1 /* V850-specific support for 32-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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. */
30 #include "libiberty.h"
32 /* Sign-extend a 24-bit number. */
33 #define SEXT24(x) ((((x) & 0xffffff) ^ 0x800000) - 0x800000)
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
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 *, 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_gc_sweep_hook
82 PARAMS ((bfd *, struct bfd_link_info *, asection *,
83 const Elf_Internal_Rela *));
84 static asection * v850_elf_gc_mark_hook
85 PARAMS ((asection *, struct bfd_link_info *,
86 Elf_Internal_Rela *, struct elf_link_hash_entry *,
88 static bfd_reloc_status_type v850_elf_ignore_reloc
89 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
90 static bfd_boolean v850_elf_relax_delete_bytes
91 PARAMS ((bfd *, asection *, bfd_vma, bfd_vma, int));
92 static bfd_boolean v850_elf_relax_section
93 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
95 /* Note: It is REQUIRED that the 'type' value of each entry
96 in this array match the index of the entry in the array. */
97 static reloc_howto_type v850_elf_howto_table[] =
99 /* This reloc does nothing. */
100 HOWTO (R_V850_NONE, /* type */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
104 FALSE, /* pc_relative */
106 complain_overflow_bitfield, /* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_V850_NONE", /* name */
109 FALSE, /* partial_inplace */
112 FALSE), /* pcrel_offset */
114 /* A PC relative 9 bit branch. */
115 HOWTO (R_V850_9_PCREL, /* type */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
119 TRUE, /* pc_relative */
121 complain_overflow_bitfield, /* complain_on_overflow */
122 v850_elf_reloc, /* special_function */
123 "R_V850_9_PCREL", /* name */
124 FALSE, /* partial_inplace */
125 0x00ffffff, /* src_mask */
126 0x00ffffff, /* dst_mask */
127 TRUE), /* pcrel_offset */
129 /* A PC relative 22 bit branch. */
130 HOWTO (R_V850_22_PCREL, /* type */
132 2, /* size (0 = byte, 1 = short, 2 = long) */
134 TRUE, /* pc_relative */
136 complain_overflow_signed, /* complain_on_overflow */
137 v850_elf_reloc, /* special_function */
138 "R_V850_22_PCREL", /* name */
139 FALSE, /* partial_inplace */
140 0x07ffff80, /* src_mask */
141 0x07ffff80, /* dst_mask */
142 TRUE), /* pcrel_offset */
144 /* High 16 bits of symbol value. */
145 HOWTO (R_V850_HI16_S, /* type */
147 1, /* size (0 = byte, 1 = short, 2 = long) */
149 FALSE, /* pc_relative */
151 complain_overflow_dont, /* complain_on_overflow */
152 v850_elf_reloc, /* special_function */
153 "R_V850_HI16_S", /* name */
154 FALSE, /* partial_inplace */
155 0xffff, /* src_mask */
156 0xffff, /* dst_mask */
157 FALSE), /* pcrel_offset */
159 /* High 16 bits of symbol value. */
160 HOWTO (R_V850_HI16, /* type */
162 1, /* size (0 = byte, 1 = short, 2 = long) */
164 FALSE, /* pc_relative */
166 complain_overflow_dont, /* complain_on_overflow */
167 v850_elf_reloc, /* special_function */
168 "R_V850_HI16", /* name */
169 FALSE, /* partial_inplace */
170 0xffff, /* src_mask */
171 0xffff, /* dst_mask */
172 FALSE), /* pcrel_offset */
174 /* Low 16 bits of symbol value. */
175 HOWTO (R_V850_LO16, /* type */
177 1, /* size (0 = byte, 1 = short, 2 = long) */
179 FALSE, /* pc_relative */
181 complain_overflow_dont, /* complain_on_overflow */
182 v850_elf_reloc, /* special_function */
183 "R_V850_LO16", /* name */
184 FALSE, /* partial_inplace */
185 0xffff, /* src_mask */
186 0xffff, /* dst_mask */
187 FALSE), /* pcrel_offset */
189 /* Simple 32bit reloc. */
190 HOWTO (R_V850_ABS32, /* type */
192 2, /* size (0 = byte, 1 = short, 2 = long) */
194 FALSE, /* pc_relative */
196 complain_overflow_dont, /* complain_on_overflow */
197 v850_elf_reloc, /* special_function */
198 "R_V850_ABS32", /* name */
199 FALSE, /* partial_inplace */
200 0xffffffff, /* src_mask */
201 0xffffffff, /* dst_mask */
202 FALSE), /* pcrel_offset */
204 /* Simple 16bit reloc. */
205 HOWTO (R_V850_16, /* type */
207 1, /* size (0 = byte, 1 = short, 2 = long) */
209 FALSE, /* pc_relative */
211 complain_overflow_dont, /* complain_on_overflow */
212 bfd_elf_generic_reloc, /* special_function */
213 "R_V850_16", /* name */
214 FALSE, /* partial_inplace */
215 0xffff, /* src_mask */
216 0xffff, /* dst_mask */
217 FALSE), /* pcrel_offset */
219 /* Simple 8bit reloc. */
220 HOWTO (R_V850_8, /* type */
222 0, /* size (0 = byte, 1 = short, 2 = long) */
224 FALSE, /* pc_relative */
226 complain_overflow_dont, /* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_V850_8", /* name */
229 FALSE, /* partial_inplace */
232 FALSE), /* pcrel_offset */
234 /* 16 bit offset from the short data area pointer. */
235 HOWTO (R_V850_SDA_16_16_OFFSET, /* type */
237 1, /* size (0 = byte, 1 = short, 2 = long) */
239 FALSE, /* pc_relative */
241 complain_overflow_dont, /* complain_on_overflow */
242 v850_elf_reloc, /* special_function */
243 "R_V850_SDA_16_16_OFFSET", /* name */
244 FALSE, /* partial_inplace */
245 0xffff, /* src_mask */
246 0xffff, /* dst_mask */
247 FALSE), /* pcrel_offset */
249 /* 15 bit offset from the short data area pointer. */
250 HOWTO (R_V850_SDA_15_16_OFFSET, /* type */
252 1, /* size (0 = byte, 1 = short, 2 = long) */
254 FALSE, /* pc_relative */
256 complain_overflow_dont, /* complain_on_overflow */
257 v850_elf_reloc, /* special_function */
258 "R_V850_SDA_15_16_OFFSET", /* name */
259 FALSE, /* partial_inplace */
260 0xfffe, /* src_mask */
261 0xfffe, /* dst_mask */
262 FALSE), /* pcrel_offset */
264 /* 16 bit offset from the zero data area pointer. */
265 HOWTO (R_V850_ZDA_16_16_OFFSET, /* type */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
269 FALSE, /* pc_relative */
271 complain_overflow_dont, /* complain_on_overflow */
272 v850_elf_reloc, /* special_function */
273 "R_V850_ZDA_16_16_OFFSET", /* name */
274 FALSE, /* partial_inplace */
275 0xffff, /* src_mask */
276 0xffff, /* dst_mask */
277 FALSE), /* pcrel_offset */
279 /* 15 bit offset from the zero data area pointer. */
280 HOWTO (R_V850_ZDA_15_16_OFFSET, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE, /* pc_relative */
286 complain_overflow_dont, /* complain_on_overflow */
287 v850_elf_reloc, /* special_function */
288 "R_V850_ZDA_15_16_OFFSET", /* name */
289 FALSE, /* partial_inplace */
290 0xfffe, /* src_mask */
291 0xfffe, /* dst_mask */
292 FALSE), /* pcrel_offset */
294 /* 6 bit offset from the tiny data area pointer. */
295 HOWTO (R_V850_TDA_6_8_OFFSET, /* type */
297 1, /* size (0 = byte, 1 = short, 2 = long) */
299 FALSE, /* pc_relative */
301 complain_overflow_dont, /* complain_on_overflow */
302 v850_elf_reloc, /* special_function */
303 "R_V850_TDA_6_8_OFFSET", /* name */
304 FALSE, /* partial_inplace */
307 FALSE), /* pcrel_offset */
309 /* 8 bit offset from the tiny data area pointer. */
310 HOWTO (R_V850_TDA_7_8_OFFSET, /* type */
312 1, /* size (0 = byte, 1 = short, 2 = long) */
314 FALSE, /* pc_relative */
316 complain_overflow_dont, /* complain_on_overflow */
317 v850_elf_reloc, /* special_function */
318 "R_V850_TDA_7_8_OFFSET", /* name */
319 FALSE, /* partial_inplace */
322 FALSE), /* pcrel_offset */
324 /* 7 bit offset from the tiny data area pointer. */
325 HOWTO (R_V850_TDA_7_7_OFFSET, /* type */
327 1, /* size (0 = byte, 1 = short, 2 = long) */
329 FALSE, /* pc_relative */
331 complain_overflow_dont, /* complain_on_overflow */
332 v850_elf_reloc, /* special_function */
333 "R_V850_TDA_7_7_OFFSET", /* name */
334 FALSE, /* partial_inplace */
337 FALSE), /* pcrel_offset */
339 /* 16 bit offset from the tiny data area pointer! */
340 HOWTO (R_V850_TDA_16_16_OFFSET, /* type */
342 1, /* size (0 = byte, 1 = short, 2 = long) */
344 FALSE, /* pc_relative */
346 complain_overflow_dont, /* complain_on_overflow */
347 v850_elf_reloc, /* special_function */
348 "R_V850_TDA_16_16_OFFSET", /* name */
349 FALSE, /* partial_inplace */
350 0xffff, /* src_mask */
351 0xfff, /* dst_mask */
352 FALSE), /* pcrel_offset */
354 /* 5 bit offset from the tiny data area pointer. */
355 HOWTO (R_V850_TDA_4_5_OFFSET, /* type */
357 1, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE, /* pc_relative */
361 complain_overflow_dont, /* complain_on_overflow */
362 v850_elf_reloc, /* special_function */
363 "R_V850_TDA_4_5_OFFSET", /* name */
364 FALSE, /* partial_inplace */
367 FALSE), /* pcrel_offset */
369 /* 4 bit offset from the tiny data area pointer. */
370 HOWTO (R_V850_TDA_4_4_OFFSET, /* type */
372 1, /* size (0 = byte, 1 = short, 2 = long) */
374 FALSE, /* pc_relative */
376 complain_overflow_dont, /* complain_on_overflow */
377 v850_elf_reloc, /* special_function */
378 "R_V850_TDA_4_4_OFFSET", /* name */
379 FALSE, /* partial_inplace */
382 FALSE), /* pcrel_offset */
384 /* 16 bit offset from the short data area pointer. */
385 HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* type */
387 2, /* size (0 = byte, 1 = short, 2 = long) */
389 FALSE, /* pc_relative */
391 complain_overflow_dont, /* complain_on_overflow */
392 v850_elf_reloc, /* special_function */
393 "R_V850_SDA_16_16_SPLIT_OFFSET",/* name */
394 FALSE, /* partial_inplace */
395 0xfffe0020, /* src_mask */
396 0xfffe0020, /* dst_mask */
397 FALSE), /* pcrel_offset */
399 /* 16 bit offset from the zero data area pointer. */
400 HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* type */
402 2, /* size (0 = byte, 1 = short, 2 = long) */
404 FALSE, /* pc_relative */
406 complain_overflow_dont, /* complain_on_overflow */
407 v850_elf_reloc, /* special_function */
408 "R_V850_ZDA_16_16_SPLIT_OFFSET",/* name */
409 FALSE, /* partial_inplace */
410 0xfffe0020, /* src_mask */
411 0xfffe0020, /* dst_mask */
412 FALSE), /* pcrel_offset */
414 /* 6 bit offset from the call table base pointer. */
415 HOWTO (R_V850_CALLT_6_7_OFFSET, /* type */
417 1, /* size (0 = byte, 1 = short, 2 = long) */
419 FALSE, /* pc_relative */
421 complain_overflow_dont, /* complain_on_overflow */
422 v850_elf_reloc, /* special_function */
423 "R_V850_CALLT_6_7_OFFSET", /* name */
424 FALSE, /* partial_inplace */
427 FALSE), /* pcrel_offset */
429 /* 16 bit offset from the call table base pointer. */
430 HOWTO (R_V850_CALLT_16_16_OFFSET, /* type */
432 1, /* size (0 = byte, 1 = short, 2 = long) */
434 FALSE, /* pc_relative */
436 complain_overflow_dont, /* complain_on_overflow */
437 v850_elf_reloc, /* special_function */
438 "R_V850_CALLT_16_16_OFFSET", /* name */
439 FALSE, /* partial_inplace */
440 0xffff, /* src_mask */
441 0xffff, /* dst_mask */
442 FALSE), /* pcrel_offset */
444 /* GNU extension to record C++ vtable hierarchy */
445 HOWTO (R_V850_GNU_VTINHERIT, /* type */
447 2, /* size (0 = byte, 1 = short, 2 = long) */
449 FALSE, /* pc_relative */
451 complain_overflow_dont, /* complain_on_overflow */
452 NULL, /* special_function */
453 "R_V850_GNU_VTINHERIT", /* name */
454 FALSE, /* partial_inplace */
457 FALSE), /* pcrel_offset */
459 /* GNU extension to record C++ vtable member usage */
460 HOWTO (R_V850_GNU_VTENTRY, /* type */
462 2, /* size (0 = byte, 1 = short, 2 = long) */
464 FALSE, /* pc_relative */
466 complain_overflow_dont, /* complain_on_overflow */
467 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
468 "R_V850_GNU_VTENTRY", /* name */
469 FALSE, /* partial_inplace */
472 FALSE), /* pcrel_offset */
474 /* Indicates a .longcall pseudo-op. The compiler will generate a .longcall
475 pseudo-op when it finds a function call which can be relaxed. */
476 HOWTO (R_V850_LONGCALL, /* type */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
480 TRUE, /* pc_relative */
482 complain_overflow_signed, /* complain_on_overflow */
483 v850_elf_ignore_reloc, /* special_function */
484 "R_V850_LONGCALL", /* name */
485 FALSE, /* partial_inplace */
488 TRUE), /* pcrel_offset */
490 /* Indicates a .longjump pseudo-op. The compiler will generate a
491 .longjump pseudo-op when it finds a branch which can be relaxed. */
492 HOWTO (R_V850_LONGJUMP, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 TRUE, /* pc_relative */
498 complain_overflow_signed, /* complain_on_overflow */
499 v850_elf_ignore_reloc, /* special_function */
500 "R_V850_LONGJUMP", /* name */
501 FALSE, /* partial_inplace */
504 TRUE), /* pcrel_offset */
506 HOWTO (R_V850_ALIGN, /* type */
508 1, /* size (0 = byte, 1 = short, 2 = long) */
510 FALSE, /* pc_relative */
512 complain_overflow_unsigned, /* complain_on_overflow */
513 v850_elf_ignore_reloc, /* special_function */
514 "R_V850_ALIGN", /* name */
515 FALSE, /* partial_inplace */
518 TRUE), /* pcrel_offset */
520 /* Simple pc-relative 32bit reloc. */
521 HOWTO (R_V850_REL32, /* type */
523 2, /* size (0 = byte, 1 = short, 2 = long) */
525 TRUE, /* pc_relative */
527 complain_overflow_dont, /* complain_on_overflow */
528 v850_elf_reloc, /* special_function */
529 "R_V850_REL32", /* name */
530 FALSE, /* partial_inplace */
531 0xffffffff, /* src_mask */
532 0xffffffff, /* dst_mask */
533 FALSE), /* pcrel_offset */
535 /* An ld.bu version of R_V850_LO16. */
536 HOWTO (R_V850_LO16_SPLIT_OFFSET, /* type */
538 2, /* size (0 = byte, 1 = short, 2 = long) */
540 FALSE, /* pc_relative */
542 complain_overflow_dont, /* complain_on_overflow */
543 v850_elf_reloc, /* special_function */
544 "R_V850_LO16_SPLIT_OFFSET", /* name */
545 FALSE, /* partial_inplace */
546 0xfffe0020, /* src_mask */
547 0xfffe0020, /* dst_mask */
548 FALSE), /* pcrel_offset */
551 /* Map BFD reloc types to V850 ELF reloc types. */
553 struct v850_elf_reloc_map
555 /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an
557 bfd_reloc_code_real_type bfd_reloc_val;
558 unsigned int elf_reloc_val;
561 static const struct v850_elf_reloc_map v850_elf_reloc_map[] =
563 { BFD_RELOC_NONE, R_V850_NONE },
564 { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL },
565 { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL },
566 { BFD_RELOC_HI16_S, R_V850_HI16_S },
567 { BFD_RELOC_HI16, R_V850_HI16 },
568 { BFD_RELOC_LO16, R_V850_LO16 },
569 { BFD_RELOC_32, R_V850_ABS32 },
570 { BFD_RELOC_32_PCREL, R_V850_REL32 },
571 { BFD_RELOC_16, R_V850_16 },
572 { BFD_RELOC_8, R_V850_8 },
573 { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET },
574 { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET },
575 { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET },
576 { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET },
577 { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET },
578 { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET },
579 { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET },
580 { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET },
581 { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET },
582 { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET },
583 { BFD_RELOC_V850_LO16_SPLIT_OFFSET, R_V850_LO16_SPLIT_OFFSET },
584 { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET },
585 { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET },
586 { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET },
587 { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET },
588 { BFD_RELOC_VTABLE_INHERIT, R_V850_GNU_VTINHERIT },
589 { BFD_RELOC_VTABLE_ENTRY, R_V850_GNU_VTENTRY },
590 { BFD_RELOC_V850_LONGCALL, R_V850_LONGCALL },
591 { BFD_RELOC_V850_LONGJUMP, R_V850_LONGJUMP },
592 { BFD_RELOC_V850_ALIGN, R_V850_ALIGN },
596 /* Map a bfd relocation into the appropriate howto structure. */
598 static reloc_howto_type *
599 v850_elf_reloc_type_lookup (abfd, code)
600 bfd *abfd ATTRIBUTE_UNUSED;
601 bfd_reloc_code_real_type code;
605 for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;)
606 if (v850_elf_reloc_map[i].bfd_reloc_val == code)
608 unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val;
610 BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val);
612 return v850_elf_howto_table + elf_reloc_val;
618 /* Set the howto pointer for an V850 ELF reloc. */
621 v850_elf_info_to_howto_rel (abfd, cache_ptr, dst)
622 bfd *abfd ATTRIBUTE_UNUSED;
624 Elf_Internal_Rela *dst;
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];
633 /* Set the howto pointer for a V850 ELF reloc (type RELA). */
635 v850_elf_info_to_howto_rela (abfd, cache_ptr, dst)
636 bfd *abfd ATTRIBUTE_UNUSED;
638 Elf_Internal_Rela *dst;
642 r_type = ELF32_R_TYPE (dst->r_info);
643 BFD_ASSERT (r_type < (unsigned int) R_V850_max);
644 cache_ptr->howto = &v850_elf_howto_table[r_type];
647 /* Look through the relocs for a section during the first phase, and
648 allocate space in the global offset table or procedure linkage
652 v850_elf_check_relocs (abfd, info, sec, relocs)
654 struct bfd_link_info *info;
656 const Elf_Internal_Rela *relocs;
658 bfd_boolean ret = TRUE;
660 Elf_Internal_Shdr *symtab_hdr;
661 struct elf_link_hash_entry **sym_hashes;
662 const Elf_Internal_Rela *rel;
663 const Elf_Internal_Rela *rel_end;
665 enum v850_reloc_type r_type;
667 const char *common = (const char *)0;
669 if (info->relocatable)
673 _bfd_error_handler ("v850_elf_check_relocs called for section %A in %B",
677 dynobj = elf_hash_table (info)->dynobj;
678 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
679 sym_hashes = elf_sym_hashes (abfd);
682 rel_end = relocs + sec->reloc_count;
683 for (rel = relocs; rel < rel_end; rel++)
685 unsigned long r_symndx;
686 struct elf_link_hash_entry *h;
688 r_symndx = ELF32_R_SYM (rel->r_info);
689 if (r_symndx < symtab_hdr->sh_info)
692 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
694 r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info);
700 case R_V850_22_PCREL:
704 case R_V850_LO16_SPLIT_OFFSET:
709 case R_V850_CALLT_6_7_OFFSET:
710 case R_V850_CALLT_16_16_OFFSET:
713 /* This relocation describes the C++ object vtable hierarchy.
714 Reconstruct it for later use during GC. */
715 case R_V850_GNU_VTINHERIT:
716 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
720 /* This relocation describes which C++ vtable entries
721 are actually used. Record for later use during GC. */
722 case R_V850_GNU_VTENTRY:
723 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
727 case R_V850_SDA_16_16_SPLIT_OFFSET:
728 case R_V850_SDA_16_16_OFFSET:
729 case R_V850_SDA_15_16_OFFSET:
730 other = V850_OTHER_SDA;
732 goto small_data_common;
734 case R_V850_ZDA_16_16_SPLIT_OFFSET:
735 case R_V850_ZDA_16_16_OFFSET:
736 case R_V850_ZDA_15_16_OFFSET:
737 other = V850_OTHER_ZDA;
739 goto small_data_common;
741 case R_V850_TDA_4_5_OFFSET:
742 case R_V850_TDA_4_4_OFFSET:
743 case R_V850_TDA_6_8_OFFSET:
744 case R_V850_TDA_7_8_OFFSET:
745 case R_V850_TDA_7_7_OFFSET:
746 case R_V850_TDA_16_16_OFFSET:
747 other = V850_OTHER_TDA;
751 #define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA)
756 /* Flag which type of relocation was used. */
758 if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK)
759 && (h->other & V850_OTHER_ERROR) == 0)
762 static char buff[200]; /* XXX */
764 switch (h->other & V850_OTHER_MASK)
767 msg = _("Variable `%s' cannot occupy in multiple small data regions");
769 case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA:
770 msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions");
772 case V850_OTHER_SDA | V850_OTHER_ZDA:
773 msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously");
775 case V850_OTHER_SDA | V850_OTHER_TDA:
776 msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously");
778 case V850_OTHER_ZDA | V850_OTHER_TDA:
779 msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously");
783 sprintf (buff, msg, h->root.root.string);
784 info->callbacks->warning (info, buff, h->root.root.string,
785 abfd, h->root.u.def.section,
788 bfd_set_error (bfd_error_bad_value);
789 h->other |= V850_OTHER_ERROR;
794 if (h && h->root.type == bfd_link_hash_common
796 && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON"))
800 section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common);
801 section->flags |= SEC_IS_COMMON;
805 fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n",
806 v850_elf_howto_table[ (int)r_type ].name,
807 (h && h->root.root.string) ? h->root.root.string : "<unknown>",
808 (h->root.type == bfd_link_hash_common) ? ", symbol is common" : "");
817 /* In the old version, when an entry was checked out from the table,
818 it was deleted. This produced an error if the entry was needed
819 more than once, as the second attempted retry failed.
821 In the current version, the entry is not deleted, instead we set
822 the field 'found' to TRUE. If a second lookup matches the same
823 entry, then we know that the hi16s reloc has already been updated
824 and does not need to be updated a second time.
826 TODO - TOFIX: If it is possible that we need to restore 2 different
827 addresses from the same table entry, where the first generates an
828 overflow, whilst the second do not, then this code will fail. */
830 typedef struct hi16s_location
834 unsigned long counter;
836 struct hi16s_location *next;
840 static hi16s_location *previous_hi16s;
841 static hi16s_location *free_hi16s;
842 static unsigned long hi16s_counter;
845 remember_hi16s_reloc (abfd, addend, address)
850 hi16s_location * entry = NULL;
851 bfd_size_type amt = sizeof (* free_hi16s);
853 /* Find a free structure. */
854 if (free_hi16s == NULL)
855 free_hi16s = (hi16s_location *) bfd_zalloc (abfd, amt);
858 free_hi16s = free_hi16s->next;
860 entry->addend = addend;
861 entry->address = address;
862 entry->counter = hi16s_counter ++;
863 entry->found = FALSE;
864 entry->next = previous_hi16s;
865 previous_hi16s = entry;
867 /* Cope with wrap around of our counter. */
868 if (hi16s_counter == 0)
870 /* XXX - Assume that all counter entries differ only in their low 16 bits. */
871 for (entry = previous_hi16s; entry != NULL; entry = entry->next)
872 entry->counter &= 0xffff;
874 hi16s_counter = 0x10000;
881 find_remembered_hi16s_reloc (addend, already_found)
883 bfd_boolean *already_found;
885 hi16s_location *match = NULL;
886 hi16s_location *entry;
887 hi16s_location *previous = NULL;
888 hi16s_location *prev;
891 /* Search the table. Record the most recent entry that matches. */
892 for (entry = previous_hi16s; entry; entry = entry->next)
894 if (entry->addend == addend
895 && (match == NULL || match->counter < entry->counter))
907 /* Extract the address. */
908 addr = match->address;
910 /* Remember if this entry has already been used before. */
912 * already_found = match->found;
914 /* Note that this entry has now been used. */
920 /* Calculate the final operand value for a R_V850_LO16 or
921 R_V850_LO16_SPLIT_OFFSET. *INSN is the current operand value and
922 ADDEND is the sum of the relocation symbol and offset. Store the
923 operand value in *INSN and return true on success.
925 The assembler has already done some of this: If the value stored in
926 the instruction has its 15th bit set, (counting from zero) then the
927 assembler will have added 1 to the value stored in the associated
928 HI16S reloc. So for example, these relocations:
930 movhi hi( fred ), r0, r1
931 movea lo( fred ), r1, r1
933 will store 0 in the value fields for the MOVHI and MOVEA instructions
934 and addend will be the address of fred, but for these instructions:
936 movhi hi( fred + 0x123456), r0, r1
937 movea lo( fred + 0x123456), r1, r1
939 the value stored in the MOVHI instruction will be 0x12 and the value
940 stored in the MOVEA instruction will be 0x3456. If however the
943 movhi hi( fred + 0x10ffff), r0, r1
944 movea lo( fred + 0x10ffff), r1, r1
946 then the value stored in the MOVHI instruction would be 0x11 (not
947 0x10) and the value stored in the MOVEA instruction would be 0xffff.
948 Thus (assuming for the moment that the addend is 0), at run time the
949 MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction
950 adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if
951 the instructions were:
953 movhi hi( fred - 1), r0, r1
954 movea lo( fred - 1), r1, r1
956 then 0 is stored in the MOVHI instruction and -1 is stored in the
959 Overflow can occur if the addition of the value stored in the
960 instruction plus the addend sets the 15th bit when before it was clear.
961 This is because the 15th bit will be sign extended into the high part,
962 thus reducing its value by one, but since the 15th bit was originally
963 clear, the assembler will not have added 1 to the previous HI16S reloc
964 to compensate for this effect. For example:
966 movhi hi( fred + 0x123456), r0, r1
967 movea lo( fred + 0x123456), r1, r1
969 The value stored in HI16S reloc is 0x12, the value stored in the LO16
970 reloc is 0x3456. If we assume that the address of fred is 0x00007000
971 then the relocations become:
973 HI16S: 0x0012 + (0x00007000 >> 16) = 0x12
974 LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456
976 but when the instructions are executed, the MOVEA instruction's value
977 is signed extended, so the sum becomes:
982 0x0011a456 but 'fred + 0x123456' = 0x0012a456
984 Note that if the 15th bit was set in the value stored in the LO16
985 reloc, then we do not have to do anything:
987 movhi hi( fred + 0x10ffff), r0, r1
988 movea lo( fred + 0x10ffff), r1, r1
990 HI16S: 0x0011 + (0x00007000 >> 16) = 0x11
991 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff
996 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff
998 Overflow can also occur if the computation carries into the 16th bit
999 and it also results in the 15th bit having the same value as the 15th
1000 bit of the original value. What happens is that the HI16S reloc
1001 will have already examined the 15th bit of the original value and
1002 added 1 to the high part if the bit is set. This compensates for the
1003 sign extension of 15th bit of the result of the computation. But now
1004 there is a carry into the 16th bit, and this has not been allowed for.
1006 So, for example if fred is at address 0xf000:
1008 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
1009 movea lo( fred + 0xffff), r1, r1
1011 HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001
1012 LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost)
1017 0x0000efff but 'fred + 0xffff' = 0x0001efff
1019 Similarly, if the 15th bit remains clear, but overflow occurs into
1020 the 16th bit then (assuming the address of fred is 0xf000):
1022 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
1023 movea lo( fred + 0x7000), r1, r1
1025 HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000
1026 LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
1031 0x00006fff but 'fred + 0x7000' = 0x00016fff
1033 Note - there is no need to change anything if a carry occurs, and the
1034 15th bit changes its value from being set to being clear, as the HI16S
1035 reloc will have already added in 1 to the high part for us:
1037 movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set]
1038 movea lo( fred + 0xffff), r1, r1
1040 HI16S: 0x0001 + (0x00007000 >> 16)
1041 LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost)
1044 + 0x00006fff (bit 15 not set, so the top half is zero)
1046 0x00016fff which is right (assuming that fred is at 0x7000)
1048 but if the 15th bit goes from being clear to being set, then we must
1049 once again handle overflow:
1051 movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear]
1052 movea lo( fred + 0x7000), r1, r1
1054 HI16S: 0x0000 + (0x0000ffff >> 16)
1055 LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16)
1058 + 0x00006fff (bit 15 not set, so the top half is zero)
1060 0x00006fff which is wrong (assuming that fred is at 0xffff). */
1063 v850_elf_perform_lo16_relocation (bfd *abfd, unsigned long *insn,
1064 unsigned long addend)
1066 #define BIT15_SET(x) ((x) & 0x8000)
1067 #define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff)
1068 if ((BIT15_SET (*insn + addend) && ! BIT15_SET (addend))
1069 || (OVERFLOWS (addend, *insn)
1070 && ((! BIT15_SET (*insn)) || (BIT15_SET (addend)))))
1072 bfd_boolean already_updated;
1073 bfd_byte *hi16s_address = find_remembered_hi16s_reloc
1074 (addend, & already_updated);
1076 /* Amend the matching HI16_S relocation. */
1077 if (hi16s_address != NULL)
1079 if (! already_updated)
1081 unsigned long hi_insn = bfd_get_16 (abfd, hi16s_address);
1083 bfd_put_16 (abfd, hi_insn, hi16s_address);
1088 fprintf (stderr, _("FAILED to find previous HI16 reloc\n"));
1095 /* Do not complain if value has top bit set, as this has been
1097 *insn = (*insn + addend) & 0xffff;
1101 /* FIXME: The code here probably ought to be removed and the code in reloc.c
1102 allowed to do its stuff instead. At least for most of the relocs, anyway. */
1104 static bfd_reloc_status_type
1105 v850_elf_perform_relocation (abfd, r_type, addend, address)
1107 unsigned int r_type;
1112 unsigned long result;
1113 bfd_signed_vma saddend = (bfd_signed_vma) addend;
1118 /* fprintf (stderr, "reloc type %d not SUPPORTED\n", r_type ); */
1119 return bfd_reloc_notsupported;
1123 bfd_put_32 (abfd, addend, address);
1124 return bfd_reloc_ok;
1126 case R_V850_22_PCREL:
1127 if (saddend > 0x1fffff || saddend < -0x200000)
1128 return bfd_reloc_overflow;
1130 if ((addend % 2) != 0)
1131 return bfd_reloc_dangerous;
1133 insn = bfd_get_32 (abfd, address);
1134 insn &= ~0xfffe003f;
1135 insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16));
1136 bfd_put_32 (abfd, (bfd_vma) insn, address);
1137 return bfd_reloc_ok;
1139 case R_V850_9_PCREL:
1140 if (saddend > 0xff || saddend < -0x100)
1141 return bfd_reloc_overflow;
1143 if ((addend % 2) != 0)
1144 return bfd_reloc_dangerous;
1146 insn = bfd_get_16 (abfd, address);
1148 insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3);
1152 addend += (bfd_get_16 (abfd, address) << 16);
1153 addend = (addend >> 16);
1158 /* Remember where this relocation took place. */
1159 remember_hi16s_reloc (abfd, addend, address);
1161 addend += (bfd_get_16 (abfd, address) << 16);
1162 addend = (addend >> 16) + ((addend & 0x8000) != 0);
1164 /* This relocation cannot overflow. */
1165 if (addend > 0x7fff)
1172 insn = bfd_get_16 (abfd, address);
1173 if (! v850_elf_perform_lo16_relocation (abfd, &insn, addend))
1174 return bfd_reloc_overflow;
1178 addend += (char) bfd_get_8 (abfd, address);
1180 saddend = (bfd_signed_vma) addend;
1182 if (saddend > 0x7f || saddend < -0x80)
1183 return bfd_reloc_overflow;
1185 bfd_put_8 (abfd, addend, address);
1186 return bfd_reloc_ok;
1188 case R_V850_CALLT_16_16_OFFSET:
1189 addend += bfd_get_16 (abfd, address);
1191 saddend = (bfd_signed_vma) addend;
1193 if (saddend > 0xffff || saddend < 0)
1194 return bfd_reloc_overflow;
1202 case R_V850_SDA_16_16_OFFSET:
1203 case R_V850_ZDA_16_16_OFFSET:
1204 case R_V850_TDA_16_16_OFFSET:
1205 addend += bfd_get_16 (abfd, address);
1207 saddend = (bfd_signed_vma) addend;
1209 if (saddend > 0x7fff || saddend < -0x8000)
1210 return bfd_reloc_overflow;
1215 case R_V850_SDA_15_16_OFFSET:
1216 case R_V850_ZDA_15_16_OFFSET:
1217 insn = bfd_get_16 (abfd, address);
1218 addend += (insn & 0xfffe);
1220 saddend = (bfd_signed_vma) addend;
1222 if (saddend > 0x7ffe || saddend < -0x8000)
1223 return bfd_reloc_overflow;
1226 return bfd_reloc_dangerous;
1228 insn = (addend &~ (bfd_vma) 1) | (insn & 1);
1231 case R_V850_TDA_6_8_OFFSET:
1232 insn = bfd_get_16 (abfd, address);
1233 addend += ((insn & 0x7e) << 1);
1235 saddend = (bfd_signed_vma) addend;
1237 if (saddend > 0xfc || saddend < 0)
1238 return bfd_reloc_overflow;
1241 return bfd_reloc_dangerous;
1244 insn |= (addend >> 1);
1247 case R_V850_TDA_7_8_OFFSET:
1248 insn = bfd_get_16 (abfd, address);
1249 addend += ((insn & 0x7f) << 1);
1251 saddend = (bfd_signed_vma) addend;
1253 if (saddend > 0xfe || saddend < 0)
1254 return bfd_reloc_overflow;
1257 return bfd_reloc_dangerous;
1260 insn |= (addend >> 1);
1263 case R_V850_TDA_7_7_OFFSET:
1264 insn = bfd_get_16 (abfd, address);
1265 addend += insn & 0x7f;
1267 saddend = (bfd_signed_vma) addend;
1269 if (saddend > 0x7f || saddend < 0)
1270 return bfd_reloc_overflow;
1276 case R_V850_TDA_4_5_OFFSET:
1277 insn = bfd_get_16 (abfd, address);
1278 addend += ((insn & 0xf) << 1);
1280 saddend = (bfd_signed_vma) addend;
1282 if (saddend > 0x1e || saddend < 0)
1283 return bfd_reloc_overflow;
1286 return bfd_reloc_dangerous;
1289 insn |= (addend >> 1);
1292 case R_V850_TDA_4_4_OFFSET:
1293 insn = bfd_get_16 (abfd, address);
1294 addend += insn & 0xf;
1296 saddend = (bfd_signed_vma) addend;
1298 if (saddend > 0xf || saddend < 0)
1299 return bfd_reloc_overflow;
1305 case R_V850_LO16_SPLIT_OFFSET:
1306 insn = bfd_get_32 (abfd, address);
1307 result = ((insn & 0xfffe0000) >> 16) | ((insn & 0x20) >> 5);
1308 if (! v850_elf_perform_lo16_relocation (abfd, &result, addend))
1309 return bfd_reloc_overflow;
1310 insn = (((result << 16) & 0xfffe0000)
1311 | ((result << 5) & 0x20)
1312 | (insn & ~0xfffe0020));
1313 bfd_put_32 (abfd, insn, address);
1314 return bfd_reloc_ok;
1316 case R_V850_ZDA_16_16_SPLIT_OFFSET:
1317 case R_V850_SDA_16_16_SPLIT_OFFSET:
1318 insn = bfd_get_32 (abfd, address);
1319 addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5);
1321 saddend = (bfd_signed_vma) addend;
1323 if (saddend > 0x7fff || saddend < -0x8000)
1324 return bfd_reloc_overflow;
1327 insn |= (addend & 1) << 5;
1328 insn |= (addend &~ (bfd_vma) 1) << 16;
1330 bfd_put_32 (abfd, (bfd_vma) insn, address);
1331 return bfd_reloc_ok;
1333 case R_V850_CALLT_6_7_OFFSET:
1334 insn = bfd_get_16 (abfd, address);
1335 addend += ((insn & 0x3f) << 1);
1337 saddend = (bfd_signed_vma) addend;
1339 if (saddend > 0x7e || saddend < 0)
1340 return bfd_reloc_overflow;
1343 return bfd_reloc_dangerous;
1346 insn |= (addend >> 1);
1349 case R_V850_GNU_VTINHERIT:
1350 case R_V850_GNU_VTENTRY:
1351 return bfd_reloc_ok;
1355 bfd_put_16 (abfd, (bfd_vma) insn, address);
1356 return bfd_reloc_ok;
1359 /* Insert the addend into the instruction. */
1361 static bfd_reloc_status_type
1362 v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err)
1363 bfd *abfd ATTRIBUTE_UNUSED;
1366 PTR data ATTRIBUTE_UNUSED;
1369 char **err ATTRIBUTE_UNUSED;
1373 /* If there is an output BFD,
1374 and the symbol is not a section name (which is only defined at final link time),
1375 and either we are not putting the addend into the instruction
1376 or the addend is zero, so there is nothing to add into the instruction
1377 then just fixup the address and return. */
1378 if (obfd != (bfd *) NULL
1379 && (symbol->flags & BSF_SECTION_SYM) == 0
1380 && (! reloc->howto->partial_inplace
1381 || reloc->addend == 0))
1383 reloc->address += isection->output_offset;
1384 return bfd_reloc_ok;
1387 /* Catch relocs involving undefined symbols. */
1388 if (bfd_is_und_section (symbol->section)
1389 && (symbol->flags & BSF_WEAK) == 0
1391 return bfd_reloc_undefined;
1393 /* We handle final linking of some relocs ourselves. */
1395 /* Is the address of the relocation really within the section? */
1396 if (reloc->address > bfd_get_section_limit (abfd, isection))
1397 return bfd_reloc_outofrange;
1399 /* Work out which section the relocation is targeted at and the
1400 initial relocation command value. */
1402 if (reloc->howto->pc_relative)
1403 return bfd_reloc_ok;
1405 /* Get symbol value. (Common symbols are special.) */
1406 if (bfd_is_com_section (symbol->section))
1409 relocation = symbol->value;
1411 /* Convert input-section-relative symbol value to absolute + addend. */
1412 relocation += symbol->section->output_section->vma;
1413 relocation += symbol->section->output_offset;
1414 relocation += reloc->addend;
1416 reloc->addend = relocation;
1417 return bfd_reloc_ok;
1420 /* This function is used for relocs which are only used
1421 for relaxing, which the linker should otherwise ignore. */
1423 static bfd_reloc_status_type
1424 v850_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section,
1425 output_bfd, error_message)
1426 bfd *abfd ATTRIBUTE_UNUSED;
1427 arelent *reloc_entry;
1428 asymbol *symbol ATTRIBUTE_UNUSED;
1429 PTR data ATTRIBUTE_UNUSED;
1430 asection *input_section;
1432 char **error_message ATTRIBUTE_UNUSED;
1434 if (output_bfd != NULL)
1435 reloc_entry->address += input_section->output_offset;
1437 return bfd_reloc_ok;
1441 v850_elf_is_local_label_name (abfd, name)
1442 bfd *abfd ATTRIBUTE_UNUSED;
1445 return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
1446 || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_'));
1449 /* We overload some of the bfd_reloc error codes for own purposes. */
1450 #define bfd_reloc_gp_not_found bfd_reloc_other
1451 #define bfd_reloc_ep_not_found bfd_reloc_continue
1452 #define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1)
1454 /* Perform a relocation as part of a final link. */
1456 static bfd_reloc_status_type
1457 v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
1458 input_section, contents, offset, value,
1459 addend, info, sym_sec, is_local)
1460 reloc_howto_type *howto;
1462 bfd *output_bfd ATTRIBUTE_UNUSED;
1463 asection *input_section;
1468 struct bfd_link_info *info;
1470 int is_local ATTRIBUTE_UNUSED;
1472 unsigned int r_type = howto->type;
1473 bfd_byte *hit_data = contents + offset;
1475 /* Adjust the value according to the relocation. */
1478 case R_V850_9_PCREL:
1479 value -= (input_section->output_section->vma
1480 + input_section->output_offset);
1484 case R_V850_22_PCREL:
1485 value -= (input_section->output_section->vma
1486 + input_section->output_offset
1489 /* If the sign extension will corrupt the value then we have overflowed. */
1490 if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000))
1491 return bfd_reloc_overflow;
1493 /* Only the bottom 24 bits of the PC are valid */
1494 value = SEXT24 (value);
1498 value -= (input_section->output_section->vma
1499 + input_section->output_offset
1506 case R_V850_LO16_SPLIT_OFFSET:
1512 case R_V850_ZDA_15_16_OFFSET:
1513 case R_V850_ZDA_16_16_OFFSET:
1514 case R_V850_ZDA_16_16_SPLIT_OFFSET:
1515 if (sym_sec == NULL)
1516 return bfd_reloc_undefined;
1518 value -= sym_sec->output_section->vma;
1521 case R_V850_SDA_15_16_OFFSET:
1522 case R_V850_SDA_16_16_OFFSET:
1523 case R_V850_SDA_16_16_SPLIT_OFFSET:
1526 struct bfd_link_hash_entry * h;
1528 if (sym_sec == NULL)
1529 return bfd_reloc_undefined;
1531 /* Get the value of __gp. */
1532 h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE);
1533 if (h == (struct bfd_link_hash_entry *) NULL
1534 || h->type != bfd_link_hash_defined)
1535 return bfd_reloc_gp_not_found;
1537 gp = (h->u.def.value
1538 + h->u.def.section->output_section->vma
1539 + h->u.def.section->output_offset);
1541 value -= sym_sec->output_section->vma;
1542 value -= (gp - sym_sec->output_section->vma);
1546 case R_V850_TDA_4_4_OFFSET:
1547 case R_V850_TDA_4_5_OFFSET:
1548 case R_V850_TDA_16_16_OFFSET:
1549 case R_V850_TDA_7_7_OFFSET:
1550 case R_V850_TDA_7_8_OFFSET:
1551 case R_V850_TDA_6_8_OFFSET:
1554 struct bfd_link_hash_entry * h;
1556 /* Get the value of __ep. */
1557 h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE);
1558 if (h == (struct bfd_link_hash_entry *) NULL
1559 || h->type != bfd_link_hash_defined)
1560 return bfd_reloc_ep_not_found;
1562 ep = (h->u.def.value
1563 + h->u.def.section->output_section->vma
1564 + h->u.def.section->output_offset);
1570 case R_V850_CALLT_6_7_OFFSET:
1573 struct bfd_link_hash_entry * h;
1575 /* Get the value of __ctbp. */
1576 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
1577 if (h == (struct bfd_link_hash_entry *) NULL
1578 || h->type != bfd_link_hash_defined)
1579 return bfd_reloc_ctbp_not_found;
1581 ctbp = (h->u.def.value
1582 + h->u.def.section->output_section->vma
1583 + h->u.def.section->output_offset);
1588 case R_V850_CALLT_16_16_OFFSET:
1591 struct bfd_link_hash_entry * h;
1593 if (sym_sec == NULL)
1594 return bfd_reloc_undefined;
1596 /* Get the value of __ctbp. */
1597 h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE);
1598 if (h == (struct bfd_link_hash_entry *) NULL
1599 || h->type != bfd_link_hash_defined)
1600 return bfd_reloc_ctbp_not_found;
1602 ctbp = (h->u.def.value
1603 + h->u.def.section->output_section->vma
1604 + h->u.def.section->output_offset);
1606 value -= sym_sec->output_section->vma;
1607 value -= (ctbp - sym_sec->output_section->vma);
1612 case R_V850_GNU_VTINHERIT:
1613 case R_V850_GNU_VTENTRY:
1614 case R_V850_LONGCALL:
1615 case R_V850_LONGJUMP:
1617 return bfd_reloc_ok;
1620 return bfd_reloc_notsupported;
1623 /* Perform the relocation. */
1624 return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
1627 /* Relocate an V850 ELF section. */
1630 v850_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1631 contents, relocs, local_syms, local_sections)
1633 struct bfd_link_info *info;
1635 asection *input_section;
1637 Elf_Internal_Rela *relocs;
1638 Elf_Internal_Sym *local_syms;
1639 asection **local_sections;
1641 Elf_Internal_Shdr *symtab_hdr;
1642 struct elf_link_hash_entry **sym_hashes;
1643 Elf_Internal_Rela *rel;
1644 Elf_Internal_Rela *relend;
1646 if (info->relocatable)
1649 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1650 sym_hashes = elf_sym_hashes (input_bfd);
1652 if (sym_hashes == NULL)
1654 info->callbacks->warning
1655 (info, "no hash table available",
1656 NULL, input_bfd, input_section, (bfd_vma) 0);
1661 /* Reset the list of remembered HI16S relocs to empty. */
1662 free_hi16s = previous_hi16s;
1663 previous_hi16s = NULL;
1667 relend = relocs + input_section->reloc_count;
1668 for (; rel < relend; rel++)
1671 reloc_howto_type *howto;
1672 unsigned long r_symndx;
1673 Elf_Internal_Sym *sym;
1675 struct elf_link_hash_entry *h;
1677 bfd_reloc_status_type r;
1679 r_symndx = ELF32_R_SYM (rel->r_info);
1680 r_type = ELF32_R_TYPE (rel->r_info);
1682 if (r_type == R_V850_GNU_VTENTRY
1683 || r_type == R_V850_GNU_VTINHERIT)
1686 /* This is a final link. */
1687 howto = v850_elf_howto_table + r_type;
1691 if (r_symndx < symtab_hdr->sh_info)
1693 sym = local_syms + r_symndx;
1694 sec = local_sections[r_symndx];
1695 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1699 bfd_boolean unresolved_reloc, warned;
1701 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1702 r_symndx, symtab_hdr, sym_hashes,
1704 unresolved_reloc, warned);
1707 /* FIXME: We should use the addend, but the COFF relocations don't. */
1708 r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
1710 contents, rel->r_offset,
1711 relocation, rel->r_addend,
1712 info, sec, h == NULL);
1714 if (r != bfd_reloc_ok)
1717 const char * msg = (const char *)0;
1720 name = h->root.root.string;
1723 name = (bfd_elf_string_from_elf_section
1724 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1725 if (name == NULL || *name == '\0')
1726 name = bfd_section_name (input_bfd, sec);
1731 case bfd_reloc_overflow:
1732 if (! ((*info->callbacks->reloc_overflow)
1733 (info, (h ? &h->root : NULL), name, howto->name,
1734 (bfd_vma) 0, input_bfd, input_section,
1739 case bfd_reloc_undefined:
1740 if (! ((*info->callbacks->undefined_symbol)
1741 (info, name, input_bfd, input_section,
1742 rel->r_offset, TRUE)))
1746 case bfd_reloc_outofrange:
1747 msg = _("internal error: out of range error");
1750 case bfd_reloc_notsupported:
1751 msg = _("internal error: unsupported relocation error");
1754 case bfd_reloc_dangerous:
1755 msg = _("internal error: dangerous relocation");
1758 case bfd_reloc_gp_not_found:
1759 msg = _("could not locate special linker symbol __gp");
1762 case bfd_reloc_ep_not_found:
1763 msg = _("could not locate special linker symbol __ep");
1766 case bfd_reloc_ctbp_not_found:
1767 msg = _("could not locate special linker symbol __ctbp");
1771 msg = _("internal error: unknown error");
1775 if (!((*info->callbacks->warning)
1776 (info, msg, name, input_bfd, input_section,
1788 v850_elf_gc_sweep_hook (abfd, info, sec, relocs)
1789 bfd *abfd ATTRIBUTE_UNUSED;
1790 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1791 asection *sec ATTRIBUTE_UNUSED;
1792 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
1794 /* No got and plt entries for v850-elf. */
1799 v850_elf_gc_mark_hook (sec, info, rel, h, sym)
1801 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1802 Elf_Internal_Rela *rel;
1803 struct elf_link_hash_entry *h;
1804 Elf_Internal_Sym *sym;
1808 switch (ELF32_R_TYPE (rel->r_info))
1810 case R_V850_GNU_VTINHERIT:
1811 case R_V850_GNU_VTENTRY:
1815 switch (h->root.type)
1817 case bfd_link_hash_defined:
1818 case bfd_link_hash_defweak:
1819 return h->root.u.def.section;
1821 case bfd_link_hash_common:
1822 return h->root.u.c.p->section;
1830 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1835 /* Set the right machine number. */
1838 v850_elf_object_p (abfd)
1841 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1845 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850);
1848 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e);
1851 bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e1);
1857 /* Store the machine number in the flags field. */
1860 v850_elf_final_write_processing (abfd, linker)
1862 bfd_boolean linker ATTRIBUTE_UNUSED;
1866 switch (bfd_get_mach (abfd))
1869 case bfd_mach_v850: val = E_V850_ARCH; break;
1870 case bfd_mach_v850e: val = E_V850E_ARCH; break;
1871 case bfd_mach_v850e1: val = E_V850E1_ARCH; break;
1874 elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
1875 elf_elfheader (abfd)->e_flags |= val;
1878 /* Function to keep V850 specific file flags. */
1881 v850_elf_set_private_flags (abfd, flags)
1885 BFD_ASSERT (!elf_flags_init (abfd)
1886 || elf_elfheader (abfd)->e_flags == flags);
1888 elf_elfheader (abfd)->e_flags = flags;
1889 elf_flags_init (abfd) = TRUE;
1893 /* Merge backend specific data from an object file
1894 to the output object file when linking. */
1896 v850_elf_merge_private_bfd_data (ibfd, obfd)
1903 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1904 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1907 in_flags = elf_elfheader (ibfd)->e_flags;
1908 out_flags = elf_elfheader (obfd)->e_flags;
1910 if (! elf_flags_init (obfd))
1912 /* If the input is the default architecture then do not
1913 bother setting the flags for the output architecture,
1914 instead allow future merges to do this. If no future
1915 merges ever set these flags then they will retain their
1916 unitialised values, which surprise surprise, correspond
1917 to the default values. */
1918 if (bfd_get_arch_info (ibfd)->the_default)
1921 elf_flags_init (obfd) = TRUE;
1922 elf_elfheader (obfd)->e_flags = in_flags;
1924 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
1925 && bfd_get_arch_info (obfd)->the_default)
1926 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
1931 /* Check flag compatibility. */
1932 if (in_flags == out_flags)
1935 if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH)
1936 && (in_flags & EF_V850_ARCH) != E_V850_ARCH)
1938 /* Allow v850e1 binaries to be linked with v850e binaries.
1939 Set the output binary to v850e. */
1940 if ((in_flags & EF_V850_ARCH) == E_V850E1_ARCH
1941 && (out_flags & EF_V850_ARCH) == E_V850E_ARCH)
1944 if ((in_flags & EF_V850_ARCH) == E_V850E_ARCH
1945 && (out_flags & EF_V850_ARCH) == E_V850E1_ARCH)
1947 elf_elfheader (obfd)->e_flags =
1948 ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH);
1952 _bfd_error_handler (_("%B: Architecture mismatch with previous modules"),
1959 /* Display the flags field. */
1962 v850_elf_print_private_bfd_data (abfd, ptr)
1966 FILE * file = (FILE *) ptr;
1968 BFD_ASSERT (abfd != NULL && ptr != NULL);
1970 _bfd_elf_print_private_bfd_data (abfd, ptr);
1972 /* xgettext:c-format */
1973 fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
1975 switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
1978 case E_V850_ARCH: fprintf (file, _("v850 architecture")); break;
1979 case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
1980 case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break;
1988 /* V850 ELF uses four common sections. One is the usual one, and the
1989 others are for (small) objects in one of the special data areas:
1990 small, tiny and zero. All the objects are kept together, and then
1991 referenced via the gp register, the ep register or the r0 register
1992 respectively, which yields smaller, faster assembler code. This
1993 approach is copied from elf32-mips.c. */
1995 static asection v850_elf_scom_section;
1996 static asymbol v850_elf_scom_symbol;
1997 static asymbol * v850_elf_scom_symbol_ptr;
1998 static asection v850_elf_tcom_section;
1999 static asymbol v850_elf_tcom_symbol;
2000 static asymbol * v850_elf_tcom_symbol_ptr;
2001 static asection v850_elf_zcom_section;
2002 static asymbol v850_elf_zcom_symbol;
2003 static asymbol * v850_elf_zcom_symbol_ptr;
2005 /* Given a BFD section, try to locate the
2006 corresponding ELF section index. */
2009 v850_elf_section_from_bfd_section (abfd, sec, retval)
2010 bfd *abfd ATTRIBUTE_UNUSED;
2014 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
2015 *retval = SHN_V850_SCOMMON;
2016 else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
2017 *retval = SHN_V850_TCOMMON;
2018 else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
2019 *retval = SHN_V850_ZCOMMON;
2026 /* Handle the special V850 section numbers that a symbol may use. */
2029 v850_elf_symbol_processing (abfd, asym)
2033 elf_symbol_type * elfsym = (elf_symbol_type *) asym;
2036 indx = elfsym->internal_elf_sym.st_shndx;
2038 /* If the section index is an "ordinary" index, then it may
2039 refer to a v850 specific section created by the assembler.
2040 Check the section's type and change the index it matches.
2042 FIXME: Should we alter the st_shndx field as well ? */
2044 if (indx < elf_numsections (abfd))
2045 switch (elf_elfsections(abfd)[indx]->sh_type)
2047 case SHT_V850_SCOMMON:
2048 indx = SHN_V850_SCOMMON;
2051 case SHT_V850_TCOMMON:
2052 indx = SHN_V850_TCOMMON;
2055 case SHT_V850_ZCOMMON:
2056 indx = SHN_V850_ZCOMMON;
2065 case SHN_V850_SCOMMON:
2066 if (v850_elf_scom_section.name == NULL)
2068 /* Initialize the small common section. */
2069 v850_elf_scom_section.name = ".scommon";
2070 v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
2071 v850_elf_scom_section.output_section = & v850_elf_scom_section;
2072 v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
2073 v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
2074 v850_elf_scom_symbol.name = ".scommon";
2075 v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
2076 v850_elf_scom_symbol.section = & v850_elf_scom_section;
2077 v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
2079 asym->section = & v850_elf_scom_section;
2080 asym->value = elfsym->internal_elf_sym.st_size;
2083 case SHN_V850_TCOMMON:
2084 if (v850_elf_tcom_section.name == NULL)
2086 /* Initialize the tcommon section. */
2087 v850_elf_tcom_section.name = ".tcommon";
2088 v850_elf_tcom_section.flags = SEC_IS_COMMON;
2089 v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
2090 v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
2091 v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
2092 v850_elf_tcom_symbol.name = ".tcommon";
2093 v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
2094 v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
2095 v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
2097 asym->section = & v850_elf_tcom_section;
2098 asym->value = elfsym->internal_elf_sym.st_size;
2101 case SHN_V850_ZCOMMON:
2102 if (v850_elf_zcom_section.name == NULL)
2104 /* Initialize the zcommon section. */
2105 v850_elf_zcom_section.name = ".zcommon";
2106 v850_elf_zcom_section.flags = SEC_IS_COMMON;
2107 v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
2108 v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
2109 v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
2110 v850_elf_zcom_symbol.name = ".zcommon";
2111 v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
2112 v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
2113 v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
2115 asym->section = & v850_elf_zcom_section;
2116 asym->value = elfsym->internal_elf_sym.st_size;
2121 /* Hook called by the linker routine which adds symbols from an object
2122 file. We must handle the special v850 section numbers here. */
2125 v850_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2127 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2128 Elf_Internal_Sym *sym;
2129 const char **namep ATTRIBUTE_UNUSED;
2130 flagword *flagsp ATTRIBUTE_UNUSED;
2134 unsigned int indx = sym->st_shndx;
2136 /* If the section index is an "ordinary" index, then it may
2137 refer to a v850 specific section created by the assembler.
2138 Check the section's type and change the index it matches.
2140 FIXME: Should we alter the st_shndx field as well ? */
2142 if (indx < elf_numsections (abfd))
2143 switch (elf_elfsections(abfd)[indx]->sh_type)
2145 case SHT_V850_SCOMMON:
2146 indx = SHN_V850_SCOMMON;
2149 case SHT_V850_TCOMMON:
2150 indx = SHN_V850_TCOMMON;
2153 case SHT_V850_ZCOMMON:
2154 indx = SHN_V850_ZCOMMON;
2163 case SHN_V850_SCOMMON:
2164 *secp = bfd_make_section_old_way (abfd, ".scommon");
2165 (*secp)->flags |= SEC_IS_COMMON;
2166 *valp = sym->st_size;
2169 case SHN_V850_TCOMMON:
2170 *secp = bfd_make_section_old_way (abfd, ".tcommon");
2171 (*secp)->flags |= SEC_IS_COMMON;
2172 *valp = sym->st_size;
2175 case SHN_V850_ZCOMMON:
2176 *secp = bfd_make_section_old_way (abfd, ".zcommon");
2177 (*secp)->flags |= SEC_IS_COMMON;
2178 *valp = sym->st_size;
2186 v850_elf_link_output_symbol_hook (info, name, sym, input_sec, h)
2187 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2188 const char *name ATTRIBUTE_UNUSED;
2189 Elf_Internal_Sym *sym;
2190 asection *input_sec;
2191 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED;
2193 /* If we see a common symbol, which implies a relocatable link, then
2194 if a symbol was in a special common section in an input file, mark
2195 it as a special common in the output file. */
2197 if (sym->st_shndx == SHN_COMMON)
2199 if (strcmp (input_sec->name, ".scommon") == 0)
2200 sym->st_shndx = SHN_V850_SCOMMON;
2201 else if (strcmp (input_sec->name, ".tcommon") == 0)
2202 sym->st_shndx = SHN_V850_TCOMMON;
2203 else if (strcmp (input_sec->name, ".zcommon") == 0)
2204 sym->st_shndx = SHN_V850_ZCOMMON;
2211 v850_elf_section_from_shdr (bfd *abfd,
2212 Elf_Internal_Shdr *hdr,
2216 /* There ought to be a place to keep ELF backend specific flags, but
2217 at the moment there isn't one. We just keep track of the
2218 sections by their name, instead. */
2220 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2223 switch (hdr->sh_type)
2225 case SHT_V850_SCOMMON:
2226 case SHT_V850_TCOMMON:
2227 case SHT_V850_ZCOMMON:
2228 if (! bfd_set_section_flags (abfd, hdr->bfd_section,
2229 (bfd_get_section_flags (abfd,
2238 /* Set the correct type for a V850 ELF section. We do this
2239 by the section name, which is a hack, but ought to work. */
2242 v850_elf_fake_sections (abfd, hdr, sec)
2243 bfd *abfd ATTRIBUTE_UNUSED;
2244 Elf_Internal_Shdr *hdr;
2247 register const char * name;
2249 name = bfd_get_section_name (abfd, sec);
2251 if (strcmp (name, ".scommon") == 0)
2253 hdr->sh_type = SHT_V850_SCOMMON;
2255 else if (strcmp (name, ".tcommon") == 0)
2257 hdr->sh_type = SHT_V850_TCOMMON;
2259 else if (strcmp (name, ".zcommon") == 0)
2260 hdr->sh_type = SHT_V850_ZCOMMON;
2265 /* Delete some bytes from a section while relaxing. */
2268 v850_elf_relax_delete_bytes (abfd, sec, addr, toaddr, count)
2275 Elf_Internal_Shdr *symtab_hdr;
2276 Elf32_External_Sym *extsyms;
2277 Elf32_External_Sym *esym;
2278 Elf32_External_Sym *esymend;
2280 unsigned int sec_shndx;
2282 Elf_Internal_Rela *irel;
2283 Elf_Internal_Rela *irelend;
2284 struct elf_link_hash_entry *sym_hash;
2285 Elf_Internal_Shdr *shndx_hdr;
2286 Elf_External_Sym_Shndx *shndx;
2288 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2289 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
2291 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2293 contents = elf_section_data (sec)->this_hdr.contents;
2295 /* The deletion must stop at the next ALIGN reloc for an alignment
2296 power larger than the number of bytes we are deleting. */
2298 /* Actually delete the bytes. */
2299 #if (DEBUG_RELAX & 2)
2300 fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n",
2301 sec->name, addr, toaddr, count );
2303 memmove (contents + addr, contents + addr + count,
2304 toaddr - addr - count);
2305 memset (contents + toaddr-count, 0, count);
2307 /* Adjust all the relocs. */
2308 irel = elf_section_data (sec)->relocs;
2309 irelend = irel + sec->reloc_count;
2310 shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2311 shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
2313 for (; irel < irelend; irel++)
2315 bfd_vma raddr, paddr, symval;
2316 Elf_Internal_Sym isym;
2318 /* Get the new reloc address. */
2319 raddr = irel->r_offset;
2320 if ((raddr >= (addr + count) && raddr < toaddr))
2321 irel->r_offset -= count;
2323 if (raddr >= addr && raddr < addr + count)
2325 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2330 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN)
2333 bfd_elf32_swap_symbol_in (abfd,
2334 extsyms + ELF32_R_SYM (irel->r_info),
2335 shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL,
2338 if (isym.st_shndx != sec_shndx)
2341 /* Get the value of the symbol referred to by the reloc. */
2342 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2344 symval = isym.st_value;
2345 #if (DEBUG_RELAX & 2)
2347 char * name = bfd_elf_string_from_elf_section
2348 (abfd, symtab_hdr->sh_link, isym.st_name);
2350 "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2351 sec->name, name, isym.st_name,
2352 sec->output_section->vma, sec->output_offset,
2353 isym.st_value, irel->r_addend);
2360 struct elf_link_hash_entry * h;
2362 /* An external symbol. */
2363 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2365 h = elf_sym_hashes (abfd) [indx];
2366 BFD_ASSERT (h != NULL);
2368 symval = h->root.u.def.value;
2369 #if (DEBUG_RELAX & 2)
2371 "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2372 sec->name, h->root.root.string, h->root.u.def.value,
2373 sec->output_section->vma, sec->output_offset, irel->r_addend);
2377 paddr = symval + irel->r_addend;
2379 if ( (symval >= addr + count && symval < toaddr)
2380 && (paddr < addr + count || paddr >= toaddr))
2381 irel->r_addend += count;
2382 else if ( (symval < addr + count || symval >= toaddr)
2383 && (paddr >= addr + count && paddr < toaddr))
2384 irel->r_addend -= count;
2387 /* Adjust the local symbols defined in this section. */
2389 esymend = esym + symtab_hdr->sh_info;
2391 for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
2393 Elf_Internal_Sym isym;
2395 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2397 if (isym.st_shndx == sec_shndx
2398 && isym.st_value >= addr + count
2399 && isym.st_value < toaddr)
2401 isym.st_value -= count;
2403 if (isym.st_value + isym.st_size >= toaddr)
2404 isym.st_size += count;
2406 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2408 else if (isym.st_shndx == sec_shndx
2409 && isym.st_value < addr + count)
2411 if (isym.st_value+isym.st_size >= addr + count
2412 && isym.st_value+isym.st_size < toaddr)
2413 isym.st_size -= count;
2415 if (isym.st_value >= addr
2416 && isym.st_value < addr + count)
2417 isym.st_value = addr;
2419 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2423 /* Now adjust the global symbols defined in this section. */
2424 esym = extsyms + symtab_hdr->sh_info;
2425 esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
2427 for (index = 0; esym < esymend; esym ++, index ++)
2429 Elf_Internal_Sym isym;
2431 bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym);
2432 sym_hash = elf_sym_hashes (abfd) [index];
2434 if (isym.st_shndx == sec_shndx
2435 && ((sym_hash)->root.type == bfd_link_hash_defined
2436 || (sym_hash)->root.type == bfd_link_hash_defweak)
2437 && (sym_hash)->root.u.def.section == sec
2438 && (sym_hash)->root.u.def.value >= addr + count
2439 && (sym_hash)->root.u.def.value < toaddr)
2441 if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr)
2443 isym.st_size += count;
2444 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2447 (sym_hash)->root.u.def.value -= count;
2449 else if (isym.st_shndx == sec_shndx
2450 && ((sym_hash)->root.type == bfd_link_hash_defined
2451 || (sym_hash)->root.type == bfd_link_hash_defweak)
2452 && (sym_hash)->root.u.def.section == sec
2453 && (sym_hash)->root.u.def.value < addr + count)
2455 if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count
2456 && (sym_hash)->root.u.def.value+isym.st_size < toaddr)
2457 isym.st_size -= count;
2459 if ((sym_hash)->root.u.def.value >= addr
2460 && (sym_hash)->root.u.def.value < addr + count)
2461 (sym_hash)->root.u.def.value = addr;
2463 bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx);
2473 #define NOP_OPCODE (0x0000)
2474 #define MOVHI 0x0640 /* 4byte */
2475 #define MOVHI_MASK 0x07e0
2476 #define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */
2477 #define MOVHI_R2(insn) ((insn) >> 11)
2478 #define MOVEA 0x0620 /* 2byte */
2479 #define MOVEA_MASK 0x07e0
2480 #define MOVEA_R1(insn) ((insn) & 0x1f)
2481 #define MOVEA_R2(insn) ((insn) >> 11)
2482 #define JARL_4 0x00040780 /* 4byte */
2483 #define JARL_4_MASK 0xFFFF07FF
2484 #define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11)
2485 #define ADD_I 0x0240 /* 2byte */
2486 #define ADD_I_MASK 0x07e0
2487 #define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */
2488 #define ADD_R2(insn) ((insn) >> 11)
2489 #define JMP_R 0x0060 /* 2byte */
2490 #define JMP_R_MASK 0xFFE0
2491 #define JMP_R1(insn) ((insn) & 0x1f)
2494 v850_elf_relax_section (abfd, sec, link_info, again)
2497 struct bfd_link_info *link_info;
2500 Elf_Internal_Shdr *symtab_hdr;
2501 Elf_Internal_Rela *internal_relocs;
2502 Elf_Internal_Rela *irel;
2503 Elf_Internal_Rela *irelend;
2504 Elf_Internal_Rela *irelalign = NULL;
2505 Elf_Internal_Sym *isymbuf = NULL;
2506 bfd_byte *contents = NULL;
2509 int align_pad_size = 0;
2510 bfd_boolean result = TRUE;
2514 if (link_info->relocatable
2515 || (sec->flags & SEC_RELOC) == 0
2516 || sec->reloc_count == 0)
2519 symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
2521 internal_relocs = (_bfd_elf_link_read_relocs
2522 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2523 link_info->keep_memory));
2524 if (internal_relocs == NULL)
2527 irelend = internal_relocs + sec->reloc_count;
2529 while (addr < sec->size)
2533 for (irel = internal_relocs; irel < irelend; irel ++)
2534 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
2535 && irel->r_offset > addr
2536 && irel->r_offset < toaddr)
2537 toaddr = irel->r_offset;
2540 fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n",
2541 addr, toaddr, align_pad_size);
2546 bfd_vma alignmoveto;
2548 alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend);
2549 alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend);
2551 if (alignmoveto < alignto)
2555 align_pad_size = alignto - alignmoveto;
2557 fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n",
2558 alignmoveto, toaddr, align_pad_size);
2560 if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto,
2561 toaddr, align_pad_size))
2564 for (i = BFD_ALIGN (toaddr - align_pad_size, 1);
2565 (i + 1) < toaddr; i += 2)
2566 bfd_put_16 (abfd, NOP_OPCODE, contents + i);
2574 for (irel = internal_relocs; irel < irelend; irel++)
2581 Elf_Internal_Rela *hi_irelfn;
2582 Elf_Internal_Rela *lo_irelfn;
2583 Elf_Internal_Rela *irelcall;
2584 bfd_signed_vma foff;
2586 if (! (irel->r_offset >= addr && irel->r_offset < toaddr
2587 && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL
2588 || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)))
2592 fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n",
2598 /* Get the section contents. */
2599 if (contents == NULL)
2601 if (elf_section_data (sec)->this_hdr.contents != NULL)
2602 contents = elf_section_data (sec)->this_hdr.contents;
2605 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2610 /* Read this BFD's local symbols if we haven't done so already. */
2611 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
2613 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2614 if (isymbuf == NULL)
2615 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2616 symtab_hdr->sh_info, 0,
2618 if (isymbuf == NULL)
2622 laddr = irel->r_offset;
2624 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL)
2626 /* Check code for -mlong-calls output. */
2627 if (laddr + 16 <= (bfd_vma) sec->size)
2629 insn[0] = bfd_get_16 (abfd, contents + laddr);
2630 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2631 insn[2] = bfd_get_32 (abfd, contents + laddr + 8);
2632 insn[3] = bfd_get_16 (abfd, contents + laddr + 12);
2633 insn[4] = bfd_get_16 (abfd, contents + laddr + 14);
2635 if ((insn[0] & MOVHI_MASK) != MOVHI
2636 || MOVHI_R1 (insn[0]) != 0)
2640 && ((insn[1] & MOVEA_MASK) != MOVEA
2641 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2645 && (insn[2] & JARL_4_MASK) != JARL_4)
2649 && ((insn[3] & ADD_I_MASK) != ADD_I
2650 || ADD_I5 (insn[3]) != 4
2651 || JARL_R2 (insn[2]) != ADD_R2 (insn[3])))
2655 && ((insn[4] & JMP_R_MASK) != JMP_R
2656 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4])))
2661 ((*_bfd_error_handler)
2662 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns",
2663 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2670 ((*_bfd_error_handler)
2671 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x",
2672 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2677 /* Get the reloc for the address from which the register is
2678 being loaded. This reloc will tell us which function is
2679 actually being called. */
2680 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2681 if (hi_irelfn->r_offset == laddr + 2
2682 && ELF32_R_TYPE (hi_irelfn->r_info)
2683 == (int) R_V850_HI16_S)
2686 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2687 if (lo_irelfn->r_offset == laddr + 6
2688 && ELF32_R_TYPE (lo_irelfn->r_info)
2689 == (int) R_V850_LO16)
2692 for (irelcall = internal_relocs; irelcall < irelend; irelcall ++)
2693 if (irelcall->r_offset == laddr + 8
2694 && ELF32_R_TYPE (irelcall->r_info)
2695 == (int) R_V850_22_PCREL)
2698 if ( hi_irelfn == irelend
2699 || lo_irelfn == irelend
2700 || irelcall == irelend)
2702 ((*_bfd_error_handler)
2703 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc",
2704 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2709 if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info)
2711 Elf_Internal_Sym * isym;
2713 /* A local symbol. */
2714 isym = isymbuf + ELF32_R_SYM (irelcall->r_info);
2716 symval = isym->st_value;
2721 struct elf_link_hash_entry * h;
2723 /* An external symbol. */
2724 indx = ELF32_R_SYM (irelcall->r_info) - symtab_hdr->sh_info;
2725 h = elf_sym_hashes (abfd)[indx];
2726 BFD_ASSERT (h != NULL);
2728 if ( h->root.type != bfd_link_hash_defined
2729 && h->root.type != bfd_link_hash_defweak)
2730 /* This appears to be a reference to an undefined
2731 symbol. Just ignore it--it will be caught by the
2732 regular reloc processing. */
2735 symval = h->root.u.def.value;
2738 if (symval + irelcall->r_addend != irelcall->r_offset + 4)
2740 ((*_bfd_error_handler)
2741 ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx",
2742 bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset ));
2747 /* Get the value of the symbol referred to by the reloc. */
2748 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2750 Elf_Internal_Sym *isym;
2753 /* A local symbol. */
2754 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2756 if (isym->st_shndx == SHN_UNDEF)
2757 sym_sec = bfd_und_section_ptr;
2758 else if (isym->st_shndx == SHN_ABS)
2759 sym_sec = bfd_abs_section_ptr;
2760 else if (isym->st_shndx == SHN_COMMON)
2761 sym_sec = bfd_com_section_ptr;
2763 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2764 symval = (isym->st_value
2765 + sym_sec->output_section->vma
2766 + sym_sec->output_offset);
2771 struct elf_link_hash_entry *h;
2773 /* An external symbol. */
2774 indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info;
2775 h = elf_sym_hashes (abfd)[indx];
2776 BFD_ASSERT (h != NULL);
2778 if ( h->root.type != bfd_link_hash_defined
2779 && h->root.type != bfd_link_hash_defweak)
2780 /* This appears to be a reference to an undefined
2781 symbol. Just ignore it--it will be caught by the
2782 regular reloc processing. */
2785 symval = (h->root.u.def.value
2786 + h->root.u.def.section->output_section->vma
2787 + h->root.u.def.section->output_offset);
2790 addend = irel->r_addend;
2792 foff = (symval + addend
2794 + sec->output_section->vma
2795 + sec->output_offset
2798 fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2801 + sec->output_section->vma
2802 + sec->output_offset),
2803 symval, addend, foff);
2806 if (foff < -0x100000 || foff >= 0x100000)
2807 /* After all that work, we can't shorten this function call. */
2810 /* For simplicity of coding, we are going to modify the section
2811 contents, the section relocs, and the BFD symbol table. We
2812 must tell the rest of the code not to free up this
2813 information. It would be possible to instead create a table
2814 of changes which have to be made, as is done in coff-mips.c;
2815 that would be more work, but would require less memory when
2816 the linker is run. */
2817 elf_section_data (sec)->relocs = internal_relocs;
2818 elf_section_data (sec)->this_hdr.contents = contents;
2819 symtab_hdr->contents = (bfd_byte *) isymbuf;
2821 /* Replace the long call with a jarl. */
2822 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL);
2826 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2827 /* If this needs to be changed because of future relaxing,
2828 it will be handled here like other internal IND12W
2831 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf),
2832 contents + irel->r_offset);
2834 /* We can't fully resolve this yet, because the external
2835 symbol value may be changed by future relaxing.
2836 We let the final link phase handle it. */
2837 bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11),
2838 contents + irel->r_offset);
2841 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
2843 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
2845 ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE);
2847 if (! v850_elf_relax_delete_bytes (abfd, sec,
2848 irel->r_offset + 4, toaddr, 12))
2851 align_pad_size += 12;
2853 else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP)
2855 /* Check code for -mlong-jumps output. */
2856 if (laddr + 10 <= (bfd_vma) sec->size)
2858 insn[0] = bfd_get_16 (abfd, contents + laddr);
2859 insn[1] = bfd_get_16 (abfd, contents + laddr + 4);
2860 insn[2] = bfd_get_16 (abfd, contents + laddr + 8);
2862 if ((insn[0] & MOVHI_MASK) != MOVHI
2863 || MOVHI_R1 (insn[0]) != 0)
2867 && ((insn[1] & MOVEA_MASK) != MOVEA
2868 || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1])))
2872 && ((insn[2] & JMP_R_MASK) != JMP_R
2873 || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2])))
2878 ((*_bfd_error_handler)
2879 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns",
2880 bfd_get_filename (abfd), (unsigned long) irel->r_offset));
2887 ((*_bfd_error_handler)
2888 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x",
2889 bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match]));
2894 /* Get the reloc for the address from which the register is
2895 being loaded. This reloc will tell us which function is
2896 actually being called. */
2897 for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++)
2898 if (hi_irelfn->r_offset == laddr + 2
2899 && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S)
2902 for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++)
2903 if (lo_irelfn->r_offset == laddr + 6
2904 && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16)
2907 if ( hi_irelfn == irelend
2908 || lo_irelfn == irelend)
2910 ((*_bfd_error_handler)
2911 ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc",
2912 bfd_get_filename (abfd), (unsigned long) irel->r_offset ));
2917 /* Get the value of the symbol referred to by the reloc. */
2918 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
2920 Elf_Internal_Sym * isym;
2923 /* A local symbol. */
2924 isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info);
2926 if (isym->st_shndx == SHN_UNDEF)
2927 sym_sec = bfd_und_section_ptr;
2928 else if (isym->st_shndx == SHN_ABS)
2929 sym_sec = bfd_abs_section_ptr;
2930 else if (isym->st_shndx == SHN_COMMON)
2931 sym_sec = bfd_com_section_ptr;
2933 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
2934 symval = (isym->st_value
2935 + sym_sec->output_section->vma
2936 + sym_sec->output_offset);
2939 char * name = bfd_elf_string_from_elf_section
2940 (abfd, symtab_hdr->sh_link, isym->st_name);
2942 fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
2943 sym_sec->name, name, isym->st_name,
2944 sym_sec->output_section->vma,
2945 sym_sec->output_offset,
2946 isym->st_value, irel->r_addend);
2953 struct elf_link_hash_entry * h;
2955 /* An external symbol. */
2956 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2957 h = elf_sym_hashes (abfd)[indx];
2958 BFD_ASSERT (h != NULL);
2960 if ( h->root.type != bfd_link_hash_defined
2961 && h->root.type != bfd_link_hash_defweak)
2962 /* This appears to be a reference to an undefined
2963 symbol. Just ignore it--it will be caught by the
2964 regular reloc processing. */
2967 symval = (h->root.u.def.value
2968 + h->root.u.def.section->output_section->vma
2969 + h->root.u.def.section->output_offset);
2972 "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n",
2973 sec->name, h->root.root.string, h->root.u.def.value,
2974 sec->output_section->vma, sec->output_offset, irel->r_addend);
2978 addend = irel->r_addend;
2980 foff = (symval + addend
2982 + sec->output_section->vma
2983 + sec->output_offset
2986 fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n",
2989 + sec->output_section->vma
2990 + sec->output_offset),
2991 symval, addend, foff);
2993 if (foff < -0x100000 || foff >= 0x100000)
2994 /* After all that work, we can't shorten this function call. */
2997 /* For simplicity of coding, we are going to modify the section
2998 contents, the section relocs, and the BFD symbol table. We
2999 must tell the rest of the code not to free up this
3000 information. It would be possible to instead create a table
3001 of changes which have to be made, as is done in coff-mips.c;
3002 that would be more work, but would require less memory when
3003 the linker is run. */
3004 elf_section_data (sec)->relocs = internal_relocs;
3005 elf_section_data (sec)->this_hdr.contents = contents;
3006 symtab_hdr->contents = (bfd_byte *) isymbuf;
3008 if (foff < -0x100 || foff >= 0x100)
3010 /* Replace the long jump with a jr. */
3013 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL);
3015 irel->r_addend = addend;
3018 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3019 /* If this needs to be changed because of future relaxing,
3020 it will be handled here like other internal IND12W
3023 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf),
3024 contents + irel->r_offset);
3026 /* We can't fully resolve this yet, because the external
3027 symbol value may be changed by future relaxing.
3028 We let the final link phase handle it. */
3029 bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset);
3032 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3034 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3035 if (!v850_elf_relax_delete_bytes (abfd, sec,
3036 irel->r_offset + 4, toaddr, 6))
3039 align_pad_size += 6;
3043 /* Replace the long jump with a br. */
3046 ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL);
3048 irel->r_addend = addend;
3051 if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info)
3052 /* If this needs to be changed because of future relaxing,
3053 it will be handled here like other internal IND12W
3056 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070),
3057 contents + irel->r_offset);
3059 /* We can't fully resolve this yet, because the external
3060 symbol value may be changed by future relaxing.
3061 We let the final link phase handle it. */
3062 bfd_put_16 (abfd, 0x0585, contents + irel->r_offset);
3065 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE);
3067 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE);
3068 if (!v850_elf_relax_delete_bytes (abfd, sec,
3069 irel->r_offset + 2, toaddr, 8))
3072 align_pad_size += 8;
3078 for (irel = internal_relocs; irel < irelend; irel++)
3080 if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN
3081 && irel->r_offset == toaddr)
3083 irel->r_offset -= align_pad_size;
3085 if (irelalign == NULL || irelalign->r_addend > irel->r_addend)
3096 fprintf (stderr, "relax pad %d shorten %d -> %d\n",
3099 sec->size - align_pad_size);
3101 sec->size -= align_pad_size;
3105 if (internal_relocs != NULL
3106 && elf_section_data (sec)->relocs != internal_relocs)
3107 free (internal_relocs);
3109 if (contents != NULL
3110 && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents)
3114 && symtab_hdr->contents != (bfd_byte *) isymbuf)
3124 static struct bfd_elf_special_section const v850_elf_special_sections[]=
3126 { ".sdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3127 + SHF_V850_GPREL) },
3128 { ".rosdata", 8, -2, SHT_PROGBITS, (SHF_ALLOC
3129 + SHF_V850_GPREL) },
3130 { ".sbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3131 + SHF_V850_GPREL) },
3132 { ".scommon", 8, -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE
3133 + SHF_V850_GPREL) },
3134 { ".tdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3135 + SHF_V850_EPREL) },
3136 { ".tbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3137 + SHF_V850_EPREL) },
3138 { ".tcommon", 8, -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE
3139 + SHF_V850_R0REL) },
3140 { ".zdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3141 + SHF_V850_R0REL) },
3142 { ".rozdata", 8, -2, SHT_PROGBITS, (SHF_ALLOC
3143 + SHF_V850_R0REL) },
3144 { ".zbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE
3145 + SHF_V850_R0REL) },
3146 { ".zcommon", 8, -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE
3147 + SHF_V850_R0REL) },
3148 { ".call_table_data", 16, 0, SHT_PROGBITS, (SHF_ALLOC
3150 { ".call_table_text", 16, 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE
3152 { NULL, 0, 0, 0, 0 }
3155 #define TARGET_LITTLE_SYM bfd_elf32_v850_vec
3156 #define TARGET_LITTLE_NAME "elf32-v850"
3157 #define ELF_ARCH bfd_arch_v850
3158 #define ELF_MACHINE_CODE EM_V850
3159 #define ELF_MACHINE_ALT1 EM_CYGNUS_V850
3160 #define ELF_MAXPAGESIZE 0x1000
3162 #define elf_info_to_howto v850_elf_info_to_howto_rela
3163 #define elf_info_to_howto_rel v850_elf_info_to_howto_rel
3165 #define elf_backend_check_relocs v850_elf_check_relocs
3166 #define elf_backend_relocate_section v850_elf_relocate_section
3167 #define elf_backend_object_p v850_elf_object_p
3168 #define elf_backend_final_write_processing v850_elf_final_write_processing
3169 #define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
3170 #define elf_backend_symbol_processing v850_elf_symbol_processing
3171 #define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
3172 #define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
3173 #define elf_backend_section_from_shdr v850_elf_section_from_shdr
3174 #define elf_backend_fake_sections v850_elf_fake_sections
3175 #define elf_backend_gc_mark_hook v850_elf_gc_mark_hook
3176 #define elf_backend_gc_sweep_hook v850_elf_gc_sweep_hook
3177 #define elf_backend_special_sections v850_elf_special_sections
3179 #define elf_backend_can_gc_sections 1
3180 #define elf_backend_rela_normal 1
3182 #define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
3183 #define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
3184 #define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
3185 #define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
3186 #define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
3187 #define bfd_elf32_bfd_relax_section v850_elf_relax_section
3189 #define elf_symbol_leading_char '_'
3191 #include "elf32-target.h"