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252b5132 | 1 | /* Routines to help build PEI-format DLLs (Win32 etc) |
948f9114 | 2 | Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by DJ Delorie <dj@cygnus.com> |
4 | ||
5 | This file is part of GLD, the Gnu Linker. | |
6 | ||
7 | GLD is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GLD is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GLD; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "bfdlink.h" | |
25 | #include "libiberty.h" | |
3882b010 | 26 | #include "safe-ctype.h" |
252b5132 RH |
27 | |
28 | #include <time.h> | |
252b5132 RH |
29 | |
30 | #include "ld.h" | |
31 | #include "ldexp.h" | |
32 | #include "ldlang.h" | |
33 | #include "ldwrite.h" | |
34 | #include "ldmisc.h" | |
35 | #include "ldgram.h" | |
36 | #include "ldmain.h" | |
b71e2778 | 37 | #include "ldfile.h" |
252b5132 RH |
38 | #include "ldemul.h" |
39 | #include "coff/internal.h" | |
40 | #include "../bfd/libcoff.h" | |
41 | #include "deffile.h" | |
1069dd8d | 42 | #include "pe-dll.h" |
252b5132 | 43 | |
775cabad NC |
44 | /* This file turns a regular Windows PE image into a DLL. Because of |
45 | the complexity of this operation, it has been broken down into a | |
46 | number of separate modules which are all called by the main function | |
47 | at the end of this file. This function is not re-entrant and is | |
48 | normally only called once, so static variables are used to reduce | |
49 | the number of parameters and return values required. | |
50 | ||
51 | See also: ld/emultempl/pe.em. */ | |
52 | ||
53 | /* Auto-import feature by Paul Sokolovsky | |
54 | ||
55 | Quick facts: | |
56 | ||
57 | 1. With this feature on, DLL clients can import variables from DLL | |
58 | without any concern from their side (for example, without any source | |
59 | code modifications). | |
60 | ||
61 | 2. This is done completely in bounds of the PE specification (to be fair, | |
62 | there's a place where it pokes nose out of, but in practise it works). | |
63 | So, resulting module can be used with any other PE compiler/linker. | |
64 | ||
65 | 3. Auto-import is fully compatible with standard import method and they | |
66 | can be mixed together. | |
67 | ||
68 | 4. Overheads: space: 8 bytes per imported symbol, plus 20 for each | |
69 | reference to it; load time: negligible; virtual/physical memory: should be | |
70 | less than effect of DLL relocation, and I sincerely hope it doesn't affect | |
71 | DLL sharability (too much). | |
72 | ||
73 | Idea | |
74 | ||
75 | The obvious and only way to get rid of dllimport insanity is to make client | |
76 | access variable directly in the DLL, bypassing extra dereference. I.e., | |
77 | whenever client contains someting like | |
78 | ||
79 | mov dll_var,%eax, | |
80 | ||
81 | address of dll_var in the command should be relocated to point into loaded | |
82 | DLL. The aim is to make OS loader do so, and than make ld help with that. | |
83 | Import section of PE made following way: there's a vector of structures | |
84 | each describing imports from particular DLL. Each such structure points | |
85 | to two other parellel vectors: one holding imported names, and one which | |
86 | will hold address of corresponding imported name. So, the solution is | |
87 | de-vectorize these structures, making import locations be sparse and | |
88 | pointing directly into code. Before continuing, it is worth a note that, | |
89 | while authors strives to make PE act ELF-like, there're some other people | |
90 | make ELF act PE-like: elfvector, ;-) . | |
91 | ||
92 | Implementation | |
93 | ||
94 | For each reference of data symbol to be imported from DLL (to set of which | |
95 | belong symbols with name <sym>, if __imp_<sym> is found in implib), the | |
96 | import fixup entry is generated. That entry is of type | |
97 | IMAGE_IMPORT_DESCRIPTOR and stored in .idata$3 subsection. Each | |
98 | fixup entry contains pointer to symbol's address within .text section | |
99 | (marked with __fuN_<sym> symbol, where N is integer), pointer to DLL name | |
100 | (so, DLL name is referenced by multiple entries), and pointer to symbol | |
101 | name thunk. Symbol name thunk is singleton vector (__nm_th_<symbol>) | |
102 | pointing to IMAGE_IMPORT_BY_NAME structure (__nm_<symbol>) directly | |
103 | containing imported name. Here comes that "om the edge" problem mentioned | |
104 | above: PE specification rambles that name vector (OriginalFirstThunk) | |
105 | should run in parallel with addresses vector (FirstThunk), i.e. that they | |
106 | should have same number of elements and terminated with zero. We violate | |
107 | this, since FirstThunk points directly into machine code. But in practise, | |
108 | OS loader implemented the sane way: it goes thru OriginalFirstThunk and | |
109 | puts addresses to FirstThunk, not something else. It once again should be | |
110 | noted that dll and symbol name structures are reused across fixup entries | |
111 | and should be there anyway to support standard import stuff, so sustained | |
112 | overhead is 20 bytes per reference. Other question is whether having several | |
113 | IMAGE_IMPORT_DESCRIPTORS for the same DLL is possible. Answer is yes, it is | |
114 | done even by native compiler/linker (libth32's functions are in fact reside | |
115 | in windows9x kernel32.dll, so if you use it, you have two | |
116 | IMAGE_IMPORT_DESCRIPTORS for kernel32.dll). Yet other question is whether | |
117 | referencing the same PE structures several times is valid. The answer is why | |
118 | not, prohibitting that (detecting violation) would require more work on | |
119 | behalf of loader than not doing it. | |
120 | ||
121 | See also: ld/emultempl/pe.em. */ | |
b044cda1 CW |
122 | |
123 | static void | |
775cabad | 124 | add_bfd_to_link PARAMS ((bfd *, const char *, struct bfd_link_info *)); |
b044cda1 | 125 | |
775cabad | 126 | /* For emultempl/pe.em. */ |
252b5132 | 127 | |
775cabad | 128 | def_file * pe_def_file = 0; |
252b5132 RH |
129 | int pe_dll_export_everything = 0; |
130 | int pe_dll_do_default_excludes = 1; | |
131 | int pe_dll_kill_ats = 0; | |
132 | int pe_dll_stdcall_aliases = 0; | |
870df5dc NC |
133 | int pe_dll_warn_dup_exports = 0; |
134 | int pe_dll_compat_implib = 0; | |
b044cda1 | 135 | int pe_dll_extra_pe_debug = 0; |
252b5132 | 136 | |
775cabad | 137 | /* Static variables and types. */ |
252b5132 RH |
138 | |
139 | static bfd_vma image_base; | |
252b5132 RH |
140 | static bfd *filler_bfd; |
141 | static struct sec *edata_s, *reloc_s; | |
142 | static unsigned char *edata_d, *reloc_d; | |
1069dd8d | 143 | static size_t edata_sz, reloc_sz; |
252b5132 | 144 | |
775cabad NC |
145 | typedef struct |
146 | { | |
147 | char *target_name; | |
148 | char *object_target; | |
149 | unsigned int imagebase_reloc; | |
150 | int pe_arch; | |
151 | int bfd_arch; | |
152 | int underscored; | |
153 | } | |
154 | pe_details_type; | |
155 | ||
156 | typedef struct | |
157 | { | |
158 | char *name; | |
159 | int len; | |
160 | } | |
161 | autofilter_entry_type; | |
b044cda1 | 162 | |
c6c37250 | 163 | #define PE_ARCH_i386 1 |
344a211f NC |
164 | #define PE_ARCH_sh 2 |
165 | #define PE_ARCH_mips 3 | |
166 | #define PE_ARCH_arm 4 | |
775cabad | 167 | #define PE_ARCH_arm_epoc 5 |
c6c37250 | 168 | |
775cabad NC |
169 | static pe_details_type pe_detail_list[] = |
170 | { | |
c6c37250 DD |
171 | { |
172 | "pei-i386", | |
173 | "pe-i386", | |
174 | 7 /* R_IMAGEBASE */, | |
175 | PE_ARCH_i386, | |
176 | bfd_arch_i386, | |
177 | 1 | |
178 | }, | |
344a211f NC |
179 | { |
180 | "pei-shl", | |
181 | "pe-shl", | |
182 | 16 /* R_SH_IMAGEBASE */, | |
183 | PE_ARCH_sh, | |
184 | bfd_arch_sh, | |
185 | 1 | |
186 | }, | |
187 | { | |
188 | "pei-mips", | |
189 | "pe-mips", | |
190 | 34 /* MIPS_R_RVA */, | |
191 | PE_ARCH_mips, | |
192 | bfd_arch_mips, | |
193 | 0 | |
194 | }, | |
195 | { | |
196 | "pei-arm-little", | |
197 | "pe-arm-little", | |
198 | 11 /* ARM_RVA32 */, | |
199 | PE_ARCH_arm, | |
200 | bfd_arch_arm, | |
201 | 0 | |
202 | }, | |
775cabad NC |
203 | { |
204 | "epoc-pei-arm-little", | |
205 | "epoc-pe-arm-little", | |
206 | 11 /* ARM_RVA32 */, | |
207 | PE_ARCH_arm_epoc, | |
208 | bfd_arch_arm, | |
209 | 0 | |
210 | }, | |
1069dd8d | 211 | { NULL, NULL, 0, 0, 0, 0 } |
c6c37250 DD |
212 | }; |
213 | ||
214 | static pe_details_type *pe_details; | |
215 | ||
775cabad NC |
216 | static autofilter_entry_type autofilter_symbollist[] = |
217 | { | |
b044cda1 CW |
218 | { "DllMain@12", 10 }, |
219 | { "DllEntryPoint@0", 15 }, | |
220 | { "DllMainCRTStartup@12", 20 }, | |
221 | { "_cygwin_dll_entry@12", 20 }, | |
222 | { "_cygwin_crt0_common@8", 21 }, | |
223 | { "_cygwin_noncygwin_dll_entry@12", 30 }, | |
224 | { "impure_ptr", 10 }, | |
225 | { NULL, 0 } | |
226 | }; | |
775cabad NC |
227 | |
228 | /* Do not specify library suffix explicitly, to allow for dllized versions. */ | |
229 | static autofilter_entry_type autofilter_liblist[] = | |
230 | { | |
b044cda1 CW |
231 | { "libgcc.", 7 }, |
232 | { "libstdc++.", 10 }, | |
233 | { "libmingw32.", 11 }, | |
234 | { NULL, 0 } | |
235 | }; | |
775cabad NC |
236 | |
237 | static autofilter_entry_type autofilter_objlist[] = | |
238 | { | |
b044cda1 CW |
239 | { "crt0.o", 6 }, |
240 | { "crt1.o", 6 }, | |
241 | { "crt2.o", 6 }, | |
5b784096 DD |
242 | { "dllcrt1.o", 9 }, |
243 | { "dllcrt2.o", 9 }, | |
663dd378 DD |
244 | { "gcrt1.o", 7 }, |
245 | { "gcrt2.o", 7 }, | |
b044cda1 CW |
246 | { NULL, 0 } |
247 | }; | |
775cabad NC |
248 | |
249 | static autofilter_entry_type autofilter_symbolprefixlist[] = | |
250 | { | |
251 | /* { "__imp_", 6 }, */ | |
252 | /* Do __imp_ explicitly to save time. */ | |
b044cda1 CW |
253 | { "__rtti_", 7 }, |
254 | { "__builtin_", 10 }, | |
775cabad NC |
255 | /* Don't export symbols specifying internal DLL layout. */ |
256 | { "_head_", 6 }, | |
b044cda1 CW |
257 | { "_fmode", 6 }, |
258 | { "_impure_ptr", 11 }, | |
259 | { "cygwin_attach_dll", 17 }, | |
260 | { "cygwin_premain0", 15 }, | |
261 | { "cygwin_premain1", 15 }, | |
262 | { "cygwin_premain2", 15 }, | |
263 | { "cygwin_premain3", 15 }, | |
264 | { "environ", 7 }, | |
265 | { NULL, 0 } | |
266 | }; | |
775cabad NC |
267 | |
268 | static autofilter_entry_type autofilter_symbolsuffixlist[] = | |
269 | { | |
b044cda1 CW |
270 | { "_iname", 6 }, |
271 | { NULL, 0 } | |
272 | }; | |
273 | ||
c6c37250 DD |
274 | #define U(str) (pe_details->underscored ? "_" str : str) |
275 | ||
948f9114 AJ |
276 | static int reloc_sort PARAMS ((const void *, const void *)); |
277 | static int pe_export_sort PARAMS ((const void *, const void *)); | |
278 | static int auto_export PARAMS ((bfd *, def_file *, const char *)); | |
279 | static void process_def_file PARAMS ((bfd *, struct bfd_link_info *)); | |
280 | static void build_filler_bfd PARAMS ((int)); | |
281 | static void generate_edata PARAMS ((bfd *, struct bfd_link_info *)); | |
282 | static void fill_exported_offsets PARAMS ((bfd *, struct bfd_link_info *)); | |
283 | static void fill_edata PARAMS ((bfd *, struct bfd_link_info *)); | |
284 | static void generate_reloc PARAMS ((bfd *, struct bfd_link_info *)); | |
285 | static void quoteput PARAMS ((char *, FILE *, int)); | |
286 | static asection *quick_section PARAMS ((bfd *, const char *, int, int)); | |
287 | static void quick_symbol | |
db09f25b AM |
288 | PARAMS ((bfd *, const char *, const char *, const char *, |
289 | asection *, int, int)); | |
948f9114 AJ |
290 | static void quick_reloc PARAMS ((bfd *, int, int, int)); |
291 | static bfd *make_head PARAMS ((bfd *)); | |
292 | static bfd *make_tail PARAMS ((bfd *)); | |
293 | static bfd *make_one PARAMS ((def_file_export *, bfd *)); | |
db09f25b | 294 | static bfd *make_singleton_name_thunk PARAMS ((const char *, bfd *)); |
948f9114 | 295 | static char *make_import_fixup_mark PARAMS ((arelent *)); |
db09f25b AM |
296 | static bfd *make_import_fixup_entry |
297 | PARAMS ((const char *, const char *, const char *, bfd *)); | |
948f9114 AJ |
298 | static unsigned int pe_get16 PARAMS ((bfd *, int)); |
299 | static unsigned int pe_get32 PARAMS ((bfd *, int)); | |
300 | static unsigned int pe_as32 PARAMS ((void *)); | |
301 | ||
c6c37250 DD |
302 | void |
303 | pe_dll_id_target (target) | |
1069dd8d | 304 | const char *target; |
c6c37250 DD |
305 | { |
306 | int i; | |
775cabad | 307 | |
d643799d | 308 | for (i = 0; pe_detail_list[i].target_name; i++) |
9d68bc82 DD |
309 | if (strcmp (pe_detail_list[i].target_name, target) == 0 |
310 | || strcmp (pe_detail_list[i].object_target, target) == 0) | |
c6c37250 | 311 | { |
d643799d | 312 | pe_details = pe_detail_list + i; |
c6c37250 DD |
313 | return; |
314 | } | |
315 | einfo (_("%XUnsupported PEI architecture: %s\n"), target); | |
316 | exit (1); | |
317 | } | |
318 | ||
775cabad NC |
319 | /* Helper functions for qsort. Relocs must be sorted so that we can write |
320 | them out by pages. */ | |
252b5132 | 321 | |
775cabad NC |
322 | typedef struct |
323 | { | |
324 | bfd_vma vma; | |
325 | char type; | |
326 | short extra; | |
327 | } | |
328 | reloc_data_type; | |
c6c37250 | 329 | |
252b5132 RH |
330 | static int |
331 | reloc_sort (va, vb) | |
332 | const void *va, *vb; | |
333 | { | |
c6c37250 DD |
334 | bfd_vma a = ((reloc_data_type *) va)->vma; |
335 | bfd_vma b = ((reloc_data_type *) vb)->vma; | |
775cabad | 336 | |
c6c37250 | 337 | return (a > b) ? 1 : ((a < b) ? -1 : 0); |
252b5132 RH |
338 | } |
339 | ||
340 | static int | |
341 | pe_export_sort (va, vb) | |
342 | const void *va, *vb; | |
343 | { | |
344 | def_file_export *a = (def_file_export *) va; | |
345 | def_file_export *b = (def_file_export *) vb; | |
775cabad | 346 | |
252b5132 RH |
347 | return strcmp (a->name, b->name); |
348 | } | |
349 | ||
775cabad | 350 | /* Read and process the .DEF file. */ |
252b5132 RH |
351 | |
352 | /* These correspond to the entries in pe_def_file->exports[]. I use | |
353 | exported_symbol_sections[i] to tag whether or not the symbol was | |
5cc18311 | 354 | defined, since we can't export symbols we don't have. */ |
252b5132 RH |
355 | |
356 | static bfd_vma *exported_symbol_offsets; | |
357 | static struct sec **exported_symbol_sections; | |
252b5132 RH |
358 | static int export_table_size; |
359 | static int count_exported; | |
360 | static int count_exported_byname; | |
361 | static int count_with_ordinals; | |
362 | static const char *dll_name; | |
363 | static int min_ordinal, max_ordinal; | |
364 | static int *exported_symbols; | |
365 | ||
775cabad NC |
366 | typedef struct exclude_list_struct |
367 | { | |
368 | char *string; | |
369 | struct exclude_list_struct *next; | |
370 | } | |
371 | exclude_list_struct; | |
86b1cc60 | 372 | |
252b5132 RH |
373 | static struct exclude_list_struct *excludes = 0; |
374 | ||
375 | void | |
376 | pe_dll_add_excludes (new_excludes) | |
377 | const char *new_excludes; | |
378 | { | |
379 | char *local_copy; | |
380 | char *exclude_string; | |
381 | ||
382 | local_copy = xstrdup (new_excludes); | |
383 | ||
384 | exclude_string = strtok (local_copy, ",:"); | |
385 | for (; exclude_string; exclude_string = strtok (NULL, ",:")) | |
386 | { | |
387 | struct exclude_list_struct *new_exclude; | |
388 | ||
389 | new_exclude = ((struct exclude_list_struct *) | |
390 | xmalloc (sizeof (struct exclude_list_struct))); | |
391 | new_exclude->string = (char *) xmalloc (strlen (exclude_string) + 1); | |
392 | strcpy (new_exclude->string, exclude_string); | |
393 | new_exclude->next = excludes; | |
394 | excludes = new_exclude; | |
395 | } | |
396 | ||
397 | free (local_copy); | |
398 | } | |
399 | ||
775cabad NC |
400 | /* abfd is a bfd containing n (or NULL) |
401 | It can be used for contextual checks. */ | |
402 | ||
252b5132 | 403 | static int |
b044cda1 CW |
404 | auto_export (abfd, d, n) |
405 | bfd *abfd; | |
252b5132 RH |
406 | def_file *d; |
407 | const char *n; | |
408 | { | |
409 | int i; | |
410 | struct exclude_list_struct *ex; | |
b044cda1 CW |
411 | autofilter_entry_type *afptr; |
412 | ||
775cabad | 413 | /* We should not re-export imported stuff. */ |
b044cda1 CW |
414 | if (strncmp (n, "_imp__", 6) == 0) |
415 | return 0; | |
416 | ||
252b5132 RH |
417 | for (i = 0; i < d->num_exports; i++) |
418 | if (strcmp (d->exports[i].name, n) == 0) | |
419 | return 0; | |
775cabad | 420 | |
252b5132 RH |
421 | if (pe_dll_do_default_excludes) |
422 | { | |
663dd378 | 423 | const char * p; |
775cabad NC |
424 | int len; |
425 | ||
b044cda1 | 426 | if (pe_dll_extra_pe_debug) |
775cabad NC |
427 | printf ("considering exporting: %s, abfd=%p, abfd->my_arc=%p\n", |
428 | n, abfd, abfd->my_archive); | |
b044cda1 CW |
429 | |
430 | /* First of all, make context checks: | |
775cabad | 431 | Don't export anything from libgcc. */ |
b044cda1 CW |
432 | if (abfd && abfd->my_archive) |
433 | { | |
434 | afptr = autofilter_liblist; | |
775cabad | 435 | |
b044cda1 CW |
436 | while (afptr->name) |
437 | { | |
438 | if (strstr (abfd->my_archive->filename, afptr->name)) | |
439 | return 0; | |
440 | afptr++; | |
441 | } | |
442 | } | |
443 | ||
775cabad | 444 | /* Next, exclude symbols from certain startup objects. */ |
775cabad | 445 | |
663dd378 DD |
446 | if (abfd && (p = lbasename (abfd->filename)) ) |
447 | { | |
448 | afptr = autofilter_objlist; | |
775cabad NC |
449 | while (afptr->name) |
450 | { | |
663dd378 | 451 | if ( strcmp (p, afptr->name) == 0 ) |
775cabad | 452 | return 0; |
775cabad | 453 | afptr ++; |
663dd378 | 454 | } |
775cabad | 455 | } |
b044cda1 CW |
456 | |
457 | /* Don't try to blindly exclude all symbols | |
458 | that begin with '__'; this was tried and | |
775cabad | 459 | it is too restrictive. */ |
b044cda1 | 460 | |
775cabad | 461 | /* Then, exclude specific symbols. */ |
b044cda1 CW |
462 | afptr = autofilter_symbollist; |
463 | while (afptr->name) | |
464 | { | |
465 | if (strcmp (n, afptr->name) == 0) | |
466 | return 0; | |
775cabad NC |
467 | |
468 | afptr ++; | |
b044cda1 CW |
469 | } |
470 | ||
775cabad | 471 | /* Next, exclude symbols starting with ... */ |
b044cda1 CW |
472 | afptr = autofilter_symbolprefixlist; |
473 | while (afptr->name) | |
474 | { | |
475 | if (strncmp (n, afptr->name, afptr->len) == 0) | |
476 | return 0; | |
775cabad NC |
477 | |
478 | afptr ++; | |
b044cda1 CW |
479 | } |
480 | ||
775cabad NC |
481 | /* Finally, exclude symbols ending with ... */ |
482 | len = strlen (n); | |
483 | afptr = autofilter_symbolsuffixlist; | |
484 | while (afptr->name) | |
485 | { | |
486 | if ((len >= afptr->len) && | |
487 | /* Add 1 to insure match with trailing '\0'. */ | |
488 | strncmp (n + len - afptr->len, afptr->name, | |
489 | afptr->len + 1) == 0) | |
490 | return 0; | |
491 | ||
492 | afptr ++; | |
493 | } | |
252b5132 | 494 | } |
775cabad | 495 | |
252b5132 RH |
496 | for (ex = excludes; ex; ex = ex->next) |
497 | if (strcmp (n, ex->string) == 0) | |
498 | return 0; | |
775cabad | 499 | |
252b5132 RH |
500 | return 1; |
501 | } | |
502 | ||
503 | static void | |
504 | process_def_file (abfd, info) | |
1069dd8d | 505 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
506 | struct bfd_link_info *info; |
507 | { | |
508 | int i, j; | |
509 | struct bfd_link_hash_entry *blhe; | |
510 | bfd *b; | |
511 | struct sec *s; | |
d643799d | 512 | def_file_export *e = 0; |
252b5132 RH |
513 | |
514 | if (!pe_def_file) | |
515 | pe_def_file = def_file_empty (); | |
516 | ||
517 | /* First, run around to all the objects looking for the .drectve | |
86b1cc60 | 518 | sections, and push those into the def file too. */ |
252b5132 RH |
519 | for (b = info->input_bfds; b; b = b->link_next) |
520 | { | |
521 | s = bfd_get_section_by_name (b, ".drectve"); | |
522 | if (s) | |
523 | { | |
524 | int size = bfd_get_section_size_before_reloc (s); | |
525 | char *buf = xmalloc (size); | |
775cabad | 526 | |
252b5132 RH |
527 | bfd_get_section_contents (b, s, buf, 0, size); |
528 | def_file_add_directive (pe_def_file, buf, size); | |
529 | free (buf); | |
530 | } | |
531 | } | |
532 | ||
86b1cc60 | 533 | /* Now, maybe export everything else the default way. */ |
252b5132 RH |
534 | if (pe_dll_export_everything || pe_def_file->num_exports == 0) |
535 | { | |
536 | for (b = info->input_bfds; b; b = b->link_next) | |
537 | { | |
538 | asymbol **symbols; | |
539 | int nsyms, symsize; | |
540 | ||
541 | symsize = bfd_get_symtab_upper_bound (b); | |
542 | symbols = (asymbol **) xmalloc (symsize); | |
543 | nsyms = bfd_canonicalize_symtab (b, symbols); | |
544 | ||
545 | for (j = 0; j < nsyms; j++) | |
546 | { | |
d643799d | 547 | /* We should export symbols which are either global or not |
b044cda1 | 548 | anything at all. (.bss data is the latter) |
775cabad | 549 | We should not export undefined symbols. */ |
b044cda1 CW |
550 | if (symbols[j]->section != &bfd_und_section |
551 | && ((symbols[j]->flags & BSF_GLOBAL) | |
552 | || (symbols[j]->flags == BFD_FORT_COMM_DEFAULT_VALUE))) | |
252b5132 RH |
553 | { |
554 | const char *sn = symbols[j]->name; | |
b044cda1 | 555 | |
775cabad | 556 | /* We should not re-export imported stuff. */ |
b044cda1 CW |
557 | { |
558 | char *name = (char *) xmalloc (strlen (sn) + 2 + 6); | |
559 | sprintf (name, "%s%s", U("_imp_"), sn); | |
775cabad | 560 | |
b044cda1 CW |
561 | blhe = bfd_link_hash_lookup (info->hash, name, |
562 | false, false, false); | |
563 | free (name); | |
564 | ||
565 | if (blhe && blhe->type == bfd_link_hash_defined) | |
566 | continue; | |
567 | } | |
568 | ||
252b5132 RH |
569 | if (*sn == '_') |
570 | sn++; | |
775cabad | 571 | |
b044cda1 CW |
572 | if (auto_export (b, pe_def_file, sn)) |
573 | { | |
574 | def_file_export *p; | |
575 | p=def_file_add_export (pe_def_file, sn, 0, -1); | |
775cabad | 576 | /* Fill data flag properly, from dlltool.c. */ |
b044cda1 CW |
577 | p->flag_data = !(symbols[j]->flags & BSF_FUNCTION); |
578 | } | |
252b5132 RH |
579 | } |
580 | } | |
581 | } | |
582 | } | |
583 | ||
584 | #undef NE | |
585 | #define NE pe_def_file->num_exports | |
586 | ||
86b1cc60 | 587 | /* Canonicalize the export list. */ |
252b5132 RH |
588 | if (pe_dll_kill_ats) |
589 | { | |
590 | for (i = 0; i < NE; i++) | |
591 | { | |
592 | if (strchr (pe_def_file->exports[i].name, '@')) | |
593 | { | |
86b1cc60 KH |
594 | /* This will preserve internal_name, which may have been |
595 | pointing to the same memory as name, or might not | |
596 | have. */ | |
252b5132 | 597 | char *tmp = xstrdup (pe_def_file->exports[i].name); |
775cabad | 598 | |
252b5132 RH |
599 | *(strchr (tmp, '@')) = 0; |
600 | pe_def_file->exports[i].name = tmp; | |
601 | } | |
602 | } | |
603 | } | |
604 | ||
605 | if (pe_dll_stdcall_aliases) | |
606 | { | |
607 | for (i = 0; i < NE; i++) | |
608 | { | |
609 | if (strchr (pe_def_file->exports[i].name, '@')) | |
610 | { | |
611 | char *tmp = xstrdup (pe_def_file->exports[i].name); | |
775cabad | 612 | |
252b5132 | 613 | *(strchr (tmp, '@')) = 0; |
b044cda1 | 614 | if (auto_export (NULL, pe_def_file, tmp)) |
252b5132 | 615 | def_file_add_export (pe_def_file, tmp, |
b044cda1 CW |
616 | pe_def_file->exports[i].internal_name, |
617 | -1); | |
252b5132 RH |
618 | else |
619 | free (tmp); | |
620 | } | |
621 | } | |
622 | } | |
623 | ||
86b1cc60 KH |
624 | /* Convenience, but watch out for it changing. */ |
625 | e = pe_def_file->exports; | |
252b5132 RH |
626 | |
627 | exported_symbol_offsets = (bfd_vma *) xmalloc (NE * sizeof (bfd_vma)); | |
628 | exported_symbol_sections = (struct sec **) xmalloc (NE * sizeof (struct sec *)); | |
629 | ||
630 | memset (exported_symbol_sections, 0, NE * sizeof (struct sec *)); | |
631 | max_ordinal = 0; | |
632 | min_ordinal = 65536; | |
633 | count_exported = 0; | |
634 | count_exported_byname = 0; | |
635 | count_with_ordinals = 0; | |
636 | ||
637 | qsort (pe_def_file->exports, NE, sizeof (pe_def_file->exports[0]), pe_export_sort); | |
638 | for (i = 0, j = 0; i < NE; i++) | |
639 | { | |
640 | if (i > 0 && strcmp (e[i].name, e[i - 1].name) == 0) | |
641 | { | |
870df5dc | 642 | /* This is a duplicate. */ |
252b5132 RH |
643 | if (e[j - 1].ordinal != -1 |
644 | && e[i].ordinal != -1 | |
645 | && e[j - 1].ordinal != e[i].ordinal) | |
646 | { | |
870df5dc NC |
647 | if (pe_dll_warn_dup_exports) |
648 | /* xgettext:c-format */ | |
486e80e2 | 649 | einfo (_("%XError, duplicate EXPORT with ordinals: %s (%d vs %d)\n"), |
870df5dc | 650 | e[j - 1].name, e[j - 1].ordinal, e[i].ordinal); |
252b5132 RH |
651 | } |
652 | else | |
653 | { | |
870df5dc NC |
654 | if (pe_dll_warn_dup_exports) |
655 | /* xgettext:c-format */ | |
656 | einfo (_("Warning, duplicate EXPORT: %s\n"), | |
657 | e[j - 1].name); | |
252b5132 | 658 | } |
775cabad | 659 | |
486e80e2 | 660 | if (e[i].ordinal != -1) |
252b5132 RH |
661 | e[j - 1].ordinal = e[i].ordinal; |
662 | e[j - 1].flag_private |= e[i].flag_private; | |
663 | e[j - 1].flag_constant |= e[i].flag_constant; | |
664 | e[j - 1].flag_noname |= e[i].flag_noname; | |
665 | e[j - 1].flag_data |= e[i].flag_data; | |
666 | } | |
667 | else | |
668 | { | |
669 | if (i != j) | |
670 | e[j] = e[i]; | |
671 | j++; | |
672 | } | |
673 | } | |
674 | pe_def_file->num_exports = j; /* == NE */ | |
675 | ||
676 | for (i = 0; i < NE; i++) | |
677 | { | |
678 | char *name = (char *) xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2); | |
775cabad | 679 | |
c6c37250 DD |
680 | if (pe_details->underscored) |
681 | { | |
682 | *name = '_'; | |
683 | strcpy (name + 1, pe_def_file->exports[i].internal_name); | |
684 | } | |
685 | else | |
686 | strcpy (name, pe_def_file->exports[i].internal_name); | |
252b5132 RH |
687 | |
688 | blhe = bfd_link_hash_lookup (info->hash, | |
689 | name, | |
690 | false, false, true); | |
691 | ||
8a5b676c | 692 | if (blhe |
d643799d | 693 | && (blhe->type == bfd_link_hash_defined |
8a5b676c | 694 | || (blhe->type == bfd_link_hash_common))) |
252b5132 RH |
695 | { |
696 | count_exported++; | |
697 | if (!pe_def_file->exports[i].flag_noname) | |
698 | count_exported_byname++; | |
8a5b676c DD |
699 | |
700 | /* Only fill in the sections. The actual offsets are computed | |
701 | in fill_exported_offsets() after common symbols are laid | |
702 | out. */ | |
d643799d | 703 | if (blhe->type == bfd_link_hash_defined) |
8a5b676c DD |
704 | exported_symbol_sections[i] = blhe->u.def.section; |
705 | else | |
706 | exported_symbol_sections[i] = blhe->u.c.p->section; | |
5cc18311 | 707 | |
252b5132 RH |
708 | if (pe_def_file->exports[i].ordinal != -1) |
709 | { | |
710 | if (max_ordinal < pe_def_file->exports[i].ordinal) | |
711 | max_ordinal = pe_def_file->exports[i].ordinal; | |
712 | if (min_ordinal > pe_def_file->exports[i].ordinal) | |
713 | min_ordinal = pe_def_file->exports[i].ordinal; | |
714 | count_with_ordinals++; | |
715 | } | |
716 | } | |
717 | else if (blhe && blhe->type == bfd_link_hash_undefined) | |
718 | { | |
719 | /* xgettext:c-format */ | |
720 | einfo (_("%XCannot export %s: symbol not defined\n"), | |
721 | pe_def_file->exports[i].internal_name); | |
722 | } | |
723 | else if (blhe) | |
724 | { | |
725 | /* xgettext:c-format */ | |
726 | einfo (_("%XCannot export %s: symbol wrong type (%d vs %d)\n"), | |
727 | pe_def_file->exports[i].internal_name, | |
728 | blhe->type, bfd_link_hash_defined); | |
729 | } | |
730 | else | |
731 | { | |
732 | /* xgettext:c-format */ | |
733 | einfo (_("%XCannot export %s: symbol not found\n"), | |
734 | pe_def_file->exports[i].internal_name); | |
735 | } | |
736 | free (name); | |
737 | } | |
738 | } | |
739 | ||
775cabad | 740 | /* Build the bfd that will contain .edata and .reloc sections. */ |
252b5132 RH |
741 | |
742 | static void | |
c6c37250 DD |
743 | build_filler_bfd (include_edata) |
744 | int include_edata; | |
252b5132 RH |
745 | { |
746 | lang_input_statement_type *filler_file; | |
747 | filler_file = lang_add_input_file ("dll stuff", | |
748 | lang_input_file_is_fake_enum, | |
749 | NULL); | |
750 | filler_file->the_bfd = filler_bfd = bfd_create ("dll stuff", output_bfd); | |
751 | if (filler_bfd == NULL | |
752 | || !bfd_set_arch_mach (filler_bfd, | |
753 | bfd_get_arch (output_bfd), | |
754 | bfd_get_mach (output_bfd))) | |
755 | { | |
756 | einfo ("%X%P: can not create BFD %E\n"); | |
757 | return; | |
758 | } | |
759 | ||
c6c37250 | 760 | if (include_edata) |
252b5132 | 761 | { |
c6c37250 DD |
762 | edata_s = bfd_make_section_old_way (filler_bfd, ".edata"); |
763 | if (edata_s == NULL | |
764 | || !bfd_set_section_flags (filler_bfd, edata_s, | |
765 | (SEC_HAS_CONTENTS | |
766 | | SEC_ALLOC | |
767 | | SEC_LOAD | |
768 | | SEC_KEEP | |
769 | | SEC_IN_MEMORY))) | |
770 | { | |
771 | einfo ("%X%P: can not create .edata section: %E\n"); | |
772 | return; | |
773 | } | |
774 | bfd_set_section_size (filler_bfd, edata_s, edata_sz); | |
252b5132 | 775 | } |
252b5132 RH |
776 | |
777 | reloc_s = bfd_make_section_old_way (filler_bfd, ".reloc"); | |
778 | if (reloc_s == NULL | |
779 | || !bfd_set_section_flags (filler_bfd, reloc_s, | |
780 | (SEC_HAS_CONTENTS | |
781 | | SEC_ALLOC | |
782 | | SEC_LOAD | |
783 | | SEC_KEEP | |
784 | | SEC_IN_MEMORY))) | |
785 | { | |
786 | einfo ("%X%P: can not create .reloc section: %E\n"); | |
787 | return; | |
788 | } | |
775cabad | 789 | |
252b5132 RH |
790 | bfd_set_section_size (filler_bfd, reloc_s, 0); |
791 | ||
792 | ldlang_add_file (filler_file); | |
793 | } | |
794 | ||
775cabad | 795 | /* Gather all the exported symbols and build the .edata section. */ |
252b5132 RH |
796 | |
797 | static void | |
798 | generate_edata (abfd, info) | |
799 | bfd *abfd; | |
1069dd8d | 800 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
801 | { |
802 | int i, next_ordinal; | |
803 | int name_table_size = 0; | |
804 | const char *dlnp; | |
805 | ||
806 | /* First, we need to know how many exported symbols there are, | |
5cc18311 | 807 | and what the range of ordinals is. */ |
252b5132 | 808 | if (pe_def_file->name) |
775cabad | 809 | dll_name = pe_def_file->name; |
252b5132 RH |
810 | else |
811 | { | |
812 | dll_name = abfd->filename; | |
775cabad | 813 | |
252b5132 | 814 | for (dlnp = dll_name; *dlnp; dlnp++) |
775cabad NC |
815 | if (*dlnp == '\\' || *dlnp == '/' || *dlnp == ':') |
816 | dll_name = dlnp + 1; | |
252b5132 RH |
817 | } |
818 | ||
819 | if (count_with_ordinals && max_ordinal > count_exported) | |
820 | { | |
821 | if (min_ordinal > max_ordinal - count_exported + 1) | |
822 | min_ordinal = max_ordinal - count_exported + 1; | |
823 | } | |
824 | else | |
825 | { | |
826 | min_ordinal = 1; | |
827 | max_ordinal = count_exported; | |
828 | } | |
252b5132 | 829 | |
775cabad | 830 | export_table_size = max_ordinal - min_ordinal + 1; |
252b5132 RH |
831 | exported_symbols = (int *) xmalloc (export_table_size * sizeof (int)); |
832 | for (i = 0; i < export_table_size; i++) | |
833 | exported_symbols[i] = -1; | |
834 | ||
86b1cc60 | 835 | /* Now we need to assign ordinals to those that don't have them. */ |
252b5132 RH |
836 | for (i = 0; i < NE; i++) |
837 | { | |
838 | if (exported_symbol_sections[i]) | |
839 | { | |
840 | if (pe_def_file->exports[i].ordinal != -1) | |
841 | { | |
842 | int ei = pe_def_file->exports[i].ordinal - min_ordinal; | |
843 | int pi = exported_symbols[ei]; | |
775cabad | 844 | |
252b5132 RH |
845 | if (pi != -1) |
846 | { | |
847 | /* xgettext:c-format */ | |
486e80e2 | 848 | einfo (_("%XError, ordinal used twice: %d (%s vs %s)\n"), |
252b5132 RH |
849 | pe_def_file->exports[i].ordinal, |
850 | pe_def_file->exports[i].name, | |
851 | pe_def_file->exports[pi].name); | |
852 | } | |
853 | exported_symbols[ei] = i; | |
854 | } | |
855 | name_table_size += strlen (pe_def_file->exports[i].name) + 1; | |
856 | } | |
857 | } | |
858 | ||
859 | next_ordinal = min_ordinal; | |
860 | for (i = 0; i < NE; i++) | |
861 | if (exported_symbol_sections[i]) | |
862 | if (pe_def_file->exports[i].ordinal == -1) | |
863 | { | |
864 | while (exported_symbols[next_ordinal - min_ordinal] != -1) | |
775cabad NC |
865 | next_ordinal ++; |
866 | ||
252b5132 RH |
867 | exported_symbols[next_ordinal - min_ordinal] = i; |
868 | pe_def_file->exports[i].ordinal = next_ordinal; | |
869 | } | |
870 | ||
86b1cc60 | 871 | /* OK, now we can allocate some memory. */ |
775cabad NC |
872 | edata_sz = (40 /* directory */ |
873 | + 4 * export_table_size /* addresses */ | |
252b5132 RH |
874 | + 4 * count_exported_byname /* name ptrs */ |
875 | + 2 * count_exported_byname /* ordinals */ | |
876 | + name_table_size + strlen (dll_name) + 1); | |
877 | } | |
878 | ||
8a5b676c DD |
879 | /* Fill the exported symbol offsets. The preliminary work has already |
880 | been done in process_def_file(). */ | |
881 | ||
882 | static void | |
883 | fill_exported_offsets (abfd, info) | |
f0c87f88 | 884 | bfd *abfd ATTRIBUTE_UNUSED; |
8a5b676c DD |
885 | struct bfd_link_info *info; |
886 | { | |
f0c87f88 | 887 | int i; |
8a5b676c | 888 | struct bfd_link_hash_entry *blhe; |
5cc18311 | 889 | |
8a5b676c DD |
890 | for (i = 0; i < pe_def_file->num_exports; i++) |
891 | { | |
892 | char *name = (char *) xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2); | |
775cabad | 893 | |
8a5b676c DD |
894 | if (pe_details->underscored) |
895 | { | |
896 | *name = '_'; | |
897 | strcpy (name + 1, pe_def_file->exports[i].internal_name); | |
898 | } | |
899 | else | |
900 | strcpy (name, pe_def_file->exports[i].internal_name); | |
901 | ||
902 | blhe = bfd_link_hash_lookup (info->hash, | |
903 | name, | |
904 | false, false, true); | |
905 | ||
906 | if (blhe && (blhe->type == bfd_link_hash_defined)) | |
775cabad NC |
907 | exported_symbol_offsets[i] = blhe->u.def.value; |
908 | ||
8a5b676c DD |
909 | free (name); |
910 | } | |
911 | } | |
912 | ||
252b5132 RH |
913 | static void |
914 | fill_edata (abfd, info) | |
915 | bfd *abfd; | |
1069dd8d | 916 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
917 | { |
918 | int i, hint; | |
919 | unsigned char *edirectory; | |
920 | unsigned long *eaddresses; | |
921 | unsigned long *enameptrs; | |
922 | unsigned short *eordinals; | |
923 | unsigned char *enamestr; | |
924 | time_t now; | |
925 | ||
926 | time (&now); | |
927 | ||
928 | edata_d = (unsigned char *) xmalloc (edata_sz); | |
929 | ||
86b1cc60 | 930 | /* Note use of array pointer math here. */ |
252b5132 RH |
931 | edirectory = edata_d; |
932 | eaddresses = (unsigned long *) (edata_d + 40); | |
933 | enameptrs = eaddresses + export_table_size; | |
934 | eordinals = (unsigned short *) (enameptrs + count_exported_byname); | |
935 | enamestr = (char *) (eordinals + count_exported_byname); | |
936 | ||
937 | #define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) + edata_s->output_section->vma - image_base) | |
938 | ||
c2a94a7a | 939 | memset (edata_d, 0, edata_sz); |
252b5132 RH |
940 | bfd_put_32 (abfd, now, edata_d + 4); |
941 | if (pe_def_file->version_major != -1) | |
942 | { | |
943 | bfd_put_16 (abfd, pe_def_file->version_major, edata_d + 8); | |
944 | bfd_put_16 (abfd, pe_def_file->version_minor, edata_d + 10); | |
945 | } | |
775cabad | 946 | |
252b5132 RH |
947 | bfd_put_32 (abfd, ERVA (enamestr), edata_d + 12); |
948 | strcpy (enamestr, dll_name); | |
949 | enamestr += strlen (enamestr) + 1; | |
950 | bfd_put_32 (abfd, min_ordinal, edata_d + 16); | |
951 | bfd_put_32 (abfd, export_table_size, edata_d + 20); | |
952 | bfd_put_32 (abfd, count_exported_byname, edata_d + 24); | |
953 | bfd_put_32 (abfd, ERVA (eaddresses), edata_d + 28); | |
954 | bfd_put_32 (abfd, ERVA (enameptrs), edata_d + 32); | |
955 | bfd_put_32 (abfd, ERVA (eordinals), edata_d + 36); | |
956 | ||
8a5b676c DD |
957 | fill_exported_offsets (abfd, info); |
958 | ||
86b1cc60 | 959 | /* Ok, now for the filling in part. */ |
252b5132 RH |
960 | hint = 0; |
961 | for (i = 0; i < export_table_size; i++) | |
962 | { | |
963 | int s = exported_symbols[i]; | |
775cabad | 964 | |
252b5132 RH |
965 | if (s != -1) |
966 | { | |
967 | struct sec *ssec = exported_symbol_sections[s]; | |
968 | unsigned long srva = (exported_symbol_offsets[s] | |
969 | + ssec->output_section->vma | |
970 | + ssec->output_offset); | |
45b1f63c | 971 | int ord = pe_def_file->exports[s].ordinal; |
252b5132 | 972 | |
45b1f63c DD |
973 | bfd_put_32 (abfd, srva - image_base, |
974 | (void *) (eaddresses + ord - min_ordinal)); | |
775cabad | 975 | |
252b5132 RH |
976 | if (!pe_def_file->exports[s].flag_noname) |
977 | { | |
978 | char *ename = pe_def_file->exports[s].name; | |
979 | bfd_put_32 (abfd, ERVA (enamestr), (void *) enameptrs); | |
45b1f63c | 980 | enameptrs++; |
252b5132 RH |
981 | strcpy (enamestr, ename); |
982 | enamestr += strlen (enamestr) + 1; | |
45b1f63c DD |
983 | bfd_put_16 (abfd, ord - min_ordinal, (void *) eordinals); |
984 | eordinals++; | |
252b5132 RH |
985 | pe_def_file->exports[s].hint = hint++; |
986 | } | |
252b5132 RH |
987 | } |
988 | } | |
989 | } | |
990 | ||
b044cda1 CW |
991 | |
992 | static struct sec *current_sec; | |
993 | ||
994 | void | |
995 | pe_walk_relocs_of_symbol (info, name, cb) | |
996 | struct bfd_link_info *info; | |
db09f25b | 997 | const char *name; |
0d888aac | 998 | int (*cb) (arelent *, asection *); |
b044cda1 CW |
999 | { |
1000 | bfd *b; | |
0d888aac | 1001 | asection *s; |
b044cda1 CW |
1002 | |
1003 | for (b = info->input_bfds; b; b = b->link_next) | |
1004 | { | |
775cabad NC |
1005 | asymbol **symbols; |
1006 | int nsyms, symsize; | |
1007 | ||
1008 | symsize = bfd_get_symtab_upper_bound (b); | |
1009 | symbols = (asymbol **) xmalloc (symsize); | |
1010 | nsyms = bfd_canonicalize_symtab (b, symbols); | |
b044cda1 CW |
1011 | |
1012 | for (s = b->sections; s; s = s->next) | |
1013 | { | |
775cabad NC |
1014 | arelent **relocs; |
1015 | int relsize, nrelocs, i; | |
b044cda1 CW |
1016 | int flags = bfd_get_section_flags (b, s); |
1017 | ||
775cabad | 1018 | /* Skip discarded linkonce sections. */ |
b044cda1 CW |
1019 | if (flags & SEC_LINK_ONCE |
1020 | && s->output_section == bfd_abs_section_ptr) | |
1021 | continue; | |
1022 | ||
0d888aac | 1023 | current_sec = s; |
b044cda1 | 1024 | |
b044cda1 CW |
1025 | relsize = bfd_get_reloc_upper_bound (b, s); |
1026 | relocs = (arelent **) xmalloc ((size_t) relsize); | |
1027 | nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols); | |
1028 | ||
1029 | for (i = 0; i < nrelocs; i++) | |
1030 | { | |
1031 | struct symbol_cache_entry *sym = *relocs[i]->sym_ptr_ptr; | |
775cabad NC |
1032 | |
1033 | if (!strcmp (name, sym->name)) | |
1034 | cb (relocs[i], s); | |
b044cda1 | 1035 | } |
775cabad | 1036 | |
b044cda1 | 1037 | free (relocs); |
775cabad | 1038 | |
b044cda1 CW |
1039 | /* Warning: the allocated symbols are remembered in BFD and reused |
1040 | later, so don't free them! */ | |
1041 | /* free (symbols); */ | |
1042 | } | |
1043 | } | |
1044 | } | |
1045 | ||
775cabad | 1046 | /* Gather all the relocations and build the .reloc section. */ |
252b5132 RH |
1047 | |
1048 | static void | |
1049 | generate_reloc (abfd, info) | |
1050 | bfd *abfd; | |
1051 | struct bfd_link_info *info; | |
1052 | { | |
1053 | ||
86b1cc60 | 1054 | /* For .reloc stuff. */ |
c6c37250 | 1055 | reloc_data_type *reloc_data; |
252b5132 RH |
1056 | int total_relocs = 0; |
1057 | int i; | |
1058 | unsigned long sec_page = (unsigned long) (-1); | |
1059 | unsigned long page_ptr, page_count; | |
1060 | int bi; | |
1061 | bfd *b; | |
1062 | struct sec *s; | |
1063 | ||
1064 | total_relocs = 0; | |
1065 | for (b = info->input_bfds; b; b = b->link_next) | |
1066 | for (s = b->sections; s; s = s->next) | |
1067 | total_relocs += s->reloc_count; | |
1068 | ||
b044cda1 CW |
1069 | reloc_data = |
1070 | (reloc_data_type *) xmalloc (total_relocs * sizeof (reloc_data_type)); | |
252b5132 RH |
1071 | |
1072 | total_relocs = 0; | |
1073 | bi = 0; | |
1074 | for (bi = 0, b = info->input_bfds; b; bi++, b = b->link_next) | |
1075 | { | |
1076 | arelent **relocs; | |
1077 | int relsize, nrelocs, i; | |
1078 | ||
1079 | for (s = b->sections; s; s = s->next) | |
1080 | { | |
1081 | unsigned long sec_vma = s->output_section->vma + s->output_offset; | |
1082 | asymbol **symbols; | |
1083 | int nsyms, symsize; | |
1084 | ||
86b1cc60 | 1085 | /* If it's not loaded, we don't need to relocate it this way. */ |
252b5132 RH |
1086 | if (!(s->output_section->flags & SEC_LOAD)) |
1087 | continue; | |
1088 | ||
1089 | /* I don't know why there would be a reloc for these, but I've | |
86b1cc60 | 1090 | seen it happen - DJ */ |
252b5132 RH |
1091 | if (s->output_section == &bfd_abs_section) |
1092 | continue; | |
1093 | ||
1094 | if (s->output_section->vma == 0) | |
1095 | { | |
86b1cc60 | 1096 | /* Huh? Shouldn't happen, but punt if it does. */ |
252b5132 RH |
1097 | einfo ("DJ: zero vma section reloc detected: `%s' #%d f=%d\n", |
1098 | s->output_section->name, s->output_section->index, | |
1099 | s->output_section->flags); | |
1100 | continue; | |
1101 | } | |
1102 | ||
1103 | symsize = bfd_get_symtab_upper_bound (b); | |
1104 | symbols = (asymbol **) xmalloc (symsize); | |
1105 | nsyms = bfd_canonicalize_symtab (b, symbols); | |
1106 | ||
1107 | relsize = bfd_get_reloc_upper_bound (b, s); | |
1108 | relocs = (arelent **) xmalloc ((size_t) relsize); | |
1109 | nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols); | |
1110 | ||
1111 | for (i = 0; i < nrelocs; i++) | |
1112 | { | |
b044cda1 CW |
1113 | if (pe_dll_extra_pe_debug) |
1114 | { | |
1115 | struct symbol_cache_entry *sym = *relocs[i]->sym_ptr_ptr; | |
1116 | printf("rel: %s\n",sym->name); | |
1117 | } | |
252b5132 | 1118 | if (!relocs[i]->howto->pc_relative |
c6c37250 | 1119 | && relocs[i]->howto->type != pe_details->imagebase_reloc) |
252b5132 | 1120 | { |
c6c37250 DD |
1121 | bfd_vma sym_vma; |
1122 | struct symbol_cache_entry *sym = *relocs[i]->sym_ptr_ptr; | |
775cabad | 1123 | |
c6c37250 DD |
1124 | sym_vma = (relocs[i]->addend |
1125 | + sym->value | |
1126 | + sym->section->vma | |
1127 | + sym->section->output_offset | |
1128 | + sym->section->output_section->vma); | |
1129 | reloc_data[total_relocs].vma = sec_vma + relocs[i]->address; | |
5cc18311 | 1130 | |
344a211f | 1131 | #define BITS_AND_SHIFT(bits, shift) (bits * 1000 | shift) |
5cc18311 | 1132 | |
344a211f NC |
1133 | switch BITS_AND_SHIFT (relocs[i]->howto->bitsize, |
1134 | relocs[i]->howto->rightshift) | |
252b5132 | 1135 | { |
344a211f | 1136 | case BITS_AND_SHIFT (32, 0): |
c6c37250 DD |
1137 | reloc_data[total_relocs].type = 3; |
1138 | total_relocs++; | |
252b5132 | 1139 | break; |
344a211f NC |
1140 | case BITS_AND_SHIFT (16, 0): |
1141 | reloc_data[total_relocs].type = 2; | |
1142 | total_relocs++; | |
1143 | break; | |
1144 | case BITS_AND_SHIFT (16, 16): | |
1145 | reloc_data[total_relocs].type = 4; | |
86b1cc60 KH |
1146 | /* FIXME: we can't know the symbol's right value |
1147 | yet, but we probably can safely assume that | |
1148 | CE will relocate us in 64k blocks, so leaving | |
1149 | it zero is safe. */ | |
344a211f NC |
1150 | reloc_data[total_relocs].extra = 0; |
1151 | total_relocs++; | |
1152 | break; | |
1153 | case BITS_AND_SHIFT (26, 2): | |
1154 | reloc_data[total_relocs].type = 5; | |
1155 | total_relocs++; | |
1156 | break; | |
252b5132 RH |
1157 | default: |
1158 | /* xgettext:c-format */ | |
1159 | einfo (_("%XError: %d-bit reloc in dll\n"), | |
1160 | relocs[i]->howto->bitsize); | |
1161 | break; | |
1162 | } | |
1163 | } | |
1164 | } | |
1165 | free (relocs); | |
86b1cc60 KH |
1166 | /* Warning: the allocated symbols are remembered in BFD and |
1167 | reused later, so don't free them! */ | |
7bfd51a3 KH |
1168 | #if 0 |
1169 | free (symbol); | |
1170 | #endif | |
252b5132 RH |
1171 | } |
1172 | } | |
1173 | ||
1174 | /* At this point, we have total_relocs relocation addresses in | |
1175 | reloc_addresses, which are all suitable for the .reloc section. | |
5cc18311 | 1176 | We must now create the new sections. */ |
c6c37250 | 1177 | qsort (reloc_data, total_relocs, sizeof (*reloc_data), reloc_sort); |
252b5132 RH |
1178 | |
1179 | for (i = 0; i < total_relocs; i++) | |
1180 | { | |
c6c37250 | 1181 | unsigned long this_page = (reloc_data[i].vma >> 12); |
5cc18311 | 1182 | |
252b5132 RH |
1183 | if (this_page != sec_page) |
1184 | { | |
775cabad | 1185 | reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align. */ |
252b5132 RH |
1186 | reloc_sz += 8; |
1187 | sec_page = this_page; | |
1188 | } | |
5cc18311 | 1189 | |
252b5132 | 1190 | reloc_sz += 2; |
5cc18311 | 1191 | |
344a211f NC |
1192 | if (reloc_data[i].type == 4) |
1193 | reloc_sz += 2; | |
252b5132 | 1194 | } |
775cabad NC |
1195 | |
1196 | reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align. */ | |
252b5132 | 1197 | reloc_d = (unsigned char *) xmalloc (reloc_sz); |
252b5132 RH |
1198 | sec_page = (unsigned long) (-1); |
1199 | reloc_sz = 0; | |
1200 | page_ptr = (unsigned long) (-1); | |
1201 | page_count = 0; | |
775cabad | 1202 | |
252b5132 RH |
1203 | for (i = 0; i < total_relocs; i++) |
1204 | { | |
c6c37250 | 1205 | unsigned long rva = reloc_data[i].vma - image_base; |
252b5132 | 1206 | unsigned long this_page = (rva & ~0xfff); |
775cabad | 1207 | |
252b5132 RH |
1208 | if (this_page != sec_page) |
1209 | { | |
1210 | while (reloc_sz & 3) | |
1211 | reloc_d[reloc_sz++] = 0; | |
775cabad | 1212 | |
252b5132 RH |
1213 | if (page_ptr != (unsigned long) (-1)) |
1214 | bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4); | |
775cabad | 1215 | |
252b5132 RH |
1216 | bfd_put_32 (abfd, this_page, reloc_d + reloc_sz); |
1217 | page_ptr = reloc_sz; | |
1218 | reloc_sz += 8; | |
1219 | sec_page = this_page; | |
1220 | page_count = 0; | |
1221 | } | |
775cabad | 1222 | |
d643799d | 1223 | bfd_put_16 (abfd, (rva & 0xfff) + (reloc_data[i].type << 12), |
c6c37250 | 1224 | reloc_d + reloc_sz); |
252b5132 | 1225 | reloc_sz += 2; |
775cabad | 1226 | |
c6c37250 DD |
1227 | if (reloc_data[i].type == 4) |
1228 | { | |
1229 | bfd_put_16 (abfd, reloc_data[i].extra, reloc_d + reloc_sz); | |
1230 | reloc_sz += 2; | |
1231 | } | |
775cabad | 1232 | |
252b5132 RH |
1233 | page_count++; |
1234 | } | |
775cabad | 1235 | |
252b5132 RH |
1236 | while (reloc_sz & 3) |
1237 | reloc_d[reloc_sz++] = 0; | |
775cabad | 1238 | |
252b5132 RH |
1239 | if (page_ptr != (unsigned long) (-1)) |
1240 | bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4); | |
775cabad | 1241 | |
252b5132 RH |
1242 | while (reloc_sz < reloc_s->_raw_size) |
1243 | reloc_d[reloc_sz++] = 0; | |
1244 | } | |
1245 | ||
775cabad NC |
1246 | /* Given the exiting def_file structure, print out a .DEF file that |
1247 | corresponds to it. */ | |
252b5132 RH |
1248 | |
1249 | static void | |
1250 | quoteput (s, f, needs_quotes) | |
1251 | char *s; | |
d643799d | 1252 | FILE *f; |
252b5132 RH |
1253 | int needs_quotes; |
1254 | { | |
1255 | char *cp; | |
775cabad | 1256 | |
252b5132 RH |
1257 | for (cp = s; *cp; cp++) |
1258 | if (*cp == '\'' | |
1259 | || *cp == '"' | |
1260 | || *cp == '\\' | |
3882b010 | 1261 | || ISSPACE (*cp) |
252b5132 RH |
1262 | || *cp == ',' |
1263 | || *cp == ';') | |
1264 | needs_quotes = 1; | |
775cabad | 1265 | |
252b5132 RH |
1266 | if (needs_quotes) |
1267 | { | |
1268 | putc ('"', f); | |
775cabad | 1269 | |
252b5132 RH |
1270 | while (*s) |
1271 | { | |
1272 | if (*s == '"' || *s == '\\') | |
1273 | putc ('\\', f); | |
775cabad | 1274 | |
252b5132 RH |
1275 | putc (*s, f); |
1276 | s++; | |
1277 | } | |
775cabad | 1278 | |
252b5132 RH |
1279 | putc ('"', f); |
1280 | } | |
1281 | else | |
1282 | fputs (s, f); | |
1283 | } | |
1284 | ||
1285 | void | |
1286 | pe_dll_generate_def_file (pe_out_def_filename) | |
1069dd8d | 1287 | const char *pe_out_def_filename; |
252b5132 RH |
1288 | { |
1289 | int i; | |
1290 | FILE *out = fopen (pe_out_def_filename, "w"); | |
775cabad | 1291 | |
252b5132 | 1292 | if (out == NULL) |
775cabad NC |
1293 | /* xgettext:c-format */ |
1294 | einfo (_("%s: Can't open output def file %s\n"), | |
1295 | program_name, pe_out_def_filename); | |
252b5132 RH |
1296 | |
1297 | if (pe_def_file) | |
1298 | { | |
1299 | if (pe_def_file->name) | |
1300 | { | |
1301 | if (pe_def_file->is_dll) | |
1302 | fprintf (out, "LIBRARY "); | |
1303 | else | |
1304 | fprintf (out, "NAME "); | |
775cabad | 1305 | |
252b5132 | 1306 | quoteput (pe_def_file->name, out, 1); |
775cabad | 1307 | |
252b5132 RH |
1308 | if (pe_data (output_bfd)->pe_opthdr.ImageBase) |
1309 | fprintf (out, " BASE=0x%lx", | |
1310 | (unsigned long) pe_data (output_bfd)->pe_opthdr.ImageBase); | |
1311 | fprintf (out, "\n"); | |
1312 | } | |
1313 | ||
1314 | if (pe_def_file->description) | |
1315 | { | |
1316 | fprintf (out, "DESCRIPTION "); | |
1317 | quoteput (pe_def_file->description, out, 1); | |
1318 | fprintf (out, "\n"); | |
1319 | } | |
1320 | ||
1321 | if (pe_def_file->version_minor != -1) | |
1322 | fprintf (out, "VERSION %d.%d\n", pe_def_file->version_major, | |
1323 | pe_def_file->version_minor); | |
1324 | else if (pe_def_file->version_major != -1) | |
1325 | fprintf (out, "VERSION %d\n", pe_def_file->version_major); | |
1326 | ||
1327 | if (pe_def_file->stack_reserve != -1 || pe_def_file->heap_reserve != -1) | |
1328 | fprintf (out, "\n"); | |
1329 | ||
1330 | if (pe_def_file->stack_commit != -1) | |
1331 | fprintf (out, "STACKSIZE 0x%x,0x%x\n", | |
1332 | pe_def_file->stack_reserve, pe_def_file->stack_commit); | |
1333 | else if (pe_def_file->stack_reserve != -1) | |
1334 | fprintf (out, "STACKSIZE 0x%x\n", pe_def_file->stack_reserve); | |
775cabad | 1335 | |
252b5132 RH |
1336 | if (pe_def_file->heap_commit != -1) |
1337 | fprintf (out, "HEAPSIZE 0x%x,0x%x\n", | |
1338 | pe_def_file->heap_reserve, pe_def_file->heap_commit); | |
1339 | else if (pe_def_file->heap_reserve != -1) | |
1340 | fprintf (out, "HEAPSIZE 0x%x\n", pe_def_file->heap_reserve); | |
1341 | ||
1342 | if (pe_def_file->num_section_defs > 0) | |
1343 | { | |
1344 | fprintf (out, "\nSECTIONS\n\n"); | |
775cabad | 1345 | |
252b5132 RH |
1346 | for (i = 0; i < pe_def_file->num_section_defs; i++) |
1347 | { | |
1348 | fprintf (out, " "); | |
1349 | quoteput (pe_def_file->section_defs[i].name, out, 0); | |
775cabad | 1350 | |
252b5132 RH |
1351 | if (pe_def_file->section_defs[i].class) |
1352 | { | |
1353 | fprintf (out, " CLASS "); | |
1354 | quoteput (pe_def_file->section_defs[i].class, out, 0); | |
1355 | } | |
775cabad | 1356 | |
252b5132 RH |
1357 | if (pe_def_file->section_defs[i].flag_read) |
1358 | fprintf (out, " READ"); | |
775cabad | 1359 | |
252b5132 RH |
1360 | if (pe_def_file->section_defs[i].flag_write) |
1361 | fprintf (out, " WRITE"); | |
775cabad | 1362 | |
252b5132 RH |
1363 | if (pe_def_file->section_defs[i].flag_execute) |
1364 | fprintf (out, " EXECUTE"); | |
775cabad | 1365 | |
252b5132 RH |
1366 | if (pe_def_file->section_defs[i].flag_shared) |
1367 | fprintf (out, " SHARED"); | |
775cabad | 1368 | |
252b5132 RH |
1369 | fprintf (out, "\n"); |
1370 | } | |
1371 | } | |
1372 | ||
1373 | if (pe_def_file->num_exports > 0) | |
1374 | { | |
b044cda1 | 1375 | fprintf (out, "EXPORTS\n"); |
775cabad | 1376 | |
252b5132 RH |
1377 | for (i = 0; i < pe_def_file->num_exports; i++) |
1378 | { | |
1379 | def_file_export *e = pe_def_file->exports + i; | |
1380 | fprintf (out, " "); | |
1381 | quoteput (e->name, out, 0); | |
775cabad | 1382 | |
252b5132 RH |
1383 | if (e->internal_name && strcmp (e->internal_name, e->name)) |
1384 | { | |
1385 | fprintf (out, " = "); | |
1386 | quoteput (e->internal_name, out, 0); | |
1387 | } | |
775cabad | 1388 | |
252b5132 RH |
1389 | if (e->ordinal != -1) |
1390 | fprintf (out, " @%d", e->ordinal); | |
775cabad | 1391 | |
252b5132 RH |
1392 | if (e->flag_private) |
1393 | fprintf (out, " PRIVATE"); | |
775cabad | 1394 | |
252b5132 RH |
1395 | if (e->flag_constant) |
1396 | fprintf (out, " CONSTANT"); | |
775cabad | 1397 | |
252b5132 RH |
1398 | if (e->flag_noname) |
1399 | fprintf (out, " NONAME"); | |
775cabad | 1400 | |
252b5132 RH |
1401 | if (e->flag_data) |
1402 | fprintf (out, " DATA"); | |
1403 | ||
1404 | fprintf (out, "\n"); | |
1405 | } | |
1406 | } | |
1407 | ||
1408 | if (pe_def_file->num_imports > 0) | |
1409 | { | |
1410 | fprintf (out, "\nIMPORTS\n\n"); | |
775cabad | 1411 | |
252b5132 RH |
1412 | for (i = 0; i < pe_def_file->num_imports; i++) |
1413 | { | |
1414 | def_file_import *im = pe_def_file->imports + i; | |
1415 | fprintf (out, " "); | |
775cabad | 1416 | |
252b5132 RH |
1417 | if (im->internal_name |
1418 | && (!im->name || strcmp (im->internal_name, im->name))) | |
1419 | { | |
1420 | quoteput (im->internal_name, out, 0); | |
1421 | fprintf (out, " = "); | |
1422 | } | |
775cabad | 1423 | |
252b5132 RH |
1424 | quoteput (im->module->name, out, 0); |
1425 | fprintf (out, "."); | |
775cabad | 1426 | |
252b5132 RH |
1427 | if (im->name) |
1428 | quoteput (im->name, out, 0); | |
1429 | else | |
1430 | fprintf (out, "%d", im->ordinal); | |
775cabad | 1431 | |
252b5132 RH |
1432 | fprintf (out, "\n"); |
1433 | } | |
1434 | } | |
1435 | } | |
1436 | else | |
1437 | fprintf (out, _("; no contents available\n")); | |
1438 | ||
1439 | if (fclose (out) == EOF) | |
775cabad NC |
1440 | /* xgettext:c-format */ |
1441 | einfo (_("%P: Error closing file `%s'\n"), pe_out_def_filename); | |
252b5132 RH |
1442 | } |
1443 | ||
775cabad | 1444 | /* Generate the import library. */ |
252b5132 RH |
1445 | |
1446 | static asymbol **symtab; | |
1447 | static int symptr; | |
1448 | static int tmp_seq; | |
1449 | static const char *dll_filename; | |
1450 | static char *dll_symname; | |
1451 | ||
1452 | #define UNDSEC (asection *) &bfd_und_section | |
1453 | ||
1454 | static asection * | |
d643799d | 1455 | quick_section (abfd, name, flags, align) |
252b5132 RH |
1456 | bfd *abfd; |
1457 | const char *name; | |
1458 | int flags; | |
1459 | int align; | |
1460 | { | |
1461 | asection *sec; | |
1462 | asymbol *sym; | |
1463 | ||
1464 | sec = bfd_make_section_old_way (abfd, name); | |
86b1cc60 | 1465 | bfd_set_section_flags (abfd, sec, flags | SEC_ALLOC | SEC_LOAD | SEC_KEEP); |
252b5132 | 1466 | bfd_set_section_alignment (abfd, sec, align); |
86b1cc60 | 1467 | /* Remember to undo this before trying to link internally! */ |
252b5132 RH |
1468 | sec->output_section = sec; |
1469 | ||
1470 | sym = bfd_make_empty_symbol (abfd); | |
1471 | symtab[symptr++] = sym; | |
1472 | sym->name = sec->name; | |
1473 | sym->section = sec; | |
1474 | sym->flags = BSF_LOCAL; | |
1475 | sym->value = 0; | |
1476 | ||
1477 | return sec; | |
1478 | } | |
1479 | ||
1480 | static void | |
1481 | quick_symbol (abfd, n1, n2, n3, sec, flags, addr) | |
1482 | bfd *abfd; | |
db09f25b AM |
1483 | const char *n1; |
1484 | const char *n2; | |
1485 | const char *n3; | |
252b5132 RH |
1486 | asection *sec; |
1487 | int flags; | |
1488 | int addr; | |
1489 | { | |
1490 | asymbol *sym; | |
1491 | char *name = (char *) xmalloc (strlen (n1) + strlen (n2) + strlen (n3) + 1); | |
775cabad | 1492 | |
252b5132 RH |
1493 | strcpy (name, n1); |
1494 | strcat (name, n2); | |
1495 | strcat (name, n3); | |
1496 | sym = bfd_make_empty_symbol (abfd); | |
1497 | sym->name = name; | |
1498 | sym->section = sec; | |
1499 | sym->flags = flags; | |
1500 | sym->value = addr; | |
1501 | symtab[symptr++] = sym; | |
1502 | } | |
1503 | ||
1504 | static arelent *reltab = 0; | |
1505 | static int relcount = 0, relsize = 0; | |
1506 | ||
1507 | static void | |
1508 | quick_reloc (abfd, address, which_howto, symidx) | |
1509 | bfd *abfd; | |
1510 | int address; | |
1511 | int which_howto; | |
1512 | int symidx; | |
1513 | { | |
d643799d | 1514 | if (relcount >= (relsize - 1)) |
252b5132 RH |
1515 | { |
1516 | relsize += 10; | |
1517 | if (reltab) | |
1518 | reltab = (arelent *) xrealloc (reltab, relsize * sizeof (arelent)); | |
1519 | else | |
1520 | reltab = (arelent *) xmalloc (relsize * sizeof (arelent)); | |
1521 | } | |
1522 | reltab[relcount].address = address; | |
1523 | reltab[relcount].addend = 0; | |
1524 | reltab[relcount].howto = bfd_reloc_type_lookup (abfd, which_howto); | |
1525 | reltab[relcount].sym_ptr_ptr = symtab + symidx; | |
1526 | relcount++; | |
1527 | } | |
1528 | ||
1529 | static void | |
1530 | save_relocs (asection *sec) | |
1531 | { | |
1532 | int i; | |
775cabad | 1533 | |
252b5132 RH |
1534 | sec->relocation = reltab; |
1535 | sec->reloc_count = relcount; | |
d643799d KH |
1536 | sec->orelocation = (arelent **) xmalloc ((relcount + 1) * sizeof (arelent *)); |
1537 | for (i = 0; i < relcount; i++) | |
252b5132 RH |
1538 | sec->orelocation[i] = sec->relocation + i; |
1539 | sec->orelocation[relcount] = 0; | |
1540 | sec->flags |= SEC_RELOC; | |
1541 | reltab = 0; | |
1542 | relcount = relsize = 0; | |
1543 | } | |
1544 | ||
775cabad NC |
1545 | /* .section .idata$2 |
1546 | .global __head_my_dll | |
1547 | __head_my_dll: | |
1548 | .rva hname | |
1549 | .long 0 | |
1550 | .long 0 | |
1551 | .rva __my_dll_iname | |
1552 | .rva fthunk | |
1553 | ||
1554 | .section .idata$5 | |
1555 | .long 0 | |
1556 | fthunk: | |
1557 | ||
1558 | .section .idata$4 | |
1559 | .long 0 | |
1560 | hname: */ | |
252b5132 RH |
1561 | |
1562 | static bfd * | |
1563 | make_head (parent) | |
1564 | bfd *parent; | |
1565 | { | |
1566 | asection *id2, *id5, *id4; | |
1567 | unsigned char *d2, *d5, *d4; | |
1568 | char *oname; | |
1569 | bfd *abfd; | |
1570 | ||
1571 | oname = (char *) xmalloc (20); | |
1572 | sprintf (oname, "d%06d.o", tmp_seq); | |
1573 | tmp_seq++; | |
1574 | ||
1575 | abfd = bfd_create (oname, parent); | |
c6c37250 | 1576 | bfd_find_target (pe_details->object_target, abfd); |
252b5132 RH |
1577 | bfd_make_writable (abfd); |
1578 | ||
1579 | bfd_set_format (abfd, bfd_object); | |
c6c37250 | 1580 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); |
252b5132 RH |
1581 | |
1582 | symptr = 0; | |
1583 | symtab = (asymbol **) xmalloc (6 * sizeof (asymbol *)); | |
1584 | id2 = quick_section (abfd, ".idata$2", SEC_HAS_CONTENTS, 2); | |
1585 | id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2); | |
1586 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); | |
d643799d KH |
1587 | quick_symbol (abfd, U ("_head_"), dll_symname, "", id2, BSF_GLOBAL, 0); |
1588 | quick_symbol (abfd, U (""), dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0); | |
c6c37250 DD |
1589 | |
1590 | /* OK, pay attention here. I got confused myself looking back at | |
1591 | it. We create a four-byte section to mark the beginning of the | |
1592 | list, and we include an offset of 4 in the section, so that the | |
1593 | pointer to the list points to the *end* of this section, which is | |
5cc18311 | 1594 | the start of the list of sections from other objects. */ |
252b5132 RH |
1595 | |
1596 | bfd_set_section_size (abfd, id2, 20); | |
1597 | d2 = (unsigned char *) xmalloc (20); | |
1598 | id2->contents = d2; | |
1599 | memset (d2, 0, 20); | |
775cabad | 1600 | d2[0] = d2[16] = 4; /* Reloc addend. */ |
252b5132 RH |
1601 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 2); |
1602 | quick_reloc (abfd, 12, BFD_RELOC_RVA, 4); | |
1603 | quick_reloc (abfd, 16, BFD_RELOC_RVA, 1); | |
1604 | save_relocs (id2); | |
1605 | ||
1606 | bfd_set_section_size (abfd, id5, 4); | |
1607 | d5 = (unsigned char *) xmalloc (4); | |
1608 | id5->contents = d5; | |
1609 | memset (d5, 0, 4); | |
1610 | ||
1611 | bfd_set_section_size (abfd, id4, 4); | |
1612 | d4 = (unsigned char *) xmalloc (4); | |
1613 | id4->contents = d4; | |
1614 | memset (d4, 0, 4); | |
1615 | ||
1616 | bfd_set_symtab (abfd, symtab, symptr); | |
1617 | ||
1618 | bfd_set_section_contents (abfd, id2, d2, 0, 20); | |
1619 | bfd_set_section_contents (abfd, id5, d5, 0, 4); | |
1620 | bfd_set_section_contents (abfd, id4, d4, 0, 4); | |
5cc18311 | 1621 | |
252b5132 RH |
1622 | bfd_make_readable (abfd); |
1623 | return abfd; | |
1624 | } | |
1625 | ||
775cabad NC |
1626 | /* .section .idata$4 |
1627 | .long 0 | |
1628 | .section .idata$5 | |
1629 | .long 0 | |
1630 | .section idata$7 | |
1631 | .global __my_dll_iname | |
1632 | __my_dll_iname: | |
1633 | .asciz "my.dll" */ | |
252b5132 RH |
1634 | |
1635 | static bfd * | |
1636 | make_tail (parent) | |
1637 | bfd *parent; | |
1638 | { | |
1639 | asection *id4, *id5, *id7; | |
1640 | unsigned char *d4, *d5, *d7; | |
1641 | int len; | |
1642 | char *oname; | |
1643 | bfd *abfd; | |
1644 | ||
1645 | oname = (char *) xmalloc (20); | |
1646 | sprintf (oname, "d%06d.o", tmp_seq); | |
1647 | tmp_seq++; | |
1648 | ||
1649 | abfd = bfd_create (oname, parent); | |
c6c37250 | 1650 | bfd_find_target (pe_details->object_target, abfd); |
252b5132 RH |
1651 | bfd_make_writable (abfd); |
1652 | ||
1653 | bfd_set_format (abfd, bfd_object); | |
c6c37250 | 1654 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); |
252b5132 RH |
1655 | |
1656 | symptr = 0; | |
1657 | symtab = (asymbol **) xmalloc (5 * sizeof (asymbol *)); | |
1658 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); | |
1659 | id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2); | |
1660 | id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2); | |
d643799d | 1661 | quick_symbol (abfd, U (""), dll_symname, "_iname", id7, BSF_GLOBAL, 0); |
252b5132 RH |
1662 | |
1663 | bfd_set_section_size (abfd, id4, 4); | |
1664 | d4 = (unsigned char *) xmalloc (4); | |
1665 | id4->contents = d4; | |
1666 | memset (d4, 0, 4); | |
1667 | ||
1668 | bfd_set_section_size (abfd, id5, 4); | |
1669 | d5 = (unsigned char *) xmalloc (4); | |
1670 | id5->contents = d5; | |
1671 | memset (d5, 0, 4); | |
1672 | ||
d643799d | 1673 | len = strlen (dll_filename) + 1; |
252b5132 | 1674 | if (len & 1) |
d643799d | 1675 | len++; |
252b5132 RH |
1676 | bfd_set_section_size (abfd, id7, len); |
1677 | d7 = (unsigned char *) xmalloc (len); | |
1678 | id7->contents = d7; | |
1679 | strcpy (d7, dll_filename); | |
1680 | ||
1681 | bfd_set_symtab (abfd, symtab, symptr); | |
1682 | ||
1683 | bfd_set_section_contents (abfd, id4, d4, 0, 4); | |
1684 | bfd_set_section_contents (abfd, id5, d5, 0, 4); | |
1685 | bfd_set_section_contents (abfd, id7, d7, 0, len); | |
1686 | ||
1687 | bfd_make_readable (abfd); | |
1688 | return abfd; | |
1689 | } | |
1690 | ||
775cabad NC |
1691 | /* .text |
1692 | .global _function | |
1693 | .global ___imp_function | |
1694 | .global __imp__function | |
1695 | _function: | |
1696 | jmp *__imp__function: | |
1697 | ||
1698 | .section idata$7 | |
1699 | .long __head_my_dll | |
1700 | ||
1701 | .section .idata$5 | |
1702 | ___imp_function: | |
1703 | __imp__function: | |
1704 | iat? | |
1705 | .section .idata$4 | |
1706 | iat? | |
1707 | .section .idata$6 | |
1708 | ID<ordinal>: | |
1709 | .short <hint> | |
1710 | .asciz "function" xlate? (add underscore, kill at) */ | |
1711 | ||
1712 | static unsigned char jmp_ix86_bytes[] = | |
1713 | { | |
252b5132 RH |
1714 | 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 |
1715 | }; | |
1716 | ||
775cabad NC |
1717 | /* _function: |
1718 | mov.l ip+8,r0 | |
1719 | mov.l @r0,r0 | |
1720 | jmp @r0 | |
1721 | nop | |
1722 | .dw __imp_function */ | |
344a211f | 1723 | |
775cabad NC |
1724 | static unsigned char jmp_sh_bytes[] = |
1725 | { | |
344a211f NC |
1726 | 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 |
1727 | }; | |
1728 | ||
775cabad NC |
1729 | /* _function: |
1730 | lui $t0,<high:__imp_function> | |
1731 | lw $t0,<low:__imp_function> | |
1732 | jr $t0 | |
1733 | nop */ | |
344a211f | 1734 | |
775cabad NC |
1735 | static unsigned char jmp_mips_bytes[] = |
1736 | { | |
344a211f NC |
1737 | 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d, |
1738 | 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 | |
1739 | }; | |
252b5132 RH |
1740 | |
1741 | static bfd * | |
1742 | make_one (exp, parent) | |
1743 | def_file_export *exp; | |
1744 | bfd *parent; | |
1745 | { | |
1746 | asection *tx, *id7, *id5, *id4, *id6; | |
23a87948 | 1747 | unsigned char *td = NULL, *d7, *d5, *d4, *d6 = NULL; |
252b5132 RH |
1748 | int len; |
1749 | char *oname; | |
1750 | bfd *abfd; | |
f0c87f88 NC |
1751 | unsigned char *jmp_bytes = NULL; |
1752 | int jmp_byte_count = 0; | |
c6c37250 DD |
1753 | |
1754 | switch (pe_details->pe_arch) | |
1755 | { | |
1756 | case PE_ARCH_i386: | |
1757 | jmp_bytes = jmp_ix86_bytes; | |
1758 | jmp_byte_count = sizeof (jmp_ix86_bytes); | |
1759 | break; | |
344a211f NC |
1760 | case PE_ARCH_sh: |
1761 | jmp_bytes = jmp_sh_bytes; | |
1762 | jmp_byte_count = sizeof (jmp_sh_bytes); | |
1763 | break; | |
1764 | case PE_ARCH_mips: | |
1765 | jmp_bytes = jmp_mips_bytes; | |
1766 | jmp_byte_count = sizeof (jmp_mips_bytes); | |
1767 | break; | |
775cabad NC |
1768 | default: |
1769 | abort (); | |
c6c37250 | 1770 | } |
252b5132 RH |
1771 | |
1772 | oname = (char *) xmalloc (20); | |
1773 | sprintf (oname, "d%06d.o", tmp_seq); | |
1774 | tmp_seq++; | |
1775 | ||
1776 | abfd = bfd_create (oname, parent); | |
c6c37250 | 1777 | bfd_find_target (pe_details->object_target, abfd); |
252b5132 RH |
1778 | bfd_make_writable (abfd); |
1779 | ||
1780 | bfd_set_format (abfd, bfd_object); | |
c6c37250 | 1781 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); |
252b5132 RH |
1782 | |
1783 | symptr = 0; | |
b044cda1 | 1784 | symtab = (asymbol **) xmalloc (11 * sizeof (asymbol *)); |
252b5132 RH |
1785 | tx = quick_section (abfd, ".text", SEC_CODE|SEC_HAS_CONTENTS, 2); |
1786 | id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2); | |
1787 | id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2); | |
1788 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); | |
1789 | id6 = quick_section (abfd, ".idata$6", SEC_HAS_CONTENTS, 2); | |
7c9e78f8 | 1790 | if (! exp->flag_data) |
d643799d KH |
1791 | quick_symbol (abfd, U (""), exp->internal_name, "", tx, BSF_GLOBAL, 0); |
1792 | quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC, BSF_GLOBAL, 0); | |
1793 | quick_symbol (abfd, U ("_imp__"), exp->internal_name, "", id5, BSF_GLOBAL, 0); | |
775cabad NC |
1794 | /* Symbol to reference ord/name of imported |
1795 | symbol, used to implement auto-import. */ | |
b044cda1 | 1796 | quick_symbol (abfd, U("_nm__"), exp->internal_name, "", id6, BSF_GLOBAL, 0); |
870df5dc | 1797 | if (pe_dll_compat_implib) |
d643799d KH |
1798 | quick_symbol (abfd, U ("__imp_"), exp->internal_name, "", |
1799 | id5, BSF_GLOBAL, 0); | |
252b5132 | 1800 | |
23a87948 | 1801 | if (! exp->flag_data) |
775cabad NC |
1802 | { |
1803 | bfd_set_section_size (abfd, tx, jmp_byte_count); | |
1804 | td = (unsigned char *) xmalloc (jmp_byte_count); | |
1805 | tx->contents = td; | |
1806 | memcpy (td, jmp_bytes, jmp_byte_count); | |
1807 | ||
1808 | switch (pe_details->pe_arch) | |
1809 | { | |
1810 | case PE_ARCH_i386: | |
1811 | quick_reloc (abfd, 2, BFD_RELOC_32, 2); | |
1812 | break; | |
1813 | case PE_ARCH_sh: | |
1814 | quick_reloc (abfd, 8, BFD_RELOC_32, 2); | |
1815 | break; | |
1816 | case PE_ARCH_mips: | |
1817 | quick_reloc (abfd, 0, BFD_RELOC_HI16_S, 2); | |
1818 | quick_reloc (abfd, 0, BFD_RELOC_LO16, 0); /* MIPS_R_PAIR */ | |
1819 | quick_reloc (abfd, 4, BFD_RELOC_LO16, 2); | |
1820 | break; | |
1821 | default: | |
1822 | abort (); | |
1823 | } | |
1824 | save_relocs (tx); | |
1825 | } | |
252b5132 RH |
1826 | |
1827 | bfd_set_section_size (abfd, id7, 4); | |
1828 | d7 = (unsigned char *) xmalloc (4); | |
1829 | id7->contents = d7; | |
1830 | memset (d7, 0, 4); | |
1831 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 6); | |
1832 | save_relocs (id7); | |
1833 | ||
1834 | bfd_set_section_size (abfd, id5, 4); | |
1835 | d5 = (unsigned char *) xmalloc (4); | |
1836 | id5->contents = d5; | |
1837 | memset (d5, 0, 4); | |
775cabad | 1838 | |
252b5132 RH |
1839 | if (exp->flag_noname) |
1840 | { | |
1841 | d5[0] = exp->ordinal; | |
1842 | d5[1] = exp->ordinal >> 8; | |
1843 | d5[3] = 0x80; | |
1844 | } | |
1845 | else | |
1846 | { | |
1847 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 4); | |
1848 | save_relocs (id5); | |
1849 | } | |
1850 | ||
1851 | bfd_set_section_size (abfd, id4, 4); | |
1852 | d4 = (unsigned char *) xmalloc (4); | |
1853 | id4->contents = d4; | |
1854 | memset (d4, 0, 4); | |
775cabad | 1855 | |
252b5132 RH |
1856 | if (exp->flag_noname) |
1857 | { | |
c2a94a7a DD |
1858 | d4[0] = exp->ordinal; |
1859 | d4[1] = exp->ordinal >> 8; | |
1860 | d4[3] = 0x80; | |
252b5132 RH |
1861 | } |
1862 | else | |
1863 | { | |
1864 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 4); | |
1865 | save_relocs (id4); | |
1866 | } | |
1867 | ||
1868 | if (exp->flag_noname) | |
1869 | { | |
1870 | len = 0; | |
1871 | bfd_set_section_size (abfd, id6, 0); | |
1872 | } | |
1873 | else | |
1874 | { | |
1875 | len = strlen (exp->name) + 3; | |
1876 | if (len & 1) | |
1877 | len++; | |
1878 | bfd_set_section_size (abfd, id6, len); | |
1879 | d6 = (unsigned char *) xmalloc (len); | |
1880 | id6->contents = d6; | |
1881 | memset (d6, 0, len); | |
1882 | d6[0] = exp->hint & 0xff; | |
1883 | d6[1] = exp->hint >> 8; | |
d643799d | 1884 | strcpy (d6 + 2, exp->name); |
252b5132 RH |
1885 | } |
1886 | ||
1887 | bfd_set_symtab (abfd, symtab, symptr); | |
1888 | ||
c6c37250 | 1889 | bfd_set_section_contents (abfd, tx, td, 0, jmp_byte_count); |
252b5132 RH |
1890 | bfd_set_section_contents (abfd, id7, d7, 0, 4); |
1891 | bfd_set_section_contents (abfd, id5, d5, 0, 4); | |
1892 | bfd_set_section_contents (abfd, id4, d4, 0, 4); | |
1893 | if (!exp->flag_noname) | |
1894 | bfd_set_section_contents (abfd, id6, d6, 0, len); | |
1895 | ||
1896 | bfd_make_readable (abfd); | |
1897 | return abfd; | |
1898 | } | |
1899 | ||
b044cda1 CW |
1900 | static bfd * |
1901 | make_singleton_name_thunk (import, parent) | |
db09f25b | 1902 | const char *import; |
b044cda1 CW |
1903 | bfd *parent; |
1904 | { | |
775cabad | 1905 | /* Name thunks go to idata$4. */ |
b044cda1 CW |
1906 | asection *id4; |
1907 | unsigned char *d4; | |
1908 | char *oname; | |
1909 | bfd *abfd; | |
1910 | ||
1911 | oname = (char *) xmalloc (20); | |
1912 | sprintf (oname, "nmth%06d.o", tmp_seq); | |
1913 | tmp_seq++; | |
1914 | ||
1915 | abfd = bfd_create (oname, parent); | |
1916 | bfd_find_target (pe_details->object_target, abfd); | |
1917 | bfd_make_writable (abfd); | |
1918 | ||
1919 | bfd_set_format (abfd, bfd_object); | |
1920 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); | |
1921 | ||
1922 | symptr = 0; | |
1923 | symtab = (asymbol **) xmalloc (3 * sizeof (asymbol *)); | |
1924 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); | |
1925 | quick_symbol (abfd, U ("_nm_thnk_"), import, "", id4, BSF_GLOBAL, 0); | |
1926 | quick_symbol (abfd, U ("_nm_"), import, "", UNDSEC, BSF_GLOBAL, 0); | |
1927 | ||
1928 | bfd_set_section_size (abfd, id4, 8); | |
1929 | d4 = (unsigned char *) xmalloc (4); | |
1930 | id4->contents = d4; | |
1931 | memset (d4, 0, 8); | |
1932 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 2); | |
1933 | save_relocs (id4); | |
1934 | ||
1935 | bfd_set_symtab (abfd, symtab, symptr); | |
1936 | ||
1937 | bfd_set_section_contents (abfd, id4, d4, 0, 8); | |
1938 | ||
1939 | bfd_make_readable (abfd); | |
1940 | return abfd; | |
1941 | } | |
1942 | ||
1943 | static char * | |
1944 | make_import_fixup_mark (rel) | |
1945 | arelent *rel; | |
1946 | { | |
775cabad | 1947 | /* We convert reloc to symbol, for later reference. */ |
b044cda1 CW |
1948 | static int counter; |
1949 | static char *fixup_name = NULL; | |
db09f25b | 1950 | static size_t buffer_len = 0; |
b044cda1 CW |
1951 | |
1952 | struct symbol_cache_entry *sym = *rel->sym_ptr_ptr; | |
1953 | ||
1954 | bfd *abfd = bfd_asymbol_bfd (sym); | |
1955 | struct coff_link_hash_entry *myh = NULL; | |
1956 | ||
1957 | if (!fixup_name) | |
1958 | { | |
1959 | fixup_name = (char *) xmalloc (384); | |
1960 | buffer_len = 384; | |
1961 | } | |
1962 | ||
1963 | if (strlen (sym->name) + 25 > buffer_len) | |
775cabad | 1964 | /* Assume 25 chars for "__fu" + counter + "_". If counter is |
b044cda1 | 1965 | bigger than 20 digits long, we've got worse problems than |
775cabad | 1966 | overflowing this buffer... */ |
b044cda1 CW |
1967 | { |
1968 | free (fixup_name); | |
775cabad NC |
1969 | /* New buffer size is length of symbol, plus 25, but then |
1970 | rounded up to the nearest multiple of 128. */ | |
b044cda1 CW |
1971 | buffer_len = ((strlen (sym->name) + 25) + 127) & ~127; |
1972 | fixup_name = (char *) xmalloc (buffer_len); | |
1973 | } | |
1974 | ||
1975 | sprintf (fixup_name, "__fu%d_%s", counter++, sym->name); | |
1976 | ||
1977 | bfd_coff_link_add_one_symbol (&link_info, abfd, fixup_name, BSF_GLOBAL, | |
1978 | current_sec, /* sym->section, */ | |
1979 | rel->address, NULL, true, false, | |
1980 | (struct bfd_link_hash_entry **) &myh); | |
1981 | ||
775cabad NC |
1982 | #if 0 |
1983 | printf ("type:%d\n", myh->type); | |
1984 | printf ("%s\n", myh->root.u.def.section->name); | |
1985 | #endif | |
b044cda1 CW |
1986 | return fixup_name; |
1987 | } | |
1988 | ||
775cabad NC |
1989 | /* .section .idata$3 |
1990 | .rva __nm_thnk_SYM (singleton thunk with name of func) | |
1991 | .long 0 | |
1992 | .long 0 | |
1993 | .rva __my_dll_iname (name of dll) | |
1994 | .rva __fuNN_SYM (pointer to reference (address) in text) */ | |
b044cda1 CW |
1995 | |
1996 | static bfd * | |
1997 | make_import_fixup_entry (name, fixup_name, dll_symname,parent) | |
db09f25b AM |
1998 | const char *name; |
1999 | const char *fixup_name; | |
2000 | const char *dll_symname; | |
b044cda1 CW |
2001 | bfd *parent; |
2002 | { | |
2003 | asection *id3; | |
2004 | unsigned char *d3; | |
2005 | char *oname; | |
2006 | bfd *abfd; | |
2007 | ||
2008 | oname = (char *) xmalloc (20); | |
2009 | sprintf (oname, "fu%06d.o", tmp_seq); | |
2010 | tmp_seq++; | |
2011 | ||
2012 | abfd = bfd_create (oname, parent); | |
2013 | bfd_find_target (pe_details->object_target, abfd); | |
2014 | bfd_make_writable (abfd); | |
2015 | ||
2016 | bfd_set_format (abfd, bfd_object); | |
2017 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); | |
2018 | ||
2019 | symptr = 0; | |
2020 | symtab = (asymbol **) xmalloc (6 * sizeof (asymbol *)); | |
2021 | id3 = quick_section (abfd, ".idata$3", SEC_HAS_CONTENTS, 2); | |
775cabad NC |
2022 | |
2023 | #if 0 | |
2024 | quick_symbol (abfd, U ("_head_"), dll_symname, "", id2, BSF_GLOBAL, 0); | |
2025 | #endif | |
b044cda1 CW |
2026 | quick_symbol (abfd, U ("_nm_thnk_"), name, "", UNDSEC, BSF_GLOBAL, 0); |
2027 | quick_symbol (abfd, U (""), dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0); | |
2028 | quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0); | |
2029 | ||
2030 | bfd_set_section_size (abfd, id3, 20); | |
2031 | d3 = (unsigned char *) xmalloc (20); | |
2032 | id3->contents = d3; | |
2033 | memset (d3, 0, 20); | |
2034 | ||
2035 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 1); | |
2036 | quick_reloc (abfd, 12, BFD_RELOC_RVA, 2); | |
2037 | quick_reloc (abfd, 16, BFD_RELOC_RVA, 3); | |
2038 | save_relocs (id3); | |
2039 | ||
2040 | bfd_set_symtab (abfd, symtab, symptr); | |
2041 | ||
2042 | bfd_set_section_contents (abfd, id3, d3, 0, 20); | |
2043 | ||
2044 | bfd_make_readable (abfd); | |
2045 | return abfd; | |
2046 | } | |
2047 | ||
2048 | void | |
2049 | pe_create_import_fixup (rel) | |
2050 | arelent *rel; | |
2051 | { | |
2052 | char buf[300]; | |
2053 | struct symbol_cache_entry *sym = *rel->sym_ptr_ptr; | |
2054 | struct bfd_link_hash_entry *name_thunk_sym; | |
db09f25b | 2055 | const char *name = sym->name; |
b044cda1 CW |
2056 | char *fixup_name = make_import_fixup_mark (rel); |
2057 | ||
2058 | sprintf (buf, U ("_nm_thnk_%s"), name); | |
2059 | ||
2060 | name_thunk_sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1); | |
2061 | ||
2062 | if (!name_thunk_sym || name_thunk_sym->type != bfd_link_hash_defined) | |
2063 | { | |
2064 | bfd *b = make_singleton_name_thunk (name, output_bfd); | |
2065 | add_bfd_to_link (b, b->filename, &link_info); | |
2066 | ||
775cabad | 2067 | /* If we ever use autoimport, we have to cast text section writable. */ |
b044cda1 CW |
2068 | config.text_read_only = false; |
2069 | } | |
2070 | ||
2071 | { | |
aa3d9aba | 2072 | extern char * pe_data_import_dll; |
85c77458 | 2073 | char * dll_symname = pe_data_import_dll ? pe_data_import_dll : "unknown"; |
aa3d9aba NC |
2074 | |
2075 | bfd *b = make_import_fixup_entry (name, fixup_name, dll_symname, | |
b044cda1 CW |
2076 | output_bfd); |
2077 | add_bfd_to_link (b, b->filename, &link_info); | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | ||
252b5132 RH |
2082 | void |
2083 | pe_dll_generate_implib (def, impfilename) | |
2084 | def_file *def; | |
1069dd8d | 2085 | const char *impfilename; |
252b5132 RH |
2086 | { |
2087 | int i; | |
2088 | bfd *ar_head; | |
2089 | bfd *ar_tail; | |
2090 | bfd *outarch; | |
2091 | bfd *head = 0; | |
2092 | ||
5aaace27 | 2093 | dll_filename = (def->name) ? def->name : dll_name; |
252b5132 | 2094 | dll_symname = xstrdup (dll_filename); |
d643799d | 2095 | for (i = 0; dll_symname[i]; i++) |
3882b010 | 2096 | if (!ISALNUM (dll_symname[i])) |
252b5132 RH |
2097 | dll_symname[i] = '_'; |
2098 | ||
2099 | unlink (impfilename); | |
2100 | ||
2101 | outarch = bfd_openw (impfilename, 0); | |
2102 | ||
2103 | if (!outarch) | |
2104 | { | |
2105 | /* xgettext:c-format */ | |
2106 | einfo (_("%XCan't open .lib file: %s\n"), impfilename); | |
2107 | return; | |
2108 | } | |
2109 | ||
2110 | /* xgettext:c-format */ | |
2111 | einfo (_("Creating library file: %s\n"), impfilename); | |
5cc18311 | 2112 | |
252b5132 RH |
2113 | bfd_set_format (outarch, bfd_archive); |
2114 | outarch->has_armap = 1; | |
2115 | ||
5cc18311 | 2116 | /* Work out a reasonable size of things to put onto one line. */ |
252b5132 | 2117 | ar_head = make_head (outarch); |
252b5132 | 2118 | |
d643799d | 2119 | for (i = 0; i < def->num_exports; i++) |
252b5132 | 2120 | { |
86b1cc60 | 2121 | /* The import library doesn't know about the internal name. */ |
252b5132 RH |
2122 | char *internal = def->exports[i].internal_name; |
2123 | bfd *n; | |
775cabad | 2124 | |
252b5132 | 2125 | def->exports[i].internal_name = def->exports[i].name; |
d643799d | 2126 | n = make_one (def->exports + i, outarch); |
252b5132 RH |
2127 | n->next = head; |
2128 | head = n; | |
2129 | def->exports[i].internal_name = internal; | |
2130 | } | |
2131 | ||
c6c37250 DD |
2132 | ar_tail = make_tail (outarch); |
2133 | ||
2134 | if (ar_head == NULL || ar_tail == NULL) | |
2135 | return; | |
2136 | ||
86b1cc60 | 2137 | /* Now stick them all into the archive. */ |
252b5132 RH |
2138 | ar_head->next = head; |
2139 | ar_tail->next = ar_head; | |
2140 | head = ar_tail; | |
2141 | ||
2142 | if (! bfd_set_archive_head (outarch, head)) | |
2143 | einfo ("%Xbfd_set_archive_head: %s\n", bfd_errmsg (bfd_get_error ())); | |
5cc18311 | 2144 | |
252b5132 RH |
2145 | if (! bfd_close (outarch)) |
2146 | einfo ("%Xbfd_close %s: %s\n", impfilename, bfd_errmsg (bfd_get_error ())); | |
2147 | ||
2148 | while (head != NULL) | |
2149 | { | |
2150 | bfd *n = head->next; | |
2151 | bfd_close (head); | |
2152 | head = n; | |
2153 | } | |
2154 | } | |
2155 | ||
2156 | static void | |
2157 | add_bfd_to_link (abfd, name, link_info) | |
2158 | bfd *abfd; | |
db09f25b | 2159 | const char *name; |
252b5132 RH |
2160 | struct bfd_link_info *link_info; |
2161 | { | |
2162 | lang_input_statement_type *fake_file; | |
775cabad | 2163 | |
252b5132 RH |
2164 | fake_file = lang_add_input_file (name, |
2165 | lang_input_file_is_fake_enum, | |
2166 | NULL); | |
2167 | fake_file->the_bfd = abfd; | |
2168 | ldlang_add_file (fake_file); | |
775cabad | 2169 | |
252b5132 RH |
2170 | if (!bfd_link_add_symbols (abfd, link_info)) |
2171 | einfo ("%Xaddsym %s: %s\n", name, bfd_errmsg (bfd_get_error ())); | |
2172 | } | |
2173 | ||
2174 | void | |
2175 | pe_process_import_defs (output_bfd, link_info) | |
2176 | bfd *output_bfd; | |
2177 | struct bfd_link_info *link_info; | |
2178 | { | |
2179 | def_file_module *module; | |
775cabad | 2180 | |
d643799d | 2181 | pe_dll_id_target (bfd_get_target (output_bfd)); |
252b5132 RH |
2182 | |
2183 | if (!pe_def_file) | |
2184 | return; | |
2185 | ||
2186 | for (module = pe_def_file->modules; module; module = module->next) | |
2187 | { | |
2188 | int i, do_this_dll; | |
2189 | ||
2190 | dll_filename = module->name; | |
2191 | dll_symname = xstrdup (module->name); | |
d643799d | 2192 | for (i = 0; dll_symname[i]; i++) |
3882b010 | 2193 | if (!ISALNUM (dll_symname[i])) |
252b5132 RH |
2194 | dll_symname[i] = '_'; |
2195 | ||
2196 | do_this_dll = 0; | |
2197 | ||
d643799d | 2198 | for (i = 0; i < pe_def_file->num_imports; i++) |
252b5132 RH |
2199 | if (pe_def_file->imports[i].module == module) |
2200 | { | |
2201 | def_file_export exp; | |
2202 | struct bfd_link_hash_entry *blhe; | |
2203 | ||
86b1cc60 | 2204 | /* See if we need this import. */ |
874c8c99 | 2205 | char *name = (char *) xmalloc (strlen (pe_def_file->imports[i].internal_name) + 2 + 6); |
d643799d | 2206 | sprintf (name, "%s%s", U (""), pe_def_file->imports[i].internal_name); |
252b5132 RH |
2207 | blhe = bfd_link_hash_lookup (link_info->hash, name, |
2208 | false, false, false); | |
874c8c99 DD |
2209 | if (!blhe || (blhe && blhe->type != bfd_link_hash_undefined)) |
2210 | { | |
d643799d | 2211 | sprintf (name, "%s%s", U ("_imp__"), |
874c8c99 DD |
2212 | pe_def_file->imports[i].internal_name); |
2213 | blhe = bfd_link_hash_lookup (link_info->hash, name, | |
2214 | false, false, false); | |
2215 | } | |
252b5132 RH |
2216 | free (name); |
2217 | if (blhe && blhe->type == bfd_link_hash_undefined) | |
2218 | { | |
2219 | bfd *one; | |
86b1cc60 | 2220 | /* We do. */ |
252b5132 RH |
2221 | if (!do_this_dll) |
2222 | { | |
2223 | bfd *ar_head = make_head (output_bfd); | |
2224 | add_bfd_to_link (ar_head, ar_head->filename, link_info); | |
2225 | do_this_dll = 1; | |
2226 | } | |
2227 | exp.internal_name = pe_def_file->imports[i].internal_name; | |
2228 | exp.name = pe_def_file->imports[i].name; | |
2229 | exp.ordinal = pe_def_file->imports[i].ordinal; | |
2230 | exp.hint = exp.ordinal >= 0 ? exp.ordinal : 0; | |
2231 | exp.flag_private = 0; | |
2232 | exp.flag_constant = 0; | |
2233 | exp.flag_data = 0; | |
2234 | exp.flag_noname = exp.name ? 0 : 1; | |
2235 | one = make_one (&exp, output_bfd); | |
2236 | add_bfd_to_link (one, one->filename, link_info); | |
2237 | } | |
2238 | } | |
2239 | if (do_this_dll) | |
2240 | { | |
2241 | bfd *ar_tail = make_tail (output_bfd); | |
2242 | add_bfd_to_link (ar_tail, ar_tail->filename, link_info); | |
2243 | } | |
2244 | ||
2245 | free (dll_symname); | |
2246 | } | |
2247 | } | |
2248 | ||
775cabad NC |
2249 | /* We were handed a *.DLL file. Parse it and turn it into a set of |
2250 | IMPORTS directives in the def file. Return true if the file was | |
2251 | handled, false if not. */ | |
252b5132 RH |
2252 | |
2253 | static unsigned int | |
2254 | pe_get16 (abfd, where) | |
2255 | bfd *abfd; | |
2256 | int where; | |
2257 | { | |
2258 | unsigned char b[2]; | |
775cabad | 2259 | |
db09f25b AM |
2260 | bfd_seek (abfd, (file_ptr) where, SEEK_SET); |
2261 | bfd_bread (b, (bfd_size_type) 2, abfd); | |
d643799d | 2262 | return b[0] + (b[1] << 8); |
252b5132 RH |
2263 | } |
2264 | ||
2265 | static unsigned int | |
2266 | pe_get32 (abfd, where) | |
2267 | bfd *abfd; | |
2268 | int where; | |
2269 | { | |
2270 | unsigned char b[4]; | |
775cabad | 2271 | |
db09f25b AM |
2272 | bfd_seek (abfd, (file_ptr) where, SEEK_SET); |
2273 | bfd_bread (b, (bfd_size_type) 4, abfd); | |
d643799d | 2274 | return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24); |
252b5132 RH |
2275 | } |
2276 | ||
2277 | #if 0 /* This is not currently used. */ | |
2278 | ||
2279 | static unsigned int | |
2280 | pe_as16 (ptr) | |
2281 | void *ptr; | |
2282 | { | |
2283 | unsigned char *b = ptr; | |
775cabad | 2284 | |
d643799d | 2285 | return b[0] + (b[1] << 8); |
252b5132 RH |
2286 | } |
2287 | ||
2288 | #endif | |
2289 | ||
2290 | static unsigned int | |
2291 | pe_as32 (ptr) | |
2292 | void *ptr; | |
2293 | { | |
2294 | unsigned char *b = ptr; | |
775cabad | 2295 | |
d643799d | 2296 | return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24); |
252b5132 RH |
2297 | } |
2298 | ||
2299 | boolean | |
2300 | pe_implied_import_dll (filename) | |
1069dd8d | 2301 | const char *filename; |
252b5132 RH |
2302 | { |
2303 | bfd *dll; | |
2304 | unsigned long pe_header_offset, opthdr_ofs, num_entries, i; | |
2305 | unsigned long export_rva, export_size, nsections, secptr, expptr; | |
2306 | unsigned char *expdata, *erva; | |
2307 | unsigned long name_rvas, ordinals, nexp, ordbase; | |
1069dd8d | 2308 | const char *dll_name; |
252b5132 RH |
2309 | |
2310 | /* No, I can't use bfd here. kernel32.dll puts its export table in | |
5cc18311 | 2311 | the middle of the .rdata section. */ |
c6c37250 | 2312 | dll = bfd_openr (filename, pe_details->target_name); |
252b5132 RH |
2313 | if (!dll) |
2314 | { | |
2315 | einfo ("%Xopen %s: %s\n", filename, bfd_errmsg (bfd_get_error ())); | |
2316 | return false; | |
2317 | } | |
775cabad | 2318 | |
86b1cc60 | 2319 | /* PEI dlls seem to be bfd_objects. */ |
252b5132 RH |
2320 | if (!bfd_check_format (dll, bfd_object)) |
2321 | { | |
2322 | einfo ("%X%s: this doesn't appear to be a DLL\n", filename); | |
2323 | return false; | |
2324 | } | |
2325 | ||
2326 | dll_name = filename; | |
d643799d | 2327 | for (i = 0; filename[i]; i++) |
252b5132 RH |
2328 | if (filename[i] == '/' || filename[i] == '\\' || filename[i] == ':') |
2329 | dll_name = filename + i + 1; | |
2330 | ||
2331 | pe_header_offset = pe_get32 (dll, 0x3c); | |
2332 | opthdr_ofs = pe_header_offset + 4 + 20; | |
2333 | num_entries = pe_get32 (dll, opthdr_ofs + 92); | |
775cabad NC |
2334 | |
2335 | if (num_entries < 1) /* No exports. */ | |
252b5132 | 2336 | return false; |
775cabad | 2337 | |
252b5132 RH |
2338 | export_rva = pe_get32 (dll, opthdr_ofs + 96); |
2339 | export_size = pe_get32 (dll, opthdr_ofs + 100); | |
2340 | nsections = pe_get16 (dll, pe_header_offset + 4 + 2); | |
2341 | secptr = (pe_header_offset + 4 + 20 + | |
2342 | pe_get16 (dll, pe_header_offset + 4 + 16)); | |
2343 | expptr = 0; | |
775cabad | 2344 | |
d643799d | 2345 | for (i = 0; i < nsections; i++) |
252b5132 RH |
2346 | { |
2347 | char sname[8]; | |
2348 | unsigned long secptr1 = secptr + 40 * i; | |
2349 | unsigned long vaddr = pe_get32 (dll, secptr1 + 12); | |
2350 | unsigned long vsize = pe_get32 (dll, secptr1 + 16); | |
2351 | unsigned long fptr = pe_get32 (dll, secptr1 + 20); | |
775cabad | 2352 | |
db09f25b AM |
2353 | bfd_seek (dll, (file_ptr) secptr1, SEEK_SET); |
2354 | bfd_bread (sname, (bfd_size_type) 8, dll); | |
775cabad | 2355 | |
d643799d | 2356 | if (vaddr <= export_rva && vaddr + vsize > export_rva) |
252b5132 RH |
2357 | { |
2358 | expptr = fptr + (export_rva - vaddr); | |
2359 | if (export_rva + export_size > vaddr + vsize) | |
2360 | export_size = vsize - (export_rva - vaddr); | |
2361 | break; | |
2362 | } | |
2363 | } | |
2364 | ||
2365 | expdata = (unsigned char *) xmalloc (export_size); | |
db09f25b AM |
2366 | bfd_seek (dll, (file_ptr) expptr, SEEK_SET); |
2367 | bfd_bread (expdata, (bfd_size_type) export_size, dll); | |
252b5132 RH |
2368 | erva = expdata - export_rva; |
2369 | ||
2370 | if (pe_def_file == 0) | |
d643799d | 2371 | pe_def_file = def_file_empty (); |
252b5132 | 2372 | |
d643799d KH |
2373 | nexp = pe_as32 (expdata + 24); |
2374 | name_rvas = pe_as32 (expdata + 32); | |
2375 | ordinals = pe_as32 (expdata + 36); | |
2376 | ordbase = pe_as32 (expdata + 16); | |
775cabad | 2377 | |
d643799d | 2378 | for (i = 0; i < nexp; i++) |
252b5132 | 2379 | { |
d643799d | 2380 | unsigned long name_rva = pe_as32 (erva + name_rvas + i * 4); |
252b5132 | 2381 | def_file_import *imp; |
775cabad | 2382 | |
d643799d | 2383 | imp = def_file_add_import (pe_def_file, erva + name_rva, dll_name, |
252b5132 RH |
2384 | i, 0); |
2385 | } | |
2386 | ||
2387 | return true; | |
2388 | } | |
2389 | ||
775cabad NC |
2390 | /* These are the main functions, called from the emulation. The first |
2391 | is called after the bfds are read, so we can guess at how much space | |
2392 | we need. The second is called after everything is placed, so we | |
2393 | can put the right values in place. */ | |
252b5132 RH |
2394 | |
2395 | void | |
2396 | pe_dll_build_sections (abfd, info) | |
2397 | bfd *abfd; | |
2398 | struct bfd_link_info *info; | |
2399 | { | |
c6c37250 | 2400 | pe_dll_id_target (bfd_get_target (abfd)); |
252b5132 RH |
2401 | process_def_file (abfd, info); |
2402 | ||
2403 | generate_edata (abfd, info); | |
c6c37250 DD |
2404 | build_filler_bfd (1); |
2405 | } | |
2406 | ||
2407 | void | |
2408 | pe_exe_build_sections (abfd, info) | |
2409 | bfd *abfd; | |
1069dd8d | 2410 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
c6c37250 DD |
2411 | { |
2412 | pe_dll_id_target (bfd_get_target (abfd)); | |
2413 | build_filler_bfd (0); | |
252b5132 RH |
2414 | } |
2415 | ||
2416 | void | |
2417 | pe_dll_fill_sections (abfd, info) | |
2418 | bfd *abfd; | |
2419 | struct bfd_link_info *info; | |
2420 | { | |
c6c37250 | 2421 | pe_dll_id_target (bfd_get_target (abfd)); |
252b5132 RH |
2422 | image_base = pe_data (abfd)->pe_opthdr.ImageBase; |
2423 | ||
2424 | generate_reloc (abfd, info); | |
2425 | if (reloc_sz > 0) | |
2426 | { | |
2427 | bfd_set_section_size (filler_bfd, reloc_s, reloc_sz); | |
2428 | ||
2429 | /* Resize the sections. */ | |
2430 | lang_size_sections (stat_ptr->head, abs_output_section, | |
ae7fb08f | 2431 | &stat_ptr->head, 0, (bfd_vma) 0, NULL); |
252b5132 RH |
2432 | |
2433 | /* Redo special stuff. */ | |
2434 | ldemul_after_allocation (); | |
2435 | ||
2436 | /* Do the assignments again. */ | |
2437 | lang_do_assignments (stat_ptr->head, | |
2438 | abs_output_section, | |
2439 | (fill_type) 0, (bfd_vma) 0); | |
2440 | } | |
2441 | ||
2442 | fill_edata (abfd, info); | |
2443 | ||
2444 | pe_data (abfd)->dll = 1; | |
2445 | ||
2446 | edata_s->contents = edata_d; | |
2447 | reloc_s->contents = reloc_d; | |
2448 | } | |
c6c37250 DD |
2449 | |
2450 | void | |
2451 | pe_exe_fill_sections (abfd, info) | |
2452 | bfd *abfd; | |
2453 | struct bfd_link_info *info; | |
2454 | { | |
2455 | pe_dll_id_target (bfd_get_target (abfd)); | |
2456 | image_base = pe_data (abfd)->pe_opthdr.ImageBase; | |
2457 | ||
2458 | generate_reloc (abfd, info); | |
2459 | if (reloc_sz > 0) | |
2460 | { | |
2461 | bfd_set_section_size (filler_bfd, reloc_s, reloc_sz); | |
2462 | ||
2463 | /* Resize the sections. */ | |
2464 | lang_size_sections (stat_ptr->head, abs_output_section, | |
ae7fb08f | 2465 | &stat_ptr->head, 0, (bfd_vma) 0, NULL); |
c6c37250 DD |
2466 | |
2467 | /* Redo special stuff. */ | |
2468 | ldemul_after_allocation (); | |
2469 | ||
2470 | /* Do the assignments again. */ | |
2471 | lang_do_assignments (stat_ptr->head, | |
2472 | abs_output_section, | |
2473 | (fill_type) 0, (bfd_vma) 0); | |
2474 | } | |
2475 | reloc_s->contents = reloc_d; | |
2476 | } |