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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.18.50/] [bfd/] [elf32-sh.c] - Blame information for rev 297

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1 38 julius
/* Renesas / SuperH SH specific support for 32-bit ELF
2
   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3
   2006, 2007, 2008 Free Software Foundation, Inc.
4
   Contributed by Ian Lance Taylor, Cygnus Support.
5
 
6
   This file is part of BFD, the Binary File Descriptor library.
7
 
8
   This program is free software; you can redistribute it and/or modify
9
   it under the terms of the GNU General Public License as published by
10
   the Free Software Foundation; either version 3 of the License, or
11
   (at your option) any later version.
12
 
13
   This program is distributed in the hope that it will be useful,
14
   but WITHOUT ANY WARRANTY; without even the implied warranty of
15
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16
   GNU General Public License for more details.
17
 
18
   You should have received a copy of the GNU General Public License
19
   along with this program; if not, write to the Free Software
20
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21
   MA 02110-1301, USA.  */
22
 
23
#include "sysdep.h"
24
#include "bfd.h"
25
#include "bfdlink.h"
26
#include "libbfd.h"
27
#include "elf-bfd.h"
28
#include "elf-vxworks.h"
29
#include "elf/sh.h"
30
#include "libiberty.h"
31
#include "../opcodes/sh-opc.h"
32
 
33
static bfd_reloc_status_type sh_elf_reloc
34
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
35
static bfd_reloc_status_type sh_elf_ignore_reloc
36
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
37
static bfd_boolean sh_elf_relax_delete_bytes
38
  (bfd *, asection *, bfd_vma, int);
39
static bfd_boolean sh_elf_align_loads
40
  (bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_boolean *);
41
#ifndef SH64_ELF
42
static bfd_boolean sh_elf_swap_insns
43
  (bfd *, asection *, void *, bfd_byte *, bfd_vma);
44
#endif
45
static int sh_elf_optimized_tls_reloc
46
  (struct bfd_link_info *, int, int);
47
static bfd_vma dtpoff_base
48
  (struct bfd_link_info *);
49
static bfd_vma tpoff
50
  (struct bfd_link_info *, bfd_vma);
51
 
52
/* The name of the dynamic interpreter.  This is put in the .interp
53
   section.  */
54
 
55
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
56
 
57
#define MINUS_ONE ((bfd_vma) 0 - 1)
58
 
59
#define SH_PARTIAL32 TRUE
60
#define SH_SRC_MASK32 0xffffffff
61
#define SH_ELF_RELOC sh_elf_reloc
62
static reloc_howto_type sh_elf_howto_table[] =
63
{
64
#include "elf32-sh-relocs.h"
65
};
66
 
67
#define SH_PARTIAL32 FALSE
68
#define SH_SRC_MASK32 0
69
#define SH_ELF_RELOC bfd_elf_generic_reloc
70
static reloc_howto_type sh_vxworks_howto_table[] =
71
{
72
#include "elf32-sh-relocs.h"
73
};
74
 
75
/* Return true if OUTPUT_BFD is a VxWorks object.  */
76
 
77
static bfd_boolean
78
vxworks_object_p (bfd *abfd ATTRIBUTE_UNUSED)
79
{
80
#if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED
81
  extern const bfd_target bfd_elf32_shlvxworks_vec;
82
  extern const bfd_target bfd_elf32_shvxworks_vec;
83
 
84
  return (abfd->xvec == &bfd_elf32_shlvxworks_vec
85
          || abfd->xvec == &bfd_elf32_shvxworks_vec);
86
#else
87
  return FALSE;
88
#endif
89
}
90
 
91
/* Return the howto table for ABFD.  */
92
 
93
static reloc_howto_type *
94
get_howto_table (bfd *abfd)
95
{
96
  if (vxworks_object_p (abfd))
97
    return sh_vxworks_howto_table;
98
  return sh_elf_howto_table;
99
}
100
 
101
static bfd_reloc_status_type
102
sh_elf_reloc_loop (int r_type ATTRIBUTE_UNUSED, bfd *input_bfd,
103
                   asection *input_section, bfd_byte *contents,
104
                   bfd_vma addr, asection *symbol_section,
105
                   bfd_vma start, bfd_vma end)
106
{
107
  static bfd_vma last_addr;
108
  static asection *last_symbol_section;
109
  bfd_byte *start_ptr, *ptr, *last_ptr;
110
  int diff, cum_diff;
111
  bfd_signed_vma x;
112
  int insn;
113
 
114
  /* Sanity check the address.  */
115
  if (addr > bfd_get_section_limit (input_bfd, input_section))
116
    return bfd_reloc_outofrange;
117
 
118
  /* We require the start and end relocations to be processed consecutively -
119
     although we allow then to be processed forwards or backwards.  */
120
  if (! last_addr)
121
    {
122
      last_addr = addr;
123
      last_symbol_section = symbol_section;
124
      return bfd_reloc_ok;
125
    }
126
  if (last_addr != addr)
127
    abort ();
128
  last_addr = 0;
129
 
130
  if (! symbol_section || last_symbol_section != symbol_section || end < start)
131
    return bfd_reloc_outofrange;
132
 
133
  /* Get the symbol_section contents.  */
134
  if (symbol_section != input_section)
135
    {
136
      if (elf_section_data (symbol_section)->this_hdr.contents != NULL)
137
        contents = elf_section_data (symbol_section)->this_hdr.contents;
138
      else
139
        {
140
          if (!bfd_malloc_and_get_section (input_bfd, symbol_section,
141
                                           &contents))
142
            {
143
              if (contents != NULL)
144
                free (contents);
145
              return bfd_reloc_outofrange;
146
            }
147
        }
148
    }
149
#define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800)
150
  start_ptr = contents + start;
151
  for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;)
152
    {
153
      for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);)
154
        ptr -= 2;
155
      ptr += 2;
156
      diff = (last_ptr - ptr) >> 1;
157
      cum_diff += diff & 1;
158
      cum_diff += diff;
159
    }
160
  /* Calculate the start / end values to load into rs / re minus four -
161
     so that will cancel out the four we would otherwise have to add to
162
     addr to get the value to subtract in order to get relative addressing.  */
163
  if (cum_diff >= 0)
164
    {
165
      start -= 4;
166
      end = (ptr + cum_diff * 2) - contents;
167
    }
168
  else
169
    {
170
      bfd_vma start0 = start - 4;
171
 
172
      while (start0 && IS_PPI (contents + start0))
173
        start0 -= 2;
174
      start0 = start - 2 - ((start - start0) & 2);
175
      start = start0 - cum_diff - 2;
176
      end = start0;
177
    }
178
 
179
  if (contents != NULL
180
      && elf_section_data (symbol_section)->this_hdr.contents != contents)
181
    free (contents);
182
 
183
  insn = bfd_get_16 (input_bfd, contents + addr);
184
 
185
  x = (insn & 0x200 ? end : start) - addr;
186
  if (input_section != symbol_section)
187
    x += ((symbol_section->output_section->vma + symbol_section->output_offset)
188
          - (input_section->output_section->vma
189
             + input_section->output_offset));
190
  x >>= 1;
191
  if (x < -128 || x > 127)
192
    return bfd_reloc_overflow;
193
 
194
  x = (insn & ~0xff) | (x & 0xff);
195
  bfd_put_16 (input_bfd, (bfd_vma) x, contents + addr);
196
 
197
  return bfd_reloc_ok;
198
}
199
 
200
/* This function is used for normal relocs.  This used to be like the COFF
201
   function, and is almost certainly incorrect for other ELF targets.  */
202
 
203
static bfd_reloc_status_type
204
sh_elf_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in,
205
              void *data, asection *input_section, bfd *output_bfd,
206
              char **error_message ATTRIBUTE_UNUSED)
207
{
208
  unsigned long insn;
209
  bfd_vma sym_value;
210
  enum elf_sh_reloc_type r_type;
211
  bfd_vma addr = reloc_entry->address;
212
  bfd_byte *hit_data = addr + (bfd_byte *) data;
213
 
214
  r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type;
215
 
216
  if (output_bfd != NULL)
217
    {
218
      /* Partial linking--do nothing.  */
219
      reloc_entry->address += input_section->output_offset;
220
      return bfd_reloc_ok;
221
    }
222
 
223
  /* Almost all relocs have to do with relaxing.  If any work must be
224
     done for them, it has been done in sh_relax_section.  */
225
  if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0)
226
    return bfd_reloc_ok;
227
 
228
  if (symbol_in != NULL
229
      && bfd_is_und_section (symbol_in->section))
230
    return bfd_reloc_undefined;
231
 
232
  if (bfd_is_com_section (symbol_in->section))
233
    sym_value = 0;
234
  else
235
    sym_value = (symbol_in->value +
236
                 symbol_in->section->output_section->vma +
237
                 symbol_in->section->output_offset);
238
 
239
  switch (r_type)
240
    {
241
    case R_SH_DIR32:
242
      insn = bfd_get_32 (abfd, hit_data);
243
      insn += sym_value + reloc_entry->addend;
244
      bfd_put_32 (abfd, (bfd_vma) insn, hit_data);
245
      break;
246
    case R_SH_IND12W:
247
      insn = bfd_get_16 (abfd, hit_data);
248
      sym_value += reloc_entry->addend;
249
      sym_value -= (input_section->output_section->vma
250
                    + input_section->output_offset
251
                    + addr
252
                    + 4);
253
      sym_value += (insn & 0xfff) << 1;
254
      if (insn & 0x800)
255
        sym_value -= 0x1000;
256
      insn = (insn & 0xf000) | (sym_value & 0xfff);
257
      bfd_put_16 (abfd, (bfd_vma) insn, hit_data);
258
      if (sym_value < (bfd_vma) -0x1000 || sym_value >= 0x1000)
259
        return bfd_reloc_overflow;
260
      break;
261
    default:
262
      abort ();
263
      break;
264
    }
265
 
266
  return bfd_reloc_ok;
267
}
268
 
269
/* This function is used for relocs which are only used for relaxing,
270
   which the linker should otherwise ignore.  */
271
 
272
static bfd_reloc_status_type
273
sh_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
274
                     asymbol *symbol ATTRIBUTE_UNUSED,
275
                     void *data ATTRIBUTE_UNUSED, asection *input_section,
276
                     bfd *output_bfd,
277
                     char **error_message ATTRIBUTE_UNUSED)
278
{
279
  if (output_bfd != NULL)
280
    reloc_entry->address += input_section->output_offset;
281
  return bfd_reloc_ok;
282
}
283
 
284
/* This structure is used to map BFD reloc codes to SH ELF relocs.  */
285
 
286
struct elf_reloc_map
287
{
288
  bfd_reloc_code_real_type bfd_reloc_val;
289
  unsigned char elf_reloc_val;
290
};
291
 
292
/* An array mapping BFD reloc codes to SH ELF relocs.  */
293
 
294
static const struct elf_reloc_map sh_reloc_map[] =
295
{
296
  { BFD_RELOC_NONE, R_SH_NONE },
297
  { BFD_RELOC_32, R_SH_DIR32 },
298
  { BFD_RELOC_16, R_SH_DIR16 },
299
  { BFD_RELOC_8, R_SH_DIR8 },
300
  { BFD_RELOC_CTOR, R_SH_DIR32 },
301
  { BFD_RELOC_32_PCREL, R_SH_REL32 },
302
  { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN },
303
  { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W },
304
  { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ },
305
  { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL },
306
  { BFD_RELOC_8_PCREL, R_SH_SWITCH8 },
307
  { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 },
308
  { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 },
309
  { BFD_RELOC_SH_USES, R_SH_USES },
310
  { BFD_RELOC_SH_COUNT, R_SH_COUNT },
311
  { BFD_RELOC_SH_ALIGN, R_SH_ALIGN },
312
  { BFD_RELOC_SH_CODE, R_SH_CODE },
313
  { BFD_RELOC_SH_DATA, R_SH_DATA },
314
  { BFD_RELOC_SH_LABEL, R_SH_LABEL },
315
  { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT },
316
  { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY },
317
  { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START },
318
  { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END },
319
  { BFD_RELOC_SH_TLS_GD_32, R_SH_TLS_GD_32 },
320
  { BFD_RELOC_SH_TLS_LD_32, R_SH_TLS_LD_32 },
321
  { BFD_RELOC_SH_TLS_LDO_32, R_SH_TLS_LDO_32 },
322
  { BFD_RELOC_SH_TLS_IE_32, R_SH_TLS_IE_32 },
323
  { BFD_RELOC_SH_TLS_LE_32, R_SH_TLS_LE_32 },
324
  { BFD_RELOC_SH_TLS_DTPMOD32, R_SH_TLS_DTPMOD32 },
325
  { BFD_RELOC_SH_TLS_DTPOFF32, R_SH_TLS_DTPOFF32 },
326
  { BFD_RELOC_SH_TLS_TPOFF32, R_SH_TLS_TPOFF32 },
327
  { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 },
328
  { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 },
329
  { BFD_RELOC_SH_COPY, R_SH_COPY },
330
  { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT },
331
  { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT },
332
  { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE },
333
  { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF },
334
  { BFD_RELOC_SH_GOTPC, R_SH_GOTPC },
335
  { BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 },
336
#ifdef INCLUDE_SHMEDIA
337
  { BFD_RELOC_SH_GOT_LOW16, R_SH_GOT_LOW16 },
338
  { BFD_RELOC_SH_GOT_MEDLOW16, R_SH_GOT_MEDLOW16 },
339
  { BFD_RELOC_SH_GOT_MEDHI16, R_SH_GOT_MEDHI16 },
340
  { BFD_RELOC_SH_GOT_HI16, R_SH_GOT_HI16 },
341
  { BFD_RELOC_SH_GOTPLT_LOW16, R_SH_GOTPLT_LOW16 },
342
  { BFD_RELOC_SH_GOTPLT_MEDLOW16, R_SH_GOTPLT_MEDLOW16 },
343
  { BFD_RELOC_SH_GOTPLT_MEDHI16, R_SH_GOTPLT_MEDHI16 },
344
  { BFD_RELOC_SH_GOTPLT_HI16, R_SH_GOTPLT_HI16 },
345
  { BFD_RELOC_SH_PLT_LOW16, R_SH_PLT_LOW16 },
346
  { BFD_RELOC_SH_PLT_MEDLOW16, R_SH_PLT_MEDLOW16 },
347
  { BFD_RELOC_SH_PLT_MEDHI16, R_SH_PLT_MEDHI16 },
348
  { BFD_RELOC_SH_PLT_HI16, R_SH_PLT_HI16 },
349
  { BFD_RELOC_SH_GOTOFF_LOW16, R_SH_GOTOFF_LOW16 },
350
  { BFD_RELOC_SH_GOTOFF_MEDLOW16, R_SH_GOTOFF_MEDLOW16 },
351
  { BFD_RELOC_SH_GOTOFF_MEDHI16, R_SH_GOTOFF_MEDHI16 },
352
  { BFD_RELOC_SH_GOTOFF_HI16, R_SH_GOTOFF_HI16 },
353
  { BFD_RELOC_SH_GOTPC_LOW16, R_SH_GOTPC_LOW16 },
354
  { BFD_RELOC_SH_GOTPC_MEDLOW16, R_SH_GOTPC_MEDLOW16 },
355
  { BFD_RELOC_SH_GOTPC_MEDHI16, R_SH_GOTPC_MEDHI16 },
356
  { BFD_RELOC_SH_GOTPC_HI16, R_SH_GOTPC_HI16 },
357
  { BFD_RELOC_SH_COPY64, R_SH_COPY64 },
358
  { BFD_RELOC_SH_GLOB_DAT64, R_SH_GLOB_DAT64 },
359
  { BFD_RELOC_SH_JMP_SLOT64, R_SH_JMP_SLOT64 },
360
  { BFD_RELOC_SH_RELATIVE64, R_SH_RELATIVE64 },
361
  { BFD_RELOC_SH_GOT10BY4, R_SH_GOT10BY4 },
362
  { BFD_RELOC_SH_GOT10BY8, R_SH_GOT10BY8 },
363
  { BFD_RELOC_SH_GOTPLT10BY4, R_SH_GOTPLT10BY4 },
364
  { BFD_RELOC_SH_GOTPLT10BY8, R_SH_GOTPLT10BY8 },
365
  { BFD_RELOC_SH_PT_16, R_SH_PT_16 },
366
  { BFD_RELOC_SH_SHMEDIA_CODE, R_SH_SHMEDIA_CODE },
367
  { BFD_RELOC_SH_IMMU5, R_SH_DIR5U },
368
  { BFD_RELOC_SH_IMMS6, R_SH_DIR6S },
369
  { BFD_RELOC_SH_IMMU6, R_SH_DIR6U },
370
  { BFD_RELOC_SH_IMMS10, R_SH_DIR10S },
371
  { BFD_RELOC_SH_IMMS10BY2, R_SH_DIR10SW },
372
  { BFD_RELOC_SH_IMMS10BY4, R_SH_DIR10SL },
373
  { BFD_RELOC_SH_IMMS10BY8, R_SH_DIR10SQ },
374
  { BFD_RELOC_SH_IMMS16, R_SH_IMMS16 },
375
  { BFD_RELOC_SH_IMMU16, R_SH_IMMU16 },
376
  { BFD_RELOC_SH_IMM_LOW16, R_SH_IMM_LOW16 },
377
  { BFD_RELOC_SH_IMM_LOW16_PCREL, R_SH_IMM_LOW16_PCREL },
378
  { BFD_RELOC_SH_IMM_MEDLOW16, R_SH_IMM_MEDLOW16 },
379
  { BFD_RELOC_SH_IMM_MEDLOW16_PCREL, R_SH_IMM_MEDLOW16_PCREL },
380
  { BFD_RELOC_SH_IMM_MEDHI16, R_SH_IMM_MEDHI16 },
381
  { BFD_RELOC_SH_IMM_MEDHI16_PCREL, R_SH_IMM_MEDHI16_PCREL },
382
  { BFD_RELOC_SH_IMM_HI16, R_SH_IMM_HI16 },
383
  { BFD_RELOC_SH_IMM_HI16_PCREL, R_SH_IMM_HI16_PCREL },
384
  { BFD_RELOC_64, R_SH_64 },
385
  { BFD_RELOC_64_PCREL, R_SH_64_PCREL },
386
#endif /* not INCLUDE_SHMEDIA */
387
};
388
 
389
/* Given a BFD reloc code, return the howto structure for the
390
   corresponding SH ELF reloc.  */
391
 
392
static reloc_howto_type *
393
sh_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
394
{
395
  unsigned int i;
396
 
397
  for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++)
398
    {
399
      if (sh_reloc_map[i].bfd_reloc_val == code)
400
        return get_howto_table (abfd) + (int) sh_reloc_map[i].elf_reloc_val;
401
    }
402
 
403
  return NULL;
404
}
405
 
406
static reloc_howto_type *
407
sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name)
408
{
409
  unsigned int i;
410
 
411
  if (vxworks_object_p (abfd))
412
    {
413
      for (i = 0;
414
           i < (sizeof (sh_vxworks_howto_table)
415
                / sizeof (sh_vxworks_howto_table[0]));
416
           i++)
417
        if (sh_vxworks_howto_table[i].name != NULL
418
            && strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0)
419
          return &sh_vxworks_howto_table[i];
420
    }
421
  else
422
    {
423
      for (i = 0;
424
           i < (sizeof (sh_elf_howto_table)
425
                / sizeof (sh_elf_howto_table[0]));
426
           i++)
427
        if (sh_elf_howto_table[i].name != NULL
428
            && strcasecmp (sh_elf_howto_table[i].name, r_name) == 0)
429
          return &sh_elf_howto_table[i];
430
    }
431
 
432
  return NULL;
433
}
434
 
435
/* Given an ELF reloc, fill in the howto field of a relent.  */
436
 
437
static void
438
sh_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
439
{
440
  unsigned int r;
441
 
442
  r = ELF32_R_TYPE (dst->r_info);
443
 
444
  BFD_ASSERT (r < (unsigned int) R_SH_max);
445
  BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC || r > R_SH_LAST_INVALID_RELOC);
446
  BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_2 || r > R_SH_LAST_INVALID_RELOC_2);
447
  BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_3 || r > R_SH_LAST_INVALID_RELOC_3);
448
  BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_4 || r > R_SH_LAST_INVALID_RELOC_4);
449
  BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_5 || r > R_SH_LAST_INVALID_RELOC_5);
450
 
451
  cache_ptr->howto = get_howto_table (abfd) + r;
452
}
453
 
454
/* This function handles relaxing for SH ELF.  See the corresponding
455
   function in coff-sh.c for a description of what this does.  FIXME:
456
   There is a lot of duplication here between this code and the COFF
457
   specific code.  The format of relocs and symbols is wound deeply
458
   into this code, but it would still be better if the duplication
459
   could be eliminated somehow.  Note in particular that although both
460
   functions use symbols like R_SH_CODE, those symbols have different
461
   values; in coff-sh.c they come from include/coff/sh.h, whereas here
462
   they come from enum elf_sh_reloc_type in include/elf/sh.h.  */
463
 
464
static bfd_boolean
465
sh_elf_relax_section (bfd *abfd, asection *sec,
466
                      struct bfd_link_info *link_info, bfd_boolean *again)
467
{
468
  Elf_Internal_Shdr *symtab_hdr;
469
  Elf_Internal_Rela *internal_relocs;
470
  bfd_boolean have_code;
471
  Elf_Internal_Rela *irel, *irelend;
472
  bfd_byte *contents = NULL;
473
  Elf_Internal_Sym *isymbuf = NULL;
474
 
475
  *again = FALSE;
476
 
477
  if (link_info->relocatable
478
      || (sec->flags & SEC_RELOC) == 0
479
      || sec->reloc_count == 0)
480
    return TRUE;
481
 
482
#ifdef INCLUDE_SHMEDIA
483
  if (elf_section_data (sec)->this_hdr.sh_flags
484
      & (SHF_SH5_ISA32 | SHF_SH5_ISA32_MIXED))
485
    {
486
      return TRUE;
487
    }
488
#endif
489
 
490
  symtab_hdr = &elf_symtab_hdr (abfd);
491
 
492
  internal_relocs = (_bfd_elf_link_read_relocs
493
                     (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
494
                      link_info->keep_memory));
495
  if (internal_relocs == NULL)
496
    goto error_return;
497
 
498
  have_code = FALSE;
499
 
500
  irelend = internal_relocs + sec->reloc_count;
501
  for (irel = internal_relocs; irel < irelend; irel++)
502
    {
503
      bfd_vma laddr, paddr, symval;
504
      unsigned short insn;
505
      Elf_Internal_Rela *irelfn, *irelscan, *irelcount;
506
      bfd_signed_vma foff;
507
 
508
      if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE)
509
        have_code = TRUE;
510
 
511
      if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES)
512
        continue;
513
 
514
      /* Get the section contents.  */
515
      if (contents == NULL)
516
        {
517
          if (elf_section_data (sec)->this_hdr.contents != NULL)
518
            contents = elf_section_data (sec)->this_hdr.contents;
519
          else
520
            {
521
              if (!bfd_malloc_and_get_section (abfd, sec, &contents))
522
                goto error_return;
523
            }
524
        }
525
 
526
      /* The r_addend field of the R_SH_USES reloc will point us to
527
         the register load.  The 4 is because the r_addend field is
528
         computed as though it were a jump offset, which are based
529
         from 4 bytes after the jump instruction.  */
530
      laddr = irel->r_offset + 4 + irel->r_addend;
531
      if (laddr >= sec->size)
532
        {
533
          (*_bfd_error_handler) (_("%B: 0x%lx: warning: bad R_SH_USES offset"),
534
                                 abfd,
535
                                 (unsigned long) irel->r_offset);
536
          continue;
537
        }
538
      insn = bfd_get_16 (abfd, contents + laddr);
539
 
540
      /* If the instruction is not mov.l NN,rN, we don't know what to
541
         do.  */
542
      if ((insn & 0xf000) != 0xd000)
543
        {
544
          ((*_bfd_error_handler)
545
           (_("%B: 0x%lx: warning: R_SH_USES points to unrecognized insn 0x%x"),
546
            abfd, (unsigned long) irel->r_offset, insn));
547
          continue;
548
        }
549
 
550
      /* Get the address from which the register is being loaded.  The
551
         displacement in the mov.l instruction is quadrupled.  It is a
552
         displacement from four bytes after the movl instruction, but,
553
         before adding in the PC address, two least significant bits
554
         of the PC are cleared.  We assume that the section is aligned
555
         on a four byte boundary.  */
556
      paddr = insn & 0xff;
557
      paddr *= 4;
558
      paddr += (laddr + 4) &~ (bfd_vma) 3;
559
      if (paddr >= sec->size)
560
        {
561
          ((*_bfd_error_handler)
562
           (_("%B: 0x%lx: warning: bad R_SH_USES load offset"),
563
            abfd, (unsigned long) irel->r_offset));
564
          continue;
565
        }
566
 
567
      /* Get the reloc for the address from which the register is
568
         being loaded.  This reloc will tell us which function is
569
         actually being called.  */
570
      for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
571
        if (irelfn->r_offset == paddr
572
            && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32)
573
          break;
574
      if (irelfn >= irelend)
575
        {
576
          ((*_bfd_error_handler)
577
           (_("%B: 0x%lx: warning: could not find expected reloc"),
578
            abfd, (unsigned long) paddr));
579
          continue;
580
        }
581
 
582
      /* Read this BFD's symbols if we haven't done so already.  */
583
      if (isymbuf == NULL && symtab_hdr->sh_info != 0)
584
        {
585
          isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
586
          if (isymbuf == NULL)
587
            isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
588
                                            symtab_hdr->sh_info, 0,
589
                                            NULL, NULL, NULL);
590
          if (isymbuf == NULL)
591
            goto error_return;
592
        }
593
 
594
      /* Get the value of the symbol referred to by the reloc.  */
595
      if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
596
        {
597
          /* A local symbol.  */
598
          Elf_Internal_Sym *isym;
599
 
600
          isym = isymbuf + ELF32_R_SYM (irelfn->r_info);
601
          if (isym->st_shndx
602
              != (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec))
603
            {
604
              ((*_bfd_error_handler)
605
               (_("%B: 0x%lx: warning: symbol in unexpected section"),
606
                abfd, (unsigned long) paddr));
607
              continue;
608
            }
609
 
610
          symval = (isym->st_value
611
                    + sec->output_section->vma
612
                    + sec->output_offset);
613
        }
614
      else
615
        {
616
          unsigned long indx;
617
          struct elf_link_hash_entry *h;
618
 
619
          indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info;
620
          h = elf_sym_hashes (abfd)[indx];
621
          BFD_ASSERT (h != NULL);
622
          if (h->root.type != bfd_link_hash_defined
623
              && h->root.type != bfd_link_hash_defweak)
624
            {
625
              /* This appears to be a reference to an undefined
626
                 symbol.  Just ignore it--it will be caught by the
627
                 regular reloc processing.  */
628
              continue;
629
            }
630
 
631
          symval = (h->root.u.def.value
632
                    + h->root.u.def.section->output_section->vma
633
                    + h->root.u.def.section->output_offset);
634
        }
635
 
636
      if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
637
        symval += bfd_get_32 (abfd, contents + paddr);
638
      else
639
        symval += irelfn->r_addend;
640
 
641
      /* See if this function call can be shortened.  */
642
      foff = (symval
643
              - (irel->r_offset
644
                 + sec->output_section->vma
645
                 + sec->output_offset
646
                 + 4));
647
      /* A branch to an address beyond ours might be increased by an
648
         .align that doesn't move when bytes behind us are deleted.
649
         So, we add some slop in this calculation to allow for
650
         that.  */
651
      if (foff < -0x1000 || foff >= 0x1000 - 8)
652
        {
653
          /* After all that work, we can't shorten this function call.  */
654
          continue;
655
        }
656
 
657
      /* Shorten the function call.  */
658
 
659
      /* For simplicity of coding, we are going to modify the section
660
         contents, the section relocs, and the BFD symbol table.  We
661
         must tell the rest of the code not to free up this
662
         information.  It would be possible to instead create a table
663
         of changes which have to be made, as is done in coff-mips.c;
664
         that would be more work, but would require less memory when
665
         the linker is run.  */
666
 
667
      elf_section_data (sec)->relocs = internal_relocs;
668
      elf_section_data (sec)->this_hdr.contents = contents;
669
      symtab_hdr->contents = (unsigned char *) isymbuf;
670
 
671
      /* Replace the jsr with a bsr.  */
672
 
673
      /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
674
         replace the jsr with a bsr.  */
675
      irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W);
676
      /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
677
         here, but that only checks if the symbol is an external symbol,
678
         not if the symbol is in a different section.  Besides, we need
679
         a consistent meaning for the relocation, so we just assume here that
680
         the value of the symbol is not available.  */
681
 
682
      /* We can't fully resolve this yet, because the external
683
         symbol value may be changed by future relaxing.  We let
684
         the final link phase handle it.  */
685
      bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
686
 
687
      irel->r_addend = -4;
688
 
689
      /* When we calculated the symbol "value" we had an offset in the
690
         DIR32's word in memory (we read and add it above).  However,
691
         the jsr we create does NOT have this offset encoded, so we
692
         have to add it to the addend to preserve it.  */
693
      irel->r_addend += bfd_get_32 (abfd, contents + paddr);
694
 
695
      /* See if there is another R_SH_USES reloc referring to the same
696
         register load.  */
697
      for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
698
        if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES
699
            && laddr == irelscan->r_offset + 4 + irelscan->r_addend)
700
          break;
701
      if (irelscan < irelend)
702
        {
703
          /* Some other function call depends upon this register load,
704
             and we have not yet converted that function call.
705
             Indeed, we may never be able to convert it.  There is
706
             nothing else we can do at this point.  */
707
          continue;
708
        }
709
 
710
      /* Look for a R_SH_COUNT reloc on the location where the
711
         function address is stored.  Do this before deleting any
712
         bytes, to avoid confusion about the address.  */
713
      for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
714
        if (irelcount->r_offset == paddr
715
            && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT)
716
          break;
717
 
718
      /* Delete the register load.  */
719
      if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2))
720
        goto error_return;
721
 
722
      /* That will change things, so, just in case it permits some
723
         other function call to come within range, we should relax
724
         again.  Note that this is not required, and it may be slow.  */
725
      *again = TRUE;
726
 
727
      /* Now check whether we got a COUNT reloc.  */
728
      if (irelcount >= irelend)
729
        {
730
          ((*_bfd_error_handler)
731
           (_("%B: 0x%lx: warning: could not find expected COUNT reloc"),
732
            abfd, (unsigned long) paddr));
733
          continue;
734
        }
735
 
736
      /* The number of uses is stored in the r_addend field.  We've
737
         just deleted one.  */
738
      if (irelcount->r_addend == 0)
739
        {
740
          ((*_bfd_error_handler) (_("%B: 0x%lx: warning: bad count"),
741
                                  abfd,
742
                                  (unsigned long) paddr));
743
          continue;
744
        }
745
 
746
      --irelcount->r_addend;
747
 
748
      /* If there are no more uses, we can delete the address.  Reload
749
         the address from irelfn, in case it was changed by the
750
         previous call to sh_elf_relax_delete_bytes.  */
751
      if (irelcount->r_addend == 0)
752
        {
753
          if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4))
754
            goto error_return;
755
        }
756
 
757
      /* We've done all we can with that function call.  */
758
    }
759
 
760
  /* Look for load and store instructions that we can align on four
761
     byte boundaries.  */
762
  if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4
763
      && have_code)
764
    {
765
      bfd_boolean swapped;
766
 
767
      /* Get the section contents.  */
768
      if (contents == NULL)
769
        {
770
          if (elf_section_data (sec)->this_hdr.contents != NULL)
771
            contents = elf_section_data (sec)->this_hdr.contents;
772
          else
773
            {
774
              if (!bfd_malloc_and_get_section (abfd, sec, &contents))
775
                goto error_return;
776
            }
777
        }
778
 
779
      if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents,
780
                                &swapped))
781
        goto error_return;
782
 
783
      if (swapped)
784
        {
785
          elf_section_data (sec)->relocs = internal_relocs;
786
          elf_section_data (sec)->this_hdr.contents = contents;
787
          symtab_hdr->contents = (unsigned char *) isymbuf;
788
        }
789
    }
790
 
791
  if (isymbuf != NULL
792
      && symtab_hdr->contents != (unsigned char *) isymbuf)
793
    {
794
      if (! link_info->keep_memory)
795
        free (isymbuf);
796
      else
797
        {
798
          /* Cache the symbols for elf_link_input_bfd.  */
799
          symtab_hdr->contents = (unsigned char *) isymbuf;
800
        }
801
    }
802
 
803
  if (contents != NULL
804
      && elf_section_data (sec)->this_hdr.contents != contents)
805
    {
806
      if (! link_info->keep_memory)
807
        free (contents);
808
      else
809
        {
810
          /* Cache the section contents for elf_link_input_bfd.  */
811
          elf_section_data (sec)->this_hdr.contents = contents;
812
        }
813
    }
814
 
815
  if (internal_relocs != NULL
816
      && elf_section_data (sec)->relocs != internal_relocs)
817
    free (internal_relocs);
818
 
819
  return TRUE;
820
 
821
 error_return:
822
  if (isymbuf != NULL
823
      && symtab_hdr->contents != (unsigned char *) isymbuf)
824
    free (isymbuf);
825
  if (contents != NULL
826
      && elf_section_data (sec)->this_hdr.contents != contents)
827
    free (contents);
828
  if (internal_relocs != NULL
829
      && elf_section_data (sec)->relocs != internal_relocs)
830
    free (internal_relocs);
831
 
832
  return FALSE;
833
}
834
 
835
/* Delete some bytes from a section while relaxing.  FIXME: There is a
836
   lot of duplication between this function and sh_relax_delete_bytes
837
   in coff-sh.c.  */
838
 
839
static bfd_boolean
840
sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr,
841
                           int count)
842
{
843
  Elf_Internal_Shdr *symtab_hdr;
844
  unsigned int sec_shndx;
845
  bfd_byte *contents;
846
  Elf_Internal_Rela *irel, *irelend;
847
  Elf_Internal_Rela *irelalign;
848
  bfd_vma toaddr;
849
  Elf_Internal_Sym *isymbuf, *isym, *isymend;
850
  struct elf_link_hash_entry **sym_hashes;
851
  struct elf_link_hash_entry **end_hashes;
852
  unsigned int symcount;
853
  asection *o;
854
 
855
  symtab_hdr = &elf_symtab_hdr (abfd);
856
  isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
857
 
858
  sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
859
 
860
  contents = elf_section_data (sec)->this_hdr.contents;
861
 
862
  /* The deletion must stop at the next ALIGN reloc for an aligment
863
     power larger than the number of bytes we are deleting.  */
864
 
865
  irelalign = NULL;
866
  toaddr = sec->size;
867
 
868
  irel = elf_section_data (sec)->relocs;
869
  irelend = irel + sec->reloc_count;
870
  for (; irel < irelend; irel++)
871
    {
872
      if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
873
          && irel->r_offset > addr
874
          && count < (1 << irel->r_addend))
875
        {
876
          irelalign = irel;
877
          toaddr = irel->r_offset;
878
          break;
879
        }
880
    }
881
 
882
  /* Actually delete the bytes.  */
883
  memmove (contents + addr, contents + addr + count,
884
           (size_t) (toaddr - addr - count));
885
  if (irelalign == NULL)
886
    sec->size -= count;
887
  else
888
    {
889
      int i;
890
 
891
#define NOP_OPCODE (0x0009)
892
 
893
      BFD_ASSERT ((count & 1) == 0);
894
      for (i = 0; i < count; i += 2)
895
        bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
896
    }
897
 
898
  /* Adjust all the relocs.  */
899
  for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
900
    {
901
      bfd_vma nraddr, stop;
902
      bfd_vma start = 0;
903
      int insn = 0;
904
      int off, adjust, oinsn;
905
      bfd_signed_vma voff = 0;
906
      bfd_boolean overflow;
907
 
908
      /* Get the new reloc address.  */
909
      nraddr = irel->r_offset;
910
      if ((irel->r_offset > addr
911
           && irel->r_offset < toaddr)
912
          || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
913
              && irel->r_offset == toaddr))
914
        nraddr -= count;
915
 
916
      /* See if this reloc was for the bytes we have deleted, in which
917
         case we no longer care about it.  Don't delete relocs which
918
         represent addresses, though.  */
919
      if (irel->r_offset >= addr
920
          && irel->r_offset < addr + count
921
          && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN
922
          && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE
923
          && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA
924
          && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL)
925
        irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
926
                                     (int) R_SH_NONE);
927
 
928
      /* If this is a PC relative reloc, see if the range it covers
929
         includes the bytes we have deleted.  */
930
      switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
931
        {
932
        default:
933
          break;
934
 
935
        case R_SH_DIR8WPN:
936
        case R_SH_IND12W:
937
        case R_SH_DIR8WPZ:
938
        case R_SH_DIR8WPL:
939
          start = irel->r_offset;
940
          insn = bfd_get_16 (abfd, contents + nraddr);
941
          break;
942
        }
943
 
944
      switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
945
        {
946
        default:
947
          start = stop = addr;
948
          break;
949
 
950
        case R_SH_DIR32:
951
          /* If this reloc is against a symbol defined in this
952
             section, and the symbol will not be adjusted below, we
953
             must check the addend to see it will put the value in
954
             range to be adjusted, and hence must be changed.  */
955
          if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
956
            {
957
              isym = isymbuf + ELF32_R_SYM (irel->r_info);
958
              if (isym->st_shndx == sec_shndx
959
                  && (isym->st_value <= addr
960
                      || isym->st_value >= toaddr))
961
                {
962
                  bfd_vma val;
963
 
964
                  if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
965
                    {
966
                      val = bfd_get_32 (abfd, contents + nraddr);
967
                      val += isym->st_value;
968
                      if (val > addr && val < toaddr)
969
                        bfd_put_32 (abfd, val - count, contents + nraddr);
970
                    }
971
                  else
972
                    {
973
                      val = isym->st_value + irel->r_addend;
974
                      if (val > addr && val < toaddr)
975
                        irel->r_addend -= count;
976
                    }
977
                }
978
            }
979
          start = stop = addr;
980
          break;
981
 
982
        case R_SH_DIR8WPN:
983
          off = insn & 0xff;
984
          if (off & 0x80)
985
            off -= 0x100;
986
          stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
987
          break;
988
 
989
        case R_SH_IND12W:
990
          off = insn & 0xfff;
991
          if (! off)
992
            {
993
              /* This has been made by previous relaxation.  Since the
994
                 relocation will be against an external symbol, the
995
                 final relocation will just do the right thing.  */
996
              start = stop = addr;
997
            }
998
          else
999
            {
1000
              if (off & 0x800)
1001
                off -= 0x1000;
1002
              stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
1003
 
1004
              /* The addend will be against the section symbol, thus
1005
                 for adjusting the addend, the relevant start is the
1006
                 start of the section.
1007
                 N.B. If we want to abandon in-place changes here and
1008
                 test directly using symbol + addend, we have to take into
1009
                 account that the addend has already been adjusted by -4.  */
1010
              if (stop > addr && stop < toaddr)
1011
                irel->r_addend -= count;
1012
            }
1013
          break;
1014
 
1015
        case R_SH_DIR8WPZ:
1016
          off = insn & 0xff;
1017
          stop = start + 4 + off * 2;
1018
          break;
1019
 
1020
        case R_SH_DIR8WPL:
1021
          off = insn & 0xff;
1022
          stop = (start & ~(bfd_vma) 3) + 4 + off * 4;
1023
          break;
1024
 
1025
        case R_SH_SWITCH8:
1026
        case R_SH_SWITCH16:
1027
        case R_SH_SWITCH32:
1028
          /* These relocs types represent
1029
               .word L2-L1
1030
             The r_addend field holds the difference between the reloc
1031
             address and L1.  That is the start of the reloc, and
1032
             adding in the contents gives us the top.  We must adjust
1033
             both the r_offset field and the section contents.
1034
             N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1035
             and the elf bfd r_offset is called r_vaddr.  */
1036
 
1037
          stop = irel->r_offset;
1038
          start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend);
1039
 
1040
          if (start > addr
1041
              && start < toaddr
1042
              && (stop <= addr || stop >= toaddr))
1043
            irel->r_addend += count;
1044
          else if (stop > addr
1045
                   && stop < toaddr
1046
                   && (start <= addr || start >= toaddr))
1047
            irel->r_addend -= count;
1048
 
1049
          if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16)
1050
            voff = bfd_get_signed_16 (abfd, contents + nraddr);
1051
          else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8)
1052
            voff = bfd_get_8 (abfd, contents + nraddr);
1053
          else
1054
            voff = bfd_get_signed_32 (abfd, contents + nraddr);
1055
          stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1056
 
1057
          break;
1058
 
1059
        case R_SH_USES:
1060
          start = irel->r_offset;
1061
          stop = (bfd_vma) ((bfd_signed_vma) start
1062
                            + (long) irel->r_addend
1063
                            + 4);
1064
          break;
1065
        }
1066
 
1067
      if (start > addr
1068
          && start < toaddr
1069
          && (stop <= addr || stop >= toaddr))
1070
        adjust = count;
1071
      else if (stop > addr
1072
               && stop < toaddr
1073
               && (start <= addr || start >= toaddr))
1074
        adjust = - count;
1075
      else
1076
        adjust = 0;
1077
 
1078
      if (adjust != 0)
1079
        {
1080
          oinsn = insn;
1081
          overflow = FALSE;
1082
          switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
1083
            {
1084
            default:
1085
              abort ();
1086
              break;
1087
 
1088
            case R_SH_DIR8WPN:
1089
            case R_SH_DIR8WPZ:
1090
              insn += adjust / 2;
1091
              if ((oinsn & 0xff00) != (insn & 0xff00))
1092
                overflow = TRUE;
1093
              bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1094
              break;
1095
 
1096
            case R_SH_IND12W:
1097
              insn += adjust / 2;
1098
              if ((oinsn & 0xf000) != (insn & 0xf000))
1099
                overflow = TRUE;
1100
              bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1101
              break;
1102
 
1103
            case R_SH_DIR8WPL:
1104
              BFD_ASSERT (adjust == count || count >= 4);
1105
              if (count >= 4)
1106
                insn += adjust / 4;
1107
              else
1108
                {
1109
                  if ((irel->r_offset & 3) == 0)
1110
                    ++insn;
1111
                }
1112
              if ((oinsn & 0xff00) != (insn & 0xff00))
1113
                overflow = TRUE;
1114
              bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1115
              break;
1116
 
1117
            case R_SH_SWITCH8:
1118
              voff += adjust;
1119
              if (voff < 0 || voff >= 0xff)
1120
                overflow = TRUE;
1121
              bfd_put_8 (abfd, voff, contents + nraddr);
1122
              break;
1123
 
1124
            case R_SH_SWITCH16:
1125
              voff += adjust;
1126
              if (voff < - 0x8000 || voff >= 0x8000)
1127
                overflow = TRUE;
1128
              bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr);
1129
              break;
1130
 
1131
            case R_SH_SWITCH32:
1132
              voff += adjust;
1133
              bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr);
1134
              break;
1135
 
1136
            case R_SH_USES:
1137
              irel->r_addend += adjust;
1138
              break;
1139
            }
1140
 
1141
          if (overflow)
1142
            {
1143
              ((*_bfd_error_handler)
1144
               (_("%B: 0x%lx: fatal: reloc overflow while relaxing"),
1145
                abfd, (unsigned long) irel->r_offset));
1146
              bfd_set_error (bfd_error_bad_value);
1147
              return FALSE;
1148
            }
1149
        }
1150
 
1151
      irel->r_offset = nraddr;
1152
    }
1153
 
1154
  /* Look through all the other sections.  If there contain any IMM32
1155
     relocs against internal symbols which we are not going to adjust
1156
     below, we may need to adjust the addends.  */
1157
  for (o = abfd->sections; o != NULL; o = o->next)
1158
    {
1159
      Elf_Internal_Rela *internal_relocs;
1160
      Elf_Internal_Rela *irelscan, *irelscanend;
1161
      bfd_byte *ocontents;
1162
 
1163
      if (o == sec
1164
          || (o->flags & SEC_RELOC) == 0
1165
          || o->reloc_count == 0)
1166
        continue;
1167
 
1168
      /* We always cache the relocs.  Perhaps, if info->keep_memory is
1169
         FALSE, we should free them, if we are permitted to, when we
1170
         leave sh_coff_relax_section.  */
1171
      internal_relocs = (_bfd_elf_link_read_relocs
1172
                         (abfd, o, NULL, (Elf_Internal_Rela *) NULL, TRUE));
1173
      if (internal_relocs == NULL)
1174
        return FALSE;
1175
 
1176
      ocontents = NULL;
1177
      irelscanend = internal_relocs + o->reloc_count;
1178
      for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
1179
        {
1180
          /* Dwarf line numbers use R_SH_SWITCH32 relocs.  */
1181
          if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32)
1182
            {
1183
              bfd_vma start, stop;
1184
              bfd_signed_vma voff;
1185
 
1186
              if (ocontents == NULL)
1187
                {
1188
                  if (elf_section_data (o)->this_hdr.contents != NULL)
1189
                    ocontents = elf_section_data (o)->this_hdr.contents;
1190
                  else
1191
                    {
1192
                      /* We always cache the section contents.
1193
                         Perhaps, if info->keep_memory is FALSE, we
1194
                         should free them, if we are permitted to,
1195
                         when we leave sh_coff_relax_section.  */
1196
                      if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1197
                        {
1198
                          if (ocontents != NULL)
1199
                            free (ocontents);
1200
                          return FALSE;
1201
                        }
1202
 
1203
                      elf_section_data (o)->this_hdr.contents = ocontents;
1204
                    }
1205
                }
1206
 
1207
              stop = irelscan->r_offset;
1208
              start
1209
                = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend);
1210
 
1211
              /* STOP is in a different section, so it won't change.  */
1212
              if (start > addr && start < toaddr)
1213
                irelscan->r_addend += count;
1214
 
1215
              voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset);
1216
              stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1217
 
1218
              if (start > addr
1219
                  && start < toaddr
1220
                  && (stop <= addr || stop >= toaddr))
1221
                bfd_put_signed_32 (abfd, (bfd_vma) voff + count,
1222
                                   ocontents + irelscan->r_offset);
1223
              else if (stop > addr
1224
                       && stop < toaddr
1225
                       && (start <= addr || start >= toaddr))
1226
                bfd_put_signed_32 (abfd, (bfd_vma) voff - count,
1227
                                   ocontents + irelscan->r_offset);
1228
            }
1229
 
1230
          if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32)
1231
            continue;
1232
 
1233
          if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info)
1234
            continue;
1235
 
1236
 
1237
          isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1238
          if (isym->st_shndx == sec_shndx
1239
              && (isym->st_value <= addr
1240
                  || isym->st_value >= toaddr))
1241
            {
1242
              bfd_vma val;
1243
 
1244
              if (ocontents == NULL)
1245
                {
1246
                  if (elf_section_data (o)->this_hdr.contents != NULL)
1247
                    ocontents = elf_section_data (o)->this_hdr.contents;
1248
                  else
1249
                    {
1250
                      /* We always cache the section contents.
1251
                         Perhaps, if info->keep_memory is FALSE, we
1252
                         should free them, if we are permitted to,
1253
                         when we leave sh_coff_relax_section.  */
1254
                      if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1255
                        {
1256
                          if (ocontents != NULL)
1257
                            free (ocontents);
1258
                          return FALSE;
1259
                        }
1260
 
1261
                      elf_section_data (o)->this_hdr.contents = ocontents;
1262
                    }
1263
                }
1264
 
1265
              val = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
1266
              val += isym->st_value;
1267
              if (val > addr && val < toaddr)
1268
                bfd_put_32 (abfd, val - count,
1269
                            ocontents + irelscan->r_offset);
1270
            }
1271
        }
1272
    }
1273
 
1274
  /* Adjust the local symbols defined in this section.  */
1275
  isymend = isymbuf + symtab_hdr->sh_info;
1276
  for (isym = isymbuf; isym < isymend; isym++)
1277
    {
1278
      if (isym->st_shndx == sec_shndx
1279
          && isym->st_value > addr
1280
          && isym->st_value < toaddr)
1281
        isym->st_value -= count;
1282
    }
1283
 
1284
  /* Now adjust the global symbols defined in this section.  */
1285
  symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1286
              - symtab_hdr->sh_info);
1287
  sym_hashes = elf_sym_hashes (abfd);
1288
  end_hashes = sym_hashes + symcount;
1289
  for (; sym_hashes < end_hashes; sym_hashes++)
1290
    {
1291
      struct elf_link_hash_entry *sym_hash = *sym_hashes;
1292
      if ((sym_hash->root.type == bfd_link_hash_defined
1293
           || sym_hash->root.type == bfd_link_hash_defweak)
1294
          && sym_hash->root.u.def.section == sec
1295
          && sym_hash->root.u.def.value > addr
1296
          && sym_hash->root.u.def.value < toaddr)
1297
        {
1298
          sym_hash->root.u.def.value -= count;
1299
        }
1300
    }
1301
 
1302
  /* See if we can move the ALIGN reloc forward.  We have adjusted
1303
     r_offset for it already.  */
1304
  if (irelalign != NULL)
1305
    {
1306
      bfd_vma alignto, alignaddr;
1307
 
1308
      alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
1309
      alignaddr = BFD_ALIGN (irelalign->r_offset,
1310
                             1 << irelalign->r_addend);
1311
      if (alignto != alignaddr)
1312
        {
1313
          /* Tail recursion.  */
1314
          return sh_elf_relax_delete_bytes (abfd, sec, alignaddr,
1315
                                            (int) (alignto - alignaddr));
1316
        }
1317
    }
1318
 
1319
  return TRUE;
1320
}
1321
 
1322
/* Look for loads and stores which we can align to four byte
1323
   boundaries.  This is like sh_align_loads in coff-sh.c.  */
1324
 
1325
static bfd_boolean
1326
sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1327
                    Elf_Internal_Rela *internal_relocs,
1328
                    bfd_byte *contents ATTRIBUTE_UNUSED,
1329
                    bfd_boolean *pswapped)
1330
{
1331
  Elf_Internal_Rela *irel, *irelend;
1332
  bfd_vma *labels = NULL;
1333
  bfd_vma *label, *label_end;
1334
  bfd_size_type amt;
1335
 
1336
  *pswapped = FALSE;
1337
 
1338
  irelend = internal_relocs + sec->reloc_count;
1339
 
1340
  /* Get all the addresses with labels on them.  */
1341
  amt = sec->reloc_count;
1342
  amt *= sizeof (bfd_vma);
1343
  labels = (bfd_vma *) bfd_malloc (amt);
1344
  if (labels == NULL)
1345
    goto error_return;
1346
  label_end = labels;
1347
  for (irel = internal_relocs; irel < irelend; irel++)
1348
    {
1349
      if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL)
1350
        {
1351
          *label_end = irel->r_offset;
1352
          ++label_end;
1353
        }
1354
    }
1355
 
1356
  /* Note that the assembler currently always outputs relocs in
1357
     address order.  If that ever changes, this code will need to sort
1358
     the label values and the relocs.  */
1359
 
1360
  label = labels;
1361
 
1362
  for (irel = internal_relocs; irel < irelend; irel++)
1363
    {
1364
      bfd_vma start, stop;
1365
 
1366
      if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE)
1367
        continue;
1368
 
1369
      start = irel->r_offset;
1370
 
1371
      for (irel++; irel < irelend; irel++)
1372
        if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA)
1373
          break;
1374
      if (irel < irelend)
1375
        stop = irel->r_offset;
1376
      else
1377
        stop = sec->size;
1378
 
1379
      if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns,
1380
                                     internal_relocs, &label,
1381
                                     label_end, start, stop, pswapped))
1382
        goto error_return;
1383
    }
1384
 
1385
  free (labels);
1386
 
1387
  return TRUE;
1388
 
1389
 error_return:
1390
  if (labels != NULL)
1391
    free (labels);
1392
  return FALSE;
1393
}
1394
 
1395
#ifndef SH64_ELF
1396
/* Swap two SH instructions.  This is like sh_swap_insns in coff-sh.c.  */
1397
 
1398
static bfd_boolean
1399
sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs,
1400
                   bfd_byte *contents, bfd_vma addr)
1401
{
1402
  Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs;
1403
  unsigned short i1, i2;
1404
  Elf_Internal_Rela *irel, *irelend;
1405
 
1406
  /* Swap the instructions themselves.  */
1407
  i1 = bfd_get_16 (abfd, contents + addr);
1408
  i2 = bfd_get_16 (abfd, contents + addr + 2);
1409
  bfd_put_16 (abfd, (bfd_vma) i2, contents + addr);
1410
  bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2);
1411
 
1412
  /* Adjust all reloc addresses.  */
1413
  irelend = internal_relocs + sec->reloc_count;
1414
  for (irel = internal_relocs; irel < irelend; irel++)
1415
    {
1416
      enum elf_sh_reloc_type type;
1417
      int add;
1418
 
1419
      /* There are a few special types of relocs that we don't want to
1420
         adjust.  These relocs do not apply to the instruction itself,
1421
         but are only associated with the address.  */
1422
      type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info);
1423
      if (type == R_SH_ALIGN
1424
          || type == R_SH_CODE
1425
          || type == R_SH_DATA
1426
          || type == R_SH_LABEL)
1427
        continue;
1428
 
1429
      /* If an R_SH_USES reloc points to one of the addresses being
1430
         swapped, we must adjust it.  It would be incorrect to do this
1431
         for a jump, though, since we want to execute both
1432
         instructions after the jump.  (We have avoided swapping
1433
         around a label, so the jump will not wind up executing an
1434
         instruction it shouldn't).  */
1435
      if (type == R_SH_USES)
1436
        {
1437
          bfd_vma off;
1438
 
1439
          off = irel->r_offset + 4 + irel->r_addend;
1440
          if (off == addr)
1441
            irel->r_offset += 2;
1442
          else if (off == addr + 2)
1443
            irel->r_offset -= 2;
1444
        }
1445
 
1446
      if (irel->r_offset == addr)
1447
        {
1448
          irel->r_offset += 2;
1449
          add = -2;
1450
        }
1451
      else if (irel->r_offset == addr + 2)
1452
        {
1453
          irel->r_offset -= 2;
1454
          add = 2;
1455
        }
1456
      else
1457
        add = 0;
1458
 
1459
      if (add != 0)
1460
        {
1461
          bfd_byte *loc;
1462
          unsigned short insn, oinsn;
1463
          bfd_boolean overflow;
1464
 
1465
          loc = contents + irel->r_offset;
1466
          overflow = FALSE;
1467
          switch (type)
1468
            {
1469
            default:
1470
              break;
1471
 
1472
            case R_SH_DIR8WPN:
1473
            case R_SH_DIR8WPZ:
1474
              insn = bfd_get_16 (abfd, loc);
1475
              oinsn = insn;
1476
              insn += add / 2;
1477
              if ((oinsn & 0xff00) != (insn & 0xff00))
1478
                overflow = TRUE;
1479
              bfd_put_16 (abfd, (bfd_vma) insn, loc);
1480
              break;
1481
 
1482
            case R_SH_IND12W:
1483
              insn = bfd_get_16 (abfd, loc);
1484
              oinsn = insn;
1485
              insn += add / 2;
1486
              if ((oinsn & 0xf000) != (insn & 0xf000))
1487
                overflow = TRUE;
1488
              bfd_put_16 (abfd, (bfd_vma) insn, loc);
1489
              break;
1490
 
1491
            case R_SH_DIR8WPL:
1492
              /* This reloc ignores the least significant 3 bits of
1493
                 the program counter before adding in the offset.
1494
                 This means that if ADDR is at an even address, the
1495
                 swap will not affect the offset.  If ADDR is an at an
1496
                 odd address, then the instruction will be crossing a
1497
                 four byte boundary, and must be adjusted.  */
1498
              if ((addr & 3) != 0)
1499
                {
1500
                  insn = bfd_get_16 (abfd, loc);
1501
                  oinsn = insn;
1502
                  insn += add / 2;
1503
                  if ((oinsn & 0xff00) != (insn & 0xff00))
1504
                    overflow = TRUE;
1505
                  bfd_put_16 (abfd, (bfd_vma) insn, loc);
1506
                }
1507
 
1508
              break;
1509
            }
1510
 
1511
          if (overflow)
1512
            {
1513
              ((*_bfd_error_handler)
1514
               (_("%B: 0x%lx: fatal: reloc overflow while relaxing"),
1515
                abfd, (unsigned long) irel->r_offset));
1516
              bfd_set_error (bfd_error_bad_value);
1517
              return FALSE;
1518
            }
1519
        }
1520
    }
1521
 
1522
  return TRUE;
1523
}
1524
#endif /* defined SH64_ELF */
1525
 
1526
/* Describes one of the various PLT styles.  */
1527
 
1528
struct elf_sh_plt_info
1529
{
1530
  /* The template for the first PLT entry, or NULL if there is no special
1531
     first entry.  */
1532
  const bfd_byte *plt0_entry;
1533
 
1534
  /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL.  */
1535
  bfd_vma plt0_entry_size;
1536
 
1537
  /* Index I is the offset into PLT0_ENTRY of a pointer to
1538
     _GLOBAL_OFFSET_TABLE_ + I * 4.  The value is MINUS_ONE
1539
     if there is no such pointer.  */
1540
  bfd_vma plt0_got_fields[3];
1541
 
1542
  /* The template for a symbol's PLT entry.  */
1543
  const bfd_byte *symbol_entry;
1544
 
1545
  /* The size of SYMBOL_ENTRY in bytes.  */
1546
  bfd_vma symbol_entry_size;
1547
 
1548
  /* Byte offsets of fields in SYMBOL_ENTRY.  Not all fields are used
1549
     on all targets.  The comments by each member indicate the value
1550
     that the field must hold.  */
1551
  struct {
1552
    bfd_vma got_entry; /* the address of the symbol's .got.plt entry */
1553
    bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */
1554
    bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */
1555
  } symbol_fields;
1556
 
1557
  /* The offset of the resolver stub from the start of SYMBOL_ENTRY.  */
1558
  bfd_vma symbol_resolve_offset;
1559
};
1560
 
1561
#ifdef INCLUDE_SHMEDIA
1562
 
1563
/* The size in bytes of an entry in the procedure linkage table.  */
1564
 
1565
#define ELF_PLT_ENTRY_SIZE 64
1566
 
1567
/* First entry in an absolute procedure linkage table look like this.  */
1568
 
1569
static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1570
{
1571
  0xcc, 0x00, 0x01, 0x10, /* movi  .got.plt >> 16, r17 */
1572
  0xc8, 0x00, 0x01, 0x10, /* shori .got.plt & 65535, r17 */
1573
  0x89, 0x10, 0x09, 0x90, /* ld.l  r17, 8, r25 */
1574
  0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1575
  0x89, 0x10, 0x05, 0x10, /* ld.l  r17, 4, r17 */
1576
  0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1577
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1578
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1579
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1580
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1581
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1582
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1583
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1584
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1585
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1586
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1587
};
1588
 
1589
static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1590
{
1591
  0x10, 0x01, 0x00, 0xcc, /* movi  .got.plt >> 16, r17 */
1592
  0x10, 0x01, 0x00, 0xc8, /* shori .got.plt & 65535, r17 */
1593
  0x90, 0x09, 0x10, 0x89, /* ld.l  r17, 8, r25 */
1594
  0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1595
  0x10, 0x05, 0x10, 0x89, /* ld.l  r17, 4, r17 */
1596
  0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1597
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1598
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1599
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1600
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1601
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1602
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1603
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1604
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1605
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1606
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1607
};
1608
 
1609
/* Sebsequent entries in an absolute procedure linkage table look like
1610
   this.  */
1611
 
1612
static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1613
{
1614
  0xcc, 0x00, 0x01, 0x90, /* movi  nameN-in-GOT >> 16, r25 */
1615
  0xc8, 0x00, 0x01, 0x90, /* shori nameN-in-GOT & 65535, r25 */
1616
  0x89, 0x90, 0x01, 0x90, /* ld.l  r25, 0, r25 */
1617
  0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1618
  0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1619
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1620
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1621
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1622
  0xcc, 0x00, 0x01, 0x90, /* movi  .PLT0 >> 16, r25 */
1623
  0xc8, 0x00, 0x01, 0x90, /* shori .PLT0 & 65535, r25 */
1624
  0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1625
  0xcc, 0x00, 0x01, 0x50, /* movi  reloc-offset >> 16, r21 */
1626
  0xc8, 0x00, 0x01, 0x50, /* shori reloc-offset & 65535, r21 */
1627
  0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1628
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1629
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1630
};
1631
 
1632
static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1633
{
1634
  0x90, 0x01, 0x00, 0xcc, /* movi  nameN-in-GOT >> 16, r25 */
1635
  0x90, 0x01, 0x00, 0xc8, /* shori nameN-in-GOT & 65535, r25 */
1636
  0x90, 0x01, 0x90, 0x89, /* ld.l  r25, 0, r25 */
1637
  0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1638
  0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1639
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1640
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1641
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1642
  0x90, 0x01, 0x00, 0xcc, /* movi  .PLT0 >> 16, r25 */
1643
  0x90, 0x01, 0x00, 0xc8, /* shori .PLT0 & 65535, r25 */
1644
  0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1645
  0x50, 0x01, 0x00, 0xcc, /* movi  reloc-offset >> 16, r21 */
1646
  0x50, 0x01, 0x00, 0xc8, /* shori reloc-offset & 65535, r21 */
1647
  0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1648
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1649
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1650
};
1651
 
1652
/* Entries in a PIC procedure linkage table look like this.  */
1653
 
1654
static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1655
{
1656
  0xcc, 0x00, 0x01, 0x90, /* movi  nameN@GOT >> 16, r25 */
1657
  0xc8, 0x00, 0x01, 0x90, /* shori nameN@GOT & 65535, r25 */
1658
  0x40, 0xc2, 0x65, 0x90, /* ldx.l r12, r25, r25 */
1659
  0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1660
  0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1661
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1662
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1663
  0x6f, 0xf0, 0xff, 0xf0, /* nop */
1664
  0xce, 0x00, 0x01, 0x10, /* movi  -GOT_BIAS, r17 */
1665
  0x00, 0xc8, 0x45, 0x10, /* add.l r12, r17, r17 */
1666
  0x89, 0x10, 0x09, 0x90, /* ld.l  r17, 8, r25 */
1667
  0x6b, 0xf1, 0x66, 0x00, /* ptabs r25, tr0 */
1668
  0x89, 0x10, 0x05, 0x10, /* ld.l  r17, 4, r17 */
1669
  0xcc, 0x00, 0x01, 0x50, /* movi  reloc-offset >> 16, r21 */
1670
  0xc8, 0x00, 0x01, 0x50, /* shori reloc-offset & 65535, r21 */
1671
  0x44, 0x01, 0xff, 0xf0, /* blink tr0, r63 */
1672
};
1673
 
1674
static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1675
{
1676
  0x90, 0x01, 0x00, 0xcc, /* movi  nameN@GOT >> 16, r25 */
1677
  0x90, 0x01, 0x00, 0xc8, /* shori nameN@GOT & 65535, r25 */
1678
  0x90, 0x65, 0xc2, 0x40, /* ldx.l r12, r25, r25 */
1679
  0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1680
  0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1681
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1682
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1683
  0xf0, 0xff, 0xf0, 0x6f, /* nop */
1684
  0x10, 0x01, 0x00, 0xce, /* movi  -GOT_BIAS, r17 */
1685
  0x10, 0x45, 0xc8, 0x00, /* add.l r12, r17, r17 */
1686
  0x90, 0x09, 0x10, 0x89, /* ld.l  r17, 8, r25 */
1687
  0x00, 0x66, 0xf1, 0x6b, /* ptabs r25, tr0 */
1688
  0x10, 0x05, 0x10, 0x89, /* ld.l  r17, 4, r17 */
1689
  0x50, 0x01, 0x00, 0xcc, /* movi  reloc-offset >> 16, r21 */
1690
  0x50, 0x01, 0x00, 0xc8, /* shori reloc-offset & 65535, r21 */
1691
  0xf0, 0xff, 0x01, 0x44, /* blink tr0, r63 */
1692
};
1693
 
1694
static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1695
  {
1696
    {
1697
      /* Big-endian non-PIC.  */
1698
      elf_sh_plt0_entry_be,
1699
      ELF_PLT_ENTRY_SIZE,
1700
      { 0, MINUS_ONE, MINUS_ONE },
1701
      elf_sh_plt_entry_be,
1702
      ELF_PLT_ENTRY_SIZE,
1703
      { 0, 32, 48 },
1704
      33 /* includes ISA encoding */
1705
    },
1706
    {
1707
      /* Little-endian non-PIC.  */
1708
      elf_sh_plt0_entry_le,
1709
      ELF_PLT_ENTRY_SIZE,
1710
      { 0, MINUS_ONE, MINUS_ONE },
1711
      elf_sh_plt_entry_le,
1712
      ELF_PLT_ENTRY_SIZE,
1713
      { 0, 32, 48 },
1714
      33 /* includes ISA encoding */
1715
    },
1716
  },
1717
  {
1718
    {
1719
      /* Big-endian PIC.  */
1720
      elf_sh_plt0_entry_be,
1721
      ELF_PLT_ENTRY_SIZE,
1722
      { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1723
      elf_sh_pic_plt_entry_be,
1724
      ELF_PLT_ENTRY_SIZE,
1725
      { 0, MINUS_ONE, 52 },
1726
      33 /* includes ISA encoding */
1727
    },
1728
    {
1729
      /* Little-endian PIC.  */
1730
      elf_sh_plt0_entry_le,
1731
      ELF_PLT_ENTRY_SIZE,
1732
      { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1733
      elf_sh_pic_plt_entry_le,
1734
      ELF_PLT_ENTRY_SIZE,
1735
      { 0, MINUS_ONE, 52 },
1736
      33 /* includes ISA encoding */
1737
    },
1738
  }
1739
};
1740
 
1741
/* Return offset of the linker in PLT0 entry.  */
1742
#define elf_sh_plt0_gotplt_offset(info) 0
1743
 
1744
/* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
1745
   VALUE is the field's value and CODE_P is true if VALUE refers to code,
1746
   not data.
1747
 
1748
   On SH64, each 32-bit field is loaded by a movi/shori pair.  */
1749
 
1750
inline static void
1751
install_plt_field (bfd *output_bfd, bfd_boolean code_p,
1752
                   unsigned long value, bfd_byte *addr)
1753
{
1754
  value |= code_p;
1755
  bfd_put_32 (output_bfd,
1756
              bfd_get_32 (output_bfd, addr)
1757
              | ((value >> 6) & 0x3fffc00),
1758
              addr);
1759
  bfd_put_32 (output_bfd,
1760
              bfd_get_32 (output_bfd, addr + 4)
1761
              | ((value << 10) & 0x3fffc00),
1762
              addr + 4);
1763
}
1764
 
1765
/* Return the type of PLT associated with ABFD.  PIC_P is true if
1766
   the object is position-independent.  */
1767
 
1768
static const struct elf_sh_plt_info *
1769
get_plt_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean pic_p)
1770
{
1771
  return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
1772
}
1773
#else
1774
/* The size in bytes of an entry in the procedure linkage table.  */
1775
 
1776
#define ELF_PLT_ENTRY_SIZE 28
1777
 
1778
/* First entry in an absolute procedure linkage table look like this.  */
1779
 
1780
/* Note - this code has been "optimised" not to use r2.  r2 is used by
1781
   GCC to return the address of large structures, so it should not be
1782
   corrupted here.  This does mean however, that this PLT does not conform
1783
   to the SH PIC ABI.  That spec says that r0 contains the type of the PLT
1784
   and r2 contains the GOT id.  This version stores the GOT id in r0 and
1785
   ignores the type.  Loaders can easily detect this difference however,
1786
   since the type will always be 0 or 8, and the GOT ids will always be
1787
   greater than or equal to 12.  */
1788
static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1789
{
1790
  0xd0, 0x05,   /* mov.l 2f,r0 */
1791
  0x60, 0x02,   /* mov.l @r0,r0 */
1792
  0x2f, 0x06,   /* mov.l r0,@-r15 */
1793
  0xd0, 0x03,   /* mov.l 1f,r0 */
1794
  0x60, 0x02,   /* mov.l @r0,r0 */
1795
  0x40, 0x2b,   /* jmp @r0 */
1796
  0x60, 0xf6,   /*  mov.l @r15+,r0 */
1797
  0x00, 0x09,   /* nop */
1798
  0x00, 0x09,   /* nop */
1799
  0x00, 0x09,   /* nop */
1800
  0, 0, 0, 0,       /* 1: replaced with address of .got.plt + 8.  */
1801
  0, 0, 0, 0,       /* 2: replaced with address of .got.plt + 4.  */
1802
};
1803
 
1804
static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1805
{
1806
  0x05, 0xd0,   /* mov.l 2f,r0 */
1807
  0x02, 0x60,   /* mov.l @r0,r0 */
1808
  0x06, 0x2f,   /* mov.l r0,@-r15 */
1809
  0x03, 0xd0,   /* mov.l 1f,r0 */
1810
  0x02, 0x60,   /* mov.l @r0,r0 */
1811
  0x2b, 0x40,   /* jmp @r0 */
1812
  0xf6, 0x60,   /*  mov.l @r15+,r0 */
1813
  0x09, 0x00,   /* nop */
1814
  0x09, 0x00,   /* nop */
1815
  0x09, 0x00,   /* nop */
1816
  0, 0, 0, 0,       /* 1: replaced with address of .got.plt + 8.  */
1817
  0, 0, 0, 0,       /* 2: replaced with address of .got.plt + 4.  */
1818
};
1819
 
1820
/* Sebsequent entries in an absolute procedure linkage table look like
1821
   this.  */
1822
 
1823
static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1824
{
1825
  0xd0, 0x04,   /* mov.l 1f,r0 */
1826
  0x60, 0x02,   /* mov.l @(r0,r12),r0 */
1827
  0xd1, 0x02,   /* mov.l 0f,r1 */
1828
  0x40, 0x2b,   /* jmp @r0 */
1829
  0x60, 0x13,   /*  mov r1,r0 */
1830
  0xd1, 0x03,   /* mov.l 2f,r1 */
1831
  0x40, 0x2b,   /* jmp @r0 */
1832
  0x00, 0x09,   /* nop */
1833
  0, 0, 0, 0,       /* 0: replaced with address of .PLT0.  */
1834
  0, 0, 0, 0,       /* 1: replaced with address of this symbol in .got.  */
1835
  0, 0, 0, 0,       /* 2: replaced with offset into relocation table.  */
1836
};
1837
 
1838
static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1839
{
1840
  0x04, 0xd0,   /* mov.l 1f,r0 */
1841
  0x02, 0x60,   /* mov.l @r0,r0 */
1842
  0x02, 0xd1,   /* mov.l 0f,r1 */
1843
  0x2b, 0x40,   /* jmp @r0 */
1844
  0x13, 0x60,   /*  mov r1,r0 */
1845
  0x03, 0xd1,   /* mov.l 2f,r1 */
1846
  0x2b, 0x40,   /* jmp @r0 */
1847
  0x09, 0x00,   /*  nop */
1848
  0, 0, 0, 0,       /* 0: replaced with address of .PLT0.  */
1849
  0, 0, 0, 0,       /* 1: replaced with address of this symbol in .got.  */
1850
  0, 0, 0, 0,       /* 2: replaced with offset into relocation table.  */
1851
};
1852
 
1853
/* Entries in a PIC procedure linkage table look like this.  */
1854
 
1855
static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1856
{
1857
  0xd0, 0x04,   /* mov.l 1f,r0 */
1858
  0x00, 0xce,   /* mov.l @(r0,r12),r0 */
1859
  0x40, 0x2b,   /* jmp @r0 */
1860
  0x00, 0x09,   /*  nop */
1861
  0x50, 0xc2,   /* mov.l @(8,r12),r0 */
1862
  0xd1, 0x03,   /* mov.l 2f,r1 */
1863
  0x40, 0x2b,   /* jmp @r0 */
1864
  0x50, 0xc1,   /*  mov.l @(4,r12),r0 */
1865
  0x00, 0x09,   /* nop */
1866
  0x00, 0x09,   /* nop */
1867
  0, 0, 0, 0,       /* 1: replaced with address of this symbol in .got.  */
1868
  0, 0, 0, 0    /* 2: replaced with offset into relocation table.  */
1869
};
1870
 
1871
static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1872
{
1873
  0x04, 0xd0,   /* mov.l 1f,r0 */
1874
  0xce, 0x00,   /* mov.l @(r0,r12),r0 */
1875
  0x2b, 0x40,   /* jmp @r0 */
1876
  0x09, 0x00,   /*  nop */
1877
  0xc2, 0x50,   /* mov.l @(8,r12),r0 */
1878
  0x03, 0xd1,   /* mov.l 2f,r1 */
1879
  0x2b, 0x40,   /* jmp @r0 */
1880
  0xc1, 0x50,   /*  mov.l @(4,r12),r0 */
1881
  0x09, 0x00,   /*  nop */
1882
  0x09, 0x00,   /* nop */
1883
  0, 0, 0, 0,       /* 1: replaced with address of this symbol in .got.  */
1884
  0, 0, 0, 0    /* 2: replaced with offset into relocation table.  */
1885
};
1886
 
1887
static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1888
  {
1889
    {
1890
      /* Big-endian non-PIC.  */
1891
      elf_sh_plt0_entry_be,
1892
      ELF_PLT_ENTRY_SIZE,
1893
      { MINUS_ONE, 24, 20 },
1894
      elf_sh_plt_entry_be,
1895
      ELF_PLT_ENTRY_SIZE,
1896
      { 20, 16, 24 },
1897
      8
1898
    },
1899
    {
1900
      /* Little-endian non-PIC.  */
1901
      elf_sh_plt0_entry_le,
1902
      ELF_PLT_ENTRY_SIZE,
1903
      { MINUS_ONE, 24, 20 },
1904
      elf_sh_plt_entry_le,
1905
      ELF_PLT_ENTRY_SIZE,
1906
      { 20, 16, 24 },
1907
      8
1908
    },
1909
  },
1910
  {
1911
    {
1912
      /* Big-endian PIC.  */
1913
      elf_sh_plt0_entry_be,
1914
      ELF_PLT_ENTRY_SIZE,
1915
      { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1916
      elf_sh_pic_plt_entry_be,
1917
      ELF_PLT_ENTRY_SIZE,
1918
      { 20, MINUS_ONE, 24 },
1919
      8
1920
    },
1921
    {
1922
      /* Little-endian PIC.  */
1923
      elf_sh_plt0_entry_le,
1924
      ELF_PLT_ENTRY_SIZE,
1925
      { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1926
      elf_sh_pic_plt_entry_le,
1927
      ELF_PLT_ENTRY_SIZE,
1928
      { 20, MINUS_ONE, 24 },
1929
      8
1930
    },
1931
  }
1932
};
1933
 
1934
#define VXWORKS_PLT_HEADER_SIZE 12
1935
#define VXWORKS_PLT_ENTRY_SIZE 24
1936
 
1937
static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] =
1938
{
1939
  0xd1, 0x01,   /* mov.l @(8,pc),r1 */
1940
  0x61, 0x12,   /* mov.l @r1,r1 */
1941
  0x41, 0x2b,   /* jmp @r1 */
1942
  0x00, 0x09,   /* nop */
1943
  0, 0, 0, 0        /* 0: replaced with _GLOBAL_OFFSET_TABLE+8.  */
1944
};
1945
 
1946
static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] =
1947
{
1948
  0x01, 0xd1,   /* mov.l @(8,pc),r1 */
1949
  0x12, 0x61,   /* mov.l @r1,r1 */
1950
  0x2b, 0x41,   /* jmp @r1 */
1951
  0x09, 0x00,   /* nop */
1952
  0, 0, 0, 0        /* 0: replaced with _GLOBAL_OFFSET_TABLE+8.  */
1953
};
1954
 
1955
static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1956
{
1957
  0xd0, 0x01,   /* mov.l @(8,pc),r0 */
1958
  0x60, 0x02,   /* mov.l @r0,r0 */
1959
  0x40, 0x2b,   /* jmp @r0 */
1960
  0x00, 0x09,   /* nop */
1961
  0, 0, 0, 0,       /* 0: replaced with address of this symbol in .got.  */
1962
  0xd0, 0x01,   /* mov.l @(8,pc),r0 */
1963
  0xa0, 0x00,   /* bra PLT (We need to fix the offset.)  */
1964
  0x00, 0x09,   /* nop */
1965
  0x00, 0x09,   /* nop */
1966
  0, 0, 0, 0,       /* 1: replaced with offset into relocation table.  */
1967
};
1968
 
1969
static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1970
{
1971
  0x01, 0xd0,   /* mov.l @(8,pc),r0 */
1972
  0x02, 0x60,   /* mov.l @r0,r0 */
1973
  0x2b, 0x40,   /* jmp @r0 */
1974
  0x09, 0x00,   /* nop */
1975
  0, 0, 0, 0,       /* 0: replaced with address of this symbol in .got.  */
1976
  0x01, 0xd0,   /* mov.l @(8,pc),r0 */
1977
  0x00, 0xa0,   /* bra PLT (We need to fix the offset.)  */
1978
  0x09, 0x00,   /* nop */
1979
  0x09, 0x00,   /* nop */
1980
  0, 0, 0, 0,       /* 1: replaced with offset into relocation table.  */
1981
};
1982
 
1983
static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1984
{
1985
  0xd0, 0x01,   /* mov.l @(8,pc),r0 */
1986
  0x00, 0xce,   /* mov.l @(r0,r12),r0 */
1987
  0x40, 0x2b,   /* jmp @r0 */
1988
  0x00, 0x09,   /* nop */
1989
  0, 0, 0, 0,       /* 0: replaced with offset of this symbol in .got.  */
1990
  0xd0, 0x01,   /* mov.l @(8,pc),r0 */
1991
  0x51, 0xc2,   /* mov.l @(8,r12),r1 */
1992
  0x41, 0x2b,   /* jmp @r1 */
1993
  0x00, 0x09,   /* nop */
1994
  0, 0, 0, 0,       /* 1: replaced with offset into relocation table.  */
1995
};
1996
 
1997
static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1998
{
1999
  0x01, 0xd0,   /* mov.l @(8,pc),r0 */
2000
  0xce, 0x00,   /* mov.l @(r0,r12),r0 */
2001
  0x2b, 0x40,   /* jmp @r0 */
2002
  0x09, 0x00,   /* nop */
2003
  0, 0, 0, 0,       /* 0: replaced with offset of this symbol in .got.  */
2004
  0x01, 0xd0,   /* mov.l @(8,pc),r0 */
2005
  0xc2, 0x51,   /* mov.l @(8,r12),r1 */
2006
  0x2b, 0x41,   /* jmp @r1 */
2007
  0x09, 0x00,   /* nop */
2008
  0, 0, 0, 0,       /* 1: replaced with offset into relocation table.  */
2009
};
2010
 
2011
static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = {
2012
  {
2013
    {
2014
      /* Big-endian non-PIC.  */
2015
      vxworks_sh_plt0_entry_be,
2016
      VXWORKS_PLT_HEADER_SIZE,
2017
      { MINUS_ONE, MINUS_ONE, 8 },
2018
      vxworks_sh_plt_entry_be,
2019
      VXWORKS_PLT_ENTRY_SIZE,
2020
      { 8, 14, 20 },
2021
      12
2022
    },
2023
    {
2024
      /* Little-endian non-PIC.  */
2025
      vxworks_sh_plt0_entry_le,
2026
      VXWORKS_PLT_HEADER_SIZE,
2027
      { MINUS_ONE, MINUS_ONE, 8 },
2028
      vxworks_sh_plt_entry_le,
2029
      VXWORKS_PLT_ENTRY_SIZE,
2030
      { 8, 14, 20 },
2031
      12
2032
    },
2033
  },
2034
  {
2035
    {
2036
      /* Big-endian PIC.  */
2037
      NULL,
2038
      0,
2039
      { MINUS_ONE, MINUS_ONE, MINUS_ONE },
2040
      vxworks_sh_pic_plt_entry_be,
2041
      VXWORKS_PLT_ENTRY_SIZE,
2042
      { 8, MINUS_ONE, 20 },
2043
      12
2044
    },
2045
    {
2046
      /* Little-endian PIC.  */
2047
      NULL,
2048
      0,
2049
      { MINUS_ONE, MINUS_ONE, MINUS_ONE },
2050
      vxworks_sh_pic_plt_entry_le,
2051
      VXWORKS_PLT_ENTRY_SIZE,
2052
      { 8, MINUS_ONE, 20 },
2053
      12
2054
    },
2055
  }
2056
};
2057
 
2058
/* Return the type of PLT associated with ABFD.  PIC_P is true if
2059
   the object is position-independent.  */
2060
 
2061
static const struct elf_sh_plt_info *
2062
get_plt_info (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean pic_p)
2063
{
2064
  if (vxworks_object_p (abfd))
2065
    return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)];
2066
  return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
2067
}
2068
 
2069
/* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2070
   VALUE is the field's value and CODE_P is true if VALUE refers to code,
2071
   not data.  */
2072
 
2073
inline static void
2074
install_plt_field (bfd *output_bfd, bfd_boolean code_p ATTRIBUTE_UNUSED,
2075
                   unsigned long value, bfd_byte *addr)
2076
{
2077
  bfd_put_32 (output_bfd, value, addr);
2078
}
2079
#endif
2080
 
2081
/* Return the index of the PLT entry at byte offset OFFSET.  */
2082
 
2083
static bfd_vma
2084
get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset)
2085
{
2086
  return (offset - info->plt0_entry_size) / info->symbol_entry_size;
2087
}
2088
 
2089
/* Do the inverse operation.  */
2090
 
2091
static bfd_vma
2092
get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma index)
2093
{
2094
  return info->plt0_entry_size + (index * info->symbol_entry_size);
2095
}
2096
 
2097
/* The sh linker needs to keep track of the number of relocs that it
2098
   decides to copy as dynamic relocs in check_relocs for each symbol.
2099
   This is so that it can later discard them if they are found to be
2100
   unnecessary.  We store the information in a field extending the
2101
   regular ELF linker hash table.  */
2102
 
2103
struct elf_sh_dyn_relocs
2104
{
2105
  struct elf_sh_dyn_relocs *next;
2106
 
2107
  /* The input section of the reloc.  */
2108
  asection *sec;
2109
 
2110
  /* Total number of relocs copied for the input section.  */
2111
  bfd_size_type count;
2112
 
2113
  /* Number of pc-relative relocs copied for the input section.  */
2114
  bfd_size_type pc_count;
2115
};
2116
 
2117
/* sh ELF linker hash entry.  */
2118
 
2119
struct elf_sh_link_hash_entry
2120
{
2121
  struct elf_link_hash_entry root;
2122
 
2123
#ifdef INCLUDE_SHMEDIA
2124
  union
2125
  {
2126
    bfd_signed_vma refcount;
2127
    bfd_vma offset;
2128
  } datalabel_got;
2129
#endif
2130
 
2131
  /* Track dynamic relocs copied for this symbol.  */
2132
  struct elf_sh_dyn_relocs *dyn_relocs;
2133
 
2134
  bfd_signed_vma gotplt_refcount;
2135
 
2136
  enum {
2137
    GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE
2138
  } tls_type;
2139
};
2140
 
2141
#define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2142
 
2143
struct sh_elf_obj_tdata
2144
{
2145
  struct elf_obj_tdata root;
2146
 
2147
  /* tls_type for each local got entry.  */
2148
  char *local_got_tls_type;
2149
};
2150
 
2151
#define sh_elf_tdata(abfd) \
2152
  ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2153
 
2154
#define sh_elf_local_got_tls_type(abfd) \
2155
  (sh_elf_tdata (abfd)->local_got_tls_type)
2156
 
2157
#define is_sh_elf(bfd) \
2158
  (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2159
   && elf_tdata (bfd) != NULL \
2160
   && elf_object_id (bfd) == SH_ELF_TDATA)
2161
 
2162
/* Override the generic function because we need to store sh_elf_obj_tdata
2163
   as the specific tdata.  */
2164
 
2165
static bfd_boolean
2166
sh_elf_mkobject (bfd *abfd)
2167
{
2168
  return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata),
2169
                                  SH_ELF_TDATA);
2170
}
2171
 
2172
/* sh ELF linker hash table.  */
2173
 
2174
struct elf_sh_link_hash_table
2175
{
2176
  struct elf_link_hash_table root;
2177
 
2178
  /* Short-cuts to get to dynamic linker sections.  */
2179
  asection *sgot;
2180
  asection *sgotplt;
2181
  asection *srelgot;
2182
  asection *splt;
2183
  asection *srelplt;
2184
  asection *sdynbss;
2185
  asection *srelbss;
2186
 
2187
  /* The (unloaded but important) VxWorks .rela.plt.unloaded section.  */
2188
  asection *srelplt2;
2189
 
2190
  /* Small local sym to section mapping cache.  */
2191
  struct sym_sec_cache sym_sec;
2192
 
2193
  /* A counter or offset to track a TLS got entry.  */
2194
  union
2195
    {
2196
      bfd_signed_vma refcount;
2197
      bfd_vma offset;
2198
    } tls_ldm_got;
2199
 
2200
  /* The type of PLT to use.  */
2201
  const struct elf_sh_plt_info *plt_info;
2202
 
2203
  /* True if the target system is VxWorks.  */
2204
  bfd_boolean vxworks_p;
2205
};
2206
 
2207
/* Traverse an sh ELF linker hash table.  */
2208
 
2209
#define sh_elf_link_hash_traverse(table, func, info)                    \
2210
  (elf_link_hash_traverse                                               \
2211
   (&(table)->root,                                                     \
2212
    (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2213
    (info)))
2214
 
2215
/* Get the sh ELF linker hash table from a link_info structure.  */
2216
 
2217
#define sh_elf_hash_table(p) \
2218
  ((struct elf_sh_link_hash_table *) ((p)->hash))
2219
 
2220
/* Create an entry in an sh ELF linker hash table.  */
2221
 
2222
static struct bfd_hash_entry *
2223
sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2224
                          struct bfd_hash_table *table,
2225
                          const char *string)
2226
{
2227
  struct elf_sh_link_hash_entry *ret =
2228
    (struct elf_sh_link_hash_entry *) entry;
2229
 
2230
  /* Allocate the structure if it has not already been allocated by a
2231
     subclass.  */
2232
  if (ret == (struct elf_sh_link_hash_entry *) NULL)
2233
    ret = ((struct elf_sh_link_hash_entry *)
2234
           bfd_hash_allocate (table,
2235
                              sizeof (struct elf_sh_link_hash_entry)));
2236
  if (ret == (struct elf_sh_link_hash_entry *) NULL)
2237
    return (struct bfd_hash_entry *) ret;
2238
 
2239
  /* Call the allocation method of the superclass.  */
2240
  ret = ((struct elf_sh_link_hash_entry *)
2241
         _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2242
                                     table, string));
2243
  if (ret != (struct elf_sh_link_hash_entry *) NULL)
2244
    {
2245
      ret->dyn_relocs = NULL;
2246
      ret->gotplt_refcount = 0;
2247
#ifdef INCLUDE_SHMEDIA
2248
      ret->datalabel_got.refcount = ret->root.got.refcount;
2249
#endif
2250
      ret->tls_type = GOT_UNKNOWN;
2251
    }
2252
 
2253
  return (struct bfd_hash_entry *) ret;
2254
}
2255
 
2256
/* Create an sh ELF linker hash table.  */
2257
 
2258
static struct bfd_link_hash_table *
2259
sh_elf_link_hash_table_create (bfd *abfd)
2260
{
2261
  struct elf_sh_link_hash_table *ret;
2262
  bfd_size_type amt = sizeof (struct elf_sh_link_hash_table);
2263
 
2264
  ret = (struct elf_sh_link_hash_table *) bfd_malloc (amt);
2265
  if (ret == (struct elf_sh_link_hash_table *) NULL)
2266
    return NULL;
2267
 
2268
  if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2269
                                      sh_elf_link_hash_newfunc,
2270
                                      sizeof (struct elf_sh_link_hash_entry)))
2271
    {
2272
      free (ret);
2273
      return NULL;
2274
    }
2275
 
2276
  ret->sgot = NULL;
2277
  ret->sgotplt = NULL;
2278
  ret->srelgot = NULL;
2279
  ret->splt = NULL;
2280
  ret->srelplt = NULL;
2281
  ret->sdynbss = NULL;
2282
  ret->srelbss = NULL;
2283
  ret->srelplt2 = NULL;
2284
  ret->sym_sec.abfd = NULL;
2285
  ret->tls_ldm_got.refcount = 0;
2286
  ret->plt_info = NULL;
2287
  ret->vxworks_p = vxworks_object_p (abfd);
2288
 
2289
  return &ret->root.root;
2290
}
2291
 
2292
/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2293
   shortcuts to them in our hash table.  */
2294
 
2295
static bfd_boolean
2296
create_got_section (bfd *dynobj, struct bfd_link_info *info)
2297
{
2298
  struct elf_sh_link_hash_table *htab;
2299
 
2300
  if (! _bfd_elf_create_got_section (dynobj, info))
2301
    return FALSE;
2302
 
2303
  htab = sh_elf_hash_table (info);
2304
  htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2305
  htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2306
  if (! htab->sgot || ! htab->sgotplt)
2307
    abort ();
2308
 
2309
  htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
2310
                                               (SEC_ALLOC | SEC_LOAD
2311
                                                | SEC_HAS_CONTENTS
2312
                                                | SEC_IN_MEMORY
2313
                                                | SEC_LINKER_CREATED
2314
                                                | SEC_READONLY));
2315
  if (htab->srelgot == NULL
2316
      || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2317
    return FALSE;
2318
  return TRUE;
2319
}
2320
 
2321
/* Create dynamic sections when linking against a dynamic object.  */
2322
 
2323
static bfd_boolean
2324
sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2325
{
2326
  struct elf_sh_link_hash_table *htab;
2327
  flagword flags, pltflags;
2328
  register asection *s;
2329
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2330
  int ptralign = 0;
2331
 
2332
  switch (bed->s->arch_size)
2333
    {
2334
    case 32:
2335
      ptralign = 2;
2336
      break;
2337
 
2338
    case 64:
2339
      ptralign = 3;
2340
      break;
2341
 
2342
    default:
2343
      bfd_set_error (bfd_error_bad_value);
2344
      return FALSE;
2345
    }
2346
 
2347
  htab = sh_elf_hash_table (info);
2348
  if (htab->root.dynamic_sections_created)
2349
    return TRUE;
2350
 
2351
  /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2352
     .rel[a].bss sections.  */
2353
 
2354
  flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2355
           | SEC_LINKER_CREATED);
2356
 
2357
  pltflags = flags;
2358
  pltflags |= SEC_CODE;
2359
  if (bed->plt_not_loaded)
2360
    pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2361
  if (bed->plt_readonly)
2362
    pltflags |= SEC_READONLY;
2363
 
2364
  s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
2365
  htab->splt = s;
2366
  if (s == NULL
2367
      || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2368
    return FALSE;
2369
 
2370
  if (bed->want_plt_sym)
2371
    {
2372
      /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2373
         .plt section.  */
2374
      struct elf_link_hash_entry *h;
2375
      struct bfd_link_hash_entry *bh = NULL;
2376
 
2377
      if (! (_bfd_generic_link_add_one_symbol
2378
             (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2379
              (bfd_vma) 0, (const char *) NULL, FALSE,
2380
              get_elf_backend_data (abfd)->collect, &bh)))
2381
        return FALSE;
2382
 
2383
      h = (struct elf_link_hash_entry *) bh;
2384
      h->def_regular = 1;
2385
      h->type = STT_OBJECT;
2386
      htab->root.hplt = h;
2387
 
2388
      if (info->shared
2389
          && ! bfd_elf_link_record_dynamic_symbol (info, h))
2390
        return FALSE;
2391
    }
2392
 
2393
  s = bfd_make_section_with_flags (abfd,
2394
                                   bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
2395
                                   flags | SEC_READONLY);
2396
  htab->srelplt = s;
2397
  if (s == NULL
2398
      || ! bfd_set_section_alignment (abfd, s, ptralign))
2399
    return FALSE;
2400
 
2401
  if (htab->sgot == NULL
2402
      && !create_got_section (abfd, info))
2403
    return FALSE;
2404
 
2405
  {
2406
    const char *secname;
2407
    char *relname;
2408
    flagword secflags;
2409
    asection *sec;
2410
 
2411
    for (sec = abfd->sections; sec; sec = sec->next)
2412
      {
2413
        secflags = bfd_get_section_flags (abfd, sec);
2414
        if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
2415
            || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
2416
          continue;
2417
        secname = bfd_get_section_name (abfd, sec);
2418
        relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6);
2419
        strcpy (relname, ".rela");
2420
        strcat (relname, secname);
2421
        if (bfd_get_section_by_name (abfd, secname))
2422
          continue;
2423
        s = bfd_make_section_with_flags (abfd, relname,
2424
                                         flags | SEC_READONLY);
2425
        if (s == NULL
2426
            || ! bfd_set_section_alignment (abfd, s, ptralign))
2427
          return FALSE;
2428
      }
2429
  }
2430
 
2431
  if (bed->want_dynbss)
2432
    {
2433
      /* The .dynbss section is a place to put symbols which are defined
2434
         by dynamic objects, are referenced by regular objects, and are
2435
         not functions.  We must allocate space for them in the process
2436
         image and use a R_*_COPY reloc to tell the dynamic linker to
2437
         initialize them at run time.  The linker script puts the .dynbss
2438
         section into the .bss section of the final image.  */
2439
      s = bfd_make_section_with_flags (abfd, ".dynbss",
2440
                                       SEC_ALLOC | SEC_LINKER_CREATED);
2441
      htab->sdynbss = s;
2442
      if (s == NULL)
2443
        return FALSE;
2444
 
2445
      /* The .rel[a].bss section holds copy relocs.  This section is not
2446
         normally needed.  We need to create it here, though, so that the
2447
         linker will map it to an output section.  We can't just create it
2448
         only if we need it, because we will not know whether we need it
2449
         until we have seen all the input files, and the first time the
2450
         main linker code calls BFD after examining all the input files
2451
         (size_dynamic_sections) the input sections have already been
2452
         mapped to the output sections.  If the section turns out not to
2453
         be needed, we can discard it later.  We will never need this
2454
         section when generating a shared object, since they do not use
2455
         copy relocs.  */
2456
      if (! info->shared)
2457
        {
2458
          s = bfd_make_section_with_flags (abfd,
2459
                                           (bed->default_use_rela_p
2460
                                            ? ".rela.bss" : ".rel.bss"),
2461
                                           flags | SEC_READONLY);
2462
          htab->srelbss = s;
2463
          if (s == NULL
2464
              || ! bfd_set_section_alignment (abfd, s, ptralign))
2465
            return FALSE;
2466
        }
2467
    }
2468
 
2469
  if (htab->vxworks_p)
2470
    {
2471
      if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2472
        return FALSE;
2473
    }
2474
 
2475
  return TRUE;
2476
}
2477
 
2478
/* Adjust a symbol defined by a dynamic object and referenced by a
2479
   regular object.  The current definition is in some section of the
2480
   dynamic object, but we're not including those sections.  We have to
2481
   change the definition to something the rest of the link can
2482
   understand.  */
2483
 
2484
static bfd_boolean
2485
sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2486
                              struct elf_link_hash_entry *h)
2487
{
2488
  struct elf_sh_link_hash_table *htab;
2489
  struct elf_sh_link_hash_entry *eh;
2490
  struct elf_sh_dyn_relocs *p;
2491
  asection *s;
2492
 
2493
  htab = sh_elf_hash_table (info);
2494
 
2495
  /* Make sure we know what is going on here.  */
2496
  BFD_ASSERT (htab->root.dynobj != NULL
2497
              && (h->needs_plt
2498
                  || h->u.weakdef != NULL
2499
                  || (h->def_dynamic
2500
                      && h->ref_regular
2501
                      && !h->def_regular)));
2502
 
2503
  /* If this is a function, put it in the procedure linkage table.  We
2504
     will fill in the contents of the procedure linkage table later,
2505
     when we know the address of the .got section.  */
2506
  if (h->type == STT_FUNC
2507
      || h->needs_plt)
2508
    {
2509
      if (h->plt.refcount <= 0
2510
          || SYMBOL_CALLS_LOCAL (info, h)
2511
          || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2512
              && h->root.type == bfd_link_hash_undefweak))
2513
        {
2514
          /* This case can occur if we saw a PLT reloc in an input
2515
             file, but the symbol was never referred to by a dynamic
2516
             object.  In such a case, we don't actually need to build
2517
             a procedure linkage table, and we can just do a REL32
2518
             reloc instead.  */
2519
          h->plt.offset = (bfd_vma) -1;
2520
          h->needs_plt = 0;
2521
        }
2522
 
2523
      return TRUE;
2524
    }
2525
  else
2526
    h->plt.offset = (bfd_vma) -1;
2527
 
2528
  /* If this is a weak symbol, and there is a real definition, the
2529
     processor independent code will have arranged for us to see the
2530
     real definition first, and we can just use the same value.  */
2531
  if (h->u.weakdef != NULL)
2532
    {
2533
      BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2534
                  || h->u.weakdef->root.type == bfd_link_hash_defweak);
2535
      h->root.u.def.section = h->u.weakdef->root.u.def.section;
2536
      h->root.u.def.value = h->u.weakdef->root.u.def.value;
2537
      if (info->nocopyreloc)
2538
        h->non_got_ref = h->u.weakdef->non_got_ref;
2539
      return TRUE;
2540
    }
2541
 
2542
  /* This is a reference to a symbol defined by a dynamic object which
2543
     is not a function.  */
2544
 
2545
  /* If we are creating a shared library, we must presume that the
2546
     only references to the symbol are via the global offset table.
2547
     For such cases we need not do anything here; the relocations will
2548
     be handled correctly by relocate_section.  */
2549
  if (info->shared)
2550
    return TRUE;
2551
 
2552
  /* If there are no references to this symbol that do not use the
2553
     GOT, we don't need to generate a copy reloc.  */
2554
  if (!h->non_got_ref)
2555
    return TRUE;
2556
 
2557
  /* If -z nocopyreloc was given, we won't generate them either.  */
2558
  if (info->nocopyreloc)
2559
    {
2560
      h->non_got_ref = 0;
2561
      return TRUE;
2562
    }
2563
 
2564
  eh = (struct elf_sh_link_hash_entry *) h;
2565
  for (p = eh->dyn_relocs; p != NULL; p = p->next)
2566
    {
2567
      s = p->sec->output_section;
2568
      if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2569
        break;
2570
    }
2571
 
2572
  /* If we didn't find any dynamic relocs in sections which needs the
2573
     copy reloc, then we'll be keeping the dynamic relocs and avoiding
2574
     the copy reloc.  */
2575
  if (p == NULL)
2576
    {
2577
      h->non_got_ref = 0;
2578
      return TRUE;
2579
    }
2580
 
2581
  if (h->size == 0)
2582
    {
2583
      (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2584
                             h->root.root.string);
2585
      return TRUE;
2586
    }
2587
 
2588
  /* We must allocate the symbol in our .dynbss section, which will
2589
     become part of the .bss section of the executable.  There will be
2590
     an entry for this symbol in the .dynsym section.  The dynamic
2591
     object will contain position independent code, so all references
2592
     from the dynamic object to this symbol will go through the global
2593
     offset table.  The dynamic linker will use the .dynsym entry to
2594
     determine the address it must put in the global offset table, so
2595
     both the dynamic object and the regular object will refer to the
2596
     same memory location for the variable.  */
2597
 
2598
  s = htab->sdynbss;
2599
  BFD_ASSERT (s != NULL);
2600
 
2601
  /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2602
     copy the initial value out of the dynamic object and into the
2603
     runtime process image.  We need to remember the offset into the
2604
     .rela.bss section we are going to use.  */
2605
  if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2606
    {
2607
      asection *srel;
2608
 
2609
      srel = htab->srelbss;
2610
      BFD_ASSERT (srel != NULL);
2611
      srel->size += sizeof (Elf32_External_Rela);
2612
      h->needs_copy = 1;
2613
    }
2614
 
2615
  return _bfd_elf_adjust_dynamic_copy (h, s);
2616
}
2617
 
2618
/* Allocate space in .plt, .got and associated reloc sections for
2619
   dynamic relocs.  */
2620
 
2621
static bfd_boolean
2622
allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2623
{
2624
  struct bfd_link_info *info;
2625
  struct elf_sh_link_hash_table *htab;
2626
  struct elf_sh_link_hash_entry *eh;
2627
  struct elf_sh_dyn_relocs *p;
2628
 
2629
  if (h->root.type == bfd_link_hash_indirect)
2630
    return TRUE;
2631
 
2632
  if (h->root.type == bfd_link_hash_warning)
2633
    /* When warning symbols are created, they **replace** the "real"
2634
       entry in the hash table, thus we never get to see the real
2635
       symbol in a hash traversal.  So look at it now.  */
2636
    h = (struct elf_link_hash_entry *) h->root.u.i.link;
2637
 
2638
  info = (struct bfd_link_info *) inf;
2639
  htab = sh_elf_hash_table (info);
2640
 
2641
  eh = (struct elf_sh_link_hash_entry *) h;
2642
  if ((h->got.refcount > 0
2643
       || h->forced_local)
2644
      && eh->gotplt_refcount > 0)
2645
    {
2646
      /* The symbol has been forced local, or we have some direct got refs,
2647
         so treat all the gotplt refs as got refs. */
2648
      h->got.refcount += eh->gotplt_refcount;
2649
      if (h->plt.refcount >= eh->gotplt_refcount)
2650
        h->plt.refcount -= eh->gotplt_refcount;
2651
    }
2652
 
2653
  if (htab->root.dynamic_sections_created
2654
      && h->plt.refcount > 0
2655
      && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2656
          || h->root.type != bfd_link_hash_undefweak))
2657
    {
2658
      /* Make sure this symbol is output as a dynamic symbol.
2659
         Undefined weak syms won't yet be marked as dynamic.  */
2660
      if (h->dynindx == -1
2661
          && !h->forced_local)
2662
        {
2663
          if (! bfd_elf_link_record_dynamic_symbol (info, h))
2664
            return FALSE;
2665
        }
2666
 
2667
      if (info->shared
2668
          || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2669
        {
2670
          asection *s = htab->splt;
2671
 
2672
          /* If this is the first .plt entry, make room for the special
2673
             first entry.  */
2674
          if (s->size == 0)
2675
            s->size += htab->plt_info->plt0_entry_size;
2676
 
2677
          h->plt.offset = s->size;
2678
 
2679
          /* If this symbol is not defined in a regular file, and we are
2680
             not generating a shared library, then set the symbol to this
2681
             location in the .plt.  This is required to make function
2682
             pointers compare as equal between the normal executable and
2683
             the shared library.  */
2684
          if (! info->shared
2685
              && !h->def_regular)
2686
            {
2687
              h->root.u.def.section = s;
2688
              h->root.u.def.value = h->plt.offset;
2689
            }
2690
 
2691
          /* Make room for this entry.  */
2692
          s->size += htab->plt_info->symbol_entry_size;
2693
 
2694
          /* We also need to make an entry in the .got.plt section, which
2695
             will be placed in the .got section by the linker script.  */
2696
          htab->sgotplt->size += 4;
2697
 
2698
          /* We also need to make an entry in the .rel.plt section.  */
2699
          htab->srelplt->size += sizeof (Elf32_External_Rela);
2700
 
2701
          if (htab->vxworks_p && !info->shared)
2702
            {
2703
              /* VxWorks executables have a second set of relocations
2704
                 for each PLT entry.  They go in a separate relocation
2705
                 section, which is processed by the kernel loader.  */
2706
 
2707
              /* There is a relocation for the initial PLT entry:
2708
                 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_.  */
2709
              if (h->plt.offset == htab->plt_info->plt0_entry_size)
2710
                htab->srelplt2->size += sizeof (Elf32_External_Rela);
2711
 
2712
              /* There are two extra relocations for each subsequent
2713
                 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2714
                 and an R_SH_DIR32 relocation for the PLT entry.  */
2715
              htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2716
            }
2717
        }
2718
      else
2719
        {
2720
          h->plt.offset = (bfd_vma) -1;
2721
          h->needs_plt = 0;
2722
        }
2723
    }
2724
  else
2725
    {
2726
      h->plt.offset = (bfd_vma) -1;
2727
      h->needs_plt = 0;
2728
    }
2729
 
2730
  if (h->got.refcount > 0)
2731
    {
2732
      asection *s;
2733
      bfd_boolean dyn;
2734
      int tls_type = sh_elf_hash_entry (h)->tls_type;
2735
 
2736
      /* Make sure this symbol is output as a dynamic symbol.
2737
         Undefined weak syms won't yet be marked as dynamic.  */
2738
      if (h->dynindx == -1
2739
          && !h->forced_local)
2740
        {
2741
          if (! bfd_elf_link_record_dynamic_symbol (info, h))
2742
            return FALSE;
2743
        }
2744
 
2745
      s = htab->sgot;
2746
      h->got.offset = s->size;
2747
      s->size += 4;
2748
      /* R_SH_TLS_GD needs 2 consecutive GOT slots.  */
2749
      if (tls_type == GOT_TLS_GD)
2750
        s->size += 4;
2751
      dyn = htab->root.dynamic_sections_created;
2752
      /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2753
         R_SH_TLS_GD needs one if local symbol and two if global.  */
2754
      if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2755
          || (tls_type == GOT_TLS_IE && dyn))
2756
        htab->srelgot->size += sizeof (Elf32_External_Rela);
2757
      else if (tls_type == GOT_TLS_GD)
2758
        htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2759
      else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2760
                || h->root.type != bfd_link_hash_undefweak)
2761
               && (info->shared
2762
                   || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2763
        htab->srelgot->size += sizeof (Elf32_External_Rela);
2764
    }
2765
  else
2766
    h->got.offset = (bfd_vma) -1;
2767
 
2768
#ifdef INCLUDE_SHMEDIA
2769
  if (eh->datalabel_got.refcount > 0)
2770
    {
2771
      asection *s;
2772
      bfd_boolean dyn;
2773
 
2774
      /* Make sure this symbol is output as a dynamic symbol.
2775
         Undefined weak syms won't yet be marked as dynamic.  */
2776
      if (h->dynindx == -1
2777
          && !h->forced_local)
2778
        {
2779
          if (! bfd_elf_link_record_dynamic_symbol (info, h))
2780
            return FALSE;
2781
        }
2782
 
2783
      s = htab->sgot;
2784
      eh->datalabel_got.offset = s->size;
2785
      s->size += 4;
2786
      dyn = htab->root.dynamic_sections_created;
2787
      if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2788
        htab->srelgot->size += sizeof (Elf32_External_Rela);
2789
    }
2790
  else
2791
    eh->datalabel_got.offset = (bfd_vma) -1;
2792
#endif
2793
 
2794
  if (eh->dyn_relocs == NULL)
2795
    return TRUE;
2796
 
2797
  /* In the shared -Bsymbolic case, discard space allocated for
2798
     dynamic pc-relative relocs against symbols which turn out to be
2799
     defined in regular objects.  For the normal shared case, discard
2800
     space for pc-relative relocs that have become local due to symbol
2801
     visibility changes.  */
2802
 
2803
  if (info->shared)
2804
    {
2805
      if (SYMBOL_CALLS_LOCAL (info, h))
2806
        {
2807
          struct elf_sh_dyn_relocs **pp;
2808
 
2809
          for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2810
            {
2811
              p->count -= p->pc_count;
2812
              p->pc_count = 0;
2813
              if (p->count == 0)
2814
                *pp = p->next;
2815
              else
2816
                pp = &p->next;
2817
            }
2818
        }
2819
 
2820
      if (htab->vxworks_p)
2821
        {
2822
          struct elf_sh_dyn_relocs **pp;
2823
 
2824
          for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2825
            {
2826
              if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2827
                *pp = p->next;
2828
              else
2829
                pp = &p->next;
2830
            }
2831
        }
2832
 
2833
      /* Also discard relocs on undefined weak syms with non-default
2834
         visibility.  */
2835
      if (eh->dyn_relocs != NULL
2836
          && h->root.type == bfd_link_hash_undefweak)
2837
        {
2838
          if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2839
            eh->dyn_relocs = NULL;
2840
 
2841
          /* Make sure undefined weak symbols are output as a dynamic
2842
             symbol in PIEs.  */
2843
          else if (h->dynindx == -1
2844
                   && !h->forced_local)
2845
            {
2846
              if (! bfd_elf_link_record_dynamic_symbol (info, h))
2847
                return FALSE;
2848
            }
2849
        }
2850
    }
2851
  else
2852
    {
2853
      /* For the non-shared case, discard space for relocs against
2854
         symbols which turn out to need copy relocs or are not
2855
         dynamic.  */
2856
 
2857
      if (!h->non_got_ref
2858
          && ((h->def_dynamic
2859
               && !h->def_regular)
2860
              || (htab->root.dynamic_sections_created
2861
                  && (h->root.type == bfd_link_hash_undefweak
2862
                      || h->root.type == bfd_link_hash_undefined))))
2863
        {
2864
          /* Make sure this symbol is output as a dynamic symbol.
2865
             Undefined weak syms won't yet be marked as dynamic.  */
2866
          if (h->dynindx == -1
2867
              && !h->forced_local)
2868
            {
2869
              if (! bfd_elf_link_record_dynamic_symbol (info, h))
2870
                return FALSE;
2871
            }
2872
 
2873
          /* If that succeeded, we know we'll be keeping all the
2874
             relocs.  */
2875
          if (h->dynindx != -1)
2876
            goto keep;
2877
        }
2878
 
2879
      eh->dyn_relocs = NULL;
2880
 
2881
    keep: ;
2882
    }
2883
 
2884
  /* Finally, allocate space.  */
2885
  for (p = eh->dyn_relocs; p != NULL; p = p->next)
2886
    {
2887
      asection *sreloc = elf_section_data (p->sec)->sreloc;
2888
      sreloc->size += p->count * sizeof (Elf32_External_Rela);
2889
    }
2890
 
2891
  return TRUE;
2892
}
2893
 
2894
/* Find any dynamic relocs that apply to read-only sections.  */
2895
 
2896
static bfd_boolean
2897
readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2898
{
2899
  struct elf_sh_link_hash_entry *eh;
2900
  struct elf_sh_dyn_relocs *p;
2901
 
2902
  if (h->root.type == bfd_link_hash_warning)
2903
    h = (struct elf_link_hash_entry *) h->root.u.i.link;
2904
 
2905
  eh = (struct elf_sh_link_hash_entry *) h;
2906
  for (p = eh->dyn_relocs; p != NULL; p = p->next)
2907
    {
2908
      asection *s = p->sec->output_section;
2909
 
2910
      if (s != NULL && (s->flags & SEC_READONLY) != 0)
2911
        {
2912
          struct bfd_link_info *info = (struct bfd_link_info *) inf;
2913
 
2914
          info->flags |= DF_TEXTREL;
2915
 
2916
          /* Not an error, just cut short the traversal.  */
2917
          return FALSE;
2918
        }
2919
    }
2920
  return TRUE;
2921
}
2922
 
2923
/* This function is called after all the input files have been read,
2924
   and the input sections have been assigned to output sections.
2925
   It's a convenient place to determine the PLT style.  */
2926
 
2927
static bfd_boolean
2928
sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2929
{
2930
  sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd, info->shared);
2931
  return TRUE;
2932
}
2933
 
2934
/* Set the sizes of the dynamic sections.  */
2935
 
2936
static bfd_boolean
2937
sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2938
                              struct bfd_link_info *info)
2939
{
2940
  struct elf_sh_link_hash_table *htab;
2941
  bfd *dynobj;
2942
  asection *s;
2943
  bfd_boolean relocs;
2944
  bfd *ibfd;
2945
 
2946
  htab = sh_elf_hash_table (info);
2947
  dynobj = htab->root.dynobj;
2948
  BFD_ASSERT (dynobj != NULL);
2949
 
2950
  if (htab->root.dynamic_sections_created)
2951
    {
2952
      /* Set the contents of the .interp section to the interpreter.  */
2953
      if (info->executable)
2954
        {
2955
          s = bfd_get_section_by_name (dynobj, ".interp");
2956
          BFD_ASSERT (s != NULL);
2957
          s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2958
          s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2959
        }
2960
    }
2961
 
2962
  /* Set up .got offsets for local syms, and space for local dynamic
2963
     relocs.  */
2964
  for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2965
    {
2966
      bfd_signed_vma *local_got;
2967
      bfd_signed_vma *end_local_got;
2968
      char *local_tls_type;
2969
      bfd_size_type locsymcount;
2970
      Elf_Internal_Shdr *symtab_hdr;
2971
      asection *srel;
2972
 
2973
      if (! is_sh_elf (ibfd))
2974
        continue;
2975
 
2976
      for (s = ibfd->sections; s != NULL; s = s->next)
2977
        {
2978
          struct elf_sh_dyn_relocs *p;
2979
 
2980
          for (p = ((struct elf_sh_dyn_relocs *)
2981
                    elf_section_data (s)->local_dynrel);
2982
               p != NULL;
2983
               p = p->next)
2984
            {
2985
              if (! bfd_is_abs_section (p->sec)
2986
                  && bfd_is_abs_section (p->sec->output_section))
2987
                {
2988
                  /* Input section has been discarded, either because
2989
                     it is a copy of a linkonce section or due to
2990
                     linker script /DISCARD/, so we'll be discarding
2991
                     the relocs too.  */
2992
                }
2993
              else if (htab->vxworks_p
2994
                       && strcmp (p->sec->output_section->name,
2995
                                  ".tls_vars") == 0)
2996
                {
2997
                  /* Relocations in vxworks .tls_vars sections are
2998
                     handled specially by the loader.  */
2999
                }
3000
              else if (p->count != 0)
3001
                {
3002
                  srel = elf_section_data (p->sec)->sreloc;
3003
                  srel->size += p->count * sizeof (Elf32_External_Rela);
3004
                  if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3005
                    info->flags |= DF_TEXTREL;
3006
                }
3007
            }
3008
        }
3009
 
3010
      local_got = elf_local_got_refcounts (ibfd);
3011
      if (!local_got)
3012
        continue;
3013
 
3014
      symtab_hdr = &elf_symtab_hdr (ibfd);
3015
      locsymcount = symtab_hdr->sh_info;
3016
#ifdef INCLUDE_SHMEDIA
3017
      /* Count datalabel local GOT.  */
3018
      locsymcount *= 2;
3019
#endif
3020
      end_local_got = local_got + locsymcount;
3021
      local_tls_type = sh_elf_local_got_tls_type (ibfd);
3022
      s = htab->sgot;
3023
      srel = htab->srelgot;
3024
      for (; local_got < end_local_got; ++local_got)
3025
        {
3026
          if (*local_got > 0)
3027
            {
3028
              *local_got = s->size;
3029
              s->size += 4;
3030
              if (*local_tls_type == GOT_TLS_GD)
3031
                s->size += 4;
3032
              if (info->shared)
3033
                srel->size += sizeof (Elf32_External_Rela);
3034
            }
3035
          else
3036
            *local_got = (bfd_vma) -1;
3037
          ++local_tls_type;
3038
        }
3039
    }
3040
 
3041
  if (htab->tls_ldm_got.refcount > 0)
3042
    {
3043
      /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3044
         relocs.  */
3045
      htab->tls_ldm_got.offset = htab->sgot->size;
3046
      htab->sgot->size += 8;
3047
      htab->srelgot->size += sizeof (Elf32_External_Rela);
3048
    }
3049
  else
3050
    htab->tls_ldm_got.offset = -1;
3051
 
3052
  /* Allocate global sym .plt and .got entries, and space for global
3053
     sym dynamic relocs.  */
3054
  elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3055
 
3056
  /* We now have determined the sizes of the various dynamic sections.
3057
     Allocate memory for them.  */
3058
  relocs = FALSE;
3059
  for (s = dynobj->sections; s != NULL; s = s->next)
3060
    {
3061
      if ((s->flags & SEC_LINKER_CREATED) == 0)
3062
        continue;
3063
 
3064
      if (s == htab->splt
3065
          || s == htab->sgot
3066
          || s == htab->sgotplt
3067
          || s == htab->sdynbss)
3068
        {
3069
          /* Strip this section if we don't need it; see the
3070
             comment below.  */
3071
        }
3072
      else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
3073
        {
3074
          if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2)
3075
            relocs = TRUE;
3076
 
3077
          /* We use the reloc_count field as a counter if we need
3078
             to copy relocs into the output file.  */
3079
          s->reloc_count = 0;
3080
        }
3081
      else
3082
        {
3083
          /* It's not one of our sections, so don't allocate space.  */
3084
          continue;
3085
        }
3086
 
3087
      if (s->size == 0)
3088
        {
3089
          /* If we don't need this section, strip it from the
3090
             output file.  This is mostly to handle .rela.bss and
3091
             .rela.plt.  We must create both sections in
3092
             create_dynamic_sections, because they must be created
3093
             before the linker maps input sections to output
3094
             sections.  The linker does that before
3095
             adjust_dynamic_symbol is called, and it is that
3096
             function which decides whether anything needs to go
3097
             into these sections.  */
3098
 
3099
          s->flags |= SEC_EXCLUDE;
3100
          continue;
3101
        }
3102
 
3103
      if ((s->flags & SEC_HAS_CONTENTS) == 0)
3104
        continue;
3105
 
3106
      /* Allocate memory for the section contents.  We use bfd_zalloc
3107
         here in case unused entries are not reclaimed before the
3108
         section's contents are written out.  This should not happen,
3109
         but this way if it does, we get a R_SH_NONE reloc instead
3110
         of garbage.  */
3111
      s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3112
      if (s->contents == NULL)
3113
        return FALSE;
3114
    }
3115
 
3116
  if (htab->root.dynamic_sections_created)
3117
    {
3118
      /* Add some entries to the .dynamic section.  We fill in the
3119
         values later, in sh_elf_finish_dynamic_sections, but we
3120
         must add the entries now so that we get the correct size for
3121
         the .dynamic section.  The DT_DEBUG entry is filled in by the
3122
         dynamic linker and used by the debugger.  */
3123
#define add_dynamic_entry(TAG, VAL) \
3124
  _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3125
 
3126
      if (info->executable)
3127
        {
3128
          if (! add_dynamic_entry (DT_DEBUG, 0))
3129
            return FALSE;
3130
        }
3131
 
3132
      if (htab->splt->size != 0)
3133
        {
3134
          if (! add_dynamic_entry (DT_PLTGOT, 0)
3135
              || ! add_dynamic_entry (DT_PLTRELSZ, 0)
3136
              || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
3137
              || ! add_dynamic_entry (DT_JMPREL, 0))
3138
            return FALSE;
3139
        }
3140
 
3141
      if (relocs)
3142
        {
3143
          if (! add_dynamic_entry (DT_RELA, 0)
3144
              || ! add_dynamic_entry (DT_RELASZ, 0)
3145
              || ! add_dynamic_entry (DT_RELAENT,
3146
                                      sizeof (Elf32_External_Rela)))
3147
            return FALSE;
3148
 
3149
          /* If any dynamic relocs apply to a read-only section,
3150
             then we need a DT_TEXTREL entry.  */
3151
          if ((info->flags & DF_TEXTREL) == 0)
3152
            elf_link_hash_traverse (&htab->root, readonly_dynrelocs, info);
3153
 
3154
          if ((info->flags & DF_TEXTREL) != 0)
3155
            {
3156
              if (! add_dynamic_entry (DT_TEXTREL, 0))
3157
                return FALSE;
3158
            }
3159
        }
3160
      if (htab->vxworks_p
3161
          && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3162
        return FALSE;
3163
    }
3164
#undef add_dynamic_entry
3165
 
3166
  return TRUE;
3167
}
3168
 
3169
/* Relocate an SH ELF section.  */
3170
 
3171
static bfd_boolean
3172
sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3173
                         bfd *input_bfd, asection *input_section,
3174
                         bfd_byte *contents, Elf_Internal_Rela *relocs,
3175
                         Elf_Internal_Sym *local_syms,
3176
                         asection **local_sections)
3177
{
3178
  struct elf_sh_link_hash_table *htab;
3179
  Elf_Internal_Shdr *symtab_hdr;
3180
  struct elf_link_hash_entry **sym_hashes;
3181
  Elf_Internal_Rela *rel, *relend;
3182
  bfd *dynobj;
3183
  bfd_vma *local_got_offsets;
3184
  asection *sgot;
3185
  asection *sgotplt;
3186
  asection *splt;
3187
  asection *sreloc;
3188
  asection *srelgot;
3189
  bfd_boolean is_vxworks_tls;
3190
 
3191
  BFD_ASSERT (is_sh_elf (input_bfd));
3192
 
3193
  htab = sh_elf_hash_table (info);
3194
  symtab_hdr = &elf_symtab_hdr (input_bfd);
3195
  sym_hashes = elf_sym_hashes (input_bfd);
3196
  dynobj = htab->root.dynobj;
3197
  local_got_offsets = elf_local_got_offsets (input_bfd);
3198
 
3199
  sgot = htab->sgot;
3200
  sgotplt = htab->sgotplt;
3201
  splt = htab->splt;
3202
  sreloc = NULL;
3203
  srelgot = NULL;
3204
  /* We have to handle relocations in vxworks .tls_vars sections
3205
     specially, because the dynamic loader is 'weird'.  */
3206
  is_vxworks_tls = (htab->vxworks_p && info->shared
3207
                    && !strcmp (input_section->output_section->name,
3208
                                ".tls_vars"));
3209
 
3210
  rel = relocs;
3211
  relend = relocs + input_section->reloc_count;
3212
  for (; rel < relend; rel++)
3213
    {
3214
      int r_type;
3215
      reloc_howto_type *howto;
3216
      unsigned long r_symndx;
3217
      Elf_Internal_Sym *sym;
3218
      asection *sec;
3219
      struct elf_link_hash_entry *h;
3220
      bfd_vma relocation;
3221
      bfd_vma addend = (bfd_vma) 0;
3222
      bfd_reloc_status_type r;
3223
      int seen_stt_datalabel = 0;
3224
      bfd_vma off;
3225
      int tls_type;
3226
 
3227
      r_symndx = ELF32_R_SYM (rel->r_info);
3228
 
3229
      r_type = ELF32_R_TYPE (rel->r_info);
3230
 
3231
      /* Many of the relocs are only used for relaxing, and are
3232
         handled entirely by the relaxation code.  */
3233
      if (r_type >= (int) R_SH_GNU_VTINHERIT
3234
          && r_type <= (int) R_SH_LABEL)
3235
        continue;
3236
      if (r_type == (int) R_SH_NONE)
3237
        continue;
3238
 
3239
      if (r_type < 0
3240
          || r_type >= R_SH_max
3241
          || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3242
              && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3243
          || (   r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3244
              && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3245
          || (   r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3246
              && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3247
          || (   r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3248
              && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3249
          || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3250
              && r_type <= (int) R_SH_LAST_INVALID_RELOC_2))
3251
        {
3252
          bfd_set_error (bfd_error_bad_value);
3253
          return FALSE;
3254
        }
3255
 
3256
      howto = get_howto_table (output_bfd) + r_type;
3257
 
3258
      /* For relocs that aren't partial_inplace, we get the addend from
3259
         the relocation.  */
3260
      if (! howto->partial_inplace)
3261
        addend = rel->r_addend;
3262
 
3263
      h = NULL;
3264
      sym = NULL;
3265
      sec = NULL;
3266
      if (r_symndx < symtab_hdr->sh_info)
3267
        {
3268
          sym = local_syms + r_symndx;
3269
          sec = local_sections[r_symndx];
3270
          relocation = (sec->output_section->vma
3271
                        + sec->output_offset
3272
                        + sym->st_value);
3273
          /* A local symbol never has STO_SH5_ISA32, so we don't need
3274
             datalabel processing here.  Make sure this does not change
3275
             without notice.  */
3276
          if ((sym->st_other & STO_SH5_ISA32) != 0)
3277
            ((*info->callbacks->reloc_dangerous)
3278
             (info,
3279
              _("Unexpected STO_SH5_ISA32 on local symbol is not handled"),
3280
              input_bfd, input_section, rel->r_offset));
3281
 
3282
          if (sec != NULL && elf_discarded_section (sec))
3283
            /* Handled below.  */
3284
            ;
3285
          else if (info->relocatable)
3286
            {
3287
              /* This is a relocatable link.  We don't have to change
3288
                 anything, unless the reloc is against a section symbol,
3289
                 in which case we have to adjust according to where the
3290
                 section symbol winds up in the output section.  */
3291
              if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3292
                {
3293
                  if (! howto->partial_inplace)
3294
                    {
3295
                      /* For relocations with the addend in the
3296
                         relocation, we need just to update the addend.
3297
                         All real relocs are of type partial_inplace; this
3298
                         code is mostly for completeness.  */
3299
                      rel->r_addend += sec->output_offset;
3300
 
3301
                      continue;
3302
                    }
3303
 
3304
                  /* Relocs of type partial_inplace need to pick up the
3305
                     contents in the contents and add the offset resulting
3306
                     from the changed location of the section symbol.
3307
                     Using _bfd_final_link_relocate (e.g. goto
3308
                     final_link_relocate) here would be wrong, because
3309
                     relocations marked pc_relative would get the current
3310
                     location subtracted, and we must only do that at the
3311
                     final link.  */
3312
                  r = _bfd_relocate_contents (howto, input_bfd,
3313
                                              sec->output_offset
3314
                                              + sym->st_value,
3315
                                              contents + rel->r_offset);
3316
                  goto relocation_done;
3317
                }
3318
 
3319
              continue;
3320
            }
3321
          else if (! howto->partial_inplace)
3322
            {
3323
              relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3324
              addend = rel->r_addend;
3325
            }
3326
          else if ((sec->flags & SEC_MERGE)
3327
                   && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3328
            {
3329
              asection *msec;
3330
 
3331
              if (howto->rightshift || howto->src_mask != 0xffffffff)
3332
                {
3333
                  (*_bfd_error_handler)
3334
                    (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
3335
                     input_bfd, input_section,
3336
                     (long) rel->r_offset, howto->name);
3337
                  return FALSE;
3338
                }
3339
 
3340
              addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3341
              msec = sec;
3342
              addend =
3343
                _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3344
                - relocation;
3345
              addend += msec->output_section->vma + msec->output_offset;
3346
              bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3347
              addend = 0;
3348
            }
3349
        }
3350
      else
3351
        {
3352
          /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro.  */
3353
 
3354
          relocation = 0;
3355
          h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3356
          while (h->root.type == bfd_link_hash_indirect
3357
                 || h->root.type == bfd_link_hash_warning)
3358
            {
3359
#ifdef INCLUDE_SHMEDIA
3360
              /* If the reference passes a symbol marked with
3361
                 STT_DATALABEL, then any STO_SH5_ISA32 on the final value
3362
                 doesn't count.  */
3363
              seen_stt_datalabel |= h->type == STT_DATALABEL;
3364
#endif
3365
              h = (struct elf_link_hash_entry *) h->root.u.i.link;
3366
            }
3367
          if (h->root.type == bfd_link_hash_defined
3368
              || h->root.type == bfd_link_hash_defweak)
3369
            {
3370
              bfd_boolean dyn;
3371
 
3372
              dyn = htab->root.dynamic_sections_created;
3373
              sec = h->root.u.def.section;
3374
              /* In these cases, we don't need the relocation value.
3375
                 We check specially because in some obscure cases
3376
                 sec->output_section will be NULL.  */
3377
              if (r_type == R_SH_GOTPC
3378
                  || r_type == R_SH_GOTPC_LOW16
3379
                  || r_type == R_SH_GOTPC_MEDLOW16
3380
                  || r_type == R_SH_GOTPC_MEDHI16
3381
                  || r_type == R_SH_GOTPC_HI16
3382
                  || ((r_type == R_SH_PLT32
3383
                       || r_type == R_SH_PLT_LOW16
3384
                       || r_type == R_SH_PLT_MEDLOW16
3385
                       || r_type == R_SH_PLT_MEDHI16
3386
                       || r_type == R_SH_PLT_HI16)
3387
                      && h->plt.offset != (bfd_vma) -1)
3388
                  || ((r_type == R_SH_GOT32
3389
                       || r_type == R_SH_GOT_LOW16
3390
                       || r_type == R_SH_GOT_MEDLOW16
3391
                       || r_type == R_SH_GOT_MEDHI16
3392
                       || r_type == R_SH_GOT_HI16)
3393
                      && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3394
                      && (! info->shared
3395
                          || (! info->symbolic && h->dynindx != -1)
3396
                          || !h->def_regular))
3397
                  /* The cases above are those in which relocation is
3398
                     overwritten in the switch block below.  The cases
3399
                     below are those in which we must defer relocation
3400
                     to run-time, because we can't resolve absolute
3401
                     addresses when creating a shared library.  */
3402
                  || (info->shared
3403
                      && ((! info->symbolic && h->dynindx != -1)
3404
                          || !h->def_regular)
3405
                      && ((r_type == R_SH_DIR32
3406
                           && !h->forced_local)
3407
                          || (r_type == R_SH_REL32
3408
                              && !SYMBOL_CALLS_LOCAL (info, h)))
3409
                      && ((input_section->flags & SEC_ALLOC) != 0
3410
                          /* DWARF will emit R_SH_DIR32 relocations in its
3411
                             sections against symbols defined externally
3412
                             in shared libraries.  We can't do anything
3413
                             with them here.  */
3414
                          || ((input_section->flags & SEC_DEBUGGING) != 0
3415
                              && h->def_dynamic)))
3416
                  /* Dynamic relocs are not propagated for SEC_DEBUGGING
3417
                     sections because such sections are not SEC_ALLOC and
3418
                     thus ld.so will not process them.  */
3419
                  || (sec->output_section == NULL
3420
                      && ((input_section->flags & SEC_DEBUGGING) != 0
3421
                          && h->def_dynamic))
3422
                  || (sec->output_section == NULL
3423
                      && (sh_elf_hash_entry (h)->tls_type == GOT_TLS_IE
3424
                          || sh_elf_hash_entry (h)->tls_type == GOT_TLS_GD)))
3425
                ;
3426
              else if (sec->output_section != NULL)
3427
                relocation = ((h->root.u.def.value
3428
                              + sec->output_section->vma
3429
                              + sec->output_offset)
3430
                              /* A STO_SH5_ISA32 causes a "bitor 1" to the
3431
                                 symbol value, unless we've seen
3432
                                 STT_DATALABEL on the way to it.  */
3433
                              | ((h->other & STO_SH5_ISA32) != 0
3434
                                 && ! seen_stt_datalabel));
3435
              else if (!info->relocatable)
3436
                {
3437
                  (*_bfd_error_handler)
3438
                    (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3439
                     input_bfd,
3440
                     input_section,
3441
                     (long) rel->r_offset,
3442
                     howto->name,
3443
                     h->root.root.string);
3444
                  return FALSE;
3445
                }
3446
            }
3447
          else if (h->root.type == bfd_link_hash_undefweak)
3448
            ;
3449
          else if (info->unresolved_syms_in_objects == RM_IGNORE
3450
                   && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3451
            ;
3452
          else if (!info->relocatable)
3453
            {
3454
              if (! info->callbacks->undefined_symbol
3455
                  (info, h->root.root.string, input_bfd,
3456
                   input_section, rel->r_offset,
3457
                   (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
3458
                    || ELF_ST_VISIBILITY (h->other))))
3459
                return FALSE;
3460
            }
3461
        }
3462
 
3463
      if (sec != NULL && elf_discarded_section (sec))
3464
        {
3465
          /* For relocs against symbols from removed linkonce sections,
3466
             or sections discarded by a linker script, we just want the
3467
             section contents zeroed.  Avoid any special processing.  */
3468
          _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
3469
          rel->r_info = 0;
3470
          rel->r_addend = 0;
3471
          continue;
3472
        }
3473
 
3474
      if (info->relocatable)
3475
        continue;
3476
 
3477
      switch ((int) r_type)
3478
        {
3479
        final_link_relocate:
3480
          /* COFF relocs don't use the addend. The addend is used for
3481
             R_SH_DIR32 to be compatible with other compilers.  */
3482
          r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3483
                                        contents, rel->r_offset,
3484
                                        relocation, addend);
3485
          break;
3486
 
3487
        case R_SH_IND12W:
3488
          goto final_link_relocate;
3489
 
3490
        case R_SH_DIR8WPN:
3491
        case R_SH_DIR8WPZ:
3492
        case R_SH_DIR8WPL:
3493
          /* If the reloc is against the start of this section, then
3494
             the assembler has already taken care of it and the reloc
3495
             is here only to assist in relaxing.  If the reloc is not
3496
             against the start of this section, then it's against an
3497
             external symbol and we must deal with it ourselves.  */
3498
          if (input_section->output_section->vma + input_section->output_offset
3499
              != relocation)
3500
            {
3501
              int disp = (relocation
3502
                          - input_section->output_section->vma
3503
                          - input_section->output_offset
3504
                          - rel->r_offset);
3505
              int mask = 0;
3506
              switch (r_type)
3507
                {
3508
                case R_SH_DIR8WPN:
3509
                case R_SH_DIR8WPZ: mask = 1; break;
3510
                case R_SH_DIR8WPL: mask = 3; break;
3511
                default: mask = 0; break;
3512
                }
3513
              if (disp & mask)
3514
                {
3515
                  ((*_bfd_error_handler)
3516
                   (_("%B: 0x%lx: fatal: unaligned branch target for relax-support relocation"),
3517
                    input_section->owner,
3518
                    (unsigned long) rel->r_offset));
3519
                  bfd_set_error (bfd_error_bad_value);
3520
                  return FALSE;
3521
                }
3522
              relocation -= 4;
3523
              goto final_link_relocate;
3524
            }
3525
          r = bfd_reloc_ok;
3526
          break;
3527
 
3528
        default:
3529
#ifdef INCLUDE_SHMEDIA
3530
          if (shmedia_prepare_reloc (info, input_bfd, input_section,
3531
                                     contents, rel, &relocation))
3532
            goto final_link_relocate;
3533
#endif
3534
          bfd_set_error (bfd_error_bad_value);
3535
          return FALSE;
3536
 
3537
        case R_SH_DIR16:
3538
        case R_SH_DIR8:
3539
        case R_SH_DIR8U:
3540
        case R_SH_DIR8S:
3541
        case R_SH_DIR4U:
3542
          goto final_link_relocate;
3543
 
3544
        case R_SH_DIR8UL:
3545
        case R_SH_DIR4UL:
3546
          if (relocation & 3)
3547
            {
3548
              ((*_bfd_error_handler)
3549
               (_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
3550
                input_section->owner,
3551
                (unsigned long) rel->r_offset, howto->name,
3552
                (unsigned long) relocation));
3553
              bfd_set_error (bfd_error_bad_value);
3554
              return FALSE;
3555
            }
3556
          goto final_link_relocate;
3557
 
3558
        case R_SH_DIR8UW:
3559
        case R_SH_DIR8SW:
3560
        case R_SH_DIR4UW:
3561
          if (relocation & 1)
3562
            {
3563
              ((*_bfd_error_handler)
3564
               (_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
3565
                input_section->owner,
3566
                (unsigned long) rel->r_offset, howto->name,
3567
                (unsigned long) relocation));
3568
              bfd_set_error (bfd_error_bad_value);
3569
              return FALSE;
3570
            }
3571
          goto final_link_relocate;
3572
 
3573
        case R_SH_PSHA:
3574
          if ((signed int)relocation < -32
3575
              || (signed int)relocation > 32)
3576
            {
3577
              ((*_bfd_error_handler)
3578
               (_("%B: 0x%lx: fatal: R_SH_PSHA relocation %d not in range -32..32"),
3579
                input_section->owner,
3580
                (unsigned long) rel->r_offset,
3581
                (unsigned long) relocation));
3582
              bfd_set_error (bfd_error_bad_value);
3583
              return FALSE;
3584
            }
3585
          goto final_link_relocate;
3586
 
3587
        case R_SH_PSHL:
3588
          if ((signed int)relocation < -16
3589
              || (signed int)relocation > 16)
3590
            {
3591
              ((*_bfd_error_handler)
3592
               (_("%B: 0x%lx: fatal: R_SH_PSHL relocation %d not in range -32..32"),
3593
                input_section->owner,
3594
                (unsigned long) rel->r_offset,
3595
                (unsigned long) relocation));
3596
              bfd_set_error (bfd_error_bad_value);
3597
              return FALSE;
3598
            }
3599
          goto final_link_relocate;
3600
 
3601
        case R_SH_DIR32:
3602
        case R_SH_REL32:
3603
#ifdef INCLUDE_SHMEDIA
3604
        case R_SH_IMM_LOW16_PCREL:
3605
        case R_SH_IMM_MEDLOW16_PCREL:
3606
        case R_SH_IMM_MEDHI16_PCREL:
3607
        case R_SH_IMM_HI16_PCREL:
3608
#endif
3609
          if (info->shared
3610
              && (h == NULL
3611
                  || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3612
                  || h->root.type != bfd_link_hash_undefweak)
3613
              && r_symndx != 0
3614
              && (input_section->flags & SEC_ALLOC) != 0
3615
              && !is_vxworks_tls
3616
              && (r_type == R_SH_DIR32
3617
                  || !SYMBOL_CALLS_LOCAL (info, h)))
3618
            {
3619
              Elf_Internal_Rela outrel;
3620
              bfd_byte *loc;
3621
              bfd_boolean skip, relocate;
3622
 
3623
              /* When generating a shared object, these relocations
3624
                 are copied into the output file to be resolved at run
3625
                 time.  */
3626
 
3627
              if (sreloc == NULL)
3628
                {
3629
                  const char *name;
3630
 
3631
                  name = (bfd_elf_string_from_elf_section
3632
                          (input_bfd,
3633
                           elf_elfheader (input_bfd)->e_shstrndx,
3634
                           elf_section_data (input_section)->rel_hdr.sh_name));
3635
                  if (name == NULL)
3636
                    return FALSE;
3637
 
3638
                  BFD_ASSERT (CONST_STRNEQ (name, ".rela")
3639
                              && strcmp (bfd_get_section_name (input_bfd,
3640
                                                               input_section),
3641
                                         name + 5) == 0);
3642
 
3643
                  sreloc = bfd_get_section_by_name (dynobj, name);
3644
                  BFD_ASSERT (sreloc != NULL);
3645
                }
3646
 
3647
              skip = FALSE;
3648
              relocate = FALSE;
3649
 
3650
              outrel.r_offset =
3651
                _bfd_elf_section_offset (output_bfd, info, input_section,
3652
                                         rel->r_offset);
3653
              if (outrel.r_offset == (bfd_vma) -1)
3654
                skip = TRUE;
3655
              else if (outrel.r_offset == (bfd_vma) -2)
3656
                skip = TRUE, relocate = TRUE;
3657
              outrel.r_offset += (input_section->output_section->vma
3658
                                  + input_section->output_offset);
3659
 
3660
              if (skip)
3661
                memset (&outrel, 0, sizeof outrel);
3662
              else if (r_type == R_SH_REL32)
3663
                {
3664
                  BFD_ASSERT (h != NULL && h->dynindx != -1);
3665
                  outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
3666
                  outrel.r_addend
3667
                    = (howto->partial_inplace
3668
                       ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3669
                       : addend);
3670
                }
3671
#ifdef INCLUDE_SHMEDIA
3672
              else if (r_type == R_SH_IMM_LOW16_PCREL
3673
                       || r_type == R_SH_IMM_MEDLOW16_PCREL
3674
                       || r_type == R_SH_IMM_MEDHI16_PCREL
3675
                       || r_type == R_SH_IMM_HI16_PCREL)
3676
                {
3677
                  BFD_ASSERT (h != NULL && h->dynindx != -1);
3678
                  outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3679
                  outrel.r_addend = addend;
3680
                }
3681
#endif
3682
              else
3683
                {
3684
                  /* h->dynindx may be -1 if this symbol was marked to
3685
                     become local.  */
3686
                  if (h == NULL
3687
                      || ((info->symbolic || h->dynindx == -1)
3688
                          && h->def_regular))
3689
                    {
3690
                      relocate = howto->partial_inplace;
3691
                      outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3692
                    }
3693
                  else
3694
                    {
3695
                      BFD_ASSERT (h->dynindx != -1);
3696
                      outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
3697
                    }
3698
                  outrel.r_addend = relocation;
3699
                  outrel.r_addend
3700
                    += (howto->partial_inplace
3701
                        ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3702
                        : addend);
3703
                }
3704
 
3705
              loc = sreloc->contents;
3706
              loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3707
              bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3708
 
3709
              /* If this reloc is against an external symbol, we do
3710
                 not want to fiddle with the addend.  Otherwise, we
3711
                 need to include the symbol value so that it becomes
3712
                 an addend for the dynamic reloc.  */
3713
              if (! relocate)
3714
                continue;
3715
            }
3716
          goto final_link_relocate;
3717
 
3718
        case R_SH_GOTPLT32:
3719
#ifdef INCLUDE_SHMEDIA
3720
        case R_SH_GOTPLT_LOW16:
3721
        case R_SH_GOTPLT_MEDLOW16:
3722
        case R_SH_GOTPLT_MEDHI16:
3723
        case R_SH_GOTPLT_HI16:
3724
        case R_SH_GOTPLT10BY4:
3725
        case R_SH_GOTPLT10BY8:
3726
#endif
3727
          /* Relocation is to the entry for this symbol in the
3728
             procedure linkage table.  */
3729
 
3730
          if (h == NULL
3731
              || h->forced_local
3732
              || ! info->shared
3733
              || info->symbolic
3734
              || h->dynindx == -1
3735
              || h->plt.offset == (bfd_vma) -1
3736
              || h->got.offset != (bfd_vma) -1)
3737
            goto force_got;
3738
 
3739
          /* Relocation is to the entry for this symbol in the global
3740
             offset table extension for the procedure linkage table.  */
3741
 
3742
          BFD_ASSERT (sgotplt != NULL);
3743
          relocation = (sgotplt->output_offset
3744
                        + (get_plt_index (htab->plt_info, h->plt.offset)
3745
                           + 3) * 4);
3746
 
3747
#ifdef GOT_BIAS
3748
          relocation -= GOT_BIAS;
3749
#endif
3750
 
3751
          goto final_link_relocate;
3752
 
3753
        force_got:
3754
        case R_SH_GOT32:
3755
#ifdef INCLUDE_SHMEDIA
3756
        case R_SH_GOT_LOW16:
3757
        case R_SH_GOT_MEDLOW16:
3758
        case R_SH_GOT_MEDHI16:
3759
        case R_SH_GOT_HI16:
3760
        case R_SH_GOT10BY4:
3761
        case R_SH_GOT10BY8:
3762
#endif
3763
          /* Relocation is to the entry for this symbol in the global
3764
             offset table.  */
3765
 
3766
          BFD_ASSERT (sgot != NULL);
3767
 
3768
          if (h != NULL)
3769
            {
3770
              bfd_boolean dyn;
3771
 
3772
              off = h->got.offset;
3773
#ifdef INCLUDE_SHMEDIA
3774
              if (seen_stt_datalabel)
3775
                {
3776
                  struct elf_sh_link_hash_entry *hsh;
3777
 
3778
                  hsh = (struct elf_sh_link_hash_entry *)h;
3779
                  off = hsh->datalabel_got.offset;
3780
                }
3781
#endif
3782
              BFD_ASSERT (off != (bfd_vma) -1);
3783
 
3784
              dyn = htab->root.dynamic_sections_created;
3785
              if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3786
                  || (info->shared
3787
                      && SYMBOL_REFERENCES_LOCAL (info, h))
3788
                  || (ELF_ST_VISIBILITY (h->other)
3789
                      && h->root.type == bfd_link_hash_undefweak))
3790
                {
3791
                  /* This is actually a static link, or it is a
3792
                     -Bsymbolic link and the symbol is defined
3793
                     locally, or the symbol was forced to be local
3794
                     because of a version file.  We must initialize
3795
                     this entry in the global offset table.  Since the
3796
                     offset must always be a multiple of 4, we use the
3797
                     least significant bit to record whether we have
3798
                     initialized it already.
3799
 
3800
                     When doing a dynamic link, we create a .rela.got
3801
                     relocation entry to initialize the value.  This
3802
                     is done in the finish_dynamic_symbol routine.  */
3803
                  if ((off & 1) != 0)
3804
                    off &= ~1;
3805
                  else
3806
                    {
3807
                      bfd_put_32 (output_bfd, relocation,
3808
                                  sgot->contents + off);
3809
#ifdef INCLUDE_SHMEDIA
3810
                      if (seen_stt_datalabel)
3811
                        {
3812
                          struct elf_sh_link_hash_entry *hsh;
3813
 
3814
                          hsh = (struct elf_sh_link_hash_entry *)h;
3815
                          hsh->datalabel_got.offset |= 1;
3816
                        }
3817
                      else
3818
#endif
3819
                        h->got.offset |= 1;
3820
                    }
3821
                }
3822
 
3823
              relocation = sgot->output_offset + off;
3824
            }
3825
          else
3826
            {
3827
#ifdef INCLUDE_SHMEDIA
3828
              if (rel->r_addend)
3829
                {
3830
                  BFD_ASSERT (local_got_offsets != NULL
3831
                              && (local_got_offsets[symtab_hdr->sh_info
3832
                                                    + r_symndx]
3833
                                  != (bfd_vma) -1));
3834
 
3835
                  off = local_got_offsets[symtab_hdr->sh_info
3836
                                          + r_symndx];
3837
                }
3838
              else
3839
                {
3840
#endif
3841
              BFD_ASSERT (local_got_offsets != NULL
3842
                          && local_got_offsets[r_symndx] != (bfd_vma) -1);
3843
 
3844
              off = local_got_offsets[r_symndx];
3845
#ifdef INCLUDE_SHMEDIA
3846
                }
3847
#endif
3848
 
3849
              /* The offset must always be a multiple of 4.  We use
3850
                 the least significant bit to record whether we have
3851
                 already generated the necessary reloc.  */
3852
              if ((off & 1) != 0)
3853
                off &= ~1;
3854
              else
3855
                {
3856
                  bfd_put_32 (output_bfd, relocation, sgot->contents + off);
3857
 
3858
                  if (info->shared)
3859
                    {
3860
                      Elf_Internal_Rela outrel;
3861
                      bfd_byte *loc;
3862
 
3863
                      if (srelgot == NULL)
3864
                        {
3865
                          srelgot = bfd_get_section_by_name (dynobj,
3866
                                                             ".rela.got");
3867
                          BFD_ASSERT (srelgot != NULL);
3868
                        }
3869
 
3870
                      outrel.r_offset = (sgot->output_section->vma
3871
                                         + sgot->output_offset
3872
                                         + off);
3873
                      outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3874
                      outrel.r_addend = relocation;
3875
                      loc = srelgot->contents;
3876
                      loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3877
                      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3878
                    }
3879
 
3880
#ifdef INCLUDE_SHMEDIA
3881
                  if (rel->r_addend)
3882
                    local_got_offsets[symtab_hdr->sh_info + r_symndx] |= 1;
3883
                  else
3884
#endif
3885
                    local_got_offsets[r_symndx] |= 1;
3886
                }
3887
 
3888
              relocation = sgot->output_offset + off;
3889
            }
3890
 
3891
#ifdef GOT_BIAS
3892
          relocation -= GOT_BIAS;
3893
#endif
3894
 
3895
          goto final_link_relocate;
3896
 
3897
        case R_SH_GOTOFF:
3898
#ifdef INCLUDE_SHMEDIA
3899
        case R_SH_GOTOFF_LOW16:
3900
        case R_SH_GOTOFF_MEDLOW16:
3901
        case R_SH_GOTOFF_MEDHI16:
3902
        case R_SH_GOTOFF_HI16:
3903
#endif
3904
          /* Relocation is relative to the start of the global offset
3905
             table.  */
3906
 
3907
          BFD_ASSERT (sgot != NULL);
3908
 
3909
          /* Note that sgot->output_offset is not involved in this
3910
             calculation.  We always want the start of .got.  If we
3911
             defined _GLOBAL_OFFSET_TABLE in a different way, as is
3912
             permitted by the ABI, we might have to change this
3913
             calculation.  */
3914
          relocation -= sgot->output_section->vma;
3915
 
3916
#ifdef GOT_BIAS
3917
          relocation -= GOT_BIAS;
3918
#endif
3919
 
3920
          addend = rel->r_addend;
3921
 
3922
          goto final_link_relocate;
3923
 
3924
        case R_SH_GOTPC:
3925
#ifdef INCLUDE_SHMEDIA
3926
        case R_SH_GOTPC_LOW16:
3927
        case R_SH_GOTPC_MEDLOW16:
3928
        case R_SH_GOTPC_MEDHI16:
3929
        case R_SH_GOTPC_HI16:
3930
#endif
3931
          /* Use global offset table as symbol value.  */
3932
 
3933
          BFD_ASSERT (sgot != NULL);
3934
          relocation = sgot->output_section->vma;
3935
 
3936
#ifdef GOT_BIAS
3937
          relocation += GOT_BIAS;
3938
#endif
3939
 
3940
          addend = rel->r_addend;
3941
 
3942
          goto final_link_relocate;
3943
 
3944
        case R_SH_PLT32:
3945
#ifdef INCLUDE_SHMEDIA
3946
        case R_SH_PLT_LOW16:
3947
        case R_SH_PLT_MEDLOW16:
3948
        case R_SH_PLT_MEDHI16:
3949
        case R_SH_PLT_HI16:
3950
#endif
3951
          /* Relocation is to the entry for this symbol in the
3952
             procedure linkage table.  */
3953
 
3954
          /* Resolve a PLT reloc against a local symbol directly,
3955
             without using the procedure linkage table.  */
3956
          if (h == NULL)
3957
            goto final_link_relocate;
3958
 
3959
          if (h->forced_local)
3960
            goto final_link_relocate;
3961
 
3962
          if (h->plt.offset == (bfd_vma) -1)
3963
            {
3964
              /* We didn't make a PLT entry for this symbol.  This
3965
                 happens when statically linking PIC code, or when
3966
                 using -Bsymbolic.  */
3967
              goto final_link_relocate;
3968
            }
3969
 
3970
          BFD_ASSERT (splt != NULL);
3971
          relocation = (splt->output_section->vma
3972
                        + splt->output_offset
3973
                        + h->plt.offset);
3974
 
3975
#ifdef INCLUDE_SHMEDIA
3976
          relocation++;
3977
#endif
3978
 
3979
          addend = rel->r_addend;
3980
 
3981
          goto final_link_relocate;
3982
 
3983
        case R_SH_LOOP_START:
3984
          {
3985
            static bfd_vma start, end;
3986
 
3987
            start = (relocation + rel->r_addend
3988
                     - (sec->output_section->vma + sec->output_offset));
3989
            r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
3990
                                   rel->r_offset, sec, start, end);
3991
            break;
3992
 
3993
        case R_SH_LOOP_END:
3994
            end = (relocation + rel->r_addend
3995
                   - (sec->output_section->vma + sec->output_offset));
3996
            r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
3997
                                   rel->r_offset, sec, start, end);
3998
            break;
3999
          }
4000
 
4001
        case R_SH_TLS_GD_32:
4002
        case R_SH_TLS_IE_32:
4003
          r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4004
          tls_type = GOT_UNKNOWN;
4005
          if (h == NULL && local_got_offsets)
4006
            tls_type = sh_elf_local_got_tls_type (input_bfd) [r_symndx];
4007
          else if (h != NULL)
4008
            {
4009
              tls_type = sh_elf_hash_entry (h)->tls_type;
4010
              if (! info->shared
4011
                  && (h->dynindx == -1
4012
                      || h->def_regular))
4013
                r_type = R_SH_TLS_LE_32;
4014
            }
4015
 
4016
          if (r_type == R_SH_TLS_GD_32 && tls_type == GOT_TLS_IE)
4017
            r_type = R_SH_TLS_IE_32;
4018
 
4019
          if (r_type == R_SH_TLS_LE_32)
4020
            {
4021
              bfd_vma offset;
4022
              unsigned short insn;
4023
 
4024
              if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4025
                {
4026
                  /* GD->LE transition:
4027
                       mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4028
                       jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4029
                       1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4030
                     We change it into:
4031
                       mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4032
                       nop; nop; ...
4033
                       1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:.  */
4034
 
4035
                  offset = rel->r_offset;
4036
                  BFD_ASSERT (offset >= 16);
4037
                  /* Size of GD instructions is 16 or 18.  */
4038
                  offset -= 16;
4039
                  insn = bfd_get_16 (input_bfd, contents + offset + 0);
4040
                  if ((insn & 0xff00) == 0xc700)
4041
                    {
4042
                      BFD_ASSERT (offset >= 2);
4043
                      offset -= 2;
4044
                      insn = bfd_get_16 (input_bfd, contents + offset + 0);
4045
                    }
4046
 
4047
                  BFD_ASSERT ((insn & 0xff00) == 0xd400);
4048
                  insn = bfd_get_16 (input_bfd, contents + offset + 2);
4049
                  BFD_ASSERT ((insn & 0xff00) == 0xc700);
4050
                  insn = bfd_get_16 (input_bfd, contents + offset + 4);
4051
                  BFD_ASSERT ((insn & 0xff00) == 0xd100);
4052
                  insn = bfd_get_16 (input_bfd, contents + offset + 6);
4053
                  BFD_ASSERT (insn == 0x310c);
4054
                  insn = bfd_get_16 (input_bfd, contents + offset + 8);
4055
                  BFD_ASSERT (insn == 0x410b);
4056
                  insn = bfd_get_16 (input_bfd, contents + offset + 10);
4057
                  BFD_ASSERT (insn == 0x34cc);
4058
 
4059
                  bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4060
                  bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4061
                  bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4062
                  bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4063
                  bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4064
                }
4065
              else
4066
                {
4067
                  int index;
4068
 
4069
                  /* IE->LE transition:
4070
                     mov.l 1f,r0; stc gbr,rN; mov.l @(r0,r12),rM;
4071
                     bra 2f; add ...; .align 2; 1: x@GOTTPOFF; 2:
4072
                     We change it into:
4073
                     mov.l .Ln,rM; stc gbr,rN; nop; ...;
4074
                     1: x@TPOFF; 2:.  */
4075
 
4076
                  offset = rel->r_offset;
4077
                  BFD_ASSERT (offset >= 16);
4078
                  /* Size of IE instructions is 10 or 12.  */
4079
                  offset -= 10;
4080
                  insn = bfd_get_16 (input_bfd, contents + offset + 0);
4081
                  if ((insn & 0xf0ff) == 0x0012)
4082
                    {
4083
                      BFD_ASSERT (offset >= 2);
4084
                      offset -= 2;
4085
                      insn = bfd_get_16 (input_bfd, contents + offset + 0);
4086
                    }
4087
 
4088
                  BFD_ASSERT ((insn & 0xff00) == 0xd000);
4089
                  index = insn & 0x00ff;
4090
                  insn = bfd_get_16 (input_bfd, contents + offset + 2);
4091
                  BFD_ASSERT ((insn & 0xf0ff) == 0x0012);
4092
                  insn = bfd_get_16 (input_bfd, contents + offset + 4);
4093
                  BFD_ASSERT ((insn & 0xf0ff) == 0x00ce);
4094
                  insn = 0xd000 | (insn & 0x0f00) | index;
4095
                  bfd_put_16 (output_bfd, insn, contents + offset + 0);
4096
                  bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4097
                }
4098
 
4099
              bfd_put_32 (output_bfd, tpoff (info, relocation),
4100
                          contents + rel->r_offset);
4101
              continue;
4102
            }
4103
 
4104
          sgot = htab->sgot;
4105
          if (sgot == NULL)
4106
            abort ();
4107
 
4108
          if (h != NULL)
4109
            off = h->got.offset;
4110
          else
4111
            {
4112
              if (local_got_offsets == NULL)
4113
                abort ();
4114
 
4115
              off = local_got_offsets[r_symndx];
4116
            }
4117
 
4118
          /* Relocate R_SH_TLS_IE_32 directly when statically linking.  */
4119
          if (r_type == R_SH_TLS_IE_32
4120
              && ! htab->root.dynamic_sections_created)
4121
            {
4122
              off &= ~1;
4123
              bfd_put_32 (output_bfd, tpoff (info, relocation),
4124
                          sgot->contents + off);
4125
              bfd_put_32 (output_bfd, sgot->output_offset + off,
4126
                          contents + rel->r_offset);
4127
              continue;
4128
            }
4129
 
4130
          if ((off & 1) != 0)
4131
            off &= ~1;
4132
          else
4133
            {
4134
              Elf_Internal_Rela outrel;
4135
              bfd_byte *loc;
4136
              int dr_type, indx;
4137
 
4138
              if (srelgot == NULL)
4139
                {
4140
                  srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4141
                  BFD_ASSERT (srelgot != NULL);
4142
                }
4143
 
4144
              outrel.r_offset = (sgot->output_section->vma
4145
                                 + sgot->output_offset + off);
4146
 
4147
              if (h == NULL || h->dynindx == -1)
4148
                indx = 0;
4149
              else
4150
                indx = h->dynindx;
4151
 
4152
              dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4153
                         R_SH_TLS_TPOFF32);
4154
              if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4155
                outrel.r_addend = relocation - dtpoff_base (info);
4156
              else
4157
                outrel.r_addend = 0;
4158
              outrel.r_info = ELF32_R_INFO (indx, dr_type);
4159
              loc = srelgot->contents;
4160
              loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4161
              bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4162
 
4163
              if (r_type == R_SH_TLS_GD_32)
4164
                {
4165
                  if (indx == 0)
4166
                    {
4167
                      bfd_put_32 (output_bfd,
4168
                                  relocation - dtpoff_base (info),
4169
                                  sgot->contents + off + 4);
4170
                    }
4171
                  else
4172
                    {
4173
                      outrel.r_info = ELF32_R_INFO (indx,
4174
                                                    R_SH_TLS_DTPOFF32);
4175
                      outrel.r_offset += 4;
4176
                      outrel.r_addend = 0;
4177
                      srelgot->reloc_count++;
4178
                      loc += sizeof (Elf32_External_Rela);
4179
                      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4180
                    }
4181
                }
4182
 
4183
              if (h != NULL)
4184
                h->got.offset |= 1;
4185
              else
4186
                local_got_offsets[r_symndx] |= 1;
4187
            }
4188
 
4189
          if (off >= (bfd_vma) -2)
4190
            abort ();
4191
 
4192
          if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4193
            relocation = sgot->output_offset + off;
4194
          else
4195
            {
4196
              bfd_vma offset;
4197
              unsigned short insn;
4198
 
4199
              /* GD->IE transition:
4200
                   mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4201
                   jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4202
                   1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4203
                 We change it into:
4204
                   mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4205
                   nop; nop; bra 3f; nop; .align 2;
4206
                   1: .long x@TPOFF; 2:...; 3:.  */
4207
 
4208
              offset = rel->r_offset;
4209
              BFD_ASSERT (offset >= 16);
4210
              /* Size of GD instructions is 16 or 18.  */
4211
              offset -= 16;
4212
              insn = bfd_get_16 (input_bfd, contents + offset + 0);
4213
              if ((insn & 0xff00) == 0xc700)
4214
                {
4215
                  BFD_ASSERT (offset >= 2);
4216
                  offset -= 2;
4217
                  insn = bfd_get_16 (input_bfd, contents + offset + 0);
4218
                }
4219
 
4220
              BFD_ASSERT ((insn & 0xff00) == 0xd400);
4221
 
4222
              /* Replace mov.l 1f,R4 with mov.l 1f,r0.  */
4223
              bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4224
 
4225
              insn = bfd_get_16 (input_bfd, contents + offset + 2);
4226
              BFD_ASSERT ((insn & 0xff00) == 0xc700);
4227
              insn = bfd_get_16 (input_bfd, contents + offset + 4);
4228
              BFD_ASSERT ((insn & 0xff00) == 0xd100);
4229
              insn = bfd_get_16 (input_bfd, contents + offset + 6);
4230
              BFD_ASSERT (insn == 0x310c);
4231
              insn = bfd_get_16 (input_bfd, contents + offset + 8);
4232
              BFD_ASSERT (insn == 0x410b);
4233
              insn = bfd_get_16 (input_bfd, contents + offset + 10);
4234
              BFD_ASSERT (insn == 0x34cc);
4235
 
4236
              bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4237
              bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4238
              bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4239
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4240
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4241
 
4242
              bfd_put_32 (output_bfd, sgot->output_offset + off,
4243
                          contents + rel->r_offset);
4244
 
4245
              continue;
4246
          }
4247
 
4248
          addend = rel->r_addend;
4249
 
4250
          goto final_link_relocate;
4251
 
4252
        case R_SH_TLS_LD_32:
4253
          if (! info->shared)
4254
            {
4255
              bfd_vma offset;
4256
              unsigned short insn;
4257
 
4258
              /* LD->LE transition:
4259
                   mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4260
                   jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4261
                   1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4262
                 We change it into:
4263
                   stc gbr,r0; nop; nop; nop;
4264
                   nop; nop; bra 3f; ...; 3:.  */
4265
 
4266
              offset = rel->r_offset;
4267
              BFD_ASSERT (offset >= 16);
4268
              /* Size of LD instructions is 16 or 18.  */
4269
              offset -= 16;
4270
              insn = bfd_get_16 (input_bfd, contents + offset + 0);
4271
              if ((insn & 0xff00) == 0xc700)
4272
                {
4273
                  BFD_ASSERT (offset >= 2);
4274
                  offset -= 2;
4275
                  insn = bfd_get_16 (input_bfd, contents + offset + 0);
4276
                }
4277
 
4278
              BFD_ASSERT ((insn & 0xff00) == 0xd400);
4279
              insn = bfd_get_16 (input_bfd, contents + offset + 2);
4280
              BFD_ASSERT ((insn & 0xff00) == 0xc700);
4281
              insn = bfd_get_16 (input_bfd, contents + offset + 4);
4282
              BFD_ASSERT ((insn & 0xff00) == 0xd100);
4283
              insn = bfd_get_16 (input_bfd, contents + offset + 6);
4284
              BFD_ASSERT (insn == 0x310c);
4285
              insn = bfd_get_16 (input_bfd, contents + offset + 8);
4286
              BFD_ASSERT (insn == 0x410b);
4287
              insn = bfd_get_16 (input_bfd, contents + offset + 10);
4288
              BFD_ASSERT (insn == 0x34cc);
4289
 
4290
              bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
4291
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
4292
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4293
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4294
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4295
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4296
 
4297
              continue;
4298
            }
4299
 
4300
          sgot = htab->sgot;
4301
          if (sgot == NULL)
4302
            abort ();
4303
 
4304
          off = htab->tls_ldm_got.offset;
4305
          if (off & 1)
4306
            off &= ~1;
4307
          else
4308
            {
4309
              Elf_Internal_Rela outrel;
4310
              bfd_byte *loc;
4311
 
4312
              srelgot = htab->srelgot;
4313
              if (srelgot == NULL)
4314
                abort ();
4315
 
4316
              outrel.r_offset = (sgot->output_section->vma
4317
                                 + sgot->output_offset + off);
4318
              outrel.r_addend = 0;
4319
              outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
4320
              loc = srelgot->contents;
4321
              loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4322
              bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4323
              htab->tls_ldm_got.offset |= 1;
4324
            }
4325
 
4326
          relocation = sgot->output_offset + off;
4327
          addend = rel->r_addend;
4328
 
4329
          goto final_link_relocate;
4330
 
4331
        case R_SH_TLS_LDO_32:
4332
          if (! info->shared)
4333
            relocation = tpoff (info, relocation);
4334
          else
4335
            relocation -= dtpoff_base (info);
4336
 
4337
          addend = rel->r_addend;
4338
          goto final_link_relocate;
4339
 
4340
        case R_SH_TLS_LE_32:
4341
          {
4342
            int indx;
4343
            Elf_Internal_Rela outrel;
4344
            bfd_byte *loc;
4345
 
4346
            if (! info->shared)
4347
              {
4348
                relocation = tpoff (info, relocation);
4349
                addend = rel->r_addend;
4350
                goto final_link_relocate;
4351
              }
4352
 
4353
            if (sreloc == NULL)
4354
              {
4355
                const char *name;
4356
 
4357
                name = (bfd_elf_string_from_elf_section
4358
                        (input_bfd,
4359
                         elf_elfheader (input_bfd)->e_shstrndx,
4360
                         elf_section_data (input_section)->rel_hdr.sh_name));
4361
                if (name == NULL)
4362
                  return FALSE;
4363
 
4364
                BFD_ASSERT (CONST_STRNEQ (name, ".rela")
4365
                            && strcmp (bfd_get_section_name (input_bfd,
4366
                                                             input_section),
4367
                                       name + 5) == 0);
4368
 
4369
                sreloc = bfd_get_section_by_name (dynobj, name);
4370
                BFD_ASSERT (sreloc != NULL);
4371
              }
4372
 
4373
            if (h == NULL || h->dynindx == -1)
4374
              indx = 0;
4375
            else
4376
              indx = h->dynindx;
4377
 
4378
            outrel.r_offset = (input_section->output_section->vma
4379
                               + input_section->output_offset
4380
                               + rel->r_offset);
4381
            outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
4382
            if (indx == 0)
4383
              outrel.r_addend = relocation - dtpoff_base (info);
4384
            else
4385
              outrel.r_addend = 0;
4386
 
4387
            loc = sreloc->contents;
4388
            loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4389
            bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4390
            continue;
4391
          }
4392
        }
4393
 
4394
    relocation_done:
4395
      if (r != bfd_reloc_ok)
4396
        {
4397
          switch (r)
4398
            {
4399
            default:
4400
            case bfd_reloc_outofrange:
4401
              abort ();
4402
            case bfd_reloc_overflow:
4403
              {
4404
                const char *name;
4405
 
4406
                if (h != NULL)
4407
                  name = NULL;
4408
                else
4409
                  {
4410
                    name = (bfd_elf_string_from_elf_section
4411
                            (input_bfd, symtab_hdr->sh_link, sym->st_name));
4412
                    if (name == NULL)
4413
                      return FALSE;
4414
                    if (*name == '\0')
4415
                      name = bfd_section_name (input_bfd, sec);
4416
                  }
4417
                if (! ((*info->callbacks->reloc_overflow)
4418
                       (info, (h ? &h->root : NULL), name, howto->name,
4419
                        (bfd_vma) 0, input_bfd, input_section,
4420
                        rel->r_offset)))
4421
                  return FALSE;
4422
              }
4423
              break;
4424
            }
4425
        }
4426
    }
4427
 
4428
  return TRUE;
4429
}
4430
 
4431
/* This is a version of bfd_generic_get_relocated_section_contents
4432
   which uses sh_elf_relocate_section.  */
4433
 
4434
static bfd_byte *
4435
sh_elf_get_relocated_section_contents (bfd *output_bfd,
4436
                                       struct bfd_link_info *link_info,
4437
                                       struct bfd_link_order *link_order,
4438
                                       bfd_byte *data,
4439
                                       bfd_boolean relocatable,
4440
                                       asymbol **symbols)
4441
{
4442
  Elf_Internal_Shdr *symtab_hdr;
4443
  asection *input_section = link_order->u.indirect.section;
4444
  bfd *input_bfd = input_section->owner;
4445
  asection **sections = NULL;
4446
  Elf_Internal_Rela *internal_relocs = NULL;
4447
  Elf_Internal_Sym *isymbuf = NULL;
4448
 
4449
  /* We only need to handle the case of relaxing, or of having a
4450
     particular set of section contents, specially.  */
4451
  if (relocatable
4452
      || elf_section_data (input_section)->this_hdr.contents == NULL)
4453
    return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
4454
                                                       link_order, data,
4455
                                                       relocatable,
4456
                                                       symbols);
4457
 
4458
  symtab_hdr = &elf_symtab_hdr (input_bfd);
4459
 
4460
  memcpy (data, elf_section_data (input_section)->this_hdr.contents,
4461
          (size_t) input_section->size);
4462
 
4463
  if ((input_section->flags & SEC_RELOC) != 0
4464
      && input_section->reloc_count > 0)
4465
    {
4466
      asection **secpp;
4467
      Elf_Internal_Sym *isym, *isymend;
4468
      bfd_size_type amt;
4469
 
4470
      internal_relocs = (_bfd_elf_link_read_relocs
4471
                         (input_bfd, input_section, NULL,
4472
                          (Elf_Internal_Rela *) NULL, FALSE));
4473
      if (internal_relocs == NULL)
4474
        goto error_return;
4475
 
4476
      if (symtab_hdr->sh_info != 0)
4477
        {
4478
          isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4479
          if (isymbuf == NULL)
4480
            isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4481
                                            symtab_hdr->sh_info, 0,
4482
                                            NULL, NULL, NULL);
4483
          if (isymbuf == NULL)
4484
            goto error_return;
4485
        }
4486
 
4487
      amt = symtab_hdr->sh_info;
4488
      amt *= sizeof (asection *);
4489
      sections = (asection **) bfd_malloc (amt);
4490
      if (sections == NULL && amt != 0)
4491
        goto error_return;
4492
 
4493
      isymend = isymbuf + symtab_hdr->sh_info;
4494
      for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
4495
        {
4496
          asection *isec;
4497
 
4498
          if (isym->st_shndx == SHN_UNDEF)
4499
            isec = bfd_und_section_ptr;
4500
          else if (isym->st_shndx == SHN_ABS)
4501
            isec = bfd_abs_section_ptr;
4502
          else if (isym->st_shndx == SHN_COMMON)
4503
            isec = bfd_com_section_ptr;
4504
          else
4505
            isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
4506
 
4507
          *secpp = isec;
4508
        }
4509
 
4510
      if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
4511
                                     input_section, data, internal_relocs,
4512
                                     isymbuf, sections))
4513
        goto error_return;
4514
 
4515
      if (sections != NULL)
4516
        free (sections);
4517
      if (isymbuf != NULL
4518
          && symtab_hdr->contents != (unsigned char *) isymbuf)
4519
        free (isymbuf);
4520
      if (elf_section_data (input_section)->relocs != internal_relocs)
4521
        free (internal_relocs);
4522
    }
4523
 
4524
  return data;
4525
 
4526
 error_return:
4527
  if (sections != NULL)
4528
    free (sections);
4529
  if (isymbuf != NULL
4530
      && symtab_hdr->contents != (unsigned char *) isymbuf)
4531
    free (isymbuf);
4532
  if (internal_relocs != NULL
4533
      && elf_section_data (input_section)->relocs != internal_relocs)
4534
    free (internal_relocs);
4535
  return NULL;
4536
}
4537
 
4538
/* Return the base VMA address which should be subtracted from real addresses
4539
   when resolving @dtpoff relocation.
4540
   This is PT_TLS segment p_vaddr.  */
4541
 
4542
static bfd_vma
4543
dtpoff_base (struct bfd_link_info *info)
4544
{
4545
  /* If tls_sec is NULL, we should have signalled an error already.  */
4546
  if (elf_hash_table (info)->tls_sec == NULL)
4547
    return 0;
4548
  return elf_hash_table (info)->tls_sec->vma;
4549
}
4550
 
4551
/* Return the relocation value for R_SH_TLS_TPOFF32..  */
4552
 
4553
static bfd_vma
4554
tpoff (struct bfd_link_info *info, bfd_vma address)
4555
{
4556
  /* If tls_sec is NULL, we should have signalled an error already.  */
4557
  if (elf_hash_table (info)->tls_sec == NULL)
4558
    return 0;
4559
  /* SH TLS ABI is variant I and static TLS block start just after tcbhead
4560
     structure which has 2 pointer fields.  */
4561
  return (address - elf_hash_table (info)->tls_sec->vma
4562
          + align_power ((bfd_vma) 8,
4563
                         elf_hash_table (info)->tls_sec->alignment_power));
4564
}
4565
 
4566
static asection *
4567
sh_elf_gc_mark_hook (asection *sec,
4568
                     struct bfd_link_info *info,
4569
                     Elf_Internal_Rela *rel,
4570
                     struct elf_link_hash_entry *h,
4571
                     Elf_Internal_Sym *sym)
4572
{
4573
  if (h != NULL)
4574
    switch (ELF32_R_TYPE (rel->r_info))
4575
      {
4576
      case R_SH_GNU_VTINHERIT:
4577
      case R_SH_GNU_VTENTRY:
4578
        return NULL;
4579
      }
4580
 
4581
  return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4582
}
4583
 
4584
/* Update the got entry reference counts for the section being removed.  */
4585
 
4586
static bfd_boolean
4587
sh_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4588
                      asection *sec, const Elf_Internal_Rela *relocs)
4589
{
4590
  Elf_Internal_Shdr *symtab_hdr;
4591
  struct elf_link_hash_entry **sym_hashes;
4592
  bfd_signed_vma *local_got_refcounts;
4593
  const Elf_Internal_Rela *rel, *relend;
4594
 
4595
  if (info->relocatable)
4596
    return TRUE;
4597
 
4598
  elf_section_data (sec)->local_dynrel = NULL;
4599
 
4600
  symtab_hdr = &elf_symtab_hdr (abfd);
4601
  sym_hashes = elf_sym_hashes (abfd);
4602
  local_got_refcounts = elf_local_got_refcounts (abfd);
4603
 
4604
  relend = relocs + sec->reloc_count;
4605
  for (rel = relocs; rel < relend; rel++)
4606
    {
4607
      unsigned long r_symndx;
4608
      unsigned int r_type;
4609
      struct elf_link_hash_entry *h = NULL;
4610
#ifdef INCLUDE_SHMEDIA
4611
      int seen_stt_datalabel = 0;
4612
#endif
4613
 
4614
      r_symndx = ELF32_R_SYM (rel->r_info);
4615
      if (r_symndx >= symtab_hdr->sh_info)
4616
        {
4617
          struct elf_sh_link_hash_entry *eh;
4618
          struct elf_sh_dyn_relocs **pp;
4619
          struct elf_sh_dyn_relocs *p;
4620
 
4621
          h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4622
          while (h->root.type == bfd_link_hash_indirect
4623
                 || h->root.type == bfd_link_hash_warning)
4624
            {
4625
#ifdef INCLUDE_SHMEDIA
4626
              seen_stt_datalabel |= h->type == STT_DATALABEL;
4627
#endif
4628
              h = (struct elf_link_hash_entry *) h->root.u.i.link;
4629
            }
4630
          eh = (struct elf_sh_link_hash_entry *) h;
4631
          for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4632
            if (p->sec == sec)
4633
              {
4634
                /* Everything must go for SEC.  */
4635
                *pp = p->next;
4636
                break;
4637
              }
4638
        }
4639
 
4640
      r_type = ELF32_R_TYPE (rel->r_info);
4641
      switch (sh_elf_optimized_tls_reloc (info, r_type, h != NULL))
4642
        {
4643
        case R_SH_TLS_LD_32:
4644
          if (sh_elf_hash_table (info)->tls_ldm_got.refcount > 0)
4645
            sh_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
4646
          break;
4647
 
4648
        case R_SH_GOT32:
4649
        case R_SH_GOTOFF:
4650
        case R_SH_GOTPC:
4651
#ifdef INCLUDE_SHMEDIA
4652
        case R_SH_GOT_LOW16:
4653
        case R_SH_GOT_MEDLOW16:
4654
        case R_SH_GOT_MEDHI16:
4655
        case R_SH_GOT_HI16:
4656
        case R_SH_GOT10BY4:
4657
        case R_SH_GOT10BY8:
4658
        case R_SH_GOTOFF_LOW16:
4659
        case R_SH_GOTOFF_MEDLOW16:
4660
        case R_SH_GOTOFF_MEDHI16:
4661
        case R_SH_GOTOFF_HI16:
4662
        case R_SH_GOTPC_LOW16:
4663
        case R_SH_GOTPC_MEDLOW16:
4664
        case R_SH_GOTPC_MEDHI16:
4665
        case R_SH_GOTPC_HI16:
4666
#endif
4667
        case R_SH_TLS_GD_32:
4668
        case R_SH_TLS_IE_32:
4669
          if (h != NULL)
4670
            {
4671
#ifdef INCLUDE_SHMEDIA
4672
              if (seen_stt_datalabel)
4673
                {
4674
                  struct elf_sh_link_hash_entry *eh;
4675
                  eh = (struct elf_sh_link_hash_entry *) h;
4676
                  if (eh->datalabel_got.refcount > 0)
4677
                    eh->datalabel_got.refcount -= 1;
4678
                }
4679
              else
4680
#endif
4681
                if (h->got.refcount > 0)
4682
                  h->got.refcount -= 1;
4683
            }
4684
          else if (local_got_refcounts != NULL)
4685
            {
4686
#ifdef INCLUDE_SHMEDIA
4687
              if (rel->r_addend & 1)
4688
                {
4689
                  if (local_got_refcounts[symtab_hdr->sh_info + r_symndx] > 0)
4690
                    local_got_refcounts[symtab_hdr->sh_info + r_symndx] -= 1;
4691
                }
4692
              else
4693
#endif
4694
                if (local_got_refcounts[r_symndx] > 0)
4695
                  local_got_refcounts[r_symndx] -= 1;
4696
            }
4697
          break;
4698
 
4699
        case R_SH_DIR32:
4700
        case R_SH_REL32:
4701
          if (info->shared)
4702
            break;
4703
          /* Fall thru */
4704
 
4705
        case R_SH_PLT32:
4706
#ifdef INCLUDE_SHMEDIA
4707
        case R_SH_PLT_LOW16:
4708
        case R_SH_PLT_MEDLOW16:
4709
        case R_SH_PLT_MEDHI16:
4710
        case R_SH_PLT_HI16:
4711
#endif
4712
          if (h != NULL)
4713
            {
4714
              if (h->plt.refcount > 0)
4715
                h->plt.refcount -= 1;
4716
            }
4717
          break;
4718
 
4719
        case R_SH_GOTPLT32:
4720
#ifdef INCLUDE_SHMEDIA
4721
        case R_SH_GOTPLT_LOW16:
4722
        case R_SH_GOTPLT_MEDLOW16:
4723
        case R_SH_GOTPLT_MEDHI16:
4724
        case R_SH_GOTPLT_HI16:
4725
        case R_SH_GOTPLT10BY4:
4726
        case R_SH_GOTPLT10BY8:
4727
#endif
4728
          if (h != NULL)
4729
            {
4730
              struct elf_sh_link_hash_entry *eh;
4731
              eh = (struct elf_sh_link_hash_entry *) h;
4732
              if (eh->gotplt_refcount > 0)
4733
                {
4734
                  eh->gotplt_refcount -= 1;
4735
                  if (h->plt.refcount > 0)
4736
                    h->plt.refcount -= 1;
4737
                }
4738
#ifdef INCLUDE_SHMEDIA
4739
              else if (seen_stt_datalabel)
4740
                {
4741
                  if (eh->datalabel_got.refcount > 0)
4742
                    eh->datalabel_got.refcount -= 1;
4743
                }
4744
#endif
4745
              else if (h->got.refcount > 0)
4746
                h->got.refcount -= 1;
4747
            }
4748
          else if (local_got_refcounts != NULL)
4749
            {
4750
#ifdef INCLUDE_SHMEDIA
4751
              if (rel->r_addend & 1)
4752
                {
4753
                  if (local_got_refcounts[symtab_hdr->sh_info + r_symndx] > 0)
4754
                    local_got_refcounts[symtab_hdr->sh_info + r_symndx] -= 1;
4755
                }
4756
              else
4757
#endif
4758
                if (local_got_refcounts[r_symndx] > 0)
4759
                  local_got_refcounts[r_symndx] -= 1;
4760
            }
4761
          break;
4762
 
4763
        default:
4764
          break;
4765
        }
4766
    }
4767
 
4768
  return TRUE;
4769
}
4770
 
4771
/* Copy the extra info we tack onto an elf_link_hash_entry.  */
4772
 
4773
static void
4774
sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
4775
                             struct elf_link_hash_entry *dir,
4776
                             struct elf_link_hash_entry *ind)
4777
{
4778
  struct elf_sh_link_hash_entry *edir, *eind;
4779
 
4780
  edir = (struct elf_sh_link_hash_entry *) dir;
4781
  eind = (struct elf_sh_link_hash_entry *) ind;
4782
 
4783
  if (eind->dyn_relocs != NULL)
4784
    {
4785
      if (edir->dyn_relocs != NULL)
4786
        {
4787
          struct elf_sh_dyn_relocs **pp;
4788
          struct elf_sh_dyn_relocs *p;
4789
 
4790
          /* Add reloc counts against the indirect sym to the direct sym
4791
             list.  Merge any entries against the same section.  */
4792
          for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4793
            {
4794
              struct elf_sh_dyn_relocs *q;
4795
 
4796
              for (q = edir->dyn_relocs; q != NULL; q = q->next)
4797
                if (q->sec == p->sec)
4798
                  {
4799
                    q->pc_count += p->pc_count;
4800
                    q->count += p->count;
4801
                    *pp = p->next;
4802
                    break;
4803
                  }
4804
              if (q == NULL)
4805
                pp = &p->next;
4806
            }
4807
          *pp = edir->dyn_relocs;
4808
        }
4809
 
4810
      edir->dyn_relocs = eind->dyn_relocs;
4811
      eind->dyn_relocs = NULL;
4812
    }
4813
  edir->gotplt_refcount = eind->gotplt_refcount;
4814
  eind->gotplt_refcount = 0;
4815
#ifdef INCLUDE_SHMEDIA
4816
  edir->datalabel_got.refcount += eind->datalabel_got.refcount;
4817
  eind->datalabel_got.refcount = 0;
4818
#endif
4819
 
4820
  if (ind->root.type == bfd_link_hash_indirect
4821
      && dir->got.refcount <= 0)
4822
    {
4823
      edir->tls_type = eind->tls_type;
4824
      eind->tls_type = GOT_UNKNOWN;
4825
    }
4826
 
4827
  if (ind->root.type != bfd_link_hash_indirect
4828
      && dir->dynamic_adjusted)
4829
    {
4830
      /* If called to transfer flags for a weakdef during processing
4831
         of elf_adjust_dynamic_symbol, don't copy non_got_ref.
4832
         We clear it ourselves for ELIMINATE_COPY_RELOCS.  */
4833
      dir->ref_dynamic |= ind->ref_dynamic;
4834
      dir->ref_regular |= ind->ref_regular;
4835
      dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
4836
      dir->needs_plt |= ind->needs_plt;
4837
    }
4838
  else
4839
    _bfd_elf_link_hash_copy_indirect (info, dir, ind);
4840
}
4841
 
4842
static int
4843
sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
4844
                            int is_local)
4845
{
4846
  if (info->shared)
4847
    return r_type;
4848
 
4849
  switch (r_type)
4850
    {
4851
    case R_SH_TLS_GD_32:
4852
    case R_SH_TLS_IE_32:
4853
      if (is_local)
4854
        return R_SH_TLS_LE_32;
4855
      return R_SH_TLS_IE_32;
4856
    case R_SH_TLS_LD_32:
4857
      return R_SH_TLS_LE_32;
4858
    }
4859
 
4860
  return r_type;
4861
}
4862
 
4863
/* Look through the relocs for a section during the first phase.
4864
   Since we don't do .gots or .plts, we just need to consider the
4865
   virtual table relocs for gc.  */
4866
 
4867
static bfd_boolean
4868
sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
4869
                     const Elf_Internal_Rela *relocs)
4870
{
4871
  Elf_Internal_Shdr *symtab_hdr;
4872
  struct elf_link_hash_entry **sym_hashes;
4873
  struct elf_sh_link_hash_table *htab;
4874
  const Elf_Internal_Rela *rel;
4875
  const Elf_Internal_Rela *rel_end;
4876
  bfd_vma *local_got_offsets;
4877
  asection *sgot;
4878
  asection *srelgot;
4879
  asection *sreloc;
4880
  unsigned int r_type;
4881
  int tls_type, old_tls_type;
4882
 
4883
  sgot = NULL;
4884
  srelgot = NULL;
4885
  sreloc = NULL;
4886
 
4887
  if (info->relocatable)
4888
    return TRUE;
4889
 
4890
  BFD_ASSERT (is_sh_elf (abfd));
4891
 
4892
  symtab_hdr = &elf_symtab_hdr (abfd);
4893
  sym_hashes = elf_sym_hashes (abfd);
4894
 
4895
  htab = sh_elf_hash_table (info);
4896
  local_got_offsets = elf_local_got_offsets (abfd);
4897
 
4898
  rel_end = relocs + sec->reloc_count;
4899
  for (rel = relocs; rel < rel_end; rel++)
4900
    {
4901
      struct elf_link_hash_entry *h;
4902
      unsigned long r_symndx;
4903
#ifdef INCLUDE_SHMEDIA
4904
      int seen_stt_datalabel = 0;
4905
#endif
4906
 
4907
      r_symndx = ELF32_R_SYM (rel->r_info);
4908
      r_type = ELF32_R_TYPE (rel->r_info);
4909
 
4910
      if (r_symndx < symtab_hdr->sh_info)
4911
        h = NULL;
4912
      else
4913
        {
4914
          h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4915
          while (h->root.type == bfd_link_hash_indirect
4916
                 || h->root.type == bfd_link_hash_warning)
4917
            {
4918
#ifdef INCLUDE_SHMEDIA
4919
              seen_stt_datalabel |= h->type == STT_DATALABEL;
4920
#endif
4921
              h = (struct elf_link_hash_entry *) h->root.u.i.link;
4922
            }
4923
        }
4924
 
4925
      r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4926
      if (! info->shared
4927
          && r_type == R_SH_TLS_IE_32
4928
          && h != NULL
4929
          && h->root.type != bfd_link_hash_undefined
4930
          && h->root.type != bfd_link_hash_undefweak
4931
          && (h->dynindx == -1
4932
              || h->def_regular))
4933
        r_type = R_SH_TLS_LE_32;
4934
 
4935
      /* Some relocs require a global offset table.  */
4936
      if (htab->sgot == NULL)
4937
        {
4938
          switch (r_type)
4939
            {
4940
            case R_SH_GOTPLT32:
4941
            case R_SH_GOT32:
4942
            case R_SH_GOTOFF:
4943
            case R_SH_GOTPC:
4944
#ifdef INCLUDE_SHMEDIA
4945
            case R_SH_GOTPLT_LOW16:
4946
            case R_SH_GOTPLT_MEDLOW16:
4947
            case R_SH_GOTPLT_MEDHI16:
4948
            case R_SH_GOTPLT_HI16:
4949
            case R_SH_GOTPLT10BY4:
4950
            case R_SH_GOTPLT10BY8:
4951
            case R_SH_GOT_LOW16:
4952
            case R_SH_GOT_MEDLOW16:
4953
            case R_SH_GOT_MEDHI16:
4954
            case R_SH_GOT_HI16:
4955
            case R_SH_GOT10BY4:
4956
            case R_SH_GOT10BY8:
4957
            case R_SH_GOTOFF_LOW16:
4958
            case R_SH_GOTOFF_MEDLOW16:
4959
            case R_SH_GOTOFF_MEDHI16:
4960
            case R_SH_GOTOFF_HI16:
4961
            case R_SH_GOTPC_LOW16:
4962
            case R_SH_GOTPC_MEDLOW16:
4963
            case R_SH_GOTPC_MEDHI16:
4964
            case R_SH_GOTPC_HI16:
4965
#endif
4966
            case R_SH_TLS_GD_32:
4967
            case R_SH_TLS_LD_32:
4968
            case R_SH_TLS_IE_32:
4969
              if (htab->sgot == NULL)
4970
                {
4971
                  if (htab->root.dynobj == NULL)
4972
                    htab->root.dynobj = abfd;
4973
                  if (!create_got_section (htab->root.dynobj, info))
4974
                    return FALSE;
4975
                }
4976
              break;
4977
 
4978
            default:
4979
              break;
4980
            }
4981
        }
4982
 
4983
      switch (r_type)
4984
        {
4985
          /* This relocation describes the C++ object vtable hierarchy.
4986
             Reconstruct it for later use during GC.  */
4987
        case R_SH_GNU_VTINHERIT:
4988
          if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4989
            return FALSE;
4990
          break;
4991
 
4992
          /* This relocation describes which C++ vtable entries are actually
4993
             used.  Record for later use during GC.  */
4994
        case R_SH_GNU_VTENTRY:
4995
          BFD_ASSERT (h != NULL);
4996
          if (h != NULL
4997
              && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4998
            return FALSE;
4999
          break;
5000
 
5001
        case R_SH_TLS_IE_32:
5002
          if (info->shared)
5003
            info->flags |= DF_STATIC_TLS;
5004
 
5005
          /* FALLTHROUGH */
5006
        force_got:
5007
        case R_SH_TLS_GD_32:
5008
        case R_SH_GOT32:
5009
#ifdef INCLUDE_SHMEDIA
5010
        case R_SH_GOT_LOW16:
5011
        case R_SH_GOT_MEDLOW16:
5012
        case R_SH_GOT_MEDHI16:
5013
        case R_SH_GOT_HI16:
5014
        case R_SH_GOT10BY4:
5015
        case R_SH_GOT10BY8:
5016
#endif
5017
          switch (r_type)
5018
            {
5019
            default:
5020
              tls_type = GOT_NORMAL;
5021
              break;
5022
            case R_SH_TLS_GD_32:
5023
              tls_type = GOT_TLS_GD;
5024
              break;
5025
            case R_SH_TLS_IE_32:
5026
              tls_type = GOT_TLS_IE;
5027
              break;
5028
            }
5029
 
5030
          if (h != NULL)
5031
            {
5032
#ifdef INCLUDE_SHMEDIA
5033
              if (seen_stt_datalabel)
5034
                {
5035
                  struct elf_sh_link_hash_entry *eh
5036
                    = (struct elf_sh_link_hash_entry *) h;
5037
 
5038
                  eh->datalabel_got.refcount += 1;
5039
                }
5040
              else
5041
#endif
5042
                h->got.refcount += 1;
5043
              old_tls_type = sh_elf_hash_entry (h)->tls_type;
5044
            }
5045
          else
5046
            {
5047
              bfd_signed_vma *local_got_refcounts;
5048
 
5049
              /* This is a global offset table entry for a local
5050
                 symbol.  */
5051
              local_got_refcounts = elf_local_got_refcounts (abfd);
5052
              if (local_got_refcounts == NULL)
5053
                {
5054
                  bfd_size_type size;
5055
 
5056
                  size = symtab_hdr->sh_info;
5057
                  size *= sizeof (bfd_signed_vma);
5058
#ifdef INCLUDE_SHMEDIA
5059
                  /* Reserve space for both the datalabel and
5060
                     codelabel local GOT offsets.  */
5061
                  size *= 2;
5062
#endif
5063
                  size += symtab_hdr->sh_info;
5064
                  local_got_refcounts = ((bfd_signed_vma *)
5065
                                         bfd_zalloc (abfd, size));
5066
                  if (local_got_refcounts == NULL)
5067
                    return FALSE;
5068
                  elf_local_got_refcounts (abfd) = local_got_refcounts;
5069
#ifdef  INCLUDE_SHMEDIA
5070
                  /* Take care of both the datalabel and codelabel local
5071
                     GOT offsets.  */
5072
                  sh_elf_local_got_tls_type (abfd)
5073
                    = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
5074
#else
5075
                  sh_elf_local_got_tls_type (abfd)
5076
                    = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5077
#endif
5078
                }
5079
#ifdef INCLUDE_SHMEDIA
5080
              if (rel->r_addend & 1)
5081
                local_got_refcounts[symtab_hdr->sh_info + r_symndx] += 1;
5082
              else
5083
#endif
5084
                local_got_refcounts[r_symndx] += 1;
5085
              old_tls_type = sh_elf_local_got_tls_type (abfd) [r_symndx];
5086
            }
5087
 
5088
          /* If a TLS symbol is accessed using IE at least once,
5089
             there is no point to use dynamic model for it.  */
5090
          if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
5091
              && (old_tls_type != GOT_TLS_GD || tls_type != GOT_TLS_IE))
5092
            {
5093
              if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
5094
                tls_type = GOT_TLS_IE;
5095
              else
5096
                {
5097
                  (*_bfd_error_handler)
5098
                    (_("%B: `%s' accessed both as normal and thread local symbol"),
5099
                     abfd, h->root.root.string);
5100
                  return FALSE;
5101
                }
5102
            }
5103
 
5104
          if (old_tls_type != tls_type)
5105
            {
5106
              if (h != NULL)
5107
                sh_elf_hash_entry (h)->tls_type = tls_type;
5108
              else
5109
                sh_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
5110
            }
5111
 
5112
          break;
5113
 
5114
        case R_SH_TLS_LD_32:
5115
          sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5116
          break;
5117
 
5118
        case R_SH_GOTPLT32:
5119
#ifdef INCLUDE_SHMEDIA
5120
        case R_SH_GOTPLT_LOW16:
5121
        case R_SH_GOTPLT_MEDLOW16:
5122
        case R_SH_GOTPLT_MEDHI16:
5123
        case R_SH_GOTPLT_HI16:
5124
        case R_SH_GOTPLT10BY4:
5125
        case R_SH_GOTPLT10BY8:
5126
#endif
5127
          /* If this is a local symbol, we resolve it directly without
5128
             creating a procedure linkage table entry.  */
5129
 
5130
          if (h == NULL
5131
              || h->forced_local
5132
              || ! info->shared
5133
              || info->symbolic
5134
              || h->dynindx == -1)
5135
            goto force_got;
5136
 
5137
          h->needs_plt = 1;
5138
          h->plt.refcount += 1;
5139
          ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5140
 
5141
          break;
5142
 
5143
        case R_SH_PLT32:
5144
#ifdef INCLUDE_SHMEDIA
5145
        case R_SH_PLT_LOW16:
5146
        case R_SH_PLT_MEDLOW16:
5147
        case R_SH_PLT_MEDHI16:
5148
        case R_SH_PLT_HI16:
5149
#endif
5150
          /* This symbol requires a procedure linkage table entry.  We
5151
             actually build the entry in adjust_dynamic_symbol,
5152
             because this might be a case of linking PIC code which is
5153
             never referenced by a dynamic object, in which case we
5154
             don't need to generate a procedure linkage table entry
5155
             after all.  */
5156
 
5157
          /* If this is a local symbol, we resolve it directly without
5158
             creating a procedure linkage table entry.  */
5159
          if (h == NULL)
5160
            continue;
5161
 
5162
          if (h->forced_local)
5163
            break;
5164
 
5165
          h->needs_plt = 1;
5166
          h->plt.refcount += 1;
5167
          break;
5168
 
5169
        case R_SH_DIR32:
5170
        case R_SH_REL32:
5171
#ifdef INCLUDE_SHMEDIA
5172
        case R_SH_IMM_LOW16_PCREL:
5173
        case R_SH_IMM_MEDLOW16_PCREL:
5174
        case R_SH_IMM_MEDHI16_PCREL:
5175
        case R_SH_IMM_HI16_PCREL:
5176
#endif
5177
          if (h != NULL && ! info->shared)
5178
            {
5179
              h->non_got_ref = 1;
5180
              h->plt.refcount += 1;
5181
            }
5182
 
5183
          /* If we are creating a shared library, and this is a reloc
5184
             against a global symbol, or a non PC relative reloc
5185
             against a local symbol, then we need to copy the reloc
5186
             into the shared library.  However, if we are linking with
5187
             -Bsymbolic, we do not need to copy a reloc against a
5188
             global symbol which is defined in an object we are
5189
             including in the link (i.e., DEF_REGULAR is set).  At
5190
             this point we have not seen all the input files, so it is
5191
             possible that DEF_REGULAR is not set now but will be set
5192
             later (it is never cleared).  We account for that
5193
             possibility below by storing information in the
5194
             dyn_relocs field of the hash table entry. A similar
5195
             situation occurs when creating shared libraries and symbol
5196
             visibility changes render the symbol local.
5197
 
5198
             If on the other hand, we are creating an executable, we
5199
             may need to keep relocations for symbols satisfied by a
5200
             dynamic library if we manage to avoid copy relocs for the
5201
             symbol.  */
5202
          if ((info->shared
5203
               && (sec->flags & SEC_ALLOC) != 0
5204
               && (r_type != R_SH_REL32
5205
                   || (h != NULL
5206
                       && (! info->symbolic
5207
                           || h->root.type == bfd_link_hash_defweak
5208
                           || !h->def_regular))))
5209
              || (! info->shared
5210
                  && (sec->flags & SEC_ALLOC) != 0
5211
                  && h != NULL
5212
                  && (h->root.type == bfd_link_hash_defweak
5213
                      || !h->def_regular)))
5214
            {
5215
              struct elf_sh_dyn_relocs *p;
5216
              struct elf_sh_dyn_relocs **head;
5217
 
5218
              if (htab->root.dynobj == NULL)
5219
                htab->root.dynobj = abfd;
5220
 
5221
              /* When creating a shared object, we must copy these
5222
                 reloc types into the output file.  We create a reloc
5223
                 section in dynobj and make room for this reloc.  */
5224
              if (sreloc == NULL)
5225
                {
5226
                  const char *name;
5227
 
5228
                  name = (bfd_elf_string_from_elf_section
5229
                          (abfd,
5230
                           elf_elfheader (abfd)->e_shstrndx,
5231
                           elf_section_data (sec)->rel_hdr.sh_name));
5232
                  if (name == NULL)
5233
                    return FALSE;
5234
 
5235
                  BFD_ASSERT (CONST_STRNEQ (name, ".rela")
5236
                              && strcmp (bfd_get_section_name (abfd, sec),
5237
                                         name + 5) == 0);
5238
 
5239
                  sreloc = bfd_get_section_by_name (htab->root.dynobj, name);
5240
                  if (sreloc == NULL)
5241
                    {
5242
                      flagword flags;
5243
 
5244
                      flags = (SEC_HAS_CONTENTS | SEC_READONLY
5245
                               | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5246
                      if ((sec->flags & SEC_ALLOC) != 0)
5247
                        flags |= SEC_ALLOC | SEC_LOAD;
5248
                      sreloc = bfd_make_section_with_flags (htab->root.dynobj,
5249
                                                            name,
5250
                                                            flags);
5251
                      if (sreloc == NULL
5252
                          || ! bfd_set_section_alignment (htab->root.dynobj,
5253
                                                          sreloc, 2))
5254
                        return FALSE;
5255
                    }
5256
                  elf_section_data (sec)->sreloc = sreloc;
5257
                }
5258
 
5259
              /* If this is a global symbol, we count the number of
5260
                 relocations we need for this symbol.  */
5261
              if (h != NULL)
5262
                head = &((struct elf_sh_link_hash_entry *) h)->dyn_relocs;
5263
              else
5264
                {
5265
                  asection *s;
5266
                  void *vpp;
5267
 
5268
                  /* Track dynamic relocs needed for local syms too.  */
5269
                  s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
5270
                                                 sec, r_symndx);
5271
                  if (s == NULL)
5272
                    return FALSE;
5273
 
5274
                  vpp = &elf_section_data (s)->local_dynrel;
5275
                  head = (struct elf_sh_dyn_relocs **) vpp;
5276
                }
5277
 
5278
              p = *head;
5279
              if (p == NULL || p->sec != sec)
5280
                {
5281
                  bfd_size_type amt = sizeof (*p);
5282
                  p = bfd_alloc (htab->root.dynobj, amt);
5283
                  if (p == NULL)
5284
                    return FALSE;
5285
                  p->next = *head;
5286
                  *head = p;
5287
                  p->sec = sec;
5288
                  p->count = 0;
5289
                  p->pc_count = 0;
5290
                }
5291
 
5292
              p->count += 1;
5293
              if (r_type == R_SH_REL32
5294
#ifdef INCLUDE_SHMEDIA
5295
                  || r_type == R_SH_IMM_LOW16_PCREL
5296
                  || r_type == R_SH_IMM_MEDLOW16_PCREL
5297
                  || r_type == R_SH_IMM_MEDHI16_PCREL
5298
                  || r_type == R_SH_IMM_HI16_PCREL
5299
#endif
5300
                  )
5301
                p->pc_count += 1;
5302
            }
5303
 
5304
          break;
5305
 
5306
        case R_SH_TLS_LE_32:
5307
          if (info->shared)
5308
            {
5309
              (*_bfd_error_handler)
5310
                (_("%B: TLS local exec code cannot be linked into shared objects"),
5311
                 abfd);
5312
              return FALSE;
5313
            }
5314
 
5315
          break;
5316
 
5317
        case R_SH_TLS_LDO_32:
5318
          /* Nothing to do.  */
5319
          break;
5320
 
5321
        default:
5322
          break;
5323
        }
5324
    }
5325
 
5326
  return TRUE;
5327
}
5328
 
5329
#ifndef sh_elf_set_mach_from_flags
5330
static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5331
 
5332
static bfd_boolean
5333
sh_elf_set_mach_from_flags (bfd *abfd)
5334
{
5335
  flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5336
 
5337
  if (flags >= sizeof(sh_ef_bfd_table))
5338
    return FALSE;
5339
 
5340
  if (sh_ef_bfd_table[flags] == 0)
5341
    return FALSE;
5342
 
5343
  bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5344
 
5345
  return TRUE;
5346
}
5347
 
5348
 
5349
/* Reverse table lookup for sh_ef_bfd_table[].
5350
   Given a bfd MACH value from archures.c
5351
   return the equivalent ELF flags from the table.
5352
   Return -1 if no match is found.  */
5353
 
5354
int
5355
sh_elf_get_flags_from_mach (unsigned long mach)
5356
{
5357
  int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5358
 
5359
  for (; i>0; i--)
5360
    if (sh_ef_bfd_table[i] == mach)
5361
      return i;
5362
 
5363
  /* shouldn't get here */
5364
  BFD_FAIL();
5365
 
5366
  return -1;
5367
}
5368
#endif /* not sh_elf_set_mach_from_flags */
5369
 
5370
#ifndef sh_elf_set_private_flags
5371
/* Function to keep SH specific file flags.  */
5372
 
5373
static bfd_boolean
5374
sh_elf_set_private_flags (bfd *abfd, flagword flags)
5375
{
5376
  BFD_ASSERT (! elf_flags_init (abfd)
5377
              || elf_elfheader (abfd)->e_flags == flags);
5378
 
5379
  elf_elfheader (abfd)->e_flags = flags;
5380
  elf_flags_init (abfd) = TRUE;
5381
  return sh_elf_set_mach_from_flags (abfd);
5382
}
5383
#endif /* not sh_elf_set_private_flags */
5384
 
5385
#ifndef sh_elf_copy_private_data
5386
/* Copy backend specific data from one object module to another */
5387
 
5388
static bfd_boolean
5389
sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5390
{
5391
  /* Copy object attributes.  */
5392
  _bfd_elf_copy_obj_attributes (ibfd, obfd);
5393
 
5394
  if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5395
    return TRUE;
5396
 
5397
  return sh_elf_set_private_flags (obfd, elf_elfheader (ibfd)->e_flags);
5398
}
5399
#endif /* not sh_elf_copy_private_data */
5400
 
5401
#ifndef sh_elf_merge_private_data
5402
 
5403
/* This function returns the ELF architecture number that
5404
   corresponds to the given arch_sh* flags.  */
5405
 
5406
int
5407
sh_find_elf_flags (unsigned int arch_set)
5408
{
5409
  extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5410
  unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5411
 
5412
  return sh_elf_get_flags_from_mach (bfd_mach);
5413
}
5414
 
5415
/* This routine initialises the elf flags when required and
5416
   calls sh_merge_bfd_arch() to check dsp/fpu compatibility.  */
5417
 
5418
static bfd_boolean
5419
sh_elf_merge_private_data (bfd *ibfd, bfd *obfd)
5420
{
5421
  extern bfd_boolean sh_merge_bfd_arch (bfd *, bfd *);
5422
 
5423
  if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5424
    return TRUE;
5425
 
5426
  if (! elf_flags_init (obfd))
5427
    {
5428
      /* This happens when ld starts out with a 'blank' output file.  */
5429
      elf_flags_init (obfd) = TRUE;
5430
      elf_elfheader (obfd)->e_flags = EF_SH1;
5431
      sh_elf_set_mach_from_flags (obfd);
5432
    }
5433
 
5434
  if (! sh_merge_bfd_arch (ibfd, obfd))
5435
    {
5436
      _bfd_error_handler ("%B: uses instructions which are incompatible "
5437
                          "with instructions used in previous modules",
5438
                          ibfd);
5439
      bfd_set_error (bfd_error_bad_value);
5440
      return FALSE;
5441
    }
5442
 
5443
  elf_elfheader (obfd)->e_flags =
5444
    sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
5445
 
5446
  return TRUE;
5447
}
5448
#endif /* not sh_elf_merge_private_data */
5449
 
5450
/* Override the generic function because we need to store sh_elf_obj_tdata
5451
   as the specific tdata.  We set also the machine architecture from flags
5452
   here.  */
5453
 
5454
static bfd_boolean
5455
sh_elf_object_p (bfd *abfd)
5456
{
5457
  return sh_elf_set_mach_from_flags (abfd);
5458
}
5459
 
5460
/* Finish up dynamic symbol handling.  We set the contents of various
5461
   dynamic sections here.  */
5462
 
5463
static bfd_boolean
5464
sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5465
                              struct elf_link_hash_entry *h,
5466
                              Elf_Internal_Sym *sym)
5467
{
5468
  struct elf_sh_link_hash_table *htab;
5469
 
5470
  htab = sh_elf_hash_table (info);
5471
 
5472
  if (h->plt.offset != (bfd_vma) -1)
5473
    {
5474
      asection *splt;
5475
      asection *sgot;
5476
      asection *srel;
5477
 
5478
      bfd_vma plt_index;
5479
      bfd_vma got_offset;
5480
      Elf_Internal_Rela rel;
5481
      bfd_byte *loc;
5482
 
5483
      /* This symbol has an entry in the procedure linkage table.  Set
5484
         it up.  */
5485
 
5486
      BFD_ASSERT (h->dynindx != -1);
5487
 
5488
      splt = htab->splt;
5489
      sgot = htab->sgotplt;
5490
      srel = htab->srelplt;
5491
      BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
5492
 
5493
      /* Get the index in the procedure linkage table which
5494
         corresponds to this symbol.  This is the index of this symbol
5495
         in all the symbols for which we are making plt entries.  The
5496
         first entry in the procedure linkage table is reserved.  */
5497
      plt_index = get_plt_index (htab->plt_info, h->plt.offset);
5498
 
5499
      /* Get the offset into the .got table of the entry that
5500
         corresponds to this function.  Each .got entry is 4 bytes.
5501
         The first three are reserved.  */
5502
      got_offset = (plt_index + 3) * 4;
5503
 
5504
#ifdef GOT_BIAS
5505
      if (info->shared)
5506
        got_offset -= GOT_BIAS;
5507
#endif
5508
 
5509
      /* Fill in the entry in the procedure linkage table.  */
5510
      memcpy (splt->contents + h->plt.offset,
5511
              htab->plt_info->symbol_entry,
5512
              htab->plt_info->symbol_entry_size);
5513
 
5514
      if (info->shared)
5515
        install_plt_field (output_bfd, FALSE, got_offset,
5516
                           (splt->contents
5517
                            + h->plt.offset
5518
                            + htab->plt_info->symbol_fields.got_entry));
5519
      else
5520
        {
5521
          install_plt_field (output_bfd, FALSE,
5522
                             (sgot->output_section->vma
5523
                              + sgot->output_offset
5524
                              + got_offset),
5525
                             (splt->contents
5526
                              + h->plt.offset
5527
                              + htab->plt_info->symbol_fields.got_entry));
5528
          if (htab->vxworks_p)
5529
            {
5530
              unsigned int reachable_plts, plts_per_4k;
5531
              int distance;
5532
 
5533
              /* Divide the PLT into groups.  The first group contains
5534
                 REACHABLE_PLTS entries and the other groups contain
5535
                 PLTS_PER_4K entries.  Entries in the first group can
5536
                 branch directly to .plt; those in later groups branch
5537
                 to the last element of the previous group.  */
5538
              /* ??? It would be better to create multiple copies of
5539
                 the common resolver stub.  */
5540
              reachable_plts = ((4096
5541
                                 - htab->plt_info->plt0_entry_size
5542
                                 - (htab->plt_info->symbol_fields.plt + 4))
5543
                                / htab->plt_info->symbol_entry_size) + 1;
5544
              plts_per_4k = (4096 / htab->plt_info->symbol_entry_size);
5545
              if (plt_index < reachable_plts)
5546
                distance = -(h->plt.offset
5547
                             + htab->plt_info->symbol_fields.plt);
5548
              else
5549
                distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
5550
                             * htab->plt_info->symbol_entry_size);
5551
 
5552
              /* Install the 'bra' with this offset.  */
5553
              bfd_put_16 (output_bfd,
5554
                          0xa000 | (0x0fff & ((distance - 4) / 2)),
5555
                          (splt->contents
5556
                           + h->plt.offset
5557
                           + htab->plt_info->symbol_fields.plt));
5558
            }
5559
          else
5560
            install_plt_field (output_bfd, TRUE,
5561
                               splt->output_section->vma + splt->output_offset,
5562
                               (splt->contents
5563
                                + h->plt.offset
5564
                                + htab->plt_info->symbol_fields.plt));
5565
        }
5566
 
5567
#ifdef GOT_BIAS
5568
      if (info->shared)
5569
        got_offset += GOT_BIAS;
5570
#endif
5571
 
5572
      install_plt_field (output_bfd, FALSE,
5573
                         plt_index * sizeof (Elf32_External_Rela),
5574
                         (splt->contents
5575
                          + h->plt.offset
5576
                          + htab->plt_info->symbol_fields.reloc_offset));
5577
 
5578
      /* Fill in the entry in the global offset table.  */
5579
      bfd_put_32 (output_bfd,
5580
                  (splt->output_section->vma
5581
                   + splt->output_offset
5582
                   + h->plt.offset
5583
                   + htab->plt_info->symbol_resolve_offset),
5584
                  sgot->contents + got_offset);
5585
 
5586
      /* Fill in the entry in the .rela.plt section.  */
5587
      rel.r_offset = (sgot->output_section->vma
5588
                      + sgot->output_offset
5589
                      + got_offset);
5590
      rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
5591
      rel.r_addend = 0;
5592
#ifdef GOT_BIAS
5593
      rel.r_addend = GOT_BIAS;
5594
#endif
5595
      loc = srel->contents + plt_index * sizeof (Elf32_External_Rela);
5596
      bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5597
 
5598
      if (htab->vxworks_p && !info->shared)
5599
        {
5600
          /* Create the .rela.plt.unloaded relocations for this PLT entry.
5601
             Begin by pointing LOC to the first such relocation.  */
5602
          loc = (htab->srelplt2->contents
5603
                 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
5604
 
5605
          /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
5606
             for the PLT entry's pointer to the .got.plt entry.  */
5607
          rel.r_offset = (htab->splt->output_section->vma
5608
                          + htab->splt->output_offset
5609
                          + h->plt.offset
5610
                          + htab->plt_info->symbol_fields.got_entry);
5611
          rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
5612
          rel.r_addend = got_offset;
5613
          bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5614
          loc += sizeof (Elf32_External_Rela);
5615
 
5616
          /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
5617
             the .got.plt entry, which initially points to .plt.  */
5618
          rel.r_offset = (htab->sgotplt->output_section->vma
5619
                          + htab->sgotplt->output_offset
5620
                          + got_offset);
5621
          rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
5622
          rel.r_addend = 0;
5623
          bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5624
        }
5625
 
5626
      if (!h->def_regular)
5627
        {
5628
          /* Mark the symbol as undefined, rather than as defined in
5629
             the .plt section.  Leave the value alone.  */
5630
          sym->st_shndx = SHN_UNDEF;
5631
        }
5632
    }
5633
 
5634
  if (h->got.offset != (bfd_vma) -1
5635
      && sh_elf_hash_entry (h)->tls_type != GOT_TLS_GD
5636
      && sh_elf_hash_entry (h)->tls_type != GOT_TLS_IE)
5637
    {
5638
      asection *sgot;
5639
      asection *srel;
5640
      Elf_Internal_Rela rel;
5641
      bfd_byte *loc;
5642
 
5643
      /* This symbol has an entry in the global offset table.  Set it
5644
         up.  */
5645
 
5646
      sgot = htab->sgot;
5647
      srel = htab->srelgot;
5648
      BFD_ASSERT (sgot != NULL && srel != NULL);
5649
 
5650
      rel.r_offset = (sgot->output_section->vma
5651
                      + sgot->output_offset
5652
                      + (h->got.offset &~ (bfd_vma) 1));
5653
 
5654
      /* If this is a static link, or it is a -Bsymbolic link and the
5655
         symbol is defined locally or was forced to be local because
5656
         of a version file, we just want to emit a RELATIVE reloc.
5657
         The entry in the global offset table will already have been
5658
         initialized in the relocate_section function.  */
5659
      if (info->shared
5660
          && SYMBOL_REFERENCES_LOCAL (info, h))
5661
        {
5662
          rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
5663
          rel.r_addend = (h->root.u.def.value
5664
                          + h->root.u.def.section->output_section->vma
5665
                          + h->root.u.def.section->output_offset);
5666
        }
5667
      else
5668
        {
5669
          bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
5670
          rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
5671
          rel.r_addend = 0;
5672
        }
5673
 
5674
      loc = srel->contents;
5675
      loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
5676
      bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5677
    }
5678
 
5679
#ifdef INCLUDE_SHMEDIA
5680
  {
5681
    struct elf_sh_link_hash_entry *eh;
5682
 
5683
    eh = (struct elf_sh_link_hash_entry *) h;
5684
    if (eh->datalabel_got.offset != (bfd_vma) -1)
5685
      {
5686
        asection *sgot;
5687
        asection *srel;
5688
        Elf_Internal_Rela rel;
5689
        bfd_byte *loc;
5690
 
5691
        /* This symbol has a datalabel entry in the global offset table.
5692
           Set it up.  */
5693
 
5694
        sgot = htab->sgot;
5695
        srel = htab->srelgot;
5696
        BFD_ASSERT (sgot != NULL && srel != NULL);
5697
 
5698
        rel.r_offset = (sgot->output_section->vma
5699
                        + sgot->output_offset
5700
                        + (eh->datalabel_got.offset &~ (bfd_vma) 1));
5701
 
5702
        /* If this is a static link, or it is a -Bsymbolic link and the
5703
           symbol is defined locally or was forced to be local because
5704
           of a version file, we just want to emit a RELATIVE reloc.
5705
           The entry in the global offset table will already have been
5706
           initialized in the relocate_section function.  */
5707
        if (info->shared
5708
            && SYMBOL_REFERENCES_LOCAL (info, h))
5709
          {
5710
            rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
5711
            rel.r_addend = (h->root.u.def.value
5712
                            + h->root.u.def.section->output_section->vma
5713
                            + h->root.u.def.section->output_offset);
5714
          }
5715
        else
5716
          {
5717
            bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents
5718
                        + eh->datalabel_got.offset);
5719
            rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
5720
            rel.r_addend = 0;
5721
          }
5722
 
5723
        loc = srel->contents;
5724
        loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
5725
        bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5726
      }
5727
  }
5728
#endif
5729
 
5730
  if (h->needs_copy)
5731
    {
5732
      asection *s;
5733
      Elf_Internal_Rela rel;
5734
      bfd_byte *loc;
5735
 
5736
      /* This symbol needs a copy reloc.  Set it up.  */
5737
 
5738
      BFD_ASSERT (h->dynindx != -1
5739
                  && (h->root.type == bfd_link_hash_defined
5740
                      || h->root.type == bfd_link_hash_defweak));
5741
 
5742
      s = bfd_get_section_by_name (h->root.u.def.section->owner,
5743
                                   ".rela.bss");
5744
      BFD_ASSERT (s != NULL);
5745
 
5746
      rel.r_offset = (h->root.u.def.value
5747
                      + h->root.u.def.section->output_section->vma
5748
                      + h->root.u.def.section->output_offset);
5749
      rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
5750
      rel.r_addend = 0;
5751
      loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
5752
      bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5753
    }
5754
 
5755
  /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  On VxWorks,
5756
     _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
5757
     ".got" section.  */
5758
  if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5759
      || (!htab->vxworks_p && h == htab->root.hgot))
5760
    sym->st_shndx = SHN_ABS;
5761
 
5762
  return TRUE;
5763
}
5764
 
5765
/* Finish up the dynamic sections.  */
5766
 
5767
static bfd_boolean
5768
sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
5769
{
5770
  struct elf_sh_link_hash_table *htab;
5771
  asection *sgot;
5772
  asection *sdyn;
5773
 
5774
  htab = sh_elf_hash_table (info);
5775
  sgot = htab->sgotplt;
5776
  sdyn = bfd_get_section_by_name (htab->root.dynobj, ".dynamic");
5777
 
5778
  if (htab->root.dynamic_sections_created)
5779
    {
5780
      asection *splt;
5781
      Elf32_External_Dyn *dyncon, *dynconend;
5782
 
5783
      BFD_ASSERT (sgot != NULL && sdyn != NULL);
5784
 
5785
      dyncon = (Elf32_External_Dyn *) sdyn->contents;
5786
      dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5787
      for (; dyncon < dynconend; dyncon++)
5788
        {
5789
          Elf_Internal_Dyn dyn;
5790
          asection *s;
5791
#ifdef INCLUDE_SHMEDIA
5792
          const char *name;
5793
#endif
5794
 
5795
          bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
5796
 
5797
          switch (dyn.d_tag)
5798
            {
5799
            default:
5800
              if (htab->vxworks_p
5801
                  && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
5802
                bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5803
              break;
5804
 
5805
#ifdef INCLUDE_SHMEDIA
5806
            case DT_INIT:
5807
              name = info->init_function;
5808
              goto get_sym;
5809
 
5810
            case DT_FINI:
5811
              name = info->fini_function;
5812
            get_sym:
5813
              if (dyn.d_un.d_val != 0)
5814
                {
5815
                  struct elf_link_hash_entry *h;
5816
 
5817
                  h = elf_link_hash_lookup (&htab->root, name,
5818
                                            FALSE, FALSE, TRUE);
5819
                  if (h != NULL && (h->other & STO_SH5_ISA32))
5820
                    {
5821
                      dyn.d_un.d_val |= 1;
5822
                      bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5823
                    }
5824
                }
5825
              break;
5826
#endif
5827
 
5828
            case DT_PLTGOT:
5829
              s = htab->sgot->output_section;
5830
              goto get_vma;
5831
 
5832
            case DT_JMPREL:
5833
              s = htab->srelplt->output_section;
5834
            get_vma:
5835
              BFD_ASSERT (s != NULL);
5836
              dyn.d_un.d_ptr = s->vma;
5837
              bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5838
              break;
5839
 
5840
            case DT_PLTRELSZ:
5841
              s = htab->srelplt->output_section;
5842
              BFD_ASSERT (s != NULL);
5843
              dyn.d_un.d_val = s->size;
5844
              bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5845
              break;
5846
 
5847
            case DT_RELASZ:
5848
              /* My reading of the SVR4 ABI indicates that the
5849
                 procedure linkage table relocs (DT_JMPREL) should be
5850
                 included in the overall relocs (DT_RELA).  This is
5851
                 what Solaris does.  However, UnixWare can not handle
5852
                 that case.  Therefore, we override the DT_RELASZ entry
5853
                 here to make it not include the JMPREL relocs.  Since
5854
                 the linker script arranges for .rela.plt to follow all
5855
                 other relocation sections, we don't have to worry
5856
                 about changing the DT_RELA entry.  */
5857
              if (htab->srelplt != NULL)
5858
                {
5859
                  s = htab->srelplt->output_section;
5860
                  dyn.d_un.d_val -= s->size;
5861
                }
5862
              bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5863
              break;
5864
            }
5865
        }
5866
 
5867
      /* Fill in the first entry in the procedure linkage table.  */
5868
      splt = htab->splt;
5869
      if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
5870
        {
5871
          unsigned int i;
5872
 
5873
          memcpy (splt->contents,
5874
                  htab->plt_info->plt0_entry,
5875
                  htab->plt_info->plt0_entry_size);
5876
          for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
5877
            if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
5878
              install_plt_field (output_bfd, FALSE,
5879
                                 (sgot->output_section->vma
5880
                                  + sgot->output_offset
5881
                                  + (i * 4)),
5882
                                 (splt->contents
5883
                                  + htab->plt_info->plt0_got_fields[i]));
5884
 
5885
          if (htab->vxworks_p)
5886
            {
5887
              /* Finalize the .rela.plt.unloaded contents.  */
5888
              Elf_Internal_Rela rel;
5889
              bfd_byte *loc;
5890
 
5891
              /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
5892
                 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8.  */
5893
              loc = htab->srelplt2->contents;
5894
              rel.r_offset = (splt->output_section->vma
5895
                              + splt->output_offset
5896
                              + htab->plt_info->plt0_got_fields[2]);
5897
              rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
5898
              rel.r_addend = 8;
5899
              bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5900
              loc += sizeof (Elf32_External_Rela);
5901
 
5902
              /* Fix up the remaining .rela.plt.unloaded relocations.
5903
                 They may have the wrong symbol index for _G_O_T_ or
5904
                 _P_L_T_ depending on the order in which symbols were
5905
                 output.  */
5906
              while (loc < htab->srelplt2->contents + htab->srelplt2->size)
5907
                {
5908
                  /* The PLT entry's pointer to the .got.plt slot.  */
5909
                  bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
5910
                  rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
5911
                                             R_SH_DIR32);
5912
                  bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5913
                  loc += sizeof (Elf32_External_Rela);
5914
 
5915
                  /* The .got.plt slot's pointer to .plt.  */
5916
                  bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
5917
                  rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
5918
                                             R_SH_DIR32);
5919
                  bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5920
                  loc += sizeof (Elf32_External_Rela);
5921
                }
5922
            }
5923
 
5924
          /* UnixWare sets the entsize of .plt to 4, although that doesn't
5925
             really seem like the right value.  */
5926
          elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
5927
        }
5928
    }
5929
 
5930
  /* Fill in the first three entries in the global offset table.  */
5931
  if (sgot && sgot->size > 0)
5932
    {
5933
      if (sdyn == NULL)
5934
        bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
5935
      else
5936
        bfd_put_32 (output_bfd,
5937
                    sdyn->output_section->vma + sdyn->output_offset,
5938
                    sgot->contents);
5939
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
5940
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
5941
 
5942
      elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
5943
    }
5944
 
5945
  return TRUE;
5946
}
5947
 
5948
static enum elf_reloc_type_class
5949
sh_elf_reloc_type_class (const Elf_Internal_Rela *rela)
5950
{
5951
  switch ((int) ELF32_R_TYPE (rela->r_info))
5952
    {
5953
    case R_SH_RELATIVE:
5954
      return reloc_class_relative;
5955
    case R_SH_JMP_SLOT:
5956
      return reloc_class_plt;
5957
    case R_SH_COPY:
5958
      return reloc_class_copy;
5959
    default:
5960
      return reloc_class_normal;
5961
    }
5962
}
5963
 
5964
#if !defined SH_TARGET_ALREADY_DEFINED
5965
/* Support for Linux core dump NOTE sections.  */
5966
 
5967
static bfd_boolean
5968
elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
5969
{
5970
  int offset;
5971
  unsigned int size;
5972
 
5973
  switch (note->descsz)
5974
    {
5975
      default:
5976
        return FALSE;
5977
 
5978
      case 168:         /* Linux/SH */
5979
        /* pr_cursig */
5980
        elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
5981
 
5982
        /* pr_pid */
5983
        elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
5984
 
5985
        /* pr_reg */
5986
        offset = 72;
5987
        size = 92;
5988
 
5989
        break;
5990
    }
5991
 
5992
  /* Make a ".reg/999" section.  */
5993
  return _bfd_elfcore_make_pseudosection (abfd, ".reg",
5994
                                          size, note->descpos + offset);
5995
}
5996
 
5997
static bfd_boolean
5998
elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
5999
{
6000
  switch (note->descsz)
6001
    {
6002
      default:
6003
        return FALSE;
6004
 
6005
      case 124:         /* Linux/SH elf_prpsinfo */
6006
        elf_tdata (abfd)->core_program
6007
         = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
6008
        elf_tdata (abfd)->core_command
6009
         = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
6010
    }
6011
 
6012
  /* Note that for some reason, a spurious space is tacked
6013
     onto the end of the args in some (at least one anyway)
6014
     implementations, so strip it off if it exists.  */
6015
 
6016
  {
6017
    char *command = elf_tdata (abfd)->core_command;
6018
    int n = strlen (command);
6019
 
6020
    if (0 < n && command[n - 1] == ' ')
6021
      command[n - 1] = '\0';
6022
  }
6023
 
6024
  return TRUE;
6025
}
6026
#endif /* not SH_TARGET_ALREADY_DEFINED */
6027
 
6028
 
6029
/* Return address for Ith PLT stub in section PLT, for relocation REL
6030
   or (bfd_vma) -1 if it should not be included.  */
6031
 
6032
static bfd_vma
6033
sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6034
                    const arelent *rel ATTRIBUTE_UNUSED)
6035
{
6036
  const struct elf_sh_plt_info *plt_info;
6037
 
6038
  plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6039
  return plt->vma + get_plt_offset (plt_info, i);
6040
}
6041
 
6042
#if !defined SH_TARGET_ALREADY_DEFINED
6043
#define TARGET_BIG_SYM          bfd_elf32_sh_vec
6044
#define TARGET_BIG_NAME         "elf32-sh"
6045
#define TARGET_LITTLE_SYM       bfd_elf32_shl_vec
6046
#define TARGET_LITTLE_NAME      "elf32-shl"
6047
#endif
6048
 
6049
#define ELF_ARCH                bfd_arch_sh
6050
#define ELF_MACHINE_CODE        EM_SH
6051
#ifdef __QNXTARGET__
6052
#define ELF_MAXPAGESIZE         0x1000
6053
#else
6054
#define ELF_MAXPAGESIZE         0x80
6055
#endif
6056
 
6057
#define elf_symbol_leading_char '_'
6058
 
6059
#define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6060
#define bfd_elf32_bfd_reloc_name_lookup \
6061
                                        sh_elf_reloc_name_lookup
6062
#define elf_info_to_howto               sh_elf_info_to_howto
6063
#define bfd_elf32_bfd_relax_section     sh_elf_relax_section
6064
#define elf_backend_relocate_section    sh_elf_relocate_section
6065
#define bfd_elf32_bfd_get_relocated_section_contents \
6066
                                        sh_elf_get_relocated_section_contents
6067
#define bfd_elf32_mkobject              sh_elf_mkobject
6068
#define elf_backend_object_p            sh_elf_object_p
6069
#define bfd_elf32_bfd_set_private_bfd_flags \
6070
                                        sh_elf_set_private_flags
6071
#define bfd_elf32_bfd_copy_private_bfd_data \
6072
                                        sh_elf_copy_private_data
6073
#define bfd_elf32_bfd_merge_private_bfd_data \
6074
                                        sh_elf_merge_private_data
6075
 
6076
#define elf_backend_gc_mark_hook        sh_elf_gc_mark_hook
6077
#define elf_backend_gc_sweep_hook       sh_elf_gc_sweep_hook
6078
#define elf_backend_check_relocs        sh_elf_check_relocs
6079
#define elf_backend_copy_indirect_symbol \
6080
                                        sh_elf_copy_indirect_symbol
6081
#define elf_backend_create_dynamic_sections \
6082
                                        sh_elf_create_dynamic_sections
6083
#define bfd_elf32_bfd_link_hash_table_create \
6084
                                        sh_elf_link_hash_table_create
6085
#define elf_backend_adjust_dynamic_symbol \
6086
                                        sh_elf_adjust_dynamic_symbol
6087
#define elf_backend_always_size_sections \
6088
                                        sh_elf_always_size_sections
6089
#define elf_backend_size_dynamic_sections \
6090
                                        sh_elf_size_dynamic_sections
6091
#define elf_backend_omit_section_dynsym \
6092
  ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
6093
#define elf_backend_finish_dynamic_symbol \
6094
                                        sh_elf_finish_dynamic_symbol
6095
#define elf_backend_finish_dynamic_sections \
6096
                                        sh_elf_finish_dynamic_sections
6097
#define elf_backend_reloc_type_class    sh_elf_reloc_type_class
6098
#define elf_backend_plt_sym_val         sh_elf_plt_sym_val
6099
 
6100
#define elf_backend_can_gc_sections     1
6101
#define elf_backend_can_refcount        1
6102
#define elf_backend_want_got_plt        1
6103
#define elf_backend_plt_readonly        1
6104
#define elf_backend_want_plt_sym        0
6105
#define elf_backend_got_header_size     12
6106
 
6107
#if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED
6108
 
6109
#include "elf32-target.h"
6110
 
6111
/* NetBSD support.  */
6112
#undef  TARGET_BIG_SYM
6113
#define TARGET_BIG_SYM                  bfd_elf32_shnbsd_vec
6114
#undef  TARGET_BIG_NAME
6115
#define TARGET_BIG_NAME                 "elf32-sh-nbsd"
6116
#undef  TARGET_LITTLE_SYM
6117
#define TARGET_LITTLE_SYM               bfd_elf32_shlnbsd_vec
6118
#undef  TARGET_LITTLE_NAME
6119
#define TARGET_LITTLE_NAME              "elf32-shl-nbsd"
6120
#undef  ELF_MAXPAGESIZE
6121
#define ELF_MAXPAGESIZE                 0x10000
6122
#undef  ELF_COMMONPAGESIZE
6123
#undef  elf_symbol_leading_char
6124
#define elf_symbol_leading_char         0
6125
#undef  elf32_bed
6126
#define elf32_bed                       elf32_sh_nbsd_bed
6127
 
6128
#include "elf32-target.h"
6129
 
6130
 
6131
/* Linux support.  */
6132
#undef  TARGET_BIG_SYM
6133
#define TARGET_BIG_SYM                  bfd_elf32_shblin_vec
6134
#undef  TARGET_BIG_NAME
6135
#define TARGET_BIG_NAME                 "elf32-shbig-linux"
6136
#undef  TARGET_LITTLE_SYM
6137
#define TARGET_LITTLE_SYM               bfd_elf32_shlin_vec
6138
#undef  TARGET_LITTLE_NAME
6139
#define TARGET_LITTLE_NAME              "elf32-sh-linux"
6140
#undef  ELF_COMMONPAGESIZE
6141
#define ELF_COMMONPAGESIZE              0x1000
6142
 
6143
#undef  elf_backend_grok_prstatus
6144
#define elf_backend_grok_prstatus       elf32_shlin_grok_prstatus
6145
#undef  elf_backend_grok_psinfo
6146
#define elf_backend_grok_psinfo         elf32_shlin_grok_psinfo
6147
#undef  elf32_bed
6148
#define elf32_bed                       elf32_sh_lin_bed
6149
 
6150
#include "elf32-target.h"
6151
 
6152
#undef  TARGET_BIG_SYM
6153
#define TARGET_BIG_SYM                  bfd_elf32_shvxworks_vec
6154
#undef  TARGET_BIG_NAME
6155
#define TARGET_BIG_NAME                 "elf32-sh-vxworks"
6156
#undef  TARGET_LITTLE_SYM
6157
#define TARGET_LITTLE_SYM               bfd_elf32_shlvxworks_vec
6158
#undef  TARGET_LITTLE_NAME
6159
#define TARGET_LITTLE_NAME              "elf32-shl-vxworks"
6160
#undef  elf32_bed
6161
#define elf32_bed                       elf32_sh_vxworks_bed
6162
 
6163
#undef  elf_backend_want_plt_sym
6164
#define elf_backend_want_plt_sym        1
6165
#undef  elf_symbol_leading_char
6166
#define elf_symbol_leading_char         '_'
6167
#define elf_backend_want_got_underscore 1
6168
#undef  elf_backend_grok_prstatus
6169
#undef  elf_backend_grok_psinfo
6170
#undef  elf_backend_add_symbol_hook
6171
#define elf_backend_add_symbol_hook     elf_vxworks_add_symbol_hook
6172
#undef  elf_backend_link_output_symbol_hook
6173
#define elf_backend_link_output_symbol_hook \
6174
                                        elf_vxworks_link_output_symbol_hook
6175
#undef  elf_backend_emit_relocs
6176
#define elf_backend_emit_relocs         elf_vxworks_emit_relocs
6177
#undef  elf_backend_final_write_processing
6178
#define elf_backend_final_write_processing \
6179
                                        elf_vxworks_final_write_processing
6180
#undef  ELF_MAXPAGESIZE
6181
#define ELF_MAXPAGESIZE                 0x1000
6182
#undef  ELF_COMMONPAGESIZE
6183
 
6184
#include "elf32-target.h"
6185
 
6186
#endif /* neither INCLUDE_SHMEDIA nor SH_TARGET_ALREADY_DEFINED */

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