Commit | Line | Data |
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252b5132 | 1 | /* Routines to help build PEI-format DLLs (Win32 etc) |
53baae48 | 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
4d8907ac | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Written by DJ Delorie <dj@cygnus.com> |
5 | ||
6 | This file is part of GLD, the Gnu Linker. | |
7 | ||
8 | GLD is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GLD is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GLD; see the file COPYING. If not, write to the Free | |
75be928b NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 RH |
22 | |
23 | #include "bfd.h" | |
24 | #include "sysdep.h" | |
25 | #include "bfdlink.h" | |
26 | #include "libiberty.h" | |
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | |
29 | #include <time.h> | |
252b5132 RH |
30 | |
31 | #include "ld.h" | |
32 | #include "ldexp.h" | |
33 | #include "ldlang.h" | |
34 | #include "ldwrite.h" | |
35 | #include "ldmisc.h" | |
df2a7313 | 36 | #include <ldgram.h> |
252b5132 | 37 | #include "ldmain.h" |
b71e2778 | 38 | #include "ldfile.h" |
252b5132 RH |
39 | #include "ldemul.h" |
40 | #include "coff/internal.h" | |
41 | #include "../bfd/libcoff.h" | |
42 | #include "deffile.h" | |
1069dd8d | 43 | #include "pe-dll.h" |
252b5132 | 44 | |
775cabad NC |
45 | /* This file turns a regular Windows PE image into a DLL. Because of |
46 | the complexity of this operation, it has been broken down into a | |
47 | number of separate modules which are all called by the main function | |
48 | at the end of this file. This function is not re-entrant and is | |
49 | normally only called once, so static variables are used to reduce | |
50 | the number of parameters and return values required. | |
b7a26f91 | 51 | |
775cabad NC |
52 | See also: ld/emultempl/pe.em. */ |
53 | ||
54 | /* Auto-import feature by Paul Sokolovsky | |
55 | ||
56 | Quick facts: | |
57 | ||
58 | 1. With this feature on, DLL clients can import variables from DLL | |
59 | without any concern from their side (for example, without any source | |
60 | code modifications). | |
61 | ||
62 | 2. This is done completely in bounds of the PE specification (to be fair, | |
396a2467 | 63 | there's a place where it pokes nose out of, but in practice it works). |
775cabad NC |
64 | So, resulting module can be used with any other PE compiler/linker. |
65 | ||
66 | 3. Auto-import is fully compatible with standard import method and they | |
67 | can be mixed together. | |
68 | ||
69 | 4. Overheads: space: 8 bytes per imported symbol, plus 20 for each | |
70 | reference to it; load time: negligible; virtual/physical memory: should be | |
71 | less than effect of DLL relocation, and I sincerely hope it doesn't affect | |
72 | DLL sharability (too much). | |
73 | ||
74 | Idea | |
75 | ||
76 | The obvious and only way to get rid of dllimport insanity is to make client | |
77 | access variable directly in the DLL, bypassing extra dereference. I.e., | |
396a2467 | 78 | whenever client contains something like |
775cabad NC |
79 | |
80 | mov dll_var,%eax, | |
81 | ||
82 | address of dll_var in the command should be relocated to point into loaded | |
83 | DLL. The aim is to make OS loader do so, and than make ld help with that. | |
84 | Import section of PE made following way: there's a vector of structures | |
85 | each describing imports from particular DLL. Each such structure points | |
396a2467 | 86 | to two other parallel vectors: one holding imported names, and one which |
775cabad NC |
87 | will hold address of corresponding imported name. So, the solution is |
88 | de-vectorize these structures, making import locations be sparse and | |
89 | pointing directly into code. Before continuing, it is worth a note that, | |
90 | while authors strives to make PE act ELF-like, there're some other people | |
91 | make ELF act PE-like: elfvector, ;-) . | |
92 | ||
93 | Implementation | |
94 | ||
95 | For each reference of data symbol to be imported from DLL (to set of which | |
96 | belong symbols with name <sym>, if __imp_<sym> is found in implib), the | |
97 | import fixup entry is generated. That entry is of type | |
53baae48 | 98 | IMAGE_IMPORT_DESCRIPTOR and stored in .idata$2 subsection. Each |
775cabad NC |
99 | fixup entry contains pointer to symbol's address within .text section |
100 | (marked with __fuN_<sym> symbol, where N is integer), pointer to DLL name | |
101 | (so, DLL name is referenced by multiple entries), and pointer to symbol | |
102 | name thunk. Symbol name thunk is singleton vector (__nm_th_<symbol>) | |
103 | pointing to IMAGE_IMPORT_BY_NAME structure (__nm_<symbol>) directly | |
104 | containing imported name. Here comes that "om the edge" problem mentioned | |
105 | above: PE specification rambles that name vector (OriginalFirstThunk) | |
106 | should run in parallel with addresses vector (FirstThunk), i.e. that they | |
107 | should have same number of elements and terminated with zero. We violate | |
396a2467 | 108 | this, since FirstThunk points directly into machine code. But in practice, |
775cabad NC |
109 | OS loader implemented the sane way: it goes thru OriginalFirstThunk and |
110 | puts addresses to FirstThunk, not something else. It once again should be | |
111 | noted that dll and symbol name structures are reused across fixup entries | |
112 | and should be there anyway to support standard import stuff, so sustained | |
113 | overhead is 20 bytes per reference. Other question is whether having several | |
114 | IMAGE_IMPORT_DESCRIPTORS for the same DLL is possible. Answer is yes, it is | |
115 | done even by native compiler/linker (libth32's functions are in fact reside | |
116 | in windows9x kernel32.dll, so if you use it, you have two | |
117 | IMAGE_IMPORT_DESCRIPTORS for kernel32.dll). Yet other question is whether | |
118 | referencing the same PE structures several times is valid. The answer is why | |
396a2467 | 119 | not, prohibiting that (detecting violation) would require more work on |
775cabad NC |
120 | behalf of loader than not doing it. |
121 | ||
122 | See also: ld/emultempl/pe.em. */ | |
b044cda1 | 123 | |
1579bae1 | 124 | static void add_bfd_to_link (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 | 140 | static bfd *filler_bfd; |
198beae2 | 141 | static struct bfd_section *edata_s, *reloc_s; |
252b5132 | 142 | static unsigned char *edata_d, *reloc_d; |
1069dd8d | 143 | static size_t edata_sz, reloc_sz; |
2fa9fc65 | 144 | static int runtime_pseudo_relocs_created = 0; |
252b5132 | 145 | |
775cabad NC |
146 | typedef struct |
147 | { | |
148 | char *target_name; | |
149 | char *object_target; | |
150 | unsigned int imagebase_reloc; | |
151 | int pe_arch; | |
152 | int bfd_arch; | |
153 | int underscored; | |
154 | } | |
155 | pe_details_type; | |
156 | ||
157 | typedef struct | |
158 | { | |
159 | char *name; | |
160 | int len; | |
161 | } | |
162 | autofilter_entry_type; | |
b044cda1 | 163 | |
c6c37250 | 164 | #define PE_ARCH_i386 1 |
344a211f NC |
165 | #define PE_ARCH_sh 2 |
166 | #define PE_ARCH_mips 3 | |
167 | #define PE_ARCH_arm 4 | |
775cabad | 168 | #define PE_ARCH_arm_epoc 5 |
c6c37250 | 169 | |
775cabad NC |
170 | static pe_details_type pe_detail_list[] = |
171 | { | |
c6c37250 DD |
172 | { |
173 | "pei-i386", | |
174 | "pe-i386", | |
175 | 7 /* R_IMAGEBASE */, | |
176 | PE_ARCH_i386, | |
177 | bfd_arch_i386, | |
178 | 1 | |
179 | }, | |
344a211f NC |
180 | { |
181 | "pei-shl", | |
182 | "pe-shl", | |
183 | 16 /* R_SH_IMAGEBASE */, | |
184 | PE_ARCH_sh, | |
185 | bfd_arch_sh, | |
186 | 1 | |
187 | }, | |
188 | { | |
189 | "pei-mips", | |
190 | "pe-mips", | |
191 | 34 /* MIPS_R_RVA */, | |
192 | PE_ARCH_mips, | |
193 | bfd_arch_mips, | |
194 | 0 | |
195 | }, | |
196 | { | |
197 | "pei-arm-little", | |
198 | "pe-arm-little", | |
199 | 11 /* ARM_RVA32 */, | |
200 | PE_ARCH_arm, | |
201 | bfd_arch_arm, | |
2b817be1 | 202 | 1 |
344a211f | 203 | }, |
775cabad NC |
204 | { |
205 | "epoc-pei-arm-little", | |
206 | "epoc-pe-arm-little", | |
207 | 11 /* ARM_RVA32 */, | |
208 | PE_ARCH_arm_epoc, | |
209 | bfd_arch_arm, | |
210 | 0 | |
211 | }, | |
1069dd8d | 212 | { NULL, NULL, 0, 0, 0, 0 } |
c6c37250 DD |
213 | }; |
214 | ||
215 | static pe_details_type *pe_details; | |
216 | ||
775cabad NC |
217 | static autofilter_entry_type autofilter_symbollist[] = |
218 | { | |
53baae48 NC |
219 | { "DllMain", 7 }, |
220 | { "DllMainCRTStartup", 17 }, | |
221 | { "_DllMainCRTStartup", 18 }, | |
b044cda1 CW |
222 | { "DllMain@12", 10 }, |
223 | { "DllEntryPoint@0", 15 }, | |
224 | { "DllMainCRTStartup@12", 20 }, | |
225 | { "_cygwin_dll_entry@12", 20 }, | |
226 | { "_cygwin_crt0_common@8", 21 }, | |
227 | { "_cygwin_noncygwin_dll_entry@12", 30 }, | |
228 | { "impure_ptr", 10 }, | |
1c43e6e5 NC |
229 | { "_pei386_runtime_relocator", 25 }, |
230 | { "do_pseudo_reloc", 15 }, | |
54d4efe3 | 231 | { "cygwin_crt0", 11 }, |
53baae48 | 232 | { ".text", 5 }, |
b044cda1 CW |
233 | { NULL, 0 } |
234 | }; | |
775cabad NC |
235 | |
236 | /* Do not specify library suffix explicitly, to allow for dllized versions. */ | |
237 | static autofilter_entry_type autofilter_liblist[] = | |
238 | { | |
53baae48 | 239 | { "libcegcc", 8 }, |
602d6c6f | 240 | { "libcygwin", 9 }, |
75c2ea5b CF |
241 | { "libgcc", 6 }, |
242 | { "libstdc++", 9 }, | |
243 | { "libmingw32", 10 }, | |
9e8d33e7 | 244 | { "libmingwex", 10 }, |
75c2ea5b CF |
245 | { "libg2c", 6 }, |
246 | { "libsupc++", 9 }, | |
247 | { "libobjc", 7 }, | |
9e8d33e7 | 248 | { "libgcj", 6 }, |
b044cda1 CW |
249 | { NULL, 0 } |
250 | }; | |
775cabad NC |
251 | |
252 | static autofilter_entry_type autofilter_objlist[] = | |
253 | { | |
b044cda1 CW |
254 | { "crt0.o", 6 }, |
255 | { "crt1.o", 6 }, | |
256 | { "crt2.o", 6 }, | |
5b784096 DD |
257 | { "dllcrt1.o", 9 }, |
258 | { "dllcrt2.o", 9 }, | |
59d28a94 | 259 | { "gcrt0.o", 7 }, |
663dd378 | 260 | { "gcrt1.o", 7 }, |
b7a26f91 | 261 | { "gcrt2.o", 7 }, |
70b0be79 CF |
262 | { "crtbegin.o", 10 }, |
263 | { "crtend.o", 8 }, | |
b044cda1 CW |
264 | { NULL, 0 } |
265 | }; | |
775cabad NC |
266 | |
267 | static autofilter_entry_type autofilter_symbolprefixlist[] = | |
268 | { | |
53baae48 | 269 | { "__imp_", 6 }, |
775cabad | 270 | /* Do __imp_ explicitly to save time. */ |
b044cda1 | 271 | { "__rtti_", 7 }, |
53baae48 | 272 | { ".idata$", 7 }, |
39cebe23 NC |
273 | /* Don't re-export auto-imported symbols. */ |
274 | { "_nm_", 4 }, | |
b044cda1 | 275 | { "__builtin_", 10 }, |
775cabad NC |
276 | /* Don't export symbols specifying internal DLL layout. */ |
277 | { "_head_", 6 }, | |
b044cda1 CW |
278 | { "_fmode", 6 }, |
279 | { "_impure_ptr", 11 }, | |
280 | { "cygwin_attach_dll", 17 }, | |
281 | { "cygwin_premain0", 15 }, | |
282 | { "cygwin_premain1", 15 }, | |
283 | { "cygwin_premain2", 15 }, | |
284 | { "cygwin_premain3", 15 }, | |
285 | { "environ", 7 }, | |
286 | { NULL, 0 } | |
287 | }; | |
775cabad NC |
288 | |
289 | static autofilter_entry_type autofilter_symbolsuffixlist[] = | |
290 | { | |
b044cda1 CW |
291 | { "_iname", 6 }, |
292 | { NULL, 0 } | |
293 | }; | |
294 | ||
c6c37250 DD |
295 | #define U(str) (pe_details->underscored ? "_" str : str) |
296 | ||
297 | void | |
1579bae1 | 298 | pe_dll_id_target (const char *target) |
c6c37250 DD |
299 | { |
300 | int i; | |
775cabad | 301 | |
d643799d | 302 | for (i = 0; pe_detail_list[i].target_name; i++) |
9d68bc82 DD |
303 | if (strcmp (pe_detail_list[i].target_name, target) == 0 |
304 | || strcmp (pe_detail_list[i].object_target, target) == 0) | |
c6c37250 | 305 | { |
d643799d | 306 | pe_details = pe_detail_list + i; |
c6c37250 DD |
307 | return; |
308 | } | |
309 | einfo (_("%XUnsupported PEI architecture: %s\n"), target); | |
310 | exit (1); | |
311 | } | |
312 | ||
b7a26f91 | 313 | /* Helper functions for qsort. Relocs must be sorted so that we can write |
775cabad | 314 | them out by pages. */ |
252b5132 | 315 | |
775cabad NC |
316 | typedef struct |
317 | { | |
318 | bfd_vma vma; | |
319 | char type; | |
320 | short extra; | |
321 | } | |
322 | reloc_data_type; | |
c6c37250 | 323 | |
252b5132 | 324 | static int |
1579bae1 | 325 | reloc_sort (const void *va, const void *vb) |
252b5132 | 326 | { |
1579bae1 AM |
327 | bfd_vma a = ((const reloc_data_type *) va)->vma; |
328 | bfd_vma b = ((const reloc_data_type *) vb)->vma; | |
775cabad | 329 | |
c6c37250 | 330 | return (a > b) ? 1 : ((a < b) ? -1 : 0); |
252b5132 RH |
331 | } |
332 | ||
333 | static int | |
1579bae1 | 334 | pe_export_sort (const void *va, const void *vb) |
252b5132 | 335 | { |
1579bae1 AM |
336 | const def_file_export *a = va; |
337 | const def_file_export *b = vb; | |
775cabad | 338 | |
252b5132 RH |
339 | return strcmp (a->name, b->name); |
340 | } | |
341 | ||
775cabad | 342 | /* Read and process the .DEF file. */ |
252b5132 RH |
343 | |
344 | /* These correspond to the entries in pe_def_file->exports[]. I use | |
345 | exported_symbol_sections[i] to tag whether or not the symbol was | |
5cc18311 | 346 | defined, since we can't export symbols we don't have. */ |
252b5132 RH |
347 | |
348 | static bfd_vma *exported_symbol_offsets; | |
198beae2 | 349 | static struct bfd_section **exported_symbol_sections; |
252b5132 RH |
350 | static int export_table_size; |
351 | static int count_exported; | |
352 | static int count_exported_byname; | |
353 | static int count_with_ordinals; | |
354 | static const char *dll_name; | |
355 | static int min_ordinal, max_ordinal; | |
356 | static int *exported_symbols; | |
357 | ||
775cabad NC |
358 | typedef struct exclude_list_struct |
359 | { | |
360 | char *string; | |
361 | struct exclude_list_struct *next; | |
658957db | 362 | int type; |
775cabad NC |
363 | } |
364 | exclude_list_struct; | |
86b1cc60 | 365 | |
252b5132 RH |
366 | static struct exclude_list_struct *excludes = 0; |
367 | ||
368 | void | |
1579bae1 | 369 | pe_dll_add_excludes (const char *new_excludes, const int type) |
252b5132 RH |
370 | { |
371 | char *local_copy; | |
372 | char *exclude_string; | |
373 | ||
374 | local_copy = xstrdup (new_excludes); | |
375 | ||
376 | exclude_string = strtok (local_copy, ",:"); | |
377 | for (; exclude_string; exclude_string = strtok (NULL, ",:")) | |
378 | { | |
379 | struct exclude_list_struct *new_exclude; | |
380 | ||
1579bae1 AM |
381 | new_exclude = xmalloc (sizeof (struct exclude_list_struct)); |
382 | new_exclude->string = xmalloc (strlen (exclude_string) + 1); | |
252b5132 | 383 | strcpy (new_exclude->string, exclude_string); |
70b0be79 | 384 | new_exclude->type = type; |
252b5132 RH |
385 | new_exclude->next = excludes; |
386 | excludes = new_exclude; | |
387 | } | |
388 | ||
389 | free (local_copy); | |
390 | } | |
391 | ||
70b0be79 | 392 | |
775cabad NC |
393 | /* abfd is a bfd containing n (or NULL) |
394 | It can be used for contextual checks. */ | |
395 | ||
252b5132 | 396 | static int |
1579bae1 | 397 | auto_export (bfd *abfd, def_file *d, const char *n) |
252b5132 RH |
398 | { |
399 | int i; | |
400 | struct exclude_list_struct *ex; | |
b044cda1 | 401 | autofilter_entry_type *afptr; |
70b0be79 CF |
402 | const char * libname = 0; |
403 | if (abfd && abfd->my_archive) | |
404 | libname = lbasename (abfd->my_archive->filename); | |
b044cda1 | 405 | |
775cabad | 406 | /* We should not re-export imported stuff. */ |
13ed4151 | 407 | if (strncmp (n, "_imp_", 5) == 0) |
b044cda1 CW |
408 | return 0; |
409 | ||
252b5132 RH |
410 | for (i = 0; i < d->num_exports; i++) |
411 | if (strcmp (d->exports[i].name, n) == 0) | |
412 | return 0; | |
775cabad | 413 | |
252b5132 RH |
414 | if (pe_dll_do_default_excludes) |
415 | { | |
663dd378 | 416 | const char * p; |
775cabad NC |
417 | int len; |
418 | ||
b044cda1 | 419 | if (pe_dll_extra_pe_debug) |
775cabad NC |
420 | printf ("considering exporting: %s, abfd=%p, abfd->my_arc=%p\n", |
421 | n, abfd, abfd->my_archive); | |
b044cda1 CW |
422 | |
423 | /* First of all, make context checks: | |
1579bae1 | 424 | Don't export anything from standard libs. */ |
658957db | 425 | if (libname) |
b044cda1 CW |
426 | { |
427 | afptr = autofilter_liblist; | |
775cabad | 428 | |
b044cda1 CW |
429 | while (afptr->name) |
430 | { | |
70b0be79 | 431 | if (strncmp (libname, afptr->name, afptr->len) == 0 ) |
b044cda1 CW |
432 | return 0; |
433 | afptr++; | |
434 | } | |
435 | } | |
436 | ||
775cabad | 437 | /* Next, exclude symbols from certain startup objects. */ |
775cabad | 438 | |
59d28a94 | 439 | if (abfd && (p = lbasename (abfd->filename))) |
663dd378 | 440 | { |
b7a26f91 KH |
441 | afptr = autofilter_objlist; |
442 | while (afptr->name) | |
59d28a94 | 443 | { |
b7a26f91 KH |
444 | if (strcmp (p, afptr->name) == 0) |
445 | return 0; | |
59d28a94 | 446 | afptr++; |
663dd378 | 447 | } |
775cabad | 448 | } |
b044cda1 CW |
449 | |
450 | /* Don't try to blindly exclude all symbols | |
451 | that begin with '__'; this was tried and | |
775cabad | 452 | it is too restrictive. */ |
b044cda1 | 453 | |
775cabad | 454 | /* Then, exclude specific symbols. */ |
b044cda1 CW |
455 | afptr = autofilter_symbollist; |
456 | while (afptr->name) | |
457 | { | |
458 | if (strcmp (n, afptr->name) == 0) | |
459 | return 0; | |
775cabad | 460 | |
b7a26f91 | 461 | afptr++; |
b044cda1 CW |
462 | } |
463 | ||
775cabad | 464 | /* Next, exclude symbols starting with ... */ |
b044cda1 CW |
465 | afptr = autofilter_symbolprefixlist; |
466 | while (afptr->name) | |
467 | { | |
468 | if (strncmp (n, afptr->name, afptr->len) == 0) | |
469 | return 0; | |
775cabad | 470 | |
b7a26f91 | 471 | afptr++; |
b044cda1 CW |
472 | } |
473 | ||
775cabad NC |
474 | /* Finally, exclude symbols ending with ... */ |
475 | len = strlen (n); | |
476 | afptr = autofilter_symbolsuffixlist; | |
477 | while (afptr->name) | |
478 | { | |
b7a26f91 | 479 | if ((len >= afptr->len) |
775cabad | 480 | /* Add 1 to insure match with trailing '\0'. */ |
b7a26f91 KH |
481 | && strncmp (n + len - afptr->len, afptr->name, |
482 | afptr->len + 1) == 0) | |
775cabad NC |
483 | return 0; |
484 | ||
b7a26f91 | 485 | afptr++; |
775cabad | 486 | } |
252b5132 | 487 | } |
775cabad | 488 | |
252b5132 | 489 | for (ex = excludes; ex; ex = ex->next) |
70b0be79 CF |
490 | { |
491 | if (ex->type == 1) /* exclude-libs */ | |
492 | { | |
493 | if (libname | |
494 | && ((strcmp (libname, ex->string) == 0) | |
495 | || (strcasecmp ("ALL", ex->string) == 0))) | |
496 | return 0; | |
497 | } | |
498 | else if (strcmp (n, ex->string) == 0) | |
658957db | 499 | return 0; |
70b0be79 | 500 | } |
775cabad | 501 | |
252b5132 RH |
502 | return 1; |
503 | } | |
504 | ||
505 | static void | |
1579bae1 | 506 | process_def_file (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
252b5132 RH |
507 | { |
508 | int i, j; | |
509 | struct bfd_link_hash_entry *blhe; | |
510 | bfd *b; | |
198beae2 | 511 | struct bfd_section *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 | { | |
eea6121a | 524 | long size = s->size; |
252b5132 | 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 | ||
2b817be1 NC |
533 | /* If we are not building a DLL, when there are no exports |
534 | we do not build an export table at all. */ | |
535 | if (!pe_dll_export_everything && pe_def_file->num_exports == 0 | |
7b0eaa22 | 536 | && info->executable) |
2b817be1 NC |
537 | return; |
538 | ||
86b1cc60 | 539 | /* Now, maybe export everything else the default way. */ |
252b5132 RH |
540 | if (pe_dll_export_everything || pe_def_file->num_exports == 0) |
541 | { | |
542 | for (b = info->input_bfds; b; b = b->link_next) | |
543 | { | |
544 | asymbol **symbols; | |
545 | int nsyms, symsize; | |
546 | ||
547 | symsize = bfd_get_symtab_upper_bound (b); | |
1579bae1 | 548 | symbols = xmalloc (symsize); |
252b5132 RH |
549 | nsyms = bfd_canonicalize_symtab (b, symbols); |
550 | ||
551 | for (j = 0; j < nsyms; j++) | |
552 | { | |
d643799d | 553 | /* We should export symbols which are either global or not |
1579bae1 AM |
554 | anything at all. (.bss data is the latter) |
555 | We should not export undefined symbols. */ | |
b044cda1 CW |
556 | if (symbols[j]->section != &bfd_und_section |
557 | && ((symbols[j]->flags & BSF_GLOBAL) | |
558 | || (symbols[j]->flags == BFD_FORT_COMM_DEFAULT_VALUE))) | |
252b5132 RH |
559 | { |
560 | const char *sn = symbols[j]->name; | |
b044cda1 | 561 | |
775cabad | 562 | /* We should not re-export imported stuff. */ |
b044cda1 | 563 | { |
1579bae1 | 564 | char *name = xmalloc (strlen (sn) + 2 + 6); |
b044cda1 | 565 | sprintf (name, "%s%s", U("_imp_"), sn); |
775cabad | 566 | |
b044cda1 | 567 | blhe = bfd_link_hash_lookup (info->hash, name, |
b34976b6 | 568 | FALSE, FALSE, FALSE); |
b044cda1 CW |
569 | free (name); |
570 | ||
b7a26f91 | 571 | if (blhe && blhe->type == bfd_link_hash_defined) |
b044cda1 CW |
572 | continue; |
573 | } | |
574 | ||
252b5132 RH |
575 | if (*sn == '_') |
576 | sn++; | |
775cabad | 577 | |
b044cda1 CW |
578 | if (auto_export (b, pe_def_file, sn)) |
579 | { | |
580 | def_file_export *p; | |
581 | p=def_file_add_export (pe_def_file, sn, 0, -1); | |
775cabad | 582 | /* Fill data flag properly, from dlltool.c. */ |
b044cda1 CW |
583 | p->flag_data = !(symbols[j]->flags & BSF_FUNCTION); |
584 | } | |
252b5132 RH |
585 | } |
586 | } | |
587 | } | |
588 | } | |
589 | ||
590 | #undef NE | |
591 | #define NE pe_def_file->num_exports | |
592 | ||
86b1cc60 | 593 | /* Canonicalize the export list. */ |
252b5132 RH |
594 | if (pe_dll_kill_ats) |
595 | { | |
596 | for (i = 0; i < NE; i++) | |
597 | { | |
598 | if (strchr (pe_def_file->exports[i].name, '@')) | |
599 | { | |
86b1cc60 | 600 | /* This will preserve internal_name, which may have been |
1579bae1 AM |
601 | pointing to the same memory as name, or might not |
602 | have. */ | |
603 | int lead_at = (*pe_def_file->exports[i].name == '@'); | |
c9e38879 | 604 | char *tmp = xstrdup (pe_def_file->exports[i].name + lead_at); |
a8d701fd | 605 | char *tmp_at = strchr (tmp, '@'); |
775cabad | 606 | |
a8d701fd DS |
607 | if (tmp_at) |
608 | *tmp_at = 0; | |
609 | else | |
610 | einfo (_("%XCannot export %s: invalid export name\n"), | |
611 | pe_def_file->exports[i].name); | |
252b5132 RH |
612 | pe_def_file->exports[i].name = tmp; |
613 | } | |
614 | } | |
615 | } | |
616 | ||
617 | if (pe_dll_stdcall_aliases) | |
618 | { | |
619 | for (i = 0; i < NE; i++) | |
620 | { | |
621 | if (strchr (pe_def_file->exports[i].name, '@')) | |
622 | { | |
1579bae1 | 623 | int lead_at = (*pe_def_file->exports[i].name == '@'); |
c9e38879 | 624 | char *tmp = xstrdup (pe_def_file->exports[i].name + lead_at); |
775cabad | 625 | |
252b5132 | 626 | *(strchr (tmp, '@')) = 0; |
b044cda1 | 627 | if (auto_export (NULL, pe_def_file, tmp)) |
252b5132 | 628 | def_file_add_export (pe_def_file, tmp, |
b044cda1 CW |
629 | pe_def_file->exports[i].internal_name, |
630 | -1); | |
252b5132 RH |
631 | else |
632 | free (tmp); | |
633 | } | |
634 | } | |
635 | } | |
636 | ||
86b1cc60 KH |
637 | /* Convenience, but watch out for it changing. */ |
638 | e = pe_def_file->exports; | |
252b5132 | 639 | |
1579bae1 | 640 | exported_symbol_offsets = xmalloc (NE * sizeof (bfd_vma)); |
198beae2 | 641 | exported_symbol_sections = xmalloc (NE * sizeof (struct bfd_section *)); |
252b5132 | 642 | |
198beae2 | 643 | memset (exported_symbol_sections, 0, NE * sizeof (struct bfd_section *)); |
252b5132 RH |
644 | max_ordinal = 0; |
645 | min_ordinal = 65536; | |
646 | count_exported = 0; | |
647 | count_exported_byname = 0; | |
648 | count_with_ordinals = 0; | |
649 | ||
1579bae1 AM |
650 | qsort (pe_def_file->exports, NE, sizeof (pe_def_file->exports[0]), |
651 | pe_export_sort); | |
252b5132 RH |
652 | for (i = 0, j = 0; i < NE; i++) |
653 | { | |
654 | if (i > 0 && strcmp (e[i].name, e[i - 1].name) == 0) | |
655 | { | |
870df5dc | 656 | /* This is a duplicate. */ |
252b5132 RH |
657 | if (e[j - 1].ordinal != -1 |
658 | && e[i].ordinal != -1 | |
659 | && e[j - 1].ordinal != e[i].ordinal) | |
660 | { | |
870df5dc NC |
661 | if (pe_dll_warn_dup_exports) |
662 | /* xgettext:c-format */ | |
486e80e2 | 663 | einfo (_("%XError, duplicate EXPORT with ordinals: %s (%d vs %d)\n"), |
870df5dc | 664 | e[j - 1].name, e[j - 1].ordinal, e[i].ordinal); |
252b5132 RH |
665 | } |
666 | else | |
667 | { | |
870df5dc NC |
668 | if (pe_dll_warn_dup_exports) |
669 | /* xgettext:c-format */ | |
670 | einfo (_("Warning, duplicate EXPORT: %s\n"), | |
671 | e[j - 1].name); | |
252b5132 | 672 | } |
775cabad | 673 | |
486e80e2 | 674 | if (e[i].ordinal != -1) |
252b5132 RH |
675 | e[j - 1].ordinal = e[i].ordinal; |
676 | e[j - 1].flag_private |= e[i].flag_private; | |
677 | e[j - 1].flag_constant |= e[i].flag_constant; | |
678 | e[j - 1].flag_noname |= e[i].flag_noname; | |
679 | e[j - 1].flag_data |= e[i].flag_data; | |
680 | } | |
681 | else | |
682 | { | |
683 | if (i != j) | |
684 | e[j] = e[i]; | |
685 | j++; | |
686 | } | |
687 | } | |
688 | pe_def_file->num_exports = j; /* == NE */ | |
689 | ||
690 | for (i = 0; i < NE; i++) | |
691 | { | |
1579bae1 | 692 | char *name; |
775cabad | 693 | |
a8d701fd DS |
694 | /* Check for forward exports */ |
695 | if (strchr (pe_def_file->exports[i].internal_name, '.')) | |
696 | { | |
697 | count_exported++; | |
698 | if (!pe_def_file->exports[i].flag_noname) | |
699 | count_exported_byname++; | |
700 | ||
701 | pe_def_file->exports[i].flag_forward = 1; | |
702 | ||
703 | if (pe_def_file->exports[i].ordinal != -1) | |
704 | { | |
705 | if (max_ordinal < pe_def_file->exports[i].ordinal) | |
706 | max_ordinal = pe_def_file->exports[i].ordinal; | |
707 | if (min_ordinal > pe_def_file->exports[i].ordinal) | |
708 | min_ordinal = pe_def_file->exports[i].ordinal; | |
709 | count_with_ordinals++; | |
710 | } | |
711 | ||
712 | continue; | |
713 | } | |
714 | ||
1579bae1 | 715 | name = xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2); |
c9e38879 NC |
716 | if (pe_details->underscored |
717 | && (*pe_def_file->exports[i].internal_name != '@')) | |
c6c37250 DD |
718 | { |
719 | *name = '_'; | |
720 | strcpy (name + 1, pe_def_file->exports[i].internal_name); | |
721 | } | |
722 | else | |
723 | strcpy (name, pe_def_file->exports[i].internal_name); | |
252b5132 RH |
724 | |
725 | blhe = bfd_link_hash_lookup (info->hash, | |
726 | name, | |
b34976b6 | 727 | FALSE, FALSE, TRUE); |
252b5132 | 728 | |
8a5b676c | 729 | if (blhe |
d643799d | 730 | && (blhe->type == bfd_link_hash_defined |
8a5b676c | 731 | || (blhe->type == bfd_link_hash_common))) |
252b5132 RH |
732 | { |
733 | count_exported++; | |
734 | if (!pe_def_file->exports[i].flag_noname) | |
735 | count_exported_byname++; | |
8a5b676c DD |
736 | |
737 | /* Only fill in the sections. The actual offsets are computed | |
738 | in fill_exported_offsets() after common symbols are laid | |
739 | out. */ | |
d643799d | 740 | if (blhe->type == bfd_link_hash_defined) |
8a5b676c DD |
741 | exported_symbol_sections[i] = blhe->u.def.section; |
742 | else | |
743 | exported_symbol_sections[i] = blhe->u.c.p->section; | |
5cc18311 | 744 | |
252b5132 RH |
745 | if (pe_def_file->exports[i].ordinal != -1) |
746 | { | |
747 | if (max_ordinal < pe_def_file->exports[i].ordinal) | |
748 | max_ordinal = pe_def_file->exports[i].ordinal; | |
749 | if (min_ordinal > pe_def_file->exports[i].ordinal) | |
750 | min_ordinal = pe_def_file->exports[i].ordinal; | |
751 | count_with_ordinals++; | |
752 | } | |
753 | } | |
754 | else if (blhe && blhe->type == bfd_link_hash_undefined) | |
755 | { | |
756 | /* xgettext:c-format */ | |
757 | einfo (_("%XCannot export %s: symbol not defined\n"), | |
758 | pe_def_file->exports[i].internal_name); | |
759 | } | |
760 | else if (blhe) | |
761 | { | |
762 | /* xgettext:c-format */ | |
763 | einfo (_("%XCannot export %s: symbol wrong type (%d vs %d)\n"), | |
764 | pe_def_file->exports[i].internal_name, | |
765 | blhe->type, bfd_link_hash_defined); | |
766 | } | |
767 | else | |
768 | { | |
769 | /* xgettext:c-format */ | |
770 | einfo (_("%XCannot export %s: symbol not found\n"), | |
771 | pe_def_file->exports[i].internal_name); | |
772 | } | |
773 | free (name); | |
774 | } | |
775 | } | |
776 | ||
775cabad | 777 | /* Build the bfd that will contain .edata and .reloc sections. */ |
252b5132 RH |
778 | |
779 | static void | |
1579bae1 | 780 | build_filler_bfd (int include_edata) |
252b5132 RH |
781 | { |
782 | lang_input_statement_type *filler_file; | |
783 | filler_file = lang_add_input_file ("dll stuff", | |
784 | lang_input_file_is_fake_enum, | |
785 | NULL); | |
786 | filler_file->the_bfd = filler_bfd = bfd_create ("dll stuff", output_bfd); | |
787 | if (filler_bfd == NULL | |
788 | || !bfd_set_arch_mach (filler_bfd, | |
789 | bfd_get_arch (output_bfd), | |
790 | bfd_get_mach (output_bfd))) | |
791 | { | |
36230712 | 792 | einfo ("%X%P: can not create BFD: %E\n"); |
252b5132 RH |
793 | return; |
794 | } | |
795 | ||
c6c37250 | 796 | if (include_edata) |
252b5132 | 797 | { |
c6c37250 DD |
798 | edata_s = bfd_make_section_old_way (filler_bfd, ".edata"); |
799 | if (edata_s == NULL | |
800 | || !bfd_set_section_flags (filler_bfd, edata_s, | |
801 | (SEC_HAS_CONTENTS | |
802 | | SEC_ALLOC | |
803 | | SEC_LOAD | |
804 | | SEC_KEEP | |
805 | | SEC_IN_MEMORY))) | |
806 | { | |
807 | einfo ("%X%P: can not create .edata section: %E\n"); | |
808 | return; | |
809 | } | |
810 | bfd_set_section_size (filler_bfd, edata_s, edata_sz); | |
252b5132 | 811 | } |
252b5132 RH |
812 | |
813 | reloc_s = bfd_make_section_old_way (filler_bfd, ".reloc"); | |
814 | if (reloc_s == NULL | |
815 | || !bfd_set_section_flags (filler_bfd, reloc_s, | |
816 | (SEC_HAS_CONTENTS | |
817 | | SEC_ALLOC | |
818 | | SEC_LOAD | |
819 | | SEC_KEEP | |
820 | | SEC_IN_MEMORY))) | |
821 | { | |
822 | einfo ("%X%P: can not create .reloc section: %E\n"); | |
823 | return; | |
824 | } | |
775cabad | 825 | |
252b5132 RH |
826 | bfd_set_section_size (filler_bfd, reloc_s, 0); |
827 | ||
828 | ldlang_add_file (filler_file); | |
829 | } | |
830 | ||
775cabad | 831 | /* Gather all the exported symbols and build the .edata section. */ |
252b5132 RH |
832 | |
833 | static void | |
1579bae1 | 834 | generate_edata (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) |
252b5132 RH |
835 | { |
836 | int i, next_ordinal; | |
837 | int name_table_size = 0; | |
838 | const char *dlnp; | |
839 | ||
840 | /* First, we need to know how many exported symbols there are, | |
5cc18311 | 841 | and what the range of ordinals is. */ |
252b5132 | 842 | if (pe_def_file->name) |
775cabad | 843 | dll_name = pe_def_file->name; |
252b5132 RH |
844 | else |
845 | { | |
846 | dll_name = abfd->filename; | |
775cabad | 847 | |
252b5132 | 848 | for (dlnp = dll_name; *dlnp; dlnp++) |
775cabad NC |
849 | if (*dlnp == '\\' || *dlnp == '/' || *dlnp == ':') |
850 | dll_name = dlnp + 1; | |
252b5132 RH |
851 | } |
852 | ||
853 | if (count_with_ordinals && max_ordinal > count_exported) | |
854 | { | |
855 | if (min_ordinal > max_ordinal - count_exported + 1) | |
856 | min_ordinal = max_ordinal - count_exported + 1; | |
857 | } | |
858 | else | |
859 | { | |
860 | min_ordinal = 1; | |
861 | max_ordinal = count_exported; | |
862 | } | |
252b5132 | 863 | |
775cabad | 864 | export_table_size = max_ordinal - min_ordinal + 1; |
1579bae1 | 865 | exported_symbols = xmalloc (export_table_size * sizeof (int)); |
252b5132 RH |
866 | for (i = 0; i < export_table_size; i++) |
867 | exported_symbols[i] = -1; | |
868 | ||
86b1cc60 | 869 | /* Now we need to assign ordinals to those that don't have them. */ |
252b5132 RH |
870 | for (i = 0; i < NE; i++) |
871 | { | |
a8d701fd DS |
872 | if (exported_symbol_sections[i] || |
873 | pe_def_file->exports[i].flag_forward) | |
252b5132 RH |
874 | { |
875 | if (pe_def_file->exports[i].ordinal != -1) | |
876 | { | |
877 | int ei = pe_def_file->exports[i].ordinal - min_ordinal; | |
878 | int pi = exported_symbols[ei]; | |
775cabad | 879 | |
252b5132 RH |
880 | if (pi != -1) |
881 | { | |
882 | /* xgettext:c-format */ | |
486e80e2 | 883 | einfo (_("%XError, ordinal used twice: %d (%s vs %s)\n"), |
252b5132 RH |
884 | pe_def_file->exports[i].ordinal, |
885 | pe_def_file->exports[i].name, | |
886 | pe_def_file->exports[pi].name); | |
887 | } | |
888 | exported_symbols[ei] = i; | |
889 | } | |
890 | name_table_size += strlen (pe_def_file->exports[i].name) + 1; | |
891 | } | |
a8d701fd DS |
892 | |
893 | /* Reserve space for the forward name. */ | |
894 | if (pe_def_file->exports[i].flag_forward) | |
895 | { | |
896 | name_table_size += strlen (pe_def_file->exports[i].internal_name) + 1; | |
897 | } | |
252b5132 RH |
898 | } |
899 | ||
900 | next_ordinal = min_ordinal; | |
901 | for (i = 0; i < NE; i++) | |
a8d701fd DS |
902 | if ((exported_symbol_sections[i] || |
903 | pe_def_file->exports[i].flag_forward) && | |
904 | pe_def_file->exports[i].ordinal == -1) | |
905 | { | |
906 | while (exported_symbols[next_ordinal - min_ordinal] != -1) | |
907 | next_ordinal++; | |
775cabad | 908 | |
a8d701fd DS |
909 | exported_symbols[next_ordinal - min_ordinal] = i; |
910 | pe_def_file->exports[i].ordinal = next_ordinal; | |
911 | } | |
252b5132 | 912 | |
86b1cc60 | 913 | /* OK, now we can allocate some memory. */ |
775cabad NC |
914 | edata_sz = (40 /* directory */ |
915 | + 4 * export_table_size /* addresses */ | |
252b5132 RH |
916 | + 4 * count_exported_byname /* name ptrs */ |
917 | + 2 * count_exported_byname /* ordinals */ | |
918 | + name_table_size + strlen (dll_name) + 1); | |
919 | } | |
920 | ||
8a5b676c DD |
921 | /* Fill the exported symbol offsets. The preliminary work has already |
922 | been done in process_def_file(). */ | |
923 | ||
924 | static void | |
1579bae1 | 925 | fill_exported_offsets (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
8a5b676c | 926 | { |
f0c87f88 | 927 | int i; |
8a5b676c | 928 | struct bfd_link_hash_entry *blhe; |
5cc18311 | 929 | |
8a5b676c DD |
930 | for (i = 0; i < pe_def_file->num_exports; i++) |
931 | { | |
1579bae1 | 932 | char *name; |
775cabad | 933 | |
1579bae1 | 934 | name = xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2); |
c9e38879 | 935 | if (pe_details->underscored |
1579bae1 | 936 | && *pe_def_file->exports[i].internal_name != '@') |
8a5b676c DD |
937 | { |
938 | *name = '_'; | |
939 | strcpy (name + 1, pe_def_file->exports[i].internal_name); | |
940 | } | |
941 | else | |
942 | strcpy (name, pe_def_file->exports[i].internal_name); | |
943 | ||
944 | blhe = bfd_link_hash_lookup (info->hash, | |
945 | name, | |
b34976b6 | 946 | FALSE, FALSE, TRUE); |
8a5b676c | 947 | |
1579bae1 | 948 | if (blhe && blhe->type == bfd_link_hash_defined) |
775cabad NC |
949 | exported_symbol_offsets[i] = blhe->u.def.value; |
950 | ||
8a5b676c DD |
951 | free (name); |
952 | } | |
953 | } | |
954 | ||
252b5132 | 955 | static void |
1579bae1 | 956 | fill_edata (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) |
252b5132 | 957 | { |
03a1c9a7 | 958 | int s, hint; |
252b5132 | 959 | unsigned char *edirectory; |
2f9636ba AM |
960 | unsigned char *eaddresses; |
961 | unsigned char *enameptrs; | |
962 | unsigned char *eordinals; | |
47639182 | 963 | char *enamestr; |
252b5132 RH |
964 | time_t now; |
965 | ||
966 | time (&now); | |
967 | ||
1579bae1 | 968 | edata_d = xmalloc (edata_sz); |
252b5132 | 969 | |
86b1cc60 | 970 | /* Note use of array pointer math here. */ |
252b5132 | 971 | edirectory = edata_d; |
2f9636ba AM |
972 | eaddresses = edata_d + 40; |
973 | enameptrs = eaddresses + 4 * export_table_size; | |
974 | eordinals = enameptrs + 4 * count_exported_byname; | |
47639182 | 975 | enamestr = (char *) eordinals + 2 * count_exported_byname; |
252b5132 | 976 | |
1579bae1 AM |
977 | #define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) \ |
978 | + edata_s->output_section->vma - image_base) | |
252b5132 | 979 | |
c2a94a7a | 980 | memset (edata_d, 0, edata_sz); |
252b5132 RH |
981 | bfd_put_32 (abfd, now, edata_d + 4); |
982 | if (pe_def_file->version_major != -1) | |
983 | { | |
984 | bfd_put_16 (abfd, pe_def_file->version_major, edata_d + 8); | |
985 | bfd_put_16 (abfd, pe_def_file->version_minor, edata_d + 10); | |
986 | } | |
775cabad | 987 | |
252b5132 RH |
988 | bfd_put_32 (abfd, ERVA (enamestr), edata_d + 12); |
989 | strcpy (enamestr, dll_name); | |
990 | enamestr += strlen (enamestr) + 1; | |
991 | bfd_put_32 (abfd, min_ordinal, edata_d + 16); | |
992 | bfd_put_32 (abfd, export_table_size, edata_d + 20); | |
993 | bfd_put_32 (abfd, count_exported_byname, edata_d + 24); | |
994 | bfd_put_32 (abfd, ERVA (eaddresses), edata_d + 28); | |
995 | bfd_put_32 (abfd, ERVA (enameptrs), edata_d + 32); | |
996 | bfd_put_32 (abfd, ERVA (eordinals), edata_d + 36); | |
997 | ||
8a5b676c DD |
998 | fill_exported_offsets (abfd, info); |
999 | ||
03a1c9a7 NC |
1000 | /* Ok, now for the filling in part. |
1001 | Scan alphabetically - ie the ordering in the exports[] table, | |
1002 | rather than by ordinal - the ordering in the exported_symbol[] | |
1003 | table. See dlltool.c and: | |
1004 | http://sources.redhat.com/ml/binutils/2003-04/msg00379.html | |
1579bae1 | 1005 | for more information. */ |
252b5132 | 1006 | hint = 0; |
03a1c9a7 | 1007 | for (s = 0; s < NE; s++) |
252b5132 | 1008 | { |
f5a95868 | 1009 | struct bfd_section *ssec = exported_symbol_sections[s]; |
a8d701fd DS |
1010 | if (pe_def_file->exports[s].ordinal != -1 && |
1011 | (pe_def_file->exports[s].flag_forward || ssec != NULL)) | |
252b5132 | 1012 | { |
45b1f63c | 1013 | int ord = pe_def_file->exports[s].ordinal; |
252b5132 | 1014 | |
a8d701fd DS |
1015 | if (pe_def_file->exports[s].flag_forward) |
1016 | { | |
1017 | bfd_put_32 (abfd, ERVA (enamestr), | |
1018 | eaddresses + 4 * (ord - min_ordinal)); | |
1019 | ||
1020 | strcpy (enamestr, pe_def_file->exports[s].internal_name); | |
1021 | enamestr += strlen (pe_def_file->exports[s].internal_name) + 1; | |
1022 | } | |
1023 | else | |
1024 | { | |
1025 | unsigned long srva = (exported_symbol_offsets[s] | |
1026 | + ssec->output_section->vma | |
1027 | + ssec->output_offset); | |
1028 | ||
1029 | bfd_put_32 (abfd, srva - image_base, | |
1030 | eaddresses + 4 * (ord - min_ordinal)); | |
1031 | } | |
775cabad | 1032 | |
252b5132 RH |
1033 | if (!pe_def_file->exports[s].flag_noname) |
1034 | { | |
1035 | char *ename = pe_def_file->exports[s].name; | |
03a1c9a7 | 1036 | |
2f9636ba AM |
1037 | bfd_put_32 (abfd, ERVA (enamestr), enameptrs); |
1038 | enameptrs += 4; | |
252b5132 RH |
1039 | strcpy (enamestr, ename); |
1040 | enamestr += strlen (enamestr) + 1; | |
2f9636ba AM |
1041 | bfd_put_16 (abfd, ord - min_ordinal, eordinals); |
1042 | eordinals += 2; | |
252b5132 RH |
1043 | pe_def_file->exports[s].hint = hint++; |
1044 | } | |
252b5132 RH |
1045 | } |
1046 | } | |
1047 | } | |
1048 | ||
b044cda1 | 1049 | |
198beae2 | 1050 | static struct bfd_section *current_sec; |
b044cda1 CW |
1051 | |
1052 | void | |
1579bae1 AM |
1053 | pe_walk_relocs_of_symbol (struct bfd_link_info *info, |
1054 | const char *name, | |
1055 | int (*cb) (arelent *, asection *)) | |
b044cda1 CW |
1056 | { |
1057 | bfd *b; | |
0d888aac | 1058 | asection *s; |
b044cda1 CW |
1059 | |
1060 | for (b = info->input_bfds; b; b = b->link_next) | |
1061 | { | |
775cabad NC |
1062 | asymbol **symbols; |
1063 | int nsyms, symsize; | |
1064 | ||
1065 | symsize = bfd_get_symtab_upper_bound (b); | |
1579bae1 | 1066 | symbols = xmalloc (symsize); |
775cabad | 1067 | nsyms = bfd_canonicalize_symtab (b, symbols); |
b044cda1 CW |
1068 | |
1069 | for (s = b->sections; s; s = s->next) | |
1070 | { | |
775cabad NC |
1071 | arelent **relocs; |
1072 | int relsize, nrelocs, i; | |
b044cda1 CW |
1073 | int flags = bfd_get_section_flags (b, s); |
1074 | ||
775cabad | 1075 | /* Skip discarded linkonce sections. */ |
b044cda1 CW |
1076 | if (flags & SEC_LINK_ONCE |
1077 | && s->output_section == bfd_abs_section_ptr) | |
1078 | continue; | |
1079 | ||
0d888aac | 1080 | current_sec = s; |
b044cda1 | 1081 | |
b044cda1 | 1082 | relsize = bfd_get_reloc_upper_bound (b, s); |
1579bae1 | 1083 | relocs = xmalloc (relsize); |
b044cda1 CW |
1084 | nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols); |
1085 | ||
1086 | for (i = 0; i < nrelocs; i++) | |
1087 | { | |
fc0a2244 | 1088 | struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr; |
775cabad NC |
1089 | |
1090 | if (!strcmp (name, sym->name)) | |
1091 | cb (relocs[i], s); | |
b044cda1 | 1092 | } |
775cabad | 1093 | |
b044cda1 | 1094 | free (relocs); |
775cabad | 1095 | |
b044cda1 CW |
1096 | /* Warning: the allocated symbols are remembered in BFD and reused |
1097 | later, so don't free them! */ | |
1098 | /* free (symbols); */ | |
1099 | } | |
1100 | } | |
1101 | } | |
1102 | ||
775cabad | 1103 | /* Gather all the relocations and build the .reloc section. */ |
252b5132 RH |
1104 | |
1105 | static void | |
1579bae1 | 1106 | generate_reloc (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
1107 | { |
1108 | ||
86b1cc60 | 1109 | /* For .reloc stuff. */ |
c6c37250 | 1110 | reloc_data_type *reloc_data; |
252b5132 RH |
1111 | int total_relocs = 0; |
1112 | int i; | |
1579bae1 | 1113 | unsigned long sec_page = (unsigned long) -1; |
252b5132 RH |
1114 | unsigned long page_ptr, page_count; |
1115 | int bi; | |
1116 | bfd *b; | |
198beae2 | 1117 | struct bfd_section *s; |
252b5132 RH |
1118 | |
1119 | total_relocs = 0; | |
1120 | for (b = info->input_bfds; b; b = b->link_next) | |
1121 | for (s = b->sections; s; s = s->next) | |
1122 | total_relocs += s->reloc_count; | |
1123 | ||
1579bae1 | 1124 | reloc_data = xmalloc (total_relocs * sizeof (reloc_data_type)); |
252b5132 RH |
1125 | |
1126 | total_relocs = 0; | |
1127 | bi = 0; | |
1128 | for (bi = 0, b = info->input_bfds; b; bi++, b = b->link_next) | |
1129 | { | |
1130 | arelent **relocs; | |
1131 | int relsize, nrelocs, i; | |
1132 | ||
1133 | for (s = b->sections; s; s = s->next) | |
1134 | { | |
1135 | unsigned long sec_vma = s->output_section->vma + s->output_offset; | |
1136 | asymbol **symbols; | |
1137 | int nsyms, symsize; | |
1138 | ||
86b1cc60 | 1139 | /* If it's not loaded, we don't need to relocate it this way. */ |
53baae48 | 1140 | #if 0 /* Some toolchains can generate .data sections without a SEC_LOAD flag but with relocs. */ |
252b5132 RH |
1141 | if (!(s->output_section->flags & SEC_LOAD)) |
1142 | continue; | |
53baae48 NC |
1143 | #endif |
1144 | /* Huh ? */ | |
1145 | if (strncmp (bfd_get_section_name (abfd, s), ".idata",6) == 0) | |
1146 | continue; | |
252b5132 RH |
1147 | |
1148 | /* I don't know why there would be a reloc for these, but I've | |
86b1cc60 | 1149 | seen it happen - DJ */ |
252b5132 RH |
1150 | if (s->output_section == &bfd_abs_section) |
1151 | continue; | |
1152 | ||
1153 | if (s->output_section->vma == 0) | |
1154 | { | |
86b1cc60 | 1155 | /* Huh? Shouldn't happen, but punt if it does. */ |
252b5132 RH |
1156 | einfo ("DJ: zero vma section reloc detected: `%s' #%d f=%d\n", |
1157 | s->output_section->name, s->output_section->index, | |
1158 | s->output_section->flags); | |
1159 | continue; | |
1160 | } | |
1161 | ||
1162 | symsize = bfd_get_symtab_upper_bound (b); | |
1579bae1 | 1163 | symbols = xmalloc (symsize); |
252b5132 RH |
1164 | nsyms = bfd_canonicalize_symtab (b, symbols); |
1165 | ||
1166 | relsize = bfd_get_reloc_upper_bound (b, s); | |
1579bae1 | 1167 | relocs = xmalloc (relsize); |
252b5132 RH |
1168 | nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols); |
1169 | ||
1170 | for (i = 0; i < nrelocs; i++) | |
1171 | { | |
b044cda1 | 1172 | if (pe_dll_extra_pe_debug) |
b7a26f91 | 1173 | { |
fc0a2244 | 1174 | struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr; |
b7a26f91 | 1175 | printf ("rel: %s\n", sym->name); |
b044cda1 | 1176 | } |
252b5132 | 1177 | if (!relocs[i]->howto->pc_relative |
c6c37250 | 1178 | && relocs[i]->howto->type != pe_details->imagebase_reloc) |
252b5132 | 1179 | { |
c6c37250 | 1180 | bfd_vma sym_vma; |
fc0a2244 | 1181 | struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr; |
775cabad | 1182 | |
c6c37250 DD |
1183 | sym_vma = (relocs[i]->addend |
1184 | + sym->value | |
1185 | + sym->section->vma | |
1186 | + sym->section->output_offset | |
1187 | + sym->section->output_section->vma); | |
1188 | reloc_data[total_relocs].vma = sec_vma + relocs[i]->address; | |
5cc18311 | 1189 | |
344a211f | 1190 | #define BITS_AND_SHIFT(bits, shift) (bits * 1000 | shift) |
5cc18311 | 1191 | |
344a211f NC |
1192 | switch BITS_AND_SHIFT (relocs[i]->howto->bitsize, |
1193 | relocs[i]->howto->rightshift) | |
252b5132 | 1194 | { |
344a211f | 1195 | case BITS_AND_SHIFT (32, 0): |
c6c37250 DD |
1196 | reloc_data[total_relocs].type = 3; |
1197 | total_relocs++; | |
252b5132 | 1198 | break; |
344a211f NC |
1199 | case BITS_AND_SHIFT (16, 0): |
1200 | reloc_data[total_relocs].type = 2; | |
1201 | total_relocs++; | |
1202 | break; | |
1203 | case BITS_AND_SHIFT (16, 16): | |
1204 | reloc_data[total_relocs].type = 4; | |
86b1cc60 KH |
1205 | /* FIXME: we can't know the symbol's right value |
1206 | yet, but we probably can safely assume that | |
1207 | CE will relocate us in 64k blocks, so leaving | |
1208 | it zero is safe. */ | |
344a211f NC |
1209 | reloc_data[total_relocs].extra = 0; |
1210 | total_relocs++; | |
1211 | break; | |
1212 | case BITS_AND_SHIFT (26, 2): | |
1213 | reloc_data[total_relocs].type = 5; | |
1214 | total_relocs++; | |
1215 | break; | |
fea39bcb | 1216 | case BITS_AND_SHIFT (24, 2): |
d3793eaa NC |
1217 | /* FIXME: 0 is ARM_26D, it is defined in bfd/coff-arm.c |
1218 | Those ARM_xxx definitions should go in proper | |
1219 | header someday. */ | |
1220 | if (relocs[i]->howto->type == 0 | |
1221 | /* Older GNU linkers used 5 instead of 0 for this reloc. */ | |
1222 | || relocs[i]->howto->type == 5) | |
fea39bcb NC |
1223 | /* This is an ARM_26D reloc, which is an ARM_26 reloc |
1224 | that has already been fully processed during a | |
1225 | previous link stage, so ignore it here. */ | |
1226 | break; | |
1227 | /* Fall through. */ | |
252b5132 RH |
1228 | default: |
1229 | /* xgettext:c-format */ | |
1230 | einfo (_("%XError: %d-bit reloc in dll\n"), | |
1231 | relocs[i]->howto->bitsize); | |
1232 | break; | |
1233 | } | |
1234 | } | |
1235 | } | |
1236 | free (relocs); | |
86b1cc60 KH |
1237 | /* Warning: the allocated symbols are remembered in BFD and |
1238 | reused later, so don't free them! */ | |
252b5132 RH |
1239 | } |
1240 | } | |
1241 | ||
1242 | /* At this point, we have total_relocs relocation addresses in | |
1243 | reloc_addresses, which are all suitable for the .reloc section. | |
5cc18311 | 1244 | We must now create the new sections. */ |
c6c37250 | 1245 | qsort (reloc_data, total_relocs, sizeof (*reloc_data), reloc_sort); |
252b5132 RH |
1246 | |
1247 | for (i = 0; i < total_relocs; i++) | |
1248 | { | |
c6c37250 | 1249 | unsigned long this_page = (reloc_data[i].vma >> 12); |
5cc18311 | 1250 | |
252b5132 RH |
1251 | if (this_page != sec_page) |
1252 | { | |
775cabad | 1253 | reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align. */ |
252b5132 RH |
1254 | reloc_sz += 8; |
1255 | sec_page = this_page; | |
1256 | } | |
5cc18311 | 1257 | |
252b5132 | 1258 | reloc_sz += 2; |
5cc18311 | 1259 | |
344a211f NC |
1260 | if (reloc_data[i].type == 4) |
1261 | reloc_sz += 2; | |
252b5132 | 1262 | } |
b7a26f91 | 1263 | |
775cabad | 1264 | reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align. */ |
1579bae1 AM |
1265 | reloc_d = xmalloc (reloc_sz); |
1266 | sec_page = (unsigned long) -1; | |
252b5132 | 1267 | reloc_sz = 0; |
1579bae1 | 1268 | page_ptr = (unsigned long) -1; |
252b5132 | 1269 | page_count = 0; |
775cabad | 1270 | |
252b5132 RH |
1271 | for (i = 0; i < total_relocs; i++) |
1272 | { | |
c6c37250 | 1273 | unsigned long rva = reloc_data[i].vma - image_base; |
252b5132 | 1274 | unsigned long this_page = (rva & ~0xfff); |
775cabad | 1275 | |
252b5132 RH |
1276 | if (this_page != sec_page) |
1277 | { | |
1278 | while (reloc_sz & 3) | |
1279 | reloc_d[reloc_sz++] = 0; | |
775cabad | 1280 | |
1579bae1 | 1281 | if (page_ptr != (unsigned long) -1) |
252b5132 | 1282 | bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4); |
775cabad | 1283 | |
252b5132 RH |
1284 | bfd_put_32 (abfd, this_page, reloc_d + reloc_sz); |
1285 | page_ptr = reloc_sz; | |
1286 | reloc_sz += 8; | |
1287 | sec_page = this_page; | |
1288 | page_count = 0; | |
1289 | } | |
775cabad | 1290 | |
d643799d | 1291 | bfd_put_16 (abfd, (rva & 0xfff) + (reloc_data[i].type << 12), |
c6c37250 | 1292 | reloc_d + reloc_sz); |
252b5132 | 1293 | reloc_sz += 2; |
775cabad | 1294 | |
c6c37250 DD |
1295 | if (reloc_data[i].type == 4) |
1296 | { | |
1297 | bfd_put_16 (abfd, reloc_data[i].extra, reloc_d + reloc_sz); | |
1298 | reloc_sz += 2; | |
1299 | } | |
775cabad | 1300 | |
252b5132 RH |
1301 | page_count++; |
1302 | } | |
775cabad | 1303 | |
252b5132 RH |
1304 | while (reloc_sz & 3) |
1305 | reloc_d[reloc_sz++] = 0; | |
775cabad | 1306 | |
1579bae1 | 1307 | if (page_ptr != (unsigned long) -1) |
252b5132 | 1308 | bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4); |
775cabad | 1309 | |
eea6121a | 1310 | while (reloc_sz < reloc_s->size) |
252b5132 RH |
1311 | reloc_d[reloc_sz++] = 0; |
1312 | } | |
1313 | ||
775cabad NC |
1314 | /* Given the exiting def_file structure, print out a .DEF file that |
1315 | corresponds to it. */ | |
252b5132 RH |
1316 | |
1317 | static void | |
1579bae1 | 1318 | quoteput (char *s, FILE *f, int needs_quotes) |
252b5132 RH |
1319 | { |
1320 | char *cp; | |
775cabad | 1321 | |
252b5132 RH |
1322 | for (cp = s; *cp; cp++) |
1323 | if (*cp == '\'' | |
1324 | || *cp == '"' | |
1325 | || *cp == '\\' | |
3882b010 | 1326 | || ISSPACE (*cp) |
252b5132 RH |
1327 | || *cp == ',' |
1328 | || *cp == ';') | |
1329 | needs_quotes = 1; | |
775cabad | 1330 | |
252b5132 RH |
1331 | if (needs_quotes) |
1332 | { | |
1333 | putc ('"', f); | |
775cabad | 1334 | |
252b5132 RH |
1335 | while (*s) |
1336 | { | |
1337 | if (*s == '"' || *s == '\\') | |
1338 | putc ('\\', f); | |
775cabad | 1339 | |
252b5132 RH |
1340 | putc (*s, f); |
1341 | s++; | |
1342 | } | |
775cabad | 1343 | |
252b5132 RH |
1344 | putc ('"', f); |
1345 | } | |
1346 | else | |
1347 | fputs (s, f); | |
1348 | } | |
1349 | ||
1350 | void | |
1579bae1 | 1351 | pe_dll_generate_def_file (const char *pe_out_def_filename) |
252b5132 RH |
1352 | { |
1353 | int i; | |
1354 | FILE *out = fopen (pe_out_def_filename, "w"); | |
775cabad | 1355 | |
252b5132 | 1356 | if (out == NULL) |
775cabad NC |
1357 | /* xgettext:c-format */ |
1358 | einfo (_("%s: Can't open output def file %s\n"), | |
1359 | program_name, pe_out_def_filename); | |
252b5132 RH |
1360 | |
1361 | if (pe_def_file) | |
1362 | { | |
1363 | if (pe_def_file->name) | |
1364 | { | |
1365 | if (pe_def_file->is_dll) | |
1366 | fprintf (out, "LIBRARY "); | |
1367 | else | |
1368 | fprintf (out, "NAME "); | |
775cabad | 1369 | |
252b5132 | 1370 | quoteput (pe_def_file->name, out, 1); |
775cabad | 1371 | |
252b5132 RH |
1372 | if (pe_data (output_bfd)->pe_opthdr.ImageBase) |
1373 | fprintf (out, " BASE=0x%lx", | |
1374 | (unsigned long) pe_data (output_bfd)->pe_opthdr.ImageBase); | |
1375 | fprintf (out, "\n"); | |
1376 | } | |
1377 | ||
1378 | if (pe_def_file->description) | |
1379 | { | |
1380 | fprintf (out, "DESCRIPTION "); | |
1381 | quoteput (pe_def_file->description, out, 1); | |
1382 | fprintf (out, "\n"); | |
1383 | } | |
1384 | ||
1385 | if (pe_def_file->version_minor != -1) | |
1386 | fprintf (out, "VERSION %d.%d\n", pe_def_file->version_major, | |
1387 | pe_def_file->version_minor); | |
1388 | else if (pe_def_file->version_major != -1) | |
1389 | fprintf (out, "VERSION %d\n", pe_def_file->version_major); | |
1390 | ||
1391 | if (pe_def_file->stack_reserve != -1 || pe_def_file->heap_reserve != -1) | |
1392 | fprintf (out, "\n"); | |
1393 | ||
1394 | if (pe_def_file->stack_commit != -1) | |
1395 | fprintf (out, "STACKSIZE 0x%x,0x%x\n", | |
1396 | pe_def_file->stack_reserve, pe_def_file->stack_commit); | |
1397 | else if (pe_def_file->stack_reserve != -1) | |
1398 | fprintf (out, "STACKSIZE 0x%x\n", pe_def_file->stack_reserve); | |
775cabad | 1399 | |
252b5132 RH |
1400 | if (pe_def_file->heap_commit != -1) |
1401 | fprintf (out, "HEAPSIZE 0x%x,0x%x\n", | |
1402 | pe_def_file->heap_reserve, pe_def_file->heap_commit); | |
1403 | else if (pe_def_file->heap_reserve != -1) | |
1404 | fprintf (out, "HEAPSIZE 0x%x\n", pe_def_file->heap_reserve); | |
1405 | ||
1406 | if (pe_def_file->num_section_defs > 0) | |
1407 | { | |
1408 | fprintf (out, "\nSECTIONS\n\n"); | |
775cabad | 1409 | |
252b5132 RH |
1410 | for (i = 0; i < pe_def_file->num_section_defs; i++) |
1411 | { | |
1412 | fprintf (out, " "); | |
1413 | quoteput (pe_def_file->section_defs[i].name, out, 0); | |
775cabad | 1414 | |
252b5132 RH |
1415 | if (pe_def_file->section_defs[i].class) |
1416 | { | |
1417 | fprintf (out, " CLASS "); | |
1418 | quoteput (pe_def_file->section_defs[i].class, out, 0); | |
1419 | } | |
775cabad | 1420 | |
252b5132 RH |
1421 | if (pe_def_file->section_defs[i].flag_read) |
1422 | fprintf (out, " READ"); | |
775cabad | 1423 | |
252b5132 RH |
1424 | if (pe_def_file->section_defs[i].flag_write) |
1425 | fprintf (out, " WRITE"); | |
775cabad | 1426 | |
252b5132 RH |
1427 | if (pe_def_file->section_defs[i].flag_execute) |
1428 | fprintf (out, " EXECUTE"); | |
775cabad | 1429 | |
252b5132 RH |
1430 | if (pe_def_file->section_defs[i].flag_shared) |
1431 | fprintf (out, " SHARED"); | |
775cabad | 1432 | |
252b5132 RH |
1433 | fprintf (out, "\n"); |
1434 | } | |
1435 | } | |
1436 | ||
1437 | if (pe_def_file->num_exports > 0) | |
1438 | { | |
b044cda1 | 1439 | fprintf (out, "EXPORTS\n"); |
775cabad | 1440 | |
252b5132 RH |
1441 | for (i = 0; i < pe_def_file->num_exports; i++) |
1442 | { | |
1443 | def_file_export *e = pe_def_file->exports + i; | |
1444 | fprintf (out, " "); | |
1445 | quoteput (e->name, out, 0); | |
775cabad | 1446 | |
252b5132 RH |
1447 | if (e->internal_name && strcmp (e->internal_name, e->name)) |
1448 | { | |
1449 | fprintf (out, " = "); | |
1450 | quoteput (e->internal_name, out, 0); | |
1451 | } | |
775cabad | 1452 | |
252b5132 RH |
1453 | if (e->ordinal != -1) |
1454 | fprintf (out, " @%d", e->ordinal); | |
775cabad | 1455 | |
252b5132 RH |
1456 | if (e->flag_private) |
1457 | fprintf (out, " PRIVATE"); | |
775cabad | 1458 | |
252b5132 RH |
1459 | if (e->flag_constant) |
1460 | fprintf (out, " CONSTANT"); | |
775cabad | 1461 | |
252b5132 RH |
1462 | if (e->flag_noname) |
1463 | fprintf (out, " NONAME"); | |
775cabad | 1464 | |
252b5132 RH |
1465 | if (e->flag_data) |
1466 | fprintf (out, " DATA"); | |
1467 | ||
1468 | fprintf (out, "\n"); | |
1469 | } | |
1470 | } | |
1471 | ||
1472 | if (pe_def_file->num_imports > 0) | |
1473 | { | |
1474 | fprintf (out, "\nIMPORTS\n\n"); | |
775cabad | 1475 | |
252b5132 RH |
1476 | for (i = 0; i < pe_def_file->num_imports; i++) |
1477 | { | |
1478 | def_file_import *im = pe_def_file->imports + i; | |
1479 | fprintf (out, " "); | |
775cabad | 1480 | |
252b5132 RH |
1481 | if (im->internal_name |
1482 | && (!im->name || strcmp (im->internal_name, im->name))) | |
1483 | { | |
1484 | quoteput (im->internal_name, out, 0); | |
1485 | fprintf (out, " = "); | |
1486 | } | |
775cabad | 1487 | |
252b5132 RH |
1488 | quoteput (im->module->name, out, 0); |
1489 | fprintf (out, "."); | |
775cabad | 1490 | |
252b5132 RH |
1491 | if (im->name) |
1492 | quoteput (im->name, out, 0); | |
1493 | else | |
1494 | fprintf (out, "%d", im->ordinal); | |
775cabad | 1495 | |
252b5132 RH |
1496 | fprintf (out, "\n"); |
1497 | } | |
1498 | } | |
1499 | } | |
1500 | else | |
1501 | fprintf (out, _("; no contents available\n")); | |
1502 | ||
1503 | if (fclose (out) == EOF) | |
775cabad NC |
1504 | /* xgettext:c-format */ |
1505 | einfo (_("%P: Error closing file `%s'\n"), pe_out_def_filename); | |
252b5132 RH |
1506 | } |
1507 | ||
775cabad | 1508 | /* Generate the import library. */ |
252b5132 RH |
1509 | |
1510 | static asymbol **symtab; | |
1511 | static int symptr; | |
1512 | static int tmp_seq; | |
1513 | static const char *dll_filename; | |
1514 | static char *dll_symname; | |
1515 | ||
1516 | #define UNDSEC (asection *) &bfd_und_section | |
1517 | ||
1518 | static asection * | |
1579bae1 | 1519 | quick_section (bfd *abfd, const char *name, int flags, int align) |
252b5132 RH |
1520 | { |
1521 | asection *sec; | |
1522 | asymbol *sym; | |
1523 | ||
1524 | sec = bfd_make_section_old_way (abfd, name); | |
86b1cc60 | 1525 | bfd_set_section_flags (abfd, sec, flags | SEC_ALLOC | SEC_LOAD | SEC_KEEP); |
252b5132 | 1526 | bfd_set_section_alignment (abfd, sec, align); |
86b1cc60 | 1527 | /* Remember to undo this before trying to link internally! */ |
252b5132 RH |
1528 | sec->output_section = sec; |
1529 | ||
1530 | sym = bfd_make_empty_symbol (abfd); | |
1531 | symtab[symptr++] = sym; | |
1532 | sym->name = sec->name; | |
1533 | sym->section = sec; | |
1534 | sym->flags = BSF_LOCAL; | |
1535 | sym->value = 0; | |
1536 | ||
1537 | return sec; | |
1538 | } | |
1539 | ||
1540 | static void | |
1579bae1 AM |
1541 | quick_symbol (bfd *abfd, |
1542 | const char *n1, | |
1543 | const char *n2, | |
1544 | const char *n3, | |
1545 | asection *sec, | |
1546 | int flags, | |
1547 | int addr) | |
252b5132 RH |
1548 | { |
1549 | asymbol *sym; | |
1579bae1 | 1550 | char *name = xmalloc (strlen (n1) + strlen (n2) + strlen (n3) + 1); |
775cabad | 1551 | |
252b5132 RH |
1552 | strcpy (name, n1); |
1553 | strcat (name, n2); | |
1554 | strcat (name, n3); | |
1555 | sym = bfd_make_empty_symbol (abfd); | |
1556 | sym->name = name; | |
1557 | sym->section = sec; | |
1558 | sym->flags = flags; | |
1559 | sym->value = addr; | |
1560 | symtab[symptr++] = sym; | |
1561 | } | |
1562 | ||
1563 | static arelent *reltab = 0; | |
1564 | static int relcount = 0, relsize = 0; | |
1565 | ||
1566 | static void | |
1579bae1 | 1567 | quick_reloc (bfd *abfd, int address, int which_howto, int symidx) |
252b5132 | 1568 | { |
1579bae1 | 1569 | if (relcount >= relsize - 1) |
252b5132 RH |
1570 | { |
1571 | relsize += 10; | |
1572 | if (reltab) | |
1579bae1 | 1573 | reltab = xrealloc (reltab, relsize * sizeof (arelent)); |
252b5132 | 1574 | else |
1579bae1 | 1575 | reltab = xmalloc (relsize * sizeof (arelent)); |
252b5132 RH |
1576 | } |
1577 | reltab[relcount].address = address; | |
1578 | reltab[relcount].addend = 0; | |
1579 | reltab[relcount].howto = bfd_reloc_type_lookup (abfd, which_howto); | |
1580 | reltab[relcount].sym_ptr_ptr = symtab + symidx; | |
1581 | relcount++; | |
1582 | } | |
1583 | ||
1584 | static void | |
1585 | save_relocs (asection *sec) | |
1586 | { | |
1587 | int i; | |
775cabad | 1588 | |
252b5132 RH |
1589 | sec->relocation = reltab; |
1590 | sec->reloc_count = relcount; | |
1579bae1 | 1591 | sec->orelocation = xmalloc ((relcount + 1) * sizeof (arelent *)); |
d643799d | 1592 | for (i = 0; i < relcount; i++) |
252b5132 RH |
1593 | sec->orelocation[i] = sec->relocation + i; |
1594 | sec->orelocation[relcount] = 0; | |
1595 | sec->flags |= SEC_RELOC; | |
1596 | reltab = 0; | |
1597 | relcount = relsize = 0; | |
1598 | } | |
1599 | ||
775cabad NC |
1600 | /* .section .idata$2 |
1601 | .global __head_my_dll | |
1602 | __head_my_dll: | |
1603 | .rva hname | |
1604 | .long 0 | |
1605 | .long 0 | |
1606 | .rva __my_dll_iname | |
1607 | .rva fthunk | |
b7a26f91 | 1608 | |
775cabad NC |
1609 | .section .idata$5 |
1610 | .long 0 | |
1611 | fthunk: | |
b7a26f91 | 1612 | |
775cabad NC |
1613 | .section .idata$4 |
1614 | .long 0 | |
1615 | hname: */ | |
252b5132 RH |
1616 | |
1617 | static bfd * | |
1579bae1 | 1618 | make_head (bfd *parent) |
252b5132 RH |
1619 | { |
1620 | asection *id2, *id5, *id4; | |
1621 | unsigned char *d2, *d5, *d4; | |
1622 | char *oname; | |
1623 | bfd *abfd; | |
1624 | ||
1579bae1 | 1625 | oname = xmalloc (20); |
252b5132 RH |
1626 | sprintf (oname, "d%06d.o", tmp_seq); |
1627 | tmp_seq++; | |
1628 | ||
1629 | abfd = bfd_create (oname, parent); | |
c6c37250 | 1630 | bfd_find_target (pe_details->object_target, abfd); |
252b5132 RH |
1631 | bfd_make_writable (abfd); |
1632 | ||
1633 | bfd_set_format (abfd, bfd_object); | |
c6c37250 | 1634 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); |
252b5132 RH |
1635 | |
1636 | symptr = 0; | |
1579bae1 | 1637 | symtab = xmalloc (6 * sizeof (asymbol *)); |
252b5132 RH |
1638 | id2 = quick_section (abfd, ".idata$2", SEC_HAS_CONTENTS, 2); |
1639 | id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2); | |
1640 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); | |
d643799d KH |
1641 | quick_symbol (abfd, U ("_head_"), dll_symname, "", id2, BSF_GLOBAL, 0); |
1642 | quick_symbol (abfd, U (""), dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0); | |
c6c37250 DD |
1643 | |
1644 | /* OK, pay attention here. I got confused myself looking back at | |
1645 | it. We create a four-byte section to mark the beginning of the | |
1646 | list, and we include an offset of 4 in the section, so that the | |
1647 | pointer to the list points to the *end* of this section, which is | |
5cc18311 | 1648 | the start of the list of sections from other objects. */ |
252b5132 RH |
1649 | |
1650 | bfd_set_section_size (abfd, id2, 20); | |
1579bae1 | 1651 | d2 = xmalloc (20); |
252b5132 RH |
1652 | id2->contents = d2; |
1653 | memset (d2, 0, 20); | |
775cabad | 1654 | d2[0] = d2[16] = 4; /* Reloc addend. */ |
252b5132 RH |
1655 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 2); |
1656 | quick_reloc (abfd, 12, BFD_RELOC_RVA, 4); | |
1657 | quick_reloc (abfd, 16, BFD_RELOC_RVA, 1); | |
1658 | save_relocs (id2); | |
1659 | ||
1660 | bfd_set_section_size (abfd, id5, 4); | |
1579bae1 | 1661 | d5 = xmalloc (4); |
252b5132 RH |
1662 | id5->contents = d5; |
1663 | memset (d5, 0, 4); | |
1664 | ||
1665 | bfd_set_section_size (abfd, id4, 4); | |
1579bae1 | 1666 | d4 = xmalloc (4); |
252b5132 RH |
1667 | id4->contents = d4; |
1668 | memset (d4, 0, 4); | |
1669 | ||
1670 | bfd_set_symtab (abfd, symtab, symptr); | |
1671 | ||
1672 | bfd_set_section_contents (abfd, id2, d2, 0, 20); | |
1673 | bfd_set_section_contents (abfd, id5, d5, 0, 4); | |
1674 | bfd_set_section_contents (abfd, id4, d4, 0, 4); | |
5cc18311 | 1675 | |
252b5132 RH |
1676 | bfd_make_readable (abfd); |
1677 | return abfd; | |
1678 | } | |
1679 | ||
775cabad NC |
1680 | /* .section .idata$4 |
1681 | .long 0 | |
1682 | .section .idata$5 | |
1683 | .long 0 | |
1684 | .section idata$7 | |
1685 | .global __my_dll_iname | |
1686 | __my_dll_iname: | |
1687 | .asciz "my.dll" */ | |
252b5132 RH |
1688 | |
1689 | static bfd * | |
1579bae1 | 1690 | make_tail (bfd *parent) |
252b5132 RH |
1691 | { |
1692 | asection *id4, *id5, *id7; | |
1693 | unsigned char *d4, *d5, *d7; | |
1694 | int len; | |
1695 | char *oname; | |
1696 | bfd *abfd; | |
1697 | ||
1579bae1 | 1698 | oname = xmalloc (20); |
252b5132 RH |
1699 | sprintf (oname, "d%06d.o", tmp_seq); |
1700 | tmp_seq++; | |
1701 | ||
1702 | abfd = bfd_create (oname, parent); | |
c6c37250 | 1703 | bfd_find_target (pe_details->object_target, abfd); |
252b5132 RH |
1704 | bfd_make_writable (abfd); |
1705 | ||
1706 | bfd_set_format (abfd, bfd_object); | |
c6c37250 | 1707 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); |
252b5132 RH |
1708 | |
1709 | symptr = 0; | |
1579bae1 | 1710 | symtab = xmalloc (5 * sizeof (asymbol *)); |
252b5132 RH |
1711 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); |
1712 | id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2); | |
1713 | id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2); | |
d643799d | 1714 | quick_symbol (abfd, U (""), dll_symname, "_iname", id7, BSF_GLOBAL, 0); |
252b5132 RH |
1715 | |
1716 | bfd_set_section_size (abfd, id4, 4); | |
1579bae1 | 1717 | d4 = xmalloc (4); |
252b5132 RH |
1718 | id4->contents = d4; |
1719 | memset (d4, 0, 4); | |
1720 | ||
1721 | bfd_set_section_size (abfd, id5, 4); | |
1579bae1 | 1722 | d5 = xmalloc (4); |
252b5132 RH |
1723 | id5->contents = d5; |
1724 | memset (d5, 0, 4); | |
1725 | ||
d643799d | 1726 | len = strlen (dll_filename) + 1; |
252b5132 | 1727 | if (len & 1) |
d643799d | 1728 | len++; |
252b5132 | 1729 | bfd_set_section_size (abfd, id7, len); |
1579bae1 | 1730 | d7 = xmalloc (len); |
252b5132 | 1731 | id7->contents = d7; |
47639182 | 1732 | strcpy ((char *) d7, dll_filename); |
252b5132 RH |
1733 | |
1734 | bfd_set_symtab (abfd, symtab, symptr); | |
1735 | ||
1736 | bfd_set_section_contents (abfd, id4, d4, 0, 4); | |
1737 | bfd_set_section_contents (abfd, id5, d5, 0, 4); | |
1738 | bfd_set_section_contents (abfd, id7, d7, 0, len); | |
1739 | ||
1740 | bfd_make_readable (abfd); | |
1741 | return abfd; | |
1742 | } | |
1743 | ||
775cabad NC |
1744 | /* .text |
1745 | .global _function | |
1746 | .global ___imp_function | |
1747 | .global __imp__function | |
1748 | _function: | |
1749 | jmp *__imp__function: | |
b7a26f91 | 1750 | |
775cabad NC |
1751 | .section idata$7 |
1752 | .long __head_my_dll | |
b7a26f91 | 1753 | |
775cabad NC |
1754 | .section .idata$5 |
1755 | ___imp_function: | |
1756 | __imp__function: | |
1757 | iat? | |
1758 | .section .idata$4 | |
1759 | iat? | |
1760 | .section .idata$6 | |
1761 | ID<ordinal>: | |
1762 | .short <hint> | |
1763 | .asciz "function" xlate? (add underscore, kill at) */ | |
1764 | ||
1765 | static unsigned char jmp_ix86_bytes[] = | |
1766 | { | |
252b5132 RH |
1767 | 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 |
1768 | }; | |
1769 | ||
775cabad NC |
1770 | /* _function: |
1771 | mov.l ip+8,r0 | |
1772 | mov.l @r0,r0 | |
1773 | jmp @r0 | |
1774 | nop | |
1775 | .dw __imp_function */ | |
344a211f | 1776 | |
775cabad NC |
1777 | static unsigned char jmp_sh_bytes[] = |
1778 | { | |
344a211f NC |
1779 | 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 |
1780 | }; | |
1781 | ||
775cabad NC |
1782 | /* _function: |
1783 | lui $t0,<high:__imp_function> | |
1784 | lw $t0,<low:__imp_function> | |
1785 | jr $t0 | |
1786 | nop */ | |
344a211f | 1787 | |
775cabad NC |
1788 | static unsigned char jmp_mips_bytes[] = |
1789 | { | |
344a211f NC |
1790 | 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d, |
1791 | 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 | |
1792 | }; | |
252b5132 | 1793 | |
53baae48 NC |
1794 | static unsigned char jmp_arm_bytes[] = |
1795 | { | |
1796 | 0x00, 0xc0, 0x9f, 0xe5, /* ldr ip, [pc] */ | |
1797 | 0x00, 0xf0, 0x9c, 0xe5, /* ldr pc, [ip] */ | |
1798 | 0, 0, 0, 0 | |
1799 | }; | |
1800 | ||
1801 | ||
252b5132 | 1802 | static bfd * |
1579bae1 | 1803 | make_one (def_file_export *exp, bfd *parent) |
252b5132 RH |
1804 | { |
1805 | asection *tx, *id7, *id5, *id4, *id6; | |
23a87948 | 1806 | unsigned char *td = NULL, *d7, *d5, *d4, *d6 = NULL; |
252b5132 RH |
1807 | int len; |
1808 | char *oname; | |
1809 | bfd *abfd; | |
f0c87f88 NC |
1810 | unsigned char *jmp_bytes = NULL; |
1811 | int jmp_byte_count = 0; | |
c6c37250 DD |
1812 | |
1813 | switch (pe_details->pe_arch) | |
1814 | { | |
1815 | case PE_ARCH_i386: | |
1816 | jmp_bytes = jmp_ix86_bytes; | |
1817 | jmp_byte_count = sizeof (jmp_ix86_bytes); | |
1818 | break; | |
344a211f NC |
1819 | case PE_ARCH_sh: |
1820 | jmp_bytes = jmp_sh_bytes; | |
1821 | jmp_byte_count = sizeof (jmp_sh_bytes); | |
1822 | break; | |
1823 | case PE_ARCH_mips: | |
1824 | jmp_bytes = jmp_mips_bytes; | |
1825 | jmp_byte_count = sizeof (jmp_mips_bytes); | |
1826 | break; | |
53baae48 NC |
1827 | case PE_ARCH_arm: |
1828 | jmp_bytes = jmp_arm_bytes; | |
1829 | jmp_byte_count = sizeof (jmp_arm_bytes); | |
1830 | break; | |
775cabad NC |
1831 | default: |
1832 | abort (); | |
c6c37250 | 1833 | } |
252b5132 | 1834 | |
1579bae1 | 1835 | oname = xmalloc (20); |
252b5132 RH |
1836 | sprintf (oname, "d%06d.o", tmp_seq); |
1837 | tmp_seq++; | |
1838 | ||
1839 | abfd = bfd_create (oname, parent); | |
c6c37250 | 1840 | bfd_find_target (pe_details->object_target, abfd); |
252b5132 RH |
1841 | bfd_make_writable (abfd); |
1842 | ||
1843 | bfd_set_format (abfd, bfd_object); | |
c6c37250 | 1844 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); |
252b5132 RH |
1845 | |
1846 | symptr = 0; | |
1579bae1 | 1847 | symtab = xmalloc (11 * sizeof (asymbol *)); |
252b5132 RH |
1848 | tx = quick_section (abfd, ".text", SEC_CODE|SEC_HAS_CONTENTS, 2); |
1849 | id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2); | |
1850 | id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2); | |
1851 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); | |
1852 | id6 = quick_section (abfd, ".idata$6", SEC_HAS_CONTENTS, 2); | |
b34976b6 | 1853 | |
c9e38879 NC |
1854 | if (*exp->internal_name == '@') |
1855 | { | |
1579bae1 AM |
1856 | quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC, |
1857 | BSF_GLOBAL, 0); | |
4b7f0676 NC |
1858 | if (! exp->flag_data) |
1859 | quick_symbol (abfd, "", exp->internal_name, "", tx, BSF_GLOBAL, 0); | |
1579bae1 AM |
1860 | quick_symbol (abfd, U ("_imp_"), exp->internal_name, "", id5, |
1861 | BSF_GLOBAL, 0); | |
c9e38879 NC |
1862 | /* Fastcall applies only to functions, |
1863 | so no need for auto-import symbol. */ | |
1864 | } | |
1865 | else | |
1866 | { | |
4b7f0676 NC |
1867 | quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC, |
1868 | BSF_GLOBAL, 0); | |
c9e38879 | 1869 | if (! exp->flag_data) |
1579bae1 AM |
1870 | quick_symbol (abfd, U (""), exp->internal_name, "", tx, |
1871 | BSF_GLOBAL, 0); | |
1579bae1 AM |
1872 | quick_symbol (abfd, U ("_imp__"), exp->internal_name, "", id5, |
1873 | BSF_GLOBAL, 0); | |
c9e38879 | 1874 | /* Symbol to reference ord/name of imported |
1579bae1 | 1875 | data symbol, used to implement auto-import. */ |
c9e38879 | 1876 | if (exp->flag_data) |
1579bae1 AM |
1877 | quick_symbol (abfd, U("_nm__"), exp->internal_name, "", id6, |
1878 | BSF_GLOBAL,0); | |
c9e38879 | 1879 | } |
870df5dc | 1880 | if (pe_dll_compat_implib) |
1579bae1 AM |
1881 | quick_symbol (abfd, U ("__imp_"), exp->internal_name, "", id5, |
1882 | BSF_GLOBAL, 0); | |
252b5132 | 1883 | |
23a87948 | 1884 | if (! exp->flag_data) |
775cabad NC |
1885 | { |
1886 | bfd_set_section_size (abfd, tx, jmp_byte_count); | |
1579bae1 | 1887 | td = xmalloc (jmp_byte_count); |
775cabad NC |
1888 | tx->contents = td; |
1889 | memcpy (td, jmp_bytes, jmp_byte_count); | |
1890 | ||
1891 | switch (pe_details->pe_arch) | |
1892 | { | |
1893 | case PE_ARCH_i386: | |
1894 | quick_reloc (abfd, 2, BFD_RELOC_32, 2); | |
1895 | break; | |
1896 | case PE_ARCH_sh: | |
1897 | quick_reloc (abfd, 8, BFD_RELOC_32, 2); | |
1898 | break; | |
1899 | case PE_ARCH_mips: | |
1900 | quick_reloc (abfd, 0, BFD_RELOC_HI16_S, 2); | |
1901 | quick_reloc (abfd, 0, BFD_RELOC_LO16, 0); /* MIPS_R_PAIR */ | |
1902 | quick_reloc (abfd, 4, BFD_RELOC_LO16, 2); | |
1903 | break; | |
53baae48 NC |
1904 | case PE_ARCH_arm: |
1905 | quick_reloc (abfd, 8, BFD_RELOC_32, 2); | |
1906 | break; | |
775cabad NC |
1907 | default: |
1908 | abort (); | |
1909 | } | |
1910 | save_relocs (tx); | |
1911 | } | |
252b5132 RH |
1912 | |
1913 | bfd_set_section_size (abfd, id7, 4); | |
1579bae1 | 1914 | d7 = xmalloc (4); |
252b5132 RH |
1915 | id7->contents = d7; |
1916 | memset (d7, 0, 4); | |
4b7f0676 | 1917 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 5); |
252b5132 RH |
1918 | save_relocs (id7); |
1919 | ||
1920 | bfd_set_section_size (abfd, id5, 4); | |
1579bae1 | 1921 | d5 = xmalloc (4); |
252b5132 RH |
1922 | id5->contents = d5; |
1923 | memset (d5, 0, 4); | |
775cabad | 1924 | |
252b5132 RH |
1925 | if (exp->flag_noname) |
1926 | { | |
1927 | d5[0] = exp->ordinal; | |
1928 | d5[1] = exp->ordinal >> 8; | |
1929 | d5[3] = 0x80; | |
1930 | } | |
1931 | else | |
1932 | { | |
1933 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 4); | |
1934 | save_relocs (id5); | |
1935 | } | |
1936 | ||
1937 | bfd_set_section_size (abfd, id4, 4); | |
1579bae1 | 1938 | d4 = xmalloc (4); |
252b5132 RH |
1939 | id4->contents = d4; |
1940 | memset (d4, 0, 4); | |
775cabad | 1941 | |
252b5132 RH |
1942 | if (exp->flag_noname) |
1943 | { | |
c2a94a7a DD |
1944 | d4[0] = exp->ordinal; |
1945 | d4[1] = exp->ordinal >> 8; | |
1946 | d4[3] = 0x80; | |
252b5132 RH |
1947 | } |
1948 | else | |
1949 | { | |
1950 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 4); | |
1951 | save_relocs (id4); | |
1952 | } | |
1953 | ||
1954 | if (exp->flag_noname) | |
1955 | { | |
1956 | len = 0; | |
1957 | bfd_set_section_size (abfd, id6, 0); | |
1958 | } | |
1959 | else | |
1960 | { | |
1961 | len = strlen (exp->name) + 3; | |
1962 | if (len & 1) | |
1963 | len++; | |
1964 | bfd_set_section_size (abfd, id6, len); | |
1579bae1 | 1965 | d6 = xmalloc (len); |
252b5132 RH |
1966 | id6->contents = d6; |
1967 | memset (d6, 0, len); | |
1968 | d6[0] = exp->hint & 0xff; | |
1969 | d6[1] = exp->hint >> 8; | |
47639182 | 1970 | strcpy ((char *) d6 + 2, exp->name); |
252b5132 RH |
1971 | } |
1972 | ||
1973 | bfd_set_symtab (abfd, symtab, symptr); | |
1974 | ||
c6c37250 | 1975 | bfd_set_section_contents (abfd, tx, td, 0, jmp_byte_count); |
252b5132 RH |
1976 | bfd_set_section_contents (abfd, id7, d7, 0, 4); |
1977 | bfd_set_section_contents (abfd, id5, d5, 0, 4); | |
1978 | bfd_set_section_contents (abfd, id4, d4, 0, 4); | |
1979 | if (!exp->flag_noname) | |
1980 | bfd_set_section_contents (abfd, id6, d6, 0, len); | |
1981 | ||
1982 | bfd_make_readable (abfd); | |
1983 | return abfd; | |
1984 | } | |
1985 | ||
b044cda1 | 1986 | static bfd * |
1579bae1 | 1987 | make_singleton_name_thunk (const char *import, bfd *parent) |
b044cda1 | 1988 | { |
775cabad | 1989 | /* Name thunks go to idata$4. */ |
b044cda1 CW |
1990 | asection *id4; |
1991 | unsigned char *d4; | |
1992 | char *oname; | |
1993 | bfd *abfd; | |
1994 | ||
1579bae1 | 1995 | oname = xmalloc (20); |
b044cda1 CW |
1996 | sprintf (oname, "nmth%06d.o", tmp_seq); |
1997 | tmp_seq++; | |
1998 | ||
1999 | abfd = bfd_create (oname, parent); | |
2000 | bfd_find_target (pe_details->object_target, abfd); | |
2001 | bfd_make_writable (abfd); | |
2002 | ||
2003 | bfd_set_format (abfd, bfd_object); | |
2004 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); | |
2005 | ||
2006 | symptr = 0; | |
1579bae1 | 2007 | symtab = xmalloc (3 * sizeof (asymbol *)); |
b044cda1 CW |
2008 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); |
2009 | quick_symbol (abfd, U ("_nm_thnk_"), import, "", id4, BSF_GLOBAL, 0); | |
2010 | quick_symbol (abfd, U ("_nm_"), import, "", UNDSEC, BSF_GLOBAL, 0); | |
2011 | ||
2012 | bfd_set_section_size (abfd, id4, 8); | |
1579bae1 | 2013 | d4 = xmalloc (4); |
b044cda1 CW |
2014 | id4->contents = d4; |
2015 | memset (d4, 0, 8); | |
2016 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 2); | |
2017 | save_relocs (id4); | |
2018 | ||
2019 | bfd_set_symtab (abfd, symtab, symptr); | |
2020 | ||
2021 | bfd_set_section_contents (abfd, id4, d4, 0, 8); | |
2022 | ||
2023 | bfd_make_readable (abfd); | |
2024 | return abfd; | |
2025 | } | |
2026 | ||
2027 | static char * | |
1579bae1 | 2028 | make_import_fixup_mark (arelent *rel) |
b044cda1 | 2029 | { |
775cabad | 2030 | /* We convert reloc to symbol, for later reference. */ |
b044cda1 CW |
2031 | static int counter; |
2032 | static char *fixup_name = NULL; | |
db09f25b | 2033 | static size_t buffer_len = 0; |
b7a26f91 | 2034 | |
fc0a2244 | 2035 | struct bfd_symbol *sym = *rel->sym_ptr_ptr; |
b7a26f91 | 2036 | |
b044cda1 | 2037 | bfd *abfd = bfd_asymbol_bfd (sym); |
fe213ce2 | 2038 | struct bfd_link_hash_entry *bh; |
b044cda1 CW |
2039 | |
2040 | if (!fixup_name) | |
2041 | { | |
1579bae1 | 2042 | fixup_name = xmalloc (384); |
b044cda1 CW |
2043 | buffer_len = 384; |
2044 | } | |
2045 | ||
2046 | if (strlen (sym->name) + 25 > buffer_len) | |
b7a26f91 | 2047 | /* Assume 25 chars for "__fu" + counter + "_". If counter is |
b044cda1 | 2048 | bigger than 20 digits long, we've got worse problems than |
775cabad | 2049 | overflowing this buffer... */ |
b044cda1 CW |
2050 | { |
2051 | free (fixup_name); | |
a35bc64f NC |
2052 | /* New buffer size is length of symbol, plus 25, but |
2053 | then rounded up to the nearest multiple of 128. */ | |
b044cda1 | 2054 | buffer_len = ((strlen (sym->name) + 25) + 127) & ~127; |
1579bae1 | 2055 | fixup_name = xmalloc (buffer_len); |
b044cda1 | 2056 | } |
b7a26f91 | 2057 | |
b044cda1 CW |
2058 | sprintf (fixup_name, "__fu%d_%s", counter++, sym->name); |
2059 | ||
fe213ce2 | 2060 | bh = NULL; |
b7a26f91 | 2061 | bfd_coff_link_add_one_symbol (&link_info, abfd, fixup_name, BSF_GLOBAL, |
b044cda1 | 2062 | current_sec, /* sym->section, */ |
b34976b6 | 2063 | rel->address, NULL, TRUE, FALSE, &bh); |
fe213ce2 AM |
2064 | |
2065 | if (0) | |
2066 | { | |
2067 | struct coff_link_hash_entry *myh; | |
2068 | ||
2069 | myh = (struct coff_link_hash_entry *) bh; | |
2070 | printf ("type:%d\n", myh->type); | |
2071 | printf ("%s\n", myh->root.u.def.section->name); | |
2072 | } | |
b044cda1 | 2073 | |
b044cda1 CW |
2074 | return fixup_name; |
2075 | } | |
2076 | ||
53baae48 | 2077 | /* .section .idata$2 |
775cabad NC |
2078 | .rva __nm_thnk_SYM (singleton thunk with name of func) |
2079 | .long 0 | |
2080 | .long 0 | |
2081 | .rva __my_dll_iname (name of dll) | |
2082 | .rva __fuNN_SYM (pointer to reference (address) in text) */ | |
b044cda1 CW |
2083 | |
2084 | static bfd * | |
1579bae1 AM |
2085 | make_import_fixup_entry (const char *name, |
2086 | const char *fixup_name, | |
2087 | const char *dll_symname, | |
2088 | bfd *parent) | |
b044cda1 | 2089 | { |
53baae48 NC |
2090 | asection *id2; |
2091 | unsigned char *d2; | |
b044cda1 CW |
2092 | char *oname; |
2093 | bfd *abfd; | |
2094 | ||
1579bae1 | 2095 | oname = xmalloc (20); |
b044cda1 CW |
2096 | sprintf (oname, "fu%06d.o", tmp_seq); |
2097 | tmp_seq++; | |
2098 | ||
2099 | abfd = bfd_create (oname, parent); | |
2100 | bfd_find_target (pe_details->object_target, abfd); | |
2101 | bfd_make_writable (abfd); | |
2102 | ||
2103 | bfd_set_format (abfd, bfd_object); | |
2104 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); | |
2105 | ||
2106 | symptr = 0; | |
1579bae1 | 2107 | symtab = xmalloc (6 * sizeof (asymbol *)); |
53baae48 | 2108 | id2 = quick_section (abfd, ".idata$2", SEC_HAS_CONTENTS, 2); |
775cabad | 2109 | |
b044cda1 CW |
2110 | quick_symbol (abfd, U ("_nm_thnk_"), name, "", UNDSEC, BSF_GLOBAL, 0); |
2111 | quick_symbol (abfd, U (""), dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0); | |
2112 | quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0); | |
2113 | ||
53baae48 NC |
2114 | bfd_set_section_size (abfd, id2, 20); |
2115 | d2 = xmalloc (20); | |
2116 | id2->contents = d2; | |
2117 | memset (d2, 0, 20); | |
b044cda1 CW |
2118 | |
2119 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 1); | |
2120 | quick_reloc (abfd, 12, BFD_RELOC_RVA, 2); | |
2121 | quick_reloc (abfd, 16, BFD_RELOC_RVA, 3); | |
53baae48 | 2122 | save_relocs (id2); |
b044cda1 CW |
2123 | |
2124 | bfd_set_symtab (abfd, symtab, symptr); | |
2125 | ||
53baae48 | 2126 | bfd_set_section_contents (abfd, id2, d2, 0, 20); |
b044cda1 CW |
2127 | |
2128 | bfd_make_readable (abfd); | |
2129 | return abfd; | |
2130 | } | |
2131 | ||
2fa9fc65 NC |
2132 | /* .section .rdata_runtime_pseudo_reloc |
2133 | .long addend | |
2134 | .rva __fuNN_SYM (pointer to reference (address) in text) */ | |
2135 | ||
2136 | static bfd * | |
1579bae1 AM |
2137 | make_runtime_pseudo_reloc (const char *name ATTRIBUTE_UNUSED, |
2138 | const char *fixup_name, | |
2139 | int addend, | |
2140 | bfd *parent) | |
2fa9fc65 NC |
2141 | { |
2142 | asection *rt_rel; | |
2143 | unsigned char *rt_rel_d; | |
2144 | char *oname; | |
2145 | bfd *abfd; | |
2146 | ||
1579bae1 | 2147 | oname = xmalloc (20); |
2fa9fc65 NC |
2148 | sprintf (oname, "rtr%06d.o", tmp_seq); |
2149 | tmp_seq++; | |
2150 | ||
2151 | abfd = bfd_create (oname, parent); | |
2152 | bfd_find_target (pe_details->object_target, abfd); | |
2153 | bfd_make_writable (abfd); | |
2154 | ||
2155 | bfd_set_format (abfd, bfd_object); | |
2156 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); | |
2157 | ||
2158 | symptr = 0; | |
1579bae1 AM |
2159 | symtab = xmalloc (2 * sizeof (asymbol *)); |
2160 | rt_rel = quick_section (abfd, ".rdata_runtime_pseudo_reloc", | |
2161 | SEC_HAS_CONTENTS, 2); | |
2fa9fc65 NC |
2162 | |
2163 | quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0); | |
2164 | ||
2165 | bfd_set_section_size (abfd, rt_rel, 8); | |
1579bae1 | 2166 | rt_rel_d = xmalloc (8); |
2fa9fc65 NC |
2167 | rt_rel->contents = rt_rel_d; |
2168 | memset (rt_rel_d, 0, 8); | |
2169 | bfd_put_32 (abfd, addend, rt_rel_d); | |
2170 | ||
2171 | quick_reloc (abfd, 4, BFD_RELOC_RVA, 1); | |
2172 | save_relocs (rt_rel); | |
2173 | ||
2174 | bfd_set_symtab (abfd, symtab, symptr); | |
2175 | ||
2176 | bfd_set_section_contents (abfd, rt_rel, rt_rel_d, 0, 8); | |
2177 | ||
2178 | bfd_make_readable (abfd); | |
2179 | return abfd; | |
2180 | } | |
2181 | ||
2182 | /* .section .rdata | |
a35bc64f | 2183 | .rva __pei386_runtime_relocator */ |
2fa9fc65 NC |
2184 | |
2185 | static bfd * | |
1579bae1 | 2186 | pe_create_runtime_relocator_reference (bfd *parent) |
2fa9fc65 NC |
2187 | { |
2188 | asection *extern_rt_rel; | |
2189 | unsigned char *extern_rt_rel_d; | |
2190 | char *oname; | |
2191 | bfd *abfd; | |
2192 | ||
1579bae1 | 2193 | oname = xmalloc (20); |
2fa9fc65 NC |
2194 | sprintf (oname, "ertr%06d.o", tmp_seq); |
2195 | tmp_seq++; | |
2196 | ||
2197 | abfd = bfd_create (oname, parent); | |
2198 | bfd_find_target (pe_details->object_target, abfd); | |
2199 | bfd_make_writable (abfd); | |
2200 | ||
2201 | bfd_set_format (abfd, bfd_object); | |
2202 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); | |
2203 | ||
2204 | symptr = 0; | |
1579bae1 | 2205 | symtab = xmalloc (2 * sizeof (asymbol *)); |
2fa9fc65 NC |
2206 | extern_rt_rel = quick_section (abfd, ".rdata", SEC_HAS_CONTENTS, 2); |
2207 | ||
1579bae1 AM |
2208 | quick_symbol (abfd, "", "__pei386_runtime_relocator", "", UNDSEC, |
2209 | BSF_NO_FLAGS, 0); | |
2fa9fc65 NC |
2210 | |
2211 | bfd_set_section_size (abfd, extern_rt_rel, 4); | |
1579bae1 | 2212 | extern_rt_rel_d = xmalloc (4); |
2fa9fc65 NC |
2213 | extern_rt_rel->contents = extern_rt_rel_d; |
2214 | ||
2215 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 1); | |
2216 | save_relocs (extern_rt_rel); | |
2217 | ||
2218 | bfd_set_symtab (abfd, symtab, symptr); | |
2219 | ||
2220 | bfd_set_section_contents (abfd, extern_rt_rel, extern_rt_rel_d, 0, 4); | |
2221 | ||
2222 | bfd_make_readable (abfd); | |
2223 | return abfd; | |
2224 | } | |
2225 | ||
b044cda1 | 2226 | void |
1579bae1 | 2227 | pe_create_import_fixup (arelent *rel, asection *s, int addend) |
b044cda1 CW |
2228 | { |
2229 | char buf[300]; | |
fc0a2244 | 2230 | struct bfd_symbol *sym = *rel->sym_ptr_ptr; |
b044cda1 | 2231 | struct bfd_link_hash_entry *name_thunk_sym; |
db09f25b | 2232 | const char *name = sym->name; |
b044cda1 | 2233 | char *fixup_name = make_import_fixup_mark (rel); |
2fa9fc65 | 2234 | bfd *b; |
b044cda1 CW |
2235 | |
2236 | sprintf (buf, U ("_nm_thnk_%s"), name); | |
2237 | ||
2238 | name_thunk_sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1); | |
2239 | ||
2240 | if (!name_thunk_sym || name_thunk_sym->type != bfd_link_hash_defined) | |
2241 | { | |
2242 | bfd *b = make_singleton_name_thunk (name, output_bfd); | |
2243 | add_bfd_to_link (b, b->filename, &link_info); | |
2244 | ||
775cabad | 2245 | /* If we ever use autoimport, we have to cast text section writable. */ |
b34976b6 | 2246 | config.text_read_only = FALSE; |
4d8907ac | 2247 | output_bfd->flags &= ~WP_TEXT; |
b044cda1 CW |
2248 | } |
2249 | ||
2fa9fc65 NC |
2250 | if (addend == 0 || link_info.pei386_runtime_pseudo_reloc) |
2251 | { | |
2252 | extern char * pe_data_import_dll; | |
2253 | char * dll_symname = pe_data_import_dll ? pe_data_import_dll : "unknown"; | |
aa3d9aba | 2254 | |
2fa9fc65 NC |
2255 | b = make_import_fixup_entry (name, fixup_name, dll_symname, output_bfd); |
2256 | add_bfd_to_link (b, b->filename, &link_info); | |
2257 | } | |
2258 | ||
2259 | if (addend != 0) | |
2260 | { | |
2261 | if (link_info.pei386_runtime_pseudo_reloc) | |
2262 | { | |
2263 | if (pe_dll_extra_pe_debug) | |
2264 | printf ("creating runtime pseudo-reloc entry for %s (addend=%d)\n", | |
2265 | fixup_name, addend); | |
2266 | b = make_runtime_pseudo_reloc (name, fixup_name, addend, output_bfd); | |
2267 | add_bfd_to_link (b, b->filename, &link_info); | |
2268 | ||
2269 | if (runtime_pseudo_relocs_created == 0) | |
2270 | { | |
2271 | b = pe_create_runtime_relocator_reference (output_bfd); | |
2272 | add_bfd_to_link (b, b->filename, &link_info); | |
2273 | } | |
2274 | runtime_pseudo_relocs_created++; | |
b34976b6 | 2275 | } |
2fa9fc65 NC |
2276 | else |
2277 | { | |
2278 | einfo (_("%C: variable '%T' can't be auto-imported. Please read the documentation for ld's --enable-auto-import for details.\n"), | |
2279 | s->owner, s, rel->address, sym->name); | |
2280 | einfo ("%X"); | |
2281 | } | |
2282 | } | |
b044cda1 CW |
2283 | } |
2284 | ||
2285 | ||
252b5132 | 2286 | void |
1579bae1 | 2287 | pe_dll_generate_implib (def_file *def, const char *impfilename) |
252b5132 RH |
2288 | { |
2289 | int i; | |
2290 | bfd *ar_head; | |
2291 | bfd *ar_tail; | |
2292 | bfd *outarch; | |
2293 | bfd *head = 0; | |
2294 | ||
5aaace27 | 2295 | dll_filename = (def->name) ? def->name : dll_name; |
252b5132 | 2296 | dll_symname = xstrdup (dll_filename); |
d643799d | 2297 | for (i = 0; dll_symname[i]; i++) |
3882b010 | 2298 | if (!ISALNUM (dll_symname[i])) |
252b5132 RH |
2299 | dll_symname[i] = '_'; |
2300 | ||
bb14f524 | 2301 | unlink_if_ordinary (impfilename); |
252b5132 RH |
2302 | |
2303 | outarch = bfd_openw (impfilename, 0); | |
2304 | ||
2305 | if (!outarch) | |
2306 | { | |
2307 | /* xgettext:c-format */ | |
2308 | einfo (_("%XCan't open .lib file: %s\n"), impfilename); | |
2309 | return; | |
2310 | } | |
2311 | ||
2312 | /* xgettext:c-format */ | |
63d85248 NC |
2313 | info_msg (_("Creating library file: %s\n"), impfilename); |
2314 | ||
252b5132 RH |
2315 | bfd_set_format (outarch, bfd_archive); |
2316 | outarch->has_armap = 1; | |
2317 | ||
5cc18311 | 2318 | /* Work out a reasonable size of things to put onto one line. */ |
252b5132 | 2319 | ar_head = make_head (outarch); |
252b5132 | 2320 | |
d643799d | 2321 | for (i = 0; i < def->num_exports; i++) |
252b5132 | 2322 | { |
86b1cc60 | 2323 | /* The import library doesn't know about the internal name. */ |
252b5132 RH |
2324 | char *internal = def->exports[i].internal_name; |
2325 | bfd *n; | |
775cabad | 2326 | |
ee31fbd0 NC |
2327 | /* Don't add PRIVATE entries to import lib. */ |
2328 | if (pe_def_file->exports[i].flag_private) | |
2329 | continue; | |
252b5132 | 2330 | def->exports[i].internal_name = def->exports[i].name; |
d643799d | 2331 | n = make_one (def->exports + i, outarch); |
252b5132 RH |
2332 | n->next = head; |
2333 | head = n; | |
2334 | def->exports[i].internal_name = internal; | |
2335 | } | |
2336 | ||
c6c37250 DD |
2337 | ar_tail = make_tail (outarch); |
2338 | ||
2339 | if (ar_head == NULL || ar_tail == NULL) | |
2340 | return; | |
2341 | ||
86b1cc60 | 2342 | /* Now stick them all into the archive. */ |
252b5132 RH |
2343 | ar_head->next = head; |
2344 | ar_tail->next = ar_head; | |
2345 | head = ar_tail; | |
2346 | ||
2347 | if (! bfd_set_archive_head (outarch, head)) | |
36230712 | 2348 | einfo ("%Xbfd_set_archive_head: %E\n"); |
5cc18311 | 2349 | |
252b5132 | 2350 | if (! bfd_close (outarch)) |
36230712 | 2351 | einfo ("%Xbfd_close %s: %E\n", impfilename); |
252b5132 RH |
2352 | |
2353 | while (head != NULL) | |
2354 | { | |
2355 | bfd *n = head->next; | |
2356 | bfd_close (head); | |
2357 | head = n; | |
2358 | } | |
2359 | } | |
2360 | ||
2361 | static void | |
1579bae1 | 2362 | add_bfd_to_link (bfd *abfd, const char *name, struct bfd_link_info *link_info) |
252b5132 RH |
2363 | { |
2364 | lang_input_statement_type *fake_file; | |
775cabad | 2365 | |
252b5132 RH |
2366 | fake_file = lang_add_input_file (name, |
2367 | lang_input_file_is_fake_enum, | |
2368 | NULL); | |
2369 | fake_file->the_bfd = abfd; | |
2370 | ldlang_add_file (fake_file); | |
775cabad | 2371 | |
252b5132 | 2372 | if (!bfd_link_add_symbols (abfd, link_info)) |
36230712 | 2373 | einfo ("%Xaddsym %s: %E\n", name); |
252b5132 RH |
2374 | } |
2375 | ||
2376 | void | |
1579bae1 | 2377 | pe_process_import_defs (bfd *output_bfd, struct bfd_link_info *link_info) |
252b5132 RH |
2378 | { |
2379 | def_file_module *module; | |
775cabad | 2380 | |
d643799d | 2381 | pe_dll_id_target (bfd_get_target (output_bfd)); |
252b5132 RH |
2382 | |
2383 | if (!pe_def_file) | |
2384 | return; | |
2385 | ||
2386 | for (module = pe_def_file->modules; module; module = module->next) | |
2387 | { | |
2388 | int i, do_this_dll; | |
2389 | ||
2390 | dll_filename = module->name; | |
2391 | dll_symname = xstrdup (module->name); | |
d643799d | 2392 | for (i = 0; dll_symname[i]; i++) |
3882b010 | 2393 | if (!ISALNUM (dll_symname[i])) |
252b5132 RH |
2394 | dll_symname[i] = '_'; |
2395 | ||
2396 | do_this_dll = 0; | |
2397 | ||
d643799d | 2398 | for (i = 0; i < pe_def_file->num_imports; i++) |
252b5132 RH |
2399 | if (pe_def_file->imports[i].module == module) |
2400 | { | |
2401 | def_file_export exp; | |
2402 | struct bfd_link_hash_entry *blhe; | |
b34976b6 | 2403 | int lead_at = (*pe_def_file->imports[i].internal_name == '@'); |
86b1cc60 | 2404 | /* See if we need this import. */ |
1579bae1 AM |
2405 | size_t len = strlen (pe_def_file->imports[i].internal_name); |
2406 | char *name = xmalloc (len + 2 + 6); | |
c9e38879 NC |
2407 | |
2408 | if (lead_at) | |
1579bae1 AM |
2409 | sprintf (name, "%s%s", "", |
2410 | pe_def_file->imports[i].internal_name); | |
c9e38879 | 2411 | else |
1579bae1 AM |
2412 | sprintf (name, "%s%s",U (""), |
2413 | pe_def_file->imports[i].internal_name); | |
c9e38879 | 2414 | |
252b5132 | 2415 | blhe = bfd_link_hash_lookup (link_info->hash, name, |
b34976b6 | 2416 | FALSE, FALSE, FALSE); |
c9e38879 | 2417 | |
874c8c99 DD |
2418 | if (!blhe || (blhe && blhe->type != bfd_link_hash_undefined)) |
2419 | { | |
c9e38879 NC |
2420 | if (lead_at) |
2421 | sprintf (name, "%s%s", U ("_imp_"), | |
2422 | pe_def_file->imports[i].internal_name); | |
2423 | else | |
2424 | sprintf (name, "%s%s", U ("_imp__"), | |
2425 | pe_def_file->imports[i].internal_name); | |
2426 | ||
874c8c99 | 2427 | blhe = bfd_link_hash_lookup (link_info->hash, name, |
b34976b6 | 2428 | FALSE, FALSE, FALSE); |
874c8c99 | 2429 | } |
252b5132 | 2430 | free (name); |
c9e38879 | 2431 | |
252b5132 RH |
2432 | if (blhe && blhe->type == bfd_link_hash_undefined) |
2433 | { | |
2434 | bfd *one; | |
86b1cc60 | 2435 | /* We do. */ |
252b5132 RH |
2436 | if (!do_this_dll) |
2437 | { | |
2438 | bfd *ar_head = make_head (output_bfd); | |
2439 | add_bfd_to_link (ar_head, ar_head->filename, link_info); | |
2440 | do_this_dll = 1; | |
2441 | } | |
2442 | exp.internal_name = pe_def_file->imports[i].internal_name; | |
2443 | exp.name = pe_def_file->imports[i].name; | |
2444 | exp.ordinal = pe_def_file->imports[i].ordinal; | |
2445 | exp.hint = exp.ordinal >= 0 ? exp.ordinal : 0; | |
2446 | exp.flag_private = 0; | |
2447 | exp.flag_constant = 0; | |
939ba9d0 | 2448 | exp.flag_data = pe_def_file->imports[i].data; |
252b5132 RH |
2449 | exp.flag_noname = exp.name ? 0 : 1; |
2450 | one = make_one (&exp, output_bfd); | |
2451 | add_bfd_to_link (one, one->filename, link_info); | |
2452 | } | |
2453 | } | |
2454 | if (do_this_dll) | |
2455 | { | |
2456 | bfd *ar_tail = make_tail (output_bfd); | |
2457 | add_bfd_to_link (ar_tail, ar_tail->filename, link_info); | |
2458 | } | |
2459 | ||
2460 | free (dll_symname); | |
2461 | } | |
2462 | } | |
2463 | ||
775cabad | 2464 | /* We were handed a *.DLL file. Parse it and turn it into a set of |
b34976b6 AM |
2465 | IMPORTS directives in the def file. Return TRUE if the file was |
2466 | handled, FALSE if not. */ | |
252b5132 RH |
2467 | |
2468 | static unsigned int | |
1579bae1 | 2469 | pe_get16 (bfd *abfd, int where) |
252b5132 RH |
2470 | { |
2471 | unsigned char b[2]; | |
775cabad | 2472 | |
db09f25b AM |
2473 | bfd_seek (abfd, (file_ptr) where, SEEK_SET); |
2474 | bfd_bread (b, (bfd_size_type) 2, abfd); | |
d643799d | 2475 | return b[0] + (b[1] << 8); |
252b5132 RH |
2476 | } |
2477 | ||
2478 | static unsigned int | |
1579bae1 | 2479 | pe_get32 (bfd *abfd, int where) |
252b5132 RH |
2480 | { |
2481 | unsigned char b[4]; | |
775cabad | 2482 | |
db09f25b AM |
2483 | bfd_seek (abfd, (file_ptr) where, SEEK_SET); |
2484 | bfd_bread (b, (bfd_size_type) 4, abfd); | |
d643799d | 2485 | return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24); |
252b5132 RH |
2486 | } |
2487 | ||
252b5132 | 2488 | static unsigned int |
1579bae1 | 2489 | pe_as32 (void *ptr) |
252b5132 RH |
2490 | { |
2491 | unsigned char *b = ptr; | |
775cabad | 2492 | |
d643799d | 2493 | return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24); |
252b5132 RH |
2494 | } |
2495 | ||
b34976b6 | 2496 | bfd_boolean |
1579bae1 | 2497 | pe_implied_import_dll (const char *filename) |
252b5132 RH |
2498 | { |
2499 | bfd *dll; | |
2500 | unsigned long pe_header_offset, opthdr_ofs, num_entries, i; | |
2501 | unsigned long export_rva, export_size, nsections, secptr, expptr; | |
939ba9d0 | 2502 | unsigned long exp_funcbase; |
47639182 AM |
2503 | unsigned char *expdata; |
2504 | char *erva; | |
252b5132 | 2505 | unsigned long name_rvas, ordinals, nexp, ordbase; |
1069dd8d | 2506 | const char *dll_name; |
939ba9d0 NC |
2507 | /* Initialization with start > end guarantees that is_data |
2508 | will not be set by mistake, and avoids compiler warning. */ | |
2509 | unsigned long data_start = 1; | |
661a32f7 DS |
2510 | unsigned long data_end = 0; |
2511 | unsigned long rdata_start = 1; | |
2512 | unsigned long rdata_end = 0; | |
2513 | unsigned long bss_start = 1; | |
2514 | unsigned long bss_end = 0; | |
252b5132 RH |
2515 | |
2516 | /* No, I can't use bfd here. kernel32.dll puts its export table in | |
5cc18311 | 2517 | the middle of the .rdata section. */ |
c6c37250 | 2518 | dll = bfd_openr (filename, pe_details->target_name); |
252b5132 RH |
2519 | if (!dll) |
2520 | { | |
36230712 | 2521 | einfo ("%Xopen %s: %E\n", filename); |
b34976b6 | 2522 | return FALSE; |
252b5132 | 2523 | } |
775cabad | 2524 | |
86b1cc60 | 2525 | /* PEI dlls seem to be bfd_objects. */ |
252b5132 RH |
2526 | if (!bfd_check_format (dll, bfd_object)) |
2527 | { | |
2528 | einfo ("%X%s: this doesn't appear to be a DLL\n", filename); | |
b34976b6 | 2529 | return FALSE; |
252b5132 RH |
2530 | } |
2531 | ||
939ba9d0 | 2532 | /* Get pe_header, optional header and numbers of export entries. */ |
252b5132 RH |
2533 | pe_header_offset = pe_get32 (dll, 0x3c); |
2534 | opthdr_ofs = pe_header_offset + 4 + 20; | |
2535 | num_entries = pe_get32 (dll, opthdr_ofs + 92); | |
775cabad NC |
2536 | |
2537 | if (num_entries < 1) /* No exports. */ | |
b34976b6 | 2538 | return FALSE; |
775cabad | 2539 | |
252b5132 RH |
2540 | export_rva = pe_get32 (dll, opthdr_ofs + 96); |
2541 | export_size = pe_get32 (dll, opthdr_ofs + 100); | |
2542 | nsections = pe_get16 (dll, pe_header_offset + 4 + 2); | |
2543 | secptr = (pe_header_offset + 4 + 20 + | |
2544 | pe_get16 (dll, pe_header_offset + 4 + 16)); | |
2545 | expptr = 0; | |
775cabad | 2546 | |
1579bae1 | 2547 | /* Get the rva and size of the export section. */ |
d643799d | 2548 | for (i = 0; i < nsections; i++) |
252b5132 RH |
2549 | { |
2550 | char sname[8]; | |
2551 | unsigned long secptr1 = secptr + 40 * i; | |
2552 | unsigned long vaddr = pe_get32 (dll, secptr1 + 12); | |
2553 | unsigned long vsize = pe_get32 (dll, secptr1 + 16); | |
2554 | unsigned long fptr = pe_get32 (dll, secptr1 + 20); | |
775cabad | 2555 | |
db09f25b AM |
2556 | bfd_seek (dll, (file_ptr) secptr1, SEEK_SET); |
2557 | bfd_bread (sname, (bfd_size_type) 8, dll); | |
775cabad | 2558 | |
d643799d | 2559 | if (vaddr <= export_rva && vaddr + vsize > export_rva) |
252b5132 RH |
2560 | { |
2561 | expptr = fptr + (export_rva - vaddr); | |
2562 | if (export_rva + export_size > vaddr + vsize) | |
2563 | export_size = vsize - (export_rva - vaddr); | |
2564 | break; | |
2565 | } | |
2566 | } | |
2567 | ||
939ba9d0 | 2568 | /* Scan sections and store the base and size of the |
1579bae1 | 2569 | data and bss segments in data/base_start/end. */ |
939ba9d0 NC |
2570 | for (i = 0; i < nsections; i++) |
2571 | { | |
2572 | unsigned long secptr1 = secptr + 40 * i; | |
2573 | unsigned long vsize = pe_get32 (dll, secptr1 + 8); | |
2574 | unsigned long vaddr = pe_get32 (dll, secptr1 + 12); | |
2575 | unsigned long flags = pe_get32 (dll, secptr1 + 36); | |
2576 | char sec_name[9]; | |
2577 | ||
2578 | sec_name[8] = '\0'; | |
2579 | bfd_seek (dll, (file_ptr) secptr1 + 0, SEEK_SET); | |
2580 | bfd_bread (sec_name, (bfd_size_type) 8, dll); | |
2581 | ||
2582 | if (strcmp(sec_name,".data") == 0) | |
2583 | { | |
2584 | data_start = vaddr; | |
2585 | data_end = vaddr + vsize; | |
2586 | ||
661a32f7 DS |
2587 | if (pe_dll_extra_pe_debug) |
2588 | printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n", | |
2589 | __FUNCTION__, sec_name, vaddr, vaddr + vsize, flags); | |
2590 | } | |
2591 | else if (strcmp(sec_name,".rdata") == 0) | |
2592 | { | |
2593 | rdata_start = vaddr; | |
2594 | rdata_end = vaddr + vsize; | |
2595 | ||
939ba9d0 NC |
2596 | if (pe_dll_extra_pe_debug) |
2597 | printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n", | |
2598 | __FUNCTION__, sec_name, vaddr, vaddr + vsize, flags); | |
1579bae1 | 2599 | } |
939ba9d0 NC |
2600 | else if (strcmp (sec_name,".bss") == 0) |
2601 | { | |
2602 | bss_start = vaddr; | |
2603 | bss_end = vaddr + vsize; | |
2604 | ||
2605 | if (pe_dll_extra_pe_debug) | |
2606 | printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n", | |
2607 | __FUNCTION__, sec_name, vaddr, vaddr + vsize, flags); | |
2608 | } | |
2609 | } | |
2610 | ||
1579bae1 | 2611 | expdata = xmalloc (export_size); |
db09f25b AM |
2612 | bfd_seek (dll, (file_ptr) expptr, SEEK_SET); |
2613 | bfd_bread (expdata, (bfd_size_type) export_size, dll); | |
47639182 | 2614 | erva = (char *) expdata - export_rva; |
252b5132 RH |
2615 | |
2616 | if (pe_def_file == 0) | |
d643799d | 2617 | pe_def_file = def_file_empty (); |
252b5132 | 2618 | |
d643799d KH |
2619 | nexp = pe_as32 (expdata + 24); |
2620 | name_rvas = pe_as32 (expdata + 32); | |
2621 | ordinals = pe_as32 (expdata + 36); | |
2622 | ordbase = pe_as32 (expdata + 16); | |
939ba9d0 | 2623 | exp_funcbase = pe_as32 (expdata + 28); |
775cabad | 2624 | |
939ba9d0 NC |
2625 | /* Use internal dll name instead of filename |
2626 | to enable symbolic dll linking. */ | |
47639182 | 2627 | dll_name = erva + pe_as32 (expdata + 12); |
939ba9d0 | 2628 | |
a35bc64f NC |
2629 | /* Check to see if the dll has already been added to |
2630 | the definition list and if so return without error. | |
2631 | This avoids multiple symbol definitions. */ | |
2632 | if (def_get_module (pe_def_file, dll_name)) | |
2633 | { | |
2634 | if (pe_dll_extra_pe_debug) | |
2635 | printf ("%s is already loaded\n", dll_name); | |
2636 | return TRUE; | |
2637 | } | |
2638 | ||
939ba9d0 | 2639 | /* Iterate through the list of symbols. */ |
d643799d | 2640 | for (i = 0; i < nexp; i++) |
252b5132 | 2641 | { |
939ba9d0 | 2642 | /* Pointer to the names vector. */ |
d643799d | 2643 | unsigned long name_rva = pe_as32 (erva + name_rvas + i * 4); |
252b5132 | 2644 | def_file_import *imp; |
1579bae1 | 2645 | /* Pointer to the function address vector. */ |
939ba9d0 NC |
2646 | unsigned long func_rva = pe_as32 (erva + exp_funcbase + i * 4); |
2647 | int is_data = 0; | |
2648 | ||
2649 | /* Skip unwanted symbols, which are | |
2650 | exported in buggy auto-import releases. */ | |
2651 | if (strncmp (erva + name_rva, "_nm_", 4) != 0) | |
2652 | { | |
661a32f7 DS |
2653 | /* is_data is true if the address is in the data, rdata or bss |
2654 | segment. */ | |
939ba9d0 NC |
2655 | is_data = |
2656 | (func_rva >= data_start && func_rva < data_end) | |
661a32f7 | 2657 | || (func_rva >= rdata_start && func_rva < rdata_end) |
939ba9d0 NC |
2658 | || (func_rva >= bss_start && func_rva < bss_end); |
2659 | ||
2660 | imp = def_file_add_import (pe_def_file, erva + name_rva, | |
2661 | dll_name, i, 0); | |
396a2467 | 2662 | /* Mark symbol type. */ |
939ba9d0 | 2663 | imp->data = is_data; |
1579bae1 | 2664 | |
939ba9d0 NC |
2665 | if (pe_dll_extra_pe_debug) |
2666 | printf ("%s dll-name: %s sym: %s addr: 0x%lx %s\n", | |
2667 | __FUNCTION__, dll_name, erva + name_rva, | |
2668 | func_rva, is_data ? "(data)" : ""); | |
2669 | } | |
252b5132 RH |
2670 | } |
2671 | ||
b34976b6 | 2672 | return TRUE; |
252b5132 RH |
2673 | } |
2674 | ||
775cabad NC |
2675 | /* These are the main functions, called from the emulation. The first |
2676 | is called after the bfds are read, so we can guess at how much space | |
2677 | we need. The second is called after everything is placed, so we | |
2678 | can put the right values in place. */ | |
252b5132 RH |
2679 | |
2680 | void | |
1579bae1 | 2681 | pe_dll_build_sections (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2682 | { |
c6c37250 | 2683 | pe_dll_id_target (bfd_get_target (abfd)); |
252b5132 RH |
2684 | process_def_file (abfd, info); |
2685 | ||
1579bae1 | 2686 | if (pe_def_file->num_exports == 0 && !info->shared) |
2b817be1 NC |
2687 | return; |
2688 | ||
252b5132 | 2689 | generate_edata (abfd, info); |
c6c37250 DD |
2690 | build_filler_bfd (1); |
2691 | } | |
2692 | ||
2693 | void | |
1579bae1 | 2694 | pe_exe_build_sections (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) |
c6c37250 DD |
2695 | { |
2696 | pe_dll_id_target (bfd_get_target (abfd)); | |
2697 | build_filler_bfd (0); | |
252b5132 RH |
2698 | } |
2699 | ||
2700 | void | |
1579bae1 | 2701 | pe_dll_fill_sections (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2702 | { |
c6c37250 | 2703 | pe_dll_id_target (bfd_get_target (abfd)); |
252b5132 RH |
2704 | image_base = pe_data (abfd)->pe_opthdr.ImageBase; |
2705 | ||
2706 | generate_reloc (abfd, info); | |
2707 | if (reloc_sz > 0) | |
2708 | { | |
2709 | bfd_set_section_size (filler_bfd, reloc_s, reloc_sz); | |
2710 | ||
2711 | /* Resize the sections. */ | |
38975f9e | 2712 | lang_reset_memory_regions (); |
e9ee469a | 2713 | lang_size_sections (NULL, TRUE); |
252b5132 RH |
2714 | |
2715 | /* Redo special stuff. */ | |
2716 | ldemul_after_allocation (); | |
2717 | ||
2718 | /* Do the assignments again. */ | |
e9ee469a | 2719 | lang_do_assignments (); |
252b5132 RH |
2720 | } |
2721 | ||
2722 | fill_edata (abfd, info); | |
2723 | ||
db8acf26 | 2724 | if (info->shared && !info->pie) |
2b817be1 | 2725 | pe_data (abfd)->dll = 1; |
252b5132 RH |
2726 | |
2727 | edata_s->contents = edata_d; | |
2728 | reloc_s->contents = reloc_d; | |
2729 | } | |
c6c37250 DD |
2730 | |
2731 | void | |
1579bae1 | 2732 | pe_exe_fill_sections (bfd *abfd, struct bfd_link_info *info) |
c6c37250 DD |
2733 | { |
2734 | pe_dll_id_target (bfd_get_target (abfd)); | |
2735 | image_base = pe_data (abfd)->pe_opthdr.ImageBase; | |
2736 | ||
2737 | generate_reloc (abfd, info); | |
2738 | if (reloc_sz > 0) | |
2739 | { | |
2740 | bfd_set_section_size (filler_bfd, reloc_s, reloc_sz); | |
2741 | ||
2742 | /* Resize the sections. */ | |
38975f9e | 2743 | lang_reset_memory_regions (); |
e9ee469a | 2744 | lang_size_sections (NULL, TRUE); |
c6c37250 DD |
2745 | |
2746 | /* Redo special stuff. */ | |
2747 | ldemul_after_allocation (); | |
2748 | ||
2749 | /* Do the assignments again. */ | |
e9ee469a | 2750 | lang_do_assignments (); |
c6c37250 DD |
2751 | } |
2752 | reloc_s->contents = reloc_d; | |
2753 | } |