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bfd/
[deliverable/binutils-gdb.git] / bfd / elf32-v850.c
1 /* V850-specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
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
35 static reloc_howto_type *v850_elf_reloc_type_lookup
36 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
37 static void v850_elf_info_to_howto_rel
38 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
39 static void v850_elf_info_to_howto_rela
40 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
41 static bfd_reloc_status_type v850_elf_reloc
42 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
43 static bfd_boolean v850_elf_is_local_label_name
44 PARAMS ((bfd *, const char *));
45 static 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 **));
48 static bfd_reloc_status_type v850_elf_perform_relocation
49 PARAMS ((bfd *, unsigned int, bfd_vma, bfd_byte *));
50 static bfd_boolean v850_elf_check_relocs
51 PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *));
52 static void remember_hi16s_reloc
53 PARAMS ((bfd *, bfd_vma, bfd_byte *));
54 static bfd_byte * find_remembered_hi16s_reloc
55 PARAMS ((bfd_vma, bfd_boolean *));
56 static 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));
59 static bfd_boolean v850_elf_object_p
60 PARAMS ((bfd *));
61 static bfd_boolean v850_elf_fake_sections
62 PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
63 static void v850_elf_final_write_processing
64 PARAMS ((bfd *, bfd_boolean));
65 static bfd_boolean v850_elf_set_private_flags
66 PARAMS ((bfd *, flagword));
67 static bfd_boolean v850_elf_merge_private_bfd_data
68 PARAMS ((bfd *, bfd *));
69 static bfd_boolean v850_elf_print_private_bfd_data
70 PARAMS ((bfd *, PTR));
71 static bfd_boolean v850_elf_section_from_bfd_section
72 PARAMS ((bfd *, asection *, int *));
73 static void v850_elf_symbol_processing
74 PARAMS ((bfd *, asymbol *));
75 static 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 *));
78 static bfd_boolean v850_elf_link_output_symbol_hook
79 PARAMS ((struct bfd_link_info *, const char *, Elf_Internal_Sym *,
80 asection *, struct elf_link_hash_entry *));
81 static bfd_boolean v850_elf_section_from_shdr
82 PARAMS ((bfd *, Elf_Internal_Shdr *, const char *));
83 static bfd_boolean v850_elf_gc_sweep_hook
84 PARAMS ((bfd *, struct bfd_link_info *, asection *,
85 const Elf_Internal_Rela *));
86 static 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 *));
90 static bfd_reloc_status_type v850_elf_ignore_reloc
91 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
92 static bfd_boolean v850_elf_relax_delete_bytes
93 PARAMS ((bfd *, asection *, bfd_vma, bfd_vma, int));
94 static 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. */
99 static 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
540 struct 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
548 static 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 \f
582 /* Map a bfd relocation into the appropriate howto structure. */
583
584 static reloc_howto_type *
585 v850_elf_reloc_type_lookup (abfd, code)
586 bfd *abfd ATTRIBUTE_UNUSED;
587 bfd_reloc_code_real_type code;
588 {
589 unsigned int i;
590
591 for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;)
592 if (v850_elf_reloc_map[i].bfd_reloc_val == code)
593 {
594 unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val;
595
596 BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val);
597
598 return v850_elf_howto_table + elf_reloc_val;
599 }
600
601 return NULL;
602 }
603 \f
604 /* Set the howto pointer for an V850 ELF reloc. */
605
606 static void
607 v850_elf_info_to_howto_rel (abfd, cache_ptr, dst)
608 bfd *abfd ATTRIBUTE_UNUSED;
609 arelent *cache_ptr;
610 Elf_Internal_Rela *dst;
611 {
612 unsigned int r_type;
613
614 r_type = ELF32_R_TYPE (dst->r_info);
615 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
616 cache_ptr->howto = &v850_elf_howto_table[r_type];
617 }
618
619 /* Set the howto pointer for a V850 ELF reloc (type RELA). */
620 static void
621 v850_elf_info_to_howto_rela (abfd, cache_ptr, dst)
622 bfd *abfd ATTRIBUTE_UNUSED;
623 arelent * cache_ptr;
624 Elf_Internal_Rela *dst;
625 {
626 unsigned int r_type;
627
628 r_type = ELF32_R_TYPE (dst->r_info);
629 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
630 cache_ptr->howto = &v850_elf_howto_table[r_type];
631 }
632 \f
633 /* Look through the relocs for a section during the first phase, and
634 allocate space in the global offset table or procedure linkage
635 table. */
636
637 static bfd_boolean
638 v850_elf_check_relocs (abfd, info, sec, relocs)
639 bfd *abfd;
640 struct bfd_link_info *info;
641 asection *sec;
642 const Elf_Internal_Rela *relocs;
643 {
644 bfd_boolean ret = TRUE;
645 bfd *dynobj;
646 Elf_Internal_Shdr *symtab_hdr;
647 struct elf_link_hash_entry **sym_hashes;
648 const Elf_Internal_Rela *rel;
649 const Elf_Internal_Rela *rel_end;
650 asection *sreloc;
651 enum v850_reloc_type r_type;
652 int other = 0;
653 const char *common = (const char *)0;
654
655 if (info->relocatable)
656 return TRUE;
657
658 #ifdef DEBUG
659 fprintf (stderr, "v850_elf_check_relocs called for section %s in %s\n",
660 bfd_get_section_name (abfd, sec),
661 bfd_archive_filename (abfd));
662 #endif
663
664 dynobj = elf_hash_table (info)->dynobj;
665 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
666 sym_hashes = elf_sym_hashes (abfd);
667 sreloc = NULL;
668
669 rel_end = relocs + sec->reloc_count;
670 for (rel = relocs; rel < rel_end; rel++)
671 {
672 unsigned long r_symndx;
673 struct elf_link_hash_entry *h;
674
675 r_symndx = ELF32_R_SYM (rel->r_info);
676 if (r_symndx < symtab_hdr->sh_info)
677 h = NULL;
678 else
679 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
680
681 r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info);
682 switch (r_type)
683 {
684 default:
685 case R_V850_NONE:
686 case R_V850_9_PCREL:
687 case R_V850_22_PCREL:
688 case R_V850_HI16_S:
689 case R_V850_HI16:
690 case R_V850_LO16:
691 case R_V850_ABS32:
692 case R_V850_REL32:
693 case R_V850_16:
694 case R_V850_8:
695 case R_V850_CALLT_6_7_OFFSET:
696 case R_V850_CALLT_16_16_OFFSET:
697 break;
698
699 /* This relocation describes the C++ object vtable hierarchy.
700 Reconstruct it for later use during GC. */
701 case R_V850_GNU_VTINHERIT:
702 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
703 return FALSE;
704 break;
705
706 /* This relocation describes which C++ vtable entries
707 are actually used. Record for later use during GC. */
708 case R_V850_GNU_VTENTRY:
709 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
710 return FALSE;
711 break;
712
713 case R_V850_SDA_16_16_SPLIT_OFFSET:
714 case R_V850_SDA_16_16_OFFSET:
715 case R_V850_SDA_15_16_OFFSET:
716 other = V850_OTHER_SDA;
717 common = ".scommon";
718 goto small_data_common;
719
720 case R_V850_ZDA_16_16_SPLIT_OFFSET:
721 case R_V850_ZDA_16_16_OFFSET:
722 case R_V850_ZDA_15_16_OFFSET:
723 other = V850_OTHER_ZDA;
724 common = ".zcommon";
725 goto small_data_common;
726
727 case R_V850_TDA_4_5_OFFSET:
728 case R_V850_TDA_4_4_OFFSET:
729 case R_V850_TDA_6_8_OFFSET:
730 case R_V850_TDA_7_8_OFFSET:
731 case R_V850_TDA_7_7_OFFSET:
732 case R_V850_TDA_16_16_OFFSET:
733 other = V850_OTHER_TDA;
734 common = ".tcommon";
735 /* fall through */
736
737 #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA)
738
739 small_data_common:
740 if (h)
741 {
742 /* Flag which type of relocation was used. */
743 h->other |= other;
744 if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK)
745 && (h->other & V850_OTHER_ERROR) == 0)
746 {
747 const char * msg;
748 static char buff[200]; /* XXX */
749
750 switch (h->other & V850_OTHER_MASK)
751 {
752 default:
753 msg = _("Variable `%s' cannot occupy in multiple small data regions");
754 break;
755 case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA:
756 msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions");
757 break;
758 case V850_OTHER_SDA | V850_OTHER_ZDA:
759 msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously");
760 break;
761 case V850_OTHER_SDA | V850_OTHER_TDA:
762 msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously");
763 break;
764 case V850_OTHER_ZDA | V850_OTHER_TDA:
765 msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously");
766 break;
767 }
768
769 sprintf (buff, msg, h->root.root.string);
770 info->callbacks->warning (info, buff, h->root.root.string,
771 abfd, h->root.u.def.section,
772 (bfd_vma) 0);
773
774 bfd_set_error (bfd_error_bad_value);
775 h->other |= V850_OTHER_ERROR;
776 ret = FALSE;
777 }
778 }
779
780 if (h && h->root.type == bfd_link_hash_common
781 && h->root.u.c.p
782 && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON"))
783 {
784 asection * section;
785
786 section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common);
787 section->flags |= SEC_IS_COMMON;
788 }
789
790 #ifdef DEBUG
791 fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n",
792 v850_elf_howto_table[ (int)r_type ].name,
793 (h && h->root.root.string) ? h->root.root.string : "<unknown>",
794 (h->root.type == bfd_link_hash_common) ? ", symbol is common" : "");
795 #endif
796 break;
797 }
798 }
799
800 return ret;
801 }
802
803 /* In the old version, when an entry was checked out from the table,
804 it was deleted. This produced an error if the entry was needed
805 more than once, as the second attempted retry failed.
806
807 In the current version, the entry is not deleted, instead we set
808 the field 'found' to TRUE. If a second lookup matches the same
809 entry, then we know that the hi16s reloc has already been updated
810 and does not need to be updated a second time.
811
812 TODO - TOFIX: If it is possible that we need to restore 2 different
813 addresses from the same table entry, where the first generates an
814 overflow, whilst the second do not, then this code will fail. */
815
816 typedef struct hi16s_location
817 {
818 bfd_vma addend;
819 bfd_byte *address;
820 unsigned long counter;
821 bfd_boolean found;
822 struct hi16s_location *next;
823 }
824 hi16s_location;
825
826 static hi16s_location *previous_hi16s;
827 static hi16s_location *free_hi16s;
828 static unsigned long hi16s_counter;
829
830 static void
831 remember_hi16s_reloc (abfd, addend, address)
832 bfd *abfd;
833 bfd_vma addend;
834 bfd_byte *address;
835 {
836 hi16s_location * entry = NULL;
837 bfd_size_type amt = sizeof (* free_hi16s);
838
839 /* Find a free structure. */
840 if (free_hi16s == NULL)
841 free_hi16s = (hi16s_location *) bfd_zalloc (abfd, amt);
842
843 entry = free_hi16s;
844 free_hi16s = free_hi16s->next;
845
846 entry->addend = addend;
847 entry->address = address;
848 entry->counter = hi16s_counter ++;
849 entry->found = FALSE;
850 entry->next = previous_hi16s;
851 previous_hi16s = entry;
852
853 /* Cope with wrap around of our counter. */
854 if (hi16s_counter == 0)
855 {
856 /* XXX - Assume that all counter entries differ only in their low 16 bits. */
857 for (entry = previous_hi16s; entry != NULL; entry = entry->next)
858 entry->counter &= 0xffff;
859
860 hi16s_counter = 0x10000;
861 }
862
863 return;
864 }
865
866 static bfd_byte *
867 find_remembered_hi16s_reloc (addend, already_found)
868 bfd_vma addend;
869 bfd_boolean *already_found;
870 {
871 hi16s_location *match = NULL;
872 hi16s_location *entry;
873 hi16s_location *previous = NULL;
874 hi16s_location *prev;
875 bfd_byte *addr;
876
877 /* Search the table. Record the most recent entry that matches. */
878 for (entry = previous_hi16s; entry; entry = entry->next)
879 {
880 if (entry->addend == addend
881 && (match == NULL || match->counter < entry->counter))
882 {
883 previous = prev;
884 match = entry;
885 }
886
887 prev = entry;
888 }
889
890 if (match == NULL)
891 return NULL;
892
893 /* Extract the address. */
894 addr = match->address;
895
896 /* Remember if this entry has already been used before. */
897 if (already_found)
898 * already_found = match->found;
899
900 /* Note that this entry has now been used. */
901 match->found = TRUE;
902
903 return addr;
904 }
905
906 /* FIXME: The code here probably ought to be removed and the code in reloc.c
907 allowed to do its stuff instead. At least for most of the relocs, anyway. */
908
909 static bfd_reloc_status_type
910 v850_elf_perform_relocation (abfd, r_type, addend, address)
911 bfd *abfd;
912 unsigned int r_type;
913 bfd_vma addend;
914 bfd_byte *address;
915 {
916 unsigned long insn;
917 bfd_signed_vma saddend = (bfd_signed_vma) addend;
918
919 switch (r_type)
920 {
921 default:
922 /* fprintf (stderr, "reloc type %d not SUPPORTED\n", r_type ); */
923 return bfd_reloc_notsupported;
924
925 case R_V850_REL32:
926 case R_V850_ABS32:
927 bfd_put_32 (abfd, addend, address);
928 return bfd_reloc_ok;
929
930 case R_V850_22_PCREL:
931 if (saddend > 0x1fffff || saddend < -0x200000)
932 return bfd_reloc_overflow;
933
934 if ((addend % 2) != 0)
935 return bfd_reloc_dangerous;
936
937 insn = bfd_get_32 (abfd, address);
938 insn &= ~0xfffe003f;
939 insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16));
940 bfd_put_32 (abfd, (bfd_vma) insn, address);
941 return bfd_reloc_ok;
942
943 case R_V850_9_PCREL:
944 if (saddend > 0xff || saddend < -0x100)
945 return bfd_reloc_overflow;
946
947 if ((addend % 2) != 0)
948 return bfd_reloc_dangerous;
949
950 insn = bfd_get_16 (abfd, address);
951 insn &= ~ 0xf870;
952 insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3);
953 break;
954
955 case R_V850_HI16:
956 addend += (bfd_get_16 (abfd, address) << 16);
957 addend = (addend >> 16);
958 insn = addend;
959 break;
960
961 case R_V850_HI16_S:
962 /* Remember where this relocation took place. */
963 remember_hi16s_reloc (abfd, addend, address);
964
965 addend += (bfd_get_16 (abfd, address) << 16);
966 addend = (addend >> 16) + ((addend & 0x8000) != 0);
967
968 /* This relocation cannot overflow. */
969 if (addend > 0x7fff)
970 addend = 0;
971
972 insn = addend;
973 break;
974
975 case R_V850_LO16:
976 /* Calculate the sum of the value stored in the instruction and the
977 addend and check for overflow from the low 16 bits into the high
978 16 bits. The assembler has already done some of this: If the
979 value stored in the instruction has its 15th bit set, (counting
980 from zero) then the assembler will have added 1 to the value
981 stored in the associated HI16S reloc. So for example, these
982 relocations:
983
984 movhi hi( fred ), r0, r1
985 movea lo( fred ), r1, r1
986
987 will store 0 in the value fields for the MOVHI and MOVEA instructions
988 and addend will be the address of fred, but for these instructions:
989
990 movhi hi( fred + 0x123456), r0, r1
991 movea lo( fred + 0x123456), r1, r1
992
993 the value stored in the MOVHI instruction will be 0x12 and the value
994 stored in the MOVEA instruction will be 0x3456. If however the
995 instructions were:
996
997 movhi hi( fred + 0x10ffff), r0, r1
998 movea lo( fred + 0x10ffff), r1, r1
999
1000 then the value stored in the MOVHI instruction would be 0x11 (not
1001 0x10) and the value stored in the MOVEA instruction would be 0xffff.
1002 Thus (assuming for the moment that the addend is 0), at run time the
1003 MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction
1004 adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if
1005 the instructions were:
1006
1007 movhi hi( fred - 1), r0, r1
1008 movea lo( fred - 1), r1, r1
1009
1010 then 0 is stored in the MOVHI instruction and -1 is stored in the
1011 MOVEA instruction.
1012
1013 Overflow can occur if the addition of the value stored in the
1014 instruction plus the addend sets the 15th bit when before it was clear.
1015 This is because the 15th bit will be sign extended into the high part,
1016 thus reducing its value by one, but since the 15th bit was originally
1017 clear, the assembler will not have added 1 to the previous HI16S reloc
1018 to compensate for this effect. For example:
1019
1020 movhi hi( fred + 0x123456), r0, r1
1021 movea lo( fred + 0x123456), r1, r1
1022
1023 The value stored in HI16S reloc is 0x12, the value stored in the LO16
1024 reloc is 0x3456. If we assume that the address of fred is 0x00007000
1025 then the relocations become:
1026
1027 HI16S: 0x0012 + (0x00007000 >> 16) = 0x12
1028 LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456
1029
1030 but when the instructions are executed, the MOVEA instruction's value
1031 is signed extended, so the sum becomes:
1032
1033 0x00120000
1034 + 0xffffa456
1035 ------------
1036 0x0011a456 but 'fred + 0x123456' = 0x0012a456
1037
1038 Note that if the 15th bit was set in the value stored in the LO16
1039 reloc, then we do not have to do anything:
1040
1041 movhi hi( fred + 0x10ffff), r0, r1
1042 movea lo( fred + 0x10ffff), r1, r1
1043
1044 HI16S: 0x0011 + (0x00007000 >> 16) = 0x11
1045 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff
1046
1047 0x00110000
1048 + 0x00006fff
1049 ------------
1050 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff
1051
1052 Overflow can also occur if the computation carries into the 16th bit
1053 and it also results in the 15th bit having the same value as the 15th
1054 bit of the original value. What happens is that the HI16S reloc
1055 will have already examined the 15th bit of the original value and
1056 added 1 to the high part if the bit is set. This compensates for the
1057 sign extension of 15th bit of the result of the computation. But now
1058 there is a carry into the 16th bit, and this has not been allowed for.
1059
1060 So, for example if fred is at address 0xf000:
1061
1062 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
1063 movea lo( fred + 0xffff), r1, r1
1064
1065 HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001
1066 LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost)
1067
1068 0x00010000
1069 + 0xffffefff
1070 ------------
1071 0x0000efff but 'fred + 0xffff' = 0x0001efff
1072
1073 Similarly, if the 15th bit remains clear, but overflow occurs into
1074 the 16th bit then (assuming the address of fred is 0xf000):
1075
1076 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
1077 movea lo( fred + 0x7000), r1, r1
1078
1079 HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000
1080 LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
1081
1082 0x00000000
1083 + 0x00006fff
1084 ------------
1085 0x00006fff but 'fred + 0x7000' = 0x00016fff
1086
1087 Note - there is no need to change anything if a carry occurs, and the
1088 15th bit changes its value from being set to being clear, as the HI16S
1089 reloc will have already added in 1 to the high part for us:
1090
1091 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
1092 movea lo( fred + 0xffff), r1, r1
1093
1094 HI16S: 0x0001 + (0x00007000 >> 16)
1095 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
1096
1097 0x00010000
1098 + 0x00006fff (bit 15 not set, so the top half is zero)
1099 ------------
1100 0x00016fff which is right (assuming that fred is at 0x7000)
1101
1102 but if the 15th bit goes from being clear to being set, then we must
1103 once again handle overflow:
1104
1105 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
1106 movea lo( fred + 0x7000), r1, r1
1107
1108 HI16S: 0x0000 + (0x0000ffff >> 16)
1109 LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16)
1110
1111 0x00000000
1112 + 0x00006fff (bit 15 not set, so the top half is zero)
1113 ------------
1114 0x00006fff which is wrong (assuming that fred is at 0xffff). */
1115 {
1116 long result;
1117
1118 insn = bfd_get_16 (abfd, address);
1119 result = insn + addend;
1120
1121 #define BIT15_SET(x) ((x) & 0x8000)
1122 #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff)
1123
1124 if ((BIT15_SET (result) && ! BIT15_SET (addend))
1125 || (OVERFLOWS (addend, insn)
1126 && ((! BIT15_SET (insn)) || (BIT15_SET (addend)))))
1127 {
1128 bfd_boolean already_updated;
1129 bfd_byte *hi16s_address = find_remembered_hi16s_reloc
1130 (addend, & already_updated);
1131
1132 /* Amend the matching HI16_S relocation. */
1133 if (hi16s_address != NULL)
1134 {
1135 if (! already_updated)
1136 {
1137 insn = bfd_get_16 (abfd, hi16s_address);
1138 insn += 1;
1139 bfd_put_16 (abfd, (bfd_vma) insn, hi16s_address);
1140 }
1141 }
1142 else
1143 {
1144 fprintf (stderr, _("FAILED to find previous HI16 reloc\n"));
1145 return bfd_reloc_overflow;
1146 }
1147 }
1148
1149 /* Do not complain if value has top bit set, as this has been anticipated. */
1150 insn = result & 0xffff;
1151 break;
1152 }
1153
1154 case R_V850_8:
1155 addend += (char) bfd_get_8 (abfd, address);
1156
1157 saddend = (bfd_signed_vma) addend;
1158
1159 if (saddend > 0x7f || saddend < -0x80)
1160 return bfd_reloc_overflow;
1161
1162 bfd_put_8 (abfd, addend, address);
1163 return bfd_reloc_ok;
1164
1165 case R_V850_CALLT_16_16_OFFSET:
1166 addend += bfd_get_16 (abfd, address);
1167
1168 saddend = (bfd_signed_vma) addend;
1169
1170 if (saddend > 0xffff || saddend < 0)
1171 return bfd_reloc_overflow;
1172
1173 insn = addend;
1174 break;
1175
1176 case R_V850_16:
1177
1178 /* drop through */
1179 case R_V850_SDA_16_16_OFFSET:
1180 case R_V850_ZDA_16_16_OFFSET:
1181 case R_V850_TDA_16_16_OFFSET:
1182 addend += bfd_get_16 (abfd, address);
1183
1184 saddend = (bfd_signed_vma) addend;
1185
1186 if (saddend > 0x7fff || saddend < -0x8000)
1187 return bfd_reloc_overflow;
1188
1189 insn = addend;
1190 break;
1191
1192 case R_V850_SDA_15_16_OFFSET:
1193 case R_V850_ZDA_15_16_OFFSET:
1194 insn = bfd_get_16 (abfd, address);
1195 addend += (insn & 0xfffe);
1196
1197 saddend = (bfd_signed_vma) addend;
1198
1199 if (saddend > 0x7ffe || saddend < -0x8000)
1200 return bfd_reloc_overflow;
1201
1202 if (addend & 1)
1203 return bfd_reloc_dangerous;
1204
1205 insn = (addend &~ (bfd_vma) 1) | (insn & 1);
1206 break;
1207
1208 case R_V850_TDA_6_8_OFFSET:
1209 insn = bfd_get_16 (abfd, address);
1210 addend += ((insn & 0x7e) << 1);
1211
1212 saddend = (bfd_signed_vma) addend;
1213
1214 if (saddend > 0xfc || saddend < 0)
1215 return bfd_reloc_overflow;
1216
1217 if (addend & 3)
1218 return bfd_reloc_dangerous;
1219
1220 insn &= 0xff81;
1221 insn |= (addend >> 1);
1222 break;
1223
1224 case R_V850_TDA_7_8_OFFSET:
1225 insn = bfd_get_16 (abfd, address);
1226 addend += ((insn & 0x7f) << 1);
1227
1228 saddend = (bfd_signed_vma) addend;
1229
1230 if (saddend > 0xfe || saddend < 0)
1231 return bfd_reloc_overflow;
1232
1233 if (addend & 1)
1234 return bfd_reloc_dangerous;
1235
1236 insn &= 0xff80;
1237 insn |= (addend >> 1);
1238 break;
1239
1240 case R_V850_TDA_7_7_OFFSET:
1241 insn = bfd_get_16 (abfd, address);
1242 addend += insn & 0x7f;
1243
1244 saddend = (bfd_signed_vma) addend;
1245
1246 if (saddend > 0x7f || saddend < 0)
1247 return bfd_reloc_overflow;
1248
1249 insn &= 0xff80;
1250 insn |= addend;
1251 break;
1252
1253 case R_V850_TDA_4_5_OFFSET:
1254 insn = bfd_get_16 (abfd, address);
1255 addend += ((insn & 0xf) << 1);
1256
1257 saddend = (bfd_signed_vma) addend;
1258
1259 if (saddend > 0x1e || saddend < 0)
1260 return bfd_reloc_overflow;
1261
1262 if (addend & 1)
1263 return bfd_reloc_dangerous;
1264
1265 insn &= 0xfff0;
1266 insn |= (addend >> 1);
1267 break;
1268
1269 case R_V850_TDA_4_4_OFFSET:
1270 insn = bfd_get_16 (abfd, address);
1271 addend += insn & 0xf;
1272
1273 saddend = (bfd_signed_vma) addend;
1274
1275 if (saddend > 0xf || saddend < 0)
1276 return bfd_reloc_overflow;
1277
1278 insn &= 0xfff0;
1279 insn |= addend;
1280 break;
1281
1282 case R_V850_ZDA_16_16_SPLIT_OFFSET:
1283 case R_V850_SDA_16_16_SPLIT_OFFSET:
1284 insn = bfd_get_32 (abfd, address);
1285 addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5);
1286
1287 saddend = (bfd_signed_vma) addend;
1288
1289 if (saddend > 0x7fff || saddend < -0x8000)
1290 return bfd_reloc_overflow;
1291
1292 insn &= 0x0001ffdf;
1293 insn |= (addend & 1) << 5;
1294 insn |= (addend &~ (bfd_vma) 1) << 16;
1295
1296 bfd_put_32 (abfd, (bfd_vma) insn, address);
1297 return bfd_reloc_ok;
1298
1299 case R_V850_CALLT_6_7_OFFSET:
1300 insn = bfd_get_16 (abfd, address);
1301 addend += ((insn & 0x3f) << 1);
1302
1303 saddend = (bfd_signed_vma) addend;
1304
1305 if (saddend > 0x7e || saddend < 0)
1306 return bfd_reloc_overflow;
1307
1308 if (addend & 1)
1309 return bfd_reloc_dangerous;
1310
1311 insn &= 0xff80;
1312 insn |= (addend >> 1);
1313 break;
1314
1315 case R_V850_GNU_VTINHERIT:
1316 case R_V850_GNU_VTENTRY:
1317 return bfd_reloc_ok;
1318
1319 }
1320
1321 bfd_put_16 (abfd, (bfd_vma) insn, address);
1322 return bfd_reloc_ok;
1323 }
1324 \f
1325 /* Insert the addend into the instruction. */
1326
1327 static bfd_reloc_status_type
1328 v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err)
1329 bfd *abfd ATTRIBUTE_UNUSED;
1330 arelent *reloc;
1331 asymbol *symbol;
1332 PTR data ATTRIBUTE_UNUSED;
1333 asection *isection;
1334 bfd *obfd;
1335 char **err ATTRIBUTE_UNUSED;
1336 {
1337 long relocation;
1338
1339 /* If there is an output BFD,
1340 and the symbol is not a section name (which is only defined at final link time),
1341 and either we are not putting the addend into the instruction
1342 or the addend is zero, so there is nothing to add into the instruction
1343 then just fixup the address and return. */
1344 if (obfd != (bfd *) NULL
1345 && (symbol->flags & BSF_SECTION_SYM) == 0
1346 && (! reloc->howto->partial_inplace
1347 || reloc->addend == 0))
1348 {
1349 reloc->address += isection->output_offset;
1350 return bfd_reloc_ok;
1351 }
1352
1353 /* Catch relocs involving undefined symbols. */
1354 if (bfd_is_und_section (symbol->section)
1355 && (symbol->flags & BSF_WEAK) == 0
1356 && obfd == NULL)
1357 return bfd_reloc_undefined;
1358
1359 /* We handle final linking of some relocs ourselves. */
1360
1361 /* Is the address of the relocation really within the section? */
1362 if (reloc->address > isection->_cooked_size)
1363 return bfd_reloc_outofrange;
1364
1365 /* Work out which section the relocation is targeted at and the
1366 initial relocation command value. */
1367
1368 if (reloc->howto->pc_relative)
1369 return bfd_reloc_ok;
1370
1371 /* Get symbol value. (Common symbols are special.) */
1372 if (bfd_is_com_section (symbol->section))
1373 relocation = 0;
1374 else
1375 relocation = symbol->value;
1376
1377 /* Convert input-section-relative symbol value to absolute + addend. */
1378 relocation += symbol->section->output_section->vma;
1379 relocation += symbol->section->output_offset;
1380 relocation += reloc->addend;
1381
1382 #if 0 /* Since this reloc is going to be processed later on, we should
1383 not make it pc-relative here. To test this, try assembling and
1384 linking this program:
1385
1386 .text
1387 .globl _start
1388 nop
1389 _start:
1390 jr foo
1391
1392 .section ".foo","ax"
1393 nop
1394 foo:
1395 nop */
1396 if (reloc->howto->pc_relative)
1397 {
1398 /* Here the variable relocation holds the final address of the
1399 symbol we are relocating against, plus any addend. */
1400 relocation -= isection->output_section->vma + isection->output_offset;
1401
1402 /* Deal with pcrel_offset. */
1403 relocation -= reloc->address;
1404 }
1405 #endif
1406 reloc->addend = relocation;
1407 return bfd_reloc_ok;
1408 }
1409
1410 /* This function is used for relocs which are only used
1411 for relaxing, which the linker should otherwise ignore. */
1412
1413 static bfd_reloc_status_type
1414 v850_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section,
1415 output_bfd, error_message)
1416 bfd *abfd ATTRIBUTE_UNUSED;
1417 arelent *reloc_entry;
1418 asymbol *symbol ATTRIBUTE_UNUSED;
1419 PTR data ATTRIBUTE_UNUSED;
1420 asection *input_section;
1421 bfd *output_bfd;
1422 char **error_message ATTRIBUTE_UNUSED;
1423 {
1424 if (output_bfd != NULL)
1425 reloc_entry->address += input_section->output_offset;
1426
1427 return bfd_reloc_ok;
1428 }
1429 \f
1430 static bfd_boolean
1431 v850_elf_is_local_label_name (abfd, name)
1432 bfd *abfd ATTRIBUTE_UNUSED;
1433 const char *name;
1434 {
1435 return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
1436 || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_'));
1437 }
1438 \f
1439 /* We overload some of the bfd_reloc error codes for own purposes. */
1440 #define bfd_reloc_gp_not_found bfd_reloc_other
1441 #define bfd_reloc_ep_not_found bfd_reloc_continue
1442 #define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1)
1443
1444 /* Perform a relocation as part of a final link. */
1445
1446 static bfd_reloc_status_type
1447 v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
1448 input_section, contents, offset, value,
1449 addend, info, sym_sec, is_local)
1450 reloc_howto_type *howto;
1451 bfd *input_bfd;
1452 bfd *output_bfd ATTRIBUTE_UNUSED;
1453 asection *input_section;
1454 bfd_byte *contents;
1455 bfd_vma offset;
1456 bfd_vma value;
1457 bfd_vma addend;
1458 struct bfd_link_info *info;
1459 asection *sym_sec;
1460 int is_local ATTRIBUTE_UNUSED;
1461 {
1462 unsigned int r_type = howto->type;
1463 bfd_byte *hit_data = contents + offset;
1464
1465 /* Adjust the value according to the relocation. */
1466 switch (r_type)
1467 {
1468 case R_V850_9_PCREL:
1469 value -= (input_section->output_section->vma
1470 + input_section->output_offset);
1471 value -= offset;
1472 break;
1473
1474 case R_V850_22_PCREL:
1475 value -= (input_section->output_section->vma
1476 + input_section->output_offset
1477 + offset);
1478
1479 /* If the sign extension will corrupt the value then we have overflowed. */
1480 if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000))
1481 return bfd_reloc_overflow;
1482
1483 /* Only the bottom 24 bits of the PC are valid */
1484 value = SEXT24 (value);
1485 break;
1486
1487 case R_V850_REL32:
1488 value -= (input_section->output_section->vma
1489 + input_section->output_offset
1490 + offset);
1491 break;
1492
1493 case R_V850_HI16_S:
1494 case R_V850_HI16:
1495 case R_V850_LO16:
1496 case R_V850_16:
1497 case R_V850_ABS32:
1498 case R_V850_8:
1499 break;
1500
1501 case R_V850_ZDA_15_16_OFFSET:
1502 case R_V850_ZDA_16_16_OFFSET:
1503 case R_V850_ZDA_16_16_SPLIT_OFFSET:
1504 if (sym_sec == NULL)
1505 return bfd_reloc_undefined;
1506
1507 value -= sym_sec->output_section->vma;
1508 break;
1509
1510 case R_V850_SDA_15_16_OFFSET:
1511 case R_V850_SDA_16_16_OFFSET:
1512 case R_V850_SDA_16_16_SPLIT_OFFSET:
1513 {
1514 unsigned long gp;
1515 struct bfd_link_hash_entry * h;
1516
1517 if (sym_sec == NULL)
1518 return bfd_reloc_undefined;
1519
1520 /* Get the value of __gp. */
1521 h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE);
1522 if (h == (struct bfd_link_hash_entry *) NULL
1523 || h->type != bfd_link_hash_defined)
1524 return bfd_reloc_gp_not_found;
1525
1526 gp = (h->u.def.value
1527 + h->u.def.section->output_section->vma
1528 + h->u.def.section->output_offset);
1529
1530 value -= sym_sec->output_section->vma;
1531 value -= (gp - sym_sec->output_section->vma);
1532 }
1533 break;
1534
1535 case R_V850_TDA_4_4_OFFSET:
1536 case R_V850_TDA_4_5_OFFSET:
1537 case R_V850_TDA_16_16_OFFSET:
1538 case R_V850_TDA_7_7_OFFSET:
1539 case R_V850_TDA_7_8_OFFSET:
1540 case R_V850_TDA_6_8_OFFSET:
1541 {
1542 unsigned long ep;
1543 struct bfd_link_hash_entry * h;
1544
1545 /* Get the value of __ep. */
1546 h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE);
1547 if (h == (struct bfd_link_hash_entry *) NULL
1548 || h->type != bfd_link_hash_defined)
1549 return bfd_reloc_ep_not_found;
1550
1551 ep = (h->u.def.value
1552 + h->u.def.section->output_section->vma
1553 + h->u.def.section->output_offset);
1554
1555 value -= ep;
1556 }
1557 break;
1558
1559 case R_V850_CALLT_6_7_OFFSET:
1560 {
1561 unsigned long ctbp;
1562 struct bfd_link_hash_entry * h;
1563
1564 /* Get the value of __ctbp. */
1565 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
1566 if (h == (struct bfd_link_hash_entry *) NULL
1567 || h->type != bfd_link_hash_defined)
1568 return bfd_reloc_ctbp_not_found;
1569
1570 ctbp = (h->u.def.value
1571 + h->u.def.section->output_section->vma
1572 + h->u.def.section->output_offset);
1573 value -= ctbp;
1574 }
1575 break;
1576
1577 case R_V850_CALLT_16_16_OFFSET:
1578 {
1579 unsigned long ctbp;
1580 struct bfd_link_hash_entry * h;
1581
1582 if (sym_sec == NULL)
1583 return bfd_reloc_undefined;
1584
1585 /* Get the value of __ctbp. */
1586 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
1587 if (h == (struct bfd_link_hash_entry *) NULL
1588 || h->type != bfd_link_hash_defined)
1589 return bfd_reloc_ctbp_not_found;
1590
1591 ctbp = (h->u.def.value
1592 + h->u.def.section->output_section->vma
1593 + h->u.def.section->output_offset);
1594
1595 value -= sym_sec->output_section->vma;
1596 value -= (ctbp - sym_sec->output_section->vma);
1597 }
1598 break;
1599
1600 case R_V850_NONE:
1601 case R_V850_GNU_VTINHERIT:
1602 case R_V850_GNU_VTENTRY:
1603 case R_V850_LONGCALL:
1604 case R_V850_LONGJUMP:
1605 case R_V850_ALIGN:
1606 return bfd_reloc_ok;
1607
1608 default:
1609 return bfd_reloc_notsupported;
1610 }
1611
1612 /* Perform the relocation. */
1613 return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
1614 }
1615 \f
1616 /* Relocate an V850 ELF section. */
1617
1618 static bfd_boolean
1619 v850_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1620 contents, relocs, local_syms, local_sections)
1621 bfd *output_bfd;
1622 struct bfd_link_info *info;
1623 bfd *input_bfd;
1624 asection *input_section;
1625 bfd_byte *contents;
1626 Elf_Internal_Rela *relocs;
1627 Elf_Internal_Sym *local_syms;
1628 asection **local_sections;
1629 {
1630 Elf_Internal_Shdr *symtab_hdr;
1631 struct elf_link_hash_entry **sym_hashes;
1632 Elf_Internal_Rela *rel;
1633 Elf_Internal_Rela *relend;
1634
1635 if (info->relocatable)
1636 return TRUE;
1637
1638 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1639 sym_hashes = elf_sym_hashes (input_bfd);
1640
1641 if (sym_hashes == NULL)
1642 {
1643 info->callbacks->warning
1644 (info, "no hash table available",
1645 NULL, input_bfd, input_section, (bfd_vma) 0);
1646
1647 return FALSE;
1648 }
1649
1650 /* Reset the list of remembered HI16S relocs to empty. */
1651 free_hi16s = previous_hi16s;
1652 previous_hi16s = NULL;
1653 hi16s_counter = 0;
1654
1655 rel = relocs;
1656 relend = relocs + input_section->reloc_count;
1657 for (; rel < relend; rel++)
1658 {
1659 int r_type;
1660 reloc_howto_type *howto;
1661 unsigned long r_symndx;
1662 Elf_Internal_Sym *sym;
1663 asection *sec;
1664 struct elf_link_hash_entry *h;
1665 bfd_vma relocation;
1666 bfd_reloc_status_type r;
1667
1668 r_symndx = ELF32_R_SYM (rel->r_info);
1669 r_type = ELF32_R_TYPE (rel->r_info);
1670
1671 if (r_type == R_V850_GNU_VTENTRY
1672 || r_type == R_V850_GNU_VTINHERIT)
1673 continue;
1674
1675 /* This is a final link. */
1676 howto = v850_elf_howto_table + r_type;
1677 h = NULL;
1678 sym = NULL;
1679 sec = NULL;
1680 if (r_symndx < symtab_hdr->sh_info)
1681 {
1682 sym = local_syms + r_symndx;
1683 sec = local_sections[r_symndx];
1684 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1685 #if 0
1686 {
1687 char * name;
1688
1689 name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name);
1690 name = (name == NULL) ? "<none>" : name;
1691 fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
1692 sec->name, name, sym->st_name,
1693 sec->output_section->vma, sec->output_offset, sym->st_value, rel->r_addend);
1694 }
1695 #endif
1696 }
1697 else
1698 {
1699 bfd_boolean unresolved_reloc, warned;
1700
1701 RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx, symtab_hdr,
1702 relocation, sec, unresolved_reloc,
1703 info, warned);
1704 }
1705
1706 /* FIXME: We should use the addend, but the COFF relocations don't. */
1707 r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
1708 input_section,
1709 contents, rel->r_offset,
1710 relocation, rel->r_addend,
1711 info, sec, h == NULL);
1712
1713 if (r != bfd_reloc_ok)
1714 {
1715 const char * name;
1716 const char * msg = (const char *)0;
1717
1718 if (h != NULL)
1719 name = h->root.root.string;
1720 else
1721 {
1722 name = (bfd_elf_string_from_elf_section
1723 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1724 if (name == NULL || *name == '\0')
1725 name = bfd_section_name (input_bfd, sec);
1726 }
1727
1728 switch (r)
1729 {
1730 case bfd_reloc_overflow:
1731 if (! ((*info->callbacks->reloc_overflow)
1732 (info, name, howto->name, (bfd_vma) 0,
1733 input_bfd, input_section, rel->r_offset)))
1734 return FALSE;
1735 break;
1736
1737 case bfd_reloc_undefined:
1738 if (! ((*info->callbacks->undefined_symbol)
1739 (info, name, input_bfd, input_section,
1740 rel->r_offset, TRUE)))
1741 return FALSE;
1742 break;
1743
1744 case bfd_reloc_outofrange:
1745 msg = _("internal error: out of range error");
1746 goto common_error;
1747
1748 case bfd_reloc_notsupported:
1749 msg = _("internal error: unsupported relocation error");
1750 goto common_error;
1751
1752 case bfd_reloc_dangerous:
1753 msg = _("internal error: dangerous relocation");
1754 goto common_error;
1755
1756 case bfd_reloc_gp_not_found:
1757 msg = _("could not locate special linker symbol __gp");
1758 goto common_error;
1759
1760 case bfd_reloc_ep_not_found:
1761 msg = _("could not locate special linker symbol __ep");
1762 goto common_error;
1763
1764 case bfd_reloc_ctbp_not_found:
1765 msg = _("could not locate special linker symbol __ctbp");
1766 goto common_error;
1767
1768 default:
1769 msg = _("internal error: unknown error");
1770 /* fall through */
1771
1772 common_error:
1773 if (!((*info->callbacks->warning)
1774 (info, msg, name, input_bfd, input_section,
1775 rel->r_offset)))
1776 return FALSE;
1777 break;
1778 }
1779 }
1780 }
1781
1782 return TRUE;
1783 }
1784
1785 static bfd_boolean
1786 v850_elf_gc_sweep_hook (abfd, info, sec, relocs)
1787 bfd *abfd ATTRIBUTE_UNUSED;
1788 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1789 asection *sec ATTRIBUTE_UNUSED;
1790 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
1791 {
1792 /* No got and plt entries for v850-elf. */
1793 return TRUE;
1794 }
1795
1796 static asection *
1797 v850_elf_gc_mark_hook (sec, info, rel, h, sym)
1798 asection *sec;
1799 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1800 Elf_Internal_Rela *rel;
1801 struct elf_link_hash_entry *h;
1802 Elf_Internal_Sym *sym;
1803 {
1804 if (h != NULL)
1805 {
1806 switch (ELF32_R_TYPE (rel->r_info))
1807 {
1808 case R_V850_GNU_VTINHERIT:
1809 case R_V850_GNU_VTENTRY:
1810 break;
1811
1812 default:
1813 switch (h->root.type)
1814 {
1815 case bfd_link_hash_defined:
1816 case bfd_link_hash_defweak:
1817 return h->root.u.def.section;
1818
1819 case bfd_link_hash_common:
1820 return h->root.u.c.p->section;
1821
1822 default:
1823 break;
1824 }
1825 }
1826 }
1827 else
1828 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1829
1830 return NULL;
1831 }
1832
1833 /* Set the right machine number. */
1834
1835 static bfd_boolean
1836 v850_elf_object_p (abfd)
1837 bfd *abfd;
1838 {
1839 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1840 {
1841 default:
1842 case E_V850_ARCH:
1843 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850);
1844 break;
1845 case E_V850E_ARCH:
1846 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e);
1847 break;
1848 case E_V850E1_ARCH:
1849 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e1);
1850 break;
1851 }
1852 return TRUE;
1853 }
1854
1855 /* Store the machine number in the flags field. */
1856
1857 static void
1858 v850_elf_final_write_processing (abfd, linker)
1859 bfd *abfd;
1860 bfd_boolean linker ATTRIBUTE_UNUSED;
1861 {
1862 unsigned long val;
1863
1864 switch (bfd_get_mach (abfd))
1865 {
1866 default:
1867 case bfd_mach_v850: val = E_V850_ARCH; break;
1868 case bfd_mach_v850e: val = E_V850E_ARCH; break;
1869 case bfd_mach_v850e1: val = E_V850E1_ARCH; break;
1870 }
1871
1872 elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
1873 elf_elfheader (abfd)->e_flags |= val;
1874 }
1875
1876 /* Function to keep V850 specific file flags. */
1877
1878 static bfd_boolean
1879 v850_elf_set_private_flags (abfd, flags)
1880 bfd *abfd;
1881 flagword flags;
1882 {
1883 BFD_ASSERT (!elf_flags_init (abfd)
1884 || elf_elfheader (abfd)->e_flags == flags);
1885
1886 elf_elfheader (abfd)->e_flags = flags;
1887 elf_flags_init (abfd) = TRUE;
1888 return TRUE;
1889 }
1890
1891 /* Merge backend specific data from an object file
1892 to the output object file when linking. */
1893 static bfd_boolean
1894 v850_elf_merge_private_bfd_data (ibfd, obfd)
1895 bfd *ibfd;
1896 bfd *obfd;
1897 {
1898 flagword out_flags;
1899 flagword in_flags;
1900
1901 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1902 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1903 return TRUE;
1904
1905 in_flags = elf_elfheader (ibfd)->e_flags;
1906 out_flags = elf_elfheader (obfd)->e_flags;
1907
1908 if (! elf_flags_init (obfd))
1909 {
1910 /* If the input is the default architecture then do not
1911 bother setting the flags for the output architecture,
1912 instead allow future merges to do this. If no future
1913 merges ever set these flags then they will retain their
1914 unitialised values, which surprise surprise, correspond
1915 to the default values. */
1916 if (bfd_get_arch_info (ibfd)->the_default)
1917 return TRUE;
1918
1919 elf_flags_init (obfd) = TRUE;
1920 elf_elfheader (obfd)->e_flags = in_flags;
1921
1922 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
1923 && bfd_get_arch_info (obfd)->the_default)
1924 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
1925
1926 return TRUE;
1927 }
1928
1929 /* Check flag compatibility. */
1930 if (in_flags == out_flags)
1931 return TRUE;
1932
1933 if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH)
1934 && (in_flags & EF_V850_ARCH) != E_V850_ARCH)
1935 {
1936 /* Allow v850e1 binaries to be linked with v850e binaries.
1937 Set the output binary to v850e. */
1938 if ((in_flags & EF_V850_ARCH) == E_V850E1_ARCH
1939 && (out_flags & EF_V850_ARCH) == E_V850E_ARCH)
1940 return TRUE;
1941
1942 if ((in_flags & EF_V850_ARCH) == E_V850E_ARCH
1943 && (out_flags & EF_V850_ARCH) == E_V850E1_ARCH)
1944 {
1945 elf_elfheader (obfd)->e_flags =
1946 ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH);
1947 return TRUE;
1948 }
1949
1950 _bfd_error_handler (_("%s: Architecture mismatch with previous modules"),
1951 bfd_archive_filename (ibfd));
1952 }
1953
1954 return TRUE;
1955 }
1956
1957 /* Display the flags field. */
1958
1959 static bfd_boolean
1960 v850_elf_print_private_bfd_data (abfd, ptr)
1961 bfd *abfd;
1962 PTR ptr;
1963 {
1964 FILE * file = (FILE *) ptr;
1965
1966 BFD_ASSERT (abfd != NULL && ptr != NULL);
1967
1968 _bfd_elf_print_private_bfd_data (abfd, ptr);
1969
1970 /* xgettext:c-format */
1971 fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
1972
1973 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1974 {
1975 default:
1976 case E_V850_ARCH: fprintf (file, _("v850 architecture")); break;
1977 case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
1978 case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break;
1979 }
1980
1981 fputc ('\n', file);
1982
1983 return TRUE;
1984 }
1985
1986 /* V850 ELF uses four common sections. One is the usual one, and the
1987 others are for (small) objects in one of the special data areas:
1988 small, tiny and zero. All the objects are kept together, and then
1989 referenced via the gp register, the ep register or the r0 register
1990 respectively, which yields smaller, faster assembler code. This
1991 approach is copied from elf32-mips.c. */
1992
1993 static asection v850_elf_scom_section;
1994 static asymbol v850_elf_scom_symbol;
1995 static asymbol * v850_elf_scom_symbol_ptr;
1996 static asection v850_elf_tcom_section;
1997 static asymbol v850_elf_tcom_symbol;
1998 static asymbol * v850_elf_tcom_symbol_ptr;
1999 static asection v850_elf_zcom_section;
2000 static asymbol v850_elf_zcom_symbol;
2001 static asymbol * v850_elf_zcom_symbol_ptr;
2002
2003 /* Given a BFD section, try to locate the
2004 corresponding ELF section index. */
2005
2006 static bfd_boolean
2007 v850_elf_section_from_bfd_section (abfd, sec, retval)
2008 bfd *abfd ATTRIBUTE_UNUSED;
2009 asection *sec;
2010 int *retval;
2011 {
2012 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
2013 *retval = SHN_V850_SCOMMON;
2014 else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
2015 *retval = SHN_V850_TCOMMON;
2016 else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
2017 *retval = SHN_V850_ZCOMMON;
2018 else
2019 return FALSE;
2020
2021 return TRUE;
2022 }
2023
2024 /* Handle the special V850 section numbers that a symbol may use. */
2025
2026 static void
2027 v850_elf_symbol_processing (abfd, asym)
2028 bfd *abfd;
2029 asymbol *asym;
2030 {
2031 elf_symbol_type * elfsym = (elf_symbol_type *) asym;
2032 unsigned int indx;
2033
2034 indx = elfsym->internal_elf_sym.st_shndx;
2035
2036 /* If the section index is an "ordinary" index, then it may
2037 refer to a v850 specific section created by the assembler.
2038 Check the section's type and change the index it matches.
2039
2040 FIXME: Should we alter the st_shndx field as well ? */
2041
2042 if (indx < elf_numsections (abfd))
2043 switch (elf_elfsections(abfd)[indx]->sh_type)
2044 {
2045 case SHT_V850_SCOMMON:
2046 indx = SHN_V850_SCOMMON;
2047 break;
2048
2049 case SHT_V850_TCOMMON:
2050 indx = SHN_V850_TCOMMON;
2051 break;
2052
2053 case SHT_V850_ZCOMMON:
2054 indx = SHN_V850_ZCOMMON;
2055 break;
2056
2057 default:
2058 break;
2059 }
2060
2061 switch (indx)
2062 {
2063 case SHN_V850_SCOMMON:
2064 if (v850_elf_scom_section.name == NULL)
2065 {
2066 /* Initialize the small common section. */
2067 v850_elf_scom_section.name = ".scommon";
2068 v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
2069 v850_elf_scom_section.output_section = & v850_elf_scom_section;
2070 v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
2071 v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
2072 v850_elf_scom_symbol.name = ".scommon";
2073 v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
2074 v850_elf_scom_symbol.section = & v850_elf_scom_section;
2075 v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
2076 }
2077 asym->section = & v850_elf_scom_section;
2078 asym->value = elfsym->internal_elf_sym.st_size;
2079 break;
2080
2081 case SHN_V850_TCOMMON:
2082 if (v850_elf_tcom_section.name == NULL)
2083 {
2084 /* Initialize the tcommon section. */
2085 v850_elf_tcom_section.name = ".tcommon";
2086 v850_elf_tcom_section.flags = SEC_IS_COMMON;
2087 v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
2088 v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
2089 v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
2090 v850_elf_tcom_symbol.name = ".tcommon";
2091 v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
2092 v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
2093 v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
2094 }
2095 asym->section = & v850_elf_tcom_section;
2096 asym->value = elfsym->internal_elf_sym.st_size;
2097 break;
2098
2099 case SHN_V850_ZCOMMON:
2100 if (v850_elf_zcom_section.name == NULL)
2101 {
2102 /* Initialize the zcommon section. */
2103 v850_elf_zcom_section.name = ".zcommon";
2104 v850_elf_zcom_section.flags = SEC_IS_COMMON;
2105 v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
2106 v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
2107 v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
2108 v850_elf_zcom_symbol.name = ".zcommon";
2109 v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
2110 v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
2111 v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
2112 }
2113 asym->section = & v850_elf_zcom_section;
2114 asym->value = elfsym->internal_elf_sym.st_size;
2115 break;
2116 }
2117 }
2118
2119 /* Hook called by the linker routine which adds symbols from an object
2120 file. We must handle the special v850 section numbers here. */
2121
2122 static bfd_boolean
2123 v850_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2124 bfd *abfd;
2125 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2126 const Elf_Internal_Sym *sym;
2127 const char **namep ATTRIBUTE_UNUSED;
2128 flagword *flagsp ATTRIBUTE_UNUSED;
2129 asection **secp;
2130 bfd_vma *valp;
2131 {
2132 unsigned int indx = sym->st_shndx;
2133
2134 /* If the section index is an "ordinary" index, then it may
2135 refer to a v850 specific section created by the assembler.
2136 Check the section's type and change the index it matches.
2137
2138 FIXME: Should we alter the st_shndx field as well ? */
2139
2140 if (indx < elf_numsections (abfd))
2141 switch (elf_elfsections(abfd)[indx]->sh_type)
2142 {
2143 case SHT_V850_SCOMMON:
2144 indx = SHN_V850_SCOMMON;
2145 break;
2146
2147 case SHT_V850_TCOMMON:
2148 indx = SHN_V850_TCOMMON;
2149 break;
2150
2151 case SHT_V850_ZCOMMON:
2152 indx = SHN_V850_ZCOMMON;
2153 break;
2154
2155 default:
2156 break;
2157 }
2158
2159 switch (indx)
2160 {
2161 case SHN_V850_SCOMMON:
2162 *secp = bfd_make_section_old_way (abfd, ".scommon");
2163 (*secp)->flags |= SEC_IS_COMMON;
2164 *valp = sym->st_size;
2165 break;
2166
2167 case SHN_V850_TCOMMON:
2168 *secp = bfd_make_section_old_way (abfd, ".tcommon");
2169 (*secp)->flags |= SEC_IS_COMMON;
2170 *valp = sym->st_size;
2171 break;
2172
2173 case SHN_V850_ZCOMMON:
2174 *secp = bfd_make_section_old_way (abfd, ".zcommon");
2175 (*secp)->flags |= SEC_IS_COMMON;
2176 *valp = sym->st_size;
2177 break;
2178 }
2179
2180 return TRUE;
2181 }
2182
2183 static bfd_boolean
2184 v850_elf_link_output_symbol_hook (info, name, sym, input_sec, h)
2185 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2186 const char *name ATTRIBUTE_UNUSED;
2187 Elf_Internal_Sym *sym;
2188 asection *input_sec;
2189 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED;
2190 {
2191 /* If we see a common symbol, which implies a relocatable link, then
2192 if a symbol was in a special common section in an input file, mark
2193 it as a special common in the output file. */
2194
2195 if (sym->st_shndx == SHN_COMMON)
2196 {
2197 if (strcmp (input_sec->name, ".scommon") == 0)
2198 sym->st_shndx = SHN_V850_SCOMMON;
2199 else if (strcmp (input_sec->name, ".tcommon") == 0)
2200 sym->st_shndx = SHN_V850_TCOMMON;
2201 else if (strcmp (input_sec->name, ".zcommon") == 0)
2202 sym->st_shndx = SHN_V850_ZCOMMON;
2203 }
2204
2205 return TRUE;
2206 }
2207
2208 static bfd_boolean
2209 v850_elf_section_from_shdr (abfd, hdr, name)
2210 bfd *abfd;
2211 Elf_Internal_Shdr *hdr;
2212 const char *name;
2213 {
2214 /* There ought to be a place to keep ELF backend specific flags, but
2215 at the moment there isn't one. We just keep track of the
2216 sections by their name, instead. */
2217
2218 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
2219 return FALSE;
2220
2221 switch (hdr->sh_type)
2222 {
2223 case SHT_V850_SCOMMON:
2224 case SHT_V850_TCOMMON:
2225 case SHT_V850_ZCOMMON:
2226 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2227 (bfd_get_section_flags (abfd,
2228 hdr->bfd_section)
2229 | SEC_IS_COMMON)))
2230 return FALSE;
2231 }
2232
2233 return TRUE;
2234 }
2235
2236 /* Set the correct type for a V850 ELF section. We do this
2237 by the section name, which is a hack, but ought to work. */
2238
2239 static bfd_boolean
2240 v850_elf_fake_sections (abfd, hdr, sec)
2241 bfd *abfd ATTRIBUTE_UNUSED;
2242 Elf_Internal_Shdr *hdr;
2243 asection *sec;
2244 {
2245 register const char * name;
2246
2247 name = bfd_get_section_name (abfd, sec);
2248
2249 if (strcmp (name, ".scommon") == 0)
2250 {
2251 hdr->sh_type = SHT_V850_SCOMMON;
2252 }
2253 else if (strcmp (name, ".tcommon") == 0)
2254 {
2255 hdr->sh_type = SHT_V850_TCOMMON;
2256 }
2257 else if (strcmp (name, ".zcommon") == 0)
2258 hdr->sh_type = SHT_V850_ZCOMMON;
2259
2260 return TRUE;
2261 }
2262
2263 /* Delete some bytes from a section while relaxing. */
2264
2265 static bfd_boolean
2266 v850_elf_relax_delete_bytes (abfd, sec, addr, toaddr, count)
2267 bfd *abfd;
2268 asection *sec;
2269 bfd_vma addr;
2270 bfd_vma toaddr;
2271 int count;
2272 {
2273 Elf_Internal_Shdr *symtab_hdr;
2274 Elf32_External_Sym *extsyms;
2275 Elf32_External_Sym *esym;
2276 Elf32_External_Sym *esymend;
2277 int index;
2278 unsigned int sec_shndx;
2279 bfd_byte *contents;
2280 Elf_Internal_Rela *irel;
2281 Elf_Internal_Rela *irelend;
2282 struct elf_link_hash_entry *sym_hash;
2283 Elf_Internal_Shdr *shndx_hdr;
2284 Elf_External_Sym_Shndx *shndx;
2285
2286 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2287 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2288
2289 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2290
2291 contents = elf_section_data (sec)->this_hdr.contents;
2292
2293 /* The deletion must stop at the next ALIGN reloc for an alignment
2294 power larger than the number of bytes we are deleting. */
2295
2296 /* Actually delete the bytes. */
2297 #if (DEBUG_RELAX & 2)
2298 fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n",
2299 sec->name, addr, toaddr, count );
2300 #endif
2301 memmove (contents + addr, contents + addr + count,
2302 toaddr - addr - count);
2303 memset (contents + toaddr-count, 0, count);
2304
2305 /* Adjust all the relocs. */
2306 irel = elf_section_data (sec)->relocs;
2307 irelend = irel + sec->reloc_count;
2308 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2309 shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
2310
2311 for (; irel < irelend; irel++)
2312 {
2313 bfd_vma raddr, paddr, symval;
2314 Elf_Internal_Sym isym;
2315
2316 /* Get the new reloc address. */
2317 raddr = irel->r_offset;
2318 if ((raddr >= (addr + count) && raddr < toaddr))
2319 irel->r_offset -= count;
2320
2321 if (raddr >= addr && raddr < addr + count)
2322 {
2323 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2324 (int) R_V850_NONE);
2325 continue;
2326 }
2327
2328 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN)
2329 continue;
2330
2331 bfd_elf32_swap_symbol_in (abfd,
2332 extsyms + ELF32_R_SYM (irel->r_info),
2333 shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL,
2334 & isym);
2335
2336 if (isym.st_shndx != sec_shndx)
2337 continue;
2338
2339 /* Get the value of the symbol referred to by the reloc. */
2340 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2341 {
2342 symval = isym.st_value;
2343 #if (DEBUG_RELAX & 2)
2344 {
2345 char * name = bfd_elf_string_from_elf_section
2346 (abfd, symtab_hdr->sh_link, isym.st_name);
2347 fprintf (stderr,
2348 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2349 sec->name, name, isym.st_name,
2350 sec->output_section->vma, sec->output_offset,
2351 isym.st_value, irel->r_addend);
2352 }
2353 #endif
2354 }
2355 else
2356 {
2357 unsigned long indx;
2358 struct elf_link_hash_entry * h;
2359
2360 /* An external symbol. */
2361 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2362
2363 h = elf_sym_hashes (abfd) [indx];
2364 BFD_ASSERT (h != NULL);
2365
2366 symval = h->root.u.def.value;
2367 #if (DEBUG_RELAX & 2)
2368 fprintf (stderr,
2369 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2370 sec->name, h->root.root.string, h->root.u.def.value,
2371 sec->output_section->vma, sec->output_offset, irel->r_addend);
2372 #endif
2373 }
2374
2375 paddr = symval + irel->r_addend;
2376
2377 if ( (symval >= addr + count && symval < toaddr)
2378 && (paddr < addr + count || paddr >= toaddr))
2379 irel->r_addend += count;
2380 else if ( (symval < addr + count || symval >= toaddr)
2381 && (paddr >= addr + count && paddr < toaddr))
2382 irel->r_addend -= count;
2383 }
2384
2385 /* Adjust the local symbols defined in this section. */
2386 esym = extsyms;
2387 esymend = esym + symtab_hdr->sh_info;
2388
2389 for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
2390 {
2391 Elf_Internal_Sym isym;
2392
2393 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2394
2395 if (isym.st_shndx == sec_shndx
2396 && isym.st_value >= addr + count
2397 && isym.st_value < toaddr)
2398 {
2399 isym.st_value -= count;
2400
2401 if (isym.st_value + isym.st_size >= toaddr)
2402 isym.st_size += count;
2403
2404 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2405 }
2406 else if (isym.st_shndx == sec_shndx
2407 && isym.st_value < addr + count)
2408 {
2409 if (isym.st_value+isym.st_size >= addr + count
2410 && isym.st_value+isym.st_size < toaddr)
2411 isym.st_size -= count;
2412
2413 if (isym.st_value >= addr
2414 && isym.st_value < addr + count)
2415 isym.st_value = addr;
2416
2417 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2418 }
2419 }
2420
2421 /* Now adjust the global symbols defined in this section. */
2422 esym = extsyms + symtab_hdr->sh_info;
2423 esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
2424
2425 for (index = 0; esym < esymend; esym ++, index ++)
2426 {
2427 Elf_Internal_Sym isym;
2428
2429 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2430 sym_hash = elf_sym_hashes (abfd) [index];
2431
2432 if (isym.st_shndx == sec_shndx
2433 && ((sym_hash)->root.type == bfd_link_hash_defined
2434 || (sym_hash)->root.type == bfd_link_hash_defweak)
2435 && (sym_hash)->root.u.def.section == sec
2436 && (sym_hash)->root.u.def.value >= addr + count
2437 && (sym_hash)->root.u.def.value < toaddr)
2438 {
2439 if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr)
2440 {
2441 isym.st_size += count;
2442 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2443 }
2444
2445 (sym_hash)->root.u.def.value -= count;
2446 }
2447 else if (isym.st_shndx == sec_shndx
2448 && ((sym_hash)->root.type == bfd_link_hash_defined
2449 || (sym_hash)->root.type == bfd_link_hash_defweak)
2450 && (sym_hash)->root.u.def.section == sec
2451 && (sym_hash)->root.u.def.value < addr + count)
2452 {
2453 if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count
2454 && (sym_hash)->root.u.def.value+isym.st_size < toaddr)
2455 isym.st_size -= count;
2456
2457 if ((sym_hash)->root.u.def.value >= addr
2458 && (sym_hash)->root.u.def.value < addr + count)
2459 (sym_hash)->root.u.def.value = addr;
2460
2461 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2462 }
2463
2464 if (shndx)
2465 ++ shndx;
2466 }
2467
2468 return TRUE;
2469 }
2470
2471 #define NOP_OPCODE (0x0000)
2472 #define MOVHI 0x0640 /* 4byte */
2473 #define MOVHI_MASK 0x07e0
2474 #define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */
2475 #define MOVHI_R2(insn) ((insn) >> 11)
2476 #define MOVEA 0x0620 /* 2byte */
2477 #define MOVEA_MASK 0x07e0
2478 #define MOVEA_R1(insn) ((insn) & 0x1f)
2479 #define MOVEA_R2(insn) ((insn) >> 11)
2480 #define JARL_4 0x00040780 /* 4byte */
2481 #define JARL_4_MASK 0xFFFF07FF
2482 #define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
2483 #define ADD_I 0x0240 /* 2byte */
2484 #define ADD_I_MASK 0x07e0
2485 #define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */
2486 #define ADD_R2(insn) ((insn) >> 11)
2487 #define JMP_R 0x0060 /* 2byte */
2488 #define JMP_R_MASK 0xFFE0
2489 #define JMP_R1(insn) ((insn) & 0x1f)
2490
2491 static bfd_boolean
2492 v850_elf_relax_section (abfd, sec, link_info, again)
2493 bfd *abfd;
2494 asection *sec;
2495 struct bfd_link_info *link_info;
2496 bfd_boolean *again;
2497 {
2498 Elf_Internal_Shdr *symtab_hdr;
2499 Elf_Internal_Rela *internal_relocs;
2500 Elf_Internal_Rela *irel;
2501 Elf_Internal_Rela *irelend;
2502 Elf_Internal_Rela *irelalign = NULL;
2503 Elf_Internal_Sym *isymbuf = NULL;
2504 bfd_byte *contents = NULL;
2505 bfd_vma addr = 0;
2506 bfd_vma toaddr;
2507 int align_pad_size = 0;
2508 bfd_boolean result = TRUE;
2509
2510 *again = FALSE;
2511
2512 if (link_info->relocatable
2513 || (sec->flags & SEC_RELOC) == 0
2514 || sec->reloc_count == 0)
2515 return TRUE;
2516
2517 /* If this is the first time we have been called
2518 for this section, initialize the cooked size. */
2519 if (sec->_cooked_size == 0)
2520 sec->_cooked_size = sec->_raw_size;
2521
2522 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2523
2524 internal_relocs = (_bfd_elf_link_read_relocs
2525 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2526 link_info->keep_memory));
2527 if (internal_relocs == NULL)
2528 goto error_return;
2529
2530 irelend = internal_relocs + sec->reloc_count;
2531
2532 while (addr < sec->_cooked_size)
2533 {
2534 toaddr = sec->_cooked_size;
2535
2536 for (irel = internal_relocs; irel < irelend; irel ++)
2537 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2538 && irel->r_offset > addr
2539 && irel->r_offset < toaddr)
2540 toaddr = irel->r_offset;
2541
2542 #ifdef DEBUG_RELAX
2543 fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n",
2544 addr, toaddr, align_pad_size);
2545 #endif
2546 if (irelalign)
2547 {
2548 bfd_vma alignto;
2549 bfd_vma alignmoveto;
2550
2551 alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend);
2552 alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend);
2553
2554 if (alignmoveto < alignto)
2555 {
2556 unsigned int i;
2557
2558 align_pad_size = alignto - alignmoveto;
2559 #ifdef DEBUG_RELAX
2560 fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n",
2561 alignmoveto, toaddr, align_pad_size);
2562 #endif
2563 if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto,
2564 toaddr, align_pad_size))
2565 goto error_return;
2566
2567 for (i = BFD_ALIGN (toaddr - align_pad_size, 1);
2568 (i + 1) < toaddr; i += 2)
2569 bfd_put_16 (abfd, NOP_OPCODE, contents + i);
2570
2571 addr = alignmoveto;
2572 }
2573 else
2574 align_pad_size = 0;
2575 }
2576
2577 for (irel = internal_relocs; irel < irelend; irel++)
2578 {
2579 bfd_vma laddr;
2580 bfd_vma addend;
2581 bfd_vma symval;
2582 int insn[5];
2583 int no_match = -1;
2584 Elf_Internal_Rela *hi_irelfn;
2585 Elf_Internal_Rela *lo_irelfn;
2586 Elf_Internal_Rela *irelcall;
2587 bfd_signed_vma foff;
2588
2589 if (! (irel->r_offset >= addr && irel->r_offset < toaddr
2590 && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL
2591 || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)))
2592 continue;
2593
2594 #ifdef DEBUG_RELAX
2595 fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
2596 irel->r_info,
2597 irel->r_offset,
2598 irel->r_addend );
2599 #endif
2600
2601 /* Get the section contents. */
2602 if (contents == NULL)
2603 {
2604 if (elf_section_data (sec)->this_hdr.contents != NULL)
2605 contents = elf_section_data (sec)->this_hdr.contents;
2606 else
2607 {
2608 contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
2609 if (contents == NULL)
2610 goto error_return;
2611
2612 if (! bfd_get_section_contents (abfd, sec, contents,
2613 (file_ptr) 0, sec->_raw_size))
2614 goto error_return;
2615 }
2616 }
2617
2618 /* Read this BFD's local symbols if we haven't done so already. */
2619 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2620 {
2621 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2622 if (isymbuf == NULL)
2623 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2624 symtab_hdr->sh_info, 0,
2625 NULL, NULL, NULL);
2626 if (isymbuf == NULL)
2627 goto error_return;
2628 }
2629
2630 laddr = irel->r_offset;
2631
2632 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL)
2633 {
2634 /* Check code for -mlong-calls output. */
2635 if (laddr + 16 <= (bfd_vma) sec->_raw_size)
2636 {
2637 insn[0] = bfd_get_16 (abfd, contents + laddr);
2638 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2639 insn[2] = bfd_get_32 (abfd, contents + laddr + 8);
2640 insn[3] = bfd_get_16 (abfd, contents + laddr + 12);
2641 insn[4] = bfd_get_16 (abfd, contents + laddr + 14);
2642
2643 if ((insn[0] & MOVHI_MASK) != MOVHI
2644 || MOVHI_R1 (insn[0]) != 0)
2645 no_match = 0;
2646
2647 if (no_match < 0
2648 && ((insn[1] & MOVEA_MASK) != MOVEA
2649 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2650 no_match = 1;
2651
2652 if (no_match < 0
2653 && (insn[2] & JARL_4_MASK) != JARL_4)
2654 no_match = 2;
2655
2656 if (no_match < 0
2657 && ((insn[3] & ADD_I_MASK) != ADD_I
2658 || ADD_I5 (insn[3]) != 4
2659 || JARL_R2 (insn[2]) != ADD_R2 (insn[3])))
2660 no_match = 3;
2661
2662 if (no_match < 0
2663 && ((insn[4] & JMP_R_MASK) != JMP_R
2664 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4])))
2665 no_match = 4;
2666 }
2667 else
2668 {
2669 ((*_bfd_error_handler)
2670 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
2671 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2672
2673 continue;
2674 }
2675
2676 if (no_match >= 0)
2677 {
2678 ((*_bfd_error_handler)
2679 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
2680 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2681
2682 continue;
2683 }
2684
2685 /* Get the reloc for the address from which the register is
2686 being loaded. This reloc will tell us which function is
2687 actually being called. */
2688 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2689 if (hi_irelfn->r_offset == laddr + 2
2690 && ELF32_R_TYPE (hi_irelfn->r_info)
2691 == (int) R_V850_HI16_S)
2692 break;
2693
2694 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2695 if (lo_irelfn->r_offset == laddr + 6
2696 && ELF32_R_TYPE (lo_irelfn->r_info)
2697 == (int) R_V850_LO16)
2698 break;
2699
2700 for (irelcall = internal_relocs; irelcall < irelend; irelcall ++)
2701 if (irelcall->r_offset == laddr + 8
2702 && ELF32_R_TYPE (irelcall->r_info)
2703 == (int) R_V850_22_PCREL)
2704 break;
2705
2706 if ( hi_irelfn == irelend
2707 || lo_irelfn == irelend
2708 || irelcall == irelend)
2709 {
2710 ((*_bfd_error_handler)
2711 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
2712 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2713
2714 continue;
2715 }
2716
2717 if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info)
2718 {
2719 Elf_Internal_Sym * isym;
2720
2721 /* A local symbol. */
2722 isym = isymbuf + ELF32_R_SYM (irelcall->r_info);
2723
2724 symval = isym->st_value;
2725 }
2726 else
2727 {
2728 unsigned long indx;
2729 struct elf_link_hash_entry * h;
2730
2731 /* An external symbol. */
2732 indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info;
2733 h = elf_sym_hashes (abfd)[indx];
2734 BFD_ASSERT (h != NULL);
2735
2736 if ( h->root.type != bfd_link_hash_defined
2737 && h->root.type != bfd_link_hash_defweak)
2738 /* This appears to be a reference to an undefined
2739 symbol. Just ignore it--it will be caught by the
2740 regular reloc processing. */
2741 continue;
2742
2743 symval = h->root.u.def.value;
2744 }
2745
2746 if (symval + irelcall->r_addend != irelcall->r_offset + 4)
2747 {
2748 ((*_bfd_error_handler)
2749 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
2750 bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset ));
2751
2752 continue;
2753 }
2754
2755 /* Get the value of the symbol referred to by the reloc. */
2756 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2757 {
2758 Elf_Internal_Sym *isym;
2759 asection *sym_sec;
2760
2761 /* A local symbol. */
2762 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2763
2764 if (isym->st_shndx == SHN_UNDEF)
2765 sym_sec = bfd_und_section_ptr;
2766 else if (isym->st_shndx == SHN_ABS)
2767 sym_sec = bfd_abs_section_ptr;
2768 else if (isym->st_shndx == SHN_COMMON)
2769 sym_sec = bfd_com_section_ptr;
2770 else
2771 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2772 symval = (isym->st_value
2773 + sym_sec->output_section->vma
2774 + sym_sec->output_offset);
2775 }
2776 else
2777 {
2778 unsigned long indx;
2779 struct elf_link_hash_entry *h;
2780
2781 /* An external symbol. */
2782 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
2783 h = elf_sym_hashes (abfd)[indx];
2784 BFD_ASSERT (h != NULL);
2785
2786 if ( h->root.type != bfd_link_hash_defined
2787 && h->root.type != bfd_link_hash_defweak)
2788 /* This appears to be a reference to an undefined
2789 symbol. Just ignore it--it will be caught by the
2790 regular reloc processing. */
2791 continue;
2792
2793 symval = (h->root.u.def.value
2794 + h->root.u.def.section->output_section->vma
2795 + h->root.u.def.section->output_offset);
2796 }
2797
2798 addend = irel->r_addend;
2799
2800 foff = (symval + addend
2801 - (irel->r_offset
2802 + sec->output_section->vma
2803 + sec->output_offset
2804 + 4));
2805 #ifdef DEBUG_RELAX
2806 fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2807 irel->r_offset,
2808 (irel->r_offset
2809 + sec->output_section->vma
2810 + sec->output_offset),
2811 symval, addend, foff);
2812 #endif
2813
2814 if (foff < -0x100000 || foff >= 0x100000)
2815 /* After all that work, we can't shorten this function call. */
2816 continue;
2817
2818 /* For simplicity of coding, we are going to modify the section
2819 contents, the section relocs, and the BFD symbol table. We
2820 must tell the rest of the code not to free up this
2821 information. It would be possible to instead create a table
2822 of changes which have to be made, as is done in coff-mips.c;
2823 that would be more work, but would require less memory when
2824 the linker is run. */
2825 elf_section_data (sec)->relocs = internal_relocs;
2826 elf_section_data (sec)->this_hdr.contents = contents;
2827 symtab_hdr->contents = (bfd_byte *) isymbuf;
2828
2829 /* Replace the long call with a jarl. */
2830 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL);
2831
2832 addend = 0;
2833
2834 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2835 /* If this needs to be changed because of future relaxing,
2836 it will be handled here like other internal IND12W
2837 relocs. */
2838 bfd_put_32 (abfd,
2839 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf),
2840 contents + irel->r_offset);
2841 else
2842 /* We can't fully resolve this yet, because the external
2843 symbol value may be changed by future relaxing.
2844 We let the final link phase handle it. */
2845 bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11),
2846 contents + irel->r_offset);
2847
2848 hi_irelfn->r_info =
2849 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2850 lo_irelfn->r_info =
2851 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2852 irelcall->r_info =
2853 ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE);
2854
2855 if (! v850_elf_relax_delete_bytes (abfd, sec,
2856 irel->r_offset + 4, toaddr, 12))
2857 goto error_return;
2858
2859 align_pad_size += 12;
2860 }
2861 else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)
2862 {
2863 /* Check code for -mlong-jumps output. */
2864 if (laddr + 10 <= (bfd_vma) sec->_raw_size)
2865 {
2866 insn[0] = bfd_get_16 (abfd, contents + laddr);
2867 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2868 insn[2] = bfd_get_16 (abfd, contents + laddr + 8);
2869
2870 if ((insn[0] & MOVHI_MASK) != MOVHI
2871 || MOVHI_R1 (insn[0]) != 0)
2872 no_match = 0;
2873
2874 if (no_match < 0
2875 && ((insn[1] & MOVEA_MASK) != MOVEA
2876 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2877 no_match = 1;
2878
2879 if (no_match < 0
2880 && ((insn[2] & JMP_R_MASK) != JMP_R
2881 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2])))
2882 no_match = 4;
2883 }
2884 else
2885 {
2886 ((*_bfd_error_handler)
2887 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
2888 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2889
2890 continue;
2891 }
2892
2893 if (no_match >= 0)
2894 {
2895 ((*_bfd_error_handler)
2896 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
2897 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2898
2899 continue;
2900 }
2901
2902 /* Get the reloc for the address from which the register is
2903 being loaded. This reloc will tell us which function is
2904 actually being called. */
2905 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2906 if (hi_irelfn->r_offset == laddr + 2
2907 && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S)
2908 break;
2909
2910 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2911 if (lo_irelfn->r_offset == laddr + 6
2912 && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16)
2913 break;
2914
2915 if ( hi_irelfn == irelend
2916 || lo_irelfn == irelend)
2917 {
2918 ((*_bfd_error_handler)
2919 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
2920 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2921
2922 continue;
2923 }
2924
2925 /* Get the value of the symbol referred to by the reloc. */
2926 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2927 {
2928 Elf_Internal_Sym * isym;
2929 asection * sym_sec;
2930
2931 /* A local symbol. */
2932 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2933
2934 if (isym->st_shndx == SHN_UNDEF)
2935 sym_sec = bfd_und_section_ptr;
2936 else if (isym->st_shndx == SHN_ABS)
2937 sym_sec = bfd_abs_section_ptr;
2938 else if (isym->st_shndx == SHN_COMMON)
2939 sym_sec = bfd_com_section_ptr;
2940 else
2941 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2942 symval = (isym->st_value
2943 + sym_sec->output_section->vma
2944 + sym_sec->output_offset);
2945 #ifdef DEBUG_RELAX
2946 {
2947 char * name = bfd_elf_string_from_elf_section
2948 (abfd, symtab_hdr->sh_link, isym->st_name);
2949
2950 fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2951 sym_sec->name, name, isym->st_name,
2952 sym_sec->output_section->vma,
2953 sym_sec->output_offset,
2954 isym->st_value, irel->r_addend);
2955 }
2956 #endif
2957 }
2958 else
2959 {
2960 unsigned long indx;
2961 struct elf_link_hash_entry * h;
2962
2963 /* An external symbol. */
2964 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2965 h = elf_sym_hashes (abfd)[indx];
2966 BFD_ASSERT (h != NULL);
2967
2968 if ( h->root.type != bfd_link_hash_defined
2969 && h->root.type != bfd_link_hash_defweak)
2970 /* This appears to be a reference to an undefined
2971 symbol. Just ignore it--it will be caught by the
2972 regular reloc processing. */
2973 continue;
2974
2975 symval = (h->root.u.def.value
2976 + h->root.u.def.section->output_section->vma
2977 + h->root.u.def.section->output_offset);
2978 #ifdef DEBUG_RELAX
2979 fprintf (stderr,
2980 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2981 sec->name, h->root.root.string, h->root.u.def.value,
2982 sec->output_section->vma, sec->output_offset, irel->r_addend);
2983 #endif
2984 }
2985
2986 addend = irel->r_addend;
2987
2988 foff = (symval + addend
2989 - (irel->r_offset
2990 + sec->output_section->vma
2991 + sec->output_offset
2992 + 4));
2993 #ifdef DEBUG_RELAX
2994 fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2995 irel->r_offset,
2996 (irel->r_offset
2997 + sec->output_section->vma
2998 + sec->output_offset),
2999 symval, addend, foff);
3000 #endif
3001 if (foff < -0x100000 || foff >= 0x100000)
3002 /* After all that work, we can't shorten this function call. */
3003 continue;
3004
3005 /* For simplicity of coding, we are going to modify the section
3006 contents, the section relocs, and the BFD symbol table. We
3007 must tell the rest of the code not to free up this
3008 information. It would be possible to instead create a table
3009 of changes which have to be made, as is done in coff-mips.c;
3010 that would be more work, but would require less memory when
3011 the linker is run. */
3012 elf_section_data (sec)->relocs = internal_relocs;
3013 elf_section_data (sec)->this_hdr.contents = contents;
3014 symtab_hdr->contents = (bfd_byte *) isymbuf;
3015
3016 if (foff < -0x100 || foff >= 0x100)
3017 {
3018 /* Replace the long jump with a jr. */
3019
3020 irel->r_info =
3021 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL);
3022
3023 irel->r_addend = addend;
3024 addend = 0;
3025
3026 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3027 /* If this needs to be changed because of future relaxing,
3028 it will be handled here like other internal IND12W
3029 relocs. */
3030 bfd_put_32 (abfd,
3031 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf),
3032 contents + irel->r_offset);
3033 else
3034 /* We can't fully resolve this yet, because the external
3035 symbol value may be changed by future relaxing.
3036 We let the final link phase handle it. */
3037 bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset);
3038
3039 hi_irelfn->r_info =
3040 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3041 lo_irelfn->r_info =
3042 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3043 if (!v850_elf_relax_delete_bytes (abfd, sec,
3044 irel->r_offset + 4, toaddr, 6))
3045 goto error_return;
3046
3047 align_pad_size += 6;
3048 }
3049 else
3050 {
3051 /* Replace the long jump with a br. */
3052
3053 irel->r_info =
3054 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL);
3055
3056 irel->r_addend = addend;
3057 addend = 0;
3058
3059 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3060 /* If this needs to be changed because of future relaxing,
3061 it will be handled here like other internal IND12W
3062 relocs. */
3063 bfd_put_16 (abfd,
3064 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070),
3065 contents + irel->r_offset);
3066 else
3067 /* We can't fully resolve this yet, because the external
3068 symbol value may be changed by future relaxing.
3069 We let the final link phase handle it. */
3070 bfd_put_16 (abfd, 0x0585, contents + irel->r_offset);
3071
3072 hi_irelfn->r_info =
3073 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3074 lo_irelfn->r_info =
3075 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3076 if (!v850_elf_relax_delete_bytes (abfd, sec,
3077 irel->r_offset + 2, toaddr, 8))
3078 goto error_return;
3079
3080 align_pad_size += 8;
3081 }
3082 }
3083 }
3084
3085 irelalign = NULL;
3086 for (irel = internal_relocs; irel < irelend; irel++)
3087 {
3088 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
3089 && irel->r_offset == toaddr)
3090 {
3091 irel->r_offset -= align_pad_size;
3092
3093 if (irelalign == NULL || irelalign->r_addend > irel->r_addend)
3094 irelalign = irel;
3095 }
3096 }
3097
3098 addr = toaddr;
3099 }
3100
3101 if (!irelalign)
3102 {
3103 #ifdef DEBUG_RELAX
3104 fprintf (stderr, "relax pad %d shorten %d -> %d\n",
3105 align_pad_size,
3106 sec->_cooked_size,
3107 sec->_cooked_size - align_pad_size);
3108 #endif
3109 sec->_cooked_size -= align_pad_size;
3110 }
3111
3112 finish:
3113 if (internal_relocs != NULL
3114 && elf_section_data (sec)->relocs != internal_relocs)
3115 free (internal_relocs);
3116
3117 if (contents != NULL
3118 && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents)
3119 free (contents);
3120
3121 if (isymbuf != NULL
3122 && symtab_hdr->contents != (bfd_byte *) isymbuf)
3123 free (isymbuf);
3124
3125 return result;
3126
3127 error_return:
3128 result = FALSE;
3129 goto finish;
3130 }
3131
3132 static struct bfd_elf_special_section const v850_elf_special_sections[]=
3133 {
3134 { ".sdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3135 + SHF_V850_GPREL) },
3136 { ".rosdata", 8, -2, SHT_PROGBITS, (SHF_ALLOC
3137 + SHF_V850_GPREL) },
3138 { ".sbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3139 + SHF_V850_GPREL) },
3140 { ".scommon", 8, -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE
3141 + SHF_V850_GPREL) },
3142 { ".tdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3143 + SHF_V850_EPREL) },
3144 { ".tbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3145 + SHF_V850_EPREL) },
3146 { ".tcommon", 8, -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE
3147 + SHF_V850_R0REL) },
3148 { ".zdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3149 + SHF_V850_R0REL) },
3150 { ".rozdata", 8, -2, SHT_PROGBITS, (SHF_ALLOC
3151 + SHF_V850_R0REL) },
3152 { ".zbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3153 + SHF_V850_R0REL) },
3154 { ".zcommon", 8, -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE
3155 + SHF_V850_R0REL) },
3156 { ".call_table_data", 16, 0, SHT_PROGBITS, (SHF_ALLOC
3157 + SHF_WRITE) },
3158 { ".call_table_text", 16, 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3159 + SHF_EXECINSTR) },
3160 { NULL, 0, 0, 0, 0 }
3161 };
3162 \f
3163 #define TARGET_LITTLE_SYM bfd_elf32_v850_vec
3164 #define TARGET_LITTLE_NAME "elf32-v850"
3165 #define ELF_ARCH bfd_arch_v850
3166 #define ELF_MACHINE_CODE EM_V850
3167 #define ELF_MACHINE_ALT1 EM_CYGNUS_V850
3168 #define ELF_MAXPAGESIZE 0x1000
3169
3170 #define elf_info_to_howto v850_elf_info_to_howto_rela
3171 #define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3172
3173 #define elf_backend_check_relocs v850_elf_check_relocs
3174 #define elf_backend_relocate_section v850_elf_relocate_section
3175 #define elf_backend_object_p v850_elf_object_p
3176 #define elf_backend_final_write_processing v850_elf_final_write_processing
3177 #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3178 #define elf_backend_symbol_processing v850_elf_symbol_processing
3179 #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3180 #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3181 #define elf_backend_section_from_shdr v850_elf_section_from_shdr
3182 #define elf_backend_fake_sections v850_elf_fake_sections
3183 #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
3184 #define elf_backend_gc_sweep_hook v850_elf_gc_sweep_hook
3185 #define elf_backend_special_sections v850_elf_special_sections
3186
3187 #define elf_backend_can_gc_sections 1
3188 #define elf_backend_rela_normal 1
3189
3190 #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3191 #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
3192 #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3193 #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3194 #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
3195 #define bfd_elf32_bfd_relax_section v850_elf_relax_section
3196
3197 #define elf_symbol_leading_char '_'
3198
3199 #include "elf32-target.h"
GDB Binutils - Deliverables
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