1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 if [ -z "$MACHINE" ]; then
6 OUTPUT_ARCH=${ARCH}:${MACHINE}
8 rm -f e${EMULATION_NAME}.c
9 (echo;echo;echo;echo;echo)>e${EMULATION_NAME}.c # there, now line numbers match ;-)
10 cat >>e${EMULATION_NAME}.c <<EOF
11 /* This file is part of GLD, the Gnu Linker.
12 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001
13 Free Software Foundation, Inc.
15 This program is free software; you can redistribute it and/or modify
16 it under the terms of the GNU General Public License as published by
17 the Free Software Foundation; either version 2 of the License, or
18 (at your option) any later version.
20 This program is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
25 You should have received a copy of the GNU General Public License
26 along with this program; if not, write to the Free Software
27 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
30 /* The original file generated returned different default scripts depending
31 on whether certain switches were set, but these switches pertain to the
32 Linux system and that particular version of coff. In the NT case, we
33 only determine if the subsystem is console or windows in order to select
34 the correct entry point by default. */
40 #include "libiberty.h"
51 #include "coff/internal.h"
53 /* FIXME: This is a BFD internal header file, and we should not be
55 #include "../bfd/libcoff.h"
62 #define TARGET_IS_${EMULATION_NAME}
64 /* Permit the emulation parameters to override the default section
65 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
66 it seem that include/coff/internal.h should not define
67 PE_DEF_SECTION_ALIGNMENT. */
68 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
69 #undef PE_DEF_SECTION_ALIGNMENT
70 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
73 #if defined(TARGET_IS_i386pe)
76 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe) || defined(TARGET_IS_armpe)
80 #if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
81 #define PE_DEF_SUBSYSTEM 3
83 #undef NT_EXE_IMAGE_BASE
84 #undef PE_DEF_SECTION_ALIGNMENT
85 #undef PE_DEF_FILE_ALIGNMENT
86 #define NT_EXE_IMAGE_BASE 0x00010000
87 #ifdef TARGET_IS_armpe
88 #define PE_DEF_SECTION_ALIGNMENT 0x00001000
89 #define PE_DEF_SUBSYSTEM 9
91 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
92 #define PE_DEF_SUBSYSTEM 2
94 #define PE_DEF_FILE_ALIGNMENT 0x00000200
97 #ifdef TARGET_IS_arm_epoc_pe
98 #define bfd_arm_pe_allocate_interworking_sections \
99 bfd_arm_epoc_pe_allocate_interworking_sections
100 #define bfd_arm_pe_get_bfd_for_interworking \
101 bfd_arm_epoc_pe_get_bfd_for_interworking
102 #define bfd_arm_pe_process_before_allocation \
103 bfd_arm_epoc_pe_process_before_allocation
106 static void gld_${EMULATION_NAME}_set_symbols PARAMS ((void));
107 static void gld_${EMULATION_NAME}_after_open PARAMS ((void));
108 static void gld_${EMULATION_NAME}_before_parse PARAMS ((void));
109 static void gld_${EMULATION_NAME}_after_parse PARAMS ((void));
110 static void gld_${EMULATION_NAME}_before_allocation PARAMS ((void));
111 static asection *output_prev_sec_find
112 PARAMS ((lang_output_section_statement_type *));
113 static boolean gld_${EMULATION_NAME}_place_orphan
114 PARAMS ((lang_input_statement_type *, asection *));
115 static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *));
116 static int gld_${EMULATION_NAME}_parse_args PARAMS ((int, char **));
117 static void gld_${EMULATION_NAME}_finish PARAMS ((void));
118 static boolean gld_${EMULATION_NAME}_open_dynamic_archive
119 PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
120 static void gld_${EMULATION_NAME}_list_options PARAMS ((FILE *));
121 static void set_pe_name PARAMS ((char *, long));
122 static void set_pe_subsystem PARAMS ((void));
123 static void set_pe_value PARAMS ((char *));
124 static void set_pe_stack_heap PARAMS ((char *, char *));
127 static boolean pe_undef_cdecl_match
128 PARAMS ((struct bfd_link_hash_entry *, PTR));
129 static void pe_fixup_stdcalls PARAMS ((void));
130 static int make_import_fixup PARAMS ((arelent *));
131 static void pe_find_data_imports PARAMS ((void));
134 static boolean pr_sym PARAMS ((struct bfd_hash_entry *, PTR string));
135 static boolean gld_${EMULATION_NAME}_unrecognized_file
136 PARAMS ((lang_input_statement_type *));
137 static boolean gld_${EMULATION_NAME}_recognized_file
138 PARAMS ((lang_input_statement_type *));
139 static int gld_${EMULATION_NAME}_find_potential_libraries
140 PARAMS ((char *, lang_input_statement_type *));
143 static struct internal_extra_pe_aouthdr pe;
145 static int support_old_code = 0;
146 static char * thumb_entry_symbol = NULL;
147 static lang_assignment_statement_type *image_base_statement = 0;
150 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable */
151 static char *pe_out_def_filename = NULL;
152 static char *pe_implib_filename = NULL;
153 static int pe_enable_auto_image_base = 0;
154 static char *pe_dll_search_prefix = NULL;
157 extern const char *output_filename;
160 gld_${EMULATION_NAME}_before_parse()
162 const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}");
165 ldfile_output_architecture = arch->arch;
166 ldfile_output_machine = arch->mach;
167 ldfile_output_machine_name = arch->printable_name;
170 ldfile_output_architecture = bfd_arch_${ARCH};
171 output_filename = "${EXECUTABLE_NAME:-a.exe}";
173 config.dynamic_link = true;
174 config.has_shared = 1;
175 /* link_info.pei386_auto_import = true; */
177 #if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
178 #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe
179 lang_add_entry ("WinMainCRTStartup", 1);
181 lang_add_entry ("_WinMainCRTStartup", 1);
187 /* PE format extra command line options. */
189 /* Used for setting flags in the PE header. */
190 #define OPTION_BASE_FILE (300 + 1)
191 #define OPTION_DLL (OPTION_BASE_FILE + 1)
192 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
193 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
194 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
195 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
196 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
197 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
198 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
199 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
200 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
201 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
202 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
203 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
204 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
205 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
206 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
207 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
208 #define OPTION_KILL_ATS (OPTION_EXCLUDE_SYMBOLS + 1)
209 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
210 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
211 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
212 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
213 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
214 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
215 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
216 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
217 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
218 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
219 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
220 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
221 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
222 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
224 static struct option longopts[] = {
226 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
227 {"dll", no_argument, NULL, OPTION_DLL},
228 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
229 {"heap", required_argument, NULL, OPTION_HEAP},
230 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
231 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
232 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
233 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
234 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
235 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
236 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
237 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
238 {"stack", required_argument, NULL, OPTION_STACK},
239 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
240 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
241 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
243 /* getopt allows abbreviations, so we do this to stop it from treating -o
244 as an abbreviation for this option */
245 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
246 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
247 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
248 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
249 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
250 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
251 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
252 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
253 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
254 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
255 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
256 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
257 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
258 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
259 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
260 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
261 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
262 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
264 {NULL, no_argument, NULL, 0}
268 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
269 parameters which may be input from the command line */
280 #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
282 static definfo init[] =
284 /* imagebase must be first */
285 #define IMAGEBASEOFF 0
286 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
288 {&dll, sizeof(dll), 0, "__dll__", 0},
289 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
290 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
291 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
292 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
293 D(MajorImageVersion,"__major_image_version__", 1),
294 D(MinorImageVersion,"__minor_image_version__", 0),
295 #ifdef TARGET_IS_armpe
296 D(MajorSubsystemVersion,"__major_subsystem_version__", 2),
298 D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
300 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
301 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
302 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
303 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
304 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
305 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
306 D(LoaderFlags,"__loader_flags__", 0x0),
307 { NULL, 0, 0, NULL, 0 }
311 gld_${EMULATION_NAME}_list_options (file)
314 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
315 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
316 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
317 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
318 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
319 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
320 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
321 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
322 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
323 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
324 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
325 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
326 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
327 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
328 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
329 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
331 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
332 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
333 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
334 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
335 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
336 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
337 fprintf (file, _(" --out-implib <file> Generate import library\n"));
338 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
339 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
340 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n"));
341 fprintf (file, _(" create __imp_<SYMBOL> as well.\n"));
342 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n"));
343 fprintf (file, _(" unless user specifies one\n"));
344 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
345 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll witout an\n"));
346 fprintf (file, _(" importlib, use <string><basename>.dll \n"));
347 fprintf (file, _(" in preference to lib<basename>.dll \n"));
348 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to \n"));
349 fprintf (file, _(" __imp_sym for DATA references\n"));
350 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
351 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n"));
352 fprintf (file, _(" or linking to DLLs (esp. auto-import)\n"));
357 set_pe_name (name, val)
362 /* Find the name and set it. */
363 for (i = 0; init[i].ptr; i++)
365 if (strcmp (name, init[i].symbol) == 0)
390 { "native", 1, "NtProcessStartup" },
391 #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe
392 { "windows", 2, "WinMainCRTStartup" },
394 { "windows", 2, "WinMainCRTStartup" },
396 { "console", 3, "mainCRTStartup" },
398 /* The Microsoft linker does not recognize this. */
401 { "posix", 7, "__PosixProcessStartup"},
402 { "wince", 9, "_WinMainCRTStartup" },
406 sver = strchr (optarg, ':');
408 len = strlen (optarg);
414 set_pe_name ("__major_subsystem_version__",
415 strtoul (sver + 1, &end, 0));
417 set_pe_name ("__minor_subsystem_version__",
418 strtoul (end + 1, &end, 0));
420 einfo (_("%P: warning: bad version number in -subsystem option\n"));
423 for (i = 0; v[i].name; i++)
425 if (strncmp (optarg, v[i].name, len) == 0
426 && v[i].name[len] == '\0')
428 const char *initial_symbol_char;
431 set_pe_name ("__subsystem__", v[i].value);
433 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
434 if (*initial_symbol_char == '\0')
440 /* lang_add_entry expects its argument to be permanently
441 allocated, so we don't free this string. */
442 alc_entry = xmalloc (strlen (initial_symbol_char)
443 + strlen (v[i].entry)
445 strcpy (alc_entry, initial_symbol_char);
446 strcat (alc_entry, v[i].entry);
450 lang_add_entry (entry, 1);
456 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
468 set_pe_name (name, strtoul (optarg, &end, 0));
471 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
477 set_pe_stack_heap (resname, comname)
481 set_pe_value (resname);
486 set_pe_value (comname);
489 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
495 gld_${EMULATION_NAME}_parse_args(argc, argv)
501 int prevoptind = optind;
502 int prevopterr = opterr;
504 static int lastoptind = -1;
506 if (lastoptind != optind)
512 optc = getopt_long_only (argc, argv, "-", longopts, &longind);
523 case OPTION_BASE_FILE:
524 link_info.base_file = (PTR) fopen (optarg, FOPEN_WB);
525 if (link_info.base_file == NULL)
527 /* xgettext:c-format */
528 fprintf (stderr, _("%s: Can't open base file %s\n"),
529 program_name, optarg);
536 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
539 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
541 case OPTION_SUBSYSTEM:
544 case OPTION_MAJOR_OS_VERSION:
545 set_pe_value ("__major_os_version__");
547 case OPTION_MINOR_OS_VERSION:
548 set_pe_value ("__minor_os_version__");
550 case OPTION_MAJOR_SUBSYSTEM_VERSION:
551 set_pe_value ("__major_subsystem_version__");
553 case OPTION_MINOR_SUBSYSTEM_VERSION:
554 set_pe_value ("__minor_subsystem_version__");
556 case OPTION_MAJOR_IMAGE_VERSION:
557 set_pe_value ("__major_image_version__");
559 case OPTION_MINOR_IMAGE_VERSION:
560 set_pe_value ("__minor_image_version__");
562 case OPTION_FILE_ALIGNMENT:
563 set_pe_value ("__file_alignment__");
565 case OPTION_SECTION_ALIGNMENT:
566 set_pe_value ("__section_alignment__");
569 set_pe_name ("__dll__", 1);
571 case OPTION_IMAGE_BASE:
572 set_pe_value ("__image_base__");
574 case OPTION_SUPPORT_OLD_CODE:
575 support_old_code = 1;
577 case OPTION_THUMB_ENTRY:
578 thumb_entry_symbol = optarg;
582 pe_out_def_filename = xstrdup (optarg);
584 case OPTION_EXPORT_ALL:
585 pe_dll_export_everything = 1;
587 case OPTION_EXCLUDE_SYMBOLS:
588 pe_dll_add_excludes (optarg);
590 case OPTION_KILL_ATS:
593 case OPTION_STDCALL_ALIASES:
594 pe_dll_stdcall_aliases = 1;
596 case OPTION_ENABLE_STDCALL_FIXUP:
597 pe_enable_stdcall_fixup = 1;
599 case OPTION_DISABLE_STDCALL_FIXUP:
600 pe_enable_stdcall_fixup = 0;
602 case OPTION_IMPLIB_FILENAME:
603 pe_implib_filename = xstrdup (optarg);
605 case OPTION_WARN_DUPLICATE_EXPORTS:
606 pe_dll_warn_dup_exports = 1;
608 case OPTION_IMP_COMPAT:
609 pe_dll_compat_implib = 1;
611 case OPTION_ENABLE_AUTO_IMAGE_BASE:
612 pe_enable_auto_image_base = 1;
614 case OPTION_DISABLE_AUTO_IMAGE_BASE:
615 pe_enable_auto_image_base = 0;
617 case OPTION_DLL_SEARCH_PREFIX:
618 pe_dll_search_prefix = xstrdup( optarg );
620 case OPTION_NO_DEFAULT_EXCLUDES:
621 pe_dll_do_default_excludes = 0;
623 case OPTION_DLL_ENABLE_AUTO_IMPORT:
624 link_info.pei386_auto_import = true;
626 case OPTION_DLL_DISABLE_AUTO_IMPORT:
627 link_info.pei386_auto_import = false;
629 case OPTION_ENABLE_EXTRA_PE_DEBUG:
630 pe_dll_extra_pe_debug = 1;
640 strhash (const char *str)
642 const unsigned char *s;
649 s = (const unsigned char *) str;
650 while ((c = *s++) != '\0')
652 hash += c + (c << 17);
656 hash += len + (len << 17);
662 /* Use the output file to create a image base for relocatable DLLs. */
664 compute_dll_image_base (const char *ofile)
666 unsigned long hash = strhash (ofile);
667 return 0x60000000 | ((hash << 16) & 0x0FFC0000);
671 /* Assign values to the special symbols before the linker script is
675 gld_${EMULATION_NAME}_set_symbols ()
677 /* Run through and invent symbols for all the
678 names and insert the defaults. */
680 lang_statement_list_type *save;
682 if (!init[IMAGEBASEOFF].inited)
684 if (link_info.relocateable)
685 init[IMAGEBASEOFF].value = 0;
686 else if (init[DLLOFF].value || link_info.shared)
688 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base) ?
689 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
691 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
694 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
697 /* Don't do any symbol assignments if this is a relocateable link. */
698 if (link_info.relocateable)
701 /* Glue the assignments into the abs section */
704 stat_ptr = &(abs_output_section->children);
706 for (j = 0; init[j].ptr; j++)
708 long val = init[j].value;
709 lang_assignment_statement_type *rv;
710 rv = lang_add_assignment (exp_assop ('=' ,init[j].symbol, exp_intop (val)));
711 if (init[j].size == sizeof(short))
712 *(short *)init[j].ptr = val;
713 else if (init[j].size == sizeof(int))
714 *(int *)init[j].ptr = val;
715 else if (init[j].size == sizeof(long))
716 *(long *)init[j].ptr = val;
717 /* This might be a long long or other special type. */
718 else if (init[j].size == sizeof(bfd_vma))
719 *(bfd_vma *)init[j].ptr = val;
721 if (j == IMAGEBASEOFF)
722 image_base_statement = rv;
724 /* Restore the pointer. */
727 if (pe.FileAlignment >
730 einfo (_("%P: warning, file alignment > section alignment.\n"));
734 /* This is called after the linker script and the command line options
738 gld_${EMULATION_NAME}_after_parse ()
740 /* The Windows libraries are designed for the linker to treat the
741 entry point as an undefined symbol. Otherwise, the .obj that
742 defines mainCRTStartup is brought in because it is the first
743 encountered in libc.lib and it has other symbols in it which will
744 be pulled in by the link process. To avoid this, we act as
745 though the user specified -u with the entry point symbol.
747 This function is called after the linker script and command line
748 options have been read, so at this point we know the right entry
749 point. This function is called before the input files are
750 opened, so registering the symbol as undefined will make a
753 if (! link_info.relocateable && entry_symbol != NULL)
754 ldlang_add_undef (entry_symbol);
758 static struct bfd_link_hash_entry *pe_undef_found_sym;
761 pe_undef_cdecl_match (h, string)
762 struct bfd_link_hash_entry *h;
766 sl = strlen (string); /* silence compiler warning */
767 if (h->type == bfd_link_hash_defined
768 && strncmp (h->root.string, string, sl) == 0
769 && h->root.string[sl] == '@')
771 pe_undef_found_sym = h;
780 static int gave_warning_message = 0;
781 struct bfd_link_hash_entry *undef, *sym;
783 if (pe_dll_extra_pe_debug)
785 printf ("%s\n", __FUNCTION__);
788 for (undef = link_info.hash->undefs; undef; undef=undef->next)
789 if (undef->type == bfd_link_hash_undefined)
791 at = strchr (undef->root.string, '@');
794 /* The symbol is a stdcall symbol, so let's look for a cdecl
795 symbol with the same name and resolve to that */
796 char *cname = xstrdup (undef->root.string);
797 at = strchr (cname, '@');
799 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
800 if (sym && sym->type == bfd_link_hash_defined)
802 undef->type = bfd_link_hash_defined;
803 undef->u.def.value = sym->u.def.value;
804 undef->u.def.section = sym->u.def.section;
805 if (pe_enable_stdcall_fixup == -1)
807 einfo (_("Warning: resolving %s by linking to %s\n"),
808 undef->root.string, cname);
809 if (! gave_warning_message)
811 gave_warning_message = 1;
812 einfo(_("Use --enable-stdcall-fixup to disable these warnings\n"));
813 einfo(_("Use --disable-stdcall-fixup to disable these fixups\n"));
820 /* The symbol is a cdecl symbol, so we look for stdcall
821 symbols - which means scanning the whole symbol table */
822 pe_undef_found_sym = 0;
823 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
824 (PTR) undef->root.string);
825 sym = pe_undef_found_sym;
828 undef->type = bfd_link_hash_defined;
829 undef->u.def.value = sym->u.def.value;
830 undef->u.def.section = sym->u.def.section;
831 if (pe_enable_stdcall_fixup == -1)
833 einfo (_("Warning: resolving %s by linking to %s\n"),
834 undef->root.string, sym->root.string);
835 if (! gave_warning_message)
837 gave_warning_message = 1;
838 einfo(_("Use --enable-stdcall-fixup to disable these warnings\n"));
839 einfo(_("Use --disable-stdcall-fixup to disable these fixups\n"));
848 make_import_fixup (rel)
851 struct symbol_cache_entry *sym = *rel->sym_ptr_ptr;
856 if (pe_dll_extra_pe_debug)
858 printf ("arelent: %s@%#x: add=%li\n", sym->name,
859 (int) rel->address, rel->addend);
861 pe_create_import_fixup (rel);
865 char *pe_data_import_dll;
868 pe_find_data_imports ()
870 struct bfd_link_hash_entry *undef, *sym;
871 for (undef = link_info.hash->undefs; undef; undef=undef->next)
873 if (undef->type == bfd_link_hash_undefined)
875 /* C++ symbols are *long* */
877 if (pe_dll_extra_pe_debug)
879 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
881 sprintf (buf, "__imp_%s", undef->root.string);
883 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
884 if (sym && sym->type == bfd_link_hash_defined)
886 einfo (_("Warning: resolving %s by linking to %s (auto-import)\n"),
887 undef->root.string, buf);
889 bfd *b = sym->u.def.section->owner;
891 int nsyms, symsize, i;
893 symsize = bfd_get_symtab_upper_bound (b);
894 symbols = (asymbol **) xmalloc (symsize);
895 nsyms = bfd_canonicalize_symtab (b, symbols);
897 for (i = 0; i < nsyms; i++)
899 if (memcmp(symbols[i]->name, "__head_",
900 sizeof ("__head_") - 1))
902 if (pe_dll_extra_pe_debug)
904 printf ("->%s\n", symbols[i]->name);
906 pe_data_import_dll = (char*) (symbols[i]->name +
907 sizeof ("__head_") - 1);
912 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
915 /* let's differentiate it somehow from defined */
916 undef->type = bfd_link_hash_defweak;
917 /* we replace original name with __imp_ prefixed, this
918 1) may trash memory 2) leads to duplicate symbol generation.
919 Still, IMHO it's better than having name poluted. */
920 undef->root.string = sym->root.string;
921 undef->u.def.value = sym->u.def.value;
922 undef->u.def.section = sym->u.def.section;
927 #endif /* DLL_SUPPORT */
931 struct bfd_hash_entry *h;
932 PTR string ATTRIBUTE_UNUSED;
934 if (pe_dll_extra_pe_debug)
936 printf("+%s\n",h->string);
943 gld_${EMULATION_NAME}_after_open ()
946 if (pe_dll_extra_pe_debug)
949 struct bfd_link_hash_entry *sym;
950 printf ("%s()\n", __FUNCTION__);
952 for (sym = link_info.hash->undefs; sym; sym=sym->next)
953 printf ("-%s\n", sym->root.string);
954 bfd_hash_traverse (&link_info.hash->table, pr_sym,NULL);
956 for (a = link_info.input_bfds; a; a = a->link_next)
958 printf("*%s\n",a->filename);
962 /* Pass the wacky PE command line options into the output bfd.
963 FIXME: This should be done via a function, rather than by
964 including an internal BFD header. */
966 if (coff_data (output_bfd) == NULL || coff_data (output_bfd)->pe == NULL)
967 einfo (_("%F%P: PE operations on non PE file.\n"));
969 pe_data (output_bfd)->pe_opthdr = pe;
970 pe_data (output_bfd)->dll = init[DLLOFF].value;
973 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
974 pe_fixup_stdcalls ();
976 pe_find_data_imports ();
978 pe_process_import_defs(output_bfd, &link_info);
979 if (link_info.shared)
980 pe_dll_build_sections (output_bfd, &link_info);
982 #ifndef TARGET_IS_i386pe
983 #ifndef TARGET_IS_armpe
985 pe_exe_build_sections (output_bfd, &link_info);
990 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
991 if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
993 /* The arm backend needs special fields in the output hash structure.
994 These will only be created if the output format is an arm format,
995 hence we do not support linking and changing output formats at the
996 same time. Use a link followed by objcopy to change output formats. */
997 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1001 /* Find a BFD that can hold the interworking stubs. */
1002 LANG_FOR_EACH_INPUT_STATEMENT (is)
1004 if (bfd_arm_pe_get_bfd_for_interworking (is->the_bfd, & link_info))
1011 /* This next chunk of code tries to detect the case where you have
1012 two import libraries for the same DLL (specifically,
1013 symbolically linking libm.a and libc.a in cygwin to
1014 libcygwin.a). In those cases, it's possible for function
1015 thunks from the second implib to be used but without the
1016 head/tail objects, causing an improper import table. We detect
1017 those cases and rename the "other" import libraries to match
1018 the one the head/tail come from, so that the linker will sort
1019 things nicely and produce a valid import table. */
1021 LANG_FOR_EACH_INPUT_STATEMENT (is)
1023 if (is->the_bfd->my_archive)
1025 int idata2 = 0, reloc_count=0, is_imp = 0;
1028 /* See if this is an import library thunk. */
1029 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1031 if (strcmp (sec->name, ".idata\$2") == 0)
1033 if (strncmp (sec->name, ".idata\$", 7) == 0)
1035 reloc_count += sec->reloc_count;
1038 if (is_imp && !idata2 && reloc_count)
1040 /* It is, look for the reference to head and see if it's
1041 from our own library. */
1042 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1051 symsize = bfd_get_symtab_upper_bound (is->the_bfd);
1054 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1058 symbols = (asymbol **) xmalloc (symsize);
1059 symsize = bfd_canonicalize_symtab (is->the_bfd, symbols);
1062 einfo ("%X%P: unable to process symbols: %E");
1066 relocs = (arelent **) xmalloc ((size_t) relsize);
1067 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1072 einfo ("%X%P: unable to process relocs: %E");
1076 for (i = 0; i < nrelocs; i++)
1078 struct symbol_cache_entry *s;
1079 struct bfd_link_hash_entry * blhe;
1083 s = (relocs[i]->sym_ptr_ptr)[0];
1085 if (s->flags & BSF_LOCAL)
1088 /* Thunk section with reloc to another bfd. */
1089 blhe = bfd_link_hash_lookup (link_info.hash,
1091 false, false, true);
1094 || blhe->type != bfd_link_hash_defined)
1097 other_bfd = blhe->u.def.section->owner;
1099 if (strcmp (is->the_bfd->my_archive->filename,
1100 other_bfd->my_archive->filename) == 0)
1103 /* Rename this implib to match the other. */
1104 n = (char *) xmalloc (strlen (other_bfd->my_archive->filename) + 1);
1106 strcpy (n, other_bfd->my_archive->filename);
1108 is->the_bfd->my_archive->filename = n;
1112 /* Note - we do not free the symbols,
1113 they are now cached in the BFD. */
1123 lang_input_statement_type *is2;
1125 /* Careful - this is a shell script. Watch those dollar signs! */
1126 /* Microsoft import libraries have every member named the same,
1127 and not in the right order for us to link them correctly. We
1128 must detect these and rename the members so that they'll link
1129 correctly. There are three types of objects: the head, the
1130 thunks, and the sentinel(s). The head is easy; it's the one
1131 with idata2. We assume that the sentinels won't have relocs,
1132 and the thunks will. It's easier than checking the symbol
1133 table for external references. */
1134 LANG_FOR_EACH_INPUT_STATEMENT (is)
1136 if (is->the_bfd->my_archive)
1138 bfd *arch = is->the_bfd->my_archive;
1139 if (cur_arch != arch)
1144 is2 && is2->the_bfd->my_archive == arch;
1145 is2 = (lang_input_statement_type *)is2->next)
1147 if (strcmp (is->the_bfd->filename, is2->the_bfd->filename))
1154 int idata2 = 0, reloc_count=0;
1156 char *new_name, seq;
1158 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1160 if (strcmp (sec->name, ".idata\$2") == 0)
1162 reloc_count += sec->reloc_count;
1165 if (idata2) /* .idata2 is the TOC */
1167 else if (reloc_count > 0) /* thunks */
1172 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1173 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1174 is->the_bfd->filename = new_name;
1176 new_name = xmalloc (strlen (is->filename) + 3);
1177 sprintf (new_name, "%s.%c", is->filename, seq);
1178 is->filename = new_name;
1186 gld_${EMULATION_NAME}_before_allocation()
1188 #ifdef TARGET_IS_ppcpe
1189 /* Here we rummage through the found bfds to collect toc information */
1191 LANG_FOR_EACH_INPUT_STATEMENT (is)
1193 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1195 /* xgettext:c-format */
1196 einfo (_("Errors encountered processing file %s\n"), is->filename);
1201 /* We have seen it all. Allocate it, and carry on */
1202 ppc_allocate_toc_section (&link_info);
1203 #endif /* TARGET_IS_ppcpe */
1205 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1206 /* FIXME: we should be able to set the size of the interworking stub
1209 Here we rummage through the found bfds to collect glue
1210 information. FIXME: should this be based on a command line
1211 option? krk@cygnus.com */
1213 LANG_FOR_EACH_INPUT_STATEMENT (is)
1215 if (! bfd_arm_pe_process_before_allocation
1216 (is->the_bfd, & link_info, support_old_code))
1218 /* xgettext:c-format */
1219 einfo (_("Errors encountered processing file %s for interworking"),
1225 /* We have seen it all. Allocate it, and carry on */
1226 bfd_arm_pe_allocate_interworking_sections (& link_info);
1227 #endif /* TARGET_IS_armpe */
1231 /* This is called when an input file isn't recognized as a BFD. We
1232 check here for .DEF files and pull them in automatically. */
1235 saw_option(char *option)
1238 for (i=0; init[i].ptr; i++)
1239 if (strcmp (init[i].symbol, option) == 0)
1240 return init[i].inited;
1243 #endif /* DLL_SUPPORT */
1246 gld_${EMULATION_NAME}_unrecognized_file(entry)
1247 lang_input_statement_type *entry ATTRIBUTE_UNUSED;
1250 const char *ext = entry->filename + strlen (entry->filename) - 4;
1252 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1254 if (pe_def_file == 0)
1255 pe_def_file = def_file_empty ();
1256 def_file_parse (entry->filename, pe_def_file);
1259 int i, buflen=0, len;
1261 for (i=0; i<pe_def_file->num_exports; i++)
1263 len = strlen(pe_def_file->exports[i].internal_name);
1267 buf = (char *) xmalloc (buflen);
1268 for (i=0; i<pe_def_file->num_exports; i++)
1270 struct bfd_link_hash_entry *h;
1271 sprintf(buf, "_%s", pe_def_file->exports[i].internal_name);
1273 h = bfd_link_hash_lookup (link_info.hash, buf, true, true, true);
1274 if (h == (struct bfd_link_hash_entry *) NULL)
1275 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1276 if (h->type == bfd_link_hash_new)
1278 h->type = bfd_link_hash_undefined;
1279 h->u.undef.abfd = NULL;
1280 bfd_link_add_undef (link_info.hash, h);
1285 /* def_file_print (stdout, pe_def_file); */
1286 if (pe_def_file->is_dll == 1)
1287 link_info.shared = 1;
1289 if (pe_def_file->base_address != (bfd_vma)(-1))
1292 pe_data (output_bfd)->pe_opthdr.ImageBase =
1293 init[IMAGEBASEOFF].value = pe_def_file->base_address;
1294 init[IMAGEBASEOFF].inited = 1;
1295 if (image_base_statement)
1296 image_base_statement->exp =
1297 exp_assop ('=', "__image_base__", exp_intop (pe.ImageBase));
1301 /* Not sure if these *should* be set */
1302 if (pe_def_file->version_major != -1)
1304 pe.MajorImageVersion = pe_def_file->version_major;
1305 pe.MinorImageVersion = pe_def_file->version_minor;
1308 if (pe_def_file->stack_reserve != -1
1309 && ! saw_option ("__size_of_stack_reserve__"))
1311 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1312 if (pe_def_file->stack_commit != -1)
1313 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1315 if (pe_def_file->heap_reserve != -1
1316 && ! saw_option ("__size_of_heap_reserve__"))
1318 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1319 if (pe_def_file->heap_commit != -1)
1320 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1331 gld_${EMULATION_NAME}_recognized_file(entry)
1332 lang_input_statement_type *entry ATTRIBUTE_UNUSED;
1335 #ifdef TARGET_IS_i386pe
1336 pe_dll_id_target ("pei-i386");
1338 #ifdef TARGET_IS_shpe
1339 pe_dll_id_target ("pei-shl");
1341 #ifdef TARGET_IS_mipspe
1342 pe_dll_id_target ("pei-mips");
1344 #ifdef TARGET_IS_armpe
1345 pe_dll_id_target ("pei-arm-little");
1347 if (bfd_get_format (entry->the_bfd) == bfd_object)
1349 const char *ext = entry->filename + strlen (entry->filename) - 4;
1350 if (strcmp (ext, ".dll") == 0 || strcmp (ext, ".DLL") == 0)
1351 return pe_implied_import_dll (entry->filename);
1358 gld_${EMULATION_NAME}_finish ()
1360 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1361 struct bfd_link_hash_entry * h;
1363 if (thumb_entry_symbol != NULL)
1365 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true);
1367 if (h != (struct bfd_link_hash_entry *) NULL
1368 && (h->type == bfd_link_hash_defined
1369 || h->type == bfd_link_hash_defweak)
1370 && h->u.def.section->output_section != NULL)
1372 static char buffer[32];
1375 /* Special procesing is required for a Thumb entry symbol. The
1376 bottom bit of its address must be set. */
1377 val = (h->u.def.value
1378 + bfd_get_section_vma (output_bfd,
1379 h->u.def.section->output_section)
1380 + h->u.def.section->output_offset);
1384 /* Now convert this value into a string and store it in entry_symbol
1385 where the lang_finish() function will pick it up. */
1389 sprintf_vma (buffer + 2, val);
1391 if (entry_symbol != NULL && entry_from_cmdline)
1392 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1393 thumb_entry_symbol, entry_symbol);
1394 entry_symbol = buffer;
1397 einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
1399 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) */
1402 if (link_info.shared)
1404 pe_dll_fill_sections (output_bfd, &link_info);
1405 if (pe_implib_filename)
1406 pe_dll_generate_implib (pe_def_file, pe_implib_filename);
1408 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1409 /* ARM doesn't need relocs. */
1412 pe_exe_fill_sections (output_bfd, &link_info);
1416 if (pe_out_def_filename)
1417 pe_dll_generate_def_file (pe_out_def_filename);
1418 #endif /* DLL_SUPPORT */
1420 /* I don't know where .idata gets set as code, but it shouldn't be */
1422 asection *asec = bfd_get_section_by_name (output_bfd, ".idata");
1425 asec->flags &= ~SEC_CODE;
1426 asec->flags |= SEC_DATA;
1432 /* Find the last output section before given output statement.
1433 Used by place_orphan. */
1436 output_prev_sec_find (os)
1437 lang_output_section_statement_type *os;
1439 asection *s = (asection *) NULL;
1440 lang_statement_union_type *u;
1441 lang_output_section_statement_type *lookup;
1443 for (u = lang_output_section_statement.head;
1444 u != (lang_statement_union_type *) NULL;
1447 lookup = &u->output_section_statement;
1451 if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
1452 s = lookup->bfd_section;
1458 /* Place an orphan section.
1460 We use this to put sections in a reasonable place in the file, and
1461 to ensure that they are aligned as required.
1463 We handle grouped sections here as well. A section named .foo$nn
1464 goes into the output section .foo. All grouped sections are sorted
1467 Grouped sections for the default sections are handled by the
1468 default linker script using wildcards, and are sorted by
1473 lang_output_section_statement_type *os;
1475 lang_statement_union_type **stmt;
1480 gld_${EMULATION_NAME}_place_orphan (file, s)
1481 lang_input_statement_type *file;
1484 const char *secname;
1485 char *hold_section_name;
1486 char *dollar = NULL;
1487 const char *ps = NULL;
1488 lang_output_section_statement_type *os;
1489 lang_statement_list_type add_child;
1491 secname = bfd_get_section_name (s->owner, s);
1493 /* Look through the script to see where to place this section. */
1495 hold_section_name = xstrdup (secname);
1496 if (!link_info.relocateable)
1498 dollar = strchr (hold_section_name, '$');
1503 os = lang_output_section_find (hold_section_name);
1505 lang_list_init (&add_child);
1508 && (os->bfd_section == NULL
1509 || ((s->flags ^ os->bfd_section->flags)
1510 & (SEC_LOAD | SEC_ALLOC)) == 0))
1512 /* We already have an output section statement with this
1513 name, and its bfd section, if any, has compatible flags. */
1514 lang_add_section (&add_child, s, os, file);
1518 struct orphan_save *place;
1519 static struct orphan_save hold_text;
1520 static struct orphan_save hold_rdata;
1521 static struct orphan_save hold_data;
1522 static struct orphan_save hold_bss;
1524 lang_statement_list_type *old;
1525 lang_statement_list_type add;
1526 etree_type *address;
1528 /* Try to put the new output section in a reasonable place based
1529 on the section name and section flags. */
1530 #define HAVE_SECTION(hold, name) \
1531 (hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL)
1534 if ((s->flags & SEC_ALLOC) == 0)
1536 else if ((s->flags & SEC_HAS_CONTENTS) == 0
1537 && HAVE_SECTION (hold_bss, ".bss"))
1539 else if ((s->flags & SEC_READONLY) == 0
1540 && HAVE_SECTION (hold_data, ".data"))
1542 else if ((s->flags & SEC_CODE) == 0
1543 && (s->flags & SEC_READONLY) != 0
1544 && HAVE_SECTION (hold_rdata, ".rdata"))
1545 place = &hold_rdata;
1546 else if ((s->flags & SEC_READONLY) != 0
1547 && HAVE_SECTION (hold_text, ".text"))
1552 /* Choose a unique name for the section. This will be needed if
1553 the same section name appears in the input file with
1554 different loadable or allocatable characteristics. */
1555 outsecname = xstrdup (hold_section_name);
1556 if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
1562 len = strlen (outsecname);
1563 newname = xmalloc (len + 5);
1564 strcpy (newname, outsecname);
1568 sprintf (newname + len, "%d", i);
1571 while (bfd_get_section_by_name (output_bfd, newname) != NULL);
1574 outsecname = newname;
1577 /* Start building a list of statements for this section. */
1580 lang_list_init (stat_ptr);
1582 if (config.build_constructors)
1584 /* If the name of the section is representable in C, then create
1585 symbols to mark the start and the end of the section. */
1586 for (ps = outsecname; *ps != '\0'; ps++)
1587 if (! isalnum ((unsigned char) *ps) && *ps != '_')
1592 etree_type *e_align;
1594 symname = (char *) xmalloc (ps - outsecname + sizeof "___start_");
1595 sprintf (symname, "___start_%s", outsecname);
1596 e_align = exp_unop (ALIGN_K,
1597 exp_intop ((bfd_vma) 1 << s->alignment_power));
1598 lang_add_assignment (exp_assop ('=', symname, e_align));
1602 if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
1603 address = exp_intop ((bfd_vma) 0);
1606 /* All sections in an executable must be aligned to a page
1608 address = exp_unop (ALIGN_K,
1609 exp_nameop (NAME, "__section_alignment__"));
1612 os = lang_enter_output_section_statement (outsecname, address, 0,
1614 (etree_type *) NULL,
1615 (etree_type *) NULL,
1616 (etree_type *) NULL);
1618 lang_add_section (&add_child, s, os, file);
1620 lang_leave_output_section_statement
1621 ((bfd_vma) 0, "*default*",
1622 (struct lang_output_section_phdr_list *) NULL, "*default*");
1624 if (config.build_constructors && *ps == '\0')
1628 /* lang_leave_ouput_section_statement resets stat_ptr. Put
1629 stat_ptr back where we want it. */
1633 symname = (char *) xmalloc (ps - outsecname + sizeof "___stop_");
1634 sprintf (symname, "___stop_%s", outsecname);
1635 lang_add_assignment (exp_assop ('=', symname,
1636 exp_nameop (NAME, ".")));
1643 asection *snew, **pps;
1645 snew = os->bfd_section;
1647 /* Shuffle the bfd section list to make the output file look
1648 neater. This is really only cosmetic. */
1649 if (place->section == NULL)
1651 asection *bfd_section = place->os->bfd_section;
1653 /* If the output statement hasn't been used to place
1654 any input sections (and thus doesn't have an output
1655 bfd_section), look for the closest prior output statement
1656 having an output section. */
1657 if (bfd_section == NULL)
1658 bfd_section = output_prev_sec_find (place->os);
1660 if (bfd_section != NULL && bfd_section != snew)
1661 place->section = &bfd_section->next;
1664 if (place->section != NULL)
1666 /* Unlink the section. */
1667 for (pps = &output_bfd->sections;
1669 pps = &(*pps)->next)
1673 /* Now tack it on to the "place->os" section list. */
1674 snew->next = *place->section;
1675 *place->section = snew;
1678 /* Save the end of this list. Further ophans of this type will
1679 follow the one we've just added. */
1680 place->section = &snew->next;
1682 /* The following is non-cosmetic. We try to put the output
1683 statements in some sort of reasonable order here, because
1684 they determine the final load addresses of the orphan
1685 sections. In addition, placing output statements in the
1686 wrong order may require extra segments. For instance,
1687 given a typical situation of all read-only sections placed
1688 in one segment and following that a segment containing all
1689 the read-write sections, we wouldn't want to place an orphan
1690 read/write section before or amongst the read-only ones. */
1691 if (add.head != NULL)
1693 if (place->stmt == NULL)
1695 /* Put the new statement list right at the head. */
1696 *add.tail = place->os->header.next;
1697 place->os->header.next = add.head;
1701 /* Put it after the last orphan statement we added. */
1702 *add.tail = *place->stmt;
1703 *place->stmt = add.head;
1706 /* Fix the global list pointer if we happened to tack our
1707 new list at the tail. */
1708 if (*old->tail == add.head)
1709 old->tail = add.tail;
1711 /* Save the end of this list. */
1712 place->stmt = add.tail;
1718 lang_statement_union_type **pl = &os->children.head;
1722 boolean found_dollar;
1724 /* The section name has a '$'. Sort it with the other '$'
1727 found_dollar = false;
1728 for ( ; *pl != NULL; pl = &(*pl)->header.next)
1730 lang_input_section_type *ls;
1733 if ((*pl)->header.type != lang_input_section_enum)
1736 ls = &(*pl)->input_section;
1738 lname = bfd_get_section_name (ls->ifile->the_bfd, ls->section);
1739 if (strchr (lname, '$') == NULL)
1746 found_dollar = true;
1747 if (strcmp (secname, lname) < 0)
1753 if (add_child.head != NULL)
1755 add_child.head->header.next = *pl;
1756 *pl = add_child.head;
1760 free (hold_section_name);
1766 gld_${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
1767 const char * arch ATTRIBUTE_UNUSED;
1768 search_dirs_type * search;
1769 lang_input_statement_type * entry;
1771 const char * filename;
1774 if (! entry->is_archive)
1777 filename = entry->filename;
1779 string = (char *) xmalloc (strlen (search->name)
1781 + sizeof "/lib.a.dll"
1783 + (pe_dll_search_prefix ? strlen (pe_dll_search_prefix) : 0)
1787 /* Try "libfoo.dll.a" first (preferred explicit import library for dll's */
1788 sprintf (string, "%s/lib%s.dll.a", search->name, filename);
1790 if (! ldfile_try_open_bfd (string, entry))
1792 /* Try "foo.dll.a" next (alternate explicit import library for dll's */
1793 sprintf (string, "%s/%s.dll.a", search->name, filename);
1794 if (! ldfile_try_open_bfd (string, entry))
1797 Try libfoo.a next. Normally, this would be interpreted as a static
1798 library, but it *could* be an import library. For backwards compatibility,
1799 libfoo.a needs to ==precede== libfoo.dll and foo.dll in the search,
1800 or sometimes errors occur when building legacy packages.
1802 Putting libfoo.a here means that in a failure case (i.e. the library
1803 -lfoo is not found) we will search for libfoo.a twice before
1804 giving up -- once here, and once when searching for a "static" lib.
1807 /* Try "libfoo.a" (import lib, or static lib, but must
1808 take precedence over dll's) */
1809 sprintf (string, "%s/lib%s.a", search->name, filename);
1810 if (! ldfile_try_open_bfd (string, entry))
1813 if (pe_dll_search_prefix)
1815 /* Try "<prefix>foo.dll" (preferred dll name, if specified) */
1816 sprintf (string, "%s/%s%s.dll", search->name, pe_dll_search_prefix, filename);
1817 if (! ldfile_try_open_bfd (string, entry))
1819 /* Try "libfoo.dll" (default preferred dll name) */
1820 sprintf (string, "%s/lib%s.dll", search->name, filename);
1821 if (! ldfile_try_open_bfd (string, entry))
1823 /* Finally, try "foo.dll" (alternate dll name) */
1824 sprintf (string, "%s/%s.dll", search->name, filename);
1825 if (! ldfile_try_open_bfd (string, entry))
1833 else /* pe_dll_search_prefix not specified */
1836 /* Try "libfoo.dll" (preferred dll name) */
1837 sprintf (string, "%s/lib%s.dll", search->name, filename);
1838 if (! ldfile_try_open_bfd (string, entry))
1840 /* Finally, try "foo.dll" (alternate dll name) */
1841 sprintf (string, "%s/%s.dll", search->name, filename);
1842 if (! ldfile_try_open_bfd (string, entry))
1853 entry->filename = string;
1859 gld_${EMULATION_NAME}_find_potential_libraries (name, entry)
1861 lang_input_statement_type * entry;
1863 return ldfile_open_file_search (name, entry, "", ".lib");
1867 gld_${EMULATION_NAME}_get_script(isfile)
1870 # Scripts compiled in.
1871 # sed commands to quote an ld script as a C string.
1872 sc="-f stringify.sed"
1874 cat >>e${EMULATION_NAME}.c <<EOF
1878 if (link_info.relocateable == true && config.build_constructors == true)
1881 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1882 echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
1883 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1884 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1885 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1886 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1887 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1888 echo ' ; else return' >> e${EMULATION_NAME}.c
1889 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1890 echo '; }' >> e${EMULATION_NAME}.c
1892 cat >>e${EMULATION_NAME}.c <<EOF
1895 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1897 gld_${EMULATION_NAME}_before_parse,
1900 gld_${EMULATION_NAME}_after_parse,
1901 gld_${EMULATION_NAME}_after_open,
1902 after_allocation_default,
1903 set_output_arch_default,
1904 ldemul_default_target,
1905 gld_${EMULATION_NAME}_before_allocation,
1906 gld_${EMULATION_NAME}_get_script,
1907 "${EMULATION_NAME}",
1909 gld_${EMULATION_NAME}_finish, /* finish */
1910 NULL, /* create output section statements */
1911 gld_${EMULATION_NAME}_open_dynamic_archive,
1912 gld_${EMULATION_NAME}_place_orphan,
1913 gld_${EMULATION_NAME}_set_symbols,
1914 gld_${EMULATION_NAME}_parse_args,
1915 gld_${EMULATION_NAME}_unrecognized_file,
1916 gld_${EMULATION_NAME}_list_options,
1917 gld_${EMULATION_NAME}_recognized_file,
1918 gld_${EMULATION_NAME}_find_potential_libraries