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252b5132 | 1 | /* NLM (NetWare Loadable Module) executable support for BFD. |
7898deda | 2 | Copyright 1993, 1994, 1995, 1998, 2000 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | Written by Fred Fish @ Cygnus Support, using ELF support as the | |
5 | template. | |
6 | ||
7 | This file is part of BFD, the Binary File Descriptor library. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "bfd.h" | |
24 | #include "sysdep.h" | |
25 | #include "libbfd.h" | |
26 | #include "libnlm.h" | |
27 | ||
28 | /* The functions in this file do not use the names they appear to use. | |
29 | This file is actually compiled multiple times, once for each size | |
30 | of NLM target we are using. At each size we use a different name, | |
31 | constructed by the macro nlmNAME. For example, the function which | |
32 | is named nlm_symbol_type below is actually named nlm32_symbol_type | |
33 | in the final executable. */ | |
34 | ||
35 | #define Nlm_External_Fixed_Header NlmNAME(External_Fixed_Header) | |
36 | #define Nlm_External_Version_Header NlmNAME(External_Version_Header) | |
37 | #define Nlm_External_Copyright_Header NlmNAME(External_Copyright_Header) | |
38 | #define Nlm_External_Extended_Header NlmNAME(External_Extended_Header) | |
39 | #define Nlm_External_Custom_Header NlmNAME(External_Custom_Header) | |
40 | #define Nlm_External_Cygnus_Ext_Header NlmNAME(External_Cygnus_Ext_Header) | |
41 | ||
42 | #define nlm_symbol_type nlmNAME(symbol_type) | |
43 | #define nlm_get_symtab_upper_bound nlmNAME(get_symtab_upper_bound) | |
44 | #define nlm_get_symtab nlmNAME(get_symtab) | |
45 | #define nlm_make_empty_symbol nlmNAME(make_empty_symbol) | |
46 | #define nlm_print_symbol nlmNAME(print_symbol) | |
47 | #define nlm_get_symbol_info nlmNAME(get_symbol_info) | |
48 | #define nlm_get_reloc_upper_bound nlmNAME(get_reloc_upper_bound) | |
49 | #define nlm_canonicalize_reloc nlmNAME(canonicalize_reloc) | |
50 | #define nlm_object_p nlmNAME(object_p) | |
51 | #define nlm_set_section_contents nlmNAME(set_section_contents) | |
52 | #define nlm_write_object_contents nlmNAME(write_object_contents) | |
53 | ||
54 | #define nlm_swap_fixed_header_in(abfd,src,dst) \ | |
1518639e | 55 | (nlm_swap_fixed_header_in_func(abfd)) (abfd,src,dst) |
252b5132 | 56 | #define nlm_swap_fixed_header_out(abfd,src,dst) \ |
1518639e | 57 | (nlm_swap_fixed_header_out_func(abfd)) (abfd,src,dst) |
252b5132 RH |
58 | |
59 | /* Forward declarations of static functions */ | |
60 | ||
61 | static boolean add_bfd_section | |
62 | PARAMS ((bfd *, char *, file_ptr, bfd_size_type, flagword)); | |
63 | static boolean nlm_swap_variable_header_in | |
64 | PARAMS ((bfd *)); | |
65 | static boolean nlm_swap_variable_header_out | |
66 | PARAMS ((bfd *)); | |
67 | static boolean find_nonzero | |
68 | PARAMS ((PTR, size_t)); | |
69 | static boolean nlm_swap_auxiliary_headers_in | |
70 | PARAMS ((bfd *)); | |
71 | static boolean nlm_swap_auxiliary_headers_out | |
72 | PARAMS ((bfd *)); | |
73 | static boolean nlm_slurp_symbol_table | |
74 | PARAMS ((bfd *)); | |
75 | static boolean nlm_slurp_reloc_fixups | |
76 | PARAMS ((bfd *)); | |
77 | static boolean nlm_compute_section_file_positions | |
78 | PARAMS ((bfd *)); | |
79 | static int nlm_external_reloc_compare | |
80 | PARAMS ((const void *, const void *)); | |
81 | ||
82 | /* Should perhaps use put_offset, put_word, etc. For now, the two versions | |
83 | can be handled by explicitly specifying 32 bits or "the long type". */ | |
84 | #if ARCH_SIZE == 64 | |
85 | #define put_word bfd_h_put_64 | |
86 | #define get_word bfd_h_get_64 | |
87 | #endif | |
88 | #if ARCH_SIZE == 32 | |
89 | #define put_word bfd_h_put_32 | |
90 | #define get_word bfd_h_get_32 | |
91 | #endif | |
92 | ||
93 | const bfd_target * | |
94 | nlm_object_p (abfd) | |
95 | bfd *abfd; | |
96 | { | |
97 | struct nlm_obj_tdata *preserved_tdata = nlm_tdata (abfd); | |
98 | boolean (*backend_object_p) PARAMS ((bfd *)); | |
99 | PTR x_fxdhdr = NULL; | |
100 | Nlm_Internal_Fixed_Header *i_fxdhdrp; | |
101 | struct nlm_obj_tdata *new_tdata = NULL; | |
102 | const char *signature; | |
103 | enum bfd_architecture arch; | |
104 | ||
105 | /* Some NLM formats have a prefix before the standard NLM fixed | |
106 | header. */ | |
107 | backend_object_p = nlm_backend_object_p_func (abfd); | |
108 | if (backend_object_p) | |
109 | { | |
110 | if (!(*backend_object_p) (abfd)) | |
111 | goto got_wrong_format_error; | |
112 | } | |
113 | ||
114 | /* Read in the fixed length portion of the NLM header in external format. */ | |
115 | ||
116 | x_fxdhdr = (PTR) bfd_malloc ((size_t) nlm_fixed_header_size (abfd)); | |
117 | if (x_fxdhdr == NULL) | |
118 | goto got_no_match; | |
119 | ||
120 | if (bfd_read ((PTR) x_fxdhdr, nlm_fixed_header_size (abfd), 1, abfd) != | |
121 | nlm_fixed_header_size (abfd)) | |
122 | { | |
123 | if (bfd_get_error () != bfd_error_system_call) | |
124 | goto got_wrong_format_error; | |
125 | else | |
126 | goto got_no_match; | |
127 | } | |
128 | ||
129 | /* Allocate an instance of the nlm_obj_tdata structure and hook it up to | |
130 | the tdata pointer in the bfd. */ | |
131 | ||
132 | new_tdata = ((struct nlm_obj_tdata *) | |
133 | bfd_zalloc (abfd, sizeof (struct nlm_obj_tdata))); | |
134 | if (new_tdata == NULL) | |
135 | goto got_no_match; | |
136 | ||
137 | nlm_tdata (abfd) = new_tdata; | |
138 | ||
139 | i_fxdhdrp = nlm_fixed_header (abfd); | |
140 | nlm_swap_fixed_header_in (abfd, x_fxdhdr, i_fxdhdrp); | |
141 | free (x_fxdhdr); | |
142 | x_fxdhdr = NULL; | |
143 | ||
144 | /* Check to see if we have an NLM file for this backend by matching | |
1518639e | 145 | the NLM signature. */ |
252b5132 RH |
146 | |
147 | signature = nlm_signature (abfd); | |
148 | if (signature != NULL | |
149 | && *signature != '\0' | |
150 | && strncmp ((char *) i_fxdhdrp->signature, signature, | |
151 | NLM_SIGNATURE_SIZE) != 0) | |
152 | goto got_wrong_format_error; | |
153 | ||
154 | /* There's no supported way to discover the endianess of an NLM, so test for | |
155 | a sane version number after doing byte swapping appropriate for this | |
156 | XVEC. (Hack alert!) */ | |
157 | ||
158 | if (i_fxdhdrp->version > 0xFFFF) | |
159 | goto got_wrong_format_error; | |
160 | ||
161 | /* There's no supported way to check for 32 bit versus 64 bit addresses, | |
162 | so ignore this distinction for now. (FIXME) */ | |
163 | ||
164 | /* Swap in the rest of the required header. */ | |
165 | if (!nlm_swap_variable_header_in (abfd)) | |
166 | { | |
167 | if (bfd_get_error () != bfd_error_system_call) | |
168 | goto got_wrong_format_error; | |
169 | else | |
170 | goto got_no_match; | |
171 | } | |
172 | ||
173 | /* Add the sections supplied by all NLM's, and then read in the | |
174 | auxiliary headers. Reading the auxiliary headers may create | |
175 | additional sections described in the cygnus_ext header. | |
176 | From this point on we assume that we have an NLM, and do not | |
177 | treat errors as indicating the wrong format. */ | |
178 | ||
179 | if (!add_bfd_section (abfd, NLM_CODE_NAME, | |
180 | i_fxdhdrp->codeImageOffset, | |
181 | i_fxdhdrp->codeImageSize, | |
182 | (SEC_CODE | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
183 | | SEC_RELOC)) | |
184 | || !add_bfd_section (abfd, NLM_INITIALIZED_DATA_NAME, | |
185 | i_fxdhdrp->dataImageOffset, | |
186 | i_fxdhdrp->dataImageSize, | |
187 | (SEC_DATA | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
188 | | SEC_RELOC)) | |
189 | || !add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME, | |
190 | (file_ptr) 0, | |
191 | i_fxdhdrp->uninitializedDataSize, | |
192 | SEC_ALLOC)) | |
193 | goto got_no_match; | |
194 | ||
195 | if (!nlm_swap_auxiliary_headers_in (abfd)) | |
196 | goto got_no_match; | |
197 | ||
198 | if (nlm_fixed_header (abfd)->numberOfRelocationFixups != 0 | |
199 | || nlm_fixed_header (abfd)->numberOfExternalReferences != 0) | |
200 | abfd->flags |= HAS_RELOC; | |
201 | if (nlm_fixed_header (abfd)->numberOfPublics != 0 | |
202 | || nlm_fixed_header (abfd)->numberOfDebugRecords != 0 | |
203 | || nlm_fixed_header (abfd)->numberOfExternalReferences != 0) | |
204 | abfd->flags |= HAS_SYMS; | |
205 | ||
206 | arch = nlm_architecture (abfd); | |
207 | if (arch != bfd_arch_unknown) | |
208 | bfd_default_set_arch_mach (abfd, arch, (unsigned long) 0); | |
209 | ||
210 | abfd->flags |= EXEC_P; | |
211 | bfd_get_start_address (abfd) = nlm_fixed_header (abfd)->codeStartOffset; | |
212 | ||
213 | return (abfd->xvec); | |
214 | ||
215 | got_wrong_format_error: | |
216 | bfd_set_error (bfd_error_wrong_format); | |
217 | got_no_match: | |
218 | nlm_tdata (abfd) = preserved_tdata; | |
219 | if (new_tdata != NULL) | |
220 | bfd_release (abfd, new_tdata); | |
221 | if (x_fxdhdr != NULL) | |
222 | free (x_fxdhdr); | |
223 | return (NULL); | |
224 | } | |
225 | ||
1518639e | 226 | /* Add a section to the bfd. */ |
252b5132 RH |
227 | |
228 | static boolean | |
229 | add_bfd_section (abfd, name, offset, size, flags) | |
230 | bfd *abfd; | |
231 | char *name; | |
232 | file_ptr offset; | |
233 | bfd_size_type size; | |
234 | flagword flags; | |
235 | { | |
236 | asection *newsect; | |
237 | ||
238 | newsect = bfd_make_section (abfd, name); | |
239 | if (newsect == NULL) | |
240 | { | |
241 | return (false); | |
242 | } | |
1518639e | 243 | newsect->vma = 0; /* NLM's are relocatable. */ |
252b5132 RH |
244 | newsect->_raw_size = size; |
245 | newsect->filepos = offset; | |
246 | newsect->flags = flags; | |
247 | newsect->alignment_power = bfd_log2 (0); /* FIXME */ | |
248 | return (true); | |
249 | } | |
250 | ||
251 | /* Read and swap in the variable length header. All the fields must | |
1518639e | 252 | exist in the NLM, and must exist in the order they are read here. */ |
252b5132 RH |
253 | |
254 | static boolean | |
255 | nlm_swap_variable_header_in (abfd) | |
256 | bfd *abfd; | |
257 | { | |
258 | unsigned char temp[NLM_TARGET_LONG_SIZE]; | |
259 | ||
1518639e | 260 | /* Read the description length and text members. */ |
252b5132 RH |
261 | |
262 | if (bfd_read ((PTR) & nlm_variable_header (abfd)->descriptionLength, | |
263 | sizeof (nlm_variable_header (abfd)->descriptionLength), | |
264 | 1, abfd) != | |
265 | sizeof (nlm_variable_header (abfd)->descriptionLength)) | |
266 | return (false); | |
267 | if (bfd_read ((PTR) nlm_variable_header (abfd)->descriptionText, | |
268 | nlm_variable_header (abfd)->descriptionLength + 1, | |
269 | 1, abfd) != | |
270 | (bfd_size_type) nlm_variable_header (abfd)->descriptionLength + 1) | |
271 | return (false); | |
272 | ||
1518639e | 273 | /* Read and convert the stackSize field. */ |
252b5132 RH |
274 | |
275 | if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
276 | return (false); | |
277 | nlm_variable_header (abfd)->stackSize = get_word (abfd, (bfd_byte *) temp); | |
278 | ||
1518639e | 279 | /* Read and convert the reserved field. */ |
252b5132 RH |
280 | |
281 | if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
282 | return (false); | |
283 | nlm_variable_header (abfd)->reserved = get_word (abfd, (bfd_byte *) temp); | |
284 | ||
1518639e | 285 | /* Read the oldThreadName field. This field is a fixed length string. */ |
252b5132 RH |
286 | |
287 | if (bfd_read ((PTR) nlm_variable_header (abfd)->oldThreadName, | |
288 | sizeof (nlm_variable_header (abfd)->oldThreadName), | |
289 | 1, abfd) != | |
290 | sizeof (nlm_variable_header (abfd)->oldThreadName)) | |
291 | return (false); | |
292 | ||
1518639e | 293 | /* Read the screen name length and text members. */ |
252b5132 RH |
294 | |
295 | if (bfd_read ((PTR) & nlm_variable_header (abfd)->screenNameLength, | |
296 | sizeof (nlm_variable_header (abfd)->screenNameLength), | |
297 | 1, abfd) != | |
298 | sizeof (nlm_variable_header (abfd)->screenNameLength)) | |
299 | return (false); | |
300 | if (bfd_read ((PTR) nlm_variable_header (abfd)->screenName, | |
301 | nlm_variable_header (abfd)->screenNameLength + 1, | |
302 | 1, abfd) != | |
303 | (bfd_size_type) nlm_variable_header (abfd)->screenNameLength + 1) | |
304 | return (false); | |
305 | ||
1518639e | 306 | /* Read the thread name length and text members. */ |
252b5132 RH |
307 | |
308 | if (bfd_read ((PTR) & nlm_variable_header (abfd)->threadNameLength, | |
309 | sizeof (nlm_variable_header (abfd)->threadNameLength), | |
310 | 1, abfd) != | |
311 | sizeof (nlm_variable_header (abfd)->threadNameLength)) | |
312 | return (false); | |
313 | if (bfd_read ((PTR) nlm_variable_header (abfd)->threadName, | |
314 | nlm_variable_header (abfd)->threadNameLength + 1, | |
315 | 1, abfd) != | |
316 | (bfd_size_type) nlm_variable_header (abfd)->threadNameLength + 1) | |
317 | return (false); | |
318 | return (true); | |
319 | } | |
320 | ||
321 | /* Swap and write out the variable length header. All the fields must | |
322 | exist in the NLM, and must exist in this order. */ | |
323 | ||
324 | static boolean | |
325 | nlm_swap_variable_header_out (abfd) | |
326 | bfd *abfd; | |
327 | { | |
328 | unsigned char temp[NLM_TARGET_LONG_SIZE]; | |
329 | ||
1518639e | 330 | /* Write the description length and text members. */ |
252b5132 RH |
331 | |
332 | if (bfd_write ((PTR) & nlm_variable_header (abfd)->descriptionLength, | |
333 | sizeof (nlm_variable_header (abfd)->descriptionLength), | |
334 | 1, abfd) != | |
335 | sizeof (nlm_variable_header (abfd)->descriptionLength)) | |
336 | return (false); | |
337 | if (bfd_write ((PTR) nlm_variable_header (abfd)->descriptionText, | |
338 | nlm_variable_header (abfd)->descriptionLength + 1, | |
339 | 1, abfd) != | |
340 | (bfd_size_type) nlm_variable_header (abfd)->descriptionLength + 1) | |
341 | return (false); | |
342 | ||
1518639e | 343 | /* Convert and write the stackSize field. */ |
252b5132 RH |
344 | |
345 | put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->stackSize, | |
346 | (bfd_byte *) temp); | |
347 | if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
348 | return (false); | |
349 | ||
1518639e | 350 | /* Convert and write the reserved field. */ |
252b5132 RH |
351 | |
352 | put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->reserved, | |
353 | (bfd_byte *) temp); | |
354 | if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
355 | return (false); | |
356 | ||
1518639e | 357 | /* Write the oldThreadName field. This field is a fixed length string. */ |
252b5132 RH |
358 | |
359 | if (bfd_write ((PTR) nlm_variable_header (abfd)->oldThreadName, | |
360 | sizeof (nlm_variable_header (abfd)->oldThreadName), | |
361 | 1, abfd) != | |
362 | sizeof (nlm_variable_header (abfd)->oldThreadName)) | |
363 | return (false); | |
364 | ||
1518639e | 365 | /* Write the screen name length and text members. */ |
252b5132 RH |
366 | |
367 | if (bfd_write ((PTR) & nlm_variable_header (abfd)->screenNameLength, | |
368 | sizeof (nlm_variable_header (abfd)->screenNameLength), | |
369 | 1, abfd) != | |
370 | sizeof (nlm_variable_header (abfd)->screenNameLength)) | |
371 | return (false); | |
372 | if (bfd_write ((PTR) nlm_variable_header (abfd)->screenName, | |
373 | nlm_variable_header (abfd)->screenNameLength + 1, | |
374 | 1, abfd) != | |
375 | (bfd_size_type) nlm_variable_header (abfd)->screenNameLength + 1) | |
376 | return (false); | |
377 | ||
1518639e | 378 | /* Write the thread name length and text members. */ |
252b5132 RH |
379 | |
380 | if (bfd_write ((PTR) & nlm_variable_header (abfd)->threadNameLength, | |
381 | sizeof (nlm_variable_header (abfd)->threadNameLength), | |
382 | 1, abfd) != | |
383 | sizeof (nlm_variable_header (abfd)->threadNameLength)) | |
384 | return (false); | |
385 | if (bfd_write ((PTR) nlm_variable_header (abfd)->threadName, | |
386 | nlm_variable_header (abfd)->threadNameLength + 1, | |
387 | 1, abfd) != | |
388 | (bfd_size_type) nlm_variable_header (abfd)->threadNameLength + 1) | |
389 | return (false); | |
390 | return (true); | |
391 | } | |
392 | ||
393 | /* Read and swap in the contents of all the auxiliary headers. Because of | |
394 | the braindead design, we have to do strcmps on strings of indeterminate | |
395 | length to figure out what each auxiliary header is. Even worse, we have | |
396 | no way of knowing how many auxiliary headers there are or where the end | |
397 | of the auxiliary headers are, except by finding something that doesn't | |
398 | look like a known auxiliary header. This means that the first new type | |
399 | of auxiliary header added will break all existing tools that don't | |
1518639e | 400 | recognize it. */ |
252b5132 RH |
401 | |
402 | static boolean | |
403 | nlm_swap_auxiliary_headers_in (abfd) | |
404 | bfd *abfd; | |
405 | { | |
406 | char tempstr[16]; | |
407 | long position; | |
408 | ||
409 | for (;;) | |
410 | { | |
411 | position = bfd_tell (abfd); | |
412 | if (bfd_read ((PTR) tempstr, sizeof (tempstr), 1, abfd) != | |
413 | sizeof (tempstr)) | |
414 | return (false); | |
415 | if (bfd_seek (abfd, position, SEEK_SET) == -1) | |
416 | return (false); | |
417 | if (strncmp (tempstr, "VeRsIoN#", 8) == 0) | |
418 | { | |
419 | Nlm_External_Version_Header thdr; | |
420 | if (bfd_read ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
421 | return (false); | |
422 | memcpy (nlm_version_header (abfd)->stamp, thdr.stamp, | |
423 | sizeof (thdr.stamp)); | |
424 | nlm_version_header (abfd)->majorVersion = | |
425 | get_word (abfd, (bfd_byte *) thdr.majorVersion); | |
426 | nlm_version_header (abfd)->minorVersion = | |
427 | get_word (abfd, (bfd_byte *) thdr.minorVersion); | |
428 | nlm_version_header (abfd)->revision = | |
429 | get_word (abfd, (bfd_byte *) thdr.revision); | |
430 | nlm_version_header (abfd)->year = | |
431 | get_word (abfd, (bfd_byte *) thdr.year); | |
432 | nlm_version_header (abfd)->month = | |
433 | get_word (abfd, (bfd_byte *) thdr.month); | |
434 | nlm_version_header (abfd)->day = | |
435 | get_word (abfd, (bfd_byte *) thdr.day); | |
436 | } | |
437 | else if (strncmp (tempstr, "MeSsAgEs", 8) == 0) | |
438 | { | |
439 | Nlm_External_Extended_Header thdr; | |
440 | if (bfd_read ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
441 | return (false); | |
442 | memcpy (nlm_extended_header (abfd)->stamp, thdr.stamp, | |
443 | sizeof (thdr.stamp)); | |
444 | nlm_extended_header (abfd)->languageID = | |
445 | get_word (abfd, (bfd_byte *) thdr.languageID); | |
446 | nlm_extended_header (abfd)->messageFileOffset = | |
447 | get_word (abfd, (bfd_byte *) thdr.messageFileOffset); | |
448 | nlm_extended_header (abfd)->messageFileLength = | |
449 | get_word (abfd, (bfd_byte *) thdr.messageFileLength); | |
450 | nlm_extended_header (abfd)->messageCount = | |
451 | get_word (abfd, (bfd_byte *) thdr.messageCount); | |
452 | nlm_extended_header (abfd)->helpFileOffset = | |
453 | get_word (abfd, (bfd_byte *) thdr.helpFileOffset); | |
454 | nlm_extended_header (abfd)->helpFileLength = | |
455 | get_word (abfd, (bfd_byte *) thdr.helpFileLength); | |
456 | nlm_extended_header (abfd)->RPCDataOffset = | |
457 | get_word (abfd, (bfd_byte *) thdr.RPCDataOffset); | |
458 | nlm_extended_header (abfd)->RPCDataLength = | |
459 | get_word (abfd, (bfd_byte *) thdr.RPCDataLength); | |
460 | nlm_extended_header (abfd)->sharedCodeOffset = | |
461 | get_word (abfd, (bfd_byte *) thdr.sharedCodeOffset); | |
462 | nlm_extended_header (abfd)->sharedCodeLength = | |
463 | get_word (abfd, (bfd_byte *) thdr.sharedCodeLength); | |
464 | nlm_extended_header (abfd)->sharedDataOffset = | |
465 | get_word (abfd, (bfd_byte *) thdr.sharedDataOffset); | |
466 | nlm_extended_header (abfd)->sharedDataLength = | |
467 | get_word (abfd, (bfd_byte *) thdr.sharedDataLength); | |
468 | nlm_extended_header (abfd)->sharedRelocationFixupOffset = | |
469 | get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupOffset); | |
470 | nlm_extended_header (abfd)->sharedRelocationFixupCount = | |
471 | get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupCount); | |
472 | nlm_extended_header (abfd)->sharedExternalReferenceOffset = | |
473 | get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceOffset); | |
474 | nlm_extended_header (abfd)->sharedExternalReferenceCount = | |
475 | get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceCount); | |
476 | nlm_extended_header (abfd)->sharedPublicsOffset = | |
477 | get_word (abfd, (bfd_byte *) thdr.sharedPublicsOffset); | |
478 | nlm_extended_header (abfd)->sharedPublicsCount = | |
479 | get_word (abfd, (bfd_byte *) thdr.sharedPublicsCount); | |
480 | nlm_extended_header (abfd)->sharedDebugRecordOffset = | |
481 | get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordOffset); | |
482 | nlm_extended_header (abfd)->sharedDebugRecordCount = | |
483 | get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordCount); | |
484 | nlm_extended_header (abfd)->SharedInitializationOffset = | |
485 | get_word (abfd, (bfd_byte *) thdr.sharedInitializationOffset); | |
486 | nlm_extended_header (abfd)->SharedExitProcedureOffset = | |
487 | get_word (abfd, (bfd_byte *) thdr.SharedExitProcedureOffset); | |
488 | nlm_extended_header (abfd)->productID = | |
489 | get_word (abfd, (bfd_byte *) thdr.productID); | |
490 | nlm_extended_header (abfd)->reserved0 = | |
491 | get_word (abfd, (bfd_byte *) thdr.reserved0); | |
492 | nlm_extended_header (abfd)->reserved1 = | |
493 | get_word (abfd, (bfd_byte *) thdr.reserved1); | |
494 | nlm_extended_header (abfd)->reserved2 = | |
495 | get_word (abfd, (bfd_byte *) thdr.reserved2); | |
496 | nlm_extended_header (abfd)->reserved3 = | |
497 | get_word (abfd, (bfd_byte *) thdr.reserved3); | |
498 | nlm_extended_header (abfd)->reserved4 = | |
499 | get_word (abfd, (bfd_byte *) thdr.reserved4); | |
500 | nlm_extended_header (abfd)->reserved5 = | |
501 | get_word (abfd, (bfd_byte *) thdr.reserved5); | |
502 | } | |
503 | else if (strncmp (tempstr, "CoPyRiGhT=", 10) == 0) | |
504 | { | |
505 | if (bfd_read ((PTR) nlm_copyright_header (abfd)->stamp, | |
506 | sizeof (nlm_copyright_header (abfd)->stamp), | |
507 | 1, abfd) | |
508 | != sizeof (nlm_copyright_header (abfd)->stamp)) | |
509 | return (false); | |
510 | if (bfd_read ((PTR) & (nlm_copyright_header (abfd) | |
511 | ->copyrightMessageLength), | |
512 | 1, 1, abfd) != 1) | |
513 | return (false); | |
1518639e | 514 | /* The copyright message is a variable length string. */ |
252b5132 RH |
515 | if (bfd_read ((PTR) nlm_copyright_header (abfd)->copyrightMessage, |
516 | nlm_copyright_header (abfd)->copyrightMessageLength + 1, | |
517 | 1, abfd) != | |
518 | ((bfd_size_type) | |
519 | nlm_copyright_header (abfd)->copyrightMessageLength + 1)) | |
520 | return (false); | |
521 | } | |
522 | else if (strncmp (tempstr, "CuStHeAd", 8) == 0) | |
523 | { | |
524 | Nlm_External_Custom_Header thdr; | |
525 | bfd_size_type hdrLength; | |
526 | file_ptr dataOffset; | |
527 | bfd_size_type dataLength; | |
528 | char dataStamp[8]; | |
529 | PTR hdr; | |
530 | ||
531 | /* Read the stamp ("CuStHeAd"). */ | |
532 | if (bfd_read ((PTR) thdr.stamp, 1, sizeof (thdr.stamp), abfd) | |
533 | != sizeof (thdr.stamp)) | |
534 | return false; | |
535 | /* Read the length of this custom header. */ | |
536 | if (bfd_read ((PTR) thdr.length, 1, sizeof (thdr.length), abfd) | |
537 | != sizeof (thdr.length)) | |
538 | return false; | |
539 | hdrLength = get_word (abfd, (bfd_byte *) thdr.length); | |
540 | /* Read further fields if we have them. */ | |
541 | if (hdrLength < NLM_TARGET_LONG_SIZE) | |
542 | dataOffset = 0; | |
543 | else | |
544 | { | |
545 | if (bfd_read ((PTR) thdr.dataOffset, 1, | |
546 | sizeof (thdr.dataOffset), abfd) | |
547 | != sizeof (thdr.dataOffset)) | |
548 | return false; | |
549 | dataOffset = get_word (abfd, (bfd_byte *) thdr.dataOffset); | |
550 | } | |
551 | if (hdrLength < 2 * NLM_TARGET_LONG_SIZE) | |
552 | dataLength = 0; | |
553 | else | |
554 | { | |
555 | if (bfd_read ((PTR) thdr.dataLength, 1, | |
556 | sizeof (thdr.dataLength), abfd) | |
557 | != sizeof (thdr.dataLength)) | |
558 | return false; | |
559 | dataLength = get_word (abfd, (bfd_byte *) thdr.dataLength); | |
560 | } | |
561 | if (hdrLength < 2 * NLM_TARGET_LONG_SIZE + 8) | |
562 | memset (dataStamp, 0, sizeof (dataStamp)); | |
563 | else | |
564 | { | |
565 | if (bfd_read ((PTR) dataStamp, 1, sizeof (dataStamp), abfd) | |
566 | != sizeof (dataStamp)) | |
567 | return false; | |
568 | } | |
569 | ||
570 | /* Read the rest of the header, if any. */ | |
571 | if (hdrLength <= 2 * NLM_TARGET_LONG_SIZE + 8) | |
572 | { | |
573 | hdr = NULL; | |
574 | hdrLength = 0; | |
575 | } | |
576 | else | |
577 | { | |
578 | hdrLength -= 2 * NLM_TARGET_LONG_SIZE + 8; | |
579 | hdr = bfd_alloc (abfd, hdrLength); | |
580 | if (hdr == NULL) | |
581 | return false; | |
582 | if (bfd_read (hdr, 1, hdrLength, abfd) != hdrLength) | |
583 | return false; | |
584 | } | |
585 | ||
586 | /* If we have found a Cygnus header, process it. Otherwise, | |
587 | just save the associated data without trying to interpret | |
588 | it. */ | |
589 | if (strncmp (dataStamp, "CyGnUsEx", 8) == 0) | |
590 | { | |
591 | file_ptr pos; | |
592 | bfd_byte *contents; | |
593 | bfd_byte *p, *pend; | |
594 | ||
595 | BFD_ASSERT (hdrLength == 0 && hdr == NULL); | |
596 | ||
597 | pos = bfd_tell (abfd); | |
598 | if (bfd_seek (abfd, dataOffset, SEEK_SET) != 0) | |
599 | return false; | |
600 | contents = (bfd_byte *) bfd_alloc (abfd, dataLength); | |
601 | if (contents == NULL) | |
602 | return false; | |
603 | if (bfd_read (contents, 1, dataLength, abfd) != dataLength) | |
604 | return false; | |
605 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) | |
606 | return false; | |
607 | ||
608 | memcpy (nlm_cygnus_ext_header (abfd), "CyGnUsEx", 8); | |
609 | nlm_cygnus_ext_header (abfd)->offset = dataOffset; | |
610 | nlm_cygnus_ext_header (abfd)->length = dataLength; | |
611 | ||
612 | /* This data this header points to provides a list of | |
613 | the sections which were in the original object file | |
614 | which was converted to become an NLM. We locate | |
615 | those sections and add them to the BFD. Note that | |
616 | this is likely to create a second .text, .data and | |
617 | .bss section; retrieving the sections by name will | |
618 | get the actual NLM sections, which is what we want to | |
619 | happen. The sections from the original file, which | |
620 | may be subsets of the NLM section, can only be found | |
621 | using bfd_map_over_sections. */ | |
622 | p = contents; | |
623 | pend = p + dataLength; | |
624 | while (p < pend) | |
625 | { | |
626 | char *name; | |
627 | size_t l; | |
628 | file_ptr filepos; | |
629 | bfd_size_type size; | |
630 | asection *newsec; | |
631 | ||
632 | /* The format of this information is | |
633 | null terminated section name | |
634 | zeroes to adjust to 4 byte boundary | |
635 | 4 byte section data file pointer | |
636 | 4 byte section size | |
637 | */ | |
638 | ||
639 | name = (char *) p; | |
640 | l = strlen (name) + 1; | |
641 | l = (l + 3) &~ 3; | |
642 | p += l; | |
643 | filepos = bfd_h_get_32 (abfd, p); | |
644 | p += 4; | |
645 | size = bfd_h_get_32 (abfd, p); | |
646 | p += 4; | |
647 | ||
648 | newsec = bfd_make_section_anyway (abfd, name); | |
649 | if (newsec == (asection *) NULL) | |
650 | return false; | |
651 | newsec->_raw_size = size; | |
652 | if (filepos != 0) | |
653 | { | |
654 | newsec->filepos = filepos; | |
655 | newsec->flags |= SEC_HAS_CONTENTS; | |
656 | } | |
657 | } | |
658 | } | |
659 | else | |
660 | { | |
661 | memcpy (nlm_custom_header (abfd)->stamp, thdr.stamp, | |
662 | sizeof (thdr.stamp)); | |
663 | nlm_custom_header (abfd)->hdrLength = hdrLength; | |
664 | nlm_custom_header (abfd)->dataOffset = dataOffset; | |
665 | nlm_custom_header (abfd)->dataLength = dataLength; | |
666 | memcpy (nlm_custom_header (abfd)->dataStamp, dataStamp, | |
667 | sizeof (dataStamp)); | |
668 | nlm_custom_header (abfd)->hdr = hdr; | |
669 | } | |
670 | } | |
671 | else | |
672 | { | |
673 | break; | |
674 | } | |
675 | } | |
676 | return (true); | |
677 | } | |
678 | ||
679 | /* Return whether there is a non-zero byte in a memory block. */ | |
680 | ||
681 | static boolean | |
682 | find_nonzero (buf, size) | |
683 | PTR buf; | |
684 | size_t size; | |
685 | { | |
686 | char *p = (char *) buf; | |
687 | ||
688 | while (size-- != 0) | |
689 | if (*p++ != 0) | |
690 | return true; | |
691 | return false; | |
692 | } | |
693 | ||
694 | /* Swap out the contents of the auxiliary headers. We create those | |
695 | auxiliary headers which have been set non-zero. We do not require | |
696 | the caller to set up the stamp fields. */ | |
697 | ||
698 | static boolean | |
699 | nlm_swap_auxiliary_headers_out (abfd) | |
700 | bfd *abfd; | |
701 | { | |
702 | /* Write out the version header if there is one. */ | |
703 | if (find_nonzero ((PTR) nlm_version_header (abfd), | |
704 | sizeof (Nlm_Internal_Version_Header))) | |
705 | { | |
706 | Nlm_External_Version_Header thdr; | |
707 | ||
708 | memcpy (thdr.stamp, "VeRsIoN#", 8); | |
709 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->majorVersion, | |
710 | (bfd_byte *) thdr.majorVersion); | |
711 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->minorVersion, | |
712 | (bfd_byte *) thdr.minorVersion); | |
713 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->revision, | |
714 | (bfd_byte *) thdr.revision); | |
715 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->year, | |
716 | (bfd_byte *) thdr.year); | |
717 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->month, | |
718 | (bfd_byte *) thdr.month); | |
719 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->day, | |
720 | (bfd_byte *) thdr.day); | |
721 | if (bfd_write ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
722 | return false; | |
723 | } | |
724 | ||
725 | /* Write out the extended header if there is one. */ | |
726 | if (find_nonzero ((PTR) nlm_extended_header (abfd), | |
727 | sizeof (Nlm_Internal_Extended_Header))) | |
728 | { | |
729 | Nlm_External_Extended_Header thdr; | |
730 | ||
731 | memcpy (thdr.stamp, "MeSsAgEs", 8); | |
732 | put_word (abfd, | |
733 | (bfd_vma) nlm_extended_header (abfd)->languageID, | |
734 | (bfd_byte *) thdr.languageID); | |
735 | put_word (abfd, | |
736 | (bfd_vma) nlm_extended_header (abfd)->messageFileOffset, | |
737 | (bfd_byte *) thdr.messageFileOffset); | |
738 | put_word (abfd, | |
739 | (bfd_vma) nlm_extended_header (abfd)->messageFileLength, | |
740 | (bfd_byte *) thdr.messageFileLength); | |
741 | put_word (abfd, | |
742 | (bfd_vma) nlm_extended_header (abfd)->messageCount, | |
743 | (bfd_byte *) thdr.messageCount); | |
744 | put_word (abfd, | |
745 | (bfd_vma) nlm_extended_header (abfd)->helpFileOffset, | |
746 | (bfd_byte *) thdr.helpFileOffset); | |
747 | put_word (abfd, | |
748 | (bfd_vma) nlm_extended_header (abfd)->helpFileLength, | |
749 | (bfd_byte *) thdr.helpFileLength); | |
750 | put_word (abfd, | |
751 | (bfd_vma) nlm_extended_header (abfd)->RPCDataOffset, | |
752 | (bfd_byte *) thdr.RPCDataOffset); | |
753 | put_word (abfd, | |
754 | (bfd_vma) nlm_extended_header (abfd)->RPCDataLength, | |
755 | (bfd_byte *) thdr.RPCDataLength); | |
756 | put_word (abfd, | |
757 | (bfd_vma) nlm_extended_header (abfd)->sharedCodeOffset, | |
758 | (bfd_byte *) thdr.sharedCodeOffset); | |
759 | put_word (abfd, | |
760 | (bfd_vma) nlm_extended_header (abfd)->sharedCodeLength, | |
761 | (bfd_byte *) thdr.sharedCodeLength); | |
762 | put_word (abfd, | |
763 | (bfd_vma) nlm_extended_header (abfd)->sharedDataOffset, | |
764 | (bfd_byte *) thdr.sharedDataOffset); | |
765 | put_word (abfd, | |
766 | (bfd_vma) nlm_extended_header (abfd)->sharedDataLength, | |
767 | (bfd_byte *) thdr.sharedDataLength); | |
768 | put_word (abfd, | |
769 | (bfd_vma) nlm_extended_header (abfd)->sharedRelocationFixupOffset, | |
770 | (bfd_byte *) thdr.sharedRelocationFixupOffset); | |
771 | put_word (abfd, | |
772 | (bfd_vma) nlm_extended_header (abfd)->sharedRelocationFixupCount, | |
773 | (bfd_byte *) thdr.sharedRelocationFixupCount); | |
774 | put_word (abfd, | |
775 | (bfd_vma) nlm_extended_header (abfd)->sharedExternalReferenceOffset, | |
776 | (bfd_byte *) thdr.sharedExternalReferenceOffset); | |
777 | put_word (abfd, | |
778 | (bfd_vma) nlm_extended_header (abfd)->sharedExternalReferenceCount, | |
779 | (bfd_byte *) thdr.sharedExternalReferenceCount); | |
780 | put_word (abfd, | |
781 | (bfd_vma) nlm_extended_header (abfd)->sharedPublicsOffset, | |
782 | (bfd_byte *) thdr.sharedPublicsOffset); | |
783 | put_word (abfd, | |
784 | (bfd_vma) nlm_extended_header (abfd)->sharedPublicsCount, | |
785 | (bfd_byte *) thdr.sharedPublicsCount); | |
786 | put_word (abfd, | |
787 | (bfd_vma) nlm_extended_header (abfd)->sharedDebugRecordOffset, | |
788 | (bfd_byte *) thdr.sharedDebugRecordOffset); | |
789 | put_word (abfd, | |
790 | (bfd_vma) nlm_extended_header (abfd)->sharedDebugRecordCount, | |
791 | (bfd_byte *) thdr.sharedDebugRecordCount); | |
792 | put_word (abfd, | |
793 | (bfd_vma) nlm_extended_header (abfd)->SharedInitializationOffset, | |
794 | (bfd_byte *) thdr.sharedInitializationOffset); | |
795 | put_word (abfd, | |
796 | (bfd_vma) nlm_extended_header (abfd)->SharedExitProcedureOffset, | |
797 | (bfd_byte *) thdr.SharedExitProcedureOffset); | |
798 | put_word (abfd, | |
799 | (bfd_vma) nlm_extended_header (abfd)->productID, | |
800 | (bfd_byte *) thdr.productID); | |
801 | put_word (abfd, | |
802 | (bfd_vma) nlm_extended_header (abfd)->reserved0, | |
803 | (bfd_byte *) thdr.reserved0); | |
804 | put_word (abfd, | |
805 | (bfd_vma) nlm_extended_header (abfd)->reserved1, | |
806 | (bfd_byte *) thdr.reserved1); | |
807 | put_word (abfd, | |
808 | (bfd_vma) nlm_extended_header (abfd)->reserved2, | |
809 | (bfd_byte *) thdr.reserved2); | |
810 | put_word (abfd, | |
811 | (bfd_vma) nlm_extended_header (abfd)->reserved3, | |
812 | (bfd_byte *) thdr.reserved3); | |
813 | put_word (abfd, | |
814 | (bfd_vma) nlm_extended_header (abfd)->reserved4, | |
815 | (bfd_byte *) thdr.reserved4); | |
816 | put_word (abfd, | |
817 | (bfd_vma) nlm_extended_header (abfd)->reserved5, | |
818 | (bfd_byte *) thdr.reserved5); | |
819 | if (bfd_write ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
820 | return false; | |
821 | } | |
822 | ||
252b5132 RH |
823 | /* Write out the copyright header if there is one. */ |
824 | if (find_nonzero ((PTR) nlm_copyright_header (abfd), | |
825 | sizeof (Nlm_Internal_Copyright_Header))) | |
826 | { | |
827 | Nlm_External_Copyright_Header thdr; | |
828 | ||
829 | memcpy (thdr.stamp, "CoPyRiGhT=", 10); | |
830 | if (bfd_write ((PTR) thdr.stamp, sizeof (thdr.stamp), 1, abfd) | |
831 | != sizeof (thdr.stamp)) | |
832 | return false; | |
833 | thdr.copyrightMessageLength[0] = | |
834 | nlm_copyright_header (abfd)->copyrightMessageLength; | |
835 | if (bfd_write ((PTR) thdr.copyrightMessageLength, 1, 1, abfd) != 1) | |
836 | return false; | |
1518639e | 837 | /* The copyright message is a variable length string. */ |
252b5132 RH |
838 | if (bfd_write ((PTR) nlm_copyright_header (abfd)->copyrightMessage, |
839 | nlm_copyright_header (abfd)->copyrightMessageLength + 1, | |
840 | 1, abfd) != | |
841 | ((bfd_size_type) | |
842 | nlm_copyright_header (abfd)->copyrightMessageLength + 1)) | |
843 | return false; | |
844 | } | |
845 | ||
846 | /* Write out the custom header if there is one. */ | |
847 | if (find_nonzero ((PTR) nlm_custom_header (abfd), | |
848 | sizeof (Nlm_Internal_Custom_Header))) | |
849 | { | |
850 | Nlm_External_Custom_Header thdr; | |
851 | boolean ds; | |
852 | bfd_size_type hdrLength; | |
853 | ||
854 | ds = find_nonzero ((PTR) nlm_custom_header (abfd)->dataStamp, | |
855 | sizeof (nlm_custom_header (abfd)->dataStamp)); | |
856 | memcpy (thdr.stamp, "CuStHeAd", 8); | |
857 | hdrLength = (2 * NLM_TARGET_LONG_SIZE + (ds ? 8 : 0) | |
858 | + nlm_custom_header (abfd)->hdrLength); | |
859 | put_word (abfd, hdrLength, thdr.length); | |
860 | put_word (abfd, (bfd_vma) nlm_custom_header (abfd)->dataOffset, | |
861 | thdr.dataOffset); | |
862 | put_word (abfd, (bfd_vma) nlm_custom_header (abfd)->dataLength, | |
863 | thdr.dataLength); | |
864 | if (! ds) | |
865 | { | |
866 | BFD_ASSERT (nlm_custom_header (abfd)->hdrLength == 0); | |
867 | if (bfd_write ((PTR) &thdr, 1, | |
868 | sizeof (thdr) - sizeof (thdr.dataStamp), abfd) | |
869 | != sizeof (thdr) - sizeof (thdr.dataStamp)) | |
870 | return false; | |
871 | } | |
872 | else | |
873 | { | |
874 | memcpy (thdr.dataStamp, nlm_custom_header (abfd)->dataStamp, | |
875 | sizeof (thdr.dataStamp)); | |
876 | if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
877 | return false; | |
878 | if (bfd_write (nlm_custom_header (abfd)->hdr, 1, | |
879 | nlm_custom_header (abfd)->hdrLength, abfd) | |
880 | != nlm_custom_header (abfd)->hdrLength) | |
881 | return false; | |
882 | } | |
883 | } | |
884 | ||
885 | /* Write out the Cygnus debugging header if there is one. */ | |
886 | if (find_nonzero ((PTR) nlm_cygnus_ext_header (abfd), | |
887 | sizeof (Nlm_Internal_Cygnus_Ext_Header))) | |
888 | { | |
889 | Nlm_External_Custom_Header thdr; | |
890 | ||
891 | memcpy (thdr.stamp, "CuStHeAd", 8); | |
892 | put_word (abfd, (bfd_vma) 2 * NLM_TARGET_LONG_SIZE + 8, | |
893 | (bfd_byte *) thdr.length); | |
894 | put_word (abfd, (bfd_vma) nlm_cygnus_ext_header (abfd)->offset, | |
895 | (bfd_byte *) thdr.dataOffset); | |
896 | put_word (abfd, (bfd_vma) nlm_cygnus_ext_header (abfd)->length, | |
897 | (bfd_byte *) thdr.dataLength); | |
898 | memcpy (thdr.dataStamp, "CyGnUsEx", 8); | |
899 | if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
900 | return false; | |
901 | } | |
902 | ||
903 | return true; | |
904 | } | |
905 | ||
906 | /* We read the NLM's public symbols and use it to generate a bfd symbol | |
907 | table (hey, it's better than nothing) on a one-for-one basis. Thus | |
908 | use the number of public symbols as the number of bfd symbols we will | |
909 | have once we actually get around to reading them in. | |
910 | ||
911 | Return the number of bytes required to hold the symtab vector, based on | |
912 | the count plus 1, since we will NULL terminate the vector allocated based | |
1518639e | 913 | on this size. */ |
252b5132 RH |
914 | |
915 | long | |
916 | nlm_get_symtab_upper_bound (abfd) | |
917 | bfd *abfd; | |
918 | { | |
919 | Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */ | |
920 | long symcount; | |
921 | long symtab_size = 0; | |
922 | ||
923 | i_fxdhdrp = nlm_fixed_header (abfd); | |
924 | symcount = (i_fxdhdrp->numberOfPublics | |
925 | + i_fxdhdrp->numberOfDebugRecords | |
926 | + i_fxdhdrp->numberOfExternalReferences); | |
927 | symtab_size = (symcount + 1) * (sizeof (asymbol)); | |
928 | return (symtab_size); | |
929 | } | |
930 | ||
931 | /* Note that bfd_get_symcount is guaranteed to be zero if slurping the | |
1518639e | 932 | symbol table fails. */ |
252b5132 RH |
933 | |
934 | long | |
935 | nlm_get_symtab (abfd, alocation) | |
936 | bfd *abfd; | |
937 | asymbol **alocation; | |
938 | { | |
939 | nlm_symbol_type *symbase; | |
940 | bfd_size_type counter = 0; | |
941 | ||
942 | if (nlm_slurp_symbol_table (abfd) == false) | |
943 | return -1; | |
944 | symbase = nlm_get_symbols (abfd); | |
945 | while (counter < bfd_get_symcount (abfd)) | |
946 | { | |
947 | *alocation++ = &symbase->symbol; | |
948 | symbase++; | |
949 | counter++; | |
950 | } | |
951 | *alocation = (asymbol *) NULL; | |
952 | return bfd_get_symcount (abfd); | |
953 | } | |
954 | ||
955 | /* Make an NLM symbol. There is nothing special to do here. */ | |
956 | ||
957 | asymbol * | |
958 | nlm_make_empty_symbol (abfd) | |
959 | bfd *abfd; | |
960 | { | |
961 | nlm_symbol_type *new; | |
962 | ||
963 | new = (nlm_symbol_type *) bfd_zalloc (abfd, sizeof (nlm_symbol_type)); | |
964 | if (new) | |
965 | new->symbol.the_bfd = abfd; | |
966 | return &new->symbol; | |
967 | } | |
968 | ||
969 | /* Get symbol information. */ | |
970 | ||
971 | void | |
972 | nlm_get_symbol_info (ignore_abfd, symbol, ret) | |
5f771d47 | 973 | bfd *ignore_abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
974 | asymbol *symbol; |
975 | symbol_info *ret; | |
976 | { | |
977 | bfd_symbol_info (symbol, ret); | |
978 | } | |
979 | ||
980 | /* Print symbol information. */ | |
981 | ||
982 | void | |
983 | nlm_print_symbol (abfd, afile, symbol, how) | |
5f771d47 | 984 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
985 | PTR afile; |
986 | asymbol *symbol; | |
987 | bfd_print_symbol_type how; | |
988 | { | |
989 | FILE *file = (FILE *) afile; | |
990 | ||
991 | switch (how) | |
992 | { | |
993 | case bfd_print_symbol_name: | |
994 | case bfd_print_symbol_more: | |
995 | if (symbol->name) | |
996 | fprintf (file, "%s", symbol->name); | |
997 | break; | |
998 | case bfd_print_symbol_all: | |
999 | bfd_print_symbol_vandf ((PTR) file, symbol); | |
1000 | fprintf (file, " %-5s", symbol->section->name); | |
1001 | if (symbol->name) | |
1002 | fprintf (file, " %s", symbol->name); | |
1003 | break; | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | /* Slurp in nlm symbol table. | |
1008 | ||
1009 | In the external (in-file) form, NLM export records are variable length, | |
1010 | with the following form: | |
1011 | ||
1012 | 1 byte length of the symbol name (N) | |
1013 | N bytes the symbol name | |
1014 | 4 bytes the symbol offset from start of it's section | |
1015 | ||
1016 | We also read in the debugging symbols and import records. Import | |
1017 | records are treated as undefined symbols. As we read the import | |
1018 | records we also read in the associated reloc information, which is | |
1019 | attached to the symbol. | |
1020 | ||
1021 | The bfd symbols are copied to SYMPTRS. | |
1022 | ||
1023 | When we return, the bfd symcount is either zero or contains the correct | |
1024 | number of symbols. | |
1025 | */ | |
1026 | ||
1027 | static boolean | |
1028 | nlm_slurp_symbol_table (abfd) | |
1029 | bfd *abfd; | |
1030 | { | |
1031 | Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */ | |
1032 | bfd_size_type totsymcount; /* Number of NLM symbols */ | |
1033 | bfd_size_type symcount; /* Counter of NLM symbols */ | |
1034 | nlm_symbol_type *sym; /* Pointer to current bfd symbol */ | |
1035 | unsigned char symlength; /* Symbol length read into here */ | |
1036 | unsigned char symtype; /* Type of debugging symbol */ | |
1037 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Symbol offsets read into here */ | |
1038 | boolean (*read_import_func) PARAMS ((bfd *, nlm_symbol_type *)); | |
1039 | boolean (*set_public_section_func) PARAMS ((bfd *, nlm_symbol_type *)); | |
1040 | ||
1041 | if (nlm_get_symbols (abfd) != NULL) | |
1042 | return (true); | |
1043 | ||
1044 | /* Read each raw NLM symbol, using the information to create a canonical bfd | |
1045 | symbol table entry. | |
1046 | ||
1047 | Note that we allocate the initial bfd canonical symbol buffer based on a | |
1048 | one-to-one mapping of the NLM symbols to canonical symbols. We actually | |
1049 | use all the NLM symbols, so there will be no space left over at the end. | |
1518639e | 1050 | When we have all the symbols, we build the caller's pointer vector. */ |
252b5132 RH |
1051 | |
1052 | abfd->symcount = 0; | |
1053 | i_fxdhdrp = nlm_fixed_header (abfd); | |
1054 | totsymcount = (i_fxdhdrp->numberOfPublics | |
1055 | + i_fxdhdrp->numberOfDebugRecords | |
1056 | + i_fxdhdrp->numberOfExternalReferences); | |
1057 | if (totsymcount == 0) | |
1058 | { | |
1059 | return (true); | |
1060 | } | |
1061 | ||
1062 | if (bfd_seek (abfd, i_fxdhdrp->publicsOffset, SEEK_SET) == -1) | |
1063 | return (false); | |
1064 | ||
1065 | sym = ((nlm_symbol_type *) | |
1066 | bfd_zalloc (abfd, totsymcount * sizeof (nlm_symbol_type))); | |
1067 | if (!sym) | |
1068 | return false; | |
1069 | nlm_set_symbols (abfd, sym); | |
1070 | ||
1071 | /* We use the bfd's symcount directly as the control count, so that early | |
1072 | termination of the loop leaves the symcount correct for the symbols that | |
1518639e | 1073 | were read. */ |
252b5132 RH |
1074 | |
1075 | set_public_section_func = nlm_set_public_section_func (abfd); | |
1076 | symcount = i_fxdhdrp->numberOfPublics; | |
1077 | while (abfd->symcount < symcount) | |
1078 | { | |
1079 | if (bfd_read ((PTR) & symlength, sizeof (symlength), 1, abfd) | |
1080 | != sizeof (symlength)) | |
1081 | return (false); | |
1082 | sym->symbol.the_bfd = abfd; | |
1083 | sym->symbol.name = bfd_alloc (abfd, symlength + 1); | |
1084 | if (!sym->symbol.name) | |
1085 | return false; | |
1086 | if (bfd_read ((PTR) sym->symbol.name, symlength, 1, abfd) | |
1087 | != symlength) | |
1088 | return (false); | |
1089 | /* Cast away const. */ | |
1090 | ((char *) (sym->symbol.name))[symlength] = '\0'; | |
1091 | if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
1092 | return (false); | |
1093 | sym->symbol.flags = BSF_GLOBAL | BSF_EXPORT; | |
1094 | sym->symbol.value = get_word (abfd, temp); | |
1095 | if (set_public_section_func) | |
1096 | { | |
1097 | /* Most backends can use the code below, but unfortunately | |
1098 | some use a different scheme. */ | |
1099 | if ((*set_public_section_func) (abfd, sym) == false) | |
1100 | return false; | |
1101 | } | |
1102 | else | |
1103 | { | |
1104 | if (sym->symbol.value & NLM_HIBIT) | |
1105 | { | |
1106 | sym->symbol.value &= ~NLM_HIBIT; | |
1107 | sym->symbol.flags |= BSF_FUNCTION; | |
1108 | sym->symbol.section = | |
1109 | bfd_get_section_by_name (abfd, NLM_CODE_NAME); | |
1110 | } | |
1111 | else | |
1112 | { | |
1113 | sym->symbol.section = | |
1114 | bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); | |
1115 | } | |
1116 | } | |
1117 | sym->rcnt = 0; | |
1118 | abfd->symcount++; | |
1119 | sym++; | |
1120 | } | |
1121 | ||
1122 | /* Read the debugging records. */ | |
1123 | ||
1124 | if (i_fxdhdrp->numberOfDebugRecords > 0) | |
1125 | { | |
1126 | if (bfd_seek (abfd, i_fxdhdrp->debugInfoOffset, SEEK_SET) == -1) | |
1127 | return (false); | |
1128 | ||
1129 | symcount += i_fxdhdrp->numberOfDebugRecords; | |
1130 | while (abfd->symcount < symcount) | |
1131 | { | |
1132 | if ((bfd_read ((PTR) & symtype, sizeof (symtype), 1, abfd) | |
1133 | != sizeof (symtype)) | |
1134 | || bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp) | |
1135 | || (bfd_read ((PTR) & symlength, sizeof (symlength), 1, abfd) | |
1136 | != sizeof (symlength))) | |
1137 | return false; | |
1138 | sym->symbol.the_bfd = abfd; | |
1139 | sym->symbol.name = bfd_alloc (abfd, symlength + 1); | |
1140 | if (!sym->symbol.name) | |
1141 | return false; | |
1142 | if (bfd_read ((PTR) sym->symbol.name, symlength, 1, abfd) | |
1143 | != symlength) | |
1144 | return (false); | |
1145 | /* Cast away const. */ | |
1146 | ((char *) (sym->symbol.name))[symlength] = '\0'; | |
1147 | sym->symbol.flags = BSF_LOCAL; | |
1148 | sym->symbol.value = get_word (abfd, temp); | |
1149 | if (symtype == 0) | |
1150 | { | |
1151 | sym->symbol.section = | |
1152 | bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); | |
1153 | } | |
1154 | else if (symtype == 1) | |
1155 | { | |
1156 | sym->symbol.flags |= BSF_FUNCTION; | |
1157 | sym->symbol.section = | |
1158 | bfd_get_section_by_name (abfd, NLM_CODE_NAME); | |
1159 | } | |
1160 | else | |
1161 | { | |
1162 | sym->symbol.section = bfd_abs_section_ptr; | |
1163 | } | |
1164 | sym->rcnt = 0; | |
1165 | abfd->symcount++; | |
1166 | sym++; | |
1167 | } | |
1168 | } | |
1169 | ||
1170 | /* Read in the import records. We can only do this if we know how | |
1171 | to read relocs for this target. */ | |
1172 | ||
1173 | read_import_func = nlm_read_import_func (abfd); | |
1174 | if (read_import_func != NULL) | |
1175 | { | |
1176 | if (bfd_seek (abfd, i_fxdhdrp->externalReferencesOffset, SEEK_SET) | |
1177 | == -1) | |
1178 | return (false); | |
1179 | ||
1180 | symcount += i_fxdhdrp->numberOfExternalReferences; | |
1181 | while (abfd->symcount < symcount) | |
1182 | { | |
1183 | if ((*read_import_func) (abfd, sym) == false) | |
1184 | return false; | |
1185 | sym++; | |
1186 | abfd->symcount++; | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | return (true); | |
1191 | } | |
1192 | \f | |
1193 | /* Get the relocs for an NLM file. There are two types of relocs. | |
1194 | Imports are relocs against symbols defined in other NLM files. We | |
1195 | treat these as relocs against global symbols. Relocation fixups | |
1196 | are internal relocs. | |
1197 | ||
1198 | The actual format used to store the relocs is machine specific. */ | |
1199 | ||
1200 | /* Read in the relocation fixup information. This is stored in | |
1201 | nlm_relocation_fixups, an array of arelent structures, and | |
1202 | nlm_relocation_fixup_secs, an array of section pointers. The | |
1203 | section pointers are needed because the relocs are not sorted by | |
1204 | section. */ | |
1205 | ||
1206 | static boolean | |
1207 | nlm_slurp_reloc_fixups (abfd) | |
1208 | bfd *abfd; | |
1209 | { | |
1210 | boolean (*read_func) PARAMS ((bfd *, nlm_symbol_type *, asection **, | |
1211 | arelent *)); | |
1212 | bfd_size_type count; | |
1213 | arelent *rels; | |
1214 | asection **secs; | |
1215 | ||
1216 | if (nlm_relocation_fixups (abfd) != NULL) | |
1217 | return true; | |
1218 | read_func = nlm_read_reloc_func (abfd); | |
1219 | if (read_func == NULL) | |
1220 | return true; | |
1221 | ||
1222 | if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset, | |
1223 | SEEK_SET) != 0) | |
1224 | return false; | |
1225 | ||
1226 | count = nlm_fixed_header (abfd)->numberOfRelocationFixups; | |
1227 | rels = (arelent *) bfd_alloc (abfd, count * sizeof (arelent)); | |
1228 | secs = (asection **) bfd_alloc (abfd, count * sizeof (asection *)); | |
1229 | if ((rels == NULL || secs == NULL) && count != 0) | |
1230 | return false; | |
1231 | nlm_relocation_fixups (abfd) = rels; | |
1232 | nlm_relocation_fixup_secs (abfd) = secs; | |
1233 | ||
1234 | /* We have to read piece by piece, because we don't know how large | |
1235 | the machine specific reloc information is. */ | |
1236 | while (count-- != 0) | |
1237 | { | |
1238 | if ((*read_func) (abfd, (nlm_symbol_type *) NULL, secs, rels) == false) | |
1239 | { | |
1240 | nlm_relocation_fixups (abfd) = NULL; | |
1241 | nlm_relocation_fixup_secs (abfd) = NULL; | |
1242 | return false; | |
1243 | } | |
1244 | ++secs; | |
1245 | ++rels; | |
1246 | } | |
1247 | ||
1248 | return true; | |
1249 | } | |
1250 | ||
1251 | /* Get the number of relocs. This really just returns an upper bound, | |
1252 | since it does not attempt to distinguish them based on the section. | |
1253 | That will be handled when they are actually read. */ | |
1254 | ||
1255 | long | |
1256 | nlm_get_reloc_upper_bound (abfd, sec) | |
1257 | bfd *abfd; | |
1258 | asection *sec; | |
1259 | { | |
1260 | nlm_symbol_type *syms; | |
1261 | bfd_size_type count; | |
1262 | unsigned int ret; | |
1263 | ||
1264 | /* If we don't know how to read relocs, just return 0. */ | |
1265 | if (nlm_read_reloc_func (abfd) == NULL) | |
1266 | return -1; | |
1267 | /* Make sure we have either the code or the data section. */ | |
1268 | if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0) | |
1269 | return 0; | |
1270 | ||
1271 | syms = nlm_get_symbols (abfd); | |
1272 | if (syms == NULL) | |
1273 | { | |
1274 | if (nlm_slurp_symbol_table (abfd) == false) | |
1275 | return -1; | |
1276 | syms = nlm_get_symbols (abfd); | |
1277 | } | |
1278 | ||
1279 | ret = nlm_fixed_header (abfd)->numberOfRelocationFixups; | |
1280 | ||
1281 | count = bfd_get_symcount (abfd); | |
1282 | while (count-- != 0) | |
1283 | { | |
1284 | ret += syms->rcnt; | |
1285 | ++syms; | |
1286 | } | |
1287 | ||
1288 | return (ret + 1) * sizeof (arelent *); | |
1289 | } | |
1290 | ||
1291 | /* Get the relocs themselves. */ | |
1292 | ||
1293 | long | |
1294 | nlm_canonicalize_reloc (abfd, sec, relptr, symbols) | |
1295 | bfd *abfd; | |
1296 | asection *sec; | |
1297 | arelent **relptr; | |
1298 | asymbol **symbols; | |
1299 | { | |
1300 | arelent *rels; | |
1301 | asection **secs; | |
1302 | bfd_size_type count, i; | |
1303 | unsigned int ret; | |
1304 | ||
1305 | /* Get the relocation fixups. */ | |
1306 | rels = nlm_relocation_fixups (abfd); | |
1307 | if (rels == NULL) | |
1308 | { | |
1309 | if (nlm_slurp_reloc_fixups (abfd) == false) | |
1310 | return -1; | |
1311 | rels = nlm_relocation_fixups (abfd); | |
1312 | } | |
1313 | secs = nlm_relocation_fixup_secs (abfd); | |
1314 | ||
1315 | ret = 0; | |
1316 | count = nlm_fixed_header (abfd)->numberOfRelocationFixups; | |
1317 | for (i = 0; i < count; i++, rels++, secs++) | |
1318 | { | |
1319 | if (*secs == sec) | |
1320 | { | |
1321 | *relptr++ = rels; | |
1322 | ++ret; | |
1323 | } | |
1324 | } | |
1325 | ||
1326 | /* Get the import symbols. */ | |
1327 | count = bfd_get_symcount (abfd); | |
1328 | for (i = 0; i < count; i++, symbols++) | |
1329 | { | |
1330 | asymbol *sym; | |
1331 | ||
1332 | sym = *symbols; | |
1333 | if (bfd_asymbol_flavour (sym) == bfd_target_nlm_flavour) | |
1334 | { | |
1335 | nlm_symbol_type *nlm_sym; | |
1336 | bfd_size_type j; | |
1337 | ||
1338 | nlm_sym = (nlm_symbol_type *) sym; | |
1339 | for (j = 0; j < nlm_sym->rcnt; j++) | |
1340 | { | |
1341 | if (nlm_sym->relocs[j].section == sec) | |
1342 | { | |
1343 | *relptr = &nlm_sym->relocs[j].reloc; | |
1344 | (*relptr)->sym_ptr_ptr = symbols; | |
1345 | ++relptr; | |
1346 | ++ret; | |
1347 | } | |
1348 | } | |
1349 | } | |
1350 | } | |
1351 | ||
1352 | *relptr = NULL; | |
1353 | ||
1354 | return ret; | |
1355 | } | |
1356 | \f | |
1357 | /* Compute the section file positions for an NLM file. All variable | |
1358 | length data in the file headers must be set before this function is | |
1359 | called. If the variable length data is changed later, the | |
1360 | resulting object file will be incorrect. Unfortunately, there is | |
1361 | no way to check this. | |
1362 | ||
1363 | This routine also sets the Size and Offset fields in the fixed | |
1364 | header. | |
1365 | ||
1366 | It also looks over the symbols and moves any common symbols into | |
1367 | the .bss section; NLM has no way to represent a common symbol. | |
1368 | This approach means that either the symbols must already have been | |
1369 | set at this point, or there must be no common symbols. We need to | |
1370 | move the symbols at this point so that mangle_relocs can see the | |
1371 | final values. */ | |
1372 | ||
1373 | static boolean | |
1374 | nlm_compute_section_file_positions (abfd) | |
1375 | bfd *abfd; | |
1376 | { | |
1377 | file_ptr sofar; | |
1378 | asection *sec; | |
1379 | bfd_vma text, data, bss; | |
1380 | bfd_vma text_low, data_low; | |
1381 | unsigned int text_align, data_align, other_align; | |
1382 | file_ptr text_ptr, data_ptr, other_ptr; | |
1383 | asection *bss_sec; | |
1384 | asymbol **sym_ptr_ptr; | |
1385 | ||
1386 | if (abfd->output_has_begun == true) | |
1387 | return true; | |
1388 | ||
1389 | /* Make sure we have a section to hold uninitialized data. */ | |
1390 | bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); | |
1391 | if (bss_sec == NULL) | |
1392 | { | |
1393 | if (!add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME, | |
1394 | (file_ptr) 0, (bfd_size_type) 0, | |
1395 | SEC_ALLOC)) | |
1396 | return false; | |
1397 | bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); | |
1398 | } | |
1399 | ||
1400 | abfd->output_has_begun = true; | |
1401 | ||
1402 | /* The fixed header. */ | |
1403 | sofar = nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd); | |
1404 | ||
1405 | /* The variable header. */ | |
1406 | sofar += (sizeof (nlm_variable_header (abfd)->descriptionLength) | |
1407 | + nlm_variable_header (abfd)->descriptionLength + 1 | |
1408 | + NLM_TARGET_LONG_SIZE /* stackSize */ | |
1409 | + NLM_TARGET_LONG_SIZE /* reserved */ | |
1410 | + sizeof (nlm_variable_header (abfd)->oldThreadName) | |
1411 | + sizeof (nlm_variable_header (abfd)->screenNameLength) | |
1412 | + nlm_variable_header (abfd)->screenNameLength + 1 | |
1413 | + sizeof (nlm_variable_header (abfd)->threadNameLength) | |
1414 | + nlm_variable_header (abfd)->threadNameLength + 1); | |
1415 | ||
1416 | /* The auxiliary headers. */ | |
1417 | if (find_nonzero ((PTR) nlm_version_header (abfd), | |
1418 | sizeof (Nlm_Internal_Version_Header))) | |
1419 | sofar += sizeof (Nlm_External_Version_Header); | |
1420 | if (find_nonzero ((PTR) nlm_extended_header (abfd), | |
1421 | sizeof (Nlm_Internal_Extended_Header))) | |
1422 | sofar += sizeof (Nlm_External_Extended_Header); | |
1423 | if (find_nonzero ((PTR) nlm_copyright_header (abfd), | |
1424 | sizeof (Nlm_Internal_Copyright_Header))) | |
1425 | sofar += (sizeof (Nlm_External_Copyright_Header) | |
1426 | + nlm_copyright_header (abfd)->copyrightMessageLength + 1); | |
1427 | if (find_nonzero ((PTR) nlm_custom_header (abfd), | |
1428 | sizeof (Nlm_Internal_Custom_Header))) | |
1429 | sofar += (sizeof (Nlm_External_Custom_Header) | |
1430 | + nlm_custom_header (abfd)->hdrLength); | |
1431 | if (find_nonzero ((PTR) nlm_cygnus_ext_header (abfd), | |
1432 | sizeof (Nlm_Internal_Cygnus_Ext_Header))) | |
1433 | sofar += sizeof (Nlm_External_Custom_Header); | |
1434 | ||
1435 | /* Compute the section file positions in two passes. First get the | |
1436 | sizes of the text and data sections, and then set the file | |
1437 | positions. This code aligns the sections in the file using the | |
1438 | same alignment restrictions that apply to the sections in memory; | |
1439 | this may not be necessary. */ | |
1440 | text = 0; | |
1441 | text_low = (bfd_vma) - 1; | |
1442 | text_align = 0; | |
1443 | data = 0; | |
1444 | data_low = (bfd_vma) - 1; | |
1445 | data_align = 0; | |
1446 | bss = 0; | |
1447 | other_align = 0; | |
1448 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1449 | { | |
1450 | flagword f; | |
1451 | ||
1452 | sec->_raw_size = BFD_ALIGN (sec->_raw_size, 1 << sec->alignment_power); | |
1453 | ||
1454 | f = bfd_get_section_flags (abfd, sec); | |
1455 | if (f & SEC_CODE) | |
1456 | { | |
1457 | text += sec->_raw_size; | |
1458 | if (bfd_get_section_vma (abfd, sec) < text_low) | |
1459 | text_low = bfd_get_section_vma (abfd, sec); | |
1460 | if (sec->alignment_power > text_align) | |
1461 | text_align = sec->alignment_power; | |
1462 | } | |
1463 | else if (f & SEC_DATA) | |
1464 | { | |
1465 | data += sec->_raw_size; | |
1466 | if (bfd_get_section_vma (abfd, sec) < data_low) | |
1467 | data_low = bfd_get_section_vma (abfd, sec); | |
1468 | if (sec->alignment_power > data_align) | |
1469 | data_align = sec->alignment_power; | |
1470 | } | |
1471 | else if (f & SEC_HAS_CONTENTS) | |
1472 | { | |
1473 | if (sec->alignment_power > other_align) | |
1474 | other_align = sec->alignment_power; | |
1475 | } | |
1476 | else if (f & SEC_ALLOC) | |
1477 | bss += sec->_raw_size; | |
1478 | } | |
1479 | ||
1480 | nlm_set_text_low (abfd, text_low); | |
1481 | nlm_set_data_low (abfd, data_low); | |
1482 | ||
1483 | if (nlm_no_uninitialized_data (abfd)) | |
1484 | { | |
1485 | /* This NetWare format does not use uninitialized data. We must | |
1486 | increase the size of the data section. We will never wind up | |
1487 | writing those file locations, so they will remain zero. */ | |
1488 | data += bss; | |
1489 | bss = 0; | |
1490 | } | |
1491 | ||
1492 | text_ptr = BFD_ALIGN (sofar, 1 << text_align); | |
1493 | data_ptr = BFD_ALIGN (text_ptr + text, 1 << data_align); | |
1494 | other_ptr = BFD_ALIGN (data_ptr + data, 1 << other_align); | |
1495 | ||
1496 | /* Fill in some fields in the header for which we now have the | |
1497 | information. */ | |
1498 | nlm_fixed_header (abfd)->codeImageOffset = text_ptr; | |
1499 | nlm_fixed_header (abfd)->codeImageSize = text; | |
1500 | nlm_fixed_header (abfd)->dataImageOffset = data_ptr; | |
1501 | nlm_fixed_header (abfd)->dataImageSize = data; | |
1502 | nlm_fixed_header (abfd)->uninitializedDataSize = bss; | |
1503 | ||
1504 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1505 | { | |
1506 | flagword f; | |
1507 | ||
1508 | f = bfd_get_section_flags (abfd, sec); | |
1509 | ||
1510 | if (f & SEC_CODE) | |
1511 | { | |
1512 | sec->filepos = text_ptr; | |
1513 | text_ptr += sec->_raw_size; | |
1514 | } | |
1515 | else if (f & SEC_DATA) | |
1516 | { | |
1517 | sec->filepos = data_ptr; | |
1518 | data_ptr += sec->_raw_size; | |
1519 | } | |
1520 | else if (f & SEC_HAS_CONTENTS) | |
1521 | { | |
1522 | sec->filepos = other_ptr; | |
1523 | other_ptr += sec->_raw_size; | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | nlm_fixed_header (abfd)->relocationFixupOffset = other_ptr; | |
1528 | ||
1529 | /* Move all common symbols into the .bss section. */ | |
1530 | ||
1531 | sym_ptr_ptr = bfd_get_outsymbols (abfd); | |
1532 | if (sym_ptr_ptr != NULL) | |
1533 | { | |
1534 | asymbol **sym_end; | |
1535 | bfd_vma add; | |
1536 | ||
1537 | sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); | |
1538 | add = 0; | |
1539 | for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) | |
1540 | { | |
1541 | asymbol *sym; | |
1542 | bfd_vma size; | |
1543 | ||
1544 | sym = *sym_ptr_ptr; | |
1545 | ||
1546 | if (!bfd_is_com_section (bfd_get_section (sym))) | |
1547 | continue; | |
1548 | ||
1549 | /* Put the common symbol in the .bss section, and increase | |
1550 | the size of the .bss section by the size of the common | |
1551 | symbol (which is the old value of the symbol). */ | |
1552 | sym->section = bss_sec; | |
1553 | size = sym->value; | |
1554 | sym->value = bss_sec->_raw_size + add; | |
1555 | add += size; | |
1556 | add = BFD_ALIGN (add, 1 << bss_sec->alignment_power); | |
1557 | } | |
1558 | if (add != 0) | |
1559 | { | |
1560 | if (nlm_no_uninitialized_data (abfd)) | |
1561 | { | |
1562 | /* We could handle this case, but so far it hasn't been | |
1563 | necessary. */ | |
1564 | abort (); | |
1565 | } | |
1566 | nlm_fixed_header (abfd)->uninitializedDataSize += add; | |
1567 | bss_sec->_raw_size += add; | |
1568 | } | |
1569 | } | |
1570 | ||
1571 | return true; | |
1572 | } | |
1573 | ||
1574 | /* Set the contents of a section. To do this we need to know where | |
1575 | the section is going to be located in the output file. That means | |
1576 | that the sizes of all the sections must be set, and all the | |
1577 | variable size header information must be known. */ | |
1578 | ||
1579 | boolean | |
1580 | nlm_set_section_contents (abfd, section, location, offset, count) | |
1581 | bfd *abfd; | |
1582 | asection *section; | |
1583 | PTR location; | |
1584 | file_ptr offset; | |
1585 | bfd_size_type count; | |
1586 | { | |
1587 | if (abfd->output_has_begun == false | |
1588 | && nlm_compute_section_file_positions (abfd) == false) | |
1589 | return false; | |
1590 | ||
1591 | if (count == 0) | |
1592 | return true; | |
1593 | ||
1594 | /* i386 NetWare has a very restricted set of relocs. In order for | |
1595 | objcopy to work, the NLM i386 backend needs a chance to rework | |
1596 | the section contents so that its set of relocs will work. If all | |
1597 | the relocs are already acceptable, this will not do anything. */ | |
1598 | if (section->reloc_count != 0) | |
1599 | { | |
1600 | boolean (*mangle_relocs_func) PARAMS ((bfd *, asection *, PTR, | |
1601 | bfd_vma, bfd_size_type)); | |
1602 | ||
1603 | mangle_relocs_func = nlm_mangle_relocs_func (abfd); | |
1604 | if (mangle_relocs_func != NULL) | |
1605 | { | |
1606 | if (!(*mangle_relocs_func) (abfd, section, location, | |
1607 | (bfd_vma) offset, count)) | |
1608 | return false; | |
1609 | } | |
1610 | } | |
1611 | ||
1612 | if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0 | |
1613 | || bfd_write (location, 1, count, abfd) != count) | |
1614 | return false; | |
1615 | ||
1616 | return true; | |
1617 | } | |
1618 | ||
1619 | /* We need to sort a list of relocs associated with sections when we | |
1620 | write out the external relocs. */ | |
1621 | ||
1622 | static int | |
1623 | nlm_external_reloc_compare (p1, p2) | |
1624 | const void *p1; | |
1625 | const void *p2; | |
1626 | { | |
1627 | const struct reloc_and_sec *r1 = (const struct reloc_and_sec *) p1; | |
1628 | const struct reloc_and_sec *r2 = (const struct reloc_and_sec *) p2; | |
1629 | int cmp; | |
1630 | ||
1631 | cmp = strcmp ((*r1->rel->sym_ptr_ptr)->name, | |
1632 | (*r2->rel->sym_ptr_ptr)->name); | |
1633 | if (cmp != 0) | |
1634 | return cmp; | |
1635 | ||
1636 | /* We sort by address within symbol to make the sort more stable and | |
1637 | increase the chances that different hosts will generate bit for | |
1638 | bit equivalent results. */ | |
1639 | return (int) (r1->rel->address - r2->rel->address); | |
1640 | } | |
1641 | ||
1642 | /* Write out an NLM file. We write out the information in this order: | |
1643 | fixed header | |
1644 | variable header | |
1645 | auxiliary headers | |
1646 | code sections | |
1647 | data sections | |
1648 | other sections (custom data, messages, help, shared NLM, RPC, | |
1649 | module dependencies) | |
1650 | relocation fixups | |
1651 | external references (imports) | |
1652 | public symbols (exports) | |
1653 | debugging records | |
1654 | This is similar to the order used by the NetWare tools; the | |
1655 | difference is that NetWare puts the sections other than code, data | |
1656 | and custom data at the end of the NLM. It is convenient for us to | |
1657 | know where the sections are going to be before worrying about the | |
1658 | size of the other information. | |
1659 | ||
1660 | By the time this function is called, all the section data should | |
1661 | have been output using set_section_contents. Note that custom | |
1662 | data, the message file, the help file, the shared NLM file, the RPC | |
1663 | data, and the module dependencies are all considered to be | |
1664 | sections; the caller is responsible for filling in the offset and | |
1665 | length fields in the NLM headers. The relocation fixups and | |
1666 | imports are both obtained from the list of relocs attached to each | |
1667 | section. The exports and debugging records are obtained from the | |
1668 | list of outsymbols. */ | |
1669 | ||
1670 | boolean | |
1671 | nlm_write_object_contents (abfd) | |
1672 | bfd *abfd; | |
1673 | { | |
1674 | asection *sec; | |
1675 | boolean (*write_import_func) PARAMS ((bfd *, asection *, arelent *)); | |
1676 | bfd_size_type external_reloc_count, internal_reloc_count, i, c; | |
1677 | struct reloc_and_sec *external_relocs; | |
1678 | asymbol **sym_ptr_ptr; | |
1679 | file_ptr last; | |
1680 | boolean (*write_prefix_func) PARAMS ((bfd *)); | |
1681 | unsigned char *fixed_header = NULL; | |
1682 | ||
1683 | fixed_header = ((unsigned char *) | |
1684 | bfd_malloc ((size_t) nlm_fixed_header_size (abfd))); | |
1685 | if (fixed_header == NULL) | |
1686 | goto error_return; | |
1687 | ||
1688 | if (abfd->output_has_begun == false | |
1689 | && nlm_compute_section_file_positions (abfd) == false) | |
1690 | goto error_return; | |
1691 | ||
1692 | /* Write out the variable length headers. */ | |
1693 | if (bfd_seek (abfd, | |
1694 | nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd), | |
1695 | SEEK_SET) != 0) | |
1696 | goto error_return; | |
1697 | if (nlm_swap_variable_header_out (abfd) == false | |
1698 | || nlm_swap_auxiliary_headers_out (abfd) == false) | |
1699 | { | |
1700 | bfd_set_error (bfd_error_system_call); | |
1701 | goto error_return; | |
1702 | } | |
1703 | ||
1704 | /* A weak check on whether the section file positions were | |
1705 | reasonable. */ | |
1706 | if (bfd_tell (abfd) > nlm_fixed_header (abfd)->codeImageOffset) | |
1707 | { | |
1708 | bfd_set_error (bfd_error_invalid_operation); | |
1709 | goto error_return; | |
1710 | } | |
1711 | ||
1712 | /* Advance to the relocs. */ | |
1713 | if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset, | |
1714 | SEEK_SET) != 0) | |
1715 | goto error_return; | |
1716 | ||
1717 | /* The format of the relocation entries is dependent upon the | |
1718 | particular target. We use an external routine to write the reloc | |
1719 | out. */ | |
1720 | write_import_func = nlm_write_import_func (abfd); | |
1721 | ||
1722 | /* Write out the internal relocation fixups. While we're looping | |
1723 | over the relocs, we also count the external relocs, which is | |
1724 | needed when they are written out below. */ | |
1725 | internal_reloc_count = 0; | |
1726 | external_reloc_count = 0; | |
1727 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1728 | { | |
1729 | arelent **rel_ptr_ptr, **rel_end; | |
1730 | ||
1731 | if (sec->reloc_count == 0) | |
1732 | continue; | |
1733 | ||
1734 | /* We can only represent relocs within a code or data | |
1735 | section. We ignore them for a debugging section. */ | |
1736 | if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0) | |
1737 | continue; | |
1738 | ||
1739 | /* We need to know how to write out imports */ | |
1740 | if (write_import_func == NULL) | |
1741 | { | |
1742 | bfd_set_error (bfd_error_invalid_operation); | |
1743 | goto error_return; | |
1744 | } | |
1745 | ||
1746 | rel_ptr_ptr = sec->orelocation; | |
1747 | rel_end = rel_ptr_ptr + sec->reloc_count; | |
1748 | for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++) | |
1749 | { | |
1750 | arelent *rel; | |
1751 | asymbol *sym; | |
1752 | ||
1753 | rel = *rel_ptr_ptr; | |
1754 | sym = *rel->sym_ptr_ptr; | |
1755 | ||
1756 | if (! bfd_is_und_section (bfd_get_section (sym))) | |
1757 | { | |
1758 | ++internal_reloc_count; | |
1759 | if ((*write_import_func) (abfd, sec, rel) == false) | |
1760 | goto error_return; | |
1761 | } | |
1762 | else | |
1763 | ++external_reloc_count; | |
1764 | } | |
1765 | } | |
1766 | nlm_fixed_header (abfd)->numberOfRelocationFixups = internal_reloc_count; | |
1767 | ||
1768 | /* Write out the imports (relocs against external symbols). These | |
1769 | are output as a symbol name followed by all the relocs for that | |
1770 | symbol, so we must first gather together all the relocs against | |
1771 | external symbols and sort them. */ | |
1772 | external_relocs = | |
1773 | (struct reloc_and_sec *) bfd_alloc (abfd, | |
1774 | (external_reloc_count | |
1775 | * sizeof (struct reloc_and_sec))); | |
1776 | if (external_relocs == (struct reloc_and_sec *) NULL) | |
1777 | goto error_return; | |
1778 | i = 0; | |
1779 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1780 | { | |
1781 | arelent **rel_ptr_ptr, **rel_end; | |
1782 | ||
1783 | if (sec->reloc_count == 0) | |
1784 | continue; | |
1785 | ||
1786 | rel_ptr_ptr = sec->orelocation; | |
1787 | rel_end = rel_ptr_ptr + sec->reloc_count; | |
1788 | for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++) | |
1789 | { | |
1790 | arelent *rel; | |
1791 | asymbol *sym; | |
1792 | ||
1793 | rel = *rel_ptr_ptr; | |
1794 | sym = *rel->sym_ptr_ptr; | |
1795 | ||
1796 | if (! bfd_is_und_section (bfd_get_section (sym))) | |
1797 | continue; | |
1798 | ||
1799 | external_relocs[i].rel = rel; | |
1800 | external_relocs[i].sec = sec; | |
1801 | ++i; | |
1802 | } | |
1803 | } | |
1804 | ||
1805 | BFD_ASSERT (i == external_reloc_count); | |
1806 | ||
1807 | /* Sort the external relocs by name. */ | |
1808 | qsort ((PTR) external_relocs, (size_t) external_reloc_count, | |
1809 | sizeof (struct reloc_and_sec), nlm_external_reloc_compare); | |
1810 | ||
1811 | /* Write out the external relocs. */ | |
1812 | nlm_fixed_header (abfd)->externalReferencesOffset = bfd_tell (abfd); | |
1813 | c = 0; | |
1814 | i = 0; | |
1815 | while (i < external_reloc_count) | |
1816 | { | |
1817 | arelent *rel; | |
1818 | asymbol *sym; | |
1819 | bfd_size_type j, cnt; | |
1820 | ||
1821 | ++c; | |
1822 | ||
1823 | rel = external_relocs[i].rel; | |
1824 | sym = *rel->sym_ptr_ptr; | |
1825 | ||
1826 | cnt = 0; | |
1827 | for (j = i; | |
1828 | (j < external_reloc_count | |
1829 | && *external_relocs[j].rel->sym_ptr_ptr == sym); | |
1830 | j++) | |
1831 | ++cnt; | |
1832 | ||
1833 | if ((*nlm_write_external_func (abfd)) (abfd, cnt, sym, | |
1834 | &external_relocs[i]) | |
1835 | == false) | |
1836 | goto error_return; | |
1837 | ||
1838 | i += cnt; | |
1839 | } | |
1840 | ||
1841 | nlm_fixed_header (abfd)->numberOfExternalReferences = c; | |
1842 | ||
1843 | /* Write out the public symbols (exports). */ | |
1844 | sym_ptr_ptr = bfd_get_outsymbols (abfd); | |
1845 | if (sym_ptr_ptr != (asymbol **) NULL) | |
1846 | { | |
1847 | bfd_vma (*get_public_offset_func) PARAMS ((bfd *, asymbol *)); | |
1848 | boolean (*write_export_func) PARAMS ((bfd *, asymbol *, bfd_vma)); | |
1849 | ||
1850 | asymbol **sym_end; | |
1851 | ||
1852 | nlm_fixed_header (abfd)->publicsOffset = bfd_tell (abfd); | |
1853 | get_public_offset_func = nlm_get_public_offset_func (abfd); | |
1854 | write_export_func = nlm_write_export_func (abfd); | |
1855 | c = 0; | |
1856 | sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); | |
1857 | for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) | |
1858 | { | |
1859 | asymbol *sym; | |
1860 | bfd_byte len; | |
1861 | bfd_vma offset; | |
1862 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; | |
1863 | ||
1864 | sym = *sym_ptr_ptr; | |
1865 | ||
1866 | if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) == 0 | |
1867 | || bfd_is_und_section (bfd_get_section (sym))) | |
1868 | continue; | |
1869 | ||
1870 | ++c; | |
1871 | ||
1872 | if (get_public_offset_func) | |
1873 | { | |
1874 | /* Most backends can use the code below, but | |
1875 | unfortunately some use a different scheme. */ | |
1876 | offset = (*get_public_offset_func) (abfd, sym); | |
1877 | } | |
1878 | else | |
1879 | { | |
1880 | offset = bfd_asymbol_value (sym); | |
1881 | sec = sym->section; | |
1882 | if (sec->flags & SEC_CODE) | |
1883 | { | |
1884 | offset -= nlm_get_text_low (abfd); | |
1885 | offset |= NLM_HIBIT; | |
1886 | } | |
1887 | else if (sec->flags & (SEC_DATA | SEC_ALLOC)) | |
1888 | { | |
1889 | /* SEC_ALLOC is for the .bss section. */ | |
1890 | offset -= nlm_get_data_low (abfd); | |
1891 | } | |
1892 | else | |
1893 | { | |
1894 | /* We can't handle an exported symbol that is not in | |
1895 | the code or data segment. */ | |
1896 | bfd_set_error (bfd_error_invalid_operation); | |
1897 | goto error_return; | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | if (write_export_func) | |
1902 | { | |
1903 | if ((*write_export_func) (abfd, sym, offset) == false) | |
1904 | goto error_return; | |
1905 | } | |
1906 | else | |
1907 | { | |
1908 | len = strlen (sym->name); | |
1909 | if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) | |
1910 | != sizeof (bfd_byte)) | |
1911 | || bfd_write (sym->name, len, 1, abfd) != len) | |
1912 | goto error_return; | |
1913 | ||
1914 | put_word (abfd, offset, temp); | |
1915 | if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
1916 | goto error_return; | |
1917 | } | |
1918 | } | |
1919 | nlm_fixed_header (abfd)->numberOfPublics = c; | |
1920 | ||
1921 | /* Write out the debugging records. The NLM conversion program | |
1922 | wants to be able to inhibit this, so as a special hack if | |
1923 | debugInfoOffset is set to -1 we don't write any debugging | |
1924 | information. This can not be handled by fiddling with the | |
1925 | symbol table, because exported symbols appear in both the | |
1926 | exported symbol list and the debugging information. */ | |
1927 | if (nlm_fixed_header (abfd)->debugInfoOffset == (file_ptr) - 1) | |
1928 | { | |
1929 | nlm_fixed_header (abfd)->debugInfoOffset = 0; | |
1930 | nlm_fixed_header (abfd)->numberOfDebugRecords = 0; | |
1931 | } | |
1932 | else | |
1933 | { | |
1934 | nlm_fixed_header (abfd)->debugInfoOffset = bfd_tell (abfd); | |
1935 | c = 0; | |
1936 | sym_ptr_ptr = bfd_get_outsymbols (abfd); | |
1937 | sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); | |
1938 | for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) | |
1939 | { | |
1940 | asymbol *sym; | |
1941 | bfd_byte type, len; | |
1942 | bfd_vma offset; | |
1943 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; | |
1944 | ||
1945 | sym = *sym_ptr_ptr; | |
1946 | ||
1947 | /* The NLM notion of a debugging symbol is actually what | |
1948 | BFD calls a local or global symbol. What BFD calls a | |
1949 | debugging symbol NLM does not understand at all. */ | |
1950 | if ((sym->flags & (BSF_LOCAL | BSF_GLOBAL | BSF_EXPORT)) == 0 | |
1951 | || (sym->flags & BSF_DEBUGGING) != 0 | |
1952 | || bfd_is_und_section (bfd_get_section (sym))) | |
1953 | continue; | |
1954 | ||
1955 | ++c; | |
1956 | ||
1957 | offset = bfd_asymbol_value (sym); | |
1958 | sec = sym->section; | |
1959 | if (sec->flags & SEC_CODE) | |
1960 | { | |
1961 | offset -= nlm_get_text_low (abfd); | |
1962 | type = 1; | |
1963 | } | |
1964 | else if (sec->flags & (SEC_DATA | SEC_ALLOC)) | |
1965 | { | |
1966 | /* SEC_ALLOC is for the .bss section. */ | |
1967 | offset -= nlm_get_data_low (abfd); | |
1968 | type = 0; | |
1969 | } | |
1970 | else | |
1971 | type = 2; | |
1972 | ||
1973 | /* The type is 0 for data, 1 for code, 2 for absolute. */ | |
1974 | if (bfd_write (&type, sizeof (bfd_byte), 1, abfd) | |
1975 | != sizeof (bfd_byte)) | |
1976 | goto error_return; | |
1977 | ||
1978 | put_word (abfd, offset, temp); | |
1979 | if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
1980 | goto error_return; | |
1981 | ||
1982 | len = strlen (sym->name); | |
1983 | if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) | |
1984 | != sizeof (bfd_byte)) | |
1985 | || bfd_write (sym->name, len, 1, abfd) != len) | |
1986 | goto error_return; | |
1987 | } | |
1988 | nlm_fixed_header (abfd)->numberOfDebugRecords = c; | |
1989 | } | |
1990 | } | |
1991 | ||
1992 | /* NLMLINK fills in offset values even if there is no data, so we do | |
1993 | the same. */ | |
1994 | last = bfd_tell (abfd); | |
1995 | if (nlm_fixed_header (abfd)->codeImageOffset == 0) | |
1996 | nlm_fixed_header (abfd)->codeImageOffset = last; | |
1997 | if (nlm_fixed_header (abfd)->dataImageOffset == 0) | |
1998 | nlm_fixed_header (abfd)->dataImageOffset = last; | |
1999 | if (nlm_fixed_header (abfd)->customDataOffset == 0) | |
2000 | nlm_fixed_header (abfd)->customDataOffset = last; | |
2001 | if (nlm_fixed_header (abfd)->moduleDependencyOffset == 0) | |
2002 | nlm_fixed_header (abfd)->moduleDependencyOffset = last; | |
2003 | if (nlm_fixed_header (abfd)->relocationFixupOffset == 0) | |
2004 | nlm_fixed_header (abfd)->relocationFixupOffset = last; | |
2005 | if (nlm_fixed_header (abfd)->externalReferencesOffset == 0) | |
2006 | nlm_fixed_header (abfd)->externalReferencesOffset = last; | |
2007 | if (nlm_fixed_header (abfd)->publicsOffset == 0) | |
2008 | nlm_fixed_header (abfd)->publicsOffset = last; | |
2009 | if (nlm_fixed_header (abfd)->debugInfoOffset == 0) | |
2010 | nlm_fixed_header (abfd)->debugInfoOffset = last; | |
2011 | ||
2012 | /* At this point everything has been written out except the fixed | |
2013 | header. */ | |
2014 | memcpy (nlm_fixed_header (abfd)->signature, nlm_signature (abfd), | |
2015 | NLM_SIGNATURE_SIZE); | |
2016 | nlm_fixed_header (abfd)->version = NLM_HEADER_VERSION; | |
2017 | nlm_fixed_header (abfd)->codeStartOffset = | |
2018 | (bfd_get_start_address (abfd) | |
2019 | - nlm_get_text_low (abfd)); | |
2020 | ||
2021 | /* We have no convenient way for the caller to pass in the exit | |
2022 | procedure or the check unload procedure, so the caller must set | |
2023 | the values in the header to the values of the symbols. */ | |
2024 | nlm_fixed_header (abfd)->exitProcedureOffset -= nlm_get_text_low (abfd); | |
2025 | if (nlm_fixed_header (abfd)->checkUnloadProcedureOffset != 0) | |
2026 | nlm_fixed_header (abfd)->checkUnloadProcedureOffset -= | |
2027 | nlm_get_text_low (abfd); | |
2028 | ||
2029 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) | |
2030 | goto error_return; | |
2031 | ||
2032 | write_prefix_func = nlm_write_prefix_func (abfd); | |
2033 | if (write_prefix_func) | |
2034 | { | |
2035 | if ((*write_prefix_func) (abfd) == false) | |
2036 | goto error_return; | |
2037 | } | |
2038 | ||
2039 | BFD_ASSERT ((bfd_size_type) bfd_tell (abfd) | |
2040 | == nlm_optional_prefix_size (abfd)); | |
2041 | ||
2042 | nlm_swap_fixed_header_out (abfd, nlm_fixed_header (abfd), fixed_header); | |
2043 | if (bfd_write (fixed_header, nlm_fixed_header_size (abfd), 1, abfd) | |
2044 | != nlm_fixed_header_size (abfd)) | |
2045 | goto error_return; | |
2046 | ||
2047 | if (fixed_header != NULL) | |
2048 | free (fixed_header); | |
2049 | return true; | |
2050 | ||
2051 | error_return: | |
2052 | if (fixed_header != NULL) | |
2053 | free (fixed_header); | |
2054 | return false; | |
2055 | } |