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* elf-bfd.h (struct elf_backend_data): Add rela_normal.
[thirdparty/binutils-gdb.git] / bfd / elf32-fr30.c
CommitLineData
252b5132 1/* FR30-specific support for 32-bit ELF.
b491616a 2 Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
252b5132
RH		 3
4This file is part of BFD, the Binary File Descriptor library.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20#include "bfd.h"
21#include "sysdep.h"
22#include "libbfd.h"
23#include "elf-bfd.h"
24#include "elf/fr30.h"
25
26/* Forward declarations. */
27static bfd_reloc_status_type fr30_elf_i20_reloc
28 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
29static bfd_reloc_status_type fr30_elf_i32_reloc
30 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
31static reloc_howto_type * fr30_reloc_type_lookup
32 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
6609fa74 33static void fr30_info_to_howto_rela
252b5132 34 PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
6609fa74 35static boolean fr30_elf_relocate_section
dc810e39
AM		 36 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
37 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
252b5132 38static bfd_reloc_status_type fr30_final_link_relocate
dc810e39
AM		 39 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
40 Elf_Internal_Rela *, bfd_vma));
252b5132 41static boolean fr30_elf_gc_sweep_hook
dc810e39
AM		 42 PARAMS ((bfd *, struct bfd_link_info *, asection *,
43 const Elf_Internal_Rela *));
252b5132 44static asection * fr30_elf_gc_mark_hook
dc810e39
AM		 45 PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
46 struct elf_link_hash_entry *, Elf_Internal_Sym *));
47static boolean fr30_elf_check_relocs
48 PARAMS ((bfd *, struct bfd_link_info *, asection *,
49 const Elf_Internal_Rela *));
252b5132
RH		 50
51static reloc_howto_type fr30_elf_howto_table [] =
52{
53 /* This reloc does nothing. */
54 HOWTO (R_FR30_NONE, /* type */
55 0, /* rightshift */
56 2, /* size (0 = byte, 1 = short, 2 = long) */
57 32, /* bitsize */
58 false, /* pc_relative */
59 0, /* bitpos */
60 complain_overflow_bitfield, /* complain_on_overflow */
61 bfd_elf_generic_reloc, /* special_function */
62 "R_FR30_NONE", /* name */
63 false, /* partial_inplace */
64 0, /* src_mask */
65 0, /* dst_mask */
66 false), /* pcrel_offset */
67
68 /* An 8 bit absolute relocation. */
69 HOWTO (R_FR30_8, /* type */
70 0, /* rightshift */
71 1, /* size (0 = byte, 1 = short, 2 = long) */
72 8, /* bitsize */
73 false, /* pc_relative */
74 4, /* bitpos */
75 complain_overflow_bitfield, /* complain_on_overflow */
76 bfd_elf_generic_reloc, /* special_function */
77 "R_FR30_8", /* name */
78 true, /* partial_inplace */
79 0x0000, /* src_mask */
80 0x0ff0, /* dst_mask */
81 false), /* pcrel_offset */
82
83 /* A 20 bit absolute relocation. */
84 HOWTO (R_FR30_20, /* type */
85 0, /* rightshift */
86 2, /* size (0 = byte, 1 = short, 2 = long) */
87 20, /* bitsize */
88 false, /* pc_relative */
89 0, /* bitpos */
90 complain_overflow_bitfield, /* complain_on_overflow */
91 fr30_elf_i20_reloc, /* special_function */
92 "R_FR30_20", /* name */
93 true, /* partial_inplace */
94 0x00000000, /* src_mask */
95 0x00f0ffff, /* dst_mask */
96 false), /* pcrel_offset */
97
98 /* A 32 bit absolute relocation. */
99 HOWTO (R_FR30_32, /* type */
100 0, /* rightshift */
101 2, /* size (0 = byte, 1 = short, 2 = long) */
102 32, /* bitsize */
103 false, /* pc_relative */
104 0, /* bitpos */
105 complain_overflow_bitfield, /* complain_on_overflow */
106 bfd_elf_generic_reloc, /* special_function */
107 "R_FR30_32", /* name */
108 true, /* partial_inplace */
109 0x00000000, /* src_mask */
110 0xffffffff, /* dst_mask */
111 false), /* pcrel_offset */
112
113 /* A 32 bit into 48 bits absolute relocation. */
114 HOWTO (R_FR30_48, /* type */
115 0, /* rightshift */
116 2, /* size (0 = byte, 1 = short, 2 = long) */
117 32, /* bitsize */
118 false, /* pc_relative */
119 0, /* bitpos */
120 complain_overflow_bitfield, /* complain_on_overflow */
121 fr30_elf_i32_reloc, /* special_function */
122 "R_FR30_48", /* name */
123 true, /* partial_inplace */
124 0x00000000, /* src_mask */
125 0xffffffff, /* dst_mask */
126 false), /* pcrel_offset */
127
128 /* A 6 bit absolute relocation. */
129 HOWTO (R_FR30_6_IN_4, /* type */
130 2, /* rightshift */
131 1, /* size (0 = byte, 1 = short, 2 = long) */
132 6, /* bitsize */
133 false, /* pc_relative */
134 4, /* bitpos */
135 complain_overflow_unsigned, /* complain_on_overflow */
136 bfd_elf_generic_reloc, /* special_function */
137 "R_FR30_6_IN_4", /* name */
138 true, /* partial_inplace */
139 0x0000, /* src_mask */
140 0x00f0, /* dst_mask */
141 false), /* pcrel_offset */
6609fa74 142
252b5132
RH		 143 /* An 8 bit absolute relocation. */
144 HOWTO (R_FR30_8_IN_8, /* type */
145 0, /* rightshift */
146 1, /* size (0 = byte, 1 = short, 2 = long) */
147 8, /* bitsize */
148 false, /* pc_relative */
149 4, /* bitpos */
150 complain_overflow_signed, /* complain_on_overflow */
151 bfd_elf_generic_reloc,/* special_function */
152 "R_FR30_8_IN_8", /* name */
153 true, /* partial_inplace */
154 0x0000, /* src_mask */
155 0x0ff0, /* dst_mask */
156 false), /* pcrel_offset */
6609fa74 157
252b5132
RH		 158 /* A 9 bit absolute relocation. */
159 HOWTO (R_FR30_9_IN_8, /* type */
160 1, /* rightshift */
161 1, /* size (0 = byte, 1 = short, 2 = long) */
162 9, /* bitsize */
163 false, /* pc_relative */
164 4, /* bitpos */
165 complain_overflow_signed, /* complain_on_overflow */
166 bfd_elf_generic_reloc,/* special_function */
167 "R_FR30_9_IN_8", /* name */
168 true, /* partial_inplace */
169 0x0000, /* src_mask */
170 0x0ff0, /* dst_mask */
171 false), /* pcrel_offset */
6609fa74 172
252b5132
RH		 173 /* A 10 bit absolute relocation. */
174 HOWTO (R_FR30_10_IN_8, /* type */
175 2, /* rightshift */
176 1, /* size (0 = byte, 1 = short, 2 = long) */
177 10, /* bitsize */
178 false, /* pc_relative */
179 4, /* bitpos */
180 complain_overflow_signed, /* complain_on_overflow */
181 bfd_elf_generic_reloc,/* special_function */
182 "R_FR30_10_IN_8", /* name */
183 true, /* partial_inplace */
184 0x0000, /* src_mask */
185 0x0ff0, /* dst_mask */
186 false), /* pcrel_offset */
187
188 /* A PC relative 9 bit relocation, right shifted by 1. */
189 HOWTO (R_FR30_9_PCREL, /* type */
190 1, /* rightshift */
191 1, /* size (0 = byte, 1 = short, 2 = long) */
192 9, /* bitsize */
193 true, /* pc_relative */
194 0, /* bitpos */
195 complain_overflow_signed, /* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_FR30_9_PCREL", /* name */
198 false, /* partial_inplace */
199 0x0000, /* src_mask */
200 0x00ff, /* dst_mask */
201 false), /* pcrel_offset */
202
203 /* A PC relative 12 bit relocation, right shifted by 1. */
204 HOWTO (R_FR30_12_PCREL, /* type */
205 1, /* rightshift */
206 1, /* size (0 = byte, 1 = short, 2 = long) */
207 12, /* bitsize */
208 true, /* pc_relative */
209 0, /* bitpos */
210 complain_overflow_signed, /* complain_on_overflow */
211 bfd_elf_generic_reloc, /* special_function */
212 "R_FR30_12_PCREL", /* name */
213 false, /* partial_inplace */
214 0x0000, /* src_mask */
215 0x07ff, /* dst_mask */
216 false), /* pcrel_offset */
217 /* GNU extension to record C++ vtable hierarchy */
218 HOWTO (R_FR30_GNU_VTINHERIT, /* type */
219 0, /* rightshift */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
221 0, /* bitsize */
222 false, /* pc_relative */
223 0, /* bitpos */
224 complain_overflow_dont, /* complain_on_overflow */
225 NULL, /* special_function */
226 "R_FR30_GNU_VTINHERIT", /* name */
227 false, /* partial_inplace */
228 0, /* src_mask */
229 0, /* dst_mask */
230 false), /* pcrel_offset */
231
232 /* GNU extension to record C++ vtable member usage */
233 HOWTO (R_FR30_GNU_VTENTRY, /* type */
234 0, /* rightshift */
235 2, /* size (0 = byte, 1 = short, 2 = long) */
236 0, /* bitsize */
237 false, /* pc_relative */
238 0, /* bitpos */
239 complain_overflow_dont, /* complain_on_overflow */
240 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
241 "R_FR30_GNU_VTENTRY", /* name */
242 false, /* partial_inplace */
243 0, /* src_mask */
244 0, /* dst_mask */
245 false), /* pcrel_offset */
252b5132
RH		 246};
247\f
248/* Utility to actually perform an R_FR30_20 reloc. */
249
250static bfd_reloc_status_type
251fr30_elf_i20_reloc (abfd, reloc_entry, symbol, data,
252 input_section, output_bfd, error_message)
253 bfd * abfd;
254 arelent * reloc_entry;
255 asymbol * symbol;
256 PTR data;
257 asection * input_section;
258 bfd * output_bfd;
5f771d47 259 char ** error_message ATTRIBUTE_UNUSED;
252b5132
RH		 260{
261 bfd_vma relocation;
262 unsigned long x;
6609fa74 263
252b5132
RH		 264 /* This part is from bfd_elf_generic_reloc. */
265 if (output_bfd != (bfd *) NULL
266 && (symbol->flags & BSF_SECTION_SYM) == 0
267 && (! reloc_entry->howto->partial_inplace
268 || reloc_entry->addend == 0))
269 {
270 reloc_entry->address += input_section->output_offset;
271 return bfd_reloc_ok;
272 }
273
274 if (output_bfd != NULL)
275 /* FIXME: See bfd_perform_relocation. Is this right? */
276 return bfd_reloc_ok;
277
278 relocation =
279 symbol->value
280 + symbol->section->output_section->vma
281 + symbol->section->output_offset
282 + reloc_entry->addend;
283
fc633e5b 284 if (relocation > (((bfd_vma) 1 << 20) - 1))
252b5132
RH		 285 return bfd_reloc_overflow;
286
23ccc829 287 x = bfd_get_32 (abfd, (char *) data + reloc_entry->address);
252b5132 288 x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
dc810e39 289 bfd_put_32 (abfd, (bfd_vma) x, (char *) data + reloc_entry->address);
252b5132
RH		 290
291 return bfd_reloc_ok;
292}
252b5132
RH		 293\f
294/* Utility to actually perform a R_FR30_48 reloc. */
295
296static bfd_reloc_status_type
297fr30_elf_i32_reloc (abfd, reloc_entry, symbol, data,
298 input_section, output_bfd, error_message)
299 bfd * abfd;
300 arelent * reloc_entry;
301 asymbol * symbol;
302 PTR data;
303 asection * input_section;
304 bfd * output_bfd;
5f771d47 305 char ** error_message ATTRIBUTE_UNUSED;
252b5132
RH		 306{
307 bfd_vma relocation;
308
309 /* This part is from bfd_elf_generic_reloc. */
310 if (output_bfd != (bfd *) NULL
311 && (symbol->flags & BSF_SECTION_SYM) == 0
312 && (! reloc_entry->howto->partial_inplace
313 || reloc_entry->addend == 0))
314 {
315 reloc_entry->address += input_section->output_offset;
316 return bfd_reloc_ok;
317 }
318
319 if (output_bfd != NULL)
320 /* FIXME: See bfd_perform_relocation. Is this right? */
321 return bfd_reloc_ok;
322
323 relocation =
324 symbol->value
325 + symbol->section->output_section->vma
326 + symbol->section->output_offset
327 + reloc_entry->addend;
328
23ccc829 329 bfd_put_32 (abfd, relocation, (char *) data + reloc_entry->address + 2);
252b5132
RH		 330
331 return bfd_reloc_ok;
332}
333\f
334/* Map BFD reloc types to FR30 ELF reloc types. */
335
336struct fr30_reloc_map
337{
338 bfd_reloc_code_real_type bfd_reloc_val;
339 unsigned int fr30_reloc_val;
340};
341
342static const struct fr30_reloc_map fr30_reloc_map [] =
343{
344 { BFD_RELOC_NONE, R_FR30_NONE },
345 { BFD_RELOC_8, R_FR30_8 },
346 { BFD_RELOC_FR30_20, R_FR30_20 },
347 { BFD_RELOC_32, R_FR30_32 },
348 { BFD_RELOC_FR30_48, R_FR30_48 },
349 { BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 },
350 { BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 },
351 { BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 },
352 { BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 },
353 { BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL },
354 { BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL },
355 { BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT },
356 { BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY },
357};
358
359static reloc_howto_type *
360fr30_reloc_type_lookup (abfd, code)
5f771d47 361 bfd * abfd ATTRIBUTE_UNUSED;
252b5132
RH		 362 bfd_reloc_code_real_type code;
363{
364 unsigned int i;
365
366 for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]);
367 --i;)
368 if (fr30_reloc_map [i].bfd_reloc_val == code)
369 return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val];
6609fa74 370
252b5132
RH		 371 return NULL;
372}
373
374/* Set the howto pointer for an FR30 ELF reloc. */
375
376static void
377fr30_info_to_howto_rela (abfd, cache_ptr, dst)
5f771d47 378 bfd * abfd ATTRIBUTE_UNUSED;
252b5132
RH		 379 arelent * cache_ptr;
380 Elf32_Internal_Rela * dst;
381{
382 unsigned int r_type;
383
384 r_type = ELF32_R_TYPE (dst->r_info);
385 BFD_ASSERT (r_type < (unsigned int) R_FR30_max);
386 cache_ptr->howto = & fr30_elf_howto_table [r_type];
387}
388\f
389/* Perform a single relocation. By default we use the standard BFD
390 routines, but a few relocs, we have to do them ourselves. */
391
392static bfd_reloc_status_type
393fr30_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation)
394 reloc_howto_type * howto;
395 bfd * input_bfd;
396 asection * input_section;
397 bfd_byte * contents;
398 Elf_Internal_Rela * rel;
399 bfd_vma relocation;
400{
401 bfd_reloc_status_type r = bfd_reloc_ok;
402 bfd_vma x;
403 bfd_signed_vma srel;
6609fa74 404
252b5132
RH		 405 switch (howto->type)
406 {
407 case R_FR30_20:
408 contents += rel->r_offset;
409 relocation += rel->r_addend;
410
411 if (relocation > ((1 << 20) - 1))
412 return bfd_reloc_overflow;
6609fa74 413
252b5132
RH		 414 x = bfd_get_32 (input_bfd, contents);
415 x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
416 bfd_put_32 (input_bfd, x, contents);
417 break;
6609fa74 418
252b5132
RH		 419 case R_FR30_48:
420 contents += rel->r_offset + 2;
421 relocation += rel->r_addend;
422 bfd_put_32 (input_bfd, relocation, contents);
423 break;
424
425 case R_FR30_9_PCREL:
426 contents += rel->r_offset + 1;
427 srel = (bfd_signed_vma) relocation;
428 srel += rel->r_addend;
429 srel -= rel->r_offset;
6609fa74 430 srel -= 2; /* Branch instructions add 2 to the PC... */
252b5132
RH		 431 srel -= (input_section->output_section->vma +
432 input_section->output_offset);
6609fa74 433
252b5132
RH		 434 if (srel & 1)
435 return bfd_reloc_outofrange;
436 if (srel > ((1 << 8) - 1) || (srel < - (1 << 8)))
437 return bfd_reloc_overflow;
438
439 bfd_put_8 (input_bfd, srel >> 1, contents);
440 break;
441
442 case R_FR30_12_PCREL:
443 contents += rel->r_offset;
444 srel = (bfd_signed_vma) relocation;
445 srel += rel->r_addend;
446 srel -= rel->r_offset;
6609fa74 447 srel -= 2; /* Branch instructions add 2 to the PC... */
252b5132
RH		 448 srel -= (input_section->output_section->vma +
449 input_section->output_offset);
6609fa74 450
252b5132
RH		 451 if (srel & 1)
452 return bfd_reloc_outofrange;
453 if (srel > ((1 << 11) - 1) || (srel < - (1 << 11)))
454 return bfd_reloc_overflow;
6609fa74 455
252b5132
RH		 456 x = bfd_get_16 (input_bfd, contents);
457 x = (x & 0xf800) | ((srel >> 1) & 0x7ff);
458 bfd_put_16 (input_bfd, x, contents);
459 break;
460
461 default:
462 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
463 contents, rel->r_offset,
464 relocation, rel->r_addend);
465 }
466
467 return r;
468}
252b5132
RH		 469\f
470/* Relocate an FR30 ELF section.
471 There is some attempt to make this function usable for many architectures,
472 both USE_REL and USE_RELA ['twould be nice if such a critter existed],
473 if only to serve as a learning tool.
474
475 The RELOCATE_SECTION function is called by the new ELF backend linker
476 to handle the relocations for a section.
477
478 The relocs are always passed as Rela structures; if the section
479 actually uses Rel structures, the r_addend field will always be
480 zero.
481
482 This function is responsible for adjusting the section contents as
483 necessary, and (if using Rela relocs and generating a relocateable
484 output file) adjusting the reloc addend as necessary.
485
486 This function does not have to worry about setting the reloc
487 address or the reloc symbol index.
488
489 LOCAL_SYMS is a pointer to the swapped in local symbols.
490
491 LOCAL_SECTIONS is an array giving the section in the input file
492 corresponding to the st_shndx field of each local symbol.
493
494 The global hash table entry for the global symbols can be found
495 via elf_sym_hashes (input_bfd).
496
497 When generating relocateable output, this function must handle
498 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
499 going to be the section symbol corresponding to the output
500 section, which means that the addend must be adjusted
501 accordingly. */
502
503static boolean
504fr30_elf_relocate_section (output_bfd, info, input_bfd, input_section,
505 contents, relocs, local_syms, local_sections)
f8df10f4 506 bfd * output_bfd;
252b5132
RH		 507 struct bfd_link_info * info;
508 bfd * input_bfd;
509 asection * input_section;
510 bfd_byte * contents;
511 Elf_Internal_Rela * relocs;
512 Elf_Internal_Sym * local_syms;
513 asection ** local_sections;
514{
515 Elf_Internal_Shdr * symtab_hdr;
516 struct elf_link_hash_entry ** sym_hashes;
517 Elf_Internal_Rela * rel;
518 Elf_Internal_Rela * relend;
519
b491616a
AM		 520 if (info->relocateable)
521 return true;
522
252b5132
RH		 523 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
524 sym_hashes = elf_sym_hashes (input_bfd);
525 relend = relocs + input_section->reloc_count;
526
527 for (rel = relocs; rel < relend; rel ++)
528 {
529 reloc_howto_type * howto;
530 unsigned long r_symndx;
531 Elf_Internal_Sym * sym;
532 asection * sec;
533 struct elf_link_hash_entry * h;
534 bfd_vma relocation;
535 bfd_reloc_status_type r;
536 const char * name = NULL;
537 int r_type;
6609fa74 538
252b5132 539 r_type = ELF32_R_TYPE (rel->r_info);
6609fa74 540
252b5132
RH		 541 if ( r_type == R_FR30_GNU_VTINHERIT
542 || r_type == R_FR30_GNU_VTENTRY)
543 continue;
6609fa74 544
252b5132
RH		 545 r_symndx = ELF32_R_SYM (rel->r_info);
546
252b5132
RH		 547 howto = fr30_elf_howto_table + ELF32_R_TYPE (rel->r_info);
548 h = NULL;
549 sym = NULL;
550 sec = NULL;
6609fa74 551
252b5132
RH		 552 if (r_symndx < symtab_hdr->sh_info)
553 {
554 sym = local_syms + r_symndx;
555 sec = local_sections [r_symndx];
f8df10f4 556 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
6609fa74 557
252b5132
RH		 558 name = bfd_elf_string_from_elf_section
559 (input_bfd, symtab_hdr->sh_link, sym->st_name);
560 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
561#if 0
562 fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
563 sec->name, name, sym->st_name,
564 sec->output_section->vma, sec->output_offset,
565 sym->st_value, rel->r_addend);
566#endif
567 }
568 else
569 {
570 h = sym_hashes [r_symndx - symtab_hdr->sh_info];
6609fa74 571
252b5132
RH		 572 while (h->root.type == bfd_link_hash_indirect
573 || h->root.type == bfd_link_hash_warning)
574 h = (struct elf_link_hash_entry *) h->root.u.i.link;
575
576 name = h->root.root.string;
6609fa74 577
252b5132
RH		 578 if (h->root.type == bfd_link_hash_defined
579 || h->root.type == bfd_link_hash_defweak)
580 {
581 sec = h->root.u.def.section;
582 relocation = (h->root.u.def.value
583 + sec->output_section->vma
584 + sec->output_offset);
585#if 0
586 fprintf (stderr,
587 "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n",
588 sec->name, name, h->root.u.def.value,
589 sec->output_section->vma, sec->output_offset, relocation);
590#endif
591 }
592 else if (h->root.type == bfd_link_hash_undefweak)
593 {
594#if 0
595 fprintf (stderr, "undefined: sec: %s, name: %s\n",
596 sec->name, name);
597#endif
598 relocation = 0;
599 }
600 else
601 {
602 if (! ((*info->callbacks->undefined_symbol)
603 (info, h->root.root.string, input_bfd,
5cc7c785 604 input_section, rel->r_offset, true)))
252b5132
RH		 605 return false;
606#if 0
607 fprintf (stderr, "unknown: name: %s\n", name);
608#endif
609 relocation = 0;
610 }
611 }
6609fa74 612
252b5132
RH		 613 r = fr30_final_link_relocate (howto, input_bfd, input_section,
614 contents, rel, relocation);
615
616 if (r != bfd_reloc_ok)
617 {
618 const char * msg = (const char *) NULL;
619
620 switch (r)
621 {
622 case bfd_reloc_overflow:
623 r = info->callbacks->reloc_overflow
624 (info, name, howto->name, (bfd_vma) 0,
625 input_bfd, input_section, rel->r_offset);
626 break;
6609fa74 627
252b5132
RH		 628 case bfd_reloc_undefined:
629 r = info->callbacks->undefined_symbol
5cc7c785
L		 630 (info, name, input_bfd, input_section, rel->r_offset,
631 true);
252b5132 632 break;
6609fa74 633
252b5132
RH		 634 case bfd_reloc_outofrange:
635 msg = _("internal error: out of range error");
636 break;
637
638 case bfd_reloc_notsupported:
639 msg = _("internal error: unsupported relocation error");
640 break;
641
642 case bfd_reloc_dangerous:
643 msg = _("internal error: dangerous relocation");
644 break;
645
646 default:
647 msg = _("internal error: unknown error");
648 break;
649 }
650
651 if (msg)
652 r = info->callbacks->warning
653 (info, msg, name, input_bfd, input_section, rel->r_offset);
654
655 if (! r)
656 return false;
657 }
658 }
659
660 return true;
661}
662\f
663/* Return the section that should be marked against GC for a given
664 relocation. */
665
666static asection *
667fr30_elf_gc_mark_hook (abfd, info, rel, h, sym)
668 bfd * abfd;
5f771d47 669 struct bfd_link_info * info ATTRIBUTE_UNUSED;
252b5132
RH		 670 Elf_Internal_Rela * rel;
671 struct elf_link_hash_entry * h;
672 Elf_Internal_Sym * sym;
673{
674 if (h != NULL)
675 {
676 switch (ELF32_R_TYPE (rel->r_info))
677 {
678 case R_FR30_GNU_VTINHERIT:
679 case R_FR30_GNU_VTENTRY:
680 break;
681
682 default:
683 switch (h->root.type)
684 {
685 case bfd_link_hash_defined:
686 case bfd_link_hash_defweak:
687 return h->root.u.def.section;
688
689 case bfd_link_hash_common:
690 return h->root.u.c.p->section;
e049a0de
ILT		 691
692 default:
693 break;
252b5132
RH		 694 }
695 }
696 }
697 else
698 {
9ad5cbcf 699 return bfd_section_from_elf_index (abfd, sym->st_shndx);
252b5132
RH		 700 }
701
702 return NULL;
703}
704
705/* Update the got entry reference counts for the section being removed. */
706
707static boolean
708fr30_elf_gc_sweep_hook (abfd, info, sec, relocs)
5f771d47
ILT		 709 bfd * abfd ATTRIBUTE_UNUSED;
710 struct bfd_link_info * info ATTRIBUTE_UNUSED;
711 asection * sec ATTRIBUTE_UNUSED;
712 const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED;
252b5132
RH		 713{
714 return true;
715}
716
717/* Look through the relocs for a section during the first phase.
718 Since we don't do .gots or .plts, we just need to consider the
719 virtual table relocs for gc. */
6609fa74 720
252b5132
RH		 721static boolean
722fr30_elf_check_relocs (abfd, info, sec, relocs)
723 bfd *abfd;
724 struct bfd_link_info *info;
725 asection *sec;
726 const Elf_Internal_Rela *relocs;
727{
728 Elf_Internal_Shdr *symtab_hdr;
729 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
730 const Elf_Internal_Rela *rel;
731 const Elf_Internal_Rela *rel_end;
6609fa74 732
252b5132
RH		 733 if (info->relocateable)
734 return true;
6609fa74 735
252b5132
RH		 736 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
737 sym_hashes = elf_sym_hashes (abfd);
6609fa74 738 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
252b5132
RH		 739 if (!elf_bad_symtab (abfd))
740 sym_hashes_end -= symtab_hdr->sh_info;
6609fa74 741
252b5132
RH		 742 rel_end = relocs + sec->reloc_count;
743 for (rel = relocs; rel < rel_end; rel++)
744 {
745 struct elf_link_hash_entry *h;
746 unsigned long r_symndx;
6609fa74 747
252b5132
RH		 748 r_symndx = ELF32_R_SYM (rel->r_info);
749 if (r_symndx < symtab_hdr->sh_info)
750 h = NULL;
751 else
752 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6609fa74 753
252b5132
RH		 754 switch (ELF32_R_TYPE (rel->r_info))
755 {
756 /* This relocation describes the C++ object vtable hierarchy.
757 Reconstruct it for later use during GC. */
758 case R_FR30_GNU_VTINHERIT:
759 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
760 return false;
761 break;
6609fa74 762
252b5132
RH		 763 /* This relocation describes which C++ vtable entries are actually
764 used. Record for later use during GC. */
765 case R_FR30_GNU_VTENTRY:
766 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
767 return false;
768 break;
769 }
770 }
6609fa74 771
252b5132
RH		 772 return true;
773}
774\f
775#define ELF_ARCH bfd_arch_fr30
aa4f99bb
AO		 776#define ELF_MACHINE_CODE EM_FR30
777#define ELF_MACHINE_ALT1 EM_CYGNUS_FR30
252b5132
RH		 778#define ELF_MAXPAGESIZE 0x1000
779
780#define TARGET_BIG_SYM bfd_elf32_fr30_vec
781#define TARGET_BIG_NAME "elf32-fr30"
782
783#define elf_info_to_howto_rel NULL
784#define elf_info_to_howto fr30_info_to_howto_rela
785#define elf_backend_relocate_section fr30_elf_relocate_section
786#define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook
787#define elf_backend_gc_sweep_hook fr30_elf_gc_sweep_hook
788#define elf_backend_check_relocs fr30_elf_check_relocs
789
790#define elf_backend_can_gc_sections 1
b491616a 791#define elf_backend_rela_normal 1
252b5132
RH		 792
793#define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup
794
795#include "elf32-target.h"
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