pep_value (char *name)
461 {
462 char *end;
464 set_pep_name (name, strtoul (optarg, &end, 0));
466 if (end == optarg)
467 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
469 optarg = end;
470 }
473 static void
474 set_pep_stack_heap (char *resname, char *comname)
475 {
476 set_pep_value (resname);
478 if (*optarg == ',')
479 {
480 optarg++;
481 set_pep_value (comname);
482 }
483 else if (*optarg)
484 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
485 }
488 static bfd_boolean
489 gld${EMULATION_NAME}_handle_option (int optc)
490 {
491 switch (optc)
492 {
493 default:
494 return FALSE;
496 case OPTION_BASE_FILE:
497 link_info.base_file = fopen (optarg, FOPEN_WB);
498 if (link_info.base_file == NULL)
499 {
500 /* xgettext:c-format */
501 fprintf (stderr, _("%s: Can't open base file %s\n"),
502 program_name, optarg);
503 xexit (1);
504 }
505 break;
507 /* PE options. */
508 case OPTION_HEAP:
509 set_pep_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
510 break;
511 case OPTION_STACK:
512 set_pep_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
513 break;
514 case OPTION_SUBSYSTEM:
515 set_pep_subsystem ();
516 break;
517 case OPTION_MAJOR_OS_VERSION:
518 set_pep_value ("__major_os_version__");
519 break;
520 case OPTION_MINOR_OS_VERSION:
521 set_pep_value ("__minor_os_version__");
522 break;
523 case OPTION_MAJOR_SUBSYSTEM_VERSION:
524 set_pep_value ("__major_subsystem_version__");
525 break;
526 case OPTION_MINOR_SUBSYSTEM_VERSION:
527 set_pep_value ("__minor_subsystem_version__");
528 break;
529 case OPTION_MAJOR_IMAGE_VERSION:
530 set_pep_value ("__major_image_version__");
531 break;
532 case OPTION_MINOR_IMAGE_VERSION:
533 set_pep_value ("__minor_image_version__");
534 break;
535 case OPTION_FILE_ALIGNMENT:
536 set_pep_value ("__file_alignment__");
537 break;
538 case OPTION_SECTION_ALIGNMENT:
539 set_pep_value ("__section_alignment__");
540 break;
541 case OPTION_DLL:
542 set_pep_name ("__dll__", 1);
543 break;
544 case OPTION_IMAGE_BASE:
545 set_pep_value ("__image_base__");
546 break;
547 case OPTION_SUPPORT_OLD_CODE:
548 support_old_code = 1;
549 break;
550 #ifdef DLL_SUPPORT
551 case OPTION_OUT_DEF:
552 pep_out_def_filename = xstrdup (optarg);
553 break;
554 case OPTION_EXPORT_ALL:
555 pep_dll_export_everything = 1;
556 break;
557 case OPTION_EXCLUDE_SYMBOLS:
558 pep_dll_add_excludes (optarg, 0);
559 break;
560 case OPTION_EXCLUDE_LIBS:
561 pep_dll_add_excludes (optarg, 1);
562 break;
563 case OPTION_KILL_ATS:
564 pep_dll_kill_ats = 1;
565 break;
566 case OPTION_STDCALL_ALIASES:
567 pep_dll_stdcall_aliases = 1;
568 break;
569 case OPTION_ENABLE_STDCALL_FIXUP:
570 pep_enable_stdcall_fixup = 1;
571 break;
572 case OPTION_DISABLE_STDCALL_FIXUP:
573 pep_enable_stdcall_fixup = 0;
574 break;
575 case OPTION_IMPLIB_FILENAME:
576 pep_implib_filename = xstrdup (optarg);
577 break;
578 case OPTION_WARN_DUPLICATE_EXPORTS:
579 pep_dll_warn_dup_exports = 1;
580 break;
581 case OPTION_IMP_COMPAT:
582 pep_dll_compat_implib = 1;
583 break;
584 case OPTION_ENABLE_AUTO_IMAGE_BASE:
585 pep_enable_auto_image_base = 1;
586 break;
587 case OPTION_DISABLE_AUTO_IMAGE_BASE:
588 pep_enable_auto_image_base = 0;
589 break;
590 case OPTION_DLL_SEARCH_PREFIX:
591 pep_dll_search_prefix = xstrdup (optarg);
592 break;
593 case OPTION_NO_DEFAULT_EXCLUDES:
594 pep_dll_do_default_excludes = 0;
595 break;
596 case OPTION_DLL_ENABLE_AUTO_IMPORT:
597 link_info.pei386_auto_import = 1;
598 break;
599 case OPTION_DLL_DISABLE_AUTO_IMPORT:
600 link_info.pei386_auto_import = 0;
601 break;
602 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
603 link_info.pei386_runtime_pseudo_reloc = 1;
604 break;
605 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
606 link_info.pei386_runtime_pseudo_reloc = 0;
607 break;
608 case OPTION_ENABLE_EXTRA_PE_DEBUG:
609 pep_dll_extra_pe_debug = 1;
610 break;
611 #endif
612 }
613 return TRUE;
614 }
615 \f
617 #ifdef DLL_SUPPORT
618 static unsigned long
619 strhash (const char *str)
620 {
621 const unsigned char *s;
622 unsigned long hash;
623 unsigned int c;
624 unsigned int len;
626 hash = 0;
627 len = 0;
628 s = (const unsigned char *) str;
629 while ((c = *s++) != '\0')
630 {
631 hash += c + (c << 17);
632 hash ^= hash >> 2;
633 ++len;
634 }
635 hash += len + (len << 17);
636 hash ^= hash >> 2;
638 return hash;
639 }
641 /* Use the output file to create a image base for relocatable DLLs. */
643 static unsigned long
644 compute_dll_image_base (const char *ofile)
645 {
646 unsigned long hash = strhash (ofile);
647 return 0x61300000 + ((hash << 16) & 0x0FFC0000);
648 }
649 #endif
651 /* Assign values to the special symbols before the linker script is
652 read. */
654 static void
655 gld_${EMULATION_NAME}_set_symbols (void)
656 {
657 /* Run through and invent symbols for all the
658 names and insert the defaults. */
659 int j;
660 lang_statement_list_type *save;
662 if (!init[IMAGEBASEOFF].inited)
663 {
664 if (link_info.relocatable)
665 init[IMAGEBASEOFF].value = 0;
666 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
667 #ifdef DLL_SUPPORT
668 init[IMAGEBASEOFF].value = (pep_enable_auto_image_base) ?
669 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
670 #else
671 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
672 #endif
673 else
674 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
675 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
676 }
678 /* Don't do any symbol assignments if this is a relocatable link. */
679 if (link_info.relocatable)
680 return;
682 /* Glue the assignments into the abs section. */
683 save = stat_ptr;
685 stat_ptr = &(abs_output_section->children);
687 for (j = 0; init[j].ptr; j++)
688 {
689 long val = init[j].value;
690 lang_assignment_statement_type *rv;
691 rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
692 exp_intop (val)));
693 if (init[j].size == sizeof (short))
694 *(short *) init[j].ptr = val;
695 else if (init[j].size == sizeof (int))
696 *(int *) init[j].ptr = val;
697 else if (init[j].size == sizeof (long))
698 *(long *) init[j].ptr = val;
699 /* This might be a long long or other special type. */
700 else if (init[j].size == sizeof (bfd_vma))
701 *(bfd_vma *) init[j].ptr = val;
702 else abort ();
703 if (j == IMAGEBASEOFF)
704 image_base_statement = rv;
705 }
706 /* Restore the pointer. */
707 stat_ptr = save;
709 if (pep.FileAlignment > pep.SectionAlignment)
710 {
711 einfo (_("%P: warning, file alignment > section alignment.\n"));
712 }
713 }
715 /* This is called after the linker script and the command line options
716 have been read. */
718 static void
719 gld_${EMULATION_NAME}_after_parse (void)
720 {
721 /* The Windows libraries are designed for the linker to treat the
722 entry point as an undefined symbol. Otherwise, the .obj that
723 defines mainCRTStartup is brought in because it is the first
724 encountered in libc.lib and it has other symbols in it which will
725 be pulled in by the link process. To avoid this, we act as
726 though the user specified -u with the entry point symbol.
728 This function is called after the linker script and command line
729 options have been read, so at this point we know the right entry
730 point. This function is called before the input files are
731 opened, so registering the symbol as undefined will make a
732 difference. */
734 if (! link_info.relocatable && entry_symbol.name != NULL)
735 ldlang_add_undef (entry_symbol.name);
736 }
738 /* pep-dll.c directly accesses pep_data_import_dll,
739 so it must be defined outside of #ifdef DLL_SUPPORT.
740 Note - this variable is deliberately not initialised.
741 This allows it to be treated as a common varaible, and only
742 exist in one incarnation in a multiple target enabled linker. */
743 char * pep_data_import_dll;
745 #ifdef DLL_SUPPORT
746 static struct bfd_link_hash_entry *pep_undef_found_sym;
748 static bfd_boolean
749 pep_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
750 {
751 int sl;
752 char *string = inf;
754 sl = strlen (string);
755 if (h->type == bfd_link_hash_defined
756 && strncmp (h->root.string, string, sl) == 0
757 && h->root.string[sl] == '@')
758 {
759 pep_undef_found_sym = h;
760 return FALSE;
761 }
762 return TRUE;
763 }
765 static void
766 pep_fixup_stdcalls (void)
767 {
768 static int gave_warning_message = 0;
769 struct bfd_link_hash_entry *undef, *sym;
771 if (pep_dll_extra_pe_debug)
772 printf ("%s\n", __FUNCTION__);
774 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
775 if (undef->type == bfd_link_hash_undefined)
776 {
777 char* at = strchr (undef->root.string, '@');
778 int lead_at = (*undef->root.string == '@');
779 /* For now, don't try to fixup fastcall symbols. */
781 if (at && !lead_at)
782 {
783 /* The symbol is a stdcall symbol, so let's look for a
784 cdecl symbol with the same name and resolve to that. */
785 char *cname = xstrdup (undef->root.string /* + lead_at */);
786 at = strchr (cname, '@');
787 *at = 0;
788 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
790 if (sym && sym->type == bfd_link_hash_defined)
791 {
792 undef->type = bfd_link_hash_defined;
793 undef->u.def.value = sym->u.def.value;
794 undef->u.def.section = sym->u.def.section;
796 if (pep_enable_stdcall_fixup == -1)
797 {
798 einfo (_("Warning: resolving %s by linking to %s\n"),
799 undef->root.string, cname);
800 if (! gave_warning_message)
801 {
802 gave_warning_message = 1;
803 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
804 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
805 }
806 }
807 }
808 }
809 else
810 {
811 /* The symbol is a cdecl symbol, so we look for stdcall
812 symbols - which means scanning the whole symbol table. */
813 pep_undef_found_sym = 0;
814 bfd_link_hash_traverse (link_info.hash, pep_undef_cdecl_match,
815 (char *) undef->root.string);
816 sym = pep_undef_found_sym;
817 if (sym)
818 {
819 undef->type = bfd_link_hash_defined;
820 undef->u.def.value = sym->u.def.value;
821 undef->u.def.section = sym->u.def.section;
823 if (pep_enable_stdcall_fixup == -1)
824 {
825 einfo (_("Warning: resolving %s by linking to %s\n"),
826 undef->root.string, sym->root.string);
827 if (! gave_warning_message)
828 {
829 gave_warning_message = 1;
830 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
831 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
832 }
833 }
834 }
835 }
836 }
837 }
839 static int
840 make_import_fixup (arelent *rel, asection *s)
841 {
842 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
843 char addend[4];
845 if (pep_dll_extra_pe_debug)
846 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
847 (long) rel->address, (long) rel->addend);
849 if (! bfd_get_section_contents (s->owner, s, addend, rel->address, sizeof (addend)))
850 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
851 s->owner, s, rel->address);
853 pep_create_import_fixup (rel, s, bfd_get_32 (s->owner, addend));
855 return 1;
856 }
858 static void
859 pep_find_data_imports (void)
860 {
861 struct bfd_link_hash_entry *undef, *sym;
863 if (link_info.pei386_auto_import == 0)
864 return;
866 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
867 {
868 if (undef->type == bfd_link_hash_undefined)
869 {
870 /* C++ symbols are *long*. */
871 char buf[4096];
873 if (pep_dll_extra_pe_debug)
874 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
876 sprintf (buf, "__imp_%s", undef->root.string);
878 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
880 if (sym && sym->type == bfd_link_hash_defined)
881 {
882 bfd *b = sym->u.def.section->owner;
883 asymbol **symbols;
884 int nsyms, symsize, i;
886 if (link_info.pei386_auto_import == -1)
887 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
888 undef->root.string, buf);
890 symsize = bfd_get_symtab_upper_bound (b);
891 symbols = xmalloc (symsize);
892 nsyms = bfd_canonicalize_symtab (b, symbols);
894 for (i = 0; i < nsyms; i++)
895 {
896 if (! CONST_STRNEQ (symbols[i]->name, "__head_"))
897 continue;
899 if (pep_dll_extra_pe_debug)
900 printf ("->%s\n", symbols[i]->name);
902 pep_data_import_dll = (char*) (symbols[i]->name +
903 sizeof ("__head_") - 1);
904 break;
905 }
907 pep_walk_relocs_of_symbol (&link_info, undef->root.string,
908 make_import_fixup);
910 /* Let's differentiate it somehow from defined. */
911 undef->type = bfd_link_hash_defweak;
912 /* We replace original name with __imp_ prefixed, this
913 1) may trash memory 2) leads to duplicate symbol generation.
914 Still, IMHO it's better than having name poluted. */
915 undef->root.string = sym->root.string;
916 undef->u.def.value = sym->u.def.value;
917 undef->u.def.section = sym->u.def.section;
918 }
919 }
920 }
921 }
923 static bfd_boolean
924 pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
925 {
926 if (pep_dll_extra_pe_debug)
927 printf ("+%s\n", h->string);
929 return TRUE;
930 }
931 #endif /* DLL_SUPPORT */
934 static void
935 gld_${EMULATION_NAME}_after_open (void)
936 {
937 #ifdef DLL_SUPPORT
938 if (pep_dll_extra_pe_debug)
939 {
940 bfd *a;
941 struct bfd_link_hash_entry *sym;
943 printf ("%s()\n", __FUNCTION__);
945 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
946 printf ("-%s\n", sym->root.string);
947 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
949 for (a = link_info.input_bfds; a; a = a->link_next)
950 printf ("*%s\n",a->filename);
951 }
952 #endif
954 /* Pass the wacky PE command line options into the output bfd.
955 FIXME: This should be done via a function, rather than by
956 including an internal BFD header. */
958 if (coff_data (output_bfd) == NULL || coff_data (output_bfd)->pe == 0)
959 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"), output_bfd);
961 pe_data (output_bfd)->pe_opthdr = pep;
962 pe_data (output_bfd)->dll = init[DLLOFF].value;
963 pe_data (output_bfd)->real_flags |= real_flags;
965 #ifdef DLL_SUPPORT
966 if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */
967 pep_fixup_stdcalls ();
969 pep_process_import_defs (output_bfd, & link_info);
971 pep_find_data_imports ();
973 #ifndef TARGET_IS_i386pep
974 if (link_info.shared)
975 #else
976 if (!link_info.relocatable)
977 #endif
978 pep_dll_build_sections (output_bfd, &link_info);
980 #ifndef TARGET_IS_i386pep
981 else
982 pep_exe_build_sections (output_bfd, &link_info);
983 #endif
984 #endif /* DLL_SUPPORT */
986 {
987 /* This next chunk of code tries to detect the case where you have
988 two import libraries for the same DLL (specifically,
989 symbolically linking libm.a and libc.a in cygwin to
990 libcygwin.a). In those cases, it's possible for function
991 thunks from the second implib to be used but without the
992 head/tail objects, causing an improper import table. We detect
993 those cases and rename the "other" import libraries to match
994 the one the head/tail come from, so that the linker will sort
995 things nicely and produce a valid import table. */
997 LANG_FOR_EACH_INPUT_STATEMENT (is)
998 {
999 if (is->the_bfd->my_archive)
1000 {
1001 int idata2 = 0, reloc_count=0, is_imp = 0;
1002 asection *sec;
1004 /* See if this is an import library thunk. */
1005 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1006 {
1007 if (strcmp (sec->name, ".idata\$2") == 0)
1008 idata2 = 1;
1009 if (CONST_STRNEQ (sec->name, ".idata\$"))
1010 is_imp = 1;
1011 reloc_count += sec->reloc_count;
1012 }
1014 if (is_imp && !idata2 && reloc_count)
1015 {
1016 /* It is, look for the reference to head and see if it's
1017 from our own library. */
1018 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1019 {
1020 int i;
1021 long symsize;
1022 long relsize;
1023 asymbol **symbols;
1024 arelent **relocs;
1025 int nrelocs;
1027 symsize = bfd_get_symtab_upper_bound (is->the_bfd);
1028 if (symsize < 1)
1029 break;
1030 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1031 if (relsize < 1)
1032 break;
1034 symbols = xmalloc (symsize);
1035 symsize = bfd_canonicalize_symtab (is->the_bfd, symbols);
1036 if (symsize < 0)
1037 {
1038 einfo ("%X%P: unable to process symbols: %E");
1039 return;
1040 }
1042 relocs = xmalloc ((size_t) relsize);
1043 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1044 relocs, symbols);
1045 if (nrelocs < 0)
1046 {
1047 free (relocs);
1048 einfo ("%X%P: unable to process relocs: %E");
1049 return;
1050 }
1052 for (i = 0; i < nrelocs; i++)
1053 {
1054 struct bfd_symbol *s;
1055 struct bfd_link_hash_entry * blhe;
1056 char *other_bfd_filename;
1057 char *n;
1059 s = (relocs[i]->sym_ptr_ptr)[0];
1061 if (s->flags & BSF_LOCAL)
1062 continue;
1064 /* Thunk section with reloc to another bfd. */
1065 blhe = bfd_link_hash_lookup (link_info.hash,
1066 s->name,
1067 FALSE, FALSE, TRUE);
1069 if (blhe == NULL
1070 || blhe->type != bfd_link_hash_defined)
1071 continue;
1073 other_bfd_filename
1074 = blhe->u.def.section->owner->my_archive
1075 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1076 : bfd_get_filename (blhe->u.def.section->owner);
1078 if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
1079 other_bfd_filename) == 0)
1080 continue;
1082 /* Rename this implib to match the other one. */
1083 n = xmalloc (strlen (other_bfd_filename) + 1);
1084 strcpy (n, other_bfd_filename);
1085 is->the_bfd->my_archive->filename = n;
1086 }
1088 free (relocs);
1089 /* Note - we do not free the symbols,
1090 they are now cached in the BFD. */
1091 }
1092 }
1093 }
1094 }
1095 }
1097 {
1098 int is_ms_arch = 0;
1099 bfd *cur_arch = 0;
1100 lang_input_statement_type *is2;
1101 lang_input_statement_type *is3;
1103 /* Careful - this is a shell script. Watch those dollar signs! */
1104 /* Microsoft import libraries have every member named the same,
1105 and not in the right order for us to link them correctly. We
1106 must detect these and rename the members so that they'll link
1107 correctly. There are three types of objects: the head, the
1108 thunks, and the sentinel(s). The head is easy; it's the one
1109 with idata2. We assume that the sentinels won't have relocs,
1110 and the thunks will. It's easier than checking the symbol
1111 table for external references. */
1112 LANG_FOR_EACH_INPUT_STATEMENT (is)
1113 {
1114 if (is->the_bfd->my_archive)
1115 {
1116 char *pnt;
1117 bfd *arch = is->the_bfd->my_archive;
1119 if (cur_arch != arch)
1120 {
1121 cur_arch = arch;
1122 is_ms_arch = 1;
1124 for (is3 = is;
1125 is3 && is3->the_bfd->my_archive == arch;
1126 is3 = (lang_input_statement_type *) is3->next)
1127 {
1128 /* A MS dynamic import library can also contain static
1129 members, so look for the first element with a .dll
1130 extension, and use that for the remainder of the
1131 comparisons. */
1132 pnt = strrchr (is3->the_bfd->filename, '.');
1133 if (pnt != NULL && strcmp (pnt, ".dll") == 0)
1134 break;
1135 }
1137 if (is3 == NULL)
1138 is_ms_arch = 0;
1139 else
1140 {
1141 /* OK, found one. Now look to see if the remaining
1142 (dynamic import) members use the same name. */
1143 for (is2 = is;
1144 is2 && is2->the_bfd->my_archive == arch;
1145 is2 = (lang_input_statement_type *) is2->next)
1146 {
1147 /* Skip static members, ie anything with a .obj
1148 extension. */
1149 pnt = strrchr (is2->the_bfd->filename, '.');
1150 if (pnt != NULL && strcmp (pnt, ".obj") == 0)
1151 continue;
1153 if (strcmp (is3->the_bfd->filename,
1154 is2->the_bfd->filename))
1155 {
1156 is_ms_arch = 0;
1157 break;
1158 }
1159 }
1160 }
1161 }
1163 /* This fragment might have come from an .obj file in a Microsoft
1164 import, and not an actual import record. If this is the case,
1165 then leave the filename alone. */
1166 pnt = strrchr (is->the_bfd->filename, '.');
1168 if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
1169 {
1170 int idata2 = 0, reloc_count=0;
1171 asection *sec;
1172 char *new_name, seq;
1174 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1175 {
1176 if (strcmp (sec->name, ".idata\$2") == 0)
1177 idata2 = 1;
1178 reloc_count += sec->reloc_count;
1179 }
1181 if (idata2) /* .idata2 is the TOC */
1182 seq = 'a';
1183 else if (reloc_count > 0) /* thunks */
1184 seq = 'b';
1185 else /* sentinel */
1186 seq = 'c';
1188 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1189 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1190 is->the_bfd->filename = new_name;
1192 new_name = xmalloc (strlen (is->filename) + 3);
1193 sprintf (new_name, "%s.%c", is->filename, seq);
1194 is->filename = new_name;
1195 }
1196 }
1197 }
1198 }
1199 }
1200 \f
1201 static void
1202 gld_${EMULATION_NAME}_before_allocation (void)
1203 {
1204 before_allocation_default ();
1205 }
1206 \f
1207 #ifdef DLL_SUPPORT
1208 /* This is called when an input file isn't recognized as a BFD. We
1209 check here for .DEF files and pull them in automatically. */
1211 static int
1212 saw_option (char *option)
1213 {
1214 int i;
1216 for (i = 0; init[i].ptr; i++)
1217 if (strcmp (init[i].symbol, option) == 0)
1218 return init[i].inited;
1219 return 0;
1220 }
1221 #endif /* DLL_SUPPORT */
1223 static bfd_boolean
1224 gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1225 {
1226 #ifdef DLL_SUPPORT
1227 const char *ext = entry->filename + strlen (entry->filename) - 4;
1229 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1230 {
1231 pep_def_file = def_file_parse (entry->filename, pep_def_file);
1233 if (pep_def_file)
1234 {
1235 int i, buflen=0, len;
1236 char *buf;
1238 for (i = 0; i < pep_def_file->num_exports; i++)
1239 {
1240 len = strlen (pep_def_file->exports[i].internal_name);
1241 if (buflen < len + 2)
1242 buflen = len + 2;
1243 }
1245 buf = xmalloc (buflen);
1247 for (i = 0; i < pep_def_file->num_exports; i++)
1248 {
1249 struct bfd_link_hash_entry *h;
1251 sprintf (buf, "_%s", pep_def_file->exports[i].internal_name);
1253 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1254 if (h == (struct bfd_link_hash_entry *) NULL)
1255 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1256 if (h->type == bfd_link_hash_new)
1257 {
1258 h->type = bfd_link_hash_undefined;
1259 h->u.undef.abfd = NULL;
1260 bfd_link_add_undef (link_info.hash, h);
1261 }
1262 }
1263 free (buf);
1265 /* def_file_print (stdout, pep_def_file); */
1266 if (pep_def_file->is_dll == 1)
1267 link_info.shared = 1;
1269 if (pep_def_file->base_address != (bfd_vma)(-1))
1270 {
1271 pep.ImageBase =
1272 pe_data (output_bfd)->pe_opthdr.ImageBase =
1273 init[IMAGEBASEOFF].value = pep_def_file->base_address;
1274 init[IMAGEBASEOFF].inited = 1;
1275 if (image_base_statement)
1276 image_base_statement->exp =
1277 exp_assop ('=', "__image_base__", exp_intop (pep.ImageBase));
1278 }
1280 if (pep_def_file->stack_reserve != -1
1281 && ! saw_option ("__size_of_stack_reserve__"))
1282 {
1283 pep.SizeOfStackReserve = pep_def_file->stack_reserve;
1284 if (pep_def_file->stack_commit != -1)
1285 pep.SizeOfStackCommit = pep_def_file->stack_commit;
1286 }
1287 if (pep_def_file->heap_reserve != -1
1288 && ! saw_option ("__size_of_heap_reserve__"))
1289 {
1290 pep.SizeOfHeapReserve = pep_def_file->heap_reserve;
1291 if (pep_def_file->heap_commit != -1)
1292 pep.SizeOfHeapCommit = pep_def_file->heap_commit;
1293 }
1294 return TRUE;
1295 }
1296 }
1297 #endif
1298 return FALSE;
1299 }
1301 static bfd_boolean
1302 gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1303 {
1304 #ifdef DLL_SUPPORT
1305 #ifdef TARGET_IS_i386pep
1306 pep_dll_id_target ("pei-x86-64");
1307 #endif
1308 if (pep_bfd_is_dll (entry->the_bfd))
1309 return pep_implied_import_dll (entry->filename);
1310 #endif
1311 return FALSE;
1312 }
1314 static void
1315 gld_${EMULATION_NAME}_finish (void)
1316 {
1317 finish_default ();
1319 #ifdef DLL_SUPPORT
1320 if (link_info.shared
1321 || (!link_info.relocatable && pep_def_file->num_exports != 0))
1322 {
1323 pep_dll_fill_sections (output_bfd, &link_info);
1324 if (pep_implib_filename)
1325 pep_dll_generate_implib (pep_def_file, pep_implib_filename);
1326 }
1328 if (pep_out_def_filename)
1329 pep_dll_generate_def_file (pep_out_def_filename);
1330 #endif /* DLL_SUPPORT */
1332 /* I don't know where .idata gets set as code, but it shouldn't be. */
1333 {
1334 asection *asec = bfd_get_section_by_name (output_bfd, ".idata");
1336 if (asec)
1337 {
1338 asec->flags &= ~SEC_CODE;
1339 asec->flags |= SEC_DATA;
1340 }
1341 }
1342 }
1344 \f
1345 /* Place an orphan section.
1347 We use this to put sections in a reasonable place in the file, and
1348 to ensure that they are aligned as required.
1350 We handle grouped sections here as well. A section named .foo$nn
1351 goes into the output section .foo. All grouped sections are sorted
1352 by name.
1354 Grouped sections for the default sections are handled by the
1355 default linker script using wildcards, and are sorted by
1356 sort_sections. */
1358 static bfd_boolean
1359 gld_${EMULATION_NAME}_place_orphan (asection *s)
1360 {
1361 const char *secname;
1362 const char *orig_secname;
1363 char *dollar = NULL;
1364 lang_output_section_statement_type *os;
1365 lang_statement_list_type add_child;
1367 secname = bfd_get_section_name (s->owner, s);
1369 /* Look through the script to see where to place this section. */
1370 orig_secname = secname;
1371 if (!link_info.relocatable
1372 && (dollar = strchr (secname, '$')) != NULL)
1373 {
1374 size_t len = dollar - orig_secname;
1375 char *newname = xmalloc (len + 1);
1376 memcpy (newname, orig_secname, len);
1377 newname[len] = '\0';
1378 secname = newname;
1379 }
1381 os = lang_output_section_find (secname);
1383 lang_list_init (&add_child);
1385 if (os != NULL
1386 && (os->bfd_section == NULL
1387 || os->bfd_section->flags == 0
1388 || ((s->flags ^ os->bfd_section->flags)
1389 & (SEC_LOAD | SEC_ALLOC)) == 0))
1390 {
1391 /* We already have an output section statement with this
1392 name, and its bfd section, if any, has compatible flags.
1393 If the section already exists but does not have any flags set,
1394 then it has been created by the linker, probably as a result of
1395 a --section-start command line switch. */
1396 lang_add_section (&add_child, s, os);
1397 }
1398 else
1399 {
1400 static struct orphan_save hold[] =
1401 {
1402 { ".text",
1403 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1404 0, 0, 0, 0 },
1405 { ".rdata",
1406 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1407 0, 0, 0, 0 },
1408 { ".data",
1409 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1410 0, 0, 0, 0 },
1411 { ".bss",
1412 SEC_ALLOC,
1413 0, 0, 0, 0 }
1414 };
1415 enum orphan_save_index
1416 {
1417 orphan_text = 0,
1418 orphan_rodata,
1419 orphan_data,
1420 orphan_bss
1421 };
1422 static int orphan_init_done = 0;
1423 struct orphan_save *place;
1424 lang_output_section_statement_type *after;
1425 etree_type *address;
1427 if (!orphan_init_done)
1428 {
1429 struct orphan_save *ho;
1430 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1431 if (ho->name != NULL)
1432 {
1433 ho->os = lang_output_section_find (ho->name);
1434 if (ho->os != NULL && ho->os->flags == 0)
1435 ho->os->flags = ho->flags;
1436 }
1437 orphan_init_done = 1;
1438 }
1440 /* Try to put the new output section in a reasonable place based
1441 on the section name and section flags. */
1443 place = NULL;
1444 if ((s->flags & SEC_ALLOC) == 0)
1445 ;
1446 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1447 place = &hold[orphan_bss];
1448 else if ((s->flags & SEC_READONLY) == 0)
1449 place = &hold[orphan_data];
1450 else if ((s->flags & SEC_CODE) == 0)
1451 place = &hold[orphan_rodata];
1452 else
1453 place = &hold[orphan_text];
1455 after = NULL;
1456 if (place != NULL)
1457 {
1458 if (place->os == NULL)
1459 place->os = lang_output_section_find (place->name);
1460 after = place->os;
1461 if (after == NULL)
1462 after = lang_output_section_find_by_flags (s, &place->os, NULL);
1463 if (after == NULL)
1464 /* *ABS* is always the first output section statement. */
1465 after = (&lang_output_section_statement.head
1466 ->output_section_statement);
1467 }
1469 /* Choose a unique name for the section. This will be needed if the
1470 same section name appears in the input file with different
1471 loadable or allocatable characteristics. */
1472 if (bfd_get_section_by_name (output_bfd, secname) != NULL)
1473 {
1474 static int count = 1;
1475 secname = bfd_get_unique_section_name (output_bfd, secname, &count);
1476 if (secname == NULL)
1477 einfo ("%F%P: place_orphan failed: %E\n");
1478 }
1480 /* All sections in an executable must be aligned to a page boundary. */
1481 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
1482 os = lang_insert_orphan (s, secname, after, place, address, &add_child);
1483 }
1485 {
1486 lang_statement_union_type **pl = &os->children.head;
1488 if (dollar != NULL)
1489 {
1490 bfd_boolean found_dollar;
1492 /* The section name has a '$'. Sort it with the other '$'
1493 sections. */
1494 found_dollar = FALSE;
1495 for ( ; *pl != NULL; pl = &(*pl)->header.next)
1496 {
1497 lang_input_section_type *ls;
1498 const char *lname;
1500 if ((*pl)->header.type != lang_input_section_enum)
1501 continue;
1503 ls = &(*pl)->input_section;
1505 lname = bfd_get_section_name (ls->section->owner, ls->section);
1506 if (strchr (lname, '$') == NULL)
1507 {
1508 if (found_dollar)
1509 break;
1510 }
1511 else
1512 {
1513 found_dollar = TRUE;
1514 if (strcmp (orig_secname, lname) < 0)
1515 break;
1516 }
1517 }
1518 }
1520 if (add_child.head != NULL)
1521 {
1522 add_child.head->header.next = *pl;
1523 *pl = add_child.head;
1524 }
1525 }
1527 return TRUE;
1528 }
1530 static bfd_boolean
1531 gld_${EMULATION_NAME}_open_dynamic_archive
1532 (const char *arch ATTRIBUTE_UNUSED,
1533 search_dirs_type *search,
1534 lang_input_statement_type *entry)
1535 {
1536 static const struct
1537 {
1538 const char * format;
1539 bfd_boolean use_prefix;
1540 }
1541 libname_fmt [] =
1542 {
1543 /* Preferred explicit import library for dll's. */
1544 { "lib%s.dll.a", FALSE },
1545 /* Alternate explicit import library for dll's. */
1546 { "%s.dll.a", FALSE },
1547 /* "libfoo.a" could be either an import lib or a static lib.
1548 For backwards compatibility, libfoo.a needs to precede
1549 libfoo.dll and foo.dll in the search. */
1550 { "lib%s.a", FALSE },
1551 /* The 'native' spelling of an import lib name is "foo.lib". */
1552 { "%s.lib", FALSE },
1553 #ifdef DLL_SUPPORT
1554 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
1555 { "%s%s.dll", TRUE },
1556 #endif
1557 /* Try "libfoo.dll" (default preferred dll name). */
1558 { "lib%s.dll", FALSE },
1559 /* Finally try 'native' dll name "foo.dll". */
1560 { "%s.dll", FALSE },
1561 /* Note: If adding more formats to this table, make sure to check to
1562 see if their length is longer than libname_fmt[0].format, and if
1563 so, update the call to xmalloc() below. */
1564 { NULL, FALSE }
1565 };
1566 static unsigned int format_max_len = 0;
1567 const char * filename;
1568 char * full_string;
1569 char * base_string;
1570 unsigned int i;
1573 if (! entry->is_archive)
1574 return FALSE;
1576 filename = entry->filename;
1578 if (format_max_len == 0)
1579 /* We need to allow space in the memory that we are going to allocate
1580 for the characters in the format string. Since the format array is
1581 static we only need to calculate this information once. In theory
1582 this value could also be computed statically, but this introduces
1583 the possibility for a discrepancy and hence a possible memory
1584 corruption. The lengths we compute here will be too long because
1585 they will include any formating characters (%s) in the strings, but
1586 this will not matter. */
1587 for (i = 0; libname_fmt[i].format; i++)
1588 if (format_max_len < strlen (libname_fmt[i].format))
1589 format_max_len = strlen (libname_fmt[i].format);
1591 full_string = xmalloc (strlen (search->name)
1592 + strlen (filename)
1593 + format_max_len
1594 #ifdef DLL_SUPPORT
1595 + (pep_dll_search_prefix
1596 ? strlen (pep_dll_search_prefix) : 0)
1597 #endif
1598 /* Allow for the terminating NUL and for the path
1599 separator character that is inserted between
1600 search->name and the start of the format string. */
1601 + 2);
1603 sprintf (full_string, "%s/", search->name);
1604 base_string = full_string + strlen (full_string);
1606 for (i = 0; libname_fmt[i].format; i++)
1607 {
1608 #ifdef DLL_SUPPORT
1609 if (libname_fmt[i].use_prefix)
1610 {
1611 if (!pep_dll_search_prefix)
1612 continue;
1613 sprintf (base_string, libname_fmt[i].format, pep_dll_search_prefix, filename);
1614 }
1615 else
1616 #endif
1617 sprintf (base_string, libname_fmt[i].format, filename);
1619 if (ldfile_try_open_bfd (full_string, entry))
1620 break;
1621 }
1623 if (!libname_fmt[i].format)
1624 {
1625 free (full_string);
1626 return FALSE;
1627 }
1629 entry->filename = full_string;
1631 return TRUE;
1632 }
1634 static int
1635 gld_${EMULATION_NAME}_find_potential_libraries
1636 (char *name, lang_input_statement_type *entry)
1637 {
1638 return ldfile_open_file_search (name, entry, "", ".lib");
1639 }
1640 \f
1641 static char *
1642 gld_${EMULATION_NAME}_get_script (int *isfile)
1643 EOF
1644 # Scripts compiled in.
1645 # sed commands to quote an ld script as a C string.
1646 sc="-f stringify.sed"
1648 fragment <<EOF
1649 {
1650 *isfile = 0;
1652 if (link_info.relocatable && config.build_constructors)
1653 return
1654 EOF
1655 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1656 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1657 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1658 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1659 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1660 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1661 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1662 echo ' ; else return' >> e${EMULATION_NAME}.c
1663 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1664 echo '; }' >> e${EMULATION_NAME}.c
1666 fragment <<EOF
1669 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1670 {
1671 gld_${EMULATION_NAME}_before_parse,
1672 syslib_default,
1673 hll_default,
1674 gld_${EMULATION_NAME}_after_parse,
1675 gld_${EMULATION_NAME}_after_open,
1676 after_allocation_default,
1677 set_output_arch_default,
1678 ldemul_default_target,
1679 gld_${EMULATION_NAME}_before_allocation,
1680 gld_${EMULATION_NAME}_get_script,
1681 "${EMULATION_NAME}",
1682 "${OUTPUT_FORMAT}",
1683 gld_${EMULATION_NAME}_finish,
1684 NULL, /* Create output section statements. */
1685 gld_${EMULATION_NAME}_open_dynamic_archive,
1686 gld_${EMULATION_NAME}_place_orphan,
1687 gld_${EMULATION_NAME}_set_symbols,
1688 NULL, /* parse_args */
1689 gld${EMULATION_NAME}_add_options,
1690 gld${EMULATION_NAME}_handle_option,
1691 gld_${EMULATION_NAME}_unrecognized_file,
1692 gld_${EMULATION_NAME}_list_options,
1693 gld_${EMULATION_NAME}_recognized_file,
1694 gld_${EMULATION_NAME}_find_potential_libraries,
1695 NULL /* new_vers_pattern. */
1696 };
1697 EOF