1 /* AVR-specific support for 32-bit ELF
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
28 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
29 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
30 static void avr_info_to_howto_rela
31 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
32 static asection *elf32_avr_gc_mark_hook
33 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
34 struct elf_link_hash_entry *, Elf_Internal_Sym *));
35 static bfd_boolean elf32_avr_gc_sweep_hook
36 PARAMS ((bfd *, struct bfd_link_info *, asection *,
37 const Elf_Internal_Rela *));
38 static bfd_boolean elf32_avr_check_relocs
39 PARAMS ((bfd *, struct bfd_link_info *, asection *,
40 const Elf_Internal_Rela *));
41 static bfd_reloc_status_type avr_final_link_relocate
42 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
43 Elf_Internal_Rela *, bfd_vma));
44 static bfd_boolean elf32_avr_relocate_section
45 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
46 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
47 static void bfd_elf_avr_final_write_processing PARAMS ((bfd *, bfd_boolean));
48 static bfd_boolean elf32_avr_object_p PARAMS ((bfd *));
50 static reloc_howto_type elf_avr_howto_table[] =
52 HOWTO (R_AVR_NONE, /* type */
54 2, /* size (0 = byte, 1 = short, 2 = long) */
56 FALSE, /* pc_relative */
58 complain_overflow_bitfield, /* complain_on_overflow */
59 bfd_elf_generic_reloc, /* special_function */
60 "R_AVR_NONE", /* name */
61 FALSE, /* partial_inplace */
64 FALSE), /* pcrel_offset */
66 HOWTO (R_AVR_32, /* type */
68 2, /* size (0 = byte, 1 = short, 2 = long) */
70 FALSE, /* pc_relative */
72 complain_overflow_bitfield, /* complain_on_overflow */
73 bfd_elf_generic_reloc, /* special_function */
74 "R_AVR_32", /* name */
75 FALSE, /* partial_inplace */
76 0xffffffff, /* src_mask */
77 0xffffffff, /* dst_mask */
78 FALSE), /* pcrel_offset */
80 /* A 7 bit PC relative relocation. */
81 HOWTO (R_AVR_7_PCREL, /* type */
83 1, /* size (0 = byte, 1 = short, 2 = long) */
85 TRUE, /* pc_relative */
87 complain_overflow_bitfield, /* complain_on_overflow */
88 bfd_elf_generic_reloc, /* special_function */
89 "R_AVR_7_PCREL", /* name */
90 FALSE, /* partial_inplace */
91 0xffff, /* src_mask */
92 0xffff, /* dst_mask */
93 TRUE), /* pcrel_offset */
95 /* A 13 bit PC relative relocation. */
96 HOWTO (R_AVR_13_PCREL, /* type */
98 1, /* size (0 = byte, 1 = short, 2 = long) */
100 TRUE, /* pc_relative */
102 complain_overflow_bitfield, /* complain_on_overflow */
103 bfd_elf_generic_reloc, /* special_function */
104 "R_AVR_13_PCREL", /* name */
105 FALSE, /* partial_inplace */
106 0xfff, /* src_mask */
107 0xfff, /* dst_mask */
108 TRUE), /* pcrel_offset */
110 /* A 16 bit absolute relocation. */
111 HOWTO (R_AVR_16, /* type */
113 1, /* size (0 = byte, 1 = short, 2 = long) */
115 FALSE, /* pc_relative */
117 complain_overflow_dont, /* complain_on_overflow */
118 bfd_elf_generic_reloc, /* special_function */
119 "R_AVR_16", /* name */
120 FALSE, /* partial_inplace */
121 0xffff, /* src_mask */
122 0xffff, /* dst_mask */
123 FALSE), /* pcrel_offset */
125 /* A 16 bit absolute relocation for command address. */
126 HOWTO (R_AVR_16_PM, /* type */
128 1, /* size (0 = byte, 1 = short, 2 = long) */
130 FALSE, /* pc_relative */
132 complain_overflow_bitfield, /* complain_on_overflow */
133 bfd_elf_generic_reloc, /* special_function */
134 "R_AVR_16_PM", /* name */
135 FALSE, /* partial_inplace */
136 0xffff, /* src_mask */
137 0xffff, /* dst_mask */
138 FALSE), /* pcrel_offset */
139 /* A low 8 bit absolute relocation of 16 bit address.
141 HOWTO (R_AVR_LO8_LDI, /* type */
143 1, /* size (0 = byte, 1 = short, 2 = long) */
145 FALSE, /* pc_relative */
147 complain_overflow_dont, /* complain_on_overflow */
148 bfd_elf_generic_reloc, /* special_function */
149 "R_AVR_LO8_LDI", /* name */
150 FALSE, /* partial_inplace */
151 0xffff, /* src_mask */
152 0xffff, /* dst_mask */
153 FALSE), /* pcrel_offset */
154 /* A high 8 bit absolute relocation of 16 bit address.
156 HOWTO (R_AVR_HI8_LDI, /* type */
158 1, /* size (0 = byte, 1 = short, 2 = long) */
160 FALSE, /* pc_relative */
162 complain_overflow_dont, /* complain_on_overflow */
163 bfd_elf_generic_reloc, /* special_function */
164 "R_AVR_HI8_LDI", /* name */
165 FALSE, /* partial_inplace */
166 0xffff, /* src_mask */
167 0xffff, /* dst_mask */
168 FALSE), /* pcrel_offset */
169 /* A high 6 bit absolute relocation of 22 bit address.
171 HOWTO (R_AVR_HH8_LDI, /* type */
173 1, /* size (0 = byte, 1 = short, 2 = long) */
175 FALSE, /* pc_relative */
177 complain_overflow_dont, /* complain_on_overflow */
178 bfd_elf_generic_reloc, /* special_function */
179 "R_AVR_HH8_LDI", /* name */
180 FALSE, /* partial_inplace */
181 0xffff, /* src_mask */
182 0xffff, /* dst_mask */
183 FALSE), /* pcrel_offset */
184 /* A negative low 8 bit absolute relocation of 16 bit address.
186 HOWTO (R_AVR_LO8_LDI_NEG, /* type */
188 1, /* size (0 = byte, 1 = short, 2 = long) */
190 FALSE, /* pc_relative */
192 complain_overflow_dont, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_AVR_LO8_LDI_NEG", /* name */
195 FALSE, /* partial_inplace */
196 0xffff, /* src_mask */
197 0xffff, /* dst_mask */
198 FALSE), /* pcrel_offset */
199 /* A hegative high 8 bit absolute relocation of 16 bit address.
201 HOWTO (R_AVR_HI8_LDI_NEG, /* type */
203 1, /* size (0 = byte, 1 = short, 2 = long) */
205 FALSE, /* pc_relative */
207 complain_overflow_dont, /* complain_on_overflow */
208 bfd_elf_generic_reloc, /* special_function */
209 "R_AVR_HI8_LDI_NEG", /* name */
210 FALSE, /* partial_inplace */
211 0xffff, /* src_mask */
212 0xffff, /* dst_mask */
213 FALSE), /* pcrel_offset */
214 /* A hegative high 6 bit absolute relocation of 22 bit address.
216 HOWTO (R_AVR_HH8_LDI_NEG, /* type */
218 1, /* size (0 = byte, 1 = short, 2 = long) */
220 FALSE, /* pc_relative */
222 complain_overflow_dont, /* complain_on_overflow */
223 bfd_elf_generic_reloc, /* special_function */
224 "R_AVR_HH8_LDI_NEG", /* name */
225 FALSE, /* partial_inplace */
226 0xffff, /* src_mask */
227 0xffff, /* dst_mask */
228 FALSE), /* pcrel_offset */
229 /* A low 8 bit absolute relocation of 24 bit program memory address.
231 HOWTO (R_AVR_LO8_LDI_PM, /* type */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
235 FALSE, /* pc_relative */
237 complain_overflow_dont, /* complain_on_overflow */
238 bfd_elf_generic_reloc, /* special_function */
239 "R_AVR_LO8_LDI_PM", /* name */
240 FALSE, /* partial_inplace */
241 0xffff, /* src_mask */
242 0xffff, /* dst_mask */
243 FALSE), /* pcrel_offset */
244 /* A high 8 bit absolute relocation of 16 bit program memory address.
246 HOWTO (R_AVR_HI8_LDI_PM, /* type */
248 1, /* size (0 = byte, 1 = short, 2 = long) */
250 FALSE, /* pc_relative */
252 complain_overflow_dont, /* complain_on_overflow */
253 bfd_elf_generic_reloc, /* special_function */
254 "R_AVR_HI8_LDI_PM", /* name */
255 FALSE, /* partial_inplace */
256 0xffff, /* src_mask */
257 0xffff, /* dst_mask */
258 FALSE), /* pcrel_offset */
259 /* A high 8 bit absolute relocation of 24 bit program memory address.
261 HOWTO (R_AVR_HH8_LDI_PM, /* type */
263 1, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE, /* pc_relative */
267 complain_overflow_dont, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_AVR_HH8_LDI_PM", /* name */
270 FALSE, /* partial_inplace */
271 0xffff, /* src_mask */
272 0xffff, /* dst_mask */
273 FALSE), /* pcrel_offset */
274 /* A low 8 bit absolute relocation of a negative 24 bit
275 program memory address. For LDI command. */
276 HOWTO (R_AVR_LO8_LDI_PM_NEG, /* type */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_dont, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_AVR_LO8_LDI_PM_NEG", /* name */
285 FALSE, /* partial_inplace */
286 0xffff, /* src_mask */
287 0xffff, /* dst_mask */
288 FALSE), /* pcrel_offset */
289 /* A high 8 bit absolute relocation of a negative 16 bit
290 program memory address. For LDI command. */
291 HOWTO (R_AVR_HI8_LDI_PM_NEG, /* type */
293 1, /* size (0 = byte, 1 = short, 2 = long) */
295 FALSE, /* pc_relative */
297 complain_overflow_dont, /* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_AVR_HI8_LDI_PM_NEG", /* name */
300 FALSE, /* partial_inplace */
301 0xffff, /* src_mask */
302 0xffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
304 /* A high 8 bit absolute relocation of a negative 24 bit
305 program memory address. For LDI command. */
306 HOWTO (R_AVR_HH8_LDI_PM_NEG, /* type */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE, /* pc_relative */
312 complain_overflow_dont, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_AVR_HH8_LDI_PM_NEG", /* name */
315 FALSE, /* partial_inplace */
316 0xffff, /* src_mask */
317 0xffff, /* dst_mask */
318 FALSE), /* pcrel_offset */
319 /* Relocation for CALL command in ATmega. */
320 HOWTO (R_AVR_CALL, /* type */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE, /* pc_relative */
326 complain_overflow_dont, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_AVR_CALL", /* name */
329 FALSE, /* partial_inplace */
330 0xffffffff, /* src_mask */
331 0xffffffff, /* dst_mask */
332 FALSE) /* pcrel_offset */
335 /* Map BFD reloc types to AVR ELF reloc types. */
339 bfd_reloc_code_real_type bfd_reloc_val;
340 unsigned int elf_reloc_val;
343 static const struct avr_reloc_map avr_reloc_map[] =
345 { BFD_RELOC_NONE, R_AVR_NONE },
346 { BFD_RELOC_32, R_AVR_32 },
347 { BFD_RELOC_AVR_7_PCREL, R_AVR_7_PCREL },
348 { BFD_RELOC_AVR_13_PCREL, R_AVR_13_PCREL },
349 { BFD_RELOC_16, R_AVR_16 },
350 { BFD_RELOC_AVR_16_PM, R_AVR_16_PM },
351 { BFD_RELOC_AVR_LO8_LDI, R_AVR_LO8_LDI},
352 { BFD_RELOC_AVR_HI8_LDI, R_AVR_HI8_LDI },
353 { BFD_RELOC_AVR_HH8_LDI, R_AVR_HH8_LDI },
354 { BFD_RELOC_AVR_LO8_LDI_NEG, R_AVR_LO8_LDI_NEG },
355 { BFD_RELOC_AVR_HI8_LDI_NEG, R_AVR_HI8_LDI_NEG },
356 { BFD_RELOC_AVR_HH8_LDI_NEG, R_AVR_HH8_LDI_NEG },
357 { BFD_RELOC_AVR_LO8_LDI_PM, R_AVR_LO8_LDI_PM },
358 { BFD_RELOC_AVR_HI8_LDI_PM, R_AVR_HI8_LDI_PM },
359 { BFD_RELOC_AVR_HH8_LDI_PM, R_AVR_HH8_LDI_PM },
360 { BFD_RELOC_AVR_LO8_LDI_PM_NEG, R_AVR_LO8_LDI_PM_NEG },
361 { BFD_RELOC_AVR_HI8_LDI_PM_NEG, R_AVR_HI8_LDI_PM_NEG },
362 { BFD_RELOC_AVR_HH8_LDI_PM_NEG, R_AVR_HH8_LDI_PM_NEG },
363 { BFD_RELOC_AVR_CALL, R_AVR_CALL }
366 static reloc_howto_type *
367 bfd_elf32_bfd_reloc_type_lookup (abfd, code)
368 bfd *abfd ATTRIBUTE_UNUSED;
369 bfd_reloc_code_real_type code;
374 i < sizeof (avr_reloc_map) / sizeof (struct avr_reloc_map);
377 if (avr_reloc_map[i].bfd_reloc_val == code)
378 return &elf_avr_howto_table[avr_reloc_map[i].elf_reloc_val];
384 /* Set the howto pointer for an AVR ELF reloc. */
387 avr_info_to_howto_rela (abfd, cache_ptr, dst)
388 bfd *abfd ATTRIBUTE_UNUSED;
390 Elf_Internal_Rela *dst;
394 r_type = ELF32_R_TYPE (dst->r_info);
395 BFD_ASSERT (r_type < (unsigned int) R_AVR_max);
396 cache_ptr->howto = &elf_avr_howto_table[r_type];
400 elf32_avr_gc_mark_hook (sec, info, rel, h, sym)
402 struct bfd_link_info *info ATTRIBUTE_UNUSED;
403 Elf_Internal_Rela *rel;
404 struct elf_link_hash_entry *h;
405 Elf_Internal_Sym *sym;
409 switch (ELF32_R_TYPE (rel->r_info))
412 switch (h->root.type)
414 case bfd_link_hash_defined:
415 case bfd_link_hash_defweak:
416 return h->root.u.def.section;
418 case bfd_link_hash_common:
419 return h->root.u.c.p->section;
427 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
433 elf32_avr_gc_sweep_hook (abfd, info, sec, relocs)
434 bfd *abfd ATTRIBUTE_UNUSED;
435 struct bfd_link_info *info ATTRIBUTE_UNUSED;
436 asection *sec ATTRIBUTE_UNUSED;
437 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
439 /* We don't use got and plt entries for avr. */
443 /* Look through the relocs for a section during the first phase.
444 Since we don't do .gots or .plts, we just need to consider the
445 virtual table relocs for gc. */
448 elf32_avr_check_relocs (abfd, info, sec, relocs)
450 struct bfd_link_info *info;
452 const Elf_Internal_Rela *relocs;
454 Elf_Internal_Shdr *symtab_hdr;
455 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
456 const Elf_Internal_Rela *rel;
457 const Elf_Internal_Rela *rel_end;
459 if (info->relocatable)
462 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
463 sym_hashes = elf_sym_hashes (abfd);
464 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
465 if (!elf_bad_symtab (abfd))
466 sym_hashes_end -= symtab_hdr->sh_info;
468 rel_end = relocs + sec->reloc_count;
469 for (rel = relocs; rel < rel_end; rel++)
471 struct elf_link_hash_entry *h;
472 unsigned long r_symndx;
474 r_symndx = ELF32_R_SYM (rel->r_info);
475 if (r_symndx < symtab_hdr->sh_info)
478 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
484 /* Perform a single relocation. By default we use the standard BFD
485 routines, but a few relocs, we have to do them ourselves. */
487 static bfd_reloc_status_type
488 avr_final_link_relocate (howto, input_bfd, input_section,
489 contents, rel, relocation)
490 reloc_howto_type * howto;
492 asection * input_section;
494 Elf_Internal_Rela * rel;
497 bfd_reloc_status_type r = bfd_reloc_ok;
504 contents += rel->r_offset;
505 srel = (bfd_signed_vma) relocation;
506 srel += rel->r_addend;
507 srel -= rel->r_offset;
508 srel -= 2; /* Branch instructions add 2 to the PC... */
509 srel -= (input_section->output_section->vma +
510 input_section->output_offset);
513 return bfd_reloc_outofrange;
514 if (srel > ((1 << 7) - 1) || (srel < - (1 << 7)))
515 return bfd_reloc_overflow;
516 x = bfd_get_16 (input_bfd, contents);
517 x = (x & 0xfc07) | (((srel >> 1) << 3) & 0x3f8);
518 bfd_put_16 (input_bfd, x, contents);
522 contents += rel->r_offset;
523 srel = (bfd_signed_vma) relocation;
524 srel += rel->r_addend;
525 srel -= rel->r_offset;
526 srel -= 2; /* Branch instructions add 2 to the PC... */
527 srel -= (input_section->output_section->vma +
528 input_section->output_offset);
531 return bfd_reloc_outofrange;
533 /* AVR addresses commands as words. */
536 /* Check for overflow. */
537 if (srel < -2048 || srel > 2047)
539 /* Apply WRAPAROUND if possible. */
540 switch (bfd_get_mach (input_bfd))
547 return bfd_reloc_overflow;
551 x = bfd_get_16 (input_bfd, contents);
552 x = (x & 0xf000) | (srel & 0xfff);
553 bfd_put_16 (input_bfd, x, contents);
557 contents += rel->r_offset;
558 srel = (bfd_signed_vma) relocation + rel->r_addend;
559 x = bfd_get_16 (input_bfd, contents);
560 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
561 bfd_put_16 (input_bfd, x, contents);
565 contents += rel->r_offset;
566 srel = (bfd_signed_vma) relocation + rel->r_addend;
567 srel = (srel >> 8) & 0xff;
568 x = bfd_get_16 (input_bfd, contents);
569 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
570 bfd_put_16 (input_bfd, x, contents);
574 contents += rel->r_offset;
575 srel = (bfd_signed_vma) relocation + rel->r_addend;
576 srel = (srel >> 16) & 0xff;
577 x = bfd_get_16 (input_bfd, contents);
578 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
579 bfd_put_16 (input_bfd, x, contents);
582 case R_AVR_LO8_LDI_NEG:
583 contents += rel->r_offset;
584 srel = (bfd_signed_vma) relocation + rel->r_addend;
586 x = bfd_get_16 (input_bfd, contents);
587 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
588 bfd_put_16 (input_bfd, x, contents);
591 case R_AVR_HI8_LDI_NEG:
592 contents += rel->r_offset;
593 srel = (bfd_signed_vma) relocation + rel->r_addend;
595 srel = (srel >> 8) & 0xff;
596 x = bfd_get_16 (input_bfd, contents);
597 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
598 bfd_put_16 (input_bfd, x, contents);
601 case R_AVR_HH8_LDI_NEG:
602 contents += rel->r_offset;
603 srel = (bfd_signed_vma) relocation + rel->r_addend;
605 srel = (srel >> 16) & 0xff;
606 x = bfd_get_16 (input_bfd, contents);
607 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
608 bfd_put_16 (input_bfd, x, contents);
611 case R_AVR_LO8_LDI_PM:
612 contents += rel->r_offset;
613 srel = (bfd_signed_vma) relocation + rel->r_addend;
615 return bfd_reloc_outofrange;
617 x = bfd_get_16 (input_bfd, contents);
618 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
619 bfd_put_16 (input_bfd, x, contents);
622 case R_AVR_HI8_LDI_PM:
623 contents += rel->r_offset;
624 srel = (bfd_signed_vma) relocation + rel->r_addend;
626 return bfd_reloc_outofrange;
628 srel = (srel >> 8) & 0xff;
629 x = bfd_get_16 (input_bfd, contents);
630 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
631 bfd_put_16 (input_bfd, x, contents);
634 case R_AVR_HH8_LDI_PM:
635 contents += rel->r_offset;
636 srel = (bfd_signed_vma) relocation + rel->r_addend;
638 return bfd_reloc_outofrange;
640 srel = (srel >> 16) & 0xff;
641 x = bfd_get_16 (input_bfd, contents);
642 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
643 bfd_put_16 (input_bfd, x, contents);
646 case R_AVR_LO8_LDI_PM_NEG:
647 contents += rel->r_offset;
648 srel = (bfd_signed_vma) relocation + rel->r_addend;
651 return bfd_reloc_outofrange;
653 x = bfd_get_16 (input_bfd, contents);
654 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
655 bfd_put_16 (input_bfd, x, contents);
658 case R_AVR_HI8_LDI_PM_NEG:
659 contents += rel->r_offset;
660 srel = (bfd_signed_vma) relocation + rel->r_addend;
663 return bfd_reloc_outofrange;
665 srel = (srel >> 8) & 0xff;
666 x = bfd_get_16 (input_bfd, contents);
667 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
668 bfd_put_16 (input_bfd, x, contents);
671 case R_AVR_HH8_LDI_PM_NEG:
672 contents += rel->r_offset;
673 srel = (bfd_signed_vma) relocation + rel->r_addend;
676 return bfd_reloc_outofrange;
678 srel = (srel >> 16) & 0xff;
679 x = bfd_get_16 (input_bfd, contents);
680 x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
681 bfd_put_16 (input_bfd, x, contents);
685 contents += rel->r_offset;
686 srel = (bfd_signed_vma) relocation + rel->r_addend;
688 return bfd_reloc_outofrange;
690 x = bfd_get_16 (input_bfd, contents);
691 x |= ((srel & 0x10000) | ((srel << 3) & 0x1f00000)) >> 16;
692 bfd_put_16 (input_bfd, x, contents);
693 bfd_put_16 (input_bfd, (bfd_vma) srel & 0xffff, contents+2);
697 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
698 contents, rel->r_offset,
699 relocation, rel->r_addend);
705 /* Relocate an AVR ELF section. */
707 elf32_avr_relocate_section (output_bfd, info, input_bfd, input_section,
708 contents, relocs, local_syms, local_sections)
709 bfd *output_bfd ATTRIBUTE_UNUSED;
710 struct bfd_link_info *info;
712 asection *input_section;
714 Elf_Internal_Rela *relocs;
715 Elf_Internal_Sym *local_syms;
716 asection **local_sections;
718 Elf_Internal_Shdr * symtab_hdr;
719 struct elf_link_hash_entry ** sym_hashes;
720 Elf_Internal_Rela * rel;
721 Elf_Internal_Rela * relend;
723 if (info->relocatable)
726 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
727 sym_hashes = elf_sym_hashes (input_bfd);
728 relend = relocs + input_section->reloc_count;
730 for (rel = relocs; rel < relend; rel ++)
732 reloc_howto_type * howto;
733 unsigned long r_symndx;
734 Elf_Internal_Sym * sym;
736 struct elf_link_hash_entry * h;
738 bfd_reloc_status_type r;
739 const char * name = NULL;
742 /* This is a final link. */
743 r_type = ELF32_R_TYPE (rel->r_info);
744 r_symndx = ELF32_R_SYM (rel->r_info);
745 howto = elf_avr_howto_table + ELF32_R_TYPE (rel->r_info);
750 if (r_symndx < symtab_hdr->sh_info)
752 sym = local_syms + r_symndx;
753 sec = local_sections [r_symndx];
754 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
756 name = bfd_elf_string_from_elf_section
757 (input_bfd, symtab_hdr->sh_link, sym->st_name);
758 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
762 bfd_boolean unresolved_reloc, warned;
764 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
765 r_symndx, symtab_hdr, sym_hashes,
767 unresolved_reloc, warned);
770 r = avr_final_link_relocate (howto, input_bfd, input_section,
771 contents, rel, relocation);
773 if (r != bfd_reloc_ok)
775 const char * msg = (const char *) NULL;
779 case bfd_reloc_overflow:
780 r = info->callbacks->reloc_overflow
781 (info, name, howto->name, (bfd_vma) 0,
782 input_bfd, input_section, rel->r_offset);
785 case bfd_reloc_undefined:
786 r = info->callbacks->undefined_symbol
787 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
790 case bfd_reloc_outofrange:
791 msg = _("internal error: out of range error");
794 case bfd_reloc_notsupported:
795 msg = _("internal error: unsupported relocation error");
798 case bfd_reloc_dangerous:
799 msg = _("internal error: dangerous relocation");
803 msg = _("internal error: unknown error");
808 r = info->callbacks->warning
809 (info, msg, name, input_bfd, input_section, rel->r_offset);
819 /* The final processing done just before writing out a AVR ELF object
820 file. This gets the AVR architecture right based on the machine
824 bfd_elf_avr_final_write_processing (abfd, linker)
826 bfd_boolean linker ATTRIBUTE_UNUSED;
830 switch (bfd_get_mach (abfd))
834 val = E_AVR_MACH_AVR2;
838 val = E_AVR_MACH_AVR1;
842 val = E_AVR_MACH_AVR3;
846 val = E_AVR_MACH_AVR4;
850 val = E_AVR_MACH_AVR5;
854 elf_elfheader (abfd)->e_machine = EM_AVR;
855 elf_elfheader (abfd)->e_flags &= ~ EF_AVR_MACH;
856 elf_elfheader (abfd)->e_flags |= val;
859 /* Set the right machine number. */
862 elf32_avr_object_p (abfd)
865 unsigned int e_set = bfd_mach_avr2;
866 if (elf_elfheader (abfd)->e_machine == EM_AVR
867 || elf_elfheader (abfd)->e_machine == EM_AVR_OLD)
869 int e_mach = elf_elfheader (abfd)->e_flags & EF_AVR_MACH;
873 case E_AVR_MACH_AVR2:
874 e_set = bfd_mach_avr2;
877 case E_AVR_MACH_AVR1:
878 e_set = bfd_mach_avr1;
881 case E_AVR_MACH_AVR3:
882 e_set = bfd_mach_avr3;
885 case E_AVR_MACH_AVR4:
886 e_set = bfd_mach_avr4;
889 case E_AVR_MACH_AVR5:
890 e_set = bfd_mach_avr5;
894 return bfd_default_set_arch_mach (abfd, bfd_arch_avr,
898 #define ELF_ARCH bfd_arch_avr
899 #define ELF_MACHINE_CODE EM_AVR
900 #define ELF_MACHINE_ALT1 EM_AVR_OLD
901 #define ELF_MAXPAGESIZE 1
903 #define TARGET_LITTLE_SYM bfd_elf32_avr_vec
904 #define TARGET_LITTLE_NAME "elf32-avr"
906 #define elf_info_to_howto avr_info_to_howto_rela
907 #define elf_info_to_howto_rel NULL
908 #define elf_backend_relocate_section elf32_avr_relocate_section
909 #define elf_backend_gc_mark_hook elf32_avr_gc_mark_hook
910 #define elf_backend_gc_sweep_hook elf32_avr_gc_sweep_hook
911 #define elf_backend_check_relocs elf32_avr_check_relocs
912 #define elf_backend_can_gc_sections 1
913 #define elf_backend_rela_normal 1
914 #define elf_backend_final_write_processing \
915 bfd_elf_avr_final_write_processing
916 #define elf_backend_object_p elf32_avr_object_p
918 #include "elf32-target.h"