OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [bfd/] [elf32-sh.c] - Blame information for rev 231

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 227 jeremybenn
/* 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, 2009, 2010 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 plt_index)
2093
{
2094
  return info->plt0_entry_size + (plt_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_DATA)
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_DATA);
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 cache.  */
2191
  struct sym_cache sym_cache;
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
  (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2219
  == SH_ELF_DATA ? ((struct elf_sh_link_hash_table *) ((p)->hash)) : NULL)
2220
 
2221
/* Create an entry in an sh ELF linker hash table.  */
2222
 
2223
static struct bfd_hash_entry *
2224
sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2225
                          struct bfd_hash_table *table,
2226
                          const char *string)
2227
{
2228
  struct elf_sh_link_hash_entry *ret =
2229
    (struct elf_sh_link_hash_entry *) entry;
2230
 
2231
  /* Allocate the structure if it has not already been allocated by a
2232
     subclass.  */
2233
  if (ret == (struct elf_sh_link_hash_entry *) NULL)
2234
    ret = ((struct elf_sh_link_hash_entry *)
2235
           bfd_hash_allocate (table,
2236
                              sizeof (struct elf_sh_link_hash_entry)));
2237
  if (ret == (struct elf_sh_link_hash_entry *) NULL)
2238
    return (struct bfd_hash_entry *) ret;
2239
 
2240
  /* Call the allocation method of the superclass.  */
2241
  ret = ((struct elf_sh_link_hash_entry *)
2242
         _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2243
                                     table, string));
2244
  if (ret != (struct elf_sh_link_hash_entry *) NULL)
2245
    {
2246
      ret->dyn_relocs = NULL;
2247
      ret->gotplt_refcount = 0;
2248
#ifdef INCLUDE_SHMEDIA
2249
      ret->datalabel_got.refcount = ret->root.got.refcount;
2250
#endif
2251
      ret->tls_type = GOT_UNKNOWN;
2252
    }
2253
 
2254
  return (struct bfd_hash_entry *) ret;
2255
}
2256
 
2257
/* Create an sh ELF linker hash table.  */
2258
 
2259
static struct bfd_link_hash_table *
2260
sh_elf_link_hash_table_create (bfd *abfd)
2261
{
2262
  struct elf_sh_link_hash_table *ret;
2263
  bfd_size_type amt = sizeof (struct elf_sh_link_hash_table);
2264
 
2265
  ret = (struct elf_sh_link_hash_table *) bfd_malloc (amt);
2266
  if (ret == (struct elf_sh_link_hash_table *) NULL)
2267
    return NULL;
2268
 
2269
  if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2270
                                      sh_elf_link_hash_newfunc,
2271
                                      sizeof (struct elf_sh_link_hash_entry),
2272
                                      SH_ELF_DATA))
2273
    {
2274
      free (ret);
2275
      return NULL;
2276
    }
2277
 
2278
  ret->sgot = NULL;
2279
  ret->sgotplt = NULL;
2280
  ret->srelgot = NULL;
2281
  ret->splt = NULL;
2282
  ret->srelplt = NULL;
2283
  ret->sdynbss = NULL;
2284
  ret->srelbss = NULL;
2285
  ret->srelplt2 = NULL;
2286
  ret->sym_cache.abfd = NULL;
2287
  ret->tls_ldm_got.refcount = 0;
2288
  ret->plt_info = NULL;
2289
  ret->vxworks_p = vxworks_object_p (abfd);
2290
 
2291
  return &ret->root.root;
2292
}
2293
 
2294
/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2295
   shortcuts to them in our hash table.  */
2296
 
2297
static bfd_boolean
2298
create_got_section (bfd *dynobj, struct bfd_link_info *info)
2299
{
2300
  struct elf_sh_link_hash_table *htab;
2301
 
2302
  if (! _bfd_elf_create_got_section (dynobj, info))
2303
    return FALSE;
2304
 
2305
  htab = sh_elf_hash_table (info);
2306
  if (htab == NULL)
2307
    return FALSE;
2308
 
2309
  htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2310
  htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2311
  htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2312
  if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
2313
    abort ();
2314
  return TRUE;
2315
}
2316
 
2317
/* Create dynamic sections when linking against a dynamic object.  */
2318
 
2319
static bfd_boolean
2320
sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2321
{
2322
  struct elf_sh_link_hash_table *htab;
2323
  flagword flags, pltflags;
2324
  asection *s;
2325
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2326
  int ptralign = 0;
2327
 
2328
  switch (bed->s->arch_size)
2329
    {
2330
    case 32:
2331
      ptralign = 2;
2332
      break;
2333
 
2334
    case 64:
2335
      ptralign = 3;
2336
      break;
2337
 
2338
    default:
2339
      bfd_set_error (bfd_error_bad_value);
2340
      return FALSE;
2341
    }
2342
 
2343
  htab = sh_elf_hash_table (info);
2344
  if (htab == NULL)
2345
    return FALSE;
2346
 
2347
  if (htab->root.dynamic_sections_created)
2348
    return TRUE;
2349
 
2350
  /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2351
     .rel[a].bss sections.  */
2352
 
2353
  flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2354
           | SEC_LINKER_CREATED);
2355
 
2356
  pltflags = flags;
2357
  pltflags |= SEC_CODE;
2358
  if (bed->plt_not_loaded)
2359
    pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2360
  if (bed->plt_readonly)
2361
    pltflags |= SEC_READONLY;
2362
 
2363
  s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
2364
  htab->splt = s;
2365
  if (s == NULL
2366
      || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
2367
    return FALSE;
2368
 
2369
  if (bed->want_plt_sym)
2370
    {
2371
      /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2372
         .plt section.  */
2373
      struct elf_link_hash_entry *h;
2374
      struct bfd_link_hash_entry *bh = NULL;
2375
 
2376
      if (! (_bfd_generic_link_add_one_symbol
2377
             (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2378
              (bfd_vma) 0, (const char *) NULL, FALSE,
2379
              get_elf_backend_data (abfd)->collect, &bh)))
2380
        return FALSE;
2381
 
2382
      h = (struct elf_link_hash_entry *) bh;
2383
      h->def_regular = 1;
2384
      h->type = STT_OBJECT;
2385
      htab->root.hplt = h;
2386
 
2387
      if (info->shared
2388
          && ! bfd_elf_link_record_dynamic_symbol (info, h))
2389
        return FALSE;
2390
    }
2391
 
2392
  s = bfd_make_section_with_flags (abfd,
2393
                                   bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
2394
                                   flags | SEC_READONLY);
2395
  htab->srelplt = s;
2396
  if (s == NULL
2397
      || ! bfd_set_section_alignment (abfd, s, ptralign))
2398
    return FALSE;
2399
 
2400
  if (htab->sgot == NULL
2401
      && !create_got_section (abfd, info))
2402
    return FALSE;
2403
 
2404
  {
2405
    const char *secname;
2406
    char *relname;
2407
    flagword secflags;
2408
    asection *sec;
2409
 
2410
    for (sec = abfd->sections; sec; sec = sec->next)
2411
      {
2412
        secflags = bfd_get_section_flags (abfd, sec);
2413
        if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
2414
            || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
2415
          continue;
2416
        secname = bfd_get_section_name (abfd, sec);
2417
        relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6);
2418
        strcpy (relname, ".rela");
2419
        strcat (relname, secname);
2420
        if (bfd_get_section_by_name (abfd, secname))
2421
          continue;
2422
        s = bfd_make_section_with_flags (abfd, relname,
2423
                                         flags | SEC_READONLY);
2424
        if (s == NULL
2425
            || ! bfd_set_section_alignment (abfd, s, ptralign))
2426
          return FALSE;
2427
      }
2428
  }
2429
 
2430
  if (bed->want_dynbss)
2431
    {
2432
      /* The .dynbss section is a place to put symbols which are defined
2433
         by dynamic objects, are referenced by regular objects, and are
2434
         not functions.  We must allocate space for them in the process
2435
         image and use a R_*_COPY reloc to tell the dynamic linker to
2436
         initialize them at run time.  The linker script puts the .dynbss
2437
         section into the .bss section of the final image.  */
2438
      s = bfd_make_section_with_flags (abfd, ".dynbss",
2439
                                       SEC_ALLOC | SEC_LINKER_CREATED);
2440
      htab->sdynbss = s;
2441
      if (s == NULL)
2442
        return FALSE;
2443
 
2444
      /* The .rel[a].bss section holds copy relocs.  This section is not
2445
         normally needed.  We need to create it here, though, so that the
2446
         linker will map it to an output section.  We can't just create it
2447
         only if we need it, because we will not know whether we need it
2448
         until we have seen all the input files, and the first time the
2449
         main linker code calls BFD after examining all the input files
2450
         (size_dynamic_sections) the input sections have already been
2451
         mapped to the output sections.  If the section turns out not to
2452
         be needed, we can discard it later.  We will never need this
2453
         section when generating a shared object, since they do not use
2454
         copy relocs.  */
2455
      if (! info->shared)
2456
        {
2457
          s = bfd_make_section_with_flags (abfd,
2458
                                           (bed->default_use_rela_p
2459
                                            ? ".rela.bss" : ".rel.bss"),
2460
                                           flags | SEC_READONLY);
2461
          htab->srelbss = s;
2462
          if (s == NULL
2463
              || ! bfd_set_section_alignment (abfd, s, ptralign))
2464
            return FALSE;
2465
        }
2466
    }
2467
 
2468
  if (htab->vxworks_p)
2469
    {
2470
      if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2471
        return FALSE;
2472
    }
2473
 
2474
  return TRUE;
2475
}
2476
 
2477
/* Adjust a symbol defined by a dynamic object and referenced by a
2478
   regular object.  The current definition is in some section of the
2479
   dynamic object, but we're not including those sections.  We have to
2480
   change the definition to something the rest of the link can
2481
   understand.  */
2482
 
2483
static bfd_boolean
2484
sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2485
                              struct elf_link_hash_entry *h)
2486
{
2487
  struct elf_sh_link_hash_table *htab;
2488
  struct elf_sh_link_hash_entry *eh;
2489
  struct elf_sh_dyn_relocs *p;
2490
  asection *s;
2491
 
2492
  htab = sh_elf_hash_table (info);
2493
  if (htab == NULL)
2494
    return FALSE;
2495
 
2496
  /* Make sure we know what is going on here.  */
2497
  BFD_ASSERT (htab->root.dynobj != NULL
2498
              && (h->needs_plt
2499
                  || h->u.weakdef != NULL
2500
                  || (h->def_dynamic
2501
                      && h->ref_regular
2502
                      && !h->def_regular)));
2503
 
2504
  /* If this is a function, put it in the procedure linkage table.  We
2505
     will fill in the contents of the procedure linkage table later,
2506
     when we know the address of the .got section.  */
2507
  if (h->type == STT_FUNC
2508
      || h->needs_plt)
2509
    {
2510
      if (h->plt.refcount <= 0
2511
          || SYMBOL_CALLS_LOCAL (info, h)
2512
          || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2513
              && h->root.type == bfd_link_hash_undefweak))
2514
        {
2515
          /* This case can occur if we saw a PLT reloc in an input
2516
             file, but the symbol was never referred to by a dynamic
2517
             object.  In such a case, we don't actually need to build
2518
             a procedure linkage table, and we can just do a REL32
2519
             reloc instead.  */
2520
          h->plt.offset = (bfd_vma) -1;
2521
          h->needs_plt = 0;
2522
        }
2523
 
2524
      return TRUE;
2525
    }
2526
  else
2527
    h->plt.offset = (bfd_vma) -1;
2528
 
2529
  /* If this is a weak symbol, and there is a real definition, the
2530
     processor independent code will have arranged for us to see the
2531
     real definition first, and we can just use the same value.  */
2532
  if (h->u.weakdef != NULL)
2533
    {
2534
      BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2535
                  || h->u.weakdef->root.type == bfd_link_hash_defweak);
2536
      h->root.u.def.section = h->u.weakdef->root.u.def.section;
2537
      h->root.u.def.value = h->u.weakdef->root.u.def.value;
2538
      if (info->nocopyreloc)
2539
        h->non_got_ref = h->u.weakdef->non_got_ref;
2540
      return TRUE;
2541
    }
2542
 
2543
  /* This is a reference to a symbol defined by a dynamic object which
2544
     is not a function.  */
2545
 
2546
  /* If we are creating a shared library, we must presume that the
2547
     only references to the symbol are via the global offset table.
2548
     For such cases we need not do anything here; the relocations will
2549
     be handled correctly by relocate_section.  */
2550
  if (info->shared)
2551
    return TRUE;
2552
 
2553
  /* If there are no references to this symbol that do not use the
2554
     GOT, we don't need to generate a copy reloc.  */
2555
  if (!h->non_got_ref)
2556
    return TRUE;
2557
 
2558
  /* If -z nocopyreloc was given, we won't generate them either.  */
2559
  if (info->nocopyreloc)
2560
    {
2561
      h->non_got_ref = 0;
2562
      return TRUE;
2563
    }
2564
 
2565
  eh = (struct elf_sh_link_hash_entry *) h;
2566
  for (p = eh->dyn_relocs; p != NULL; p = p->next)
2567
    {
2568
      s = p->sec->output_section;
2569
      if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2570
        break;
2571
    }
2572
 
2573
  /* If we didn't find any dynamic relocs in sections which needs the
2574
     copy reloc, then we'll be keeping the dynamic relocs and avoiding
2575
     the copy reloc.  */
2576
  if (p == NULL)
2577
    {
2578
      h->non_got_ref = 0;
2579
      return TRUE;
2580
    }
2581
 
2582
  if (h->size == 0)
2583
    {
2584
      (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2585
                             h->root.root.string);
2586
      return TRUE;
2587
    }
2588
 
2589
  /* We must allocate the symbol in our .dynbss section, which will
2590
     become part of the .bss section of the executable.  There will be
2591
     an entry for this symbol in the .dynsym section.  The dynamic
2592
     object will contain position independent code, so all references
2593
     from the dynamic object to this symbol will go through the global
2594
     offset table.  The dynamic linker will use the .dynsym entry to
2595
     determine the address it must put in the global offset table, so
2596
     both the dynamic object and the regular object will refer to the
2597
     same memory location for the variable.  */
2598
 
2599
  s = htab->sdynbss;
2600
  BFD_ASSERT (s != NULL);
2601
 
2602
  /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2603
     copy the initial value out of the dynamic object and into the
2604
     runtime process image.  We need to remember the offset into the
2605
     .rela.bss section we are going to use.  */
2606
  if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2607
    {
2608
      asection *srel;
2609
 
2610
      srel = htab->srelbss;
2611
      BFD_ASSERT (srel != NULL);
2612
      srel->size += sizeof (Elf32_External_Rela);
2613
      h->needs_copy = 1;
2614
    }
2615
 
2616
  return _bfd_elf_adjust_dynamic_copy (h, s);
2617
}
2618
 
2619
/* Allocate space in .plt, .got and associated reloc sections for
2620
   dynamic relocs.  */
2621
 
2622
static bfd_boolean
2623
allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2624
{
2625
  struct bfd_link_info *info;
2626
  struct elf_sh_link_hash_table *htab;
2627
  struct elf_sh_link_hash_entry *eh;
2628
  struct elf_sh_dyn_relocs *p;
2629
 
2630
  if (h->root.type == bfd_link_hash_indirect)
2631
    return TRUE;
2632
 
2633
  if (h->root.type == bfd_link_hash_warning)
2634
    /* When warning symbols are created, they **replace** the "real"
2635
       entry in the hash table, thus we never get to see the real
2636
       symbol in a hash traversal.  So look at it now.  */
2637
    h = (struct elf_link_hash_entry *) h->root.u.i.link;
2638
 
2639
  info = (struct bfd_link_info *) inf;
2640
  htab = sh_elf_hash_table (info);
2641
  if (htab == NULL)
2642
    return FALSE;
2643
 
2644
  eh = (struct elf_sh_link_hash_entry *) h;
2645
  if ((h->got.refcount > 0
2646
       || h->forced_local)
2647
      && eh->gotplt_refcount > 0)
2648
    {
2649
      /* The symbol has been forced local, or we have some direct got refs,
2650
         so treat all the gotplt refs as got refs. */
2651
      h->got.refcount += eh->gotplt_refcount;
2652
      if (h->plt.refcount >= eh->gotplt_refcount)
2653
        h->plt.refcount -= eh->gotplt_refcount;
2654
    }
2655
 
2656
  if (htab->root.dynamic_sections_created
2657
      && h->plt.refcount > 0
2658
      && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2659
          || h->root.type != bfd_link_hash_undefweak))
2660
    {
2661
      /* Make sure this symbol is output as a dynamic symbol.
2662
         Undefined weak syms won't yet be marked as dynamic.  */
2663
      if (h->dynindx == -1
2664
          && !h->forced_local)
2665
        {
2666
          if (! bfd_elf_link_record_dynamic_symbol (info, h))
2667
            return FALSE;
2668
        }
2669
 
2670
      if (info->shared
2671
          || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2672
        {
2673
          asection *s = htab->splt;
2674
 
2675
          /* If this is the first .plt entry, make room for the special
2676
             first entry.  */
2677
          if (s->size == 0)
2678
            s->size += htab->plt_info->plt0_entry_size;
2679
 
2680
          h->plt.offset = s->size;
2681
 
2682
          /* If this symbol is not defined in a regular file, and we are
2683
             not generating a shared library, then set the symbol to this
2684
             location in the .plt.  This is required to make function
2685
             pointers compare as equal between the normal executable and
2686
             the shared library.  */
2687
          if (! info->shared
2688
              && !h->def_regular)
2689
            {
2690
              h->root.u.def.section = s;
2691
              h->root.u.def.value = h->plt.offset;
2692
            }
2693
 
2694
          /* Make room for this entry.  */
2695
          s->size += htab->plt_info->symbol_entry_size;
2696
 
2697
          /* We also need to make an entry in the .got.plt section, which
2698
             will be placed in the .got section by the linker script.  */
2699
          htab->sgotplt->size += 4;
2700
 
2701
          /* We also need to make an entry in the .rel.plt section.  */
2702
          htab->srelplt->size += sizeof (Elf32_External_Rela);
2703
 
2704
          if (htab->vxworks_p && !info->shared)
2705
            {
2706
              /* VxWorks executables have a second set of relocations
2707
                 for each PLT entry.  They go in a separate relocation
2708
                 section, which is processed by the kernel loader.  */
2709
 
2710
              /* There is a relocation for the initial PLT entry:
2711
                 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_.  */
2712
              if (h->plt.offset == htab->plt_info->plt0_entry_size)
2713
                htab->srelplt2->size += sizeof (Elf32_External_Rela);
2714
 
2715
              /* There are two extra relocations for each subsequent
2716
                 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2717
                 and an R_SH_DIR32 relocation for the PLT entry.  */
2718
              htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2719
            }
2720
        }
2721
      else
2722
        {
2723
          h->plt.offset = (bfd_vma) -1;
2724
          h->needs_plt = 0;
2725
        }
2726
    }
2727
  else
2728
    {
2729
      h->plt.offset = (bfd_vma) -1;
2730
      h->needs_plt = 0;
2731
    }
2732
 
2733
  if (h->got.refcount > 0)
2734
    {
2735
      asection *s;
2736
      bfd_boolean dyn;
2737
      int tls_type = sh_elf_hash_entry (h)->tls_type;
2738
 
2739
      /* Make sure this symbol is output as a dynamic symbol.
2740
         Undefined weak syms won't yet be marked as dynamic.  */
2741
      if (h->dynindx == -1
2742
          && !h->forced_local)
2743
        {
2744
          if (! bfd_elf_link_record_dynamic_symbol (info, h))
2745
            return FALSE;
2746
        }
2747
 
2748
      s = htab->sgot;
2749
      h->got.offset = s->size;
2750
      s->size += 4;
2751
      /* R_SH_TLS_GD needs 2 consecutive GOT slots.  */
2752
      if (tls_type == GOT_TLS_GD)
2753
        s->size += 4;
2754
      dyn = htab->root.dynamic_sections_created;
2755
      /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2756
         R_SH_TLS_GD needs one if local symbol and two if global.  */
2757
      if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2758
          || (tls_type == GOT_TLS_IE && dyn))
2759
        htab->srelgot->size += sizeof (Elf32_External_Rela);
2760
      else if (tls_type == GOT_TLS_GD)
2761
        htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2762
      else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2763
                || h->root.type != bfd_link_hash_undefweak)
2764
               && (info->shared
2765
                   || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2766
        htab->srelgot->size += sizeof (Elf32_External_Rela);
2767
    }
2768
  else
2769
    h->got.offset = (bfd_vma) -1;
2770
 
2771
#ifdef INCLUDE_SHMEDIA
2772
  if (eh->datalabel_got.refcount > 0)
2773
    {
2774
      asection *s;
2775
      bfd_boolean dyn;
2776
 
2777
      /* Make sure this symbol is output as a dynamic symbol.
2778
         Undefined weak syms won't yet be marked as dynamic.  */
2779
      if (h->dynindx == -1
2780
          && !h->forced_local)
2781
        {
2782
          if (! bfd_elf_link_record_dynamic_symbol (info, h))
2783
            return FALSE;
2784
        }
2785
 
2786
      s = htab->sgot;
2787
      eh->datalabel_got.offset = s->size;
2788
      s->size += 4;
2789
      dyn = htab->root.dynamic_sections_created;
2790
      if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2791
        htab->srelgot->size += sizeof (Elf32_External_Rela);
2792
    }
2793
  else
2794
    eh->datalabel_got.offset = (bfd_vma) -1;
2795
#endif
2796
 
2797
  if (eh->dyn_relocs == NULL)
2798
    return TRUE;
2799
 
2800
  /* In the shared -Bsymbolic case, discard space allocated for
2801
     dynamic pc-relative relocs against symbols which turn out to be
2802
     defined in regular objects.  For the normal shared case, discard
2803
     space for pc-relative relocs that have become local due to symbol
2804
     visibility changes.  */
2805
 
2806
  if (info->shared)
2807
    {
2808
      if (SYMBOL_CALLS_LOCAL (info, h))
2809
        {
2810
          struct elf_sh_dyn_relocs **pp;
2811
 
2812
          for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2813
            {
2814
              p->count -= p->pc_count;
2815
              p->pc_count = 0;
2816
              if (p->count == 0)
2817
                *pp = p->next;
2818
              else
2819
                pp = &p->next;
2820
            }
2821
        }
2822
 
2823
      if (htab->vxworks_p)
2824
        {
2825
          struct elf_sh_dyn_relocs **pp;
2826
 
2827
          for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2828
            {
2829
              if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2830
                *pp = p->next;
2831
              else
2832
                pp = &p->next;
2833
            }
2834
        }
2835
 
2836
      /* Also discard relocs on undefined weak syms with non-default
2837
         visibility.  */
2838
      if (eh->dyn_relocs != NULL
2839
          && h->root.type == bfd_link_hash_undefweak)
2840
        {
2841
          if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2842
            eh->dyn_relocs = NULL;
2843
 
2844
          /* Make sure undefined weak symbols are output as a dynamic
2845
             symbol in PIEs.  */
2846
          else if (h->dynindx == -1
2847
                   && !h->forced_local)
2848
            {
2849
              if (! bfd_elf_link_record_dynamic_symbol (info, h))
2850
                return FALSE;
2851
            }
2852
        }
2853
    }
2854
  else
2855
    {
2856
      /* For the non-shared case, discard space for relocs against
2857
         symbols which turn out to need copy relocs or are not
2858
         dynamic.  */
2859
 
2860
      if (!h->non_got_ref
2861
          && ((h->def_dynamic
2862
               && !h->def_regular)
2863
              || (htab->root.dynamic_sections_created
2864
                  && (h->root.type == bfd_link_hash_undefweak
2865
                      || h->root.type == bfd_link_hash_undefined))))
2866
        {
2867
          /* Make sure this symbol is output as a dynamic symbol.
2868
             Undefined weak syms won't yet be marked as dynamic.  */
2869
          if (h->dynindx == -1
2870
              && !h->forced_local)
2871
            {
2872
              if (! bfd_elf_link_record_dynamic_symbol (info, h))
2873
                return FALSE;
2874
            }
2875
 
2876
          /* If that succeeded, we know we'll be keeping all the
2877
             relocs.  */
2878
          if (h->dynindx != -1)
2879
            goto keep;
2880
        }
2881
 
2882
      eh->dyn_relocs = NULL;
2883
 
2884
    keep: ;
2885
    }
2886
 
2887
  /* Finally, allocate space.  */
2888
  for (p = eh->dyn_relocs; p != NULL; p = p->next)
2889
    {
2890
      asection *sreloc = elf_section_data (p->sec)->sreloc;
2891
      sreloc->size += p->count * sizeof (Elf32_External_Rela);
2892
    }
2893
 
2894
  return TRUE;
2895
}
2896
 
2897
/* Find any dynamic relocs that apply to read-only sections.  */
2898
 
2899
static bfd_boolean
2900
readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2901
{
2902
  struct elf_sh_link_hash_entry *eh;
2903
  struct elf_sh_dyn_relocs *p;
2904
 
2905
  if (h->root.type == bfd_link_hash_warning)
2906
    h = (struct elf_link_hash_entry *) h->root.u.i.link;
2907
 
2908
  eh = (struct elf_sh_link_hash_entry *) h;
2909
  for (p = eh->dyn_relocs; p != NULL; p = p->next)
2910
    {
2911
      asection *s = p->sec->output_section;
2912
 
2913
      if (s != NULL && (s->flags & SEC_READONLY) != 0)
2914
        {
2915
          struct bfd_link_info *info = (struct bfd_link_info *) inf;
2916
 
2917
          info->flags |= DF_TEXTREL;
2918
 
2919
          /* Not an error, just cut short the traversal.  */
2920
          return FALSE;
2921
        }
2922
    }
2923
  return TRUE;
2924
}
2925
 
2926
/* This function is called after all the input files have been read,
2927
   and the input sections have been assigned to output sections.
2928
   It's a convenient place to determine the PLT style.  */
2929
 
2930
static bfd_boolean
2931
sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2932
{
2933
  sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd, info->shared);
2934
  return TRUE;
2935
}
2936
 
2937
/* Set the sizes of the dynamic sections.  */
2938
 
2939
static bfd_boolean
2940
sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2941
                              struct bfd_link_info *info)
2942
{
2943
  struct elf_sh_link_hash_table *htab;
2944
  bfd *dynobj;
2945
  asection *s;
2946
  bfd_boolean relocs;
2947
  bfd *ibfd;
2948
 
2949
  htab = sh_elf_hash_table (info);
2950
  if (htab == NULL)
2951
    return FALSE;
2952
 
2953
  dynobj = htab->root.dynobj;
2954
  BFD_ASSERT (dynobj != NULL);
2955
 
2956
  if (htab->root.dynamic_sections_created)
2957
    {
2958
      /* Set the contents of the .interp section to the interpreter.  */
2959
      if (info->executable)
2960
        {
2961
          s = bfd_get_section_by_name (dynobj, ".interp");
2962
          BFD_ASSERT (s != NULL);
2963
          s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2964
          s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2965
        }
2966
    }
2967
 
2968
  /* Set up .got offsets for local syms, and space for local dynamic
2969
     relocs.  */
2970
  for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2971
    {
2972
      bfd_signed_vma *local_got;
2973
      bfd_signed_vma *end_local_got;
2974
      char *local_tls_type;
2975
      bfd_size_type locsymcount;
2976
      Elf_Internal_Shdr *symtab_hdr;
2977
      asection *srel;
2978
 
2979
      if (! is_sh_elf (ibfd))
2980
        continue;
2981
 
2982
      for (s = ibfd->sections; s != NULL; s = s->next)
2983
        {
2984
          struct elf_sh_dyn_relocs *p;
2985
 
2986
          for (p = ((struct elf_sh_dyn_relocs *)
2987
                    elf_section_data (s)->local_dynrel);
2988
               p != NULL;
2989
               p = p->next)
2990
            {
2991
              if (! bfd_is_abs_section (p->sec)
2992
                  && bfd_is_abs_section (p->sec->output_section))
2993
                {
2994
                  /* Input section has been discarded, either because
2995
                     it is a copy of a linkonce section or due to
2996
                     linker script /DISCARD/, so we'll be discarding
2997
                     the relocs too.  */
2998
                }
2999
              else if (htab->vxworks_p
3000
                       && strcmp (p->sec->output_section->name,
3001
                                  ".tls_vars") == 0)
3002
                {
3003
                  /* Relocations in vxworks .tls_vars sections are
3004
                     handled specially by the loader.  */
3005
                }
3006
              else if (p->count != 0)
3007
                {
3008
                  srel = elf_section_data (p->sec)->sreloc;
3009
                  srel->size += p->count * sizeof (Elf32_External_Rela);
3010
                  if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3011
                    info->flags |= DF_TEXTREL;
3012
                }
3013
            }
3014
        }
3015
 
3016
      local_got = elf_local_got_refcounts (ibfd);
3017
      if (!local_got)
3018
        continue;
3019
 
3020
      symtab_hdr = &elf_symtab_hdr (ibfd);
3021
      locsymcount = symtab_hdr->sh_info;
3022
#ifdef INCLUDE_SHMEDIA
3023
      /* Count datalabel local GOT.  */
3024
      locsymcount *= 2;
3025
#endif
3026
      end_local_got = local_got + locsymcount;
3027
      local_tls_type = sh_elf_local_got_tls_type (ibfd);
3028
      s = htab->sgot;
3029
      srel = htab->srelgot;
3030
      for (; local_got < end_local_got; ++local_got)
3031
        {
3032
          if (*local_got > 0)
3033
            {
3034
              *local_got = s->size;
3035
              s->size += 4;
3036
              if (*local_tls_type == GOT_TLS_GD)
3037
                s->size += 4;
3038
              if (info->shared)
3039
                srel->size += sizeof (Elf32_External_Rela);
3040
            }
3041
          else
3042
            *local_got = (bfd_vma) -1;
3043
          ++local_tls_type;
3044
        }
3045
    }
3046
 
3047
  if (htab->tls_ldm_got.refcount > 0)
3048
    {
3049
      /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3050
         relocs.  */
3051
      htab->tls_ldm_got.offset = htab->sgot->size;
3052
      htab->sgot->size += 8;
3053
      htab->srelgot->size += sizeof (Elf32_External_Rela);
3054
    }
3055
  else
3056
    htab->tls_ldm_got.offset = -1;
3057
 
3058
  /* Allocate global sym .plt and .got entries, and space for global
3059
     sym dynamic relocs.  */
3060
  elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3061
 
3062
  /* We now have determined the sizes of the various dynamic sections.
3063
     Allocate memory for them.  */
3064
  relocs = FALSE;
3065
  for (s = dynobj->sections; s != NULL; s = s->next)
3066
    {
3067
      if ((s->flags & SEC_LINKER_CREATED) == 0)
3068
        continue;
3069
 
3070
      if (s == htab->splt
3071
          || s == htab->sgot
3072
          || s == htab->sgotplt
3073
          || s == htab->sdynbss)
3074
        {
3075
          /* Strip this section if we don't need it; see the
3076
             comment below.  */
3077
        }
3078
      else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
3079
        {
3080
          if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2)
3081
            relocs = TRUE;
3082
 
3083
          /* We use the reloc_count field as a counter if we need
3084
             to copy relocs into the output file.  */
3085
          s->reloc_count = 0;
3086
        }
3087
      else
3088
        {
3089
          /* It's not one of our sections, so don't allocate space.  */
3090
          continue;
3091
        }
3092
 
3093
      if (s->size == 0)
3094
        {
3095
          /* If we don't need this section, strip it from the
3096
             output file.  This is mostly to handle .rela.bss and
3097
             .rela.plt.  We must create both sections in
3098
             create_dynamic_sections, because they must be created
3099
             before the linker maps input sections to output
3100
             sections.  The linker does that before
3101
             adjust_dynamic_symbol is called, and it is that
3102
             function which decides whether anything needs to go
3103
             into these sections.  */
3104
 
3105
          s->flags |= SEC_EXCLUDE;
3106
          continue;
3107
        }
3108
 
3109
      if ((s->flags & SEC_HAS_CONTENTS) == 0)
3110
        continue;
3111
 
3112
      /* Allocate memory for the section contents.  We use bfd_zalloc
3113
         here in case unused entries are not reclaimed before the
3114
         section's contents are written out.  This should not happen,
3115
         but this way if it does, we get a R_SH_NONE reloc instead
3116
         of garbage.  */
3117
      s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3118
      if (s->contents == NULL)
3119
        return FALSE;
3120
    }
3121
 
3122
  if (htab->root.dynamic_sections_created)
3123
    {
3124
      /* Add some entries to the .dynamic section.  We fill in the
3125
         values later, in sh_elf_finish_dynamic_sections, but we
3126
         must add the entries now so that we get the correct size for
3127
         the .dynamic section.  The DT_DEBUG entry is filled in by the
3128
         dynamic linker and used by the debugger.  */
3129
#define add_dynamic_entry(TAG, VAL) \
3130
  _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3131
 
3132
      if (info->executable)
3133
        {
3134
          if (! add_dynamic_entry (DT_DEBUG, 0))
3135
            return FALSE;
3136
        }
3137
 
3138
      if (htab->splt->size != 0)
3139
        {
3140
          if (! add_dynamic_entry (DT_PLTGOT, 0)
3141
              || ! add_dynamic_entry (DT_PLTRELSZ, 0)
3142
              || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
3143
              || ! add_dynamic_entry (DT_JMPREL, 0))
3144
            return FALSE;
3145
        }
3146
 
3147
      if (relocs)
3148
        {
3149
          if (! add_dynamic_entry (DT_RELA, 0)
3150
              || ! add_dynamic_entry (DT_RELASZ, 0)
3151
              || ! add_dynamic_entry (DT_RELAENT,
3152
                                      sizeof (Elf32_External_Rela)))
3153
            return FALSE;
3154
 
3155
          /* If any dynamic relocs apply to a read-only section,
3156
             then we need a DT_TEXTREL entry.  */
3157
          if ((info->flags & DF_TEXTREL) == 0)
3158
            elf_link_hash_traverse (&htab->root, readonly_dynrelocs, info);
3159
 
3160
          if ((info->flags & DF_TEXTREL) != 0)
3161
            {
3162
              if (! add_dynamic_entry (DT_TEXTREL, 0))
3163
                return FALSE;
3164
            }
3165
        }
3166
      if (htab->vxworks_p
3167
          && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3168
        return FALSE;
3169
    }
3170
#undef add_dynamic_entry
3171
 
3172
  return TRUE;
3173
}
3174
 
3175
/* Relocate an SH ELF section.  */
3176
 
3177
static bfd_boolean
3178
sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3179
                         bfd *input_bfd, asection *input_section,
3180
                         bfd_byte *contents, Elf_Internal_Rela *relocs,
3181
                         Elf_Internal_Sym *local_syms,
3182
                         asection **local_sections)
3183
{
3184
  struct elf_sh_link_hash_table *htab;
3185
  Elf_Internal_Shdr *symtab_hdr;
3186
  struct elf_link_hash_entry **sym_hashes;
3187
  Elf_Internal_Rela *rel, *relend;
3188
  bfd *dynobj;
3189
  bfd_vma *local_got_offsets;
3190
  asection *sgot;
3191
  asection *sgotplt;
3192
  asection *splt;
3193
  asection *sreloc;
3194
  asection *srelgot;
3195
  bfd_boolean is_vxworks_tls;
3196
 
3197
  BFD_ASSERT (is_sh_elf (input_bfd));
3198
 
3199
  htab = sh_elf_hash_table (info);
3200
  if (htab == NULL)
3201
    return FALSE;
3202
  symtab_hdr = &elf_symtab_hdr (input_bfd);
3203
  sym_hashes = elf_sym_hashes (input_bfd);
3204
  dynobj = htab->root.dynobj;
3205
  local_got_offsets = elf_local_got_offsets (input_bfd);
3206
 
3207
  sgot = htab->sgot;
3208
  sgotplt = htab->sgotplt;
3209
  splt = htab->splt;
3210
  sreloc = NULL;
3211
  srelgot = NULL;
3212
  /* We have to handle relocations in vxworks .tls_vars sections
3213
     specially, because the dynamic loader is 'weird'.  */
3214
  is_vxworks_tls = (htab->vxworks_p && info->shared
3215
                    && !strcmp (input_section->output_section->name,
3216
                                ".tls_vars"));
3217
 
3218
  rel = relocs;
3219
  relend = relocs + input_section->reloc_count;
3220
  for (; rel < relend; rel++)
3221
    {
3222
      int r_type;
3223
      reloc_howto_type *howto;
3224
      unsigned long r_symndx;
3225
      Elf_Internal_Sym *sym;
3226
      asection *sec;
3227
      struct elf_link_hash_entry *h;
3228
      bfd_vma relocation;
3229
      bfd_vma addend = (bfd_vma) 0;
3230
      bfd_reloc_status_type r;
3231
      int seen_stt_datalabel = 0;
3232
      bfd_vma off;
3233
      int tls_type;
3234
 
3235
      r_symndx = ELF32_R_SYM (rel->r_info);
3236
 
3237
      r_type = ELF32_R_TYPE (rel->r_info);
3238
 
3239
      /* Many of the relocs are only used for relaxing, and are
3240
         handled entirely by the relaxation code.  */
3241
      if (r_type >= (int) R_SH_GNU_VTINHERIT
3242
          && r_type <= (int) R_SH_LABEL)
3243
        continue;
3244
      if (r_type == (int) R_SH_NONE)
3245
        continue;
3246
 
3247
      if (r_type < 0
3248
          || r_type >= R_SH_max
3249
          || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3250
              && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3251
          || (   r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3252
              && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3253
          || (   r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3254
              && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3255
          || (   r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3256
              && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3257
          || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3258
              && r_type <= (int) R_SH_LAST_INVALID_RELOC_2))
3259
        {
3260
          bfd_set_error (bfd_error_bad_value);
3261
          return FALSE;
3262
        }
3263
 
3264
      howto = get_howto_table (output_bfd) + r_type;
3265
 
3266
      /* For relocs that aren't partial_inplace, we get the addend from
3267
         the relocation.  */
3268
      if (! howto->partial_inplace)
3269
        addend = rel->r_addend;
3270
 
3271
      h = NULL;
3272
      sym = NULL;
3273
      sec = NULL;
3274
      if (r_symndx < symtab_hdr->sh_info)
3275
        {
3276
          sym = local_syms + r_symndx;
3277
          sec = local_sections[r_symndx];
3278
          relocation = (sec->output_section->vma
3279
                        + sec->output_offset
3280
                        + sym->st_value);
3281
          /* A local symbol never has STO_SH5_ISA32, so we don't need
3282
             datalabel processing here.  Make sure this does not change
3283
             without notice.  */
3284
          if ((sym->st_other & STO_SH5_ISA32) != 0)
3285
            ((*info->callbacks->reloc_dangerous)
3286
             (info,
3287
              _("Unexpected STO_SH5_ISA32 on local symbol is not handled"),
3288
              input_bfd, input_section, rel->r_offset));
3289
 
3290
          if (sec != NULL && elf_discarded_section (sec))
3291
            /* Handled below.  */
3292
            ;
3293
          else if (info->relocatable)
3294
            {
3295
              /* This is a relocatable link.  We don't have to change
3296
                 anything, unless the reloc is against a section symbol,
3297
                 in which case we have to adjust according to where the
3298
                 section symbol winds up in the output section.  */
3299
              if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3300
                {
3301
                  if (! howto->partial_inplace)
3302
                    {
3303
                      /* For relocations with the addend in the
3304
                         relocation, we need just to update the addend.
3305
                         All real relocs are of type partial_inplace; this
3306
                         code is mostly for completeness.  */
3307
                      rel->r_addend += sec->output_offset;
3308
 
3309
                      continue;
3310
                    }
3311
 
3312
                  /* Relocs of type partial_inplace need to pick up the
3313
                     contents in the contents and add the offset resulting
3314
                     from the changed location of the section symbol.
3315
                     Using _bfd_final_link_relocate (e.g. goto
3316
                     final_link_relocate) here would be wrong, because
3317
                     relocations marked pc_relative would get the current
3318
                     location subtracted, and we must only do that at the
3319
                     final link.  */
3320
                  r = _bfd_relocate_contents (howto, input_bfd,
3321
                                              sec->output_offset
3322
                                              + sym->st_value,
3323
                                              contents + rel->r_offset);
3324
                  goto relocation_done;
3325
                }
3326
 
3327
              continue;
3328
            }
3329
          else if (! howto->partial_inplace)
3330
            {
3331
              relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3332
              addend = rel->r_addend;
3333
            }
3334
          else if ((sec->flags & SEC_MERGE)
3335
                   && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3336
            {
3337
              asection *msec;
3338
 
3339
              if (howto->rightshift || howto->src_mask != 0xffffffff)
3340
                {
3341
                  (*_bfd_error_handler)
3342
                    (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
3343
                     input_bfd, input_section,
3344
                     (long) rel->r_offset, howto->name);
3345
                  return FALSE;
3346
                }
3347
 
3348
              addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3349
              msec = sec;
3350
              addend =
3351
                _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3352
                - relocation;
3353
              addend += msec->output_section->vma + msec->output_offset;
3354
              bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3355
              addend = 0;
3356
            }
3357
        }
3358
      else
3359
        {
3360
          /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro.  */
3361
 
3362
          relocation = 0;
3363
          h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3364
          while (h->root.type == bfd_link_hash_indirect
3365
                 || h->root.type == bfd_link_hash_warning)
3366
            {
3367
#ifdef INCLUDE_SHMEDIA
3368
              /* If the reference passes a symbol marked with
3369
                 STT_DATALABEL, then any STO_SH5_ISA32 on the final value
3370
                 doesn't count.  */
3371
              seen_stt_datalabel |= h->type == STT_DATALABEL;
3372
#endif
3373
              h = (struct elf_link_hash_entry *) h->root.u.i.link;
3374
            }
3375
          if (h->root.type == bfd_link_hash_defined
3376
              || h->root.type == bfd_link_hash_defweak)
3377
            {
3378
              bfd_boolean dyn;
3379
 
3380
              dyn = htab->root.dynamic_sections_created;
3381
              sec = h->root.u.def.section;
3382
              /* In these cases, we don't need the relocation value.
3383
                 We check specially because in some obscure cases
3384
                 sec->output_section will be NULL.  */
3385
              if (r_type == R_SH_GOTPC
3386
                  || r_type == R_SH_GOTPC_LOW16
3387
                  || r_type == R_SH_GOTPC_MEDLOW16
3388
                  || r_type == R_SH_GOTPC_MEDHI16
3389
                  || r_type == R_SH_GOTPC_HI16
3390
                  || ((r_type == R_SH_PLT32
3391
                       || r_type == R_SH_PLT_LOW16
3392
                       || r_type == R_SH_PLT_MEDLOW16
3393
                       || r_type == R_SH_PLT_MEDHI16
3394
                       || r_type == R_SH_PLT_HI16)
3395
                      && h->plt.offset != (bfd_vma) -1)
3396
                  || ((r_type == R_SH_GOT32
3397
                       || r_type == R_SH_GOT_LOW16
3398
                       || r_type == R_SH_GOT_MEDLOW16
3399
                       || r_type == R_SH_GOT_MEDHI16
3400
                       || r_type == R_SH_GOT_HI16)
3401
                      && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3402
                      && (! info->shared
3403
                          || (! info->symbolic && h->dynindx != -1)
3404
                          || !h->def_regular))
3405
                  /* The cases above are those in which relocation is
3406
                     overwritten in the switch block below.  The cases
3407
                     below are those in which we must defer relocation
3408
                     to run-time, because we can't resolve absolute
3409
                     addresses when creating a shared library.  */
3410
                  || (info->shared
3411
                      && ((! info->symbolic && h->dynindx != -1)
3412
                          || !h->def_regular)
3413
                      && ((r_type == R_SH_DIR32
3414
                           && !h->forced_local)
3415
                          || (r_type == R_SH_REL32
3416
                              && !SYMBOL_CALLS_LOCAL (info, h)))
3417
                      && ((input_section->flags & SEC_ALLOC) != 0
3418
                          /* DWARF will emit R_SH_DIR32 relocations in its
3419
                             sections against symbols defined externally
3420
                             in shared libraries.  We can't do anything
3421
                             with them here.  */
3422
                          || ((input_section->flags & SEC_DEBUGGING) != 0
3423
                              && h->def_dynamic)))
3424
                  /* Dynamic relocs are not propagated for SEC_DEBUGGING
3425
                     sections because such sections are not SEC_ALLOC and
3426
                     thus ld.so will not process them.  */
3427
                  || (sec->output_section == NULL
3428
                      && ((input_section->flags & SEC_DEBUGGING) != 0
3429
                          && h->def_dynamic))
3430
                  || (sec->output_section == NULL
3431
                      && (sh_elf_hash_entry (h)->tls_type == GOT_TLS_IE
3432
                          || sh_elf_hash_entry (h)->tls_type == GOT_TLS_GD)))
3433
                ;
3434
              else if (sec->output_section != NULL)
3435
                relocation = ((h->root.u.def.value
3436
                              + sec->output_section->vma
3437
                              + sec->output_offset)
3438
                              /* A STO_SH5_ISA32 causes a "bitor 1" to the
3439
                                 symbol value, unless we've seen
3440
                                 STT_DATALABEL on the way to it.  */
3441
                              | ((h->other & STO_SH5_ISA32) != 0
3442
                                 && ! seen_stt_datalabel));
3443
              else if (!info->relocatable)
3444
                {
3445
                  (*_bfd_error_handler)
3446
                    (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3447
                     input_bfd,
3448
                     input_section,
3449
                     (long) rel->r_offset,
3450
                     howto->name,
3451
                     h->root.root.string);
3452
                  return FALSE;
3453
                }
3454
            }
3455
          else if (h->root.type == bfd_link_hash_undefweak)
3456
            ;
3457
          else if (info->unresolved_syms_in_objects == RM_IGNORE
3458
                   && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3459
            ;
3460
          else if (!info->relocatable)
3461
            {
3462
              if (! info->callbacks->undefined_symbol
3463
                  (info, h->root.root.string, input_bfd,
3464
                   input_section, rel->r_offset,
3465
                   (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
3466
                    || ELF_ST_VISIBILITY (h->other))))
3467
                return FALSE;
3468
            }
3469
        }
3470
 
3471
      if (sec != NULL && elf_discarded_section (sec))
3472
        {
3473
          /* For relocs against symbols from removed linkonce sections,
3474
             or sections discarded by a linker script, we just want the
3475
             section contents zeroed.  Avoid any special processing.  */
3476
          _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
3477
          rel->r_info = 0;
3478
          rel->r_addend = 0;
3479
          continue;
3480
        }
3481
 
3482
      if (info->relocatable)
3483
        continue;
3484
 
3485
      switch ((int) r_type)
3486
        {
3487
        final_link_relocate:
3488
          /* COFF relocs don't use the addend. The addend is used for
3489
             R_SH_DIR32 to be compatible with other compilers.  */
3490
          r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3491
                                        contents, rel->r_offset,
3492
                                        relocation, addend);
3493
          break;
3494
 
3495
        case R_SH_IND12W:
3496
          goto final_link_relocate;
3497
 
3498
        case R_SH_DIR8WPN:
3499
        case R_SH_DIR8WPZ:
3500
        case R_SH_DIR8WPL:
3501
          /* If the reloc is against the start of this section, then
3502
             the assembler has already taken care of it and the reloc
3503
             is here only to assist in relaxing.  If the reloc is not
3504
             against the start of this section, then it's against an
3505
             external symbol and we must deal with it ourselves.  */
3506
          if (input_section->output_section->vma + input_section->output_offset
3507
              != relocation)
3508
            {
3509
              int disp = (relocation
3510
                          - input_section->output_section->vma
3511
                          - input_section->output_offset
3512
                          - rel->r_offset);
3513
              int mask = 0;
3514
              switch (r_type)
3515
                {
3516
                case R_SH_DIR8WPN:
3517
                case R_SH_DIR8WPZ: mask = 1; break;
3518
                case R_SH_DIR8WPL: mask = 3; break;
3519
                default: mask = 0; break;
3520
                }
3521
              if (disp & mask)
3522
                {
3523
                  ((*_bfd_error_handler)
3524
                   (_("%B: 0x%lx: fatal: unaligned branch target for relax-support relocation"),
3525
                    input_section->owner,
3526
                    (unsigned long) rel->r_offset));
3527
                  bfd_set_error (bfd_error_bad_value);
3528
                  return FALSE;
3529
                }
3530
              relocation -= 4;
3531
              goto final_link_relocate;
3532
            }
3533
          r = bfd_reloc_ok;
3534
          break;
3535
 
3536
        default:
3537
#ifdef INCLUDE_SHMEDIA
3538
          if (shmedia_prepare_reloc (info, input_bfd, input_section,
3539
                                     contents, rel, &relocation))
3540
            goto final_link_relocate;
3541
#endif
3542
          bfd_set_error (bfd_error_bad_value);
3543
          return FALSE;
3544
 
3545
        case R_SH_DIR16:
3546
        case R_SH_DIR8:
3547
        case R_SH_DIR8U:
3548
        case R_SH_DIR8S:
3549
        case R_SH_DIR4U:
3550
          goto final_link_relocate;
3551
 
3552
        case R_SH_DIR8UL:
3553
        case R_SH_DIR4UL:
3554
          if (relocation & 3)
3555
            {
3556
              ((*_bfd_error_handler)
3557
               (_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
3558
                input_section->owner,
3559
                (unsigned long) rel->r_offset, howto->name,
3560
                (unsigned long) relocation));
3561
              bfd_set_error (bfd_error_bad_value);
3562
              return FALSE;
3563
            }
3564
          goto final_link_relocate;
3565
 
3566
        case R_SH_DIR8UW:
3567
        case R_SH_DIR8SW:
3568
        case R_SH_DIR4UW:
3569
          if (relocation & 1)
3570
            {
3571
              ((*_bfd_error_handler)
3572
               (_("%B: 0x%lx: fatal: unaligned %s relocation 0x%lx"),
3573
                input_section->owner,
3574
                (unsigned long) rel->r_offset, howto->name,
3575
                (unsigned long) relocation));
3576
              bfd_set_error (bfd_error_bad_value);
3577
              return FALSE;
3578
            }
3579
          goto final_link_relocate;
3580
 
3581
        case R_SH_PSHA:
3582
          if ((signed int)relocation < -32
3583
              || (signed int)relocation > 32)
3584
            {
3585
              ((*_bfd_error_handler)
3586
               (_("%B: 0x%lx: fatal: R_SH_PSHA relocation %d not in range -32..32"),
3587
                input_section->owner,
3588
                (unsigned long) rel->r_offset,
3589
                (unsigned long) relocation));
3590
              bfd_set_error (bfd_error_bad_value);
3591
              return FALSE;
3592
            }
3593
          goto final_link_relocate;
3594
 
3595
        case R_SH_PSHL:
3596
          if ((signed int)relocation < -16
3597
              || (signed int)relocation > 16)
3598
            {
3599
              ((*_bfd_error_handler)
3600
               (_("%B: 0x%lx: fatal: R_SH_PSHL relocation %d not in range -32..32"),
3601
                input_section->owner,
3602
                (unsigned long) rel->r_offset,
3603
                (unsigned long) relocation));
3604
              bfd_set_error (bfd_error_bad_value);
3605
              return FALSE;
3606
            }
3607
          goto final_link_relocate;
3608
 
3609
        case R_SH_DIR32:
3610
        case R_SH_REL32:
3611
#ifdef INCLUDE_SHMEDIA
3612
        case R_SH_IMM_LOW16_PCREL:
3613
        case R_SH_IMM_MEDLOW16_PCREL:
3614
        case R_SH_IMM_MEDHI16_PCREL:
3615
        case R_SH_IMM_HI16_PCREL:
3616
#endif
3617
          if (info->shared
3618
              && (h == NULL
3619
                  || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3620
                  || h->root.type != bfd_link_hash_undefweak)
3621
              && r_symndx != 0
3622
              && (input_section->flags & SEC_ALLOC) != 0
3623
              && !is_vxworks_tls
3624
              && (r_type == R_SH_DIR32
3625
                  || !SYMBOL_CALLS_LOCAL (info, h)))
3626
            {
3627
              Elf_Internal_Rela outrel;
3628
              bfd_byte *loc;
3629
              bfd_boolean skip, relocate;
3630
 
3631
              /* When generating a shared object, these relocations
3632
                 are copied into the output file to be resolved at run
3633
                 time.  */
3634
 
3635
              if (sreloc == NULL)
3636
                {
3637
                  sreloc = _bfd_elf_get_dynamic_reloc_section
3638
                    (input_bfd, input_section, /*rela?*/ TRUE);
3639
                  if (sreloc == NULL)
3640
                    return FALSE;
3641
                }
3642
 
3643
              skip = FALSE;
3644
              relocate = FALSE;
3645
 
3646
              outrel.r_offset =
3647
                _bfd_elf_section_offset (output_bfd, info, input_section,
3648
                                         rel->r_offset);
3649
              if (outrel.r_offset == (bfd_vma) -1)
3650
                skip = TRUE;
3651
              else if (outrel.r_offset == (bfd_vma) -2)
3652
                skip = TRUE, relocate = TRUE;
3653
              outrel.r_offset += (input_section->output_section->vma
3654
                                  + input_section->output_offset);
3655
 
3656
              if (skip)
3657
                memset (&outrel, 0, sizeof outrel);
3658
              else if (r_type == R_SH_REL32)
3659
                {
3660
                  BFD_ASSERT (h != NULL && h->dynindx != -1);
3661
                  outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
3662
                  outrel.r_addend
3663
                    = (howto->partial_inplace
3664
                       ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3665
                       : addend);
3666
                }
3667
#ifdef INCLUDE_SHMEDIA
3668
              else if (r_type == R_SH_IMM_LOW16_PCREL
3669
                       || r_type == R_SH_IMM_MEDLOW16_PCREL
3670
                       || r_type == R_SH_IMM_MEDHI16_PCREL
3671
                       || r_type == R_SH_IMM_HI16_PCREL)
3672
                {
3673
                  BFD_ASSERT (h != NULL && h->dynindx != -1);
3674
                  outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3675
                  outrel.r_addend = addend;
3676
                }
3677
#endif
3678
              else
3679
                {
3680
                  /* h->dynindx may be -1 if this symbol was marked to
3681
                     become local.  */
3682
                  if (h == NULL
3683
                      || ((info->symbolic || h->dynindx == -1)
3684
                          && h->def_regular))
3685
                    {
3686
                      relocate = howto->partial_inplace;
3687
                      outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3688
                    }
3689
                  else
3690
                    {
3691
                      BFD_ASSERT (h->dynindx != -1);
3692
                      outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
3693
                    }
3694
                  outrel.r_addend = relocation;
3695
                  outrel.r_addend
3696
                    += (howto->partial_inplace
3697
                        ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3698
                        : addend);
3699
                }
3700
 
3701
              loc = sreloc->contents;
3702
              loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3703
              bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3704
 
3705
              /* If this reloc is against an external symbol, we do
3706
                 not want to fiddle with the addend.  Otherwise, we
3707
                 need to include the symbol value so that it becomes
3708
                 an addend for the dynamic reloc.  */
3709
              if (! relocate)
3710
                continue;
3711
            }
3712
          goto final_link_relocate;
3713
 
3714
        case R_SH_GOTPLT32:
3715
#ifdef INCLUDE_SHMEDIA
3716
        case R_SH_GOTPLT_LOW16:
3717
        case R_SH_GOTPLT_MEDLOW16:
3718
        case R_SH_GOTPLT_MEDHI16:
3719
        case R_SH_GOTPLT_HI16:
3720
        case R_SH_GOTPLT10BY4:
3721
        case R_SH_GOTPLT10BY8:
3722
#endif
3723
          /* Relocation is to the entry for this symbol in the
3724
             procedure linkage table.  */
3725
 
3726
          if (h == NULL
3727
              || h->forced_local
3728
              || ! info->shared
3729
              || info->symbolic
3730
              || h->dynindx == -1
3731
              || h->plt.offset == (bfd_vma) -1
3732
              || h->got.offset != (bfd_vma) -1)
3733
            goto force_got;
3734
 
3735
          /* Relocation is to the entry for this symbol in the global
3736
             offset table extension for the procedure linkage table.  */
3737
 
3738
          BFD_ASSERT (sgotplt != NULL);
3739
          relocation = (sgotplt->output_offset
3740
                        + (get_plt_index (htab->plt_info, h->plt.offset)
3741
                           + 3) * 4);
3742
 
3743
#ifdef GOT_BIAS
3744
          relocation -= GOT_BIAS;
3745
#endif
3746
 
3747
          goto final_link_relocate;
3748
 
3749
        force_got:
3750
        case R_SH_GOT32:
3751
#ifdef INCLUDE_SHMEDIA
3752
        case R_SH_GOT_LOW16:
3753
        case R_SH_GOT_MEDLOW16:
3754
        case R_SH_GOT_MEDHI16:
3755
        case R_SH_GOT_HI16:
3756
        case R_SH_GOT10BY4:
3757
        case R_SH_GOT10BY8:
3758
#endif
3759
          /* Relocation is to the entry for this symbol in the global
3760
             offset table.  */
3761
 
3762
          BFD_ASSERT (sgot != NULL);
3763
 
3764
          if (h != NULL)
3765
            {
3766
              bfd_boolean dyn;
3767
 
3768
              off = h->got.offset;
3769
#ifdef INCLUDE_SHMEDIA
3770
              if (seen_stt_datalabel)
3771
                {
3772
                  struct elf_sh_link_hash_entry *hsh;
3773
 
3774
                  hsh = (struct elf_sh_link_hash_entry *)h;
3775
                  off = hsh->datalabel_got.offset;
3776
                }
3777
#endif
3778
              BFD_ASSERT (off != (bfd_vma) -1);
3779
 
3780
              dyn = htab->root.dynamic_sections_created;
3781
              if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3782
                  || (info->shared
3783
                      && SYMBOL_REFERENCES_LOCAL (info, h))
3784
                  || (ELF_ST_VISIBILITY (h->other)
3785
                      && h->root.type == bfd_link_hash_undefweak))
3786
                {
3787
                  /* This is actually a static link, or it is a
3788
                     -Bsymbolic link and the symbol is defined
3789
                     locally, or the symbol was forced to be local
3790
                     because of a version file.  We must initialize
3791
                     this entry in the global offset table.  Since the
3792
                     offset must always be a multiple of 4, we use the
3793
                     least significant bit to record whether we have
3794
                     initialized it already.
3795
 
3796
                     When doing a dynamic link, we create a .rela.got
3797
                     relocation entry to initialize the value.  This
3798
                     is done in the finish_dynamic_symbol routine.  */
3799
                  if ((off & 1) != 0)
3800
                    off &= ~1;
3801
                  else
3802
                    {
3803
                      bfd_put_32 (output_bfd, relocation,
3804
                                  sgot->contents + off);
3805
#ifdef INCLUDE_SHMEDIA
3806
                      if (seen_stt_datalabel)
3807
                        {
3808
                          struct elf_sh_link_hash_entry *hsh;
3809
 
3810
                          hsh = (struct elf_sh_link_hash_entry *)h;
3811
                          hsh->datalabel_got.offset |= 1;
3812
                        }
3813
                      else
3814
#endif
3815
                        h->got.offset |= 1;
3816
                    }
3817
                }
3818
 
3819
              relocation = sgot->output_offset + off;
3820
            }
3821
          else
3822
            {
3823
#ifdef INCLUDE_SHMEDIA
3824
              if (rel->r_addend)
3825
                {
3826
                  BFD_ASSERT (local_got_offsets != NULL
3827
                              && (local_got_offsets[symtab_hdr->sh_info
3828
                                                    + r_symndx]
3829
                                  != (bfd_vma) -1));
3830
 
3831
                  off = local_got_offsets[symtab_hdr->sh_info
3832
                                          + r_symndx];
3833
                }
3834
              else
3835
                {
3836
#endif
3837
              BFD_ASSERT (local_got_offsets != NULL
3838
                          && local_got_offsets[r_symndx] != (bfd_vma) -1);
3839
 
3840
              off = local_got_offsets[r_symndx];
3841
#ifdef INCLUDE_SHMEDIA
3842
                }
3843
#endif
3844
 
3845
              /* The offset must always be a multiple of 4.  We use
3846
                 the least significant bit to record whether we have
3847
                 already generated the necessary reloc.  */
3848
              if ((off & 1) != 0)
3849
                off &= ~1;
3850
              else
3851
                {
3852
                  bfd_put_32 (output_bfd, relocation, sgot->contents + off);
3853
 
3854
                  if (info->shared)
3855
                    {
3856
                      Elf_Internal_Rela outrel;
3857
                      bfd_byte *loc;
3858
 
3859
                      if (srelgot == NULL)
3860
                        {
3861
                          srelgot = bfd_get_section_by_name (dynobj,
3862
                                                             ".rela.got");
3863
                          BFD_ASSERT (srelgot != NULL);
3864
                        }
3865
 
3866
                      outrel.r_offset = (sgot->output_section->vma
3867
                                         + sgot->output_offset
3868
                                         + off);
3869
                      outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3870
                      outrel.r_addend = relocation;
3871
                      loc = srelgot->contents;
3872
                      loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3873
                      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3874
                    }
3875
 
3876
#ifdef INCLUDE_SHMEDIA
3877
                  if (rel->r_addend)
3878
                    local_got_offsets[symtab_hdr->sh_info + r_symndx] |= 1;
3879
                  else
3880
#endif
3881
                    local_got_offsets[r_symndx] |= 1;
3882
                }
3883
 
3884
              relocation = sgot->output_offset + off;
3885
            }
3886
 
3887
#ifdef GOT_BIAS
3888
          relocation -= GOT_BIAS;
3889
#endif
3890
 
3891
          goto final_link_relocate;
3892
 
3893
        case R_SH_GOTOFF:
3894
#ifdef INCLUDE_SHMEDIA
3895
        case R_SH_GOTOFF_LOW16:
3896
        case R_SH_GOTOFF_MEDLOW16:
3897
        case R_SH_GOTOFF_MEDHI16:
3898
        case R_SH_GOTOFF_HI16:
3899
#endif
3900
          /* Relocation is relative to the start of the global offset
3901
             table.  */
3902
 
3903
          BFD_ASSERT (sgot != NULL);
3904
 
3905
          /* Note that sgot->output_offset is not involved in this
3906
             calculation.  We always want the start of .got.  If we
3907
             defined _GLOBAL_OFFSET_TABLE in a different way, as is
3908
             permitted by the ABI, we might have to change this
3909
             calculation.  */
3910
          relocation -= sgot->output_section->vma;
3911
 
3912
#ifdef GOT_BIAS
3913
          relocation -= GOT_BIAS;
3914
#endif
3915
 
3916
          addend = rel->r_addend;
3917
 
3918
          goto final_link_relocate;
3919
 
3920
        case R_SH_GOTPC:
3921
#ifdef INCLUDE_SHMEDIA
3922
        case R_SH_GOTPC_LOW16:
3923
        case R_SH_GOTPC_MEDLOW16:
3924
        case R_SH_GOTPC_MEDHI16:
3925
        case R_SH_GOTPC_HI16:
3926
#endif
3927
          /* Use global offset table as symbol value.  */
3928
 
3929
          BFD_ASSERT (sgot != NULL);
3930
          relocation = sgot->output_section->vma;
3931
 
3932
#ifdef GOT_BIAS
3933
          relocation += GOT_BIAS;
3934
#endif
3935
 
3936
          addend = rel->r_addend;
3937
 
3938
          goto final_link_relocate;
3939
 
3940
        case R_SH_PLT32:
3941
#ifdef INCLUDE_SHMEDIA
3942
        case R_SH_PLT_LOW16:
3943
        case R_SH_PLT_MEDLOW16:
3944
        case R_SH_PLT_MEDHI16:
3945
        case R_SH_PLT_HI16:
3946
#endif
3947
          /* Relocation is to the entry for this symbol in the
3948
             procedure linkage table.  */
3949
 
3950
          /* Resolve a PLT reloc against a local symbol directly,
3951
             without using the procedure linkage table.  */
3952
          if (h == NULL)
3953
            goto final_link_relocate;
3954
 
3955
          if (h->forced_local)
3956
            goto final_link_relocate;
3957
 
3958
          if (h->plt.offset == (bfd_vma) -1)
3959
            {
3960
              /* We didn't make a PLT entry for this symbol.  This
3961
                 happens when statically linking PIC code, or when
3962
                 using -Bsymbolic.  */
3963
              goto final_link_relocate;
3964
            }
3965
 
3966
          BFD_ASSERT (splt != NULL);
3967
          relocation = (splt->output_section->vma
3968
                        + splt->output_offset
3969
                        + h->plt.offset);
3970
 
3971
#ifdef INCLUDE_SHMEDIA
3972
          relocation++;
3973
#endif
3974
 
3975
          addend = rel->r_addend;
3976
 
3977
          goto final_link_relocate;
3978
 
3979
        case R_SH_LOOP_START:
3980
          {
3981
            static bfd_vma start, end;
3982
 
3983
            start = (relocation + rel->r_addend
3984
                     - (sec->output_section->vma + sec->output_offset));
3985
            r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
3986
                                   rel->r_offset, sec, start, end);
3987
            break;
3988
 
3989
        case R_SH_LOOP_END:
3990
            end = (relocation + rel->r_addend
3991
                   - (sec->output_section->vma + sec->output_offset));
3992
            r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
3993
                                   rel->r_offset, sec, start, end);
3994
            break;
3995
          }
3996
 
3997
        case R_SH_TLS_GD_32:
3998
        case R_SH_TLS_IE_32:
3999
          r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4000
          tls_type = GOT_UNKNOWN;
4001
          if (h == NULL && local_got_offsets)
4002
            tls_type = sh_elf_local_got_tls_type (input_bfd) [r_symndx];
4003
          else if (h != NULL)
4004
            {
4005
              tls_type = sh_elf_hash_entry (h)->tls_type;
4006
              if (! info->shared
4007
                  && (h->dynindx == -1
4008
                      || h->def_regular))
4009
                r_type = R_SH_TLS_LE_32;
4010
            }
4011
 
4012
          if (r_type == R_SH_TLS_GD_32 && tls_type == GOT_TLS_IE)
4013
            r_type = R_SH_TLS_IE_32;
4014
 
4015
          if (r_type == R_SH_TLS_LE_32)
4016
            {
4017
              bfd_vma offset;
4018
              unsigned short insn;
4019
 
4020
              if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4021
                {
4022
                  /* GD->LE transition:
4023
                       mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4024
                       jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4025
                       1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4026
                     We change it into:
4027
                       mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4028
                       nop; nop; ...
4029
                       1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:.  */
4030
 
4031
                  offset = rel->r_offset;
4032
                  BFD_ASSERT (offset >= 16);
4033
                  /* Size of GD instructions is 16 or 18.  */
4034
                  offset -= 16;
4035
                  insn = bfd_get_16 (input_bfd, contents + offset + 0);
4036
                  if ((insn & 0xff00) == 0xc700)
4037
                    {
4038
                      BFD_ASSERT (offset >= 2);
4039
                      offset -= 2;
4040
                      insn = bfd_get_16 (input_bfd, contents + offset + 0);
4041
                    }
4042
 
4043
                  BFD_ASSERT ((insn & 0xff00) == 0xd400);
4044
                  insn = bfd_get_16 (input_bfd, contents + offset + 2);
4045
                  BFD_ASSERT ((insn & 0xff00) == 0xc700);
4046
                  insn = bfd_get_16 (input_bfd, contents + offset + 4);
4047
                  BFD_ASSERT ((insn & 0xff00) == 0xd100);
4048
                  insn = bfd_get_16 (input_bfd, contents + offset + 6);
4049
                  BFD_ASSERT (insn == 0x310c);
4050
                  insn = bfd_get_16 (input_bfd, contents + offset + 8);
4051
                  BFD_ASSERT (insn == 0x410b);
4052
                  insn = bfd_get_16 (input_bfd, contents + offset + 10);
4053
                  BFD_ASSERT (insn == 0x34cc);
4054
 
4055
                  bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4056
                  bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4057
                  bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4058
                  bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4059
                  bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4060
                }
4061
              else
4062
                {
4063
                  int target;
4064
 
4065
                  /* IE->LE transition:
4066
                     mov.l 1f,r0; stc gbr,rN; mov.l @(r0,r12),rM;
4067
                     bra 2f; add ...; .align 2; 1: x@GOTTPOFF; 2:
4068
                     We change it into:
4069
                     mov.l .Ln,rM; stc gbr,rN; nop; ...;
4070
                     1: x@TPOFF; 2:.  */
4071
 
4072
                  offset = rel->r_offset;
4073
                  BFD_ASSERT (offset >= 16);
4074
                  /* Size of IE instructions is 10 or 12.  */
4075
                  offset -= 10;
4076
                  insn = bfd_get_16 (input_bfd, contents + offset + 0);
4077
                  if ((insn & 0xf0ff) == 0x0012)
4078
                    {
4079
                      BFD_ASSERT (offset >= 2);
4080
                      offset -= 2;
4081
                      insn = bfd_get_16 (input_bfd, contents + offset + 0);
4082
                    }
4083
 
4084
                  BFD_ASSERT ((insn & 0xff00) == 0xd000);
4085
                  target = insn & 0x00ff;
4086
                  insn = bfd_get_16 (input_bfd, contents + offset + 2);
4087
                  BFD_ASSERT ((insn & 0xf0ff) == 0x0012);
4088
                  insn = bfd_get_16 (input_bfd, contents + offset + 4);
4089
                  BFD_ASSERT ((insn & 0xf0ff) == 0x00ce);
4090
                  insn = 0xd000 | (insn & 0x0f00) | target;
4091
                  bfd_put_16 (output_bfd, insn, contents + offset + 0);
4092
                  bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4093
                }
4094
 
4095
              bfd_put_32 (output_bfd, tpoff (info, relocation),
4096
                          contents + rel->r_offset);
4097
              continue;
4098
            }
4099
 
4100
          sgot = htab->sgot;
4101
          if (sgot == NULL)
4102
            abort ();
4103
 
4104
          if (h != NULL)
4105
            off = h->got.offset;
4106
          else
4107
            {
4108
              if (local_got_offsets == NULL)
4109
                abort ();
4110
 
4111
              off = local_got_offsets[r_symndx];
4112
            }
4113
 
4114
          /* Relocate R_SH_TLS_IE_32 directly when statically linking.  */
4115
          if (r_type == R_SH_TLS_IE_32
4116
              && ! htab->root.dynamic_sections_created)
4117
            {
4118
              off &= ~1;
4119
              bfd_put_32 (output_bfd, tpoff (info, relocation),
4120
                          sgot->contents + off);
4121
              bfd_put_32 (output_bfd, sgot->output_offset + off,
4122
                          contents + rel->r_offset);
4123
              continue;
4124
            }
4125
 
4126
          if ((off & 1) != 0)
4127
            off &= ~1;
4128
          else
4129
            {
4130
              Elf_Internal_Rela outrel;
4131
              bfd_byte *loc;
4132
              int dr_type, indx;
4133
 
4134
              if (srelgot == NULL)
4135
                {
4136
                  srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4137
                  BFD_ASSERT (srelgot != NULL);
4138
                }
4139
 
4140
              outrel.r_offset = (sgot->output_section->vma
4141
                                 + sgot->output_offset + off);
4142
 
4143
              if (h == NULL || h->dynindx == -1)
4144
                indx = 0;
4145
              else
4146
                indx = h->dynindx;
4147
 
4148
              dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4149
                         R_SH_TLS_TPOFF32);
4150
              if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4151
                outrel.r_addend = relocation - dtpoff_base (info);
4152
              else
4153
                outrel.r_addend = 0;
4154
              outrel.r_info = ELF32_R_INFO (indx, dr_type);
4155
              loc = srelgot->contents;
4156
              loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4157
              bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4158
 
4159
              if (r_type == R_SH_TLS_GD_32)
4160
                {
4161
                  if (indx == 0)
4162
                    {
4163
                      bfd_put_32 (output_bfd,
4164
                                  relocation - dtpoff_base (info),
4165
                                  sgot->contents + off + 4);
4166
                    }
4167
                  else
4168
                    {
4169
                      outrel.r_info = ELF32_R_INFO (indx,
4170
                                                    R_SH_TLS_DTPOFF32);
4171
                      outrel.r_offset += 4;
4172
                      outrel.r_addend = 0;
4173
                      srelgot->reloc_count++;
4174
                      loc += sizeof (Elf32_External_Rela);
4175
                      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4176
                    }
4177
                }
4178
 
4179
              if (h != NULL)
4180
                h->got.offset |= 1;
4181
              else
4182
                local_got_offsets[r_symndx] |= 1;
4183
            }
4184
 
4185
          if (off >= (bfd_vma) -2)
4186
            abort ();
4187
 
4188
          if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4189
            relocation = sgot->output_offset + off;
4190
          else
4191
            {
4192
              bfd_vma offset;
4193
              unsigned short insn;
4194
 
4195
              /* GD->IE transition:
4196
                   mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4197
                   jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4198
                   1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4199
                 We change it into:
4200
                   mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4201
                   nop; nop; bra 3f; nop; .align 2;
4202
                   1: .long x@TPOFF; 2:...; 3:.  */
4203
 
4204
              offset = rel->r_offset;
4205
              BFD_ASSERT (offset >= 16);
4206
              /* Size of GD instructions is 16 or 18.  */
4207
              offset -= 16;
4208
              insn = bfd_get_16 (input_bfd, contents + offset + 0);
4209
              if ((insn & 0xff00) == 0xc700)
4210
                {
4211
                  BFD_ASSERT (offset >= 2);
4212
                  offset -= 2;
4213
                  insn = bfd_get_16 (input_bfd, contents + offset + 0);
4214
                }
4215
 
4216
              BFD_ASSERT ((insn & 0xff00) == 0xd400);
4217
 
4218
              /* Replace mov.l 1f,R4 with mov.l 1f,r0.  */
4219
              bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4220
 
4221
              insn = bfd_get_16 (input_bfd, contents + offset + 2);
4222
              BFD_ASSERT ((insn & 0xff00) == 0xc700);
4223
              insn = bfd_get_16 (input_bfd, contents + offset + 4);
4224
              BFD_ASSERT ((insn & 0xff00) == 0xd100);
4225
              insn = bfd_get_16 (input_bfd, contents + offset + 6);
4226
              BFD_ASSERT (insn == 0x310c);
4227
              insn = bfd_get_16 (input_bfd, contents + offset + 8);
4228
              BFD_ASSERT (insn == 0x410b);
4229
              insn = bfd_get_16 (input_bfd, contents + offset + 10);
4230
              BFD_ASSERT (insn == 0x34cc);
4231
 
4232
              bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4233
              bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4234
              bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4235
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4236
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4237
 
4238
              bfd_put_32 (output_bfd, sgot->output_offset + off,
4239
                          contents + rel->r_offset);
4240
 
4241
              continue;
4242
          }
4243
 
4244
          addend = rel->r_addend;
4245
 
4246
          goto final_link_relocate;
4247
 
4248
        case R_SH_TLS_LD_32:
4249
          if (! info->shared)
4250
            {
4251
              bfd_vma offset;
4252
              unsigned short insn;
4253
 
4254
              /* LD->LE transition:
4255
                   mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4256
                   jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4257
                   1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4258
                 We change it into:
4259
                   stc gbr,r0; nop; nop; nop;
4260
                   nop; nop; bra 3f; ...; 3:.  */
4261
 
4262
              offset = rel->r_offset;
4263
              BFD_ASSERT (offset >= 16);
4264
              /* Size of LD instructions is 16 or 18.  */
4265
              offset -= 16;
4266
              insn = bfd_get_16 (input_bfd, contents + offset + 0);
4267
              if ((insn & 0xff00) == 0xc700)
4268
                {
4269
                  BFD_ASSERT (offset >= 2);
4270
                  offset -= 2;
4271
                  insn = bfd_get_16 (input_bfd, contents + offset + 0);
4272
                }
4273
 
4274
              BFD_ASSERT ((insn & 0xff00) == 0xd400);
4275
              insn = bfd_get_16 (input_bfd, contents + offset + 2);
4276
              BFD_ASSERT ((insn & 0xff00) == 0xc700);
4277
              insn = bfd_get_16 (input_bfd, contents + offset + 4);
4278
              BFD_ASSERT ((insn & 0xff00) == 0xd100);
4279
              insn = bfd_get_16 (input_bfd, contents + offset + 6);
4280
              BFD_ASSERT (insn == 0x310c);
4281
              insn = bfd_get_16 (input_bfd, contents + offset + 8);
4282
              BFD_ASSERT (insn == 0x410b);
4283
              insn = bfd_get_16 (input_bfd, contents + offset + 10);
4284
              BFD_ASSERT (insn == 0x34cc);
4285
 
4286
              bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
4287
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
4288
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4289
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4290
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4291
              bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4292
 
4293
              continue;
4294
            }
4295
 
4296
          sgot = htab->sgot;
4297
          if (sgot == NULL)
4298
            abort ();
4299
 
4300
          off = htab->tls_ldm_got.offset;
4301
          if (off & 1)
4302
            off &= ~1;
4303
          else
4304
            {
4305
              Elf_Internal_Rela outrel;
4306
              bfd_byte *loc;
4307
 
4308
              srelgot = htab->srelgot;
4309
              if (srelgot == NULL)
4310
                abort ();
4311
 
4312
              outrel.r_offset = (sgot->output_section->vma
4313
                                 + sgot->output_offset + off);
4314
              outrel.r_addend = 0;
4315
              outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
4316
              loc = srelgot->contents;
4317
              loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4318
              bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4319
              htab->tls_ldm_got.offset |= 1;
4320
            }
4321
 
4322
          relocation = sgot->output_offset + off;
4323
          addend = rel->r_addend;
4324
 
4325
          goto final_link_relocate;
4326
 
4327
        case R_SH_TLS_LDO_32:
4328
          if (! info->shared)
4329
            relocation = tpoff (info, relocation);
4330
          else
4331
            relocation -= dtpoff_base (info);
4332
 
4333
          addend = rel->r_addend;
4334
          goto final_link_relocate;
4335
 
4336
        case R_SH_TLS_LE_32:
4337
          {
4338
            int indx;
4339
            Elf_Internal_Rela outrel;
4340
            bfd_byte *loc;
4341
 
4342
            if (! info->shared)
4343
              {
4344
                relocation = tpoff (info, relocation);
4345
                addend = rel->r_addend;
4346
                goto final_link_relocate;
4347
              }
4348
 
4349
            if (sreloc == NULL)
4350
              {
4351
                sreloc = _bfd_elf_get_dynamic_reloc_section
4352
                  (input_bfd, input_section, /*rela?*/ TRUE);
4353
                if (sreloc == NULL)
4354
                  return FALSE;
4355
              }
4356
 
4357
            if (h == NULL || h->dynindx == -1)
4358
              indx = 0;
4359
            else
4360
              indx = h->dynindx;
4361
 
4362
            outrel.r_offset = (input_section->output_section->vma
4363
                               + input_section->output_offset
4364
                               + rel->r_offset);
4365
            outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
4366
            if (indx == 0)
4367
              outrel.r_addend = relocation - dtpoff_base (info);
4368
            else
4369
              outrel.r_addend = 0;
4370
 
4371
            loc = sreloc->contents;
4372
            loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4373
            bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4374
            continue;
4375
          }
4376
        }
4377
 
4378
    relocation_done:
4379
      if (r != bfd_reloc_ok)
4380
        {
4381
          switch (r)
4382
            {
4383
            default:
4384
            case bfd_reloc_outofrange:
4385
              abort ();
4386
            case bfd_reloc_overflow:
4387
              {
4388
                const char *name;
4389
 
4390
                if (h != NULL)
4391
                  name = NULL;
4392
                else
4393
                  {
4394
                    name = (bfd_elf_string_from_elf_section
4395
                            (input_bfd, symtab_hdr->sh_link, sym->st_name));
4396
                    if (name == NULL)
4397
                      return FALSE;
4398
                    if (*name == '\0')
4399
                      name = bfd_section_name (input_bfd, sec);
4400
                  }
4401
                if (! ((*info->callbacks->reloc_overflow)
4402
                       (info, (h ? &h->root : NULL), name, howto->name,
4403
                        (bfd_vma) 0, input_bfd, input_section,
4404
                        rel->r_offset)))
4405
                  return FALSE;
4406
              }
4407
              break;
4408
            }
4409
        }
4410
    }
4411
 
4412
  return TRUE;
4413
}
4414
 
4415
/* This is a version of bfd_generic_get_relocated_section_contents
4416
   which uses sh_elf_relocate_section.  */
4417
 
4418
static bfd_byte *
4419
sh_elf_get_relocated_section_contents (bfd *output_bfd,
4420
                                       struct bfd_link_info *link_info,
4421
                                       struct bfd_link_order *link_order,
4422
                                       bfd_byte *data,
4423
                                       bfd_boolean relocatable,
4424
                                       asymbol **symbols)
4425
{
4426
  Elf_Internal_Shdr *symtab_hdr;
4427
  asection *input_section = link_order->u.indirect.section;
4428
  bfd *input_bfd = input_section->owner;
4429
  asection **sections = NULL;
4430
  Elf_Internal_Rela *internal_relocs = NULL;
4431
  Elf_Internal_Sym *isymbuf = NULL;
4432
 
4433
  /* We only need to handle the case of relaxing, or of having a
4434
     particular set of section contents, specially.  */
4435
  if (relocatable
4436
      || elf_section_data (input_section)->this_hdr.contents == NULL)
4437
    return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
4438
                                                       link_order, data,
4439
                                                       relocatable,
4440
                                                       symbols);
4441
 
4442
  symtab_hdr = &elf_symtab_hdr (input_bfd);
4443
 
4444
  memcpy (data, elf_section_data (input_section)->this_hdr.contents,
4445
          (size_t) input_section->size);
4446
 
4447
  if ((input_section->flags & SEC_RELOC) != 0
4448
      && input_section->reloc_count > 0)
4449
    {
4450
      asection **secpp;
4451
      Elf_Internal_Sym *isym, *isymend;
4452
      bfd_size_type amt;
4453
 
4454
      internal_relocs = (_bfd_elf_link_read_relocs
4455
                         (input_bfd, input_section, NULL,
4456
                          (Elf_Internal_Rela *) NULL, FALSE));
4457
      if (internal_relocs == NULL)
4458
        goto error_return;
4459
 
4460
      if (symtab_hdr->sh_info != 0)
4461
        {
4462
          isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4463
          if (isymbuf == NULL)
4464
            isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4465
                                            symtab_hdr->sh_info, 0,
4466
                                            NULL, NULL, NULL);
4467
          if (isymbuf == NULL)
4468
            goto error_return;
4469
        }
4470
 
4471
      amt = symtab_hdr->sh_info;
4472
      amt *= sizeof (asection *);
4473
      sections = (asection **) bfd_malloc (amt);
4474
      if (sections == NULL && amt != 0)
4475
        goto error_return;
4476
 
4477
      isymend = isymbuf + symtab_hdr->sh_info;
4478
      for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
4479
        {
4480
          asection *isec;
4481
 
4482
          if (isym->st_shndx == SHN_UNDEF)
4483
            isec = bfd_und_section_ptr;
4484
          else if (isym->st_shndx == SHN_ABS)
4485
            isec = bfd_abs_section_ptr;
4486
          else if (isym->st_shndx == SHN_COMMON)
4487
            isec = bfd_com_section_ptr;
4488
          else
4489
            isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
4490
 
4491
          *secpp = isec;
4492
        }
4493
 
4494
      if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
4495
                                     input_section, data, internal_relocs,
4496
                                     isymbuf, sections))
4497
        goto error_return;
4498
 
4499
      if (sections != NULL)
4500
        free (sections);
4501
      if (isymbuf != NULL
4502
          && symtab_hdr->contents != (unsigned char *) isymbuf)
4503
        free (isymbuf);
4504
      if (elf_section_data (input_section)->relocs != internal_relocs)
4505
        free (internal_relocs);
4506
    }
4507
 
4508
  return data;
4509
 
4510
 error_return:
4511
  if (sections != NULL)
4512
    free (sections);
4513
  if (isymbuf != NULL
4514
      && symtab_hdr->contents != (unsigned char *) isymbuf)
4515
    free (isymbuf);
4516
  if (internal_relocs != NULL
4517
      && elf_section_data (input_section)->relocs != internal_relocs)
4518
    free (internal_relocs);
4519
  return NULL;
4520
}
4521
 
4522
/* Return the base VMA address which should be subtracted from real addresses
4523
   when resolving @dtpoff relocation.
4524
   This is PT_TLS segment p_vaddr.  */
4525
 
4526
static bfd_vma
4527
dtpoff_base (struct bfd_link_info *info)
4528
{
4529
  /* If tls_sec is NULL, we should have signalled an error already.  */
4530
  if (elf_hash_table (info)->tls_sec == NULL)
4531
    return 0;
4532
  return elf_hash_table (info)->tls_sec->vma;
4533
}
4534
 
4535
/* Return the relocation value for R_SH_TLS_TPOFF32..  */
4536
 
4537
static bfd_vma
4538
tpoff (struct bfd_link_info *info, bfd_vma address)
4539
{
4540
  /* If tls_sec is NULL, we should have signalled an error already.  */
4541
  if (elf_hash_table (info)->tls_sec == NULL)
4542
    return 0;
4543
  /* SH TLS ABI is variant I and static TLS block start just after tcbhead
4544
     structure which has 2 pointer fields.  */
4545
  return (address - elf_hash_table (info)->tls_sec->vma
4546
          + align_power ((bfd_vma) 8,
4547
                         elf_hash_table (info)->tls_sec->alignment_power));
4548
}
4549
 
4550
static asection *
4551
sh_elf_gc_mark_hook (asection *sec,
4552
                     struct bfd_link_info *info,
4553
                     Elf_Internal_Rela *rel,
4554
                     struct elf_link_hash_entry *h,
4555
                     Elf_Internal_Sym *sym)
4556
{
4557
  if (h != NULL)
4558
    switch (ELF32_R_TYPE (rel->r_info))
4559
      {
4560
      case R_SH_GNU_VTINHERIT:
4561
      case R_SH_GNU_VTENTRY:
4562
        return NULL;
4563
      }
4564
 
4565
  return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4566
}
4567
 
4568
/* Update the got entry reference counts for the section being removed.  */
4569
 
4570
static bfd_boolean
4571
sh_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4572
                      asection *sec, const Elf_Internal_Rela *relocs)
4573
{
4574
  Elf_Internal_Shdr *symtab_hdr;
4575
  struct elf_link_hash_entry **sym_hashes;
4576
  bfd_signed_vma *local_got_refcounts;
4577
  const Elf_Internal_Rela *rel, *relend;
4578
 
4579
  if (info->relocatable)
4580
    return TRUE;
4581
 
4582
  elf_section_data (sec)->local_dynrel = NULL;
4583
 
4584
  symtab_hdr = &elf_symtab_hdr (abfd);
4585
  sym_hashes = elf_sym_hashes (abfd);
4586
  local_got_refcounts = elf_local_got_refcounts (abfd);
4587
 
4588
  relend = relocs + sec->reloc_count;
4589
  for (rel = relocs; rel < relend; rel++)
4590
    {
4591
      unsigned long r_symndx;
4592
      unsigned int r_type;
4593
      struct elf_link_hash_entry *h = NULL;
4594
#ifdef INCLUDE_SHMEDIA
4595
      int seen_stt_datalabel = 0;
4596
#endif
4597
 
4598
      r_symndx = ELF32_R_SYM (rel->r_info);
4599
      if (r_symndx >= symtab_hdr->sh_info)
4600
        {
4601
          struct elf_sh_link_hash_entry *eh;
4602
          struct elf_sh_dyn_relocs **pp;
4603
          struct elf_sh_dyn_relocs *p;
4604
 
4605
          h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4606
          while (h->root.type == bfd_link_hash_indirect
4607
                 || h->root.type == bfd_link_hash_warning)
4608
            {
4609
#ifdef INCLUDE_SHMEDIA
4610
              seen_stt_datalabel |= h->type == STT_DATALABEL;
4611
#endif
4612
              h = (struct elf_link_hash_entry *) h->root.u.i.link;
4613
            }
4614
          eh = (struct elf_sh_link_hash_entry *) h;
4615
          for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4616
            if (p->sec == sec)
4617
              {
4618
                /* Everything must go for SEC.  */
4619
                *pp = p->next;
4620
                break;
4621
              }
4622
        }
4623
 
4624
      r_type = ELF32_R_TYPE (rel->r_info);
4625
      switch (sh_elf_optimized_tls_reloc (info, r_type, h != NULL))
4626
        {
4627
        case R_SH_TLS_LD_32:
4628
          if (sh_elf_hash_table (info)->tls_ldm_got.refcount > 0)
4629
            sh_elf_hash_table (info)->tls_ldm_got.refcount -= 1;
4630
          break;
4631
 
4632
        case R_SH_GOT32:
4633
        case R_SH_GOTOFF:
4634
        case R_SH_GOTPC:
4635
#ifdef INCLUDE_SHMEDIA
4636
        case R_SH_GOT_LOW16:
4637
        case R_SH_GOT_MEDLOW16:
4638
        case R_SH_GOT_MEDHI16:
4639
        case R_SH_GOT_HI16:
4640
        case R_SH_GOT10BY4:
4641
        case R_SH_GOT10BY8:
4642
        case R_SH_GOTOFF_LOW16:
4643
        case R_SH_GOTOFF_MEDLOW16:
4644
        case R_SH_GOTOFF_MEDHI16:
4645
        case R_SH_GOTOFF_HI16:
4646
        case R_SH_GOTPC_LOW16:
4647
        case R_SH_GOTPC_MEDLOW16:
4648
        case R_SH_GOTPC_MEDHI16:
4649
        case R_SH_GOTPC_HI16:
4650
#endif
4651
        case R_SH_TLS_GD_32:
4652
        case R_SH_TLS_IE_32:
4653
          if (h != NULL)
4654
            {
4655
#ifdef INCLUDE_SHMEDIA
4656
              if (seen_stt_datalabel)
4657
                {
4658
                  struct elf_sh_link_hash_entry *eh;
4659
                  eh = (struct elf_sh_link_hash_entry *) h;
4660
                  if (eh->datalabel_got.refcount > 0)
4661
                    eh->datalabel_got.refcount -= 1;
4662
                }
4663
              else
4664
#endif
4665
                if (h->got.refcount > 0)
4666
                  h->got.refcount -= 1;
4667
            }
4668
          else if (local_got_refcounts != NULL)
4669
            {
4670
#ifdef INCLUDE_SHMEDIA
4671
              if (rel->r_addend & 1)
4672
                {
4673
                  if (local_got_refcounts[symtab_hdr->sh_info + r_symndx] > 0)
4674
                    local_got_refcounts[symtab_hdr->sh_info + r_symndx] -= 1;
4675
                }
4676
              else
4677
#endif
4678
                if (local_got_refcounts[r_symndx] > 0)
4679
                  local_got_refcounts[r_symndx] -= 1;
4680
            }
4681
          break;
4682
 
4683
        case R_SH_DIR32:
4684
        case R_SH_REL32:
4685
          if (info->shared)
4686
            break;
4687
          /* Fall thru */
4688
 
4689
        case R_SH_PLT32:
4690
#ifdef INCLUDE_SHMEDIA
4691
        case R_SH_PLT_LOW16:
4692
        case R_SH_PLT_MEDLOW16:
4693
        case R_SH_PLT_MEDHI16:
4694
        case R_SH_PLT_HI16:
4695
#endif
4696
          if (h != NULL)
4697
            {
4698
              if (h->plt.refcount > 0)
4699
                h->plt.refcount -= 1;
4700
            }
4701
          break;
4702
 
4703
        case R_SH_GOTPLT32:
4704
#ifdef INCLUDE_SHMEDIA
4705
        case R_SH_GOTPLT_LOW16:
4706
        case R_SH_GOTPLT_MEDLOW16:
4707
        case R_SH_GOTPLT_MEDHI16:
4708
        case R_SH_GOTPLT_HI16:
4709
        case R_SH_GOTPLT10BY4:
4710
        case R_SH_GOTPLT10BY8:
4711
#endif
4712
          if (h != NULL)
4713
            {
4714
              struct elf_sh_link_hash_entry *eh;
4715
              eh = (struct elf_sh_link_hash_entry *) h;
4716
              if (eh->gotplt_refcount > 0)
4717
                {
4718
                  eh->gotplt_refcount -= 1;
4719
                  if (h->plt.refcount > 0)
4720
                    h->plt.refcount -= 1;
4721
                }
4722
#ifdef INCLUDE_SHMEDIA
4723
              else if (seen_stt_datalabel)
4724
                {
4725
                  if (eh->datalabel_got.refcount > 0)
4726
                    eh->datalabel_got.refcount -= 1;
4727
                }
4728
#endif
4729
              else if (h->got.refcount > 0)
4730
                h->got.refcount -= 1;
4731
            }
4732
          else if (local_got_refcounts != NULL)
4733
            {
4734
#ifdef INCLUDE_SHMEDIA
4735
              if (rel->r_addend & 1)
4736
                {
4737
                  if (local_got_refcounts[symtab_hdr->sh_info + r_symndx] > 0)
4738
                    local_got_refcounts[symtab_hdr->sh_info + r_symndx] -= 1;
4739
                }
4740
              else
4741
#endif
4742
                if (local_got_refcounts[r_symndx] > 0)
4743
                  local_got_refcounts[r_symndx] -= 1;
4744
            }
4745
          break;
4746
 
4747
        default:
4748
          break;
4749
        }
4750
    }
4751
 
4752
  return TRUE;
4753
}
4754
 
4755
/* Copy the extra info we tack onto an elf_link_hash_entry.  */
4756
 
4757
static void
4758
sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
4759
                             struct elf_link_hash_entry *dir,
4760
                             struct elf_link_hash_entry *ind)
4761
{
4762
  struct elf_sh_link_hash_entry *edir, *eind;
4763
 
4764
  edir = (struct elf_sh_link_hash_entry *) dir;
4765
  eind = (struct elf_sh_link_hash_entry *) ind;
4766
 
4767
  if (eind->dyn_relocs != NULL)
4768
    {
4769
      if (edir->dyn_relocs != NULL)
4770
        {
4771
          struct elf_sh_dyn_relocs **pp;
4772
          struct elf_sh_dyn_relocs *p;
4773
 
4774
          /* Add reloc counts against the indirect sym to the direct sym
4775
             list.  Merge any entries against the same section.  */
4776
          for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4777
            {
4778
              struct elf_sh_dyn_relocs *q;
4779
 
4780
              for (q = edir->dyn_relocs; q != NULL; q = q->next)
4781
                if (q->sec == p->sec)
4782
                  {
4783
                    q->pc_count += p->pc_count;
4784
                    q->count += p->count;
4785
                    *pp = p->next;
4786
                    break;
4787
                  }
4788
              if (q == NULL)
4789
                pp = &p->next;
4790
            }
4791
          *pp = edir->dyn_relocs;
4792
        }
4793
 
4794
      edir->dyn_relocs = eind->dyn_relocs;
4795
      eind->dyn_relocs = NULL;
4796
    }
4797
  edir->gotplt_refcount = eind->gotplt_refcount;
4798
  eind->gotplt_refcount = 0;
4799
#ifdef INCLUDE_SHMEDIA
4800
  edir->datalabel_got.refcount += eind->datalabel_got.refcount;
4801
  eind->datalabel_got.refcount = 0;
4802
#endif
4803
 
4804
  if (ind->root.type == bfd_link_hash_indirect
4805
      && dir->got.refcount <= 0)
4806
    {
4807
      edir->tls_type = eind->tls_type;
4808
      eind->tls_type = GOT_UNKNOWN;
4809
    }
4810
 
4811
  if (ind->root.type != bfd_link_hash_indirect
4812
      && dir->dynamic_adjusted)
4813
    {
4814
      /* If called to transfer flags for a weakdef during processing
4815
         of elf_adjust_dynamic_symbol, don't copy non_got_ref.
4816
         We clear it ourselves for ELIMINATE_COPY_RELOCS.  */
4817
      dir->ref_dynamic |= ind->ref_dynamic;
4818
      dir->ref_regular |= ind->ref_regular;
4819
      dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
4820
      dir->needs_plt |= ind->needs_plt;
4821
    }
4822
  else
4823
    _bfd_elf_link_hash_copy_indirect (info, dir, ind);
4824
}
4825
 
4826
static int
4827
sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
4828
                            int is_local)
4829
{
4830
  if (info->shared)
4831
    return r_type;
4832
 
4833
  switch (r_type)
4834
    {
4835
    case R_SH_TLS_GD_32:
4836
    case R_SH_TLS_IE_32:
4837
      if (is_local)
4838
        return R_SH_TLS_LE_32;
4839
      return R_SH_TLS_IE_32;
4840
    case R_SH_TLS_LD_32:
4841
      return R_SH_TLS_LE_32;
4842
    }
4843
 
4844
  return r_type;
4845
}
4846
 
4847
/* Look through the relocs for a section during the first phase.
4848
   Since we don't do .gots or .plts, we just need to consider the
4849
   virtual table relocs for gc.  */
4850
 
4851
static bfd_boolean
4852
sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
4853
                     const Elf_Internal_Rela *relocs)
4854
{
4855
  Elf_Internal_Shdr *symtab_hdr;
4856
  struct elf_link_hash_entry **sym_hashes;
4857
  struct elf_sh_link_hash_table *htab;
4858
  const Elf_Internal_Rela *rel;
4859
  const Elf_Internal_Rela *rel_end;
4860
  bfd_vma *local_got_offsets;
4861
  asection *sgot;
4862
  asection *srelgot;
4863
  asection *sreloc;
4864
  unsigned int r_type;
4865
  int tls_type, old_tls_type;
4866
 
4867
  sgot = NULL;
4868
  srelgot = NULL;
4869
  sreloc = NULL;
4870
 
4871
  if (info->relocatable)
4872
    return TRUE;
4873
 
4874
  BFD_ASSERT (is_sh_elf (abfd));
4875
 
4876
  symtab_hdr = &elf_symtab_hdr (abfd);
4877
  sym_hashes = elf_sym_hashes (abfd);
4878
 
4879
  htab = sh_elf_hash_table (info);
4880
  if (htab == NULL)
4881
    return FALSE;
4882
 
4883
  local_got_offsets = elf_local_got_offsets (abfd);
4884
 
4885
  rel_end = relocs + sec->reloc_count;
4886
  for (rel = relocs; rel < rel_end; rel++)
4887
    {
4888
      struct elf_link_hash_entry *h;
4889
      unsigned long r_symndx;
4890
#ifdef INCLUDE_SHMEDIA
4891
      int seen_stt_datalabel = 0;
4892
#endif
4893
 
4894
      r_symndx = ELF32_R_SYM (rel->r_info);
4895
      r_type = ELF32_R_TYPE (rel->r_info);
4896
 
4897
      if (r_symndx < symtab_hdr->sh_info)
4898
        h = NULL;
4899
      else
4900
        {
4901
          h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4902
          while (h->root.type == bfd_link_hash_indirect
4903
                 || h->root.type == bfd_link_hash_warning)
4904
            {
4905
#ifdef INCLUDE_SHMEDIA
4906
              seen_stt_datalabel |= h->type == STT_DATALABEL;
4907
#endif
4908
              h = (struct elf_link_hash_entry *) h->root.u.i.link;
4909
            }
4910
        }
4911
 
4912
      r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4913
      if (! info->shared
4914
          && r_type == R_SH_TLS_IE_32
4915
          && h != NULL
4916
          && h->root.type != bfd_link_hash_undefined
4917
          && h->root.type != bfd_link_hash_undefweak
4918
          && (h->dynindx == -1
4919
              || h->def_regular))
4920
        r_type = R_SH_TLS_LE_32;
4921
 
4922
      /* Some relocs require a global offset table.  */
4923
      if (htab->sgot == NULL)
4924
        {
4925
          switch (r_type)
4926
            {
4927
            case R_SH_GOTPLT32:
4928
            case R_SH_GOT32:
4929
            case R_SH_GOTOFF:
4930
            case R_SH_GOTPC:
4931
#ifdef INCLUDE_SHMEDIA
4932
            case R_SH_GOTPLT_LOW16:
4933
            case R_SH_GOTPLT_MEDLOW16:
4934
            case R_SH_GOTPLT_MEDHI16:
4935
            case R_SH_GOTPLT_HI16:
4936
            case R_SH_GOTPLT10BY4:
4937
            case R_SH_GOTPLT10BY8:
4938
            case R_SH_GOT_LOW16:
4939
            case R_SH_GOT_MEDLOW16:
4940
            case R_SH_GOT_MEDHI16:
4941
            case R_SH_GOT_HI16:
4942
            case R_SH_GOT10BY4:
4943
            case R_SH_GOT10BY8:
4944
            case R_SH_GOTOFF_LOW16:
4945
            case R_SH_GOTOFF_MEDLOW16:
4946
            case R_SH_GOTOFF_MEDHI16:
4947
            case R_SH_GOTOFF_HI16:
4948
            case R_SH_GOTPC_LOW16:
4949
            case R_SH_GOTPC_MEDLOW16:
4950
            case R_SH_GOTPC_MEDHI16:
4951
            case R_SH_GOTPC_HI16:
4952
#endif
4953
            case R_SH_TLS_GD_32:
4954
            case R_SH_TLS_LD_32:
4955
            case R_SH_TLS_IE_32:
4956
              if (htab->sgot == NULL)
4957
                {
4958
                  if (htab->root.dynobj == NULL)
4959
                    htab->root.dynobj = abfd;
4960
                  if (!create_got_section (htab->root.dynobj, info))
4961
                    return FALSE;
4962
                }
4963
              break;
4964
 
4965
            default:
4966
              break;
4967
            }
4968
        }
4969
 
4970
      switch (r_type)
4971
        {
4972
          /* This relocation describes the C++ object vtable hierarchy.
4973
             Reconstruct it for later use during GC.  */
4974
        case R_SH_GNU_VTINHERIT:
4975
          if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4976
            return FALSE;
4977
          break;
4978
 
4979
          /* This relocation describes which C++ vtable entries are actually
4980
             used.  Record for later use during GC.  */
4981
        case R_SH_GNU_VTENTRY:
4982
          BFD_ASSERT (h != NULL);
4983
          if (h != NULL
4984
              && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4985
            return FALSE;
4986
          break;
4987
 
4988
        case R_SH_TLS_IE_32:
4989
          if (info->shared)
4990
            info->flags |= DF_STATIC_TLS;
4991
 
4992
          /* FALLTHROUGH */
4993
        force_got:
4994
        case R_SH_TLS_GD_32:
4995
        case R_SH_GOT32:
4996
#ifdef INCLUDE_SHMEDIA
4997
        case R_SH_GOT_LOW16:
4998
        case R_SH_GOT_MEDLOW16:
4999
        case R_SH_GOT_MEDHI16:
5000
        case R_SH_GOT_HI16:
5001
        case R_SH_GOT10BY4:
5002
        case R_SH_GOT10BY8:
5003
#endif
5004
          switch (r_type)
5005
            {
5006
            default:
5007
              tls_type = GOT_NORMAL;
5008
              break;
5009
            case R_SH_TLS_GD_32:
5010
              tls_type = GOT_TLS_GD;
5011
              break;
5012
            case R_SH_TLS_IE_32:
5013
              tls_type = GOT_TLS_IE;
5014
              break;
5015
            }
5016
 
5017
          if (h != NULL)
5018
            {
5019
#ifdef INCLUDE_SHMEDIA
5020
              if (seen_stt_datalabel)
5021
                {
5022
                  struct elf_sh_link_hash_entry *eh
5023
                    = (struct elf_sh_link_hash_entry *) h;
5024
 
5025
                  eh->datalabel_got.refcount += 1;
5026
                }
5027
              else
5028
#endif
5029
                h->got.refcount += 1;
5030
              old_tls_type = sh_elf_hash_entry (h)->tls_type;
5031
            }
5032
          else
5033
            {
5034
              bfd_signed_vma *local_got_refcounts;
5035
 
5036
              /* This is a global offset table entry for a local
5037
                 symbol.  */
5038
              local_got_refcounts = elf_local_got_refcounts (abfd);
5039
              if (local_got_refcounts == NULL)
5040
                {
5041
                  bfd_size_type size;
5042
 
5043
                  size = symtab_hdr->sh_info;
5044
                  size *= sizeof (bfd_signed_vma);
5045
#ifdef INCLUDE_SHMEDIA
5046
                  /* Reserve space for both the datalabel and
5047
                     codelabel local GOT offsets.  */
5048
                  size *= 2;
5049
#endif
5050
                  size += symtab_hdr->sh_info;
5051
                  local_got_refcounts = ((bfd_signed_vma *)
5052
                                         bfd_zalloc (abfd, size));
5053
                  if (local_got_refcounts == NULL)
5054
                    return FALSE;
5055
                  elf_local_got_refcounts (abfd) = local_got_refcounts;
5056
#ifdef  INCLUDE_SHMEDIA
5057
                  /* Take care of both the datalabel and codelabel local
5058
                     GOT offsets.  */
5059
                  sh_elf_local_got_tls_type (abfd)
5060
                    = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
5061
#else
5062
                  sh_elf_local_got_tls_type (abfd)
5063
                    = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5064
#endif
5065
                }
5066
#ifdef INCLUDE_SHMEDIA
5067
              if (rel->r_addend & 1)
5068
                local_got_refcounts[symtab_hdr->sh_info + r_symndx] += 1;
5069
              else
5070
#endif
5071
                local_got_refcounts[r_symndx] += 1;
5072
              old_tls_type = sh_elf_local_got_tls_type (abfd) [r_symndx];
5073
            }
5074
 
5075
          /* If a TLS symbol is accessed using IE at least once,
5076
             there is no point to use dynamic model for it.  */
5077
          if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
5078
              && (old_tls_type != GOT_TLS_GD || tls_type != GOT_TLS_IE))
5079
            {
5080
              if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
5081
                tls_type = GOT_TLS_IE;
5082
              else
5083
                {
5084
                  (*_bfd_error_handler)
5085
                    (_("%B: `%s' accessed both as normal and thread local symbol"),
5086
                     abfd, h->root.root.string);
5087
                  return FALSE;
5088
                }
5089
            }
5090
 
5091
          if (old_tls_type != tls_type)
5092
            {
5093
              if (h != NULL)
5094
                sh_elf_hash_entry (h)->tls_type = tls_type;
5095
              else
5096
                sh_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
5097
            }
5098
 
5099
          break;
5100
 
5101
        case R_SH_TLS_LD_32:
5102
          sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5103
          break;
5104
 
5105
        case R_SH_GOTPLT32:
5106
#ifdef INCLUDE_SHMEDIA
5107
        case R_SH_GOTPLT_LOW16:
5108
        case R_SH_GOTPLT_MEDLOW16:
5109
        case R_SH_GOTPLT_MEDHI16:
5110
        case R_SH_GOTPLT_HI16:
5111
        case R_SH_GOTPLT10BY4:
5112
        case R_SH_GOTPLT10BY8:
5113
#endif
5114
          /* If this is a local symbol, we resolve it directly without
5115
             creating a procedure linkage table entry.  */
5116
 
5117
          if (h == NULL
5118
              || h->forced_local
5119
              || ! info->shared
5120
              || info->symbolic
5121
              || h->dynindx == -1)
5122
            goto force_got;
5123
 
5124
          h->needs_plt = 1;
5125
          h->plt.refcount += 1;
5126
          ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5127
 
5128
          break;
5129
 
5130
        case R_SH_PLT32:
5131
#ifdef INCLUDE_SHMEDIA
5132
        case R_SH_PLT_LOW16:
5133
        case R_SH_PLT_MEDLOW16:
5134
        case R_SH_PLT_MEDHI16:
5135
        case R_SH_PLT_HI16:
5136
#endif
5137
          /* This symbol requires a procedure linkage table entry.  We
5138
             actually build the entry in adjust_dynamic_symbol,
5139
             because this might be a case of linking PIC code which is
5140
             never referenced by a dynamic object, in which case we
5141
             don't need to generate a procedure linkage table entry
5142
             after all.  */
5143
 
5144
          /* If this is a local symbol, we resolve it directly without
5145
             creating a procedure linkage table entry.  */
5146
          if (h == NULL)
5147
            continue;
5148
 
5149
          if (h->forced_local)
5150
            break;
5151
 
5152
          h->needs_plt = 1;
5153
          h->plt.refcount += 1;
5154
          break;
5155
 
5156
        case R_SH_DIR32:
5157
        case R_SH_REL32:
5158
#ifdef INCLUDE_SHMEDIA
5159
        case R_SH_IMM_LOW16_PCREL:
5160
        case R_SH_IMM_MEDLOW16_PCREL:
5161
        case R_SH_IMM_MEDHI16_PCREL:
5162
        case R_SH_IMM_HI16_PCREL:
5163
#endif
5164
          if (h != NULL && ! info->shared)
5165
            {
5166
              h->non_got_ref = 1;
5167
              h->plt.refcount += 1;
5168
            }
5169
 
5170
          /* If we are creating a shared library, and this is a reloc
5171
             against a global symbol, or a non PC relative reloc
5172
             against a local symbol, then we need to copy the reloc
5173
             into the shared library.  However, if we are linking with
5174
             -Bsymbolic, we do not need to copy a reloc against a
5175
             global symbol which is defined in an object we are
5176
             including in the link (i.e., DEF_REGULAR is set).  At
5177
             this point we have not seen all the input files, so it is
5178
             possible that DEF_REGULAR is not set now but will be set
5179
             later (it is never cleared).  We account for that
5180
             possibility below by storing information in the
5181
             dyn_relocs field of the hash table entry. A similar
5182
             situation occurs when creating shared libraries and symbol
5183
             visibility changes render the symbol local.
5184
 
5185
             If on the other hand, we are creating an executable, we
5186
             may need to keep relocations for symbols satisfied by a
5187
             dynamic library if we manage to avoid copy relocs for the
5188
             symbol.  */
5189
          if ((info->shared
5190
               && (sec->flags & SEC_ALLOC) != 0
5191
               && (r_type != R_SH_REL32
5192
                   || (h != NULL
5193
                       && (! info->symbolic
5194
                           || h->root.type == bfd_link_hash_defweak
5195
                           || !h->def_regular))))
5196
              || (! info->shared
5197
                  && (sec->flags & SEC_ALLOC) != 0
5198
                  && h != NULL
5199
                  && (h->root.type == bfd_link_hash_defweak
5200
                      || !h->def_regular)))
5201
            {
5202
              struct elf_sh_dyn_relocs *p;
5203
              struct elf_sh_dyn_relocs **head;
5204
 
5205
              if (htab->root.dynobj == NULL)
5206
                htab->root.dynobj = abfd;
5207
 
5208
              /* When creating a shared object, we must copy these
5209
                 reloc types into the output file.  We create a reloc
5210
                 section in dynobj and make room for this reloc.  */
5211
              if (sreloc == NULL)
5212
                {
5213
                  sreloc = _bfd_elf_make_dynamic_reloc_section
5214
                    (sec, htab->root.dynobj, 2, abfd, /*rela?*/ TRUE);
5215
 
5216
                  if (sreloc == NULL)
5217
                    return FALSE;
5218
                }
5219
 
5220
              /* If this is a global symbol, we count the number of
5221
                 relocations we need for this symbol.  */
5222
              if (h != NULL)
5223
                head = &((struct elf_sh_link_hash_entry *) h)->dyn_relocs;
5224
              else
5225
                {
5226
                  /* Track dynamic relocs needed for local syms too.  */
5227
                  asection *s;
5228
                  void *vpp;
5229
                  Elf_Internal_Sym *isym;
5230
 
5231
                  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5232
                                                abfd, r_symndx);
5233
                  if (isym == NULL)
5234
                    return FALSE;
5235
 
5236
                  s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5237
                  if (s == NULL)
5238
                    s = sec;
5239
 
5240
                  vpp = &elf_section_data (s)->local_dynrel;
5241
                  head = (struct elf_sh_dyn_relocs **) vpp;
5242
                }
5243
 
5244
              p = *head;
5245
              if (p == NULL || p->sec != sec)
5246
                {
5247
                  bfd_size_type amt = sizeof (*p);
5248
                  p = bfd_alloc (htab->root.dynobj, amt);
5249
                  if (p == NULL)
5250
                    return FALSE;
5251
                  p->next = *head;
5252
                  *head = p;
5253
                  p->sec = sec;
5254
                  p->count = 0;
5255
                  p->pc_count = 0;
5256
                }
5257
 
5258
              p->count += 1;
5259
              if (r_type == R_SH_REL32
5260
#ifdef INCLUDE_SHMEDIA
5261
                  || r_type == R_SH_IMM_LOW16_PCREL
5262
                  || r_type == R_SH_IMM_MEDLOW16_PCREL
5263
                  || r_type == R_SH_IMM_MEDHI16_PCREL
5264
                  || r_type == R_SH_IMM_HI16_PCREL
5265
#endif
5266
                  )
5267
                p->pc_count += 1;
5268
            }
5269
 
5270
          break;
5271
 
5272
        case R_SH_TLS_LE_32:
5273
          if (info->shared)
5274
            {
5275
              (*_bfd_error_handler)
5276
                (_("%B: TLS local exec code cannot be linked into shared objects"),
5277
                 abfd);
5278
              return FALSE;
5279
            }
5280
 
5281
          break;
5282
 
5283
        case R_SH_TLS_LDO_32:
5284
          /* Nothing to do.  */
5285
          break;
5286
 
5287
        default:
5288
          break;
5289
        }
5290
    }
5291
 
5292
  return TRUE;
5293
}
5294
 
5295
#ifndef sh_elf_set_mach_from_flags
5296
static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5297
 
5298
static bfd_boolean
5299
sh_elf_set_mach_from_flags (bfd *abfd)
5300
{
5301
  flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5302
 
5303
  if (flags >= sizeof(sh_ef_bfd_table))
5304
    return FALSE;
5305
 
5306
  if (sh_ef_bfd_table[flags] == 0)
5307
    return FALSE;
5308
 
5309
  bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5310
 
5311
  return TRUE;
5312
}
5313
 
5314
 
5315
/* Reverse table lookup for sh_ef_bfd_table[].
5316
   Given a bfd MACH value from archures.c
5317
   return the equivalent ELF flags from the table.
5318
   Return -1 if no match is found.  */
5319
 
5320
int
5321
sh_elf_get_flags_from_mach (unsigned long mach)
5322
{
5323
  int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5324
 
5325
  for (; i>0; i--)
5326
    if (sh_ef_bfd_table[i] == mach)
5327
      return i;
5328
 
5329
  /* shouldn't get here */
5330
  BFD_FAIL();
5331
 
5332
  return -1;
5333
}
5334
#endif /* not sh_elf_set_mach_from_flags */
5335
 
5336
#ifndef sh_elf_set_private_flags
5337
/* Function to keep SH specific file flags.  */
5338
 
5339
static bfd_boolean
5340
sh_elf_set_private_flags (bfd *abfd, flagword flags)
5341
{
5342
  BFD_ASSERT (! elf_flags_init (abfd)
5343
              || elf_elfheader (abfd)->e_flags == flags);
5344
 
5345
  elf_elfheader (abfd)->e_flags = flags;
5346
  elf_flags_init (abfd) = TRUE;
5347
  return sh_elf_set_mach_from_flags (abfd);
5348
}
5349
#endif /* not sh_elf_set_private_flags */
5350
 
5351
#ifndef sh_elf_copy_private_data
5352
/* Copy backend specific data from one object module to another */
5353
 
5354
static bfd_boolean
5355
sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5356
{
5357
  /* Copy object attributes.  */
5358
  _bfd_elf_copy_obj_attributes (ibfd, obfd);
5359
 
5360
  if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5361
    return TRUE;
5362
 
5363
  return sh_elf_set_private_flags (obfd, elf_elfheader (ibfd)->e_flags);
5364
}
5365
#endif /* not sh_elf_copy_private_data */
5366
 
5367
#ifndef sh_elf_merge_private_data
5368
 
5369
/* This function returns the ELF architecture number that
5370
   corresponds to the given arch_sh* flags.  */
5371
 
5372
int
5373
sh_find_elf_flags (unsigned int arch_set)
5374
{
5375
  extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5376
  unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5377
 
5378
  return sh_elf_get_flags_from_mach (bfd_mach);
5379
}
5380
 
5381
/* This routine initialises the elf flags when required and
5382
   calls sh_merge_bfd_arch() to check dsp/fpu compatibility.  */
5383
 
5384
static bfd_boolean
5385
sh_elf_merge_private_data (bfd *ibfd, bfd *obfd)
5386
{
5387
  extern bfd_boolean sh_merge_bfd_arch (bfd *, bfd *);
5388
 
5389
  if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5390
    return TRUE;
5391
 
5392
  if (! elf_flags_init (obfd))
5393
    {
5394
      /* This happens when ld starts out with a 'blank' output file.  */
5395
      elf_flags_init (obfd) = TRUE;
5396
      elf_elfheader (obfd)->e_flags = EF_SH1;
5397
      sh_elf_set_mach_from_flags (obfd);
5398
    }
5399
 
5400
  if (! sh_merge_bfd_arch (ibfd, obfd))
5401
    {
5402
      _bfd_error_handler ("%B: uses instructions which are incompatible "
5403
                          "with instructions used in previous modules",
5404
                          ibfd);
5405
      bfd_set_error (bfd_error_bad_value);
5406
      return FALSE;
5407
    }
5408
 
5409
  elf_elfheader (obfd)->e_flags =
5410
    sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
5411
 
5412
  return TRUE;
5413
}
5414
#endif /* not sh_elf_merge_private_data */
5415
 
5416
/* Override the generic function because we need to store sh_elf_obj_tdata
5417
   as the specific tdata.  We set also the machine architecture from flags
5418
   here.  */
5419
 
5420
static bfd_boolean
5421
sh_elf_object_p (bfd *abfd)
5422
{
5423
  return sh_elf_set_mach_from_flags (abfd);
5424
}
5425
 
5426
/* Finish up dynamic symbol handling.  We set the contents of various
5427
   dynamic sections here.  */
5428
 
5429
static bfd_boolean
5430
sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5431
                              struct elf_link_hash_entry *h,
5432
                              Elf_Internal_Sym *sym)
5433
{
5434
  struct elf_sh_link_hash_table *htab;
5435
 
5436
  htab = sh_elf_hash_table (info);
5437
  if (htab == NULL)
5438
    return FALSE;
5439
 
5440
  if (h->plt.offset != (bfd_vma) -1)
5441
    {
5442
      asection *splt;
5443
      asection *sgot;
5444
      asection *srel;
5445
 
5446
      bfd_vma plt_index;
5447
      bfd_vma got_offset;
5448
      Elf_Internal_Rela rel;
5449
      bfd_byte *loc;
5450
 
5451
      /* This symbol has an entry in the procedure linkage table.  Set
5452
         it up.  */
5453
 
5454
      BFD_ASSERT (h->dynindx != -1);
5455
 
5456
      splt = htab->splt;
5457
      sgot = htab->sgotplt;
5458
      srel = htab->srelplt;
5459
      BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
5460
 
5461
      /* Get the index in the procedure linkage table which
5462
         corresponds to this symbol.  This is the index of this symbol
5463
         in all the symbols for which we are making plt entries.  The
5464
         first entry in the procedure linkage table is reserved.  */
5465
      plt_index = get_plt_index (htab->plt_info, h->plt.offset);
5466
 
5467
      /* Get the offset into the .got table of the entry that
5468
         corresponds to this function.  Each .got entry is 4 bytes.
5469
         The first three are reserved.  */
5470
      got_offset = (plt_index + 3) * 4;
5471
 
5472
#ifdef GOT_BIAS
5473
      if (info->shared)
5474
        got_offset -= GOT_BIAS;
5475
#endif
5476
 
5477
      /* Fill in the entry in the procedure linkage table.  */
5478
      memcpy (splt->contents + h->plt.offset,
5479
              htab->plt_info->symbol_entry,
5480
              htab->plt_info->symbol_entry_size);
5481
 
5482
      if (info->shared)
5483
        install_plt_field (output_bfd, FALSE, got_offset,
5484
                           (splt->contents
5485
                            + h->plt.offset
5486
                            + htab->plt_info->symbol_fields.got_entry));
5487
      else
5488
        {
5489
          install_plt_field (output_bfd, FALSE,
5490
                             (sgot->output_section->vma
5491
                              + sgot->output_offset
5492
                              + got_offset),
5493
                             (splt->contents
5494
                              + h->plt.offset
5495
                              + htab->plt_info->symbol_fields.got_entry));
5496
          if (htab->vxworks_p)
5497
            {
5498
              unsigned int reachable_plts, plts_per_4k;
5499
              int distance;
5500
 
5501
              /* Divide the PLT into groups.  The first group contains
5502
                 REACHABLE_PLTS entries and the other groups contain
5503
                 PLTS_PER_4K entries.  Entries in the first group can
5504
                 branch directly to .plt; those in later groups branch
5505
                 to the last element of the previous group.  */
5506
              /* ??? It would be better to create multiple copies of
5507
                 the common resolver stub.  */
5508
              reachable_plts = ((4096
5509
                                 - htab->plt_info->plt0_entry_size
5510
                                 - (htab->plt_info->symbol_fields.plt + 4))
5511
                                / htab->plt_info->symbol_entry_size) + 1;
5512
              plts_per_4k = (4096 / htab->plt_info->symbol_entry_size);
5513
              if (plt_index < reachable_plts)
5514
                distance = -(h->plt.offset
5515
                             + htab->plt_info->symbol_fields.plt);
5516
              else
5517
                distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
5518
                             * htab->plt_info->symbol_entry_size);
5519
 
5520
              /* Install the 'bra' with this offset.  */
5521
              bfd_put_16 (output_bfd,
5522
                          0xa000 | (0x0fff & ((distance - 4) / 2)),
5523
                          (splt->contents
5524
                           + h->plt.offset
5525
                           + htab->plt_info->symbol_fields.plt));
5526
            }
5527
          else
5528
            install_plt_field (output_bfd, TRUE,
5529
                               splt->output_section->vma + splt->output_offset,
5530
                               (splt->contents
5531
                                + h->plt.offset
5532
                                + htab->plt_info->symbol_fields.plt));
5533
        }
5534
 
5535
#ifdef GOT_BIAS
5536
      if (info->shared)
5537
        got_offset += GOT_BIAS;
5538
#endif
5539
 
5540
      install_plt_field (output_bfd, FALSE,
5541
                         plt_index * sizeof (Elf32_External_Rela),
5542
                         (splt->contents
5543
                          + h->plt.offset
5544
                          + htab->plt_info->symbol_fields.reloc_offset));
5545
 
5546
      /* Fill in the entry in the global offset table.  */
5547
      bfd_put_32 (output_bfd,
5548
                  (splt->output_section->vma
5549
                   + splt->output_offset
5550
                   + h->plt.offset
5551
                   + htab->plt_info->symbol_resolve_offset),
5552
                  sgot->contents + got_offset);
5553
 
5554
      /* Fill in the entry in the .rela.plt section.  */
5555
      rel.r_offset = (sgot->output_section->vma
5556
                      + sgot->output_offset
5557
                      + got_offset);
5558
      rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
5559
      rel.r_addend = 0;
5560
#ifdef GOT_BIAS
5561
      rel.r_addend = GOT_BIAS;
5562
#endif
5563
      loc = srel->contents + plt_index * sizeof (Elf32_External_Rela);
5564
      bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5565
 
5566
      if (htab->vxworks_p && !info->shared)
5567
        {
5568
          /* Create the .rela.plt.unloaded relocations for this PLT entry.
5569
             Begin by pointing LOC to the first such relocation.  */
5570
          loc = (htab->srelplt2->contents
5571
                 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
5572
 
5573
          /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
5574
             for the PLT entry's pointer to the .got.plt entry.  */
5575
          rel.r_offset = (htab->splt->output_section->vma
5576
                          + htab->splt->output_offset
5577
                          + h->plt.offset
5578
                          + htab->plt_info->symbol_fields.got_entry);
5579
          rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
5580
          rel.r_addend = got_offset;
5581
          bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5582
          loc += sizeof (Elf32_External_Rela);
5583
 
5584
          /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
5585
             the .got.plt entry, which initially points to .plt.  */
5586
          rel.r_offset = (htab->sgotplt->output_section->vma
5587
                          + htab->sgotplt->output_offset
5588
                          + got_offset);
5589
          rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
5590
          rel.r_addend = 0;
5591
          bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5592
        }
5593
 
5594
      if (!h->def_regular)
5595
        {
5596
          /* Mark the symbol as undefined, rather than as defined in
5597
             the .plt section.  Leave the value alone.  */
5598
          sym->st_shndx = SHN_UNDEF;
5599
        }
5600
    }
5601
 
5602
  if (h->got.offset != (bfd_vma) -1
5603
      && sh_elf_hash_entry (h)->tls_type != GOT_TLS_GD
5604
      && sh_elf_hash_entry (h)->tls_type != GOT_TLS_IE)
5605
    {
5606
      asection *sgot;
5607
      asection *srel;
5608
      Elf_Internal_Rela rel;
5609
      bfd_byte *loc;
5610
 
5611
      /* This symbol has an entry in the global offset table.  Set it
5612
         up.  */
5613
 
5614
      sgot = htab->sgot;
5615
      srel = htab->srelgot;
5616
      BFD_ASSERT (sgot != NULL && srel != NULL);
5617
 
5618
      rel.r_offset = (sgot->output_section->vma
5619
                      + sgot->output_offset
5620
                      + (h->got.offset &~ (bfd_vma) 1));
5621
 
5622
      /* If this is a static link, or it is a -Bsymbolic link and the
5623
         symbol is defined locally or was forced to be local because
5624
         of a version file, we just want to emit a RELATIVE reloc.
5625
         The entry in the global offset table will already have been
5626
         initialized in the relocate_section function.  */
5627
      if (info->shared
5628
          && SYMBOL_REFERENCES_LOCAL (info, h))
5629
        {
5630
          rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
5631
          rel.r_addend = (h->root.u.def.value
5632
                          + h->root.u.def.section->output_section->vma
5633
                          + h->root.u.def.section->output_offset);
5634
        }
5635
      else
5636
        {
5637
          bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
5638
          rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
5639
          rel.r_addend = 0;
5640
        }
5641
 
5642
      loc = srel->contents;
5643
      loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
5644
      bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5645
    }
5646
 
5647
#ifdef INCLUDE_SHMEDIA
5648
  {
5649
    struct elf_sh_link_hash_entry *eh;
5650
 
5651
    eh = (struct elf_sh_link_hash_entry *) h;
5652
    if (eh->datalabel_got.offset != (bfd_vma) -1)
5653
      {
5654
        asection *sgot;
5655
        asection *srel;
5656
        Elf_Internal_Rela rel;
5657
        bfd_byte *loc;
5658
 
5659
        /* This symbol has a datalabel entry in the global offset table.
5660
           Set it up.  */
5661
 
5662
        sgot = htab->sgot;
5663
        srel = htab->srelgot;
5664
        BFD_ASSERT (sgot != NULL && srel != NULL);
5665
 
5666
        rel.r_offset = (sgot->output_section->vma
5667
                        + sgot->output_offset
5668
                        + (eh->datalabel_got.offset &~ (bfd_vma) 1));
5669
 
5670
        /* If this is a static link, or it is a -Bsymbolic link and the
5671
           symbol is defined locally or was forced to be local because
5672
           of a version file, we just want to emit a RELATIVE reloc.
5673
           The entry in the global offset table will already have been
5674
           initialized in the relocate_section function.  */
5675
        if (info->shared
5676
            && SYMBOL_REFERENCES_LOCAL (info, h))
5677
          {
5678
            rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
5679
            rel.r_addend = (h->root.u.def.value
5680
                            + h->root.u.def.section->output_section->vma
5681
                            + h->root.u.def.section->output_offset);
5682
          }
5683
        else
5684
          {
5685
            bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents
5686
                        + eh->datalabel_got.offset);
5687
            rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
5688
            rel.r_addend = 0;
5689
          }
5690
 
5691
        loc = srel->contents;
5692
        loc += srel->reloc_count++ * sizeof (Elf32_External_Rela);
5693
        bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5694
      }
5695
  }
5696
#endif
5697
 
5698
  if (h->needs_copy)
5699
    {
5700
      asection *s;
5701
      Elf_Internal_Rela rel;
5702
      bfd_byte *loc;
5703
 
5704
      /* This symbol needs a copy reloc.  Set it up.  */
5705
 
5706
      BFD_ASSERT (h->dynindx != -1
5707
                  && (h->root.type == bfd_link_hash_defined
5708
                      || h->root.type == bfd_link_hash_defweak));
5709
 
5710
      s = bfd_get_section_by_name (h->root.u.def.section->owner,
5711
                                   ".rela.bss");
5712
      BFD_ASSERT (s != NULL);
5713
 
5714
      rel.r_offset = (h->root.u.def.value
5715
                      + h->root.u.def.section->output_section->vma
5716
                      + h->root.u.def.section->output_offset);
5717
      rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
5718
      rel.r_addend = 0;
5719
      loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
5720
      bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5721
    }
5722
 
5723
  /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  On VxWorks,
5724
     _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
5725
     ".got" section.  */
5726
  if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5727
      || (!htab->vxworks_p && h == htab->root.hgot))
5728
    sym->st_shndx = SHN_ABS;
5729
 
5730
  return TRUE;
5731
}
5732
 
5733
/* Finish up the dynamic sections.  */
5734
 
5735
static bfd_boolean
5736
sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
5737
{
5738
  struct elf_sh_link_hash_table *htab;
5739
  asection *sgot;
5740
  asection *sdyn;
5741
 
5742
  htab = sh_elf_hash_table (info);
5743
  if (htab == NULL)
5744
    return FALSE;
5745
 
5746
  sgot = htab->sgotplt;
5747
  sdyn = bfd_get_section_by_name (htab->root.dynobj, ".dynamic");
5748
 
5749
  if (htab->root.dynamic_sections_created)
5750
    {
5751
      asection *splt;
5752
      Elf32_External_Dyn *dyncon, *dynconend;
5753
 
5754
      BFD_ASSERT (sgot != NULL && sdyn != NULL);
5755
 
5756
      dyncon = (Elf32_External_Dyn *) sdyn->contents;
5757
      dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5758
      for (; dyncon < dynconend; dyncon++)
5759
        {
5760
          Elf_Internal_Dyn dyn;
5761
          asection *s;
5762
#ifdef INCLUDE_SHMEDIA
5763
          const char *name;
5764
#endif
5765
 
5766
          bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
5767
 
5768
          switch (dyn.d_tag)
5769
            {
5770
            default:
5771
              if (htab->vxworks_p
5772
                  && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
5773
                bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5774
              break;
5775
 
5776
#ifdef INCLUDE_SHMEDIA
5777
            case DT_INIT:
5778
              name = info->init_function;
5779
              goto get_sym;
5780
 
5781
            case DT_FINI:
5782
              name = info->fini_function;
5783
            get_sym:
5784
              if (dyn.d_un.d_val != 0)
5785
                {
5786
                  struct elf_link_hash_entry *h;
5787
 
5788
                  h = elf_link_hash_lookup (&htab->root, name,
5789
                                            FALSE, FALSE, TRUE);
5790
                  if (h != NULL && (h->other & STO_SH5_ISA32))
5791
                    {
5792
                      dyn.d_un.d_val |= 1;
5793
                      bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5794
                    }
5795
                }
5796
              break;
5797
#endif
5798
 
5799
            case DT_PLTGOT:
5800
              s = htab->sgot->output_section;
5801
              goto get_vma;
5802
 
5803
            case DT_JMPREL:
5804
              s = htab->srelplt->output_section;
5805
            get_vma:
5806
              BFD_ASSERT (s != NULL);
5807
              dyn.d_un.d_ptr = s->vma;
5808
              bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5809
              break;
5810
 
5811
            case DT_PLTRELSZ:
5812
              s = htab->srelplt->output_section;
5813
              BFD_ASSERT (s != NULL);
5814
              dyn.d_un.d_val = s->size;
5815
              bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5816
              break;
5817
 
5818
            case DT_RELASZ:
5819
              /* My reading of the SVR4 ABI indicates that the
5820
                 procedure linkage table relocs (DT_JMPREL) should be
5821
                 included in the overall relocs (DT_RELA).  This is
5822
                 what Solaris does.  However, UnixWare can not handle
5823
                 that case.  Therefore, we override the DT_RELASZ entry
5824
                 here to make it not include the JMPREL relocs.  Since
5825
                 the linker script arranges for .rela.plt to follow all
5826
                 other relocation sections, we don't have to worry
5827
                 about changing the DT_RELA entry.  */
5828
              if (htab->srelplt != NULL)
5829
                {
5830
                  s = htab->srelplt->output_section;
5831
                  dyn.d_un.d_val -= s->size;
5832
                }
5833
              bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5834
              break;
5835
            }
5836
        }
5837
 
5838
      /* Fill in the first entry in the procedure linkage table.  */
5839
      splt = htab->splt;
5840
      if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
5841
        {
5842
          unsigned int i;
5843
 
5844
          memcpy (splt->contents,
5845
                  htab->plt_info->plt0_entry,
5846
                  htab->plt_info->plt0_entry_size);
5847
          for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
5848
            if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
5849
              install_plt_field (output_bfd, FALSE,
5850
                                 (sgot->output_section->vma
5851
                                  + sgot->output_offset
5852
                                  + (i * 4)),
5853
                                 (splt->contents
5854
                                  + htab->plt_info->plt0_got_fields[i]));
5855
 
5856
          if (htab->vxworks_p)
5857
            {
5858
              /* Finalize the .rela.plt.unloaded contents.  */
5859
              Elf_Internal_Rela rel;
5860
              bfd_byte *loc;
5861
 
5862
              /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
5863
                 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8.  */
5864
              loc = htab->srelplt2->contents;
5865
              rel.r_offset = (splt->output_section->vma
5866
                              + splt->output_offset
5867
                              + htab->plt_info->plt0_got_fields[2]);
5868
              rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
5869
              rel.r_addend = 8;
5870
              bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
5871
              loc += sizeof (Elf32_External_Rela);
5872
 
5873
              /* Fix up the remaining .rela.plt.unloaded relocations.
5874
                 They may have the wrong symbol index for _G_O_T_ or
5875
                 _P_L_T_ depending on the order in which symbols were
5876
                 output.  */
5877
              while (loc < htab->srelplt2->contents + htab->srelplt2->size)
5878
                {
5879
                  /* The PLT entry's pointer to the .got.plt slot.  */
5880
                  bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
5881
                  rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
5882
                                             R_SH_DIR32);
5883
                  bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5884
                  loc += sizeof (Elf32_External_Rela);
5885
 
5886
                  /* The .got.plt slot's pointer to .plt.  */
5887
                  bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
5888
                  rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
5889
                                             R_SH_DIR32);
5890
                  bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5891
                  loc += sizeof (Elf32_External_Rela);
5892
                }
5893
            }
5894
 
5895
          /* UnixWare sets the entsize of .plt to 4, although that doesn't
5896
             really seem like the right value.  */
5897
          elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
5898
        }
5899
    }
5900
 
5901
  /* Fill in the first three entries in the global offset table.  */
5902
  if (sgot && sgot->size > 0)
5903
    {
5904
      if (sdyn == NULL)
5905
        bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
5906
      else
5907
        bfd_put_32 (output_bfd,
5908
                    sdyn->output_section->vma + sdyn->output_offset,
5909
                    sgot->contents);
5910
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
5911
      bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
5912
 
5913
      elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
5914
    }
5915
 
5916
  return TRUE;
5917
}
5918
 
5919
static enum elf_reloc_type_class
5920
sh_elf_reloc_type_class (const Elf_Internal_Rela *rela)
5921
{
5922
  switch ((int) ELF32_R_TYPE (rela->r_info))
5923
    {
5924
    case R_SH_RELATIVE:
5925
      return reloc_class_relative;
5926
    case R_SH_JMP_SLOT:
5927
      return reloc_class_plt;
5928
    case R_SH_COPY:
5929
      return reloc_class_copy;
5930
    default:
5931
      return reloc_class_normal;
5932
    }
5933
}
5934
 
5935
#if !defined SH_TARGET_ALREADY_DEFINED
5936
/* Support for Linux core dump NOTE sections.  */
5937
 
5938
static bfd_boolean
5939
elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
5940
{
5941
  int offset;
5942
  unsigned int size;
5943
 
5944
  switch (note->descsz)
5945
    {
5946
      default:
5947
        return FALSE;
5948
 
5949
      case 168:         /* Linux/SH */
5950
        /* pr_cursig */
5951
        elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
5952
 
5953
        /* pr_pid */
5954
        elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
5955
 
5956
        /* pr_reg */
5957
        offset = 72;
5958
        size = 92;
5959
 
5960
        break;
5961
    }
5962
 
5963
  /* Make a ".reg/999" section.  */
5964
  return _bfd_elfcore_make_pseudosection (abfd, ".reg",
5965
                                          size, note->descpos + offset);
5966
}
5967
 
5968
static bfd_boolean
5969
elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
5970
{
5971
  switch (note->descsz)
5972
    {
5973
      default:
5974
        return FALSE;
5975
 
5976
      case 124:         /* Linux/SH elf_prpsinfo */
5977
        elf_tdata (abfd)->core_program
5978
         = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
5979
        elf_tdata (abfd)->core_command
5980
         = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
5981
    }
5982
 
5983
  /* Note that for some reason, a spurious space is tacked
5984
     onto the end of the args in some (at least one anyway)
5985
     implementations, so strip it off if it exists.  */
5986
 
5987
  {
5988
    char *command = elf_tdata (abfd)->core_command;
5989
    int n = strlen (command);
5990
 
5991
    if (0 < n && command[n - 1] == ' ')
5992
      command[n - 1] = '\0';
5993
  }
5994
 
5995
  return TRUE;
5996
}
5997
#endif /* not SH_TARGET_ALREADY_DEFINED */
5998
 
5999
 
6000
/* Return address for Ith PLT stub in section PLT, for relocation REL
6001
   or (bfd_vma) -1 if it should not be included.  */
6002
 
6003
static bfd_vma
6004
sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6005
                    const arelent *rel ATTRIBUTE_UNUSED)
6006
{
6007
  const struct elf_sh_plt_info *plt_info;
6008
 
6009
  plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6010
  return plt->vma + get_plt_offset (plt_info, i);
6011
}
6012
 
6013
#if !defined SH_TARGET_ALREADY_DEFINED
6014
#define TARGET_BIG_SYM          bfd_elf32_sh_vec
6015
#define TARGET_BIG_NAME         "elf32-sh"
6016
#define TARGET_LITTLE_SYM       bfd_elf32_shl_vec
6017
#define TARGET_LITTLE_NAME      "elf32-shl"
6018
#endif
6019
 
6020
#define ELF_ARCH                bfd_arch_sh
6021
#define ELF_MACHINE_CODE        EM_SH
6022
#ifdef __QNXTARGET__
6023
#define ELF_MAXPAGESIZE         0x1000
6024
#else
6025
#define ELF_MAXPAGESIZE         0x80
6026
#endif
6027
 
6028
#define elf_symbol_leading_char '_'
6029
 
6030
#define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6031
#define bfd_elf32_bfd_reloc_name_lookup \
6032
                                        sh_elf_reloc_name_lookup
6033
#define elf_info_to_howto               sh_elf_info_to_howto
6034
#define bfd_elf32_bfd_relax_section     sh_elf_relax_section
6035
#define elf_backend_relocate_section    sh_elf_relocate_section
6036
#define bfd_elf32_bfd_get_relocated_section_contents \
6037
                                        sh_elf_get_relocated_section_contents
6038
#define bfd_elf32_mkobject              sh_elf_mkobject
6039
#define elf_backend_object_p            sh_elf_object_p
6040
#define bfd_elf32_bfd_set_private_bfd_flags \
6041
                                        sh_elf_set_private_flags
6042
#define bfd_elf32_bfd_copy_private_bfd_data \
6043
                                        sh_elf_copy_private_data
6044
#define bfd_elf32_bfd_merge_private_bfd_data \
6045
                                        sh_elf_merge_private_data
6046
 
6047
#define elf_backend_gc_mark_hook        sh_elf_gc_mark_hook
6048
#define elf_backend_gc_sweep_hook       sh_elf_gc_sweep_hook
6049
#define elf_backend_check_relocs        sh_elf_check_relocs
6050
#define elf_backend_copy_indirect_symbol \
6051
                                        sh_elf_copy_indirect_symbol
6052
#define elf_backend_create_dynamic_sections \
6053
                                        sh_elf_create_dynamic_sections
6054
#define bfd_elf32_bfd_link_hash_table_create \
6055
                                        sh_elf_link_hash_table_create
6056
#define elf_backend_adjust_dynamic_symbol \
6057
                                        sh_elf_adjust_dynamic_symbol
6058
#define elf_backend_always_size_sections \
6059
                                        sh_elf_always_size_sections
6060
#define elf_backend_size_dynamic_sections \
6061
                                        sh_elf_size_dynamic_sections
6062
#define elf_backend_omit_section_dynsym \
6063
  ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
6064
#define elf_backend_finish_dynamic_symbol \
6065
                                        sh_elf_finish_dynamic_symbol
6066
#define elf_backend_finish_dynamic_sections \
6067
                                        sh_elf_finish_dynamic_sections
6068
#define elf_backend_reloc_type_class    sh_elf_reloc_type_class
6069
#define elf_backend_plt_sym_val         sh_elf_plt_sym_val
6070
 
6071
#define elf_backend_can_gc_sections     1
6072
#define elf_backend_can_refcount        1
6073
#define elf_backend_want_got_plt        1
6074
#define elf_backend_plt_readonly        1
6075
#define elf_backend_want_plt_sym        0
6076
#define elf_backend_got_header_size     12
6077
 
6078
#if !defined INCLUDE_SHMEDIA && !defined SH_TARGET_ALREADY_DEFINED
6079
 
6080
#include "elf32-target.h"
6081
 
6082
/* NetBSD support.  */
6083
#undef  TARGET_BIG_SYM
6084
#define TARGET_BIG_SYM                  bfd_elf32_shnbsd_vec
6085
#undef  TARGET_BIG_NAME
6086
#define TARGET_BIG_NAME                 "elf32-sh-nbsd"
6087
#undef  TARGET_LITTLE_SYM
6088
#define TARGET_LITTLE_SYM               bfd_elf32_shlnbsd_vec
6089
#undef  TARGET_LITTLE_NAME
6090
#define TARGET_LITTLE_NAME              "elf32-shl-nbsd"
6091
#undef  ELF_MAXPAGESIZE
6092
#define ELF_MAXPAGESIZE                 0x10000
6093
#undef  ELF_COMMONPAGESIZE
6094
#undef  elf_symbol_leading_char
6095
#define elf_symbol_leading_char         0
6096
#undef  elf32_bed
6097
#define elf32_bed                       elf32_sh_nbsd_bed
6098
 
6099
#include "elf32-target.h"
6100
 
6101
 
6102
/* Linux support.  */
6103
#undef  TARGET_BIG_SYM
6104
#define TARGET_BIG_SYM                  bfd_elf32_shblin_vec
6105
#undef  TARGET_BIG_NAME
6106
#define TARGET_BIG_NAME                 "elf32-shbig-linux"
6107
#undef  TARGET_LITTLE_SYM
6108
#define TARGET_LITTLE_SYM               bfd_elf32_shlin_vec
6109
#undef  TARGET_LITTLE_NAME
6110
#define TARGET_LITTLE_NAME              "elf32-sh-linux"
6111
#undef  ELF_COMMONPAGESIZE
6112
#define ELF_COMMONPAGESIZE              0x1000
6113
 
6114
#undef  elf_backend_grok_prstatus
6115
#define elf_backend_grok_prstatus       elf32_shlin_grok_prstatus
6116
#undef  elf_backend_grok_psinfo
6117
#define elf_backend_grok_psinfo         elf32_shlin_grok_psinfo
6118
#undef  elf32_bed
6119
#define elf32_bed                       elf32_sh_lin_bed
6120
 
6121
#include "elf32-target.h"
6122
 
6123
#undef  TARGET_BIG_SYM
6124
#define TARGET_BIG_SYM                  bfd_elf32_shvxworks_vec
6125
#undef  TARGET_BIG_NAME
6126
#define TARGET_BIG_NAME                 "elf32-sh-vxworks"
6127
#undef  TARGET_LITTLE_SYM
6128
#define TARGET_LITTLE_SYM               bfd_elf32_shlvxworks_vec
6129
#undef  TARGET_LITTLE_NAME
6130
#define TARGET_LITTLE_NAME              "elf32-shl-vxworks"
6131
#undef  elf32_bed
6132
#define elf32_bed                       elf32_sh_vxworks_bed
6133
 
6134
#undef  elf_backend_want_plt_sym
6135
#define elf_backend_want_plt_sym        1
6136
#undef  elf_symbol_leading_char
6137
#define elf_symbol_leading_char         '_'
6138
#define elf_backend_want_got_underscore 1
6139
#undef  elf_backend_grok_prstatus
6140
#undef  elf_backend_grok_psinfo
6141
#undef  elf_backend_add_symbol_hook
6142
#define elf_backend_add_symbol_hook     elf_vxworks_add_symbol_hook
6143
#undef  elf_backend_link_output_symbol_hook
6144
#define elf_backend_link_output_symbol_hook \
6145
                                        elf_vxworks_link_output_symbol_hook
6146
#undef  elf_backend_emit_relocs
6147
#define elf_backend_emit_relocs         elf_vxworks_emit_relocs
6148
#undef  elf_backend_final_write_processing
6149
#define elf_backend_final_write_processing \
6150
                                        elf_vxworks_final_write_processing
6151
#undef  ELF_MAXPAGESIZE
6152
#define ELF_MAXPAGESIZE                 0x1000
6153
#undef  ELF_COMMONPAGESIZE
6154
 
6155
#include "elf32-target.h"
6156
 
6157
#endif /* neither INCLUDE_SHMEDIA nor SH_TARGET_ALREADY_DEFINED */

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.