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. */
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 = ${INITIAL_SYMBOL_CHAR};
435 if (*initial_symbol_char == '\0')
441 /* lang_add_entry expects its argument to be permanently
442 allocated, so we don't free this string. */
443 alc_entry = xmalloc (strlen (initial_symbol_char)
444 + strlen (v[i].entry)
446 strcpy (alc_entry, initial_symbol_char);
447 strcat (alc_entry, v[i].entry);
451 lang_add_entry (entry, 1);
457 einfo (_("%P%F: invalid subsystem type %s\n"), optarg);
469 set_pe_name (name, strtoul (optarg, &end, 0));
472 einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg);
478 set_pe_stack_heap (resname, comname)
482 set_pe_value (resname);
487 set_pe_value (comname);
490 einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg);
496 gld_${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_${EMULATION_NAME}_set_symbols ()
678 /* Run through and invent symbols for all the
679 names and insert the defaults. */
681 lang_statement_list_type *save;
683 if (!init[IMAGEBASEOFF].inited)
685 if (link_info.relocateable)
686 init[IMAGEBASEOFF].value = 0;
687 else if (init[DLLOFF].value || link_info.shared)
689 init[IMAGEBASEOFF].value = (pe_enable_auto_image_base) ?
690 compute_dll_image_base (output_filename) : NT_DLL_IMAGE_BASE;
692 init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE;
695 init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE;
698 /* Don't do any symbol assignments if this is a relocateable link. */
699 if (link_info.relocateable)
702 /* Glue the assignments into the abs section */
705 stat_ptr = &(abs_output_section->children);
707 for (j = 0; init[j].ptr; j++)
709 long val = init[j].value;
710 lang_assignment_statement_type *rv;
711 rv = lang_add_assignment (exp_assop ('=' ,init[j].symbol, exp_intop (val)));
712 if (init[j].size == sizeof(short))
713 *(short *)init[j].ptr = val;
714 else if (init[j].size == sizeof(int))
715 *(int *)init[j].ptr = val;
716 else if (init[j].size == sizeof(long))
717 *(long *)init[j].ptr = val;
718 /* This might be a long long or other special type. */
719 else if (init[j].size == sizeof(bfd_vma))
720 *(bfd_vma *)init[j].ptr = val;
722 if (j == IMAGEBASEOFF)
723 image_base_statement = rv;
725 /* Restore the pointer. */
728 if (pe.FileAlignment >
731 einfo (_("%P: warning, file alignment > section alignment.\n"));
735 /* This is called after the linker script and the command line options
739 gld_${EMULATION_NAME}_after_parse ()
741 /* The Windows libraries are designed for the linker to treat the
742 entry point as an undefined symbol. Otherwise, the .obj that
743 defines mainCRTStartup is brought in because it is the first
744 encountered in libc.lib and it has other symbols in it which will
745 be pulled in by the link process. To avoid this, we act as
746 though the user specified -u with the entry point symbol.
748 This function is called after the linker script and command line
749 options have been read, so at this point we know the right entry
750 point. This function is called before the input files are
751 opened, so registering the symbol as undefined will make a
754 if (! link_info.relocateable && entry_symbol != NULL)
755 ldlang_add_undef (entry_symbol);
758 /* pe-dll.c directly accesses pe_data_import_dll,
759 so it must be defined outside of #ifdef DLL_SUPPORT.
760 Note - this variable is deliberately not initialised.
761 This allows it to be treated as a common varaible, and only
762 exist in one incarnation in a multiple target enabled linker. */
763 char * pe_data_import_dll;
766 static struct bfd_link_hash_entry *pe_undef_found_sym;
769 pe_undef_cdecl_match (h, string)
770 struct bfd_link_hash_entry *h;
774 sl = strlen (string); /* silence compiler warning */
775 if (h->type == bfd_link_hash_defined
776 && strncmp (h->root.string, string, sl) == 0
777 && h->root.string[sl] == '@')
779 pe_undef_found_sym = h;
788 static int gave_warning_message = 0;
789 struct bfd_link_hash_entry *undef, *sym;
791 if (pe_dll_extra_pe_debug)
793 printf ("%s\n", __FUNCTION__);
796 for (undef = link_info.hash->undefs; undef; undef=undef->next)
797 if (undef->type == bfd_link_hash_undefined)
799 at = strchr (undef->root.string, '@');
802 /* The symbol is a stdcall symbol, so let's look for a cdecl
803 symbol with the same name and resolve to that */
804 char *cname = xstrdup (undef->root.string);
805 at = strchr (cname, '@');
807 sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1);
808 if (sym && sym->type == bfd_link_hash_defined)
810 undef->type = bfd_link_hash_defined;
811 undef->u.def.value = sym->u.def.value;
812 undef->u.def.section = sym->u.def.section;
813 if (pe_enable_stdcall_fixup == -1)
815 einfo (_("Warning: resolving %s by linking to %s\n"),
816 undef->root.string, cname);
817 if (! gave_warning_message)
819 gave_warning_message = 1;
820 einfo(_("Use --enable-stdcall-fixup to disable these warnings\n"));
821 einfo(_("Use --disable-stdcall-fixup to disable these fixups\n"));
828 /* The symbol is a cdecl symbol, so we look for stdcall
829 symbols - which means scanning the whole symbol table */
830 pe_undef_found_sym = 0;
831 bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match,
832 (PTR) undef->root.string);
833 sym = pe_undef_found_sym;
836 undef->type = bfd_link_hash_defined;
837 undef->u.def.value = sym->u.def.value;
838 undef->u.def.section = sym->u.def.section;
839 if (pe_enable_stdcall_fixup == -1)
841 einfo (_("Warning: resolving %s by linking to %s\n"),
842 undef->root.string, sym->root.string);
843 if (! gave_warning_message)
845 gave_warning_message = 1;
846 einfo(_("Use --enable-stdcall-fixup to disable these warnings\n"));
847 einfo(_("Use --disable-stdcall-fixup to disable these fixups\n"));
856 make_import_fixup (rel, s)
860 struct symbol_cache_entry *sym = *rel->sym_ptr_ptr;
862 if (pe_dll_extra_pe_debug)
864 printf ("arelent: %s@%#lx: add=%li\n", sym->name,
865 (long) rel->address, (long) rel->addend);
870 if (!bfd_get_section_contents(s->owner, s, &addend, rel->address, sizeof(addend)))
872 einfo (_("%C: Cannot get section contents - auto-import exception\n"),
873 s->owner, s, rel->address);
877 pe_create_import_fixup (rel);
880 einfo (_("%C: variable '%T' can't be auto-imported. Please read the documentation for ld's --enable-auto-import for details.\n"),
881 s->owner, s, rel->address, sym->name);
890 pe_find_data_imports ()
892 struct bfd_link_hash_entry *undef, *sym;
893 for (undef = link_info.hash->undefs; undef; undef=undef->next)
895 if (undef->type == bfd_link_hash_undefined)
897 /* C++ symbols are *long* */
899 if (pe_dll_extra_pe_debug)
901 printf ("%s:%s\n", __FUNCTION__, undef->root.string);
903 sprintf (buf, "__imp_%s", undef->root.string);
905 sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
906 if (sym && sym->type == bfd_link_hash_defined)
908 einfo (_("Warning: resolving %s by linking to %s (auto-import)\n"),
909 undef->root.string, buf);
911 bfd *b = sym->u.def.section->owner;
913 int nsyms, symsize, i;
915 symsize = bfd_get_symtab_upper_bound (b);
916 symbols = (asymbol **) xmalloc (symsize);
917 nsyms = bfd_canonicalize_symtab (b, symbols);
919 for (i = 0; i < nsyms; i++)
921 if (memcmp(symbols[i]->name, "__head_",
922 sizeof ("__head_") - 1))
924 if (pe_dll_extra_pe_debug)
926 printf ("->%s\n", symbols[i]->name);
928 pe_data_import_dll = (char*) (symbols[i]->name +
929 sizeof ("__head_") - 1);
934 pe_walk_relocs_of_symbol (&link_info, undef->root.string,
937 /* let's differentiate it somehow from defined */
938 undef->type = bfd_link_hash_defweak;
939 /* we replace original name with __imp_ prefixed, this
940 1) may trash memory 2) leads to duplicate symbol generation.
941 Still, IMHO it's better than having name poluted. */
942 undef->root.string = sym->root.string;
943 undef->u.def.value = sym->u.def.value;
944 undef->u.def.section = sym->u.def.section;
949 #endif /* DLL_SUPPORT */
953 struct bfd_hash_entry *h;
954 PTR string ATTRIBUTE_UNUSED;
956 if (pe_dll_extra_pe_debug)
958 printf("+%s\n",h->string);
965 gld_${EMULATION_NAME}_after_open ()
968 if (pe_dll_extra_pe_debug)
971 struct bfd_link_hash_entry *sym;
972 printf ("%s()\n", __FUNCTION__);
974 for (sym = link_info.hash->undefs; sym; sym=sym->next)
975 printf ("-%s\n", sym->root.string);
976 bfd_hash_traverse (&link_info.hash->table, pr_sym,NULL);
978 for (a = link_info.input_bfds; a; a = a->link_next)
980 printf("*%s\n",a->filename);
984 /* Pass the wacky PE command line options into the output bfd.
985 FIXME: This should be done via a function, rather than by
986 including an internal BFD header. */
988 if (coff_data (output_bfd) == NULL || coff_data (output_bfd)->pe == 0)
989 einfo (_("%F%P: PE operations on non PE file.\n"));
991 pe_data (output_bfd)->pe_opthdr = pe;
992 pe_data (output_bfd)->dll = init[DLLOFF].value;
995 if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */
996 pe_fixup_stdcalls ();
998 pe_find_data_imports ();
1000 pe_process_import_defs(output_bfd, &link_info);
1001 if (link_info.shared)
1002 pe_dll_build_sections (output_bfd, &link_info);
1004 #ifndef TARGET_IS_i386pe
1005 #ifndef TARGET_IS_armpe
1007 pe_exe_build_sections (output_bfd, &link_info);
1012 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1013 if (strstr (bfd_get_target (output_bfd), "arm") == NULL)
1015 /* The arm backend needs special fields in the output hash structure.
1016 These will only be created if the output format is an arm format,
1017 hence we do not support linking and changing output formats at the
1018 same time. Use a link followed by objcopy to change output formats. */
1019 einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n");
1023 /* Find a BFD that can hold the interworking stubs. */
1024 LANG_FOR_EACH_INPUT_STATEMENT (is)
1026 if (bfd_arm_pe_get_bfd_for_interworking (is->the_bfd, & link_info))
1033 /* This next chunk of code tries to detect the case where you have
1034 two import libraries for the same DLL (specifically,
1035 symbolically linking libm.a and libc.a in cygwin to
1036 libcygwin.a). In those cases, it's possible for function
1037 thunks from the second implib to be used but without the
1038 head/tail objects, causing an improper import table. We detect
1039 those cases and rename the "other" import libraries to match
1040 the one the head/tail come from, so that the linker will sort
1041 things nicely and produce a valid import table. */
1043 LANG_FOR_EACH_INPUT_STATEMENT (is)
1045 if (is->the_bfd->my_archive)
1047 int idata2 = 0, reloc_count=0, is_imp = 0;
1050 /* See if this is an import library thunk. */
1051 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1053 if (strcmp (sec->name, ".idata\$2") == 0)
1055 if (strncmp (sec->name, ".idata\$", 7) == 0)
1057 reloc_count += sec->reloc_count;
1060 if (is_imp && !idata2 && reloc_count)
1062 /* It is, look for the reference to head and see if it's
1063 from our own library. */
1064 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1073 symsize = bfd_get_symtab_upper_bound (is->the_bfd);
1076 relsize = bfd_get_reloc_upper_bound (is->the_bfd, sec);
1080 symbols = (asymbol **) xmalloc (symsize);
1081 symsize = bfd_canonicalize_symtab (is->the_bfd, symbols);
1084 einfo ("%X%P: unable to process symbols: %E");
1088 relocs = (arelent **) xmalloc ((size_t) relsize);
1089 nrelocs = bfd_canonicalize_reloc (is->the_bfd, sec,
1094 einfo ("%X%P: unable to process relocs: %E");
1098 for (i = 0; i < nrelocs; i++)
1100 struct symbol_cache_entry *s;
1101 struct bfd_link_hash_entry * blhe;
1105 s = (relocs[i]->sym_ptr_ptr)[0];
1107 if (s->flags & BSF_LOCAL)
1110 /* Thunk section with reloc to another bfd. */
1111 blhe = bfd_link_hash_lookup (link_info.hash,
1113 false, false, true);
1116 || blhe->type != bfd_link_hash_defined)
1119 other_bfd = blhe->u.def.section->owner;
1121 if (strcmp (is->the_bfd->my_archive->filename,
1122 other_bfd->my_archive->filename) == 0)
1125 /* Rename this implib to match the other. */
1126 n = (char *) xmalloc (strlen (other_bfd->my_archive->filename) + 1);
1128 strcpy (n, other_bfd->my_archive->filename);
1130 is->the_bfd->my_archive->filename = n;
1134 /* Note - we do not free the symbols,
1135 they are now cached in the BFD. */
1145 lang_input_statement_type *is2;
1147 /* Careful - this is a shell script. Watch those dollar signs! */
1148 /* Microsoft import libraries have every member named the same,
1149 and not in the right order for us to link them correctly. We
1150 must detect these and rename the members so that they'll link
1151 correctly. There are three types of objects: the head, the
1152 thunks, and the sentinel(s). The head is easy; it's the one
1153 with idata2. We assume that the sentinels won't have relocs,
1154 and the thunks will. It's easier than checking the symbol
1155 table for external references. */
1156 LANG_FOR_EACH_INPUT_STATEMENT (is)
1158 if (is->the_bfd->my_archive)
1160 bfd *arch = is->the_bfd->my_archive;
1161 if (cur_arch != arch)
1166 is2 && is2->the_bfd->my_archive == arch;
1167 is2 = (lang_input_statement_type *)is2->next)
1169 if (strcmp (is->the_bfd->filename, is2->the_bfd->filename))
1176 int idata2 = 0, reloc_count=0;
1178 char *new_name, seq;
1180 for (sec = is->the_bfd->sections; sec; sec = sec->next)
1182 if (strcmp (sec->name, ".idata\$2") == 0)
1184 reloc_count += sec->reloc_count;
1187 if (idata2) /* .idata2 is the TOC */
1189 else if (reloc_count > 0) /* thunks */
1194 new_name = xmalloc (strlen (is->the_bfd->filename) + 3);
1195 sprintf (new_name, "%s.%c", is->the_bfd->filename, seq);
1196 is->the_bfd->filename = new_name;
1198 new_name = xmalloc (strlen (is->filename) + 3);
1199 sprintf (new_name, "%s.%c", is->filename, seq);
1200 is->filename = new_name;
1208 gld_${EMULATION_NAME}_before_allocation()
1210 #ifdef TARGET_IS_ppcpe
1211 /* Here we rummage through the found bfds to collect toc information */
1213 LANG_FOR_EACH_INPUT_STATEMENT (is)
1215 if (!ppc_process_before_allocation (is->the_bfd, &link_info))
1217 /* xgettext:c-format */
1218 einfo (_("Errors encountered processing file %s\n"), is->filename);
1223 /* We have seen it all. Allocate it, and carry on */
1224 ppc_allocate_toc_section (&link_info);
1225 #endif /* TARGET_IS_ppcpe */
1227 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1228 /* FIXME: we should be able to set the size of the interworking stub
1231 Here we rummage through the found bfds to collect glue
1232 information. FIXME: should this be based on a command line
1233 option? krk@cygnus.com */
1235 LANG_FOR_EACH_INPUT_STATEMENT (is)
1237 if (! bfd_arm_pe_process_before_allocation
1238 (is->the_bfd, & link_info, support_old_code))
1240 /* xgettext:c-format */
1241 einfo (_("Errors encountered processing file %s for interworking"),
1247 /* We have seen it all. Allocate it, and carry on */
1248 bfd_arm_pe_allocate_interworking_sections (& link_info);
1249 #endif /* TARGET_IS_armpe */
1253 /* This is called when an input file isn't recognized as a BFD. We
1254 check here for .DEF files and pull them in automatically. */
1257 saw_option(char *option)
1260 for (i=0; init[i].ptr; i++)
1261 if (strcmp (init[i].symbol, option) == 0)
1262 return init[i].inited;
1265 #endif /* DLL_SUPPORT */
1268 gld_${EMULATION_NAME}_unrecognized_file(entry)
1269 lang_input_statement_type *entry ATTRIBUTE_UNUSED;
1272 const char *ext = entry->filename + strlen (entry->filename) - 4;
1274 if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0)
1276 if (pe_def_file == 0)
1277 pe_def_file = def_file_empty ();
1278 def_file_parse (entry->filename, pe_def_file);
1281 int i, buflen=0, len;
1283 for (i=0; i<pe_def_file->num_exports; i++)
1285 len = strlen(pe_def_file->exports[i].internal_name);
1289 buf = (char *) xmalloc (buflen);
1290 for (i=0; i<pe_def_file->num_exports; i++)
1292 struct bfd_link_hash_entry *h;
1293 sprintf(buf, "_%s", pe_def_file->exports[i].internal_name);
1295 h = bfd_link_hash_lookup (link_info.hash, buf, true, true, true);
1296 if (h == (struct bfd_link_hash_entry *) NULL)
1297 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1298 if (h->type == bfd_link_hash_new)
1300 h->type = bfd_link_hash_undefined;
1301 h->u.undef.abfd = NULL;
1302 bfd_link_add_undef (link_info.hash, h);
1307 /* def_file_print (stdout, pe_def_file); */
1308 if (pe_def_file->is_dll == 1)
1309 link_info.shared = 1;
1311 if (pe_def_file->base_address != (bfd_vma)(-1))
1314 pe_data (output_bfd)->pe_opthdr.ImageBase =
1315 init[IMAGEBASEOFF].value = pe_def_file->base_address;
1316 init[IMAGEBASEOFF].inited = 1;
1317 if (image_base_statement)
1318 image_base_statement->exp =
1319 exp_assop ('=', "__image_base__", exp_intop (pe.ImageBase));
1323 /* Not sure if these *should* be set */
1324 if (pe_def_file->version_major != -1)
1326 pe.MajorImageVersion = pe_def_file->version_major;
1327 pe.MinorImageVersion = pe_def_file->version_minor;
1330 if (pe_def_file->stack_reserve != -1
1331 && ! saw_option ("__size_of_stack_reserve__"))
1333 pe.SizeOfStackReserve = pe_def_file->stack_reserve;
1334 if (pe_def_file->stack_commit != -1)
1335 pe.SizeOfStackCommit = pe_def_file->stack_commit;
1337 if (pe_def_file->heap_reserve != -1
1338 && ! saw_option ("__size_of_heap_reserve__"))
1340 pe.SizeOfHeapReserve = pe_def_file->heap_reserve;
1341 if (pe_def_file->heap_commit != -1)
1342 pe.SizeOfHeapCommit = pe_def_file->heap_commit;
1353 gld_${EMULATION_NAME}_recognized_file(entry)
1354 lang_input_statement_type *entry ATTRIBUTE_UNUSED;
1357 #ifdef TARGET_IS_i386pe
1358 pe_dll_id_target ("pei-i386");
1360 #ifdef TARGET_IS_shpe
1361 pe_dll_id_target ("pei-shl");
1363 #ifdef TARGET_IS_mipspe
1364 pe_dll_id_target ("pei-mips");
1366 #ifdef TARGET_IS_armpe
1367 pe_dll_id_target ("pei-arm-little");
1369 if (bfd_get_format (entry->the_bfd) == bfd_object)
1371 const char *ext = entry->filename + strlen (entry->filename) - 4;
1372 if (strcmp (ext, ".dll") == 0 || strcmp (ext, ".DLL") == 0)
1373 return pe_implied_import_dll (entry->filename);
1380 gld_${EMULATION_NAME}_finish ()
1382 #if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe)
1383 struct bfd_link_hash_entry * h;
1385 if (thumb_entry_symbol != NULL)
1387 h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true);
1389 if (h != (struct bfd_link_hash_entry *) NULL
1390 && (h->type == bfd_link_hash_defined
1391 || h->type == bfd_link_hash_defweak)
1392 && h->u.def.section->output_section != NULL)
1394 static char buffer[32];
1397 /* Special procesing is required for a Thumb entry symbol. The
1398 bottom bit of its address must be set. */
1399 val = (h->u.def.value
1400 + bfd_get_section_vma (output_bfd,
1401 h->u.def.section->output_section)
1402 + h->u.def.section->output_offset);
1406 /* Now convert this value into a string and store it in entry_symbol
1407 where the lang_finish() function will pick it up. */
1411 sprintf_vma (buffer + 2, val);
1413 if (entry_symbol != NULL && entry_from_cmdline)
1414 einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"),
1415 thumb_entry_symbol, entry_symbol);
1416 entry_symbol = buffer;
1419 einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol);
1421 #endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) */
1424 if (link_info.shared)
1426 pe_dll_fill_sections (output_bfd, &link_info);
1427 if (pe_implib_filename)
1428 pe_dll_generate_implib (pe_def_file, pe_implib_filename);
1430 #if defined(TARGET_IS_shpe) || defined(TARGET_IS_mipspe)
1431 /* ARM doesn't need relocs. */
1434 pe_exe_fill_sections (output_bfd, &link_info);
1438 if (pe_out_def_filename)
1439 pe_dll_generate_def_file (pe_out_def_filename);
1440 #endif /* DLL_SUPPORT */
1442 /* I don't know where .idata gets set as code, but it shouldn't be */
1444 asection *asec = bfd_get_section_by_name (output_bfd, ".idata");
1447 asec->flags &= ~SEC_CODE;
1448 asec->flags |= SEC_DATA;
1454 /* Find the last output section before given output statement.
1455 Used by place_orphan. */
1458 output_prev_sec_find (os)
1459 lang_output_section_statement_type *os;
1461 asection *s = (asection *) NULL;
1462 lang_statement_union_type *u;
1463 lang_output_section_statement_type *lookup;
1465 for (u = lang_output_section_statement.head;
1466 u != (lang_statement_union_type *) NULL;
1469 lookup = &u->output_section_statement;
1473 if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
1474 s = lookup->bfd_section;
1480 /* Place an orphan section.
1482 We use this to put sections in a reasonable place in the file, and
1483 to ensure that they are aligned as required.
1485 We handle grouped sections here as well. A section named .foo$nn
1486 goes into the output section .foo. All grouped sections are sorted
1489 Grouped sections for the default sections are handled by the
1490 default linker script using wildcards, and are sorted by
1495 lang_output_section_statement_type *os;
1497 lang_statement_union_type **stmt;
1502 gld_${EMULATION_NAME}_place_orphan (file, s)
1503 lang_input_statement_type *file;
1506 const char *secname;
1507 char *hold_section_name;
1508 char *dollar = NULL;
1509 const char *ps = NULL;
1510 lang_output_section_statement_type *os;
1511 lang_statement_list_type add_child;
1513 secname = bfd_get_section_name (s->owner, s);
1515 /* Look through the script to see where to place this section. */
1517 hold_section_name = xstrdup (secname);
1518 if (!link_info.relocateable)
1520 dollar = strchr (hold_section_name, '$');
1525 os = lang_output_section_find (hold_section_name);
1527 lang_list_init (&add_child);
1530 && (os->bfd_section == NULL
1531 || ((s->flags ^ os->bfd_section->flags)
1532 & (SEC_LOAD | SEC_ALLOC)) == 0))
1534 /* We already have an output section statement with this
1535 name, and its bfd section, if any, has compatible flags. */
1536 lang_add_section (&add_child, s, os, file);
1540 struct orphan_save *place;
1541 static struct orphan_save hold_text;
1542 static struct orphan_save hold_rdata;
1543 static struct orphan_save hold_data;
1544 static struct orphan_save hold_bss;
1546 lang_statement_list_type *old;
1547 lang_statement_list_type add;
1548 etree_type *address;
1550 /* Try to put the new output section in a reasonable place based
1551 on the section name and section flags. */
1552 #define HAVE_SECTION(hold, name) \
1553 (hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL)
1556 if ((s->flags & SEC_ALLOC) == 0)
1558 else if ((s->flags & SEC_HAS_CONTENTS) == 0
1559 && HAVE_SECTION (hold_bss, ".bss"))
1561 else if ((s->flags & SEC_READONLY) == 0
1562 && HAVE_SECTION (hold_data, ".data"))
1564 else if ((s->flags & SEC_CODE) == 0
1565 && (s->flags & SEC_READONLY) != 0
1566 && HAVE_SECTION (hold_rdata, ".rdata"))
1567 place = &hold_rdata;
1568 else if ((s->flags & SEC_READONLY) != 0
1569 && HAVE_SECTION (hold_text, ".text"))
1574 /* Choose a unique name for the section. This will be needed if
1575 the same section name appears in the input file with
1576 different loadable or allocatable characteristics. */
1577 outsecname = xstrdup (hold_section_name);
1578 if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
1584 len = strlen (outsecname);
1585 newname = xmalloc (len + 5);
1586 strcpy (newname, outsecname);
1590 sprintf (newname + len, "%d", i);
1593 while (bfd_get_section_by_name (output_bfd, newname) != NULL);
1596 outsecname = newname;
1599 /* Start building a list of statements for this section. */
1602 lang_list_init (stat_ptr);
1604 if (config.build_constructors)
1606 /* If the name of the section is representable in C, then create
1607 symbols to mark the start and the end of the section. */
1608 for (ps = outsecname; *ps != '\0'; ps++)
1609 if (! isalnum ((unsigned char) *ps) && *ps != '_')
1614 etree_type *e_align;
1616 symname = (char *) xmalloc (ps - outsecname + sizeof "___start_");
1617 sprintf (symname, "___start_%s", outsecname);
1618 e_align = exp_unop (ALIGN_K,
1619 exp_intop ((bfd_vma) 1 << s->alignment_power));
1620 lang_add_assignment (exp_assop ('=', symname, e_align));
1624 if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
1625 address = exp_intop ((bfd_vma) 0);
1628 /* All sections in an executable must be aligned to a page
1630 address = exp_unop (ALIGN_K,
1631 exp_nameop (NAME, "__section_alignment__"));
1634 os = lang_enter_output_section_statement (outsecname, address, 0,
1636 (etree_type *) NULL,
1637 (etree_type *) NULL,
1638 (etree_type *) NULL);
1640 lang_add_section (&add_child, s, os, file);
1642 lang_leave_output_section_statement
1643 ((bfd_vma) 0, "*default*",
1644 (struct lang_output_section_phdr_list *) NULL, "*default*");
1646 if (config.build_constructors && *ps == '\0')
1650 /* lang_leave_ouput_section_statement resets stat_ptr. Put
1651 stat_ptr back where we want it. */
1655 symname = (char *) xmalloc (ps - outsecname + sizeof "___stop_");
1656 sprintf (symname, "___stop_%s", outsecname);
1657 lang_add_assignment (exp_assop ('=', symname,
1658 exp_nameop (NAME, ".")));
1665 asection *snew, **pps;
1667 snew = os->bfd_section;
1669 /* Shuffle the bfd section list to make the output file look
1670 neater. This is really only cosmetic. */
1671 if (place->section == NULL)
1673 asection *bfd_section = place->os->bfd_section;
1675 /* If the output statement hasn't been used to place
1676 any input sections (and thus doesn't have an output
1677 bfd_section), look for the closest prior output statement
1678 having an output section. */
1679 if (bfd_section == NULL)
1680 bfd_section = output_prev_sec_find (place->os);
1682 if (bfd_section != NULL && bfd_section != snew)
1683 place->section = &bfd_section->next;
1686 if (place->section != NULL)
1688 /* Unlink the section. */
1689 for (pps = &output_bfd->sections;
1691 pps = &(*pps)->next)
1693 bfd_section_list_remove (output_bfd, pps);
1695 /* Now tack it on to the "place->os" section list. */
1696 bfd_section_list_insert (output_bfd, place->section, snew);
1699 /* Save the end of this list. Further ophans of this type will
1700 follow the one we've just added. */
1701 place->section = &snew->next;
1703 /* The following is non-cosmetic. We try to put the output
1704 statements in some sort of reasonable order here, because
1705 they determine the final load addresses of the orphan
1706 sections. In addition, placing output statements in the
1707 wrong order may require extra segments. For instance,
1708 given a typical situation of all read-only sections placed
1709 in one segment and following that a segment containing all
1710 the read-write sections, we wouldn't want to place an orphan
1711 read/write section before or amongst the read-only ones. */
1712 if (add.head != NULL)
1714 if (place->stmt == NULL)
1716 /* Put the new statement list right at the head. */
1717 *add.tail = place->os->header.next;
1718 place->os->header.next = add.head;
1722 /* Put it after the last orphan statement we added. */
1723 *add.tail = *place->stmt;
1724 *place->stmt = add.head;
1727 /* Fix the global list pointer if we happened to tack our
1728 new list at the tail. */
1729 if (*old->tail == add.head)
1730 old->tail = add.tail;
1732 /* Save the end of this list. */
1733 place->stmt = add.tail;
1739 lang_statement_union_type **pl = &os->children.head;
1743 boolean found_dollar;
1745 /* The section name has a '$'. Sort it with the other '$'
1748 found_dollar = false;
1749 for ( ; *pl != NULL; pl = &(*pl)->header.next)
1751 lang_input_section_type *ls;
1754 if ((*pl)->header.type != lang_input_section_enum)
1757 ls = &(*pl)->input_section;
1759 lname = bfd_get_section_name (ls->ifile->the_bfd, ls->section);
1760 if (strchr (lname, '$') == NULL)
1767 found_dollar = true;
1768 if (strcmp (secname, lname) < 0)
1774 if (add_child.head != NULL)
1776 add_child.head->header.next = *pl;
1777 *pl = add_child.head;
1781 free (hold_section_name);
1787 gld_${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
1788 const char * arch ATTRIBUTE_UNUSED;
1789 search_dirs_type * search;
1790 lang_input_statement_type * entry;
1792 const char * filename;
1795 if (! entry->is_archive)
1798 filename = entry->filename;
1800 string = (char *) xmalloc (strlen (search->name)
1802 + sizeof "/lib.a.dll"
1804 + (pe_dll_search_prefix ? strlen (pe_dll_search_prefix) : 0)
1808 /* Try "libfoo.dll.a" first (preferred explicit import library for dll's */
1809 sprintf (string, "%s/lib%s.dll.a", search->name, filename);
1811 if (! ldfile_try_open_bfd (string, entry))
1813 /* Try "foo.dll.a" next (alternate explicit import library for dll's */
1814 sprintf (string, "%s/%s.dll.a", search->name, filename);
1815 if (! ldfile_try_open_bfd (string, entry))
1818 Try libfoo.a next. Normally, this would be interpreted as a static
1819 library, but it *could* be an import library. For backwards compatibility,
1820 libfoo.a needs to ==precede== libfoo.dll and foo.dll in the search,
1821 or sometimes errors occur when building legacy packages.
1823 Putting libfoo.a here means that in a failure case (i.e. the library
1824 -lfoo is not found) we will search for libfoo.a twice before
1825 giving up -- once here, and once when searching for a "static" lib.
1828 /* Try "libfoo.a" (import lib, or static lib, but must
1829 take precedence over dll's) */
1830 sprintf (string, "%s/lib%s.a", search->name, filename);
1831 if (! ldfile_try_open_bfd (string, entry))
1834 if (pe_dll_search_prefix)
1836 /* Try "<prefix>foo.dll" (preferred dll name, if specified) */
1837 sprintf (string, "%s/%s%s.dll", search->name, pe_dll_search_prefix, filename);
1838 if (! ldfile_try_open_bfd (string, entry))
1840 /* Try "libfoo.dll" (default preferred dll name) */
1841 sprintf (string, "%s/lib%s.dll", search->name, filename);
1842 if (! ldfile_try_open_bfd (string, entry))
1844 /* Finally, try "foo.dll" (alternate dll name) */
1845 sprintf (string, "%s/%s.dll", search->name, filename);
1846 if (! ldfile_try_open_bfd (string, entry))
1854 else /* pe_dll_search_prefix not specified */
1857 /* Try "libfoo.dll" (preferred dll name) */
1858 sprintf (string, "%s/lib%s.dll", search->name, filename);
1859 if (! ldfile_try_open_bfd (string, entry))
1861 /* Finally, try "foo.dll" (alternate dll name) */
1862 sprintf (string, "%s/%s.dll", search->name, filename);
1863 if (! ldfile_try_open_bfd (string, entry))
1874 entry->filename = string;
1880 gld_${EMULATION_NAME}_find_potential_libraries (name, entry)
1882 lang_input_statement_type * entry;
1884 return ldfile_open_file_search (name, entry, "", ".lib");
1888 gld_${EMULATION_NAME}_get_script(isfile)
1891 # Scripts compiled in.
1892 # sed commands to quote an ld script as a C string.
1893 sc="-f stringify.sed"
1895 cat >>e${EMULATION_NAME}.c <<EOF
1899 if (link_info.relocateable == true && config.build_constructors == true)
1902 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1903 echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
1904 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1905 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1906 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1907 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1908 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1909 echo ' ; else return' >> e${EMULATION_NAME}.c
1910 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1911 echo '; }' >> e${EMULATION_NAME}.c
1913 cat >>e${EMULATION_NAME}.c <<EOF
1916 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1918 gld_${EMULATION_NAME}_before_parse,
1921 gld_${EMULATION_NAME}_after_parse,
1922 gld_${EMULATION_NAME}_after_open,
1923 after_allocation_default,
1924 set_output_arch_default,
1925 ldemul_default_target,
1926 gld_${EMULATION_NAME}_before_allocation,
1927 gld_${EMULATION_NAME}_get_script,
1928 "${EMULATION_NAME}",
1930 gld_${EMULATION_NAME}_finish, /* finish */
1931 NULL, /* create output section statements */
1932 gld_${EMULATION_NAME}_open_dynamic_archive,
1933 gld_${EMULATION_NAME}_place_orphan,
1934 gld_${EMULATION_NAME}_set_symbols,
1935 gld_${EMULATION_NAME}_parse_args,
1936 gld_${EMULATION_NAME}_unrecognized_file,
1937 gld_${EMULATION_NAME}_list_options,
1938 gld_${EMULATION_NAME}_recognized_file,
1939 gld_${EMULATION_NAME}_find_potential_libraries