Coverage Report

Created: 2024-05-21 06:29

/src/binutils-gdb/bfd/elf32-cris.c
Line
Count
Source (jump to first uncovered line)
1
/* CRIS-specific support for 32-bit ELF.
2
   Copyright (C) 2000-2024 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 bool
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
   0,     /* size */
44
   0,     /* bitsize */
45
   false,     /* pc_relative */
46
   0,     /* bitpos */
47
   complain_overflow_dont, /* 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
   1,     /* size */
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
   2,     /* size */
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
   4,     /* size */
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
   1,     /* size */
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
   2,     /* size */
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
   4,     /* size */
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
   4,     /* size */
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
   4,     /* size */
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
   4,     /* size */
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
   4,     /* size */
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
   4,     /* size */
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
   4,     /* size */
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
   2,     /* size */
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
   4,     /* size */
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
   2,     /* size */
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
   4,     /* size */
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
   4,     /* size */
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
   4,     /* size */
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
   4,     /* size */
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, 4, 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, 2, 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

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
0
{
430
0
  unsigned int i;
431
432
0
  for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
433
0
    if (cris_reloc_map [i].bfd_reloc_val == code)
434
0
      return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
435
436
0
  return NULL;
437
0
}
438
439
static reloc_howto_type *
440
cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
441
0
{
442
0
  unsigned int i;
443
444
0
  for (i = 0;
445
0
       i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
446
0
       i++)
447
0
    if (cris_elf_howto_table[i].name != NULL
448
0
  && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
449
0
      return &cris_elf_howto_table[i];
450
451
0
  return NULL;
452
0
}
453
454
/* Set the howto pointer for an CRIS ELF reloc.  */
455
456
static bool
457
cris_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
458
       arelent * cache_ptr,
459
       Elf_Internal_Rela * dst)
460
0
{
461
0
  enum elf_cris_reloc_type r_type;
462
463
0
  r_type = ELF32_R_TYPE (dst->r_info);
464
0
  if (r_type >= R_CRIS_max)
465
0
    {
466
      /* xgettext:c-format */
467
0
      _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
468
0
        abfd, r_type);
469
0
      bfd_set_error (bfd_error_bad_value);
470
0
      return false;
471
0
    }
472
0
  cache_ptr->howto = & cris_elf_howto_table [r_type];
473
0
  return true;
474
0
}
475
476
bfd_reloc_status_type
477
cris_elf_pcrel_reloc (bfd *abfd ATTRIBUTE_UNUSED,
478
          arelent *reloc_entry,
479
          asymbol *symbol,
480
          void * data ATTRIBUTE_UNUSED,
481
          asection *input_section,
482
          bfd *output_bfd,
483
          char **error_message ATTRIBUTE_UNUSED)
484
0
{
485
  /* By default (using only bfd_elf_generic_reloc when linking to
486
     non-ELF formats) PC-relative relocs are relative to the beginning
487
     of the reloc.  CRIS PC-relative relocs are relative to the position
488
     *after* the reloc because that's what pre-CRISv32 PC points to
489
     after reading an insn field with that reloc.  (For CRISv32, PC is
490
     actually relative to the start of the insn, but we keep the old
491
     definition.)  Still, we use as much generic machinery as we can.
492
493
     Only adjust when doing a final link.  */
494
0
  if (output_bfd == (bfd *) NULL)
495
0
    reloc_entry->addend -= bfd_get_reloc_size (reloc_entry->howto);
496
497
0
  return
498
0
    bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
499
0
         input_section, output_bfd, error_message);
500
0
}
501

502
/* Support for core dump NOTE sections.
503
   The slightly unintuitive code layout is an attempt to keep at least
504
   some similarities with other ports, hoping to simplify general
505
   changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart.  */
506
507
static bool
508
cris_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
509
0
{
510
0
  int offset;
511
0
  size_t size;
512
513
0
  if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
514
0
    switch (note->descsz)
515
0
      {
516
0
      default:
517
0
  return false;
518
519
0
      case 202:   /* Linux/CRISv32 */
520
  /* pr_cursig */
521
0
  elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
522
523
  /* pr_pid */
524
0
  elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
525
526
  /* pr_reg */
527
0
  offset = 70;
528
0
  size = 128;
529
530
0
  break;
531
0
      }
532
0
  else
533
0
    switch (note->descsz)
534
0
      {
535
0
      default:
536
0
  return false;
537
538
0
      case 214:   /* Linux/CRIS */
539
  /* pr_cursig */
540
0
  elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
541
542
  /* pr_pid */
543
0
  elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
544
545
  /* pr_reg */
546
0
  offset = 70;
547
0
  size = 140;
548
549
0
  break;
550
0
      }
551
552
  /* Make a ".reg/999" section.  */
553
0
  return _bfd_elfcore_make_pseudosection (abfd, ".reg",
554
0
            size, note->descpos + offset);
555
0
}
556
557
static bool
558
cris_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
559
0
{
560
0
  if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
561
0
    switch (note->descsz)
562
0
      {
563
0
      default:
564
0
  return false;
565
566
0
      case 124:   /* Linux/CRISv32 elf_prpsinfo */
567
0
  elf_tdata (abfd)->core->program
568
0
    = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
569
0
  elf_tdata (abfd)->core->command
570
0
    = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
571
0
      }
572
0
  else
573
0
    switch (note->descsz)
574
0
      {
575
0
      default:
576
0
  return false;
577
578
0
      case 124:   /* Linux/CRIS elf_prpsinfo */
579
0
  elf_tdata (abfd)->core->program
580
0
    = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
581
0
  elf_tdata (abfd)->core->command
582
0
    = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
583
0
      }
584
585
  /* Note that for some reason, a spurious space is tacked
586
     onto the end of the args in some (at least one anyway)
587
     implementations, so strip it off if it exists.  */
588
589
0
  {
590
0
    char *command = elf_tdata (abfd)->core->command;
591
0
    int n = strlen (command);
592
593
0
    if (0 < n && command[n - 1] == ' ')
594
0
      command[n - 1] = '\0';
595
0
  }
596
597
0
  return true;
598
0
}
599

600
/* The name of the dynamic interpreter.  This is put in the .interp
601
   section.  */
602
603
0
#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
604
605
/* The size in bytes of an entry in the procedure linkage table.  */
606
607
0
#define PLT_ENTRY_SIZE 20
608
0
#define PLT_ENTRY_SIZE_V32 26
609
610
/* The first entry in an absolute procedure linkage table looks like this.  */
611
612
static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
613
{
614
  0xfc, 0xe1,
615
  0x7e, 0x7e, /* push mof.  */
616
  0x7f, 0x0d,   /*  (dip [pc+]) */
617
  0, 0, 0, 0, /*  Replaced with address of .got + 4.  */
618
  0x30, 0x7a, /* move [...],mof */
619
  0x7f, 0x0d,   /*  (dip [pc+]) */
620
  0, 0, 0, 0, /*  Replaced with address of .got + 8.  */
621
  0x30, 0x09  /* jump [...] */
622
};
623
624
static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
625
{
626
  0x84, 0xe2, /* subq 4,$sp */
627
  0x6f, 0xfe, /* move.d 0,$acr */
628
  0, 0, 0, 0, /*  Replaced by address of .got + 4.  */
629
  0x7e, 0x7a, /* move $mof,[$sp] */
630
  0x3f, 0x7a, /* move [$acr],$mof */
631
  0x04, 0xf2, /* addq 4,acr */
632
  0x6f, 0xfa, /* move.d [$acr],$acr */
633
  0xbf, 0x09, /* jump $acr */
634
  0xb0, 0x05, /* nop */
635
  0, 0    /*  Pad out to 26 bytes.  */
636
};
637
638
/* Subsequent entries in an absolute procedure linkage table look like
639
   this.  */
640
641
static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
642
{
643
  0x7f, 0x0d,   /*  (dip [pc+]) */
644
  0, 0, 0, 0, /*  Replaced with address of this symbol in .got.  */
645
  0x30, 0x09, /* jump [...] */
646
  0x3f,  0x7e,  /* move [pc+],mof */
647
  0, 0, 0, 0, /*  Replaced with offset into relocation table.  */
648
  0x2f, 0xfe, /* add.d [pc+],pc */
649
  0xec, 0xff,
650
  0xff, 0xff  /*  Replaced with offset to start of .plt.  */
651
};
652
653
static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
654
{
655
  0x6f, 0xfe, /* move.d 0,$acr */
656
  0, 0, 0, 0, /*  Replaced with address of this symbol in .got.  */
657
  0x6f, 0xfa,   /* move.d [$acr],$acr */
658
  0xbf, 0x09,   /* jump $acr */
659
  0xb0, 0x05, /* nop */
660
  0x3f, 0x7e, /* move 0,mof */
661
  0, 0, 0, 0, /*  Replaced with offset into relocation table. */
662
  0xbf, 0x0e, /* ba start_of_plt0_entry */
663
  0, 0, 0, 0, /*  Replaced with offset to plt0 entry.  */
664
  0xb0, 0x05  /* nop */
665
};
666
667
/* The first entry in a PIC procedure linkage table looks like this.  */
668
669
static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
670
{
671
  0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
672
  0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
673
  0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
674
  0, 0, 0, 0, 0, 0, 0, 0, /*  Pad out to 20 bytes.  */
675
};
676
677
static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
678
{
679
  0x84, 0xe2, /* subq 4,$sp */
680
  0x04, 0x01, /* addoq 4,$r0,$acr */
681
  0x7e, 0x7a, /* move $mof,[$sp] */
682
  0x3f, 0x7a, /* move [$acr],$mof */
683
  0x04, 0xf2, /* addq 4,$acr */
684
  0x6f, 0xfa, /* move.d [$acr],$acr */
685
  0xbf, 0x09, /* jump $acr */
686
  0xb0, 0x05, /* nop */
687
  0, 0,   /*  Pad out to 26 bytes.  */
688
  0, 0, 0, 0,
689
  0, 0, 0, 0
690
};
691
692
/* Subsequent entries in a PIC procedure linkage table look like this.  */
693
694
static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
695
{
696
  0x6f, 0x0d,   /*  (bdap [pc+].d,r0) */
697
  0, 0, 0, 0, /*  Replaced with offset of this symbol in .got.  */
698
  0x30, 0x09, /* jump [...] */
699
  0x3f, 0x7e, /* move [pc+],mof */
700
  0, 0, 0, 0, /*  Replaced with offset into relocation table.  */
701
  0x2f, 0xfe, /* add.d [pc+],pc */
702
  0xec, 0xff, /*  Replaced with offset to start of .plt.  */
703
  0xff, 0xff
704
};
705
706
static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
707
{
708
  0x6f, 0x0d, /* addo.d 0,$r0,$acr */
709
  0, 0, 0, 0, /*  Replaced with offset of this symbol in .got.  */
710
  0x6f, 0xfa, /* move.d [$acr],$acr */
711
  0xbf, 0x09, /* jump $acr */
712
  0xb0, 0x05, /* nop */
713
  0x3f, 0x7e, /* move relocoffs,$mof */
714
  0, 0, 0, 0, /*  Replaced with offset into relocation table.  */
715
  0xbf, 0x0e, /* ba start_of_plt */
716
  0, 0, 0, 0, /*  Replaced with offset to start of .plt.  */
717
  0xb0, 0x05  /* nop */
718
};
719

720
/* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
721
   (and most other PIC/shlib stuff).  Check that we don't drift away
722
   without reason.
723
724
   The CRIS linker, like the m68k and i386 linkers (and probably the rest
725
   too) needs to keep track of the number of relocs that it decides to
726
   copy in check_relocs for each symbol.  This is so that it can discard
727
   PC relative relocs if it doesn't need them when linking with
728
   -Bsymbolic.  We store the information in a field extending the regular
729
   ELF linker hash table.  */
730
731
/* This structure keeps track of the number of PC relative relocs we have
732
   copied for a given symbol.  */
733
734
struct elf_cris_pcrel_relocs_copied
735
{
736
  /* Next section.  */
737
  struct elf_cris_pcrel_relocs_copied *next;
738
739
  /* A section in dynobj.  */
740
  asection *section;
741
742
  /* Number of relocs copied in this section.  */
743
  bfd_size_type count;
744
745
  /* Example of reloc being copied, for message.  */
746
  enum elf_cris_reloc_type r_type;
747
};
748
749
/* CRIS ELF linker hash entry.  */
750
751
struct elf_cris_link_hash_entry
752
{
753
  struct elf_link_hash_entry root;
754
755
  /* Number of PC relative relocs copied for this symbol.  */
756
  struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
757
758
  /* The GOTPLT references are CRIS-specific; the goal is to avoid having
759
     both a general GOT and a PLT-specific GOT entry for the same symbol,
760
     when it is referenced both as a function and as a function pointer.
761
762
     Number of GOTPLT references for a function.  */
763
  bfd_signed_vma gotplt_refcount;
764
765
  /* Actual GOTPLT index for this symbol, if applicable, or zero if not
766
     (zero is never used as an index).  FIXME: We should be able to fold
767
     this with gotplt_refcount in a union, like the got and plt unions in
768
     elf_link_hash_entry.  */
769
  bfd_size_type gotplt_offset;
770
771
  /* The root.got.refcount is the sum of the regular reference counts
772
     (this) and those members below.  We have to keep a separate count
773
     to track when we've found the first (or last) reference to a
774
     regular got entry.  The offset is in root.got.offset.  */
775
  bfd_signed_vma reg_got_refcount;
776
777
  /* Similar to the above, the number of reloc references to this
778
     symbols that need a R_CRIS_32_TPREL slot.  The offset is in
779
     root.got.offset, because this and .dtp_refcount can't validly
780
     happen when there's also a regular GOT entry; that's invalid
781
     input for which an error is emitted.  */
782
  bfd_signed_vma tprel_refcount;
783
784
  /* Similar to the above, the number of reloc references to this
785
     symbols that need a R_CRIS_DTP slot.  The offset is in
786
     root.got.offset; plus 4 if .tprel_refcount > 0.  */
787
  bfd_signed_vma dtp_refcount;
788
};
789
790
static bool
791
elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *,
792
              void * );
793
static bool
794
elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *,
795
            void *);
796
797
/* The local_got_refcounts and local_got_offsets are a multiple of
798
   LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
799
   refcount for GOT itself, see code), with the summary / group offset
800
   for local symbols located at offset N, reference counts for
801
   ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
802
   relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
803
   3*LSNUM.  */
804
805
0
#define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
806
0
#define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
807
0
#define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
808
0
#define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
809
810
/* CRIS ELF linker hash table.  */
811
812
struct elf_cris_link_hash_table
813
{
814
  struct elf_link_hash_table root;
815
816
  /* We can't use the PLT offset and calculate to get the GOTPLT offset,
817
     since we try and avoid creating GOTPLT:s when there's already a GOT.
818
     Instead, we keep and update the next available index here.  */
819
  bfd_size_type next_gotplt_entry;
820
821
  /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
822
     been seen for any input; if != 0, then the constant-offset
823
     R_CRIS_DTPMOD is needed for this DSO/executable.  This turns
824
     negative at relocation, so that we don't need an extra flag for
825
     when the reloc is output.  */
826
  bfd_signed_vma dtpmod_refcount;
827
};
828
829
/* Traverse a CRIS ELF linker hash table.  */
830
831
#define elf_cris_link_hash_traverse(table, func, info)      \
832
0
  (elf_link_hash_traverse           \
833
0
   (&(table)->root,             \
834
0
    (bool (*) (struct elf_link_hash_entry *, void *)) (func),   \
835
0
    (info)))
836
837
/* Get the CRIS ELF linker hash table from a link_info structure.  */
838
839
#define elf_cris_hash_table(p) \
840
0
  ((is_elf_hash_table ((p)->hash)          \
841
0
    && elf_hash_table_id (elf_hash_table (p)) == CRIS_ELF_DATA)   \
842
0
   ? (struct elf_cris_link_hash_table *) (p)->hash : NULL)
843
844
/* Get the CRIS ELF linker hash entry from a regular hash entry (the
845
   "parent class").  The .root reference is just a simple type
846
   check on the argument.  */
847
848
#define elf_cris_hash_entry(p) \
849
0
 ((struct elf_cris_link_hash_entry *) (&(p)->root))
850
851
/* Create an entry in a CRIS ELF linker hash table.  */
852
853
static struct bfd_hash_entry *
854
elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry,
855
          struct bfd_hash_table *table,
856
          const char *string)
857
0
{
858
0
  struct elf_cris_link_hash_entry *ret =
859
0
    (struct elf_cris_link_hash_entry *) entry;
860
861
  /* Allocate the structure if it has not already been allocated by a
862
     subclass.  */
863
0
  if (ret == (struct elf_cris_link_hash_entry *) NULL)
864
0
    ret = ((struct elf_cris_link_hash_entry *)
865
0
     bfd_hash_allocate (table,
866
0
            sizeof (struct elf_cris_link_hash_entry)));
867
0
  if (ret == (struct elf_cris_link_hash_entry *) NULL)
868
0
    return (struct bfd_hash_entry *) ret;
869
870
  /* Call the allocation method of the superclass.  */
871
0
  ret = ((struct elf_cris_link_hash_entry *)
872
0
   _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
873
0
             table, string));
874
0
  if (ret != (struct elf_cris_link_hash_entry *) NULL)
875
0
    {
876
0
      ret->pcrel_relocs_copied = NULL;
877
0
      ret->gotplt_refcount = 0;
878
0
      ret->gotplt_offset = 0;
879
0
      ret->dtp_refcount = 0;
880
0
      ret->tprel_refcount = 0;
881
0
      ret->reg_got_refcount = 0;
882
0
    }
883
884
0
  return (struct bfd_hash_entry *) ret;
885
0
}
886
887
/* Create a CRIS ELF linker hash table.  */
888
889
static struct bfd_link_hash_table *
890
elf_cris_link_hash_table_create (bfd *abfd)
891
0
{
892
0
  struct elf_cris_link_hash_table *ret;
893
0
  size_t amt = sizeof (struct elf_cris_link_hash_table);
894
895
0
  ret = ((struct elf_cris_link_hash_table *) bfd_zmalloc (amt));
896
0
  if (ret == (struct elf_cris_link_hash_table *) NULL)
897
0
    return NULL;
898
899
0
  if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
900
0
              elf_cris_link_hash_newfunc,
901
0
              sizeof (struct elf_cris_link_hash_entry),
902
0
              CRIS_ELF_DATA))
903
0
    {
904
0
      free (ret);
905
0
      return NULL;
906
0
    }
907
908
  /* Initialize to skip over the first three entries in the gotplt; they
909
     are used for run-time symbol evaluation.  */
910
0
  ret->next_gotplt_entry = 12;
911
912
0
  return &ret->root.root;
913
0
}
914

915
/* Perform a single relocation.  By default we use the standard BFD
916
   routines, with a few tweaks.  */
917
918
static bfd_reloc_status_type
919
cris_final_link_relocate (reloc_howto_type *  howto,
920
        bfd *         input_bfd,
921
        asection *        input_section,
922
        bfd_byte *        contents,
923
        Elf_Internal_Rela * rel,
924
        bfd_vma       relocation)
925
0
{
926
0
  bfd_reloc_status_type r;
927
0
  enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
928
929
  /* PC-relative relocations are relative to the position *after*
930
     the reloc.  Note that for R_CRIS_8_PCREL the adjustment is
931
     not a single byte, since PC must be 16-bit-aligned.  */
932
0
  switch (r_type)
933
0
    {
934
      /* Check that the 16-bit GOT relocs are positive.  */
935
0
    case R_CRIS_16_GOTPLT:
936
0
    case R_CRIS_16_GOT:
937
0
      if ((bfd_signed_vma) relocation < 0)
938
0
  return bfd_reloc_overflow;
939
0
      break;
940
941
0
    case R_CRIS_32_PLT_PCREL:
942
0
    case R_CRIS_32_PCREL:
943
0
      relocation -= 2;
944
      /* Fall through.  */
945
0
    case R_CRIS_8_PCREL:
946
0
    case R_CRIS_16_PCREL:
947
0
      relocation -= 2;
948
0
      break;
949
950
0
    default:
951
0
      break;
952
0
    }
953
954
0
  r = _bfd_final_link_relocate (howto, input_bfd, input_section,
955
0
        contents, rel->r_offset,
956
0
        relocation, rel->r_addend);
957
0
  return r;
958
0
}
959

960
961
/* The number of errors left before we stop outputting reloc-specific
962
   explanatory messages.  By coincidence, this works nicely together
963
   with the default number of messages you'll get from LD about
964
   "relocation truncated to fit" messages before you get an
965
   "additional relocation overflows omitted from the output".  */
966
static int additional_relocation_error_msg_count = 10;
967
968
/* Relocate an CRIS ELF section.  See elf32-fr30.c, from where this was
969
   copied, for further comments.  */
970
971
static int
972
cris_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
973
         struct bfd_link_info *info,
974
         bfd *input_bfd,
975
         asection *input_section,
976
         bfd_byte *contents,
977
         Elf_Internal_Rela *relocs,
978
         Elf_Internal_Sym *local_syms,
979
         asection **local_sections)
980
0
{
981
0
  struct elf_cris_link_hash_table * htab;
982
0
  bfd *dynobj;
983
0
  Elf_Internal_Shdr *symtab_hdr;
984
0
  struct elf_link_hash_entry **sym_hashes;
985
0
  bfd_vma *local_got_offsets;
986
0
  asection *sgot;
987
0
  asection *splt;
988
0
  asection *sreloc;
989
0
  Elf_Internal_Rela *rel;
990
0
  Elf_Internal_Rela *relend;
991
0
  asection *srelgot;
992
993
0
  htab = elf_cris_hash_table (info);
994
0
  if (htab == NULL)
995
0
    return false;
996
997
0
  dynobj = htab->root.dynobj;
998
0
  local_got_offsets = elf_local_got_offsets (input_bfd);
999
0
  symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1000
0
  sym_hashes = elf_sym_hashes (input_bfd);
1001
0
  relend     = relocs + input_section->reloc_count;
1002
1003
0
  sgot = NULL;
1004
0
  splt = NULL;
1005
0
  sreloc = NULL;
1006
0
  srelgot = NULL;
1007
1008
0
  if (dynobj != NULL)
1009
0
    {
1010
0
      splt = htab->root.splt;
1011
0
      sgot = htab->root.sgot;
1012
0
    }
1013
1014
0
  for (rel = relocs; rel < relend; rel ++)
1015
0
    {
1016
0
      reloc_howto_type *howto;
1017
0
      unsigned long r_symndx;
1018
0
      Elf_Internal_Sym *sym;
1019
0
      asection *sec;
1020
0
      struct elf_link_hash_entry *h;
1021
0
      bfd_vma relocation;
1022
0
      bfd_reloc_status_type r;
1023
0
      const char *symname = NULL;
1024
0
      enum elf_cris_reloc_type r_type;
1025
0
      bool resolved_to_zero;
1026
1027
0
      r_type = ELF32_R_TYPE (rel->r_info);
1028
1029
0
      if (   r_type == R_CRIS_GNU_VTINHERIT
1030
0
    || r_type == R_CRIS_GNU_VTENTRY)
1031
0
  continue;
1032
1033
0
      r_symndx = ELF32_R_SYM (rel->r_info);
1034
0
      howto  = cris_elf_howto_table + r_type;
1035
0
      h      = NULL;
1036
0
      sym    = NULL;
1037
0
      sec    = NULL;
1038
1039
0
      if (r_symndx < symtab_hdr->sh_info)
1040
0
  {
1041
0
    sym = local_syms + r_symndx;
1042
0
    sec = local_sections [r_symndx];
1043
0
    relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1044
1045
0
    symname = (bfd_elf_string_from_elf_section
1046
0
         (input_bfd, symtab_hdr->sh_link, sym->st_name));
1047
0
    if (symname == NULL)
1048
0
      symname = bfd_section_name (sec);
1049
0
  }
1050
0
      else
1051
0
  {
1052
0
    bool warned, ignored;
1053
0
    bool unresolved_reloc;
1054
1055
0
    RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1056
0
           r_symndx, symtab_hdr, sym_hashes,
1057
0
           h, sec, relocation,
1058
0
           unresolved_reloc, warned, ignored);
1059
1060
0
    symname = h->root.root.string;
1061
1062
0
    if (unresolved_reloc
1063
        /* Perhaps we should detect the cases that
1064
     sec->output_section is expected to be NULL like i386 and
1065
     m68k, but apparently (and according to elfxx-ia64.c) all
1066
     valid cases are where the symbol is defined in a shared
1067
     object which we link dynamically against.  This includes
1068
     PLT relocs for which we've created a PLT entry and other
1069
     relocs for which we're prepared to create dynamic
1070
     relocations.
1071
1072
     For now, new situations cause us to just err when
1073
     sec->output_offset is NULL but the object with the symbol
1074
     is *not* dynamically linked against.  Thus this will
1075
     automatically remind us so we can see if there are other
1076
     valid cases we need to revisit.  */
1077
0
        && (sec->owner->flags & DYNAMIC) != 0)
1078
0
      relocation = 0;
1079
1080
0
    else if (h->root.type == bfd_link_hash_defined
1081
0
       || h->root.type == bfd_link_hash_defweak)
1082
0
      {
1083
        /* Here follow the cases where the relocation value must
1084
     be zero (or when further handling is simplified when
1085
     zero).  I can't claim to understand the various
1086
     conditions and they weren't described in the files
1087
     where I copied them from (elf32-m68k.c and
1088
     elf32-i386.c), but let's mention examples of where
1089
     they happen.  FIXME: Perhaps define and use a
1090
     dynamic_symbol_p function like ia64.
1091
1092
     - When creating a shared library, we can have an
1093
     ordinary relocation for a symbol defined in a shared
1094
     library (perhaps the one we create).  We then make
1095
     the relocation value zero, as the value seen now will
1096
     be added into the relocation addend in this shared
1097
     library, but must be handled only at dynamic-link
1098
     time.  FIXME: Not sure this example covers the
1099
     h->elf_link_hash_flags test, though it's there in
1100
     other targets.  */
1101
0
        if (bfd_link_pic (info)
1102
0
      && ((!SYMBOLIC_BIND (info, h) && h->dynindx != -1)
1103
0
          || !h->def_regular)
1104
0
      && (input_section->flags & SEC_ALLOC) != 0
1105
0
      && (r_type == R_CRIS_8
1106
0
          || r_type == R_CRIS_16
1107
0
          || r_type == R_CRIS_32
1108
0
          || r_type == R_CRIS_8_PCREL
1109
0
          || r_type == R_CRIS_16_PCREL
1110
0
          || r_type == R_CRIS_32_PCREL))
1111
0
    relocation = 0;
1112
0
        else if (!bfd_link_relocatable (info) && unresolved_reloc
1113
0
           && (_bfd_elf_section_offset (output_bfd, info,
1114
0
                input_section,
1115
0
                rel->r_offset)
1116
0
         != (bfd_vma) -1))
1117
0
    {
1118
0
      _bfd_error_handler
1119
        /* xgettext:c-format */
1120
0
        (_("%pB, section %pA: unresolvable relocation %s against symbol `%s'"),
1121
0
         input_bfd,
1122
0
         input_section,
1123
0
         cris_elf_howto_table[r_type].name,
1124
0
         symname);
1125
0
      bfd_set_error (bfd_error_bad_value);
1126
0
      return false;
1127
0
    }
1128
0
      }
1129
0
  }
1130
1131
0
      if (sec != NULL && discarded_section (sec))
1132
0
  RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1133
0
           rel, 1, relend, howto, 0, contents);
1134
1135
0
      if (bfd_link_relocatable (info))
1136
0
  continue;
1137
1138
0
      resolved_to_zero = (h != NULL
1139
0
        && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
1140
1141
0
      switch (r_type)
1142
0
  {
1143
0
  case R_CRIS_16_GOTPLT:
1144
0
  case R_CRIS_32_GOTPLT:
1145
    /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1146
       but we require a PLT, and the PLT handling will take care of
1147
       filling in the PLT-specific GOT entry.  For the GOT offset,
1148
       calculate it as we do when filling it in for the .got.plt
1149
       section.  If we don't have a PLT, punt to GOT handling.  */
1150
0
    if (h != NULL
1151
0
        && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1152
0
      {
1153
0
        asection *sgotplt = htab->root.sgotplt;
1154
0
        bfd_vma got_offset;
1155
1156
0
        BFD_ASSERT (h->dynindx != -1);
1157
0
        BFD_ASSERT (sgotplt != NULL);
1158
1159
0
        got_offset
1160
0
    = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1161
1162
0
        relocation = got_offset;
1163
0
        break;
1164
0
      }
1165
1166
    /* We didn't make a PLT entry for this symbol.  Maybe everything is
1167
       folded into the GOT.  Other than folding, this happens when
1168
       statically linking PIC code, or when using -Bsymbolic.  Check
1169
       that we instead have a GOT entry as done for us by
1170
       elf_cris_adjust_dynamic_symbol, and drop through into the
1171
       ordinary GOT cases.  This must not happen for the
1172
       executable, because any reference it does to a function
1173
       that is satisfied by a DSO must generate a PLT.  We assume
1174
       these call-specific relocs don't address non-functions.  */
1175
0
    if (h != NULL
1176
0
        && (h->got.offset == (bfd_vma) -1
1177
0
      || (!bfd_link_pic (info)
1178
0
          && !(h->def_regular
1179
0
         || (!h->def_dynamic
1180
0
             && h->root.type == bfd_link_hash_undefweak)))))
1181
0
      {
1182
0
        _bfd_error_handler
1183
0
    ((h->got.offset == (bfd_vma) -1)
1184
     /* xgettext:c-format */
1185
0
     ? _("%pB, section %pA: no PLT nor GOT for relocation %s"
1186
0
         " against symbol `%s'")
1187
     /* xgettext:c-format */
1188
0
     : _("%pB, section %pA: no PLT for relocation %s"
1189
0
         " against symbol `%s'"),
1190
0
     input_bfd,
1191
0
     input_section,
1192
0
     cris_elf_howto_table[r_type].name,
1193
0
     (symname != NULL && symname[0] != '\0'
1194
0
      ? symname : _("[whose name is lost]")));
1195
1196
        /* FIXME: Perhaps blaming input is not the right thing to
1197
     do; this is probably an internal error.  But it is true
1198
     that we didn't like that particular input.  */
1199
0
        bfd_set_error (bfd_error_bad_value);
1200
0
        return false;
1201
0
      }
1202
    /* Fall through.  */
1203
1204
    /* The size of the actual relocation is not used here; we only
1205
       fill in the GOT table here.  */
1206
0
  case R_CRIS_16_GOT:
1207
0
  case R_CRIS_32_GOT:
1208
0
    {
1209
0
      bfd_vma off;
1210
1211
      /* Note that despite using RELA relocations, the .got contents
1212
         is always filled in with the link-relative relocation
1213
         value; the addend.  */
1214
1215
0
      if (h != NULL)
1216
0
        {
1217
0
    off = h->got.offset;
1218
0
    BFD_ASSERT (off != (bfd_vma) -1);
1219
1220
0
    if (!elf_hash_table (info)->dynamic_sections_created
1221
0
        || (! bfd_link_pic (info)
1222
0
      && (h->def_regular
1223
0
          || h->type == STT_FUNC
1224
0
          || h->needs_plt))
1225
0
        || (bfd_link_pic (info)
1226
0
      && (SYMBOLIC_BIND (info, h) || h->dynindx == -1)
1227
0
      && h->def_regular))
1228
0
      {
1229
        /* This wasn't checked above for ! bfd_link_pic (info), but
1230
           must hold there if we get here; the symbol must
1231
           be defined in the regular program or be undefweak
1232
           or be a function or otherwise need a PLT.  */
1233
0
        BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1234
0
        || bfd_link_pic (info)
1235
0
        || h->def_regular
1236
0
        || h->type == STT_FUNC
1237
0
        || h->needs_plt
1238
0
        || h->root.type == bfd_link_hash_undefweak);
1239
1240
        /* This is actually a static link, or it is a
1241
           -Bsymbolic link and the symbol is defined locally,
1242
           or is undefweak, or the symbol was forced to be
1243
           local because of a version file, or we're not
1244
           creating a dynamic object.  We must initialize this
1245
           entry in the global offset table.  Since the offset
1246
           must always be a multiple of 4, we use the least
1247
           significant bit to record whether we have
1248
           initialized it already.
1249
1250
           If this GOT entry should be runtime-initialized, we
1251
           will create a .rela.got relocation entry to
1252
           initialize the value.  This is done in the
1253
           finish_dynamic_symbol routine.  */
1254
0
        if ((off & 1) != 0)
1255
0
          off &= ~1;
1256
0
        else
1257
0
          {
1258
0
      bfd_put_32 (output_bfd, relocation,
1259
0
            sgot->contents + off);
1260
0
      h->got.offset |= 1;
1261
0
          }
1262
0
      }
1263
0
        }
1264
0
      else
1265
0
        {
1266
0
    BFD_ASSERT (local_got_offsets != NULL
1267
0
          && local_got_offsets[r_symndx] != (bfd_vma) -1);
1268
1269
0
    off = local_got_offsets[r_symndx];
1270
1271
    /* The offset must always be a multiple of 4.  We use
1272
       the least significant bit to record whether we have
1273
       already generated the necessary reloc.  */
1274
0
    if ((off & 1) != 0)
1275
0
      off &= ~1;
1276
0
    else
1277
0
      {
1278
0
        bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1279
1280
0
        if (bfd_link_pic (info))
1281
0
          {
1282
0
      Elf_Internal_Rela outrel;
1283
0
      bfd_byte *loc;
1284
1285
0
      srelgot = htab->root.srelgot;
1286
0
      BFD_ASSERT (srelgot != NULL);
1287
1288
0
      outrel.r_offset = (sgot->output_section->vma
1289
0
             + sgot->output_offset
1290
0
             + off);
1291
0
      outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1292
0
      outrel.r_addend = relocation;
1293
0
      loc = srelgot->contents;
1294
0
      loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1295
0
      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1296
0
          }
1297
1298
0
        local_got_offsets[r_symndx] |= 1;
1299
0
      }
1300
0
        }
1301
1302
0
      relocation = sgot->output_offset + off;
1303
0
      if (rel->r_addend != 0)
1304
0
        {
1305
    /* We can't do anything for a relocation which is against
1306
       a symbol *plus offset*.  GOT holds relocations for
1307
       symbols.  Make this an error; the compiler isn't
1308
       allowed to pass us these kinds of things.  */
1309
0
    if (h == NULL)
1310
0
      _bfd_error_handler
1311
        /* xgettext:c-format */
1312
0
        (_("%pB, section %pA: relocation %s with non-zero addend"
1313
0
           " %" PRId64 " against local symbol"),
1314
0
         input_bfd,
1315
0
         input_section,
1316
0
         cris_elf_howto_table[r_type].name,
1317
0
         (int64_t) rel->r_addend);
1318
0
    else
1319
0
      _bfd_error_handler
1320
        /* xgettext:c-format */
1321
0
        (_("%pB, section %pA: relocation %s with non-zero addend"
1322
0
           " %" PRId64 " against symbol `%s'"),
1323
0
         input_bfd,
1324
0
         input_section,
1325
0
         cris_elf_howto_table[r_type].name,
1326
0
         (int64_t) rel->r_addend,
1327
0
         symname[0] != '\0' ? symname : _("[whose name is lost]"));
1328
1329
0
    bfd_set_error (bfd_error_bad_value);
1330
0
    return false;
1331
0
        }
1332
0
    }
1333
0
    break;
1334
1335
0
  case R_CRIS_32_GOTREL:
1336
    /* This relocation must only be performed against local symbols.
1337
       It's also ok when we link a program and the symbol is either
1338
       defined in an ordinary (non-DSO) object or is undefined weak.  */
1339
0
    if (h != NULL
1340
0
        && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1341
0
        && !(!bfd_link_pic (info)
1342
0
       && (h->def_regular
1343
0
           || (!h->def_dynamic
1344
0
         && h->root.type == bfd_link_hash_undefweak))))
1345
0
      {
1346
0
        _bfd_error_handler
1347
    /* xgettext:c-format */
1348
0
    (_("%pB, section %pA: relocation %s is"
1349
0
       " not allowed for global symbol: `%s'"),
1350
0
     input_bfd,
1351
0
     input_section,
1352
0
     cris_elf_howto_table[r_type].name,
1353
0
     symname);
1354
0
        bfd_set_error (bfd_error_bad_value);
1355
0
        return false;
1356
0
      }
1357
1358
    /* This can happen if we get a link error with the input ELF
1359
       variant mismatching the output variant.  Emit an error so
1360
       it's noticed if it happens elsewhere.  */
1361
0
    if (sgot == NULL)
1362
0
      {
1363
0
        _bfd_error_handler
1364
    /* xgettext:c-format */
1365
0
    (_("%pB, section %pA: relocation %s with no GOT created"),
1366
0
     input_bfd,
1367
0
     input_section,
1368
0
     cris_elf_howto_table[r_type].name);
1369
0
        bfd_set_error (bfd_error_bad_value);
1370
0
        return false;
1371
0
      }
1372
1373
    /* This relocation is like a PC-relative one, except the
1374
       reference point is the location of GOT.  Note that
1375
       sgot->output_offset is not involved in this calculation.  We
1376
       always want the start of entire .got section, not the
1377
       position after the reserved header.  */
1378
0
    relocation -= sgot->output_section->vma;
1379
0
    break;
1380
1381
0
  case R_CRIS_32_PLT_PCREL:
1382
    /* Relocation is to the entry for this symbol in the
1383
       procedure linkage table.  */
1384
1385
    /* Resolve a PLT_PCREL reloc against a local symbol directly,
1386
       without using the procedure linkage table.  */
1387
0
    if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1388
0
      break;
1389
1390
0
    if (h->plt.offset == (bfd_vma) -1
1391
0
        || splt == NULL)
1392
0
      {
1393
        /* We didn't make a PLT entry for this symbol.  This
1394
     happens when statically linking PIC code, or when
1395
     using -Bsymbolic.  */
1396
0
        break;
1397
0
      }
1398
1399
0
    relocation = (splt->output_section->vma
1400
0
      + splt->output_offset
1401
0
      + h->plt.offset);
1402
0
    break;
1403
1404
0
  case R_CRIS_32_PLT_GOTREL:
1405
    /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1406
       start of the .got section.  See also comment at
1407
       R_CRIS_32_GOT.  */
1408
0
    relocation -= sgot->output_section->vma;
1409
1410
    /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1411
       without using the procedure linkage table.  */
1412
0
    if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1413
0
      break;
1414
1415
0
    if (h->plt.offset == (bfd_vma) -1
1416
0
        || splt == NULL)
1417
0
      {
1418
        /* We didn't make a PLT entry for this symbol.  This
1419
     happens when statically linking PIC code, or when
1420
     using -Bsymbolic.  */
1421
0
        break;
1422
0
      }
1423
1424
0
    relocation = (splt->output_section->vma
1425
0
      + splt->output_offset
1426
0
      + h->plt.offset
1427
0
      - sgot->output_section->vma);
1428
0
    break;
1429
1430
0
  case R_CRIS_8_PCREL:
1431
0
  case R_CRIS_16_PCREL:
1432
0
  case R_CRIS_32_PCREL:
1433
    /* If the symbol was local, we need no shlib-specific handling.  */
1434
0
    if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1435
0
        || h->dynindx == -1)
1436
0
      break;
1437
1438
    /* Fall through.  */
1439
0
  case R_CRIS_8:
1440
0
  case R_CRIS_16:
1441
0
  case R_CRIS_32:
1442
0
    if (bfd_link_pic (info)
1443
0
        && !resolved_to_zero
1444
0
        && r_symndx != STN_UNDEF
1445
0
        && (input_section->flags & SEC_ALLOC) != 0
1446
0
        && ((r_type != R_CRIS_8_PCREL
1447
0
       && r_type != R_CRIS_16_PCREL
1448
0
       && r_type != R_CRIS_32_PCREL)
1449
0
      || (!SYMBOLIC_BIND (info, h)
1450
0
          || (h != NULL && !h->def_regular))))
1451
0
      {
1452
0
        Elf_Internal_Rela outrel;
1453
0
        bfd_byte *loc;
1454
0
        bool skip, relocate;
1455
1456
        /* When generating a shared object, these relocations
1457
     are copied into the output file to be resolved at run
1458
     time.  */
1459
1460
0
        if (sreloc == NULL)
1461
0
    {
1462
0
      sreloc = _bfd_elf_get_dynamic_reloc_section
1463
0
        (dynobj, input_section, /*rela?*/ true);
1464
      /* The section should have been created in cris_elf_check_relocs,
1465
         but that function will not be called for objects which fail in
1466
         cris_elf_merge_private_bfd_data.  */
1467
0
      if (sreloc == NULL)
1468
0
        {
1469
0
          bfd_set_error (bfd_error_bad_value);
1470
0
          return false;
1471
0
        }
1472
0
    }
1473
1474
0
        skip = false;
1475
0
        relocate = false;
1476
1477
0
        outrel.r_offset =
1478
0
    _bfd_elf_section_offset (output_bfd, info, input_section,
1479
0
           rel->r_offset);
1480
0
        if (outrel.r_offset == (bfd_vma) -1)
1481
0
    skip = true;
1482
0
        else if (outrel.r_offset == (bfd_vma) -2
1483
           /* For now, undefined weak symbols with non-default
1484
        visibility (yielding 0), like exception info for
1485
        discarded sections, will get a R_CRIS_NONE
1486
        relocation rather than no relocation, because we
1487
        notice too late that the symbol doesn't need a
1488
        relocation.  */
1489
0
           || (h != NULL
1490
0
         && h->root.type == bfd_link_hash_undefweak
1491
0
         && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1492
0
    skip = true, relocate = true;
1493
0
        outrel.r_offset += (input_section->output_section->vma
1494
0
          + input_section->output_offset);
1495
1496
0
        if (skip)
1497
0
    memset (&outrel, 0, sizeof outrel);
1498
        /* h->dynindx may be -1 if the symbol was marked to
1499
     become local.  */
1500
0
        else if (h != NULL
1501
0
           && ((!SYMBOLIC_BIND (info, h) && h->dynindx != -1)
1502
0
         || !h->def_regular))
1503
0
    {
1504
0
      BFD_ASSERT (h->dynindx != -1);
1505
0
      outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1506
0
      outrel.r_addend = relocation + rel->r_addend;
1507
0
    }
1508
0
        else
1509
0
    {
1510
0
      outrel.r_addend = relocation + rel->r_addend;
1511
1512
0
      if (r_type == R_CRIS_32)
1513
0
        {
1514
0
          relocate = true;
1515
0
          outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1516
0
        }
1517
0
      else
1518
0
        {
1519
0
          long indx;
1520
1521
0
          if (bfd_is_abs_section (sec))
1522
0
      indx = 0;
1523
0
          else if (sec == NULL || sec->owner == NULL)
1524
0
      {
1525
0
        bfd_set_error (bfd_error_bad_value);
1526
0
        return false;
1527
0
      }
1528
0
          else
1529
0
      {
1530
0
        asection *osec;
1531
1532
        /* We are turning this relocation into one
1533
           against a section symbol.  It would be
1534
           proper to subtract the symbol's value,
1535
           osec->vma, from the emitted reloc addend,
1536
           but ld.so expects buggy relocs.  */
1537
0
        osec = sec->output_section;
1538
0
        indx = elf_section_data (osec)->dynindx;
1539
0
        if (indx == 0)
1540
0
          {
1541
0
            osec = htab->root.text_index_section;
1542
0
            indx = elf_section_data (osec)->dynindx;
1543
0
          }
1544
0
        BFD_ASSERT (indx != 0);
1545
0
      }
1546
1547
0
          outrel.r_info = ELF32_R_INFO (indx, r_type);
1548
0
        }
1549
0
    }
1550
1551
0
        loc = sreloc->contents;
1552
0
        loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1553
0
        bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1554
1555
        /* This reloc will be computed at runtime, so there's no
1556
     need to do anything now, except for R_CRIS_32 relocations
1557
     that have been turned into R_CRIS_RELATIVE.  */
1558
0
        if (!relocate)
1559
0
    continue;
1560
0
      }
1561
1562
0
    break;
1563
1564
0
  case R_CRIS_16_DTPREL:
1565
0
  case R_CRIS_32_DTPREL:
1566
    /* This relocation must only be performed against local
1567
       symbols, or to sections that are not loadable.  It's also
1568
       ok when we link a program and the symbol is defined in an
1569
       ordinary (non-DSO) object (if it's undefined there, we've
1570
       already seen an error).  */
1571
0
    if (h != NULL
1572
0
        && (input_section->flags & SEC_ALLOC) != 0
1573
0
        && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1574
0
        && (bfd_link_pic (info)
1575
0
      || (!h->def_regular
1576
0
          && h->root.type != bfd_link_hash_undefined)))
1577
0
      {
1578
0
        _bfd_error_handler
1579
0
    ((h->root.type == bfd_link_hash_undefined)
1580
     /* We shouldn't get here for GCC-emitted code.  */
1581
     /* xgettext:c-format */
1582
0
     ? _("%pB, section %pA: relocation %s has an undefined"
1583
0
         " reference to `%s', perhaps a declaration mixup?")
1584
     /* xgettext:c-format */
1585
0
     : _("%pB, section %pA: relocation %s is"
1586
0
         " not allowed for `%s', a global symbol with default"
1587
0
         " visibility, perhaps a declaration mixup?"),
1588
0
     input_bfd,
1589
0
     input_section,
1590
0
     cris_elf_howto_table[r_type].name,
1591
0
     symname != NULL && symname[0] != '\0'
1592
0
     ? symname : _("[whose name is lost]"));
1593
0
        bfd_set_error (bfd_error_bad_value);
1594
0
        return false;
1595
0
      }
1596
1597
0
    BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1598
0
          || htab->dtpmod_refcount != 0);
1599
1600
    /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1601
       already done so.  Note that we do this in .got.plt, not
1602
       in .got, as .got.plt contains the first part, still the
1603
       reloc is against .got, because the linker script directs
1604
       (is required to direct) them both into .got.  */
1605
0
    if (htab->dtpmod_refcount > 0
1606
0
        && (input_section->flags & SEC_ALLOC) != 0)
1607
0
      {
1608
0
        asection *sgotplt = htab->root.sgotplt;
1609
0
        BFD_ASSERT (sgotplt != NULL);
1610
1611
0
        if (bfd_link_pic (info))
1612
0
    {
1613
0
      Elf_Internal_Rela outrel;
1614
0
      bfd_byte *loc;
1615
1616
0
      srelgot = htab->root.srelgot;
1617
0
      BFD_ASSERT (srelgot != NULL);
1618
0
      loc = srelgot->contents;
1619
0
      loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1620
1621
0
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1622
0
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1623
0
      outrel.r_offset = (sgotplt->output_section->vma
1624
0
             + sgotplt->output_offset
1625
0
             + 12);
1626
0
      outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1627
0
      outrel.r_addend = 0;
1628
0
      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1629
0
    }
1630
0
        else
1631
0
    {
1632
      /* For an executable, the GOT entry contents is known.  */
1633
0
      bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1634
0
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1635
0
    }
1636
1637
        /* Reverse the sign to mark that we've emitted the
1638
     required GOT entry.  */
1639
0
        htab->dtpmod_refcount = - htab->dtpmod_refcount;
1640
0
      }
1641
1642
    /* The relocation is the offset from the start of the module
1643
       TLS block to the (local) symbol.  */
1644
0
    relocation -= elf_hash_table (info)->tls_sec == NULL
1645
0
      ? 0 : elf_hash_table (info)->tls_sec->vma;
1646
0
    break;
1647
1648
0
  case R_CRIS_32_GD:
1649
0
    if (bfd_link_pic (info))
1650
0
      {
1651
0
        bfd_set_error (bfd_error_invalid_operation);
1652
1653
        /* We've already informed in cris_elf_check_relocs that
1654
     this is an error.  */
1655
0
        return false;
1656
0
      }
1657
    /* Fall through.  */
1658
1659
0
  case R_CRIS_16_GOT_GD:
1660
0
  case R_CRIS_32_GOT_GD:
1661
0
    if (rel->r_addend != 0)
1662
0
      {
1663
        /* We can't do anything for a relocation which is against a
1664
     symbol *plus offset*.  The GOT holds relocations for
1665
     symbols.  Make this an error; the compiler isn't allowed
1666
     to pass us these kinds of things.  */
1667
0
        _bfd_error_handler
1668
    /* xgettext:c-format */
1669
0
    (_("%pB, section %pA: relocation %s with non-zero addend"
1670
0
       " %" PRId64 " against symbol `%s'"),
1671
0
     input_bfd,
1672
0
     input_section,
1673
0
     cris_elf_howto_table[r_type].name,
1674
0
     (int64_t) rel->r_addend,
1675
0
     symname[0] != '\0' ? symname : _("[whose name is lost]"));
1676
1677
0
        bfd_set_error (bfd_error_bad_value);
1678
0
        return false;
1679
0
      }
1680
1681
0
    if (!bfd_link_pic (info)
1682
0
        && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1683
0
      {
1684
        /* Known contents of the GOT.  */
1685
0
        bfd_vma off;
1686
1687
        /* The symbol is defined in the program, so just write
1688
     (1, known_tpoffset) into the GOT.  */
1689
0
        relocation -= elf_hash_table (info)->tls_sec->vma;
1690
1691
0
        if (h != NULL)
1692
0
    {
1693
0
      off = elf_cris_hash_entry (h)->tprel_refcount > 0
1694
0
        ? h->got.offset + 4 : h->got.offset;
1695
0
    }
1696
0
        else
1697
0
    {
1698
0
      off = local_got_offsets[r_symndx];
1699
0
      if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1700
0
        off += 4;
1701
0
    }
1702
1703
        /* We use bit 1 of the offset as a flag for GOT entry with
1704
     the R_CRIS_DTP reloc, setting it when we've emitted the
1705
     GOT entry and reloc.  Bit 0 is used for R_CRIS_32_TPREL
1706
     relocs.  */
1707
0
        if ((off & 2) == 0)
1708
0
    {
1709
0
      off &= ~3;
1710
1711
0
      if (h != NULL)
1712
0
        h->got.offset |= 2;
1713
0
      else
1714
0
        local_got_offsets[r_symndx] |= 2;
1715
1716
0
      bfd_put_32 (output_bfd, 1, sgot->contents + off);
1717
0
      bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1718
0
    }
1719
0
        else
1720
0
    off &= ~3;
1721
1722
0
        relocation = sgot->output_offset + off
1723
0
    + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1724
0
      }
1725
0
    else
1726
0
      {
1727
        /* Not all parts of the GOT entry are known; emit a real
1728
     relocation.  */
1729
0
        bfd_vma off;
1730
1731
0
        if (h != NULL)
1732
0
    off = elf_cris_hash_entry (h)->tprel_refcount > 0
1733
0
      ? h->got.offset + 4 : h->got.offset;
1734
0
        else
1735
0
    {
1736
0
      off = local_got_offsets[r_symndx];
1737
0
      if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1738
0
        off += 4;
1739
0
    }
1740
1741
        /* See above re bit 1 and bit 0 usage.  */
1742
0
        if ((off & 2) == 0)
1743
0
    {
1744
0
      Elf_Internal_Rela outrel;
1745
0
      bfd_byte *loc;
1746
1747
0
      off &= ~3;
1748
1749
0
      if (h != NULL)
1750
0
        h->got.offset |= 2;
1751
0
      else
1752
0
        local_got_offsets[r_symndx] |= 2;
1753
1754
      /* Clear the target contents of the GOT (just as a
1755
         gesture; it's already cleared on allocation): this
1756
         relocation is not like the other dynrelocs.  */
1757
0
      bfd_put_32 (output_bfd, 0, sgot->contents + off);
1758
0
      bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1759
1760
0
      srelgot = htab->root.srelgot;
1761
0
      BFD_ASSERT (srelgot != NULL);
1762
1763
0
      if (h != NULL && h->dynindx != -1)
1764
0
        {
1765
0
          outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1766
0
          relocation = 0;
1767
0
        }
1768
0
      else
1769
0
        {
1770
0
          outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1771
1772
          /* NULL if we had an error.  */
1773
0
          relocation -= elf_hash_table (info)->tls_sec == NULL
1774
0
      ? 0 : elf_hash_table (info)->tls_sec->vma;
1775
0
        }
1776
1777
0
      outrel.r_offset = (sgot->output_section->vma
1778
0
             + sgot->output_offset
1779
0
             + off);
1780
0
      outrel.r_addend = relocation;
1781
0
      loc = srelgot->contents;
1782
0
      loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1783
1784
      /* NULL if we had an error.  */
1785
0
      if (srelgot->contents != NULL)
1786
0
        bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1787
0
    }
1788
0
        else
1789
0
    off &= ~3;
1790
1791
0
        relocation = sgot->output_offset + off
1792
0
    + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1793
0
      }
1794
1795
    /* The GOT-relative offset to the GOT entry is the
1796
       relocation, or for R_CRIS_32_GD, the actual address of
1797
       the GOT entry.  */
1798
0
    break;
1799
1800
0
  case R_CRIS_32_IE:
1801
0
    if (bfd_link_pic (info))
1802
0
      {
1803
0
        bfd_set_error (bfd_error_invalid_operation);
1804
1805
        /* We've already informed in cris_elf_check_relocs that
1806
     this is an error.  */
1807
0
        return false;
1808
0
      }
1809
    /* Fall through.  */
1810
1811
0
  case R_CRIS_32_GOT_TPREL:
1812
0
  case R_CRIS_16_GOT_TPREL:
1813
0
    if (rel->r_addend != 0)
1814
0
      {
1815
        /* We can't do anything for a relocation which is
1816
     against a symbol *plus offset*.  GOT holds
1817
     relocations for symbols.  Make this an error; the
1818
     compiler isn't allowed to pass us these kinds of
1819
     things.  */
1820
0
        _bfd_error_handler
1821
    /* xgettext:c-format */
1822
0
    (_("%pB, section %pA: relocation %s with non-zero addend"
1823
0
       " %" PRId64 " against symbol `%s'"),
1824
0
     input_bfd,
1825
0
     input_section,
1826
0
     cris_elf_howto_table[r_type].name,
1827
0
     (int64_t) rel->r_addend,
1828
0
     symname[0] != '\0' ? symname : _("[whose name is lost]"));
1829
0
        bfd_set_error (bfd_error_bad_value);
1830
0
        return false;
1831
0
      }
1832
1833
0
    if (!bfd_link_pic (info)
1834
0
        && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1835
0
      {
1836
        /* Known contents of the GOT.  */
1837
0
        bfd_vma off;
1838
1839
        /* The symbol is defined in the program, so just write
1840
     the -prog_tls_size+known_tpoffset into the GOT.  */
1841
0
        relocation -= elf_hash_table (info)->tls_sec->vma;
1842
0
        relocation -= elf_hash_table (info)->tls_size;
1843
1844
0
        if (h != NULL)
1845
0
    off = h->got.offset;
1846
0
        else
1847
0
    off = local_got_offsets[r_symndx];
1848
1849
        /* Bit 0 is used to mark whether we've emitted the required
1850
     entry (and if needed R_CRIS_32_TPREL reloc).  Bit 1
1851
     is used similarly for R_CRIS_DTP, see above.  */
1852
0
        if ((off & 1) == 0)
1853
0
    {
1854
0
      off &= ~3;
1855
1856
0
      if (h != NULL)
1857
0
        h->got.offset |= 1;
1858
0
      else
1859
0
        local_got_offsets[r_symndx] |= 1;
1860
1861
0
      bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1862
0
    }
1863
0
        else
1864
0
    off &= ~3;
1865
1866
0
        relocation = sgot->output_offset + off
1867
0
    + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1868
0
      }
1869
0
    else
1870
0
      {
1871
        /* Emit a real relocation.  */
1872
0
        bfd_vma off;
1873
1874
0
        if (h != NULL)
1875
0
    off = h->got.offset;
1876
0
        else
1877
0
    off = local_got_offsets[r_symndx];
1878
1879
        /* See above re usage of bit 0 and 1.  */
1880
0
        if ((off & 1) == 0)
1881
0
    {
1882
0
      Elf_Internal_Rela outrel;
1883
0
      bfd_byte *loc;
1884
1885
0
      off &= ~3;
1886
1887
0
      if (h != NULL)
1888
0
        h->got.offset |= 1;
1889
0
      else
1890
0
        local_got_offsets[r_symndx] |= 1;
1891
1892
0
      srelgot = htab->root.srelgot;
1893
0
      BFD_ASSERT (srelgot != NULL);
1894
1895
0
      if (h != NULL && h->dynindx != -1)
1896
0
        {
1897
0
          outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1898
0
          relocation = 0;
1899
0
        }
1900
0
      else
1901
0
        {
1902
0
          outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1903
1904
          /* NULL if we had an error.  */
1905
0
          relocation -= elf_hash_table (info)->tls_sec == NULL
1906
0
      ? 0 : elf_hash_table (info)->tls_sec->vma;
1907
0
        }
1908
1909
      /* Just "define" the initial contents in some
1910
         semi-logical way.  */
1911
0
      bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1912
1913
0
      outrel.r_offset = (sgot->output_section->vma
1914
0
             + sgot->output_offset
1915
0
             + off);
1916
0
      outrel.r_addend = relocation;
1917
0
      loc = srelgot->contents;
1918
0
      loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1919
      /* NULL if we had an error.  */
1920
0
      if (srelgot->contents != NULL)
1921
0
        bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1922
0
    }
1923
0
        else
1924
0
    off &= ~3;
1925
1926
0
        relocation = sgot->output_offset + off
1927
0
    + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1928
0
      }
1929
1930
    /* The GOT-relative offset to the GOT entry is the relocation,
1931
       or for R_CRIS_32_GD, the actual address of the GOT entry.  */
1932
0
    break;
1933
1934
0
  case R_CRIS_16_TPREL:
1935
0
  case R_CRIS_32_TPREL:
1936
    /* This relocation must only be performed against symbols
1937
       defined in an ordinary (non-DSO) object.  */
1938
0
    if (bfd_link_pic (info))
1939
0
      {
1940
0
        bfd_set_error (bfd_error_invalid_operation);
1941
1942
        /* We've already informed in cris_elf_check_relocs that
1943
     this is an error.  */
1944
0
        return false;
1945
0
      }
1946
1947
0
    if (h != NULL
1948
0
        && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1949
0
        && !(h->def_regular || ELF_COMMON_DEF_P (h))
1950
        /* If it's undefined, then an error message has already
1951
     been emitted.  */
1952
0
        && h->root.type != bfd_link_hash_undefined)
1953
0
      {
1954
0
        _bfd_error_handler
1955
    /* xgettext:c-format */
1956
0
    (_("%pB, section %pA: relocation %s is"
1957
0
       " not allowed for symbol: `%s'"
1958
0
       " which is defined outside the program,"
1959
0
       " perhaps a declaration mixup?"),
1960
0
     input_bfd,
1961
0
     input_section,
1962
0
     cris_elf_howto_table[r_type].name,
1963
0
     symname);
1964
0
        bfd_set_error (bfd_error_bad_value);
1965
0
        return false;
1966
0
      }
1967
1968
    /* NULL if we had an error.  */
1969
0
    relocation -= elf_hash_table (info)->tls_sec == NULL
1970
0
      ? 0
1971
0
      : (elf_hash_table (info)->tls_sec->vma
1972
0
         + elf_hash_table (info)->tls_size);
1973
1974
    /* The TLS-relative offset is the relocation.  */
1975
0
    break;
1976
1977
0
  default:
1978
0
    BFD_FAIL ();
1979
0
    return false;
1980
0
  }
1981
1982
0
      r = cris_final_link_relocate (howto, input_bfd, input_section,
1983
0
             contents, rel, relocation);
1984
1985
0
      if (r != bfd_reloc_ok)
1986
0
  {
1987
0
    const char * msg = (const char *) NULL;
1988
1989
0
    switch (r)
1990
0
      {
1991
0
      case bfd_reloc_overflow:
1992
0
        (*info->callbacks->reloc_overflow)
1993
0
    (info, (h ? &h->root : NULL), symname, howto->name,
1994
0
     (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1995
0
        if (additional_relocation_error_msg_count > 0)
1996
0
    {
1997
0
      additional_relocation_error_msg_count--;
1998
0
      switch (r_type)
1999
0
        {
2000
0
        case R_CRIS_16_GOTPLT:
2001
0
        case R_CRIS_16_GOT:
2002
2003
          /* Not just TLS is involved here, so we make
2004
       generation and message depend on -fPIC/-fpic
2005
       only.  */
2006
0
        case R_CRIS_16_GOT_TPREL:
2007
0
        case R_CRIS_16_GOT_GD:
2008
0
          _bfd_error_handler
2009
0
      (_("(too many global variables for -fpic:"
2010
0
         " recompile with -fPIC)"));
2011
0
          break;
2012
2013
0
        case R_CRIS_16_TPREL:
2014
0
        case R_CRIS_16_DTPREL:
2015
0
          _bfd_error_handler
2016
0
      (_("(thread-local data too big for -fpic or"
2017
0
         " -msmall-tls: recompile with -fPIC or"
2018
0
         " -mno-small-tls)"));
2019
0
          break;
2020
2021
          /* No known cause for overflow for other relocs.  */
2022
0
        default:
2023
0
          break;
2024
0
        }
2025
0
    }
2026
0
        break;
2027
2028
0
      case bfd_reloc_undefined:
2029
0
        (*info->callbacks->undefined_symbol)
2030
0
    (info, symname, input_bfd, input_section, rel->r_offset, true);
2031
0
        break;
2032
2033
0
      case bfd_reloc_outofrange:
2034
0
        msg = _("internal error: out of range error");
2035
0
        break;
2036
2037
0
      case bfd_reloc_notsupported:
2038
0
        msg = _("internal error: unsupported relocation error");
2039
0
        break;
2040
2041
0
      case bfd_reloc_dangerous:
2042
0
        msg = _("internal error: dangerous relocation");
2043
0
        break;
2044
2045
0
      default:
2046
0
        msg = _("internal error: unknown error");
2047
0
        break;
2048
0
      }
2049
2050
0
    if (msg)
2051
0
      (*info->callbacks->warning) (info, msg, symname, input_bfd,
2052
0
           input_section, rel->r_offset);
2053
0
  }
2054
0
    }
2055
2056
0
  return true;
2057
0
}
2058

2059
/* Finish up dynamic symbol handling.  We set the contents of various
2060
   dynamic sections here.  */
2061
2062
static bool
2063
elf_cris_finish_dynamic_symbol (bfd *output_bfd,
2064
        struct bfd_link_info *info,
2065
        struct elf_link_hash_entry *h,
2066
        Elf_Internal_Sym *sym)
2067
0
{
2068
0
  struct elf_cris_link_hash_table * htab;
2069
2070
  /* Where in the plt entry to put values.  */
2071
0
  int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2072
2073
  /* What offset to add to the distance to the first PLT entry for the
2074
     value at plt_off3.   */
2075
0
  int plt_off3_value_bias = 4;
2076
2077
  /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2078
     for PIC and non-PIC for v32 and pre-v32).  */
2079
0
  int plt_stub_offset = 8;
2080
0
  int plt_entry_size = PLT_ENTRY_SIZE;
2081
0
  const bfd_byte *plt_entry = elf_cris_plt_entry;
2082
0
  const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2083
2084
0
  htab = elf_cris_hash_table (info);
2085
2086
  /* Adjust the various PLT entry offsets.  */
2087
0
  if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2088
0
    {
2089
0
      plt_off2 = 14;
2090
0
      plt_off3 = 20;
2091
0
      plt_off3_value_bias = -2;
2092
0
      plt_stub_offset = 12;
2093
0
      plt_entry_size = PLT_ENTRY_SIZE_V32;
2094
0
      plt_entry = elf_cris_plt_entry_v32;
2095
0
      plt_pic_entry = elf_cris_pic_plt_entry_v32;
2096
0
    }
2097
2098
0
  if (h->plt.offset != (bfd_vma) -1)
2099
0
    {
2100
0
      asection *splt;
2101
0
      asection *sgotplt;
2102
0
      asection *srela;
2103
0
      bfd_vma got_base;
2104
2105
0
      bfd_vma gotplt_offset
2106
0
  = elf_cris_hash_entry (h)->gotplt_offset;
2107
0
      Elf_Internal_Rela rela;
2108
0
      bfd_byte *loc;
2109
0
      bool has_gotplt = gotplt_offset != 0;
2110
2111
      /* Get the index in the .rela.plt relocations for the .got.plt
2112
   entry that corresponds to this symbol.
2113
   We have to count backwards here, and the result is only valid
2114
   as an index into .rela.plt.  We also have to undo the effect
2115
   of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2116
   .got.plt) for which gotplt_offset is adjusted, because while
2117
   that entry goes into .got.plt, its relocation goes into
2118
   .rela.got, not .rela.plt.  (It's not PLT-specific; not to be
2119
   processed as part of the runtime lazy .rela.plt relocation).
2120
   FIXME: There be literal constants here...  */
2121
0
      bfd_vma rela_plt_index
2122
0
  = (htab->dtpmod_refcount != 0
2123
0
     ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2124
2125
      /* Get the offset into the .got table of the entry that corresponds
2126
   to this function.  Note that we embed knowledge that "incoming"
2127
   .got goes after .got.plt in the output without padding (pointer
2128
   aligned).  However, that knowledge is present in several other
2129
   places too.  */
2130
0
      bfd_vma got_offset
2131
0
  = (has_gotplt
2132
0
     ? gotplt_offset
2133
0
     : h->got.offset + htab->next_gotplt_entry);
2134
2135
      /* This symbol has an entry in the procedure linkage table.  Set it
2136
   up.  */
2137
2138
0
      BFD_ASSERT (h->dynindx != -1);
2139
2140
0
      splt = htab->root.splt;
2141
0
      sgotplt = htab->root.sgotplt;
2142
0
      srela = htab->root.srelplt;
2143
0
      BFD_ASSERT (splt != NULL && sgotplt != NULL
2144
0
      && (! has_gotplt || srela != NULL));
2145
2146
0
      got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2147
2148
      /* Fill in the entry in the procedure linkage table.  */
2149
0
      if (! bfd_link_pic (info))
2150
0
  {
2151
0
    memcpy (splt->contents + h->plt.offset, plt_entry,
2152
0
      plt_entry_size);
2153
2154
    /* We need to enter the absolute address of the GOT entry here.  */
2155
0
    bfd_put_32 (output_bfd, got_base + got_offset,
2156
0
          splt->contents + h->plt.offset + plt_off1);
2157
0
  }
2158
0
      else
2159
0
  {
2160
0
    memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2161
0
      plt_entry_size);
2162
0
    bfd_put_32 (output_bfd, got_offset,
2163
0
          splt->contents + h->plt.offset + plt_off1);
2164
0
  }
2165
2166
      /* Fill in the plt entry and make a relocation, if this is a "real"
2167
   PLT entry.  */
2168
0
      if (has_gotplt)
2169
0
  {
2170
    /* Fill in the offset to the reloc table.  */
2171
0
    bfd_put_32 (output_bfd,
2172
0
          rela_plt_index * sizeof (Elf32_External_Rela),
2173
0
          splt->contents + h->plt.offset + plt_off2);
2174
2175
    /* Fill in the offset to the first PLT entry, where to "jump".  */
2176
0
    bfd_put_32 (output_bfd,
2177
0
          - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2178
0
          splt->contents + h->plt.offset + plt_off3);
2179
2180
    /* Fill in the entry in the global offset table with the address of
2181
       the relocating stub.  */
2182
0
    bfd_put_32 (output_bfd,
2183
0
          (splt->output_section->vma
2184
0
           + splt->output_offset
2185
0
           + h->plt.offset
2186
0
           + plt_stub_offset),
2187
0
          sgotplt->contents + got_offset);
2188
2189
    /* Fill in the entry in the .rela.plt section.  */
2190
0
    rela.r_offset = (sgotplt->output_section->vma
2191
0
         + sgotplt->output_offset
2192
0
         + got_offset);
2193
0
    rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2194
0
    rela.r_addend = 0;
2195
0
    loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2196
0
    bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2197
0
  }
2198
2199
0
      if (!h->def_regular)
2200
0
  {
2201
    /* Mark the symbol as undefined, rather than as defined in
2202
       the .plt section.  Leave the value alone.  */
2203
0
    sym->st_shndx = SHN_UNDEF;
2204
2205
    /* FIXME: From elf32-sparc.c 2001-02-19 (1.18).  I still don't
2206
       know whether resetting the value is significant; if it really
2207
       is, rather than a quirk or bug in the sparc port, then I
2208
       believe we'd see this elsewhere.  */
2209
    /* If the symbol is weak, we do need to clear the value.
2210
       Otherwise, the PLT entry would provide a definition for
2211
       the symbol even if the symbol wasn't defined anywhere,
2212
       and so the symbol would never be NULL.  */
2213
0
    if (!h->ref_regular_nonweak)
2214
0
      sym->st_value = 0;
2215
0
  }
2216
0
    }
2217
2218
  /* For an ordinary program, we emit .got relocs only for symbols that
2219
     are in the dynamic-symbols table and are either defined by the
2220
     program or are undefined weak symbols, or are function symbols
2221
     where we do not output a PLT: the PLT reloc was output above and all
2222
     references to the function symbol are redirected to the PLT.  */
2223
0
  if (h->got.offset != (bfd_vma) -1
2224
0
      && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2225
0
      && (bfd_link_pic (info)
2226
0
    || (h->dynindx != -1
2227
0
        && h->plt.offset == (bfd_vma) -1
2228
0
        && !h->def_regular
2229
0
        && h->root.type != bfd_link_hash_undefweak)))
2230
0
    {
2231
0
      asection *sgot;
2232
0
      asection *srela;
2233
0
      Elf_Internal_Rela rela;
2234
0
      bfd_byte *loc;
2235
0
      bfd_byte *where;
2236
2237
      /* This symbol has an entry in the global offset table.  Set it up.  */
2238
2239
0
      sgot = htab->root.sgot;
2240
0
      srela = htab->root.srelgot;
2241
0
      BFD_ASSERT (sgot != NULL && srela != NULL);
2242
2243
0
      rela.r_offset = (sgot->output_section->vma
2244
0
           + sgot->output_offset
2245
0
           + (h->got.offset &~ (bfd_vma) 1));
2246
2247
      /* If this is a static link, or it is a -Bsymbolic link and the
2248
   symbol is defined locally or was forced to be local because
2249
   of a version file, we just want to emit a RELATIVE reloc.
2250
   The entry in the global offset table will already have been
2251
   initialized in the relocate_section function.  */
2252
0
      where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2253
0
      if (! elf_hash_table (info)->dynamic_sections_created
2254
0
    || (bfd_link_pic (info)
2255
0
        && (SYMBOLIC_BIND (info, h) || h->dynindx == -1)
2256
0
        && h->def_regular))
2257
0
  {
2258
0
    rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2259
0
    rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2260
0
  }
2261
0
      else
2262
0
  {
2263
0
    bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2264
0
    rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2265
0
    rela.r_addend = 0;
2266
0
  }
2267
2268
0
      loc = srela->contents;
2269
0
      loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2270
0
      bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2271
0
    }
2272
2273
0
  if (h->needs_copy)
2274
0
    {
2275
0
      asection *s;
2276
0
      Elf_Internal_Rela rela;
2277
0
      bfd_byte *loc;
2278
2279
      /* This symbol needs a copy reloc.  Set it up.  */
2280
2281
0
      BFD_ASSERT (h->dynindx != -1
2282
0
      && (h->root.type == bfd_link_hash_defined
2283
0
          || h->root.type == bfd_link_hash_defweak));
2284
2285
0
      if (h->root.u.def.section == htab->root.sdynrelro)
2286
0
  s = htab->root.sreldynrelro;
2287
0
      else
2288
0
  s = htab->root.srelbss;
2289
2290
0
      rela.r_offset = (h->root.u.def.value
2291
0
           + h->root.u.def.section->output_section->vma
2292
0
           + h->root.u.def.section->output_offset);
2293
0
      rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2294
0
      rela.r_addend = 0;
2295
0
      loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2296
0
      bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2297
0
    }
2298
2299
  /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  */
2300
0
  if (h == elf_hash_table (info)->hdynamic
2301
0
      || h == elf_hash_table (info)->hgot)
2302
0
    sym->st_shndx = SHN_ABS;
2303
2304
0
  return true;
2305
0
}
2306

2307
/* Finish up the dynamic sections.  Do *not* emit relocs here, as their
2308
   offsets were changed, as part of -z combreloc handling, from those we
2309
   computed.  */
2310
2311
static bool
2312
elf_cris_finish_dynamic_sections (bfd *output_bfd,
2313
          struct bfd_link_info *info)
2314
0
{
2315
0
  bfd *dynobj;
2316
0
  asection *sgot;
2317
0
  asection *sdyn;
2318
2319
0
  dynobj = elf_hash_table (info)->dynobj;
2320
2321
0
  sgot = elf_hash_table (info)->sgotplt;
2322
0
  BFD_ASSERT (sgot != NULL);
2323
0
  sdyn = bfd_get_linker_section (dynobj, ".dynamic");
2324
2325
0
  if (elf_hash_table (info)->dynamic_sections_created)
2326
0
    {
2327
0
      asection *splt;
2328
0
      Elf32_External_Dyn *dyncon, *dynconend;
2329
2330
0
      splt = elf_hash_table (info)->splt;
2331
0
      BFD_ASSERT (splt != NULL && sdyn != NULL);
2332
2333
0
      dyncon = (Elf32_External_Dyn *) sdyn->contents;
2334
0
      dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2335
0
      for (; dyncon < dynconend; dyncon++)
2336
0
  {
2337
0
    Elf_Internal_Dyn dyn;
2338
0
    asection *s;
2339
2340
0
    bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2341
2342
0
    switch (dyn.d_tag)
2343
0
      {
2344
0
      default:
2345
0
        break;
2346
2347
0
      case DT_PLTGOT:
2348
0
        dyn.d_un.d_ptr = sgot->output_section->vma + sgot->output_offset;
2349
0
        bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2350
0
        break;
2351
2352
0
      case DT_JMPREL:
2353
        /* Yes, we *can* have a .plt and no .plt.rela, for instance
2354
     if all symbols are found in the .got (not .got.plt).  */
2355
0
        s = elf_hash_table (info)->srelplt;
2356
0
        dyn.d_un.d_ptr = s != NULL ? (s->output_section->vma
2357
0
              + s->output_offset) : 0;
2358
0
        bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2359
0
        break;
2360
2361
0
      case DT_PLTRELSZ:
2362
0
        s = elf_hash_table (info)->srelplt;
2363
0
        if (s == NULL)
2364
0
    dyn.d_un.d_val = 0;
2365
0
        else
2366
0
    dyn.d_un.d_val = s->size;
2367
0
        bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2368
0
        break;
2369
0
      }
2370
0
  }
2371
2372
      /* Fill in the first entry in the procedure linkage table.  */
2373
0
      if (splt->size > 0)
2374
0
  {
2375
0
    if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2376
0
      {
2377
0
        if (bfd_link_pic (info))
2378
0
    memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2379
0
      PLT_ENTRY_SIZE_V32);
2380
0
        else
2381
0
    {
2382
0
      memcpy (splt->contents, elf_cris_plt0_entry_v32,
2383
0
        PLT_ENTRY_SIZE_V32);
2384
0
      bfd_put_32 (output_bfd,
2385
0
            sgot->output_section->vma
2386
0
            + sgot->output_offset + 4,
2387
0
            splt->contents + 4);
2388
2389
0
      elf_section_data (splt->output_section)->this_hdr.sh_entsize
2390
0
        = PLT_ENTRY_SIZE_V32;
2391
0
    }
2392
0
      }
2393
0
    else
2394
0
      {
2395
0
        if (bfd_link_pic (info))
2396
0
    memcpy (splt->contents, elf_cris_pic_plt0_entry,
2397
0
      PLT_ENTRY_SIZE);
2398
0
        else
2399
0
    {
2400
0
      memcpy (splt->contents, elf_cris_plt0_entry,
2401
0
        PLT_ENTRY_SIZE);
2402
0
      bfd_put_32 (output_bfd,
2403
0
            sgot->output_section->vma
2404
0
            + sgot->output_offset + 4,
2405
0
            splt->contents + 6);
2406
0
      bfd_put_32 (output_bfd,
2407
0
            sgot->output_section->vma
2408
0
            + sgot->output_offset + 8,
2409
0
            splt->contents + 14);
2410
2411
0
      elf_section_data (splt->output_section)->this_hdr.sh_entsize
2412
0
        = PLT_ENTRY_SIZE;
2413
0
    }
2414
0
      }
2415
0
  }
2416
0
    }
2417
2418
  /* Fill in the first three entries in the global offset table.  */
2419
0
  if (sgot->size > 0)
2420
0
    {
2421
0
      if (sdyn == NULL)
2422
0
  bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2423
0
      else
2424
0
  bfd_put_32 (output_bfd,
2425
0
        sdyn->output_section->vma + sdyn->output_offset,
2426
0
        sgot->contents);
2427
0
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2428
0
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2429
0
    }
2430
2431
0
  elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2432
2433
0
  return true;
2434
0
}
2435

2436
/* Return the section that should be marked against GC for a given
2437
   relocation.  */
2438
2439
static asection *
2440
cris_elf_gc_mark_hook (asection *sec,
2441
           struct bfd_link_info *info,
2442
           Elf_Internal_Rela *rel,
2443
           struct elf_link_hash_entry *h,
2444
           Elf_Internal_Sym *sym)
2445
0
{
2446
0
  enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2447
0
  if (h != NULL)
2448
0
    switch (r_type)
2449
0
      {
2450
0
      case R_CRIS_GNU_VTINHERIT:
2451
0
      case R_CRIS_GNU_VTENTRY:
2452
0
  return NULL;
2453
2454
0
      default:
2455
0
  break;
2456
0
      }
2457
2458
0
  return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2459
0
}
2460
2461
/* The elf_backend_plt_sym_val hook function.  */
2462
2463
static bfd_vma
2464
cris_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, const asection *plt,
2465
          const arelent *rel)
2466
0
{
2467
0
  bfd_size_type plt_entry_size;
2468
0
  bfd_size_type pltoffs;
2469
0
  bfd *abfd = plt->owner;
2470
2471
  /* Same for CRIS and CRIS v32; see elf_cris_(|pic_)plt_entry(|_v32)[].  */
2472
0
  bfd_size_type plt_entry_got_offset = 2;
2473
0
  bfd_size_type plt_sec_size;
2474
0
  bfd_size_type got_vma_for_dyn;
2475
0
  asection *got;
2476
2477
  /* FIXME: the .got section should be readily available also when
2478
     we're not linking.  */
2479
0
  if ((got = bfd_get_section_by_name (abfd, ".got")) == NULL)
2480
0
    return (bfd_vma) -1;
2481
2482
0
  plt_sec_size =  bfd_section_size (plt);
2483
0
  plt_entry_size
2484
0
    = (bfd_get_mach (abfd) == bfd_mach_cris_v32
2485
0
       ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2486
2487
  /* Data in PLT is GOT-relative for DYN, but absolute for EXE.  */
2488
0
  got_vma_for_dyn = (abfd->flags & EXEC_P) ? 0 : got->vma;
2489
2490
  /* Because we can have merged GOT entries; a single .got entry for
2491
     both GOT and the PLT part of the GOT (.got.plt), the index of the
2492
     reloc in .rela.plt is not the same as the index in the PLT.
2493
     Instead, we have to hunt down the GOT offset in the PLT that
2494
     corresponds to that of this reloc.  Unfortunately, we will only
2495
     be called for the .rela.plt relocs, so we'll miss synthetic
2496
     symbols for .plt entries with merged GOT entries.  (FIXME:
2497
     fixable by providing our own bfd_elf32_get_synthetic_symtab.
2498
     Doesn't seem worthwile at time of this writing.)  FIXME: we've
2499
     gone from O(1) to O(N) (N number of PLT entries) for finding each
2500
     PLT address.  Shouldn't matter in practice though.  */
2501
2502
0
  for (pltoffs = plt_entry_size;
2503
0
       pltoffs < plt_sec_size;
2504
0
       pltoffs += plt_entry_size)
2505
0
    {
2506
0
      bfd_size_type got_offset;
2507
0
      bfd_byte gotoffs_raw[4];
2508
2509
0
      if (!bfd_get_section_contents (abfd, (asection *) plt, gotoffs_raw,
2510
0
             pltoffs + plt_entry_got_offset,
2511
0
             sizeof (gotoffs_raw)))
2512
0
  return (bfd_vma) -1;
2513
2514
0
      got_offset = bfd_get_32 (abfd, gotoffs_raw);
2515
0
      if (got_offset + got_vma_for_dyn == rel->address)
2516
0
  return plt->vma + pltoffs;
2517
0
    }
2518
2519
  /* While it's tempting to BFD_ASSERT that we shouldn't get here,
2520
     that'd not be graceful behavior for invalid input.  */
2521
0
  return (bfd_vma) -1;
2522
0
}
2523
2524
/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2525
   entry but we found we will not create any.  Called when we find we will
2526
   not have any PLT for this symbol, by for example
2527
   elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2528
   or elf_cris_late_size_sections if no dynamic sections will be
2529
   created (we're only linking static objects).  */
2530
2531
static bool
2532
elf_cris_adjust_gotplt_to_got (struct elf_cris_link_hash_entry *h, void * p)
2533
0
{
2534
0
  struct bfd_link_info *info = (struct bfd_link_info *) p;
2535
2536
  /* A GOTPLT reloc, when activated, is supposed to be included into
2537
     the PLT refcount, when the symbol isn't set-or-forced local.  */
2538
0
  BFD_ASSERT (h->gotplt_refcount == 0
2539
0
        || h->root.plt.refcount == -1
2540
0
        || h->gotplt_refcount <= h->root.plt.refcount);
2541
2542
  /* If nobody wanted a GOTPLT with this symbol, we're done.  */
2543
0
  if (h->gotplt_refcount <= 0)
2544
0
    return true;
2545
2546
0
  if (h->reg_got_refcount > 0)
2547
0
    {
2548
      /* There's a GOT entry for this symbol.  Just adjust the refcounts.
2549
   Probably not necessary at this stage, but keeping them accurate
2550
   helps avoiding surprises later.  */
2551
0
      h->root.got.refcount += h->gotplt_refcount;
2552
0
      h->reg_got_refcount += h->gotplt_refcount;
2553
0
      h->gotplt_refcount = 0;
2554
0
    }
2555
0
  else
2556
0
    {
2557
      /* No GOT entry for this symbol.  We need to create one.  */
2558
0
      asection *sgot;
2559
0
      asection *srelgot;
2560
2561
0
      sgot = elf_hash_table (info)->sgot;
2562
0
      srelgot = elf_hash_table (info)->srelgot;
2563
2564
      /* Put accurate refcounts there.  */
2565
0
      BFD_ASSERT (h->root.got.refcount >= 0);
2566
0
      h->root.got.refcount += h->gotplt_refcount;
2567
0
      h->reg_got_refcount = h->gotplt_refcount;
2568
2569
0
      h->gotplt_refcount = 0;
2570
2571
      /* We always have a .got and a .rela.got section if there were
2572
   GOTPLT relocs in input.  */
2573
0
      BFD_ASSERT (sgot != NULL && srelgot != NULL);
2574
2575
      /* Allocate space in the .got section.  */
2576
0
      sgot->size += 4;
2577
2578
      /* Allocate relocation space.  */
2579
0
      srelgot->size += sizeof (Elf32_External_Rela);
2580
0
    }
2581
2582
0
  return true;
2583
0
}
2584
2585
/* Try to fold PLT entries with GOT entries.  There are two cases when we
2586
   want to do this:
2587
2588
   - When all PLT references are GOTPLT references, and there are GOT
2589
     references, and this is not the executable.  We don't have to
2590
     generate a PLT at all.
2591
2592
   - When there are both (ordinary) PLT references and GOT references,
2593
     and this isn't the executable.
2594
     We want to make the PLT reference use the ordinary GOT entry rather
2595
     than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2596
     since the GOT entry will have to be resolved at startup anyway.
2597
2598
   Though the latter case is handled when room for the PLT is allocated,
2599
   not here.
2600
2601
   By folding into the GOT, we may need a round-trip to a PLT in the
2602
   executable for calls, a loss in performance.  Still, losing a
2603
   reloc is a win in size and at least in start-up time.
2604
2605
   Note that this function is called before symbols are forced local by
2606
   version scripts.  The differing cases are handled by
2607
   elf_cris_hide_symbol.  */
2608
2609
static bool
2610
elf_cris_try_fold_plt_to_got (struct elf_cris_link_hash_entry *h, void * p)
2611
0
{
2612
0
  struct bfd_link_info *info = (struct bfd_link_info *) p;
2613
2614
  /* If there are no GOT references for this symbol, we can't fold any
2615
     other reference so there's nothing to do.  Likewise if there are no
2616
     PLT references; GOTPLT references included.  */
2617
0
  if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2618
0
    return true;
2619
2620
  /* GOTPLT relocs are supposed to be included into the PLT refcount.  */
2621
0
  BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2622
2623
0
  if (h->gotplt_refcount == h->root.plt.refcount)
2624
0
    {
2625
      /* The only PLT references are GOTPLT references, and there are GOT
2626
   references.  Convert PLT to GOT references.  */
2627
0
      if (! elf_cris_adjust_gotplt_to_got (h, info))
2628
0
  return false;
2629
2630
      /* Clear the PLT references, so no PLT will be created.  */
2631
0
      h->root.plt.offset = (bfd_vma) -1;
2632
0
    }
2633
2634
0
  return true;
2635
0
}
2636
2637
/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2638
   to use a GOT entry (and create one) rather than requiring a GOTPLT
2639
   entry.  */
2640
2641
static void
2642
elf_cris_hide_symbol (struct bfd_link_info *info,
2643
          struct elf_link_hash_entry *h,
2644
          bool force_local)
2645
0
{
2646
0
  elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2647
2648
0
  _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2649
0
}
2650
2651
/* Adjust a symbol defined by a dynamic object and referenced by a
2652
   regular object.  The current definition is in some section of the
2653
   dynamic object, but we're not including those sections.  We have to
2654
   change the definition to something the rest of the link can
2655
   understand.  */
2656
2657
static bool
2658
elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info,
2659
        struct elf_link_hash_entry *h)
2660
0
{
2661
0
  struct elf_cris_link_hash_table * htab;
2662
0
  bfd *dynobj;
2663
0
  asection *s;
2664
0
  asection *srel;
2665
0
  bfd_size_type plt_entry_size;
2666
2667
0
  htab = elf_cris_hash_table (info);
2668
0
  if (htab == NULL)
2669
0
    return false;
2670
2671
0
  dynobj = htab->root.dynobj;
2672
2673
  /* Make sure we know what is going on here.  */
2674
0
  BFD_ASSERT (dynobj != NULL
2675
0
        && (h->needs_plt
2676
0
      || h->is_weakalias
2677
0
      || (h->def_dynamic
2678
0
          && h->ref_regular
2679
0
          && !h->def_regular)));
2680
2681
0
  plt_entry_size
2682
0
    = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2683
0
       ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2684
2685
  /* If this is a function, put it in the procedure linkage table.  We
2686
     will fill in the contents of the procedure linkage table later,
2687
     when we know the address of the .got section.  */
2688
0
  if (h->type == STT_FUNC
2689
0
      || h->needs_plt)
2690
0
    {
2691
      /* If we link a program (not a DSO), we'll get rid of unnecessary
2692
   PLT entries; we point to the actual symbols -- even for pic
2693
   relocs, because a program built with -fpic should have the same
2694
   result as one built without -fpic, specifically considering weak
2695
   symbols.
2696
   FIXME: m68k and i386 differ here, for unclear reasons.  */
2697
0
      if (! bfd_link_pic (info)
2698
0
    && !h->def_dynamic)
2699
0
  {
2700
    /* This case can occur if we saw a PLT reloc in an input file,
2701
       but the symbol was not defined by a dynamic object.  In such
2702
       a case, we don't actually need to build a procedure linkage
2703
       table, and we can just do an absolute or PC reloc instead, or
2704
       change a .got.plt index to a .got index for GOTPLT relocs.  */
2705
0
    BFD_ASSERT (h->needs_plt);
2706
0
    h->needs_plt = 0;
2707
0
    h->plt.offset = (bfd_vma) -1;
2708
0
    return
2709
0
      elf_cris_adjust_gotplt_to_got ((struct
2710
0
              elf_cris_link_hash_entry *) h,
2711
0
             info);
2712
0
  }
2713
2714
      /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2715
   where a pointer-equivalent symbol was unimportant (i.e. more
2716
   like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2717
   of the PLT.  We can't for the executable, because the GOT
2718
   entries will point to the PLT there (and be constant).  */
2719
0
      if (bfd_link_pic (info)
2720
0
    && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2721
0
              h, info))
2722
0
  return false;
2723
2724
      /* GC or folding may have rendered this entry unused.  */
2725
0
      if (h->plt.refcount <= 0)
2726
0
  {
2727
0
    h->needs_plt = 0;
2728
0
    h->plt.offset = (bfd_vma) -1;
2729
0
    return true;
2730
0
  }
2731
2732
      /* Make sure this symbol is output as a dynamic symbol.  */
2733
0
      if (h->dynindx == -1)
2734
0
  {
2735
0
    if (! bfd_elf_link_record_dynamic_symbol (info, h))
2736
0
      return false;
2737
0
  }
2738
2739
0
      s = htab->root.splt;
2740
0
      BFD_ASSERT (s != NULL);
2741
2742
      /* If this is the first .plt entry, make room for the special
2743
   first entry.  */
2744
0
      if (s->size == 0)
2745
0
  s->size += plt_entry_size;
2746
2747
      /* If this symbol is not defined in a regular file, and we are
2748
   not generating a shared library, then set the symbol to this
2749
   location in the .plt.  */
2750
0
      if (!bfd_link_pic (info)
2751
0
    && !h->def_regular)
2752
0
  {
2753
0
    h->root.u.def.section = s;
2754
0
    h->root.u.def.value = s->size;
2755
0
  }
2756
2757
      /* If there's already a GOT entry, use that, not a .got.plt.  A
2758
   GOT field still has a reference count when we get here; it's
2759
   not yet changed to an offset.  We can't do this for an
2760
   executable, because then the reloc associated with the PLT
2761
   would get a non-PLT reloc pointing to the PLT.  FIXME: Move
2762
   this to elf_cris_try_fold_plt_to_got.  */
2763
0
      if (bfd_link_pic (info) && h->got.refcount > 0)
2764
0
  {
2765
0
    h->got.refcount += h->plt.refcount;
2766
2767
    /* Mark the PLT offset to use the GOT entry by setting the low
2768
       bit in the plt offset; it is always a multiple of
2769
       plt_entry_size (which is at least a multiple of 2).  */
2770
0
    BFD_ASSERT ((s->size % plt_entry_size) == 0);
2771
2772
    /* Change the PLT refcount to an offset.  */
2773
0
    h->plt.offset = s->size;
2774
2775
    /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2776
       that the got entry should be used instead.  */
2777
0
    BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2778
0
           h)->gotplt_offset == 0);
2779
2780
    /* Make room for this entry.  */
2781
0
    s->size += plt_entry_size;
2782
2783
0
    return true;
2784
0
  }
2785
2786
      /* No GOT reference for this symbol; prepare for an ordinary PLT.  */
2787
0
      h->plt.offset = s->size;
2788
2789
      /* Make room for this entry.  */
2790
0
      s->size += plt_entry_size;
2791
2792
      /* We also need to make an entry in the .got.plt section, which
2793
   will be placed in the .got section by the linker script.  */
2794
0
      ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2795
0
  = htab->next_gotplt_entry;
2796
0
      htab->next_gotplt_entry += 4;
2797
2798
0
      s = htab->root.sgotplt;
2799
0
      BFD_ASSERT (s != NULL);
2800
0
      s->size += 4;
2801
2802
      /* We also need to make an entry in the .rela.plt section.  */
2803
2804
0
      s = htab->root.srelplt;
2805
0
      BFD_ASSERT (s != NULL);
2806
0
      s->size += sizeof (Elf32_External_Rela);
2807
2808
0
      return true;
2809
0
    }
2810
2811
  /* Reinitialize the plt offset now that it is not used as a reference
2812
     count any more.  */
2813
0
  h->plt.offset = (bfd_vma) -1;
2814
2815
  /* If this is a weak symbol, and there is a real definition, the
2816
     processor independent code will have arranged for us to see the
2817
     real definition first, and we can just use the same value.  */
2818
0
  if (h->is_weakalias)
2819
0
    {
2820
0
      struct elf_link_hash_entry *def = weakdef (h);
2821
0
      BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2822
0
      h->root.u.def.section = def->root.u.def.section;
2823
0
      h->root.u.def.value = def->root.u.def.value;
2824
0
      return true;
2825
0
    }
2826
2827
  /* This is a reference to a symbol defined by a dynamic object which
2828
     is not a function.  */
2829
2830
  /* If we are creating a shared library, we must presume that the
2831
     only references to the symbol are via the global offset table.
2832
     For such cases we need not do anything here; the relocations will
2833
     be handled correctly by relocate_section.  */
2834
0
  if (bfd_link_pic (info))
2835
0
    return true;
2836
2837
  /* If there are no references to this symbol that do not use the
2838
     GOT, we don't need to generate a copy reloc.  */
2839
0
  if (!h->non_got_ref)
2840
0
    return true;
2841
2842
  /* We must allocate the symbol in our .dynbss section, which will
2843
     become part of the .bss section of the executable.  There will be
2844
     an entry for this symbol in the .dynsym section.  The dynamic
2845
     object will contain position independent code, so all references
2846
     from the dynamic object to this symbol will go through the global
2847
     offset table.  The dynamic linker will use the .dynsym entry to
2848
     determine the address it must put in the global offset table, so
2849
     both the dynamic object and the regular object will refer to the
2850
     same memory location for the variable.  */
2851
2852
  /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
2853
     copy the initial value out of the dynamic object and into the
2854
     runtime process image.  We need to remember the offset into the
2855
     .rela.bss section we are going to use.  */
2856
2857
0
  if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2858
0
    {
2859
0
      s = htab->root.sdynrelro;
2860
0
      srel = htab->root.sreldynrelro;
2861
0
    }
2862
0
  else
2863
0
    {
2864
0
      s = htab->root.sdynbss;
2865
0
      srel = htab->root.srelbss;
2866
0
    }
2867
0
  if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2868
0
    {
2869
0
      BFD_ASSERT (srel != NULL);
2870
0
      srel->size += sizeof (Elf32_External_Rela);
2871
0
      h->needs_copy = 1;
2872
0
    }
2873
2874
0
  BFD_ASSERT (s != NULL);
2875
2876
0
  return _bfd_elf_adjust_dynamic_copy (info, h, s);
2877
0
}
2878
2879
/* Adjust our "subclass" elements for an indirect symbol.  */
2880
2881
static void
2882
elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
2883
             struct elf_link_hash_entry *dir,
2884
             struct elf_link_hash_entry *ind)
2885
0
{
2886
0
  struct elf_cris_link_hash_entry *edir, *eind;
2887
2888
0
  edir = (struct elf_cris_link_hash_entry *) dir;
2889
0
  eind = (struct elf_cris_link_hash_entry *) ind;
2890
2891
  /* Only indirect symbols are replaced; we're not interested in
2892
     updating any of EIND's fields for other symbols.  */
2893
0
  if (eind->root.root.type != bfd_link_hash_indirect)
2894
0
    {
2895
      /* Still, we need to copy flags for e.g. weak definitions.  */
2896
0
      _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2897
0
      return;
2898
0
    }
2899
2900
0
  BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
2901
2902
0
#define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
2903
0
#define XMOVE(F) XMOVOPZ (F, +=, 0)
2904
0
  if (eind->pcrel_relocs_copied != NULL)
2905
0
    {
2906
0
      if (edir->pcrel_relocs_copied != NULL)
2907
0
  {
2908
0
    struct elf_cris_pcrel_relocs_copied **pp;
2909
0
    struct elf_cris_pcrel_relocs_copied *p;
2910
2911
    /* Add reloc counts against the indirect sym to the direct sym
2912
       list.  Merge any entries against the same section.  */
2913
0
    for (pp = &eind->pcrel_relocs_copied; *pp != NULL;)
2914
0
      {
2915
0
        struct elf_cris_pcrel_relocs_copied *q;
2916
0
        p = *pp;
2917
0
        for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next)
2918
0
    if (q->section == p->section)
2919
0
      {
2920
0
        q->count += p->count;
2921
0
        *pp = p->next;
2922
0
        break;
2923
0
      }
2924
0
        if (q == NULL)
2925
0
    pp = &p->next;
2926
0
      }
2927
0
    *pp = edir->pcrel_relocs_copied;
2928
0
  }
2929
0
      XMOVOPZ (pcrel_relocs_copied, =, NULL);
2930
0
    }
2931
0
  XMOVE (gotplt_refcount);
2932
0
  XMOVE (gotplt_offset);
2933
0
  XMOVE (reg_got_refcount);
2934
0
  XMOVE (tprel_refcount);
2935
0
  XMOVE (dtp_refcount);
2936
0
#undef XMOVE
2937
0
#undef XMOVOPZ
2938
2939
0
  _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2940
0
}
2941
2942
/* Look through the relocs for a section during the first phase.  */
2943
2944
static bool
2945
cris_elf_check_relocs (bfd *abfd,
2946
           struct bfd_link_info *info,
2947
           asection *sec,
2948
           const Elf_Internal_Rela *relocs)
2949
0
{
2950
0
  struct elf_cris_link_hash_table * htab;
2951
0
  bfd *dynobj;
2952
0
  Elf_Internal_Shdr *symtab_hdr;
2953
0
  struct elf_link_hash_entry **sym_hashes;
2954
0
  bfd_signed_vma *local_got_refcounts;
2955
0
  const Elf_Internal_Rela *rel;
2956
0
  const Elf_Internal_Rela *rel_end;
2957
0
  asection *sgot;
2958
0
  asection *srelgot;
2959
0
  asection *sreloc;
2960
2961
0
  if (bfd_link_relocatable (info))
2962
0
    return true;
2963
2964
0
  htab = elf_cris_hash_table (info);
2965
0
  if (htab == NULL)
2966
0
    return false;
2967
2968
0
  dynobj = elf_hash_table (info)->dynobj;
2969
0
  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2970
0
  sym_hashes = elf_sym_hashes (abfd);
2971
0
  local_got_refcounts = elf_local_got_refcounts (abfd);
2972
2973
0
  sgot = NULL;
2974
0
  srelgot = NULL;
2975
0
  sreloc = NULL;
2976
2977
0
  rel_end = relocs + sec->reloc_count;
2978
0
  for (rel = relocs; rel < rel_end; rel++)
2979
0
    {
2980
0
      struct elf_link_hash_entry *h;
2981
0
      unsigned long r_symndx;
2982
0
      enum elf_cris_reloc_type r_type;
2983
0
      bfd_signed_vma got_element_size = 4;
2984
0
      unsigned long r_symndx_lgot = INT_MAX;
2985
2986
0
      r_symndx = ELF32_R_SYM (rel->r_info);
2987
0
      if (r_symndx < symtab_hdr->sh_info)
2988
0
  {
2989
0
    h = NULL;
2990
0
    r_symndx_lgot = LGOT_REG_NDX (r_symndx);
2991
0
  }
2992
0
      else
2993
0
  {
2994
0
    h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2995
0
    while (h->root.type == bfd_link_hash_indirect
2996
0
     || h->root.type == bfd_link_hash_warning)
2997
0
      h = (struct elf_link_hash_entry *) h->root.u.i.link;
2998
0
  }
2999
3000
0
      r_type = ELF32_R_TYPE (rel->r_info);
3001
3002
      /* Some relocs require linker-created sections; we need to hang them
3003
   on the first input bfd we found that contained dynamic relocs.  */
3004
0
      switch (r_type)
3005
0
  {
3006
0
  case R_CRIS_32_DTPREL:
3007
0
    if ((sec->flags & SEC_ALLOC) == 0)
3008
      /* This'd be a .dtpreld entry in e.g. debug info.  We have
3009
         several different switch statements below, but none of
3010
         that is needed; we need no preparations for resolving
3011
         R_CRIS_32_DTPREL into a non-allocated section (debug
3012
         info), so let's just move on to the next
3013
         relocation.  */
3014
0
      continue;
3015
    /* Fall through.  */
3016
0
  case R_CRIS_16_DTPREL:
3017
    /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3018
       entry at index 3. */
3019
0
    if (htab->dtpmod_refcount == 0)
3020
0
      htab->next_gotplt_entry += 8;
3021
3022
0
    htab->dtpmod_refcount++;
3023
    /* Fall through.  */
3024
3025
0
  case R_CRIS_32_IE:
3026
0
  case R_CRIS_32_GD:
3027
0
  case R_CRIS_16_GOT_GD:
3028
0
  case R_CRIS_32_GOT_GD:
3029
0
  case R_CRIS_32_GOT_TPREL:
3030
0
  case R_CRIS_16_GOT_TPREL:
3031
0
  case R_CRIS_16_GOT:
3032
0
  case R_CRIS_32_GOT:
3033
0
  case R_CRIS_32_GOTREL:
3034
0
  case R_CRIS_32_PLT_GOTREL:
3035
0
  case R_CRIS_32_PLT_PCREL:
3036
0
  case R_CRIS_16_GOTPLT:
3037
0
  case R_CRIS_32_GOTPLT:
3038
0
    if (dynobj == NULL)
3039
0
      {
3040
0
        elf_hash_table (info)->dynobj = dynobj = abfd;
3041
3042
        /* We could handle this if we can get a handle on the
3043
     output bfd in elf_cris_adjust_dynamic_symbol.  Failing
3044
     that, we must insist on dynobj being a specific mach.  */
3045
0
        if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3046
0
    {
3047
0
      _bfd_error_handler
3048
        /* xgettext:c-format */
3049
0
        (_("%pB, section %pA: v10/v32 compatible object"
3050
0
           " must not contain a PIC relocation"),
3051
0
         abfd, sec);
3052
0
      return false;
3053
0
    }
3054
0
      }
3055
3056
0
    if (sgot == NULL)
3057
0
      {
3058
        /* We may have a dynobj but no .got section, if machine-
3059
     independent parts of the linker found a reason to create
3060
     a dynobj.  We want to create the .got section now, so we
3061
     can assume it's always present whenever there's a dynobj.
3062
     It's ok to call this function more than once.  */
3063
0
        if (!_bfd_elf_create_got_section (dynobj, info))
3064
0
    return false;
3065
3066
0
        sgot = elf_hash_table (info)->sgot;
3067
0
        srelgot = elf_hash_table (info)->srelgot;
3068
0
      }
3069
3070
0
    if (local_got_refcounts == NULL)
3071
0
      {
3072
0
        bfd_size_type amt;
3073
3074
        /* We use index local_got_refcounts[-1] to count all
3075
     GOT-relative relocations that do not have explicit
3076
     GOT entries.  */
3077
0
        amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3078
0
        amt *= sizeof (bfd_signed_vma);
3079
0
        local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3080
0
        if (local_got_refcounts == NULL)
3081
0
    return false;
3082
3083
0
        local_got_refcounts++;
3084
0
        elf_local_got_refcounts (abfd) = local_got_refcounts;
3085
0
      }
3086
0
    break;
3087
3088
0
  default:
3089
0
    break;
3090
0
  }
3091
3092
      /* Warn and error for invalid input.  */
3093
0
      switch (r_type)
3094
0
  {
3095
0
  case R_CRIS_32_IE:
3096
0
  case R_CRIS_32_TPREL:
3097
0
  case R_CRIS_16_TPREL:
3098
0
  case R_CRIS_32_GD:
3099
0
    if (bfd_link_pic (info))
3100
0
      {
3101
0
        _bfd_error_handler
3102
    /* xgettext:c-format */
3103
0
    (_("%pB, section %pA:\n  relocation %s not valid"
3104
0
       " in a shared object;"
3105
0
       " typically an option mixup, recompile with -fPIC"),
3106
0
     abfd,
3107
0
     sec,
3108
0
     cris_elf_howto_table[r_type].name);
3109
        /* Don't return FALSE here; we want messages for all of
3110
     these and the error behavior is ungraceful
3111
     anyway.  */
3112
0
      }
3113
0
  default:
3114
0
    break;
3115
0
  }
3116
3117
0
      switch (r_type)
3118
0
  {
3119
0
  case R_CRIS_32_GD:
3120
0
  case R_CRIS_16_GOT_GD:
3121
0
  case R_CRIS_32_GOT_GD:
3122
    /* These are requests for tls_index entries, run-time R_CRIS_DTP.  */
3123
0
    got_element_size = 8;
3124
0
    r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3125
0
    break;
3126
3127
0
  case R_CRIS_16_DTPREL:
3128
0
  case R_CRIS_32_DTPREL:
3129
    /* These two just request for the constant-index
3130
       module-local tls_index-sized GOT entry, which we add
3131
       elsewhere.  */
3132
0
    break;
3133
3134
0
  case R_CRIS_32_IE:
3135
0
  case R_CRIS_32_GOT_TPREL:
3136
0
  case R_CRIS_16_GOT_TPREL:
3137
0
    r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3138
3139
    /* Those relocs also require that a DSO is of type
3140
       Initial Exec.  Like other targets, we don't reset this
3141
       flag even if the relocs are GC:ed away.  */
3142
0
    if (bfd_link_pic (info))
3143
0
      info->flags |= DF_STATIC_TLS;
3144
0
    break;
3145
3146
    /* Let's list the other assembler-generated TLS-relocs too,
3147
       just to show that they're not forgotten. */
3148
0
  case R_CRIS_16_TPREL:
3149
0
  case R_CRIS_32_TPREL:
3150
0
  default:
3151
0
    break;
3152
0
  }
3153
3154
0
      switch (r_type)
3155
0
  {
3156
0
  case R_CRIS_16_GOTPLT:
3157
0
  case R_CRIS_32_GOTPLT:
3158
    /* Mark that we need a GOT entry if the PLT entry (and its GOT
3159
       entry) is eliminated.  We can only do this for a non-local
3160
       symbol.  */
3161
0
    if (h != NULL)
3162
0
      {
3163
0
        elf_cris_hash_entry (h)->gotplt_refcount++;
3164
0
        goto handle_gotplt_reloc;
3165
0
      }
3166
    /* If h is NULL then this is a local symbol, and we must make a
3167
       GOT entry for it, so handle it like a GOT reloc.  */
3168
    /* Fall through.  */
3169
3170
0
  case R_CRIS_32_IE:
3171
0
  case R_CRIS_32_GD:
3172
0
  case R_CRIS_16_GOT_GD:
3173
0
  case R_CRIS_32_GOT_GD:
3174
0
  case R_CRIS_32_GOT_TPREL:
3175
0
  case R_CRIS_16_GOT_TPREL:
3176
0
  case R_CRIS_16_GOT:
3177
0
  case R_CRIS_32_GOT:
3178
    /* This symbol requires a global offset table entry.  */
3179
0
    if (h != NULL)
3180
0
      {
3181
0
        if (h->got.refcount == 0)
3182
0
    {
3183
      /* Make sure this symbol is output as a dynamic symbol.  */
3184
0
      if (h->dynindx == -1)
3185
0
        {
3186
0
          if (!bfd_elf_link_record_dynamic_symbol (info, h))
3187
0
      return false;
3188
0
        }
3189
0
    }
3190
3191
        /* Update the sum of reloc counts for this symbol.  */
3192
0
        h->got.refcount++;
3193
3194
0
        switch (r_type)
3195
0
    {
3196
0
    case R_CRIS_16_GOT:
3197
0
    case R_CRIS_32_GOT:
3198
0
      if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3199
0
        {
3200
          /* Allocate space in the .got section.  */
3201
0
          sgot->size += got_element_size;
3202
          /* Allocate relocation space.  */
3203
0
          srelgot->size += sizeof (Elf32_External_Rela);
3204
0
        }
3205
0
      elf_cris_hash_entry (h)->reg_got_refcount++;
3206
0
      break;
3207
3208
0
    case R_CRIS_32_GD:
3209
0
    case R_CRIS_16_GOT_GD:
3210
0
    case R_CRIS_32_GOT_GD:
3211
0
      if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3212
0
        {
3213
          /* Allocate space in the .got section.  */
3214
0
          sgot->size += got_element_size;
3215
          /* Allocate relocation space.  */
3216
0
          srelgot->size += sizeof (Elf32_External_Rela);
3217
0
        }
3218
0
      elf_cris_hash_entry (h)->dtp_refcount++;
3219
0
      break;
3220
3221
0
    case R_CRIS_32_IE:
3222
0
    case R_CRIS_32_GOT_TPREL:
3223
0
    case R_CRIS_16_GOT_TPREL:
3224
0
      if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3225
0
        {
3226
          /* Allocate space in the .got section.  */
3227
0
          sgot->size += got_element_size;
3228
          /* Allocate relocation space.  */
3229
0
          srelgot->size += sizeof (Elf32_External_Rela);
3230
0
        }
3231
0
      elf_cris_hash_entry (h)->tprel_refcount++;
3232
0
      break;
3233
3234
0
    default:
3235
0
      BFD_FAIL ();
3236
0
      break;
3237
0
    }
3238
0
      }
3239
0
    else
3240
0
      {
3241
        /* This is a global offset table entry for a local symbol.  */
3242
0
        if (local_got_refcounts[r_symndx_lgot] == 0)
3243
0
    {
3244
0
      sgot->size += got_element_size;
3245
0
      if (bfd_link_pic (info))
3246
0
        {
3247
          /* If we are generating a shared object, we need
3248
       to output a R_CRIS_RELATIVE reloc so that the
3249
       dynamic linker can adjust this GOT entry.
3250
       Similarly for non-regular got entries.  */
3251
0
          srelgot->size += sizeof (Elf32_External_Rela);
3252
0
        }
3253
0
    }
3254
        /* Update the reloc-specific count.  */
3255
0
        local_got_refcounts[r_symndx_lgot]++;
3256
3257
        /* This one is the sum of all the others.  */
3258
0
        local_got_refcounts[r_symndx]++;
3259
0
      }
3260
0
    break;
3261
3262
0
  case R_CRIS_16_DTPREL:
3263
0
  case R_CRIS_32_DTPREL:
3264
0
  case R_CRIS_32_GOTREL:
3265
    /* This reference requires a global offset table.
3266
       FIXME: The actual refcount isn't used currently; the .got
3267
       section can't be removed if there were any references in the
3268
       input.  */
3269
0
    local_got_refcounts[-1]++;
3270
0
    break;
3271
3272
0
  handle_gotplt_reloc:
3273
3274
0
  case R_CRIS_32_PLT_GOTREL:
3275
    /* This reference requires a global offset table.  */
3276
0
    local_got_refcounts[-1]++;
3277
    /* Fall through.  */
3278
3279
0
  case R_CRIS_32_PLT_PCREL:
3280
    /* This symbol requires a procedure linkage table entry.  We
3281
       actually build the entry in adjust_dynamic_symbol,
3282
       because this might be a case of linking PIC code which is
3283
       never referenced by a dynamic object, in which case we
3284
       don't need to generate a procedure linkage table entry
3285
       after all.  */
3286
3287
    /* Beware: if we'd check for visibility of the symbol here
3288
       (and not marking the need for a PLT when non-visible), we'd
3289
       get into trouble with keeping handling consistent with
3290
       regards to relocs found before definition and GOTPLT
3291
       handling.  Eliminable PLT entries will be dealt with later
3292
       anyway.  */
3293
0
    if (h == NULL)
3294
0
      continue;
3295
3296
0
    h->needs_plt = 1;
3297
3298
    /* If the symbol is forced local, the refcount is unavailable.  */
3299
0
    if (h->plt.refcount != -1)
3300
0
      h->plt.refcount++;
3301
0
    break;
3302
3303
0
  case R_CRIS_8:
3304
0
  case R_CRIS_16:
3305
0
  case R_CRIS_32:
3306
    /* Let's help debug shared library creation.  Any of these
3307
       relocs *can* be used in shared libs, but pages containing
3308
       them cannot be shared, so they're not appropriate for
3309
       common use.  Don't warn for sections we don't care about,
3310
       such as debug sections or non-constant sections.  We
3311
       can't help tables of (global) function pointers, for
3312
       example, though they must be emitted in a (writable) data
3313
       section to avoid having impure text sections.  */
3314
0
    if (bfd_link_pic (info)
3315
0
        && (sec->flags & SEC_ALLOC) != 0
3316
0
        && (sec->flags & SEC_READONLY) != 0)
3317
0
      {
3318
        /* FIXME: How do we make this optionally a warning only?  */
3319
0
        _bfd_error_handler
3320
    /* xgettext:c-format */
3321
0
    (_("%pB, section %pA: relocation %s should not"
3322
0
       " be used in a shared object; recompile with -fPIC"),
3323
0
     abfd,
3324
0
     sec,
3325
0
     cris_elf_howto_table[r_type].name);
3326
0
      }
3327
3328
    /* We don't need to handle relocs into sections not going into
3329
       the "real" output.  */
3330
0
    if ((sec->flags & SEC_ALLOC) == 0)
3331
0
      break;
3332
3333
0
    if (h != NULL)
3334
0
      {
3335
0
        h->non_got_ref = 1;
3336
3337
        /* Make sure a plt entry is created for this symbol if it
3338
     turns out to be a function defined by a dynamic object.  */
3339
0
        if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3340
0
    h->plt.refcount++;
3341
0
      }
3342
3343
    /* If we are creating a shared library and this is not a local
3344
       symbol, we need to copy the reloc into the shared library.
3345
       However when linking with -Bsymbolic and this is a global
3346
       symbol which is defined in an object we are including in the
3347
       link (i.e., DEF_REGULAR is set), then we can resolve the
3348
       reloc directly.  At this point we have not seen all the input
3349
       files, so it is possible that DEF_REGULAR is not set now but
3350
       will be set later (it is never cleared).  In case of a weak
3351
       definition, DEF_REGULAR may be cleared later by a strong
3352
       definition in a shared library.  We account for that
3353
       possibility below by storing information in the relocs_copied
3354
       field of the hash table entry.  A similar situation occurs
3355
       when creating shared libraries and symbol visibility changes
3356
       render the symbol local.  */
3357
3358
    /* No need to do anything if we're not creating a shared object.  */
3359
0
    if (! bfd_link_pic (info)
3360
0
        || (h != NULL && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
3361
0
      break;
3362
3363
    /* We may need to create a reloc section in the dynobj and made room
3364
       for this reloc.  */
3365
0
    if (sreloc == NULL)
3366
0
      {
3367
0
        sreloc = _bfd_elf_make_dynamic_reloc_section
3368
0
    (sec, dynobj, 2, abfd, /*rela?*/ true);
3369
3370
0
        if (sreloc == NULL)
3371
0
    return false;
3372
0
      }
3373
3374
0
    if (sec->flags & SEC_READONLY)
3375
0
      info->flags |= DF_TEXTREL;
3376
3377
0
    sreloc->size += sizeof (Elf32_External_Rela);
3378
0
    break;
3379
3380
0
  case R_CRIS_8_PCREL:
3381
0
  case R_CRIS_16_PCREL:
3382
0
  case R_CRIS_32_PCREL:
3383
0
    if (h != NULL)
3384
0
      {
3385
0
        h->non_got_ref = 1;
3386
3387
        /* Make sure a plt entry is created for this symbol if it
3388
     turns out to be a function defined by a dynamic object.  */
3389
0
        if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3390
0
    h->plt.refcount++;
3391
0
      }
3392
3393
    /* If we are creating a shared library and this is not a local
3394
       symbol, we need to copy the reloc into the shared library.
3395
       However when linking with -Bsymbolic and this is a global
3396
       symbol which is defined in an object we are including in the
3397
       link (i.e., DEF_REGULAR is set), then we can resolve the
3398
       reloc directly.  At this point we have not seen all the input
3399
       files, so it is possible that DEF_REGULAR is not set now but
3400
       will be set later (it is never cleared).  In case of a weak
3401
       definition, DEF_REGULAR may be cleared later by a strong
3402
       definition in a shared library.  We account for that
3403
       possibility below by storing information in the relocs_copied
3404
       field of the hash table entry.  A similar situation occurs
3405
       when creating shared libraries and symbol visibility changes
3406
       render the symbol local.  */
3407
3408
    /* No need to do anything if we're not creating a shared object.  */
3409
0
    if (! bfd_link_pic (info))
3410
0
      break;
3411
3412
    /* We don't need to handle relocs into sections not going into
3413
       the "real" output.  */
3414
0
    if ((sec->flags & SEC_ALLOC) == 0)
3415
0
      break;
3416
3417
    /* If the symbol is local, then we know already we can
3418
       eliminate the reloc.  */
3419
0
    if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3420
0
      break;
3421
3422
    /* If this is with -Bsymbolic and the symbol isn't weak, and
3423
       is defined by an ordinary object (the ones we include in
3424
       this shared library) then we can also eliminate the
3425
       reloc.  See comment above for more eliminable cases which
3426
       we can't identify at this time.  */
3427
0
    if (SYMBOLIC_BIND (info, h)
3428
0
        && h->root.type != bfd_link_hash_defweak
3429
0
        && h->def_regular)
3430
0
      break;
3431
3432
    /* We may need to create a reloc section in the dynobj and made room
3433
       for this reloc.  */
3434
0
    if (sreloc == NULL)
3435
0
      {
3436
0
        sreloc = _bfd_elf_make_dynamic_reloc_section
3437
0
    (sec, dynobj, 2, abfd, /*rela?*/ true);
3438
3439
0
        if (sreloc == NULL)
3440
0
    return false;
3441
0
      }
3442
3443
0
    sreloc->size += sizeof (Elf32_External_Rela);
3444
3445
    /* We count the number of PC relative relocations we have
3446
       entered for this symbol, so that we can discard them
3447
       again if the symbol is later defined by a regular object.
3448
       We know that h is really a pointer to an
3449
       elf_cris_link_hash_entry.  */
3450
0
    {
3451
0
      struct elf_cris_link_hash_entry *eh;
3452
0
      struct elf_cris_pcrel_relocs_copied *p;
3453
3454
0
      eh = elf_cris_hash_entry (h);
3455
3456
0
      for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3457
0
        if (p->section == sec)
3458
0
    break;
3459
3460
0
      if (p == NULL)
3461
0
        {
3462
0
    p = ((struct elf_cris_pcrel_relocs_copied *)
3463
0
         bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3464
0
    if (p == NULL)
3465
0
      return false;
3466
0
    p->next = eh->pcrel_relocs_copied;
3467
0
    eh->pcrel_relocs_copied = p;
3468
0
    p->section = sec;
3469
0
    p->count = 0;
3470
0
    p->r_type = r_type;
3471
0
        }
3472
3473
0
      ++p->count;
3474
0
    }
3475
0
    break;
3476
3477
  /* This relocation describes the C++ object vtable hierarchy.
3478
     Reconstruct it for later use during GC.  */
3479
0
  case R_CRIS_GNU_VTINHERIT:
3480
0
    if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3481
0
      return false;
3482
0
    break;
3483
3484
  /* This relocation describes which C++ vtable entries are actually
3485
     used.  Record for later use during GC.  */
3486
0
  case R_CRIS_GNU_VTENTRY:
3487
0
    if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3488
0
      return false;
3489
0
    break;
3490
3491
0
  case R_CRIS_16_TPREL:
3492
0
  case R_CRIS_32_TPREL:
3493
    /* Already warned above, when necessary.  */
3494
0
    break;
3495
3496
0
  default:
3497
    /* Other relocs do not appear here.  */
3498
0
    bfd_set_error (bfd_error_bad_value);
3499
0
    return false;
3500
0
  }
3501
0
    }
3502
3503
0
  return true;
3504
0
}
3505
3506
/* Set the sizes of the dynamic sections.  */
3507
3508
static bool
3509
elf_cris_late_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3510
           struct bfd_link_info *info)
3511
0
{
3512
0
  struct elf_cris_link_hash_table * htab;
3513
0
  bfd *dynobj;
3514
0
  asection *s;
3515
0
  bool relocs;
3516
3517
0
  htab = elf_cris_hash_table (info);
3518
0
  if (htab == NULL)
3519
0
    return false;
3520
3521
0
  dynobj = htab->root.dynobj;
3522
0
  if (dynobj == NULL)
3523
0
    return true;
3524
3525
0
  if (htab->root.dynamic_sections_created)
3526
0
    {
3527
      /* Set the contents of the .interp section to the interpreter.  */
3528
0
      if (bfd_link_executable (info) && !info->nointerp)
3529
0
  {
3530
0
    s = bfd_get_linker_section (dynobj, ".interp");
3531
0
    BFD_ASSERT (s != NULL);
3532
0
    s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3533
0
    s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3534
0
  }
3535
0
    }
3536
0
  else
3537
0
    {
3538
      /* Adjust all expected GOTPLT uses to use a GOT entry instead.  */
3539
0
      elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got,
3540
0
           info);
3541
3542
      /* We may have created entries in the .rela.got section.
3543
   However, if we are not creating the dynamic sections, we will
3544
   not actually use these entries.  Reset the size of .rela.got,
3545
   which will cause it to get stripped from the output file
3546
   below.  */
3547
0
      s = htab->root.srelgot;
3548
0
      if (s != NULL)
3549
0
  s->size = 0;
3550
0
    }
3551
3552
  /* If this is a -Bsymbolic shared link, then we need to discard all PC
3553
     relative relocs against symbols defined in a regular object.  We
3554
     allocated space for them in the check_relocs routine, but we will not
3555
     fill them in in the relocate_section routine.  We also discard space
3556
     for relocs that have become for local symbols due to symbol
3557
     visibility changes.  For programs, we discard space for relocs for
3558
     symbols not referenced by any dynamic object.  */
3559
0
  if (bfd_link_pic (info))
3560
0
    elf_cris_link_hash_traverse (htab,
3561
0
         elf_cris_discard_excess_dso_dynamics,
3562
0
         info);
3563
0
  else
3564
0
    elf_cris_link_hash_traverse (htab,
3565
0
         elf_cris_discard_excess_program_dynamics,
3566
0
         info);
3567
3568
  /* The check_relocs and adjust_dynamic_symbol entry points have
3569
     determined the sizes of the various dynamic sections.  Allocate
3570
     memory for them.  */
3571
0
  relocs = false;
3572
0
  for (s = dynobj->sections; s != NULL; s = s->next)
3573
0
    {
3574
0
      const char *name;
3575
3576
0
      if ((s->flags & SEC_LINKER_CREATED) == 0)
3577
0
  continue;
3578
3579
      /* It's OK to base decisions on the section name, because none
3580
   of the dynobj section names depend upon the input files.  */
3581
0
      name = bfd_section_name (s);
3582
3583
0
      if (strcmp (name, ".plt") == 0)
3584
0
  {
3585
0
    ;
3586
0
  }
3587
0
      else if (strcmp (name, ".got.plt") == 0)
3588
0
  {
3589
    /* The .got.plt contains the .got header as well as the
3590
       actual .got.plt contents.  The .got header may contain a
3591
       R_CRIS_DTPMOD entry at index 3.  */
3592
0
    s->size += htab->dtpmod_refcount != 0
3593
0
      ? 8 : 0;
3594
0
  }
3595
0
      else if (startswith (name, ".rela"))
3596
0
  {
3597
0
    if (strcmp (name, ".rela.got") == 0
3598
0
        && htab->dtpmod_refcount != 0
3599
0
        && bfd_link_pic (info))
3600
0
      s->size += sizeof (Elf32_External_Rela);
3601
3602
0
    if (s->size != 0)
3603
0
      {
3604
        /* Remember whether there are any reloc sections other
3605
     than .rela.plt.  */
3606
0
        if (strcmp (name, ".rela.plt") != 0)
3607
0
      relocs = true;
3608
3609
        /* We use the reloc_count field as a counter if we need
3610
     to copy relocs into the output file.  */
3611
0
        s->reloc_count = 0;
3612
0
      }
3613
0
  }
3614
0
      else if (! startswith (name, ".got")
3615
0
         && strcmp (name, ".dynbss") != 0
3616
0
         && s != htab->root.sdynrelro)
3617
0
  {
3618
    /* It's not one of our sections, so don't allocate space.  */
3619
0
    continue;
3620
0
  }
3621
3622
0
      if (s->size == 0)
3623
0
  {
3624
    /* If we don't need this section, strip it from the
3625
       output file.  This is mostly to handle .rela.bss and
3626
       .rela.plt.  We must create both sections in
3627
       create_dynamic_sections, because they must be created
3628
       before the linker maps input sections to output
3629
       sections.  The linker does that before
3630
       adjust_dynamic_symbol is called, and it is that
3631
       function which decides whether anything needs to go
3632
       into these sections.  */
3633
0
    s->flags |= SEC_EXCLUDE;
3634
0
    continue;
3635
0
  }
3636
3637
0
      if ((s->flags & SEC_HAS_CONTENTS) == 0)
3638
0
  continue;
3639
3640
      /* Allocate memory for the section contents. We use bfd_zalloc here
3641
   in case unused entries are not reclaimed before the section's
3642
   contents are written out.  This should not happen, but this way
3643
   if it does, we will not write out garbage.  For reloc sections,
3644
   this will make entries have the type R_CRIS_NONE.  */
3645
0
      s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3646
0
      if (s->contents == NULL)
3647
0
  return false;
3648
0
    }
3649
3650
0
  return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
3651
0
}
3652
3653
/* This function is called via elf_cris_link_hash_traverse if we are
3654
   creating a shared object.  In the -Bsymbolic case, it discards the
3655
   space allocated to copy PC relative relocs against symbols which
3656
   are defined in regular objects.  For the normal non-symbolic case,
3657
   we also discard space for relocs that have become local due to
3658
   symbol visibility changes.  We allocated space for them in the
3659
   check_relocs routine, but we won't fill them in in the
3660
   relocate_section routine.  */
3661
3662
static bool
3663
elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *h,
3664
              void * inf)
3665
0
{
3666
0
  struct elf_cris_pcrel_relocs_copied *s;
3667
0
  struct bfd_link_info *info = (struct bfd_link_info *) inf;
3668
3669
  /* If a symbol has been forced local or we have found a regular
3670
     definition for the symbolic link case, then we won't be needing
3671
     any relocs.  */
3672
0
  if (h->root.def_regular
3673
0
      && (h->root.forced_local
3674
0
    || SYMBOLIC_BIND (info, &h->root)))
3675
0
    {
3676
0
      for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3677
0
  {
3678
0
    asection *sreloc
3679
0
      = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info)
3680
0
              ->dynobj,
3681
0
              s->section,
3682
              /*rela?*/ true);
3683
0
    sreloc->size -= s->count * sizeof (Elf32_External_Rela);
3684
0
  }
3685
0
      return true;
3686
0
    }
3687
3688
  /* If we have accounted for PC-relative relocs for read-only
3689
     sections, now is the time to warn for them.  We can't do it in
3690
     cris_elf_check_relocs, because we don't know the status of all
3691
     symbols at that time (and it's common to force symbols local
3692
     late).  */
3693
3694
0
  for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3695
0
    if ((s->section->flags & SEC_READONLY) != 0)
3696
0
      {
3697
  /* FIXME: How do we make this optionally a warning only?  */
3698
0
  _bfd_error_handler
3699
    /* xgettext:c-format */
3700
0
    (_("%pB, section `%pA', to symbol `%s':"
3701
0
       " relocation %s should not be used"
3702
0
       " in a shared object; recompile with -fPIC"),
3703
0
     s->section->owner,
3704
0
     s->section,
3705
0
     h->root.root.root.string,
3706
0
     cris_elf_howto_table[s->r_type].name);
3707
3708
0
  info->flags |= DF_TEXTREL;
3709
0
      }
3710
3711
0
  return true;
3712
0
}
3713
3714
/* This function is called via elf_cris_link_hash_traverse if we are *not*
3715
   creating a shared object.  We discard space for relocs for symbols put
3716
   in the .got, but which we found we do not have to resolve at run-time.  */
3717
3718
static bool
3719
elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *h,
3720
            void * inf)
3721
0
{
3722
0
  struct bfd_link_info *info = (struct bfd_link_info *) inf;
3723
3724
  /* If we're not creating a shared library and have a symbol which is
3725
     referred to by .got references, but the symbol is defined locally,
3726
     (or rather, not defined by a DSO) then lose the reloc for the .got
3727
     (don't allocate room for it).  Likewise for relocs for something
3728
     for which we create a PLT.  */
3729
0
  if (!h->root.def_dynamic
3730
0
      || h->root.plt.refcount > 0)
3731
0
    {
3732
0
      if (h->reg_got_refcount > 0
3733
    /* The size of this section is only valid and in sync with the
3734
       various reference counts if we do dynamic; don't decrement it
3735
       otherwise.  */
3736
0
    && elf_hash_table (info)->dynamic_sections_created)
3737
0
  {
3738
0
    bfd *dynobj = elf_hash_table (info)->dynobj;
3739
0
    asection *srelgot = elf_hash_table (info)->srelgot;
3740
3741
0
    BFD_ASSERT (dynobj != NULL);
3742
0
    BFD_ASSERT (srelgot != NULL);
3743
3744
0
    srelgot->size -= sizeof (Elf32_External_Rela);
3745
0
  }
3746
3747
      /* If the locally-defined symbol isn't used by a DSO, then we don't
3748
   have to export it as a dynamic symbol.  This was already done for
3749
   functions; doing this for all symbols would presumably not
3750
   introduce new problems.  Of course we don't do this if we're
3751
   exporting all dynamic symbols, or all data symbols, regardless of
3752
   them being referenced or not.  */
3753
0
      if (! (info->export_dynamic
3754
0
       || (h->root.type != STT_FUNC && info->dynamic_data))
3755
0
    && h->root.dynindx != -1
3756
0
    && !h->root.dynamic
3757
0
    && !h->root.def_dynamic
3758
0
    && !h->root.ref_dynamic)
3759
0
  {
3760
0
    h->root.dynindx = -1;
3761
0
    _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3762
0
          h->root.dynstr_index);
3763
0
  }
3764
0
    }
3765
3766
0
  return true;
3767
0
}
3768
3769
/* Reject a file depending on presence and expectation of prefixed
3770
   underscores on symbols.  */
3771
3772
static bool
3773
cris_elf_object_p (bfd *abfd)
3774
5.66k
{
3775
5.66k
  if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3776
2.21k
    return false;
3777
3778
3.45k
  if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3779
1.95k
    return (bfd_get_symbol_leading_char (abfd) == '_');
3780
1.49k
  else
3781
1.49k
    return (bfd_get_symbol_leading_char (abfd) == 0);
3782
3.45k
}
3783
3784
/* Mark presence or absence of leading underscore.  Set machine type
3785
   flags from mach type.  */
3786
3787
static bool
3788
cris_elf_final_write_processing (bfd *abfd)
3789
0
{
3790
0
  unsigned long e_flags = elf_elfheader (abfd)->e_flags;
3791
3792
0
  e_flags &= ~EF_CRIS_UNDERSCORE;
3793
0
  if (bfd_get_symbol_leading_char (abfd) == '_')
3794
0
    e_flags |= EF_CRIS_UNDERSCORE;
3795
3796
0
  switch (bfd_get_mach (abfd))
3797
0
    {
3798
0
    case bfd_mach_cris_v0_v10:
3799
0
      e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
3800
0
      break;
3801
3802
0
    case bfd_mach_cris_v10_v32:
3803
0
      e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
3804
0
      break;
3805
3806
0
    case bfd_mach_cris_v32:
3807
0
      e_flags |= EF_CRIS_VARIANT_V32;
3808
0
      break;
3809
3810
0
    default:
3811
0
      _bfd_abort (__FILE__, __LINE__,
3812
0
      _("unexpected machine number"));
3813
0
    }
3814
3815
0
  elf_elfheader (abfd)->e_flags = e_flags;
3816
0
  return _bfd_elf_final_write_processing (abfd);
3817
0
}
3818
3819
/* Set the mach type from e_flags value.  */
3820
3821
static bool
3822
cris_elf_set_mach_from_flags (bfd *abfd,
3823
            unsigned long flags)
3824
5.66k
{
3825
5.66k
  switch (flags & EF_CRIS_VARIANT_MASK)
3826
5.66k
    {
3827
1.75k
    case EF_CRIS_VARIANT_ANY_V0_V10:
3828
1.75k
      bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
3829
1.75k
      break;
3830
3831
481
    case EF_CRIS_VARIANT_V32:
3832
481
      bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
3833
481
      break;
3834
3835
1.21k
    case EF_CRIS_VARIANT_COMMON_V10_V32:
3836
1.21k
      bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
3837
1.21k
      break;
3838
3839
2.21k
    default:
3840
      /* Since we don't recognize them, we obviously can't support them
3841
   with this code; we'd have to require that all future handling
3842
   would be optional.  */
3843
2.21k
      bfd_set_error (bfd_error_wrong_format);
3844
2.21k
      return false;
3845
5.66k
    }
3846
3847
3.45k
  return true;
3848
5.66k
}
3849
3850
/* Display the flags field.  */
3851
3852
static bool
3853
cris_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3854
4
{
3855
4
  FILE *file = (FILE *) ptr;
3856
3857
4
  BFD_ASSERT (abfd != NULL && ptr != NULL);
3858
3859
4
  _bfd_elf_print_private_bfd_data (abfd, ptr);
3860
3861
4
  fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
3862
3863
4
  if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
3864
3
    fprintf (file, _(" [symbols have a _ prefix]"));
3865
4
  if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3866
4
      == EF_CRIS_VARIANT_COMMON_V10_V32)
3867
1
    fprintf (file, _(" [v10 and v32]"));
3868
4
  if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3869
4
      == EF_CRIS_VARIANT_V32)
3870
1
    fprintf (file, _(" [v32]"));
3871
3872
4
  fputc ('\n', file);
3873
4
  return true;
3874
4
}
3875
3876
/* Don't mix files with and without a leading underscore.  */
3877
3878
static bool
3879
cris_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
3880
0
{
3881
0
  bfd *obfd = info->output_bfd;
3882
0
  int imach, omach;
3883
3884
0
  if (! _bfd_generic_verify_endian_match (ibfd, info))
3885
0
    return false;
3886
3887
0
  if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3888
0
      || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3889
0
    return true;
3890
3891
0
  imach = bfd_get_mach (ibfd);
3892
3893
0
  if (! elf_flags_init (obfd))
3894
0
    {
3895
      /* This happens when ld starts out with a 'blank' output file.  */
3896
0
      elf_flags_init (obfd) = true;
3897
3898
      /* We ignore the linker-set mach, and instead set it according to
3899
   the first input file.  This would also happen if we could
3900
   somehow filter out the OUTPUT_ARCH () setting from elf.sc.
3901
   This allows us to keep the same linker config across
3902
   cris(v0..v10) and crisv32.  The drawback is that we can't force
3903
   the output type, which might be a sane thing to do for a
3904
   v10+v32 compatibility object.  */
3905
0
      if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3906
0
  return false;
3907
0
    }
3908
3909
0
  if (bfd_get_symbol_leading_char (ibfd)
3910
0
      != bfd_get_symbol_leading_char (obfd))
3911
0
    {
3912
0
      _bfd_error_handler
3913
0
  (bfd_get_symbol_leading_char (ibfd) == '_'
3914
0
   ? _("%pB: uses _-prefixed symbols, but writing file with non-prefixed symbols")
3915
0
   : _("%pB: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
3916
0
   ibfd);
3917
0
      bfd_set_error (bfd_error_bad_value);
3918
0
      return false;
3919
0
    }
3920
3921
0
  omach = bfd_get_mach (obfd);
3922
3923
0
  if (imach != omach)
3924
0
    {
3925
      /* We can get an incompatible combination only if either is
3926
   bfd_mach_cris_v32, and the other one isn't compatible.  */
3927
0
      if ((imach == bfd_mach_cris_v32
3928
0
     && omach != bfd_mach_cris_v10_v32)
3929
0
    || (omach == bfd_mach_cris_v32
3930
0
        && imach != bfd_mach_cris_v10_v32))
3931
0
  {
3932
0
    _bfd_error_handler
3933
0
      ((imach == bfd_mach_cris_v32)
3934
0
       ? _("%pB contains CRIS v32 code, incompatible"
3935
0
     " with previous objects")
3936
0
       : _("%pB contains non-CRIS-v32 code, incompatible"
3937
0
     " with previous objects"),
3938
0
       ibfd);
3939
0
    bfd_set_error (bfd_error_bad_value);
3940
0
    return false;
3941
0
  }
3942
3943
      /* We don't have to check the case where the input is compatible
3944
   with v10 and v32, because the output is already known to be set
3945
   to the other (compatible) mach.  */
3946
0
      if (omach == bfd_mach_cris_v10_v32
3947
0
    && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3948
0
  return false;
3949
0
    }
3950
3951
0
  return true;
3952
0
}
3953
3954
/* Do side-effects of e_flags copying to obfd.  */
3955
3956
static bool
3957
cris_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
3958
0
{
3959
0
  if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3960
0
      || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3961
0
    return true;
3962
3963
  /* Call the base function.  */
3964
0
  if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
3965
0
    return false;
3966
3967
  /* Do what we really came here for.  */
3968
0
  return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
3969
0
}
3970
3971
static enum elf_reloc_type_class
3972
elf_cris_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3973
         const asection *rel_sec ATTRIBUTE_UNUSED,
3974
         const Elf_Internal_Rela *rela)
3975
0
{
3976
0
  enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
3977
0
  switch (r_type)
3978
0
    {
3979
0
    case R_CRIS_RELATIVE:
3980
0
      return reloc_class_relative;
3981
0
    case R_CRIS_JUMP_SLOT:
3982
0
      return reloc_class_plt;
3983
0
    case R_CRIS_COPY:
3984
0
      return reloc_class_copy;
3985
0
    default:
3986
0
      return reloc_class_normal;
3987
0
    }
3988
0
}
3989
3990
/* The elf_backend_got_elt_size worker.  For one symbol, we can have up to
3991
   two GOT entries from three types with two different sizes.  We handle
3992
   it as a single entry, so we can use the regular offset-calculation
3993
   machinery.  */
3994
3995
static bfd_vma
3996
elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
3997
           struct bfd_link_info *info ATTRIBUTE_UNUSED,
3998
           struct elf_link_hash_entry *hr,
3999
           bfd *ibfd,
4000
           unsigned long symndx)
4001
0
{
4002
0
  struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4003
0
  bfd_vma eltsiz = 0;
4004
4005
  /* We may have one regular GOT entry or up to two TLS GOT
4006
     entries.  */
4007
0
  if (h == NULL)
4008
0
    {
4009
0
      Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4010
0
      bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4011
4012
0
      BFD_ASSERT (local_got_refcounts != NULL);
4013
4014
0
      if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4015
0
  {
4016
    /* We can't have a variable referred to both as a regular
4017
       variable and through TLS relocs.  */
4018
0
    BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4019
0
          && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4020
0
    return 4;
4021
0
  }
4022
4023
0
      if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4024
0
  eltsiz += 8;
4025
4026
0
      if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4027
0
  eltsiz += 4;
4028
0
    }
4029
0
  else
4030
0
    {
4031
0
      struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4032
0
      if (hh->reg_got_refcount > 0)
4033
0
  {
4034
    /* The actual error-on-input is emitted elsewhere.  */
4035
0
    BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4036
0
    return 4;
4037
0
  }
4038
4039
0
      if (hh->dtp_refcount > 0)
4040
0
  eltsiz += 8;
4041
4042
0
      if (hh->tprel_refcount > 0)
4043
0
  eltsiz += 4;
4044
0
    }
4045
4046
  /* We're only called when h->got.refcount is non-zero, so we must
4047
     have a non-zero size.  */
4048
0
  BFD_ASSERT (eltsiz != 0);
4049
0
  return eltsiz;
4050
0
}
4051

4052
#define ELF_ARCH    bfd_arch_cris
4053
#define ELF_TARGET_ID   CRIS_ELF_DATA
4054
#define ELF_MACHINE_CODE  EM_CRIS
4055
#define ELF_MAXPAGESIZE   0x2000
4056
4057
#define TARGET_LITTLE_SYM cris_elf32_vec
4058
#define TARGET_LITTLE_NAME  "elf32-cris"
4059
#define elf_symbol_leading_char 0
4060
4061
#define elf_info_to_howto_rel     NULL
4062
#define elf_info_to_howto     cris_info_to_howto_rela
4063
#define elf_backend_relocate_section    cris_elf_relocate_section
4064
#define elf_backend_gc_mark_hook    cris_elf_gc_mark_hook
4065
#define elf_backend_plt_sym_val     cris_elf_plt_sym_val
4066
#define elf_backend_check_relocs    cris_elf_check_relocs
4067
#define elf_backend_grok_prstatus   cris_elf_grok_prstatus
4068
#define elf_backend_grok_psinfo     cris_elf_grok_psinfo
4069
4070
#define elf_backend_can_gc_sections   1
4071
#define elf_backend_can_refcount    1
4072
4073
#define elf_backend_object_p      cris_elf_object_p
4074
#define elf_backend_final_write_processing \
4075
  cris_elf_final_write_processing
4076
#define bfd_elf32_bfd_print_private_bfd_data \
4077
  cris_elf_print_private_bfd_data
4078
#define bfd_elf32_bfd_merge_private_bfd_data \
4079
  cris_elf_merge_private_bfd_data
4080
#define bfd_elf32_bfd_copy_private_bfd_data \
4081
  cris_elf_copy_private_bfd_data
4082
4083
#define bfd_elf32_bfd_reloc_type_lookup   cris_reloc_type_lookup
4084
#define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4085
4086
#define bfd_elf32_bfd_link_hash_table_create \
4087
  elf_cris_link_hash_table_create
4088
#define elf_backend_adjust_dynamic_symbol \
4089
  elf_cris_adjust_dynamic_symbol
4090
#define elf_backend_copy_indirect_symbol \
4091
  elf_cris_copy_indirect_symbol
4092
#define elf_backend_late_size_sections \
4093
  elf_cris_late_size_sections
4094
#define elf_backend_init_index_section    _bfd_elf_init_1_index_section
4095
#define elf_backend_finish_dynamic_symbol \
4096
  elf_cris_finish_dynamic_symbol
4097
#define elf_backend_finish_dynamic_sections \
4098
  elf_cris_finish_dynamic_sections
4099
#define elf_backend_create_dynamic_sections \
4100
  _bfd_elf_create_dynamic_sections
4101
#define bfd_elf32_bfd_final_link \
4102
  bfd_elf_gc_common_final_link
4103
#define elf_backend_hide_symbol     elf_cris_hide_symbol
4104
#define elf_backend_reloc_type_class    elf_cris_reloc_type_class
4105
4106
#define elf_backend_want_got_plt  1
4107
#define elf_backend_plt_readonly  1
4108
#define elf_backend_want_plt_sym  0
4109
#define elf_backend_got_header_size 12
4110
#define elf_backend_got_elt_size elf_cris_got_elt_size
4111
#define elf_backend_dtrel_excludes_plt  1
4112
#define elf_backend_want_dynrelro 1
4113
4114
#define elf_backend_default_execstack 0
4115
4116
/* Later, we my want to optimize RELA entries into REL entries for dynamic
4117
   linking and libraries (if it's a win of any significance).  Until then,
4118
   take the easy route.  */
4119
#define elf_backend_may_use_rel_p 0
4120
#define elf_backend_may_use_rela_p 1
4121
#define elf_backend_rela_normal   1
4122
4123
#define elf_backend_linux_prpsinfo32_ugid16 true
4124
4125
#include "elf32-target.h"
4126
4127
#undef TARGET_LITTLE_SYM
4128
#undef TARGET_LITTLE_NAME
4129
#undef elf_symbol_leading_char
4130
4131
#define TARGET_LITTLE_SYM cris_elf32_us_vec
4132
#define TARGET_LITTLE_NAME "elf32-us-cris"
4133
#define elf_symbol_leading_char '_'
4134
#undef elf32_bed
4135
#define elf32_bed elf32_us_cris_bed
4136
4137
#include "elf32-target.h"