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[deliverable/binutils-gdb.git] / ld / emultempl / pep.em
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99ad8390
NC		 1# This shell script emits a C file. -*- C -*-
2# It does some substitutions.
3test -z "${ENTRY}" && ENTRY="_mainCRTStartup"
4if [ -z "$MACHINE" ]; then
5 OUTPUT_ARCH=${ARCH}
6else
7 OUTPUT_ARCH=${ARCH}:${MACHINE}
8fi
9rm -f e${EMULATION_NAME}.c
10(echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
92b93329 11fragment <<EOF
f13a99db 12/* Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
f96b4a7b
NC		 13 Written by Kai Tietz, OneVision Software GmbH&CoKg.
14
15 This file is part of the GNU Binutils.
99ad8390
NC		 16
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
f96b4a7b 19 the Free Software Foundation; either version 3 of the License, or
99ad8390
NC		 20 (at your option) any later version.
21
22 This program is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 GNU General Public License for more details.
26
27 You should have received a copy of the GNU General Public License
28 along with this program; if not, write to the Free Software
f96b4a7b
NC		 29 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
30 MA 02110-1301, USA. */
31
99ad8390
NC		 32
33/* For WINDOWS_XP64 and higher */
34/* Based on pe.em, but modified for 64 bit support. */
35
36#define TARGET_IS_${EMULATION_NAME}
37
38#define COFF_IMAGE_WITH_PE
39#define COFF_WITH_PE
40#define COFF_WITH_pex64
41
99ad8390 42#include "sysdep.h"
3db64b00 43#include "bfd.h"
99ad8390
NC		 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"
58
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"
63
64/* FIXME: This is a BFD internal header file, and we should not be
65 using it here. */
66#include "../bfd/libcoff.h"
67
68#undef AOUTSZ
69#define AOUTSZ PEPAOUTSZ
70#define PEAOUTHDR PEPAOUTHDR
71
72#include "deffile.h"
73#include "pep-dll.h"
74#include "safe-ctype.h"
75
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 ${OVERRIDE_SECTION_ALIGNMENT}
83#endif
84
85#ifdef TARGET_IS_i386pep
86#define DLL_SUPPORT
87#endif
88
89#if defined(TARGET_IS_i386pep) || ! defined(DLL_SUPPORT)
90#define PE_DEF_SUBSYSTEM 3
91#else
92#undef NT_EXE_IMAGE_BASE
93#define NT_EXE_IMAGE_BASE 0x00010000
94#undef PE_DEF_SECTION_ALIGNMENT
95#define PE_DEF_SUBSYSTEM 2
96#undef PE_DEF_FILE_ALIGNMENT
97#define PE_DEF_FILE_ALIGNMENT 0x00000200
98#define PE_DEF_SECTION_ALIGNMENT 0x00000400
99#endif
100
101
102static struct internal_extra_pe_aouthdr pep;
103static int dll;
104static flagword real_flags = IMAGE_FILE_LARGE_ADDRESS_AWARE;
105static int support_old_code = 0;
106static lang_assignment_statement_type *image_base_statement = 0;
107
108#ifdef DLL_SUPPORT
880383ca 109static int pep_enable_stdcall_fixup = 1; /* 0=disable 1=enable (default). */
99ad8390
NC		 110static char * pep_out_def_filename = NULL;
111static char * pep_implib_filename = NULL;
112static int pep_enable_auto_image_base = 0;
113static char * pep_dll_search_prefix = NULL;
114#endif
115
116extern const char *output_filename;
117
118static void
119gld_${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;
6cb442d3 127 link_info.pei386_runtime_pseudo_reloc = 2; /* Use by default version 2. */
99ad8390
NC		 128
129#if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
130 lang_default_entry ("_WinMainCRTStartup");
131#else
132 lang_default_entry ("${ENTRY}");
133#endif
134#endif
135}
136\f
137/* PE format extra command line options. */
138
139/* Used for setting flags in the PE header. */
140enum options
141{
142 OPTION_BASE_FILE = 300 + 1,
143 OPTION_DLL,
144 OPTION_FILE_ALIGNMENT,
145 OPTION_IMAGE_BASE,
146 OPTION_MAJOR_IMAGE_VERSION,
147 OPTION_MAJOR_OS_VERSION,
148 OPTION_MAJOR_SUBSYSTEM_VERSION,
149 OPTION_MINOR_IMAGE_VERSION,
150 OPTION_MINOR_OS_VERSION,
151 OPTION_MINOR_SUBSYSTEM_VERSION,
152 OPTION_SECTION_ALIGNMENT,
153 OPTION_STACK,
154 OPTION_SUBSYSTEM,
155 OPTION_HEAP,
156 OPTION_SUPPORT_OLD_CODE,
157 OPTION_OUT_DEF,
158 OPTION_EXPORT_ALL,
159 OPTION_EXCLUDE_SYMBOLS,
160 OPTION_KILL_ATS,
161 OPTION_STDCALL_ALIASES,
162 OPTION_ENABLE_STDCALL_FIXUP,
163 OPTION_DISABLE_STDCALL_FIXUP,
164 OPTION_IMPLIB_FILENAME,
165 OPTION_WARN_DUPLICATE_EXPORTS,
166 OPTION_IMP_COMPAT,
167 OPTION_ENABLE_AUTO_IMAGE_BASE,
168 OPTION_DISABLE_AUTO_IMAGE_BASE,
169 OPTION_DLL_SEARCH_PREFIX,
170 OPTION_NO_DEFAULT_EXCLUDES,
171 OPTION_DLL_ENABLE_AUTO_IMPORT,
172 OPTION_DLL_DISABLE_AUTO_IMPORT,
173 OPTION_ENABLE_EXTRA_PE_DEBUG,
174 OPTION_EXCLUDE_LIBS,
175 OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC,
6cb442d3
KT		 176 OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC,
177 OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1,
e1c37eb5 178 OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2,
ce11ba6c
KT		 179 OPTION_EXCLUDE_MODULES_FOR_IMPLIB,
180 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES
99ad8390
NC		 181};
182
183static void
184gld${EMULATION_NAME}_add_options
185 (int ns ATTRIBUTE_UNUSED,
186 char **shortopts ATTRIBUTE_UNUSED,
187 int nl,
188 struct option **longopts,
189 int nrl ATTRIBUTE_UNUSED,
190 struct option **really_longopts ATTRIBUTE_UNUSED)
191{
192 static const struct option xtra_long[] =
193 {
194 /* PE options */
195 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
196 {"dll", no_argument, NULL, OPTION_DLL},
197 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
198 {"heap", required_argument, NULL, OPTION_HEAP},
199 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
200 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
201 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
202 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
203 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
204 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
205 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
206 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
207 {"stack", required_argument, NULL, OPTION_STACK},
208 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
209 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
ce11ba6c
KT		 210 {"use-nul-prefixed-import-tables", no_argument, NULL,
211 OPTION_USE_NUL_PREFIXED_IMPORT_TABLES},
99ad8390
NC		 212#ifdef DLL_SUPPORT
213 /* getopt allows abbreviations, so we do this to stop it
214 from treating -o as an abbreviation for this option. */
215 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
216 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
217 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
218 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
219 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
e1c37eb5 220 {"exclude-modules-for-implib", required_argument, NULL, OPTION_EXCLUDE_MODULES_FOR_IMPLIB},
99ad8390
NC		 221 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
222 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
223 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
224 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
225 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
226 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
227 /* getopt() allows abbreviations, so we do this to stop it from
228 treating -c as an abbreviation for these --compat-implib. */
229 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
230 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
231 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
232 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
233 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
234 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
235 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
236 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
237 {"enable-extra-pep-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
238 {"enable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC},
239 {"disable-runtime-pseudo-reloc", no_argument, NULL, OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC},
6cb442d3
KT		 240 {"enable-runtime-pseudo-reloc-v1", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1},
241 {"enable-runtime-pseudo-reloc-v2", no_argument, NULL, OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2},
99ad8390
NC		 242#endif
243 {NULL, no_argument, NULL, 0}
244 };
245
246 *longopts = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
247 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
248}
249
250/* PE/WIN32; added routines to get the subsystem type, heap and/or stack
251 parameters which may be input from the command line. */
252
253typedef struct
254{
255 void *ptr;
256 int size;
0ead4f8d 257 bfd_vma value;
99ad8390
NC		 258 char *symbol;
259 int inited;
260} definfo;
261
262#define D(field,symbol,def) {&pep.field,sizeof(pep.field), def, symbol,0}
263
264static definfo init[] =
265{
266 /* imagebase must be first */
267#define IMAGEBASEOFF 0
268 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
269#define DLLOFF 1
270 {&dll, sizeof(dll), 0, "__dll__", 0},
271#define MSIMAGEBASEOFF 2
dffc6a64 272 D(ImageBase,"___ImageBase", NT_EXE_IMAGE_BASE),
99ad8390
NC		 273 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
274 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
275 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
276 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
277 D(MajorImageVersion,"__major_image_version__", 0),
278 D(MinorImageVersion,"__minor_image_version__", 0),
279 D(MajorSubsystemVersion,"__major_subsystem_version__", 5),
280 D(MinorSubsystemVersion,"__minor_subsystem_version__", 2),
281 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
282 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
283 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
284 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
285 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
286 D(LoaderFlags,"__loader_flags__", 0x0),
287 { NULL, 0, 0, NULL, 0 }
288};
289
290
291static void
292gld_${EMULATION_NAME}_list_options (FILE *file)
293{
294 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
295 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
296 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
297 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
298 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
299 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
300 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
301 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
302 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
303 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
304 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
305 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
306 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
307 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
308 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
309#ifdef DLL_SUPPORT
310 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
311 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
312 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
313 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
314 fprintf (file, _(" --exclude-libs lib,lib,... Exclude libraries from automatic export\n"));
e1c37eb5
DK		 315 fprintf (file, _(" --exclude-modules-for-implib mod,mod,...\n"));
316 fprintf (file, _(" Exclude objects, archive members from auto\n"));
317 fprintf (file, _(" export, place into import library instead.\n"));
99ad8390
NC		 318 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
319 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
320 fprintf (file, _(" --out-implib <file> Generate import library\n"));
321 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
322 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
323 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
324 create __imp_<SYMBOL> as well.\n"));
325 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
326 unless user specifies one\n"));
327 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
328 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without\n\
329 an importlib, use <string><basename>.dll\n\
330 in preference to lib<basename>.dll \n"));
331 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to\n\
332 __imp_sym for DATA references\n"));
333 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
334 fprintf (file, _(" --enable-runtime-pseudo-reloc Work around auto-import limitations by\n\
335 adding pseudo-relocations resolved at\n\
336 runtime.\n"));
337 fprintf (file, _(" --disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for\n\
338 auto-imported DATA.\n"));
339 fprintf (file, _(" --enable-extra-pep-debug Enable verbose debug output when building\n\
340 or linking to DLLs (esp. auto-import)\n"));
341#endif
342}
343
344
345static void
0ead4f8d 346set_pep_name (char *name, bfd_vma val)
99ad8390
NC		 347{
348 int i;
349
350 /* Find the name and set it. */
351 for (i = 0; init[i].ptr; i++)
352 {
353 if (strcmp (name, init[i].symbol) == 0)
354 {
355 init[i].value = val;
356 init[i].inited = 1;
357 if (strcmp (name,"__image_base__") == 0)
dffc6a64 358 set_pep_name ("___ImageBase", val);
99ad8390
NC		 359 return;
360 }
361 }
362 abort ();
363}
364
365
366static void
367set_pep_subsystem (void)
368{
369 const char *sver;
370 const char *entry;
371 const char *initial_symbol_char;
372 char *end;
373 int len;
374 int i;
375 int subsystem;
376 unsigned long temp_subsystem;
377 static const struct
378 {
379 const char *name;
380 const int value;
381 const char *entry;
382 }
383 v[] =
384 {
385 { "native", 1, "NtProcessStartup" },
386 { "windows", 2, "WinMainCRTStartup" },
387 { "console", 3, "mainCRTStartup" },
388 { "posix", 7, "__PosixProcessStartup"},
389 { "wince", 9, "_WinMainCRTStartup" },
390 { "xbox", 14, "mainCRTStartup" },
391 { NULL, 0, NULL }
392 };
393 /* Entry point name for arbitrary subsystem numbers. */
394 static const char default_entry[] = "mainCRTStartup";
395
396 /* Check for the presence of a version number. */
397 sver = strchr (optarg, ':');
398 if (sver == NULL)
399 len = strlen (optarg);
400 else
401 {
402 len = sver - optarg;
403 set_pep_name ("__major_subsystem_version__",
404 strtoul (sver + 1, &end, 0));
405 if (*end == '.')
406 set_pep_name ("__minor_subsystem_version__",
407 strtoul (end + 1, &end, 0));
408 if (*end != '\0')
409 einfo (_("%P: warning: bad version number in -subsystem option\n"));
410 }
411
412 /* Check for numeric subsystem. */
413 temp_subsystem = strtoul (optarg, & end, 0);
414 if ((*end == ':' || *end == '\0') && (temp_subsystem < 65536))
415 {
416 /* Search list for a numeric match to use its entry point. */
417 for (i = 0; v[i].name; i++)
418 if (v[i].value == (int) temp_subsystem)
419 break;
420
421 /* If no match, use the default. */
422 if (v[i].name != NULL)
423 entry = v[i].entry;
424 else
425 entry = default_entry;
426
427 /* Use this subsystem. */
428 subsystem = (int) temp_subsystem;
429 }
430 else
431 {
432 /* Search for subsystem by name. */
433 for (i = 0; v[i].name; i++)
434 if (strncmp (optarg, v[i].name, len) == 0
435 && v[i].name[len] == '\0')
436 break;
437
438 if (v[i].name == NULL)
439 {
440 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
441 return;
442 }
443
444 entry = v[i].entry;
445 subsystem = v[i].value;
446 }
447
448 set_pep_name ("__subsystem__", subsystem);
449
450 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
451 if (*initial_symbol_char != '\0')
452 {
453 char *alc_entry;
454
455 /* lang_default_entry expects its argument to be permanently
456 allocated, so we don't free this string. */
457 alc_entry = xmalloc (strlen (initial_symbol_char)
458 + strlen (entry)
459 + 1);
460 strcpy (alc_entry, initial_symbol_char);
461 strcat (alc_entry, entry);
462 entry = alc_entry;
463 }
464
465 lang_default_entry (entry);
466
467 return;
468}
469
470
471static void
472set_pep_value (char *name)
473{
474 char *end;
475
0ead4f8d 476 set_pep_name (name, (bfd_vma) strtoull (optarg, &end, 0));
99ad8390
NC		 477
478 if (end == optarg)
479 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
480
481 optarg = end;
482}
483
484
485static void
486set_pep_stack_heap (char *resname, char *comname)
487{
488 set_pep_value (resname);
489
490 if (*optarg == ',')
491 {
492 optarg++;
493 set_pep_value (comname);
494 }
495 else if (*optarg)
496 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
497}
498
499
500static bfd_boolean
501gld${EMULATION_NAME}_handle_option (int optc)
502{
503 switch (optc)
504 {
505 default:
506 return FALSE;
507
508 case OPTION_BASE_FILE:
509 link_info.base_file = fopen (optarg, FOPEN_WB);
510 if (link_info.base_file == NULL)
511 {
512 /* xgettext:c-format */
513 fprintf (stderr, _("%s: Can't open base file %s\n"),
514 program_name, optarg);
515 xexit (1);
516 }
517 break;
518
519 /* PE options. */
520 case OPTION_HEAP:
521 set_pep_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
522 break;
523 case OPTION_STACK:
524 set_pep_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
525 break;
526 case OPTION_SUBSYSTEM:
527 set_pep_subsystem ();
528 break;
529 case OPTION_MAJOR_OS_VERSION:
530 set_pep_value ("__major_os_version__");
531 break;
532 case OPTION_MINOR_OS_VERSION:
533 set_pep_value ("__minor_os_version__");
534 break;
535 case OPTION_MAJOR_SUBSYSTEM_VERSION:
536 set_pep_value ("__major_subsystem_version__");
537 break;
538 case OPTION_MINOR_SUBSYSTEM_VERSION:
539 set_pep_value ("__minor_subsystem_version__");
540 break;
541 case OPTION_MAJOR_IMAGE_VERSION:
542 set_pep_value ("__major_image_version__");
543 break;
544 case OPTION_MINOR_IMAGE_VERSION:
545 set_pep_value ("__minor_image_version__");
546 break;
547 case OPTION_FILE_ALIGNMENT:
548 set_pep_value ("__file_alignment__");
549 break;
550 case OPTION_SECTION_ALIGNMENT:
551 set_pep_value ("__section_alignment__");
552 break;
553 case OPTION_DLL:
554 set_pep_name ("__dll__", 1);
555 break;
556 case OPTION_IMAGE_BASE:
557 set_pep_value ("__image_base__");
558 break;
559 case OPTION_SUPPORT_OLD_CODE:
560 support_old_code = 1;
561 break;
ce11ba6c
KT		 562 case OPTION_USE_NUL_PREFIXED_IMPORT_TABLES:
563 pep_use_nul_prefixed_import_tables = TRUE;
564 break;
99ad8390
NC		 565#ifdef DLL_SUPPORT
566 case OPTION_OUT_DEF:
567 pep_out_def_filename = xstrdup (optarg);
568 break;
569 case OPTION_EXPORT_ALL:
570 pep_dll_export_everything = 1;
571 break;
572 case OPTION_EXCLUDE_SYMBOLS:
e1c37eb5 573 pep_dll_add_excludes (optarg, EXCLUDESYMS);
99ad8390
NC		 574 break;
575 case OPTION_EXCLUDE_LIBS:
e1c37eb5
DK		 576 pep_dll_add_excludes (optarg, EXCLUDELIBS);
577 break;
578 case OPTION_EXCLUDE_MODULES_FOR_IMPLIB:
579 pep_dll_add_excludes (optarg, EXCLUDEFORIMPLIB);
99ad8390
NC		 580 break;
581 case OPTION_KILL_ATS:
582 pep_dll_kill_ats = 1;
583 break;
584 case OPTION_STDCALL_ALIASES:
585 pep_dll_stdcall_aliases = 1;
586 break;
587 case OPTION_ENABLE_STDCALL_FIXUP:
588 pep_enable_stdcall_fixup = 1;
589 break;
590 case OPTION_DISABLE_STDCALL_FIXUP:
591 pep_enable_stdcall_fixup = 0;
592 break;
593 case OPTION_IMPLIB_FILENAME:
594 pep_implib_filename = xstrdup (optarg);
595 break;
596 case OPTION_WARN_DUPLICATE_EXPORTS:
597 pep_dll_warn_dup_exports = 1;
598 break;
599 case OPTION_IMP_COMPAT:
600 pep_dll_compat_implib = 1;
601 break;
602 case OPTION_ENABLE_AUTO_IMAGE_BASE:
603 pep_enable_auto_image_base = 1;
604 break;
605 case OPTION_DISABLE_AUTO_IMAGE_BASE:
606 pep_enable_auto_image_base = 0;
607 break;
608 case OPTION_DLL_SEARCH_PREFIX:
609 pep_dll_search_prefix = xstrdup (optarg);
610 break;
611 case OPTION_NO_DEFAULT_EXCLUDES:
612 pep_dll_do_default_excludes = 0;
613 break;
614 case OPTION_DLL_ENABLE_AUTO_IMPORT:
615 link_info.pei386_auto_import = 1;
616 break;
617 case OPTION_DLL_DISABLE_AUTO_IMPORT:
618 link_info.pei386_auto_import = 0;
619 break;
620 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC:
6cb442d3 621 link_info.pei386_runtime_pseudo_reloc = 2;
99ad8390
NC		 622 break;
623 case OPTION_DLL_DISABLE_RUNTIME_PSEUDO_RELOC:
624 link_info.pei386_runtime_pseudo_reloc = 0;
625 break;
6cb442d3
KT		 626 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V1:
627 link_info.pei386_runtime_pseudo_reloc = 1;
628 break;
629 case OPTION_DLL_ENABLE_RUNTIME_PSEUDO_RELOC_V2:
630 link_info.pei386_runtime_pseudo_reloc = 2;
631 break;
99ad8390
NC		 632 case OPTION_ENABLE_EXTRA_PE_DEBUG:
633 pep_dll_extra_pe_debug = 1;
634 break;
635#endif
636 }
637 return TRUE;
638}
639\f
640
641#ifdef DLL_SUPPORT
642static unsigned long
643strhash (const char *str)
644{
645 const unsigned char *s;
646 unsigned long hash;
647 unsigned int c;
648 unsigned int len;
649
650 hash = 0;
651 len = 0;
652 s = (const unsigned char *) str;
653 while ((c = *s++) != '\0')
654 {
655 hash += c + (c << 17);
656 hash ^= hash >> 2;
657 ++len;
658 }
659 hash += len + (len << 17);
660 hash ^= hash >> 2;
661
662 return hash;
663}
664
665/* Use the output file to create a image base for relocatable DLLs. */
666
0ead4f8d 667static bfd_vma
99ad8390
NC		 668compute_dll_image_base (const char *ofile)
669{
0ead4f8d 670 bfd_vma hash = (bfd_vma) strhash (ofile);
99ad8390
NC		 671 return 0x61300000 + ((hash << 16) & 0x0FFC0000);
672}
673#endif
674
675/* Assign values to the special symbols before the linker script is
676 read. */
677
678static void
679gld_${EMULATION_NAME}_set_symbols (void)
680{
681 /* Run through and invent symbols for all the
682 names and insert the defaults. */
683 int j;
684 lang_statement_list_type *save;
685
686 if (!init[IMAGEBASEOFF].inited)
687 {
688 if (link_info.relocatable)
689 init[IMAGEBASEOFF].value = 0;
690 else if (init[DLLOFF].value || (link_info.shared && !link_info.pie))
691#ifdef DLL_SUPPORT
692 init[IMAGEBASEOFF].value = (pep_enable_auto_image_base) ?
693 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
694#else
695 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
696#endif
697 else
698 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
699 init[MSIMAGEBASEOFF].value = init[IMAGEBASEOFF].value;
700 }
701
702 /* Don't do any symbol assignments if this is a relocatable link. */
703 if (link_info.relocatable)
704 return;
705
706 /* Glue the assignments into the abs section. */
707 save = stat_ptr;
708
709 stat_ptr = &(abs_output_section->children);
710
711 for (j = 0; init[j].ptr; j++)
712 {
0ead4f8d 713 bfd_vma val = init[j].value;
99ad8390
NC		 714 lang_assignment_statement_type *rv;
715 rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
716 exp_intop (val)));
717 if (init[j].size == sizeof (short))
0ead4f8d 718 *(short *) init[j].ptr = (short) val;
99ad8390 719 else if (init[j].size == sizeof (int))
0ead4f8d 720 *(int *) init[j].ptr = (int) val;
99ad8390 721 else if (init[j].size == sizeof (long))
0ead4f8d 722 *(long *) init[j].ptr = (long) val;
99ad8390
NC		 723 /* This might be a long long or other special type. */
724 else if (init[j].size == sizeof (bfd_vma))
725 *(bfd_vma *) init[j].ptr = val;
726 else abort ();
727 if (j == IMAGEBASEOFF)
728 image_base_statement = rv;
729 }
730 /* Restore the pointer. */
731 stat_ptr = save;
732
733 if (pep.FileAlignment > pep.SectionAlignment)
734 {
735 einfo (_("%P: warning, file alignment > section alignment.\n"));
736 }
737}
738
739/* This is called after the linker script and the command line options
740 have been read. */
741
742static void
743gld_${EMULATION_NAME}_after_parse (void)
744{
745 /* The Windows libraries are designed for the linker to treat the
746 entry point as an undefined symbol. Otherwise, the .obj that
747 defines mainCRTStartup is brought in because it is the first
748 encountered in libc.lib and it has other symbols in it which will
749 be pulled in by the link process. To avoid this, we act as
750 though the user specified -u with the entry point symbol.
751
752 This function is called after the linker script and command line
753 options have been read, so at this point we know the right entry
754 point. This function is called before the input files are
755 opened, so registering the symbol as undefined will make a
756 difference. */
757
758 if (! link_info.relocatable && entry_symbol.name != NULL)
759 ldlang_add_undef (entry_symbol.name);
760}
761
762/* pep-dll.c directly accesses pep_data_import_dll,
763 so it must be defined outside of #ifdef DLL_SUPPORT.
764 Note - this variable is deliberately not initialised.
765 This allows it to be treated as a common varaible, and only
766 exist in one incarnation in a multiple target enabled linker. */
767char * pep_data_import_dll;
768
769#ifdef DLL_SUPPORT
770static struct bfd_link_hash_entry *pep_undef_found_sym;
771
772static bfd_boolean
773pep_undef_cdecl_match (struct bfd_link_hash_entry *h, void *inf)
774{
775 int sl;
776 char *string = inf;
777
778 sl = strlen (string);
779 if (h->type == bfd_link_hash_defined
780 && strncmp (h->root.string, string, sl) == 0
781 && h->root.string[sl] == '@')
782 {
783 pep_undef_found_sym = h;
784 return FALSE;
785 }
786 return TRUE;
787}
788
789static void
790pep_fixup_stdcalls (void)
791{
792 static int gave_warning_message = 0;
793 struct bfd_link_hash_entry *undef, *sym;
794
795 if (pep_dll_extra_pe_debug)
796 printf ("%s\n", __FUNCTION__);
797
798 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
799 if (undef->type == bfd_link_hash_undefined)
800 {
801 char* at = strchr (undef->root.string, '@');
802 int lead_at = (*undef->root.string == '@');
803 /* For now, don't try to fixup fastcall symbols. */
804
805 if (at && !lead_at)
806 {
807 /* The symbol is a stdcall symbol, so let's look for a
808 cdecl symbol with the same name and resolve to that. */
809 char *cname = xstrdup (undef->root.string /* + lead_at */);
810 at = strchr (cname, '@');
811 *at = 0;
812 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
813
814 if (sym && sym->type == bfd_link_hash_defined)
815 {
816 undef->type = bfd_link_hash_defined;
817 undef->u.def.value = sym->u.def.value;
818 undef->u.def.section = sym->u.def.section;
819
820 if (pep_enable_stdcall_fixup == -1)
821 {
822 einfo (_("Warning: resolving %s by linking to %s\n"),
823 undef->root.string, cname);
824 if (! gave_warning_message)
825 {
826 gave_warning_message = 1;
827 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
828 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
829 }
830 }
831 }
832 }
833 else
834 {
835 /* The symbol is a cdecl symbol, so we look for stdcall
836 symbols - which means scanning the whole symbol table. */
837 pep_undef_found_sym = 0;
838 bfd_link_hash_traverse (link_info.hash, pep_undef_cdecl_match,
839 (char *) undef->root.string);
840 sym = pep_undef_found_sym;
841 if (sym)
842 {
843 undef->type = bfd_link_hash_defined;
844 undef->u.def.value = sym->u.def.value;
845 undef->u.def.section = sym->u.def.section;
846
847 if (pep_enable_stdcall_fixup == -1)
848 {
849 einfo (_("Warning: resolving %s by linking to %s\n"),
850 undef->root.string, sym->root.string);
851 if (! gave_warning_message)
852 {
853 gave_warning_message = 1;
854 einfo (_("Use --enable-stdcall-fixup to disable these warnings\n"));
855 einfo (_("Use --disable-stdcall-fixup to disable these fixups\n"));
856 }
857 }
858 }
859 }
860 }
861}
862
863static int
864make_import_fixup (arelent *rel, asection *s)
865{
866 struct bfd_symbol *sym = *rel->sym_ptr_ptr;
6cb442d3
KT		 867 char addend[8];
868 bfd_vma _addend = 0;
869 int suc = 0;
99ad8390
NC		 870
871 if (pep_dll_extra_pe_debug)
872 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
0af1713e 873 (unsigned long) rel->address, (long) rel->addend);
99ad8390 874
6cb442d3
KT		 875 memset (addend, 0, sizeof (addend));
876 switch ((rel->howto->bitsize))
877 {
878 case 8:
879 suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 1);
880 if (suc && rel->howto->pc_relative)
881 _addend = (bfd_vma) ((bfd_signed_vma) ((char) bfd_get_8 (s->owner, addend)));
882 else if (suc)
883 _addend = ((bfd_vma) bfd_get_8 (s->owner, addend)) & 0xff;
884 break;
885 case 16:
886 suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 2);
887 if (suc && rel->howto->pc_relative)
888 _addend = (bfd_vma) ((bfd_signed_vma) ((short) bfd_get_16 (s->owner, addend)));
889 else if (suc)
890 _addend = ((bfd_vma) bfd_get_16 (s->owner, addend)) & 0xffff;
891 break;
892 case 32:
893 suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 4);
894 if (suc && rel->howto->pc_relative)
895 _addend = (bfd_vma) ((bfd_signed_vma) ((int) bfd_get_32 (s->owner, addend)));
896 else if (suc)
897 _addend = ((bfd_vma) bfd_get_32 (s->owner, addend)) & 0xffffffff;
898 break;
899 case 64:
900 suc = bfd_get_section_contents (s->owner, s, addend, rel->address, 8);
901 if (suc)
902 _addend = ((bfd_vma) bfd_get_64 (s->owner, addend));
903 break;
904 }
905 if (! suc)
99ad8390
NC		 906 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
907 s->owner, s, rel->address);
908
6cb442d3
KT		 909 if (pep_dll_extra_pe_debug)
910 {
911 printf ("import of 0x%lx(0x%lx) sec_addr=0x%lx", (long) _addend, (long) rel->addend, (long) rel->address);
912 if (rel->howto->pc_relative) printf (" pcrel");
913 printf (" %d bit rel.\n",(int) rel->howto->bitsize);
914 }
915 pep_create_import_fixup (rel, s, _addend);
99ad8390
NC		 916
917 return 1;
918}
919
920static void
921pep_find_data_imports (void)
922{
923 struct bfd_link_hash_entry *undef, *sym;
924
925 if (link_info.pei386_auto_import == 0)
926 return;
927
928 for (undef = link_info.hash->undefs; undef; undef=undef->u.undef.next)
929 {
930 if (undef->type == bfd_link_hash_undefined)
931 {
932 /* C++ symbols are *long*. */
933 char buf[4096];
934
935 if (pep_dll_extra_pe_debug)
936 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
937
938 sprintf (buf, "__imp_%s", undef->root.string);
939
940 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
941
942 if (sym && sym->type == bfd_link_hash_defined)
943 {
944 bfd *b = sym->u.def.section->owner;
945 asymbol **symbols;
5c1d2f5f 946 int nsyms, i;
99ad8390
NC		 947
948 if (link_info.pei386_auto_import == -1)
8524166d
NC		 949 {
950 static bfd_boolean warned = FALSE;
951
952 info_msg (_("Info: resolving %s by linking to %s (auto-import)\n"),
953 undef->root.string, buf);
954
955 /* PR linker/4844. */
956 if (! warned)
957 {
958 warned = TRUE;
959 einfo (_("%P: warning: auto-importing has been activated without --enable-auto-import specified on the command line.\n\
44e36d8a 960This should work unless it involves constant data structures referencing symbols from auto-imported DLLs.\n"));
8524166d
NC		 961 }
962 }
99ad8390 963
5c1d2f5f
AM		 964 if (!bfd_generic_link_read_symbols (b))
965 {
966 einfo (_("%B%F: could not read symbols: %E\n"), b);
967 return;
968 }
969
970 symbols = bfd_get_outsymbols (b);
971 nsyms = bfd_get_symcount (b);
99ad8390
NC		 972
973 for (i = 0; i < nsyms; i++)
974 {
975 if (! CONST_STRNEQ (symbols[i]->name, "__head_"))
976 continue;
977
978 if (pep_dll_extra_pe_debug)
979 printf ("->%s\n", symbols[i]->name);
980
981 pep_data_import_dll = (char*) (symbols[i]->name +
982 sizeof ("__head_") - 1);
983 break;
984 }
985
986 pep_walk_relocs_of_symbol (&link_info, undef->root.string,
987 make_import_fixup);
988
989 /* Let's differentiate it somehow from defined. */
990 undef->type = bfd_link_hash_defweak;
991 /* We replace original name with __imp_ prefixed, this
992 1) may trash memory 2) leads to duplicate symbol generation.
993 Still, IMHO it's better than having name poluted. */
994 undef->root.string = sym->root.string;
995 undef->u.def.value = sym->u.def.value;
996 undef->u.def.section = sym->u.def.section;
997 }
998 }
999 }
1000}
1001
1002static bfd_boolean
1003pr_sym (struct bfd_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
1004{
1005 if (pep_dll_extra_pe_debug)
1006 printf ("+%s\n", h->string);
1007
1008 return TRUE;
1009}
1010#endif /* DLL_SUPPORT */
1011
1012
1013static void
1014gld_${EMULATION_NAME}_after_open (void)
1015{
1016#ifdef DLL_SUPPORT
1017 if (pep_dll_extra_pe_debug)
1018 {
1019 bfd *a;
1020 struct bfd_link_hash_entry *sym;
1021
1022 printf ("%s()\n", __FUNCTION__);
1023
1024 for (sym = link_info.hash->undefs; sym; sym=sym->u.undef.next)
1025 printf ("-%s\n", sym->root.string);
1026 bfd_hash_traverse (&link_info.hash->table, pr_sym, NULL);
1027
1028 for (a = link_info.input_bfds; a; a = a->link_next)
1029 printf ("*%s\n",a->filename);
1030 }
1031#endif
1032
1033 /* Pass the wacky PE command line options into the output bfd.
1034 FIXME: This should be done via a function, rather than by
1035 including an internal BFD header. */
1036
f13a99db
AM		 1037 if (coff_data (link_info.output_bfd) == NULL
1038 || coff_data (link_info.output_bfd)->pe == 0)
1039 einfo (_("%F%P: cannot perform PE operations on non PE output file '%B'.\n"),
1040 link_info.output_bfd);
99ad8390 1041
f13a99db
AM		 1042 pe_data (link_info.output_bfd)->pe_opthdr = pep;
1043 pe_data (link_info.output_bfd)->dll = init[DLLOFF].value;
1044 pe_data (link_info.output_bfd)->real_flags |= real_flags;
99ad8390
NC		 1045
1046#ifdef DLL_SUPPORT
1047 if (pep_enable_stdcall_fixup) /* -1=warn or 1=disable */
1048 pep_fixup_stdcalls ();
1049
f13a99db 1050 pep_process_import_defs (link_info.output_bfd, &link_info);
99ad8390
NC		 1051
1052 pep_find_data_imports ();
1053
1054#ifndef TARGET_IS_i386pep
1055 if (link_info.shared)
1056#else
1057 if (!link_info.relocatable)
1058#endif
f13a99db 1059 pep_dll_build_sections (link_info.output_bfd, &link_info);
99ad8390
NC		 1060
1061#ifndef TARGET_IS_i386pep
1062 else
f13a99db 1063 pep_exe_build_sections (link_info.output_bfd, &link_info);
99ad8390
NC		 1064#endif
1065#endif /* DLL_SUPPORT */
1066
1067 {
1068 /* This next chunk of code tries to detect the case where you have
1069 two import libraries for the same DLL (specifically,
1070 symbolically linking libm.a and libc.a in cygwin to
1071 libcygwin.a). In those cases, it's possible for function
1072 thunks from the second implib to be used but without the
1073 head/tail objects, causing an improper import table. We detect
1074 those cases and rename the "other" import libraries to match
1075 the one the head/tail come from, so that the linker will sort
1076 things nicely and produce a valid import table. */
1077
1078 LANG_FOR_EACH_INPUT_STATEMENT (is)
1079 {
1080 if (is->the_bfd->my_archive)
1081 {
1082 int idata2 = 0, reloc_count=0, is_imp = 0;
1083 asection *sec;
1084
1085 /* See if this is an import library thunk. */
1086 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1087 {
1088 if (strcmp (sec->name, ".idata\$2") == 0)
1089 idata2 = 1;
1090 if (CONST_STRNEQ (sec->name, ".idata\$"))
1091 is_imp = 1;
1092 reloc_count += sec->reloc_count;
1093 }
1094
1095 if (is_imp && !idata2 && reloc_count)
1096 {
1097 /* It is, look for the reference to head and see if it's
1098 from our own library. */
1099 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1100 {
1101 int i;
99ad8390
NC		 1102 long relsize;
1103 asymbol **symbols;
1104 arelent **relocs;
1105 int nrelocs;
1106
99ad8390
NC		 1107 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1108 if (relsize < 1)
1109 break;
1110
5c1d2f5f 1111 if (!bfd_generic_link_read_symbols (is->the_bfd))
99ad8390 1112 {
5c1d2f5f
AM		 1113 einfo (_("%B%F: could not read symbols: %E\n"),
1114 is->the_bfd);
99ad8390
NC		 1115 return;
1116 }
5c1d2f5f 1117 symbols = bfd_get_outsymbols (is->the_bfd);
99ad8390
NC		 1118
1119 relocs = xmalloc ((size_t) relsize);
1120 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1121 relocs, symbols);
1122 if (nrelocs < 0)
1123 {
1124 free (relocs);
44e36d8a 1125 einfo ("%X%P: unable to process relocs: %E\n");
99ad8390
NC		 1126 return;
1127 }
1128
1129 for (i = 0; i < nrelocs; i++)
1130 {
1131 struct bfd_symbol *s;
1132 struct bfd_link_hash_entry * blhe;
1133 char *other_bfd_filename;
1134 char *n;
1135
1136 s = (relocs[i]->sym_ptr_ptr)[0];
1137
1138 if (s->flags & BSF_LOCAL)
1139 continue;
1140
1141 /* Thunk section with reloc to another bfd. */
1142 blhe = bfd_link_hash_lookup (link_info.hash,
1143 s->name,
1144 FALSE, FALSE, TRUE);
1145
1146 if (blhe == NULL
1147 || blhe->type != bfd_link_hash_defined)
1148 continue;
1149
1150 other_bfd_filename
1151 = blhe->u.def.section->owner->my_archive
1152 ? bfd_get_filename (blhe->u.def.section->owner->my_archive)
1153 : bfd_get_filename (blhe->u.def.section->owner);
1154
1155 if (strcmp (bfd_get_filename (is->the_bfd->my_archive),
1156 other_bfd_filename) == 0)
1157 continue;
1158
1159 /* Rename this implib to match the other one. */
1160 n = xmalloc (strlen (other_bfd_filename) + 1);
1161 strcpy (n, other_bfd_filename);
1162 is->the_bfd->my_archive->filename = n;
1163 }
1164
1165 free (relocs);
1166 /* Note - we do not free the symbols,
1167 they are now cached in the BFD. */
1168 }
1169 }
1170 }
1171 }
1172 }
1173
1174 {
1175 int is_ms_arch = 0;
1176 bfd *cur_arch = 0;
1177 lang_input_statement_type *is2;
1178 lang_input_statement_type *is3;
1179
1180 /* Careful - this is a shell script. Watch those dollar signs! */
1181 /* Microsoft import libraries have every member named the same,
1182 and not in the right order for us to link them correctly. We
1183 must detect these and rename the members so that they'll link
1184 correctly. There are three types of objects: the head, the
1185 thunks, and the sentinel(s). The head is easy; it's the one
1186 with idata2. We assume that the sentinels won't have relocs,
1187 and the thunks will. It's easier than checking the symbol
1188 table for external references. */
1189 LANG_FOR_EACH_INPUT_STATEMENT (is)
1190 {
1191 if (is->the_bfd->my_archive)
1192 {
1193 char *pnt;
1194 bfd *arch = is->the_bfd->my_archive;
1195
1196 if (cur_arch != arch)
1197 {
1198 cur_arch = arch;
1199 is_ms_arch = 1;
1200
1201 for (is3 = is;
1202 is3 && is3->the_bfd->my_archive == arch;
1203 is3 = (lang_input_statement_type *) is3->next)
1204 {
1205 /* A MS dynamic import library can also contain static
1206 members, so look for the first element with a .dll
1207 extension, and use that for the remainder of the
1208 comparisons. */
1209 pnt = strrchr (is3->the_bfd->filename, '.');
1210 if (pnt != NULL && strcmp (pnt, ".dll") == 0)
1211 break;
1212 }
1213
1214 if (is3 == NULL)
1215 is_ms_arch = 0;
1216 else
1217 {
1218 /* OK, found one. Now look to see if the remaining
1219 (dynamic import) members use the same name. */
1220 for (is2 = is;
1221 is2 && is2->the_bfd->my_archive == arch;
1222 is2 = (lang_input_statement_type *) is2->next)
1223 {
1224 /* Skip static members, ie anything with a .obj
1225 extension. */
1226 pnt = strrchr (is2->the_bfd->filename, '.');
1227 if (pnt != NULL && strcmp (pnt, ".obj") == 0)
1228 continue;
1229
1230 if (strcmp (is3->the_bfd->filename,
1231 is2->the_bfd->filename))
1232 {
1233 is_ms_arch = 0;
1234 break;
1235 }
1236 }
1237 }
1238 }
1239
1240 /* This fragment might have come from an .obj file in a Microsoft
1241 import, and not an actual import record. If this is the case,
1242 then leave the filename alone. */
1243 pnt = strrchr (is->the_bfd->filename, '.');
1244
1245 if (is_ms_arch && (strcmp (pnt, ".dll") == 0))
1246 {
1247 int idata2 = 0, reloc_count=0;
1248 asection *sec;
1249 char *new_name, seq;
1250
1251 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1252 {
1253 if (strcmp (sec->name, ".idata\$2") == 0)
1254 idata2 = 1;
1255 reloc_count += sec->reloc_count;
1256 }
1257
1258 if (idata2) /* .idata2 is the TOC */
1259 seq = 'a';
1260 else if (reloc_count > 0) /* thunks */
1261 seq = 'b';
1262 else /* sentinel */
1263 seq = 'c';
1264
1265 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1266 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1267 is->the_bfd->filename = new_name;
1268
1269 new_name = xmalloc (strlen (is->filename) + 3);
1270 sprintf (new_name, "%s.%c", is->filename, seq);
1271 is->filename = new_name;
1272 }
1273 }
1274 }
1275 }
1276}
1277\f
1278static void
1279gld_${EMULATION_NAME}_before_allocation (void)
1280{
1281 before_allocation_default ();
1282}
1283\f
1284#ifdef DLL_SUPPORT
1285/* This is called when an input file isn't recognized as a BFD. We
1286 check here for .DEF files and pull them in automatically. */
1287
1288static int
1289saw_option (char *option)
1290{
1291 int i;
1292
1293 for (i = 0; init[i].ptr; i++)
1294 if (strcmp (init[i].symbol, option) == 0)
1295 return init[i].inited;
1296 return 0;
1297}
1298#endif /* DLL_SUPPORT */
1299
1300static bfd_boolean
1301gld_${EMULATION_NAME}_unrecognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1302{
1303#ifdef DLL_SUPPORT
1304 const char *ext = entry->filename + strlen (entry->filename) - 4;
1305
1306 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1307 {
1308 pep_def_file = def_file_parse (entry->filename, pep_def_file);
1309
1310 if (pep_def_file)
1311 {
1312 int i, buflen=0, len;
1313 char *buf;
1314
1315 for (i = 0; i < pep_def_file->num_exports; i++)
1316 {
1317 len = strlen (pep_def_file->exports[i].internal_name);
1318 if (buflen < len + 2)
1319 buflen = len + 2;
1320 }
1321
1322 buf = xmalloc (buflen);
1323
1324 for (i = 0; i < pep_def_file->num_exports; i++)
1325 {
1326 struct bfd_link_hash_entry *h;
1327
1328 sprintf (buf, "_%s", pep_def_file->exports[i].internal_name);
1329
1330 h = bfd_link_hash_lookup (link_info.hash, buf, TRUE, TRUE, TRUE);
1331 if (h == (struct bfd_link_hash_entry *) NULL)
1332 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1333 if (h->type == bfd_link_hash_new)
1334 {
1335 h->type = bfd_link_hash_undefined;
1336 h->u.undef.abfd = NULL;
1337 bfd_link_add_undef (link_info.hash, h);
1338 }
1339 }
1340 free (buf);
1341
1342 /* def_file_print (stdout, pep_def_file); */
1343 if (pep_def_file->is_dll == 1)
1344 link_info.shared = 1;
1345
1346 if (pep_def_file->base_address != (bfd_vma)(-1))
1347 {
f13a99db
AM		 1348 pep.ImageBase
1349 = pe_data (link_info.output_bfd)->pe_opthdr.ImageBase
1350 = init[IMAGEBASEOFF].value
1351 = pep_def_file->base_address;
99ad8390
NC		 1352 init[IMAGEBASEOFF].inited = 1;
1353 if (image_base_statement)
f13a99db
AM		 1354 image_base_statement->exp = exp_assop ('=', "__image_base__",
1355 exp_intop (pep.ImageBase));
99ad8390
NC		 1356 }
1357
1358 if (pep_def_file->stack_reserve != -1
1359 && ! saw_option ("__size_of_stack_reserve__"))
1360 {
1361 pep.SizeOfStackReserve = pep_def_file->stack_reserve;
1362 if (pep_def_file->stack_commit != -1)
1363 pep.SizeOfStackCommit = pep_def_file->stack_commit;
1364 }
1365 if (pep_def_file->heap_reserve != -1
1366 && ! saw_option ("__size_of_heap_reserve__"))
1367 {
1368 pep.SizeOfHeapReserve = pep_def_file->heap_reserve;
1369 if (pep_def_file->heap_commit != -1)
1370 pep.SizeOfHeapCommit = pep_def_file->heap_commit;
1371 }
1372 return TRUE;
1373 }
1374 }
1375#endif
1376 return FALSE;
1377}
1378
1379static bfd_boolean
1380gld_${EMULATION_NAME}_recognized_file (lang_input_statement_type *entry ATTRIBUTE_UNUSED)
1381{
1382#ifdef DLL_SUPPORT
1383#ifdef TARGET_IS_i386pep
1384 pep_dll_id_target ("pei-x86-64");
1385#endif
880383ca
NC		 1386 if (pep_bfd_is_dll (entry->the_bfd))
1387 return pep_implied_import_dll (entry->filename);
99ad8390
NC		 1388#endif
1389 return FALSE;
1390}
1391
1392static void
1393gld_${EMULATION_NAME}_finish (void)
1394{
1395 finish_default ();
1396
1397#ifdef DLL_SUPPORT
1398 if (link_info.shared
1399 || (!link_info.relocatable && pep_def_file->num_exports != 0))
1400 {
f13a99db 1401 pep_dll_fill_sections (link_info.output_bfd, &link_info);
99ad8390 1402 if (pep_implib_filename)
e1c37eb5 1403 pep_dll_generate_implib (pep_def_file, pep_implib_filename, &link_info);
99ad8390
NC		 1404 }
1405
1406 if (pep_out_def_filename)
1407 pep_dll_generate_def_file (pep_out_def_filename);
1408#endif /* DLL_SUPPORT */
1409
1410 /* I don't know where .idata gets set as code, but it shouldn't be. */
1411 {
f13a99db 1412 asection *asec = bfd_get_section_by_name (link_info.output_bfd, ".idata");
99ad8390
NC		 1413
1414 if (asec)
1415 {
1416 asec->flags &= ~SEC_CODE;
1417 asec->flags |= SEC_DATA;
1418 }
1419 }
1420}
1421
1422\f
1423/* Place an orphan section.
1424
1425 We use this to put sections in a reasonable place in the file, and
1426 to ensure that they are aligned as required.
1427
d34c1c51 1428 We handle grouped sections here as well. A section named .foo\$nn
99ad8390
NC		 1429 goes into the output section .foo. All grouped sections are sorted
1430 by name.
1431
1432 Grouped sections for the default sections are handled by the
1433 default linker script using wildcards, and are sorted by
1434 sort_sections. */
1435
c2edb4b8 1436static lang_output_section_statement_type *
8a99a385
AM		 1437gld_${EMULATION_NAME}_place_orphan (asection *s,
1438 const char *secname,
1439 int constraint)
99ad8390 1440{
bcacc0f5 1441 const char *orig_secname = secname;
99ad8390
NC		 1442 char *dollar = NULL;
1443 lang_output_section_statement_type *os;
1444 lang_statement_list_type add_child;
1445
99ad8390 1446 /* Look through the script to see where to place this section. */
99ad8390 1447 if (!link_info.relocatable
d34c1c51 1448 && (dollar = strchr (secname, '\$')) != NULL)
99ad8390 1449 {
bcacc0f5 1450 size_t len = dollar - secname;
99ad8390 1451 char *newname = xmalloc (len + 1);
bcacc0f5 1452 memcpy (newname, secname, len);
99ad8390
NC		 1453 newname[len] = '\0';
1454 secname = newname;
1455 }
1456
99ad8390
NC		 1457 lang_list_init (&add_child);
1458
8a99a385
AM		 1459 if (constraint == 0
1460 && (os = lang_output_section_find (secname)) != NULL
bcacc0f5
AM		 1461 && os->bfd_section != NULL
1462 && (os->bfd_section->flags == 0
99ad8390
NC		 1463 || ((s->flags ^ os->bfd_section->flags)
1464 & (SEC_LOAD | SEC_ALLOC)) == 0))
1465 {
1466 /* We already have an output section statement with this
bcacc0f5 1467 name, and its bfd section has compatible flags.
99ad8390
NC		 1468 If the section already exists but does not have any flags set,
1469 then it has been created by the linker, probably as a result of
1470 a --section-start command line switch. */
1471 lang_add_section (&add_child, s, os);
1472 }
1473 else
1474 {
1475 static struct orphan_save hold[] =
1476 {
1477 { ".text",
1478 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1479 0, 0, 0, 0 },
1480 { ".rdata",
1481 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1482 0, 0, 0, 0 },
1483 { ".data",
1484 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1485 0, 0, 0, 0 },
1486 { ".bss",
1487 SEC_ALLOC,
1488 0, 0, 0, 0 }
1489 };
1490 enum orphan_save_index
1491 {
1492 orphan_text = 0,
1493 orphan_rodata,
1494 orphan_data,
1495 orphan_bss
1496 };
1497 static int orphan_init_done = 0;
1498 struct orphan_save *place;
1499 lang_output_section_statement_type *after;
1500 etree_type *address;
1501
1502 if (!orphan_init_done)
1503 {
1504 struct orphan_save *ho;
1505 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1506 if (ho->name != NULL)
1507 {
1508 ho->os = lang_output_section_find (ho->name);
1509 if (ho->os != NULL && ho->os->flags == 0)
1510 ho->os->flags = ho->flags;
1511 }
1512 orphan_init_done = 1;
1513 }
1514
1515 /* Try to put the new output section in a reasonable place based
1516 on the section name and section flags. */
1517
1518 place = NULL;
1519 if ((s->flags & SEC_ALLOC) == 0)
1520 ;
1521 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1522 place = &hold[orphan_bss];
1523 else if ((s->flags & SEC_READONLY) == 0)
1524 place = &hold[orphan_data];
1525 else if ((s->flags & SEC_CODE) == 0)
1526 place = &hold[orphan_rodata];
1527 else
1528 place = &hold[orphan_text];
1529
1530 after = NULL;
1531 if (place != NULL)
1532 {
1533 if (place->os == NULL)
1534 place->os = lang_output_section_find (place->name);
1535 after = place->os;
1536 if (after == NULL)
1537 after = lang_output_section_find_by_flags (s, &place->os, NULL);
1538 if (after == NULL)
1539 /* *ABS* is always the first output section statement. */
1540 after = (&lang_output_section_statement.head
1541 ->output_section_statement);
1542 }
1543
99ad8390
NC		 1544 /* All sections in an executable must be aligned to a page boundary. */
1545 address = exp_unop (ALIGN_K, exp_nameop (NAME, "__section_alignment__"));
8a99a385
AM		 1546 os = lang_insert_orphan (s, secname, constraint, after, place, address,
1547 &add_child);
99ad8390
NC		 1548 }
1549
1550 {
1551 lang_statement_union_type **pl = &os->children.head;
1552
1553 if (dollar != NULL)
1554 {
1555 bfd_boolean found_dollar;
1556
d34c1c51 1557 /* The section name has a '\$'. Sort it with the other '\$'
99ad8390
NC		 1558 sections. */
1559 found_dollar = FALSE;
1560 for ( ; *pl != NULL; pl = &(*pl)->header.next)
1561 {
1562 lang_input_section_type *ls;
1563 const char *lname;
1564
1565 if ((*pl)->header.type != lang_input_section_enum)
1566 continue;
1567
1568 ls = &(*pl)->input_section;
1569
1570 lname = bfd_get_section_name (ls->section->owner, ls->section);
d34c1c51 1571 if (strchr (lname, '\$') == NULL)
99ad8390
NC		 1572 {
1573 if (found_dollar)
1574 break;
1575 }
1576 else
1577 {
1578 found_dollar = TRUE;
1579 if (strcmp (orig_secname, lname) < 0)
1580 break;
1581 }
1582 }
1583 }
1584
1585 if (add_child.head != NULL)
1586 {
1587 add_child.head->header.next = *pl;
1588 *pl = add_child.head;
1589 }
1590 }
1591
c2edb4b8 1592 return os;
99ad8390
NC		 1593}
1594
1595static bfd_boolean
1596gld_${EMULATION_NAME}_open_dynamic_archive
1597 (const char *arch ATTRIBUTE_UNUSED,
1598 search_dirs_type *search,
1599 lang_input_statement_type *entry)
1600{
1601 static const struct
1602 {
1603 const char * format;
1604 bfd_boolean use_prefix;
1605 }
1606 libname_fmt [] =
1607 {
1608 /* Preferred explicit import library for dll's. */
1609 { "lib%s.dll.a", FALSE },
1610 /* Alternate explicit import library for dll's. */
1611 { "%s.dll.a", FALSE },
1612 /* "libfoo.a" could be either an import lib or a static lib.
1613 For backwards compatibility, libfoo.a needs to precede
1614 libfoo.dll and foo.dll in the search. */
1615 { "lib%s.a", FALSE },
92b93329 1616 /* The 'native' spelling of an import lib name is "foo.lib". */
99ad8390
NC		 1617 { "%s.lib", FALSE },
1618#ifdef DLL_SUPPORT
1619 /* Try "<prefix>foo.dll" (preferred dll name, if specified). */
1620 { "%s%s.dll", TRUE },
1621#endif
1622 /* Try "libfoo.dll" (default preferred dll name). */
1623 { "lib%s.dll", FALSE },
1624 /* Finally try 'native' dll name "foo.dll". */
1625 { "%s.dll", FALSE },
1626 /* Note: If adding more formats to this table, make sure to check to
1627 see if their length is longer than libname_fmt[0].format, and if
1628 so, update the call to xmalloc() below. */
1629 { NULL, FALSE }
1630 };
1631 static unsigned int format_max_len = 0;
1632 const char * filename;
1633 char * full_string;
1634 char * base_string;
1635 unsigned int i;
1636
1637
1638 if (! entry->is_archive)
1639 return FALSE;
1640
1641 filename = entry->filename;
1642
1643 if (format_max_len == 0)
1644 /* We need to allow space in the memory that we are going to allocate
1645 for the characters in the format string. Since the format array is
1646 static we only need to calculate this information once. In theory
1647 this value could also be computed statically, but this introduces
1648 the possibility for a discrepancy and hence a possible memory
1649 corruption. The lengths we compute here will be too long because
1650 they will include any formating characters (%s) in the strings, but
1651 this will not matter. */
1652 for (i = 0; libname_fmt[i].format; i++)
1653 if (format_max_len < strlen (libname_fmt[i].format))
1654 format_max_len = strlen (libname_fmt[i].format);
1655
1656 full_string = xmalloc (strlen (search->name)
1657 + strlen (filename)
1658 + format_max_len
1659#ifdef DLL_SUPPORT
1660 + (pep_dll_search_prefix
1661 ? strlen (pep_dll_search_prefix) : 0)
1662#endif
1663 /* Allow for the terminating NUL and for the path
1664 separator character that is inserted between
1665 search->name and the start of the format string. */
1666 + 2);
1667
1668 sprintf (full_string, "%s/", search->name);
1669 base_string = full_string + strlen (full_string);
1670
1671 for (i = 0; libname_fmt[i].format; i++)
1672 {
92b93329 1673#ifdef DLL_SUPPORT
99ad8390
NC		 1674 if (libname_fmt[i].use_prefix)
1675 {
1676 if (!pep_dll_search_prefix)
1677 continue;
1678 sprintf (base_string, libname_fmt[i].format, pep_dll_search_prefix, filename);
1679 }
1680 else
1681#endif
1682 sprintf (base_string, libname_fmt[i].format, filename);
1683
1684 if (ldfile_try_open_bfd (full_string, entry))
1685 break;
1686 }
1687
1688 if (!libname_fmt[i].format)
1689 {
1690 free (full_string);
1691 return FALSE;
1692 }
1693
1694 entry->filename = full_string;
1695
1696 return TRUE;
1697}
1698
1699static int
1700gld_${EMULATION_NAME}_find_potential_libraries
1701 (char *name, lang_input_statement_type *entry)
1702{
1703 return ldfile_open_file_search (name, entry, "", ".lib");
1704}
1705\f
1706static char *
1707gld_${EMULATION_NAME}_get_script (int *isfile)
1708EOF
1709# Scripts compiled in.
1710# sed commands to quote an ld script as a C string.
1711sc="-f stringify.sed"
1712
92b93329 1713fragment <<EOF
99ad8390
NC		 1714{
1715 *isfile = 0;
1716
1717 if (link_info.relocatable && config.build_constructors)
1718 return
1719EOF
1720sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1721echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1722sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1723echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1724sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1725echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1726sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
e2a83dd0
NC		 1727if test -n "$GENERATE_AUTO_IMPORT_SCRIPT" ; then
1728echo ' ; else if (link_info.pei386_auto_import == 1) return' >> e${EMULATION_NAME}.c
1729sed $sc ldscripts/${EMULATION_NAME}.xa >> e${EMULATION_NAME}.c
1730fi
99ad8390
NC		 1731echo ' ; else return' >> e${EMULATION_NAME}.c
1732sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1733echo '; }' >> e${EMULATION_NAME}.c
1734
92b93329 1735fragment <<EOF
99ad8390
NC		 1736
1737
1738struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1739{
1740 gld_${EMULATION_NAME}_before_parse,
1741 syslib_default,
1742 hll_default,
1743 gld_${EMULATION_NAME}_after_parse,
1744 gld_${EMULATION_NAME}_after_open,
1745 after_allocation_default,
1746 set_output_arch_default,
1747 ldemul_default_target,
1748 gld_${EMULATION_NAME}_before_allocation,
1749 gld_${EMULATION_NAME}_get_script,
1750 "${EMULATION_NAME}",
1751 "${OUTPUT_FORMAT}",
1752 gld_${EMULATION_NAME}_finish,
1753 NULL, /* Create output section statements. */
1754 gld_${EMULATION_NAME}_open_dynamic_archive,
1755 gld_${EMULATION_NAME}_place_orphan,
1756 gld_${EMULATION_NAME}_set_symbols,
1757 NULL, /* parse_args */
1758 gld${EMULATION_NAME}_add_options,
1759 gld${EMULATION_NAME}_handle_option,
1760 gld_${EMULATION_NAME}_unrecognized_file,
1761 gld_${EMULATION_NAME}_list_options,
1762 gld_${EMULATION_NAME}_recognized_file,
1763 gld_${EMULATION_NAME}_find_potential_libraries,
1764 NULL /* new_vers_pattern. */
1765};
1766EOF
GDB Binutils - Deliverables
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