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[deliverable/binutils-gdb.git] / bfd / elf32-cris.c
1 /* CRIS-specific support for 32-bit ELF.
2 Copyright (C) 2000-2015 Free Software Foundation, Inc.
3 Contributed by Axis Communications AB.
4 Written by Hans-Peter Nilsson, based on elf32-fr30.c
5 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "libbfd.h"
27 #include "elf-bfd.h"
28 #include "elf/cris.h"
29 #include <limits.h>
30
31 bfd_reloc_status_type
32 cris_elf_pcrel_reloc (bfd *, arelent *, asymbol *, void *,
33 asection *, bfd *, char **);
34 static bfd_boolean
35 cris_elf_set_mach_from_flags (bfd *, unsigned long);
36
37 /* Forward declarations. */
38 static reloc_howto_type cris_elf_howto_table [] =
39 {
40 /* This reloc does nothing. */
41 HOWTO (R_CRIS_NONE, /* type */
42 0, /* rightshift */
43 2, /* size (0 = byte, 1 = short, 2 = long) */
44 32, /* bitsize */
45 FALSE, /* pc_relative */
46 0, /* bitpos */
47 complain_overflow_bitfield, /* complain_on_overflow */
48 bfd_elf_generic_reloc, /* special_function */
49 "R_CRIS_NONE", /* name */
50 FALSE, /* partial_inplace */
51 0, /* src_mask */
52 0, /* dst_mask */
53 FALSE), /* pcrel_offset */
54
55 /* An 8 bit absolute relocation. */
56 HOWTO (R_CRIS_8, /* type */
57 0, /* rightshift */
58 0, /* size (0 = byte, 1 = short, 2 = long) */
59 8, /* bitsize */
60 FALSE, /* pc_relative */
61 0, /* bitpos */
62 complain_overflow_bitfield, /* complain_on_overflow */
63 bfd_elf_generic_reloc, /* special_function */
64 "R_CRIS_8", /* name */
65 FALSE, /* partial_inplace */
66 0x0000, /* src_mask */
67 0x00ff, /* dst_mask */
68 FALSE), /* pcrel_offset */
69
70 /* A 16 bit absolute relocation. */
71 HOWTO (R_CRIS_16, /* type */
72 0, /* rightshift */
73 1, /* size (0 = byte, 1 = short, 2 = long) */
74 16, /* bitsize */
75 FALSE, /* pc_relative */
76 0, /* bitpos */
77 complain_overflow_bitfield, /* complain_on_overflow */
78 bfd_elf_generic_reloc, /* special_function */
79 "R_CRIS_16", /* name */
80 FALSE, /* partial_inplace */
81 0x00000000, /* src_mask */
82 0x0000ffff, /* dst_mask */
83 FALSE), /* pcrel_offset */
84
85 /* A 32 bit absolute relocation. */
86 HOWTO (R_CRIS_32, /* type */
87 0, /* rightshift */
88 2, /* size (0 = byte, 1 = short, 2 = long) */
89 32, /* bitsize */
90 FALSE, /* pc_relative */
91 0, /* bitpos */
92 /* We don't want overflow complaints for 64-bit vma builds
93 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
94 32-bit ELF) where sym=0xc0001234.
95 Don't do this for the PIC relocs, as we don't expect to
96 see them with large offsets. */
97 complain_overflow_dont, /* complain_on_overflow */
98 bfd_elf_generic_reloc, /* special_function */
99 "R_CRIS_32", /* name */
100 FALSE, /* partial_inplace */
101 0x00000000, /* src_mask */
102 0xffffffff, /* dst_mask */
103 FALSE), /* pcrel_offset */
104
105 /* An 8 bit PC-relative relocation. */
106 HOWTO (R_CRIS_8_PCREL, /* type */
107 0, /* rightshift */
108 0, /* size (0 = byte, 1 = short, 2 = long) */
109 8, /* bitsize */
110 TRUE, /* pc_relative */
111 0, /* bitpos */
112 complain_overflow_bitfield, /* complain_on_overflow */
113 cris_elf_pcrel_reloc, /* special_function */
114 "R_CRIS_8_PCREL", /* name */
115 FALSE, /* partial_inplace */
116 0x0000, /* src_mask */
117 0x00ff, /* dst_mask */
118 TRUE), /* pcrel_offset */
119
120 /* A 16 bit PC-relative relocation. */
121 HOWTO (R_CRIS_16_PCREL, /* type */
122 0, /* rightshift */
123 1, /* size (0 = byte, 1 = short, 2 = long) */
124 16, /* bitsize */
125 TRUE, /* pc_relative */
126 0, /* bitpos */
127 complain_overflow_bitfield, /* complain_on_overflow */
128 cris_elf_pcrel_reloc, /* special_function */
129 "R_CRIS_16_PCREL", /* name */
130 FALSE, /* partial_inplace */
131 0x00000000, /* src_mask */
132 0x0000ffff, /* dst_mask */
133 TRUE), /* pcrel_offset */
134
135 /* A 32 bit PC-relative relocation. */
136 HOWTO (R_CRIS_32_PCREL, /* type */
137 0, /* rightshift */
138 2, /* size (0 = byte, 1 = short, 2 = long) */
139 32, /* bitsize */
140 TRUE, /* pc_relative */
141 0, /* bitpos */
142 complain_overflow_bitfield, /* complain_on_overflow */
143 cris_elf_pcrel_reloc, /* special_function */
144 "R_CRIS_32_PCREL", /* name */
145 FALSE, /* partial_inplace */
146 0x00000000, /* src_mask */
147 0xffffffff, /* dst_mask */
148 TRUE), /* pcrel_offset */
149
150 /* GNU extension to record C++ vtable hierarchy. */
151 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
152 0, /* rightshift */
153 2, /* size (0 = byte, 1 = short, 2 = long) */
154 0, /* bitsize */
155 FALSE, /* pc_relative */
156 0, /* bitpos */
157 complain_overflow_dont, /* complain_on_overflow */
158 NULL, /* special_function */
159 "R_CRIS_GNU_VTINHERIT", /* name */
160 FALSE, /* partial_inplace */
161 0, /* src_mask */
162 0, /* dst_mask */
163 FALSE), /* pcrel_offset */
164
165 /* GNU extension to record C++ vtable member usage. */
166 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
167 0, /* rightshift */
168 2, /* size (0 = byte, 1 = short, 2 = long) */
169 0, /* bitsize */
170 FALSE, /* pc_relative */
171 0, /* bitpos */
172 complain_overflow_dont, /* complain_on_overflow */
173 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
174 "R_CRIS_GNU_VTENTRY", /* name */
175 FALSE, /* partial_inplace */
176 0, /* src_mask */
177 0, /* dst_mask */
178 FALSE), /* pcrel_offset */
179
180 /* This is used only by the dynamic linker. The symbol should exist
181 both in the object being run and in some shared library. The
182 dynamic linker copies the data addressed by the symbol from the
183 shared library into the object, because the object being
184 run has to have the data at some particular address. */
185 HOWTO (R_CRIS_COPY, /* type */
186 0, /* rightshift */
187 2, /* size (0 = byte, 1 = short, 2 = long) */
188 32, /* bitsize */
189 FALSE, /* pc_relative */
190 0, /* bitpos */
191 complain_overflow_bitfield, /* complain_on_overflow */
192 bfd_elf_generic_reloc, /* special_function */
193 "R_CRIS_COPY", /* name */
194 FALSE, /* partial_inplace */
195 0, /* src_mask */
196 0, /* dst_mask */
197 FALSE), /* pcrel_offset */
198
199 /* Like R_CRIS_32, but used when setting global offset table entries. */
200 HOWTO (R_CRIS_GLOB_DAT, /* type */
201 0, /* rightshift */
202 2, /* size (0 = byte, 1 = short, 2 = long) */
203 32, /* bitsize */
204 FALSE, /* pc_relative */
205 0, /* bitpos */
206 complain_overflow_bitfield, /* complain_on_overflow */
207 bfd_elf_generic_reloc, /* special_function */
208 "R_CRIS_GLOB_DAT", /* name */
209 FALSE, /* partial_inplace */
210 0, /* src_mask */
211 0xffffffff, /* dst_mask */
212 FALSE), /* pcrel_offset */
213
214 /* Marks a procedure linkage table entry for a symbol. */
215 HOWTO (R_CRIS_JUMP_SLOT, /* type */
216 0, /* rightshift */
217 2, /* size (0 = byte, 1 = short, 2 = long) */
218 32, /* bitsize */
219 FALSE, /* pc_relative */
220 0, /* bitpos */
221 complain_overflow_bitfield, /* complain_on_overflow */
222 bfd_elf_generic_reloc, /* special_function */
223 "R_CRIS_JUMP_SLOT", /* name */
224 FALSE, /* partial_inplace */
225 0, /* src_mask */
226 0, /* dst_mask */
227 FALSE), /* pcrel_offset */
228
229 /* Used only by the dynamic linker. When the object is run, this
230 longword is set to the load address of the object, plus the
231 addend. */
232 HOWTO (R_CRIS_RELATIVE, /* type */
233 0, /* rightshift */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
235 32, /* bitsize */
236 FALSE, /* pc_relative */
237 0, /* bitpos */
238 complain_overflow_bitfield, /* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_CRIS_RELATIVE", /* name */
241 FALSE, /* partial_inplace */
242 0, /* src_mask */
243 0xffffffff, /* dst_mask */
244 FALSE), /* pcrel_offset */
245
246 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
247 HOWTO (R_CRIS_16_GOT, /* type */
248 0, /* rightshift */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
251 FALSE, /* pc_relative */
252 0, /* bitpos */
253 complain_overflow_bitfield, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_CRIS_16_GOT", /* name */
256 FALSE, /* partial_inplace */
257 0, /* src_mask */
258 0xffff, /* dst_mask */
259 FALSE), /* pcrel_offset */
260
261 HOWTO (R_CRIS_32_GOT, /* type */
262 0, /* rightshift */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
264 32, /* bitsize */
265 FALSE, /* pc_relative */
266 0, /* bitpos */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_CRIS_32_GOT", /* name */
270 FALSE, /* partial_inplace */
271 0, /* src_mask */
272 0xffffffff, /* dst_mask */
273 FALSE), /* pcrel_offset */
274
275 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
276 the GOT table for the symbol. */
277 HOWTO (R_CRIS_16_GOTPLT, /* type */
278 0, /* rightshift */
279 1, /* size (0 = byte, 1 = short, 2 = long) */
280 16, /* bitsize */
281 FALSE, /* pc_relative */
282 0, /* bitpos */
283 complain_overflow_bitfield, /* complain_on_overflow */
284 bfd_elf_generic_reloc, /* special_function */
285 "R_CRIS_16_GOTPLT", /* name */
286 FALSE, /* partial_inplace */
287 0, /* src_mask */
288 0xffff, /* dst_mask */
289 FALSE), /* pcrel_offset */
290
291 HOWTO (R_CRIS_32_GOTPLT, /* type */
292 0, /* rightshift */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
294 32, /* bitsize */
295 FALSE, /* pc_relative */
296 0, /* bitpos */
297 complain_overflow_bitfield, /* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_CRIS_32_GOTPLT", /* name */
300 FALSE, /* partial_inplace */
301 0, /* src_mask */
302 0xffffffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
304
305 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
306 be necessary. */
307 HOWTO (R_CRIS_32_GOTREL, /* type */
308 0, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 32, /* bitsize */
311 FALSE, /* pc_relative */
312 0, /* bitpos */
313 complain_overflow_bitfield, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_CRIS_32_GOTREL", /* name */
316 FALSE, /* partial_inplace */
317 0, /* src_mask */
318 0xffffffff, /* dst_mask */
319 FALSE), /* pcrel_offset */
320
321 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
322 to create PLT entry for symbol. */
323 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
324 0, /* rightshift */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
326 32, /* bitsize */
327 FALSE, /* pc_relative */
328 0, /* bitpos */
329 complain_overflow_bitfield, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_CRIS_32_PLT_GOTREL", /* name */
332 FALSE, /* partial_inplace */
333 0, /* src_mask */
334 0xffffffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
336
337 /* A 32-bit offset from PC (location after the relocation) + addend to
338 entry for this symbol in PLT and request to create PLT entry for
339 symbol. */
340 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
341 0, /* rightshift */
342 2, /* size (0 = byte, 1 = short, 2 = long) */
343 32, /* bitsize */
344 TRUE, /* pc_relative */
345 0, /* bitpos */
346 complain_overflow_bitfield, /* complain_on_overflow */
347 cris_elf_pcrel_reloc, /* special_function */
348 "R_CRIS_32_PLT_PCREL", /* name */
349 FALSE, /* partial_inplace */
350 0, /* src_mask */
351 0xffffffff, /* dst_mask */
352 TRUE), /* pcrel_offset */
353
354 /* We don't handle these in any special manner and cross-format
355 linking is not supported; just recognize them enough to pass them
356 around. FIXME: do the same for most PIC relocs and add sanity
357 tests to actually refuse gracefully to handle these and PIC
358 relocs for cross-format linking. */
359 #define TLSHOWTO32(name) \
360 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
361 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
362 #define TLSHOWTO16X(name, X) \
363 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
364 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
365 #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
366 #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
367
368 TLSHOWTO32 (R_CRIS_32_GOT_GD),
369 TLSHOWTO16 (R_CRIS_16_GOT_GD),
370 TLSHOWTO32 (R_CRIS_32_GD),
371 TLSHOWTO32 (R_CRIS_DTP),
372 TLSHOWTO32 (R_CRIS_32_DTPREL),
373 TLSHOWTO16S (R_CRIS_16_DTPREL),
374 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
375 TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
376 TLSHOWTO32 (R_CRIS_32_TPREL),
377 TLSHOWTO16S (R_CRIS_16_TPREL),
378 TLSHOWTO32 (R_CRIS_DTPMOD),
379 TLSHOWTO32 (R_CRIS_32_IE)
380 };
381 \f
382 /* Map BFD reloc types to CRIS ELF reloc types. */
383
384 struct cris_reloc_map
385 {
386 bfd_reloc_code_real_type bfd_reloc_val;
387 unsigned int cris_reloc_val;
388 };
389
390 static const struct cris_reloc_map cris_reloc_map [] =
391 {
392 { BFD_RELOC_NONE, R_CRIS_NONE },
393 { BFD_RELOC_8, R_CRIS_8 },
394 { BFD_RELOC_16, R_CRIS_16 },
395 { BFD_RELOC_32, R_CRIS_32 },
396 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
397 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
398 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
399 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
400 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
401 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
402 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
403 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
404 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
405 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
406 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
407 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
408 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
409 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
410 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
411 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
412 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
413 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
414 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
415 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
416 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
417 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
418 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
419 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
420 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
421 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
422 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
423 { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
424 };
425
426 static reloc_howto_type *
427 cris_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
428 bfd_reloc_code_real_type code)
429 {
430 unsigned int i;
431
432 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
433 if (cris_reloc_map [i].bfd_reloc_val == code)
434 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
435
436 return NULL;
437 }
438
439 static reloc_howto_type *
440 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
441 {
442 unsigned int i;
443
444 for (i = 0;
445 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
446 i++)
447 if (cris_elf_howto_table[i].name != NULL
448 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
449 return &cris_elf_howto_table[i];
450
451 return NULL;
452 }
453
454 /* Set the howto pointer for an CRIS ELF reloc. */
455
456 static void
457 cris_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
458 arelent * cache_ptr,
459 Elf_Internal_Rela * dst)
460 {
461 enum elf_cris_reloc_type r_type;
462
463 r_type = ELF32_R_TYPE (dst->r_info);
464 if (r_type >= R_CRIS_max)
465 {
466 _bfd_error_handler (_("%A: invalid CRIS reloc number: %d"), abfd, r_type);
467 r_type = 0;
468 }
469 cache_ptr->howto = & cris_elf_howto_table [r_type];
470 }
471
472 bfd_reloc_status_type
473 cris_elf_pcrel_reloc (bfd *abfd ATTRIBUTE_UNUSED,
474 arelent *reloc_entry,
475 asymbol *symbol,
476 void * data ATTRIBUTE_UNUSED,
477 asection *input_section,
478 bfd *output_bfd,
479 char **error_message ATTRIBUTE_UNUSED)
480 {
481 /* By default (using only bfd_elf_generic_reloc when linking to
482 non-ELF formats) PC-relative relocs are relative to the beginning
483 of the reloc. CRIS PC-relative relocs are relative to the position
484 *after* the reloc because that's what pre-CRISv32 PC points to
485 after reading an insn field with that reloc. (For CRISv32, PC is
486 actually relative to the start of the insn, but we keep the old
487 definition.) Still, we use as much generic machinery as we can.
488
489 Only adjust when doing a final link. */
490 if (output_bfd == (bfd *) NULL)
491 reloc_entry->addend -= 1 << reloc_entry->howto->size;
492
493 return
494 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
495 input_section, output_bfd, error_message);
496 }
497 \f
498 /* Support for core dump NOTE sections.
499 The slightly unintuitive code layout is an attempt to keep at least
500 some similarities with other ports, hoping to simplify general
501 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
502
503 static bfd_boolean
504 cris_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
505 {
506 int offset;
507 size_t size;
508
509 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
510 switch (note->descsz)
511 {
512 default:
513 return FALSE;
514
515 case 202: /* Linux/CRISv32 */
516 /* pr_cursig */
517 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
518
519 /* pr_pid */
520 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
521
522 /* pr_reg */
523 offset = 70;
524 size = 128;
525
526 break;
527 }
528 else
529 switch (note->descsz)
530 {
531 default:
532 return FALSE;
533
534 case 214: /* Linux/CRIS */
535 /* pr_cursig */
536 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
537
538 /* pr_pid */
539 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
540
541 /* pr_reg */
542 offset = 70;
543 size = 140;
544
545 break;
546 }
547
548 /* Make a ".reg/999" section. */
549 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
550 size, note->descpos + offset);
551 }
552
553 static bfd_boolean
554 cris_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
555 {
556 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
557 switch (note->descsz)
558 {
559 default:
560 return FALSE;
561
562 case 124: /* Linux/CRISv32 elf_prpsinfo */
563 elf_tdata (abfd)->core->program
564 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
565 elf_tdata (abfd)->core->command
566 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
567 }
568 else
569 switch (note->descsz)
570 {
571 default:
572 return FALSE;
573
574 case 124: /* Linux/CRIS elf_prpsinfo */
575 elf_tdata (abfd)->core->program
576 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
577 elf_tdata (abfd)->core->command
578 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
579 }
580
581 /* Note that for some reason, a spurious space is tacked
582 onto the end of the args in some (at least one anyway)
583 implementations, so strip it off if it exists. */
584
585 {
586 char *command = elf_tdata (abfd)->core->command;
587 int n = strlen (command);
588
589 if (0 < n && command[n - 1] == ' ')
590 command[n - 1] = '\0';
591 }
592
593 return TRUE;
594 }
595 \f
596 /* The name of the dynamic interpreter. This is put in the .interp
597 section. */
598
599 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
600
601 /* The size in bytes of an entry in the procedure linkage table. */
602
603 #define PLT_ENTRY_SIZE 20
604 #define PLT_ENTRY_SIZE_V32 26
605
606 /* The first entry in an absolute procedure linkage table looks like this. */
607
608 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
609 {
610 0xfc, 0xe1,
611 0x7e, 0x7e, /* push mof. */
612 0x7f, 0x0d, /* (dip [pc+]) */
613 0, 0, 0, 0, /* Replaced with address of .got + 4. */
614 0x30, 0x7a, /* move [...],mof */
615 0x7f, 0x0d, /* (dip [pc+]) */
616 0, 0, 0, 0, /* Replaced with address of .got + 8. */
617 0x30, 0x09 /* jump [...] */
618 };
619
620 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
621 {
622 0x84, 0xe2, /* subq 4,$sp */
623 0x6f, 0xfe, /* move.d 0,$acr */
624 0, 0, 0, 0, /* Replaced by address of .got + 4. */
625 0x7e, 0x7a, /* move $mof,[$sp] */
626 0x3f, 0x7a, /* move [$acr],$mof */
627 0x04, 0xf2, /* addq 4,acr */
628 0x6f, 0xfa, /* move.d [$acr],$acr */
629 0xbf, 0x09, /* jump $acr */
630 0xb0, 0x05, /* nop */
631 0, 0 /* Pad out to 26 bytes. */
632 };
633
634 /* Subsequent entries in an absolute procedure linkage table look like
635 this. */
636
637 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
638 {
639 0x7f, 0x0d, /* (dip [pc+]) */
640 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
641 0x30, 0x09, /* jump [...] */
642 0x3f, 0x7e, /* move [pc+],mof */
643 0, 0, 0, 0, /* Replaced with offset into relocation table. */
644 0x2f, 0xfe, /* add.d [pc+],pc */
645 0xec, 0xff,
646 0xff, 0xff /* Replaced with offset to start of .plt. */
647 };
648
649 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
650 {
651 0x6f, 0xfe, /* move.d 0,$acr */
652 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
653 0x6f, 0xfa, /* move.d [$acr],$acr */
654 0xbf, 0x09, /* jump $acr */
655 0xb0, 0x05, /* nop */
656 0x3f, 0x7e, /* move 0,mof */
657 0, 0, 0, 0, /* Replaced with offset into relocation table. */
658 0xbf, 0x0e, /* ba start_of_plt0_entry */
659 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
660 0xb0, 0x05 /* nop */
661 };
662
663 /* The first entry in a PIC procedure linkage table looks like this. */
664
665 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
666 {
667 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
668 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
669 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
670 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
671 };
672
673 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
674 {
675 0x84, 0xe2, /* subq 4,$sp */
676 0x04, 0x01, /* addoq 4,$r0,$acr */
677 0x7e, 0x7a, /* move $mof,[$sp] */
678 0x3f, 0x7a, /* move [$acr],$mof */
679 0x04, 0xf2, /* addq 4,$acr */
680 0x6f, 0xfa, /* move.d [$acr],$acr */
681 0xbf, 0x09, /* jump $acr */
682 0xb0, 0x05, /* nop */
683 0, 0, /* Pad out to 26 bytes. */
684 0, 0, 0, 0,
685 0, 0, 0, 0
686 };
687
688 /* Subsequent entries in a PIC procedure linkage table look like this. */
689
690 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
691 {
692 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
693 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
694 0x30, 0x09, /* jump [...] */
695 0x3f, 0x7e, /* move [pc+],mof */
696 0, 0, 0, 0, /* Replaced with offset into relocation table. */
697 0x2f, 0xfe, /* add.d [pc+],pc */
698 0xec, 0xff, /* Replaced with offset to start of .plt. */
699 0xff, 0xff
700 };
701
702 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
703 {
704 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
705 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
706 0x6f, 0xfa, /* move.d [$acr],$acr */
707 0xbf, 0x09, /* jump $acr */
708 0xb0, 0x05, /* nop */
709 0x3f, 0x7e, /* move relocoffs,$mof */
710 0, 0, 0, 0, /* Replaced with offset into relocation table. */
711 0xbf, 0x0e, /* ba start_of_plt */
712 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
713 0xb0, 0x05 /* nop */
714 };
715 \f
716 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
717 (and most other PIC/shlib stuff). Check that we don't drift away
718 without reason.
719
720 The CRIS linker, like the m68k and i386 linkers (and probably the rest
721 too) needs to keep track of the number of relocs that it decides to
722 copy in check_relocs for each symbol. This is so that it can discard
723 PC relative relocs if it doesn't need them when linking with
724 -Bsymbolic. We store the information in a field extending the regular
725 ELF linker hash table. */
726
727 /* This structure keeps track of the number of PC relative relocs we have
728 copied for a given symbol. */
729
730 struct elf_cris_pcrel_relocs_copied
731 {
732 /* Next section. */
733 struct elf_cris_pcrel_relocs_copied *next;
734
735 /* A section in dynobj. */
736 asection *section;
737
738 /* Number of relocs copied in this section. */
739 bfd_size_type count;
740
741 /* Example of reloc being copied, for message. */
742 enum elf_cris_reloc_type r_type;
743 };
744
745 /* CRIS ELF linker hash entry. */
746
747 struct elf_cris_link_hash_entry
748 {
749 struct elf_link_hash_entry root;
750
751 /* Number of PC relative relocs copied for this symbol. */
752 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
753
754 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
755 both a general GOT and a PLT-specific GOT entry for the same symbol,
756 when it is referenced both as a function and as a function pointer.
757
758 Number of GOTPLT references for a function. */
759 bfd_signed_vma gotplt_refcount;
760
761 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
762 (zero is never used as an index). FIXME: We should be able to fold
763 this with gotplt_refcount in a union, like the got and plt unions in
764 elf_link_hash_entry. */
765 bfd_size_type gotplt_offset;
766
767 /* The root.got.refcount is the sum of the regular reference counts
768 (this) and those members below. We have to keep a separate count
769 to track when we've found the first (or last) reference to a
770 regular got entry. The offset is in root.got.offset. */
771 bfd_signed_vma reg_got_refcount;
772
773 /* Similar to the above, the number of reloc references to this
774 symbols that need a R_CRIS_32_TPREL slot. The offset is in
775 root.got.offset, because this and .dtp_refcount can't validly
776 happen when there's also a regular GOT entry; that's invalid
777 input for which an error is emitted. */
778 bfd_signed_vma tprel_refcount;
779
780 /* Similar to the above, the number of reloc references to this
781 symbols that need a R_CRIS_DTP slot. The offset is in
782 root.got.offset; plus 4 if .tprel_refcount > 0. */
783 bfd_signed_vma dtp_refcount;
784 };
785
786 static bfd_boolean
787 elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *,
788 void * );
789 static bfd_boolean
790 elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *,
791 void *);
792
793 /* The local_got_refcounts and local_got_offsets are a multiple of
794 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
795 refcount for GOT itself, see code), with the summary / group offset
796 for local symbols located at offset N, reference counts for
797 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
798 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
799 3*LSNUM. */
800
801 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
802 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
803 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
804 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
805
806 /* CRIS ELF linker hash table. */
807
808 struct elf_cris_link_hash_table
809 {
810 struct elf_link_hash_table root;
811
812 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
813 since we try and avoid creating GOTPLT:s when there's already a GOT.
814 Instead, we keep and update the next available index here. */
815 bfd_size_type next_gotplt_entry;
816
817 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
818 been seen for any input; if != 0, then the constant-offset
819 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
820 negative at relocation, so that we don't need an extra flag for
821 when the reloc is output. */
822 bfd_signed_vma dtpmod_refcount;
823 };
824
825 /* Traverse a CRIS ELF linker hash table. */
826
827 #define elf_cris_link_hash_traverse(table, func, info) \
828 (elf_link_hash_traverse \
829 (&(table)->root, \
830 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
831 (info)))
832
833 /* Get the CRIS ELF linker hash table from a link_info structure. */
834
835 #define elf_cris_hash_table(p) \
836 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
837 == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL)
838
839 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
840 "parent class"). The .root reference is just a simple type
841 check on the argument. */
842
843 #define elf_cris_hash_entry(p) \
844 ((struct elf_cris_link_hash_entry *) (&(p)->root))
845
846 /* Create an entry in a CRIS ELF linker hash table. */
847
848 static struct bfd_hash_entry *
849 elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry,
850 struct bfd_hash_table *table,
851 const char *string)
852 {
853 struct elf_cris_link_hash_entry *ret =
854 (struct elf_cris_link_hash_entry *) entry;
855
856 /* Allocate the structure if it has not already been allocated by a
857 subclass. */
858 if (ret == (struct elf_cris_link_hash_entry *) NULL)
859 ret = ((struct elf_cris_link_hash_entry *)
860 bfd_hash_allocate (table,
861 sizeof (struct elf_cris_link_hash_entry)));
862 if (ret == (struct elf_cris_link_hash_entry *) NULL)
863 return (struct bfd_hash_entry *) ret;
864
865 /* Call the allocation method of the superclass. */
866 ret = ((struct elf_cris_link_hash_entry *)
867 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
868 table, string));
869 if (ret != (struct elf_cris_link_hash_entry *) NULL)
870 {
871 ret->pcrel_relocs_copied = NULL;
872 ret->gotplt_refcount = 0;
873 ret->gotplt_offset = 0;
874 ret->dtp_refcount = 0;
875 ret->tprel_refcount = 0;
876 ret->reg_got_refcount = 0;
877 }
878
879 return (struct bfd_hash_entry *) ret;
880 }
881
882 /* Create a CRIS ELF linker hash table. */
883
884 static struct bfd_link_hash_table *
885 elf_cris_link_hash_table_create (bfd *abfd)
886 {
887 struct elf_cris_link_hash_table *ret;
888 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
889
890 ret = ((struct elf_cris_link_hash_table *) bfd_zmalloc (amt));
891 if (ret == (struct elf_cris_link_hash_table *) NULL)
892 return NULL;
893
894 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
895 elf_cris_link_hash_newfunc,
896 sizeof (struct elf_cris_link_hash_entry),
897 CRIS_ELF_DATA))
898 {
899 free (ret);
900 return NULL;
901 }
902
903 /* Initialize to skip over the first three entries in the gotplt; they
904 are used for run-time symbol evaluation. */
905 ret->next_gotplt_entry = 12;
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, ignored;
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, ignored);
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 (info, 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 /* PR15323, ref flags aren't set for references in the same
3185 object. */
3186 h->root.non_ir_ref = 1;
3187 }
3188
3189 r_type = ELF32_R_TYPE (rel->r_info);
3190
3191 /* Some relocs require linker-created sections; we need to hang them
3192 on the first input bfd we found that contained dynamic relocs. */
3193 switch (r_type)
3194 {
3195 case R_CRIS_32_DTPREL:
3196 if ((sec->flags & SEC_ALLOC) == 0)
3197 /* This'd be a .dtpreld entry in e.g. debug info. We have
3198 several different switch statements below, but none of
3199 that is needed; we need no preparations for resolving
3200 R_CRIS_32_DTPREL into a non-allocated section (debug
3201 info), so let's just move on to the next
3202 relocation. */
3203 continue;
3204 /* Fall through. */
3205 case R_CRIS_16_DTPREL:
3206 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3207 entry at index 3. */
3208 if (htab->dtpmod_refcount == 0)
3209 htab->next_gotplt_entry += 8;
3210
3211 htab->dtpmod_refcount++;
3212 /* Fall through. */
3213
3214 case R_CRIS_32_IE:
3215 case R_CRIS_32_GD:
3216 case R_CRIS_16_GOT_GD:
3217 case R_CRIS_32_GOT_GD:
3218 case R_CRIS_32_GOT_TPREL:
3219 case R_CRIS_16_GOT_TPREL:
3220 case R_CRIS_16_GOT:
3221 case R_CRIS_32_GOT:
3222 case R_CRIS_32_GOTREL:
3223 case R_CRIS_32_PLT_GOTREL:
3224 case R_CRIS_32_PLT_PCREL:
3225 case R_CRIS_16_GOTPLT:
3226 case R_CRIS_32_GOTPLT:
3227 if (dynobj == NULL)
3228 {
3229 elf_hash_table (info)->dynobj = dynobj = abfd;
3230
3231 /* We could handle this if we can get a handle on the
3232 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3233 that, we must insist on dynobj being a specific mach. */
3234 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3235 {
3236 (*_bfd_error_handler)
3237 (_("%B, section %A:\n v10/v32 compatible object %s"
3238 " must not contain a PIC relocation"),
3239 abfd, sec);
3240 return FALSE;
3241 }
3242 }
3243
3244 if (sgot == NULL)
3245 {
3246 /* We may have a dynobj but no .got section, if machine-
3247 independent parts of the linker found a reason to create
3248 a dynobj. We want to create the .got section now, so we
3249 can assume it's always present whenever there's a dynobj.
3250 It's ok to call this function more than once. */
3251 if (!_bfd_elf_create_got_section (dynobj, info))
3252 return FALSE;
3253
3254 sgot = bfd_get_linker_section (dynobj, ".got");
3255 }
3256
3257 if (local_got_refcounts == NULL)
3258 {
3259 bfd_size_type amt;
3260
3261 /* We use index local_got_refcounts[-1] to count all
3262 GOT-relative relocations that do not have explicit
3263 GOT entries. */
3264 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3265 amt *= sizeof (bfd_signed_vma);
3266 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3267 if (local_got_refcounts == NULL)
3268 return FALSE;
3269
3270 local_got_refcounts++;
3271 elf_local_got_refcounts (abfd) = local_got_refcounts;
3272 }
3273 break;
3274
3275 default:
3276 break;
3277 }
3278
3279 /* Some relocs require a global offset table (but perhaps not a
3280 specific GOT entry). */
3281 switch (r_type)
3282 {
3283 case R_CRIS_16_DTPREL:
3284 case R_CRIS_32_DTPREL:
3285 /* Not requesting .got.rela for an executable: the contents
3286 of the first entry is constant there. For a shared
3287 library, we need .got.rela for the R_CRIS_DTPMOD
3288 relocation at index 3. */
3289 if (!info->shared)
3290 break;
3291 /* Fall through. */
3292
3293 case R_CRIS_32_IE:
3294 case R_CRIS_32_GD:
3295 case R_CRIS_16_GOT_GD:
3296 case R_CRIS_32_GOT_GD:
3297 case R_CRIS_32_GOT_TPREL:
3298 case R_CRIS_16_GOT_TPREL:
3299 /* Fall through. */
3300
3301 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3302 entry only for local symbols. Unfortunately, we don't know
3303 until later on if there's a version script that forces the
3304 symbol local. We must have the .rela.got section in place
3305 before we know if the symbol looks global now, so we need
3306 to treat the reloc just like for R_CRIS_16_GOT and
3307 R_CRIS_32_GOT. */
3308 case R_CRIS_16_GOTPLT:
3309 case R_CRIS_32_GOTPLT:
3310 case R_CRIS_16_GOT:
3311 case R_CRIS_32_GOT:
3312 if (srelgot == NULL
3313 && (h != NULL || info->shared))
3314 {
3315 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
3316 if (srelgot == NULL)
3317 {
3318 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3319 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3320 | SEC_READONLY);
3321 srelgot = bfd_make_section_anyway_with_flags (dynobj,
3322 ".rela.got",
3323 flags);
3324 if (srelgot == NULL
3325 || !bfd_set_section_alignment (dynobj, srelgot, 2))
3326 return FALSE;
3327 }
3328 }
3329 break;
3330
3331 default:
3332 break;
3333 }
3334
3335 /* Warn and error for invalid input. */
3336 switch (r_type)
3337 {
3338 case R_CRIS_32_IE:
3339 case R_CRIS_32_TPREL:
3340 case R_CRIS_16_TPREL:
3341 case R_CRIS_32_GD:
3342 if (info->shared)
3343 {
3344 (*_bfd_error_handler)
3345 (_("%B, section %A:\n relocation %s not valid"
3346 " in a shared object;"
3347 " typically an option mixup, recompile with -fPIC"),
3348 abfd,
3349 sec,
3350 cris_elf_howto_table[r_type].name);
3351 /* Don't return FALSE here; we want messages for all of
3352 these and the error behavior is ungraceful
3353 anyway. */
3354 }
3355 default:
3356 break;
3357 }
3358
3359 switch (r_type)
3360 {
3361 case R_CRIS_32_GD:
3362 case R_CRIS_16_GOT_GD:
3363 case R_CRIS_32_GOT_GD:
3364 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3365 got_element_size = 8;
3366 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3367 break;
3368
3369 case R_CRIS_16_DTPREL:
3370 case R_CRIS_32_DTPREL:
3371 /* These two just request for the constant-index
3372 module-local tls_index-sized GOT entry, which we add
3373 elsewhere. */
3374 break;
3375
3376 case R_CRIS_32_IE:
3377 case R_CRIS_32_GOT_TPREL:
3378 case R_CRIS_16_GOT_TPREL:
3379 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3380
3381 /* Those relocs also require that a DSO is of type
3382 Initial Exec. Like other targets, we don't reset this
3383 flag even if the relocs are GC:ed away. */
3384 if (info->shared)
3385 info->flags |= DF_STATIC_TLS;
3386 break;
3387
3388 /* Let's list the other assembler-generated TLS-relocs too,
3389 just to show that they're not forgotten. */
3390 case R_CRIS_16_TPREL:
3391 case R_CRIS_32_TPREL:
3392 default:
3393 break;
3394 }
3395
3396 switch (r_type)
3397 {
3398 case R_CRIS_16_GOTPLT:
3399 case R_CRIS_32_GOTPLT:
3400 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3401 entry) is eliminated. We can only do this for a non-local
3402 symbol. */
3403 if (h != NULL)
3404 {
3405 elf_cris_hash_entry (h)->gotplt_refcount++;
3406 goto handle_gotplt_reloc;
3407 }
3408 /* If h is NULL then this is a local symbol, and we must make a
3409 GOT entry for it, so handle it like a GOT reloc. */
3410 /* Fall through. */
3411
3412 case R_CRIS_32_IE:
3413 case R_CRIS_32_GD:
3414 case R_CRIS_16_GOT_GD:
3415 case R_CRIS_32_GOT_GD:
3416 case R_CRIS_32_GOT_TPREL:
3417 case R_CRIS_16_GOT_TPREL:
3418 case R_CRIS_16_GOT:
3419 case R_CRIS_32_GOT:
3420 /* This symbol requires a global offset table entry. */
3421 if (h != NULL)
3422 {
3423 if (h->got.refcount == 0)
3424 {
3425 /* Make sure this symbol is output as a dynamic symbol. */
3426 if (h->dynindx == -1)
3427 {
3428 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3429 return FALSE;
3430 }
3431 }
3432
3433 /* Update the sum of reloc counts for this symbol. */
3434 h->got.refcount++;
3435
3436 switch (r_type)
3437 {
3438 case R_CRIS_16_GOT:
3439 case R_CRIS_32_GOT:
3440 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3441 {
3442 /* Allocate space in the .got section. */
3443 sgot->size += got_element_size;
3444 /* Allocate relocation space. */
3445 srelgot->size += sizeof (Elf32_External_Rela);
3446 }
3447 elf_cris_hash_entry (h)->reg_got_refcount++;
3448 break;
3449
3450 case R_CRIS_32_GD:
3451 case R_CRIS_16_GOT_GD:
3452 case R_CRIS_32_GOT_GD:
3453 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3454 {
3455 /* Allocate space in the .got section. */
3456 sgot->size += got_element_size;
3457 /* Allocate relocation space. */
3458 srelgot->size += sizeof (Elf32_External_Rela);
3459 }
3460 elf_cris_hash_entry (h)->dtp_refcount++;
3461 break;
3462
3463 case R_CRIS_32_IE:
3464 case R_CRIS_32_GOT_TPREL:
3465 case R_CRIS_16_GOT_TPREL:
3466 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3467 {
3468 /* Allocate space in the .got section. */
3469 sgot->size += got_element_size;
3470 /* Allocate relocation space. */
3471 srelgot->size += sizeof (Elf32_External_Rela);
3472 }
3473 elf_cris_hash_entry (h)->tprel_refcount++;
3474 break;
3475
3476 default:
3477 BFD_FAIL ();
3478 break;
3479 }
3480 }
3481 else
3482 {
3483 /* This is a global offset table entry for a local symbol. */
3484 if (local_got_refcounts[r_symndx_lgot] == 0)
3485 {
3486 sgot->size += got_element_size;
3487 if (info->shared)
3488 {
3489 /* If we are generating a shared object, we need
3490 to output a R_CRIS_RELATIVE reloc so that the
3491 dynamic linker can adjust this GOT entry.
3492 Similarly for non-regular got entries. */
3493 srelgot->size += sizeof (Elf32_External_Rela);
3494 }
3495 }
3496 /* Update the reloc-specific count. */
3497 local_got_refcounts[r_symndx_lgot]++;
3498
3499 /* This one is the sum of all the others. */
3500 local_got_refcounts[r_symndx]++;
3501 }
3502 break;
3503
3504 case R_CRIS_16_DTPREL:
3505 case R_CRIS_32_DTPREL:
3506 case R_CRIS_32_GOTREL:
3507 /* This reference requires a global offset table.
3508 FIXME: The actual refcount isn't used currently; the .got
3509 section can't be removed if there were any references in the
3510 input. */
3511 local_got_refcounts[-1]++;
3512 break;
3513
3514 handle_gotplt_reloc:
3515
3516 case R_CRIS_32_PLT_GOTREL:
3517 /* This reference requires a global offset table. */
3518 local_got_refcounts[-1]++;
3519 /* Fall through. */
3520
3521 case R_CRIS_32_PLT_PCREL:
3522 /* This symbol requires a procedure linkage table entry. We
3523 actually build the entry in adjust_dynamic_symbol,
3524 because this might be a case of linking PIC code which is
3525 never referenced by a dynamic object, in which case we
3526 don't need to generate a procedure linkage table entry
3527 after all. */
3528
3529 /* Beware: if we'd check for visibility of the symbol here
3530 (and not marking the need for a PLT when non-visible), we'd
3531 get into trouble with keeping handling consistent with
3532 regards to relocs found before definition and GOTPLT
3533 handling. Eliminable PLT entries will be dealt with later
3534 anyway. */
3535 if (h == NULL)
3536 continue;
3537
3538 h->needs_plt = 1;
3539 h->plt.refcount++;
3540 break;
3541
3542 case R_CRIS_8:
3543 case R_CRIS_16:
3544 case R_CRIS_32:
3545 /* Let's help debug shared library creation. Any of these
3546 relocs *can* be used in shared libs, but pages containing
3547 them cannot be shared, so they're not appropriate for
3548 common use. Don't warn for sections we don't care about,
3549 such as debug sections or non-constant sections. We
3550 can't help tables of (global) function pointers, for
3551 example, though they must be emitted in a (writable) data
3552 section to avoid having impure text sections. */
3553 if (info->shared
3554 && (sec->flags & SEC_ALLOC) != 0
3555 && (sec->flags & SEC_READONLY) != 0)
3556 {
3557 /* FIXME: How do we make this optionally a warning only? */
3558 (*_bfd_error_handler)
3559 (_("%B, section %A:\n relocation %s should not"
3560 " be used in a shared object; recompile with -fPIC"),
3561 abfd,
3562 sec,
3563 cris_elf_howto_table[r_type].name);
3564 }
3565
3566 /* We don't need to handle relocs into sections not going into
3567 the "real" output. */
3568 if ((sec->flags & SEC_ALLOC) == 0)
3569 break;
3570
3571 if (h != NULL)
3572 {
3573 h->non_got_ref = 1;
3574
3575 /* Make sure a plt entry is created for this symbol if it
3576 turns out to be a function defined by a dynamic object. */
3577 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3578 h->plt.refcount++;
3579 }
3580
3581 /* If we are creating a shared library and this is not a local
3582 symbol, we need to copy the reloc into the shared library.
3583 However when linking with -Bsymbolic and this is a global
3584 symbol which is defined in an object we are including in the
3585 link (i.e., DEF_REGULAR is set), then we can resolve the
3586 reloc directly. At this point we have not seen all the input
3587 files, so it is possible that DEF_REGULAR is not set now but
3588 will be set later (it is never cleared). In case of a weak
3589 definition, DEF_REGULAR may be cleared later by a strong
3590 definition in a shared library. We account for that
3591 possibility below by storing information in the relocs_copied
3592 field of the hash table entry. A similar situation occurs
3593 when creating shared libraries and symbol visibility changes
3594 render the symbol local. */
3595
3596 /* No need to do anything if we're not creating a shared object. */
3597 if (! info->shared)
3598 break;
3599
3600 /* We may need to create a reloc section in the dynobj and made room
3601 for this reloc. */
3602 if (sreloc == NULL)
3603 {
3604 sreloc = _bfd_elf_make_dynamic_reloc_section
3605 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3606
3607 if (sreloc == NULL)
3608 return FALSE;
3609 }
3610
3611 if (sec->flags & SEC_READONLY)
3612 info->flags |= DF_TEXTREL;
3613
3614 sreloc->size += sizeof (Elf32_External_Rela);
3615 break;
3616
3617 case R_CRIS_8_PCREL:
3618 case R_CRIS_16_PCREL:
3619 case R_CRIS_32_PCREL:
3620 if (h != NULL)
3621 {
3622 h->non_got_ref = 1;
3623
3624 /* Make sure a plt entry is created for this symbol if it
3625 turns out to be a function defined by a dynamic object. */
3626 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3627 h->plt.refcount++;
3628 }
3629
3630 /* If we are creating a shared library and this is not a local
3631 symbol, we need to copy the reloc into the shared library.
3632 However when linking with -Bsymbolic and this is a global
3633 symbol which is defined in an object we are including in the
3634 link (i.e., DEF_REGULAR is set), then we can resolve the
3635 reloc directly. At this point we have not seen all the input
3636 files, so it is possible that DEF_REGULAR is not set now but
3637 will be set later (it is never cleared). In case of a weak
3638 definition, DEF_REGULAR may be cleared later by a strong
3639 definition in a shared library. We account for that
3640 possibility below by storing information in the relocs_copied
3641 field of the hash table entry. A similar situation occurs
3642 when creating shared libraries and symbol visibility changes
3643 render the symbol local. */
3644
3645 /* No need to do anything if we're not creating a shared object. */
3646 if (! info->shared)
3647 break;
3648
3649 /* We don't need to handle relocs into sections not going into
3650 the "real" output. */
3651 if ((sec->flags & SEC_ALLOC) == 0)
3652 break;
3653
3654 /* If the symbol is local, then we know already we can
3655 eliminate the reloc. */
3656 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3657 break;
3658
3659 /* If this is with -Bsymbolic and the symbol isn't weak, and
3660 is defined by an ordinary object (the ones we include in
3661 this shared library) then we can also eliminate the
3662 reloc. See comment above for more eliminable cases which
3663 we can't identify at this time. */
3664 if (info->symbolic
3665 && h->root.type != bfd_link_hash_defweak
3666 && h->def_regular)
3667 break;
3668
3669 /* We may need to create a reloc section in the dynobj and made room
3670 for this reloc. */
3671 if (sreloc == NULL)
3672 {
3673 sreloc = _bfd_elf_make_dynamic_reloc_section
3674 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3675
3676 if (sreloc == NULL)
3677 return FALSE;
3678 }
3679
3680 sreloc->size += sizeof (Elf32_External_Rela);
3681
3682 /* We count the number of PC relative relocations we have
3683 entered for this symbol, so that we can discard them
3684 again if the symbol is later defined by a regular object.
3685 We know that h is really a pointer to an
3686 elf_cris_link_hash_entry. */
3687 {
3688 struct elf_cris_link_hash_entry *eh;
3689 struct elf_cris_pcrel_relocs_copied *p;
3690
3691 eh = elf_cris_hash_entry (h);
3692
3693 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3694 if (p->section == sec)
3695 break;
3696
3697 if (p == NULL)
3698 {
3699 p = ((struct elf_cris_pcrel_relocs_copied *)
3700 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3701 if (p == NULL)
3702 return FALSE;
3703 p->next = eh->pcrel_relocs_copied;
3704 eh->pcrel_relocs_copied = p;
3705 p->section = sec;
3706 p->count = 0;
3707 p->r_type = r_type;
3708 }
3709
3710 ++p->count;
3711 }
3712 break;
3713
3714 /* This relocation describes the C++ object vtable hierarchy.
3715 Reconstruct it for later use during GC. */
3716 case R_CRIS_GNU_VTINHERIT:
3717 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3718 return FALSE;
3719 break;
3720
3721 /* This relocation describes which C++ vtable entries are actually
3722 used. Record for later use during GC. */
3723 case R_CRIS_GNU_VTENTRY:
3724 BFD_ASSERT (h != NULL);
3725 if (h != NULL
3726 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3727 return FALSE;
3728 break;
3729
3730 case R_CRIS_16_TPREL:
3731 case R_CRIS_32_TPREL:
3732 /* Already warned above, when necessary. */
3733 break;
3734
3735 default:
3736 /* Other relocs do not appear here. */
3737 bfd_set_error (bfd_error_bad_value);
3738 return FALSE;
3739 }
3740 }
3741
3742 return TRUE;
3743 }
3744
3745 /* Set the sizes of the dynamic sections. */
3746
3747 static bfd_boolean
3748 elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3749 struct bfd_link_info *info)
3750 {
3751 struct elf_cris_link_hash_table * htab;
3752 bfd *dynobj;
3753 asection *s;
3754 bfd_boolean plt;
3755 bfd_boolean relocs;
3756
3757 htab = elf_cris_hash_table (info);
3758 if (htab == NULL)
3759 return FALSE;
3760
3761 dynobj = elf_hash_table (info)->dynobj;
3762 BFD_ASSERT (dynobj != NULL);
3763
3764 if (elf_hash_table (info)->dynamic_sections_created)
3765 {
3766 /* Set the contents of the .interp section to the interpreter. */
3767 if (info->executable)
3768 {
3769 s = bfd_get_linker_section (dynobj, ".interp");
3770 BFD_ASSERT (s != NULL);
3771 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3772 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3773 }
3774 }
3775 else
3776 {
3777 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3778 elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got,
3779 info);
3780
3781 /* We may have created entries in the .rela.got section.
3782 However, if we are not creating the dynamic sections, we will
3783 not actually use these entries. Reset the size of .rela.got,
3784 which will cause it to get stripped from the output file
3785 below. */
3786 s = bfd_get_linker_section (dynobj, ".rela.got");
3787 if (s != NULL)
3788 s->size = 0;
3789 }
3790
3791 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3792 relative relocs against symbols defined in a regular object. We
3793 allocated space for them in the check_relocs routine, but we will not
3794 fill them in in the relocate_section routine. We also discard space
3795 for relocs that have become for local symbols due to symbol
3796 visibility changes. For programs, we discard space for relocs for
3797 symbols not referenced by any dynamic object. */
3798 if (info->shared)
3799 elf_cris_link_hash_traverse (htab,
3800 elf_cris_discard_excess_dso_dynamics,
3801 info);
3802 else
3803 elf_cris_link_hash_traverse (htab,
3804 elf_cris_discard_excess_program_dynamics,
3805 info);
3806
3807 /* The check_relocs and adjust_dynamic_symbol entry points have
3808 determined the sizes of the various dynamic sections. Allocate
3809 memory for them. */
3810 plt = FALSE;
3811 relocs = FALSE;
3812 for (s = dynobj->sections; s != NULL; s = s->next)
3813 {
3814 const char *name;
3815
3816 if ((s->flags & SEC_LINKER_CREATED) == 0)
3817 continue;
3818
3819 /* It's OK to base decisions on the section name, because none
3820 of the dynobj section names depend upon the input files. */
3821 name = bfd_get_section_name (dynobj, s);
3822
3823 if (strcmp (name, ".plt") == 0)
3824 {
3825 /* Remember whether there is a PLT. */
3826 plt = s->size != 0;
3827 }
3828 else if (strcmp (name, ".got.plt") == 0)
3829 {
3830 /* The .got.plt contains the .got header as well as the
3831 actual .got.plt contents. The .got header may contain a
3832 R_CRIS_DTPMOD entry at index 3. */
3833 s->size += htab->dtpmod_refcount != 0
3834 ? 8 : 0;
3835 }
3836 else if (CONST_STRNEQ (name, ".rela"))
3837 {
3838 if (strcmp (name, ".rela.got") == 0
3839 && htab->dtpmod_refcount != 0
3840 && info->shared)
3841 s->size += sizeof (Elf32_External_Rela);
3842
3843 if (s->size != 0)
3844 {
3845 /* Remember whether there are any reloc sections other
3846 than .rela.plt. */
3847 if (strcmp (name, ".rela.plt") != 0)
3848 relocs = TRUE;
3849
3850 /* We use the reloc_count field as a counter if we need
3851 to copy relocs into the output file. */
3852 s->reloc_count = 0;
3853 }
3854 }
3855 else if (! CONST_STRNEQ (name, ".got")
3856 && strcmp (name, ".dynbss") != 0)
3857 {
3858 /* It's not one of our sections, so don't allocate space. */
3859 continue;
3860 }
3861
3862 if (s->size == 0)
3863 {
3864 /* If we don't need this section, strip it from the
3865 output file. This is mostly to handle .rela.bss and
3866 .rela.plt. We must create both sections in
3867 create_dynamic_sections, because they must be created
3868 before the linker maps input sections to output
3869 sections. The linker does that before
3870 adjust_dynamic_symbol is called, and it is that
3871 function which decides whether anything needs to go
3872 into these sections. */
3873 s->flags |= SEC_EXCLUDE;
3874 continue;
3875 }
3876
3877 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3878 continue;
3879
3880 /* Allocate memory for the section contents. We use bfd_zalloc here
3881 in case unused entries are not reclaimed before the section's
3882 contents are written out. This should not happen, but this way
3883 if it does, we will not write out garbage. For reloc sections,
3884 this will make entries have the type R_CRIS_NONE. */
3885 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3886 if (s->contents == NULL)
3887 return FALSE;
3888 }
3889
3890 if (elf_hash_table (info)->dynamic_sections_created)
3891 {
3892 /* Add some entries to the .dynamic section. We fill in the
3893 values later, in elf_cris_finish_dynamic_sections, but we
3894 must add the entries now so that we get the correct size for
3895 the .dynamic section. The DT_DEBUG entry is filled in by the
3896 dynamic linker and used by the debugger. */
3897 #define add_dynamic_entry(TAG, VAL) \
3898 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3899
3900 if (!info->shared)
3901 {
3902 if (!add_dynamic_entry (DT_DEBUG, 0))
3903 return FALSE;
3904 }
3905
3906 if (plt)
3907 {
3908 if (!add_dynamic_entry (DT_PLTGOT, 0)
3909 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3910 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3911 || !add_dynamic_entry (DT_JMPREL, 0))
3912 return FALSE;
3913 }
3914
3915 if (relocs)
3916 {
3917 if (!add_dynamic_entry (DT_RELA, 0)
3918 || !add_dynamic_entry (DT_RELASZ, 0)
3919 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3920 return FALSE;
3921 }
3922
3923 if ((info->flags & DF_TEXTREL) != 0)
3924 {
3925 if (!add_dynamic_entry (DT_TEXTREL, 0))
3926 return FALSE;
3927 info->flags |= DF_TEXTREL;
3928 }
3929 }
3930 #undef add_dynamic_entry
3931
3932 return TRUE;
3933 }
3934
3935 /* This function is called via elf_cris_link_hash_traverse if we are
3936 creating a shared object. In the -Bsymbolic case, it discards the
3937 space allocated to copy PC relative relocs against symbols which
3938 are defined in regular objects. For the normal non-symbolic case,
3939 we also discard space for relocs that have become local due to
3940 symbol visibility changes. We allocated space for them in the
3941 check_relocs routine, but we won't fill them in in the
3942 relocate_section routine. */
3943
3944 static bfd_boolean
3945 elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *h,
3946 void * inf)
3947 {
3948 struct elf_cris_pcrel_relocs_copied *s;
3949 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3950
3951 /* If a symbol has been forced local or we have found a regular
3952 definition for the symbolic link case, then we won't be needing
3953 any relocs. */
3954 if (h->root.def_regular
3955 && (h->root.forced_local
3956 || info->symbolic))
3957 {
3958 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3959 {
3960 asection *sreloc
3961 = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info)
3962 ->dynobj,
3963 s->section,
3964 /*rela?*/ TRUE);
3965 sreloc->size -= s->count * sizeof (Elf32_External_Rela);
3966 }
3967 return TRUE;
3968 }
3969
3970 /* If we have accounted for PC-relative relocs for read-only
3971 sections, now is the time to warn for them. We can't do it in
3972 cris_elf_check_relocs, because we don't know the status of all
3973 symbols at that time (and it's common to force symbols local
3974 late). */
3975
3976 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3977 if ((s->section->flags & SEC_READONLY) != 0)
3978 {
3979 /* FIXME: How do we make this optionally a warning only? */
3980 (*_bfd_error_handler)
3981 (_("%B, section `%A', to symbol `%s':\n"
3982 " relocation %s should not be used"
3983 " in a shared object; recompile with -fPIC"),
3984 s->section->owner,
3985 s->section,
3986 h->root.root.root.string,
3987 cris_elf_howto_table[s->r_type].name);
3988
3989 info->flags |= DF_TEXTREL;
3990 }
3991
3992 return TRUE;
3993 }
3994
3995 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3996 creating a shared object. We discard space for relocs for symbols put
3997 in the .got, but which we found we do not have to resolve at run-time. */
3998
3999 static bfd_boolean
4000 elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *h,
4001 void * inf)
4002 {
4003 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4004
4005 /* If we're not creating a shared library and have a symbol which is
4006 referred to by .got references, but the symbol is defined locally,
4007 (or rather, not defined by a DSO) then lose the reloc for the .got
4008 (don't allocate room for it). Likewise for relocs for something
4009 for which we create a PLT. */
4010 if (!h->root.def_dynamic
4011 || h->root.plt.refcount > 0)
4012 {
4013 if (h->reg_got_refcount > 0
4014 /* The size of this section is only valid and in sync with the
4015 various reference counts if we do dynamic; don't decrement it
4016 otherwise. */
4017 && elf_hash_table (info)->dynamic_sections_created)
4018 {
4019 bfd *dynobj = elf_hash_table (info)->dynobj;
4020 asection *srelgot;
4021
4022 BFD_ASSERT (dynobj != NULL);
4023
4024 srelgot = bfd_get_linker_section (dynobj, ".rela.got");
4025
4026 BFD_ASSERT (srelgot != NULL);
4027
4028 srelgot->size -= sizeof (Elf32_External_Rela);
4029 }
4030
4031 /* If the locally-defined symbol isn't used by a DSO, then we don't
4032 have to export it as a dynamic symbol. This was already done for
4033 functions; doing this for all symbols would presumably not
4034 introduce new problems. Of course we don't do this if we're
4035 exporting all dynamic symbols. */
4036 if (! info->export_dynamic
4037 && h->root.dynindx != -1
4038 && !h->root.def_dynamic
4039 && !h->root.ref_dynamic)
4040 {
4041 h->root.dynindx = -1;
4042 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4043 h->root.dynstr_index);
4044 }
4045 }
4046
4047 return TRUE;
4048 }
4049
4050 /* Reject a file depending on presence and expectation of prefixed
4051 underscores on symbols. */
4052
4053 static bfd_boolean
4054 cris_elf_object_p (bfd *abfd)
4055 {
4056 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4057 return FALSE;
4058
4059 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4060 return (bfd_get_symbol_leading_char (abfd) == '_');
4061 else
4062 return (bfd_get_symbol_leading_char (abfd) == 0);
4063 }
4064
4065 /* Mark presence or absence of leading underscore. Set machine type
4066 flags from mach type. */
4067
4068 static void
4069 cris_elf_final_write_processing (bfd *abfd,
4070 bfd_boolean linker ATTRIBUTE_UNUSED)
4071 {
4072 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4073
4074 e_flags &= ~EF_CRIS_UNDERSCORE;
4075 if (bfd_get_symbol_leading_char (abfd) == '_')
4076 e_flags |= EF_CRIS_UNDERSCORE;
4077
4078 switch (bfd_get_mach (abfd))
4079 {
4080 case bfd_mach_cris_v0_v10:
4081 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4082 break;
4083
4084 case bfd_mach_cris_v10_v32:
4085 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4086 break;
4087
4088 case bfd_mach_cris_v32:
4089 e_flags |= EF_CRIS_VARIANT_V32;
4090 break;
4091
4092 default:
4093 _bfd_abort (__FILE__, __LINE__,
4094 _("Unexpected machine number"));
4095 }
4096
4097 elf_elfheader (abfd)->e_flags = e_flags;
4098 }
4099
4100 /* Set the mach type from e_flags value. */
4101
4102 static bfd_boolean
4103 cris_elf_set_mach_from_flags (bfd *abfd,
4104 unsigned long flags)
4105 {
4106 switch (flags & EF_CRIS_VARIANT_MASK)
4107 {
4108 case EF_CRIS_VARIANT_ANY_V0_V10:
4109 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4110 break;
4111
4112 case EF_CRIS_VARIANT_V32:
4113 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4114 break;
4115
4116 case EF_CRIS_VARIANT_COMMON_V10_V32:
4117 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4118 break;
4119
4120 default:
4121 /* Since we don't recognize them, we obviously can't support them
4122 with this code; we'd have to require that all future handling
4123 would be optional. */
4124 bfd_set_error (bfd_error_wrong_format);
4125 return FALSE;
4126 }
4127
4128 return TRUE;
4129 }
4130
4131 /* Display the flags field. */
4132
4133 static bfd_boolean
4134 cris_elf_print_private_bfd_data (bfd *abfd, void * ptr)
4135 {
4136 FILE *file = (FILE *) ptr;
4137
4138 BFD_ASSERT (abfd != NULL && ptr != NULL);
4139
4140 _bfd_elf_print_private_bfd_data (abfd, ptr);
4141
4142 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4143
4144 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4145 fprintf (file, _(" [symbols have a _ prefix]"));
4146 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4147 == EF_CRIS_VARIANT_COMMON_V10_V32)
4148 fprintf (file, _(" [v10 and v32]"));
4149 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4150 == EF_CRIS_VARIANT_V32)
4151 fprintf (file, _(" [v32]"));
4152
4153 fputc ('\n', file);
4154 return TRUE;
4155 }
4156
4157 /* Don't mix files with and without a leading underscore. */
4158
4159 static bfd_boolean
4160 cris_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4161 {
4162 int imach, omach;
4163
4164 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4165 return FALSE;
4166
4167 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4168 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4169 return TRUE;
4170
4171 imach = bfd_get_mach (ibfd);
4172
4173 if (! elf_flags_init (obfd))
4174 {
4175 /* This happens when ld starts out with a 'blank' output file. */
4176 elf_flags_init (obfd) = TRUE;
4177
4178 /* We ignore the linker-set mach, and instead set it according to
4179 the first input file. This would also happen if we could
4180 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4181 This allows us to keep the same linker config across
4182 cris(v0..v10) and crisv32. The drawback is that we can't force
4183 the output type, which might be a sane thing to do for a
4184 v10+v32 compatibility object. */
4185 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4186 return FALSE;
4187 }
4188
4189 if (bfd_get_symbol_leading_char (ibfd)
4190 != bfd_get_symbol_leading_char (obfd))
4191 {
4192 (*_bfd_error_handler)
4193 (bfd_get_symbol_leading_char (ibfd) == '_'
4194 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4195 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4196 ibfd);
4197 bfd_set_error (bfd_error_bad_value);
4198 return FALSE;
4199 }
4200
4201 omach = bfd_get_mach (obfd);
4202
4203 if (imach != omach)
4204 {
4205 /* We can get an incompatible combination only if either is
4206 bfd_mach_cris_v32, and the other one isn't compatible. */
4207 if ((imach == bfd_mach_cris_v32
4208 && omach != bfd_mach_cris_v10_v32)
4209 || (omach == bfd_mach_cris_v32
4210 && imach != bfd_mach_cris_v10_v32))
4211 {
4212 (*_bfd_error_handler)
4213 ((imach == bfd_mach_cris_v32)
4214 ? _("%B contains CRIS v32 code, incompatible"
4215 " with previous objects")
4216 : _("%B contains non-CRIS-v32 code, incompatible"
4217 " with previous objects"),
4218 ibfd);
4219 bfd_set_error (bfd_error_bad_value);
4220 return FALSE;
4221 }
4222
4223 /* We don't have to check the case where the input is compatible
4224 with v10 and v32, because the output is already known to be set
4225 to the other (compatible) mach. */
4226 if (omach == bfd_mach_cris_v10_v32
4227 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4228 return FALSE;
4229 }
4230
4231 return TRUE;
4232 }
4233
4234 /* Do side-effects of e_flags copying to obfd. */
4235
4236 static bfd_boolean
4237 cris_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
4238 {
4239 /* Call the base function. */
4240 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4241 return FALSE;
4242
4243 /* If output is big-endian for some obscure reason, stop here. */
4244 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4245 return FALSE;
4246
4247 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4248 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4249 return TRUE;
4250
4251 /* Do what we really came here for. */
4252 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4253 }
4254
4255 static enum elf_reloc_type_class
4256 elf_cris_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4257 const asection *rel_sec ATTRIBUTE_UNUSED,
4258 const Elf_Internal_Rela *rela)
4259 {
4260 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4261 switch (r_type)
4262 {
4263 case R_CRIS_RELATIVE:
4264 return reloc_class_relative;
4265 case R_CRIS_JUMP_SLOT:
4266 return reloc_class_plt;
4267 case R_CRIS_COPY:
4268 return reloc_class_copy;
4269 default:
4270 return reloc_class_normal;
4271 }
4272 }
4273
4274 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4275 two GOT entries from three types with two different sizes. We handle
4276 it as a single entry, so we can use the regular offset-calculation
4277 machinery. */
4278
4279 static bfd_vma
4280 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4281 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4282 struct elf_link_hash_entry *hr,
4283 bfd *ibfd,
4284 unsigned long symndx)
4285 {
4286 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4287 bfd_vma eltsiz = 0;
4288
4289 /* We may have one regular GOT entry or up to two TLS GOT
4290 entries. */
4291 if (h == NULL)
4292 {
4293 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4294 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4295
4296 BFD_ASSERT (local_got_refcounts != NULL);
4297
4298 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4299 {
4300 /* We can't have a variable referred to both as a regular
4301 variable and through TLS relocs. */
4302 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4303 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4304 return 4;
4305 }
4306
4307 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4308 eltsiz += 8;
4309
4310 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4311 eltsiz += 4;
4312 }
4313 else
4314 {
4315 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4316 if (hh->reg_got_refcount > 0)
4317 {
4318 /* The actual error-on-input is emitted elsewhere. */
4319 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4320 return 4;
4321 }
4322
4323 if (hh->dtp_refcount > 0)
4324 eltsiz += 8;
4325
4326 if (hh->tprel_refcount > 0)
4327 eltsiz += 4;
4328 }
4329
4330 /* We're only called when h->got.refcount is non-zero, so we must
4331 have a non-zero size. */
4332 BFD_ASSERT (eltsiz != 0);
4333 return eltsiz;
4334 }
4335 \f
4336 #define ELF_ARCH bfd_arch_cris
4337 #define ELF_TARGET_ID CRIS_ELF_DATA
4338 #define ELF_MACHINE_CODE EM_CRIS
4339 #define ELF_MAXPAGESIZE 0x2000
4340
4341 #define TARGET_LITTLE_SYM cris_elf32_vec
4342 #define TARGET_LITTLE_NAME "elf32-cris"
4343 #define elf_symbol_leading_char 0
4344
4345 #define elf_info_to_howto_rel NULL
4346 #define elf_info_to_howto cris_info_to_howto_rela
4347 #define elf_backend_relocate_section cris_elf_relocate_section
4348 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4349 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4350 #define elf_backend_plt_sym_val cris_elf_plt_sym_val
4351 #define elf_backend_check_relocs cris_elf_check_relocs
4352 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4353 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4354
4355 #define elf_backend_can_gc_sections 1
4356 #define elf_backend_can_refcount 1
4357
4358 #define elf_backend_object_p cris_elf_object_p
4359 #define elf_backend_final_write_processing \
4360 cris_elf_final_write_processing
4361 #define bfd_elf32_bfd_print_private_bfd_data \
4362 cris_elf_print_private_bfd_data
4363 #define bfd_elf32_bfd_merge_private_bfd_data \
4364 cris_elf_merge_private_bfd_data
4365 #define bfd_elf32_bfd_copy_private_bfd_data \
4366 cris_elf_copy_private_bfd_data
4367
4368 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4369 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4370
4371 #define bfd_elf32_bfd_link_hash_table_create \
4372 elf_cris_link_hash_table_create
4373 #define elf_backend_adjust_dynamic_symbol \
4374 elf_cris_adjust_dynamic_symbol
4375 #define elf_backend_copy_indirect_symbol \
4376 elf_cris_copy_indirect_symbol
4377 #define elf_backend_size_dynamic_sections \
4378 elf_cris_size_dynamic_sections
4379 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4380 #define elf_backend_finish_dynamic_symbol \
4381 elf_cris_finish_dynamic_symbol
4382 #define elf_backend_finish_dynamic_sections \
4383 elf_cris_finish_dynamic_sections
4384 #define elf_backend_create_dynamic_sections \
4385 _bfd_elf_create_dynamic_sections
4386 #define bfd_elf32_bfd_final_link \
4387 bfd_elf_gc_common_final_link
4388 #define elf_backend_hide_symbol elf_cris_hide_symbol
4389 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4390
4391 #define elf_backend_want_got_plt 1
4392 #define elf_backend_plt_readonly 1
4393 #define elf_backend_want_plt_sym 0
4394 #define elf_backend_got_header_size 12
4395 #define elf_backend_got_elt_size elf_cris_got_elt_size
4396
4397 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4398 linking and libraries (if it's a win of any significance). Until then,
4399 take the easy route. */
4400 #define elf_backend_may_use_rel_p 0
4401 #define elf_backend_may_use_rela_p 1
4402 #define elf_backend_rela_normal 1
4403
4404 #include "elf32-target.h"
4405
4406 #undef TARGET_LITTLE_SYM
4407 #undef TARGET_LITTLE_NAME
4408 #undef elf_symbol_leading_char
4409
4410 #define TARGET_LITTLE_SYM cris_elf32_us_vec
4411 #define TARGET_LITTLE_NAME "elf32-us-cris"
4412 #define elf_symbol_leading_char '_'
4413 #undef elf32_bed
4414 #define elf32_bed elf32_us_cris_bed
4415
4416 #include "elf32-target.h"
GDB Binutils - Deliverables
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