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[deliverable/binutils-gdb.git] / bfd / elf32-cr16.c
1 /* BFD back-end for National Semiconductor's CR16 ELF
2 Copyright 2007, 2008, 2009 Free Software Foundation, Inc.
3 Written by M R Swami Reddy.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software Foundation,
19 Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "bfdlink.h"
24 #include "libbfd.h"
25 #include "libiberty.h"
26 #include "elf-bfd.h"
27 #include "elf/cr16.h"
28
29 /* The cr16 linker needs to keep track of the number of relocs that
30 it decides to copy in check_relocs for each symbol. This is so
31 that it can discard PC relative relocs if it doesn't need them when
32 linking with -Bsymbolic. We store the information in a field
33 extending the regular ELF linker hash table. */
34
35 struct elf32_cr16_link_hash_entry {
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 /* Used to mark functions which have had redundant parts of their
61 prologue deleted. */
62 #define CR16_DELETED_PROLOGUE_BYTES 0x1
63 unsigned char flags;
64
65 /* Calculated value. */
66 bfd_vma value;
67 };
68
69 /* We derive a hash table from the main elf linker hash table so
70 we can store state variables and a secondary hash table without
71 resorting to global variables. */
72 struct elf32_cr16_link_hash_table {
73 /* The main hash table. */
74 struct elf_link_hash_table root;
75
76 /* A hash table for static functions. We could derive a new hash table
77 instead of using the full elf32_cr16_link_hash_table if we wanted
78 to save some memory. */
79 struct elf32_cr16_link_hash_table *static_hash_table;
80
81 /* Random linker state flags. */
82 #define CR16_HASH_ENTRIES_INITIALIZED 0x1
83 char flags;
84 };
85
86 /* For CR16 linker hash table. */
87
88 /* Get the CR16 ELF linker hash table from a link_info structure. */
89
90 #define elf32_cr16_hash_table(p) \
91 ((struct elf32_cr16_link_hash_table *) ((p)->hash))
92
93 #define elf32_cr16_link_hash_traverse(table, func, info) \
94 (elf_link_hash_traverse \
95 (&(table)->root, \
96 (bfd_boolean (*) ((struct elf_link_hash_entry *, void *))) (func), (info)))
97
98 /* cr16_reloc_map array maps BFD relocation enum into a CRGAS relocation type. */
99
100 struct cr16_reloc_map
101 {
102 bfd_reloc_code_real_type bfd_reloc_enum; /* BFD relocation enum. */
103 unsigned short cr16_reloc_type; /* CR16 relocation type. */
104 };
105
106 static const struct cr16_reloc_map cr16_reloc_map[R_CR16_MAX] =
107 {
108 {BFD_RELOC_NONE, R_CR16_NONE},
109 {BFD_RELOC_CR16_NUM8, R_CR16_NUM8},
110 {BFD_RELOC_CR16_NUM16, R_CR16_NUM16},
111 {BFD_RELOC_CR16_NUM32, R_CR16_NUM32},
112 {BFD_RELOC_CR16_NUM32a, R_CR16_NUM32a},
113 {BFD_RELOC_CR16_REGREL4, R_CR16_REGREL4},
114 {BFD_RELOC_CR16_REGREL4a, R_CR16_REGREL4a},
115 {BFD_RELOC_CR16_REGREL14, R_CR16_REGREL14},
116 {BFD_RELOC_CR16_REGREL14a, R_CR16_REGREL14a},
117 {BFD_RELOC_CR16_REGREL16, R_CR16_REGREL16},
118 {BFD_RELOC_CR16_REGREL20, R_CR16_REGREL20},
119 {BFD_RELOC_CR16_REGREL20a, R_CR16_REGREL20a},
120 {BFD_RELOC_CR16_ABS20, R_CR16_ABS20},
121 {BFD_RELOC_CR16_ABS24, R_CR16_ABS24},
122 {BFD_RELOC_CR16_IMM4, R_CR16_IMM4},
123 {BFD_RELOC_CR16_IMM8, R_CR16_IMM8},
124 {BFD_RELOC_CR16_IMM16, R_CR16_IMM16},
125 {BFD_RELOC_CR16_IMM20, R_CR16_IMM20},
126 {BFD_RELOC_CR16_IMM24, R_CR16_IMM24},
127 {BFD_RELOC_CR16_IMM32, R_CR16_IMM32},
128 {BFD_RELOC_CR16_IMM32a, R_CR16_IMM32a},
129 {BFD_RELOC_CR16_DISP4, R_CR16_DISP4},
130 {BFD_RELOC_CR16_DISP8, R_CR16_DISP8},
131 {BFD_RELOC_CR16_DISP16, R_CR16_DISP16},
132 {BFD_RELOC_CR16_DISP24, R_CR16_DISP24},
133 {BFD_RELOC_CR16_DISP24a, R_CR16_DISP24a},
134 {BFD_RELOC_CR16_SWITCH8, R_CR16_SWITCH8},
135 {BFD_RELOC_CR16_SWITCH16, R_CR16_SWITCH16},
136 {BFD_RELOC_CR16_SWITCH32, R_CR16_SWITCH32},
137 {BFD_RELOC_CR16_GOT_REGREL20, R_CR16_GOT_REGREL20},
138 {BFD_RELOC_CR16_GOTC_REGREL20, R_CR16_GOTC_REGREL20},
139 {BFD_RELOC_CR16_GLOB_DAT, R_CR16_GLOB_DAT}
140 };
141
142 static reloc_howto_type cr16_elf_howto_table[] =
143 {
144 HOWTO (R_CR16_NONE, /* type */
145 0, /* rightshift */
146 2, /* size */
147 32, /* bitsize */
148 FALSE, /* pc_relative */
149 0, /* bitpos */
150 complain_overflow_dont, /* complain_on_overflow */
151 bfd_elf_generic_reloc, /* special_function */
152 "R_CR16_NONE", /* name */
153 FALSE, /* partial_inplace */
154 0, /* src_mask */
155 0, /* dst_mask */
156 FALSE), /* pcrel_offset */
157
158 HOWTO (R_CR16_NUM8, /* type */
159 0, /* rightshift */
160 0, /* size */
161 8, /* bitsize */
162 FALSE, /* pc_relative */
163 0, /* bitpos */
164 complain_overflow_bitfield,/* complain_on_overflow */
165 bfd_elf_generic_reloc, /* special_function */
166 "R_CR16_NUM8", /* name */
167 FALSE, /* partial_inplace */
168 0x0, /* src_mask */
169 0xff, /* dst_mask */
170 FALSE), /* pcrel_offset */
171
172 HOWTO (R_CR16_NUM16, /* type */
173 0, /* rightshift */
174 1, /* size */
175 16, /* bitsize */
176 FALSE, /* pc_relative */
177 0, /* bitpos */
178 complain_overflow_bitfield,/* complain_on_overflow */
179 bfd_elf_generic_reloc, /* special_function */
180 "R_CR16_NUM16", /* name */
181 FALSE, /* partial_inplace */
182 0x0, /* src_mask */
183 0xffff, /* dst_mask */
184 FALSE), /* pcrel_offset */
185
186 HOWTO (R_CR16_NUM32, /* type */
187 0, /* rightshift */
188 2, /* size */
189 32, /* bitsize */
190 FALSE, /* pc_relative */
191 0, /* bitpos */
192 complain_overflow_bitfield,/* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_CR16_NUM32", /* name */
195 FALSE, /* partial_inplace */
196 0x0, /* src_mask */
197 0xffffffff, /* dst_mask */
198 FALSE), /* pcrel_offset */
199
200 HOWTO (R_CR16_NUM32a, /* type */
201 1, /* rightshift */
202 2, /* size */
203 32, /* bitsize */
204 FALSE, /* pc_relative */
205 0, /* bitpos */
206 complain_overflow_bitfield,/* complain_on_overflow */
207 bfd_elf_generic_reloc, /* special_function */
208 "R_CR16_NUM32a", /* name */
209 FALSE, /* partial_inplace */
210 0x0, /* src_mask */
211 0xffffffff, /* dst_mask */
212 FALSE), /* pcrel_offset */
213
214 HOWTO (R_CR16_REGREL4, /* type */
215 0, /* rightshift */
216 0, /* size */
217 4, /* bitsize */
218 FALSE, /* pc_relative */
219 0, /* bitpos */
220 complain_overflow_bitfield,/* complain_on_overflow */
221 bfd_elf_generic_reloc, /* special_function */
222 "R_CR16_REGREL4", /* name */
223 FALSE, /* partial_inplace */
224 0x0, /* src_mask */
225 0xf, /* dst_mask */
226 FALSE), /* pcrel_offset */
227
228 HOWTO (R_CR16_REGREL4a, /* type */
229 0, /* rightshift */
230 0, /* size */
231 4, /* bitsize */
232 FALSE, /* pc_relative */
233 0, /* bitpos */
234 complain_overflow_bitfield,/* complain_on_overflow */
235 bfd_elf_generic_reloc, /* special_function */
236 "R_CR16_REGREL4a", /* name */
237 FALSE, /* partial_inplace */
238 0x0, /* src_mask */
239 0xf, /* dst_mask */
240 FALSE), /* pcrel_offset */
241
242 HOWTO (R_CR16_REGREL14, /* type */
243 0, /* rightshift */
244 1, /* size */
245 14, /* bitsize */
246 FALSE, /* pc_relative */
247 0, /* bitpos */
248 complain_overflow_bitfield,/* complain_on_overflow */
249 bfd_elf_generic_reloc, /* special_function */
250 "R_CR16_REGREL14", /* name */
251 FALSE, /* partial_inplace */
252 0x0, /* src_mask */
253 0x3fff, /* dst_mask */
254 FALSE), /* pcrel_offset */
255
256 HOWTO (R_CR16_REGREL14a, /* type */
257 0, /* rightshift */
258 1, /* size */
259 14, /* bitsize */
260 FALSE, /* pc_relative */
261 0, /* bitpos */
262 complain_overflow_bitfield,/* complain_on_overflow */
263 bfd_elf_generic_reloc, /* special_function */
264 "R_CR16_REGREL14a", /* name */
265 FALSE, /* partial_inplace */
266 0x0, /* src_mask */
267 0x3fff, /* dst_mask */
268 FALSE), /* pcrel_offset */
269
270 HOWTO (R_CR16_REGREL16, /* type */
271 0, /* rightshift */
272 1, /* size */
273 16, /* bitsize */
274 FALSE, /* pc_relative */
275 0, /* bitpos */
276 complain_overflow_bitfield,/* complain_on_overflow */
277 bfd_elf_generic_reloc, /* special_function */
278 "R_CR16_REGREL16", /* name */
279 FALSE, /* partial_inplace */
280 0x0, /* src_mask */
281 0xffff, /* dst_mask */
282 FALSE), /* pcrel_offset */
283
284 HOWTO (R_CR16_REGREL20, /* type */
285 0, /* rightshift */
286 2, /* size */
287 20, /* bitsize */
288 FALSE, /* pc_relative */
289 0, /* bitpos */
290 complain_overflow_bitfield,/* complain_on_overflow */
291 bfd_elf_generic_reloc, /* special_function */
292 "R_CR16_REGREL20", /* name */
293 FALSE, /* partial_inplace */
294 0x0, /* src_mask */
295 0xfffff, /* dst_mask */
296 FALSE), /* pcrel_offset */
297
298 HOWTO (R_CR16_REGREL20a, /* type */
299 0, /* rightshift */
300 2, /* size */
301 20, /* bitsize */
302 FALSE, /* pc_relative */
303 0, /* bitpos */
304 complain_overflow_bitfield,/* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_CR16_REGREL20a", /* name */
307 FALSE, /* partial_inplace */
308 0x0, /* src_mask */
309 0xfffff, /* dst_mask */
310 FALSE), /* pcrel_offset */
311
312 HOWTO (R_CR16_ABS20, /* type */
313 0, /* rightshift */
314 2, /* size */
315 20, /* bitsize */
316 FALSE, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_bitfield,/* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_CR16_ABS20", /* name */
321 FALSE, /* partial_inplace */
322 0x0, /* src_mask */
323 0xfffff, /* dst_mask */
324 FALSE), /* pcrel_offset */
325
326 HOWTO (R_CR16_ABS24, /* type */
327 0, /* rightshift */
328 2, /* size */
329 24, /* bitsize */
330 FALSE, /* pc_relative */
331 0, /* bitpos */
332 complain_overflow_bitfield,/* complain_on_overflow */
333 bfd_elf_generic_reloc, /* special_function */
334 "R_CR16_ABS24", /* name */
335 FALSE, /* partial_inplace */
336 0x0, /* src_mask */
337 0xffffff, /* dst_mask */
338 FALSE), /* pcrel_offset */
339
340 HOWTO (R_CR16_IMM4, /* type */
341 0, /* rightshift */
342 0, /* size */
343 4, /* bitsize */
344 FALSE, /* pc_relative */
345 0, /* bitpos */
346 complain_overflow_bitfield,/* complain_on_overflow */
347 bfd_elf_generic_reloc, /* special_function */
348 "R_CR16_IMM4", /* name */
349 FALSE, /* partial_inplace */
350 0x0, /* src_mask */
351 0xf, /* dst_mask */
352 FALSE), /* pcrel_offset */
353
354 HOWTO (R_CR16_IMM8, /* type */
355 0, /* rightshift */
356 0, /* size */
357 8, /* bitsize */
358 FALSE, /* pc_relative */
359 0, /* bitpos */
360 complain_overflow_bitfield,/* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_CR16_IMM8", /* name */
363 FALSE, /* partial_inplace */
364 0x0, /* src_mask */
365 0xff, /* dst_mask */
366 FALSE), /* pcrel_offset */
367
368 HOWTO (R_CR16_IMM16, /* type */
369 0, /* rightshift */
370 1, /* size */
371 16, /* bitsize */
372 FALSE, /* pc_relative */
373 0, /* bitpos */
374 complain_overflow_bitfield,/* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_CR16_IMM16", /* name */
377 FALSE, /* partial_inplace */
378 0x0, /* src_mask */
379 0xffff, /* dst_mask */
380 FALSE), /* pcrel_offset */
381
382 HOWTO (R_CR16_IMM20, /* type */
383 0, /* rightshift */
384 2, /* size */
385 20, /* bitsize */
386 FALSE, /* pc_relative */
387 0, /* bitpos */
388 complain_overflow_bitfield,/* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_CR16_IMM20", /* name */
391 FALSE, /* partial_inplace */
392 0x0, /* src_mask */
393 0xfffff, /* dst_mask */
394 FALSE), /* pcrel_offset */
395
396 HOWTO (R_CR16_IMM24, /* type */
397 0, /* rightshift */
398 2, /* size */
399 24, /* bitsize */
400 FALSE, /* pc_relative */
401 0, /* bitpos */
402 complain_overflow_bitfield,/* complain_on_overflow */
403 bfd_elf_generic_reloc, /* special_function */
404 "R_CR16_IMM24", /* name */
405 FALSE, /* partial_inplace */
406 0x0, /* src_mask */
407 0xffffff, /* dst_mask */
408 FALSE), /* pcrel_offset */
409
410 HOWTO (R_CR16_IMM32, /* type */
411 0, /* rightshift */
412 2, /* size */
413 32, /* bitsize */
414 FALSE, /* pc_relative */
415 0, /* bitpos */
416 complain_overflow_bitfield,/* complain_on_overflow */
417 bfd_elf_generic_reloc, /* special_function */
418 "R_CR16_IMM32", /* name */
419 FALSE, /* partial_inplace */
420 0x0, /* src_mask */
421 0xffffffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
423
424 HOWTO (R_CR16_IMM32a, /* type */
425 1, /* rightshift */
426 2, /* size */
427 32, /* bitsize */
428 FALSE, /* pc_relative */
429 0, /* bitpos */
430 complain_overflow_bitfield,/* complain_on_overflow */
431 bfd_elf_generic_reloc, /* special_function */
432 "R_CR16_IMM32a", /* name */
433 FALSE, /* partial_inplace */
434 0x0, /* src_mask */
435 0xffffffff, /* dst_mask */
436 FALSE), /* pcrel_offset */
437
438 HOWTO (R_CR16_DISP4, /* type */
439 1, /* rightshift */
440 0, /* size (0 = byte, 1 = short, 2 = long) */
441 4, /* bitsize */
442 TRUE, /* pc_relative */
443 0, /* bitpos */
444 complain_overflow_unsigned, /* complain_on_overflow */
445 bfd_elf_generic_reloc, /* special_function */
446 "R_CR16_DISP4", /* name */
447 FALSE, /* partial_inplace */
448 0x0, /* src_mask */
449 0xf, /* dst_mask */
450 FALSE), /* pcrel_offset */
451
452 HOWTO (R_CR16_DISP8, /* type */
453 1, /* rightshift */
454 0, /* size (0 = byte, 1 = short, 2 = long) */
455 8, /* bitsize */
456 TRUE, /* pc_relative */
457 0, /* bitpos */
458 complain_overflow_unsigned, /* complain_on_overflow */
459 bfd_elf_generic_reloc, /* special_function */
460 "R_CR16_DISP8", /* name */
461 FALSE, /* partial_inplace */
462 0x0, /* src_mask */
463 0x1ff, /* dst_mask */
464 FALSE), /* pcrel_offset */
465
466 HOWTO (R_CR16_DISP16, /* type */
467 0, /* rightshift REVIITS: To sync with WinIDEA*/
468 1, /* size (0 = byte, 1 = short, 2 = long) */
469 16, /* bitsize */
470 TRUE, /* pc_relative */
471 0, /* bitpos */
472 complain_overflow_unsigned, /* complain_on_overflow */
473 bfd_elf_generic_reloc, /* special_function */
474 "R_CR16_DISP16", /* name */
475 FALSE, /* partial_inplace */
476 0x0, /* src_mask */
477 0x1ffff, /* dst_mask */
478 FALSE), /* pcrel_offset */
479 /* REVISIT: DISP24 should be left-shift by 2 as per ISA doc
480 but its not done, to sync with WinIDEA and CR16 4.1 tools */
481 HOWTO (R_CR16_DISP24, /* type */
482 0, /* rightshift */
483 2, /* size (0 = byte, 1 = short, 2 = long) */
484 24, /* bitsize */
485 TRUE, /* pc_relative */
486 0, /* bitpos */
487 complain_overflow_unsigned, /* complain_on_overflow */
488 bfd_elf_generic_reloc, /* special_function */
489 "R_CR16_DISP24", /* name */
490 FALSE, /* partial_inplace */
491 0x0, /* src_mask */
492 0x1ffffff, /* dst_mask */
493 FALSE), /* pcrel_offset */
494
495 HOWTO (R_CR16_DISP24a, /* type */
496 0, /* rightshift */
497 2, /* size (0 = byte, 1 = short, 2 = long) */
498 24, /* bitsize */
499 TRUE, /* pc_relative */
500 0, /* bitpos */
501 complain_overflow_unsigned, /* complain_on_overflow */
502 bfd_elf_generic_reloc, /* special_function */
503 "R_CR16_DISP24a", /* name */
504 FALSE, /* partial_inplace */
505 0x0, /* src_mask */
506 0xffffff, /* dst_mask */
507 FALSE), /* pcrel_offset */
508
509 /* An 8 bit switch table entry. This is generated for an expression
510 such as ``.byte L1 - L2''. The offset holds the difference
511 between the reloc address and L2. */
512 HOWTO (R_CR16_SWITCH8, /* type */
513 0, /* rightshift */
514 0, /* size (0 = byte, 1 = short, 2 = long) */
515 8, /* bitsize */
516 FALSE, /* pc_relative */
517 0, /* bitpos */
518 complain_overflow_unsigned, /* complain_on_overflow */
519 bfd_elf_generic_reloc, /* special_function */
520 "R_CR16_SWITCH8", /* name */
521 FALSE, /* partial_inplace */
522 0x0, /* src_mask */
523 0xff, /* dst_mask */
524 TRUE), /* pcrel_offset */
525
526 /* A 16 bit switch table entry. This is generated for an expression
527 such as ``.word L1 - L2''. The offset holds the difference
528 between the reloc address and L2. */
529 HOWTO (R_CR16_SWITCH16, /* type */
530 0, /* rightshift */
531 1, /* size (0 = byte, 1 = short, 2 = long) */
532 16, /* bitsize */
533 FALSE, /* pc_relative */
534 0, /* bitpos */
535 complain_overflow_unsigned, /* complain_on_overflow */
536 bfd_elf_generic_reloc, /* special_function */
537 "R_CR16_SWITCH16", /* name */
538 FALSE, /* partial_inplace */
539 0x0, /* src_mask */
540 0xffff, /* dst_mask */
541 TRUE), /* pcrel_offset */
542
543 /* A 32 bit switch table entry. This is generated for an expression
544 such as ``.long L1 - L2''. The offset holds the difference
545 between the reloc address and L2. */
546 HOWTO (R_CR16_SWITCH32, /* type */
547 0, /* rightshift */
548 2, /* size (0 = byte, 1 = short, 2 = long) */
549 32, /* bitsize */
550 FALSE, /* pc_relative */
551 0, /* bitpos */
552 complain_overflow_unsigned, /* complain_on_overflow */
553 bfd_elf_generic_reloc, /* special_function */
554 "R_CR16_SWITCH32", /* name */
555 FALSE, /* partial_inplace */
556 0x0, /* src_mask */
557 0xffffffff, /* dst_mask */
558 TRUE), /* pcrel_offset */
559
560 HOWTO (R_CR16_GOT_REGREL20, /* type */
561 0, /* rightshift */
562 2, /* size */
563 20, /* bitsize */
564 FALSE, /* pc_relative */
565 0, /* bitpos */
566 complain_overflow_bitfield,/* complain_on_overflow */
567 bfd_elf_generic_reloc, /* special_function */
568 "R_CR16_GOT_REGREL20", /* name */
569 TRUE, /* partial_inplace */
570 0x0, /* src_mask */
571 0xfffff, /* dst_mask */
572 FALSE), /* pcrel_offset */
573
574 HOWTO (R_CR16_GOTC_REGREL20, /* type */
575 0, /* rightshift */
576 2, /* size */
577 20, /* bitsize */
578 FALSE, /* pc_relative */
579 0, /* bitpos */
580 complain_overflow_bitfield,/* complain_on_overflow */
581 bfd_elf_generic_reloc, /* special_function */
582 "R_CR16_GOTC_REGREL20", /* name */
583 TRUE, /* partial_inplace */
584 0x0, /* src_mask */
585 0xfffff, /* dst_mask */
586 FALSE), /* pcrel_offset */
587
588 HOWTO (R_CR16_GLOB_DAT, /* type */
589 0, /* rightshift */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
591 32, /* bitsize */
592 FALSE, /* pc_relative */
593 0, /* bitpos */
594 complain_overflow_unsigned, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_CR16_GLOB_DAT", /* name */
597 FALSE, /* partial_inplace */
598 0x0, /* src_mask */
599 0xffffffff, /* dst_mask */
600 TRUE) /* pcrel_offset */
601 };
602
603
604 /* Create the GOT section. */
605
606 static bfd_boolean
607 _bfd_cr16_elf_create_got_section (bfd * abfd, struct bfd_link_info * info)
608 {
609 flagword flags;
610 asection * s;
611 struct elf_link_hash_entry * h;
612 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
613 int ptralign;
614
615 /* This function may be called more than once. */
616 if (bfd_get_section_by_name (abfd, ".got") != NULL)
617 return TRUE;
618
619 switch (bed->s->arch_size)
620 {
621 case 16:
622 ptralign = 1;
623 break;
624
625 case 32:
626 ptralign = 2;
627 break;
628
629 default:
630 bfd_set_error (bfd_error_bad_value);
631 return FALSE;
632 }
633
634 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
635 | SEC_LINKER_CREATED);
636
637 s = bfd_make_section_with_flags (abfd, ".got", flags);
638 if (s == NULL
639 || ! bfd_set_section_alignment (abfd, s, ptralign))
640 return FALSE;
641
642 if (bed->want_got_plt)
643 {
644 s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
645 if (s == NULL
646 || ! bfd_set_section_alignment (abfd, s, ptralign))
647 return FALSE;
648 }
649
650 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
651 (or .got.plt) section. We don't do this in the linker script
652 because we don't want to define the symbol if we are not creating
653 a global offset table. */
654 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_");
655 elf_hash_table (info)->hgot = h;
656 if (h == NULL)
657 return FALSE;
658
659 /* The first bit of the global offset table is the header. */
660 s->size += bed->got_header_size;
661
662 return TRUE;
663 }
664
665
666 /* Retrieve a howto ptr using a BFD reloc_code. */
667
668 static reloc_howto_type *
669 elf_cr16_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
670 bfd_reloc_code_real_type code)
671 {
672 unsigned int i;
673
674 for (i = 0; i < R_CR16_MAX; i++)
675 if (code == cr16_reloc_map[i].bfd_reloc_enum)
676 return &cr16_elf_howto_table[cr16_reloc_map[i].cr16_reloc_type];
677
678 _bfd_error_handler ("Unsupported CR16 relocation type: 0x%x\n", code);
679 return NULL;
680 }
681
682 static reloc_howto_type *
683 elf_cr16_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
684 const char *r_name)
685 {
686 unsigned int i;
687
688 for (i = 0; ARRAY_SIZE (cr16_elf_howto_table); i++)
689 if (cr16_elf_howto_table[i].name != NULL
690 && strcasecmp (cr16_elf_howto_table[i].name, r_name) == 0)
691 return cr16_elf_howto_table + i;
692
693 return NULL;
694 }
695
696 /* Retrieve a howto ptr using an internal relocation entry. */
697
698 static void
699 elf_cr16_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
700 Elf_Internal_Rela *dst)
701 {
702 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
703
704 BFD_ASSERT (r_type < (unsigned int) R_CR16_MAX);
705 cache_ptr->howto = cr16_elf_howto_table + r_type;
706 }
707
708 /* Look through the relocs for a section during the first phase.
709 Since we don't do .gots or .plts, we just need to consider the
710 virtual table relocs for gc. */
711
712 static bfd_boolean
713 cr16_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
714 const Elf_Internal_Rela *relocs)
715 {
716 Elf_Internal_Shdr *symtab_hdr;
717 Elf_Internal_Sym * isymbuf = NULL;
718 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
719 const Elf_Internal_Rela *rel;
720 const Elf_Internal_Rela *rel_end;
721 bfd * dynobj;
722 bfd_vma * local_got_offsets;
723 asection * sgot;
724 asection * srelgot;
725
726 sgot = NULL;
727 srelgot = NULL;
728 bfd_boolean result = FALSE;
729
730 if (info->relocatable)
731 return TRUE;
732
733 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
734 sym_hashes = elf_sym_hashes (abfd);
735 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
736 if (!elf_bad_symtab (abfd))
737 sym_hashes_end -= symtab_hdr->sh_info;
738
739 dynobj = elf_hash_table (info)->dynobj;
740 local_got_offsets = elf_local_got_offsets (abfd);
741 rel_end = relocs + sec->reloc_count;
742 for (rel = relocs; rel < rel_end; rel++)
743 {
744 struct elf_link_hash_entry *h;
745 unsigned long r_symndx;
746
747 r_symndx = ELF32_R_SYM (rel->r_info);
748 if (r_symndx < symtab_hdr->sh_info)
749 h = NULL;
750 else
751 {
752 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
753 while (h->root.type == bfd_link_hash_indirect
754 || h->root.type == bfd_link_hash_warning)
755 h = (struct elf_link_hash_entry *) h->root.u.i.link;
756 }
757
758 /* Some relocs require a global offset table. */
759 if (dynobj == NULL)
760 {
761 switch (ELF32_R_TYPE (rel->r_info))
762 {
763 case R_CR16_GOT_REGREL20:
764 case R_CR16_GOTC_REGREL20:
765 elf_hash_table (info)->dynobj = dynobj = abfd;
766 if (! _bfd_cr16_elf_create_got_section (dynobj, info))
767 goto fail;
768 break;
769
770 default:
771 break;
772 }
773 }
774
775 switch (ELF32_R_TYPE (rel->r_info))
776 {
777 case R_CR16_GOT_REGREL20:
778 case R_CR16_GOTC_REGREL20:
779 /* This symbol requires a global offset table entry. */
780
781 if (sgot == NULL)
782 {
783 sgot = bfd_get_section_by_name (dynobj, ".got");
784 BFD_ASSERT (sgot != NULL);
785 }
786
787 if (srelgot == NULL
788 && (h != NULL || info->executable))
789 {
790 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
791 if (srelgot == NULL)
792 {
793 srelgot = bfd_make_section_with_flags (dynobj,
794 ".rela.got",
795 (SEC_ALLOC
796 | SEC_LOAD
797 | SEC_HAS_CONTENTS
798 | SEC_IN_MEMORY
799 | SEC_LINKER_CREATED
800 | SEC_READONLY));
801 if (srelgot == NULL
802 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
803 goto fail;
804 }
805 }
806
807 if (h != NULL)
808 {
809 if (h->got.offset != (bfd_vma) -1)
810 /* We have already allocated space in the .got. */
811 break;
812
813 h->got.offset = sgot->size;
814
815 /* Make sure this symbol is output as a dynamic symbol. */
816 if (h->dynindx == -1)
817 {
818 if (! bfd_elf_link_record_dynamic_symbol (info, h))
819 goto fail;
820 }
821
822 srelgot->size += sizeof (Elf32_External_Rela);
823 }
824 else
825 {
826 /* This is a global offset table entry for a local
827 symbol. */
828 if (local_got_offsets == NULL)
829 {
830 size_t size;
831 unsigned int i;
832
833 size = symtab_hdr->sh_info * sizeof (bfd_vma);
834 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
835
836 if (local_got_offsets == NULL)
837 goto fail;
838
839 elf_local_got_offsets (abfd) = local_got_offsets;
840
841 for (i = 0; i < symtab_hdr->sh_info; i++)
842 local_got_offsets[i] = (bfd_vma) -1;
843 }
844
845 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
846 /* We have already allocated space in the .got. */
847 break;
848
849 local_got_offsets[r_symndx] = sgot->size;
850
851 if (info->executable)
852 /* If we are generating a shared object, we need to
853 output a R_CR16_RELATIVE reloc so that the dynamic
854 linker can adjust this GOT entry. */
855 srelgot->size += sizeof (Elf32_External_Rela);
856 }
857
858 sgot->size += 4;
859 break;
860
861 }
862 }
863
864 result = TRUE;
865 fail:
866 if (isymbuf != NULL)
867 free (isymbuf);
868
869 return result;
870 }
871
872 /* Perform a relocation as part of a final link. */
873
874 static bfd_reloc_status_type
875 cr16_elf_final_link_relocate (reloc_howto_type *howto,
876 bfd *input_bfd,
877 bfd *output_bfd ATTRIBUTE_UNUSED,
878 asection *input_section,
879 bfd_byte *contents,
880 bfd_vma offset,
881 bfd_vma Rvalue,
882 bfd_vma addend,
883 struct elf_link_hash_entry * h,
884 unsigned long symndx ATTRIBUTE_UNUSED,
885 struct bfd_link_info *info ATTRIBUTE_UNUSED,
886 asection *sec ATTRIBUTE_UNUSED,
887 int is_local ATTRIBUTE_UNUSED)
888 {
889 unsigned short r_type = howto->type;
890 bfd_byte *hit_data = contents + offset;
891 bfd_vma reloc_bits, check, Rvalue1;
892
893 bfd * dynobj;
894 bfd_vma * local_got_offsets;
895 asection * sgot;
896
897 dynobj = elf_hash_table (info)->dynobj;
898 local_got_offsets = elf_local_got_offsets (input_bfd);
899
900 sgot = NULL;
901
902
903 switch (r_type)
904 {
905 case R_CR16_IMM4:
906 case R_CR16_IMM20:
907 case R_CR16_ABS20:
908 break;
909
910 case R_CR16_IMM8:
911 case R_CR16_IMM16:
912 case R_CR16_IMM32:
913 case R_CR16_IMM32a:
914 case R_CR16_REGREL4:
915 case R_CR16_REGREL4a:
916 case R_CR16_REGREL14:
917 case R_CR16_REGREL14a:
918 case R_CR16_REGREL16:
919 case R_CR16_REGREL20:
920 case R_CR16_REGREL20a:
921 case R_CR16_GOT_REGREL20:
922 case R_CR16_GOTC_REGREL20:
923 case R_CR16_ABS24:
924 case R_CR16_DISP16:
925 case R_CR16_DISP24:
926 /* 'hit_data' is relative to the start of the instruction, not the
927 relocation offset. Advance it to account for the exact offset. */
928 hit_data += 2;
929 break;
930
931 case R_CR16_NONE:
932 return bfd_reloc_ok;
933 break;
934
935 case R_CR16_DISP4:
936 if (is_local)
937 Rvalue += -1;
938 break;
939
940 case R_CR16_DISP8:
941 case R_CR16_DISP24a:
942 if (is_local)
943 Rvalue -= -1;
944 break;
945
946 case R_CR16_SWITCH8:
947 case R_CR16_SWITCH16:
948 case R_CR16_SWITCH32:
949 /* We only care about the addend, where the difference between
950 expressions is kept. */
951 Rvalue = 0;
952
953 default:
954 break;
955 }
956
957 if (howto->pc_relative)
958 {
959 /* Subtract the address of the section containing the location. */
960 Rvalue -= (input_section->output_section->vma
961 + input_section->output_offset);
962 /* Subtract the position of the location within the section. */
963 Rvalue -= offset;
964 }
965
966 /* Add in supplied addend. */
967 Rvalue += addend;
968
969 /* Complain if the bitfield overflows, whether it is considered
970 as signed or unsigned. */
971 check = Rvalue >> howto->rightshift;
972
973 /* Assumes two's complement. This expression avoids
974 overflow if howto->bitsize is the number of bits in
975 bfd_vma. */
976 reloc_bits = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1;
977
978 /* For GOT and GOTC relocs no boundary checks applied. */
979 if (!((r_type == R_CR16_GOT_REGREL20)
980 || (r_type == R_CR16_GOTC_REGREL20)))
981 {
982 if (((bfd_vma) check & ~reloc_bits) != 0
983 && (((bfd_vma) check & ~reloc_bits)
984 != (-(bfd_vma) 1 & ~reloc_bits)))
985 {
986 /* The above right shift is incorrect for a signed
987 value. See if turning on the upper bits fixes the
988 overflow. */
989 if (howto->rightshift && (bfd_signed_vma) Rvalue < 0)
990 {
991 check |= ((bfd_vma) - 1
992 & ~((bfd_vma) - 1
993 >> howto->rightshift));
994
995 if (((bfd_vma) check & ~reloc_bits)
996 != (-(bfd_vma) 1 & ~reloc_bits))
997 return bfd_reloc_overflow;
998 }
999 else
1000 return bfd_reloc_overflow;
1001 }
1002
1003 /* Drop unwanted bits from the value we are relocating to. */
1004 Rvalue >>= (bfd_vma) howto->rightshift;
1005
1006 /* Apply dst_mask to select only relocatable part of the insn. */
1007 Rvalue &= howto->dst_mask;
1008 }
1009
1010 switch (howto->size)
1011 {
1012 case 0:
1013 if (r_type == R_CR16_DISP8)
1014 {
1015 Rvalue1 = bfd_get_16 (input_bfd, hit_data);
1016 Rvalue = ((Rvalue1 & 0xf000) | ((Rvalue << 4) & 0xf00)
1017 | (Rvalue1 & 0x00f0) | (Rvalue & 0xf));
1018 bfd_put_16 (input_bfd, Rvalue, hit_data);
1019 }
1020 else if (r_type == R_CR16_IMM4)
1021 {
1022 Rvalue1 = bfd_get_16 (input_bfd, hit_data);
1023 Rvalue = (((Rvalue1 & 0xff) << 8) | ((Rvalue << 4) & 0xf0)
1024 | ((Rvalue1 & 0x0f00) >> 8));
1025 bfd_put_16 (input_bfd, Rvalue, hit_data);
1026 }
1027 else if (r_type == R_CR16_DISP4)
1028 {
1029 Rvalue1 = bfd_get_16 (input_bfd, hit_data);
1030 Rvalue = (Rvalue1 | ((Rvalue & 0xf) << 4));
1031 bfd_put_16 (input_bfd, Rvalue, hit_data);
1032 }
1033 else
1034 {
1035 bfd_put_8 (input_bfd, (unsigned char) Rvalue, hit_data);
1036 }
1037 break;
1038
1039 case 1:
1040 if (r_type == R_CR16_DISP16)
1041 {
1042 Rvalue |= (bfd_get_16 (input_bfd, hit_data));
1043 Rvalue = ((Rvalue & 0xfffe) | ((Rvalue >> 16) & 0x1));
1044 }
1045 if (r_type == R_CR16_IMM16)
1046 {
1047 Rvalue1 = bfd_get_16 (input_bfd, hit_data);
1048
1049 /* Add or subtract the offset value. */
1050 if (Rvalue1 & 0x8000)
1051 Rvalue -= (~Rvalue1 + 1) & 0xffff;
1052 else
1053 Rvalue += Rvalue1;
1054
1055 /* Check for range. */
1056 if ((long) Rvalue > 0xffff || (long) Rvalue < 0x0)
1057 return bfd_reloc_overflow;
1058 }
1059
1060 bfd_put_16 (input_bfd, Rvalue, hit_data);
1061 break;
1062
1063 case 2:
1064 if ((r_type == R_CR16_ABS20) || (r_type == R_CR16_IMM20))
1065 {
1066 Rvalue1 = (bfd_get_16 (input_bfd, hit_data + 2)
1067 | (((bfd_get_16 (input_bfd, hit_data) & 0xf) <<16)));
1068
1069 /* Add or subtract the offset value. */
1070 if (Rvalue1 & 0x80000)
1071 Rvalue -= (~Rvalue1 + 1) & 0xfffff;
1072 else
1073 Rvalue += Rvalue1;
1074
1075 /* Check for range. */
1076 if ((long) Rvalue > 0xfffff || (long) Rvalue < 0x0)
1077 return bfd_reloc_overflow;
1078
1079 bfd_put_16 (input_bfd, ((bfd_get_16 (input_bfd, hit_data) & 0xfff0)
1080 | ((Rvalue >> 16) & 0xf)), hit_data);
1081 bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2);
1082 }
1083 else if (r_type == R_CR16_GOT_REGREL20)
1084 {
1085 asection * sgot = bfd_get_section_by_name (dynobj, ".got");
1086
1087 if (h != NULL)
1088 {
1089 bfd_vma off;
1090
1091 off = h->got.offset;
1092 BFD_ASSERT (off != (bfd_vma) -1);
1093
1094 if (! elf_hash_table (info)->dynamic_sections_created
1095 || SYMBOL_REFERENCES_LOCAL (info, h))
1096 /* This is actually a static link, or it is a
1097 -Bsymbolic link and the symbol is defined
1098 locally, or the symbol was forced to be local
1099 because of a version file. We must initialize
1100 this entry in the global offset table.
1101 When doing a dynamic link, we create a .rela.got
1102 relocation entry to initialize the value. This
1103 is done in the finish_dynamic_symbol routine. */
1104 bfd_put_32 (output_bfd, Rvalue, sgot->contents + off);
1105
1106 Rvalue = sgot->output_offset + off;
1107 }
1108 else
1109 {
1110 bfd_vma off;
1111
1112 off = elf_local_got_offsets (input_bfd)[symndx];
1113 bfd_put_32 (output_bfd,Rvalue, sgot->contents + off);
1114
1115 Rvalue = sgot->output_offset + off;
1116 }
1117
1118 Rvalue += addend;
1119
1120 /* REVISIT: if ((long) Rvalue > 0xffffff ||
1121 (long) Rvalue < -0x800000). */
1122 if ((long) Rvalue > 0xffffff || (long) Rvalue < 0)
1123 return bfd_reloc_overflow;
1124
1125
1126 bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data))
1127 | (((Rvalue >> 16) & 0xf) << 8), hit_data);
1128 bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2);
1129
1130 }
1131 else if (r_type == R_CR16_GOTC_REGREL20)
1132 {
1133 asection * sgot;
1134 sgot = bfd_get_section_by_name (dynobj, ".got");
1135
1136 if (h != NULL)
1137 {
1138 bfd_vma off;
1139
1140 off = h->got.offset;
1141 BFD_ASSERT (off != (bfd_vma) -1);
1142
1143 Rvalue >>=1; /* For code symbols. */
1144
1145 if (! elf_hash_table (info)->dynamic_sections_created
1146 || SYMBOL_REFERENCES_LOCAL (info, h))
1147 /* This is actually a static link, or it is a
1148 -Bsymbolic link and the symbol is defined
1149 locally, or the symbol was forced to be local
1150 because of a version file. We must initialize
1151 this entry in the global offset table.
1152 When doing a dynamic link, we create a .rela.got
1153 relocation entry to initialize the value. This
1154 is done in the finish_dynamic_symbol routine. */
1155 bfd_put_32 (output_bfd, Rvalue, sgot->contents + off);
1156
1157 Rvalue = sgot->output_offset + off;
1158 }
1159 else
1160 {
1161 bfd_vma off;
1162
1163 off = elf_local_got_offsets (input_bfd)[symndx];
1164 Rvalue >>= 1;
1165 bfd_put_32 (output_bfd,Rvalue, sgot->contents + off);
1166 Rvalue = sgot->output_offset + off;
1167 }
1168
1169 Rvalue += addend;
1170
1171 /* Check if any value in DISP. */
1172 Rvalue1 =((bfd_get_32 (input_bfd, hit_data) >>16)
1173 | (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16));
1174
1175 /* Add or subtract the offset value. */
1176 if (Rvalue1 & 0x80000)
1177 Rvalue -= (~Rvalue1 + 1) & 0xfffff;
1178 else
1179 Rvalue += Rvalue1;
1180
1181 /* Check for range. */
1182 /* REVISIT: if ((long) Rvalue > 0xffffff
1183 || (long) Rvalue < -0x800000). */
1184 if ((long) Rvalue > 0xffffff || (long) Rvalue < 0)
1185 return bfd_reloc_overflow;
1186
1187 bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data))
1188 | (((Rvalue >> 16) & 0xf) << 8), hit_data);
1189 bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2);
1190 }
1191 else
1192 {
1193 if (r_type == R_CR16_ABS24)
1194 {
1195 Rvalue1 = ((bfd_get_32 (input_bfd, hit_data) >> 16)
1196 | (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16)
1197 | (((bfd_get_32 (input_bfd, hit_data) & 0xf) <<20)));
1198
1199 /* Add or subtract the offset value. */
1200 if (Rvalue1 & 0x800000)
1201 Rvalue -= (~Rvalue1 + 1) & 0xffffff;
1202 else
1203 Rvalue += Rvalue1;
1204
1205 /* Check for Range. */
1206 if ((long) Rvalue > 0xffffff || (long) Rvalue < 0x0)
1207 return bfd_reloc_overflow;
1208
1209 Rvalue = ((((Rvalue >> 20) & 0xf) | (((Rvalue >> 16) & 0xf)<<8)
1210 | (bfd_get_32 (input_bfd, hit_data) & 0xf0f0))
1211 | ((Rvalue & 0xffff) << 16));
1212 }
1213 else if (r_type == R_CR16_DISP24)
1214 {
1215 Rvalue = ((((Rvalue >> 20)& 0xf) | (((Rvalue >>16) & 0xf)<<8)
1216 | (bfd_get_16 (input_bfd, hit_data)))
1217 | (((Rvalue & 0xfffe) | ((Rvalue >> 24) & 0x1)) << 16));
1218 }
1219 else if ((r_type == R_CR16_IMM32) || (r_type == R_CR16_IMM32a))
1220 {
1221 Rvalue1 =((((bfd_get_32 (input_bfd, hit_data)) >> 16) &0xffff)
1222 | (((bfd_get_32 (input_bfd, hit_data)) &0xffff)) << 16);
1223
1224 /* Add or subtract the offset value. */
1225 if (Rvalue1 & 0x80000000)
1226 Rvalue -= (~Rvalue1 + 1) & 0xffffffff;
1227 else
1228 Rvalue += Rvalue1;
1229
1230 /* Check for range. */
1231 if (Rvalue > 0xffffffff || (long) Rvalue < 0x0)
1232 return bfd_reloc_overflow;
1233
1234 Rvalue = (((Rvalue >> 16)& 0xffff) | (Rvalue & 0xffff) << 16);
1235 }
1236 else if (r_type == R_CR16_DISP24a)
1237 {
1238 Rvalue = (((Rvalue & 0xfffffe) | (Rvalue >> 23)));
1239 Rvalue = ((Rvalue >> 16) & 0xff) | ((Rvalue & 0xffff) << 16)
1240 | (bfd_get_32 (input_bfd, hit_data));
1241 }
1242 else if ((r_type == R_CR16_REGREL20)
1243 || (r_type == R_CR16_REGREL20a))
1244 {
1245 Rvalue1 = ((bfd_get_32 (input_bfd, hit_data) >> 16)
1246 | (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16));
1247 /* Add or subtract the offset value. */
1248 if (Rvalue1 & 0x80000)
1249 Rvalue -= (~Rvalue1 + 1) & 0xfffff;
1250 else
1251 Rvalue += Rvalue1;
1252
1253 /* Check for range. */
1254 if ((long) Rvalue > 0xfffff || (long) Rvalue < 0x0)
1255 return bfd_reloc_overflow;
1256
1257 Rvalue = (((((Rvalue >> 20)& 0xf) | (((Rvalue >>16) & 0xf)<<8)
1258 | ((Rvalue & 0xffff) << 16)))
1259 | (bfd_get_32 (input_bfd, hit_data) & 0xf0ff));
1260
1261 }
1262 else if (r_type == R_CR16_NUM32)
1263 {
1264 Rvalue1 = (bfd_get_32 (input_bfd, hit_data));
1265
1266 /* Add or subtract the offset value */
1267 if (Rvalue1 & 0x80000000)
1268 Rvalue -= (~Rvalue1 + 1) & 0xffffffff;
1269 else
1270 Rvalue += Rvalue1;
1271
1272 /* Check for Ranga */
1273 if (Rvalue > 0xffffffff)
1274 return bfd_reloc_overflow;
1275 }
1276
1277 bfd_put_32 (input_bfd, Rvalue, hit_data);
1278 }
1279 break;
1280
1281 default:
1282 return bfd_reloc_notsupported;
1283 }
1284
1285 return bfd_reloc_ok;
1286 }
1287
1288 /* Delete some bytes from a section while relaxing. */
1289
1290 static bfd_boolean
1291 elf32_cr16_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd,
1292 asection *sec, bfd_vma addr, int count)
1293 {
1294 Elf_Internal_Shdr *symtab_hdr;
1295 unsigned int sec_shndx;
1296 bfd_byte *contents;
1297 Elf_Internal_Rela *irel, *irelend;
1298 Elf_Internal_Rela *irelalign;
1299 bfd_vma toaddr;
1300 Elf_Internal_Sym *isym;
1301 Elf_Internal_Sym *isymend;
1302 struct elf_link_hash_entry **sym_hashes;
1303 struct elf_link_hash_entry **end_hashes;
1304 struct elf_link_hash_entry **start_hashes;
1305 unsigned int symcount;
1306
1307 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1308
1309 contents = elf_section_data (sec)->this_hdr.contents;
1310
1311 /* The deletion must stop at the next ALIGN reloc for an aligment
1312 power larger than the number of bytes we are deleting. */
1313 irelalign = NULL;
1314 toaddr = sec->size;
1315
1316 irel = elf_section_data (sec)->relocs;
1317 irelend = irel + sec->reloc_count;
1318
1319 /* Actually delete the bytes. */
1320 memmove (contents + addr, contents + addr + count,
1321 (size_t) (toaddr - addr - count));
1322 sec->size -= count;
1323
1324 /* Adjust all the relocs. */
1325 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
1326 /* Get the new reloc address. */
1327 if ((irel->r_offset > addr && irel->r_offset < toaddr))
1328 irel->r_offset -= count;
1329
1330 /* Adjust the local symbols defined in this section. */
1331 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1332 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
1333 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
1334 {
1335 if (isym->st_shndx == sec_shndx
1336 && isym->st_value > addr
1337 && isym->st_value < toaddr)
1338 {
1339 /* Adjust the addend of SWITCH relocations in this section,
1340 which reference this local symbol. */
1341 #if 0
1342 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
1343 {
1344 unsigned long r_symndx;
1345 Elf_Internal_Sym *rsym;
1346 bfd_vma addsym, subsym;
1347
1348 /* Skip if not a SWITCH relocation. */
1349 if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH8
1350 && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH16
1351 && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH32)
1352 continue;
1353
1354 r_symndx = ELF32_R_SYM (irel->r_info);
1355 rsym = (Elf_Internal_Sym *) symtab_hdr->contents + r_symndx;
1356
1357 /* Skip if not the local adjusted symbol. */
1358 if (rsym != isym)
1359 continue;
1360
1361 addsym = isym->st_value;
1362 subsym = addsym - irel->r_addend;
1363
1364 /* Fix the addend only when -->> (addsym > addr >= subsym). */
1365 if (subsym <= addr)
1366 irel->r_addend -= count;
1367 else
1368 continue;
1369 }
1370 #endif
1371
1372 isym->st_value -= count;
1373 }
1374 }
1375
1376 /* Now adjust the global symbols defined in this section. */
1377 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1378 - symtab_hdr->sh_info);
1379 sym_hashes = start_hashes = elf_sym_hashes (abfd);
1380 end_hashes = sym_hashes + symcount;
1381
1382 for (; sym_hashes < end_hashes; sym_hashes++)
1383 {
1384 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1385
1386 /* The '--wrap SYMBOL' option is causing a pain when the object file,
1387 containing the definition of __wrap_SYMBOL, includes a direct
1388 call to SYMBOL as well. Since both __wrap_SYMBOL and SYMBOL reference
1389 the same symbol (which is __wrap_SYMBOL), but still exist as two
1390 different symbols in 'sym_hashes', we don't want to adjust
1391 the global symbol __wrap_SYMBOL twice.
1392 This check is only relevant when symbols are being wrapped. */
1393 if (link_info->wrap_hash != NULL)
1394 {
1395 struct elf_link_hash_entry **cur_sym_hashes;
1396
1397 /* Loop only over the symbols whom been already checked. */
1398 for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes;
1399 cur_sym_hashes++)
1400 /* If the current symbol is identical to 'sym_hash', that means
1401 the symbol was already adjusted (or at least checked). */
1402 if (*cur_sym_hashes == sym_hash)
1403 break;
1404
1405 /* Don't adjust the symbol again. */
1406 if (cur_sym_hashes < sym_hashes)
1407 continue;
1408 }
1409
1410 if ((sym_hash->root.type == bfd_link_hash_defined
1411 || sym_hash->root.type == bfd_link_hash_defweak)
1412 && sym_hash->root.u.def.section == sec
1413 && sym_hash->root.u.def.value > addr
1414 && sym_hash->root.u.def.value < toaddr)
1415 sym_hash->root.u.def.value -= count;
1416 }
1417
1418 return TRUE;
1419 }
1420
1421 /* Relocate a CR16 ELF section. */
1422
1423 static bfd_boolean
1424 elf32_cr16_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
1425 bfd *input_bfd, asection *input_section,
1426 bfd_byte *contents, Elf_Internal_Rela *relocs,
1427 Elf_Internal_Sym *local_syms,
1428 asection **local_sections)
1429 {
1430 Elf_Internal_Shdr *symtab_hdr;
1431 struct elf_link_hash_entry **sym_hashes;
1432 Elf_Internal_Rela *rel, *relend;
1433
1434 if (info->relocatable)
1435 return TRUE;
1436
1437 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1438 sym_hashes = elf_sym_hashes (input_bfd);
1439
1440 rel = relocs;
1441 relend = relocs + input_section->reloc_count;
1442 for (; rel < relend; rel++)
1443 {
1444 int r_type;
1445 reloc_howto_type *howto;
1446 unsigned long r_symndx;
1447 Elf_Internal_Sym *sym;
1448 asection *sec;
1449 struct elf_link_hash_entry *h;
1450 bfd_vma relocation;
1451 bfd_reloc_status_type r;
1452
1453 r_symndx = ELF32_R_SYM (rel->r_info);
1454 r_type = ELF32_R_TYPE (rel->r_info);
1455 howto = cr16_elf_howto_table + (r_type);
1456
1457 h = NULL;
1458 sym = NULL;
1459 sec = NULL;
1460 if (r_symndx < symtab_hdr->sh_info)
1461 {
1462 sym = local_syms + r_symndx;
1463 sec = local_sections[r_symndx];
1464 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1465 }
1466 else
1467 {
1468 bfd_boolean unresolved_reloc, warned;
1469
1470 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1471 r_symndx, symtab_hdr, sym_hashes,
1472 h, sec, relocation,
1473 unresolved_reloc, warned);
1474 }
1475
1476 r = cr16_elf_final_link_relocate (howto, input_bfd, output_bfd,
1477 input_section,
1478 contents, rel->r_offset,
1479 relocation, rel->r_addend,
1480 (struct elf_link_hash_entry *) h,
1481 r_symndx,
1482 info, sec, h == NULL);
1483
1484 if (r != bfd_reloc_ok)
1485 {
1486 const char *name;
1487 const char *msg = NULL;
1488
1489 if (h != NULL)
1490 name = h->root.root.string;
1491 else
1492 {
1493 name = (bfd_elf_string_from_elf_section
1494 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1495 if (name == NULL || *name == '\0')
1496 name = bfd_section_name (input_bfd, sec);
1497 }
1498
1499 switch (r)
1500 {
1501 case bfd_reloc_overflow:
1502 if (!((*info->callbacks->reloc_overflow)
1503 (info, (h ? &h->root : NULL), name, howto->name,
1504 (bfd_vma) 0, input_bfd, input_section,
1505 rel->r_offset)))
1506 return FALSE;
1507 break;
1508
1509 case bfd_reloc_undefined:
1510 if (!((*info->callbacks->undefined_symbol)
1511 (info, name, input_bfd, input_section,
1512 rel->r_offset, TRUE)))
1513 return FALSE;
1514 break;
1515
1516 case bfd_reloc_outofrange:
1517 msg = _("internal error: out of range error");
1518 goto common_error;
1519
1520 case bfd_reloc_notsupported:
1521 msg = _("internal error: unsupported relocation error");
1522 goto common_error;
1523
1524 case bfd_reloc_dangerous:
1525 msg = _("internal error: dangerous error");
1526 goto common_error;
1527
1528 default:
1529 msg = _("internal error: unknown error");
1530 /* Fall through. */
1531
1532 common_error:
1533 if (!((*info->callbacks->warning)
1534 (info, msg, name, input_bfd, input_section,
1535 rel->r_offset)))
1536 return FALSE;
1537 break;
1538 }
1539 }
1540 }
1541
1542 return TRUE;
1543 }
1544
1545 /* This is a version of bfd_generic_get_relocated_section_contents
1546 which uses elf32_cr16_relocate_section. */
1547
1548 static bfd_byte *
1549 elf32_cr16_get_relocated_section_contents (bfd *output_bfd,
1550 struct bfd_link_info *link_info,
1551 struct bfd_link_order *link_order,
1552 bfd_byte *data,
1553 bfd_boolean relocatable,
1554 asymbol **symbols)
1555 {
1556 Elf_Internal_Shdr *symtab_hdr;
1557 asection *input_section = link_order->u.indirect.section;
1558 bfd *input_bfd = input_section->owner;
1559 asection **sections = NULL;
1560 Elf_Internal_Rela *internal_relocs = NULL;
1561 Elf_Internal_Sym *isymbuf = NULL;
1562
1563 /* We only need to handle the case of relaxing, or of having a
1564 particular set of section contents, specially. */
1565 if (relocatable
1566 || elf_section_data (input_section)->this_hdr.contents == NULL)
1567 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
1568 link_order, data,
1569 relocatable,
1570 symbols);
1571
1572 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1573
1574 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
1575 (size_t) input_section->size);
1576
1577 if ((input_section->flags & SEC_RELOC) != 0
1578 && input_section->reloc_count > 0)
1579 {
1580 Elf_Internal_Sym *isym;
1581 Elf_Internal_Sym *isymend;
1582 asection **secpp;
1583 bfd_size_type amt;
1584
1585 internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section,
1586 NULL, NULL, FALSE);
1587 if (internal_relocs == NULL)
1588 goto error_return;
1589
1590 if (symtab_hdr->sh_info != 0)
1591 {
1592 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1593 if (isymbuf == NULL)
1594 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1595 symtab_hdr->sh_info, 0,
1596 NULL, NULL, NULL);
1597 if (isymbuf == NULL)
1598 goto error_return;
1599 }
1600
1601 amt = symtab_hdr->sh_info;
1602 amt *= sizeof (asection *);
1603 sections = bfd_malloc (amt);
1604 if (sections == NULL && amt != 0)
1605 goto error_return;
1606
1607 isymend = isymbuf + symtab_hdr->sh_info;
1608 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
1609 {
1610 asection *isec;
1611
1612 if (isym->st_shndx == SHN_UNDEF)
1613 isec = bfd_und_section_ptr;
1614 else if (isym->st_shndx == SHN_ABS)
1615 isec = bfd_abs_section_ptr;
1616 else if (isym->st_shndx == SHN_COMMON)
1617 isec = bfd_com_section_ptr;
1618 else
1619 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
1620
1621 *secpp = isec;
1622 }
1623
1624 if (! elf32_cr16_relocate_section (output_bfd, link_info, input_bfd,
1625 input_section, data, internal_relocs,
1626 isymbuf, sections))
1627 goto error_return;
1628
1629 if (sections != NULL)
1630 free (sections);
1631 if (isymbuf != NULL
1632 && symtab_hdr->contents != (unsigned char *) isymbuf)
1633 free (isymbuf);
1634 if (elf_section_data (input_section)->relocs != internal_relocs)
1635 free (internal_relocs);
1636 }
1637
1638 return data;
1639
1640 error_return:
1641 if (sections != NULL)
1642 free (sections);
1643 if (isymbuf != NULL
1644 && symtab_hdr->contents != (unsigned char *) isymbuf)
1645 free (isymbuf);
1646 if (internal_relocs != NULL
1647 && elf_section_data (input_section)->relocs != internal_relocs)
1648 free (internal_relocs);
1649 return NULL;
1650 }
1651
1652 /* Assorted hash table functions. */
1653
1654 /* Initialize an entry in the link hash table. */
1655
1656 /* Create an entry in an CR16 ELF linker hash table. */
1657
1658 static struct bfd_hash_entry *
1659 elf32_cr16_link_hash_newfunc (struct bfd_hash_entry *entry,
1660 struct bfd_hash_table *table,
1661 const char *string)
1662 {
1663 struct elf32_cr16_link_hash_entry *ret =
1664 (struct elf32_cr16_link_hash_entry *) entry;
1665
1666 /* Allocate the structure if it has not already been allocated by a
1667 subclass. */
1668 if (ret == (struct elf32_cr16_link_hash_entry *) NULL)
1669 ret = ((struct elf32_cr16_link_hash_entry *)
1670 bfd_hash_allocate (table,
1671 sizeof (struct elf32_cr16_link_hash_entry)));
1672 if (ret == (struct elf32_cr16_link_hash_entry *) NULL)
1673 return (struct bfd_hash_entry *) ret;
1674
1675 /* Call the allocation method of the superclass. */
1676 ret = ((struct elf32_cr16_link_hash_entry *)
1677 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1678 table, string));
1679 if (ret != (struct elf32_cr16_link_hash_entry *) NULL)
1680 {
1681 ret->direct_calls = 0;
1682 ret->stack_size = 0;
1683 ret->movm_args = 0;
1684 ret->movm_stack_size = 0;
1685 ret->flags = 0;
1686 ret->value = 0;
1687 }
1688
1689 return (struct bfd_hash_entry *) ret;
1690 }
1691
1692 /* Create an cr16 ELF linker hash table. */
1693
1694 static struct bfd_link_hash_table *
1695 elf32_cr16_link_hash_table_create (bfd *abfd)
1696 {
1697 struct elf32_cr16_link_hash_table *ret;
1698 bfd_size_type amt = sizeof (struct elf32_cr16_link_hash_table);
1699
1700 ret = (struct elf32_cr16_link_hash_table *) bfd_malloc (amt);
1701 if (ret == (struct elf32_cr16_link_hash_table *) NULL)
1702 return NULL;
1703
1704 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1705 elf32_cr16_link_hash_newfunc,
1706 sizeof (struct elf32_cr16_link_hash_entry)))
1707 {
1708 free (ret);
1709 return NULL;
1710 }
1711
1712 ret->flags = 0;
1713 amt = sizeof (struct elf_link_hash_table);
1714 ret->static_hash_table
1715 = (struct elf32_cr16_link_hash_table *) bfd_malloc (amt);
1716 if (ret->static_hash_table == NULL)
1717 {
1718 free (ret);
1719 return NULL;
1720 }
1721
1722 if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
1723 elf32_cr16_link_hash_newfunc,
1724 sizeof (struct elf32_cr16_link_hash_entry)))
1725 {
1726 free (ret->static_hash_table);
1727 free (ret);
1728 return NULL;
1729 }
1730 return &ret->root.root;
1731 }
1732
1733 /* Free an cr16 ELF linker hash table. */
1734
1735 static void
1736 elf32_cr16_link_hash_table_free (struct bfd_link_hash_table *hash)
1737 {
1738 struct elf32_cr16_link_hash_table *ret
1739 = (struct elf32_cr16_link_hash_table *) hash;
1740
1741 _bfd_generic_link_hash_table_free
1742 ((struct bfd_link_hash_table *) ret->static_hash_table);
1743 _bfd_generic_link_hash_table_free
1744 ((struct bfd_link_hash_table *) ret);
1745 }
1746
1747 static unsigned long
1748 elf_cr16_mach (flagword flags)
1749 {
1750 switch (flags)
1751 {
1752 case EM_CR16:
1753 default:
1754 return bfd_mach_cr16;
1755 }
1756 }
1757
1758 /* The final processing done just before writing out a CR16 ELF object
1759 file. This gets the CR16 architecture right based on the machine
1760 number. */
1761
1762 static void
1763 _bfd_cr16_elf_final_write_processing (bfd *abfd,
1764 bfd_boolean linker ATTRIBUTE_UNUSED)
1765 {
1766 unsigned long val;
1767 switch (bfd_get_mach (abfd))
1768 {
1769 default:
1770 case bfd_mach_cr16:
1771 val = EM_CR16;
1772 break;
1773 }
1774
1775
1776 elf_elfheader (abfd)->e_flags |= val;
1777 }
1778
1779
1780 static bfd_boolean
1781 _bfd_cr16_elf_object_p (bfd *abfd)
1782 {
1783 bfd_default_set_arch_mach (abfd, bfd_arch_cr16,
1784 elf_cr16_mach (elf_elfheader (abfd)->e_flags));
1785 return TRUE;
1786 }
1787
1788 /* Merge backend specific data from an object file to the output
1789 object file when linking. */
1790
1791 static bfd_boolean
1792 _bfd_cr16_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
1793 {
1794 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1795 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1796 return TRUE;
1797
1798 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
1799 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
1800 {
1801 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
1802 bfd_get_mach (ibfd)))
1803 return FALSE;
1804 }
1805
1806 return TRUE;
1807 }
1808
1809
1810 /* This function handles relaxing for the CR16.
1811
1812 There's quite a few relaxing opportunites available on the CR16:
1813
1814 * bcond:24 -> bcond:16 1 byte
1815 * bcond:16 -> bcond:8 1 byte
1816 * arithmetic imm32 -> arithmetic imm20 12 bits
1817 * arithmetic imm20/imm16 -> arithmetic imm4 12/16 bits
1818
1819 Symbol- and reloc-reading infrastructure copied from elf-m10200.c. */
1820
1821 static bfd_boolean
1822 elf32_cr16_relax_section (bfd *abfd, asection *sec,
1823 struct bfd_link_info *link_info, bfd_boolean *again)
1824 {
1825 Elf_Internal_Shdr *symtab_hdr;
1826 Elf_Internal_Rela *internal_relocs;
1827 Elf_Internal_Rela *irel, *irelend;
1828 bfd_byte *contents = NULL;
1829 Elf_Internal_Sym *isymbuf = NULL;
1830
1831 /* Assume nothing changes. */
1832 *again = FALSE;
1833
1834 /* We don't have to do anything for a relocatable link, if
1835 this section does not have relocs, or if this is not a
1836 code section. */
1837 if (link_info->relocatable
1838 || (sec->flags & SEC_RELOC) == 0
1839 || sec->reloc_count == 0
1840 || (sec->flags & SEC_CODE) == 0)
1841 return TRUE;
1842
1843 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1844
1845 /* Get a copy of the native relocations. */
1846 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
1847 link_info->keep_memory);
1848 if (internal_relocs == NULL)
1849 goto error_return;
1850
1851 /* Walk through them looking for relaxing opportunities. */
1852 irelend = internal_relocs + sec->reloc_count;
1853 for (irel = internal_relocs; irel < irelend; irel++)
1854 {
1855 bfd_vma symval;
1856
1857 /* If this isn't something that can be relaxed, then ignore
1858 this reloc. */
1859 if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP16
1860 && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP24
1861 && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM32
1862 && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM20
1863 && ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM16)
1864 continue;
1865
1866 /* Get the section contents if we haven't done so already. */
1867 if (contents == NULL)
1868 {
1869 /* Get cached copy if it exists. */
1870 if (elf_section_data (sec)->this_hdr.contents != NULL)
1871 contents = elf_section_data (sec)->this_hdr.contents;
1872 /* Go get them off disk. */
1873 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1874 goto error_return;
1875 }
1876
1877 /* Read this BFD's local symbols if we haven't done so already. */
1878 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
1879 {
1880 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1881 if (isymbuf == NULL)
1882 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
1883 symtab_hdr->sh_info, 0,
1884 NULL, NULL, NULL);
1885 if (isymbuf == NULL)
1886 goto error_return;
1887 }
1888
1889 /* Get the value of the symbol referred to by the reloc. */
1890 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1891 {
1892 /* A local symbol. */
1893 Elf_Internal_Sym *isym;
1894 asection *sym_sec;
1895
1896 isym = isymbuf + ELF32_R_SYM (irel->r_info);
1897 if (isym->st_shndx == SHN_UNDEF)
1898 sym_sec = bfd_und_section_ptr;
1899 else if (isym->st_shndx == SHN_ABS)
1900 sym_sec = bfd_abs_section_ptr;
1901 else if (isym->st_shndx == SHN_COMMON)
1902 sym_sec = bfd_com_section_ptr;
1903 else
1904 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1905 symval = (isym->st_value
1906 + sym_sec->output_section->vma
1907 + sym_sec->output_offset);
1908 }
1909 else
1910 {
1911 unsigned long indx;
1912 struct elf_link_hash_entry *h;
1913
1914 /* An external symbol. */
1915 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
1916 h = elf_sym_hashes (abfd)[indx];
1917 BFD_ASSERT (h != NULL);
1918
1919 if (h->root.type != bfd_link_hash_defined
1920 && h->root.type != bfd_link_hash_defweak)
1921 /* This appears to be a reference to an undefined
1922 symbol. Just ignore it--it will be caught by the
1923 regular reloc processing. */
1924 continue;
1925
1926 symval = (h->root.u.def.value
1927 + h->root.u.def.section->output_section->vma
1928 + h->root.u.def.section->output_offset);
1929 }
1930
1931 /* For simplicity of coding, we are going to modify the section
1932 contents, the section relocs, and the BFD symbol table. We
1933 must tell the rest of the code not to free up this
1934 information. It would be possible to instead create a table
1935 of changes which have to be made, as is done in coff-mips.c;
1936 that would be more work, but would require less memory when
1937 the linker is run. */
1938
1939 /* Try to turn a 24 branch/call into a 16bit relative
1940 branch/call. */
1941 if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP24)
1942 {
1943 bfd_vma value = symval;
1944
1945 /* Deal with pc-relative gunk. */
1946 value -= (sec->output_section->vma + sec->output_offset);
1947 value -= irel->r_offset;
1948 value += irel->r_addend;
1949
1950 /* See if the value will fit in 16 bits, note the high value is
1951 0xfffe + 2 as the target will be two bytes closer if we are
1952 able to relax. */
1953 if ((long) value < 0x10000 && (long) value > -0x10002)
1954 {
1955 unsigned int code;
1956
1957 /* Get the opcode. */
1958 code = (unsigned int) bfd_get_32 (abfd, contents + irel->r_offset);
1959
1960 /* Verify it's a 'bcond' and fix the opcode. */
1961 if ((code & 0xffff) == 0x0010)
1962 bfd_put_16 (abfd, 0x1800 | ((0xf & (code >> 20)) << 4), contents + irel->r_offset);
1963 else
1964 continue;
1965
1966 /* Note that we've changed the relocs, section contents, etc. */
1967 elf_section_data (sec)->relocs = internal_relocs;
1968 elf_section_data (sec)->this_hdr.contents = contents;
1969 symtab_hdr->contents = (unsigned char *) isymbuf;
1970
1971 /* Fix the relocation's type. */
1972 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1973 R_CR16_DISP16);
1974
1975 /* Delete two bytes of data. */
1976 if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
1977 irel->r_offset + 2, 2))
1978 goto error_return;
1979
1980 /* That will change things, so, we should relax again.
1981 Note that this is not required, and it may be slow. */
1982 *again = TRUE;
1983 }
1984 }
1985
1986 /* Try to turn a 16bit pc-relative branch into an
1987 8bit pc-relative branch. */
1988 if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP16)
1989 {
1990 bfd_vma value = symval;
1991
1992 /* Deal with pc-relative gunk. */
1993 value -= (sec->output_section->vma + sec->output_offset);
1994 value -= irel->r_offset;
1995 value += irel->r_addend;
1996
1997 /* See if the value will fit in 8 bits, note the high value is
1998 0xfc + 2 as the target will be two bytes closer if we are
1999 able to relax. */
2000 /*if ((long) value < 0x1fa && (long) value > -0x100) REVISIT:range */
2001 if ((long) value < 0xfa && (long) value > -0x100)
2002 {
2003 unsigned short code;
2004
2005 /* Get the opcode. */
2006 code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
2007
2008 /* Verify it's a 'bcond' and fix the opcode. */
2009 if ((code & 0xff0f) == 0x1800)
2010 bfd_put_16 (abfd, (code & 0xf0f0), contents + irel->r_offset);
2011 else
2012 continue;
2013
2014 /* Note that we've changed the relocs, section contents, etc. */
2015 elf_section_data (sec)->relocs = internal_relocs;
2016 elf_section_data (sec)->this_hdr.contents = contents;
2017 symtab_hdr->contents = (unsigned char *) isymbuf;
2018
2019 /* Fix the relocation's type. */
2020 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2021 R_CR16_DISP8);
2022
2023 /* Delete two bytes of data. */
2024 if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
2025 irel->r_offset + 2, 2))
2026 goto error_return;
2027
2028 /* That will change things, so, we should relax again.
2029 Note that this is not required, and it may be slow. */
2030 *again = TRUE;
2031 }
2032 }
2033
2034 /* Try to turn a 32-bit IMM address into a 20/16-bit IMM address */
2035 if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM32)
2036 {
2037 bfd_vma value = symval;
2038 unsigned short is_add_mov = 0;
2039 bfd_vma value1 = 0;
2040
2041 /* Get the existing value from the mcode */
2042 value1 = ((bfd_get_32 (abfd, contents + irel->r_offset + 2) >> 16)
2043 |(((bfd_get_32 (abfd, contents + irel->r_offset + 2) & 0xffff) << 16)));
2044
2045 /* See if the value will fit in 20 bits. */
2046 if ((long) (value + value1) < 0xfffff && (long) (value + value1) > 0)
2047 {
2048 unsigned short code;
2049
2050 /* Get the opcode. */
2051 code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
2052
2053 /* Verify it's a 'arithmetic ADDD or MOVD instruction'.
2054 For ADDD and MOVD only, convert to IMM32 -> IMM20. */
2055
2056 if (((code & 0xfff0) == 0x0070) || ((code & 0xfff0) == 0x0020))
2057 is_add_mov = 1;
2058
2059 if (is_add_mov)
2060 {
2061 /* Note that we've changed the relocs, section contents,
2062 etc. */
2063 elf_section_data (sec)->relocs = internal_relocs;
2064 elf_section_data (sec)->this_hdr.contents = contents;
2065 symtab_hdr->contents = (unsigned char *) isymbuf;
2066
2067 /* Fix the opcode. */
2068 if ((code & 0xfff0) == 0x0070) /* For movd. */
2069 bfd_put_8 (abfd, 0x05, contents + irel->r_offset + 1);
2070 else /* code == 0x0020 for addd. */
2071 bfd_put_8 (abfd, 0x04, contents + irel->r_offset + 1);
2072
2073 bfd_put_8 (abfd, (code & 0xf) << 4, contents + irel->r_offset);
2074
2075 /* If existing value is nagavive adjust approriately
2076 place the 16-20bits (ie 4 bit) in new opcode,
2077 as the 0xffffxxxx, the higher 2 byte values removed. */
2078 if (value1 & 0x80000000)
2079 bfd_put_8 (abfd, (0x0f | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset);
2080 else
2081 bfd_put_8 (abfd, (((value1 >> 16)&0xf) | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset);
2082
2083 /* Fix the relocation's type. */
2084 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2085 R_CR16_IMM20);
2086
2087 /* Delete two bytes of data. */
2088 if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
2089 irel->r_offset + 2, 2))
2090 goto error_return;
2091
2092 /* That will change things, so, we should relax again.
2093 Note that this is not required, and it may be slow. */
2094 *again = TRUE;
2095 }
2096 }
2097
2098 /* See if the value will fit in 16 bits. */
2099 if ((!is_add_mov)
2100 && ((long)(value + value1) < 0x7fff && (long)(value + value1) > 0))
2101 {
2102 unsigned short code;
2103
2104 /* Get the opcode. */
2105 code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
2106
2107 /* Note that we've changed the relocs, section contents, etc. */
2108 elf_section_data (sec)->relocs = internal_relocs;
2109 elf_section_data (sec)->this_hdr.contents = contents;
2110 symtab_hdr->contents = (unsigned char *) isymbuf;
2111
2112 /* Fix the opcode. */
2113 if ((code & 0xf0) == 0x70) /* For movd. */
2114 bfd_put_8 (abfd, 0x54, contents + irel->r_offset + 1);
2115 else if ((code & 0xf0) == 0x20) /* For addd. */
2116 bfd_put_8 (abfd, 0x60, contents + irel->r_offset + 1);
2117 else if ((code & 0xf0) == 0x90) /* For cmpd. */
2118 bfd_put_8 (abfd, 0x56, contents + irel->r_offset + 1);
2119 else
2120 continue;
2121
2122 bfd_put_8 (abfd, 0xb0 | (code & 0xf), contents + irel->r_offset);
2123
2124 /* If existing value is nagavive adjust approriately
2125 place the 12-16bits (ie 4 bit) in new opcode,
2126 as the 0xfffffxxx, the higher 2 byte values removed. */
2127 if (value1 & 0x80000000)
2128 bfd_put_8 (abfd, (0x0f | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset);
2129 else
2130 bfd_put_16 (abfd, value1, contents + irel->r_offset + 2);
2131
2132
2133 /* Fix the relocation's type. */
2134 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2135 R_CR16_IMM16);
2136
2137 /* Delete two bytes of data. */
2138 if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
2139 irel->r_offset + 2, 2))
2140 goto error_return;
2141
2142 /* That will change things, so, we should relax again.
2143 Note that this is not required, and it may be slow. */
2144 *again = TRUE;
2145 }
2146 }
2147
2148 #if 0
2149 /* Try to turn a 16bit immediate address into a 4bit
2150 immediate address. */
2151 if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20)
2152 || (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM16))
2153 {
2154 bfd_vma value = symval;
2155 bfd_vma value1 = 0;
2156
2157 /* Get the existing value from the mcode */
2158 value1 = ((bfd_get_16 (abfd, contents + irel->r_offset + 2) & 0xffff));
2159
2160 if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20)
2161 {
2162 value1 |= ((bfd_get_16 (abfd, contents + irel->r_offset + 1) & 0xf000) << 0x4);
2163 }
2164
2165 /* See if the value will fit in 4 bits. */
2166 if ((((long) (value + value1)) < 0xf)
2167 && (((long) (value + value1)) > 0))
2168 {
2169 unsigned short code;
2170
2171 /* Get the opcode. */
2172 code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
2173
2174 /* Note that we've changed the relocs, section contents, etc. */
2175 elf_section_data (sec)->relocs = internal_relocs;
2176 elf_section_data (sec)->this_hdr.contents = contents;
2177 symtab_hdr->contents = (unsigned char *) isymbuf;
2178
2179 /* Fix the opcode. */
2180 if (((code & 0x0f00) == 0x0400) || ((code & 0x0f00) == 0x0500))
2181 {
2182 if ((code & 0x0f00) == 0x0400) /* For movd imm20. */
2183 bfd_put_8 (abfd, 0x60, contents + irel->r_offset);
2184 else /* For addd imm20. */
2185 bfd_put_8 (abfd, 0x54, contents + irel->r_offset);
2186 bfd_put_8 (abfd, (code & 0xf0) >> 4, contents + irel->r_offset + 1);
2187 }
2188 else
2189 {
2190 if ((code & 0xfff0) == 0x56b0) /* For cmpd imm16. */
2191 bfd_put_8 (abfd, 0x56, contents + irel->r_offset);
2192 else if ((code & 0xfff0) == 0x54b0) /* For movd imm16. */
2193 bfd_put_8 (abfd, 0x54, contents + irel->r_offset);
2194 else if ((code & 0xfff0) == 0x58b0) /* For movb imm16. */
2195 bfd_put_8 (abfd, 0x58, contents + irel->r_offset);
2196 else if ((code & 0xfff0) == 0x5Ab0) /* For movw imm16. */
2197 bfd_put_8 (abfd, 0x5A, contents + irel->r_offset);
2198 else if ((code & 0xfff0) == 0x60b0) /* For addd imm16. */
2199 bfd_put_8 (abfd, 0x60, contents + irel->r_offset);
2200 else if ((code & 0xfff0) == 0x30b0) /* For addb imm16. */
2201 bfd_put_8 (abfd, 0x30, contents + irel->r_offset);
2202 else if ((code & 0xfff0) == 0x2Cb0) /* For addub imm16. */
2203 bfd_put_8 (abfd, 0x2C, contents + irel->r_offset);
2204 else if ((code & 0xfff0) == 0x32b0) /* For adduw imm16. */
2205 bfd_put_8 (abfd, 0x32, contents + irel->r_offset);
2206 else if ((code & 0xfff0) == 0x38b0) /* For subb imm16. */
2207 bfd_put_8 (abfd, 0x38, contents + irel->r_offset);
2208 else if ((code & 0xfff0) == 0x3Cb0) /* For subcb imm16. */
2209 bfd_put_8 (abfd, 0x3C, contents + irel->r_offset);
2210 else if ((code & 0xfff0) == 0x3Fb0) /* For subcw imm16. */
2211 bfd_put_8 (abfd, 0x3F, contents + irel->r_offset);
2212 else if ((code & 0xfff0) == 0x3Ab0) /* For subw imm16. */
2213 bfd_put_8 (abfd, 0x3A, contents + irel->r_offset);
2214 else if ((code & 0xfff0) == 0x50b0) /* For cmpb imm16. */
2215 bfd_put_8 (abfd, 0x50, contents + irel->r_offset);
2216 else if ((code & 0xfff0) == 0x52b0) /* For cmpw imm16. */
2217 bfd_put_8 (abfd, 0x52, contents + irel->r_offset);
2218 else
2219 continue;
2220
2221 bfd_put_8 (abfd, (code & 0xf), contents + irel->r_offset + 1);
2222 }
2223
2224 /* Fix the relocation's type. */
2225 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2226 R_CR16_IMM4);
2227
2228 /* Delete two bytes of data. */
2229 if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
2230 irel->r_offset + 2, 2))
2231 goto error_return;
2232
2233 /* That will change things, so, we should relax again.
2234 Note that this is not required, and it may be slow. */
2235 *again = TRUE;
2236 }
2237 }
2238 #endif
2239 }
2240
2241 if (isymbuf != NULL
2242 && symtab_hdr->contents != (unsigned char *) isymbuf)
2243 {
2244 if (! link_info->keep_memory)
2245 free (isymbuf);
2246 else
2247 /* Cache the symbols for elf_link_input_bfd. */
2248 symtab_hdr->contents = (unsigned char *) isymbuf;
2249 }
2250
2251 if (contents != NULL
2252 && elf_section_data (sec)->this_hdr.contents != contents)
2253 {
2254 if (! link_info->keep_memory)
2255 free (contents);
2256 else
2257 /* Cache the section contents for elf_link_input_bfd. */
2258 elf_section_data (sec)->this_hdr.contents = contents;
2259
2260 }
2261
2262 if (internal_relocs != NULL
2263 && elf_section_data (sec)->relocs != internal_relocs)
2264 free (internal_relocs);
2265
2266 return TRUE;
2267
2268 error_return:
2269 if (isymbuf != NULL
2270 && symtab_hdr->contents != (unsigned char *) isymbuf)
2271 free (isymbuf);
2272 if (contents != NULL
2273 && elf_section_data (sec)->this_hdr.contents != contents)
2274 free (contents);
2275 if (internal_relocs != NULL
2276 && elf_section_data (sec)->relocs != internal_relocs)
2277 free (internal_relocs);
2278
2279 return FALSE;
2280 }
2281
2282 static asection *
2283 elf32_cr16_gc_mark_hook (asection *sec,
2284 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2285 Elf_Internal_Rela *rel ATTRIBUTE_UNUSED,
2286 struct elf_link_hash_entry *h,
2287 Elf_Internal_Sym *sym)
2288 {
2289 if (h == NULL)
2290 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
2291
2292 switch (h->root.type)
2293 {
2294 case bfd_link_hash_defined:
2295 case bfd_link_hash_defweak:
2296 return h->root.u.def.section;
2297
2298 case bfd_link_hash_common:
2299 return h->root.u.c.p->section;
2300
2301 default:
2302 return NULL;
2303 }
2304 }
2305
2306 /* Update the got entry reference counts for the section being removed. */
2307
2308 static bfd_boolean
2309 elf32_cr16_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
2310 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2311 asection *sec ATTRIBUTE_UNUSED,
2312 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
2313 {
2314 /* We don't support garbage collection of GOT and PLT relocs yet. */
2315 return TRUE;
2316 }
2317
2318 /* Create dynamic sections when linking against a dynamic object. */
2319
2320 static bfd_boolean
2321 _bfd_cr16_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2322 {
2323 flagword flags;
2324 asection * s;
2325 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
2326 int ptralign = 0;
2327
2328 switch (bed->s->arch_size)
2329 {
2330 case 16:
2331 ptralign = 1;
2332 break;
2333
2334 case 32:
2335 ptralign = 2;
2336 break;
2337
2338 default:
2339 bfd_set_error (bfd_error_bad_value);
2340 return FALSE;
2341 }
2342
2343 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2344 .rel[a].bss sections. */
2345
2346 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2347 | SEC_LINKER_CREATED);
2348
2349 s = bfd_make_section_with_flags (abfd,
2350 (bed->default_use_rela_p
2351 ? ".rela.plt" : ".rel.plt"),
2352 flags | SEC_READONLY);
2353 if (s == NULL
2354 || ! bfd_set_section_alignment (abfd, s, ptralign))
2355 return FALSE;
2356
2357 if (! _bfd_cr16_elf_create_got_section (abfd, info))
2358 return FALSE;
2359
2360 {
2361 const char * secname;
2362 char * relname;
2363 flagword secflags;
2364 asection * sec;
2365
2366 for (sec = abfd->sections; sec; sec = sec->next)
2367 {
2368 secflags = bfd_get_section_flags (abfd, sec);
2369 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
2370 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
2371 continue;
2372
2373 secname = bfd_get_section_name (abfd, sec);
2374 relname = (char *) bfd_malloc (strlen (secname) + 6);
2375 strcpy (relname, ".rela");
2376 strcat (relname, secname);
2377
2378 s = bfd_make_section_with_flags (abfd, relname,
2379 flags | SEC_READONLY);
2380 if (s == NULL
2381 || ! bfd_set_section_alignment (abfd, s, ptralign))
2382 return FALSE;
2383 }
2384 }
2385
2386 if (bed->want_dynbss)
2387 {
2388 /* The .dynbss section is a place to put symbols which are defined
2389 by dynamic objects, are referenced by regular objects, and are
2390 not functions. We must allocate space for them in the process
2391 image and use a R_*_COPY reloc to tell the dynamic linker to
2392 initialize them at run time. The linker script puts the .dynbss
2393 section into the .bss section of the final image. */
2394 s = bfd_make_section_with_flags (abfd, ".dynbss",
2395 SEC_ALLOC | SEC_LINKER_CREATED);
2396 if (s == NULL)
2397 return FALSE;
2398
2399 /* The .rel[a].bss section holds copy relocs. This section is not
2400 normally needed. We need to create it here, though, so that the
2401 linker will map it to an output section. We can't just create it
2402 only if we need it, because we will not know whether we need it
2403 until we have seen all the input files, and the first time the
2404 main linker code calls BFD after examining all the input files
2405 (size_dynamic_sections) the input sections have already been
2406 mapped to the output sections. If the section turns out not to
2407 be needed, we can discard it later. We will never need this
2408 section when generating a shared object, since they do not use
2409 copy relocs. */
2410 if (! info->executable)
2411 {
2412 s = bfd_make_section_with_flags (abfd,
2413 (bed->default_use_rela_p
2414 ? ".rela.bss" : ".rel.bss"),
2415 flags | SEC_READONLY);
2416 if (s == NULL
2417 || ! bfd_set_section_alignment (abfd, s, ptralign))
2418 return FALSE;
2419 }
2420 }
2421
2422 return TRUE;
2423 }
2424 \f
2425 /* Adjust a symbol defined by a dynamic object and referenced by a
2426 regular object. The current definition is in some section of the
2427 dynamic object, but we're not including those sections. We have to
2428 change the definition to something the rest of the link can
2429 understand. */
2430
2431 static bfd_boolean
2432 _bfd_cr16_elf_adjust_dynamic_symbol (struct bfd_link_info * info,
2433 struct elf_link_hash_entry * h)
2434 {
2435 bfd * dynobj;
2436 asection * s;
2437
2438 dynobj = elf_hash_table (info)->dynobj;
2439
2440 /* Make sure we know what is going on here. */
2441 BFD_ASSERT (dynobj != NULL
2442 && (h->needs_plt
2443 || h->u.weakdef != NULL
2444 || (h->def_dynamic
2445 && h->ref_regular
2446 && !h->def_regular)));
2447
2448 /* If this is a function, put it in the procedure linkage table. We
2449 will fill in the contents of the procedure linkage table later,
2450 when we know the address of the .got section. */
2451 if (h->type == STT_FUNC
2452 || h->needs_plt)
2453 {
2454 if (! info->executable
2455 && !h->def_dynamic
2456 && !h->ref_dynamic)
2457 {
2458 /* This case can occur if we saw a PLT reloc in an input
2459 file, but the symbol was never referred to by a dynamic
2460 object. In such a case, we don't actually need to build
2461 a procedure linkage table, and we can just do a REL32
2462 reloc instead. */
2463 BFD_ASSERT (h->needs_plt);
2464 return TRUE;
2465 }
2466
2467 /* Make sure this symbol is output as a dynamic symbol. */
2468 if (h->dynindx == -1)
2469 {
2470 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2471 return FALSE;
2472 }
2473
2474 /* We also need to make an entry in the .got.plt section, which
2475 will be placed in the .got section by the linker script. */
2476
2477 s = bfd_get_section_by_name (dynobj, ".got.plt");
2478 BFD_ASSERT (s != NULL);
2479 s->size += 4;
2480
2481 /* We also need to make an entry in the .rela.plt section. */
2482
2483 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2484 BFD_ASSERT (s != NULL);
2485 s->size += sizeof (Elf32_External_Rela);
2486
2487 return TRUE;
2488 }
2489
2490 /* If this is a weak symbol, and there is a real definition, the
2491 processor independent code will have arranged for us to see the
2492 real definition first, and we can just use the same value. */
2493 if (h->u.weakdef != NULL)
2494 {
2495 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2496 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2497 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2498 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2499 return TRUE;
2500 }
2501
2502 /* This is a reference to a symbol defined by a dynamic object which
2503 is not a function. */
2504
2505 /* If we are creating a shared library, we must presume that the
2506 only references to the symbol are via the global offset table.
2507 For such cases we need not do anything here; the relocations will
2508 be handled correctly by relocate_section. */
2509 if (info->executable)
2510 return TRUE;
2511
2512 /* If there are no references to this symbol that do not use the
2513 GOT, we don't need to generate a copy reloc. */
2514 if (!h->non_got_ref)
2515 return TRUE;
2516
2517 if (h->size == 0)
2518 {
2519 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2520 h->root.root.string);
2521 return TRUE;
2522 }
2523
2524 /* We must allocate the symbol in our .dynbss section, which will
2525 become part of the .bss section of the executable. There will be
2526 an entry for this symbol in the .dynsym section. The dynamic
2527 object will contain position independent code, so all references
2528 from the dynamic object to this symbol will go through the global
2529 offset table. The dynamic linker will use the .dynsym entry to
2530 determine the address it must put in the global offset table, so
2531 both the dynamic object and the regular object will refer to the
2532 same memory location for the variable. */
2533
2534 s = bfd_get_section_by_name (dynobj, ".dynbss");
2535 BFD_ASSERT (s != NULL);
2536
2537 /* We must generate a R_CR16_COPY reloc to tell the dynamic linker to
2538 copy the initial value out of the dynamic object and into the
2539 runtime process image. We need to remember the offset into the
2540 .rela.bss section we are going to use. */
2541 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2542 {
2543 asection * srel;
2544
2545 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
2546 BFD_ASSERT (srel != NULL);
2547 srel->size += sizeof (Elf32_External_Rela);
2548 h->needs_copy = 1;
2549 }
2550
2551 return _bfd_elf_adjust_dynamic_copy (h, s);
2552 }
2553
2554 /* Set the sizes of the dynamic sections. */
2555
2556 static bfd_boolean
2557 _bfd_cr16_elf_size_dynamic_sections (bfd * output_bfd,
2558 struct bfd_link_info * info)
2559 {
2560 bfd * dynobj;
2561 asection * s;
2562 bfd_boolean plt;
2563 bfd_boolean relocs;
2564 bfd_boolean reltext;
2565
2566 dynobj = elf_hash_table (info)->dynobj;
2567 BFD_ASSERT (dynobj != NULL);
2568
2569 if (elf_hash_table (info)->dynamic_sections_created)
2570 {
2571 /* Set the contents of the .interp section to the interpreter. */
2572 if (info->executable)
2573 {
2574 #if 0
2575 s = bfd_get_section_by_name (dynobj, ".interp");
2576 BFD_ASSERT (s != NULL);
2577 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2578 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2579 #endif
2580 }
2581 }
2582 else
2583 {
2584 /* We may have created entries in the .rela.got section.
2585 However, if we are not creating the dynamic sections, we will
2586 not actually use these entries. Reset the size of .rela.got,
2587 which will cause it to get stripped from the output file
2588 below. */
2589 s = bfd_get_section_by_name (dynobj, ".rela.got");
2590 if (s != NULL)
2591 s->size = 0;
2592 }
2593
2594 /* The check_relocs and adjust_dynamic_symbol entry points have
2595 determined the sizes of the various dynamic sections. Allocate
2596 memory for them. */
2597 plt = FALSE;
2598 relocs = FALSE;
2599 reltext = FALSE;
2600 for (s = dynobj->sections; s != NULL; s = s->next)
2601 {
2602 const char * name;
2603
2604 if ((s->flags & SEC_LINKER_CREATED) == 0)
2605 continue;
2606
2607 /* It's OK to base decisions on the section name, because none
2608 of the dynobj section names depend upon the input files. */
2609 name = bfd_get_section_name (dynobj, s);
2610
2611 if (strcmp (name, ".plt") == 0)
2612 {
2613 /* Remember whether there is a PLT. */
2614 plt = s->size != 0;
2615 }
2616 else if (CONST_STRNEQ (name, ".rela"))
2617 {
2618 if (s->size != 0)
2619 {
2620 asection * target;
2621
2622 /* Remember whether there are any reloc sections other
2623 than .rela.plt. */
2624 if (strcmp (name, ".rela.plt") != 0)
2625 {
2626 const char * outname;
2627
2628 relocs = TRUE;
2629
2630 /* If this relocation section applies to a read only
2631 section, then we probably need a DT_TEXTREL
2632 entry. The entries in the .rela.plt section
2633 really apply to the .got section, which we
2634 created ourselves and so know is not readonly. */
2635 outname = bfd_get_section_name (output_bfd,
2636 s->output_section);
2637 target = bfd_get_section_by_name (output_bfd, outname + 5);
2638 if (target != NULL
2639 && (target->flags & SEC_READONLY) != 0
2640 && (target->flags & SEC_ALLOC) != 0)
2641 reltext = TRUE;
2642 }
2643
2644 /* We use the reloc_count field as a counter if we need
2645 to copy relocs into the output file. */
2646 s->reloc_count = 0;
2647 }
2648 }
2649 else if (! CONST_STRNEQ (name, ".got")
2650 && strcmp (name, ".dynbss") != 0)
2651 /* It's not one of our sections, so don't allocate space. */
2652 continue;
2653
2654 if (s->size == 0)
2655 {
2656 /* If we don't need this section, strip it from the
2657 output file. This is mostly to handle .rela.bss and
2658 .rela.plt. We must create both sections in
2659 create_dynamic_sections, because they must be created
2660 before the linker maps input sections to output
2661 sections. The linker does that before
2662 adjust_dynamic_symbol is called, and it is that
2663 function which decides whether anything needs to go
2664 into these sections. */
2665 s->flags |= SEC_EXCLUDE;
2666 continue;
2667 }
2668
2669 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2670 continue;
2671
2672 /* Allocate memory for the section contents. We use bfd_zalloc
2673 here in case unused entries are not reclaimed before the
2674 section's contents are written out. This should not happen,
2675 but this way if it does, we get a R_CR16_NONE reloc
2676 instead of garbage. */
2677 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2678 if (s->contents == NULL)
2679 return FALSE;
2680 }
2681
2682 if (elf_hash_table (info)->dynamic_sections_created)
2683 {
2684 /* Add some entries to the .dynamic section. We fill in the
2685 values later, in _bfd_cr16_elf_finish_dynamic_sections,
2686 but we must add the entries now so that we get the correct
2687 size for the .dynamic section. The DT_DEBUG entry is filled
2688 in by the dynamic linker and used by the debugger. */
2689 if (! info->executable)
2690 {
2691 if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
2692 return FALSE;
2693 }
2694
2695 if (plt)
2696 {
2697 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
2698 || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
2699 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
2700 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
2701 return FALSE;
2702 }
2703
2704 if (relocs)
2705 {
2706 if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
2707 || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
2708 || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
2709 sizeof (Elf32_External_Rela)))
2710 return FALSE;
2711 }
2712
2713 if (reltext)
2714 {
2715 if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
2716 return FALSE;
2717 }
2718 }
2719
2720 return TRUE;
2721 }
2722
2723 /* Finish up dynamic symbol handling. We set the contents of various
2724 dynamic sections here. */
2725
2726 static bfd_boolean
2727 _bfd_cr16_elf_finish_dynamic_symbol (bfd * output_bfd,
2728 struct bfd_link_info * info,
2729 struct elf_link_hash_entry * h,
2730 Elf_Internal_Sym * sym)
2731 {
2732 bfd * dynobj;
2733
2734 dynobj = elf_hash_table (info)->dynobj;
2735
2736 if (h->got.offset != (bfd_vma) -1)
2737 {
2738 asection * sgot;
2739 asection * srel;
2740 Elf_Internal_Rela rel;
2741
2742 /* This symbol has an entry in the global offset table. Set it up. */
2743
2744 sgot = bfd_get_section_by_name (dynobj, ".got");
2745 srel = bfd_get_section_by_name (dynobj, ".rela.got");
2746 BFD_ASSERT (sgot != NULL && srel != NULL);
2747
2748 rel.r_offset = (sgot->output_section->vma
2749 + sgot->output_offset
2750 + (h->got.offset & ~1));
2751
2752 /* If this is a -Bsymbolic link, and the symbol is defined
2753 locally, we just want to emit a RELATIVE reloc. Likewise if
2754 the symbol was forced to be local because of a version file.
2755 The entry in the global offset table will already have been
2756 initialized in the relocate_section function. */
2757 if (info->executable
2758 && (info->symbolic || h->dynindx == -1)
2759 && h->def_regular)
2760 {
2761 rel.r_info = ELF32_R_INFO (0, R_CR16_GOT_REGREL20);
2762 rel.r_addend = (h->root.u.def.value
2763 + h->root.u.def.section->output_section->vma
2764 + h->root.u.def.section->output_offset);
2765 }
2766 else
2767 {
2768 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
2769 rel.r_info = ELF32_R_INFO (h->dynindx, R_CR16_GOT_REGREL20);
2770 rel.r_addend = 0;
2771 }
2772
2773 bfd_elf32_swap_reloca_out (output_bfd, &rel,
2774 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
2775 + srel->reloc_count));
2776 ++ srel->reloc_count;
2777 }
2778
2779 if (h->needs_copy)
2780 {
2781 asection * s;
2782 Elf_Internal_Rela rel;
2783
2784 /* This symbol needs a copy reloc. Set it up. */
2785 BFD_ASSERT (h->dynindx != -1
2786 && (h->root.type == bfd_link_hash_defined
2787 || h->root.type == bfd_link_hash_defweak));
2788
2789 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2790 ".rela.bss");
2791 BFD_ASSERT (s != NULL);
2792
2793 rel.r_offset = (h->root.u.def.value
2794 + h->root.u.def.section->output_section->vma
2795 + h->root.u.def.section->output_offset);
2796 rel.r_info = ELF32_R_INFO (h->dynindx, R_CR16_GOT_REGREL20);
2797 rel.r_addend = 0;
2798 bfd_elf32_swap_reloca_out (output_bfd, &rel,
2799 (bfd_byte *) ((Elf32_External_Rela *) s->contents
2800 + s->reloc_count));
2801 ++ s->reloc_count;
2802 }
2803
2804 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2805 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2806 || h == elf_hash_table (info)->hgot)
2807 sym->st_shndx = SHN_ABS;
2808
2809 return TRUE;
2810 }
2811
2812 /* Finish up the dynamic sections. */
2813
2814 static bfd_boolean
2815 _bfd_cr16_elf_finish_dynamic_sections (bfd * output_bfd,
2816 struct bfd_link_info * info)
2817 {
2818 bfd * dynobj;
2819 asection * sgot;
2820 asection * sdyn;
2821
2822 dynobj = elf_hash_table (info)->dynobj;
2823
2824 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2825 BFD_ASSERT (sgot != NULL);
2826 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2827
2828 if (elf_hash_table (info)->dynamic_sections_created)
2829 {
2830 Elf32_External_Dyn * dyncon;
2831 Elf32_External_Dyn * dynconend;
2832
2833 BFD_ASSERT (sdyn != NULL);
2834
2835 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2836 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2837
2838 for (; dyncon < dynconend; dyncon++)
2839 {
2840 Elf_Internal_Dyn dyn;
2841 const char * name;
2842 asection * s;
2843
2844 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2845
2846 switch (dyn.d_tag)
2847 {
2848 default:
2849 break;
2850
2851 case DT_PLTGOT:
2852 name = ".got";
2853 goto get_vma;
2854
2855 case DT_JMPREL:
2856 name = ".rela.plt";
2857 get_vma:
2858 s = bfd_get_section_by_name (output_bfd, name);
2859 BFD_ASSERT (s != NULL);
2860 dyn.d_un.d_ptr = s->vma;
2861 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2862 break;
2863
2864 case DT_PLTRELSZ:
2865 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2866 BFD_ASSERT (s != NULL);
2867 dyn.d_un.d_val = s->size;
2868 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2869 break;
2870
2871 case DT_RELASZ:
2872 /* My reading of the SVR4 ABI indicates that the
2873 procedure linkage table relocs (DT_JMPREL) should be
2874 included in the overall relocs (DT_RELA). This is
2875 what Solaris does. However, UnixWare can not handle
2876 that case. Therefore, we override the DT_RELASZ entry
2877 here to make it not include the JMPREL relocs. Since
2878 the linker script arranges for .rela.plt to follow all
2879 other relocation sections, we don't have to worry
2880 about changing the DT_RELA entry. */
2881 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2882 if (s != NULL)
2883 dyn.d_un.d_val -= s->size;
2884 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2885 break;
2886 }
2887 }
2888
2889 }
2890
2891 /* Fill in the first three entries in the global offset table. */
2892 if (sgot->size > 0)
2893 {
2894 if (sdyn == NULL)
2895 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2896 else
2897 bfd_put_32 (output_bfd,
2898 sdyn->output_section->vma + sdyn->output_offset,
2899 sgot->contents);
2900 }
2901
2902 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2903
2904 return TRUE;
2905 }
2906
2907 /* Given a .data.rel section and a .emreloc in-memory section, store
2908 relocation information into the .emreloc section which can be
2909 used at runtime to relocate the section. This is called by the
2910 linker when the --embedded-relocs switch is used. This is called
2911 after the add_symbols entry point has been called for all the
2912 objects, and before the final_link entry point is called. */
2913
2914 bfd_boolean
2915 bfd_cr16_elf32_create_embedded_relocs (bfd *abfd,
2916 struct bfd_link_info *info,
2917 asection *datasec,
2918 asection *relsec,
2919 char **errmsg)
2920 {
2921 Elf_Internal_Shdr *symtab_hdr;
2922 Elf_Internal_Sym *isymbuf = NULL;
2923 Elf_Internal_Rela *internal_relocs = NULL;
2924 Elf_Internal_Rela *irel, *irelend;
2925 bfd_byte *p;
2926 bfd_size_type amt;
2927
2928 BFD_ASSERT (! info->relocatable);
2929
2930 *errmsg = NULL;
2931
2932 if (datasec->reloc_count == 0)
2933 return TRUE;
2934
2935 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2936
2937 /* Get a copy of the native relocations. */
2938 internal_relocs = (_bfd_elf_link_read_relocs
2939 (abfd, datasec, NULL, NULL, info->keep_memory));
2940 if (internal_relocs == NULL)
2941 goto error_return;
2942
2943 amt = (bfd_size_type) datasec->reloc_count * 8;
2944 relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
2945 if (relsec->contents == NULL)
2946 goto error_return;
2947
2948 p = relsec->contents;
2949
2950 irelend = internal_relocs + datasec->reloc_count;
2951 for (irel = internal_relocs; irel < irelend; irel++, p += 8)
2952 {
2953 asection *targetsec;
2954
2955 /* We are going to write a four byte longword into the runtime
2956 reloc section. The longword will be the address in the data
2957 section which must be relocated. It is followed by the name
2958 of the target section NUL-padded or truncated to 8
2959 characters. */
2960
2961 /* We can only relocate absolute longword relocs at run time. */
2962 if (!((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32a)
2963 || (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32)))
2964 {
2965 *errmsg = _("unsupported reloc type");
2966 bfd_set_error (bfd_error_bad_value);
2967 goto error_return;
2968 }
2969
2970 /* Get the target section referred to by the reloc. */
2971 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2972 {
2973 /* A local symbol. */
2974 Elf_Internal_Sym *isym;
2975
2976 /* Read this BFD's local symbols if we haven't done so already. */
2977 if (isymbuf == NULL)
2978 {
2979 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2980 if (isymbuf == NULL)
2981 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2982 symtab_hdr->sh_info, 0,
2983 NULL, NULL, NULL);
2984 if (isymbuf == NULL)
2985 goto error_return;
2986 }
2987
2988 isym = isymbuf + ELF32_R_SYM (irel->r_info);
2989 targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2990 }
2991 else
2992 {
2993 unsigned long indx;
2994 struct elf_link_hash_entry *h;
2995
2996 /* An external symbol. */
2997 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2998 h = elf_sym_hashes (abfd)[indx];
2999 BFD_ASSERT (h != NULL);
3000 if (h->root.type == bfd_link_hash_defined
3001 || h->root.type == bfd_link_hash_defweak)
3002 targetsec = h->root.u.def.section;
3003 else
3004 targetsec = NULL;
3005 }
3006
3007 bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
3008 memset (p + 4, 0, 4);
3009 if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32a)
3010 && (targetsec != NULL) )
3011 strncpy ((char *) p + 4, targetsec->output_section->name, 4);
3012 }
3013
3014 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3015 free (isymbuf);
3016 if (internal_relocs != NULL
3017 && elf_section_data (datasec)->relocs != internal_relocs)
3018 free (internal_relocs);
3019 return TRUE;
3020
3021 error_return:
3022 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3023 free (isymbuf);
3024 if (internal_relocs != NULL
3025 && elf_section_data (datasec)->relocs != internal_relocs)
3026 free (internal_relocs);
3027 return FALSE;
3028 }
3029
3030
3031 /* Classify relocation types, such that combreloc can sort them
3032 properly. */
3033
3034 static enum elf_reloc_type_class
3035 _bfd_cr16_elf_reloc_type_class (const Elf_Internal_Rela *rela)
3036 {
3037 switch ((int) ELF32_R_TYPE (rela->r_info))
3038 {
3039 case R_CR16_GOT_REGREL20:
3040 case R_CR16_GOTC_REGREL20:
3041 return reloc_class_relative;
3042 default:
3043 return reloc_class_normal;
3044 }
3045 }
3046
3047 /* Definitions for setting CR16 target vector. */
3048 #define TARGET_LITTLE_SYM bfd_elf32_cr16_vec
3049 #define TARGET_LITTLE_NAME "elf32-cr16"
3050 #define ELF_ARCH bfd_arch_cr16
3051 #define ELF_MACHINE_CODE EM_CR16
3052 #define ELF_MACHINE_ALT1 EM_CR16_OLD
3053 #define ELF_MAXPAGESIZE 0x1
3054 #define elf_symbol_leading_char '_'
3055
3056 #define bfd_elf32_bfd_reloc_type_lookup elf_cr16_reloc_type_lookup
3057 #define bfd_elf32_bfd_reloc_name_lookup elf_cr16_reloc_name_lookup
3058 #define elf_info_to_howto elf_cr16_info_to_howto
3059 #define elf_info_to_howto_rel 0
3060 #define elf_backend_relocate_section elf32_cr16_relocate_section
3061 #define bfd_elf32_bfd_relax_section elf32_cr16_relax_section
3062 #define bfd_elf32_bfd_get_relocated_section_contents \
3063 elf32_cr16_get_relocated_section_contents
3064 #define elf_backend_gc_mark_hook elf32_cr16_gc_mark_hook
3065 #define elf_backend_gc_sweep_hook elf32_cr16_gc_sweep_hook
3066 #define elf_backend_can_gc_sections 1
3067 #define elf_backend_rela_normal 1
3068 #define elf_backend_check_relocs cr16_elf_check_relocs
3069 /* So we can set bits in e_flags. */
3070 #define elf_backend_final_write_processing \
3071 _bfd_cr16_elf_final_write_processing
3072 #define elf_backend_object_p _bfd_cr16_elf_object_p
3073
3074 #define bfd_elf32_bfd_merge_private_bfd_data \
3075 _bfd_cr16_elf_merge_private_bfd_data
3076
3077
3078 #define bfd_elf32_bfd_link_hash_table_create \
3079 elf32_cr16_link_hash_table_create
3080 #define bfd_elf32_bfd_link_hash_table_free \
3081 elf32_cr16_link_hash_table_free
3082
3083 #define elf_backend_create_dynamic_sections \
3084 _bfd_cr16_elf_create_dynamic_sections
3085 #define elf_backend_adjust_dynamic_symbol \
3086 _bfd_cr16_elf_adjust_dynamic_symbol
3087 #define elf_backend_size_dynamic_sections \
3088 _bfd_cr16_elf_size_dynamic_sections
3089 #define elf_backend_omit_section_dynsym \
3090 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
3091 #define elf_backend_finish_dynamic_symbol \
3092 _bfd_cr16_elf_finish_dynamic_symbol
3093 #define elf_backend_finish_dynamic_sections \
3094 _bfd_cr16_elf_finish_dynamic_sections
3095
3096 #define elf_backend_reloc_type_class _bfd_cr16_elf_reloc_type_class
3097
3098
3099 #define elf_backend_want_got_plt 1
3100 #define elf_backend_plt_readonly 1
3101 #define elf_backend_want_plt_sym 0
3102 #define elf_backend_got_header_size 12
3103
3104 #include "elf32-target.h"
GDB Binutils - Deliverables
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