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, 2002
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. */
36 #define TARGET_IS_${EMULATION_NAME}
38 /* Do this before including bfd.h, so we prototype the right functions. */
39 #ifdef TARGET_IS_arm_epoc_pe
40 #define bfd_arm_pe_allocate_interworking_sections \
41 bfd_arm_epoc_pe_allocate_interworking_sections
42 #define bfd_arm_pe_get_bfd_for_interworking \
43 bfd_arm_epoc_pe_get_bfd_for_interworking
44 #define bfd_arm_pe_process_before_allocation \
45 bfd_arm_epoc_pe_process_before_allocation
52 #include "libiberty.h"
63 #include "coff/internal.h"
65 /* FIXME: This is a BFD internal header file, and we should not be
67 #include "../bfd/libcoff.h"
74 /* Permit the emulation parameters to override the default section
75 alignment by setting OVERRIDE_SECTION_ALIGNMENT. FIXME: This makes
76 it seem that include/coff/internal.h should not define
77 PE_DEF_SECTION_ALIGNMENT. */
78 #if PE_DEF_SECTION_ALIGNMENT != ${OVERRIDE_SECTION_ALIGNMENT:-PE_DEF_SECTION_ALIGNMENT}
79 #undef PE_DEF_SECTION_ALIGNMENT
80 #define PE_DEF_SECTION_ALIGNMENT ${OVERRIDE_SECTION_ALIGNMENT}
83 #if defined(TARGET_IS_i386pe)
86 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe) || defined(TARGET_IS_armpe)
90 #if defined(TARGET_IS_i386pe) || ! defined(DLL_SUPPORT)
91 #define PE_DEF_SUBSYSTEM 3
93 #undef NT_EXE_IMAGE_BASE
94 #undef PE_DEF_SECTION_ALIGNMENT
95 #undef PE_DEF_FILE_ALIGNMENT
96 #define NT_EXE_IMAGE_BASE 0x00010000
97 #ifdef TARGET_IS_armpe
98 #define PE_DEF_SECTION_ALIGNMENT 0x00001000
99 #define PE_DEF_SUBSYSTEM 9
101 #define PE_DEF_SECTION_ALIGNMENT 0x00000400
102 #define PE_DEF_SUBSYSTEM 2
104 #define PE_DEF_FILE_ALIGNMENT 0x00000200
107 static void gld_${EMULATION_NAME}_set_symbols PARAMS ((void));
108 static void gld_${EMULATION_NAME}_after_open PARAMS ((void));
109 static void gld_${EMULATION_NAME}_before_parse PARAMS ((void));
110 static void gld_${EMULATION_NAME}_after_parse PARAMS ((void));
111 static void gld_${EMULATION_NAME}_before_allocation PARAMS ((void));
112 static asection *output_prev_sec_find
113 PARAMS ((lang_output_section_statement_type *));
114 static boolean gld_${EMULATION_NAME}_place_orphan
115 PARAMS ((lang_input_statement_type *, asection *));
116 static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *));
117 static int gld_${EMULATION_NAME}_parse_args PARAMS ((int, char **));
118 static void gld_${EMULATION_NAME}_finish PARAMS ((void));
119 static boolean gld_${EMULATION_NAME}_open_dynamic_archive
120 PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
121 static void gld_${EMULATION_NAME}_list_options PARAMS ((FILE *));
122 static void set_pe_name PARAMS ((char *, long));
123 static void set_pe_subsystem PARAMS ((void));
124 static void set_pe_value PARAMS ((char *));
125 static void set_pe_stack_heap PARAMS ((char *, char *));
128 static boolean pe_undef_cdecl_match
129 PARAMS ((struct bfd_link_hash_entry *, PTR));
130 static void pe_fixup_stdcalls PARAMS ((void));
131 static int make_import_fixup PARAMS ((arelent *, asection *));
132 static void pe_find_data_imports PARAMS ((void));
135 static boolean pr_sym PARAMS ((struct bfd_hash_entry *, PTR string));
136 static boolean gld_${EMULATION_NAME}_unrecognized_file
137 PARAMS ((lang_input_statement_type *));
138 static boolean gld_${EMULATION_NAME}_recognized_file
139 PARAMS ((lang_input_statement_type *));
140 static int gld_${EMULATION_NAME}_find_potential_libraries
141 PARAMS ((char *, lang_input_statement_type *));
144 static struct internal_extra_pe_aouthdr pe;
146 static int support_old_code = 0;
147 static char * thumb_entry_symbol = NULL;
148 static lang_assignment_statement_type *image_base_statement = 0;
151 static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable */
152 static char *pe_out_def_filename = NULL;
153 static char *pe_implib_filename = NULL;
154 static int pe_enable_auto_image_base = 0;
155 static char *pe_dll_search_prefix = NULL;
158 extern const char *output_filename;
161 gld_${EMULATION_NAME}_before_parse()
163 const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}");
166 ldfile_output_architecture = arch->arch;
167 ldfile_output_machine = arch->mach;
168 ldfile_output_machine_name = arch->printable_name;
171 ldfile_output_architecture = bfd_arch_${ARCH};
172 output_filename = "${EXECUTABLE_NAME:-a.exe}";
174 config.dynamic_link = true;
175 config.has_shared = 1;
176 /* link_info.pei386_auto_import = true; */
178 #if (PE_DEF_SUBSYSTEM == 9) || (PE_DEF_SUBSYSTEM == 2)
179 #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe
180 lang_add_entry ("WinMainCRTStartup", 1);
182 lang_add_entry ("_WinMainCRTStartup", 1);
188 /* PE format extra command line options. */
190 /* Used for setting flags in the PE header. */
191 #define OPTION_BASE_FILE (300 + 1)
192 #define OPTION_DLL (OPTION_BASE_FILE + 1)
193 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
194 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
195 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
196 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
197 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
198 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
199 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
200 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
201 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
202 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
203 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
204 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
205 #define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1)
206 #define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1)
207 #define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1)
208 #define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1)
209 #define OPTION_KILL_ATS (OPTION_EXCLUDE_SYMBOLS + 1)
210 #define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1)
211 #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1)
212 #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1)
213 #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1)
214 #define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1)
215 #define OPTION_WARN_DUPLICATE_EXPORTS (OPTION_THUMB_ENTRY + 1)
216 #define OPTION_IMP_COMPAT (OPTION_WARN_DUPLICATE_EXPORTS + 1)
217 #define OPTION_ENABLE_AUTO_IMAGE_BASE (OPTION_IMP_COMPAT + 1)
218 #define OPTION_DISABLE_AUTO_IMAGE_BASE (OPTION_ENABLE_AUTO_IMAGE_BASE + 1)
219 #define OPTION_DLL_SEARCH_PREFIX (OPTION_DISABLE_AUTO_IMAGE_BASE + 1)
220 #define OPTION_NO_DEFAULT_EXCLUDES (OPTION_DLL_SEARCH_PREFIX + 1)
221 #define OPTION_DLL_ENABLE_AUTO_IMPORT (OPTION_NO_DEFAULT_EXCLUDES + 1)
222 #define OPTION_DLL_DISABLE_AUTO_IMPORT (OPTION_DLL_ENABLE_AUTO_IMPORT + 1)
223 #define OPTION_ENABLE_EXTRA_PE_DEBUG (OPTION_DLL_DISABLE_AUTO_IMPORT + 1)
225 static struct option longopts[] = {
227 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
228 {"dll", no_argument, NULL, OPTION_DLL},
229 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
230 {"heap", required_argument, NULL, OPTION_HEAP},
231 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
232 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
233 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
234 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
235 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
236 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
237 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
238 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
239 {"stack", required_argument, NULL, OPTION_STACK},
240 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
241 {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE},
242 {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY},
244 /* getopt allows abbreviations, so we do this to stop it from treating -o
245 as an abbreviation for this option */
246 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
247 {"output-def", required_argument, NULL, OPTION_OUT_DEF},
248 {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL},
249 {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS},
250 {"kill-at", no_argument, NULL, OPTION_KILL_ATS},
251 {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES},
252 {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP},
253 {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP},
254 {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME},
255 {"warn-duplicate-exports", no_argument, NULL, OPTION_WARN_DUPLICATE_EXPORTS},
256 {"compat-implib", no_argument, NULL, OPTION_IMP_COMPAT},
257 {"enable-auto-image-base", no_argument, NULL, OPTION_ENABLE_AUTO_IMAGE_BASE},
258 {"disable-auto-image-base", no_argument, NULL, OPTION_DISABLE_AUTO_IMAGE_BASE},
259 {"dll-search-prefix", required_argument, NULL, OPTION_DLL_SEARCH_PREFIX},
260 {"no-default-excludes", no_argument, NULL, OPTION_NO_DEFAULT_EXCLUDES},
261 {"enable-auto-import", no_argument, NULL, OPTION_DLL_ENABLE_AUTO_IMPORT},
262 {"disable-auto-import", no_argument, NULL, OPTION_DLL_DISABLE_AUTO_IMPORT},
263 {"enable-extra-pe-debug", no_argument, NULL, OPTION_ENABLE_EXTRA_PE_DEBUG},
265 {NULL, no_argument, NULL, 0}
269 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
270 parameters which may be input from the command line */
281 #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
283 static definfo init[] =
285 /* imagebase must be first */
286 #define IMAGEBASEOFF 0
287 D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
289 {&dll, sizeof(dll), 0, "__dll__", 0},
290 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
291 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
292 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
293 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
294 D(MajorImageVersion,"__major_image_version__", 1),
295 D(MinorImageVersion,"__minor_image_version__", 0),
296 #ifdef TARGET_IS_armpe
297 D(MajorSubsystemVersion,"__major_subsystem_version__", 2),
299 D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
301 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
302 D(Subsystem,"__subsystem__", ${SUBSYSTEM}),
303 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x200000),
304 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
305 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
306 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
307 D(LoaderFlags,"__loader_flags__", 0x0),
308 { NULL, 0, 0, NULL, 0 }
312 gld_${EMULATION_NAME}_list_options (file)
315 fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n"));
316 fprintf (file, _(" --dll Set image base to the default for DLLs\n"));
317 fprintf (file, _(" --file-alignment <size> Set file alignment\n"));
318 fprintf (file, _(" --heap <size> Set initial size of the heap\n"));
319 fprintf (file, _(" --image-base <address> Set start address of the executable\n"));
320 fprintf (file, _(" --major-image-version <number> Set version number of the executable\n"));
321 fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n"));
322 fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n"));
323 fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n"));
324 fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n"));
325 fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n"));
326 fprintf (file, _(" --section-alignment <size> Set section alignment\n"));
327 fprintf (file, _(" --stack <size> Set size of the initial stack\n"));
328 fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n"));
329 fprintf (file, _(" --support-old-code Support interworking with old code\n"));
330 fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n"));
332 fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n"));
333 fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n"));
334 fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n"));
335 fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n"));
336 fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n"));
337 fprintf (file, _(" --kill-at Remove @nn from exported symbols\n"));
338 fprintf (file, _(" --out-implib <file> Generate import library\n"));
339 fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n"));
340 fprintf (file, _(" --warn-duplicate-exports Warn about duplicate exports.\n"));
341 fprintf (file, _(" --compat-implib Create backward compatible import libs;\n\
342 create __imp_<SYMBOL> as well.\n"));
343 fprintf (file, _(" --enable-auto-image-base Automatically choose image base for DLLs\n\
344 unless user specifies one\n"));
345 fprintf (file, _(" --disable-auto-image-base Do not auto-choose image base. (default)\n"));
346 fprintf (file, _(" --dll-search-prefix=<string> When linking dynamically to a dll without an\n\
347 importlib, use <string><basename>.dll \n\
348 in preference to lib<basename>.dll \n"));
349 fprintf (file, _(" --enable-auto-import Do sophistcated linking of _sym to \n\
350 __imp_sym for DATA references\n"));
351 fprintf (file, _(" --disable-auto-import Do not auto-import DATA items from DLLs\n"));
352 fprintf (file, _(" --enable-extra-pe-debug Enable verbose debug output when building\n\
353 or linking to DLLs (esp. auto-import)\n"));
358 set_pe_name (name, val)
363 /* Find the name and set it. */
364 for (i = 0; init[i].ptr; i++)
366 if (strcmp (name, init[i].symbol) == 0)
391 { "native", 1, "NtProcessStartup" },
392 #if defined TARGET_IS_mipspe || defined TARGET_IS_armpe
393 { "windows", 2, "WinMainCRTStartup" },
395 { "windows", 2, "WinMainCRTStartup" },
397 { "console", 3, "mainCRTStartup" },
399 /* The Microsoft linker does not recognize this. */
402 { "posix", 7, "__PosixProcessStartup"},
403 { "wince", 9, "_WinMainCRTStartup" },
407 sver = strchr (optarg, ':');
409 len = strlen (optarg);
415 set_pe_name ("__major_subsystem_version__",
416 strtoul (sver + 1, &end, 0));
418 set_pe_name ("__minor_subsystem_version__",
419 strtoul (end + 1, &end, 0));
421 einfo (_("%P: warning: bad version number in -subsystem option\n"));
424 for (i = 0; v[i].name; i++)
426 if (strncmp (optarg, v[i].name, len) == 0
427 && v[i].name[len] == '\0')
429 const char *initial_symbol_char;
432 set_pe_name ("__subsystem__", v[i].value);
434 initial_symbol_char = ${INITIAL_SYMBOL_CHAR};
435 if (*initial_symbol_char == '\0')
441 /* lang_add_entry expects its argument to be permanently
442 allocated, so we don't free this string. */
443 alc_entry = xmalloc (strlen (initial_symbol_char)
444 + strlen (v[i].entry)
446 strcpy (alc_entry, initial_symbol_char);
447 strcat (alc_entry, v[i].entry);
451 lang_add_entry (entry, 0);
457 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
469 set_pe_name (name, strtoul (optarg, &end, 0));
472 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
478 set_pe_stack_heap (resname, comname)
482 set_pe_value (resname);
487 set_pe_value (comname);
490 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
496 gld_${EMULATION_NAME}_parse_args(argc, argv)
502 int prevoptind = optind;
503 int prevopterr = opterr;
505 static int lastoptind = -1;
507 if (lastoptind != optind)
513 optc = getopt_long_only (argc, argv, "-", longopts, &longind);
524 case OPTION_BASE_FILE:
525 link_info.base_file = (PTR) fopen (optarg, FOPEN_WB);
526 if (link_info.base_file == NULL)
528 /* xgettext:c-format */
529 fprintf (stderr, _("%s: Can't open base file %s\n"),
530 program_name, optarg);
537 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
540 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
542 case OPTION_SUBSYSTEM:
545 case OPTION_MAJOR_OS_VERSION:
546 set_pe_value ("__major_os_version__");
548 case OPTION_MINOR_OS_VERSION:
549 set_pe_value ("__minor_os_version__");
551 case OPTION_MAJOR_SUBSYSTEM_VERSION:
552 set_pe_value ("__major_subsystem_version__");
554 case OPTION_MINOR_SUBSYSTEM_VERSION:
555 set_pe_value ("__minor_subsystem_version__");
557 case OPTION_MAJOR_IMAGE_VERSION:
558 set_pe_value ("__major_image_version__");
560 case OPTION_MINOR_IMAGE_VERSION:
561 set_pe_value ("__minor_image_version__");
563 case OPTION_FILE_ALIGNMENT:
564 set_pe_value ("__file_alignment__");
566 case OPTION_SECTION_ALIGNMENT:
567 set_pe_value ("__section_alignment__");
570 set_pe_name ("__dll__", 1);
572 case OPTION_IMAGE_BASE:
573 set_pe_value ("__image_base__");
575 case OPTION_SUPPORT_OLD_CODE:
576 support_old_code = 1;
578 case OPTION_THUMB_ENTRY:
579 thumb_entry_symbol = optarg;
583 pe_out_def_filename = xstrdup (optarg);
585 case OPTION_EXPORT_ALL:
586 pe_dll_export_everything = 1;
588 case OPTION_EXCLUDE_SYMBOLS:
589 pe_dll_add_excludes (optarg);
591 case OPTION_KILL_ATS:
594 case OPTION_STDCALL_ALIASES:
595 pe_dll_stdcall_aliases = 1;
597 case OPTION_ENABLE_STDCALL_FIXUP:
598 pe_enable_stdcall_fixup = 1;
600 case OPTION_DISABLE_STDCALL_FIXUP:
601 pe_enable_stdcall_fixup = 0;
603 case OPTION_IMPLIB_FILENAME:
604 pe_implib_filename = xstrdup (optarg);
606 case OPTION_WARN_DUPLICATE_EXPORTS:
607 pe_dll_warn_dup_exports = 1;
609 case OPTION_IMP_COMPAT:
610 pe_dll_compat_implib = 1;
612 case OPTION_ENABLE_AUTO_IMAGE_BASE:
613 pe_enable_auto_image_base = 1;
615 case OPTION_DISABLE_AUTO_IMAGE_BASE:
616 pe_enable_auto_image_base = 0;
618 case OPTION_DLL_SEARCH_PREFIX:
619 pe_dll_search_prefix = xstrdup( optarg );
621 case OPTION_NO_DEFAULT_EXCLUDES:
622 pe_dll_do_default_excludes = 0;
624 case OPTION_DLL_ENABLE_AUTO_IMPORT:
625 link_info.pei386_auto_import = true;
627 case OPTION_DLL_DISABLE_AUTO_IMPORT:
628 link_info.pei386_auto_import = false;
630 case OPTION_ENABLE_EXTRA_PE_DEBUG:
631 pe_dll_extra_pe_debug = 1;
641 strhash (const char *str)
643 const unsigned char *s;
650 s = (const unsigned char *) str;
651 while ((c = *s++) != '\0')
653 hash += c + (c << 17);
657 hash += len + (len << 17);
663 /* Use the output file to create a image base for relocatable DLLs. */
665 compute_dll_image_base (const char *ofile)
667 unsigned long hash = strhash (ofile);
668 return 0x60000000 | ((hash << 16) & 0x0FFC0000);
672 /* Assign values to the special symbols before the linker script is
676 gld_${EMULATION_NAME}_set_symbols ()
678 /* Run through and invent symbols for all the
679 names and insert the defaults. */
681 lang_statement_list_type *save;
683 if (!init[IMAGEBASEOFF].inited)
685 if (link_info.relocateable)
686 init[IMAGEBASEOFF].value = 0;
687 else if (init[DLLOFF].value || link_info.shared)
689 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base) ?
690 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
692 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
695 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
698 /* Don't do any symbol assignments if this is a relocateable link. */
699 if (link_info.relocateable)
702 /* Glue the assignments into the abs section */
705 stat_ptr = &(abs_output_section->children);
707 for (j = 0; init[j].ptr; j++)
709 long val = init[j].value;
710 lang_assignment_statement_type *rv;
711 rv = lang_add_assignment (exp_assop ('=', init[j].symbol,
713 if (init[j].size == sizeof(short))
714 *(short *)init[j].ptr = val;
715 else if (init[j].size == sizeof(int))
716 *(int *)init[j].ptr = val;
717 else if (init[j].size == sizeof(long))
718 *(long *)init[j].ptr = val;
719 /* This might be a long long or other special type. */
720 else if (init[j].size == sizeof(bfd_vma))
721 *(bfd_vma *)init[j].ptr = val;
723 if (j == IMAGEBASEOFF)
724 image_base_statement = rv;
726 /* Restore the pointer. */
729 if (pe.FileAlignment >
732 einfo (_("%P: warning, file alignment > section alignment.\n"));
736 /* This is called after the linker script and the command line options
740 gld_${EMULATION_NAME}_after_parse ()
742 /* The Windows libraries are designed for the linker to treat the
743 entry point as an undefined symbol. Otherwise, the .obj that
744 defines mainCRTStartup is brought in because it is the first
745 encountered in libc.lib and it has other symbols in it which will
746 be pulled in by the link process. To avoid this, we act as
747 though the user specified -u with the entry point symbol.
749 This function is called after the linker script and command line
750 options have been read, so at this point we know the right entry
751 point. This function is called before the input files are
752 opened, so registering the symbol as undefined will make a
755 if (! link_info.relocateable && entry_symbol != NULL)
756 ldlang_add_undef (entry_symbol);
759 /* pe-dll.c directly accesses pe_data_import_dll,
760 so it must be defined outside of #ifdef DLL_SUPPORT.
761 Note - this variable is deliberately not initialised.
762 This allows it to be treated as a common varaible, and only
763 exist in one incarnation in a multiple target enabled linker. */
764 char * pe_data_import_dll;
767 static struct bfd_link_hash_entry *pe_undef_found_sym;
770 pe_undef_cdecl_match (h, string)
771 struct bfd_link_hash_entry *h;
775 sl = strlen (string); /* silence compiler warning */
776 if (h->type == bfd_link_hash_defined
777 && strncmp (h->root.string, string, sl) == 0
778 && h->root.string[sl] == '@')
780 pe_undef_found_sym = h;
789 static int gave_warning_message = 0;
790 struct bfd_link_hash_entry *undef, *sym;
792 if (pe_dll_extra_pe_debug)
794 printf ("%s\n", __FUNCTION__);
797 for (undef = link_info.hash->undefs; undef; undef=undef->next)
798 if (undef->type == bfd_link_hash_undefined)
800 at = strchr (undef->root.string, '@');
803 /* The symbol is a stdcall symbol, so let's look for a cdecl
804 symbol with the same name and resolve to that */
805 char *cname = xstrdup (undef->root.string);
806 at = strchr (cname, '@');
808 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
809 if (sym && sym->type == bfd_link_hash_defined)
811 undef->type = bfd_link_hash_defined;
812 undef->u.def.value = sym->u.def.value;
813 undef->u.def.section = sym->u.def.section;
814 if (pe_enable_stdcall_fixup == -1)
816 einfo (_("Warning: resolving %s by linking to %s\n"),
817 undef->root.string, cname);
818 if (! gave_warning_message)
820 gave_warning_message = 1;
821 einfo(_("Use --enable-stdcall-fixup to disable these warnings\n"));
822 einfo(_("Use --disable-stdcall-fixup to disable these fixups\n"));
829 /* The symbol is a cdecl symbol, so we look for stdcall
830 symbols - which means scanning the whole symbol table */
831 pe_undef_found_sym = 0;
832 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
833 (PTR) undef->root.string);
834 sym = pe_undef_found_sym;
837 undef->type = bfd_link_hash_defined;
838 undef->u.def.value = sym->u.def.value;
839 undef->u.def.section = sym->u.def.section;
840 if (pe_enable_stdcall_fixup == -1)
842 einfo (_("Warning: resolving %s by linking to %s\n"),
843 undef->root.string, sym->root.string);
844 if (! gave_warning_message)
846 gave_warning_message = 1;
847 einfo(_("Use --enable-stdcall-fixup to disable these warnings\n"));
848 einfo(_("Use --disable-stdcall-fixup to disable these fixups\n"));
857 make_import_fixup (rel, s)
861 struct symbol_cache_entry *sym = *rel->sym_ptr_ptr;
863 if (pe_dll_extra_pe_debug)
865 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
866 (long) rel->address, (long) rel->addend);
871 if (!bfd_get_section_contents(s->owner, s, &addend, rel->address, sizeof(addend)))
873 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
874 s->owner, s, rel->address);
878 pe_create_import_fixup (rel);
881 einfo (_("%C: variable '%T' can't be auto-imported. Please read the documentation for ld's --enable-auto-import for details.\n"),
882 s->owner, s, rel->address, sym->name);
891 pe_find_data_imports ()
893 struct bfd_link_hash_entry *undef, *sym;
894 for (undef = link_info.hash->undefs; undef; undef=undef->next)
896 if (undef->type == bfd_link_hash_undefined)
898 /* C++ symbols are *long* */
900 if (pe_dll_extra_pe_debug)
902 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
904 sprintf (buf, "__imp_%s", undef->root.string);
906 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
907 if (sym && sym->type == bfd_link_hash_defined)
909 einfo (_("Warning: resolving %s by linking to %s (auto-import)\n"),
910 undef->root.string, buf);
912 bfd *b = sym->u.def.section->owner;
914 int nsyms, symsize, i;
916 symsize = bfd_get_symtab_upper_bound (b);
917 symbols = (asymbol **) xmalloc (symsize);
918 nsyms = bfd_canonicalize_symtab (b, symbols);
920 for (i = 0; i < nsyms; i++)
922 if (memcmp(symbols[i]->name, "__head_",
923 sizeof ("__head_") - 1))
925 if (pe_dll_extra_pe_debug)
927 printf ("->%s\n", symbols[i]->name);
929 pe_data_import_dll = (char*) (symbols[i]->name +
930 sizeof ("__head_") - 1);
935 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
938 /* let's differentiate it somehow from defined */
939 undef->type = bfd_link_hash_defweak;
940 /* we replace original name with __imp_ prefixed, this
941 1) may trash memory 2) leads to duplicate symbol generation.
942 Still, IMHO it's better than having name poluted. */
943 undef->root.string = sym->root.string;
944 undef->u.def.value = sym->u.def.value;
945 undef->u.def.section = sym->u.def.section;
950 #endif /* DLL_SUPPORT */
954 struct bfd_hash_entry *h;
955 PTR string ATTRIBUTE_UNUSED;
957 if (pe_dll_extra_pe_debug)
959 printf("+%s\n",h->string);
966 gld_${EMULATION_NAME}_after_open ()
969 if (pe_dll_extra_pe_debug)
972 struct bfd_link_hash_entry *sym;
973 printf ("%s()\n", __FUNCTION__);
975 for (sym = link_info.hash->undefs; sym; sym=sym->next)
976 printf ("-%s\n", sym->root.string);
977 bfd_hash_traverse (&link_info.hash->table, pr_sym,NULL);
979 for (a = link_info.input_bfds; a; a = a->link_next)
981 printf("*%s\n",a->filename);
985 /* Pass the wacky PE command line options into the output bfd.
986 FIXME: This should be done via a function, rather than by
987 including an internal BFD header. */
989 if (coff_data (output_bfd) == NULL || coff_data (output_bfd)->pe == 0)
990 einfo (_("%F%P: PE operations on non PE file.\n"));
992 pe_data (output_bfd)->pe_opthdr = pe;
993 pe_data (output_bfd)->dll = init[DLLOFF].value;
996 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
997 pe_fixup_stdcalls ();
999 pe_find_data_imports ();
1001 pe_process_import_defs(output_bfd, &link_info);
1002 if (link_info.shared)
1003 pe_dll_build_sections (output_bfd, &link_info);
1005 #ifndef TARGET_IS_i386pe
1006 #ifndef TARGET_IS_armpe
1008 pe_exe_build_sections (output_bfd, &link_info);
1013 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1014 if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
1016 /* The arm backend needs special fields in the output hash structure.
1017 These will only be created if the output format is an arm format,
1018 hence we do not support linking and changing output formats at the
1019 same time. Use a link followed by objcopy to change output formats. */
1020 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1024 /* Find a BFD that can hold the interworking stubs. */
1025 LANG_FOR_EACH_INPUT_STATEMENT (is)
1027 if (bfd_arm_pe_get_bfd_for_interworking (is->the_bfd, & link_info))
1034 /* This next chunk of code tries to detect the case where you have
1035 two import libraries for the same DLL (specifically,
1036 symbolically linking libm.a and libc.a in cygwin to
1037 libcygwin.a). In those cases, it's possible for function
1038 thunks from the second implib to be used but without the
1039 head/tail objects, causing an improper import table. We detect
1040 those cases and rename the "other" import libraries to match
1041 the one the head/tail come from, so that the linker will sort
1042 things nicely and produce a valid import table. */
1044 LANG_FOR_EACH_INPUT_STATEMENT (is)
1046 if (is->the_bfd->my_archive)
1048 int idata2 = 0, reloc_count=0, is_imp = 0;
1051 /* See if this is an import library thunk. */
1052 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1054 if (strcmp (sec->name, ".idata\$2") == 0)
1056 if (strncmp (sec->name, ".idata\$", 7) == 0)
1058 reloc_count += sec->reloc_count;
1061 if (is_imp && !idata2 && reloc_count)
1063 /* It is, look for the reference to head and see if it's
1064 from our own library. */
1065 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1074 symsize = bfd_get_symtab_upper_bound (is->the_bfd);
1077 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1081 symbols = (asymbol **) xmalloc (symsize);
1082 symsize = bfd_canonicalize_symtab (is->the_bfd, symbols);
1085 einfo ("%X%P: unable to process symbols: %E");
1089 relocs = (arelent **) xmalloc ((size_t) relsize);
1090 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1095 einfo ("%X%P: unable to process relocs: %E");
1099 for (i = 0; i < nrelocs; i++)
1101 struct symbol_cache_entry *s;
1102 struct bfd_link_hash_entry * blhe;
1106 s = (relocs[i]->sym_ptr_ptr)[0];
1108 if (s->flags & BSF_LOCAL)
1111 /* Thunk section with reloc to another bfd. */
1112 blhe = bfd_link_hash_lookup (link_info.hash,
1114 false, false, true);
1117 || blhe->type != bfd_link_hash_defined)
1120 other_bfd = blhe->u.def.section->owner;
1122 if (strcmp (is->the_bfd->my_archive->filename,
1123 other_bfd->my_archive->filename) == 0)
1126 /* Rename this implib to match the other. */
1127 n = (char *) xmalloc (strlen (other_bfd->my_archive->filename) + 1);
1129 strcpy (n, other_bfd->my_archive->filename);
1131 is->the_bfd->my_archive->filename = n;
1135 /* Note - we do not free the symbols,
1136 they are now cached in the BFD. */
1146 lang_input_statement_type *is2;
1148 /* Careful - this is a shell script. Watch those dollar signs! */
1149 /* Microsoft import libraries have every member named the same,
1150 and not in the right order for us to link them correctly. We
1151 must detect these and rename the members so that they'll link
1152 correctly. There are three types of objects: the head, the
1153 thunks, and the sentinel(s). The head is easy; it's the one
1154 with idata2. We assume that the sentinels won't have relocs,
1155 and the thunks will. It's easier than checking the symbol
1156 table for external references. */
1157 LANG_FOR_EACH_INPUT_STATEMENT (is)
1159 if (is->the_bfd->my_archive)
1161 bfd *arch = is->the_bfd->my_archive;
1162 if (cur_arch != arch)
1167 is2 && is2->the_bfd->my_archive == arch;
1168 is2 = (lang_input_statement_type *)is2->next)
1170 if (strcmp (is->the_bfd->filename, is2->the_bfd->filename))
1177 int idata2 = 0, reloc_count=0;
1179 char *new_name, seq;
1181 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1183 if (strcmp (sec->name, ".idata\$2") == 0)
1185 reloc_count += sec->reloc_count;
1188 if (idata2) /* .idata2 is the TOC */
1190 else if (reloc_count > 0) /* thunks */
1195 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1196 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1197 is->the_bfd->filename = new_name;
1199 new_name = xmalloc (strlen (is->filename) + 3);
1200 sprintf (new_name, "%s.%c", is->filename, seq);
1201 is->filename = new_name;
1209 gld_${EMULATION_NAME}_before_allocation()
1211 #ifdef TARGET_IS_ppcpe
1212 /* Here we rummage through the found bfds to collect toc information */
1214 LANG_FOR_EACH_INPUT_STATEMENT (is)
1216 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1218 /* xgettext:c-format */
1219 einfo (_("Errors encountered processing file %s\n"), is->filename);
1224 /* We have seen it all. Allocate it, and carry on */
1225 ppc_allocate_toc_section (&link_info);
1226 #endif /* TARGET_IS_ppcpe */
1228 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1229 /* FIXME: we should be able to set the size of the interworking stub
1232 Here we rummage through the found bfds to collect glue
1233 information. FIXME: should this be based on a command line
1234 option? krk@cygnus.com */
1236 LANG_FOR_EACH_INPUT_STATEMENT (is)
1238 if (! bfd_arm_pe_process_before_allocation
1239 (is->the_bfd, & link_info, support_old_code))
1241 /* xgettext:c-format */
1242 einfo (_("Errors encountered processing file %s for interworking"),
1248 /* We have seen it all. Allocate it, and carry on */
1249 bfd_arm_pe_allocate_interworking_sections (& link_info);
1250 #endif /* TARGET_IS_armpe */
1254 /* This is called when an input file isn't recognized as a BFD. We
1255 check here for .DEF files and pull them in automatically. */
1258 saw_option(char *option)
1261 for (i=0; init[i].ptr; i++)
1262 if (strcmp (init[i].symbol, option) == 0)
1263 return init[i].inited;
1266 #endif /* DLL_SUPPORT */
1269 gld_${EMULATION_NAME}_unrecognized_file(entry)
1270 lang_input_statement_type *entry ATTRIBUTE_UNUSED;
1273 const char *ext = entry->filename + strlen (entry->filename) - 4;
1275 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1277 if (pe_def_file == 0)
1278 pe_def_file = def_file_empty ();
1279 def_file_parse (entry->filename, pe_def_file);
1282 int i, buflen=0, len;
1284 for (i=0; i<pe_def_file->num_exports; i++)
1286 len = strlen(pe_def_file->exports[i].internal_name);
1290 buf = (char *) xmalloc (buflen);
1291 for (i=0; i<pe_def_file->num_exports; i++)
1293 struct bfd_link_hash_entry *h;
1294 sprintf(buf, "_%s", pe_def_file->exports[i].internal_name);
1296 h = bfd_link_hash_lookup (link_info.hash, buf, true, true, true);
1297 if (h == (struct bfd_link_hash_entry *) NULL)
1298 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1299 if (h->type == bfd_link_hash_new)
1301 h->type = bfd_link_hash_undefined;
1302 h->u.undef.abfd = NULL;
1303 bfd_link_add_undef (link_info.hash, h);
1308 /* def_file_print (stdout, pe_def_file); */
1309 if (pe_def_file->is_dll == 1)
1310 link_info.shared = 1;
1312 if (pe_def_file->base_address != (bfd_vma)(-1))
1315 pe_data (output_bfd)->pe_opthdr.ImageBase =
1316 init[IMAGEBASEOFF].value = pe_def_file->base_address;
1317 init[IMAGEBASEOFF].inited = 1;
1318 if (image_base_statement)
1319 image_base_statement->exp =
1320 exp_assop ('=', "__image_base__", exp_intop (pe.ImageBase));
1324 /* Not sure if these *should* be set */
1325 if (pe_def_file->version_major != -1)
1327 pe.MajorImageVersion = pe_def_file->version_major;
1328 pe.MinorImageVersion = pe_def_file->version_minor;
1331 if (pe_def_file->stack_reserve != -1
1332 && ! saw_option ("__size_of_stack_reserve__"))
1334 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1335 if (pe_def_file->stack_commit != -1)
1336 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1338 if (pe_def_file->heap_reserve != -1
1339 && ! saw_option ("__size_of_heap_reserve__"))
1341 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1342 if (pe_def_file->heap_commit != -1)
1343 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1354 gld_${EMULATION_NAME}_recognized_file(entry)
1355 lang_input_statement_type *entry ATTRIBUTE_UNUSED;
1358 #ifdef TARGET_IS_i386pe
1359 pe_dll_id_target ("pei-i386");
1361 #ifdef TARGET_IS_shpe
1362 pe_dll_id_target ("pei-shl");
1364 #ifdef TARGET_IS_mipspe
1365 pe_dll_id_target ("pei-mips");
1367 #ifdef TARGET_IS_armpe
1368 pe_dll_id_target ("pei-arm-little");
1370 if (bfd_get_format (entry->the_bfd) == bfd_object)
1372 const char *ext = entry->filename + strlen (entry->filename) - 4;
1373 if (strcmp (ext, ".dll") == 0 || strcmp (ext, ".DLL") == 0)
1374 return pe_implied_import_dll (entry->filename);
1381 gld_${EMULATION_NAME}_finish ()
1383 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1384 struct bfd_link_hash_entry * h;
1386 if (thumb_entry_symbol != NULL)
1388 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true);
1390 if (h != (struct bfd_link_hash_entry *) NULL
1391 && (h->type == bfd_link_hash_defined
1392 || h->type == bfd_link_hash_defweak)
1393 && h->u.def.section->output_section != NULL)
1395 static char buffer[32];
1398 /* Special procesing is required for a Thumb entry symbol. The
1399 bottom bit of its address must be set. */
1400 val = (h->u.def.value
1401 + bfd_get_section_vma (output_bfd,
1402 h->u.def.section->output_section)
1403 + h->u.def.section->output_offset);
1407 /* Now convert this value into a string and store it in entry_symbol
1408 where the lang_finish() function will pick it up. */
1412 sprintf_vma (buffer + 2, val);
1414 if (entry_symbol != NULL && entry_from_cmdline)
1415 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1416 thumb_entry_symbol, entry_symbol);
1417 entry_symbol = buffer;
1420 einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
1422 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) */
1425 if (link_info.shared)
1427 pe_dll_fill_sections (output_bfd, &link_info);
1428 if (pe_implib_filename)
1429 pe_dll_generate_implib (pe_def_file, pe_implib_filename);
1431 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1432 /* ARM doesn't need relocs. */
1435 pe_exe_fill_sections (output_bfd, &link_info);
1439 if (pe_out_def_filename)
1440 pe_dll_generate_def_file (pe_out_def_filename);
1441 #endif /* DLL_SUPPORT */
1443 /* I don't know where .idata gets set as code, but it shouldn't be */
1445 asection *asec = bfd_get_section_by_name (output_bfd, ".idata");
1448 asec->flags &= ~SEC_CODE;
1449 asec->flags |= SEC_DATA;
1455 /* Find the last output section before given output statement.
1456 Used by place_orphan. */
1459 output_prev_sec_find (os)
1460 lang_output_section_statement_type *os;
1462 asection *s = (asection *) NULL;
1463 lang_statement_union_type *u;
1464 lang_output_section_statement_type *lookup;
1466 for (u = lang_output_section_statement.head;
1467 u != (lang_statement_union_type *) NULL;
1470 lookup = &u->output_section_statement;
1474 if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
1475 s = lookup->bfd_section;
1481 /* Place an orphan section.
1483 We use this to put sections in a reasonable place in the file, and
1484 to ensure that they are aligned as required.
1486 We handle grouped sections here as well. A section named .foo$nn
1487 goes into the output section .foo. All grouped sections are sorted
1490 Grouped sections for the default sections are handled by the
1491 default linker script using wildcards, and are sorted by
1496 lang_output_section_statement_type *os;
1498 lang_statement_union_type **stmt;
1503 gld_${EMULATION_NAME}_place_orphan (file, s)
1504 lang_input_statement_type *file;
1507 const char *secname;
1508 char *hold_section_name;
1509 char *dollar = NULL;
1510 const char *ps = NULL;
1511 lang_output_section_statement_type *os;
1512 lang_statement_list_type add_child;
1514 secname = bfd_get_section_name (s->owner, s);
1516 /* Look through the script to see where to place this section. */
1518 hold_section_name = xstrdup (secname);
1519 if (!link_info.relocateable)
1521 dollar = strchr (hold_section_name, '$');
1526 os = lang_output_section_find (hold_section_name);
1528 lang_list_init (&add_child);
1531 && (os->bfd_section == NULL
1532 || ((s->flags ^ os->bfd_section->flags)
1533 & (SEC_LOAD | SEC_ALLOC)) == 0))
1535 /* We already have an output section statement with this
1536 name, and its bfd section, if any, has compatible flags. */
1537 lang_add_section (&add_child, s, os, file);
1541 struct orphan_save *place;
1542 static struct orphan_save hold_text;
1543 static struct orphan_save hold_rdata;
1544 static struct orphan_save hold_data;
1545 static struct orphan_save hold_bss;
1547 lang_statement_list_type *old;
1548 lang_statement_list_type add;
1549 etree_type *address;
1551 /* Try to put the new output section in a reasonable place based
1552 on the section name and section flags. */
1553 #define HAVE_SECTION(hold, name) \
1554 (hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL)
1557 if ((s->flags & SEC_ALLOC) == 0)
1559 else if ((s->flags & SEC_HAS_CONTENTS) == 0
1560 && HAVE_SECTION (hold_bss, ".bss"))
1562 else if ((s->flags & SEC_READONLY) == 0
1563 && HAVE_SECTION (hold_data, ".data"))
1565 else if ((s->flags & SEC_CODE) == 0
1566 && (s->flags & SEC_READONLY) != 0
1567 && HAVE_SECTION (hold_rdata, ".rdata"))
1568 place = &hold_rdata;
1569 else if ((s->flags & SEC_READONLY) != 0
1570 && HAVE_SECTION (hold_text, ".text"))
1575 /* Choose a unique name for the section. This will be needed if
1576 the same section name appears in the input file with
1577 different loadable or allocatable characteristics. */
1578 outsecname = xstrdup (hold_section_name);
1579 if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
1585 len = strlen (outsecname);
1586 newname = xmalloc (len + 5);
1587 strcpy (newname, outsecname);
1591 sprintf (newname + len, "%d", i);
1594 while (bfd_get_section_by_name (output_bfd, newname) != NULL);
1597 outsecname = newname;
1600 /* Start building a list of statements for this section. */
1603 lang_list_init (stat_ptr);
1605 if (config.build_constructors)
1607 /* If the name of the section is representable in C, then create
1608 symbols to mark the start and the end of the section. */
1609 for (ps = outsecname; *ps != '\0'; ps++)
1610 if (! isalnum ((unsigned char) *ps) && *ps != '_')
1615 etree_type *e_align;
1617 symname = (char *) xmalloc (ps - outsecname + sizeof "___start_");
1618 sprintf (symname, "___start_%s", outsecname);
1619 e_align = exp_unop (ALIGN_K,
1620 exp_intop ((bfd_vma) 1 << s->alignment_power));
1621 lang_add_assignment (exp_assop ('=', symname, e_align));
1625 if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
1626 address = exp_intop ((bfd_vma) 0);
1629 /* All sections in an executable must be aligned to a page
1631 address = exp_unop (ALIGN_K,
1632 exp_nameop (NAME, "__section_alignment__"));
1635 os = lang_enter_output_section_statement (outsecname, address, 0,
1637 (etree_type *) NULL,
1638 (etree_type *) NULL,
1639 (etree_type *) NULL);
1641 lang_add_section (&add_child, s, os, file);
1643 lang_leave_output_section_statement
1644 ((bfd_vma) 0, "*default*",
1645 (struct lang_output_section_phdr_list *) NULL, "*default*");
1647 if (config.build_constructors && *ps == '\0')
1651 /* lang_leave_ouput_section_statement resets stat_ptr. Put
1652 stat_ptr back where we want it. */
1656 symname = (char *) xmalloc (ps - outsecname + sizeof "___stop_");
1657 sprintf (symname, "___stop_%s", outsecname);
1658 lang_add_assignment (exp_assop ('=', symname,
1659 exp_nameop (NAME, ".")));
1666 asection *snew, **pps;
1668 snew = os->bfd_section;
1670 /* Shuffle the bfd section list to make the output file look
1671 neater. This is really only cosmetic. */
1672 if (place->section == NULL)
1674 asection *bfd_section = place->os->bfd_section;
1676 /* If the output statement hasn't been used to place
1677 any input sections (and thus doesn't have an output
1678 bfd_section), look for the closest prior output statement
1679 having an output section. */
1680 if (bfd_section == NULL)
1681 bfd_section = output_prev_sec_find (place->os);
1683 if (bfd_section != NULL && bfd_section != snew)
1684 place->section = &bfd_section->next;
1687 if (place->section != NULL)
1689 /* Unlink the section. */
1690 for (pps = &output_bfd->sections;
1692 pps = &(*pps)->next)
1694 bfd_section_list_remove (output_bfd, pps);
1696 /* Now tack it on to the "place->os" section list. */
1697 bfd_section_list_insert (output_bfd, place->section, snew);
1700 /* Save the end of this list. Further ophans of this type will
1701 follow the one we've just added. */
1702 place->section = &snew->next;
1704 /* The following is non-cosmetic. We try to put the output
1705 statements in some sort of reasonable order here, because
1706 they determine the final load addresses of the orphan
1707 sections. In addition, placing output statements in the
1708 wrong order may require extra segments. For instance,
1709 given a typical situation of all read-only sections placed
1710 in one segment and following that a segment containing all
1711 the read-write sections, we wouldn't want to place an orphan
1712 read/write section before or amongst the read-only ones. */
1713 if (add.head != NULL)
1715 if (place->stmt == NULL)
1717 /* Put the new statement list right at the head. */
1718 *add.tail = place->os->header.next;
1719 place->os->header.next = add.head;
1723 /* Put it after the last orphan statement we added. */
1724 *add.tail = *place->stmt;
1725 *place->stmt = add.head;
1728 /* Fix the global list pointer if we happened to tack our
1729 new list at the tail. */
1730 if (*old->tail == add.head)
1731 old->tail = add.tail;
1733 /* Save the end of this list. */
1734 place->stmt = add.tail;
1740 lang_statement_union_type **pl = &os->children.head;
1744 boolean found_dollar;
1746 /* The section name has a '$'. Sort it with the other '$'
1749 found_dollar = false;
1750 for ( ; *pl != NULL; pl = &(*pl)->header.next)
1752 lang_input_section_type *ls;
1755 if ((*pl)->header.type != lang_input_section_enum)
1758 ls = &(*pl)->input_section;
1760 lname = bfd_get_section_name (ls->ifile->the_bfd, ls->section);
1761 if (strchr (lname, '$') == NULL)
1768 found_dollar = true;
1769 if (strcmp (secname, lname) < 0)
1775 if (add_child.head != NULL)
1777 add_child.head->header.next = *pl;
1778 *pl = add_child.head;
1782 free (hold_section_name);
1788 gld_${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
1789 const char * arch ATTRIBUTE_UNUSED;
1790 search_dirs_type * search;
1791 lang_input_statement_type * entry;
1793 const char * filename;
1796 if (! entry->is_archive)
1799 filename = entry->filename;
1801 string = (char *) xmalloc (strlen (search->name)
1803 + sizeof "/lib.a.dll"
1805 + (pe_dll_search_prefix ? strlen (pe_dll_search_prefix) : 0)
1809 /* Try "libfoo.dll.a" first (preferred explicit import library for dll's */
1810 sprintf (string, "%s/lib%s.dll.a", search->name, filename);
1812 if (! ldfile_try_open_bfd (string, entry))
1814 /* Try "foo.dll.a" next (alternate explicit import library for dll's */
1815 sprintf (string, "%s/%s.dll.a", search->name, filename);
1816 if (! ldfile_try_open_bfd (string, entry))
1819 Try libfoo.a next. Normally, this would be interpreted as a static
1820 library, but it *could* be an import library. For backwards compatibility,
1821 libfoo.a needs to ==precede== libfoo.dll and foo.dll in the search,
1822 or sometimes errors occur when building legacy packages.
1824 Putting libfoo.a here means that in a failure case (i.e. the library
1825 -lfoo is not found) we will search for libfoo.a twice before
1826 giving up -- once here, and once when searching for a "static" lib.
1829 /* Try "libfoo.a" (import lib, or static lib, but must
1830 take precedence over dll's) */
1831 sprintf (string, "%s/lib%s.a", search->name, filename);
1832 if (! ldfile_try_open_bfd (string, entry))
1835 if (pe_dll_search_prefix)
1837 /* Try "<prefix>foo.dll" (preferred dll name, if specified) */
1838 sprintf (string, "%s/%s%s.dll", search->name, pe_dll_search_prefix, filename);
1839 if (! ldfile_try_open_bfd (string, entry))
1841 /* Try "libfoo.dll" (default preferred dll name) */
1842 sprintf (string, "%s/lib%s.dll", search->name, filename);
1843 if (! ldfile_try_open_bfd (string, entry))
1845 /* Finally, try "foo.dll" (alternate dll name) */
1846 sprintf (string, "%s/%s.dll", search->name, filename);
1847 if (! ldfile_try_open_bfd (string, entry))
1855 else /* pe_dll_search_prefix not specified */
1858 /* Try "libfoo.dll" (preferred dll name) */
1859 sprintf (string, "%s/lib%s.dll", search->name, filename);
1860 if (! ldfile_try_open_bfd (string, entry))
1862 /* Finally, try "foo.dll" (alternate dll name) */
1863 sprintf (string, "%s/%s.dll", search->name, filename);
1864 if (! ldfile_try_open_bfd (string, entry))
1875 entry->filename = string;
1881 gld_${EMULATION_NAME}_find_potential_libraries (name, entry)
1883 lang_input_statement_type * entry;
1885 return ldfile_open_file_search (name, entry, "", ".lib");
1889 gld_${EMULATION_NAME}_get_script(isfile)
1892 # Scripts compiled in.
1893 # sed commands to quote an ld script as a C string.
1894 sc="-f stringify.sed"
1896 cat >>e${EMULATION_NAME}.c <<EOF
1900 if (link_info.relocateable == true && config.build_constructors == true)
1903 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1904 echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
1905 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1906 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1907 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1908 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1909 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1910 echo ' ; else return' >> e${EMULATION_NAME}.c
1911 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1912 echo '; }' >> e${EMULATION_NAME}.c
1914 cat >>e${EMULATION_NAME}.c <<EOF
1917 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1919 gld_${EMULATION_NAME}_before_parse,
1922 gld_${EMULATION_NAME}_after_parse,
1923 gld_${EMULATION_NAME}_after_open,
1924 after_allocation_default,
1925 set_output_arch_default,
1926 ldemul_default_target,
1927 gld_${EMULATION_NAME}_before_allocation,
1928 gld_${EMULATION_NAME}_get_script,
1929 "${EMULATION_NAME}",
1931 gld_${EMULATION_NAME}_finish, /* finish */
1932 NULL, /* create output section statements */
1933 gld_${EMULATION_NAME}_open_dynamic_archive,
1934 gld_${EMULATION_NAME}_place_orphan,
1935 gld_${EMULATION_NAME}_set_symbols,
1936 gld_${EMULATION_NAME}_parse_args,
1937 gld_${EMULATION_NAME}_unrecognized_file,
1938 gld_${EMULATION_NAME}_list_options,
1939 gld_${EMULATION_NAME}_recognized_file,
1940 gld_${EMULATION_NAME}_find_potential_libraries,
1941 NULL /* new_vers_pattern */