Commit | Line | Data |
---|---|---|
6724ff46 RP |
1 | /* Object file "section" support for the BFD library. |
2 | Copyright (C) 1990-1991 Free Software Foundation, Inc. | |
3 | Written by Cygnus Support. | |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
4a96bc04 SC |
21 | /* |
22 | SECTION | |
23 | Sections | |
985fca12 | 24 | |
4a96bc04 SC |
25 | Sections are supported in BFD in <<section.c>>. |
26 | ||
27 | The raw data contained within a BFD is maintained through the | |
28 | section abstraction. A single BFD may have any number of | |
29 | sections, and keeps hold of them by pointing to the first, | |
30 | each one points to the next in the list. | |
985fca12 SC |
31 | |
32 | @menu | |
33 | * Section Input:: | |
34 | * Section Output:: | |
35 | * typedef asection:: | |
36 | * section prototypes:: | |
37 | @end menu | |
38 | ||
4a96bc04 SC |
39 | INODE |
40 | Section Input, Section Output, Sections, Sections | |
41 | ||
42 | SUBSECTION | |
43 | Section Input | |
44 | ||
45 | When a BFD is opened for reading, the section structures are | |
46 | created and attached to the BFD. | |
47 | ||
48 | Each section has a name which describes the section in the | |
49 | outside world - for example, <<a.out>> would contain at least | |
50 | three sections, called <<.text>>, <<.data>> and <<.bss>>. | |
51 | ||
52 | Sometimes a BFD will contain more than the 'natural' number of | |
53 | sections. A back end may attach other sections containing | |
54 | constructor data, or an application may add a section (using | |
55 | bfd_make_section) to the sections attached to an already open | |
56 | BFD. For example, the linker creates a supernumary section | |
57 | <<COMMON>> for each input file's BFD to hold information about | |
58 | common storage. | |
59 | ||
60 | The raw data is not necessarily read in at the same time as | |
61 | the section descriptor is created. Some targets may leave the | |
62 | data in place until a <<bfd_get_section_contents>> call is | |
63 | made. Other back ends may read in all the data at once - For | |
64 | example; an S-record file has to be read once to determine the | |
65 | size of the data. An IEEE-695 file doesn't contain raw data in | |
66 | sections, but data and relocation expressions intermixed, so | |
67 | the data area has to be parsed to get out the data and | |
68 | relocations. | |
69 | ||
70 | INODE | |
71 | Section Output, typedef asection, Section Input, Sections | |
72 | ||
73 | SUBSECTION | |
74 | Section Output | |
75 | ||
76 | To write a new object style BFD, the various sections to be | |
77 | written have to be created. They are attached to the BFD in | |
78 | the same way as input sections, data is written to the | |
79 | sections using <<bfd_set_section_contents>>. | |
80 | ||
81 | The linker uses the fields <<output_section>> and | |
82 | <<output_offset>> to create an output file. | |
83 | ||
84 | The data to be written comes from input sections attached to | |
85 | the output sections. The output section structure can be | |
86 | considered a filter for the input section, the output section | |
87 | determines the vma of the output data and the name, but the | |
88 | input section determines the offset into the output section of | |
89 | the data to be written. | |
90 | ||
91 | Eg to create a section "O", starting at 0x100, 0x123 long, | |
92 | containing two subsections, "A" at offset 0x0 (ie at vma | |
93 | 0x100) and "B" at offset 0x20 (ie at vma 0x120) the structures | |
94 | would look like: | |
95 | ||
96 | | section name "A" | |
97 | | output_offset 0x00 | |
98 | | size 0x20 | |
99 | | output_section -----------> section name "O" | |
100 | | | vma 0x100 | |
101 | | section name "B" | size 0x123 | |
102 | | output_offset 0x20 | | |
103 | | size 0x103 | | |
104 | | output_section --------| | |
105 | ||
985fca12 SC |
106 | |
107 | */ | |
108 | ||
109 | ||
985fca12 | 110 | #include "bfd.h" |
cbdc7909 | 111 | #include "sysdep.h" |
985fca12 SC |
112 | #include "libbfd.h" |
113 | ||
4a96bc04 SC |
114 | /* |
115 | INODE | |
116 | typedef asection, section prototypes, Section Output, Sections | |
117 | SUBSECTION | |
118 | typedef asection | |
119 | ||
120 | SUBSECTION | |
121 | typedef asection | |
122 | ||
123 | The shape of a section struct: | |
124 | ||
125 | CODE_FRAGMENT | |
126 | . | |
127 | .typedef struct sec | |
128 | .{ | |
129 | . {* The name of the section, the name isn't a copy, the pointer is | |
130 | . the same as that passed to bfd_make_section. *} | |
131 | . | |
132 | . CONST char *name; | |
133 | . | |
134 | . {* The next section in the list belonging to the BFD, or NULL. *} | |
135 | . | |
136 | . struct sec *next; | |
137 | . | |
138 | . {* The field flags contains attributes of the section. Some of | |
139 | . flags are read in from the object file, and some are | |
140 | . synthesized from other information. *} | |
141 | . | |
142 | . flagword flags; | |
143 | . | |
144 | .#define SEC_NO_FLAGS 0x000 | |
145 | . | |
146 | . {* Tells the OS to allocate space for this section when loaded. | |
147 | . This would clear for a section containing debug information | |
148 | . only. *} | |
149 | . | |
150 | . | |
151 | .#define SEC_ALLOC 0x001 | |
152 | . {* Tells the OS to load the section from the file when loading. | |
153 | . This would be clear for a .bss section *} | |
154 | . | |
155 | .#define SEC_LOAD 0x002 | |
156 | . {* The section contains data still to be relocated, so there will | |
157 | . be some relocation information too. *} | |
158 | . | |
159 | .#define SEC_RELOC 0x004 | |
160 | . | |
161 | . {* Obsolete ? *} | |
162 | . | |
163 | .#define SEC_BALIGN 0x008 | |
164 | . | |
165 | . {* A signal to the OS that the section contains read only | |
166 | . data. *} | |
167 | .#define SEC_READONLY 0x010 | |
168 | . | |
169 | . {* The section contains code only. *} | |
170 | . | |
171 | .#define SEC_CODE 0x020 | |
172 | . | |
173 | . {* The section contains data only. *} | |
174 | . | |
175 | .#define SEC_DATA 0x040 | |
176 | . | |
177 | . {* The section will reside in ROM. *} | |
178 | . | |
179 | .#define SEC_ROM 0x080 | |
180 | . | |
181 | . {* The section contains constructor information. This section | |
182 | . type is used by the linker to create lists of constructors and | |
183 | . destructors used by <<g++>>. When a back end sees a symbol | |
184 | . which should be used in a constructor list, it creates a new | |
185 | . section for the type of name (eg <<__CTOR_LIST__>>), attaches | |
186 | . the symbol to it and builds a relocation. To build the lists | |
187 | . of constructors, all the linker has to to is catenate all the | |
188 | . sections called <<__CTOR_LIST__>> and relocte the data | |
189 | . contained within - exactly the operations it would peform on | |
190 | . standard data. *} | |
191 | . | |
192 | .#define SEC_CONSTRUCTOR 0x100 | |
193 | . | |
194 | . {* The section is a constuctor, and should be placed at the | |
195 | . end of the . *} | |
196 | . | |
197 | . | |
198 | .#define SEC_CONSTRUCTOR_TEXT 0x1100 | |
199 | . | |
200 | .#define SEC_CONSTRUCTOR_DATA 0x2100 | |
201 | . | |
202 | .#define SEC_CONSTRUCTOR_BSS 0x3100 | |
203 | . | |
204 | . | |
205 | . {* The section has contents - a bss section could be | |
206 | . <<SEC_ALLOC>> | <<SEC_HAS_CONTENTS>>, a debug section could be | |
207 | . <<SEC_HAS_CONTENTS>> *} | |
208 | . | |
209 | .#define SEC_HAS_CONTENTS 0x200 | |
210 | . | |
211 | . {* An instruction to the linker not to output sections | |
212 | . containing this flag even if they have information which | |
213 | . would normally be written. *} | |
214 | . | |
215 | .#define SEC_NEVER_LOAD 0x400 | |
216 | . | |
217 | . {* The base address of the section in the address space of the | |
218 | . target. *} | |
219 | . | |
220 | . bfd_vma vma; | |
221 | . | |
222 | . {* The size of the section in bytes of the loaded section. This | |
223 | . contains a value even if the section has no contents (eg, the | |
224 | . size of <<.bss>>). *} | |
225 | . | |
226 | . bfd_size_type size; | |
227 | . | |
228 | . {* If this section is going to be output, then this value is the | |
229 | . offset into the output section of the first byte in the input | |
230 | . section. Eg, if this was going to start at the 100th byte in | |
231 | . the output section, this value would be 100. *} | |
232 | . | |
233 | . bfd_vma output_offset; | |
234 | . | |
235 | . {* The output section through which to map on output. *} | |
236 | . | |
237 | . struct sec *output_section; | |
238 | . | |
239 | . {* The alignment requirement of the section, as an exponent - eg | |
240 | . 3 aligns to 2^3 (or 8) *} | |
241 | . | |
242 | . unsigned int alignment_power; | |
243 | . | |
244 | . {* If an input section, a pointer to a vector of relocation | |
245 | . records for the data in this section. *} | |
246 | . | |
247 | . struct reloc_cache_entry *relocation; | |
248 | . | |
249 | . {* If an output section, a pointer to a vector of pointers to | |
250 | . relocation records for the data in this section. *} | |
251 | . | |
252 | . struct reloc_cache_entry **orelocation; | |
253 | . | |
254 | . {* The number of relocation records in one of the above *} | |
255 | . | |
256 | . unsigned reloc_count; | |
257 | . | |
258 | . {* Which section is it 0.nth *} | |
259 | . | |
260 | . int index; | |
261 | . | |
262 | . {* Information below is back end specific - and not always used | |
263 | . or updated | |
264 | . | |
265 | . File position of section data *} | |
266 | . | |
267 | . file_ptr filepos; | |
268 | . | |
269 | . {* File position of relocation info *} | |
270 | . | |
271 | . file_ptr rel_filepos; | |
272 | . | |
273 | . {* File position of line data *} | |
274 | . | |
275 | . file_ptr line_filepos; | |
276 | . | |
277 | . {* Pointer to data for applications *} | |
278 | . | |
279 | . PTR userdata; | |
280 | . | |
281 | . struct lang_output_section *otheruserdata; | |
282 | . | |
283 | . {* Attached line number information *} | |
284 | . | |
285 | . alent *lineno; | |
286 | . | |
287 | . {* Number of line number records *} | |
288 | . | |
289 | . unsigned int lineno_count; | |
290 | . | |
291 | . {* When a section is being output, this value changes as more | |
292 | . linenumbers are written out *} | |
293 | . | |
294 | . file_ptr moving_line_filepos; | |
295 | . | |
296 | . {* what the section number is in the target world *} | |
297 | . | |
298 | . unsigned int target_index; | |
299 | . | |
300 | . PTR used_by_bfd; | |
301 | . | |
302 | . {* If this is a constructor section then here is a list of the | |
303 | . relocations created to relocate items within it. *} | |
304 | . | |
305 | . struct relent_chain *constructor_chain; | |
306 | . | |
307 | . {* The BFD which owns the section. *} | |
308 | . | |
309 | . bfd *owner; | |
310 | . | |
311 | .} asection ; | |
985fca12 SC |
312 | */ |
313 | ||
4a96bc04 SC |
314 | /* |
315 | INODE | |
316 | section prototypes, , typedef asection, Sections | |
985fca12 | 317 | |
4a96bc04 SC |
318 | SUBSECTION |
319 | section prototypes | |
985fca12 | 320 | |
4a96bc04 SC |
321 | These are the functions exported by the section handling part of |
322 | <<libbfd>. | |
323 | */ | |
985fca12 | 324 | |
4a96bc04 SC |
325 | /* |
326 | FUNCTION | |
327 | bfd_get_section_by_name | |
985fca12 | 328 | |
4a96bc04 SC |
329 | SYNOPSIS |
330 | asection *bfd_get_section_by_name(bfd *abfd, CONST char *name); | |
985fca12 | 331 | |
4a96bc04 SC |
332 | DESCRIPTION |
333 | Runs through the provided @var{abfd} and returns the | |
334 | <<asection>> who's name matches that provided, otherwise NULL. | |
335 | @xref{Sections}, for more information. | |
985fca12 | 336 | |
4a96bc04 | 337 | */ |
985fca12 | 338 | |
4a96bc04 SC |
339 | asection * |
340 | DEFUN(bfd_get_section_by_name,(abfd, name), | |
341 | bfd *abfd AND | |
342 | CONST char *name) | |
343 | { | |
344 | asection *sect; | |
985fca12 | 345 | |
4a96bc04 SC |
346 | for (sect = abfd->sections; sect != NULL; sect = sect->next) |
347 | if (!strcmp (sect->name, name)) return sect; | |
348 | return NULL; | |
349 | } | |
985fca12 | 350 | |
985fca12 | 351 | |
4a96bc04 SC |
352 | /* |
353 | FUNCTION | |
354 | bfd_make_section_old_way | |
985fca12 | 355 | |
4a96bc04 SC |
356 | SYNOPSIS |
357 | asection *bfd_make_section_old_way(bfd *, CONST char *name); | |
985fca12 | 358 | |
4a96bc04 SC |
359 | DESCRIPTION |
360 | This function creates a new empty section called @var{name} | |
361 | and attaches it to the end of the chain of sections for the | |
362 | BFD supplied. An attempt to create a section with a name which | |
363 | is already in use, returns its pointer without changing the | |
364 | section chain. | |
985fca12 | 365 | |
4a96bc04 SC |
366 | It has the funny name since this is the way it used to be |
367 | before is was rewritten... | |
985fca12 | 368 | |
4a96bc04 SC |
369 | Possible errors are: |
370 | o invalid_operation | |
371 | If output has already started for this BFD. | |
372 | o no_memory | |
373 | If obstack alloc fails. | |
985fca12 SC |
374 | |
375 | */ | |
376 | ||
985fca12 | 377 | |
985fca12 | 378 | asection * |
4a96bc04 | 379 | DEFUN(bfd_make_section_old_way,(abfd, name), |
985fca12 | 380 | bfd *abfd AND |
4a96bc04 | 381 | CONST char * name) |
985fca12 | 382 | { |
4a96bc04 SC |
383 | asection *sec = bfd_get_section_by_name(abfd, name); |
384 | if (sec == (asection *)NULL) | |
385 | { | |
386 | sec = bfd_make_section(abfd, name); | |
387 | } | |
388 | return sec; | |
985fca12 SC |
389 | } |
390 | ||
391 | ||
4a96bc04 SC |
392 | /* |
393 | FUNCTION | |
394 | bfd_make_section | |
985fca12 | 395 | |
4a96bc04 SC |
396 | SYNOPSIS |
397 | asection * bfd_make_section(bfd *, CONST char *name); | |
985fca12 | 398 | |
4a96bc04 SC |
399 | DESCRIPTION |
400 | This function creates a new empty section called @var{name} | |
401 | and attaches it to the end of the chain of sections for the | |
402 | BFD supplied. An attempt to create a section with a name which | |
403 | is already in use, returns NULL without changing the section | |
404 | chain. | |
405 | ||
406 | Possible errors are: | |
407 | o invalid_operation - If output has already started for this BFD. | |
408 | o no_memory - If obstack alloc fails. | |
985fca12 SC |
409 | */ |
410 | ||
411 | ||
412 | ||
413 | sec_ptr | |
414 | DEFUN(bfd_make_section,(abfd, name), | |
415 | bfd *abfd AND | |
416 | CONST char * name) | |
417 | { | |
418 | asection *newsect; | |
419 | asection ** prev = &abfd->sections; | |
420 | asection * sect = abfd->sections; | |
421 | ||
422 | if (abfd->output_has_begun) { | |
423 | bfd_error = invalid_operation; | |
424 | return NULL; | |
425 | } | |
426 | ||
427 | while (sect) { | |
cbdc7909 | 428 | if (!strcmp(sect->name, name)) return NULL; |
985fca12 SC |
429 | prev = §->next; |
430 | sect = sect->next; | |
431 | } | |
432 | ||
433 | newsect = (asection *) bfd_zalloc(abfd, sizeof (asection)); | |
434 | if (newsect == NULL) { | |
435 | bfd_error = no_memory; | |
436 | return NULL; | |
437 | } | |
438 | ||
439 | newsect->name = name; | |
440 | newsect->index = abfd->section_count++; | |
441 | newsect->flags = SEC_NO_FLAGS; | |
442 | ||
443 | newsect->userdata = 0; | |
444 | newsect->next = (asection *)NULL; | |
445 | newsect->relocation = (arelent *)NULL; | |
446 | newsect->reloc_count = 0; | |
447 | newsect->line_filepos =0; | |
448 | newsect->owner = abfd; | |
449 | if (BFD_SEND (abfd, _new_section_hook, (abfd, newsect)) != true) { | |
450 | free (newsect); | |
451 | return NULL; | |
452 | } | |
453 | ||
454 | *prev = newsect; | |
455 | return newsect; | |
456 | } | |
457 | ||
458 | ||
4a96bc04 SC |
459 | /* |
460 | FUNCTION | |
461 | bfd_set_section_flags | |
462 | ||
463 | SYNOPSIS | |
464 | boolean bfd_set_section_flags(bfd *, asection *, flagword); | |
465 | ||
466 | DESCRIPTION | |
467 | Attempts to set the attributes of the section named in the BFD | |
468 | supplied to the value. Returns true on success, false on | |
469 | error. Possible error returns are: | |
470 | ||
471 | o invalid operation | |
472 | The section cannot have one or more of the attributes | |
473 | requested. For example, a .bss section in <<a.out>> may not | |
474 | have the <<SEC_HAS_CONTENTS>> field set. | |
985fca12 | 475 | |
985fca12 SC |
476 | */ |
477 | ||
478 | boolean | |
479 | DEFUN(bfd_set_section_flags,(abfd, section, flags), | |
480 | bfd *abfd AND | |
481 | sec_ptr section AND | |
482 | flagword flags) | |
483 | { | |
484 | if ((flags & bfd_applicable_section_flags (abfd)) != flags) { | |
485 | bfd_error = invalid_operation; | |
486 | return false; | |
487 | } | |
488 | ||
489 | section->flags = flags; | |
490 | return true; | |
491 | } | |
492 | ||
493 | ||
4a96bc04 SC |
494 | /* |
495 | FUNCTION | |
496 | bfd_map_over_sections | |
497 | ||
498 | SYNOPSIS | |
499 | void bfd_map_over_sections(bfd *abfd, void (*func)(), PTR obj); | |
985fca12 | 500 | |
4a96bc04 SC |
501 | DESCRIPTION |
502 | Calls the provided function @var{func} for each section | |
503 | attached to the BFD @var{abfd}, passing @var{obj} as an | |
504 | argument. The function will be called as if by | |
985fca12 | 505 | |
4a96bc04 | 506 | | func(abfd, the_section, obj); |
985fca12 | 507 | |
4a96bc04 SC |
508 | This is the prefered method for iterating over sections, an |
509 | alternative would be to use a loop: | |
510 | ||
511 | | section *p; | |
512 | | for (p = abfd->sections; p != NULL; p = p->next) | |
513 | | func(abfd, p, ...) | |
985fca12 | 514 | |
985fca12 | 515 | |
985fca12 SC |
516 | */ |
517 | ||
518 | /*VARARGS2*/ | |
519 | void | |
520 | DEFUN(bfd_map_over_sections,(abfd, operation, user_storage), | |
521 | bfd *abfd AND | |
522 | void (*operation)() AND | |
523 | PTR user_storage) | |
524 | { | |
525 | asection *sect; | |
526 | int i = 0; | |
527 | ||
528 | for (sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
529 | (*operation) (abfd, sect, user_storage); | |
530 | ||
531 | if (i != abfd->section_count) /* Debugging */ | |
532 | abort(); | |
533 | } | |
534 | ||
535 | ||
4a96bc04 SC |
536 | /* |
537 | FUNCTION | |
538 | bfd_set_section_size | |
539 | ||
540 | SYNOPSIS | |
541 | boolean bfd_set_section_size(bfd *, asection *, bfd_size_type val); | |
985fca12 | 542 | |
4a96bc04 SC |
543 | DESCRIPTION |
544 | Sets @var{section} to the size @var{val}. If the operation is | |
545 | ok, then <<true>> is returned, else <<false>>. | |
546 | ||
547 | Possible error returns: | |
548 | o invalid_operation | |
549 | Writing has started to the BFD, so setting the size is invalid | |
985fca12 | 550 | |
985fca12 SC |
551 | */ |
552 | ||
553 | boolean | |
554 | DEFUN(bfd_set_section_size,(abfd, ptr, val), | |
555 | bfd *abfd AND | |
556 | sec_ptr ptr AND | |
6724ff46 | 557 | bfd_size_type val) |
985fca12 SC |
558 | { |
559 | /* Once you've started writing to any section you cannot create or change | |
560 | the size of any others. */ | |
561 | ||
562 | if (abfd->output_has_begun) { | |
563 | bfd_error = invalid_operation; | |
564 | return false; | |
565 | } | |
566 | ||
567 | ptr->size = val; | |
568 | ||
569 | return true; | |
570 | } | |
571 | ||
4a96bc04 SC |
572 | /* |
573 | FUNCTION | |
574 | bfd_set_section_contents | |
575 | ||
576 | SYNOPSIS | |
577 | boolean bfd_set_section_contents | |
985fca12 SC |
578 | (bfd *abfd, |
579 | asection *section, | |
580 | PTR data, | |
581 | file_ptr offset, | |
4a96bc04 SC |
582 | bfd_size_type count); |
583 | ||
584 | ||
585 | DESCRIPTION | |
586 | Sets the contents of the section @var{section} in BFD | |
587 | @var{abfd} to the data starting in memory at @var{data}. The | |
588 | data is written to the output section starting at offset | |
589 | @var{offset} for @var{count} bytes. | |
590 | ||
591 | Normally <<true>> is returned, else <<false>>. Possible error | |
592 | returns are: | |
593 | o no_contents | |
594 | The output section does not have the <<SEC_HAS_CONTENTS>> | |
595 | attribute, so nothing can be written to it. | |
596 | o and some more too | |
597 | ||
598 | This routine is front end to the back end function | |
599 | <<_bfd_set_section_contents>>. | |
600 | ||
985fca12 SC |
601 | |
602 | */ | |
603 | ||
604 | boolean | |
605 | DEFUN(bfd_set_section_contents,(abfd, section, location, offset, count), | |
606 | bfd *abfd AND | |
607 | sec_ptr section AND | |
608 | PTR location AND | |
609 | file_ptr offset AND | |
610 | bfd_size_type count) | |
611 | { | |
612 | if (!(bfd_get_section_flags(abfd, section) & SEC_HAS_CONTENTS)) | |
613 | { | |
614 | bfd_error = no_contents; | |
615 | return(false); | |
616 | } | |
617 | ||
618 | if (BFD_SEND (abfd, _bfd_set_section_contents, | |
619 | (abfd, section, location, offset, count))) | |
620 | { | |
621 | abfd->output_has_begun = true; | |
622 | return true; | |
623 | } | |
624 | ||
625 | return false; | |
626 | } | |
627 | ||
4a96bc04 SC |
628 | /* |
629 | FUNCTION | |
630 | bfd_get_section_contents | |
985fca12 | 631 | |
4a96bc04 SC |
632 | SYNOPSIS |
633 | boolean bfd_get_section_contents | |
634 | (bfd *abfd, asection *section, PTR location, | |
635 | file_ptr offset, bfd_size_type count); | |
985fca12 | 636 | |
4a96bc04 SC |
637 | DESCRIPTION |
638 | This function reads data from @var{section} in BFD @var{abfd} | |
639 | into memory starting at @var{location}. The data is read at an | |
640 | offset of @var{offset} from the start of the input section, | |
641 | and is read for @var{count} bytes. | |
985fca12 | 642 | |
4a96bc04 SC |
643 | If the contents of a constuctor with the <<SEC_CONSTUCTOR>> |
644 | flag set are requested, then the @var{location} is filled with | |
645 | zeroes. If no errors occur, <<true>> is returned, else | |
646 | <<false>>. | |
985fca12 | 647 | |
985fca12 SC |
648 | |
649 | ||
650 | */ | |
651 | boolean | |
652 | DEFUN(bfd_get_section_contents,(abfd, section, location, offset, count), | |
653 | bfd *abfd AND | |
654 | sec_ptr section AND | |
655 | PTR location AND | |
656 | file_ptr offset AND | |
657 | bfd_size_type count) | |
658 | { | |
659 | if (section->flags & SEC_CONSTRUCTOR) | |
660 | { | |
661 | memset(location, 0, (unsigned)count); | |
662 | return true; | |
663 | } | |
664 | else | |
665 | { | |
666 | return (BFD_SEND (abfd, _bfd_get_section_contents, | |
667 | (abfd, section, location, offset, count))); | |
668 | } | |
669 | } | |
670 |