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252b5132 | 1 | /* Assorted BFD support routines, only used internally. |
219d1afa | 2 | Copyright (C) 1990-2018 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Cygnus Support. |
4 | ||
ca09e32b | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
ca09e32b NC |
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 | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
ca09e32b | 10 | (at your option) any later version. |
252b5132 | 11 | |
ca09e32b NC |
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. | |
252b5132 | 16 | |
ca09e32b NC |
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 | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
252b5132 RH |
24 | #include "libbfd.h" |
25 | ||
26 | #ifndef HAVE_GETPAGESIZE | |
27 | #define getpagesize() 2048 | |
28 | #endif | |
29 | ||
252b5132 RH |
30 | /* |
31 | SECTION | |
1b74d094 BW |
32 | Implementation details |
33 | ||
34 | SUBSECTION | |
252b5132 RH |
35 | Internal functions |
36 | ||
37 | DESCRIPTION | |
38 | These routines are used within BFD. | |
39 | They are not intended for export, but are documented here for | |
40 | completeness. | |
41 | */ | |
42 | ||
43 | /* A routine which is used in target vectors for unsupported | |
44 | operations. */ | |
45 | ||
b34976b6 | 46 | bfd_boolean |
c58b9523 | 47 | bfd_false (bfd *ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
48 | { |
49 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 50 | return FALSE; |
252b5132 RH |
51 | } |
52 | ||
53 | /* A routine which is used in target vectors for supported operations | |
54 | which do not actually do anything. */ | |
55 | ||
b34976b6 | 56 | bfd_boolean |
c58b9523 | 57 | bfd_true (bfd *ignore ATTRIBUTE_UNUSED) |
252b5132 | 58 | { |
b34976b6 | 59 | return TRUE; |
252b5132 RH |
60 | } |
61 | ||
62 | /* A routine which is used in target vectors for unsupported | |
63 | operations which return a pointer value. */ | |
64 | ||
c58b9523 AM |
65 | void * |
66 | bfd_nullvoidptr (bfd *ignore ATTRIBUTE_UNUSED) | |
252b5132 RH |
67 | { |
68 | bfd_set_error (bfd_error_invalid_operation); | |
69 | return NULL; | |
70 | } | |
71 | ||
509945ae | 72 | int |
c58b9523 | 73 | bfd_0 (bfd *ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
74 | { |
75 | return 0; | |
76 | } | |
77 | ||
509945ae | 78 | unsigned int |
c58b9523 | 79 | bfd_0u (bfd *ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
80 | { |
81 | return 0; | |
82 | } | |
83 | ||
252b5132 | 84 | long |
c58b9523 | 85 | bfd_0l (bfd *ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
86 | { |
87 | return 0; | |
88 | } | |
89 | ||
90 | /* A routine which is used in target vectors for unsupported | |
91 | operations which return -1 on error. */ | |
92 | ||
252b5132 | 93 | long |
c58b9523 | 94 | _bfd_n1 (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
252b5132 RH |
95 | { |
96 | bfd_set_error (bfd_error_invalid_operation); | |
97 | return -1; | |
98 | } | |
99 | ||
509945ae | 100 | void |
c58b9523 | 101 | bfd_void (bfd *ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
102 | { |
103 | } | |
104 | ||
72f6ea61 AM |
105 | long |
106 | _bfd_norelocs_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, | |
107 | asection *sec ATTRIBUTE_UNUSED) | |
108 | { | |
109 | return sizeof (arelent *); | |
110 | } | |
111 | ||
112 | long | |
113 | _bfd_norelocs_canonicalize_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
114 | asection *sec ATTRIBUTE_UNUSED, | |
115 | arelent **relptr, | |
116 | asymbol **symbols ATTRIBUTE_UNUSED) | |
117 | { | |
118 | *relptr = NULL; | |
119 | return 0; | |
120 | } | |
121 | ||
23186865 JM |
122 | void |
123 | _bfd_norelocs_set_reloc (bfd *abfd ATTRIBUTE_UNUSED, | |
07d6d2b8 AM |
124 | asection *sec ATTRIBUTE_UNUSED, |
125 | arelent **relptr ATTRIBUTE_UNUSED, | |
126 | unsigned int count ATTRIBUTE_UNUSED) | |
23186865 JM |
127 | { |
128 | /* Do nothing. */ | |
129 | } | |
130 | ||
b34976b6 | 131 | bfd_boolean |
c58b9523 AM |
132 | _bfd_nocore_core_file_matches_executable_p |
133 | (bfd *ignore_core_bfd ATTRIBUTE_UNUSED, | |
134 | bfd *ignore_exec_bfd ATTRIBUTE_UNUSED) | |
252b5132 RH |
135 | { |
136 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 137 | return FALSE; |
252b5132 RH |
138 | } |
139 | ||
140 | /* Routine to handle core_file_failing_command entry point for targets | |
141 | without core file support. */ | |
142 | ||
252b5132 | 143 | char * |
c58b9523 | 144 | _bfd_nocore_core_file_failing_command (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
252b5132 RH |
145 | { |
146 | bfd_set_error (bfd_error_invalid_operation); | |
c58b9523 | 147 | return NULL; |
252b5132 RH |
148 | } |
149 | ||
150 | /* Routine to handle core_file_failing_signal entry point for targets | |
151 | without core file support. */ | |
152 | ||
252b5132 | 153 | int |
c58b9523 | 154 | _bfd_nocore_core_file_failing_signal (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
252b5132 RH |
155 | { |
156 | bfd_set_error (bfd_error_invalid_operation); | |
157 | return 0; | |
158 | } | |
159 | ||
261b8d08 PA |
160 | /* Routine to handle the core_file_pid entry point for targets without |
161 | core file support. */ | |
162 | ||
163 | int | |
164 | _bfd_nocore_core_file_pid (bfd *ignore_abfd ATTRIBUTE_UNUSED) | |
165 | { | |
166 | bfd_set_error (bfd_error_invalid_operation); | |
167 | return 0; | |
168 | } | |
169 | ||
252b5132 | 170 | const bfd_target * |
c58b9523 | 171 | _bfd_dummy_target (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
252b5132 RH |
172 | { |
173 | bfd_set_error (bfd_error_wrong_format); | |
174 | return 0; | |
175 | } | |
176 | \f | |
177 | /* Allocate memory using malloc. */ | |
178 | ||
c58b9523 AM |
179 | void * |
180 | bfd_malloc (bfd_size_type size) | |
252b5132 | 181 | { |
c58b9523 | 182 | void *ptr; |
db6b071a | 183 | size_t sz = (size_t) size; |
252b5132 | 184 | |
db6b071a NC |
185 | if (size != sz |
186 | /* This is to pacify memory checkers like valgrind. */ | |
187 | || ((signed long) sz) < 0) | |
dc810e39 AM |
188 | { |
189 | bfd_set_error (bfd_error_no_memory); | |
190 | return NULL; | |
191 | } | |
192 | ||
db6b071a NC |
193 | ptr = malloc (sz); |
194 | if (ptr == NULL && sz != 0) | |
252b5132 | 195 | bfd_set_error (bfd_error_no_memory); |
dc810e39 | 196 | |
252b5132 RH |
197 | return ptr; |
198 | } | |
199 | ||
d0fb9a8d JJ |
200 | /* Allocate memory using malloc, nmemb * size with overflow checking. */ |
201 | ||
202 | void * | |
203 | bfd_malloc2 (bfd_size_type nmemb, bfd_size_type size) | |
204 | { | |
d0fb9a8d JJ |
205 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE |
206 | && size != 0 | |
207 | && nmemb > ~(bfd_size_type) 0 / size) | |
208 | { | |
209 | bfd_set_error (bfd_error_no_memory); | |
210 | return NULL; | |
211 | } | |
212 | ||
db6b071a | 213 | return bfd_malloc (size * nmemb); |
d0fb9a8d JJ |
214 | } |
215 | ||
252b5132 RH |
216 | /* Reallocate memory using realloc. */ |
217 | ||
c58b9523 AM |
218 | void * |
219 | bfd_realloc (void *ptr, bfd_size_type size) | |
252b5132 | 220 | { |
c58b9523 | 221 | void *ret; |
db6b071a | 222 | size_t sz = (size_t) size; |
252b5132 | 223 | |
db6b071a NC |
224 | if (ptr == NULL) |
225 | return bfd_malloc (size); | |
226 | ||
227 | if (size != sz | |
228 | /* This is to pacify memory checkers like valgrind. */ | |
229 | || ((signed long) sz) < 0) | |
dc810e39 AM |
230 | { |
231 | bfd_set_error (bfd_error_no_memory); | |
232 | return NULL; | |
233 | } | |
234 | ||
db6b071a | 235 | ret = realloc (ptr, sz); |
252b5132 | 236 | |
db6b071a | 237 | if (ret == NULL && sz != 0) |
252b5132 RH |
238 | bfd_set_error (bfd_error_no_memory); |
239 | ||
240 | return ret; | |
241 | } | |
242 | ||
d0fb9a8d JJ |
243 | /* Reallocate memory using realloc, nmemb * size with overflow checking. */ |
244 | ||
245 | void * | |
246 | bfd_realloc2 (void *ptr, bfd_size_type nmemb, bfd_size_type size) | |
247 | { | |
d0fb9a8d JJ |
248 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE |
249 | && size != 0 | |
250 | && nmemb > ~(bfd_size_type) 0 / size) | |
251 | { | |
252 | bfd_set_error (bfd_error_no_memory); | |
253 | return NULL; | |
254 | } | |
255 | ||
db6b071a | 256 | return bfd_realloc (ptr, size * nmemb); |
d0fb9a8d JJ |
257 | } |
258 | ||
515ef31d NC |
259 | /* Reallocate memory using realloc. |
260 | If this fails the pointer is freed before returning. */ | |
261 | ||
262 | void * | |
263 | bfd_realloc_or_free (void *ptr, bfd_size_type size) | |
264 | { | |
db6b071a | 265 | void *ret = bfd_realloc (ptr, size); |
515ef31d | 266 | |
db6b071a NC |
267 | if (ret == NULL && ptr != NULL) |
268 | free (ptr); | |
515ef31d NC |
269 | |
270 | return ret; | |
271 | } | |
272 | ||
252b5132 RH |
273 | /* Allocate memory using malloc and clear it. */ |
274 | ||
c58b9523 AM |
275 | void * |
276 | bfd_zmalloc (bfd_size_type size) | |
252b5132 | 277 | { |
db6b071a | 278 | void *ptr = bfd_malloc (size); |
252b5132 | 279 | |
db6b071a NC |
280 | if (ptr != NULL && size > 0) |
281 | memset (ptr, 0, (size_t) size); | |
252b5132 RH |
282 | |
283 | return ptr; | |
284 | } | |
d0fb9a8d JJ |
285 | |
286 | /* Allocate memory using malloc (nmemb * size) with overflow checking | |
287 | and clear it. */ | |
288 | ||
289 | void * | |
290 | bfd_zmalloc2 (bfd_size_type nmemb, bfd_size_type size) | |
291 | { | |
db6b071a | 292 | void *ptr = bfd_malloc2 (nmemb, size); |
d0fb9a8d | 293 | |
db6b071a | 294 | if (ptr != NULL) |
d0fb9a8d | 295 | { |
db6b071a | 296 | size_t sz = nmemb * size; |
d0fb9a8d | 297 | |
db6b071a NC |
298 | if (sz > 0) |
299 | memset (ptr, 0, sz); | |
d0fb9a8d JJ |
300 | } |
301 | ||
302 | return ptr; | |
303 | } | |
304 | ||
252b5132 RH |
305 | /* |
306 | INTERNAL_FUNCTION | |
307 | bfd_write_bigendian_4byte_int | |
308 | ||
309 | SYNOPSIS | |
b34976b6 | 310 | bfd_boolean bfd_write_bigendian_4byte_int (bfd *, unsigned int); |
252b5132 RH |
311 | |
312 | DESCRIPTION | |
313 | Write a 4 byte integer @var{i} to the output BFD @var{abfd}, in big | |
314 | endian order regardless of what else is going on. This is useful in | |
315 | archives. | |
316 | ||
317 | */ | |
b34976b6 | 318 | bfd_boolean |
c58b9523 | 319 | bfd_write_bigendian_4byte_int (bfd *abfd, unsigned int i) |
252b5132 RH |
320 | { |
321 | bfd_byte buffer[4]; | |
dc810e39 | 322 | bfd_putb32 ((bfd_vma) i, buffer); |
c58b9523 | 323 | return bfd_bwrite (buffer, (bfd_size_type) 4, abfd) == 4; |
252b5132 RH |
324 | } |
325 | ||
252b5132 RH |
326 | \f |
327 | /** The do-it-yourself (byte) sex-change kit */ | |
328 | ||
329 | /* The middle letter e.g. get<b>short indicates Big or Little endian | |
330 | target machine. It doesn't matter what the byte order of the host | |
331 | machine is; these routines work for either. */ | |
332 | ||
333 | /* FIXME: Should these take a count argument? | |
334 | Answer (gnu@cygnus.com): No, but perhaps they should be inline | |
07d6d2b8 AM |
335 | functions in swap.h #ifdef __GNUC__. |
336 | Gprof them later and find out. */ | |
252b5132 RH |
337 | |
338 | /* | |
339 | FUNCTION | |
340 | bfd_put_size | |
341 | FUNCTION | |
342 | bfd_get_size | |
343 | ||
344 | DESCRIPTION | |
345 | These macros as used for reading and writing raw data in | |
346 | sections; each access (except for bytes) is vectored through | |
347 | the target format of the BFD and mangled accordingly. The | |
348 | mangling performs any necessary endian translations and | |
349 | removes alignment restrictions. Note that types accepted and | |
350 | returned by these macros are identical so they can be swapped | |
351 | around in macros---for example, @file{libaout.h} defines <<GET_WORD>> | |
352 | to either <<bfd_get_32>> or <<bfd_get_64>>. | |
353 | ||
354 | In the put routines, @var{val} must be a <<bfd_vma>>. If we are on a | |
355 | system without prototypes, the caller is responsible for making | |
356 | sure that is true, with a cast if necessary. We don't cast | |
357 | them in the macro definitions because that would prevent <<lint>> | |
358 | or <<gcc -Wall>> from detecting sins such as passing a pointer. | |
359 | To detect calling these with less than a <<bfd_vma>>, use | |
360 | <<gcc -Wconversion>> on a host with 64 bit <<bfd_vma>>'s. | |
361 | ||
362 | . | |
363 | .{* Byte swapping macros for user section data. *} | |
364 | . | |
365 | .#define bfd_put_8(abfd, val, ptr) \ | |
edeb6e24 | 366 | . ((void) (*((unsigned char *) (ptr)) = (val) & 0xff)) |
252b5132 | 367 | .#define bfd_put_signed_8 \ |
c58b9523 | 368 | . bfd_put_8 |
252b5132 | 369 | .#define bfd_get_8(abfd, ptr) \ |
70778fc7 | 370 | . (*(const unsigned char *) (ptr) & 0xff) |
252b5132 | 371 | .#define bfd_get_signed_8(abfd, ptr) \ |
70778fc7 | 372 | . (((*(const unsigned char *) (ptr) & 0xff) ^ 0x80) - 0x80) |
252b5132 RH |
373 | . |
374 | .#define bfd_put_16(abfd, val, ptr) \ | |
c58b9523 | 375 | . BFD_SEND (abfd, bfd_putx16, ((val),(ptr))) |
252b5132 | 376 | .#define bfd_put_signed_16 \ |
c58b9523 | 377 | . bfd_put_16 |
252b5132 | 378 | .#define bfd_get_16(abfd, ptr) \ |
c58b9523 | 379 | . BFD_SEND (abfd, bfd_getx16, (ptr)) |
252b5132 | 380 | .#define bfd_get_signed_16(abfd, ptr) \ |
c58b9523 | 381 | . BFD_SEND (abfd, bfd_getx_signed_16, (ptr)) |
252b5132 RH |
382 | . |
383 | .#define bfd_put_32(abfd, val, ptr) \ | |
c58b9523 | 384 | . BFD_SEND (abfd, bfd_putx32, ((val),(ptr))) |
252b5132 | 385 | .#define bfd_put_signed_32 \ |
c58b9523 | 386 | . bfd_put_32 |
252b5132 | 387 | .#define bfd_get_32(abfd, ptr) \ |
c58b9523 | 388 | . BFD_SEND (abfd, bfd_getx32, (ptr)) |
252b5132 | 389 | .#define bfd_get_signed_32(abfd, ptr) \ |
c58b9523 | 390 | . BFD_SEND (abfd, bfd_getx_signed_32, (ptr)) |
252b5132 RH |
391 | . |
392 | .#define bfd_put_64(abfd, val, ptr) \ | |
c58b9523 | 393 | . BFD_SEND (abfd, bfd_putx64, ((val), (ptr))) |
252b5132 | 394 | .#define bfd_put_signed_64 \ |
c58b9523 | 395 | . bfd_put_64 |
252b5132 | 396 | .#define bfd_get_64(abfd, ptr) \ |
c58b9523 | 397 | . BFD_SEND (abfd, bfd_getx64, (ptr)) |
252b5132 | 398 | .#define bfd_get_signed_64(abfd, ptr) \ |
c58b9523 | 399 | . BFD_SEND (abfd, bfd_getx_signed_64, (ptr)) |
252b5132 | 400 | . |
c58b9523 AM |
401 | .#define bfd_get(bits, abfd, ptr) \ |
402 | . ((bits) == 8 ? (bfd_vma) bfd_get_8 (abfd, ptr) \ | |
403 | . : (bits) == 16 ? bfd_get_16 (abfd, ptr) \ | |
404 | . : (bits) == 32 ? bfd_get_32 (abfd, ptr) \ | |
405 | . : (bits) == 64 ? bfd_get_64 (abfd, ptr) \ | |
406 | . : (abort (), (bfd_vma) - 1)) | |
c7ac6ff8 | 407 | . |
c58b9523 AM |
408 | .#define bfd_put(bits, abfd, val, ptr) \ |
409 | . ((bits) == 8 ? bfd_put_8 (abfd, val, ptr) \ | |
07d6d2b8 AM |
410 | . : (bits) == 16 ? bfd_put_16 (abfd, val, ptr) \ |
411 | . : (bits) == 32 ? bfd_put_32 (abfd, val, ptr) \ | |
412 | . : (bits) == 64 ? bfd_put_64 (abfd, val, ptr) \ | |
c58b9523 | 413 | . : (abort (), (void) 0)) |
c7ac6ff8 | 414 | . |
509945ae | 415 | */ |
252b5132 RH |
416 | |
417 | /* | |
418 | FUNCTION | |
419 | bfd_h_put_size | |
420 | bfd_h_get_size | |
421 | ||
422 | DESCRIPTION | |
423 | These macros have the same function as their <<bfd_get_x>> | |
dc810e39 | 424 | brethren, except that they are used for removing information |
252b5132 RH |
425 | for the header records of object files. Believe it or not, |
426 | some object files keep their header records in big endian | |
427 | order and their data in little endian order. | |
428 | . | |
429 | .{* Byte swapping macros for file header data. *} | |
430 | . | |
431 | .#define bfd_h_put_8(abfd, val, ptr) \ | |
dc810e39 | 432 | . bfd_put_8 (abfd, val, ptr) |
252b5132 | 433 | .#define bfd_h_put_signed_8(abfd, val, ptr) \ |
dc810e39 | 434 | . bfd_put_8 (abfd, val, ptr) |
252b5132 | 435 | .#define bfd_h_get_8(abfd, ptr) \ |
dc810e39 | 436 | . bfd_get_8 (abfd, ptr) |
252b5132 | 437 | .#define bfd_h_get_signed_8(abfd, ptr) \ |
dc810e39 | 438 | . bfd_get_signed_8 (abfd, ptr) |
252b5132 RH |
439 | . |
440 | .#define bfd_h_put_16(abfd, val, ptr) \ | |
dc810e39 | 441 | . BFD_SEND (abfd, bfd_h_putx16, (val, ptr)) |
252b5132 | 442 | .#define bfd_h_put_signed_16 \ |
dc810e39 | 443 | . bfd_h_put_16 |
252b5132 | 444 | .#define bfd_h_get_16(abfd, ptr) \ |
dc810e39 | 445 | . BFD_SEND (abfd, bfd_h_getx16, (ptr)) |
252b5132 | 446 | .#define bfd_h_get_signed_16(abfd, ptr) \ |
dc810e39 | 447 | . BFD_SEND (abfd, bfd_h_getx_signed_16, (ptr)) |
252b5132 RH |
448 | . |
449 | .#define bfd_h_put_32(abfd, val, ptr) \ | |
dc810e39 | 450 | . BFD_SEND (abfd, bfd_h_putx32, (val, ptr)) |
252b5132 | 451 | .#define bfd_h_put_signed_32 \ |
dc810e39 | 452 | . bfd_h_put_32 |
252b5132 | 453 | .#define bfd_h_get_32(abfd, ptr) \ |
dc810e39 | 454 | . BFD_SEND (abfd, bfd_h_getx32, (ptr)) |
252b5132 | 455 | .#define bfd_h_get_signed_32(abfd, ptr) \ |
dc810e39 | 456 | . BFD_SEND (abfd, bfd_h_getx_signed_32, (ptr)) |
252b5132 RH |
457 | . |
458 | .#define bfd_h_put_64(abfd, val, ptr) \ | |
dc810e39 | 459 | . BFD_SEND (abfd, bfd_h_putx64, (val, ptr)) |
252b5132 | 460 | .#define bfd_h_put_signed_64 \ |
dc810e39 | 461 | . bfd_h_put_64 |
252b5132 | 462 | .#define bfd_h_get_64(abfd, ptr) \ |
dc810e39 | 463 | . BFD_SEND (abfd, bfd_h_getx64, (ptr)) |
252b5132 | 464 | .#define bfd_h_get_signed_64(abfd, ptr) \ |
dc810e39 | 465 | . BFD_SEND (abfd, bfd_h_getx_signed_64, (ptr)) |
252b5132 | 466 | . |
edeb6e24 | 467 | .{* Aliases for the above, which should eventually go away. *} |
dc810e39 | 468 | . |
edeb6e24 AM |
469 | .#define H_PUT_64 bfd_h_put_64 |
470 | .#define H_PUT_32 bfd_h_put_32 | |
471 | .#define H_PUT_16 bfd_h_put_16 | |
472 | .#define H_PUT_8 bfd_h_put_8 | |
473 | .#define H_PUT_S64 bfd_h_put_signed_64 | |
474 | .#define H_PUT_S32 bfd_h_put_signed_32 | |
475 | .#define H_PUT_S16 bfd_h_put_signed_16 | |
476 | .#define H_PUT_S8 bfd_h_put_signed_8 | |
477 | .#define H_GET_64 bfd_h_get_64 | |
478 | .#define H_GET_32 bfd_h_get_32 | |
479 | .#define H_GET_16 bfd_h_get_16 | |
480 | .#define H_GET_8 bfd_h_get_8 | |
481 | .#define H_GET_S64 bfd_h_get_signed_64 | |
482 | .#define H_GET_S32 bfd_h_get_signed_32 | |
483 | .#define H_GET_S16 bfd_h_get_signed_16 | |
484 | .#define H_GET_S8 bfd_h_get_signed_8 | |
dc810e39 AM |
485 | . |
486 | .*/ | |
252b5132 RH |
487 | |
488 | /* Sign extension to bfd_signed_vma. */ | |
65879393 AM |
489 | #define COERCE16(x) (((bfd_vma) (x) ^ 0x8000) - 0x8000) |
490 | #define COERCE32(x) (((bfd_vma) (x) ^ 0x80000000) - 0x80000000) | |
252b5132 | 491 | #define COERCE64(x) \ |
65879393 | 492 | (((bfd_uint64_t) (x) ^ ((bfd_uint64_t) 1 << 63)) - ((bfd_uint64_t) 1 << 63)) |
252b5132 RH |
493 | |
494 | bfd_vma | |
edeb6e24 | 495 | bfd_getb16 (const void *p) |
252b5132 | 496 | { |
a50b1753 | 497 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
498 | return (addr[0] << 8) | addr[1]; |
499 | } | |
500 | ||
501 | bfd_vma | |
edeb6e24 | 502 | bfd_getl16 (const void *p) |
252b5132 | 503 | { |
a50b1753 | 504 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
505 | return (addr[1] << 8) | addr[0]; |
506 | } | |
507 | ||
508 | bfd_signed_vma | |
edeb6e24 | 509 | bfd_getb_signed_16 (const void *p) |
252b5132 | 510 | { |
a50b1753 | 511 | const bfd_byte *addr = (const bfd_byte *) p; |
c58b9523 | 512 | return COERCE16 ((addr[0] << 8) | addr[1]); |
252b5132 RH |
513 | } |
514 | ||
515 | bfd_signed_vma | |
edeb6e24 | 516 | bfd_getl_signed_16 (const void *p) |
252b5132 | 517 | { |
a50b1753 | 518 | const bfd_byte *addr = (const bfd_byte *) p; |
c58b9523 | 519 | return COERCE16 ((addr[1] << 8) | addr[0]); |
252b5132 RH |
520 | } |
521 | ||
522 | void | |
edeb6e24 | 523 | bfd_putb16 (bfd_vma data, void *p) |
252b5132 | 524 | { |
a50b1753 | 525 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
526 | addr[0] = (data >> 8) & 0xff; |
527 | addr[1] = data & 0xff; | |
252b5132 RH |
528 | } |
529 | ||
530 | void | |
edeb6e24 | 531 | bfd_putl16 (bfd_vma data, void *p) |
252b5132 | 532 | { |
a50b1753 | 533 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
534 | addr[0] = data & 0xff; |
535 | addr[1] = (data >> 8) & 0xff; | |
252b5132 RH |
536 | } |
537 | ||
538 | bfd_vma | |
edeb6e24 | 539 | bfd_getb32 (const void *p) |
252b5132 | 540 | { |
a50b1753 | 541 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
542 | unsigned long v; |
543 | ||
544 | v = (unsigned long) addr[0] << 24; | |
545 | v |= (unsigned long) addr[1] << 16; | |
546 | v |= (unsigned long) addr[2] << 8; | |
547 | v |= (unsigned long) addr[3]; | |
c58b9523 | 548 | return v; |
252b5132 RH |
549 | } |
550 | ||
551 | bfd_vma | |
edeb6e24 | 552 | bfd_getl32 (const void *p) |
252b5132 | 553 | { |
a50b1753 | 554 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
555 | unsigned long v; |
556 | ||
557 | v = (unsigned long) addr[0]; | |
558 | v |= (unsigned long) addr[1] << 8; | |
559 | v |= (unsigned long) addr[2] << 16; | |
560 | v |= (unsigned long) addr[3] << 24; | |
c58b9523 | 561 | return v; |
252b5132 RH |
562 | } |
563 | ||
564 | bfd_signed_vma | |
edeb6e24 | 565 | bfd_getb_signed_32 (const void *p) |
252b5132 | 566 | { |
a50b1753 | 567 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
568 | unsigned long v; |
569 | ||
570 | v = (unsigned long) addr[0] << 24; | |
571 | v |= (unsigned long) addr[1] << 16; | |
572 | v |= (unsigned long) addr[2] << 8; | |
573 | v |= (unsigned long) addr[3]; | |
574 | return COERCE32 (v); | |
575 | } | |
576 | ||
577 | bfd_signed_vma | |
edeb6e24 | 578 | bfd_getl_signed_32 (const void *p) |
252b5132 | 579 | { |
a50b1753 | 580 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
581 | unsigned long v; |
582 | ||
583 | v = (unsigned long) addr[0]; | |
584 | v |= (unsigned long) addr[1] << 8; | |
585 | v |= (unsigned long) addr[2] << 16; | |
586 | v |= (unsigned long) addr[3] << 24; | |
587 | return COERCE32 (v); | |
588 | } | |
589 | ||
8ce8c090 | 590 | bfd_uint64_t |
edeb6e24 | 591 | bfd_getb64 (const void *p ATTRIBUTE_UNUSED) |
252b5132 | 592 | { |
8ce8c090 | 593 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 594 | const bfd_byte *addr = (const bfd_byte *) p; |
8ce8c090 | 595 | bfd_uint64_t v; |
c58b9523 AM |
596 | |
597 | v = addr[0]; v <<= 8; | |
598 | v |= addr[1]; v <<= 8; | |
599 | v |= addr[2]; v <<= 8; | |
600 | v |= addr[3]; v <<= 8; | |
601 | v |= addr[4]; v <<= 8; | |
602 | v |= addr[5]; v <<= 8; | |
603 | v |= addr[6]; v <<= 8; | |
604 | v |= addr[7]; | |
605 | ||
606 | return v; | |
252b5132 RH |
607 | #else |
608 | BFD_FAIL(); | |
609 | return 0; | |
610 | #endif | |
611 | } | |
612 | ||
8ce8c090 | 613 | bfd_uint64_t |
edeb6e24 | 614 | bfd_getl64 (const void *p ATTRIBUTE_UNUSED) |
252b5132 | 615 | { |
8ce8c090 | 616 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 617 | const bfd_byte *addr = (const bfd_byte *) p; |
8ce8c090 | 618 | bfd_uint64_t v; |
c58b9523 AM |
619 | |
620 | v = addr[7]; v <<= 8; | |
621 | v |= addr[6]; v <<= 8; | |
622 | v |= addr[5]; v <<= 8; | |
623 | v |= addr[4]; v <<= 8; | |
624 | v |= addr[3]; v <<= 8; | |
625 | v |= addr[2]; v <<= 8; | |
626 | v |= addr[1]; v <<= 8; | |
627 | v |= addr[0]; | |
628 | ||
629 | return v; | |
252b5132 RH |
630 | #else |
631 | BFD_FAIL(); | |
632 | return 0; | |
633 | #endif | |
634 | ||
635 | } | |
636 | ||
8ce8c090 | 637 | bfd_int64_t |
edeb6e24 | 638 | bfd_getb_signed_64 (const void *p ATTRIBUTE_UNUSED) |
252b5132 | 639 | { |
8ce8c090 | 640 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 641 | const bfd_byte *addr = (const bfd_byte *) p; |
8ce8c090 | 642 | bfd_uint64_t v; |
c58b9523 AM |
643 | |
644 | v = addr[0]; v <<= 8; | |
645 | v |= addr[1]; v <<= 8; | |
646 | v |= addr[2]; v <<= 8; | |
647 | v |= addr[3]; v <<= 8; | |
648 | v |= addr[4]; v <<= 8; | |
649 | v |= addr[5]; v <<= 8; | |
650 | v |= addr[6]; v <<= 8; | |
651 | v |= addr[7]; | |
652 | ||
653 | return COERCE64 (v); | |
252b5132 RH |
654 | #else |
655 | BFD_FAIL(); | |
656 | return 0; | |
657 | #endif | |
658 | } | |
659 | ||
8ce8c090 | 660 | bfd_int64_t |
edeb6e24 | 661 | bfd_getl_signed_64 (const void *p ATTRIBUTE_UNUSED) |
252b5132 | 662 | { |
8ce8c090 | 663 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 664 | const bfd_byte *addr = (const bfd_byte *) p; |
8ce8c090 | 665 | bfd_uint64_t v; |
c58b9523 AM |
666 | |
667 | v = addr[7]; v <<= 8; | |
668 | v |= addr[6]; v <<= 8; | |
669 | v |= addr[5]; v <<= 8; | |
670 | v |= addr[4]; v <<= 8; | |
671 | v |= addr[3]; v <<= 8; | |
672 | v |= addr[2]; v <<= 8; | |
673 | v |= addr[1]; v <<= 8; | |
674 | v |= addr[0]; | |
675 | ||
676 | return COERCE64 (v); | |
252b5132 RH |
677 | #else |
678 | BFD_FAIL(); | |
679 | return 0; | |
680 | #endif | |
681 | } | |
682 | ||
683 | void | |
edeb6e24 | 684 | bfd_putb32 (bfd_vma data, void *p) |
252b5132 | 685 | { |
a50b1753 | 686 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
687 | addr[0] = (data >> 24) & 0xff; |
688 | addr[1] = (data >> 16) & 0xff; | |
689 | addr[2] = (data >> 8) & 0xff; | |
690 | addr[3] = data & 0xff; | |
252b5132 RH |
691 | } |
692 | ||
693 | void | |
edeb6e24 | 694 | bfd_putl32 (bfd_vma data, void *p) |
252b5132 | 695 | { |
a50b1753 | 696 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
697 | addr[0] = data & 0xff; |
698 | addr[1] = (data >> 8) & 0xff; | |
699 | addr[2] = (data >> 16) & 0xff; | |
700 | addr[3] = (data >> 24) & 0xff; | |
252b5132 RH |
701 | } |
702 | ||
703 | void | |
8ce8c090 | 704 | bfd_putb64 (bfd_uint64_t data ATTRIBUTE_UNUSED, void *p ATTRIBUTE_UNUSED) |
252b5132 | 705 | { |
8ce8c090 | 706 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 707 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
708 | addr[0] = (data >> (7*8)) & 0xff; |
709 | addr[1] = (data >> (6*8)) & 0xff; | |
710 | addr[2] = (data >> (5*8)) & 0xff; | |
711 | addr[3] = (data >> (4*8)) & 0xff; | |
712 | addr[4] = (data >> (3*8)) & 0xff; | |
713 | addr[5] = (data >> (2*8)) & 0xff; | |
714 | addr[6] = (data >> (1*8)) & 0xff; | |
715 | addr[7] = (data >> (0*8)) & 0xff; | |
252b5132 RH |
716 | #else |
717 | BFD_FAIL(); | |
718 | #endif | |
719 | } | |
720 | ||
721 | void | |
8ce8c090 | 722 | bfd_putl64 (bfd_uint64_t data ATTRIBUTE_UNUSED, void *p ATTRIBUTE_UNUSED) |
252b5132 | 723 | { |
8ce8c090 | 724 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 725 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
726 | addr[7] = (data >> (7*8)) & 0xff; |
727 | addr[6] = (data >> (6*8)) & 0xff; | |
728 | addr[5] = (data >> (5*8)) & 0xff; | |
729 | addr[4] = (data >> (4*8)) & 0xff; | |
730 | addr[3] = (data >> (3*8)) & 0xff; | |
731 | addr[2] = (data >> (2*8)) & 0xff; | |
732 | addr[1] = (data >> (1*8)) & 0xff; | |
733 | addr[0] = (data >> (0*8)) & 0xff; | |
252b5132 RH |
734 | #else |
735 | BFD_FAIL(); | |
736 | #endif | |
737 | } | |
8c603c85 NC |
738 | |
739 | void | |
8ce8c090 | 740 | bfd_put_bits (bfd_uint64_t data, void *p, int bits, bfd_boolean big_p) |
8c603c85 | 741 | { |
a50b1753 | 742 | bfd_byte *addr = (bfd_byte *) p; |
8c603c85 NC |
743 | int i; |
744 | int bytes; | |
745 | ||
746 | if (bits % 8 != 0) | |
747 | abort (); | |
748 | ||
749 | bytes = bits / 8; | |
750 | for (i = 0; i < bytes; i++) | |
751 | { | |
91d6fa6a | 752 | int addr_index = big_p ? bytes - i - 1 : i; |
8c603c85 | 753 | |
91d6fa6a | 754 | addr[addr_index] = data & 0xff; |
8c603c85 NC |
755 | data >>= 8; |
756 | } | |
757 | } | |
758 | ||
8ce8c090 | 759 | bfd_uint64_t |
edeb6e24 | 760 | bfd_get_bits (const void *p, int bits, bfd_boolean big_p) |
8c603c85 | 761 | { |
a50b1753 | 762 | const bfd_byte *addr = (const bfd_byte *) p; |
8ce8c090 | 763 | bfd_uint64_t data; |
8c603c85 NC |
764 | int i; |
765 | int bytes; | |
766 | ||
767 | if (bits % 8 != 0) | |
768 | abort (); | |
769 | ||
770 | data = 0; | |
771 | bytes = bits / 8; | |
772 | for (i = 0; i < bytes; i++) | |
773 | { | |
91d6fa6a | 774 | int addr_index = big_p ? i : bytes - i - 1; |
509945ae | 775 | |
91d6fa6a | 776 | data = (data << 8) | addr[addr_index]; |
8c603c85 NC |
777 | } |
778 | ||
779 | return data; | |
780 | } | |
252b5132 RH |
781 | \f |
782 | /* Default implementation */ | |
783 | ||
b34976b6 | 784 | bfd_boolean |
c58b9523 AM |
785 | _bfd_generic_get_section_contents (bfd *abfd, |
786 | sec_ptr section, | |
787 | void *location, | |
788 | file_ptr offset, | |
789 | bfd_size_type count) | |
252b5132 | 790 | { |
eea6121a | 791 | bfd_size_type sz; |
0bff3f4b | 792 | if (count == 0) |
b34976b6 | 793 | return TRUE; |
0bff3f4b | 794 | |
4a114e3e L |
795 | if (section->compress_status != COMPRESS_SECTION_NONE) |
796 | { | |
4eca0228 | 797 | _bfd_error_handler |
695344c0 | 798 | /* xgettext:c-format */ |
4a114e3e L |
799 | (_("%B: unable to get decompressed section %A"), |
800 | abfd, section); | |
801 | bfd_set_error (bfd_error_invalid_operation); | |
802 | return FALSE; | |
803 | } | |
804 | ||
e57278ef AM |
805 | /* We do allow reading of a section after bfd_final_link has |
806 | written the contents out to disk. In that situation, rawsize is | |
807 | just a stale version of size, so ignore it. Otherwise we must be | |
808 | reading an input section, where rawsize, if different to size, | |
809 | is the on-disk size. */ | |
810 | if (abfd->direction != write_direction && section->rawsize != 0) | |
811 | sz = section->rawsize; | |
812 | else | |
813 | sz = section->size; | |
e62071b6 | 814 | if (offset + count < count |
0630b49c | 815 | || offset + count > sz |
328ce951 L |
816 | || (abfd->my_archive != NULL |
817 | && !bfd_is_thin_archive (abfd->my_archive) | |
818 | && ((ufile_ptr) section->filepos + offset + count | |
819 | > arelt_size (abfd)))) | |
0bff3f4b ILT |
820 | { |
821 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 822 | return FALSE; |
0bff3f4b ILT |
823 | } |
824 | ||
825 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 826 | || bfd_bread (location, count, abfd) != count) |
b34976b6 | 827 | return FALSE; |
0bff3f4b | 828 | |
b34976b6 | 829 | return TRUE; |
252b5132 RH |
830 | } |
831 | ||
b34976b6 | 832 | bfd_boolean |
c58b9523 AM |
833 | _bfd_generic_get_section_contents_in_window |
834 | (bfd *abfd ATTRIBUTE_UNUSED, | |
835 | sec_ptr section ATTRIBUTE_UNUSED, | |
836 | bfd_window *w ATTRIBUTE_UNUSED, | |
837 | file_ptr offset ATTRIBUTE_UNUSED, | |
838 | bfd_size_type count ATTRIBUTE_UNUSED) | |
252b5132 RH |
839 | { |
840 | #ifdef USE_MMAP | |
eea6121a AM |
841 | bfd_size_type sz; |
842 | ||
252b5132 | 843 | if (count == 0) |
b34976b6 | 844 | return TRUE; |
c58b9523 AM |
845 | if (abfd->xvec->_bfd_get_section_contents |
846 | != _bfd_generic_get_section_contents) | |
252b5132 RH |
847 | { |
848 | /* We don't know what changes the bfd's get_section_contents | |
849 | method may have to make. So punt trying to map the file | |
850 | window, and let get_section_contents do its thing. */ | |
851 | /* @@ FIXME : If the internal window has a refcount of 1 and was | |
852 | allocated with malloc instead of mmap, just reuse it. */ | |
853 | bfd_free_window (w); | |
c58b9523 | 854 | w->i = bfd_zmalloc (sizeof (bfd_window_internal)); |
252b5132 | 855 | if (w->i == NULL) |
b34976b6 | 856 | return FALSE; |
c58b9523 | 857 | w->i->data = bfd_malloc (count); |
252b5132 RH |
858 | if (w->i->data == NULL) |
859 | { | |
860 | free (w->i); | |
861 | w->i = NULL; | |
b34976b6 | 862 | return FALSE; |
252b5132 RH |
863 | } |
864 | w->i->mapped = 0; | |
865 | w->i->refcount = 1; | |
866 | w->size = w->i->size = count; | |
867 | w->data = w->i->data; | |
868 | return bfd_get_section_contents (abfd, section, w->data, offset, count); | |
869 | } | |
e57278ef AM |
870 | if (abfd->direction != write_direction && section->rawsize != 0) |
871 | sz = section->rawsize; | |
872 | else | |
873 | sz = section->size; | |
328ce951 L |
874 | if (offset + count < count |
875 | || offset + count > sz | |
876 | || (abfd->my_archive != NULL | |
877 | && !bfd_is_thin_archive (abfd->my_archive) | |
878 | && ((ufile_ptr) section->filepos + offset + count | |
879 | > arelt_size (abfd))) | |
82e51918 | 880 | || ! bfd_get_file_window (abfd, section->filepos + offset, count, w, |
b34976b6 AM |
881 | TRUE)) |
882 | return FALSE; | |
883 | return TRUE; | |
252b5132 RH |
884 | #else |
885 | abort (); | |
886 | #endif | |
887 | } | |
888 | ||
889 | /* This generic function can only be used in implementations where creating | |
890 | NEW sections is disallowed. It is useful in patching existing sections | |
891 | in read-write files, though. See other set_section_contents functions | |
892 | to see why it doesn't work for new sections. */ | |
b34976b6 | 893 | bfd_boolean |
c58b9523 AM |
894 | _bfd_generic_set_section_contents (bfd *abfd, |
895 | sec_ptr section, | |
0f867abe | 896 | const void *location, |
c58b9523 AM |
897 | file_ptr offset, |
898 | bfd_size_type count) | |
252b5132 RH |
899 | { |
900 | if (count == 0) | |
b34976b6 | 901 | return TRUE; |
252b5132 | 902 | |
dc810e39 AM |
903 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 |
904 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 905 | return FALSE; |
252b5132 | 906 | |
b34976b6 | 907 | return TRUE; |
252b5132 RH |
908 | } |
909 | ||
910 | /* | |
911 | INTERNAL_FUNCTION | |
912 | bfd_log2 | |
913 | ||
914 | SYNOPSIS | |
dc810e39 | 915 | unsigned int bfd_log2 (bfd_vma x); |
252b5132 RH |
916 | |
917 | DESCRIPTION | |
918 | Return the log base 2 of the value supplied, rounded up. E.g., an | |
dc810e39 | 919 | @var{x} of 1025 returns 11. A @var{x} of 0 returns 0. |
252b5132 RH |
920 | */ |
921 | ||
922 | unsigned int | |
c58b9523 | 923 | bfd_log2 (bfd_vma x) |
252b5132 RH |
924 | { |
925 | unsigned int result = 0; | |
926 | ||
9e6619e2 AM |
927 | if (x <= 1) |
928 | return result; | |
929 | --x; | |
930 | do | |
252b5132 | 931 | ++result; |
9e6619e2 | 932 | while ((x >>= 1) != 0); |
252b5132 RH |
933 | return result; |
934 | } | |
935 | ||
b34976b6 | 936 | bfd_boolean |
c58b9523 | 937 | bfd_generic_is_local_label_name (bfd *abfd, const char *name) |
252b5132 RH |
938 | { |
939 | char locals_prefix = (bfd_get_symbol_leading_char (abfd) == '_') ? 'L' : '.'; | |
940 | ||
b34976b6 | 941 | return name[0] == locals_prefix; |
252b5132 RH |
942 | } |
943 | ||
dc810e39 AM |
944 | /* Give a warning at runtime if someone compiles code which calls |
945 | old routines. */ | |
ca09e32b | 946 | |
dc810e39 | 947 | void |
8c8402cc PA |
948 | _bfd_warn_deprecated (const char *what, |
949 | const char *file, | |
950 | int line, | |
951 | const char *func) | |
dc810e39 AM |
952 | { |
953 | /* Poor man's tracking of functions we've already warned about. */ | |
954 | static size_t mask = 0; | |
955 | ||
956 | if (~(size_t) func & ~mask) | |
957 | { | |
4a97a0e5 | 958 | fflush (stdout); |
73722af0 | 959 | /* Note: separate sentences in order to allow |
ca09e32b | 960 | for translation into other languages. */ |
dc810e39 | 961 | if (func) |
695344c0 | 962 | /* xgettext:c-format */ |
ca09e32b NC |
963 | fprintf (stderr, _("Deprecated %s called at %s line %d in %s\n"), |
964 | what, file, line, func); | |
dc810e39 | 965 | else |
ca09e32b | 966 | fprintf (stderr, _("Deprecated %s called\n"), what); |
4a97a0e5 | 967 | fflush (stderr); |
dc810e39 AM |
968 | mask |= ~(size_t) func; |
969 | } | |
970 | } | |
c0c28ab8 L |
971 | |
972 | /* Helper function for reading uleb128 encoded data. */ | |
973 | ||
974 | bfd_vma | |
4265548c PA |
975 | _bfd_read_unsigned_leb128 (bfd *abfd ATTRIBUTE_UNUSED, |
976 | bfd_byte *buf, | |
977 | unsigned int *bytes_read_ptr) | |
c0c28ab8 L |
978 | { |
979 | bfd_vma result; | |
980 | unsigned int num_read; | |
f075ee0c | 981 | unsigned int shift; |
c0c28ab8 L |
982 | unsigned char byte; |
983 | ||
984 | result = 0; | |
985 | shift = 0; | |
986 | num_read = 0; | |
987 | do | |
988 | { | |
f075ee0c | 989 | byte = bfd_get_8 (abfd, buf); |
c0c28ab8 L |
990 | buf++; |
991 | num_read++; | |
992 | result |= (((bfd_vma) byte & 0x7f) << shift); | |
993 | shift += 7; | |
994 | } | |
995 | while (byte & 0x80); | |
996 | *bytes_read_ptr = num_read; | |
997 | return result; | |
998 | } | |
999 | ||
f64e188b NC |
1000 | /* Read in a LEB128 encoded value from ABFD starting at DATA. |
1001 | If SIGN is true, return a signed LEB128 value. | |
1002 | If LENGTH_RETURN is not NULL, return in it the number of bytes read. | |
1003 | No bytes will be read at address END or beyond. */ | |
1004 | ||
1005 | bfd_vma | |
4265548c PA |
1006 | _bfd_safe_read_leb128 (bfd *abfd ATTRIBUTE_UNUSED, |
1007 | bfd_byte *data, | |
1008 | unsigned int *length_return, | |
1009 | bfd_boolean sign, | |
1010 | const bfd_byte * const end) | |
f64e188b NC |
1011 | { |
1012 | bfd_vma result = 0; | |
1013 | unsigned int num_read = 0; | |
1014 | unsigned int shift = 0; | |
1015 | unsigned char byte = 0; | |
1016 | ||
1017 | while (data < end) | |
1018 | { | |
1019 | byte = bfd_get_8 (abfd, data); | |
1020 | data++; | |
1021 | num_read++; | |
1022 | ||
1023 | result |= ((bfd_vma) (byte & 0x7f)) << shift; | |
1024 | ||
1025 | shift += 7; | |
1026 | if ((byte & 0x80) == 0) | |
1027 | break; | |
1028 | } | |
1029 | ||
1030 | if (length_return != NULL) | |
1031 | *length_return = num_read; | |
1032 | ||
1033 | if (sign && (shift < 8 * sizeof (result)) && (byte & 0x40)) | |
29f628db | 1034 | result |= -((bfd_vma) 1 << shift); |
f64e188b NC |
1035 | |
1036 | return result; | |
1037 | } | |
1038 | ||
c0c28ab8 L |
1039 | /* Helper function for reading sleb128 encoded data. */ |
1040 | ||
1041 | bfd_signed_vma | |
4265548c PA |
1042 | _bfd_read_signed_leb128 (bfd *abfd ATTRIBUTE_UNUSED, |
1043 | bfd_byte *buf, | |
1044 | unsigned int *bytes_read_ptr) | |
c0c28ab8 L |
1045 | { |
1046 | bfd_vma result; | |
f075ee0c AM |
1047 | unsigned int shift; |
1048 | unsigned int num_read; | |
c0c28ab8 L |
1049 | unsigned char byte; |
1050 | ||
1051 | result = 0; | |
1052 | shift = 0; | |
1053 | num_read = 0; | |
1054 | do | |
1055 | { | |
f075ee0c | 1056 | byte = bfd_get_8 (abfd, buf); |
c0c28ab8 L |
1057 | buf ++; |
1058 | num_read ++; | |
1059 | result |= (((bfd_vma) byte & 0x7f) << shift); | |
1060 | shift += 7; | |
1061 | } | |
1062 | while (byte & 0x80); | |
f075ee0c | 1063 | if (shift < 8 * sizeof (result) && (byte & 0x40)) |
c0c28ab8 L |
1064 | result |= (((bfd_vma) -1) << shift); |
1065 | *bytes_read_ptr = num_read; | |
1066 | return result; | |
1067 | } | |
5420f73d | 1068 | |
ccd2ec6a L |
1069 | bfd_boolean |
1070 | _bfd_generic_init_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, | |
1071 | asection *isec ATTRIBUTE_UNUSED, | |
1072 | bfd *obfd ATTRIBUTE_UNUSED, | |
1073 | asection *osec ATTRIBUTE_UNUSED, | |
1074 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
1075 | { | |
1076 | return TRUE; | |
1077 | } |