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2002-04-04 Michael Snyder <msnyder@redhat.com>
[deliverable/binutils-gdb.git] / bfd / elf32-cris.c
CommitLineData
06c15ad7 1/* CRIS-specific support for 32-bit ELF.
e5094212 2 Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
06c15ad7
HPN		 3 Contributed by Axis Communications AB.
4 Written by Hans-Peter Nilsson, based on elf32-fr30.c
915e5146 5 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
06c15ad7
HPN		 6
7This file is part of BFD, the Binary File Descriptor library.
8
9This program is free software; you can redistribute it and/or modify
10it under the terms of the GNU General Public License as published by
11the Free Software Foundation; either version 2 of the License, or
12(at your option) any later version.
13
14This program is distributed in the hope that it will be useful,
15but WITHOUT ANY WARRANTY; without even the implied warranty of
16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17GNU General Public License for more details.
18
19You should have received a copy of the GNU General Public License
20along with this program; if not, write to the Free Software
21Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22
23#include "bfd.h"
24#include "sysdep.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
27#include "elf/cris.h"
28
29/* Forward declarations. */
30static reloc_howto_type * cris_reloc_type_lookup
31 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
32
a7c10850 33static void cris_info_to_howto_rela
06c15ad7
HPN		 34 PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
35
72209a1f
HPN		 36static boolean cris_elf_grok_prstatus
37 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
38
39static boolean cris_elf_grok_psinfo
40 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
41
a7c10850 42static boolean cris_elf_relocate_section
06c15ad7
HPN		 43 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
44 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
45
46static bfd_reloc_status_type cris_final_link_relocate
47 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
48 Elf_Internal_Rela *, bfd_vma));
49
50static boolean cris_elf_gc_sweep_hook
51 PARAMS ((bfd *, struct bfd_link_info *, asection *,
52 const Elf_Internal_Rela *));
53
54static asection * cris_elf_gc_mark_hook
55 PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
56 struct elf_link_hash_entry *, Elf_Internal_Sym *));
57
4da81684
HPN		 58static boolean cris_elf_object_p PARAMS ((bfd *));
59
60static void cris_elf_final_write_processing PARAMS ((bfd *, boolean));
61
62static boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
63
64static boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
65
915e5146 66struct elf_cris_link_hash_entry;
4d96d128
HPN		 67static boolean elf_cris_discard_excess_dso_dynamics
68 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
69static boolean elf_cris_discard_excess_program_dynamics
915e5146
HPN		 70 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
71static boolean elf_cris_adjust_gotplt_to_got
72 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
73static boolean elf_cris_try_fold_plt_to_got
74 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
75static struct bfd_hash_entry *elf_cris_link_hash_newfunc
76 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
77static struct bfd_link_hash_table *elf_cris_link_hash_table_create
78 PARAMS ((bfd *));
79static boolean elf_cris_adjust_dynamic_symbol
80 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
99c79b2e
AJ		 81static boolean cris_elf_check_relocs
82 PARAMS ((bfd *, struct bfd_link_info *, asection *,
83 const Elf_Internal_Rela *));
84
915e5146
HPN		 85static boolean elf_cris_size_dynamic_sections
86 PARAMS ((bfd *, struct bfd_link_info *));
87static boolean elf_cris_finish_dynamic_symbol
88 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
89 Elf_Internal_Sym *));
90static boolean elf_cris_finish_dynamic_sections
91 PARAMS ((bfd *, struct bfd_link_info *));
92static void elf_cris_hide_symbol
e5094212 93 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
99e4ae17 94static enum elf_reloc_type_class elf_cris_reloc_type_class
f51e552e 95 PARAMS ((const Elf_Internal_Rela *));
915e5146 96
06c15ad7
HPN		 97static reloc_howto_type cris_elf_howto_table [] =
98{
99 /* This reloc does nothing. */
100 HOWTO (R_CRIS_NONE, /* type */
101 0, /* rightshift */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
103 32, /* bitsize */
104 false, /* pc_relative */
105 0, /* bitpos */
106 complain_overflow_bitfield, /* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_CRIS_NONE", /* name */
109 false, /* partial_inplace */
110 0, /* src_mask */
111 0, /* dst_mask */
112 false), /* pcrel_offset */
113
114 /* An 8 bit absolute relocation. */
115 HOWTO (R_CRIS_8, /* type */
116 0, /* rightshift */
117 0, /* size (0 = byte, 1 = short, 2 = long) */
118 8, /* bitsize */
119 false, /* pc_relative */
120 0, /* bitpos */
121 complain_overflow_bitfield, /* complain_on_overflow */
122 bfd_elf_generic_reloc, /* special_function */
123 "R_CRIS_8", /* name */
124 false, /* partial_inplace */
125 0x0000, /* src_mask */
126 0x00ff, /* dst_mask */
127 false), /* pcrel_offset */
128
129 /* A 16 bit absolute relocation. */
130 HOWTO (R_CRIS_16, /* type */
131 0, /* rightshift */
132 1, /* size (0 = byte, 1 = short, 2 = long) */
133 16, /* bitsize */
134 false, /* pc_relative */
135 0, /* bitpos */
136 complain_overflow_bitfield, /* complain_on_overflow */
137 bfd_elf_generic_reloc, /* special_function */
138 "R_CRIS_16", /* name */
139 false, /* partial_inplace */
140 0x00000000, /* src_mask */
141 0x0000ffff, /* dst_mask */
142 false), /* pcrel_offset */
143
144 /* A 32 bit absolute relocation. */
145 HOWTO (R_CRIS_32, /* type */
146 0, /* rightshift */
147 2, /* size (0 = byte, 1 = short, 2 = long) */
148 32, /* bitsize */
149 false, /* pc_relative */
150 0, /* bitpos */
151 complain_overflow_bitfield, /* complain_on_overflow */
152 bfd_elf_generic_reloc, /* special_function */
153 "R_CRIS_32", /* name */
154 false, /* partial_inplace */
155 0x00000000, /* src_mask */
156 0xffffffff, /* dst_mask */
157 false), /* pcrel_offset */
158
915e5146 159 /* An 8 bit PC-relative relocation. */
06c15ad7
HPN		 160 HOWTO (R_CRIS_8_PCREL, /* type */
161 0, /* rightshift */
162 0, /* size (0 = byte, 1 = short, 2 = long) */
163 8, /* bitsize */
164 true, /* pc_relative */
165 0, /* bitpos */
166 complain_overflow_bitfield, /* complain_on_overflow */
167 bfd_elf_generic_reloc, /* special_function */
168 "R_CRIS_8_PCREL", /* name */
169 false, /* partial_inplace */
170 0x0000, /* src_mask */
171 0x00ff, /* dst_mask */
915e5146 172 true), /* pcrel_offset */
06c15ad7 173
915e5146 174 /* A 16 bit PC-relative relocation. */
06c15ad7
HPN		 175 HOWTO (R_CRIS_16_PCREL, /* type */
176 0, /* rightshift */
177 1, /* size (0 = byte, 1 = short, 2 = long) */
178 16, /* bitsize */
179 true, /* pc_relative */
180 0, /* bitpos */
181 complain_overflow_bitfield, /* complain_on_overflow */
182 bfd_elf_generic_reloc, /* special_function */
183 "R_CRIS_16", /* name */
184 false, /* partial_inplace */
185 0x00000000, /* src_mask */
186 0x0000ffff, /* dst_mask */
915e5146 187 true), /* pcrel_offset */
06c15ad7 188
915e5146 189 /* A 32 bit PC-relative relocation. */
06c15ad7
HPN		 190 HOWTO (R_CRIS_32_PCREL, /* type */
191 0, /* rightshift */
192 2, /* size (0 = byte, 1 = short, 2 = long) */
193 32, /* bitsize */
194 true, /* pc_relative */
195 0, /* bitpos */
196 complain_overflow_bitfield, /* complain_on_overflow */
197 bfd_elf_generic_reloc, /* special_function */
198 "R_CRIS_32", /* name */
199 false, /* partial_inplace */
200 0x00000000, /* src_mask */
201 0xffffffff, /* dst_mask */
915e5146 202 true), /* pcrel_offset */
06c15ad7 203
915e5146
HPN		 204 /* GNU extension to record C++ vtable hierarchy. */
205 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
06c15ad7
HPN		 206 0, /* rightshift */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
208 0, /* bitsize */
209 false, /* pc_relative */
210 0, /* bitpos */
211 complain_overflow_dont, /* complain_on_overflow */
212 NULL, /* special_function */
213 "R_CRIS_GNU_VTINHERIT", /* name */
214 false, /* partial_inplace */
215 0, /* src_mask */
216 0, /* dst_mask */
217 false), /* pcrel_offset */
218
915e5146
HPN		 219 /* GNU extension to record C++ vtable member usage. */
220 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
06c15ad7
HPN		 221 0, /* rightshift */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
223 0, /* bitsize */
224 false, /* pc_relative */
225 0, /* bitpos */
226 complain_overflow_dont, /* complain_on_overflow */
227 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
228 "R_CRIS_GNU_VTENTRY", /* name */
229 false, /* partial_inplace */
230 0, /* src_mask */
231 0, /* dst_mask */
915e5146
HPN		 232 false), /* pcrel_offset */
233
234 /* This is used only by the dynamic linker. The symbol should exist
235 both in the object being run and in some shared library. The
236 dynamic linker copies the data addressed by the symbol from the
237 shared library into the object, because the object being
238 run has to have the data at some particular address. */
239 HOWTO (R_CRIS_COPY, /* type */
240 0, /* rightshift */
241 2, /* size (0 = byte, 1 = short, 2 = long) */
242 32, /* bitsize */
243 false, /* pc_relative */
244 0, /* bitpos */
245 complain_overflow_bitfield, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_CRIS_COPY", /* name */
248 false, /* partial_inplace */
249 0, /* src_mask */
250 0, /* dst_mask */
251 false), /* pcrel_offset */
252
253 /* Like R_CRIS_32, but used when setting global offset table entries. */
254 HOWTO (R_CRIS_GLOB_DAT, /* type */
255 0, /* rightshift */
256 2, /* size (0 = byte, 1 = short, 2 = long) */
257 32, /* bitsize */
258 false, /* pc_relative */
259 0, /* bitpos */
260 complain_overflow_bitfield, /* complain_on_overflow */
261 bfd_elf_generic_reloc, /* special_function */
262 "R_CRIS_GLOB_DAT", /* name */
263 false, /* partial_inplace */
264 0, /* src_mask */
265 0xffffffff, /* dst_mask */
266 false), /* pcrel_offset */
267
268 /* Marks a procedure linkage table entry for a symbol. */
269 HOWTO (R_CRIS_JUMP_SLOT, /* type */
270 0, /* rightshift */
271 2, /* size (0 = byte, 1 = short, 2 = long) */
272 32, /* bitsize */
273 false, /* pc_relative */
274 0, /* bitpos */
275 complain_overflow_bitfield, /* complain_on_overflow */
276 bfd_elf_generic_reloc, /* special_function */
277 "R_CRIS_JUMP_SLOT", /* name */
278 false, /* partial_inplace */
279 0, /* src_mask */
280 0, /* dst_mask */
281 false), /* pcrel_offset */
282
283 /* Used only by the dynamic linker. When the object is run, this
284 longword is set to the load address of the object, plus the
285 addend. */
286 HOWTO (R_CRIS_RELATIVE, /* type */
287 0, /* rightshift */
288 2, /* size (0 = byte, 1 = short, 2 = long) */
289 32, /* bitsize */
290 false, /* pc_relative */
291 0, /* bitpos */
292 complain_overflow_bitfield, /* complain_on_overflow */
293 bfd_elf_generic_reloc, /* special_function */
294 "R_CRIS_RELATIVE", /* name */
295 false, /* partial_inplace */
296 0, /* src_mask */
297 0xffffffff, /* dst_mask */
298 false), /* pcrel_offset */
299
300 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
301 HOWTO (R_CRIS_16_GOT, /* type */
302 0, /* rightshift */
303 1, /* size (0 = byte, 1 = short, 2 = long) */
304 16, /* bitsize */
305 false, /* pc_relative */
306 0, /* bitpos */
307 complain_overflow_bitfield, /* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_CRIS_16_GOT", /* name */
310 false, /* partial_inplace */
311 0, /* src_mask */
312 0xffff, /* dst_mask */
313 false), /* pcrel_offset */
314
315 HOWTO (R_CRIS_32_GOT, /* type */
316 0, /* rightshift */
317 2, /* size (0 = byte, 1 = short, 2 = long) */
318 32, /* bitsize */
319 false, /* pc_relative */
320 0, /* bitpos */
321 complain_overflow_bitfield, /* complain_on_overflow */
322 bfd_elf_generic_reloc, /* special_function */
323 "R_CRIS_32_GOT", /* name */
324 false, /* partial_inplace */
325 0, /* src_mask */
326 0xffffffff, /* dst_mask */
327 false), /* pcrel_offset */
328
329 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
330 the GOT table for the symbol. */
331 HOWTO (R_CRIS_16_GOTPLT, /* type */
332 0, /* rightshift */
333 1, /* size (0 = byte, 1 = short, 2 = long) */
334 16, /* bitsize */
335 false, /* pc_relative */
336 0, /* bitpos */
337 complain_overflow_bitfield, /* complain_on_overflow */
338 bfd_elf_generic_reloc, /* special_function */
339 "R_CRIS_16_GOTPLT", /* name */
340 false, /* partial_inplace */
341 0, /* src_mask */
342 0xffff, /* dst_mask */
343 false), /* pcrel_offset */
344
345 HOWTO (R_CRIS_32_GOTPLT, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 32, /* bitsize */
349 false, /* pc_relative */
350 0, /* bitpos */
351 complain_overflow_bitfield, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_CRIS_32_GOTPLT", /* name */
354 false, /* partial_inplace */
355 0, /* src_mask */
356 0xffffffff, /* dst_mask */
357 false), /* pcrel_offset */
358
359 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
360 be necessary. */
361 HOWTO (R_CRIS_32_GOTREL, /* type */
362 0, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 32, /* bitsize */
365 false, /* pc_relative */
366 0, /* bitpos */
367 complain_overflow_bitfield, /* complain_on_overflow */
368 bfd_elf_generic_reloc, /* special_function */
369 "R_CRIS_32_GOTREL", /* name */
370 false, /* partial_inplace */
371 0, /* src_mask */
372 0xffffffff, /* dst_mask */
373 false), /* pcrel_offset */
374
375 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
376 to create PLT entry for symbol. */
377 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 32, /* bitsize */
381 false, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_bitfield, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_CRIS_32_PLT_GOTREL", /* name */
386 false, /* partial_inplace */
387 0, /* src_mask */
388 0xffffffff, /* dst_mask */
389 false), /* pcrel_offset */
390
391 /* A 32-bit offset from PC (location after the relocation) + addend to
392 entry for this symbol in PLT and request to create PLT entry for
393 symbol. */
394 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 32, /* bitsize */
398 true, /* pc_relative */
399 0, /* bitpos */
400 complain_overflow_bitfield, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_CRIS_32_PLT_PCREL", /* name */
403 false, /* partial_inplace */
404 0, /* src_mask */
405 0xffffffff, /* dst_mask */
406 true) /* pcrel_offset */
06c15ad7
HPN		 407};
408\f
409/* Map BFD reloc types to CRIS ELF reloc types. */
410
411struct cris_reloc_map
412{
413 bfd_reloc_code_real_type bfd_reloc_val;
414 unsigned int cris_reloc_val;
415};
416
417static const struct cris_reloc_map cris_reloc_map [] =
418{
419 { BFD_RELOC_NONE, R_CRIS_NONE },
420 { BFD_RELOC_8, R_CRIS_8 },
421 { BFD_RELOC_16, R_CRIS_16 },
422 { BFD_RELOC_32, R_CRIS_32 },
423 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
424 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
425 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
426 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
915e5146
HPN		 427 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
428 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
429 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
430 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
431 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
432 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
433 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
434 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
435 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
436 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
437 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
438 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL }
06c15ad7
HPN		 439};
440
441static reloc_howto_type *
442cris_reloc_type_lookup (abfd, code)
443 bfd * abfd ATTRIBUTE_UNUSED;
444 bfd_reloc_code_real_type code;
445{
908d94bf 446 unsigned int i;
06c15ad7 447
908d94bf 448 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
06c15ad7
HPN		 449 if (cris_reloc_map [i].bfd_reloc_val == code)
450 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
a7c10850 451
06c15ad7
HPN		 452 return NULL;
453}
454
455/* Set the howto pointer for an CRIS ELF reloc. */
456
457static void
458cris_info_to_howto_rela (abfd, cache_ptr, dst)
459 bfd * abfd ATTRIBUTE_UNUSED;
460 arelent * cache_ptr;
461 Elf32_Internal_Rela * dst;
462{
463 unsigned int r_type;
464
465 r_type = ELF32_R_TYPE (dst->r_info);
466 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
467 cache_ptr->howto = & cris_elf_howto_table [r_type];
468}
469\f
72209a1f
HPN		 470/* Support for core dump NOTE sections. */
471
472static boolean
473cris_elf_grok_prstatus (abfd, note)
474 bfd *abfd;
475 Elf_Internal_Note *note;
476{
477 int offset;
478 size_t raw_size;
479
480 switch (note->descsz)
481 {
482 default:
483 return false;
484
bc0d28ee 485 case 214: /* Linux/CRIS */
72209a1f
HPN		 486 /* pr_cursig */
487 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
488
489 /* pr_pid */
490 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
491
492 /* pr_reg */
493 offset = 70;
bc0d28ee 494 raw_size = 140;
72209a1f
HPN		 495
496 break;
497 }
498
499 /* Make a ".reg/999" section. */
500 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
501 raw_size, note->descpos + offset);
502}
503
504static boolean
505cris_elf_grok_psinfo (abfd, note)
506 bfd *abfd;
507 Elf_Internal_Note *note;
508{
509 switch (note->descsz)
510 {
511 default:
512 return false;
513
514 case 124: /* Linux/CRIS elf_prpsinfo */
515 elf_tdata (abfd)->core_program
516 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
517 elf_tdata (abfd)->core_command
518 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
519 }
520
521 /* Note that for some reason, a spurious space is tacked
522 onto the end of the args in some (at least one anyway)
523 implementations, so strip it off if it exists. */
524
525 {
526 char *command = elf_tdata (abfd)->core_command;
527 int n = strlen (command);
528
529 if (0 < n && command[n - 1] == ' ')
530 command[n - 1] = '\0';
531 }
532
533 return true;
534}
535\f
915e5146
HPN		 536/* The name of the dynamic interpreter. This is put in the .interp
537 section. */
538
539#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
540
541/* The size in bytes of an entry in the procedure linkage table. */
542
543#define PLT_ENTRY_SIZE 20
544
545/* The first entry in an absolute procedure linkage table looks like this. */
546
547static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
548{
549 0xfc, 0xe1,
550 0x7e, 0x7e, /* push mof. */
551 0x7f, 0x0d, /* (dip [pc+]) */
552 0, 0, 0, 0, /* Replaced with address of .got + 4. */
553 0x30, 0x7a, /* move [...],mof */
554 0x7f, 0x0d, /* (dip [pc+]) */
555 0, 0, 0, 0, /* Replaced with address of .got + 8. */
556 0x30, 0x09, /* jump [...] */
557};
558
559/* Subsequent entries in an absolute procedure linkage table look like
560 this. */
561
562static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
563{
564 0x7f, 0x0d, /* (dip [pc+]) */
565 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
566 0x30, 0x09, /* jump [...] */
567 0x3f, 0x7e, /* move [pc+],mof */
568 0, 0, 0, 0, /* Replaced with offset into relocation table. */
569 0x2f, 0xfe, /* add.d [pc+],pc */
570 0xec, 0xff,
571 0xff, 0xff /* Replaced with offset to start of .plt. */
572};
573
574/* The first entry in a PIC procedure linkage table looks like this. */
575
576static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
577{
578 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
579 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
580 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
581 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
582};
583
584/* Subsequent entries in a PIC procedure linkage table look like this. */
585
586static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
587{
588 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
589 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
590 0x30, 0x09, /* jump [...] */
591 0x3f, 0x7e, /* move [pc+],mof */
592 0, 0, 0, 0, /* Replaced with offset into relocation table. */
593 0x2f, 0xfe, /* add.d [pc+],pc */
594 0xec, 0xff, /* Replaced with offset to start of .plt. */
595 0xff, 0xff
596};
597\f
598/* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
599 (and most other PIC/shlib stuff). Check that we don't drift away
600 without reason.
601
602 The CRIS linker, like the m68k and i386 linkers (and probably the rest
603 too) needs to keep track of the number of relocs that it decides to
604 copy in check_relocs for each symbol. This is so that it can discard
605 PC relative relocs if it doesn't need them when linking with
606 -Bsymbolic. We store the information in a field extending the regular
607 ELF linker hash table. */
608
609/* This structure keeps track of the number of PC relative relocs we have
610 copied for a given symbol. */
611
612struct elf_cris_pcrel_relocs_copied
613{
614 /* Next section. */
615 struct elf_cris_pcrel_relocs_copied *next;
616 /* A section in dynobj. */
617 asection *section;
618 /* Number of relocs copied in this section. */
619 bfd_size_type count;
620};
621
622/* CRIS ELF linker hash entry. */
623
624struct elf_cris_link_hash_entry
625{
626 struct elf_link_hash_entry root;
627
628 /* Number of PC relative relocs copied for this symbol. */
629 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
630
631 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
632 both a general GOT and a PLT-specific GOT entry for the same symbol,
633 when it is referenced both as a function and as a function pointer.
634
635 Number of GOTPLT references for a function. */
636 bfd_signed_vma gotplt_refcount;
637
638 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
639 (zero is never used as an index). FIXME: We should be able to fold
640 this with gotplt_refcount in a union, like the got and plt unions in
641 elf_link_hash_entry. */
642 bfd_size_type gotplt_offset;
643};
644
645/* CRIS ELF linker hash table. */
646
647struct elf_cris_link_hash_table
648{
649 struct elf_link_hash_table root;
650
651 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
652 since we try and avoid creating GOTPLT:s when there's already a GOT.
653 Instead, we keep and update the next available index here. */
654 bfd_size_type next_gotplt_entry;
655};
656
657/* Traverse a CRIS ELF linker hash table. */
658
659#define elf_cris_link_hash_traverse(table, func, info) \
660 (elf_link_hash_traverse \
661 (&(table)->root, \
662 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
663 (info)))
664
665/* Get the CRIS ELF linker hash table from a link_info structure. */
666
667#define elf_cris_hash_table(p) \
668 ((struct elf_cris_link_hash_table *) (p)->hash)
669
670/* Create an entry in a CRIS ELF linker hash table. */
671
672static struct bfd_hash_entry *
673elf_cris_link_hash_newfunc (entry, table, string)
674 struct bfd_hash_entry *entry;
675 struct bfd_hash_table *table;
676 const char *string;
677{
678 struct elf_cris_link_hash_entry *ret =
679 (struct elf_cris_link_hash_entry *) entry;
680
681 /* Allocate the structure if it has not already been allocated by a
682 subclass. */
683 if (ret == (struct elf_cris_link_hash_entry *) NULL)
684 ret = ((struct elf_cris_link_hash_entry *)
685 bfd_hash_allocate (table,
686 sizeof (struct elf_cris_link_hash_entry)));
687 if (ret == (struct elf_cris_link_hash_entry *) NULL)
688 return (struct bfd_hash_entry *) ret;
689
690 /* Call the allocation method of the superclass. */
691 ret = ((struct elf_cris_link_hash_entry *)
692 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
693 table, string));
694 if (ret != (struct elf_cris_link_hash_entry *) NULL)
695 {
696 ret->pcrel_relocs_copied = NULL;
697 ret->gotplt_refcount = 0;
698 ret->gotplt_offset = 0;
699 }
700
701 return (struct bfd_hash_entry *) ret;
702}
703
704/* Create a CRIS ELF linker hash table. */
705
706static struct bfd_link_hash_table *
707elf_cris_link_hash_table_create (abfd)
708 bfd *abfd;
709{
710 struct elf_cris_link_hash_table *ret;
dc810e39 711 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
915e5146 712
dc810e39 713 ret = ((struct elf_cris_link_hash_table *) bfd_alloc (abfd, amt));
915e5146
HPN		 714 if (ret == (struct elf_cris_link_hash_table *) NULL)
715 return NULL;
716
717 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
718 elf_cris_link_hash_newfunc))
719 {
720 bfd_release (abfd, ret);
721 return NULL;
722 }
723
724 /* Initialize to skip over the first three entries in the gotplt; they
725 are used for run-time symbol evaluation. */
726 ret->next_gotplt_entry = 12;
727
728 return &ret->root.root;
729}
730\f
06c15ad7 731/* Perform a single relocation. By default we use the standard BFD
915e5146 732 routines, with a few tweaks. */
06c15ad7
HPN		 733
734static bfd_reloc_status_type
735cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
736 relocation)
737 reloc_howto_type * howto;
738 bfd * input_bfd;
739 asection * input_section;
740 bfd_byte * contents;
741 Elf_Internal_Rela * rel;
742 bfd_vma relocation;
743{
915e5146
HPN		 744 bfd_reloc_status_type r;
745
746 /* PC-relative relocations are relative to the position *after*
747 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
748 not a single byte, since PC must be 16-bit-aligned. */
749 switch (ELF32_R_TYPE (rel->r_info))
750 {
751 /* Check that the 16-bit GOT relocs are positive. */
752 case R_CRIS_16_GOTPLT:
753 case R_CRIS_16_GOT:
754 if ((bfd_signed_vma) relocation < 0)
755 return bfd_reloc_overflow;
756 break;
757
758 case R_CRIS_32_PLT_PCREL:
759 case R_CRIS_32_PCREL:
760 relocation -= 2;
761 /* Fall through. */
762 case R_CRIS_8_PCREL:
763 case R_CRIS_16_PCREL:
764 relocation -= 2;
765 break;
766
767 default:
768 break;
769 }
770
771 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
06c15ad7
HPN		 772 contents, rel->r_offset,
773 relocation, rel->r_addend);
774 return r;
775}
776\f
777/* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
778 copied, for further comments. */
779
780static boolean
781cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
782 contents, relocs, local_syms, local_sections)
783 bfd * output_bfd ATTRIBUTE_UNUSED;
784 struct bfd_link_info * info;
785 bfd * input_bfd;
786 asection * input_section;
787 bfd_byte * contents;
788 Elf_Internal_Rela * relocs;
789 Elf_Internal_Sym * local_syms;
790 asection ** local_sections;
791{
915e5146 792 bfd *dynobj;
06c15ad7
HPN		 793 Elf_Internal_Shdr * symtab_hdr;
794 struct elf_link_hash_entry ** sym_hashes;
915e5146
HPN		 795 bfd_vma *local_got_offsets;
796 asection *sgot;
797 asection *splt;
798 asection *sreloc;
06c15ad7
HPN		 799 Elf_Internal_Rela * rel;
800 Elf_Internal_Rela * relend;
801
915e5146
HPN		 802 dynobj = elf_hash_table (info)->dynobj;
803 local_got_offsets = elf_local_got_offsets (input_bfd);
06c15ad7
HPN		 804 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
805 sym_hashes = elf_sym_hashes (input_bfd);
806 relend = relocs + input_section->reloc_count;
807
808 /* It seems this can happen with erroneous or unsupported input (mixing
809 a.out and elf in an archive, for example.) */
810 if (sym_hashes == NULL)
811 return false;
812
915e5146
HPN		 813 sgot = NULL;
814 splt = NULL;
815 sreloc = NULL;
816
817 if (dynobj != NULL)
818 {
819 splt = bfd_get_section_by_name (dynobj, ".plt");
820 sgot = bfd_get_section_by_name (dynobj, ".got");
821 }
822
06c15ad7
HPN		 823 for (rel = relocs; rel < relend; rel ++)
824 {
825 reloc_howto_type * howto;
826 unsigned long r_symndx;
827 Elf_Internal_Sym * sym;
828 asection * sec;
829 struct elf_link_hash_entry * h;
830 bfd_vma relocation;
831 bfd_reloc_status_type r;
dc810e39 832 const char * symname = NULL;
06c15ad7 833 int r_type;
a7c10850 834
06c15ad7 835 r_type = ELF32_R_TYPE (rel->r_info);
a7c10850 836
06c15ad7
HPN		 837 if ( r_type == R_CRIS_GNU_VTINHERIT
838 || r_type == R_CRIS_GNU_VTENTRY)
839 continue;
a7c10850 840
06c15ad7
HPN		 841 r_symndx = ELF32_R_SYM (rel->r_info);
842
843 if (info->relocateable)
844 {
845 /* This is a relocateable link. We don't have to change
846 anything, unless the reloc is against a section symbol,
847 in which case we have to adjust according to where the
848 section symbol winds up in the output section. */
849 if (r_symndx < symtab_hdr->sh_info)
850 {
851 sym = local_syms + r_symndx;
a7c10850 852
06c15ad7
HPN		 853 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
854 {
855 sec = local_sections [r_symndx];
856 rel->r_addend += sec->output_offset + sym->st_value;
857 }
858 }
859
860 continue;
861 }
862
863 /* This is a final link. */
915e5146 864 howto = cris_elf_howto_table + r_type;
06c15ad7
HPN		 865 h = NULL;
866 sym = NULL;
867 sec = NULL;
a7c10850 868
06c15ad7
HPN		 869 if (r_symndx < symtab_hdr->sh_info)
870 {
871 sym = local_syms + r_symndx;
872 sec = local_sections [r_symndx];
f8df10f4 873 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
a7c10850 874
dc810e39
AM		 875 symname = (bfd_elf_string_from_elf_section
876 (input_bfd, symtab_hdr->sh_link, sym->st_name));
877 if (symname == NULL)
878 symname = bfd_section_name (input_bfd, sec);
06c15ad7
HPN		 879 }
880 else
881 {
882 h = sym_hashes [r_symndx - symtab_hdr->sh_info];
a7c10850 883
06c15ad7
HPN		 884 while (h->root.type == bfd_link_hash_indirect
885 || h->root.type == bfd_link_hash_warning)
886 h = (struct elf_link_hash_entry *) h->root.u.i.link;
887
dc810e39 888 symname = h->root.root.string;
a7c10850 889
06c15ad7
HPN		 890 if (h->root.type == bfd_link_hash_defined
891 || h->root.type == bfd_link_hash_defweak)
892 {
893 sec = h->root.u.def.section;
915e5146
HPN		 894
895 /* Perhaps we should detect the cases that
896 sec->output_section is expected to be NULL like i386 and
897 m68k, but apparently (and according to elfxx-ia64.c) all
898 valid cases are where the symbol is defined in a shared
899 object which we link dynamically against. This includes
900 PLT relocs for which we've created a PLT entry and other
901 relocs for which we're prepared to create dynamic
902 relocations.
903
904 For now, new situations cause us to just err when
905 sec->output_offset is NULL but the object with the symbol
906 is *not* dynamically linked against. Thus this will
907 automatically remind us so we can see if there are other
908 valid cases we need to revisit. */
909 if ((sec->output_section == NULL
910 && (sec->owner->flags & DYNAMIC) != 0)
911
912 /* Here follow the cases where the relocation value must
913 be zero (or when further handling is simplified when
914 zero). I can't claim to understand the various
915 conditions and they weren't described in the files
916 where I copied them from (elf32-m68k.c and
917 elf32-i386.c), but let's mention examples of where
918 they happen. FIXME: Perhaps define and use a
919 dynamic_symbol_p function like ia64.
920
921 - When creating a shared library, we can have an
922 ordinary relocation for a symbol defined in a shared
923 library (perhaps the one we create). We then make
924 the relocation value zero, as the value seen now will
925 be added into the relocation addend in this shared
926 library, but must be handled only at dynamic-link
927 time. FIXME: Not sure this example covers the
928 h->elf_link_hash_flags test, though it's there in
929 other targets. */
930 || (info->shared
931 && ((! info->symbolic && h->dynindx != -1)
932 || (h->elf_link_hash_flags
933 & ELF_LINK_HASH_DEF_REGULAR) == 0)
934 && (input_section->flags & SEC_ALLOC) != 0
935 && (r_type == R_CRIS_8
936 || r_type == R_CRIS_16
937 || r_type == R_CRIS_32
938 || r_type == R_CRIS_8_PCREL
939 || r_type == R_CRIS_16_PCREL
940 || r_type == R_CRIS_32_PCREL)))
941 relocation = 0;
942 else if (sec->output_section != NULL)
943 relocation = (h->root.u.def.value
944 + sec->output_section->vma
945 + sec->output_offset);
946 else
947 {
8f615d07
AM		 948 (*_bfd_error_handler)
949 (_("%s: unresolvable relocation %s against symbol `%s' from %s section"),
950 bfd_archive_filename (input_bfd),
951 cris_elf_howto_table[r_type].name,
952 symname,
953 bfd_get_section_name (input_bfd, input_section));
915e5146
HPN		 954 bfd_set_error (bfd_error_bad_value);
955 return false;
956 }
06c15ad7
HPN		 957 }
958 else if (h->root.type == bfd_link_hash_undefweak)
915e5146 959 relocation = 0;
06c15ad7 960 else if (info->shared
671bae9c 961 && (!info->symbolic || info->allow_shlib_undefined)
915e5146 962 && !info->no_undefined
06c15ad7
HPN		 963 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
964 relocation = 0;
965 else
966 {
915e5146 967 if (!(info->callbacks->undefined_symbol
dc810e39 968 (info, symname, input_bfd,
915e5146
HPN		 969 input_section, rel->r_offset,
970 (!info->shared || info->no_undefined
971 || ELF_ST_VISIBILITY (h->other)))))
06c15ad7 972 return false;
06c15ad7
HPN		 973 relocation = 0;
974 }
975 }
a7c10850 976
915e5146 977 switch (r_type)
06c15ad7 978 {
915e5146
HPN		 979 case R_CRIS_16_GOTPLT:
980 case R_CRIS_32_GOTPLT:
981 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
982 but we require a PLT, and the PLT handling will take care of
983 filling in the PLT-specific GOT entry. For the GOT offset,
984 calculate it as we do when filling it in for the .got.plt
985 section. If we don't have a PLT, punt to GOT handling. */
986 if (h != NULL
987 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
06c15ad7 988 {
915e5146
HPN		 989 asection *sgotplt
990 = bfd_get_section_by_name (dynobj, ".got.plt");
991 bfd_vma got_offset;
a7c10850 992
915e5146
HPN		 993 BFD_ASSERT (h->dynindx != -1);
994 BFD_ASSERT (sgotplt != NULL);
a7c10850 995
915e5146
HPN		 996 got_offset
997 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
06c15ad7 998
915e5146 999 relocation = got_offset;
06c15ad7 1000 break;
915e5146 1001 }
06c15ad7 1002
4d96d128 1003 /* We didn't make a PLT entry for this symbol. Maybe everything is
915e5146
HPN		 1004 folded into the GOT. Other than folding, this happens when
1005 statically linking PIC code, or when using -Bsymbolic. Check
1006 that we instead have a GOT entry as done for us by
1007 elf_cris_adjust_dynamic_symbol, and drop through into the
1008 ordinary GOT cases. */
1009 if (h != NULL && h->got.offset == (bfd_vma) -1)
1010 {
1011 (*_bfd_error_handler)
1012 (_("%s: No PLT nor GOT for relocation %s against symbol `%s' from %s section"),
8f615d07 1013 bfd_archive_filename (input_bfd),
915e5146 1014 cris_elf_howto_table[r_type].name,
dc810e39 1015 symname[0] != '\0' ? symname : _("[whose name is lost]"),
915e5146
HPN		 1016 bfd_get_section_name (input_bfd, input_section));
1017
1018 /* FIXME: Perhaps blaming input is not the right thing to
1019 do; this is probably an internal error. But it is true
1020 that we didn't like that particular input. */
1021 bfd_set_error (bfd_error_bad_value);
1022 return false;
1023 }
1024 /* Fall through. */
1025
1026 /* The size of the actual relocation is not used here; we only
1027 fill in the GOT table here. */
1028 case R_CRIS_16_GOT:
1029 case R_CRIS_32_GOT:
1030 {
1031 bfd_vma off;
1032
1033 /* Note that despite using RELA relocations, the .got contents
1034 is always filled in with the link-relative relocation
1035 value; the addend. */
1036
1037 if (h != NULL)
1038 {
1039 off = h->got.offset;
1040 BFD_ASSERT (off != (bfd_vma) -1);
1041
1042 if (!elf_hash_table (info)->dynamic_sections_created
4d96d128 1043 || (! info->shared && h->dynindx == -1)
915e5146
HPN		 1044 || (info->shared
1045 && (info->symbolic || h->dynindx == -1)
1046 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
1047 {
4d96d128
HPN		 1048 /* This wasn't checked above for ! info->shared, but
1049 must hold there if we get here; the symbol must not
1050 be used in, or defined by a DSO. (Note that
1051 checking for ELF_LINK_HASH_DEF_REGULAR doesn't
1052 catch all cases.) */
1053 BFD_ASSERT (info->shared
1054 || (h->elf_link_hash_flags
1055 & (ELF_LINK_HASH_REF_DYNAMIC
1056 | ELF_LINK_HASH_DEF_DYNAMIC)) == 0);
1057
915e5146
HPN		 1058 /* This is actually a static link, or it is a
1059 -Bsymbolic link and the symbol is defined
1060 locally, or the symbol was forced to be local
4d96d128
HPN		 1061 because of a version file, or we're not creating a
1062 dynamic object and the symbol isn't referred to by
1063 a dynamic object. We must initialize
915e5146
HPN		 1064 this entry in the global offset table. Since
1065 the offset must always be a multiple of 4, we
1066 use the least significant bit to record whether
1067 we have initialized it already.
1068
1069 When doing a dynamic link, we create a .rela.got
1070 relocation entry to initialize the value. This
1071 is done in the finish_dynamic_symbol routine. */
1072 if ((off & 1) != 0)
1073 off &= ~1;
1074 else
1075 {
1076 bfd_put_32 (output_bfd, relocation,
1077 sgot->contents + off);
1078 h->got.offset |= 1;
1079 }
1080 }
1081 }
1082 else
1083 {
1084 BFD_ASSERT (local_got_offsets != NULL
1085 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1086
1087 off = local_got_offsets[r_symndx];
1088
1089 /* The offset must always be a multiple of 4. We use
1090 the least significant bit to record whether we have
1091 already generated the necessary reloc. */
1092 if ((off & 1) != 0)
1093 off &= ~1;
1094 else
1095 {
1096 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1097
1098 if (info->shared)
1099 {
1100 asection *srelgot;
1101 Elf_Internal_Rela outrel;
1102
1103 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1104 BFD_ASSERT (srelgot != NULL);
1105
1106 outrel.r_offset = (sgot->output_section->vma
1107 + sgot->output_offset
1108 + off);
1109 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1110 outrel.r_addend = relocation;
1111 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1112 (((Elf32_External_Rela *)
1113 srelgot->contents)
1114 + srelgot->reloc_count));
1115 ++srelgot->reloc_count;
1116 }
1117
1118 local_got_offsets[r_symndx] |= 1;
1119 }
1120 }
1121
1122 relocation = sgot->output_offset + off;
1123 if (rel->r_addend != 0)
1124 {
1125 /* We can't do anything for a relocation which is against
1126 a symbol *plus offset*. GOT holds relocations for
1127 symbols. Make this an error; the compiler isn't
1128 allowed to pass us these kinds of things. */
1129 if (h == NULL)
1130 (*_bfd_error_handler)
1131 (_("%s: relocation %s with non-zero addend %d against local symbol from %s section"),
8f615d07 1132 bfd_archive_filename (input_bfd),
915e5146
HPN		 1133 cris_elf_howto_table[r_type].name,
1134 rel->r_addend,
1135 bfd_get_section_name (input_bfd, input_section));
1136 else
1137 (*_bfd_error_handler)
1138 (_("%s: relocation %s with non-zero addend %d against symbol `%s' from %s section"),
8f615d07 1139 bfd_archive_filename (input_bfd),
915e5146
HPN		 1140 cris_elf_howto_table[r_type].name,
1141 rel->r_addend,
dc810e39 1142 symname[0] != '\0' ? symname : _("[whose name is lost]"),
915e5146
HPN		 1143 bfd_get_section_name (input_bfd, input_section));
1144
1145 bfd_set_error (bfd_error_bad_value);
1146 return false;
1147 }
1148 }
1149 break;
06c15ad7 1150
915e5146
HPN		 1151 case R_CRIS_32_GOTREL:
1152 /* This relocation must only be performed against local symbols. */
1153 if (h != NULL)
1154 {
1155 (*_bfd_error_handler)
1156 (_("%s: relocation %s is not allowed for global symbol: `%s' from %s section"),
8f615d07 1157 bfd_archive_filename (input_bfd),
915e5146 1158 cris_elf_howto_table[r_type].name,
dc810e39 1159 symname,
915e5146
HPN		 1160 bfd_get_section_name (input_bfd, input_section));
1161 bfd_set_error (bfd_error_bad_value);
1162 return false;
06c15ad7
HPN		 1163 }
1164
58255df3
HPN		 1165 /* This can happen if we get a link error with the input ELF
1166 variant mismatching the output variant. Emit an error so
1167 it's noticed if it happens elsewhere. */
1168 if (sgot == NULL)
1169 {
1170 (*_bfd_error_handler)
1171 (_("%s: relocation %s in section %s with no GOT created"),
1172 bfd_archive_filename (input_bfd),
1173 cris_elf_howto_table[r_type].name,
1174 bfd_get_section_name (input_bfd, input_section));
1175 bfd_set_error (bfd_error_bad_value);
1176 return false;
1177 }
1178
915e5146
HPN		 1179 /* This relocation is like a PC-relative one, except the
1180 reference point is the location of GOT. Note that
1181 sgot->output_offset is not involved in this calculation. We
1182 always want the start of entire .got section, not the
1183 position after the reserved header. */
1184 relocation -= sgot->output_section->vma;
1185 break;
06c15ad7 1186
915e5146
HPN		 1187 case R_CRIS_32_PLT_PCREL:
1188 /* Relocation is to the entry for this symbol in the
1189 procedure linkage table. */
06c15ad7 1190
915e5146
HPN		 1191 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1192 without using the procedure linkage table. */
1193 if (h == NULL)
1194 break;
1195
1196 if (h->plt.offset == (bfd_vma) -1
1197 || splt == NULL)
1198 {
1199 /* We didn't make a PLT entry for this symbol. This
1200 happens when statically linking PIC code, or when
1201 using -Bsymbolic. */
1202 break;
1203 }
1204
1205 relocation = (splt->output_section->vma
1206 + splt->output_offset
1207 + h->plt.offset);
1208 break;
1209
1210 case R_CRIS_32_PLT_GOTREL:
1211 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1212 start of the .got section. See also comment at
1213 R_CRIS_32_GOT. */
1214 relocation -= sgot->output_section->vma;
1215
1216 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1217 without using the procedure linkage table. */
1218 if (h == NULL)
1219 break;
1220
1221 if (h->plt.offset == (bfd_vma) -1
1222 || splt == NULL)
1223 {
1224 /* We didn't make a PLT entry for this symbol. This
1225 happens when statically linking PIC code, or when
1226 using -Bsymbolic. */
1227 break;
1228 }
1229
1230 relocation = (splt->output_section->vma
1231 + splt->output_offset
1232 + h->plt.offset
1233 - sgot->output_section->vma);
1234 break;
1235
1236 case R_CRIS_8_PCREL:
1237 case R_CRIS_16_PCREL:
1238 case R_CRIS_32_PCREL:
1239 /* If the symbol was local, we need no shlib-specific handling. */
1240 if (h == NULL)
1241 break;
1242
1243 /* Fall through. */
1244 case R_CRIS_8:
1245 case R_CRIS_16:
1246 case R_CRIS_32:
1247 if (info->shared
ec338859 1248 && r_symndx != 0
915e5146
HPN		 1249 && (input_section->flags & SEC_ALLOC) != 0
1250 && ((r_type != R_CRIS_8_PCREL
1251 && r_type != R_CRIS_16_PCREL
1252 && r_type != R_CRIS_32_PCREL)
1253 || (!info->symbolic
1254 || (h->elf_link_hash_flags
1255 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1256 {
1257 Elf_Internal_Rela outrel;
1258 boolean skip, relocate;
1259
1260 /* When generating a shared object, these relocations
1261 are copied into the output file to be resolved at run
1262 time. */
1263
1264 if (sreloc == NULL)
1265 {
1266 const char *name;
1267
1268 name = (bfd_elf_string_from_elf_section
1269 (input_bfd,
1270 elf_elfheader (input_bfd)->e_shstrndx,
1271 elf_section_data (input_section)->rel_hdr.sh_name));
1272 if (name == NULL)
1273 return false;
1274
1275 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1276 && strcmp (bfd_get_section_name (input_bfd,
1277 input_section),
1278 name + 5) == 0);
1279
1280 sreloc = bfd_get_section_by_name (dynobj, name);
1281
1282 /* That section should have been created in
1283 cris_elf_check_relocs, but that function will not be
1284 called for objects which fail in
1285 cris_elf_merge_private_bfd_data. */
1286 if (sreloc == NULL)
1287 {
1288 (*_bfd_error_handler)
1289 (_("%s: Internal inconsistency; no relocation section %s"),
8f615d07 1290 bfd_archive_filename (input_bfd),
915e5146
HPN		 1291 name);
1292
1293 bfd_set_error (bfd_error_bad_value);
1294 return false;
1295 }
1296 }
1297
1298 skip = false;
0bb2d96a 1299 relocate = false;
915e5146 1300
c629eae0
JJ		 1301 outrel.r_offset =
1302 _bfd_elf_section_offset (output_bfd, info, input_section,
1303 rel->r_offset);
1304 if (outrel.r_offset == (bfd_vma) -1)
1305 skip = true;
0bb2d96a
JJ		 1306 else if (outrel.r_offset == (bfd_vma) -2)
1307 skip = true, relocate = true;
915e5146
HPN		 1308 outrel.r_offset += (input_section->output_section->vma
1309 + input_section->output_offset);
1310
1311 if (skip)
0bb2d96a 1312 memset (&outrel, 0, sizeof outrel);
915e5146
HPN		 1313 /* h->dynindx may be -1 if the symbol was marked to
1314 become local. */
1315 else if (h != NULL
1316 && ((! info->symbolic && h->dynindx != -1)
1317 || (h->elf_link_hash_flags
1318 & ELF_LINK_HASH_DEF_REGULAR) == 0))
1319 {
1320 BFD_ASSERT (h->dynindx != -1);
915e5146
HPN		 1321 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1322 outrel.r_addend = relocation + rel->r_addend;
1323 }
1324 else
1325 {
1326 if (r_type == R_CRIS_32)
1327 {
1328 relocate = true;
1329 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1330 outrel.r_addend = relocation + rel->r_addend;
1331 }
1332 else
1333 {
1334 long indx;
1335
1336 if (h == NULL)
1337 sec = local_sections[r_symndx];
1338 else
1339 {
1340 BFD_ASSERT (h->root.type == bfd_link_hash_defined
1341 || (h->root.type
1342 == bfd_link_hash_defweak));
1343 sec = h->root.u.def.section;
1344 }
1345 if (sec != NULL && bfd_is_abs_section (sec))
1346 indx = 0;
1347 else if (sec == NULL || sec->owner == NULL)
1348 {
1349 bfd_set_error (bfd_error_bad_value);
1350 return false;
1351 }
1352 else
1353 {
1354 asection *osec;
1355
1356 osec = sec->output_section;
1357 indx = elf_section_data (osec)->dynindx;
1358 BFD_ASSERT (indx > 0);
1359 }
1360
915e5146
HPN		 1361 outrel.r_info = ELF32_R_INFO (indx, r_type);
1362 outrel.r_addend = relocation + rel->r_addend;
1363 }
1364 }
1365
1366 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1367 (((Elf32_External_Rela *)
1368 sreloc->contents)
1369 + sreloc->reloc_count));
1370 ++sreloc->reloc_count;
1371
1372 /* This reloc will be computed at runtime, so there's no
1373 need to do anything now, except for R_CRIS_32 relocations
1374 that have been turned into R_CRIS_RELATIVE. */
1375 if (!relocate)
1376 continue;
1377 }
1378
1379 break;
1380 }
1381
1382 r = cris_final_link_relocate (howto, input_bfd, input_section,
1383 contents, rel, relocation);
1384
1385 if (r != bfd_reloc_ok)
1386 {
1387 const char * msg = (const char *) NULL;
1388
1389 switch (r)
1390 {
1391 case bfd_reloc_overflow:
1392 r = info->callbacks->reloc_overflow
dc810e39 1393 (info, symname, howto->name, (bfd_vma) 0,
915e5146
HPN		 1394 input_bfd, input_section, rel->r_offset);
1395 break;
1396
1397 case bfd_reloc_undefined:
1398 r = info->callbacks->undefined_symbol
dc810e39 1399 (info, symname, input_bfd, input_section, rel->r_offset,
915e5146
HPN		 1400 true);
1401 break;
1402
1403 case bfd_reloc_outofrange:
1404 msg = _("internal error: out of range error");
1405 break;
1406
1407 case bfd_reloc_notsupported:
1408 msg = _("internal error: unsupported relocation error");
1409 break;
1410
1411 case bfd_reloc_dangerous:
1412 msg = _("internal error: dangerous relocation");
1413 break;
1414
1415 default:
1416 msg = _("internal error: unknown error");
1417 break;
1418 }
1419
1420 if (msg)
1421 r = info->callbacks->warning
dc810e39 1422 (info, msg, symname, input_bfd, input_section, rel->r_offset);
915e5146
HPN		 1423
1424 if (! r)
1425 return false;
1426 }
1427 }
1428
1429 return true;
1430}
1431\f
1432/* Finish up dynamic symbol handling. We set the contents of various
1433 dynamic sections here. */
1434
1435static boolean
1436elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
1437 bfd *output_bfd;
1438 struct bfd_link_info *info;
1439 struct elf_link_hash_entry *h;
1440 Elf_Internal_Sym *sym;
1441{
1442 bfd *dynobj;
1443 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
1444
1445 dynobj = elf_hash_table (info)->dynobj;
1446
1447 if (h->plt.offset != (bfd_vma) -1)
1448 {
1449 asection *splt;
1450 asection *sgotplt;
1451 asection *sgot;
1452 asection *srela;
1453 bfd_vma got_base;
1454
1455 bfd_vma gotplt_offset
1456 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1457 Elf_Internal_Rela rela;
1458 boolean has_gotplt = gotplt_offset != 0;
1459
1460 /* Get the index in the procedure linkage table which
1461 corresponds to this symbol. This is the index of this symbol
1462 in all the symbols for which we are making plt entries. The
1463 first entry in the procedure linkage table is reserved. */
1464 /* We have to count backwards here, and the result is only valid as
1465 an index into .got.plt and its relocations. FIXME: Constants... */
1466 bfd_vma gotplt_index = gotplt_offset/4 - 3;
1467
1468 /* Get the offset into the .got table of the entry that corresponds
1469 to this function. Note that we embed knowledge that "incoming"
1470 .got goes after .got.plt in the output without padding (pointer
1471 aligned). However, that knowledge is present in several other
1472 places too, here and in elflink.h at least. */
1473 bfd_vma got_offset
1474 = (has_gotplt
1475 ? gotplt_offset
1476 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
1477
1478 /* This symbol has an entry in the procedure linkage table. Set it
1479 up. */
1480
1481 BFD_ASSERT (h->dynindx != -1);
1482
1483 splt = bfd_get_section_by_name (dynobj, ".plt");
1484 sgot = bfd_get_section_by_name (dynobj, ".got");
1485 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1486 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
1487 BFD_ASSERT (splt != NULL && sgotplt != NULL
1488 && (! has_gotplt || srela != NULL));
1489
1490 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
1491
1492 /* Fill in the entry in the procedure linkage table. */
1493 if (! info->shared)
1494 {
1495 memcpy (splt->contents + h->plt.offset, elf_cris_plt_entry,
1496 PLT_ENTRY_SIZE);
1497
1498 /* We need to enter the absolute address of the GOT entry here. */
1499 bfd_put_32 (output_bfd, got_base + got_offset,
1500 splt->contents + h->plt.offset + plt_off1);
1501 }
1502 else
1503 {
1504 memcpy (splt->contents + h->plt.offset, elf_cris_pic_plt_entry,
1505 PLT_ENTRY_SIZE);
1506 bfd_put_32 (output_bfd, got_offset,
1507 splt->contents + h->plt.offset + plt_off1);
1508 }
1509
1510 /* Fill in the plt entry and make a relocation, if this is a "real"
1511 PLT entry. */
1512 if (has_gotplt)
1513 {
1514 /* Fill in the offset into the reloc table. */
1515 bfd_put_32 (output_bfd,
1516 gotplt_index * sizeof (Elf32_External_Rela),
1517 splt->contents + h->plt.offset + plt_off2);
1518
1519 /* Fill in the offset to the first PLT entry, where to "jump". */
1520 bfd_put_32 (output_bfd, - (h->plt.offset + plt_off3 + 4),
1521 splt->contents + h->plt.offset + plt_off3);
1522
1523 /* Fill in the entry in the global offset table with the address of
1524 the relocating stub. */
1525 bfd_put_32 (output_bfd,
1526 (splt->output_section->vma
1527 + splt->output_offset
1528 + h->plt.offset
1529 + 8),
1530 sgotplt->contents + got_offset);
1531
1532 /* Fill in the entry in the .rela.plt section. */
1533 rela.r_offset = (sgotplt->output_section->vma
1534 + sgotplt->output_offset
1535 + got_offset);
1536 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
1537 rela.r_addend = 0;
1538 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1539 ((Elf32_External_Rela *) srela->contents
1540 + gotplt_index));
1541 }
1542
1543 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1544 {
1545 /* Mark the symbol as undefined, rather than as defined in
1546 the .plt section. Leave the value alone. */
1547 sym->st_shndx = SHN_UNDEF;
1548
1549 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
1550 know whether resetting the value is significant; if it really
1551 is, rather than a quirk or bug in the sparc port, then I
1552 believe we'd see this elsewhere. */
1553 /* If the symbol is weak, we do need to clear the value.
1554 Otherwise, the PLT entry would provide a definition for
1555 the symbol even if the symbol wasn't defined anywhere,
1556 and so the symbol would never be NULL. */
1557 if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
1558 == 0)
1559 sym->st_value = 0;
1560 }
1561 }
1562
4d96d128
HPN		 1563 /* We don't emit .got relocs for symbols that aren't in the
1564 dynamic-symbols table for an ordinary program. */
1565 if (h->got.offset != (bfd_vma) -1
1566 && (info->shared || h->dynindx != -1))
915e5146
HPN		 1567 {
1568 asection *sgot;
1569 asection *srela;
1570 Elf_Internal_Rela rela;
dc810e39 1571 bfd_byte *where;
915e5146
HPN		 1572
1573 /* This symbol has an entry in the global offset table. Set it up. */
1574
1575 sgot = bfd_get_section_by_name (dynobj, ".got");
1576 srela = bfd_get_section_by_name (dynobj, ".rela.got");
1577 BFD_ASSERT (sgot != NULL && srela != NULL);
1578
1579 rela.r_offset = (sgot->output_section->vma
1580 + sgot->output_offset
dc810e39 1581 + (h->got.offset &~ (bfd_vma) 1));
915e5146
HPN		 1582
1583 /* If this is a static link, or it is a -Bsymbolic link and the
1584 symbol is defined locally or was forced to be local because
1585 of a version file, we just want to emit a RELATIVE reloc.
1586 The entry in the global offset table will already have been
1587 initialized in the relocate_section function. */
dc810e39 1588 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
915e5146
HPN		 1589 if (! elf_hash_table (info)->dynamic_sections_created
1590 || (info->shared
1591 && (info->symbolic || h->dynindx == -1)
1592 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
1593 {
1594 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
dc810e39 1595 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
915e5146
HPN		 1596 }
1597 else
1598 {
dc810e39 1599 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
915e5146
HPN		 1600 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
1601 rela.r_addend = 0;
1602 }
1603
1604 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1605 ((Elf32_External_Rela *) srela->contents
1606 + srela->reloc_count));
1607 ++srela->reloc_count;
1608 }
1609
1610 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
1611 {
1612 asection *s;
1613 Elf_Internal_Rela rela;
1614
1615 /* This symbol needs a copy reloc. Set it up. */
1616
1617 BFD_ASSERT (h->dynindx != -1
1618 && (h->root.type == bfd_link_hash_defined
1619 || h->root.type == bfd_link_hash_defweak));
1620
1621 s = bfd_get_section_by_name (h->root.u.def.section->owner,
1622 ".rela.bss");
1623 BFD_ASSERT (s != NULL);
1624
1625 rela.r_offset = (h->root.u.def.value
1626 + h->root.u.def.section->output_section->vma
1627 + h->root.u.def.section->output_offset);
1628 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
1629 rela.r_addend = 0;
1630 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1631 ((Elf32_External_Rela *) s->contents
1632 + s->reloc_count));
1633 ++s->reloc_count;
1634 }
1635
1636 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1637 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1638 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1639 sym->st_shndx = SHN_ABS;
1640
1641 return true;
1642}
1643\f
1644/* Finish up the dynamic sections. */
1645
1646static boolean
1647elf_cris_finish_dynamic_sections (output_bfd, info)
1648 bfd *output_bfd;
1649 struct bfd_link_info *info;
1650{
1651 bfd *dynobj;
1652 asection *sgot;
1653 asection *sdyn;
1654
1655 dynobj = elf_hash_table (info)->dynobj;
1656
1657 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
1658 BFD_ASSERT (sgot != NULL);
1659 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1660
1661 if (elf_hash_table (info)->dynamic_sections_created)
1662 {
1663 asection *splt;
1664 Elf32_External_Dyn *dyncon, *dynconend;
1665
1666 splt = bfd_get_section_by_name (dynobj, ".plt");
1667 BFD_ASSERT (splt != NULL && sdyn != NULL);
1668
1669 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1670 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
1671 for (; dyncon < dynconend; dyncon++)
1672 {
1673 Elf_Internal_Dyn dyn;
1674 asection *s;
1675
1676 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1677
1678 switch (dyn.d_tag)
1679 {
1680 default:
1681 break;
1682
1683 case DT_PLTGOT:
1684 s = bfd_get_section_by_name (output_bfd, ".got");
1685 BFD_ASSERT (s != NULL);
1686 dyn.d_un.d_ptr = s->vma;
1687 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1688 break;
1689
1690 case DT_JMPREL:
1691 /* Yes, we *can* have a .plt and no .plt.rela, for instance
1692 if all symbols are found in the .got (not .got.plt). */
1693 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1694 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
1695 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1696 break;
1697
1698 case DT_PLTRELSZ:
1699 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1700 if (s == NULL)
1701 dyn.d_un.d_val = 0;
1702 else if (s->_cooked_size != 0)
1703 dyn.d_un.d_val = s->_cooked_size;
1704 else
1705 dyn.d_un.d_val = s->_raw_size;
1706 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1707 break;
1708
1709 case DT_RELASZ:
1710 /* The procedure linkage table relocs (DT_JMPREL) should
1711 not be included in the overall relocs (DT_RELA).
1712 Therefore, we override the DT_RELASZ entry here to
1713 make it not include the JMPREL relocs. Since the
1714 linker script arranges for .rela.plt to follow all
1715 other relocation sections, we don't have to worry
1716 about changing the DT_RELA entry. */
1717 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1718 if (s != NULL)
1719 {
1720 if (s->_cooked_size != 0)
1721 dyn.d_un.d_val -= s->_cooked_size;
1722 else
1723 dyn.d_un.d_val -= s->_raw_size;
1724 }
1725 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1726 break;
1727 }
1728 }
1729
1730 /* Fill in the first entry in the procedure linkage table. */
1731 if (splt->_raw_size > 0)
1732 {
1733 if (info->shared)
1734 memcpy (splt->contents, elf_cris_pic_plt0_entry, PLT_ENTRY_SIZE);
1735 else
1736 {
1737 memcpy (splt->contents, elf_cris_plt0_entry, PLT_ENTRY_SIZE);
1738 bfd_put_32 (output_bfd,
1739 sgot->output_section->vma + sgot->output_offset + 4,
1740 splt->contents + 6);
1741 bfd_put_32 (output_bfd,
1742 sgot->output_section->vma + sgot->output_offset + 8,
1743 splt->contents + 14);
1744
1745 elf_section_data (splt->output_section)->this_hdr.sh_entsize
1746 = PLT_ENTRY_SIZE;
1747 }
1748 }
1749 }
1750
1751 /* Fill in the first three entries in the global offset table. */
1752 if (sgot->_raw_size > 0)
1753 {
1754 if (sdyn == NULL)
1755 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1756 else
1757 bfd_put_32 (output_bfd,
1758 sdyn->output_section->vma + sdyn->output_offset,
1759 sgot->contents);
1760 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
1761 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
1762 }
1763
1764 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1765
1766 return true;
06c15ad7
HPN		 1767}
1768\f
1769/* Return the section that should be marked against GC for a given
1770 relocation. */
1771
1772static asection *
1773cris_elf_gc_mark_hook (abfd, info, rel, h, sym)
1774 bfd * abfd;
1775 struct bfd_link_info * info ATTRIBUTE_UNUSED;
1776 Elf_Internal_Rela * rel;
1777 struct elf_link_hash_entry * h;
1778 Elf_Internal_Sym * sym;
1779{
1780 if (h != NULL)
1781 {
1782 switch (ELF32_R_TYPE (rel->r_info))
1783 {
1784 case R_CRIS_GNU_VTINHERIT:
1785 case R_CRIS_GNU_VTENTRY:
1786 break;
1787
1788 default:
1789 switch (h->root.type)
1790 {
1791 case bfd_link_hash_defined:
1792 case bfd_link_hash_defweak:
1793 return h->root.u.def.section;
1794
1795 case bfd_link_hash_common:
1796 return h->root.u.c.p->section;
1797
1798 default:
1799 break;
1800 }
1801 }
1802 }
1803 else
1804 {
9ad5cbcf 1805 return bfd_section_from_elf_index (abfd, sym->st_shndx);
06c15ad7
HPN		 1806 }
1807
1808 return NULL;
1809}
1810
1811/* Update the got entry reference counts for the section being removed. */
1812
1813static boolean
1814cris_elf_gc_sweep_hook (abfd, info, sec, relocs)
1815 bfd * abfd ATTRIBUTE_UNUSED;
1816 struct bfd_link_info * info ATTRIBUTE_UNUSED;
1817 asection * sec ATTRIBUTE_UNUSED;
1818 const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED;
1819{
915e5146
HPN		 1820 Elf_Internal_Shdr *symtab_hdr;
1821 struct elf_link_hash_entry **sym_hashes;
1822 bfd_signed_vma *local_got_refcounts;
1823 const Elf_Internal_Rela *rel, *relend;
1824 unsigned long r_symndx;
1825 struct elf_link_hash_entry *h;
1826 bfd *dynobj;
1827 asection *sgot;
1828 asection *srelgot;
1829
1830 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1831 sym_hashes = elf_sym_hashes (abfd);
1832 local_got_refcounts = elf_local_got_refcounts (abfd);
1833
1834 dynobj = elf_hash_table (info)->dynobj;
1835 if (dynobj == NULL)
1836 return true;
1837
1838 sgot = bfd_get_section_by_name (dynobj, ".got");
1839 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1840
1841 relend = relocs + sec->reloc_count;
1842 for (rel = relocs; rel < relend; rel++)
1843 {
1844 switch (ELF32_R_TYPE (rel->r_info))
1845 {
1846 case R_CRIS_16_GOT:
1847 case R_CRIS_32_GOT:
1848 r_symndx = ELF32_R_SYM (rel->r_info);
1849 if (r_symndx >= symtab_hdr->sh_info)
1850 {
1851 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1852 if (h->got.refcount > 0)
1853 {
1854 --h->got.refcount;
1855 if (h->got.refcount == 0)
1856 {
1857 /* We don't need the .got entry any more. */
1858 sgot->_raw_size -= 4;
1859 srelgot->_raw_size -= sizeof (Elf32_External_Rela);
1860 }
1861 }
1862 break;
1863 }
1864
1865 local_got_reloc:
1866 if (local_got_refcounts != NULL)
1867 {
1868 if (local_got_refcounts[r_symndx] > 0)
1869 {
1870 --local_got_refcounts[r_symndx];
1871 if (local_got_refcounts[r_symndx] == 0)
1872 {
1873 /* We don't need the .got entry any more. */
1874 sgot->_raw_size -= 4;
1875 if (info->shared)
1876 srelgot->_raw_size -= sizeof (Elf32_External_Rela);
1877 }
1878 }
1879 }
1880 break;
1881
1882 case R_CRIS_16_GOTPLT:
1883 case R_CRIS_32_GOTPLT:
1884 /* For local symbols, treat these like GOT relocs. */
1885 r_symndx = ELF32_R_SYM (rel->r_info);
1886 if (r_symndx < symtab_hdr->sh_info)
1887 goto local_got_reloc;
1888
1889 case R_CRIS_32_PLT_GOTREL:
1890 /* FIXME: We don't garbage-collect away the .got section. */
1891 if (local_got_refcounts != NULL)
1892 local_got_refcounts[-1]--;
1893 /* Fall through. */
1894
1895 case R_CRIS_8_PCREL:
1896 case R_CRIS_16_PCREL:
1897 case R_CRIS_32_PCREL:
1898 case R_CRIS_32_PLT_PCREL:
1899 r_symndx = ELF32_R_SYM (rel->r_info);
1900 if (r_symndx >= symtab_hdr->sh_info)
1901 {
1902 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1903 if (h->plt.refcount > 0)
1904 --h->plt.refcount;
1905 }
1906 break;
1907
1908 default:
1909 break;
1910 }
1911 }
1912
06c15ad7
HPN		 1913 return true;
1914}
1915
915e5146
HPN		 1916/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1917 entry but we found we will not create any. Called when we find we will
4d96d128
HPN		 1918 not have any PLT for this symbol, by for example
1919 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
1920 or elf_cris_size_dynamic_sections if no dynamic sections will be
1921 created (we're only linking static objects). */
915e5146
HPN		 1922
1923static boolean
1924elf_cris_adjust_gotplt_to_got (h, p)
1925 struct elf_cris_link_hash_entry *h;
1926 PTR p;
1927{
1928 struct bfd_link_info *info = (struct bfd_link_info *) p;
1929 bfd *dynobj = elf_hash_table (info)->dynobj;
1930
1931 BFD_ASSERT (dynobj != NULL);
1932
e92d460e
AM		 1933 if (h->root.root.type == bfd_link_hash_warning)
1934 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
1935
915e5146
HPN		 1936 /* If nobody wanted a GOTPLT with this symbol, we're done. */
1937 if (h->gotplt_refcount <= 0)
1938 return true;
1939
1940 if (h->root.got.refcount > 0)
1941 {
1942 /* There's a GOT entry for this symbol. Just adjust the refcount.
1943 Probably not necessary at this stage, but keeping it accurate
1944 helps avoiding surprises later. */
1945 h->root.got.refcount += h->gotplt_refcount;
1946 h->gotplt_refcount = -1;
1947 }
1948 else
1949 {
4d96d128 1950 /* No GOT entry for this symbol. We need to create one. */
915e5146
HPN		 1951 asection *sgot = bfd_get_section_by_name (dynobj, ".got");
1952 asection *srelgot
1953 = bfd_get_section_by_name (dynobj, ".rela.got");
1954
1955 /* Put an accurate refcount there. */
1956 h->root.got.refcount = h->gotplt_refcount;
1957
1958 h->gotplt_refcount = -1;
1959
1960 /* We always have a .got section when there are dynamic
1961 relocs. */
1962 BFD_ASSERT (sgot != NULL /* Surely have .got section. */);
1963
1964 /* We might have had a PLT but with no GOT entry and
1965 further no GOT reloc section at all needed before.
1966 Add it. */
1967 if (srelgot == NULL)
1968 {
1969 srelgot = bfd_make_section (dynobj, ".rela.got");
1970
1971 if (srelgot == NULL
1972 || !bfd_set_section_flags (dynobj, srelgot,
1973 (SEC_ALLOC
1974 | SEC_LOAD
1975 | SEC_HAS_CONTENTS
1976 | SEC_IN_MEMORY
1977 | SEC_LINKER_CREATED
1978 | SEC_READONLY))
1979 || !bfd_set_section_alignment (dynobj, srelgot, 2))
1980 return false;
1981 }
1982
1983 /* Allocate space in the .got section. */
1984 sgot->_raw_size += 4;
1985
1986 /* Allocate relocation space. */
1987 srelgot->_raw_size += sizeof (Elf32_External_Rela);
1988 }
1989
1990 return true;
1991}
1992
1993/* Try to fold PLT entries with GOT entries. There are two cases when we
1994 want to do this:
1995
1996 - When all PLT references are GOTPLT references, and there are GOT
1997 references. We don't have to generate a PLT at all.
1998
1999 - When there are both (ordinary) PLT references and GOT references.
2000 We want to make the PLT reference use the ordinary GOT entry rather
2001 than a run-time dynamically resolved GOTPLT entry (since the GOT
2002 entry will have to be resolved at startup anyway).
2003
2004 Though the latter case is handled when room for the PLT is allocated,
2005 not here.
2006
2007 Note that this function is called before symbols are forced local by
2008 version scripts. The differing cases are handled by
2009 elf_cris_hide_symbol. */
2010
2011static boolean
2012elf_cris_try_fold_plt_to_got (h, p)
2013 struct elf_cris_link_hash_entry *h;
2014 PTR p;
2015{
2016 struct bfd_link_info *info = (struct bfd_link_info *) p;
2017
2018 /* If there are no GOT references for this symbol, we can't fold any
2019 other reference so there's nothing to do. Likewise if there are no
2020 PLT references; GOTPLT references included. */
2021 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2022 return true;
2023
2024 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2025 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2026
2027 if (h->gotplt_refcount == h->root.plt.refcount)
2028 {
4d96d128 2029 /* The only PLT references are GOTPLT references, and there are GOT
915e5146
HPN		 2030 references. Convert PLT to GOT references. */
2031 if (! elf_cris_adjust_gotplt_to_got (h, info))
2032 return false;
2033
2034 /* Clear the PLT references, so no PLT will be created. */
2035 h->root.plt.offset = (bfd_vma) -1;
2036 }
2037
2038 return true;
2039}
2040
2041/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2042 to use a GOT entry (and create one) rather than requiring a GOTPLT
2043 entry. */
2044
2045static void
e5094212 2046elf_cris_hide_symbol (info, h, force_local)
915e5146
HPN		 2047 struct bfd_link_info *info;
2048 struct elf_link_hash_entry *h;
e5094212 2049 boolean force_local;
915e5146
HPN		 2050{
2051 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2052
e5094212 2053 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
915e5146
HPN		 2054}
2055
2056/* Adjust a symbol defined by a dynamic object and referenced by a
2057 regular object. The current definition is in some section of the
2058 dynamic object, but we're not including those sections. We have to
2059 change the definition to something the rest of the link can
2060 understand. */
2061
2062static boolean
2063elf_cris_adjust_dynamic_symbol (info, h)
2064 struct bfd_link_info *info;
2065 struct elf_link_hash_entry *h;
2066{
2067 bfd *dynobj;
2068 asection *s;
2069 unsigned int power_of_two;
2070
2071 dynobj = elf_hash_table (info)->dynobj;
2072
2073 /* Make sure we know what is going on here. */
2074 BFD_ASSERT (dynobj != NULL
2075 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
2076 || h->weakdef != NULL
2077 || ((h->elf_link_hash_flags
2078 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2079 && (h->elf_link_hash_flags
2080 & ELF_LINK_HASH_REF_REGULAR) != 0
2081 && (h->elf_link_hash_flags
2082 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
2083
2084 /* If this is a function, put it in the procedure linkage table. We
2085 will fill in the contents of the procedure linkage table later,
2086 when we know the address of the .got section. */
2087 if (h->type == STT_FUNC
2088 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2089 {
2090 if (! info->shared
2091 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
2092 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
2093 /* We must always create the plt entry if it was referenced by a
2094 PLT relocation. In this case we already recorded it as a
2095 dynamic symbol. */
2096 /* FIXME: m68k and i386 differ here, for unclear reasons. */
2097 && h->dynindx == -1)
2098 {
2099 /* This case can occur if we saw a PLT reloc in an input file,
2100 but the symbol was never referred to by a dynamic object. In
2101 such a case, we don't actually need to build a procedure
4d96d128
HPN		 2102 linkage table, and we can just do a PC reloc instead, or
2103 change a .got.plt index to a .got index for GOTPLT relocs. */
915e5146
HPN		 2104 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
2105 h->plt.offset = (bfd_vma) -1;
2106
2107 return
2108 elf_cris_adjust_gotplt_to_got ((struct
2109 elf_cris_link_hash_entry *) h,
2110 info);
2111 }
2112
2113 /* If there are only GOT references and GOTPLT references to this
2114 PLT entry, get rid of the PLT. */
2115 if (! elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry *)
2116 h, info))
2117 return false;
2118
2119 /* GC or folding may have rendered this entry unused. */
2120 if (h->plt.refcount <= 0)
2121 {
2122 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2123 h->plt.offset = (bfd_vma) -1;
2124 return true;
2125 }
2126
2127 /* Make sure this symbol is output as a dynamic symbol. */
2128 if (h->dynindx == -1)
2129 {
2130 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2131 return false;
2132 }
2133
2134 s = bfd_get_section_by_name (dynobj, ".plt");
2135 BFD_ASSERT (s != NULL);
2136
2137 /* If this is the first .plt entry, make room for the special
2138 first entry. */
2139 if (s->_raw_size == 0)
2140 s->_raw_size += PLT_ENTRY_SIZE;
2141
2142 /* If this symbol is not defined in a regular file, and we are
2143 not generating a shared library, then set the symbol to this
2144 location in the .plt. This is required to make function
2145 pointers compare as equal between the normal executable and
2146 the shared library. */
2147 if (!info->shared
2148 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2149 {
2150 h->root.u.def.section = s;
2151 h->root.u.def.value = s->_raw_size;
2152 }
2153
4d96d128
HPN		 2154 /* If there's already a GOT entry, use that, not a .got.plt. A
2155 GOT field still has a reference count when we get here; it's
2156 not yet changed to an offset. */
915e5146
HPN		 2157 if (h->got.refcount > 0)
2158 {
2159 h->got.refcount += h->plt.refcount;
2160
2161 /* Mark the PLT offset to use the GOT entry by setting the low
2162 bit in the plt offset; it is always a multiple of
2163 pointer-size. */
2164 BFD_ASSERT ((s->_raw_size & 3) == 0);
2165
2166 /* Change the PLT refcount to an offset. */
2167 h->plt.offset = s->_raw_size;
2168
2169 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2170 that the got entry should be used instead. */
2171 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2172 h)->gotplt_offset == 0);
2173
2174 /* Make room for this entry. */
2175 s->_raw_size += PLT_ENTRY_SIZE;
2176
2177 return true;
2178 }
2179
2180 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2181 h->plt.offset = s->_raw_size;
2182
2183 /* Make room for this entry. */
2184 s->_raw_size += PLT_ENTRY_SIZE;
2185
2186 /* We also need to make an entry in the .got.plt section, which
2187 will be placed in the .got section by the linker script. */
2188 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2189 = elf_cris_hash_table (info)->next_gotplt_entry;
2190 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2191
2192 s = bfd_get_section_by_name (dynobj, ".got.plt");
2193 BFD_ASSERT (s != NULL);
2194 s->_raw_size += 4;
2195
2196 /* We also need to make an entry in the .rela.plt section. */
2197
2198 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2199 BFD_ASSERT (s != NULL);
2200 s->_raw_size += sizeof (Elf32_External_Rela);
2201
2202 return true;
2203 }
2204
2205 /* Reinitialize the plt offset now that it is not used as a reference
2206 count any more. */
2207 h->plt.offset = (bfd_vma) -1;
2208
2209 /* If this is a weak symbol, and there is a real definition, the
2210 processor independent code will have arranged for us to see the
2211 real definition first, and we can just use the same value. */
2212 if (h->weakdef != NULL)
2213 {
2214 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2215 || h->weakdef->root.type == bfd_link_hash_defweak);
2216 h->root.u.def.section = h->weakdef->root.u.def.section;
2217 h->root.u.def.value = h->weakdef->root.u.def.value;
2218 return true;
2219 }
2220
2221 /* This is a reference to a symbol defined by a dynamic object which
2222 is not a function. */
2223
2224 /* If we are creating a shared library, we must presume that the
2225 only references to the symbol are via the global offset table.
2226 For such cases we need not do anything here; the relocations will
2227 be handled correctly by relocate_section. */
2228 if (info->shared)
2229 return true;
2230
2231 /* If there are no references to this symbol that do not use the
2232 GOT, we don't need to generate a copy reloc. */
2233 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
2234 return true;
2235
2236 /* We must allocate the symbol in our .dynbss section, which will
2237 become part of the .bss section of the executable. There will be
2238 an entry for this symbol in the .dynsym section. The dynamic
2239 object will contain position independent code, so all references
2240 from the dynamic object to this symbol will go through the global
2241 offset table. The dynamic linker will use the .dynsym entry to
2242 determine the address it must put in the global offset table, so
2243 both the dynamic object and the regular object will refer to the
2244 same memory location for the variable. */
2245
2246 s = bfd_get_section_by_name (dynobj, ".dynbss");
2247 BFD_ASSERT (s != NULL);
2248
2249 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
2250 copy the initial value out of the dynamic object and into the
2251 runtime process image. We need to remember the offset into the
2252 .rela.bss section we are going to use. */
2253 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2254 {
2255 asection *srel;
2256
2257 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
2258 BFD_ASSERT (srel != NULL);
2259 srel->_raw_size += sizeof (Elf32_External_Rela);
2260 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
2261 }
2262
2263 /* Historic precedent: m68k and i386 allow max 8-byte alignment for the
2264 thing to copy; so do we. */
2265
2266 /* We need to figure out the alignment required for this symbol. I
2267 have no idea how ELF linkers handle this. */
2268 power_of_two = bfd_log2 (h->size);
2269 if (power_of_two > 3)
2270 power_of_two = 3;
2271
2272 /* Apply the required alignment. */
2273 s->_raw_size = BFD_ALIGN (s->_raw_size,
2274 (bfd_size_type) (1 << power_of_two));
2275 if (power_of_two > bfd_get_section_alignment (dynobj, s))
2276 {
2277 if (!bfd_set_section_alignment (dynobj, s, power_of_two))
2278 return false;
2279 }
2280
2281 /* Define the symbol as being at this point in the section. */
2282 h->root.u.def.section = s;
2283 h->root.u.def.value = s->_raw_size;
2284
2285 /* Increment the section size to make room for the symbol. */
2286 s->_raw_size += h->size;
2287
2288 return true;
2289}
2290
2291/* Look through the relocs for a section during the first phase. */
a7c10850 2292
06c15ad7
HPN		 2293static boolean
2294cris_elf_check_relocs (abfd, info, sec, relocs)
2295 bfd *abfd;
2296 struct bfd_link_info *info;
2297 asection *sec;
2298 const Elf_Internal_Rela *relocs;
2299{
915e5146 2300 bfd *dynobj;
06c15ad7
HPN		 2301 Elf_Internal_Shdr *symtab_hdr;
2302 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
915e5146 2303 bfd_signed_vma *local_got_refcounts;
06c15ad7
HPN		 2304 const Elf_Internal_Rela *rel;
2305 const Elf_Internal_Rela *rel_end;
915e5146
HPN		 2306 asection *sgot;
2307 asection *srelgot;
2308 asection *sreloc;
a7c10850 2309
06c15ad7
HPN		 2310 if (info->relocateable)
2311 return true;
a7c10850 2312
915e5146 2313 dynobj = elf_hash_table (info)->dynobj;
06c15ad7
HPN		 2314 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2315 sym_hashes = elf_sym_hashes (abfd);
a7c10850 2316 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
915e5146
HPN		 2317 local_got_refcounts = elf_local_got_refcounts (abfd);
2318
2319 sgot = NULL;
2320 srelgot = NULL;
2321 sreloc = NULL;
2322
06c15ad7
HPN		 2323 if (!elf_bad_symtab (abfd))
2324 sym_hashes_end -= symtab_hdr->sh_info;
a7c10850 2325
06c15ad7
HPN		 2326 rel_end = relocs + sec->reloc_count;
2327 for (rel = relocs; rel < rel_end; rel++)
2328 {
2329 struct elf_link_hash_entry *h;
2330 unsigned long r_symndx;
915e5146 2331 enum elf_cris_reloc_type r_type;
a7c10850 2332
06c15ad7
HPN		 2333 r_symndx = ELF32_R_SYM (rel->r_info);
2334 if (r_symndx < symtab_hdr->sh_info)
2335 h = NULL;
2336 else
2337 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
a7c10850 2338
915e5146
HPN		 2339 r_type = ELF32_R_TYPE (rel->r_info);
2340
2341 /* Some relocs require linker-created sections; we need to hang them
2342 on the first input bfd we found that contained dynamic relocs. */
2343 switch (r_type)
2344 {
2345 case R_CRIS_16_GOT:
2346 case R_CRIS_32_GOT:
2347 case R_CRIS_32_GOTREL:
2348 case R_CRIS_32_PLT_GOTREL:
2349 case R_CRIS_32_PLT_PCREL:
2350 case R_CRIS_16_GOTPLT:
2351 case R_CRIS_32_GOTPLT:
2352 if (dynobj == NULL)
2353 {
2354 elf_hash_table (info)->dynobj = dynobj = abfd;
2355
2356 /* Create the .got section, so we can assume it's always
2357 present whenever there's a dynobj. */
2358 if (!_bfd_elf_create_got_section (dynobj, info))
2359 return false;
2360 }
2361 break;
2362
2363 default:
2364 break;
2365 }
2366
2367 /* Some relocs require a global offset table (but perhaps not a
2368 specific GOT entry). */
4d96d128 2369 switch (r_type)
915e5146
HPN		 2370 {
2371 case R_CRIS_16_GOT:
2372 case R_CRIS_32_GOT:
2373 case R_CRIS_32_GOTREL:
2374 case R_CRIS_32_PLT_GOTREL:
2375 if (sgot == NULL)
2376 sgot = bfd_get_section_by_name (dynobj, ".got");
2377
2378 if (local_got_refcounts == NULL)
2379 {
dc810e39 2380 bfd_size_type amt;
915e5146
HPN		 2381
2382 /* We use index local_got_refcounts[-1] to count all
2383 GOT-relative relocations that do not have explicit
2384 GOT entries. */
dc810e39
AM		 2385 amt = symtab_hdr->sh_info + 1;
2386 amt *= sizeof (bfd_signed_vma);
51b64d56 2387 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
915e5146
HPN		 2388 if (local_got_refcounts == NULL)
2389 return false;
915e5146
HPN		 2390
2391 local_got_refcounts++;
2392 elf_local_got_refcounts (abfd) = local_got_refcounts;
2393 }
2394 break;
2395
2396 default:
2397 break;
2398 }
2399
4d96d128 2400 switch (r_type)
06c15ad7 2401 {
915e5146
HPN		 2402 case R_CRIS_16_GOTPLT:
2403 case R_CRIS_32_GOTPLT:
2404 /* Mark that we need a GOT entry if the PLT entry (and its GOT
2405 entry) is eliminated. We can only do this for a non-local
2406 symbol. */
2407 if (h != NULL)
2408 {
2409 ((struct elf_cris_link_hash_entry *) h)->gotplt_refcount++;
2410 goto handle_gotplt_reloc;
2411 }
2412 /* If h is NULL then this is a local symbol, and we must make a
2413 GOT entry for it, so handle it like a GOT reloc. */
2414 /* Fall through. */
2415
2416 case R_CRIS_16_GOT:
2417 case R_CRIS_32_GOT:
2418 /* This symbol requires a global offset table entry. */
2419
2420 if (srelgot == NULL
2421 && (h != NULL || info->shared))
2422 {
2423 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2424 if (srelgot == NULL)
2425 {
2426 srelgot = bfd_make_section (dynobj, ".rela.got");
2427 if (srelgot == NULL
2428 || !bfd_set_section_flags (dynobj, srelgot,
2429 (SEC_ALLOC
2430 | SEC_LOAD
2431 | SEC_HAS_CONTENTS
2432 | SEC_IN_MEMORY
2433 | SEC_LINKER_CREATED
2434 | SEC_READONLY))
2435 || !bfd_set_section_alignment (dynobj, srelgot, 2))
2436 return false;
2437 }
2438 }
2439
2440 if (h != NULL)
2441 {
51b64d56 2442 if (h->got.refcount == 0)
915e5146 2443 {
915e5146
HPN		 2444 /* Make sure this symbol is output as a dynamic symbol. */
2445 if (h->dynindx == -1)
2446 {
2447 if (!bfd_elf32_link_record_dynamic_symbol (info, h))
2448 return false;
2449 }
2450
2451 /* Allocate space in the .got section. */
2452 sgot->_raw_size += 4;
2453 /* Allocate relocation space. */
2454 srelgot->_raw_size += sizeof (Elf32_External_Rela);
2455 }
51b64d56 2456 h->got.refcount++;
915e5146
HPN		 2457 }
2458 else
2459 {
2460 /* This is a global offset table entry for a local symbol. */
51b64d56 2461 if (local_got_refcounts[r_symndx] == 0)
915e5146 2462 {
915e5146
HPN		 2463 sgot->_raw_size += 4;
2464 if (info->shared)
2465 {
2466 /* If we are generating a shared object, we need to
2467 output a R_CRIS_RELATIVE reloc so that the dynamic
2468 linker can adjust this GOT entry. */
2469 srelgot->_raw_size += sizeof (Elf32_External_Rela);
2470 }
2471 }
51b64d56 2472 local_got_refcounts[r_symndx]++;
915e5146
HPN		 2473 }
2474 break;
2475
2476 case R_CRIS_32_GOTREL:
2477 /* This reference requires a global offset table.
2478 FIXME: The actual refcount isn't used currently; the .got
2479 section can't be removed if there were any references in the
2480 input. */
2481 local_got_refcounts[-1]++;
2482 break;
2483
2484 handle_gotplt_reloc:
2485
2486 case R_CRIS_32_PLT_GOTREL:
2487 /* This reference requires a global offset table. */
2488 local_got_refcounts[-1]++;
2489 /* Fall through. */
2490
2491 case R_CRIS_32_PLT_PCREL:
2492 /* This symbol requires a procedure linkage table entry. We
2493 actually build the entry in adjust_dynamic_symbol,
2494 because this might be a case of linking PIC code which is
2495 never referenced by a dynamic object, in which case we
2496 don't need to generate a procedure linkage table entry
2497 after all. */
2498
2499 /* If this is a local symbol, we resolve it directly without
2500 creating a procedure linkage table entry. */
2501 if (h == NULL)
2502 continue;
2503
2504 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
51b64d56 2505 h->plt.refcount++;
915e5146
HPN		 2506 break;
2507
2508 case R_CRIS_8:
2509 case R_CRIS_16:
2510 case R_CRIS_32:
2511 /* Let's help debug shared library creation. Any of these
2512 relocs can be used in shared libs, but pages containing them
2513 cannot be shared. Don't warn for sections we don't care
2514 about, such as debug sections or non-constant sections. We
2515 can't help tables of (global) function pointers, for example,
2516 though they must be emitted in a data section to avoid having
2517 impure text sections. */
2518 if (info->shared
2519 && (sec->flags & SEC_ALLOC) != 0
2520 && (sec->flags & SEC_READONLY) != 0)
2521 {
2522 /* FIXME: How do we make this optionally a warning only? */
8f615d07
AM		 2523 (*_bfd_error_handler)
2524 (_("%s, section %s:\n relocation %s should not be used in a shared object; recompile with -fPIC"),
2525 bfd_archive_filename (abfd),
2526 sec->name,
2527 cris_elf_howto_table[r_type].name);
915e5146
HPN		 2528 }
2529 /* Fall through. */
2530
2531 case R_CRIS_8_PCREL:
2532 case R_CRIS_16_PCREL:
2533 case R_CRIS_32_PCREL:
2534 if (h != NULL)
2535 {
2536 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
2537
2538 /* Make sure a plt entry is created for this symbol if it
2539 turns out to be a function defined by a dynamic object. */
51b64d56 2540 h->plt.refcount++;
915e5146
HPN		 2541 }
2542
2543 /* If we are creating a shared library and this is not a local
2544 symbol, we need to copy the reloc into the shared library.
2545 However when linking with -Bsymbolic and this is a global
2546 symbol which is defined in an object we are including in the
2547 link (i.e., DEF_REGULAR is set), then we can resolve the
2548 reloc directly. At this point we have not seen all the input
2549 files, so it is possible that DEF_REGULAR is not set now but
2550 will be set later (it is never cleared). In case of a weak
2551 definition, DEF_REGULAR may be cleared later by a strong
2552 definition in a shared library. We account for that
2553 possibility below by storing information in the relocs_copied
2554 field of the hash table entry. A similar situation occurs
2555 when creating shared libraries and symbol visibility changes
2556 render the symbol local. */
2557
2558 /* No need to do anything if we're not creating a shared object. */
2559 if (! info->shared)
2560 break;
2561
2562 /* We don't need to handle relocs into sections not going into
2563 the "real" output. */
2564 if ((sec->flags & SEC_ALLOC) == 0)
2565 break;
2566
2567 /* We can only eliminate PC-relative relocs. */
2568 if (r_type == R_CRIS_8_PCREL
2569 || r_type == R_CRIS_16_PCREL
2570 || r_type == R_CRIS_32_PCREL)
2571 {
2572 /* If the symbol is local, then we can eliminate the reloc. */
2573 if (h == NULL)
2574 break;
2575
2576 /* If this is with -Bsymbolic and the symbol isn't weak, and
2577 is defined by an ordinary object (the ones we include in
2578 this shared library) then we can also eliminate the
2579 reloc. See comment above for more eliminable cases which
2580 we can't identify at this time. */
2581 if (info->symbolic
2582 && h->root.type != bfd_link_hash_defweak
2583 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
2584 break;
2585 }
2586
2587 /* We create a reloc section in dynobj and make room for this
2588 reloc. */
2589 if (sreloc == NULL)
2590 {
2591 const char *name;
2592
2593 name = (bfd_elf_string_from_elf_section
2594 (abfd,
2595 elf_elfheader (abfd)->e_shstrndx,
2596 elf_section_data (sec)->rel_hdr.sh_name));
2597 if (name == NULL)
2598 return false;
2599
2600 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2601 && strcmp (bfd_get_section_name (abfd, sec),
2602 name + 5) == 0);
2603
2604 sreloc = bfd_get_section_by_name (dynobj, name);
2605 if (sreloc == NULL)
2606 {
2607 sreloc = bfd_make_section (dynobj, name);
2608 if (sreloc == NULL
2609 || !bfd_set_section_flags (dynobj, sreloc,
2610 (SEC_ALLOC
2611 | SEC_LOAD
2612 | SEC_HAS_CONTENTS
2613 | SEC_IN_MEMORY
2614 | SEC_LINKER_CREATED
2615 | SEC_READONLY))
2616 || !bfd_set_section_alignment (dynobj, sreloc, 2))
2617 return false;
2618 }
99e4ae17
AJ		 2619 if (sec->flags & SEC_READONLY)
2620 info->flags |= DF_TEXTREL;
915e5146
HPN		 2621 }
2622
2623 sreloc->_raw_size += sizeof (Elf32_External_Rela);
2624
2625 /* If we are linking with -Bsymbolic, we count the number of PC
2626 relative relocations we have entered for this symbol, so that
2627 we can discard them again if the symbol is later defined by a
2628 regular object. We know that h is really a pointer to an
2629 elf_cris_link_hash_entry. */
4d96d128
HPN		 2630 if ((r_type == R_CRIS_8_PCREL
2631 || r_type == R_CRIS_16_PCREL
2632 || r_type == R_CRIS_32_PCREL)
915e5146
HPN		 2633 && info->symbolic)
2634 {
2635 struct elf_cris_link_hash_entry *eh;
2636 struct elf_cris_pcrel_relocs_copied *p;
2637
2638 eh = (struct elf_cris_link_hash_entry *) h;
2639
2640 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
2641 if (p->section == sreloc)
2642 break;
2643
2644 if (p == NULL)
2645 {
2646 p = ((struct elf_cris_pcrel_relocs_copied *)
dc810e39 2647 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
915e5146
HPN		 2648 if (p == NULL)
2649 return false;
2650 p->next = eh->pcrel_relocs_copied;
2651 eh->pcrel_relocs_copied = p;
2652 p->section = sreloc;
2653 p->count = 0;
2654 }
2655
2656 ++p->count;
2657 }
2658 break;
2659
06c15ad7
HPN		 2660 /* This relocation describes the C++ object vtable hierarchy.
2661 Reconstruct it for later use during GC. */
2662 case R_CRIS_GNU_VTINHERIT:
2663 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2664 return false;
2665 break;
a7c10850 2666
06c15ad7
HPN		 2667 /* This relocation describes which C++ vtable entries are actually
2668 used. Record for later use during GC. */
2669 case R_CRIS_GNU_VTENTRY:
2670 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2671 return false;
2672 break;
4d96d128
HPN		 2673
2674 default:
2675 /* Other relocs do not appear here. */
2676 bfd_set_error (bfd_error_bad_value);
2677 return false;
06c15ad7
HPN		 2678 }
2679 }
a7c10850 2680
06c15ad7
HPN		 2681 return true;
2682}
4da81684 2683
915e5146
HPN		 2684/* Set the sizes of the dynamic sections. */
2685
2686static boolean
2687elf_cris_size_dynamic_sections (output_bfd, info)
99e4ae17 2688 bfd *output_bfd ATTRIBUTE_UNUSED;
915e5146
HPN		 2689 struct bfd_link_info *info;
2690{
2691 bfd *dynobj;
2692 asection *s;
2693 boolean plt;
2694 boolean relocs;
915e5146
HPN		 2695
2696 dynobj = elf_hash_table (info)->dynobj;
2697 BFD_ASSERT (dynobj != NULL);
2698
2699 if (elf_hash_table (info)->dynamic_sections_created)
2700 {
2701 /* Set the contents of the .interp section to the interpreter. */
2702 if (!info->shared)
2703 {
2704 s = bfd_get_section_by_name (dynobj, ".interp");
2705 BFD_ASSERT (s != NULL);
2706 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2707 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2708 }
2709 }
2710 else
2711 {
2712 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
2713 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2714 elf_cris_adjust_gotplt_to_got,
2715 (PTR) info);
2716
2717 /* We may have created entries in the .rela.got section.
2718 However, if we are not creating the dynamic sections, we will
2719 not actually use these entries. Reset the size of .rela.got,
2720 which will cause it to get stripped from the output file
2721 below. */
2722 s = bfd_get_section_by_name (dynobj, ".rela.got");
2723 if (s != NULL)
2724 s->_raw_size = 0;
2725 }
2726
2727 /* If this is a -Bsymbolic shared link, then we need to discard all PC
2728 relative relocs against symbols defined in a regular object. We
2729 allocated space for them in the check_relocs routine, but we will not
2730 fill them in in the relocate_section routine. We also discard space
2731 for relocs that have become for local symbols due to symbol
4d96d128
HPN		 2732 visibility changes. For programs, we discard space for relocs for
2733 symbols not referenced by any dynamic object. */
915e5146
HPN		 2734 if (info->shared)
2735 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
4d96d128
HPN		 2736 elf_cris_discard_excess_dso_dynamics,
2737 (PTR) info);
2738 else
2739 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2740 elf_cris_discard_excess_program_dynamics,
915e5146
HPN		 2741 (PTR) info);
2742
2743 /* The check_relocs and adjust_dynamic_symbol entry points have
2744 determined the sizes of the various dynamic sections. Allocate
2745 memory for them. */
2746 plt = false;
2747 relocs = false;
915e5146
HPN		 2748 for (s = dynobj->sections; s != NULL; s = s->next)
2749 {
2750 const char *name;
2751 boolean strip;
2752
2753 if ((s->flags & SEC_LINKER_CREATED) == 0)
2754 continue;
2755
2756 /* It's OK to base decisions on the section name, because none
2757 of the dynobj section names depend upon the input files. */
2758 name = bfd_get_section_name (dynobj, s);
2759
2760 strip = false;
2761
2762 if (strcmp (name, ".plt") == 0)
2763 {
2764 if (s->_raw_size == 0)
2765 {
2766 /* Strip this section if we don't need it; see the
2767 comment below. */
2768 strip = true;
2769 }
2770 else
2771 {
2772 /* Remember whether there is a PLT. */
2773 plt = true;
2774 }
2775 }
2776 else if (strncmp (name, ".rela", 5) == 0)
2777 {
2778 if (s->_raw_size == 0)
2779 {
2780 /* If we don't need this section, strip it from the
2781 output file. This is mostly to handle .rela.bss and
2782 .rela.plt. We must create both sections in
2783 create_dynamic_sections, because they must be created
2784 before the linker maps input sections to output
2785 sections. The linker does that before
2786 adjust_dynamic_symbol is called, and it is that
2787 function which decides whether anything needs to go
2788 into these sections. */
2789 strip = true;
2790 }
2791 else
2792 {
915e5146
HPN		 2793 /* Remember whether there are any reloc sections other
2794 than .rela.plt. */
2795 if (strcmp (name, ".rela.plt") != 0)
915e5146
HPN		 2796 relocs = true;
2797
915e5146
HPN		 2798 /* We use the reloc_count field as a counter if we need
2799 to copy relocs into the output file. */
2800 s->reloc_count = 0;
2801 }
2802 }
2803 else if (strncmp (name, ".got", 4) != 0)
2804 {
2805 /* It's not one of our sections, so don't allocate space. */
2806 continue;
2807 }
2808
2809 if (strip)
2810 {
2811 _bfd_strip_section_from_output (info, s);
2812 continue;
2813 }
2814
2815 /* Allocate memory for the section contents. We use bfd_zalloc here
2816 in case unused entries are not reclaimed before the section's
2817 contents are written out. This should not happen, but this way
2818 if it does, we will not write out garbage. For reloc sections,
2819 this will make entries have the type R_CRIS_NONE. */
2820 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2821 if (s->contents == NULL && s->_raw_size != 0)
2822 return false;
2823 }
2824
2825 if (elf_hash_table (info)->dynamic_sections_created)
2826 {
2827 /* Add some entries to the .dynamic section. We fill in the
2828 values later, in elf_cris_finish_dynamic_sections, but we
2829 must add the entries now so that we get the correct size for
2830 the .dynamic section. The DT_DEBUG entry is filled in by the
2831 dynamic linker and used by the debugger. */
dc810e39
AM		 2832#define add_dynamic_entry(TAG, VAL) \
2833 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2834
915e5146
HPN		 2835 if (!info->shared)
2836 {
dc810e39 2837 if (!add_dynamic_entry (DT_DEBUG, 0))
915e5146
HPN		 2838 return false;
2839 }
2840
2841 if (plt)
2842 {
dc810e39
AM		 2843 if (!add_dynamic_entry (DT_PLTGOT, 0)
2844 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2845 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2846 || !add_dynamic_entry (DT_JMPREL, 0))
915e5146
HPN		 2847 return false;
2848 }
2849
2850 if (relocs)
2851 {
dc810e39
AM		 2852 if (!add_dynamic_entry (DT_RELA, 0)
2853 || !add_dynamic_entry (DT_RELASZ, 0)
2854 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
915e5146
HPN		 2855 return false;
2856 }
2857
99e4ae17 2858 if ((info->flags & DF_TEXTREL) != 0)
915e5146 2859 {
dc810e39 2860 if (!add_dynamic_entry (DT_TEXTREL, 0))
915e5146
HPN		 2861 return false;
2862 info->flags |= DF_TEXTREL;
2863 }
2864 }
dc810e39 2865#undef add_dynamic_entry
915e5146
HPN		 2866
2867 return true;
2868}
2869
2870/* This function is called via elf_cris_link_hash_traverse if we are
2871 creating a shared object. In the -Bsymbolic case, it discards the
2872 space allocated to copy PC relative relocs against symbols which
2873 are defined in regular objects. For the normal non-symbolic case,
2874 we also discard space for relocs that have become local due to
2875 symbol visibility changes. We allocated space for them in the
2876 check_relocs routine, but we won't fill them in in the
2877 relocate_section routine. */
2878
2879static boolean
4d96d128 2880elf_cris_discard_excess_dso_dynamics (h, inf)
915e5146
HPN		 2881 struct elf_cris_link_hash_entry *h;
2882 PTR inf;
2883{
2884 struct elf_cris_pcrel_relocs_copied *s;
2885 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2886
e92d460e
AM		 2887 if (h->root.root.type == bfd_link_hash_warning)
2888 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2889
915e5146
HPN		 2890 /* If a symbol has been forced local or we have found a regular
2891 definition for the symbolic link case, then we won't be needing
2892 any relocs. */
2893 if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
2894 && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2895 || info->symbolic))
2896 {
2897 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
4d96d128
HPN		 2898 s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela);
2899 }
2900
2901 return true;
2902}
2903
2904/* This function is called via elf_cris_link_hash_traverse if we are *not*
2905 creating a shared object. We discard space for relocs for symbols put
2906 in the .got, but which we found we do not have to resolve at run-time. */
2907
2908static boolean
2909elf_cris_discard_excess_program_dynamics (h, inf)
2910 struct elf_cris_link_hash_entry *h;
2911 PTR inf;
2912{
2913 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2914
e92d460e
AM		 2915 if (h->root.root.type == bfd_link_hash_warning)
2916 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2917
4d96d128
HPN		 2918 /* If we're not creating a shared library and have a symbol which is
2919 referred to by .got references, but the symbol is defined locally,
2920 (or rather, not referred to by a DSO and not defined by a DSO) then
2921 lose the reloc for the .got (don't allocate room for it). */
2922 if ((h->root.elf_link_hash_flags
2923 & (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_DEF_DYNAMIC)) == 0)
2924 {
2925 if (h->root.got.refcount > 0
2926 /* The size of this section is only valid and in sync with the
2927 various reference counts if we do dynamic; don't decrement it
2928 otherwise. */
2929 && elf_hash_table (info)->dynamic_sections_created)
2930 {
2931 bfd *dynobj = elf_hash_table (info)->dynobj;
2932 asection *srelgot;
2933
2934 BFD_ASSERT (dynobj != NULL);
99c79b2e 2935
4d96d128
HPN		 2936 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2937
2938 BFD_ASSERT (srelgot != NULL);
2939
2940 srelgot->_raw_size -= sizeof (Elf32_External_Rela);
2941 }
2942
2943 /* If the locally-defined symbol isn't used by a DSO, then we don't
2944 have to export it as a dynamic symbol. This was already done for
2945 functions; doing this for all symbols would presumably not
e5dfef09
HPN		 2946 introduce new problems. Of course we don't do this if we're
2947 exporting all dynamic symbols. */
2948 if (! info->export_dynamic)
2949 {
2950 h->root.dynindx = -1;
2951 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2952 h->root.dynstr_index);
2953 }
915e5146
HPN		 2954 }
2955
2956 return true;
2957}
2958
2959/* Reject a file depending on presence and expectation of prefixed
2960 underscores on symbols. */
4da81684
HPN		 2961
2962static boolean
2963cris_elf_object_p (abfd)
2964 bfd *abfd;
2965{
2966 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
2967 return (bfd_get_symbol_leading_char (abfd) == '_');
2968 else
2969 return (bfd_get_symbol_leading_char (abfd) == 0);
2970}
2971
2972/* Mark presence or absence of leading underscore. */
2973
2974static void
2975cris_elf_final_write_processing (abfd, linker)
2976 bfd *abfd;
2977 boolean linker ATTRIBUTE_UNUSED;
2978{
2979 if (bfd_get_symbol_leading_char (abfd) == '_')
2980 elf_elfheader (abfd)->e_flags |= EF_CRIS_UNDERSCORE;
2981 else
2982 elf_elfheader (abfd)->e_flags &= ~EF_CRIS_UNDERSCORE;
2983}
2984
2985/* Display the flags field. */
2986
2987static boolean
2988cris_elf_print_private_bfd_data (abfd, ptr)
2989 bfd *abfd;
2990 PTR ptr;
2991{
2992 FILE *file = (FILE *) ptr;
2993
2994 BFD_ASSERT (abfd != NULL && ptr != NULL)
2995
2996 _bfd_elf_print_private_bfd_data (abfd, ptr);
2997
2998 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
2999
3000 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
3001 fprintf (file, _(" [symbols have a _ prefix]"));
3002
3003 fputc ('\n', file);
3004 return true;
3005}
3006
3007/* Don't mix files with and without a leading underscore. */
3008
3009static boolean
3010cris_elf_merge_private_bfd_data (ibfd, obfd)
3011 bfd *ibfd;
3012 bfd *obfd;
3013{
3014 flagword old_flags, new_flags;
3015
3016 if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
3017 return false;
3018
3019 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3020 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3021 return true;
3022
3023 if (! elf_flags_init (obfd))
3024 {
3025 /* This happens when ld starts out with a 'blank' output file. */
3026 elf_flags_init (obfd) = true;
3027
3028 /* Set flags according to current bfd_target. */
3029 cris_elf_final_write_processing (obfd, false);
3030 }
3031
3032 old_flags = elf_elfheader (obfd)->e_flags;
3033 new_flags = elf_elfheader (ibfd)->e_flags;
3034
3035 /* Is this good or bad? We'll follow with other excluding flags. */
3036 if ((old_flags & EF_CRIS_UNDERSCORE) != (new_flags & EF_CRIS_UNDERSCORE))
3037 {
3038 (*_bfd_error_handler)
3039 ((new_flags & EF_CRIS_UNDERSCORE)
3040 ? _("%s: uses _-prefixed symbols, but writing file with non-prefixed symbols")
3041 : _("%s: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
8f615d07 3042 bfd_archive_filename (ibfd));
4da81684
HPN		 3043 bfd_set_error (bfd_error_bad_value);
3044 return false;
3045 }
3046
3047 return true;
3048}
99e4ae17
AJ		 3049
3050
3051static enum elf_reloc_type_class
f51e552e
AM		 3052elf_cris_reloc_type_class (rela)
3053 const Elf_Internal_Rela *rela;
99e4ae17 3054{
f51e552e 3055 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ		 3056 {
3057 case R_CRIS_RELATIVE:
3058 return reloc_class_relative;
3059 case R_CRIS_JUMP_SLOT:
3060 return reloc_class_plt;
3061 case R_CRIS_COPY:
3062 return reloc_class_copy;
3063 default:
3064 return reloc_class_normal;
3065 }
3066}
06c15ad7
HPN		 3067\f
3068#define ELF_ARCH bfd_arch_cris
3069#define ELF_MACHINE_CODE EM_CRIS
3070#define ELF_MAXPAGESIZE 0x2000
3071
3072#define TARGET_LITTLE_SYM bfd_elf32_cris_vec
3073#define TARGET_LITTLE_NAME "elf32-cris"
4da81684 3074#define elf_symbol_leading_char 0
06c15ad7
HPN		 3075
3076#define elf_info_to_howto_rel NULL
3077#define elf_info_to_howto cris_info_to_howto_rela
3078#define elf_backend_relocate_section cris_elf_relocate_section
3079#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
3080#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
3081#define elf_backend_check_relocs cris_elf_check_relocs
72209a1f
HPN		 3082#define elf_backend_grok_prstatus cris_elf_grok_prstatus
3083#define elf_backend_grok_psinfo cris_elf_grok_psinfo
06c15ad7
HPN		 3084
3085#define elf_backend_can_gc_sections 1
51b64d56 3086#define elf_backend_can_refcount 1
06c15ad7 3087
4da81684
HPN		 3088#define elf_backend_object_p cris_elf_object_p
3089#define elf_backend_final_write_processing \
3090 cris_elf_final_write_processing
3091#define bfd_elf32_bfd_print_private_bfd_data \
3092 cris_elf_print_private_bfd_data
3093#define bfd_elf32_bfd_merge_private_bfd_data \
3094 cris_elf_merge_private_bfd_data
3095
06c15ad7
HPN		 3096#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
3097
915e5146
HPN		 3098#define bfd_elf32_bfd_link_hash_table_create \
3099 elf_cris_link_hash_table_create
3100#define elf_backend_adjust_dynamic_symbol \
3101 elf_cris_adjust_dynamic_symbol
3102#define elf_backend_size_dynamic_sections \
3103 elf_cris_size_dynamic_sections
3104#define elf_backend_finish_dynamic_symbol \
3105 elf_cris_finish_dynamic_symbol
3106#define elf_backend_finish_dynamic_sections \
3107 elf_cris_finish_dynamic_sections
3108#define elf_backend_create_dynamic_sections \
3109 _bfd_elf_create_dynamic_sections
3110#define bfd_elf32_bfd_final_link \
3111 _bfd_elf32_gc_common_final_link
3112#define elf_backend_hide_symbol elf_cris_hide_symbol
99e4ae17 3113#define elf_backend_reloc_type_class elf_cris_reloc_type_class
915e5146
HPN		 3114
3115#define elf_backend_want_got_plt 1
3116#define elf_backend_plt_readonly 1
3117#define elf_backend_want_plt_sym 0
3118#define elf_backend_got_header_size 12
3119#define elf_backend_plt_header_size PLT_ENTRY_SIZE
3120
06c15ad7
HPN		 3121/* Later, we my want to optimize RELA entries into REL entries for dynamic
3122 linking and libraries (if it's a win of any significance). Until then,
3123 take the easy route. */
3124#define elf_backend_may_use_rel_p 0
3125#define elf_backend_may_use_rela_p 1
3126
3127#include "elf32-target.h"
4da81684
HPN		 3128
3129#define INCLUDED_TARGET_FILE
3130
3131#undef TARGET_LITTLE_SYM
3132#undef TARGET_LITTLE_NAME
3133#undef elf_symbol_leading_char
3134
3135#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
3136#define TARGET_LITTLE_NAME "elf32-us-cris"
3137#define elf_symbol_leading_char '_'
3138
3139#include "elf32-target.h"
GDB Binutils - Deliverables
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