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) | |
6c534df0 ILT |
41 | #define Nlm_External_Cygnus_Section_Header \ |
42 | NlmNAME(External_Cygnus_Section_Header) | |
b6e7553c FF |
43 | |
44 | #define nlm_symbol_type nlmNAME(symbol_type) | |
45 | #define nlm_get_symtab_upper_bound nlmNAME(get_symtab_upper_bound) | |
46 | #define nlm_get_symtab nlmNAME(get_symtab) | |
47 | #define nlm_make_empty_symbol nlmNAME(make_empty_symbol) | |
48 | #define nlm_print_symbol nlmNAME(print_symbol) | |
49 | #define nlm_get_symbol_info nlmNAME(get_symbol_info) | |
50 | #define nlm_get_reloc_upper_bound nlmNAME(get_reloc_upper_bound) | |
51 | #define nlm_canonicalize_reloc nlmNAME(canonicalize_reloc) | |
52 | #define nlm_object_p nlmNAME(object_p) | |
53 | #define nlm_set_section_contents nlmNAME(set_section_contents) | |
54 | #define nlm_write_object_contents nlmNAME(write_object_contents) | |
c3e964b9 | 55 | |
cdbfad1c ILT |
56 | #define nlm_swap_fixed_header_in(abfd,src,dst) \ |
57 | (nlm_swap_fixed_header_in_func(abfd))(abfd,src,dst) | |
58 | #define nlm_swap_fixed_header_out(abfd,src,dst) \ | |
59 | (nlm_swap_fixed_header_out_func(abfd))(abfd,src,dst) | |
60 | ||
c3e964b9 FF |
61 | /* Forward declarations of static functions */ |
62 | ||
63 | static boolean add_bfd_section | |
64 | PARAMS ((bfd *, char *, file_ptr, bfd_size_type, flagword)); | |
b6e7553c FF |
65 | static boolean nlm_swap_variable_header_in |
66 | PARAMS ((bfd *)); | |
67 | static boolean nlm_swap_variable_header_out | |
68 | PARAMS ((bfd *)); | |
69 | static boolean find_nonzero | |
70 | PARAMS ((PTR, size_t)); | |
71 | static boolean nlm_swap_auxiliary_headers_in | |
72 | PARAMS ((bfd *)); | |
73 | static boolean nlm_swap_auxiliary_headers_out | |
74 | PARAMS ((bfd *)); | |
75 | static boolean nlm_slurp_symbol_table | |
76 | PARAMS ((bfd *)); | |
77 | static boolean nlm_slurp_reloc_fixups | |
78 | PARAMS ((bfd *)); | |
79 | static boolean nlm_compute_section_file_positions | |
80 | PARAMS ((bfd *)); | |
81 | static int nlm_external_reloc_compare | |
82 | PARAMS ((const void *, const void *)); | |
c3e964b9 FF |
83 | |
84 | /* Should perhaps use put_offset, put_word, etc. For now, the two versions | |
85 | can be handled by explicitly specifying 32 bits or "the long type". */ | |
86 | #if ARCH_SIZE == 64 | |
87 | #define put_word bfd_h_put_64 | |
88 | #define get_word bfd_h_get_64 | |
89 | #endif | |
90 | #if ARCH_SIZE == 32 | |
91 | #define put_word bfd_h_put_32 | |
92 | #define get_word bfd_h_get_32 | |
93 | #endif | |
94 | ||
95 | bfd_target * | |
326e32d7 ILT |
96 | nlm_object_p (abfd) |
97 | bfd *abfd; | |
c3e964b9 | 98 | { |
cdbfad1c ILT |
99 | struct nlm_obj_tdata *preserved_tdata = nlm_tdata (abfd); |
100 | boolean (*backend_object_p) PARAMS ((bfd *)); | |
80425e6c | 101 | PTR x_fxdhdr = NULL; |
cdbfad1c | 102 | Nlm_Internal_Fixed_Header *i_fxdhdrp; |
6c534df0 | 103 | struct nlm_obj_tdata *new_tdata = NULL; |
cdbfad1c | 104 | const char *signature; |
b6e7553c | 105 | enum bfd_architecture arch; |
c3e964b9 | 106 | |
cdbfad1c ILT |
107 | /* Some NLM formats have a prefix before the standard NLM fixed |
108 | header. */ | |
109 | backend_object_p = nlm_backend_object_p_func (abfd); | |
110 | if (backend_object_p) | |
111 | { | |
326e32d7 | 112 | if (!(*backend_object_p) (abfd)) |
cdbfad1c ILT |
113 | goto got_wrong_format_error; |
114 | } | |
115 | ||
c3e964b9 FF |
116 | /* Read in the fixed length portion of the NLM header in external format. */ |
117 | ||
80425e6c JK |
118 | x_fxdhdr = (PTR) malloc (nlm_fixed_header_size (abfd)); |
119 | if (x_fxdhdr == NULL) | |
120 | { | |
121 | bfd_set_error (bfd_error_no_memory); | |
122 | goto got_no_match; | |
123 | } | |
cdbfad1c ILT |
124 | |
125 | if (bfd_read ((PTR) x_fxdhdr, nlm_fixed_header_size (abfd), 1, abfd) != | |
126 | nlm_fixed_header_size (abfd)) | |
4002f18a ILT |
127 | { |
128 | if (bfd_get_error () != bfd_error_system_call) | |
129 | goto got_wrong_format_error; | |
130 | else | |
131 | goto got_no_match; | |
132 | } | |
c3e964b9 | 133 | |
cdbfad1c ILT |
134 | /* Allocate an instance of the nlm_obj_tdata structure and hook it up to |
135 | the tdata pointer in the bfd. */ | |
c3e964b9 | 136 | |
6c534df0 ILT |
137 | new_tdata = ((struct nlm_obj_tdata *) |
138 | bfd_zalloc (abfd, sizeof (struct nlm_obj_tdata))); | |
139 | if (new_tdata == NULL) | |
c3e964b9 | 140 | { |
80425e6c | 141 | bfd_set_error (bfd_error_no_memory); |
cdbfad1c | 142 | goto got_no_match; |
c3e964b9 FF |
143 | } |
144 | ||
6c534df0 ILT |
145 | nlm_tdata (abfd) = new_tdata; |
146 | ||
cdbfad1c ILT |
147 | i_fxdhdrp = nlm_fixed_header (abfd); |
148 | nlm_swap_fixed_header_in (abfd, x_fxdhdr, i_fxdhdrp); | |
6c534df0 ILT |
149 | free (x_fxdhdr); |
150 | x_fxdhdr = NULL; | |
cdbfad1c ILT |
151 | |
152 | /* Check to see if we have an NLM file for this backend by matching | |
153 | the NLM signature. */ | |
154 | ||
155 | signature = nlm_signature (abfd); | |
156 | if (signature != NULL | |
157 | && *signature != '\0' | |
158 | && strncmp ((char *) i_fxdhdrp->signature, signature, | |
159 | NLM_SIGNATURE_SIZE) != 0) | |
160 | goto got_wrong_format_error; | |
161 | ||
c3e964b9 FF |
162 | /* There's no supported way to discover the endianess of an NLM, so test for |
163 | a sane version number after doing byte swapping appropriate for this | |
164 | XVEC. (Hack alert!) */ | |
165 | ||
cdbfad1c ILT |
166 | if (i_fxdhdrp->version > 0xFFFF) |
167 | goto got_wrong_format_error; | |
c3e964b9 FF |
168 | |
169 | /* There's no supported way to check for 32 bit versus 64 bit addresses, | |
170 | so ignore this distinction for now. (FIXME) */ | |
171 | ||
6c534df0 ILT |
172 | /* Swap in the rest of the required header. */ |
173 | if (!nlm_swap_variable_header_in (abfd)) | |
174 | { | |
175 | if (bfd_get_error () != bfd_error_system_call) | |
176 | goto got_wrong_format_error; | |
177 | else | |
178 | goto got_no_match; | |
179 | } | |
c3e964b9 | 180 | |
6c534df0 ILT |
181 | /* Add the sections supplied by all NLM's, and then read in the |
182 | auxiliary headers. Reading the auxiliary headers may create | |
183 | additional sections described in the cygnus_sections header. | |
184 | From this point on we assume that we have an NLM, and do not | |
185 | treat errors as indicating the wrong format. */ | |
186 | ||
187 | if (!add_bfd_section (abfd, NLM_CODE_NAME, | |
188 | i_fxdhdrp->codeImageOffset, | |
189 | i_fxdhdrp->codeImageSize, | |
190 | (SEC_CODE | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
191 | | SEC_RELOC)) | |
c3e964b9 | 192 | || !add_bfd_section (abfd, NLM_INITIALIZED_DATA_NAME, |
326e32d7 ILT |
193 | i_fxdhdrp->dataImageOffset, |
194 | i_fxdhdrp->dataImageSize, | |
6c534df0 ILT |
195 | (SEC_DATA | SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
196 | | SEC_RELOC)) | |
c3e964b9 FF |
197 | || !add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME, |
198 | (file_ptr) 0, | |
326e32d7 | 199 | i_fxdhdrp->uninitializedDataSize, |
b6e7553c | 200 | SEC_ALLOC)) |
6c534df0 ILT |
201 | goto got_no_match; |
202 | ||
203 | if (!nlm_swap_auxiliary_headers_in (abfd)) | |
204 | goto got_no_match; | |
c3e964b9 | 205 | |
b6e7553c FF |
206 | if (nlm_fixed_header (abfd)->numberOfRelocationFixups != 0 |
207 | || nlm_fixed_header (abfd)->numberOfExternalReferences != 0) | |
208 | abfd->flags |= HAS_RELOC; | |
209 | if (nlm_fixed_header (abfd)->numberOfPublics != 0 | |
45a78ebb ILT |
210 | || nlm_fixed_header (abfd)->numberOfDebugRecords != 0 |
211 | || nlm_fixed_header (abfd)->numberOfExternalReferences != 0) | |
b6e7553c FF |
212 | abfd->flags |= HAS_SYMS; |
213 | ||
214 | arch = nlm_architecture (abfd); | |
215 | if (arch != bfd_arch_unknown) | |
216 | bfd_default_set_arch_mach (abfd, arch, (unsigned long) 0); | |
217 | ||
326e32d7 | 218 | return (abfd->xvec); |
cdbfad1c | 219 | |
326e32d7 | 220 | got_wrong_format_error: |
80425e6c | 221 | bfd_set_error (bfd_error_wrong_format); |
326e32d7 | 222 | got_no_match: |
cdbfad1c | 223 | nlm_tdata (abfd) = preserved_tdata; |
6c534df0 ILT |
224 | if (new_tdata != NULL) |
225 | bfd_release (abfd, new_tdata); | |
80425e6c JK |
226 | if (x_fxdhdr != NULL) |
227 | free (x_fxdhdr); | |
cdbfad1c | 228 | return (NULL); |
c3e964b9 FF |
229 | } |
230 | ||
231 | /* Add a section to the bfd. */ | |
232 | ||
233 | static boolean | |
326e32d7 ILT |
234 | add_bfd_section (abfd, name, offset, size, flags) |
235 | bfd *abfd; | |
236 | char *name; | |
237 | file_ptr offset; | |
238 | bfd_size_type size; | |
239 | flagword flags; | |
c3e964b9 FF |
240 | { |
241 | asection *newsect; | |
242 | ||
243 | newsect = bfd_make_section (abfd, name); | |
244 | if (newsect == NULL) | |
245 | { | |
246 | return (false); | |
247 | } | |
326e32d7 ILT |
248 | newsect->vma = 0; /* NLM's are relocatable. */ |
249 | newsect->_raw_size = size; | |
250 | newsect->filepos = offset; | |
251 | newsect->flags = flags; | |
252 | newsect->alignment_power = bfd_log2 (0); /* FIXME */ | |
c3e964b9 FF |
253 | return (true); |
254 | } | |
255 | ||
c3e964b9 FF |
256 | /* Read and swap in the variable length header. All the fields must |
257 | exist in the NLM, and must exist in the order they are read here. */ | |
258 | ||
259 | static boolean | |
326e32d7 ILT |
260 | nlm_swap_variable_header_in (abfd) |
261 | bfd *abfd; | |
c3e964b9 | 262 | { |
326e32d7 | 263 | unsigned char temp[NLM_TARGET_LONG_SIZE]; |
c3e964b9 FF |
264 | |
265 | /* Read the description length and text members. */ | |
266 | ||
326e32d7 ILT |
267 | if (bfd_read ((PTR) & nlm_variable_header (abfd)->descriptionLength, |
268 | sizeof (nlm_variable_header (abfd)->descriptionLength), | |
c3e964b9 | 269 | 1, abfd) != |
326e32d7 | 270 | sizeof (nlm_variable_header (abfd)->descriptionLength)) |
4002f18a | 271 | return (false); |
326e32d7 ILT |
272 | if (bfd_read ((PTR) nlm_variable_header (abfd)->descriptionText, |
273 | nlm_variable_header (abfd)->descriptionLength + 1, | |
c3e964b9 | 274 | 1, abfd) != |
326e32d7 | 275 | nlm_variable_header (abfd)->descriptionLength + 1) |
4002f18a | 276 | return (false); |
c3e964b9 FF |
277 | |
278 | /* Read and convert the stackSize field. */ | |
279 | ||
f03b1f0d | 280 | if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) |
4002f18a | 281 | return (false); |
326e32d7 | 282 | nlm_variable_header (abfd)->stackSize = get_word (abfd, (bfd_byte *) temp); |
c3e964b9 FF |
283 | |
284 | /* Read and convert the reserved field. */ | |
285 | ||
f03b1f0d | 286 | if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) |
4002f18a | 287 | return (false); |
326e32d7 | 288 | nlm_variable_header (abfd)->reserved = get_word (abfd, (bfd_byte *) temp); |
c3e964b9 FF |
289 | |
290 | /* Read the oldThreadName field. This field is a fixed length string. */ | |
291 | ||
326e32d7 ILT |
292 | if (bfd_read ((PTR) nlm_variable_header (abfd)->oldThreadName, |
293 | sizeof (nlm_variable_header (abfd)->oldThreadName), | |
c3e964b9 | 294 | 1, abfd) != |
326e32d7 | 295 | sizeof (nlm_variable_header (abfd)->oldThreadName)) |
4002f18a | 296 | return (false); |
c3e964b9 FF |
297 | |
298 | /* Read the screen name length and text members. */ | |
299 | ||
326e32d7 ILT |
300 | if (bfd_read ((PTR) & nlm_variable_header (abfd)->screenNameLength, |
301 | sizeof (nlm_variable_header (abfd)->screenNameLength), | |
c3e964b9 | 302 | 1, abfd) != |
326e32d7 | 303 | sizeof (nlm_variable_header (abfd)->screenNameLength)) |
4002f18a | 304 | return (false); |
326e32d7 ILT |
305 | if (bfd_read ((PTR) nlm_variable_header (abfd)->screenName, |
306 | nlm_variable_header (abfd)->screenNameLength + 1, | |
c3e964b9 | 307 | 1, abfd) != |
326e32d7 | 308 | nlm_variable_header (abfd)->screenNameLength + 1) |
4002f18a | 309 | return (false); |
c3e964b9 FF |
310 | |
311 | /* Read the thread name length and text members. */ | |
312 | ||
326e32d7 ILT |
313 | if (bfd_read ((PTR) & nlm_variable_header (abfd)->threadNameLength, |
314 | sizeof (nlm_variable_header (abfd)->threadNameLength), | |
c3e964b9 | 315 | 1, abfd) != |
326e32d7 | 316 | sizeof (nlm_variable_header (abfd)->threadNameLength)) |
4002f18a | 317 | return (false); |
326e32d7 ILT |
318 | if (bfd_read ((PTR) nlm_variable_header (abfd)->threadName, |
319 | nlm_variable_header (abfd)->threadNameLength + 1, | |
c3e964b9 | 320 | 1, abfd) != |
326e32d7 | 321 | nlm_variable_header (abfd)->threadNameLength + 1) |
4002f18a | 322 | return (false); |
c3e964b9 FF |
323 | return (true); |
324 | } | |
325 | ||
b6e7553c FF |
326 | /* Swap and write out the variable length header. All the fields must |
327 | exist in the NLM, and must exist in this order. */ | |
328 | ||
329 | static boolean | |
326e32d7 ILT |
330 | nlm_swap_variable_header_out (abfd) |
331 | bfd *abfd; | |
b6e7553c | 332 | { |
326e32d7 | 333 | unsigned char temp[NLM_TARGET_LONG_SIZE]; |
b6e7553c FF |
334 | |
335 | /* Write the description length and text members. */ | |
336 | ||
326e32d7 ILT |
337 | if (bfd_write ((PTR) & nlm_variable_header (abfd)->descriptionLength, |
338 | sizeof (nlm_variable_header (abfd)->descriptionLength), | |
b6e7553c | 339 | 1, abfd) != |
326e32d7 | 340 | sizeof (nlm_variable_header (abfd)->descriptionLength)) |
4002f18a | 341 | return (false); |
326e32d7 ILT |
342 | if (bfd_write ((PTR) nlm_variable_header (abfd)->descriptionText, |
343 | nlm_variable_header (abfd)->descriptionLength + 1, | |
b6e7553c | 344 | 1, abfd) != |
326e32d7 | 345 | nlm_variable_header (abfd)->descriptionLength + 1) |
4002f18a | 346 | return (false); |
b6e7553c FF |
347 | |
348 | /* Convert and write the stackSize field. */ | |
349 | ||
326e32d7 | 350 | put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->stackSize, |
b6e7553c FF |
351 | (bfd_byte *) temp); |
352 | if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
4002f18a | 353 | return (false); |
b6e7553c FF |
354 | |
355 | /* Convert and write the reserved field. */ | |
356 | ||
326e32d7 | 357 | put_word (abfd, (bfd_vma) nlm_variable_header (abfd)->reserved, |
b6e7553c FF |
358 | (bfd_byte *) temp); |
359 | if (bfd_write ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
4002f18a | 360 | return (false); |
b6e7553c FF |
361 | |
362 | /* Write the oldThreadName field. This field is a fixed length string. */ | |
363 | ||
326e32d7 ILT |
364 | if (bfd_write ((PTR) nlm_variable_header (abfd)->oldThreadName, |
365 | sizeof (nlm_variable_header (abfd)->oldThreadName), | |
b6e7553c | 366 | 1, abfd) != |
326e32d7 | 367 | sizeof (nlm_variable_header (abfd)->oldThreadName)) |
4002f18a | 368 | return (false); |
b6e7553c FF |
369 | |
370 | /* Write the screen name length and text members. */ | |
371 | ||
326e32d7 ILT |
372 | if (bfd_write ((PTR) & nlm_variable_header (abfd)->screenNameLength, |
373 | sizeof (nlm_variable_header (abfd)->screenNameLength), | |
b6e7553c | 374 | 1, abfd) != |
326e32d7 | 375 | sizeof (nlm_variable_header (abfd)->screenNameLength)) |
4002f18a | 376 | return (false); |
326e32d7 ILT |
377 | if (bfd_write ((PTR) nlm_variable_header (abfd)->screenName, |
378 | nlm_variable_header (abfd)->screenNameLength + 1, | |
b6e7553c | 379 | 1, abfd) != |
326e32d7 | 380 | nlm_variable_header (abfd)->screenNameLength + 1) |
4002f18a | 381 | return (false); |
b6e7553c FF |
382 | |
383 | /* Write the thread name length and text members. */ | |
384 | ||
326e32d7 ILT |
385 | if (bfd_write ((PTR) & nlm_variable_header (abfd)->threadNameLength, |
386 | sizeof (nlm_variable_header (abfd)->threadNameLength), | |
b6e7553c | 387 | 1, abfd) != |
326e32d7 | 388 | sizeof (nlm_variable_header (abfd)->threadNameLength)) |
4002f18a | 389 | return (false); |
326e32d7 ILT |
390 | if (bfd_write ((PTR) nlm_variable_header (abfd)->threadName, |
391 | nlm_variable_header (abfd)->threadNameLength + 1, | |
b6e7553c | 392 | 1, abfd) != |
326e32d7 | 393 | nlm_variable_header (abfd)->threadNameLength + 1) |
4002f18a | 394 | return (false); |
b6e7553c FF |
395 | return (true); |
396 | } | |
397 | ||
c3e964b9 FF |
398 | /* Read and swap in the contents of all the auxiliary headers. Because of |
399 | the braindead design, we have to do strcmps on strings of indeterminate | |
400 | length to figure out what each auxiliary header is. Even worse, we have | |
401 | no way of knowing how many auxiliary headers there are or where the end | |
402 | of the auxiliary headers are, except by finding something that doesn't | |
403 | look like a known auxiliary header. This means that the first new type | |
404 | of auxiliary header added will break all existing tools that don't | |
405 | recognize it. */ | |
406 | ||
407 | static boolean | |
326e32d7 ILT |
408 | nlm_swap_auxiliary_headers_in (abfd) |
409 | bfd *abfd; | |
c3e964b9 | 410 | { |
326e32d7 | 411 | char tempstr[16]; |
c3e964b9 FF |
412 | long position; |
413 | ||
414 | for (;;) | |
415 | { | |
416 | position = bfd_tell (abfd); | |
417 | if (bfd_read ((PTR) tempstr, sizeof (tempstr), 1, abfd) != | |
418 | sizeof (tempstr)) | |
4002f18a | 419 | return (false); |
c3e964b9 | 420 | if (bfd_seek (abfd, position, SEEK_SET) == -1) |
4002f18a | 421 | return (false); |
c3e964b9 FF |
422 | if (strncmp (tempstr, "VeRsIoN#", 8) == 0) |
423 | { | |
424 | Nlm_External_Version_Header thdr; | |
326e32d7 | 425 | if (bfd_read ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) |
4002f18a | 426 | return (false); |
326e32d7 | 427 | memcpy (nlm_version_header (abfd)->stamp, thdr.stamp, |
c3e964b9 | 428 | sizeof (thdr.stamp)); |
326e32d7 | 429 | nlm_version_header (abfd)->majorVersion = |
c3e964b9 | 430 | get_word (abfd, (bfd_byte *) thdr.majorVersion); |
326e32d7 | 431 | nlm_version_header (abfd)->minorVersion = |
c3e964b9 | 432 | get_word (abfd, (bfd_byte *) thdr.minorVersion); |
326e32d7 | 433 | nlm_version_header (abfd)->revision = |
c3e964b9 | 434 | get_word (abfd, (bfd_byte *) thdr.revision); |
326e32d7 | 435 | nlm_version_header (abfd)->year = |
c3e964b9 | 436 | get_word (abfd, (bfd_byte *) thdr.year); |
326e32d7 | 437 | nlm_version_header (abfd)->month = |
c3e964b9 | 438 | get_word (abfd, (bfd_byte *) thdr.month); |
326e32d7 | 439 | nlm_version_header (abfd)->day = |
c3e964b9 FF |
440 | get_word (abfd, (bfd_byte *) thdr.day); |
441 | } | |
442 | else if (strncmp (tempstr, "MeSsAgEs", 8) == 0) | |
443 | { | |
444 | Nlm_External_Extended_Header thdr; | |
326e32d7 | 445 | if (bfd_read ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) |
4002f18a | 446 | return (false); |
326e32d7 | 447 | memcpy (nlm_extended_header (abfd)->stamp, thdr.stamp, |
c3e964b9 | 448 | sizeof (thdr.stamp)); |
326e32d7 | 449 | nlm_extended_header (abfd)->languageID = |
c3e964b9 | 450 | get_word (abfd, (bfd_byte *) thdr.languageID); |
326e32d7 | 451 | nlm_extended_header (abfd)->messageFileOffset = |
c3e964b9 | 452 | get_word (abfd, (bfd_byte *) thdr.messageFileOffset); |
326e32d7 | 453 | nlm_extended_header (abfd)->messageFileLength = |
c3e964b9 | 454 | get_word (abfd, (bfd_byte *) thdr.messageFileLength); |
326e32d7 | 455 | nlm_extended_header (abfd)->messageCount = |
c3e964b9 | 456 | get_word (abfd, (bfd_byte *) thdr.messageCount); |
326e32d7 | 457 | nlm_extended_header (abfd)->helpFileOffset = |
c3e964b9 | 458 | get_word (abfd, (bfd_byte *) thdr.helpFileOffset); |
326e32d7 | 459 | nlm_extended_header (abfd)->helpFileLength = |
c3e964b9 | 460 | get_word (abfd, (bfd_byte *) thdr.helpFileLength); |
326e32d7 | 461 | nlm_extended_header (abfd)->RPCDataOffset = |
c3e964b9 | 462 | get_word (abfd, (bfd_byte *) thdr.RPCDataOffset); |
326e32d7 | 463 | nlm_extended_header (abfd)->RPCDataLength = |
c3e964b9 | 464 | get_word (abfd, (bfd_byte *) thdr.RPCDataLength); |
326e32d7 | 465 | nlm_extended_header (abfd)->sharedCodeOffset = |
c3e964b9 | 466 | get_word (abfd, (bfd_byte *) thdr.sharedCodeOffset); |
326e32d7 | 467 | nlm_extended_header (abfd)->sharedCodeLength = |
c3e964b9 | 468 | get_word (abfd, (bfd_byte *) thdr.sharedCodeLength); |
326e32d7 | 469 | nlm_extended_header (abfd)->sharedDataOffset = |
c3e964b9 | 470 | get_word (abfd, (bfd_byte *) thdr.sharedDataOffset); |
326e32d7 | 471 | nlm_extended_header (abfd)->sharedDataLength = |
c3e964b9 | 472 | get_word (abfd, (bfd_byte *) thdr.sharedDataLength); |
326e32d7 | 473 | nlm_extended_header (abfd)->sharedRelocationFixupOffset = |
c3e964b9 | 474 | get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupOffset); |
326e32d7 | 475 | nlm_extended_header (abfd)->sharedRelocationFixupCount = |
c3e964b9 | 476 | get_word (abfd, (bfd_byte *) thdr.sharedRelocationFixupCount); |
326e32d7 | 477 | nlm_extended_header (abfd)->sharedExternalReferenceOffset = |
c3e964b9 | 478 | get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceOffset); |
326e32d7 | 479 | nlm_extended_header (abfd)->sharedExternalReferenceCount = |
c3e964b9 | 480 | get_word (abfd, (bfd_byte *) thdr.sharedExternalReferenceCount); |
326e32d7 | 481 | nlm_extended_header (abfd)->sharedPublicsOffset = |
c3e964b9 | 482 | get_word (abfd, (bfd_byte *) thdr.sharedPublicsOffset); |
326e32d7 | 483 | nlm_extended_header (abfd)->sharedPublicsCount = |
c3e964b9 | 484 | get_word (abfd, (bfd_byte *) thdr.sharedPublicsCount); |
326e32d7 | 485 | nlm_extended_header (abfd)->sharedDebugRecordOffset = |
cdbfad1c | 486 | get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordOffset); |
326e32d7 | 487 | nlm_extended_header (abfd)->sharedDebugRecordCount = |
cdbfad1c | 488 | get_word (abfd, (bfd_byte *) thdr.sharedDebugRecordCount); |
326e32d7 | 489 | nlm_extended_header (abfd)->SharedInitializationOffset = |
c3e964b9 | 490 | get_word (abfd, (bfd_byte *) thdr.sharedInitializationOffset); |
326e32d7 | 491 | nlm_extended_header (abfd)->SharedExitProcedureOffset = |
c3e964b9 | 492 | get_word (abfd, (bfd_byte *) thdr.SharedExitProcedureOffset); |
326e32d7 | 493 | nlm_extended_header (abfd)->productID = |
c3e964b9 | 494 | get_word (abfd, (bfd_byte *) thdr.productID); |
326e32d7 | 495 | nlm_extended_header (abfd)->reserved0 = |
c3e964b9 | 496 | get_word (abfd, (bfd_byte *) thdr.reserved0); |
326e32d7 | 497 | nlm_extended_header (abfd)->reserved1 = |
c3e964b9 | 498 | get_word (abfd, (bfd_byte *) thdr.reserved1); |
326e32d7 | 499 | nlm_extended_header (abfd)->reserved2 = |
c3e964b9 | 500 | get_word (abfd, (bfd_byte *) thdr.reserved2); |
326e32d7 | 501 | nlm_extended_header (abfd)->reserved3 = |
c3e964b9 | 502 | get_word (abfd, (bfd_byte *) thdr.reserved3); |
326e32d7 | 503 | nlm_extended_header (abfd)->reserved4 = |
c3e964b9 | 504 | get_word (abfd, (bfd_byte *) thdr.reserved4); |
326e32d7 | 505 | nlm_extended_header (abfd)->reserved5 = |
c3e964b9 FF |
506 | get_word (abfd, (bfd_byte *) thdr.reserved5); |
507 | } | |
508 | else if (strncmp (tempstr, "CuStHeAd", 8) == 0) | |
509 | { | |
510 | Nlm_External_Custom_Header thdr; | |
476d01f0 ILT |
511 | if (bfd_read ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) |
512 | return false; | |
326e32d7 | 513 | memcpy (nlm_custom_header (abfd)->stamp, thdr.stamp, |
c3e964b9 | 514 | sizeof (thdr.stamp)); |
326e32d7 | 515 | nlm_custom_header (abfd)->dataLength = |
c3e964b9 | 516 | get_word (abfd, (bfd_byte *) thdr.dataLength); |
476d01f0 ILT |
517 | nlm_custom_header (abfd)->data = |
518 | bfd_alloc (abfd, nlm_custom_header (abfd)->dataLength); | |
519 | if (nlm_custom_header (abfd)->data == NULL) | |
520 | return false; | |
521 | if (bfd_read (nlm_custom_header (abfd)->data, 1, | |
522 | nlm_custom_header (abfd)->dataLength, abfd) | |
523 | != nlm_custom_header (abfd)->dataLength) | |
524 | return false; | |
c3e964b9 FF |
525 | } |
526 | else if (strncmp (tempstr, "CoPyRiGhT=", 10) == 0) | |
527 | { | |
9783e04a | 528 | if (bfd_read ((PTR) nlm_copyright_header (abfd)->stamp, |
45a78ebb ILT |
529 | sizeof (nlm_copyright_header (abfd)->stamp), |
530 | 1, abfd) | |
531 | != sizeof (nlm_copyright_header (abfd)->stamp)) | |
4002f18a | 532 | return (false); |
326e32d7 ILT |
533 | if (bfd_read ((PTR) & (nlm_copyright_header (abfd) |
534 | ->copyrightMessageLength), | |
45a78ebb | 535 | 1, 1, abfd) != 1) |
4002f18a | 536 | return (false); |
c3e964b9 | 537 | /* The copyright message is a variable length string. */ |
326e32d7 ILT |
538 | if (bfd_read ((PTR) nlm_copyright_header (abfd)->copyrightMessage, |
539 | nlm_copyright_header (abfd)->copyrightMessageLength + 1, | |
c3e964b9 | 540 | 1, abfd) != |
326e32d7 | 541 | nlm_copyright_header (abfd)->copyrightMessageLength + 1) |
4002f18a | 542 | return (false); |
c3e964b9 | 543 | } |
6c534df0 ILT |
544 | else if (strncmp (tempstr, "CyGnUsSeCs", 10) == 0) |
545 | { | |
546 | Nlm_External_Cygnus_Section_Header thdr; | |
547 | bfd_size_type len; | |
548 | file_ptr pos; | |
549 | bfd_byte *contents; | |
550 | bfd_byte *p, *pend; | |
551 | ||
552 | if (bfd_read ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
553 | return false; | |
554 | memcpy (nlm_cygnus_section_header (abfd)->stamp, thdr.stamp, | |
555 | sizeof (thdr.stamp)); | |
556 | nlm_cygnus_section_header (abfd)->offset = | |
557 | get_word (abfd, (bfd_byte *) thdr.offset); | |
558 | len = get_word (abfd, (bfd_byte *) thdr.length); | |
559 | nlm_cygnus_section_header (abfd)->length = len; | |
560 | ||
561 | /* This data this header points to provides a list of the | |
562 | sections which were in the original object file which was | |
563 | converted to become an NLM. We locate those sections and | |
564 | add them to the BFD. Note that this is likely to create | |
565 | a second .text, .data and .bss section; retrieving the | |
566 | sections by name will get the actual NLM sections, which | |
567 | is what we want to happen. The sections from the | |
568 | original file, which may be subsets of the NLM section, | |
569 | can only be found using bfd_map_over_sections. */ | |
7f772644 SG |
570 | |
571 | contents = (bfd_byte *) bfd_alloc (abfd, len); | |
6c534df0 ILT |
572 | if (contents == (bfd_byte *) NULL) |
573 | { | |
574 | bfd_set_error (bfd_error_no_memory); | |
575 | return false; | |
576 | } | |
577 | pos = bfd_tell (abfd); | |
578 | if (bfd_seek (abfd, nlm_cygnus_section_header (abfd)->offset, | |
579 | SEEK_SET) != 0 | |
580 | || bfd_read (contents, len, 1, abfd) != len) | |
7f772644 | 581 | return false; |
6c534df0 ILT |
582 | p = contents; |
583 | pend = p + len; | |
584 | while (p < pend) | |
585 | { | |
586 | char *name; | |
587 | size_t l; | |
588 | file_ptr filepos; | |
589 | bfd_size_type size; | |
590 | asection *newsec; | |
591 | ||
592 | /* The format of this information is | |
593 | null terminated section name | |
594 | zeroes to adjust to 4 byte boundary | |
595 | 4 byte section data file pointer | |
596 | 4 byte section size | |
597 | */ | |
598 | ||
599 | name = p; | |
600 | l = strlen (name) + 1; | |
601 | l = (l + 3) &~ 3; | |
602 | p += l; | |
603 | filepos = bfd_h_get_32 (abfd, p); | |
604 | p += 4; | |
605 | size = bfd_h_get_32 (abfd, p); | |
606 | p += 4; | |
607 | ||
608 | newsec = bfd_make_section_anyway (abfd, name); | |
609 | if (newsec == (asection *) NULL) | |
7f772644 | 610 | return false; |
6c534df0 ILT |
611 | newsec->_raw_size = size; |
612 | if (filepos != 0) | |
613 | { | |
614 | newsec->filepos = filepos; | |
615 | newsec->flags |= SEC_HAS_CONTENTS; | |
616 | } | |
617 | } | |
618 | ||
6c534df0 ILT |
619 | if (bfd_seek (abfd, pos, SEEK_SET) != 0) |
620 | return false; | |
621 | } | |
c3e964b9 FF |
622 | else |
623 | { | |
624 | break; | |
625 | } | |
626 | } | |
b6e7553c FF |
627 | return (true); |
628 | } | |
629 | ||
630 | /* Return whether there is a non-zero byte in a memory block. */ | |
631 | ||
632 | static boolean | |
633 | find_nonzero (buf, size) | |
634 | PTR buf; | |
635 | size_t size; | |
636 | { | |
637 | char *p = (char *) buf; | |
638 | ||
639 | while (size-- != 0) | |
640 | if (*p++ != 0) | |
641 | return true; | |
642 | return false; | |
643 | } | |
644 | ||
645 | /* Swap out the contents of the auxiliary headers. We create those | |
646 | auxiliary headers which have been set non-zero. We do not require | |
647 | the caller to set up the stamp fields. */ | |
648 | ||
649 | static boolean | |
650 | nlm_swap_auxiliary_headers_out (abfd) | |
651 | bfd *abfd; | |
652 | { | |
653 | /* Write out the version header if there is one. */ | |
654 | if (find_nonzero ((PTR) nlm_version_header (abfd), | |
655 | sizeof (Nlm_Internal_Version_Header))) | |
656 | { | |
657 | Nlm_External_Version_Header thdr; | |
658 | ||
659 | memcpy (thdr.stamp, "VeRsIoN#", 8); | |
326e32d7 | 660 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->majorVersion, |
b6e7553c | 661 | (bfd_byte *) thdr.majorVersion); |
326e32d7 | 662 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->minorVersion, |
b6e7553c | 663 | (bfd_byte *) thdr.minorVersion); |
326e32d7 | 664 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->revision, |
b6e7553c | 665 | (bfd_byte *) thdr.revision); |
326e32d7 | 666 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->year, |
b6e7553c | 667 | (bfd_byte *) thdr.year); |
326e32d7 | 668 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->month, |
b6e7553c | 669 | (bfd_byte *) thdr.month); |
326e32d7 | 670 | put_word (abfd, (bfd_vma) nlm_version_header (abfd)->day, |
b6e7553c | 671 | (bfd_byte *) thdr.day); |
326e32d7 | 672 | if (bfd_write ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) |
4002f18a | 673 | return false; |
b6e7553c FF |
674 | } |
675 | ||
676 | /* Write out the extended header if there is one. */ | |
677 | if (find_nonzero ((PTR) nlm_extended_header (abfd), | |
678 | sizeof (Nlm_Internal_Extended_Header))) | |
679 | { | |
680 | Nlm_External_Extended_Header thdr; | |
681 | ||
682 | memcpy (thdr.stamp, "MeSsAgEs", 8); | |
683 | put_word (abfd, | |
326e32d7 | 684 | (bfd_vma) nlm_extended_header (abfd)->languageID, |
b6e7553c FF |
685 | (bfd_byte *) thdr.languageID); |
686 | put_word (abfd, | |
326e32d7 | 687 | (bfd_vma) nlm_extended_header (abfd)->messageFileOffset, |
b6e7553c FF |
688 | (bfd_byte *) thdr.messageFileOffset); |
689 | put_word (abfd, | |
326e32d7 | 690 | (bfd_vma) nlm_extended_header (abfd)->messageFileLength, |
b6e7553c FF |
691 | (bfd_byte *) thdr.messageFileLength); |
692 | put_word (abfd, | |
326e32d7 | 693 | (bfd_vma) nlm_extended_header (abfd)->messageCount, |
b6e7553c FF |
694 | (bfd_byte *) thdr.messageCount); |
695 | put_word (abfd, | |
326e32d7 | 696 | (bfd_vma) nlm_extended_header (abfd)->helpFileOffset, |
b6e7553c FF |
697 | (bfd_byte *) thdr.helpFileOffset); |
698 | put_word (abfd, | |
326e32d7 | 699 | (bfd_vma) nlm_extended_header (abfd)->helpFileLength, |
b6e7553c FF |
700 | (bfd_byte *) thdr.helpFileLength); |
701 | put_word (abfd, | |
326e32d7 | 702 | (bfd_vma) nlm_extended_header (abfd)->RPCDataOffset, |
b6e7553c FF |
703 | (bfd_byte *) thdr.RPCDataOffset); |
704 | put_word (abfd, | |
326e32d7 | 705 | (bfd_vma) nlm_extended_header (abfd)->RPCDataLength, |
b6e7553c FF |
706 | (bfd_byte *) thdr.RPCDataLength); |
707 | put_word (abfd, | |
326e32d7 | 708 | (bfd_vma) nlm_extended_header (abfd)->sharedCodeOffset, |
b6e7553c FF |
709 | (bfd_byte *) thdr.sharedCodeOffset); |
710 | put_word (abfd, | |
326e32d7 | 711 | (bfd_vma) nlm_extended_header (abfd)->sharedCodeLength, |
b6e7553c FF |
712 | (bfd_byte *) thdr.sharedCodeLength); |
713 | put_word (abfd, | |
326e32d7 | 714 | (bfd_vma) nlm_extended_header (abfd)->sharedDataOffset, |
b6e7553c FF |
715 | (bfd_byte *) thdr.sharedDataOffset); |
716 | put_word (abfd, | |
326e32d7 | 717 | (bfd_vma) nlm_extended_header (abfd)->sharedDataLength, |
b6e7553c FF |
718 | (bfd_byte *) thdr.sharedDataLength); |
719 | put_word (abfd, | |
326e32d7 | 720 | (bfd_vma) nlm_extended_header (abfd)->sharedRelocationFixupOffset, |
b6e7553c FF |
721 | (bfd_byte *) thdr.sharedRelocationFixupOffset); |
722 | put_word (abfd, | |
326e32d7 | 723 | (bfd_vma) nlm_extended_header (abfd)->sharedRelocationFixupCount, |
b6e7553c FF |
724 | (bfd_byte *) thdr.sharedRelocationFixupCount); |
725 | put_word (abfd, | |
326e32d7 | 726 | (bfd_vma) nlm_extended_header (abfd)->sharedExternalReferenceOffset, |
b6e7553c FF |
727 | (bfd_byte *) thdr.sharedExternalReferenceOffset); |
728 | put_word (abfd, | |
326e32d7 | 729 | (bfd_vma) nlm_extended_header (abfd)->sharedExternalReferenceCount, |
b6e7553c FF |
730 | (bfd_byte *) thdr.sharedExternalReferenceCount); |
731 | put_word (abfd, | |
326e32d7 | 732 | (bfd_vma) nlm_extended_header (abfd)->sharedPublicsOffset, |
b6e7553c FF |
733 | (bfd_byte *) thdr.sharedPublicsOffset); |
734 | put_word (abfd, | |
326e32d7 | 735 | (bfd_vma) nlm_extended_header (abfd)->sharedPublicsCount, |
b6e7553c | 736 | (bfd_byte *) thdr.sharedPublicsCount); |
cdbfad1c | 737 | put_word (abfd, |
326e32d7 | 738 | (bfd_vma) nlm_extended_header (abfd)->sharedDebugRecordOffset, |
cdbfad1c ILT |
739 | (bfd_byte *) thdr.sharedDebugRecordOffset); |
740 | put_word (abfd, | |
326e32d7 | 741 | (bfd_vma) nlm_extended_header (abfd)->sharedDebugRecordCount, |
cdbfad1c | 742 | (bfd_byte *) thdr.sharedDebugRecordCount); |
b6e7553c | 743 | put_word (abfd, |
326e32d7 | 744 | (bfd_vma) nlm_extended_header (abfd)->SharedInitializationOffset, |
b6e7553c FF |
745 | (bfd_byte *) thdr.sharedInitializationOffset); |
746 | put_word (abfd, | |
326e32d7 | 747 | (bfd_vma) nlm_extended_header (abfd)->SharedExitProcedureOffset, |
b6e7553c FF |
748 | (bfd_byte *) thdr.SharedExitProcedureOffset); |
749 | put_word (abfd, | |
326e32d7 | 750 | (bfd_vma) nlm_extended_header (abfd)->productID, |
b6e7553c FF |
751 | (bfd_byte *) thdr.productID); |
752 | put_word (abfd, | |
326e32d7 | 753 | (bfd_vma) nlm_extended_header (abfd)->reserved0, |
b6e7553c FF |
754 | (bfd_byte *) thdr.reserved0); |
755 | put_word (abfd, | |
326e32d7 | 756 | (bfd_vma) nlm_extended_header (abfd)->reserved1, |
b6e7553c FF |
757 | (bfd_byte *) thdr.reserved1); |
758 | put_word (abfd, | |
326e32d7 | 759 | (bfd_vma) nlm_extended_header (abfd)->reserved2, |
b6e7553c FF |
760 | (bfd_byte *) thdr.reserved2); |
761 | put_word (abfd, | |
326e32d7 | 762 | (bfd_vma) nlm_extended_header (abfd)->reserved3, |
b6e7553c FF |
763 | (bfd_byte *) thdr.reserved3); |
764 | put_word (abfd, | |
326e32d7 | 765 | (bfd_vma) nlm_extended_header (abfd)->reserved4, |
b6e7553c FF |
766 | (bfd_byte *) thdr.reserved4); |
767 | put_word (abfd, | |
326e32d7 | 768 | (bfd_vma) nlm_extended_header (abfd)->reserved5, |
b6e7553c | 769 | (bfd_byte *) thdr.reserved5); |
326e32d7 | 770 | if (bfd_write ((PTR) & thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) |
4002f18a | 771 | return false; |
b6e7553c FF |
772 | } |
773 | ||
774 | /* Write out the custom header if there is one. */ | |
775 | if (find_nonzero ((PTR) nlm_custom_header (abfd), | |
776 | sizeof (Nlm_Internal_Custom_Header))) | |
777 | { | |
778 | Nlm_External_Custom_Header thdr; | |
779 | ||
780 | /* Right now we assume the custom header is always the suggested | |
781 | format for alternate debugging records. */ | |
326e32d7 | 782 | BFD_ASSERT (nlm_custom_header (abfd)->dataLength == 8); |
b6e7553c FF |
783 | |
784 | memcpy (thdr.stamp, "CuStHeAd", 8); | |
326e32d7 | 785 | put_word (abfd, (bfd_vma) nlm_custom_header (abfd)->dataLength, |
b6e7553c | 786 | (bfd_byte *) thdr.dataLength); |
476d01f0 ILT |
787 | if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) |
788 | return false; | |
789 | if (bfd_write (nlm_custom_header (abfd)->data, 1, | |
790 | nlm_custom_header (abfd)->dataLength, abfd) | |
791 | != nlm_custom_header (abfd)->dataLength) | |
4002f18a | 792 | return false; |
b6e7553c FF |
793 | } |
794 | ||
795 | /* Write out the copyright header if there is one. */ | |
796 | if (find_nonzero ((PTR) nlm_copyright_header (abfd), | |
797 | sizeof (Nlm_Internal_Copyright_Header))) | |
798 | { | |
799 | Nlm_External_Copyright_Header thdr; | |
800 | ||
801 | memcpy (thdr.stamp, "CoPyRiGhT=", 10); | |
45a78ebb ILT |
802 | if (bfd_write ((PTR) thdr.stamp, sizeof (thdr.stamp), 1, abfd) |
803 | != sizeof (thdr.stamp)) | |
4002f18a | 804 | return false; |
45a78ebb ILT |
805 | thdr.copyrightMessageLength[0] = |
806 | nlm_copyright_header (abfd)->copyrightMessageLength; | |
807 | if (bfd_write ((PTR) thdr.copyrightMessageLength, 1, 1, abfd) != 1) | |
4002f18a | 808 | return false; |
b6e7553c | 809 | /* The copyright message is a variable length string. */ |
326e32d7 ILT |
810 | if (bfd_write ((PTR) nlm_copyright_header (abfd)->copyrightMessage, |
811 | nlm_copyright_header (abfd)->copyrightMessageLength + 1, | |
b6e7553c | 812 | 1, abfd) != |
326e32d7 | 813 | nlm_copyright_header (abfd)->copyrightMessageLength + 1) |
4002f18a | 814 | return false; |
b6e7553c FF |
815 | } |
816 | ||
6c534df0 ILT |
817 | /* Write out the Cygnus debugging header if there is one. */ |
818 | if (find_nonzero ((PTR) nlm_cygnus_section_header (abfd), | |
819 | sizeof (Nlm_Internal_Cygnus_Section_Header))) | |
820 | { | |
821 | Nlm_External_Cygnus_Section_Header thdr; | |
822 | ||
823 | memcpy (thdr.stamp, "CyGnUsSeCs", 10); | |
824 | put_word (abfd, (bfd_vma) nlm_cygnus_section_header (abfd)->offset, | |
825 | (bfd_byte *) thdr.offset); | |
826 | put_word (abfd, (bfd_vma) nlm_cygnus_section_header (abfd)->length, | |
827 | (bfd_byte *) thdr.length); | |
828 | if (bfd_write ((PTR) &thdr, sizeof (thdr), 1, abfd) != sizeof (thdr)) | |
829 | return false; | |
830 | } | |
831 | ||
b6e7553c | 832 | return true; |
c3e964b9 FF |
833 | } |
834 | ||
835 | /* We read the NLM's public symbols and use it to generate a bfd symbol | |
836 | table (hey, it's better than nothing) on a one-for-one basis. Thus | |
837 | use the number of public symbols as the number of bfd symbols we will | |
838 | have once we actually get around to reading them in. | |
839 | ||
840 | Return the number of bytes required to hold the symtab vector, based on | |
841 | the count plus 1, since we will NULL terminate the vector allocated based | |
842 | on this size. */ | |
843 | ||
326e32d7 ILT |
844 | long |
845 | nlm_get_symtab_upper_bound (abfd) | |
846 | bfd *abfd; | |
c3e964b9 FF |
847 | { |
848 | Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */ | |
326e32d7 ILT |
849 | long symcount; |
850 | long symtab_size = 0; | |
c3e964b9 FF |
851 | |
852 | i_fxdhdrp = nlm_fixed_header (abfd); | |
326e32d7 ILT |
853 | symcount = (i_fxdhdrp->numberOfPublics |
854 | + i_fxdhdrp->numberOfDebugRecords | |
855 | + i_fxdhdrp->numberOfExternalReferences); | |
c3e964b9 FF |
856 | symtab_size = (symcount + 1) * (sizeof (asymbol)); |
857 | return (symtab_size); | |
858 | } | |
859 | ||
860 | /* Note that bfd_get_symcount is guaranteed to be zero if slurping the | |
861 | symbol table fails. */ | |
862 | ||
326e32d7 | 863 | long |
b6e7553c FF |
864 | nlm_get_symtab (abfd, alocation) |
865 | bfd *abfd; | |
866 | asymbol **alocation; | |
c3e964b9 | 867 | { |
b6e7553c FF |
868 | nlm_symbol_type *symbase; |
869 | bfd_size_type counter = 0; | |
870 | ||
871 | if (nlm_slurp_symbol_table (abfd) == false) | |
326e32d7 | 872 | return -1; |
b6e7553c FF |
873 | symbase = nlm_get_symbols (abfd); |
874 | while (counter < bfd_get_symcount (abfd)) | |
875 | { | |
876 | *alocation++ = &symbase->symbol; | |
877 | symbase++; | |
878 | counter++; | |
879 | } | |
880 | *alocation = (asymbol *) NULL; | |
881 | return bfd_get_symcount (abfd); | |
c3e964b9 FF |
882 | } |
883 | ||
b6e7553c FF |
884 | /* Make an NLM symbol. There is nothing special to do here. */ |
885 | ||
c3e964b9 | 886 | asymbol * |
b6e7553c | 887 | nlm_make_empty_symbol (abfd) |
326e32d7 | 888 | bfd *abfd; |
c3e964b9 | 889 | { |
b6e7553c FF |
890 | nlm_symbol_type *new; |
891 | ||
892 | new = (nlm_symbol_type *) bfd_zalloc (abfd, sizeof (nlm_symbol_type)); | |
9783e04a DM |
893 | if (new) |
894 | new->symbol.the_bfd = abfd; | |
b6e7553c | 895 | return &new->symbol; |
c3e964b9 FF |
896 | } |
897 | ||
b6e7553c FF |
898 | /* Get symbol information. */ |
899 | ||
c3e964b9 | 900 | void |
b6e7553c | 901 | nlm_get_symbol_info (ignore_abfd, symbol, ret) |
326e32d7 ILT |
902 | bfd *ignore_abfd; |
903 | asymbol *symbol; | |
904 | symbol_info *ret; | |
c3e964b9 FF |
905 | { |
906 | bfd_symbol_info (symbol, ret); | |
907 | } | |
908 | ||
b6e7553c FF |
909 | /* Print symbol information. */ |
910 | ||
911 | void | |
912 | nlm_print_symbol (abfd, afile, symbol, how) | |
913 | bfd *abfd; | |
914 | PTR afile; | |
915 | asymbol *symbol; | |
916 | bfd_print_symbol_type how; | |
c3e964b9 | 917 | { |
b6e7553c FF |
918 | FILE *file = (FILE *) afile; |
919 | ||
920 | switch (how) | |
921 | { | |
922 | case bfd_print_symbol_name: | |
923 | case bfd_print_symbol_more: | |
924 | if (symbol->name) | |
326e32d7 | 925 | fprintf (file, "%s", symbol->name); |
b6e7553c FF |
926 | break; |
927 | case bfd_print_symbol_all: | |
928 | bfd_print_symbol_vandf ((PTR) file, symbol); | |
929 | fprintf (file, " %-5s", symbol->section->name); | |
930 | if (symbol->name) | |
326e32d7 | 931 | fprintf (file, " %s", symbol->name); |
b6e7553c FF |
932 | break; |
933 | } | |
c3e964b9 FF |
934 | } |
935 | ||
936 | /* Slurp in nlm symbol table. | |
937 | ||
938 | In the external (in-file) form, NLM export records are variable length, | |
939 | with the following form: | |
940 | ||
941 | 1 byte length of the symbol name (N) | |
942 | N bytes the symbol name | |
943 | 4 bytes the symbol offset from start of it's section | |
944 | ||
45a78ebb ILT |
945 | We also read in the debugging symbols and import records. Import |
946 | records are treated as undefined symbols. As we read the import | |
947 | records we also read in the associated reloc information, which is | |
948 | attached to the symbol. | |
b6e7553c FF |
949 | |
950 | The bfd symbols are copied to SYMPTRS. | |
c3e964b9 FF |
951 | |
952 | When we return, the bfd symcount is either zero or contains the correct | |
953 | number of symbols. | |
954 | */ | |
955 | ||
956 | static boolean | |
b6e7553c FF |
957 | nlm_slurp_symbol_table (abfd) |
958 | bfd *abfd; | |
c3e964b9 FF |
959 | { |
960 | Nlm_Internal_Fixed_Header *i_fxdhdrp; /* Nlm file header, internal form */ | |
326e32d7 ILT |
961 | bfd_size_type totsymcount; /* Number of NLM symbols */ |
962 | bfd_size_type symcount; /* Counter of NLM symbols */ | |
963 | nlm_symbol_type *sym; /* Pointer to current bfd symbol */ | |
964 | unsigned char symlength; /* Symbol length read into here */ | |
965 | unsigned char symtype; /* Type of debugging symbol */ | |
b6e7553c | 966 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* Symbol offsets read into here */ |
cdbfad1c ILT |
967 | boolean (*read_import_func) PARAMS ((bfd *, nlm_symbol_type *)); |
968 | boolean (*set_public_section_func) PARAMS ((bfd *, nlm_symbol_type *)); | |
c3e964b9 | 969 | |
b6e7553c FF |
970 | if (nlm_get_symbols (abfd) != NULL) |
971 | return (true); | |
c3e964b9 FF |
972 | |
973 | /* Read each raw NLM symbol, using the information to create a canonical bfd | |
974 | symbol table entry. | |
975 | ||
976 | Note that we allocate the initial bfd canonical symbol buffer based on a | |
977 | one-to-one mapping of the NLM symbols to canonical symbols. We actually | |
978 | use all the NLM symbols, so there will be no space left over at the end. | |
979 | When we have all the symbols, we build the caller's pointer vector. */ | |
980 | ||
326e32d7 | 981 | abfd->symcount = 0; |
c3e964b9 | 982 | i_fxdhdrp = nlm_fixed_header (abfd); |
326e32d7 ILT |
983 | totsymcount = (i_fxdhdrp->numberOfPublics |
984 | + i_fxdhdrp->numberOfDebugRecords | |
985 | + i_fxdhdrp->numberOfExternalReferences); | |
b6e7553c | 986 | if (totsymcount == 0) |
c3e964b9 FF |
987 | { |
988 | return (true); | |
989 | } | |
b6e7553c | 990 | |
326e32d7 | 991 | if (bfd_seek (abfd, i_fxdhdrp->publicsOffset, SEEK_SET) == -1) |
4002f18a | 992 | return (false); |
b6e7553c FF |
993 | |
994 | sym = ((nlm_symbol_type *) | |
995 | bfd_zalloc (abfd, totsymcount * sizeof (nlm_symbol_type))); | |
9783e04a DM |
996 | if (!sym) |
997 | { | |
80425e6c | 998 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
999 | return false; |
1000 | } | |
b6e7553c | 1001 | nlm_set_symbols (abfd, sym); |
c3e964b9 FF |
1002 | |
1003 | /* We use the bfd's symcount directly as the control count, so that early | |
1004 | termination of the loop leaves the symcount correct for the symbols that | |
1005 | were read. */ | |
1006 | ||
cdbfad1c | 1007 | set_public_section_func = nlm_set_public_section_func (abfd); |
326e32d7 ILT |
1008 | symcount = i_fxdhdrp->numberOfPublics; |
1009 | while (abfd->symcount < symcount) | |
c3e964b9 | 1010 | { |
326e32d7 | 1011 | if (bfd_read ((PTR) & symlength, sizeof (symlength), 1, abfd) |
c3e964b9 | 1012 | != sizeof (symlength)) |
4002f18a | 1013 | return (false); |
326e32d7 ILT |
1014 | sym->symbol.the_bfd = abfd; |
1015 | sym->symbol.name = bfd_alloc (abfd, symlength + 1); | |
1016 | if (!sym->symbol.name) | |
9783e04a | 1017 | { |
80425e6c | 1018 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1019 | return false; |
1020 | } | |
326e32d7 | 1021 | if (bfd_read ((PTR) sym->symbol.name, symlength, 1, abfd) |
c3e964b9 | 1022 | != symlength) |
4002f18a | 1023 | return (false); |
cdbfad1c | 1024 | /* Cast away const. */ |
326e32d7 | 1025 | ((char *) (sym->symbol.name))[symlength] = '\0'; |
b6e7553c | 1026 | if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) |
4002f18a | 1027 | return (false); |
326e32d7 ILT |
1028 | sym->symbol.flags = BSF_GLOBAL | BSF_EXPORT; |
1029 | sym->symbol.value = get_word (abfd, temp); | |
cdbfad1c | 1030 | if (set_public_section_func) |
c3e964b9 | 1031 | { |
cdbfad1c ILT |
1032 | /* Most backends can use the code below, but unfortunately |
1033 | some use a different scheme. */ | |
1034 | if ((*set_public_section_func) (abfd, sym) == false) | |
1035 | return false; | |
c3e964b9 FF |
1036 | } |
1037 | else | |
1038 | { | |
326e32d7 | 1039 | if (sym->symbol.value & NLM_HIBIT) |
cdbfad1c | 1040 | { |
326e32d7 ILT |
1041 | sym->symbol.value &= ~NLM_HIBIT; |
1042 | sym->symbol.flags |= BSF_FUNCTION; | |
1043 | sym->symbol.section = | |
cdbfad1c ILT |
1044 | bfd_get_section_by_name (abfd, NLM_CODE_NAME); |
1045 | } | |
1046 | else | |
1047 | { | |
326e32d7 | 1048 | sym->symbol.section = |
cdbfad1c ILT |
1049 | bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); |
1050 | } | |
c3e964b9 | 1051 | } |
326e32d7 ILT |
1052 | sym->rcnt = 0; |
1053 | abfd->symcount++; | |
c3e964b9 FF |
1054 | sym++; |
1055 | } | |
1056 | ||
45a78ebb ILT |
1057 | /* Read the debugging records. */ |
1058 | ||
326e32d7 | 1059 | if (i_fxdhdrp->numberOfDebugRecords > 0) |
45a78ebb | 1060 | { |
326e32d7 | 1061 | if (bfd_seek (abfd, i_fxdhdrp->debugInfoOffset, SEEK_SET) == -1) |
4002f18a | 1062 | return (false); |
45a78ebb | 1063 | |
326e32d7 ILT |
1064 | symcount += i_fxdhdrp->numberOfDebugRecords; |
1065 | while (abfd->symcount < symcount) | |
45a78ebb | 1066 | { |
326e32d7 | 1067 | if ((bfd_read ((PTR) & symtype, sizeof (symtype), 1, abfd) |
45a78ebb | 1068 | != sizeof (symtype)) |
326e32d7 ILT |
1069 | || bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp) |
1070 | || (bfd_read ((PTR) & symlength, sizeof (symlength), 1, abfd) | |
45a78ebb | 1071 | != sizeof (symlength))) |
4002f18a | 1072 | return false; |
326e32d7 ILT |
1073 | sym->symbol.the_bfd = abfd; |
1074 | sym->symbol.name = bfd_alloc (abfd, symlength + 1); | |
1075 | if (!sym->symbol.name) | |
9783e04a | 1076 | { |
80425e6c | 1077 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1078 | return false; |
1079 | } | |
326e32d7 | 1080 | if (bfd_read ((PTR) sym->symbol.name, symlength, 1, abfd) |
45a78ebb | 1081 | != symlength) |
4002f18a | 1082 | return (false); |
cdbfad1c | 1083 | /* Cast away const. */ |
326e32d7 ILT |
1084 | ((char *) (sym->symbol.name))[symlength] = '\0'; |
1085 | sym->symbol.flags = BSF_LOCAL; | |
1086 | sym->symbol.value = get_word (abfd, temp); | |
45a78ebb ILT |
1087 | if (symtype == 0) |
1088 | { | |
326e32d7 | 1089 | sym->symbol.section = |
45a78ebb ILT |
1090 | bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); |
1091 | } | |
1092 | else if (symtype == 1) | |
1093 | { | |
326e32d7 ILT |
1094 | sym->symbol.flags |= BSF_FUNCTION; |
1095 | sym->symbol.section = | |
45a78ebb ILT |
1096 | bfd_get_section_by_name (abfd, NLM_CODE_NAME); |
1097 | } | |
1098 | else | |
1099 | { | |
326e32d7 | 1100 | sym->symbol.section = &bfd_abs_section; |
45a78ebb | 1101 | } |
326e32d7 ILT |
1102 | sym->rcnt = 0; |
1103 | abfd->symcount++; | |
45a78ebb ILT |
1104 | sym++; |
1105 | } | |
1106 | } | |
1107 | ||
b6e7553c FF |
1108 | /* Read in the import records. We can only do this if we know how |
1109 | to read relocs for this target. */ | |
c3e964b9 | 1110 | |
cdbfad1c ILT |
1111 | read_import_func = nlm_read_import_func (abfd); |
1112 | if (read_import_func != NULL) | |
c3e964b9 | 1113 | { |
326e32d7 | 1114 | if (bfd_seek (abfd, i_fxdhdrp->externalReferencesOffset, SEEK_SET) |
b6e7553c | 1115 | == -1) |
4002f18a | 1116 | return (false); |
326e32d7 ILT |
1117 | |
1118 | symcount += i_fxdhdrp->numberOfExternalReferences; | |
1119 | while (abfd->symcount < symcount) | |
b6e7553c | 1120 | { |
cdbfad1c ILT |
1121 | if ((*read_import_func) (abfd, sym) == false) |
1122 | return false; | |
c3e964b9 | 1123 | sym++; |
cdbfad1c | 1124 | abfd->symcount++; |
c3e964b9 | 1125 | } |
c3e964b9 FF |
1126 | } |
1127 | ||
1128 | return (true); | |
1129 | } | |
b6e7553c FF |
1130 | \f |
1131 | /* Get the relocs for an NLM file. There are two types of relocs. | |
1132 | Imports are relocs against symbols defined in other NLM files. We | |
1133 | treat these as relocs against global symbols. Relocation fixups | |
1134 | are internal relocs. | |
1135 | ||
1136 | The actual format used to store the relocs is machine specific. */ | |
1137 | ||
1138 | /* Read in the relocation fixup information. This is stored in | |
1139 | nlm_relocation_fixups, an array of arelent structures, and | |
1140 | nlm_relocation_fixup_secs, an array of section pointers. The | |
1141 | section pointers are needed because the relocs are not sorted by | |
1142 | section. */ | |
1143 | ||
1144 | static boolean | |
1145 | nlm_slurp_reloc_fixups (abfd) | |
1146 | bfd *abfd; | |
1147 | { | |
1148 | boolean (*read_func) PARAMS ((bfd *, nlm_symbol_type *, asection **, | |
1149 | arelent *)); | |
1150 | bfd_size_type count; | |
1151 | arelent *rels; | |
1152 | asection **secs; | |
1153 | ||
1154 | if (nlm_relocation_fixups (abfd) != NULL) | |
1155 | return true; | |
1156 | read_func = nlm_read_reloc_func (abfd); | |
1157 | if (read_func == NULL) | |
1158 | return true; | |
1159 | ||
1160 | if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset, | |
1161 | SEEK_SET) != 0) | |
4002f18a | 1162 | return false; |
b6e7553c FF |
1163 | |
1164 | count = nlm_fixed_header (abfd)->numberOfRelocationFixups; | |
1165 | rels = (arelent *) bfd_alloc (abfd, count * sizeof (arelent)); | |
1166 | secs = (asection **) bfd_alloc (abfd, count * sizeof (asection *)); | |
b3cee0a9 | 1167 | if ((rels == NULL || secs == NULL) && count != 0) |
b6e7553c | 1168 | { |
80425e6c | 1169 | bfd_set_error (bfd_error_no_memory); |
b6e7553c FF |
1170 | return false; |
1171 | } | |
1172 | nlm_relocation_fixups (abfd) = rels; | |
1173 | nlm_relocation_fixup_secs (abfd) = secs; | |
1174 | ||
1175 | /* We have to read piece by piece, because we don't know how large | |
1176 | the machine specific reloc information is. */ | |
1177 | while (count-- != 0) | |
1178 | { | |
1179 | if ((*read_func) (abfd, (nlm_symbol_type *) NULL, secs, rels) == false) | |
1180 | { | |
1181 | nlm_relocation_fixups (abfd) = NULL; | |
1182 | nlm_relocation_fixup_secs (abfd) = NULL; | |
1183 | return false; | |
1184 | } | |
1185 | ++secs; | |
1186 | ++rels; | |
1187 | } | |
1188 | ||
1189 | return true; | |
1190 | } | |
1191 | ||
1192 | /* Get the number of relocs. This really just returns an upper bound, | |
1193 | since it does not attempt to distinguish them based on the section. | |
1194 | That will be handled when they are actually read. */ | |
1195 | ||
326e32d7 | 1196 | long |
b6e7553c FF |
1197 | nlm_get_reloc_upper_bound (abfd, sec) |
1198 | bfd *abfd; | |
1199 | asection *sec; | |
1200 | { | |
1201 | nlm_symbol_type *syms; | |
1202 | bfd_size_type count; | |
1203 | unsigned int ret; | |
1204 | ||
1205 | /* If we don't know how to read relocs, just return 0. */ | |
1206 | if (nlm_read_reloc_func (abfd) == NULL) | |
326e32d7 | 1207 | return -1; |
b6e7553c FF |
1208 | /* Make sure we have either the code or the data section. */ |
1209 | if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0) | |
1210 | return 0; | |
1211 | ||
1212 | syms = nlm_get_symbols (abfd); | |
1213 | if (syms == NULL) | |
1214 | { | |
8b977377 | 1215 | if (nlm_slurp_symbol_table (abfd) == false) |
326e32d7 | 1216 | return -1; |
b6e7553c FF |
1217 | syms = nlm_get_symbols (abfd); |
1218 | } | |
1219 | ||
1220 | ret = nlm_fixed_header (abfd)->numberOfRelocationFixups; | |
1221 | ||
1222 | count = bfd_get_symcount (abfd); | |
1223 | while (count-- != 0) | |
1224 | { | |
1225 | ret += syms->rcnt; | |
1226 | ++syms; | |
1227 | } | |
1228 | ||
1229 | return (ret + 1) * sizeof (arelent *); | |
1230 | } | |
1231 | ||
1232 | /* Get the relocs themselves. */ | |
1233 | ||
326e32d7 | 1234 | long |
b6e7553c FF |
1235 | nlm_canonicalize_reloc (abfd, sec, relptr, symbols) |
1236 | bfd *abfd; | |
1237 | asection *sec; | |
1238 | arelent **relptr; | |
1239 | asymbol **symbols; | |
1240 | { | |
1241 | arelent *rels; | |
1242 | asection **secs; | |
1243 | bfd_size_type count, i; | |
1244 | unsigned int ret; | |
1245 | ||
1246 | /* Get the relocation fixups. */ | |
1247 | rels = nlm_relocation_fixups (abfd); | |
1248 | if (rels == NULL) | |
1249 | { | |
8b977377 | 1250 | if (nlm_slurp_reloc_fixups (abfd) == false) |
326e32d7 | 1251 | return -1; |
b6e7553c | 1252 | rels = nlm_relocation_fixups (abfd); |
b6e7553c FF |
1253 | } |
1254 | secs = nlm_relocation_fixup_secs (abfd); | |
1255 | ||
1256 | ret = 0; | |
1257 | count = nlm_fixed_header (abfd)->numberOfRelocationFixups; | |
1258 | for (i = 0; i < count; i++, rels++, secs++) | |
1259 | { | |
1260 | if (*secs == sec) | |
1261 | { | |
1262 | *relptr++ = rels; | |
1263 | ++ret; | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | /* Get the import symbols. */ | |
1268 | count = bfd_get_symcount (abfd); | |
1269 | for (i = 0; i < count; i++, symbols++) | |
1270 | { | |
1271 | asymbol *sym; | |
1272 | ||
1273 | sym = *symbols; | |
1274 | if (bfd_asymbol_flavour (sym) == bfd_target_nlm_flavour) | |
1275 | { | |
1276 | nlm_symbol_type *nlm_sym; | |
1277 | bfd_size_type j; | |
1278 | ||
1279 | nlm_sym = (nlm_symbol_type *) sym; | |
1280 | for (j = 0; j < nlm_sym->rcnt; j++) | |
1281 | { | |
1282 | if (nlm_sym->relocs[j].section == sec) | |
1283 | { | |
1284 | *relptr = &nlm_sym->relocs[j].reloc; | |
1285 | (*relptr)->sym_ptr_ptr = symbols; | |
1286 | ++relptr; | |
1287 | ++ret; | |
1288 | } | |
1289 | } | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | *relptr = NULL; | |
1294 | ||
326e32d7 | 1295 | return ret; |
b6e7553c FF |
1296 | } |
1297 | \f | |
1298 | /* Compute the section file positions for an NLM file. All variable | |
1299 | length data in the file headers must be set before this function is | |
1300 | called. If the variable length data is changed later, the | |
1301 | resulting object file will be incorrect. Unfortunately, there is | |
1302 | no way to check this. | |
1303 | ||
1304 | This routine also sets the Size and Offset fields in the fixed | |
7389debf ILT |
1305 | header. |
1306 | ||
1307 | It also looks over the symbols and moves any common symbols into | |
1308 | the .bss section; NLM has no way to represent a common symbol. | |
1309 | This approach means that either the symbols must already have been | |
1310 | set at this point, or there must be no common symbols. We need to | |
1311 | move the symbols at this point so that mangle_relocs can see the | |
1312 | final values. */ | |
b6e7553c FF |
1313 | |
1314 | static boolean | |
1315 | nlm_compute_section_file_positions (abfd) | |
1316 | bfd *abfd; | |
1317 | { | |
1318 | file_ptr sofar; | |
1319 | asection *sec; | |
1320 | bfd_vma text, data, bss; | |
1321 | bfd_vma text_low, data_low; | |
1322 | int text_align, data_align, other_align; | |
1323 | file_ptr text_ptr, data_ptr, other_ptr; | |
45a78ebb | 1324 | asection *bss_sec; |
7389debf | 1325 | asymbol **sym_ptr_ptr; |
b6e7553c FF |
1326 | |
1327 | if (abfd->output_has_begun == true) | |
1328 | return true; | |
1329 | ||
45a78ebb ILT |
1330 | /* Make sure we have a section to hold uninitialized data. */ |
1331 | bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); | |
1332 | if (bss_sec == NULL) | |
1333 | { | |
326e32d7 ILT |
1334 | if (!add_bfd_section (abfd, NLM_UNINITIALIZED_DATA_NAME, |
1335 | (file_ptr) 0, (bfd_size_type) 0, | |
1336 | SEC_ALLOC)) | |
45a78ebb ILT |
1337 | return false; |
1338 | bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); | |
1339 | } | |
1340 | ||
b6e7553c FF |
1341 | abfd->output_has_begun = true; |
1342 | ||
1343 | /* The fixed header. */ | |
cdbfad1c | 1344 | sofar = nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd); |
b6e7553c FF |
1345 | |
1346 | /* The variable header. */ | |
1347 | sofar += (sizeof (nlm_variable_header (abfd)->descriptionLength) | |
326e32d7 ILT |
1348 | + nlm_variable_header (abfd)->descriptionLength + 1 |
1349 | + NLM_TARGET_LONG_SIZE /* stackSize */ | |
1350 | + NLM_TARGET_LONG_SIZE /* reserved */ | |
1351 | + sizeof (nlm_variable_header (abfd)->oldThreadName) | |
1352 | + sizeof (nlm_variable_header (abfd)->screenNameLength) | |
1353 | + nlm_variable_header (abfd)->screenNameLength + 1 | |
1354 | + sizeof (nlm_variable_header (abfd)->threadNameLength) | |
1355 | + nlm_variable_header (abfd)->threadNameLength + 1); | |
b6e7553c FF |
1356 | |
1357 | /* The auxiliary headers. */ | |
1358 | if (find_nonzero ((PTR) nlm_version_header (abfd), | |
1359 | sizeof (Nlm_Internal_Version_Header))) | |
1360 | sofar += sizeof (Nlm_External_Version_Header); | |
1361 | if (find_nonzero ((PTR) nlm_extended_header (abfd), | |
1362 | sizeof (Nlm_Internal_Extended_Header))) | |
1363 | sofar += sizeof (Nlm_External_Extended_Header); | |
1364 | if (find_nonzero ((PTR) nlm_custom_header (abfd), | |
1365 | sizeof (Nlm_Internal_Custom_Header))) | |
476d01f0 ILT |
1366 | sofar += (sizeof (Nlm_External_Custom_Header) |
1367 | + nlm_custom_header (abfd)->dataLength); | |
b6e7553c FF |
1368 | if (find_nonzero ((PTR) nlm_copyright_header (abfd), |
1369 | sizeof (Nlm_Internal_Copyright_Header))) | |
1370 | sofar += (sizeof (Nlm_External_Copyright_Header) | |
326e32d7 | 1371 | + nlm_copyright_header (abfd)->copyrightMessageLength + 1); |
6c534df0 ILT |
1372 | if (find_nonzero ((PTR) nlm_cygnus_section_header (abfd), |
1373 | sizeof (Nlm_Internal_Cygnus_Section_Header))) | |
1374 | sofar += sizeof (Nlm_External_Cygnus_Section_Header); | |
b6e7553c FF |
1375 | |
1376 | /* Compute the section file positions in two passes. First get the | |
1377 | sizes of the text and data sections, and then set the file | |
1378 | positions. This code aligns the sections in the file using the | |
1379 | same alignment restrictions that apply to the sections in memory; | |
1380 | this may not be necessary. */ | |
1381 | text = 0; | |
326e32d7 | 1382 | text_low = (bfd_vma) - 1; |
b6e7553c FF |
1383 | text_align = 0; |
1384 | data = 0; | |
326e32d7 | 1385 | data_low = (bfd_vma) - 1; |
b6e7553c FF |
1386 | data_align = 0; |
1387 | bss = 0; | |
1388 | other_align = 0; | |
1389 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1390 | { | |
1391 | flagword f; | |
1392 | ||
1393 | sec->_raw_size = BFD_ALIGN (sec->_raw_size, 1 << sec->alignment_power); | |
1394 | ||
1395 | f = bfd_get_section_flags (abfd, sec); | |
1396 | if (f & SEC_CODE) | |
1397 | { | |
1398 | text += sec->_raw_size; | |
1399 | if (bfd_get_section_vma (abfd, sec) < text_low) | |
1400 | text_low = bfd_get_section_vma (abfd, sec); | |
1401 | if (sec->alignment_power > text_align) | |
1402 | text_align = sec->alignment_power; | |
1403 | } | |
1404 | else if (f & SEC_DATA) | |
1405 | { | |
1406 | data += sec->_raw_size; | |
1407 | if (bfd_get_section_vma (abfd, sec) < data_low) | |
1408 | data_low = bfd_get_section_vma (abfd, sec); | |
1409 | if (sec->alignment_power > data_align) | |
1410 | data_align = sec->alignment_power; | |
1411 | } | |
1412 | else if (f & SEC_HAS_CONTENTS) | |
1413 | { | |
1414 | if (sec->alignment_power > other_align) | |
1415 | other_align = sec->alignment_power; | |
1416 | } | |
1417 | else if (f & SEC_ALLOC) | |
1418 | bss += sec->_raw_size; | |
1419 | } | |
1420 | ||
1421 | nlm_set_text_low (abfd, text_low); | |
1422 | nlm_set_data_low (abfd, data_low); | |
1423 | ||
9783e04a DM |
1424 | if (nlm_no_uninitialized_data (abfd)) |
1425 | { | |
1426 | /* This NetWare format does not use uninitialized data. We must | |
1427 | increase the size of the data section. We will never wind up | |
1428 | writing those file locations, so they will remain zero. */ | |
1429 | data += bss; | |
1430 | bss = 0; | |
1431 | } | |
1432 | ||
b6e7553c FF |
1433 | text_ptr = BFD_ALIGN (sofar, 1 << text_align); |
1434 | data_ptr = BFD_ALIGN (text_ptr + text, 1 << data_align); | |
1435 | other_ptr = BFD_ALIGN (data_ptr + data, 1 << other_align); | |
1436 | ||
1437 | /* Fill in some fields in the header for which we now have the | |
1438 | information. */ | |
1439 | nlm_fixed_header (abfd)->codeImageOffset = text_ptr; | |
1440 | nlm_fixed_header (abfd)->codeImageSize = text; | |
1441 | nlm_fixed_header (abfd)->dataImageOffset = data_ptr; | |
1442 | nlm_fixed_header (abfd)->dataImageSize = data; | |
1443 | nlm_fixed_header (abfd)->uninitializedDataSize = bss; | |
1444 | ||
1445 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1446 | { | |
1447 | flagword f; | |
1448 | ||
1449 | f = bfd_get_section_flags (abfd, sec); | |
1450 | ||
1451 | if (f & SEC_CODE) | |
1452 | { | |
1453 | sec->filepos = text_ptr; | |
1454 | text_ptr += sec->_raw_size; | |
1455 | } | |
1456 | else if (f & SEC_DATA) | |
1457 | { | |
1458 | sec->filepos = data_ptr; | |
1459 | data_ptr += sec->_raw_size; | |
1460 | } | |
1461 | else if (f & SEC_HAS_CONTENTS) | |
1462 | { | |
1463 | sec->filepos = other_ptr; | |
1464 | other_ptr += sec->_raw_size; | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | nlm_fixed_header (abfd)->relocationFixupOffset = other_ptr; | |
1469 | ||
7389debf ILT |
1470 | /* Move all common symbols into the .bss section. */ |
1471 | ||
1472 | sym_ptr_ptr = bfd_get_outsymbols (abfd); | |
1473 | if (sym_ptr_ptr != NULL) | |
1474 | { | |
1475 | asymbol **sym_end; | |
7389debf ILT |
1476 | bfd_vma add; |
1477 | ||
7389debf ILT |
1478 | sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); |
1479 | add = 0; | |
1480 | for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) | |
1481 | { | |
1482 | asymbol *sym; | |
1483 | bfd_vma size; | |
1484 | ||
1485 | sym = *sym_ptr_ptr; | |
1486 | ||
326e32d7 | 1487 | if (!bfd_is_com_section (bfd_get_section (sym))) |
7389debf ILT |
1488 | continue; |
1489 | ||
1490 | /* Put the common symbol in the .bss section, and increase | |
1491 | the size of the .bss section by the size of the common | |
1492 | symbol (which is the old value of the symbol). */ | |
1493 | sym->section = bss_sec; | |
1494 | size = sym->value; | |
1495 | sym->value = bss_sec->_raw_size + add; | |
1496 | add += size; | |
1497 | add = BFD_ALIGN (add, 1 << bss_sec->alignment_power); | |
1498 | } | |
9783e04a DM |
1499 | if (add != 0) |
1500 | { | |
1501 | if (nlm_no_uninitialized_data (abfd)) | |
1502 | { | |
1503 | /* We could handle this case, but so far it hasn't been | |
1504 | necessary. */ | |
1505 | abort (); | |
1506 | } | |
1507 | nlm_fixed_header (abfd)->uninitializedDataSize += add; | |
1508 | bss_sec->_raw_size += add; | |
1509 | } | |
7389debf ILT |
1510 | } |
1511 | ||
b6e7553c FF |
1512 | return true; |
1513 | } | |
1514 | ||
1515 | /* Set the contents of a section. To do this we need to know where | |
1516 | the section is going to be located in the output file. That means | |
1517 | that the sizes of all the sections must be set, and all the | |
1518 | variable size header information must be known. */ | |
1519 | ||
1520 | boolean | |
1521 | nlm_set_section_contents (abfd, section, location, offset, count) | |
1522 | bfd *abfd; | |
1523 | asection *section; | |
1524 | PTR location; | |
1525 | file_ptr offset; | |
1526 | bfd_size_type count; | |
1527 | { | |
1528 | if (abfd->output_has_begun == false | |
1529 | && nlm_compute_section_file_positions (abfd) == false) | |
1530 | return false; | |
1531 | ||
1532 | if (count == 0) | |
1533 | return true; | |
1534 | ||
7389debf ILT |
1535 | /* i386 NetWare has a very restricted set of relocs. In order for |
1536 | objcopy to work, the NLM i386 backend needs a chance to rework | |
1537 | the section contents so that its set of relocs will work. If all | |
1538 | the relocs are already acceptable, this will not do anything. */ | |
1539 | if (section->reloc_count != 0) | |
1540 | { | |
45a78ebb ILT |
1541 | boolean (*mangle_relocs_func) PARAMS ((bfd *, asection *, PTR, |
1542 | bfd_vma, bfd_size_type)); | |
7389debf ILT |
1543 | |
1544 | mangle_relocs_func = nlm_mangle_relocs_func (abfd); | |
1545 | if (mangle_relocs_func != NULL) | |
1546 | { | |
326e32d7 ILT |
1547 | if (!(*mangle_relocs_func) (abfd, section, location, |
1548 | (bfd_vma) offset, count)) | |
7389debf ILT |
1549 | return false; |
1550 | } | |
1551 | } | |
1552 | ||
b6e7553c FF |
1553 | if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0 |
1554 | || bfd_write (location, 1, count, abfd) != count) | |
4002f18a | 1555 | return false; |
b6e7553c FF |
1556 | |
1557 | return true; | |
1558 | } | |
1559 | ||
1560 | /* We need to sort a list of relocs associated with sections when we | |
1561 | write out the external relocs. */ | |
1562 | ||
b6e7553c FF |
1563 | static int |
1564 | nlm_external_reloc_compare (p1, p2) | |
1565 | const void *p1; | |
1566 | const void *p2; | |
1567 | { | |
1568 | const struct reloc_and_sec *r1 = (const struct reloc_and_sec *) p1; | |
1569 | const struct reloc_and_sec *r2 = (const struct reloc_and_sec *) p2; | |
9783e04a | 1570 | int cmp; |
b6e7553c | 1571 | |
9783e04a DM |
1572 | cmp = strcmp ((*r1->rel->sym_ptr_ptr)->name, |
1573 | (*r2->rel->sym_ptr_ptr)->name); | |
1574 | if (cmp != 0) | |
1575 | return cmp; | |
1576 | ||
1577 | /* We sort by address within symbol to make the sort more stable and | |
1578 | increase the chances that different hosts will generate bit for | |
1579 | bit equivalent results. */ | |
1580 | return (int) (r1->rel->address - r2->rel->address); | |
b6e7553c FF |
1581 | } |
1582 | ||
1583 | /* Write out an NLM file. We write out the information in this order: | |
1584 | fixed header | |
1585 | variable header | |
1586 | auxiliary headers | |
1587 | code sections | |
1588 | data sections | |
1589 | other sections (custom data, messages, help, shared NLM, RPC, | |
1590 | module dependencies) | |
1591 | relocation fixups | |
1592 | external references (imports) | |
1593 | public symbols (exports) | |
1594 | debugging records | |
1595 | This is similar to the order used by the NetWare tools; the | |
1596 | difference is that NetWare puts the sections other than code, data | |
1597 | and custom data at the end of the NLM. It is convenient for us to | |
1598 | know where the sections are going to be before worrying about the | |
1599 | size of the other information. | |
1600 | ||
1601 | By the time this function is called, all the section data should | |
1602 | have been output using set_section_contents. Note that custom | |
1603 | data, the message file, the help file, the shared NLM file, the RPC | |
1604 | data, and the module dependencies are all considered to be | |
1605 | sections; the caller is responsible for filling in the offset and | |
1606 | length fields in the NLM headers. The relocation fixups and | |
1607 | imports are both obtained from the list of relocs attached to each | |
1608 | section. The exports and debugging records are obtained from the | |
1609 | list of outsymbols. */ | |
1610 | ||
1611 | boolean | |
1612 | nlm_write_object_contents (abfd) | |
1613 | bfd *abfd; | |
1614 | { | |
b6e7553c | 1615 | asection *sec; |
cdbfad1c | 1616 | boolean (*write_import_func) PARAMS ((bfd *, asection *, arelent *)); |
b6e7553c FF |
1617 | bfd_size_type external_reloc_count, internal_reloc_count, i, c; |
1618 | struct reloc_and_sec *external_relocs; | |
1619 | asymbol **sym_ptr_ptr; | |
45a78ebb | 1620 | file_ptr last; |
cdbfad1c | 1621 | boolean (*write_prefix_func) PARAMS ((bfd *)); |
80425e6c JK |
1622 | unsigned char *fixed_header = NULL; |
1623 | ||
1624 | fixed_header = (unsigned char *) malloc (nlm_fixed_header_size (abfd)); | |
1625 | if (fixed_header == NULL) | |
1626 | { | |
1627 | bfd_set_error (bfd_error_no_memory); | |
1628 | goto error_return; | |
1629 | } | |
b6e7553c FF |
1630 | |
1631 | if (abfd->output_has_begun == false | |
1632 | && nlm_compute_section_file_positions (abfd) == false) | |
80425e6c | 1633 | goto error_return; |
b6e7553c FF |
1634 | |
1635 | /* Write out the variable length headers. */ | |
cdbfad1c | 1636 | if (bfd_seek (abfd, |
326e32d7 | 1637 | nlm_optional_prefix_size (abfd) + nlm_fixed_header_size (abfd), |
cdbfad1c | 1638 | SEEK_SET) != 0) |
4002f18a | 1639 | goto error_return; |
b6e7553c FF |
1640 | if (nlm_swap_variable_header_out (abfd) == false |
1641 | || nlm_swap_auxiliary_headers_out (abfd) == false) | |
1642 | { | |
80425e6c JK |
1643 | bfd_set_error (bfd_error_system_call); |
1644 | goto error_return; | |
b6e7553c FF |
1645 | } |
1646 | ||
1647 | /* A weak check on whether the section file positions were | |
1648 | reasonable. */ | |
1649 | if (bfd_tell (abfd) > nlm_fixed_header (abfd)->codeImageOffset) | |
1650 | { | |
80425e6c JK |
1651 | bfd_set_error (bfd_error_invalid_operation); |
1652 | goto error_return; | |
b6e7553c FF |
1653 | } |
1654 | ||
1655 | /* Advance to the relocs. */ | |
1656 | if (bfd_seek (abfd, nlm_fixed_header (abfd)->relocationFixupOffset, | |
1657 | SEEK_SET) != 0) | |
4002f18a | 1658 | goto error_return; |
b6e7553c FF |
1659 | |
1660 | /* The format of the relocation entries is dependent upon the | |
1661 | particular target. We use an external routine to write the reloc | |
1662 | out. */ | |
cdbfad1c | 1663 | write_import_func = nlm_write_import_func (abfd); |
b6e7553c FF |
1664 | |
1665 | /* Write out the internal relocation fixups. While we're looping | |
1666 | over the relocs, we also count the external relocs, which is | |
1667 | needed when they are written out below. */ | |
1668 | internal_reloc_count = 0; | |
1669 | external_reloc_count = 0; | |
1670 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1671 | { | |
1672 | arelent **rel_ptr_ptr, **rel_end; | |
1673 | ||
1674 | if (sec->reloc_count == 0) | |
1675 | continue; | |
1676 | ||
326e32d7 | 1677 | /* We can only represent relocs within a code or data |
cdbfad1c | 1678 | section. We ignore them for a debugging section. */ |
b6e7553c | 1679 | if ((bfd_get_section_flags (abfd, sec) & (SEC_CODE | SEC_DATA)) == 0) |
cdbfad1c | 1680 | continue; |
b6e7553c | 1681 | |
cdbfad1c ILT |
1682 | /* We need to know how to write out imports */ |
1683 | if (write_import_func == NULL) | |
b6e7553c | 1684 | { |
80425e6c JK |
1685 | bfd_set_error (bfd_error_invalid_operation); |
1686 | goto error_return; | |
b6e7553c FF |
1687 | } |
1688 | ||
1689 | rel_ptr_ptr = sec->orelocation; | |
1690 | rel_end = rel_ptr_ptr + sec->reloc_count; | |
1691 | for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++) | |
1692 | { | |
1693 | arelent *rel; | |
1694 | asymbol *sym; | |
1695 | ||
1696 | rel = *rel_ptr_ptr; | |
1697 | sym = *rel->sym_ptr_ptr; | |
1698 | ||
7389debf | 1699 | if (bfd_get_section (sym) != &bfd_und_section) |
b6e7553c FF |
1700 | { |
1701 | ++internal_reloc_count; | |
cdbfad1c | 1702 | if ((*write_import_func) (abfd, sec, rel) == false) |
80425e6c | 1703 | goto error_return; |
b6e7553c FF |
1704 | } |
1705 | else | |
1706 | ++external_reloc_count; | |
1707 | } | |
1708 | } | |
1709 | nlm_fixed_header (abfd)->numberOfRelocationFixups = internal_reloc_count; | |
1710 | ||
1711 | /* Write out the imports (relocs against external symbols). These | |
1712 | are output as a symbol name followed by all the relocs for that | |
1713 | symbol, so we must first gather together all the relocs against | |
1714 | external symbols and sort them. */ | |
1715 | external_relocs = | |
1716 | (struct reloc_and_sec *) bfd_alloc (abfd, | |
1717 | (external_reloc_count | |
1718 | * sizeof (struct reloc_and_sec))); | |
1719 | if (external_relocs == (struct reloc_and_sec *) NULL) | |
1720 | { | |
80425e6c JK |
1721 | bfd_set_error (bfd_error_no_memory); |
1722 | goto error_return; | |
b6e7553c FF |
1723 | } |
1724 | i = 0; | |
1725 | for (sec = abfd->sections; sec != (asection *) NULL; sec = sec->next) | |
1726 | { | |
1727 | arelent **rel_ptr_ptr, **rel_end; | |
1728 | ||
1729 | if (sec->reloc_count == 0) | |
1730 | continue; | |
1731 | ||
1732 | rel_ptr_ptr = sec->orelocation; | |
1733 | rel_end = rel_ptr_ptr + sec->reloc_count; | |
1734 | for (; rel_ptr_ptr < rel_end; rel_ptr_ptr++) | |
1735 | { | |
1736 | arelent *rel; | |
1737 | asymbol *sym; | |
1738 | ||
1739 | rel = *rel_ptr_ptr; | |
1740 | sym = *rel->sym_ptr_ptr; | |
1741 | ||
7389debf | 1742 | if (bfd_get_section (sym) != &bfd_und_section) |
b6e7553c FF |
1743 | continue; |
1744 | ||
1745 | external_relocs[i].rel = rel; | |
1746 | external_relocs[i].sec = sec; | |
1747 | ++i; | |
1748 | } | |
1749 | } | |
1750 | ||
1751 | BFD_ASSERT (i == external_reloc_count); | |
1752 | ||
1753 | /* Sort the external relocs by name. */ | |
9783e04a | 1754 | qsort ((PTR) external_relocs, (size_t) external_reloc_count, |
b6e7553c FF |
1755 | sizeof (struct reloc_and_sec), nlm_external_reloc_compare); |
1756 | ||
1757 | /* Write out the external relocs. */ | |
1758 | nlm_fixed_header (abfd)->externalReferencesOffset = bfd_tell (abfd); | |
1759 | c = 0; | |
1760 | i = 0; | |
1761 | while (i < external_reloc_count) | |
1762 | { | |
1763 | arelent *rel; | |
1764 | asymbol *sym; | |
7389debf | 1765 | bfd_size_type j, cnt; |
b6e7553c FF |
1766 | |
1767 | ++c; | |
1768 | ||
1769 | rel = external_relocs[i].rel; | |
1770 | sym = *rel->sym_ptr_ptr; | |
1771 | ||
b6e7553c | 1772 | cnt = 0; |
7389debf ILT |
1773 | for (j = i; |
1774 | (j < external_reloc_count | |
1775 | && *external_relocs[j].rel->sym_ptr_ptr == sym); | |
1776 | j++) | |
b6e7553c FF |
1777 | ++cnt; |
1778 | ||
cdbfad1c ILT |
1779 | if ((*nlm_write_external_func (abfd)) (abfd, cnt, sym, |
1780 | &external_relocs[i]) | |
1781 | == false) | |
80425e6c | 1782 | goto error_return; |
b6e7553c | 1783 | |
cdbfad1c | 1784 | i += cnt; |
b6e7553c | 1785 | } |
cdbfad1c | 1786 | |
b6e7553c FF |
1787 | nlm_fixed_header (abfd)->numberOfExternalReferences = c; |
1788 | ||
1789 | /* Write out the public symbols (exports). */ | |
1790 | sym_ptr_ptr = bfd_get_outsymbols (abfd); | |
1791 | if (sym_ptr_ptr != (asymbol **) NULL) | |
1792 | { | |
cdbfad1c | 1793 | bfd_vma (*get_public_offset_func) PARAMS ((bfd *, asymbol *)); |
326e32d7 | 1794 | boolean (*write_export_func) PARAMS ((bfd *, asymbol *, bfd_vma)); |
9783e04a | 1795 | |
b6e7553c FF |
1796 | asymbol **sym_end; |
1797 | ||
1798 | nlm_fixed_header (abfd)->publicsOffset = bfd_tell (abfd); | |
cdbfad1c | 1799 | get_public_offset_func = nlm_get_public_offset_func (abfd); |
9783e04a | 1800 | write_export_func = nlm_write_export_func (abfd); |
b6e7553c FF |
1801 | c = 0; |
1802 | sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); | |
1803 | for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) | |
1804 | { | |
1805 | asymbol *sym; | |
1806 | bfd_byte len; | |
1807 | bfd_vma offset; | |
b6e7553c FF |
1808 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; |
1809 | ||
1810 | sym = *sym_ptr_ptr; | |
1811 | ||
7389debf ILT |
1812 | if ((sym->flags & (BSF_EXPORT | BSF_GLOBAL)) == 0 |
1813 | || bfd_get_section (sym) == &bfd_und_section) | |
b6e7553c FF |
1814 | continue; |
1815 | ||
1816 | ++c; | |
c3e964b9 | 1817 | |
cdbfad1c | 1818 | if (get_public_offset_func) |
b6e7553c | 1819 | { |
cdbfad1c ILT |
1820 | /* Most backends can use the code below, but |
1821 | unfortunately some use a different scheme. */ | |
1822 | offset = (*get_public_offset_func) (abfd, sym); | |
b6e7553c FF |
1823 | } |
1824 | else | |
1825 | { | |
cdbfad1c ILT |
1826 | offset = bfd_asymbol_value (sym); |
1827 | sec = sym->section; | |
1828 | if (sec->flags & SEC_CODE) | |
1829 | { | |
1830 | offset -= nlm_get_text_low (abfd); | |
1831 | offset |= NLM_HIBIT; | |
1832 | } | |
1833 | else if (sec->flags & (SEC_DATA | SEC_ALLOC)) | |
1834 | { | |
1835 | /* SEC_ALLOC is for the .bss section. */ | |
1836 | offset -= nlm_get_data_low (abfd); | |
1837 | } | |
1838 | else | |
1839 | { | |
1840 | /* We can't handle an exported symbol that is not in | |
1841 | the code or data segment. */ | |
80425e6c JK |
1842 | bfd_set_error (bfd_error_invalid_operation); |
1843 | goto error_return; | |
cdbfad1c | 1844 | } |
b6e7553c FF |
1845 | } |
1846 | ||
9783e04a | 1847 | if (write_export_func) |
b6e7553c | 1848 | { |
9783e04a | 1849 | if ((*write_export_func) (abfd, sym, offset) == false) |
80425e6c | 1850 | goto error_return; |
b6e7553c | 1851 | } |
9783e04a DM |
1852 | else |
1853 | { | |
1854 | len = strlen (sym->name); | |
1855 | if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) | |
1856 | != sizeof (bfd_byte)) | |
1857 | || bfd_write (sym->name, len, 1, abfd) != len) | |
4002f18a | 1858 | goto error_return; |
326e32d7 | 1859 | |
9783e04a DM |
1860 | put_word (abfd, offset, temp); |
1861 | if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
4002f18a | 1862 | goto error_return; |
326e32d7 | 1863 | } |
9783e04a | 1864 | } |
b6e7553c FF |
1865 | nlm_fixed_header (abfd)->numberOfPublics = c; |
1866 | ||
45a78ebb ILT |
1867 | /* Write out the debugging records. The NLM conversion program |
1868 | wants to be able to inhibit this, so as a special hack if | |
1869 | debugInfoOffset is set to -1 we don't write any debugging | |
1870 | information. This can not be handled by fiddling with the | |
1871 | symbol table, because exported symbols appear in both the | |
1872 | exported symbol list and the debugging information. */ | |
326e32d7 | 1873 | if (nlm_fixed_header (abfd)->debugInfoOffset == (file_ptr) - 1) |
b6e7553c | 1874 | { |
45a78ebb ILT |
1875 | nlm_fixed_header (abfd)->debugInfoOffset = 0; |
1876 | nlm_fixed_header (abfd)->numberOfDebugRecords = 0; | |
1877 | } | |
1878 | else | |
1879 | { | |
1880 | nlm_fixed_header (abfd)->debugInfoOffset = bfd_tell (abfd); | |
1881 | c = 0; | |
1882 | sym_ptr_ptr = bfd_get_outsymbols (abfd); | |
1883 | sym_end = sym_ptr_ptr + bfd_get_symcount (abfd); | |
1884 | for (; sym_ptr_ptr < sym_end; sym_ptr_ptr++) | |
b6e7553c | 1885 | { |
45a78ebb ILT |
1886 | asymbol *sym; |
1887 | bfd_byte type, len; | |
1888 | bfd_vma offset; | |
1889 | bfd_byte temp[NLM_TARGET_LONG_SIZE]; | |
1890 | ||
1891 | sym = *sym_ptr_ptr; | |
1892 | ||
1893 | /* The NLM notion of a debugging symbol is actually what | |
1894 | BFD calls a local or global symbol. What BFD calls a | |
1895 | debugging symbol NLM does not understand at all. */ | |
1896 | if ((sym->flags & (BSF_LOCAL | BSF_GLOBAL | BSF_EXPORT)) == 0 | |
1897 | || (sym->flags & BSF_DEBUGGING) != 0 | |
1898 | || bfd_get_section (sym) == &bfd_und_section) | |
1899 | continue; | |
1900 | ||
1901 | ++c; | |
1902 | ||
9783e04a | 1903 | offset = bfd_asymbol_value (sym); |
45a78ebb ILT |
1904 | sec = sym->section; |
1905 | if (sec->flags & SEC_CODE) | |
1906 | { | |
9783e04a DM |
1907 | offset -= nlm_get_text_low (abfd); |
1908 | type = 1; | |
1909 | } | |
1910 | else if (sec->flags & (SEC_DATA | SEC_ALLOC)) | |
1911 | { | |
1912 | /* SEC_ALLOC is for the .bss section. */ | |
1913 | offset -= nlm_get_data_low (abfd); | |
45a78ebb ILT |
1914 | type = 0; |
1915 | } | |
1916 | else | |
1917 | type = 2; | |
b6e7553c | 1918 | |
45a78ebb ILT |
1919 | /* The type is 0 for data, 1 for code, 2 for absolute. */ |
1920 | if (bfd_write (&type, sizeof (bfd_byte), 1, abfd) | |
1921 | != sizeof (bfd_byte)) | |
4002f18a | 1922 | goto error_return; |
b6e7553c | 1923 | |
45a78ebb ILT |
1924 | put_word (abfd, offset, temp); |
1925 | if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp)) | |
4002f18a | 1926 | goto error_return; |
b6e7553c | 1927 | |
45a78ebb ILT |
1928 | len = strlen (sym->name); |
1929 | if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) | |
1930 | != sizeof (bfd_byte)) | |
1931 | || bfd_write (sym->name, len, 1, abfd) != len) | |
4002f18a | 1932 | goto error_return; |
326e32d7 | 1933 | } |
45a78ebb ILT |
1934 | nlm_fixed_header (abfd)->numberOfDebugRecords = c; |
1935 | } | |
b6e7553c FF |
1936 | } |
1937 | ||
45a78ebb ILT |
1938 | /* NLMLINK fills in offset values even if there is no data, so we do |
1939 | the same. */ | |
1940 | last = bfd_tell (abfd); | |
1941 | if (nlm_fixed_header (abfd)->codeImageOffset == 0) | |
1942 | nlm_fixed_header (abfd)->codeImageOffset = last; | |
1943 | if (nlm_fixed_header (abfd)->dataImageOffset == 0) | |
1944 | nlm_fixed_header (abfd)->dataImageOffset = last; | |
1945 | if (nlm_fixed_header (abfd)->customDataOffset == 0) | |
1946 | nlm_fixed_header (abfd)->customDataOffset = last; | |
1947 | if (nlm_fixed_header (abfd)->moduleDependencyOffset == 0) | |
1948 | nlm_fixed_header (abfd)->moduleDependencyOffset = last; | |
1949 | if (nlm_fixed_header (abfd)->relocationFixupOffset == 0) | |
1950 | nlm_fixed_header (abfd)->relocationFixupOffset = last; | |
1951 | if (nlm_fixed_header (abfd)->externalReferencesOffset == 0) | |
1952 | nlm_fixed_header (abfd)->externalReferencesOffset = last; | |
1953 | if (nlm_fixed_header (abfd)->publicsOffset == 0) | |
1954 | nlm_fixed_header (abfd)->publicsOffset = last; | |
1955 | if (nlm_fixed_header (abfd)->debugInfoOffset == 0) | |
1956 | nlm_fixed_header (abfd)->debugInfoOffset = last; | |
1957 | ||
b6e7553c FF |
1958 | /* At this point everything has been written out except the fixed |
1959 | header. */ | |
cdbfad1c | 1960 | memcpy (nlm_fixed_header (abfd)->signature, nlm_signature (abfd), |
b6e7553c FF |
1961 | NLM_SIGNATURE_SIZE); |
1962 | nlm_fixed_header (abfd)->version = NLM_HEADER_VERSION; | |
1963 | nlm_fixed_header (abfd)->codeStartOffset = | |
45a78ebb ILT |
1964 | (bfd_get_start_address (abfd) |
1965 | - nlm_get_text_low (abfd)); | |
b6e7553c FF |
1966 | |
1967 | /* We have no convenient way for the caller to pass in the exit | |
1968 | procedure or the check unload procedure, so the caller must set | |
1969 | the values in the header to the values of the symbols. */ | |
45a78ebb | 1970 | nlm_fixed_header (abfd)->exitProcedureOffset -= nlm_get_text_low (abfd); |
b6e7553c FF |
1971 | if (nlm_fixed_header (abfd)->checkUnloadProcedureOffset != 0) |
1972 | nlm_fixed_header (abfd)->checkUnloadProcedureOffset -= | |
1973 | nlm_get_text_low (abfd); | |
1974 | ||
cdbfad1c | 1975 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) |
80425e6c | 1976 | goto error_return; |
326e32d7 | 1977 | |
cdbfad1c ILT |
1978 | write_prefix_func = nlm_write_prefix_func (abfd); |
1979 | if (write_prefix_func) | |
1980 | { | |
1981 | if ((*write_prefix_func) (abfd) == false) | |
80425e6c | 1982 | goto error_return; |
cdbfad1c ILT |
1983 | } |
1984 | ||
1985 | BFD_ASSERT (bfd_tell (abfd) == nlm_optional_prefix_size (abfd)); | |
1986 | ||
1987 | nlm_swap_fixed_header_out (abfd, nlm_fixed_header (abfd), fixed_header); | |
1988 | if (bfd_write (fixed_header, nlm_fixed_header_size (abfd), 1, abfd) | |
1989 | != nlm_fixed_header_size (abfd)) | |
4002f18a | 1990 | goto error_return; |
b6e7553c | 1991 | |
80425e6c JK |
1992 | if (fixed_header != NULL) |
1993 | free (fixed_header); | |
b6e7553c | 1994 | return true; |
80425e6c | 1995 | |
326e32d7 | 1996 | error_return: |
80425e6c JK |
1997 | if (fixed_header != NULL) |
1998 | free (fixed_header); | |
1999 | return false; | |
b6e7553c | 2000 | } |