source: trunk/binutils/bfd/elf32-v850.c@ 2463

Last change on this file since 2463 was 610, checked in by bird, 22 years ago

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1/* V850-specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
21/* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char
22 dependencies. As is the gas & simulator code for the v850. */
23
24#include "bfd.h"
25#include "sysdep.h"
26#include "bfdlink.h"
27#include "libbfd.h"
28#include "elf-bfd.h"
29#include "elf/v850.h"
30#include "libiberty.h"
31
32/* Sign-extend a 24-bit number. */
33#define SEXT24(x) ((((x) & 0xffffff) ^ 0x800000) - 0x800000)
34
35static reloc_howto_type *v850_elf_reloc_type_lookup
36 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
37static void v850_elf_info_to_howto_rel
38 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
39static void v850_elf_info_to_howto_rela
40 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
41static bfd_reloc_status_type v850_elf_reloc
42 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
43static bfd_boolean v850_elf_is_local_label_name
44 PARAMS ((bfd *, const char *));
45static bfd_boolean v850_elf_relocate_section
46 PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
47 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
48static bfd_reloc_status_type v850_elf_perform_relocation
49 PARAMS ((bfd *, unsigned int, bfd_vma, bfd_byte *));
50static bfd_boolean v850_elf_check_relocs
51 PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *));
52static void remember_hi16s_reloc
53 PARAMS ((bfd *, bfd_vma, bfd_byte *));
54static bfd_byte * find_remembered_hi16s_reloc
55 PARAMS ((bfd_vma, bfd_boolean *));
56static bfd_reloc_status_type v850_elf_final_link_relocate
57 PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, bfd_vma,
58 bfd_vma, bfd_vma, struct bfd_link_info *, asection *, int));
59static bfd_boolean v850_elf_object_p
60 PARAMS ((bfd *));
61static bfd_boolean v850_elf_fake_sections
62 PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
63static void v850_elf_final_write_processing
64 PARAMS ((bfd *, bfd_boolean));
65static bfd_boolean v850_elf_set_private_flags
66 PARAMS ((bfd *, flagword));
67static bfd_boolean v850_elf_merge_private_bfd_data
68 PARAMS ((bfd *, bfd *));
69static bfd_boolean v850_elf_print_private_bfd_data
70 PARAMS ((bfd *, PTR));
71static bfd_boolean v850_elf_section_from_bfd_section
72 PARAMS ((bfd *, asection *, int *));
73static void v850_elf_symbol_processing
74 PARAMS ((bfd *, asymbol *));
75static bfd_boolean v850_elf_add_symbol_hook
76 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
77 const char **, flagword *, asection **, bfd_vma *));
78static bfd_boolean v850_elf_link_output_symbol_hook
79 PARAMS ((bfd *, struct bfd_link_info *, const char *,
80 Elf_Internal_Sym *, asection *));
81static bfd_boolean v850_elf_section_from_shdr
82 PARAMS ((bfd *, Elf_Internal_Shdr *, const char *));
83static bfd_boolean v850_elf_gc_sweep_hook
84 PARAMS ((bfd *, struct bfd_link_info *, asection *,
85 const Elf_Internal_Rela *));
86static asection * v850_elf_gc_mark_hook
87 PARAMS ((asection *, struct bfd_link_info *,
88 Elf_Internal_Rela *, struct elf_link_hash_entry *,
89 Elf_Internal_Sym *));
90static bfd_reloc_status_type v850_elf_ignore_reloc
91 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
92static bfd_boolean v850_elf_relax_delete_bytes
93 PARAMS ((bfd *, asection *, bfd_vma, bfd_vma, int));
94static bfd_boolean v850_elf_relax_section
95 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
96
97/* Note: It is REQUIRED that the 'type' value of each entry
98 in this array match the index of the entry in the array. */
99static reloc_howto_type v850_elf_howto_table[] =
100{
101 /* This reloc does nothing. */
102 HOWTO (R_V850_NONE, /* type */
103 0, /* rightshift */
104 2, /* size (0 = byte, 1 = short, 2 = long) */
105 32, /* bitsize */
106 FALSE, /* pc_relative */
107 0, /* bitpos */
108 complain_overflow_bitfield, /* complain_on_overflow */
109 bfd_elf_generic_reloc, /* special_function */
110 "R_V850_NONE", /* name */
111 FALSE, /* partial_inplace */
112 0, /* src_mask */
113 0, /* dst_mask */
114 FALSE), /* pcrel_offset */
115
116 /* A PC relative 9 bit branch. */
117 HOWTO (R_V850_9_PCREL, /* type */
118 2, /* rightshift */
119 2, /* size (0 = byte, 1 = short, 2 = long) */
120 26, /* bitsize */
121 TRUE, /* pc_relative */
122 0, /* bitpos */
123 complain_overflow_bitfield, /* complain_on_overflow */
124 v850_elf_reloc, /* special_function */
125 "R_V850_9_PCREL", /* name */
126 FALSE, /* partial_inplace */
127 0x00ffffff, /* src_mask */
128 0x00ffffff, /* dst_mask */
129 TRUE), /* pcrel_offset */
130
131 /* A PC relative 22 bit branch. */
132 HOWTO (R_V850_22_PCREL, /* type */
133 2, /* rightshift */
134 2, /* size (0 = byte, 1 = short, 2 = long) */
135 22, /* bitsize */
136 TRUE, /* pc_relative */
137 7, /* bitpos */
138 complain_overflow_signed, /* complain_on_overflow */
139 v850_elf_reloc, /* special_function */
140 "R_V850_22_PCREL", /* name */
141 FALSE, /* partial_inplace */
142 0x07ffff80, /* src_mask */
143 0x07ffff80, /* dst_mask */
144 TRUE), /* pcrel_offset */
145
146 /* High 16 bits of symbol value. */
147 HOWTO (R_V850_HI16_S, /* type */
148 0, /* rightshift */
149 1, /* size (0 = byte, 1 = short, 2 = long) */
150 16, /* bitsize */
151 FALSE, /* pc_relative */
152 0, /* bitpos */
153 complain_overflow_dont, /* complain_on_overflow */
154 v850_elf_reloc, /* special_function */
155 "R_V850_HI16_S", /* name */
156 FALSE, /* partial_inplace */
157 0xffff, /* src_mask */
158 0xffff, /* dst_mask */
159 FALSE), /* pcrel_offset */
160
161 /* High 16 bits of symbol value. */
162 HOWTO (R_V850_HI16, /* type */
163 0, /* rightshift */
164 1, /* size (0 = byte, 1 = short, 2 = long) */
165 16, /* bitsize */
166 FALSE, /* pc_relative */
167 0, /* bitpos */
168 complain_overflow_dont, /* complain_on_overflow */
169 v850_elf_reloc, /* special_function */
170 "R_V850_HI16", /* name */
171 FALSE, /* partial_inplace */
172 0xffff, /* src_mask */
173 0xffff, /* dst_mask */
174 FALSE), /* pcrel_offset */
175
176 /* Low 16 bits of symbol value. */
177 HOWTO (R_V850_LO16, /* type */
178 0, /* rightshift */
179 1, /* size (0 = byte, 1 = short, 2 = long) */
180 16, /* bitsize */
181 FALSE, /* pc_relative */
182 0, /* bitpos */
183 complain_overflow_dont, /* complain_on_overflow */
184 v850_elf_reloc, /* special_function */
185 "R_V850_LO16", /* name */
186 FALSE, /* partial_inplace */
187 0xffff, /* src_mask */
188 0xffff, /* dst_mask */
189 FALSE), /* pcrel_offset */
190
191 /* Simple 32bit reloc. */
192 HOWTO (R_V850_ABS32, /* type */
193 0, /* rightshift */
194 2, /* size (0 = byte, 1 = short, 2 = long) */
195 32, /* bitsize */
196 FALSE, /* pc_relative */
197 0, /* bitpos */
198 complain_overflow_dont, /* complain_on_overflow */
199 v850_elf_reloc, /* special_function */
200 "R_V850_ABS32", /* name */
201 FALSE, /* partial_inplace */
202 0xffffffff, /* src_mask */
203 0xffffffff, /* dst_mask */
204 FALSE), /* pcrel_offset */
205
206 /* Simple 16bit reloc. */
207 HOWTO (R_V850_16, /* type */
208 0, /* rightshift */
209 1, /* size (0 = byte, 1 = short, 2 = long) */
210 16, /* bitsize */
211 FALSE, /* pc_relative */
212 0, /* bitpos */
213 complain_overflow_dont, /* complain_on_overflow */
214 bfd_elf_generic_reloc, /* special_function */
215 "R_V850_16", /* name */
216 FALSE, /* partial_inplace */
217 0xffff, /* src_mask */
218 0xffff, /* dst_mask */
219 FALSE), /* pcrel_offset */
220
221 /* Simple 8bit reloc. */
222 HOWTO (R_V850_8, /* type */
223 0, /* rightshift */
224 0, /* size (0 = byte, 1 = short, 2 = long) */
225 8, /* bitsize */
226 FALSE, /* pc_relative */
227 0, /* bitpos */
228 complain_overflow_dont, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_V850_8", /* name */
231 FALSE, /* partial_inplace */
232 0xff, /* src_mask */
233 0xff, /* dst_mask */
234 FALSE), /* pcrel_offset */
235
236 /* 16 bit offset from the short data area pointer. */
237 HOWTO (R_V850_SDA_16_16_OFFSET, /* type */
238 0, /* rightshift */
239 1, /* size (0 = byte, 1 = short, 2 = long) */
240 16, /* bitsize */
241 FALSE, /* pc_relative */
242 0, /* bitpos */
243 complain_overflow_dont, /* complain_on_overflow */
244 v850_elf_reloc, /* special_function */
245 "R_V850_SDA_16_16_OFFSET", /* name */
246 FALSE, /* partial_inplace */
247 0xffff, /* src_mask */
248 0xffff, /* dst_mask */
249 FALSE), /* pcrel_offset */
250
251 /* 15 bit offset from the short data area pointer. */
252 HOWTO (R_V850_SDA_15_16_OFFSET, /* type */
253 1, /* rightshift */
254 1, /* size (0 = byte, 1 = short, 2 = long) */
255 16, /* bitsize */
256 FALSE, /* pc_relative */
257 1, /* bitpos */
258 complain_overflow_dont, /* complain_on_overflow */
259 v850_elf_reloc, /* special_function */
260 "R_V850_SDA_15_16_OFFSET", /* name */
261 FALSE, /* partial_inplace */
262 0xfffe, /* src_mask */
263 0xfffe, /* dst_mask */
264 FALSE), /* pcrel_offset */
265
266 /* 16 bit offset from the zero data area pointer. */
267 HOWTO (R_V850_ZDA_16_16_OFFSET, /* type */
268 0, /* rightshift */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
270 16, /* bitsize */
271 FALSE, /* pc_relative */
272 0, /* bitpos */
273 complain_overflow_dont, /* complain_on_overflow */
274 v850_elf_reloc, /* special_function */
275 "R_V850_ZDA_16_16_OFFSET", /* name */
276 FALSE, /* partial_inplace */
277 0xffff, /* src_mask */
278 0xffff, /* dst_mask */
279 FALSE), /* pcrel_offset */
280
281 /* 15 bit offset from the zero data area pointer. */
282 HOWTO (R_V850_ZDA_15_16_OFFSET, /* type */
283 1, /* rightshift */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
285 16, /* bitsize */
286 FALSE, /* pc_relative */
287 1, /* bitpos */
288 complain_overflow_dont, /* complain_on_overflow */
289 v850_elf_reloc, /* special_function */
290 "R_V850_ZDA_15_16_OFFSET", /* name */
291 FALSE, /* partial_inplace */
292 0xfffe, /* src_mask */
293 0xfffe, /* dst_mask */
294 FALSE), /* pcrel_offset */
295
296 /* 6 bit offset from the tiny data area pointer. */
297 HOWTO (R_V850_TDA_6_8_OFFSET, /* type */
298 2, /* rightshift */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
300 8, /* bitsize */
301 FALSE, /* pc_relative */
302 1, /* bitpos */
303 complain_overflow_dont, /* complain_on_overflow */
304 v850_elf_reloc, /* special_function */
305 "R_V850_TDA_6_8_OFFSET", /* name */
306 FALSE, /* partial_inplace */
307 0x7e, /* src_mask */
308 0x7e, /* dst_mask */
309 FALSE), /* pcrel_offset */
310
311 /* 8 bit offset from the tiny data area pointer. */
312 HOWTO (R_V850_TDA_7_8_OFFSET, /* type */
313 1, /* rightshift */
314 1, /* size (0 = byte, 1 = short, 2 = long) */
315 8, /* bitsize */
316 FALSE, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_dont, /* complain_on_overflow */
319 v850_elf_reloc, /* special_function */
320 "R_V850_TDA_7_8_OFFSET", /* name */
321 FALSE, /* partial_inplace */
322 0x7f, /* src_mask */
323 0x7f, /* dst_mask */
324 FALSE), /* pcrel_offset */
325
326 /* 7 bit offset from the tiny data area pointer. */
327 HOWTO (R_V850_TDA_7_7_OFFSET, /* type */
328 0, /* rightshift */
329 1, /* size (0 = byte, 1 = short, 2 = long) */
330 7, /* bitsize */
331 FALSE, /* pc_relative */
332 0, /* bitpos */
333 complain_overflow_dont, /* complain_on_overflow */
334 v850_elf_reloc, /* special_function */
335 "R_V850_TDA_7_7_OFFSET", /* name */
336 FALSE, /* partial_inplace */
337 0x7f, /* src_mask */
338 0x7f, /* dst_mask */
339 FALSE), /* pcrel_offset */
340
341 /* 16 bit offset from the tiny data area pointer! */
342 HOWTO (R_V850_TDA_16_16_OFFSET, /* type */
343 0, /* rightshift */
344 1, /* size (0 = byte, 1 = short, 2 = long) */
345 16, /* bitsize */
346 FALSE, /* pc_relative */
347 0, /* bitpos */
348 complain_overflow_dont, /* complain_on_overflow */
349 v850_elf_reloc, /* special_function */
350 "R_V850_TDA_16_16_OFFSET", /* name */
351 FALSE, /* partial_inplace */
352 0xffff, /* src_mask */
353 0xfff, /* dst_mask */
354 FALSE), /* pcrel_offset */
355
356 /* 5 bit offset from the tiny data area pointer. */
357 HOWTO (R_V850_TDA_4_5_OFFSET, /* type */
358 1, /* rightshift */
359 1, /* size (0 = byte, 1 = short, 2 = long) */
360 5, /* bitsize */
361 FALSE, /* pc_relative */
362 0, /* bitpos */
363 complain_overflow_dont, /* complain_on_overflow */
364 v850_elf_reloc, /* special_function */
365 "R_V850_TDA_4_5_OFFSET", /* name */
366 FALSE, /* partial_inplace */
367 0x0f, /* src_mask */
368 0x0f, /* dst_mask */
369 FALSE), /* pcrel_offset */
370
371 /* 4 bit offset from the tiny data area pointer. */
372 HOWTO (R_V850_TDA_4_4_OFFSET, /* type */
373 0, /* rightshift */
374 1, /* size (0 = byte, 1 = short, 2 = long) */
375 4, /* bitsize */
376 FALSE, /* pc_relative */
377 0, /* bitpos */
378 complain_overflow_dont, /* complain_on_overflow */
379 v850_elf_reloc, /* special_function */
380 "R_V850_TDA_4_4_OFFSET", /* name */
381 FALSE, /* partial_inplace */
382 0x0f, /* src_mask */
383 0x0f, /* dst_mask */
384 FALSE), /* pcrel_offset */
385
386 /* 16 bit offset from the short data area pointer. */
387 HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* type */
388 0, /* rightshift */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
390 16, /* bitsize */
391 FALSE, /* pc_relative */
392 0, /* bitpos */
393 complain_overflow_dont, /* complain_on_overflow */
394 v850_elf_reloc, /* special_function */
395 "R_V850_SDA_16_16_SPLIT_OFFSET",/* name */
396 FALSE, /* partial_inplace */
397 0xfffe0020, /* src_mask */
398 0xfffe0020, /* dst_mask */
399 FALSE), /* pcrel_offset */
400
401 /* 16 bit offset from the zero data area pointer. */
402 HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* type */
403 0, /* rightshift */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
405 16, /* bitsize */
406 FALSE, /* pc_relative */
407 0, /* bitpos */
408 complain_overflow_dont, /* complain_on_overflow */
409 v850_elf_reloc, /* special_function */
410 "R_V850_ZDA_16_16_SPLIT_OFFSET",/* name */
411 FALSE, /* partial_inplace */
412 0xfffe0020, /* src_mask */
413 0xfffe0020, /* dst_mask */
414 FALSE), /* pcrel_offset */
415
416 /* 6 bit offset from the call table base pointer. */
417 HOWTO (R_V850_CALLT_6_7_OFFSET, /* type */
418 0, /* rightshift */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
420 7, /* bitsize */
421 FALSE, /* pc_relative */
422 0, /* bitpos */
423 complain_overflow_dont, /* complain_on_overflow */
424 v850_elf_reloc, /* special_function */
425 "R_V850_CALLT_6_7_OFFSET", /* name */
426 FALSE, /* partial_inplace */
427 0x3f, /* src_mask */
428 0x3f, /* dst_mask */
429 FALSE), /* pcrel_offset */
430
431 /* 16 bit offset from the call table base pointer. */
432 HOWTO (R_V850_CALLT_16_16_OFFSET, /* type */
433 0, /* rightshift */
434 1, /* size (0 = byte, 1 = short, 2 = long) */
435 16, /* bitsize */
436 FALSE, /* pc_relative */
437 0, /* bitpos */
438 complain_overflow_dont, /* complain_on_overflow */
439 v850_elf_reloc, /* special_function */
440 "R_V850_CALLT_16_16_OFFSET", /* name */
441 FALSE, /* partial_inplace */
442 0xffff, /* src_mask */
443 0xffff, /* dst_mask */
444 FALSE), /* pcrel_offset */
445
446 /* GNU extension to record C++ vtable hierarchy */
447 HOWTO (R_V850_GNU_VTINHERIT, /* type */
448 0, /* rightshift */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
450 0, /* bitsize */
451 FALSE, /* pc_relative */
452 0, /* bitpos */
453 complain_overflow_dont, /* complain_on_overflow */
454 NULL, /* special_function */
455 "R_V850_GNU_VTINHERIT", /* name */
456 FALSE, /* partial_inplace */
457 0, /* src_mask */
458 0, /* dst_mask */
459 FALSE), /* pcrel_offset */
460
461 /* GNU extension to record C++ vtable member usage */
462 HOWTO (R_V850_GNU_VTENTRY, /* type */
463 0, /* rightshift */
464 2, /* size (0 = byte, 1 = short, 2 = long) */
465 0, /* bitsize */
466 FALSE, /* pc_relative */
467 0, /* bitpos */
468 complain_overflow_dont, /* complain_on_overflow */
469 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
470 "R_V850_GNU_VTENTRY", /* name */
471 FALSE, /* partial_inplace */
472 0, /* src_mask */
473 0, /* dst_mask */
474 FALSE), /* pcrel_offset */
475
476 /* Indicates a .longcall pseudo-op. The compiler will generate a .longcall
477 pseudo-op when it finds a function call which can be relaxed. */
478 HOWTO (R_V850_LONGCALL, /* type */
479 0, /* rightshift */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
481 32, /* bitsize */
482 TRUE, /* pc_relative */
483 0, /* bitpos */
484 complain_overflow_signed, /* complain_on_overflow */
485 v850_elf_ignore_reloc, /* special_function */
486 "R_V850_LONGCALL", /* name */
487 FALSE, /* partial_inplace */
488 0, /* src_mask */
489 0, /* dst_mask */
490 TRUE), /* pcrel_offset */
491
492 /* Indicates a .longjump pseudo-op. The compiler will generate a
493 .longjump pseudo-op when it finds a branch which can be relaxed. */
494 HOWTO (R_V850_LONGJUMP, /* type */
495 0, /* rightshift */
496 2, /* size (0 = byte, 1 = short, 2 = long) */
497 32, /* bitsize */
498 TRUE, /* pc_relative */
499 0, /* bitpos */
500 complain_overflow_signed, /* complain_on_overflow */
501 v850_elf_ignore_reloc, /* special_function */
502 "R_V850_LONGJUMP", /* name */
503 FALSE, /* partial_inplace */
504 0, /* src_mask */
505 0, /* dst_mask */
506 TRUE), /* pcrel_offset */
507
508 HOWTO (R_V850_ALIGN, /* type */
509 0, /* rightshift */
510 1, /* size (0 = byte, 1 = short, 2 = long) */
511 0, /* bitsize */
512 FALSE, /* pc_relative */
513 0, /* bitpos */
514 complain_overflow_unsigned, /* complain_on_overflow */
515 v850_elf_ignore_reloc, /* special_function */
516 "R_V850_ALIGN", /* name */
517 FALSE, /* partial_inplace */
518 0, /* src_mask */
519 0, /* dst_mask */
520 TRUE), /* pcrel_offset */
521
522 /* Simple pc-relative 32bit reloc. */
523 HOWTO (R_V850_REL32, /* type */
524 0, /* rightshift */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
526 32, /* bitsize */
527 TRUE, /* pc_relative */
528 0, /* bitpos */
529 complain_overflow_dont, /* complain_on_overflow */
530 v850_elf_reloc, /* special_function */
531 "R_V850_REL32", /* name */
532 FALSE, /* partial_inplace */
533 0xffffffff, /* src_mask */
534 0xffffffff, /* dst_mask */
535 FALSE), /* pcrel_offset */
536};
537
538/* Map BFD reloc types to V850 ELF reloc types. */
539
540struct v850_elf_reloc_map
541{
542 /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an
543 unsigned char. */
544 bfd_reloc_code_real_type bfd_reloc_val;
545 unsigned int elf_reloc_val;
546};
547
548static const struct v850_elf_reloc_map v850_elf_reloc_map[] =
549{
550 { BFD_RELOC_NONE, R_V850_NONE },
551 { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL },
552 { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL },
553 { BFD_RELOC_HI16_S, R_V850_HI16_S },
554 { BFD_RELOC_HI16, R_V850_HI16 },
555 { BFD_RELOC_LO16, R_V850_LO16 },
556 { BFD_RELOC_32, R_V850_ABS32 },
557 { BFD_RELOC_32_PCREL, R_V850_REL32 },
558 { BFD_RELOC_16, R_V850_16 },
559 { BFD_RELOC_8, R_V850_8 },
560 { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET },
561 { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET },
562 { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET },
563 { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET },
564 { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET },
565 { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET },
566 { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET },
567 { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET },
568 { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET },
569 { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET },
570 { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET },
571 { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET },
572 { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET },
573 { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET },
574 { BFD_RELOC_VTABLE_INHERIT, R_V850_GNU_VTINHERIT },
575 { BFD_RELOC_VTABLE_ENTRY, R_V850_GNU_VTENTRY },
576 { BFD_RELOC_V850_LONGCALL, R_V850_LONGCALL },
577 { BFD_RELOC_V850_LONGJUMP, R_V850_LONGJUMP },
578 { BFD_RELOC_V850_ALIGN, R_V850_ALIGN },
579
580};
581
582
583/* Map a bfd relocation into the appropriate howto structure. */
584
585static reloc_howto_type *
586v850_elf_reloc_type_lookup (abfd, code)
587 bfd *abfd ATTRIBUTE_UNUSED;
588 bfd_reloc_code_real_type code;
589{
590 unsigned int i;
591
592 for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;)
593 if (v850_elf_reloc_map[i].bfd_reloc_val == code)
594 {
595 unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val;
596
597 BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val);
598
599 return v850_elf_howto_table + elf_reloc_val;
600 }
601
602 return NULL;
603}
604
605
606/* Set the howto pointer for an V850 ELF reloc. */
607
608static void
609v850_elf_info_to_howto_rel (abfd, cache_ptr, dst)
610 bfd *abfd ATTRIBUTE_UNUSED;
611 arelent *cache_ptr;
612 Elf_Internal_Rela *dst;
613{
614 unsigned int r_type;
615
616 r_type = ELF32_R_TYPE (dst->r_info);
617 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
618 cache_ptr->howto = &v850_elf_howto_table[r_type];
619}
620
621/* Set the howto pointer for a V850 ELF reloc (type RELA). */
622static void
623v850_elf_info_to_howto_rela (abfd, cache_ptr, dst)
624 bfd *abfd ATTRIBUTE_UNUSED;
625 arelent * cache_ptr;
626 Elf_Internal_Rela *dst;
627{
628 unsigned int r_type;
629
630 r_type = ELF32_R_TYPE (dst->r_info);
631 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
632 cache_ptr->howto = &v850_elf_howto_table[r_type];
633}
634
635
636/* Look through the relocs for a section during the first phase, and
637 allocate space in the global offset table or procedure linkage
638 table. */
639
640static bfd_boolean
641v850_elf_check_relocs (abfd, info, sec, relocs)
642 bfd *abfd;
643 struct bfd_link_info *info;
644 asection *sec;
645 const Elf_Internal_Rela *relocs;
646{
647 bfd_boolean ret = TRUE;
648 bfd *dynobj;
649 Elf_Internal_Shdr *symtab_hdr;
650 struct elf_link_hash_entry **sym_hashes;
651 const Elf_Internal_Rela *rel;
652 const Elf_Internal_Rela *rel_end;
653 asection *sreloc;
654 enum v850_reloc_type r_type;
655 int other = 0;
656 const char *common = (const char *)0;
657
658 if (info->relocateable)
659 return TRUE;
660
661#ifdef DEBUG
662 fprintf (stderr, "v850_elf_check_relocs called for section %s in %s\n",
663 bfd_get_section_name (abfd, sec),
664 bfd_archive_filename (abfd));
665#endif
666
667 dynobj = elf_hash_table (info)->dynobj;
668 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
669 sym_hashes = elf_sym_hashes (abfd);
670 sreloc = NULL;
671
672 rel_end = relocs + sec->reloc_count;
673 for (rel = relocs; rel < rel_end; rel++)
674 {
675 unsigned long r_symndx;
676 struct elf_link_hash_entry *h;
677
678 r_symndx = ELF32_R_SYM (rel->r_info);
679 if (r_symndx < symtab_hdr->sh_info)
680 h = NULL;
681 else
682 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
683
684 r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info);
685 switch (r_type)
686 {
687 default:
688 case R_V850_NONE:
689 case R_V850_9_PCREL:
690 case R_V850_22_PCREL:
691 case R_V850_HI16_S:
692 case R_V850_HI16:
693 case R_V850_LO16:
694 case R_V850_ABS32:
695 case R_V850_REL32:
696 case R_V850_16:
697 case R_V850_8:
698 case R_V850_CALLT_6_7_OFFSET:
699 case R_V850_CALLT_16_16_OFFSET:
700 break;
701
702 /* This relocation describes the C++ object vtable hierarchy.
703 Reconstruct it for later use during GC. */
704 case R_V850_GNU_VTINHERIT:
705 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
706 return FALSE;
707 break;
708
709 /* This relocation describes which C++ vtable entries
710 are actually used. Record for later use during GC. */
711 case R_V850_GNU_VTENTRY:
712 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
713 return FALSE;
714 break;
715
716 case R_V850_SDA_16_16_SPLIT_OFFSET:
717 case R_V850_SDA_16_16_OFFSET:
718 case R_V850_SDA_15_16_OFFSET:
719 other = V850_OTHER_SDA;
720 common = ".scommon";
721 goto small_data_common;
722
723 case R_V850_ZDA_16_16_SPLIT_OFFSET:
724 case R_V850_ZDA_16_16_OFFSET:
725 case R_V850_ZDA_15_16_OFFSET:
726 other = V850_OTHER_ZDA;
727 common = ".zcommon";
728 goto small_data_common;
729
730 case R_V850_TDA_4_5_OFFSET:
731 case R_V850_TDA_4_4_OFFSET:
732 case R_V850_TDA_6_8_OFFSET:
733 case R_V850_TDA_7_8_OFFSET:
734 case R_V850_TDA_7_7_OFFSET:
735 case R_V850_TDA_16_16_OFFSET:
736 other = V850_OTHER_TDA;
737 common = ".tcommon";
738 /* fall through */
739
740#define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA)
741
742 small_data_common:
743 if (h)
744 {
745 /* Flag which type of relocation was used. */
746 h->other |= other;
747 if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK)
748 && (h->other & V850_OTHER_ERROR) == 0)
749 {
750 const char * msg;
751 static char buff[200]; /* XXX */
752
753 switch (h->other & V850_OTHER_MASK)
754 {
755 default:
756 msg = _("Variable `%s' cannot occupy in multiple small data regions");
757 break;
758 case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA:
759 msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions");
760 break;
761 case V850_OTHER_SDA | V850_OTHER_ZDA:
762 msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously");
763 break;
764 case V850_OTHER_SDA | V850_OTHER_TDA:
765 msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously");
766 break;
767 case V850_OTHER_ZDA | V850_OTHER_TDA:
768 msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously");
769 break;
770 }
771
772 sprintf (buff, msg, h->root.root.string);
773 info->callbacks->warning (info, buff, h->root.root.string,
774 abfd, h->root.u.def.section,
775 (bfd_vma) 0);
776
777 bfd_set_error (bfd_error_bad_value);
778 h->other |= V850_OTHER_ERROR;
779 ret = FALSE;
780 }
781 }
782
783 if (h && h->root.type == bfd_link_hash_common
784 && h->root.u.c.p
785 && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON"))
786 {
787 asection * section;
788
789 section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common);
790 section->flags |= SEC_IS_COMMON;
791 }
792
793#ifdef DEBUG
794 fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n",
795 v850_elf_howto_table[ (int)r_type ].name,
796 (h && h->root.root.string) ? h->root.root.string : "<unknown>",
797 (h->root.type == bfd_link_hash_common) ? ", symbol is common" : "");
798#endif
799 break;
800 }
801 }
802
803 return ret;
804}
805
806/* In the old version, when an entry was checked out from the table,
807 it was deleted. This produced an error if the entry was needed
808 more than once, as the second attempted retry failed.
809
810 In the current version, the entry is not deleted, instead we set
811 the field 'found' to TRUE. If a second lookup matches the same
812 entry, then we know that the hi16s reloc has already been updated
813 and does not need to be updated a second time.
814
815 TODO - TOFIX: If it is possible that we need to restore 2 different
816 addresses from the same table entry, where the first generates an
817 overflow, whilst the second do not, then this code will fail. */
818
819typedef struct hi16s_location
820{
821 bfd_vma addend;
822 bfd_byte *address;
823 unsigned long counter;
824 bfd_boolean found;
825 struct hi16s_location *next;
826}
827hi16s_location;
828
829static hi16s_location *previous_hi16s;
830static hi16s_location *free_hi16s;
831static unsigned long hi16s_counter;
832
833static void
834remember_hi16s_reloc (abfd, addend, address)
835 bfd *abfd;
836 bfd_vma addend;
837 bfd_byte *address;
838{
839 hi16s_location * entry = NULL;
840 bfd_size_type amt = sizeof (* free_hi16s);
841
842 /* Find a free structure. */
843 if (free_hi16s == NULL)
844 free_hi16s = (hi16s_location *) bfd_zalloc (abfd, amt);
845
846 entry = free_hi16s;
847 free_hi16s = free_hi16s->next;
848
849 entry->addend = addend;
850 entry->address = address;
851 entry->counter = hi16s_counter ++;
852 entry->found = FALSE;
853 entry->next = previous_hi16s;
854 previous_hi16s = entry;
855
856 /* Cope with wrap around of our counter. */
857 if (hi16s_counter == 0)
858 {
859 /* XXX - Assume that all counter entries differ only in their low 16 bits. */
860 for (entry = previous_hi16s; entry != NULL; entry = entry->next)
861 entry->counter &= 0xffff;
862
863 hi16s_counter = 0x10000;
864 }
865
866 return;
867}
868
869static bfd_byte *
870find_remembered_hi16s_reloc (addend, already_found)
871 bfd_vma addend;
872 bfd_boolean *already_found;
873{
874 hi16s_location *match = NULL;
875 hi16s_location *entry;
876 hi16s_location *previous = NULL;
877 hi16s_location *prev;
878 bfd_byte *addr;
879
880 /* Search the table. Record the most recent entry that matches. */
881 for (entry = previous_hi16s; entry; entry = entry->next)
882 {
883 if (entry->addend == addend
884 && (match == NULL || match->counter < entry->counter))
885 {
886 previous = prev;
887 match = entry;
888 }
889
890 prev = entry;
891 }
892
893 if (match == NULL)
894 return NULL;
895
896 /* Extract the address. */
897 addr = match->address;
898
899 /* Remeber if this entry has already been used before. */
900 if (already_found)
901 * already_found = match->found;
902
903 /* Note that this entry has now been used. */
904 match->found = TRUE;
905
906 return addr;
907}
908
909/* FIXME: The code here probably ought to be removed and the code in reloc.c
910 allowed to do its stuff instead. At least for most of the relocs, anwyay. */
911
912static bfd_reloc_status_type
913v850_elf_perform_relocation (abfd, r_type, addend, address)
914 bfd *abfd;
915 unsigned int r_type;
916 bfd_vma addend;
917 bfd_byte *address;
918{
919 unsigned long insn;
920 bfd_signed_vma saddend = (bfd_signed_vma) addend;
921
922 switch (r_type)
923 {
924 default:
925 /* fprintf (stderr, "reloc type %d not SUPPORTED\n", r_type ); */
926 return bfd_reloc_notsupported;
927
928 case R_V850_REL32:
929 case R_V850_ABS32:
930 bfd_put_32 (abfd, addend, address);
931 return bfd_reloc_ok;
932
933 case R_V850_22_PCREL:
934 if (saddend > 0x1fffff || saddend < -0x200000)
935 return bfd_reloc_overflow;
936
937 if ((addend % 2) != 0)
938 return bfd_reloc_dangerous;
939
940 insn = bfd_get_32 (abfd, address);
941 insn &= ~0xfffe003f;
942 insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16));
943 bfd_put_32 (abfd, (bfd_vma) insn, address);
944 return bfd_reloc_ok;
945
946 case R_V850_9_PCREL:
947 if (saddend > 0xff || saddend < -0x100)
948 return bfd_reloc_overflow;
949
950 if ((addend % 2) != 0)
951 return bfd_reloc_dangerous;
952
953 insn = bfd_get_16 (abfd, address);
954 insn &= ~ 0xf870;
955 insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3);
956 break;
957
958 case R_V850_HI16:
959 addend += (bfd_get_16 (abfd, address) << 16);
960 addend = (addend >> 16);
961 insn = addend;
962 break;
963
964 case R_V850_HI16_S:
965 /* Remember where this relocation took place. */
966 remember_hi16s_reloc (abfd, addend, address);
967
968 addend += (bfd_get_16 (abfd, address) << 16);
969 addend = (addend >> 16) + ((addend & 0x8000) != 0);
970
971 /* This relocation cannot overflow. */
972 if (addend > 0x7fff)
973 addend = 0;
974
975 insn = addend;
976 break;
977
978 case R_V850_LO16:
979 /* Calculate the sum of the value stored in the instruction and the
980 addend and check for overflow from the low 16 bits into the high
981 16 bits. The assembler has already done some of this: If the
982 value stored in the instruction has its 15th bit set, (counting
983 from zero) then the assembler will have added 1 to the value
984 stored in the associated HI16S reloc. So for example, these
985 relocations:
986
987 movhi hi( fred ), r0, r1
988 movea lo( fred ), r1, r1
989
990 will store 0 in the value fields for the MOVHI and MOVEA instructions
991 and addend will be the address of fred, but for these instructions:
992
993 movhi hi( fred + 0x123456), r0, r1
994 movea lo( fred + 0x123456), r1, r1
995
996 the value stored in the MOVHI instruction will be 0x12 and the value
997 stored in the MOVEA instruction will be 0x3456. If however the
998 instructions were:
999
1000 movhi hi( fred + 0x10ffff), r0, r1
1001 movea lo( fred + 0x10ffff), r1, r1
1002
1003 then the value stored in the MOVHI instruction would be 0x11 (not
1004 0x10) and the value stored in the MOVEA instruction would be 0xffff.
1005 Thus (assuming for the moment that the addend is 0), at run time the
1006 MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction
1007 adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if
1008 the instructions were:
1009
1010 movhi hi( fred - 1), r0, r1
1011 movea lo( fred - 1), r1, r1
1012
1013 then 0 is stored in the MOVHI instruction and -1 is stored in the
1014 MOVEA instruction.
1015
1016 Overflow can occur if the addition of the value stored in the
1017 instruction plus the addend sets the 15th bit when before it was clear.
1018 This is because the 15th bit will be sign extended into the high part,
1019 thus reducing its value by one, but since the 15th bit was originally
1020 clear, the assembler will not have added 1 to the previous HI16S reloc
1021 to compensate for this effect. For example:
1022
1023 movhi hi( fred + 0x123456), r0, r1
1024 movea lo( fred + 0x123456), r1, r1
1025
1026 The value stored in HI16S reloc is 0x12, the value stored in the LO16
1027 reloc is 0x3456. If we assume that the address of fred is 0x00007000
1028 then the relocations become:
1029
1030 HI16S: 0x0012 + (0x00007000 >> 16) = 0x12
1031 LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456
1032
1033 but when the instructions are executed, the MOVEA instruction's value
1034 is signed extended, so the sum becomes:
1035
1036 0x00120000
1037 + 0xffffa456
1038 ------------
1039 0x0011a456 but 'fred + 0x123456' = 0x0012a456
1040
1041 Note that if the 15th bit was set in the value stored in the LO16
1042 reloc, then we do not have to do anything:
1043
1044 movhi hi( fred + 0x10ffff), r0, r1
1045 movea lo( fred + 0x10ffff), r1, r1
1046
1047 HI16S: 0x0011 + (0x00007000 >> 16) = 0x11
1048 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff
1049
1050 0x00110000
1051 + 0x00006fff
1052 ------------
1053 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff
1054
1055 Overflow can also occur if the computation carries into the 16th bit
1056 and it also results in the 15th bit having the same value as the 15th
1057 bit of the original value. What happens is that the HI16S reloc
1058 will have already examined the 15th bit of the original value and
1059 added 1 to the high part if the bit is set. This compensates for the
1060 sign extension of 15th bit of the result of the computation. But now
1061 there is a carry into the 16th bit, and this has not been allowed for.
1062
1063 So, for example if fred is at address 0xf000:
1064
1065 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
1066 movea lo( fred + 0xffff), r1, r1
1067
1068 HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001
1069 LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost)
1070
1071 0x00010000
1072 + 0xffffefff
1073 ------------
1074 0x0000efff but 'fred + 0xffff' = 0x0001efff
1075
1076 Similarly, if the 15th bit remains clear, but overflow occurs into
1077 the 16th bit then (assuming the address of fred is 0xf000):
1078
1079 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
1080 movea lo( fred + 0x7000), r1, r1
1081
1082 HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000
1083 LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
1084
1085 0x00000000
1086 + 0x00006fff
1087 ------------
1088 0x00006fff but 'fred + 0x7000' = 0x00016fff
1089
1090 Note - there is no need to change anything if a carry occurs, and the
1091 15th bit changes its value from being set to being clear, as the HI16S
1092 reloc will have already added in 1 to the high part for us:
1093
1094 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
1095 movea lo( fred + 0xffff), r1, r1
1096
1097 HI16S: 0x0001 + (0x00007000 >> 16)
1098 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
1099
1100 0x00010000
1101 + 0x00006fff (bit 15 not set, so the top half is zero)
1102 ------------
1103 0x00016fff which is right (assuming that fred is at 0x7000)
1104
1105 but if the 15th bit goes from being clear to being set, then we must
1106 once again handle overflow:
1107
1108 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
1109 movea lo( fred + 0x7000), r1, r1
1110
1111 HI16S: 0x0000 + (0x0000ffff >> 16)
1112 LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16)
1113
1114 0x00000000
1115 + 0x00006fff (bit 15 not set, so the top half is zero)
1116 ------------
1117 0x00006fff which is wrong (assuming that fred is at 0xffff). */
1118 {
1119 long result;
1120
1121 insn = bfd_get_16 (abfd, address);
1122 result = insn + addend;
1123
1124#define BIT15_SET(x) ((x) & 0x8000)
1125#define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff)
1126
1127 if ((BIT15_SET (result) && ! BIT15_SET (addend))
1128 || (OVERFLOWS (addend, insn)
1129 && ((! BIT15_SET (insn)) || (BIT15_SET (addend)))))
1130 {
1131 bfd_boolean already_updated;
1132 bfd_byte *hi16s_address = find_remembered_hi16s_reloc
1133 (addend, & already_updated);
1134
1135 /* Amend the matching HI16_S relocation. */
1136 if (hi16s_address != NULL)
1137 {
1138 if (! already_updated)
1139 {
1140 insn = bfd_get_16 (abfd, hi16s_address);
1141 insn += 1;
1142 bfd_put_16 (abfd, (bfd_vma) insn, hi16s_address);
1143 }
1144 }
1145 else
1146 {
1147 fprintf (stderr, _("FAILED to find previous HI16 reloc\n"));
1148 return bfd_reloc_overflow;
1149 }
1150 }
1151
1152 /* Do not complain if value has top bit set, as this has been anticipated. */
1153 insn = result & 0xffff;
1154 break;
1155 }
1156
1157 case R_V850_8:
1158 addend += (char) bfd_get_8 (abfd, address);
1159
1160 saddend = (bfd_signed_vma) addend;
1161
1162 if (saddend > 0x7f || saddend < -0x80)
1163 return bfd_reloc_overflow;
1164
1165 bfd_put_8 (abfd, addend, address);
1166 return bfd_reloc_ok;
1167
1168 case R_V850_CALLT_16_16_OFFSET:
1169 addend += bfd_get_16 (abfd, address);
1170
1171 saddend = (bfd_signed_vma) addend;
1172
1173 if (saddend > 0xffff || saddend < 0)
1174 return bfd_reloc_overflow;
1175
1176 insn = addend;
1177 break;
1178
1179 case R_V850_16:
1180
1181 /* drop through */
1182 case R_V850_SDA_16_16_OFFSET:
1183 case R_V850_ZDA_16_16_OFFSET:
1184 case R_V850_TDA_16_16_OFFSET:
1185 addend += bfd_get_16 (abfd, address);
1186
1187 saddend = (bfd_signed_vma) addend;
1188
1189 if (saddend > 0x7fff || saddend < -0x8000)
1190 return bfd_reloc_overflow;
1191
1192 insn = addend;
1193 break;
1194
1195 case R_V850_SDA_15_16_OFFSET:
1196 case R_V850_ZDA_15_16_OFFSET:
1197 insn = bfd_get_16 (abfd, address);
1198 addend += (insn & 0xfffe);
1199
1200 saddend = (bfd_signed_vma) addend;
1201
1202 if (saddend > 0x7ffe || saddend < -0x8000)
1203 return bfd_reloc_overflow;
1204
1205 if (addend & 1)
1206 return bfd_reloc_dangerous;
1207
1208 insn = (addend &~ (bfd_vma) 1) | (insn & 1);
1209 break;
1210
1211 case R_V850_TDA_6_8_OFFSET:
1212 insn = bfd_get_16 (abfd, address);
1213 addend += ((insn & 0x7e) << 1);
1214
1215 saddend = (bfd_signed_vma) addend;
1216
1217 if (saddend > 0xfc || saddend < 0)
1218 return bfd_reloc_overflow;
1219
1220 if (addend & 3)
1221 return bfd_reloc_dangerous;
1222
1223 insn &= 0xff81;
1224 insn |= (addend >> 1);
1225 break;
1226
1227 case R_V850_TDA_7_8_OFFSET:
1228 insn = bfd_get_16 (abfd, address);
1229 addend += ((insn & 0x7f) << 1);
1230
1231 saddend = (bfd_signed_vma) addend;
1232
1233 if (saddend > 0xfe || saddend < 0)
1234 return bfd_reloc_overflow;
1235
1236 if (addend & 1)
1237 return bfd_reloc_dangerous;
1238
1239 insn &= 0xff80;
1240 insn |= (addend >> 1);
1241 break;
1242
1243 case R_V850_TDA_7_7_OFFSET:
1244 insn = bfd_get_16 (abfd, address);
1245 addend += insn & 0x7f;
1246
1247 saddend = (bfd_signed_vma) addend;
1248
1249 if (saddend > 0x7f || saddend < 0)
1250 return bfd_reloc_overflow;
1251
1252 insn &= 0xff80;
1253 insn |= addend;
1254 break;
1255
1256 case R_V850_TDA_4_5_OFFSET:
1257 insn = bfd_get_16 (abfd, address);
1258 addend += ((insn & 0xf) << 1);
1259
1260 saddend = (bfd_signed_vma) addend;
1261
1262 if (saddend > 0x1e || saddend < 0)
1263 return bfd_reloc_overflow;
1264
1265 if (addend & 1)
1266 return bfd_reloc_dangerous;
1267
1268 insn &= 0xfff0;
1269 insn |= (addend >> 1);
1270 break;
1271
1272 case R_V850_TDA_4_4_OFFSET:
1273 insn = bfd_get_16 (abfd, address);
1274 addend += insn & 0xf;
1275
1276 saddend = (bfd_signed_vma) addend;
1277
1278 if (saddend > 0xf || saddend < 0)
1279 return bfd_reloc_overflow;
1280
1281 insn &= 0xfff0;
1282 insn |= addend;
1283 break;
1284
1285 case R_V850_ZDA_16_16_SPLIT_OFFSET:
1286 case R_V850_SDA_16_16_SPLIT_OFFSET:
1287 insn = bfd_get_32 (abfd, address);
1288 addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5);
1289
1290 saddend = (bfd_signed_vma) addend;
1291
1292 if (saddend > 0x7fff || saddend < -0x8000)
1293 return bfd_reloc_overflow;
1294
1295 insn &= 0x0001ffdf;
1296 insn |= (addend & 1) << 5;
1297 insn |= (addend &~ (bfd_vma) 1) << 16;
1298
1299 bfd_put_32 (abfd, (bfd_vma) insn, address);
1300 return bfd_reloc_ok;
1301
1302 case R_V850_CALLT_6_7_OFFSET:
1303 insn = bfd_get_16 (abfd, address);
1304 addend += ((insn & 0x3f) << 1);
1305
1306 saddend = (bfd_signed_vma) addend;
1307
1308 if (saddend > 0x7e || saddend < 0)
1309 return bfd_reloc_overflow;
1310
1311 if (addend & 1)
1312 return bfd_reloc_dangerous;
1313
1314 insn &= 0xff80;
1315 insn |= (addend >> 1);
1316 break;
1317
1318 case R_V850_GNU_VTINHERIT:
1319 case R_V850_GNU_VTENTRY:
1320 return bfd_reloc_ok;
1321
1322 }
1323
1324 bfd_put_16 (abfd, (bfd_vma) insn, address);
1325 return bfd_reloc_ok;
1326}
1327
1328
1329/* Insert the addend into the instruction. */
1330
1331static bfd_reloc_status_type
1332v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err)
1333 bfd *abfd ATTRIBUTE_UNUSED;
1334 arelent *reloc;
1335 asymbol *symbol;
1336 PTR data ATTRIBUTE_UNUSED;
1337 asection *isection;
1338 bfd *obfd;
1339 char **err ATTRIBUTE_UNUSED;
1340{
1341 long relocation;
1342
1343 /* If there is an output BFD,
1344 and the symbol is not a section name (which is only defined at final link time),
1345 and either we are not putting the addend into the instruction
1346 or the addend is zero, so there is nothing to add into the instruction
1347 then just fixup the address and return. */
1348 if (obfd != (bfd *) NULL
1349 && (symbol->flags & BSF_SECTION_SYM) == 0
1350 && (! reloc->howto->partial_inplace
1351 || reloc->addend == 0))
1352 {
1353 reloc->address += isection->output_offset;
1354 return bfd_reloc_ok;
1355 }
1356
1357 /* Catch relocs involving undefined symbols. */
1358 if (bfd_is_und_section (symbol->section)
1359 && (symbol->flags & BSF_WEAK) == 0
1360 && obfd == NULL)
1361 return bfd_reloc_undefined;
1362
1363 /* We handle final linking of some relocs ourselves. */
1364
1365 /* Is the address of the relocation really within the section? */
1366 if (reloc->address > isection->_cooked_size)
1367 return bfd_reloc_outofrange;
1368
1369 /* Work out which section the relocation is targetted at and the
1370 initial relocation command value. */
1371
1372 if (reloc->howto->pc_relative)
1373 return bfd_reloc_ok;
1374
1375 /* Get symbol value. (Common symbols are special.) */
1376 if (bfd_is_com_section (symbol->section))
1377 relocation = 0;
1378 else
1379 relocation = symbol->value;
1380
1381 /* Convert input-section-relative symbol value to absolute + addend. */
1382 relocation += symbol->section->output_section->vma;
1383 relocation += symbol->section->output_offset;
1384 relocation += reloc->addend;
1385
1386#if 0 /* Since this reloc is going to be processed later on, we should
1387 not make it pc-relative here. To test this, try assembling and
1388 linking this program:
1389
1390 .text
1391 .globl _start
1392 nop
1393 _start:
1394 jr foo
1395
1396 .section ".foo","ax"
1397 nop
1398 foo:
1399 nop */
1400 if (reloc->howto->pc_relative)
1401 {
1402 /* Here the variable relocation holds the final address of the
1403 symbol we are relocating against, plus any addend. */
1404 relocation -= isection->output_section->vma + isection->output_offset;
1405
1406 /* Deal with pcrel_offset. */
1407 relocation -= reloc->address;
1408 }
1409#endif
1410 reloc->addend = relocation;
1411 return bfd_reloc_ok;
1412}
1413
1414/* This function is used for relocs which are only used
1415 for relaxing, which the linker should otherwise ignore. */
1416
1417static bfd_reloc_status_type
1418v850_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section,
1419 output_bfd, error_message)
1420 bfd *abfd ATTRIBUTE_UNUSED;
1421 arelent *reloc_entry;
1422 asymbol *symbol ATTRIBUTE_UNUSED;
1423 PTR data ATTRIBUTE_UNUSED;
1424 asection *input_section;
1425 bfd *output_bfd;
1426 char **error_message ATTRIBUTE_UNUSED;
1427{
1428 if (output_bfd != NULL)
1429 reloc_entry->address += input_section->output_offset;
1430
1431 return bfd_reloc_ok;
1432}
1433
1434
1435static bfd_boolean
1436v850_elf_is_local_label_name (abfd, name)
1437 bfd *abfd ATTRIBUTE_UNUSED;
1438 const char *name;
1439{
1440 return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
1441 || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_'));
1442}
1443
1444
1445/* We overload some of the bfd_reloc error codes for own purposes. */
1446#define bfd_reloc_gp_not_found bfd_reloc_other
1447#define bfd_reloc_ep_not_found bfd_reloc_continue
1448#define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1)
1449
1450/* Perform a relocation as part of a final link. */
1451
1452static bfd_reloc_status_type
1453v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
1454 input_section, contents, offset, value,
1455 addend, info, sym_sec, is_local)
1456 reloc_howto_type *howto;
1457 bfd *input_bfd;
1458 bfd *output_bfd ATTRIBUTE_UNUSED;
1459 asection *input_section;
1460 bfd_byte *contents;
1461 bfd_vma offset;
1462 bfd_vma value;
1463 bfd_vma addend;
1464 struct bfd_link_info *info;
1465 asection *sym_sec;
1466 int is_local ATTRIBUTE_UNUSED;
1467{
1468 unsigned int r_type = howto->type;
1469 bfd_byte *hit_data = contents + offset;
1470
1471 /* Adjust the value according to the relocation. */
1472 switch (r_type)
1473 {
1474 case R_V850_9_PCREL:
1475 value -= (input_section->output_section->vma
1476 + input_section->output_offset);
1477 value -= offset;
1478 break;
1479
1480 case R_V850_22_PCREL:
1481 value -= (input_section->output_section->vma
1482 + input_section->output_offset
1483 + offset);
1484
1485 /* If the sign extension will corrupt the value then we have overflowed. */
1486 if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000))
1487 return bfd_reloc_overflow;
1488
1489 /* Only the bottom 24 bits of the PC are valid */
1490 value = SEXT24 (value);
1491 break;
1492
1493 case R_V850_REL32:
1494 value -= (input_section->output_section->vma
1495 + input_section->output_offset
1496 + offset);
1497 break;
1498
1499 case R_V850_HI16_S:
1500 case R_V850_HI16:
1501 case R_V850_LO16:
1502 case R_V850_16:
1503 case R_V850_ABS32:
1504 case R_V850_8:
1505 break;
1506
1507 case R_V850_ZDA_15_16_OFFSET:
1508 case R_V850_ZDA_16_16_OFFSET:
1509 case R_V850_ZDA_16_16_SPLIT_OFFSET:
1510 if (sym_sec == NULL)
1511 return bfd_reloc_undefined;
1512
1513 value -= sym_sec->output_section->vma;
1514 break;
1515
1516 case R_V850_SDA_15_16_OFFSET:
1517 case R_V850_SDA_16_16_OFFSET:
1518 case R_V850_SDA_16_16_SPLIT_OFFSET:
1519 {
1520 unsigned long gp;
1521 struct bfd_link_hash_entry * h;
1522
1523 if (sym_sec == NULL)
1524 return bfd_reloc_undefined;
1525
1526 /* Get the value of __gp. */
1527 h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE);
1528 if (h == (struct bfd_link_hash_entry *) NULL
1529 || h->type != bfd_link_hash_defined)
1530 return bfd_reloc_gp_not_found;
1531
1532 gp = (h->u.def.value
1533 + h->u.def.section->output_section->vma
1534 + h->u.def.section->output_offset);
1535
1536 value -= sym_sec->output_section->vma;
1537 value -= (gp - sym_sec->output_section->vma);
1538 }
1539 break;
1540
1541 case R_V850_TDA_4_4_OFFSET:
1542 case R_V850_TDA_4_5_OFFSET:
1543 case R_V850_TDA_16_16_OFFSET:
1544 case R_V850_TDA_7_7_OFFSET:
1545 case R_V850_TDA_7_8_OFFSET:
1546 case R_V850_TDA_6_8_OFFSET:
1547 {
1548 unsigned long ep;
1549 struct bfd_link_hash_entry * h;
1550
1551 /* Get the value of __ep. */
1552 h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE);
1553 if (h == (struct bfd_link_hash_entry *) NULL
1554 || h->type != bfd_link_hash_defined)
1555 return bfd_reloc_ep_not_found;
1556
1557 ep = (h->u.def.value
1558 + h->u.def.section->output_section->vma
1559 + h->u.def.section->output_offset);
1560
1561 value -= ep;
1562 }
1563 break;
1564
1565 case R_V850_CALLT_6_7_OFFSET:
1566 {
1567 unsigned long ctbp;
1568 struct bfd_link_hash_entry * h;
1569
1570 /* Get the value of __ctbp. */
1571 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
1572 if (h == (struct bfd_link_hash_entry *) NULL
1573 || h->type != bfd_link_hash_defined)
1574 return bfd_reloc_ctbp_not_found;
1575
1576 ctbp = (h->u.def.value
1577 + h->u.def.section->output_section->vma
1578 + h->u.def.section->output_offset);
1579 value -= ctbp;
1580 }
1581 break;
1582
1583 case R_V850_CALLT_16_16_OFFSET:
1584 {
1585 unsigned long ctbp;
1586 struct bfd_link_hash_entry * h;
1587
1588 if (sym_sec == NULL)
1589 return bfd_reloc_undefined;
1590
1591 /* Get the value of __ctbp. */
1592 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
1593 if (h == (struct bfd_link_hash_entry *) NULL
1594 || h->type != bfd_link_hash_defined)
1595 return bfd_reloc_ctbp_not_found;
1596
1597 ctbp = (h->u.def.value
1598 + h->u.def.section->output_section->vma
1599 + h->u.def.section->output_offset);
1600
1601 value -= sym_sec->output_section->vma;
1602 value -= (ctbp - sym_sec->output_section->vma);
1603 }
1604 break;
1605
1606 case R_V850_NONE:
1607 case R_V850_GNU_VTINHERIT:
1608 case R_V850_GNU_VTENTRY:
1609 case R_V850_LONGCALL:
1610 case R_V850_LONGJUMP:
1611 case R_V850_ALIGN:
1612 return bfd_reloc_ok;
1613
1614 default:
1615 return bfd_reloc_notsupported;
1616 }
1617
1618 /* Perform the relocation. */
1619 return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
1620}
1621
1622
1623/* Relocate an V850 ELF section. */
1624
1625static bfd_boolean
1626v850_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1627 contents, relocs, local_syms, local_sections)
1628 bfd *output_bfd;
1629 struct bfd_link_info *info;
1630 bfd *input_bfd;
1631 asection *input_section;
1632 bfd_byte *contents;
1633 Elf_Internal_Rela *relocs;
1634 Elf_Internal_Sym *local_syms;
1635 asection **local_sections;
1636{
1637 Elf_Internal_Shdr *symtab_hdr;
1638 struct elf_link_hash_entry **sym_hashes;
1639 Elf_Internal_Rela *rel;
1640 Elf_Internal_Rela *relend;
1641
1642 if (info->relocateable)
1643 return TRUE;
1644
1645 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1646 sym_hashes = elf_sym_hashes (input_bfd);
1647
1648 if (sym_hashes == NULL)
1649 {
1650 info->callbacks->warning
1651 (info, "no hash table available",
1652 NULL, input_bfd, input_section, (bfd_vma) 0);
1653
1654 return FALSE;
1655 }
1656
1657 /* Reset the list of remembered HI16S relocs to empty. */
1658 free_hi16s = previous_hi16s;
1659 previous_hi16s = NULL;
1660 hi16s_counter = 0;
1661
1662 rel = relocs;
1663 relend = relocs + input_section->reloc_count;
1664 for (; rel < relend; rel++)
1665 {
1666 int r_type;
1667 reloc_howto_type *howto;
1668 unsigned long r_symndx;
1669 Elf_Internal_Sym *sym;
1670 asection *sec;
1671 struct elf_link_hash_entry *h;
1672 bfd_vma relocation;
1673 bfd_reloc_status_type r;
1674
1675 r_symndx = ELF32_R_SYM (rel->r_info);
1676 r_type = ELF32_R_TYPE (rel->r_info);
1677
1678 if (r_type == R_V850_GNU_VTENTRY
1679 || r_type == R_V850_GNU_VTINHERIT)
1680 continue;
1681
1682 /* This is a final link. */
1683 howto = v850_elf_howto_table + r_type;
1684 h = NULL;
1685 sym = NULL;
1686 sec = NULL;
1687 if (r_symndx < symtab_hdr->sh_info)
1688 {
1689 sym = local_syms + r_symndx;
1690 sec = local_sections[r_symndx];
1691 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
1692#if 0
1693 {
1694 char * name;
1695
1696 name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name);
1697 name = (name == NULL) ? "<none>" : name;
1698 fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
1699 sec->name, name, sym->st_name,
1700 sec->output_section->vma, sec->output_offset, sym->st_value, rel->r_addend);
1701 }
1702#endif
1703 }
1704 else
1705 {
1706 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1707
1708 while (h->root.type == bfd_link_hash_indirect
1709 || h->root.type == bfd_link_hash_warning)
1710 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1711
1712 if (h->root.type == bfd_link_hash_defined
1713 || h->root.type == bfd_link_hash_defweak)
1714 {
1715 sec = h->root.u.def.section;
1716 relocation = (h->root.u.def.value
1717 + sec->output_section->vma
1718 + sec->output_offset);
1719#if 0
1720 fprintf (stderr, "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n",
1721 sec->name, h->root.root.string, h->root.u.def.value, sec->output_section->vma, sec->output_offset, relocation);
1722#endif
1723 }
1724 else if (h->root.type == bfd_link_hash_undefweak)
1725 {
1726#if 0
1727 fprintf (stderr, "undefined: sec: %s, name: %s\n",
1728 sec->name, h->root.root.string);
1729#endif
1730 relocation = 0;
1731 }
1732 else
1733 {
1734 if (! ((*info->callbacks->undefined_symbol)
1735 (info, h->root.root.string, input_bfd,
1736 input_section, rel->r_offset, TRUE)))
1737 return FALSE;
1738#if 0
1739 fprintf (stderr, "unknown: name: %s\n", h->root.root.string);
1740#endif
1741 relocation = 0;
1742 }
1743 }
1744
1745 /* FIXME: We should use the addend, but the COFF relocations don't. */
1746 r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
1747 input_section,
1748 contents, rel->r_offset,
1749 relocation, rel->r_addend,
1750 info, sec, h == NULL);
1751
1752 if (r != bfd_reloc_ok)
1753 {
1754 const char * name;
1755 const char * msg = (const char *)0;
1756
1757 if (h != NULL)
1758 name = h->root.root.string;
1759 else
1760 {
1761 name = (bfd_elf_string_from_elf_section
1762 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1763 if (name == NULL || *name == '\0')
1764 name = bfd_section_name (input_bfd, sec);
1765 }
1766
1767 switch (r)
1768 {
1769 case bfd_reloc_overflow:
1770 if (! ((*info->callbacks->reloc_overflow)
1771 (info, name, howto->name, (bfd_vma) 0,
1772 input_bfd, input_section, rel->r_offset)))
1773 return FALSE;
1774 break;
1775
1776 case bfd_reloc_undefined:
1777 if (! ((*info->callbacks->undefined_symbol)
1778 (info, name, input_bfd, input_section,
1779 rel->r_offset, TRUE)))
1780 return FALSE;
1781 break;
1782
1783 case bfd_reloc_outofrange:
1784 msg = _("internal error: out of range error");
1785 goto common_error;
1786
1787 case bfd_reloc_notsupported:
1788 msg = _("internal error: unsupported relocation error");
1789 goto common_error;
1790
1791 case bfd_reloc_dangerous:
1792 msg = _("internal error: dangerous relocation");
1793 goto common_error;
1794
1795 case bfd_reloc_gp_not_found:
1796 msg = _("could not locate special linker symbol __gp");
1797 goto common_error;
1798
1799 case bfd_reloc_ep_not_found:
1800 msg = _("could not locate special linker symbol __ep");
1801 goto common_error;
1802
1803 case bfd_reloc_ctbp_not_found:
1804 msg = _("could not locate special linker symbol __ctbp");
1805 goto common_error;
1806
1807 default:
1808 msg = _("internal error: unknown error");
1809 /* fall through */
1810
1811 common_error:
1812 if (!((*info->callbacks->warning)
1813 (info, msg, name, input_bfd, input_section,
1814 rel->r_offset)))
1815 return FALSE;
1816 break;
1817 }
1818 }
1819 }
1820
1821 return TRUE;
1822}
1823
1824static bfd_boolean
1825v850_elf_gc_sweep_hook (abfd, info, sec, relocs)
1826 bfd *abfd ATTRIBUTE_UNUSED;
1827 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1828 asection *sec ATTRIBUTE_UNUSED;
1829 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
1830{
1831 /* No got and plt entries for v850-elf. */
1832 return TRUE;
1833}
1834
1835static asection *
1836v850_elf_gc_mark_hook (sec, info, rel, h, sym)
1837 asection *sec;
1838 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1839 Elf_Internal_Rela *rel;
1840 struct elf_link_hash_entry *h;
1841 Elf_Internal_Sym *sym;
1842{
1843 if (h != NULL)
1844 {
1845 switch (ELF32_R_TYPE (rel->r_info))
1846 {
1847 case R_V850_GNU_VTINHERIT:
1848 case R_V850_GNU_VTENTRY:
1849 break;
1850
1851 default:
1852 switch (h->root.type)
1853 {
1854 case bfd_link_hash_defined:
1855 case bfd_link_hash_defweak:
1856 return h->root.u.def.section;
1857
1858 case bfd_link_hash_common:
1859 return h->root.u.c.p->section;
1860
1861 default:
1862 break;
1863 }
1864 }
1865 }
1866 else
1867 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1868
1869 return NULL;
1870}
1871
1872/* Set the right machine number. */
1873
1874static bfd_boolean
1875v850_elf_object_p (abfd)
1876 bfd *abfd;
1877{
1878 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1879 {
1880 default:
1881 case E_V850_ARCH:
1882 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850);
1883 break;
1884 case E_V850E_ARCH:
1885 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e);
1886 break;
1887 }
1888 return TRUE;
1889}
1890
1891/* Store the machine number in the flags field. */
1892
1893static void
1894v850_elf_final_write_processing (abfd, linker)
1895 bfd *abfd;
1896 bfd_boolean linker ATTRIBUTE_UNUSED;
1897{
1898 unsigned long val;
1899
1900 switch (bfd_get_mach (abfd))
1901 {
1902 default:
1903 case bfd_mach_v850: val = E_V850_ARCH; break;
1904 case bfd_mach_v850e: val = E_V850E_ARCH; break;
1905 }
1906
1907 elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
1908 elf_elfheader (abfd)->e_flags |= val;
1909}
1910
1911/* Function to keep V850 specific file flags. */
1912
1913static bfd_boolean
1914v850_elf_set_private_flags (abfd, flags)
1915 bfd *abfd;
1916 flagword flags;
1917{
1918 BFD_ASSERT (!elf_flags_init (abfd)
1919 || elf_elfheader (abfd)->e_flags == flags);
1920
1921 elf_elfheader (abfd)->e_flags = flags;
1922 elf_flags_init (abfd) = TRUE;
1923 return TRUE;
1924}
1925
1926/* Merge backend specific data from an object file
1927 to the output object file when linking. */
1928static bfd_boolean
1929v850_elf_merge_private_bfd_data (ibfd, obfd)
1930 bfd *ibfd;
1931 bfd *obfd;
1932{
1933 flagword out_flags;
1934 flagword in_flags;
1935
1936 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1937 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1938 return TRUE;
1939
1940 in_flags = elf_elfheader (ibfd)->e_flags;
1941 out_flags = elf_elfheader (obfd)->e_flags;
1942
1943 if (! elf_flags_init (obfd))
1944 {
1945 /* If the input is the default architecture then do not
1946 bother setting the flags for the output architecture,
1947 instead allow future merges to do this. If no future
1948 merges ever set these flags then they will retain their
1949 unitialised values, which surprise surprise, correspond
1950 to the default values. */
1951 if (bfd_get_arch_info (ibfd)->the_default)
1952 return TRUE;
1953
1954 elf_flags_init (obfd) = TRUE;
1955 elf_elfheader (obfd)->e_flags = in_flags;
1956
1957 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
1958 && bfd_get_arch_info (obfd)->the_default)
1959 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
1960
1961 return TRUE;
1962 }
1963
1964 /* Check flag compatibility. */
1965 if (in_flags == out_flags)
1966 return TRUE;
1967
1968 if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH)
1969 && (in_flags & EF_V850_ARCH) != E_V850_ARCH)
1970 _bfd_error_handler (_("%s: Architecture mismatch with previous modules"),
1971 bfd_archive_filename (ibfd));
1972
1973 return TRUE;
1974}
1975
1976/* Display the flags field. */
1977
1978static bfd_boolean
1979v850_elf_print_private_bfd_data (abfd, ptr)
1980 bfd *abfd;
1981 PTR ptr;
1982{
1983 FILE * file = (FILE *) ptr;
1984
1985 BFD_ASSERT (abfd != NULL && ptr != NULL);
1986
1987 _bfd_elf_print_private_bfd_data (abfd, ptr);
1988
1989 /* xgettext:c-format */
1990 fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
1991
1992 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1993 {
1994 default:
1995 case E_V850_ARCH: fprintf (file, _("v850 architecture")); break;
1996 case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
1997 }
1998
1999 fputc ('\n', file);
2000
2001 return TRUE;
2002}
2003
2004/* V850 ELF uses four common sections. One is the usual one, and the
2005 others are for (small) objects in one of the special data areas:
2006 small, tiny and zero. All the objects are kept together, and then
2007 referenced via the gp register, the ep register or the r0 register
2008 respectively, which yields smaller, faster assembler code. This
2009 approach is copied from elf32-mips.c. */
2010
2011static asection v850_elf_scom_section;
2012static asymbol v850_elf_scom_symbol;
2013static asymbol * v850_elf_scom_symbol_ptr;
2014static asection v850_elf_tcom_section;
2015static asymbol v850_elf_tcom_symbol;
2016static asymbol * v850_elf_tcom_symbol_ptr;
2017static asection v850_elf_zcom_section;
2018static asymbol v850_elf_zcom_symbol;
2019static asymbol * v850_elf_zcom_symbol_ptr;
2020
2021/* Given a BFD section, try to locate the
2022 corresponding ELF section index. */
2023
2024static bfd_boolean
2025v850_elf_section_from_bfd_section (abfd, sec, retval)
2026 bfd *abfd ATTRIBUTE_UNUSED;
2027 asection *sec;
2028 int *retval;
2029{
2030 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
2031 *retval = SHN_V850_SCOMMON;
2032 else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
2033 *retval = SHN_V850_TCOMMON;
2034 else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
2035 *retval = SHN_V850_ZCOMMON;
2036 else
2037 return FALSE;
2038
2039 return TRUE;
2040}
2041
2042/* Handle the special V850 section numbers that a symbol may use. */
2043
2044static void
2045v850_elf_symbol_processing (abfd, asym)
2046 bfd *abfd;
2047 asymbol *asym;
2048{
2049 elf_symbol_type * elfsym = (elf_symbol_type *) asym;
2050 unsigned int indx;
2051
2052 indx = elfsym->internal_elf_sym.st_shndx;
2053
2054 /* If the section index is an "ordinary" index, then it may
2055 refer to a v850 specific section created by the assembler.
2056 Check the section's type and change the index it matches.
2057
2058 FIXME: Should we alter the st_shndx field as well ? */
2059
2060 if (indx < elf_numsections (abfd))
2061 switch (elf_elfsections(abfd)[indx]->sh_type)
2062 {
2063 case SHT_V850_SCOMMON:
2064 indx = SHN_V850_SCOMMON;
2065 break;
2066
2067 case SHT_V850_TCOMMON:
2068 indx = SHN_V850_TCOMMON;
2069 break;
2070
2071 case SHT_V850_ZCOMMON:
2072 indx = SHN_V850_ZCOMMON;
2073 break;
2074
2075 default:
2076 break;
2077 }
2078
2079 switch (indx)
2080 {
2081 case SHN_V850_SCOMMON:
2082 if (v850_elf_scom_section.name == NULL)
2083 {
2084 /* Initialize the small common section. */
2085 v850_elf_scom_section.name = ".scommon";
2086 v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
2087 v850_elf_scom_section.output_section = & v850_elf_scom_section;
2088 v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
2089 v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
2090 v850_elf_scom_symbol.name = ".scommon";
2091 v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
2092 v850_elf_scom_symbol.section = & v850_elf_scom_section;
2093 v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
2094 }
2095 asym->section = & v850_elf_scom_section;
2096 asym->value = elfsym->internal_elf_sym.st_size;
2097 break;
2098
2099 case SHN_V850_TCOMMON:
2100 if (v850_elf_tcom_section.name == NULL)
2101 {
2102 /* Initialize the tcommon section. */
2103 v850_elf_tcom_section.name = ".tcommon";
2104 v850_elf_tcom_section.flags = SEC_IS_COMMON;
2105 v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
2106 v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
2107 v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
2108 v850_elf_tcom_symbol.name = ".tcommon";
2109 v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
2110 v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
2111 v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
2112 }
2113 asym->section = & v850_elf_tcom_section;
2114 asym->value = elfsym->internal_elf_sym.st_size;
2115 break;
2116
2117 case SHN_V850_ZCOMMON:
2118 if (v850_elf_zcom_section.name == NULL)
2119 {
2120 /* Initialize the zcommon section. */
2121 v850_elf_zcom_section.name = ".zcommon";
2122 v850_elf_zcom_section.flags = SEC_IS_COMMON;
2123 v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
2124 v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
2125 v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
2126 v850_elf_zcom_symbol.name = ".zcommon";
2127 v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
2128 v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
2129 v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
2130 }
2131 asym->section = & v850_elf_zcom_section;
2132 asym->value = elfsym->internal_elf_sym.st_size;
2133 break;
2134 }
2135}
2136
2137/* Hook called by the linker routine which adds symbols from an object
2138 file. We must handle the special v850 section numbers here. */
2139
2140static bfd_boolean
2141v850_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2142 bfd *abfd;
2143 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2144 const Elf_Internal_Sym *sym;
2145 const char **namep ATTRIBUTE_UNUSED;
2146 flagword *flagsp ATTRIBUTE_UNUSED;
2147 asection **secp;
2148 bfd_vma *valp;
2149{
2150 unsigned int indx = sym->st_shndx;
2151
2152 /* If the section index is an "ordinary" index, then it may
2153 refer to a v850 specific section created by the assembler.
2154 Check the section's type and change the index it matches.
2155
2156 FIXME: Should we alter the st_shndx field as well ? */
2157
2158 if (indx < elf_numsections (abfd))
2159 switch (elf_elfsections(abfd)[indx]->sh_type)
2160 {
2161 case SHT_V850_SCOMMON:
2162 indx = SHN_V850_SCOMMON;
2163 break;
2164
2165 case SHT_V850_TCOMMON:
2166 indx = SHN_V850_TCOMMON;
2167 break;
2168
2169 case SHT_V850_ZCOMMON:
2170 indx = SHN_V850_ZCOMMON;
2171 break;
2172
2173 default:
2174 break;
2175 }
2176
2177 switch (indx)
2178 {
2179 case SHN_V850_SCOMMON:
2180 *secp = bfd_make_section_old_way (abfd, ".scommon");
2181 (*secp)->flags |= SEC_IS_COMMON;
2182 *valp = sym->st_size;
2183 break;
2184
2185 case SHN_V850_TCOMMON:
2186 *secp = bfd_make_section_old_way (abfd, ".tcommon");
2187 (*secp)->flags |= SEC_IS_COMMON;
2188 *valp = sym->st_size;
2189 break;
2190
2191 case SHN_V850_ZCOMMON:
2192 *secp = bfd_make_section_old_way (abfd, ".zcommon");
2193 (*secp)->flags |= SEC_IS_COMMON;
2194 *valp = sym->st_size;
2195 break;
2196 }
2197
2198 return TRUE;
2199}
2200
2201static bfd_boolean
2202v850_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
2203 bfd *abfd ATTRIBUTE_UNUSED;
2204 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2205 const char *name ATTRIBUTE_UNUSED;
2206 Elf_Internal_Sym *sym;
2207 asection *input_sec;
2208{
2209 /* If we see a common symbol, which implies a relocatable link, then
2210 if a symbol was in a special common section in an input file, mark
2211 it as a special common in the output file. */
2212
2213 if (sym->st_shndx == SHN_COMMON)
2214 {
2215 if (strcmp (input_sec->name, ".scommon") == 0)
2216 sym->st_shndx = SHN_V850_SCOMMON;
2217 else if (strcmp (input_sec->name, ".tcommon") == 0)
2218 sym->st_shndx = SHN_V850_TCOMMON;
2219 else if (strcmp (input_sec->name, ".zcommon") == 0)
2220 sym->st_shndx = SHN_V850_ZCOMMON;
2221 }
2222
2223 return TRUE;
2224}
2225
2226static bfd_boolean
2227v850_elf_section_from_shdr (abfd, hdr, name)
2228 bfd *abfd;
2229 Elf_Internal_Shdr *hdr;
2230 const char *name;
2231{
2232 /* There ought to be a place to keep ELF backend specific flags, but
2233 at the moment there isn't one. We just keep track of the
2234 sections by their name, instead. */
2235
2236 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
2237 return FALSE;
2238
2239 switch (hdr->sh_type)
2240 {
2241 case SHT_V850_SCOMMON:
2242 case SHT_V850_TCOMMON:
2243 case SHT_V850_ZCOMMON:
2244 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2245 (bfd_get_section_flags (abfd,
2246 hdr->bfd_section)
2247 | SEC_IS_COMMON)))
2248 return FALSE;
2249 }
2250
2251 return TRUE;
2252}
2253
2254/* Set the correct type for a V850 ELF section. We do this
2255 by the section name, which is a hack, but ought to work. */
2256
2257static bfd_boolean
2258v850_elf_fake_sections (abfd, hdr, sec)
2259 bfd *abfd ATTRIBUTE_UNUSED;
2260 Elf_Internal_Shdr *hdr;
2261 asection *sec;
2262{
2263 register const char * name;
2264
2265 name = bfd_get_section_name (abfd, sec);
2266
2267 if (strcmp (name, ".scommon") == 0)
2268 {
2269 hdr->sh_type = SHT_V850_SCOMMON;
2270 }
2271 else if (strcmp (name, ".tcommon") == 0)
2272 {
2273 hdr->sh_type = SHT_V850_TCOMMON;
2274 }
2275 else if (strcmp (name, ".zcommon") == 0)
2276 hdr->sh_type = SHT_V850_ZCOMMON;
2277
2278 return TRUE;
2279}
2280
2281/* Delete some bytes from a section while relaxing. */
2282
2283static bfd_boolean
2284v850_elf_relax_delete_bytes (abfd, sec, addr, toaddr, count)
2285 bfd *abfd;
2286 asection *sec;
2287 bfd_vma addr;
2288 bfd_vma toaddr;
2289 int count;
2290{
2291 Elf_Internal_Shdr *symtab_hdr;
2292 Elf32_External_Sym *extsyms;
2293 Elf32_External_Sym *esym;
2294 Elf32_External_Sym *esymend;
2295 int index;
2296 unsigned int sec_shndx;
2297 bfd_byte *contents;
2298 Elf_Internal_Rela *irel;
2299 Elf_Internal_Rela *irelend;
2300 struct elf_link_hash_entry *sym_hash;
2301 Elf_Internal_Shdr *shndx_hdr;
2302 Elf_External_Sym_Shndx *shndx;
2303
2304 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2305 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2306
2307 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2308
2309 contents = elf_section_data (sec)->this_hdr.contents;
2310
2311 /* The deletion must stop at the next ALIGN reloc for an alignment
2312 power larger than the number of bytes we are deleting. */
2313
2314 /* Actually delete the bytes. */
2315#if (DEBUG_RELAX & 2)
2316 fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n",
2317 sec->name, addr, toaddr, count );
2318#endif
2319 memmove (contents + addr, contents + addr + count,
2320 toaddr - addr - count);
2321 memset (contents + toaddr-count, 0, count);
2322
2323 /* Adjust all the relocs. */
2324 irel = elf_section_data (sec)->relocs;
2325 irelend = irel + sec->reloc_count;
2326 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2327 shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
2328
2329 for (; irel < irelend; irel++)
2330 {
2331 bfd_vma raddr, paddr, symval;
2332 Elf_Internal_Sym isym;
2333
2334 /* Get the new reloc address. */
2335 raddr = irel->r_offset;
2336 if ((raddr >= (addr + count) && raddr < toaddr))
2337 irel->r_offset -= count;
2338
2339 if (raddr >= addr && raddr < addr + count)
2340 {
2341 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2342 (int) R_V850_NONE);
2343 continue;
2344 }
2345
2346 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN)
2347 continue;
2348
2349 bfd_elf32_swap_symbol_in (abfd,
2350 extsyms + ELF32_R_SYM (irel->r_info),
2351 shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL,
2352 & isym);
2353
2354 if (isym.st_shndx != sec_shndx)
2355 continue;
2356
2357 /* Get the value of the symbol referred to by the reloc. */
2358 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2359 {
2360 symval = isym.st_value;
2361#if (DEBUG_RELAX & 2)
2362 {
2363 char * name = bfd_elf_string_from_elf_section
2364 (abfd, symtab_hdr->sh_link, isym.st_name);
2365 fprintf (stderr,
2366 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2367 sec->name, name, isym.st_name,
2368 sec->output_section->vma, sec->output_offset,
2369 isym.st_value, irel->r_addend);
2370 }
2371#endif
2372 }
2373 else
2374 {
2375 unsigned long indx;
2376 struct elf_link_hash_entry * h;
2377
2378 /* An external symbol. */
2379 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2380
2381 h = elf_sym_hashes (abfd) [indx];
2382 BFD_ASSERT (h != NULL);
2383
2384 symval = h->root.u.def.value;
2385#if (DEBUG_RELAX & 2)
2386 fprintf (stderr,
2387 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2388 sec->name, h->root.root.string, h->root.u.def.value,
2389 sec->output_section->vma, sec->output_offset, irel->r_addend);
2390#endif
2391 }
2392
2393 paddr = symval + irel->r_addend;
2394
2395 if ( (symval >= addr + count && symval < toaddr)
2396 && (paddr < addr + count || paddr >= toaddr))
2397 irel->r_addend += count;
2398 else if ( (symval < addr + count || symval >= toaddr)
2399 && (paddr >= addr + count && paddr < toaddr))
2400 irel->r_addend -= count;
2401 }
2402
2403 /* Adjust the local symbols defined in this section. */
2404 esym = extsyms;
2405 esymend = esym + symtab_hdr->sh_info;
2406
2407 for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
2408 {
2409 Elf_Internal_Sym isym;
2410
2411 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2412
2413 if (isym.st_shndx == sec_shndx
2414 && isym.st_value >= addr + count
2415 && isym.st_value < toaddr)
2416 {
2417 isym.st_value -= count;
2418
2419 if (isym.st_value + isym.st_size >= toaddr)
2420 isym.st_size += count;
2421
2422 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2423 }
2424 else if (isym.st_shndx == sec_shndx
2425 && isym.st_value < addr + count)
2426 {
2427 if (isym.st_value+isym.st_size >= addr + count
2428 && isym.st_value+isym.st_size < toaddr)
2429 isym.st_size -= count;
2430
2431 if (isym.st_value >= addr
2432 && isym.st_value < addr + count)
2433 isym.st_value = addr;
2434
2435 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2436 }
2437 }
2438
2439 /* Now adjust the global symbols defined in this section. */
2440 esym = extsyms + symtab_hdr->sh_info;
2441 esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
2442
2443 for (index = 0; esym < esymend; esym ++, index ++)
2444 {
2445 Elf_Internal_Sym isym;
2446
2447 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2448 sym_hash = elf_sym_hashes (abfd) [index];
2449
2450 if (isym.st_shndx == sec_shndx
2451 && ((sym_hash)->root.type == bfd_link_hash_defined
2452 || (sym_hash)->root.type == bfd_link_hash_defweak)
2453 && (sym_hash)->root.u.def.section == sec
2454 && (sym_hash)->root.u.def.value >= addr + count
2455 && (sym_hash)->root.u.def.value < toaddr)
2456 {
2457 if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr)
2458 {
2459 isym.st_size += count;
2460 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2461 }
2462
2463 (sym_hash)->root.u.def.value -= count;
2464 }
2465 else if (isym.st_shndx == sec_shndx
2466 && ((sym_hash)->root.type == bfd_link_hash_defined
2467 || (sym_hash)->root.type == bfd_link_hash_defweak)
2468 && (sym_hash)->root.u.def.section == sec
2469 && (sym_hash)->root.u.def.value < addr + count)
2470 {
2471 if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count
2472 && (sym_hash)->root.u.def.value+isym.st_size < toaddr)
2473 isym.st_size -= count;
2474
2475 if ((sym_hash)->root.u.def.value >= addr
2476 && (sym_hash)->root.u.def.value < addr + count)
2477 (sym_hash)->root.u.def.value = addr;
2478
2479 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2480 }
2481
2482 if (shndx)
2483 ++ shndx;
2484 }
2485
2486 return TRUE;
2487}
2488
2489#define NOP_OPCODE (0x0000)
2490#define MOVHI 0x0640 /* 4byte */
2491#define MOVHI_MASK 0x07e0
2492#define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */
2493#define MOVHI_R2(insn) ((insn) >> 11)
2494#define MOVEA 0x0620 /* 2byte */
2495#define MOVEA_MASK 0x07e0
2496#define MOVEA_R1(insn) ((insn) & 0x1f)
2497#define MOVEA_R2(insn) ((insn) >> 11)
2498#define JARL_4 0x00040780 /* 4byte */
2499#define JARL_4_MASK 0xFFFF07FF
2500#define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
2501#define ADD_I 0x0240 /* 2byte */
2502#define ADD_I_MASK 0x07e0
2503#define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */
2504#define ADD_R2(insn) ((insn) >> 11)
2505#define JMP_R 0x0060 /* 2byte */
2506#define JMP_R_MASK 0xFFE0
2507#define JMP_R1(insn) ((insn) & 0x1f)
2508
2509static bfd_boolean
2510v850_elf_relax_section (abfd, sec, link_info, again)
2511 bfd *abfd;
2512 asection *sec;
2513 struct bfd_link_info *link_info;
2514 bfd_boolean *again;
2515{
2516 Elf_Internal_Shdr *symtab_hdr;
2517 Elf_Internal_Rela *internal_relocs;
2518 Elf_Internal_Rela *irel;
2519 Elf_Internal_Rela *irelend;
2520 Elf_Internal_Rela *irelalign = NULL;
2521 Elf_Internal_Sym *isymbuf = NULL;
2522 bfd_byte *contents = NULL;
2523 bfd_vma addr = 0;
2524 bfd_vma toaddr;
2525 int align_pad_size = 0;
2526 bfd_boolean result = TRUE;
2527
2528 *again = FALSE;
2529
2530 if (link_info->relocateable
2531 || (sec->flags & SEC_RELOC) == 0
2532 || sec->reloc_count == 0)
2533 return TRUE;
2534
2535 /* If this is the first time we have been called
2536 for this section, initialize the cooked size. */
2537 if (sec->_cooked_size == 0)
2538 sec->_cooked_size = sec->_raw_size;
2539
2540 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2541
2542 internal_relocs = (_bfd_elf32_link_read_relocs
2543 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2544 link_info->keep_memory));
2545 if (internal_relocs == NULL)
2546 goto error_return;
2547
2548 irelend = internal_relocs + sec->reloc_count;
2549
2550 while (addr < sec->_cooked_size)
2551 {
2552 toaddr = sec->_cooked_size;
2553
2554 for (irel = internal_relocs; irel < irelend; irel ++)
2555 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2556 && irel->r_offset > addr
2557 && irel->r_offset < toaddr)
2558 toaddr = irel->r_offset;
2559
2560#ifdef DEBUG_RELAX
2561 fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n",
2562 addr, toaddr, align_pad_size);
2563#endif
2564 if (irelalign)
2565 {
2566 bfd_vma alignto;
2567 bfd_vma alignmoveto;
2568
2569 alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend);
2570 alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend);
2571
2572 if (alignmoveto < alignto)
2573 {
2574 unsigned int i;
2575
2576 align_pad_size = alignto - alignmoveto;
2577#ifdef DEBUG_RELAX
2578 fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n",
2579 alignmoveto, toaddr, align_pad_size);
2580#endif
2581 if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto,
2582 toaddr, align_pad_size))
2583 goto error_return;
2584
2585 for (i = BFD_ALIGN (toaddr - align_pad_size, 1);
2586 (i + 1) < toaddr; i += 2)
2587 bfd_put_16 (abfd, NOP_OPCODE, contents + i);
2588
2589 addr = alignmoveto;
2590 }
2591 else
2592 align_pad_size = 0;
2593 }
2594
2595 for (irel = internal_relocs; irel < irelend; irel++)
2596 {
2597 bfd_vma laddr;
2598 bfd_vma addend;
2599 bfd_vma symval;
2600 int insn[5];
2601 int no_match = -1;
2602 Elf_Internal_Rela *hi_irelfn;
2603 Elf_Internal_Rela *lo_irelfn;
2604 Elf_Internal_Rela *irelcall;
2605 bfd_signed_vma foff;
2606
2607 if (! (irel->r_offset >= addr && irel->r_offset < toaddr
2608 && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL
2609 || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)))
2610 continue;
2611
2612#ifdef DEBUG_RELAX
2613 fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
2614 irel->r_info,
2615 irel->r_offset,
2616 irel->r_addend );
2617#endif
2618
2619 /* Get the section contents. */
2620 if (contents == NULL)
2621 {
2622 if (elf_section_data (sec)->this_hdr.contents != NULL)
2623 contents = elf_section_data (sec)->this_hdr.contents;
2624 else
2625 {
2626 contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
2627 if (contents == NULL)
2628 goto error_return;
2629
2630 if (! bfd_get_section_contents (abfd, sec, contents,
2631 (file_ptr) 0, sec->_raw_size))
2632 goto error_return;
2633 }
2634 }
2635
2636 /* Read this BFD's local symbols if we haven't done so already. */
2637 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2638 {
2639 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2640 if (isymbuf == NULL)
2641 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2642 symtab_hdr->sh_info, 0,
2643 NULL, NULL, NULL);
2644 if (isymbuf == NULL)
2645 goto error_return;
2646 }
2647
2648 laddr = irel->r_offset;
2649
2650 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL)
2651 {
2652 /* Check code for -mlong-calls output. */
2653 if (laddr + 16 <= (bfd_vma) sec->_raw_size)
2654 {
2655 insn[0] = bfd_get_16 (abfd, contents + laddr);
2656 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2657 insn[2] = bfd_get_32 (abfd, contents + laddr + 8);
2658 insn[3] = bfd_get_16 (abfd, contents + laddr + 12);
2659 insn[4] = bfd_get_16 (abfd, contents + laddr + 14);
2660
2661 if ((insn[0] & MOVHI_MASK) != MOVHI
2662 || MOVHI_R1 (insn[0]) != 0)
2663 no_match = 0;
2664
2665 if (no_match < 0
2666 && ((insn[1] & MOVEA_MASK) != MOVEA
2667 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2668 no_match = 1;
2669
2670 if (no_match < 0
2671 && (insn[2] & JARL_4_MASK) != JARL_4)
2672 no_match = 2;
2673
2674 if (no_match < 0
2675 && ((insn[3] & ADD_I_MASK) != ADD_I
2676 || ADD_I5 (insn[3]) != 4
2677 || JARL_R2 (insn[2]) != ADD_R2 (insn[3])))
2678 no_match = 3;
2679
2680 if (no_match < 0
2681 && ((insn[4] & JMP_R_MASK) != JMP_R
2682 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4])))
2683 no_match = 4;
2684 }
2685 else
2686 {
2687 ((*_bfd_error_handler)
2688 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
2689 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2690
2691 continue;
2692 }
2693
2694 if (no_match >= 0)
2695 {
2696 ((*_bfd_error_handler)
2697 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
2698 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2699
2700 continue;
2701 }
2702
2703 /* Get the reloc for the address from which the register is
2704 being loaded. This reloc will tell us which function is
2705 actually being called. */
2706 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2707 if (hi_irelfn->r_offset == laddr + 2
2708 && ELF32_R_TYPE (hi_irelfn->r_info)
2709 == (int) R_V850_HI16_S)
2710 break;
2711
2712 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2713 if (lo_irelfn->r_offset == laddr + 6
2714 && ELF32_R_TYPE (lo_irelfn->r_info)
2715 == (int) R_V850_LO16)
2716 break;
2717
2718 for (irelcall = internal_relocs; irelcall < irelend; irelcall ++)
2719 if (irelcall->r_offset == laddr + 8
2720 && ELF32_R_TYPE (irelcall->r_info)
2721 == (int) R_V850_22_PCREL)
2722 break;
2723
2724 if ( hi_irelfn == irelend
2725 || lo_irelfn == irelend
2726 || irelcall == irelend)
2727 {
2728 ((*_bfd_error_handler)
2729 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
2730 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2731
2732 continue;
2733 }
2734
2735 if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info)
2736 {
2737 Elf_Internal_Sym * isym;
2738
2739 /* A local symbol. */
2740 isym = isymbuf + ELF32_R_SYM (irelcall->r_info);
2741
2742 symval = isym->st_value;
2743 }
2744 else
2745 {
2746 unsigned long indx;
2747 struct elf_link_hash_entry * h;
2748
2749 /* An external symbol. */
2750 indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info;
2751 h = elf_sym_hashes (abfd)[indx];
2752 BFD_ASSERT (h != NULL);
2753
2754 if ( h->root.type != bfd_link_hash_defined
2755 && h->root.type != bfd_link_hash_defweak)
2756 /* This appears to be a reference to an undefined
2757 symbol. Just ignore it--it will be caught by the
2758 regular reloc processing. */
2759 continue;
2760
2761 symval = h->root.u.def.value;
2762 }
2763
2764 if (symval + irelcall->r_addend != irelcall->r_offset + 4)
2765 {
2766 ((*_bfd_error_handler)
2767 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
2768 bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset ));
2769
2770 continue;
2771 }
2772
2773 /* Get the value of the symbol referred to by the reloc. */
2774 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2775 {
2776 Elf_Internal_Sym *isym;
2777 asection *sym_sec;
2778
2779 /* A local symbol. */
2780 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2781
2782 if (isym->st_shndx == SHN_UNDEF)
2783 sym_sec = bfd_und_section_ptr;
2784 else if (isym->st_shndx == SHN_ABS)
2785 sym_sec = bfd_abs_section_ptr;
2786 else if (isym->st_shndx == SHN_COMMON)
2787 sym_sec = bfd_com_section_ptr;
2788 else
2789 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2790 symval = (isym->st_value
2791 + sym_sec->output_section->vma
2792 + sym_sec->output_offset);
2793 }
2794 else
2795 {
2796 unsigned long indx;
2797 struct elf_link_hash_entry *h;
2798
2799 /* An external symbol. */
2800 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
2801 h = elf_sym_hashes (abfd)[indx];
2802 BFD_ASSERT (h != NULL);
2803
2804 if ( h->root.type != bfd_link_hash_defined
2805 && h->root.type != bfd_link_hash_defweak)
2806 /* This appears to be a reference to an undefined
2807 symbol. Just ignore it--it will be caught by the
2808 regular reloc processing. */
2809 continue;
2810
2811 symval = (h->root.u.def.value
2812 + h->root.u.def.section->output_section->vma
2813 + h->root.u.def.section->output_offset);
2814 }
2815
2816 addend = irel->r_addend;
2817
2818 foff = (symval + addend
2819 - (irel->r_offset
2820 + sec->output_section->vma
2821 + sec->output_offset
2822 + 4));
2823#ifdef DEBUG_RELAX
2824 fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2825 irel->r_offset,
2826 (irel->r_offset
2827 + sec->output_section->vma
2828 + sec->output_offset),
2829 symval, addend, foff);
2830#endif
2831
2832 if (foff < -0x100000 || foff >= 0x100000)
2833 /* After all that work, we can't shorten this function call. */
2834 continue;
2835
2836 /* For simplicity of coding, we are going to modify the section
2837 contents, the section relocs, and the BFD symbol table. We
2838 must tell the rest of the code not to free up this
2839 information. It would be possible to instead create a table
2840 of changes which have to be made, as is done in coff-mips.c;
2841 that would be more work, but would require less memory when
2842 the linker is run. */
2843 elf_section_data (sec)->relocs = internal_relocs;
2844 elf_section_data (sec)->this_hdr.contents = contents;
2845 symtab_hdr->contents = (bfd_byte *) isymbuf;
2846
2847 /* Replace the long call with a jarl. */
2848 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL);
2849
2850 addend = 0;
2851
2852 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2853 /* If this needs to be changed because of future relaxing,
2854 it will be handled here like other internal IND12W
2855 relocs. */
2856 bfd_put_32 (abfd,
2857 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf),
2858 contents + irel->r_offset);
2859 else
2860 /* We can't fully resolve this yet, because the external
2861 symbol value may be changed by future relaxing.
2862 We let the final link phase handle it. */
2863 bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11),
2864 contents + irel->r_offset);
2865
2866 hi_irelfn->r_info =
2867 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2868 lo_irelfn->r_info =
2869 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2870 irelcall->r_info =
2871 ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE);
2872
2873 if (! v850_elf_relax_delete_bytes (abfd, sec,
2874 irel->r_offset + 4, toaddr, 12))
2875 goto error_return;
2876
2877 align_pad_size += 12;
2878 }
2879 else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)
2880 {
2881 /* Check code for -mlong-jumps output. */
2882 if (laddr + 10 <= (bfd_vma) sec->_raw_size)
2883 {
2884 insn[0] = bfd_get_16 (abfd, contents + laddr);
2885 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2886 insn[2] = bfd_get_16 (abfd, contents + laddr + 8);
2887
2888 if ((insn[0] & MOVHI_MASK) != MOVHI
2889 || MOVHI_R1 (insn[0]) != 0)
2890 no_match = 0;
2891
2892 if (no_match < 0
2893 && ((insn[1] & MOVEA_MASK) != MOVEA
2894 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2895 no_match = 1;
2896
2897 if (no_match < 0
2898 && ((insn[2] & JMP_R_MASK) != JMP_R
2899 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2])))
2900 no_match = 4;
2901 }
2902 else
2903 {
2904 ((*_bfd_error_handler)
2905 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
2906 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2907
2908 continue;
2909 }
2910
2911 if (no_match >= 0)
2912 {
2913 ((*_bfd_error_handler)
2914 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
2915 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2916
2917 continue;
2918 }
2919
2920 /* Get the reloc for the address from which the register is
2921 being loaded. This reloc will tell us which function is
2922 actually being called. */
2923 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2924 if (hi_irelfn->r_offset == laddr + 2
2925 && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S)
2926 break;
2927
2928 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2929 if (lo_irelfn->r_offset == laddr + 6
2930 && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16)
2931 break;
2932
2933 if ( hi_irelfn == irelend
2934 || lo_irelfn == irelend)
2935 {
2936 ((*_bfd_error_handler)
2937 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
2938 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2939
2940 continue;
2941 }
2942
2943 /* Get the value of the symbol referred to by the reloc. */
2944 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2945 {
2946 Elf_Internal_Sym * isym;
2947 asection * sym_sec;
2948
2949 /* A local symbol. */
2950 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2951
2952 if (isym->st_shndx == SHN_UNDEF)
2953 sym_sec = bfd_und_section_ptr;
2954 else if (isym->st_shndx == SHN_ABS)
2955 sym_sec = bfd_abs_section_ptr;
2956 else if (isym->st_shndx == SHN_COMMON)
2957 sym_sec = bfd_com_section_ptr;
2958 else
2959 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2960 symval = (isym->st_value
2961 + sym_sec->output_section->vma
2962 + sym_sec->output_offset);
2963#ifdef DEBUG_RELAX
2964 {
2965 char * name = bfd_elf_string_from_elf_section
2966 (abfd, symtab_hdr->sh_link, isym->st_name);
2967
2968 fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2969 sym_sec->name, name, isym->st_name,
2970 sym_sec->output_section->vma,
2971 sym_sec->output_offset,
2972 isym->st_value, irel->r_addend);
2973 }
2974#endif
2975 }
2976 else
2977 {
2978 unsigned long indx;
2979 struct elf_link_hash_entry * h;
2980
2981 /* An external symbol. */
2982 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2983 h = elf_sym_hashes (abfd)[indx];
2984 BFD_ASSERT (h != NULL);
2985
2986 if ( h->root.type != bfd_link_hash_defined
2987 && h->root.type != bfd_link_hash_defweak)
2988 /* This appears to be a reference to an undefined
2989 symbol. Just ignore it--it will be caught by the
2990 regular reloc processing. */
2991 continue;
2992
2993 symval = (h->root.u.def.value
2994 + h->root.u.def.section->output_section->vma
2995 + h->root.u.def.section->output_offset);
2996#ifdef DEBUG_RELAX
2997 fprintf (stderr,
2998 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2999 sec->name, h->root.root.string, h->root.u.def.value,
3000 sec->output_section->vma, sec->output_offset, irel->r_addend);
3001#endif
3002 }
3003
3004 addend = irel->r_addend;
3005
3006 foff = (symval + addend
3007 - (irel->r_offset
3008 + sec->output_section->vma
3009 + sec->output_offset
3010 + 4));
3011#ifdef DEBUG_RELAX
3012 fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
3013 irel->r_offset,
3014 (irel->r_offset
3015 + sec->output_section->vma
3016 + sec->output_offset),
3017 symval, addend, foff);
3018#endif
3019 if (foff < -0x100000 || foff >= 0x100000)
3020 /* After all that work, we can't shorten this function call. */
3021 continue;
3022
3023 /* For simplicity of coding, we are going to modify the section
3024 contents, the section relocs, and the BFD symbol table. We
3025 must tell the rest of the code not to free up this
3026 information. It would be possible to instead create a table
3027 of changes which have to be made, as is done in coff-mips.c;
3028 that would be more work, but would require less memory when
3029 the linker is run. */
3030 elf_section_data (sec)->relocs = internal_relocs;
3031 elf_section_data (sec)->this_hdr.contents = contents;
3032 symtab_hdr->contents = (bfd_byte *) isymbuf;
3033
3034 if (foff < -0x100 || foff >= 0x100)
3035 {
3036 /* Replace the long jump with a jr. */
3037
3038 irel->r_info =
3039 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL);
3040
3041 irel->r_addend = addend;
3042 addend = 0;
3043
3044 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3045 /* If this needs to be changed because of future relaxing,
3046 it will be handled here like other internal IND12W
3047 relocs. */
3048 bfd_put_32 (abfd,
3049 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf),
3050 contents + irel->r_offset);
3051 else
3052 /* We can't fully resolve this yet, because the external
3053 symbol value may be changed by future relaxing.
3054 We let the final link phase handle it. */
3055 bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset);
3056
3057 hi_irelfn->r_info =
3058 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3059 lo_irelfn->r_info =
3060 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3061 if (!v850_elf_relax_delete_bytes (abfd, sec,
3062 irel->r_offset + 4, toaddr, 6))
3063 goto error_return;
3064
3065 align_pad_size += 6;
3066 }
3067 else
3068 {
3069 /* Replace the long jump with a br. */
3070
3071 irel->r_info =
3072 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL);
3073
3074 irel->r_addend = addend;
3075 addend = 0;
3076
3077 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3078 /* If this needs to be changed because of future relaxing,
3079 it will be handled here like other internal IND12W
3080 relocs. */
3081 bfd_put_16 (abfd,
3082 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070),
3083 contents + irel->r_offset);
3084 else
3085 /* We can't fully resolve this yet, because the external
3086 symbol value may be changed by future relaxing.
3087 We let the final link phase handle it. */
3088 bfd_put_16 (abfd, 0x0585, contents + irel->r_offset);
3089
3090 hi_irelfn->r_info =
3091 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3092 lo_irelfn->r_info =
3093 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3094 if (!v850_elf_relax_delete_bytes (abfd, sec,
3095 irel->r_offset + 2, toaddr, 8))
3096 goto error_return;
3097
3098 align_pad_size += 8;
3099 }
3100 }
3101 }
3102
3103 irelalign = NULL;
3104 for (irel = internal_relocs; irel < irelend; irel++)
3105 {
3106 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
3107 && irel->r_offset == toaddr)
3108 {
3109 irel->r_offset -= align_pad_size;
3110
3111 if (irelalign == NULL || irelalign->r_addend > irel->r_addend)
3112 irelalign = irel;
3113 }
3114 }
3115
3116 addr = toaddr;
3117 }
3118
3119 if (!irelalign)
3120 {
3121#ifdef DEBUG_RELAX
3122 fprintf (stderr, "relax pad %d shorten %d -> %d\n",
3123 align_pad_size,
3124 sec->_cooked_size,
3125 sec->_cooked_size - align_pad_size);
3126#endif
3127 sec->_cooked_size -= align_pad_size;
3128 }
3129
3130 finish:
3131 if (internal_relocs != NULL
3132 && elf_section_data (sec)->relocs != internal_relocs)
3133 free (internal_relocs);
3134
3135 if (contents != NULL
3136 && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents)
3137 free (contents);
3138
3139 if (isymbuf != NULL
3140 && symtab_hdr->contents != (bfd_byte *) isymbuf)
3141 free (isymbuf);
3142
3143 return result;
3144
3145 error_return:
3146 result = FALSE;
3147 goto finish;
3148}
3149
3150
3151#define TARGET_LITTLE_SYM bfd_elf32_v850_vec
3152#define TARGET_LITTLE_NAME "elf32-v850"
3153#define ELF_ARCH bfd_arch_v850
3154#define ELF_MACHINE_CODE EM_V850
3155#define ELF_MACHINE_ALT1 EM_CYGNUS_V850
3156#define ELF_MAXPAGESIZE 0x1000
3157
3158#define elf_info_to_howto v850_elf_info_to_howto_rela
3159#define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3160
3161#define elf_backend_check_relocs v850_elf_check_relocs
3162#define elf_backend_relocate_section v850_elf_relocate_section
3163#define elf_backend_object_p v850_elf_object_p
3164#define elf_backend_final_write_processing v850_elf_final_write_processing
3165#define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3166#define elf_backend_symbol_processing v850_elf_symbol_processing
3167#define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3168#define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3169#define elf_backend_section_from_shdr v850_elf_section_from_shdr
3170#define elf_backend_fake_sections v850_elf_fake_sections
3171#define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
3172#define elf_backend_gc_sweep_hook v850_elf_gc_sweep_hook
3173
3174#define elf_backend_can_gc_sections 1
3175#define elf_backend_rela_normal 1
3176
3177#define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3178#define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
3179#define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3180#define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3181#define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
3182#define bfd_elf32_bfd_relax_section v850_elf_relax_section
3183
3184#define elf_symbol_leading_char '_'
3185
3186#include "elf32-target.h"
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