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PR ld/13991
[deliverable/binutils-gdb.git] / bfd / elf32-cris.c
1 /* CRIS-specific support for 32-bit ELF.
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
3 2010, 2011, 2012 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_lwpid = 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_lwpid = 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 && (_bfd_elf_section_offset (output_bfd, info,
1171 input_section,
1172 rel->r_offset)
1173 != (bfd_vma) -1))
1174 {
1175 _bfd_error_handler
1176 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1177 input_bfd,
1178 input_section,
1179 cris_elf_howto_table[r_type].name,
1180 symname);
1181 bfd_set_error (bfd_error_bad_value);
1182 return FALSE;
1183 }
1184 }
1185 }
1186
1187 if (sec != NULL && discarded_section (sec))
1188 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1189 rel, relend, howto, contents);
1190
1191 if (info->relocatable)
1192 continue;
1193
1194 switch (r_type)
1195 {
1196 case R_CRIS_16_GOTPLT:
1197 case R_CRIS_32_GOTPLT:
1198 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1199 but we require a PLT, and the PLT handling will take care of
1200 filling in the PLT-specific GOT entry. For the GOT offset,
1201 calculate it as we do when filling it in for the .got.plt
1202 section. If we don't have a PLT, punt to GOT handling. */
1203 if (h != NULL
1204 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1205 {
1206 asection *sgotplt
1207 = bfd_get_section_by_name (dynobj, ".got.plt");
1208 bfd_vma got_offset;
1209
1210 BFD_ASSERT (h->dynindx != -1);
1211 BFD_ASSERT (sgotplt != NULL);
1212
1213 got_offset
1214 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1215
1216 relocation = got_offset;
1217 break;
1218 }
1219
1220 /* We didn't make a PLT entry for this symbol. Maybe everything is
1221 folded into the GOT. Other than folding, this happens when
1222 statically linking PIC code, or when using -Bsymbolic. Check
1223 that we instead have a GOT entry as done for us by
1224 elf_cris_adjust_dynamic_symbol, and drop through into the
1225 ordinary GOT cases. This must not happen for the
1226 executable, because any reference it does to a function
1227 that is satisfied by a DSO must generate a PLT. We assume
1228 these call-specific relocs don't address non-functions. */
1229 if (h != NULL
1230 && (h->got.offset == (bfd_vma) -1
1231 || (!info->shared
1232 && !(h->def_regular
1233 || (!h->def_dynamic
1234 && h->root.type == bfd_link_hash_undefweak)))))
1235 {
1236 (*_bfd_error_handler)
1237 ((h->got.offset == (bfd_vma) -1)
1238 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1239 " against symbol `%s'")
1240 : _("%B, section %A: No PLT for relocation %s"
1241 " against symbol `%s'"),
1242 input_bfd,
1243 input_section,
1244 cris_elf_howto_table[r_type].name,
1245 (symname != NULL && symname[0] != '\0'
1246 ? symname : _("[whose name is lost]")));
1247
1248 /* FIXME: Perhaps blaming input is not the right thing to
1249 do; this is probably an internal error. But it is true
1250 that we didn't like that particular input. */
1251 bfd_set_error (bfd_error_bad_value);
1252 return FALSE;
1253 }
1254 /* Fall through. */
1255
1256 /* The size of the actual relocation is not used here; we only
1257 fill in the GOT table here. */
1258 case R_CRIS_16_GOT:
1259 case R_CRIS_32_GOT:
1260 {
1261 bfd_vma off;
1262
1263 /* Note that despite using RELA relocations, the .got contents
1264 is always filled in with the link-relative relocation
1265 value; the addend. */
1266
1267 if (h != NULL)
1268 {
1269 off = h->got.offset;
1270 BFD_ASSERT (off != (bfd_vma) -1);
1271
1272 if (!elf_hash_table (info)->dynamic_sections_created
1273 || (! info->shared
1274 && (h->def_regular
1275 || h->type == STT_FUNC
1276 || h->needs_plt))
1277 || (info->shared
1278 && (info->symbolic || h->dynindx == -1)
1279 && h->def_regular))
1280 {
1281 /* This wasn't checked above for ! info->shared, but
1282 must hold there if we get here; the symbol must
1283 be defined in the regular program or be undefweak
1284 or be a function or otherwise need a PLT. */
1285 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1286 || info->shared
1287 || h->def_regular
1288 || h->type == STT_FUNC
1289 || h->needs_plt
1290 || h->root.type == bfd_link_hash_undefweak);
1291
1292 /* This is actually a static link, or it is a
1293 -Bsymbolic link and the symbol is defined locally,
1294 or is undefweak, or the symbol was forced to be
1295 local because of a version file, or we're not
1296 creating a dynamic object. We must initialize this
1297 entry in the global offset table. Since the offset
1298 must always be a multiple of 4, we use the least
1299 significant bit to record whether we have
1300 initialized it already.
1301
1302 If this GOT entry should be runtime-initialized, we
1303 will create a .rela.got relocation entry to
1304 initialize the value. This is done in the
1305 finish_dynamic_symbol routine. */
1306 if ((off & 1) != 0)
1307 off &= ~1;
1308 else
1309 {
1310 bfd_put_32 (output_bfd, relocation,
1311 sgot->contents + off);
1312 h->got.offset |= 1;
1313 }
1314 }
1315 }
1316 else
1317 {
1318 BFD_ASSERT (local_got_offsets != NULL
1319 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1320
1321 off = local_got_offsets[r_symndx];
1322
1323 /* The offset must always be a multiple of 4. We use
1324 the least significant bit to record whether we have
1325 already generated the necessary reloc. */
1326 if ((off & 1) != 0)
1327 off &= ~1;
1328 else
1329 {
1330 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1331
1332 if (info->shared)
1333 {
1334 Elf_Internal_Rela outrel;
1335 bfd_byte *loc;
1336
1337 if (srelgot == NULL)
1338 srelgot
1339 = bfd_get_section_by_name (dynobj, ".rela.got");
1340 BFD_ASSERT (srelgot != NULL);
1341
1342 outrel.r_offset = (sgot->output_section->vma
1343 + sgot->output_offset
1344 + off);
1345 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1346 outrel.r_addend = relocation;
1347 loc = srelgot->contents;
1348 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1349 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1350 }
1351
1352 local_got_offsets[r_symndx] |= 1;
1353 }
1354 }
1355
1356 relocation = sgot->output_offset + off;
1357 if (rel->r_addend != 0)
1358 {
1359 /* We can't do anything for a relocation which is against
1360 a symbol *plus offset*. GOT holds relocations for
1361 symbols. Make this an error; the compiler isn't
1362 allowed to pass us these kinds of things. */
1363 if (h == NULL)
1364 (*_bfd_error_handler)
1365 (_("%B, section %A: relocation %s with non-zero addend %d"
1366 " against local symbol"),
1367 input_bfd,
1368 input_section,
1369 cris_elf_howto_table[r_type].name,
1370 rel->r_addend);
1371 else
1372 (*_bfd_error_handler)
1373 (_("%B, section %A: relocation %s with non-zero addend %d"
1374 " against symbol `%s'"),
1375 input_bfd,
1376 input_section,
1377 cris_elf_howto_table[r_type].name,
1378 rel->r_addend,
1379 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1380
1381 bfd_set_error (bfd_error_bad_value);
1382 return FALSE;
1383 }
1384 }
1385 break;
1386
1387 case R_CRIS_32_GOTREL:
1388 /* This relocation must only be performed against local symbols.
1389 It's also ok when we link a program and the symbol is either
1390 defined in an ordinary (non-DSO) object or is undefined weak. */
1391 if (h != NULL
1392 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1393 && !(!info->shared
1394 && (h->def_regular
1395 || (!h->def_dynamic
1396 && h->root.type == bfd_link_hash_undefweak))))
1397 {
1398 (*_bfd_error_handler)
1399 (_("%B, section %A: relocation %s is"
1400 " not allowed for global symbol: `%s'"),
1401 input_bfd,
1402 input_section,
1403 cris_elf_howto_table[r_type].name,
1404 symname);
1405 bfd_set_error (bfd_error_bad_value);
1406 return FALSE;
1407 }
1408
1409 /* This can happen if we get a link error with the input ELF
1410 variant mismatching the output variant. Emit an error so
1411 it's noticed if it happens elsewhere. */
1412 if (sgot == NULL)
1413 {
1414 (*_bfd_error_handler)
1415 (_("%B, section %A: relocation %s with no GOT created"),
1416 input_bfd,
1417 input_section,
1418 cris_elf_howto_table[r_type].name);
1419 bfd_set_error (bfd_error_bad_value);
1420 return FALSE;
1421 }
1422
1423 /* This relocation is like a PC-relative one, except the
1424 reference point is the location of GOT. Note that
1425 sgot->output_offset is not involved in this calculation. We
1426 always want the start of entire .got section, not the
1427 position after the reserved header. */
1428 relocation -= sgot->output_section->vma;
1429 break;
1430
1431 case R_CRIS_32_PLT_PCREL:
1432 /* Relocation is to the entry for this symbol in the
1433 procedure linkage table. */
1434
1435 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1436 without using the procedure linkage table. */
1437 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1438 break;
1439
1440 if (h->plt.offset == (bfd_vma) -1
1441 || splt == NULL)
1442 {
1443 /* We didn't make a PLT entry for this symbol. This
1444 happens when statically linking PIC code, or when
1445 using -Bsymbolic. */
1446 break;
1447 }
1448
1449 relocation = (splt->output_section->vma
1450 + splt->output_offset
1451 + h->plt.offset);
1452 break;
1453
1454 case R_CRIS_32_PLT_GOTREL:
1455 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1456 start of the .got section. See also comment at
1457 R_CRIS_32_GOT. */
1458 relocation -= sgot->output_section->vma;
1459
1460 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1461 without using the procedure linkage table. */
1462 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1463 break;
1464
1465 if (h->plt.offset == (bfd_vma) -1
1466 || splt == NULL)
1467 {
1468 /* We didn't make a PLT entry for this symbol. This
1469 happens when statically linking PIC code, or when
1470 using -Bsymbolic. */
1471 break;
1472 }
1473
1474 relocation = (splt->output_section->vma
1475 + splt->output_offset
1476 + h->plt.offset
1477 - sgot->output_section->vma);
1478 break;
1479
1480 case R_CRIS_8_PCREL:
1481 case R_CRIS_16_PCREL:
1482 case R_CRIS_32_PCREL:
1483 /* If the symbol was local, we need no shlib-specific handling. */
1484 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1485 || h->dynindx == -1)
1486 break;
1487
1488 /* Fall through. */
1489 case R_CRIS_8:
1490 case R_CRIS_16:
1491 case R_CRIS_32:
1492 if (info->shared
1493 && r_symndx != STN_UNDEF
1494 && (input_section->flags & SEC_ALLOC) != 0
1495 && ((r_type != R_CRIS_8_PCREL
1496 && r_type != R_CRIS_16_PCREL
1497 && r_type != R_CRIS_32_PCREL)
1498 || (!info->symbolic
1499 || (h != NULL && !h->def_regular))))
1500 {
1501 Elf_Internal_Rela outrel;
1502 bfd_byte *loc;
1503 bfd_boolean skip, relocate;
1504
1505 /* When generating a shared object, these relocations
1506 are copied into the output file to be resolved at run
1507 time. */
1508
1509 if (sreloc == NULL)
1510 {
1511 sreloc = _bfd_elf_get_dynamic_reloc_section
1512 (dynobj, input_section, /*rela?*/ TRUE);
1513 /* The section should have been created in cris_elf_check_relocs,
1514 but that function will not be called for objects which fail in
1515 cris_elf_merge_private_bfd_data. */
1516 if (sreloc == NULL)
1517 {
1518 bfd_set_error (bfd_error_bad_value);
1519 return FALSE;
1520 }
1521 }
1522
1523 skip = FALSE;
1524 relocate = FALSE;
1525
1526 outrel.r_offset =
1527 _bfd_elf_section_offset (output_bfd, info, input_section,
1528 rel->r_offset);
1529 if (outrel.r_offset == (bfd_vma) -1)
1530 skip = TRUE;
1531 else if (outrel.r_offset == (bfd_vma) -2
1532 /* For now, undefined weak symbols with non-default
1533 visibility (yielding 0), like exception info for
1534 discarded sections, will get a R_CRIS_NONE
1535 relocation rather than no relocation, because we
1536 notice too late that the symbol doesn't need a
1537 relocation. */
1538 || (h != NULL
1539 && h->root.type == bfd_link_hash_undefweak
1540 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1541 skip = TRUE, relocate = TRUE;
1542 outrel.r_offset += (input_section->output_section->vma
1543 + input_section->output_offset);
1544
1545 if (skip)
1546 memset (&outrel, 0, sizeof outrel);
1547 /* h->dynindx may be -1 if the symbol was marked to
1548 become local. */
1549 else if (h != NULL
1550 && ((! info->symbolic && h->dynindx != -1)
1551 || !h->def_regular))
1552 {
1553 BFD_ASSERT (h->dynindx != -1);
1554 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1555 outrel.r_addend = relocation + rel->r_addend;
1556 }
1557 else
1558 {
1559 outrel.r_addend = relocation + rel->r_addend;
1560
1561 if (r_type == R_CRIS_32)
1562 {
1563 relocate = TRUE;
1564 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1565 }
1566 else
1567 {
1568 long indx;
1569
1570 if (bfd_is_abs_section (sec))
1571 indx = 0;
1572 else if (sec == NULL || sec->owner == NULL)
1573 {
1574 bfd_set_error (bfd_error_bad_value);
1575 return FALSE;
1576 }
1577 else
1578 {
1579 asection *osec;
1580
1581 /* We are turning this relocation into one
1582 against a section symbol. It would be
1583 proper to subtract the symbol's value,
1584 osec->vma, from the emitted reloc addend,
1585 but ld.so expects buggy relocs. */
1586 osec = sec->output_section;
1587 indx = elf_section_data (osec)->dynindx;
1588 if (indx == 0)
1589 {
1590 osec = htab->root.text_index_section;
1591 indx = elf_section_data (osec)->dynindx;
1592 }
1593 BFD_ASSERT (indx != 0);
1594 }
1595
1596 outrel.r_info = ELF32_R_INFO (indx, r_type);
1597 }
1598 }
1599
1600 loc = sreloc->contents;
1601 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1602 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1603
1604 /* This reloc will be computed at runtime, so there's no
1605 need to do anything now, except for R_CRIS_32 relocations
1606 that have been turned into R_CRIS_RELATIVE. */
1607 if (!relocate)
1608 continue;
1609 }
1610
1611 break;
1612
1613 case R_CRIS_16_DTPREL:
1614 case R_CRIS_32_DTPREL:
1615 /* This relocation must only be performed against local
1616 symbols, or to sections that are not loadable. It's also
1617 ok when we link a program and the symbol is defined in an
1618 ordinary (non-DSO) object (if it's undefined there, we've
1619 already seen an error). */
1620 if (h != NULL
1621 && (input_section->flags & SEC_ALLOC) != 0
1622 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1623 && (info->shared
1624 || (!h->def_regular
1625 && h->root.type != bfd_link_hash_undefined)))
1626 {
1627 (*_bfd_error_handler)
1628 ((h->root.type == bfd_link_hash_undefined)
1629 /* We shouldn't get here for GCC-emitted code. */
1630 ? _("%B, section %A: relocation %s has an undefined"
1631 " reference to `%s', perhaps a declaration mixup?")
1632 : ("%B, section %A: relocation %s is"
1633 " not allowed for `%s', a global symbol with default"
1634 " visibility, perhaps a declaration mixup?"),
1635 input_bfd,
1636 input_section,
1637 cris_elf_howto_table[r_type].name,
1638 symname != NULL && symname[0] != '\0'
1639 ? symname : _("[whose name is lost]"));
1640 bfd_set_error (bfd_error_bad_value);
1641 return FALSE;
1642 }
1643
1644 BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1645 || htab->dtpmod_refcount != 0);
1646
1647 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1648 already done so. Note that we do this in .got.plt, not
1649 in .got, as .got.plt contains the first part, still the
1650 reloc is against .got, because the linker script directs
1651 (is required to direct) them both into .got. */
1652 if (htab->dtpmod_refcount > 0
1653 && (input_section->flags & SEC_ALLOC) != 0)
1654 {
1655 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1656 BFD_ASSERT (sgotplt != NULL);
1657
1658 if (info->shared)
1659 {
1660 Elf_Internal_Rela outrel;
1661 bfd_byte *loc;
1662
1663 if (srelgot == NULL)
1664 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1665 BFD_ASSERT (srelgot != NULL);
1666 loc = srelgot->contents;
1667 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1668
1669 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1670 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1671 outrel.r_offset = (sgotplt->output_section->vma
1672 + sgotplt->output_offset
1673 + 12);
1674 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1675 outrel.r_addend = 0;
1676 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1677 }
1678 else
1679 {
1680 /* For an executable, the GOT entry contents is known. */
1681 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1682 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1683 }
1684
1685 /* Reverse the sign to mark that we've emitted the
1686 required GOT entry. */
1687 htab->dtpmod_refcount = - htab->dtpmod_refcount;
1688 }
1689
1690 /* The relocation is the offset from the start of the module
1691 TLS block to the (local) symbol. */
1692 relocation -= elf_hash_table (info)->tls_sec == NULL
1693 ? 0 : elf_hash_table (info)->tls_sec->vma;
1694 break;
1695
1696 case R_CRIS_32_GD:
1697 if (info->shared)
1698 {
1699 bfd_set_error (bfd_error_invalid_operation);
1700
1701 /* We've already informed in cris_elf_check_relocs that
1702 this is an error. */
1703 return FALSE;
1704 }
1705 /* Fall through. */
1706
1707 case R_CRIS_16_GOT_GD:
1708 case R_CRIS_32_GOT_GD:
1709 if (rel->r_addend != 0)
1710 {
1711 /* We can't do anything for a relocation which is against a
1712 symbol *plus offset*. The GOT holds relocations for
1713 symbols. Make this an error; the compiler isn't allowed
1714 to pass us these kinds of things. */
1715 (*_bfd_error_handler)
1716 (_("%B, section %A: relocation %s with non-zero addend %d"
1717 " against symbol `%s'"),
1718 input_bfd,
1719 input_section,
1720 cris_elf_howto_table[r_type].name,
1721 rel->r_addend,
1722 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1723
1724 bfd_set_error (bfd_error_bad_value);
1725 return FALSE;
1726 }
1727
1728 if (!info->shared
1729 && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1730 {
1731 /* Known contents of the GOT. */
1732 bfd_vma off;
1733
1734 /* The symbol is defined in the program, so just write
1735 (1, known_tpoffset) into the GOT. */
1736 relocation -= elf_hash_table (info)->tls_sec->vma;
1737
1738 if (h != NULL)
1739 {
1740 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1741 ? h->got.offset + 4 : h->got.offset;
1742 }
1743 else
1744 {
1745 off = local_got_offsets[r_symndx];
1746 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1747 off += 4;
1748 }
1749
1750 /* We use bit 1 of the offset as a flag for GOT entry with
1751 the R_CRIS_DTP reloc, setting it when we've emitted the
1752 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1753 relocs. */
1754 if ((off & 2) == 0)
1755 {
1756 off &= ~3;
1757
1758 if (h != NULL)
1759 h->got.offset |= 2;
1760 else
1761 local_got_offsets[r_symndx] |= 2;
1762
1763 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1764 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1765 }
1766 else
1767 off &= ~3;
1768
1769 relocation = sgot->output_offset + off
1770 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1771 }
1772 else
1773 {
1774 /* Not all parts of the GOT entry are known; emit a real
1775 relocation. */
1776 bfd_vma off;
1777
1778 if (h != NULL)
1779 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1780 ? h->got.offset + 4 : h->got.offset;
1781 else
1782 {
1783 off = local_got_offsets[r_symndx];
1784 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1785 off += 4;
1786 }
1787
1788 /* See above re bit 1 and bit 0 usage. */
1789 if ((off & 2) == 0)
1790 {
1791 Elf_Internal_Rela outrel;
1792 bfd_byte *loc;
1793
1794 off &= ~3;
1795
1796 if (h != NULL)
1797 h->got.offset |= 2;
1798 else
1799 local_got_offsets[r_symndx] |= 2;
1800
1801 /* Clear the target contents of the GOT (just as a
1802 gesture; it's already cleared on allocation): this
1803 relocation is not like the other dynrelocs. */
1804 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1805 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1806
1807 if (srelgot == NULL)
1808 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1809 BFD_ASSERT (srelgot != NULL);
1810
1811 if (h != NULL && h->dynindx != -1)
1812 {
1813 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1814 relocation = 0;
1815 }
1816 else
1817 {
1818 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1819
1820 /* NULL if we had an error. */
1821 relocation -= elf_hash_table (info)->tls_sec == NULL
1822 ? 0 : elf_hash_table (info)->tls_sec->vma;
1823 }
1824
1825 outrel.r_offset = (sgot->output_section->vma
1826 + sgot->output_offset
1827 + off);
1828 outrel.r_addend = relocation;
1829 loc = srelgot->contents;
1830 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1831
1832 /* NULL if we had an error. */
1833 if (srelgot->contents != NULL)
1834 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1835 }
1836 else
1837 off &= ~3;
1838
1839 relocation = sgot->output_offset + off
1840 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1841 }
1842
1843 /* The GOT-relative offset to the GOT entry is the
1844 relocation, or for R_CRIS_32_GD, the actual address of
1845 the GOT entry. */
1846 break;
1847
1848 case R_CRIS_32_IE:
1849 if (info->shared)
1850 {
1851 bfd_set_error (bfd_error_invalid_operation);
1852
1853 /* We've already informed in cris_elf_check_relocs that
1854 this is an error. */
1855 return FALSE;
1856 }
1857 /* Fall through. */
1858
1859 case R_CRIS_32_GOT_TPREL:
1860 case R_CRIS_16_GOT_TPREL:
1861 if (rel->r_addend != 0)
1862 {
1863 /* We can't do anything for a relocation which is
1864 against a symbol *plus offset*. GOT holds
1865 relocations for symbols. Make this an error; the
1866 compiler isn't allowed to pass us these kinds of
1867 things. */
1868 (*_bfd_error_handler)
1869 (_("%B, section %A: relocation %s with non-zero addend %d"
1870 " against symbol `%s'"),
1871 input_bfd,
1872 input_section,
1873 cris_elf_howto_table[r_type].name,
1874 rel->r_addend,
1875 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1876 bfd_set_error (bfd_error_bad_value);
1877 return FALSE;
1878 }
1879
1880 if (!info->shared && (h == NULL || h->def_regular))
1881 {
1882 /* Known contents of the GOT. */
1883 bfd_vma off;
1884
1885 /* The symbol is defined in the program, so just write
1886 the -prog_tls_size+known_tpoffset into the GOT. */
1887 relocation -= elf_hash_table (info)->tls_sec->vma;
1888 relocation -= elf_hash_table (info)->tls_size;
1889
1890 if (h != NULL)
1891 off = h->got.offset;
1892 else
1893 off = local_got_offsets[r_symndx];
1894
1895 /* Bit 0 is used to mark whether we've emitted the required
1896 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1897 is used similarly for R_CRIS_DTP, see above. */
1898 if ((off & 1) == 0)
1899 {
1900 off &= ~3;
1901
1902 if (h != NULL)
1903 h->got.offset |= 1;
1904 else
1905 local_got_offsets[r_symndx] |= 1;
1906
1907 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1908 }
1909 else
1910 off &= ~3;
1911
1912 relocation = sgot->output_offset + off
1913 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1914 }
1915 else
1916 {
1917 /* Emit a real relocation. */
1918 bfd_vma off;
1919
1920 if (h != NULL)
1921 off = h->got.offset;
1922 else
1923 off = local_got_offsets[r_symndx];
1924
1925 /* See above re usage of bit 0 and 1. */
1926 if ((off & 1) == 0)
1927 {
1928 Elf_Internal_Rela outrel;
1929 bfd_byte *loc;
1930
1931 off &= ~3;
1932
1933 if (h != NULL)
1934 h->got.offset |= 1;
1935 else
1936 local_got_offsets[r_symndx] |= 1;
1937
1938 if (srelgot == NULL)
1939 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1940 BFD_ASSERT (srelgot != NULL);
1941
1942 if (h != NULL && h->dynindx != -1)
1943 {
1944 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1945 relocation = 0;
1946 }
1947 else
1948 {
1949 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1950
1951 /* NULL if we had an error. */
1952 relocation -= elf_hash_table (info)->tls_sec == NULL
1953 ? 0 : elf_hash_table (info)->tls_sec->vma;
1954 }
1955
1956 /* Just "define" the initial contents in some
1957 semi-logical way. */
1958 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1959
1960 outrel.r_offset = (sgot->output_section->vma
1961 + sgot->output_offset
1962 + off);
1963 outrel.r_addend = relocation;
1964 loc = srelgot->contents;
1965 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1966 /* NULL if we had an error. */
1967 if (srelgot->contents != NULL)
1968 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1969 }
1970 else
1971 off &= ~3;
1972
1973 relocation = sgot->output_offset + off
1974 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1975 }
1976
1977 /* The GOT-relative offset to the GOT entry is the relocation,
1978 or for R_CRIS_32_GD, the actual address of the GOT entry. */
1979 break;
1980
1981 case R_CRIS_16_TPREL:
1982 case R_CRIS_32_TPREL:
1983 /* This relocation must only be performed against symbols
1984 defined in an ordinary (non-DSO) object. */
1985 if (info->shared)
1986 {
1987 bfd_set_error (bfd_error_invalid_operation);
1988
1989 /* We've already informed in cris_elf_check_relocs that
1990 this is an error. */
1991 return FALSE;
1992 }
1993
1994 if (h != NULL
1995 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1996 && !(h->def_regular || ELF_COMMON_DEF_P (h))
1997 /* If it's undefined, then an error message has already
1998 been emitted. */
1999 && h->root.type != bfd_link_hash_undefined)
2000 {
2001 (*_bfd_error_handler)
2002 (_("%B, section %A: relocation %s is"
2003 " not allowed for symbol: `%s'"
2004 " which is defined outside the program,"
2005 " perhaps a declaration mixup?"),
2006 input_bfd,
2007 input_section,
2008 cris_elf_howto_table[r_type].name,
2009 symname);
2010 bfd_set_error (bfd_error_bad_value);
2011 return FALSE;
2012 }
2013
2014 /* NULL if we had an error. */
2015 relocation -= elf_hash_table (info)->tls_sec == NULL
2016 ? 0
2017 : (elf_hash_table (info)->tls_sec->vma
2018 + elf_hash_table (info)->tls_size);
2019
2020 /* The TLS-relative offset is the relocation. */
2021 break;
2022
2023 default:
2024 BFD_FAIL ();
2025 return FALSE;
2026 }
2027
2028 r = cris_final_link_relocate (howto, input_bfd, input_section,
2029 contents, rel, relocation);
2030
2031 if (r != bfd_reloc_ok)
2032 {
2033 const char * msg = (const char *) NULL;
2034
2035 switch (r)
2036 {
2037 case bfd_reloc_overflow:
2038 r = info->callbacks->reloc_overflow
2039 (info, (h ? &h->root : NULL), symname, howto->name,
2040 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2041 if (additional_relocation_error_msg_count > 0)
2042 {
2043 additional_relocation_error_msg_count--;
2044 switch (r_type)
2045 {
2046 case R_CRIS_16_GOTPLT:
2047 case R_CRIS_16_GOT:
2048
2049 /* Not just TLS is involved here, so we make
2050 generation and message depend on -fPIC/-fpic
2051 only. */
2052 case R_CRIS_16_GOT_TPREL:
2053 case R_CRIS_16_GOT_GD:
2054 (*_bfd_error_handler)
2055 (_("(too many global variables for -fpic:"
2056 " recompile with -fPIC)"));
2057 break;
2058
2059 case R_CRIS_16_TPREL:
2060 case R_CRIS_16_DTPREL:
2061 (*_bfd_error_handler)
2062 (_("(thread-local data too big for -fpic or"
2063 " -msmall-tls: recompile with -fPIC or"
2064 " -mno-small-tls)"));
2065 break;
2066
2067 /* No known cause for overflow for other relocs. */
2068 default:
2069 break;
2070 }
2071 }
2072 break;
2073
2074 case bfd_reloc_undefined:
2075 r = info->callbacks->undefined_symbol
2076 (info, symname, input_bfd, input_section, rel->r_offset,
2077 TRUE);
2078 break;
2079
2080 case bfd_reloc_outofrange:
2081 msg = _("internal error: out of range error");
2082 break;
2083
2084 case bfd_reloc_notsupported:
2085 msg = _("internal error: unsupported relocation error");
2086 break;
2087
2088 case bfd_reloc_dangerous:
2089 msg = _("internal error: dangerous relocation");
2090 break;
2091
2092 default:
2093 msg = _("internal error: unknown error");
2094 break;
2095 }
2096
2097 if (msg)
2098 r = info->callbacks->warning
2099 (info, msg, symname, input_bfd, input_section, rel->r_offset);
2100
2101 if (! r)
2102 return FALSE;
2103 }
2104 }
2105
2106 return TRUE;
2107 }
2108 \f
2109 /* Finish up dynamic symbol handling. We set the contents of various
2110 dynamic sections here. */
2111
2112 static bfd_boolean
2113 elf_cris_finish_dynamic_symbol (bfd *output_bfd,
2114 struct bfd_link_info *info,
2115 struct elf_link_hash_entry *h,
2116 Elf_Internal_Sym *sym)
2117 {
2118 struct elf_cris_link_hash_table * htab;
2119 bfd *dynobj;
2120
2121 /* Where in the plt entry to put values. */
2122 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2123
2124 /* What offset to add to the distance to the first PLT entry for the
2125 value at plt_off3. */
2126 int plt_off3_value_bias = 4;
2127
2128 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2129 for PIC and non-PIC for v32 and pre-v32). */
2130 int plt_stub_offset = 8;
2131 int plt_entry_size = PLT_ENTRY_SIZE;
2132 const bfd_byte *plt_entry = elf_cris_plt_entry;
2133 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2134
2135 htab = elf_cris_hash_table (info);
2136 if (htab == NULL)
2137 return FALSE;
2138
2139 /* Adjust the various PLT entry offsets. */
2140 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2141 {
2142 plt_off2 = 14;
2143 plt_off3 = 20;
2144 plt_off3_value_bias = -2;
2145 plt_stub_offset = 12;
2146 plt_entry_size = PLT_ENTRY_SIZE_V32;
2147 plt_entry = elf_cris_plt_entry_v32;
2148 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2149 }
2150
2151 dynobj = elf_hash_table (info)->dynobj;
2152
2153 if (h->plt.offset != (bfd_vma) -1)
2154 {
2155 asection *splt;
2156 asection *sgotplt;
2157 asection *srela;
2158 bfd_vma got_base;
2159
2160 bfd_vma gotplt_offset
2161 = elf_cris_hash_entry (h)->gotplt_offset;
2162 Elf_Internal_Rela rela;
2163 bfd_byte *loc;
2164 bfd_boolean has_gotplt = gotplt_offset != 0;
2165
2166 /* Get the index in the .rela.plt relocations for the .got.plt
2167 entry that corresponds to this symbol.
2168 We have to count backwards here, and the result is only valid
2169 as an index into .rela.plt. We also have to undo the effect
2170 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2171 .got.plt) for which gotplt_offset is adjusted, because while
2172 that entry goes into .got.plt, its relocation goes into
2173 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2174 processed as part of the runtime lazy .rela.plt relocation).
2175 FIXME: There be literal constants here... */
2176 bfd_vma rela_plt_index
2177 = (htab->dtpmod_refcount != 0
2178 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2179
2180 /* Get the offset into the .got table of the entry that corresponds
2181 to this function. Note that we embed knowledge that "incoming"
2182 .got goes after .got.plt in the output without padding (pointer
2183 aligned). However, that knowledge is present in several other
2184 places too. */
2185 bfd_vma got_offset
2186 = (has_gotplt
2187 ? gotplt_offset
2188 : h->got.offset + htab->next_gotplt_entry);
2189
2190 /* This symbol has an entry in the procedure linkage table. Set it
2191 up. */
2192
2193 BFD_ASSERT (h->dynindx != -1);
2194
2195 splt = bfd_get_section_by_name (dynobj, ".plt");
2196 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2197 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2198 BFD_ASSERT (splt != NULL && sgotplt != NULL
2199 && (! has_gotplt || srela != NULL));
2200
2201 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2202
2203 /* Fill in the entry in the procedure linkage table. */
2204 if (! info->shared)
2205 {
2206 memcpy (splt->contents + h->plt.offset, plt_entry,
2207 plt_entry_size);
2208
2209 /* We need to enter the absolute address of the GOT entry here. */
2210 bfd_put_32 (output_bfd, got_base + got_offset,
2211 splt->contents + h->plt.offset + plt_off1);
2212 }
2213 else
2214 {
2215 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2216 plt_entry_size);
2217 bfd_put_32 (output_bfd, got_offset,
2218 splt->contents + h->plt.offset + plt_off1);
2219 }
2220
2221 /* Fill in the plt entry and make a relocation, if this is a "real"
2222 PLT entry. */
2223 if (has_gotplt)
2224 {
2225 /* Fill in the offset to the reloc table. */
2226 bfd_put_32 (output_bfd,
2227 rela_plt_index * sizeof (Elf32_External_Rela),
2228 splt->contents + h->plt.offset + plt_off2);
2229
2230 /* Fill in the offset to the first PLT entry, where to "jump". */
2231 bfd_put_32 (output_bfd,
2232 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2233 splt->contents + h->plt.offset + plt_off3);
2234
2235 /* Fill in the entry in the global offset table with the address of
2236 the relocating stub. */
2237 bfd_put_32 (output_bfd,
2238 (splt->output_section->vma
2239 + splt->output_offset
2240 + h->plt.offset
2241 + plt_stub_offset),
2242 sgotplt->contents + got_offset);
2243
2244 /* Fill in the entry in the .rela.plt section. */
2245 rela.r_offset = (sgotplt->output_section->vma
2246 + sgotplt->output_offset
2247 + got_offset);
2248 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2249 rela.r_addend = 0;
2250 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2251 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2252 }
2253
2254 if (!h->def_regular)
2255 {
2256 /* Mark the symbol as undefined, rather than as defined in
2257 the .plt section. Leave the value alone. */
2258 sym->st_shndx = SHN_UNDEF;
2259
2260 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2261 know whether resetting the value is significant; if it really
2262 is, rather than a quirk or bug in the sparc port, then I
2263 believe we'd see this elsewhere. */
2264 /* If the symbol is weak, we do need to clear the value.
2265 Otherwise, the PLT entry would provide a definition for
2266 the symbol even if the symbol wasn't defined anywhere,
2267 and so the symbol would never be NULL. */
2268 if (!h->ref_regular_nonweak)
2269 sym->st_value = 0;
2270 }
2271 }
2272
2273 /* For an ordinary program, we emit .got relocs only for symbols that
2274 are in the dynamic-symbols table and are either defined by the
2275 program or are undefined weak symbols, or are function symbols
2276 where we do not output a PLT: the PLT reloc was output above and all
2277 references to the function symbol are redirected to the PLT. */
2278 if (h->got.offset != (bfd_vma) -1
2279 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2280 && (info->shared
2281 || (h->dynindx != -1
2282 && h->plt.offset == (bfd_vma) -1
2283 && !h->def_regular
2284 && h->root.type != bfd_link_hash_undefweak)))
2285 {
2286 asection *sgot;
2287 asection *srela;
2288 Elf_Internal_Rela rela;
2289 bfd_byte *loc;
2290 bfd_byte *where;
2291
2292 /* This symbol has an entry in the global offset table. Set it up. */
2293
2294 sgot = bfd_get_section_by_name (dynobj, ".got");
2295 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2296 BFD_ASSERT (sgot != NULL && srela != NULL);
2297
2298 rela.r_offset = (sgot->output_section->vma
2299 + sgot->output_offset
2300 + (h->got.offset &~ (bfd_vma) 1));
2301
2302 /* If this is a static link, or it is a -Bsymbolic link and the
2303 symbol is defined locally or was forced to be local because
2304 of a version file, we just want to emit a RELATIVE reloc.
2305 The entry in the global offset table will already have been
2306 initialized in the relocate_section function. */
2307 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2308 if (! elf_hash_table (info)->dynamic_sections_created
2309 || (info->shared
2310 && (info->symbolic || h->dynindx == -1)
2311 && h->def_regular))
2312 {
2313 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2314 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2315 }
2316 else
2317 {
2318 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2319 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2320 rela.r_addend = 0;
2321 }
2322
2323 loc = srela->contents;
2324 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2325 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2326 }
2327
2328 if (h->needs_copy)
2329 {
2330 asection *s;
2331 Elf_Internal_Rela rela;
2332 bfd_byte *loc;
2333
2334 /* This symbol needs a copy reloc. Set it up. */
2335
2336 BFD_ASSERT (h->dynindx != -1
2337 && (h->root.type == bfd_link_hash_defined
2338 || h->root.type == bfd_link_hash_defweak));
2339
2340 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2341 ".rela.bss");
2342 BFD_ASSERT (s != NULL);
2343
2344 rela.r_offset = (h->root.u.def.value
2345 + h->root.u.def.section->output_section->vma
2346 + h->root.u.def.section->output_offset);
2347 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2348 rela.r_addend = 0;
2349 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2350 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2351 }
2352
2353 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2354 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2355 || h == elf_hash_table (info)->hgot)
2356 sym->st_shndx = SHN_ABS;
2357
2358 return TRUE;
2359 }
2360 \f
2361 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2362 offsets were changed, as part of -z combreloc handling, from those we
2363 computed. */
2364
2365 static bfd_boolean
2366 elf_cris_finish_dynamic_sections (output_bfd, info)
2367 bfd *output_bfd;
2368 struct bfd_link_info *info;
2369 {
2370 bfd *dynobj;
2371 asection *sgot;
2372 asection *sdyn;
2373
2374 dynobj = elf_hash_table (info)->dynobj;
2375
2376 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2377 BFD_ASSERT (sgot != NULL);
2378 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2379
2380 if (elf_hash_table (info)->dynamic_sections_created)
2381 {
2382 asection *splt;
2383 Elf32_External_Dyn *dyncon, *dynconend;
2384
2385 splt = bfd_get_section_by_name (dynobj, ".plt");
2386 BFD_ASSERT (splt != NULL && sdyn != NULL);
2387
2388 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2389 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2390 for (; dyncon < dynconend; dyncon++)
2391 {
2392 Elf_Internal_Dyn dyn;
2393 asection *s;
2394
2395 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2396
2397 switch (dyn.d_tag)
2398 {
2399 default:
2400 break;
2401
2402 case DT_PLTGOT:
2403 s = bfd_get_section_by_name (output_bfd, ".got");
2404 BFD_ASSERT (s != NULL);
2405 dyn.d_un.d_ptr = s->vma;
2406 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2407 break;
2408
2409 case DT_JMPREL:
2410 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2411 if all symbols are found in the .got (not .got.plt). */
2412 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2413 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2414 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2415 break;
2416
2417 case DT_PLTRELSZ:
2418 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2419 if (s == NULL)
2420 dyn.d_un.d_val = 0;
2421 else
2422 dyn.d_un.d_val = s->size;
2423 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2424 break;
2425
2426 case DT_RELASZ:
2427 /* The procedure linkage table relocs (DT_JMPREL) should
2428 not be included in the overall relocs (DT_RELA).
2429 Therefore, we override the DT_RELASZ entry here to
2430 make it not include the JMPREL relocs. Since the
2431 linker script arranges for .rela.plt to follow all
2432 other relocation sections, we don't have to worry
2433 about changing the DT_RELA entry. */
2434 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2435 if (s != NULL)
2436 dyn.d_un.d_val -= s->size;
2437 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2438 break;
2439 }
2440 }
2441
2442 /* Fill in the first entry in the procedure linkage table. */
2443 if (splt->size > 0)
2444 {
2445 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2446 {
2447 if (info->shared)
2448 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2449 PLT_ENTRY_SIZE_V32);
2450 else
2451 {
2452 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2453 PLT_ENTRY_SIZE_V32);
2454 bfd_put_32 (output_bfd,
2455 sgot->output_section->vma
2456 + sgot->output_offset + 4,
2457 splt->contents + 4);
2458
2459 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2460 = PLT_ENTRY_SIZE_V32;
2461 }
2462 }
2463 else
2464 {
2465 if (info->shared)
2466 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2467 PLT_ENTRY_SIZE);
2468 else
2469 {
2470 memcpy (splt->contents, elf_cris_plt0_entry,
2471 PLT_ENTRY_SIZE);
2472 bfd_put_32 (output_bfd,
2473 sgot->output_section->vma
2474 + sgot->output_offset + 4,
2475 splt->contents + 6);
2476 bfd_put_32 (output_bfd,
2477 sgot->output_section->vma
2478 + sgot->output_offset + 8,
2479 splt->contents + 14);
2480
2481 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2482 = PLT_ENTRY_SIZE;
2483 }
2484 }
2485 }
2486 }
2487
2488 /* Fill in the first three entries in the global offset table. */
2489 if (sgot->size > 0)
2490 {
2491 if (sdyn == NULL)
2492 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2493 else
2494 bfd_put_32 (output_bfd,
2495 sdyn->output_section->vma + sdyn->output_offset,
2496 sgot->contents);
2497 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2498 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2499 }
2500
2501 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2502
2503 return TRUE;
2504 }
2505 \f
2506 /* Return the section that should be marked against GC for a given
2507 relocation. */
2508
2509 static asection *
2510 cris_elf_gc_mark_hook (asection *sec,
2511 struct bfd_link_info *info,
2512 Elf_Internal_Rela *rel,
2513 struct elf_link_hash_entry *h,
2514 Elf_Internal_Sym *sym)
2515 {
2516 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2517 if (h != NULL)
2518 switch (r_type)
2519 {
2520 case R_CRIS_GNU_VTINHERIT:
2521 case R_CRIS_GNU_VTENTRY:
2522 return NULL;
2523
2524 default:
2525 break;
2526 }
2527
2528 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2529 }
2530
2531 /* Update the got entry reference counts for the section being removed. */
2532
2533 static bfd_boolean
2534 cris_elf_gc_sweep_hook (bfd *abfd,
2535 struct bfd_link_info *info,
2536 asection *sec,
2537 const Elf_Internal_Rela *relocs)
2538 {
2539 struct elf_cris_link_hash_table * htab;
2540 Elf_Internal_Shdr *symtab_hdr;
2541 struct elf_link_hash_entry **sym_hashes;
2542 bfd_signed_vma *local_got_refcounts;
2543 const Elf_Internal_Rela *rel, *relend;
2544 bfd *dynobj;
2545 asection *sgot;
2546 asection *srelgot;
2547
2548 if (info->relocatable)
2549 return TRUE;
2550
2551 dynobj = elf_hash_table (info)->dynobj;
2552 if (dynobj == NULL)
2553 return TRUE;
2554
2555 htab = elf_cris_hash_table (info);
2556 if (htab == NULL)
2557 return FALSE;
2558
2559 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2560 sym_hashes = elf_sym_hashes (abfd);
2561 local_got_refcounts = elf_local_got_refcounts (abfd);
2562
2563 sgot = bfd_get_section_by_name (dynobj, ".got");
2564 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2565
2566 relend = relocs + sec->reloc_count;
2567 for (rel = relocs; rel < relend; rel++)
2568 {
2569 unsigned long r_symndx;
2570 struct elf_link_hash_entry *h = NULL;
2571 bfd_signed_vma got_element_size = 4;
2572 bfd_signed_vma *specific_refcount = NULL;
2573 enum elf_cris_reloc_type r_type;
2574
2575 r_symndx = ELF32_R_SYM (rel->r_info);
2576 if (r_symndx >= symtab_hdr->sh_info)
2577 {
2578 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2579 while (h->root.type == bfd_link_hash_indirect
2580 || h->root.type == bfd_link_hash_warning)
2581 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2582 }
2583
2584 r_type = ELF32_R_TYPE (rel->r_info);
2585 switch (r_type)
2586 {
2587 case R_CRIS_32_GOT:
2588 case R_CRIS_16_GOT:
2589 case R_CRIS_16_GOTPLT:
2590 case R_CRIS_32_GOTPLT:
2591 specific_refcount = h != NULL
2592 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2593 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2594 break;
2595
2596 case R_CRIS_32_GD:
2597 case R_CRIS_32_GOT_GD:
2598 case R_CRIS_16_GOT_GD:
2599 got_element_size = 8;
2600 specific_refcount = h != NULL
2601 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2602 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2603 break;
2604
2605 case R_CRIS_32_IE:
2606 case R_CRIS_16_GOT_TPREL:
2607 case R_CRIS_32_GOT_TPREL:
2608 specific_refcount = h != NULL
2609 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2610 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2611 break;
2612
2613 default:
2614 break;
2615 }
2616
2617 switch (r_type)
2618 {
2619 case R_CRIS_32_IE:
2620 case R_CRIS_32_GD:
2621 case R_CRIS_16_GOT_TPREL:
2622 case R_CRIS_32_GOT_TPREL:
2623 case R_CRIS_32_GOT_GD:
2624 case R_CRIS_16_GOT_GD:
2625 case R_CRIS_16_GOT:
2626 case R_CRIS_32_GOT:
2627 if (h != NULL)
2628 {
2629 /* If the counters are 0 when we got here, we've
2630 miscounted somehow somewhere, an internal error. */
2631 BFD_ASSERT (h->got.refcount > 0);
2632 --h->got.refcount;
2633
2634 BFD_ASSERT (*specific_refcount > 0);
2635 --*specific_refcount;
2636 if (*specific_refcount == 0)
2637 {
2638 /* We don't need the .got entry any more. */
2639 sgot->size -= got_element_size;
2640 srelgot->size -= sizeof (Elf32_External_Rela);
2641 }
2642 break;
2643 }
2644
2645 local_got_reloc:
2646 if (local_got_refcounts != NULL)
2647 {
2648 /* If the counters are 0 when we got here, we've
2649 miscounted somehow somewhere, an internal error. */
2650 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2651 --local_got_refcounts[r_symndx];
2652
2653 BFD_ASSERT (*specific_refcount > 0);
2654 --*specific_refcount;
2655 if (*specific_refcount == 0)
2656 {
2657 /* We don't need the .got entry any more. */
2658 sgot->size -= got_element_size;
2659 if (info->shared)
2660 srelgot->size -= sizeof (Elf32_External_Rela);
2661 }
2662 }
2663 break;
2664
2665 case R_CRIS_16_GOTPLT:
2666 case R_CRIS_32_GOTPLT:
2667 /* For local symbols, treat these like GOT relocs. */
2668 if (h == NULL)
2669 goto local_got_reloc;
2670 else
2671 /* For global symbols, adjust the reloc-specific refcount. */
2672 elf_cris_hash_entry (h)->gotplt_refcount--;
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:
2682 case R_CRIS_16:
2683 case R_CRIS_32:
2684 case R_CRIS_8_PCREL:
2685 case R_CRIS_16_PCREL:
2686 case R_CRIS_32_PCREL:
2687 case R_CRIS_32_PLT_PCREL:
2688 /* Negate the increment we did in cris_elf_check_relocs. */
2689 if (h != NULL)
2690 {
2691 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2692 && h->plt.refcount > 0)
2693 --h->plt.refcount;
2694 }
2695 break;
2696
2697 case R_CRIS_32_DTPREL:
2698 /* This'd be a .dtpreld entry in e.g. debug info. */
2699 if ((sec->flags & SEC_ALLOC) == 0)
2700 break;
2701 /* Fall through. */
2702 case R_CRIS_16_DTPREL:
2703 htab->dtpmod_refcount--;
2704 if (htab->dtpmod_refcount == 0)
2705 htab->next_gotplt_entry -= 8;
2706 BFD_ASSERT (local_got_refcounts != NULL);
2707 local_got_refcounts[-1]--;
2708 break;
2709
2710 default:
2711 break;
2712 }
2713 }
2714
2715 return TRUE;
2716 }
2717
2718 /* The elf_backend_plt_sym_val hook function. */
2719
2720 static bfd_vma
2721 cris_elf_plt_sym_val (bfd_vma i, const asection *plt,
2722 const arelent *rel ATTRIBUTE_UNUSED)
2723 {
2724 bfd_size_type plt_entry_size;
2725
2726 plt_entry_size
2727 = (bfd_get_mach (plt->owner) == bfd_mach_cris_v32
2728 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2729
2730 return plt->vma + (i + 1) * plt_entry_size;
2731 }
2732
2733 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2734 entry but we found we will not create any. Called when we find we will
2735 not have any PLT for this symbol, by for example
2736 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2737 or elf_cris_size_dynamic_sections if no dynamic sections will be
2738 created (we're only linking static objects). */
2739
2740 static bfd_boolean
2741 elf_cris_adjust_gotplt_to_got (h, p)
2742 struct elf_cris_link_hash_entry *h;
2743 PTR p;
2744 {
2745 struct bfd_link_info *info = (struct bfd_link_info *) p;
2746
2747 /* A GOTPLT reloc, when activated, is supposed to be included into
2748 the PLT refcount. */
2749 BFD_ASSERT (h->gotplt_refcount == 0
2750 || h->gotplt_refcount <= h->root.plt.refcount);
2751
2752 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2753 if (h->gotplt_refcount <= 0)
2754 return TRUE;
2755
2756 if (h->reg_got_refcount > 0)
2757 {
2758 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2759 Probably not necessary at this stage, but keeping them accurate
2760 helps avoiding surprises later. */
2761 h->root.got.refcount += h->gotplt_refcount;
2762 h->reg_got_refcount += h->gotplt_refcount;
2763 h->gotplt_refcount = 0;
2764 }
2765 else
2766 {
2767 /* No GOT entry for this symbol. We need to create one. */
2768 bfd *dynobj = elf_hash_table (info)->dynobj;
2769 asection *sgot;
2770 asection *srelgot;
2771
2772 BFD_ASSERT (dynobj != NULL);
2773 sgot = bfd_get_section_by_name (dynobj, ".got");
2774 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2775
2776 /* Put accurate refcounts there. */
2777 h->root.got.refcount += h->gotplt_refcount;
2778 h->reg_got_refcount = h->gotplt_refcount;
2779
2780 h->gotplt_refcount = 0;
2781
2782 /* We always have a .got and a .rela.got section if there were
2783 GOTPLT relocs in input. */
2784 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2785
2786 /* Allocate space in the .got section. */
2787 sgot->size += 4;
2788
2789 /* Allocate relocation space. */
2790 srelgot->size += sizeof (Elf32_External_Rela);
2791 }
2792
2793 return TRUE;
2794 }
2795
2796 /* Try to fold PLT entries with GOT entries. There are two cases when we
2797 want to do this:
2798
2799 - When all PLT references are GOTPLT references, and there are GOT
2800 references, and this is not the executable. We don't have to
2801 generate a PLT at all.
2802
2803 - When there are both (ordinary) PLT references and GOT references,
2804 and this isn't the executable.
2805 We want to make the PLT reference use the ordinary GOT entry rather
2806 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2807 since the GOT entry will have to be resolved at startup anyway.
2808
2809 Though the latter case is handled when room for the PLT is allocated,
2810 not here.
2811
2812 By folding into the GOT, we may need a round-trip to a PLT in the
2813 executable for calls, a loss in performance. Still, losing a
2814 reloc is a win in size and at least in start-up time.
2815
2816 Note that this function is called before symbols are forced local by
2817 version scripts. The differing cases are handled by
2818 elf_cris_hide_symbol. */
2819
2820 static bfd_boolean
2821 elf_cris_try_fold_plt_to_got (h, p)
2822 struct elf_cris_link_hash_entry *h;
2823 PTR p;
2824 {
2825 struct bfd_link_info *info = (struct bfd_link_info *) p;
2826
2827 /* If there are no GOT references for this symbol, we can't fold any
2828 other reference so there's nothing to do. Likewise if there are no
2829 PLT references; GOTPLT references included. */
2830 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2831 return TRUE;
2832
2833 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2834 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2835
2836 if (h->gotplt_refcount == h->root.plt.refcount)
2837 {
2838 /* The only PLT references are GOTPLT references, and there are GOT
2839 references. Convert PLT to GOT references. */
2840 if (! elf_cris_adjust_gotplt_to_got (h, info))
2841 return FALSE;
2842
2843 /* Clear the PLT references, so no PLT will be created. */
2844 h->root.plt.offset = (bfd_vma) -1;
2845 }
2846
2847 return TRUE;
2848 }
2849
2850 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2851 to use a GOT entry (and create one) rather than requiring a GOTPLT
2852 entry. */
2853
2854 static void
2855 elf_cris_hide_symbol (info, h, force_local)
2856 struct bfd_link_info *info;
2857 struct elf_link_hash_entry *h;
2858 bfd_boolean force_local;
2859 {
2860 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2861
2862 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2863 }
2864
2865 /* Adjust a symbol defined by a dynamic object and referenced by a
2866 regular object. The current definition is in some section of the
2867 dynamic object, but we're not including those sections. We have to
2868 change the definition to something the rest of the link can
2869 understand. */
2870
2871 static bfd_boolean
2872 elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info,
2873 struct elf_link_hash_entry *h)
2874 {
2875 struct elf_cris_link_hash_table * htab;
2876 bfd *dynobj;
2877 asection *s;
2878 bfd_size_type plt_entry_size;
2879
2880 htab = elf_cris_hash_table (info);
2881 if (htab == NULL)
2882 return FALSE;
2883
2884 dynobj = elf_hash_table (info)->dynobj;
2885
2886 /* Make sure we know what is going on here. */
2887 BFD_ASSERT (dynobj != NULL
2888 && (h->needs_plt
2889 || h->u.weakdef != NULL
2890 || (h->def_dynamic
2891 && h->ref_regular
2892 && !h->def_regular)));
2893
2894 plt_entry_size
2895 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2896 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2897
2898 /* If this is a function, put it in the procedure linkage table. We
2899 will fill in the contents of the procedure linkage table later,
2900 when we know the address of the .got section. */
2901 if (h->type == STT_FUNC
2902 || h->needs_plt)
2903 {
2904 /* If we link a program (not a DSO), we'll get rid of unnecessary
2905 PLT entries; we point to the actual symbols -- even for pic
2906 relocs, because a program built with -fpic should have the same
2907 result as one built without -fpic, specifically considering weak
2908 symbols.
2909 FIXME: m68k and i386 differ here, for unclear reasons. */
2910 if (! info->shared
2911 && !h->def_dynamic)
2912 {
2913 /* This case can occur if we saw a PLT reloc in an input file,
2914 but the symbol was not defined by a dynamic object. In such
2915 a case, we don't actually need to build a procedure linkage
2916 table, and we can just do an absolute or PC reloc instead, or
2917 change a .got.plt index to a .got index for GOTPLT relocs. */
2918 BFD_ASSERT (h->needs_plt);
2919 h->needs_plt = 0;
2920 h->plt.offset = (bfd_vma) -1;
2921 return
2922 elf_cris_adjust_gotplt_to_got ((struct
2923 elf_cris_link_hash_entry *) h,
2924 info);
2925 }
2926
2927 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2928 where a pointer-equivalent symbol was unimportant (i.e. more
2929 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2930 of the PLT. We can't for the executable, because the GOT
2931 entries will point to the PLT there (and be constant). */
2932 if (info->shared
2933 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2934 h, info))
2935 return FALSE;
2936
2937 /* GC or folding may have rendered this entry unused. */
2938 if (h->plt.refcount <= 0)
2939 {
2940 h->needs_plt = 0;
2941 h->plt.offset = (bfd_vma) -1;
2942 return TRUE;
2943 }
2944
2945 /* Make sure this symbol is output as a dynamic symbol. */
2946 if (h->dynindx == -1)
2947 {
2948 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2949 return FALSE;
2950 }
2951
2952 s = bfd_get_section_by_name (dynobj, ".plt");
2953 BFD_ASSERT (s != NULL);
2954
2955 /* If this is the first .plt entry, make room for the special
2956 first entry. */
2957 if (s->size == 0)
2958 s->size += plt_entry_size;
2959
2960 /* If this symbol is not defined in a regular file, and we are
2961 not generating a shared library, then set the symbol to this
2962 location in the .plt. */
2963 if (!info->shared
2964 && !h->def_regular)
2965 {
2966 h->root.u.def.section = s;
2967 h->root.u.def.value = s->size;
2968 }
2969
2970 /* If there's already a GOT entry, use that, not a .got.plt. A
2971 GOT field still has a reference count when we get here; it's
2972 not yet changed to an offset. We can't do this for an
2973 executable, because then the reloc associated with the PLT
2974 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2975 this to elf_cris_try_fold_plt_to_got. */
2976 if (info->shared && h->got.refcount > 0)
2977 {
2978 h->got.refcount += h->plt.refcount;
2979
2980 /* Mark the PLT offset to use the GOT entry by setting the low
2981 bit in the plt offset; it is always a multiple of
2982 plt_entry_size (which is at least a multiple of 2). */
2983 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2984
2985 /* Change the PLT refcount to an offset. */
2986 h->plt.offset = s->size;
2987
2988 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2989 that the got entry should be used instead. */
2990 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2991 h)->gotplt_offset == 0);
2992
2993 /* Make room for this entry. */
2994 s->size += plt_entry_size;
2995
2996 return TRUE;
2997 }
2998
2999 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
3000 h->plt.offset = s->size;
3001
3002 /* Make room for this entry. */
3003 s->size += plt_entry_size;
3004
3005 /* We also need to make an entry in the .got.plt section, which
3006 will be placed in the .got section by the linker script. */
3007 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
3008 = htab->next_gotplt_entry;
3009 htab->next_gotplt_entry += 4;
3010
3011 s = bfd_get_section_by_name (dynobj, ".got.plt");
3012 BFD_ASSERT (s != NULL);
3013 s->size += 4;
3014
3015 /* We also need to make an entry in the .rela.plt section. */
3016
3017 s = bfd_get_section_by_name (dynobj, ".rela.plt");
3018 BFD_ASSERT (s != NULL);
3019 s->size += sizeof (Elf32_External_Rela);
3020
3021 return TRUE;
3022 }
3023
3024 /* Reinitialize the plt offset now that it is not used as a reference
3025 count any more. */
3026 h->plt.offset = (bfd_vma) -1;
3027
3028 /* If this is a weak symbol, and there is a real definition, the
3029 processor independent code will have arranged for us to see the
3030 real definition first, and we can just use the same value. */
3031 if (h->u.weakdef != NULL)
3032 {
3033 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3034 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3035 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3036 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3037 return TRUE;
3038 }
3039
3040 /* This is a reference to a symbol defined by a dynamic object which
3041 is not a function. */
3042
3043 /* If we are creating a shared library, we must presume that the
3044 only references to the symbol are via the global offset table.
3045 For such cases we need not do anything here; the relocations will
3046 be handled correctly by relocate_section. */
3047 if (info->shared)
3048 return TRUE;
3049
3050 /* If there are no references to this symbol that do not use the
3051 GOT, we don't need to generate a copy reloc. */
3052 if (!h->non_got_ref)
3053 return TRUE;
3054
3055 /* We must allocate the symbol in our .dynbss section, which will
3056 become part of the .bss section of the executable. There will be
3057 an entry for this symbol in the .dynsym section. The dynamic
3058 object will contain position independent code, so all references
3059 from the dynamic object to this symbol will go through the global
3060 offset table. The dynamic linker will use the .dynsym entry to
3061 determine the address it must put in the global offset table, so
3062 both the dynamic object and the regular object will refer to the
3063 same memory location for the variable. */
3064
3065 s = bfd_get_section_by_name (dynobj, ".dynbss");
3066 BFD_ASSERT (s != NULL);
3067
3068 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3069 copy the initial value out of the dynamic object and into the
3070 runtime process image. We need to remember the offset into the
3071 .rela.bss section we are going to use. */
3072 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
3073 {
3074 asection *srel;
3075
3076 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3077 BFD_ASSERT (srel != NULL);
3078 srel->size += sizeof (Elf32_External_Rela);
3079 h->needs_copy = 1;
3080 }
3081
3082 return _bfd_elf_adjust_dynamic_copy (h, s);
3083 }
3084
3085 /* Adjust our "subclass" elements for an indirect symbol. */
3086
3087 static void
3088 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3089 struct elf_link_hash_entry *dir,
3090 struct elf_link_hash_entry *ind)
3091 {
3092 struct elf_cris_link_hash_entry *edir, *eind;
3093
3094 edir = (struct elf_cris_link_hash_entry *) dir;
3095 eind = (struct elf_cris_link_hash_entry *) ind;
3096
3097 /* Only indirect symbols are replaced; we're not interested in
3098 updating any of EIND's fields for other symbols. */
3099 if (eind->root.root.type != bfd_link_hash_indirect)
3100 {
3101 /* Still, we need to copy flags for e.g. weak definitions. */
3102 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3103 return;
3104 }
3105
3106 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3107
3108 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3109 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3110 if (eind->pcrel_relocs_copied != NULL)
3111 {
3112 if (edir->pcrel_relocs_copied != NULL)
3113 {
3114 struct elf_cris_pcrel_relocs_copied **pp;
3115 struct elf_cris_pcrel_relocs_copied *p;
3116
3117 /* Add reloc counts against the indirect sym to the direct sym
3118 list. Merge any entries against the same section. */
3119 for (pp = &eind->pcrel_relocs_copied; *pp != NULL;)
3120 {
3121 struct elf_cris_pcrel_relocs_copied *q;
3122 p = *pp;
3123 for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next)
3124 if (q->section == p->section)
3125 {
3126 q->count += p->count;
3127 *pp = p->next;
3128 break;
3129 }
3130 if (q == NULL)
3131 pp = &p->next;
3132 }
3133 *pp = edir->pcrel_relocs_copied;
3134 }
3135 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3136 }
3137 XMOVE (gotplt_refcount);
3138 XMOVE (gotplt_offset);
3139 XMOVE (reg_got_refcount);
3140 XMOVE (tprel_refcount);
3141 XMOVE (dtp_refcount);
3142 #undef XMOVE
3143 #undef XMOVOPZ
3144
3145 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3146 }
3147
3148 /* Look through the relocs for a section during the first phase. */
3149
3150 static bfd_boolean
3151 cris_elf_check_relocs (bfd *abfd,
3152 struct bfd_link_info *info,
3153 asection *sec,
3154 const Elf_Internal_Rela *relocs)
3155 {
3156 struct elf_cris_link_hash_table * htab;
3157 bfd *dynobj;
3158 Elf_Internal_Shdr *symtab_hdr;
3159 struct elf_link_hash_entry **sym_hashes;
3160 bfd_signed_vma *local_got_refcounts;
3161 const Elf_Internal_Rela *rel;
3162 const Elf_Internal_Rela *rel_end;
3163 asection *sgot;
3164 asection *srelgot;
3165 asection *sreloc;
3166
3167 if (info->relocatable)
3168 return TRUE;
3169
3170 htab = elf_cris_hash_table (info);
3171 if (htab == NULL)
3172 return FALSE;
3173
3174 dynobj = elf_hash_table (info)->dynobj;
3175 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3176 sym_hashes = elf_sym_hashes (abfd);
3177 local_got_refcounts = elf_local_got_refcounts (abfd);
3178
3179 sgot = NULL;
3180 srelgot = NULL;
3181 sreloc = NULL;
3182
3183 rel_end = relocs + sec->reloc_count;
3184 for (rel = relocs; rel < rel_end; rel++)
3185 {
3186 struct elf_link_hash_entry *h;
3187 unsigned long r_symndx;
3188 enum elf_cris_reloc_type r_type;
3189 bfd_signed_vma got_element_size = 4;
3190 unsigned long r_symndx_lgot = INT_MAX;
3191
3192 r_symndx = ELF32_R_SYM (rel->r_info);
3193 if (r_symndx < symtab_hdr->sh_info)
3194 {
3195 h = NULL;
3196 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3197 }
3198 else
3199 {
3200 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3201 while (h->root.type == bfd_link_hash_indirect
3202 || h->root.type == bfd_link_hash_warning)
3203 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3204 }
3205
3206 r_type = ELF32_R_TYPE (rel->r_info);
3207
3208 /* Some relocs require linker-created sections; we need to hang them
3209 on the first input bfd we found that contained dynamic relocs. */
3210 switch (r_type)
3211 {
3212 case R_CRIS_32_DTPREL:
3213 if ((sec->flags & SEC_ALLOC) == 0)
3214 /* This'd be a .dtpreld entry in e.g. debug info. We have
3215 several different switch statements below, but none of
3216 that is needed; we need no preparations for resolving
3217 R_CRIS_32_DTPREL into a non-allocated section (debug
3218 info), so let's just move on to the next
3219 relocation. */
3220 continue;
3221 /* Fall through. */
3222 case R_CRIS_16_DTPREL:
3223 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3224 entry at index 3. */
3225 if (htab->dtpmod_refcount == 0)
3226 htab->next_gotplt_entry += 8;
3227
3228 htab->dtpmod_refcount++;
3229 /* Fall through. */
3230
3231 case R_CRIS_32_IE:
3232 case R_CRIS_32_GD:
3233 case R_CRIS_16_GOT_GD:
3234 case R_CRIS_32_GOT_GD:
3235 case R_CRIS_32_GOT_TPREL:
3236 case R_CRIS_16_GOT_TPREL:
3237 case R_CRIS_16_GOT:
3238 case R_CRIS_32_GOT:
3239 case R_CRIS_32_GOTREL:
3240 case R_CRIS_32_PLT_GOTREL:
3241 case R_CRIS_32_PLT_PCREL:
3242 case R_CRIS_16_GOTPLT:
3243 case R_CRIS_32_GOTPLT:
3244 if (dynobj == NULL)
3245 {
3246 elf_hash_table (info)->dynobj = dynobj = abfd;
3247
3248 /* We could handle this if we can get a handle on the
3249 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3250 that, we must insist on dynobj being a specific mach. */
3251 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3252 {
3253 (*_bfd_error_handler)
3254 (_("%B, section %A:\n v10/v32 compatible object %s"
3255 " must not contain a PIC relocation"),
3256 abfd, sec);
3257 return FALSE;
3258 }
3259
3260 /* Create the .got section, so we can assume it's always
3261 present whenever there's a dynobj. */
3262 if (!_bfd_elf_create_got_section (dynobj, info))
3263 return FALSE;
3264 }
3265
3266 if (sgot == NULL)
3267 sgot = bfd_get_section_by_name (dynobj, ".got");
3268
3269 if (local_got_refcounts == NULL)
3270 {
3271 bfd_size_type amt;
3272
3273 /* We use index local_got_refcounts[-1] to count all
3274 GOT-relative relocations that do not have explicit
3275 GOT entries. */
3276 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3277 amt *= sizeof (bfd_signed_vma);
3278 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3279 if (local_got_refcounts == NULL)
3280 return FALSE;
3281
3282 local_got_refcounts++;
3283 elf_local_got_refcounts (abfd) = local_got_refcounts;
3284 }
3285 break;
3286
3287 default:
3288 break;
3289 }
3290
3291 /* Some relocs require a global offset table (but perhaps not a
3292 specific GOT entry). */
3293 switch (r_type)
3294 {
3295 case R_CRIS_16_DTPREL:
3296 case R_CRIS_32_DTPREL:
3297 /* Not requesting .got.rela for an executable: the contents
3298 of the first entry is constant there. For a shared
3299 library, we need .got.rela for the R_CRIS_DTPMOD
3300 relocation at index 3. */
3301 if (!info->shared)
3302 break;
3303 /* Fall through. */
3304
3305 case R_CRIS_32_IE:
3306 case R_CRIS_32_GD:
3307 case R_CRIS_16_GOT_GD:
3308 case R_CRIS_32_GOT_GD:
3309 case R_CRIS_32_GOT_TPREL:
3310 case R_CRIS_16_GOT_TPREL:
3311 /* Fall through. */
3312
3313 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3314 entry only for local symbols. Unfortunately, we don't know
3315 until later on if there's a version script that forces the
3316 symbol local. We must have the .rela.got section in place
3317 before we know if the symbol looks global now, so we need
3318 to treat the reloc just like for R_CRIS_16_GOT and
3319 R_CRIS_32_GOT. */
3320 case R_CRIS_16_GOTPLT:
3321 case R_CRIS_32_GOTPLT:
3322 case R_CRIS_16_GOT:
3323 case R_CRIS_32_GOT:
3324 if (srelgot == NULL
3325 && (h != NULL || info->shared))
3326 {
3327 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3328 if (srelgot == NULL)
3329 {
3330 srelgot = bfd_make_section_with_flags (dynobj,
3331 ".rela.got",
3332 (SEC_ALLOC
3333 | SEC_LOAD
3334 | SEC_HAS_CONTENTS
3335 | SEC_IN_MEMORY
3336 | SEC_LINKER_CREATED
3337 | SEC_READONLY));
3338 if (srelgot == NULL
3339 || !bfd_set_section_alignment (dynobj, srelgot, 2))
3340 return FALSE;
3341 }
3342 }
3343 break;
3344
3345 default:
3346 break;
3347 }
3348
3349 /* Warn and error for invalid input. */
3350 switch (r_type)
3351 {
3352 case R_CRIS_32_IE:
3353 case R_CRIS_32_TPREL:
3354 case R_CRIS_16_TPREL:
3355 case R_CRIS_32_GD:
3356 if (info->shared)
3357 {
3358 (*_bfd_error_handler)
3359 (_("%B, section %A:\n relocation %s not valid"
3360 " in a shared object;"
3361 " typically an option mixup, recompile with -fPIC"),
3362 abfd,
3363 sec,
3364 cris_elf_howto_table[r_type].name);
3365 /* Don't return FALSE here; we want messages for all of
3366 these and the error behavior is ungraceful
3367 anyway. */
3368 }
3369 default:
3370 break;
3371 }
3372
3373 switch (r_type)
3374 {
3375 case R_CRIS_32_GD:
3376 case R_CRIS_16_GOT_GD:
3377 case R_CRIS_32_GOT_GD:
3378 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3379 got_element_size = 8;
3380 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3381 break;
3382
3383 case R_CRIS_16_DTPREL:
3384 case R_CRIS_32_DTPREL:
3385 /* These two just request for the constant-index
3386 module-local tls_index-sized GOT entry, which we add
3387 elsewhere. */
3388 break;
3389
3390 case R_CRIS_32_IE:
3391 case R_CRIS_32_GOT_TPREL:
3392 case R_CRIS_16_GOT_TPREL:
3393 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3394
3395 /* Those relocs also require that a DSO is of type
3396 Initial Exec. Like other targets, we don't reset this
3397 flag even if the relocs are GC:ed away. */
3398 if (info->shared)
3399 info->flags |= DF_STATIC_TLS;
3400 break;
3401
3402 /* Let's list the other assembler-generated TLS-relocs too,
3403 just to show that they're not forgotten. */
3404 case R_CRIS_16_TPREL:
3405 case R_CRIS_32_TPREL:
3406 default:
3407 break;
3408 }
3409
3410 switch (r_type)
3411 {
3412 case R_CRIS_16_GOTPLT:
3413 case R_CRIS_32_GOTPLT:
3414 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3415 entry) is eliminated. We can only do this for a non-local
3416 symbol. */
3417 if (h != NULL)
3418 {
3419 elf_cris_hash_entry (h)->gotplt_refcount++;
3420 goto handle_gotplt_reloc;
3421 }
3422 /* If h is NULL then this is a local symbol, and we must make a
3423 GOT entry for it, so handle it like a GOT reloc. */
3424 /* Fall through. */
3425
3426 case R_CRIS_32_IE:
3427 case R_CRIS_32_GD:
3428 case R_CRIS_16_GOT_GD:
3429 case R_CRIS_32_GOT_GD:
3430 case R_CRIS_32_GOT_TPREL:
3431 case R_CRIS_16_GOT_TPREL:
3432 case R_CRIS_16_GOT:
3433 case R_CRIS_32_GOT:
3434 /* This symbol requires a global offset table entry. */
3435 if (h != NULL)
3436 {
3437 if (h->got.refcount == 0)
3438 {
3439 /* Make sure this symbol is output as a dynamic symbol. */
3440 if (h->dynindx == -1)
3441 {
3442 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3443 return FALSE;
3444 }
3445 }
3446
3447 /* Update the sum of reloc counts for this symbol. */
3448 h->got.refcount++;
3449
3450 switch (r_type)
3451 {
3452 case R_CRIS_16_GOT:
3453 case R_CRIS_32_GOT:
3454 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3455 {
3456 /* Allocate space in the .got section. */
3457 sgot->size += got_element_size;
3458 /* Allocate relocation space. */
3459 srelgot->size += sizeof (Elf32_External_Rela);
3460 }
3461 elf_cris_hash_entry (h)->reg_got_refcount++;
3462 break;
3463
3464 case R_CRIS_32_GD:
3465 case R_CRIS_16_GOT_GD:
3466 case R_CRIS_32_GOT_GD:
3467 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3468 {
3469 /* Allocate space in the .got section. */
3470 sgot->size += got_element_size;
3471 /* Allocate relocation space. */
3472 srelgot->size += sizeof (Elf32_External_Rela);
3473 }
3474 elf_cris_hash_entry (h)->dtp_refcount++;
3475 break;
3476
3477 case R_CRIS_32_IE:
3478 case R_CRIS_32_GOT_TPREL:
3479 case R_CRIS_16_GOT_TPREL:
3480 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3481 {
3482 /* Allocate space in the .got section. */
3483 sgot->size += got_element_size;
3484 /* Allocate relocation space. */
3485 srelgot->size += sizeof (Elf32_External_Rela);
3486 }
3487 elf_cris_hash_entry (h)->tprel_refcount++;
3488 break;
3489
3490 default:
3491 BFD_FAIL ();
3492 break;
3493 }
3494 }
3495 else
3496 {
3497 /* This is a global offset table entry for a local symbol. */
3498 if (local_got_refcounts[r_symndx_lgot] == 0)
3499 {
3500 sgot->size += got_element_size;
3501 if (info->shared)
3502 {
3503 /* If we are generating a shared object, we need
3504 to output a R_CRIS_RELATIVE reloc so that the
3505 dynamic linker can adjust this GOT entry.
3506 Similarly for non-regular got entries. */
3507 srelgot->size += sizeof (Elf32_External_Rela);
3508 }
3509 }
3510 /* Update the reloc-specific count. */
3511 local_got_refcounts[r_symndx_lgot]++;
3512
3513 /* This one is the sum of all the others. */
3514 local_got_refcounts[r_symndx]++;
3515 }
3516 break;
3517
3518 case R_CRIS_16_DTPREL:
3519 case R_CRIS_32_DTPREL:
3520 case R_CRIS_32_GOTREL:
3521 /* This reference requires a global offset table.
3522 FIXME: The actual refcount isn't used currently; the .got
3523 section can't be removed if there were any references in the
3524 input. */
3525 local_got_refcounts[-1]++;
3526 break;
3527
3528 handle_gotplt_reloc:
3529
3530 case R_CRIS_32_PLT_GOTREL:
3531 /* This reference requires a global offset table. */
3532 local_got_refcounts[-1]++;
3533 /* Fall through. */
3534
3535 case R_CRIS_32_PLT_PCREL:
3536 /* This symbol requires a procedure linkage table entry. We
3537 actually build the entry in adjust_dynamic_symbol,
3538 because this might be a case of linking PIC code which is
3539 never referenced by a dynamic object, in which case we
3540 don't need to generate a procedure linkage table entry
3541 after all. */
3542
3543 /* Beware: if we'd check for visibility of the symbol here
3544 (and not marking the need for a PLT when non-visible), we'd
3545 get into trouble with keeping handling consistent with
3546 regards to relocs found before definition and GOTPLT
3547 handling. Eliminable PLT entries will be dealt with later
3548 anyway. */
3549 if (h == NULL)
3550 continue;
3551
3552 h->needs_plt = 1;
3553 h->plt.refcount++;
3554 break;
3555
3556 case R_CRIS_8:
3557 case R_CRIS_16:
3558 case R_CRIS_32:
3559 /* Let's help debug shared library creation. Any of these
3560 relocs *can* be used in shared libs, but pages containing
3561 them cannot be shared, so they're not appropriate for
3562 common use. Don't warn for sections we don't care about,
3563 such as debug sections or non-constant sections. We
3564 can't help tables of (global) function pointers, for
3565 example, though they must be emitted in a (writable) data
3566 section to avoid having impure text sections. */
3567 if (info->shared
3568 && (sec->flags & SEC_ALLOC) != 0
3569 && (sec->flags & SEC_READONLY) != 0)
3570 {
3571 /* FIXME: How do we make this optionally a warning only? */
3572 (*_bfd_error_handler)
3573 (_("%B, section %A:\n relocation %s should not"
3574 " be used in a shared object; recompile with -fPIC"),
3575 abfd,
3576 sec,
3577 cris_elf_howto_table[r_type].name);
3578 }
3579
3580 /* We don't need to handle relocs into sections not going into
3581 the "real" output. */
3582 if ((sec->flags & SEC_ALLOC) == 0)
3583 break;
3584
3585 if (h != NULL)
3586 {
3587 h->non_got_ref = 1;
3588
3589 /* Make sure a plt entry is created for this symbol if it
3590 turns out to be a function defined by a dynamic object. */
3591 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3592 h->plt.refcount++;
3593 }
3594
3595 /* If we are creating a shared library and this is not a local
3596 symbol, we need to copy the reloc into the shared library.
3597 However when linking with -Bsymbolic and this is a global
3598 symbol which is defined in an object we are including in the
3599 link (i.e., DEF_REGULAR is set), then we can resolve the
3600 reloc directly. At this point we have not seen all the input
3601 files, so it is possible that DEF_REGULAR is not set now but
3602 will be set later (it is never cleared). In case of a weak
3603 definition, DEF_REGULAR may be cleared later by a strong
3604 definition in a shared library. We account for that
3605 possibility below by storing information in the relocs_copied
3606 field of the hash table entry. A similar situation occurs
3607 when creating shared libraries and symbol visibility changes
3608 render the symbol local. */
3609
3610 /* No need to do anything if we're not creating a shared object. */
3611 if (! info->shared)
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 a symbol has been forced local or we have found a regular
3967 definition for the symbolic link case, then we won't be needing
3968 any relocs. */
3969 if (h->root.def_regular
3970 && (h->root.forced_local
3971 || info->symbolic))
3972 {
3973 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3974 {
3975 asection *sreloc
3976 = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info)
3977 ->dynobj,
3978 s->section,
3979 /*rela?*/ TRUE);
3980 sreloc->size -= s->count * sizeof (Elf32_External_Rela);
3981 }
3982 return TRUE;
3983 }
3984
3985 /* If we have accounted for PC-relative relocs for read-only
3986 sections, now is the time to warn for them. We can't do it in
3987 cris_elf_check_relocs, because we don't know the status of all
3988 symbols at that time (and it's common to force symbols local
3989 late). */
3990
3991 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3992 if ((s->section->flags & SEC_READONLY) != 0)
3993 {
3994 /* FIXME: How do we make this optionally a warning only? */
3995 (*_bfd_error_handler)
3996 (_("%B, section `%A', to symbol `%s':\n"
3997 " relocation %s should not be used"
3998 " in a shared object; recompile with -fPIC"),
3999 s->section->owner,
4000 s->section,
4001 h->root.root.root.string,
4002 cris_elf_howto_table[s->r_type].name);
4003
4004 info->flags |= DF_TEXTREL;
4005 }
4006
4007 return TRUE;
4008 }
4009
4010 /* This function is called via elf_cris_link_hash_traverse if we are *not*
4011 creating a shared object. We discard space for relocs for symbols put
4012 in the .got, but which we found we do not have to resolve at run-time. */
4013
4014 static bfd_boolean
4015 elf_cris_discard_excess_program_dynamics (h, inf)
4016 struct elf_cris_link_hash_entry *h;
4017 PTR inf;
4018 {
4019 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4020
4021 /* If we're not creating a shared library and have a symbol which is
4022 referred to by .got references, but the symbol is defined locally,
4023 (or rather, not defined by a DSO) then lose the reloc for the .got
4024 (don't allocate room for it). Likewise for relocs for something
4025 for which we create a PLT. */
4026 if (!h->root.def_dynamic
4027 || h->root.plt.refcount > 0)
4028 {
4029 if (h->reg_got_refcount > 0
4030 /* The size of this section is only valid and in sync with the
4031 various reference counts if we do dynamic; don't decrement it
4032 otherwise. */
4033 && elf_hash_table (info)->dynamic_sections_created)
4034 {
4035 bfd *dynobj = elf_hash_table (info)->dynobj;
4036 asection *srelgot;
4037
4038 BFD_ASSERT (dynobj != NULL);
4039
4040 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4041
4042 BFD_ASSERT (srelgot != NULL);
4043
4044 srelgot->size -= sizeof (Elf32_External_Rela);
4045 }
4046
4047 /* If the locally-defined symbol isn't used by a DSO, then we don't
4048 have to export it as a dynamic symbol. This was already done for
4049 functions; doing this for all symbols would presumably not
4050 introduce new problems. Of course we don't do this if we're
4051 exporting all dynamic symbols. */
4052 if (! info->export_dynamic
4053 && h->root.dynindx != -1
4054 && !h->root.def_dynamic
4055 && !h->root.ref_dynamic)
4056 {
4057 h->root.dynindx = -1;
4058 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4059 h->root.dynstr_index);
4060 }
4061 }
4062
4063 return TRUE;
4064 }
4065
4066 /* Reject a file depending on presence and expectation of prefixed
4067 underscores on symbols. */
4068
4069 static bfd_boolean
4070 cris_elf_object_p (abfd)
4071 bfd *abfd;
4072 {
4073 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4074 return FALSE;
4075
4076 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4077 return (bfd_get_symbol_leading_char (abfd) == '_');
4078 else
4079 return (bfd_get_symbol_leading_char (abfd) == 0);
4080 }
4081
4082 /* Mark presence or absence of leading underscore. Set machine type
4083 flags from mach type. */
4084
4085 static void
4086 cris_elf_final_write_processing (abfd, linker)
4087 bfd *abfd;
4088 bfd_boolean linker ATTRIBUTE_UNUSED;
4089 {
4090 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4091
4092 e_flags &= ~EF_CRIS_UNDERSCORE;
4093 if (bfd_get_symbol_leading_char (abfd) == '_')
4094 e_flags |= EF_CRIS_UNDERSCORE;
4095
4096 switch (bfd_get_mach (abfd))
4097 {
4098 case bfd_mach_cris_v0_v10:
4099 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4100 break;
4101
4102 case bfd_mach_cris_v10_v32:
4103 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4104 break;
4105
4106 case bfd_mach_cris_v32:
4107 e_flags |= EF_CRIS_VARIANT_V32;
4108 break;
4109
4110 default:
4111 _bfd_abort (__FILE__, __LINE__,
4112 _("Unexpected machine number"));
4113 }
4114
4115 elf_elfheader (abfd)->e_flags = e_flags;
4116 }
4117
4118 /* Set the mach type from e_flags value. */
4119
4120 static bfd_boolean
4121 cris_elf_set_mach_from_flags (abfd, flags)
4122 bfd *abfd;
4123 unsigned long flags;
4124 {
4125 switch (flags & EF_CRIS_VARIANT_MASK)
4126 {
4127 case EF_CRIS_VARIANT_ANY_V0_V10:
4128 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4129 break;
4130
4131 case EF_CRIS_VARIANT_V32:
4132 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4133 break;
4134
4135 case EF_CRIS_VARIANT_COMMON_V10_V32:
4136 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4137 break;
4138
4139 default:
4140 /* Since we don't recognize them, we obviously can't support them
4141 with this code; we'd have to require that all future handling
4142 would be optional. */
4143 bfd_set_error (bfd_error_wrong_format);
4144 return FALSE;
4145 }
4146
4147 return TRUE;
4148 }
4149
4150 /* Display the flags field. */
4151
4152 static bfd_boolean
4153 cris_elf_print_private_bfd_data (abfd, ptr)
4154 bfd *abfd;
4155 PTR ptr;
4156 {
4157 FILE *file = (FILE *) ptr;
4158
4159 BFD_ASSERT (abfd != NULL && ptr != NULL);
4160
4161 _bfd_elf_print_private_bfd_data (abfd, ptr);
4162
4163 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4164
4165 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4166 fprintf (file, _(" [symbols have a _ prefix]"));
4167 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4168 == EF_CRIS_VARIANT_COMMON_V10_V32)
4169 fprintf (file, _(" [v10 and v32]"));
4170 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4171 == EF_CRIS_VARIANT_V32)
4172 fprintf (file, _(" [v32]"));
4173
4174 fputc ('\n', file);
4175 return TRUE;
4176 }
4177
4178 /* Don't mix files with and without a leading underscore. */
4179
4180 static bfd_boolean
4181 cris_elf_merge_private_bfd_data (ibfd, obfd)
4182 bfd *ibfd;
4183 bfd *obfd;
4184 {
4185 int imach, omach;
4186
4187 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4188 return FALSE;
4189
4190 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4191 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4192 return TRUE;
4193
4194 imach = bfd_get_mach (ibfd);
4195
4196 if (! elf_flags_init (obfd))
4197 {
4198 /* This happens when ld starts out with a 'blank' output file. */
4199 elf_flags_init (obfd) = TRUE;
4200
4201 /* We ignore the linker-set mach, and instead set it according to
4202 the first input file. This would also happen if we could
4203 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4204 This allows us to keep the same linker config across
4205 cris(v0..v10) and crisv32. The drawback is that we can't force
4206 the output type, which might be a sane thing to do for a
4207 v10+v32 compatibility object. */
4208 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4209 return FALSE;
4210 }
4211
4212 if (bfd_get_symbol_leading_char (ibfd)
4213 != bfd_get_symbol_leading_char (obfd))
4214 {
4215 (*_bfd_error_handler)
4216 (bfd_get_symbol_leading_char (ibfd) == '_'
4217 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4218 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4219 ibfd);
4220 bfd_set_error (bfd_error_bad_value);
4221 return FALSE;
4222 }
4223
4224 omach = bfd_get_mach (obfd);
4225
4226 if (imach != omach)
4227 {
4228 /* We can get an incompatible combination only if either is
4229 bfd_mach_cris_v32, and the other one isn't compatible. */
4230 if ((imach == bfd_mach_cris_v32
4231 && omach != bfd_mach_cris_v10_v32)
4232 || (omach == bfd_mach_cris_v32
4233 && imach != bfd_mach_cris_v10_v32))
4234 {
4235 (*_bfd_error_handler)
4236 ((imach == bfd_mach_cris_v32)
4237 ? _("%B contains CRIS v32 code, incompatible"
4238 " with previous objects")
4239 : _("%B contains non-CRIS-v32 code, incompatible"
4240 " with previous objects"),
4241 ibfd);
4242 bfd_set_error (bfd_error_bad_value);
4243 return FALSE;
4244 }
4245
4246 /* We don't have to check the case where the input is compatible
4247 with v10 and v32, because the output is already known to be set
4248 to the other (compatible) mach. */
4249 if (omach == bfd_mach_cris_v10_v32
4250 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4251 return FALSE;
4252 }
4253
4254 return TRUE;
4255 }
4256
4257 /* Do side-effects of e_flags copying to obfd. */
4258
4259 static bfd_boolean
4260 cris_elf_copy_private_bfd_data (ibfd, obfd)
4261 bfd *ibfd;
4262 bfd *obfd;
4263 {
4264 /* Call the base function. */
4265 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4266 return FALSE;
4267
4268 /* If output is big-endian for some obscure reason, stop here. */
4269 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4270 return FALSE;
4271
4272 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4273 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4274 return TRUE;
4275
4276 /* Do what we really came here for. */
4277 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4278 }
4279
4280 static enum elf_reloc_type_class
4281 elf_cris_reloc_type_class (rela)
4282 const Elf_Internal_Rela *rela;
4283 {
4284 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4285 switch (r_type)
4286 {
4287 case R_CRIS_RELATIVE:
4288 return reloc_class_relative;
4289 case R_CRIS_JUMP_SLOT:
4290 return reloc_class_plt;
4291 case R_CRIS_COPY:
4292 return reloc_class_copy;
4293 default:
4294 return reloc_class_normal;
4295 }
4296 }
4297
4298 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4299 two GOT entries from three types with two different sizes. We handle
4300 it as a single entry, so we can use the regular offset-calculation
4301 machinery. */
4302
4303 static bfd_vma
4304 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4305 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4306 struct elf_link_hash_entry *hr,
4307 bfd *ibfd,
4308 unsigned long symndx)
4309 {
4310 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4311 bfd_vma eltsiz = 0;
4312
4313 /* We may have one regular GOT entry or up to two TLS GOT
4314 entries. */
4315 if (h == NULL)
4316 {
4317 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4318 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4319
4320 BFD_ASSERT (local_got_refcounts != NULL);
4321
4322 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4323 {
4324 /* We can't have a variable referred to both as a regular
4325 variable and through TLS relocs. */
4326 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4327 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4328 return 4;
4329 }
4330
4331 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4332 eltsiz += 8;
4333
4334 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4335 eltsiz += 4;
4336 }
4337 else
4338 {
4339 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4340 if (hh->reg_got_refcount > 0)
4341 {
4342 /* The actual error-on-input is emitted elsewhere. */
4343 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4344 return 4;
4345 }
4346
4347 if (hh->dtp_refcount > 0)
4348 eltsiz += 8;
4349
4350 if (hh->tprel_refcount > 0)
4351 eltsiz += 4;
4352 }
4353
4354 /* We're only called when h->got.refcount is non-zero, so we must
4355 have a non-zero size. */
4356 BFD_ASSERT (eltsiz != 0);
4357 return eltsiz;
4358 }
4359 \f
4360 #define ELF_ARCH bfd_arch_cris
4361 #define ELF_TARGET_ID CRIS_ELF_DATA
4362 #define ELF_MACHINE_CODE EM_CRIS
4363 #define ELF_MAXPAGESIZE 0x2000
4364
4365 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4366 #define TARGET_LITTLE_NAME "elf32-cris"
4367 #define elf_symbol_leading_char 0
4368
4369 #define elf_info_to_howto_rel NULL
4370 #define elf_info_to_howto cris_info_to_howto_rela
4371 #define elf_backend_relocate_section cris_elf_relocate_section
4372 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4373 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4374 #define elf_backend_plt_sym_val cris_elf_plt_sym_val
4375 #define elf_backend_check_relocs cris_elf_check_relocs
4376 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4377 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4378
4379 #define elf_backend_can_gc_sections 1
4380 #define elf_backend_can_refcount 1
4381
4382 #define elf_backend_object_p cris_elf_object_p
4383 #define elf_backend_final_write_processing \
4384 cris_elf_final_write_processing
4385 #define bfd_elf32_bfd_print_private_bfd_data \
4386 cris_elf_print_private_bfd_data
4387 #define bfd_elf32_bfd_merge_private_bfd_data \
4388 cris_elf_merge_private_bfd_data
4389 #define bfd_elf32_bfd_copy_private_bfd_data \
4390 cris_elf_copy_private_bfd_data
4391
4392 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4393 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4394
4395 #define bfd_elf32_bfd_link_hash_table_create \
4396 elf_cris_link_hash_table_create
4397 #define elf_backend_adjust_dynamic_symbol \
4398 elf_cris_adjust_dynamic_symbol
4399 #define elf_backend_copy_indirect_symbol \
4400 elf_cris_copy_indirect_symbol
4401 #define elf_backend_size_dynamic_sections \
4402 elf_cris_size_dynamic_sections
4403 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4404 #define elf_backend_finish_dynamic_symbol \
4405 elf_cris_finish_dynamic_symbol
4406 #define elf_backend_finish_dynamic_sections \
4407 elf_cris_finish_dynamic_sections
4408 #define elf_backend_create_dynamic_sections \
4409 _bfd_elf_create_dynamic_sections
4410 #define bfd_elf32_bfd_final_link \
4411 bfd_elf_gc_common_final_link
4412 #define elf_backend_hide_symbol elf_cris_hide_symbol
4413 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4414
4415 #define elf_backend_want_got_plt 1
4416 #define elf_backend_plt_readonly 1
4417 #define elf_backend_want_plt_sym 0
4418 #define elf_backend_got_header_size 12
4419 #define elf_backend_got_elt_size elf_cris_got_elt_size
4420
4421 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4422 linking and libraries (if it's a win of any significance). Until then,
4423 take the easy route. */
4424 #define elf_backend_may_use_rel_p 0
4425 #define elf_backend_may_use_rela_p 1
4426 #define elf_backend_rela_normal 1
4427
4428 #include "elf32-target.h"
4429
4430 #undef TARGET_LITTLE_SYM
4431 #undef TARGET_LITTLE_NAME
4432 #undef elf_symbol_leading_char
4433
4434 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4435 #define TARGET_LITTLE_NAME "elf32-us-cris"
4436 #define elf_symbol_leading_char '_'
4437 #undef elf32_bed
4438 #define elf32_bed elf32_us_cris_bed
4439
4440 #include "elf32-target.h"
GDB Binutils - Deliverables
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