Commit | Line | Data |
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252b5132 | 1 | /* Routines to help build PEI-format DLLs (Win32 etc) |
1c43e6e5 | 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by DJ Delorie <dj@cygnus.com> |
4 | ||
5 | This file is part of GLD, the Gnu Linker. | |
6 | ||
7 | GLD is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GLD is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GLD; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "bfdlink.h" | |
25 | #include "libiberty.h" | |
3882b010 | 26 | #include "safe-ctype.h" |
252b5132 RH |
27 | |
28 | #include <time.h> | |
252b5132 RH |
29 | |
30 | #include "ld.h" | |
31 | #include "ldexp.h" | |
32 | #include "ldlang.h" | |
33 | #include "ldwrite.h" | |
34 | #include "ldmisc.h" | |
df2a7313 | 35 | #include <ldgram.h> |
252b5132 | 36 | #include "ldmain.h" |
b71e2778 | 37 | #include "ldfile.h" |
252b5132 RH |
38 | #include "ldemul.h" |
39 | #include "coff/internal.h" | |
40 | #include "../bfd/libcoff.h" | |
41 | #include "deffile.h" | |
1069dd8d | 42 | #include "pe-dll.h" |
252b5132 | 43 | |
775cabad NC |
44 | /* This file turns a regular Windows PE image into a DLL. Because of |
45 | the complexity of this operation, it has been broken down into a | |
46 | number of separate modules which are all called by the main function | |
47 | at the end of this file. This function is not re-entrant and is | |
48 | normally only called once, so static variables are used to reduce | |
49 | the number of parameters and return values required. | |
b7a26f91 | 50 | |
775cabad NC |
51 | See also: ld/emultempl/pe.em. */ |
52 | ||
53 | /* Auto-import feature by Paul Sokolovsky | |
54 | ||
55 | Quick facts: | |
56 | ||
57 | 1. With this feature on, DLL clients can import variables from DLL | |
58 | without any concern from their side (for example, without any source | |
59 | code modifications). | |
60 | ||
61 | 2. This is done completely in bounds of the PE specification (to be fair, | |
396a2467 | 62 | there's a place where it pokes nose out of, but in practice it works). |
775cabad NC |
63 | So, resulting module can be used with any other PE compiler/linker. |
64 | ||
65 | 3. Auto-import is fully compatible with standard import method and they | |
66 | can be mixed together. | |
67 | ||
68 | 4. Overheads: space: 8 bytes per imported symbol, plus 20 for each | |
69 | reference to it; load time: negligible; virtual/physical memory: should be | |
70 | less than effect of DLL relocation, and I sincerely hope it doesn't affect | |
71 | DLL sharability (too much). | |
72 | ||
73 | Idea | |
74 | ||
75 | The obvious and only way to get rid of dllimport insanity is to make client | |
76 | access variable directly in the DLL, bypassing extra dereference. I.e., | |
396a2467 | 77 | whenever client contains something like |
775cabad NC |
78 | |
79 | mov dll_var,%eax, | |
80 | ||
81 | address of dll_var in the command should be relocated to point into loaded | |
82 | DLL. The aim is to make OS loader do so, and than make ld help with that. | |
83 | Import section of PE made following way: there's a vector of structures | |
84 | each describing imports from particular DLL. Each such structure points | |
396a2467 | 85 | to two other parallel vectors: one holding imported names, and one which |
775cabad NC |
86 | will hold address of corresponding imported name. So, the solution is |
87 | de-vectorize these structures, making import locations be sparse and | |
88 | pointing directly into code. Before continuing, it is worth a note that, | |
89 | while authors strives to make PE act ELF-like, there're some other people | |
90 | make ELF act PE-like: elfvector, ;-) . | |
91 | ||
92 | Implementation | |
93 | ||
94 | For each reference of data symbol to be imported from DLL (to set of which | |
95 | belong symbols with name <sym>, if __imp_<sym> is found in implib), the | |
96 | import fixup entry is generated. That entry is of type | |
97 | IMAGE_IMPORT_DESCRIPTOR and stored in .idata$3 subsection. Each | |
98 | fixup entry contains pointer to symbol's address within .text section | |
99 | (marked with __fuN_<sym> symbol, where N is integer), pointer to DLL name | |
100 | (so, DLL name is referenced by multiple entries), and pointer to symbol | |
101 | name thunk. Symbol name thunk is singleton vector (__nm_th_<symbol>) | |
102 | pointing to IMAGE_IMPORT_BY_NAME structure (__nm_<symbol>) directly | |
103 | containing imported name. Here comes that "om the edge" problem mentioned | |
104 | above: PE specification rambles that name vector (OriginalFirstThunk) | |
105 | should run in parallel with addresses vector (FirstThunk), i.e. that they | |
106 | should have same number of elements and terminated with zero. We violate | |
396a2467 | 107 | this, since FirstThunk points directly into machine code. But in practice, |
775cabad NC |
108 | OS loader implemented the sane way: it goes thru OriginalFirstThunk and |
109 | puts addresses to FirstThunk, not something else. It once again should be | |
110 | noted that dll and symbol name structures are reused across fixup entries | |
111 | and should be there anyway to support standard import stuff, so sustained | |
112 | overhead is 20 bytes per reference. Other question is whether having several | |
113 | IMAGE_IMPORT_DESCRIPTORS for the same DLL is possible. Answer is yes, it is | |
114 | done even by native compiler/linker (libth32's functions are in fact reside | |
115 | in windows9x kernel32.dll, so if you use it, you have two | |
116 | IMAGE_IMPORT_DESCRIPTORS for kernel32.dll). Yet other question is whether | |
117 | referencing the same PE structures several times is valid. The answer is why | |
396a2467 | 118 | not, prohibiting that (detecting violation) would require more work on |
775cabad NC |
119 | behalf of loader than not doing it. |
120 | ||
121 | See also: ld/emultempl/pe.em. */ | |
b044cda1 | 122 | |
1579bae1 | 123 | static void add_bfd_to_link (bfd *, const char *, struct bfd_link_info *); |
b044cda1 | 124 | |
775cabad | 125 | /* For emultempl/pe.em. */ |
252b5132 | 126 | |
775cabad | 127 | def_file * pe_def_file = 0; |
252b5132 RH |
128 | int pe_dll_export_everything = 0; |
129 | int pe_dll_do_default_excludes = 1; | |
130 | int pe_dll_kill_ats = 0; | |
131 | int pe_dll_stdcall_aliases = 0; | |
870df5dc NC |
132 | int pe_dll_warn_dup_exports = 0; |
133 | int pe_dll_compat_implib = 0; | |
b044cda1 | 134 | int pe_dll_extra_pe_debug = 0; |
252b5132 | 135 | |
775cabad | 136 | /* Static variables and types. */ |
252b5132 RH |
137 | |
138 | static bfd_vma image_base; | |
252b5132 RH |
139 | static bfd *filler_bfd; |
140 | static struct sec *edata_s, *reloc_s; | |
141 | static unsigned char *edata_d, *reloc_d; | |
1069dd8d | 142 | static size_t edata_sz, reloc_sz; |
2fa9fc65 | 143 | static int runtime_pseudo_relocs_created = 0; |
252b5132 | 144 | |
775cabad NC |
145 | typedef struct |
146 | { | |
147 | char *target_name; | |
148 | char *object_target; | |
149 | unsigned int imagebase_reloc; | |
150 | int pe_arch; | |
151 | int bfd_arch; | |
152 | int underscored; | |
153 | } | |
154 | pe_details_type; | |
155 | ||
156 | typedef struct | |
157 | { | |
158 | char *name; | |
159 | int len; | |
160 | } | |
161 | autofilter_entry_type; | |
b044cda1 | 162 | |
c6c37250 | 163 | #define PE_ARCH_i386 1 |
344a211f NC |
164 | #define PE_ARCH_sh 2 |
165 | #define PE_ARCH_mips 3 | |
166 | #define PE_ARCH_arm 4 | |
775cabad | 167 | #define PE_ARCH_arm_epoc 5 |
c6c37250 | 168 | |
775cabad NC |
169 | static pe_details_type pe_detail_list[] = |
170 | { | |
c6c37250 DD |
171 | { |
172 | "pei-i386", | |
173 | "pe-i386", | |
174 | 7 /* R_IMAGEBASE */, | |
175 | PE_ARCH_i386, | |
176 | bfd_arch_i386, | |
177 | 1 | |
178 | }, | |
344a211f NC |
179 | { |
180 | "pei-shl", | |
181 | "pe-shl", | |
182 | 16 /* R_SH_IMAGEBASE */, | |
183 | PE_ARCH_sh, | |
184 | bfd_arch_sh, | |
185 | 1 | |
186 | }, | |
187 | { | |
188 | "pei-mips", | |
189 | "pe-mips", | |
190 | 34 /* MIPS_R_RVA */, | |
191 | PE_ARCH_mips, | |
192 | bfd_arch_mips, | |
193 | 0 | |
194 | }, | |
195 | { | |
196 | "pei-arm-little", | |
197 | "pe-arm-little", | |
198 | 11 /* ARM_RVA32 */, | |
199 | PE_ARCH_arm, | |
200 | bfd_arch_arm, | |
2b817be1 | 201 | 1 |
344a211f | 202 | }, |
775cabad NC |
203 | { |
204 | "epoc-pei-arm-little", | |
205 | "epoc-pe-arm-little", | |
206 | 11 /* ARM_RVA32 */, | |
207 | PE_ARCH_arm_epoc, | |
208 | bfd_arch_arm, | |
209 | 0 | |
210 | }, | |
1069dd8d | 211 | { NULL, NULL, 0, 0, 0, 0 } |
c6c37250 DD |
212 | }; |
213 | ||
214 | static pe_details_type *pe_details; | |
215 | ||
775cabad NC |
216 | static autofilter_entry_type autofilter_symbollist[] = |
217 | { | |
b044cda1 CW |
218 | { "DllMain@12", 10 }, |
219 | { "DllEntryPoint@0", 15 }, | |
220 | { "DllMainCRTStartup@12", 20 }, | |
221 | { "_cygwin_dll_entry@12", 20 }, | |
222 | { "_cygwin_crt0_common@8", 21 }, | |
223 | { "_cygwin_noncygwin_dll_entry@12", 30 }, | |
224 | { "impure_ptr", 10 }, | |
1c43e6e5 NC |
225 | { "_pei386_runtime_relocator", 25 }, |
226 | { "do_pseudo_reloc", 15 }, | |
54d4efe3 | 227 | { "cygwin_crt0", 11 }, |
b044cda1 CW |
228 | { NULL, 0 } |
229 | }; | |
775cabad NC |
230 | |
231 | /* Do not specify library suffix explicitly, to allow for dllized versions. */ | |
232 | static autofilter_entry_type autofilter_liblist[] = | |
233 | { | |
75c2ea5b CF |
234 | { "libgcc", 6 }, |
235 | { "libstdc++", 9 }, | |
236 | { "libmingw32", 10 }, | |
9e8d33e7 | 237 | { "libmingwex", 10 }, |
75c2ea5b CF |
238 | { "libg2c", 6 }, |
239 | { "libsupc++", 9 }, | |
240 | { "libobjc", 7 }, | |
9e8d33e7 | 241 | { "libgcj", 6 }, |
b044cda1 CW |
242 | { NULL, 0 } |
243 | }; | |
775cabad NC |
244 | |
245 | static autofilter_entry_type autofilter_objlist[] = | |
246 | { | |
b044cda1 CW |
247 | { "crt0.o", 6 }, |
248 | { "crt1.o", 6 }, | |
249 | { "crt2.o", 6 }, | |
5b784096 DD |
250 | { "dllcrt1.o", 9 }, |
251 | { "dllcrt2.o", 9 }, | |
59d28a94 | 252 | { "gcrt0.o", 7 }, |
663dd378 | 253 | { "gcrt1.o", 7 }, |
b7a26f91 | 254 | { "gcrt2.o", 7 }, |
70b0be79 CF |
255 | { "crtbegin.o", 10 }, |
256 | { "crtend.o", 8 }, | |
b044cda1 CW |
257 | { NULL, 0 } |
258 | }; | |
775cabad NC |
259 | |
260 | static autofilter_entry_type autofilter_symbolprefixlist[] = | |
261 | { | |
262 | /* { "__imp_", 6 }, */ | |
263 | /* Do __imp_ explicitly to save time. */ | |
b044cda1 | 264 | { "__rtti_", 7 }, |
39cebe23 NC |
265 | /* Don't re-export auto-imported symbols. */ |
266 | { "_nm_", 4 }, | |
b044cda1 | 267 | { "__builtin_", 10 }, |
775cabad NC |
268 | /* Don't export symbols specifying internal DLL layout. */ |
269 | { "_head_", 6 }, | |
b044cda1 CW |
270 | { "_fmode", 6 }, |
271 | { "_impure_ptr", 11 }, | |
272 | { "cygwin_attach_dll", 17 }, | |
273 | { "cygwin_premain0", 15 }, | |
274 | { "cygwin_premain1", 15 }, | |
275 | { "cygwin_premain2", 15 }, | |
276 | { "cygwin_premain3", 15 }, | |
277 | { "environ", 7 }, | |
278 | { NULL, 0 } | |
279 | }; | |
775cabad NC |
280 | |
281 | static autofilter_entry_type autofilter_symbolsuffixlist[] = | |
282 | { | |
b044cda1 CW |
283 | { "_iname", 6 }, |
284 | { NULL, 0 } | |
285 | }; | |
286 | ||
c6c37250 DD |
287 | #define U(str) (pe_details->underscored ? "_" str : str) |
288 | ||
289 | void | |
1579bae1 | 290 | pe_dll_id_target (const char *target) |
c6c37250 DD |
291 | { |
292 | int i; | |
775cabad | 293 | |
d643799d | 294 | for (i = 0; pe_detail_list[i].target_name; i++) |
9d68bc82 DD |
295 | if (strcmp (pe_detail_list[i].target_name, target) == 0 |
296 | || strcmp (pe_detail_list[i].object_target, target) == 0) | |
c6c37250 | 297 | { |
d643799d | 298 | pe_details = pe_detail_list + i; |
c6c37250 DD |
299 | return; |
300 | } | |
301 | einfo (_("%XUnsupported PEI architecture: %s\n"), target); | |
302 | exit (1); | |
303 | } | |
304 | ||
b7a26f91 | 305 | /* Helper functions for qsort. Relocs must be sorted so that we can write |
775cabad | 306 | them out by pages. */ |
252b5132 | 307 | |
775cabad NC |
308 | typedef struct |
309 | { | |
310 | bfd_vma vma; | |
311 | char type; | |
312 | short extra; | |
313 | } | |
314 | reloc_data_type; | |
c6c37250 | 315 | |
252b5132 | 316 | static int |
1579bae1 | 317 | reloc_sort (const void *va, const void *vb) |
252b5132 | 318 | { |
1579bae1 AM |
319 | bfd_vma a = ((const reloc_data_type *) va)->vma; |
320 | bfd_vma b = ((const reloc_data_type *) vb)->vma; | |
775cabad | 321 | |
c6c37250 | 322 | return (a > b) ? 1 : ((a < b) ? -1 : 0); |
252b5132 RH |
323 | } |
324 | ||
325 | static int | |
1579bae1 | 326 | pe_export_sort (const void *va, const void *vb) |
252b5132 | 327 | { |
1579bae1 AM |
328 | const def_file_export *a = va; |
329 | const def_file_export *b = vb; | |
775cabad | 330 | |
252b5132 RH |
331 | return strcmp (a->name, b->name); |
332 | } | |
333 | ||
775cabad | 334 | /* Read and process the .DEF file. */ |
252b5132 RH |
335 | |
336 | /* These correspond to the entries in pe_def_file->exports[]. I use | |
337 | exported_symbol_sections[i] to tag whether or not the symbol was | |
5cc18311 | 338 | defined, since we can't export symbols we don't have. */ |
252b5132 RH |
339 | |
340 | static bfd_vma *exported_symbol_offsets; | |
341 | static struct sec **exported_symbol_sections; | |
252b5132 RH |
342 | static int export_table_size; |
343 | static int count_exported; | |
344 | static int count_exported_byname; | |
345 | static int count_with_ordinals; | |
346 | static const char *dll_name; | |
347 | static int min_ordinal, max_ordinal; | |
348 | static int *exported_symbols; | |
349 | ||
775cabad NC |
350 | typedef struct exclude_list_struct |
351 | { | |
352 | char *string; | |
353 | struct exclude_list_struct *next; | |
658957db | 354 | int type; |
775cabad NC |
355 | } |
356 | exclude_list_struct; | |
86b1cc60 | 357 | |
252b5132 RH |
358 | static struct exclude_list_struct *excludes = 0; |
359 | ||
360 | void | |
1579bae1 | 361 | pe_dll_add_excludes (const char *new_excludes, const int type) |
252b5132 RH |
362 | { |
363 | char *local_copy; | |
364 | char *exclude_string; | |
365 | ||
366 | local_copy = xstrdup (new_excludes); | |
367 | ||
368 | exclude_string = strtok (local_copy, ",:"); | |
369 | for (; exclude_string; exclude_string = strtok (NULL, ",:")) | |
370 | { | |
371 | struct exclude_list_struct *new_exclude; | |
372 | ||
1579bae1 AM |
373 | new_exclude = xmalloc (sizeof (struct exclude_list_struct)); |
374 | new_exclude->string = xmalloc (strlen (exclude_string) + 1); | |
252b5132 | 375 | strcpy (new_exclude->string, exclude_string); |
70b0be79 | 376 | new_exclude->type = type; |
252b5132 RH |
377 | new_exclude->next = excludes; |
378 | excludes = new_exclude; | |
379 | } | |
380 | ||
381 | free (local_copy); | |
382 | } | |
383 | ||
70b0be79 | 384 | |
775cabad NC |
385 | /* abfd is a bfd containing n (or NULL) |
386 | It can be used for contextual checks. */ | |
387 | ||
252b5132 | 388 | static int |
1579bae1 | 389 | auto_export (bfd *abfd, def_file *d, const char *n) |
252b5132 RH |
390 | { |
391 | int i; | |
392 | struct exclude_list_struct *ex; | |
b044cda1 | 393 | autofilter_entry_type *afptr; |
70b0be79 CF |
394 | const char * libname = 0; |
395 | if (abfd && abfd->my_archive) | |
396 | libname = lbasename (abfd->my_archive->filename); | |
b044cda1 | 397 | |
775cabad | 398 | /* We should not re-export imported stuff. */ |
b044cda1 CW |
399 | if (strncmp (n, "_imp__", 6) == 0) |
400 | return 0; | |
401 | ||
252b5132 RH |
402 | for (i = 0; i < d->num_exports; i++) |
403 | if (strcmp (d->exports[i].name, n) == 0) | |
404 | return 0; | |
775cabad | 405 | |
252b5132 RH |
406 | if (pe_dll_do_default_excludes) |
407 | { | |
663dd378 | 408 | const char * p; |
775cabad NC |
409 | int len; |
410 | ||
b044cda1 | 411 | if (pe_dll_extra_pe_debug) |
775cabad NC |
412 | printf ("considering exporting: %s, abfd=%p, abfd->my_arc=%p\n", |
413 | n, abfd, abfd->my_archive); | |
b044cda1 CW |
414 | |
415 | /* First of all, make context checks: | |
1579bae1 | 416 | Don't export anything from standard libs. */ |
658957db | 417 | if (libname) |
b044cda1 CW |
418 | { |
419 | afptr = autofilter_liblist; | |
775cabad | 420 | |
b044cda1 CW |
421 | while (afptr->name) |
422 | { | |
70b0be79 | 423 | if (strncmp (libname, afptr->name, afptr->len) == 0 ) |
b044cda1 CW |
424 | return 0; |
425 | afptr++; | |
426 | } | |
427 | } | |
428 | ||
775cabad | 429 | /* Next, exclude symbols from certain startup objects. */ |
775cabad | 430 | |
59d28a94 | 431 | if (abfd && (p = lbasename (abfd->filename))) |
663dd378 | 432 | { |
b7a26f91 KH |
433 | afptr = autofilter_objlist; |
434 | while (afptr->name) | |
59d28a94 | 435 | { |
b7a26f91 KH |
436 | if (strcmp (p, afptr->name) == 0) |
437 | return 0; | |
59d28a94 | 438 | afptr++; |
663dd378 | 439 | } |
775cabad | 440 | } |
b044cda1 CW |
441 | |
442 | /* Don't try to blindly exclude all symbols | |
443 | that begin with '__'; this was tried and | |
775cabad | 444 | it is too restrictive. */ |
b044cda1 | 445 | |
775cabad | 446 | /* Then, exclude specific symbols. */ |
b044cda1 CW |
447 | afptr = autofilter_symbollist; |
448 | while (afptr->name) | |
449 | { | |
450 | if (strcmp (n, afptr->name) == 0) | |
451 | return 0; | |
775cabad | 452 | |
b7a26f91 | 453 | afptr++; |
b044cda1 CW |
454 | } |
455 | ||
775cabad | 456 | /* Next, exclude symbols starting with ... */ |
b044cda1 CW |
457 | afptr = autofilter_symbolprefixlist; |
458 | while (afptr->name) | |
459 | { | |
460 | if (strncmp (n, afptr->name, afptr->len) == 0) | |
461 | return 0; | |
775cabad | 462 | |
b7a26f91 | 463 | afptr++; |
b044cda1 CW |
464 | } |
465 | ||
775cabad NC |
466 | /* Finally, exclude symbols ending with ... */ |
467 | len = strlen (n); | |
468 | afptr = autofilter_symbolsuffixlist; | |
469 | while (afptr->name) | |
470 | { | |
b7a26f91 | 471 | if ((len >= afptr->len) |
775cabad | 472 | /* Add 1 to insure match with trailing '\0'. */ |
b7a26f91 KH |
473 | && strncmp (n + len - afptr->len, afptr->name, |
474 | afptr->len + 1) == 0) | |
775cabad NC |
475 | return 0; |
476 | ||
b7a26f91 | 477 | afptr++; |
775cabad | 478 | } |
252b5132 | 479 | } |
775cabad | 480 | |
252b5132 | 481 | for (ex = excludes; ex; ex = ex->next) |
70b0be79 CF |
482 | { |
483 | if (ex->type == 1) /* exclude-libs */ | |
484 | { | |
485 | if (libname | |
486 | && ((strcmp (libname, ex->string) == 0) | |
487 | || (strcasecmp ("ALL", ex->string) == 0))) | |
488 | return 0; | |
489 | } | |
490 | else if (strcmp (n, ex->string) == 0) | |
658957db | 491 | return 0; |
70b0be79 | 492 | } |
775cabad | 493 | |
252b5132 RH |
494 | return 1; |
495 | } | |
496 | ||
497 | static void | |
1579bae1 | 498 | process_def_file (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
252b5132 RH |
499 | { |
500 | int i, j; | |
501 | struct bfd_link_hash_entry *blhe; | |
502 | bfd *b; | |
503 | struct sec *s; | |
d643799d | 504 | def_file_export *e = 0; |
252b5132 RH |
505 | |
506 | if (!pe_def_file) | |
507 | pe_def_file = def_file_empty (); | |
508 | ||
509 | /* First, run around to all the objects looking for the .drectve | |
86b1cc60 | 510 | sections, and push those into the def file too. */ |
252b5132 RH |
511 | for (b = info->input_bfds; b; b = b->link_next) |
512 | { | |
513 | s = bfd_get_section_by_name (b, ".drectve"); | |
514 | if (s) | |
515 | { | |
516 | int size = bfd_get_section_size_before_reloc (s); | |
517 | char *buf = xmalloc (size); | |
775cabad | 518 | |
252b5132 RH |
519 | bfd_get_section_contents (b, s, buf, 0, size); |
520 | def_file_add_directive (pe_def_file, buf, size); | |
521 | free (buf); | |
522 | } | |
523 | } | |
524 | ||
2b817be1 NC |
525 | /* If we are not building a DLL, when there are no exports |
526 | we do not build an export table at all. */ | |
527 | if (!pe_dll_export_everything && pe_def_file->num_exports == 0 | |
1579bae1 | 528 | && !info->shared) |
2b817be1 NC |
529 | return; |
530 | ||
86b1cc60 | 531 | /* Now, maybe export everything else the default way. */ |
252b5132 RH |
532 | if (pe_dll_export_everything || pe_def_file->num_exports == 0) |
533 | { | |
534 | for (b = info->input_bfds; b; b = b->link_next) | |
535 | { | |
536 | asymbol **symbols; | |
537 | int nsyms, symsize; | |
538 | ||
539 | symsize = bfd_get_symtab_upper_bound (b); | |
1579bae1 | 540 | symbols = xmalloc (symsize); |
252b5132 RH |
541 | nsyms = bfd_canonicalize_symtab (b, symbols); |
542 | ||
543 | for (j = 0; j < nsyms; j++) | |
544 | { | |
d643799d | 545 | /* We should export symbols which are either global or not |
1579bae1 AM |
546 | anything at all. (.bss data is the latter) |
547 | We should not export undefined symbols. */ | |
b044cda1 CW |
548 | if (symbols[j]->section != &bfd_und_section |
549 | && ((symbols[j]->flags & BSF_GLOBAL) | |
550 | || (symbols[j]->flags == BFD_FORT_COMM_DEFAULT_VALUE))) | |
252b5132 RH |
551 | { |
552 | const char *sn = symbols[j]->name; | |
b044cda1 | 553 | |
775cabad | 554 | /* We should not re-export imported stuff. */ |
b044cda1 | 555 | { |
1579bae1 | 556 | char *name = xmalloc (strlen (sn) + 2 + 6); |
b044cda1 | 557 | sprintf (name, "%s%s", U("_imp_"), sn); |
775cabad | 558 | |
b044cda1 | 559 | blhe = bfd_link_hash_lookup (info->hash, name, |
b34976b6 | 560 | FALSE, FALSE, FALSE); |
b044cda1 CW |
561 | free (name); |
562 | ||
b7a26f91 | 563 | if (blhe && blhe->type == bfd_link_hash_defined) |
b044cda1 CW |
564 | continue; |
565 | } | |
566 | ||
252b5132 RH |
567 | if (*sn == '_') |
568 | sn++; | |
775cabad | 569 | |
b044cda1 CW |
570 | if (auto_export (b, pe_def_file, sn)) |
571 | { | |
572 | def_file_export *p; | |
573 | p=def_file_add_export (pe_def_file, sn, 0, -1); | |
775cabad | 574 | /* Fill data flag properly, from dlltool.c. */ |
b044cda1 CW |
575 | p->flag_data = !(symbols[j]->flags & BSF_FUNCTION); |
576 | } | |
252b5132 RH |
577 | } |
578 | } | |
579 | } | |
580 | } | |
581 | ||
582 | #undef NE | |
583 | #define NE pe_def_file->num_exports | |
584 | ||
86b1cc60 | 585 | /* Canonicalize the export list. */ |
252b5132 RH |
586 | if (pe_dll_kill_ats) |
587 | { | |
588 | for (i = 0; i < NE; i++) | |
589 | { | |
590 | if (strchr (pe_def_file->exports[i].name, '@')) | |
591 | { | |
86b1cc60 | 592 | /* This will preserve internal_name, which may have been |
1579bae1 AM |
593 | pointing to the same memory as name, or might not |
594 | have. */ | |
595 | int lead_at = (*pe_def_file->exports[i].name == '@'); | |
c9e38879 | 596 | char *tmp = xstrdup (pe_def_file->exports[i].name + lead_at); |
775cabad | 597 | |
252b5132 RH |
598 | *(strchr (tmp, '@')) = 0; |
599 | pe_def_file->exports[i].name = tmp; | |
600 | } | |
601 | } | |
602 | } | |
603 | ||
604 | if (pe_dll_stdcall_aliases) | |
605 | { | |
606 | for (i = 0; i < NE; i++) | |
607 | { | |
608 | if (strchr (pe_def_file->exports[i].name, '@')) | |
609 | { | |
1579bae1 | 610 | int lead_at = (*pe_def_file->exports[i].name == '@'); |
c9e38879 | 611 | char *tmp = xstrdup (pe_def_file->exports[i].name + lead_at); |
775cabad | 612 | |
252b5132 | 613 | *(strchr (tmp, '@')) = 0; |
b044cda1 | 614 | if (auto_export (NULL, pe_def_file, tmp)) |
252b5132 | 615 | def_file_add_export (pe_def_file, tmp, |
b044cda1 CW |
616 | pe_def_file->exports[i].internal_name, |
617 | -1); | |
252b5132 RH |
618 | else |
619 | free (tmp); | |
620 | } | |
621 | } | |
622 | } | |
623 | ||
86b1cc60 KH |
624 | /* Convenience, but watch out for it changing. */ |
625 | e = pe_def_file->exports; | |
252b5132 | 626 | |
1579bae1 AM |
627 | exported_symbol_offsets = xmalloc (NE * sizeof (bfd_vma)); |
628 | exported_symbol_sections = xmalloc (NE * sizeof (struct sec *)); | |
252b5132 RH |
629 | |
630 | memset (exported_symbol_sections, 0, NE * sizeof (struct sec *)); | |
631 | max_ordinal = 0; | |
632 | min_ordinal = 65536; | |
633 | count_exported = 0; | |
634 | count_exported_byname = 0; | |
635 | count_with_ordinals = 0; | |
636 | ||
1579bae1 AM |
637 | qsort (pe_def_file->exports, NE, sizeof (pe_def_file->exports[0]), |
638 | pe_export_sort); | |
252b5132 RH |
639 | for (i = 0, j = 0; i < NE; i++) |
640 | { | |
641 | if (i > 0 && strcmp (e[i].name, e[i - 1].name) == 0) | |
642 | { | |
870df5dc | 643 | /* This is a duplicate. */ |
252b5132 RH |
644 | if (e[j - 1].ordinal != -1 |
645 | && e[i].ordinal != -1 | |
646 | && e[j - 1].ordinal != e[i].ordinal) | |
647 | { | |
870df5dc NC |
648 | if (pe_dll_warn_dup_exports) |
649 | /* xgettext:c-format */ | |
486e80e2 | 650 | einfo (_("%XError, duplicate EXPORT with ordinals: %s (%d vs %d)\n"), |
870df5dc | 651 | e[j - 1].name, e[j - 1].ordinal, e[i].ordinal); |
252b5132 RH |
652 | } |
653 | else | |
654 | { | |
870df5dc NC |
655 | if (pe_dll_warn_dup_exports) |
656 | /* xgettext:c-format */ | |
657 | einfo (_("Warning, duplicate EXPORT: %s\n"), | |
658 | e[j - 1].name); | |
252b5132 | 659 | } |
775cabad | 660 | |
486e80e2 | 661 | if (e[i].ordinal != -1) |
252b5132 RH |
662 | e[j - 1].ordinal = e[i].ordinal; |
663 | e[j - 1].flag_private |= e[i].flag_private; | |
664 | e[j - 1].flag_constant |= e[i].flag_constant; | |
665 | e[j - 1].flag_noname |= e[i].flag_noname; | |
666 | e[j - 1].flag_data |= e[i].flag_data; | |
667 | } | |
668 | else | |
669 | { | |
670 | if (i != j) | |
671 | e[j] = e[i]; | |
672 | j++; | |
673 | } | |
674 | } | |
675 | pe_def_file->num_exports = j; /* == NE */ | |
676 | ||
677 | for (i = 0; i < NE; i++) | |
678 | { | |
1579bae1 | 679 | char *name; |
775cabad | 680 | |
1579bae1 | 681 | name = xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2); |
c9e38879 NC |
682 | if (pe_details->underscored |
683 | && (*pe_def_file->exports[i].internal_name != '@')) | |
c6c37250 DD |
684 | { |
685 | *name = '_'; | |
686 | strcpy (name + 1, pe_def_file->exports[i].internal_name); | |
687 | } | |
688 | else | |
689 | strcpy (name, pe_def_file->exports[i].internal_name); | |
252b5132 RH |
690 | |
691 | blhe = bfd_link_hash_lookup (info->hash, | |
692 | name, | |
b34976b6 | 693 | FALSE, FALSE, TRUE); |
252b5132 | 694 | |
8a5b676c | 695 | if (blhe |
d643799d | 696 | && (blhe->type == bfd_link_hash_defined |
8a5b676c | 697 | || (blhe->type == bfd_link_hash_common))) |
252b5132 RH |
698 | { |
699 | count_exported++; | |
700 | if (!pe_def_file->exports[i].flag_noname) | |
701 | count_exported_byname++; | |
8a5b676c DD |
702 | |
703 | /* Only fill in the sections. The actual offsets are computed | |
704 | in fill_exported_offsets() after common symbols are laid | |
705 | out. */ | |
d643799d | 706 | if (blhe->type == bfd_link_hash_defined) |
8a5b676c DD |
707 | exported_symbol_sections[i] = blhe->u.def.section; |
708 | else | |
709 | exported_symbol_sections[i] = blhe->u.c.p->section; | |
5cc18311 | 710 | |
252b5132 RH |
711 | if (pe_def_file->exports[i].ordinal != -1) |
712 | { | |
713 | if (max_ordinal < pe_def_file->exports[i].ordinal) | |
714 | max_ordinal = pe_def_file->exports[i].ordinal; | |
715 | if (min_ordinal > pe_def_file->exports[i].ordinal) | |
716 | min_ordinal = pe_def_file->exports[i].ordinal; | |
717 | count_with_ordinals++; | |
718 | } | |
719 | } | |
720 | else if (blhe && blhe->type == bfd_link_hash_undefined) | |
721 | { | |
722 | /* xgettext:c-format */ | |
723 | einfo (_("%XCannot export %s: symbol not defined\n"), | |
724 | pe_def_file->exports[i].internal_name); | |
725 | } | |
726 | else if (blhe) | |
727 | { | |
728 | /* xgettext:c-format */ | |
729 | einfo (_("%XCannot export %s: symbol wrong type (%d vs %d)\n"), | |
730 | pe_def_file->exports[i].internal_name, | |
731 | blhe->type, bfd_link_hash_defined); | |
732 | } | |
733 | else | |
734 | { | |
735 | /* xgettext:c-format */ | |
736 | einfo (_("%XCannot export %s: symbol not found\n"), | |
737 | pe_def_file->exports[i].internal_name); | |
738 | } | |
739 | free (name); | |
740 | } | |
741 | } | |
742 | ||
775cabad | 743 | /* Build the bfd that will contain .edata and .reloc sections. */ |
252b5132 RH |
744 | |
745 | static void | |
1579bae1 | 746 | build_filler_bfd (int include_edata) |
252b5132 RH |
747 | { |
748 | lang_input_statement_type *filler_file; | |
749 | filler_file = lang_add_input_file ("dll stuff", | |
750 | lang_input_file_is_fake_enum, | |
751 | NULL); | |
752 | filler_file->the_bfd = filler_bfd = bfd_create ("dll stuff", output_bfd); | |
753 | if (filler_bfd == NULL | |
754 | || !bfd_set_arch_mach (filler_bfd, | |
755 | bfd_get_arch (output_bfd), | |
756 | bfd_get_mach (output_bfd))) | |
757 | { | |
758 | einfo ("%X%P: can not create BFD %E\n"); | |
759 | return; | |
760 | } | |
761 | ||
c6c37250 | 762 | if (include_edata) |
252b5132 | 763 | { |
c6c37250 DD |
764 | edata_s = bfd_make_section_old_way (filler_bfd, ".edata"); |
765 | if (edata_s == NULL | |
766 | || !bfd_set_section_flags (filler_bfd, edata_s, | |
767 | (SEC_HAS_CONTENTS | |
768 | | SEC_ALLOC | |
769 | | SEC_LOAD | |
770 | | SEC_KEEP | |
771 | | SEC_IN_MEMORY))) | |
772 | { | |
773 | einfo ("%X%P: can not create .edata section: %E\n"); | |
774 | return; | |
775 | } | |
776 | bfd_set_section_size (filler_bfd, edata_s, edata_sz); | |
252b5132 | 777 | } |
252b5132 RH |
778 | |
779 | reloc_s = bfd_make_section_old_way (filler_bfd, ".reloc"); | |
780 | if (reloc_s == NULL | |
781 | || !bfd_set_section_flags (filler_bfd, reloc_s, | |
782 | (SEC_HAS_CONTENTS | |
783 | | SEC_ALLOC | |
784 | | SEC_LOAD | |
785 | | SEC_KEEP | |
786 | | SEC_IN_MEMORY))) | |
787 | { | |
788 | einfo ("%X%P: can not create .reloc section: %E\n"); | |
789 | return; | |
790 | } | |
775cabad | 791 | |
252b5132 RH |
792 | bfd_set_section_size (filler_bfd, reloc_s, 0); |
793 | ||
794 | ldlang_add_file (filler_file); | |
795 | } | |
796 | ||
775cabad | 797 | /* Gather all the exported symbols and build the .edata section. */ |
252b5132 RH |
798 | |
799 | static void | |
1579bae1 | 800 | generate_edata (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) |
252b5132 RH |
801 | { |
802 | int i, next_ordinal; | |
803 | int name_table_size = 0; | |
804 | const char *dlnp; | |
805 | ||
806 | /* First, we need to know how many exported symbols there are, | |
5cc18311 | 807 | and what the range of ordinals is. */ |
252b5132 | 808 | if (pe_def_file->name) |
775cabad | 809 | dll_name = pe_def_file->name; |
252b5132 RH |
810 | else |
811 | { | |
812 | dll_name = abfd->filename; | |
775cabad | 813 | |
252b5132 | 814 | for (dlnp = dll_name; *dlnp; dlnp++) |
775cabad NC |
815 | if (*dlnp == '\\' || *dlnp == '/' || *dlnp == ':') |
816 | dll_name = dlnp + 1; | |
252b5132 RH |
817 | } |
818 | ||
819 | if (count_with_ordinals && max_ordinal > count_exported) | |
820 | { | |
821 | if (min_ordinal > max_ordinal - count_exported + 1) | |
822 | min_ordinal = max_ordinal - count_exported + 1; | |
823 | } | |
824 | else | |
825 | { | |
826 | min_ordinal = 1; | |
827 | max_ordinal = count_exported; | |
828 | } | |
252b5132 | 829 | |
775cabad | 830 | export_table_size = max_ordinal - min_ordinal + 1; |
1579bae1 | 831 | exported_symbols = xmalloc (export_table_size * sizeof (int)); |
252b5132 RH |
832 | for (i = 0; i < export_table_size; i++) |
833 | exported_symbols[i] = -1; | |
834 | ||
86b1cc60 | 835 | /* Now we need to assign ordinals to those that don't have them. */ |
252b5132 RH |
836 | for (i = 0; i < NE; i++) |
837 | { | |
838 | if (exported_symbol_sections[i]) | |
839 | { | |
840 | if (pe_def_file->exports[i].ordinal != -1) | |
841 | { | |
842 | int ei = pe_def_file->exports[i].ordinal - min_ordinal; | |
843 | int pi = exported_symbols[ei]; | |
775cabad | 844 | |
252b5132 RH |
845 | if (pi != -1) |
846 | { | |
847 | /* xgettext:c-format */ | |
486e80e2 | 848 | einfo (_("%XError, ordinal used twice: %d (%s vs %s)\n"), |
252b5132 RH |
849 | pe_def_file->exports[i].ordinal, |
850 | pe_def_file->exports[i].name, | |
851 | pe_def_file->exports[pi].name); | |
852 | } | |
853 | exported_symbols[ei] = i; | |
854 | } | |
855 | name_table_size += strlen (pe_def_file->exports[i].name) + 1; | |
856 | } | |
857 | } | |
858 | ||
859 | next_ordinal = min_ordinal; | |
860 | for (i = 0; i < NE; i++) | |
861 | if (exported_symbol_sections[i]) | |
862 | if (pe_def_file->exports[i].ordinal == -1) | |
863 | { | |
864 | while (exported_symbols[next_ordinal - min_ordinal] != -1) | |
b7a26f91 | 865 | next_ordinal++; |
775cabad | 866 | |
252b5132 RH |
867 | exported_symbols[next_ordinal - min_ordinal] = i; |
868 | pe_def_file->exports[i].ordinal = next_ordinal; | |
869 | } | |
870 | ||
86b1cc60 | 871 | /* OK, now we can allocate some memory. */ |
775cabad NC |
872 | edata_sz = (40 /* directory */ |
873 | + 4 * export_table_size /* addresses */ | |
252b5132 RH |
874 | + 4 * count_exported_byname /* name ptrs */ |
875 | + 2 * count_exported_byname /* ordinals */ | |
876 | + name_table_size + strlen (dll_name) + 1); | |
877 | } | |
878 | ||
8a5b676c DD |
879 | /* Fill the exported symbol offsets. The preliminary work has already |
880 | been done in process_def_file(). */ | |
881 | ||
882 | static void | |
1579bae1 | 883 | fill_exported_offsets (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
8a5b676c | 884 | { |
f0c87f88 | 885 | int i; |
8a5b676c | 886 | struct bfd_link_hash_entry *blhe; |
5cc18311 | 887 | |
8a5b676c DD |
888 | for (i = 0; i < pe_def_file->num_exports; i++) |
889 | { | |
1579bae1 | 890 | char *name; |
775cabad | 891 | |
1579bae1 | 892 | name = xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2); |
c9e38879 | 893 | if (pe_details->underscored |
1579bae1 | 894 | && *pe_def_file->exports[i].internal_name != '@') |
8a5b676c DD |
895 | { |
896 | *name = '_'; | |
897 | strcpy (name + 1, pe_def_file->exports[i].internal_name); | |
898 | } | |
899 | else | |
900 | strcpy (name, pe_def_file->exports[i].internal_name); | |
901 | ||
902 | blhe = bfd_link_hash_lookup (info->hash, | |
903 | name, | |
b34976b6 | 904 | FALSE, FALSE, TRUE); |
8a5b676c | 905 | |
1579bae1 | 906 | if (blhe && blhe->type == bfd_link_hash_defined) |
775cabad NC |
907 | exported_symbol_offsets[i] = blhe->u.def.value; |
908 | ||
8a5b676c DD |
909 | free (name); |
910 | } | |
911 | } | |
912 | ||
252b5132 | 913 | static void |
1579bae1 | 914 | fill_edata (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) |
252b5132 | 915 | { |
03a1c9a7 | 916 | int s, hint; |
252b5132 RH |
917 | unsigned char *edirectory; |
918 | unsigned long *eaddresses; | |
919 | unsigned long *enameptrs; | |
920 | unsigned short *eordinals; | |
921 | unsigned char *enamestr; | |
922 | time_t now; | |
923 | ||
924 | time (&now); | |
925 | ||
1579bae1 | 926 | edata_d = xmalloc (edata_sz); |
252b5132 | 927 | |
86b1cc60 | 928 | /* Note use of array pointer math here. */ |
252b5132 RH |
929 | edirectory = edata_d; |
930 | eaddresses = (unsigned long *) (edata_d + 40); | |
931 | enameptrs = eaddresses + export_table_size; | |
932 | eordinals = (unsigned short *) (enameptrs + count_exported_byname); | |
933 | enamestr = (char *) (eordinals + count_exported_byname); | |
934 | ||
1579bae1 AM |
935 | #define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) \ |
936 | + edata_s->output_section->vma - image_base) | |
252b5132 | 937 | |
c2a94a7a | 938 | memset (edata_d, 0, edata_sz); |
252b5132 RH |
939 | bfd_put_32 (abfd, now, edata_d + 4); |
940 | if (pe_def_file->version_major != -1) | |
941 | { | |
942 | bfd_put_16 (abfd, pe_def_file->version_major, edata_d + 8); | |
943 | bfd_put_16 (abfd, pe_def_file->version_minor, edata_d + 10); | |
944 | } | |
775cabad | 945 | |
252b5132 RH |
946 | bfd_put_32 (abfd, ERVA (enamestr), edata_d + 12); |
947 | strcpy (enamestr, dll_name); | |
948 | enamestr += strlen (enamestr) + 1; | |
949 | bfd_put_32 (abfd, min_ordinal, edata_d + 16); | |
950 | bfd_put_32 (abfd, export_table_size, edata_d + 20); | |
951 | bfd_put_32 (abfd, count_exported_byname, edata_d + 24); | |
952 | bfd_put_32 (abfd, ERVA (eaddresses), edata_d + 28); | |
953 | bfd_put_32 (abfd, ERVA (enameptrs), edata_d + 32); | |
954 | bfd_put_32 (abfd, ERVA (eordinals), edata_d + 36); | |
955 | ||
8a5b676c DD |
956 | fill_exported_offsets (abfd, info); |
957 | ||
03a1c9a7 NC |
958 | /* Ok, now for the filling in part. |
959 | Scan alphabetically - ie the ordering in the exports[] table, | |
960 | rather than by ordinal - the ordering in the exported_symbol[] | |
961 | table. See dlltool.c and: | |
962 | http://sources.redhat.com/ml/binutils/2003-04/msg00379.html | |
1579bae1 | 963 | for more information. */ |
252b5132 | 964 | hint = 0; |
03a1c9a7 | 965 | for (s = 0; s < NE; s++) |
252b5132 | 966 | { |
03a1c9a7 | 967 | if (pe_def_file->exports[s].ordinal != -1) |
252b5132 RH |
968 | { |
969 | struct sec *ssec = exported_symbol_sections[s]; | |
970 | unsigned long srva = (exported_symbol_offsets[s] | |
971 | + ssec->output_section->vma | |
972 | + ssec->output_offset); | |
45b1f63c | 973 | int ord = pe_def_file->exports[s].ordinal; |
252b5132 | 974 | |
45b1f63c DD |
975 | bfd_put_32 (abfd, srva - image_base, |
976 | (void *) (eaddresses + ord - min_ordinal)); | |
775cabad | 977 | |
252b5132 RH |
978 | if (!pe_def_file->exports[s].flag_noname) |
979 | { | |
980 | char *ename = pe_def_file->exports[s].name; | |
03a1c9a7 | 981 | |
252b5132 | 982 | bfd_put_32 (abfd, ERVA (enamestr), (void *) enameptrs); |
45b1f63c | 983 | enameptrs++; |
252b5132 RH |
984 | strcpy (enamestr, ename); |
985 | enamestr += strlen (enamestr) + 1; | |
45b1f63c DD |
986 | bfd_put_16 (abfd, ord - min_ordinal, (void *) eordinals); |
987 | eordinals++; | |
252b5132 RH |
988 | pe_def_file->exports[s].hint = hint++; |
989 | } | |
252b5132 RH |
990 | } |
991 | } | |
992 | } | |
993 | ||
b044cda1 CW |
994 | |
995 | static struct sec *current_sec; | |
996 | ||
997 | void | |
1579bae1 AM |
998 | pe_walk_relocs_of_symbol (struct bfd_link_info *info, |
999 | const char *name, | |
1000 | int (*cb) (arelent *, asection *)) | |
b044cda1 CW |
1001 | { |
1002 | bfd *b; | |
0d888aac | 1003 | asection *s; |
b044cda1 CW |
1004 | |
1005 | for (b = info->input_bfds; b; b = b->link_next) | |
1006 | { | |
775cabad NC |
1007 | asymbol **symbols; |
1008 | int nsyms, symsize; | |
1009 | ||
1010 | symsize = bfd_get_symtab_upper_bound (b); | |
1579bae1 | 1011 | symbols = xmalloc (symsize); |
775cabad | 1012 | nsyms = bfd_canonicalize_symtab (b, symbols); |
b044cda1 CW |
1013 | |
1014 | for (s = b->sections; s; s = s->next) | |
1015 | { | |
775cabad NC |
1016 | arelent **relocs; |
1017 | int relsize, nrelocs, i; | |
b044cda1 CW |
1018 | int flags = bfd_get_section_flags (b, s); |
1019 | ||
775cabad | 1020 | /* Skip discarded linkonce sections. */ |
b044cda1 CW |
1021 | if (flags & SEC_LINK_ONCE |
1022 | && s->output_section == bfd_abs_section_ptr) | |
1023 | continue; | |
1024 | ||
0d888aac | 1025 | current_sec = s; |
b044cda1 | 1026 | |
b044cda1 | 1027 | relsize = bfd_get_reloc_upper_bound (b, s); |
1579bae1 | 1028 | relocs = xmalloc (relsize); |
b044cda1 CW |
1029 | nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols); |
1030 | ||
1031 | for (i = 0; i < nrelocs; i++) | |
1032 | { | |
1033 | struct symbol_cache_entry *sym = *relocs[i]->sym_ptr_ptr; | |
775cabad NC |
1034 | |
1035 | if (!strcmp (name, sym->name)) | |
1036 | cb (relocs[i], s); | |
b044cda1 | 1037 | } |
775cabad | 1038 | |
b044cda1 | 1039 | free (relocs); |
775cabad | 1040 | |
b044cda1 CW |
1041 | /* Warning: the allocated symbols are remembered in BFD and reused |
1042 | later, so don't free them! */ | |
1043 | /* free (symbols); */ | |
1044 | } | |
1045 | } | |
1046 | } | |
1047 | ||
775cabad | 1048 | /* Gather all the relocations and build the .reloc section. */ |
252b5132 RH |
1049 | |
1050 | static void | |
1579bae1 | 1051 | generate_reloc (bfd *abfd, struct bfd_link_info *info) |
252b5132 RH |
1052 | { |
1053 | ||
86b1cc60 | 1054 | /* For .reloc stuff. */ |
c6c37250 | 1055 | reloc_data_type *reloc_data; |
252b5132 RH |
1056 | int total_relocs = 0; |
1057 | int i; | |
1579bae1 | 1058 | unsigned long sec_page = (unsigned long) -1; |
252b5132 RH |
1059 | unsigned long page_ptr, page_count; |
1060 | int bi; | |
1061 | bfd *b; | |
1062 | struct sec *s; | |
1063 | ||
1064 | total_relocs = 0; | |
1065 | for (b = info->input_bfds; b; b = b->link_next) | |
1066 | for (s = b->sections; s; s = s->next) | |
1067 | total_relocs += s->reloc_count; | |
1068 | ||
1579bae1 | 1069 | reloc_data = xmalloc (total_relocs * sizeof (reloc_data_type)); |
252b5132 RH |
1070 | |
1071 | total_relocs = 0; | |
1072 | bi = 0; | |
1073 | for (bi = 0, b = info->input_bfds; b; bi++, b = b->link_next) | |
1074 | { | |
1075 | arelent **relocs; | |
1076 | int relsize, nrelocs, i; | |
1077 | ||
1078 | for (s = b->sections; s; s = s->next) | |
1079 | { | |
1080 | unsigned long sec_vma = s->output_section->vma + s->output_offset; | |
1081 | asymbol **symbols; | |
1082 | int nsyms, symsize; | |
1083 | ||
86b1cc60 | 1084 | /* If it's not loaded, we don't need to relocate it this way. */ |
252b5132 RH |
1085 | if (!(s->output_section->flags & SEC_LOAD)) |
1086 | continue; | |
1087 | ||
1088 | /* I don't know why there would be a reloc for these, but I've | |
86b1cc60 | 1089 | seen it happen - DJ */ |
252b5132 RH |
1090 | if (s->output_section == &bfd_abs_section) |
1091 | continue; | |
1092 | ||
1093 | if (s->output_section->vma == 0) | |
1094 | { | |
86b1cc60 | 1095 | /* Huh? Shouldn't happen, but punt if it does. */ |
252b5132 RH |
1096 | einfo ("DJ: zero vma section reloc detected: `%s' #%d f=%d\n", |
1097 | s->output_section->name, s->output_section->index, | |
1098 | s->output_section->flags); | |
1099 | continue; | |
1100 | } | |
1101 | ||
1102 | symsize = bfd_get_symtab_upper_bound (b); | |
1579bae1 | 1103 | symbols = xmalloc (symsize); |
252b5132 RH |
1104 | nsyms = bfd_canonicalize_symtab (b, symbols); |
1105 | ||
1106 | relsize = bfd_get_reloc_upper_bound (b, s); | |
1579bae1 | 1107 | relocs = xmalloc (relsize); |
252b5132 RH |
1108 | nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols); |
1109 | ||
1110 | for (i = 0; i < nrelocs; i++) | |
1111 | { | |
b044cda1 | 1112 | if (pe_dll_extra_pe_debug) |
b7a26f91 | 1113 | { |
b044cda1 | 1114 | struct symbol_cache_entry *sym = *relocs[i]->sym_ptr_ptr; |
b7a26f91 | 1115 | printf ("rel: %s\n", sym->name); |
b044cda1 | 1116 | } |
252b5132 | 1117 | if (!relocs[i]->howto->pc_relative |
c6c37250 | 1118 | && relocs[i]->howto->type != pe_details->imagebase_reloc) |
252b5132 | 1119 | { |
c6c37250 DD |
1120 | bfd_vma sym_vma; |
1121 | struct symbol_cache_entry *sym = *relocs[i]->sym_ptr_ptr; | |
775cabad | 1122 | |
c6c37250 DD |
1123 | sym_vma = (relocs[i]->addend |
1124 | + sym->value | |
1125 | + sym->section->vma | |
1126 | + sym->section->output_offset | |
1127 | + sym->section->output_section->vma); | |
1128 | reloc_data[total_relocs].vma = sec_vma + relocs[i]->address; | |
5cc18311 | 1129 | |
344a211f | 1130 | #define BITS_AND_SHIFT(bits, shift) (bits * 1000 | shift) |
5cc18311 | 1131 | |
344a211f NC |
1132 | switch BITS_AND_SHIFT (relocs[i]->howto->bitsize, |
1133 | relocs[i]->howto->rightshift) | |
252b5132 | 1134 | { |
344a211f | 1135 | case BITS_AND_SHIFT (32, 0): |
c6c37250 DD |
1136 | reloc_data[total_relocs].type = 3; |
1137 | total_relocs++; | |
252b5132 | 1138 | break; |
344a211f NC |
1139 | case BITS_AND_SHIFT (16, 0): |
1140 | reloc_data[total_relocs].type = 2; | |
1141 | total_relocs++; | |
1142 | break; | |
1143 | case BITS_AND_SHIFT (16, 16): | |
1144 | reloc_data[total_relocs].type = 4; | |
86b1cc60 KH |
1145 | /* FIXME: we can't know the symbol's right value |
1146 | yet, but we probably can safely assume that | |
1147 | CE will relocate us in 64k blocks, so leaving | |
1148 | it zero is safe. */ | |
344a211f NC |
1149 | reloc_data[total_relocs].extra = 0; |
1150 | total_relocs++; | |
1151 | break; | |
1152 | case BITS_AND_SHIFT (26, 2): | |
1153 | reloc_data[total_relocs].type = 5; | |
1154 | total_relocs++; | |
1155 | break; | |
fea39bcb NC |
1156 | case BITS_AND_SHIFT (24, 2): |
1157 | if (relocs[i]->howto->type == 5) | |
1158 | /* This is an ARM_26D reloc, which is an ARM_26 reloc | |
1159 | that has already been fully processed during a | |
1160 | previous link stage, so ignore it here. */ | |
1161 | break; | |
1162 | /* Fall through. */ | |
252b5132 RH |
1163 | default: |
1164 | /* xgettext:c-format */ | |
1165 | einfo (_("%XError: %d-bit reloc in dll\n"), | |
1166 | relocs[i]->howto->bitsize); | |
1167 | break; | |
1168 | } | |
1169 | } | |
1170 | } | |
1171 | free (relocs); | |
86b1cc60 KH |
1172 | /* Warning: the allocated symbols are remembered in BFD and |
1173 | reused later, so don't free them! */ | |
7bfd51a3 KH |
1174 | #if 0 |
1175 | free (symbol); | |
1176 | #endif | |
252b5132 RH |
1177 | } |
1178 | } | |
1179 | ||
1180 | /* At this point, we have total_relocs relocation addresses in | |
1181 | reloc_addresses, which are all suitable for the .reloc section. | |
5cc18311 | 1182 | We must now create the new sections. */ |
c6c37250 | 1183 | qsort (reloc_data, total_relocs, sizeof (*reloc_data), reloc_sort); |
252b5132 RH |
1184 | |
1185 | for (i = 0; i < total_relocs; i++) | |
1186 | { | |
c6c37250 | 1187 | unsigned long this_page = (reloc_data[i].vma >> 12); |
5cc18311 | 1188 | |
252b5132 RH |
1189 | if (this_page != sec_page) |
1190 | { | |
775cabad | 1191 | reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align. */ |
252b5132 RH |
1192 | reloc_sz += 8; |
1193 | sec_page = this_page; | |
1194 | } | |
5cc18311 | 1195 | |
252b5132 | 1196 | reloc_sz += 2; |
5cc18311 | 1197 | |
344a211f NC |
1198 | if (reloc_data[i].type == 4) |
1199 | reloc_sz += 2; | |
252b5132 | 1200 | } |
b7a26f91 | 1201 | |
775cabad | 1202 | reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align. */ |
1579bae1 AM |
1203 | reloc_d = xmalloc (reloc_sz); |
1204 | sec_page = (unsigned long) -1; | |
252b5132 | 1205 | reloc_sz = 0; |
1579bae1 | 1206 | page_ptr = (unsigned long) -1; |
252b5132 | 1207 | page_count = 0; |
775cabad | 1208 | |
252b5132 RH |
1209 | for (i = 0; i < total_relocs; i++) |
1210 | { | |
c6c37250 | 1211 | unsigned long rva = reloc_data[i].vma - image_base; |
252b5132 | 1212 | unsigned long this_page = (rva & ~0xfff); |
775cabad | 1213 | |
252b5132 RH |
1214 | if (this_page != sec_page) |
1215 | { | |
1216 | while (reloc_sz & 3) | |
1217 | reloc_d[reloc_sz++] = 0; | |
775cabad | 1218 | |
1579bae1 | 1219 | if (page_ptr != (unsigned long) -1) |
252b5132 | 1220 | bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4); |
775cabad | 1221 | |
252b5132 RH |
1222 | bfd_put_32 (abfd, this_page, reloc_d + reloc_sz); |
1223 | page_ptr = reloc_sz; | |
1224 | reloc_sz += 8; | |
1225 | sec_page = this_page; | |
1226 | page_count = 0; | |
1227 | } | |
775cabad | 1228 | |
d643799d | 1229 | bfd_put_16 (abfd, (rva & 0xfff) + (reloc_data[i].type << 12), |
c6c37250 | 1230 | reloc_d + reloc_sz); |
252b5132 | 1231 | reloc_sz += 2; |
775cabad | 1232 | |
c6c37250 DD |
1233 | if (reloc_data[i].type == 4) |
1234 | { | |
1235 | bfd_put_16 (abfd, reloc_data[i].extra, reloc_d + reloc_sz); | |
1236 | reloc_sz += 2; | |
1237 | } | |
775cabad | 1238 | |
252b5132 RH |
1239 | page_count++; |
1240 | } | |
775cabad | 1241 | |
252b5132 RH |
1242 | while (reloc_sz & 3) |
1243 | reloc_d[reloc_sz++] = 0; | |
775cabad | 1244 | |
1579bae1 | 1245 | if (page_ptr != (unsigned long) -1) |
252b5132 | 1246 | bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4); |
775cabad | 1247 | |
252b5132 RH |
1248 | while (reloc_sz < reloc_s->_raw_size) |
1249 | reloc_d[reloc_sz++] = 0; | |
1250 | } | |
1251 | ||
775cabad NC |
1252 | /* Given the exiting def_file structure, print out a .DEF file that |
1253 | corresponds to it. */ | |
252b5132 RH |
1254 | |
1255 | static void | |
1579bae1 | 1256 | quoteput (char *s, FILE *f, int needs_quotes) |
252b5132 RH |
1257 | { |
1258 | char *cp; | |
775cabad | 1259 | |
252b5132 RH |
1260 | for (cp = s; *cp; cp++) |
1261 | if (*cp == '\'' | |
1262 | || *cp == '"' | |
1263 | || *cp == '\\' | |
3882b010 | 1264 | || ISSPACE (*cp) |
252b5132 RH |
1265 | || *cp == ',' |
1266 | || *cp == ';') | |
1267 | needs_quotes = 1; | |
775cabad | 1268 | |
252b5132 RH |
1269 | if (needs_quotes) |
1270 | { | |
1271 | putc ('"', f); | |
775cabad | 1272 | |
252b5132 RH |
1273 | while (*s) |
1274 | { | |
1275 | if (*s == '"' || *s == '\\') | |
1276 | putc ('\\', f); | |
775cabad | 1277 | |
252b5132 RH |
1278 | putc (*s, f); |
1279 | s++; | |
1280 | } | |
775cabad | 1281 | |
252b5132 RH |
1282 | putc ('"', f); |
1283 | } | |
1284 | else | |
1285 | fputs (s, f); | |
1286 | } | |
1287 | ||
1288 | void | |
1579bae1 | 1289 | pe_dll_generate_def_file (const char *pe_out_def_filename) |
252b5132 RH |
1290 | { |
1291 | int i; | |
1292 | FILE *out = fopen (pe_out_def_filename, "w"); | |
775cabad | 1293 | |
252b5132 | 1294 | if (out == NULL) |
775cabad NC |
1295 | /* xgettext:c-format */ |
1296 | einfo (_("%s: Can't open output def file %s\n"), | |
1297 | program_name, pe_out_def_filename); | |
252b5132 RH |
1298 | |
1299 | if (pe_def_file) | |
1300 | { | |
1301 | if (pe_def_file->name) | |
1302 | { | |
1303 | if (pe_def_file->is_dll) | |
1304 | fprintf (out, "LIBRARY "); | |
1305 | else | |
1306 | fprintf (out, "NAME "); | |
775cabad | 1307 | |
252b5132 | 1308 | quoteput (pe_def_file->name, out, 1); |
775cabad | 1309 | |
252b5132 RH |
1310 | if (pe_data (output_bfd)->pe_opthdr.ImageBase) |
1311 | fprintf (out, " BASE=0x%lx", | |
1312 | (unsigned long) pe_data (output_bfd)->pe_opthdr.ImageBase); | |
1313 | fprintf (out, "\n"); | |
1314 | } | |
1315 | ||
1316 | if (pe_def_file->description) | |
1317 | { | |
1318 | fprintf (out, "DESCRIPTION "); | |
1319 | quoteput (pe_def_file->description, out, 1); | |
1320 | fprintf (out, "\n"); | |
1321 | } | |
1322 | ||
1323 | if (pe_def_file->version_minor != -1) | |
1324 | fprintf (out, "VERSION %d.%d\n", pe_def_file->version_major, | |
1325 | pe_def_file->version_minor); | |
1326 | else if (pe_def_file->version_major != -1) | |
1327 | fprintf (out, "VERSION %d\n", pe_def_file->version_major); | |
1328 | ||
1329 | if (pe_def_file->stack_reserve != -1 || pe_def_file->heap_reserve != -1) | |
1330 | fprintf (out, "\n"); | |
1331 | ||
1332 | if (pe_def_file->stack_commit != -1) | |
1333 | fprintf (out, "STACKSIZE 0x%x,0x%x\n", | |
1334 | pe_def_file->stack_reserve, pe_def_file->stack_commit); | |
1335 | else if (pe_def_file->stack_reserve != -1) | |
1336 | fprintf (out, "STACKSIZE 0x%x\n", pe_def_file->stack_reserve); | |
775cabad | 1337 | |
252b5132 RH |
1338 | if (pe_def_file->heap_commit != -1) |
1339 | fprintf (out, "HEAPSIZE 0x%x,0x%x\n", | |
1340 | pe_def_file->heap_reserve, pe_def_file->heap_commit); | |
1341 | else if (pe_def_file->heap_reserve != -1) | |
1342 | fprintf (out, "HEAPSIZE 0x%x\n", pe_def_file->heap_reserve); | |
1343 | ||
1344 | if (pe_def_file->num_section_defs > 0) | |
1345 | { | |
1346 | fprintf (out, "\nSECTIONS\n\n"); | |
775cabad | 1347 | |
252b5132 RH |
1348 | for (i = 0; i < pe_def_file->num_section_defs; i++) |
1349 | { | |
1350 | fprintf (out, " "); | |
1351 | quoteput (pe_def_file->section_defs[i].name, out, 0); | |
775cabad | 1352 | |
252b5132 RH |
1353 | if (pe_def_file->section_defs[i].class) |
1354 | { | |
1355 | fprintf (out, " CLASS "); | |
1356 | quoteput (pe_def_file->section_defs[i].class, out, 0); | |
1357 | } | |
775cabad | 1358 | |
252b5132 RH |
1359 | if (pe_def_file->section_defs[i].flag_read) |
1360 | fprintf (out, " READ"); | |
775cabad | 1361 | |
252b5132 RH |
1362 | if (pe_def_file->section_defs[i].flag_write) |
1363 | fprintf (out, " WRITE"); | |
775cabad | 1364 | |
252b5132 RH |
1365 | if (pe_def_file->section_defs[i].flag_execute) |
1366 | fprintf (out, " EXECUTE"); | |
775cabad | 1367 | |
252b5132 RH |
1368 | if (pe_def_file->section_defs[i].flag_shared) |
1369 | fprintf (out, " SHARED"); | |
775cabad | 1370 | |
252b5132 RH |
1371 | fprintf (out, "\n"); |
1372 | } | |
1373 | } | |
1374 | ||
1375 | if (pe_def_file->num_exports > 0) | |
1376 | { | |
b044cda1 | 1377 | fprintf (out, "EXPORTS\n"); |
775cabad | 1378 | |
252b5132 RH |
1379 | for (i = 0; i < pe_def_file->num_exports; i++) |
1380 | { | |
1381 | def_file_export *e = pe_def_file->exports + i; | |
1382 | fprintf (out, " "); | |
1383 | quoteput (e->name, out, 0); | |
775cabad | 1384 | |
252b5132 RH |
1385 | if (e->internal_name && strcmp (e->internal_name, e->name)) |
1386 | { | |
1387 | fprintf (out, " = "); | |
1388 | quoteput (e->internal_name, out, 0); | |
1389 | } | |
775cabad | 1390 | |
252b5132 RH |
1391 | if (e->ordinal != -1) |
1392 | fprintf (out, " @%d", e->ordinal); | |
775cabad | 1393 | |
252b5132 RH |
1394 | if (e->flag_private) |
1395 | fprintf (out, " PRIVATE"); | |
775cabad | 1396 | |
252b5132 RH |
1397 | if (e->flag_constant) |
1398 | fprintf (out, " CONSTANT"); | |
775cabad | 1399 | |
252b5132 RH |
1400 | if (e->flag_noname) |
1401 | fprintf (out, " NONAME"); | |
775cabad | 1402 | |
252b5132 RH |
1403 | if (e->flag_data) |
1404 | fprintf (out, " DATA"); | |
1405 | ||
1406 | fprintf (out, "\n"); | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | if (pe_def_file->num_imports > 0) | |
1411 | { | |
1412 | fprintf (out, "\nIMPORTS\n\n"); | |
775cabad | 1413 | |
252b5132 RH |
1414 | for (i = 0; i < pe_def_file->num_imports; i++) |
1415 | { | |
1416 | def_file_import *im = pe_def_file->imports + i; | |
1417 | fprintf (out, " "); | |
775cabad | 1418 | |
252b5132 RH |
1419 | if (im->internal_name |
1420 | && (!im->name || strcmp (im->internal_name, im->name))) | |
1421 | { | |
1422 | quoteput (im->internal_name, out, 0); | |
1423 | fprintf (out, " = "); | |
1424 | } | |
775cabad | 1425 | |
252b5132 RH |
1426 | quoteput (im->module->name, out, 0); |
1427 | fprintf (out, "."); | |
775cabad | 1428 | |
252b5132 RH |
1429 | if (im->name) |
1430 | quoteput (im->name, out, 0); | |
1431 | else | |
1432 | fprintf (out, "%d", im->ordinal); | |
775cabad | 1433 | |
252b5132 RH |
1434 | fprintf (out, "\n"); |
1435 | } | |
1436 | } | |
1437 | } | |
1438 | else | |
1439 | fprintf (out, _("; no contents available\n")); | |
1440 | ||
1441 | if (fclose (out) == EOF) | |
775cabad NC |
1442 | /* xgettext:c-format */ |
1443 | einfo (_("%P: Error closing file `%s'\n"), pe_out_def_filename); | |
252b5132 RH |
1444 | } |
1445 | ||
775cabad | 1446 | /* Generate the import library. */ |
252b5132 RH |
1447 | |
1448 | static asymbol **symtab; | |
1449 | static int symptr; | |
1450 | static int tmp_seq; | |
1451 | static const char *dll_filename; | |
1452 | static char *dll_symname; | |
1453 | ||
1454 | #define UNDSEC (asection *) &bfd_und_section | |
1455 | ||
1456 | static asection * | |
1579bae1 | 1457 | quick_section (bfd *abfd, const char *name, int flags, int align) |
252b5132 RH |
1458 | { |
1459 | asection *sec; | |
1460 | asymbol *sym; | |
1461 | ||
1462 | sec = bfd_make_section_old_way (abfd, name); | |
86b1cc60 | 1463 | bfd_set_section_flags (abfd, sec, flags | SEC_ALLOC | SEC_LOAD | SEC_KEEP); |
252b5132 | 1464 | bfd_set_section_alignment (abfd, sec, align); |
86b1cc60 | 1465 | /* Remember to undo this before trying to link internally! */ |
252b5132 RH |
1466 | sec->output_section = sec; |
1467 | ||
1468 | sym = bfd_make_empty_symbol (abfd); | |
1469 | symtab[symptr++] = sym; | |
1470 | sym->name = sec->name; | |
1471 | sym->section = sec; | |
1472 | sym->flags = BSF_LOCAL; | |
1473 | sym->value = 0; | |
1474 | ||
1475 | return sec; | |
1476 | } | |
1477 | ||
1478 | static void | |
1579bae1 AM |
1479 | quick_symbol (bfd *abfd, |
1480 | const char *n1, | |
1481 | const char *n2, | |
1482 | const char *n3, | |
1483 | asection *sec, | |
1484 | int flags, | |
1485 | int addr) | |
252b5132 RH |
1486 | { |
1487 | asymbol *sym; | |
1579bae1 | 1488 | char *name = xmalloc (strlen (n1) + strlen (n2) + strlen (n3) + 1); |
775cabad | 1489 | |
252b5132 RH |
1490 | strcpy (name, n1); |
1491 | strcat (name, n2); | |
1492 | strcat (name, n3); | |
1493 | sym = bfd_make_empty_symbol (abfd); | |
1494 | sym->name = name; | |
1495 | sym->section = sec; | |
1496 | sym->flags = flags; | |
1497 | sym->value = addr; | |
1498 | symtab[symptr++] = sym; | |
1499 | } | |
1500 | ||
1501 | static arelent *reltab = 0; | |
1502 | static int relcount = 0, relsize = 0; | |
1503 | ||
1504 | static void | |
1579bae1 | 1505 | quick_reloc (bfd *abfd, int address, int which_howto, int symidx) |
252b5132 | 1506 | { |
1579bae1 | 1507 | if (relcount >= relsize - 1) |
252b5132 RH |
1508 | { |
1509 | relsize += 10; | |
1510 | if (reltab) | |
1579bae1 | 1511 | reltab = xrealloc (reltab, relsize * sizeof (arelent)); |
252b5132 | 1512 | else |
1579bae1 | 1513 | reltab = xmalloc (relsize * sizeof (arelent)); |
252b5132 RH |
1514 | } |
1515 | reltab[relcount].address = address; | |
1516 | reltab[relcount].addend = 0; | |
1517 | reltab[relcount].howto = bfd_reloc_type_lookup (abfd, which_howto); | |
1518 | reltab[relcount].sym_ptr_ptr = symtab + symidx; | |
1519 | relcount++; | |
1520 | } | |
1521 | ||
1522 | static void | |
1523 | save_relocs (asection *sec) | |
1524 | { | |
1525 | int i; | |
775cabad | 1526 | |
252b5132 RH |
1527 | sec->relocation = reltab; |
1528 | sec->reloc_count = relcount; | |
1579bae1 | 1529 | sec->orelocation = xmalloc ((relcount + 1) * sizeof (arelent *)); |
d643799d | 1530 | for (i = 0; i < relcount; i++) |
252b5132 RH |
1531 | sec->orelocation[i] = sec->relocation + i; |
1532 | sec->orelocation[relcount] = 0; | |
1533 | sec->flags |= SEC_RELOC; | |
1534 | reltab = 0; | |
1535 | relcount = relsize = 0; | |
1536 | } | |
1537 | ||
775cabad NC |
1538 | /* .section .idata$2 |
1539 | .global __head_my_dll | |
1540 | __head_my_dll: | |
1541 | .rva hname | |
1542 | .long 0 | |
1543 | .long 0 | |
1544 | .rva __my_dll_iname | |
1545 | .rva fthunk | |
b7a26f91 | 1546 | |
775cabad NC |
1547 | .section .idata$5 |
1548 | .long 0 | |
1549 | fthunk: | |
b7a26f91 | 1550 | |
775cabad NC |
1551 | .section .idata$4 |
1552 | .long 0 | |
1553 | hname: */ | |
252b5132 RH |
1554 | |
1555 | static bfd * | |
1579bae1 | 1556 | make_head (bfd *parent) |
252b5132 RH |
1557 | { |
1558 | asection *id2, *id5, *id4; | |
1559 | unsigned char *d2, *d5, *d4; | |
1560 | char *oname; | |
1561 | bfd *abfd; | |
1562 | ||
1579bae1 | 1563 | oname = xmalloc (20); |
252b5132 RH |
1564 | sprintf (oname, "d%06d.o", tmp_seq); |
1565 | tmp_seq++; | |
1566 | ||
1567 | abfd = bfd_create (oname, parent); | |
c6c37250 | 1568 | bfd_find_target (pe_details->object_target, abfd); |
252b5132 RH |
1569 | bfd_make_writable (abfd); |
1570 | ||
1571 | bfd_set_format (abfd, bfd_object); | |
c6c37250 | 1572 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); |
252b5132 RH |
1573 | |
1574 | symptr = 0; | |
1579bae1 | 1575 | symtab = xmalloc (6 * sizeof (asymbol *)); |
252b5132 RH |
1576 | id2 = quick_section (abfd, ".idata$2", SEC_HAS_CONTENTS, 2); |
1577 | id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2); | |
1578 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); | |
d643799d KH |
1579 | quick_symbol (abfd, U ("_head_"), dll_symname, "", id2, BSF_GLOBAL, 0); |
1580 | quick_symbol (abfd, U (""), dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0); | |
c6c37250 DD |
1581 | |
1582 | /* OK, pay attention here. I got confused myself looking back at | |
1583 | it. We create a four-byte section to mark the beginning of the | |
1584 | list, and we include an offset of 4 in the section, so that the | |
1585 | pointer to the list points to the *end* of this section, which is | |
5cc18311 | 1586 | the start of the list of sections from other objects. */ |
252b5132 RH |
1587 | |
1588 | bfd_set_section_size (abfd, id2, 20); | |
1579bae1 | 1589 | d2 = xmalloc (20); |
252b5132 RH |
1590 | id2->contents = d2; |
1591 | memset (d2, 0, 20); | |
775cabad | 1592 | d2[0] = d2[16] = 4; /* Reloc addend. */ |
252b5132 RH |
1593 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 2); |
1594 | quick_reloc (abfd, 12, BFD_RELOC_RVA, 4); | |
1595 | quick_reloc (abfd, 16, BFD_RELOC_RVA, 1); | |
1596 | save_relocs (id2); | |
1597 | ||
1598 | bfd_set_section_size (abfd, id5, 4); | |
1579bae1 | 1599 | d5 = xmalloc (4); |
252b5132 RH |
1600 | id5->contents = d5; |
1601 | memset (d5, 0, 4); | |
1602 | ||
1603 | bfd_set_section_size (abfd, id4, 4); | |
1579bae1 | 1604 | d4 = xmalloc (4); |
252b5132 RH |
1605 | id4->contents = d4; |
1606 | memset (d4, 0, 4); | |
1607 | ||
1608 | bfd_set_symtab (abfd, symtab, symptr); | |
1609 | ||
1610 | bfd_set_section_contents (abfd, id2, d2, 0, 20); | |
1611 | bfd_set_section_contents (abfd, id5, d5, 0, 4); | |
1612 | bfd_set_section_contents (abfd, id4, d4, 0, 4); | |
5cc18311 | 1613 | |
252b5132 RH |
1614 | bfd_make_readable (abfd); |
1615 | return abfd; | |
1616 | } | |
1617 | ||
775cabad NC |
1618 | /* .section .idata$4 |
1619 | .long 0 | |
1620 | .section .idata$5 | |
1621 | .long 0 | |
1622 | .section idata$7 | |
1623 | .global __my_dll_iname | |
1624 | __my_dll_iname: | |
1625 | .asciz "my.dll" */ | |
252b5132 RH |
1626 | |
1627 | static bfd * | |
1579bae1 | 1628 | make_tail (bfd *parent) |
252b5132 RH |
1629 | { |
1630 | asection *id4, *id5, *id7; | |
1631 | unsigned char *d4, *d5, *d7; | |
1632 | int len; | |
1633 | char *oname; | |
1634 | bfd *abfd; | |
1635 | ||
1579bae1 | 1636 | oname = xmalloc (20); |
252b5132 RH |
1637 | sprintf (oname, "d%06d.o", tmp_seq); |
1638 | tmp_seq++; | |
1639 | ||
1640 | abfd = bfd_create (oname, parent); | |
c6c37250 | 1641 | bfd_find_target (pe_details->object_target, abfd); |
252b5132 RH |
1642 | bfd_make_writable (abfd); |
1643 | ||
1644 | bfd_set_format (abfd, bfd_object); | |
c6c37250 | 1645 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); |
252b5132 RH |
1646 | |
1647 | symptr = 0; | |
1579bae1 | 1648 | symtab = xmalloc (5 * sizeof (asymbol *)); |
252b5132 RH |
1649 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); |
1650 | id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2); | |
1651 | id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2); | |
d643799d | 1652 | quick_symbol (abfd, U (""), dll_symname, "_iname", id7, BSF_GLOBAL, 0); |
252b5132 RH |
1653 | |
1654 | bfd_set_section_size (abfd, id4, 4); | |
1579bae1 | 1655 | d4 = xmalloc (4); |
252b5132 RH |
1656 | id4->contents = d4; |
1657 | memset (d4, 0, 4); | |
1658 | ||
1659 | bfd_set_section_size (abfd, id5, 4); | |
1579bae1 | 1660 | d5 = xmalloc (4); |
252b5132 RH |
1661 | id5->contents = d5; |
1662 | memset (d5, 0, 4); | |
1663 | ||
d643799d | 1664 | len = strlen (dll_filename) + 1; |
252b5132 | 1665 | if (len & 1) |
d643799d | 1666 | len++; |
252b5132 | 1667 | bfd_set_section_size (abfd, id7, len); |
1579bae1 | 1668 | d7 = xmalloc (len); |
252b5132 RH |
1669 | id7->contents = d7; |
1670 | strcpy (d7, dll_filename); | |
1671 | ||
1672 | bfd_set_symtab (abfd, symtab, symptr); | |
1673 | ||
1674 | bfd_set_section_contents (abfd, id4, d4, 0, 4); | |
1675 | bfd_set_section_contents (abfd, id5, d5, 0, 4); | |
1676 | bfd_set_section_contents (abfd, id7, d7, 0, len); | |
1677 | ||
1678 | bfd_make_readable (abfd); | |
1679 | return abfd; | |
1680 | } | |
1681 | ||
775cabad NC |
1682 | /* .text |
1683 | .global _function | |
1684 | .global ___imp_function | |
1685 | .global __imp__function | |
1686 | _function: | |
1687 | jmp *__imp__function: | |
b7a26f91 | 1688 | |
775cabad NC |
1689 | .section idata$7 |
1690 | .long __head_my_dll | |
b7a26f91 | 1691 | |
775cabad NC |
1692 | .section .idata$5 |
1693 | ___imp_function: | |
1694 | __imp__function: | |
1695 | iat? | |
1696 | .section .idata$4 | |
1697 | iat? | |
1698 | .section .idata$6 | |
1699 | ID<ordinal>: | |
1700 | .short <hint> | |
1701 | .asciz "function" xlate? (add underscore, kill at) */ | |
1702 | ||
1703 | static unsigned char jmp_ix86_bytes[] = | |
1704 | { | |
252b5132 RH |
1705 | 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 |
1706 | }; | |
1707 | ||
775cabad NC |
1708 | /* _function: |
1709 | mov.l ip+8,r0 | |
1710 | mov.l @r0,r0 | |
1711 | jmp @r0 | |
1712 | nop | |
1713 | .dw __imp_function */ | |
344a211f | 1714 | |
775cabad NC |
1715 | static unsigned char jmp_sh_bytes[] = |
1716 | { | |
344a211f NC |
1717 | 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 |
1718 | }; | |
1719 | ||
775cabad NC |
1720 | /* _function: |
1721 | lui $t0,<high:__imp_function> | |
1722 | lw $t0,<low:__imp_function> | |
1723 | jr $t0 | |
1724 | nop */ | |
344a211f | 1725 | |
775cabad NC |
1726 | static unsigned char jmp_mips_bytes[] = |
1727 | { | |
344a211f NC |
1728 | 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d, |
1729 | 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 | |
1730 | }; | |
252b5132 RH |
1731 | |
1732 | static bfd * | |
1579bae1 | 1733 | make_one (def_file_export *exp, bfd *parent) |
252b5132 RH |
1734 | { |
1735 | asection *tx, *id7, *id5, *id4, *id6; | |
23a87948 | 1736 | unsigned char *td = NULL, *d7, *d5, *d4, *d6 = NULL; |
252b5132 RH |
1737 | int len; |
1738 | char *oname; | |
1739 | bfd *abfd; | |
f0c87f88 NC |
1740 | unsigned char *jmp_bytes = NULL; |
1741 | int jmp_byte_count = 0; | |
c6c37250 DD |
1742 | |
1743 | switch (pe_details->pe_arch) | |
1744 | { | |
1745 | case PE_ARCH_i386: | |
1746 | jmp_bytes = jmp_ix86_bytes; | |
1747 | jmp_byte_count = sizeof (jmp_ix86_bytes); | |
1748 | break; | |
344a211f NC |
1749 | case PE_ARCH_sh: |
1750 | jmp_bytes = jmp_sh_bytes; | |
1751 | jmp_byte_count = sizeof (jmp_sh_bytes); | |
1752 | break; | |
1753 | case PE_ARCH_mips: | |
1754 | jmp_bytes = jmp_mips_bytes; | |
1755 | jmp_byte_count = sizeof (jmp_mips_bytes); | |
1756 | break; | |
775cabad NC |
1757 | default: |
1758 | abort (); | |
c6c37250 | 1759 | } |
252b5132 | 1760 | |
1579bae1 | 1761 | oname = xmalloc (20); |
252b5132 RH |
1762 | sprintf (oname, "d%06d.o", tmp_seq); |
1763 | tmp_seq++; | |
1764 | ||
1765 | abfd = bfd_create (oname, parent); | |
c6c37250 | 1766 | bfd_find_target (pe_details->object_target, abfd); |
252b5132 RH |
1767 | bfd_make_writable (abfd); |
1768 | ||
1769 | bfd_set_format (abfd, bfd_object); | |
c6c37250 | 1770 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); |
252b5132 RH |
1771 | |
1772 | symptr = 0; | |
1579bae1 | 1773 | symtab = xmalloc (11 * sizeof (asymbol *)); |
252b5132 RH |
1774 | tx = quick_section (abfd, ".text", SEC_CODE|SEC_HAS_CONTENTS, 2); |
1775 | id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2); | |
1776 | id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2); | |
1777 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); | |
1778 | id6 = quick_section (abfd, ".idata$6", SEC_HAS_CONTENTS, 2); | |
b34976b6 | 1779 | |
c9e38879 NC |
1780 | if (*exp->internal_name == '@') |
1781 | { | |
1782 | if (! exp->flag_data) | |
1783 | quick_symbol (abfd, "", exp->internal_name, "", tx, BSF_GLOBAL, 0); | |
1579bae1 AM |
1784 | quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC, |
1785 | BSF_GLOBAL, 0); | |
1786 | quick_symbol (abfd, U ("_imp_"), exp->internal_name, "", id5, | |
1787 | BSF_GLOBAL, 0); | |
c9e38879 NC |
1788 | /* Fastcall applies only to functions, |
1789 | so no need for auto-import symbol. */ | |
1790 | } | |
1791 | else | |
1792 | { | |
1793 | if (! exp->flag_data) | |
1579bae1 AM |
1794 | quick_symbol (abfd, U (""), exp->internal_name, "", tx, |
1795 | BSF_GLOBAL, 0); | |
1796 | quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC, | |
1797 | BSF_GLOBAL, 0); | |
1798 | quick_symbol (abfd, U ("_imp__"), exp->internal_name, "", id5, | |
1799 | BSF_GLOBAL, 0); | |
c9e38879 | 1800 | /* Symbol to reference ord/name of imported |
1579bae1 | 1801 | data symbol, used to implement auto-import. */ |
c9e38879 | 1802 | if (exp->flag_data) |
1579bae1 AM |
1803 | quick_symbol (abfd, U("_nm__"), exp->internal_name, "", id6, |
1804 | BSF_GLOBAL,0); | |
c9e38879 | 1805 | } |
870df5dc | 1806 | if (pe_dll_compat_implib) |
1579bae1 AM |
1807 | quick_symbol (abfd, U ("__imp_"), exp->internal_name, "", id5, |
1808 | BSF_GLOBAL, 0); | |
252b5132 | 1809 | |
23a87948 | 1810 | if (! exp->flag_data) |
775cabad NC |
1811 | { |
1812 | bfd_set_section_size (abfd, tx, jmp_byte_count); | |
1579bae1 | 1813 | td = xmalloc (jmp_byte_count); |
775cabad NC |
1814 | tx->contents = td; |
1815 | memcpy (td, jmp_bytes, jmp_byte_count); | |
1816 | ||
1817 | switch (pe_details->pe_arch) | |
1818 | { | |
1819 | case PE_ARCH_i386: | |
1820 | quick_reloc (abfd, 2, BFD_RELOC_32, 2); | |
1821 | break; | |
1822 | case PE_ARCH_sh: | |
1823 | quick_reloc (abfd, 8, BFD_RELOC_32, 2); | |
1824 | break; | |
1825 | case PE_ARCH_mips: | |
1826 | quick_reloc (abfd, 0, BFD_RELOC_HI16_S, 2); | |
1827 | quick_reloc (abfd, 0, BFD_RELOC_LO16, 0); /* MIPS_R_PAIR */ | |
1828 | quick_reloc (abfd, 4, BFD_RELOC_LO16, 2); | |
1829 | break; | |
1830 | default: | |
1831 | abort (); | |
1832 | } | |
1833 | save_relocs (tx); | |
1834 | } | |
252b5132 RH |
1835 | |
1836 | bfd_set_section_size (abfd, id7, 4); | |
1579bae1 | 1837 | d7 = xmalloc (4); |
252b5132 RH |
1838 | id7->contents = d7; |
1839 | memset (d7, 0, 4); | |
1840 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 6); | |
1841 | save_relocs (id7); | |
1842 | ||
1843 | bfd_set_section_size (abfd, id5, 4); | |
1579bae1 | 1844 | d5 = xmalloc (4); |
252b5132 RH |
1845 | id5->contents = d5; |
1846 | memset (d5, 0, 4); | |
775cabad | 1847 | |
252b5132 RH |
1848 | if (exp->flag_noname) |
1849 | { | |
1850 | d5[0] = exp->ordinal; | |
1851 | d5[1] = exp->ordinal >> 8; | |
1852 | d5[3] = 0x80; | |
1853 | } | |
1854 | else | |
1855 | { | |
1856 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 4); | |
1857 | save_relocs (id5); | |
1858 | } | |
1859 | ||
1860 | bfd_set_section_size (abfd, id4, 4); | |
1579bae1 | 1861 | d4 = xmalloc (4); |
252b5132 RH |
1862 | id4->contents = d4; |
1863 | memset (d4, 0, 4); | |
775cabad | 1864 | |
252b5132 RH |
1865 | if (exp->flag_noname) |
1866 | { | |
c2a94a7a DD |
1867 | d4[0] = exp->ordinal; |
1868 | d4[1] = exp->ordinal >> 8; | |
1869 | d4[3] = 0x80; | |
252b5132 RH |
1870 | } |
1871 | else | |
1872 | { | |
1873 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 4); | |
1874 | save_relocs (id4); | |
1875 | } | |
1876 | ||
1877 | if (exp->flag_noname) | |
1878 | { | |
1879 | len = 0; | |
1880 | bfd_set_section_size (abfd, id6, 0); | |
1881 | } | |
1882 | else | |
1883 | { | |
1884 | len = strlen (exp->name) + 3; | |
1885 | if (len & 1) | |
1886 | len++; | |
1887 | bfd_set_section_size (abfd, id6, len); | |
1579bae1 | 1888 | d6 = xmalloc (len); |
252b5132 RH |
1889 | id6->contents = d6; |
1890 | memset (d6, 0, len); | |
1891 | d6[0] = exp->hint & 0xff; | |
1892 | d6[1] = exp->hint >> 8; | |
d643799d | 1893 | strcpy (d6 + 2, exp->name); |
252b5132 RH |
1894 | } |
1895 | ||
1896 | bfd_set_symtab (abfd, symtab, symptr); | |
1897 | ||
c6c37250 | 1898 | bfd_set_section_contents (abfd, tx, td, 0, jmp_byte_count); |
252b5132 RH |
1899 | bfd_set_section_contents (abfd, id7, d7, 0, 4); |
1900 | bfd_set_section_contents (abfd, id5, d5, 0, 4); | |
1901 | bfd_set_section_contents (abfd, id4, d4, 0, 4); | |
1902 | if (!exp->flag_noname) | |
1903 | bfd_set_section_contents (abfd, id6, d6, 0, len); | |
1904 | ||
1905 | bfd_make_readable (abfd); | |
1906 | return abfd; | |
1907 | } | |
1908 | ||
b044cda1 | 1909 | static bfd * |
1579bae1 | 1910 | make_singleton_name_thunk (const char *import, bfd *parent) |
b044cda1 | 1911 | { |
775cabad | 1912 | /* Name thunks go to idata$4. */ |
b044cda1 CW |
1913 | asection *id4; |
1914 | unsigned char *d4; | |
1915 | char *oname; | |
1916 | bfd *abfd; | |
1917 | ||
1579bae1 | 1918 | oname = xmalloc (20); |
b044cda1 CW |
1919 | sprintf (oname, "nmth%06d.o", tmp_seq); |
1920 | tmp_seq++; | |
1921 | ||
1922 | abfd = bfd_create (oname, parent); | |
1923 | bfd_find_target (pe_details->object_target, abfd); | |
1924 | bfd_make_writable (abfd); | |
1925 | ||
1926 | bfd_set_format (abfd, bfd_object); | |
1927 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); | |
1928 | ||
1929 | symptr = 0; | |
1579bae1 | 1930 | symtab = xmalloc (3 * sizeof (asymbol *)); |
b044cda1 CW |
1931 | id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2); |
1932 | quick_symbol (abfd, U ("_nm_thnk_"), import, "", id4, BSF_GLOBAL, 0); | |
1933 | quick_symbol (abfd, U ("_nm_"), import, "", UNDSEC, BSF_GLOBAL, 0); | |
1934 | ||
1935 | bfd_set_section_size (abfd, id4, 8); | |
1579bae1 | 1936 | d4 = xmalloc (4); |
b044cda1 CW |
1937 | id4->contents = d4; |
1938 | memset (d4, 0, 8); | |
1939 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 2); | |
1940 | save_relocs (id4); | |
1941 | ||
1942 | bfd_set_symtab (abfd, symtab, symptr); | |
1943 | ||
1944 | bfd_set_section_contents (abfd, id4, d4, 0, 8); | |
1945 | ||
1946 | bfd_make_readable (abfd); | |
1947 | return abfd; | |
1948 | } | |
1949 | ||
1950 | static char * | |
1579bae1 | 1951 | make_import_fixup_mark (arelent *rel) |
b044cda1 | 1952 | { |
775cabad | 1953 | /* We convert reloc to symbol, for later reference. */ |
b044cda1 CW |
1954 | static int counter; |
1955 | static char *fixup_name = NULL; | |
db09f25b | 1956 | static size_t buffer_len = 0; |
b7a26f91 | 1957 | |
b044cda1 | 1958 | struct symbol_cache_entry *sym = *rel->sym_ptr_ptr; |
b7a26f91 | 1959 | |
b044cda1 | 1960 | bfd *abfd = bfd_asymbol_bfd (sym); |
fe213ce2 | 1961 | struct bfd_link_hash_entry *bh; |
b044cda1 CW |
1962 | |
1963 | if (!fixup_name) | |
1964 | { | |
1579bae1 | 1965 | fixup_name = xmalloc (384); |
b044cda1 CW |
1966 | buffer_len = 384; |
1967 | } | |
1968 | ||
1969 | if (strlen (sym->name) + 25 > buffer_len) | |
b7a26f91 | 1970 | /* Assume 25 chars for "__fu" + counter + "_". If counter is |
b044cda1 | 1971 | bigger than 20 digits long, we've got worse problems than |
775cabad | 1972 | overflowing this buffer... */ |
b044cda1 CW |
1973 | { |
1974 | free (fixup_name); | |
a35bc64f NC |
1975 | /* New buffer size is length of symbol, plus 25, but |
1976 | then rounded up to the nearest multiple of 128. */ | |
b044cda1 | 1977 | buffer_len = ((strlen (sym->name) + 25) + 127) & ~127; |
1579bae1 | 1978 | fixup_name = xmalloc (buffer_len); |
b044cda1 | 1979 | } |
b7a26f91 | 1980 | |
b044cda1 CW |
1981 | sprintf (fixup_name, "__fu%d_%s", counter++, sym->name); |
1982 | ||
fe213ce2 | 1983 | bh = NULL; |
b7a26f91 | 1984 | bfd_coff_link_add_one_symbol (&link_info, abfd, fixup_name, BSF_GLOBAL, |
b044cda1 | 1985 | current_sec, /* sym->section, */ |
b34976b6 | 1986 | rel->address, NULL, TRUE, FALSE, &bh); |
fe213ce2 AM |
1987 | |
1988 | if (0) | |
1989 | { | |
1990 | struct coff_link_hash_entry *myh; | |
1991 | ||
1992 | myh = (struct coff_link_hash_entry *) bh; | |
1993 | printf ("type:%d\n", myh->type); | |
1994 | printf ("%s\n", myh->root.u.def.section->name); | |
1995 | } | |
b044cda1 | 1996 | |
b044cda1 CW |
1997 | return fixup_name; |
1998 | } | |
1999 | ||
775cabad NC |
2000 | /* .section .idata$3 |
2001 | .rva __nm_thnk_SYM (singleton thunk with name of func) | |
2002 | .long 0 | |
2003 | .long 0 | |
2004 | .rva __my_dll_iname (name of dll) | |
2005 | .rva __fuNN_SYM (pointer to reference (address) in text) */ | |
b044cda1 CW |
2006 | |
2007 | static bfd * | |
1579bae1 AM |
2008 | make_import_fixup_entry (const char *name, |
2009 | const char *fixup_name, | |
2010 | const char *dll_symname, | |
2011 | bfd *parent) | |
b044cda1 CW |
2012 | { |
2013 | asection *id3; | |
2014 | unsigned char *d3; | |
2015 | char *oname; | |
2016 | bfd *abfd; | |
2017 | ||
1579bae1 | 2018 | oname = xmalloc (20); |
b044cda1 CW |
2019 | sprintf (oname, "fu%06d.o", tmp_seq); |
2020 | tmp_seq++; | |
2021 | ||
2022 | abfd = bfd_create (oname, parent); | |
2023 | bfd_find_target (pe_details->object_target, abfd); | |
2024 | bfd_make_writable (abfd); | |
2025 | ||
2026 | bfd_set_format (abfd, bfd_object); | |
2027 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); | |
2028 | ||
2029 | symptr = 0; | |
1579bae1 | 2030 | symtab = xmalloc (6 * sizeof (asymbol *)); |
b044cda1 | 2031 | id3 = quick_section (abfd, ".idata$3", SEC_HAS_CONTENTS, 2); |
775cabad | 2032 | |
b7a26f91 KH |
2033 | #if 0 |
2034 | quick_symbol (abfd, U ("_head_"), dll_symname, "", id2, BSF_GLOBAL, 0); | |
775cabad | 2035 | #endif |
b044cda1 CW |
2036 | quick_symbol (abfd, U ("_nm_thnk_"), name, "", UNDSEC, BSF_GLOBAL, 0); |
2037 | quick_symbol (abfd, U (""), dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0); | |
2038 | quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0); | |
2039 | ||
2040 | bfd_set_section_size (abfd, id3, 20); | |
1579bae1 | 2041 | d3 = xmalloc (20); |
b044cda1 CW |
2042 | id3->contents = d3; |
2043 | memset (d3, 0, 20); | |
2044 | ||
2045 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 1); | |
2046 | quick_reloc (abfd, 12, BFD_RELOC_RVA, 2); | |
2047 | quick_reloc (abfd, 16, BFD_RELOC_RVA, 3); | |
2048 | save_relocs (id3); | |
2049 | ||
2050 | bfd_set_symtab (abfd, symtab, symptr); | |
2051 | ||
2052 | bfd_set_section_contents (abfd, id3, d3, 0, 20); | |
2053 | ||
2054 | bfd_make_readable (abfd); | |
2055 | return abfd; | |
2056 | } | |
2057 | ||
2fa9fc65 NC |
2058 | /* .section .rdata_runtime_pseudo_reloc |
2059 | .long addend | |
2060 | .rva __fuNN_SYM (pointer to reference (address) in text) */ | |
2061 | ||
2062 | static bfd * | |
1579bae1 AM |
2063 | make_runtime_pseudo_reloc (const char *name ATTRIBUTE_UNUSED, |
2064 | const char *fixup_name, | |
2065 | int addend, | |
2066 | bfd *parent) | |
2fa9fc65 NC |
2067 | { |
2068 | asection *rt_rel; | |
2069 | unsigned char *rt_rel_d; | |
2070 | char *oname; | |
2071 | bfd *abfd; | |
2072 | ||
1579bae1 | 2073 | oname = xmalloc (20); |
2fa9fc65 NC |
2074 | sprintf (oname, "rtr%06d.o", tmp_seq); |
2075 | tmp_seq++; | |
2076 | ||
2077 | abfd = bfd_create (oname, parent); | |
2078 | bfd_find_target (pe_details->object_target, abfd); | |
2079 | bfd_make_writable (abfd); | |
2080 | ||
2081 | bfd_set_format (abfd, bfd_object); | |
2082 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); | |
2083 | ||
2084 | symptr = 0; | |
1579bae1 AM |
2085 | symtab = xmalloc (2 * sizeof (asymbol *)); |
2086 | rt_rel = quick_section (abfd, ".rdata_runtime_pseudo_reloc", | |
2087 | SEC_HAS_CONTENTS, 2); | |
2fa9fc65 NC |
2088 | |
2089 | quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0); | |
2090 | ||
2091 | bfd_set_section_size (abfd, rt_rel, 8); | |
1579bae1 | 2092 | rt_rel_d = xmalloc (8); |
2fa9fc65 NC |
2093 | rt_rel->contents = rt_rel_d; |
2094 | memset (rt_rel_d, 0, 8); | |
2095 | bfd_put_32 (abfd, addend, rt_rel_d); | |
2096 | ||
2097 | quick_reloc (abfd, 4, BFD_RELOC_RVA, 1); | |
2098 | save_relocs (rt_rel); | |
2099 | ||
2100 | bfd_set_symtab (abfd, symtab, symptr); | |
2101 | ||
2102 | bfd_set_section_contents (abfd, rt_rel, rt_rel_d, 0, 8); | |
2103 | ||
2104 | bfd_make_readable (abfd); | |
2105 | return abfd; | |
2106 | } | |
2107 | ||
2108 | /* .section .rdata | |
a35bc64f | 2109 | .rva __pei386_runtime_relocator */ |
2fa9fc65 NC |
2110 | |
2111 | static bfd * | |
1579bae1 | 2112 | pe_create_runtime_relocator_reference (bfd *parent) |
2fa9fc65 NC |
2113 | { |
2114 | asection *extern_rt_rel; | |
2115 | unsigned char *extern_rt_rel_d; | |
2116 | char *oname; | |
2117 | bfd *abfd; | |
2118 | ||
1579bae1 | 2119 | oname = xmalloc (20); |
2fa9fc65 NC |
2120 | sprintf (oname, "ertr%06d.o", tmp_seq); |
2121 | tmp_seq++; | |
2122 | ||
2123 | abfd = bfd_create (oname, parent); | |
2124 | bfd_find_target (pe_details->object_target, abfd); | |
2125 | bfd_make_writable (abfd); | |
2126 | ||
2127 | bfd_set_format (abfd, bfd_object); | |
2128 | bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0); | |
2129 | ||
2130 | symptr = 0; | |
1579bae1 | 2131 | symtab = xmalloc (2 * sizeof (asymbol *)); |
2fa9fc65 NC |
2132 | extern_rt_rel = quick_section (abfd, ".rdata", SEC_HAS_CONTENTS, 2); |
2133 | ||
1579bae1 AM |
2134 | quick_symbol (abfd, "", "__pei386_runtime_relocator", "", UNDSEC, |
2135 | BSF_NO_FLAGS, 0); | |
2fa9fc65 NC |
2136 | |
2137 | bfd_set_section_size (abfd, extern_rt_rel, 4); | |
1579bae1 | 2138 | extern_rt_rel_d = xmalloc (4); |
2fa9fc65 NC |
2139 | extern_rt_rel->contents = extern_rt_rel_d; |
2140 | ||
2141 | quick_reloc (abfd, 0, BFD_RELOC_RVA, 1); | |
2142 | save_relocs (extern_rt_rel); | |
2143 | ||
2144 | bfd_set_symtab (abfd, symtab, symptr); | |
2145 | ||
2146 | bfd_set_section_contents (abfd, extern_rt_rel, extern_rt_rel_d, 0, 4); | |
2147 | ||
2148 | bfd_make_readable (abfd); | |
2149 | return abfd; | |
2150 | } | |
2151 | ||
b044cda1 | 2152 | void |
1579bae1 | 2153 | pe_create_import_fixup (arelent *rel, asection *s, int addend) |
b044cda1 CW |
2154 | { |
2155 | char buf[300]; | |
2156 | struct symbol_cache_entry *sym = *rel->sym_ptr_ptr; | |
2157 | struct bfd_link_hash_entry *name_thunk_sym; | |
db09f25b | 2158 | const char *name = sym->name; |
b044cda1 | 2159 | char *fixup_name = make_import_fixup_mark (rel); |
2fa9fc65 | 2160 | bfd *b; |
b044cda1 CW |
2161 | |
2162 | sprintf (buf, U ("_nm_thnk_%s"), name); | |
2163 | ||
2164 | name_thunk_sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1); | |
2165 | ||
2166 | if (!name_thunk_sym || name_thunk_sym->type != bfd_link_hash_defined) | |
2167 | { | |
2168 | bfd *b = make_singleton_name_thunk (name, output_bfd); | |
2169 | add_bfd_to_link (b, b->filename, &link_info); | |
2170 | ||
775cabad | 2171 | /* If we ever use autoimport, we have to cast text section writable. */ |
b34976b6 | 2172 | config.text_read_only = FALSE; |
b044cda1 CW |
2173 | } |
2174 | ||
2fa9fc65 NC |
2175 | if (addend == 0 || link_info.pei386_runtime_pseudo_reloc) |
2176 | { | |
2177 | extern char * pe_data_import_dll; | |
2178 | char * dll_symname = pe_data_import_dll ? pe_data_import_dll : "unknown"; | |
aa3d9aba | 2179 | |
2fa9fc65 NC |
2180 | b = make_import_fixup_entry (name, fixup_name, dll_symname, output_bfd); |
2181 | add_bfd_to_link (b, b->filename, &link_info); | |
2182 | } | |
2183 | ||
2184 | if (addend != 0) | |
2185 | { | |
2186 | if (link_info.pei386_runtime_pseudo_reloc) | |
2187 | { | |
2188 | if (pe_dll_extra_pe_debug) | |
2189 | printf ("creating runtime pseudo-reloc entry for %s (addend=%d)\n", | |
2190 | fixup_name, addend); | |
2191 | b = make_runtime_pseudo_reloc (name, fixup_name, addend, output_bfd); | |
2192 | add_bfd_to_link (b, b->filename, &link_info); | |
2193 | ||
2194 | if (runtime_pseudo_relocs_created == 0) | |
2195 | { | |
2196 | b = pe_create_runtime_relocator_reference (output_bfd); | |
2197 | add_bfd_to_link (b, b->filename, &link_info); | |
2198 | } | |
2199 | runtime_pseudo_relocs_created++; | |
b34976b6 | 2200 | } |
2fa9fc65 NC |
2201 | else |
2202 | { | |
2203 | einfo (_("%C: variable '%T' can't be auto-imported. Please read the documentation for ld's --enable-auto-import for details.\n"), | |
2204 | s->owner, s, rel->address, sym->name); | |
2205 | einfo ("%X"); | |
2206 | } | |
2207 | } | |
b044cda1 CW |
2208 | } |
2209 | ||
2210 | ||
252b5132 | 2211 | void |
1579bae1 | 2212 | pe_dll_generate_implib (def_file *def, const char *impfilename) |
252b5132 RH |
2213 | { |
2214 | int i; | |
2215 | bfd *ar_head; | |
2216 | bfd *ar_tail; | |
2217 | bfd *outarch; | |
2218 | bfd *head = 0; | |
2219 | ||
5aaace27 | 2220 | dll_filename = (def->name) ? def->name : dll_name; |
252b5132 | 2221 | dll_symname = xstrdup (dll_filename); |
d643799d | 2222 | for (i = 0; dll_symname[i]; i++) |
3882b010 | 2223 | if (!ISALNUM (dll_symname[i])) |
252b5132 RH |
2224 | dll_symname[i] = '_'; |
2225 | ||
2226 | unlink (impfilename); | |
2227 | ||
2228 | outarch = bfd_openw (impfilename, 0); | |
2229 | ||
2230 | if (!outarch) | |
2231 | { | |
2232 | /* xgettext:c-format */ | |
2233 | einfo (_("%XCan't open .lib file: %s\n"), impfilename); | |
2234 | return; | |
2235 | } | |
2236 | ||
2237 | /* xgettext:c-format */ | |
2238 | einfo (_("Creating library file: %s\n"), impfilename); | |
5cc18311 | 2239 | |
252b5132 RH |
2240 | bfd_set_format (outarch, bfd_archive); |
2241 | outarch->has_armap = 1; | |
2242 | ||
5cc18311 | 2243 | /* Work out a reasonable size of things to put onto one line. */ |
252b5132 | 2244 | ar_head = make_head (outarch); |
252b5132 | 2245 | |
d643799d | 2246 | for (i = 0; i < def->num_exports; i++) |
252b5132 | 2247 | { |
86b1cc60 | 2248 | /* The import library doesn't know about the internal name. */ |
252b5132 RH |
2249 | char *internal = def->exports[i].internal_name; |
2250 | bfd *n; | |
775cabad | 2251 | |
252b5132 | 2252 | def->exports[i].internal_name = def->exports[i].name; |
d643799d | 2253 | n = make_one (def->exports + i, outarch); |
252b5132 RH |
2254 | n->next = head; |
2255 | head = n; | |
2256 | def->exports[i].internal_name = internal; | |
2257 | } | |
2258 | ||
c6c37250 DD |
2259 | ar_tail = make_tail (outarch); |
2260 | ||
2261 | if (ar_head == NULL || ar_tail == NULL) | |
2262 | return; | |
2263 | ||
86b1cc60 | 2264 | /* Now stick them all into the archive. */ |
252b5132 RH |
2265 | ar_head->next = head; |
2266 | ar_tail->next = ar_head; | |
2267 | head = ar_tail; | |
2268 | ||
2269 | if (! bfd_set_archive_head (outarch, head)) | |
2270 | einfo ("%Xbfd_set_archive_head: %s\n", bfd_errmsg (bfd_get_error ())); | |
5cc18311 | 2271 | |
252b5132 RH |
2272 | if (! bfd_close (outarch)) |
2273 | einfo ("%Xbfd_close %s: %s\n", impfilename, bfd_errmsg (bfd_get_error ())); | |
2274 | ||
2275 | while (head != NULL) | |
2276 | { | |
2277 | bfd *n = head->next; | |
2278 | bfd_close (head); | |
2279 | head = n; | |
2280 | } | |
2281 | } | |
2282 | ||
2283 | static void | |
1579bae1 | 2284 | add_bfd_to_link (bfd *abfd, const char *name, struct bfd_link_info *link_info) |
252b5132 RH |
2285 | { |
2286 | lang_input_statement_type *fake_file; | |
775cabad | 2287 | |
252b5132 RH |
2288 | fake_file = lang_add_input_file (name, |
2289 | lang_input_file_is_fake_enum, | |
2290 | NULL); | |
2291 | fake_file->the_bfd = abfd; | |
2292 | ldlang_add_file (fake_file); | |
775cabad | 2293 | |
252b5132 RH |
2294 | if (!bfd_link_add_symbols (abfd, link_info)) |
2295 | einfo ("%Xaddsym %s: %s\n", name, bfd_errmsg (bfd_get_error ())); | |
2296 | } | |
2297 | ||
2298 | void | |
1579bae1 | 2299 | pe_process_import_defs (bfd *output_bfd, struct bfd_link_info *link_info) |
252b5132 RH |
2300 | { |
2301 | def_file_module *module; | |
775cabad | 2302 | |
d643799d | 2303 | pe_dll_id_target (bfd_get_target (output_bfd)); |
252b5132 RH |
2304 | |
2305 | if (!pe_def_file) | |
2306 | return; | |
2307 | ||
2308 | for (module = pe_def_file->modules; module; module = module->next) | |
2309 | { | |
2310 | int i, do_this_dll; | |
2311 | ||
2312 | dll_filename = module->name; | |
2313 | dll_symname = xstrdup (module->name); | |
d643799d | 2314 | for (i = 0; dll_symname[i]; i++) |
3882b010 | 2315 | if (!ISALNUM (dll_symname[i])) |
252b5132 RH |
2316 | dll_symname[i] = '_'; |
2317 | ||
2318 | do_this_dll = 0; | |
2319 | ||
d643799d | 2320 | for (i = 0; i < pe_def_file->num_imports; i++) |
252b5132 RH |
2321 | if (pe_def_file->imports[i].module == module) |
2322 | { | |
2323 | def_file_export exp; | |
2324 | struct bfd_link_hash_entry *blhe; | |
b34976b6 | 2325 | int lead_at = (*pe_def_file->imports[i].internal_name == '@'); |
86b1cc60 | 2326 | /* See if we need this import. */ |
1579bae1 AM |
2327 | size_t len = strlen (pe_def_file->imports[i].internal_name); |
2328 | char *name = xmalloc (len + 2 + 6); | |
c9e38879 NC |
2329 | |
2330 | if (lead_at) | |
1579bae1 AM |
2331 | sprintf (name, "%s%s", "", |
2332 | pe_def_file->imports[i].internal_name); | |
c9e38879 | 2333 | else |
1579bae1 AM |
2334 | sprintf (name, "%s%s",U (""), |
2335 | pe_def_file->imports[i].internal_name); | |
c9e38879 | 2336 | |
252b5132 | 2337 | blhe = bfd_link_hash_lookup (link_info->hash, name, |
b34976b6 | 2338 | FALSE, FALSE, FALSE); |
c9e38879 | 2339 | |
874c8c99 DD |
2340 | if (!blhe || (blhe && blhe->type != bfd_link_hash_undefined)) |
2341 | { | |
c9e38879 NC |
2342 | if (lead_at) |
2343 | sprintf (name, "%s%s", U ("_imp_"), | |
2344 | pe_def_file->imports[i].internal_name); | |
2345 | else | |
2346 | sprintf (name, "%s%s", U ("_imp__"), | |
2347 | pe_def_file->imports[i].internal_name); | |
2348 | ||
874c8c99 | 2349 | blhe = bfd_link_hash_lookup (link_info->hash, name, |
b34976b6 | 2350 | FALSE, FALSE, FALSE); |
874c8c99 | 2351 | } |
252b5132 | 2352 | free (name); |
c9e38879 | 2353 | |
252b5132 RH |
2354 | if (blhe && blhe->type == bfd_link_hash_undefined) |
2355 | { | |
2356 | bfd *one; | |
86b1cc60 | 2357 | /* We do. */ |
252b5132 RH |
2358 | if (!do_this_dll) |
2359 | { | |
2360 | bfd *ar_head = make_head (output_bfd); | |
2361 | add_bfd_to_link (ar_head, ar_head->filename, link_info); | |
2362 | do_this_dll = 1; | |
2363 | } | |
2364 | exp.internal_name = pe_def_file->imports[i].internal_name; | |
2365 | exp.name = pe_def_file->imports[i].name; | |
2366 | exp.ordinal = pe_def_file->imports[i].ordinal; | |
2367 | exp.hint = exp.ordinal >= 0 ? exp.ordinal : 0; | |
2368 | exp.flag_private = 0; | |
2369 | exp.flag_constant = 0; | |
939ba9d0 | 2370 | exp.flag_data = pe_def_file->imports[i].data; |
252b5132 RH |
2371 | exp.flag_noname = exp.name ? 0 : 1; |
2372 | one = make_one (&exp, output_bfd); | |
2373 | add_bfd_to_link (one, one->filename, link_info); | |
2374 | } | |
2375 | } | |
2376 | if (do_this_dll) | |
2377 | { | |
2378 | bfd *ar_tail = make_tail (output_bfd); | |
2379 | add_bfd_to_link (ar_tail, ar_tail->filename, link_info); | |
2380 | } | |
2381 | ||
2382 | free (dll_symname); | |
2383 | } | |
2384 | } | |
2385 | ||
775cabad | 2386 | /* We were handed a *.DLL file. Parse it and turn it into a set of |
b34976b6 AM |
2387 | IMPORTS directives in the def file. Return TRUE if the file was |
2388 | handled, FALSE if not. */ | |
252b5132 RH |
2389 | |
2390 | static unsigned int | |
1579bae1 | 2391 | pe_get16 (bfd *abfd, int where) |
252b5132 RH |
2392 | { |
2393 | unsigned char b[2]; | |
775cabad | 2394 | |
db09f25b AM |
2395 | bfd_seek (abfd, (file_ptr) where, SEEK_SET); |
2396 | bfd_bread (b, (bfd_size_type) 2, abfd); | |
d643799d | 2397 | return b[0] + (b[1] << 8); |
252b5132 RH |
2398 | } |
2399 | ||
2400 | static unsigned int | |
1579bae1 | 2401 | pe_get32 (bfd *abfd, int where) |
252b5132 RH |
2402 | { |
2403 | unsigned char b[4]; | |
775cabad | 2404 | |
db09f25b AM |
2405 | bfd_seek (abfd, (file_ptr) where, SEEK_SET); |
2406 | bfd_bread (b, (bfd_size_type) 4, abfd); | |
d643799d | 2407 | return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24); |
252b5132 RH |
2408 | } |
2409 | ||
2410 | #if 0 /* This is not currently used. */ | |
2411 | ||
2412 | static unsigned int | |
1579bae1 | 2413 | pe_as16 (void *ptr) |
252b5132 RH |
2414 | { |
2415 | unsigned char *b = ptr; | |
775cabad | 2416 | |
d643799d | 2417 | return b[0] + (b[1] << 8); |
252b5132 RH |
2418 | } |
2419 | ||
2420 | #endif | |
2421 | ||
2422 | static unsigned int | |
1579bae1 | 2423 | pe_as32 (void *ptr) |
252b5132 RH |
2424 | { |
2425 | unsigned char *b = ptr; | |
775cabad | 2426 | |
d643799d | 2427 | return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24); |
252b5132 RH |
2428 | } |
2429 | ||
b34976b6 | 2430 | bfd_boolean |
1579bae1 | 2431 | pe_implied_import_dll (const char *filename) |
252b5132 RH |
2432 | { |
2433 | bfd *dll; | |
2434 | unsigned long pe_header_offset, opthdr_ofs, num_entries, i; | |
2435 | unsigned long export_rva, export_size, nsections, secptr, expptr; | |
939ba9d0 | 2436 | unsigned long exp_funcbase; |
252b5132 RH |
2437 | unsigned char *expdata, *erva; |
2438 | unsigned long name_rvas, ordinals, nexp, ordbase; | |
1069dd8d | 2439 | const char *dll_name; |
939ba9d0 NC |
2440 | /* Initialization with start > end guarantees that is_data |
2441 | will not be set by mistake, and avoids compiler warning. */ | |
2442 | unsigned long data_start = 1; | |
2443 | unsigned long data_end = 0; | |
2444 | unsigned long bss_start = 1; | |
2445 | unsigned long bss_end = 0; | |
252b5132 RH |
2446 | |
2447 | /* No, I can't use bfd here. kernel32.dll puts its export table in | |
5cc18311 | 2448 | the middle of the .rdata section. */ |
c6c37250 | 2449 | dll = bfd_openr (filename, pe_details->target_name); |
252b5132 RH |
2450 | if (!dll) |
2451 | { | |
2452 | einfo ("%Xopen %s: %s\n", filename, bfd_errmsg (bfd_get_error ())); | |
b34976b6 | 2453 | return FALSE; |
252b5132 | 2454 | } |
775cabad | 2455 | |
86b1cc60 | 2456 | /* PEI dlls seem to be bfd_objects. */ |
252b5132 RH |
2457 | if (!bfd_check_format (dll, bfd_object)) |
2458 | { | |
2459 | einfo ("%X%s: this doesn't appear to be a DLL\n", filename); | |
b34976b6 | 2460 | return FALSE; |
252b5132 RH |
2461 | } |
2462 | ||
939ba9d0 | 2463 | /* Get pe_header, optional header and numbers of export entries. */ |
252b5132 RH |
2464 | pe_header_offset = pe_get32 (dll, 0x3c); |
2465 | opthdr_ofs = pe_header_offset + 4 + 20; | |
2466 | num_entries = pe_get32 (dll, opthdr_ofs + 92); | |
775cabad NC |
2467 | |
2468 | if (num_entries < 1) /* No exports. */ | |
b34976b6 | 2469 | return FALSE; |
775cabad | 2470 | |
252b5132 RH |
2471 | export_rva = pe_get32 (dll, opthdr_ofs + 96); |
2472 | export_size = pe_get32 (dll, opthdr_ofs + 100); | |
2473 | nsections = pe_get16 (dll, pe_header_offset + 4 + 2); | |
2474 | secptr = (pe_header_offset + 4 + 20 + | |
2475 | pe_get16 (dll, pe_header_offset + 4 + 16)); | |
2476 | expptr = 0; | |
775cabad | 2477 | |
1579bae1 | 2478 | /* Get the rva and size of the export section. */ |
d643799d | 2479 | for (i = 0; i < nsections; i++) |
252b5132 RH |
2480 | { |
2481 | char sname[8]; | |
2482 | unsigned long secptr1 = secptr + 40 * i; | |
2483 | unsigned long vaddr = pe_get32 (dll, secptr1 + 12); | |
2484 | unsigned long vsize = pe_get32 (dll, secptr1 + 16); | |
2485 | unsigned long fptr = pe_get32 (dll, secptr1 + 20); | |
775cabad | 2486 | |
db09f25b AM |
2487 | bfd_seek (dll, (file_ptr) secptr1, SEEK_SET); |
2488 | bfd_bread (sname, (bfd_size_type) 8, dll); | |
775cabad | 2489 | |
d643799d | 2490 | if (vaddr <= export_rva && vaddr + vsize > export_rva) |
252b5132 RH |
2491 | { |
2492 | expptr = fptr + (export_rva - vaddr); | |
2493 | if (export_rva + export_size > vaddr + vsize) | |
2494 | export_size = vsize - (export_rva - vaddr); | |
2495 | break; | |
2496 | } | |
2497 | } | |
2498 | ||
939ba9d0 | 2499 | /* Scan sections and store the base and size of the |
1579bae1 | 2500 | data and bss segments in data/base_start/end. */ |
939ba9d0 NC |
2501 | for (i = 0; i < nsections; i++) |
2502 | { | |
2503 | unsigned long secptr1 = secptr + 40 * i; | |
2504 | unsigned long vsize = pe_get32 (dll, secptr1 + 8); | |
2505 | unsigned long vaddr = pe_get32 (dll, secptr1 + 12); | |
2506 | unsigned long flags = pe_get32 (dll, secptr1 + 36); | |
2507 | char sec_name[9]; | |
2508 | ||
2509 | sec_name[8] = '\0'; | |
2510 | bfd_seek (dll, (file_ptr) secptr1 + 0, SEEK_SET); | |
2511 | bfd_bread (sec_name, (bfd_size_type) 8, dll); | |
2512 | ||
2513 | if (strcmp(sec_name,".data") == 0) | |
2514 | { | |
2515 | data_start = vaddr; | |
2516 | data_end = vaddr + vsize; | |
2517 | ||
2518 | if (pe_dll_extra_pe_debug) | |
2519 | printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n", | |
2520 | __FUNCTION__, sec_name, vaddr, vaddr + vsize, flags); | |
1579bae1 | 2521 | } |
939ba9d0 NC |
2522 | else if (strcmp (sec_name,".bss") == 0) |
2523 | { | |
2524 | bss_start = vaddr; | |
2525 | bss_end = vaddr + vsize; | |
2526 | ||
2527 | if (pe_dll_extra_pe_debug) | |
2528 | printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n", | |
2529 | __FUNCTION__, sec_name, vaddr, vaddr + vsize, flags); | |
2530 | } | |
2531 | } | |
2532 | ||
1579bae1 | 2533 | expdata = xmalloc (export_size); |
db09f25b AM |
2534 | bfd_seek (dll, (file_ptr) expptr, SEEK_SET); |
2535 | bfd_bread (expdata, (bfd_size_type) export_size, dll); | |
252b5132 RH |
2536 | erva = expdata - export_rva; |
2537 | ||
2538 | if (pe_def_file == 0) | |
d643799d | 2539 | pe_def_file = def_file_empty (); |
252b5132 | 2540 | |
d643799d KH |
2541 | nexp = pe_as32 (expdata + 24); |
2542 | name_rvas = pe_as32 (expdata + 32); | |
2543 | ordinals = pe_as32 (expdata + 36); | |
2544 | ordbase = pe_as32 (expdata + 16); | |
939ba9d0 | 2545 | exp_funcbase = pe_as32 (expdata + 28); |
775cabad | 2546 | |
939ba9d0 NC |
2547 | /* Use internal dll name instead of filename |
2548 | to enable symbolic dll linking. */ | |
2549 | dll_name = pe_as32 (expdata + 12) + erva; | |
2550 | ||
a35bc64f NC |
2551 | /* Check to see if the dll has already been added to |
2552 | the definition list and if so return without error. | |
2553 | This avoids multiple symbol definitions. */ | |
2554 | if (def_get_module (pe_def_file, dll_name)) | |
2555 | { | |
2556 | if (pe_dll_extra_pe_debug) | |
2557 | printf ("%s is already loaded\n", dll_name); | |
2558 | return TRUE; | |
2559 | } | |
2560 | ||
939ba9d0 | 2561 | /* Iterate through the list of symbols. */ |
d643799d | 2562 | for (i = 0; i < nexp; i++) |
252b5132 | 2563 | { |
939ba9d0 | 2564 | /* Pointer to the names vector. */ |
d643799d | 2565 | unsigned long name_rva = pe_as32 (erva + name_rvas + i * 4); |
252b5132 | 2566 | def_file_import *imp; |
1579bae1 | 2567 | /* Pointer to the function address vector. */ |
939ba9d0 NC |
2568 | unsigned long func_rva = pe_as32 (erva + exp_funcbase + i * 4); |
2569 | int is_data = 0; | |
2570 | ||
2571 | /* Skip unwanted symbols, which are | |
2572 | exported in buggy auto-import releases. */ | |
2573 | if (strncmp (erva + name_rva, "_nm_", 4) != 0) | |
2574 | { | |
2575 | /* is_data is true if the address is in the data or bss segment. */ | |
2576 | is_data = | |
2577 | (func_rva >= data_start && func_rva < data_end) | |
2578 | || (func_rva >= bss_start && func_rva < bss_end); | |
2579 | ||
2580 | imp = def_file_add_import (pe_def_file, erva + name_rva, | |
2581 | dll_name, i, 0); | |
396a2467 | 2582 | /* Mark symbol type. */ |
939ba9d0 | 2583 | imp->data = is_data; |
1579bae1 | 2584 | |
939ba9d0 NC |
2585 | if (pe_dll_extra_pe_debug) |
2586 | printf ("%s dll-name: %s sym: %s addr: 0x%lx %s\n", | |
2587 | __FUNCTION__, dll_name, erva + name_rva, | |
2588 | func_rva, is_data ? "(data)" : ""); | |
2589 | } | |
252b5132 RH |
2590 | } |
2591 | ||
b34976b6 | 2592 | return TRUE; |
252b5132 RH |
2593 | } |
2594 | ||
775cabad NC |
2595 | /* These are the main functions, called from the emulation. The first |
2596 | is called after the bfds are read, so we can guess at how much space | |
2597 | we need. The second is called after everything is placed, so we | |
2598 | can put the right values in place. */ | |
252b5132 RH |
2599 | |
2600 | void | |
1579bae1 | 2601 | pe_dll_build_sections (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2602 | { |
c6c37250 | 2603 | pe_dll_id_target (bfd_get_target (abfd)); |
252b5132 RH |
2604 | process_def_file (abfd, info); |
2605 | ||
1579bae1 | 2606 | if (pe_def_file->num_exports == 0 && !info->shared) |
2b817be1 NC |
2607 | return; |
2608 | ||
252b5132 | 2609 | generate_edata (abfd, info); |
c6c37250 DD |
2610 | build_filler_bfd (1); |
2611 | } | |
2612 | ||
2613 | void | |
1579bae1 | 2614 | pe_exe_build_sections (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED) |
c6c37250 DD |
2615 | { |
2616 | pe_dll_id_target (bfd_get_target (abfd)); | |
2617 | build_filler_bfd (0); | |
252b5132 RH |
2618 | } |
2619 | ||
2620 | void | |
1579bae1 | 2621 | pe_dll_fill_sections (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2622 | { |
c6c37250 | 2623 | pe_dll_id_target (bfd_get_target (abfd)); |
252b5132 RH |
2624 | image_base = pe_data (abfd)->pe_opthdr.ImageBase; |
2625 | ||
2626 | generate_reloc (abfd, info); | |
2627 | if (reloc_sz > 0) | |
2628 | { | |
2629 | bfd_set_section_size (filler_bfd, reloc_s, reloc_sz); | |
2630 | ||
2631 | /* Resize the sections. */ | |
2632 | lang_size_sections (stat_ptr->head, abs_output_section, | |
1579bae1 | 2633 | &stat_ptr->head, 0, 0, NULL, TRUE); |
252b5132 RH |
2634 | |
2635 | /* Redo special stuff. */ | |
2636 | ldemul_after_allocation (); | |
2637 | ||
2638 | /* Do the assignments again. */ | |
1579bae1 | 2639 | lang_do_assignments (stat_ptr->head, abs_output_section, NULL, 0); |
252b5132 RH |
2640 | } |
2641 | ||
2642 | fill_edata (abfd, info); | |
2643 | ||
2b817be1 NC |
2644 | if (info->shared) |
2645 | pe_data (abfd)->dll = 1; | |
252b5132 RH |
2646 | |
2647 | edata_s->contents = edata_d; | |
2648 | reloc_s->contents = reloc_d; | |
2649 | } | |
c6c37250 DD |
2650 | |
2651 | void | |
1579bae1 | 2652 | pe_exe_fill_sections (bfd *abfd, struct bfd_link_info *info) |
c6c37250 DD |
2653 | { |
2654 | pe_dll_id_target (bfd_get_target (abfd)); | |
2655 | image_base = pe_data (abfd)->pe_opthdr.ImageBase; | |
2656 | ||
2657 | generate_reloc (abfd, info); | |
2658 | if (reloc_sz > 0) | |
2659 | { | |
2660 | bfd_set_section_size (filler_bfd, reloc_s, reloc_sz); | |
2661 | ||
2662 | /* Resize the sections. */ | |
2663 | lang_size_sections (stat_ptr->head, abs_output_section, | |
1579bae1 | 2664 | &stat_ptr->head, 0, 0, NULL, TRUE); |
c6c37250 DD |
2665 | |
2666 | /* Redo special stuff. */ | |
2667 | ldemul_after_allocation (); | |
2668 | ||
2669 | /* Do the assignments again. */ | |
1579bae1 | 2670 | lang_do_assignments (stat_ptr->head, abs_output_section, NULL, 0); |
c6c37250 DD |
2671 | } |
2672 | reloc_s->contents = reloc_d; | |
2673 | } |