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1 /* Renesas / SuperH SH specific support for 32-bit ELF
2 Copyright (C) 1996-2020 Free Software Foundation, Inc.
3 Contributed by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "bfdlink.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27 #include "elf-vxworks.h"
28 #include "elf/sh.h"
29 #include "dwarf2.h"
30 #include "libiberty.h"
31 #include "../opcodes/sh-opc.h"
32
33 /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
34 #define OCTETS_PER_BYTE(ABFD, SEC) 1
35
36 static bfd_reloc_status_type sh_elf_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38 static bfd_reloc_status_type sh_elf_ignore_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_boolean sh_elf_relax_delete_bytes
41 (bfd *, asection *, bfd_vma, int);
42 static bfd_boolean sh_elf_align_loads
43 (bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_boolean *);
44 static bfd_boolean sh_elf_swap_insns
45 (bfd *, asection *, void *, bfd_byte *, bfd_vma);
46 static int sh_elf_optimized_tls_reloc
47 (struct bfd_link_info *, int, int);
48 static bfd_vma dtpoff_base
49 (struct bfd_link_info *);
50 static bfd_vma tpoff
51 (struct bfd_link_info *, bfd_vma);
52
53 /* The name of the dynamic interpreter. This is put in the .interp
54 section. */
55
56 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
57
58 /* FDPIC binaries have a default 128K stack. */
59 #define DEFAULT_STACK_SIZE 0x20000
60
61 #define MINUS_ONE ((bfd_vma) 0 - 1)
62
63 /* Decide whether a reference to a symbol can be resolved locally or
64 not. If the symbol is protected, we want the local address, but
65 its function descriptor must be assigned by the dynamic linker. */
66 #define SYMBOL_FUNCDESC_LOCAL(INFO, H) \
67 (SYMBOL_REFERENCES_LOCAL (INFO, H) \
68 || ! elf_hash_table (INFO)->dynamic_sections_created)
69 \f
70 #define SH_PARTIAL32 TRUE
71 #define SH_SRC_MASK32 0xffffffff
72 #define SH_ELF_RELOC sh_elf_reloc
73 static reloc_howto_type sh_elf_howto_table[] =
74 {
75 #include "elf32-sh-relocs.h"
76 };
77
78 #define SH_PARTIAL32 FALSE
79 #define SH_SRC_MASK32 0
80 #define SH_ELF_RELOC bfd_elf_generic_reloc
81 static reloc_howto_type sh_vxworks_howto_table[] =
82 {
83 #include "elf32-sh-relocs.h"
84 };
85 \f
86 /* Return true if OUTPUT_BFD is a VxWorks object. */
87
88 static bfd_boolean
89 vxworks_object_p (bfd *abfd ATTRIBUTE_UNUSED)
90 {
91 #if !defined SH_TARGET_ALREADY_DEFINED
92 extern const bfd_target sh_elf32_vxworks_le_vec;
93 extern const bfd_target sh_elf32_vxworks_vec;
94
95 return (abfd->xvec == &sh_elf32_vxworks_le_vec
96 || abfd->xvec == &sh_elf32_vxworks_vec);
97 #else
98 return FALSE;
99 #endif
100 }
101
102 /* Return true if OUTPUT_BFD is an FDPIC object. */
103
104 static bfd_boolean
105 fdpic_object_p (bfd *abfd ATTRIBUTE_UNUSED)
106 {
107 #if !defined SH_TARGET_ALREADY_DEFINED
108 extern const bfd_target sh_elf32_fdpic_le_vec;
109 extern const bfd_target sh_elf32_fdpic_be_vec;
110
111 return (abfd->xvec == &sh_elf32_fdpic_le_vec
112 || abfd->xvec == &sh_elf32_fdpic_be_vec);
113 #else
114 return FALSE;
115 #endif
116 }
117
118 /* Return the howto table for ABFD. */
119
120 static reloc_howto_type *
121 get_howto_table (bfd *abfd)
122 {
123 if (vxworks_object_p (abfd))
124 return sh_vxworks_howto_table;
125 return sh_elf_howto_table;
126 }
127
128 static bfd_reloc_status_type
129 sh_elf_reloc_loop (int r_type ATTRIBUTE_UNUSED, bfd *input_bfd,
130 asection *input_section, bfd_byte *contents,
131 bfd_vma addr, asection *symbol_section,
132 bfd_vma start, bfd_vma end)
133 {
134 static bfd_vma last_addr;
135 static asection *last_symbol_section;
136 bfd_byte *start_ptr, *ptr, *last_ptr;
137 int diff, cum_diff;
138 bfd_signed_vma x;
139 int insn;
140
141 /* Sanity check the address. */
142 if (addr > bfd_get_section_limit (input_bfd, input_section))
143 return bfd_reloc_outofrange;
144
145 /* We require the start and end relocations to be processed consecutively -
146 although we allow then to be processed forwards or backwards. */
147 if (! last_addr)
148 {
149 last_addr = addr;
150 last_symbol_section = symbol_section;
151 return bfd_reloc_ok;
152 }
153 if (last_addr != addr)
154 abort ();
155 last_addr = 0;
156
157 if (! symbol_section || last_symbol_section != symbol_section || end < start)
158 return bfd_reloc_outofrange;
159
160 /* Get the symbol_section contents. */
161 if (symbol_section != input_section)
162 {
163 if (elf_section_data (symbol_section)->this_hdr.contents != NULL)
164 contents = elf_section_data (symbol_section)->this_hdr.contents;
165 else
166 {
167 if (!bfd_malloc_and_get_section (input_bfd, symbol_section,
168 &contents))
169 {
170 free (contents);
171 return bfd_reloc_outofrange;
172 }
173 }
174 }
175 #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800)
176 start_ptr = contents + start;
177 for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;)
178 {
179 for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);)
180 ptr -= 2;
181 ptr += 2;
182 diff = (last_ptr - ptr) >> 1;
183 cum_diff += diff & 1;
184 cum_diff += diff;
185 }
186 /* Calculate the start / end values to load into rs / re minus four -
187 so that will cancel out the four we would otherwise have to add to
188 addr to get the value to subtract in order to get relative addressing. */
189 if (cum_diff >= 0)
190 {
191 start -= 4;
192 end = (ptr + cum_diff * 2) - contents;
193 }
194 else
195 {
196 bfd_vma start0 = start - 4;
197
198 while (start0 && IS_PPI (contents + start0))
199 start0 -= 2;
200 start0 = start - 2 - ((start - start0) & 2);
201 start = start0 - cum_diff - 2;
202 end = start0;
203 }
204
205 if (elf_section_data (symbol_section)->this_hdr.contents != contents)
206 free (contents);
207
208 insn = bfd_get_16 (input_bfd, contents + addr);
209
210 x = (insn & 0x200 ? end : start) - addr;
211 if (input_section != symbol_section)
212 x += ((symbol_section->output_section->vma + symbol_section->output_offset)
213 - (input_section->output_section->vma
214 + input_section->output_offset));
215 x >>= 1;
216 if (x < -128 || x > 127)
217 return bfd_reloc_overflow;
218
219 x = (insn & ~0xff) | (x & 0xff);
220 bfd_put_16 (input_bfd, (bfd_vma) x, contents + addr);
221
222 return bfd_reloc_ok;
223 }
224
225 /* This function is used for normal relocs. This used to be like the COFF
226 function, and is almost certainly incorrect for other ELF targets. */
227
228 static bfd_reloc_status_type
229 sh_elf_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in,
230 void *data, asection *input_section, bfd *output_bfd,
231 char **error_message ATTRIBUTE_UNUSED)
232 {
233 bfd_vma insn;
234 bfd_vma sym_value;
235 enum elf_sh_reloc_type r_type;
236 bfd_vma addr = reloc_entry->address;
237 bfd_size_type octets = addr * OCTETS_PER_BYTE (abfd, input_section);
238 bfd_byte *hit_data = (bfd_byte *) data + octets;
239
240 r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type;
241
242 if (output_bfd != NULL)
243 {
244 /* Partial linking--do nothing. */
245 reloc_entry->address += input_section->output_offset;
246 return bfd_reloc_ok;
247 }
248
249 /* Almost all relocs have to do with relaxing. If any work must be
250 done for them, it has been done in sh_relax_section. */
251 if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0)
252 return bfd_reloc_ok;
253
254 if (symbol_in != NULL
255 && bfd_is_und_section (symbol_in->section))
256 return bfd_reloc_undefined;
257
258 /* PR 17512: file: 9891ca98. */
259 if (octets + bfd_get_reloc_size (reloc_entry->howto)
260 > bfd_get_section_limit_octets (abfd, input_section))
261 return bfd_reloc_outofrange;
262
263 if (bfd_is_com_section (symbol_in->section))
264 sym_value = 0;
265 else
266 sym_value = (symbol_in->value +
267 symbol_in->section->output_section->vma +
268 symbol_in->section->output_offset);
269
270 switch (r_type)
271 {
272 case R_SH_DIR32:
273 insn = bfd_get_32 (abfd, hit_data);
274 insn += sym_value + reloc_entry->addend;
275 bfd_put_32 (abfd, insn, hit_data);
276 break;
277 case R_SH_IND12W:
278 insn = bfd_get_16 (abfd, hit_data);
279 sym_value += reloc_entry->addend;
280 sym_value -= (input_section->output_section->vma
281 + input_section->output_offset
282 + addr
283 + 4);
284 sym_value += (((insn & 0xfff) ^ 0x800) - 0x800) << 1;
285 insn = (insn & 0xf000) | ((sym_value >> 1) & 0xfff);
286 bfd_put_16 (abfd, insn, hit_data);
287 if (sym_value + 0x1000 >= 0x2000 || (sym_value & 1) != 0)
288 return bfd_reloc_overflow;
289 break;
290 default:
291 abort ();
292 break;
293 }
294
295 return bfd_reloc_ok;
296 }
297
298 /* This function is used for relocs which are only used for relaxing,
299 which the linker should otherwise ignore. */
300
301 static bfd_reloc_status_type
302 sh_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
303 asymbol *symbol ATTRIBUTE_UNUSED,
304 void *data ATTRIBUTE_UNUSED, asection *input_section,
305 bfd *output_bfd,
306 char **error_message ATTRIBUTE_UNUSED)
307 {
308 if (output_bfd != NULL)
309 reloc_entry->address += input_section->output_offset;
310 return bfd_reloc_ok;
311 }
312
313 /* This structure is used to map BFD reloc codes to SH ELF relocs. */
314
315 struct elf_reloc_map
316 {
317 bfd_reloc_code_real_type bfd_reloc_val;
318 unsigned char elf_reloc_val;
319 };
320
321 /* An array mapping BFD reloc codes to SH ELF relocs. */
322
323 static const struct elf_reloc_map sh_reloc_map[] =
324 {
325 { BFD_RELOC_NONE, R_SH_NONE },
326 { BFD_RELOC_32, R_SH_DIR32 },
327 { BFD_RELOC_16, R_SH_DIR16 },
328 { BFD_RELOC_8, R_SH_DIR8 },
329 { BFD_RELOC_CTOR, R_SH_DIR32 },
330 { BFD_RELOC_32_PCREL, R_SH_REL32 },
331 { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN },
332 { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W },
333 { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ },
334 { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL },
335 { BFD_RELOC_8_PCREL, R_SH_SWITCH8 },
336 { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 },
337 { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 },
338 { BFD_RELOC_SH_USES, R_SH_USES },
339 { BFD_RELOC_SH_COUNT, R_SH_COUNT },
340 { BFD_RELOC_SH_ALIGN, R_SH_ALIGN },
341 { BFD_RELOC_SH_CODE, R_SH_CODE },
342 { BFD_RELOC_SH_DATA, R_SH_DATA },
343 { BFD_RELOC_SH_LABEL, R_SH_LABEL },
344 { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT },
345 { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY },
346 { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START },
347 { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END },
348 { BFD_RELOC_SH_TLS_GD_32, R_SH_TLS_GD_32 },
349 { BFD_RELOC_SH_TLS_LD_32, R_SH_TLS_LD_32 },
350 { BFD_RELOC_SH_TLS_LDO_32, R_SH_TLS_LDO_32 },
351 { BFD_RELOC_SH_TLS_IE_32, R_SH_TLS_IE_32 },
352 { BFD_RELOC_SH_TLS_LE_32, R_SH_TLS_LE_32 },
353 { BFD_RELOC_SH_TLS_DTPMOD32, R_SH_TLS_DTPMOD32 },
354 { BFD_RELOC_SH_TLS_DTPOFF32, R_SH_TLS_DTPOFF32 },
355 { BFD_RELOC_SH_TLS_TPOFF32, R_SH_TLS_TPOFF32 },
356 { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 },
357 { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 },
358 { BFD_RELOC_SH_COPY, R_SH_COPY },
359 { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT },
360 { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT },
361 { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE },
362 { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF },
363 { BFD_RELOC_SH_GOTPC, R_SH_GOTPC },
364 { BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 },
365 { BFD_RELOC_SH_GOT20, R_SH_GOT20 },
366 { BFD_RELOC_SH_GOTOFF20, R_SH_GOTOFF20 },
367 { BFD_RELOC_SH_GOTFUNCDESC, R_SH_GOTFUNCDESC },
368 { BFD_RELOC_SH_GOTFUNCDESC20, R_SH_GOTFUNCDESC20 },
369 { BFD_RELOC_SH_GOTOFFFUNCDESC, R_SH_GOTOFFFUNCDESC },
370 { BFD_RELOC_SH_GOTOFFFUNCDESC20, R_SH_GOTOFFFUNCDESC20 },
371 { BFD_RELOC_SH_FUNCDESC, R_SH_FUNCDESC },
372 };
373
374 /* Given a BFD reloc code, return the howto structure for the
375 corresponding SH ELF reloc. */
376
377 static reloc_howto_type *
378 sh_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
379 {
380 unsigned int i;
381
382 for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++)
383 {
384 if (sh_reloc_map[i].bfd_reloc_val == code)
385 return get_howto_table (abfd) + (int) sh_reloc_map[i].elf_reloc_val;
386 }
387
388 return NULL;
389 }
390
391 static reloc_howto_type *
392 sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name)
393 {
394 unsigned int i;
395
396 if (vxworks_object_p (abfd))
397 {
398 for (i = 0;
399 i < (sizeof (sh_vxworks_howto_table)
400 / sizeof (sh_vxworks_howto_table[0]));
401 i++)
402 if (sh_vxworks_howto_table[i].name != NULL
403 && strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0)
404 return &sh_vxworks_howto_table[i];
405 }
406 else
407 {
408 for (i = 0;
409 i < (sizeof (sh_elf_howto_table)
410 / sizeof (sh_elf_howto_table[0]));
411 i++)
412 if (sh_elf_howto_table[i].name != NULL
413 && strcasecmp (sh_elf_howto_table[i].name, r_name) == 0)
414 return &sh_elf_howto_table[i];
415 }
416
417 return NULL;
418 }
419
420 /* Given an ELF reloc, fill in the howto field of a relent. */
421
422 static bfd_boolean
423 sh_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
424 {
425 unsigned int r;
426
427 r = ELF32_R_TYPE (dst->r_info);
428
429 if (r >= R_SH_max
430 || (r >= R_SH_FIRST_INVALID_RELOC && r <= R_SH_LAST_INVALID_RELOC)
431 || (r >= R_SH_FIRST_INVALID_RELOC_2 && r <= R_SH_LAST_INVALID_RELOC_2)
432 || (r >= R_SH_FIRST_INVALID_RELOC_3 && r <= R_SH_LAST_INVALID_RELOC_3)
433 || (r >= R_SH_FIRST_INVALID_RELOC_4 && r <= R_SH_LAST_INVALID_RELOC_4)
434 || (r >= R_SH_FIRST_INVALID_RELOC_5 && r <= R_SH_LAST_INVALID_RELOC_5)
435 || (r >= R_SH_FIRST_INVALID_RELOC_6 && r <= R_SH_LAST_INVALID_RELOC_6))
436 {
437 /* xgettext:c-format */
438 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
439 abfd, r);
440 bfd_set_error (bfd_error_bad_value);
441 return FALSE;
442 }
443
444 cache_ptr->howto = get_howto_table (abfd) + r;
445 return TRUE;
446 }
447 \f
448 /* This function handles relaxing for SH ELF. See the corresponding
449 function in coff-sh.c for a description of what this does. FIXME:
450 There is a lot of duplication here between this code and the COFF
451 specific code. The format of relocs and symbols is wound deeply
452 into this code, but it would still be better if the duplication
453 could be eliminated somehow. Note in particular that although both
454 functions use symbols like R_SH_CODE, those symbols have different
455 values; in coff-sh.c they come from include/coff/sh.h, whereas here
456 they come from enum elf_sh_reloc_type in include/elf/sh.h. */
457
458 static bfd_boolean
459 sh_elf_relax_section (bfd *abfd, asection *sec,
460 struct bfd_link_info *link_info, bfd_boolean *again)
461 {
462 Elf_Internal_Shdr *symtab_hdr;
463 Elf_Internal_Rela *internal_relocs;
464 bfd_boolean have_code;
465 Elf_Internal_Rela *irel, *irelend;
466 bfd_byte *contents = NULL;
467 Elf_Internal_Sym *isymbuf = NULL;
468
469 *again = FALSE;
470
471 if (bfd_link_relocatable (link_info)
472 || (sec->flags & SEC_RELOC) == 0
473 || sec->reloc_count == 0)
474 return TRUE;
475
476 symtab_hdr = &elf_symtab_hdr (abfd);
477
478 internal_relocs = (_bfd_elf_link_read_relocs
479 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
480 link_info->keep_memory));
481 if (internal_relocs == NULL)
482 goto error_return;
483
484 have_code = FALSE;
485
486 irelend = internal_relocs + sec->reloc_count;
487 for (irel = internal_relocs; irel < irelend; irel++)
488 {
489 bfd_vma laddr, paddr, symval;
490 unsigned short insn;
491 Elf_Internal_Rela *irelfn, *irelscan, *irelcount;
492 bfd_signed_vma foff;
493
494 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE)
495 have_code = TRUE;
496
497 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES)
498 continue;
499
500 /* Get the section contents. */
501 if (contents == NULL)
502 {
503 if (elf_section_data (sec)->this_hdr.contents != NULL)
504 contents = elf_section_data (sec)->this_hdr.contents;
505 else
506 {
507 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
508 goto error_return;
509 }
510 }
511
512 /* The r_addend field of the R_SH_USES reloc will point us to
513 the register load. The 4 is because the r_addend field is
514 computed as though it were a jump offset, which are based
515 from 4 bytes after the jump instruction. */
516 laddr = irel->r_offset + 4 + irel->r_addend;
517 if (laddr >= sec->size)
518 {
519 /* xgettext:c-format */
520 _bfd_error_handler
521 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES offset"),
522 abfd, (uint64_t) irel->r_offset);
523 continue;
524 }
525 insn = bfd_get_16 (abfd, contents + laddr);
526
527 /* If the instruction is not mov.l NN,rN, we don't know what to
528 do. */
529 if ((insn & 0xf000) != 0xd000)
530 {
531 _bfd_error_handler
532 /* xgettext:c-format */
533 (_("%pB: %#" PRIx64 ": warning: "
534 "R_SH_USES points to unrecognized insn 0x%x"),
535 abfd, (uint64_t) irel->r_offset, insn);
536 continue;
537 }
538
539 /* Get the address from which the register is being loaded. The
540 displacement in the mov.l instruction is quadrupled. It is a
541 displacement from four bytes after the movl instruction, but,
542 before adding in the PC address, two least significant bits
543 of the PC are cleared. We assume that the section is aligned
544 on a four byte boundary. */
545 paddr = insn & 0xff;
546 paddr *= 4;
547 paddr += (laddr + 4) &~ (bfd_vma) 3;
548 if (paddr >= sec->size)
549 {
550 _bfd_error_handler
551 /* xgettext:c-format */
552 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES load offset"),
553 abfd, (uint64_t) irel->r_offset);
554 continue;
555 }
556
557 /* Get the reloc for the address from which the register is
558 being loaded. This reloc will tell us which function is
559 actually being called. */
560 for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
561 if (irelfn->r_offset == paddr
562 && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32)
563 break;
564 if (irelfn >= irelend)
565 {
566 _bfd_error_handler
567 /* xgettext:c-format */
568 (_("%pB: %#" PRIx64 ": warning: could not find expected reloc"),
569 abfd, (uint64_t) paddr);
570 continue;
571 }
572
573 /* Read this BFD's symbols if we haven't done so already. */
574 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
575 {
576 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
577 if (isymbuf == NULL)
578 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
579 symtab_hdr->sh_info, 0,
580 NULL, NULL, NULL);
581 if (isymbuf == NULL)
582 goto error_return;
583 }
584
585 /* Get the value of the symbol referred to by the reloc. */
586 if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
587 {
588 /* A local symbol. */
589 Elf_Internal_Sym *isym;
590
591 isym = isymbuf + ELF32_R_SYM (irelfn->r_info);
592 if (isym->st_shndx
593 != (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec))
594 {
595 _bfd_error_handler
596 /* xgettext:c-format */
597 (_("%pB: %#" PRIx64 ": warning: symbol in unexpected section"),
598 abfd, (uint64_t) paddr);
599 continue;
600 }
601
602 symval = (isym->st_value
603 + sec->output_section->vma
604 + sec->output_offset);
605 }
606 else
607 {
608 unsigned long indx;
609 struct elf_link_hash_entry *h;
610
611 indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info;
612 h = elf_sym_hashes (abfd)[indx];
613 BFD_ASSERT (h != NULL);
614 if (h->root.type != bfd_link_hash_defined
615 && h->root.type != bfd_link_hash_defweak)
616 {
617 /* This appears to be a reference to an undefined
618 symbol. Just ignore it--it will be caught by the
619 regular reloc processing. */
620 continue;
621 }
622
623 symval = (h->root.u.def.value
624 + h->root.u.def.section->output_section->vma
625 + h->root.u.def.section->output_offset);
626 }
627
628 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
629 symval += bfd_get_32 (abfd, contents + paddr);
630 else
631 symval += irelfn->r_addend;
632
633 /* See if this function call can be shortened. */
634 foff = (symval
635 - (irel->r_offset
636 + sec->output_section->vma
637 + sec->output_offset
638 + 4));
639 /* A branch to an address beyond ours might be increased by an
640 .align that doesn't move when bytes behind us are deleted.
641 So, we add some slop in this calculation to allow for
642 that. */
643 if (foff < -0x1000 || foff >= 0x1000 - 8)
644 {
645 /* After all that work, we can't shorten this function call. */
646 continue;
647 }
648
649 /* Shorten the function call. */
650
651 /* For simplicity of coding, we are going to modify the section
652 contents, the section relocs, and the BFD symbol table. We
653 must tell the rest of the code not to free up this
654 information. It would be possible to instead create a table
655 of changes which have to be made, as is done in coff-mips.c;
656 that would be more work, but would require less memory when
657 the linker is run. */
658
659 elf_section_data (sec)->relocs = internal_relocs;
660 elf_section_data (sec)->this_hdr.contents = contents;
661 symtab_hdr->contents = (unsigned char *) isymbuf;
662
663 /* Replace the jmp/jsr with a bra/bsr. */
664
665 /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
666 replace the jmp/jsr with a bra/bsr. */
667 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W);
668 /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
669 here, but that only checks if the symbol is an external symbol,
670 not if the symbol is in a different section. Besides, we need
671 a consistent meaning for the relocation, so we just assume here that
672 the value of the symbol is not available. */
673
674 /* We can't fully resolve this yet, because the external
675 symbol value may be changed by future relaxing. We let
676 the final link phase handle it. */
677 if (bfd_get_16 (abfd, contents + irel->r_offset) & 0x0020)
678 bfd_put_16 (abfd, (bfd_vma) 0xa000, contents + irel->r_offset);
679 else
680 bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
681
682 irel->r_addend = -4;
683
684 /* When we calculated the symbol "value" we had an offset in the
685 DIR32's word in memory (we read and add it above). However,
686 the jsr we create does NOT have this offset encoded, so we
687 have to add it to the addend to preserve it. */
688 irel->r_addend += bfd_get_32 (abfd, contents + paddr);
689
690 /* See if there is another R_SH_USES reloc referring to the same
691 register load. */
692 for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
693 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES
694 && laddr == irelscan->r_offset + 4 + irelscan->r_addend)
695 break;
696 if (irelscan < irelend)
697 {
698 /* Some other function call depends upon this register load,
699 and we have not yet converted that function call.
700 Indeed, we may never be able to convert it. There is
701 nothing else we can do at this point. */
702 continue;
703 }
704
705 /* Look for a R_SH_COUNT reloc on the location where the
706 function address is stored. Do this before deleting any
707 bytes, to avoid confusion about the address. */
708 for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
709 if (irelcount->r_offset == paddr
710 && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT)
711 break;
712
713 /* Delete the register load. */
714 if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2))
715 goto error_return;
716
717 /* That will change things, so, just in case it permits some
718 other function call to come within range, we should relax
719 again. Note that this is not required, and it may be slow. */
720 *again = TRUE;
721
722 /* Now check whether we got a COUNT reloc. */
723 if (irelcount >= irelend)
724 {
725 _bfd_error_handler
726 /* xgettext:c-format */
727 (_("%pB: %#" PRIx64 ": warning: "
728 "could not find expected COUNT reloc"),
729 abfd, (uint64_t) paddr);
730 continue;
731 }
732
733 /* The number of uses is stored in the r_addend field. We've
734 just deleted one. */
735 if (irelcount->r_addend == 0)
736 {
737 /* xgettext:c-format */
738 _bfd_error_handler (_("%pB: %#" PRIx64 ": warning: bad count"),
739 abfd, (uint64_t) paddr);
740 continue;
741 }
742
743 --irelcount->r_addend;
744
745 /* If there are no more uses, we can delete the address. Reload
746 the address from irelfn, in case it was changed by the
747 previous call to sh_elf_relax_delete_bytes. */
748 if (irelcount->r_addend == 0)
749 {
750 if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4))
751 goto error_return;
752 }
753
754 /* We've done all we can with that function call. */
755 }
756
757 /* Look for load and store instructions that we can align on four
758 byte boundaries. */
759 if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4
760 && have_code)
761 {
762 bfd_boolean swapped;
763
764 /* Get the section contents. */
765 if (contents == NULL)
766 {
767 if (elf_section_data (sec)->this_hdr.contents != NULL)
768 contents = elf_section_data (sec)->this_hdr.contents;
769 else
770 {
771 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
772 goto error_return;
773 }
774 }
775
776 if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents,
777 &swapped))
778 goto error_return;
779
780 if (swapped)
781 {
782 elf_section_data (sec)->relocs = internal_relocs;
783 elf_section_data (sec)->this_hdr.contents = contents;
784 symtab_hdr->contents = (unsigned char *) isymbuf;
785 }
786 }
787
788 if (isymbuf != NULL
789 && symtab_hdr->contents != (unsigned char *) isymbuf)
790 {
791 if (! link_info->keep_memory)
792 free (isymbuf);
793 else
794 {
795 /* Cache the symbols for elf_link_input_bfd. */
796 symtab_hdr->contents = (unsigned char *) isymbuf;
797 }
798 }
799
800 if (contents != NULL
801 && elf_section_data (sec)->this_hdr.contents != contents)
802 {
803 if (! link_info->keep_memory)
804 free (contents);
805 else
806 {
807 /* Cache the section contents for elf_link_input_bfd. */
808 elf_section_data (sec)->this_hdr.contents = contents;
809 }
810 }
811
812 if (elf_section_data (sec)->relocs != internal_relocs)
813 free (internal_relocs);
814
815 return TRUE;
816
817 error_return:
818 if (symtab_hdr->contents != (unsigned char *) isymbuf)
819 free (isymbuf);
820 if (elf_section_data (sec)->this_hdr.contents != contents)
821 free (contents);
822 if (elf_section_data (sec)->relocs != internal_relocs)
823 free (internal_relocs);
824
825 return FALSE;
826 }
827
828 /* Delete some bytes from a section while relaxing. FIXME: There is a
829 lot of duplication between this function and sh_relax_delete_bytes
830 in coff-sh.c. */
831
832 static bfd_boolean
833 sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr,
834 int count)
835 {
836 Elf_Internal_Shdr *symtab_hdr;
837 unsigned int sec_shndx;
838 bfd_byte *contents;
839 Elf_Internal_Rela *irel, *irelend;
840 Elf_Internal_Rela *irelalign;
841 bfd_vma toaddr;
842 Elf_Internal_Sym *isymbuf, *isym, *isymend;
843 struct elf_link_hash_entry **sym_hashes;
844 struct elf_link_hash_entry **end_hashes;
845 unsigned int symcount;
846 asection *o;
847
848 symtab_hdr = &elf_symtab_hdr (abfd);
849 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
850
851 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
852
853 contents = elf_section_data (sec)->this_hdr.contents;
854
855 /* The deletion must stop at the next ALIGN reloc for an alignment
856 power larger than the number of bytes we are deleting. */
857
858 irelalign = NULL;
859 toaddr = sec->size;
860
861 irel = elf_section_data (sec)->relocs;
862 irelend = irel + sec->reloc_count;
863 for (; irel < irelend; irel++)
864 {
865 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
866 && irel->r_offset > addr
867 && count < (1 << irel->r_addend))
868 {
869 irelalign = irel;
870 toaddr = irel->r_offset;
871 break;
872 }
873 }
874
875 /* Actually delete the bytes. */
876 memmove (contents + addr, contents + addr + count,
877 (size_t) (toaddr - addr - count));
878 if (irelalign == NULL)
879 sec->size -= count;
880 else
881 {
882 int i;
883
884 #define NOP_OPCODE (0x0009)
885
886 BFD_ASSERT ((count & 1) == 0);
887 for (i = 0; i < count; i += 2)
888 bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
889 }
890
891 /* Adjust all the relocs. */
892 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
893 {
894 bfd_vma nraddr, stop;
895 bfd_vma start = 0;
896 int insn = 0;
897 int off, adjust, oinsn;
898 bfd_signed_vma voff = 0;
899 bfd_boolean overflow;
900
901 /* Get the new reloc address. */
902 nraddr = irel->r_offset;
903 if ((irel->r_offset > addr
904 && irel->r_offset < toaddr)
905 || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
906 && irel->r_offset == toaddr))
907 nraddr -= count;
908
909 /* See if this reloc was for the bytes we have deleted, in which
910 case we no longer care about it. Don't delete relocs which
911 represent addresses, though. */
912 if (irel->r_offset >= addr
913 && irel->r_offset < addr + count
914 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN
915 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE
916 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA
917 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL)
918 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
919 (int) R_SH_NONE);
920
921 /* If this is a PC relative reloc, see if the range it covers
922 includes the bytes we have deleted. */
923 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
924 {
925 default:
926 break;
927
928 case R_SH_DIR8WPN:
929 case R_SH_IND12W:
930 case R_SH_DIR8WPZ:
931 case R_SH_DIR8WPL:
932 start = irel->r_offset;
933 insn = bfd_get_16 (abfd, contents + nraddr);
934 break;
935 }
936
937 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
938 {
939 default:
940 start = stop = addr;
941 break;
942
943 case R_SH_DIR32:
944 /* If this reloc is against a symbol defined in this
945 section, and the symbol will not be adjusted below, we
946 must check the addend to see it will put the value in
947 range to be adjusted, and hence must be changed. */
948 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
949 {
950 isym = isymbuf + ELF32_R_SYM (irel->r_info);
951 if (isym->st_shndx == sec_shndx
952 && (isym->st_value <= addr
953 || isym->st_value >= toaddr))
954 {
955 bfd_vma val;
956
957 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
958 {
959 val = bfd_get_32 (abfd, contents + nraddr);
960 val += isym->st_value;
961 if (val > addr && val < toaddr)
962 bfd_put_32 (abfd, val - count, contents + nraddr);
963 }
964 else
965 {
966 val = isym->st_value + irel->r_addend;
967 if (val > addr && val < toaddr)
968 irel->r_addend -= count;
969 }
970 }
971 }
972 start = stop = addr;
973 break;
974
975 case R_SH_DIR8WPN:
976 off = insn & 0xff;
977 if (off & 0x80)
978 off -= 0x100;
979 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
980 break;
981
982 case R_SH_IND12W:
983 off = insn & 0xfff;
984 if (! off)
985 {
986 /* This has been made by previous relaxation. Since the
987 relocation will be against an external symbol, the
988 final relocation will just do the right thing. */
989 start = stop = addr;
990 }
991 else
992 {
993 if (off & 0x800)
994 off -= 0x1000;
995 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
996
997 /* The addend will be against the section symbol, thus
998 for adjusting the addend, the relevant start is the
999 start of the section.
1000 N.B. If we want to abandon in-place changes here and
1001 test directly using symbol + addend, we have to take into
1002 account that the addend has already been adjusted by -4. */
1003 if (stop > addr && stop < toaddr)
1004 irel->r_addend -= count;
1005 }
1006 break;
1007
1008 case R_SH_DIR8WPZ:
1009 off = insn & 0xff;
1010 stop = start + 4 + off * 2;
1011 break;
1012
1013 case R_SH_DIR8WPL:
1014 off = insn & 0xff;
1015 stop = (start & ~(bfd_vma) 3) + 4 + off * 4;
1016 break;
1017
1018 case R_SH_SWITCH8:
1019 case R_SH_SWITCH16:
1020 case R_SH_SWITCH32:
1021 /* These relocs types represent
1022 .word L2-L1
1023 The r_addend field holds the difference between the reloc
1024 address and L1. That is the start of the reloc, and
1025 adding in the contents gives us the top. We must adjust
1026 both the r_offset field and the section contents.
1027 N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1028 and the elf bfd r_offset is called r_vaddr. */
1029
1030 stop = irel->r_offset;
1031 start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend);
1032
1033 if (start > addr
1034 && start < toaddr
1035 && (stop <= addr || stop >= toaddr))
1036 irel->r_addend += count;
1037 else if (stop > addr
1038 && stop < toaddr
1039 && (start <= addr || start >= toaddr))
1040 irel->r_addend -= count;
1041
1042 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16)
1043 voff = bfd_get_signed_16 (abfd, contents + nraddr);
1044 else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8)
1045 voff = bfd_get_8 (abfd, contents + nraddr);
1046 else
1047 voff = bfd_get_signed_32 (abfd, contents + nraddr);
1048 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1049
1050 break;
1051
1052 case R_SH_USES:
1053 start = irel->r_offset;
1054 stop = (bfd_vma) ((bfd_signed_vma) start
1055 + (long) irel->r_addend
1056 + 4);
1057 break;
1058 }
1059
1060 if (start > addr
1061 && start < toaddr
1062 && (stop <= addr || stop >= toaddr))
1063 adjust = count;
1064 else if (stop > addr
1065 && stop < toaddr
1066 && (start <= addr || start >= toaddr))
1067 adjust = - count;
1068 else
1069 adjust = 0;
1070
1071 if (adjust != 0)
1072 {
1073 oinsn = insn;
1074 overflow = FALSE;
1075 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
1076 {
1077 default:
1078 abort ();
1079 break;
1080
1081 case R_SH_DIR8WPN:
1082 case R_SH_DIR8WPZ:
1083 insn += adjust / 2;
1084 if ((oinsn & 0xff00) != (insn & 0xff00))
1085 overflow = TRUE;
1086 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1087 break;
1088
1089 case R_SH_IND12W:
1090 insn += adjust / 2;
1091 if ((oinsn & 0xf000) != (insn & 0xf000))
1092 overflow = TRUE;
1093 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1094 break;
1095
1096 case R_SH_DIR8WPL:
1097 BFD_ASSERT (adjust == count || count >= 4);
1098 if (count >= 4)
1099 insn += adjust / 4;
1100 else
1101 {
1102 if ((irel->r_offset & 3) == 0)
1103 ++insn;
1104 }
1105 if ((oinsn & 0xff00) != (insn & 0xff00))
1106 overflow = TRUE;
1107 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1108 break;
1109
1110 case R_SH_SWITCH8:
1111 voff += adjust;
1112 if (voff < 0 || voff >= 0xff)
1113 overflow = TRUE;
1114 bfd_put_8 (abfd, voff, contents + nraddr);
1115 break;
1116
1117 case R_SH_SWITCH16:
1118 voff += adjust;
1119 if (voff < - 0x8000 || voff >= 0x8000)
1120 overflow = TRUE;
1121 bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr);
1122 break;
1123
1124 case R_SH_SWITCH32:
1125 voff += adjust;
1126 bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr);
1127 break;
1128
1129 case R_SH_USES:
1130 irel->r_addend += adjust;
1131 break;
1132 }
1133
1134 if (overflow)
1135 {
1136 _bfd_error_handler
1137 /* xgettext:c-format */
1138 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1139 abfd, (uint64_t) irel->r_offset);
1140 bfd_set_error (bfd_error_bad_value);
1141 return FALSE;
1142 }
1143 }
1144
1145 irel->r_offset = nraddr;
1146 }
1147
1148 /* Look through all the other sections. If there contain any IMM32
1149 relocs against internal symbols which we are not going to adjust
1150 below, we may need to adjust the addends. */
1151 for (o = abfd->sections; o != NULL; o = o->next)
1152 {
1153 Elf_Internal_Rela *internal_relocs;
1154 Elf_Internal_Rela *irelscan, *irelscanend;
1155 bfd_byte *ocontents;
1156
1157 if (o == sec
1158 || (o->flags & SEC_RELOC) == 0
1159 || o->reloc_count == 0)
1160 continue;
1161
1162 /* We always cache the relocs. Perhaps, if info->keep_memory is
1163 FALSE, we should free them, if we are permitted to, when we
1164 leave sh_coff_relax_section. */
1165 internal_relocs = (_bfd_elf_link_read_relocs
1166 (abfd, o, NULL, (Elf_Internal_Rela *) NULL, TRUE));
1167 if (internal_relocs == NULL)
1168 return FALSE;
1169
1170 ocontents = NULL;
1171 irelscanend = internal_relocs + o->reloc_count;
1172 for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
1173 {
1174 /* Dwarf line numbers use R_SH_SWITCH32 relocs. */
1175 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32)
1176 {
1177 bfd_vma start, stop;
1178 bfd_signed_vma voff;
1179
1180 if (ocontents == NULL)
1181 {
1182 if (elf_section_data (o)->this_hdr.contents != NULL)
1183 ocontents = elf_section_data (o)->this_hdr.contents;
1184 else
1185 {
1186 /* We always cache the section contents.
1187 Perhaps, if info->keep_memory is FALSE, we
1188 should free them, if we are permitted to,
1189 when we leave sh_coff_relax_section. */
1190 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1191 {
1192 free (ocontents);
1193 return FALSE;
1194 }
1195
1196 elf_section_data (o)->this_hdr.contents = ocontents;
1197 }
1198 }
1199
1200 stop = irelscan->r_offset;
1201 start
1202 = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend);
1203
1204 /* STOP is in a different section, so it won't change. */
1205 if (start > addr && start < toaddr)
1206 irelscan->r_addend += count;
1207
1208 voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset);
1209 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1210
1211 if (start > addr
1212 && start < toaddr
1213 && (stop <= addr || stop >= toaddr))
1214 bfd_put_signed_32 (abfd, (bfd_vma) voff + count,
1215 ocontents + irelscan->r_offset);
1216 else if (stop > addr
1217 && stop < toaddr
1218 && (start <= addr || start >= toaddr))
1219 bfd_put_signed_32 (abfd, (bfd_vma) voff - count,
1220 ocontents + irelscan->r_offset);
1221 }
1222
1223 if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32)
1224 continue;
1225
1226 if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info)
1227 continue;
1228
1229
1230 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1231 if (isym->st_shndx == sec_shndx
1232 && (isym->st_value <= addr
1233 || isym->st_value >= toaddr))
1234 {
1235 bfd_vma val;
1236
1237 if (ocontents == NULL)
1238 {
1239 if (elf_section_data (o)->this_hdr.contents != NULL)
1240 ocontents = elf_section_data (o)->this_hdr.contents;
1241 else
1242 {
1243 /* We always cache the section contents.
1244 Perhaps, if info->keep_memory is FALSE, we
1245 should free them, if we are permitted to,
1246 when we leave sh_coff_relax_section. */
1247 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1248 {
1249 free (ocontents);
1250 return FALSE;
1251 }
1252
1253 elf_section_data (o)->this_hdr.contents = ocontents;
1254 }
1255 }
1256
1257 val = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
1258 val += isym->st_value;
1259 if (val > addr && val < toaddr)
1260 bfd_put_32 (abfd, val - count,
1261 ocontents + irelscan->r_offset);
1262 }
1263 }
1264 }
1265
1266 /* Adjust the local symbols defined in this section. */
1267 isymend = isymbuf + symtab_hdr->sh_info;
1268 for (isym = isymbuf; isym < isymend; isym++)
1269 {
1270 if (isym->st_shndx == sec_shndx
1271 && isym->st_value > addr
1272 && isym->st_value < toaddr)
1273 isym->st_value -= count;
1274 }
1275
1276 /* Now adjust the global symbols defined in this section. */
1277 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1278 - symtab_hdr->sh_info);
1279 sym_hashes = elf_sym_hashes (abfd);
1280 end_hashes = sym_hashes + symcount;
1281 for (; sym_hashes < end_hashes; sym_hashes++)
1282 {
1283 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1284 if ((sym_hash->root.type == bfd_link_hash_defined
1285 || sym_hash->root.type == bfd_link_hash_defweak)
1286 && sym_hash->root.u.def.section == sec
1287 && sym_hash->root.u.def.value > addr
1288 && sym_hash->root.u.def.value < toaddr)
1289 {
1290 sym_hash->root.u.def.value -= count;
1291 }
1292 }
1293
1294 /* See if we can move the ALIGN reloc forward. We have adjusted
1295 r_offset for it already. */
1296 if (irelalign != NULL)
1297 {
1298 bfd_vma alignto, alignaddr;
1299
1300 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
1301 alignaddr = BFD_ALIGN (irelalign->r_offset,
1302 1 << irelalign->r_addend);
1303 if (alignto != alignaddr)
1304 {
1305 /* Tail recursion. */
1306 return sh_elf_relax_delete_bytes (abfd, sec, alignaddr,
1307 (int) (alignto - alignaddr));
1308 }
1309 }
1310
1311 return TRUE;
1312 }
1313
1314 /* Look for loads and stores which we can align to four byte
1315 boundaries. This is like sh_align_loads in coff-sh.c. */
1316
1317 static bfd_boolean
1318 sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1319 Elf_Internal_Rela *internal_relocs,
1320 bfd_byte *contents ATTRIBUTE_UNUSED,
1321 bfd_boolean *pswapped)
1322 {
1323 Elf_Internal_Rela *irel, *irelend;
1324 bfd_vma *labels = NULL;
1325 bfd_vma *label, *label_end;
1326 bfd_size_type amt;
1327
1328 *pswapped = FALSE;
1329
1330 irelend = internal_relocs + sec->reloc_count;
1331
1332 /* Get all the addresses with labels on them. */
1333 amt = sec->reloc_count;
1334 amt *= sizeof (bfd_vma);
1335 labels = (bfd_vma *) bfd_malloc (amt);
1336 if (labels == NULL)
1337 goto error_return;
1338 label_end = labels;
1339 for (irel = internal_relocs; irel < irelend; irel++)
1340 {
1341 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL)
1342 {
1343 *label_end = irel->r_offset;
1344 ++label_end;
1345 }
1346 }
1347
1348 /* Note that the assembler currently always outputs relocs in
1349 address order. If that ever changes, this code will need to sort
1350 the label values and the relocs. */
1351
1352 label = labels;
1353
1354 for (irel = internal_relocs; irel < irelend; irel++)
1355 {
1356 bfd_vma start, stop;
1357
1358 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE)
1359 continue;
1360
1361 start = irel->r_offset;
1362
1363 for (irel++; irel < irelend; irel++)
1364 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA)
1365 break;
1366 if (irel < irelend)
1367 stop = irel->r_offset;
1368 else
1369 stop = sec->size;
1370
1371 if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns,
1372 internal_relocs, &label,
1373 label_end, start, stop, pswapped))
1374 goto error_return;
1375 }
1376
1377 free (labels);
1378
1379 return TRUE;
1380
1381 error_return:
1382 free (labels);
1383 return FALSE;
1384 }
1385
1386 /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */
1387
1388 static bfd_boolean
1389 sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs,
1390 bfd_byte *contents, bfd_vma addr)
1391 {
1392 Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs;
1393 unsigned short i1, i2;
1394 Elf_Internal_Rela *irel, *irelend;
1395
1396 /* Swap the instructions themselves. */
1397 i1 = bfd_get_16 (abfd, contents + addr);
1398 i2 = bfd_get_16 (abfd, contents + addr + 2);
1399 bfd_put_16 (abfd, (bfd_vma) i2, contents + addr);
1400 bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2);
1401
1402 /* Adjust all reloc addresses. */
1403 irelend = internal_relocs + sec->reloc_count;
1404 for (irel = internal_relocs; irel < irelend; irel++)
1405 {
1406 enum elf_sh_reloc_type type;
1407 int add;
1408
1409 /* There are a few special types of relocs that we don't want to
1410 adjust. These relocs do not apply to the instruction itself,
1411 but are only associated with the address. */
1412 type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info);
1413 if (type == R_SH_ALIGN
1414 || type == R_SH_CODE
1415 || type == R_SH_DATA
1416 || type == R_SH_LABEL)
1417 continue;
1418
1419 /* If an R_SH_USES reloc points to one of the addresses being
1420 swapped, we must adjust it. It would be incorrect to do this
1421 for a jump, though, since we want to execute both
1422 instructions after the jump. (We have avoided swapping
1423 around a label, so the jump will not wind up executing an
1424 instruction it shouldn't). */
1425 if (type == R_SH_USES)
1426 {
1427 bfd_vma off;
1428
1429 off = irel->r_offset + 4 + irel->r_addend;
1430 if (off == addr)
1431 irel->r_offset += 2;
1432 else if (off == addr + 2)
1433 irel->r_offset -= 2;
1434 }
1435
1436 if (irel->r_offset == addr)
1437 {
1438 irel->r_offset += 2;
1439 add = -2;
1440 }
1441 else if (irel->r_offset == addr + 2)
1442 {
1443 irel->r_offset -= 2;
1444 add = 2;
1445 }
1446 else
1447 add = 0;
1448
1449 if (add != 0)
1450 {
1451 bfd_byte *loc;
1452 unsigned short insn, oinsn;
1453 bfd_boolean overflow;
1454
1455 loc = contents + irel->r_offset;
1456 overflow = FALSE;
1457 switch (type)
1458 {
1459 default:
1460 break;
1461
1462 case R_SH_DIR8WPN:
1463 case R_SH_DIR8WPZ:
1464 insn = bfd_get_16 (abfd, loc);
1465 oinsn = insn;
1466 insn += add / 2;
1467 if ((oinsn & 0xff00) != (insn & 0xff00))
1468 overflow = TRUE;
1469 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1470 break;
1471
1472 case R_SH_IND12W:
1473 insn = bfd_get_16 (abfd, loc);
1474 oinsn = insn;
1475 insn += add / 2;
1476 if ((oinsn & 0xf000) != (insn & 0xf000))
1477 overflow = TRUE;
1478 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1479 break;
1480
1481 case R_SH_DIR8WPL:
1482 /* This reloc ignores the least significant 3 bits of
1483 the program counter before adding in the offset.
1484 This means that if ADDR is at an even address, the
1485 swap will not affect the offset. If ADDR is an at an
1486 odd address, then the instruction will be crossing a
1487 four byte boundary, and must be adjusted. */
1488 if ((addr & 3) != 0)
1489 {
1490 insn = bfd_get_16 (abfd, loc);
1491 oinsn = insn;
1492 insn += add / 2;
1493 if ((oinsn & 0xff00) != (insn & 0xff00))
1494 overflow = TRUE;
1495 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1496 }
1497
1498 break;
1499 }
1500
1501 if (overflow)
1502 {
1503 _bfd_error_handler
1504 /* xgettext:c-format */
1505 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1506 abfd, (uint64_t) irel->r_offset);
1507 bfd_set_error (bfd_error_bad_value);
1508 return FALSE;
1509 }
1510 }
1511 }
1512
1513 return TRUE;
1514 }
1515 \f
1516 /* Describes one of the various PLT styles. */
1517
1518 struct elf_sh_plt_info
1519 {
1520 /* The template for the first PLT entry, or NULL if there is no special
1521 first entry. */
1522 const bfd_byte *plt0_entry;
1523
1524 /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */
1525 bfd_vma plt0_entry_size;
1526
1527 /* Index I is the offset into PLT0_ENTRY of a pointer to
1528 _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE
1529 if there is no such pointer. */
1530 bfd_vma plt0_got_fields[3];
1531
1532 /* The template for a symbol's PLT entry. */
1533 const bfd_byte *symbol_entry;
1534
1535 /* The size of SYMBOL_ENTRY in bytes. */
1536 bfd_vma symbol_entry_size;
1537
1538 /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used
1539 on all targets. The comments by each member indicate the value
1540 that the field must hold. */
1541 struct {
1542 bfd_vma got_entry; /* the address of the symbol's .got.plt entry */
1543 bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */
1544 bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */
1545 bfd_boolean got20; /* TRUE if got_entry points to a movi20
1546 instruction (instead of a constant pool
1547 entry). */
1548 } symbol_fields;
1549
1550 /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
1551 bfd_vma symbol_resolve_offset;
1552
1553 /* A different PLT layout which can be used for the first
1554 MAX_SHORT_PLT entries. It must share the same plt0. NULL in
1555 other cases. */
1556 const struct elf_sh_plt_info *short_plt;
1557 };
1558
1559 /* The size in bytes of an entry in the procedure linkage table. */
1560
1561 #define ELF_PLT_ENTRY_SIZE 28
1562
1563 /* First entry in an absolute procedure linkage table look like this. */
1564
1565 /* Note - this code has been "optimised" not to use r2. r2 is used by
1566 GCC to return the address of large structures, so it should not be
1567 corrupted here. This does mean however, that this PLT does not conform
1568 to the SH PIC ABI. That spec says that r0 contains the type of the PLT
1569 and r2 contains the GOT id. This version stores the GOT id in r0 and
1570 ignores the type. Loaders can easily detect this difference however,
1571 since the type will always be 0 or 8, and the GOT ids will always be
1572 greater than or equal to 12. */
1573 static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1574 {
1575 0xd0, 0x05, /* mov.l 2f,r0 */
1576 0x60, 0x02, /* mov.l @r0,r0 */
1577 0x2f, 0x06, /* mov.l r0,@-r15 */
1578 0xd0, 0x03, /* mov.l 1f,r0 */
1579 0x60, 0x02, /* mov.l @r0,r0 */
1580 0x40, 0x2b, /* jmp @r0 */
1581 0x60, 0xf6, /* mov.l @r15+,r0 */
1582 0x00, 0x09, /* nop */
1583 0x00, 0x09, /* nop */
1584 0x00, 0x09, /* nop */
1585 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1586 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1587 };
1588
1589 static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1590 {
1591 0x05, 0xd0, /* mov.l 2f,r0 */
1592 0x02, 0x60, /* mov.l @r0,r0 */
1593 0x06, 0x2f, /* mov.l r0,@-r15 */
1594 0x03, 0xd0, /* mov.l 1f,r0 */
1595 0x02, 0x60, /* mov.l @r0,r0 */
1596 0x2b, 0x40, /* jmp @r0 */
1597 0xf6, 0x60, /* mov.l @r15+,r0 */
1598 0x09, 0x00, /* nop */
1599 0x09, 0x00, /* nop */
1600 0x09, 0x00, /* nop */
1601 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1602 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1603 };
1604
1605 /* Sebsequent entries in an absolute procedure linkage table look like
1606 this. */
1607
1608 static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1609 {
1610 0xd0, 0x04, /* mov.l 1f,r0 */
1611 0x60, 0x02, /* mov.l @(r0,r12),r0 */
1612 0xd1, 0x02, /* mov.l 0f,r1 */
1613 0x40, 0x2b, /* jmp @r0 */
1614 0x60, 0x13, /* mov r1,r0 */
1615 0xd1, 0x03, /* mov.l 2f,r1 */
1616 0x40, 0x2b, /* jmp @r0 */
1617 0x00, 0x09, /* nop */
1618 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1619 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1620 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1621 };
1622
1623 static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1624 {
1625 0x04, 0xd0, /* mov.l 1f,r0 */
1626 0x02, 0x60, /* mov.l @r0,r0 */
1627 0x02, 0xd1, /* mov.l 0f,r1 */
1628 0x2b, 0x40, /* jmp @r0 */
1629 0x13, 0x60, /* mov r1,r0 */
1630 0x03, 0xd1, /* mov.l 2f,r1 */
1631 0x2b, 0x40, /* jmp @r0 */
1632 0x09, 0x00, /* nop */
1633 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1634 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1635 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1636 };
1637
1638 /* Entries in a PIC procedure linkage table look like this. */
1639
1640 static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1641 {
1642 0xd0, 0x04, /* mov.l 1f,r0 */
1643 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1644 0x40, 0x2b, /* jmp @r0 */
1645 0x00, 0x09, /* nop */
1646 0x50, 0xc2, /* mov.l @(8,r12),r0 */
1647 0xd1, 0x03, /* mov.l 2f,r1 */
1648 0x40, 0x2b, /* jmp @r0 */
1649 0x50, 0xc1, /* mov.l @(4,r12),r0 */
1650 0x00, 0x09, /* nop */
1651 0x00, 0x09, /* nop */
1652 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1653 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1654 };
1655
1656 static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1657 {
1658 0x04, 0xd0, /* mov.l 1f,r0 */
1659 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1660 0x2b, 0x40, /* jmp @r0 */
1661 0x09, 0x00, /* nop */
1662 0xc2, 0x50, /* mov.l @(8,r12),r0 */
1663 0x03, 0xd1, /* mov.l 2f,r1 */
1664 0x2b, 0x40, /* jmp @r0 */
1665 0xc1, 0x50, /* mov.l @(4,r12),r0 */
1666 0x09, 0x00, /* nop */
1667 0x09, 0x00, /* nop */
1668 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1669 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1670 };
1671
1672 static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1673 {
1674 {
1675 /* Big-endian non-PIC. */
1676 elf_sh_plt0_entry_be,
1677 ELF_PLT_ENTRY_SIZE,
1678 { MINUS_ONE, 24, 20 },
1679 elf_sh_plt_entry_be,
1680 ELF_PLT_ENTRY_SIZE,
1681 { 20, 16, 24, FALSE },
1682 8,
1683 NULL
1684 },
1685 {
1686 /* Little-endian non-PIC. */
1687 elf_sh_plt0_entry_le,
1688 ELF_PLT_ENTRY_SIZE,
1689 { MINUS_ONE, 24, 20 },
1690 elf_sh_plt_entry_le,
1691 ELF_PLT_ENTRY_SIZE,
1692 { 20, 16, 24, FALSE },
1693 8,
1694 NULL
1695 },
1696 },
1697 {
1698 {
1699 /* Big-endian PIC. */
1700 elf_sh_plt0_entry_be,
1701 ELF_PLT_ENTRY_SIZE,
1702 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1703 elf_sh_pic_plt_entry_be,
1704 ELF_PLT_ENTRY_SIZE,
1705 { 20, MINUS_ONE, 24, FALSE },
1706 8,
1707 NULL
1708 },
1709 {
1710 /* Little-endian PIC. */
1711 elf_sh_plt0_entry_le,
1712 ELF_PLT_ENTRY_SIZE,
1713 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1714 elf_sh_pic_plt_entry_le,
1715 ELF_PLT_ENTRY_SIZE,
1716 { 20, MINUS_ONE, 24, FALSE },
1717 8,
1718 NULL
1719 },
1720 }
1721 };
1722
1723 #define VXWORKS_PLT_HEADER_SIZE 12
1724 #define VXWORKS_PLT_ENTRY_SIZE 24
1725
1726 static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] =
1727 {
1728 0xd1, 0x01, /* mov.l @(8,pc),r1 */
1729 0x61, 0x12, /* mov.l @r1,r1 */
1730 0x41, 0x2b, /* jmp @r1 */
1731 0x00, 0x09, /* nop */
1732 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1733 };
1734
1735 static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] =
1736 {
1737 0x01, 0xd1, /* mov.l @(8,pc),r1 */
1738 0x12, 0x61, /* mov.l @r1,r1 */
1739 0x2b, 0x41, /* jmp @r1 */
1740 0x09, 0x00, /* nop */
1741 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1742 };
1743
1744 static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1745 {
1746 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1747 0x60, 0x02, /* mov.l @r0,r0 */
1748 0x40, 0x2b, /* jmp @r0 */
1749 0x00, 0x09, /* nop */
1750 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1751 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1752 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */
1753 0x00, 0x09, /* nop */
1754 0x00, 0x09, /* nop */
1755 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1756 };
1757
1758 static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1759 {
1760 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1761 0x02, 0x60, /* mov.l @r0,r0 */
1762 0x2b, 0x40, /* jmp @r0 */
1763 0x09, 0x00, /* nop */
1764 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1765 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1766 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */
1767 0x09, 0x00, /* nop */
1768 0x09, 0x00, /* nop */
1769 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1770 };
1771
1772 static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1773 {
1774 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1775 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1776 0x40, 0x2b, /* jmp @r0 */
1777 0x00, 0x09, /* nop */
1778 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1779 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1780 0x51, 0xc2, /* mov.l @(8,r12),r1 */
1781 0x41, 0x2b, /* jmp @r1 */
1782 0x00, 0x09, /* nop */
1783 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1784 };
1785
1786 static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1787 {
1788 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1789 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1790 0x2b, 0x40, /* jmp @r0 */
1791 0x09, 0x00, /* nop */
1792 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1793 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1794 0xc2, 0x51, /* mov.l @(8,r12),r1 */
1795 0x2b, 0x41, /* jmp @r1 */
1796 0x09, 0x00, /* nop */
1797 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1798 };
1799
1800 static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = {
1801 {
1802 {
1803 /* Big-endian non-PIC. */
1804 vxworks_sh_plt0_entry_be,
1805 VXWORKS_PLT_HEADER_SIZE,
1806 { MINUS_ONE, MINUS_ONE, 8 },
1807 vxworks_sh_plt_entry_be,
1808 VXWORKS_PLT_ENTRY_SIZE,
1809 { 8, 14, 20, FALSE },
1810 12,
1811 NULL
1812 },
1813 {
1814 /* Little-endian non-PIC. */
1815 vxworks_sh_plt0_entry_le,
1816 VXWORKS_PLT_HEADER_SIZE,
1817 { MINUS_ONE, MINUS_ONE, 8 },
1818 vxworks_sh_plt_entry_le,
1819 VXWORKS_PLT_ENTRY_SIZE,
1820 { 8, 14, 20, FALSE },
1821 12,
1822 NULL
1823 },
1824 },
1825 {
1826 {
1827 /* Big-endian PIC. */
1828 NULL,
1829 0,
1830 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1831 vxworks_sh_pic_plt_entry_be,
1832 VXWORKS_PLT_ENTRY_SIZE,
1833 { 8, MINUS_ONE, 20, FALSE },
1834 12,
1835 NULL
1836 },
1837 {
1838 /* Little-endian PIC. */
1839 NULL,
1840 0,
1841 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1842 vxworks_sh_pic_plt_entry_le,
1843 VXWORKS_PLT_ENTRY_SIZE,
1844 { 8, MINUS_ONE, 20, FALSE },
1845 12,
1846 NULL
1847 },
1848 }
1849 };
1850
1851 /* FDPIC PLT entries. Two unimplemented optimizations for lazy
1852 binding are to omit the lazy binding stub when linking with -z now
1853 and to move lazy binding stubs into a separate region for better
1854 cache behavior. */
1855
1856 #define FDPIC_PLT_ENTRY_SIZE 28
1857 #define FDPIC_PLT_LAZY_OFFSET 20
1858
1859 /* FIXME: The lazy binding stub requires a plt0 - which may need to be
1860 duplicated if it is out of range, or which can be inlined. So
1861 right now it is always inlined, which wastes a word per stub. It
1862 might be easier to handle the duplication if we put the lazy
1863 stubs separately. */
1864
1865 static const bfd_byte fdpic_sh_plt_entry_be[FDPIC_PLT_ENTRY_SIZE] =
1866 {
1867 0xd0, 0x02, /* mov.l @(12,pc),r0 */
1868 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1869 0x70, 0x04, /* add #4, r0 */
1870 0x41, 0x2b, /* jmp @r1 */
1871 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1872 0x00, 0x09, /* nop */
1873 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1874 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1875 0x60, 0xc2, /* mov.l @r12,r0 */
1876 0x40, 0x2b, /* jmp @r0 */
1877 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1878 0x00, 0x09, /* nop */
1879 };
1880
1881 static const bfd_byte fdpic_sh_plt_entry_le[FDPIC_PLT_ENTRY_SIZE] =
1882 {
1883 0x02, 0xd0, /* mov.l @(12,pc),r0 */
1884 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1885 0x04, 0x70, /* add #4, r0 */
1886 0x2b, 0x41, /* jmp @r1 */
1887 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1888 0x09, 0x00, /* nop */
1889 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1890 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1891 0xc2, 0x60, /* mov.l @r12,r0 */
1892 0x2b, 0x40, /* jmp @r0 */
1893 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1894 0x09, 0x00, /* nop */
1895 };
1896
1897 static const struct elf_sh_plt_info fdpic_sh_plts[2] = {
1898 {
1899 /* Big-endian PIC. */
1900 NULL,
1901 0,
1902 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1903 fdpic_sh_plt_entry_be,
1904 FDPIC_PLT_ENTRY_SIZE,
1905 { 12, MINUS_ONE, 16, FALSE },
1906 FDPIC_PLT_LAZY_OFFSET,
1907 NULL
1908 },
1909 {
1910 /* Little-endian PIC. */
1911 NULL,
1912 0,
1913 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1914 fdpic_sh_plt_entry_le,
1915 FDPIC_PLT_ENTRY_SIZE,
1916 { 12, MINUS_ONE, 16, FALSE },
1917 FDPIC_PLT_LAZY_OFFSET,
1918 NULL
1919 },
1920 };
1921
1922 /* On SH2A, we can use the movi20 instruction to generate shorter PLT
1923 entries for the first 64K slots. We use the normal FDPIC PLT entry
1924 past that point; we could also use movi20s, which might be faster,
1925 but would not be any smaller. */
1926
1927 #define FDPIC_SH2A_PLT_ENTRY_SIZE 24
1928 #define FDPIC_SH2A_PLT_LAZY_OFFSET 16
1929
1930 static const bfd_byte fdpic_sh2a_plt_entry_be[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1931 {
1932 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1933 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1934 0x70, 0x04, /* add #4, r0 */
1935 0x41, 0x2b, /* jmp @r1 */
1936 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1937 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1938 0x60, 0xc2, /* mov.l @r12,r0 */
1939 0x40, 0x2b, /* jmp @r0 */
1940 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1941 0x00, 0x09, /* nop */
1942 };
1943
1944 static const bfd_byte fdpic_sh2a_plt_entry_le[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1945 {
1946 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1947 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1948 0x04, 0x70, /* add #4, r0 */
1949 0x2b, 0x41, /* jmp @r1 */
1950 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1951 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1952 0xc2, 0x60, /* mov.l @r12,r0 */
1953 0x2b, 0x40, /* jmp @r0 */
1954 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1955 0x09, 0x00, /* nop */
1956 };
1957
1958 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_be = {
1959 /* Big-endian FDPIC, max index 64K. */
1960 NULL,
1961 0,
1962 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1963 fdpic_sh2a_plt_entry_be,
1964 FDPIC_SH2A_PLT_ENTRY_SIZE,
1965 { 0, MINUS_ONE, 12, TRUE },
1966 FDPIC_SH2A_PLT_LAZY_OFFSET,
1967 NULL
1968 };
1969
1970 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_le = {
1971 /* Little-endian FDPIC, max index 64K. */
1972 NULL,
1973 0,
1974 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1975 fdpic_sh2a_plt_entry_le,
1976 FDPIC_SH2A_PLT_ENTRY_SIZE,
1977 { 0, MINUS_ONE, 12, TRUE },
1978 FDPIC_SH2A_PLT_LAZY_OFFSET,
1979 NULL
1980 };
1981
1982 static const struct elf_sh_plt_info fdpic_sh2a_plts[2] = {
1983 {
1984 /* Big-endian PIC. */
1985 NULL,
1986 0,
1987 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1988 fdpic_sh_plt_entry_be,
1989 FDPIC_PLT_ENTRY_SIZE,
1990 { 12, MINUS_ONE, 16, FALSE },
1991 FDPIC_PLT_LAZY_OFFSET,
1992 &fdpic_sh2a_short_plt_be
1993 },
1994 {
1995 /* Little-endian PIC. */
1996 NULL,
1997 0,
1998 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1999 fdpic_sh_plt_entry_le,
2000 FDPIC_PLT_ENTRY_SIZE,
2001 { 12, MINUS_ONE, 16, FALSE },
2002 FDPIC_PLT_LAZY_OFFSET,
2003 &fdpic_sh2a_short_plt_le
2004 },
2005 };
2006
2007 /* Return the type of PLT associated with ABFD. PIC_P is true if
2008 the object is position-independent. */
2009
2010 static const struct elf_sh_plt_info *
2011 get_plt_info (bfd *abfd, bfd_boolean pic_p)
2012 {
2013 if (fdpic_object_p (abfd))
2014 {
2015 /* If any input file requires SH2A we can use a shorter PLT
2016 sequence. */
2017 if (sh_get_arch_from_bfd_mach (bfd_get_mach (abfd)) & arch_sh2a_base)
2018 return &fdpic_sh2a_plts[!bfd_big_endian (abfd)];
2019 else
2020 return &fdpic_sh_plts[!bfd_big_endian (abfd)];
2021 }
2022 if (vxworks_object_p (abfd))
2023 return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)];
2024 return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
2025 }
2026
2027 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2028 VALUE is the field's value and CODE_P is true if VALUE refers to code,
2029 not data. */
2030
2031 inline static void
2032 install_plt_field (bfd *output_bfd, bfd_boolean code_p ATTRIBUTE_UNUSED,
2033 unsigned long value, bfd_byte *addr)
2034 {
2035 bfd_put_32 (output_bfd, value, addr);
2036 }
2037
2038 /* The number of PLT entries which can use a shorter PLT, if any.
2039 Currently always 64K, since only SH-2A FDPIC uses this; a
2040 20-bit movi20 can address that many function descriptors below
2041 _GLOBAL_OFFSET_TABLE_. */
2042 #define MAX_SHORT_PLT 65536
2043
2044 /* Return the index of the PLT entry at byte offset OFFSET. */
2045
2046 static bfd_vma
2047 get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset)
2048 {
2049 bfd_vma plt_index = 0;
2050
2051 offset -= info->plt0_entry_size;
2052 if (info->short_plt != NULL)
2053 {
2054 if (offset > MAX_SHORT_PLT * info->short_plt->symbol_entry_size)
2055 {
2056 plt_index = MAX_SHORT_PLT;
2057 offset -= MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2058 }
2059 else
2060 info = info->short_plt;
2061 }
2062 return plt_index + offset / info->symbol_entry_size;
2063 }
2064
2065 /* Do the inverse operation. */
2066
2067 static bfd_vma
2068 get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma plt_index)
2069 {
2070 bfd_vma offset = 0;
2071
2072 if (info->short_plt != NULL)
2073 {
2074 if (plt_index > MAX_SHORT_PLT)
2075 {
2076 offset = MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2077 plt_index -= MAX_SHORT_PLT;
2078 }
2079 else
2080 info = info->short_plt;
2081 }
2082 return (offset + info->plt0_entry_size
2083 + (plt_index * info->symbol_entry_size));
2084 }
2085
2086 union gotref
2087 {
2088 bfd_signed_vma refcount;
2089 bfd_vma offset;
2090 };
2091
2092 /* sh ELF linker hash entry. */
2093
2094 struct elf_sh_link_hash_entry
2095 {
2096 struct elf_link_hash_entry root;
2097
2098 bfd_signed_vma gotplt_refcount;
2099
2100 /* A local function descriptor, for FDPIC. The refcount counts
2101 R_SH_FUNCDESC, R_SH_GOTOFFFUNCDESC, and R_SH_GOTOFFFUNCDESC20
2102 relocations; the PLT and GOT entry are accounted
2103 for separately. After adjust_dynamic_symbol, the offset is
2104 MINUS_ONE if there is no local descriptor (dynamic linker
2105 managed and no PLT entry, or undefined weak non-dynamic).
2106 During check_relocs we do not yet know whether the local
2107 descriptor will be canonical. */
2108 union gotref funcdesc;
2109
2110 /* How many of the above refcounted relocations were R_SH_FUNCDESC,
2111 and thus require fixups or relocations. */
2112 bfd_signed_vma abs_funcdesc_refcount;
2113
2114 enum got_type {
2115 GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE, GOT_FUNCDESC
2116 } got_type;
2117 };
2118
2119 #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2120
2121 struct sh_elf_obj_tdata
2122 {
2123 struct elf_obj_tdata root;
2124
2125 /* got_type for each local got entry. */
2126 char *local_got_type;
2127
2128 /* Function descriptor refcount and offset for each local symbol. */
2129 union gotref *local_funcdesc;
2130 };
2131
2132 #define sh_elf_tdata(abfd) \
2133 ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2134
2135 #define sh_elf_local_got_type(abfd) \
2136 (sh_elf_tdata (abfd)->local_got_type)
2137
2138 #define sh_elf_local_funcdesc(abfd) \
2139 (sh_elf_tdata (abfd)->local_funcdesc)
2140
2141 #define is_sh_elf(bfd) \
2142 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2143 && elf_tdata (bfd) != NULL \
2144 && elf_object_id (bfd) == SH_ELF_DATA)
2145
2146 /* Override the generic function because we need to store sh_elf_obj_tdata
2147 as the specific tdata. */
2148
2149 static bfd_boolean
2150 sh_elf_mkobject (bfd *abfd)
2151 {
2152 return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata),
2153 SH_ELF_DATA);
2154 }
2155
2156 /* sh ELF linker hash table. */
2157
2158 struct elf_sh_link_hash_table
2159 {
2160 struct elf_link_hash_table root;
2161
2162 /* Short-cuts to get to dynamic linker sections. */
2163 asection *sfuncdesc;
2164 asection *srelfuncdesc;
2165 asection *srofixup;
2166
2167 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2168 asection *srelplt2;
2169
2170 /* A counter or offset to track a TLS got entry. */
2171 union
2172 {
2173 bfd_signed_vma refcount;
2174 bfd_vma offset;
2175 } tls_ldm_got;
2176
2177 /* The type of PLT to use. */
2178 const struct elf_sh_plt_info *plt_info;
2179
2180 /* True if the target system uses FDPIC. */
2181 bfd_boolean fdpic_p;
2182 };
2183
2184 /* Traverse an sh ELF linker hash table. */
2185
2186 #define sh_elf_link_hash_traverse(table, func, info) \
2187 (elf_link_hash_traverse \
2188 (&(table)->root, \
2189 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2190 (info)))
2191
2192 /* Get the sh ELF linker hash table from a link_info structure. */
2193
2194 #define sh_elf_hash_table(p) \
2195 ((is_elf_hash_table ((p)->hash) \
2196 && elf_hash_table_id (elf_hash_table (p)) == SH_ELF_DATA) \
2197 ? (struct elf_sh_link_hash_table *) (p)->hash : NULL)
2198
2199 /* Create an entry in an sh ELF linker hash table. */
2200
2201 static struct bfd_hash_entry *
2202 sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2203 struct bfd_hash_table *table,
2204 const char *string)
2205 {
2206 struct elf_sh_link_hash_entry *ret =
2207 (struct elf_sh_link_hash_entry *) entry;
2208
2209 /* Allocate the structure if it has not already been allocated by a
2210 subclass. */
2211 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2212 ret = ((struct elf_sh_link_hash_entry *)
2213 bfd_hash_allocate (table,
2214 sizeof (struct elf_sh_link_hash_entry)));
2215 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2216 return (struct bfd_hash_entry *) ret;
2217
2218 /* Call the allocation method of the superclass. */
2219 ret = ((struct elf_sh_link_hash_entry *)
2220 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2221 table, string));
2222 if (ret != (struct elf_sh_link_hash_entry *) NULL)
2223 {
2224 ret->gotplt_refcount = 0;
2225 ret->funcdesc.refcount = 0;
2226 ret->abs_funcdesc_refcount = 0;
2227 ret->got_type = GOT_UNKNOWN;
2228 }
2229
2230 return (struct bfd_hash_entry *) ret;
2231 }
2232
2233 /* Create an sh ELF linker hash table. */
2234
2235 static struct bfd_link_hash_table *
2236 sh_elf_link_hash_table_create (bfd *abfd)
2237 {
2238 struct elf_sh_link_hash_table *ret;
2239 size_t amt = sizeof (struct elf_sh_link_hash_table);
2240
2241 ret = (struct elf_sh_link_hash_table *) bfd_zmalloc (amt);
2242 if (ret == (struct elf_sh_link_hash_table *) NULL)
2243 return NULL;
2244
2245 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2246 sh_elf_link_hash_newfunc,
2247 sizeof (struct elf_sh_link_hash_entry),
2248 SH_ELF_DATA))
2249 {
2250 free (ret);
2251 return NULL;
2252 }
2253
2254 if (fdpic_object_p (abfd))
2255 {
2256 ret->root.dt_pltgot_required = TRUE;
2257 ret->fdpic_p = TRUE;
2258 }
2259
2260 return &ret->root.root;
2261 }
2262
2263 static bfd_boolean
2264 sh_elf_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2265 struct bfd_link_info *info, asection *p)
2266 {
2267 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
2268
2269 /* Non-FDPIC binaries do not need dynamic symbols for sections. */
2270 if (!htab->fdpic_p)
2271 return TRUE;
2272
2273 /* We need dynamic symbols for every section, since segments can
2274 relocate independently. */
2275 switch (elf_section_data (p)->this_hdr.sh_type)
2276 {
2277 case SHT_PROGBITS:
2278 case SHT_NOBITS:
2279 /* If sh_type is yet undecided, assume it could be
2280 SHT_PROGBITS/SHT_NOBITS. */
2281 case SHT_NULL:
2282 return FALSE;
2283
2284 /* There shouldn't be section relative relocations
2285 against any other section. */
2286 default:
2287 return TRUE;
2288 }
2289 }
2290
2291 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2292 shortcuts to them in our hash table. */
2293
2294 static bfd_boolean
2295 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2296 {
2297 struct elf_sh_link_hash_table *htab;
2298
2299 if (! _bfd_elf_create_got_section (dynobj, info))
2300 return FALSE;
2301
2302 htab = sh_elf_hash_table (info);
2303 if (htab == NULL)
2304 return FALSE;
2305
2306 htab->sfuncdesc = bfd_make_section_anyway_with_flags (dynobj, ".got.funcdesc",
2307 (SEC_ALLOC | SEC_LOAD
2308 | SEC_HAS_CONTENTS
2309 | SEC_IN_MEMORY
2310 | SEC_LINKER_CREATED));
2311 if (htab->sfuncdesc == NULL
2312 || !bfd_set_section_alignment (htab->sfuncdesc, 2))
2313 return FALSE;
2314
2315 htab->srelfuncdesc = bfd_make_section_anyway_with_flags (dynobj,
2316 ".rela.got.funcdesc",
2317 (SEC_ALLOC | SEC_LOAD
2318 | SEC_HAS_CONTENTS
2319 | SEC_IN_MEMORY
2320 | SEC_LINKER_CREATED
2321 | SEC_READONLY));
2322 if (htab->srelfuncdesc == NULL
2323 || !bfd_set_section_alignment (htab->srelfuncdesc, 2))
2324 return FALSE;
2325
2326 /* Also create .rofixup. */
2327 htab->srofixup = bfd_make_section_anyway_with_flags (dynobj, ".rofixup",
2328 (SEC_ALLOC | SEC_LOAD
2329 | SEC_HAS_CONTENTS
2330 | SEC_IN_MEMORY
2331 | SEC_LINKER_CREATED
2332 | SEC_READONLY));
2333 if (htab->srofixup == NULL
2334 || !bfd_set_section_alignment (htab->srofixup, 2))
2335 return FALSE;
2336
2337 return TRUE;
2338 }
2339
2340 /* Create dynamic sections when linking against a dynamic object. */
2341
2342 static bfd_boolean
2343 sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2344 {
2345 struct elf_sh_link_hash_table *htab;
2346 flagword flags, pltflags;
2347 asection *s;
2348 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2349 int ptralign = 0;
2350
2351 switch (bed->s->arch_size)
2352 {
2353 case 32:
2354 ptralign = 2;
2355 break;
2356
2357 case 64:
2358 ptralign = 3;
2359 break;
2360
2361 default:
2362 bfd_set_error (bfd_error_bad_value);
2363 return FALSE;
2364 }
2365
2366 htab = sh_elf_hash_table (info);
2367 if (htab == NULL)
2368 return FALSE;
2369
2370 if (htab->root.dynamic_sections_created)
2371 return TRUE;
2372
2373 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2374 .rel[a].bss sections. */
2375
2376 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2377 | SEC_LINKER_CREATED);
2378
2379 pltflags = flags;
2380 pltflags |= SEC_CODE;
2381 if (bed->plt_not_loaded)
2382 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2383 if (bed->plt_readonly)
2384 pltflags |= SEC_READONLY;
2385
2386 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
2387 htab->root.splt = s;
2388 if (s == NULL
2389 || !bfd_set_section_alignment (s, bed->plt_alignment))
2390 return FALSE;
2391
2392 if (bed->want_plt_sym)
2393 {
2394 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2395 .plt section. */
2396 struct elf_link_hash_entry *h;
2397 struct bfd_link_hash_entry *bh = NULL;
2398
2399 if (! (_bfd_generic_link_add_one_symbol
2400 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2401 (bfd_vma) 0, (const char *) NULL, FALSE,
2402 get_elf_backend_data (abfd)->collect, &bh)))
2403 return FALSE;
2404
2405 h = (struct elf_link_hash_entry *) bh;
2406 h->def_regular = 1;
2407 h->type = STT_OBJECT;
2408 htab->root.hplt = h;
2409
2410 if (bfd_link_pic (info)
2411 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2412 return FALSE;
2413 }
2414
2415 s = bfd_make_section_anyway_with_flags (abfd,
2416 bed->default_use_rela_p
2417 ? ".rela.plt" : ".rel.plt",
2418 flags | SEC_READONLY);
2419 htab->root.srelplt = s;
2420 if (s == NULL
2421 || !bfd_set_section_alignment (s, ptralign))
2422 return FALSE;
2423
2424 if (htab->root.sgot == NULL
2425 && !create_got_section (abfd, info))
2426 return FALSE;
2427
2428 if (bed->want_dynbss)
2429 {
2430 /* The .dynbss section is a place to put symbols which are defined
2431 by dynamic objects, are referenced by regular objects, and are
2432 not functions. We must allocate space for them in the process
2433 image and use a R_*_COPY reloc to tell the dynamic linker to
2434 initialize them at run time. The linker script puts the .dynbss
2435 section into the .bss section of the final image. */
2436 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
2437 SEC_ALLOC | SEC_LINKER_CREATED);
2438 htab->root.sdynbss = s;
2439 if (s == NULL)
2440 return FALSE;
2441
2442 /* The .rel[a].bss section holds copy relocs. This section is not
2443 normally needed. We need to create it here, though, so that the
2444 linker will map it to an output section. We can't just create it
2445 only if we need it, because we will not know whether we need it
2446 until we have seen all the input files, and the first time the
2447 main linker code calls BFD after examining all the input files
2448 (size_dynamic_sections) the input sections have already been
2449 mapped to the output sections. If the section turns out not to
2450 be needed, we can discard it later. We will never need this
2451 section when generating a shared object, since they do not use
2452 copy relocs. */
2453 if (! bfd_link_pic (info))
2454 {
2455 s = bfd_make_section_anyway_with_flags (abfd,
2456 (bed->default_use_rela_p
2457 ? ".rela.bss" : ".rel.bss"),
2458 flags | SEC_READONLY);
2459 htab->root.srelbss = s;
2460 if (s == NULL
2461 || !bfd_set_section_alignment (s, ptralign))
2462 return FALSE;
2463 }
2464 }
2465
2466 if (htab->root.target_os == is_vxworks)
2467 {
2468 if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2469 return FALSE;
2470 }
2471
2472 return TRUE;
2473 }
2474 \f
2475 /* Adjust a symbol defined by a dynamic object and referenced by a
2476 regular object. The current definition is in some section of the
2477 dynamic object, but we're not including those sections. We have to
2478 change the definition to something the rest of the link can
2479 understand. */
2480
2481 static bfd_boolean
2482 sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2483 struct elf_link_hash_entry *h)
2484 {
2485 struct elf_sh_link_hash_table *htab;
2486 asection *s;
2487
2488 htab = sh_elf_hash_table (info);
2489 if (htab == NULL)
2490 return FALSE;
2491
2492 /* Make sure we know what is going on here. */
2493 BFD_ASSERT (htab->root.dynobj != NULL
2494 && (h->needs_plt
2495 || h->is_weakalias
2496 || (h->def_dynamic
2497 && h->ref_regular
2498 && !h->def_regular)));
2499
2500 /* If this is a function, put it in the procedure linkage table. We
2501 will fill in the contents of the procedure linkage table later,
2502 when we know the address of the .got section. */
2503 if (h->type == STT_FUNC
2504 || h->needs_plt)
2505 {
2506 if (h->plt.refcount <= 0
2507 || SYMBOL_CALLS_LOCAL (info, h)
2508 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2509 && h->root.type == bfd_link_hash_undefweak))
2510 {
2511 /* This case can occur if we saw a PLT reloc in an input
2512 file, but the symbol was never referred to by a dynamic
2513 object. In such a case, we don't actually need to build
2514 a procedure linkage table, and we can just do a REL32
2515 reloc instead. */
2516 h->plt.offset = (bfd_vma) -1;
2517 h->needs_plt = 0;
2518 }
2519
2520 return TRUE;
2521 }
2522 else
2523 h->plt.offset = (bfd_vma) -1;
2524
2525 /* If this is a weak symbol, and there is a real definition, the
2526 processor independent code will have arranged for us to see the
2527 real definition first, and we can just use the same value. */
2528 if (h->is_weakalias)
2529 {
2530 struct elf_link_hash_entry *def = weakdef (h);
2531 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2532 h->root.u.def.section = def->root.u.def.section;
2533 h->root.u.def.value = def->root.u.def.value;
2534 if (info->nocopyreloc)
2535 h->non_got_ref = def->non_got_ref;
2536 return TRUE;
2537 }
2538
2539 /* This is a reference to a symbol defined by a dynamic object which
2540 is not a function. */
2541
2542 /* If we are creating a shared library, we must presume that the
2543 only references to the symbol are via the global offset table.
2544 For such cases we need not do anything here; the relocations will
2545 be handled correctly by relocate_section. */
2546 if (bfd_link_pic (info))
2547 return TRUE;
2548
2549 /* If there are no references to this symbol that do not use the
2550 GOT, we don't need to generate a copy reloc. */
2551 if (!h->non_got_ref)
2552 return TRUE;
2553
2554 /* If -z nocopyreloc was given, we won't generate them either. */
2555 if (0 && info->nocopyreloc)
2556 {
2557 h->non_got_ref = 0;
2558 return TRUE;
2559 }
2560
2561 /* If we don't find any dynamic relocs in read-only sections, then
2562 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2563 if (0 && !_bfd_elf_readonly_dynrelocs (h))
2564 {
2565 h->non_got_ref = 0;
2566 return TRUE;
2567 }
2568
2569 /* We must allocate the symbol in our .dynbss section, which will
2570 become part of the .bss section of the executable. There will be
2571 an entry for this symbol in the .dynsym section. The dynamic
2572 object will contain position independent code, so all references
2573 from the dynamic object to this symbol will go through the global
2574 offset table. The dynamic linker will use the .dynsym entry to
2575 determine the address it must put in the global offset table, so
2576 both the dynamic object and the regular object will refer to the
2577 same memory location for the variable. */
2578
2579 s = htab->root.sdynbss;
2580 BFD_ASSERT (s != NULL);
2581
2582 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2583 copy the initial value out of the dynamic object and into the
2584 runtime process image. We need to remember the offset into the
2585 .rela.bss section we are going to use. */
2586 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2587 {
2588 asection *srel;
2589
2590 srel = htab->root.srelbss;
2591 BFD_ASSERT (srel != NULL);
2592 srel->size += sizeof (Elf32_External_Rela);
2593 h->needs_copy = 1;
2594 }
2595
2596 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2597 }
2598
2599 /* Allocate space in .plt, .got and associated reloc sections for
2600 dynamic relocs. */
2601
2602 static bfd_boolean
2603 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2604 {
2605 struct bfd_link_info *info;
2606 struct elf_sh_link_hash_table *htab;
2607 struct elf_sh_link_hash_entry *eh;
2608 struct elf_dyn_relocs *p;
2609
2610 if (h->root.type == bfd_link_hash_indirect)
2611 return TRUE;
2612
2613 info = (struct bfd_link_info *) inf;
2614 htab = sh_elf_hash_table (info);
2615 if (htab == NULL)
2616 return FALSE;
2617
2618 eh = (struct elf_sh_link_hash_entry *) h;
2619 if ((h->got.refcount > 0
2620 || h->forced_local)
2621 && eh->gotplt_refcount > 0)
2622 {
2623 /* The symbol has been forced local, or we have some direct got refs,
2624 so treat all the gotplt refs as got refs. */
2625 h->got.refcount += eh->gotplt_refcount;
2626 if (h->plt.refcount >= eh->gotplt_refcount)
2627 h->plt.refcount -= eh->gotplt_refcount;
2628 }
2629
2630 if (htab->root.dynamic_sections_created
2631 && h->plt.refcount > 0
2632 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2633 || h->root.type != bfd_link_hash_undefweak))
2634 {
2635 /* Make sure this symbol is output as a dynamic symbol.
2636 Undefined weak syms won't yet be marked as dynamic. */
2637 if (h->dynindx == -1
2638 && !h->forced_local)
2639 {
2640 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2641 return FALSE;
2642 }
2643
2644 if (bfd_link_pic (info)
2645 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2646 {
2647 asection *s = htab->root.splt;
2648 const struct elf_sh_plt_info *plt_info;
2649
2650 /* If this is the first .plt entry, make room for the special
2651 first entry. */
2652 if (s->size == 0)
2653 s->size += htab->plt_info->plt0_entry_size;
2654
2655 h->plt.offset = s->size;
2656
2657 /* If this symbol is not defined in a regular file, and we are
2658 not generating a shared library, then set the symbol to this
2659 location in the .plt. This is required to make function
2660 pointers compare as equal between the normal executable and
2661 the shared library. Skip this for FDPIC, since the
2662 function's address will be the address of the canonical
2663 function descriptor. */
2664 if (!htab->fdpic_p && !bfd_link_pic (info) && !h->def_regular)
2665 {
2666 h->root.u.def.section = s;
2667 h->root.u.def.value = h->plt.offset;
2668 }
2669
2670 /* Make room for this entry. */
2671 plt_info = htab->plt_info;
2672 if (plt_info->short_plt != NULL
2673 && (get_plt_index (plt_info->short_plt, s->size) < MAX_SHORT_PLT))
2674 plt_info = plt_info->short_plt;
2675 s->size += plt_info->symbol_entry_size;
2676
2677 /* We also need to make an entry in the .got.plt section, which
2678 will be placed in the .got section by the linker script. */
2679 if (!htab->fdpic_p)
2680 htab->root.sgotplt->size += 4;
2681 else
2682 htab->root.sgotplt->size += 8;
2683
2684 /* We also need to make an entry in the .rel.plt section. */
2685 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
2686
2687 if (htab->root.target_os == is_vxworks && !bfd_link_pic (info))
2688 {
2689 /* VxWorks executables have a second set of relocations
2690 for each PLT entry. They go in a separate relocation
2691 section, which is processed by the kernel loader. */
2692
2693 /* There is a relocation for the initial PLT entry:
2694 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2695 if (h->plt.offset == htab->plt_info->plt0_entry_size)
2696 htab->srelplt2->size += sizeof (Elf32_External_Rela);
2697
2698 /* There are two extra relocations for each subsequent
2699 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2700 and an R_SH_DIR32 relocation for the PLT entry. */
2701 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2702 }
2703 }
2704 else
2705 {
2706 h->plt.offset = (bfd_vma) -1;
2707 h->needs_plt = 0;
2708 }
2709 }
2710 else
2711 {
2712 h->plt.offset = (bfd_vma) -1;
2713 h->needs_plt = 0;
2714 }
2715
2716 if (h->got.refcount > 0)
2717 {
2718 asection *s;
2719 bfd_boolean dyn;
2720 enum got_type got_type = sh_elf_hash_entry (h)->got_type;
2721
2722 /* Make sure this symbol is output as a dynamic symbol.
2723 Undefined weak syms won't yet be marked as dynamic. */
2724 if (h->dynindx == -1
2725 && !h->forced_local)
2726 {
2727 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2728 return FALSE;
2729 }
2730
2731 s = htab->root.sgot;
2732 h->got.offset = s->size;
2733 s->size += 4;
2734 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2735 if (got_type == GOT_TLS_GD)
2736 s->size += 4;
2737 dyn = htab->root.dynamic_sections_created;
2738 if (!dyn)
2739 {
2740 /* No dynamic relocations required. */
2741 if (htab->fdpic_p && !bfd_link_pic (info)
2742 && h->root.type != bfd_link_hash_undefweak
2743 && (got_type == GOT_NORMAL || got_type == GOT_FUNCDESC))
2744 htab->srofixup->size += 4;
2745 }
2746 /* No dynamic relocations required when IE->LE conversion happens. */
2747 else if (got_type == GOT_TLS_IE
2748 && !h->def_dynamic
2749 && !bfd_link_pic (info))
2750 ;
2751 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2752 R_SH_TLS_GD needs one if local symbol and two if global. */
2753 else if ((got_type == GOT_TLS_GD && h->dynindx == -1)
2754 || got_type == GOT_TLS_IE)
2755 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2756 else if (got_type == GOT_TLS_GD)
2757 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2758 else if (got_type == GOT_FUNCDESC)
2759 {
2760 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2761 htab->srofixup->size += 4;
2762 else
2763 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2764 }
2765 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2766 || h->root.type != bfd_link_hash_undefweak)
2767 && (bfd_link_pic (info)
2768 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2769 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2770 else if (htab->fdpic_p
2771 && !bfd_link_pic (info)
2772 && got_type == GOT_NORMAL
2773 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2774 || h->root.type != bfd_link_hash_undefweak))
2775 htab->srofixup->size += 4;
2776 }
2777 else
2778 h->got.offset = (bfd_vma) -1;
2779
2780 /* Allocate space for any dynamic relocations to function
2781 descriptors, canonical or otherwise. We need to relocate the
2782 reference unless it resolves to zero, which only happens for
2783 undefined weak symbols (either non-default visibility, or when
2784 static linking). Any GOT slot is accounted for elsewhere. */
2785 if (eh->abs_funcdesc_refcount > 0
2786 && (h->root.type != bfd_link_hash_undefweak
2787 || (htab->root.dynamic_sections_created
2788 && ! SYMBOL_CALLS_LOCAL (info, h))))
2789 {
2790 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2791 htab->srofixup->size += eh->abs_funcdesc_refcount * 4;
2792 else
2793 htab->root.srelgot->size
2794 += eh->abs_funcdesc_refcount * sizeof (Elf32_External_Rela);
2795 }
2796
2797 /* We must allocate a function descriptor if there are references to
2798 a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and
2799 the dynamic linker isn't going to allocate it. None of this
2800 applies if we already created one in .got.plt, but if the
2801 canonical function descriptor can be in this object, there
2802 won't be a PLT entry at all. */
2803 if ((eh->funcdesc.refcount > 0
2804 || (h->got.offset != MINUS_ONE && eh->got_type == GOT_FUNCDESC))
2805 && h->root.type != bfd_link_hash_undefweak
2806 && SYMBOL_FUNCDESC_LOCAL (info, h))
2807 {
2808 /* Make room for this function descriptor. */
2809 eh->funcdesc.offset = htab->sfuncdesc->size;
2810 htab->sfuncdesc->size += 8;
2811
2812 /* We will need a relocation or two fixups to initialize the
2813 function descriptor, so allocate those too. */
2814 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
2815 htab->srofixup->size += 8;
2816 else
2817 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
2818 }
2819
2820 if (h->dyn_relocs == NULL)
2821 return TRUE;
2822
2823 /* In the shared -Bsymbolic case, discard space allocated for
2824 dynamic pc-relative relocs against symbols which turn out to be
2825 defined in regular objects. For the normal shared case, discard
2826 space for pc-relative relocs that have become local due to symbol
2827 visibility changes. */
2828
2829 if (bfd_link_pic (info))
2830 {
2831 if (SYMBOL_CALLS_LOCAL (info, h))
2832 {
2833 struct elf_dyn_relocs **pp;
2834
2835 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2836 {
2837 p->count -= p->pc_count;
2838 p->pc_count = 0;
2839 if (p->count == 0)
2840 *pp = p->next;
2841 else
2842 pp = &p->next;
2843 }
2844 }
2845
2846 if (htab->root.target_os == is_vxworks)
2847 {
2848 struct elf_dyn_relocs **pp;
2849
2850 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2851 {
2852 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2853 *pp = p->next;
2854 else
2855 pp = &p->next;
2856 }
2857 }
2858
2859 /* Also discard relocs on undefined weak syms with non-default
2860 visibility. */
2861 if (h->dyn_relocs != NULL
2862 && h->root.type == bfd_link_hash_undefweak)
2863 {
2864 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2865 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2866 h->dyn_relocs = NULL;
2867
2868 /* Make sure undefined weak symbols are output as a dynamic
2869 symbol in PIEs. */
2870 else if (h->dynindx == -1
2871 && !h->forced_local)
2872 {
2873 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2874 return FALSE;
2875 }
2876 }
2877 }
2878 else
2879 {
2880 /* For the non-shared case, discard space for relocs against
2881 symbols which turn out to need copy relocs or are not
2882 dynamic. */
2883
2884 if (!h->non_got_ref
2885 && ((h->def_dynamic
2886 && !h->def_regular)
2887 || (htab->root.dynamic_sections_created
2888 && (h->root.type == bfd_link_hash_undefweak
2889 || h->root.type == bfd_link_hash_undefined))))
2890 {
2891 /* Make sure this symbol is output as a dynamic symbol.
2892 Undefined weak syms won't yet be marked as dynamic. */
2893 if (h->dynindx == -1
2894 && !h->forced_local)
2895 {
2896 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2897 return FALSE;
2898 }
2899
2900 /* If that succeeded, we know we'll be keeping all the
2901 relocs. */
2902 if (h->dynindx != -1)
2903 goto keep;
2904 }
2905
2906 h->dyn_relocs = NULL;
2907
2908 keep: ;
2909 }
2910
2911 /* Finally, allocate space. */
2912 for (p = h->dyn_relocs; p != NULL; p = p->next)
2913 {
2914 asection *sreloc = elf_section_data (p->sec)->sreloc;
2915 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2916
2917 /* If we need relocations, we do not need fixups. */
2918 if (htab->fdpic_p && !bfd_link_pic (info))
2919 htab->srofixup->size -= 4 * (p->count - p->pc_count);
2920 }
2921
2922 return TRUE;
2923 }
2924
2925 /* This function is called after all the input files have been read,
2926 and the input sections have been assigned to output sections.
2927 It's a convenient place to determine the PLT style. */
2928
2929 static bfd_boolean
2930 sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2931 {
2932 sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd,
2933 bfd_link_pic (info));
2934
2935 if (sh_elf_hash_table (info)->fdpic_p && !bfd_link_relocatable (info)
2936 && !bfd_elf_stack_segment_size (output_bfd, info,
2937 "__stacksize", DEFAULT_STACK_SIZE))
2938 return FALSE;
2939 return TRUE;
2940 }
2941
2942 /* Set the sizes of the dynamic sections. */
2943
2944 static bfd_boolean
2945 sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2946 struct bfd_link_info *info)
2947 {
2948 struct elf_sh_link_hash_table *htab;
2949 bfd *dynobj;
2950 asection *s;
2951 bfd_boolean relocs;
2952 bfd *ibfd;
2953
2954 htab = sh_elf_hash_table (info);
2955 if (htab == NULL)
2956 return FALSE;
2957
2958 dynobj = htab->root.dynobj;
2959 BFD_ASSERT (dynobj != NULL);
2960
2961 if (htab->root.dynamic_sections_created)
2962 {
2963 /* Set the contents of the .interp section to the interpreter. */
2964 if (bfd_link_executable (info) && !info->nointerp)
2965 {
2966 s = bfd_get_linker_section (dynobj, ".interp");
2967 BFD_ASSERT (s != NULL);
2968 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2969 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2970 }
2971 }
2972
2973 /* Set up .got offsets for local syms, and space for local dynamic
2974 relocs. */
2975 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2976 {
2977 bfd_signed_vma *local_got;
2978 bfd_signed_vma *end_local_got;
2979 union gotref *local_funcdesc, *end_local_funcdesc;
2980 char *local_got_type;
2981 bfd_size_type locsymcount;
2982 Elf_Internal_Shdr *symtab_hdr;
2983 asection *srel;
2984
2985 if (! is_sh_elf (ibfd))
2986 continue;
2987
2988 for (s = ibfd->sections; s != NULL; s = s->next)
2989 {
2990 struct elf_dyn_relocs *p;
2991
2992 for (p = ((struct elf_dyn_relocs *)
2993 elf_section_data (s)->local_dynrel);
2994 p != NULL;
2995 p = p->next)
2996 {
2997 if (! bfd_is_abs_section (p->sec)
2998 && bfd_is_abs_section (p->sec->output_section))
2999 {
3000 /* Input section has been discarded, either because
3001 it is a copy of a linkonce section or due to
3002 linker script /DISCARD/, so we'll be discarding
3003 the relocs too. */
3004 }
3005 else if (htab->root.target_os == is_vxworks
3006 && strcmp (p->sec->output_section->name,
3007 ".tls_vars") == 0)
3008 {
3009 /* Relocations in vxworks .tls_vars sections are
3010 handled specially by the loader. */
3011 }
3012 else if (p->count != 0)
3013 {
3014 srel = elf_section_data (p->sec)->sreloc;
3015 srel->size += p->count * sizeof (Elf32_External_Rela);
3016 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3017 {
3018 info->flags |= DF_TEXTREL;
3019 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
3020 p->sec->owner, p->sec);
3021 }
3022
3023 /* If we need relocations, we do not need fixups. */
3024 if (htab->fdpic_p && !bfd_link_pic (info))
3025 htab->srofixup->size -= 4 * (p->count - p->pc_count);
3026 }
3027 }
3028 }
3029
3030 symtab_hdr = &elf_symtab_hdr (ibfd);
3031 locsymcount = symtab_hdr->sh_info;
3032 s = htab->root.sgot;
3033 srel = htab->root.srelgot;
3034
3035 local_got = elf_local_got_refcounts (ibfd);
3036 if (local_got)
3037 {
3038 end_local_got = local_got + locsymcount;
3039 local_got_type = sh_elf_local_got_type (ibfd);
3040 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3041 for (; local_got < end_local_got; ++local_got)
3042 {
3043 if (*local_got > 0)
3044 {
3045 *local_got = s->size;
3046 s->size += 4;
3047 if (*local_got_type == GOT_TLS_GD)
3048 s->size += 4;
3049 if (bfd_link_pic (info))
3050 srel->size += sizeof (Elf32_External_Rela);
3051 else
3052 htab->srofixup->size += 4;
3053
3054 if (*local_got_type == GOT_FUNCDESC)
3055 {
3056 if (local_funcdesc == NULL)
3057 {
3058 bfd_size_type size;
3059
3060 size = locsymcount * sizeof (union gotref);
3061 local_funcdesc = (union gotref *) bfd_zalloc (ibfd,
3062 size);
3063 if (local_funcdesc == NULL)
3064 return FALSE;
3065 sh_elf_local_funcdesc (ibfd) = local_funcdesc;
3066 local_funcdesc += (local_got
3067 - elf_local_got_refcounts (ibfd));
3068 }
3069 local_funcdesc->refcount++;
3070 ++local_funcdesc;
3071 }
3072 }
3073 else
3074 *local_got = (bfd_vma) -1;
3075 ++local_got_type;
3076 }
3077 }
3078
3079 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3080 if (local_funcdesc)
3081 {
3082 end_local_funcdesc = local_funcdesc + locsymcount;
3083
3084 for (; local_funcdesc < end_local_funcdesc; ++local_funcdesc)
3085 {
3086 if (local_funcdesc->refcount > 0)
3087 {
3088 local_funcdesc->offset = htab->sfuncdesc->size;
3089 htab->sfuncdesc->size += 8;
3090 if (!bfd_link_pic (info))
3091 htab->srofixup->size += 8;
3092 else
3093 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
3094 }
3095 else
3096 local_funcdesc->offset = MINUS_ONE;
3097 }
3098 }
3099
3100 }
3101
3102 if (htab->tls_ldm_got.refcount > 0)
3103 {
3104 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3105 relocs. */
3106 htab->tls_ldm_got.offset = htab->root.sgot->size;
3107 htab->root.sgot->size += 8;
3108 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
3109 }
3110 else
3111 htab->tls_ldm_got.offset = -1;
3112
3113 /* Only the reserved entries should be present. For FDPIC, they go at
3114 the end of .got.plt. */
3115 if (htab->fdpic_p)
3116 {
3117 BFD_ASSERT (htab->root.sgotplt && htab->root.sgotplt->size == 12);
3118 htab->root.sgotplt->size = 0;
3119 }
3120
3121 /* Allocate global sym .plt and .got entries, and space for global
3122 sym dynamic relocs. */
3123 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3124
3125 /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
3126 end of the FDPIC .got.plt. */
3127 if (htab->fdpic_p)
3128 {
3129 htab->root.hgot->root.u.def.value = htab->root.sgotplt->size;
3130 htab->root.sgotplt->size += 12;
3131 }
3132
3133 /* At the very end of the .rofixup section is a pointer to the GOT. */
3134 if (htab->fdpic_p && htab->srofixup != NULL)
3135 htab->srofixup->size += 4;
3136
3137 /* We now have determined the sizes of the various dynamic sections.
3138 Allocate memory for them. */
3139 relocs = FALSE;
3140 for (s = dynobj->sections; s != NULL; s = s->next)
3141 {
3142 if ((s->flags & SEC_LINKER_CREATED) == 0)
3143 continue;
3144
3145 if (s == htab->root.splt
3146 || s == htab->root.sgot
3147 || s == htab->root.sgotplt
3148 || s == htab->sfuncdesc
3149 || s == htab->srofixup
3150 || s == htab->root.sdynbss)
3151 {
3152 /* Strip this section if we don't need it; see the
3153 comment below. */
3154 }
3155 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
3156 {
3157 if (s->size != 0 && s != htab->root.srelplt && s != htab->srelplt2)
3158 relocs = TRUE;
3159
3160 /* We use the reloc_count field as a counter if we need
3161 to copy relocs into the output file. */
3162 s->reloc_count = 0;
3163 }
3164 else
3165 {
3166 /* It's not one of our sections, so don't allocate space. */
3167 continue;
3168 }
3169
3170 if (s->size == 0)
3171 {
3172 /* If we don't need this section, strip it from the
3173 output file. This is mostly to handle .rela.bss and
3174 .rela.plt. We must create both sections in
3175 create_dynamic_sections, because they must be created
3176 before the linker maps input sections to output
3177 sections. The linker does that before
3178 adjust_dynamic_symbol is called, and it is that
3179 function which decides whether anything needs to go
3180 into these sections. */
3181
3182 s->flags |= SEC_EXCLUDE;
3183 continue;
3184 }
3185
3186 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3187 continue;
3188
3189 /* Allocate memory for the section contents. We use bfd_zalloc
3190 here in case unused entries are not reclaimed before the
3191 section's contents are written out. This should not happen,
3192 but this way if it does, we get a R_SH_NONE reloc instead
3193 of garbage. */
3194 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3195 if (s->contents == NULL)
3196 return FALSE;
3197 }
3198
3199 return _bfd_elf_maybe_vxworks_add_dynamic_tags (output_bfd, info,
3200 relocs);
3201 }
3202 \f
3203 /* Add a dynamic relocation to the SRELOC section. */
3204
3205 inline static bfd_vma
3206 sh_elf_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
3207 int reloc_type, long dynindx, bfd_vma addend)
3208 {
3209 Elf_Internal_Rela outrel;
3210 bfd_vma reloc_offset;
3211
3212 outrel.r_offset = offset;
3213 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
3214 outrel.r_addend = addend;
3215
3216 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rela);
3217 BFD_ASSERT (reloc_offset < sreloc->size);
3218 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3219 sreloc->contents + reloc_offset);
3220 sreloc->reloc_count++;
3221
3222 return reloc_offset;
3223 }
3224
3225 /* Add an FDPIC read-only fixup. */
3226
3227 inline static void
3228 sh_elf_add_rofixup (bfd *output_bfd, asection *srofixup, bfd_vma offset)
3229 {
3230 bfd_vma fixup_offset;
3231
3232 fixup_offset = srofixup->reloc_count++ * 4;
3233 BFD_ASSERT (fixup_offset < srofixup->size);
3234 bfd_put_32 (output_bfd, offset, srofixup->contents + fixup_offset);
3235 }
3236
3237 /* Return the offset of the generated .got section from the
3238 _GLOBAL_OFFSET_TABLE_ symbol. */
3239
3240 static bfd_signed_vma
3241 sh_elf_got_offset (struct elf_sh_link_hash_table *htab)
3242 {
3243 return (htab->root.sgot->output_offset - htab->root.sgotplt->output_offset
3244 - htab->root.hgot->root.u.def.value);
3245 }
3246
3247 /* Find the segment number in which OSEC, and output section, is
3248 located. */
3249
3250 static unsigned
3251 sh_elf_osec_to_segment (bfd *output_bfd, asection *osec)
3252 {
3253 Elf_Internal_Phdr *p = NULL;
3254
3255 if (output_bfd->xvec->flavour == bfd_target_elf_flavour
3256 /* PR ld/17110: Do not look for output segments in an input bfd. */
3257 && output_bfd->direction != read_direction)
3258 p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
3259
3260 /* FIXME: Nothing ever says what this index is relative to. The kernel
3261 supplies data in terms of the number of load segments but this is
3262 a phdr index and the first phdr may not be a load segment. */
3263 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
3264 }
3265
3266 static bfd_boolean
3267 sh_elf_osec_readonly_p (bfd *output_bfd, asection *osec)
3268 {
3269 unsigned seg = sh_elf_osec_to_segment (output_bfd, osec);
3270
3271 return (seg != (unsigned) -1
3272 && ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W));
3273 }
3274
3275 /* Generate the initial contents of a local function descriptor, along
3276 with any relocations or fixups required. */
3277 static bfd_boolean
3278 sh_elf_initialize_funcdesc (bfd *output_bfd,
3279 struct bfd_link_info *info,
3280 struct elf_link_hash_entry *h,
3281 bfd_vma offset,
3282 asection *section,
3283 bfd_vma value)
3284 {
3285 struct elf_sh_link_hash_table *htab;
3286 int dynindx;
3287 bfd_vma addr, seg;
3288
3289 htab = sh_elf_hash_table (info);
3290
3291 /* FIXME: The ABI says that the offset to the function goes in the
3292 descriptor, along with the segment index. We're RELA, so it could
3293 go in the reloc instead... */
3294
3295 if (h != NULL && SYMBOL_CALLS_LOCAL (info, h))
3296 {
3297 section = h->root.u.def.section;
3298 value = h->root.u.def.value;
3299 }
3300
3301 if (h == NULL || SYMBOL_CALLS_LOCAL (info, h))
3302 {
3303 dynindx = elf_section_data (section->output_section)->dynindx;
3304 addr = value + section->output_offset;
3305 seg = sh_elf_osec_to_segment (output_bfd, section->output_section);
3306 }
3307 else
3308 {
3309 BFD_ASSERT (h->dynindx != -1);
3310 dynindx = h->dynindx;
3311 addr = seg = 0;
3312 }
3313
3314 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
3315 {
3316 if (h == NULL || h->root.type != bfd_link_hash_undefweak)
3317 {
3318 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3319 offset
3320 + htab->sfuncdesc->output_section->vma
3321 + htab->sfuncdesc->output_offset);
3322 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3323 offset + 4
3324 + htab->sfuncdesc->output_section->vma
3325 + htab->sfuncdesc->output_offset);
3326 }
3327
3328 /* There are no dynamic relocations so fill in the final
3329 address and gp value (barring fixups). */
3330 addr += section->output_section->vma;
3331 seg = htab->root.hgot->root.u.def.value
3332 + htab->root.hgot->root.u.def.section->output_section->vma
3333 + htab->root.hgot->root.u.def.section->output_offset;
3334 }
3335 else
3336 sh_elf_add_dyn_reloc (output_bfd, htab->srelfuncdesc,
3337 offset
3338 + htab->sfuncdesc->output_section->vma
3339 + htab->sfuncdesc->output_offset,
3340 R_SH_FUNCDESC_VALUE, dynindx, 0);
3341
3342 bfd_put_32 (output_bfd, addr, htab->sfuncdesc->contents + offset);
3343 bfd_put_32 (output_bfd, seg, htab->sfuncdesc->contents + offset + 4);
3344
3345 return TRUE;
3346 }
3347
3348 /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
3349 VALUE is the field's value. Return bfd_reloc_ok if successful or an error
3350 otherwise. */
3351
3352 static bfd_reloc_status_type
3353 install_movi20_field (bfd *output_bfd, unsigned long relocation,
3354 bfd *input_bfd, asection *input_section,
3355 bfd_byte *contents, bfd_vma offset)
3356 {
3357 unsigned long cur_val;
3358 bfd_byte *addr;
3359 bfd_reloc_status_type r;
3360
3361 if (offset > bfd_get_section_limit (input_bfd, input_section))
3362 return bfd_reloc_outofrange;
3363
3364 r = bfd_check_overflow (complain_overflow_signed, 20, 0,
3365 bfd_arch_bits_per_address (input_bfd), relocation);
3366 if (r != bfd_reloc_ok)
3367 return r;
3368
3369 addr = contents + offset;
3370 cur_val = bfd_get_16 (output_bfd, addr);
3371 bfd_put_16 (output_bfd, cur_val | ((relocation & 0xf0000) >> 12), addr);
3372 bfd_put_16 (output_bfd, relocation & 0xffff, addr + 2);
3373
3374 return bfd_reloc_ok;
3375 }
3376
3377 /* Relocate an SH ELF section. */
3378
3379 static bfd_boolean
3380 sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3381 bfd *input_bfd, asection *input_section,
3382 bfd_byte *contents, Elf_Internal_Rela *relocs,
3383 Elf_Internal_Sym *local_syms,
3384 asection **local_sections)
3385 {
3386 struct elf_sh_link_hash_table *htab;
3387 Elf_Internal_Shdr *symtab_hdr;
3388 struct elf_link_hash_entry **sym_hashes;
3389 Elf_Internal_Rela *rel, *relend;
3390 bfd_vma *local_got_offsets;
3391 asection *sgot = NULL;
3392 asection *sgotplt = NULL;
3393 asection *splt = NULL;
3394 asection *sreloc = NULL;
3395 asection *srelgot = NULL;
3396 bfd_boolean is_vxworks_tls;
3397 unsigned isec_segment, got_segment, plt_segment, check_segment[2];
3398 bfd_boolean fdpic_p = FALSE;
3399
3400 if (!is_sh_elf (input_bfd))
3401 {
3402 bfd_set_error (bfd_error_wrong_format);
3403 return FALSE;
3404 }
3405
3406 htab = sh_elf_hash_table (info);
3407 if (htab != NULL)
3408 {
3409 sgot = htab->root.sgot;
3410 sgotplt = htab->root.sgotplt;
3411 srelgot = htab->root.srelgot;
3412 splt = htab->root.splt;
3413 fdpic_p = htab->fdpic_p;
3414 }
3415 symtab_hdr = &elf_symtab_hdr (input_bfd);
3416 sym_hashes = elf_sym_hashes (input_bfd);
3417 local_got_offsets = elf_local_got_offsets (input_bfd);
3418
3419 isec_segment = sh_elf_osec_to_segment (output_bfd,
3420 input_section->output_section);
3421 if (fdpic_p && sgot)
3422 got_segment = sh_elf_osec_to_segment (output_bfd,
3423 sgot->output_section);
3424 else
3425 got_segment = -1;
3426 if (fdpic_p && splt)
3427 plt_segment = sh_elf_osec_to_segment (output_bfd,
3428 splt->output_section);
3429 else
3430 plt_segment = -1;
3431
3432 /* We have to handle relocations in vxworks .tls_vars sections
3433 specially, because the dynamic loader is 'weird'. */
3434 is_vxworks_tls = (htab && htab->root.target_os == is_vxworks && bfd_link_pic (info)
3435 && !strcmp (input_section->output_section->name,
3436 ".tls_vars"));
3437
3438 rel = relocs;
3439 relend = relocs + input_section->reloc_count;
3440 for (; rel < relend; rel++)
3441 {
3442 int r_type;
3443 reloc_howto_type *howto;
3444 unsigned long r_symndx;
3445 Elf_Internal_Sym *sym;
3446 asection *sec;
3447 struct elf_link_hash_entry *h;
3448 bfd_vma relocation;
3449 bfd_vma addend = (bfd_vma) 0;
3450 bfd_reloc_status_type r;
3451 bfd_vma off;
3452 enum got_type got_type;
3453 const char *symname = NULL;
3454 bfd_boolean resolved_to_zero;
3455
3456 r_symndx = ELF32_R_SYM (rel->r_info);
3457
3458 r_type = ELF32_R_TYPE (rel->r_info);
3459
3460 /* Many of the relocs are only used for relaxing, and are
3461 handled entirely by the relaxation code. */
3462 if (r_type >= (int) R_SH_GNU_VTINHERIT
3463 && r_type <= (int) R_SH_LABEL)
3464 continue;
3465 if (r_type == (int) R_SH_NONE)
3466 continue;
3467
3468 if (r_type < 0
3469 || r_type >= R_SH_max
3470 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3471 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3472 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3473 && r_type <= (int) R_SH_LAST_INVALID_RELOC_2)
3474 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3475 && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3476 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3477 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3478 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3479 && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3480 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_6
3481 && r_type <= (int) R_SH_LAST_INVALID_RELOC_6))
3482 {
3483 bfd_set_error (bfd_error_bad_value);
3484 return FALSE;
3485 }
3486
3487 howto = get_howto_table (output_bfd) + r_type;
3488
3489 /* For relocs that aren't partial_inplace, we get the addend from
3490 the relocation. */
3491 if (! howto->partial_inplace)
3492 addend = rel->r_addend;
3493
3494 resolved_to_zero = FALSE;
3495 h = NULL;
3496 sym = NULL;
3497 sec = NULL;
3498 check_segment[0] = -1;
3499 check_segment[1] = -1;
3500 if (r_symndx < symtab_hdr->sh_info)
3501 {
3502 sym = local_syms + r_symndx;
3503 sec = local_sections[r_symndx];
3504
3505 symname = bfd_elf_string_from_elf_section
3506 (input_bfd, symtab_hdr->sh_link, sym->st_name);
3507 if (symname == NULL || *symname == '\0')
3508 symname = bfd_section_name (sec);
3509
3510 relocation = (sec->output_section->vma
3511 + sec->output_offset
3512 + sym->st_value);
3513
3514 if (sec != NULL && discarded_section (sec))
3515 /* Handled below. */
3516 ;
3517 else if (bfd_link_relocatable (info))
3518 {
3519 /* This is a relocatable link. We don't have to change
3520 anything, unless the reloc is against a section symbol,
3521 in which case we have to adjust according to where the
3522 section symbol winds up in the output section. */
3523 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3524 {
3525 if (! howto->partial_inplace)
3526 {
3527 /* For relocations with the addend in the
3528 relocation, we need just to update the addend.
3529 All real relocs are of type partial_inplace; this
3530 code is mostly for completeness. */
3531 rel->r_addend += sec->output_offset;
3532
3533 continue;
3534 }
3535
3536 /* Relocs of type partial_inplace need to pick up the
3537 contents in the contents and add the offset resulting
3538 from the changed location of the section symbol.
3539 Using _bfd_final_link_relocate (e.g. goto
3540 final_link_relocate) here would be wrong, because
3541 relocations marked pc_relative would get the current
3542 location subtracted, and we must only do that at the
3543 final link. */
3544 r = _bfd_relocate_contents (howto, input_bfd,
3545 sec->output_offset
3546 + sym->st_value,
3547 contents + rel->r_offset);
3548 goto relocation_done;
3549 }
3550
3551 continue;
3552 }
3553 else if (! howto->partial_inplace)
3554 {
3555 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3556 addend = rel->r_addend;
3557 }
3558 else if ((sec->flags & SEC_MERGE)
3559 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3560 {
3561 asection *msec;
3562
3563 if (howto->rightshift || howto->src_mask != 0xffffffff)
3564 {
3565 _bfd_error_handler
3566 /* xgettext:c-format */
3567 (_("%pB(%pA+%#" PRIx64 "): "
3568 "%s relocation against SEC_MERGE section"),
3569 input_bfd, input_section,
3570 (uint64_t) rel->r_offset, howto->name);
3571 return FALSE;
3572 }
3573
3574 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3575 msec = sec;
3576 addend =
3577 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3578 - relocation;
3579 addend += msec->output_section->vma + msec->output_offset;
3580 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3581 addend = 0;
3582 }
3583 }
3584 else
3585 {
3586 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3587
3588 relocation = 0;
3589 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3590 symname = h->root.root.string;
3591 while (h->root.type == bfd_link_hash_indirect
3592 || h->root.type == bfd_link_hash_warning)
3593 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3594 if (h->root.type == bfd_link_hash_defined
3595 || h->root.type == bfd_link_hash_defweak)
3596 {
3597 bfd_boolean dyn;
3598
3599 dyn = htab ? htab->root.dynamic_sections_created : FALSE;
3600 sec = h->root.u.def.section;
3601 /* In these cases, we don't need the relocation value.
3602 We check specially because in some obscure cases
3603 sec->output_section will be NULL. */
3604 if (r_type == R_SH_GOTPC
3605 || r_type == R_SH_GOTPC_LOW16
3606 || r_type == R_SH_GOTPC_MEDLOW16
3607 || r_type == R_SH_GOTPC_MEDHI16
3608 || r_type == R_SH_GOTPC_HI16
3609 || ((r_type == R_SH_PLT32
3610 || r_type == R_SH_PLT_LOW16
3611 || r_type == R_SH_PLT_MEDLOW16
3612 || r_type == R_SH_PLT_MEDHI16
3613 || r_type == R_SH_PLT_HI16)
3614 && h->plt.offset != (bfd_vma) -1)
3615 || ((r_type == R_SH_GOT32
3616 || r_type == R_SH_GOT20
3617 || r_type == R_SH_GOTFUNCDESC
3618 || r_type == R_SH_GOTFUNCDESC20
3619 || r_type == R_SH_GOTOFFFUNCDESC
3620 || r_type == R_SH_GOTOFFFUNCDESC20
3621 || r_type == R_SH_FUNCDESC
3622 || r_type == R_SH_GOT_LOW16
3623 || r_type == R_SH_GOT_MEDLOW16
3624 || r_type == R_SH_GOT_MEDHI16
3625 || r_type == R_SH_GOT_HI16)
3626 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3627 bfd_link_pic (info),
3628 h)
3629 && (! bfd_link_pic (info)
3630 || (! info->symbolic && h->dynindx != -1)
3631 || !h->def_regular))
3632 /* The cases above are those in which relocation is
3633 overwritten in the switch block below. The cases
3634 below are those in which we must defer relocation
3635 to run-time, because we can't resolve absolute
3636 addresses when creating a shared library. */
3637 || (bfd_link_pic (info)
3638 && ((! info->symbolic && h->dynindx != -1)
3639 || !h->def_regular)
3640 && ((r_type == R_SH_DIR32
3641 && !h->forced_local)
3642 || (r_type == R_SH_REL32
3643 && !SYMBOL_CALLS_LOCAL (info, h)))
3644 && ((input_section->flags & SEC_ALLOC) != 0
3645 /* DWARF will emit R_SH_DIR32 relocations in its
3646 sections against symbols defined externally
3647 in shared libraries. We can't do anything
3648 with them here. */
3649 || ((input_section->flags & SEC_DEBUGGING) != 0
3650 && h->def_dynamic)))
3651 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3652 sections because such sections are not SEC_ALLOC and
3653 thus ld.so will not process them. */
3654 || (sec->output_section == NULL
3655 && ((input_section->flags & SEC_DEBUGGING) != 0
3656 && h->def_dynamic))
3657 || (sec->output_section == NULL
3658 && (sh_elf_hash_entry (h)->got_type == GOT_TLS_IE
3659 || sh_elf_hash_entry (h)->got_type == GOT_TLS_GD)))
3660 ;
3661 else if (sec->output_section != NULL)
3662 relocation = (h->root.u.def.value
3663 + sec->output_section->vma
3664 + sec->output_offset);
3665 else if (!bfd_link_relocatable (info)
3666 && (_bfd_elf_section_offset (output_bfd, info,
3667 input_section,
3668 rel->r_offset)
3669 != (bfd_vma) -1))
3670 {
3671 _bfd_error_handler
3672 /* xgettext:c-format */
3673 (_("%pB(%pA+%#" PRIx64 "): "
3674 "unresolvable %s relocation against symbol `%s'"),
3675 input_bfd,
3676 input_section,
3677 (uint64_t) rel->r_offset,
3678 howto->name,
3679 h->root.root.string);
3680 return FALSE;
3681 }
3682 }
3683 else if (h->root.type == bfd_link_hash_undefweak)
3684 resolved_to_zero = UNDEFWEAK_NO_DYNAMIC_RELOC (info, h);
3685 else if (info->unresolved_syms_in_objects == RM_IGNORE
3686 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3687 ;
3688 else if (!bfd_link_relocatable (info))
3689 info->callbacks->undefined_symbol
3690 (info, h->root.root.string, input_bfd, input_section,
3691 rel->r_offset,
3692 (info->unresolved_syms_in_objects == RM_DIAGNOSE
3693 && !info->warn_unresolved_syms)
3694 || ELF_ST_VISIBILITY (h->other));
3695 }
3696
3697 if (sec != NULL && discarded_section (sec))
3698 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3699 rel, 1, relend, howto, 0, contents);
3700
3701 if (bfd_link_relocatable (info))
3702 continue;
3703
3704 /* Check for inter-segment relocations in FDPIC files. Most
3705 relocations connect the relocation site to the location of
3706 the target symbol, but there are some exceptions below. */
3707 check_segment[0] = isec_segment;
3708 if (sec != NULL)
3709 check_segment[1] = sh_elf_osec_to_segment (output_bfd,
3710 sec->output_section);
3711 else
3712 check_segment[1] = -1;
3713
3714 switch ((int) r_type)
3715 {
3716 final_link_relocate:
3717 /* COFF relocs don't use the addend. The addend is used for
3718 R_SH_DIR32 to be compatible with other compilers. */
3719 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3720 contents, rel->r_offset,
3721 relocation, addend);
3722 break;
3723
3724 case R_SH_IND12W:
3725 goto final_link_relocate;
3726
3727 case R_SH_DIR8WPN:
3728 case R_SH_DIR8WPZ:
3729 case R_SH_DIR8WPL:
3730 /* If the reloc is against the start of this section, then
3731 the assembler has already taken care of it and the reloc
3732 is here only to assist in relaxing. If the reloc is not
3733 against the start of this section, then it's against an
3734 external symbol and we must deal with it ourselves. */
3735 if (input_section->output_section->vma + input_section->output_offset
3736 != relocation)
3737 {
3738 int disp = (relocation
3739 - input_section->output_section->vma
3740 - input_section->output_offset
3741 - rel->r_offset);
3742 int mask = 0;
3743 switch (r_type)
3744 {
3745 case R_SH_DIR8WPN:
3746 case R_SH_DIR8WPZ: mask = 1; break;
3747 case R_SH_DIR8WPL: mask = 3; break;
3748 default: mask = 0; break;
3749 }
3750 if (disp & mask)
3751 {
3752 _bfd_error_handler
3753 /* xgettext:c-format */
3754 (_("%pB: %#" PRIx64 ": fatal: "
3755 "unaligned branch target for relax-support relocation"),
3756 input_section->owner,
3757 (uint64_t) rel->r_offset);
3758 bfd_set_error (bfd_error_bad_value);
3759 return FALSE;
3760 }
3761 relocation -= 4;
3762 goto final_link_relocate;
3763 }
3764 r = bfd_reloc_ok;
3765 break;
3766
3767 default:
3768 bfd_set_error (bfd_error_bad_value);
3769 return FALSE;
3770
3771 case R_SH_DIR16:
3772 case R_SH_DIR8:
3773 case R_SH_DIR8U:
3774 case R_SH_DIR8S:
3775 case R_SH_DIR4U:
3776 goto final_link_relocate;
3777
3778 case R_SH_DIR8UL:
3779 case R_SH_DIR4UL:
3780 if (relocation & 3)
3781 {
3782 _bfd_error_handler
3783 /* xgettext:c-format */
3784 (_("%pB: %#" PRIx64 ": fatal: "
3785 "unaligned %s relocation %#" PRIx64),
3786 input_section->owner, (uint64_t) rel->r_offset,
3787 howto->name, (uint64_t) relocation);
3788 bfd_set_error (bfd_error_bad_value);
3789 return FALSE;
3790 }
3791 goto final_link_relocate;
3792
3793 case R_SH_DIR8UW:
3794 case R_SH_DIR8SW:
3795 case R_SH_DIR4UW:
3796 if (relocation & 1)
3797 {
3798 _bfd_error_handler
3799 /* xgettext:c-format */
3800 (_("%pB: %#" PRIx64 ": fatal: "
3801 "unaligned %s relocation %#" PRIx64 ""),
3802 input_section->owner,
3803 (uint64_t) rel->r_offset, howto->name,
3804 (uint64_t) relocation);
3805 bfd_set_error (bfd_error_bad_value);
3806 return FALSE;
3807 }
3808 goto final_link_relocate;
3809
3810 case R_SH_PSHA:
3811 if ((signed int)relocation < -32
3812 || (signed int)relocation > 32)
3813 {
3814 _bfd_error_handler
3815 /* xgettext:c-format */
3816 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHA relocation %" PRId64
3817 " not in range -32..32"),
3818 input_section->owner,
3819 (uint64_t) rel->r_offset,
3820 (int64_t) relocation);
3821 bfd_set_error (bfd_error_bad_value);
3822 return FALSE;
3823 }
3824 goto final_link_relocate;
3825
3826 case R_SH_PSHL:
3827 if ((signed int)relocation < -16
3828 || (signed int)relocation > 16)
3829 {
3830 _bfd_error_handler
3831 /* xgettext:c-format */
3832 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHL relocation %" PRId64
3833 " not in range -32..32"),
3834 input_section->owner,
3835 (uint64_t) rel->r_offset,
3836 (int64_t) relocation);
3837 bfd_set_error (bfd_error_bad_value);
3838 return FALSE;
3839 }
3840 goto final_link_relocate;
3841
3842 case R_SH_DIR32:
3843 case R_SH_REL32:
3844 if (bfd_link_pic (info)
3845 && (h == NULL
3846 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3847 && !resolved_to_zero)
3848 || h->root.type != bfd_link_hash_undefweak)
3849 && r_symndx != STN_UNDEF
3850 && (input_section->flags & SEC_ALLOC) != 0
3851 && !is_vxworks_tls
3852 && (r_type == R_SH_DIR32
3853 || !SYMBOL_CALLS_LOCAL (info, h)))
3854 {
3855 Elf_Internal_Rela outrel;
3856 bfd_byte *loc;
3857 bfd_boolean skip, relocate;
3858
3859 /* When generating a shared object, these relocations
3860 are copied into the output file to be resolved at run
3861 time. */
3862
3863 if (sreloc == NULL)
3864 {
3865 sreloc = _bfd_elf_get_dynamic_reloc_section
3866 (input_bfd, input_section, /*rela?*/ TRUE);
3867 if (sreloc == NULL)
3868 return FALSE;
3869 }
3870
3871 skip = FALSE;
3872 relocate = FALSE;
3873
3874 outrel.r_offset =
3875 _bfd_elf_section_offset (output_bfd, info, input_section,
3876 rel->r_offset);
3877 if (outrel.r_offset == (bfd_vma) -1)
3878 skip = TRUE;
3879 else if (outrel.r_offset == (bfd_vma) -2)
3880 skip = TRUE, relocate = TRUE;
3881 outrel.r_offset += (input_section->output_section->vma
3882 + input_section->output_offset);
3883
3884 if (skip)
3885 memset (&outrel, 0, sizeof outrel);
3886 else if (r_type == R_SH_REL32)
3887 {
3888 BFD_ASSERT (h != NULL && h->dynindx != -1);
3889 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
3890 outrel.r_addend
3891 = (howto->partial_inplace
3892 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3893 : addend);
3894 }
3895 else if (fdpic_p
3896 && (h == NULL
3897 || ((info->symbolic || h->dynindx == -1)
3898 && h->def_regular)))
3899 {
3900 int dynindx;
3901
3902 BFD_ASSERT (sec != NULL);
3903 BFD_ASSERT (sec->output_section != NULL);
3904 dynindx = elf_section_data (sec->output_section)->dynindx;
3905 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
3906 outrel.r_addend = relocation;
3907 outrel.r_addend
3908 += (howto->partial_inplace
3909 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3910 : addend);
3911 outrel.r_addend -= sec->output_section->vma;
3912 }
3913 else
3914 {
3915 /* h->dynindx may be -1 if this symbol was marked to
3916 become local. */
3917 if (h == NULL
3918 || ((info->symbolic || h->dynindx == -1)
3919 && h->def_regular))
3920 {
3921 relocate = howto->partial_inplace;
3922 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3923 }
3924 else
3925 {
3926 BFD_ASSERT (h->dynindx != -1);
3927 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
3928 }
3929 outrel.r_addend = relocation;
3930 outrel.r_addend
3931 += (howto->partial_inplace
3932 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3933 : addend);
3934 }
3935
3936 loc = sreloc->contents;
3937 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3938 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3939
3940 check_segment[0] = check_segment[1] = -1;
3941
3942 /* If this reloc is against an external symbol, we do
3943 not want to fiddle with the addend. Otherwise, we
3944 need to include the symbol value so that it becomes
3945 an addend for the dynamic reloc. */
3946 if (! relocate)
3947 continue;
3948 }
3949 else if (fdpic_p && !bfd_link_pic (info)
3950 && r_type == R_SH_DIR32
3951 && (input_section->flags & SEC_ALLOC) != 0)
3952 {
3953 bfd_vma offset;
3954
3955 BFD_ASSERT (htab);
3956
3957 if (sh_elf_osec_readonly_p (output_bfd,
3958 input_section->output_section))
3959 {
3960 _bfd_error_handler
3961 /* xgettext:c-format */
3962 (_("%pB(%pA+%#" PRIx64 "): "
3963 "cannot emit fixup to `%s' in read-only section"),
3964 input_bfd,
3965 input_section,
3966 (uint64_t) rel->r_offset,
3967 symname);
3968 return FALSE;
3969 }
3970
3971 offset = _bfd_elf_section_offset (output_bfd, info,
3972 input_section, rel->r_offset);
3973 if (offset != (bfd_vma)-1)
3974 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3975 input_section->output_section->vma
3976 + input_section->output_offset
3977 + rel->r_offset);
3978
3979 check_segment[0] = check_segment[1] = -1;
3980 }
3981 /* We don't want warnings for non-NULL tests on undefined weak
3982 symbols. */
3983 else if (r_type == R_SH_REL32
3984 && h
3985 && h->root.type == bfd_link_hash_undefweak)
3986 check_segment[0] = check_segment[1] = -1;
3987 goto final_link_relocate;
3988
3989 case R_SH_GOTPLT32:
3990 /* Relocation is to the entry for this symbol in the
3991 procedure linkage table. */
3992
3993 if (h == NULL
3994 || h->forced_local
3995 || ! bfd_link_pic (info)
3996 || info->symbolic
3997 || h->dynindx == -1
3998 || h->plt.offset == (bfd_vma) -1
3999 || h->got.offset != (bfd_vma) -1)
4000 goto force_got;
4001
4002 /* Relocation is to the entry for this symbol in the global
4003 offset table extension for the procedure linkage table. */
4004
4005 BFD_ASSERT (htab);
4006 BFD_ASSERT (sgotplt != NULL);
4007 relocation = (sgotplt->output_offset
4008 + (get_plt_index (htab->plt_info, h->plt.offset)
4009 + 3) * 4);
4010
4011 #ifdef GOT_BIAS
4012 relocation -= GOT_BIAS;
4013 #endif
4014
4015 goto final_link_relocate;
4016
4017 force_got:
4018 case R_SH_GOT32:
4019 case R_SH_GOT20:
4020 /* Relocation is to the entry for this symbol in the global
4021 offset table. */
4022
4023 BFD_ASSERT (htab);
4024 BFD_ASSERT (sgot != NULL);
4025 check_segment[0] = check_segment[1] = -1;
4026
4027 if (h != NULL)
4028 {
4029 bfd_boolean dyn;
4030
4031 off = h->got.offset;
4032 BFD_ASSERT (off != (bfd_vma) -1);
4033
4034 dyn = htab->root.dynamic_sections_created;
4035 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4036 bfd_link_pic (info),
4037 h)
4038 || (bfd_link_pic (info)
4039 && SYMBOL_REFERENCES_LOCAL (info, h))
4040 || ((ELF_ST_VISIBILITY (h->other)
4041 || resolved_to_zero)
4042 && h->root.type == bfd_link_hash_undefweak))
4043 {
4044 /* This is actually a static link, or it is a
4045 -Bsymbolic link and the symbol is defined
4046 locally, or the symbol was forced to be local
4047 because of a version file. We must initialize
4048 this entry in the global offset table. Since the
4049 offset must always be a multiple of 4, we use the
4050 least significant bit to record whether we have
4051 initialized it already.
4052
4053 When doing a dynamic link, we create a .rela.got
4054 relocation entry to initialize the value. This
4055 is done in the finish_dynamic_symbol routine. */
4056 if ((off & 1) != 0)
4057 off &= ~1;
4058 else
4059 {
4060 bfd_put_32 (output_bfd, relocation,
4061 sgot->contents + off);
4062 h->got.offset |= 1;
4063
4064 /* If we initialize the GOT entry here with a valid
4065 symbol address, also add a fixup. */
4066 if (fdpic_p && !bfd_link_pic (info)
4067 && sh_elf_hash_entry (h)->got_type == GOT_NORMAL
4068 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4069 || h->root.type != bfd_link_hash_undefweak))
4070 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4071 sgot->output_section->vma
4072 + sgot->output_offset
4073 + off);
4074 }
4075 }
4076
4077 relocation = sh_elf_got_offset (htab) + off;
4078 }
4079 else
4080 {
4081 BFD_ASSERT (local_got_offsets != NULL
4082 && local_got_offsets[r_symndx] != (bfd_vma) -1);
4083
4084 off = local_got_offsets[r_symndx];
4085
4086 /* The offset must always be a multiple of 4. We use
4087 the least significant bit to record whether we have
4088 already generated the necessary reloc. */
4089 if ((off & 1) != 0)
4090 off &= ~1;
4091 else
4092 {
4093 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4094
4095 if (bfd_link_pic (info))
4096 {
4097 Elf_Internal_Rela outrel;
4098 bfd_byte *loc;
4099
4100 outrel.r_offset = (sgot->output_section->vma
4101 + sgot->output_offset
4102 + off);
4103 if (fdpic_p)
4104 {
4105 int dynindx
4106 = elf_section_data (sec->output_section)->dynindx;
4107 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
4108 outrel.r_addend = relocation;
4109 outrel.r_addend -= sec->output_section->vma;
4110 }
4111 else
4112 {
4113 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
4114 outrel.r_addend = relocation;
4115 }
4116 loc = srelgot->contents;
4117 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4118 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4119 }
4120 else if (fdpic_p
4121 && (sh_elf_local_got_type (input_bfd) [r_symndx]
4122 == GOT_NORMAL))
4123 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4124 sgot->output_section->vma
4125 + sgot->output_offset
4126 + off);
4127
4128 local_got_offsets[r_symndx] |= 1;
4129 }
4130
4131 relocation = sh_elf_got_offset (htab) + off;
4132 }
4133
4134 #ifdef GOT_BIAS
4135 relocation -= GOT_BIAS;
4136 #endif
4137
4138 if (r_type == R_SH_GOT20)
4139 {
4140 r = install_movi20_field (output_bfd, relocation + addend,
4141 input_bfd, input_section, contents,
4142 rel->r_offset);
4143 break;
4144 }
4145 else
4146 goto final_link_relocate;
4147
4148 case R_SH_GOTOFF:
4149 case R_SH_GOTOFF20:
4150 /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
4151 we place at the start of the .got.plt section. This is the same
4152 as the start of the output .got section, unless there are function
4153 descriptors in front of it. */
4154 BFD_ASSERT (htab);
4155 BFD_ASSERT (sgotplt != NULL);
4156 check_segment[0] = got_segment;
4157 relocation -= sgotplt->output_section->vma + sgotplt->output_offset
4158 + htab->root.hgot->root.u.def.value;
4159
4160 #ifdef GOT_BIAS
4161 relocation -= GOT_BIAS;
4162 #endif
4163
4164 addend = rel->r_addend;
4165
4166 if (r_type == R_SH_GOTOFF20)
4167 {
4168 r = install_movi20_field (output_bfd, relocation + addend,
4169 input_bfd, input_section, contents,
4170 rel->r_offset);
4171 break;
4172 }
4173 else
4174 goto final_link_relocate;
4175
4176 case R_SH_GOTPC:
4177 /* Use global offset table as symbol value. */
4178
4179 BFD_ASSERT (sgotplt != NULL);
4180 relocation = sgotplt->output_section->vma + sgotplt->output_offset;
4181
4182 #ifdef GOT_BIAS
4183 relocation += GOT_BIAS;
4184 #endif
4185
4186 addend = rel->r_addend;
4187
4188 goto final_link_relocate;
4189
4190 case R_SH_PLT32:
4191 /* Relocation is to the entry for this symbol in the
4192 procedure linkage table. */
4193
4194 /* Resolve a PLT reloc against a local symbol directly,
4195 without using the procedure linkage table. */
4196 if (h == NULL)
4197 goto final_link_relocate;
4198
4199 /* We don't want to warn on calls to undefined weak symbols,
4200 as calls to them must be protected by non-NULL tests
4201 anyway, and unprotected calls would invoke undefined
4202 behavior. */
4203 if (h->root.type == bfd_link_hash_undefweak)
4204 check_segment[0] = check_segment[1] = -1;
4205
4206 if (h->forced_local)
4207 goto final_link_relocate;
4208
4209 if (h->plt.offset == (bfd_vma) -1)
4210 {
4211 /* We didn't make a PLT entry for this symbol. This
4212 happens when statically linking PIC code, or when
4213 using -Bsymbolic. */
4214 goto final_link_relocate;
4215 }
4216
4217 BFD_ASSERT (splt != NULL);
4218 check_segment[1] = plt_segment;
4219 relocation = (splt->output_section->vma
4220 + splt->output_offset
4221 + h->plt.offset);
4222
4223 addend = rel->r_addend;
4224
4225 goto final_link_relocate;
4226
4227 /* Relocation is to the canonical function descriptor for this
4228 symbol, possibly via the GOT. Initialize the GOT
4229 entry and function descriptor if necessary. */
4230 case R_SH_GOTFUNCDESC:
4231 case R_SH_GOTFUNCDESC20:
4232 case R_SH_FUNCDESC:
4233 {
4234 int dynindx = -1;
4235 asection *reloc_section;
4236 bfd_vma reloc_offset;
4237 int reloc_type = R_SH_FUNCDESC;
4238
4239 BFD_ASSERT (htab);
4240
4241 check_segment[0] = check_segment[1] = -1;
4242
4243 /* FIXME: See what FRV does for global symbols in the
4244 executable, with --export-dynamic. Do they need ld.so
4245 to allocate official descriptors? See what this code
4246 does. */
4247
4248 relocation = 0;
4249 addend = 0;
4250
4251 if (r_type == R_SH_FUNCDESC)
4252 {
4253 reloc_section = input_section;
4254 reloc_offset = rel->r_offset;
4255 }
4256 else
4257 {
4258 reloc_section = sgot;
4259
4260 if (h != NULL)
4261 reloc_offset = h->got.offset;
4262 else
4263 {
4264 BFD_ASSERT (local_got_offsets != NULL);
4265 reloc_offset = local_got_offsets[r_symndx];
4266 }
4267 BFD_ASSERT (reloc_offset != MINUS_ONE);
4268
4269 if (reloc_offset & 1)
4270 {
4271 reloc_offset &= ~1;
4272 goto funcdesc_done_got;
4273 }
4274 }
4275
4276 if (h && h->root.type == bfd_link_hash_undefweak
4277 && (SYMBOL_CALLS_LOCAL (info, h)
4278 || !htab->root.dynamic_sections_created))
4279 /* Undefined weak symbol which will not be dynamically
4280 resolved later; leave it at zero. */
4281 goto funcdesc_leave_zero;
4282 else if (SYMBOL_CALLS_LOCAL (info, h)
4283 && ! SYMBOL_FUNCDESC_LOCAL (info, h))
4284 {
4285 /* If the symbol needs a non-local function descriptor
4286 but binds locally (i.e., its visibility is
4287 protected), emit a dynamic relocation decayed to
4288 section+offset. This is an optimization; the dynamic
4289 linker would resolve our function descriptor request
4290 to our copy of the function anyway. */
4291 dynindx = elf_section_data (h->root.u.def.section
4292 ->output_section)->dynindx;
4293 relocation += h->root.u.def.section->output_offset
4294 + h->root.u.def.value;
4295 }
4296 else if (! SYMBOL_FUNCDESC_LOCAL (info, h))
4297 {
4298 /* If the symbol is dynamic and there will be dynamic
4299 symbol resolution because we are or are linked with a
4300 shared library, emit a FUNCDESC relocation such that
4301 the dynamic linker will allocate the function
4302 descriptor. */
4303 BFD_ASSERT (h->dynindx != -1);
4304 dynindx = h->dynindx;
4305 }
4306 else
4307 {
4308 bfd_vma offset;
4309
4310 /* Otherwise, we know we have a private function
4311 descriptor, so reference it directly. */
4312 reloc_type = R_SH_DIR32;
4313 dynindx = elf_section_data (htab->sfuncdesc
4314 ->output_section)->dynindx;
4315
4316 if (h)
4317 {
4318 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4319 BFD_ASSERT (offset != MINUS_ONE);
4320 if ((offset & 1) == 0)
4321 {
4322 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4323 offset, NULL, 0))
4324 return FALSE;
4325 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4326 }
4327 }
4328 else
4329 {
4330 union gotref *local_funcdesc;
4331
4332 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4333 offset = local_funcdesc[r_symndx].offset;
4334 BFD_ASSERT (offset != MINUS_ONE);
4335 if ((offset & 1) == 0)
4336 {
4337 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4338 offset, sec,
4339 sym->st_value))
4340 return FALSE;
4341 local_funcdesc[r_symndx].offset |= 1;
4342 }
4343 }
4344
4345 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4346 }
4347
4348 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
4349 {
4350 bfd_vma offset;
4351
4352 if (sh_elf_osec_readonly_p (output_bfd,
4353 reloc_section->output_section))
4354 {
4355 _bfd_error_handler
4356 /* xgettext:c-format */
4357 (_("%pB(%pA+%#" PRIx64 "): "
4358 "cannot emit fixup to `%s' in read-only section"),
4359 input_bfd,
4360 input_section,
4361 (uint64_t) rel->r_offset,
4362 symname);
4363 return FALSE;
4364 }
4365
4366 offset = _bfd_elf_section_offset (output_bfd, info,
4367 reloc_section, reloc_offset);
4368
4369 if (offset != (bfd_vma)-1)
4370 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4371 offset
4372 + reloc_section->output_section->vma
4373 + reloc_section->output_offset);
4374 }
4375 else if ((reloc_section->output_section->flags
4376 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
4377 {
4378 bfd_vma offset;
4379
4380 if (sh_elf_osec_readonly_p (output_bfd,
4381 reloc_section->output_section))
4382 {
4383 info->callbacks->warning
4384 (info,
4385 _("cannot emit dynamic relocations in read-only section"),
4386 symname, input_bfd, reloc_section, reloc_offset);
4387 return FALSE;
4388 }
4389
4390 offset = _bfd_elf_section_offset (output_bfd, info,
4391 reloc_section, reloc_offset);
4392
4393 if (offset != (bfd_vma)-1)
4394 sh_elf_add_dyn_reloc (output_bfd, srelgot,
4395 offset
4396 + reloc_section->output_section->vma
4397 + reloc_section->output_offset,
4398 reloc_type, dynindx, relocation);
4399
4400 if (r_type == R_SH_FUNCDESC)
4401 {
4402 r = bfd_reloc_ok;
4403 break;
4404 }
4405 else
4406 {
4407 relocation = 0;
4408 goto funcdesc_leave_zero;
4409 }
4410 }
4411
4412 if (SYMBOL_FUNCDESC_LOCAL (info, h))
4413 relocation += htab->sfuncdesc->output_section->vma;
4414 funcdesc_leave_zero:
4415 if (r_type != R_SH_FUNCDESC)
4416 {
4417 bfd_put_32 (output_bfd, relocation,
4418 reloc_section->contents + reloc_offset);
4419 if (h != NULL)
4420 h->got.offset |= 1;
4421 else
4422 local_got_offsets[r_symndx] |= 1;
4423
4424 funcdesc_done_got:
4425
4426 relocation = sh_elf_got_offset (htab) + reloc_offset;
4427 #ifdef GOT_BIAS
4428 relocation -= GOT_BIAS;
4429 #endif
4430 }
4431 if (r_type == R_SH_GOTFUNCDESC20)
4432 {
4433 r = install_movi20_field (output_bfd, relocation + addend,
4434 input_bfd, input_section, contents,
4435 rel->r_offset);
4436 break;
4437 }
4438 else
4439 goto final_link_relocate;
4440 }
4441 break;
4442
4443 case R_SH_GOTOFFFUNCDESC:
4444 case R_SH_GOTOFFFUNCDESC20:
4445 /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
4446 executable and --export-dynamic. If such symbols get
4447 ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
4448 for them. */
4449 BFD_ASSERT (htab);
4450
4451 check_segment[0] = check_segment[1] = -1;
4452 relocation = 0;
4453 addend = rel->r_addend;
4454
4455 if (h && (h->root.type == bfd_link_hash_undefweak
4456 || !SYMBOL_FUNCDESC_LOCAL (info, h)))
4457 {
4458 _bfd_error_handler
4459 /* xgettext:c-format */
4460 (_("%pB(%pA+%#" PRIx64 "): "
4461 "%s relocation against external symbol \"%s\""),
4462 input_bfd, input_section, (uint64_t) rel->r_offset,
4463 howto->name, h->root.root.string);
4464 return FALSE;
4465 }
4466 else
4467 {
4468 bfd_vma offset;
4469
4470 /* Otherwise, we know we have a private function
4471 descriptor, so reference it directly. */
4472 if (h)
4473 {
4474 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4475 BFD_ASSERT (offset != MINUS_ONE);
4476 if ((offset & 1) == 0)
4477 {
4478 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4479 offset, NULL, 0))
4480 return FALSE;
4481 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4482 }
4483 }
4484 else
4485 {
4486 union gotref *local_funcdesc;
4487
4488 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4489 offset = local_funcdesc[r_symndx].offset;
4490 BFD_ASSERT (offset != MINUS_ONE);
4491 if ((offset & 1) == 0)
4492 {
4493 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4494 offset, sec,
4495 sym->st_value))
4496 return FALSE;
4497 local_funcdesc[r_symndx].offset |= 1;
4498 }
4499 }
4500
4501 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4502 }
4503
4504 relocation -= (htab->root.hgot->root.u.def.value
4505 + sgotplt->output_offset);
4506 #ifdef GOT_BIAS
4507 relocation -= GOT_BIAS;
4508 #endif
4509
4510 if (r_type == R_SH_GOTOFFFUNCDESC20)
4511 {
4512 r = install_movi20_field (output_bfd, relocation + addend,
4513 input_bfd, input_section, contents,
4514 rel->r_offset);
4515 break;
4516 }
4517 else
4518 goto final_link_relocate;
4519
4520 case R_SH_LOOP_START:
4521 {
4522 static bfd_vma start, end;
4523
4524 start = (relocation + rel->r_addend
4525 - (sec->output_section->vma + sec->output_offset));
4526 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4527 rel->r_offset, sec, start, end);
4528 break;
4529
4530 case R_SH_LOOP_END:
4531 end = (relocation + rel->r_addend
4532 - (sec->output_section->vma + sec->output_offset));
4533 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4534 rel->r_offset, sec, start, end);
4535 break;
4536 }
4537
4538 case R_SH_TLS_GD_32:
4539 case R_SH_TLS_IE_32:
4540 BFD_ASSERT (htab);
4541 check_segment[0] = check_segment[1] = -1;
4542 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4543 got_type = GOT_UNKNOWN;
4544 if (h == NULL && local_got_offsets)
4545 got_type = sh_elf_local_got_type (input_bfd) [r_symndx];
4546 else if (h != NULL)
4547 {
4548 got_type = sh_elf_hash_entry (h)->got_type;
4549 if (! bfd_link_pic (info)
4550 && (h->dynindx == -1
4551 || h->def_regular))
4552 r_type = R_SH_TLS_LE_32;
4553 }
4554
4555 if (r_type == R_SH_TLS_GD_32 && got_type == GOT_TLS_IE)
4556 r_type = R_SH_TLS_IE_32;
4557
4558 if (r_type == R_SH_TLS_LE_32)
4559 {
4560 bfd_vma offset;
4561 unsigned short insn;
4562
4563 if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4564 {
4565 /* GD->LE transition:
4566 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4567 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4568 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4569 We change it into:
4570 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4571 nop; nop; ...
4572 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4573
4574 offset = rel->r_offset;
4575 if (offset < 16)
4576 {
4577 _bfd_error_handler
4578 /* xgettext:c-format */
4579 (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64),
4580 input_bfd, input_section, (uint64_t) offset);
4581 return FALSE;
4582 }
4583
4584 /* Size of GD instructions is 16 or 18. */
4585 offset -= 16;
4586 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4587 if ((insn & 0xff00) == 0xc700)
4588 {
4589 BFD_ASSERT (offset >= 2);
4590 offset -= 2;
4591 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4592 }
4593
4594 if ((insn & 0xff00) != 0xd400)
4595 _bfd_error_handler
4596 /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */
4597 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd4?\?)"),
4598 input_bfd, input_section, (uint64_t) offset, (int) insn);
4599
4600 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4601
4602 if ((insn & 0xff00) != 0xc700)
4603 _bfd_error_handler
4604 /* xgettext:c-format */
4605 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xc7?\?)"),
4606 input_bfd, input_section, (uint64_t) offset, (int) insn);
4607
4608 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4609 if ((insn & 0xff00) != 0xd100)
4610 _bfd_error_handler
4611 /* xgettext:c-format */
4612 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd1?\?)"),
4613 input_bfd, input_section, (uint64_t) offset, (int) insn);
4614
4615 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4616 if (insn != 0x310c)
4617 _bfd_error_handler
4618 /* xgettext:c-format */
4619 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x310c)"),
4620 input_bfd, input_section, (uint64_t) offset, (int) insn);
4621
4622 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4623 if (insn != 0x410b)
4624 _bfd_error_handler
4625 /* xgettext:c-format */
4626 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x410b)"),
4627 input_bfd, input_section, (uint64_t) offset, (int) insn);
4628
4629 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4630 if (insn != 0x34cc)
4631 _bfd_error_handler
4632 /* xgettext:c-format */
4633 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x34cc)"),
4634 input_bfd, input_section, (uint64_t) offset, (int) insn);
4635
4636 bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4637 bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4638 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4639 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4640 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4641 }
4642 else
4643 {
4644 int target;
4645
4646 /* IE->LE transition:
4647 mov.l 1f,r0;
4648 stc gbr,rN;
4649 mov.l @(r0,r12),rM;
4650 bra 2f;
4651 add ...;
4652 .align 2;
4653 1: x@GOTTPOFF;
4654 2:
4655 We change it into:
4656 mov.l .Ln,rM;
4657 stc gbr,rN;
4658 nop;
4659 ...;
4660 1: x@TPOFF;
4661 2:. */
4662
4663 offset = rel->r_offset;
4664 if (offset < 16)
4665 {
4666 _bfd_error_handler
4667 /* xgettext:c-format */
4668 (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64),
4669 input_bfd, input_section, (uint64_t) offset);
4670 return FALSE;
4671 }
4672
4673 /* Size of IE instructions is 10 or 12. */
4674 offset -= 10;
4675 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4676 if ((insn & 0xf0ff) == 0x0012)
4677 {
4678 BFD_ASSERT (offset >= 2);
4679 offset -= 2;
4680 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4681 }
4682
4683 if ((insn & 0xff00) != 0xd000)
4684 _bfd_error_handler
4685 /* xgettext:c-format */
4686 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd0??: mov.l)"),
4687 input_bfd, input_section, (uint64_t) offset, (int) insn);
4688
4689 target = insn & 0x00ff;
4690
4691 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4692 if ((insn & 0xf0ff) != 0x0012)
4693 _bfd_error_handler
4694 /* xgettext:c-format */
4695 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?12: stc)"),
4696 input_bfd, input_section, (uint64_t) (offset + 2), (int) insn);
4697
4698 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4699 if ((insn & 0xf0ff) != 0x00ce)
4700 _bfd_error_handler
4701 /* xgettext:c-format */
4702 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?ce: mov.l)"),
4703 input_bfd, input_section, (uint64_t) (offset + 4), (int) insn);
4704
4705 insn = 0xd000 | (insn & 0x0f00) | target;
4706 bfd_put_16 (output_bfd, insn, contents + offset + 0);
4707 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4708 }
4709
4710 bfd_put_32 (output_bfd, tpoff (info, relocation),
4711 contents + rel->r_offset);
4712 continue;
4713 }
4714
4715 if (sgot == NULL || sgotplt == NULL)
4716 abort ();
4717
4718 if (h != NULL)
4719 off = h->got.offset;
4720 else
4721 {
4722 if (local_got_offsets == NULL)
4723 abort ();
4724
4725 off = local_got_offsets[r_symndx];
4726 }
4727
4728 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4729 if (r_type == R_SH_TLS_IE_32
4730 && ! htab->root.dynamic_sections_created)
4731 {
4732 off &= ~1;
4733 bfd_put_32 (output_bfd, tpoff (info, relocation),
4734 sgot->contents + off);
4735 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4736 contents + rel->r_offset);
4737 continue;
4738 }
4739
4740 if ((off & 1) != 0)
4741 off &= ~1;
4742 else
4743 {
4744 Elf_Internal_Rela outrel;
4745 bfd_byte *loc;
4746 int dr_type, indx;
4747
4748 outrel.r_offset = (sgot->output_section->vma
4749 + sgot->output_offset + off);
4750
4751 if (h == NULL || h->dynindx == -1)
4752 indx = 0;
4753 else
4754 indx = h->dynindx;
4755
4756 dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4757 R_SH_TLS_TPOFF32);
4758 if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4759 outrel.r_addend = relocation - dtpoff_base (info);
4760 else
4761 outrel.r_addend = 0;
4762 outrel.r_info = ELF32_R_INFO (indx, dr_type);
4763 loc = srelgot->contents;
4764 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4765 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4766
4767 if (r_type == R_SH_TLS_GD_32)
4768 {
4769 if (indx == 0)
4770 {
4771 bfd_put_32 (output_bfd,
4772 relocation - dtpoff_base (info),
4773 sgot->contents + off + 4);
4774 }
4775 else
4776 {
4777 outrel.r_info = ELF32_R_INFO (indx,
4778 R_SH_TLS_DTPOFF32);
4779 outrel.r_offset += 4;
4780 outrel.r_addend = 0;
4781 srelgot->reloc_count++;
4782 loc += sizeof (Elf32_External_Rela);
4783 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4784 }
4785 }
4786
4787 if (h != NULL)
4788 h->got.offset |= 1;
4789 else
4790 local_got_offsets[r_symndx] |= 1;
4791 }
4792
4793 if (off >= (bfd_vma) -2)
4794 abort ();
4795
4796 if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4797 relocation = sh_elf_got_offset (htab) + off;
4798 else
4799 {
4800 bfd_vma offset;
4801 unsigned short insn;
4802
4803 /* GD->IE transition:
4804 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4805 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4806 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4807 We change it into:
4808 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4809 nop; nop; bra 3f; nop; .align 2;
4810 1: .long x@TPOFF; 2:...; 3:. */
4811
4812 offset = rel->r_offset;
4813 if (offset < 16)
4814 {
4815 _bfd_error_handler
4816 /* xgettext:c-format */
4817 (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64),
4818 input_bfd, input_section, (uint64_t) offset);
4819 return FALSE;
4820 }
4821
4822 /* Size of GD instructions is 16 or 18. */
4823 offset -= 16;
4824 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4825 if ((insn & 0xff00) == 0xc700)
4826 {
4827 BFD_ASSERT (offset >= 2);
4828 offset -= 2;
4829 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4830 }
4831
4832 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4833
4834 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4835 bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4836
4837 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4838 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4839 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4840 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4841 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4842 BFD_ASSERT (insn == 0x310c);
4843 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4844 BFD_ASSERT (insn == 0x410b);
4845 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4846 BFD_ASSERT (insn == 0x34cc);
4847
4848 bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4849 bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4850 bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4851 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4852 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4853
4854 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4855 contents + rel->r_offset);
4856
4857 continue;
4858 }
4859
4860 addend = rel->r_addend;
4861
4862 goto final_link_relocate;
4863
4864 case R_SH_TLS_LD_32:
4865 BFD_ASSERT (htab);
4866 check_segment[0] = check_segment[1] = -1;
4867 if (! bfd_link_pic (info))
4868 {
4869 bfd_vma offset;
4870 unsigned short insn;
4871
4872 /* LD->LE transition:
4873 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4874 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4875 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4876 We change it into:
4877 stc gbr,r0; nop; nop; nop;
4878 nop; nop; bra 3f; ...; 3:. */
4879
4880 offset = rel->r_offset;
4881 if (offset < 16)
4882 {
4883 _bfd_error_handler
4884 /* xgettext:c-format */
4885 (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64),
4886 input_bfd, input_section, (uint64_t) offset);
4887 return FALSE;
4888 }
4889
4890 /* Size of LD instructions is 16 or 18. */
4891 offset -= 16;
4892 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4893 if ((insn & 0xff00) == 0xc700)
4894 {
4895 BFD_ASSERT (offset >= 2);
4896 offset -= 2;
4897 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4898 }
4899
4900 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4901 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4902 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4903 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4904 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4905 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4906 BFD_ASSERT (insn == 0x310c);
4907 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4908 BFD_ASSERT (insn == 0x410b);
4909 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4910 BFD_ASSERT (insn == 0x34cc);
4911
4912 bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
4913 bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
4914 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4915 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4916 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4917 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4918
4919 continue;
4920 }
4921
4922 if (sgot == NULL || sgotplt == NULL)
4923 abort ();
4924
4925 off = htab->tls_ldm_got.offset;
4926 if (off & 1)
4927 off &= ~1;
4928 else
4929 {
4930 Elf_Internal_Rela outrel;
4931 bfd_byte *loc;
4932
4933 outrel.r_offset = (sgot->output_section->vma
4934 + sgot->output_offset + off);
4935 outrel.r_addend = 0;
4936 outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
4937 loc = srelgot->contents;
4938 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4939 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4940 htab->tls_ldm_got.offset |= 1;
4941 }
4942
4943 relocation = sh_elf_got_offset (htab) + off;
4944 addend = rel->r_addend;
4945
4946 goto final_link_relocate;
4947
4948 case R_SH_TLS_LDO_32:
4949 check_segment[0] = check_segment[1] = -1;
4950 if (! bfd_link_pic (info))
4951 relocation = tpoff (info, relocation);
4952 else
4953 relocation -= dtpoff_base (info);
4954
4955 addend = rel->r_addend;
4956 goto final_link_relocate;
4957
4958 case R_SH_TLS_LE_32:
4959 {
4960 int indx;
4961 Elf_Internal_Rela outrel;
4962 bfd_byte *loc;
4963
4964 check_segment[0] = check_segment[1] = -1;
4965
4966 if (!bfd_link_dll (info))
4967 {
4968 relocation = tpoff (info, relocation);
4969 addend = rel->r_addend;
4970 goto final_link_relocate;
4971 }
4972
4973 if (sreloc == NULL)
4974 {
4975 sreloc = _bfd_elf_get_dynamic_reloc_section
4976 (input_bfd, input_section, /*rela?*/ TRUE);
4977 if (sreloc == NULL)
4978 return FALSE;
4979 }
4980
4981 if (h == NULL || h->dynindx == -1)
4982 indx = 0;
4983 else
4984 indx = h->dynindx;
4985
4986 outrel.r_offset = (input_section->output_section->vma
4987 + input_section->output_offset
4988 + rel->r_offset);
4989 outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
4990 if (indx == 0)
4991 outrel.r_addend = relocation - dtpoff_base (info);
4992 else
4993 outrel.r_addend = 0;
4994
4995 loc = sreloc->contents;
4996 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4997 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4998 continue;
4999 }
5000 }
5001
5002 relocation_done:
5003 if (fdpic_p && check_segment[0] != (unsigned) -1
5004 && check_segment[0] != check_segment[1])
5005 {
5006 /* We don't want duplicate errors for undefined symbols. */
5007 if (!h || h->root.type != bfd_link_hash_undefined)
5008 {
5009 if (bfd_link_pic (info))
5010 {
5011 info->callbacks->einfo
5012 /* xgettext:c-format */
5013 (_("%X%C: relocation to \"%s\" references a different segment\n"),
5014 input_bfd, input_section, rel->r_offset, symname);
5015 return FALSE;
5016 }
5017 else
5018 info->callbacks->einfo
5019 /* xgettext:c-format */
5020 (_("%C: warning: relocation to \"%s\" references a different segment\n"),
5021 input_bfd, input_section, rel->r_offset, symname);
5022 }
5023
5024 elf_elfheader (output_bfd)->e_flags |= EF_SH_PIC;
5025 }
5026
5027 if (r != bfd_reloc_ok)
5028 {
5029 switch (r)
5030 {
5031 default:
5032 case bfd_reloc_outofrange:
5033 abort ();
5034 case bfd_reloc_overflow:
5035 {
5036 const char *name;
5037
5038 if (h != NULL)
5039 name = NULL;
5040 else
5041 {
5042 name = (bfd_elf_string_from_elf_section
5043 (input_bfd, symtab_hdr->sh_link, sym->st_name));
5044 if (name == NULL)
5045 return FALSE;
5046 if (*name == '\0')
5047 name = bfd_section_name (sec);
5048 }
5049 (*info->callbacks->reloc_overflow)
5050 (info, (h ? &h->root : NULL), name, howto->name,
5051 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
5052 }
5053 break;
5054 }
5055 }
5056 }
5057
5058 return TRUE;
5059 }
5060
5061 /* This is a version of bfd_generic_get_relocated_section_contents
5062 which uses sh_elf_relocate_section. */
5063
5064 static bfd_byte *
5065 sh_elf_get_relocated_section_contents (bfd *output_bfd,
5066 struct bfd_link_info *link_info,
5067 struct bfd_link_order *link_order,
5068 bfd_byte *data,
5069 bfd_boolean relocatable,
5070 asymbol **symbols)
5071 {
5072 Elf_Internal_Shdr *symtab_hdr;
5073 asection *input_section = link_order->u.indirect.section;
5074 bfd *input_bfd = input_section->owner;
5075 asection **sections = NULL;
5076 Elf_Internal_Rela *internal_relocs = NULL;
5077 Elf_Internal_Sym *isymbuf = NULL;
5078
5079 /* We only need to handle the case of relaxing, or of having a
5080 particular set of section contents, specially. */
5081 if (relocatable
5082 || elf_section_data (input_section)->this_hdr.contents == NULL)
5083 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
5084 link_order, data,
5085 relocatable,
5086 symbols);
5087
5088 symtab_hdr = &elf_symtab_hdr (input_bfd);
5089
5090 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
5091 (size_t) input_section->size);
5092
5093 if ((input_section->flags & SEC_RELOC) != 0
5094 && input_section->reloc_count > 0)
5095 {
5096 asection **secpp;
5097 Elf_Internal_Sym *isym, *isymend;
5098 bfd_size_type amt;
5099
5100 internal_relocs = (_bfd_elf_link_read_relocs
5101 (input_bfd, input_section, NULL,
5102 (Elf_Internal_Rela *) NULL, FALSE));
5103 if (internal_relocs == NULL)
5104 goto error_return;
5105
5106 if (symtab_hdr->sh_info != 0)
5107 {
5108 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5109 if (isymbuf == NULL)
5110 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
5111 symtab_hdr->sh_info, 0,
5112 NULL, NULL, NULL);
5113 if (isymbuf == NULL)
5114 goto error_return;
5115 }
5116
5117 amt = symtab_hdr->sh_info;
5118 amt *= sizeof (asection *);
5119 sections = (asection **) bfd_malloc (amt);
5120 if (sections == NULL && amt != 0)
5121 goto error_return;
5122
5123 isymend = isymbuf + symtab_hdr->sh_info;
5124 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
5125 {
5126 asection *isec;
5127
5128 if (isym->st_shndx == SHN_UNDEF)
5129 isec = bfd_und_section_ptr;
5130 else if (isym->st_shndx == SHN_ABS)
5131 isec = bfd_abs_section_ptr;
5132 else if (isym->st_shndx == SHN_COMMON)
5133 isec = bfd_com_section_ptr;
5134 else
5135 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
5136
5137 *secpp = isec;
5138 }
5139
5140 if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
5141 input_section, data, internal_relocs,
5142 isymbuf, sections))
5143 goto error_return;
5144
5145 free (sections);
5146 if (symtab_hdr->contents != (unsigned char *) isymbuf)
5147 free (isymbuf);
5148 if (elf_section_data (input_section)->relocs != internal_relocs)
5149 free (internal_relocs);
5150 }
5151
5152 return data;
5153
5154 error_return:
5155 free (sections);
5156 if (symtab_hdr->contents != (unsigned char *) isymbuf)
5157 free (isymbuf);
5158 if (elf_section_data (input_section)->relocs != internal_relocs)
5159 free (internal_relocs);
5160 return NULL;
5161 }
5162
5163 /* Return the base VMA address which should be subtracted from real addresses
5164 when resolving @dtpoff relocation.
5165 This is PT_TLS segment p_vaddr. */
5166
5167 static bfd_vma
5168 dtpoff_base (struct bfd_link_info *info)
5169 {
5170 /* If tls_sec is NULL, we should have signalled an error already. */
5171 if (elf_hash_table (info)->tls_sec == NULL)
5172 return 0;
5173 return elf_hash_table (info)->tls_sec->vma;
5174 }
5175
5176 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
5177
5178 static bfd_vma
5179 tpoff (struct bfd_link_info *info, bfd_vma address)
5180 {
5181 /* If tls_sec is NULL, we should have signalled an error already. */
5182 if (elf_hash_table (info)->tls_sec == NULL)
5183 return 0;
5184 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
5185 structure which has 2 pointer fields. */
5186 return (address - elf_hash_table (info)->tls_sec->vma
5187 + align_power ((bfd_vma) 8,
5188 elf_hash_table (info)->tls_sec->alignment_power));
5189 }
5190
5191 static asection *
5192 sh_elf_gc_mark_hook (asection *sec,
5193 struct bfd_link_info *info,
5194 Elf_Internal_Rela *rel,
5195 struct elf_link_hash_entry *h,
5196 Elf_Internal_Sym *sym)
5197 {
5198 if (h != NULL)
5199 switch (ELF32_R_TYPE (rel->r_info))
5200 {
5201 case R_SH_GNU_VTINHERIT:
5202 case R_SH_GNU_VTENTRY:
5203 return NULL;
5204 }
5205
5206 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5207 }
5208
5209 /* Copy the extra info we tack onto an elf_link_hash_entry. */
5210
5211 static void
5212 sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
5213 struct elf_link_hash_entry *dir,
5214 struct elf_link_hash_entry *ind)
5215 {
5216 struct elf_sh_link_hash_entry *edir, *eind;
5217
5218 edir = (struct elf_sh_link_hash_entry *) dir;
5219 eind = (struct elf_sh_link_hash_entry *) ind;
5220
5221 edir->gotplt_refcount = eind->gotplt_refcount;
5222 eind->gotplt_refcount = 0;
5223 edir->funcdesc.refcount += eind->funcdesc.refcount;
5224 eind->funcdesc.refcount = 0;
5225 edir->abs_funcdesc_refcount += eind->abs_funcdesc_refcount;
5226 eind->abs_funcdesc_refcount = 0;
5227
5228 if (ind->root.type == bfd_link_hash_indirect
5229 && dir->got.refcount <= 0)
5230 {
5231 edir->got_type = eind->got_type;
5232 eind->got_type = GOT_UNKNOWN;
5233 }
5234
5235 if (ind->root.type != bfd_link_hash_indirect
5236 && dir->dynamic_adjusted)
5237 {
5238 /* If called to transfer flags for a weakdef during processing
5239 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
5240 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
5241 if (dir->versioned != versioned_hidden)
5242 dir->ref_dynamic |= ind->ref_dynamic;
5243 dir->ref_regular |= ind->ref_regular;
5244 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
5245 dir->needs_plt |= ind->needs_plt;
5246 }
5247 else
5248 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
5249 }
5250
5251 static int
5252 sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
5253 int is_local)
5254 {
5255 if (bfd_link_pic (info))
5256 return r_type;
5257
5258 switch (r_type)
5259 {
5260 case R_SH_TLS_GD_32:
5261 case R_SH_TLS_IE_32:
5262 if (is_local)
5263 return R_SH_TLS_LE_32;
5264 return R_SH_TLS_IE_32;
5265 case R_SH_TLS_LD_32:
5266 return R_SH_TLS_LE_32;
5267 }
5268
5269 return r_type;
5270 }
5271
5272 /* Look through the relocs for a section during the first phase.
5273 Since we don't do .gots or .plts, we just need to consider the
5274 virtual table relocs for gc. */
5275
5276 static bfd_boolean
5277 sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
5278 const Elf_Internal_Rela *relocs)
5279 {
5280 Elf_Internal_Shdr *symtab_hdr;
5281 struct elf_link_hash_entry **sym_hashes;
5282 struct elf_sh_link_hash_table *htab;
5283 const Elf_Internal_Rela *rel;
5284 const Elf_Internal_Rela *rel_end;
5285 asection *sreloc;
5286 unsigned int r_type;
5287 enum got_type got_type, old_got_type;
5288
5289 sreloc = NULL;
5290
5291 if (bfd_link_relocatable (info))
5292 return TRUE;
5293
5294 BFD_ASSERT (is_sh_elf (abfd));
5295
5296 symtab_hdr = &elf_symtab_hdr (abfd);
5297 sym_hashes = elf_sym_hashes (abfd);
5298
5299 htab = sh_elf_hash_table (info);
5300 if (htab == NULL)
5301 return FALSE;
5302
5303 rel_end = relocs + sec->reloc_count;
5304 for (rel = relocs; rel < rel_end; rel++)
5305 {
5306 struct elf_link_hash_entry *h;
5307 unsigned long r_symndx;
5308
5309 r_symndx = ELF32_R_SYM (rel->r_info);
5310 r_type = ELF32_R_TYPE (rel->r_info);
5311
5312 if (r_symndx < symtab_hdr->sh_info)
5313 h = NULL;
5314 else
5315 {
5316 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5317 while (h->root.type == bfd_link_hash_indirect
5318 || h->root.type == bfd_link_hash_warning)
5319 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5320 }
5321
5322 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
5323 if (! bfd_link_pic (info)
5324 && r_type == R_SH_TLS_IE_32
5325 && h != NULL
5326 && h->root.type != bfd_link_hash_undefined
5327 && h->root.type != bfd_link_hash_undefweak
5328 && (h->dynindx == -1
5329 || h->def_regular))
5330 r_type = R_SH_TLS_LE_32;
5331
5332 if (htab->fdpic_p)
5333 switch (r_type)
5334 {
5335 case R_SH_GOTOFFFUNCDESC:
5336 case R_SH_GOTOFFFUNCDESC20:
5337 case R_SH_FUNCDESC:
5338 case R_SH_GOTFUNCDESC:
5339 case R_SH_GOTFUNCDESC20:
5340 if (h != NULL)
5341 {
5342 if (h->dynindx == -1)
5343 switch (ELF_ST_VISIBILITY (h->other))
5344 {
5345 case STV_INTERNAL:
5346 case STV_HIDDEN:
5347 break;
5348 default:
5349 bfd_elf_link_record_dynamic_symbol (info, h);
5350 break;
5351 }
5352 }
5353 break;
5354 }
5355
5356 /* Some relocs require a global offset table. */
5357 if (htab->root.sgot == NULL)
5358 {
5359 switch (r_type)
5360 {
5361 case R_SH_DIR32:
5362 /* This may require an rofixup. */
5363 if (!htab->fdpic_p)
5364 break;
5365 /* Fall through. */
5366 case R_SH_GOTPLT32:
5367 case R_SH_GOT32:
5368 case R_SH_GOT20:
5369 case R_SH_GOTOFF:
5370 case R_SH_GOTOFF20:
5371 case R_SH_FUNCDESC:
5372 case R_SH_GOTFUNCDESC:
5373 case R_SH_GOTFUNCDESC20:
5374 case R_SH_GOTOFFFUNCDESC:
5375 case R_SH_GOTOFFFUNCDESC20:
5376 case R_SH_GOTPC:
5377 case R_SH_TLS_GD_32:
5378 case R_SH_TLS_LD_32:
5379 case R_SH_TLS_IE_32:
5380 if (htab->root.dynobj == NULL)
5381 htab->root.dynobj = abfd;
5382 if (!create_got_section (htab->root.dynobj, info))
5383 return FALSE;
5384 break;
5385
5386 default:
5387 break;
5388 }
5389 }
5390
5391 switch (r_type)
5392 {
5393 /* This relocation describes the C++ object vtable hierarchy.
5394 Reconstruct it for later use during GC. */
5395 case R_SH_GNU_VTINHERIT:
5396 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5397 return FALSE;
5398 break;
5399
5400 /* This relocation describes which C++ vtable entries are actually
5401 used. Record for later use during GC. */
5402 case R_SH_GNU_VTENTRY:
5403 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5404 return FALSE;
5405 break;
5406
5407 case R_SH_TLS_IE_32:
5408 if (bfd_link_pic (info))
5409 info->flags |= DF_STATIC_TLS;
5410
5411 /* FALLTHROUGH */
5412 force_got:
5413 case R_SH_TLS_GD_32:
5414 case R_SH_GOT32:
5415 case R_SH_GOT20:
5416 case R_SH_GOTFUNCDESC:
5417 case R_SH_GOTFUNCDESC20:
5418 switch (r_type)
5419 {
5420 default:
5421 got_type = GOT_NORMAL;
5422 break;
5423 case R_SH_TLS_GD_32:
5424 got_type = GOT_TLS_GD;
5425 break;
5426 case R_SH_TLS_IE_32:
5427 got_type = GOT_TLS_IE;
5428 break;
5429 case R_SH_GOTFUNCDESC:
5430 case R_SH_GOTFUNCDESC20:
5431 got_type = GOT_FUNCDESC;
5432 break;
5433 }
5434
5435 if (h != NULL)
5436 {
5437 h->got.refcount += 1;
5438 old_got_type = sh_elf_hash_entry (h)->got_type;
5439 }
5440 else
5441 {
5442 bfd_signed_vma *local_got_refcounts;
5443
5444 /* This is a global offset table entry for a local
5445 symbol. */
5446 local_got_refcounts = elf_local_got_refcounts (abfd);
5447 if (local_got_refcounts == NULL)
5448 {
5449 bfd_size_type size;
5450
5451 size = symtab_hdr->sh_info;
5452 size *= sizeof (bfd_signed_vma);
5453 size += symtab_hdr->sh_info;
5454 local_got_refcounts = ((bfd_signed_vma *)
5455 bfd_zalloc (abfd, size));
5456 if (local_got_refcounts == NULL)
5457 return FALSE;
5458 elf_local_got_refcounts (abfd) = local_got_refcounts;
5459 sh_elf_local_got_type (abfd)
5460 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5461 }
5462 local_got_refcounts[r_symndx] += 1;
5463 old_got_type = sh_elf_local_got_type (abfd) [r_symndx];
5464 }
5465
5466 /* If a TLS symbol is accessed using IE at least once,
5467 there is no point to use dynamic model for it. */
5468 if (old_got_type != got_type && old_got_type != GOT_UNKNOWN
5469 && (old_got_type != GOT_TLS_GD || got_type != GOT_TLS_IE))
5470 {
5471 if (old_got_type == GOT_TLS_IE && got_type == GOT_TLS_GD)
5472 got_type = GOT_TLS_IE;
5473 else
5474 {
5475 if ((old_got_type == GOT_FUNCDESC || got_type == GOT_FUNCDESC)
5476 && (old_got_type == GOT_NORMAL || got_type == GOT_NORMAL))
5477 _bfd_error_handler
5478 /* xgettext:c-format */
5479 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5480 abfd, h->root.root.string);
5481 else if (old_got_type == GOT_FUNCDESC
5482 || got_type == GOT_FUNCDESC)
5483 _bfd_error_handler
5484 /* xgettext:c-format */
5485 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5486 abfd, h->root.root.string);
5487 else
5488 _bfd_error_handler
5489 /* xgettext:c-format */
5490 (_("%pB: `%s' accessed both as normal and thread local symbol"),
5491 abfd, h->root.root.string);
5492 return FALSE;
5493 }
5494 }
5495
5496 if (old_got_type != got_type)
5497 {
5498 if (h != NULL)
5499 sh_elf_hash_entry (h)->got_type = got_type;
5500 else
5501 sh_elf_local_got_type (abfd) [r_symndx] = got_type;
5502 }
5503
5504 break;
5505
5506 case R_SH_TLS_LD_32:
5507 sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5508 break;
5509
5510 case R_SH_FUNCDESC:
5511 case R_SH_GOTOFFFUNCDESC:
5512 case R_SH_GOTOFFFUNCDESC20:
5513 if (rel->r_addend)
5514 {
5515 _bfd_error_handler
5516 (_("%pB: Function descriptor relocation with non-zero addend"),
5517 abfd);
5518 return FALSE;
5519 }
5520
5521 if (h == NULL)
5522 {
5523 union gotref *local_funcdesc;
5524
5525 /* We need a function descriptor for a local symbol. */
5526 local_funcdesc = sh_elf_local_funcdesc (abfd);
5527 if (local_funcdesc == NULL)
5528 {
5529 bfd_size_type size;
5530
5531 size = symtab_hdr->sh_info * sizeof (union gotref);
5532 local_funcdesc = (union gotref *) bfd_zalloc (abfd, size);
5533 if (local_funcdesc == NULL)
5534 return FALSE;
5535 sh_elf_local_funcdesc (abfd) = local_funcdesc;
5536 }
5537 local_funcdesc[r_symndx].refcount += 1;
5538
5539 if (r_type == R_SH_FUNCDESC)
5540 {
5541 if (!bfd_link_pic (info))
5542 htab->srofixup->size += 4;
5543 else
5544 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
5545 }
5546 }
5547 else
5548 {
5549 sh_elf_hash_entry (h)->funcdesc.refcount++;
5550 if (r_type == R_SH_FUNCDESC)
5551 sh_elf_hash_entry (h)->abs_funcdesc_refcount++;
5552
5553 /* If there is a function descriptor reference, then
5554 there should not be any non-FDPIC references. */
5555 old_got_type = sh_elf_hash_entry (h)->got_type;
5556 if (old_got_type != GOT_FUNCDESC && old_got_type != GOT_UNKNOWN)
5557 {
5558 if (old_got_type == GOT_NORMAL)
5559 _bfd_error_handler
5560 /* xgettext:c-format */
5561 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5562 abfd, h->root.root.string);
5563 else
5564 _bfd_error_handler
5565 /* xgettext:c-format */
5566 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5567 abfd, h->root.root.string);
5568 }
5569 }
5570 break;
5571
5572 case R_SH_GOTPLT32:
5573 /* If this is a local symbol, we resolve it directly without
5574 creating a procedure linkage table entry. */
5575
5576 if (h == NULL
5577 || h->forced_local
5578 || ! bfd_link_pic (info)
5579 || info->symbolic
5580 || h->dynindx == -1)
5581 goto force_got;
5582
5583 h->needs_plt = 1;
5584 h->plt.refcount += 1;
5585 ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5586
5587 break;
5588
5589 case R_SH_PLT32:
5590 /* This symbol requires a procedure linkage table entry. We
5591 actually build the entry in adjust_dynamic_symbol,
5592 because this might be a case of linking PIC code which is
5593 never referenced by a dynamic object, in which case we
5594 don't need to generate a procedure linkage table entry
5595 after all. */
5596
5597 /* If this is a local symbol, we resolve it directly without
5598 creating a procedure linkage table entry. */
5599 if (h == NULL)
5600 continue;
5601
5602 if (h->forced_local)
5603 break;
5604
5605 h->needs_plt = 1;
5606 h->plt.refcount += 1;
5607 break;
5608
5609 case R_SH_DIR32:
5610 case R_SH_REL32:
5611 if (h != NULL && ! bfd_link_pic (info))
5612 {
5613 h->non_got_ref = 1;
5614 h->plt.refcount += 1;
5615 }
5616
5617 /* If we are creating a shared library, and this is a reloc
5618 against a global symbol, or a non PC relative reloc
5619 against a local symbol, then we need to copy the reloc
5620 into the shared library. However, if we are linking with
5621 -Bsymbolic, we do not need to copy a reloc against a
5622 global symbol which is defined in an object we are
5623 including in the link (i.e., DEF_REGULAR is set). At
5624 this point we have not seen all the input files, so it is
5625 possible that DEF_REGULAR is not set now but will be set
5626 later (it is never cleared). We account for that
5627 possibility below by storing information in the
5628 dyn_relocs field of the hash table entry. A similar
5629 situation occurs when creating shared libraries and symbol
5630 visibility changes render the symbol local.
5631
5632 If on the other hand, we are creating an executable, we
5633 may need to keep relocations for symbols satisfied by a
5634 dynamic library if we manage to avoid copy relocs for the
5635 symbol. */
5636 if ((bfd_link_pic (info)
5637 && (sec->flags & SEC_ALLOC) != 0
5638 && (r_type != R_SH_REL32
5639 || (h != NULL
5640 && (! info->symbolic
5641 || h->root.type == bfd_link_hash_defweak
5642 || !h->def_regular))))
5643 || (! bfd_link_pic (info)
5644 && (sec->flags & SEC_ALLOC) != 0
5645 && h != NULL
5646 && (h->root.type == bfd_link_hash_defweak
5647 || !h->def_regular)))
5648 {
5649 struct elf_dyn_relocs *p;
5650 struct elf_dyn_relocs **head;
5651
5652 if (htab->root.dynobj == NULL)
5653 htab->root.dynobj = abfd;
5654
5655 /* When creating a shared object, we must copy these
5656 reloc types into the output file. We create a reloc
5657 section in dynobj and make room for this reloc. */
5658 if (sreloc == NULL)
5659 {
5660 sreloc = _bfd_elf_make_dynamic_reloc_section
5661 (sec, htab->root.dynobj, 2, abfd, /*rela?*/ TRUE);
5662
5663 if (sreloc == NULL)
5664 return FALSE;
5665 }
5666
5667 /* If this is a global symbol, we count the number of
5668 relocations we need for this symbol. */
5669 if (h != NULL)
5670 head = &h->dyn_relocs;
5671 else
5672 {
5673 /* Track dynamic relocs needed for local syms too. */
5674 asection *s;
5675 void *vpp;
5676 Elf_Internal_Sym *isym;
5677
5678 isym = bfd_sym_from_r_symndx (&htab->root.sym_cache,
5679 abfd, r_symndx);
5680 if (isym == NULL)
5681 return FALSE;
5682
5683 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5684 if (s == NULL)
5685 s = sec;
5686
5687 vpp = &elf_section_data (s)->local_dynrel;
5688 head = (struct elf_dyn_relocs **) vpp;
5689 }
5690
5691 p = *head;
5692 if (p == NULL || p->sec != sec)
5693 {
5694 size_t amt = sizeof (*p);
5695 p = bfd_alloc (htab->root.dynobj, amt);
5696 if (p == NULL)
5697 return FALSE;
5698 p->next = *head;
5699 *head = p;
5700 p->sec = sec;
5701 p->count = 0;
5702 p->pc_count = 0;
5703 }
5704
5705 p->count += 1;
5706 if (r_type == R_SH_REL32)
5707 p->pc_count += 1;
5708 }
5709
5710 /* Allocate the fixup regardless of whether we need a relocation.
5711 If we end up generating the relocation, we'll unallocate the
5712 fixup. */
5713 if (htab->fdpic_p && !bfd_link_pic (info)
5714 && r_type == R_SH_DIR32
5715 && (sec->flags & SEC_ALLOC) != 0)
5716 htab->srofixup->size += 4;
5717 break;
5718
5719 case R_SH_TLS_LE_32:
5720 if (bfd_link_dll (info))
5721 {
5722 _bfd_error_handler
5723 (_("%pB: TLS local exec code cannot be linked into shared objects"),
5724 abfd);
5725 return FALSE;
5726 }
5727
5728 break;
5729
5730 case R_SH_TLS_LDO_32:
5731 /* Nothing to do. */
5732 break;
5733
5734 default:
5735 break;
5736 }
5737 }
5738
5739 return TRUE;
5740 }
5741
5742 #ifndef sh_elf_set_mach_from_flags
5743 static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5744
5745 static bfd_boolean
5746 sh_elf_set_mach_from_flags (bfd *abfd)
5747 {
5748 flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5749
5750 if (flags >= ARRAY_SIZE (sh_ef_bfd_table))
5751 return FALSE;
5752
5753 if (sh_ef_bfd_table[flags] == 0)
5754 return FALSE;
5755
5756 bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5757
5758 return TRUE;
5759 }
5760
5761
5762 /* Reverse table lookup for sh_ef_bfd_table[].
5763 Given a bfd MACH value from archures.c
5764 return the equivalent ELF flags from the table.
5765 Return -1 if no match is found. */
5766
5767 int
5768 sh_elf_get_flags_from_mach (unsigned long mach)
5769 {
5770 int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5771
5772 for (; i>0; i--)
5773 if (sh_ef_bfd_table[i] == mach)
5774 return i;
5775
5776 /* shouldn't get here */
5777 BFD_FAIL();
5778
5779 return -1;
5780 }
5781 #endif /* not sh_elf_set_mach_from_flags */
5782
5783 #ifndef sh_elf_copy_private_data
5784 /* Copy backend specific data from one object module to another */
5785
5786 static bfd_boolean
5787 sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5788 {
5789 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5790 return TRUE;
5791
5792 if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd))
5793 return FALSE;
5794
5795 return sh_elf_set_mach_from_flags (obfd);
5796 }
5797 #endif /* not sh_elf_copy_private_data */
5798
5799 #ifndef sh_elf_merge_private_data
5800
5801 /* This function returns the ELF architecture number that
5802 corresponds to the given arch_sh* flags. */
5803
5804 int
5805 sh_find_elf_flags (unsigned int arch_set)
5806 {
5807 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5808 unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5809
5810 return sh_elf_get_flags_from_mach (bfd_mach);
5811 }
5812
5813 /* Merge the architecture type of two BFD files, such that the
5814 resultant architecture supports all the features required
5815 by the two input BFDs.
5816 If the input BFDs are multually incompatible - i.e. one uses
5817 DSP while the other uses FPU - or there is no known architecture
5818 that fits the requirements then an error is emitted. */
5819
5820 static bfd_boolean
5821 sh_merge_bfd_arch (bfd *ibfd, struct bfd_link_info *info)
5822 {
5823 bfd *obfd = info->output_bfd;
5824 unsigned int old_arch, new_arch, merged_arch;
5825
5826 if (! _bfd_generic_verify_endian_match (ibfd, info))
5827 return FALSE;
5828
5829 old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
5830 new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));
5831
5832 merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);
5833
5834 if (!SH_VALID_CO_ARCH_SET (merged_arch))
5835 {
5836 _bfd_error_handler
5837 /* xgettext:c-format */
5838 (_("%pB: uses %s instructions while previous modules "
5839 "use %s instructions"),
5840 ibfd,
5841 SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
5842 SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
5843 bfd_set_error (bfd_error_bad_value);
5844 return FALSE;
5845 }
5846 else if (!SH_VALID_ARCH_SET (merged_arch))
5847 {
5848 _bfd_error_handler
5849 /* xgettext:c-format */
5850 (_("internal error: merge of architecture '%s' with "
5851 "architecture '%s' produced unknown architecture"),
5852 bfd_printable_name (obfd),
5853 bfd_printable_name (ibfd));
5854 bfd_set_error (bfd_error_bad_value);
5855 return FALSE;
5856 }
5857
5858 bfd_default_set_arch_mach (obfd, bfd_arch_sh,
5859 sh_get_bfd_mach_from_arch_set (merged_arch));
5860
5861 return TRUE;
5862 }
5863
5864 /* This routine initialises the elf flags when required and
5865 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5866
5867 static bfd_boolean
5868 sh_elf_merge_private_data (bfd *ibfd, struct bfd_link_info *info)
5869 {
5870 bfd *obfd = info->output_bfd;
5871
5872 /* FIXME: What should be checked when linking shared libraries? */
5873 if ((ibfd->flags & DYNAMIC) != 0)
5874 return TRUE;
5875
5876 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5877 return TRUE;
5878
5879 if (! elf_flags_init (obfd))
5880 {
5881 /* This happens when ld starts out with a 'blank' output file. */
5882 elf_flags_init (obfd) = TRUE;
5883 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
5884 sh_elf_set_mach_from_flags (obfd);
5885 if (elf_elfheader (obfd)->e_flags & EF_SH_FDPIC)
5886 elf_elfheader (obfd)->e_flags &= ~EF_SH_PIC;
5887 }
5888
5889 if (! sh_merge_bfd_arch (ibfd, info))
5890 {
5891 _bfd_error_handler (_("%pB: uses instructions which are incompatible "
5892 "with instructions used in previous modules"),
5893 ibfd);
5894 bfd_set_error (bfd_error_bad_value);
5895 return FALSE;
5896 }
5897
5898 elf_elfheader (obfd)->e_flags &= ~EF_SH_MACH_MASK;
5899 elf_elfheader (obfd)->e_flags |=
5900 sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
5901
5902 if (fdpic_object_p (ibfd) != fdpic_object_p (obfd))
5903 {
5904 _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"),
5905 ibfd);
5906 bfd_set_error (bfd_error_bad_value);
5907 return FALSE;
5908 }
5909
5910 return TRUE;
5911 }
5912 #endif /* not sh_elf_merge_private_data */
5913
5914 /* Override the generic function because we need to store sh_elf_obj_tdata
5915 as the specific tdata. We set also the machine architecture from flags
5916 here. */
5917
5918 static bfd_boolean
5919 sh_elf_object_p (bfd *abfd)
5920 {
5921 if (! sh_elf_set_mach_from_flags (abfd))
5922 return FALSE;
5923
5924 return (((elf_elfheader (abfd)->e_flags & EF_SH_FDPIC) != 0)
5925 == fdpic_object_p (abfd));
5926 }
5927
5928 /* Finish up dynamic symbol handling. We set the contents of various
5929 dynamic sections here. */
5930
5931 static bfd_boolean
5932 sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5933 struct elf_link_hash_entry *h,
5934 Elf_Internal_Sym *sym)
5935 {
5936 struct elf_sh_link_hash_table *htab;
5937
5938 htab = sh_elf_hash_table (info);
5939 if (htab == NULL)
5940 return FALSE;
5941
5942 if (h->plt.offset != (bfd_vma) -1)
5943 {
5944 asection *splt;
5945 asection *sgotplt;
5946 asection *srelplt;
5947
5948 bfd_vma plt_index;
5949 bfd_vma got_offset;
5950 Elf_Internal_Rela rel;
5951 bfd_byte *loc;
5952 const struct elf_sh_plt_info *plt_info;
5953
5954 /* This symbol has an entry in the procedure linkage table. Set
5955 it up. */
5956
5957 BFD_ASSERT (h->dynindx != -1);
5958
5959 splt = htab->root.splt;
5960 sgotplt = htab->root.sgotplt;
5961 srelplt = htab->root.srelplt;
5962 BFD_ASSERT (splt != NULL && sgotplt != NULL && srelplt != NULL);
5963
5964 /* Get the index in the procedure linkage table which
5965 corresponds to this symbol. This is the index of this symbol
5966 in all the symbols for which we are making plt entries. The
5967 first entry in the procedure linkage table is reserved. */
5968 plt_index = get_plt_index (htab->plt_info, h->plt.offset);
5969
5970 plt_info = htab->plt_info;
5971 if (plt_info->short_plt != NULL && plt_index <= MAX_SHORT_PLT)
5972 plt_info = plt_info->short_plt;
5973
5974 /* Get the offset into the .got table of the entry that
5975 corresponds to this function. */
5976 if (htab->fdpic_p)
5977 /* The offset must be relative to the GOT symbol, twelve bytes
5978 before the end of .got.plt. Each descriptor is eight
5979 bytes. */
5980 got_offset = plt_index * 8 + 12 - sgotplt->size;
5981 else
5982 /* Each .got entry is 4 bytes. The first three are
5983 reserved. */
5984 got_offset = (plt_index + 3) * 4;
5985
5986 #ifdef GOT_BIAS
5987 if (bfd_link_pic (info))
5988 got_offset -= GOT_BIAS;
5989 #endif
5990
5991 /* Fill in the entry in the procedure linkage table. */
5992 memcpy (splt->contents + h->plt.offset,
5993 plt_info->symbol_entry,
5994 plt_info->symbol_entry_size);
5995
5996 if (bfd_link_pic (info) || htab->fdpic_p)
5997 {
5998 if (plt_info->symbol_fields.got20)
5999 {
6000 bfd_reloc_status_type r;
6001 r = install_movi20_field (output_bfd, got_offset,
6002 splt->owner, splt, splt->contents,
6003 h->plt.offset
6004 + plt_info->symbol_fields.got_entry);
6005 BFD_ASSERT (r == bfd_reloc_ok);
6006 }
6007 else
6008 install_plt_field (output_bfd, FALSE, got_offset,
6009 (splt->contents
6010 + h->plt.offset
6011 + plt_info->symbol_fields.got_entry));
6012 }
6013 else
6014 {
6015 BFD_ASSERT (!plt_info->symbol_fields.got20);
6016
6017 install_plt_field (output_bfd, FALSE,
6018 (sgotplt->output_section->vma
6019 + sgotplt->output_offset
6020 + got_offset),
6021 (splt->contents
6022 + h->plt.offset
6023 + plt_info->symbol_fields.got_entry));
6024 if (htab->root.target_os == is_vxworks)
6025 {
6026 unsigned int reachable_plts, plts_per_4k;
6027 int distance;
6028
6029 /* Divide the PLT into groups. The first group contains
6030 REACHABLE_PLTS entries and the other groups contain
6031 PLTS_PER_4K entries. Entries in the first group can
6032 branch directly to .plt; those in later groups branch
6033 to the last element of the previous group. */
6034 /* ??? It would be better to create multiple copies of
6035 the common resolver stub. */
6036 reachable_plts = ((4096
6037 - plt_info->plt0_entry_size
6038 - (plt_info->symbol_fields.plt + 4))
6039 / plt_info->symbol_entry_size) + 1;
6040 plts_per_4k = (4096 / plt_info->symbol_entry_size);
6041 if (plt_index < reachable_plts)
6042 distance = -(h->plt.offset
6043 + plt_info->symbol_fields.plt);
6044 else
6045 distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
6046 * plt_info->symbol_entry_size);
6047
6048 /* Install the 'bra' with this offset. */
6049 bfd_put_16 (output_bfd,
6050 0xa000 | (0x0fff & ((distance - 4) / 2)),
6051 (splt->contents
6052 + h->plt.offset
6053 + plt_info->symbol_fields.plt));
6054 }
6055 else
6056 install_plt_field (output_bfd, TRUE,
6057 splt->output_section->vma + splt->output_offset,
6058 (splt->contents
6059 + h->plt.offset
6060 + plt_info->symbol_fields.plt));
6061 }
6062
6063 /* Make got_offset relative to the start of .got.plt. */
6064 #ifdef GOT_BIAS
6065 if (bfd_link_pic (info))
6066 got_offset += GOT_BIAS;
6067 #endif
6068 if (htab->fdpic_p)
6069 got_offset = plt_index * 8;
6070
6071 if (plt_info->symbol_fields.reloc_offset != MINUS_ONE)
6072 install_plt_field (output_bfd, FALSE,
6073 plt_index * sizeof (Elf32_External_Rela),
6074 (splt->contents
6075 + h->plt.offset
6076 + plt_info->symbol_fields.reloc_offset));
6077
6078 /* Fill in the entry in the global offset table. */
6079 bfd_put_32 (output_bfd,
6080 (splt->output_section->vma
6081 + splt->output_offset
6082 + h->plt.offset
6083 + plt_info->symbol_resolve_offset),
6084 sgotplt->contents + got_offset);
6085 if (htab->fdpic_p)
6086 bfd_put_32 (output_bfd,
6087 sh_elf_osec_to_segment (output_bfd, splt->output_section),
6088 sgotplt->contents + got_offset + 4);
6089
6090 /* Fill in the entry in the .rela.plt section. */
6091 rel.r_offset = (sgotplt->output_section->vma
6092 + sgotplt->output_offset
6093 + got_offset);
6094 if (htab->fdpic_p)
6095 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_FUNCDESC_VALUE);
6096 else
6097 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
6098 rel.r_addend = 0;
6099 #ifdef GOT_BIAS
6100 rel.r_addend = GOT_BIAS;
6101 #endif
6102 loc = srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
6103 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6104
6105 if (htab->root.target_os == is_vxworks && !bfd_link_pic (info))
6106 {
6107 /* Create the .rela.plt.unloaded relocations for this PLT entry.
6108 Begin by pointing LOC to the first such relocation. */
6109 loc = (htab->srelplt2->contents
6110 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
6111
6112 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
6113 for the PLT entry's pointer to the .got.plt entry. */
6114 rel.r_offset = (splt->output_section->vma
6115 + splt->output_offset
6116 + h->plt.offset
6117 + plt_info->symbol_fields.got_entry);
6118 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6119 rel.r_addend = got_offset;
6120 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6121 loc += sizeof (Elf32_External_Rela);
6122
6123 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
6124 the .got.plt entry, which initially points to .plt. */
6125 rel.r_offset = (sgotplt->output_section->vma
6126 + sgotplt->output_offset
6127 + got_offset);
6128 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
6129 rel.r_addend = 0;
6130 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6131 }
6132
6133 if (!h->def_regular)
6134 {
6135 /* Mark the symbol as undefined, rather than as defined in
6136 the .plt section. Leave the value alone. */
6137 sym->st_shndx = SHN_UNDEF;
6138 }
6139 }
6140
6141 if (h->got.offset != (bfd_vma) -1
6142 && sh_elf_hash_entry (h)->got_type != GOT_TLS_GD
6143 && sh_elf_hash_entry (h)->got_type != GOT_TLS_IE
6144 && sh_elf_hash_entry (h)->got_type != GOT_FUNCDESC)
6145 {
6146 asection *sgot;
6147 asection *srelgot;
6148 Elf_Internal_Rela rel;
6149 bfd_byte *loc;
6150
6151 /* This symbol has an entry in the global offset table. Set it
6152 up. */
6153
6154 sgot = htab->root.sgot;
6155 srelgot = htab->root.srelgot;
6156 BFD_ASSERT (sgot != NULL && srelgot != NULL);
6157
6158 rel.r_offset = (sgot->output_section->vma
6159 + sgot->output_offset
6160 + (h->got.offset &~ (bfd_vma) 1));
6161
6162 /* If this is a static link, or it is a -Bsymbolic link and the
6163 symbol is defined locally or was forced to be local because
6164 of a version file, we just want to emit a RELATIVE reloc.
6165 The entry in the global offset table will already have been
6166 initialized in the relocate_section function. */
6167 if (bfd_link_pic (info)
6168 && SYMBOL_REFERENCES_LOCAL (info, h))
6169 {
6170 if (htab->fdpic_p)
6171 {
6172 asection *sec = h->root.u.def.section;
6173 int dynindx
6174 = elf_section_data (sec->output_section)->dynindx;
6175
6176 rel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
6177 rel.r_addend = (h->root.u.def.value
6178 + h->root.u.def.section->output_offset);
6179 }
6180 else
6181 {
6182 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
6183 rel.r_addend = (h->root.u.def.value
6184 + h->root.u.def.section->output_section->vma
6185 + h->root.u.def.section->output_offset);
6186 }
6187 }
6188 else
6189 {
6190 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
6191 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
6192 rel.r_addend = 0;
6193 }
6194
6195 loc = srelgot->contents;
6196 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
6197 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6198 }
6199
6200 if (h->needs_copy)
6201 {
6202 asection *s;
6203 Elf_Internal_Rela rel;
6204 bfd_byte *loc;
6205
6206 /* This symbol needs a copy reloc. Set it up. */
6207
6208 BFD_ASSERT (h->dynindx != -1
6209 && (h->root.type == bfd_link_hash_defined
6210 || h->root.type == bfd_link_hash_defweak));
6211
6212 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
6213 BFD_ASSERT (s != NULL);
6214
6215 rel.r_offset = (h->root.u.def.value
6216 + h->root.u.def.section->output_section->vma
6217 + h->root.u.def.section->output_offset);
6218 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
6219 rel.r_addend = 0;
6220 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6221 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6222 }
6223
6224 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
6225 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
6226 ".got" section. */
6227 if (h == htab->root.hdynamic
6228 || (htab->root.target_os != is_vxworks && h == htab->root.hgot))
6229 sym->st_shndx = SHN_ABS;
6230
6231 return TRUE;
6232 }
6233
6234 /* Finish up the dynamic sections. */
6235
6236 static bfd_boolean
6237 sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
6238 {
6239 struct elf_sh_link_hash_table *htab;
6240 asection *sgotplt;
6241 asection *sdyn;
6242
6243 htab = sh_elf_hash_table (info);
6244 if (htab == NULL)
6245 return FALSE;
6246
6247 sgotplt = htab->root.sgotplt;
6248 sdyn = bfd_get_linker_section (htab->root.dynobj, ".dynamic");
6249
6250 if (htab->root.dynamic_sections_created)
6251 {
6252 asection *splt;
6253 Elf32_External_Dyn *dyncon, *dynconend;
6254
6255 BFD_ASSERT (sgotplt != NULL && sdyn != NULL);
6256
6257 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6258 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6259 for (; dyncon < dynconend; dyncon++)
6260 {
6261 Elf_Internal_Dyn dyn;
6262 asection *s;
6263
6264 bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
6265
6266 switch (dyn.d_tag)
6267 {
6268 default:
6269 if (htab->root.target_os == is_vxworks
6270 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
6271 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6272 break;
6273
6274 case DT_PLTGOT:
6275 BFD_ASSERT (htab->root.hgot != NULL);
6276 s = htab->root.hgot->root.u.def.section;
6277 dyn.d_un.d_ptr = htab->root.hgot->root.u.def.value
6278 + s->output_section->vma + s->output_offset;
6279 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6280 break;
6281
6282 case DT_JMPREL:
6283 s = htab->root.srelplt->output_section;
6284 BFD_ASSERT (s != NULL);
6285 dyn.d_un.d_ptr = s->vma;
6286 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6287 break;
6288
6289 case DT_PLTRELSZ:
6290 s = htab->root.srelplt->output_section;
6291 BFD_ASSERT (s != NULL);
6292 dyn.d_un.d_val = s->size;
6293 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6294 break;
6295 }
6296 }
6297
6298 /* Fill in the first entry in the procedure linkage table. */
6299 splt = htab->root.splt;
6300 if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
6301 {
6302 unsigned int i;
6303
6304 memcpy (splt->contents,
6305 htab->plt_info->plt0_entry,
6306 htab->plt_info->plt0_entry_size);
6307 for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
6308 if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
6309 install_plt_field (output_bfd, FALSE,
6310 (sgotplt->output_section->vma
6311 + sgotplt->output_offset
6312 + (i * 4)),
6313 (splt->contents
6314 + htab->plt_info->plt0_got_fields[i]));
6315
6316 if (htab->root.target_os == is_vxworks)
6317 {
6318 /* Finalize the .rela.plt.unloaded contents. */
6319 Elf_Internal_Rela rel;
6320 bfd_byte *loc;
6321
6322 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
6323 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
6324 loc = htab->srelplt2->contents;
6325 rel.r_offset = (splt->output_section->vma
6326 + splt->output_offset
6327 + htab->plt_info->plt0_got_fields[2]);
6328 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6329 rel.r_addend = 8;
6330 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6331 loc += sizeof (Elf32_External_Rela);
6332
6333 /* Fix up the remaining .rela.plt.unloaded relocations.
6334 They may have the wrong symbol index for _G_O_T_ or
6335 _P_L_T_ depending on the order in which symbols were
6336 output. */
6337 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
6338 {
6339 /* The PLT entry's pointer to the .got.plt slot. */
6340 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6341 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
6342 R_SH_DIR32);
6343 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6344 loc += sizeof (Elf32_External_Rela);
6345
6346 /* The .got.plt slot's pointer to .plt. */
6347 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6348 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
6349 R_SH_DIR32);
6350 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6351 loc += sizeof (Elf32_External_Rela);
6352 }
6353 }
6354
6355 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6356 really seem like the right value. */
6357 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
6358 }
6359 }
6360
6361 /* Fill in the first three entries in the global offset table. */
6362 if (sgotplt && sgotplt->size > 0 && !htab->fdpic_p)
6363 {
6364 if (sdyn == NULL)
6365 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents);
6366 else
6367 bfd_put_32 (output_bfd,
6368 sdyn->output_section->vma + sdyn->output_offset,
6369 sgotplt->contents);
6370 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4);
6371 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8);
6372 }
6373
6374 if (sgotplt && sgotplt->size > 0)
6375 elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4;
6376
6377 /* At the very end of the .rofixup section is a pointer to the GOT. */
6378 if (htab->fdpic_p && htab->srofixup != NULL)
6379 {
6380 struct elf_link_hash_entry *hgot = htab->root.hgot;
6381 bfd_vma got_value = hgot->root.u.def.value
6382 + hgot->root.u.def.section->output_section->vma
6383 + hgot->root.u.def.section->output_offset;
6384
6385 sh_elf_add_rofixup (output_bfd, htab->srofixup, got_value);
6386
6387 /* Make sure we allocated and generated the same number of fixups. */
6388 BFD_ASSERT (htab->srofixup->reloc_count * 4 == htab->srofixup->size);
6389 }
6390
6391 if (htab->srelfuncdesc)
6392 BFD_ASSERT (htab->srelfuncdesc->reloc_count * sizeof (Elf32_External_Rela)
6393 == htab->srelfuncdesc->size);
6394
6395 if (htab->root.srelgot)
6396 BFD_ASSERT (htab->root.srelgot->reloc_count * sizeof (Elf32_External_Rela)
6397 == htab->root.srelgot->size);
6398
6399 return TRUE;
6400 }
6401
6402 static enum elf_reloc_type_class
6403 sh_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
6404 const asection *rel_sec ATTRIBUTE_UNUSED,
6405 const Elf_Internal_Rela *rela)
6406 {
6407 switch ((int) ELF32_R_TYPE (rela->r_info))
6408 {
6409 case R_SH_RELATIVE:
6410 return reloc_class_relative;
6411 case R_SH_JMP_SLOT:
6412 return reloc_class_plt;
6413 case R_SH_COPY:
6414 return reloc_class_copy;
6415 default:
6416 return reloc_class_normal;
6417 }
6418 }
6419
6420 #if !defined SH_TARGET_ALREADY_DEFINED
6421 /* Support for Linux core dump NOTE sections. */
6422
6423 static bfd_boolean
6424 elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
6425 {
6426 int offset;
6427 unsigned int size;
6428
6429 switch (note->descsz)
6430 {
6431 default:
6432 return FALSE;
6433
6434 case 168: /* Linux/SH */
6435 /* pr_cursig */
6436 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
6437
6438 /* pr_pid */
6439 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
6440
6441 /* pr_reg */
6442 offset = 72;
6443 size = 92;
6444
6445 break;
6446 }
6447
6448 /* Make a ".reg/999" section. */
6449 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
6450 size, note->descpos + offset);
6451 }
6452
6453 static bfd_boolean
6454 elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
6455 {
6456 switch (note->descsz)
6457 {
6458 default:
6459 return FALSE;
6460
6461 case 124: /* Linux/SH elf_prpsinfo */
6462 elf_tdata (abfd)->core->program
6463 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
6464 elf_tdata (abfd)->core->command
6465 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
6466 }
6467
6468 /* Note that for some reason, a spurious space is tacked
6469 onto the end of the args in some (at least one anyway)
6470 implementations, so strip it off if it exists. */
6471
6472 {
6473 char *command = elf_tdata (abfd)->core->command;
6474 int n = strlen (command);
6475
6476 if (0 < n && command[n - 1] == ' ')
6477 command[n - 1] = '\0';
6478 }
6479
6480 return TRUE;
6481 }
6482 #endif /* not SH_TARGET_ALREADY_DEFINED */
6483
6484
6485 /* Return address for Ith PLT stub in section PLT, for relocation REL
6486 or (bfd_vma) -1 if it should not be included. */
6487
6488 static bfd_vma
6489 sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6490 const arelent *rel ATTRIBUTE_UNUSED)
6491 {
6492 const struct elf_sh_plt_info *plt_info;
6493
6494 plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6495 return plt->vma + get_plt_offset (plt_info, i);
6496 }
6497
6498 /* Decide whether to attempt to turn absptr or lsda encodings in
6499 shared libraries into pcrel within the given input section. */
6500
6501 static bfd_boolean
6502 sh_elf_use_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED,
6503 struct bfd_link_info *info,
6504 asection *eh_frame_section ATTRIBUTE_UNUSED)
6505 {
6506 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6507
6508 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
6509 if (htab->fdpic_p)
6510 return FALSE;
6511
6512 return TRUE;
6513 }
6514
6515 /* Adjust the contents of an eh_frame_hdr section before they're output. */
6516
6517 static bfd_byte
6518 sh_elf_encode_eh_address (bfd *abfd,
6519 struct bfd_link_info *info,
6520 asection *osec, bfd_vma offset,
6521 asection *loc_sec, bfd_vma loc_offset,
6522 bfd_vma *encoded)
6523 {
6524 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6525 struct elf_link_hash_entry *h;
6526
6527 if (!htab->fdpic_p)
6528 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, loc_sec,
6529 loc_offset, encoded);
6530
6531 h = htab->root.hgot;
6532 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
6533
6534 if (! h || (sh_elf_osec_to_segment (abfd, osec)
6535 == sh_elf_osec_to_segment (abfd, loc_sec->output_section)))
6536 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
6537 loc_sec, loc_offset, encoded);
6538
6539 BFD_ASSERT (sh_elf_osec_to_segment (abfd, osec)
6540 == (sh_elf_osec_to_segment
6541 (abfd, h->root.u.def.section->output_section)));
6542
6543 *encoded = osec->vma + offset
6544 - (h->root.u.def.value
6545 + h->root.u.def.section->output_section->vma
6546 + h->root.u.def.section->output_offset);
6547
6548 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
6549 }
6550
6551 /* Determine the size of the header of for the GOT section. */
6552
6553 static bfd_vma
6554 sh_elf_got_header_size (struct bfd_link_info* info ATTRIBUTE_UNUSED)
6555 {
6556 return 12;
6557 }
6558
6559 #if !defined SH_TARGET_ALREADY_DEFINED
6560 #define TARGET_BIG_SYM sh_elf32_vec
6561 #define TARGET_BIG_NAME "elf32-sh"
6562 #define TARGET_LITTLE_SYM sh_elf32_le_vec
6563 #define TARGET_LITTLE_NAME "elf32-shl"
6564 #endif
6565
6566 #define ELF_ARCH bfd_arch_sh
6567 #define ELF_TARGET_ID SH_ELF_DATA
6568 #define ELF_MACHINE_CODE EM_SH
6569 #ifdef __QNXTARGET__
6570 #define ELF_MAXPAGESIZE 0x1000
6571 #else
6572 #define ELF_MAXPAGESIZE 0x80
6573 #endif
6574
6575 #define elf_symbol_leading_char '_'
6576
6577 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6578 #define bfd_elf32_bfd_reloc_name_lookup \
6579 sh_elf_reloc_name_lookup
6580 #define elf_info_to_howto sh_elf_info_to_howto
6581 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6582 #define elf_backend_relocate_section sh_elf_relocate_section
6583 #define bfd_elf32_bfd_get_relocated_section_contents \
6584 sh_elf_get_relocated_section_contents
6585 #define bfd_elf32_mkobject sh_elf_mkobject
6586 #define elf_backend_object_p sh_elf_object_p
6587 #define bfd_elf32_bfd_copy_private_bfd_data \
6588 sh_elf_copy_private_data
6589 #define bfd_elf32_bfd_merge_private_bfd_data \
6590 sh_elf_merge_private_data
6591
6592 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6593 #define elf_backend_check_relocs sh_elf_check_relocs
6594 #define elf_backend_copy_indirect_symbol \
6595 sh_elf_copy_indirect_symbol
6596 #define elf_backend_create_dynamic_sections \
6597 sh_elf_create_dynamic_sections
6598 #define bfd_elf32_bfd_link_hash_table_create \
6599 sh_elf_link_hash_table_create
6600 #define elf_backend_adjust_dynamic_symbol \
6601 sh_elf_adjust_dynamic_symbol
6602 #define elf_backend_always_size_sections \
6603 sh_elf_always_size_sections
6604 #define elf_backend_size_dynamic_sections \
6605 sh_elf_size_dynamic_sections
6606 #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
6607 #define elf_backend_finish_dynamic_symbol \
6608 sh_elf_finish_dynamic_symbol
6609 #define elf_backend_finish_dynamic_sections \
6610 sh_elf_finish_dynamic_sections
6611 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6612 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6613 #define elf_backend_can_make_relative_eh_frame \
6614 sh_elf_use_relative_eh_frame
6615 #define elf_backend_can_make_lsda_relative_eh_frame \
6616 sh_elf_use_relative_eh_frame
6617 #define elf_backend_encode_eh_address \
6618 sh_elf_encode_eh_address
6619
6620 #define elf_backend_stack_align 8
6621 #define elf_backend_can_gc_sections 1
6622 #define elf_backend_can_refcount 1
6623 #define elf_backend_want_got_plt 1
6624 #define elf_backend_plt_readonly 1
6625 #define elf_backend_want_plt_sym 0
6626 #define elf_backend_got_header_size sh_elf_got_header_size
6627 #define elf_backend_dtrel_excludes_plt 1
6628
6629 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
6630
6631 #if !defined SH_TARGET_ALREADY_DEFINED
6632
6633 #include "elf32-target.h"
6634
6635 /* NetBSD support. */
6636 #undef TARGET_BIG_SYM
6637 #define TARGET_BIG_SYM sh_elf32_nbsd_vec
6638 #undef TARGET_BIG_NAME
6639 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6640 #undef TARGET_LITTLE_SYM
6641 #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
6642 #undef TARGET_LITTLE_NAME
6643 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6644 #undef ELF_MAXPAGESIZE
6645 #define ELF_MAXPAGESIZE 0x10000
6646 #undef ELF_COMMONPAGESIZE
6647 #undef elf_symbol_leading_char
6648 #define elf_symbol_leading_char 0
6649 #undef elf32_bed
6650 #define elf32_bed elf32_sh_nbsd_bed
6651
6652 #include "elf32-target.h"
6653
6654
6655 /* Linux support. */
6656 #undef TARGET_BIG_SYM
6657 #define TARGET_BIG_SYM sh_elf32_linux_be_vec
6658 #undef TARGET_BIG_NAME
6659 #define TARGET_BIG_NAME "elf32-shbig-linux"
6660 #undef TARGET_LITTLE_SYM
6661 #define TARGET_LITTLE_SYM sh_elf32_linux_vec
6662 #undef TARGET_LITTLE_NAME
6663 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6664 #undef ELF_COMMONPAGESIZE
6665 #define ELF_COMMONPAGESIZE 0x1000
6666
6667 #undef elf_backend_grok_prstatus
6668 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6669 #undef elf_backend_grok_psinfo
6670 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6671 #undef elf32_bed
6672 #define elf32_bed elf32_sh_lin_bed
6673
6674 #include "elf32-target.h"
6675
6676
6677 /* FDPIC support. */
6678 #undef TARGET_BIG_SYM
6679 #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
6680 #undef TARGET_BIG_NAME
6681 #define TARGET_BIG_NAME "elf32-shbig-fdpic"
6682 #undef TARGET_LITTLE_SYM
6683 #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
6684 #undef TARGET_LITTLE_NAME
6685 #define TARGET_LITTLE_NAME "elf32-sh-fdpic"
6686
6687 #undef elf32_bed
6688 #define elf32_bed elf32_sh_fd_bed
6689
6690 #include "elf32-target.h"
6691
6692 /* VxWorks support. */
6693 #undef TARGET_BIG_SYM
6694 #define TARGET_BIG_SYM sh_elf32_vxworks_vec
6695 #undef TARGET_BIG_NAME
6696 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6697 #undef TARGET_LITTLE_SYM
6698 #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
6699 #undef TARGET_LITTLE_NAME
6700 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6701 #undef elf32_bed
6702 #define elf32_bed elf32_sh_vxworks_bed
6703
6704 #undef elf_backend_want_plt_sym
6705 #define elf_backend_want_plt_sym 1
6706 #undef elf_symbol_leading_char
6707 #define elf_symbol_leading_char '_'
6708 #define elf_backend_want_got_underscore 1
6709 #undef elf_backend_grok_prstatus
6710 #undef elf_backend_grok_psinfo
6711 #undef elf_backend_add_symbol_hook
6712 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6713 #undef elf_backend_link_output_symbol_hook
6714 #define elf_backend_link_output_symbol_hook \
6715 elf_vxworks_link_output_symbol_hook
6716 #undef elf_backend_emit_relocs
6717 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6718 #undef elf_backend_final_write_processing
6719 #define elf_backend_final_write_processing \
6720 elf_vxworks_final_write_processing
6721 #undef ELF_MAXPAGESIZE
6722 #define ELF_MAXPAGESIZE 0x1000
6723 #undef ELF_COMMONPAGESIZE
6724
6725 #undef ELF_TARGET_OS
6726 #define ELF_TARGET_OS is_vxworks
6727
6728 #include "elf32-target.h"
6729
6730 #endif /* not SH_TARGET_ALREADY_DEFINED */