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PR ld/11843
[binutils.git] / bfd / elf32-cris.c
blob1783ae3b66c0e01dfd3d37badd3baafbb4a24d64
1 /* CRIS-specific support for 32-bit ELF.
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
3 2010 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 (*) (struct elf_link_hash_entry *, void *)) (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 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
895 == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL)
896
897 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
898 "parent class"). The .root reference is just a simple type
899 check on the argument. */
900
901 #define elf_cris_hash_entry(p) \
902 ((struct elf_cris_link_hash_entry *) (&(p)->root))
903
904 /* Create an entry in a CRIS ELF linker hash table. */
905
906 static struct bfd_hash_entry *
907 elf_cris_link_hash_newfunc (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 (bfd *abfd)
944 {
945 struct elf_cris_link_hash_table *ret;
946 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
947
948 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
949 if (ret == (struct elf_cris_link_hash_table *) NULL)
950 return NULL;
951
952 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
953 elf_cris_link_hash_newfunc,
954 sizeof (struct elf_cris_link_hash_entry),
955 CRIS_ELF_DATA))
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 (bfd *output_bfd ATTRIBUTE_UNUSED,
1031 struct bfd_link_info *info,
1032 bfd *input_bfd,
1033 asection *input_section,
1034 bfd_byte *contents,
1035 Elf_Internal_Rela *relocs,
1036 Elf_Internal_Sym *local_syms,
1037 asection **local_sections)
1038 {
1039 struct elf_cris_link_hash_table * htab;
1040 bfd *dynobj;
1041 Elf_Internal_Shdr *symtab_hdr;
1042 struct elf_link_hash_entry **sym_hashes;
1043 bfd_vma *local_got_offsets;
1044 asection *sgot;
1045 asection *splt;
1046 asection *sreloc;
1047 Elf_Internal_Rela *rel;
1048 Elf_Internal_Rela *relend;
1049 asection *srelgot;
1050
1051 htab = elf_cris_hash_table (info);
1052 if (htab == NULL)
1053 return FALSE;
1054
1055 dynobj = elf_hash_table (info)->dynobj;
1056 local_got_offsets = elf_local_got_offsets (input_bfd);
1057 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1058 sym_hashes = elf_sym_hashes (input_bfd);
1059 relend = relocs + input_section->reloc_count;
1060
1061 sgot = NULL;
1062 splt = NULL;
1063 sreloc = NULL;
1064 srelgot = NULL;
1065
1066 if (dynobj != NULL)
1067 {
1068 splt = bfd_get_section_by_name (dynobj, ".plt");
1069 sgot = bfd_get_section_by_name (dynobj, ".got");
1070 }
1071
1072 for (rel = relocs; rel < relend; rel ++)
1073 {
1074 reloc_howto_type *howto;
1075 unsigned long r_symndx;
1076 Elf_Internal_Sym *sym;
1077 asection *sec;
1078 struct elf_link_hash_entry *h;
1079 bfd_vma relocation;
1080 bfd_reloc_status_type r;
1081 const char *symname = NULL;
1082 enum elf_cris_reloc_type r_type;
1083
1084 r_type = ELF32_R_TYPE (rel->r_info);
1085
1086 if ( r_type == R_CRIS_GNU_VTINHERIT
1087 || r_type == R_CRIS_GNU_VTENTRY)
1088 continue;
1089
1090 r_symndx = ELF32_R_SYM (rel->r_info);
1091 howto = cris_elf_howto_table + r_type;
1092 h = NULL;
1093 sym = NULL;
1094 sec = NULL;
1095
1096 if (r_symndx < symtab_hdr->sh_info)
1097 {
1098 sym = local_syms + r_symndx;
1099 sec = local_sections [r_symndx];
1100 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1101
1102 symname = (bfd_elf_string_from_elf_section
1103 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1104 if (symname == NULL)
1105 symname = bfd_section_name (input_bfd, sec);
1106 }
1107 else
1108 {
1109 bfd_boolean warned;
1110 bfd_boolean unresolved_reloc;
1111
1112 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1113 r_symndx, symtab_hdr, sym_hashes,
1114 h, sec, relocation,
1115 unresolved_reloc, warned);
1116
1117 symname = h->root.root.string;
1118
1119 if (unresolved_reloc
1120 /* Perhaps we should detect the cases that
1121 sec->output_section is expected to be NULL like i386 and
1122 m68k, but apparently (and according to elfxx-ia64.c) all
1123 valid cases are where the symbol is defined in a shared
1124 object which we link dynamically against. This includes
1125 PLT relocs for which we've created a PLT entry and other
1126 relocs for which we're prepared to create dynamic
1127 relocations.
1128
1129 For now, new situations cause us to just err when
1130 sec->output_offset is NULL but the object with the symbol
1131 is *not* dynamically linked against. Thus this will
1132 automatically remind us so we can see if there are other
1133 valid cases we need to revisit. */
1134 && (sec->owner->flags & DYNAMIC) != 0)
1135 relocation = 0;
1136
1137 else if (h->root.type == bfd_link_hash_defined
1138 || h->root.type == bfd_link_hash_defweak)
1139 {
1140 /* Here follow the cases where the relocation value must
1141 be zero (or when further handling is simplified when
1142 zero). I can't claim to understand the various
1143 conditions and they weren't described in the files
1144 where I copied them from (elf32-m68k.c and
1145 elf32-i386.c), but let's mention examples of where
1146 they happen. FIXME: Perhaps define and use a
1147 dynamic_symbol_p function like ia64.
1148
1149 - When creating a shared library, we can have an
1150 ordinary relocation for a symbol defined in a shared
1151 library (perhaps the one we create). We then make
1152 the relocation value zero, as the value seen now will
1153 be added into the relocation addend in this shared
1154 library, but must be handled only at dynamic-link
1155 time. FIXME: Not sure this example covers the
1156 h->elf_link_hash_flags test, though it's there in
1157 other targets. */
1158 if (info->shared
1159 && ((! info->symbolic && h->dynindx != -1)
1160 || !h->def_regular)
1161 && (input_section->flags & SEC_ALLOC) != 0
1162 && (r_type == R_CRIS_8
1163 || r_type == R_CRIS_16
1164 || r_type == R_CRIS_32
1165 || r_type == R_CRIS_8_PCREL
1166 || r_type == R_CRIS_16_PCREL
1167 || r_type == R_CRIS_32_PCREL))
1168 relocation = 0;
1169 else if (!info->relocatable && unresolved_reloc)
1170 {
1171 _bfd_error_handler
1172 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1173 input_bfd,
1174 input_section,
1175 cris_elf_howto_table[r_type].name,
1176 symname);
1177 bfd_set_error (bfd_error_bad_value);
1178 return FALSE;
1179 }
1180 }
1181 }
1182
1183 if (sec != NULL && elf_discarded_section (sec))
1184 {
1185 /* For relocs against symbols from removed linkonce sections,
1186 or sections discarded by a linker script, we just want the
1187 section contents zeroed. Avoid any special processing. */
1188 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1189 rel->r_info = 0;
1190 rel->r_addend = 0;
1191 continue;
1192 }
1193
1194 if (info->relocatable)
1195 continue;
1196
1197 switch (r_type)
1198 {
1199 case R_CRIS_16_GOTPLT:
1200 case R_CRIS_32_GOTPLT:
1201 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1202 but we require a PLT, and the PLT handling will take care of
1203 filling in the PLT-specific GOT entry. For the GOT offset,
1204 calculate it as we do when filling it in for the .got.plt
1205 section. If we don't have a PLT, punt to GOT handling. */
1206 if (h != NULL
1207 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1208 {
1209 asection *sgotplt
1210 = bfd_get_section_by_name (dynobj, ".got.plt");
1211 bfd_vma got_offset;
1212
1213 BFD_ASSERT (h->dynindx != -1);
1214 BFD_ASSERT (sgotplt != NULL);
1215
1216 got_offset
1217 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1218
1219 relocation = got_offset;
1220 break;
1221 }
1222
1223 /* We didn't make a PLT entry for this symbol. Maybe everything is
1224 folded into the GOT. Other than folding, this happens when
1225 statically linking PIC code, or when using -Bsymbolic. Check
1226 that we instead have a GOT entry as done for us by
1227 elf_cris_adjust_dynamic_symbol, and drop through into the
1228 ordinary GOT cases. This must not happen for the
1229 executable, because any reference it does to a function
1230 that is satisfied by a DSO must generate a PLT. We assume
1231 these call-specific relocs don't address non-functions. */
1232 if (h != NULL
1233 && (h->got.offset == (bfd_vma) -1
1234 || (!info->shared
1235 && !(h->def_regular
1236 || (!h->def_dynamic
1237 && h->root.type == bfd_link_hash_undefweak)))))
1238 {
1239 (*_bfd_error_handler)
1240 ((h->got.offset == (bfd_vma) -1)
1241 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1242 " against symbol `%s'")
1243 : _("%B, section %A: No PLT for relocation %s"
1244 " against symbol `%s'"),
1245 input_bfd,
1246 input_section,
1247 cris_elf_howto_table[r_type].name,
1248 (symname != NULL && symname[0] != '\0'
1249 ? symname : _("[whose name is lost]")));
1250
1251 /* FIXME: Perhaps blaming input is not the right thing to
1252 do; this is probably an internal error. But it is true
1253 that we didn't like that particular input. */
1254 bfd_set_error (bfd_error_bad_value);
1255 return FALSE;
1256 }
1257 /* Fall through. */
1258
1259 /* The size of the actual relocation is not used here; we only
1260 fill in the GOT table here. */
1261 case R_CRIS_16_GOT:
1262 case R_CRIS_32_GOT:
1263 {
1264 bfd_vma off;
1265
1266 /* Note that despite using RELA relocations, the .got contents
1267 is always filled in with the link-relative relocation
1268 value; the addend. */
1269
1270 if (h != NULL)
1271 {
1272 off = h->got.offset;
1273 BFD_ASSERT (off != (bfd_vma) -1);
1274
1275 if (!elf_hash_table (info)->dynamic_sections_created
1276 || (! info->shared
1277 && (h->def_regular
1278 || h->type == STT_FUNC
1279 || h->needs_plt))
1280 || (info->shared
1281 && (info->symbolic || h->dynindx == -1)
1282 && h->def_regular))
1283 {
1284 /* This wasn't checked above for ! info->shared, but
1285 must hold there if we get here; the symbol must
1286 be defined in the regular program or be undefweak
1287 or be a function or otherwise need a PLT. */
1288 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1289 || info->shared
1290 || h->def_regular
1291 || h->type == STT_FUNC
1292 || h->needs_plt
1293 || h->root.type == bfd_link_hash_undefweak);
1294
1295 /* This is actually a static link, or it is a
1296 -Bsymbolic link and the symbol is defined locally,
1297 or is undefweak, or the symbol was forced to be
1298 local because of a version file, or we're not
1299 creating a dynamic object. We must initialize this
1300 entry in the global offset table. Since the offset
1301 must always be a multiple of 4, we use the least
1302 significant bit to record whether we have
1303 initialized it already.
1304
1305 If this GOT entry should be runtime-initialized, we
1306 will create a .rela.got relocation entry to
1307 initialize the value. This is done in the
1308 finish_dynamic_symbol routine. */
1309 if ((off & 1) != 0)
1310 off &= ~1;
1311 else
1312 {
1313 bfd_put_32 (output_bfd, relocation,
1314 sgot->contents + off);
1315 h->got.offset |= 1;
1316 }
1317 }
1318 }
1319 else
1320 {
1321 BFD_ASSERT (local_got_offsets != NULL
1322 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1323
1324 off = local_got_offsets[r_symndx];
1325
1326 /* The offset must always be a multiple of 4. We use
1327 the least significant bit to record whether we have
1328 already generated the necessary reloc. */
1329 if ((off & 1) != 0)
1330 off &= ~1;
1331 else
1332 {
1333 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1334
1335 if (info->shared)
1336 {
1337 Elf_Internal_Rela outrel;
1338 bfd_byte *loc;
1339
1340 if (srelgot == NULL)
1341 srelgot
1342 = bfd_get_section_by_name (dynobj, ".rela.got");
1343 BFD_ASSERT (srelgot != NULL);
1344
1345 outrel.r_offset = (sgot->output_section->vma
1346 + sgot->output_offset
1347 + off);
1348 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1349 outrel.r_addend = relocation;
1350 loc = srelgot->contents;
1351 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1352 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1353 }
1354
1355 local_got_offsets[r_symndx] |= 1;
1356 }
1357 }
1358
1359 relocation = sgot->output_offset + off;
1360 if (rel->r_addend != 0)
1361 {
1362 /* We can't do anything for a relocation which is against
1363 a symbol *plus offset*. GOT holds relocations for
1364 symbols. Make this an error; the compiler isn't
1365 allowed to pass us these kinds of things. */
1366 if (h == NULL)
1367 (*_bfd_error_handler)
1368 (_("%B, section %A: relocation %s with non-zero addend %d"
1369 " against local symbol"),
1370 input_bfd,
1371 input_section,
1372 cris_elf_howto_table[r_type].name,
1373 rel->r_addend);
1374 else
1375 (*_bfd_error_handler)
1376 (_("%B, section %A: relocation %s with non-zero addend %d"
1377 " against symbol `%s'"),
1378 input_bfd,
1379 input_section,
1380 cris_elf_howto_table[r_type].name,
1381 rel->r_addend,
1382 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1383
1384 bfd_set_error (bfd_error_bad_value);
1385 return FALSE;
1386 }
1387 }
1388 break;
1389
1390 case R_CRIS_32_GOTREL:
1391 /* This relocation must only be performed against local symbols.
1392 It's also ok when we link a program and the symbol is either
1393 defined in an ordinary (non-DSO) object or is undefined weak. */
1394 if (h != NULL
1395 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1396 && !(!info->shared
1397 && (h->def_regular
1398 || (!h->def_dynamic
1399 && h->root.type == bfd_link_hash_undefweak))))
1400 {
1401 (*_bfd_error_handler)
1402 (_("%B, section %A: relocation %s is"
1403 " not allowed for global symbol: `%s'"),
1404 input_bfd,
1405 input_section,
1406 cris_elf_howto_table[r_type].name,
1407 symname);
1408 bfd_set_error (bfd_error_bad_value);
1409 return FALSE;
1410 }
1411
1412 /* This can happen if we get a link error with the input ELF
1413 variant mismatching the output variant. Emit an error so
1414 it's noticed if it happens elsewhere. */
1415 if (sgot == NULL)
1416 {
1417 (*_bfd_error_handler)
1418 (_("%B, section %A: relocation %s with no GOT created"),
1419 input_bfd,
1420 input_section,
1421 cris_elf_howto_table[r_type].name);
1422 bfd_set_error (bfd_error_bad_value);
1423 return FALSE;
1424 }
1425
1426 /* This relocation is like a PC-relative one, except the
1427 reference point is the location of GOT. Note that
1428 sgot->output_offset is not involved in this calculation. We
1429 always want the start of entire .got section, not the
1430 position after the reserved header. */
1431 relocation -= sgot->output_section->vma;
1432 break;
1433
1434 case R_CRIS_32_PLT_PCREL:
1435 /* Relocation is to the entry for this symbol in the
1436 procedure linkage table. */
1437
1438 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1439 without using the procedure linkage table. */
1440 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1441 break;
1442
1443 if (h->plt.offset == (bfd_vma) -1
1444 || splt == NULL)
1445 {
1446 /* We didn't make a PLT entry for this symbol. This
1447 happens when statically linking PIC code, or when
1448 using -Bsymbolic. */
1449 break;
1450 }
1451
1452 relocation = (splt->output_section->vma
1453 + splt->output_offset
1454 + h->plt.offset);
1455 break;
1456
1457 case R_CRIS_32_PLT_GOTREL:
1458 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1459 start of the .got section. See also comment at
1460 R_CRIS_32_GOT. */
1461 relocation -= sgot->output_section->vma;
1462
1463 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1464 without using the procedure linkage table. */
1465 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1466 break;
1467
1468 if (h->plt.offset == (bfd_vma) -1
1469 || splt == NULL)
1470 {
1471 /* We didn't make a PLT entry for this symbol. This
1472 happens when statically linking PIC code, or when
1473 using -Bsymbolic. */
1474 break;
1475 }
1476
1477 relocation = (splt->output_section->vma
1478 + splt->output_offset
1479 + h->plt.offset
1480 - sgot->output_section->vma);
1481 break;
1482
1483 case R_CRIS_8_PCREL:
1484 case R_CRIS_16_PCREL:
1485 case R_CRIS_32_PCREL:
1486 /* If the symbol was local, we need no shlib-specific handling. */
1487 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1488 || h->dynindx == -1)
1489 break;
1490
1491 /* Fall through. */
1492 case R_CRIS_8:
1493 case R_CRIS_16:
1494 case R_CRIS_32:
1495 if (info->shared
1496 && r_symndx != 0
1497 && (input_section->flags & SEC_ALLOC) != 0
1498 && ((r_type != R_CRIS_8_PCREL
1499 && r_type != R_CRIS_16_PCREL
1500 && r_type != R_CRIS_32_PCREL)
1501 || (!info->symbolic
1502 || (h != NULL && !h->def_regular))))
1503 {
1504 Elf_Internal_Rela outrel;
1505 bfd_byte *loc;
1506 bfd_boolean skip, relocate;
1507
1508 /* When generating a shared object, these relocations
1509 are copied into the output file to be resolved at run
1510 time. */
1511
1512 if (sreloc == NULL)
1513 {
1514 sreloc = _bfd_elf_get_dynamic_reloc_section
1515 (dynobj, input_section, /*rela?*/ TRUE);
1516 /* The section should have been created in cris_elf_check_relocs,
1517 but that function will not be called for objects which fail in
1518 cris_elf_merge_private_bfd_data. */
1519 if (sreloc == NULL)
1520 {
1521 bfd_set_error (bfd_error_bad_value);
1522 return FALSE;
1523 }
1524 }
1525
1526 skip = FALSE;
1527 relocate = FALSE;
1528
1529 outrel.r_offset =
1530 _bfd_elf_section_offset (output_bfd, info, input_section,
1531 rel->r_offset);
1532 if (outrel.r_offset == (bfd_vma) -1)
1533 skip = TRUE;
1534 else if (outrel.r_offset == (bfd_vma) -2
1535 /* For now, undefined weak symbols with non-default
1536 visibility (yielding 0), like exception info for
1537 discarded sections, will get a R_CRIS_NONE
1538 relocation rather than no relocation, because we
1539 notice too late that the symbol doesn't need a
1540 relocation. */
1541 || (h != NULL
1542 && h->root.type == bfd_link_hash_undefweak
1543 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1544 skip = TRUE, relocate = TRUE;
1545 outrel.r_offset += (input_section->output_section->vma
1546 + input_section->output_offset);
1547
1548 if (skip)
1549 memset (&outrel, 0, sizeof outrel);
1550 /* h->dynindx may be -1 if the symbol was marked to
1551 become local. */
1552 else if (h != NULL
1553 && ((! info->symbolic && h->dynindx != -1)
1554 || !h->def_regular))
1555 {
1556 BFD_ASSERT (h->dynindx != -1);
1557 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1558 outrel.r_addend = relocation + rel->r_addend;
1559 }
1560 else
1561 {
1562 outrel.r_addend = relocation + rel->r_addend;
1563
1564 if (r_type == R_CRIS_32)
1565 {
1566 relocate = TRUE;
1567 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1568 }
1569 else
1570 {
1571 long indx;
1572
1573 if (bfd_is_abs_section (sec))
1574 indx = 0;
1575 else if (sec == NULL || sec->owner == NULL)
1576 {
1577 bfd_set_error (bfd_error_bad_value);
1578 return FALSE;
1579 }
1580 else
1581 {
1582 asection *osec;
1583
1584 /* We are turning this relocation into one
1585 against a section symbol. It would be
1586 proper to subtract the symbol's value,
1587 osec->vma, from the emitted reloc addend,
1588 but ld.so expects buggy relocs. */
1589 osec = sec->output_section;
1590 indx = elf_section_data (osec)->dynindx;
1591 if (indx == 0)
1592 {
1593 osec = htab->root.text_index_section;
1594 indx = elf_section_data (osec)->dynindx;
1595 }
1596 BFD_ASSERT (indx != 0);
1597 }
1598
1599 outrel.r_info = ELF32_R_INFO (indx, r_type);
1600 }
1601 }
1602
1603 loc = sreloc->contents;
1604 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1605 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1606
1607 /* This reloc will be computed at runtime, so there's no
1608 need to do anything now, except for R_CRIS_32 relocations
1609 that have been turned into R_CRIS_RELATIVE. */
1610 if (!relocate)
1611 continue;
1612 }
1613
1614 break;
1615
1616 case R_CRIS_16_DTPREL:
1617 case R_CRIS_32_DTPREL:
1618 /* This relocation must only be performed against local
1619 symbols, or to sections that are not loadable. It's also
1620 ok when we link a program and the symbol is defined in an
1621 ordinary (non-DSO) object (if it's undefined there, we've
1622 already seen an error). */
1623 if (h != NULL
1624 && (input_section->flags & SEC_ALLOC) != 0
1625 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1626 && (info->shared
1627 || (!h->def_regular
1628 && h->root.type != bfd_link_hash_undefined)))
1629 {
1630 (*_bfd_error_handler)
1631 ((h->root.type == bfd_link_hash_undefined)
1632 /* We shouldn't get here for GCC-emitted code. */
1633 ? _("%B, section %A: relocation %s has an undefined"
1634 " reference to `%s', perhaps a declaration mixup?")
1635 : ("%B, section %A: relocation %s is"
1636 " not allowed for `%s', a global symbol with default"
1637 " visibility, perhaps a declaration mixup?"),
1638 input_bfd,
1639 input_section,
1640 cris_elf_howto_table[r_type].name,
1641 symname != NULL && symname[0] != '\0'
1642 ? symname : _("[whose name is lost]"));
1643 bfd_set_error (bfd_error_bad_value);
1644 return FALSE;
1645 }
1646
1647 BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1648 || htab->dtpmod_refcount != 0);
1649
1650 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1651 already done so. Note that we do this in .got.plt, not
1652 in .got, as .got.plt contains the first part, still the
1653 reloc is against .got, because the linker script directs
1654 (is required to direct) them both into .got. */
1655 if (htab->dtpmod_refcount > 0
1656 && (input_section->flags & SEC_ALLOC) != 0)
1657 {
1658 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1659 BFD_ASSERT (sgotplt != NULL);
1660
1661 if (info->shared)
1662 {
1663 Elf_Internal_Rela outrel;
1664 bfd_byte *loc;
1665
1666 if (srelgot == NULL)
1667 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1668 BFD_ASSERT (srelgot != NULL);
1669 loc = srelgot->contents;
1670 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1671
1672 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1673 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1674 outrel.r_offset = (sgotplt->output_section->vma
1675 + sgotplt->output_offset
1676 + 12);
1677 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1678 outrel.r_addend = 0;
1679 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1680 }
1681 else
1682 {
1683 /* For an executable, the GOT entry contents is known. */
1684 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1685 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1686 }
1687
1688 /* Reverse the sign to mark that we've emitted the
1689 required GOT entry. */
1690 htab->dtpmod_refcount = - htab->dtpmod_refcount;
1691 }
1692
1693 /* The relocation is the offset from the start of the module
1694 TLS block to the (local) symbol. */
1695 relocation -= elf_hash_table (info)->tls_sec == NULL
1696 ? 0 : elf_hash_table (info)->tls_sec->vma;
1697 break;
1698
1699 case R_CRIS_32_GD:
1700 if (info->shared)
1701 {
1702 bfd_set_error (bfd_error_invalid_operation);
1703
1704 /* We've already informed in cris_elf_check_relocs that
1705 this is an error. */
1706 return FALSE;
1707 }
1708 /* Fall through. */
1709
1710 case R_CRIS_16_GOT_GD:
1711 case R_CRIS_32_GOT_GD:
1712 if (rel->r_addend != 0)
1713 {
1714 /* We can't do anything for a relocation which is against a
1715 symbol *plus offset*. The GOT holds relocations for
1716 symbols. Make this an error; the compiler isn't allowed
1717 to pass us these kinds of things. */
1718 (*_bfd_error_handler)
1719 (_("%B, section %A: relocation %s with non-zero addend %d"
1720 " against symbol `%s'"),
1721 input_bfd,
1722 input_section,
1723 cris_elf_howto_table[r_type].name,
1724 rel->r_addend,
1725 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1726
1727 bfd_set_error (bfd_error_bad_value);
1728 return FALSE;
1729 }
1730
1731 if (!info->shared
1732 && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1733 {
1734 /* Known contents of the GOT. */
1735 bfd_vma off;
1736
1737 /* The symbol is defined in the program, so just write
1738 (1, known_tpoffset) into the GOT. */
1739 relocation -= elf_hash_table (info)->tls_sec->vma;
1740
1741 if (h != NULL)
1742 {
1743 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1744 ? h->got.offset + 4 : h->got.offset;
1745 }
1746 else
1747 {
1748 off = local_got_offsets[r_symndx];
1749 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1750 off += 4;
1751 }
1752
1753 /* We use bit 1 of the offset as a flag for GOT entry with
1754 the R_CRIS_DTP reloc, setting it when we've emitted the
1755 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1756 relocs. */
1757 if ((off & 2) == 0)
1758 {
1759 off &= ~3;
1760
1761 if (h != NULL)
1762 h->got.offset |= 2;
1763 else
1764 local_got_offsets[r_symndx] |= 2;
1765
1766 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1767 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1768 }
1769 else
1770 off &= ~3;
1771
1772 relocation = sgot->output_offset + off
1773 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1774 }
1775 else
1776 {
1777 /* Not all parts of the GOT entry are known; emit a real
1778 relocation. */
1779 bfd_vma off;
1780
1781 if (h != NULL)
1782 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1783 ? h->got.offset + 4 : h->got.offset;
1784 else
1785 {
1786 off = local_got_offsets[r_symndx];
1787 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1788 off += 4;
1789 }
1790
1791 /* See above re bit 1 and bit 0 usage. */
1792 if ((off & 2) == 0)
1793 {
1794 Elf_Internal_Rela outrel;
1795 bfd_byte *loc;
1796
1797 off &= ~3;
1798
1799 if (h != NULL)
1800 h->got.offset |= 2;
1801 else
1802 local_got_offsets[r_symndx] |= 2;
1803
1804 /* Clear the target contents of the GOT (just as a
1805 gesture; it's already cleared on allocation): this
1806 relocation is not like the other dynrelocs. */
1807 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1808 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1809
1810 if (srelgot == NULL)
1811 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1812 BFD_ASSERT (srelgot != NULL);
1813
1814 if (h != NULL && h->dynindx != -1)
1815 {
1816 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1817 relocation = 0;
1818 }
1819 else
1820 {
1821 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1822
1823 /* NULL if we had an error. */
1824 relocation -= elf_hash_table (info)->tls_sec == NULL
1825 ? 0 : elf_hash_table (info)->tls_sec->vma;
1826 }
1827
1828 outrel.r_offset = (sgot->output_section->vma
1829 + sgot->output_offset
1830 + off);
1831 outrel.r_addend = relocation;
1832 loc = srelgot->contents;
1833 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1834
1835 /* NULL if we had an error. */
1836 if (srelgot->contents != NULL)
1837 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1838 }
1839 else
1840 off &= ~3;
1841
1842 relocation = sgot->output_offset + off
1843 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1844 }
1845
1846 /* The GOT-relative offset to the GOT entry is the
1847 relocation, or for R_CRIS_32_GD, the actual address of
1848 the GOT entry. */
1849 break;
1850
1851 case R_CRIS_32_IE:
1852 if (info->shared)
1853 {
1854 bfd_set_error (bfd_error_invalid_operation);
1855
1856 /* We've already informed in cris_elf_check_relocs that
1857 this is an error. */
1858 return FALSE;
1859 }
1860 /* Fall through. */
1861
1862 case R_CRIS_32_GOT_TPREL:
1863 case R_CRIS_16_GOT_TPREL:
1864 if (rel->r_addend != 0)
1865 {
1866 /* We can't do anything for a relocation which is
1867 against a symbol *plus offset*. GOT holds
1868 relocations for symbols. Make this an error; the
1869 compiler isn't allowed to pass us these kinds of
1870 things. */
1871 (*_bfd_error_handler)
1872 (_("%B, section %A: relocation %s with non-zero addend %d"
1873 " against symbol `%s'"),
1874 input_bfd,
1875 input_section,
1876 cris_elf_howto_table[r_type].name,
1877 rel->r_addend,
1878 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1879 bfd_set_error (bfd_error_bad_value);
1880 return FALSE;
1881 }
1882
1883 if (!info->shared && (h == NULL || h->def_regular))
1884 {
1885 /* Known contents of the GOT. */
1886 bfd_vma off;
1887
1888 /* The symbol is defined in the program, so just write
1889 the -prog_tls_size+known_tpoffset into the GOT. */
1890 relocation -= elf_hash_table (info)->tls_sec->vma;
1891 relocation -= elf_hash_table (info)->tls_size;
1892
1893 if (h != NULL)
1894 off = h->got.offset;
1895 else
1896 off = local_got_offsets[r_symndx];
1897
1898 /* Bit 0 is used to mark whether we've emitted the required
1899 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1900 is used similarly for R_CRIS_DTP, see above. */
1901 if ((off & 1) == 0)
1902 {
1903 off &= ~3;
1904
1905 if (h != NULL)
1906 h->got.offset |= 1;
1907 else
1908 local_got_offsets[r_symndx] |= 1;
1909
1910 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1911 }
1912 else
1913 off &= ~3;
1914
1915 relocation = sgot->output_offset + off
1916 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1917 }
1918 else
1919 {
1920 /* Emit a real relocation. */
1921 bfd_vma off;
1922
1923 if (h != NULL)
1924 off = h->got.offset;
1925 else
1926 off = local_got_offsets[r_symndx];
1927
1928 /* See above re usage of bit 0 and 1. */
1929 if ((off & 1) == 0)
1930 {
1931 Elf_Internal_Rela outrel;
1932 bfd_byte *loc;
1933
1934 off &= ~3;
1935
1936 if (h != NULL)
1937 h->got.offset |= 1;
1938 else
1939 local_got_offsets[r_symndx] |= 1;
1940
1941 if (srelgot == NULL)
1942 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1943 BFD_ASSERT (srelgot != NULL);
1944
1945 if (h != NULL && h->dynindx != -1)
1946 {
1947 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1948 relocation = 0;
1949 }
1950 else
1951 {
1952 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1953
1954 /* NULL if we had an error. */
1955 relocation -= elf_hash_table (info)->tls_sec == NULL
1956 ? 0 : elf_hash_table (info)->tls_sec->vma;
1957 }
1958
1959 /* Just "define" the initial contents in some
1960 semi-logical way. */
1961 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1962
1963 outrel.r_offset = (sgot->output_section->vma
1964 + sgot->output_offset
1965 + off);
1966 outrel.r_addend = relocation;
1967 loc = srelgot->contents;
1968 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1969 /* NULL if we had an error. */
1970 if (srelgot->contents != NULL)
1971 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1972 }
1973 else
1974 off &= ~3;
1975
1976 relocation = sgot->output_offset + off
1977 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1978 }
1979
1980 /* The GOT-relative offset to the GOT entry is the relocation,
1981 or for R_CRIS_32_GD, the actual address of the GOT entry. */
1982 break;
1983
1984 case R_CRIS_16_TPREL:
1985 case R_CRIS_32_TPREL:
1986 /* This relocation must only be performed against symbols
1987 defined in an ordinary (non-DSO) object. */
1988 if (info->shared)
1989 {
1990 bfd_set_error (bfd_error_invalid_operation);
1991
1992 /* We've already informed in cris_elf_check_relocs that
1993 this is an error. */
1994 return FALSE;
1995 }
1996
1997 if (h != NULL
1998 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1999 && !(h->def_regular || ELF_COMMON_DEF_P (h))
2000 /* If it's undefined, then an error message has already
2001 been emitted. */
2002 && h->root.type != bfd_link_hash_undefined)
2003 {
2004 (*_bfd_error_handler)
2005 (_("%B, section %A: relocation %s is"
2006 " not allowed for symbol: `%s'"
2007 " which is defined outside the program,"
2008 " perhaps a declaration mixup?"),
2009 input_bfd,
2010 input_section,
2011 cris_elf_howto_table[r_type].name,
2012 symname);
2013 bfd_set_error (bfd_error_bad_value);
2014 return FALSE;
2015 }
2016
2017 /* NULL if we had an error. */
2018 relocation -= elf_hash_table (info)->tls_sec == NULL
2019 ? 0
2020 : (elf_hash_table (info)->tls_sec->vma
2021 + elf_hash_table (info)->tls_size);
2022
2023 /* The TLS-relative offset is the relocation. */
2024 break;
2025
2026 default:
2027 BFD_FAIL ();
2028 return FALSE;
2029 }
2030
2031 r = cris_final_link_relocate (howto, input_bfd, input_section,
2032 contents, rel, relocation);
2033
2034 if (r != bfd_reloc_ok)
2035 {
2036 const char * msg = (const char *) NULL;
2037
2038 switch (r)
2039 {
2040 case bfd_reloc_overflow:
2041 r = info->callbacks->reloc_overflow
2042 (info, (h ? &h->root : NULL), symname, howto->name,
2043 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2044 if (additional_relocation_error_msg_count > 0)
2045 {
2046 additional_relocation_error_msg_count--;
2047 switch (r_type)
2048 {
2049 case R_CRIS_16_GOTPLT:
2050 case R_CRIS_16_GOT:
2051
2052 /* Not just TLS is involved here, so we make
2053 generation and message depend on -fPIC/-fpic
2054 only. */
2055 case R_CRIS_16_GOT_TPREL:
2056 case R_CRIS_16_GOT_GD:
2057 (*_bfd_error_handler)
2058 (_("(too many global variables for -fpic:"
2059 " recompile with -fPIC)"));
2060 break;
2061
2062 case R_CRIS_16_TPREL:
2063 case R_CRIS_16_DTPREL:
2064 (*_bfd_error_handler)
2065 (_("(thread-local data too big for -fpic or"
2066 " -msmall-tls: recompile with -fPIC or"
2067 " -mno-small-tls)"));
2068 break;
2069
2070 /* No known cause for overflow for other relocs. */
2071 default:
2072 break;
2073 }
2074 }
2075 break;
2076
2077 case bfd_reloc_undefined:
2078 r = info->callbacks->undefined_symbol
2079 (info, symname, input_bfd, input_section, rel->r_offset,
2080 TRUE);
2081 break;
2082
2083 case bfd_reloc_outofrange:
2084 msg = _("internal error: out of range error");
2085 break;
2086
2087 case bfd_reloc_notsupported:
2088 msg = _("internal error: unsupported relocation error");
2089 break;
2090
2091 case bfd_reloc_dangerous:
2092 msg = _("internal error: dangerous relocation");
2093 break;
2094
2095 default:
2096 msg = _("internal error: unknown error");
2097 break;
2098 }
2099
2100 if (msg)
2101 r = info->callbacks->warning
2102 (info, msg, symname, input_bfd, input_section, rel->r_offset);
2103
2104 if (! r)
2105 return FALSE;
2106 }
2107 }
2108
2109 return TRUE;
2110 }
2111 \f
2112 /* Finish up dynamic symbol handling. We set the contents of various
2113 dynamic sections here. */
2114
2115 static bfd_boolean
2116 elf_cris_finish_dynamic_symbol (bfd *output_bfd,
2117 struct bfd_link_info *info,
2118 struct elf_link_hash_entry *h,
2119 Elf_Internal_Sym *sym)
2120 {
2121 struct elf_cris_link_hash_table * htab;
2122 bfd *dynobj;
2123
2124 /* Where in the plt entry to put values. */
2125 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2126
2127 /* What offset to add to the distance to the first PLT entry for the
2128 value at plt_off3. */
2129 int plt_off3_value_bias = 4;
2130
2131 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2132 for PIC and non-PIC for v32 and pre-v32). */
2133 int plt_stub_offset = 8;
2134 int plt_entry_size = PLT_ENTRY_SIZE;
2135 const bfd_byte *plt_entry = elf_cris_plt_entry;
2136 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2137
2138 htab = elf_cris_hash_table (info);
2139 if (htab == NULL)
2140 return FALSE;
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 *srela;
2161 bfd_vma got_base;
2162
2163 bfd_vma gotplt_offset
2164 = elf_cris_hash_entry (h)->gotplt_offset;
2165 Elf_Internal_Rela rela;
2166 bfd_byte *loc;
2167 bfd_boolean has_gotplt = gotplt_offset != 0;
2168
2169 /* Get the index in the .rela.plt relocations for the .got.plt
2170 entry that corresponds to this symbol.
2171 We have to count backwards here, and the result is only valid
2172 as an index into .rela.plt. We also have to undo the effect
2173 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2174 .got.plt) for which gotplt_offset is adjusted, because while
2175 that entry goes into .got.plt, its relocation goes into
2176 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2177 processed as part of the runtime lazy .rela.plt relocation).
2178 FIXME: There be literal constants here... */
2179 bfd_vma rela_plt_index
2180 = (htab->dtpmod_refcount != 0
2181 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2182
2183 /* Get the offset into the .got table of the entry that corresponds
2184 to this function. Note that we embed knowledge that "incoming"
2185 .got goes after .got.plt in the output without padding (pointer
2186 aligned). However, that knowledge is present in several other
2187 places too. */
2188 bfd_vma got_offset
2189 = (has_gotplt
2190 ? gotplt_offset
2191 : h->got.offset + htab->next_gotplt_entry);
2192
2193 /* This symbol has an entry in the procedure linkage table. Set it
2194 up. */
2195
2196 BFD_ASSERT (h->dynindx != -1);
2197
2198 splt = bfd_get_section_by_name (dynobj, ".plt");
2199 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2200 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2201 BFD_ASSERT (splt != NULL && sgotplt != NULL
2202 && (! has_gotplt || srela != NULL));
2203
2204 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2205
2206 /* Fill in the entry in the procedure linkage table. */
2207 if (! info->shared)
2208 {
2209 memcpy (splt->contents + h->plt.offset, plt_entry,
2210 plt_entry_size);
2211
2212 /* We need to enter the absolute address of the GOT entry here. */
2213 bfd_put_32 (output_bfd, got_base + got_offset,
2214 splt->contents + h->plt.offset + plt_off1);
2215 }
2216 else
2217 {
2218 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2219 plt_entry_size);
2220 bfd_put_32 (output_bfd, got_offset,
2221 splt->contents + h->plt.offset + plt_off1);
2222 }
2223
2224 /* Fill in the plt entry and make a relocation, if this is a "real"
2225 PLT entry. */
2226 if (has_gotplt)
2227 {
2228 /* Fill in the offset to the reloc table. */
2229 bfd_put_32 (output_bfd,
2230 rela_plt_index * sizeof (Elf32_External_Rela),
2231 splt->contents + h->plt.offset + plt_off2);
2232
2233 /* Fill in the offset to the first PLT entry, where to "jump". */
2234 bfd_put_32 (output_bfd,
2235 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2236 splt->contents + h->plt.offset + plt_off3);
2237
2238 /* Fill in the entry in the global offset table with the address of
2239 the relocating stub. */
2240 bfd_put_32 (output_bfd,
2241 (splt->output_section->vma
2242 + splt->output_offset
2243 + h->plt.offset
2244 + plt_stub_offset),
2245 sgotplt->contents + got_offset);
2246
2247 /* Fill in the entry in the .rela.plt section. */
2248 rela.r_offset = (sgotplt->output_section->vma
2249 + sgotplt->output_offset
2250 + got_offset);
2251 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2252 rela.r_addend = 0;
2253 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2254 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2255 }
2256
2257 if (!h->def_regular)
2258 {
2259 /* Mark the symbol as undefined, rather than as defined in
2260 the .plt section. Leave the value alone. */
2261 sym->st_shndx = SHN_UNDEF;
2262
2263 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2264 know whether resetting the value is significant; if it really
2265 is, rather than a quirk or bug in the sparc port, then I
2266 believe we'd see this elsewhere. */
2267 /* If the symbol is weak, we do need to clear the value.
2268 Otherwise, the PLT entry would provide a definition for
2269 the symbol even if the symbol wasn't defined anywhere,
2270 and so the symbol would never be NULL. */
2271 if (!h->ref_regular_nonweak)
2272 sym->st_value = 0;
2273 }
2274 }
2275
2276 /* For an ordinary program, we emit .got relocs only for symbols that
2277 are in the dynamic-symbols table and are either defined by the
2278 program or are undefined weak symbols, or are function symbols
2279 where we do not output a PLT: the PLT reloc was output above and all
2280 references to the function symbol are redirected to the PLT. */
2281 if (h->got.offset != (bfd_vma) -1
2282 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2283 && (info->shared
2284 || (h->dynindx != -1
2285 && h->plt.offset == (bfd_vma) -1
2286 && !h->def_regular
2287 && h->root.type != bfd_link_hash_undefweak)))
2288 {
2289 asection *sgot;
2290 asection *srela;
2291 Elf_Internal_Rela rela;
2292 bfd_byte *loc;
2293 bfd_byte *where;
2294
2295 /* This symbol has an entry in the global offset table. Set it up. */
2296
2297 sgot = bfd_get_section_by_name (dynobj, ".got");
2298 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2299 BFD_ASSERT (sgot != NULL && srela != NULL);
2300
2301 rela.r_offset = (sgot->output_section->vma
2302 + sgot->output_offset
2303 + (h->got.offset &~ (bfd_vma) 1));
2304
2305 /* If this is a static link, or it is a -Bsymbolic link and the
2306 symbol is defined locally or was forced to be local because
2307 of a version file, we just want to emit a RELATIVE reloc.
2308 The entry in the global offset table will already have been
2309 initialized in the relocate_section function. */
2310 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2311 if (! elf_hash_table (info)->dynamic_sections_created
2312 || (info->shared
2313 && (info->symbolic || h->dynindx == -1)
2314 && h->def_regular))
2315 {
2316 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2317 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2318 }
2319 else
2320 {
2321 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2322 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2323 rela.r_addend = 0;
2324 }
2325
2326 loc = srela->contents;
2327 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2328 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2329 }
2330
2331 if (h->needs_copy)
2332 {
2333 asection *s;
2334 Elf_Internal_Rela rela;
2335 bfd_byte *loc;
2336
2337 /* This symbol needs a copy reloc. Set it up. */
2338
2339 BFD_ASSERT (h->dynindx != -1
2340 && (h->root.type == bfd_link_hash_defined
2341 || h->root.type == bfd_link_hash_defweak));
2342
2343 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2344 ".rela.bss");
2345 BFD_ASSERT (s != NULL);
2346
2347 rela.r_offset = (h->root.u.def.value
2348 + h->root.u.def.section->output_section->vma
2349 + h->root.u.def.section->output_offset);
2350 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2351 rela.r_addend = 0;
2352 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2353 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2354 }
2355
2356 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2357 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2358 || h == elf_hash_table (info)->hgot)
2359 sym->st_shndx = SHN_ABS;
2360
2361 return TRUE;
2362 }
2363 \f
2364 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2365 offsets were changed, as part of -z combreloc handling, from those we
2366 computed. */
2367
2368 static bfd_boolean
2369 elf_cris_finish_dynamic_sections (output_bfd, info)
2370 bfd *output_bfd;
2371 struct bfd_link_info *info;
2372 {
2373 bfd *dynobj;
2374 asection *sgot;
2375 asection *sdyn;
2376
2377 dynobj = elf_hash_table (info)->dynobj;
2378
2379 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2380 BFD_ASSERT (sgot != NULL);
2381 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2382
2383 if (elf_hash_table (info)->dynamic_sections_created)
2384 {
2385 asection *splt;
2386 Elf32_External_Dyn *dyncon, *dynconend;
2387
2388 splt = bfd_get_section_by_name (dynobj, ".plt");
2389 BFD_ASSERT (splt != NULL && sdyn != NULL);
2390
2391 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2392 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2393 for (; dyncon < dynconend; dyncon++)
2394 {
2395 Elf_Internal_Dyn dyn;
2396 asection *s;
2397
2398 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2399
2400 switch (dyn.d_tag)
2401 {
2402 default:
2403 break;
2404
2405 case DT_PLTGOT:
2406 s = bfd_get_section_by_name (output_bfd, ".got");
2407 BFD_ASSERT (s != NULL);
2408 dyn.d_un.d_ptr = s->vma;
2409 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2410 break;
2411
2412 case DT_JMPREL:
2413 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2414 if all symbols are found in the .got (not .got.plt). */
2415 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2416 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2417 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2418 break;
2419
2420 case DT_PLTRELSZ:
2421 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2422 if (s == NULL)
2423 dyn.d_un.d_val = 0;
2424 else
2425 dyn.d_un.d_val = s->size;
2426 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2427 break;
2428
2429 case DT_RELASZ:
2430 /* The procedure linkage table relocs (DT_JMPREL) should
2431 not be included in the overall relocs (DT_RELA).
2432 Therefore, we override the DT_RELASZ entry here to
2433 make it not include the JMPREL relocs. Since the
2434 linker script arranges for .rela.plt to follow all
2435 other relocation sections, we don't have to worry
2436 about changing the DT_RELA entry. */
2437 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2438 if (s != NULL)
2439 dyn.d_un.d_val -= s->size;
2440 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2441 break;
2442 }
2443 }
2444
2445 /* Fill in the first entry in the procedure linkage table. */
2446 if (splt->size > 0)
2447 {
2448 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2449 {
2450 if (info->shared)
2451 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2452 PLT_ENTRY_SIZE_V32);
2453 else
2454 {
2455 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2456 PLT_ENTRY_SIZE_V32);
2457 bfd_put_32 (output_bfd,
2458 sgot->output_section->vma
2459 + sgot->output_offset + 4,
2460 splt->contents + 4);
2461
2462 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2463 = PLT_ENTRY_SIZE_V32;
2464 }
2465 }
2466 else
2467 {
2468 if (info->shared)
2469 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2470 PLT_ENTRY_SIZE);
2471 else
2472 {
2473 memcpy (splt->contents, elf_cris_plt0_entry,
2474 PLT_ENTRY_SIZE);
2475 bfd_put_32 (output_bfd,
2476 sgot->output_section->vma
2477 + sgot->output_offset + 4,
2478 splt->contents + 6);
2479 bfd_put_32 (output_bfd,
2480 sgot->output_section->vma
2481 + sgot->output_offset + 8,
2482 splt->contents + 14);
2483
2484 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2485 = PLT_ENTRY_SIZE;
2486 }
2487 }
2488 }
2489 }
2490
2491 /* Fill in the first three entries in the global offset table. */
2492 if (sgot->size > 0)
2493 {
2494 if (sdyn == NULL)
2495 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2496 else
2497 bfd_put_32 (output_bfd,
2498 sdyn->output_section->vma + sdyn->output_offset,
2499 sgot->contents);
2500 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2501 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2502 }
2503
2504 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2505
2506 return TRUE;
2507 }
2508 \f
2509 /* Return the section that should be marked against GC for a given
2510 relocation. */
2511
2512 static asection *
2513 cris_elf_gc_mark_hook (asection *sec,
2514 struct bfd_link_info *info,
2515 Elf_Internal_Rela *rel,
2516 struct elf_link_hash_entry *h,
2517 Elf_Internal_Sym *sym)
2518 {
2519 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2520 if (h != NULL)
2521 switch (r_type)
2522 {
2523 case R_CRIS_GNU_VTINHERIT:
2524 case R_CRIS_GNU_VTENTRY:
2525 return NULL;
2526
2527 default:
2528 break;
2529 }
2530
2531 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2532 }
2533
2534 /* Update the got entry reference counts for the section being removed. */
2535
2536 static bfd_boolean
2537 cris_elf_gc_sweep_hook (bfd *abfd,
2538 struct bfd_link_info *info,
2539 asection *sec,
2540 const Elf_Internal_Rela *relocs)
2541 {
2542 struct elf_cris_link_hash_table * htab;
2543 Elf_Internal_Shdr *symtab_hdr;
2544 struct elf_link_hash_entry **sym_hashes;
2545 bfd_signed_vma *local_got_refcounts;
2546 const Elf_Internal_Rela *rel, *relend;
2547 bfd *dynobj;
2548 asection *sgot;
2549 asection *srelgot;
2550
2551 if (info->relocatable)
2552 return TRUE;
2553
2554 dynobj = elf_hash_table (info)->dynobj;
2555 if (dynobj == NULL)
2556 return TRUE;
2557
2558 htab = elf_cris_hash_table (info);
2559 if (htab == NULL)
2560 return FALSE;
2561
2562 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2563 sym_hashes = elf_sym_hashes (abfd);
2564 local_got_refcounts = elf_local_got_refcounts (abfd);
2565
2566 sgot = bfd_get_section_by_name (dynobj, ".got");
2567 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2568
2569 relend = relocs + sec->reloc_count;
2570 for (rel = relocs; rel < relend; rel++)
2571 {
2572 unsigned long r_symndx;
2573 struct elf_link_hash_entry *h = NULL;
2574 bfd_signed_vma got_element_size = 4;
2575 bfd_signed_vma *specific_refcount = NULL;
2576 enum elf_cris_reloc_type r_type;
2577
2578 r_symndx = ELF32_R_SYM (rel->r_info);
2579 if (r_symndx >= symtab_hdr->sh_info)
2580 {
2581 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2582 while (h->root.type == bfd_link_hash_indirect
2583 || h->root.type == bfd_link_hash_warning)
2584 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2585 }
2586
2587 r_type = ELF32_R_TYPE (rel->r_info);
2588 switch (r_type)
2589 {
2590 case R_CRIS_32_GOT:
2591 case R_CRIS_16_GOT:
2592 case R_CRIS_16_GOTPLT:
2593 case R_CRIS_32_GOTPLT:
2594 specific_refcount = h != NULL
2595 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2596 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2597 break;
2598
2599 case R_CRIS_32_GD:
2600 case R_CRIS_32_GOT_GD:
2601 case R_CRIS_16_GOT_GD:
2602 got_element_size = 8;
2603 specific_refcount = h != NULL
2604 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2605 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2606 break;
2607
2608 case R_CRIS_32_IE:
2609 case R_CRIS_16_GOT_TPREL:
2610 case R_CRIS_32_GOT_TPREL:
2611 specific_refcount = h != NULL
2612 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2613 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2614 break;
2615
2616 default:
2617 break;
2618 }
2619
2620 switch (r_type)
2621 {
2622 case R_CRIS_32_IE:
2623 case R_CRIS_32_GD:
2624 case R_CRIS_16_GOT_TPREL:
2625 case R_CRIS_32_GOT_TPREL:
2626 case R_CRIS_32_GOT_GD:
2627 case R_CRIS_16_GOT_GD:
2628 case R_CRIS_16_GOT:
2629 case R_CRIS_32_GOT:
2630 if (h != NULL)
2631 {
2632 /* If the counters are 0 when we got here, we've
2633 miscounted somehow somewhere, an internal error. */
2634 BFD_ASSERT (h->got.refcount > 0);
2635 --h->got.refcount;
2636
2637 BFD_ASSERT (*specific_refcount > 0);
2638 --*specific_refcount;
2639 if (*specific_refcount == 0)
2640 {
2641 /* We don't need the .got entry any more. */
2642 sgot->size -= got_element_size;
2643 srelgot->size -= sizeof (Elf32_External_Rela);
2644 }
2645 break;
2646 }
2647
2648 local_got_reloc:
2649 if (local_got_refcounts != NULL)
2650 {
2651 /* If the counters are 0 when we got here, we've
2652 miscounted somehow somewhere, an internal error. */
2653 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2654 --local_got_refcounts[r_symndx];
2655
2656 BFD_ASSERT (*specific_refcount > 0);
2657 --*specific_refcount;
2658 if (*specific_refcount == 0)
2659 {
2660 /* We don't need the .got entry any more. */
2661 sgot->size -= got_element_size;
2662 if (info->shared)
2663 srelgot->size -= sizeof (Elf32_External_Rela);
2664 }
2665 }
2666 break;
2667
2668 case R_CRIS_16_GOTPLT:
2669 case R_CRIS_32_GOTPLT:
2670 /* For local symbols, treat these like GOT relocs. */
2671 if (h == NULL)
2672 goto local_got_reloc;
2673 /* Fall through. */
2674
2675 case R_CRIS_32_PLT_GOTREL:
2676 /* FIXME: We don't garbage-collect away the .got section. */
2677 if (local_got_refcounts != NULL)
2678 local_got_refcounts[-1]--;
2679 /* Fall through. */
2680
2681 case R_CRIS_8_PCREL:
2682 case R_CRIS_16_PCREL:
2683 case R_CRIS_32_PCREL:
2684 case R_CRIS_32_PLT_PCREL:
2685 if (h != NULL)
2686 {
2687 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2688 && h->plt.refcount > 0)
2689 --h->plt.refcount;
2690 }
2691 break;
2692
2693 case R_CRIS_32_DTPREL:
2694 /* This'd be a .dtpreld entry in e.g. debug info. */
2695 if ((sec->flags & SEC_ALLOC) == 0)
2696 break;
2697 /* Fall through. */
2698 case R_CRIS_16_DTPREL:
2699 htab->dtpmod_refcount--;
2700 if (htab->dtpmod_refcount == 0)
2701 htab->next_gotplt_entry -= 8;
2702 BFD_ASSERT (local_got_refcounts != NULL);
2703 local_got_refcounts[-1]--;
2704 break;
2705
2706 default:
2707 break;
2708 }
2709 }
2710
2711 return TRUE;
2712 }
2713
2714 /* The elf_backend_plt_sym_val hook function. */
2715
2716 static bfd_vma
2717 cris_elf_plt_sym_val (bfd_vma i, const asection *plt,
2718 const arelent *rel ATTRIBUTE_UNUSED)
2719 {
2720 bfd_size_type plt_entry_size;
2721
2722 plt_entry_size
2723 = (bfd_get_mach (plt->owner) == bfd_mach_cris_v32
2724 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2725
2726 return plt->vma + (i + 1) * plt_entry_size;
2727 }
2728
2729 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2730 entry but we found we will not create any. Called when we find we will
2731 not have any PLT for this symbol, by for example
2732 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2733 or elf_cris_size_dynamic_sections if no dynamic sections will be
2734 created (we're only linking static objects). */
2735
2736 static bfd_boolean
2737 elf_cris_adjust_gotplt_to_got (h, p)
2738 struct elf_cris_link_hash_entry *h;
2739 PTR p;
2740 {
2741 struct bfd_link_info *info = (struct bfd_link_info *) p;
2742
2743 if (h->root.root.type == bfd_link_hash_warning)
2744 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2745
2746 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2747 if (h->gotplt_refcount <= 0)
2748 return TRUE;
2749
2750 if (h->reg_got_refcount > 0)
2751 {
2752 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2753 Probably not necessary at this stage, but keeping them accurate
2754 helps avoiding surprises later. */
2755 h->root.got.refcount += h->gotplt_refcount;
2756 h->reg_got_refcount += h->gotplt_refcount;
2757 h->gotplt_refcount = 0;
2758 }
2759 else
2760 {
2761 /* No GOT entry for this symbol. We need to create one. */
2762 bfd *dynobj = elf_hash_table (info)->dynobj;
2763 asection *sgot;
2764 asection *srelgot;
2765
2766 BFD_ASSERT (dynobj != NULL);
2767 sgot = bfd_get_section_by_name (dynobj, ".got");
2768 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2769
2770 /* Put accurate refcounts there. */
2771 h->root.got.refcount += h->gotplt_refcount;
2772 h->reg_got_refcount = h->gotplt_refcount;
2773
2774 h->gotplt_refcount = 0;
2775
2776 /* We always have a .got and a .rela.got section if there were
2777 GOTPLT relocs in input. */
2778 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2779
2780 /* Allocate space in the .got section. */
2781 sgot->size += 4;
2782
2783 /* Allocate relocation space. */
2784 srelgot->size += sizeof (Elf32_External_Rela);
2785 }
2786
2787 return TRUE;
2788 }
2789
2790 /* Try to fold PLT entries with GOT entries. There are two cases when we
2791 want to do this:
2792
2793 - When all PLT references are GOTPLT references, and there are GOT
2794 references, and this is not the executable. We don't have to
2795 generate a PLT at all.
2796
2797 - When there are both (ordinary) PLT references and GOT references,
2798 and this isn't the executable.
2799 We want to make the PLT reference use the ordinary GOT entry rather
2800 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2801 since the GOT entry will have to be resolved at startup anyway.
2802
2803 Though the latter case is handled when room for the PLT is allocated,
2804 not here.
2805
2806 By folding into the GOT, we may need a round-trip to a PLT in the
2807 executable for calls, a loss in performance. Still, losing a
2808 reloc is a win in size and at least in start-up time.
2809
2810 Note that this function is called before symbols are forced local by
2811 version scripts. The differing cases are handled by
2812 elf_cris_hide_symbol. */
2813
2814 static bfd_boolean
2815 elf_cris_try_fold_plt_to_got (h, p)
2816 struct elf_cris_link_hash_entry *h;
2817 PTR p;
2818 {
2819 struct bfd_link_info *info = (struct bfd_link_info *) p;
2820
2821 /* If there are no GOT references for this symbol, we can't fold any
2822 other reference so there's nothing to do. Likewise if there are no
2823 PLT references; GOTPLT references included. */
2824 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2825 return TRUE;
2826
2827 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2828 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2829
2830 if (h->gotplt_refcount == h->root.plt.refcount)
2831 {
2832 /* The only PLT references are GOTPLT references, and there are GOT
2833 references. Convert PLT to GOT references. */
2834 if (! elf_cris_adjust_gotplt_to_got (h, info))
2835 return FALSE;
2836
2837 /* Clear the PLT references, so no PLT will be created. */
2838 h->root.plt.offset = (bfd_vma) -1;
2839 }
2840
2841 return TRUE;
2842 }
2843
2844 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2845 to use a GOT entry (and create one) rather than requiring a GOTPLT
2846 entry. */
2847
2848 static void
2849 elf_cris_hide_symbol (info, h, force_local)
2850 struct bfd_link_info *info;
2851 struct elf_link_hash_entry *h;
2852 bfd_boolean force_local;
2853 {
2854 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2855
2856 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2857 }
2858
2859 /* Adjust a symbol defined by a dynamic object and referenced by a
2860 regular object. The current definition is in some section of the
2861 dynamic object, but we're not including those sections. We have to
2862 change the definition to something the rest of the link can
2863 understand. */
2864
2865 static bfd_boolean
2866 elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info,
2867 struct elf_link_hash_entry *h)
2868 {
2869 struct elf_cris_link_hash_table * htab;
2870 bfd *dynobj;
2871 asection *s;
2872 bfd_size_type plt_entry_size;
2873
2874 htab = elf_cris_hash_table (info);
2875 if (htab == NULL)
2876 return FALSE;
2877
2878 dynobj = elf_hash_table (info)->dynobj;
2879
2880 /* Make sure we know what is going on here. */
2881 BFD_ASSERT (dynobj != NULL
2882 && (h->needs_plt
2883 || h->u.weakdef != NULL
2884 || (h->def_dynamic
2885 && h->ref_regular
2886 && !h->def_regular)));
2887
2888 plt_entry_size
2889 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2890 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2891
2892 /* If this is a function, put it in the procedure linkage table. We
2893 will fill in the contents of the procedure linkage table later,
2894 when we know the address of the .got section. */
2895 if (h->type == STT_FUNC
2896 || h->needs_plt)
2897 {
2898 /* If we link a program (not a DSO), we'll get rid of unnecessary
2899 PLT entries; we point to the actual symbols -- even for pic
2900 relocs, because a program built with -fpic should have the same
2901 result as one built without -fpic, specifically considering weak
2902 symbols.
2903 FIXME: m68k and i386 differ here, for unclear reasons. */
2904 if (! info->shared
2905 && !h->def_dynamic)
2906 {
2907 /* This case can occur if we saw a PLT reloc in an input file,
2908 but the symbol was not defined by a dynamic object. In such
2909 a case, we don't actually need to build a procedure linkage
2910 table, and we can just do an absolute or PC reloc instead, or
2911 change a .got.plt index to a .got index for GOTPLT relocs. */
2912 BFD_ASSERT (h->needs_plt);
2913 h->needs_plt = 0;
2914 h->plt.offset = (bfd_vma) -1;
2915 return
2916 elf_cris_adjust_gotplt_to_got ((struct
2917 elf_cris_link_hash_entry *) h,
2918 info);
2919 }
2920
2921 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2922 where a pointer-equivalent symbol was unimportant (i.e. more
2923 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2924 of the PLT. We can't for the executable, because the GOT
2925 entries will point to the PLT there (and be constant). */
2926 if (info->shared
2927 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2928 h, info))
2929 return FALSE;
2930
2931 /* GC or folding may have rendered this entry unused. */
2932 if (h->plt.refcount <= 0)
2933 {
2934 h->needs_plt = 0;
2935 h->plt.offset = (bfd_vma) -1;
2936 return TRUE;
2937 }
2938
2939 /* Make sure this symbol is output as a dynamic symbol. */
2940 if (h->dynindx == -1)
2941 {
2942 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2943 return FALSE;
2944 }
2945
2946 s = bfd_get_section_by_name (dynobj, ".plt");
2947 BFD_ASSERT (s != NULL);
2948
2949 /* If this is the first .plt entry, make room for the special
2950 first entry. */
2951 if (s->size == 0)
2952 s->size += plt_entry_size;
2953
2954 /* If this symbol is not defined in a regular file, and we are
2955 not generating a shared library, then set the symbol to this
2956 location in the .plt. */
2957 if (!info->shared
2958 && !h->def_regular)
2959 {
2960 h->root.u.def.section = s;
2961 h->root.u.def.value = s->size;
2962 }
2963
2964 /* If there's already a GOT entry, use that, not a .got.plt. A
2965 GOT field still has a reference count when we get here; it's
2966 not yet changed to an offset. We can't do this for an
2967 executable, because then the reloc associated with the PLT
2968 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2969 this to elf_cris_try_fold_plt_to_got. */
2970 if (info->shared && h->got.refcount > 0)
2971 {
2972 h->got.refcount += h->plt.refcount;
2973
2974 /* Mark the PLT offset to use the GOT entry by setting the low
2975 bit in the plt offset; it is always a multiple of
2976 plt_entry_size (which is at least a multiple of 2). */
2977 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2978
2979 /* Change the PLT refcount to an offset. */
2980 h->plt.offset = s->size;
2981
2982 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2983 that the got entry should be used instead. */
2984 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2985 h)->gotplt_offset == 0);
2986
2987 /* Make room for this entry. */
2988 s->size += plt_entry_size;
2989
2990 return TRUE;
2991 }
2992
2993 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2994 h->plt.offset = s->size;
2995
2996 /* Make room for this entry. */
2997 s->size += plt_entry_size;
2998
2999 /* We also need to make an entry in the .got.plt section, which
3000 will be placed in the .got section by the linker script. */
3001 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
3002 = htab->next_gotplt_entry;
3003 htab->next_gotplt_entry += 4;
3004
3005 s = bfd_get_section_by_name (dynobj, ".got.plt");
3006 BFD_ASSERT (s != NULL);
3007 s->size += 4;
3008
3009 /* We also need to make an entry in the .rela.plt section. */
3010
3011 s = bfd_get_section_by_name (dynobj, ".rela.plt");
3012 BFD_ASSERT (s != NULL);
3013 s->size += sizeof (Elf32_External_Rela);
3014
3015 return TRUE;
3016 }
3017
3018 /* Reinitialize the plt offset now that it is not used as a reference
3019 count any more. */
3020 h->plt.offset = (bfd_vma) -1;
3021
3022 /* If this is a weak symbol, and there is a real definition, the
3023 processor independent code will have arranged for us to see the
3024 real definition first, and we can just use the same value. */
3025 if (h->u.weakdef != NULL)
3026 {
3027 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3028 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3029 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3030 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3031 return TRUE;
3032 }
3033
3034 /* This is a reference to a symbol defined by a dynamic object which
3035 is not a function. */
3036
3037 /* If we are creating a shared library, we must presume that the
3038 only references to the symbol are via the global offset table.
3039 For such cases we need not do anything here; the relocations will
3040 be handled correctly by relocate_section. */
3041 if (info->shared)
3042 return TRUE;
3043
3044 /* If there are no references to this symbol that do not use the
3045 GOT, we don't need to generate a copy reloc. */
3046 if (!h->non_got_ref)
3047 return TRUE;
3048
3049 if (h->size == 0)
3050 {
3051 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3052 h->root.root.string);
3053 return TRUE;
3054 }
3055
3056 /* We must allocate the symbol in our .dynbss section, which will
3057 become part of the .bss section of the executable. There will be
3058 an entry for this symbol in the .dynsym section. The dynamic
3059 object will contain position independent code, so all references
3060 from the dynamic object to this symbol will go through the global
3061 offset table. The dynamic linker will use the .dynsym entry to
3062 determine the address it must put in the global offset table, so
3063 both the dynamic object and the regular object will refer to the
3064 same memory location for the variable. */
3065
3066 s = bfd_get_section_by_name (dynobj, ".dynbss");
3067 BFD_ASSERT (s != NULL);
3068
3069 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3070 copy the initial value out of the dynamic object and into the
3071 runtime process image. We need to remember the offset into the
3072 .rela.bss section we are going to use. */
3073 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3074 {
3075 asection *srel;
3076
3077 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3078 BFD_ASSERT (srel != NULL);
3079 srel->size += sizeof (Elf32_External_Rela);
3080 h->needs_copy = 1;
3081 }
3082
3083 return _bfd_elf_adjust_dynamic_copy (h, s);
3084 }
3085
3086 /* Adjust our "subclass" elements for an indirect symbol. */
3087
3088 static void
3089 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3090 struct elf_link_hash_entry *dir,
3091 struct elf_link_hash_entry *ind)
3092 {
3093 struct elf_cris_link_hash_entry *edir, *eind;
3094
3095 edir = (struct elf_cris_link_hash_entry *) dir;
3096 eind = (struct elf_cris_link_hash_entry *) ind;
3097
3098 /* Only indirect symbols are replaced; we're not interested in
3099 updating any of EIND's fields for other symbols. */
3100 if (eind->root.root.type != bfd_link_hash_indirect)
3101 {
3102 /* Still, we need to copy flags for e.g. weak definitions. */
3103 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3104 return;
3105 }
3106
3107 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3108
3109 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3110 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3111 if (eind->pcrel_relocs_copied != NULL)
3112 {
3113 if (edir->pcrel_relocs_copied != NULL)
3114 {
3115 struct elf_cris_pcrel_relocs_copied **pp;
3116 struct elf_cris_pcrel_relocs_copied *p;
3117
3118 /* Add reloc counts against the indirect sym to the direct sym
3119 list. Merge any entries against the same section. */
3120 for (pp = &eind->pcrel_relocs_copied; *pp != NULL;)
3121 {
3122 struct elf_cris_pcrel_relocs_copied *q;
3123 p = *pp;
3124 for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next)
3125 if (q->section == p->section)
3126 {
3127 q->count += p->count;
3128 *pp = p->next;
3129 break;
3130 }
3131 if (q == NULL)
3132 pp = &p->next;
3133 }
3134 *pp = edir->pcrel_relocs_copied;
3135 }
3136 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3137 }
3138 XMOVE (gotplt_refcount);
3139 XMOVE (gotplt_offset);
3140 XMOVE (reg_got_refcount);
3141 XMOVE (tprel_refcount);
3142 XMOVE (dtp_refcount);
3143 #undef XMOVE
3144 #undef XMOVOPZ
3145
3146 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3147 }
3148
3149 /* Look through the relocs for a section during the first phase. */
3150
3151 static bfd_boolean
3152 cris_elf_check_relocs (bfd *abfd,
3153 struct bfd_link_info *info,
3154 asection *sec,
3155 const Elf_Internal_Rela *relocs)
3156 {
3157 struct elf_cris_link_hash_table * htab;
3158 bfd *dynobj;
3159 Elf_Internal_Shdr *symtab_hdr;
3160 struct elf_link_hash_entry **sym_hashes;
3161 bfd_signed_vma *local_got_refcounts;
3162 const Elf_Internal_Rela *rel;
3163 const Elf_Internal_Rela *rel_end;
3164 asection *sgot;
3165 asection *srelgot;
3166 asection *sreloc;
3167
3168 if (info->relocatable)
3169 return TRUE;
3170
3171 htab = elf_cris_hash_table (info);
3172 if (htab == NULL)
3173 return FALSE;
3174
3175 dynobj = elf_hash_table (info)->dynobj;
3176 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3177 sym_hashes = elf_sym_hashes (abfd);
3178 local_got_refcounts = elf_local_got_refcounts (abfd);
3179
3180 sgot = NULL;
3181 srelgot = NULL;
3182 sreloc = NULL;
3183
3184 rel_end = relocs + sec->reloc_count;
3185 for (rel = relocs; rel < rel_end; rel++)
3186 {
3187 struct elf_link_hash_entry *h;
3188 unsigned long r_symndx;
3189 enum elf_cris_reloc_type r_type;
3190 bfd_signed_vma got_element_size = 4;
3191 unsigned long r_symndx_lgot = INT_MAX;
3192
3193 r_symndx = ELF32_R_SYM (rel->r_info);
3194 if (r_symndx < symtab_hdr->sh_info)
3195 {
3196 h = NULL;
3197 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3198 }
3199 else
3200 {
3201 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3202 while (h->root.type == bfd_link_hash_indirect
3203 || h->root.type == bfd_link_hash_warning)
3204 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3205 }
3206
3207 r_type = ELF32_R_TYPE (rel->r_info);
3208
3209 /* Some relocs require linker-created sections; we need to hang them
3210 on the first input bfd we found that contained dynamic relocs. */
3211 switch (r_type)
3212 {
3213 case R_CRIS_32_DTPREL:
3214 if ((sec->flags & SEC_ALLOC) == 0)
3215 /* This'd be a .dtpreld entry in e.g. debug info. We have
3216 several different switch statements below, but none of
3217 that is needed; we need no preparations for resolving
3218 R_CRIS_32_DTPREL into a non-allocated section (debug
3219 info), so let's just move on to the next
3220 relocation. */
3221 continue;
3222 /* Fall through. */
3223 case R_CRIS_16_DTPREL:
3224 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3225 entry at index 3. */
3226 if (htab->dtpmod_refcount == 0)
3227 htab->next_gotplt_entry += 8;
3228
3229 htab->dtpmod_refcount++;
3230 /* Fall through. */
3231
3232 case R_CRIS_32_IE:
3233 case R_CRIS_32_GD:
3234 case R_CRIS_16_GOT_GD:
3235 case R_CRIS_32_GOT_GD:
3236 case R_CRIS_32_GOT_TPREL:
3237 case R_CRIS_16_GOT_TPREL:
3238 case R_CRIS_16_GOT:
3239 case R_CRIS_32_GOT:
3240 case R_CRIS_32_GOTREL:
3241 case R_CRIS_32_PLT_GOTREL:
3242 case R_CRIS_32_PLT_PCREL:
3243 case R_CRIS_16_GOTPLT:
3244 case R_CRIS_32_GOTPLT:
3245 if (dynobj == NULL)
3246 {
3247 elf_hash_table (info)->dynobj = dynobj = abfd;
3248
3249 /* We could handle this if we can get a handle on the
3250 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3251 that, we must insist on dynobj being a specific mach. */
3252 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3253 {
3254 (*_bfd_error_handler)
3255 (_("%B, section %A:\n v10/v32 compatible object %s"
3256 " must not contain a PIC relocation"),
3257 abfd, sec);
3258 return FALSE;
3259 }
3260
3261 /* Create the .got section, so we can assume it's always
3262 present whenever there's a dynobj. */
3263 if (!_bfd_elf_create_got_section (dynobj, info))
3264 return FALSE;
3265 }
3266
3267 if (sgot == NULL)
3268 sgot = bfd_get_section_by_name (dynobj, ".got");
3269
3270 if (local_got_refcounts == NULL)
3271 {
3272 bfd_size_type amt;
3273
3274 /* We use index local_got_refcounts[-1] to count all
3275 GOT-relative relocations that do not have explicit
3276 GOT entries. */
3277 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3278 amt *= sizeof (bfd_signed_vma);
3279 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3280 if (local_got_refcounts == NULL)
3281 return FALSE;
3282
3283 local_got_refcounts++;
3284 elf_local_got_refcounts (abfd) = local_got_refcounts;
3285 }
3286 break;
3287
3288 default:
3289 break;
3290 }
3291
3292 /* Some relocs require a global offset table (but perhaps not a
3293 specific GOT entry). */
3294 switch (r_type)
3295 {
3296 case R_CRIS_16_DTPREL:
3297 case R_CRIS_32_DTPREL:
3298 /* Not requesting .got.rela for an executable: the contents
3299 of the first entry is constant there. For a shared
3300 library, we need .got.rela for the R_CRIS_DTPMOD
3301 relocation at index 3. */
3302 if (!info->shared)
3303 break;
3304 /* Fall through. */
3305
3306 case R_CRIS_32_IE:
3307 case R_CRIS_32_GD:
3308 case R_CRIS_16_GOT_GD:
3309 case R_CRIS_32_GOT_GD:
3310 case R_CRIS_32_GOT_TPREL:
3311 case R_CRIS_16_GOT_TPREL:
3312 /* Fall through. */
3313
3314 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3315 entry only for local symbols. Unfortunately, we don't know
3316 until later on if there's a version script that forces the
3317 symbol local. We must have the .rela.got section in place
3318 before we know if the symbol looks global now, so we need
3319 to treat the reloc just like for R_CRIS_16_GOT and
3320 R_CRIS_32_GOT. */
3321 case R_CRIS_16_GOTPLT:
3322 case R_CRIS_32_GOTPLT:
3323 case R_CRIS_16_GOT:
3324 case R_CRIS_32_GOT:
3325 if (srelgot == NULL
3326 && (h != NULL || info->shared))
3327 {
3328 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3329 if (srelgot == NULL)
3330 {
3331 srelgot = bfd_make_section_with_flags (dynobj,
3332 ".rela.got",
3333 (SEC_ALLOC
3334 | SEC_LOAD
3335 | SEC_HAS_CONTENTS
3336 | SEC_IN_MEMORY
3337 | SEC_LINKER_CREATED
3338 | SEC_READONLY));
3339 if (srelgot == NULL
3340 || !bfd_set_section_alignment (dynobj, srelgot, 2))
3341 return FALSE;
3342 }
3343 }
3344 break;
3345
3346 default:
3347 break;
3348 }
3349
3350 /* Warn and error for invalid input. */
3351 switch (r_type)
3352 {
3353 case R_CRIS_32_IE:
3354 case R_CRIS_32_TPREL:
3355 case R_CRIS_16_TPREL:
3356 case R_CRIS_32_GD:
3357 if (info->shared)
3358 {
3359 (*_bfd_error_handler)
3360 (_("%B, section %A:\n relocation %s not valid"
3361 " in a shared object;"
3362 " typically an option mixup, recompile with -fPIC"),
3363 abfd,
3364 sec,
3365 cris_elf_howto_table[r_type].name);
3366 /* Don't return FALSE here; we want messages for all of
3367 these and the error behavior is ungraceful
3368 anyway. */
3369 }
3370 default:
3371 break;
3372 }
3373
3374 switch (r_type)
3375 {
3376 case R_CRIS_32_GD:
3377 case R_CRIS_16_GOT_GD:
3378 case R_CRIS_32_GOT_GD:
3379 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3380 got_element_size = 8;
3381 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3382 break;
3383
3384 case R_CRIS_16_DTPREL:
3385 case R_CRIS_32_DTPREL:
3386 /* These two just request for the constant-index
3387 module-local tls_index-sized GOT entry, which we add
3388 elsewhere. */
3389 break;
3390
3391 case R_CRIS_32_IE:
3392 case R_CRIS_32_GOT_TPREL:
3393 case R_CRIS_16_GOT_TPREL:
3394 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3395
3396 /* Those relocs also require that a DSO is of type
3397 Initial Exec. Like other targets, we don't reset this
3398 flag even if the relocs are GC:ed away. */
3399 if (info->shared)
3400 info->flags |= DF_STATIC_TLS;
3401 break;
3402
3403 /* Let's list the other assembler-generated TLS-relocs too,
3404 just to show that they're not forgotten. */
3405 case R_CRIS_16_TPREL:
3406 case R_CRIS_32_TPREL:
3407 default:
3408 break;
3409 }
3410
3411 switch (r_type)
3412 {
3413 case R_CRIS_16_GOTPLT:
3414 case R_CRIS_32_GOTPLT:
3415 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3416 entry) is eliminated. We can only do this for a non-local
3417 symbol. */
3418 if (h != NULL)
3419 {
3420 elf_cris_hash_entry (h)->gotplt_refcount++;
3421 goto handle_gotplt_reloc;
3422 }
3423 /* If h is NULL then this is a local symbol, and we must make a
3424 GOT entry for it, so handle it like a GOT reloc. */
3425 /* Fall through. */
3426
3427 case R_CRIS_32_IE:
3428 case R_CRIS_32_GD:
3429 case R_CRIS_16_GOT_GD:
3430 case R_CRIS_32_GOT_GD:
3431 case R_CRIS_32_GOT_TPREL:
3432 case R_CRIS_16_GOT_TPREL:
3433 case R_CRIS_16_GOT:
3434 case R_CRIS_32_GOT:
3435 /* This symbol requires a global offset table entry. */
3436 if (h != NULL)
3437 {
3438 if (h->got.refcount == 0)
3439 {
3440 /* Make sure this symbol is output as a dynamic symbol. */
3441 if (h->dynindx == -1)
3442 {
3443 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3444 return FALSE;
3445 }
3446 }
3447
3448 /* Update the sum of reloc counts for this symbol. */
3449 h->got.refcount++;
3450
3451 switch (r_type)
3452 {
3453 case R_CRIS_16_GOT:
3454 case R_CRIS_32_GOT:
3455 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3456 {
3457 /* Allocate space in the .got section. */
3458 sgot->size += got_element_size;
3459 /* Allocate relocation space. */
3460 srelgot->size += sizeof (Elf32_External_Rela);
3461 }
3462 elf_cris_hash_entry (h)->reg_got_refcount++;
3463 break;
3464
3465 case R_CRIS_32_GD:
3466 case R_CRIS_16_GOT_GD:
3467 case R_CRIS_32_GOT_GD:
3468 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3469 {
3470 /* Allocate space in the .got section. */
3471 sgot->size += got_element_size;
3472 /* Allocate relocation space. */
3473 srelgot->size += sizeof (Elf32_External_Rela);
3474 }
3475 elf_cris_hash_entry (h)->dtp_refcount++;
3476 break;
3477
3478 case R_CRIS_32_IE:
3479 case R_CRIS_32_GOT_TPREL:
3480 case R_CRIS_16_GOT_TPREL:
3481 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3482 {
3483 /* Allocate space in the .got section. */
3484 sgot->size += got_element_size;
3485 /* Allocate relocation space. */
3486 srelgot->size += sizeof (Elf32_External_Rela);
3487 }
3488 elf_cris_hash_entry (h)->tprel_refcount++;
3489 break;
3490
3491 default:
3492 BFD_FAIL ();
3493 break;
3494 }
3495 }
3496 else
3497 {
3498 /* This is a global offset table entry for a local symbol. */
3499 if (local_got_refcounts[r_symndx_lgot] == 0)
3500 {
3501 sgot->size += got_element_size;
3502 if (info->shared)
3503 {
3504 /* If we are generating a shared object, we need
3505 to output a R_CRIS_RELATIVE reloc so that the
3506 dynamic linker can adjust this GOT entry.
3507 Similarly for non-regular got entries. */
3508 srelgot->size += sizeof (Elf32_External_Rela);
3509 }
3510 }
3511 /* Update the reloc-specific count. */
3512 local_got_refcounts[r_symndx_lgot]++;
3513
3514 /* This one is the sum of all the others. */
3515 local_got_refcounts[r_symndx]++;
3516 }
3517 break;
3518
3519 case R_CRIS_16_DTPREL:
3520 case R_CRIS_32_DTPREL:
3521 case R_CRIS_32_GOTREL:
3522 /* This reference requires a global offset table.
3523 FIXME: The actual refcount isn't used currently; the .got
3524 section can't be removed if there were any references in the
3525 input. */
3526 local_got_refcounts[-1]++;
3527 break;
3528
3529 handle_gotplt_reloc:
3530
3531 case R_CRIS_32_PLT_GOTREL:
3532 /* This reference requires a global offset table. */
3533 local_got_refcounts[-1]++;
3534 /* Fall through. */
3535
3536 case R_CRIS_32_PLT_PCREL:
3537 /* This symbol requires a procedure linkage table entry. We
3538 actually build the entry in adjust_dynamic_symbol,
3539 because this might be a case of linking PIC code which is
3540 never referenced by a dynamic object, in which case we
3541 don't need to generate a procedure linkage table entry
3542 after all. */
3543
3544 /* Beware: if we'd check for visibility of the symbol here
3545 (and not marking the need for a PLT when non-visible), we'd
3546 get into trouble with keeping handling consistent with
3547 regards to relocs found before definition and GOTPLT
3548 handling. Eliminable PLT entries will be dealt with later
3549 anyway. */
3550 if (h == NULL)
3551 continue;
3552
3553 h->needs_plt = 1;
3554 h->plt.refcount++;
3555 break;
3556
3557 case R_CRIS_8:
3558 case R_CRIS_16:
3559 case R_CRIS_32:
3560 /* Let's help debug shared library creation. Any of these
3561 relocs *can* be used in shared libs, but pages containing
3562 them cannot be shared, so they're not appropriate for
3563 common use. Don't warn for sections we don't care about,
3564 such as debug sections or non-constant sections. We
3565 can't help tables of (global) function pointers, for
3566 example, though they must be emitted in a (writable) data
3567 section to avoid having impure text sections. */
3568 if (info->shared
3569 && (sec->flags & SEC_ALLOC) != 0
3570 && (sec->flags & SEC_READONLY) != 0)
3571 {
3572 /* FIXME: How do we make this optionally a warning only? */
3573 (*_bfd_error_handler)
3574 (_("%B, section %A:\n relocation %s should not"
3575 " be used in a shared object; recompile with -fPIC"),
3576 abfd,
3577 sec,
3578 cris_elf_howto_table[r_type].name);
3579 }
3580 if (h != NULL)
3581 {
3582 h->non_got_ref = 1;
3583
3584 /* Make sure a plt entry is created for this symbol if it
3585 turns out to be a function defined by a dynamic object. */
3586 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3587 h->plt.refcount++;
3588 }
3589
3590 /* If we are creating a shared library and this is not a local
3591 symbol, we need to copy the reloc into the shared library.
3592 However when linking with -Bsymbolic and this is a global
3593 symbol which is defined in an object we are including in the
3594 link (i.e., DEF_REGULAR is set), then we can resolve the
3595 reloc directly. At this point we have not seen all the input
3596 files, so it is possible that DEF_REGULAR is not set now but
3597 will be set later (it is never cleared). In case of a weak
3598 definition, DEF_REGULAR may be cleared later by a strong
3599 definition in a shared library. We account for that
3600 possibility below by storing information in the relocs_copied
3601 field of the hash table entry. A similar situation occurs
3602 when creating shared libraries and symbol visibility changes
3603 render the symbol local. */
3604
3605 /* No need to do anything if we're not creating a shared object. */
3606 if (! info->shared)
3607 break;
3608
3609 /* We don't need to handle relocs into sections not going into
3610 the "real" output. */
3611 if ((sec->flags & SEC_ALLOC) == 0)
3612 break;
3613
3614 /* We may need to create a reloc section in the dynobj and made room
3615 for this reloc. */
3616 if (sreloc == NULL)
3617 {
3618 sreloc = _bfd_elf_make_dynamic_reloc_section
3619 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3620
3621 if (sreloc == NULL)
3622 return FALSE;
3623 }
3624
3625 if (sec->flags & SEC_READONLY)
3626 info->flags |= DF_TEXTREL;
3627
3628 sreloc->size += sizeof (Elf32_External_Rela);
3629 break;
3630
3631 case R_CRIS_8_PCREL:
3632 case R_CRIS_16_PCREL:
3633 case R_CRIS_32_PCREL:
3634 if (h != NULL)
3635 {
3636 h->non_got_ref = 1;
3637
3638 /* Make sure a plt entry is created for this symbol if it
3639 turns out to be a function defined by a dynamic object. */
3640 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3641 h->plt.refcount++;
3642 }
3643
3644 /* If we are creating a shared library and this is not a local
3645 symbol, we need to copy the reloc into the shared library.
3646 However when linking with -Bsymbolic and this is a global
3647 symbol which is defined in an object we are including in the
3648 link (i.e., DEF_REGULAR is set), then we can resolve the
3649 reloc directly. At this point we have not seen all the input
3650 files, so it is possible that DEF_REGULAR is not set now but
3651 will be set later (it is never cleared). In case of a weak
3652 definition, DEF_REGULAR may be cleared later by a strong
3653 definition in a shared library. We account for that
3654 possibility below by storing information in the relocs_copied
3655 field of the hash table entry. A similar situation occurs
3656 when creating shared libraries and symbol visibility changes
3657 render the symbol local. */
3658
3659 /* No need to do anything if we're not creating a shared object. */
3660 if (! info->shared)
3661 break;
3662
3663 /* We don't need to handle relocs into sections not going into
3664 the "real" output. */
3665 if ((sec->flags & SEC_ALLOC) == 0)
3666 break;
3667
3668 /* If the symbol is local, then we know already we can
3669 eliminate the reloc. */
3670 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3671 break;
3672
3673 /* If this is with -Bsymbolic and the symbol isn't weak, and
3674 is defined by an ordinary object (the ones we include in
3675 this shared library) then we can also eliminate the
3676 reloc. See comment above for more eliminable cases which
3677 we can't identify at this time. */
3678 if (info->symbolic
3679 && h->root.type != bfd_link_hash_defweak
3680 && h->def_regular)
3681 break;
3682
3683 /* We may need to create a reloc section in the dynobj and made room
3684 for this reloc. */
3685 if (sreloc == NULL)
3686 {
3687 sreloc = _bfd_elf_make_dynamic_reloc_section
3688 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3689
3690 if (sreloc == NULL)
3691 return FALSE;
3692 }
3693
3694 sreloc->size += sizeof (Elf32_External_Rela);
3695
3696 /* We count the number of PC relative relocations we have
3697 entered for this symbol, so that we can discard them
3698 again if the symbol is later defined by a regular object.
3699 We know that h is really a pointer to an
3700 elf_cris_link_hash_entry. */
3701 {
3702 struct elf_cris_link_hash_entry *eh;
3703 struct elf_cris_pcrel_relocs_copied *p;
3704
3705 eh = elf_cris_hash_entry (h);
3706
3707 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3708 if (p->section == sec)
3709 break;
3710
3711 if (p == NULL)
3712 {
3713 p = ((struct elf_cris_pcrel_relocs_copied *)
3714 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3715 if (p == NULL)
3716 return FALSE;
3717 p->next = eh->pcrel_relocs_copied;
3718 eh->pcrel_relocs_copied = p;
3719 p->section = sec;
3720 p->count = 0;
3721 p->r_type = r_type;
3722 }
3723
3724 ++p->count;
3725 }
3726 break;
3727
3728 /* This relocation describes the C++ object vtable hierarchy.
3729 Reconstruct it for later use during GC. */
3730 case R_CRIS_GNU_VTINHERIT:
3731 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3732 return FALSE;
3733 break;
3734
3735 /* This relocation describes which C++ vtable entries are actually
3736 used. Record for later use during GC. */
3737 case R_CRIS_GNU_VTENTRY:
3738 BFD_ASSERT (h != NULL);
3739 if (h != NULL
3740 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3741 return FALSE;
3742 break;
3743
3744 case R_CRIS_16_TPREL:
3745 case R_CRIS_32_TPREL:
3746 /* Already warned above, when necessary. */
3747 break;
3748
3749 default:
3750 /* Other relocs do not appear here. */
3751 bfd_set_error (bfd_error_bad_value);
3752 return FALSE;
3753 }
3754 }
3755
3756 return TRUE;
3757 }
3758
3759 /* Set the sizes of the dynamic sections. */
3760
3761 static bfd_boolean
3762 elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3763 struct bfd_link_info *info)
3764 {
3765 struct elf_cris_link_hash_table * htab;
3766 bfd *dynobj;
3767 asection *s;
3768 bfd_boolean plt;
3769 bfd_boolean relocs;
3770
3771 htab = elf_cris_hash_table (info);
3772 if (htab == NULL)
3773 return FALSE;
3774
3775 dynobj = elf_hash_table (info)->dynobj;
3776 BFD_ASSERT (dynobj != NULL);
3777
3778 if (elf_hash_table (info)->dynamic_sections_created)
3779 {
3780 /* Set the contents of the .interp section to the interpreter. */
3781 if (info->executable)
3782 {
3783 s = bfd_get_section_by_name (dynobj, ".interp");
3784 BFD_ASSERT (s != NULL);
3785 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3786 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3787 }
3788 }
3789 else
3790 {
3791 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3792 elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got,
3793 info);
3794
3795 /* We may have created entries in the .rela.got section.
3796 However, if we are not creating the dynamic sections, we will
3797 not actually use these entries. Reset the size of .rela.got,
3798 which will cause it to get stripped from the output file
3799 below. */
3800 s = bfd_get_section_by_name (dynobj, ".rela.got");
3801 if (s != NULL)
3802 s->size = 0;
3803 }
3804
3805 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3806 relative relocs against symbols defined in a regular object. We
3807 allocated space for them in the check_relocs routine, but we will not
3808 fill them in in the relocate_section routine. We also discard space
3809 for relocs that have become for local symbols due to symbol
3810 visibility changes. For programs, we discard space for relocs for
3811 symbols not referenced by any dynamic object. */
3812 if (info->shared)
3813 elf_cris_link_hash_traverse (htab,
3814 elf_cris_discard_excess_dso_dynamics,
3815 info);
3816 else
3817 elf_cris_link_hash_traverse (htab,
3818 elf_cris_discard_excess_program_dynamics,
3819 info);
3820
3821 /* The check_relocs and adjust_dynamic_symbol entry points have
3822 determined the sizes of the various dynamic sections. Allocate
3823 memory for them. */
3824 plt = FALSE;
3825 relocs = FALSE;
3826 for (s = dynobj->sections; s != NULL; s = s->next)
3827 {
3828 const char *name;
3829
3830 if ((s->flags & SEC_LINKER_CREATED) == 0)
3831 continue;
3832
3833 /* It's OK to base decisions on the section name, because none
3834 of the dynobj section names depend upon the input files. */
3835 name = bfd_get_section_name (dynobj, s);
3836
3837 if (strcmp (name, ".plt") == 0)
3838 {
3839 /* Remember whether there is a PLT. */
3840 plt = s->size != 0;
3841 }
3842 else if (strcmp (name, ".got.plt") == 0)
3843 {
3844 /* The .got.plt contains the .got header as well as the
3845 actual .got.plt contents. The .got header may contain a
3846 R_CRIS_DTPMOD entry at index 3. */
3847 s->size += htab->dtpmod_refcount != 0
3848 ? 8 : 0;
3849 }
3850 else if (CONST_STRNEQ (name, ".rela"))
3851 {
3852 if (strcmp (name, ".rela.got") == 0
3853 && htab->dtpmod_refcount != 0
3854 && info->shared)
3855 s->size += sizeof (Elf32_External_Rela);
3856
3857 if (s->size != 0)
3858 {
3859 /* Remember whether there are any reloc sections other
3860 than .rela.plt. */
3861 if (strcmp (name, ".rela.plt") != 0)
3862 relocs = TRUE;
3863
3864 /* We use the reloc_count field as a counter if we need
3865 to copy relocs into the output file. */
3866 s->reloc_count = 0;
3867 }
3868 }
3869 else if (! CONST_STRNEQ (name, ".got")
3870 && strcmp (name, ".dynbss") != 0)
3871 {
3872 /* It's not one of our sections, so don't allocate space. */
3873 continue;
3874 }
3875
3876 if (s->size == 0)
3877 {
3878 /* If we don't need this section, strip it from the
3879 output file. This is mostly to handle .rela.bss and
3880 .rela.plt. We must create both sections in
3881 create_dynamic_sections, because they must be created
3882 before the linker maps input sections to output
3883 sections. The linker does that before
3884 adjust_dynamic_symbol is called, and it is that
3885 function which decides whether anything needs to go
3886 into these sections. */
3887 s->flags |= SEC_EXCLUDE;
3888 continue;
3889 }
3890
3891 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3892 continue;
3893
3894 /* Allocate memory for the section contents. We use bfd_zalloc here
3895 in case unused entries are not reclaimed before the section's
3896 contents are written out. This should not happen, but this way
3897 if it does, we will not write out garbage. For reloc sections,
3898 this will make entries have the type R_CRIS_NONE. */
3899 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3900 if (s->contents == NULL)
3901 return FALSE;
3902 }
3903
3904 if (elf_hash_table (info)->dynamic_sections_created)
3905 {
3906 /* Add some entries to the .dynamic section. We fill in the
3907 values later, in elf_cris_finish_dynamic_sections, but we
3908 must add the entries now so that we get the correct size for
3909 the .dynamic section. The DT_DEBUG entry is filled in by the
3910 dynamic linker and used by the debugger. */
3911 #define add_dynamic_entry(TAG, VAL) \
3912 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3913
3914 if (!info->shared)
3915 {
3916 if (!add_dynamic_entry (DT_DEBUG, 0))
3917 return FALSE;
3918 }
3919
3920 if (plt)
3921 {
3922 if (!add_dynamic_entry (DT_PLTGOT, 0)
3923 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3924 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3925 || !add_dynamic_entry (DT_JMPREL, 0))
3926 return FALSE;
3927 }
3928
3929 if (relocs)
3930 {
3931 if (!add_dynamic_entry (DT_RELA, 0)
3932 || !add_dynamic_entry (DT_RELASZ, 0)
3933 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3934 return FALSE;
3935 }
3936
3937 if ((info->flags & DF_TEXTREL) != 0)
3938 {
3939 if (!add_dynamic_entry (DT_TEXTREL, 0))
3940 return FALSE;
3941 info->flags |= DF_TEXTREL;
3942 }
3943 }
3944 #undef add_dynamic_entry
3945
3946 return TRUE;
3947 }
3948
3949 /* This function is called via elf_cris_link_hash_traverse if we are
3950 creating a shared object. In the -Bsymbolic case, it discards the
3951 space allocated to copy PC relative relocs against symbols which
3952 are defined in regular objects. For the normal non-symbolic case,
3953 we also discard space for relocs that have become local due to
3954 symbol visibility changes. We allocated space for them in the
3955 check_relocs routine, but we won't fill them in in the
3956 relocate_section routine. */
3957
3958 static bfd_boolean
3959 elf_cris_discard_excess_dso_dynamics (h, inf)
3960 struct elf_cris_link_hash_entry *h;
3961 PTR inf;
3962 {
3963 struct elf_cris_pcrel_relocs_copied *s;
3964 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3965
3966 if (h->root.root.type == bfd_link_hash_warning)
3967 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3968
3969 /* If a symbol has been forced local or we have found a regular
3970 definition for the symbolic link case, then we won't be needing
3971 any relocs. */
3972 if (h->root.def_regular
3973 && (h->root.forced_local
3974 || info->symbolic))
3975 {
3976 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3977 {
3978 asection *sreloc
3979 = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info)
3980 ->dynobj,
3981 s->section,
3982 /*rela?*/ TRUE);
3983 sreloc->size -= s->count * sizeof (Elf32_External_Rela);
3984 }
3985 return TRUE;
3986 }
3987
3988 /* If we have accounted for PC-relative relocs for read-only
3989 sections, now is the time to warn for them. We can't do it in
3990 cris_elf_check_relocs, because we don't know the status of all
3991 symbols at that time (and it's common to force symbols local
3992 late). */
3993
3994 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3995 if ((s->section->flags & SEC_READONLY) != 0)
3996 {
3997 /* FIXME: How do we make this optionally a warning only? */
3998 (*_bfd_error_handler)
3999 (_("%B, section `%A', to symbol `%s':\n"
4000 " relocation %s should not be used"
4001 " in a shared object; recompile with -fPIC"),
4002 s->section->owner,
4003 s->section,
4004 h->root.root.root.string,
4005 cris_elf_howto_table[s->r_type].name);
4006
4007 info->flags |= DF_TEXTREL;
4008 }
4009
4010 return TRUE;
4011 }
4012
4013 /* This function is called via elf_cris_link_hash_traverse if we are *not*
4014 creating a shared object. We discard space for relocs for symbols put
4015 in the .got, but which we found we do not have to resolve at run-time. */
4016
4017 static bfd_boolean
4018 elf_cris_discard_excess_program_dynamics (h, inf)
4019 struct elf_cris_link_hash_entry *h;
4020 PTR inf;
4021 {
4022 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4023
4024 if (h->root.root.type == bfd_link_hash_warning)
4025 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
4026
4027 /* If we're not creating a shared library and have a symbol which is
4028 referred to by .got references, but the symbol is defined locally,
4029 (or rather, not defined by a DSO) then lose the reloc for the .got
4030 (don't allocate room for it). Likewise for relocs for something
4031 for which we create a PLT. */
4032 if (!h->root.def_dynamic
4033 || h->root.plt.refcount > 0)
4034 {
4035 if (h->reg_got_refcount > 0
4036 /* The size of this section is only valid and in sync with the
4037 various reference counts if we do dynamic; don't decrement it
4038 otherwise. */
4039 && elf_hash_table (info)->dynamic_sections_created)
4040 {
4041 bfd *dynobj = elf_hash_table (info)->dynobj;
4042 asection *srelgot;
4043
4044 BFD_ASSERT (dynobj != NULL);
4045
4046 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4047
4048 BFD_ASSERT (srelgot != NULL);
4049
4050 srelgot->size -= sizeof (Elf32_External_Rela);
4051 }
4052
4053 /* If the locally-defined symbol isn't used by a DSO, then we don't
4054 have to export it as a dynamic symbol. This was already done for
4055 functions; doing this for all symbols would presumably not
4056 introduce new problems. Of course we don't do this if we're
4057 exporting all dynamic symbols. */
4058 if (! info->export_dynamic
4059 && h->root.dynindx != -1
4060 && !h->root.def_dynamic
4061 && !h->root.ref_dynamic)
4062 {
4063 h->root.dynindx = -1;
4064 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4065 h->root.dynstr_index);
4066 }
4067 }
4068
4069 return TRUE;
4070 }
4071
4072 /* Reject a file depending on presence and expectation of prefixed
4073 underscores on symbols. */
4074
4075 static bfd_boolean
4076 cris_elf_object_p (abfd)
4077 bfd *abfd;
4078 {
4079 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4080 return FALSE;
4081
4082 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4083 return (bfd_get_symbol_leading_char (abfd) == '_');
4084 else
4085 return (bfd_get_symbol_leading_char (abfd) == 0);
4086 }
4087
4088 /* Mark presence or absence of leading underscore. Set machine type
4089 flags from mach type. */
4090
4091 static void
4092 cris_elf_final_write_processing (abfd, linker)
4093 bfd *abfd;
4094 bfd_boolean linker ATTRIBUTE_UNUSED;
4095 {
4096 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4097
4098 e_flags &= ~EF_CRIS_UNDERSCORE;
4099 if (bfd_get_symbol_leading_char (abfd) == '_')
4100 e_flags |= EF_CRIS_UNDERSCORE;
4101
4102 switch (bfd_get_mach (abfd))
4103 {
4104 case bfd_mach_cris_v0_v10:
4105 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4106 break;
4107
4108 case bfd_mach_cris_v10_v32:
4109 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4110 break;
4111
4112 case bfd_mach_cris_v32:
4113 e_flags |= EF_CRIS_VARIANT_V32;
4114 break;
4115
4116 default:
4117 _bfd_abort (__FILE__, __LINE__,
4118 _("Unexpected machine number"));
4119 }
4120
4121 elf_elfheader (abfd)->e_flags = e_flags;
4122 }
4123
4124 /* Set the mach type from e_flags value. */
4125
4126 static bfd_boolean
4127 cris_elf_set_mach_from_flags (abfd, flags)
4128 bfd *abfd;
4129 unsigned long flags;
4130 {
4131 switch (flags & EF_CRIS_VARIANT_MASK)
4132 {
4133 case EF_CRIS_VARIANT_ANY_V0_V10:
4134 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4135 break;
4136
4137 case EF_CRIS_VARIANT_V32:
4138 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4139 break;
4140
4141 case EF_CRIS_VARIANT_COMMON_V10_V32:
4142 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4143 break;
4144
4145 default:
4146 /* Since we don't recognize them, we obviously can't support them
4147 with this code; we'd have to require that all future handling
4148 would be optional. */
4149 bfd_set_error (bfd_error_wrong_format);
4150 return FALSE;
4151 }
4152
4153 return TRUE;
4154 }
4155
4156 /* Display the flags field. */
4157
4158 static bfd_boolean
4159 cris_elf_print_private_bfd_data (abfd, ptr)
4160 bfd *abfd;
4161 PTR ptr;
4162 {
4163 FILE *file = (FILE *) ptr;
4164
4165 BFD_ASSERT (abfd != NULL && ptr != NULL);
4166
4167 _bfd_elf_print_private_bfd_data (abfd, ptr);
4168
4169 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4170
4171 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4172 fprintf (file, _(" [symbols have a _ prefix]"));
4173 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4174 == EF_CRIS_VARIANT_COMMON_V10_V32)
4175 fprintf (file, _(" [v10 and v32]"));
4176 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4177 == EF_CRIS_VARIANT_V32)
4178 fprintf (file, _(" [v32]"));
4179
4180 fputc ('\n', file);
4181 return TRUE;
4182 }
4183
4184 /* Don't mix files with and without a leading underscore. */
4185
4186 static bfd_boolean
4187 cris_elf_merge_private_bfd_data (ibfd, obfd)
4188 bfd *ibfd;
4189 bfd *obfd;
4190 {
4191 int imach, omach;
4192
4193 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4194 return FALSE;
4195
4196 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4197 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4198 return TRUE;
4199
4200 imach = bfd_get_mach (ibfd);
4201
4202 if (! elf_flags_init (obfd))
4203 {
4204 /* This happens when ld starts out with a 'blank' output file. */
4205 elf_flags_init (obfd) = TRUE;
4206
4207 /* We ignore the linker-set mach, and instead set it according to
4208 the first input file. This would also happen if we could
4209 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4210 This allows us to keep the same linker config across
4211 cris(v0..v10) and crisv32. The drawback is that we can't force
4212 the output type, which might be a sane thing to do for a
4213 v10+v32 compatibility object. */
4214 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4215 return FALSE;
4216 }
4217
4218 if (bfd_get_symbol_leading_char (ibfd)
4219 != bfd_get_symbol_leading_char (obfd))
4220 {
4221 (*_bfd_error_handler)
4222 (bfd_get_symbol_leading_char (ibfd) == '_'
4223 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4224 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4225 ibfd);
4226 bfd_set_error (bfd_error_bad_value);
4227 return FALSE;
4228 }
4229
4230 omach = bfd_get_mach (obfd);
4231
4232 if (imach != omach)
4233 {
4234 /* We can get an incompatible combination only if either is
4235 bfd_mach_cris_v32, and the other one isn't compatible. */
4236 if ((imach == bfd_mach_cris_v32
4237 && omach != bfd_mach_cris_v10_v32)
4238 || (omach == bfd_mach_cris_v32
4239 && imach != bfd_mach_cris_v10_v32))
4240 {
4241 (*_bfd_error_handler)
4242 ((imach == bfd_mach_cris_v32)
4243 ? _("%B contains CRIS v32 code, incompatible"
4244 " with previous objects")
4245 : _("%B contains non-CRIS-v32 code, incompatible"
4246 " with previous objects"),
4247 ibfd);
4248 bfd_set_error (bfd_error_bad_value);
4249 return FALSE;
4250 }
4251
4252 /* We don't have to check the case where the input is compatible
4253 with v10 and v32, because the output is already known to be set
4254 to the other (compatible) mach. */
4255 if (omach == bfd_mach_cris_v10_v32
4256 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4257 return FALSE;
4258 }
4259
4260 return TRUE;
4261 }
4262
4263 /* Do side-effects of e_flags copying to obfd. */
4264
4265 static bfd_boolean
4266 cris_elf_copy_private_bfd_data (ibfd, obfd)
4267 bfd *ibfd;
4268 bfd *obfd;
4269 {
4270 /* Call the base function. */
4271 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4272 return FALSE;
4273
4274 /* If output is big-endian for some obscure reason, stop here. */
4275 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4276 return FALSE;
4277
4278 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4279 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4280 return TRUE;
4281
4282 /* Do what we really came here for. */
4283 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4284 }
4285
4286 static enum elf_reloc_type_class
4287 elf_cris_reloc_type_class (rela)
4288 const Elf_Internal_Rela *rela;
4289 {
4290 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4291 switch (r_type)
4292 {
4293 case R_CRIS_RELATIVE:
4294 return reloc_class_relative;
4295 case R_CRIS_JUMP_SLOT:
4296 return reloc_class_plt;
4297 case R_CRIS_COPY:
4298 return reloc_class_copy;
4299 default:
4300 return reloc_class_normal;
4301 }
4302 }
4303
4304 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4305 two GOT entries from three types with two different sizes. We handle
4306 it as a single entry, so we can use the regular offset-calculation
4307 machinery. */
4308
4309 static bfd_vma
4310 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4311 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4312 struct elf_link_hash_entry *hr,
4313 bfd *ibfd,
4314 unsigned long symndx)
4315 {
4316 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4317 bfd_vma eltsiz = 0;
4318
4319 /* We may have one regular GOT entry or up to two TLS GOT
4320 entries. */
4321 if (h == NULL)
4322 {
4323 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4324 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4325
4326 BFD_ASSERT (local_got_refcounts != NULL);
4327
4328 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4329 {
4330 /* We can't have a variable referred to both as a regular
4331 variable and through TLS relocs. */
4332 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4333 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4334 return 4;
4335 }
4336
4337 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4338 eltsiz += 8;
4339
4340 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4341 eltsiz += 4;
4342 }
4343 else
4344 {
4345 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4346 if (hh->reg_got_refcount > 0)
4347 {
4348 /* The actual error-on-input is emitted elsewhere. */
4349 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4350 return 4;
4351 }
4352
4353 if (hh->dtp_refcount > 0)
4354 eltsiz += 8;
4355
4356 if (hh->tprel_refcount > 0)
4357 eltsiz += 4;
4358 }
4359
4360 /* We're only called when h->got.refcount is non-zero, so we must
4361 have a non-zero size. */
4362 BFD_ASSERT (eltsiz != 0);
4363 return eltsiz;
4364 }
4365 \f
4366 #define ELF_ARCH bfd_arch_cris
4367 #define ELF_MACHINE_CODE EM_CRIS
4368 #define ELF_MAXPAGESIZE 0x2000
4369
4370 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4371 #define TARGET_LITTLE_NAME "elf32-cris"
4372 #define elf_symbol_leading_char 0
4373
4374 #define elf_info_to_howto_rel NULL
4375 #define elf_info_to_howto cris_info_to_howto_rela
4376 #define elf_backend_relocate_section cris_elf_relocate_section
4377 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4378 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4379 #define elf_backend_plt_sym_val cris_elf_plt_sym_val
4380 #define elf_backend_check_relocs cris_elf_check_relocs
4381 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4382 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4383
4384 #define elf_backend_can_gc_sections 1
4385 #define elf_backend_can_refcount 1
4386
4387 #define elf_backend_object_p cris_elf_object_p
4388 #define elf_backend_final_write_processing \
4389 cris_elf_final_write_processing
4390 #define bfd_elf32_bfd_print_private_bfd_data \
4391 cris_elf_print_private_bfd_data
4392 #define bfd_elf32_bfd_merge_private_bfd_data \
4393 cris_elf_merge_private_bfd_data
4394 #define bfd_elf32_bfd_copy_private_bfd_data \
4395 cris_elf_copy_private_bfd_data
4396
4397 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4398 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4399
4400 #define bfd_elf32_bfd_link_hash_table_create \
4401 elf_cris_link_hash_table_create
4402 #define elf_backend_adjust_dynamic_symbol \
4403 elf_cris_adjust_dynamic_symbol
4404 #define elf_backend_copy_indirect_symbol \
4405 elf_cris_copy_indirect_symbol
4406 #define elf_backend_size_dynamic_sections \
4407 elf_cris_size_dynamic_sections
4408 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4409 #define elf_backend_finish_dynamic_symbol \
4410 elf_cris_finish_dynamic_symbol
4411 #define elf_backend_finish_dynamic_sections \
4412 elf_cris_finish_dynamic_sections
4413 #define elf_backend_create_dynamic_sections \
4414 _bfd_elf_create_dynamic_sections
4415 #define bfd_elf32_bfd_final_link \
4416 bfd_elf_gc_common_final_link
4417 #define elf_backend_hide_symbol elf_cris_hide_symbol
4418 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4419
4420 #define elf_backend_want_got_plt 1
4421 #define elf_backend_plt_readonly 1
4422 #define elf_backend_want_plt_sym 0
4423 #define elf_backend_got_header_size 12
4424 #define elf_backend_got_elt_size elf_cris_got_elt_size
4425
4426 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4427 linking and libraries (if it's a win of any significance). Until then,
4428 take the easy route. */
4429 #define elf_backend_may_use_rel_p 0
4430 #define elf_backend_may_use_rela_p 1
4431 #define elf_backend_rela_normal 1
4432
4433 #include "elf32-target.h"
4434
4435 #undef TARGET_LITTLE_SYM
4436 #undef TARGET_LITTLE_NAME
4437 #undef elf_symbol_leading_char
4438
4439 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4440 #define TARGET_LITTLE_NAME "elf32-us-cris"
4441 #define elf_symbol_leading_char '_'
4442 #undef elf32_bed
4443 #define elf32_bed elf32_us_cris_bed
4444
4445 #include "elf32-target.h"
git-cvsimport of binutils cvsroot