Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Assorted BFD support routines, only used internally. |
b90efa5b | 2 | Copyright (C) 1990-2015 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 | ||
b34976b6 | 122 | bfd_boolean |
c58b9523 AM |
123 | _bfd_nocore_core_file_matches_executable_p |
124 | (bfd *ignore_core_bfd ATTRIBUTE_UNUSED, | |
125 | bfd *ignore_exec_bfd ATTRIBUTE_UNUSED) | |
252b5132 RH |
126 | { |
127 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 128 | return FALSE; |
252b5132 RH |
129 | } |
130 | ||
131 | /* Routine to handle core_file_failing_command entry point for targets | |
132 | without core file support. */ | |
133 | ||
252b5132 | 134 | char * |
c58b9523 | 135 | _bfd_nocore_core_file_failing_command (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
252b5132 RH |
136 | { |
137 | bfd_set_error (bfd_error_invalid_operation); | |
c58b9523 | 138 | return NULL; |
252b5132 RH |
139 | } |
140 | ||
141 | /* Routine to handle core_file_failing_signal entry point for targets | |
142 | without core file support. */ | |
143 | ||
252b5132 | 144 | int |
c58b9523 | 145 | _bfd_nocore_core_file_failing_signal (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
252b5132 RH |
146 | { |
147 | bfd_set_error (bfd_error_invalid_operation); | |
148 | return 0; | |
149 | } | |
150 | ||
261b8d08 PA |
151 | /* Routine to handle the core_file_pid entry point for targets without |
152 | core file support. */ | |
153 | ||
154 | int | |
155 | _bfd_nocore_core_file_pid (bfd *ignore_abfd ATTRIBUTE_UNUSED) | |
156 | { | |
157 | bfd_set_error (bfd_error_invalid_operation); | |
158 | return 0; | |
159 | } | |
160 | ||
252b5132 | 161 | const bfd_target * |
c58b9523 | 162 | _bfd_dummy_target (bfd *ignore_abfd ATTRIBUTE_UNUSED) |
252b5132 RH |
163 | { |
164 | bfd_set_error (bfd_error_wrong_format); | |
165 | return 0; | |
166 | } | |
167 | \f | |
168 | /* Allocate memory using malloc. */ | |
169 | ||
c58b9523 AM |
170 | void * |
171 | bfd_malloc (bfd_size_type size) | |
252b5132 | 172 | { |
c58b9523 | 173 | void *ptr; |
db6b071a | 174 | size_t sz = (size_t) size; |
252b5132 | 175 | |
db6b071a NC |
176 | if (size != sz |
177 | /* This is to pacify memory checkers like valgrind. */ | |
178 | || ((signed long) sz) < 0) | |
dc810e39 AM |
179 | { |
180 | bfd_set_error (bfd_error_no_memory); | |
181 | return NULL; | |
182 | } | |
183 | ||
db6b071a NC |
184 | ptr = malloc (sz); |
185 | if (ptr == NULL && sz != 0) | |
252b5132 | 186 | bfd_set_error (bfd_error_no_memory); |
dc810e39 | 187 | |
252b5132 RH |
188 | return ptr; |
189 | } | |
190 | ||
d0fb9a8d JJ |
191 | /* Allocate memory using malloc, nmemb * size with overflow checking. */ |
192 | ||
193 | void * | |
194 | bfd_malloc2 (bfd_size_type nmemb, bfd_size_type size) | |
195 | { | |
d0fb9a8d JJ |
196 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE |
197 | && size != 0 | |
198 | && nmemb > ~(bfd_size_type) 0 / size) | |
199 | { | |
200 | bfd_set_error (bfd_error_no_memory); | |
201 | return NULL; | |
202 | } | |
203 | ||
db6b071a | 204 | return bfd_malloc (size * nmemb); |
d0fb9a8d JJ |
205 | } |
206 | ||
252b5132 RH |
207 | /* Reallocate memory using realloc. */ |
208 | ||
c58b9523 AM |
209 | void * |
210 | bfd_realloc (void *ptr, bfd_size_type size) | |
252b5132 | 211 | { |
c58b9523 | 212 | void *ret; |
db6b071a | 213 | size_t sz = (size_t) size; |
252b5132 | 214 | |
db6b071a NC |
215 | if (ptr == NULL) |
216 | return bfd_malloc (size); | |
217 | ||
218 | if (size != sz | |
219 | /* This is to pacify memory checkers like valgrind. */ | |
220 | || ((signed long) sz) < 0) | |
dc810e39 AM |
221 | { |
222 | bfd_set_error (bfd_error_no_memory); | |
223 | return NULL; | |
224 | } | |
225 | ||
db6b071a | 226 | ret = realloc (ptr, sz); |
252b5132 | 227 | |
db6b071a | 228 | if (ret == NULL && sz != 0) |
252b5132 RH |
229 | bfd_set_error (bfd_error_no_memory); |
230 | ||
231 | return ret; | |
232 | } | |
233 | ||
d0fb9a8d JJ |
234 | /* Reallocate memory using realloc, nmemb * size with overflow checking. */ |
235 | ||
236 | void * | |
237 | bfd_realloc2 (void *ptr, bfd_size_type nmemb, bfd_size_type size) | |
238 | { | |
d0fb9a8d JJ |
239 | if ((nmemb | size) >= HALF_BFD_SIZE_TYPE |
240 | && size != 0 | |
241 | && nmemb > ~(bfd_size_type) 0 / size) | |
242 | { | |
243 | bfd_set_error (bfd_error_no_memory); | |
244 | return NULL; | |
245 | } | |
246 | ||
db6b071a | 247 | return bfd_realloc (ptr, size * nmemb); |
d0fb9a8d JJ |
248 | } |
249 | ||
515ef31d NC |
250 | /* Reallocate memory using realloc. |
251 | If this fails the pointer is freed before returning. */ | |
252 | ||
253 | void * | |
254 | bfd_realloc_or_free (void *ptr, bfd_size_type size) | |
255 | { | |
db6b071a | 256 | void *ret = bfd_realloc (ptr, size); |
515ef31d | 257 | |
db6b071a NC |
258 | if (ret == NULL && ptr != NULL) |
259 | free (ptr); | |
515ef31d NC |
260 | |
261 | return ret; | |
262 | } | |
263 | ||
252b5132 RH |
264 | /* Allocate memory using malloc and clear it. */ |
265 | ||
c58b9523 AM |
266 | void * |
267 | bfd_zmalloc (bfd_size_type size) | |
252b5132 | 268 | { |
db6b071a | 269 | void *ptr = bfd_malloc (size); |
252b5132 | 270 | |
db6b071a NC |
271 | if (ptr != NULL && size > 0) |
272 | memset (ptr, 0, (size_t) size); | |
252b5132 RH |
273 | |
274 | return ptr; | |
275 | } | |
d0fb9a8d JJ |
276 | |
277 | /* Allocate memory using malloc (nmemb * size) with overflow checking | |
278 | and clear it. */ | |
279 | ||
280 | void * | |
281 | bfd_zmalloc2 (bfd_size_type nmemb, bfd_size_type size) | |
282 | { | |
db6b071a | 283 | void *ptr = bfd_malloc2 (nmemb, size); |
d0fb9a8d | 284 | |
db6b071a | 285 | if (ptr != NULL) |
d0fb9a8d | 286 | { |
db6b071a | 287 | size_t sz = nmemb * size; |
d0fb9a8d | 288 | |
db6b071a NC |
289 | if (sz > 0) |
290 | memset (ptr, 0, sz); | |
d0fb9a8d JJ |
291 | } |
292 | ||
293 | return ptr; | |
294 | } | |
295 | ||
252b5132 RH |
296 | /* |
297 | INTERNAL_FUNCTION | |
298 | bfd_write_bigendian_4byte_int | |
299 | ||
300 | SYNOPSIS | |
b34976b6 | 301 | bfd_boolean bfd_write_bigendian_4byte_int (bfd *, unsigned int); |
252b5132 RH |
302 | |
303 | DESCRIPTION | |
304 | Write a 4 byte integer @var{i} to the output BFD @var{abfd}, in big | |
305 | endian order regardless of what else is going on. This is useful in | |
306 | archives. | |
307 | ||
308 | */ | |
b34976b6 | 309 | bfd_boolean |
c58b9523 | 310 | bfd_write_bigendian_4byte_int (bfd *abfd, unsigned int i) |
252b5132 RH |
311 | { |
312 | bfd_byte buffer[4]; | |
dc810e39 | 313 | bfd_putb32 ((bfd_vma) i, buffer); |
c58b9523 | 314 | return bfd_bwrite (buffer, (bfd_size_type) 4, abfd) == 4; |
252b5132 RH |
315 | } |
316 | ||
252b5132 RH |
317 | \f |
318 | /** The do-it-yourself (byte) sex-change kit */ | |
319 | ||
320 | /* The middle letter e.g. get<b>short indicates Big or Little endian | |
321 | target machine. It doesn't matter what the byte order of the host | |
322 | machine is; these routines work for either. */ | |
323 | ||
324 | /* FIXME: Should these take a count argument? | |
325 | Answer (gnu@cygnus.com): No, but perhaps they should be inline | |
509945ae | 326 | functions in swap.h #ifdef __GNUC__. |
252b5132 RH |
327 | Gprof them later and find out. */ |
328 | ||
329 | /* | |
330 | FUNCTION | |
331 | bfd_put_size | |
332 | FUNCTION | |
333 | bfd_get_size | |
334 | ||
335 | DESCRIPTION | |
336 | These macros as used for reading and writing raw data in | |
337 | sections; each access (except for bytes) is vectored through | |
338 | the target format of the BFD and mangled accordingly. The | |
339 | mangling performs any necessary endian translations and | |
340 | removes alignment restrictions. Note that types accepted and | |
341 | returned by these macros are identical so they can be swapped | |
342 | around in macros---for example, @file{libaout.h} defines <<GET_WORD>> | |
343 | to either <<bfd_get_32>> or <<bfd_get_64>>. | |
344 | ||
345 | In the put routines, @var{val} must be a <<bfd_vma>>. If we are on a | |
346 | system without prototypes, the caller is responsible for making | |
347 | sure that is true, with a cast if necessary. We don't cast | |
348 | them in the macro definitions because that would prevent <<lint>> | |
349 | or <<gcc -Wall>> from detecting sins such as passing a pointer. | |
350 | To detect calling these with less than a <<bfd_vma>>, use | |
351 | <<gcc -Wconversion>> on a host with 64 bit <<bfd_vma>>'s. | |
352 | ||
353 | . | |
354 | .{* Byte swapping macros for user section data. *} | |
355 | . | |
356 | .#define bfd_put_8(abfd, val, ptr) \ | |
edeb6e24 | 357 | . ((void) (*((unsigned char *) (ptr)) = (val) & 0xff)) |
252b5132 | 358 | .#define bfd_put_signed_8 \ |
c58b9523 | 359 | . bfd_put_8 |
252b5132 | 360 | .#define bfd_get_8(abfd, ptr) \ |
70778fc7 | 361 | . (*(const unsigned char *) (ptr) & 0xff) |
252b5132 | 362 | .#define bfd_get_signed_8(abfd, ptr) \ |
70778fc7 | 363 | . (((*(const unsigned char *) (ptr) & 0xff) ^ 0x80) - 0x80) |
252b5132 RH |
364 | . |
365 | .#define bfd_put_16(abfd, val, ptr) \ | |
c58b9523 | 366 | . BFD_SEND (abfd, bfd_putx16, ((val),(ptr))) |
252b5132 | 367 | .#define bfd_put_signed_16 \ |
c58b9523 | 368 | . bfd_put_16 |
252b5132 | 369 | .#define bfd_get_16(abfd, ptr) \ |
c58b9523 | 370 | . BFD_SEND (abfd, bfd_getx16, (ptr)) |
252b5132 | 371 | .#define bfd_get_signed_16(abfd, ptr) \ |
c58b9523 | 372 | . BFD_SEND (abfd, bfd_getx_signed_16, (ptr)) |
252b5132 RH |
373 | . |
374 | .#define bfd_put_32(abfd, val, ptr) \ | |
c58b9523 | 375 | . BFD_SEND (abfd, bfd_putx32, ((val),(ptr))) |
252b5132 | 376 | .#define bfd_put_signed_32 \ |
c58b9523 | 377 | . bfd_put_32 |
252b5132 | 378 | .#define bfd_get_32(abfd, ptr) \ |
c58b9523 | 379 | . BFD_SEND (abfd, bfd_getx32, (ptr)) |
252b5132 | 380 | .#define bfd_get_signed_32(abfd, ptr) \ |
c58b9523 | 381 | . BFD_SEND (abfd, bfd_getx_signed_32, (ptr)) |
252b5132 RH |
382 | . |
383 | .#define bfd_put_64(abfd, val, ptr) \ | |
c58b9523 | 384 | . BFD_SEND (abfd, bfd_putx64, ((val), (ptr))) |
252b5132 | 385 | .#define bfd_put_signed_64 \ |
c58b9523 | 386 | . bfd_put_64 |
252b5132 | 387 | .#define bfd_get_64(abfd, ptr) \ |
c58b9523 | 388 | . BFD_SEND (abfd, bfd_getx64, (ptr)) |
252b5132 | 389 | .#define bfd_get_signed_64(abfd, ptr) \ |
c58b9523 | 390 | . BFD_SEND (abfd, bfd_getx_signed_64, (ptr)) |
252b5132 | 391 | . |
c58b9523 AM |
392 | .#define bfd_get(bits, abfd, ptr) \ |
393 | . ((bits) == 8 ? (bfd_vma) bfd_get_8 (abfd, ptr) \ | |
394 | . : (bits) == 16 ? bfd_get_16 (abfd, ptr) \ | |
395 | . : (bits) == 32 ? bfd_get_32 (abfd, ptr) \ | |
396 | . : (bits) == 64 ? bfd_get_64 (abfd, ptr) \ | |
397 | . : (abort (), (bfd_vma) - 1)) | |
c7ac6ff8 | 398 | . |
c58b9523 AM |
399 | .#define bfd_put(bits, abfd, val, ptr) \ |
400 | . ((bits) == 8 ? bfd_put_8 (abfd, val, ptr) \ | |
401 | . : (bits) == 16 ? bfd_put_16 (abfd, val, ptr) \ | |
402 | . : (bits) == 32 ? bfd_put_32 (abfd, val, ptr) \ | |
403 | . : (bits) == 64 ? bfd_put_64 (abfd, val, ptr) \ | |
404 | . : (abort (), (void) 0)) | |
c7ac6ff8 | 405 | . |
509945ae | 406 | */ |
252b5132 RH |
407 | |
408 | /* | |
409 | FUNCTION | |
410 | bfd_h_put_size | |
411 | bfd_h_get_size | |
412 | ||
413 | DESCRIPTION | |
414 | These macros have the same function as their <<bfd_get_x>> | |
dc810e39 | 415 | brethren, except that they are used for removing information |
252b5132 RH |
416 | for the header records of object files. Believe it or not, |
417 | some object files keep their header records in big endian | |
418 | order and their data in little endian order. | |
419 | . | |
420 | .{* Byte swapping macros for file header data. *} | |
421 | . | |
422 | .#define bfd_h_put_8(abfd, val, ptr) \ | |
dc810e39 | 423 | . bfd_put_8 (abfd, val, ptr) |
252b5132 | 424 | .#define bfd_h_put_signed_8(abfd, val, ptr) \ |
dc810e39 | 425 | . bfd_put_8 (abfd, val, ptr) |
252b5132 | 426 | .#define bfd_h_get_8(abfd, ptr) \ |
dc810e39 | 427 | . bfd_get_8 (abfd, ptr) |
252b5132 | 428 | .#define bfd_h_get_signed_8(abfd, ptr) \ |
dc810e39 | 429 | . bfd_get_signed_8 (abfd, ptr) |
252b5132 RH |
430 | . |
431 | .#define bfd_h_put_16(abfd, val, ptr) \ | |
dc810e39 | 432 | . BFD_SEND (abfd, bfd_h_putx16, (val, ptr)) |
252b5132 | 433 | .#define bfd_h_put_signed_16 \ |
dc810e39 | 434 | . bfd_h_put_16 |
252b5132 | 435 | .#define bfd_h_get_16(abfd, ptr) \ |
dc810e39 | 436 | . BFD_SEND (abfd, bfd_h_getx16, (ptr)) |
252b5132 | 437 | .#define bfd_h_get_signed_16(abfd, ptr) \ |
dc810e39 | 438 | . BFD_SEND (abfd, bfd_h_getx_signed_16, (ptr)) |
252b5132 RH |
439 | . |
440 | .#define bfd_h_put_32(abfd, val, ptr) \ | |
dc810e39 | 441 | . BFD_SEND (abfd, bfd_h_putx32, (val, ptr)) |
252b5132 | 442 | .#define bfd_h_put_signed_32 \ |
dc810e39 | 443 | . bfd_h_put_32 |
252b5132 | 444 | .#define bfd_h_get_32(abfd, ptr) \ |
dc810e39 | 445 | . BFD_SEND (abfd, bfd_h_getx32, (ptr)) |
252b5132 | 446 | .#define bfd_h_get_signed_32(abfd, ptr) \ |
dc810e39 | 447 | . BFD_SEND (abfd, bfd_h_getx_signed_32, (ptr)) |
252b5132 RH |
448 | . |
449 | .#define bfd_h_put_64(abfd, val, ptr) \ | |
dc810e39 | 450 | . BFD_SEND (abfd, bfd_h_putx64, (val, ptr)) |
252b5132 | 451 | .#define bfd_h_put_signed_64 \ |
dc810e39 | 452 | . bfd_h_put_64 |
252b5132 | 453 | .#define bfd_h_get_64(abfd, ptr) \ |
dc810e39 | 454 | . BFD_SEND (abfd, bfd_h_getx64, (ptr)) |
252b5132 | 455 | .#define bfd_h_get_signed_64(abfd, ptr) \ |
dc810e39 | 456 | . BFD_SEND (abfd, bfd_h_getx_signed_64, (ptr)) |
252b5132 | 457 | . |
edeb6e24 | 458 | .{* Aliases for the above, which should eventually go away. *} |
dc810e39 | 459 | . |
edeb6e24 AM |
460 | .#define H_PUT_64 bfd_h_put_64 |
461 | .#define H_PUT_32 bfd_h_put_32 | |
462 | .#define H_PUT_16 bfd_h_put_16 | |
463 | .#define H_PUT_8 bfd_h_put_8 | |
464 | .#define H_PUT_S64 bfd_h_put_signed_64 | |
465 | .#define H_PUT_S32 bfd_h_put_signed_32 | |
466 | .#define H_PUT_S16 bfd_h_put_signed_16 | |
467 | .#define H_PUT_S8 bfd_h_put_signed_8 | |
468 | .#define H_GET_64 bfd_h_get_64 | |
469 | .#define H_GET_32 bfd_h_get_32 | |
470 | .#define H_GET_16 bfd_h_get_16 | |
471 | .#define H_GET_8 bfd_h_get_8 | |
472 | .#define H_GET_S64 bfd_h_get_signed_64 | |
473 | .#define H_GET_S32 bfd_h_get_signed_32 | |
474 | .#define H_GET_S16 bfd_h_get_signed_16 | |
475 | .#define H_GET_S8 bfd_h_get_signed_8 | |
dc810e39 AM |
476 | . |
477 | .*/ | |
252b5132 RH |
478 | |
479 | /* Sign extension to bfd_signed_vma. */ | |
65879393 AM |
480 | #define COERCE16(x) (((bfd_vma) (x) ^ 0x8000) - 0x8000) |
481 | #define COERCE32(x) (((bfd_vma) (x) ^ 0x80000000) - 0x80000000) | |
252b5132 | 482 | #define COERCE64(x) \ |
65879393 | 483 | (((bfd_uint64_t) (x) ^ ((bfd_uint64_t) 1 << 63)) - ((bfd_uint64_t) 1 << 63)) |
252b5132 RH |
484 | |
485 | bfd_vma | |
edeb6e24 | 486 | bfd_getb16 (const void *p) |
252b5132 | 487 | { |
a50b1753 | 488 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
489 | return (addr[0] << 8) | addr[1]; |
490 | } | |
491 | ||
492 | bfd_vma | |
edeb6e24 | 493 | bfd_getl16 (const void *p) |
252b5132 | 494 | { |
a50b1753 | 495 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
496 | return (addr[1] << 8) | addr[0]; |
497 | } | |
498 | ||
499 | bfd_signed_vma | |
edeb6e24 | 500 | bfd_getb_signed_16 (const void *p) |
252b5132 | 501 | { |
a50b1753 | 502 | const bfd_byte *addr = (const bfd_byte *) p; |
c58b9523 | 503 | return COERCE16 ((addr[0] << 8) | addr[1]); |
252b5132 RH |
504 | } |
505 | ||
506 | bfd_signed_vma | |
edeb6e24 | 507 | bfd_getl_signed_16 (const void *p) |
252b5132 | 508 | { |
a50b1753 | 509 | const bfd_byte *addr = (const bfd_byte *) p; |
c58b9523 | 510 | return COERCE16 ((addr[1] << 8) | addr[0]); |
252b5132 RH |
511 | } |
512 | ||
513 | void | |
edeb6e24 | 514 | bfd_putb16 (bfd_vma data, void *p) |
252b5132 | 515 | { |
a50b1753 | 516 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
517 | addr[0] = (data >> 8) & 0xff; |
518 | addr[1] = data & 0xff; | |
252b5132 RH |
519 | } |
520 | ||
521 | void | |
edeb6e24 | 522 | bfd_putl16 (bfd_vma data, void *p) |
252b5132 | 523 | { |
a50b1753 | 524 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
525 | addr[0] = data & 0xff; |
526 | addr[1] = (data >> 8) & 0xff; | |
252b5132 RH |
527 | } |
528 | ||
529 | bfd_vma | |
edeb6e24 | 530 | bfd_getb32 (const void *p) |
252b5132 | 531 | { |
a50b1753 | 532 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
533 | unsigned long v; |
534 | ||
535 | v = (unsigned long) addr[0] << 24; | |
536 | v |= (unsigned long) addr[1] << 16; | |
537 | v |= (unsigned long) addr[2] << 8; | |
538 | v |= (unsigned long) addr[3]; | |
c58b9523 | 539 | return v; |
252b5132 RH |
540 | } |
541 | ||
542 | bfd_vma | |
edeb6e24 | 543 | bfd_getl32 (const void *p) |
252b5132 | 544 | { |
a50b1753 | 545 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
546 | unsigned long v; |
547 | ||
548 | v = (unsigned long) addr[0]; | |
549 | v |= (unsigned long) addr[1] << 8; | |
550 | v |= (unsigned long) addr[2] << 16; | |
551 | v |= (unsigned long) addr[3] << 24; | |
c58b9523 | 552 | return v; |
252b5132 RH |
553 | } |
554 | ||
555 | bfd_signed_vma | |
edeb6e24 | 556 | bfd_getb_signed_32 (const void *p) |
252b5132 | 557 | { |
a50b1753 | 558 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
559 | unsigned long v; |
560 | ||
561 | v = (unsigned long) addr[0] << 24; | |
562 | v |= (unsigned long) addr[1] << 16; | |
563 | v |= (unsigned long) addr[2] << 8; | |
564 | v |= (unsigned long) addr[3]; | |
565 | return COERCE32 (v); | |
566 | } | |
567 | ||
568 | bfd_signed_vma | |
edeb6e24 | 569 | bfd_getl_signed_32 (const void *p) |
252b5132 | 570 | { |
a50b1753 | 571 | const bfd_byte *addr = (const bfd_byte *) p; |
252b5132 RH |
572 | unsigned long v; |
573 | ||
574 | v = (unsigned long) addr[0]; | |
575 | v |= (unsigned long) addr[1] << 8; | |
576 | v |= (unsigned long) addr[2] << 16; | |
577 | v |= (unsigned long) addr[3] << 24; | |
578 | return COERCE32 (v); | |
579 | } | |
580 | ||
8ce8c090 | 581 | bfd_uint64_t |
edeb6e24 | 582 | bfd_getb64 (const void *p ATTRIBUTE_UNUSED) |
252b5132 | 583 | { |
8ce8c090 | 584 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 585 | const bfd_byte *addr = (const bfd_byte *) p; |
8ce8c090 | 586 | bfd_uint64_t v; |
c58b9523 AM |
587 | |
588 | v = addr[0]; v <<= 8; | |
589 | v |= addr[1]; v <<= 8; | |
590 | v |= addr[2]; v <<= 8; | |
591 | v |= addr[3]; v <<= 8; | |
592 | v |= addr[4]; v <<= 8; | |
593 | v |= addr[5]; v <<= 8; | |
594 | v |= addr[6]; v <<= 8; | |
595 | v |= addr[7]; | |
596 | ||
597 | return v; | |
252b5132 RH |
598 | #else |
599 | BFD_FAIL(); | |
600 | return 0; | |
601 | #endif | |
602 | } | |
603 | ||
8ce8c090 | 604 | bfd_uint64_t |
edeb6e24 | 605 | bfd_getl64 (const void *p ATTRIBUTE_UNUSED) |
252b5132 | 606 | { |
8ce8c090 | 607 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 608 | const bfd_byte *addr = (const bfd_byte *) p; |
8ce8c090 | 609 | bfd_uint64_t v; |
c58b9523 AM |
610 | |
611 | v = addr[7]; v <<= 8; | |
612 | v |= addr[6]; v <<= 8; | |
613 | v |= addr[5]; v <<= 8; | |
614 | v |= addr[4]; v <<= 8; | |
615 | v |= addr[3]; v <<= 8; | |
616 | v |= addr[2]; v <<= 8; | |
617 | v |= addr[1]; v <<= 8; | |
618 | v |= addr[0]; | |
619 | ||
620 | return v; | |
252b5132 RH |
621 | #else |
622 | BFD_FAIL(); | |
623 | return 0; | |
624 | #endif | |
625 | ||
626 | } | |
627 | ||
8ce8c090 | 628 | bfd_int64_t |
edeb6e24 | 629 | bfd_getb_signed_64 (const void *p ATTRIBUTE_UNUSED) |
252b5132 | 630 | { |
8ce8c090 | 631 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 632 | const bfd_byte *addr = (const bfd_byte *) p; |
8ce8c090 | 633 | bfd_uint64_t v; |
c58b9523 AM |
634 | |
635 | v = addr[0]; v <<= 8; | |
636 | v |= addr[1]; v <<= 8; | |
637 | v |= addr[2]; v <<= 8; | |
638 | v |= addr[3]; v <<= 8; | |
639 | v |= addr[4]; v <<= 8; | |
640 | v |= addr[5]; v <<= 8; | |
641 | v |= addr[6]; v <<= 8; | |
642 | v |= addr[7]; | |
643 | ||
644 | return COERCE64 (v); | |
252b5132 RH |
645 | #else |
646 | BFD_FAIL(); | |
647 | return 0; | |
648 | #endif | |
649 | } | |
650 | ||
8ce8c090 | 651 | bfd_int64_t |
edeb6e24 | 652 | bfd_getl_signed_64 (const void *p ATTRIBUTE_UNUSED) |
252b5132 | 653 | { |
8ce8c090 | 654 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 655 | const bfd_byte *addr = (const bfd_byte *) p; |
8ce8c090 | 656 | bfd_uint64_t v; |
c58b9523 AM |
657 | |
658 | v = addr[7]; v <<= 8; | |
659 | v |= addr[6]; v <<= 8; | |
660 | v |= addr[5]; v <<= 8; | |
661 | v |= addr[4]; v <<= 8; | |
662 | v |= addr[3]; v <<= 8; | |
663 | v |= addr[2]; v <<= 8; | |
664 | v |= addr[1]; v <<= 8; | |
665 | v |= addr[0]; | |
666 | ||
667 | return COERCE64 (v); | |
252b5132 RH |
668 | #else |
669 | BFD_FAIL(); | |
670 | return 0; | |
671 | #endif | |
672 | } | |
673 | ||
674 | void | |
edeb6e24 | 675 | bfd_putb32 (bfd_vma data, void *p) |
252b5132 | 676 | { |
a50b1753 | 677 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
678 | addr[0] = (data >> 24) & 0xff; |
679 | addr[1] = (data >> 16) & 0xff; | |
680 | addr[2] = (data >> 8) & 0xff; | |
681 | addr[3] = data & 0xff; | |
252b5132 RH |
682 | } |
683 | ||
684 | void | |
edeb6e24 | 685 | bfd_putl32 (bfd_vma data, void *p) |
252b5132 | 686 | { |
a50b1753 | 687 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
688 | addr[0] = data & 0xff; |
689 | addr[1] = (data >> 8) & 0xff; | |
690 | addr[2] = (data >> 16) & 0xff; | |
691 | addr[3] = (data >> 24) & 0xff; | |
252b5132 RH |
692 | } |
693 | ||
694 | void | |
8ce8c090 | 695 | bfd_putb64 (bfd_uint64_t data ATTRIBUTE_UNUSED, void *p ATTRIBUTE_UNUSED) |
252b5132 | 696 | { |
8ce8c090 | 697 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 698 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
699 | addr[0] = (data >> (7*8)) & 0xff; |
700 | addr[1] = (data >> (6*8)) & 0xff; | |
701 | addr[2] = (data >> (5*8)) & 0xff; | |
702 | addr[3] = (data >> (4*8)) & 0xff; | |
703 | addr[4] = (data >> (3*8)) & 0xff; | |
704 | addr[5] = (data >> (2*8)) & 0xff; | |
705 | addr[6] = (data >> (1*8)) & 0xff; | |
706 | addr[7] = (data >> (0*8)) & 0xff; | |
252b5132 RH |
707 | #else |
708 | BFD_FAIL(); | |
709 | #endif | |
710 | } | |
711 | ||
712 | void | |
8ce8c090 | 713 | bfd_putl64 (bfd_uint64_t data ATTRIBUTE_UNUSED, void *p ATTRIBUTE_UNUSED) |
252b5132 | 714 | { |
8ce8c090 | 715 | #ifdef BFD_HOST_64_BIT |
a50b1753 | 716 | bfd_byte *addr = (bfd_byte *) p; |
edeb6e24 AM |
717 | addr[7] = (data >> (7*8)) & 0xff; |
718 | addr[6] = (data >> (6*8)) & 0xff; | |
719 | addr[5] = (data >> (5*8)) & 0xff; | |
720 | addr[4] = (data >> (4*8)) & 0xff; | |
721 | addr[3] = (data >> (3*8)) & 0xff; | |
722 | addr[2] = (data >> (2*8)) & 0xff; | |
723 | addr[1] = (data >> (1*8)) & 0xff; | |
724 | addr[0] = (data >> (0*8)) & 0xff; | |
252b5132 RH |
725 | #else |
726 | BFD_FAIL(); | |
727 | #endif | |
728 | } | |
8c603c85 NC |
729 | |
730 | void | |
8ce8c090 | 731 | bfd_put_bits (bfd_uint64_t data, void *p, int bits, bfd_boolean big_p) |
8c603c85 | 732 | { |
a50b1753 | 733 | bfd_byte *addr = (bfd_byte *) p; |
8c603c85 NC |
734 | int i; |
735 | int bytes; | |
736 | ||
737 | if (bits % 8 != 0) | |
738 | abort (); | |
739 | ||
740 | bytes = bits / 8; | |
741 | for (i = 0; i < bytes; i++) | |
742 | { | |
91d6fa6a | 743 | int addr_index = big_p ? bytes - i - 1 : i; |
8c603c85 | 744 | |
91d6fa6a | 745 | addr[addr_index] = data & 0xff; |
8c603c85 NC |
746 | data >>= 8; |
747 | } | |
748 | } | |
749 | ||
8ce8c090 | 750 | bfd_uint64_t |
edeb6e24 | 751 | bfd_get_bits (const void *p, int bits, bfd_boolean big_p) |
8c603c85 | 752 | { |
a50b1753 | 753 | const bfd_byte *addr = (const bfd_byte *) p; |
8ce8c090 | 754 | bfd_uint64_t data; |
8c603c85 NC |
755 | int i; |
756 | int bytes; | |
757 | ||
758 | if (bits % 8 != 0) | |
759 | abort (); | |
760 | ||
761 | data = 0; | |
762 | bytes = bits / 8; | |
763 | for (i = 0; i < bytes; i++) | |
764 | { | |
91d6fa6a | 765 | int addr_index = big_p ? i : bytes - i - 1; |
509945ae | 766 | |
91d6fa6a | 767 | data = (data << 8) | addr[addr_index]; |
8c603c85 NC |
768 | } |
769 | ||
770 | return data; | |
771 | } | |
252b5132 RH |
772 | \f |
773 | /* Default implementation */ | |
774 | ||
b34976b6 | 775 | bfd_boolean |
c58b9523 AM |
776 | _bfd_generic_get_section_contents (bfd *abfd, |
777 | sec_ptr section, | |
778 | void *location, | |
779 | file_ptr offset, | |
780 | bfd_size_type count) | |
252b5132 | 781 | { |
eea6121a | 782 | bfd_size_type sz; |
0bff3f4b | 783 | if (count == 0) |
b34976b6 | 784 | return TRUE; |
0bff3f4b | 785 | |
4a114e3e L |
786 | if (section->compress_status != COMPRESS_SECTION_NONE) |
787 | { | |
788 | (*_bfd_error_handler) | |
789 | (_("%B: unable to get decompressed section %A"), | |
790 | abfd, section); | |
791 | bfd_set_error (bfd_error_invalid_operation); | |
792 | return FALSE; | |
793 | } | |
794 | ||
e57278ef AM |
795 | /* We do allow reading of a section after bfd_final_link has |
796 | written the contents out to disk. In that situation, rawsize is | |
797 | just a stale version of size, so ignore it. Otherwise we must be | |
798 | reading an input section, where rawsize, if different to size, | |
799 | is the on-disk size. */ | |
800 | if (abfd->direction != write_direction && section->rawsize != 0) | |
801 | sz = section->rawsize; | |
802 | else | |
803 | sz = section->size; | |
e62071b6 AM |
804 | if (offset + count < count |
805 | || offset + count > sz) | |
0bff3f4b ILT |
806 | { |
807 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 808 | return FALSE; |
0bff3f4b ILT |
809 | } |
810 | ||
811 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 812 | || bfd_bread (location, count, abfd) != count) |
b34976b6 | 813 | return FALSE; |
0bff3f4b | 814 | |
b34976b6 | 815 | return TRUE; |
252b5132 RH |
816 | } |
817 | ||
b34976b6 | 818 | bfd_boolean |
c58b9523 AM |
819 | _bfd_generic_get_section_contents_in_window |
820 | (bfd *abfd ATTRIBUTE_UNUSED, | |
821 | sec_ptr section ATTRIBUTE_UNUSED, | |
822 | bfd_window *w ATTRIBUTE_UNUSED, | |
823 | file_ptr offset ATTRIBUTE_UNUSED, | |
824 | bfd_size_type count ATTRIBUTE_UNUSED) | |
252b5132 RH |
825 | { |
826 | #ifdef USE_MMAP | |
eea6121a AM |
827 | bfd_size_type sz; |
828 | ||
252b5132 | 829 | if (count == 0) |
b34976b6 | 830 | return TRUE; |
c58b9523 AM |
831 | if (abfd->xvec->_bfd_get_section_contents |
832 | != _bfd_generic_get_section_contents) | |
252b5132 RH |
833 | { |
834 | /* We don't know what changes the bfd's get_section_contents | |
835 | method may have to make. So punt trying to map the file | |
836 | window, and let get_section_contents do its thing. */ | |
837 | /* @@ FIXME : If the internal window has a refcount of 1 and was | |
838 | allocated with malloc instead of mmap, just reuse it. */ | |
839 | bfd_free_window (w); | |
c58b9523 | 840 | w->i = bfd_zmalloc (sizeof (bfd_window_internal)); |
252b5132 | 841 | if (w->i == NULL) |
b34976b6 | 842 | return FALSE; |
c58b9523 | 843 | w->i->data = bfd_malloc (count); |
252b5132 RH |
844 | if (w->i->data == NULL) |
845 | { | |
846 | free (w->i); | |
847 | w->i = NULL; | |
b34976b6 | 848 | return FALSE; |
252b5132 RH |
849 | } |
850 | w->i->mapped = 0; | |
851 | w->i->refcount = 1; | |
852 | w->size = w->i->size = count; | |
853 | w->data = w->i->data; | |
854 | return bfd_get_section_contents (abfd, section, w->data, offset, count); | |
855 | } | |
e57278ef AM |
856 | if (abfd->direction != write_direction && section->rawsize != 0) |
857 | sz = section->rawsize; | |
858 | else | |
859 | sz = section->size; | |
eea6121a | 860 | if (offset + count > sz |
82e51918 | 861 | || ! bfd_get_file_window (abfd, section->filepos + offset, count, w, |
b34976b6 AM |
862 | TRUE)) |
863 | return FALSE; | |
864 | return TRUE; | |
252b5132 RH |
865 | #else |
866 | abort (); | |
867 | #endif | |
868 | } | |
869 | ||
870 | /* This generic function can only be used in implementations where creating | |
871 | NEW sections is disallowed. It is useful in patching existing sections | |
872 | in read-write files, though. See other set_section_contents functions | |
873 | to see why it doesn't work for new sections. */ | |
b34976b6 | 874 | bfd_boolean |
c58b9523 AM |
875 | _bfd_generic_set_section_contents (bfd *abfd, |
876 | sec_ptr section, | |
0f867abe | 877 | const void *location, |
c58b9523 AM |
878 | file_ptr offset, |
879 | bfd_size_type count) | |
252b5132 RH |
880 | { |
881 | if (count == 0) | |
b34976b6 | 882 | return TRUE; |
252b5132 | 883 | |
dc810e39 AM |
884 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 |
885 | || bfd_bwrite (location, count, abfd) != count) | |
b34976b6 | 886 | return FALSE; |
252b5132 | 887 | |
b34976b6 | 888 | return TRUE; |
252b5132 RH |
889 | } |
890 | ||
891 | /* | |
892 | INTERNAL_FUNCTION | |
893 | bfd_log2 | |
894 | ||
895 | SYNOPSIS | |
dc810e39 | 896 | unsigned int bfd_log2 (bfd_vma x); |
252b5132 RH |
897 | |
898 | DESCRIPTION | |
899 | Return the log base 2 of the value supplied, rounded up. E.g., an | |
dc810e39 | 900 | @var{x} of 1025 returns 11. A @var{x} of 0 returns 0. |
252b5132 RH |
901 | */ |
902 | ||
903 | unsigned int | |
c58b9523 | 904 | bfd_log2 (bfd_vma x) |
252b5132 RH |
905 | { |
906 | unsigned int result = 0; | |
907 | ||
9e6619e2 AM |
908 | if (x <= 1) |
909 | return result; | |
910 | --x; | |
911 | do | |
252b5132 | 912 | ++result; |
9e6619e2 | 913 | while ((x >>= 1) != 0); |
252b5132 RH |
914 | return result; |
915 | } | |
916 | ||
b34976b6 | 917 | bfd_boolean |
c58b9523 | 918 | bfd_generic_is_local_label_name (bfd *abfd, const char *name) |
252b5132 RH |
919 | { |
920 | char locals_prefix = (bfd_get_symbol_leading_char (abfd) == '_') ? 'L' : '.'; | |
921 | ||
b34976b6 | 922 | return name[0] == locals_prefix; |
252b5132 RH |
923 | } |
924 | ||
875f7f69 JR |
925 | /* Can be used from / for bfd_merge_private_bfd_data to check that |
926 | endianness matches between input and output file. Returns | |
b34976b6 AM |
927 | TRUE for a match, otherwise returns FALSE and emits an error. */ |
928 | bfd_boolean | |
c58b9523 | 929 | _bfd_generic_verify_endian_match (bfd *ibfd, bfd *obfd) |
875f7f69 JR |
930 | { |
931 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
1fe494a5 | 932 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
875f7f69 JR |
933 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
934 | { | |
1fe494a5 NC |
935 | const char *msg; |
936 | ||
937 | if (bfd_big_endian (ibfd)) | |
d003868e | 938 | msg = _("%B: compiled for a big endian system and target is little endian"); |
1fe494a5 | 939 | else |
d003868e | 940 | msg = _("%B: compiled for a little endian system and target is big endian"); |
1fe494a5 | 941 | |
d003868e | 942 | (*_bfd_error_handler) (msg, ibfd); |
875f7f69 JR |
943 | |
944 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 945 | return FALSE; |
875f7f69 JR |
946 | } |
947 | ||
b34976b6 | 948 | return TRUE; |
875f7f69 | 949 | } |
dc810e39 AM |
950 | |
951 | /* Give a warning at runtime if someone compiles code which calls | |
952 | old routines. */ | |
ca09e32b | 953 | |
dc810e39 | 954 | void |
c58b9523 AM |
955 | warn_deprecated (const char *what, |
956 | const char *file, | |
957 | int line, | |
958 | const char *func) | |
dc810e39 AM |
959 | { |
960 | /* Poor man's tracking of functions we've already warned about. */ | |
961 | static size_t mask = 0; | |
962 | ||
963 | if (~(size_t) func & ~mask) | |
964 | { | |
4a97a0e5 | 965 | fflush (stdout); |
73722af0 | 966 | /* Note: separate sentences in order to allow |
ca09e32b | 967 | for translation into other languages. */ |
dc810e39 | 968 | if (func) |
ca09e32b NC |
969 | fprintf (stderr, _("Deprecated %s called at %s line %d in %s\n"), |
970 | what, file, line, func); | |
dc810e39 | 971 | else |
ca09e32b | 972 | fprintf (stderr, _("Deprecated %s called\n"), what); |
4a97a0e5 | 973 | fflush (stderr); |
dc810e39 AM |
974 | mask |= ~(size_t) func; |
975 | } | |
976 | } | |
c0c28ab8 L |
977 | |
978 | /* Helper function for reading uleb128 encoded data. */ | |
979 | ||
980 | bfd_vma | |
981 | read_unsigned_leb128 (bfd *abfd ATTRIBUTE_UNUSED, | |
f075ee0c | 982 | bfd_byte *buf, |
c0c28ab8 L |
983 | unsigned int *bytes_read_ptr) |
984 | { | |
985 | bfd_vma result; | |
986 | unsigned int num_read; | |
f075ee0c | 987 | unsigned int shift; |
c0c28ab8 L |
988 | unsigned char byte; |
989 | ||
990 | result = 0; | |
991 | shift = 0; | |
992 | num_read = 0; | |
993 | do | |
994 | { | |
f075ee0c | 995 | byte = bfd_get_8 (abfd, buf); |
c0c28ab8 L |
996 | buf++; |
997 | num_read++; | |
998 | result |= (((bfd_vma) byte & 0x7f) << shift); | |
999 | shift += 7; | |
1000 | } | |
1001 | while (byte & 0x80); | |
1002 | *bytes_read_ptr = num_read; | |
1003 | return result; | |
1004 | } | |
1005 | ||
f64e188b NC |
1006 | /* Read in a LEB128 encoded value from ABFD starting at DATA. |
1007 | If SIGN is true, return a signed LEB128 value. | |
1008 | If LENGTH_RETURN is not NULL, return in it the number of bytes read. | |
1009 | No bytes will be read at address END or beyond. */ | |
1010 | ||
1011 | bfd_vma | |
1012 | safe_read_leb128 (bfd *abfd ATTRIBUTE_UNUSED, | |
1013 | bfd_byte *data, | |
1014 | unsigned int *length_return, | |
1015 | bfd_boolean sign, | |
1016 | const bfd_byte * const end) | |
1017 | { | |
1018 | bfd_vma result = 0; | |
1019 | unsigned int num_read = 0; | |
1020 | unsigned int shift = 0; | |
1021 | unsigned char byte = 0; | |
1022 | ||
1023 | while (data < end) | |
1024 | { | |
1025 | byte = bfd_get_8 (abfd, data); | |
1026 | data++; | |
1027 | num_read++; | |
1028 | ||
1029 | result |= ((bfd_vma) (byte & 0x7f)) << shift; | |
1030 | ||
1031 | shift += 7; | |
1032 | if ((byte & 0x80) == 0) | |
1033 | break; | |
1034 | } | |
1035 | ||
1036 | if (length_return != NULL) | |
1037 | *length_return = num_read; | |
1038 | ||
1039 | if (sign && (shift < 8 * sizeof (result)) && (byte & 0x40)) | |
1040 | result |= (bfd_vma) -1 << shift; | |
1041 | ||
1042 | return result; | |
1043 | } | |
1044 | ||
c0c28ab8 L |
1045 | /* Helper function for reading sleb128 encoded data. */ |
1046 | ||
1047 | bfd_signed_vma | |
1048 | read_signed_leb128 (bfd *abfd ATTRIBUTE_UNUSED, | |
f075ee0c AM |
1049 | bfd_byte *buf, |
1050 | unsigned int *bytes_read_ptr) | |
c0c28ab8 L |
1051 | { |
1052 | bfd_vma result; | |
f075ee0c AM |
1053 | unsigned int shift; |
1054 | unsigned int num_read; | |
c0c28ab8 L |
1055 | unsigned char byte; |
1056 | ||
1057 | result = 0; | |
1058 | shift = 0; | |
1059 | num_read = 0; | |
1060 | do | |
1061 | { | |
f075ee0c | 1062 | byte = bfd_get_8 (abfd, buf); |
c0c28ab8 L |
1063 | buf ++; |
1064 | num_read ++; | |
1065 | result |= (((bfd_vma) byte & 0x7f) << shift); | |
1066 | shift += 7; | |
1067 | } | |
1068 | while (byte & 0x80); | |
f075ee0c | 1069 | if (shift < 8 * sizeof (result) && (byte & 0x40)) |
c0c28ab8 L |
1070 | result |= (((bfd_vma) -1) << shift); |
1071 | *bytes_read_ptr = num_read; | |
1072 | return result; | |
1073 | } | |
5420f73d | 1074 | |
ccd2ec6a L |
1075 | bfd_boolean |
1076 | _bfd_generic_init_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, | |
1077 | asection *isec ATTRIBUTE_UNUSED, | |
1078 | bfd *obfd ATTRIBUTE_UNUSED, | |
1079 | asection *osec ATTRIBUTE_UNUSED, | |
1080 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED) | |
1081 | { | |
1082 | return TRUE; | |
1083 | } |