/src/binutils-gdb/bfd/elf-m10300.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* Matsushita 10300 specific support for 32-bit ELF |
2 | | Copyright (C) 1996-2023 Free Software Foundation, Inc. |
3 | | |
4 | | This file is part of BFD, the Binary File Descriptor library. |
5 | | |
6 | | This program is free software; you can redistribute it and/or modify |
7 | | it under the terms of the GNU General Public License as published by |
8 | | the Free Software Foundation; either version 3 of the License, or |
9 | | (at your option) any later version. |
10 | | |
11 | | This program is distributed in the hope that it will be useful, |
12 | | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | | GNU General Public License for more details. |
15 | | |
16 | | You should have received a copy of the GNU General Public License |
17 | | along with this program; if not, write to the Free Software |
18 | | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | | MA 02110-1301, USA. */ |
20 | | |
21 | | #include "sysdep.h" |
22 | | #include "bfd.h" |
23 | | #include "libbfd.h" |
24 | | #include "elf-bfd.h" |
25 | | #include "elf/mn10300.h" |
26 | | #include "libiberty.h" |
27 | | |
28 | | /* The mn10300 linker needs to keep track of the number of relocs that |
29 | | it decides to copy in check_relocs for each symbol. This is so |
30 | | that it can discard PC relative relocs if it doesn't need them when |
31 | | linking with -Bsymbolic. We store the information in a field |
32 | | extending the regular ELF linker hash table. */ |
33 | | |
34 | | struct elf32_mn10300_link_hash_entry |
35 | | { |
36 | | /* The basic elf link hash table entry. */ |
37 | | struct elf_link_hash_entry root; |
38 | | |
39 | | /* For function symbols, the number of times this function is |
40 | | called directly (ie by name). */ |
41 | | unsigned int direct_calls; |
42 | | |
43 | | /* For function symbols, the size of this function's stack |
44 | | (if <= 255 bytes). We stuff this into "call" instructions |
45 | | to this target when it's valid and profitable to do so. |
46 | | |
47 | | This does not include stack allocated by movm! */ |
48 | | unsigned char stack_size; |
49 | | |
50 | | /* For function symbols, arguments (if any) for movm instruction |
51 | | in the prologue. We stuff this value into "call" instructions |
52 | | to the target when it's valid and profitable to do so. */ |
53 | | unsigned char movm_args; |
54 | | |
55 | | /* For function symbols, the amount of stack space that would be allocated |
56 | | by the movm instruction. This is redundant with movm_args, but we |
57 | | add it to the hash table to avoid computing it over and over. */ |
58 | | unsigned char movm_stack_size; |
59 | | |
60 | | /* When set, convert all "call" instructions to this target into "calls" |
61 | | instructions. */ |
62 | 0 | #define MN10300_CONVERT_CALL_TO_CALLS 0x1 |
63 | | |
64 | | /* Used to mark functions which have had redundant parts of their |
65 | | prologue deleted. */ |
66 | 0 | #define MN10300_DELETED_PROLOGUE_BYTES 0x2 |
67 | | unsigned char flags; |
68 | | |
69 | | /* Calculated value. */ |
70 | | bfd_vma value; |
71 | | |
72 | 0 | #define GOT_UNKNOWN 0 |
73 | 0 | #define GOT_NORMAL 1 |
74 | 0 | #define GOT_TLS_GD 2 |
75 | 0 | #define GOT_TLS_LD 3 |
76 | 0 | #define GOT_TLS_IE 4 |
77 | | /* Used to distinguish GOT entries for TLS types from normal GOT entries. */ |
78 | | unsigned char tls_type; |
79 | | }; |
80 | | |
81 | | /* We derive a hash table from the main elf linker hash table so |
82 | | we can store state variables and a secondary hash table without |
83 | | resorting to global variables. */ |
84 | | struct elf32_mn10300_link_hash_table |
85 | | { |
86 | | /* The main hash table. */ |
87 | | struct elf_link_hash_table root; |
88 | | |
89 | | /* A hash table for static functions. We could derive a new hash table |
90 | | instead of using the full elf32_mn10300_link_hash_table if we wanted |
91 | | to save some memory. */ |
92 | | struct elf32_mn10300_link_hash_table *static_hash_table; |
93 | | |
94 | | /* Random linker state flags. */ |
95 | 0 | #define MN10300_HASH_ENTRIES_INITIALIZED 0x1 |
96 | | char flags; |
97 | | struct |
98 | | { |
99 | | bfd_signed_vma refcount; |
100 | | bfd_vma offset; |
101 | | char got_allocated; |
102 | | char rel_emitted; |
103 | | } tls_ldm_got; |
104 | | }; |
105 | | |
106 | 0 | #define elf_mn10300_hash_entry(ent) ((struct elf32_mn10300_link_hash_entry *)(ent)) |
107 | | |
108 | | struct elf_mn10300_obj_tdata |
109 | | { |
110 | | struct elf_obj_tdata root; |
111 | | |
112 | | /* tls_type for each local got entry. */ |
113 | | char * local_got_tls_type; |
114 | | }; |
115 | | |
116 | | #define elf_mn10300_tdata(abfd) \ |
117 | 0 | ((struct elf_mn10300_obj_tdata *) (abfd)->tdata.any) |
118 | | |
119 | | #define elf_mn10300_local_got_tls_type(abfd) \ |
120 | 0 | (elf_mn10300_tdata (abfd)->local_got_tls_type) |
121 | | |
122 | | #ifndef streq |
123 | 0 | #define streq(a, b) (strcmp ((a),(b)) == 0) |
124 | | #endif |
125 | | |
126 | | /* For MN10300 linker hash table. */ |
127 | | |
128 | | /* Get the MN10300 ELF linker hash table from a link_info structure. */ |
129 | | |
130 | | #define elf32_mn10300_hash_table(p) \ |
131 | 0 | ((is_elf_hash_table ((p)->hash) \ |
132 | 0 | && elf_hash_table_id (elf_hash_table (p)) == MN10300_ELF_DATA) \ |
133 | 0 | ? (struct elf32_mn10300_link_hash_table *) (p)->hash : NULL) |
134 | | |
135 | | #define elf32_mn10300_link_hash_traverse(table, func, info) \ |
136 | 0 | (elf_link_hash_traverse \ |
137 | 0 | (&(table)->root, \ |
138 | 0 | (bool (*) (struct elf_link_hash_entry *, void *)) (func), \ |
139 | 0 | (info))) |
140 | | |
141 | | static reloc_howto_type elf_mn10300_howto_table[] = |
142 | | { |
143 | | /* Dummy relocation. Does nothing. */ |
144 | | HOWTO (R_MN10300_NONE, |
145 | | 0, |
146 | | 0, |
147 | | 0, |
148 | | false, |
149 | | 0, |
150 | | complain_overflow_dont, |
151 | | bfd_elf_generic_reloc, |
152 | | "R_MN10300_NONE", |
153 | | false, |
154 | | 0, |
155 | | 0, |
156 | | false), |
157 | | /* Standard 32 bit reloc. */ |
158 | | HOWTO (R_MN10300_32, |
159 | | 0, |
160 | | 4, |
161 | | 32, |
162 | | false, |
163 | | 0, |
164 | | complain_overflow_bitfield, |
165 | | bfd_elf_generic_reloc, |
166 | | "R_MN10300_32", |
167 | | false, |
168 | | 0xffffffff, |
169 | | 0xffffffff, |
170 | | false), |
171 | | /* Standard 16 bit reloc. */ |
172 | | HOWTO (R_MN10300_16, |
173 | | 0, |
174 | | 2, |
175 | | 16, |
176 | | false, |
177 | | 0, |
178 | | complain_overflow_bitfield, |
179 | | bfd_elf_generic_reloc, |
180 | | "R_MN10300_16", |
181 | | false, |
182 | | 0xffff, |
183 | | 0xffff, |
184 | | false), |
185 | | /* Standard 8 bit reloc. */ |
186 | | HOWTO (R_MN10300_8, |
187 | | 0, |
188 | | 1, |
189 | | 8, |
190 | | false, |
191 | | 0, |
192 | | complain_overflow_bitfield, |
193 | | bfd_elf_generic_reloc, |
194 | | "R_MN10300_8", |
195 | | false, |
196 | | 0xff, |
197 | | 0xff, |
198 | | false), |
199 | | /* Standard 32bit pc-relative reloc. */ |
200 | | HOWTO (R_MN10300_PCREL32, |
201 | | 0, |
202 | | 4, |
203 | | 32, |
204 | | true, |
205 | | 0, |
206 | | complain_overflow_bitfield, |
207 | | bfd_elf_generic_reloc, |
208 | | "R_MN10300_PCREL32", |
209 | | false, |
210 | | 0xffffffff, |
211 | | 0xffffffff, |
212 | | true), |
213 | | /* Standard 16bit pc-relative reloc. */ |
214 | | HOWTO (R_MN10300_PCREL16, |
215 | | 0, |
216 | | 2, |
217 | | 16, |
218 | | true, |
219 | | 0, |
220 | | complain_overflow_bitfield, |
221 | | bfd_elf_generic_reloc, |
222 | | "R_MN10300_PCREL16", |
223 | | false, |
224 | | 0xffff, |
225 | | 0xffff, |
226 | | true), |
227 | | /* Standard 8 pc-relative reloc. */ |
228 | | HOWTO (R_MN10300_PCREL8, |
229 | | 0, |
230 | | 1, |
231 | | 8, |
232 | | true, |
233 | | 0, |
234 | | complain_overflow_bitfield, |
235 | | bfd_elf_generic_reloc, |
236 | | "R_MN10300_PCREL8", |
237 | | false, |
238 | | 0xff, |
239 | | 0xff, |
240 | | true), |
241 | | |
242 | | /* GNU extension to record C++ vtable hierarchy. */ |
243 | | HOWTO (R_MN10300_GNU_VTINHERIT, /* type */ |
244 | | 0, /* rightshift */ |
245 | | 0, /* size */ |
246 | | 0, /* bitsize */ |
247 | | false, /* pc_relative */ |
248 | | 0, /* bitpos */ |
249 | | complain_overflow_dont, /* complain_on_overflow */ |
250 | | NULL, /* special_function */ |
251 | | "R_MN10300_GNU_VTINHERIT", /* name */ |
252 | | false, /* partial_inplace */ |
253 | | 0, /* src_mask */ |
254 | | 0, /* dst_mask */ |
255 | | false), /* pcrel_offset */ |
256 | | |
257 | | /* GNU extension to record C++ vtable member usage */ |
258 | | HOWTO (R_MN10300_GNU_VTENTRY, /* type */ |
259 | | 0, /* rightshift */ |
260 | | 0, /* size */ |
261 | | 0, /* bitsize */ |
262 | | false, /* pc_relative */ |
263 | | 0, /* bitpos */ |
264 | | complain_overflow_dont, /* complain_on_overflow */ |
265 | | NULL, /* special_function */ |
266 | | "R_MN10300_GNU_VTENTRY", /* name */ |
267 | | false, /* partial_inplace */ |
268 | | 0, /* src_mask */ |
269 | | 0, /* dst_mask */ |
270 | | false), /* pcrel_offset */ |
271 | | |
272 | | /* Standard 24 bit reloc. */ |
273 | | HOWTO (R_MN10300_24, |
274 | | 0, |
275 | | 4, |
276 | | 24, |
277 | | false, |
278 | | 0, |
279 | | complain_overflow_bitfield, |
280 | | bfd_elf_generic_reloc, |
281 | | "R_MN10300_24", |
282 | | false, |
283 | | 0xffffff, |
284 | | 0xffffff, |
285 | | false), |
286 | | HOWTO (R_MN10300_GOTPC32, /* type */ |
287 | | 0, /* rightshift */ |
288 | | 4, /* size */ |
289 | | 32, /* bitsize */ |
290 | | true, /* pc_relative */ |
291 | | 0, /* bitpos */ |
292 | | complain_overflow_bitfield, /* complain_on_overflow */ |
293 | | bfd_elf_generic_reloc, /* */ |
294 | | "R_MN10300_GOTPC32", /* name */ |
295 | | false, /* partial_inplace */ |
296 | | 0xffffffff, /* src_mask */ |
297 | | 0xffffffff, /* dst_mask */ |
298 | | true), /* pcrel_offset */ |
299 | | |
300 | | HOWTO (R_MN10300_GOTPC16, /* type */ |
301 | | 0, /* rightshift */ |
302 | | 2, /* size */ |
303 | | 16, /* bitsize */ |
304 | | true, /* pc_relative */ |
305 | | 0, /* bitpos */ |
306 | | complain_overflow_bitfield, /* complain_on_overflow */ |
307 | | bfd_elf_generic_reloc, /* */ |
308 | | "R_MN10300_GOTPC16", /* name */ |
309 | | false, /* partial_inplace */ |
310 | | 0xffff, /* src_mask */ |
311 | | 0xffff, /* dst_mask */ |
312 | | true), /* pcrel_offset */ |
313 | | |
314 | | HOWTO (R_MN10300_GOTOFF32, /* type */ |
315 | | 0, /* rightshift */ |
316 | | 4, /* size */ |
317 | | 32, /* bitsize */ |
318 | | false, /* pc_relative */ |
319 | | 0, /* bitpos */ |
320 | | complain_overflow_bitfield, /* complain_on_overflow */ |
321 | | bfd_elf_generic_reloc, /* */ |
322 | | "R_MN10300_GOTOFF32", /* name */ |
323 | | false, /* partial_inplace */ |
324 | | 0xffffffff, /* src_mask */ |
325 | | 0xffffffff, /* dst_mask */ |
326 | | false), /* pcrel_offset */ |
327 | | |
328 | | HOWTO (R_MN10300_GOTOFF24, /* type */ |
329 | | 0, /* rightshift */ |
330 | | 4, /* size */ |
331 | | 24, /* bitsize */ |
332 | | false, /* pc_relative */ |
333 | | 0, /* bitpos */ |
334 | | complain_overflow_bitfield, /* complain_on_overflow */ |
335 | | bfd_elf_generic_reloc, /* */ |
336 | | "R_MN10300_GOTOFF24", /* name */ |
337 | | false, /* partial_inplace */ |
338 | | 0xffffff, /* src_mask */ |
339 | | 0xffffff, /* dst_mask */ |
340 | | false), /* pcrel_offset */ |
341 | | |
342 | | HOWTO (R_MN10300_GOTOFF16, /* type */ |
343 | | 0, /* rightshift */ |
344 | | 2, /* size */ |
345 | | 16, /* bitsize */ |
346 | | false, /* pc_relative */ |
347 | | 0, /* bitpos */ |
348 | | complain_overflow_bitfield, /* complain_on_overflow */ |
349 | | bfd_elf_generic_reloc, /* */ |
350 | | "R_MN10300_GOTOFF16", /* name */ |
351 | | false, /* partial_inplace */ |
352 | | 0xffff, /* src_mask */ |
353 | | 0xffff, /* dst_mask */ |
354 | | false), /* pcrel_offset */ |
355 | | |
356 | | HOWTO (R_MN10300_PLT32, /* type */ |
357 | | 0, /* rightshift */ |
358 | | 4, /* size */ |
359 | | 32, /* bitsize */ |
360 | | true, /* pc_relative */ |
361 | | 0, /* bitpos */ |
362 | | complain_overflow_bitfield, /* complain_on_overflow */ |
363 | | bfd_elf_generic_reloc, /* */ |
364 | | "R_MN10300_PLT32", /* name */ |
365 | | false, /* partial_inplace */ |
366 | | 0xffffffff, /* src_mask */ |
367 | | 0xffffffff, /* dst_mask */ |
368 | | true), /* pcrel_offset */ |
369 | | |
370 | | HOWTO (R_MN10300_PLT16, /* type */ |
371 | | 0, /* rightshift */ |
372 | | 2, /* size */ |
373 | | 16, /* bitsize */ |
374 | | true, /* pc_relative */ |
375 | | 0, /* bitpos */ |
376 | | complain_overflow_bitfield, /* complain_on_overflow */ |
377 | | bfd_elf_generic_reloc, /* */ |
378 | | "R_MN10300_PLT16", /* name */ |
379 | | false, /* partial_inplace */ |
380 | | 0xffff, /* src_mask */ |
381 | | 0xffff, /* dst_mask */ |
382 | | true), /* pcrel_offset */ |
383 | | |
384 | | HOWTO (R_MN10300_GOT32, /* type */ |
385 | | 0, /* rightshift */ |
386 | | 4, /* size */ |
387 | | 32, /* bitsize */ |
388 | | false, /* pc_relative */ |
389 | | 0, /* bitpos */ |
390 | | complain_overflow_bitfield, /* complain_on_overflow */ |
391 | | bfd_elf_generic_reloc, /* */ |
392 | | "R_MN10300_GOT32", /* name */ |
393 | | false, /* partial_inplace */ |
394 | | 0xffffffff, /* src_mask */ |
395 | | 0xffffffff, /* dst_mask */ |
396 | | false), /* pcrel_offset */ |
397 | | |
398 | | HOWTO (R_MN10300_GOT24, /* type */ |
399 | | 0, /* rightshift */ |
400 | | 4, /* size */ |
401 | | 24, /* bitsize */ |
402 | | false, /* pc_relative */ |
403 | | 0, /* bitpos */ |
404 | | complain_overflow_bitfield, /* complain_on_overflow */ |
405 | | bfd_elf_generic_reloc, /* */ |
406 | | "R_MN10300_GOT24", /* name */ |
407 | | false, /* partial_inplace */ |
408 | | 0xffffffff, /* src_mask */ |
409 | | 0xffffffff, /* dst_mask */ |
410 | | false), /* pcrel_offset */ |
411 | | |
412 | | HOWTO (R_MN10300_GOT16, /* type */ |
413 | | 0, /* rightshift */ |
414 | | 2, /* size */ |
415 | | 16, /* bitsize */ |
416 | | false, /* pc_relative */ |
417 | | 0, /* bitpos */ |
418 | | complain_overflow_bitfield, /* complain_on_overflow */ |
419 | | bfd_elf_generic_reloc, /* */ |
420 | | "R_MN10300_GOT16", /* name */ |
421 | | false, /* partial_inplace */ |
422 | | 0xffffffff, /* src_mask */ |
423 | | 0xffffffff, /* dst_mask */ |
424 | | false), /* pcrel_offset */ |
425 | | |
426 | | HOWTO (R_MN10300_COPY, /* type */ |
427 | | 0, /* rightshift */ |
428 | | 4, /* size */ |
429 | | 32, /* bitsize */ |
430 | | false, /* pc_relative */ |
431 | | 0, /* bitpos */ |
432 | | complain_overflow_bitfield, /* complain_on_overflow */ |
433 | | bfd_elf_generic_reloc, /* */ |
434 | | "R_MN10300_COPY", /* name */ |
435 | | false, /* partial_inplace */ |
436 | | 0xffffffff, /* src_mask */ |
437 | | 0xffffffff, /* dst_mask */ |
438 | | false), /* pcrel_offset */ |
439 | | |
440 | | HOWTO (R_MN10300_GLOB_DAT, /* type */ |
441 | | 0, /* rightshift */ |
442 | | 4, /* size */ |
443 | | 32, /* bitsize */ |
444 | | false, /* pc_relative */ |
445 | | 0, /* bitpos */ |
446 | | complain_overflow_bitfield, /* complain_on_overflow */ |
447 | | bfd_elf_generic_reloc, /* */ |
448 | | "R_MN10300_GLOB_DAT", /* name */ |
449 | | false, /* partial_inplace */ |
450 | | 0xffffffff, /* src_mask */ |
451 | | 0xffffffff, /* dst_mask */ |
452 | | false), /* pcrel_offset */ |
453 | | |
454 | | HOWTO (R_MN10300_JMP_SLOT, /* type */ |
455 | | 0, /* rightshift */ |
456 | | 4, /* size */ |
457 | | 32, /* bitsize */ |
458 | | false, /* pc_relative */ |
459 | | 0, /* bitpos */ |
460 | | complain_overflow_bitfield, /* complain_on_overflow */ |
461 | | bfd_elf_generic_reloc, /* */ |
462 | | "R_MN10300_JMP_SLOT", /* name */ |
463 | | false, /* partial_inplace */ |
464 | | 0xffffffff, /* src_mask */ |
465 | | 0xffffffff, /* dst_mask */ |
466 | | false), /* pcrel_offset */ |
467 | | |
468 | | HOWTO (R_MN10300_RELATIVE, /* type */ |
469 | | 0, /* rightshift */ |
470 | | 4, /* size */ |
471 | | 32, /* bitsize */ |
472 | | false, /* pc_relative */ |
473 | | 0, /* bitpos */ |
474 | | complain_overflow_bitfield, /* complain_on_overflow */ |
475 | | bfd_elf_generic_reloc, /* */ |
476 | | "R_MN10300_RELATIVE", /* name */ |
477 | | false, /* partial_inplace */ |
478 | | 0xffffffff, /* src_mask */ |
479 | | 0xffffffff, /* dst_mask */ |
480 | | false), /* pcrel_offset */ |
481 | | |
482 | | HOWTO (R_MN10300_TLS_GD, /* type */ |
483 | | 0, /* rightshift */ |
484 | | 4, /* size */ |
485 | | 32, /* bitsize */ |
486 | | false, /* pc_relative */ |
487 | | 0, /* bitpos */ |
488 | | complain_overflow_bitfield, /* complain_on_overflow */ |
489 | | bfd_elf_generic_reloc, /* */ |
490 | | "R_MN10300_TLS_GD", /* name */ |
491 | | false, /* partial_inplace */ |
492 | | 0xffffffff, /* src_mask */ |
493 | | 0xffffffff, /* dst_mask */ |
494 | | false), /* pcrel_offset */ |
495 | | |
496 | | HOWTO (R_MN10300_TLS_LD, /* type */ |
497 | | 0, /* rightshift */ |
498 | | 4, /* size */ |
499 | | 32, /* bitsize */ |
500 | | false, /* pc_relative */ |
501 | | 0, /* bitpos */ |
502 | | complain_overflow_bitfield, /* complain_on_overflow */ |
503 | | bfd_elf_generic_reloc, /* */ |
504 | | "R_MN10300_TLS_LD", /* name */ |
505 | | false, /* partial_inplace */ |
506 | | 0xffffffff, /* src_mask */ |
507 | | 0xffffffff, /* dst_mask */ |
508 | | false), /* pcrel_offset */ |
509 | | |
510 | | HOWTO (R_MN10300_TLS_LDO, /* type */ |
511 | | 0, /* rightshift */ |
512 | | 4, /* size */ |
513 | | 32, /* bitsize */ |
514 | | false, /* pc_relative */ |
515 | | 0, /* bitpos */ |
516 | | complain_overflow_bitfield, /* complain_on_overflow */ |
517 | | bfd_elf_generic_reloc, /* */ |
518 | | "R_MN10300_TLS_LDO", /* name */ |
519 | | false, /* partial_inplace */ |
520 | | 0xffffffff, /* src_mask */ |
521 | | 0xffffffff, /* dst_mask */ |
522 | | false), /* pcrel_offset */ |
523 | | |
524 | | HOWTO (R_MN10300_TLS_GOTIE, /* type */ |
525 | | 0, /* rightshift */ |
526 | | 4, /* size */ |
527 | | 32, /* bitsize */ |
528 | | false, /* pc_relative */ |
529 | | 0, /* bitpos */ |
530 | | complain_overflow_bitfield, /* complain_on_overflow */ |
531 | | bfd_elf_generic_reloc, /* */ |
532 | | "R_MN10300_TLS_GOTIE", /* name */ |
533 | | false, /* partial_inplace */ |
534 | | 0xffffffff, /* src_mask */ |
535 | | 0xffffffff, /* dst_mask */ |
536 | | false), /* pcrel_offset */ |
537 | | |
538 | | HOWTO (R_MN10300_TLS_IE, /* type */ |
539 | | 0, /* rightshift */ |
540 | | 4, /* size */ |
541 | | 32, /* bitsize */ |
542 | | false, /* pc_relative */ |
543 | | 0, /* bitpos */ |
544 | | complain_overflow_bitfield, /* complain_on_overflow */ |
545 | | bfd_elf_generic_reloc, /* */ |
546 | | "R_MN10300_TLS_IE", /* name */ |
547 | | false, /* partial_inplace */ |
548 | | 0xffffffff, /* src_mask */ |
549 | | 0xffffffff, /* dst_mask */ |
550 | | false), /* pcrel_offset */ |
551 | | |
552 | | HOWTO (R_MN10300_TLS_LE, /* type */ |
553 | | 0, /* rightshift */ |
554 | | 4, /* size */ |
555 | | 32, /* bitsize */ |
556 | | false, /* pc_relative */ |
557 | | 0, /* bitpos */ |
558 | | complain_overflow_bitfield, /* complain_on_overflow */ |
559 | | bfd_elf_generic_reloc, /* */ |
560 | | "R_MN10300_TLS_LE", /* name */ |
561 | | false, /* partial_inplace */ |
562 | | 0xffffffff, /* src_mask */ |
563 | | 0xffffffff, /* dst_mask */ |
564 | | false), /* pcrel_offset */ |
565 | | |
566 | | HOWTO (R_MN10300_TLS_DTPMOD, /* type */ |
567 | | 0, /* rightshift */ |
568 | | 4, /* size */ |
569 | | 32, /* bitsize */ |
570 | | false, /* pc_relative */ |
571 | | 0, /* bitpos */ |
572 | | complain_overflow_bitfield, /* complain_on_overflow */ |
573 | | bfd_elf_generic_reloc, /* */ |
574 | | "R_MN10300_TLS_DTPMOD", /* name */ |
575 | | false, /* partial_inplace */ |
576 | | 0xffffffff, /* src_mask */ |
577 | | 0xffffffff, /* dst_mask */ |
578 | | false), /* pcrel_offset */ |
579 | | |
580 | | HOWTO (R_MN10300_TLS_DTPOFF, /* type */ |
581 | | 0, /* rightshift */ |
582 | | 4, /* size */ |
583 | | 32, /* bitsize */ |
584 | | false, /* pc_relative */ |
585 | | 0, /* bitpos */ |
586 | | complain_overflow_bitfield, /* complain_on_overflow */ |
587 | | bfd_elf_generic_reloc, /* */ |
588 | | "R_MN10300_TLS_DTPOFF", /* name */ |
589 | | false, /* partial_inplace */ |
590 | | 0xffffffff, /* src_mask */ |
591 | | 0xffffffff, /* dst_mask */ |
592 | | false), /* pcrel_offset */ |
593 | | |
594 | | HOWTO (R_MN10300_TLS_TPOFF, /* type */ |
595 | | 0, /* rightshift */ |
596 | | 4, /* size */ |
597 | | 32, /* bitsize */ |
598 | | false, /* pc_relative */ |
599 | | 0, /* bitpos */ |
600 | | complain_overflow_bitfield, /* complain_on_overflow */ |
601 | | bfd_elf_generic_reloc, /* */ |
602 | | "R_MN10300_TLS_TPOFF", /* name */ |
603 | | false, /* partial_inplace */ |
604 | | 0xffffffff, /* src_mask */ |
605 | | 0xffffffff, /* dst_mask */ |
606 | | false), /* pcrel_offset */ |
607 | | |
608 | | HOWTO (R_MN10300_SYM_DIFF, /* type */ |
609 | | 0, /* rightshift */ |
610 | | 4, /* size */ |
611 | | 32, /* bitsize */ |
612 | | false, /* pc_relative */ |
613 | | 0, /* bitpos */ |
614 | | complain_overflow_dont,/* complain_on_overflow */ |
615 | | NULL, /* special handler. */ |
616 | | "R_MN10300_SYM_DIFF", /* name */ |
617 | | false, /* partial_inplace */ |
618 | | 0xffffffff, /* src_mask */ |
619 | | 0xffffffff, /* dst_mask */ |
620 | | false), /* pcrel_offset */ |
621 | | |
622 | | HOWTO (R_MN10300_ALIGN, /* type */ |
623 | | 0, /* rightshift */ |
624 | | 1, /* size */ |
625 | | 32, /* bitsize */ |
626 | | false, /* pc_relative */ |
627 | | 0, /* bitpos */ |
628 | | complain_overflow_dont,/* complain_on_overflow */ |
629 | | NULL, /* special handler. */ |
630 | | "R_MN10300_ALIGN", /* name */ |
631 | | false, /* partial_inplace */ |
632 | | 0, /* src_mask */ |
633 | | 0, /* dst_mask */ |
634 | | false) /* pcrel_offset */ |
635 | | }; |
636 | | |
637 | | struct mn10300_reloc_map |
638 | | { |
639 | | bfd_reloc_code_real_type bfd_reloc_val; |
640 | | unsigned char elf_reloc_val; |
641 | | }; |
642 | | |
643 | | static const struct mn10300_reloc_map mn10300_reloc_map[] = |
644 | | { |
645 | | { BFD_RELOC_NONE, R_MN10300_NONE, }, |
646 | | { BFD_RELOC_32, R_MN10300_32, }, |
647 | | { BFD_RELOC_16, R_MN10300_16, }, |
648 | | { BFD_RELOC_8, R_MN10300_8, }, |
649 | | { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, }, |
650 | | { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, }, |
651 | | { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, }, |
652 | | { BFD_RELOC_24, R_MN10300_24, }, |
653 | | { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT }, |
654 | | { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY }, |
655 | | { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 }, |
656 | | { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 }, |
657 | | { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 }, |
658 | | { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 }, |
659 | | { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 }, |
660 | | { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 }, |
661 | | { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 }, |
662 | | { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 }, |
663 | | { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 }, |
664 | | { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 }, |
665 | | { BFD_RELOC_MN10300_COPY, R_MN10300_COPY }, |
666 | | { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT }, |
667 | | { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT }, |
668 | | { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE }, |
669 | | { BFD_RELOC_MN10300_TLS_GD, R_MN10300_TLS_GD }, |
670 | | { BFD_RELOC_MN10300_TLS_LD, R_MN10300_TLS_LD }, |
671 | | { BFD_RELOC_MN10300_TLS_LDO, R_MN10300_TLS_LDO }, |
672 | | { BFD_RELOC_MN10300_TLS_GOTIE, R_MN10300_TLS_GOTIE }, |
673 | | { BFD_RELOC_MN10300_TLS_IE, R_MN10300_TLS_IE }, |
674 | | { BFD_RELOC_MN10300_TLS_LE, R_MN10300_TLS_LE }, |
675 | | { BFD_RELOC_MN10300_TLS_DTPMOD, R_MN10300_TLS_DTPMOD }, |
676 | | { BFD_RELOC_MN10300_TLS_DTPOFF, R_MN10300_TLS_DTPOFF }, |
677 | | { BFD_RELOC_MN10300_TLS_TPOFF, R_MN10300_TLS_TPOFF }, |
678 | | { BFD_RELOC_MN10300_SYM_DIFF, R_MN10300_SYM_DIFF }, |
679 | | { BFD_RELOC_MN10300_ALIGN, R_MN10300_ALIGN } |
680 | | }; |
681 | | |
682 | | /* Create the GOT section. */ |
683 | | |
684 | | static bool |
685 | | _bfd_mn10300_elf_create_got_section (bfd * abfd, |
686 | | struct bfd_link_info * info) |
687 | 0 | { |
688 | 0 | flagword flags; |
689 | 0 | flagword pltflags; |
690 | 0 | asection * s; |
691 | 0 | struct elf_link_hash_entry * h; |
692 | 0 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
693 | 0 | struct elf_link_hash_table *htab; |
694 | 0 | int ptralign; |
695 | | |
696 | | /* This function may be called more than once. */ |
697 | 0 | htab = elf_hash_table (info); |
698 | 0 | if (htab->sgot != NULL) |
699 | 0 | return true; |
700 | | |
701 | 0 | switch (bed->s->arch_size) |
702 | 0 | { |
703 | 0 | case 32: |
704 | 0 | ptralign = 2; |
705 | 0 | break; |
706 | | |
707 | 0 | case 64: |
708 | 0 | ptralign = 3; |
709 | 0 | break; |
710 | | |
711 | 0 | default: |
712 | 0 | bfd_set_error (bfd_error_bad_value); |
713 | 0 | return false; |
714 | 0 | } |
715 | | |
716 | 0 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
717 | 0 | | SEC_LINKER_CREATED); |
718 | |
|
719 | 0 | pltflags = flags; |
720 | 0 | pltflags |= SEC_CODE; |
721 | 0 | if (bed->plt_not_loaded) |
722 | 0 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); |
723 | 0 | if (bed->plt_readonly) |
724 | 0 | pltflags |= SEC_READONLY; |
725 | |
|
726 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); |
727 | 0 | htab->splt = s; |
728 | 0 | if (s == NULL |
729 | 0 | || !bfd_set_section_alignment (s, bed->plt_alignment)) |
730 | 0 | return false; |
731 | | |
732 | | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
733 | | .plt section. */ |
734 | 0 | if (bed->want_plt_sym) |
735 | 0 | { |
736 | 0 | h = _bfd_elf_define_linkage_sym (abfd, info, s, |
737 | 0 | "_PROCEDURE_LINKAGE_TABLE_"); |
738 | 0 | htab->hplt = h; |
739 | 0 | if (h == NULL) |
740 | 0 | return false; |
741 | 0 | } |
742 | | |
743 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
744 | 0 | htab->sgot = s; |
745 | 0 | if (s == NULL |
746 | 0 | || !bfd_set_section_alignment (s, ptralign)) |
747 | 0 | return false; |
748 | | |
749 | 0 | if (bed->want_got_plt) |
750 | 0 | { |
751 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); |
752 | 0 | htab->sgotplt = s; |
753 | 0 | if (s == NULL |
754 | 0 | || !bfd_set_section_alignment (s, ptralign)) |
755 | 0 | return false; |
756 | 0 | } |
757 | | |
758 | | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got |
759 | | (or .got.plt) section. We don't do this in the linker script |
760 | | because we don't want to define the symbol if we are not creating |
761 | | a global offset table. */ |
762 | 0 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); |
763 | 0 | htab->hgot = h; |
764 | 0 | if (h == NULL) |
765 | 0 | return false; |
766 | | |
767 | | /* The first bit of the global offset table is the header. */ |
768 | 0 | s->size += bed->got_header_size; |
769 | |
|
770 | 0 | return true; |
771 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_elf_create_got_section Unexecuted instantiation: elf32-am33lin.c:_bfd_mn10300_elf_create_got_section |
772 | | |
773 | | static reloc_howto_type * |
774 | | bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
775 | | bfd_reloc_code_real_type code) |
776 | 0 | { |
777 | 0 | unsigned int i; |
778 | |
|
779 | 0 | for (i = ARRAY_SIZE (mn10300_reloc_map); i--;) |
780 | 0 | if (mn10300_reloc_map[i].bfd_reloc_val == code) |
781 | 0 | return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val]; |
782 | | |
783 | 0 | return NULL; |
784 | 0 | } Unexecuted instantiation: elf-m10300.c:bfd_elf32_bfd_reloc_type_lookup Unexecuted instantiation: elf32-am33lin.c:bfd_elf32_bfd_reloc_type_lookup |
785 | | |
786 | | static reloc_howto_type * |
787 | | bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
788 | | const char *r_name) |
789 | 0 | { |
790 | 0 | unsigned int i; |
791 | |
|
792 | 0 | for (i = ARRAY_SIZE (elf_mn10300_howto_table); i--;) |
793 | 0 | if (elf_mn10300_howto_table[i].name != NULL |
794 | 0 | && strcasecmp (elf_mn10300_howto_table[i].name, r_name) == 0) |
795 | 0 | return elf_mn10300_howto_table + i; |
796 | | |
797 | 0 | return NULL; |
798 | 0 | } Unexecuted instantiation: elf-m10300.c:bfd_elf32_bfd_reloc_name_lookup Unexecuted instantiation: elf32-am33lin.c:bfd_elf32_bfd_reloc_name_lookup |
799 | | |
800 | | /* Set the howto pointer for an MN10300 ELF reloc. */ |
801 | | |
802 | | static bool |
803 | | mn10300_info_to_howto (bfd *abfd, |
804 | | arelent *cache_ptr, |
805 | | Elf_Internal_Rela *dst) |
806 | 0 | { |
807 | 0 | unsigned int r_type; |
808 | |
|
809 | 0 | r_type = ELF32_R_TYPE (dst->r_info); |
810 | 0 | if (r_type >= R_MN10300_MAX) |
811 | 0 | { |
812 | | /* xgettext:c-format */ |
813 | 0 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
814 | 0 | abfd, r_type); |
815 | 0 | bfd_set_error (bfd_error_bad_value); |
816 | 0 | return false; |
817 | 0 | } |
818 | 0 | cache_ptr->howto = elf_mn10300_howto_table + r_type; |
819 | 0 | return true; |
820 | 0 | } Unexecuted instantiation: elf-m10300.c:mn10300_info_to_howto Unexecuted instantiation: elf32-am33lin.c:mn10300_info_to_howto |
821 | | |
822 | | static int |
823 | | elf_mn10300_tls_transition (struct bfd_link_info * info, |
824 | | int r_type, |
825 | | struct elf_link_hash_entry * h, |
826 | | asection * sec, |
827 | | bool counting) |
828 | 0 | { |
829 | 0 | bool is_local; |
830 | |
|
831 | 0 | if (r_type == R_MN10300_TLS_GD |
832 | 0 | && h != NULL |
833 | 0 | && elf_mn10300_hash_entry (h)->tls_type == GOT_TLS_IE) |
834 | 0 | return R_MN10300_TLS_GOTIE; |
835 | | |
836 | 0 | if (bfd_link_pic (info)) |
837 | 0 | return r_type; |
838 | | |
839 | 0 | if (! (sec->flags & SEC_CODE)) |
840 | 0 | return r_type; |
841 | | |
842 | 0 | if (! counting && h != NULL && ! elf_hash_table (info)->dynamic_sections_created) |
843 | 0 | is_local = true; |
844 | 0 | else |
845 | 0 | is_local = SYMBOL_CALLS_LOCAL (info, h); |
846 | | |
847 | | /* For the main program, these are the transitions we do. */ |
848 | 0 | switch (r_type) |
849 | 0 | { |
850 | 0 | case R_MN10300_TLS_GD: return is_local ? R_MN10300_TLS_LE : R_MN10300_TLS_GOTIE; |
851 | 0 | case R_MN10300_TLS_LD: return R_MN10300_NONE; |
852 | 0 | case R_MN10300_TLS_LDO: return R_MN10300_TLS_LE; |
853 | 0 | case R_MN10300_TLS_IE: |
854 | 0 | case R_MN10300_TLS_GOTIE: return is_local ? R_MN10300_TLS_LE : r_type; |
855 | 0 | } |
856 | | |
857 | 0 | return r_type; |
858 | 0 | } Unexecuted instantiation: elf-m10300.c:elf_mn10300_tls_transition Unexecuted instantiation: elf32-am33lin.c:elf_mn10300_tls_transition |
859 | | |
860 | | /* Return the relocation value for @tpoff relocation |
861 | | if STT_TLS virtual address is ADDRESS. */ |
862 | | |
863 | | static bfd_vma |
864 | | dtpoff (struct bfd_link_info * info, bfd_vma address) |
865 | 0 | { |
866 | 0 | struct elf_link_hash_table *htab = elf_hash_table (info); |
867 | | |
868 | | /* If tls_sec is NULL, we should have signalled an error already. */ |
869 | 0 | if (htab->tls_sec == NULL) |
870 | 0 | return 0; |
871 | 0 | return address - htab->tls_sec->vma; |
872 | 0 | } Unexecuted instantiation: elf-m10300.c:dtpoff Unexecuted instantiation: elf32-am33lin.c:dtpoff |
873 | | |
874 | | /* Return the relocation value for @tpoff relocation |
875 | | if STT_TLS virtual address is ADDRESS. */ |
876 | | |
877 | | static bfd_vma |
878 | | tpoff (struct bfd_link_info * info, bfd_vma address) |
879 | 0 | { |
880 | 0 | struct elf_link_hash_table *htab = elf_hash_table (info); |
881 | | |
882 | | /* If tls_sec is NULL, we should have signalled an error already. */ |
883 | 0 | if (htab->tls_sec == NULL) |
884 | 0 | return 0; |
885 | 0 | return address - (htab->tls_size + htab->tls_sec->vma); |
886 | 0 | } Unexecuted instantiation: elf-m10300.c:tpoff Unexecuted instantiation: elf32-am33lin.c:tpoff |
887 | | |
888 | | /* Returns nonzero if there's a R_MN10300_PLT32 reloc that we now need |
889 | | to skip, after this one. The actual value is the offset between |
890 | | this reloc and the PLT reloc. */ |
891 | | |
892 | | static int |
893 | | mn10300_do_tls_transition (bfd * input_bfd, |
894 | | unsigned int r_type, |
895 | | unsigned int tls_r_type, |
896 | | bfd_byte * contents, |
897 | | bfd_vma offset) |
898 | 0 | { |
899 | 0 | bfd_byte *op = contents + offset; |
900 | 0 | int gotreg = 0; |
901 | |
|
902 | 0 | #define TLS_PAIR(r1,r2) ((r1) * R_MN10300_MAX + (r2)) |
903 | | |
904 | | /* This is common to all GD/LD transitions, so break it out. */ |
905 | 0 | if (r_type == R_MN10300_TLS_GD |
906 | 0 | || r_type == R_MN10300_TLS_LD) |
907 | 0 | { |
908 | 0 | op -= 2; |
909 | | /* mov imm,d0. */ |
910 | 0 | BFD_ASSERT (bfd_get_8 (input_bfd, op) == 0xFC); |
911 | 0 | BFD_ASSERT (bfd_get_8 (input_bfd, op + 1) == 0xCC); |
912 | | /* add aN,d0. */ |
913 | 0 | BFD_ASSERT (bfd_get_8 (input_bfd, op + 6) == 0xF1); |
914 | 0 | gotreg = (bfd_get_8 (input_bfd, op + 7) & 0x0c) >> 2; |
915 | | /* Call. */ |
916 | 0 | BFD_ASSERT (bfd_get_8 (input_bfd, op + 8) == 0xDD); |
917 | 0 | } |
918 | |
|
919 | 0 | switch (TLS_PAIR (r_type, tls_r_type)) |
920 | 0 | { |
921 | 0 | case TLS_PAIR (R_MN10300_TLS_GD, R_MN10300_TLS_GOTIE): |
922 | 0 | { |
923 | | /* Keep track of which register we put GOTptr in. */ |
924 | | /* mov (_x@indntpoff,a2),a0. */ |
925 | 0 | memcpy (op, "\xFC\x20\x00\x00\x00\x00", 6); |
926 | 0 | op[1] |= gotreg; |
927 | | /* add e2,a0. */ |
928 | 0 | memcpy (op+6, "\xF9\x78\x28", 3); |
929 | | /* or 0x00000000, d0 - six byte nop. */ |
930 | 0 | memcpy (op+9, "\xFC\xE4\x00\x00\x00\x00", 6); |
931 | 0 | } |
932 | 0 | return 7; |
933 | | |
934 | 0 | case TLS_PAIR (R_MN10300_TLS_GD, R_MN10300_TLS_LE): |
935 | 0 | { |
936 | | /* Register is *always* a0. */ |
937 | | /* mov _x@tpoff,a0. */ |
938 | 0 | memcpy (op, "\xFC\xDC\x00\x00\x00\x00", 6); |
939 | | /* add e2,a0. */ |
940 | 0 | memcpy (op+6, "\xF9\x78\x28", 3); |
941 | | /* or 0x00000000, d0 - six byte nop. */ |
942 | 0 | memcpy (op+9, "\xFC\xE4\x00\x00\x00\x00", 6); |
943 | 0 | } |
944 | 0 | return 7; |
945 | 0 | case TLS_PAIR (R_MN10300_TLS_LD, R_MN10300_NONE): |
946 | 0 | { |
947 | | /* Register is *always* a0. */ |
948 | | /* mov e2,a0. */ |
949 | 0 | memcpy (op, "\xF5\x88", 2); |
950 | | /* or 0x00000000, d0 - six byte nop. */ |
951 | 0 | memcpy (op+2, "\xFC\xE4\x00\x00\x00\x00", 6); |
952 | | /* or 0x00000000, e2 - seven byte nop. */ |
953 | 0 | memcpy (op+8, "\xFE\x19\x22\x00\x00\x00\x00", 7); |
954 | 0 | } |
955 | 0 | return 7; |
956 | | |
957 | 0 | case TLS_PAIR (R_MN10300_TLS_LDO, R_MN10300_TLS_LE): |
958 | | /* No changes needed, just the reloc change. */ |
959 | 0 | return 0; |
960 | | |
961 | | /* These are a little tricky, because we have to detect which |
962 | | opcode is being used (they're different sizes, with the reloc |
963 | | at different offsets within the opcode) and convert each |
964 | | accordingly, copying the operands as needed. The conversions |
965 | | we do are as follows (IE,GOTIE,LE): |
966 | | |
967 | | 1111 1100 1010 01Dn [-- abs32 --] MOV (x@indntpoff),Dn |
968 | | 1111 1100 0000 DnAm [-- abs32 --] MOV (x@gotntpoff,Am),Dn |
969 | | 1111 1100 1100 11Dn [-- abs32 --] MOV x@tpoff,Dn |
970 | | |
971 | | 1111 1100 1010 00An [-- abs32 --] MOV (x@indntpoff),An |
972 | | 1111 1100 0010 AnAm [-- abs32 --] MOV (x@gotntpoff,Am),An |
973 | | 1111 1100 1101 11An [-- abs32 --] MOV x@tpoff,An |
974 | | |
975 | | 1111 1110 0000 1110 Rnnn Xxxx [-- abs32 --] MOV (x@indntpoff),Rn |
976 | | 1111 1110 0000 1010 Rnnn Rmmm [-- abs32 --] MOV (x@indntpoff,Rm),Rn |
977 | | 1111 1110 0000 1000 Rnnn Xxxx [-- abs32 --] MOV x@tpoff,Rn |
978 | | |
979 | | Since the GOT pointer is always $a2, we assume the last |
980 | | normally won't happen, but let's be paranoid and plan for the |
981 | | day that GCC optimizes it somewhow. */ |
982 | | |
983 | 0 | case TLS_PAIR (R_MN10300_TLS_IE, R_MN10300_TLS_LE): |
984 | 0 | if (op[-2] == 0xFC) |
985 | 0 | { |
986 | 0 | op -= 2; |
987 | 0 | if ((op[1] & 0xFC) == 0xA4) /* Dn */ |
988 | 0 | { |
989 | 0 | op[1] &= 0x03; /* Leaves Dn. */ |
990 | 0 | op[1] |= 0xCC; |
991 | 0 | } |
992 | 0 | else /* An */ |
993 | 0 | { |
994 | 0 | op[1] &= 0x03; /* Leaves An. */ |
995 | 0 | op[1] |= 0xDC; |
996 | 0 | } |
997 | 0 | } |
998 | 0 | else if (op[-3] == 0xFE) |
999 | 0 | op[-2] = 0x08; |
1000 | 0 | else |
1001 | 0 | abort (); |
1002 | 0 | break; |
1003 | | |
1004 | 0 | case TLS_PAIR (R_MN10300_TLS_GOTIE, R_MN10300_TLS_LE): |
1005 | 0 | if (op[-2] == 0xFC) |
1006 | 0 | { |
1007 | 0 | op -= 2; |
1008 | 0 | if ((op[1] & 0xF0) == 0x00) /* Dn */ |
1009 | 0 | { |
1010 | 0 | op[1] &= 0x0C; /* Leaves Dn. */ |
1011 | 0 | op[1] >>= 2; |
1012 | 0 | op[1] |= 0xCC; |
1013 | 0 | } |
1014 | 0 | else /* An */ |
1015 | 0 | { |
1016 | 0 | op[1] &= 0x0C; /* Leaves An. */ |
1017 | 0 | op[1] >>= 2; |
1018 | 0 | op[1] |= 0xDC; |
1019 | 0 | } |
1020 | 0 | } |
1021 | 0 | else if (op[-3] == 0xFE) |
1022 | 0 | op[-2] = 0x08; |
1023 | 0 | else |
1024 | 0 | abort (); |
1025 | 0 | break; |
1026 | | |
1027 | 0 | default: |
1028 | 0 | _bfd_error_handler |
1029 | | /* xgettext:c-format */ |
1030 | 0 | (_("%pB: unsupported transition from %s to %s"), |
1031 | 0 | input_bfd, |
1032 | 0 | elf_mn10300_howto_table[r_type].name, |
1033 | 0 | elf_mn10300_howto_table[tls_r_type].name); |
1034 | 0 | break; |
1035 | 0 | } |
1036 | 0 | #undef TLS_PAIR |
1037 | 0 | return 0; |
1038 | 0 | } Unexecuted instantiation: elf-m10300.c:mn10300_do_tls_transition Unexecuted instantiation: elf32-am33lin.c:mn10300_do_tls_transition |
1039 | | |
1040 | | /* Look through the relocs for a section during the first phase. |
1041 | | Since we don't do .gots or .plts, we just need to consider the |
1042 | | virtual table relocs for gc. */ |
1043 | | |
1044 | | static bool |
1045 | | mn10300_elf_check_relocs (bfd *abfd, |
1046 | | struct bfd_link_info *info, |
1047 | | asection *sec, |
1048 | | const Elf_Internal_Rela *relocs) |
1049 | 0 | { |
1050 | 0 | struct elf32_mn10300_link_hash_table * htab = elf32_mn10300_hash_table (info); |
1051 | 0 | bool sym_diff_reloc_seen; |
1052 | 0 | Elf_Internal_Shdr *symtab_hdr; |
1053 | 0 | Elf_Internal_Sym * isymbuf = NULL; |
1054 | 0 | struct elf_link_hash_entry **sym_hashes; |
1055 | 0 | const Elf_Internal_Rela *rel; |
1056 | 0 | const Elf_Internal_Rela *rel_end; |
1057 | 0 | bfd * dynobj; |
1058 | 0 | bfd_vma * local_got_offsets; |
1059 | 0 | asection * sgot; |
1060 | 0 | asection * srelgot; |
1061 | 0 | asection * sreloc; |
1062 | 0 | bool result = false; |
1063 | |
|
1064 | 0 | sgot = NULL; |
1065 | 0 | srelgot = NULL; |
1066 | 0 | sreloc = NULL; |
1067 | |
|
1068 | 0 | if (bfd_link_relocatable (info)) |
1069 | 0 | return true; |
1070 | | |
1071 | 0 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1072 | 0 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
1073 | 0 | sym_hashes = elf_sym_hashes (abfd); |
1074 | |
|
1075 | 0 | dynobj = elf_hash_table (info)->dynobj; |
1076 | 0 | local_got_offsets = elf_local_got_offsets (abfd); |
1077 | 0 | rel_end = relocs + sec->reloc_count; |
1078 | 0 | sym_diff_reloc_seen = false; |
1079 | |
|
1080 | 0 | for (rel = relocs; rel < rel_end; rel++) |
1081 | 0 | { |
1082 | 0 | struct elf_link_hash_entry *h; |
1083 | 0 | unsigned long r_symndx; |
1084 | 0 | unsigned int r_type; |
1085 | 0 | int tls_type = GOT_NORMAL; |
1086 | |
|
1087 | 0 | r_symndx = ELF32_R_SYM (rel->r_info); |
1088 | 0 | if (r_symndx < symtab_hdr->sh_info) |
1089 | 0 | h = NULL; |
1090 | 0 | else |
1091 | 0 | { |
1092 | 0 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1093 | 0 | while (h->root.type == bfd_link_hash_indirect |
1094 | 0 | || h->root.type == bfd_link_hash_warning) |
1095 | 0 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
1096 | 0 | } |
1097 | |
|
1098 | 0 | r_type = ELF32_R_TYPE (rel->r_info); |
1099 | 0 | r_type = elf_mn10300_tls_transition (info, r_type, h, sec, true); |
1100 | | |
1101 | | /* Some relocs require a global offset table. */ |
1102 | 0 | if (dynobj == NULL) |
1103 | 0 | { |
1104 | 0 | switch (r_type) |
1105 | 0 | { |
1106 | 0 | case R_MN10300_GOT32: |
1107 | 0 | case R_MN10300_GOT24: |
1108 | 0 | case R_MN10300_GOT16: |
1109 | 0 | case R_MN10300_GOTOFF32: |
1110 | 0 | case R_MN10300_GOTOFF24: |
1111 | 0 | case R_MN10300_GOTOFF16: |
1112 | 0 | case R_MN10300_GOTPC32: |
1113 | 0 | case R_MN10300_GOTPC16: |
1114 | 0 | case R_MN10300_TLS_GD: |
1115 | 0 | case R_MN10300_TLS_LD: |
1116 | 0 | case R_MN10300_TLS_GOTIE: |
1117 | 0 | case R_MN10300_TLS_IE: |
1118 | 0 | elf_hash_table (info)->dynobj = dynobj = abfd; |
1119 | 0 | if (! _bfd_mn10300_elf_create_got_section (dynobj, info)) |
1120 | 0 | goto fail; |
1121 | 0 | break; |
1122 | | |
1123 | 0 | default: |
1124 | 0 | break; |
1125 | 0 | } |
1126 | 0 | } |
1127 | | |
1128 | 0 | switch (r_type) |
1129 | 0 | { |
1130 | | /* This relocation describes the C++ object vtable hierarchy. |
1131 | | Reconstruct it for later use during GC. */ |
1132 | 0 | case R_MN10300_GNU_VTINHERIT: |
1133 | 0 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
1134 | 0 | goto fail; |
1135 | 0 | break; |
1136 | | |
1137 | | /* This relocation describes which C++ vtable entries are actually |
1138 | | used. Record for later use during GC. */ |
1139 | 0 | case R_MN10300_GNU_VTENTRY: |
1140 | 0 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
1141 | 0 | goto fail; |
1142 | 0 | break; |
1143 | | |
1144 | 0 | case R_MN10300_TLS_LD: |
1145 | 0 | htab->tls_ldm_got.refcount ++; |
1146 | 0 | tls_type = GOT_TLS_LD; |
1147 | |
|
1148 | 0 | if (htab->tls_ldm_got.got_allocated) |
1149 | 0 | break; |
1150 | 0 | goto create_got; |
1151 | | |
1152 | 0 | case R_MN10300_TLS_IE: |
1153 | 0 | case R_MN10300_TLS_GOTIE: |
1154 | 0 | if (bfd_link_pic (info)) |
1155 | 0 | info->flags |= DF_STATIC_TLS; |
1156 | | /* Fall through */ |
1157 | |
|
1158 | 0 | case R_MN10300_TLS_GD: |
1159 | 0 | case R_MN10300_GOT32: |
1160 | 0 | case R_MN10300_GOT24: |
1161 | 0 | case R_MN10300_GOT16: |
1162 | 0 | create_got: |
1163 | | /* This symbol requires a global offset table entry. */ |
1164 | |
|
1165 | 0 | switch (r_type) |
1166 | 0 | { |
1167 | 0 | case R_MN10300_TLS_IE: |
1168 | 0 | case R_MN10300_TLS_GOTIE: tls_type = GOT_TLS_IE; break; |
1169 | 0 | case R_MN10300_TLS_GD: tls_type = GOT_TLS_GD; break; |
1170 | 0 | default: tls_type = GOT_NORMAL; break; |
1171 | 0 | } |
1172 | | |
1173 | 0 | sgot = htab->root.sgot; |
1174 | 0 | srelgot = htab->root.srelgot; |
1175 | 0 | BFD_ASSERT (sgot != NULL && srelgot != NULL); |
1176 | |
|
1177 | 0 | if (r_type == R_MN10300_TLS_LD) |
1178 | 0 | { |
1179 | 0 | htab->tls_ldm_got.offset = sgot->size; |
1180 | 0 | htab->tls_ldm_got.got_allocated ++; |
1181 | 0 | } |
1182 | 0 | else if (h != NULL) |
1183 | 0 | { |
1184 | 0 | if (elf_mn10300_hash_entry (h)->tls_type != tls_type |
1185 | 0 | && elf_mn10300_hash_entry (h)->tls_type != GOT_UNKNOWN) |
1186 | 0 | { |
1187 | 0 | if (tls_type == GOT_TLS_IE |
1188 | 0 | && elf_mn10300_hash_entry (h)->tls_type == GOT_TLS_GD) |
1189 | 0 | /* No change - this is ok. */; |
1190 | 0 | else if (tls_type == GOT_TLS_GD |
1191 | 0 | && elf_mn10300_hash_entry (h)->tls_type == GOT_TLS_IE) |
1192 | | /* Transition GD->IE. */ |
1193 | 0 | tls_type = GOT_TLS_IE; |
1194 | 0 | else |
1195 | 0 | _bfd_error_handler |
1196 | | /* xgettext:c-format */ |
1197 | 0 | (_("%pB: %s' accessed both as normal and thread local symbol"), |
1198 | 0 | abfd, h ? h->root.root.string : "<local>"); |
1199 | 0 | } |
1200 | |
|
1201 | 0 | elf_mn10300_hash_entry (h)->tls_type = tls_type; |
1202 | |
|
1203 | 0 | if (h->got.offset != (bfd_vma) -1) |
1204 | | /* We have already allocated space in the .got. */ |
1205 | 0 | break; |
1206 | | |
1207 | 0 | h->got.offset = sgot->size; |
1208 | |
|
1209 | 0 | if (ELF_ST_VISIBILITY (h->other) != STV_INTERNAL |
1210 | | /* Make sure this symbol is output as a dynamic symbol. */ |
1211 | 0 | && h->dynindx == -1) |
1212 | 0 | { |
1213 | 0 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
1214 | 0 | goto fail; |
1215 | 0 | } |
1216 | | |
1217 | 0 | srelgot->size += sizeof (Elf32_External_Rela); |
1218 | 0 | if (r_type == R_MN10300_TLS_GD) |
1219 | 0 | srelgot->size += sizeof (Elf32_External_Rela); |
1220 | 0 | } |
1221 | 0 | else |
1222 | 0 | { |
1223 | | /* This is a global offset table entry for a local |
1224 | | symbol. */ |
1225 | 0 | if (local_got_offsets == NULL) |
1226 | 0 | { |
1227 | 0 | size_t size; |
1228 | 0 | unsigned int i; |
1229 | |
|
1230 | 0 | size = symtab_hdr->sh_info * (sizeof (bfd_vma) + sizeof (char)); |
1231 | 0 | local_got_offsets = bfd_alloc (abfd, size); |
1232 | |
|
1233 | 0 | if (local_got_offsets == NULL) |
1234 | 0 | goto fail; |
1235 | | |
1236 | 0 | elf_local_got_offsets (abfd) = local_got_offsets; |
1237 | 0 | elf_mn10300_local_got_tls_type (abfd) |
1238 | 0 | = (char *) (local_got_offsets + symtab_hdr->sh_info); |
1239 | |
|
1240 | 0 | for (i = 0; i < symtab_hdr->sh_info; i++) |
1241 | 0 | local_got_offsets[i] = (bfd_vma) -1; |
1242 | 0 | } |
1243 | | |
1244 | 0 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) |
1245 | | /* We have already allocated space in the .got. */ |
1246 | 0 | break; |
1247 | | |
1248 | 0 | local_got_offsets[r_symndx] = sgot->size; |
1249 | |
|
1250 | 0 | if (bfd_link_pic (info)) |
1251 | 0 | { |
1252 | | /* If we are generating a shared object, we need to |
1253 | | output a R_MN10300_RELATIVE reloc so that the dynamic |
1254 | | linker can adjust this GOT entry. */ |
1255 | 0 | srelgot->size += sizeof (Elf32_External_Rela); |
1256 | |
|
1257 | 0 | if (r_type == R_MN10300_TLS_GD) |
1258 | | /* And a R_MN10300_TLS_DTPOFF reloc as well. */ |
1259 | 0 | srelgot->size += sizeof (Elf32_External_Rela); |
1260 | 0 | } |
1261 | |
|
1262 | 0 | elf_mn10300_local_got_tls_type (abfd) [r_symndx] = tls_type; |
1263 | 0 | } |
1264 | | |
1265 | 0 | sgot->size += 4; |
1266 | 0 | if (r_type == R_MN10300_TLS_GD |
1267 | 0 | || r_type == R_MN10300_TLS_LD) |
1268 | 0 | sgot->size += 4; |
1269 | |
|
1270 | 0 | goto need_shared_relocs; |
1271 | | |
1272 | 0 | case R_MN10300_PLT32: |
1273 | 0 | case R_MN10300_PLT16: |
1274 | | /* This symbol requires a procedure linkage table entry. We |
1275 | | actually build the entry in adjust_dynamic_symbol, |
1276 | | because this might be a case of linking PIC code which is |
1277 | | never referenced by a dynamic object, in which case we |
1278 | | don't need to generate a procedure linkage table entry |
1279 | | after all. */ |
1280 | | |
1281 | | /* If this is a local symbol, we resolve it directly without |
1282 | | creating a procedure linkage table entry. */ |
1283 | 0 | if (h == NULL) |
1284 | 0 | continue; |
1285 | | |
1286 | 0 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL |
1287 | 0 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) |
1288 | 0 | break; |
1289 | | |
1290 | 0 | h->needs_plt = 1; |
1291 | 0 | break; |
1292 | | |
1293 | 0 | case R_MN10300_24: |
1294 | 0 | case R_MN10300_16: |
1295 | 0 | case R_MN10300_8: |
1296 | 0 | case R_MN10300_PCREL32: |
1297 | 0 | case R_MN10300_PCREL16: |
1298 | 0 | case R_MN10300_PCREL8: |
1299 | 0 | if (h != NULL) |
1300 | 0 | h->non_got_ref = 1; |
1301 | 0 | break; |
1302 | | |
1303 | 0 | case R_MN10300_SYM_DIFF: |
1304 | 0 | sym_diff_reloc_seen = true; |
1305 | 0 | break; |
1306 | | |
1307 | 0 | case R_MN10300_32: |
1308 | 0 | if (h != NULL) |
1309 | 0 | h->non_got_ref = 1; |
1310 | |
|
1311 | 0 | need_shared_relocs: |
1312 | | /* If we are creating a shared library, then we |
1313 | | need to copy the reloc into the shared library. */ |
1314 | 0 | if (bfd_link_pic (info) |
1315 | 0 | && (sec->flags & SEC_ALLOC) != 0 |
1316 | | /* Do not generate a dynamic reloc for a |
1317 | | reloc associated with a SYM_DIFF operation. */ |
1318 | 0 | && ! sym_diff_reloc_seen) |
1319 | 0 | { |
1320 | 0 | asection * sym_section = NULL; |
1321 | | |
1322 | | /* Find the section containing the |
1323 | | symbol involved in the relocation. */ |
1324 | 0 | if (h == NULL) |
1325 | 0 | { |
1326 | 0 | Elf_Internal_Sym * isym; |
1327 | |
|
1328 | 0 | if (isymbuf == NULL) |
1329 | 0 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, |
1330 | 0 | symtab_hdr->sh_info, 0, |
1331 | 0 | NULL, NULL, NULL); |
1332 | 0 | if (isymbuf) |
1333 | 0 | { |
1334 | 0 | isym = isymbuf + r_symndx; |
1335 | | /* All we care about is whether this local symbol is absolute. */ |
1336 | 0 | if (isym->st_shndx == SHN_ABS) |
1337 | 0 | sym_section = bfd_abs_section_ptr; |
1338 | 0 | } |
1339 | 0 | } |
1340 | 0 | else |
1341 | 0 | { |
1342 | 0 | if (h->root.type == bfd_link_hash_defined |
1343 | 0 | || h->root.type == bfd_link_hash_defweak) |
1344 | 0 | sym_section = h->root.u.def.section; |
1345 | 0 | } |
1346 | | |
1347 | | /* If the symbol is absolute then the relocation can |
1348 | | be resolved during linking and there is no need for |
1349 | | a dynamic reloc. */ |
1350 | 0 | if (sym_section != bfd_abs_section_ptr) |
1351 | 0 | { |
1352 | | /* When creating a shared object, we must copy these |
1353 | | reloc types into the output file. We create a reloc |
1354 | | section in dynobj and make room for this reloc. */ |
1355 | 0 | if (sreloc == NULL) |
1356 | 0 | { |
1357 | 0 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1358 | 0 | (sec, dynobj, 2, abfd, /*rela?*/ true); |
1359 | 0 | if (sreloc == NULL) |
1360 | 0 | goto fail; |
1361 | 0 | } |
1362 | | |
1363 | 0 | sreloc->size += sizeof (Elf32_External_Rela); |
1364 | 0 | } |
1365 | 0 | } |
1366 | | |
1367 | 0 | break; |
1368 | 0 | } |
1369 | | |
1370 | 0 | if (ELF32_R_TYPE (rel->r_info) != R_MN10300_SYM_DIFF) |
1371 | 0 | sym_diff_reloc_seen = false; |
1372 | 0 | } |
1373 | | |
1374 | 0 | result = true; |
1375 | 0 | fail: |
1376 | 0 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
1377 | 0 | free (isymbuf); |
1378 | |
|
1379 | 0 | return result; |
1380 | 0 | } Unexecuted instantiation: elf-m10300.c:mn10300_elf_check_relocs Unexecuted instantiation: elf32-am33lin.c:mn10300_elf_check_relocs |
1381 | | |
1382 | | /* Return the section that should be marked against GC for a given |
1383 | | relocation. */ |
1384 | | |
1385 | | static asection * |
1386 | | mn10300_elf_gc_mark_hook (asection *sec, |
1387 | | struct bfd_link_info *info, |
1388 | | Elf_Internal_Rela *rel, |
1389 | | struct elf_link_hash_entry *h, |
1390 | | Elf_Internal_Sym *sym) |
1391 | 0 | { |
1392 | 0 | if (h != NULL) |
1393 | 0 | switch (ELF32_R_TYPE (rel->r_info)) |
1394 | 0 | { |
1395 | 0 | case R_MN10300_GNU_VTINHERIT: |
1396 | 0 | case R_MN10300_GNU_VTENTRY: |
1397 | 0 | return NULL; |
1398 | 0 | } |
1399 | | |
1400 | 0 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
1401 | 0 | } Unexecuted instantiation: elf-m10300.c:mn10300_elf_gc_mark_hook Unexecuted instantiation: elf32-am33lin.c:mn10300_elf_gc_mark_hook |
1402 | | |
1403 | | /* Perform a relocation as part of a final link. */ |
1404 | | |
1405 | | static bfd_reloc_status_type |
1406 | | mn10300_elf_final_link_relocate (reloc_howto_type *howto, |
1407 | | bfd *input_bfd, |
1408 | | bfd *output_bfd ATTRIBUTE_UNUSED, |
1409 | | asection *input_section, |
1410 | | bfd_byte *contents, |
1411 | | bfd_vma offset, |
1412 | | bfd_vma value, |
1413 | | bfd_vma addend, |
1414 | | struct elf_link_hash_entry * h, |
1415 | | unsigned long symndx, |
1416 | | struct bfd_link_info *info, |
1417 | | asection *sym_sec ATTRIBUTE_UNUSED, |
1418 | | int is_local ATTRIBUTE_UNUSED) |
1419 | 0 | { |
1420 | 0 | struct elf32_mn10300_link_hash_table * htab = elf32_mn10300_hash_table (info); |
1421 | 0 | static asection * sym_diff_section; |
1422 | 0 | static bfd_vma sym_diff_value; |
1423 | 0 | bool is_sym_diff_reloc; |
1424 | 0 | unsigned long r_type = howto->type; |
1425 | 0 | bfd_byte * hit_data = contents + offset; |
1426 | 0 | bfd * dynobj; |
1427 | 0 | asection * sgot; |
1428 | 0 | asection * splt; |
1429 | 0 | asection * sreloc; |
1430 | |
|
1431 | 0 | dynobj = elf_hash_table (info)->dynobj; |
1432 | 0 | sgot = NULL; |
1433 | 0 | splt = NULL; |
1434 | 0 | sreloc = NULL; |
1435 | |
|
1436 | 0 | switch (r_type) |
1437 | 0 | { |
1438 | 0 | case R_MN10300_24: |
1439 | 0 | case R_MN10300_16: |
1440 | 0 | case R_MN10300_8: |
1441 | 0 | case R_MN10300_PCREL8: |
1442 | 0 | case R_MN10300_PCREL16: |
1443 | 0 | case R_MN10300_PCREL32: |
1444 | 0 | case R_MN10300_GOTOFF32: |
1445 | 0 | case R_MN10300_GOTOFF24: |
1446 | 0 | case R_MN10300_GOTOFF16: |
1447 | 0 | if (bfd_link_pic (info) |
1448 | 0 | && (input_section->flags & SEC_ALLOC) != 0 |
1449 | 0 | && h != NULL |
1450 | 0 | && ! SYMBOL_REFERENCES_LOCAL (info, h)) |
1451 | 0 | return bfd_reloc_dangerous; |
1452 | | /* Fall through. */ |
1453 | 0 | case R_MN10300_GOT32: |
1454 | | /* Issue 2052223: |
1455 | | Taking the address of a protected function in a shared library |
1456 | | is illegal. Issue an error message here. */ |
1457 | 0 | if (bfd_link_pic (info) |
1458 | 0 | && (input_section->flags & SEC_ALLOC) != 0 |
1459 | 0 | && h != NULL |
1460 | 0 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED |
1461 | 0 | && (h->type == STT_FUNC || h->type == STT_GNU_IFUNC) |
1462 | 0 | && ! SYMBOL_REFERENCES_LOCAL (info, h)) |
1463 | 0 | return bfd_reloc_dangerous; |
1464 | 0 | } |
1465 | | |
1466 | 0 | is_sym_diff_reloc = false; |
1467 | 0 | if (sym_diff_section != NULL) |
1468 | 0 | { |
1469 | 0 | BFD_ASSERT (sym_diff_section == input_section); |
1470 | |
|
1471 | 0 | switch (r_type) |
1472 | 0 | { |
1473 | 0 | case R_MN10300_32: |
1474 | 0 | case R_MN10300_24: |
1475 | 0 | case R_MN10300_16: |
1476 | 0 | case R_MN10300_8: |
1477 | 0 | value -= sym_diff_value; |
1478 | | /* If we are computing a 32-bit value for the location lists |
1479 | | and the result is 0 then we add one to the value. A zero |
1480 | | value can result because of linker relaxation deleteing |
1481 | | prologue instructions and using a value of 1 (for the begin |
1482 | | and end offsets in the location list entry) results in a |
1483 | | nul entry which does not prevent the following entries from |
1484 | | being parsed. */ |
1485 | 0 | if (r_type == R_MN10300_32 |
1486 | 0 | && value == 0 |
1487 | 0 | && strcmp (input_section->name, ".debug_loc") == 0) |
1488 | 0 | value = 1; |
1489 | 0 | sym_diff_section = NULL; |
1490 | 0 | is_sym_diff_reloc = true; |
1491 | 0 | break; |
1492 | | |
1493 | 0 | default: |
1494 | 0 | sym_diff_section = NULL; |
1495 | 0 | break; |
1496 | 0 | } |
1497 | 0 | } |
1498 | | |
1499 | 0 | switch (r_type) |
1500 | 0 | { |
1501 | 0 | case R_MN10300_SYM_DIFF: |
1502 | 0 | BFD_ASSERT (addend == 0); |
1503 | | /* Cache the input section and value. |
1504 | | The offset is unreliable, since relaxation may |
1505 | | have reduced the following reloc's offset. */ |
1506 | 0 | sym_diff_section = input_section; |
1507 | 0 | sym_diff_value = value; |
1508 | 0 | return bfd_reloc_ok; |
1509 | | |
1510 | 0 | case R_MN10300_ALIGN: |
1511 | 0 | case R_MN10300_NONE: |
1512 | 0 | return bfd_reloc_ok; |
1513 | | |
1514 | 0 | case R_MN10300_32: |
1515 | 0 | if (bfd_link_pic (info) |
1516 | | /* Do not generate relocs when an R_MN10300_32 has been used |
1517 | | with an R_MN10300_SYM_DIFF to compute a difference of two |
1518 | | symbols. */ |
1519 | 0 | && !is_sym_diff_reloc |
1520 | | /* Also, do not generate a reloc when the symbol associated |
1521 | | with the R_MN10300_32 reloc is absolute - there is no |
1522 | | need for a run time computation in this case. */ |
1523 | 0 | && sym_sec != bfd_abs_section_ptr |
1524 | | /* If the section is not going to be allocated at load time |
1525 | | then there is no need to generate relocs for it. */ |
1526 | 0 | && (input_section->flags & SEC_ALLOC) != 0) |
1527 | 0 | { |
1528 | 0 | Elf_Internal_Rela outrel; |
1529 | 0 | bool skip, relocate; |
1530 | | |
1531 | | /* When generating a shared object, these relocations are |
1532 | | copied into the output file to be resolved at run |
1533 | | time. */ |
1534 | 0 | if (sreloc == NULL) |
1535 | 0 | { |
1536 | 0 | sreloc = _bfd_elf_get_dynamic_reloc_section |
1537 | 0 | (input_bfd, input_section, /*rela?*/ true); |
1538 | 0 | if (sreloc == NULL) |
1539 | 0 | return false; |
1540 | 0 | } |
1541 | | |
1542 | 0 | skip = false; |
1543 | |
|
1544 | 0 | outrel.r_offset = _bfd_elf_section_offset (input_bfd, info, |
1545 | 0 | input_section, offset); |
1546 | 0 | if (outrel.r_offset == (bfd_vma) -1) |
1547 | 0 | skip = true; |
1548 | |
|
1549 | 0 | outrel.r_offset += (input_section->output_section->vma |
1550 | 0 | + input_section->output_offset); |
1551 | |
|
1552 | 0 | if (skip) |
1553 | 0 | { |
1554 | 0 | memset (&outrel, 0, sizeof outrel); |
1555 | 0 | relocate = false; |
1556 | 0 | } |
1557 | 0 | else |
1558 | 0 | { |
1559 | | /* h->dynindx may be -1 if this symbol was marked to |
1560 | | become local. */ |
1561 | 0 | if (h == NULL |
1562 | 0 | || SYMBOL_REFERENCES_LOCAL (info, h)) |
1563 | 0 | { |
1564 | 0 | relocate = true; |
1565 | 0 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); |
1566 | 0 | outrel.r_addend = value + addend; |
1567 | 0 | } |
1568 | 0 | else |
1569 | 0 | { |
1570 | 0 | BFD_ASSERT (h->dynindx != -1); |
1571 | 0 | relocate = false; |
1572 | 0 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32); |
1573 | 0 | outrel.r_addend = value + addend; |
1574 | 0 | } |
1575 | 0 | } |
1576 | |
|
1577 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
1578 | 0 | (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents) |
1579 | 0 | + sreloc->reloc_count)); |
1580 | 0 | ++sreloc->reloc_count; |
1581 | | |
1582 | | /* If this reloc is against an external symbol, we do |
1583 | | not want to fiddle with the addend. Otherwise, we |
1584 | | need to include the symbol value so that it becomes |
1585 | | an addend for the dynamic reloc. */ |
1586 | 0 | if (! relocate) |
1587 | 0 | return bfd_reloc_ok; |
1588 | 0 | } |
1589 | 0 | value += addend; |
1590 | 0 | bfd_put_32 (input_bfd, value, hit_data); |
1591 | 0 | return bfd_reloc_ok; |
1592 | | |
1593 | 0 | case R_MN10300_24: |
1594 | 0 | value += addend; |
1595 | |
|
1596 | 0 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
1597 | 0 | return bfd_reloc_overflow; |
1598 | | |
1599 | 0 | bfd_put_8 (input_bfd, value & 0xff, hit_data); |
1600 | 0 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); |
1601 | 0 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); |
1602 | 0 | return bfd_reloc_ok; |
1603 | | |
1604 | 0 | case R_MN10300_16: |
1605 | 0 | value += addend; |
1606 | |
|
1607 | 0 | if ((long) value > 0x7fff || (long) value < -0x8000) |
1608 | 0 | return bfd_reloc_overflow; |
1609 | | |
1610 | 0 | bfd_put_16 (input_bfd, value, hit_data); |
1611 | 0 | return bfd_reloc_ok; |
1612 | | |
1613 | 0 | case R_MN10300_8: |
1614 | 0 | value += addend; |
1615 | |
|
1616 | 0 | if ((long) value > 0x7f || (long) value < -0x80) |
1617 | 0 | return bfd_reloc_overflow; |
1618 | | |
1619 | 0 | bfd_put_8 (input_bfd, value, hit_data); |
1620 | 0 | return bfd_reloc_ok; |
1621 | | |
1622 | 0 | case R_MN10300_PCREL8: |
1623 | 0 | value -= (input_section->output_section->vma |
1624 | 0 | + input_section->output_offset); |
1625 | 0 | value -= offset; |
1626 | 0 | value += addend; |
1627 | |
|
1628 | 0 | if ((long) value > 0x7f || (long) value < -0x80) |
1629 | 0 | return bfd_reloc_overflow; |
1630 | | |
1631 | 0 | bfd_put_8 (input_bfd, value, hit_data); |
1632 | 0 | return bfd_reloc_ok; |
1633 | | |
1634 | 0 | case R_MN10300_PCREL16: |
1635 | 0 | value -= (input_section->output_section->vma |
1636 | 0 | + input_section->output_offset); |
1637 | 0 | value -= offset; |
1638 | 0 | value += addend; |
1639 | |
|
1640 | 0 | if ((long) value > 0x7fff || (long) value < -0x8000) |
1641 | 0 | return bfd_reloc_overflow; |
1642 | | |
1643 | 0 | bfd_put_16 (input_bfd, value, hit_data); |
1644 | 0 | return bfd_reloc_ok; |
1645 | | |
1646 | 0 | case R_MN10300_PCREL32: |
1647 | 0 | value -= (input_section->output_section->vma |
1648 | 0 | + input_section->output_offset); |
1649 | 0 | value -= offset; |
1650 | 0 | value += addend; |
1651 | |
|
1652 | 0 | bfd_put_32 (input_bfd, value, hit_data); |
1653 | 0 | return bfd_reloc_ok; |
1654 | | |
1655 | 0 | case R_MN10300_GNU_VTINHERIT: |
1656 | 0 | case R_MN10300_GNU_VTENTRY: |
1657 | 0 | return bfd_reloc_ok; |
1658 | | |
1659 | 0 | case R_MN10300_GOTPC32: |
1660 | 0 | if (dynobj == NULL) |
1661 | 0 | return bfd_reloc_dangerous; |
1662 | | |
1663 | | /* Use global offset table as symbol value. */ |
1664 | 0 | value = htab->root.sgot->output_section->vma; |
1665 | 0 | value -= (input_section->output_section->vma |
1666 | 0 | + input_section->output_offset); |
1667 | 0 | value -= offset; |
1668 | 0 | value += addend; |
1669 | |
|
1670 | 0 | bfd_put_32 (input_bfd, value, hit_data); |
1671 | 0 | return bfd_reloc_ok; |
1672 | | |
1673 | 0 | case R_MN10300_GOTPC16: |
1674 | 0 | if (dynobj == NULL) |
1675 | 0 | return bfd_reloc_dangerous; |
1676 | | |
1677 | | /* Use global offset table as symbol value. */ |
1678 | 0 | value = htab->root.sgot->output_section->vma; |
1679 | 0 | value -= (input_section->output_section->vma |
1680 | 0 | + input_section->output_offset); |
1681 | 0 | value -= offset; |
1682 | 0 | value += addend; |
1683 | |
|
1684 | 0 | if ((long) value > 0x7fff || (long) value < -0x8000) |
1685 | 0 | return bfd_reloc_overflow; |
1686 | | |
1687 | 0 | bfd_put_16 (input_bfd, value, hit_data); |
1688 | 0 | return bfd_reloc_ok; |
1689 | | |
1690 | 0 | case R_MN10300_GOTOFF32: |
1691 | 0 | if (dynobj == NULL) |
1692 | 0 | return bfd_reloc_dangerous; |
1693 | | |
1694 | 0 | value -= htab->root.sgot->output_section->vma; |
1695 | 0 | value += addend; |
1696 | |
|
1697 | 0 | bfd_put_32 (input_bfd, value, hit_data); |
1698 | 0 | return bfd_reloc_ok; |
1699 | | |
1700 | 0 | case R_MN10300_GOTOFF24: |
1701 | 0 | if (dynobj == NULL) |
1702 | 0 | return bfd_reloc_dangerous; |
1703 | | |
1704 | 0 | value -= htab->root.sgot->output_section->vma; |
1705 | 0 | value += addend; |
1706 | |
|
1707 | 0 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
1708 | 0 | return bfd_reloc_overflow; |
1709 | | |
1710 | 0 | bfd_put_8 (input_bfd, value, hit_data); |
1711 | 0 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); |
1712 | 0 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); |
1713 | 0 | return bfd_reloc_ok; |
1714 | | |
1715 | 0 | case R_MN10300_GOTOFF16: |
1716 | 0 | if (dynobj == NULL) |
1717 | 0 | return bfd_reloc_dangerous; |
1718 | | |
1719 | 0 | value -= htab->root.sgot->output_section->vma; |
1720 | 0 | value += addend; |
1721 | |
|
1722 | 0 | if ((long) value > 0x7fff || (long) value < -0x8000) |
1723 | 0 | return bfd_reloc_overflow; |
1724 | | |
1725 | 0 | bfd_put_16 (input_bfd, value, hit_data); |
1726 | 0 | return bfd_reloc_ok; |
1727 | | |
1728 | 0 | case R_MN10300_PLT32: |
1729 | 0 | if (h != NULL |
1730 | 0 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL |
1731 | 0 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN |
1732 | 0 | && h->plt.offset != (bfd_vma) -1) |
1733 | 0 | { |
1734 | 0 | if (dynobj == NULL) |
1735 | 0 | return bfd_reloc_dangerous; |
1736 | | |
1737 | 0 | splt = htab->root.splt; |
1738 | 0 | value = (splt->output_section->vma |
1739 | 0 | + splt->output_offset |
1740 | 0 | + h->plt.offset) - value; |
1741 | 0 | } |
1742 | | |
1743 | 0 | value -= (input_section->output_section->vma |
1744 | 0 | + input_section->output_offset); |
1745 | 0 | value -= offset; |
1746 | 0 | value += addend; |
1747 | |
|
1748 | 0 | bfd_put_32 (input_bfd, value, hit_data); |
1749 | 0 | return bfd_reloc_ok; |
1750 | | |
1751 | 0 | case R_MN10300_PLT16: |
1752 | 0 | if (h != NULL |
1753 | 0 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL |
1754 | 0 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN |
1755 | 0 | && h->plt.offset != (bfd_vma) -1) |
1756 | 0 | { |
1757 | 0 | if (dynobj == NULL) |
1758 | 0 | return bfd_reloc_dangerous; |
1759 | | |
1760 | 0 | splt = htab->root.splt; |
1761 | 0 | value = (splt->output_section->vma |
1762 | 0 | + splt->output_offset |
1763 | 0 | + h->plt.offset) - value; |
1764 | 0 | } |
1765 | | |
1766 | 0 | value -= (input_section->output_section->vma |
1767 | 0 | + input_section->output_offset); |
1768 | 0 | value -= offset; |
1769 | 0 | value += addend; |
1770 | |
|
1771 | 0 | if ((long) value > 0x7fff || (long) value < -0x8000) |
1772 | 0 | return bfd_reloc_overflow; |
1773 | | |
1774 | 0 | bfd_put_16 (input_bfd, value, hit_data); |
1775 | 0 | return bfd_reloc_ok; |
1776 | | |
1777 | 0 | case R_MN10300_TLS_LDO: |
1778 | 0 | value = dtpoff (info, value); |
1779 | 0 | bfd_put_32 (input_bfd, value + addend, hit_data); |
1780 | 0 | return bfd_reloc_ok; |
1781 | | |
1782 | 0 | case R_MN10300_TLS_LE: |
1783 | 0 | value = tpoff (info, value); |
1784 | 0 | bfd_put_32 (input_bfd, value + addend, hit_data); |
1785 | 0 | return bfd_reloc_ok; |
1786 | | |
1787 | 0 | case R_MN10300_TLS_LD: |
1788 | 0 | if (dynobj == NULL) |
1789 | 0 | return bfd_reloc_dangerous; |
1790 | | |
1791 | 0 | sgot = htab->root.sgot; |
1792 | 0 | BFD_ASSERT (sgot != NULL); |
1793 | 0 | value = htab->tls_ldm_got.offset + sgot->output_offset; |
1794 | 0 | bfd_put_32 (input_bfd, value, hit_data); |
1795 | |
|
1796 | 0 | if (!htab->tls_ldm_got.rel_emitted) |
1797 | 0 | { |
1798 | 0 | asection *srelgot = htab->root.srelgot; |
1799 | 0 | Elf_Internal_Rela rel; |
1800 | |
|
1801 | 0 | BFD_ASSERT (srelgot != NULL); |
1802 | 0 | htab->tls_ldm_got.rel_emitted ++; |
1803 | 0 | rel.r_offset = (sgot->output_section->vma |
1804 | 0 | + sgot->output_offset |
1805 | 0 | + htab->tls_ldm_got.offset); |
1806 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + htab->tls_ldm_got.offset); |
1807 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + htab->tls_ldm_got.offset+4); |
1808 | 0 | rel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_DTPMOD); |
1809 | 0 | rel.r_addend = 0; |
1810 | 0 | bfd_elf32_swap_reloca_out (output_bfd, & rel, |
1811 | 0 | (bfd_byte *) ((Elf32_External_Rela *) srelgot->contents |
1812 | 0 | + srelgot->reloc_count)); |
1813 | 0 | ++ srelgot->reloc_count; |
1814 | 0 | } |
1815 | |
|
1816 | 0 | return bfd_reloc_ok; |
1817 | | |
1818 | 0 | case R_MN10300_TLS_GOTIE: |
1819 | 0 | value = tpoff (info, value); |
1820 | | /* Fall Through. */ |
1821 | |
|
1822 | 0 | case R_MN10300_TLS_GD: |
1823 | 0 | case R_MN10300_TLS_IE: |
1824 | 0 | case R_MN10300_GOT32: |
1825 | 0 | case R_MN10300_GOT24: |
1826 | 0 | case R_MN10300_GOT16: |
1827 | 0 | if (dynobj == NULL) |
1828 | 0 | return bfd_reloc_dangerous; |
1829 | | |
1830 | 0 | sgot = htab->root.sgot; |
1831 | 0 | if (r_type == R_MN10300_TLS_GD) |
1832 | 0 | value = dtpoff (info, value); |
1833 | |
|
1834 | 0 | if (h != NULL) |
1835 | 0 | { |
1836 | 0 | bfd_vma off; |
1837 | |
|
1838 | 0 | off = h->got.offset; |
1839 | | /* Offsets in the GOT are allocated in check_relocs |
1840 | | which is not called for shared libraries... */ |
1841 | 0 | if (off == (bfd_vma) -1) |
1842 | 0 | off = 0; |
1843 | |
|
1844 | 0 | if (sgot->contents != NULL |
1845 | 0 | && (! elf_hash_table (info)->dynamic_sections_created |
1846 | 0 | || SYMBOL_REFERENCES_LOCAL (info, h))) |
1847 | | /* This is actually a static link, or it is a |
1848 | | -Bsymbolic link and the symbol is defined |
1849 | | locally, or the symbol was forced to be local |
1850 | | because of a version file. We must initialize |
1851 | | this entry in the global offset table. |
1852 | | |
1853 | | When doing a dynamic link, we create a .rela.got |
1854 | | relocation entry to initialize the value. This |
1855 | | is done in the finish_dynamic_symbol routine. */ |
1856 | 0 | bfd_put_32 (output_bfd, value, |
1857 | 0 | sgot->contents + off); |
1858 | |
|
1859 | 0 | value = sgot->output_offset + off; |
1860 | 0 | } |
1861 | 0 | else |
1862 | 0 | { |
1863 | 0 | bfd_vma off; |
1864 | |
|
1865 | 0 | off = elf_local_got_offsets (input_bfd)[symndx]; |
1866 | |
|
1867 | 0 | if (off & 1) |
1868 | 0 | bfd_put_32 (output_bfd, value, sgot->contents + (off & ~ 1)); |
1869 | 0 | else |
1870 | 0 | { |
1871 | 0 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
1872 | |
|
1873 | 0 | if (bfd_link_pic (info)) |
1874 | 0 | { |
1875 | 0 | asection *srelgot = htab->root.srelgot;; |
1876 | 0 | Elf_Internal_Rela outrel; |
1877 | |
|
1878 | 0 | BFD_ASSERT (srelgot != NULL); |
1879 | |
|
1880 | 0 | outrel.r_offset = (sgot->output_section->vma |
1881 | 0 | + sgot->output_offset |
1882 | 0 | + off); |
1883 | 0 | switch (r_type) |
1884 | 0 | { |
1885 | 0 | case R_MN10300_TLS_GD: |
1886 | 0 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_DTPOFF); |
1887 | 0 | outrel.r_offset = (sgot->output_section->vma |
1888 | 0 | + sgot->output_offset |
1889 | 0 | + off + 4); |
1890 | 0 | bfd_elf32_swap_reloca_out (output_bfd, & outrel, |
1891 | 0 | (bfd_byte *) (((Elf32_External_Rela *) |
1892 | 0 | srelgot->contents) |
1893 | 0 | + srelgot->reloc_count)); |
1894 | 0 | ++ srelgot->reloc_count; |
1895 | 0 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_DTPMOD); |
1896 | 0 | break; |
1897 | 0 | case R_MN10300_TLS_GOTIE: |
1898 | 0 | case R_MN10300_TLS_IE: |
1899 | 0 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_TPOFF); |
1900 | 0 | break; |
1901 | 0 | default: |
1902 | 0 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); |
1903 | 0 | break; |
1904 | 0 | } |
1905 | | |
1906 | 0 | outrel.r_addend = value; |
1907 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
1908 | 0 | (bfd_byte *) (((Elf32_External_Rela *) |
1909 | 0 | srelgot->contents) |
1910 | 0 | + srelgot->reloc_count)); |
1911 | 0 | ++ srelgot->reloc_count; |
1912 | 0 | elf_local_got_offsets (input_bfd)[symndx] |= 1; |
1913 | 0 | } |
1914 | | |
1915 | 0 | value = sgot->output_offset + (off & ~(bfd_vma) 1); |
1916 | 0 | } |
1917 | 0 | } |
1918 | | |
1919 | 0 | value += addend; |
1920 | |
|
1921 | 0 | if (r_type == R_MN10300_TLS_IE) |
1922 | 0 | { |
1923 | 0 | value += sgot->output_section->vma; |
1924 | 0 | bfd_put_32 (input_bfd, value, hit_data); |
1925 | 0 | return bfd_reloc_ok; |
1926 | 0 | } |
1927 | 0 | else if (r_type == R_MN10300_TLS_GOTIE |
1928 | 0 | || r_type == R_MN10300_TLS_GD |
1929 | 0 | || r_type == R_MN10300_TLS_LD) |
1930 | 0 | { |
1931 | 0 | bfd_put_32 (input_bfd, value, hit_data); |
1932 | 0 | return bfd_reloc_ok; |
1933 | 0 | } |
1934 | 0 | else if (r_type == R_MN10300_GOT32) |
1935 | 0 | { |
1936 | 0 | bfd_put_32 (input_bfd, value, hit_data); |
1937 | 0 | return bfd_reloc_ok; |
1938 | 0 | } |
1939 | 0 | else if (r_type == R_MN10300_GOT24) |
1940 | 0 | { |
1941 | 0 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
1942 | 0 | return bfd_reloc_overflow; |
1943 | | |
1944 | 0 | bfd_put_8 (input_bfd, value & 0xff, hit_data); |
1945 | 0 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); |
1946 | 0 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); |
1947 | 0 | return bfd_reloc_ok; |
1948 | 0 | } |
1949 | 0 | else if (r_type == R_MN10300_GOT16) |
1950 | 0 | { |
1951 | 0 | if ((long) value > 0x7fff || (long) value < -0x8000) |
1952 | 0 | return bfd_reloc_overflow; |
1953 | | |
1954 | 0 | bfd_put_16 (input_bfd, value, hit_data); |
1955 | 0 | return bfd_reloc_ok; |
1956 | 0 | } |
1957 | | /* Fall through. */ |
1958 | | |
1959 | 0 | default: |
1960 | 0 | return bfd_reloc_notsupported; |
1961 | 0 | } |
1962 | 0 | } Unexecuted instantiation: elf-m10300.c:mn10300_elf_final_link_relocate Unexecuted instantiation: elf32-am33lin.c:mn10300_elf_final_link_relocate |
1963 | | |
1964 | | /* Relocate an MN10300 ELF section. */ |
1965 | | |
1966 | | static int |
1967 | | mn10300_elf_relocate_section (bfd *output_bfd, |
1968 | | struct bfd_link_info *info, |
1969 | | bfd *input_bfd, |
1970 | | asection *input_section, |
1971 | | bfd_byte *contents, |
1972 | | Elf_Internal_Rela *relocs, |
1973 | | Elf_Internal_Sym *local_syms, |
1974 | | asection **local_sections) |
1975 | 0 | { |
1976 | 0 | Elf_Internal_Shdr *symtab_hdr; |
1977 | 0 | struct elf_link_hash_entry **sym_hashes; |
1978 | 0 | Elf_Internal_Rela *rel, *relend; |
1979 | 0 | Elf_Internal_Rela * trel; |
1980 | |
|
1981 | 0 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
1982 | 0 | sym_hashes = elf_sym_hashes (input_bfd); |
1983 | |
|
1984 | 0 | rel = relocs; |
1985 | 0 | relend = relocs + input_section->reloc_count; |
1986 | 0 | for (; rel < relend; rel++) |
1987 | 0 | { |
1988 | 0 | int r_type; |
1989 | 0 | reloc_howto_type *howto; |
1990 | 0 | unsigned long r_symndx; |
1991 | 0 | Elf_Internal_Sym *sym; |
1992 | 0 | asection *sec; |
1993 | 0 | struct elf32_mn10300_link_hash_entry *h; |
1994 | 0 | bfd_vma relocation; |
1995 | 0 | bfd_reloc_status_type r; |
1996 | 0 | int tls_r_type; |
1997 | 0 | bool unresolved_reloc = false; |
1998 | 0 | bool warned, ignored; |
1999 | 0 | struct elf_link_hash_entry * hh; |
2000 | |
|
2001 | 0 | relocation = 0; |
2002 | 0 | r_symndx = ELF32_R_SYM (rel->r_info); |
2003 | 0 | r_type = ELF32_R_TYPE (rel->r_info); |
2004 | 0 | howto = elf_mn10300_howto_table + r_type; |
2005 | | |
2006 | | /* Just skip the vtable gc relocs. */ |
2007 | 0 | if (r_type == R_MN10300_GNU_VTINHERIT |
2008 | 0 | || r_type == R_MN10300_GNU_VTENTRY) |
2009 | 0 | continue; |
2010 | | |
2011 | 0 | h = NULL; |
2012 | 0 | sym = NULL; |
2013 | 0 | sec = NULL; |
2014 | 0 | if (r_symndx < symtab_hdr->sh_info) |
2015 | 0 | hh = NULL; |
2016 | 0 | else |
2017 | 0 | { |
2018 | 0 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2019 | 0 | r_symndx, symtab_hdr, sym_hashes, |
2020 | 0 | hh, sec, relocation, |
2021 | 0 | unresolved_reloc, warned, ignored); |
2022 | 0 | } |
2023 | 0 | h = elf_mn10300_hash_entry (hh); |
2024 | |
|
2025 | 0 | tls_r_type = elf_mn10300_tls_transition (info, r_type, hh, input_section, 0); |
2026 | 0 | if (tls_r_type != r_type) |
2027 | 0 | { |
2028 | 0 | bool had_plt; |
2029 | |
|
2030 | 0 | had_plt = mn10300_do_tls_transition (input_bfd, r_type, tls_r_type, |
2031 | 0 | contents, rel->r_offset); |
2032 | 0 | r_type = tls_r_type; |
2033 | 0 | howto = elf_mn10300_howto_table + r_type; |
2034 | |
|
2035 | 0 | if (had_plt) |
2036 | 0 | for (trel = rel+1; trel < relend; trel++) |
2037 | 0 | if ((ELF32_R_TYPE (trel->r_info) == R_MN10300_PLT32 |
2038 | 0 | || ELF32_R_TYPE (trel->r_info) == R_MN10300_PCREL32) |
2039 | 0 | && rel->r_offset + had_plt == trel->r_offset) |
2040 | 0 | trel->r_info = ELF32_R_INFO (0, R_MN10300_NONE); |
2041 | 0 | } |
2042 | |
|
2043 | 0 | if (r_symndx < symtab_hdr->sh_info) |
2044 | 0 | { |
2045 | 0 | sym = local_syms + r_symndx; |
2046 | 0 | sec = local_sections[r_symndx]; |
2047 | 0 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
2048 | 0 | } |
2049 | 0 | else |
2050 | 0 | { |
2051 | 0 | if ((h->root.root.type == bfd_link_hash_defined |
2052 | 0 | || h->root.root.type == bfd_link_hash_defweak) |
2053 | 0 | && ( r_type == R_MN10300_GOTPC32 |
2054 | 0 | || r_type == R_MN10300_GOTPC16 |
2055 | 0 | || (( r_type == R_MN10300_PLT32 |
2056 | 0 | || r_type == R_MN10300_PLT16) |
2057 | 0 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL |
2058 | 0 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN |
2059 | 0 | && h->root.plt.offset != (bfd_vma) -1) |
2060 | 0 | || (( r_type == R_MN10300_GOT32 |
2061 | 0 | || r_type == R_MN10300_GOT24 |
2062 | 0 | || r_type == R_MN10300_TLS_GD |
2063 | 0 | || r_type == R_MN10300_TLS_LD |
2064 | 0 | || r_type == R_MN10300_TLS_GOTIE |
2065 | 0 | || r_type == R_MN10300_TLS_IE |
2066 | 0 | || r_type == R_MN10300_GOT16) |
2067 | 0 | && elf_hash_table (info)->dynamic_sections_created |
2068 | 0 | && !SYMBOL_REFERENCES_LOCAL (info, hh)) |
2069 | 0 | || (r_type == R_MN10300_32 |
2070 | 0 | && !SYMBOL_REFERENCES_LOCAL (info, hh) |
2071 | | /* _32 relocs in executables force _COPY relocs, |
2072 | | such that the address of the symbol ends up |
2073 | | being local. */ |
2074 | 0 | && (((input_section->flags & SEC_ALLOC) != 0 |
2075 | 0 | && !bfd_link_executable (info)) |
2076 | | /* DWARF will emit R_MN10300_32 relocations |
2077 | | in its sections against symbols defined |
2078 | | externally in shared libraries. We can't |
2079 | | do anything with them here. */ |
2080 | 0 | || ((input_section->flags & SEC_DEBUGGING) != 0 |
2081 | 0 | && h->root.def_dynamic))))) |
2082 | | /* In these cases, we don't need the relocation |
2083 | | value. We check specially because in some |
2084 | | obscure cases sec->output_section will be NULL. */ |
2085 | 0 | relocation = 0; |
2086 | | |
2087 | 0 | else if (!bfd_link_relocatable (info) && unresolved_reloc |
2088 | 0 | && _bfd_elf_section_offset (output_bfd, info, input_section, |
2089 | 0 | rel->r_offset) != (bfd_vma) -1) |
2090 | | |
2091 | 0 | _bfd_error_handler |
2092 | | /* xgettext:c-format */ |
2093 | 0 | (_("%pB(%pA+%#" PRIx64 "): " |
2094 | 0 | "unresolvable %s relocation against symbol `%s'"), |
2095 | 0 | input_bfd, |
2096 | 0 | input_section, |
2097 | 0 | (uint64_t) rel->r_offset, |
2098 | 0 | howto->name, |
2099 | 0 | h->root.root.root.string); |
2100 | 0 | } |
2101 | |
|
2102 | 0 | if (sec != NULL && discarded_section (sec)) |
2103 | 0 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
2104 | 0 | rel, 1, relend, howto, 0, contents); |
2105 | |
|
2106 | 0 | if (bfd_link_relocatable (info)) |
2107 | 0 | continue; |
2108 | | |
2109 | 0 | r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, |
2110 | 0 | input_section, |
2111 | 0 | contents, rel->r_offset, |
2112 | 0 | relocation, rel->r_addend, |
2113 | 0 | (struct elf_link_hash_entry *) h, |
2114 | 0 | r_symndx, |
2115 | 0 | info, sec, h == NULL); |
2116 | |
|
2117 | 0 | if (r != bfd_reloc_ok) |
2118 | 0 | { |
2119 | 0 | const char *name; |
2120 | 0 | const char *msg = NULL; |
2121 | |
|
2122 | 0 | if (h != NULL) |
2123 | 0 | name = h->root.root.root.string; |
2124 | 0 | else |
2125 | 0 | { |
2126 | 0 | name = (bfd_elf_string_from_elf_section |
2127 | 0 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); |
2128 | 0 | if (name == NULL || *name == '\0') |
2129 | 0 | name = bfd_section_name (sec); |
2130 | 0 | } |
2131 | |
|
2132 | 0 | switch (r) |
2133 | 0 | { |
2134 | 0 | case bfd_reloc_overflow: |
2135 | 0 | (*info->callbacks->reloc_overflow) |
2136 | 0 | (info, (h ? &h->root.root : NULL), name, howto->name, |
2137 | 0 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); |
2138 | 0 | break; |
2139 | | |
2140 | 0 | case bfd_reloc_undefined: |
2141 | 0 | (*info->callbacks->undefined_symbol) |
2142 | 0 | (info, name, input_bfd, input_section, rel->r_offset, true); |
2143 | 0 | break; |
2144 | | |
2145 | 0 | case bfd_reloc_outofrange: |
2146 | 0 | msg = _("internal error: out of range error"); |
2147 | 0 | goto common_error; |
2148 | | |
2149 | 0 | case bfd_reloc_notsupported: |
2150 | 0 | msg = _("internal error: unsupported relocation error"); |
2151 | 0 | goto common_error; |
2152 | | |
2153 | 0 | case bfd_reloc_dangerous: |
2154 | 0 | if (r_type == R_MN10300_PCREL32) |
2155 | 0 | msg = _("error: inappropriate relocation type for shared" |
2156 | 0 | " library (did you forget -fpic?)"); |
2157 | 0 | else if (r_type == R_MN10300_GOT32) |
2158 | | /* xgettext:c-format */ |
2159 | 0 | msg = _("%pB: taking the address of protected function" |
2160 | 0 | " '%s' cannot be done when making a shared library"); |
2161 | 0 | else |
2162 | 0 | msg = _("internal error: suspicious relocation type used" |
2163 | 0 | " in shared library"); |
2164 | 0 | goto common_error; |
2165 | | |
2166 | 0 | default: |
2167 | 0 | msg = _("internal error: unknown error"); |
2168 | | /* Fall through. */ |
2169 | |
|
2170 | 0 | common_error: |
2171 | 0 | _bfd_error_handler (msg, input_bfd, name); |
2172 | 0 | bfd_set_error (bfd_error_bad_value); |
2173 | 0 | return false; |
2174 | 0 | } |
2175 | 0 | } |
2176 | 0 | } |
2177 | | |
2178 | 0 | return true; |
2179 | 0 | } Unexecuted instantiation: elf-m10300.c:mn10300_elf_relocate_section Unexecuted instantiation: elf32-am33lin.c:mn10300_elf_relocate_section |
2180 | | |
2181 | | /* Finish initializing one hash table entry. */ |
2182 | | |
2183 | | static bool |
2184 | | elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry, |
2185 | | void * in_args) |
2186 | 0 | { |
2187 | 0 | struct elf32_mn10300_link_hash_entry *entry; |
2188 | 0 | struct bfd_link_info *link_info = (struct bfd_link_info *) in_args; |
2189 | 0 | unsigned int byte_count = 0; |
2190 | |
|
2191 | 0 | entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; |
2192 | | |
2193 | | /* If we already know we want to convert "call" to "calls" for calls |
2194 | | to this symbol, then return now. */ |
2195 | 0 | if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS) |
2196 | 0 | return true; |
2197 | | |
2198 | | /* If there are no named calls to this symbol, or there's nothing we |
2199 | | can move from the function itself into the "call" instruction, |
2200 | | then note that all "call" instructions should be converted into |
2201 | | "calls" instructions and return. If a symbol is available for |
2202 | | dynamic symbol resolution (overridable or overriding), avoid |
2203 | | custom calling conventions. */ |
2204 | 0 | if (entry->direct_calls == 0 |
2205 | 0 | || (entry->stack_size == 0 && entry->movm_args == 0) |
2206 | 0 | || (elf_hash_table (link_info)->dynamic_sections_created |
2207 | 0 | && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL |
2208 | 0 | && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN)) |
2209 | 0 | { |
2210 | | /* Make a note that we should convert "call" instructions to "calls" |
2211 | | instructions for calls to this symbol. */ |
2212 | 0 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; |
2213 | 0 | return true; |
2214 | 0 | } |
2215 | | |
2216 | | /* We may be able to move some instructions from the function itself into |
2217 | | the "call" instruction. Count how many bytes we might be able to |
2218 | | eliminate in the function itself. */ |
2219 | | |
2220 | | /* A movm instruction is two bytes. */ |
2221 | 0 | if (entry->movm_args) |
2222 | 0 | byte_count += 2; |
2223 | | |
2224 | | /* Count the insn to allocate stack space too. */ |
2225 | 0 | if (entry->stack_size > 0) |
2226 | 0 | { |
2227 | 0 | if (entry->stack_size <= 128) |
2228 | 0 | byte_count += 3; |
2229 | 0 | else |
2230 | 0 | byte_count += 4; |
2231 | 0 | } |
2232 | | |
2233 | | /* If using "call" will result in larger code, then turn all |
2234 | | the associated "call" instructions into "calls" instructions. */ |
2235 | 0 | if (byte_count < entry->direct_calls) |
2236 | 0 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; |
2237 | | |
2238 | | /* This routine never fails. */ |
2239 | 0 | return true; |
2240 | 0 | } Unexecuted instantiation: elf-m10300.c:elf32_mn10300_finish_hash_table_entry Unexecuted instantiation: elf32-am33lin.c:elf32_mn10300_finish_hash_table_entry |
2241 | | |
2242 | | /* Used to count hash table entries. */ |
2243 | | |
2244 | | static bool |
2245 | | elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED, |
2246 | | void * in_args) |
2247 | 0 | { |
2248 | 0 | int *count = (int *) in_args; |
2249 | |
|
2250 | 0 | (*count) ++; |
2251 | 0 | return true; |
2252 | 0 | } Unexecuted instantiation: elf-m10300.c:elf32_mn10300_count_hash_table_entries Unexecuted instantiation: elf32-am33lin.c:elf32_mn10300_count_hash_table_entries |
2253 | | |
2254 | | /* Used to enumerate hash table entries into a linear array. */ |
2255 | | |
2256 | | static bool |
2257 | | elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry, |
2258 | | void * in_args) |
2259 | 0 | { |
2260 | 0 | struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args; |
2261 | |
|
2262 | 0 | **ptr = gen_entry; |
2263 | 0 | (*ptr) ++; |
2264 | 0 | return true; |
2265 | 0 | } Unexecuted instantiation: elf-m10300.c:elf32_mn10300_list_hash_table_entries Unexecuted instantiation: elf32-am33lin.c:elf32_mn10300_list_hash_table_entries |
2266 | | |
2267 | | /* Used to sort the array created by the above. */ |
2268 | | |
2269 | | static int |
2270 | | sort_by_value (const void *va, const void *vb) |
2271 | 0 | { |
2272 | 0 | struct elf32_mn10300_link_hash_entry *a |
2273 | 0 | = *(struct elf32_mn10300_link_hash_entry **) va; |
2274 | 0 | struct elf32_mn10300_link_hash_entry *b |
2275 | 0 | = *(struct elf32_mn10300_link_hash_entry **) vb; |
2276 | |
|
2277 | 0 | return a->value - b->value; |
2278 | 0 | } Unexecuted instantiation: elf-m10300.c:sort_by_value Unexecuted instantiation: elf32-am33lin.c:sort_by_value |
2279 | | |
2280 | | /* Compute the stack size and movm arguments for the function |
2281 | | referred to by HASH at address ADDR in section with |
2282 | | contents CONTENTS, store the information in the hash table. */ |
2283 | | |
2284 | | static void |
2285 | | compute_function_info (bfd *abfd, |
2286 | | struct elf32_mn10300_link_hash_entry *hash, |
2287 | | bfd_vma addr, |
2288 | | unsigned char *contents) |
2289 | 0 | { |
2290 | 0 | unsigned char byte1, byte2; |
2291 | | /* We only care about a very small subset of the possible prologue |
2292 | | sequences here. Basically we look for: |
2293 | | |
2294 | | movm [d2,d3,a2,a3],sp (optional) |
2295 | | add <size>,sp (optional, and only for sizes which fit in an unsigned |
2296 | | 8 bit number) |
2297 | | |
2298 | | If we find anything else, we quit. */ |
2299 | | |
2300 | | /* Look for movm [regs],sp. */ |
2301 | 0 | byte1 = bfd_get_8 (abfd, contents + addr); |
2302 | 0 | byte2 = bfd_get_8 (abfd, contents + addr + 1); |
2303 | |
|
2304 | 0 | if (byte1 == 0xcf) |
2305 | 0 | { |
2306 | 0 | hash->movm_args = byte2; |
2307 | 0 | addr += 2; |
2308 | 0 | byte1 = bfd_get_8 (abfd, contents + addr); |
2309 | 0 | byte2 = bfd_get_8 (abfd, contents + addr + 1); |
2310 | 0 | } |
2311 | | |
2312 | | /* Now figure out how much stack space will be allocated by the movm |
2313 | | instruction. We need this kept separate from the function's normal |
2314 | | stack space. */ |
2315 | 0 | if (hash->movm_args) |
2316 | 0 | { |
2317 | | /* Space for d2. */ |
2318 | 0 | if (hash->movm_args & 0x80) |
2319 | 0 | hash->movm_stack_size += 4; |
2320 | | |
2321 | | /* Space for d3. */ |
2322 | 0 | if (hash->movm_args & 0x40) |
2323 | 0 | hash->movm_stack_size += 4; |
2324 | | |
2325 | | /* Space for a2. */ |
2326 | 0 | if (hash->movm_args & 0x20) |
2327 | 0 | hash->movm_stack_size += 4; |
2328 | | |
2329 | | /* Space for a3. */ |
2330 | 0 | if (hash->movm_args & 0x10) |
2331 | 0 | hash->movm_stack_size += 4; |
2332 | | |
2333 | | /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */ |
2334 | 0 | if (hash->movm_args & 0x08) |
2335 | 0 | hash->movm_stack_size += 8 * 4; |
2336 | |
|
2337 | 0 | if (bfd_get_mach (abfd) == bfd_mach_am33 |
2338 | 0 | || bfd_get_mach (abfd) == bfd_mach_am33_2) |
2339 | 0 | { |
2340 | | /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ |
2341 | 0 | if (hash->movm_args & 0x1) |
2342 | 0 | hash->movm_stack_size += 6 * 4; |
2343 | | |
2344 | | /* exreg1 space. e4, e5, e6, e7 */ |
2345 | 0 | if (hash->movm_args & 0x2) |
2346 | 0 | hash->movm_stack_size += 4 * 4; |
2347 | | |
2348 | | /* exreg0 space. e2, e3 */ |
2349 | 0 | if (hash->movm_args & 0x4) |
2350 | 0 | hash->movm_stack_size += 2 * 4; |
2351 | 0 | } |
2352 | 0 | } |
2353 | | |
2354 | | /* Now look for the two stack adjustment variants. */ |
2355 | 0 | if (byte1 == 0xf8 && byte2 == 0xfe) |
2356 | 0 | { |
2357 | 0 | int temp = bfd_get_8 (abfd, contents + addr + 2); |
2358 | 0 | temp = ((temp & 0xff) ^ (~0x7f)) + 0x80; |
2359 | |
|
2360 | 0 | hash->stack_size = -temp; |
2361 | 0 | } |
2362 | 0 | else if (byte1 == 0xfa && byte2 == 0xfe) |
2363 | 0 | { |
2364 | 0 | int temp = bfd_get_16 (abfd, contents + addr + 2); |
2365 | 0 | temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000; |
2366 | 0 | temp = -temp; |
2367 | |
|
2368 | 0 | if (temp < 255) |
2369 | 0 | hash->stack_size = temp; |
2370 | 0 | } |
2371 | | |
2372 | | /* If the total stack to be allocated by the call instruction is more |
2373 | | than 255 bytes, then we can't remove the stack adjustment by using |
2374 | | "call" (we might still be able to remove the "movm" instruction. */ |
2375 | 0 | if (hash->stack_size + hash->movm_stack_size > 255) |
2376 | 0 | hash->stack_size = 0; |
2377 | 0 | } Unexecuted instantiation: elf-m10300.c:compute_function_info Unexecuted instantiation: elf32-am33lin.c:compute_function_info |
2378 | | |
2379 | | /* Delete some bytes from a section while relaxing. */ |
2380 | | |
2381 | | static bool |
2382 | | mn10300_elf_relax_delete_bytes (bfd *abfd, |
2383 | | asection *sec, |
2384 | | bfd_vma addr, |
2385 | | int count) |
2386 | 0 | { |
2387 | 0 | Elf_Internal_Shdr *symtab_hdr; |
2388 | 0 | unsigned int sec_shndx; |
2389 | 0 | bfd_byte *contents; |
2390 | 0 | Elf_Internal_Rela *irel, *irelend; |
2391 | 0 | Elf_Internal_Rela *irelalign; |
2392 | 0 | bfd_vma toaddr; |
2393 | 0 | Elf_Internal_Sym *isym, *isymend; |
2394 | 0 | struct elf_link_hash_entry **sym_hashes; |
2395 | 0 | struct elf_link_hash_entry **end_hashes; |
2396 | 0 | unsigned int symcount; |
2397 | |
|
2398 | 0 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
2399 | |
|
2400 | 0 | contents = elf_section_data (sec)->this_hdr.contents; |
2401 | |
|
2402 | 0 | irelalign = NULL; |
2403 | 0 | toaddr = sec->size; |
2404 | |
|
2405 | 0 | irel = elf_section_data (sec)->relocs; |
2406 | 0 | irelend = irel + sec->reloc_count; |
2407 | |
|
2408 | 0 | if (sec->reloc_count > 0) |
2409 | 0 | { |
2410 | | /* If there is an align reloc at the end of the section ignore it. |
2411 | | GAS creates these relocs for reasons of its own, and they just |
2412 | | serve to keep the section artifically inflated. */ |
2413 | 0 | if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN) |
2414 | 0 | --irelend; |
2415 | | |
2416 | | /* The deletion must stop at the next ALIGN reloc for an alignment |
2417 | | power larger than, or not a multiple of, the number of bytes we |
2418 | | are deleting. */ |
2419 | 0 | for (; irel < irelend; irel++) |
2420 | 0 | { |
2421 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN |
2422 | 0 | && irel->r_offset > addr |
2423 | 0 | && irel->r_offset < toaddr) |
2424 | 0 | { |
2425 | 0 | int alignment = 1 << irel->r_addend; |
2426 | |
|
2427 | 0 | if (count < alignment |
2428 | 0 | || alignment % count != 0) |
2429 | 0 | { |
2430 | 0 | irelalign = irel; |
2431 | 0 | toaddr = irel->r_offset; |
2432 | 0 | break; |
2433 | 0 | } |
2434 | 0 | } |
2435 | 0 | } |
2436 | 0 | } |
2437 | | |
2438 | | /* Actually delete the bytes. */ |
2439 | 0 | memmove (contents + addr, contents + addr + count, |
2440 | 0 | (size_t) (toaddr - addr - count)); |
2441 | | |
2442 | | /* Adjust the section's size if we are shrinking it, or else |
2443 | | pad the bytes between the end of the shrunken region and |
2444 | | the start of the next region with NOP codes. */ |
2445 | 0 | if (irelalign == NULL) |
2446 | 0 | { |
2447 | 0 | sec->size -= count; |
2448 | | /* Include symbols at the end of the section, but |
2449 | | not at the end of a sub-region of the section. */ |
2450 | 0 | toaddr ++; |
2451 | 0 | } |
2452 | 0 | else |
2453 | 0 | { |
2454 | 0 | int i; |
2455 | |
|
2456 | 0 | #define NOP_OPCODE 0xcb |
2457 | |
|
2458 | 0 | for (i = 0; i < count; i ++) |
2459 | 0 | bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i); |
2460 | 0 | } |
2461 | | |
2462 | | /* Adjust all the relocs. */ |
2463 | 0 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) |
2464 | 0 | { |
2465 | | /* Get the new reloc address. */ |
2466 | 0 | if ((irel->r_offset > addr |
2467 | 0 | && irel->r_offset < toaddr) |
2468 | 0 | || (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN |
2469 | 0 | && irel->r_offset == toaddr)) |
2470 | 0 | irel->r_offset -= count; |
2471 | 0 | } |
2472 | | |
2473 | | /* Adjust the local symbols in the section, reducing their value |
2474 | | by the number of bytes deleted. Note - symbols within the deleted |
2475 | | region are moved to the address of the start of the region, which |
2476 | | actually means that they will address the byte beyond the end of |
2477 | | the region once the deletion has been completed. */ |
2478 | 0 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2479 | 0 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; |
2480 | 0 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) |
2481 | 0 | { |
2482 | 0 | if (isym->st_shndx == sec_shndx |
2483 | 0 | && isym->st_value > addr |
2484 | 0 | && isym->st_value < toaddr) |
2485 | 0 | { |
2486 | 0 | if (isym->st_value < addr + count) |
2487 | 0 | isym->st_value = addr; |
2488 | 0 | else |
2489 | 0 | isym->st_value -= count; |
2490 | 0 | } |
2491 | | /* Adjust the function symbol's size as well. */ |
2492 | 0 | else if (isym->st_shndx == sec_shndx |
2493 | 0 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC |
2494 | 0 | && isym->st_value + isym->st_size > addr |
2495 | 0 | && isym->st_value + isym->st_size < toaddr) |
2496 | 0 | isym->st_size -= count; |
2497 | 0 | } |
2498 | | |
2499 | | /* Now adjust the global symbols defined in this section. */ |
2500 | 0 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
2501 | 0 | - symtab_hdr->sh_info); |
2502 | 0 | sym_hashes = elf_sym_hashes (abfd); |
2503 | 0 | end_hashes = sym_hashes + symcount; |
2504 | 0 | for (; sym_hashes < end_hashes; sym_hashes++) |
2505 | 0 | { |
2506 | 0 | struct elf_link_hash_entry *sym_hash = *sym_hashes; |
2507 | |
|
2508 | 0 | if ((sym_hash->root.type == bfd_link_hash_defined |
2509 | 0 | || sym_hash->root.type == bfd_link_hash_defweak) |
2510 | 0 | && sym_hash->root.u.def.section == sec |
2511 | 0 | && sym_hash->root.u.def.value > addr |
2512 | 0 | && sym_hash->root.u.def.value < toaddr) |
2513 | 0 | { |
2514 | 0 | if (sym_hash->root.u.def.value < addr + count) |
2515 | 0 | sym_hash->root.u.def.value = addr; |
2516 | 0 | else |
2517 | 0 | sym_hash->root.u.def.value -= count; |
2518 | 0 | } |
2519 | | /* Adjust the function symbol's size as well. */ |
2520 | 0 | else if (sym_hash->root.type == bfd_link_hash_defined |
2521 | 0 | && sym_hash->root.u.def.section == sec |
2522 | 0 | && sym_hash->type == STT_FUNC |
2523 | 0 | && sym_hash->root.u.def.value + sym_hash->size > addr |
2524 | 0 | && sym_hash->root.u.def.value + sym_hash->size < toaddr) |
2525 | 0 | sym_hash->size -= count; |
2526 | 0 | } |
2527 | | |
2528 | | /* See if we can move the ALIGN reloc forward. |
2529 | | We have adjusted r_offset for it already. */ |
2530 | 0 | if (irelalign != NULL) |
2531 | 0 | { |
2532 | 0 | bfd_vma alignto, alignaddr; |
2533 | |
|
2534 | 0 | if ((int) irelalign->r_addend > 0) |
2535 | 0 | { |
2536 | | /* This is the old address. */ |
2537 | 0 | alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend); |
2538 | | /* This is where the align points to now. */ |
2539 | 0 | alignaddr = BFD_ALIGN (irelalign->r_offset, |
2540 | 0 | 1 << irelalign->r_addend); |
2541 | 0 | if (alignaddr < alignto) |
2542 | | /* Tail recursion. */ |
2543 | 0 | return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr, |
2544 | 0 | (int) (alignto - alignaddr)); |
2545 | 0 | } |
2546 | 0 | } |
2547 | | |
2548 | 0 | return true; |
2549 | 0 | } Unexecuted instantiation: elf-m10300.c:mn10300_elf_relax_delete_bytes Unexecuted instantiation: elf32-am33lin.c:mn10300_elf_relax_delete_bytes |
2550 | | |
2551 | | /* Return TRUE if a symbol exists at the given address, else return |
2552 | | FALSE. */ |
2553 | | |
2554 | | static bool |
2555 | | mn10300_elf_symbol_address_p (bfd *abfd, |
2556 | | asection *sec, |
2557 | | Elf_Internal_Sym *isym, |
2558 | | bfd_vma addr) |
2559 | 0 | { |
2560 | 0 | Elf_Internal_Shdr *symtab_hdr; |
2561 | 0 | unsigned int sec_shndx; |
2562 | 0 | Elf_Internal_Sym *isymend; |
2563 | 0 | struct elf_link_hash_entry **sym_hashes; |
2564 | 0 | struct elf_link_hash_entry **end_hashes; |
2565 | 0 | unsigned int symcount; |
2566 | |
|
2567 | 0 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
2568 | | |
2569 | | /* Examine all the symbols. */ |
2570 | 0 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2571 | 0 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) |
2572 | 0 | if (isym->st_shndx == sec_shndx |
2573 | 0 | && isym->st_value == addr) |
2574 | 0 | return true; |
2575 | | |
2576 | 0 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
2577 | 0 | - symtab_hdr->sh_info); |
2578 | 0 | sym_hashes = elf_sym_hashes (abfd); |
2579 | 0 | end_hashes = sym_hashes + symcount; |
2580 | 0 | for (; sym_hashes < end_hashes; sym_hashes++) |
2581 | 0 | { |
2582 | 0 | struct elf_link_hash_entry *sym_hash = *sym_hashes; |
2583 | |
|
2584 | 0 | if ((sym_hash->root.type == bfd_link_hash_defined |
2585 | 0 | || sym_hash->root.type == bfd_link_hash_defweak) |
2586 | 0 | && sym_hash->root.u.def.section == sec |
2587 | 0 | && sym_hash->root.u.def.value == addr) |
2588 | 0 | return true; |
2589 | 0 | } |
2590 | | |
2591 | 0 | return false; |
2592 | 0 | } Unexecuted instantiation: elf-m10300.c:mn10300_elf_symbol_address_p Unexecuted instantiation: elf32-am33lin.c:mn10300_elf_symbol_address_p |
2593 | | |
2594 | | /* This function handles relaxing for the mn10300. |
2595 | | |
2596 | | There are quite a few relaxing opportunities available on the mn10300: |
2597 | | |
2598 | | * calls:32 -> calls:16 2 bytes |
2599 | | * call:32 -> call:16 2 bytes |
2600 | | |
2601 | | * call:32 -> calls:32 1 byte |
2602 | | * call:16 -> calls:16 1 byte |
2603 | | * These are done anytime using "calls" would result |
2604 | | in smaller code, or when necessary to preserve the |
2605 | | meaning of the program. |
2606 | | |
2607 | | * call:32 varies |
2608 | | * call:16 |
2609 | | * In some circumstances we can move instructions |
2610 | | from a function prologue into a "call" instruction. |
2611 | | This is only done if the resulting code is no larger |
2612 | | than the original code. |
2613 | | |
2614 | | * jmp:32 -> jmp:16 2 bytes |
2615 | | * jmp:16 -> bra:8 1 byte |
2616 | | |
2617 | | * If the previous instruction is a conditional branch |
2618 | | around the jump/bra, we may be able to reverse its condition |
2619 | | and change its target to the jump's target. The jump/bra |
2620 | | can then be deleted. 2 bytes |
2621 | | |
2622 | | * mov abs32 -> mov abs16 1 or 2 bytes |
2623 | | |
2624 | | * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes |
2625 | | - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes |
2626 | | |
2627 | | * Most instructions which accept d32 can relax to d16 1 or 2 bytes |
2628 | | - Most instructions which accept d16 can relax to d8 1 or 2 bytes |
2629 | | |
2630 | | We don't handle imm16->imm8 or d16->d8 as they're very rare |
2631 | | and somewhat more difficult to support. */ |
2632 | | |
2633 | | static bool |
2634 | | mn10300_elf_relax_section (bfd *abfd, |
2635 | | asection *sec, |
2636 | | struct bfd_link_info *link_info, |
2637 | | bool *again) |
2638 | 0 | { |
2639 | 0 | Elf_Internal_Shdr *symtab_hdr; |
2640 | 0 | Elf_Internal_Rela *internal_relocs = NULL; |
2641 | 0 | Elf_Internal_Rela *irel, *irelend; |
2642 | 0 | bfd_byte *contents = NULL; |
2643 | 0 | Elf_Internal_Sym *isymbuf = NULL; |
2644 | 0 | struct elf32_mn10300_link_hash_table *hash_table; |
2645 | 0 | asection *section = sec; |
2646 | 0 | bfd_vma align_gap_adjustment; |
2647 | |
|
2648 | 0 | if (bfd_link_relocatable (link_info)) |
2649 | 0 | (*link_info->callbacks->einfo) |
2650 | 0 | (_("%P%F: --relax and -r may not be used together\n")); |
2651 | | |
2652 | | /* Assume nothing changes. */ |
2653 | 0 | *again = false; |
2654 | | |
2655 | | /* We need a pointer to the mn10300 specific hash table. */ |
2656 | 0 | hash_table = elf32_mn10300_hash_table (link_info); |
2657 | 0 | if (hash_table == NULL) |
2658 | 0 | return false; |
2659 | | |
2660 | | /* Initialize fields in each hash table entry the first time through. */ |
2661 | 0 | if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0) |
2662 | 0 | { |
2663 | 0 | bfd *input_bfd; |
2664 | | |
2665 | | /* Iterate over all the input bfds. */ |
2666 | 0 | for (input_bfd = link_info->input_bfds; |
2667 | 0 | input_bfd != NULL; |
2668 | 0 | input_bfd = input_bfd->link.next) |
2669 | 0 | { |
2670 | | /* We're going to need all the symbols for each bfd. */ |
2671 | 0 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
2672 | 0 | if (symtab_hdr->sh_info != 0) |
2673 | 0 | { |
2674 | 0 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2675 | 0 | if (isymbuf == NULL) |
2676 | 0 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, |
2677 | 0 | symtab_hdr->sh_info, 0, |
2678 | 0 | NULL, NULL, NULL); |
2679 | 0 | if (isymbuf == NULL) |
2680 | 0 | goto error_return; |
2681 | 0 | } |
2682 | | |
2683 | | /* Iterate over each section in this bfd. */ |
2684 | 0 | for (section = input_bfd->sections; |
2685 | 0 | section != NULL; |
2686 | 0 | section = section->next) |
2687 | 0 | { |
2688 | 0 | struct elf32_mn10300_link_hash_entry *hash; |
2689 | 0 | asection *sym_sec = NULL; |
2690 | 0 | const char *sym_name; |
2691 | 0 | char *new_name; |
2692 | | |
2693 | | /* If there's nothing to do in this section, skip it. */ |
2694 | 0 | if (! ((section->flags & SEC_RELOC) != 0 |
2695 | 0 | && section->reloc_count != 0)) |
2696 | 0 | continue; |
2697 | 0 | if ((section->flags & SEC_ALLOC) == 0 |
2698 | 0 | || (section->flags & SEC_HAS_CONTENTS) == 0) |
2699 | 0 | continue; |
2700 | | |
2701 | | /* Get cached copy of section contents if it exists. */ |
2702 | 0 | if (elf_section_data (section)->this_hdr.contents != NULL) |
2703 | 0 | contents = elf_section_data (section)->this_hdr.contents; |
2704 | 0 | else if (section->size != 0) |
2705 | 0 | { |
2706 | | /* Go get them off disk. */ |
2707 | 0 | if (!bfd_malloc_and_get_section (input_bfd, section, |
2708 | 0 | &contents)) |
2709 | 0 | goto error_return; |
2710 | 0 | } |
2711 | 0 | else |
2712 | 0 | contents = NULL; |
2713 | | |
2714 | | /* If there aren't any relocs, then there's nothing to do. */ |
2715 | 0 | if ((section->flags & SEC_RELOC) != 0 |
2716 | 0 | && section->reloc_count != 0) |
2717 | 0 | { |
2718 | | /* Get a copy of the native relocations. */ |
2719 | 0 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, |
2720 | 0 | NULL, NULL, |
2721 | 0 | link_info->keep_memory); |
2722 | 0 | if (internal_relocs == NULL) |
2723 | 0 | goto error_return; |
2724 | | |
2725 | | /* Now examine each relocation. */ |
2726 | 0 | irel = internal_relocs; |
2727 | 0 | irelend = irel + section->reloc_count; |
2728 | 0 | for (; irel < irelend; irel++) |
2729 | 0 | { |
2730 | 0 | long r_type; |
2731 | 0 | unsigned long r_index; |
2732 | 0 | unsigned char code; |
2733 | |
|
2734 | 0 | r_type = ELF32_R_TYPE (irel->r_info); |
2735 | 0 | r_index = ELF32_R_SYM (irel->r_info); |
2736 | |
|
2737 | 0 | if (r_type < 0 || r_type >= (int) R_MN10300_MAX) |
2738 | 0 | goto error_return; |
2739 | | |
2740 | | /* We need the name and hash table entry of the target |
2741 | | symbol! */ |
2742 | 0 | hash = NULL; |
2743 | 0 | sym_sec = NULL; |
2744 | |
|
2745 | 0 | if (r_index < symtab_hdr->sh_info) |
2746 | 0 | { |
2747 | | /* A local symbol. */ |
2748 | 0 | Elf_Internal_Sym *isym; |
2749 | 0 | struct elf_link_hash_table *elftab; |
2750 | 0 | size_t amt; |
2751 | |
|
2752 | 0 | isym = isymbuf + r_index; |
2753 | 0 | if (isym->st_shndx == SHN_UNDEF) |
2754 | 0 | sym_sec = bfd_und_section_ptr; |
2755 | 0 | else if (isym->st_shndx == SHN_ABS) |
2756 | 0 | sym_sec = bfd_abs_section_ptr; |
2757 | 0 | else if (isym->st_shndx == SHN_COMMON) |
2758 | 0 | sym_sec = bfd_com_section_ptr; |
2759 | 0 | else |
2760 | 0 | sym_sec |
2761 | 0 | = bfd_section_from_elf_index (input_bfd, |
2762 | 0 | isym->st_shndx); |
2763 | |
|
2764 | 0 | sym_name |
2765 | 0 | = bfd_elf_string_from_elf_section (input_bfd, |
2766 | 0 | (symtab_hdr |
2767 | 0 | ->sh_link), |
2768 | 0 | isym->st_name); |
2769 | | |
2770 | | /* If it isn't a function, then we don't care |
2771 | | about it. */ |
2772 | 0 | if (ELF_ST_TYPE (isym->st_info) != STT_FUNC) |
2773 | 0 | continue; |
2774 | | |
2775 | | /* Tack on an ID so we can uniquely identify this |
2776 | | local symbol in the global hash table. */ |
2777 | 0 | amt = strlen (sym_name) + 10; |
2778 | 0 | new_name = bfd_malloc (amt); |
2779 | 0 | if (new_name == NULL) |
2780 | 0 | goto error_return; |
2781 | | |
2782 | 0 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
2783 | 0 | sym_name = new_name; |
2784 | |
|
2785 | 0 | elftab = &hash_table->static_hash_table->root; |
2786 | 0 | hash = ((struct elf32_mn10300_link_hash_entry *) |
2787 | 0 | elf_link_hash_lookup (elftab, sym_name, |
2788 | 0 | true, true, false)); |
2789 | 0 | free (new_name); |
2790 | 0 | } |
2791 | 0 | else |
2792 | 0 | { |
2793 | 0 | r_index -= symtab_hdr->sh_info; |
2794 | 0 | hash = (struct elf32_mn10300_link_hash_entry *) |
2795 | 0 | elf_sym_hashes (input_bfd)[r_index]; |
2796 | 0 | } |
2797 | | |
2798 | 0 | sym_name = hash->root.root.root.string; |
2799 | 0 | if ((section->flags & SEC_CODE) != 0) |
2800 | 0 | { |
2801 | | /* If this is not a "call" instruction, then we |
2802 | | should convert "call" instructions to "calls" |
2803 | | instructions. */ |
2804 | 0 | code = bfd_get_8 (input_bfd, |
2805 | 0 | contents + irel->r_offset - 1); |
2806 | 0 | if (code != 0xdd && code != 0xcd) |
2807 | 0 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; |
2808 | 0 | } |
2809 | | |
2810 | | /* If this is a jump/call, then bump the |
2811 | | direct_calls counter. Else force "call" to |
2812 | | "calls" conversions. */ |
2813 | 0 | if (r_type == R_MN10300_PCREL32 |
2814 | 0 | || r_type == R_MN10300_PLT32 |
2815 | 0 | || r_type == R_MN10300_PLT16 |
2816 | 0 | || r_type == R_MN10300_PCREL16) |
2817 | 0 | hash->direct_calls++; |
2818 | 0 | else |
2819 | 0 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; |
2820 | 0 | } |
2821 | 0 | } |
2822 | | |
2823 | | /* Now look at the actual contents to get the stack size, |
2824 | | and a list of what registers were saved in the prologue |
2825 | | (ie movm_args). */ |
2826 | 0 | if ((section->flags & SEC_CODE) != 0) |
2827 | 0 | { |
2828 | 0 | Elf_Internal_Sym *isym, *isymend; |
2829 | 0 | unsigned int sec_shndx; |
2830 | 0 | struct elf_link_hash_entry **hashes; |
2831 | 0 | struct elf_link_hash_entry **end_hashes; |
2832 | 0 | unsigned int symcount; |
2833 | |
|
2834 | 0 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2835 | 0 | section); |
2836 | |
|
2837 | 0 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
2838 | 0 | - symtab_hdr->sh_info); |
2839 | 0 | hashes = elf_sym_hashes (input_bfd); |
2840 | 0 | end_hashes = hashes + symcount; |
2841 | | |
2842 | | /* Look at each function defined in this section and |
2843 | | update info for that function. */ |
2844 | 0 | isymend = isymbuf + symtab_hdr->sh_info; |
2845 | 0 | for (isym = isymbuf; isym < isymend; isym++) |
2846 | 0 | { |
2847 | 0 | if (isym->st_shndx == sec_shndx |
2848 | 0 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
2849 | 0 | { |
2850 | 0 | struct elf_link_hash_table *elftab; |
2851 | 0 | size_t amt; |
2852 | 0 | struct elf_link_hash_entry **lhashes = hashes; |
2853 | | |
2854 | | /* Skip a local symbol if it aliases a |
2855 | | global one. */ |
2856 | 0 | for (; lhashes < end_hashes; lhashes++) |
2857 | 0 | { |
2858 | 0 | hash = (struct elf32_mn10300_link_hash_entry *) *lhashes; |
2859 | 0 | if ((hash->root.root.type == bfd_link_hash_defined |
2860 | 0 | || hash->root.root.type == bfd_link_hash_defweak) |
2861 | 0 | && hash->root.root.u.def.section == section |
2862 | 0 | && hash->root.type == STT_FUNC |
2863 | 0 | && hash->root.root.u.def.value == isym->st_value) |
2864 | 0 | break; |
2865 | 0 | } |
2866 | 0 | if (lhashes != end_hashes) |
2867 | 0 | continue; |
2868 | | |
2869 | 0 | if (isym->st_shndx == SHN_UNDEF) |
2870 | 0 | sym_sec = bfd_und_section_ptr; |
2871 | 0 | else if (isym->st_shndx == SHN_ABS) |
2872 | 0 | sym_sec = bfd_abs_section_ptr; |
2873 | 0 | else if (isym->st_shndx == SHN_COMMON) |
2874 | 0 | sym_sec = bfd_com_section_ptr; |
2875 | 0 | else |
2876 | 0 | sym_sec |
2877 | 0 | = bfd_section_from_elf_index (input_bfd, |
2878 | 0 | isym->st_shndx); |
2879 | |
|
2880 | 0 | sym_name = (bfd_elf_string_from_elf_section |
2881 | 0 | (input_bfd, symtab_hdr->sh_link, |
2882 | 0 | isym->st_name)); |
2883 | | |
2884 | | /* Tack on an ID so we can uniquely identify this |
2885 | | local symbol in the global hash table. */ |
2886 | 0 | amt = strlen (sym_name) + 10; |
2887 | 0 | new_name = bfd_malloc (amt); |
2888 | 0 | if (new_name == NULL) |
2889 | 0 | goto error_return; |
2890 | | |
2891 | 0 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
2892 | 0 | sym_name = new_name; |
2893 | |
|
2894 | 0 | elftab = &hash_table->static_hash_table->root; |
2895 | 0 | hash = ((struct elf32_mn10300_link_hash_entry *) |
2896 | 0 | elf_link_hash_lookup (elftab, sym_name, |
2897 | 0 | true, true, false)); |
2898 | 0 | free (new_name); |
2899 | 0 | compute_function_info (input_bfd, hash, |
2900 | 0 | isym->st_value, contents); |
2901 | 0 | hash->value = isym->st_value; |
2902 | 0 | } |
2903 | 0 | } |
2904 | | |
2905 | 0 | for (; hashes < end_hashes; hashes++) |
2906 | 0 | { |
2907 | 0 | hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
2908 | 0 | if ((hash->root.root.type == bfd_link_hash_defined |
2909 | 0 | || hash->root.root.type == bfd_link_hash_defweak) |
2910 | 0 | && hash->root.root.u.def.section == section |
2911 | 0 | && hash->root.type == STT_FUNC) |
2912 | 0 | compute_function_info (input_bfd, hash, |
2913 | 0 | (hash)->root.root.u.def.value, |
2914 | 0 | contents); |
2915 | 0 | } |
2916 | 0 | } |
2917 | | |
2918 | | /* Cache or free any memory we allocated for the relocs. */ |
2919 | 0 | if (elf_section_data (section)->relocs != internal_relocs) |
2920 | 0 | free (internal_relocs); |
2921 | 0 | internal_relocs = NULL; |
2922 | | |
2923 | | /* Cache or free any memory we allocated for the contents. */ |
2924 | 0 | if (contents != NULL |
2925 | 0 | && elf_section_data (section)->this_hdr.contents != contents) |
2926 | 0 | { |
2927 | 0 | if (! link_info->keep_memory) |
2928 | 0 | free (contents); |
2929 | 0 | else |
2930 | 0 | { |
2931 | | /* Cache the section contents for elf_link_input_bfd. */ |
2932 | 0 | elf_section_data (section)->this_hdr.contents = contents; |
2933 | 0 | } |
2934 | 0 | } |
2935 | 0 | contents = NULL; |
2936 | 0 | } |
2937 | | |
2938 | | /* Cache or free any memory we allocated for the symbols. */ |
2939 | 0 | if (isymbuf != NULL |
2940 | 0 | && symtab_hdr->contents != (unsigned char *) isymbuf) |
2941 | 0 | { |
2942 | 0 | if (! link_info->keep_memory) |
2943 | 0 | free (isymbuf); |
2944 | 0 | else |
2945 | 0 | { |
2946 | | /* Cache the symbols for elf_link_input_bfd. */ |
2947 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
2948 | 0 | } |
2949 | 0 | } |
2950 | 0 | isymbuf = NULL; |
2951 | 0 | } |
2952 | | |
2953 | | /* Now iterate on each symbol in the hash table and perform |
2954 | | the final initialization steps on each. */ |
2955 | 0 | elf32_mn10300_link_hash_traverse (hash_table, |
2956 | 0 | elf32_mn10300_finish_hash_table_entry, |
2957 | 0 | link_info); |
2958 | 0 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, |
2959 | 0 | elf32_mn10300_finish_hash_table_entry, |
2960 | 0 | link_info); |
2961 | |
|
2962 | 0 | { |
2963 | | /* This section of code collects all our local symbols, sorts |
2964 | | them by value, and looks for multiple symbols referring to |
2965 | | the same address. For those symbols, the flags are merged. |
2966 | | At this point, the only flag that can be set is |
2967 | | MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags |
2968 | | together. */ |
2969 | 0 | int static_count = 0, i; |
2970 | 0 | struct elf32_mn10300_link_hash_entry **entries; |
2971 | 0 | struct elf32_mn10300_link_hash_entry **ptr; |
2972 | |
|
2973 | 0 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, |
2974 | 0 | elf32_mn10300_count_hash_table_entries, |
2975 | 0 | &static_count); |
2976 | |
|
2977 | 0 | entries = bfd_malloc (static_count * sizeof (* ptr)); |
2978 | |
|
2979 | 0 | ptr = entries; |
2980 | 0 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, |
2981 | 0 | elf32_mn10300_list_hash_table_entries, |
2982 | 0 | & ptr); |
2983 | |
|
2984 | 0 | qsort (entries, static_count, sizeof (entries[0]), sort_by_value); |
2985 | |
|
2986 | 0 | for (i = 0; i < static_count - 1; i++) |
2987 | 0 | if (entries[i]->value && entries[i]->value == entries[i+1]->value) |
2988 | 0 | { |
2989 | 0 | int v = entries[i]->flags; |
2990 | 0 | int j; |
2991 | |
|
2992 | 0 | for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++) |
2993 | 0 | v |= entries[j]->flags; |
2994 | |
|
2995 | 0 | for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++) |
2996 | 0 | entries[j]->flags = v; |
2997 | |
|
2998 | 0 | i = j - 1; |
2999 | 0 | } |
3000 | 0 | } |
3001 | | |
3002 | | /* All entries in the hash table are fully initialized. */ |
3003 | 0 | hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; |
3004 | | |
3005 | | /* Now that everything has been initialized, go through each |
3006 | | code section and delete any prologue insns which will be |
3007 | | redundant because their operations will be performed by |
3008 | | a "call" instruction. */ |
3009 | 0 | for (input_bfd = link_info->input_bfds; |
3010 | 0 | input_bfd != NULL; |
3011 | 0 | input_bfd = input_bfd->link.next) |
3012 | 0 | { |
3013 | | /* We're going to need all the local symbols for each bfd. */ |
3014 | 0 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3015 | 0 | if (symtab_hdr->sh_info != 0) |
3016 | 0 | { |
3017 | 0 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
3018 | 0 | if (isymbuf == NULL) |
3019 | 0 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, |
3020 | 0 | symtab_hdr->sh_info, 0, |
3021 | 0 | NULL, NULL, NULL); |
3022 | 0 | if (isymbuf == NULL) |
3023 | 0 | goto error_return; |
3024 | 0 | } |
3025 | | |
3026 | | /* Walk over each section in this bfd. */ |
3027 | 0 | for (section = input_bfd->sections; |
3028 | 0 | section != NULL; |
3029 | 0 | section = section->next) |
3030 | 0 | { |
3031 | 0 | unsigned int sec_shndx; |
3032 | 0 | Elf_Internal_Sym *isym, *isymend; |
3033 | 0 | struct elf_link_hash_entry **hashes; |
3034 | 0 | struct elf_link_hash_entry **end_hashes; |
3035 | 0 | unsigned int symcount; |
3036 | | |
3037 | | /* Skip non-code sections and empty sections. */ |
3038 | 0 | if ((section->flags & SEC_CODE) == 0 |
3039 | 0 | || (section->flags & SEC_HAS_CONTENTS) == 0 |
3040 | 0 | || section->size == 0) |
3041 | 0 | continue; |
3042 | | |
3043 | 0 | if (section->reloc_count != 0) |
3044 | 0 | { |
3045 | | /* Get a copy of the native relocations. */ |
3046 | 0 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section, |
3047 | 0 | NULL, NULL, |
3048 | 0 | link_info->keep_memory); |
3049 | 0 | if (internal_relocs == NULL) |
3050 | 0 | goto error_return; |
3051 | 0 | } |
3052 | | |
3053 | | /* Get cached copy of section contents if it exists. */ |
3054 | 0 | if (elf_section_data (section)->this_hdr.contents != NULL) |
3055 | 0 | contents = elf_section_data (section)->this_hdr.contents; |
3056 | 0 | else |
3057 | 0 | { |
3058 | | /* Go get them off disk. */ |
3059 | 0 | if (!bfd_malloc_and_get_section (input_bfd, section, |
3060 | 0 | &contents)) |
3061 | 0 | goto error_return; |
3062 | 0 | } |
3063 | | |
3064 | 0 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
3065 | 0 | section); |
3066 | | |
3067 | | /* Now look for any function in this section which needs |
3068 | | insns deleted from its prologue. */ |
3069 | 0 | isymend = isymbuf + symtab_hdr->sh_info; |
3070 | 0 | for (isym = isymbuf; isym < isymend; isym++) |
3071 | 0 | { |
3072 | 0 | struct elf32_mn10300_link_hash_entry *sym_hash; |
3073 | 0 | asection *sym_sec = NULL; |
3074 | 0 | const char *sym_name; |
3075 | 0 | char *new_name; |
3076 | 0 | struct elf_link_hash_table *elftab; |
3077 | 0 | size_t amt; |
3078 | |
|
3079 | 0 | if (isym->st_shndx != sec_shndx) |
3080 | 0 | continue; |
3081 | | |
3082 | 0 | if (isym->st_shndx == SHN_UNDEF) |
3083 | 0 | sym_sec = bfd_und_section_ptr; |
3084 | 0 | else if (isym->st_shndx == SHN_ABS) |
3085 | 0 | sym_sec = bfd_abs_section_ptr; |
3086 | 0 | else if (isym->st_shndx == SHN_COMMON) |
3087 | 0 | sym_sec = bfd_com_section_ptr; |
3088 | 0 | else |
3089 | 0 | sym_sec |
3090 | 0 | = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
3091 | |
|
3092 | 0 | sym_name |
3093 | 0 | = bfd_elf_string_from_elf_section (input_bfd, |
3094 | 0 | symtab_hdr->sh_link, |
3095 | 0 | isym->st_name); |
3096 | | |
3097 | | /* Tack on an ID so we can uniquely identify this |
3098 | | local symbol in the global hash table. */ |
3099 | 0 | amt = strlen (sym_name) + 10; |
3100 | 0 | new_name = bfd_malloc (amt); |
3101 | 0 | if (new_name == NULL) |
3102 | 0 | goto error_return; |
3103 | 0 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
3104 | 0 | sym_name = new_name; |
3105 | |
|
3106 | 0 | elftab = & hash_table->static_hash_table->root; |
3107 | 0 | sym_hash = (struct elf32_mn10300_link_hash_entry *) |
3108 | 0 | elf_link_hash_lookup (elftab, sym_name, |
3109 | 0 | false, false, false); |
3110 | |
|
3111 | 0 | free (new_name); |
3112 | 0 | if (sym_hash == NULL) |
3113 | 0 | continue; |
3114 | | |
3115 | 0 | if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) |
3116 | 0 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) |
3117 | 0 | { |
3118 | 0 | int bytes = 0; |
3119 | | |
3120 | | /* Note that we've changed things. */ |
3121 | 0 | elf_section_data (section)->relocs = internal_relocs; |
3122 | 0 | elf_section_data (section)->this_hdr.contents = contents; |
3123 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
3124 | | |
3125 | | /* Count how many bytes we're going to delete. */ |
3126 | 0 | if (sym_hash->movm_args) |
3127 | 0 | bytes += 2; |
3128 | |
|
3129 | 0 | if (sym_hash->stack_size > 0) |
3130 | 0 | { |
3131 | 0 | if (sym_hash->stack_size <= 128) |
3132 | 0 | bytes += 3; |
3133 | 0 | else |
3134 | 0 | bytes += 4; |
3135 | 0 | } |
3136 | | |
3137 | | /* Note that we've deleted prologue bytes for this |
3138 | | function. */ |
3139 | 0 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; |
3140 | | |
3141 | | /* Actually delete the bytes. */ |
3142 | 0 | if (!mn10300_elf_relax_delete_bytes (input_bfd, |
3143 | 0 | section, |
3144 | 0 | isym->st_value, |
3145 | 0 | bytes)) |
3146 | 0 | goto error_return; |
3147 | | |
3148 | | /* Something changed. Not strictly necessary, but |
3149 | | may lead to more relaxing opportunities. */ |
3150 | 0 | *again = true; |
3151 | 0 | } |
3152 | 0 | } |
3153 | | |
3154 | | /* Look for any global functions in this section which |
3155 | | need insns deleted from their prologues. */ |
3156 | 0 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
3157 | 0 | - symtab_hdr->sh_info); |
3158 | 0 | hashes = elf_sym_hashes (input_bfd); |
3159 | 0 | end_hashes = hashes + symcount; |
3160 | 0 | for (; hashes < end_hashes; hashes++) |
3161 | 0 | { |
3162 | 0 | struct elf32_mn10300_link_hash_entry *sym_hash; |
3163 | |
|
3164 | 0 | sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
3165 | 0 | if ((sym_hash->root.root.type == bfd_link_hash_defined |
3166 | 0 | || sym_hash->root.root.type == bfd_link_hash_defweak) |
3167 | 0 | && sym_hash->root.root.u.def.section == section |
3168 | 0 | && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) |
3169 | 0 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) |
3170 | 0 | { |
3171 | 0 | int bytes = 0; |
3172 | 0 | bfd_vma symval; |
3173 | 0 | struct elf_link_hash_entry **hh; |
3174 | | |
3175 | | /* Note that we've changed things. */ |
3176 | 0 | elf_section_data (section)->relocs = internal_relocs; |
3177 | 0 | elf_section_data (section)->this_hdr.contents = contents; |
3178 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
3179 | | |
3180 | | /* Count how many bytes we're going to delete. */ |
3181 | 0 | if (sym_hash->movm_args) |
3182 | 0 | bytes += 2; |
3183 | |
|
3184 | 0 | if (sym_hash->stack_size > 0) |
3185 | 0 | { |
3186 | 0 | if (sym_hash->stack_size <= 128) |
3187 | 0 | bytes += 3; |
3188 | 0 | else |
3189 | 0 | bytes += 4; |
3190 | 0 | } |
3191 | | |
3192 | | /* Note that we've deleted prologue bytes for this |
3193 | | function. */ |
3194 | 0 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; |
3195 | | |
3196 | | /* Actually delete the bytes. */ |
3197 | 0 | symval = sym_hash->root.root.u.def.value; |
3198 | 0 | if (!mn10300_elf_relax_delete_bytes (input_bfd, |
3199 | 0 | section, |
3200 | 0 | symval, |
3201 | 0 | bytes)) |
3202 | 0 | goto error_return; |
3203 | | |
3204 | | /* There may be other C++ functions symbols with the same |
3205 | | address. If so then mark these as having had their |
3206 | | prologue bytes deleted as well. */ |
3207 | 0 | for (hh = elf_sym_hashes (input_bfd); hh < end_hashes; hh++) |
3208 | 0 | { |
3209 | 0 | struct elf32_mn10300_link_hash_entry *h; |
3210 | |
|
3211 | 0 | h = (struct elf32_mn10300_link_hash_entry *) * hh; |
3212 | |
|
3213 | 0 | if (h != sym_hash |
3214 | 0 | && (h->root.root.type == bfd_link_hash_defined |
3215 | 0 | || h->root.root.type == bfd_link_hash_defweak) |
3216 | 0 | && h->root.root.u.def.section == section |
3217 | 0 | && ! (h->flags & MN10300_CONVERT_CALL_TO_CALLS) |
3218 | 0 | && h->root.root.u.def.value == symval |
3219 | 0 | && h->root.type == STT_FUNC) |
3220 | 0 | h->flags |= MN10300_DELETED_PROLOGUE_BYTES; |
3221 | 0 | } |
3222 | | |
3223 | | /* Something changed. Not strictly necessary, but |
3224 | | may lead to more relaxing opportunities. */ |
3225 | 0 | *again = true; |
3226 | 0 | } |
3227 | 0 | } |
3228 | | |
3229 | | /* Cache or free any memory we allocated for the relocs. */ |
3230 | 0 | if (elf_section_data (section)->relocs != internal_relocs) |
3231 | 0 | free (internal_relocs); |
3232 | 0 | internal_relocs = NULL; |
3233 | | |
3234 | | /* Cache or free any memory we allocated for the contents. */ |
3235 | 0 | if (contents != NULL |
3236 | 0 | && elf_section_data (section)->this_hdr.contents != contents) |
3237 | 0 | { |
3238 | 0 | if (! link_info->keep_memory) |
3239 | 0 | free (contents); |
3240 | 0 | else |
3241 | | /* Cache the section contents for elf_link_input_bfd. */ |
3242 | 0 | elf_section_data (section)->this_hdr.contents = contents; |
3243 | 0 | } |
3244 | 0 | contents = NULL; |
3245 | 0 | } |
3246 | | |
3247 | | /* Cache or free any memory we allocated for the symbols. */ |
3248 | 0 | if (isymbuf != NULL |
3249 | 0 | && symtab_hdr->contents != (unsigned char *) isymbuf) |
3250 | 0 | { |
3251 | 0 | if (! link_info->keep_memory) |
3252 | 0 | free (isymbuf); |
3253 | 0 | else |
3254 | | /* Cache the symbols for elf_link_input_bfd. */ |
3255 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
3256 | 0 | } |
3257 | 0 | isymbuf = NULL; |
3258 | 0 | } |
3259 | 0 | } |
3260 | | |
3261 | | /* (Re)initialize for the basic instruction shortening/relaxing pass. */ |
3262 | 0 | contents = NULL; |
3263 | 0 | internal_relocs = NULL; |
3264 | 0 | isymbuf = NULL; |
3265 | | /* For error_return. */ |
3266 | 0 | section = sec; |
3267 | | |
3268 | | /* We don't have to do anything for a relocatable link, if |
3269 | | this section does not have relocs, or if this is not a |
3270 | | code section. */ |
3271 | 0 | if (bfd_link_relocatable (link_info) |
3272 | 0 | || (sec->flags & SEC_RELOC) == 0 |
3273 | 0 | || sec->reloc_count == 0 |
3274 | 0 | || (sec->flags & SEC_CODE) == 0) |
3275 | 0 | return true; |
3276 | | |
3277 | 0 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3278 | | |
3279 | | /* Get a copy of the native relocations. */ |
3280 | 0 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
3281 | 0 | link_info->keep_memory); |
3282 | 0 | if (internal_relocs == NULL) |
3283 | 0 | goto error_return; |
3284 | | |
3285 | | /* Scan for worst case alignment gap changes. Note that this logic |
3286 | | is not ideal; what we should do is run this scan for every |
3287 | | opcode/address range and adjust accordingly, but that's |
3288 | | expensive. Worst case is that for an alignment of N bytes, we |
3289 | | move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc |
3290 | | all before it. Plus, this still doesn't cover cross-section |
3291 | | jumps with section alignment. */ |
3292 | 0 | irelend = internal_relocs + sec->reloc_count; |
3293 | 0 | align_gap_adjustment = 0; |
3294 | 0 | for (irel = internal_relocs; irel < irelend; irel++) |
3295 | 0 | { |
3296 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN) |
3297 | 0 | { |
3298 | 0 | bfd_vma adj = 1 << irel->r_addend; |
3299 | 0 | bfd_vma aend = irel->r_offset; |
3300 | |
|
3301 | 0 | aend = BFD_ALIGN (aend, 1 << irel->r_addend); |
3302 | 0 | adj = 2 * adj - adj - 1; |
3303 | | |
3304 | | /* Record the biggest adjustmnet. Skip any alignment at the |
3305 | | end of our section. */ |
3306 | 0 | if (align_gap_adjustment < adj |
3307 | 0 | && aend < sec->output_section->vma + sec->output_offset + sec->size) |
3308 | 0 | align_gap_adjustment = adj; |
3309 | 0 | } |
3310 | 0 | } |
3311 | | |
3312 | | /* Walk through them looking for relaxing opportunities. */ |
3313 | 0 | irelend = internal_relocs + sec->reloc_count; |
3314 | 0 | for (irel = internal_relocs; irel < irelend; irel++) |
3315 | 0 | { |
3316 | 0 | bfd_vma symval; |
3317 | 0 | bfd_signed_vma jump_offset; |
3318 | 0 | asection *sym_sec = NULL; |
3319 | 0 | struct elf32_mn10300_link_hash_entry *h = NULL; |
3320 | | |
3321 | | /* If this isn't something that can be relaxed, then ignore |
3322 | | this reloc. */ |
3323 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE |
3324 | 0 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8 |
3325 | 0 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX) |
3326 | 0 | continue; |
3327 | | |
3328 | | /* Get the section contents if we haven't done so already. */ |
3329 | 0 | if (contents == NULL) |
3330 | 0 | { |
3331 | | /* Get cached copy if it exists. */ |
3332 | 0 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
3333 | 0 | contents = elf_section_data (sec)->this_hdr.contents; |
3334 | 0 | else |
3335 | 0 | { |
3336 | | /* Go get them off disk. */ |
3337 | 0 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) |
3338 | 0 | goto error_return; |
3339 | 0 | } |
3340 | 0 | } |
3341 | | |
3342 | | /* Read this BFD's symbols if we haven't done so already. */ |
3343 | 0 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
3344 | 0 | { |
3345 | 0 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
3346 | 0 | if (isymbuf == NULL) |
3347 | 0 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, |
3348 | 0 | symtab_hdr->sh_info, 0, |
3349 | 0 | NULL, NULL, NULL); |
3350 | 0 | if (isymbuf == NULL) |
3351 | 0 | goto error_return; |
3352 | 0 | } |
3353 | | |
3354 | | /* Get the value of the symbol referred to by the reloc. */ |
3355 | 0 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
3356 | 0 | { |
3357 | 0 | Elf_Internal_Sym *isym; |
3358 | 0 | const char *sym_name; |
3359 | 0 | char *new_name; |
3360 | | |
3361 | | /* A local symbol. */ |
3362 | 0 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
3363 | 0 | if (isym->st_shndx == SHN_UNDEF) |
3364 | 0 | sym_sec = bfd_und_section_ptr; |
3365 | 0 | else if (isym->st_shndx == SHN_ABS) |
3366 | 0 | sym_sec = bfd_abs_section_ptr; |
3367 | 0 | else if (isym->st_shndx == SHN_COMMON) |
3368 | 0 | sym_sec = bfd_com_section_ptr; |
3369 | 0 | else |
3370 | 0 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
3371 | |
|
3372 | 0 | sym_name = bfd_elf_string_from_elf_section (abfd, |
3373 | 0 | symtab_hdr->sh_link, |
3374 | 0 | isym->st_name); |
3375 | |
|
3376 | 0 | if ((sym_sec->flags & SEC_MERGE) |
3377 | 0 | && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
3378 | 0 | { |
3379 | 0 | symval = isym->st_value; |
3380 | | |
3381 | | /* GAS may reduce relocations against symbols in SEC_MERGE |
3382 | | sections to a relocation against the section symbol when |
3383 | | the original addend was zero. When the reloc is against |
3384 | | a section symbol we should include the addend in the |
3385 | | offset passed to _bfd_merged_section_offset, since the |
3386 | | location of interest is the original symbol. On the |
3387 | | other hand, an access to "sym+addend" where "sym" is not |
3388 | | a section symbol should not include the addend; Such an |
3389 | | access is presumed to be an offset from "sym"; The |
3390 | | location of interest is just "sym". */ |
3391 | 0 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) |
3392 | 0 | symval += irel->r_addend; |
3393 | |
|
3394 | 0 | symval = _bfd_merged_section_offset (abfd, & sym_sec, |
3395 | 0 | elf_section_data (sym_sec)->sec_info, |
3396 | 0 | symval); |
3397 | |
|
3398 | 0 | if (ELF_ST_TYPE (isym->st_info) != STT_SECTION) |
3399 | 0 | symval += irel->r_addend; |
3400 | |
|
3401 | 0 | symval += sym_sec->output_section->vma |
3402 | 0 | + sym_sec->output_offset - irel->r_addend; |
3403 | 0 | } |
3404 | 0 | else |
3405 | 0 | symval = (isym->st_value |
3406 | 0 | + sym_sec->output_section->vma |
3407 | 0 | + sym_sec->output_offset); |
3408 | | |
3409 | | /* Tack on an ID so we can uniquely identify this |
3410 | | local symbol in the global hash table. */ |
3411 | 0 | new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10); |
3412 | 0 | if (new_name == NULL) |
3413 | 0 | goto error_return; |
3414 | 0 | sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); |
3415 | 0 | sym_name = new_name; |
3416 | |
|
3417 | 0 | h = (struct elf32_mn10300_link_hash_entry *) |
3418 | 0 | elf_link_hash_lookup (&hash_table->static_hash_table->root, |
3419 | 0 | sym_name, false, false, false); |
3420 | 0 | free (new_name); |
3421 | 0 | } |
3422 | 0 | else |
3423 | 0 | { |
3424 | 0 | unsigned long indx; |
3425 | | |
3426 | | /* An external symbol. */ |
3427 | 0 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
3428 | 0 | h = (struct elf32_mn10300_link_hash_entry *) |
3429 | 0 | (elf_sym_hashes (abfd)[indx]); |
3430 | 0 | BFD_ASSERT (h != NULL); |
3431 | 0 | if (h->root.root.type != bfd_link_hash_defined |
3432 | 0 | && h->root.root.type != bfd_link_hash_defweak) |
3433 | | /* This appears to be a reference to an undefined |
3434 | | symbol. Just ignore it--it will be caught by the |
3435 | | regular reloc processing. */ |
3436 | 0 | continue; |
3437 | | |
3438 | | /* Check for a reference to a discarded symbol and ignore it. */ |
3439 | 0 | if (h->root.root.u.def.section->output_section == NULL) |
3440 | 0 | continue; |
3441 | | |
3442 | 0 | sym_sec = h->root.root.u.def.section->output_section; |
3443 | |
|
3444 | 0 | symval = (h->root.root.u.def.value |
3445 | 0 | + h->root.root.u.def.section->output_section->vma |
3446 | 0 | + h->root.root.u.def.section->output_offset); |
3447 | 0 | } |
3448 | | |
3449 | | /* For simplicity of coding, we are going to modify the section |
3450 | | contents, the section relocs, and the BFD symbol table. We |
3451 | | must tell the rest of the code not to free up this |
3452 | | information. It would be possible to instead create a table |
3453 | | of changes which have to be made, as is done in coff-mips.c; |
3454 | | that would be more work, but would require less memory when |
3455 | | the linker is run. */ |
3456 | | |
3457 | | /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative |
3458 | | branch/call, also deal with "call" -> "calls" conversions and |
3459 | | insertion of prologue data into "call" instructions. */ |
3460 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32 |
3461 | 0 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32) |
3462 | 0 | { |
3463 | 0 | bfd_vma value = symval; |
3464 | |
|
3465 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32 |
3466 | 0 | && h != NULL |
3467 | 0 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL |
3468 | 0 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN |
3469 | 0 | && h->root.plt.offset != (bfd_vma) -1) |
3470 | 0 | { |
3471 | 0 | asection * splt; |
3472 | |
|
3473 | 0 | splt = hash_table->root.splt; |
3474 | 0 | value = ((splt->output_section->vma |
3475 | 0 | + splt->output_offset |
3476 | 0 | + h->root.plt.offset) |
3477 | 0 | - (sec->output_section->vma |
3478 | 0 | + sec->output_offset |
3479 | 0 | + irel->r_offset)); |
3480 | 0 | } |
3481 | | |
3482 | | /* If we've got a "call" instruction that needs to be turned |
3483 | | into a "calls" instruction, do so now. It saves a byte. */ |
3484 | 0 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) |
3485 | 0 | { |
3486 | 0 | unsigned char code; |
3487 | | |
3488 | | /* Get the opcode. */ |
3489 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
3490 | | |
3491 | | /* Make sure we're working with a "call" instruction! */ |
3492 | 0 | if (code == 0xdd) |
3493 | 0 | { |
3494 | | /* Note that we've changed the relocs, section contents, |
3495 | | etc. */ |
3496 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
3497 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
3498 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
3499 | | |
3500 | | /* Fix the opcode. */ |
3501 | 0 | bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); |
3502 | 0 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); |
3503 | | |
3504 | | /* Fix irel->r_offset and irel->r_addend. */ |
3505 | 0 | irel->r_offset += 1; |
3506 | 0 | irel->r_addend += 1; |
3507 | | |
3508 | | /* Delete one byte of data. */ |
3509 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
3510 | 0 | irel->r_offset + 3, 1)) |
3511 | 0 | goto error_return; |
3512 | | |
3513 | | /* That will change things, so, we should relax again. |
3514 | | Note that this is not required, and it may be slow. */ |
3515 | 0 | *again = true; |
3516 | 0 | } |
3517 | 0 | } |
3518 | 0 | else if (h) |
3519 | 0 | { |
3520 | | /* We've got a "call" instruction which needs some data |
3521 | | from target function filled in. */ |
3522 | 0 | unsigned char code; |
3523 | | |
3524 | | /* Get the opcode. */ |
3525 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
3526 | | |
3527 | | /* Insert data from the target function into the "call" |
3528 | | instruction if needed. */ |
3529 | 0 | if (code == 0xdd) |
3530 | 0 | { |
3531 | 0 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4); |
3532 | 0 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, |
3533 | 0 | contents + irel->r_offset + 5); |
3534 | 0 | } |
3535 | 0 | } |
3536 | | |
3537 | | /* Deal with pc-relative gunk. */ |
3538 | 0 | value -= (sec->output_section->vma + sec->output_offset); |
3539 | 0 | value -= irel->r_offset; |
3540 | 0 | value += irel->r_addend; |
3541 | | |
3542 | | /* See if the value will fit in 16 bits, note the high value is |
3543 | | 0x7fff + 2 as the target will be two bytes closer if we are |
3544 | | able to relax, if it's in the same section. */ |
3545 | 0 | if (sec->output_section == sym_sec->output_section) |
3546 | 0 | jump_offset = 0x8001; |
3547 | 0 | else |
3548 | 0 | jump_offset = 0x7fff; |
3549 | | |
3550 | | /* Account for jumps across alignment boundaries using |
3551 | | align_gap_adjustment. */ |
3552 | 0 | if ((bfd_signed_vma) value < jump_offset - (bfd_signed_vma) align_gap_adjustment |
3553 | 0 | && ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment)) |
3554 | 0 | { |
3555 | 0 | unsigned char code; |
3556 | | |
3557 | | /* Get the opcode. */ |
3558 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
3559 | |
|
3560 | 0 | if (code != 0xdc && code != 0xdd && code != 0xff) |
3561 | 0 | continue; |
3562 | | |
3563 | | /* Note that we've changed the relocs, section contents, etc. */ |
3564 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
3565 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
3566 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
3567 | | |
3568 | | /* Fix the opcode. */ |
3569 | 0 | if (code == 0xdc) |
3570 | 0 | bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1); |
3571 | 0 | else if (code == 0xdd) |
3572 | 0 | bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1); |
3573 | 0 | else if (code == 0xff) |
3574 | 0 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); |
3575 | | |
3576 | | /* Fix the relocation's type. */ |
3577 | 0 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
3578 | 0 | (ELF32_R_TYPE (irel->r_info) |
3579 | 0 | == (int) R_MN10300_PLT32) |
3580 | 0 | ? R_MN10300_PLT16 : |
3581 | 0 | R_MN10300_PCREL16); |
3582 | | |
3583 | | /* Delete two bytes of data. */ |
3584 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
3585 | 0 | irel->r_offset + 1, 2)) |
3586 | 0 | goto error_return; |
3587 | | |
3588 | | /* That will change things, so, we should relax again. |
3589 | | Note that this is not required, and it may be slow. */ |
3590 | 0 | *again = true; |
3591 | 0 | } |
3592 | 0 | } |
3593 | | |
3594 | | /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative |
3595 | | branch. */ |
3596 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16) |
3597 | 0 | { |
3598 | 0 | bfd_vma value = symval; |
3599 | | |
3600 | | /* If we've got a "call" instruction that needs to be turned |
3601 | | into a "calls" instruction, do so now. It saves a byte. */ |
3602 | 0 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) |
3603 | 0 | { |
3604 | 0 | unsigned char code; |
3605 | | |
3606 | | /* Get the opcode. */ |
3607 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
3608 | | |
3609 | | /* Make sure we're working with a "call" instruction! */ |
3610 | 0 | if (code == 0xcd) |
3611 | 0 | { |
3612 | | /* Note that we've changed the relocs, section contents, |
3613 | | etc. */ |
3614 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
3615 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
3616 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
3617 | | |
3618 | | /* Fix the opcode. */ |
3619 | 0 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); |
3620 | 0 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); |
3621 | | |
3622 | | /* Fix irel->r_offset and irel->r_addend. */ |
3623 | 0 | irel->r_offset += 1; |
3624 | 0 | irel->r_addend += 1; |
3625 | | |
3626 | | /* Delete one byte of data. */ |
3627 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
3628 | 0 | irel->r_offset + 1, 1)) |
3629 | 0 | goto error_return; |
3630 | | |
3631 | | /* That will change things, so, we should relax again. |
3632 | | Note that this is not required, and it may be slow. */ |
3633 | 0 | *again = true; |
3634 | 0 | } |
3635 | 0 | } |
3636 | 0 | else if (h) |
3637 | 0 | { |
3638 | 0 | unsigned char code; |
3639 | | |
3640 | | /* Get the opcode. */ |
3641 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
3642 | | |
3643 | | /* Insert data from the target function into the "call" |
3644 | | instruction if needed. */ |
3645 | 0 | if (code == 0xcd) |
3646 | 0 | { |
3647 | 0 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2); |
3648 | 0 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, |
3649 | 0 | contents + irel->r_offset + 3); |
3650 | 0 | } |
3651 | 0 | } |
3652 | | |
3653 | | /* Deal with pc-relative gunk. */ |
3654 | 0 | value -= (sec->output_section->vma + sec->output_offset); |
3655 | 0 | value -= irel->r_offset; |
3656 | 0 | value += irel->r_addend; |
3657 | | |
3658 | | /* See if the value will fit in 8 bits, note the high value is |
3659 | | 0x7f + 1 as the target will be one bytes closer if we are |
3660 | | able to relax. */ |
3661 | 0 | if ((long) value < 0x80 && (long) value > -0x80) |
3662 | 0 | { |
3663 | 0 | unsigned char code; |
3664 | | |
3665 | | /* Get the opcode. */ |
3666 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
3667 | |
|
3668 | 0 | if (code != 0xcc) |
3669 | 0 | continue; |
3670 | | |
3671 | | /* Note that we've changed the relocs, section contents, etc. */ |
3672 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
3673 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
3674 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
3675 | | |
3676 | | /* Fix the opcode. */ |
3677 | 0 | bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); |
3678 | | |
3679 | | /* Fix the relocation's type. */ |
3680 | 0 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
3681 | 0 | R_MN10300_PCREL8); |
3682 | | |
3683 | | /* Delete one byte of data. */ |
3684 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
3685 | 0 | irel->r_offset + 1, 1)) |
3686 | 0 | goto error_return; |
3687 | | |
3688 | | /* That will change things, so, we should relax again. |
3689 | | Note that this is not required, and it may be slow. */ |
3690 | 0 | *again = true; |
3691 | 0 | } |
3692 | 0 | } |
3693 | | |
3694 | | /* Try to eliminate an unconditional 8 bit pc-relative branch |
3695 | | which immediately follows a conditional 8 bit pc-relative |
3696 | | branch around the unconditional branch. |
3697 | | |
3698 | | original: new: |
3699 | | bCC lab1 bCC' lab2 |
3700 | | bra lab2 |
3701 | | lab1: lab1: |
3702 | | |
3703 | | This happens when the bCC can't reach lab2 at assembly time, |
3704 | | but due to other relaxations it can reach at link time. */ |
3705 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) |
3706 | 0 | { |
3707 | 0 | Elf_Internal_Rela *nrel; |
3708 | 0 | unsigned char code; |
3709 | | |
3710 | | /* Do nothing if this reloc is the last byte in the section. */ |
3711 | 0 | if (irel->r_offset == sec->size) |
3712 | 0 | continue; |
3713 | | |
3714 | | /* See if the next instruction is an unconditional pc-relative |
3715 | | branch, more often than not this test will fail, so we |
3716 | | test it first to speed things up. */ |
3717 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset + 1); |
3718 | 0 | if (code != 0xca) |
3719 | 0 | continue; |
3720 | | |
3721 | | /* Also make sure the next relocation applies to the next |
3722 | | instruction and that it's a pc-relative 8 bit branch. */ |
3723 | 0 | nrel = irel + 1; |
3724 | 0 | if (nrel == irelend |
3725 | 0 | || irel->r_offset + 2 != nrel->r_offset |
3726 | 0 | || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8) |
3727 | 0 | continue; |
3728 | | |
3729 | | /* Make sure our destination immediately follows the |
3730 | | unconditional branch. */ |
3731 | 0 | if (symval != (sec->output_section->vma + sec->output_offset |
3732 | 0 | + irel->r_offset + 3)) |
3733 | 0 | continue; |
3734 | | |
3735 | | /* Now make sure we are a conditional branch. This may not |
3736 | | be necessary, but why take the chance. |
3737 | | |
3738 | | Note these checks assume that R_MN10300_PCREL8 relocs |
3739 | | only occur on bCC and bCCx insns. If they occured |
3740 | | elsewhere, we'd need to know the start of this insn |
3741 | | for this check to be accurate. */ |
3742 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
3743 | 0 | if (code != 0xc0 && code != 0xc1 && code != 0xc2 |
3744 | 0 | && code != 0xc3 && code != 0xc4 && code != 0xc5 |
3745 | 0 | && code != 0xc6 && code != 0xc7 && code != 0xc8 |
3746 | 0 | && code != 0xc9 && code != 0xe8 && code != 0xe9 |
3747 | 0 | && code != 0xea && code != 0xeb) |
3748 | 0 | continue; |
3749 | | |
3750 | | /* We also have to be sure there is no symbol/label |
3751 | | at the unconditional branch. */ |
3752 | 0 | if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf, |
3753 | 0 | irel->r_offset + 1)) |
3754 | 0 | continue; |
3755 | | |
3756 | | /* Note that we've changed the relocs, section contents, etc. */ |
3757 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
3758 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
3759 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
3760 | | |
3761 | | /* Reverse the condition of the first branch. */ |
3762 | 0 | switch (code) |
3763 | 0 | { |
3764 | 0 | case 0xc8: |
3765 | 0 | code = 0xc9; |
3766 | 0 | break; |
3767 | 0 | case 0xc9: |
3768 | 0 | code = 0xc8; |
3769 | 0 | break; |
3770 | 0 | case 0xc0: |
3771 | 0 | code = 0xc2; |
3772 | 0 | break; |
3773 | 0 | case 0xc2: |
3774 | 0 | code = 0xc0; |
3775 | 0 | break; |
3776 | 0 | case 0xc3: |
3777 | 0 | code = 0xc1; |
3778 | 0 | break; |
3779 | 0 | case 0xc1: |
3780 | 0 | code = 0xc3; |
3781 | 0 | break; |
3782 | 0 | case 0xc4: |
3783 | 0 | code = 0xc6; |
3784 | 0 | break; |
3785 | 0 | case 0xc6: |
3786 | 0 | code = 0xc4; |
3787 | 0 | break; |
3788 | 0 | case 0xc7: |
3789 | 0 | code = 0xc5; |
3790 | 0 | break; |
3791 | 0 | case 0xc5: |
3792 | 0 | code = 0xc7; |
3793 | 0 | break; |
3794 | 0 | case 0xe8: |
3795 | 0 | code = 0xe9; |
3796 | 0 | break; |
3797 | 0 | case 0x9d: |
3798 | 0 | code = 0xe8; |
3799 | 0 | break; |
3800 | 0 | case 0xea: |
3801 | 0 | code = 0xeb; |
3802 | 0 | break; |
3803 | 0 | case 0xeb: |
3804 | 0 | code = 0xea; |
3805 | 0 | break; |
3806 | 0 | } |
3807 | 0 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); |
3808 | | |
3809 | | /* Set the reloc type and symbol for the first branch |
3810 | | from the second branch. */ |
3811 | 0 | irel->r_info = nrel->r_info; |
3812 | | |
3813 | | /* Make the reloc for the second branch a null reloc. */ |
3814 | 0 | nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), |
3815 | 0 | R_MN10300_NONE); |
3816 | | |
3817 | | /* Delete two bytes of data. */ |
3818 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
3819 | 0 | irel->r_offset + 1, 2)) |
3820 | 0 | goto error_return; |
3821 | | |
3822 | | /* That will change things, so, we should relax again. |
3823 | | Note that this is not required, and it may be slow. */ |
3824 | 0 | *again = true; |
3825 | 0 | } |
3826 | | |
3827 | | /* Try to turn a 24 immediate, displacement or absolute address |
3828 | | into a 8 immediate, displacement or absolute address. */ |
3829 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24) |
3830 | 0 | { |
3831 | 0 | bfd_vma value = symval; |
3832 | 0 | value += irel->r_addend; |
3833 | | |
3834 | | /* See if the value will fit in 8 bits. */ |
3835 | 0 | if ((long) value < 0x7f && (long) value > -0x80) |
3836 | 0 | { |
3837 | 0 | unsigned char code; |
3838 | | |
3839 | | /* AM33 insns which have 24 operands are 6 bytes long and |
3840 | | will have 0xfd as the first byte. */ |
3841 | | |
3842 | | /* Get the first opcode. */ |
3843 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); |
3844 | |
|
3845 | 0 | if (code == 0xfd) |
3846 | 0 | { |
3847 | | /* Get the second opcode. */ |
3848 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); |
3849 | | |
3850 | | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit |
3851 | | equivalent instructions exists. */ |
3852 | 0 | if (code != 0x6b && code != 0x7b |
3853 | 0 | && code != 0x8b && code != 0x9b |
3854 | 0 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 |
3855 | 0 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b |
3856 | 0 | || (code & 0x0f) == 0x0e)) |
3857 | 0 | { |
3858 | | /* Not safe if the high bit is on as relaxing may |
3859 | | move the value out of high mem and thus not fit |
3860 | | in a signed 8bit value. This is currently over |
3861 | | conservative. */ |
3862 | 0 | if ((value & 0x80) == 0) |
3863 | 0 | { |
3864 | | /* Note that we've changed the relocation contents, |
3865 | | etc. */ |
3866 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
3867 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
3868 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
3869 | | |
3870 | | /* Fix the opcode. */ |
3871 | 0 | bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); |
3872 | 0 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); |
3873 | | |
3874 | | /* Fix the relocation's type. */ |
3875 | 0 | irel->r_info = |
3876 | 0 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
3877 | 0 | R_MN10300_8); |
3878 | | |
3879 | | /* Delete two bytes of data. */ |
3880 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
3881 | 0 | irel->r_offset + 1, 2)) |
3882 | 0 | goto error_return; |
3883 | | |
3884 | | /* That will change things, so, we should relax |
3885 | | again. Note that this is not required, and it |
3886 | | may be slow. */ |
3887 | 0 | *again = true; |
3888 | 0 | break; |
3889 | 0 | } |
3890 | 0 | } |
3891 | 0 | } |
3892 | 0 | } |
3893 | 0 | } |
3894 | | |
3895 | | /* Try to turn a 32bit immediate, displacement or absolute address |
3896 | | into a 16bit immediate, displacement or absolute address. */ |
3897 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32 |
3898 | 0 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32 |
3899 | 0 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) |
3900 | 0 | { |
3901 | 0 | bfd_vma value = symval; |
3902 | |
|
3903 | 0 | if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32) |
3904 | 0 | { |
3905 | 0 | asection * sgot; |
3906 | |
|
3907 | 0 | sgot = hash_table->root.sgot; |
3908 | 0 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32) |
3909 | 0 | { |
3910 | 0 | value = sgot->output_offset; |
3911 | |
|
3912 | 0 | if (h) |
3913 | 0 | value += h->root.got.offset; |
3914 | 0 | else |
3915 | 0 | value += (elf_local_got_offsets |
3916 | 0 | (abfd)[ELF32_R_SYM (irel->r_info)]); |
3917 | 0 | } |
3918 | 0 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) |
3919 | 0 | value -= sgot->output_section->vma; |
3920 | 0 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) |
3921 | 0 | value = (sgot->output_section->vma |
3922 | 0 | - (sec->output_section->vma |
3923 | 0 | + sec->output_offset |
3924 | 0 | + irel->r_offset)); |
3925 | 0 | else |
3926 | 0 | abort (); |
3927 | 0 | } |
3928 | | |
3929 | 0 | value += irel->r_addend; |
3930 | | |
3931 | | /* See if the value will fit in 24 bits. |
3932 | | We allow any 16bit match here. We prune those we can't |
3933 | | handle below. */ |
3934 | 0 | if (value + 0x800000 < 0x1000000 && irel->r_offset >= 3) |
3935 | 0 | { |
3936 | 0 | unsigned char code; |
3937 | | |
3938 | | /* AM33 insns which have 32bit operands are 7 bytes long and |
3939 | | will have 0xfe as the first byte. */ |
3940 | | |
3941 | | /* Get the first opcode. */ |
3942 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); |
3943 | |
|
3944 | 0 | if (code == 0xfe) |
3945 | 0 | { |
3946 | | /* Get the second opcode. */ |
3947 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); |
3948 | | |
3949 | | /* All the am33 32 -> 24 relaxing possibilities. */ |
3950 | | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit |
3951 | | equivalent instructions exists. */ |
3952 | 0 | if (code != 0x6b && code != 0x7b |
3953 | 0 | && code != 0x8b && code != 0x9b |
3954 | 0 | && (ELF32_R_TYPE (irel->r_info) |
3955 | 0 | != (int) R_MN10300_GOTPC32) |
3956 | 0 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 |
3957 | 0 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b |
3958 | 0 | || (code & 0x0f) == 0x0e)) |
3959 | 0 | { |
3960 | | /* Not safe if the high bit is on as relaxing may |
3961 | | move the value out of high mem and thus not fit |
3962 | | in a signed 16bit value. This is currently over |
3963 | | conservative. */ |
3964 | 0 | if ((value & 0x8000) == 0) |
3965 | 0 | { |
3966 | | /* Note that we've changed the relocation contents, |
3967 | | etc. */ |
3968 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
3969 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
3970 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
3971 | | |
3972 | | /* Fix the opcode. */ |
3973 | 0 | bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); |
3974 | 0 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); |
3975 | | |
3976 | | /* Fix the relocation's type. */ |
3977 | 0 | irel->r_info = |
3978 | 0 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
3979 | 0 | (ELF32_R_TYPE (irel->r_info) |
3980 | 0 | == (int) R_MN10300_GOTOFF32) |
3981 | 0 | ? R_MN10300_GOTOFF24 |
3982 | 0 | : (ELF32_R_TYPE (irel->r_info) |
3983 | 0 | == (int) R_MN10300_GOT32) |
3984 | 0 | ? R_MN10300_GOT24 : |
3985 | 0 | R_MN10300_24); |
3986 | | |
3987 | | /* Delete one byte of data. */ |
3988 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
3989 | 0 | irel->r_offset + 3, 1)) |
3990 | 0 | goto error_return; |
3991 | | |
3992 | | /* That will change things, so, we should relax |
3993 | | again. Note that this is not required, and it |
3994 | | may be slow. */ |
3995 | 0 | *again = true; |
3996 | 0 | break; |
3997 | 0 | } |
3998 | 0 | } |
3999 | 0 | } |
4000 | 0 | } |
4001 | | |
4002 | | /* See if the value will fit in 16 bits. |
4003 | | We allow any 16bit match here. We prune those we can't |
4004 | | handle below. */ |
4005 | 0 | if (value + 0x8000 < 0x10000 && irel->r_offset >= 2) |
4006 | 0 | { |
4007 | 0 | unsigned char code; |
4008 | | |
4009 | | /* Most insns which have 32bit operands are 6 bytes long; |
4010 | | exceptions are pcrel insns and bit insns. |
4011 | | |
4012 | | We handle pcrel insns above. We don't bother trying |
4013 | | to handle the bit insns here. |
4014 | | |
4015 | | The first byte of the remaining insns will be 0xfc. */ |
4016 | | |
4017 | | /* Get the first opcode. */ |
4018 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); |
4019 | |
|
4020 | 0 | if (code != 0xfc) |
4021 | 0 | continue; |
4022 | | |
4023 | | /* Get the second opcode. */ |
4024 | 0 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); |
4025 | |
|
4026 | 0 | if ((code & 0xf0) < 0x80) |
4027 | 0 | switch (code & 0xf0) |
4028 | 0 | { |
4029 | | /* mov (d32,am),dn -> mov (d32,am),dn |
4030 | | mov dm,(d32,am) -> mov dn,(d32,am) |
4031 | | mov (d32,am),an -> mov (d32,am),an |
4032 | | mov dm,(d32,am) -> mov dn,(d32,am) |
4033 | | movbu (d32,am),dn -> movbu (d32,am),dn |
4034 | | movbu dm,(d32,am) -> movbu dn,(d32,am) |
4035 | | movhu (d32,am),dn -> movhu (d32,am),dn |
4036 | | movhu dm,(d32,am) -> movhu dn,(d32,am) */ |
4037 | 0 | case 0x00: |
4038 | 0 | case 0x10: |
4039 | 0 | case 0x20: |
4040 | 0 | case 0x30: |
4041 | 0 | case 0x40: |
4042 | 0 | case 0x50: |
4043 | 0 | case 0x60: |
4044 | 0 | case 0x70: |
4045 | | /* Not safe if the high bit is on as relaxing may |
4046 | | move the value out of high mem and thus not fit |
4047 | | in a signed 16bit value. */ |
4048 | 0 | if (code == 0xcc |
4049 | 0 | && (value & 0x8000)) |
4050 | 0 | continue; |
4051 | | |
4052 | | /* Note that we've changed the relocation contents, etc. */ |
4053 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
4054 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
4055 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
4056 | | |
4057 | | /* Fix the opcode. */ |
4058 | 0 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); |
4059 | 0 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); |
4060 | | |
4061 | | /* Fix the relocation's type. */ |
4062 | 0 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
4063 | 0 | (ELF32_R_TYPE (irel->r_info) |
4064 | 0 | == (int) R_MN10300_GOTOFF32) |
4065 | 0 | ? R_MN10300_GOTOFF16 |
4066 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4067 | 0 | == (int) R_MN10300_GOT32) |
4068 | 0 | ? R_MN10300_GOT16 |
4069 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4070 | 0 | == (int) R_MN10300_GOTPC32) |
4071 | 0 | ? R_MN10300_GOTPC16 : |
4072 | 0 | R_MN10300_16); |
4073 | | |
4074 | | /* Delete two bytes of data. */ |
4075 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
4076 | 0 | irel->r_offset + 2, 2)) |
4077 | 0 | goto error_return; |
4078 | | |
4079 | | /* That will change things, so, we should relax again. |
4080 | | Note that this is not required, and it may be slow. */ |
4081 | 0 | *again = true; |
4082 | 0 | break; |
4083 | 0 | } |
4084 | 0 | else if ((code & 0xf0) == 0x80 |
4085 | 0 | || (code & 0xf0) == 0x90) |
4086 | 0 | switch (code & 0xf3) |
4087 | 0 | { |
4088 | | /* mov dn,(abs32) -> mov dn,(abs16) |
4089 | | movbu dn,(abs32) -> movbu dn,(abs16) |
4090 | | movhu dn,(abs32) -> movhu dn,(abs16) */ |
4091 | 0 | case 0x81: |
4092 | 0 | case 0x82: |
4093 | 0 | case 0x83: |
4094 | | /* Note that we've changed the relocation contents, etc. */ |
4095 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
4096 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
4097 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
4098 | |
|
4099 | 0 | if ((code & 0xf3) == 0x81) |
4100 | 0 | code = 0x01 + (code & 0x0c); |
4101 | 0 | else if ((code & 0xf3) == 0x82) |
4102 | 0 | code = 0x02 + (code & 0x0c); |
4103 | 0 | else if ((code & 0xf3) == 0x83) |
4104 | 0 | code = 0x03 + (code & 0x0c); |
4105 | 0 | else |
4106 | 0 | abort (); |
4107 | | |
4108 | | /* Fix the opcode. */ |
4109 | 0 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); |
4110 | | |
4111 | | /* Fix the relocation's type. */ |
4112 | 0 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
4113 | 0 | (ELF32_R_TYPE (irel->r_info) |
4114 | 0 | == (int) R_MN10300_GOTOFF32) |
4115 | 0 | ? R_MN10300_GOTOFF16 |
4116 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4117 | 0 | == (int) R_MN10300_GOT32) |
4118 | 0 | ? R_MN10300_GOT16 |
4119 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4120 | 0 | == (int) R_MN10300_GOTPC32) |
4121 | 0 | ? R_MN10300_GOTPC16 : |
4122 | 0 | R_MN10300_16); |
4123 | | |
4124 | | /* The opcode got shorter too, so we have to fix the |
4125 | | addend and offset too! */ |
4126 | 0 | irel->r_offset -= 1; |
4127 | | |
4128 | | /* Delete three bytes of data. */ |
4129 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
4130 | 0 | irel->r_offset + 1, 3)) |
4131 | 0 | goto error_return; |
4132 | | |
4133 | | /* That will change things, so, we should relax again. |
4134 | | Note that this is not required, and it may be slow. */ |
4135 | 0 | *again = true; |
4136 | 0 | break; |
4137 | | |
4138 | | /* mov am,(abs32) -> mov am,(abs16) |
4139 | | mov am,(d32,sp) -> mov am,(d16,sp) |
4140 | | mov dm,(d32,sp) -> mov dm,(d32,sp) |
4141 | | movbu dm,(d32,sp) -> movbu dm,(d32,sp) |
4142 | | movhu dm,(d32,sp) -> movhu dm,(d32,sp) */ |
4143 | 0 | case 0x80: |
4144 | 0 | case 0x90: |
4145 | 0 | case 0x91: |
4146 | 0 | case 0x92: |
4147 | 0 | case 0x93: |
4148 | | /* sp-based offsets are zero-extended. */ |
4149 | 0 | if (code >= 0x90 && code <= 0x93 |
4150 | 0 | && (long) value < 0) |
4151 | 0 | continue; |
4152 | | |
4153 | | /* Note that we've changed the relocation contents, etc. */ |
4154 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
4155 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
4156 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
4157 | | |
4158 | | /* Fix the opcode. */ |
4159 | 0 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); |
4160 | 0 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); |
4161 | | |
4162 | | /* Fix the relocation's type. */ |
4163 | 0 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
4164 | 0 | (ELF32_R_TYPE (irel->r_info) |
4165 | 0 | == (int) R_MN10300_GOTOFF32) |
4166 | 0 | ? R_MN10300_GOTOFF16 |
4167 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4168 | 0 | == (int) R_MN10300_GOT32) |
4169 | 0 | ? R_MN10300_GOT16 |
4170 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4171 | 0 | == (int) R_MN10300_GOTPC32) |
4172 | 0 | ? R_MN10300_GOTPC16 : |
4173 | 0 | R_MN10300_16); |
4174 | | |
4175 | | /* Delete two bytes of data. */ |
4176 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
4177 | 0 | irel->r_offset + 2, 2)) |
4178 | 0 | goto error_return; |
4179 | | |
4180 | | /* That will change things, so, we should relax again. |
4181 | | Note that this is not required, and it may be slow. */ |
4182 | 0 | *again = true; |
4183 | 0 | break; |
4184 | 0 | } |
4185 | 0 | else if ((code & 0xf0) < 0xf0) |
4186 | 0 | switch (code & 0xfc) |
4187 | 0 | { |
4188 | | /* mov imm32,dn -> mov imm16,dn |
4189 | | mov imm32,an -> mov imm16,an |
4190 | | mov (abs32),dn -> mov (abs16),dn |
4191 | | movbu (abs32),dn -> movbu (abs16),dn |
4192 | | movhu (abs32),dn -> movhu (abs16),dn */ |
4193 | 0 | case 0xcc: |
4194 | 0 | case 0xdc: |
4195 | 0 | case 0xa4: |
4196 | 0 | case 0xa8: |
4197 | 0 | case 0xac: |
4198 | | /* Not safe if the high bit is on as relaxing may |
4199 | | move the value out of high mem and thus not fit |
4200 | | in a signed 16bit value. */ |
4201 | 0 | if (code == 0xcc |
4202 | 0 | && (value & 0x8000)) |
4203 | 0 | continue; |
4204 | | |
4205 | | /* "mov imm16, an" zero-extends the immediate. */ |
4206 | 0 | if ((code & 0xfc) == 0xdc |
4207 | 0 | && (long) value < 0) |
4208 | 0 | continue; |
4209 | | |
4210 | | /* Note that we've changed the relocation contents, etc. */ |
4211 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
4212 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
4213 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
4214 | |
|
4215 | 0 | if ((code & 0xfc) == 0xcc) |
4216 | 0 | code = 0x2c + (code & 0x03); |
4217 | 0 | else if ((code & 0xfc) == 0xdc) |
4218 | 0 | code = 0x24 + (code & 0x03); |
4219 | 0 | else if ((code & 0xfc) == 0xa4) |
4220 | 0 | code = 0x30 + (code & 0x03); |
4221 | 0 | else if ((code & 0xfc) == 0xa8) |
4222 | 0 | code = 0x34 + (code & 0x03); |
4223 | 0 | else if ((code & 0xfc) == 0xac) |
4224 | 0 | code = 0x38 + (code & 0x03); |
4225 | 0 | else |
4226 | 0 | abort (); |
4227 | | |
4228 | | /* Fix the opcode. */ |
4229 | 0 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); |
4230 | | |
4231 | | /* Fix the relocation's type. */ |
4232 | 0 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
4233 | 0 | (ELF32_R_TYPE (irel->r_info) |
4234 | 0 | == (int) R_MN10300_GOTOFF32) |
4235 | 0 | ? R_MN10300_GOTOFF16 |
4236 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4237 | 0 | == (int) R_MN10300_GOT32) |
4238 | 0 | ? R_MN10300_GOT16 |
4239 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4240 | 0 | == (int) R_MN10300_GOTPC32) |
4241 | 0 | ? R_MN10300_GOTPC16 : |
4242 | 0 | R_MN10300_16); |
4243 | | |
4244 | | /* The opcode got shorter too, so we have to fix the |
4245 | | addend and offset too! */ |
4246 | 0 | irel->r_offset -= 1; |
4247 | | |
4248 | | /* Delete three bytes of data. */ |
4249 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
4250 | 0 | irel->r_offset + 1, 3)) |
4251 | 0 | goto error_return; |
4252 | | |
4253 | | /* That will change things, so, we should relax again. |
4254 | | Note that this is not required, and it may be slow. */ |
4255 | 0 | *again = true; |
4256 | 0 | break; |
4257 | | |
4258 | | /* mov (abs32),an -> mov (abs16),an |
4259 | | mov (d32,sp),an -> mov (d16,sp),an |
4260 | | mov (d32,sp),dn -> mov (d16,sp),dn |
4261 | | movbu (d32,sp),dn -> movbu (d16,sp),dn |
4262 | | movhu (d32,sp),dn -> movhu (d16,sp),dn |
4263 | | add imm32,dn -> add imm16,dn |
4264 | | cmp imm32,dn -> cmp imm16,dn |
4265 | | add imm32,an -> add imm16,an |
4266 | | cmp imm32,an -> cmp imm16,an |
4267 | | and imm32,dn -> and imm16,dn |
4268 | | or imm32,dn -> or imm16,dn |
4269 | | xor imm32,dn -> xor imm16,dn |
4270 | | btst imm32,dn -> btst imm16,dn */ |
4271 | | |
4272 | 0 | case 0xa0: |
4273 | 0 | case 0xb0: |
4274 | 0 | case 0xb1: |
4275 | 0 | case 0xb2: |
4276 | 0 | case 0xb3: |
4277 | 0 | case 0xc0: |
4278 | 0 | case 0xc8: |
4279 | |
|
4280 | 0 | case 0xd0: |
4281 | 0 | case 0xd8: |
4282 | 0 | case 0xe0: |
4283 | 0 | case 0xe1: |
4284 | 0 | case 0xe2: |
4285 | 0 | case 0xe3: |
4286 | | /* cmp imm16, an zero-extends the immediate. */ |
4287 | 0 | if (code == 0xdc |
4288 | 0 | && (long) value < 0) |
4289 | 0 | continue; |
4290 | | |
4291 | | /* So do sp-based offsets. */ |
4292 | 0 | if (code >= 0xb0 && code <= 0xb3 |
4293 | 0 | && (long) value < 0) |
4294 | 0 | continue; |
4295 | | |
4296 | | /* Note that we've changed the relocation contents, etc. */ |
4297 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
4298 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
4299 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
4300 | | |
4301 | | /* Fix the opcode. */ |
4302 | 0 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); |
4303 | 0 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); |
4304 | | |
4305 | | /* Fix the relocation's type. */ |
4306 | 0 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
4307 | 0 | (ELF32_R_TYPE (irel->r_info) |
4308 | 0 | == (int) R_MN10300_GOTOFF32) |
4309 | 0 | ? R_MN10300_GOTOFF16 |
4310 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4311 | 0 | == (int) R_MN10300_GOT32) |
4312 | 0 | ? R_MN10300_GOT16 |
4313 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4314 | 0 | == (int) R_MN10300_GOTPC32) |
4315 | 0 | ? R_MN10300_GOTPC16 : |
4316 | 0 | R_MN10300_16); |
4317 | | |
4318 | | /* Delete two bytes of data. */ |
4319 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
4320 | 0 | irel->r_offset + 2, 2)) |
4321 | 0 | goto error_return; |
4322 | | |
4323 | | /* That will change things, so, we should relax again. |
4324 | | Note that this is not required, and it may be slow. */ |
4325 | 0 | *again = true; |
4326 | 0 | break; |
4327 | 0 | } |
4328 | 0 | else if (code == 0xfe) |
4329 | 0 | { |
4330 | | /* add imm32,sp -> add imm16,sp */ |
4331 | | |
4332 | | /* Note that we've changed the relocation contents, etc. */ |
4333 | 0 | elf_section_data (sec)->relocs = internal_relocs; |
4334 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
4335 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
4336 | | |
4337 | | /* Fix the opcode. */ |
4338 | 0 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); |
4339 | 0 | bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1); |
4340 | | |
4341 | | /* Fix the relocation's type. */ |
4342 | 0 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
4343 | 0 | (ELF32_R_TYPE (irel->r_info) |
4344 | 0 | == (int) R_MN10300_GOT32) |
4345 | 0 | ? R_MN10300_GOT16 |
4346 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4347 | 0 | == (int) R_MN10300_GOTOFF32) |
4348 | 0 | ? R_MN10300_GOTOFF16 |
4349 | 0 | : (ELF32_R_TYPE (irel->r_info) |
4350 | 0 | == (int) R_MN10300_GOTPC32) |
4351 | 0 | ? R_MN10300_GOTPC16 : |
4352 | 0 | R_MN10300_16); |
4353 | | |
4354 | | /* Delete two bytes of data. */ |
4355 | 0 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, |
4356 | 0 | irel->r_offset + 2, 2)) |
4357 | 0 | goto error_return; |
4358 | | |
4359 | | /* That will change things, so, we should relax again. |
4360 | | Note that this is not required, and it may be slow. */ |
4361 | 0 | *again = true; |
4362 | 0 | break; |
4363 | 0 | } |
4364 | 0 | } |
4365 | 0 | } |
4366 | 0 | } |
4367 | | |
4368 | 0 | if (isymbuf != NULL |
4369 | 0 | && symtab_hdr->contents != (unsigned char *) isymbuf) |
4370 | 0 | { |
4371 | 0 | if (! link_info->keep_memory) |
4372 | 0 | free (isymbuf); |
4373 | 0 | else |
4374 | 0 | { |
4375 | | /* Cache the symbols for elf_link_input_bfd. */ |
4376 | 0 | symtab_hdr->contents = (unsigned char *) isymbuf; |
4377 | 0 | } |
4378 | 0 | } |
4379 | |
|
4380 | 0 | if (contents != NULL |
4381 | 0 | && elf_section_data (sec)->this_hdr.contents != contents) |
4382 | 0 | { |
4383 | 0 | if (! link_info->keep_memory) |
4384 | 0 | free (contents); |
4385 | 0 | else |
4386 | 0 | { |
4387 | | /* Cache the section contents for elf_link_input_bfd. */ |
4388 | 0 | elf_section_data (sec)->this_hdr.contents = contents; |
4389 | 0 | } |
4390 | 0 | } |
4391 | |
|
4392 | 0 | if (elf_section_data (sec)->relocs != internal_relocs) |
4393 | 0 | free (internal_relocs); |
4394 | |
|
4395 | 0 | return true; |
4396 | | |
4397 | 0 | error_return: |
4398 | 0 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
4399 | 0 | free (isymbuf); |
4400 | 0 | if (elf_section_data (section)->this_hdr.contents != contents) |
4401 | 0 | free (contents); |
4402 | 0 | if (elf_section_data (section)->relocs != internal_relocs) |
4403 | 0 | free (internal_relocs); |
4404 | |
|
4405 | 0 | return false; |
4406 | 0 | } Unexecuted instantiation: elf-m10300.c:mn10300_elf_relax_section Unexecuted instantiation: elf32-am33lin.c:mn10300_elf_relax_section |
4407 | | |
4408 | | /* This is a version of bfd_generic_get_relocated_section_contents |
4409 | | which uses mn10300_elf_relocate_section. */ |
4410 | | |
4411 | | static bfd_byte * |
4412 | | mn10300_elf_get_relocated_section_contents (bfd *output_bfd, |
4413 | | struct bfd_link_info *link_info, |
4414 | | struct bfd_link_order *link_order, |
4415 | | bfd_byte *data, |
4416 | | bool relocatable, |
4417 | | asymbol **symbols) |
4418 | 0 | { |
4419 | 0 | Elf_Internal_Shdr *symtab_hdr; |
4420 | 0 | asection *input_section = link_order->u.indirect.section; |
4421 | 0 | bfd *input_bfd = input_section->owner; |
4422 | 0 | asection **sections = NULL; |
4423 | 0 | Elf_Internal_Rela *internal_relocs = NULL; |
4424 | 0 | Elf_Internal_Sym *isymbuf = NULL; |
4425 | | |
4426 | | /* We only need to handle the case of relaxing, or of having a |
4427 | | particular set of section contents, specially. */ |
4428 | 0 | if (relocatable |
4429 | 0 | || elf_section_data (input_section)->this_hdr.contents == NULL) |
4430 | 0 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, |
4431 | 0 | link_order, data, |
4432 | 0 | relocatable, |
4433 | 0 | symbols); |
4434 | | |
4435 | 0 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
4436 | |
|
4437 | 0 | bfd_byte *orig_data = data; |
4438 | 0 | if (data == NULL) |
4439 | 0 | { |
4440 | 0 | data = bfd_malloc (input_section->size); |
4441 | 0 | if (data == NULL) |
4442 | 0 | return NULL; |
4443 | 0 | } |
4444 | 0 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, |
4445 | 0 | (size_t) input_section->size); |
4446 | |
|
4447 | 0 | if ((input_section->flags & SEC_RELOC) != 0 |
4448 | 0 | && input_section->reloc_count > 0) |
4449 | 0 | { |
4450 | 0 | asection **secpp; |
4451 | 0 | Elf_Internal_Sym *isym, *isymend; |
4452 | 0 | bfd_size_type amt; |
4453 | |
|
4454 | 0 | internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section, |
4455 | 0 | NULL, NULL, false); |
4456 | 0 | if (internal_relocs == NULL) |
4457 | 0 | goto error_return; |
4458 | | |
4459 | 0 | if (symtab_hdr->sh_info != 0) |
4460 | 0 | { |
4461 | 0 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
4462 | 0 | if (isymbuf == NULL) |
4463 | 0 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, |
4464 | 0 | symtab_hdr->sh_info, 0, |
4465 | 0 | NULL, NULL, NULL); |
4466 | 0 | if (isymbuf == NULL) |
4467 | 0 | goto error_return; |
4468 | 0 | } |
4469 | | |
4470 | 0 | amt = symtab_hdr->sh_info; |
4471 | 0 | amt *= sizeof (asection *); |
4472 | 0 | sections = bfd_malloc (amt); |
4473 | 0 | if (sections == NULL && amt != 0) |
4474 | 0 | goto error_return; |
4475 | | |
4476 | 0 | isymend = isymbuf + symtab_hdr->sh_info; |
4477 | 0 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) |
4478 | 0 | { |
4479 | 0 | asection *isec; |
4480 | |
|
4481 | 0 | if (isym->st_shndx == SHN_UNDEF) |
4482 | 0 | isec = bfd_und_section_ptr; |
4483 | 0 | else if (isym->st_shndx == SHN_ABS) |
4484 | 0 | isec = bfd_abs_section_ptr; |
4485 | 0 | else if (isym->st_shndx == SHN_COMMON) |
4486 | 0 | isec = bfd_com_section_ptr; |
4487 | 0 | else |
4488 | 0 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
4489 | |
|
4490 | 0 | *secpp = isec; |
4491 | 0 | } |
4492 | |
|
4493 | 0 | if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, |
4494 | 0 | input_section, data, internal_relocs, |
4495 | 0 | isymbuf, sections)) |
4496 | 0 | goto error_return; |
4497 | | |
4498 | 0 | free (sections); |
4499 | 0 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
4500 | 0 | free (isymbuf); |
4501 | 0 | if (internal_relocs != elf_section_data (input_section)->relocs) |
4502 | 0 | free (internal_relocs); |
4503 | 0 | } |
4504 | | |
4505 | 0 | return data; |
4506 | | |
4507 | 0 | error_return: |
4508 | 0 | free (sections); |
4509 | 0 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
4510 | 0 | free (isymbuf); |
4511 | 0 | if (internal_relocs != elf_section_data (input_section)->relocs) |
4512 | 0 | free (internal_relocs); |
4513 | 0 | if (orig_data == NULL) |
4514 | 0 | free (data); |
4515 | 0 | return NULL; |
4516 | 0 | } Unexecuted instantiation: elf-m10300.c:mn10300_elf_get_relocated_section_contents Unexecuted instantiation: elf32-am33lin.c:mn10300_elf_get_relocated_section_contents |
4517 | | |
4518 | | /* Assorted hash table functions. */ |
4519 | | |
4520 | | /* Initialize an entry in the link hash table. */ |
4521 | | |
4522 | | /* Create an entry in an MN10300 ELF linker hash table. */ |
4523 | | |
4524 | | static struct bfd_hash_entry * |
4525 | | elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry *entry, |
4526 | | struct bfd_hash_table *table, |
4527 | | const char *string) |
4528 | 0 | { |
4529 | 0 | struct elf32_mn10300_link_hash_entry *ret = |
4530 | 0 | (struct elf32_mn10300_link_hash_entry *) entry; |
4531 | | |
4532 | | /* Allocate the structure if it has not already been allocated by a |
4533 | | subclass. */ |
4534 | 0 | if (ret == NULL) |
4535 | 0 | ret = (struct elf32_mn10300_link_hash_entry *) |
4536 | 0 | bfd_hash_allocate (table, sizeof (* ret)); |
4537 | 0 | if (ret == NULL) |
4538 | 0 | return (struct bfd_hash_entry *) ret; |
4539 | | |
4540 | | /* Call the allocation method of the superclass. */ |
4541 | 0 | ret = (struct elf32_mn10300_link_hash_entry *) |
4542 | 0 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
4543 | 0 | table, string); |
4544 | 0 | if (ret != NULL) |
4545 | 0 | { |
4546 | 0 | ret->direct_calls = 0; |
4547 | 0 | ret->stack_size = 0; |
4548 | 0 | ret->movm_args = 0; |
4549 | 0 | ret->movm_stack_size = 0; |
4550 | 0 | ret->flags = 0; |
4551 | 0 | ret->value = 0; |
4552 | 0 | ret->tls_type = GOT_UNKNOWN; |
4553 | 0 | } |
4554 | |
|
4555 | 0 | return (struct bfd_hash_entry *) ret; |
4556 | 0 | } Unexecuted instantiation: elf-m10300.c:elf32_mn10300_link_hash_newfunc Unexecuted instantiation: elf32-am33lin.c:elf32_mn10300_link_hash_newfunc |
4557 | | |
4558 | | static void |
4559 | | _bfd_mn10300_copy_indirect_symbol (struct bfd_link_info * info, |
4560 | | struct elf_link_hash_entry * dir, |
4561 | | struct elf_link_hash_entry * ind) |
4562 | 0 | { |
4563 | 0 | struct elf32_mn10300_link_hash_entry * edir; |
4564 | 0 | struct elf32_mn10300_link_hash_entry * eind; |
4565 | |
|
4566 | 0 | edir = elf_mn10300_hash_entry (dir); |
4567 | 0 | eind = elf_mn10300_hash_entry (ind); |
4568 | |
|
4569 | 0 | if (ind->root.type == bfd_link_hash_indirect |
4570 | 0 | && dir->got.refcount <= 0) |
4571 | 0 | { |
4572 | 0 | edir->tls_type = eind->tls_type; |
4573 | 0 | eind->tls_type = GOT_UNKNOWN; |
4574 | 0 | } |
4575 | 0 | edir->direct_calls = eind->direct_calls; |
4576 | 0 | edir->stack_size = eind->stack_size; |
4577 | 0 | edir->movm_args = eind->movm_args; |
4578 | 0 | edir->movm_stack_size = eind->movm_stack_size; |
4579 | 0 | edir->flags = eind->flags; |
4580 | |
|
4581 | 0 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
4582 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_copy_indirect_symbol Unexecuted instantiation: elf32-am33lin.c:_bfd_mn10300_copy_indirect_symbol |
4583 | | |
4584 | | /* Destroy an mn10300 ELF linker hash table. */ |
4585 | | |
4586 | | static void |
4587 | | elf32_mn10300_link_hash_table_free (bfd *obfd) |
4588 | 0 | { |
4589 | 0 | struct elf32_mn10300_link_hash_table *ret |
4590 | 0 | = (struct elf32_mn10300_link_hash_table *) obfd->link.hash; |
4591 | |
|
4592 | 0 | obfd->link.hash = &ret->static_hash_table->root.root; |
4593 | 0 | _bfd_elf_link_hash_table_free (obfd); |
4594 | 0 | obfd->is_linker_output = true; |
4595 | 0 | obfd->link.hash = &ret->root.root; |
4596 | 0 | _bfd_elf_link_hash_table_free (obfd); |
4597 | 0 | } Unexecuted instantiation: elf-m10300.c:elf32_mn10300_link_hash_table_free Unexecuted instantiation: elf32-am33lin.c:elf32_mn10300_link_hash_table_free |
4598 | | |
4599 | | /* Create an mn10300 ELF linker hash table. */ |
4600 | | |
4601 | | static struct bfd_link_hash_table * |
4602 | | elf32_mn10300_link_hash_table_create (bfd *abfd) |
4603 | 0 | { |
4604 | 0 | struct elf32_mn10300_link_hash_table *ret; |
4605 | 0 | size_t amt = sizeof (* ret); |
4606 | |
|
4607 | 0 | ret = bfd_zmalloc (amt); |
4608 | 0 | if (ret == NULL) |
4609 | 0 | return NULL; |
4610 | | |
4611 | 0 | amt = sizeof (struct elf_link_hash_table); |
4612 | 0 | ret->static_hash_table = bfd_zmalloc (amt); |
4613 | 0 | if (ret->static_hash_table == NULL) |
4614 | 0 | { |
4615 | 0 | free (ret); |
4616 | 0 | return NULL; |
4617 | 0 | } |
4618 | | |
4619 | 0 | if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, |
4620 | 0 | elf32_mn10300_link_hash_newfunc, |
4621 | 0 | sizeof (struct elf32_mn10300_link_hash_entry), |
4622 | 0 | MN10300_ELF_DATA)) |
4623 | 0 | { |
4624 | 0 | free (ret->static_hash_table); |
4625 | 0 | free (ret); |
4626 | 0 | return NULL; |
4627 | 0 | } |
4628 | | |
4629 | 0 | abfd->is_linker_output = false; |
4630 | 0 | abfd->link.hash = NULL; |
4631 | 0 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
4632 | 0 | elf32_mn10300_link_hash_newfunc, |
4633 | 0 | sizeof (struct elf32_mn10300_link_hash_entry), |
4634 | 0 | MN10300_ELF_DATA)) |
4635 | 0 | { |
4636 | 0 | abfd->is_linker_output = true; |
4637 | 0 | abfd->link.hash = &ret->static_hash_table->root.root; |
4638 | 0 | _bfd_elf_link_hash_table_free (abfd); |
4639 | 0 | free (ret); |
4640 | 0 | return NULL; |
4641 | 0 | } |
4642 | 0 | ret->root.root.hash_table_free = elf32_mn10300_link_hash_table_free; |
4643 | |
|
4644 | 0 | ret->tls_ldm_got.offset = -1; |
4645 | |
|
4646 | 0 | return & ret->root.root; |
4647 | 0 | } Unexecuted instantiation: elf-m10300.c:elf32_mn10300_link_hash_table_create Unexecuted instantiation: elf32-am33lin.c:elf32_mn10300_link_hash_table_create |
4648 | | |
4649 | | static unsigned long |
4650 | | elf_mn10300_mach (flagword flags) |
4651 | 0 | { |
4652 | 0 | switch (flags & EF_MN10300_MACH) |
4653 | 0 | { |
4654 | 0 | case E_MN10300_MACH_MN10300: |
4655 | 0 | default: |
4656 | 0 | return bfd_mach_mn10300; |
4657 | | |
4658 | 0 | case E_MN10300_MACH_AM33: |
4659 | 0 | return bfd_mach_am33; |
4660 | | |
4661 | 0 | case E_MN10300_MACH_AM33_2: |
4662 | 0 | return bfd_mach_am33_2; |
4663 | 0 | } |
4664 | 0 | } Unexecuted instantiation: elf-m10300.c:elf_mn10300_mach Unexecuted instantiation: elf32-am33lin.c:elf_mn10300_mach |
4665 | | |
4666 | | /* The final processing done just before writing out a MN10300 ELF object |
4667 | | file. This gets the MN10300 architecture right based on the machine |
4668 | | number. */ |
4669 | | |
4670 | | static bool |
4671 | | _bfd_mn10300_elf_final_write_processing (bfd *abfd) |
4672 | 0 | { |
4673 | 0 | unsigned long val; |
4674 | |
|
4675 | 0 | switch (bfd_get_mach (abfd)) |
4676 | 0 | { |
4677 | 0 | default: |
4678 | 0 | case bfd_mach_mn10300: |
4679 | 0 | val = E_MN10300_MACH_MN10300; |
4680 | 0 | break; |
4681 | | |
4682 | 0 | case bfd_mach_am33: |
4683 | 0 | val = E_MN10300_MACH_AM33; |
4684 | 0 | break; |
4685 | | |
4686 | 0 | case bfd_mach_am33_2: |
4687 | 0 | val = E_MN10300_MACH_AM33_2; |
4688 | 0 | break; |
4689 | 0 | } |
4690 | | |
4691 | 0 | elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); |
4692 | 0 | elf_elfheader (abfd)->e_flags |= val; |
4693 | 0 | return _bfd_elf_final_write_processing (abfd); |
4694 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_elf_final_write_processing Unexecuted instantiation: elf32-am33lin.c:_bfd_am33_elf_final_write_processing |
4695 | | |
4696 | | static bool |
4697 | | _bfd_mn10300_elf_object_p (bfd *abfd) |
4698 | 0 | { |
4699 | 0 | bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, |
4700 | 0 | elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); |
4701 | 0 | return true; |
4702 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_elf_object_p Unexecuted instantiation: elf32-am33lin.c:_bfd_am33_elf_object_p |
4703 | | |
4704 | | /* Merge backend specific data from an object file to the output |
4705 | | object file when linking. */ |
4706 | | |
4707 | | static bool |
4708 | | _bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
4709 | 0 | { |
4710 | 0 | bfd *obfd = info->output_bfd; |
4711 | |
|
4712 | 0 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
4713 | 0 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
4714 | 0 | return true; |
4715 | | |
4716 | 0 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) |
4717 | 0 | && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) |
4718 | 0 | { |
4719 | 0 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), |
4720 | 0 | bfd_get_mach (ibfd))) |
4721 | 0 | return false; |
4722 | 0 | } |
4723 | | |
4724 | 0 | return true; |
4725 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_elf_merge_private_bfd_data Unexecuted instantiation: elf32-am33lin.c:_bfd_am33_elf_merge_private_bfd_data |
4726 | | |
4727 | 0 | #define PLT0_ENTRY_SIZE 15 |
4728 | 0 | #define PLT_ENTRY_SIZE 20 |
4729 | 0 | #define PIC_PLT_ENTRY_SIZE 24 |
4730 | | |
4731 | | static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] = |
4732 | | { |
4733 | | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */ |
4734 | | 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */ |
4735 | | 0xf0, 0xf4, /* jmp (a0) */ |
4736 | | }; |
4737 | | |
4738 | | static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] = |
4739 | | { |
4740 | | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */ |
4741 | | 0xf0, 0xf4, /* jmp (a0) */ |
4742 | | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ |
4743 | | 0xdc, 0, 0, 0, 0, /* jmp .plt0 */ |
4744 | | }; |
4745 | | |
4746 | | static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] = |
4747 | | { |
4748 | | 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */ |
4749 | | 0xf0, 0xf4, /* jmp (a0) */ |
4750 | | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ |
4751 | | 0xf8, 0x22, 8, /* mov (8,a2),a0 */ |
4752 | | 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */ |
4753 | | 0xf0, 0xf4, /* jmp (a0) */ |
4754 | | }; |
4755 | | |
4756 | | /* Return size of the first PLT entry. */ |
4757 | | #define elf_mn10300_sizeof_plt0(info) \ |
4758 | 0 | (bfd_link_pic (info) ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE) |
4759 | | |
4760 | | /* Return size of a PLT entry. */ |
4761 | | #define elf_mn10300_sizeof_plt(info) \ |
4762 | 0 | (bfd_link_pic (info) ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE) |
4763 | | |
4764 | | /* Return offset of the PLT0 address in an absolute PLT entry. */ |
4765 | | #define elf_mn10300_plt_plt0_offset(info) 16 |
4766 | | |
4767 | | /* Return offset of the linker in PLT0 entry. */ |
4768 | | #define elf_mn10300_plt0_linker_offset(info) 2 |
4769 | | |
4770 | | /* Return offset of the GOT id in PLT0 entry. */ |
4771 | | #define elf_mn10300_plt0_gotid_offset(info) 9 |
4772 | | |
4773 | | /* Return offset of the temporary in PLT entry. */ |
4774 | | #define elf_mn10300_plt_temp_offset(info) 8 |
4775 | | |
4776 | | /* Return offset of the symbol in PLT entry. */ |
4777 | | #define elf_mn10300_plt_symbol_offset(info) 2 |
4778 | | |
4779 | | /* Return offset of the relocation in PLT entry. */ |
4780 | | #define elf_mn10300_plt_reloc_offset(info) 11 |
4781 | | |
4782 | | /* The name of the dynamic interpreter. This is put in the .interp |
4783 | | section. */ |
4784 | | |
4785 | 0 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
4786 | | |
4787 | | /* Create dynamic sections when linking against a dynamic object. */ |
4788 | | |
4789 | | static bool |
4790 | | _bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
4791 | 0 | { |
4792 | 0 | flagword flags; |
4793 | 0 | asection * s; |
4794 | 0 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
4795 | 0 | struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info); |
4796 | 0 | int ptralign = 0; |
4797 | |
|
4798 | 0 | switch (bed->s->arch_size) |
4799 | 0 | { |
4800 | 0 | case 32: |
4801 | 0 | ptralign = 2; |
4802 | 0 | break; |
4803 | | |
4804 | 0 | case 64: |
4805 | 0 | ptralign = 3; |
4806 | 0 | break; |
4807 | | |
4808 | 0 | default: |
4809 | 0 | bfd_set_error (bfd_error_bad_value); |
4810 | 0 | return false; |
4811 | 0 | } |
4812 | | |
4813 | | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
4814 | | .rel[a].bss sections. */ |
4815 | 0 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
4816 | 0 | | SEC_LINKER_CREATED); |
4817 | |
|
4818 | 0 | s = bfd_make_section_anyway_with_flags (abfd, |
4819 | 0 | (bed->default_use_rela_p |
4820 | 0 | ? ".rela.plt" : ".rel.plt"), |
4821 | 0 | flags | SEC_READONLY); |
4822 | 0 | htab->root.srelplt = s; |
4823 | 0 | if (s == NULL |
4824 | 0 | || !bfd_set_section_alignment (s, ptralign)) |
4825 | 0 | return false; |
4826 | | |
4827 | 0 | if (! _bfd_mn10300_elf_create_got_section (abfd, info)) |
4828 | 0 | return false; |
4829 | | |
4830 | 0 | if (bed->want_dynbss) |
4831 | 0 | { |
4832 | | /* The .dynbss section is a place to put symbols which are defined |
4833 | | by dynamic objects, are referenced by regular objects, and are |
4834 | | not functions. We must allocate space for them in the process |
4835 | | image and use a R_*_COPY reloc to tell the dynamic linker to |
4836 | | initialize them at run time. The linker script puts the .dynbss |
4837 | | section into the .bss section of the final image. */ |
4838 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", |
4839 | 0 | SEC_ALLOC | SEC_LINKER_CREATED); |
4840 | 0 | if (s == NULL) |
4841 | 0 | return false; |
4842 | | |
4843 | | /* The .rel[a].bss section holds copy relocs. This section is not |
4844 | | normally needed. We need to create it here, though, so that the |
4845 | | linker will map it to an output section. We can't just create it |
4846 | | only if we need it, because we will not know whether we need it |
4847 | | until we have seen all the input files, and the first time the |
4848 | | main linker code calls BFD after examining all the input files |
4849 | | (size_dynamic_sections) the input sections have already been |
4850 | | mapped to the output sections. If the section turns out not to |
4851 | | be needed, we can discard it later. We will never need this |
4852 | | section when generating a shared object, since they do not use |
4853 | | copy relocs. */ |
4854 | 0 | if (! bfd_link_pic (info)) |
4855 | 0 | { |
4856 | 0 | s = bfd_make_section_anyway_with_flags (abfd, |
4857 | 0 | (bed->default_use_rela_p |
4858 | 0 | ? ".rela.bss" : ".rel.bss"), |
4859 | 0 | flags | SEC_READONLY); |
4860 | 0 | if (s == NULL |
4861 | 0 | || !bfd_set_section_alignment (s, ptralign)) |
4862 | 0 | return false; |
4863 | 0 | } |
4864 | 0 | } |
4865 | | |
4866 | 0 | return true; |
4867 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_elf_create_dynamic_sections Unexecuted instantiation: elf32-am33lin.c:_bfd_mn10300_elf_create_dynamic_sections |
4868 | | |
4869 | | /* Adjust a symbol defined by a dynamic object and referenced by a |
4870 | | regular object. The current definition is in some section of the |
4871 | | dynamic object, but we're not including those sections. We have to |
4872 | | change the definition to something the rest of the link can |
4873 | | understand. */ |
4874 | | |
4875 | | static bool |
4876 | | _bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info, |
4877 | | struct elf_link_hash_entry * h) |
4878 | 0 | { |
4879 | 0 | struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info); |
4880 | 0 | bfd * dynobj; |
4881 | 0 | asection * s; |
4882 | |
|
4883 | 0 | dynobj = htab->root.dynobj; |
4884 | | |
4885 | | /* Make sure we know what is going on here. */ |
4886 | 0 | BFD_ASSERT (dynobj != NULL |
4887 | 0 | && (h->needs_plt |
4888 | 0 | || h->is_weakalias |
4889 | 0 | || (h->def_dynamic |
4890 | 0 | && h->ref_regular |
4891 | 0 | && !h->def_regular))); |
4892 | | |
4893 | | /* If this is a function, put it in the procedure linkage table. We |
4894 | | will fill in the contents of the procedure linkage table later, |
4895 | | when we know the address of the .got section. */ |
4896 | 0 | if (h->type == STT_FUNC |
4897 | 0 | || h->needs_plt) |
4898 | 0 | { |
4899 | 0 | if (! bfd_link_pic (info) |
4900 | 0 | && !h->def_dynamic |
4901 | 0 | && !h->ref_dynamic) |
4902 | 0 | { |
4903 | | /* This case can occur if we saw a PLT reloc in an input |
4904 | | file, but the symbol was never referred to by a dynamic |
4905 | | object. In such a case, we don't actually need to build |
4906 | | a procedure linkage table, and we can just do a REL32 |
4907 | | reloc instead. */ |
4908 | 0 | BFD_ASSERT (h->needs_plt); |
4909 | 0 | return true; |
4910 | 0 | } |
4911 | | |
4912 | | /* Make sure this symbol is output as a dynamic symbol. */ |
4913 | 0 | if (h->dynindx == -1) |
4914 | 0 | { |
4915 | 0 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
4916 | 0 | return false; |
4917 | 0 | } |
4918 | | |
4919 | 0 | s = htab->root.splt; |
4920 | 0 | BFD_ASSERT (s != NULL); |
4921 | | |
4922 | | /* If this is the first .plt entry, make room for the special |
4923 | | first entry. */ |
4924 | 0 | if (s->size == 0) |
4925 | 0 | s->size += elf_mn10300_sizeof_plt0 (info); |
4926 | | |
4927 | | /* If this symbol is not defined in a regular file, and we are |
4928 | | not generating a shared library, then set the symbol to this |
4929 | | location in the .plt. This is required to make function |
4930 | | pointers compare as equal between the normal executable and |
4931 | | the shared library. */ |
4932 | 0 | if (! bfd_link_pic (info) |
4933 | 0 | && !h->def_regular) |
4934 | 0 | { |
4935 | 0 | h->root.u.def.section = s; |
4936 | 0 | h->root.u.def.value = s->size; |
4937 | 0 | } |
4938 | |
|
4939 | 0 | h->plt.offset = s->size; |
4940 | | |
4941 | | /* Make room for this entry. */ |
4942 | 0 | s->size += elf_mn10300_sizeof_plt (info); |
4943 | | |
4944 | | /* We also need to make an entry in the .got.plt section, which |
4945 | | will be placed in the .got section by the linker script. */ |
4946 | 0 | s = htab->root.sgotplt; |
4947 | 0 | BFD_ASSERT (s != NULL); |
4948 | 0 | s->size += 4; |
4949 | | |
4950 | | /* We also need to make an entry in the .rela.plt section. */ |
4951 | 0 | s = htab->root.srelplt; |
4952 | 0 | BFD_ASSERT (s != NULL); |
4953 | 0 | s->size += sizeof (Elf32_External_Rela); |
4954 | |
|
4955 | 0 | return true; |
4956 | 0 | } |
4957 | | |
4958 | | /* If this is a weak symbol, and there is a real definition, the |
4959 | | processor independent code will have arranged for us to see the |
4960 | | real definition first, and we can just use the same value. */ |
4961 | 0 | if (h->is_weakalias) |
4962 | 0 | { |
4963 | 0 | struct elf_link_hash_entry *def = weakdef (h); |
4964 | 0 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); |
4965 | 0 | h->root.u.def.section = def->root.u.def.section; |
4966 | 0 | h->root.u.def.value = def->root.u.def.value; |
4967 | 0 | return true; |
4968 | 0 | } |
4969 | | |
4970 | | /* This is a reference to a symbol defined by a dynamic object which |
4971 | | is not a function. */ |
4972 | | |
4973 | | /* If we are creating a shared library, we must presume that the |
4974 | | only references to the symbol are via the global offset table. |
4975 | | For such cases we need not do anything here; the relocations will |
4976 | | be handled correctly by relocate_section. */ |
4977 | 0 | if (bfd_link_pic (info)) |
4978 | 0 | return true; |
4979 | | |
4980 | | /* If there are no references to this symbol that do not use the |
4981 | | GOT, we don't need to generate a copy reloc. */ |
4982 | 0 | if (!h->non_got_ref) |
4983 | 0 | return true; |
4984 | | |
4985 | | /* We must allocate the symbol in our .dynbss section, which will |
4986 | | become part of the .bss section of the executable. There will be |
4987 | | an entry for this symbol in the .dynsym section. The dynamic |
4988 | | object will contain position independent code, so all references |
4989 | | from the dynamic object to this symbol will go through the global |
4990 | | offset table. The dynamic linker will use the .dynsym entry to |
4991 | | determine the address it must put in the global offset table, so |
4992 | | both the dynamic object and the regular object will refer to the |
4993 | | same memory location for the variable. */ |
4994 | | |
4995 | 0 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
4996 | 0 | BFD_ASSERT (s != NULL); |
4997 | | |
4998 | | /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to |
4999 | | copy the initial value out of the dynamic object and into the |
5000 | | runtime process image. We need to remember the offset into the |
5001 | | .rela.bss section we are going to use. */ |
5002 | 0 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5003 | 0 | { |
5004 | 0 | asection * srel; |
5005 | |
|
5006 | 0 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
5007 | 0 | BFD_ASSERT (srel != NULL); |
5008 | 0 | srel->size += sizeof (Elf32_External_Rela); |
5009 | 0 | h->needs_copy = 1; |
5010 | 0 | } |
5011 | |
|
5012 | 0 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5013 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_elf_adjust_dynamic_symbol Unexecuted instantiation: elf32-am33lin.c:_bfd_mn10300_elf_adjust_dynamic_symbol |
5014 | | |
5015 | | /* Set the sizes of the dynamic sections. */ |
5016 | | |
5017 | | static bool |
5018 | | _bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd, |
5019 | | struct bfd_link_info * info) |
5020 | 0 | { |
5021 | 0 | struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info); |
5022 | 0 | bfd * dynobj; |
5023 | 0 | asection * s; |
5024 | 0 | bool relocs; |
5025 | |
|
5026 | 0 | dynobj = htab->root.dynobj; |
5027 | 0 | BFD_ASSERT (dynobj != NULL); |
5028 | |
|
5029 | 0 | if (elf_hash_table (info)->dynamic_sections_created) |
5030 | 0 | { |
5031 | | /* Set the contents of the .interp section to the interpreter. */ |
5032 | 0 | if (bfd_link_executable (info) && !info->nointerp) |
5033 | 0 | { |
5034 | 0 | s = bfd_get_linker_section (dynobj, ".interp"); |
5035 | 0 | BFD_ASSERT (s != NULL); |
5036 | 0 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
5037 | 0 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
5038 | 0 | } |
5039 | 0 | } |
5040 | 0 | else |
5041 | 0 | { |
5042 | | /* We may have created entries in the .rela.got section. |
5043 | | However, if we are not creating the dynamic sections, we will |
5044 | | not actually use these entries. Reset the size of .rela.got, |
5045 | | which will cause it to get stripped from the output file |
5046 | | below. */ |
5047 | 0 | s = htab->root.sgot; |
5048 | 0 | if (s != NULL) |
5049 | 0 | s->size = 0; |
5050 | 0 | } |
5051 | |
|
5052 | 0 | if (htab->tls_ldm_got.refcount > 0) |
5053 | 0 | { |
5054 | 0 | s = htab->root.srelgot; |
5055 | 0 | BFD_ASSERT (s != NULL); |
5056 | 0 | s->size += sizeof (Elf32_External_Rela); |
5057 | 0 | } |
5058 | | |
5059 | | /* The check_relocs and adjust_dynamic_symbol entry points have |
5060 | | determined the sizes of the various dynamic sections. Allocate |
5061 | | memory for them. */ |
5062 | 0 | relocs = false; |
5063 | 0 | for (s = dynobj->sections; s != NULL; s = s->next) |
5064 | 0 | { |
5065 | 0 | const char * name; |
5066 | |
|
5067 | 0 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
5068 | 0 | continue; |
5069 | | |
5070 | | /* It's OK to base decisions on the section name, because none |
5071 | | of the dynobj section names depend upon the input files. */ |
5072 | 0 | name = bfd_section_name (s); |
5073 | |
|
5074 | 0 | if (streq (name, ".plt")) |
5075 | 0 | { |
5076 | | /* Remember whether there is a PLT. */ |
5077 | 0 | ; |
5078 | 0 | } |
5079 | 0 | else if (startswith (name, ".rela")) |
5080 | 0 | { |
5081 | 0 | if (s->size != 0) |
5082 | 0 | { |
5083 | | /* Remember whether there are any reloc sections other |
5084 | | than .rela.plt. */ |
5085 | 0 | if (! streq (name, ".rela.plt")) |
5086 | 0 | relocs = true; |
5087 | | |
5088 | | /* We use the reloc_count field as a counter if we need |
5089 | | to copy relocs into the output file. */ |
5090 | 0 | s->reloc_count = 0; |
5091 | 0 | } |
5092 | 0 | } |
5093 | 0 | else if (! startswith (name, ".got") |
5094 | 0 | && ! streq (name, ".dynbss")) |
5095 | | /* It's not one of our sections, so don't allocate space. */ |
5096 | 0 | continue; |
5097 | | |
5098 | 0 | if (s->size == 0) |
5099 | 0 | { |
5100 | | /* If we don't need this section, strip it from the |
5101 | | output file. This is mostly to handle .rela.bss and |
5102 | | .rela.plt. We must create both sections in |
5103 | | create_dynamic_sections, because they must be created |
5104 | | before the linker maps input sections to output |
5105 | | sections. The linker does that before |
5106 | | adjust_dynamic_symbol is called, and it is that |
5107 | | function which decides whether anything needs to go |
5108 | | into these sections. */ |
5109 | 0 | s->flags |= SEC_EXCLUDE; |
5110 | 0 | continue; |
5111 | 0 | } |
5112 | | |
5113 | 0 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5114 | 0 | continue; |
5115 | | |
5116 | | /* Allocate memory for the section contents. We use bfd_zalloc |
5117 | | here in case unused entries are not reclaimed before the |
5118 | | section's contents are written out. This should not happen, |
5119 | | but this way if it does, we get a R_MN10300_NONE reloc |
5120 | | instead of garbage. */ |
5121 | 0 | s->contents = bfd_zalloc (dynobj, s->size); |
5122 | 0 | if (s->contents == NULL) |
5123 | 0 | return false; |
5124 | 0 | } |
5125 | | |
5126 | 0 | return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs); |
5127 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_elf_size_dynamic_sections Unexecuted instantiation: elf32-am33lin.c:_bfd_mn10300_elf_size_dynamic_sections |
5128 | | |
5129 | | /* Finish up dynamic symbol handling. We set the contents of various |
5130 | | dynamic sections here. */ |
5131 | | |
5132 | | static bool |
5133 | | _bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd, |
5134 | | struct bfd_link_info * info, |
5135 | | struct elf_link_hash_entry * h, |
5136 | | Elf_Internal_Sym * sym) |
5137 | 0 | { |
5138 | 0 | struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info); |
5139 | 0 | bfd * dynobj; |
5140 | |
|
5141 | 0 | dynobj = htab->root.dynobj; |
5142 | |
|
5143 | 0 | if (h->plt.offset != (bfd_vma) -1) |
5144 | 0 | { |
5145 | 0 | asection * splt; |
5146 | 0 | asection * sgot; |
5147 | 0 | asection * srel; |
5148 | 0 | bfd_vma plt_index; |
5149 | 0 | bfd_vma got_offset; |
5150 | 0 | Elf_Internal_Rela rel; |
5151 | | |
5152 | | /* This symbol has an entry in the procedure linkage table. Set |
5153 | | it up. */ |
5154 | |
|
5155 | 0 | BFD_ASSERT (h->dynindx != -1); |
5156 | |
|
5157 | 0 | splt = htab->root.splt; |
5158 | 0 | sgot = htab->root.sgotplt; |
5159 | 0 | srel = htab->root.srelplt; |
5160 | 0 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
5161 | | |
5162 | | /* Get the index in the procedure linkage table which |
5163 | | corresponds to this symbol. This is the index of this symbol |
5164 | | in all the symbols for which we are making plt entries. The |
5165 | | first entry in the procedure linkage table is reserved. */ |
5166 | 0 | plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info)) |
5167 | 0 | / elf_mn10300_sizeof_plt (info)); |
5168 | | |
5169 | | /* Get the offset into the .got table of the entry that |
5170 | | corresponds to this function. Each .got entry is 4 bytes. |
5171 | | The first three are reserved. */ |
5172 | 0 | got_offset = (plt_index + 3) * 4; |
5173 | | |
5174 | | /* Fill in the entry in the procedure linkage table. */ |
5175 | 0 | if (! bfd_link_pic (info)) |
5176 | 0 | { |
5177 | 0 | memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry, |
5178 | 0 | elf_mn10300_sizeof_plt (info)); |
5179 | 0 | bfd_put_32 (output_bfd, |
5180 | 0 | (sgot->output_section->vma |
5181 | 0 | + sgot->output_offset |
5182 | 0 | + got_offset), |
5183 | 0 | (splt->contents + h->plt.offset |
5184 | 0 | + elf_mn10300_plt_symbol_offset (info))); |
5185 | |
|
5186 | 0 | bfd_put_32 (output_bfd, |
5187 | 0 | (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)), |
5188 | 0 | (splt->contents + h->plt.offset |
5189 | 0 | + elf_mn10300_plt_plt0_offset (info))); |
5190 | 0 | } |
5191 | 0 | else |
5192 | 0 | { |
5193 | 0 | memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry, |
5194 | 0 | elf_mn10300_sizeof_plt (info)); |
5195 | |
|
5196 | 0 | bfd_put_32 (output_bfd, got_offset, |
5197 | 0 | (splt->contents + h->plt.offset |
5198 | 0 | + elf_mn10300_plt_symbol_offset (info))); |
5199 | 0 | } |
5200 | |
|
5201 | 0 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), |
5202 | 0 | (splt->contents + h->plt.offset |
5203 | 0 | + elf_mn10300_plt_reloc_offset (info))); |
5204 | | |
5205 | | /* Fill in the entry in the global offset table. */ |
5206 | 0 | bfd_put_32 (output_bfd, |
5207 | 0 | (splt->output_section->vma |
5208 | 0 | + splt->output_offset |
5209 | 0 | + h->plt.offset |
5210 | 0 | + elf_mn10300_plt_temp_offset (info)), |
5211 | 0 | sgot->contents + got_offset); |
5212 | | |
5213 | | /* Fill in the entry in the .rela.plt section. */ |
5214 | 0 | rel.r_offset = (sgot->output_section->vma |
5215 | 0 | + sgot->output_offset |
5216 | 0 | + got_offset); |
5217 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT); |
5218 | 0 | rel.r_addend = 0; |
5219 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &rel, |
5220 | 0 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
5221 | 0 | + plt_index)); |
5222 | |
|
5223 | 0 | if (!h->def_regular) |
5224 | | /* Mark the symbol as undefined, rather than as defined in |
5225 | | the .plt section. Leave the value alone. */ |
5226 | 0 | sym->st_shndx = SHN_UNDEF; |
5227 | 0 | } |
5228 | |
|
5229 | 0 | if (h->got.offset != (bfd_vma) -1) |
5230 | 0 | { |
5231 | 0 | asection * sgot; |
5232 | 0 | asection * srel; |
5233 | 0 | Elf_Internal_Rela rel; |
5234 | | |
5235 | | /* This symbol has an entry in the global offset table. Set it up. */ |
5236 | 0 | sgot = htab->root.sgot; |
5237 | 0 | srel = htab->root.srelgot; |
5238 | 0 | BFD_ASSERT (sgot != NULL && srel != NULL); |
5239 | |
|
5240 | 0 | rel.r_offset = (sgot->output_section->vma |
5241 | 0 | + sgot->output_offset |
5242 | 0 | + (h->got.offset & ~1)); |
5243 | |
|
5244 | 0 | switch (elf_mn10300_hash_entry (h)->tls_type) |
5245 | 0 | { |
5246 | 0 | case GOT_TLS_GD: |
5247 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
5248 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset + 4); |
5249 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_TLS_DTPMOD); |
5250 | 0 | rel.r_addend = 0; |
5251 | 0 | bfd_elf32_swap_reloca_out (output_bfd, & rel, |
5252 | 0 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
5253 | 0 | + srel->reloc_count)); |
5254 | 0 | ++ srel->reloc_count; |
5255 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_TLS_DTPOFF); |
5256 | 0 | rel.r_offset += 4; |
5257 | 0 | rel.r_addend = 0; |
5258 | 0 | break; |
5259 | | |
5260 | 0 | case GOT_TLS_IE: |
5261 | | /* We originally stored the addend in the GOT, but at this |
5262 | | point, we want to move it to the reloc instead as that's |
5263 | | where the dynamic linker wants it. */ |
5264 | 0 | rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + h->got.offset); |
5265 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
5266 | 0 | if (h->dynindx == -1) |
5267 | 0 | rel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_TPOFF); |
5268 | 0 | else |
5269 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_TLS_TPOFF); |
5270 | 0 | break; |
5271 | | |
5272 | 0 | default: |
5273 | | /* If this is a -Bsymbolic link, and the symbol is defined |
5274 | | locally, we just want to emit a RELATIVE reloc. Likewise if |
5275 | | the symbol was forced to be local because of a version file. |
5276 | | The entry in the global offset table will already have been |
5277 | | initialized in the relocate_section function. */ |
5278 | 0 | if (bfd_link_pic (info) |
5279 | 0 | && (info->symbolic || h->dynindx == -1) |
5280 | 0 | && h->def_regular) |
5281 | 0 | { |
5282 | 0 | rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); |
5283 | 0 | rel.r_addend = (h->root.u.def.value |
5284 | 0 | + h->root.u.def.section->output_section->vma |
5285 | 0 | + h->root.u.def.section->output_offset); |
5286 | 0 | } |
5287 | 0 | else |
5288 | 0 | { |
5289 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
5290 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT); |
5291 | 0 | rel.r_addend = 0; |
5292 | 0 | } |
5293 | 0 | } |
5294 | | |
5295 | 0 | if (ELF32_R_TYPE (rel.r_info) != R_MN10300_NONE) |
5296 | 0 | { |
5297 | 0 | bfd_elf32_swap_reloca_out (output_bfd, &rel, |
5298 | 0 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
5299 | 0 | + srel->reloc_count)); |
5300 | 0 | ++ srel->reloc_count; |
5301 | 0 | } |
5302 | 0 | } |
5303 | | |
5304 | 0 | if (h->needs_copy) |
5305 | 0 | { |
5306 | 0 | asection * s; |
5307 | 0 | Elf_Internal_Rela rel; |
5308 | | |
5309 | | /* This symbol needs a copy reloc. Set it up. */ |
5310 | 0 | BFD_ASSERT (h->dynindx != -1 |
5311 | 0 | && (h->root.type == bfd_link_hash_defined |
5312 | 0 | || h->root.type == bfd_link_hash_defweak)); |
5313 | |
|
5314 | 0 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
5315 | 0 | BFD_ASSERT (s != NULL); |
5316 | |
|
5317 | 0 | rel.r_offset = (h->root.u.def.value |
5318 | 0 | + h->root.u.def.section->output_section->vma |
5319 | 0 | + h->root.u.def.section->output_offset); |
5320 | 0 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY); |
5321 | 0 | rel.r_addend = 0; |
5322 | 0 | bfd_elf32_swap_reloca_out (output_bfd, & rel, |
5323 | 0 | (bfd_byte *) ((Elf32_External_Rela *) s->contents |
5324 | 0 | + s->reloc_count)); |
5325 | 0 | ++ s->reloc_count; |
5326 | 0 | } |
5327 | | |
5328 | | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
5329 | 0 | if (h == elf_hash_table (info)->hdynamic |
5330 | 0 | || h == elf_hash_table (info)->hgot) |
5331 | 0 | sym->st_shndx = SHN_ABS; |
5332 | |
|
5333 | 0 | return true; |
5334 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_elf_finish_dynamic_symbol Unexecuted instantiation: elf32-am33lin.c:_bfd_mn10300_elf_finish_dynamic_symbol |
5335 | | |
5336 | | /* Finish up the dynamic sections. */ |
5337 | | |
5338 | | static bool |
5339 | | _bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd, |
5340 | | struct bfd_link_info * info) |
5341 | 0 | { |
5342 | 0 | bfd * dynobj; |
5343 | 0 | asection * sgot; |
5344 | 0 | asection * sdyn; |
5345 | 0 | struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info); |
5346 | |
|
5347 | 0 | dynobj = htab->root.dynobj; |
5348 | 0 | sgot = htab->root.sgotplt; |
5349 | 0 | BFD_ASSERT (sgot != NULL); |
5350 | 0 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5351 | |
|
5352 | 0 | if (elf_hash_table (info)->dynamic_sections_created) |
5353 | 0 | { |
5354 | 0 | asection * splt; |
5355 | 0 | Elf32_External_Dyn * dyncon; |
5356 | 0 | Elf32_External_Dyn * dynconend; |
5357 | |
|
5358 | 0 | BFD_ASSERT (sdyn != NULL); |
5359 | |
|
5360 | 0 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
5361 | 0 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
5362 | |
|
5363 | 0 | for (; dyncon < dynconend; dyncon++) |
5364 | 0 | { |
5365 | 0 | Elf_Internal_Dyn dyn; |
5366 | 0 | asection * s; |
5367 | |
|
5368 | 0 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
5369 | |
|
5370 | 0 | switch (dyn.d_tag) |
5371 | 0 | { |
5372 | 0 | default: |
5373 | 0 | break; |
5374 | | |
5375 | 0 | case DT_PLTGOT: |
5376 | 0 | s = htab->root.sgot; |
5377 | 0 | goto get_vma; |
5378 | | |
5379 | 0 | case DT_JMPREL: |
5380 | 0 | s = htab->root.srelplt; |
5381 | 0 | get_vma: |
5382 | 0 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
5383 | 0 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5384 | 0 | break; |
5385 | | |
5386 | 0 | case DT_PLTRELSZ: |
5387 | 0 | s = htab->root.srelplt; |
5388 | 0 | dyn.d_un.d_val = s->size; |
5389 | 0 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5390 | 0 | break; |
5391 | 0 | } |
5392 | 0 | } |
5393 | | |
5394 | | /* Fill in the first entry in the procedure linkage table. */ |
5395 | 0 | splt = htab->root.splt; |
5396 | 0 | if (splt && splt->size > 0) |
5397 | 0 | { |
5398 | 0 | if (bfd_link_pic (info)) |
5399 | 0 | { |
5400 | 0 | memcpy (splt->contents, elf_mn10300_pic_plt_entry, |
5401 | 0 | elf_mn10300_sizeof_plt (info)); |
5402 | 0 | } |
5403 | 0 | else |
5404 | 0 | { |
5405 | 0 | memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE); |
5406 | 0 | bfd_put_32 (output_bfd, |
5407 | 0 | sgot->output_section->vma + sgot->output_offset + 4, |
5408 | 0 | splt->contents + elf_mn10300_plt0_gotid_offset (info)); |
5409 | 0 | bfd_put_32 (output_bfd, |
5410 | 0 | sgot->output_section->vma + sgot->output_offset + 8, |
5411 | 0 | splt->contents + elf_mn10300_plt0_linker_offset (info)); |
5412 | 0 | } |
5413 | | |
5414 | | /* UnixWare sets the entsize of .plt to 4, although that doesn't |
5415 | | really seem like the right value. */ |
5416 | 0 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; |
5417 | | |
5418 | | /* UnixWare sets the entsize of .plt to 4, but this is incorrect |
5419 | | as it means that the size of the PLT0 section (15 bytes) is not |
5420 | | a multiple of the sh_entsize. Some ELF tools flag this as an |
5421 | | error. We could pad PLT0 to 16 bytes, but that would introduce |
5422 | | compatibilty issues with previous toolchains, so instead we |
5423 | | just set the entry size to 1. */ |
5424 | 0 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 1; |
5425 | 0 | } |
5426 | 0 | } |
5427 | | |
5428 | | /* Fill in the first three entries in the global offset table. */ |
5429 | 0 | if (sgot->size > 0) |
5430 | 0 | { |
5431 | 0 | if (sdyn == NULL) |
5432 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); |
5433 | 0 | else |
5434 | 0 | bfd_put_32 (output_bfd, |
5435 | 0 | sdyn->output_section->vma + sdyn->output_offset, |
5436 | 0 | sgot->contents); |
5437 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); |
5438 | 0 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); |
5439 | 0 | } |
5440 | |
|
5441 | 0 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
5442 | |
|
5443 | 0 | return true; |
5444 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_elf_finish_dynamic_sections Unexecuted instantiation: elf32-am33lin.c:_bfd_mn10300_elf_finish_dynamic_sections |
5445 | | |
5446 | | /* Classify relocation types, such that combreloc can sort them |
5447 | | properly. */ |
5448 | | |
5449 | | static enum elf_reloc_type_class |
5450 | | _bfd_mn10300_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
5451 | | const asection *rel_sec ATTRIBUTE_UNUSED, |
5452 | | const Elf_Internal_Rela *rela) |
5453 | 0 | { |
5454 | 0 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
5455 | 0 | { |
5456 | 0 | case R_MN10300_RELATIVE: return reloc_class_relative; |
5457 | 0 | case R_MN10300_JMP_SLOT: return reloc_class_plt; |
5458 | 0 | case R_MN10300_COPY: return reloc_class_copy; |
5459 | 0 | default: return reloc_class_normal; |
5460 | 0 | } |
5461 | 0 | } Unexecuted instantiation: elf-m10300.c:_bfd_mn10300_elf_reloc_type_class Unexecuted instantiation: elf32-am33lin.c:_bfd_mn10300_elf_reloc_type_class |
5462 | | |
5463 | | /* Allocate space for an MN10300 extension to the bfd elf data structure. */ |
5464 | | |
5465 | | static bool |
5466 | | mn10300_elf_mkobject (bfd *abfd) |
5467 | 60 | { |
5468 | 60 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_mn10300_obj_tdata), |
5469 | 60 | MN10300_ELF_DATA); |
5470 | 60 | } elf-m10300.c:mn10300_elf_mkobject Line | Count | Source | 5467 | 30 | { | 5468 | 30 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_mn10300_obj_tdata), | 5469 | 30 | MN10300_ELF_DATA); | 5470 | 30 | } |
elf32-am33lin.c:mn10300_elf_mkobject Line | Count | Source | 5467 | 30 | { | 5468 | 30 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_mn10300_obj_tdata), | 5469 | 30 | MN10300_ELF_DATA); | 5470 | 30 | } |
|
5471 | | |
5472 | | #define bfd_elf32_mkobject mn10300_elf_mkobject |
5473 | | |
5474 | | #ifndef ELF_ARCH |
5475 | | #define TARGET_LITTLE_SYM mn10300_elf32_vec |
5476 | | #define TARGET_LITTLE_NAME "elf32-mn10300" |
5477 | | #define ELF_ARCH bfd_arch_mn10300 |
5478 | | #define ELF_TARGET_ID MN10300_ELF_DATA |
5479 | | #define ELF_MACHINE_CODE EM_MN10300 |
5480 | | #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 |
5481 | | #define ELF_MAXPAGESIZE 0x1000 |
5482 | | #endif |
5483 | | |
5484 | | #define elf_info_to_howto mn10300_info_to_howto |
5485 | | #define elf_info_to_howto_rel NULL |
5486 | | #define elf_backend_can_gc_sections 1 |
5487 | | #define elf_backend_rela_normal 1 |
5488 | | #define elf_backend_check_relocs mn10300_elf_check_relocs |
5489 | | #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook |
5490 | | #define elf_backend_relocate_section mn10300_elf_relocate_section |
5491 | | #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section |
5492 | | #define bfd_elf32_bfd_get_relocated_section_contents \ |
5493 | | mn10300_elf_get_relocated_section_contents |
5494 | | #define bfd_elf32_bfd_link_hash_table_create \ |
5495 | | elf32_mn10300_link_hash_table_create |
5496 | | |
5497 | | #ifndef elf_symbol_leading_char |
5498 | | #define elf_symbol_leading_char '_' |
5499 | | #endif |
5500 | | |
5501 | | /* So we can set bits in e_flags. */ |
5502 | | #define elf_backend_final_write_processing \ |
5503 | | _bfd_mn10300_elf_final_write_processing |
5504 | | #define elf_backend_object_p _bfd_mn10300_elf_object_p |
5505 | | |
5506 | | #define bfd_elf32_bfd_merge_private_bfd_data \ |
5507 | | _bfd_mn10300_elf_merge_private_bfd_data |
5508 | | |
5509 | | #define elf_backend_can_gc_sections 1 |
5510 | | #define elf_backend_create_dynamic_sections \ |
5511 | | _bfd_mn10300_elf_create_dynamic_sections |
5512 | | #define elf_backend_adjust_dynamic_symbol \ |
5513 | | _bfd_mn10300_elf_adjust_dynamic_symbol |
5514 | | #define elf_backend_size_dynamic_sections \ |
5515 | | _bfd_mn10300_elf_size_dynamic_sections |
5516 | | #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all |
5517 | | #define elf_backend_finish_dynamic_symbol \ |
5518 | | _bfd_mn10300_elf_finish_dynamic_symbol |
5519 | | #define elf_backend_finish_dynamic_sections \ |
5520 | | _bfd_mn10300_elf_finish_dynamic_sections |
5521 | | #define elf_backend_copy_indirect_symbol \ |
5522 | | _bfd_mn10300_copy_indirect_symbol |
5523 | | #define elf_backend_reloc_type_class \ |
5524 | | _bfd_mn10300_elf_reloc_type_class |
5525 | | |
5526 | | #define elf_backend_want_got_plt 1 |
5527 | | #define elf_backend_plt_readonly 1 |
5528 | | #define elf_backend_want_plt_sym 0 |
5529 | | #define elf_backend_got_header_size 12 |
5530 | | #define elf_backend_dtrel_excludes_plt 1 |
5531 | | |
5532 | | #include "elf32-target.h" |