beos.em revision 1.1.1.1 1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 if [ -z "$MACHINE" ]; then
4 OUTPUT_ARCH=${ARCH}
5 else
6 OUTPUT_ARCH=${ARCH}:${MACHINE}
7 fi
8 fragment <<EOF
9 /* This file is part of GLD, the Gnu Linker.
10 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
11 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
12
13 This file is part of the GNU Binutils.
14
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 3 of the License, or
18 (at your option) any later version.
19
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.
24
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., 51 Franklin Street - Fifth Floor, Boston,
28 MA 02110-1301, USA. */
29
30
31 /* For WINDOWS_NT */
32 /* The original file generated returned different default scripts depending
33 on whether certain switches were set, but these switches pertain to the
34 Linux system and that particular version of coff. In the NT case, we
35 only determine if the subsystem is console or windows in order to select
36 the correct entry point by default. */
37
38 #include "sysdep.h"
39 #include "bfd.h"
40 #include "bfdlink.h"
41 #include "getopt.h"
42 #include "libiberty.h"
43 #include "filenames.h"
44 #include "ld.h"
45 #include "ldmain.h"
46 #include "ldexp.h"
47 #include "ldlang.h"
48 #include "ldfile.h"
49 #include "ldemul.h"
50 #include <ldgram.h>
51 #include "ldlex.h"
52 #include "ldmisc.h"
53 #include "ldctor.h"
54 #include "coff/internal.h"
55 #include "../bfd/libcoff.h"
56
57 #define TARGET_IS_${EMULATION_NAME}
58
59 static struct internal_extra_pe_aouthdr pe;
60 static int dll;
61
62 extern const char *output_filename;
63
64 static void
65 gld_${EMULATION_NAME}_before_parse (void)
66 {
67 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
68 output_filename = "a.exe";
69 }
70
72 /* PE format extra command line options. */
73
74 /* Used for setting flags in the PE header. */
75 #define OPTION_BASE_FILE (300 + 1)
76 #define OPTION_DLL (OPTION_BASE_FILE + 1)
77 #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
78 #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
79 #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
80 #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
81 #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
82 #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
83 #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
84 #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
85 #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
86 #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
87 #define OPTION_SUBSYSTEM (OPTION_STACK + 1)
88 #define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
89
90 static void
91 gld${EMULATION_NAME}_add_options
92 (int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl,
93 struct option **longopts, int nrl ATTRIBUTE_UNUSED,
94 struct option **really_longopts ATTRIBUTE_UNUSED)
95 {
96 static const struct option xtra_long[] = {
97 /* PE options */
98 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
99 {"dll", no_argument, NULL, OPTION_DLL},
100 {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
101 {"heap", required_argument, NULL, OPTION_HEAP},
102 {"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
103 {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
104 {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
105 {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
106 {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
107 {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
108 {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
109 {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
110 {"stack", required_argument, NULL, OPTION_STACK},
111 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
112 {NULL, no_argument, NULL, 0}
113 };
114
115 *longopts = (struct option *)
116 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
117 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
118 }
119
120
121 /* PE/WIN32; added routines to get the subsystem type, heap and/or stack
122 parameters which may be input from the command line */
123
124 typedef struct {
125 void *ptr;
126 int size;
127 int value;
128 char *symbol;
129 int inited;
130 } definfo;
131
132 #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
133
134 static definfo init[] =
135 {
136 /* imagebase must be first */
137 #define IMAGEBASEOFF 0
138 D(ImageBase,"__image_base__", BEOS_EXE_IMAGE_BASE),
139 #define DLLOFF 1
140 {&dll, sizeof(dll), 0, "__dll__", 0},
141 D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
142 D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
143 D(MajorOperatingSystemVersion,"__major_os_version__", 4),
144 D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
145 D(MajorImageVersion,"__major_image_version__", 1),
146 D(MinorImageVersion,"__minor_image_version__", 0),
147 D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
148 D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
149 D(Subsystem,"__subsystem__", 3),
150 D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x2000000),
151 D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
152 D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
153 D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
154 D(LoaderFlags,"__loader_flags__", 0x0),
155 { NULL, 0, 0, NULL, 0 }
156 };
157
158
159 static void
160 set_pe_name (char *name, long val)
161 {
162 int i;
163 /* Find the name and set it. */
164 for (i = 0; init[i].ptr; i++)
165 {
166 if (strcmp (name, init[i].symbol) == 0)
167 {
168 init[i].value = val;
169 init[i].inited = 1;
170 return;
171 }
172 }
173 abort();
174 }
175
176
177 static void
178 set_pe_subsystem (void)
179 {
180 const char *sver;
181 int len;
182 int i;
183 static const struct
184 {
185 const char *name;
186 const int value;
187 const char *entry;
188 }
189 v[] =
190 {
191 { "native", 1, "_NtProcessStartup" },
192 { "windows", 2, "_WinMainCRTStartup" },
193 { "wwindows", 2, "_wWinMainCRTStartup" },
194 { "console", 3, "_mainCRTStartup" },
195 { "wconsole", 3, "_wmainCRTStartup" },
196 { "posix", 7, "___PosixProcessStartup"},
197 { 0, 0, 0 }
198 };
199
200 sver = strchr (optarg, ':');
201 if (sver == NULL)
202 len = strlen (optarg);
203 else
204 {
205 char *end;
206
207 len = sver - optarg;
208 set_pe_name ("__major_subsystem_version__",
209 strtoul (sver + 1, &end, 0));
210 if (*end == '.')
211 set_pe_name ("__minor_subsystem_version__",
212 strtoul (end + 1, &end, 0));
213 if (*end != '\0')
214 einfo ("%P: warning: bad version number in -subsystem option\n");
215 }
216
217 for (i = 0; v[i].name; i++)
218 {
219 if (strncmp (optarg, v[i].name, len) == 0
220 && v[i].name[len] == '\0')
221 {
222 set_pe_name ("__subsystem__", v[i].value);
223
224 /* If the subsystem is windows, we use a different entry
225 point. */
226 lang_default_entry (v[i].entry);
227
228 return;
229 }
230 }
231 einfo ("%P%F: invalid subsystem type %s\n", optarg);
232 }
233
234
235 static void
236 set_pe_value (char *name)
237 {
238 char *end;
239 set_pe_name (name, strtoul (optarg, &end, 0));
240 if (end == optarg)
241 {
242 einfo ("%P%F: invalid hex number for PE parameter '%s'\n", optarg);
243 }
244
245 optarg = end;
246 }
247
248 static void
249 set_pe_stack_heap (char *resname, char *comname)
250 {
251 set_pe_value (resname);
252 if (*optarg == ',')
253 {
254 optarg++;
255 set_pe_value (comname);
256 }
257 else if (*optarg)
258 {
259 einfo ("%P%F: strange hex info for PE parameter '%s'\n", optarg);
260 }
261 }
262
263
264 static bfd_boolean
265 gld${EMULATION_NAME}_handle_option (int optc)
266 {
267 switch (optc)
268 {
269 default:
270 return FALSE;
271
272 case OPTION_BASE_FILE:
273 link_info.base_file = fopen (optarg, FOPEN_WB);
274 if (link_info.base_file == NULL)
275 einfo (_("%F%P: cannot open base file %s\n"), optarg);
276 break;
277
278 /* PE options */
279 case OPTION_HEAP:
280 set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
281 break;
282 case OPTION_STACK:
283 set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
284 break;
285 case OPTION_SUBSYSTEM:
286 set_pe_subsystem ();
287 break;
288 case OPTION_MAJOR_OS_VERSION:
289 set_pe_value ("__major_os_version__");
290 break;
291 case OPTION_MINOR_OS_VERSION:
292 set_pe_value ("__minor_os_version__");
293 break;
294 case OPTION_MAJOR_SUBSYSTEM_VERSION:
295 set_pe_value ("__major_subsystem_version__");
296 break;
297 case OPTION_MINOR_SUBSYSTEM_VERSION:
298 set_pe_value ("__minor_subsystem_version__");
299 break;
300 case OPTION_MAJOR_IMAGE_VERSION:
301 set_pe_value ("__major_image_version__");
302 break;
303 case OPTION_MINOR_IMAGE_VERSION:
304 set_pe_value ("__minor_image_version__");
305 break;
306 case OPTION_FILE_ALIGNMENT:
307 set_pe_value ("__file_alignment__");
308 break;
309 case OPTION_SECTION_ALIGNMENT:
310 set_pe_value ("__section_alignment__");
311 break;
312 case OPTION_DLL:
313 set_pe_name ("__dll__", 1);
314 break;
315 case OPTION_IMAGE_BASE:
316 set_pe_value ("__image_base__");
317 break;
318 }
319 return TRUE;
320 }
321
323 /* Assign values to the special symbols before the linker script is
324 read. */
325
326 static void
327 gld_${EMULATION_NAME}_set_symbols (void)
328 {
329 /* Run through and invent symbols for all the
330 names and insert the defaults. */
331 int j;
332
333 if (!init[IMAGEBASEOFF].inited)
334 {
335 if (link_info.relocatable)
336 init[IMAGEBASEOFF].value = 0;
337 else if (init[DLLOFF].value)
338 init[IMAGEBASEOFF].value = BEOS_DLL_IMAGE_BASE;
339 else
340 init[IMAGEBASEOFF].value = BEOS_EXE_IMAGE_BASE;
341 }
342
343 /* Don't do any symbol assignments if this is a relocatable link. */
344 if (link_info.relocatable)
345 return;
346
347 /* Glue the assignments into the abs section */
348 push_stat_ptr (&abs_output_section->children);
349
350 for (j = 0; init[j].ptr; j++)
351 {
352 long val = init[j].value;
353 lang_add_assignment (exp_assign (init[j].symbol, exp_intop (val),
354 FALSE));
355 if (init[j].size == sizeof(short))
356 *(short *)init[j].ptr = val;
357 else if (init[j].size == sizeof(int))
358 *(int *)init[j].ptr = val;
359 else if (init[j].size == sizeof(long))
360 *(long *)init[j].ptr = val;
361 /* This might be a long long or other special type. */
362 else if (init[j].size == sizeof(bfd_vma))
363 *(bfd_vma *)init[j].ptr = val;
364 else abort();
365 }
366 /* Restore the pointer. */
367 pop_stat_ptr ();
368
369 if (pe.FileAlignment >
370 pe.SectionAlignment)
371 {
372 einfo ("%P: warning, file alignment > section alignment.\n");
373 }
374 }
375
376 static void
377 gld_${EMULATION_NAME}_after_open (void)
378 {
379 after_open_default ();
380
381 /* Pass the wacky PE command line options into the output bfd.
382 FIXME: This should be done via a function, rather than by
383 including an internal BFD header. */
384 if (!coff_data(link_info.output_bfd)->pe)
385 {
386 einfo ("%F%P: PE operations on non PE file.\n");
387 }
388
389 pe_data(link_info.output_bfd)->pe_opthdr = pe;
390 pe_data(link_info.output_bfd)->dll = init[DLLOFF].value;
391
392 }
393
395 /* Callback functions for qsort in sort_sections. */
396
397 static int
398 sort_by_file_name (const void *a, const void *b)
399 {
400 const lang_statement_union_type *const *ra = a;
401 const lang_statement_union_type *const *rb = b;
402 int i, a_sec, b_sec;
403
404 i = filename_cmp ((*ra)->input_section.section->owner->my_archive->filename,
405 (*rb)->input_section.section->owner->my_archive->filename);
406 if (i != 0)
407 return i;
408
409 i = filename_cmp ((*ra)->input_section.section->owner->filename,
410 (*rb)->input_section.section->owner->filename);
411 if (i != 0)
412 return i;
413 /* the tail idata4/5 are the only ones without relocs to an
414 idata$6 section unless we are importing by ordinal,
415 so sort them to last to terminate the IAT
416 and HNT properly. if no reloc this one is import by ordinal
417 so we have to sort by section contents */
418
419 if ( ((*ra)->input_section.section->reloc_count + (*rb)->input_section.section->reloc_count) )
420 {
421 i = (((*ra)->input_section.section->reloc_count >
422 (*rb)->input_section.section->reloc_count) ? -1 : 0);
423 if ( i != 0)
424 return i;
425
426 return (((*ra)->input_section.section->reloc_count >
427 (*rb)->input_section.section->reloc_count) ? 0 : 1);
428 }
429 else
430 {
431 if ( (strcmp( (*ra)->input_section.section->name, ".idata$6") == 0) )
432 return 0; /* don't sort .idata$6 or .idata$7 FIXME dlltool eliminate .idata$7 */
433
434 if (! bfd_get_section_contents ((*ra)->input_section.section->owner,
435 (*ra)->input_section.section, &a_sec, (file_ptr) 0, (bfd_size_type)sizeof(a_sec)))
436 einfo ("%F%B: Can't read contents of section .idata: %E\n",
437 (*ra)->input_section.section->owner);
438
439 if (! bfd_get_section_contents ((*rb)->input_section.section->owner,
440 (*rb)->input_section.section, &b_sec, (file_ptr) 0, (bfd_size_type)sizeof(b_sec) ))
441 einfo ("%F%B: Can't read contents of section .idata: %E\n",
442 (*rb)->input_section.section->owner);
443
444 i = ((a_sec < b_sec) ? -1 : 0);
445 if ( i != 0)
446 return i;
447 return ((a_sec < b_sec) ? 0 : 1);
448 }
449 return 0;
450 }
451
452 static int
453 sort_by_section_name (const void *a, const void *b)
454 {
455 const lang_statement_union_type *const *ra = a;
456 const lang_statement_union_type *const *rb = b;
457 int i;
458 i = strcmp ((*ra)->input_section.section->name,
459 (*rb)->input_section.section->name);
460 /* This is a hack to make .stab and .stabstr last, so we don't have
461 to fix strip/objcopy for .reloc sections.
462 FIXME stripping images with a .rsrc section still needs to be fixed. */
463 if (i != 0)
464 {
465 if ((CONST_STRNEQ ((*ra)->input_section.section->name, ".stab"))
466 && (! CONST_STRNEQ ((*rb)->input_section.section->name, ".stab")))
467 return 1;
468 }
469 return i;
470 }
471
472 /* Subroutine of sort_sections to a contiguous subset of a list of sections.
473 NEXT_AFTER is the element after the last one to sort.
474 The result is a pointer to the last element's "next" pointer. */
475
476 static lang_statement_union_type **
477 sort_sections_1 (lang_statement_union_type **startptr,
478 lang_statement_union_type *next_after,
479 int count,
480 int (*sort_func) (const void *, const void *))
481 {
482 lang_statement_union_type **vec;
483 lang_statement_union_type *p;
484 int i;
485 lang_statement_union_type **ret;
486
487 if (count == 0)
488 return startptr;
489
490 vec = ((lang_statement_union_type **)
491 xmalloc (count * sizeof (lang_statement_union_type *)));
492
493 for (p = *startptr, i = 0; i < count; i++, p = p->header.next)
494 vec[i] = p;
495
496 qsort (vec, count, sizeof (vec[0]), sort_func);
497
498 /* Fill in the next pointers again. */
499 *startptr = vec[0];
500 for (i = 0; i < count - 1; i++)
501 vec[i]->header.next = vec[i + 1];
502 vec[i]->header.next = next_after;
503 ret = &vec[i]->header.next;
504 free (vec);
505 return ret;
506 }
507
508 /* Sort the .idata\$foo input sections of archives into filename order.
509 The reason is so dlltool can arrange to have the pe dll import information
510 generated correctly - the head of the list goes into dh.o, the tail into
511 dt.o, and the guts into ds[nnnn].o. Note that this is only needed for the
512 .idata section.
513 FIXME: This may no longer be necessary with grouped sections. Instead of
514 sorting on dh.o, ds[nnnn].o, dt.o, one could, for example, have dh.o use
515 .idata\$4h, have ds[nnnn].o use .idata\$4s[nnnn], and have dt.o use .idata\$4t.
516 This would have to be elaborated upon to handle multiple dll's
517 [assuming such an eloboration is possible of course].
518
519 We also sort sections in '\$' wild statements. These are created by the
520 place_orphans routine to implement grouped sections. */
521
522 static void
523 sort_sections (lang_statement_union_type *s)
524 {
525 for (; s ; s = s->header.next)
526 switch (s->header.type)
527 {
528 case lang_output_section_statement_enum:
529 sort_sections (s->output_section_statement.children.head);
530 break;
531 case lang_wild_statement_enum:
532 {
533 lang_statement_union_type **p = &s->wild_statement.children.head;
534 struct wildcard_list *sec;
535
536 for (sec = s->wild_statement.section_list; sec; sec = sec->next)
537 {
538 /* Is this the .idata section? */
539 if (sec->spec.name != NULL
540 && CONST_STRNEQ (sec->spec.name, ".idata"))
541 {
542 /* Sort the children. We want to sort any objects in
543 the same archive. In order to handle the case of
544 including a single archive multiple times, we sort
545 all the children by archive name and then by object
546 name. After sorting them, we re-thread the pointer
547 chain. */
548
549 while (*p)
550 {
551 lang_statement_union_type *start = *p;
552 if (start->header.type != lang_input_section_enum
553 || !start->input_section.section->owner->my_archive)
554 p = &(start->header.next);
555 else
556 {
557 lang_statement_union_type *end;
558 int count;
559
560 for (end = start, count = 0;
561 end && (end->header.type
562 == lang_input_section_enum);
563 end = end->header.next)
564 count++;
565
566 p = sort_sections_1 (p, end, count,
567 sort_by_file_name);
568 }
569 }
570 break;
571 }
572
573 /* If this is a collection of grouped sections, sort them.
574 The linker script must explicitly mention "*(.foo\$)" or
575 "*(.foo\$*)". Don't sort them if \$ is not the last
576 character (not sure if this is really useful, but it
577 allows explicitly mentioning some \$ sections and letting
578 the linker handle the rest). */
579 if (sec->spec.name != NULL)
580 {
581 char *q = strchr (sec->spec.name, '\$');
582
583 if (q != NULL
584 && (q[1] == '\0'
585 || (q[1] == '*' && q[2] == '\0')))
586 {
587 lang_statement_union_type *end;
588 int count;
589
590 for (end = *p, count = 0; end; end = end->header.next)
591 {
592 if (end->header.type != lang_input_section_enum)
593 abort ();
594 count++;
595 }
596 (void) sort_sections_1 (p, end, count,
597 sort_by_section_name);
598 }
599 break;
600 }
601 }
602 }
603 break;
604 default:
605 break;
606 }
607 }
608
609 static void
610 gld_${EMULATION_NAME}_before_allocation (void)
611 {
612 #ifdef TARGET_IS_ppcpe
613 /* Here we rummage through the found bfds to collect toc information */
614 {
615 LANG_FOR_EACH_INPUT_STATEMENT (is)
616 {
617 if (!ppc_process_before_allocation(is->the_bfd, &link_info))
618 {
619 einfo("Errors encountered processing file %s\n", is->filename);
620 }
621 }
622 }
623
624 /* We have seen it all. Allocate it, and carry on */
625 ppc_allocate_toc_section (&link_info);
626 #else
627 #ifdef TARGET_IS_armpe
628 /* FIXME: we should be able to set the size of the interworking stub
629 section.
630
631 Here we rummage through the found bfds to collect glue
632 information. FIXME: should this be based on a command line
633 option? krk (a] cygnus.com */
634 {
635 LANG_FOR_EACH_INPUT_STATEMENT (is)
636 {
637 if (!arm_process_before_allocation (is->the_bfd, & link_info))
638 {
639 einfo ("Errors encountered processing file %s", is->filename);
640 }
641 }
642 }
643
644 /* We have seen it all. Allocate it, and carry on */
645 arm_allocate_interworking_sections (& link_info);
646 #endif /* TARGET_IS_armpe */
647 #endif /* TARGET_IS_ppcpe */
648
649 sort_sections (stat_ptr->head);
650
651 before_allocation_default ();
652 }
653
655 /* Place an orphan section. We use this to put sections with a '\$' in them
656 into the right place. Any section with a '\$' in them (e.g. .text\$foo)
657 gets mapped to the output section with everything from the '\$' on stripped
658 (e.g. .text).
659 See the Microsoft Portable Executable and Common Object File Format
660 Specification 4.1, section 4.2, Grouped Sections.
661
662 FIXME: This is now handled by the linker script using wildcards,
663 but I'm leaving this here in case we want to enable it for sections
664 which are not mentioned in the linker script. */
665
666 static lang_output_section_statement_type *
667 gld${EMULATION_NAME}_place_orphan (asection *s,
668 const char *secname,
669 int constraint)
670 {
671 char *output_secname, *ps;
672 lang_output_section_statement_type *os;
673 lang_statement_union_type *l;
674
675 if ((s->flags & SEC_ALLOC) == 0)
676 return NULL;
677
678 /* Don't process grouped sections unless doing a final link.
679 If they're marked as COMDAT sections, we don't want .text\$foo to
680 end up in .text and then have .text disappear because it's marked
681 link-once-discard. */
682 if (link_info.relocatable)
683 return NULL;
684
685 /* Everything from the '\$' on gets deleted so don't allow '\$' as the
686 first character. */
687 if (*secname == '\$')
688 einfo ("%P%F: section %s has '\$' as first character\n", secname);
689 if (strchr (secname + 1, '\$') == NULL)
690 return NULL;
691
692 /* Look up the output section. The Microsoft specs say sections names in
693 image files never contain a '\$'. Fortunately, lang_..._lookup creates
694 the section if it doesn't exist. */
695 output_secname = xstrdup (secname);
696 ps = strchr (output_secname + 1, '\$');
697 *ps = 0;
698 os = lang_output_section_statement_lookup (output_secname, constraint, TRUE);
699
700 /* Find the '\$' wild statement for this section. We currently require the
701 linker script to explicitly mention "*(.foo\$)".
702 FIXME: ppcpe.sc has .CRT\$foo in the .rdata section. According to the
703 Microsoft docs this isn't correct so it's not (currently) handled. */
704
705 ps[0] = '\$';
706 ps[1] = 0;
707 for (l = os->children.head; l; l = l->header.next)
708 if (l->header.type == lang_wild_statement_enum)
709 {
710 struct wildcard_list *sec;
711
712 for (sec = l->wild_statement.section_list; sec; sec = sec->next)
713 if (sec->spec.name && strcmp (sec->spec.name, output_secname) == 0)
714 break;
715 if (sec)
716 break;
717 }
718 ps[0] = 0;
719 if (l == NULL)
720 einfo ("%P%F: *(%s\$) missing from linker script\n", output_secname);
721
722 /* Link the input section in and we're done for now.
723 The sections still have to be sorted, but that has to wait until
724 all such sections have been processed by us. The sorting is done by
725 sort_sections. */
726 lang_add_section (&l->wild_statement.children, s, NULL, os);
727
728 return os;
729 }
730
732 static char *
733 gld_${EMULATION_NAME}_get_script (int *isfile)
734 EOF
735 # Scripts compiled in.
736 # sed commands to quote an ld script as a C string.
737 sc="-f stringify.sed"
738
739 fragment <<EOF
740 {
741 *isfile = 0;
742
743 if (link_info.relocatable && config.build_constructors)
744 return
745 EOF
746 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
747 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
748 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
749 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
750 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
751 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
752 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
753 echo ' ; else return' >> e${EMULATION_NAME}.c
754 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
755 echo '; }' >> e${EMULATION_NAME}.c
756
757 fragment <<EOF
758
759
760 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
761 {
762 gld_${EMULATION_NAME}_before_parse,
763 syslib_default,
764 hll_default,
765 after_parse_default,
766 gld_${EMULATION_NAME}_after_open,
767 after_allocation_default,
768 set_output_arch_default,
769 ldemul_default_target,
770 gld_${EMULATION_NAME}_before_allocation,
771 gld_${EMULATION_NAME}_get_script,
772 "${EMULATION_NAME}",
773 "${OUTPUT_FORMAT}",
774 finish_default,
775 NULL, /* create output section statements */
776 NULL, /* open dynamic archive */
777 gld${EMULATION_NAME}_place_orphan,
778 gld_${EMULATION_NAME}_set_symbols,
779 NULL, /* parse_args */
780 gld${EMULATION_NAME}_add_options,
781 gld${EMULATION_NAME}_handle_option,
782 NULL, /* unrecognized file */
783 NULL, /* list options */
784 NULL, /* recognized file */
785 NULL, /* find_potential_libraries */
786 NULL /* new_vers_pattern */
787 };
788 EOF
789