Remove trailing white spaces on gas
[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 bfd_reloc_status_type
33 cris_elf_pcrel_reloc (bfd *, arelent *, asymbol *, void *,
34 asection *, bfd *, char **);
35 static bfd_boolean
36 cris_elf_set_mach_from_flags (bfd *, unsigned long);
37
38 /* Forward declarations. */
39 static reloc_howto_type cris_elf_howto_table [] =
40 {
41 /* This reloc does nothing. */
42 HOWTO (R_CRIS_NONE, /* type */
43 0, /* rightshift */
44 2, /* size (0 = byte, 1 = short, 2 = long) */
45 32, /* bitsize */
46 FALSE, /* pc_relative */
47 0, /* bitpos */
48 complain_overflow_bitfield, /* complain_on_overflow */
49 bfd_elf_generic_reloc, /* special_function */
50 "R_CRIS_NONE", /* name */
51 FALSE, /* partial_inplace */
52 0, /* src_mask */
53 0, /* dst_mask */
54 FALSE), /* pcrel_offset */
55
56 /* An 8 bit absolute relocation. */
57 HOWTO (R_CRIS_8, /* type */
58 0, /* rightshift */
59 0, /* size (0 = byte, 1 = short, 2 = long) */
60 8, /* bitsize */
61 FALSE, /* pc_relative */
62 0, /* bitpos */
63 complain_overflow_bitfield, /* complain_on_overflow */
64 bfd_elf_generic_reloc, /* special_function */
65 "R_CRIS_8", /* name */
66 FALSE, /* partial_inplace */
67 0x0000, /* src_mask */
68 0x00ff, /* dst_mask */
69 FALSE), /* pcrel_offset */
70
71 /* A 16 bit absolute relocation. */
72 HOWTO (R_CRIS_16, /* type */
73 0, /* rightshift */
74 1, /* size (0 = byte, 1 = short, 2 = long) */
75 16, /* bitsize */
76 FALSE, /* pc_relative */
77 0, /* bitpos */
78 complain_overflow_bitfield, /* complain_on_overflow */
79 bfd_elf_generic_reloc, /* special_function */
80 "R_CRIS_16", /* name */
81 FALSE, /* partial_inplace */
82 0x00000000, /* src_mask */
83 0x0000ffff, /* dst_mask */
84 FALSE), /* pcrel_offset */
85
86 /* A 32 bit absolute relocation. */
87 HOWTO (R_CRIS_32, /* type */
88 0, /* rightshift */
89 2, /* size (0 = byte, 1 = short, 2 = long) */
90 32, /* bitsize */
91 FALSE, /* pc_relative */
92 0, /* bitpos */
93 /* We don't want overflow complaints for 64-bit vma builds
94 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
95 32-bit ELF) where sym=0xc0001234.
96 Don't do this for the PIC relocs, as we don't expect to
97 see them with large offsets. */
98 complain_overflow_dont, /* complain_on_overflow */
99 bfd_elf_generic_reloc, /* special_function */
100 "R_CRIS_32", /* name */
101 FALSE, /* partial_inplace */
102 0x00000000, /* src_mask */
103 0xffffffff, /* dst_mask */
104 FALSE), /* pcrel_offset */
105
106 /* An 8 bit PC-relative relocation. */
107 HOWTO (R_CRIS_8_PCREL, /* type */
108 0, /* rightshift */
109 0, /* size (0 = byte, 1 = short, 2 = long) */
110 8, /* bitsize */
111 TRUE, /* pc_relative */
112 0, /* bitpos */
113 complain_overflow_bitfield, /* complain_on_overflow */
114 cris_elf_pcrel_reloc, /* special_function */
115 "R_CRIS_8_PCREL", /* name */
116 FALSE, /* partial_inplace */
117 0x0000, /* src_mask */
118 0x00ff, /* dst_mask */
119 TRUE), /* pcrel_offset */
120
121 /* A 16 bit PC-relative relocation. */
122 HOWTO (R_CRIS_16_PCREL, /* type */
123 0, /* rightshift */
124 1, /* size (0 = byte, 1 = short, 2 = long) */
125 16, /* bitsize */
126 TRUE, /* pc_relative */
127 0, /* bitpos */
128 complain_overflow_bitfield, /* complain_on_overflow */
129 cris_elf_pcrel_reloc, /* special_function */
130 "R_CRIS_16_PCREL", /* name */
131 FALSE, /* partial_inplace */
132 0x00000000, /* src_mask */
133 0x0000ffff, /* dst_mask */
134 TRUE), /* pcrel_offset */
135
136 /* A 32 bit PC-relative relocation. */
137 HOWTO (R_CRIS_32_PCREL, /* type */
138 0, /* rightshift */
139 2, /* size (0 = byte, 1 = short, 2 = long) */
140 32, /* bitsize */
141 TRUE, /* pc_relative */
142 0, /* bitpos */
143 complain_overflow_bitfield, /* complain_on_overflow */
144 cris_elf_pcrel_reloc, /* special_function */
145 "R_CRIS_32_PCREL", /* name */
146 FALSE, /* partial_inplace */
147 0x00000000, /* src_mask */
148 0xffffffff, /* dst_mask */
149 TRUE), /* pcrel_offset */
150
151 /* GNU extension to record C++ vtable hierarchy. */
152 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
153 0, /* rightshift */
154 2, /* size (0 = byte, 1 = short, 2 = long) */
155 0, /* bitsize */
156 FALSE, /* pc_relative */
157 0, /* bitpos */
158 complain_overflow_dont, /* complain_on_overflow */
159 NULL, /* special_function */
160 "R_CRIS_GNU_VTINHERIT", /* name */
161 FALSE, /* partial_inplace */
162 0, /* src_mask */
163 0, /* dst_mask */
164 FALSE), /* pcrel_offset */
165
166 /* GNU extension to record C++ vtable member usage. */
167 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
168 0, /* rightshift */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
170 0, /* bitsize */
171 FALSE, /* pc_relative */
172 0, /* bitpos */
173 complain_overflow_dont, /* complain_on_overflow */
174 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
175 "R_CRIS_GNU_VTENTRY", /* name */
176 FALSE, /* partial_inplace */
177 0, /* src_mask */
178 0, /* dst_mask */
179 FALSE), /* pcrel_offset */
180
181 /* This is used only by the dynamic linker. The symbol should exist
182 both in the object being run and in some shared library. The
183 dynamic linker copies the data addressed by the symbol from the
184 shared library into the object, because the object being
185 run has to have the data at some particular address. */
186 HOWTO (R_CRIS_COPY, /* type */
187 0, /* rightshift */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
189 32, /* bitsize */
190 FALSE, /* pc_relative */
191 0, /* bitpos */
192 complain_overflow_bitfield, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_CRIS_COPY", /* name */
195 FALSE, /* partial_inplace */
196 0, /* src_mask */
197 0, /* dst_mask */
198 FALSE), /* pcrel_offset */
199
200 /* Like R_CRIS_32, but used when setting global offset table entries. */
201 HOWTO (R_CRIS_GLOB_DAT, /* type */
202 0, /* rightshift */
203 2, /* size (0 = byte, 1 = short, 2 = long) */
204 32, /* bitsize */
205 FALSE, /* pc_relative */
206 0, /* bitpos */
207 complain_overflow_bitfield, /* complain_on_overflow */
208 bfd_elf_generic_reloc, /* special_function */
209 "R_CRIS_GLOB_DAT", /* name */
210 FALSE, /* partial_inplace */
211 0, /* src_mask */
212 0xffffffff, /* dst_mask */
213 FALSE), /* pcrel_offset */
214
215 /* Marks a procedure linkage table entry for a symbol. */
216 HOWTO (R_CRIS_JUMP_SLOT, /* type */
217 0, /* rightshift */
218 2, /* size (0 = byte, 1 = short, 2 = long) */
219 32, /* bitsize */
220 FALSE, /* pc_relative */
221 0, /* bitpos */
222 complain_overflow_bitfield, /* complain_on_overflow */
223 bfd_elf_generic_reloc, /* special_function */
224 "R_CRIS_JUMP_SLOT", /* name */
225 FALSE, /* partial_inplace */
226 0, /* src_mask */
227 0, /* dst_mask */
228 FALSE), /* pcrel_offset */
229
230 /* Used only by the dynamic linker. When the object is run, this
231 longword is set to the load address of the object, plus the
232 addend. */
233 HOWTO (R_CRIS_RELATIVE, /* type */
234 0, /* rightshift */
235 2, /* size (0 = byte, 1 = short, 2 = long) */
236 32, /* bitsize */
237 FALSE, /* pc_relative */
238 0, /* bitpos */
239 complain_overflow_bitfield, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_CRIS_RELATIVE", /* name */
242 FALSE, /* partial_inplace */
243 0, /* src_mask */
244 0xffffffff, /* dst_mask */
245 FALSE), /* pcrel_offset */
246
247 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
248 HOWTO (R_CRIS_16_GOT, /* type */
249 0, /* rightshift */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
251 16, /* bitsize */
252 FALSE, /* pc_relative */
253 0, /* bitpos */
254 complain_overflow_bitfield, /* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_CRIS_16_GOT", /* name */
257 FALSE, /* partial_inplace */
258 0, /* src_mask */
259 0xffff, /* dst_mask */
260 FALSE), /* pcrel_offset */
261
262 HOWTO (R_CRIS_32_GOT, /* type */
263 0, /* rightshift */
264 2, /* size (0 = byte, 1 = short, 2 = long) */
265 32, /* bitsize */
266 FALSE, /* pc_relative */
267 0, /* bitpos */
268 complain_overflow_bitfield, /* complain_on_overflow */
269 bfd_elf_generic_reloc, /* special_function */
270 "R_CRIS_32_GOT", /* name */
271 FALSE, /* partial_inplace */
272 0, /* src_mask */
273 0xffffffff, /* dst_mask */
274 FALSE), /* pcrel_offset */
275
276 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
277 the GOT table for the symbol. */
278 HOWTO (R_CRIS_16_GOTPLT, /* type */
279 0, /* rightshift */
280 1, /* size (0 = byte, 1 = short, 2 = long) */
281 16, /* bitsize */
282 FALSE, /* pc_relative */
283 0, /* bitpos */
284 complain_overflow_bitfield, /* complain_on_overflow */
285 bfd_elf_generic_reloc, /* special_function */
286 "R_CRIS_16_GOTPLT", /* name */
287 FALSE, /* partial_inplace */
288 0, /* src_mask */
289 0xffff, /* dst_mask */
290 FALSE), /* pcrel_offset */
291
292 HOWTO (R_CRIS_32_GOTPLT, /* type */
293 0, /* rightshift */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
295 32, /* bitsize */
296 FALSE, /* pc_relative */
297 0, /* bitpos */
298 complain_overflow_bitfield, /* complain_on_overflow */
299 bfd_elf_generic_reloc, /* special_function */
300 "R_CRIS_32_GOTPLT", /* name */
301 FALSE, /* partial_inplace */
302 0, /* src_mask */
303 0xffffffff, /* dst_mask */
304 FALSE), /* pcrel_offset */
305
306 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
307 be necessary. */
308 HOWTO (R_CRIS_32_GOTREL, /* type */
309 0, /* rightshift */
310 2, /* size (0 = byte, 1 = short, 2 = long) */
311 32, /* 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_32_GOTREL", /* name */
317 FALSE, /* partial_inplace */
318 0, /* src_mask */
319 0xffffffff, /* dst_mask */
320 FALSE), /* pcrel_offset */
321
322 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
323 to create PLT entry for symbol. */
324 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
325 0, /* rightshift */
326 2, /* size (0 = byte, 1 = short, 2 = long) */
327 32, /* bitsize */
328 FALSE, /* pc_relative */
329 0, /* bitpos */
330 complain_overflow_bitfield, /* complain_on_overflow */
331 bfd_elf_generic_reloc, /* special_function */
332 "R_CRIS_32_PLT_GOTREL", /* name */
333 FALSE, /* partial_inplace */
334 0, /* src_mask */
335 0xffffffff, /* dst_mask */
336 FALSE), /* pcrel_offset */
337
338 /* A 32-bit offset from PC (location after the relocation) + addend to
339 entry for this symbol in PLT and request to create PLT entry for
340 symbol. */
341 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
342 0, /* rightshift */
343 2, /* size (0 = byte, 1 = short, 2 = long) */
344 32, /* bitsize */
345 TRUE, /* pc_relative */
346 0, /* bitpos */
347 complain_overflow_bitfield, /* complain_on_overflow */
348 cris_elf_pcrel_reloc, /* special_function */
349 "R_CRIS_32_PLT_PCREL", /* name */
350 FALSE, /* partial_inplace */
351 0, /* src_mask */
352 0xffffffff, /* dst_mask */
353 TRUE), /* pcrel_offset */
354
355 /* We don't handle these in any special manner and cross-format
356 linking is not supported; just recognize them enough to pass them
357 around. FIXME: do the same for most PIC relocs and add sanity
358 tests to actually refuse gracefully to handle these and PIC
359 relocs for cross-format linking. */
360 #define TLSHOWTO32(name) \
361 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
362 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
363 #define TLSHOWTO16X(name, X) \
364 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
365 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
366 #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
367 #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
368
369 TLSHOWTO32 (R_CRIS_32_GOT_GD),
370 TLSHOWTO16 (R_CRIS_16_GOT_GD),
371 TLSHOWTO32 (R_CRIS_32_GD),
372 TLSHOWTO32 (R_CRIS_DTP),
373 TLSHOWTO32 (R_CRIS_32_DTPREL),
374 TLSHOWTO16S (R_CRIS_16_DTPREL),
375 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
376 TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
377 TLSHOWTO32 (R_CRIS_32_TPREL),
378 TLSHOWTO16S (R_CRIS_16_TPREL),
379 TLSHOWTO32 (R_CRIS_DTPMOD),
380 TLSHOWTO32 (R_CRIS_32_IE)
381 };
382 \f
383 /* Map BFD reloc types to CRIS ELF reloc types. */
384
385 struct cris_reloc_map
386 {
387 bfd_reloc_code_real_type bfd_reloc_val;
388 unsigned int cris_reloc_val;
389 };
390
391 static const struct cris_reloc_map cris_reloc_map [] =
392 {
393 { BFD_RELOC_NONE, R_CRIS_NONE },
394 { BFD_RELOC_8, R_CRIS_8 },
395 { BFD_RELOC_16, R_CRIS_16 },
396 { BFD_RELOC_32, R_CRIS_32 },
397 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
398 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
399 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
400 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
401 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
402 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
403 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
404 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
405 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
406 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
407 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
408 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
409 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
410 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
411 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
412 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
413 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
414 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
415 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
416 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
417 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
418 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
419 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
420 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
421 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
422 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
423 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
424 { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
425 };
426
427 static reloc_howto_type *
428 cris_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
429 bfd_reloc_code_real_type code)
430 {
431 unsigned int i;
432
433 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
434 if (cris_reloc_map [i].bfd_reloc_val == code)
435 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
436
437 return NULL;
438 }
439
440 static reloc_howto_type *
441 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
442 {
443 unsigned int i;
444
445 for (i = 0;
446 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
447 i++)
448 if (cris_elf_howto_table[i].name != NULL
449 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
450 return &cris_elf_howto_table[i];
451
452 return NULL;
453 }
454
455 /* Set the howto pointer for an CRIS ELF reloc. */
456
457 static void
458 cris_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
459 arelent * cache_ptr,
460 Elf_Internal_Rela * dst)
461 {
462 enum elf_cris_reloc_type r_type;
463
464 r_type = ELF32_R_TYPE (dst->r_info);
465 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
466 cache_ptr->howto = & cris_elf_howto_table [r_type];
467 }
468
469 bfd_reloc_status_type
470 cris_elf_pcrel_reloc (bfd *abfd ATTRIBUTE_UNUSED,
471 arelent *reloc_entry,
472 asymbol *symbol,
473 void * data ATTRIBUTE_UNUSED,
474 asection *input_section,
475 bfd *output_bfd,
476 char **error_message ATTRIBUTE_UNUSED)
477 {
478 /* By default (using only bfd_elf_generic_reloc when linking to
479 non-ELF formats) PC-relative relocs are relative to the beginning
480 of the reloc. CRIS PC-relative relocs are relative to the position
481 *after* the reloc because that's what pre-CRISv32 PC points to
482 after reading an insn field with that reloc. (For CRISv32, PC is
483 actually relative to the start of the insn, but we keep the old
484 definition.) Still, we use as much generic machinery as we can.
485
486 Only adjust when doing a final link. */
487 if (output_bfd == (bfd *) NULL)
488 reloc_entry->addend -= 1 << reloc_entry->howto->size;
489
490 return
491 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
492 input_section, output_bfd, error_message);
493 }
494 \f
495 /* Support for core dump NOTE sections.
496 The slightly unintuitive code layout is an attempt to keep at least
497 some similarities with other ports, hoping to simplify general
498 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
499
500 static bfd_boolean
501 cris_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
502 {
503 int offset;
504 size_t size;
505
506 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
507 switch (note->descsz)
508 {
509 default:
510 return FALSE;
511
512 case 202: /* Linux/CRISv32 */
513 /* pr_cursig */
514 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
515
516 /* pr_pid */
517 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 22);
518
519 /* pr_reg */
520 offset = 70;
521 size = 128;
522
523 break;
524 }
525 else
526 switch (note->descsz)
527 {
528 default:
529 return FALSE;
530
531 case 214: /* Linux/CRIS */
532 /* pr_cursig */
533 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
534
535 /* pr_pid */
536 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 22);
537
538 /* pr_reg */
539 offset = 70;
540 size = 140;
541
542 break;
543 }
544
545 /* Make a ".reg/999" section. */
546 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
547 size, note->descpos + offset);
548 }
549
550 static bfd_boolean
551 cris_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
552 {
553 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
554 switch (note->descsz)
555 {
556 default:
557 return FALSE;
558
559 case 124: /* Linux/CRISv32 elf_prpsinfo */
560 elf_tdata (abfd)->core_program
561 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
562 elf_tdata (abfd)->core_command
563 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
564 }
565 else
566 switch (note->descsz)
567 {
568 default:
569 return FALSE;
570
571 case 124: /* Linux/CRIS elf_prpsinfo */
572 elf_tdata (abfd)->core_program
573 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
574 elf_tdata (abfd)->core_command
575 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
576 }
577
578 /* Note that for some reason, a spurious space is tacked
579 onto the end of the args in some (at least one anyway)
580 implementations, so strip it off if it exists. */
581
582 {
583 char *command = elf_tdata (abfd)->core_command;
584 int n = strlen (command);
585
586 if (0 < n && command[n - 1] == ' ')
587 command[n - 1] = '\0';
588 }
589
590 return TRUE;
591 }
592 \f
593 /* The name of the dynamic interpreter. This is put in the .interp
594 section. */
595
596 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
597
598 /* The size in bytes of an entry in the procedure linkage table. */
599
600 #define PLT_ENTRY_SIZE 20
601 #define PLT_ENTRY_SIZE_V32 26
602
603 /* The first entry in an absolute procedure linkage table looks like this. */
604
605 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
606 {
607 0xfc, 0xe1,
608 0x7e, 0x7e, /* push mof. */
609 0x7f, 0x0d, /* (dip [pc+]) */
610 0, 0, 0, 0, /* Replaced with address of .got + 4. */
611 0x30, 0x7a, /* move [...],mof */
612 0x7f, 0x0d, /* (dip [pc+]) */
613 0, 0, 0, 0, /* Replaced with address of .got + 8. */
614 0x30, 0x09 /* jump [...] */
615 };
616
617 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
618 {
619 0x84, 0xe2, /* subq 4,$sp */
620 0x6f, 0xfe, /* move.d 0,$acr */
621 0, 0, 0, 0, /* Replaced by address of .got + 4. */
622 0x7e, 0x7a, /* move $mof,[$sp] */
623 0x3f, 0x7a, /* move [$acr],$mof */
624 0x04, 0xf2, /* addq 4,acr */
625 0x6f, 0xfa, /* move.d [$acr],$acr */
626 0xbf, 0x09, /* jump $acr */
627 0xb0, 0x05, /* nop */
628 0, 0 /* Pad out to 26 bytes. */
629 };
630
631 /* Subsequent entries in an absolute procedure linkage table look like
632 this. */
633
634 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
635 {
636 0x7f, 0x0d, /* (dip [pc+]) */
637 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
638 0x30, 0x09, /* jump [...] */
639 0x3f, 0x7e, /* move [pc+],mof */
640 0, 0, 0, 0, /* Replaced with offset into relocation table. */
641 0x2f, 0xfe, /* add.d [pc+],pc */
642 0xec, 0xff,
643 0xff, 0xff /* Replaced with offset to start of .plt. */
644 };
645
646 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
647 {
648 0x6f, 0xfe, /* move.d 0,$acr */
649 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
650 0x6f, 0xfa, /* move.d [$acr],$acr */
651 0xbf, 0x09, /* jump $acr */
652 0xb0, 0x05, /* nop */
653 0x3f, 0x7e, /* move 0,mof */
654 0, 0, 0, 0, /* Replaced with offset into relocation table. */
655 0xbf, 0x0e, /* ba start_of_plt0_entry */
656 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
657 0xb0, 0x05 /* nop */
658 };
659
660 /* The first entry in a PIC procedure linkage table looks like this. */
661
662 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
663 {
664 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
665 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
666 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
667 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
668 };
669
670 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
671 {
672 0x84, 0xe2, /* subq 4,$sp */
673 0x04, 0x01, /* addoq 4,$r0,$acr */
674 0x7e, 0x7a, /* move $mof,[$sp] */
675 0x3f, 0x7a, /* move [$acr],$mof */
676 0x04, 0xf2, /* addq 4,$acr */
677 0x6f, 0xfa, /* move.d [$acr],$acr */
678 0xbf, 0x09, /* jump $acr */
679 0xb0, 0x05, /* nop */
680 0, 0, /* Pad out to 26 bytes. */
681 0, 0, 0, 0,
682 0, 0, 0, 0
683 };
684
685 /* Subsequent entries in a PIC procedure linkage table look like this. */
686
687 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
688 {
689 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
690 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
691 0x30, 0x09, /* jump [...] */
692 0x3f, 0x7e, /* move [pc+],mof */
693 0, 0, 0, 0, /* Replaced with offset into relocation table. */
694 0x2f, 0xfe, /* add.d [pc+],pc */
695 0xec, 0xff, /* Replaced with offset to start of .plt. */
696 0xff, 0xff
697 };
698
699 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
700 {
701 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
702 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
703 0x6f, 0xfa, /* move.d [$acr],$acr */
704 0xbf, 0x09, /* jump $acr */
705 0xb0, 0x05, /* nop */
706 0x3f, 0x7e, /* move relocoffs,$mof */
707 0, 0, 0, 0, /* Replaced with offset into relocation table. */
708 0xbf, 0x0e, /* ba start_of_plt */
709 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
710 0xb0, 0x05 /* nop */
711 };
712 \f
713 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
714 (and most other PIC/shlib stuff). Check that we don't drift away
715 without reason.
716
717 The CRIS linker, like the m68k and i386 linkers (and probably the rest
718 too) needs to keep track of the number of relocs that it decides to
719 copy in check_relocs for each symbol. This is so that it can discard
720 PC relative relocs if it doesn't need them when linking with
721 -Bsymbolic. We store the information in a field extending the regular
722 ELF linker hash table. */
723
724 /* This structure keeps track of the number of PC relative relocs we have
725 copied for a given symbol. */
726
727 struct elf_cris_pcrel_relocs_copied
728 {
729 /* Next section. */
730 struct elf_cris_pcrel_relocs_copied *next;
731
732 /* A section in dynobj. */
733 asection *section;
734
735 /* Number of relocs copied in this section. */
736 bfd_size_type count;
737
738 /* Example of reloc being copied, for message. */
739 enum elf_cris_reloc_type r_type;
740 };
741
742 /* CRIS ELF linker hash entry. */
743
744 struct elf_cris_link_hash_entry
745 {
746 struct elf_link_hash_entry root;
747
748 /* Number of PC relative relocs copied for this symbol. */
749 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
750
751 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
752 both a general GOT and a PLT-specific GOT entry for the same symbol,
753 when it is referenced both as a function and as a function pointer.
754
755 Number of GOTPLT references for a function. */
756 bfd_signed_vma gotplt_refcount;
757
758 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
759 (zero is never used as an index). FIXME: We should be able to fold
760 this with gotplt_refcount in a union, like the got and plt unions in
761 elf_link_hash_entry. */
762 bfd_size_type gotplt_offset;
763
764 /* The root.got.refcount is the sum of the regular reference counts
765 (this) and those members below. We have to keep a separate count
766 to track when we've found the first (or last) reference to a
767 regular got entry. The offset is in root.got.offset. */
768 bfd_signed_vma reg_got_refcount;
769
770 /* Similar to the above, the number of reloc references to this
771 symbols that need a R_CRIS_32_TPREL slot. The offset is in
772 root.got.offset, because this and .dtp_refcount can't validly
773 happen when there's also a regular GOT entry; that's invalid
774 input for which an error is emitted. */
775 bfd_signed_vma tprel_refcount;
776
777 /* Similar to the above, the number of reloc references to this
778 symbols that need a R_CRIS_DTP slot. The offset is in
779 root.got.offset; plus 4 if .tprel_refcount > 0. */
780 bfd_signed_vma dtp_refcount;
781 };
782
783 static bfd_boolean
784 elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *,
785 void * );
786 static bfd_boolean
787 elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *,
788 void *);
789
790 /* The local_got_refcounts and local_got_offsets are a multiple of
791 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
792 refcount for GOT itself, see code), with the summary / group offset
793 for local symbols located at offset N, reference counts for
794 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
795 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
796 3*LSNUM. */
797
798 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
799 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
800 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
801 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
802
803 /* CRIS ELF linker hash table. */
804
805 struct elf_cris_link_hash_table
806 {
807 struct elf_link_hash_table root;
808
809 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
810 since we try and avoid creating GOTPLT:s when there's already a GOT.
811 Instead, we keep and update the next available index here. */
812 bfd_size_type next_gotplt_entry;
813
814 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
815 been seen for any input; if != 0, then the constant-offset
816 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
817 negative at relocation, so that we don't need an extra flag for
818 when the reloc is output. */
819 bfd_signed_vma dtpmod_refcount;
820 };
821
822 /* Traverse a CRIS ELF linker hash table. */
823
824 #define elf_cris_link_hash_traverse(table, func, info) \
825 (elf_link_hash_traverse \
826 (&(table)->root, \
827 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
828 (info)))
829
830 /* Get the CRIS ELF linker hash table from a link_info structure. */
831
832 #define elf_cris_hash_table(p) \
833 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
834 == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL)
835
836 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
837 "parent class"). The .root reference is just a simple type
838 check on the argument. */
839
840 #define elf_cris_hash_entry(p) \
841 ((struct elf_cris_link_hash_entry *) (&(p)->root))
842
843 /* Create an entry in a CRIS ELF linker hash table. */
844
845 static struct bfd_hash_entry *
846 elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry,
847 struct bfd_hash_table *table,
848 const char *string)
849 {
850 struct elf_cris_link_hash_entry *ret =
851 (struct elf_cris_link_hash_entry *) entry;
852
853 /* Allocate the structure if it has not already been allocated by a
854 subclass. */
855 if (ret == (struct elf_cris_link_hash_entry *) NULL)
856 ret = ((struct elf_cris_link_hash_entry *)
857 bfd_hash_allocate (table,
858 sizeof (struct elf_cris_link_hash_entry)));
859 if (ret == (struct elf_cris_link_hash_entry *) NULL)
860 return (struct bfd_hash_entry *) ret;
861
862 /* Call the allocation method of the superclass. */
863 ret = ((struct elf_cris_link_hash_entry *)
864 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
865 table, string));
866 if (ret != (struct elf_cris_link_hash_entry *) NULL)
867 {
868 ret->pcrel_relocs_copied = NULL;
869 ret->gotplt_refcount = 0;
870 ret->gotplt_offset = 0;
871 ret->dtp_refcount = 0;
872 ret->tprel_refcount = 0;
873 ret->reg_got_refcount = 0;
874 }
875
876 return (struct bfd_hash_entry *) ret;
877 }
878
879 /* Create a CRIS ELF linker hash table. */
880
881 static struct bfd_link_hash_table *
882 elf_cris_link_hash_table_create (bfd *abfd)
883 {
884 struct elf_cris_link_hash_table *ret;
885 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
886
887 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
888 if (ret == (struct elf_cris_link_hash_table *) NULL)
889 return NULL;
890
891 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
892 elf_cris_link_hash_newfunc,
893 sizeof (struct elf_cris_link_hash_entry),
894 CRIS_ELF_DATA))
895 {
896 free (ret);
897 return NULL;
898 }
899
900 /* Initialize to skip over the first three entries in the gotplt; they
901 are used for run-time symbol evaluation. */
902 ret->next_gotplt_entry = 12;
903
904 /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */
905 ret->dtpmod_refcount = 0;
906
907 return &ret->root.root;
908 }
909 \f
910 /* Perform a single relocation. By default we use the standard BFD
911 routines, with a few tweaks. */
912
913 static bfd_reloc_status_type
914 cris_final_link_relocate (reloc_howto_type * howto,
915 bfd * input_bfd,
916 asection * input_section,
917 bfd_byte * contents,
918 Elf_Internal_Rela * rel,
919 bfd_vma relocation)
920 {
921 bfd_reloc_status_type r;
922 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
923
924 /* PC-relative relocations are relative to the position *after*
925 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
926 not a single byte, since PC must be 16-bit-aligned. */
927 switch (r_type)
928 {
929 /* Check that the 16-bit GOT relocs are positive. */
930 case R_CRIS_16_GOTPLT:
931 case R_CRIS_16_GOT:
932 if ((bfd_signed_vma) relocation < 0)
933 return bfd_reloc_overflow;
934 break;
935
936 case R_CRIS_32_PLT_PCREL:
937 case R_CRIS_32_PCREL:
938 relocation -= 2;
939 /* Fall through. */
940 case R_CRIS_8_PCREL:
941 case R_CRIS_16_PCREL:
942 relocation -= 2;
943 break;
944
945 default:
946 break;
947 }
948
949 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
950 contents, rel->r_offset,
951 relocation, rel->r_addend);
952 return r;
953 }
954 \f
955
956 /* The number of errors left before we stop outputting reloc-specific
957 explanatory messages. By coincidence, this works nicely together
958 with the default number of messages you'll get from LD about
959 "relocation truncated to fit" messages before you get an
960 "additional relocation overflows omitted from the output". */
961 static int additional_relocation_error_msg_count = 10;
962
963 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
964 copied, for further comments. */
965
966 static bfd_boolean
967 cris_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
968 struct bfd_link_info *info,
969 bfd *input_bfd,
970 asection *input_section,
971 bfd_byte *contents,
972 Elf_Internal_Rela *relocs,
973 Elf_Internal_Sym *local_syms,
974 asection **local_sections)
975 {
976 struct elf_cris_link_hash_table * htab;
977 bfd *dynobj;
978 Elf_Internal_Shdr *symtab_hdr;
979 struct elf_link_hash_entry **sym_hashes;
980 bfd_vma *local_got_offsets;
981 asection *sgot;
982 asection *splt;
983 asection *sreloc;
984 Elf_Internal_Rela *rel;
985 Elf_Internal_Rela *relend;
986 asection *srelgot;
987
988 htab = elf_cris_hash_table (info);
989 if (htab == NULL)
990 return FALSE;
991
992 dynobj = elf_hash_table (info)->dynobj;
993 local_got_offsets = elf_local_got_offsets (input_bfd);
994 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
995 sym_hashes = elf_sym_hashes (input_bfd);
996 relend = relocs + input_section->reloc_count;
997
998 sgot = NULL;
999 splt = NULL;
1000 sreloc = NULL;
1001 srelgot = NULL;
1002
1003 if (dynobj != NULL)
1004 {
1005 splt = bfd_get_linker_section (dynobj, ".plt");
1006 sgot = bfd_get_linker_section (dynobj, ".got");
1007 }
1008
1009 for (rel = relocs; rel < relend; rel ++)
1010 {
1011 reloc_howto_type *howto;
1012 unsigned long r_symndx;
1013 Elf_Internal_Sym *sym;
1014 asection *sec;
1015 struct elf_link_hash_entry *h;
1016 bfd_vma relocation;
1017 bfd_reloc_status_type r;
1018 const char *symname = NULL;
1019 enum elf_cris_reloc_type r_type;
1020
1021 r_type = ELF32_R_TYPE (rel->r_info);
1022
1023 if ( r_type == R_CRIS_GNU_VTINHERIT
1024 || r_type == R_CRIS_GNU_VTENTRY)
1025 continue;
1026
1027 r_symndx = ELF32_R_SYM (rel->r_info);
1028 howto = cris_elf_howto_table + r_type;
1029 h = NULL;
1030 sym = NULL;
1031 sec = NULL;
1032
1033 if (r_symndx < symtab_hdr->sh_info)
1034 {
1035 sym = local_syms + r_symndx;
1036 sec = local_sections [r_symndx];
1037 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1038
1039 symname = (bfd_elf_string_from_elf_section
1040 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1041 if (symname == NULL)
1042 symname = bfd_section_name (input_bfd, sec);
1043 }
1044 else
1045 {
1046 bfd_boolean warned;
1047 bfd_boolean unresolved_reloc;
1048
1049 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1050 r_symndx, symtab_hdr, sym_hashes,
1051 h, sec, relocation,
1052 unresolved_reloc, warned);
1053
1054 symname = h->root.root.string;
1055
1056 if (unresolved_reloc
1057 /* Perhaps we should detect the cases that
1058 sec->output_section is expected to be NULL like i386 and
1059 m68k, but apparently (and according to elfxx-ia64.c) all
1060 valid cases are where the symbol is defined in a shared
1061 object which we link dynamically against. This includes
1062 PLT relocs for which we've created a PLT entry and other
1063 relocs for which we're prepared to create dynamic
1064 relocations.
1065
1066 For now, new situations cause us to just err when
1067 sec->output_offset is NULL but the object with the symbol
1068 is *not* dynamically linked against. Thus this will
1069 automatically remind us so we can see if there are other
1070 valid cases we need to revisit. */
1071 && (sec->owner->flags & DYNAMIC) != 0)
1072 relocation = 0;
1073
1074 else if (h->root.type == bfd_link_hash_defined
1075 || h->root.type == bfd_link_hash_defweak)
1076 {
1077 /* Here follow the cases where the relocation value must
1078 be zero (or when further handling is simplified when
1079 zero). I can't claim to understand the various
1080 conditions and they weren't described in the files
1081 where I copied them from (elf32-m68k.c and
1082 elf32-i386.c), but let's mention examples of where
1083 they happen. FIXME: Perhaps define and use a
1084 dynamic_symbol_p function like ia64.
1085
1086 - When creating a shared library, we can have an
1087 ordinary relocation for a symbol defined in a shared
1088 library (perhaps the one we create). We then make
1089 the relocation value zero, as the value seen now will
1090 be added into the relocation addend in this shared
1091 library, but must be handled only at dynamic-link
1092 time. FIXME: Not sure this example covers the
1093 h->elf_link_hash_flags test, though it's there in
1094 other targets. */
1095 if (info->shared
1096 && ((! info->symbolic && h->dynindx != -1)
1097 || !h->def_regular)
1098 && (input_section->flags & SEC_ALLOC) != 0
1099 && (r_type == R_CRIS_8
1100 || r_type == R_CRIS_16
1101 || r_type == R_CRIS_32
1102 || r_type == R_CRIS_8_PCREL
1103 || r_type == R_CRIS_16_PCREL
1104 || r_type == R_CRIS_32_PCREL))
1105 relocation = 0;
1106 else if (!info->relocatable && unresolved_reloc
1107 && (_bfd_elf_section_offset (output_bfd, info,
1108 input_section,
1109 rel->r_offset)
1110 != (bfd_vma) -1))
1111 {
1112 _bfd_error_handler
1113 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1114 input_bfd,
1115 input_section,
1116 cris_elf_howto_table[r_type].name,
1117 symname);
1118 bfd_set_error (bfd_error_bad_value);
1119 return FALSE;
1120 }
1121 }
1122 }
1123
1124 if (sec != NULL && discarded_section (sec))
1125 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1126 rel, 1, relend, howto, 0, contents);
1127
1128 if (info->relocatable)
1129 continue;
1130
1131 switch (r_type)
1132 {
1133 case R_CRIS_16_GOTPLT:
1134 case R_CRIS_32_GOTPLT:
1135 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1136 but we require a PLT, and the PLT handling will take care of
1137 filling in the PLT-specific GOT entry. For the GOT offset,
1138 calculate it as we do when filling it in for the .got.plt
1139 section. If we don't have a PLT, punt to GOT handling. */
1140 if (h != NULL
1141 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1142 {
1143 asection *sgotplt
1144 = bfd_get_linker_section (dynobj, ".got.plt");
1145 bfd_vma got_offset;
1146
1147 BFD_ASSERT (h->dynindx != -1);
1148 BFD_ASSERT (sgotplt != NULL);
1149
1150 got_offset
1151 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1152
1153 relocation = got_offset;
1154 break;
1155 }
1156
1157 /* We didn't make a PLT entry for this symbol. Maybe everything is
1158 folded into the GOT. Other than folding, this happens when
1159 statically linking PIC code, or when using -Bsymbolic. Check
1160 that we instead have a GOT entry as done for us by
1161 elf_cris_adjust_dynamic_symbol, and drop through into the
1162 ordinary GOT cases. This must not happen for the
1163 executable, because any reference it does to a function
1164 that is satisfied by a DSO must generate a PLT. We assume
1165 these call-specific relocs don't address non-functions. */
1166 if (h != NULL
1167 && (h->got.offset == (bfd_vma) -1
1168 || (!info->shared
1169 && !(h->def_regular
1170 || (!h->def_dynamic
1171 && h->root.type == bfd_link_hash_undefweak)))))
1172 {
1173 (*_bfd_error_handler)
1174 ((h->got.offset == (bfd_vma) -1)
1175 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1176 " against symbol `%s'")
1177 : _("%B, section %A: No PLT for relocation %s"
1178 " against symbol `%s'"),
1179 input_bfd,
1180 input_section,
1181 cris_elf_howto_table[r_type].name,
1182 (symname != NULL && symname[0] != '\0'
1183 ? symname : _("[whose name is lost]")));
1184
1185 /* FIXME: Perhaps blaming input is not the right thing to
1186 do; this is probably an internal error. But it is true
1187 that we didn't like that particular input. */
1188 bfd_set_error (bfd_error_bad_value);
1189 return FALSE;
1190 }
1191 /* Fall through. */
1192
1193 /* The size of the actual relocation is not used here; we only
1194 fill in the GOT table here. */
1195 case R_CRIS_16_GOT:
1196 case R_CRIS_32_GOT:
1197 {
1198 bfd_vma off;
1199
1200 /* Note that despite using RELA relocations, the .got contents
1201 is always filled in with the link-relative relocation
1202 value; the addend. */
1203
1204 if (h != NULL)
1205 {
1206 off = h->got.offset;
1207 BFD_ASSERT (off != (bfd_vma) -1);
1208
1209 if (!elf_hash_table (info)->dynamic_sections_created
1210 || (! info->shared
1211 && (h->def_regular
1212 || h->type == STT_FUNC
1213 || h->needs_plt))
1214 || (info->shared
1215 && (info->symbolic || h->dynindx == -1)
1216 && h->def_regular))
1217 {
1218 /* This wasn't checked above for ! info->shared, but
1219 must hold there if we get here; the symbol must
1220 be defined in the regular program or be undefweak
1221 or be a function or otherwise need a PLT. */
1222 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1223 || info->shared
1224 || h->def_regular
1225 || h->type == STT_FUNC
1226 || h->needs_plt
1227 || h->root.type == bfd_link_hash_undefweak);
1228
1229 /* This is actually a static link, or it is a
1230 -Bsymbolic link and the symbol is defined locally,
1231 or is undefweak, or the symbol was forced to be
1232 local because of a version file, or we're not
1233 creating a dynamic object. We must initialize this
1234 entry in the global offset table. Since the offset
1235 must always be a multiple of 4, we use the least
1236 significant bit to record whether we have
1237 initialized it already.
1238
1239 If this GOT entry should be runtime-initialized, we
1240 will create a .rela.got relocation entry to
1241 initialize the value. This is done in the
1242 finish_dynamic_symbol routine. */
1243 if ((off & 1) != 0)
1244 off &= ~1;
1245 else
1246 {
1247 bfd_put_32 (output_bfd, relocation,
1248 sgot->contents + off);
1249 h->got.offset |= 1;
1250 }
1251 }
1252 }
1253 else
1254 {
1255 BFD_ASSERT (local_got_offsets != NULL
1256 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1257
1258 off = local_got_offsets[r_symndx];
1259
1260 /* The offset must always be a multiple of 4. We use
1261 the least significant bit to record whether we have
1262 already generated the necessary reloc. */
1263 if ((off & 1) != 0)
1264 off &= ~1;
1265 else
1266 {
1267 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1268
1269 if (info->shared)
1270 {
1271 Elf_Internal_Rela outrel;
1272 bfd_byte *loc;
1273
1274 if (srelgot == NULL)
1275 srelgot
1276 = bfd_get_linker_section (dynobj, ".rela.got");
1277 BFD_ASSERT (srelgot != NULL);
1278
1279 outrel.r_offset = (sgot->output_section->vma
1280 + sgot->output_offset
1281 + off);
1282 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1283 outrel.r_addend = relocation;
1284 loc = srelgot->contents;
1285 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1286 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1287 }
1288
1289 local_got_offsets[r_symndx] |= 1;
1290 }
1291 }
1292
1293 relocation = sgot->output_offset + off;
1294 if (rel->r_addend != 0)
1295 {
1296 /* We can't do anything for a relocation which is against
1297 a symbol *plus offset*. GOT holds relocations for
1298 symbols. Make this an error; the compiler isn't
1299 allowed to pass us these kinds of things. */
1300 if (h == NULL)
1301 (*_bfd_error_handler)
1302 (_("%B, section %A: relocation %s with non-zero addend %d"
1303 " against local symbol"),
1304 input_bfd,
1305 input_section,
1306 cris_elf_howto_table[r_type].name,
1307 rel->r_addend);
1308 else
1309 (*_bfd_error_handler)
1310 (_("%B, section %A: relocation %s with non-zero addend %d"
1311 " against symbol `%s'"),
1312 input_bfd,
1313 input_section,
1314 cris_elf_howto_table[r_type].name,
1315 rel->r_addend,
1316 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1317
1318 bfd_set_error (bfd_error_bad_value);
1319 return FALSE;
1320 }
1321 }
1322 break;
1323
1324 case R_CRIS_32_GOTREL:
1325 /* This relocation must only be performed against local symbols.
1326 It's also ok when we link a program and the symbol is either
1327 defined in an ordinary (non-DSO) object or is undefined weak. */
1328 if (h != NULL
1329 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1330 && !(!info->shared
1331 && (h->def_regular
1332 || (!h->def_dynamic
1333 && h->root.type == bfd_link_hash_undefweak))))
1334 {
1335 (*_bfd_error_handler)
1336 (_("%B, section %A: relocation %s is"
1337 " not allowed for global symbol: `%s'"),
1338 input_bfd,
1339 input_section,
1340 cris_elf_howto_table[r_type].name,
1341 symname);
1342 bfd_set_error (bfd_error_bad_value);
1343 return FALSE;
1344 }
1345
1346 /* This can happen if we get a link error with the input ELF
1347 variant mismatching the output variant. Emit an error so
1348 it's noticed if it happens elsewhere. */
1349 if (sgot == NULL)
1350 {
1351 (*_bfd_error_handler)
1352 (_("%B, section %A: relocation %s with no GOT created"),
1353 input_bfd,
1354 input_section,
1355 cris_elf_howto_table[r_type].name);
1356 bfd_set_error (bfd_error_bad_value);
1357 return FALSE;
1358 }
1359
1360 /* This relocation is like a PC-relative one, except the
1361 reference point is the location of GOT. Note that
1362 sgot->output_offset is not involved in this calculation. We
1363 always want the start of entire .got section, not the
1364 position after the reserved header. */
1365 relocation -= sgot->output_section->vma;
1366 break;
1367
1368 case R_CRIS_32_PLT_PCREL:
1369 /* Relocation is to the entry for this symbol in the
1370 procedure linkage table. */
1371
1372 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1373 without using the procedure linkage table. */
1374 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1375 break;
1376
1377 if (h->plt.offset == (bfd_vma) -1
1378 || splt == NULL)
1379 {
1380 /* We didn't make a PLT entry for this symbol. This
1381 happens when statically linking PIC code, or when
1382 using -Bsymbolic. */
1383 break;
1384 }
1385
1386 relocation = (splt->output_section->vma
1387 + splt->output_offset
1388 + h->plt.offset);
1389 break;
1390
1391 case R_CRIS_32_PLT_GOTREL:
1392 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1393 start of the .got section. See also comment at
1394 R_CRIS_32_GOT. */
1395 relocation -= sgot->output_section->vma;
1396
1397 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1398 without using the procedure linkage table. */
1399 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1400 break;
1401
1402 if (h->plt.offset == (bfd_vma) -1
1403 || splt == NULL)
1404 {
1405 /* We didn't make a PLT entry for this symbol. This
1406 happens when statically linking PIC code, or when
1407 using -Bsymbolic. */
1408 break;
1409 }
1410
1411 relocation = (splt->output_section->vma
1412 + splt->output_offset
1413 + h->plt.offset
1414 - sgot->output_section->vma);
1415 break;
1416
1417 case R_CRIS_8_PCREL:
1418 case R_CRIS_16_PCREL:
1419 case R_CRIS_32_PCREL:
1420 /* If the symbol was local, we need no shlib-specific handling. */
1421 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1422 || h->dynindx == -1)
1423 break;
1424
1425 /* Fall through. */
1426 case R_CRIS_8:
1427 case R_CRIS_16:
1428 case R_CRIS_32:
1429 if (info->shared
1430 && r_symndx != STN_UNDEF
1431 && (input_section->flags & SEC_ALLOC) != 0
1432 && ((r_type != R_CRIS_8_PCREL
1433 && r_type != R_CRIS_16_PCREL
1434 && r_type != R_CRIS_32_PCREL)
1435 || (!info->symbolic
1436 || (h != NULL && !h->def_regular))))
1437 {
1438 Elf_Internal_Rela outrel;
1439 bfd_byte *loc;
1440 bfd_boolean skip, relocate;
1441
1442 /* When generating a shared object, these relocations
1443 are copied into the output file to be resolved at run
1444 time. */
1445
1446 if (sreloc == NULL)
1447 {
1448 sreloc = _bfd_elf_get_dynamic_reloc_section
1449 (dynobj, input_section, /*rela?*/ TRUE);
1450 /* The section should have been created in cris_elf_check_relocs,
1451 but that function will not be called for objects which fail in
1452 cris_elf_merge_private_bfd_data. */
1453 if (sreloc == NULL)
1454 {
1455 bfd_set_error (bfd_error_bad_value);
1456 return FALSE;
1457 }
1458 }
1459
1460 skip = FALSE;
1461 relocate = FALSE;
1462
1463 outrel.r_offset =
1464 _bfd_elf_section_offset (output_bfd, info, input_section,
1465 rel->r_offset);
1466 if (outrel.r_offset == (bfd_vma) -1)
1467 skip = TRUE;
1468 else if (outrel.r_offset == (bfd_vma) -2
1469 /* For now, undefined weak symbols with non-default
1470 visibility (yielding 0), like exception info for
1471 discarded sections, will get a R_CRIS_NONE
1472 relocation rather than no relocation, because we
1473 notice too late that the symbol doesn't need a
1474 relocation. */
1475 || (h != NULL
1476 && h->root.type == bfd_link_hash_undefweak
1477 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1478 skip = TRUE, relocate = TRUE;
1479 outrel.r_offset += (input_section->output_section->vma
1480 + input_section->output_offset);
1481
1482 if (skip)
1483 memset (&outrel, 0, sizeof outrel);
1484 /* h->dynindx may be -1 if the symbol was marked to
1485 become local. */
1486 else if (h != NULL
1487 && ((! info->symbolic && h->dynindx != -1)
1488 || !h->def_regular))
1489 {
1490 BFD_ASSERT (h->dynindx != -1);
1491 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1492 outrel.r_addend = relocation + rel->r_addend;
1493 }
1494 else
1495 {
1496 outrel.r_addend = relocation + rel->r_addend;
1497
1498 if (r_type == R_CRIS_32)
1499 {
1500 relocate = TRUE;
1501 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1502 }
1503 else
1504 {
1505 long indx;
1506
1507 if (bfd_is_abs_section (sec))
1508 indx = 0;
1509 else if (sec == NULL || sec->owner == NULL)
1510 {
1511 bfd_set_error (bfd_error_bad_value);
1512 return FALSE;
1513 }
1514 else
1515 {
1516 asection *osec;
1517
1518 /* We are turning this relocation into one
1519 against a section symbol. It would be
1520 proper to subtract the symbol's value,
1521 osec->vma, from the emitted reloc addend,
1522 but ld.so expects buggy relocs. */
1523 osec = sec->output_section;
1524 indx = elf_section_data (osec)->dynindx;
1525 if (indx == 0)
1526 {
1527 osec = htab->root.text_index_section;
1528 indx = elf_section_data (osec)->dynindx;
1529 }
1530 BFD_ASSERT (indx != 0);
1531 }
1532
1533 outrel.r_info = ELF32_R_INFO (indx, r_type);
1534 }
1535 }
1536
1537 loc = sreloc->contents;
1538 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1539 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1540
1541 /* This reloc will be computed at runtime, so there's no
1542 need to do anything now, except for R_CRIS_32 relocations
1543 that have been turned into R_CRIS_RELATIVE. */
1544 if (!relocate)
1545 continue;
1546 }
1547
1548 break;
1549
1550 case R_CRIS_16_DTPREL:
1551 case R_CRIS_32_DTPREL:
1552 /* This relocation must only be performed against local
1553 symbols, or to sections that are not loadable. It's also
1554 ok when we link a program and the symbol is defined in an
1555 ordinary (non-DSO) object (if it's undefined there, we've
1556 already seen an error). */
1557 if (h != NULL
1558 && (input_section->flags & SEC_ALLOC) != 0
1559 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1560 && (info->shared
1561 || (!h->def_regular
1562 && h->root.type != bfd_link_hash_undefined)))
1563 {
1564 (*_bfd_error_handler)
1565 ((h->root.type == bfd_link_hash_undefined)
1566 /* We shouldn't get here for GCC-emitted code. */
1567 ? _("%B, section %A: relocation %s has an undefined"
1568 " reference to `%s', perhaps a declaration mixup?")
1569 : ("%B, section %A: relocation %s is"
1570 " not allowed for `%s', a global symbol with default"
1571 " visibility, perhaps a declaration mixup?"),
1572 input_bfd,
1573 input_section,
1574 cris_elf_howto_table[r_type].name,
1575 symname != NULL && symname[0] != '\0'
1576 ? symname : _("[whose name is lost]"));
1577 bfd_set_error (bfd_error_bad_value);
1578 return FALSE;
1579 }
1580
1581 BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1582 || htab->dtpmod_refcount != 0);
1583
1584 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1585 already done so. Note that we do this in .got.plt, not
1586 in .got, as .got.plt contains the first part, still the
1587 reloc is against .got, because the linker script directs
1588 (is required to direct) them both into .got. */
1589 if (htab->dtpmod_refcount > 0
1590 && (input_section->flags & SEC_ALLOC) != 0)
1591 {
1592 asection *sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
1593 BFD_ASSERT (sgotplt != NULL);
1594
1595 if (info->shared)
1596 {
1597 Elf_Internal_Rela outrel;
1598 bfd_byte *loc;
1599
1600 if (srelgot == NULL)
1601 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
1602 BFD_ASSERT (srelgot != NULL);
1603 loc = srelgot->contents;
1604 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1605
1606 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1607 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1608 outrel.r_offset = (sgotplt->output_section->vma
1609 + sgotplt->output_offset
1610 + 12);
1611 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1612 outrel.r_addend = 0;
1613 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1614 }
1615 else
1616 {
1617 /* For an executable, the GOT entry contents is known. */
1618 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1619 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1620 }
1621
1622 /* Reverse the sign to mark that we've emitted the
1623 required GOT entry. */
1624 htab->dtpmod_refcount = - htab->dtpmod_refcount;
1625 }
1626
1627 /* The relocation is the offset from the start of the module
1628 TLS block to the (local) symbol. */
1629 relocation -= elf_hash_table (info)->tls_sec == NULL
1630 ? 0 : elf_hash_table (info)->tls_sec->vma;
1631 break;
1632
1633 case R_CRIS_32_GD:
1634 if (info->shared)
1635 {
1636 bfd_set_error (bfd_error_invalid_operation);
1637
1638 /* We've already informed in cris_elf_check_relocs that
1639 this is an error. */
1640 return FALSE;
1641 }
1642 /* Fall through. */
1643
1644 case R_CRIS_16_GOT_GD:
1645 case R_CRIS_32_GOT_GD:
1646 if (rel->r_addend != 0)
1647 {
1648 /* We can't do anything for a relocation which is against a
1649 symbol *plus offset*. The GOT holds relocations for
1650 symbols. Make this an error; the compiler isn't allowed
1651 to pass us these kinds of things. */
1652 (*_bfd_error_handler)
1653 (_("%B, section %A: relocation %s with non-zero addend %d"
1654 " against symbol `%s'"),
1655 input_bfd,
1656 input_section,
1657 cris_elf_howto_table[r_type].name,
1658 rel->r_addend,
1659 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1660
1661 bfd_set_error (bfd_error_bad_value);
1662 return FALSE;
1663 }
1664
1665 if (!info->shared
1666 && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1667 {
1668 /* Known contents of the GOT. */
1669 bfd_vma off;
1670
1671 /* The symbol is defined in the program, so just write
1672 (1, known_tpoffset) into the GOT. */
1673 relocation -= elf_hash_table (info)->tls_sec->vma;
1674
1675 if (h != NULL)
1676 {
1677 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1678 ? h->got.offset + 4 : h->got.offset;
1679 }
1680 else
1681 {
1682 off = local_got_offsets[r_symndx];
1683 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1684 off += 4;
1685 }
1686
1687 /* We use bit 1 of the offset as a flag for GOT entry with
1688 the R_CRIS_DTP reloc, setting it when we've emitted the
1689 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1690 relocs. */
1691 if ((off & 2) == 0)
1692 {
1693 off &= ~3;
1694
1695 if (h != NULL)
1696 h->got.offset |= 2;
1697 else
1698 local_got_offsets[r_symndx] |= 2;
1699
1700 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1701 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1702 }
1703 else
1704 off &= ~3;
1705
1706 relocation = sgot->output_offset + off
1707 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1708 }
1709 else
1710 {
1711 /* Not all parts of the GOT entry are known; emit a real
1712 relocation. */
1713 bfd_vma off;
1714
1715 if (h != NULL)
1716 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1717 ? h->got.offset + 4 : h->got.offset;
1718 else
1719 {
1720 off = local_got_offsets[r_symndx];
1721 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1722 off += 4;
1723 }
1724
1725 /* See above re bit 1 and bit 0 usage. */
1726 if ((off & 2) == 0)
1727 {
1728 Elf_Internal_Rela outrel;
1729 bfd_byte *loc;
1730
1731 off &= ~3;
1732
1733 if (h != NULL)
1734 h->got.offset |= 2;
1735 else
1736 local_got_offsets[r_symndx] |= 2;
1737
1738 /* Clear the target contents of the GOT (just as a
1739 gesture; it's already cleared on allocation): this
1740 relocation is not like the other dynrelocs. */
1741 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1742 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1743
1744 if (srelgot == NULL)
1745 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
1746 BFD_ASSERT (srelgot != NULL);
1747
1748 if (h != NULL && h->dynindx != -1)
1749 {
1750 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1751 relocation = 0;
1752 }
1753 else
1754 {
1755 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1756
1757 /* NULL if we had an error. */
1758 relocation -= elf_hash_table (info)->tls_sec == NULL
1759 ? 0 : elf_hash_table (info)->tls_sec->vma;
1760 }
1761
1762 outrel.r_offset = (sgot->output_section->vma
1763 + sgot->output_offset
1764 + off);
1765 outrel.r_addend = relocation;
1766 loc = srelgot->contents;
1767 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1768
1769 /* NULL if we had an error. */
1770 if (srelgot->contents != NULL)
1771 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1772 }
1773 else
1774 off &= ~3;
1775
1776 relocation = sgot->output_offset + off
1777 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1778 }
1779
1780 /* The GOT-relative offset to the GOT entry is the
1781 relocation, or for R_CRIS_32_GD, the actual address of
1782 the GOT entry. */
1783 break;
1784
1785 case R_CRIS_32_IE:
1786 if (info->shared)
1787 {
1788 bfd_set_error (bfd_error_invalid_operation);
1789
1790 /* We've already informed in cris_elf_check_relocs that
1791 this is an error. */
1792 return FALSE;
1793 }
1794 /* Fall through. */
1795
1796 case R_CRIS_32_GOT_TPREL:
1797 case R_CRIS_16_GOT_TPREL:
1798 if (rel->r_addend != 0)
1799 {
1800 /* We can't do anything for a relocation which is
1801 against a symbol *plus offset*. GOT holds
1802 relocations for symbols. Make this an error; the
1803 compiler isn't allowed to pass us these kinds of
1804 things. */
1805 (*_bfd_error_handler)
1806 (_("%B, section %A: relocation %s with non-zero addend %d"
1807 " against symbol `%s'"),
1808 input_bfd,
1809 input_section,
1810 cris_elf_howto_table[r_type].name,
1811 rel->r_addend,
1812 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1813 bfd_set_error (bfd_error_bad_value);
1814 return FALSE;
1815 }
1816
1817 if (!info->shared
1818 && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1819 {
1820 /* Known contents of the GOT. */
1821 bfd_vma off;
1822
1823 /* The symbol is defined in the program, so just write
1824 the -prog_tls_size+known_tpoffset into the GOT. */
1825 relocation -= elf_hash_table (info)->tls_sec->vma;
1826 relocation -= elf_hash_table (info)->tls_size;
1827
1828 if (h != NULL)
1829 off = h->got.offset;
1830 else
1831 off = local_got_offsets[r_symndx];
1832
1833 /* Bit 0 is used to mark whether we've emitted the required
1834 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1835 is used similarly for R_CRIS_DTP, see above. */
1836 if ((off & 1) == 0)
1837 {
1838 off &= ~3;
1839
1840 if (h != NULL)
1841 h->got.offset |= 1;
1842 else
1843 local_got_offsets[r_symndx] |= 1;
1844
1845 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1846 }
1847 else
1848 off &= ~3;
1849
1850 relocation = sgot->output_offset + off
1851 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1852 }
1853 else
1854 {
1855 /* Emit a real relocation. */
1856 bfd_vma off;
1857
1858 if (h != NULL)
1859 off = h->got.offset;
1860 else
1861 off = local_got_offsets[r_symndx];
1862
1863 /* See above re usage of bit 0 and 1. */
1864 if ((off & 1) == 0)
1865 {
1866 Elf_Internal_Rela outrel;
1867 bfd_byte *loc;
1868
1869 off &= ~3;
1870
1871 if (h != NULL)
1872 h->got.offset |= 1;
1873 else
1874 local_got_offsets[r_symndx] |= 1;
1875
1876 if (srelgot == NULL)
1877 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
1878 BFD_ASSERT (srelgot != NULL);
1879
1880 if (h != NULL && h->dynindx != -1)
1881 {
1882 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1883 relocation = 0;
1884 }
1885 else
1886 {
1887 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1888
1889 /* NULL if we had an error. */
1890 relocation -= elf_hash_table (info)->tls_sec == NULL
1891 ? 0 : elf_hash_table (info)->tls_sec->vma;
1892 }
1893
1894 /* Just "define" the initial contents in some
1895 semi-logical way. */
1896 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1897
1898 outrel.r_offset = (sgot->output_section->vma
1899 + sgot->output_offset
1900 + off);
1901 outrel.r_addend = relocation;
1902 loc = srelgot->contents;
1903 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1904 /* NULL if we had an error. */
1905 if (srelgot->contents != NULL)
1906 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1907 }
1908 else
1909 off &= ~3;
1910
1911 relocation = sgot->output_offset + off
1912 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1913 }
1914
1915 /* The GOT-relative offset to the GOT entry is the relocation,
1916 or for R_CRIS_32_GD, the actual address of the GOT entry. */
1917 break;
1918
1919 case R_CRIS_16_TPREL:
1920 case R_CRIS_32_TPREL:
1921 /* This relocation must only be performed against symbols
1922 defined in an ordinary (non-DSO) object. */
1923 if (info->shared)
1924 {
1925 bfd_set_error (bfd_error_invalid_operation);
1926
1927 /* We've already informed in cris_elf_check_relocs that
1928 this is an error. */
1929 return FALSE;
1930 }
1931
1932 if (h != NULL
1933 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1934 && !(h->def_regular || ELF_COMMON_DEF_P (h))
1935 /* If it's undefined, then an error message has already
1936 been emitted. */
1937 && h->root.type != bfd_link_hash_undefined)
1938 {
1939 (*_bfd_error_handler)
1940 (_("%B, section %A: relocation %s is"
1941 " not allowed for symbol: `%s'"
1942 " which is defined outside the program,"
1943 " perhaps a declaration mixup?"),
1944 input_bfd,
1945 input_section,
1946 cris_elf_howto_table[r_type].name,
1947 symname);
1948 bfd_set_error (bfd_error_bad_value);
1949 return FALSE;
1950 }
1951
1952 /* NULL if we had an error. */
1953 relocation -= elf_hash_table (info)->tls_sec == NULL
1954 ? 0
1955 : (elf_hash_table (info)->tls_sec->vma
1956 + elf_hash_table (info)->tls_size);
1957
1958 /* The TLS-relative offset is the relocation. */
1959 break;
1960
1961 default:
1962 BFD_FAIL ();
1963 return FALSE;
1964 }
1965
1966 r = cris_final_link_relocate (howto, input_bfd, input_section,
1967 contents, rel, relocation);
1968
1969 if (r != bfd_reloc_ok)
1970 {
1971 const char * msg = (const char *) NULL;
1972
1973 switch (r)
1974 {
1975 case bfd_reloc_overflow:
1976 r = info->callbacks->reloc_overflow
1977 (info, (h ? &h->root : NULL), symname, howto->name,
1978 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1979 if (additional_relocation_error_msg_count > 0)
1980 {
1981 additional_relocation_error_msg_count--;
1982 switch (r_type)
1983 {
1984 case R_CRIS_16_GOTPLT:
1985 case R_CRIS_16_GOT:
1986
1987 /* Not just TLS is involved here, so we make
1988 generation and message depend on -fPIC/-fpic
1989 only. */
1990 case R_CRIS_16_GOT_TPREL:
1991 case R_CRIS_16_GOT_GD:
1992 (*_bfd_error_handler)
1993 (_("(too many global variables for -fpic:"
1994 " recompile with -fPIC)"));
1995 break;
1996
1997 case R_CRIS_16_TPREL:
1998 case R_CRIS_16_DTPREL:
1999 (*_bfd_error_handler)
2000 (_("(thread-local data too big for -fpic or"
2001 " -msmall-tls: recompile with -fPIC or"
2002 " -mno-small-tls)"));
2003 break;
2004
2005 /* No known cause for overflow for other relocs. */
2006 default:
2007 break;
2008 }
2009 }
2010 break;
2011
2012 case bfd_reloc_undefined:
2013 r = info->callbacks->undefined_symbol
2014 (info, symname, input_bfd, input_section, rel->r_offset,
2015 TRUE);
2016 break;
2017
2018 case bfd_reloc_outofrange:
2019 msg = _("internal error: out of range error");
2020 break;
2021
2022 case bfd_reloc_notsupported:
2023 msg = _("internal error: unsupported relocation error");
2024 break;
2025
2026 case bfd_reloc_dangerous:
2027 msg = _("internal error: dangerous relocation");
2028 break;
2029
2030 default:
2031 msg = _("internal error: unknown error");
2032 break;
2033 }
2034
2035 if (msg)
2036 r = info->callbacks->warning
2037 (info, msg, symname, input_bfd, input_section, rel->r_offset);
2038
2039 if (! r)
2040 return FALSE;
2041 }
2042 }
2043
2044 return TRUE;
2045 }
2046 \f
2047 /* Finish up dynamic symbol handling. We set the contents of various
2048 dynamic sections here. */
2049
2050 static bfd_boolean
2051 elf_cris_finish_dynamic_symbol (bfd *output_bfd,
2052 struct bfd_link_info *info,
2053 struct elf_link_hash_entry *h,
2054 Elf_Internal_Sym *sym)
2055 {
2056 struct elf_cris_link_hash_table * htab;
2057 bfd *dynobj;
2058
2059 /* Where in the plt entry to put values. */
2060 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2061
2062 /* What offset to add to the distance to the first PLT entry for the
2063 value at plt_off3. */
2064 int plt_off3_value_bias = 4;
2065
2066 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2067 for PIC and non-PIC for v32 and pre-v32). */
2068 int plt_stub_offset = 8;
2069 int plt_entry_size = PLT_ENTRY_SIZE;
2070 const bfd_byte *plt_entry = elf_cris_plt_entry;
2071 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2072
2073 htab = elf_cris_hash_table (info);
2074 if (htab == NULL)
2075 return FALSE;
2076
2077 /* Adjust the various PLT entry offsets. */
2078 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2079 {
2080 plt_off2 = 14;
2081 plt_off3 = 20;
2082 plt_off3_value_bias = -2;
2083 plt_stub_offset = 12;
2084 plt_entry_size = PLT_ENTRY_SIZE_V32;
2085 plt_entry = elf_cris_plt_entry_v32;
2086 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2087 }
2088
2089 dynobj = elf_hash_table (info)->dynobj;
2090
2091 if (h->plt.offset != (bfd_vma) -1)
2092 {
2093 asection *splt;
2094 asection *sgotplt;
2095 asection *srela;
2096 bfd_vma got_base;
2097
2098 bfd_vma gotplt_offset
2099 = elf_cris_hash_entry (h)->gotplt_offset;
2100 Elf_Internal_Rela rela;
2101 bfd_byte *loc;
2102 bfd_boolean has_gotplt = gotplt_offset != 0;
2103
2104 /* Get the index in the .rela.plt relocations for the .got.plt
2105 entry that corresponds to this symbol.
2106 We have to count backwards here, and the result is only valid
2107 as an index into .rela.plt. We also have to undo the effect
2108 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2109 .got.plt) for which gotplt_offset is adjusted, because while
2110 that entry goes into .got.plt, its relocation goes into
2111 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2112 processed as part of the runtime lazy .rela.plt relocation).
2113 FIXME: There be literal constants here... */
2114 bfd_vma rela_plt_index
2115 = (htab->dtpmod_refcount != 0
2116 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2117
2118 /* Get the offset into the .got table of the entry that corresponds
2119 to this function. Note that we embed knowledge that "incoming"
2120 .got goes after .got.plt in the output without padding (pointer
2121 aligned). However, that knowledge is present in several other
2122 places too. */
2123 bfd_vma got_offset
2124 = (has_gotplt
2125 ? gotplt_offset
2126 : h->got.offset + htab->next_gotplt_entry);
2127
2128 /* This symbol has an entry in the procedure linkage table. Set it
2129 up. */
2130
2131 BFD_ASSERT (h->dynindx != -1);
2132
2133 splt = bfd_get_linker_section (dynobj, ".plt");
2134 sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
2135 srela = bfd_get_linker_section (dynobj, ".rela.plt");
2136 BFD_ASSERT (splt != NULL && sgotplt != NULL
2137 && (! has_gotplt || srela != NULL));
2138
2139 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2140
2141 /* Fill in the entry in the procedure linkage table. */
2142 if (! info->shared)
2143 {
2144 memcpy (splt->contents + h->plt.offset, plt_entry,
2145 plt_entry_size);
2146
2147 /* We need to enter the absolute address of the GOT entry here. */
2148 bfd_put_32 (output_bfd, got_base + got_offset,
2149 splt->contents + h->plt.offset + plt_off1);
2150 }
2151 else
2152 {
2153 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2154 plt_entry_size);
2155 bfd_put_32 (output_bfd, got_offset,
2156 splt->contents + h->plt.offset + plt_off1);
2157 }
2158
2159 /* Fill in the plt entry and make a relocation, if this is a "real"
2160 PLT entry. */
2161 if (has_gotplt)
2162 {
2163 /* Fill in the offset to the reloc table. */
2164 bfd_put_32 (output_bfd,
2165 rela_plt_index * sizeof (Elf32_External_Rela),
2166 splt->contents + h->plt.offset + plt_off2);
2167
2168 /* Fill in the offset to the first PLT entry, where to "jump". */
2169 bfd_put_32 (output_bfd,
2170 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2171 splt->contents + h->plt.offset + plt_off3);
2172
2173 /* Fill in the entry in the global offset table with the address of
2174 the relocating stub. */
2175 bfd_put_32 (output_bfd,
2176 (splt->output_section->vma
2177 + splt->output_offset
2178 + h->plt.offset
2179 + plt_stub_offset),
2180 sgotplt->contents + got_offset);
2181
2182 /* Fill in the entry in the .rela.plt section. */
2183 rela.r_offset = (sgotplt->output_section->vma
2184 + sgotplt->output_offset
2185 + got_offset);
2186 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2187 rela.r_addend = 0;
2188 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2189 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2190 }
2191
2192 if (!h->def_regular)
2193 {
2194 /* Mark the symbol as undefined, rather than as defined in
2195 the .plt section. Leave the value alone. */
2196 sym->st_shndx = SHN_UNDEF;
2197
2198 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2199 know whether resetting the value is significant; if it really
2200 is, rather than a quirk or bug in the sparc port, then I
2201 believe we'd see this elsewhere. */
2202 /* If the symbol is weak, we do need to clear the value.
2203 Otherwise, the PLT entry would provide a definition for
2204 the symbol even if the symbol wasn't defined anywhere,
2205 and so the symbol would never be NULL. */
2206 if (!h->ref_regular_nonweak)
2207 sym->st_value = 0;
2208 }
2209 }
2210
2211 /* For an ordinary program, we emit .got relocs only for symbols that
2212 are in the dynamic-symbols table and are either defined by the
2213 program or are undefined weak symbols, or are function symbols
2214 where we do not output a PLT: the PLT reloc was output above and all
2215 references to the function symbol are redirected to the PLT. */
2216 if (h->got.offset != (bfd_vma) -1
2217 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2218 && (info->shared
2219 || (h->dynindx != -1
2220 && h->plt.offset == (bfd_vma) -1
2221 && !h->def_regular
2222 && h->root.type != bfd_link_hash_undefweak)))
2223 {
2224 asection *sgot;
2225 asection *srela;
2226 Elf_Internal_Rela rela;
2227 bfd_byte *loc;
2228 bfd_byte *where;
2229
2230 /* This symbol has an entry in the global offset table. Set it up. */
2231
2232 sgot = bfd_get_linker_section (dynobj, ".got");
2233 srela = bfd_get_linker_section (dynobj, ".rela.got");
2234 BFD_ASSERT (sgot != NULL && srela != NULL);
2235
2236 rela.r_offset = (sgot->output_section->vma
2237 + sgot->output_offset
2238 + (h->got.offset &~ (bfd_vma) 1));
2239
2240 /* If this is a static link, or it is a -Bsymbolic link and the
2241 symbol is defined locally or was forced to be local because
2242 of a version file, we just want to emit a RELATIVE reloc.
2243 The entry in the global offset table will already have been
2244 initialized in the relocate_section function. */
2245 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2246 if (! elf_hash_table (info)->dynamic_sections_created
2247 || (info->shared
2248 && (info->symbolic || h->dynindx == -1)
2249 && h->def_regular))
2250 {
2251 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2252 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2253 }
2254 else
2255 {
2256 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2257 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2258 rela.r_addend = 0;
2259 }
2260
2261 loc = srela->contents;
2262 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2263 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2264 }
2265
2266 if (h->needs_copy)
2267 {
2268 asection *s;
2269 Elf_Internal_Rela rela;
2270 bfd_byte *loc;
2271
2272 /* This symbol needs a copy reloc. Set it up. */
2273
2274 BFD_ASSERT (h->dynindx != -1
2275 && (h->root.type == bfd_link_hash_defined
2276 || h->root.type == bfd_link_hash_defweak));
2277
2278 s = bfd_get_linker_section (dynobj, ".rela.bss");
2279 BFD_ASSERT (s != NULL);
2280
2281 rela.r_offset = (h->root.u.def.value
2282 + h->root.u.def.section->output_section->vma
2283 + h->root.u.def.section->output_offset);
2284 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2285 rela.r_addend = 0;
2286 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2287 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2288 }
2289
2290 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2291 if (h == elf_hash_table (info)->hdynamic
2292 || h == elf_hash_table (info)->hgot)
2293 sym->st_shndx = SHN_ABS;
2294
2295 return TRUE;
2296 }
2297 \f
2298 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2299 offsets were changed, as part of -z combreloc handling, from those we
2300 computed. */
2301
2302 static bfd_boolean
2303 elf_cris_finish_dynamic_sections (bfd *output_bfd,
2304 struct bfd_link_info *info)
2305 {
2306 bfd *dynobj;
2307 asection *sgot;
2308 asection *sdyn;
2309
2310 dynobj = elf_hash_table (info)->dynobj;
2311
2312 sgot = bfd_get_linker_section (dynobj, ".got.plt");
2313 BFD_ASSERT (sgot != NULL);
2314 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
2315
2316 if (elf_hash_table (info)->dynamic_sections_created)
2317 {
2318 asection *splt;
2319 Elf32_External_Dyn *dyncon, *dynconend;
2320
2321 splt = bfd_get_linker_section (dynobj, ".plt");
2322 BFD_ASSERT (splt != NULL && sdyn != NULL);
2323
2324 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2325 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2326 for (; dyncon < dynconend; dyncon++)
2327 {
2328 Elf_Internal_Dyn dyn;
2329 asection *s;
2330
2331 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2332
2333 switch (dyn.d_tag)
2334 {
2335 default:
2336 break;
2337
2338 case DT_PLTGOT:
2339 s = bfd_get_section_by_name (output_bfd, ".got");
2340 BFD_ASSERT (s != NULL);
2341 dyn.d_un.d_ptr = s->vma;
2342 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2343 break;
2344
2345 case DT_JMPREL:
2346 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2347 if all symbols are found in the .got (not .got.plt). */
2348 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2349 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2350 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2351 break;
2352
2353 case DT_PLTRELSZ:
2354 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2355 if (s == NULL)
2356 dyn.d_un.d_val = 0;
2357 else
2358 dyn.d_un.d_val = s->size;
2359 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2360 break;
2361
2362 case DT_RELASZ:
2363 /* The procedure linkage table relocs (DT_JMPREL) should
2364 not be included in the overall relocs (DT_RELA).
2365 Therefore, we override the DT_RELASZ entry here to
2366 make it not include the JMPREL relocs. Since the
2367 linker script arranges for .rela.plt to follow all
2368 other relocation sections, we don't have to worry
2369 about changing the DT_RELA entry. */
2370 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2371 if (s != NULL)
2372 dyn.d_un.d_val -= s->size;
2373 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2374 break;
2375 }
2376 }
2377
2378 /* Fill in the first entry in the procedure linkage table. */
2379 if (splt->size > 0)
2380 {
2381 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2382 {
2383 if (info->shared)
2384 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2385 PLT_ENTRY_SIZE_V32);
2386 else
2387 {
2388 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2389 PLT_ENTRY_SIZE_V32);
2390 bfd_put_32 (output_bfd,
2391 sgot->output_section->vma
2392 + sgot->output_offset + 4,
2393 splt->contents + 4);
2394
2395 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2396 = PLT_ENTRY_SIZE_V32;
2397 }
2398 }
2399 else
2400 {
2401 if (info->shared)
2402 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2403 PLT_ENTRY_SIZE);
2404 else
2405 {
2406 memcpy (splt->contents, elf_cris_plt0_entry,
2407 PLT_ENTRY_SIZE);
2408 bfd_put_32 (output_bfd,
2409 sgot->output_section->vma
2410 + sgot->output_offset + 4,
2411 splt->contents + 6);
2412 bfd_put_32 (output_bfd,
2413 sgot->output_section->vma
2414 + sgot->output_offset + 8,
2415 splt->contents + 14);
2416
2417 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2418 = PLT_ENTRY_SIZE;
2419 }
2420 }
2421 }
2422 }
2423
2424 /* Fill in the first three entries in the global offset table. */
2425 if (sgot->size > 0)
2426 {
2427 if (sdyn == NULL)
2428 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2429 else
2430 bfd_put_32 (output_bfd,
2431 sdyn->output_section->vma + sdyn->output_offset,
2432 sgot->contents);
2433 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2434 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2435 }
2436
2437 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2438
2439 return TRUE;
2440 }
2441 \f
2442 /* Return the section that should be marked against GC for a given
2443 relocation. */
2444
2445 static asection *
2446 cris_elf_gc_mark_hook (asection *sec,
2447 struct bfd_link_info *info,
2448 Elf_Internal_Rela *rel,
2449 struct elf_link_hash_entry *h,
2450 Elf_Internal_Sym *sym)
2451 {
2452 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2453 if (h != NULL)
2454 switch (r_type)
2455 {
2456 case R_CRIS_GNU_VTINHERIT:
2457 case R_CRIS_GNU_VTENTRY:
2458 return NULL;
2459
2460 default:
2461 break;
2462 }
2463
2464 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2465 }
2466
2467 /* Update the got entry reference counts for the section being removed. */
2468
2469 static bfd_boolean
2470 cris_elf_gc_sweep_hook (bfd *abfd,
2471 struct bfd_link_info *info,
2472 asection *sec,
2473 const Elf_Internal_Rela *relocs)
2474 {
2475 struct elf_cris_link_hash_table * htab;
2476 Elf_Internal_Shdr *symtab_hdr;
2477 struct elf_link_hash_entry **sym_hashes;
2478 bfd_signed_vma *local_got_refcounts;
2479 const Elf_Internal_Rela *rel, *relend;
2480 bfd *dynobj;
2481 asection *sgot;
2482 asection *srelgot;
2483
2484 if (info->relocatable)
2485 return TRUE;
2486
2487 dynobj = elf_hash_table (info)->dynobj;
2488 if (dynobj == NULL)
2489 return TRUE;
2490
2491 htab = elf_cris_hash_table (info);
2492 if (htab == NULL)
2493 return FALSE;
2494
2495 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2496 sym_hashes = elf_sym_hashes (abfd);
2497 local_got_refcounts = elf_local_got_refcounts (abfd);
2498
2499 sgot = bfd_get_linker_section (dynobj, ".got");
2500 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
2501
2502 relend = relocs + sec->reloc_count;
2503 for (rel = relocs; rel < relend; rel++)
2504 {
2505 unsigned long r_symndx;
2506 struct elf_link_hash_entry *h = NULL;
2507 bfd_signed_vma got_element_size = 4;
2508 bfd_signed_vma *specific_refcount = NULL;
2509 enum elf_cris_reloc_type r_type;
2510
2511 r_symndx = ELF32_R_SYM (rel->r_info);
2512 if (r_symndx >= symtab_hdr->sh_info)
2513 {
2514 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2515 while (h->root.type == bfd_link_hash_indirect
2516 || h->root.type == bfd_link_hash_warning)
2517 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2518 }
2519
2520 r_type = ELF32_R_TYPE (rel->r_info);
2521 switch (r_type)
2522 {
2523 case R_CRIS_32_GOT:
2524 case R_CRIS_16_GOT:
2525 case R_CRIS_16_GOTPLT:
2526 case R_CRIS_32_GOTPLT:
2527 specific_refcount = h != NULL
2528 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2529 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2530 break;
2531
2532 case R_CRIS_32_GD:
2533 case R_CRIS_32_GOT_GD:
2534 case R_CRIS_16_GOT_GD:
2535 got_element_size = 8;
2536 specific_refcount = h != NULL
2537 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2538 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2539 break;
2540
2541 case R_CRIS_32_IE:
2542 case R_CRIS_16_GOT_TPREL:
2543 case R_CRIS_32_GOT_TPREL:
2544 specific_refcount = h != NULL
2545 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2546 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2547 break;
2548
2549 default:
2550 break;
2551 }
2552
2553 switch (r_type)
2554 {
2555 case R_CRIS_32_IE:
2556 case R_CRIS_32_GD:
2557 case R_CRIS_16_GOT_TPREL:
2558 case R_CRIS_32_GOT_TPREL:
2559 case R_CRIS_32_GOT_GD:
2560 case R_CRIS_16_GOT_GD:
2561 case R_CRIS_16_GOT:
2562 case R_CRIS_32_GOT:
2563 if (h != NULL)
2564 {
2565 /* If the counters are 0 when we got here, we've
2566 miscounted somehow somewhere, an internal error. */
2567 BFD_ASSERT (h->got.refcount > 0);
2568 --h->got.refcount;
2569
2570 BFD_ASSERT (*specific_refcount > 0);
2571 --*specific_refcount;
2572 if (*specific_refcount == 0)
2573 {
2574 /* We don't need the .got entry any more. */
2575 sgot->size -= got_element_size;
2576 srelgot->size -= sizeof (Elf32_External_Rela);
2577 }
2578 break;
2579 }
2580
2581 local_got_reloc:
2582 if (local_got_refcounts != NULL)
2583 {
2584 /* If the counters are 0 when we got here, we've
2585 miscounted somehow somewhere, an internal error. */
2586 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2587 --local_got_refcounts[r_symndx];
2588
2589 BFD_ASSERT (*specific_refcount > 0);
2590 --*specific_refcount;
2591 if (*specific_refcount == 0)
2592 {
2593 /* We don't need the .got entry any more. */
2594 sgot->size -= got_element_size;
2595 if (info->shared)
2596 srelgot->size -= sizeof (Elf32_External_Rela);
2597 }
2598 }
2599 break;
2600
2601 case R_CRIS_16_GOTPLT:
2602 case R_CRIS_32_GOTPLT:
2603 /* For local symbols, treat these like GOT relocs. */
2604 if (h == NULL)
2605 goto local_got_reloc;
2606 else
2607 /* For global symbols, adjust the reloc-specific refcount. */
2608 elf_cris_hash_entry (h)->gotplt_refcount--;
2609 /* Fall through. */
2610
2611 case R_CRIS_32_PLT_GOTREL:
2612 /* FIXME: We don't garbage-collect away the .got section. */
2613 if (local_got_refcounts != NULL)
2614 local_got_refcounts[-1]--;
2615 /* Fall through. */
2616
2617 case R_CRIS_8:
2618 case R_CRIS_16:
2619 case R_CRIS_32:
2620 case R_CRIS_8_PCREL:
2621 case R_CRIS_16_PCREL:
2622 case R_CRIS_32_PCREL:
2623 case R_CRIS_32_PLT_PCREL:
2624 /* Negate the increment we did in cris_elf_check_relocs. */
2625 if (h != NULL)
2626 {
2627 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2628 && h->plt.refcount > 0)
2629 --h->plt.refcount;
2630 }
2631 break;
2632
2633 case R_CRIS_32_DTPREL:
2634 /* This'd be a .dtpreld entry in e.g. debug info. */
2635 if ((sec->flags & SEC_ALLOC) == 0)
2636 break;
2637 /* Fall through. */
2638 case R_CRIS_16_DTPREL:
2639 htab->dtpmod_refcount--;
2640 if (htab->dtpmod_refcount == 0)
2641 htab->next_gotplt_entry -= 8;
2642 BFD_ASSERT (local_got_refcounts != NULL);
2643 local_got_refcounts[-1]--;
2644 break;
2645
2646 default:
2647 break;
2648 }
2649 }
2650
2651 return TRUE;
2652 }
2653
2654 /* The elf_backend_plt_sym_val hook function. */
2655
2656 static bfd_vma
2657 cris_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, const asection *plt,
2658 const arelent *rel)
2659 {
2660 bfd_size_type plt_entry_size;
2661 bfd_size_type pltoffs;
2662 bfd *abfd = plt->owner;
2663
2664 /* Same for CRIS and CRIS v32; see elf_cris_(|pic_)plt_entry(|_v32)[]. */
2665 bfd_size_type plt_entry_got_offset = 2;
2666 bfd_size_type plt_sec_size;
2667 bfd_size_type got_vma_for_dyn;
2668 asection *got;
2669
2670 /* FIXME: the .got section should be readily available also when
2671 we're not linking. */
2672 if ((got = bfd_get_section_by_name (abfd, ".got")) == NULL)
2673 return (bfd_vma) -1;
2674
2675 plt_sec_size = bfd_section_size (plt->owner, plt);
2676 plt_entry_size
2677 = (bfd_get_mach (abfd) == bfd_mach_cris_v32
2678 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2679
2680 /* Data in PLT is GOT-relative for DYN, but absolute for EXE. */
2681 got_vma_for_dyn = (abfd->flags & EXEC_P) ? 0 : got->vma;
2682
2683 /* Because we can have merged GOT entries; a single .got entry for
2684 both GOT and the PLT part of the GOT (.got.plt), the index of the
2685 reloc in .rela.plt is not the same as the index in the PLT.
2686 Instead, we have to hunt down the GOT offset in the PLT that
2687 corresponds to that of this reloc. Unfortunately, we will only
2688 be called for the .rela.plt relocs, so we'll miss synthetic
2689 symbols for .plt entries with merged GOT entries. (FIXME:
2690 fixable by providing our own bfd_elf32_get_synthetic_symtab.
2691 Doesn't seem worthwile at time of this writing.) FIXME: we've
2692 gone from O(1) to O(N) (N number of PLT entries) for finding each
2693 PLT address. Shouldn't matter in practice though. */
2694
2695 for (pltoffs = plt_entry_size;
2696 pltoffs < plt_sec_size;
2697 pltoffs += plt_entry_size)
2698 {
2699 bfd_size_type got_offset;
2700 bfd_byte gotoffs_raw[4];
2701
2702 if (!bfd_get_section_contents (abfd, (asection *) plt, gotoffs_raw,
2703 pltoffs + plt_entry_got_offset,
2704 sizeof (gotoffs_raw)))
2705 return (bfd_vma) -1;
2706
2707 got_offset = bfd_get_32 (abfd, gotoffs_raw);
2708 if (got_offset + got_vma_for_dyn == rel->address)
2709 return plt->vma + pltoffs;
2710 }
2711
2712 /* While it's tempting to BFD_ASSERT that we shouldn't get here,
2713 that'd not be graceful behavior for invalid input. */
2714 return (bfd_vma) -1;
2715 }
2716
2717 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2718 entry but we found we will not create any. Called when we find we will
2719 not have any PLT for this symbol, by for example
2720 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2721 or elf_cris_size_dynamic_sections if no dynamic sections will be
2722 created (we're only linking static objects). */
2723
2724 static bfd_boolean
2725 elf_cris_adjust_gotplt_to_got (struct elf_cris_link_hash_entry *h, void * p)
2726 {
2727 struct bfd_link_info *info = (struct bfd_link_info *) p;
2728
2729 /* A GOTPLT reloc, when activated, is supposed to be included into
2730 the PLT refcount. */
2731 BFD_ASSERT (h->gotplt_refcount == 0
2732 || h->gotplt_refcount <= h->root.plt.refcount);
2733
2734 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2735 if (h->gotplt_refcount <= 0)
2736 return TRUE;
2737
2738 if (h->reg_got_refcount > 0)
2739 {
2740 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2741 Probably not necessary at this stage, but keeping them accurate
2742 helps avoiding surprises later. */
2743 h->root.got.refcount += h->gotplt_refcount;
2744 h->reg_got_refcount += h->gotplt_refcount;
2745 h->gotplt_refcount = 0;
2746 }
2747 else
2748 {
2749 /* No GOT entry for this symbol. We need to create one. */
2750 bfd *dynobj = elf_hash_table (info)->dynobj;
2751 asection *sgot;
2752 asection *srelgot;
2753
2754 BFD_ASSERT (dynobj != NULL);
2755 sgot = bfd_get_linker_section (dynobj, ".got");
2756 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
2757
2758 /* Put accurate refcounts there. */
2759 h->root.got.refcount += h->gotplt_refcount;
2760 h->reg_got_refcount = h->gotplt_refcount;
2761
2762 h->gotplt_refcount = 0;
2763
2764 /* We always have a .got and a .rela.got section if there were
2765 GOTPLT relocs in input. */
2766 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2767
2768 /* Allocate space in the .got section. */
2769 sgot->size += 4;
2770
2771 /* Allocate relocation space. */
2772 srelgot->size += sizeof (Elf32_External_Rela);
2773 }
2774
2775 return TRUE;
2776 }
2777
2778 /* Try to fold PLT entries with GOT entries. There are two cases when we
2779 want to do this:
2780
2781 - When all PLT references are GOTPLT references, and there are GOT
2782 references, and this is not the executable. We don't have to
2783 generate a PLT at all.
2784
2785 - When there are both (ordinary) PLT references and GOT references,
2786 and this isn't the executable.
2787 We want to make the PLT reference use the ordinary GOT entry rather
2788 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2789 since the GOT entry will have to be resolved at startup anyway.
2790
2791 Though the latter case is handled when room for the PLT is allocated,
2792 not here.
2793
2794 By folding into the GOT, we may need a round-trip to a PLT in the
2795 executable for calls, a loss in performance. Still, losing a
2796 reloc is a win in size and at least in start-up time.
2797
2798 Note that this function is called before symbols are forced local by
2799 version scripts. The differing cases are handled by
2800 elf_cris_hide_symbol. */
2801
2802 static bfd_boolean
2803 elf_cris_try_fold_plt_to_got (struct elf_cris_link_hash_entry *h, void * p)
2804 {
2805 struct bfd_link_info *info = (struct bfd_link_info *) p;
2806
2807 /* If there are no GOT references for this symbol, we can't fold any
2808 other reference so there's nothing to do. Likewise if there are no
2809 PLT references; GOTPLT references included. */
2810 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2811 return TRUE;
2812
2813 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2814 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2815
2816 if (h->gotplt_refcount == h->root.plt.refcount)
2817 {
2818 /* The only PLT references are GOTPLT references, and there are GOT
2819 references. Convert PLT to GOT references. */
2820 if (! elf_cris_adjust_gotplt_to_got (h, info))
2821 return FALSE;
2822
2823 /* Clear the PLT references, so no PLT will be created. */
2824 h->root.plt.offset = (bfd_vma) -1;
2825 }
2826
2827 return TRUE;
2828 }
2829
2830 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2831 to use a GOT entry (and create one) rather than requiring a GOTPLT
2832 entry. */
2833
2834 static void
2835 elf_cris_hide_symbol (struct bfd_link_info *info,
2836 struct elf_link_hash_entry *h,
2837 bfd_boolean force_local)
2838 {
2839 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2840
2841 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2842 }
2843
2844 /* Adjust a symbol defined by a dynamic object and referenced by a
2845 regular object. The current definition is in some section of the
2846 dynamic object, but we're not including those sections. We have to
2847 change the definition to something the rest of the link can
2848 understand. */
2849
2850 static bfd_boolean
2851 elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info,
2852 struct elf_link_hash_entry *h)
2853 {
2854 struct elf_cris_link_hash_table * htab;
2855 bfd *dynobj;
2856 asection *s;
2857 bfd_size_type plt_entry_size;
2858
2859 htab = elf_cris_hash_table (info);
2860 if (htab == NULL)
2861 return FALSE;
2862
2863 dynobj = elf_hash_table (info)->dynobj;
2864
2865 /* Make sure we know what is going on here. */
2866 BFD_ASSERT (dynobj != NULL
2867 && (h->needs_plt
2868 || h->u.weakdef != NULL
2869 || (h->def_dynamic
2870 && h->ref_regular
2871 && !h->def_regular)));
2872
2873 plt_entry_size
2874 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2875 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2876
2877 /* If this is a function, put it in the procedure linkage table. We
2878 will fill in the contents of the procedure linkage table later,
2879 when we know the address of the .got section. */
2880 if (h->type == STT_FUNC
2881 || h->needs_plt)
2882 {
2883 /* If we link a program (not a DSO), we'll get rid of unnecessary
2884 PLT entries; we point to the actual symbols -- even for pic
2885 relocs, because a program built with -fpic should have the same
2886 result as one built without -fpic, specifically considering weak
2887 symbols.
2888 FIXME: m68k and i386 differ here, for unclear reasons. */
2889 if (! info->shared
2890 && !h->def_dynamic)
2891 {
2892 /* This case can occur if we saw a PLT reloc in an input file,
2893 but the symbol was not defined by a dynamic object. In such
2894 a case, we don't actually need to build a procedure linkage
2895 table, and we can just do an absolute or PC reloc instead, or
2896 change a .got.plt index to a .got index for GOTPLT relocs. */
2897 BFD_ASSERT (h->needs_plt);
2898 h->needs_plt = 0;
2899 h->plt.offset = (bfd_vma) -1;
2900 return
2901 elf_cris_adjust_gotplt_to_got ((struct
2902 elf_cris_link_hash_entry *) h,
2903 info);
2904 }
2905
2906 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2907 where a pointer-equivalent symbol was unimportant (i.e. more
2908 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2909 of the PLT. We can't for the executable, because the GOT
2910 entries will point to the PLT there (and be constant). */
2911 if (info->shared
2912 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2913 h, info))
2914 return FALSE;
2915
2916 /* GC or folding may have rendered this entry unused. */
2917 if (h->plt.refcount <= 0)
2918 {
2919 h->needs_plt = 0;
2920 h->plt.offset = (bfd_vma) -1;
2921 return TRUE;
2922 }
2923
2924 /* Make sure this symbol is output as a dynamic symbol. */
2925 if (h->dynindx == -1)
2926 {
2927 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2928 return FALSE;
2929 }
2930
2931 s = bfd_get_linker_section (dynobj, ".plt");
2932 BFD_ASSERT (s != NULL);
2933
2934 /* If this is the first .plt entry, make room for the special
2935 first entry. */
2936 if (s->size == 0)
2937 s->size += plt_entry_size;
2938
2939 /* If this symbol is not defined in a regular file, and we are
2940 not generating a shared library, then set the symbol to this
2941 location in the .plt. */
2942 if (!info->shared
2943 && !h->def_regular)
2944 {
2945 h->root.u.def.section = s;
2946 h->root.u.def.value = s->size;
2947 }
2948
2949 /* If there's already a GOT entry, use that, not a .got.plt. A
2950 GOT field still has a reference count when we get here; it's
2951 not yet changed to an offset. We can't do this for an
2952 executable, because then the reloc associated with the PLT
2953 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2954 this to elf_cris_try_fold_plt_to_got. */
2955 if (info->shared && h->got.refcount > 0)
2956 {
2957 h->got.refcount += h->plt.refcount;
2958
2959 /* Mark the PLT offset to use the GOT entry by setting the low
2960 bit in the plt offset; it is always a multiple of
2961 plt_entry_size (which is at least a multiple of 2). */
2962 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2963
2964 /* Change the PLT refcount to an offset. */
2965 h->plt.offset = s->size;
2966
2967 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2968 that the got entry should be used instead. */
2969 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2970 h)->gotplt_offset == 0);
2971
2972 /* Make room for this entry. */
2973 s->size += plt_entry_size;
2974
2975 return TRUE;
2976 }
2977
2978 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2979 h->plt.offset = s->size;
2980
2981 /* Make room for this entry. */
2982 s->size += plt_entry_size;
2983
2984 /* We also need to make an entry in the .got.plt section, which
2985 will be placed in the .got section by the linker script. */
2986 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2987 = htab->next_gotplt_entry;
2988 htab->next_gotplt_entry += 4;
2989
2990 s = bfd_get_linker_section (dynobj, ".got.plt");
2991 BFD_ASSERT (s != NULL);
2992 s->size += 4;
2993
2994 /* We also need to make an entry in the .rela.plt section. */
2995
2996 s = bfd_get_linker_section (dynobj, ".rela.plt");
2997 BFD_ASSERT (s != NULL);
2998 s->size += sizeof (Elf32_External_Rela);
2999
3000 return TRUE;
3001 }
3002
3003 /* Reinitialize the plt offset now that it is not used as a reference
3004 count any more. */
3005 h->plt.offset = (bfd_vma) -1;
3006
3007 /* If this is a weak symbol, and there is a real definition, the
3008 processor independent code will have arranged for us to see the
3009 real definition first, and we can just use the same value. */
3010 if (h->u.weakdef != NULL)
3011 {
3012 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3013 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3014 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3015 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3016 return TRUE;
3017 }
3018
3019 /* This is a reference to a symbol defined by a dynamic object which
3020 is not a function. */
3021
3022 /* If we are creating a shared library, we must presume that the
3023 only references to the symbol are via the global offset table.
3024 For such cases we need not do anything here; the relocations will
3025 be handled correctly by relocate_section. */
3026 if (info->shared)
3027 return TRUE;
3028
3029 /* If there are no references to this symbol that do not use the
3030 GOT, we don't need to generate a copy reloc. */
3031 if (!h->non_got_ref)
3032 return TRUE;
3033
3034 /* We must allocate the symbol in our .dynbss section, which will
3035 become part of the .bss section of the executable. There will be
3036 an entry for this symbol in the .dynsym section. The dynamic
3037 object will contain position independent code, so all references
3038 from the dynamic object to this symbol will go through the global
3039 offset table. The dynamic linker will use the .dynsym entry to
3040 determine the address it must put in the global offset table, so
3041 both the dynamic object and the regular object will refer to the
3042 same memory location for the variable. */
3043
3044 s = bfd_get_linker_section (dynobj, ".dynbss");
3045 BFD_ASSERT (s != NULL);
3046
3047 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3048 copy the initial value out of the dynamic object and into the
3049 runtime process image. We need to remember the offset into the
3050 .rela.bss section we are going to use. */
3051 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
3052 {
3053 asection *srel;
3054
3055 srel = bfd_get_linker_section (dynobj, ".rela.bss");
3056 BFD_ASSERT (srel != NULL);
3057 srel->size += sizeof (Elf32_External_Rela);
3058 h->needs_copy = 1;
3059 }
3060
3061 return _bfd_elf_adjust_dynamic_copy (h, s);
3062 }
3063
3064 /* Adjust our "subclass" elements for an indirect symbol. */
3065
3066 static void
3067 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3068 struct elf_link_hash_entry *dir,
3069 struct elf_link_hash_entry *ind)
3070 {
3071 struct elf_cris_link_hash_entry *edir, *eind;
3072
3073 edir = (struct elf_cris_link_hash_entry *) dir;
3074 eind = (struct elf_cris_link_hash_entry *) ind;
3075
3076 /* Only indirect symbols are replaced; we're not interested in
3077 updating any of EIND's fields for other symbols. */
3078 if (eind->root.root.type != bfd_link_hash_indirect)
3079 {
3080 /* Still, we need to copy flags for e.g. weak definitions. */
3081 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3082 return;
3083 }
3084
3085 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3086
3087 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3088 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3089 if (eind->pcrel_relocs_copied != NULL)
3090 {
3091 if (edir->pcrel_relocs_copied != NULL)
3092 {
3093 struct elf_cris_pcrel_relocs_copied **pp;
3094 struct elf_cris_pcrel_relocs_copied *p;
3095
3096 /* Add reloc counts against the indirect sym to the direct sym
3097 list. Merge any entries against the same section. */
3098 for (pp = &eind->pcrel_relocs_copied; *pp != NULL;)
3099 {
3100 struct elf_cris_pcrel_relocs_copied *q;
3101 p = *pp;
3102 for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next)
3103 if (q->section == p->section)
3104 {
3105 q->count += p->count;
3106 *pp = p->next;
3107 break;
3108 }
3109 if (q == NULL)
3110 pp = &p->next;
3111 }
3112 *pp = edir->pcrel_relocs_copied;
3113 }
3114 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3115 }
3116 XMOVE (gotplt_refcount);
3117 XMOVE (gotplt_offset);
3118 XMOVE (reg_got_refcount);
3119 XMOVE (tprel_refcount);
3120 XMOVE (dtp_refcount);
3121 #undef XMOVE
3122 #undef XMOVOPZ
3123
3124 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3125 }
3126
3127 /* Look through the relocs for a section during the first phase. */
3128
3129 static bfd_boolean
3130 cris_elf_check_relocs (bfd *abfd,
3131 struct bfd_link_info *info,
3132 asection *sec,
3133 const Elf_Internal_Rela *relocs)
3134 {
3135 struct elf_cris_link_hash_table * htab;
3136 bfd *dynobj;
3137 Elf_Internal_Shdr *symtab_hdr;
3138 struct elf_link_hash_entry **sym_hashes;
3139 bfd_signed_vma *local_got_refcounts;
3140 const Elf_Internal_Rela *rel;
3141 const Elf_Internal_Rela *rel_end;
3142 asection *sgot;
3143 asection *srelgot;
3144 asection *sreloc;
3145
3146 if (info->relocatable)
3147 return TRUE;
3148
3149 htab = elf_cris_hash_table (info);
3150 if (htab == NULL)
3151 return FALSE;
3152
3153 dynobj = elf_hash_table (info)->dynobj;
3154 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3155 sym_hashes = elf_sym_hashes (abfd);
3156 local_got_refcounts = elf_local_got_refcounts (abfd);
3157
3158 sgot = NULL;
3159 srelgot = NULL;
3160 sreloc = NULL;
3161
3162 rel_end = relocs + sec->reloc_count;
3163 for (rel = relocs; rel < rel_end; rel++)
3164 {
3165 struct elf_link_hash_entry *h;
3166 unsigned long r_symndx;
3167 enum elf_cris_reloc_type r_type;
3168 bfd_signed_vma got_element_size = 4;
3169 unsigned long r_symndx_lgot = INT_MAX;
3170
3171 r_symndx = ELF32_R_SYM (rel->r_info);
3172 if (r_symndx < symtab_hdr->sh_info)
3173 {
3174 h = NULL;
3175 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3176 }
3177 else
3178 {
3179 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3180 while (h->root.type == bfd_link_hash_indirect
3181 || h->root.type == bfd_link_hash_warning)
3182 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3183 }
3184
3185 r_type = ELF32_R_TYPE (rel->r_info);
3186
3187 /* Some relocs require linker-created sections; we need to hang them
3188 on the first input bfd we found that contained dynamic relocs. */
3189 switch (r_type)
3190 {
3191 case R_CRIS_32_DTPREL:
3192 if ((sec->flags & SEC_ALLOC) == 0)
3193 /* This'd be a .dtpreld entry in e.g. debug info. We have
3194 several different switch statements below, but none of
3195 that is needed; we need no preparations for resolving
3196 R_CRIS_32_DTPREL into a non-allocated section (debug
3197 info), so let's just move on to the next
3198 relocation. */
3199 continue;
3200 /* Fall through. */
3201 case R_CRIS_16_DTPREL:
3202 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3203 entry at index 3. */
3204 if (htab->dtpmod_refcount == 0)
3205 htab->next_gotplt_entry += 8;
3206
3207 htab->dtpmod_refcount++;
3208 /* Fall through. */
3209
3210 case R_CRIS_32_IE:
3211 case R_CRIS_32_GD:
3212 case R_CRIS_16_GOT_GD:
3213 case R_CRIS_32_GOT_GD:
3214 case R_CRIS_32_GOT_TPREL:
3215 case R_CRIS_16_GOT_TPREL:
3216 case R_CRIS_16_GOT:
3217 case R_CRIS_32_GOT:
3218 case R_CRIS_32_GOTREL:
3219 case R_CRIS_32_PLT_GOTREL:
3220 case R_CRIS_32_PLT_PCREL:
3221 case R_CRIS_16_GOTPLT:
3222 case R_CRIS_32_GOTPLT:
3223 if (dynobj == NULL)
3224 {
3225 elf_hash_table (info)->dynobj = dynobj = abfd;
3226
3227 /* We could handle this if we can get a handle on the
3228 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3229 that, we must insist on dynobj being a specific mach. */
3230 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3231 {
3232 (*_bfd_error_handler)
3233 (_("%B, section %A:\n v10/v32 compatible object %s"
3234 " must not contain a PIC relocation"),
3235 abfd, sec);
3236 return FALSE;
3237 }
3238
3239 /* Create the .got section, so we can assume it's always
3240 present whenever there's a dynobj. */
3241 if (!_bfd_elf_create_got_section (dynobj, info))
3242 return FALSE;
3243 }
3244
3245 if (sgot == NULL)
3246 sgot = bfd_get_linker_section (dynobj, ".got");
3247
3248 if (local_got_refcounts == NULL)
3249 {
3250 bfd_size_type amt;
3251
3252 /* We use index local_got_refcounts[-1] to count all
3253 GOT-relative relocations that do not have explicit
3254 GOT entries. */
3255 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3256 amt *= sizeof (bfd_signed_vma);
3257 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3258 if (local_got_refcounts == NULL)
3259 return FALSE;
3260
3261 local_got_refcounts++;
3262 elf_local_got_refcounts (abfd) = local_got_refcounts;
3263 }
3264 break;
3265
3266 default:
3267 break;
3268 }
3269
3270 /* Some relocs require a global offset table (but perhaps not a
3271 specific GOT entry). */
3272 switch (r_type)
3273 {
3274 case R_CRIS_16_DTPREL:
3275 case R_CRIS_32_DTPREL:
3276 /* Not requesting .got.rela for an executable: the contents
3277 of the first entry is constant there. For a shared
3278 library, we need .got.rela for the R_CRIS_DTPMOD
3279 relocation at index 3. */
3280 if (!info->shared)
3281 break;
3282 /* Fall through. */
3283
3284 case R_CRIS_32_IE:
3285 case R_CRIS_32_GD:
3286 case R_CRIS_16_GOT_GD:
3287 case R_CRIS_32_GOT_GD:
3288 case R_CRIS_32_GOT_TPREL:
3289 case R_CRIS_16_GOT_TPREL:
3290 /* Fall through. */
3291
3292 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3293 entry only for local symbols. Unfortunately, we don't know
3294 until later on if there's a version script that forces the
3295 symbol local. We must have the .rela.got section in place
3296 before we know if the symbol looks global now, so we need
3297 to treat the reloc just like for R_CRIS_16_GOT and
3298 R_CRIS_32_GOT. */
3299 case R_CRIS_16_GOTPLT:
3300 case R_CRIS_32_GOTPLT:
3301 case R_CRIS_16_GOT:
3302 case R_CRIS_32_GOT:
3303 if (srelgot == NULL
3304 && (h != NULL || info->shared))
3305 {
3306 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
3307 if (srelgot == NULL)
3308 {
3309 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3310 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3311 | SEC_READONLY);
3312 srelgot = bfd_make_section_anyway_with_flags (dynobj,
3313 ".rela.got",
3314 flags);
3315 if (srelgot == NULL
3316 || !bfd_set_section_alignment (dynobj, srelgot, 2))
3317 return FALSE;
3318 }
3319 }
3320 break;
3321
3322 default:
3323 break;
3324 }
3325
3326 /* Warn and error for invalid input. */
3327 switch (r_type)
3328 {
3329 case R_CRIS_32_IE:
3330 case R_CRIS_32_TPREL:
3331 case R_CRIS_16_TPREL:
3332 case R_CRIS_32_GD:
3333 if (info->shared)
3334 {
3335 (*_bfd_error_handler)
3336 (_("%B, section %A:\n relocation %s not valid"
3337 " in a shared object;"
3338 " typically an option mixup, recompile with -fPIC"),
3339 abfd,
3340 sec,
3341 cris_elf_howto_table[r_type].name);
3342 /* Don't return FALSE here; we want messages for all of
3343 these and the error behavior is ungraceful
3344 anyway. */
3345 }
3346 default:
3347 break;
3348 }
3349
3350 switch (r_type)
3351 {
3352 case R_CRIS_32_GD:
3353 case R_CRIS_16_GOT_GD:
3354 case R_CRIS_32_GOT_GD:
3355 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3356 got_element_size = 8;
3357 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3358 break;
3359
3360 case R_CRIS_16_DTPREL:
3361 case R_CRIS_32_DTPREL:
3362 /* These two just request for the constant-index
3363 module-local tls_index-sized GOT entry, which we add
3364 elsewhere. */
3365 break;
3366
3367 case R_CRIS_32_IE:
3368 case R_CRIS_32_GOT_TPREL:
3369 case R_CRIS_16_GOT_TPREL:
3370 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3371
3372 /* Those relocs also require that a DSO is of type
3373 Initial Exec. Like other targets, we don't reset this
3374 flag even if the relocs are GC:ed away. */
3375 if (info->shared)
3376 info->flags |= DF_STATIC_TLS;
3377 break;
3378
3379 /* Let's list the other assembler-generated TLS-relocs too,
3380 just to show that they're not forgotten. */
3381 case R_CRIS_16_TPREL:
3382 case R_CRIS_32_TPREL:
3383 default:
3384 break;
3385 }
3386
3387 switch (r_type)
3388 {
3389 case R_CRIS_16_GOTPLT:
3390 case R_CRIS_32_GOTPLT:
3391 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3392 entry) is eliminated. We can only do this for a non-local
3393 symbol. */
3394 if (h != NULL)
3395 {
3396 elf_cris_hash_entry (h)->gotplt_refcount++;
3397 goto handle_gotplt_reloc;
3398 }
3399 /* If h is NULL then this is a local symbol, and we must make a
3400 GOT entry for it, so handle it like a GOT reloc. */
3401 /* Fall through. */
3402
3403 case R_CRIS_32_IE:
3404 case R_CRIS_32_GD:
3405 case R_CRIS_16_GOT_GD:
3406 case R_CRIS_32_GOT_GD:
3407 case R_CRIS_32_GOT_TPREL:
3408 case R_CRIS_16_GOT_TPREL:
3409 case R_CRIS_16_GOT:
3410 case R_CRIS_32_GOT:
3411 /* This symbol requires a global offset table entry. */
3412 if (h != NULL)
3413 {
3414 if (h->got.refcount == 0)
3415 {
3416 /* Make sure this symbol is output as a dynamic symbol. */
3417 if (h->dynindx == -1)
3418 {
3419 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3420 return FALSE;
3421 }
3422 }
3423
3424 /* Update the sum of reloc counts for this symbol. */
3425 h->got.refcount++;
3426
3427 switch (r_type)
3428 {
3429 case R_CRIS_16_GOT:
3430 case R_CRIS_32_GOT:
3431 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3432 {
3433 /* Allocate space in the .got section. */
3434 sgot->size += got_element_size;
3435 /* Allocate relocation space. */
3436 srelgot->size += sizeof (Elf32_External_Rela);
3437 }
3438 elf_cris_hash_entry (h)->reg_got_refcount++;
3439 break;
3440
3441 case R_CRIS_32_GD:
3442 case R_CRIS_16_GOT_GD:
3443 case R_CRIS_32_GOT_GD:
3444 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3445 {
3446 /* Allocate space in the .got section. */
3447 sgot->size += got_element_size;
3448 /* Allocate relocation space. */
3449 srelgot->size += sizeof (Elf32_External_Rela);
3450 }
3451 elf_cris_hash_entry (h)->dtp_refcount++;
3452 break;
3453
3454 case R_CRIS_32_IE:
3455 case R_CRIS_32_GOT_TPREL:
3456 case R_CRIS_16_GOT_TPREL:
3457 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3458 {
3459 /* Allocate space in the .got section. */
3460 sgot->size += got_element_size;
3461 /* Allocate relocation space. */
3462 srelgot->size += sizeof (Elf32_External_Rela);
3463 }
3464 elf_cris_hash_entry (h)->tprel_refcount++;
3465 break;
3466
3467 default:
3468 BFD_FAIL ();
3469 break;
3470 }
3471 }
3472 else
3473 {
3474 /* This is a global offset table entry for a local symbol. */
3475 if (local_got_refcounts[r_symndx_lgot] == 0)
3476 {
3477 sgot->size += got_element_size;
3478 if (info->shared)
3479 {
3480 /* If we are generating a shared object, we need
3481 to output a R_CRIS_RELATIVE reloc so that the
3482 dynamic linker can adjust this GOT entry.
3483 Similarly for non-regular got entries. */
3484 srelgot->size += sizeof (Elf32_External_Rela);
3485 }
3486 }
3487 /* Update the reloc-specific count. */
3488 local_got_refcounts[r_symndx_lgot]++;
3489
3490 /* This one is the sum of all the others. */
3491 local_got_refcounts[r_symndx]++;
3492 }
3493 break;
3494
3495 case R_CRIS_16_DTPREL:
3496 case R_CRIS_32_DTPREL:
3497 case R_CRIS_32_GOTREL:
3498 /* This reference requires a global offset table.
3499 FIXME: The actual refcount isn't used currently; the .got
3500 section can't be removed if there were any references in the
3501 input. */
3502 local_got_refcounts[-1]++;
3503 break;
3504
3505 handle_gotplt_reloc:
3506
3507 case R_CRIS_32_PLT_GOTREL:
3508 /* This reference requires a global offset table. */
3509 local_got_refcounts[-1]++;
3510 /* Fall through. */
3511
3512 case R_CRIS_32_PLT_PCREL:
3513 /* This symbol requires a procedure linkage table entry. We
3514 actually build the entry in adjust_dynamic_symbol,
3515 because this might be a case of linking PIC code which is
3516 never referenced by a dynamic object, in which case we
3517 don't need to generate a procedure linkage table entry
3518 after all. */
3519
3520 /* Beware: if we'd check for visibility of the symbol here
3521 (and not marking the need for a PLT when non-visible), we'd
3522 get into trouble with keeping handling consistent with
3523 regards to relocs found before definition and GOTPLT
3524 handling. Eliminable PLT entries will be dealt with later
3525 anyway. */
3526 if (h == NULL)
3527 continue;
3528
3529 h->needs_plt = 1;
3530 h->plt.refcount++;
3531 break;
3532
3533 case R_CRIS_8:
3534 case R_CRIS_16:
3535 case R_CRIS_32:
3536 /* Let's help debug shared library creation. Any of these
3537 relocs *can* be used in shared libs, but pages containing
3538 them cannot be shared, so they're not appropriate for
3539 common use. Don't warn for sections we don't care about,
3540 such as debug sections or non-constant sections. We
3541 can't help tables of (global) function pointers, for
3542 example, though they must be emitted in a (writable) data
3543 section to avoid having impure text sections. */
3544 if (info->shared
3545 && (sec->flags & SEC_ALLOC) != 0
3546 && (sec->flags & SEC_READONLY) != 0)
3547 {
3548 /* FIXME: How do we make this optionally a warning only? */
3549 (*_bfd_error_handler)
3550 (_("%B, section %A:\n relocation %s should not"
3551 " be used in a shared object; recompile with -fPIC"),
3552 abfd,
3553 sec,
3554 cris_elf_howto_table[r_type].name);
3555 }
3556
3557 /* We don't need to handle relocs into sections not going into
3558 the "real" output. */
3559 if ((sec->flags & SEC_ALLOC) == 0)
3560 break;
3561
3562 if (h != NULL)
3563 {
3564 h->non_got_ref = 1;
3565
3566 /* Make sure a plt entry is created for this symbol if it
3567 turns out to be a function defined by a dynamic object. */
3568 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3569 h->plt.refcount++;
3570 }
3571
3572 /* If we are creating a shared library and this is not a local
3573 symbol, we need to copy the reloc into the shared library.
3574 However when linking with -Bsymbolic and this is a global
3575 symbol which is defined in an object we are including in the
3576 link (i.e., DEF_REGULAR is set), then we can resolve the
3577 reloc directly. At this point we have not seen all the input
3578 files, so it is possible that DEF_REGULAR is not set now but
3579 will be set later (it is never cleared). In case of a weak
3580 definition, DEF_REGULAR may be cleared later by a strong
3581 definition in a shared library. We account for that
3582 possibility below by storing information in the relocs_copied
3583 field of the hash table entry. A similar situation occurs
3584 when creating shared libraries and symbol visibility changes
3585 render the symbol local. */
3586
3587 /* No need to do anything if we're not creating a shared object. */
3588 if (! info->shared)
3589 break;
3590
3591 /* We may need to create a reloc section in the dynobj and made room
3592 for this reloc. */
3593 if (sreloc == NULL)
3594 {
3595 sreloc = _bfd_elf_make_dynamic_reloc_section
3596 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3597
3598 if (sreloc == NULL)
3599 return FALSE;
3600 }
3601
3602 if (sec->flags & SEC_READONLY)
3603 info->flags |= DF_TEXTREL;
3604
3605 sreloc->size += sizeof (Elf32_External_Rela);
3606 break;
3607
3608 case R_CRIS_8_PCREL:
3609 case R_CRIS_16_PCREL:
3610 case R_CRIS_32_PCREL:
3611 if (h != NULL)
3612 {
3613 h->non_got_ref = 1;
3614
3615 /* Make sure a plt entry is created for this symbol if it
3616 turns out to be a function defined by a dynamic object. */
3617 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3618 h->plt.refcount++;
3619 }
3620
3621 /* If we are creating a shared library and this is not a local
3622 symbol, we need to copy the reloc into the shared library.
3623 However when linking with -Bsymbolic and this is a global
3624 symbol which is defined in an object we are including in the
3625 link (i.e., DEF_REGULAR is set), then we can resolve the
3626 reloc directly. At this point we have not seen all the input
3627 files, so it is possible that DEF_REGULAR is not set now but
3628 will be set later (it is never cleared). In case of a weak
3629 definition, DEF_REGULAR may be cleared later by a strong
3630 definition in a shared library. We account for that
3631 possibility below by storing information in the relocs_copied
3632 field of the hash table entry. A similar situation occurs
3633 when creating shared libraries and symbol visibility changes
3634 render the symbol local. */
3635
3636 /* No need to do anything if we're not creating a shared object. */
3637 if (! info->shared)
3638 break;
3639
3640 /* We don't need to handle relocs into sections not going into
3641 the "real" output. */
3642 if ((sec->flags & SEC_ALLOC) == 0)
3643 break;
3644
3645 /* If the symbol is local, then we know already we can
3646 eliminate the reloc. */
3647 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3648 break;
3649
3650 /* If this is with -Bsymbolic and the symbol isn't weak, and
3651 is defined by an ordinary object (the ones we include in
3652 this shared library) then we can also eliminate the
3653 reloc. See comment above for more eliminable cases which
3654 we can't identify at this time. */
3655 if (info->symbolic
3656 && h->root.type != bfd_link_hash_defweak
3657 && h->def_regular)
3658 break;
3659
3660 /* We may need to create a reloc section in the dynobj and made room
3661 for this reloc. */
3662 if (sreloc == NULL)
3663 {
3664 sreloc = _bfd_elf_make_dynamic_reloc_section
3665 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3666
3667 if (sreloc == NULL)
3668 return FALSE;
3669 }
3670
3671 sreloc->size += sizeof (Elf32_External_Rela);
3672
3673 /* We count the number of PC relative relocations we have
3674 entered for this symbol, so that we can discard them
3675 again if the symbol is later defined by a regular object.
3676 We know that h is really a pointer to an
3677 elf_cris_link_hash_entry. */
3678 {
3679 struct elf_cris_link_hash_entry *eh;
3680 struct elf_cris_pcrel_relocs_copied *p;
3681
3682 eh = elf_cris_hash_entry (h);
3683
3684 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3685 if (p->section == sec)
3686 break;
3687
3688 if (p == NULL)
3689 {
3690 p = ((struct elf_cris_pcrel_relocs_copied *)
3691 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3692 if (p == NULL)
3693 return FALSE;
3694 p->next = eh->pcrel_relocs_copied;
3695 eh->pcrel_relocs_copied = p;
3696 p->section = sec;
3697 p->count = 0;
3698 p->r_type = r_type;
3699 }
3700
3701 ++p->count;
3702 }
3703 break;
3704
3705 /* This relocation describes the C++ object vtable hierarchy.
3706 Reconstruct it for later use during GC. */
3707 case R_CRIS_GNU_VTINHERIT:
3708 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3709 return FALSE;
3710 break;
3711
3712 /* This relocation describes which C++ vtable entries are actually
3713 used. Record for later use during GC. */
3714 case R_CRIS_GNU_VTENTRY:
3715 BFD_ASSERT (h != NULL);
3716 if (h != NULL
3717 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3718 return FALSE;
3719 break;
3720
3721 case R_CRIS_16_TPREL:
3722 case R_CRIS_32_TPREL:
3723 /* Already warned above, when necessary. */
3724 break;
3725
3726 default:
3727 /* Other relocs do not appear here. */
3728 bfd_set_error (bfd_error_bad_value);
3729 return FALSE;
3730 }
3731 }
3732
3733 return TRUE;
3734 }
3735
3736 /* Set the sizes of the dynamic sections. */
3737
3738 static bfd_boolean
3739 elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3740 struct bfd_link_info *info)
3741 {
3742 struct elf_cris_link_hash_table * htab;
3743 bfd *dynobj;
3744 asection *s;
3745 bfd_boolean plt;
3746 bfd_boolean relocs;
3747
3748 htab = elf_cris_hash_table (info);
3749 if (htab == NULL)
3750 return FALSE;
3751
3752 dynobj = elf_hash_table (info)->dynobj;
3753 BFD_ASSERT (dynobj != NULL);
3754
3755 if (elf_hash_table (info)->dynamic_sections_created)
3756 {
3757 /* Set the contents of the .interp section to the interpreter. */
3758 if (info->executable)
3759 {
3760 s = bfd_get_linker_section (dynobj, ".interp");
3761 BFD_ASSERT (s != NULL);
3762 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3763 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3764 }
3765 }
3766 else
3767 {
3768 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3769 elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got,
3770 info);
3771
3772 /* We may have created entries in the .rela.got section.
3773 However, if we are not creating the dynamic sections, we will
3774 not actually use these entries. Reset the size of .rela.got,
3775 which will cause it to get stripped from the output file
3776 below. */
3777 s = bfd_get_linker_section (dynobj, ".rela.got");
3778 if (s != NULL)
3779 s->size = 0;
3780 }
3781
3782 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3783 relative relocs against symbols defined in a regular object. We
3784 allocated space for them in the check_relocs routine, but we will not
3785 fill them in in the relocate_section routine. We also discard space
3786 for relocs that have become for local symbols due to symbol
3787 visibility changes. For programs, we discard space for relocs for
3788 symbols not referenced by any dynamic object. */
3789 if (info->shared)
3790 elf_cris_link_hash_traverse (htab,
3791 elf_cris_discard_excess_dso_dynamics,
3792 info);
3793 else
3794 elf_cris_link_hash_traverse (htab,
3795 elf_cris_discard_excess_program_dynamics,
3796 info);
3797
3798 /* The check_relocs and adjust_dynamic_symbol entry points have
3799 determined the sizes of the various dynamic sections. Allocate
3800 memory for them. */
3801 plt = FALSE;
3802 relocs = FALSE;
3803 for (s = dynobj->sections; s != NULL; s = s->next)
3804 {
3805 const char *name;
3806
3807 if ((s->flags & SEC_LINKER_CREATED) == 0)
3808 continue;
3809
3810 /* It's OK to base decisions on the section name, because none
3811 of the dynobj section names depend upon the input files. */
3812 name = bfd_get_section_name (dynobj, s);
3813
3814 if (strcmp (name, ".plt") == 0)
3815 {
3816 /* Remember whether there is a PLT. */
3817 plt = s->size != 0;
3818 }
3819 else if (strcmp (name, ".got.plt") == 0)
3820 {
3821 /* The .got.plt contains the .got header as well as the
3822 actual .got.plt contents. The .got header may contain a
3823 R_CRIS_DTPMOD entry at index 3. */
3824 s->size += htab->dtpmod_refcount != 0
3825 ? 8 : 0;
3826 }
3827 else if (CONST_STRNEQ (name, ".rela"))
3828 {
3829 if (strcmp (name, ".rela.got") == 0
3830 && htab->dtpmod_refcount != 0
3831 && info->shared)
3832 s->size += sizeof (Elf32_External_Rela);
3833
3834 if (s->size != 0)
3835 {
3836 /* Remember whether there are any reloc sections other
3837 than .rela.plt. */
3838 if (strcmp (name, ".rela.plt") != 0)
3839 relocs = TRUE;
3840
3841 /* We use the reloc_count field as a counter if we need
3842 to copy relocs into the output file. */
3843 s->reloc_count = 0;
3844 }
3845 }
3846 else if (! CONST_STRNEQ (name, ".got")
3847 && strcmp (name, ".dynbss") != 0)
3848 {
3849 /* It's not one of our sections, so don't allocate space. */
3850 continue;
3851 }
3852
3853 if (s->size == 0)
3854 {
3855 /* If we don't need this section, strip it from the
3856 output file. This is mostly to handle .rela.bss and
3857 .rela.plt. We must create both sections in
3858 create_dynamic_sections, because they must be created
3859 before the linker maps input sections to output
3860 sections. The linker does that before
3861 adjust_dynamic_symbol is called, and it is that
3862 function which decides whether anything needs to go
3863 into these sections. */
3864 s->flags |= SEC_EXCLUDE;
3865 continue;
3866 }
3867
3868 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3869 continue;
3870
3871 /* Allocate memory for the section contents. We use bfd_zalloc here
3872 in case unused entries are not reclaimed before the section's
3873 contents are written out. This should not happen, but this way
3874 if it does, we will not write out garbage. For reloc sections,
3875 this will make entries have the type R_CRIS_NONE. */
3876 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3877 if (s->contents == NULL)
3878 return FALSE;
3879 }
3880
3881 if (elf_hash_table (info)->dynamic_sections_created)
3882 {
3883 /* Add some entries to the .dynamic section. We fill in the
3884 values later, in elf_cris_finish_dynamic_sections, but we
3885 must add the entries now so that we get the correct size for
3886 the .dynamic section. The DT_DEBUG entry is filled in by the
3887 dynamic linker and used by the debugger. */
3888 #define add_dynamic_entry(TAG, VAL) \
3889 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3890
3891 if (!info->shared)
3892 {
3893 if (!add_dynamic_entry (DT_DEBUG, 0))
3894 return FALSE;
3895 }
3896
3897 if (plt)
3898 {
3899 if (!add_dynamic_entry (DT_PLTGOT, 0)
3900 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3901 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3902 || !add_dynamic_entry (DT_JMPREL, 0))
3903 return FALSE;
3904 }
3905
3906 if (relocs)
3907 {
3908 if (!add_dynamic_entry (DT_RELA, 0)
3909 || !add_dynamic_entry (DT_RELASZ, 0)
3910 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3911 return FALSE;
3912 }
3913
3914 if ((info->flags & DF_TEXTREL) != 0)
3915 {
3916 if (!add_dynamic_entry (DT_TEXTREL, 0))
3917 return FALSE;
3918 info->flags |= DF_TEXTREL;
3919 }
3920 }
3921 #undef add_dynamic_entry
3922
3923 return TRUE;
3924 }
3925
3926 /* This function is called via elf_cris_link_hash_traverse if we are
3927 creating a shared object. In the -Bsymbolic case, it discards the
3928 space allocated to copy PC relative relocs against symbols which
3929 are defined in regular objects. For the normal non-symbolic case,
3930 we also discard space for relocs that have become local due to
3931 symbol visibility changes. We allocated space for them in the
3932 check_relocs routine, but we won't fill them in in the
3933 relocate_section routine. */
3934
3935 static bfd_boolean
3936 elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *h,
3937 void * inf)
3938 {
3939 struct elf_cris_pcrel_relocs_copied *s;
3940 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3941
3942 /* If a symbol has been forced local or we have found a regular
3943 definition for the symbolic link case, then we won't be needing
3944 any relocs. */
3945 if (h->root.def_regular
3946 && (h->root.forced_local
3947 || info->symbolic))
3948 {
3949 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3950 {
3951 asection *sreloc
3952 = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info)
3953 ->dynobj,
3954 s->section,
3955 /*rela?*/ TRUE);
3956 sreloc->size -= s->count * sizeof (Elf32_External_Rela);
3957 }
3958 return TRUE;
3959 }
3960
3961 /* If we have accounted for PC-relative relocs for read-only
3962 sections, now is the time to warn for them. We can't do it in
3963 cris_elf_check_relocs, because we don't know the status of all
3964 symbols at that time (and it's common to force symbols local
3965 late). */
3966
3967 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3968 if ((s->section->flags & SEC_READONLY) != 0)
3969 {
3970 /* FIXME: How do we make this optionally a warning only? */
3971 (*_bfd_error_handler)
3972 (_("%B, section `%A', to symbol `%s':\n"
3973 " relocation %s should not be used"
3974 " in a shared object; recompile with -fPIC"),
3975 s->section->owner,
3976 s->section,
3977 h->root.root.root.string,
3978 cris_elf_howto_table[s->r_type].name);
3979
3980 info->flags |= DF_TEXTREL;
3981 }
3982
3983 return TRUE;
3984 }
3985
3986 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3987 creating a shared object. We discard space for relocs for symbols put
3988 in the .got, but which we found we do not have to resolve at run-time. */
3989
3990 static bfd_boolean
3991 elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *h,
3992 void * inf)
3993 {
3994 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3995
3996 /* If we're not creating a shared library and have a symbol which is
3997 referred to by .got references, but the symbol is defined locally,
3998 (or rather, not defined by a DSO) then lose the reloc for the .got
3999 (don't allocate room for it). Likewise for relocs for something
4000 for which we create a PLT. */
4001 if (!h->root.def_dynamic
4002 || h->root.plt.refcount > 0)
4003 {
4004 if (h->reg_got_refcount > 0
4005 /* The size of this section is only valid and in sync with the
4006 various reference counts if we do dynamic; don't decrement it
4007 otherwise. */
4008 && elf_hash_table (info)->dynamic_sections_created)
4009 {
4010 bfd *dynobj = elf_hash_table (info)->dynobj;
4011 asection *srelgot;
4012
4013 BFD_ASSERT (dynobj != NULL);
4014
4015 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
4016
4017 BFD_ASSERT (srelgot != NULL);
4018
4019 srelgot->size -= sizeof (Elf32_External_Rela);
4020 }
4021
4022 /* If the locally-defined symbol isn't used by a DSO, then we don't
4023 have to export it as a dynamic symbol. This was already done for
4024 functions; doing this for all symbols would presumably not
4025 introduce new problems. Of course we don't do this if we're
4026 exporting all dynamic symbols. */
4027 if (! info->export_dynamic
4028 && h->root.dynindx != -1
4029 && !h->root.def_dynamic
4030 && !h->root.ref_dynamic)
4031 {
4032 h->root.dynindx = -1;
4033 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4034 h->root.dynstr_index);
4035 }
4036 }
4037
4038 return TRUE;
4039 }
4040
4041 /* Reject a file depending on presence and expectation of prefixed
4042 underscores on symbols. */
4043
4044 static bfd_boolean
4045 cris_elf_object_p (bfd *abfd)
4046 {
4047 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4048 return FALSE;
4049
4050 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4051 return (bfd_get_symbol_leading_char (abfd) == '_');
4052 else
4053 return (bfd_get_symbol_leading_char (abfd) == 0);
4054 }
4055
4056 /* Mark presence or absence of leading underscore. Set machine type
4057 flags from mach type. */
4058
4059 static void
4060 cris_elf_final_write_processing (bfd *abfd,
4061 bfd_boolean linker ATTRIBUTE_UNUSED)
4062 {
4063 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4064
4065 e_flags &= ~EF_CRIS_UNDERSCORE;
4066 if (bfd_get_symbol_leading_char (abfd) == '_')
4067 e_flags |= EF_CRIS_UNDERSCORE;
4068
4069 switch (bfd_get_mach (abfd))
4070 {
4071 case bfd_mach_cris_v0_v10:
4072 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4073 break;
4074
4075 case bfd_mach_cris_v10_v32:
4076 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4077 break;
4078
4079 case bfd_mach_cris_v32:
4080 e_flags |= EF_CRIS_VARIANT_V32;
4081 break;
4082
4083 default:
4084 _bfd_abort (__FILE__, __LINE__,
4085 _("Unexpected machine number"));
4086 }
4087
4088 elf_elfheader (abfd)->e_flags = e_flags;
4089 }
4090
4091 /* Set the mach type from e_flags value. */
4092
4093 static bfd_boolean
4094 cris_elf_set_mach_from_flags (bfd *abfd,
4095 unsigned long flags)
4096 {
4097 switch (flags & EF_CRIS_VARIANT_MASK)
4098 {
4099 case EF_CRIS_VARIANT_ANY_V0_V10:
4100 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4101 break;
4102
4103 case EF_CRIS_VARIANT_V32:
4104 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4105 break;
4106
4107 case EF_CRIS_VARIANT_COMMON_V10_V32:
4108 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4109 break;
4110
4111 default:
4112 /* Since we don't recognize them, we obviously can't support them
4113 with this code; we'd have to require that all future handling
4114 would be optional. */
4115 bfd_set_error (bfd_error_wrong_format);
4116 return FALSE;
4117 }
4118
4119 return TRUE;
4120 }
4121
4122 /* Display the flags field. */
4123
4124 static bfd_boolean
4125 cris_elf_print_private_bfd_data (bfd *abfd, void * ptr)
4126 {
4127 FILE *file = (FILE *) ptr;
4128
4129 BFD_ASSERT (abfd != NULL && ptr != NULL);
4130
4131 _bfd_elf_print_private_bfd_data (abfd, ptr);
4132
4133 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4134
4135 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4136 fprintf (file, _(" [symbols have a _ prefix]"));
4137 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4138 == EF_CRIS_VARIANT_COMMON_V10_V32)
4139 fprintf (file, _(" [v10 and v32]"));
4140 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4141 == EF_CRIS_VARIANT_V32)
4142 fprintf (file, _(" [v32]"));
4143
4144 fputc ('\n', file);
4145 return TRUE;
4146 }
4147
4148 /* Don't mix files with and without a leading underscore. */
4149
4150 static bfd_boolean
4151 cris_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4152 {
4153 int imach, omach;
4154
4155 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4156 return FALSE;
4157
4158 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4159 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4160 return TRUE;
4161
4162 imach = bfd_get_mach (ibfd);
4163
4164 if (! elf_flags_init (obfd))
4165 {
4166 /* This happens when ld starts out with a 'blank' output file. */
4167 elf_flags_init (obfd) = TRUE;
4168
4169 /* We ignore the linker-set mach, and instead set it according to
4170 the first input file. This would also happen if we could
4171 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4172 This allows us to keep the same linker config across
4173 cris(v0..v10) and crisv32. The drawback is that we can't force
4174 the output type, which might be a sane thing to do for a
4175 v10+v32 compatibility object. */
4176 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4177 return FALSE;
4178 }
4179
4180 if (bfd_get_symbol_leading_char (ibfd)
4181 != bfd_get_symbol_leading_char (obfd))
4182 {
4183 (*_bfd_error_handler)
4184 (bfd_get_symbol_leading_char (ibfd) == '_'
4185 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4186 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4187 ibfd);
4188 bfd_set_error (bfd_error_bad_value);
4189 return FALSE;
4190 }
4191
4192 omach = bfd_get_mach (obfd);
4193
4194 if (imach != omach)
4195 {
4196 /* We can get an incompatible combination only if either is
4197 bfd_mach_cris_v32, and the other one isn't compatible. */
4198 if ((imach == bfd_mach_cris_v32
4199 && omach != bfd_mach_cris_v10_v32)
4200 || (omach == bfd_mach_cris_v32
4201 && imach != bfd_mach_cris_v10_v32))
4202 {
4203 (*_bfd_error_handler)
4204 ((imach == bfd_mach_cris_v32)
4205 ? _("%B contains CRIS v32 code, incompatible"
4206 " with previous objects")
4207 : _("%B contains non-CRIS-v32 code, incompatible"
4208 " with previous objects"),
4209 ibfd);
4210 bfd_set_error (bfd_error_bad_value);
4211 return FALSE;
4212 }
4213
4214 /* We don't have to check the case where the input is compatible
4215 with v10 and v32, because the output is already known to be set
4216 to the other (compatible) mach. */
4217 if (omach == bfd_mach_cris_v10_v32
4218 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4219 return FALSE;
4220 }
4221
4222 return TRUE;
4223 }
4224
4225 /* Do side-effects of e_flags copying to obfd. */
4226
4227 static bfd_boolean
4228 cris_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
4229 {
4230 /* Call the base function. */
4231 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4232 return FALSE;
4233
4234 /* If output is big-endian for some obscure reason, stop here. */
4235 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4236 return FALSE;
4237
4238 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4239 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4240 return TRUE;
4241
4242 /* Do what we really came here for. */
4243 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4244 }
4245
4246 static enum elf_reloc_type_class
4247 elf_cris_reloc_type_class (const Elf_Internal_Rela *rela)
4248 {
4249 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4250 switch (r_type)
4251 {
4252 case R_CRIS_RELATIVE:
4253 return reloc_class_relative;
4254 case R_CRIS_JUMP_SLOT:
4255 return reloc_class_plt;
4256 case R_CRIS_COPY:
4257 return reloc_class_copy;
4258 default:
4259 return reloc_class_normal;
4260 }
4261 }
4262
4263 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4264 two GOT entries from three types with two different sizes. We handle
4265 it as a single entry, so we can use the regular offset-calculation
4266 machinery. */
4267
4268 static bfd_vma
4269 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4270 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4271 struct elf_link_hash_entry *hr,
4272 bfd *ibfd,
4273 unsigned long symndx)
4274 {
4275 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4276 bfd_vma eltsiz = 0;
4277
4278 /* We may have one regular GOT entry or up to two TLS GOT
4279 entries. */
4280 if (h == NULL)
4281 {
4282 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4283 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4284
4285 BFD_ASSERT (local_got_refcounts != NULL);
4286
4287 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4288 {
4289 /* We can't have a variable referred to both as a regular
4290 variable and through TLS relocs. */
4291 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4292 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4293 return 4;
4294 }
4295
4296 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4297 eltsiz += 8;
4298
4299 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4300 eltsiz += 4;
4301 }
4302 else
4303 {
4304 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4305 if (hh->reg_got_refcount > 0)
4306 {
4307 /* The actual error-on-input is emitted elsewhere. */
4308 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4309 return 4;
4310 }
4311
4312 if (hh->dtp_refcount > 0)
4313 eltsiz += 8;
4314
4315 if (hh->tprel_refcount > 0)
4316 eltsiz += 4;
4317 }
4318
4319 /* We're only called when h->got.refcount is non-zero, so we must
4320 have a non-zero size. */
4321 BFD_ASSERT (eltsiz != 0);
4322 return eltsiz;
4323 }
4324 \f
4325 #define ELF_ARCH bfd_arch_cris
4326 #define ELF_TARGET_ID CRIS_ELF_DATA
4327 #define ELF_MACHINE_CODE EM_CRIS
4328 #define ELF_MAXPAGESIZE 0x2000
4329
4330 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4331 #define TARGET_LITTLE_NAME "elf32-cris"
4332 #define elf_symbol_leading_char 0
4333
4334 #define elf_info_to_howto_rel NULL
4335 #define elf_info_to_howto cris_info_to_howto_rela
4336 #define elf_backend_relocate_section cris_elf_relocate_section
4337 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4338 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4339 #define elf_backend_plt_sym_val cris_elf_plt_sym_val
4340 #define elf_backend_check_relocs cris_elf_check_relocs
4341 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4342 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4343
4344 #define elf_backend_can_gc_sections 1
4345 #define elf_backend_can_refcount 1
4346
4347 #define elf_backend_object_p cris_elf_object_p
4348 #define elf_backend_final_write_processing \
4349 cris_elf_final_write_processing
4350 #define bfd_elf32_bfd_print_private_bfd_data \
4351 cris_elf_print_private_bfd_data
4352 #define bfd_elf32_bfd_merge_private_bfd_data \
4353 cris_elf_merge_private_bfd_data
4354 #define bfd_elf32_bfd_copy_private_bfd_data \
4355 cris_elf_copy_private_bfd_data
4356
4357 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4358 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4359
4360 #define bfd_elf32_bfd_link_hash_table_create \
4361 elf_cris_link_hash_table_create
4362 #define elf_backend_adjust_dynamic_symbol \
4363 elf_cris_adjust_dynamic_symbol
4364 #define elf_backend_copy_indirect_symbol \
4365 elf_cris_copy_indirect_symbol
4366 #define elf_backend_size_dynamic_sections \
4367 elf_cris_size_dynamic_sections
4368 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4369 #define elf_backend_finish_dynamic_symbol \
4370 elf_cris_finish_dynamic_symbol
4371 #define elf_backend_finish_dynamic_sections \
4372 elf_cris_finish_dynamic_sections
4373 #define elf_backend_create_dynamic_sections \
4374 _bfd_elf_create_dynamic_sections
4375 #define bfd_elf32_bfd_final_link \
4376 bfd_elf_gc_common_final_link
4377 #define elf_backend_hide_symbol elf_cris_hide_symbol
4378 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4379
4380 #define elf_backend_want_got_plt 1
4381 #define elf_backend_plt_readonly 1
4382 #define elf_backend_want_plt_sym 0
4383 #define elf_backend_got_header_size 12
4384 #define elf_backend_got_elt_size elf_cris_got_elt_size
4385
4386 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4387 linking and libraries (if it's a win of any significance). Until then,
4388 take the easy route. */
4389 #define elf_backend_may_use_rel_p 0
4390 #define elf_backend_may_use_rela_p 1
4391 #define elf_backend_rela_normal 1
4392
4393 #include "elf32-target.h"
4394
4395 #undef TARGET_LITTLE_SYM
4396 #undef TARGET_LITTLE_NAME
4397 #undef elf_symbol_leading_char
4398
4399 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4400 #define TARGET_LITTLE_NAME "elf32-us-cris"
4401 #define elf_symbol_leading_char '_'
4402 #undef elf32_bed
4403 #define elf32_bed elf32_us_cris_bed
4404
4405 #include "elf32-target.h"
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