* elf32-cris.c (cris_elf_relocate_section): <case
[deliverable/binutils-gdb.git] / bfd / elf32-cris.c
1 /* CRIS-specific support for 32-bit ELF.
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3 Free Software Foundation, Inc.
4 Contributed by Axis Communications AB.
5 Written by Hans-Peter Nilsson, based on elf32-fr30.c
6 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
7
8 This file is part of BFD, the Binary File Descriptor library.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23 MA 02110-1301, USA. */
24
25 #include "sysdep.h"
26 #include "bfd.h"
27 #include "libbfd.h"
28 #include "elf-bfd.h"
29 #include "elf/cris.h"
30 #include <limits.h>
31
32 /* Forward declarations. */
33 static reloc_howto_type * cris_reloc_type_lookup
34 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
35
36 static void cris_info_to_howto_rela
37 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
38
39 static bfd_reloc_status_type cris_elf_pcrel_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
41
42 static bfd_boolean cris_elf_grok_prstatus
43 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
44
45 static bfd_boolean cris_elf_grok_psinfo
46 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
47
48 static bfd_boolean cris_elf_relocate_section
49 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
50 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
51
52 static bfd_reloc_status_type cris_final_link_relocate
53 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
54 Elf_Internal_Rela *, bfd_vma));
55
56 static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
57
58 static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
59
60 static bfd_boolean cris_elf_set_mach_from_flags
61 PARAMS ((bfd *, unsigned long int));
62
63 static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
64
65 static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
66 static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
67
68 struct elf_cris_link_hash_entry;
69 static bfd_boolean elf_cris_discard_excess_dso_dynamics
70 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
71 static bfd_boolean elf_cris_discard_excess_program_dynamics
72 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
73 static bfd_boolean elf_cris_adjust_gotplt_to_got
74 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
75 static bfd_boolean elf_cris_try_fold_plt_to_got
76 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
77 static struct bfd_hash_entry *elf_cris_link_hash_newfunc
78 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
79 static struct bfd_link_hash_table *elf_cris_link_hash_table_create
80 PARAMS ((bfd *));
81 static bfd_boolean elf_cris_adjust_dynamic_symbol
82 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
83 static bfd_boolean cris_elf_check_relocs
84 PARAMS ((bfd *, struct bfd_link_info *, asection *,
85 const Elf_Internal_Rela *));
86
87 static bfd_boolean elf_cris_size_dynamic_sections
88 PARAMS ((bfd *, struct bfd_link_info *));
89 static bfd_boolean elf_cris_finish_dynamic_symbol
90 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
91 Elf_Internal_Sym *));
92 static bfd_boolean elf_cris_finish_dynamic_sections
93 PARAMS ((bfd *, struct bfd_link_info *));
94 static void elf_cris_hide_symbol
95 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
96 static enum elf_reloc_type_class elf_cris_reloc_type_class
97 PARAMS ((const Elf_Internal_Rela *));
98
99 static reloc_howto_type cris_elf_howto_table [] =
100 {
101 /* This reloc does nothing. */
102 HOWTO (R_CRIS_NONE, /* type */
103 0, /* rightshift */
104 2, /* size (0 = byte, 1 = short, 2 = long) */
105 32, /* bitsize */
106 FALSE, /* pc_relative */
107 0, /* bitpos */
108 complain_overflow_bitfield, /* complain_on_overflow */
109 bfd_elf_generic_reloc, /* special_function */
110 "R_CRIS_NONE", /* name */
111 FALSE, /* partial_inplace */
112 0, /* src_mask */
113 0, /* dst_mask */
114 FALSE), /* pcrel_offset */
115
116 /* An 8 bit absolute relocation. */
117 HOWTO (R_CRIS_8, /* type */
118 0, /* rightshift */
119 0, /* size (0 = byte, 1 = short, 2 = long) */
120 8, /* bitsize */
121 FALSE, /* pc_relative */
122 0, /* bitpos */
123 complain_overflow_bitfield, /* complain_on_overflow */
124 bfd_elf_generic_reloc, /* special_function */
125 "R_CRIS_8", /* name */
126 FALSE, /* partial_inplace */
127 0x0000, /* src_mask */
128 0x00ff, /* dst_mask */
129 FALSE), /* pcrel_offset */
130
131 /* A 16 bit absolute relocation. */
132 HOWTO (R_CRIS_16, /* type */
133 0, /* rightshift */
134 1, /* size (0 = byte, 1 = short, 2 = long) */
135 16, /* bitsize */
136 FALSE, /* pc_relative */
137 0, /* bitpos */
138 complain_overflow_bitfield, /* complain_on_overflow */
139 bfd_elf_generic_reloc, /* special_function */
140 "R_CRIS_16", /* name */
141 FALSE, /* partial_inplace */
142 0x00000000, /* src_mask */
143 0x0000ffff, /* dst_mask */
144 FALSE), /* pcrel_offset */
145
146 /* A 32 bit absolute relocation. */
147 HOWTO (R_CRIS_32, /* type */
148 0, /* rightshift */
149 2, /* size (0 = byte, 1 = short, 2 = long) */
150 32, /* bitsize */
151 FALSE, /* pc_relative */
152 0, /* bitpos */
153 /* We don't want overflow complaints for 64-bit vma builds
154 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
155 32-bit ELF) where sym=0xc0001234.
156 Don't do this for the PIC relocs, as we don't expect to
157 see them with large offsets. */
158 complain_overflow_dont, /* complain_on_overflow */
159 bfd_elf_generic_reloc, /* special_function */
160 "R_CRIS_32", /* name */
161 FALSE, /* partial_inplace */
162 0x00000000, /* src_mask */
163 0xffffffff, /* dst_mask */
164 FALSE), /* pcrel_offset */
165
166 /* An 8 bit PC-relative relocation. */
167 HOWTO (R_CRIS_8_PCREL, /* type */
168 0, /* rightshift */
169 0, /* size (0 = byte, 1 = short, 2 = long) */
170 8, /* bitsize */
171 TRUE, /* pc_relative */
172 0, /* bitpos */
173 complain_overflow_bitfield, /* complain_on_overflow */
174 cris_elf_pcrel_reloc, /* special_function */
175 "R_CRIS_8_PCREL", /* name */
176 FALSE, /* partial_inplace */
177 0x0000, /* src_mask */
178 0x00ff, /* dst_mask */
179 TRUE), /* pcrel_offset */
180
181 /* A 16 bit PC-relative relocation. */
182 HOWTO (R_CRIS_16_PCREL, /* type */
183 0, /* rightshift */
184 1, /* size (0 = byte, 1 = short, 2 = long) */
185 16, /* bitsize */
186 TRUE, /* pc_relative */
187 0, /* bitpos */
188 complain_overflow_bitfield, /* complain_on_overflow */
189 cris_elf_pcrel_reloc, /* special_function */
190 "R_CRIS_16_PCREL", /* name */
191 FALSE, /* partial_inplace */
192 0x00000000, /* src_mask */
193 0x0000ffff, /* dst_mask */
194 TRUE), /* pcrel_offset */
195
196 /* A 32 bit PC-relative relocation. */
197 HOWTO (R_CRIS_32_PCREL, /* type */
198 0, /* rightshift */
199 2, /* size (0 = byte, 1 = short, 2 = long) */
200 32, /* bitsize */
201 TRUE, /* pc_relative */
202 0, /* bitpos */
203 complain_overflow_bitfield, /* complain_on_overflow */
204 cris_elf_pcrel_reloc, /* special_function */
205 "R_CRIS_32_PCREL", /* name */
206 FALSE, /* partial_inplace */
207 0x00000000, /* src_mask */
208 0xffffffff, /* dst_mask */
209 TRUE), /* pcrel_offset */
210
211 /* GNU extension to record C++ vtable hierarchy. */
212 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
213 0, /* rightshift */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
215 0, /* bitsize */
216 FALSE, /* pc_relative */
217 0, /* bitpos */
218 complain_overflow_dont, /* complain_on_overflow */
219 NULL, /* special_function */
220 "R_CRIS_GNU_VTINHERIT", /* name */
221 FALSE, /* partial_inplace */
222 0, /* src_mask */
223 0, /* dst_mask */
224 FALSE), /* pcrel_offset */
225
226 /* GNU extension to record C++ vtable member usage. */
227 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
228 0, /* rightshift */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
230 0, /* bitsize */
231 FALSE, /* pc_relative */
232 0, /* bitpos */
233 complain_overflow_dont, /* complain_on_overflow */
234 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
235 "R_CRIS_GNU_VTENTRY", /* name */
236 FALSE, /* partial_inplace */
237 0, /* src_mask */
238 0, /* dst_mask */
239 FALSE), /* pcrel_offset */
240
241 /* This is used only by the dynamic linker. The symbol should exist
242 both in the object being run and in some shared library. The
243 dynamic linker copies the data addressed by the symbol from the
244 shared library into the object, because the object being
245 run has to have the data at some particular address. */
246 HOWTO (R_CRIS_COPY, /* type */
247 0, /* rightshift */
248 2, /* size (0 = byte, 1 = short, 2 = long) */
249 32, /* bitsize */
250 FALSE, /* pc_relative */
251 0, /* bitpos */
252 complain_overflow_bitfield, /* complain_on_overflow */
253 bfd_elf_generic_reloc, /* special_function */
254 "R_CRIS_COPY", /* name */
255 FALSE, /* partial_inplace */
256 0, /* src_mask */
257 0, /* dst_mask */
258 FALSE), /* pcrel_offset */
259
260 /* Like R_CRIS_32, but used when setting global offset table entries. */
261 HOWTO (R_CRIS_GLOB_DAT, /* type */
262 0, /* rightshift */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
264 32, /* bitsize */
265 FALSE, /* pc_relative */
266 0, /* bitpos */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_CRIS_GLOB_DAT", /* name */
270 FALSE, /* partial_inplace */
271 0, /* src_mask */
272 0xffffffff, /* dst_mask */
273 FALSE), /* pcrel_offset */
274
275 /* Marks a procedure linkage table entry for a symbol. */
276 HOWTO (R_CRIS_JUMP_SLOT, /* type */
277 0, /* rightshift */
278 2, /* size (0 = byte, 1 = short, 2 = long) */
279 32, /* bitsize */
280 FALSE, /* pc_relative */
281 0, /* bitpos */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_CRIS_JUMP_SLOT", /* name */
285 FALSE, /* partial_inplace */
286 0, /* src_mask */
287 0, /* dst_mask */
288 FALSE), /* pcrel_offset */
289
290 /* Used only by the dynamic linker. When the object is run, this
291 longword is set to the load address of the object, plus the
292 addend. */
293 HOWTO (R_CRIS_RELATIVE, /* type */
294 0, /* rightshift */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
296 32, /* bitsize */
297 FALSE, /* pc_relative */
298 0, /* bitpos */
299 complain_overflow_bitfield, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_CRIS_RELATIVE", /* name */
302 FALSE, /* partial_inplace */
303 0, /* src_mask */
304 0xffffffff, /* dst_mask */
305 FALSE), /* pcrel_offset */
306
307 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
308 HOWTO (R_CRIS_16_GOT, /* type */
309 0, /* rightshift */
310 1, /* size (0 = byte, 1 = short, 2 = long) */
311 16, /* bitsize */
312 FALSE, /* pc_relative */
313 0, /* bitpos */
314 complain_overflow_bitfield, /* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_CRIS_16_GOT", /* name */
317 FALSE, /* partial_inplace */
318 0, /* src_mask */
319 0xffff, /* dst_mask */
320 FALSE), /* pcrel_offset */
321
322 HOWTO (R_CRIS_32_GOT, /* type */
323 0, /* rightshift */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
325 32, /* bitsize */
326 FALSE, /* pc_relative */
327 0, /* bitpos */
328 complain_overflow_bitfield, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_CRIS_32_GOT", /* name */
331 FALSE, /* partial_inplace */
332 0, /* src_mask */
333 0xffffffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
335
336 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
337 the GOT table for the symbol. */
338 HOWTO (R_CRIS_16_GOTPLT, /* type */
339 0, /* rightshift */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
341 16, /* bitsize */
342 FALSE, /* pc_relative */
343 0, /* bitpos */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* special_function */
346 "R_CRIS_16_GOTPLT", /* name */
347 FALSE, /* partial_inplace */
348 0, /* src_mask */
349 0xffff, /* dst_mask */
350 FALSE), /* pcrel_offset */
351
352 HOWTO (R_CRIS_32_GOTPLT, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 32, /* bitsize */
356 FALSE, /* pc_relative */
357 0, /* bitpos */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_CRIS_32_GOTPLT", /* name */
361 FALSE, /* partial_inplace */
362 0, /* src_mask */
363 0xffffffff, /* dst_mask */
364 FALSE), /* pcrel_offset */
365
366 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
367 be necessary. */
368 HOWTO (R_CRIS_32_GOTREL, /* type */
369 0, /* rightshift */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
371 32, /* bitsize */
372 FALSE, /* pc_relative */
373 0, /* bitpos */
374 complain_overflow_bitfield, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_CRIS_32_GOTREL", /* name */
377 FALSE, /* partial_inplace */
378 0, /* src_mask */
379 0xffffffff, /* dst_mask */
380 FALSE), /* pcrel_offset */
381
382 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
383 to create PLT entry for symbol. */
384 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 32, /* bitsize */
388 FALSE, /* pc_relative */
389 0, /* bitpos */
390 complain_overflow_bitfield, /* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_CRIS_32_PLT_GOTREL", /* name */
393 FALSE, /* partial_inplace */
394 0, /* src_mask */
395 0xffffffff, /* dst_mask */
396 FALSE), /* pcrel_offset */
397
398 /* A 32-bit offset from PC (location after the relocation) + addend to
399 entry for this symbol in PLT and request to create PLT entry for
400 symbol. */
401 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 32, /* bitsize */
405 TRUE, /* pc_relative */
406 0, /* bitpos */
407 complain_overflow_bitfield, /* complain_on_overflow */
408 cris_elf_pcrel_reloc, /* special_function */
409 "R_CRIS_32_PLT_PCREL", /* name */
410 FALSE, /* partial_inplace */
411 0, /* src_mask */
412 0xffffffff, /* dst_mask */
413 TRUE), /* pcrel_offset */
414
415 /* We don't handle these in any special manner and cross-format
416 linking is not supported; just recognize them enough to pass them
417 around. FIXME: do the same for most PIC relocs and add sanity
418 tests to actually refuse gracefully to handle these and PIC
419 relocs for cross-format linking. */
420 #define TLSHOWTO32(name) \
421 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
422 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
423 #define TLSHOWTO16X(name, X) \
424 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
425 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
426 #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
427 #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
428
429 TLSHOWTO32 (R_CRIS_32_GOT_GD),
430 TLSHOWTO16 (R_CRIS_16_GOT_GD),
431 TLSHOWTO32 (R_CRIS_32_GD),
432 TLSHOWTO32 (R_CRIS_DTP),
433 TLSHOWTO32 (R_CRIS_32_DTPREL),
434 TLSHOWTO16S (R_CRIS_16_DTPREL),
435 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
436 TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
437 TLSHOWTO32 (R_CRIS_32_TPREL),
438 TLSHOWTO16S (R_CRIS_16_TPREL),
439 TLSHOWTO32 (R_CRIS_DTPMOD),
440 TLSHOWTO32 (R_CRIS_32_IE)
441 };
442 \f
443 /* Map BFD reloc types to CRIS ELF reloc types. */
444
445 struct cris_reloc_map
446 {
447 bfd_reloc_code_real_type bfd_reloc_val;
448 unsigned int cris_reloc_val;
449 };
450
451 static const struct cris_reloc_map cris_reloc_map [] =
452 {
453 { BFD_RELOC_NONE, R_CRIS_NONE },
454 { BFD_RELOC_8, R_CRIS_8 },
455 { BFD_RELOC_16, R_CRIS_16 },
456 { BFD_RELOC_32, R_CRIS_32 },
457 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
458 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
459 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
460 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
461 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
462 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
463 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
464 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
465 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
466 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
467 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
468 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
469 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
470 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
471 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
472 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
473 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
474 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
475 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
476 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
477 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
478 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
479 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
480 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
481 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
482 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
483 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
484 { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
485 };
486
487 static reloc_howto_type *
488 cris_reloc_type_lookup (abfd, code)
489 bfd * abfd ATTRIBUTE_UNUSED;
490 bfd_reloc_code_real_type code;
491 {
492 unsigned int i;
493
494 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
495 if (cris_reloc_map [i].bfd_reloc_val == code)
496 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
497
498 return NULL;
499 }
500
501 static reloc_howto_type *
502 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
503 {
504 unsigned int i;
505
506 for (i = 0;
507 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
508 i++)
509 if (cris_elf_howto_table[i].name != NULL
510 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
511 return &cris_elf_howto_table[i];
512
513 return NULL;
514 }
515
516 /* Set the howto pointer for an CRIS ELF reloc. */
517
518 static void
519 cris_info_to_howto_rela (abfd, cache_ptr, dst)
520 bfd * abfd ATTRIBUTE_UNUSED;
521 arelent * cache_ptr;
522 Elf_Internal_Rela * dst;
523 {
524 enum elf_cris_reloc_type r_type;
525
526 r_type = ELF32_R_TYPE (dst->r_info);
527 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
528 cache_ptr->howto = & cris_elf_howto_table [r_type];
529 }
530
531 bfd_reloc_status_type
532 cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
533 output_bfd, error_message)
534 bfd *abfd ATTRIBUTE_UNUSED;
535 arelent *reloc_entry;
536 asymbol *symbol;
537 PTR data ATTRIBUTE_UNUSED;
538 asection *input_section;
539 bfd *output_bfd;
540 char **error_message ATTRIBUTE_UNUSED;
541 {
542 /* By default (using only bfd_elf_generic_reloc when linking to
543 non-ELF formats) PC-relative relocs are relative to the beginning
544 of the reloc. CRIS PC-relative relocs are relative to the position
545 *after* the reloc because that's what pre-CRISv32 PC points to
546 after reading an insn field with that reloc. (For CRISv32, PC is
547 actually relative to the start of the insn, but we keep the old
548 definition.) Still, we use as much generic machinery as we can.
549
550 Only adjust when doing a final link. */
551 if (output_bfd == (bfd *) NULL)
552 reloc_entry->addend -= 1 << reloc_entry->howto->size;
553
554 return
555 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
556 input_section, output_bfd, error_message);
557 }
558 \f
559 /* Support for core dump NOTE sections.
560 The slightly unintuitive code layout is an attempt to keep at least
561 some similarities with other ports, hoping to simplify general
562 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
563
564 static bfd_boolean
565 cris_elf_grok_prstatus (abfd, note)
566 bfd *abfd;
567 Elf_Internal_Note *note;
568 {
569 int offset;
570 size_t size;
571
572 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
573 switch (note->descsz)
574 {
575 default:
576 return FALSE;
577
578 case 202: /* Linux/CRISv32 */
579 /* pr_cursig */
580 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
581
582 /* pr_pid */
583 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
584
585 /* pr_reg */
586 offset = 70;
587 size = 128;
588
589 break;
590 }
591 else
592 switch (note->descsz)
593 {
594 default:
595 return FALSE;
596
597 case 214: /* Linux/CRIS */
598 /* pr_cursig */
599 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
600
601 /* pr_pid */
602 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
603
604 /* pr_reg */
605 offset = 70;
606 size = 140;
607
608 break;
609 }
610
611 /* Make a ".reg/999" section. */
612 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
613 size, note->descpos + offset);
614 }
615
616 static bfd_boolean
617 cris_elf_grok_psinfo (abfd, note)
618 bfd *abfd;
619 Elf_Internal_Note *note;
620 {
621 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
622 switch (note->descsz)
623 {
624 default:
625 return FALSE;
626
627 case 124: /* Linux/CRISv32 elf_prpsinfo */
628 elf_tdata (abfd)->core_program
629 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
630 elf_tdata (abfd)->core_command
631 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
632 }
633 else
634 switch (note->descsz)
635 {
636 default:
637 return FALSE;
638
639 case 124: /* Linux/CRIS elf_prpsinfo */
640 elf_tdata (abfd)->core_program
641 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
642 elf_tdata (abfd)->core_command
643 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
644 }
645
646 /* Note that for some reason, a spurious space is tacked
647 onto the end of the args in some (at least one anyway)
648 implementations, so strip it off if it exists. */
649
650 {
651 char *command = elf_tdata (abfd)->core_command;
652 int n = strlen (command);
653
654 if (0 < n && command[n - 1] == ' ')
655 command[n - 1] = '\0';
656 }
657
658 return TRUE;
659 }
660 \f
661 /* The name of the dynamic interpreter. This is put in the .interp
662 section. */
663
664 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
665
666 /* The size in bytes of an entry in the procedure linkage table. */
667
668 #define PLT_ENTRY_SIZE 20
669 #define PLT_ENTRY_SIZE_V32 26
670
671 /* The first entry in an absolute procedure linkage table looks like this. */
672
673 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
674 {
675 0xfc, 0xe1,
676 0x7e, 0x7e, /* push mof. */
677 0x7f, 0x0d, /* (dip [pc+]) */
678 0, 0, 0, 0, /* Replaced with address of .got + 4. */
679 0x30, 0x7a, /* move [...],mof */
680 0x7f, 0x0d, /* (dip [pc+]) */
681 0, 0, 0, 0, /* Replaced with address of .got + 8. */
682 0x30, 0x09 /* jump [...] */
683 };
684
685 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
686 {
687 0x84, 0xe2, /* subq 4,$sp */
688 0x6f, 0xfe, /* move.d 0,$acr */
689 0, 0, 0, 0, /* Replaced by address of .got + 4. */
690 0x7e, 0x7a, /* move $mof,[$sp] */
691 0x3f, 0x7a, /* move [$acr],$mof */
692 0x04, 0xf2, /* addq 4,acr */
693 0x6f, 0xfa, /* move.d [$acr],$acr */
694 0xbf, 0x09, /* jump $acr */
695 0xb0, 0x05, /* nop */
696 0, 0 /* Pad out to 26 bytes. */
697 };
698
699 /* Subsequent entries in an absolute procedure linkage table look like
700 this. */
701
702 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
703 {
704 0x7f, 0x0d, /* (dip [pc+]) */
705 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
706 0x30, 0x09, /* jump [...] */
707 0x3f, 0x7e, /* move [pc+],mof */
708 0, 0, 0, 0, /* Replaced with offset into relocation table. */
709 0x2f, 0xfe, /* add.d [pc+],pc */
710 0xec, 0xff,
711 0xff, 0xff /* Replaced with offset to start of .plt. */
712 };
713
714 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
715 {
716 0x6f, 0xfe, /* move.d 0,$acr */
717 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
718 0x6f, 0xfa, /* move.d [$acr],$acr */
719 0xbf, 0x09, /* jump $acr */
720 0xb0, 0x05, /* nop */
721 0x3f, 0x7e, /* move 0,mof */
722 0, 0, 0, 0, /* Replaced with offset into relocation table. */
723 0xbf, 0x0e, /* ba start_of_plt0_entry */
724 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
725 0xb0, 0x05 /* nop */
726 };
727
728 /* The first entry in a PIC procedure linkage table looks like this. */
729
730 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
731 {
732 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
733 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
734 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
735 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
736 };
737
738 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
739 {
740 0x84, 0xe2, /* subq 4,$sp */
741 0x04, 0x01, /* addoq 4,$r0,$acr */
742 0x7e, 0x7a, /* move $mof,[$sp] */
743 0x3f, 0x7a, /* move [$acr],$mof */
744 0x04, 0xf2, /* addq 4,$acr */
745 0x6f, 0xfa, /* move.d [$acr],$acr */
746 0xbf, 0x09, /* jump $acr */
747 0xb0, 0x05, /* nop */
748 0, 0, /* Pad out to 26 bytes. */
749 0, 0, 0, 0,
750 0, 0, 0, 0
751 };
752
753 /* Subsequent entries in a PIC procedure linkage table look like this. */
754
755 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
756 {
757 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
758 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
759 0x30, 0x09, /* jump [...] */
760 0x3f, 0x7e, /* move [pc+],mof */
761 0, 0, 0, 0, /* Replaced with offset into relocation table. */
762 0x2f, 0xfe, /* add.d [pc+],pc */
763 0xec, 0xff, /* Replaced with offset to start of .plt. */
764 0xff, 0xff
765 };
766
767 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
768 {
769 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
770 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
771 0x6f, 0xfa, /* move.d [$acr],$acr */
772 0xbf, 0x09, /* jump $acr */
773 0xb0, 0x05, /* nop */
774 0x3f, 0x7e, /* move relocoffs,$mof */
775 0, 0, 0, 0, /* Replaced with offset into relocation table. */
776 0xbf, 0x0e, /* ba start_of_plt */
777 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
778 0xb0, 0x05 /* nop */
779 };
780 \f
781 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
782 (and most other PIC/shlib stuff). Check that we don't drift away
783 without reason.
784
785 The CRIS linker, like the m68k and i386 linkers (and probably the rest
786 too) needs to keep track of the number of relocs that it decides to
787 copy in check_relocs for each symbol. This is so that it can discard
788 PC relative relocs if it doesn't need them when linking with
789 -Bsymbolic. We store the information in a field extending the regular
790 ELF linker hash table. */
791
792 /* This structure keeps track of the number of PC relative relocs we have
793 copied for a given symbol. */
794
795 struct elf_cris_pcrel_relocs_copied
796 {
797 /* Next section. */
798 struct elf_cris_pcrel_relocs_copied *next;
799
800 /* A section in dynobj. */
801 asection *section;
802
803 /* Number of relocs copied in this section. */
804 bfd_size_type count;
805
806 /* Example of reloc being copied, for message. */
807 enum elf_cris_reloc_type r_type;
808 };
809
810 /* CRIS ELF linker hash entry. */
811
812 struct elf_cris_link_hash_entry
813 {
814 struct elf_link_hash_entry root;
815
816 /* Number of PC relative relocs copied for this symbol. */
817 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
818
819 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
820 both a general GOT and a PLT-specific GOT entry for the same symbol,
821 when it is referenced both as a function and as a function pointer.
822
823 Number of GOTPLT references for a function. */
824 bfd_signed_vma gotplt_refcount;
825
826 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
827 (zero is never used as an index). FIXME: We should be able to fold
828 this with gotplt_refcount in a union, like the got and plt unions in
829 elf_link_hash_entry. */
830 bfd_size_type gotplt_offset;
831
832 /* The root.got.refcount is the sum of the regular reference counts
833 (this) and those members below. We have to keep a separate count
834 to track when we've found the first (or last) reference to a
835 regular got entry. The offset is in root.got.offset. */
836 bfd_signed_vma reg_got_refcount;
837
838 /* Similar to the above, the number of reloc references to this
839 symbols that need a R_CRIS_32_TPREL slot. The offset is in
840 root.got.offset, because this and .dtp_refcount can't validly
841 happen when there's also a regular GOT entry; that's invalid
842 input for which an error is emitted. */
843 bfd_signed_vma tprel_refcount;
844
845 /* Similar to the above, the number of reloc references to this
846 symbols that need a R_CRIS_DTP slot. The offset is in
847 root.got.offset; plus 4 if .tprel_refcount > 0. */
848 bfd_signed_vma dtp_refcount;
849 };
850
851 /* The local_got_refcounts and local_got_offsets are a multiple of
852 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
853 refcount for GOT itself, see code), with the summary / group offset
854 for local symbols located at offset N, reference counts for
855 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
856 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
857 3*LSNUM. */
858
859 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
860 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
861 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
862 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
863
864 /* CRIS ELF linker hash table. */
865
866 struct elf_cris_link_hash_table
867 {
868 struct elf_link_hash_table root;
869
870 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
871 since we try and avoid creating GOTPLT:s when there's already a GOT.
872 Instead, we keep and update the next available index here. */
873 bfd_size_type next_gotplt_entry;
874
875 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
876 been seen for any input; if != 0, then the constant-offset
877 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
878 negative at relocation, so that we don't need an extra flag for
879 when the reloc is output. */
880 bfd_signed_vma dtpmod_refcount;
881 };
882
883 /* Traverse a CRIS ELF linker hash table. */
884
885 #define elf_cris_link_hash_traverse(table, func, info) \
886 (elf_link_hash_traverse \
887 (&(table)->root, \
888 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
889 (info)))
890
891 /* Get the CRIS ELF linker hash table from a link_info structure. */
892
893 #define elf_cris_hash_table(p) \
894 ((struct elf_cris_link_hash_table *) (p)->hash)
895
896 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
897 "parent class"). The .root reference is just a simple type
898 check on the argument. */
899
900 #define elf_cris_hash_entry(p) \
901 ((struct elf_cris_link_hash_entry *) (&(p)->root))
902
903 /* Create an entry in a CRIS ELF linker hash table. */
904
905 static struct bfd_hash_entry *
906 elf_cris_link_hash_newfunc (entry, table, string)
907 struct bfd_hash_entry *entry;
908 struct bfd_hash_table *table;
909 const char *string;
910 {
911 struct elf_cris_link_hash_entry *ret =
912 (struct elf_cris_link_hash_entry *) entry;
913
914 /* Allocate the structure if it has not already been allocated by a
915 subclass. */
916 if (ret == (struct elf_cris_link_hash_entry *) NULL)
917 ret = ((struct elf_cris_link_hash_entry *)
918 bfd_hash_allocate (table,
919 sizeof (struct elf_cris_link_hash_entry)));
920 if (ret == (struct elf_cris_link_hash_entry *) NULL)
921 return (struct bfd_hash_entry *) ret;
922
923 /* Call the allocation method of the superclass. */
924 ret = ((struct elf_cris_link_hash_entry *)
925 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
926 table, string));
927 if (ret != (struct elf_cris_link_hash_entry *) NULL)
928 {
929 ret->pcrel_relocs_copied = NULL;
930 ret->gotplt_refcount = 0;
931 ret->gotplt_offset = 0;
932 ret->dtp_refcount = 0;
933 ret->tprel_refcount = 0;
934 ret->reg_got_refcount = 0;
935 }
936
937 return (struct bfd_hash_entry *) ret;
938 }
939
940 /* Create a CRIS ELF linker hash table. */
941
942 static struct bfd_link_hash_table *
943 elf_cris_link_hash_table_create (abfd)
944 bfd *abfd;
945 {
946 struct elf_cris_link_hash_table *ret;
947 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
948
949 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
950 if (ret == (struct elf_cris_link_hash_table *) NULL)
951 return NULL;
952
953 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
954 elf_cris_link_hash_newfunc,
955 sizeof (struct elf_cris_link_hash_entry)))
956 {
957 free (ret);
958 return NULL;
959 }
960
961 /* Initialize to skip over the first three entries in the gotplt; they
962 are used for run-time symbol evaluation. */
963 ret->next_gotplt_entry = 12;
964
965 /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */
966 ret->dtpmod_refcount = 0;
967
968 return &ret->root.root;
969 }
970 \f
971 /* Perform a single relocation. By default we use the standard BFD
972 routines, with a few tweaks. */
973
974 static bfd_reloc_status_type
975 cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
976 relocation)
977 reloc_howto_type * howto;
978 bfd * input_bfd;
979 asection * input_section;
980 bfd_byte * contents;
981 Elf_Internal_Rela * rel;
982 bfd_vma relocation;
983 {
984 bfd_reloc_status_type r;
985 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
986
987 /* PC-relative relocations are relative to the position *after*
988 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
989 not a single byte, since PC must be 16-bit-aligned. */
990 switch (r_type)
991 {
992 /* Check that the 16-bit GOT relocs are positive. */
993 case R_CRIS_16_GOTPLT:
994 case R_CRIS_16_GOT:
995 if ((bfd_signed_vma) relocation < 0)
996 return bfd_reloc_overflow;
997 break;
998
999 case R_CRIS_32_PLT_PCREL:
1000 case R_CRIS_32_PCREL:
1001 relocation -= 2;
1002 /* Fall through. */
1003 case R_CRIS_8_PCREL:
1004 case R_CRIS_16_PCREL:
1005 relocation -= 2;
1006 break;
1007
1008 default:
1009 break;
1010 }
1011
1012 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1013 contents, rel->r_offset,
1014 relocation, rel->r_addend);
1015 return r;
1016 }
1017 \f
1018
1019 /* The number of errors left before we stop outputting reloc-specific
1020 explanatory messages. By coincidence, this works nicely together
1021 with the default number of messages you'll get from LD about
1022 "relocation truncated to fit" messages before you get an
1023 "additional relocation overflows omitted from the output". */
1024 static int additional_relocation_error_msg_count = 10;
1025
1026 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
1027 copied, for further comments. */
1028
1029 static bfd_boolean
1030 cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1031 contents, relocs, local_syms, local_sections)
1032 bfd *output_bfd ATTRIBUTE_UNUSED;
1033 struct bfd_link_info *info;
1034 bfd *input_bfd;
1035 asection *input_section;
1036 bfd_byte *contents;
1037 Elf_Internal_Rela *relocs;
1038 Elf_Internal_Sym *local_syms;
1039 asection **local_sections;
1040 {
1041 bfd *dynobj;
1042 Elf_Internal_Shdr *symtab_hdr;
1043 struct elf_link_hash_entry **sym_hashes;
1044 bfd_vma *local_got_offsets;
1045 asection *sgot;
1046 asection *splt;
1047 asection *sreloc;
1048 Elf_Internal_Rela *rel;
1049 Elf_Internal_Rela *relend;
1050 asection *srelgot;
1051
1052 dynobj = elf_hash_table (info)->dynobj;
1053 local_got_offsets = elf_local_got_offsets (input_bfd);
1054 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1055 sym_hashes = elf_sym_hashes (input_bfd);
1056 relend = relocs + input_section->reloc_count;
1057
1058 sgot = NULL;
1059 splt = NULL;
1060 sreloc = NULL;
1061 srelgot = NULL;
1062
1063 if (dynobj != NULL)
1064 {
1065 splt = bfd_get_section_by_name (dynobj, ".plt");
1066 sgot = bfd_get_section_by_name (dynobj, ".got");
1067 }
1068
1069 for (rel = relocs; rel < relend; rel ++)
1070 {
1071 reloc_howto_type *howto;
1072 unsigned long r_symndx;
1073 Elf_Internal_Sym *sym;
1074 asection *sec;
1075 struct elf_link_hash_entry *h;
1076 bfd_vma relocation;
1077 bfd_reloc_status_type r;
1078 const char *symname = NULL;
1079 enum elf_cris_reloc_type r_type;
1080
1081 r_type = ELF32_R_TYPE (rel->r_info);
1082
1083 if ( r_type == R_CRIS_GNU_VTINHERIT
1084 || r_type == R_CRIS_GNU_VTENTRY)
1085 continue;
1086
1087 r_symndx = ELF32_R_SYM (rel->r_info);
1088 howto = cris_elf_howto_table + r_type;
1089 h = NULL;
1090 sym = NULL;
1091 sec = NULL;
1092
1093 if (r_symndx < symtab_hdr->sh_info)
1094 {
1095 sym = local_syms + r_symndx;
1096 sec = local_sections [r_symndx];
1097 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1098
1099 symname = (bfd_elf_string_from_elf_section
1100 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1101 if (symname == NULL)
1102 symname = bfd_section_name (input_bfd, sec);
1103 }
1104 else
1105 {
1106 bfd_boolean warned;
1107 bfd_boolean unresolved_reloc;
1108
1109 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1110 r_symndx, symtab_hdr, sym_hashes,
1111 h, sec, relocation,
1112 unresolved_reloc, warned);
1113
1114 symname = h->root.root.string;
1115
1116 if (unresolved_reloc
1117 /* Perhaps we should detect the cases that
1118 sec->output_section is expected to be NULL like i386 and
1119 m68k, but apparently (and according to elfxx-ia64.c) all
1120 valid cases are where the symbol is defined in a shared
1121 object which we link dynamically against. This includes
1122 PLT relocs for which we've created a PLT entry and other
1123 relocs for which we're prepared to create dynamic
1124 relocations.
1125
1126 For now, new situations cause us to just err when
1127 sec->output_offset is NULL but the object with the symbol
1128 is *not* dynamically linked against. Thus this will
1129 automatically remind us so we can see if there are other
1130 valid cases we need to revisit. */
1131 && (sec->owner->flags & DYNAMIC) != 0)
1132 relocation = 0;
1133
1134 else if (h->root.type == bfd_link_hash_defined
1135 || h->root.type == bfd_link_hash_defweak)
1136 {
1137 /* Here follow the cases where the relocation value must
1138 be zero (or when further handling is simplified when
1139 zero). I can't claim to understand the various
1140 conditions and they weren't described in the files
1141 where I copied them from (elf32-m68k.c and
1142 elf32-i386.c), but let's mention examples of where
1143 they happen. FIXME: Perhaps define and use a
1144 dynamic_symbol_p function like ia64.
1145
1146 - When creating a shared library, we can have an
1147 ordinary relocation for a symbol defined in a shared
1148 library (perhaps the one we create). We then make
1149 the relocation value zero, as the value seen now will
1150 be added into the relocation addend in this shared
1151 library, but must be handled only at dynamic-link
1152 time. FIXME: Not sure this example covers the
1153 h->elf_link_hash_flags test, though it's there in
1154 other targets. */
1155 if (info->shared
1156 && ((! info->symbolic && h->dynindx != -1)
1157 || !h->def_regular)
1158 && (input_section->flags & SEC_ALLOC) != 0
1159 && (r_type == R_CRIS_8
1160 || r_type == R_CRIS_16
1161 || r_type == R_CRIS_32
1162 || r_type == R_CRIS_8_PCREL
1163 || r_type == R_CRIS_16_PCREL
1164 || r_type == R_CRIS_32_PCREL))
1165 relocation = 0;
1166 else if (!info->relocatable && unresolved_reloc)
1167 {
1168 _bfd_error_handler
1169 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1170 input_bfd,
1171 input_section,
1172 cris_elf_howto_table[r_type].name,
1173 symname);
1174 bfd_set_error (bfd_error_bad_value);
1175 return FALSE;
1176 }
1177 }
1178 }
1179
1180 if (sec != NULL && elf_discarded_section (sec))
1181 {
1182 /* For relocs against symbols from removed linkonce sections,
1183 or sections discarded by a linker script, we just want the
1184 section contents zeroed. Avoid any special processing. */
1185 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1186 rel->r_info = 0;
1187 rel->r_addend = 0;
1188 continue;
1189 }
1190
1191 if (info->relocatable)
1192 continue;
1193
1194 switch (r_type)
1195 {
1196 case R_CRIS_16_GOTPLT:
1197 case R_CRIS_32_GOTPLT:
1198 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1199 but we require a PLT, and the PLT handling will take care of
1200 filling in the PLT-specific GOT entry. For the GOT offset,
1201 calculate it as we do when filling it in for the .got.plt
1202 section. If we don't have a PLT, punt to GOT handling. */
1203 if (h != NULL
1204 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1205 {
1206 asection *sgotplt
1207 = bfd_get_section_by_name (dynobj, ".got.plt");
1208 bfd_vma got_offset;
1209
1210 BFD_ASSERT (h->dynindx != -1);
1211 BFD_ASSERT (sgotplt != NULL);
1212
1213 got_offset
1214 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1215
1216 relocation = got_offset;
1217 break;
1218 }
1219
1220 /* We didn't make a PLT entry for this symbol. Maybe everything is
1221 folded into the GOT. Other than folding, this happens when
1222 statically linking PIC code, or when using -Bsymbolic. Check
1223 that we instead have a GOT entry as done for us by
1224 elf_cris_adjust_dynamic_symbol, and drop through into the
1225 ordinary GOT cases. This must not happen for the
1226 executable, because any reference it does to a function
1227 that is satisfied by a DSO must generate a PLT. We assume
1228 these call-specific relocs don't address non-functions. */
1229 if (h != NULL
1230 && (h->got.offset == (bfd_vma) -1
1231 || (!info->shared
1232 && !(h->def_regular
1233 || (!h->def_dynamic
1234 && h->root.type == bfd_link_hash_undefweak)))))
1235 {
1236 (*_bfd_error_handler)
1237 ((h->got.offset == (bfd_vma) -1)
1238 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1239 " against symbol `%s'")
1240 : _("%B, section %A: No PLT for relocation %s"
1241 " against symbol `%s'"),
1242 input_bfd,
1243 input_section,
1244 cris_elf_howto_table[r_type].name,
1245 (symname != NULL && symname[0] != '\0'
1246 ? symname : _("[whose name is lost]")));
1247
1248 /* FIXME: Perhaps blaming input is not the right thing to
1249 do; this is probably an internal error. But it is true
1250 that we didn't like that particular input. */
1251 bfd_set_error (bfd_error_bad_value);
1252 return FALSE;
1253 }
1254 /* Fall through. */
1255
1256 /* The size of the actual relocation is not used here; we only
1257 fill in the GOT table here. */
1258 case R_CRIS_16_GOT:
1259 case R_CRIS_32_GOT:
1260 {
1261 bfd_vma off;
1262
1263 /* Note that despite using RELA relocations, the .got contents
1264 is always filled in with the link-relative relocation
1265 value; the addend. */
1266
1267 if (h != NULL)
1268 {
1269 off = h->got.offset;
1270 BFD_ASSERT (off != (bfd_vma) -1);
1271
1272 if (!elf_hash_table (info)->dynamic_sections_created
1273 || (! info->shared
1274 && (h->def_regular
1275 || h->type == STT_FUNC
1276 || h->needs_plt))
1277 || (info->shared
1278 && (info->symbolic || h->dynindx == -1)
1279 && h->def_regular))
1280 {
1281 /* This wasn't checked above for ! info->shared, but
1282 must hold there if we get here; the symbol must
1283 be defined in the regular program or be undefweak
1284 or be a function or otherwise need a PLT. */
1285 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1286 || info->shared
1287 || h->def_regular
1288 || h->type == STT_FUNC
1289 || h->needs_plt
1290 || h->root.type == bfd_link_hash_undefweak);
1291
1292 /* This is actually a static link, or it is a
1293 -Bsymbolic link and the symbol is defined locally,
1294 or is undefweak, or the symbol was forced to be
1295 local because of a version file, or we're not
1296 creating a dynamic object. We must initialize this
1297 entry in the global offset table. Since the offset
1298 must always be a multiple of 4, we use the least
1299 significant bit to record whether we have
1300 initialized it already.
1301
1302 If this GOT entry should be runtime-initialized, we
1303 will create a .rela.got relocation entry to
1304 initialize the value. This is done in the
1305 finish_dynamic_symbol routine. */
1306 if ((off & 1) != 0)
1307 off &= ~1;
1308 else
1309 {
1310 bfd_put_32 (output_bfd, relocation,
1311 sgot->contents + off);
1312 h->got.offset |= 1;
1313 }
1314 }
1315 }
1316 else
1317 {
1318 BFD_ASSERT (local_got_offsets != NULL
1319 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1320
1321 off = local_got_offsets[r_symndx];
1322
1323 /* The offset must always be a multiple of 4. We use
1324 the least significant bit to record whether we have
1325 already generated the necessary reloc. */
1326 if ((off & 1) != 0)
1327 off &= ~1;
1328 else
1329 {
1330 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1331
1332 if (info->shared)
1333 {
1334 Elf_Internal_Rela outrel;
1335 bfd_byte *loc;
1336
1337 if (srelgot == NULL)
1338 srelgot
1339 = bfd_get_section_by_name (dynobj, ".rela.got");
1340 BFD_ASSERT (srelgot != NULL);
1341
1342 outrel.r_offset = (sgot->output_section->vma
1343 + sgot->output_offset
1344 + off);
1345 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1346 outrel.r_addend = relocation;
1347 loc = srelgot->contents;
1348 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1349 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1350 }
1351
1352 local_got_offsets[r_symndx] |= 1;
1353 }
1354 }
1355
1356 relocation = sgot->output_offset + off;
1357 if (rel->r_addend != 0)
1358 {
1359 /* We can't do anything for a relocation which is against
1360 a symbol *plus offset*. GOT holds relocations for
1361 symbols. Make this an error; the compiler isn't
1362 allowed to pass us these kinds of things. */
1363 if (h == NULL)
1364 (*_bfd_error_handler)
1365 (_("%B, section %A: relocation %s with non-zero addend %d"
1366 " against local symbol"),
1367 input_bfd,
1368 input_section,
1369 cris_elf_howto_table[r_type].name,
1370 rel->r_addend);
1371 else
1372 (*_bfd_error_handler)
1373 (_("%B, section %A: relocation %s with non-zero addend %d"
1374 " against symbol `%s'"),
1375 input_bfd,
1376 input_section,
1377 cris_elf_howto_table[r_type].name,
1378 rel->r_addend,
1379 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1380
1381 bfd_set_error (bfd_error_bad_value);
1382 return FALSE;
1383 }
1384 }
1385 break;
1386
1387 case R_CRIS_32_GOTREL:
1388 /* This relocation must only be performed against local symbols.
1389 It's also ok when we link a program and the symbol is either
1390 defined in an ordinary (non-DSO) object or is undefined weak. */
1391 if (h != NULL
1392 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1393 && !(!info->shared
1394 && (h->def_regular
1395 || (!h->def_dynamic
1396 && h->root.type == bfd_link_hash_undefweak))))
1397 {
1398 (*_bfd_error_handler)
1399 (_("%B, section %A: relocation %s is"
1400 " not allowed for global symbol: `%s'"),
1401 input_bfd,
1402 input_section,
1403 cris_elf_howto_table[r_type].name,
1404 symname);
1405 bfd_set_error (bfd_error_bad_value);
1406 return FALSE;
1407 }
1408
1409 /* This can happen if we get a link error with the input ELF
1410 variant mismatching the output variant. Emit an error so
1411 it's noticed if it happens elsewhere. */
1412 if (sgot == NULL)
1413 {
1414 (*_bfd_error_handler)
1415 (_("%B, section %A: relocation %s with no GOT created"),
1416 input_bfd,
1417 input_section,
1418 cris_elf_howto_table[r_type].name);
1419 bfd_set_error (bfd_error_bad_value);
1420 return FALSE;
1421 }
1422
1423 /* This relocation is like a PC-relative one, except the
1424 reference point is the location of GOT. Note that
1425 sgot->output_offset is not involved in this calculation. We
1426 always want the start of entire .got section, not the
1427 position after the reserved header. */
1428 relocation -= sgot->output_section->vma;
1429 break;
1430
1431 case R_CRIS_32_PLT_PCREL:
1432 /* Relocation is to the entry for this symbol in the
1433 procedure linkage table. */
1434
1435 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1436 without using the procedure linkage table. */
1437 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1438 break;
1439
1440 if (h->plt.offset == (bfd_vma) -1
1441 || splt == NULL)
1442 {
1443 /* We didn't make a PLT entry for this symbol. This
1444 happens when statically linking PIC code, or when
1445 using -Bsymbolic. */
1446 break;
1447 }
1448
1449 relocation = (splt->output_section->vma
1450 + splt->output_offset
1451 + h->plt.offset);
1452 break;
1453
1454 case R_CRIS_32_PLT_GOTREL:
1455 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1456 start of the .got section. See also comment at
1457 R_CRIS_32_GOT. */
1458 relocation -= sgot->output_section->vma;
1459
1460 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1461 without using the procedure linkage table. */
1462 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1463 break;
1464
1465 if (h->plt.offset == (bfd_vma) -1
1466 || splt == NULL)
1467 {
1468 /* We didn't make a PLT entry for this symbol. This
1469 happens when statically linking PIC code, or when
1470 using -Bsymbolic. */
1471 break;
1472 }
1473
1474 relocation = (splt->output_section->vma
1475 + splt->output_offset
1476 + h->plt.offset
1477 - sgot->output_section->vma);
1478 break;
1479
1480 case R_CRIS_8_PCREL:
1481 case R_CRIS_16_PCREL:
1482 case R_CRIS_32_PCREL:
1483 /* If the symbol was local, we need no shlib-specific handling. */
1484 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1485 || h->dynindx == -1)
1486 break;
1487
1488 /* Fall through. */
1489 case R_CRIS_8:
1490 case R_CRIS_16:
1491 case R_CRIS_32:
1492 if (info->shared
1493 && r_symndx != 0
1494 && (input_section->flags & SEC_ALLOC) != 0
1495 && ((r_type != R_CRIS_8_PCREL
1496 && r_type != R_CRIS_16_PCREL
1497 && r_type != R_CRIS_32_PCREL)
1498 || (!info->symbolic
1499 || (h != NULL && !h->def_regular))))
1500 {
1501 Elf_Internal_Rela outrel;
1502 bfd_byte *loc;
1503 bfd_boolean skip, relocate;
1504
1505 /* When generating a shared object, these relocations
1506 are copied into the output file to be resolved at run
1507 time. */
1508
1509 if (sreloc == NULL)
1510 {
1511 sreloc = _bfd_elf_get_dynamic_reloc_section
1512 (input_bfd, input_section, /*rela?*/ TRUE);
1513 /* The section should have been created in cris_elf_check_relocs,
1514 but that function will not be called for objects which fail in
1515 cris_elf_merge_private_bfd_data. */
1516 if (sreloc == NULL)
1517 {
1518 bfd_set_error (bfd_error_bad_value);
1519 return FALSE;
1520 }
1521 }
1522
1523 skip = FALSE;
1524 relocate = FALSE;
1525
1526 outrel.r_offset =
1527 _bfd_elf_section_offset (output_bfd, info, input_section,
1528 rel->r_offset);
1529 if (outrel.r_offset == (bfd_vma) -1)
1530 skip = TRUE;
1531 else if (outrel.r_offset == (bfd_vma) -2
1532 /* For now, undefined weak symbols with non-default
1533 visibility (yielding 0), like exception info for
1534 discarded sections, will get a R_CRIS_NONE
1535 relocation rather than no relocation, because we
1536 notice too late that the symbol doesn't need a
1537 relocation. */
1538 || (h != NULL
1539 && h->root.type == bfd_link_hash_undefweak
1540 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1541 skip = TRUE, relocate = TRUE;
1542 outrel.r_offset += (input_section->output_section->vma
1543 + input_section->output_offset);
1544
1545 if (skip)
1546 memset (&outrel, 0, sizeof outrel);
1547 /* h->dynindx may be -1 if the symbol was marked to
1548 become local. */
1549 else if (h != NULL
1550 && ((! info->symbolic && h->dynindx != -1)
1551 || !h->def_regular))
1552 {
1553 BFD_ASSERT (h->dynindx != -1);
1554 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1555 outrel.r_addend = relocation + rel->r_addend;
1556 }
1557 else
1558 {
1559 outrel.r_addend = relocation + rel->r_addend;
1560
1561 if (r_type == R_CRIS_32)
1562 {
1563 relocate = TRUE;
1564 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1565 }
1566 else
1567 {
1568 long indx;
1569
1570 if (bfd_is_abs_section (sec))
1571 indx = 0;
1572 else if (sec == NULL || sec->owner == NULL)
1573 {
1574 bfd_set_error (bfd_error_bad_value);
1575 return FALSE;
1576 }
1577 else
1578 {
1579 asection *osec;
1580
1581 /* We are turning this relocation into one
1582 against a section symbol. It would be
1583 proper to subtract the symbol's value,
1584 osec->vma, from the emitted reloc addend,
1585 but ld.so expects buggy relocs. */
1586 osec = sec->output_section;
1587 indx = elf_section_data (osec)->dynindx;
1588 if (indx == 0)
1589 {
1590 struct elf_cris_link_hash_table *htab;
1591 htab = elf_cris_hash_table (info);
1592 osec = htab->root.text_index_section;
1593 indx = elf_section_data (osec)->dynindx;
1594 }
1595 BFD_ASSERT (indx != 0);
1596 }
1597
1598 outrel.r_info = ELF32_R_INFO (indx, r_type);
1599 }
1600 }
1601
1602 loc = sreloc->contents;
1603 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1604 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1605
1606 /* This reloc will be computed at runtime, so there's no
1607 need to do anything now, except for R_CRIS_32 relocations
1608 that have been turned into R_CRIS_RELATIVE. */
1609 if (!relocate)
1610 continue;
1611 }
1612
1613 break;
1614
1615 case R_CRIS_16_DTPREL:
1616 case R_CRIS_32_DTPREL:
1617 /* This relocation must only be performed against local
1618 symbols, or to sections that are not loadable. It's also
1619 ok when we link a program and the symbol is defined in an
1620 ordinary (non-DSO) object (if it's undefined there, we've
1621 already seen an error). */
1622 if (h != NULL
1623 && (input_section->flags & SEC_ALLOC) != 0
1624 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1625 && (info->shared
1626 || (!h->def_regular
1627 && h->root.type != bfd_link_hash_undefined)))
1628 {
1629 (*_bfd_error_handler)
1630 ((h->root.type == bfd_link_hash_undefined)
1631 /* We shouldn't get here for GCC-emitted code. */
1632 ? _("%B, section %A: relocation %s has an undefined"
1633 " reference to `%s', perhaps a declaration mixup?")
1634 : ("%B, section %A: relocation %s is"
1635 " not allowed for `%s', a global symbol with default"
1636 " visibility, perhaps a declaration mixup?"),
1637 input_bfd,
1638 input_section,
1639 cris_elf_howto_table[r_type].name,
1640 symname != NULL && symname[0] != '\0'
1641 ? symname : _("[whose name is lost]"));
1642 bfd_set_error (bfd_error_bad_value);
1643 return FALSE;
1644 }
1645
1646 BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1647 || elf_cris_hash_table (info)->dtpmod_refcount != 0);
1648
1649 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1650 already done so. Note that we do this in .got.plt, not
1651 in .got, as .got.plt contains the first part, still the
1652 reloc is against .got, because the linker script directs
1653 (is required to direct) them both into .got. */
1654 if (elf_cris_hash_table (info)->dtpmod_refcount > 0
1655 && (input_section->flags & SEC_ALLOC) != 0)
1656 {
1657 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1658 BFD_ASSERT (sgotplt != NULL);
1659
1660 if (info->shared)
1661 {
1662 Elf_Internal_Rela outrel;
1663 bfd_byte *loc;
1664
1665 if (srelgot == NULL)
1666 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1667 BFD_ASSERT (srelgot != NULL);
1668 loc = srelgot->contents;
1669 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1670
1671 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1672 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1673 outrel.r_offset = (sgotplt->output_section->vma
1674 + sgotplt->output_offset
1675 + 12);
1676 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1677 outrel.r_addend = 0;
1678 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1679 }
1680 else
1681 {
1682 /* For an executable, the GOT entry contents is known. */
1683 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1684 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1685 }
1686
1687 /* Reverse the sign to mark that we've emitted the
1688 required GOT entry. */
1689 elf_cris_hash_table (info)->dtpmod_refcount
1690 = -elf_cris_hash_table (info)->dtpmod_refcount;
1691 }
1692
1693 /* The thread-based offset to the local symbol is the
1694 relocation.
1695 For the executable, TLS data begins at the thread pointer plus
1696 the negative size of the TLS data. For a DSO, that's part of
1697 the module TLS offset. */
1698 relocation -= elf_hash_table (info)->tls_sec == NULL
1699 ? 0 : (elf_hash_table (info)->tls_sec->vma
1700 + (info->shared
1701 ? 0 : elf_hash_table (info)->tls_size));
1702 break;
1703
1704 case R_CRIS_32_GD:
1705 if (info->shared)
1706 {
1707 bfd_set_error (bfd_error_invalid_operation);
1708
1709 /* We've already informed in cris_elf_check_relocs that
1710 this is an error. */
1711 return FALSE;
1712 }
1713 /* Fall through. */
1714
1715 case R_CRIS_16_GOT_GD:
1716 case R_CRIS_32_GOT_GD:
1717 if (rel->r_addend != 0)
1718 {
1719 /* We can't do anything for a relocation which is against a
1720 symbol *plus offset*. The GOT holds relocations for
1721 symbols. Make this an error; the compiler isn't allowed
1722 to pass us these kinds of things. */
1723 (*_bfd_error_handler)
1724 (_("%B, section %A: relocation %s with non-zero addend %d"
1725 " against symbol `%s'"),
1726 input_bfd,
1727 input_section,
1728 cris_elf_howto_table[r_type].name,
1729 rel->r_addend,
1730 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1731
1732 bfd_set_error (bfd_error_bad_value);
1733 return FALSE;
1734 }
1735
1736 if (!info->shared && (h == NULL || h->def_regular))
1737 {
1738 /* Known contents of the GOT. */
1739 bfd_vma off;
1740
1741 /* The symbol is defined in the program, so just write
1742 (1, known_tpoffset) into the GOT. */
1743 relocation -= elf_hash_table (info)->tls_sec->vma;
1744
1745 if (h != NULL)
1746 {
1747 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1748 ? h->got.offset + 4 : h->got.offset;
1749 }
1750 else
1751 {
1752 off = local_got_offsets[r_symndx];
1753 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1754 off += 4;
1755 }
1756
1757 /* We use bit 1 of the offset as a flag for GOT entry with
1758 the R_CRIS_DTP reloc, setting it when we've emitted the
1759 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1760 relocs. */
1761 if ((off & 2) == 0)
1762 {
1763 off &= ~3;
1764
1765 if (h != NULL)
1766 h->got.offset |= 2;
1767 else
1768 local_got_offsets[r_symndx] |= 2;
1769
1770 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1771 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1772 }
1773 else
1774 off &= ~3;
1775
1776 relocation = sgot->output_offset + off
1777 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1778 }
1779 else
1780 {
1781 /* Not all parts of the GOT entry are known; emit a real
1782 relocation. */
1783 bfd_vma off;
1784
1785 if (h != NULL)
1786 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1787 ? h->got.offset + 4 : h->got.offset;
1788 else
1789 {
1790 off = local_got_offsets[r_symndx];
1791 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1792 off += 4;
1793 }
1794
1795 /* See above re bit 1 and bit 0 usage. */
1796 if ((off & 2) == 0)
1797 {
1798 Elf_Internal_Rela outrel;
1799 bfd_byte *loc;
1800
1801 off &= ~3;
1802
1803 if (h != NULL)
1804 h->got.offset |= 2;
1805 else
1806 local_got_offsets[r_symndx] |= 2;
1807
1808 /* Clear the target contents of the GOT (just as a
1809 gesture; it's already cleared on allocation): this
1810 relocation is not like the other dynrelocs. */
1811 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1812 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1813
1814 if (srelgot == NULL)
1815 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1816 BFD_ASSERT (srelgot != NULL);
1817
1818 if (h != NULL && h->dynindx != -1)
1819 {
1820 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1821 relocation = 0;
1822 }
1823 else
1824 {
1825 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1826
1827 /* NULL if we had an error. */
1828 relocation -= elf_hash_table (info)->tls_sec == NULL
1829 ? 0 : elf_hash_table (info)->tls_sec->vma;
1830 }
1831
1832 outrel.r_offset = (sgot->output_section->vma
1833 + sgot->output_offset
1834 + off);
1835 outrel.r_addend = relocation;
1836 loc = srelgot->contents;
1837 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1838
1839 /* NULL if we had an error. */
1840 if (srelgot->contents != NULL)
1841 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1842 }
1843 else
1844 off &= ~3;
1845
1846 relocation = sgot->output_offset + off
1847 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1848 }
1849
1850 /* The GOT-relative offset to the GOT entry is the
1851 relocation, or for R_CRIS_32_GD, the actual address of
1852 the GOT entry. */
1853 break;
1854
1855 case R_CRIS_32_IE:
1856 if (info->shared)
1857 {
1858 bfd_set_error (bfd_error_invalid_operation);
1859
1860 /* We've already informed in cris_elf_check_relocs that
1861 this is an error. */
1862 return FALSE;
1863 }
1864 /* Fall through. */
1865
1866 case R_CRIS_32_GOT_TPREL:
1867 case R_CRIS_16_GOT_TPREL:
1868 if (rel->r_addend != 0)
1869 {
1870 /* We can't do anything for a relocation which is
1871 against a symbol *plus offset*. GOT holds
1872 relocations for symbols. Make this an error; the
1873 compiler isn't allowed to pass us these kinds of
1874 things. */
1875 (*_bfd_error_handler)
1876 (_("%B, section %A: relocation %s with non-zero addend %d"
1877 " against symbol `%s'"),
1878 input_bfd,
1879 input_section,
1880 cris_elf_howto_table[r_type].name,
1881 rel->r_addend,
1882 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1883 bfd_set_error (bfd_error_bad_value);
1884 return FALSE;
1885 }
1886
1887 if (!info->shared && (h == NULL || h->def_regular))
1888 {
1889 /* Known contents of the GOT. */
1890 bfd_vma off;
1891
1892 /* The symbol is defined in the program, so just write
1893 the -prog_tls_size+known_tpoffset into the GOT. */
1894 relocation -= elf_hash_table (info)->tls_sec->vma;
1895 relocation -= elf_hash_table (info)->tls_size;
1896
1897 if (h != NULL)
1898 off = h->got.offset;
1899 else
1900 off = local_got_offsets[r_symndx];
1901
1902 /* Bit 0 is used to mark whether we've emitted the required
1903 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1904 is used similarly for R_CRIS_DTP, see above. */
1905 if ((off & 1) == 0)
1906 {
1907 off &= ~3;
1908
1909 if (h != NULL)
1910 h->got.offset |= 1;
1911 else
1912 local_got_offsets[r_symndx] |= 1;
1913
1914 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1915 }
1916 else
1917 off &= ~3;
1918
1919 relocation = sgot->output_offset + off
1920 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1921 }
1922 else
1923 {
1924 /* Emit a real relocation. */
1925 bfd_vma off;
1926
1927 if (h != NULL)
1928 off = h->got.offset;
1929 else
1930 off = local_got_offsets[r_symndx];
1931
1932 /* See above re usage of bit 0 and 1. */
1933 if ((off & 1) == 0)
1934 {
1935 Elf_Internal_Rela outrel;
1936 bfd_byte *loc;
1937
1938 off &= ~3;
1939
1940 if (h != NULL)
1941 h->got.offset |= 1;
1942 else
1943 local_got_offsets[r_symndx] |= 1;
1944
1945 if (srelgot == NULL)
1946 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1947 BFD_ASSERT (srelgot != NULL);
1948
1949 if (h != NULL && h->dynindx != -1)
1950 {
1951 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1952 relocation = 0;
1953 }
1954 else
1955 {
1956 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1957
1958 /* NULL if we had an error. */
1959 relocation -= elf_hash_table (info)->tls_sec == NULL
1960 ? 0 : elf_hash_table (info)->tls_sec->vma;
1961 }
1962
1963 /* Just "define" the initial contents in some
1964 semi-logical way. */
1965 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1966
1967 outrel.r_offset = (sgot->output_section->vma
1968 + sgot->output_offset
1969 + off);
1970 outrel.r_addend = relocation;
1971 loc = srelgot->contents;
1972 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1973 /* NULL if we had an error. */
1974 if (srelgot->contents != NULL)
1975 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1976 }
1977 else
1978 off &= ~3;
1979
1980 relocation = sgot->output_offset + off
1981 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1982 }
1983
1984 /* The GOT-relative offset to the GOT entry is the relocation,
1985 or for R_CRIS_32_GD, the actual address of the GOT entry. */
1986 break;
1987
1988 case R_CRIS_16_TPREL:
1989 case R_CRIS_32_TPREL:
1990 /* This relocation must only be performed against symbols
1991 defined in an ordinary (non-DSO) object. */
1992 if (info->shared)
1993 {
1994 bfd_set_error (bfd_error_invalid_operation);
1995
1996 /* We've already informed in cris_elf_check_relocs that
1997 this is an error. */
1998 return FALSE;
1999 }
2000
2001 if (h != NULL
2002 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2003 && !h->def_regular
2004 /* If it's undefined, then an error message has already
2005 been emitted. */
2006 && h->root.type != bfd_link_hash_undefined)
2007 {
2008 (*_bfd_error_handler)
2009 (_("%B, section %A: relocation %s is"
2010 " not allowed for symbol: `%s'"
2011 " which is defined outside the program,"
2012 " perhaps a declaration mixup?"),
2013 input_bfd,
2014 input_section,
2015 cris_elf_howto_table[r_type].name,
2016 symname);
2017 bfd_set_error (bfd_error_bad_value);
2018 return FALSE;
2019 }
2020
2021 /* NULL if we had an error. */
2022 relocation -= elf_hash_table (info)->tls_sec == NULL
2023 ? 0
2024 : (elf_hash_table (info)->tls_sec->vma
2025 + elf_hash_table (info)->tls_size);
2026
2027 /* The TLS-relative offset is the relocation. */
2028 break;
2029
2030 default:
2031 BFD_FAIL ();
2032 return FALSE;
2033 }
2034
2035 r = cris_final_link_relocate (howto, input_bfd, input_section,
2036 contents, rel, relocation);
2037
2038 if (r != bfd_reloc_ok)
2039 {
2040 const char * msg = (const char *) NULL;
2041
2042 switch (r)
2043 {
2044 case bfd_reloc_overflow:
2045 r = info->callbacks->reloc_overflow
2046 (info, (h ? &h->root : NULL), symname, howto->name,
2047 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2048 if (additional_relocation_error_msg_count > 0)
2049 {
2050 additional_relocation_error_msg_count--;
2051 switch (r_type)
2052 {
2053 case R_CRIS_16_GOTPLT:
2054 case R_CRIS_16_GOT:
2055
2056 /* Not just TLS is involved here, so we make
2057 generation and message depend on -fPIC/-fpic
2058 only. */
2059 case R_CRIS_16_GOT_TPREL:
2060 case R_CRIS_16_GOT_GD:
2061 (*_bfd_error_handler)
2062 (_("(too many global variables for -fpic:"
2063 " recompile with -fPIC)"));
2064 break;
2065
2066 case R_CRIS_16_TPREL:
2067 case R_CRIS_16_DTPREL:
2068 (*_bfd_error_handler)
2069 (_("(thread-local data too big for -fpic or"
2070 " -msmall-tls: recompile with -fPIC or"
2071 " -mno-small-tls)"));
2072 break;
2073
2074 /* No known cause for overflow for other relocs. */
2075 default:
2076 break;
2077 }
2078 }
2079 break;
2080
2081 case bfd_reloc_undefined:
2082 r = info->callbacks->undefined_symbol
2083 (info, symname, input_bfd, input_section, rel->r_offset,
2084 TRUE);
2085 break;
2086
2087 case bfd_reloc_outofrange:
2088 msg = _("internal error: out of range error");
2089 break;
2090
2091 case bfd_reloc_notsupported:
2092 msg = _("internal error: unsupported relocation error");
2093 break;
2094
2095 case bfd_reloc_dangerous:
2096 msg = _("internal error: dangerous relocation");
2097 break;
2098
2099 default:
2100 msg = _("internal error: unknown error");
2101 break;
2102 }
2103
2104 if (msg)
2105 r = info->callbacks->warning
2106 (info, msg, symname, input_bfd, input_section, rel->r_offset);
2107
2108 if (! r)
2109 return FALSE;
2110 }
2111 }
2112
2113 return TRUE;
2114 }
2115 \f
2116 /* Finish up dynamic symbol handling. We set the contents of various
2117 dynamic sections here. */
2118
2119 static bfd_boolean
2120 elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2121 bfd *output_bfd;
2122 struct bfd_link_info *info;
2123 struct elf_link_hash_entry *h;
2124 Elf_Internal_Sym *sym;
2125 {
2126 bfd *dynobj;
2127
2128 /* Where in the plt entry to put values. */
2129 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2130
2131 /* What offset to add to the distance to the first PLT entry for the
2132 value at plt_off3. */
2133 int plt_off3_value_bias = 4;
2134
2135 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2136 for PIC and non-PIC for v32 and pre-v32). */
2137 int plt_stub_offset = 8;
2138 int plt_entry_size = PLT_ENTRY_SIZE;
2139 const bfd_byte *plt_entry = elf_cris_plt_entry;
2140 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2141
2142 /* Adjust the various PLT entry offsets. */
2143 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2144 {
2145 plt_off2 = 14;
2146 plt_off3 = 20;
2147 plt_off3_value_bias = -2;
2148 plt_stub_offset = 12;
2149 plt_entry_size = PLT_ENTRY_SIZE_V32;
2150 plt_entry = elf_cris_plt_entry_v32;
2151 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2152 }
2153
2154 dynobj = elf_hash_table (info)->dynobj;
2155
2156 if (h->plt.offset != (bfd_vma) -1)
2157 {
2158 asection *splt;
2159 asection *sgotplt;
2160 asection *sgot;
2161 asection *srela;
2162 bfd_vma got_base;
2163
2164 bfd_vma gotplt_offset
2165 = elf_cris_hash_entry (h)->gotplt_offset;
2166 Elf_Internal_Rela rela;
2167 bfd_byte *loc;
2168 bfd_boolean has_gotplt = gotplt_offset != 0;
2169
2170 /* Get the index in the .rela.plt relocations for the .got.plt
2171 entry that corresponds to this symbol.
2172 We have to count backwards here, and the result is only valid
2173 as an index into .rela.plt. We also have to undo the effect
2174 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2175 .got.plt) for which gotplt_offset is adjusted, because while
2176 that entry goes into .got.plt, its relocation goes into
2177 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2178 processed as part of the runtime lazy .rela.plt relocation).
2179 FIXME: There be literal constants here... */
2180 bfd_vma rela_plt_index
2181 = (elf_cris_hash_table (info)->dtpmod_refcount != 0
2182 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2183
2184 /* Get the offset into the .got table of the entry that corresponds
2185 to this function. Note that we embed knowledge that "incoming"
2186 .got goes after .got.plt in the output without padding (pointer
2187 aligned). However, that knowledge is present in several other
2188 places too. */
2189 bfd_vma got_offset
2190 = (has_gotplt
2191 ? gotplt_offset
2192 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2193
2194 /* This symbol has an entry in the procedure linkage table. Set it
2195 up. */
2196
2197 BFD_ASSERT (h->dynindx != -1);
2198
2199 splt = bfd_get_section_by_name (dynobj, ".plt");
2200 sgot = bfd_get_section_by_name (dynobj, ".got");
2201 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2202 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2203 BFD_ASSERT (splt != NULL && sgotplt != NULL
2204 && (! has_gotplt || srela != NULL));
2205
2206 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2207
2208 /* Fill in the entry in the procedure linkage table. */
2209 if (! info->shared)
2210 {
2211 memcpy (splt->contents + h->plt.offset, plt_entry,
2212 plt_entry_size);
2213
2214 /* We need to enter the absolute address of the GOT entry here. */
2215 bfd_put_32 (output_bfd, got_base + got_offset,
2216 splt->contents + h->plt.offset + plt_off1);
2217 }
2218 else
2219 {
2220 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2221 plt_entry_size);
2222 bfd_put_32 (output_bfd, got_offset,
2223 splt->contents + h->plt.offset + plt_off1);
2224 }
2225
2226 /* Fill in the plt entry and make a relocation, if this is a "real"
2227 PLT entry. */
2228 if (has_gotplt)
2229 {
2230 /* Fill in the offset to the reloc table. */
2231 bfd_put_32 (output_bfd,
2232 rela_plt_index * sizeof (Elf32_External_Rela),
2233 splt->contents + h->plt.offset + plt_off2);
2234
2235 /* Fill in the offset to the first PLT entry, where to "jump". */
2236 bfd_put_32 (output_bfd,
2237 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2238 splt->contents + h->plt.offset + plt_off3);
2239
2240 /* Fill in the entry in the global offset table with the address of
2241 the relocating stub. */
2242 bfd_put_32 (output_bfd,
2243 (splt->output_section->vma
2244 + splt->output_offset
2245 + h->plt.offset
2246 + plt_stub_offset),
2247 sgotplt->contents + got_offset);
2248
2249 /* Fill in the entry in the .rela.plt section. */
2250 rela.r_offset = (sgotplt->output_section->vma
2251 + sgotplt->output_offset
2252 + got_offset);
2253 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2254 rela.r_addend = 0;
2255 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2256 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2257 }
2258
2259 if (!h->def_regular)
2260 {
2261 /* Mark the symbol as undefined, rather than as defined in
2262 the .plt section. Leave the value alone. */
2263 sym->st_shndx = SHN_UNDEF;
2264
2265 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2266 know whether resetting the value is significant; if it really
2267 is, rather than a quirk or bug in the sparc port, then I
2268 believe we'd see this elsewhere. */
2269 /* If the symbol is weak, we do need to clear the value.
2270 Otherwise, the PLT entry would provide a definition for
2271 the symbol even if the symbol wasn't defined anywhere,
2272 and so the symbol would never be NULL. */
2273 if (!h->ref_regular_nonweak)
2274 sym->st_value = 0;
2275 }
2276 }
2277
2278 /* For an ordinary program, we emit .got relocs only for symbols that
2279 are in the dynamic-symbols table and are either defined by the
2280 program or are undefined weak symbols, or are function symbols
2281 where we do not output a PLT: the PLT reloc was output above and all
2282 references to the function symbol are redirected to the PLT. */
2283 if (h->got.offset != (bfd_vma) -1
2284 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2285 && (info->shared
2286 || (h->dynindx != -1
2287 && h->plt.offset == (bfd_vma) -1
2288 && !h->def_regular
2289 && h->root.type != bfd_link_hash_undefweak)))
2290 {
2291 asection *sgot;
2292 asection *srela;
2293 Elf_Internal_Rela rela;
2294 bfd_byte *loc;
2295 bfd_byte *where;
2296
2297 /* This symbol has an entry in the global offset table. Set it up. */
2298
2299 sgot = bfd_get_section_by_name (dynobj, ".got");
2300 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2301 BFD_ASSERT (sgot != NULL && srela != NULL);
2302
2303 rela.r_offset = (sgot->output_section->vma
2304 + sgot->output_offset
2305 + (h->got.offset &~ (bfd_vma) 1));
2306
2307 /* If this is a static link, or it is a -Bsymbolic link and the
2308 symbol is defined locally or was forced to be local because
2309 of a version file, we just want to emit a RELATIVE reloc.
2310 The entry in the global offset table will already have been
2311 initialized in the relocate_section function. */
2312 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2313 if (! elf_hash_table (info)->dynamic_sections_created
2314 || (info->shared
2315 && (info->symbolic || h->dynindx == -1)
2316 && h->def_regular))
2317 {
2318 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2319 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2320 }
2321 else
2322 {
2323 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2324 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2325 rela.r_addend = 0;
2326 }
2327
2328 loc = srela->contents;
2329 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2330 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2331 }
2332
2333 if (h->needs_copy)
2334 {
2335 asection *s;
2336 Elf_Internal_Rela rela;
2337 bfd_byte *loc;
2338
2339 /* This symbol needs a copy reloc. Set it up. */
2340
2341 BFD_ASSERT (h->dynindx != -1
2342 && (h->root.type == bfd_link_hash_defined
2343 || h->root.type == bfd_link_hash_defweak));
2344
2345 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2346 ".rela.bss");
2347 BFD_ASSERT (s != NULL);
2348
2349 rela.r_offset = (h->root.u.def.value
2350 + h->root.u.def.section->output_section->vma
2351 + h->root.u.def.section->output_offset);
2352 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2353 rela.r_addend = 0;
2354 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2355 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2356 }
2357
2358 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2359 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2360 || h == elf_hash_table (info)->hgot)
2361 sym->st_shndx = SHN_ABS;
2362
2363 return TRUE;
2364 }
2365 \f
2366 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2367 offsets were changed, as part of -z combreloc handling, from those we
2368 computed. */
2369
2370 static bfd_boolean
2371 elf_cris_finish_dynamic_sections (output_bfd, info)
2372 bfd *output_bfd;
2373 struct bfd_link_info *info;
2374 {
2375 bfd *dynobj;
2376 asection *sgot;
2377 asection *sdyn;
2378
2379 dynobj = elf_hash_table (info)->dynobj;
2380
2381 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2382 BFD_ASSERT (sgot != NULL);
2383 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2384
2385 if (elf_hash_table (info)->dynamic_sections_created)
2386 {
2387 asection *splt;
2388 Elf32_External_Dyn *dyncon, *dynconend;
2389
2390 splt = bfd_get_section_by_name (dynobj, ".plt");
2391 BFD_ASSERT (splt != NULL && sdyn != NULL);
2392
2393 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2394 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2395 for (; dyncon < dynconend; dyncon++)
2396 {
2397 Elf_Internal_Dyn dyn;
2398 asection *s;
2399
2400 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2401
2402 switch (dyn.d_tag)
2403 {
2404 default:
2405 break;
2406
2407 case DT_PLTGOT:
2408 s = bfd_get_section_by_name (output_bfd, ".got");
2409 BFD_ASSERT (s != NULL);
2410 dyn.d_un.d_ptr = s->vma;
2411 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2412 break;
2413
2414 case DT_JMPREL:
2415 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2416 if all symbols are found in the .got (not .got.plt). */
2417 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2418 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2419 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2420 break;
2421
2422 case DT_PLTRELSZ:
2423 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2424 if (s == NULL)
2425 dyn.d_un.d_val = 0;
2426 else
2427 dyn.d_un.d_val = s->size;
2428 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2429 break;
2430
2431 case DT_RELASZ:
2432 /* The procedure linkage table relocs (DT_JMPREL) should
2433 not be included in the overall relocs (DT_RELA).
2434 Therefore, we override the DT_RELASZ entry here to
2435 make it not include the JMPREL relocs. Since the
2436 linker script arranges for .rela.plt to follow all
2437 other relocation sections, we don't have to worry
2438 about changing the DT_RELA entry. */
2439 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2440 if (s != NULL)
2441 dyn.d_un.d_val -= s->size;
2442 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2443 break;
2444 }
2445 }
2446
2447 /* Fill in the first entry in the procedure linkage table. */
2448 if (splt->size > 0)
2449 {
2450 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2451 {
2452 if (info->shared)
2453 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2454 PLT_ENTRY_SIZE_V32);
2455 else
2456 {
2457 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2458 PLT_ENTRY_SIZE_V32);
2459 bfd_put_32 (output_bfd,
2460 sgot->output_section->vma
2461 + sgot->output_offset + 4,
2462 splt->contents + 4);
2463
2464 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2465 = PLT_ENTRY_SIZE_V32;
2466 }
2467 }
2468 else
2469 {
2470 if (info->shared)
2471 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2472 PLT_ENTRY_SIZE);
2473 else
2474 {
2475 memcpy (splt->contents, elf_cris_plt0_entry,
2476 PLT_ENTRY_SIZE);
2477 bfd_put_32 (output_bfd,
2478 sgot->output_section->vma
2479 + sgot->output_offset + 4,
2480 splt->contents + 6);
2481 bfd_put_32 (output_bfd,
2482 sgot->output_section->vma
2483 + sgot->output_offset + 8,
2484 splt->contents + 14);
2485
2486 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2487 = PLT_ENTRY_SIZE;
2488 }
2489 }
2490 }
2491 }
2492
2493 /* Fill in the first three entries in the global offset table. */
2494 if (sgot->size > 0)
2495 {
2496 if (sdyn == NULL)
2497 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2498 else
2499 bfd_put_32 (output_bfd,
2500 sdyn->output_section->vma + sdyn->output_offset,
2501 sgot->contents);
2502 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2503 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2504 }
2505
2506 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2507
2508 return TRUE;
2509 }
2510 \f
2511 /* Return the section that should be marked against GC for a given
2512 relocation. */
2513
2514 static asection *
2515 cris_elf_gc_mark_hook (asection *sec,
2516 struct bfd_link_info *info,
2517 Elf_Internal_Rela *rel,
2518 struct elf_link_hash_entry *h,
2519 Elf_Internal_Sym *sym)
2520 {
2521 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2522 if (h != NULL)
2523 switch (r_type)
2524 {
2525 case R_CRIS_GNU_VTINHERIT:
2526 case R_CRIS_GNU_VTENTRY:
2527 return NULL;
2528
2529 default:
2530 break;
2531 }
2532
2533 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2534 }
2535
2536 /* Update the got entry reference counts for the section being removed. */
2537
2538 static bfd_boolean
2539 cris_elf_gc_sweep_hook (bfd *abfd,
2540 struct bfd_link_info *info,
2541 asection *sec,
2542 const Elf_Internal_Rela *relocs)
2543 {
2544 Elf_Internal_Shdr *symtab_hdr;
2545 struct elf_link_hash_entry **sym_hashes;
2546 bfd_signed_vma *local_got_refcounts;
2547 const Elf_Internal_Rela *rel, *relend;
2548 bfd *dynobj;
2549 asection *sgot;
2550 asection *srelgot;
2551
2552 if (info->relocatable)
2553 return TRUE;
2554
2555 dynobj = elf_hash_table (info)->dynobj;
2556 if (dynobj == NULL)
2557 return TRUE;
2558
2559 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2560 sym_hashes = elf_sym_hashes (abfd);
2561 local_got_refcounts = elf_local_got_refcounts (abfd);
2562
2563 sgot = bfd_get_section_by_name (dynobj, ".got");
2564 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2565
2566 relend = relocs + sec->reloc_count;
2567 for (rel = relocs; rel < relend; rel++)
2568 {
2569 unsigned long r_symndx;
2570 struct elf_link_hash_entry *h = NULL;
2571 bfd_signed_vma got_element_size = 4;
2572 bfd_signed_vma *specific_refcount = NULL;
2573 enum elf_cris_reloc_type r_type;
2574
2575 r_symndx = ELF32_R_SYM (rel->r_info);
2576 if (r_symndx >= symtab_hdr->sh_info)
2577 {
2578 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2579 while (h->root.type == bfd_link_hash_indirect
2580 || h->root.type == bfd_link_hash_warning)
2581 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2582 }
2583
2584 r_type = ELF32_R_TYPE (rel->r_info);
2585 switch (r_type)
2586 {
2587 case R_CRIS_32_GOT:
2588 case R_CRIS_16_GOT:
2589 case R_CRIS_16_GOTPLT:
2590 case R_CRIS_32_GOTPLT:
2591 specific_refcount = h != NULL
2592 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2593 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2594 break;
2595
2596 case R_CRIS_32_GD:
2597 case R_CRIS_32_GOT_GD:
2598 case R_CRIS_16_GOT_GD:
2599 got_element_size = 8;
2600 specific_refcount = h != NULL
2601 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2602 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2603 break;
2604
2605 case R_CRIS_32_IE:
2606 case R_CRIS_16_GOT_TPREL:
2607 case R_CRIS_32_GOT_TPREL:
2608 specific_refcount = h != NULL
2609 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2610 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2611 break;
2612
2613 default:
2614 break;
2615 }
2616
2617 switch (r_type)
2618 {
2619 case R_CRIS_32_IE:
2620 case R_CRIS_32_GD:
2621 case R_CRIS_16_GOT_TPREL:
2622 case R_CRIS_32_GOT_TPREL:
2623 case R_CRIS_32_GOT_GD:
2624 case R_CRIS_16_GOT_GD:
2625 case R_CRIS_16_GOT:
2626 case R_CRIS_32_GOT:
2627 if (h != NULL)
2628 {
2629 /* If the counters are 0 when we got here, we've
2630 miscounted somehow somewhere, an internal error. */
2631 BFD_ASSERT (h->got.refcount > 0);
2632 --h->got.refcount;
2633
2634 BFD_ASSERT (*specific_refcount > 0);
2635 --*specific_refcount;
2636 if (*specific_refcount == 0)
2637 {
2638 /* We don't need the .got entry any more. */
2639 sgot->size -= got_element_size;
2640 srelgot->size -= sizeof (Elf32_External_Rela);
2641 }
2642 break;
2643 }
2644
2645 local_got_reloc:
2646 if (local_got_refcounts != NULL)
2647 {
2648 /* If the counters are 0 when we got here, we've
2649 miscounted somehow somewhere, an internal error. */
2650 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2651 --local_got_refcounts[r_symndx];
2652
2653 BFD_ASSERT (*specific_refcount > 0);
2654 --*specific_refcount;
2655 if (*specific_refcount == 0)
2656 {
2657 /* We don't need the .got entry any more. */
2658 sgot->size -= got_element_size;
2659 if (info->shared)
2660 srelgot->size -= sizeof (Elf32_External_Rela);
2661 }
2662 }
2663 break;
2664
2665 case R_CRIS_16_GOTPLT:
2666 case R_CRIS_32_GOTPLT:
2667 /* For local symbols, treat these like GOT relocs. */
2668 if (h == NULL)
2669 goto local_got_reloc;
2670 /* Fall through. */
2671
2672 case R_CRIS_32_PLT_GOTREL:
2673 /* FIXME: We don't garbage-collect away the .got section. */
2674 if (local_got_refcounts != NULL)
2675 local_got_refcounts[-1]--;
2676 /* Fall through. */
2677
2678 case R_CRIS_8_PCREL:
2679 case R_CRIS_16_PCREL:
2680 case R_CRIS_32_PCREL:
2681 case R_CRIS_32_PLT_PCREL:
2682 if (h != NULL)
2683 {
2684 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2685 && h->plt.refcount > 0)
2686 --h->plt.refcount;
2687 }
2688 break;
2689
2690 case R_CRIS_32_DTPREL:
2691 /* This'd be a .dtpreld entry in e.g. debug info. */
2692 if ((sec->flags & SEC_ALLOC) == 0)
2693 break;
2694 /* Fall through. */
2695 case R_CRIS_16_DTPREL:
2696 elf_cris_hash_table (info)->dtpmod_refcount--;
2697 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2698 elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2699 BFD_ASSERT (local_got_refcounts != NULL);
2700 local_got_refcounts[-1]--;
2701 break;
2702
2703 default:
2704 break;
2705 }
2706 }
2707
2708 return TRUE;
2709 }
2710
2711 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2712 entry but we found we will not create any. Called when we find we will
2713 not have any PLT for this symbol, by for example
2714 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2715 or elf_cris_size_dynamic_sections if no dynamic sections will be
2716 created (we're only linking static objects). */
2717
2718 static bfd_boolean
2719 elf_cris_adjust_gotplt_to_got (h, p)
2720 struct elf_cris_link_hash_entry *h;
2721 PTR p;
2722 {
2723 struct bfd_link_info *info = (struct bfd_link_info *) p;
2724
2725 if (h->root.root.type == bfd_link_hash_warning)
2726 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2727
2728 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2729 if (h->gotplt_refcount <= 0)
2730 return TRUE;
2731
2732 if (h->reg_got_refcount > 0)
2733 {
2734 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2735 Probably not necessary at this stage, but keeping them accurate
2736 helps avoiding surprises later. */
2737 h->root.got.refcount += h->gotplt_refcount;
2738 h->reg_got_refcount += h->gotplt_refcount;
2739 h->gotplt_refcount = 0;
2740 }
2741 else
2742 {
2743 /* No GOT entry for this symbol. We need to create one. */
2744 bfd *dynobj = elf_hash_table (info)->dynobj;
2745 asection *sgot;
2746 asection *srelgot;
2747
2748 BFD_ASSERT (dynobj != NULL);
2749 sgot = bfd_get_section_by_name (dynobj, ".got");
2750 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2751
2752 /* Put accurate refcounts there. */
2753 h->root.got.refcount += h->gotplt_refcount;
2754 h->reg_got_refcount = h->gotplt_refcount;
2755
2756 h->gotplt_refcount = 0;
2757
2758 /* We always have a .got and a .rela.got section if there were
2759 GOTPLT relocs in input. */
2760 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2761
2762 /* Allocate space in the .got section. */
2763 sgot->size += 4;
2764
2765 /* Allocate relocation space. */
2766 srelgot->size += sizeof (Elf32_External_Rela);
2767 }
2768
2769 return TRUE;
2770 }
2771
2772 /* Try to fold PLT entries with GOT entries. There are two cases when we
2773 want to do this:
2774
2775 - When all PLT references are GOTPLT references, and there are GOT
2776 references, and this is not the executable. We don't have to
2777 generate a PLT at all.
2778
2779 - When there are both (ordinary) PLT references and GOT references,
2780 and this isn't the executable.
2781 We want to make the PLT reference use the ordinary GOT entry rather
2782 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2783 since the GOT entry will have to be resolved at startup anyway.
2784
2785 Though the latter case is handled when room for the PLT is allocated,
2786 not here.
2787
2788 By folding into the GOT, we may need a round-trip to a PLT in the
2789 executable for calls, a loss in performance. Still, losing a
2790 reloc is a win in size and at least in start-up time.
2791
2792 Note that this function is called before symbols are forced local by
2793 version scripts. The differing cases are handled by
2794 elf_cris_hide_symbol. */
2795
2796 static bfd_boolean
2797 elf_cris_try_fold_plt_to_got (h, p)
2798 struct elf_cris_link_hash_entry *h;
2799 PTR p;
2800 {
2801 struct bfd_link_info *info = (struct bfd_link_info *) p;
2802
2803 /* If there are no GOT references for this symbol, we can't fold any
2804 other reference so there's nothing to do. Likewise if there are no
2805 PLT references; GOTPLT references included. */
2806 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2807 return TRUE;
2808
2809 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2810 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2811
2812 if (h->gotplt_refcount == h->root.plt.refcount)
2813 {
2814 /* The only PLT references are GOTPLT references, and there are GOT
2815 references. Convert PLT to GOT references. */
2816 if (! elf_cris_adjust_gotplt_to_got (h, info))
2817 return FALSE;
2818
2819 /* Clear the PLT references, so no PLT will be created. */
2820 h->root.plt.offset = (bfd_vma) -1;
2821 }
2822
2823 return TRUE;
2824 }
2825
2826 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2827 to use a GOT entry (and create one) rather than requiring a GOTPLT
2828 entry. */
2829
2830 static void
2831 elf_cris_hide_symbol (info, h, force_local)
2832 struct bfd_link_info *info;
2833 struct elf_link_hash_entry *h;
2834 bfd_boolean force_local;
2835 {
2836 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2837
2838 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2839 }
2840
2841 /* Adjust a symbol defined by a dynamic object and referenced by a
2842 regular object. The current definition is in some section of the
2843 dynamic object, but we're not including those sections. We have to
2844 change the definition to something the rest of the link can
2845 understand. */
2846
2847 static bfd_boolean
2848 elf_cris_adjust_dynamic_symbol (info, h)
2849 struct bfd_link_info *info;
2850 struct elf_link_hash_entry *h;
2851 {
2852 bfd *dynobj;
2853 asection *s;
2854 bfd_size_type plt_entry_size;
2855
2856 dynobj = elf_hash_table (info)->dynobj;
2857
2858 /* Make sure we know what is going on here. */
2859 BFD_ASSERT (dynobj != NULL
2860 && (h->needs_plt
2861 || h->u.weakdef != NULL
2862 || (h->def_dynamic
2863 && h->ref_regular
2864 && !h->def_regular)));
2865
2866 plt_entry_size
2867 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2868 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2869
2870 /* If this is a function, put it in the procedure linkage table. We
2871 will fill in the contents of the procedure linkage table later,
2872 when we know the address of the .got section. */
2873 if (h->type == STT_FUNC
2874 || h->needs_plt)
2875 {
2876 /* If we link a program (not a DSO), we'll get rid of unnecessary
2877 PLT entries; we point to the actual symbols -- even for pic
2878 relocs, because a program built with -fpic should have the same
2879 result as one built without -fpic, specifically considering weak
2880 symbols.
2881 FIXME: m68k and i386 differ here, for unclear reasons. */
2882 if (! info->shared
2883 && !h->def_dynamic)
2884 {
2885 /* This case can occur if we saw a PLT reloc in an input file,
2886 but the symbol was not defined by a dynamic object. In such
2887 a case, we don't actually need to build a procedure linkage
2888 table, and we can just do an absolute or PC reloc instead, or
2889 change a .got.plt index to a .got index for GOTPLT relocs. */
2890 BFD_ASSERT (h->needs_plt);
2891 h->needs_plt = 0;
2892 h->plt.offset = (bfd_vma) -1;
2893 return
2894 elf_cris_adjust_gotplt_to_got ((struct
2895 elf_cris_link_hash_entry *) h,
2896 info);
2897 }
2898
2899 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2900 where a pointer-equivalent symbol was unimportant (i.e. more
2901 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2902 of the PLT. We can't for the executable, because the GOT
2903 entries will point to the PLT there (and be constant). */
2904 if (info->shared
2905 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2906 h, info))
2907 return FALSE;
2908
2909 /* GC or folding may have rendered this entry unused. */
2910 if (h->plt.refcount <= 0)
2911 {
2912 h->needs_plt = 0;
2913 h->plt.offset = (bfd_vma) -1;
2914 return TRUE;
2915 }
2916
2917 /* Make sure this symbol is output as a dynamic symbol. */
2918 if (h->dynindx == -1)
2919 {
2920 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2921 return FALSE;
2922 }
2923
2924 s = bfd_get_section_by_name (dynobj, ".plt");
2925 BFD_ASSERT (s != NULL);
2926
2927 /* If this is the first .plt entry, make room for the special
2928 first entry. */
2929 if (s->size == 0)
2930 s->size += plt_entry_size;
2931
2932 /* If this symbol is not defined in a regular file, and we are
2933 not generating a shared library, then set the symbol to this
2934 location in the .plt. */
2935 if (!info->shared
2936 && !h->def_regular)
2937 {
2938 h->root.u.def.section = s;
2939 h->root.u.def.value = s->size;
2940 }
2941
2942 /* If there's already a GOT entry, use that, not a .got.plt. A
2943 GOT field still has a reference count when we get here; it's
2944 not yet changed to an offset. We can't do this for an
2945 executable, because then the reloc associated with the PLT
2946 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2947 this to elf_cris_try_fold_plt_to_got. */
2948 if (info->shared && h->got.refcount > 0)
2949 {
2950 h->got.refcount += h->plt.refcount;
2951
2952 /* Mark the PLT offset to use the GOT entry by setting the low
2953 bit in the plt offset; it is always a multiple of
2954 plt_entry_size (which is at least a multiple of 2). */
2955 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2956
2957 /* Change the PLT refcount to an offset. */
2958 h->plt.offset = s->size;
2959
2960 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2961 that the got entry should be used instead. */
2962 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2963 h)->gotplt_offset == 0);
2964
2965 /* Make room for this entry. */
2966 s->size += plt_entry_size;
2967
2968 return TRUE;
2969 }
2970
2971 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2972 h->plt.offset = s->size;
2973
2974 /* Make room for this entry. */
2975 s->size += plt_entry_size;
2976
2977 /* We also need to make an entry in the .got.plt section, which
2978 will be placed in the .got section by the linker script. */
2979 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2980 = elf_cris_hash_table (info)->next_gotplt_entry;
2981 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2982
2983 s = bfd_get_section_by_name (dynobj, ".got.plt");
2984 BFD_ASSERT (s != NULL);
2985 s->size += 4;
2986
2987 /* We also need to make an entry in the .rela.plt section. */
2988
2989 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2990 BFD_ASSERT (s != NULL);
2991 s->size += sizeof (Elf32_External_Rela);
2992
2993 return TRUE;
2994 }
2995
2996 /* Reinitialize the plt offset now that it is not used as a reference
2997 count any more. */
2998 h->plt.offset = (bfd_vma) -1;
2999
3000 /* If this is a weak symbol, and there is a real definition, the
3001 processor independent code will have arranged for us to see the
3002 real definition first, and we can just use the same value. */
3003 if (h->u.weakdef != NULL)
3004 {
3005 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3006 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3007 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3008 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3009 return TRUE;
3010 }
3011
3012 /* This is a reference to a symbol defined by a dynamic object which
3013 is not a function. */
3014
3015 /* If we are creating a shared library, we must presume that the
3016 only references to the symbol are via the global offset table.
3017 For such cases we need not do anything here; the relocations will
3018 be handled correctly by relocate_section. */
3019 if (info->shared)
3020 return TRUE;
3021
3022 /* If there are no references to this symbol that do not use the
3023 GOT, we don't need to generate a copy reloc. */
3024 if (!h->non_got_ref)
3025 return TRUE;
3026
3027 if (h->size == 0)
3028 {
3029 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3030 h->root.root.string);
3031 return TRUE;
3032 }
3033
3034 /* We must allocate the symbol in our .dynbss section, which will
3035 become part of the .bss section of the executable. There will be
3036 an entry for this symbol in the .dynsym section. The dynamic
3037 object will contain position independent code, so all references
3038 from the dynamic object to this symbol will go through the global
3039 offset table. The dynamic linker will use the .dynsym entry to
3040 determine the address it must put in the global offset table, so
3041 both the dynamic object and the regular object will refer to the
3042 same memory location for the variable. */
3043
3044 s = bfd_get_section_by_name (dynobj, ".dynbss");
3045 BFD_ASSERT (s != NULL);
3046
3047 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3048 copy the initial value out of the dynamic object and into the
3049 runtime process image. We need to remember the offset into the
3050 .rela.bss section we are going to use. */
3051 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3052 {
3053 asection *srel;
3054
3055 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3056 BFD_ASSERT (srel != NULL);
3057 srel->size += sizeof (Elf32_External_Rela);
3058 h->needs_copy = 1;
3059 }
3060
3061 return _bfd_elf_adjust_dynamic_copy (h, s);
3062 }
3063
3064 /* Adjust our "subclass" elements for an indirect symbol. */
3065
3066 static void
3067 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3068 struct elf_link_hash_entry *dir,
3069 struct elf_link_hash_entry *ind)
3070 {
3071 struct elf_cris_link_hash_entry *edir, *eind;
3072
3073 edir = (struct elf_cris_link_hash_entry *) dir;
3074 eind = (struct elf_cris_link_hash_entry *) ind;
3075
3076 /* Only indirect symbols are replaced; we're not interested in
3077 updating any of EIND's fields for other symbols. */
3078 if (eind->root.root.type != bfd_link_hash_indirect)
3079 {
3080 /* Still, we need to copy flags for e.g. weak definitions. */
3081 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3082 return;
3083 }
3084
3085 BFD_ASSERT (edir->pcrel_relocs_copied == NULL);
3086 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3087
3088 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3089 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3090 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3091 XMOVE (gotplt_refcount);
3092 XMOVE (gotplt_offset);
3093 XMOVE (reg_got_refcount);
3094 XMOVE (tprel_refcount);
3095 XMOVE (dtp_refcount);
3096 #undef XMOVE
3097 #undef XMOVOPZ
3098
3099 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3100 }
3101
3102 /* Look through the relocs for a section during the first phase. */
3103
3104 static bfd_boolean
3105 cris_elf_check_relocs (abfd, info, sec, relocs)
3106 bfd *abfd;
3107 struct bfd_link_info *info;
3108 asection *sec;
3109 const Elf_Internal_Rela *relocs;
3110 {
3111 bfd *dynobj;
3112 Elf_Internal_Shdr *symtab_hdr;
3113 struct elf_link_hash_entry **sym_hashes;
3114 bfd_signed_vma *local_got_refcounts;
3115 const Elf_Internal_Rela *rel;
3116 const Elf_Internal_Rela *rel_end;
3117 asection *sgot;
3118 asection *srelgot;
3119 asection *sreloc;
3120
3121 if (info->relocatable)
3122 return TRUE;
3123
3124 dynobj = elf_hash_table (info)->dynobj;
3125 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3126 sym_hashes = elf_sym_hashes (abfd);
3127 local_got_refcounts = elf_local_got_refcounts (abfd);
3128
3129 sgot = NULL;
3130 srelgot = NULL;
3131 sreloc = NULL;
3132
3133 rel_end = relocs + sec->reloc_count;
3134 for (rel = relocs; rel < rel_end; rel++)
3135 {
3136 struct elf_link_hash_entry *h;
3137 unsigned long r_symndx;
3138 enum elf_cris_reloc_type r_type;
3139 bfd_signed_vma got_element_size = 4;
3140 unsigned long r_symndx_lgot = INT_MAX;
3141
3142 r_symndx = ELF32_R_SYM (rel->r_info);
3143 if (r_symndx < symtab_hdr->sh_info)
3144 {
3145 h = NULL;
3146 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3147 }
3148 else
3149 {
3150 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3151 while (h->root.type == bfd_link_hash_indirect
3152 || h->root.type == bfd_link_hash_warning)
3153 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3154 }
3155
3156 r_type = ELF32_R_TYPE (rel->r_info);
3157
3158 /* Some relocs require linker-created sections; we need to hang them
3159 on the first input bfd we found that contained dynamic relocs. */
3160 switch (r_type)
3161 {
3162 case R_CRIS_32_DTPREL:
3163 if ((sec->flags & SEC_ALLOC) == 0)
3164 /* This'd be a .dtpreld entry in e.g. debug info. We have
3165 several different switch statements below, but none of
3166 that is needed; we need no preparations for resolving
3167 R_CRIS_32_DTPREL into a non-allocated section (debug
3168 info), so let's just move on to the next
3169 relocation. */
3170 continue;
3171 /* Fall through. */
3172 case R_CRIS_16_DTPREL:
3173 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3174 entry at index 3. */
3175 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3176 elf_cris_hash_table (info)->next_gotplt_entry += 8;
3177 elf_cris_hash_table (info)->dtpmod_refcount++;
3178 /* Fall through. */
3179
3180 case R_CRIS_32_IE:
3181 case R_CRIS_32_GD:
3182 case R_CRIS_16_GOT_GD:
3183 case R_CRIS_32_GOT_GD:
3184 case R_CRIS_32_GOT_TPREL:
3185 case R_CRIS_16_GOT_TPREL:
3186 case R_CRIS_16_GOT:
3187 case R_CRIS_32_GOT:
3188 case R_CRIS_32_GOTREL:
3189 case R_CRIS_32_PLT_GOTREL:
3190 case R_CRIS_32_PLT_PCREL:
3191 case R_CRIS_16_GOTPLT:
3192 case R_CRIS_32_GOTPLT:
3193 if (dynobj == NULL)
3194 {
3195 elf_hash_table (info)->dynobj = dynobj = abfd;
3196
3197 /* We could handle this if we can get a handle on the
3198 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3199 that, we must insist on dynobj being a specific mach. */
3200 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3201 {
3202 (*_bfd_error_handler)
3203 (_("%B, section %A:\n v10/v32 compatible object %s"
3204 " must not contain a PIC relocation"),
3205 abfd, sec);
3206 return FALSE;
3207 }
3208
3209 /* Create the .got section, so we can assume it's always
3210 present whenever there's a dynobj. */
3211 if (!_bfd_elf_create_got_section (dynobj, info))
3212 return FALSE;
3213 }
3214
3215 if (sgot == NULL)
3216 sgot = bfd_get_section_by_name (dynobj, ".got");
3217
3218 if (local_got_refcounts == NULL)
3219 {
3220 bfd_size_type amt;
3221
3222 /* We use index local_got_refcounts[-1] to count all
3223 GOT-relative relocations that do not have explicit
3224 GOT entries. */
3225 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3226 amt *= sizeof (bfd_signed_vma);
3227 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3228 if (local_got_refcounts == NULL)
3229 return FALSE;
3230
3231 local_got_refcounts++;
3232 elf_local_got_refcounts (abfd) = local_got_refcounts;
3233 }
3234 break;
3235
3236 default:
3237 break;
3238 }
3239
3240 /* Some relocs require a global offset table (but perhaps not a
3241 specific GOT entry). */
3242 switch (r_type)
3243 {
3244 case R_CRIS_16_DTPREL:
3245 case R_CRIS_32_DTPREL:
3246 /* Not requesting .got.rela for an executable: the contents
3247 of the first entry is constant there. For a shared
3248 library, we need .got.rela for the R_CRIS_DTPMOD
3249 relocation at index 3. */
3250 if (!info->shared)
3251 break;
3252 /* Fall through. */
3253
3254 case R_CRIS_32_IE:
3255 case R_CRIS_32_GD:
3256 case R_CRIS_16_GOT_GD:
3257 case R_CRIS_32_GOT_GD:
3258 case R_CRIS_32_GOT_TPREL:
3259 case R_CRIS_16_GOT_TPREL:
3260 /* Fall through. */
3261
3262 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3263 entry only for local symbols. Unfortunately, we don't know
3264 until later on if there's a version script that forces the
3265 symbol local. We must have the .rela.got section in place
3266 before we know if the symbol looks global now, so we need
3267 to treat the reloc just like for R_CRIS_16_GOT and
3268 R_CRIS_32_GOT. */
3269 case R_CRIS_16_GOTPLT:
3270 case R_CRIS_32_GOTPLT:
3271 case R_CRIS_16_GOT:
3272 case R_CRIS_32_GOT:
3273 if (srelgot == NULL
3274 && (h != NULL || info->shared))
3275 {
3276 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3277 if (srelgot == NULL)
3278 {
3279 srelgot = bfd_make_section_with_flags (dynobj,
3280 ".rela.got",
3281 (SEC_ALLOC
3282 | SEC_LOAD
3283 | SEC_HAS_CONTENTS
3284 | SEC_IN_MEMORY
3285 | SEC_LINKER_CREATED
3286 | SEC_READONLY));
3287 if (srelgot == NULL
3288 || !bfd_set_section_alignment (dynobj, srelgot, 2))
3289 return FALSE;
3290 }
3291 }
3292 break;
3293
3294 default:
3295 break;
3296 }
3297
3298 /* Warn and error for invalid input. */
3299 switch (r_type)
3300 {
3301 case R_CRIS_32_IE:
3302 case R_CRIS_32_TPREL:
3303 case R_CRIS_16_TPREL:
3304 case R_CRIS_32_GD:
3305 if (info->shared)
3306 {
3307 (*_bfd_error_handler)
3308 (_("%B, section %A:\n relocation %s not valid"
3309 " in a shared object;"
3310 " typically an option mixup, recompile with -fPIC"),
3311 abfd,
3312 sec,
3313 cris_elf_howto_table[r_type].name);
3314 /* Don't return FALSE here; we want messages for all of
3315 these and the error behavior is ungraceful
3316 anyway. */
3317 }
3318 default:
3319 break;
3320 }
3321
3322 switch (r_type)
3323 {
3324 case R_CRIS_32_GD:
3325 case R_CRIS_16_GOT_GD:
3326 case R_CRIS_32_GOT_GD:
3327 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3328 got_element_size = 8;
3329 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3330 break;
3331
3332 case R_CRIS_16_DTPREL:
3333 case R_CRIS_32_DTPREL:
3334 /* These two just request for the constant-index
3335 module-local tls_index-sized GOT entry, which we add
3336 elsewhere. */
3337 break;
3338
3339 case R_CRIS_32_IE:
3340 case R_CRIS_32_GOT_TPREL:
3341 case R_CRIS_16_GOT_TPREL:
3342 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3343
3344 /* Those relocs also require that a DSO is of type
3345 Initial Exec. Like other targets, we don't reset this
3346 flag even if the relocs are GC:ed away. */
3347 if (info->shared)
3348 info->flags |= DF_STATIC_TLS;
3349 break;
3350
3351 /* Let's list the other assembler-generated TLS-relocs too,
3352 just to show that they're not forgotten. */
3353 case R_CRIS_16_TPREL:
3354 case R_CRIS_32_TPREL:
3355 default:
3356 break;
3357 }
3358
3359 switch (r_type)
3360 {
3361 case R_CRIS_16_GOTPLT:
3362 case R_CRIS_32_GOTPLT:
3363 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3364 entry) is eliminated. We can only do this for a non-local
3365 symbol. */
3366 if (h != NULL)
3367 {
3368 elf_cris_hash_entry (h)->gotplt_refcount++;
3369 goto handle_gotplt_reloc;
3370 }
3371 /* If h is NULL then this is a local symbol, and we must make a
3372 GOT entry for it, so handle it like a GOT reloc. */
3373 /* Fall through. */
3374
3375 case R_CRIS_32_IE:
3376 case R_CRIS_32_GD:
3377 case R_CRIS_16_GOT_GD:
3378 case R_CRIS_32_GOT_GD:
3379 case R_CRIS_32_GOT_TPREL:
3380 case R_CRIS_16_GOT_TPREL:
3381 case R_CRIS_16_GOT:
3382 case R_CRIS_32_GOT:
3383 /* This symbol requires a global offset table entry. */
3384 if (h != NULL)
3385 {
3386 if (h->got.refcount == 0)
3387 {
3388 /* Make sure this symbol is output as a dynamic symbol. */
3389 if (h->dynindx == -1)
3390 {
3391 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3392 return FALSE;
3393 }
3394 }
3395
3396 /* Update the sum of reloc counts for this symbol. */
3397 h->got.refcount++;
3398
3399 switch (r_type)
3400 {
3401 case R_CRIS_16_GOT:
3402 case R_CRIS_32_GOT:
3403 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3404 {
3405 /* Allocate space in the .got section. */
3406 sgot->size += got_element_size;
3407 /* Allocate relocation space. */
3408 srelgot->size += sizeof (Elf32_External_Rela);
3409 }
3410 elf_cris_hash_entry (h)->reg_got_refcount++;
3411 break;
3412
3413 case R_CRIS_32_GD:
3414 case R_CRIS_16_GOT_GD:
3415 case R_CRIS_32_GOT_GD:
3416 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3417 {
3418 /* Allocate space in the .got section. */
3419 sgot->size += got_element_size;
3420 /* Allocate relocation space. */
3421 srelgot->size += sizeof (Elf32_External_Rela);
3422 }
3423 elf_cris_hash_entry (h)->dtp_refcount++;
3424 break;
3425
3426 case R_CRIS_32_IE:
3427 case R_CRIS_32_GOT_TPREL:
3428 case R_CRIS_16_GOT_TPREL:
3429 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3430 {
3431 /* Allocate space in the .got section. */
3432 sgot->size += got_element_size;
3433 /* Allocate relocation space. */
3434 srelgot->size += sizeof (Elf32_External_Rela);
3435 }
3436 elf_cris_hash_entry (h)->tprel_refcount++;
3437 break;
3438
3439 default:
3440 BFD_FAIL ();
3441 break;
3442 }
3443 }
3444 else
3445 {
3446 /* This is a global offset table entry for a local symbol. */
3447 if (local_got_refcounts[r_symndx_lgot] == 0)
3448 {
3449 sgot->size += got_element_size;
3450 if (info->shared)
3451 {
3452 /* If we are generating a shared object, we need
3453 to output a R_CRIS_RELATIVE reloc so that the
3454 dynamic linker can adjust this GOT entry.
3455 Similarly for non-regular got entries. */
3456 srelgot->size += sizeof (Elf32_External_Rela);
3457 }
3458 }
3459 /* Update the reloc-specific count. */
3460 local_got_refcounts[r_symndx_lgot]++;
3461
3462 /* This one is the sum of all the others. */
3463 local_got_refcounts[r_symndx]++;
3464 }
3465 break;
3466
3467 case R_CRIS_16_DTPREL:
3468 case R_CRIS_32_DTPREL:
3469 case R_CRIS_32_GOTREL:
3470 /* This reference requires a global offset table.
3471 FIXME: The actual refcount isn't used currently; the .got
3472 section can't be removed if there were any references in the
3473 input. */
3474 local_got_refcounts[-1]++;
3475 break;
3476
3477 handle_gotplt_reloc:
3478
3479 case R_CRIS_32_PLT_GOTREL:
3480 /* This reference requires a global offset table. */
3481 local_got_refcounts[-1]++;
3482 /* Fall through. */
3483
3484 case R_CRIS_32_PLT_PCREL:
3485 /* This symbol requires a procedure linkage table entry. We
3486 actually build the entry in adjust_dynamic_symbol,
3487 because this might be a case of linking PIC code which is
3488 never referenced by a dynamic object, in which case we
3489 don't need to generate a procedure linkage table entry
3490 after all. */
3491
3492 /* Beware: if we'd check for visibility of the symbol here
3493 (and not marking the need for a PLT when non-visible), we'd
3494 get into trouble with keeping handling consistent with
3495 regards to relocs found before definition and GOTPLT
3496 handling. Eliminable PLT entries will be dealt with later
3497 anyway. */
3498 if (h == NULL)
3499 continue;
3500
3501 h->needs_plt = 1;
3502 h->plt.refcount++;
3503 break;
3504
3505 case R_CRIS_8:
3506 case R_CRIS_16:
3507 case R_CRIS_32:
3508 /* Let's help debug shared library creation. Any of these
3509 relocs *can* be used in shared libs, but pages containing
3510 them cannot be shared, so they're not appropriate for
3511 common use. Don't warn for sections we don't care about,
3512 such as debug sections or non-constant sections. We
3513 can't help tables of (global) function pointers, for
3514 example, though they must be emitted in a (writable) data
3515 section to avoid having impure text sections. */
3516 if (info->shared
3517 && (sec->flags & SEC_ALLOC) != 0
3518 && (sec->flags & SEC_READONLY) != 0)
3519 {
3520 /* FIXME: How do we make this optionally a warning only? */
3521 (*_bfd_error_handler)
3522 (_("%B, section %A:\n relocation %s should not"
3523 " be used in a shared object; recompile with -fPIC"),
3524 abfd,
3525 sec,
3526 cris_elf_howto_table[r_type].name);
3527 }
3528 if (h != NULL)
3529 {
3530 h->non_got_ref = 1;
3531
3532 /* Make sure a plt entry is created for this symbol if it
3533 turns out to be a function defined by a dynamic object. */
3534 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3535 h->plt.refcount++;
3536 }
3537
3538 /* If we are creating a shared library and this is not a local
3539 symbol, we need to copy the reloc into the shared library.
3540 However when linking with -Bsymbolic and this is a global
3541 symbol which is defined in an object we are including in the
3542 link (i.e., DEF_REGULAR is set), then we can resolve the
3543 reloc directly. At this point we have not seen all the input
3544 files, so it is possible that DEF_REGULAR is not set now but
3545 will be set later (it is never cleared). In case of a weak
3546 definition, DEF_REGULAR may be cleared later by a strong
3547 definition in a shared library. We account for that
3548 possibility below by storing information in the relocs_copied
3549 field of the hash table entry. A similar situation occurs
3550 when creating shared libraries and symbol visibility changes
3551 render the symbol local. */
3552
3553 /* No need to do anything if we're not creating a shared object. */
3554 if (! info->shared)
3555 break;
3556
3557 /* We don't need to handle relocs into sections not going into
3558 the "real" output. */
3559 if ((sec->flags & SEC_ALLOC) == 0)
3560 break;
3561
3562 /* We may need to create a reloc section in the dynobj and made room
3563 for this reloc. */
3564 if (sreloc == NULL)
3565 {
3566 sreloc = _bfd_elf_make_dynamic_reloc_section
3567 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3568
3569 if (sreloc == NULL)
3570 return FALSE;
3571 }
3572
3573 if (sec->flags & SEC_READONLY)
3574 info->flags |= DF_TEXTREL;
3575
3576 sreloc->size += sizeof (Elf32_External_Rela);
3577 break;
3578
3579 case R_CRIS_8_PCREL:
3580 case R_CRIS_16_PCREL:
3581 case R_CRIS_32_PCREL:
3582 if (h != NULL)
3583 {
3584 h->non_got_ref = 1;
3585
3586 /* Make sure a plt entry is created for this symbol if it
3587 turns out to be a function defined by a dynamic object. */
3588 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3589 h->plt.refcount++;
3590 }
3591
3592 /* If we are creating a shared library and this is not a local
3593 symbol, we need to copy the reloc into the shared library.
3594 However when linking with -Bsymbolic and this is a global
3595 symbol which is defined in an object we are including in the
3596 link (i.e., DEF_REGULAR is set), then we can resolve the
3597 reloc directly. At this point we have not seen all the input
3598 files, so it is possible that DEF_REGULAR is not set now but
3599 will be set later (it is never cleared). In case of a weak
3600 definition, DEF_REGULAR may be cleared later by a strong
3601 definition in a shared library. We account for that
3602 possibility below by storing information in the relocs_copied
3603 field of the hash table entry. A similar situation occurs
3604 when creating shared libraries and symbol visibility changes
3605 render the symbol local. */
3606
3607 /* No need to do anything if we're not creating a shared object. */
3608 if (! info->shared)
3609 break;
3610
3611 /* We don't need to handle relocs into sections not going into
3612 the "real" output. */
3613 if ((sec->flags & SEC_ALLOC) == 0)
3614 break;
3615
3616 /* If the symbol is local, then we know already we can
3617 eliminate the reloc. */
3618 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3619 break;
3620
3621 /* If this is with -Bsymbolic and the symbol isn't weak, and
3622 is defined by an ordinary object (the ones we include in
3623 this shared library) then we can also eliminate the
3624 reloc. See comment above for more eliminable cases which
3625 we can't identify at this time. */
3626 if (info->symbolic
3627 && h->root.type != bfd_link_hash_defweak
3628 && h->def_regular)
3629 break;
3630
3631 /* We may need to create a reloc section in the dynobj and made room
3632 for this reloc. */
3633 if (sreloc == NULL)
3634 {
3635 sreloc = _bfd_elf_make_dynamic_reloc_section
3636 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3637
3638 if (sreloc == NULL)
3639 return FALSE;
3640 }
3641
3642 sreloc->size += sizeof (Elf32_External_Rela);
3643
3644 /* We count the number of PC relative relocations we have
3645 entered for this symbol, so that we can discard them
3646 again if the symbol is later defined by a regular object.
3647 We know that h is really a pointer to an
3648 elf_cris_link_hash_entry. */
3649 {
3650 struct elf_cris_link_hash_entry *eh;
3651 struct elf_cris_pcrel_relocs_copied *p;
3652
3653 eh = elf_cris_hash_entry (h);
3654
3655 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3656 if (p->section == sreloc)
3657 break;
3658
3659 if (p == NULL)
3660 {
3661 p = ((struct elf_cris_pcrel_relocs_copied *)
3662 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3663 if (p == NULL)
3664 return FALSE;
3665 p->next = eh->pcrel_relocs_copied;
3666 eh->pcrel_relocs_copied = p;
3667 p->section = sreloc;
3668 p->count = 0;
3669 p->r_type = r_type;
3670 }
3671
3672 ++p->count;
3673 }
3674 break;
3675
3676 /* This relocation describes the C++ object vtable hierarchy.
3677 Reconstruct it for later use during GC. */
3678 case R_CRIS_GNU_VTINHERIT:
3679 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3680 return FALSE;
3681 break;
3682
3683 /* This relocation describes which C++ vtable entries are actually
3684 used. Record for later use during GC. */
3685 case R_CRIS_GNU_VTENTRY:
3686 BFD_ASSERT (h != NULL);
3687 if (h != NULL
3688 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3689 return FALSE;
3690 break;
3691
3692 case R_CRIS_16_TPREL:
3693 case R_CRIS_32_TPREL:
3694 /* Already warned above, when necessary. */
3695 break;
3696
3697 default:
3698 /* Other relocs do not appear here. */
3699 bfd_set_error (bfd_error_bad_value);
3700 return FALSE;
3701 }
3702 }
3703
3704 return TRUE;
3705 }
3706
3707 /* Set the sizes of the dynamic sections. */
3708
3709 static bfd_boolean
3710 elf_cris_size_dynamic_sections (output_bfd, info)
3711 bfd *output_bfd ATTRIBUTE_UNUSED;
3712 struct bfd_link_info *info;
3713 {
3714 bfd *dynobj;
3715 asection *s;
3716 bfd_boolean plt;
3717 bfd_boolean relocs;
3718
3719 dynobj = elf_hash_table (info)->dynobj;
3720 BFD_ASSERT (dynobj != NULL);
3721
3722 if (elf_hash_table (info)->dynamic_sections_created)
3723 {
3724 /* Set the contents of the .interp section to the interpreter. */
3725 if (info->executable)
3726 {
3727 s = bfd_get_section_by_name (dynobj, ".interp");
3728 BFD_ASSERT (s != NULL);
3729 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3730 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3731 }
3732 }
3733 else
3734 {
3735 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3736 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3737 elf_cris_adjust_gotplt_to_got,
3738 (PTR) info);
3739
3740 /* We may have created entries in the .rela.got section.
3741 However, if we are not creating the dynamic sections, we will
3742 not actually use these entries. Reset the size of .rela.got,
3743 which will cause it to get stripped from the output file
3744 below. */
3745 s = bfd_get_section_by_name (dynobj, ".rela.got");
3746 if (s != NULL)
3747 s->size = 0;
3748 }
3749
3750 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3751 relative relocs against symbols defined in a regular object. We
3752 allocated space for them in the check_relocs routine, but we will not
3753 fill them in in the relocate_section routine. We also discard space
3754 for relocs that have become for local symbols due to symbol
3755 visibility changes. For programs, we discard space for relocs for
3756 symbols not referenced by any dynamic object. */
3757 if (info->shared)
3758 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3759 elf_cris_discard_excess_dso_dynamics,
3760 (PTR) info);
3761 else
3762 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3763 elf_cris_discard_excess_program_dynamics,
3764 (PTR) info);
3765
3766 /* The check_relocs and adjust_dynamic_symbol entry points have
3767 determined the sizes of the various dynamic sections. Allocate
3768 memory for them. */
3769 plt = FALSE;
3770 relocs = FALSE;
3771 for (s = dynobj->sections; s != NULL; s = s->next)
3772 {
3773 const char *name;
3774
3775 if ((s->flags & SEC_LINKER_CREATED) == 0)
3776 continue;
3777
3778 /* It's OK to base decisions on the section name, because none
3779 of the dynobj section names depend upon the input files. */
3780 name = bfd_get_section_name (dynobj, s);
3781
3782 if (strcmp (name, ".plt") == 0)
3783 {
3784 /* Remember whether there is a PLT. */
3785 plt = s->size != 0;
3786 }
3787 else if (strcmp (name, ".got.plt") == 0)
3788 {
3789 /* The .got.plt contains the .got header as well as the
3790 actual .got.plt contents. The .got header may contain a
3791 R_CRIS_DTPMOD entry at index 3. */
3792 s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3793 ? 8 : 0;
3794 }
3795 else if (CONST_STRNEQ (name, ".rela"))
3796 {
3797 if (strcmp (name, ".rela.got") == 0
3798 && elf_cris_hash_table (info)->dtpmod_refcount != 0
3799 && info->shared)
3800 s->size += sizeof (Elf32_External_Rela);
3801
3802 if (s->size != 0)
3803 {
3804 /* Remember whether there are any reloc sections other
3805 than .rela.plt. */
3806 if (strcmp (name, ".rela.plt") != 0)
3807 relocs = TRUE;
3808
3809 /* We use the reloc_count field as a counter if we need
3810 to copy relocs into the output file. */
3811 s->reloc_count = 0;
3812 }
3813 }
3814 else if (! CONST_STRNEQ (name, ".got")
3815 && strcmp (name, ".dynbss") != 0)
3816 {
3817 /* It's not one of our sections, so don't allocate space. */
3818 continue;
3819 }
3820
3821 if (s->size == 0)
3822 {
3823 /* If we don't need this section, strip it from the
3824 output file. This is mostly to handle .rela.bss and
3825 .rela.plt. We must create both sections in
3826 create_dynamic_sections, because they must be created
3827 before the linker maps input sections to output
3828 sections. The linker does that before
3829 adjust_dynamic_symbol is called, and it is that
3830 function which decides whether anything needs to go
3831 into these sections. */
3832 s->flags |= SEC_EXCLUDE;
3833 continue;
3834 }
3835
3836 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3837 continue;
3838
3839 /* Allocate memory for the section contents. We use bfd_zalloc here
3840 in case unused entries are not reclaimed before the section's
3841 contents are written out. This should not happen, but this way
3842 if it does, we will not write out garbage. For reloc sections,
3843 this will make entries have the type R_CRIS_NONE. */
3844 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3845 if (s->contents == NULL)
3846 return FALSE;
3847 }
3848
3849 if (elf_hash_table (info)->dynamic_sections_created)
3850 {
3851 /* Add some entries to the .dynamic section. We fill in the
3852 values later, in elf_cris_finish_dynamic_sections, but we
3853 must add the entries now so that we get the correct size for
3854 the .dynamic section. The DT_DEBUG entry is filled in by the
3855 dynamic linker and used by the debugger. */
3856 #define add_dynamic_entry(TAG, VAL) \
3857 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3858
3859 if (!info->shared)
3860 {
3861 if (!add_dynamic_entry (DT_DEBUG, 0))
3862 return FALSE;
3863 }
3864
3865 if (plt)
3866 {
3867 if (!add_dynamic_entry (DT_PLTGOT, 0)
3868 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3869 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3870 || !add_dynamic_entry (DT_JMPREL, 0))
3871 return FALSE;
3872 }
3873
3874 if (relocs)
3875 {
3876 if (!add_dynamic_entry (DT_RELA, 0)
3877 || !add_dynamic_entry (DT_RELASZ, 0)
3878 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3879 return FALSE;
3880 }
3881
3882 if ((info->flags & DF_TEXTREL) != 0)
3883 {
3884 if (!add_dynamic_entry (DT_TEXTREL, 0))
3885 return FALSE;
3886 info->flags |= DF_TEXTREL;
3887 }
3888 }
3889 #undef add_dynamic_entry
3890
3891 return TRUE;
3892 }
3893
3894 /* This function is called via elf_cris_link_hash_traverse if we are
3895 creating a shared object. In the -Bsymbolic case, it discards the
3896 space allocated to copy PC relative relocs against symbols which
3897 are defined in regular objects. For the normal non-symbolic case,
3898 we also discard space for relocs that have become local due to
3899 symbol visibility changes. We allocated space for them in the
3900 check_relocs routine, but we won't fill them in in the
3901 relocate_section routine. */
3902
3903 static bfd_boolean
3904 elf_cris_discard_excess_dso_dynamics (h, inf)
3905 struct elf_cris_link_hash_entry *h;
3906 PTR inf;
3907 {
3908 struct elf_cris_pcrel_relocs_copied *s;
3909 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3910
3911 if (h->root.root.type == bfd_link_hash_warning)
3912 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3913
3914 /* If a symbol has been forced local or we have found a regular
3915 definition for the symbolic link case, then we won't be needing
3916 any relocs. */
3917 if (h->root.def_regular
3918 && (h->root.forced_local
3919 || info->symbolic))
3920 {
3921 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3922 s->section->size -= s->count * sizeof (Elf32_External_Rela);
3923
3924 return TRUE;
3925 }
3926
3927 /* If we have accounted for PC-relative relocs for read-only
3928 sections, now is the time to warn for them. We can't do it in
3929 cris_elf_check_relocs, because we don't know the status of all
3930 symbols at that time (and it's common to force symbols local
3931 late). */
3932
3933 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3934 {
3935 BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3936
3937 /* FIXME: How do we make this optionally a warning only? */
3938 (*_bfd_error_handler)
3939 (_("%B, section `%A', to symbol `%s':\n"
3940 " relocation %s should not be used"
3941 " in a shared object; recompile with -fPIC"),
3942 s->section->owner,
3943 s->section,
3944 h->root.root.root.string,
3945 cris_elf_howto_table[s->r_type].name);
3946
3947 info->flags |= DF_TEXTREL;
3948 }
3949
3950 return TRUE;
3951 }
3952
3953 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3954 creating a shared object. We discard space for relocs for symbols put
3955 in the .got, but which we found we do not have to resolve at run-time. */
3956
3957 static bfd_boolean
3958 elf_cris_discard_excess_program_dynamics (h, inf)
3959 struct elf_cris_link_hash_entry *h;
3960 PTR inf;
3961 {
3962 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3963
3964 if (h->root.root.type == bfd_link_hash_warning)
3965 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3966
3967 /* If we're not creating a shared library and have a symbol which is
3968 referred to by .got references, but the symbol is defined locally,
3969 (or rather, not defined by a DSO) then lose the reloc for the .got
3970 (don't allocate room for it). Likewise for relocs for something
3971 for which we create a PLT. */
3972 if (!h->root.def_dynamic
3973 || h->root.plt.refcount > 0)
3974 {
3975 if (h->reg_got_refcount > 0
3976 /* The size of this section is only valid and in sync with the
3977 various reference counts if we do dynamic; don't decrement it
3978 otherwise. */
3979 && elf_hash_table (info)->dynamic_sections_created)
3980 {
3981 bfd *dynobj = elf_hash_table (info)->dynobj;
3982 asection *srelgot;
3983
3984 BFD_ASSERT (dynobj != NULL);
3985
3986 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3987
3988 BFD_ASSERT (srelgot != NULL);
3989
3990 srelgot->size -= sizeof (Elf32_External_Rela);
3991 }
3992
3993 /* If the locally-defined symbol isn't used by a DSO, then we don't
3994 have to export it as a dynamic symbol. This was already done for
3995 functions; doing this for all symbols would presumably not
3996 introduce new problems. Of course we don't do this if we're
3997 exporting all dynamic symbols. */
3998 if (! info->export_dynamic
3999 && h->root.dynindx != -1
4000 && !h->root.def_dynamic
4001 && !h->root.ref_dynamic)
4002 {
4003 h->root.dynindx = -1;
4004 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4005 h->root.dynstr_index);
4006 }
4007 }
4008
4009 return TRUE;
4010 }
4011
4012 /* Reject a file depending on presence and expectation of prefixed
4013 underscores on symbols. */
4014
4015 static bfd_boolean
4016 cris_elf_object_p (abfd)
4017 bfd *abfd;
4018 {
4019 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4020 return FALSE;
4021
4022 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4023 return (bfd_get_symbol_leading_char (abfd) == '_');
4024 else
4025 return (bfd_get_symbol_leading_char (abfd) == 0);
4026 }
4027
4028 /* Mark presence or absence of leading underscore. Set machine type
4029 flags from mach type. */
4030
4031 static void
4032 cris_elf_final_write_processing (abfd, linker)
4033 bfd *abfd;
4034 bfd_boolean linker ATTRIBUTE_UNUSED;
4035 {
4036 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4037
4038 e_flags &= ~EF_CRIS_UNDERSCORE;
4039 if (bfd_get_symbol_leading_char (abfd) == '_')
4040 e_flags |= EF_CRIS_UNDERSCORE;
4041
4042 switch (bfd_get_mach (abfd))
4043 {
4044 case bfd_mach_cris_v0_v10:
4045 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4046 break;
4047
4048 case bfd_mach_cris_v10_v32:
4049 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4050 break;
4051
4052 case bfd_mach_cris_v32:
4053 e_flags |= EF_CRIS_VARIANT_V32;
4054 break;
4055
4056 default:
4057 _bfd_abort (__FILE__, __LINE__,
4058 _("Unexpected machine number"));
4059 }
4060
4061 elf_elfheader (abfd)->e_flags = e_flags;
4062 }
4063
4064 /* Set the mach type from e_flags value. */
4065
4066 static bfd_boolean
4067 cris_elf_set_mach_from_flags (abfd, flags)
4068 bfd *abfd;
4069 unsigned long flags;
4070 {
4071 switch (flags & EF_CRIS_VARIANT_MASK)
4072 {
4073 case EF_CRIS_VARIANT_ANY_V0_V10:
4074 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4075 break;
4076
4077 case EF_CRIS_VARIANT_V32:
4078 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4079 break;
4080
4081 case EF_CRIS_VARIANT_COMMON_V10_V32:
4082 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4083 break;
4084
4085 default:
4086 /* Since we don't recognize them, we obviously can't support them
4087 with this code; we'd have to require that all future handling
4088 would be optional. */
4089 bfd_set_error (bfd_error_wrong_format);
4090 return FALSE;
4091 }
4092
4093 return TRUE;
4094 }
4095
4096 /* Display the flags field. */
4097
4098 static bfd_boolean
4099 cris_elf_print_private_bfd_data (abfd, ptr)
4100 bfd *abfd;
4101 PTR ptr;
4102 {
4103 FILE *file = (FILE *) ptr;
4104
4105 BFD_ASSERT (abfd != NULL && ptr != NULL);
4106
4107 _bfd_elf_print_private_bfd_data (abfd, ptr);
4108
4109 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4110
4111 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4112 fprintf (file, _(" [symbols have a _ prefix]"));
4113 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4114 == EF_CRIS_VARIANT_COMMON_V10_V32)
4115 fprintf (file, _(" [v10 and v32]"));
4116 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4117 == EF_CRIS_VARIANT_V32)
4118 fprintf (file, _(" [v32]"));
4119
4120 fputc ('\n', file);
4121 return TRUE;
4122 }
4123
4124 /* Don't mix files with and without a leading underscore. */
4125
4126 static bfd_boolean
4127 cris_elf_merge_private_bfd_data (ibfd, obfd)
4128 bfd *ibfd;
4129 bfd *obfd;
4130 {
4131 int imach, omach;
4132
4133 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4134 return FALSE;
4135
4136 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4137 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4138 return TRUE;
4139
4140 imach = bfd_get_mach (ibfd);
4141
4142 if (! elf_flags_init (obfd))
4143 {
4144 /* This happens when ld starts out with a 'blank' output file. */
4145 elf_flags_init (obfd) = TRUE;
4146
4147 /* We ignore the linker-set mach, and instead set it according to
4148 the first input file. This would also happen if we could
4149 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4150 This allows us to keep the same linker config across
4151 cris(v0..v10) and crisv32. The drawback is that we can't force
4152 the output type, which might be a sane thing to do for a
4153 v10+v32 compatibility object. */
4154 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4155 return FALSE;
4156 }
4157
4158 if (bfd_get_symbol_leading_char (ibfd)
4159 != bfd_get_symbol_leading_char (obfd))
4160 {
4161 (*_bfd_error_handler)
4162 (bfd_get_symbol_leading_char (ibfd) == '_'
4163 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4164 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4165 ibfd);
4166 bfd_set_error (bfd_error_bad_value);
4167 return FALSE;
4168 }
4169
4170 omach = bfd_get_mach (obfd);
4171
4172 if (imach != omach)
4173 {
4174 /* We can get an incompatible combination only if either is
4175 bfd_mach_cris_v32, and the other one isn't compatible. */
4176 if ((imach == bfd_mach_cris_v32
4177 && omach != bfd_mach_cris_v10_v32)
4178 || (omach == bfd_mach_cris_v32
4179 && imach != bfd_mach_cris_v10_v32))
4180 {
4181 (*_bfd_error_handler)
4182 ((imach == bfd_mach_cris_v32)
4183 ? _("%B contains CRIS v32 code, incompatible"
4184 " with previous objects")
4185 : _("%B contains non-CRIS-v32 code, incompatible"
4186 " with previous objects"),
4187 ibfd);
4188 bfd_set_error (bfd_error_bad_value);
4189 return FALSE;
4190 }
4191
4192 /* We don't have to check the case where the input is compatible
4193 with v10 and v32, because the output is already known to be set
4194 to the other (compatible) mach. */
4195 if (omach == bfd_mach_cris_v10_v32
4196 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4197 return FALSE;
4198 }
4199
4200 return TRUE;
4201 }
4202
4203 /* Do side-effects of e_flags copying to obfd. */
4204
4205 static bfd_boolean
4206 cris_elf_copy_private_bfd_data (ibfd, obfd)
4207 bfd *ibfd;
4208 bfd *obfd;
4209 {
4210 /* Call the base function. */
4211 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4212 return FALSE;
4213
4214 /* If output is big-endian for some obscure reason, stop here. */
4215 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4216 return FALSE;
4217
4218 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4219 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4220 return TRUE;
4221
4222 /* Do what we really came here for. */
4223 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4224 }
4225
4226 static enum elf_reloc_type_class
4227 elf_cris_reloc_type_class (rela)
4228 const Elf_Internal_Rela *rela;
4229 {
4230 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4231 switch (r_type)
4232 {
4233 case R_CRIS_RELATIVE:
4234 return reloc_class_relative;
4235 case R_CRIS_JUMP_SLOT:
4236 return reloc_class_plt;
4237 case R_CRIS_COPY:
4238 return reloc_class_copy;
4239 default:
4240 return reloc_class_normal;
4241 }
4242 }
4243
4244 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4245 two GOT entries from three types with two different sizes. We handle
4246 it as a single entry, so we can use the regular offset-calculation
4247 machinery. */
4248
4249 static bfd_vma
4250 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4251 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4252 struct elf_link_hash_entry *hr,
4253 bfd *ibfd,
4254 unsigned long symndx)
4255 {
4256 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4257 bfd_vma eltsiz = 0;
4258
4259 /* We may have one regular GOT entry or up to two TLS GOT
4260 entries. */
4261 if (h == NULL)
4262 {
4263 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4264 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4265
4266 BFD_ASSERT (local_got_refcounts != NULL);
4267
4268 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4269 {
4270 /* We can't have a variable referred to both as a regular
4271 variable and through TLS relocs. */
4272 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4273 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4274 return 4;
4275 }
4276
4277 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4278 eltsiz += 8;
4279
4280 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4281 eltsiz += 4;
4282 }
4283 else
4284 {
4285 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4286 if (hh->reg_got_refcount > 0)
4287 {
4288 /* The actual error-on-input is emitted elsewhere. */
4289 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4290 return 4;
4291 }
4292
4293 if (hh->dtp_refcount > 0)
4294 eltsiz += 8;
4295
4296 if (hh->tprel_refcount > 0)
4297 eltsiz += 4;
4298 }
4299
4300 /* We're only called when h->got.refcount is non-zero, so we must
4301 have a non-zero size. */
4302 BFD_ASSERT (eltsiz != 0);
4303 return eltsiz;
4304 }
4305 \f
4306 #define ELF_ARCH bfd_arch_cris
4307 #define ELF_MACHINE_CODE EM_CRIS
4308 #define ELF_MAXPAGESIZE 0x2000
4309
4310 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4311 #define TARGET_LITTLE_NAME "elf32-cris"
4312 #define elf_symbol_leading_char 0
4313
4314 #define elf_info_to_howto_rel NULL
4315 #define elf_info_to_howto cris_info_to_howto_rela
4316 #define elf_backend_relocate_section cris_elf_relocate_section
4317 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4318 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4319 #define elf_backend_check_relocs cris_elf_check_relocs
4320 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4321 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4322
4323 #define elf_backend_can_gc_sections 1
4324 #define elf_backend_can_refcount 1
4325
4326 #define elf_backend_object_p cris_elf_object_p
4327 #define elf_backend_final_write_processing \
4328 cris_elf_final_write_processing
4329 #define bfd_elf32_bfd_print_private_bfd_data \
4330 cris_elf_print_private_bfd_data
4331 #define bfd_elf32_bfd_merge_private_bfd_data \
4332 cris_elf_merge_private_bfd_data
4333 #define bfd_elf32_bfd_copy_private_bfd_data \
4334 cris_elf_copy_private_bfd_data
4335
4336 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4337 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4338
4339 #define bfd_elf32_bfd_link_hash_table_create \
4340 elf_cris_link_hash_table_create
4341 #define elf_backend_adjust_dynamic_symbol \
4342 elf_cris_adjust_dynamic_symbol
4343 #define elf_backend_copy_indirect_symbol \
4344 elf_cris_copy_indirect_symbol
4345 #define elf_backend_size_dynamic_sections \
4346 elf_cris_size_dynamic_sections
4347 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4348 #define elf_backend_finish_dynamic_symbol \
4349 elf_cris_finish_dynamic_symbol
4350 #define elf_backend_finish_dynamic_sections \
4351 elf_cris_finish_dynamic_sections
4352 #define elf_backend_create_dynamic_sections \
4353 _bfd_elf_create_dynamic_sections
4354 #define bfd_elf32_bfd_final_link \
4355 bfd_elf_gc_common_final_link
4356 #define elf_backend_hide_symbol elf_cris_hide_symbol
4357 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4358
4359 #define elf_backend_want_got_plt 1
4360 #define elf_backend_plt_readonly 1
4361 #define elf_backend_want_plt_sym 0
4362 #define elf_backend_got_header_size 12
4363 #define elf_backend_got_elt_size elf_cris_got_elt_size
4364
4365 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4366 linking and libraries (if it's a win of any significance). Until then,
4367 take the easy route. */
4368 #define elf_backend_may_use_rel_p 0
4369 #define elf_backend_may_use_rela_p 1
4370 #define elf_backend_rela_normal 1
4371
4372 #include "elf32-target.h"
4373
4374 #undef TARGET_LITTLE_SYM
4375 #undef TARGET_LITTLE_NAME
4376 #undef elf_symbol_leading_char
4377
4378 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4379 #define TARGET_LITTLE_NAME "elf32-us-cris"
4380 #define elf_symbol_leading_char '_'
4381 #undef elf32_bed
4382 #define elf32_bed elf32_us_cris_bed
4383
4384 #include "elf32-target.h"
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