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252b5132 RH |
1 | # This shell script emits a C file. -*- C -*- |
2 | # It does some substitutions. | |
86af25fe L |
3 | if [ -z "$MACHINE" ]; then |
4 | OUTPUT_ARCH=${ARCH} | |
5 | else | |
6 | OUTPUT_ARCH=${ARCH}:${MACHINE} | |
7 | fi | |
252b5132 RH |
8 | cat >e${EMULATION_NAME}.c <<EOF |
9 | /* This file is part of GLD, the Gnu Linker. | |
a2b64bed | 10 | Copyright 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc. |
252b5132 RH |
11 | |
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
25 | ||
26 | /* For WINDOWS_NT */ | |
27 | /* The original file generated returned different default scripts depending | |
28 | on whether certain switches were set, but these switches pertain to the | |
29 | Linux system and that particular version of coff. In the NT case, we | |
30 | only determine if the subsystem is console or windows in order to select | |
31 | the correct entry point by default. */ | |
32 | ||
33 | #include "bfd.h" | |
34 | #include "sysdep.h" | |
35 | #include "bfdlink.h" | |
36 | #include "getopt.h" | |
37 | #include "libiberty.h" | |
38 | #include "ld.h" | |
39 | #include "ldmain.h" | |
40 | #include "ldgram.h" | |
41 | #include "ldexp.h" | |
42 | #include "ldlang.h" | |
b71e2778 | 43 | #include "ldfile.h" |
252b5132 RH |
44 | #include "ldemul.h" |
45 | #include "ldlex.h" | |
46 | #include "ldmisc.h" | |
47 | #include "ldctor.h" | |
252b5132 RH |
48 | #include "coff/internal.h" |
49 | #include "../bfd/libcoff.h" | |
50 | ||
51 | #define TARGET_IS_${EMULATION_NAME} | |
52 | ||
53 | static void gld_${EMULATION_NAME}_set_symbols PARAMS ((void)); | |
54 | static void gld_${EMULATION_NAME}_after_open PARAMS ((void)); | |
55 | static void gld_${EMULATION_NAME}_before_parse PARAMS ((void)); | |
56 | static void gld_${EMULATION_NAME}_before_allocation PARAMS ((void)); | |
57 | static boolean gld${EMULATION_NAME}_place_orphan | |
58 | PARAMS ((lang_input_statement_type *, asection *)); | |
59 | static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *)); | |
60 | static int gld_${EMULATION_NAME}_parse_args PARAMS ((int, char **)); | |
61 | ||
62 | #if 0 /* argument to qsort so don't prototype */ | |
63 | static int sort_by_file_name PARAMS ((void *, void *)); | |
64 | static int sort_by_section_name PARAMS ((void *, void *)); | |
65 | #endif | |
66 | static lang_statement_union_type **sort_sections_1 | |
67 | PARAMS ((lang_statement_union_type **, lang_statement_union_type *, int, | |
68 | int (*)())); | |
69 | static void sort_sections PARAMS ((lang_statement_union_type *)); | |
70 | ||
71 | static struct internal_extra_pe_aouthdr pe; | |
72 | static int dll; | |
73 | ||
74 | extern const char *output_filename; | |
75 | ||
76 | static void | |
77 | gld_${EMULATION_NAME}_before_parse() | |
78 | { | |
79 | output_filename = "a.exe"; | |
86af25fe L |
80 | const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}"); |
81 | if (arch) | |
82 | { | |
83 | ldfile_output_architecture = arch->arch; | |
84 | ldfile_output_machine = arch->mach; | |
85 | ldfile_output_machine_name = arch->printable_name; | |
86 | } | |
87 | else | |
88 | ldfile_output_architecture = bfd_arch_${ARCH}; | |
252b5132 RH |
89 | } |
90 | \f | |
91 | /* PE format extra command line options. */ | |
92 | ||
93 | /* Used for setting flags in the PE header. */ | |
94 | #define OPTION_BASE_FILE (300 + 1) | |
95 | #define OPTION_DLL (OPTION_BASE_FILE + 1) | |
96 | #define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1) | |
97 | #define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1) | |
98 | #define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1) | |
99 | #define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1) | |
100 | #define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1) | |
101 | #define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1) | |
102 | #define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1) | |
103 | #define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1) | |
104 | #define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1) | |
105 | #define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1) | |
106 | #define OPTION_SUBSYSTEM (OPTION_STACK + 1) | |
107 | #define OPTION_HEAP (OPTION_SUBSYSTEM + 1) | |
108 | ||
109 | static struct option longopts[] = { | |
110 | /* PE options */ | |
111 | {"base-file", required_argument, NULL, OPTION_BASE_FILE}, | |
112 | {"dll", no_argument, NULL, OPTION_DLL}, | |
113 | {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT}, | |
114 | {"heap", required_argument, NULL, OPTION_HEAP}, | |
115 | {"image-base", required_argument, NULL, OPTION_IMAGE_BASE}, | |
116 | {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION}, | |
117 | {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION}, | |
118 | {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION}, | |
119 | {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION}, | |
120 | {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION}, | |
121 | {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION}, | |
122 | {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT}, | |
123 | {"stack", required_argument, NULL, OPTION_STACK}, | |
124 | {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, | |
125 | {NULL, no_argument, NULL, 0} | |
126 | }; | |
127 | ||
128 | ||
129 | /* PE/WIN32; added routines to get the subsystem type, heap and/or stack | |
130 | parameters which may be input from the command line */ | |
131 | ||
132 | typedef struct { | |
133 | void *ptr; | |
134 | int size; | |
135 | int value; | |
136 | char *symbol; | |
137 | int inited; | |
138 | } definfo; | |
139 | ||
140 | #define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0} | |
141 | ||
142 | static definfo init[] = | |
143 | { | |
144 | /* imagebase must be first */ | |
145 | #define IMAGEBASEOFF 0 | |
146 | D(ImageBase,"__image_base__", BEOS_EXE_IMAGE_BASE), | |
147 | #define DLLOFF 1 | |
148 | {&dll, sizeof(dll), 0, "__dll__"}, | |
149 | D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT), | |
150 | D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT), | |
151 | D(MajorOperatingSystemVersion,"__major_os_version__", 4), | |
152 | D(MinorOperatingSystemVersion,"__minor_os_version__", 0), | |
153 | D(MajorImageVersion,"__major_image_version__", 1), | |
154 | D(MinorImageVersion,"__minor_image_version__", 0), | |
155 | D(MajorSubsystemVersion,"__major_subsystem_version__", 4), | |
156 | D(MinorSubsystemVersion,"__minor_subsystem_version__", 0), | |
157 | D(Subsystem,"__subsystem__", 3), | |
158 | D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x2000000), | |
159 | D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000), | |
160 | D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000), | |
161 | D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000), | |
162 | D(LoaderFlags,"__loader_flags__", 0x0), | |
163 | { NULL, 0, 0, NULL, 0 } | |
164 | }; | |
165 | ||
166 | ||
167 | static void | |
168 | set_pe_name (name, val) | |
169 | char *name; | |
170 | long val; | |
171 | { | |
172 | int i; | |
173 | /* Find the name and set it. */ | |
174 | for (i = 0; init[i].ptr; i++) | |
175 | { | |
176 | if (strcmp (name, init[i].symbol) == 0) | |
177 | { | |
178 | init[i].value = val; | |
179 | init[i].inited = 1; | |
180 | return; | |
181 | } | |
182 | } | |
183 | abort(); | |
184 | } | |
185 | ||
186 | ||
187 | static void | |
188 | set_pe_subsystem () | |
189 | { | |
190 | const char *sver; | |
191 | int len; | |
192 | int i; | |
193 | static const struct | |
194 | { | |
195 | const char *name; | |
196 | const int value; | |
197 | const char *entry; | |
198 | } | |
199 | v[] = | |
200 | { | |
201 | { "native", 1, "_NtProcessStartup" }, | |
202 | { "windows", 2, "_WinMainCRTStartup" }, | |
203 | { "wwindows", 2, "_wWinMainCRTStartup" }, | |
204 | { "console", 3, "_mainCRTStartup" }, | |
205 | { "wconsole", 3, "_wmainCRTStartup" }, | |
206 | #if 0 | |
207 | /* The Microsoft linker does not recognize this. */ | |
208 | { "os2", 5, "" }, | |
209 | #endif | |
210 | { "posix", 7, "___PosixProcessStartup"}, | |
211 | { 0, 0, 0 } | |
212 | }; | |
213 | ||
214 | sver = strchr (optarg, ':'); | |
215 | if (sver == NULL) | |
216 | len = strlen (optarg); | |
217 | else | |
218 | { | |
219 | char *end; | |
220 | ||
221 | len = sver - optarg; | |
222 | set_pe_name ("__major_subsystem_version__", | |
223 | strtoul (sver + 1, &end, 0)); | |
224 | if (*end == '.') | |
225 | set_pe_name ("__minor_subsystem_version__", | |
226 | strtoul (end + 1, &end, 0)); | |
227 | if (*end != '\0') | |
228 | einfo ("%P: warning: bad version number in -subsystem option\n"); | |
229 | } | |
230 | ||
231 | for (i = 0; v[i].name; i++) | |
232 | { | |
233 | if (strncmp (optarg, v[i].name, len) == 0 | |
234 | && v[i].name[len] == '\0') | |
235 | { | |
236 | set_pe_name ("__subsystem__", v[i].value); | |
237 | ||
238 | /* If the subsystem is windows, we use a different entry | |
239 | point. We also register the entry point as an undefined | |
240 | symbol. from lang_add_entry() The reason we do | |
241 | this is so that the user | |
242 | doesn't have to because they would have to use the -u | |
243 | switch if they were specifying an entry point other than | |
244 | _mainCRTStartup. Specifically, if creating a windows | |
245 | application, entry point _WinMainCRTStartup must be | |
246 | specified. What I have found for non console | |
247 | applications (entry not _mainCRTStartup) is that the .obj | |
248 | that contains mainCRTStartup is brought in since it is | |
249 | the first encountered in libc.lib and it has other | |
250 | symbols in it which will be pulled in by the link | |
251 | process. To avoid this, adding -u with the entry point | |
252 | name specified forces the correct .obj to be used. We | |
253 | can avoid making the user do this by always adding the | |
254 | entry point name as an undefined symbol. */ | |
255 | lang_add_entry (v[i].entry, 1); | |
256 | ||
257 | return; | |
258 | } | |
259 | } | |
260 | einfo ("%P%F: invalid subsystem type %s\n", optarg); | |
261 | } | |
262 | ||
263 | ||
264 | ||
265 | static void | |
266 | set_pe_value (name) | |
267 | char *name; | |
268 | ||
269 | { | |
270 | char *end; | |
271 | set_pe_name (name, strtoul (optarg, &end, 0)); | |
272 | if (end == optarg) | |
273 | { | |
274 | einfo ("%P%F: invalid hex number for PE parameter '%s'\n", optarg); | |
275 | } | |
276 | ||
277 | optarg = end; | |
278 | } | |
279 | ||
280 | static void | |
281 | set_pe_stack_heap (resname, comname) | |
282 | char *resname; | |
283 | char *comname; | |
284 | { | |
285 | set_pe_value (resname); | |
286 | if (*optarg == ',') | |
287 | { | |
288 | optarg++; | |
289 | set_pe_value (comname); | |
290 | } | |
291 | else if (*optarg) | |
292 | { | |
293 | einfo ("%P%F: strange hex info for PE parameter '%s'\n", optarg); | |
294 | } | |
295 | } | |
296 | ||
297 | ||
298 | ||
299 | static int | |
300 | gld_${EMULATION_NAME}_parse_args(argc, argv) | |
301 | int argc; | |
302 | char **argv; | |
303 | { | |
304 | int longind; | |
305 | int optc; | |
306 | int prevoptind = optind; | |
307 | int prevopterr = opterr; | |
308 | int wanterror; | |
309 | static int lastoptind = -1; | |
310 | ||
311 | if (lastoptind != optind) | |
312 | opterr = 0; | |
313 | wanterror = opterr; | |
314 | ||
315 | lastoptind = optind; | |
316 | ||
317 | optc = getopt_long_only (argc, argv, "-", longopts, &longind); | |
318 | opterr = prevopterr; | |
319 | ||
320 | switch (optc) | |
321 | { | |
322 | default: | |
323 | if (wanterror) | |
324 | xexit (1); | |
325 | optind = prevoptind; | |
326 | return 0; | |
327 | ||
328 | case OPTION_BASE_FILE: | |
329 | link_info.base_file = (PTR) fopen (optarg, FOPEN_WB); | |
330 | if (link_info.base_file == NULL) | |
331 | { | |
332 | fprintf (stderr, "%s: Can't open base file %s\n", | |
333 | program_name, optarg); | |
334 | xexit (1); | |
335 | } | |
336 | break; | |
337 | ||
338 | /* PE options */ | |
339 | case OPTION_HEAP: | |
340 | set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__"); | |
341 | break; | |
342 | case OPTION_STACK: | |
343 | set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__"); | |
344 | break; | |
345 | case OPTION_SUBSYSTEM: | |
346 | set_pe_subsystem (); | |
347 | break; | |
348 | case OPTION_MAJOR_OS_VERSION: | |
349 | set_pe_value ("__major_os_version__"); | |
350 | break; | |
351 | case OPTION_MINOR_OS_VERSION: | |
352 | set_pe_value ("__minor_os_version__"); | |
353 | break; | |
354 | case OPTION_MAJOR_SUBSYSTEM_VERSION: | |
355 | set_pe_value ("__major_subsystem_version__"); | |
356 | break; | |
357 | case OPTION_MINOR_SUBSYSTEM_VERSION: | |
358 | set_pe_value ("__minor_subsystem_version__"); | |
359 | break; | |
360 | case OPTION_MAJOR_IMAGE_VERSION: | |
361 | set_pe_value ("__major_image_version__"); | |
362 | break; | |
363 | case OPTION_MINOR_IMAGE_VERSION: | |
364 | set_pe_value ("__minor_image_version__"); | |
365 | break; | |
366 | case OPTION_FILE_ALIGNMENT: | |
367 | set_pe_value ("__file_alignment__"); | |
368 | break; | |
369 | case OPTION_SECTION_ALIGNMENT: | |
370 | set_pe_value ("__section_alignment__"); | |
371 | break; | |
372 | case OPTION_DLL: | |
373 | set_pe_name ("__dll__", 1); | |
374 | break; | |
375 | case OPTION_IMAGE_BASE: | |
376 | set_pe_value ("__image_base__"); | |
377 | break; | |
378 | } | |
379 | return 1; | |
380 | } | |
381 | \f | |
382 | /* Assign values to the special symbols before the linker script is | |
383 | read. */ | |
384 | ||
385 | static void | |
386 | gld_${EMULATION_NAME}_set_symbols() | |
387 | { | |
388 | /* Run through and invent symbols for all the | |
389 | names and insert the defaults. */ | |
390 | int j; | |
391 | lang_statement_list_type *save; | |
392 | ||
393 | if (!init[IMAGEBASEOFF].inited) | |
394 | { | |
395 | if (link_info.relocateable) | |
396 | init[IMAGEBASEOFF].value = 0; | |
397 | else if (init[DLLOFF].value) | |
398 | init[IMAGEBASEOFF].value = BEOS_DLL_IMAGE_BASE; | |
399 | else | |
400 | init[IMAGEBASEOFF].value = BEOS_EXE_IMAGE_BASE; | |
401 | } | |
402 | ||
403 | /* Don't do any symbol assignments if this is a relocateable link. */ | |
404 | if (link_info.relocateable) | |
405 | return; | |
406 | ||
407 | /* Glue the assignments into the abs section */ | |
408 | save = stat_ptr; | |
409 | ||
410 | stat_ptr = &(abs_output_section->children); | |
411 | ||
412 | for (j = 0; init[j].ptr; j++) | |
413 | { | |
414 | long val = init[j].value; | |
415 | lang_add_assignment (exp_assop ('=' ,init[j].symbol, exp_intop (val))); | |
416 | if (init[j].size == sizeof(short)) | |
417 | *(short *)init[j].ptr = val; | |
418 | else if (init[j].size == sizeof(int)) | |
419 | *(int *)init[j].ptr = val; | |
420 | else if (init[j].size == sizeof(long)) | |
421 | *(long *)init[j].ptr = val; | |
422 | /* This might be a long long or other special type. */ | |
423 | else if (init[j].size == sizeof(bfd_vma)) | |
424 | *(bfd_vma *)init[j].ptr = val; | |
425 | else abort(); | |
426 | } | |
427 | /* Restore the pointer. */ | |
428 | stat_ptr = save; | |
429 | ||
430 | if (pe.FileAlignment > | |
431 | pe.SectionAlignment) | |
432 | { | |
433 | einfo ("%P: warning, file alignment > section alignment.\n"); | |
434 | } | |
435 | } | |
436 | ||
437 | static void | |
438 | gld_${EMULATION_NAME}_after_open() | |
439 | { | |
440 | /* Pass the wacky PE command line options into the output bfd. | |
441 | FIXME: This should be done via a function, rather than by | |
442 | including an internal BFD header. */ | |
443 | if (!coff_data(output_bfd)->pe) | |
444 | { | |
445 | einfo ("%F%P: PE operations on non PE file.\n"); | |
446 | } | |
447 | ||
448 | pe_data(output_bfd)->pe_opthdr = pe; | |
449 | pe_data(output_bfd)->dll = init[DLLOFF].value; | |
450 | ||
451 | } | |
452 | \f | |
453 | /* Callback functions for qsort in sort_sections. */ | |
454 | ||
455 | static int | |
456 | sort_by_file_name (a, b) | |
457 | void *a; | |
458 | void *b; | |
459 | { | |
460 | lang_statement_union_type **ra = a; | |
461 | lang_statement_union_type **rb = b; | |
462 | int i, a_sec, b_sec; | |
463 | ||
464 | i = strcmp ((*ra)->input_section.ifile->the_bfd->my_archive->filename, | |
465 | (*rb)->input_section.ifile->the_bfd->my_archive->filename); | |
466 | if (i != 0) | |
467 | return i; | |
468 | ||
469 | i = strcmp ((*ra)->input_section.ifile->filename, | |
470 | (*rb)->input_section.ifile->filename); | |
471 | if (i != 0) | |
472 | return i; | |
473 | /* the tail idata4/5 are the only ones without relocs to an | |
474 | idata$6 section unless we are importing by ordinal, | |
475 | so sort them to last to terminate the IAT | |
476 | and HNT properly. if no reloc this one is import by ordinal | |
477 | so we have to sort by section contents */ | |
478 | ||
479 | if ( ((*ra)->input_section.section->reloc_count + (*rb)->input_section.section->reloc_count) ) | |
480 | { | |
481 | i = (((*ra)->input_section.section->reloc_count > | |
482 | (*rb)->input_section.section->reloc_count) ? -1 : 0); | |
483 | if ( i != 0) | |
484 | return i; | |
485 | ||
486 | return (((*ra)->input_section.section->reloc_count > | |
487 | (*rb)->input_section.section->reloc_count) ? 0 : 1); | |
488 | } | |
489 | else | |
490 | { | |
491 | if ( (strcmp( (*ra)->input_section.section->name, ".idata$6") == 0) ) | |
492 | return 0; /* don't sort .idata$6 or .idata$7 FIXME dlltool eliminate .idata$7 */ | |
493 | ||
494 | if (! bfd_get_section_contents ((*ra)->input_section.ifile->the_bfd, | |
495 | (*ra)->input_section.section, &a_sec, (file_ptr) 0, (bfd_size_type)sizeof(a_sec))) | |
496 | einfo ("%F%B: Can't read contents of section .idata: %E\n", | |
497 | (*ra)->input_section.ifile->the_bfd); | |
498 | ||
499 | if (! bfd_get_section_contents ((*rb)->input_section.ifile->the_bfd, | |
500 | (*rb)->input_section.section, &b_sec, (file_ptr) 0, (bfd_size_type)sizeof(b_sec) )) | |
501 | einfo ("%F%B: Can't read contents of section .idata: %E\n", | |
502 | (*rb)->input_section.ifile->the_bfd); | |
503 | ||
504 | i = ((a_sec < b_sec) ? -1 : 0); | |
505 | if ( i != 0) | |
506 | return i; | |
507 | return ((a_sec < b_sec) ? 0 : 1); | |
508 | } | |
509 | return 0; | |
510 | } | |
511 | ||
512 | static int | |
513 | sort_by_section_name (a, b) | |
514 | void *a; | |
515 | void *b; | |
516 | { | |
517 | lang_statement_union_type **ra = a; | |
518 | lang_statement_union_type **rb = b; | |
519 | int i; | |
520 | i = strcmp ((*ra)->input_section.section->name, | |
521 | (*rb)->input_section.section->name); | |
522 | /* this is a hack to make .stab and .stabstr last, so we don't have | |
523 | to fix strip/objcopy for .reloc sections. | |
524 | FIXME stripping images with a .rsrc section still needs to be fixed */ | |
525 | if ( i != 0) | |
526 | { | |
527 | if ((strncmp ((*ra)->input_section.section->name, ".stab", 5) == 0) | |
528 | && (strncmp ((*rb)->input_section.section->name, ".stab", 5) != 0)) | |
529 | return 1; | |
530 | return i; | |
531 | } | |
532 | return i; | |
533 | } | |
534 | ||
535 | /* Subroutine of sort_sections to a contiguous subset of a list of sections. | |
536 | NEXT_AFTER is the element after the last one to sort. | |
537 | The result is a pointer to the last element's "next" pointer. */ | |
538 | ||
539 | static lang_statement_union_type ** | |
540 | sort_sections_1 (startptr, next_after, count, sort_func) | |
541 | lang_statement_union_type **startptr,*next_after; | |
542 | int count; | |
543 | int (*sort_func) (); | |
544 | { | |
545 | lang_statement_union_type **vec; | |
546 | lang_statement_union_type *p; | |
547 | int i; | |
548 | lang_statement_union_type **ret; | |
549 | ||
550 | if (count == 0) | |
551 | return startptr; | |
552 | ||
553 | vec = ((lang_statement_union_type **) | |
554 | xmalloc (count * sizeof (lang_statement_union_type *))); | |
555 | ||
556 | for (p = *startptr, i = 0; i < count; i++, p = p->next) | |
557 | vec[i] = p; | |
558 | ||
559 | qsort (vec, count, sizeof (vec[0]), sort_func); | |
560 | ||
561 | /* Fill in the next pointers again. */ | |
562 | *startptr = vec[0]; | |
563 | for (i = 0; i < count - 1; i++) | |
564 | vec[i]->header.next = vec[i + 1]; | |
565 | vec[i]->header.next = next_after; | |
566 | ret = &vec[i]->header.next; | |
567 | free (vec); | |
568 | return ret; | |
569 | } | |
570 | ||
571 | /* Sort the .idata\$foo input sections of archives into filename order. | |
572 | The reason is so dlltool can arrange to have the pe dll import information | |
573 | generated correctly - the head of the list goes into dh.o, the tail into | |
574 | dt.o, and the guts into ds[nnnn].o. Note that this is only needed for the | |
575 | .idata section. | |
576 | FIXME: This may no longer be necessary with grouped sections. Instead of | |
577 | sorting on dh.o, ds[nnnn].o, dt.o, one could, for example, have dh.o use | |
578 | .idata\$4h, have ds[nnnn].o use .idata\$4s[nnnn], and have dt.o use .idata\$4t. | |
579 | This would have to be elaborated upon to handle multiple dll's | |
580 | [assuming such an eloboration is possible of course]. | |
581 | ||
582 | We also sort sections in '\$' wild statements. These are created by the | |
583 | place_orphans routine to implement grouped sections. */ | |
584 | ||
585 | static void | |
586 | sort_sections (s) | |
587 | lang_statement_union_type *s; | |
588 | { | |
589 | for (; s ; s = s->next) | |
590 | switch (s->header.type) | |
591 | { | |
592 | case lang_output_section_statement_enum: | |
593 | sort_sections (s->output_section_statement.children.head); | |
594 | break; | |
595 | case lang_wild_statement_enum: | |
596 | { | |
597 | lang_statement_union_type **p = &s->wild_statement.children.head; | |
598 | ||
599 | /* Is this the .idata section? */ | |
600 | if (s->wild_statement.section_name != NULL | |
601 | && strncmp (s->wild_statement.section_name, ".idata", 6) == 0) | |
602 | { | |
603 | /* Sort the children. We want to sort any objects in | |
604 | the same archive. In order to handle the case of | |
605 | including a single archive multiple times, we sort | |
606 | all the children by archive name and then by object | |
607 | name. After sorting them, we re-thread the pointer | |
608 | chain. */ | |
609 | ||
610 | while (*p) | |
611 | { | |
612 | lang_statement_union_type *start = *p; | |
613 | if (start->header.type != lang_input_section_enum | |
614 | || !start->input_section.ifile->the_bfd->my_archive) | |
615 | p = &(start->header.next); | |
616 | else | |
617 | { | |
618 | lang_statement_union_type *end; | |
619 | int count; | |
620 | ||
621 | for (end = start, count = 0; | |
622 | end && end->header.type == lang_input_section_enum; | |
623 | end = end->next) | |
624 | count++; | |
625 | ||
626 | p = sort_sections_1 (p, end, count, sort_by_file_name); | |
627 | } | |
628 | } | |
629 | break; | |
630 | } | |
631 | ||
632 | /* If this is a collection of grouped sections, sort them. | |
633 | The linker script must explicitly mention "*(.foo\$)" or | |
634 | "*(.foo\$*)". Don't sort them if \$ is not the last | |
635 | character (not sure if this is really useful, but it | |
636 | allows explicitly mentioning some \$ sections and letting | |
637 | the linker handle the rest). */ | |
638 | if (s->wild_statement.section_name != NULL) | |
639 | { | |
640 | char *q = strchr (s->wild_statement.section_name, '\$'); | |
641 | ||
642 | if (q != NULL | |
643 | && (q[1] == '\0' | |
644 | || (q[1] == '*' && q[2] == '\0'))) | |
645 | { | |
646 | lang_statement_union_type *end; | |
647 | int count; | |
648 | ||
649 | for (end = *p, count = 0; end; end = end->next) | |
650 | { | |
651 | if (end->header.type != lang_input_section_enum) | |
652 | abort (); | |
653 | count++; | |
654 | } | |
655 | (void) sort_sections_1 (p, end, count, sort_by_section_name); | |
656 | } | |
657 | break; | |
658 | } | |
659 | } | |
660 | break; | |
661 | default: | |
662 | break; | |
663 | } | |
664 | } | |
665 | ||
666 | static void | |
667 | gld_${EMULATION_NAME}_before_allocation() | |
668 | { | |
669 | extern lang_statement_list_type *stat_ptr; | |
670 | ||
671 | #ifdef TARGET_IS_ppcpe | |
672 | /* Here we rummage through the found bfds to collect toc information */ | |
673 | { | |
674 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
675 | { | |
676 | if (!ppc_process_before_allocation(is->the_bfd, &link_info)) | |
677 | { | |
678 | einfo("Errors encountered processing file %s\n", is->filename); | |
679 | } | |
680 | } | |
681 | } | |
682 | ||
683 | /* We have seen it all. Allocate it, and carry on */ | |
684 | ppc_allocate_toc_section (&link_info); | |
685 | #else | |
686 | #ifdef TARGET_IS_armpe | |
687 | /* FIXME: we should be able to set the size of the interworking stub | |
688 | section. | |
689 | ||
690 | Here we rummage through the found bfds to collect glue | |
691 | information. FIXME: should this be based on a command line | |
692 | option? krk@cygnus.com */ | |
693 | { | |
694 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
695 | { | |
696 | if (!arm_process_before_allocation (is->the_bfd, & link_info)) | |
697 | { | |
698 | einfo ("Errors encountered processing file %s", is->filename); | |
699 | } | |
700 | } | |
701 | } | |
702 | ||
703 | /* We have seen it all. Allocate it, and carry on */ | |
704 | arm_allocate_interworking_sections (& link_info); | |
705 | #endif /* TARGET_IS_armpe */ | |
706 | #endif /* TARGET_IS_ppcpe */ | |
707 | ||
708 | sort_sections (stat_ptr->head); | |
709 | } | |
710 | \f | |
711 | /* Place an orphan section. We use this to put sections with a '\$' in them | |
712 | into the right place. Any section with a '\$' in them (e.g. .text\$foo) | |
713 | gets mapped to the output section with everything from the '\$' on stripped | |
714 | (e.g. .text). | |
715 | See the Microsoft Portable Executable and Common Object File Format | |
716 | Specification 4.1, section 4.2, Grouped Sections. | |
717 | ||
718 | FIXME: This is now handled by the linker script using wildcards, | |
719 | but I'm leaving this here in case we want to enable it for sections | |
720 | which are not mentioned in the linker script. */ | |
721 | ||
722 | /*ARGSUSED*/ | |
723 | static boolean | |
724 | gld${EMULATION_NAME}_place_orphan (file, s) | |
725 | lang_input_statement_type *file; | |
726 | asection *s; | |
727 | { | |
728 | const char *secname; | |
729 | char *output_secname, *ps; | |
730 | lang_output_section_statement_type *os; | |
731 | lang_statement_union_type *l; | |
732 | ||
733 | if ((s->flags & SEC_ALLOC) == 0) | |
734 | return false; | |
735 | ||
736 | /* Don't process grouped sections unless doing a final link. | |
737 | If they're marked as COMDAT sections, we don't want .text\$foo to | |
738 | end up in .text and then have .text disappear because it's marked | |
739 | link-once-discard. */ | |
740 | if (link_info.relocateable) | |
741 | return false; | |
742 | ||
743 | secname = bfd_get_section_name (s->owner, s); | |
744 | ||
745 | /* Everything from the '\$' on gets deleted so don't allow '\$' as the | |
746 | first character. */ | |
747 | if (*secname == '\$') | |
748 | einfo ("%P%F: section %s has '\$' as first character\n", secname); | |
749 | if (strchr (secname + 1, '\$') == NULL) | |
750 | return false; | |
751 | ||
752 | /* Look up the output section. The Microsoft specs say sections names in | |
753 | image files never contain a '\$'. Fortunately, lang_..._lookup creates | |
754 | the section if it doesn't exist. */ | |
c7e40348 | 755 | output_secname = xstrdup (secname); |
252b5132 RH |
756 | ps = strchr (output_secname + 1, '\$'); |
757 | *ps = 0; | |
758 | os = lang_output_section_statement_lookup (output_secname); | |
759 | ||
760 | /* Find the '\$' wild statement for this section. We currently require the | |
761 | linker script to explicitly mention "*(.foo\$)". | |
762 | FIXME: ppcpe.sc has .CRT\$foo in the .rdata section. According to the | |
763 | Microsoft docs this isn't correct so it's not (currently) handled. */ | |
764 | ||
765 | ps[0] = '\$'; | |
766 | ps[1] = 0; | |
767 | for (l = os->children.head; l; l = l->next) | |
768 | { | |
769 | if (l->header.type == lang_wild_statement_enum | |
770 | && strcmp (l->wild_statement.section_name, output_secname) == 0) | |
771 | break; | |
772 | } | |
773 | ps[0] = 0; | |
774 | if (l == NULL) | |
775 | #if 1 | |
776 | einfo ("%P%F: *(%s\$) missing from linker script\n", output_secname); | |
777 | #else /* FIXME: This block is untried. It exists to convey the intent, | |
778 | should one decide to not require *(.foo\$) to appear in the linker | |
779 | script. */ | |
780 | { | |
781 | lang_wild_statement_type *new = new_stat (lang_wild_statement, | |
782 | &os->children); | |
783 | new->section_name = xmalloc (strlen (output_secname) + 2); | |
784 | sprintf (new->section_name, "%s\$", output_secname); | |
785 | new->filename = NULL; | |
786 | lang_list_init (&new->children); | |
787 | l = new; | |
788 | } | |
789 | #endif | |
790 | ||
791 | /* Link the input section in and we're done for now. | |
792 | The sections still have to be sorted, but that has to wait until | |
793 | all such sections have been processed by us. The sorting is done by | |
794 | sort_sections. */ | |
795 | wild_doit (&l->wild_statement.children, s, os, file); | |
796 | ||
797 | return true; | |
798 | } | |
799 | \f | |
800 | static char * | |
801 | gld_${EMULATION_NAME}_get_script(isfile) | |
802 | int *isfile; | |
803 | EOF | |
804 | # Scripts compiled in. | |
805 | # sed commands to quote an ld script as a C string. | |
597e2591 | 806 | sc="-f stringify.sed" |
252b5132 RH |
807 | |
808 | cat >>e${EMULATION_NAME}.c <<EOF | |
809 | { | |
810 | *isfile = 0; | |
811 | ||
812 | if (link_info.relocateable == true && config.build_constructors == true) | |
813 | return | |
814 | EOF | |
815 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c | |
816 | echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c | |
817 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c | |
818 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
819 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
820 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
821 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
822 | echo ' ; else return' >> e${EMULATION_NAME}.c | |
823 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
824 | echo '; }' >> e${EMULATION_NAME}.c | |
825 | ||
826 | cat >>e${EMULATION_NAME}.c <<EOF | |
827 | ||
828 | ||
829 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = | |
830 | { | |
831 | gld_${EMULATION_NAME}_before_parse, | |
832 | syslib_default, | |
833 | hll_default, | |
834 | after_parse_default, | |
835 | gld_${EMULATION_NAME}_after_open, | |
836 | after_allocation_default, | |
837 | set_output_arch_default, | |
838 | ldemul_default_target, | |
839 | gld_${EMULATION_NAME}_before_allocation, | |
840 | gld_${EMULATION_NAME}_get_script, | |
841 | "${EMULATION_NAME}", | |
842 | "${OUTPUT_FORMAT}", | |
843 | NULL, /* finish */ | |
844 | NULL, /* create output section statements */ | |
845 | NULL, /* open dynamic archive */ | |
846 | gld${EMULATION_NAME}_place_orphan, | |
847 | gld_${EMULATION_NAME}_set_symbols, | |
e1c47aa4 AM |
848 | gld_${EMULATION_NAME}_parse_args, |
849 | NULL, /* unrecognized file */ | |
850 | NULL, /* list options */ | |
40d109bf AM |
851 | NULL, /* recognized file */ |
852 | NULL /* find_potential_libraries */ | |
252b5132 RH |
853 | }; |
854 | EOF |