Commit | Line | Data |
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c3e964b9 FF |
1 | /* NLM (NetWare Loadable Module) executable support for BFD. |
2 | Copyright (C) 1993 Free Software Foundation, Inc. | |
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., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
22 | ||
23 | #include <string.h> /* For strrchr and friends */ | |
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include "libbfd.h" | |
27 | #include "libnlm.h" | |
28 | ||
b6e7553c FF |
29 | /* The functions in this file do not use the names they appear to use. |
30 | This file is actually compiled multiple times, once for each size | |
31 | of NLM target we are using. At each size we use a different name, | |
32 | constructed by the macro nlmNAME. For example, the function which | |
33 | is named nlm_symbol_type below is actually named nlm32_symbol_type | |
34 | in the final executable. */ | |
35 | ||
36 | #define Nlm_External_Fixed_Header NlmNAME(External_Fixed_Header) | |
37 | #define Nlm_External_Version_Header NlmNAME(External_Version_Header) | |
38 | #define Nlm_External_Copyright_Header NlmNAME(External_Copyright_Header) | |
39 | #define Nlm_External_Extended_Header NlmNAME(External_Extended_Header) | |
40 | #define Nlm_External_Custom_Header NlmNAME(External_Custom_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) | |
c3e964b9 | 53 | |
cdbfad1c ILT |
54 | #define nlm_swap_fixed_header_in(abfd,src,dst) \ |
55 | (nlm_swap_fixed_header_in_func(abfd))(abfd,src,dst) | |
56 | #define nlm_swap_fixed_header_out(abfd,src,dst) \ | |
57 | (nlm_swap_fixed_header_out_func(abfd))(abfd,src,dst) | |
58 | ||
c3e964b9 FF |
59 | /* Forward declarations of static functions */ |
60 | ||
61 | static boolean add_bfd_section | |
62 | PARAMS ((bfd *, char *, file_ptr, bfd_size_type, flagword)); | |
b6e7553c FF |
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 *)); | |
c3e964b9 FF |
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 | bfd_target * | |
94 | DEFUN (nlm_object_p, (abfd), bfd * abfd) | |
95 | { | |
cdbfad1c ILT |
96 | struct nlm_obj_tdata *preserved_tdata = nlm_tdata (abfd); |
97 | boolean (*backend_object_p) PARAMS ((bfd *)); | |
98 | PTR x_fxdhdr; | |
99 | Nlm_Internal_Fixed_Header *i_fxdhdrp; | |
100 | const char *signature; | |
b6e7553c | 101 | enum bfd_architecture arch; |
c3e964b9 | 102 | |
cdbfad1c ILT |
103 | /* Some NLM formats have a prefix before the standard NLM fixed |
104 | header. */ | |
105 | backend_object_p = nlm_backend_object_p_func (abfd); | |
106 | if (backend_object_p) | |
107 | { | |
108 | if (! (*backend_object_p) (abfd)) | |
109 | goto got_wrong_format_error; | |
110 | } | |
111 | ||
c3e964b9 FF |
112 | /* Read in the fixed length portion of the NLM header in external format. */ |
113 | ||
cdbfad1c ILT |
114 | x_fxdhdr = alloca (nlm_fixed_header_size (abfd)); |
115 | ||
116 | if (bfd_read ((PTR) x_fxdhdr, nlm_fixed_header_size (abfd), 1, abfd) != | |
117 | nlm_fixed_header_size (abfd)) | |
c3e964b9 FF |
118 | { |
119 | bfd_error = system_call_error; | |
cdbfad1c | 120 | goto got_no_match; |
c3e964b9 FF |
121 | } |
122 | ||
cdbfad1c ILT |
123 | /* Allocate an instance of the nlm_obj_tdata structure and hook it up to |
124 | the tdata pointer in the bfd. */ | |
c3e964b9 | 125 | |
cdbfad1c ILT |
126 | nlm_tdata (abfd) = (struct nlm_obj_tdata *) |
127 | bfd_zalloc (abfd, sizeof (struct nlm_obj_tdata)); | |
128 | if (nlm_tdata (abfd) == NULL) | |
c3e964b9 | 129 | { |
cdbfad1c ILT |
130 | bfd_error = no_memory; |
131 | goto got_no_match; | |
c3e964b9 FF |
132 | } |
133 | ||
cdbfad1c ILT |
134 | i_fxdhdrp = nlm_fixed_header (abfd); |
135 | nlm_swap_fixed_header_in (abfd, x_fxdhdr, i_fxdhdrp); | |
136 | ||
137 | /* Check to see if we have an NLM file for this backend by matching | |
138 | the NLM signature. */ | |
139 | ||
140 | signature = nlm_signature (abfd); | |
141 | if (signature != NULL | |
142 | && *signature != '\0' | |
143 | && strncmp ((char *) i_fxdhdrp->signature, signature, | |
144 | NLM_SIGNATURE_SIZE) != 0) | |
145 | goto got_wrong_format_error; | |
146 | ||
c3e964b9 FF |
147 | /* There's no supported way to discover the endianess of an NLM, so test for |
148 | a sane version number after doing byte swapping appropriate for this | |
149 | XVEC. (Hack alert!) */ | |
150 | ||
cdbfad1c ILT |
151 | if (i_fxdhdrp->version > 0xFFFF) |
152 | goto got_wrong_format_error; | |
c3e964b9 FF |
153 | |
154 | /* There's no supported way to check for 32 bit versus 64 bit addresses, | |
155 | so ignore this distinction for now. (FIXME) */ | |
156 | ||
45a78ebb ILT |
157 | /* FIXME: Any return(NULL) exits below here will leak memory (tdata). |
158 | And a memory leak also means we lost the real tdata info we wanted | |
159 | to save, because it was in the leaked memory. */ | |
c3e964b9 FF |
160 | |
161 | /* Swap in the rest of the fixed length header. */ | |
162 | ||
c3e964b9 FF |
163 | if (!nlm_swap_variable_header_in (abfd) |
164 | || !nlm_swap_auxiliary_headers_in (abfd) | |
165 | || !add_bfd_section (abfd, NLM_CODE_NAME, | |
166 | i_fxdhdrp -> codeImageOffset, | |
167 | i_fxdhdrp -> codeImageSize, | |
b6e7553c FF |
168 | (SEC_CODE | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
169 | | SEC_RELOC)) | |
c3e964b9 FF |
170 | || !add_bfd_section (abfd, NLM_INITIALIZED_DATA_NAME, |
171 | i_fxdhdrp -> dataImageOffset, | |
172 | i_fxdhdrp -> dataImageSize, | |
b6e7553c FF |
173 | (SEC_DATA | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
174 | | SEC_RELOC)) | |
c3e964b9 FF |
175 | || !add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME, |
176 | (file_ptr) 0, | |
177 | i_fxdhdrp -> uninitializedDataSize, | |
b6e7553c | 178 | SEC_ALLOC)) |
cdbfad1c | 179 | goto got_wrong_format_error; |
c3e964b9 | 180 | |
b6e7553c FF |
181 | if (nlm_fixed_header (abfd)->numberOfRelocationFixups != 0 |
182 | || nlm_fixed_header (abfd)->numberOfExternalReferences != 0) | |
183 | abfd->flags |= HAS_RELOC; | |
184 | if (nlm_fixed_header (abfd)->numberOfPublics != 0 | |
45a78ebb ILT |
185 | || nlm_fixed_header (abfd)->numberOfDebugRecords != 0 |
186 | || nlm_fixed_header (abfd)->numberOfExternalReferences != 0) | |
b6e7553c FF |
187 | abfd->flags |= HAS_SYMS; |
188 | ||
189 | arch = nlm_architecture (abfd); | |
190 | if (arch != bfd_arch_unknown) | |
191 | bfd_default_set_arch_mach (abfd, arch, (unsigned long) 0); | |
192 | ||
c3e964b9 | 193 | return (abfd -> xvec); |
cdbfad1c ILT |
194 | |
195 | got_wrong_format_error: | |
196 | bfd_error = wrong_format; | |
197 | got_no_match: | |
198 | nlm_tdata (abfd) = preserved_tdata; | |
199 | return (NULL); | |
c3e964b9 FF |
200 | } |
201 | ||
202 | /* Add a section to the bfd. */ | |
203 | ||
204 | static boolean | |
205 | DEFUN (add_bfd_section, (abfd, name, offset, size, flags), | |
206 | bfd *abfd AND | |
207 | char *name AND | |
208 | file_ptr offset AND | |
209 | bfd_size_type size AND | |
210 | flagword flags) | |
211 | { | |
212 | asection *newsect; | |
213 | ||
214 | newsect = bfd_make_section (abfd, name); | |
215 | if (newsect == NULL) | |
216 | { | |
217 | return (false); | |
218 | } | |
219 | newsect -> vma = 0; /* NLM's are relocatable. */ | |
220 | newsect -> _raw_size = size; | |
221 | newsect -> filepos = offset; | |
222 | newsect -> flags = flags; | |
223 | newsect -> alignment_power = bfd_log2 (0); /* FIXME */ | |
224 | return (true); | |
225 | } | |
226 | ||
c3e964b9 FF |
227 | /* Read and swap in the variable length header. All the fields must |
228 | exist in the NLM, and must exist in the order they are read here. */ | |
229 | ||
230 | static boolean | |
231 | DEFUN (nlm_swap_variable_header_in, (abfd), | |
232 | bfd * abfd) | |
233 | { | |
b6e7553c | 234 | unsigned char temp [NLM_TARGET_LONG_SIZE]; |
c3e964b9 FF |
235 | |
236 | /* Read the description length and text members. */ | |
237 | ||
238 | if (bfd_read ((PTR) &nlm_variable_header (abfd) -> descriptionLength, | |
239 | sizeof (nlm_variable_header (abfd) -> descriptionLength), | |
240 | 1, abfd) != | |
241 | sizeof (nlm_variable_header (abfd) -> descriptionLength)) | |
242 | { | |
243 | bfd_error = system_call_error; | |
244 | return (false); | |
245 | } | |
246 | if (bfd_read ((PTR) nlm_variable_header (abfd) -> descriptionText, | |
247 | nlm_variable_header (abfd) -> descriptionLength + 1, | |
248 | 1, abfd) != | |
249 | nlm_variable_header (abfd) -> descriptionLength + 1) | |
250 | { | |
251 | bfd_error = system_call_error; | |
252 | return (false); | |
253 | } | |
254 | ||
255 | /* Read and convert the stackSize field. */ | |
256 | ||
f03b1f0d | 257 | if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) |
c3e964b9 FF |
258 | { |
259 | bfd_error = system_call_error; | |
260 | return (false); | |
261 | } | |
262 | nlm_variable_header (abfd) -> stackSize = get_word (abfd, (bfd_byte *) temp); | |
263 | ||
264 | /* Read and convert the reserved field. */ | |
265 | ||
f03b1f0d | 266 | if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) |
c3e964b9 FF |
267 | { |
268 | bfd_error = system_call_error; | |
269 | return (false); | |
270 | } | |
271 | nlm_variable_header (abfd) -> reserved = get_word (abfd, (bfd_byte *) temp); | |
272 | ||
273 | /* Read the oldThreadName field. This field is a fixed length string. */ | |
274 | ||
275 | if (bfd_read ((PTR) nlm_variable_header (abfd) -> oldThreadName, | |
276 | sizeof (nlm_variable_header (abfd) -> oldThreadName), | |
277 | 1, abfd) != | |
278 | sizeof (nlm_variable_header (abfd) -> oldThreadName)) | |
279 | { | |
280 | bfd_error = system_call_error; | |
281 | return (false); | |
282 | } | |
283 | ||
284 | /* Read the screen name length and text members. */ | |
285 | ||
286 | if (bfd_read ((PTR) &nlm_variable_header (abfd) -> screenNameLength, | |
287 | sizeof (nlm_variable_header (abfd) -> screenNameLength), | |
288 | 1, abfd) != | |
289 | sizeof (nlm_variable_header (abfd) -> screenNameLength)) | |
290 | { | |
291 | bfd_error = system_call_error; | |
292 | return (false); | |
293 | } | |
294 | if (bfd_read ((PTR) nlm_variable_header (abfd) -> screenName, | |
295 | nlm_variable_header (abfd) -> screenNameLength + 1, | |
296 | 1, abfd) != | |
297 | nlm_variable_header (abfd) -> screenNameLength + 1) | |
298 | { | |
299 | bfd_error = system_call_error; | |
300 | return (false); | |
301 | } | |
302 | ||
303 | /* Read the thread name length and text members. */ | |
304 | ||
305 | if (bfd_read ((PTR) &nlm_variable_header (abfd) -> threadNameLength, | |
306 | sizeof (nlm_variable_header (abfd) -> threadNameLength), | |
307 | 1, abfd) != | |
308 | sizeof (nlm_variable_header (abfd) -> threadNameLength)) | |
309 | { | |
310 | bfd_error = system_call_error; | |
311 | return (false); | |
312 | } | |
313 | if (bfd_read ((PTR) nlm_variable_header (abfd) -> threadName, | |
314 | nlm_variable_header (abfd) -> threadNameLength + 1, | |
315 | 1, abfd) != | |
316 | nlm_variable_header (abfd) -> threadNameLength + 1) | |
317 | { | |
318 | bfd_error = system_call_error; | |
319 | return (false); | |
320 | } | |
321 | return (true); | |
322 | } | |
323 | ||
b6e7553c FF |
324 | /* Swap and write out the variable length header. All the fields must |
325 | exist in the NLM, and must exist in this order. */ | |
326 | ||
327 | static boolean | |
328 | DEFUN (nlm_swap_variable_header_out, (abfd), | |
329 | bfd * abfd) | |
330 | { | |
331 | unsigned char temp [NLM_TARGET_LONG_SIZE]; | |
332 | ||
333 | /* Write the description length and text members. */ | |
334 | ||
335 | if (bfd_write ((PTR) &nlm_variable_header (abfd) -> descriptionLength, | |
336 | sizeof (nlm_variable_header (abfd) -> descriptionLength), | |
337 | 1, abfd) != | |
338 | sizeof (nlm_variable_header (abfd) -> descriptionLength)) | |
339 | { | |
340 | bfd_error = system_call_error; | |
341 | return (false); | |
342 | } | |
343 | if (bfd_write ((PTR) nlm_variable_header (abfd) -> descriptionText, | |
344 | nlm_variable_header (abfd) -> descriptionLength + 1, | |
345 | 1, abfd) != | |
346 | nlm_variable_header (abfd) -> descriptionLength + 1) | |
347 | { | |
348 | bfd_error = system_call_error; | |
349 | return (false); | |
350 | } | |
351 | ||
352 | /* Convert and write the stackSize field. */ | |
353 | ||
354 | put_word (abfd, (bfd_vma) nlm_variable_header (abfd) -> stackSize, | |
355 | (bfd_byte *) temp); | |
356 | if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
357 | { | |
358 | bfd_error = system_call_error; | |
359 | return (false); | |
360 | } | |
361 | ||
362 | /* Convert and write the reserved field. */ | |
363 | ||
364 | put_word (abfd, (bfd_vma) nlm_variable_header (abfd) -> reserved, | |
365 | (bfd_byte *) temp); | |
366 | if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
367 | { | |
368 | bfd_error = system_call_error; | |
369 | return (false); | |
370 | } | |
371 | ||
372 | /* Write the oldThreadName field. This field is a fixed length string. */ | |
373 | ||
374 | if (bfd_write ((PTR) nlm_variable_header (abfd) -> oldThreadName, | |
375 | sizeof (nlm_variable_header (abfd) -> oldThreadName), | |
376 | 1, abfd) != | |
377 | sizeof (nlm_variable_header (abfd) -> oldThreadName)) | |
378 | { | |
379 | bfd_error = system_call_error; | |
380 | return (false); | |
381 | } | |
382 | ||
383 | /* Write the screen name length and text members. */ | |
384 | ||
385 | if (bfd_write ((PTR) &nlm_variable_header (abfd) -> screenNameLength, | |
386 | sizeof (nlm_variable_header (abfd) -> screenNameLength), | |
387 | 1, abfd) != | |
388 | sizeof (nlm_variable_header (abfd) -> screenNameLength)) | |
389 | { | |
390 | bfd_error = system_call_error; | |
391 | return (false); | |
392 | } | |
393 | if (bfd_write ((PTR) nlm_variable_header (abfd) -> screenName, | |
394 | nlm_variable_header (abfd) -> screenNameLength + 1, | |
395 | 1, abfd) != | |
396 | nlm_variable_header (abfd) -> screenNameLength + 1) | |
397 | { | |
398 | bfd_error = system_call_error; | |
399 | return (false); | |
400 | } | |
401 | ||
402 | /* Write the thread name length and text members. */ | |
403 | ||
404 | if (bfd_write ((PTR) &nlm_variable_header (abfd) -> threadNameLength, | |
405 | sizeof (nlm_variable_header (abfd) -> threadNameLength), | |
406 | 1, abfd) != | |
407 | sizeof (nlm_variable_header (abfd) -> threadNameLength)) | |
408 | { | |
409 | bfd_error = system_call_error; | |
410 | return (false); | |
411 | } | |
412 | if (bfd_write ((PTR) nlm_variable_header (abfd) -> threadName, | |
413 | nlm_variable_header (abfd) -> threadNameLength + 1, | |
414 | 1, abfd) != | |
415 | nlm_variable_header (abfd) -> threadNameLength + 1) | |
416 | { | |
417 | bfd_error = system_call_error; | |
418 | return (false); | |
419 | } | |
420 | return (true); | |
421 | } | |
422 | ||
c3e964b9 FF |
423 | /* Read and swap in the contents of all the auxiliary headers. Because of |
424 | the braindead design, we have to do strcmps on strings of indeterminate | |
425 | length to figure out what each auxiliary header is. Even worse, we have | |
426 | no way of knowing how many auxiliary headers there are or where the end | |
427 | of the auxiliary headers are, except by finding something that doesn't | |
428 | look like a known auxiliary header. This means that the first new type | |
429 | of auxiliary header added will break all existing tools that don't | |
430 | recognize it. */ | |
431 | ||
432 | static boolean | |
433 | DEFUN (nlm_swap_auxiliary_headers_in, (abfd), | |
434 | bfd * abfd) | |
435 | { | |
cdbfad1c | 436 | char tempstr [16]; |
c3e964b9 FF |
437 | long position; |
438 | ||
439 | for (;;) | |
440 | { | |
441 | position = bfd_tell (abfd); | |
442 | if (bfd_read ((PTR) tempstr, sizeof (tempstr), 1, abfd) != | |
443 | sizeof (tempstr)) | |
444 | { | |
445 | bfd_error = system_call_error; | |
446 | return (false); | |
447 | } | |
448 | if (bfd_seek (abfd, position, SEEK_SET) == -1) | |
449 | { | |
450 | bfd_error = system_call_error; | |
451 | return (false); | |
452 | } | |
453 | if (strncmp (tempstr, "VeRsIoN#", 8) == 0) | |
454 | { | |
455 | Nlm_External_Version_Header thdr; | |
456 | if (bfd_read ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
457 | { | |
458 | bfd_error = system_call_error; | |
459 | return (false); | |
460 | } | |
461 | memcpy (nlm_version_header (abfd) -> stamp, thdr.stamp, | |
462 | sizeof (thdr.stamp)); | |
463 | nlm_version_header (abfd) -> majorVersion = | |
464 | get_word (abfd, (bfd_byte *) thdr.majorVersion); | |
465 | nlm_version_header (abfd) -> minorVersion = | |
466 | get_word (abfd, (bfd_byte *) thdr.minorVersion); | |
467 | nlm_version_header (abfd) -> revision = | |
468 | get_word (abfd, (bfd_byte *) thdr.revision); | |
469 | nlm_version_header (abfd) -> year = | |
470 | get_word (abfd, (bfd_byte *) thdr.year); | |
471 | nlm_version_header (abfd) -> month = | |
472 | get_word (abfd, (bfd_byte *) thdr.month); | |
473 | nlm_version_header (abfd) -> day = | |
474 | get_word (abfd, (bfd_byte *) thdr.day); | |
475 | } | |
476 | else if (strncmp (tempstr, "MeSsAgEs", 8) == 0) | |
477 | { | |
478 | Nlm_External_Extended_Header thdr; | |
479 | if (bfd_read ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
480 | { | |
481 | bfd_error = system_call_error; | |
482 | return (false); | |
483 | } | |
484 | memcpy (nlm_extended_header (abfd) -> stamp, thdr.stamp, | |
485 | sizeof (thdr.stamp)); | |
486 | nlm_extended_header (abfd) -> languageID = | |
487 | get_word (abfd, (bfd_byte *) thdr.languageID); | |
488 | nlm_extended_header (abfd) -> messageFileOffset = | |
489 | get_word (abfd, (bfd_byte *) thdr.messageFileOffset); | |
490 | nlm_extended_header (abfd) -> messageFileLength = | |
491 | get_word (abfd, (bfd_byte *) thdr.messageFileLength); | |
492 | nlm_extended_header (abfd) -> messageCount = | |
493 | get_word (abfd, (bfd_byte *) thdr.messageCount); | |
494 | nlm_extended_header (abfd) -> helpFileOffset = | |
495 | get_word (abfd, (bfd_byte *) thdr.helpFileOffset); | |
496 | nlm_extended_header (abfd) -> helpFileLength = | |
497 | get_word (abfd, (bfd_byte *) thdr.helpFileLength); | |
498 | nlm_extended_header (abfd) -> RPCDataOffset = | |
499 | get_word (abfd, (bfd_byte *) thdr.RPCDataOffset); | |
500 | nlm_extended_header (abfd) -> RPCDataLength = | |
501 | get_word (abfd, (bfd_byte *) thdr.RPCDataLength); | |
502 | nlm_extended_header (abfd) -> sharedCodeOffset = | |
503 | get_word (abfd, (bfd_byte *) thdr.sharedCodeOffset); | |
504 | nlm_extended_header (abfd) -> sharedCodeLength = | |
505 | get_word (abfd, (bfd_byte *) thdr.sharedCodeLength); | |
506 | nlm_extended_header (abfd) -> sharedDataOffset = | |
507 | get_word (abfd, (bfd_byte *) thdr.sharedDataOffset); | |
508 | nlm_extended_header (abfd) -> sharedDataLength = | |
509 | get_word (abfd, (bfd_byte *) thdr.sharedDataLength); | |
510 | nlm_extended_header (abfd) -> sharedRelocationFixupOffset = | |
511 | get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupOffset); | |
512 | nlm_extended_header (abfd) -> sharedRelocationFixupCount = | |
513 | get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupCount); | |
514 | nlm_extended_header (abfd) -> sharedExternalReferenceOffset = | |
515 | get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceOffset); | |
516 | nlm_extended_header (abfd) -> sharedExternalReferenceCount = | |
517 | get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceCount); | |
518 | nlm_extended_header (abfd) -> sharedPublicsOffset = | |
519 | get_word (abfd, (bfd_byte *) thdr.sharedPublicsOffset); | |
520 | nlm_extended_header (abfd) -> sharedPublicsCount = | |
521 | get_word (abfd, (bfd_byte *) thdr.sharedPublicsCount); | |
cdbfad1c ILT |
522 | nlm_extended_header (abfd) -> sharedDebugRecordOffset = |
523 | get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordOffset); | |
524 | nlm_extended_header (abfd) -> sharedDebugRecordCount = | |
525 | get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordCount); | |
c3e964b9 FF |
526 | nlm_extended_header (abfd) -> SharedInitializationOffset = |
527 | get_word (abfd, (bfd_byte *) thdr.sharedInitializationOffset); | |
528 | nlm_extended_header (abfd) -> SharedExitProcedureOffset = | |
529 | get_word (abfd, (bfd_byte *) thdr.SharedExitProcedureOffset); | |
530 | nlm_extended_header (abfd) -> productID = | |
531 | get_word (abfd, (bfd_byte *) thdr.productID); | |
532 | nlm_extended_header (abfd) -> reserved0 = | |
533 | get_word (abfd, (bfd_byte *) thdr.reserved0); | |
534 | nlm_extended_header (abfd) -> reserved1 = | |
535 | get_word (abfd, (bfd_byte *) thdr.reserved1); | |
536 | nlm_extended_header (abfd) -> reserved2 = | |
537 | get_word (abfd, (bfd_byte *) thdr.reserved2); | |
538 | nlm_extended_header (abfd) -> reserved3 = | |
539 | get_word (abfd, (bfd_byte *) thdr.reserved3); | |
540 | nlm_extended_header (abfd) -> reserved4 = | |
541 | get_word (abfd, (bfd_byte *) thdr.reserved4); | |
542 | nlm_extended_header (abfd) -> reserved5 = | |
543 | get_word (abfd, (bfd_byte *) thdr.reserved5); | |
544 | } | |
545 | else if (strncmp (tempstr, "CuStHeAd", 8) == 0) | |
546 | { | |
547 | Nlm_External_Custom_Header thdr; | |
548 | if (bfd_read ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
549 | { | |
550 | bfd_error = system_call_error; | |
551 | return (false); | |
552 | } | |
553 | memcpy (nlm_custom_header (abfd) -> stamp, thdr.stamp, | |
554 | sizeof (thdr.stamp)); | |
555 | nlm_custom_header (abfd) -> dataLength = | |
556 | get_word (abfd, (bfd_byte *) thdr.dataLength); | |
557 | nlm_custom_header (abfd) -> debugRecOffset = | |
558 | get_word (abfd, (bfd_byte *) thdr.debugRecOffset); | |
559 | nlm_custom_header (abfd) -> debugRecLength = | |
560 | get_word (abfd, (bfd_byte *) thdr.debugRecLength); | |
561 | } | |
562 | else if (strncmp (tempstr, "CoPyRiGhT=", 10) == 0) | |
563 | { | |
45a78ebb ILT |
564 | if (bfd_read ((PTR) &nlm_copyright_header (abfd)->stamp, |
565 | sizeof (nlm_copyright_header (abfd)->stamp), | |
566 | 1, abfd) | |
567 | != sizeof (nlm_copyright_header (abfd)->stamp)) | |
568 | { | |
569 | bfd_error = system_call_error; | |
570 | return (false); | |
571 | } | |
572 | if (bfd_read ((PTR) &(nlm_copyright_header (abfd) | |
573 | ->copyrightMessageLength), | |
574 | 1, 1, abfd) != 1) | |
c3e964b9 FF |
575 | { |
576 | bfd_error = system_call_error; | |
577 | return (false); | |
578 | } | |
c3e964b9 FF |
579 | /* The copyright message is a variable length string. */ |
580 | if (bfd_read ((PTR) nlm_copyright_header (abfd) -> copyrightMessage, | |
581 | nlm_copyright_header (abfd) -> copyrightMessageLength + 1, | |
582 | 1, abfd) != | |
583 | nlm_copyright_header (abfd) -> copyrightMessageLength + 1) | |
584 | { | |
585 | bfd_error = system_call_error; | |
586 | return (false); | |
587 | } | |
588 | } | |
589 | else | |
590 | { | |
591 | break; | |
592 | } | |
593 | } | |
b6e7553c FF |
594 | return (true); |
595 | } | |
596 | ||
597 | /* Return whether there is a non-zero byte in a memory block. */ | |
598 | ||
599 | static boolean | |
600 | find_nonzero (buf, size) | |
601 | PTR buf; | |
602 | size_t size; | |
603 | { | |
604 | char *p = (char *) buf; | |
605 | ||
606 | while (size-- != 0) | |
607 | if (*p++ != 0) | |
608 | return true; | |
609 | return false; | |
610 | } | |
611 | ||
612 | /* Swap out the contents of the auxiliary headers. We create those | |
613 | auxiliary headers which have been set non-zero. We do not require | |
614 | the caller to set up the stamp fields. */ | |
615 | ||
616 | static boolean | |
617 | nlm_swap_auxiliary_headers_out (abfd) | |
618 | bfd *abfd; | |
619 | { | |
620 | /* Write out the version header if there is one. */ | |
621 | if (find_nonzero ((PTR) nlm_version_header (abfd), | |
622 | sizeof (Nlm_Internal_Version_Header))) | |
623 | { | |
624 | Nlm_External_Version_Header thdr; | |
625 | ||
626 | memcpy (thdr.stamp, "VeRsIoN#", 8); | |
627 | put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> majorVersion, | |
628 | (bfd_byte *) thdr.majorVersion); | |
629 | put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> minorVersion, | |
630 | (bfd_byte *) thdr.minorVersion); | |
631 | put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> revision, | |
632 | (bfd_byte *) thdr.revision); | |
633 | put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> year, | |
634 | (bfd_byte *) thdr.year); | |
635 | put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> month, | |
636 | (bfd_byte *) thdr.month); | |
637 | put_word (abfd, (bfd_vma) nlm_version_header (abfd) -> day, | |
638 | (bfd_byte *) thdr.day); | |
639 | if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
640 | { | |
641 | bfd_error = system_call_error; | |
642 | return false; | |
643 | } | |
644 | } | |
645 | ||
646 | /* Write out the extended header if there is one. */ | |
647 | if (find_nonzero ((PTR) nlm_extended_header (abfd), | |
648 | sizeof (Nlm_Internal_Extended_Header))) | |
649 | { | |
650 | Nlm_External_Extended_Header thdr; | |
651 | ||
652 | memcpy (thdr.stamp, "MeSsAgEs", 8); | |
653 | put_word (abfd, | |
654 | (bfd_vma) nlm_extended_header (abfd) -> languageID, | |
655 | (bfd_byte *) thdr.languageID); | |
656 | put_word (abfd, | |
657 | (bfd_vma) nlm_extended_header (abfd) -> messageFileOffset, | |
658 | (bfd_byte *) thdr.messageFileOffset); | |
659 | put_word (abfd, | |
660 | (bfd_vma) nlm_extended_header (abfd) -> messageFileLength, | |
661 | (bfd_byte *) thdr.messageFileLength); | |
662 | put_word (abfd, | |
663 | (bfd_vma) nlm_extended_header (abfd) -> messageCount, | |
664 | (bfd_byte *) thdr.messageCount); | |
665 | put_word (abfd, | |
666 | (bfd_vma) nlm_extended_header (abfd) -> helpFileOffset, | |
667 | (bfd_byte *) thdr.helpFileOffset); | |
668 | put_word (abfd, | |
669 | (bfd_vma) nlm_extended_header (abfd) -> helpFileLength, | |
670 | (bfd_byte *) thdr.helpFileLength); | |
671 | put_word (abfd, | |
672 | (bfd_vma) nlm_extended_header (abfd) -> RPCDataOffset, | |
673 | (bfd_byte *) thdr.RPCDataOffset); | |
674 | put_word (abfd, | |
675 | (bfd_vma) nlm_extended_header (abfd) -> RPCDataLength, | |
676 | (bfd_byte *) thdr.RPCDataLength); | |
677 | put_word (abfd, | |
678 | (bfd_vma) nlm_extended_header (abfd) -> sharedCodeOffset, | |
679 | (bfd_byte *) thdr.sharedCodeOffset); | |
680 | put_word (abfd, | |
681 | (bfd_vma) nlm_extended_header (abfd) -> sharedCodeLength, | |
682 | (bfd_byte *) thdr.sharedCodeLength); | |
683 | put_word (abfd, | |
684 | (bfd_vma) nlm_extended_header (abfd) -> sharedDataOffset, | |
685 | (bfd_byte *) thdr.sharedDataOffset); | |
686 | put_word (abfd, | |
687 | (bfd_vma) nlm_extended_header (abfd) -> sharedDataLength, | |
688 | (bfd_byte *) thdr.sharedDataLength); | |
689 | put_word (abfd, | |
690 | (bfd_vma) nlm_extended_header (abfd) -> sharedRelocationFixupOffset, | |
691 | (bfd_byte *) thdr.sharedRelocationFixupOffset); | |
692 | put_word (abfd, | |
693 | (bfd_vma) nlm_extended_header (abfd) -> sharedRelocationFixupCount, | |
694 | (bfd_byte *) thdr.sharedRelocationFixupCount); | |
695 | put_word (abfd, | |
696 | (bfd_vma) nlm_extended_header (abfd) -> sharedExternalReferenceOffset, | |
697 | (bfd_byte *) thdr.sharedExternalReferenceOffset); | |
698 | put_word (abfd, | |
699 | (bfd_vma) nlm_extended_header (abfd) -> sharedExternalReferenceCount, | |
700 | (bfd_byte *) thdr.sharedExternalReferenceCount); | |
701 | put_word (abfd, | |
702 | (bfd_vma) nlm_extended_header (abfd) -> sharedPublicsOffset, | |
703 | (bfd_byte *) thdr.sharedPublicsOffset); | |
704 | put_word (abfd, | |
705 | (bfd_vma) nlm_extended_header (abfd) -> sharedPublicsCount, | |
706 | (bfd_byte *) thdr.sharedPublicsCount); | |
cdbfad1c ILT |
707 | put_word (abfd, |
708 | (bfd_vma) nlm_extended_header (abfd) -> sharedDebugRecordOffset, | |
709 | (bfd_byte *) thdr.sharedDebugRecordOffset); | |
710 | put_word (abfd, | |
711 | (bfd_vma) nlm_extended_header (abfd) -> sharedDebugRecordCount, | |
712 | (bfd_byte *) thdr.sharedDebugRecordCount); | |
b6e7553c FF |
713 | put_word (abfd, |
714 | (bfd_vma) nlm_extended_header (abfd) -> SharedInitializationOffset, | |
715 | (bfd_byte *) thdr.sharedInitializationOffset); | |
716 | put_word (abfd, | |
717 | (bfd_vma) nlm_extended_header (abfd) -> SharedExitProcedureOffset, | |
718 | (bfd_byte *) thdr.SharedExitProcedureOffset); | |
719 | put_word (abfd, | |
720 | (bfd_vma) nlm_extended_header (abfd) -> productID, | |
721 | (bfd_byte *) thdr.productID); | |
722 | put_word (abfd, | |
723 | (bfd_vma) nlm_extended_header (abfd) -> reserved0, | |
724 | (bfd_byte *) thdr.reserved0); | |
725 | put_word (abfd, | |
726 | (bfd_vma) nlm_extended_header (abfd) -> reserved1, | |
727 | (bfd_byte *) thdr.reserved1); | |
728 | put_word (abfd, | |
729 | (bfd_vma) nlm_extended_header (abfd) -> reserved2, | |
730 | (bfd_byte *) thdr.reserved2); | |
731 | put_word (abfd, | |
732 | (bfd_vma) nlm_extended_header (abfd) -> reserved3, | |
733 | (bfd_byte *) thdr.reserved3); | |
734 | put_word (abfd, | |
735 | (bfd_vma) nlm_extended_header (abfd) -> reserved4, | |
736 | (bfd_byte *) thdr.reserved4); | |
737 | put_word (abfd, | |
738 | (bfd_vma) nlm_extended_header (abfd) -> reserved5, | |
739 | (bfd_byte *) thdr.reserved5); | |
740 | if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
741 | { | |
742 | bfd_error = system_call_error; | |
743 | return false; | |
744 | } | |
745 | } | |
746 | ||
747 | /* Write out the custom header if there is one. */ | |
748 | if (find_nonzero ((PTR) nlm_custom_header (abfd), | |
749 | sizeof (Nlm_Internal_Custom_Header))) | |
750 | { | |
751 | Nlm_External_Custom_Header thdr; | |
752 | ||
753 | /* Right now we assume the custom header is always the suggested | |
754 | format for alternate debugging records. */ | |
755 | BFD_ASSERT (nlm_custom_header (abfd) -> dataLength == 8); | |
756 | ||
757 | memcpy (thdr.stamp, "CuStHeAd", 8); | |
758 | put_word (abfd, (bfd_vma) nlm_custom_header (abfd) -> dataLength, | |
759 | (bfd_byte *) thdr.dataLength); | |
760 | put_word (abfd, (bfd_vma) nlm_custom_header (abfd) -> debugRecOffset, | |
761 | (bfd_byte *) thdr.debugRecOffset); | |
762 | put_word (abfd, (bfd_vma) nlm_custom_header (abfd) -> debugRecLength, | |
763 | (bfd_byte *) thdr.debugRecLength); | |
764 | if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
765 | { | |
766 | bfd_error = system_call_error; | |
767 | return false; | |
768 | } | |
769 | } | |
770 | ||
771 | /* Write out the copyright header if there is one. */ | |
772 | if (find_nonzero ((PTR) nlm_copyright_header (abfd), | |
773 | sizeof (Nlm_Internal_Copyright_Header))) | |
774 | { | |
775 | Nlm_External_Copyright_Header thdr; | |
776 | ||
777 | memcpy (thdr.stamp, "CoPyRiGhT=", 10); | |
45a78ebb ILT |
778 | if (bfd_write ((PTR) thdr.stamp, sizeof (thdr.stamp), 1, abfd) |
779 | != sizeof (thdr.stamp)) | |
780 | { | |
781 | bfd_error = system_call_error; | |
782 | return false; | |
783 | } | |
784 | thdr.copyrightMessageLength[0] = | |
785 | nlm_copyright_header (abfd)->copyrightMessageLength; | |
786 | if (bfd_write ((PTR) thdr.copyrightMessageLength, 1, 1, abfd) != 1) | |
787 | { | |
788 | bfd_error = system_call_error; | |
789 | return false; | |
790 | } | |
b6e7553c FF |
791 | /* The copyright message is a variable length string. */ |
792 | if (bfd_write ((PTR) nlm_copyright_header (abfd) -> copyrightMessage, | |
793 | nlm_copyright_header (abfd) -> copyrightMessageLength + 1, | |
794 | 1, abfd) != | |
795 | nlm_copyright_header (abfd) -> copyrightMessageLength + 1) | |
796 | { | |
797 | bfd_error = system_call_error; | |
798 | return false; | |
799 | } | |
800 | } | |
801 | ||
802 | return true; | |
c3e964b9 FF |
803 | } |
804 | ||
805 | /* We read the NLM's public symbols and use it to generate a bfd symbol | |
806 | table (hey, it's better than nothing) on a one-for-one basis. Thus | |
807 | use the number of public symbols as the number of bfd symbols we will | |
808 | have once we actually get around to reading them in. | |
809 | ||
810 | Return the number of bytes required to hold the symtab vector, based on | |
811 | the count plus 1, since we will NULL terminate the vector allocated based | |
812 | on this size. */ | |
813 | ||
814 | unsigned int | |
815 | DEFUN (nlm_get_symtab_upper_bound, (abfd), bfd * abfd) | |
816 | { | |
817 | Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */ | |
818 | unsigned int symcount; | |
819 | unsigned int symtab_size = 0; | |
820 | ||
821 | i_fxdhdrp = nlm_fixed_header (abfd); | |
b6e7553c | 822 | symcount = (i_fxdhdrp -> numberOfPublics |
45a78ebb | 823 | + i_fxdhdrp -> numberOfDebugRecords |
b6e7553c | 824 | + i_fxdhdrp -> numberOfExternalReferences); |
c3e964b9 FF |
825 | symtab_size = (symcount + 1) * (sizeof (asymbol)); |
826 | return (symtab_size); | |
827 | } | |
828 | ||
829 | /* Note that bfd_get_symcount is guaranteed to be zero if slurping the | |
830 | symbol table fails. */ | |
831 | ||
832 | unsigned int | |
b6e7553c FF |
833 | nlm_get_symtab (abfd, alocation) |
834 | bfd *abfd; | |
835 | asymbol **alocation; | |
c3e964b9 | 836 | { |
b6e7553c FF |
837 | nlm_symbol_type *symbase; |
838 | bfd_size_type counter = 0; | |
839 | ||
840 | if (nlm_slurp_symbol_table (abfd) == false) | |
841 | return 0; | |
842 | symbase = nlm_get_symbols (abfd); | |
843 | while (counter < bfd_get_symcount (abfd)) | |
844 | { | |
845 | *alocation++ = &symbase->symbol; | |
846 | symbase++; | |
847 | counter++; | |
848 | } | |
849 | *alocation = (asymbol *) NULL; | |
850 | return bfd_get_symcount (abfd); | |
c3e964b9 FF |
851 | } |
852 | ||
b6e7553c FF |
853 | /* Make an NLM symbol. There is nothing special to do here. */ |
854 | ||
c3e964b9 | 855 | asymbol * |
b6e7553c FF |
856 | nlm_make_empty_symbol (abfd) |
857 | bfd * abfd; | |
c3e964b9 | 858 | { |
b6e7553c FF |
859 | nlm_symbol_type *new; |
860 | ||
861 | new = (nlm_symbol_type *) bfd_zalloc (abfd, sizeof (nlm_symbol_type)); | |
862 | new->symbol.the_bfd = abfd; | |
863 | return &new->symbol; | |
c3e964b9 FF |
864 | } |
865 | ||
b6e7553c FF |
866 | /* Get symbol information. */ |
867 | ||
c3e964b9 | 868 | void |
b6e7553c FF |
869 | nlm_get_symbol_info (ignore_abfd, symbol, ret) |
870 | bfd * ignore_abfd; | |
871 | asymbol * symbol; | |
872 | symbol_info * ret; | |
c3e964b9 FF |
873 | { |
874 | bfd_symbol_info (symbol, ret); | |
875 | } | |
876 | ||
b6e7553c FF |
877 | /* Print symbol information. */ |
878 | ||
879 | void | |
880 | nlm_print_symbol (abfd, afile, symbol, how) | |
881 | bfd *abfd; | |
882 | PTR afile; | |
883 | asymbol *symbol; | |
884 | bfd_print_symbol_type how; | |
c3e964b9 | 885 | { |
b6e7553c FF |
886 | FILE *file = (FILE *) afile; |
887 | ||
888 | switch (how) | |
889 | { | |
890 | case bfd_print_symbol_name: | |
891 | case bfd_print_symbol_more: | |
892 | if (symbol->name) | |
893 | fprintf (file,"%s", symbol->name); | |
894 | break; | |
895 | case bfd_print_symbol_all: | |
896 | bfd_print_symbol_vandf ((PTR) file, symbol); | |
897 | fprintf (file, " %-5s", symbol->section->name); | |
898 | if (symbol->name) | |
899 | fprintf (file," %s", symbol->name); | |
900 | break; | |
901 | } | |
c3e964b9 FF |
902 | } |
903 | ||
904 | /* Slurp in nlm symbol table. | |
905 | ||
906 | In the external (in-file) form, NLM export records are variable length, | |
907 | with the following form: | |
908 | ||
909 | 1 byte length of the symbol name (N) | |
910 | N bytes the symbol name | |
911 | 4 bytes the symbol offset from start of it's section | |
912 | ||
45a78ebb ILT |
913 | We also read in the debugging symbols and import records. Import |
914 | records are treated as undefined symbols. As we read the import | |
915 | records we also read in the associated reloc information, which is | |
916 | attached to the symbol. | |
b6e7553c FF |
917 | |
918 | The bfd symbols are copied to SYMPTRS. | |
c3e964b9 FF |
919 | |
920 | When we return, the bfd symcount is either zero or contains the correct | |
921 | number of symbols. | |
922 | */ | |
923 | ||
924 | static boolean | |
b6e7553c FF |
925 | nlm_slurp_symbol_table (abfd) |
926 | bfd *abfd; | |
c3e964b9 FF |
927 | { |
928 | Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */ | |
b6e7553c FF |
929 | bfd_size_type totsymcount; /* Number of NLM symbols */ |
930 | bfd_size_type symcount; /* Counter of NLM symbols */ | |
c3e964b9 | 931 | nlm_symbol_type *sym; /* Pointer to current bfd symbol */ |
45a78ebb ILT |
932 | unsigned char symlength; /* Symbol length read into here */ |
933 | unsigned char symtype; /* Type of debugging symbol */ | |
b6e7553c | 934 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Symbol offsets read into here */ |
cdbfad1c ILT |
935 | boolean (*read_import_func) PARAMS ((bfd *, nlm_symbol_type *)); |
936 | boolean (*set_public_section_func) PARAMS ((bfd *, nlm_symbol_type *)); | |
c3e964b9 | 937 | |
b6e7553c FF |
938 | if (nlm_get_symbols (abfd) != NULL) |
939 | return (true); | |
c3e964b9 FF |
940 | |
941 | /* Read each raw NLM symbol, using the information to create a canonical bfd | |
942 | symbol table entry. | |
943 | ||
944 | Note that we allocate the initial bfd canonical symbol buffer based on a | |
945 | one-to-one mapping of the NLM symbols to canonical symbols. We actually | |
946 | use all the NLM symbols, so there will be no space left over at the end. | |
947 | When we have all the symbols, we build the caller's pointer vector. */ | |
948 | ||
949 | abfd -> symcount = 0; | |
950 | i_fxdhdrp = nlm_fixed_header (abfd); | |
b6e7553c | 951 | totsymcount = (i_fxdhdrp -> numberOfPublics |
45a78ebb | 952 | + i_fxdhdrp -> numberOfDebugRecords |
b6e7553c FF |
953 | + i_fxdhdrp -> numberOfExternalReferences); |
954 | if (totsymcount == 0) | |
c3e964b9 FF |
955 | { |
956 | return (true); | |
957 | } | |
b6e7553c | 958 | |
c3e964b9 FF |
959 | if (bfd_seek (abfd, i_fxdhdrp -> publicsOffset, SEEK_SET) == -1) |
960 | { | |
961 | bfd_error = system_call_error; | |
962 | return (false); | |
963 | } | |
b6e7553c FF |
964 | |
965 | sym = ((nlm_symbol_type *) | |
966 | bfd_zalloc (abfd, totsymcount * sizeof (nlm_symbol_type))); | |
967 | nlm_set_symbols (abfd, sym); | |
c3e964b9 FF |
968 | |
969 | /* We use the bfd's symcount directly as the control count, so that early | |
970 | termination of the loop leaves the symcount correct for the symbols that | |
971 | were read. */ | |
972 | ||
cdbfad1c | 973 | set_public_section_func = nlm_set_public_section_func (abfd); |
b6e7553c | 974 | symcount = i_fxdhdrp -> numberOfPublics; |
c3e964b9 FF |
975 | while (abfd -> symcount < symcount) |
976 | { | |
977 | if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd) | |
978 | != sizeof (symlength)) | |
979 | { | |
980 | bfd_error = system_call_error; | |
981 | return (false); | |
982 | } | |
983 | sym -> symbol.the_bfd = abfd; | |
984 | sym -> symbol.name = bfd_alloc (abfd, symlength + 1); | |
985 | if (bfd_read ((PTR) sym -> symbol.name, symlength, 1, abfd) | |
986 | != symlength) | |
987 | { | |
988 | bfd_error = system_call_error; | |
989 | return (false); | |
990 | } | |
cdbfad1c ILT |
991 | /* Cast away const. */ |
992 | ((char *) (sym -> symbol.name))[symlength] = '\0'; | |
b6e7553c | 993 | if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) |
c3e964b9 FF |
994 | { |
995 | bfd_error = system_call_error; | |
996 | return (false); | |
997 | } | |
998 | sym -> symbol.flags = BSF_GLOBAL | BSF_EXPORT; | |
b6e7553c | 999 | sym -> symbol.value = get_word (abfd, temp); |
cdbfad1c | 1000 | if (set_public_section_func) |
c3e964b9 | 1001 | { |
cdbfad1c ILT |
1002 | /* Most backends can use the code below, but unfortunately |
1003 | some use a different scheme. */ | |
1004 | if ((*set_public_section_func) (abfd, sym) == false) | |
1005 | return false; | |
c3e964b9 FF |
1006 | } |
1007 | else | |
1008 | { | |
cdbfad1c ILT |
1009 | if (sym -> symbol.value & NLM_HIBIT) |
1010 | { | |
1011 | sym -> symbol.value &= ~NLM_HIBIT; | |
1012 | sym -> symbol.flags |= BSF_FUNCTION; | |
1013 | sym -> symbol.section = | |
1014 | bfd_get_section_by_name (abfd, NLM_CODE_NAME); | |
1015 | } | |
1016 | else | |
1017 | { | |
1018 | sym -> symbol.section = | |
1019 | bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); | |
1020 | } | |
c3e964b9 | 1021 | } |
b6e7553c | 1022 | sym -> rcnt = 0; |
c3e964b9 FF |
1023 | abfd -> symcount++; |
1024 | sym++; | |
1025 | } | |
1026 | ||
45a78ebb ILT |
1027 | /* Read the debugging records. */ |
1028 | ||
1029 | if (i_fxdhdrp -> numberOfDebugRecords > 0) | |
1030 | { | |
1031 | if (bfd_seek (abfd, i_fxdhdrp -> debugInfoOffset, SEEK_SET) == -1) | |
1032 | { | |
1033 | bfd_error = system_call_error; | |
1034 | return (false); | |
1035 | } | |
1036 | ||
1037 | symcount += i_fxdhdrp -> numberOfDebugRecords; | |
1038 | while (abfd -> symcount < symcount) | |
1039 | { | |
1040 | if ((bfd_read ((PTR) &symtype, sizeof (symtype), 1, abfd) | |
1041 | != sizeof (symtype)) | |
1042 | || bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp) | |
1043 | || (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd) | |
1044 | != sizeof (symlength))) | |
1045 | { | |
1046 | bfd_error = system_call_error; | |
1047 | return false; | |
1048 | } | |
1049 | sym -> symbol.the_bfd = abfd; | |
1050 | sym -> symbol.name = bfd_alloc (abfd, symlength + 1); | |
1051 | if (bfd_read ((PTR) sym -> symbol.name, symlength, 1, abfd) | |
1052 | != symlength) | |
1053 | { | |
1054 | bfd_error = system_call_error; | |
1055 | return (false); | |
1056 | } | |
cdbfad1c ILT |
1057 | /* Cast away const. */ |
1058 | ((char *) (sym -> symbol.name))[symlength] = '\0'; | |
45a78ebb ILT |
1059 | sym -> symbol.flags = BSF_LOCAL; |
1060 | sym -> symbol.value = get_word (abfd, temp); | |
1061 | if (symtype == 0) | |
1062 | { | |
1063 | sym -> symbol.section = | |
1064 | bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); | |
1065 | } | |
1066 | else if (symtype == 1) | |
1067 | { | |
1068 | sym -> symbol.flags |= BSF_FUNCTION; | |
1069 | sym -> symbol.section = | |
1070 | bfd_get_section_by_name (abfd, NLM_CODE_NAME); | |
1071 | } | |
1072 | else | |
1073 | { | |
1074 | sym -> symbol.section = &bfd_abs_section; | |
1075 | } | |
1076 | sym -> rcnt = 0; | |
1077 | abfd -> symcount++; | |
1078 | sym++; | |
1079 | } | |
1080 | } | |
1081 | ||
b6e7553c FF |
1082 | /* Read in the import records. We can only do this if we know how |
1083 | to read relocs for this target. */ | |
c3e964b9 | 1084 | |
cdbfad1c ILT |
1085 | read_import_func = nlm_read_import_func (abfd); |
1086 | if (read_import_func != NULL) | |
c3e964b9 | 1087 | { |
b6e7553c FF |
1088 | if (bfd_seek (abfd, i_fxdhdrp -> externalReferencesOffset, SEEK_SET) |
1089 | == -1) | |
c3e964b9 | 1090 | { |
b6e7553c FF |
1091 | bfd_error = system_call_error; |
1092 | return (false); | |
1093 | } | |
1094 | ||
1095 | symcount += i_fxdhdrp -> numberOfExternalReferences; | |
1096 | while (abfd -> symcount < symcount) | |
1097 | { | |
cdbfad1c ILT |
1098 | if ((*read_import_func) (abfd, sym) == false) |
1099 | return false; | |
c3e964b9 | 1100 | sym++; |
cdbfad1c | 1101 | abfd->symcount++; |
c3e964b9 | 1102 | } |
c3e964b9 FF |
1103 | } |
1104 | ||
1105 | return (true); | |
1106 | } | |
b6e7553c FF |
1107 | \f |
1108 | /* Get the relocs for an NLM file. There are two types of relocs. | |
1109 | Imports are relocs against symbols defined in other NLM files. We | |
1110 | treat these as relocs against global symbols. Relocation fixups | |
1111 | are internal relocs. | |
1112 | ||
1113 | The actual format used to store the relocs is machine specific. */ | |
1114 | ||
1115 | /* Read in the relocation fixup information. This is stored in | |
1116 | nlm_relocation_fixups, an array of arelent structures, and | |
1117 | nlm_relocation_fixup_secs, an array of section pointers. The | |
1118 | section pointers are needed because the relocs are not sorted by | |
1119 | section. */ | |
1120 | ||
1121 | static boolean | |
1122 | nlm_slurp_reloc_fixups (abfd) | |
1123 | bfd *abfd; | |
1124 | { | |
1125 | boolean (*read_func) PARAMS ((bfd *, nlm_symbol_type *, asection **, | |
1126 | arelent *)); | |
1127 | bfd_size_type count; | |
1128 | arelent *rels; | |
1129 | asection **secs; | |
1130 | ||
1131 | if (nlm_relocation_fixups (abfd) != NULL) | |
1132 | return true; | |
1133 | read_func = nlm_read_reloc_func (abfd); | |
1134 | if (read_func == NULL) | |
1135 | return true; | |
1136 | ||
1137 | if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset, | |
1138 | SEEK_SET) != 0) | |
1139 | { | |
1140 | bfd_error = system_call_error; | |
1141 | return false; | |
1142 | } | |
1143 | ||
1144 | count = nlm_fixed_header (abfd)->numberOfRelocationFixups; | |
1145 | rels = (arelent *) bfd_alloc (abfd, count * sizeof (arelent)); | |
1146 | secs = (asection **) bfd_alloc (abfd, count * sizeof (asection *)); | |
1147 | if (rels == NULL || secs == NULL) | |
1148 | { | |
1149 | bfd_error = no_memory; | |
1150 | return false; | |
1151 | } | |
1152 | nlm_relocation_fixups (abfd) = rels; | |
1153 | nlm_relocation_fixup_secs (abfd) = secs; | |
1154 | ||
1155 | /* We have to read piece by piece, because we don't know how large | |
1156 | the machine specific reloc information is. */ | |
1157 | while (count-- != 0) | |
1158 | { | |
1159 | if ((*read_func) (abfd, (nlm_symbol_type *) NULL, secs, rels) == false) | |
1160 | { | |
1161 | nlm_relocation_fixups (abfd) = NULL; | |
1162 | nlm_relocation_fixup_secs (abfd) = NULL; | |
1163 | return false; | |
1164 | } | |
1165 | ++secs; | |
1166 | ++rels; | |
1167 | } | |
1168 | ||
1169 | return true; | |
1170 | } | |
1171 | ||
1172 | /* Get the number of relocs. This really just returns an upper bound, | |
1173 | since it does not attempt to distinguish them based on the section. | |
1174 | That will be handled when they are actually read. */ | |
1175 | ||
1176 | unsigned int | |
1177 | nlm_get_reloc_upper_bound (abfd, sec) | |
1178 | bfd *abfd; | |
1179 | asection *sec; | |
1180 | { | |
1181 | nlm_symbol_type *syms; | |
1182 | bfd_size_type count; | |
1183 | unsigned int ret; | |
1184 | ||
1185 | /* If we don't know how to read relocs, just return 0. */ | |
1186 | if (nlm_read_reloc_func (abfd) == NULL) | |
1187 | return 0; | |
1188 | /* Make sure we have either the code or the data section. */ | |
1189 | if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0) | |
1190 | return 0; | |
1191 | ||
1192 | syms = nlm_get_symbols (abfd); | |
1193 | if (syms == NULL) | |
1194 | { | |
8b977377 | 1195 | if (nlm_slurp_symbol_table (abfd) == false) |
b6e7553c FF |
1196 | return 0; |
1197 | syms = nlm_get_symbols (abfd); | |
1198 | } | |
1199 | ||
1200 | ret = nlm_fixed_header (abfd)->numberOfRelocationFixups; | |
1201 | ||
1202 | count = bfd_get_symcount (abfd); | |
1203 | while (count-- != 0) | |
1204 | { | |
1205 | ret += syms->rcnt; | |
1206 | ++syms; | |
1207 | } | |
1208 | ||
1209 | return (ret + 1) * sizeof (arelent *); | |
1210 | } | |
1211 | ||
1212 | /* Get the relocs themselves. */ | |
1213 | ||
1214 | unsigned int | |
1215 | nlm_canonicalize_reloc (abfd, sec, relptr, symbols) | |
1216 | bfd *abfd; | |
1217 | asection *sec; | |
1218 | arelent **relptr; | |
1219 | asymbol **symbols; | |
1220 | { | |
1221 | arelent *rels; | |
1222 | asection **secs; | |
1223 | bfd_size_type count, i; | |
1224 | unsigned int ret; | |
1225 | ||
1226 | /* Get the relocation fixups. */ | |
1227 | rels = nlm_relocation_fixups (abfd); | |
1228 | if (rels == NULL) | |
1229 | { | |
8b977377 | 1230 | if (nlm_slurp_reloc_fixups (abfd) == false) |
b6e7553c FF |
1231 | return 0; |
1232 | rels = nlm_relocation_fixups (abfd); | |
1233 | if (rels == NULL) | |
1234 | return 0; | |
1235 | } | |
1236 | secs = nlm_relocation_fixup_secs (abfd); | |
1237 | ||
1238 | ret = 0; | |
1239 | count = nlm_fixed_header (abfd)->numberOfRelocationFixups; | |
1240 | for (i = 0; i < count; i++, rels++, secs++) | |
1241 | { | |
1242 | if (*secs == sec) | |
1243 | { | |
1244 | *relptr++ = rels; | |
1245 | ++ret; | |
1246 | } | |
1247 | } | |
1248 | ||
1249 | /* Get the import symbols. */ | |
1250 | count = bfd_get_symcount (abfd); | |
1251 | for (i = 0; i < count; i++, symbols++) | |
1252 | { | |
1253 | asymbol *sym; | |
1254 | ||
1255 | sym = *symbols; | |
1256 | if (bfd_asymbol_flavour (sym) == bfd_target_nlm_flavour) | |
1257 | { | |
1258 | nlm_symbol_type *nlm_sym; | |
1259 | bfd_size_type j; | |
1260 | ||
1261 | nlm_sym = (nlm_symbol_type *) sym; | |
1262 | for (j = 0; j < nlm_sym->rcnt; j++) | |
1263 | { | |
1264 | if (nlm_sym->relocs[j].section == sec) | |
1265 | { | |
1266 | *relptr = &nlm_sym->relocs[j].reloc; | |
1267 | (*relptr)->sym_ptr_ptr = symbols; | |
1268 | ++relptr; | |
1269 | ++ret; | |
1270 | } | |
1271 | } | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | *relptr = NULL; | |
1276 | ||
1277 | return ret; | |
1278 | } | |
1279 | \f | |
1280 | /* Compute the section file positions for an NLM file. All variable | |
1281 | length data in the file headers must be set before this function is | |
1282 | called. If the variable length data is changed later, the | |
1283 | resulting object file will be incorrect. Unfortunately, there is | |
1284 | no way to check this. | |
1285 | ||
1286 | This routine also sets the Size and Offset fields in the fixed | |
7389debf ILT |
1287 | header. |
1288 | ||
1289 | It also looks over the symbols and moves any common symbols into | |
1290 | the .bss section; NLM has no way to represent a common symbol. | |
1291 | This approach means that either the symbols must already have been | |
1292 | set at this point, or there must be no common symbols. We need to | |
1293 | move the symbols at this point so that mangle_relocs can see the | |
1294 | final values. */ | |
b6e7553c FF |
1295 | |
1296 | static boolean | |
1297 | nlm_compute_section_file_positions (abfd) | |
1298 | bfd *abfd; | |
1299 | { | |
1300 | file_ptr sofar; | |
1301 | asection *sec; | |
1302 | bfd_vma text, data, bss; | |
1303 | bfd_vma text_low, data_low; | |
1304 | int text_align, data_align, other_align; | |
1305 | file_ptr text_ptr, data_ptr, other_ptr; | |
45a78ebb | 1306 | asection *bss_sec; |
7389debf | 1307 | asymbol **sym_ptr_ptr; |
b6e7553c FF |
1308 | |
1309 | if (abfd->output_has_begun == true) | |
1310 | return true; | |
1311 | ||
45a78ebb ILT |
1312 | /* Make sure we have a section to hold uninitialized data. */ |
1313 | bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); | |
1314 | if (bss_sec == NULL) | |
1315 | { | |
1316 | if (! add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME, | |
1317 | (file_ptr) 0, (bfd_size_type) 0, | |
1318 | SEC_ALLOC)) | |
1319 | return false; | |
1320 | bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); | |
1321 | } | |
1322 | ||
b6e7553c FF |
1323 | abfd->output_has_begun = true; |
1324 | ||
1325 | /* The fixed header. */ | |
cdbfad1c | 1326 | sofar = nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd); |
b6e7553c FF |
1327 | |
1328 | /* The variable header. */ | |
1329 | sofar += (sizeof (nlm_variable_header (abfd)->descriptionLength) | |
1330 | + nlm_variable_header (abfd) -> descriptionLength + 1 | |
1331 | + NLM_TARGET_LONG_SIZE /* stackSize */ | |
1332 | + NLM_TARGET_LONG_SIZE /* reserved */ | |
1333 | + sizeof (nlm_variable_header (abfd) -> oldThreadName) | |
1334 | + sizeof (nlm_variable_header (abfd) -> screenNameLength) | |
1335 | + nlm_variable_header (abfd) -> screenNameLength + 1 | |
1336 | + sizeof (nlm_variable_header (abfd) -> threadNameLength) | |
1337 | + nlm_variable_header (abfd) -> threadNameLength + 1); | |
1338 | ||
1339 | /* The auxiliary headers. */ | |
1340 | if (find_nonzero ((PTR) nlm_version_header (abfd), | |
1341 | sizeof (Nlm_Internal_Version_Header))) | |
1342 | sofar += sizeof (Nlm_External_Version_Header); | |
1343 | if (find_nonzero ((PTR) nlm_extended_header (abfd), | |
1344 | sizeof (Nlm_Internal_Extended_Header))) | |
1345 | sofar += sizeof (Nlm_External_Extended_Header); | |
1346 | if (find_nonzero ((PTR) nlm_custom_header (abfd), | |
1347 | sizeof (Nlm_Internal_Custom_Header))) | |
1348 | sofar += sizeof (Nlm_External_Custom_Header); | |
1349 | if (find_nonzero ((PTR) nlm_copyright_header (abfd), | |
1350 | sizeof (Nlm_Internal_Copyright_Header))) | |
1351 | sofar += (sizeof (Nlm_External_Copyright_Header) | |
1352 | + nlm_copyright_header (abfd) -> copyrightMessageLength + 1); | |
1353 | ||
1354 | /* Compute the section file positions in two passes. First get the | |
1355 | sizes of the text and data sections, and then set the file | |
1356 | positions. This code aligns the sections in the file using the | |
1357 | same alignment restrictions that apply to the sections in memory; | |
1358 | this may not be necessary. */ | |
1359 | text = 0; | |
1360 | text_low = (bfd_vma) -1; | |
1361 | text_align = 0; | |
1362 | data = 0; | |
1363 | data_low = (bfd_vma) -1; | |
1364 | data_align = 0; | |
1365 | bss = 0; | |
1366 | other_align = 0; | |
1367 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1368 | { | |
1369 | flagword f; | |
1370 | ||
1371 | sec->_raw_size = BFD_ALIGN (sec->_raw_size, 1 << sec->alignment_power); | |
1372 | ||
1373 | f = bfd_get_section_flags (abfd, sec); | |
1374 | if (f & SEC_CODE) | |
1375 | { | |
1376 | text += sec->_raw_size; | |
1377 | if (bfd_get_section_vma (abfd, sec) < text_low) | |
1378 | text_low = bfd_get_section_vma (abfd, sec); | |
1379 | if (sec->alignment_power > text_align) | |
1380 | text_align = sec->alignment_power; | |
1381 | } | |
1382 | else if (f & SEC_DATA) | |
1383 | { | |
1384 | data += sec->_raw_size; | |
1385 | if (bfd_get_section_vma (abfd, sec) < data_low) | |
1386 | data_low = bfd_get_section_vma (abfd, sec); | |
1387 | if (sec->alignment_power > data_align) | |
1388 | data_align = sec->alignment_power; | |
1389 | } | |
1390 | else if (f & SEC_HAS_CONTENTS) | |
1391 | { | |
1392 | if (sec->alignment_power > other_align) | |
1393 | other_align = sec->alignment_power; | |
1394 | } | |
1395 | else if (f & SEC_ALLOC) | |
1396 | bss += sec->_raw_size; | |
1397 | } | |
1398 | ||
1399 | nlm_set_text_low (abfd, text_low); | |
1400 | nlm_set_data_low (abfd, data_low); | |
1401 | ||
1402 | text_ptr = BFD_ALIGN (sofar, 1 << text_align); | |
1403 | data_ptr = BFD_ALIGN (text_ptr + text, 1 << data_align); | |
1404 | other_ptr = BFD_ALIGN (data_ptr + data, 1 << other_align); | |
1405 | ||
1406 | /* Fill in some fields in the header for which we now have the | |
1407 | information. */ | |
1408 | nlm_fixed_header (abfd)->codeImageOffset = text_ptr; | |
1409 | nlm_fixed_header (abfd)->codeImageSize = text; | |
1410 | nlm_fixed_header (abfd)->dataImageOffset = data_ptr; | |
1411 | nlm_fixed_header (abfd)->dataImageSize = data; | |
1412 | nlm_fixed_header (abfd)->uninitializedDataSize = bss; | |
1413 | ||
1414 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1415 | { | |
1416 | flagword f; | |
1417 | ||
1418 | f = bfd_get_section_flags (abfd, sec); | |
1419 | ||
1420 | if (f & SEC_CODE) | |
1421 | { | |
1422 | sec->filepos = text_ptr; | |
1423 | text_ptr += sec->_raw_size; | |
1424 | } | |
1425 | else if (f & SEC_DATA) | |
1426 | { | |
1427 | sec->filepos = data_ptr; | |
1428 | data_ptr += sec->_raw_size; | |
1429 | } | |
1430 | else if (f & SEC_HAS_CONTENTS) | |
1431 | { | |
1432 | sec->filepos = other_ptr; | |
1433 | other_ptr += sec->_raw_size; | |
1434 | } | |
1435 | } | |
1436 | ||
1437 | nlm_fixed_header (abfd)->relocationFixupOffset = other_ptr; | |
1438 | ||
7389debf ILT |
1439 | /* Move all common symbols into the .bss section. */ |
1440 | ||
1441 | sym_ptr_ptr = bfd_get_outsymbols (abfd); | |
1442 | if (sym_ptr_ptr != NULL) | |
1443 | { | |
1444 | asymbol **sym_end; | |
7389debf ILT |
1445 | bfd_vma add; |
1446 | ||
7389debf ILT |
1447 | sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); |
1448 | add = 0; | |
1449 | for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) | |
1450 | { | |
1451 | asymbol *sym; | |
1452 | bfd_vma size; | |
1453 | ||
1454 | sym = *sym_ptr_ptr; | |
1455 | ||
1456 | if (! bfd_is_com_section (bfd_get_section (sym))) | |
1457 | continue; | |
1458 | ||
1459 | /* Put the common symbol in the .bss section, and increase | |
1460 | the size of the .bss section by the size of the common | |
1461 | symbol (which is the old value of the symbol). */ | |
1462 | sym->section = bss_sec; | |
1463 | size = sym->value; | |
1464 | sym->value = bss_sec->_raw_size + add; | |
1465 | add += size; | |
1466 | add = BFD_ALIGN (add, 1 << bss_sec->alignment_power); | |
1467 | } | |
1468 | nlm_fixed_header (abfd)->uninitializedDataSize += add; | |
1469 | bss_sec->_raw_size += add; | |
1470 | } | |
1471 | ||
b6e7553c FF |
1472 | return true; |
1473 | } | |
1474 | ||
1475 | /* Set the contents of a section. To do this we need to know where | |
1476 | the section is going to be located in the output file. That means | |
1477 | that the sizes of all the sections must be set, and all the | |
1478 | variable size header information must be known. */ | |
1479 | ||
1480 | boolean | |
1481 | nlm_set_section_contents (abfd, section, location, offset, count) | |
1482 | bfd *abfd; | |
1483 | asection *section; | |
1484 | PTR location; | |
1485 | file_ptr offset; | |
1486 | bfd_size_type count; | |
1487 | { | |
1488 | if (abfd->output_has_begun == false | |
1489 | && nlm_compute_section_file_positions (abfd) == false) | |
1490 | return false; | |
1491 | ||
1492 | if (count == 0) | |
1493 | return true; | |
1494 | ||
7389debf ILT |
1495 | /* i386 NetWare has a very restricted set of relocs. In order for |
1496 | objcopy to work, the NLM i386 backend needs a chance to rework | |
1497 | the section contents so that its set of relocs will work. If all | |
1498 | the relocs are already acceptable, this will not do anything. */ | |
1499 | if (section->reloc_count != 0) | |
1500 | { | |
45a78ebb ILT |
1501 | boolean (*mangle_relocs_func) PARAMS ((bfd *, asection *, PTR, |
1502 | bfd_vma, bfd_size_type)); | |
7389debf ILT |
1503 | |
1504 | mangle_relocs_func = nlm_mangle_relocs_func (abfd); | |
1505 | if (mangle_relocs_func != NULL) | |
1506 | { | |
1507 | if (! (*mangle_relocs_func) (abfd, section, location, | |
1508 | (bfd_vma) offset, count)) | |
1509 | return false; | |
1510 | } | |
1511 | } | |
1512 | ||
b6e7553c FF |
1513 | if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0 |
1514 | || bfd_write (location, 1, count, abfd) != count) | |
1515 | { | |
1516 | bfd_error = system_call_error; | |
1517 | return false; | |
1518 | } | |
1519 | ||
1520 | return true; | |
1521 | } | |
1522 | ||
1523 | /* We need to sort a list of relocs associated with sections when we | |
1524 | write out the external relocs. */ | |
1525 | ||
b6e7553c FF |
1526 | static int |
1527 | nlm_external_reloc_compare (p1, p2) | |
1528 | const void *p1; | |
1529 | const void *p2; | |
1530 | { | |
1531 | const struct reloc_and_sec *r1 = (const struct reloc_and_sec *) p1; | |
1532 | const struct reloc_and_sec *r2 = (const struct reloc_and_sec *) p2; | |
1533 | ||
1534 | return strcmp ((*r1->rel->sym_ptr_ptr)->name, | |
1535 | (*r2->rel->sym_ptr_ptr)->name); | |
1536 | } | |
1537 | ||
1538 | /* Write out an NLM file. We write out the information in this order: | |
1539 | fixed header | |
1540 | variable header | |
1541 | auxiliary headers | |
1542 | code sections | |
1543 | data sections | |
1544 | other sections (custom data, messages, help, shared NLM, RPC, | |
1545 | module dependencies) | |
1546 | relocation fixups | |
1547 | external references (imports) | |
1548 | public symbols (exports) | |
1549 | debugging records | |
1550 | This is similar to the order used by the NetWare tools; the | |
1551 | difference is that NetWare puts the sections other than code, data | |
1552 | and custom data at the end of the NLM. It is convenient for us to | |
1553 | know where the sections are going to be before worrying about the | |
1554 | size of the other information. | |
1555 | ||
1556 | By the time this function is called, all the section data should | |
1557 | have been output using set_section_contents. Note that custom | |
1558 | data, the message file, the help file, the shared NLM file, the RPC | |
1559 | data, and the module dependencies are all considered to be | |
1560 | sections; the caller is responsible for filling in the offset and | |
1561 | length fields in the NLM headers. The relocation fixups and | |
1562 | imports are both obtained from the list of relocs attached to each | |
1563 | section. The exports and debugging records are obtained from the | |
1564 | list of outsymbols. */ | |
1565 | ||
1566 | boolean | |
1567 | nlm_write_object_contents (abfd) | |
1568 | bfd *abfd; | |
1569 | { | |
b6e7553c | 1570 | asection *sec; |
cdbfad1c | 1571 | boolean (*write_import_func) PARAMS ((bfd *, asection *, arelent *)); |
b6e7553c FF |
1572 | bfd_size_type external_reloc_count, internal_reloc_count, i, c; |
1573 | struct reloc_and_sec *external_relocs; | |
1574 | asymbol **sym_ptr_ptr; | |
45a78ebb | 1575 | file_ptr last; |
cdbfad1c ILT |
1576 | boolean (*write_prefix_func) PARAMS ((bfd *)); |
1577 | unsigned char *fixed_header = alloca (nlm_fixed_header_size (abfd)); | |
b6e7553c FF |
1578 | |
1579 | if (abfd->output_has_begun == false | |
1580 | && nlm_compute_section_file_positions (abfd) == false) | |
1581 | return false; | |
1582 | ||
1583 | /* Write out the variable length headers. */ | |
cdbfad1c ILT |
1584 | if (bfd_seek (abfd, |
1585 | nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd), | |
1586 | SEEK_SET) != 0) | |
b6e7553c FF |
1587 | { |
1588 | bfd_error = system_call_error; | |
1589 | return false; | |
1590 | } | |
1591 | if (nlm_swap_variable_header_out (abfd) == false | |
1592 | || nlm_swap_auxiliary_headers_out (abfd) == false) | |
1593 | { | |
1594 | bfd_error = system_call_error; | |
1595 | return false; | |
1596 | } | |
1597 | ||
1598 | /* A weak check on whether the section file positions were | |
1599 | reasonable. */ | |
1600 | if (bfd_tell (abfd) > nlm_fixed_header (abfd)->codeImageOffset) | |
1601 | { | |
1602 | bfd_error = invalid_operation; | |
1603 | return false; | |
1604 | } | |
1605 | ||
1606 | /* Advance to the relocs. */ | |
1607 | if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset, | |
1608 | SEEK_SET) != 0) | |
1609 | { | |
1610 | bfd_error = system_call_error; | |
1611 | return false; | |
1612 | } | |
1613 | ||
1614 | /* The format of the relocation entries is dependent upon the | |
1615 | particular target. We use an external routine to write the reloc | |
1616 | out. */ | |
cdbfad1c | 1617 | write_import_func = nlm_write_import_func (abfd); |
b6e7553c FF |
1618 | |
1619 | /* Write out the internal relocation fixups. While we're looping | |
1620 | over the relocs, we also count the external relocs, which is | |
1621 | needed when they are written out below. */ | |
1622 | internal_reloc_count = 0; | |
1623 | external_reloc_count = 0; | |
1624 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1625 | { | |
1626 | arelent **rel_ptr_ptr, **rel_end; | |
1627 | ||
1628 | if (sec->reloc_count == 0) | |
1629 | continue; | |
1630 | ||
1631 | /* We can only represent relocs within a code or data | |
cdbfad1c | 1632 | section. We ignore them for a debugging section. */ |
b6e7553c | 1633 | if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0) |
cdbfad1c | 1634 | continue; |
b6e7553c | 1635 | |
cdbfad1c ILT |
1636 | /* We need to know how to write out imports */ |
1637 | if (write_import_func == NULL) | |
b6e7553c FF |
1638 | { |
1639 | bfd_error = invalid_operation; | |
1640 | return false; | |
1641 | } | |
1642 | ||
1643 | rel_ptr_ptr = sec->orelocation; | |
1644 | rel_end = rel_ptr_ptr + sec->reloc_count; | |
1645 | for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++) | |
1646 | { | |
1647 | arelent *rel; | |
1648 | asymbol *sym; | |
1649 | ||
1650 | rel = *rel_ptr_ptr; | |
1651 | sym = *rel->sym_ptr_ptr; | |
1652 | ||
7389debf | 1653 | if (bfd_get_section (sym) != &bfd_und_section) |
b6e7553c FF |
1654 | { |
1655 | ++internal_reloc_count; | |
cdbfad1c | 1656 | if ((*write_import_func) (abfd, sec, rel) == false) |
b6e7553c FF |
1657 | return false; |
1658 | } | |
1659 | else | |
1660 | ++external_reloc_count; | |
1661 | } | |
1662 | } | |
1663 | nlm_fixed_header (abfd)->numberOfRelocationFixups = internal_reloc_count; | |
1664 | ||
1665 | /* Write out the imports (relocs against external symbols). These | |
1666 | are output as a symbol name followed by all the relocs for that | |
1667 | symbol, so we must first gather together all the relocs against | |
1668 | external symbols and sort them. */ | |
1669 | external_relocs = | |
1670 | (struct reloc_and_sec *) bfd_alloc (abfd, | |
1671 | (external_reloc_count | |
1672 | * sizeof (struct reloc_and_sec))); | |
1673 | if (external_relocs == (struct reloc_and_sec *) NULL) | |
1674 | { | |
1675 | bfd_error = no_memory; | |
1676 | return false; | |
1677 | } | |
1678 | i = 0; | |
1679 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1680 | { | |
1681 | arelent **rel_ptr_ptr, **rel_end; | |
1682 | ||
1683 | if (sec->reloc_count == 0) | |
1684 | continue; | |
1685 | ||
1686 | rel_ptr_ptr = sec->orelocation; | |
1687 | rel_end = rel_ptr_ptr + sec->reloc_count; | |
1688 | for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++) | |
1689 | { | |
1690 | arelent *rel; | |
1691 | asymbol *sym; | |
1692 | ||
1693 | rel = *rel_ptr_ptr; | |
1694 | sym = *rel->sym_ptr_ptr; | |
1695 | ||
7389debf | 1696 | if (bfd_get_section (sym) != &bfd_und_section) |
b6e7553c FF |
1697 | continue; |
1698 | ||
1699 | external_relocs[i].rel = rel; | |
1700 | external_relocs[i].sec = sec; | |
1701 | ++i; | |
1702 | } | |
1703 | } | |
1704 | ||
1705 | BFD_ASSERT (i == external_reloc_count); | |
1706 | ||
1707 | /* Sort the external relocs by name. */ | |
1708 | qsort (external_relocs, external_reloc_count, | |
1709 | sizeof (struct reloc_and_sec), nlm_external_reloc_compare); | |
1710 | ||
1711 | /* Write out the external relocs. */ | |
1712 | nlm_fixed_header (abfd)->externalReferencesOffset = bfd_tell (abfd); | |
1713 | c = 0; | |
1714 | i = 0; | |
1715 | while (i < external_reloc_count) | |
1716 | { | |
1717 | arelent *rel; | |
1718 | asymbol *sym; | |
7389debf | 1719 | bfd_size_type j, cnt; |
b6e7553c FF |
1720 | |
1721 | ++c; | |
1722 | ||
1723 | rel = external_relocs[i].rel; | |
1724 | sym = *rel->sym_ptr_ptr; | |
1725 | ||
b6e7553c | 1726 | cnt = 0; |
7389debf ILT |
1727 | for (j = i; |
1728 | (j < external_reloc_count | |
1729 | && *external_relocs[j].rel->sym_ptr_ptr == sym); | |
1730 | j++) | |
b6e7553c FF |
1731 | ++cnt; |
1732 | ||
cdbfad1c ILT |
1733 | if ((*nlm_write_external_func (abfd)) (abfd, cnt, sym, |
1734 | &external_relocs[i]) | |
1735 | == false) | |
1736 | return false; | |
b6e7553c | 1737 | |
cdbfad1c | 1738 | i += cnt; |
b6e7553c | 1739 | } |
cdbfad1c | 1740 | |
b6e7553c FF |
1741 | nlm_fixed_header (abfd)->numberOfExternalReferences = c; |
1742 | ||
1743 | /* Write out the public symbols (exports). */ | |
1744 | sym_ptr_ptr = bfd_get_outsymbols (abfd); | |
1745 | if (sym_ptr_ptr != (asymbol **) NULL) | |
1746 | { | |
cdbfad1c | 1747 | bfd_vma (*get_public_offset_func) PARAMS ((bfd *, asymbol *)); |
b6e7553c FF |
1748 | asymbol **sym_end; |
1749 | ||
1750 | nlm_fixed_header (abfd)->publicsOffset = bfd_tell (abfd); | |
cdbfad1c | 1751 | get_public_offset_func = nlm_get_public_offset_func (abfd); |
b6e7553c FF |
1752 | c = 0; |
1753 | sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); | |
1754 | for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) | |
1755 | { | |
1756 | asymbol *sym; | |
1757 | bfd_byte len; | |
1758 | bfd_vma offset; | |
b6e7553c FF |
1759 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; |
1760 | ||
1761 | sym = *sym_ptr_ptr; | |
1762 | ||
7389debf ILT |
1763 | if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) == 0 |
1764 | || bfd_get_section (sym) == &bfd_und_section) | |
b6e7553c FF |
1765 | continue; |
1766 | ||
1767 | ++c; | |
c3e964b9 | 1768 | |
b6e7553c FF |
1769 | len = strlen (sym->name); |
1770 | if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) | |
1771 | != sizeof (bfd_byte)) | |
1772 | || bfd_write (sym->name, len, 1, abfd) != len) | |
1773 | { | |
1774 | bfd_error = system_call_error; | |
1775 | return false; | |
1776 | } | |
1777 | ||
cdbfad1c | 1778 | if (get_public_offset_func) |
b6e7553c | 1779 | { |
cdbfad1c ILT |
1780 | /* Most backends can use the code below, but |
1781 | unfortunately some use a different scheme. */ | |
1782 | offset = (*get_public_offset_func) (abfd, sym); | |
b6e7553c FF |
1783 | } |
1784 | else | |
1785 | { | |
cdbfad1c ILT |
1786 | offset = bfd_asymbol_value (sym); |
1787 | sec = sym->section; | |
1788 | if (sec->flags & SEC_CODE) | |
1789 | { | |
1790 | offset -= nlm_get_text_low (abfd); | |
1791 | offset |= NLM_HIBIT; | |
1792 | } | |
1793 | else if (sec->flags & (SEC_DATA | SEC_ALLOC)) | |
1794 | { | |
1795 | /* SEC_ALLOC is for the .bss section. */ | |
1796 | offset -= nlm_get_data_low (abfd); | |
1797 | } | |
1798 | else | |
1799 | { | |
1800 | /* We can't handle an exported symbol that is not in | |
1801 | the code or data segment. */ | |
1802 | bfd_error = invalid_operation; | |
1803 | return false; | |
1804 | } | |
b6e7553c FF |
1805 | } |
1806 | ||
1807 | put_word (abfd, offset, temp); | |
1808 | if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
1809 | { | |
1810 | bfd_error = system_call_error; | |
1811 | return false; | |
1812 | } | |
1813 | } | |
1814 | nlm_fixed_header (abfd)->numberOfPublics = c; | |
1815 | ||
45a78ebb ILT |
1816 | /* Write out the debugging records. The NLM conversion program |
1817 | wants to be able to inhibit this, so as a special hack if | |
1818 | debugInfoOffset is set to -1 we don't write any debugging | |
1819 | information. This can not be handled by fiddling with the | |
1820 | symbol table, because exported symbols appear in both the | |
1821 | exported symbol list and the debugging information. */ | |
1822 | if (nlm_fixed_header (abfd)->debugInfoOffset == (file_ptr) -1) | |
b6e7553c | 1823 | { |
45a78ebb ILT |
1824 | nlm_fixed_header (abfd)->debugInfoOffset = 0; |
1825 | nlm_fixed_header (abfd)->numberOfDebugRecords = 0; | |
1826 | } | |
1827 | else | |
1828 | { | |
1829 | nlm_fixed_header (abfd)->debugInfoOffset = bfd_tell (abfd); | |
1830 | c = 0; | |
1831 | sym_ptr_ptr = bfd_get_outsymbols (abfd); | |
1832 | sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); | |
1833 | for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) | |
b6e7553c | 1834 | { |
45a78ebb ILT |
1835 | asymbol *sym; |
1836 | bfd_byte type, len; | |
1837 | bfd_vma offset; | |
1838 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; | |
1839 | ||
1840 | sym = *sym_ptr_ptr; | |
1841 | ||
1842 | /* The NLM notion of a debugging symbol is actually what | |
1843 | BFD calls a local or global symbol. What BFD calls a | |
1844 | debugging symbol NLM does not understand at all. */ | |
1845 | if ((sym->flags & (BSF_LOCAL | BSF_GLOBAL | BSF_EXPORT)) == 0 | |
1846 | || (sym->flags & BSF_DEBUGGING) != 0 | |
1847 | || bfd_get_section (sym) == &bfd_und_section) | |
1848 | continue; | |
1849 | ||
1850 | ++c; | |
1851 | ||
cdbfad1c | 1852 | offset = sym->value; |
45a78ebb ILT |
1853 | sec = sym->section; |
1854 | if (sec->flags & SEC_CODE) | |
cdbfad1c ILT |
1855 | type = 1; |
1856 | else if (sec->flags & SEC_DATA) | |
1857 | type = 0; | |
1858 | else if (sec->flags & SEC_ALLOC) | |
45a78ebb | 1859 | { |
45a78ebb | 1860 | type = 0; |
cdbfad1c | 1861 | offset += nlm_fixed_header (abfd)->dataImageSize; |
45a78ebb ILT |
1862 | } |
1863 | else | |
1864 | type = 2; | |
b6e7553c | 1865 | |
45a78ebb ILT |
1866 | /* The type is 0 for data, 1 for code, 2 for absolute. */ |
1867 | if (bfd_write (&type, sizeof (bfd_byte), 1, abfd) | |
1868 | != sizeof (bfd_byte)) | |
1869 | { | |
1870 | bfd_error = system_call_error; | |
1871 | return false; | |
1872 | } | |
b6e7553c | 1873 | |
45a78ebb ILT |
1874 | put_word (abfd, offset, temp); |
1875 | if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
1876 | { | |
1877 | bfd_error = system_call_error; | |
1878 | return false; | |
1879 | } | |
b6e7553c | 1880 | |
45a78ebb ILT |
1881 | len = strlen (sym->name); |
1882 | if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) | |
1883 | != sizeof (bfd_byte)) | |
1884 | || bfd_write (sym->name, len, 1, abfd) != len) | |
b6e7553c | 1885 | { |
45a78ebb ILT |
1886 | bfd_error = system_call_error; |
1887 | return false; | |
b6e7553c | 1888 | } |
45a78ebb ILT |
1889 | } |
1890 | nlm_fixed_header (abfd)->numberOfDebugRecords = c; | |
1891 | } | |
b6e7553c FF |
1892 | } |
1893 | ||
45a78ebb ILT |
1894 | /* NLMLINK fills in offset values even if there is no data, so we do |
1895 | the same. */ | |
1896 | last = bfd_tell (abfd); | |
1897 | if (nlm_fixed_header (abfd)->codeImageOffset == 0) | |
1898 | nlm_fixed_header (abfd)->codeImageOffset = last; | |
1899 | if (nlm_fixed_header (abfd)->dataImageOffset == 0) | |
1900 | nlm_fixed_header (abfd)->dataImageOffset = last; | |
1901 | if (nlm_fixed_header (abfd)->customDataOffset == 0) | |
1902 | nlm_fixed_header (abfd)->customDataOffset = last; | |
1903 | if (nlm_fixed_header (abfd)->moduleDependencyOffset == 0) | |
1904 | nlm_fixed_header (abfd)->moduleDependencyOffset = last; | |
1905 | if (nlm_fixed_header (abfd)->relocationFixupOffset == 0) | |
1906 | nlm_fixed_header (abfd)->relocationFixupOffset = last; | |
1907 | if (nlm_fixed_header (abfd)->externalReferencesOffset == 0) | |
1908 | nlm_fixed_header (abfd)->externalReferencesOffset = last; | |
1909 | if (nlm_fixed_header (abfd)->publicsOffset == 0) | |
1910 | nlm_fixed_header (abfd)->publicsOffset = last; | |
1911 | if (nlm_fixed_header (abfd)->debugInfoOffset == 0) | |
1912 | nlm_fixed_header (abfd)->debugInfoOffset = last; | |
1913 | ||
b6e7553c FF |
1914 | /* At this point everything has been written out except the fixed |
1915 | header. */ | |
cdbfad1c | 1916 | memcpy (nlm_fixed_header (abfd)->signature, nlm_signature (abfd), |
b6e7553c FF |
1917 | NLM_SIGNATURE_SIZE); |
1918 | nlm_fixed_header (abfd)->version = NLM_HEADER_VERSION; | |
1919 | nlm_fixed_header (abfd)->codeStartOffset = | |
45a78ebb ILT |
1920 | (bfd_get_start_address (abfd) |
1921 | - nlm_get_text_low (abfd)); | |
b6e7553c FF |
1922 | |
1923 | /* We have no convenient way for the caller to pass in the exit | |
1924 | procedure or the check unload procedure, so the caller must set | |
1925 | the values in the header to the values of the symbols. */ | |
45a78ebb | 1926 | nlm_fixed_header (abfd)->exitProcedureOffset -= nlm_get_text_low (abfd); |
b6e7553c FF |
1927 | if (nlm_fixed_header (abfd)->checkUnloadProcedureOffset != 0) |
1928 | nlm_fixed_header (abfd)->checkUnloadProcedureOffset -= | |
1929 | nlm_get_text_low (abfd); | |
1930 | ||
cdbfad1c ILT |
1931 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) |
1932 | return false; | |
1933 | ||
1934 | write_prefix_func = nlm_write_prefix_func (abfd); | |
1935 | if (write_prefix_func) | |
1936 | { | |
1937 | if ((*write_prefix_func) (abfd) == false) | |
1938 | return false; | |
1939 | } | |
1940 | ||
1941 | BFD_ASSERT (bfd_tell (abfd) == nlm_optional_prefix_size (abfd)); | |
1942 | ||
1943 | nlm_swap_fixed_header_out (abfd, nlm_fixed_header (abfd), fixed_header); | |
1944 | if (bfd_write (fixed_header, nlm_fixed_header_size (abfd), 1, abfd) | |
1945 | != nlm_fixed_header_size (abfd)) | |
b6e7553c FF |
1946 | { |
1947 | bfd_error = system_call_error; | |
1948 | return false; | |
1949 | } | |
1950 | ||
1951 | return true; | |
1952 | } |