[tdep/s390] Fix Wmaybe-uninitialized in s390_displaced_step_fixup
[deliverable/binutils-gdb.git] / bfd / elf32-sh.c
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 *sdynbss;
2164 asection *srelbss;
2165 asection *sfuncdesc;
2166 asection *srelfuncdesc;
2167 asection *srofixup;
2168
2169 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2170 asection *srelplt2;
2171
2172 /* Small local sym cache. */
2173 struct sym_cache sym_cache;
2174
2175 /* A counter or offset to track a TLS got entry. */
2176 union
2177 {
2178 bfd_signed_vma refcount;
2179 bfd_vma offset;
2180 } tls_ldm_got;
2181
2182 /* The type of PLT to use. */
2183 const struct elf_sh_plt_info *plt_info;
2184
2185 /* True if the target system uses FDPIC. */
2186 bfd_boolean fdpic_p;
2187 };
2188
2189 /* Traverse an sh ELF linker hash table. */
2190
2191 #define sh_elf_link_hash_traverse(table, func, info) \
2192 (elf_link_hash_traverse \
2193 (&(table)->root, \
2194 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2195 (info)))
2196
2197 /* Get the sh ELF linker hash table from a link_info structure. */
2198
2199 #define sh_elf_hash_table(p) \
2200 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2201 == SH_ELF_DATA ? ((struct elf_sh_link_hash_table *) ((p)->hash)) : NULL)
2202
2203 /* Create an entry in an sh ELF linker hash table. */
2204
2205 static struct bfd_hash_entry *
2206 sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2207 struct bfd_hash_table *table,
2208 const char *string)
2209 {
2210 struct elf_sh_link_hash_entry *ret =
2211 (struct elf_sh_link_hash_entry *) entry;
2212
2213 /* Allocate the structure if it has not already been allocated by a
2214 subclass. */
2215 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2216 ret = ((struct elf_sh_link_hash_entry *)
2217 bfd_hash_allocate (table,
2218 sizeof (struct elf_sh_link_hash_entry)));
2219 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2220 return (struct bfd_hash_entry *) ret;
2221
2222 /* Call the allocation method of the superclass. */
2223 ret = ((struct elf_sh_link_hash_entry *)
2224 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2225 table, string));
2226 if (ret != (struct elf_sh_link_hash_entry *) NULL)
2227 {
2228 ret->gotplt_refcount = 0;
2229 ret->funcdesc.refcount = 0;
2230 ret->abs_funcdesc_refcount = 0;
2231 ret->got_type = GOT_UNKNOWN;
2232 }
2233
2234 return (struct bfd_hash_entry *) ret;
2235 }
2236
2237 /* Create an sh ELF linker hash table. */
2238
2239 static struct bfd_link_hash_table *
2240 sh_elf_link_hash_table_create (bfd *abfd)
2241 {
2242 struct elf_sh_link_hash_table *ret;
2243 size_t amt = sizeof (struct elf_sh_link_hash_table);
2244
2245 ret = (struct elf_sh_link_hash_table *) bfd_zmalloc (amt);
2246 if (ret == (struct elf_sh_link_hash_table *) NULL)
2247 return NULL;
2248
2249 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2250 sh_elf_link_hash_newfunc,
2251 sizeof (struct elf_sh_link_hash_entry),
2252 SH_ELF_DATA))
2253 {
2254 free (ret);
2255 return NULL;
2256 }
2257
2258 if (fdpic_object_p (abfd))
2259 {
2260 ret->root.dt_pltgot_required = TRUE;
2261 ret->fdpic_p = TRUE;
2262 }
2263
2264 return &ret->root.root;
2265 }
2266
2267 static bfd_boolean
2268 sh_elf_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2269 struct bfd_link_info *info, asection *p)
2270 {
2271 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
2272
2273 /* Non-FDPIC binaries do not need dynamic symbols for sections. */
2274 if (!htab->fdpic_p)
2275 return TRUE;
2276
2277 /* We need dynamic symbols for every section, since segments can
2278 relocate independently. */
2279 switch (elf_section_data (p)->this_hdr.sh_type)
2280 {
2281 case SHT_PROGBITS:
2282 case SHT_NOBITS:
2283 /* If sh_type is yet undecided, assume it could be
2284 SHT_PROGBITS/SHT_NOBITS. */
2285 case SHT_NULL:
2286 return FALSE;
2287
2288 /* There shouldn't be section relative relocations
2289 against any other section. */
2290 default:
2291 return TRUE;
2292 }
2293 }
2294
2295 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2296 shortcuts to them in our hash table. */
2297
2298 static bfd_boolean
2299 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2300 {
2301 struct elf_sh_link_hash_table *htab;
2302
2303 if (! _bfd_elf_create_got_section (dynobj, info))
2304 return FALSE;
2305
2306 htab = sh_elf_hash_table (info);
2307 if (htab == NULL)
2308 return FALSE;
2309
2310 htab->sfuncdesc = bfd_make_section_anyway_with_flags (dynobj, ".got.funcdesc",
2311 (SEC_ALLOC | SEC_LOAD
2312 | SEC_HAS_CONTENTS
2313 | SEC_IN_MEMORY
2314 | SEC_LINKER_CREATED));
2315 if (htab->sfuncdesc == NULL
2316 || !bfd_set_section_alignment (htab->sfuncdesc, 2))
2317 return FALSE;
2318
2319 htab->srelfuncdesc = bfd_make_section_anyway_with_flags (dynobj,
2320 ".rela.got.funcdesc",
2321 (SEC_ALLOC | SEC_LOAD
2322 | SEC_HAS_CONTENTS
2323 | SEC_IN_MEMORY
2324 | SEC_LINKER_CREATED
2325 | SEC_READONLY));
2326 if (htab->srelfuncdesc == NULL
2327 || !bfd_set_section_alignment (htab->srelfuncdesc, 2))
2328 return FALSE;
2329
2330 /* Also create .rofixup. */
2331 htab->srofixup = bfd_make_section_anyway_with_flags (dynobj, ".rofixup",
2332 (SEC_ALLOC | SEC_LOAD
2333 | SEC_HAS_CONTENTS
2334 | SEC_IN_MEMORY
2335 | SEC_LINKER_CREATED
2336 | SEC_READONLY));
2337 if (htab->srofixup == NULL
2338 || !bfd_set_section_alignment (htab->srofixup, 2))
2339 return FALSE;
2340
2341 return TRUE;
2342 }
2343
2344 /* Create dynamic sections when linking against a dynamic object. */
2345
2346 static bfd_boolean
2347 sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2348 {
2349 struct elf_sh_link_hash_table *htab;
2350 flagword flags, pltflags;
2351 asection *s;
2352 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2353 int ptralign = 0;
2354
2355 switch (bed->s->arch_size)
2356 {
2357 case 32:
2358 ptralign = 2;
2359 break;
2360
2361 case 64:
2362 ptralign = 3;
2363 break;
2364
2365 default:
2366 bfd_set_error (bfd_error_bad_value);
2367 return FALSE;
2368 }
2369
2370 htab = sh_elf_hash_table (info);
2371 if (htab == NULL)
2372 return FALSE;
2373
2374 if (htab->root.dynamic_sections_created)
2375 return TRUE;
2376
2377 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2378 .rel[a].bss sections. */
2379
2380 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2381 | SEC_LINKER_CREATED);
2382
2383 pltflags = flags;
2384 pltflags |= SEC_CODE;
2385 if (bed->plt_not_loaded)
2386 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2387 if (bed->plt_readonly)
2388 pltflags |= SEC_READONLY;
2389
2390 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
2391 htab->root.splt = s;
2392 if (s == NULL
2393 || !bfd_set_section_alignment (s, bed->plt_alignment))
2394 return FALSE;
2395
2396 if (bed->want_plt_sym)
2397 {
2398 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2399 .plt section. */
2400 struct elf_link_hash_entry *h;
2401 struct bfd_link_hash_entry *bh = NULL;
2402
2403 if (! (_bfd_generic_link_add_one_symbol
2404 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2405 (bfd_vma) 0, (const char *) NULL, FALSE,
2406 get_elf_backend_data (abfd)->collect, &bh)))
2407 return FALSE;
2408
2409 h = (struct elf_link_hash_entry *) bh;
2410 h->def_regular = 1;
2411 h->type = STT_OBJECT;
2412 htab->root.hplt = h;
2413
2414 if (bfd_link_pic (info)
2415 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2416 return FALSE;
2417 }
2418
2419 s = bfd_make_section_anyway_with_flags (abfd,
2420 bed->default_use_rela_p
2421 ? ".rela.plt" : ".rel.plt",
2422 flags | SEC_READONLY);
2423 htab->root.srelplt = s;
2424 if (s == NULL
2425 || !bfd_set_section_alignment (s, ptralign))
2426 return FALSE;
2427
2428 if (htab->root.sgot == NULL
2429 && !create_got_section (abfd, info))
2430 return FALSE;
2431
2432 if (bed->want_dynbss)
2433 {
2434 /* The .dynbss section is a place to put symbols which are defined
2435 by dynamic objects, are referenced by regular objects, and are
2436 not functions. We must allocate space for them in the process
2437 image and use a R_*_COPY reloc to tell the dynamic linker to
2438 initialize them at run time. The linker script puts the .dynbss
2439 section into the .bss section of the final image. */
2440 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
2441 SEC_ALLOC | SEC_LINKER_CREATED);
2442 htab->sdynbss = s;
2443 if (s == NULL)
2444 return FALSE;
2445
2446 /* The .rel[a].bss section holds copy relocs. This section is not
2447 normally needed. We need to create it here, though, so that the
2448 linker will map it to an output section. We can't just create it
2449 only if we need it, because we will not know whether we need it
2450 until we have seen all the input files, and the first time the
2451 main linker code calls BFD after examining all the input files
2452 (size_dynamic_sections) the input sections have already been
2453 mapped to the output sections. If the section turns out not to
2454 be needed, we can discard it later. We will never need this
2455 section when generating a shared object, since they do not use
2456 copy relocs. */
2457 if (! bfd_link_pic (info))
2458 {
2459 s = bfd_make_section_anyway_with_flags (abfd,
2460 (bed->default_use_rela_p
2461 ? ".rela.bss" : ".rel.bss"),
2462 flags | SEC_READONLY);
2463 htab->srelbss = s;
2464 if (s == NULL
2465 || !bfd_set_section_alignment (s, ptralign))
2466 return FALSE;
2467 }
2468 }
2469
2470 if (htab->root.target_os == is_vxworks)
2471 {
2472 if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2473 return FALSE;
2474 }
2475
2476 return TRUE;
2477 }
2478 \f
2479 /* Adjust a symbol defined by a dynamic object and referenced by a
2480 regular object. The current definition is in some section of the
2481 dynamic object, but we're not including those sections. We have to
2482 change the definition to something the rest of the link can
2483 understand. */
2484
2485 static bfd_boolean
2486 sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2487 struct elf_link_hash_entry *h)
2488 {
2489 struct elf_sh_link_hash_table *htab;
2490 asection *s;
2491
2492 htab = sh_elf_hash_table (info);
2493 if (htab == NULL)
2494 return FALSE;
2495
2496 /* Make sure we know what is going on here. */
2497 BFD_ASSERT (htab->root.dynobj != NULL
2498 && (h->needs_plt
2499 || h->is_weakalias
2500 || (h->def_dynamic
2501 && h->ref_regular
2502 && !h->def_regular)));
2503
2504 /* If this is a function, put it in the procedure linkage table. We
2505 will fill in the contents of the procedure linkage table later,
2506 when we know the address of the .got section. */
2507 if (h->type == STT_FUNC
2508 || h->needs_plt)
2509 {
2510 if (h->plt.refcount <= 0
2511 || SYMBOL_CALLS_LOCAL (info, h)
2512 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2513 && h->root.type == bfd_link_hash_undefweak))
2514 {
2515 /* This case can occur if we saw a PLT reloc in an input
2516 file, but the symbol was never referred to by a dynamic
2517 object. In such a case, we don't actually need to build
2518 a procedure linkage table, and we can just do a REL32
2519 reloc instead. */
2520 h->plt.offset = (bfd_vma) -1;
2521 h->needs_plt = 0;
2522 }
2523
2524 return TRUE;
2525 }
2526 else
2527 h->plt.offset = (bfd_vma) -1;
2528
2529 /* If this is a weak symbol, and there is a real definition, the
2530 processor independent code will have arranged for us to see the
2531 real definition first, and we can just use the same value. */
2532 if (h->is_weakalias)
2533 {
2534 struct elf_link_hash_entry *def = weakdef (h);
2535 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2536 h->root.u.def.section = def->root.u.def.section;
2537 h->root.u.def.value = def->root.u.def.value;
2538 if (info->nocopyreloc)
2539 h->non_got_ref = def->non_got_ref;
2540 return TRUE;
2541 }
2542
2543 /* This is a reference to a symbol defined by a dynamic object which
2544 is not a function. */
2545
2546 /* If we are creating a shared library, we must presume that the
2547 only references to the symbol are via the global offset table.
2548 For such cases we need not do anything here; the relocations will
2549 be handled correctly by relocate_section. */
2550 if (bfd_link_pic (info))
2551 return TRUE;
2552
2553 /* If there are no references to this symbol that do not use the
2554 GOT, we don't need to generate a copy reloc. */
2555 if (!h->non_got_ref)
2556 return TRUE;
2557
2558 /* If -z nocopyreloc was given, we won't generate them either. */
2559 if (0 && info->nocopyreloc)
2560 {
2561 h->non_got_ref = 0;
2562 return TRUE;
2563 }
2564
2565 /* If we don't find any dynamic relocs in read-only sections, then
2566 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2567 if (0 && !_bfd_elf_readonly_dynrelocs (h))
2568 {
2569 h->non_got_ref = 0;
2570 return TRUE;
2571 }
2572
2573 /* We must allocate the symbol in our .dynbss section, which will
2574 become part of the .bss section of the executable. There will be
2575 an entry for this symbol in the .dynsym section. The dynamic
2576 object will contain position independent code, so all references
2577 from the dynamic object to this symbol will go through the global
2578 offset table. The dynamic linker will use the .dynsym entry to
2579 determine the address it must put in the global offset table, so
2580 both the dynamic object and the regular object will refer to the
2581 same memory location for the variable. */
2582
2583 s = htab->sdynbss;
2584 BFD_ASSERT (s != NULL);
2585
2586 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2587 copy the initial value out of the dynamic object and into the
2588 runtime process image. We need to remember the offset into the
2589 .rela.bss section we are going to use. */
2590 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2591 {
2592 asection *srel;
2593
2594 srel = htab->srelbss;
2595 BFD_ASSERT (srel != NULL);
2596 srel->size += sizeof (Elf32_External_Rela);
2597 h->needs_copy = 1;
2598 }
2599
2600 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2601 }
2602
2603 /* Allocate space in .plt, .got and associated reloc sections for
2604 dynamic relocs. */
2605
2606 static bfd_boolean
2607 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2608 {
2609 struct bfd_link_info *info;
2610 struct elf_sh_link_hash_table *htab;
2611 struct elf_sh_link_hash_entry *eh;
2612 struct elf_dyn_relocs *p;
2613
2614 if (h->root.type == bfd_link_hash_indirect)
2615 return TRUE;
2616
2617 info = (struct bfd_link_info *) inf;
2618 htab = sh_elf_hash_table (info);
2619 if (htab == NULL)
2620 return FALSE;
2621
2622 eh = (struct elf_sh_link_hash_entry *) h;
2623 if ((h->got.refcount > 0
2624 || h->forced_local)
2625 && eh->gotplt_refcount > 0)
2626 {
2627 /* The symbol has been forced local, or we have some direct got refs,
2628 so treat all the gotplt refs as got refs. */
2629 h->got.refcount += eh->gotplt_refcount;
2630 if (h->plt.refcount >= eh->gotplt_refcount)
2631 h->plt.refcount -= eh->gotplt_refcount;
2632 }
2633
2634 if (htab->root.dynamic_sections_created
2635 && h->plt.refcount > 0
2636 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2637 || h->root.type != bfd_link_hash_undefweak))
2638 {
2639 /* Make sure this symbol is output as a dynamic symbol.
2640 Undefined weak syms won't yet be marked as dynamic. */
2641 if (h->dynindx == -1
2642 && !h->forced_local)
2643 {
2644 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2645 return FALSE;
2646 }
2647
2648 if (bfd_link_pic (info)
2649 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2650 {
2651 asection *s = htab->root.splt;
2652 const struct elf_sh_plt_info *plt_info;
2653
2654 /* If this is the first .plt entry, make room for the special
2655 first entry. */
2656 if (s->size == 0)
2657 s->size += htab->plt_info->plt0_entry_size;
2658
2659 h->plt.offset = s->size;
2660
2661 /* If this symbol is not defined in a regular file, and we are
2662 not generating a shared library, then set the symbol to this
2663 location in the .plt. This is required to make function
2664 pointers compare as equal between the normal executable and
2665 the shared library. Skip this for FDPIC, since the
2666 function's address will be the address of the canonical
2667 function descriptor. */
2668 if (!htab->fdpic_p && !bfd_link_pic (info) && !h->def_regular)
2669 {
2670 h->root.u.def.section = s;
2671 h->root.u.def.value = h->plt.offset;
2672 }
2673
2674 /* Make room for this entry. */
2675 plt_info = htab->plt_info;
2676 if (plt_info->short_plt != NULL
2677 && (get_plt_index (plt_info->short_plt, s->size) < MAX_SHORT_PLT))
2678 plt_info = plt_info->short_plt;
2679 s->size += plt_info->symbol_entry_size;
2680
2681 /* We also need to make an entry in the .got.plt section, which
2682 will be placed in the .got section by the linker script. */
2683 if (!htab->fdpic_p)
2684 htab->root.sgotplt->size += 4;
2685 else
2686 htab->root.sgotplt->size += 8;
2687
2688 /* We also need to make an entry in the .rel.plt section. */
2689 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
2690
2691 if (htab->root.target_os == is_vxworks && !bfd_link_pic (info))
2692 {
2693 /* VxWorks executables have a second set of relocations
2694 for each PLT entry. They go in a separate relocation
2695 section, which is processed by the kernel loader. */
2696
2697 /* There is a relocation for the initial PLT entry:
2698 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2699 if (h->plt.offset == htab->plt_info->plt0_entry_size)
2700 htab->srelplt2->size += sizeof (Elf32_External_Rela);
2701
2702 /* There are two extra relocations for each subsequent
2703 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2704 and an R_SH_DIR32 relocation for the PLT entry. */
2705 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2706 }
2707 }
2708 else
2709 {
2710 h->plt.offset = (bfd_vma) -1;
2711 h->needs_plt = 0;
2712 }
2713 }
2714 else
2715 {
2716 h->plt.offset = (bfd_vma) -1;
2717 h->needs_plt = 0;
2718 }
2719
2720 if (h->got.refcount > 0)
2721 {
2722 asection *s;
2723 bfd_boolean dyn;
2724 enum got_type got_type = sh_elf_hash_entry (h)->got_type;
2725
2726 /* Make sure this symbol is output as a dynamic symbol.
2727 Undefined weak syms won't yet be marked as dynamic. */
2728 if (h->dynindx == -1
2729 && !h->forced_local)
2730 {
2731 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2732 return FALSE;
2733 }
2734
2735 s = htab->root.sgot;
2736 h->got.offset = s->size;
2737 s->size += 4;
2738 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2739 if (got_type == GOT_TLS_GD)
2740 s->size += 4;
2741 dyn = htab->root.dynamic_sections_created;
2742 if (!dyn)
2743 {
2744 /* No dynamic relocations required. */
2745 if (htab->fdpic_p && !bfd_link_pic (info)
2746 && h->root.type != bfd_link_hash_undefweak
2747 && (got_type == GOT_NORMAL || got_type == GOT_FUNCDESC))
2748 htab->srofixup->size += 4;
2749 }
2750 /* No dynamic relocations required when IE->LE conversion happens. */
2751 else if (got_type == GOT_TLS_IE
2752 && !h->def_dynamic
2753 && !bfd_link_pic (info))
2754 ;
2755 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2756 R_SH_TLS_GD needs one if local symbol and two if global. */
2757 else if ((got_type == GOT_TLS_GD && h->dynindx == -1)
2758 || got_type == GOT_TLS_IE)
2759 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2760 else if (got_type == GOT_TLS_GD)
2761 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2762 else if (got_type == GOT_FUNCDESC)
2763 {
2764 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2765 htab->srofixup->size += 4;
2766 else
2767 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2768 }
2769 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2770 || h->root.type != bfd_link_hash_undefweak)
2771 && (bfd_link_pic (info)
2772 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2773 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2774 else if (htab->fdpic_p
2775 && !bfd_link_pic (info)
2776 && got_type == GOT_NORMAL
2777 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2778 || h->root.type != bfd_link_hash_undefweak))
2779 htab->srofixup->size += 4;
2780 }
2781 else
2782 h->got.offset = (bfd_vma) -1;
2783
2784 /* Allocate space for any dynamic relocations to function
2785 descriptors, canonical or otherwise. We need to relocate the
2786 reference unless it resolves to zero, which only happens for
2787 undefined weak symbols (either non-default visibility, or when
2788 static linking). Any GOT slot is accounted for elsewhere. */
2789 if (eh->abs_funcdesc_refcount > 0
2790 && (h->root.type != bfd_link_hash_undefweak
2791 || (htab->root.dynamic_sections_created
2792 && ! SYMBOL_CALLS_LOCAL (info, h))))
2793 {
2794 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2795 htab->srofixup->size += eh->abs_funcdesc_refcount * 4;
2796 else
2797 htab->root.srelgot->size
2798 += eh->abs_funcdesc_refcount * sizeof (Elf32_External_Rela);
2799 }
2800
2801 /* We must allocate a function descriptor if there are references to
2802 a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and
2803 the dynamic linker isn't going to allocate it. None of this
2804 applies if we already created one in .got.plt, but if the
2805 canonical function descriptor can be in this object, there
2806 won't be a PLT entry at all. */
2807 if ((eh->funcdesc.refcount > 0
2808 || (h->got.offset != MINUS_ONE && eh->got_type == GOT_FUNCDESC))
2809 && h->root.type != bfd_link_hash_undefweak
2810 && SYMBOL_FUNCDESC_LOCAL (info, h))
2811 {
2812 /* Make room for this function descriptor. */
2813 eh->funcdesc.offset = htab->sfuncdesc->size;
2814 htab->sfuncdesc->size += 8;
2815
2816 /* We will need a relocation or two fixups to initialize the
2817 function descriptor, so allocate those too. */
2818 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
2819 htab->srofixup->size += 8;
2820 else
2821 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
2822 }
2823
2824 if (h->dyn_relocs == NULL)
2825 return TRUE;
2826
2827 /* In the shared -Bsymbolic case, discard space allocated for
2828 dynamic pc-relative relocs against symbols which turn out to be
2829 defined in regular objects. For the normal shared case, discard
2830 space for pc-relative relocs that have become local due to symbol
2831 visibility changes. */
2832
2833 if (bfd_link_pic (info))
2834 {
2835 if (SYMBOL_CALLS_LOCAL (info, h))
2836 {
2837 struct elf_dyn_relocs **pp;
2838
2839 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2840 {
2841 p->count -= p->pc_count;
2842 p->pc_count = 0;
2843 if (p->count == 0)
2844 *pp = p->next;
2845 else
2846 pp = &p->next;
2847 }
2848 }
2849
2850 if (htab->root.target_os == is_vxworks)
2851 {
2852 struct elf_dyn_relocs **pp;
2853
2854 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2855 {
2856 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2857 *pp = p->next;
2858 else
2859 pp = &p->next;
2860 }
2861 }
2862
2863 /* Also discard relocs on undefined weak syms with non-default
2864 visibility. */
2865 if (h->dyn_relocs != NULL
2866 && h->root.type == bfd_link_hash_undefweak)
2867 {
2868 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2869 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2870 h->dyn_relocs = NULL;
2871
2872 /* Make sure undefined weak symbols are output as a dynamic
2873 symbol in PIEs. */
2874 else if (h->dynindx == -1
2875 && !h->forced_local)
2876 {
2877 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2878 return FALSE;
2879 }
2880 }
2881 }
2882 else
2883 {
2884 /* For the non-shared case, discard space for relocs against
2885 symbols which turn out to need copy relocs or are not
2886 dynamic. */
2887
2888 if (!h->non_got_ref
2889 && ((h->def_dynamic
2890 && !h->def_regular)
2891 || (htab->root.dynamic_sections_created
2892 && (h->root.type == bfd_link_hash_undefweak
2893 || h->root.type == bfd_link_hash_undefined))))
2894 {
2895 /* Make sure this symbol is output as a dynamic symbol.
2896 Undefined weak syms won't yet be marked as dynamic. */
2897 if (h->dynindx == -1
2898 && !h->forced_local)
2899 {
2900 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2901 return FALSE;
2902 }
2903
2904 /* If that succeeded, we know we'll be keeping all the
2905 relocs. */
2906 if (h->dynindx != -1)
2907 goto keep;
2908 }
2909
2910 h->dyn_relocs = NULL;
2911
2912 keep: ;
2913 }
2914
2915 /* Finally, allocate space. */
2916 for (p = h->dyn_relocs; p != NULL; p = p->next)
2917 {
2918 asection *sreloc = elf_section_data (p->sec)->sreloc;
2919 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2920
2921 /* If we need relocations, we do not need fixups. */
2922 if (htab->fdpic_p && !bfd_link_pic (info))
2923 htab->srofixup->size -= 4 * (p->count - p->pc_count);
2924 }
2925
2926 return TRUE;
2927 }
2928
2929 /* This function is called after all the input files have been read,
2930 and the input sections have been assigned to output sections.
2931 It's a convenient place to determine the PLT style. */
2932
2933 static bfd_boolean
2934 sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2935 {
2936 sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd,
2937 bfd_link_pic (info));
2938
2939 if (sh_elf_hash_table (info)->fdpic_p && !bfd_link_relocatable (info)
2940 && !bfd_elf_stack_segment_size (output_bfd, info,
2941 "__stacksize", DEFAULT_STACK_SIZE))
2942 return FALSE;
2943 return TRUE;
2944 }
2945
2946 /* Set the sizes of the dynamic sections. */
2947
2948 static bfd_boolean
2949 sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2950 struct bfd_link_info *info)
2951 {
2952 struct elf_sh_link_hash_table *htab;
2953 bfd *dynobj;
2954 asection *s;
2955 bfd_boolean relocs;
2956 bfd *ibfd;
2957
2958 htab = sh_elf_hash_table (info);
2959 if (htab == NULL)
2960 return FALSE;
2961
2962 dynobj = htab->root.dynobj;
2963 BFD_ASSERT (dynobj != NULL);
2964
2965 if (htab->root.dynamic_sections_created)
2966 {
2967 /* Set the contents of the .interp section to the interpreter. */
2968 if (bfd_link_executable (info) && !info->nointerp)
2969 {
2970 s = bfd_get_linker_section (dynobj, ".interp");
2971 BFD_ASSERT (s != NULL);
2972 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2973 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2974 }
2975 }
2976
2977 /* Set up .got offsets for local syms, and space for local dynamic
2978 relocs. */
2979 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2980 {
2981 bfd_signed_vma *local_got;
2982 bfd_signed_vma *end_local_got;
2983 union gotref *local_funcdesc, *end_local_funcdesc;
2984 char *local_got_type;
2985 bfd_size_type locsymcount;
2986 Elf_Internal_Shdr *symtab_hdr;
2987 asection *srel;
2988
2989 if (! is_sh_elf (ibfd))
2990 continue;
2991
2992 for (s = ibfd->sections; s != NULL; s = s->next)
2993 {
2994 struct elf_dyn_relocs *p;
2995
2996 for (p = ((struct elf_dyn_relocs *)
2997 elf_section_data (s)->local_dynrel);
2998 p != NULL;
2999 p = p->next)
3000 {
3001 if (! bfd_is_abs_section (p->sec)
3002 && bfd_is_abs_section (p->sec->output_section))
3003 {
3004 /* Input section has been discarded, either because
3005 it is a copy of a linkonce section or due to
3006 linker script /DISCARD/, so we'll be discarding
3007 the relocs too. */
3008 }
3009 else if (htab->root.target_os == is_vxworks
3010 && strcmp (p->sec->output_section->name,
3011 ".tls_vars") == 0)
3012 {
3013 /* Relocations in vxworks .tls_vars sections are
3014 handled specially by the loader. */
3015 }
3016 else if (p->count != 0)
3017 {
3018 srel = elf_section_data (p->sec)->sreloc;
3019 srel->size += p->count * sizeof (Elf32_External_Rela);
3020 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3021 {
3022 info->flags |= DF_TEXTREL;
3023 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
3024 p->sec->owner, p->sec);
3025 }
3026
3027 /* If we need relocations, we do not need fixups. */
3028 if (htab->fdpic_p && !bfd_link_pic (info))
3029 htab->srofixup->size -= 4 * (p->count - p->pc_count);
3030 }
3031 }
3032 }
3033
3034 symtab_hdr = &elf_symtab_hdr (ibfd);
3035 locsymcount = symtab_hdr->sh_info;
3036 s = htab->root.sgot;
3037 srel = htab->root.srelgot;
3038
3039 local_got = elf_local_got_refcounts (ibfd);
3040 if (local_got)
3041 {
3042 end_local_got = local_got + locsymcount;
3043 local_got_type = sh_elf_local_got_type (ibfd);
3044 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3045 for (; local_got < end_local_got; ++local_got)
3046 {
3047 if (*local_got > 0)
3048 {
3049 *local_got = s->size;
3050 s->size += 4;
3051 if (*local_got_type == GOT_TLS_GD)
3052 s->size += 4;
3053 if (bfd_link_pic (info))
3054 srel->size += sizeof (Elf32_External_Rela);
3055 else
3056 htab->srofixup->size += 4;
3057
3058 if (*local_got_type == GOT_FUNCDESC)
3059 {
3060 if (local_funcdesc == NULL)
3061 {
3062 bfd_size_type size;
3063
3064 size = locsymcount * sizeof (union gotref);
3065 local_funcdesc = (union gotref *) bfd_zalloc (ibfd,
3066 size);
3067 if (local_funcdesc == NULL)
3068 return FALSE;
3069 sh_elf_local_funcdesc (ibfd) = local_funcdesc;
3070 local_funcdesc += (local_got
3071 - elf_local_got_refcounts (ibfd));
3072 }
3073 local_funcdesc->refcount++;
3074 ++local_funcdesc;
3075 }
3076 }
3077 else
3078 *local_got = (bfd_vma) -1;
3079 ++local_got_type;
3080 }
3081 }
3082
3083 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3084 if (local_funcdesc)
3085 {
3086 end_local_funcdesc = local_funcdesc + locsymcount;
3087
3088 for (; local_funcdesc < end_local_funcdesc; ++local_funcdesc)
3089 {
3090 if (local_funcdesc->refcount > 0)
3091 {
3092 local_funcdesc->offset = htab->sfuncdesc->size;
3093 htab->sfuncdesc->size += 8;
3094 if (!bfd_link_pic (info))
3095 htab->srofixup->size += 8;
3096 else
3097 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
3098 }
3099 else
3100 local_funcdesc->offset = MINUS_ONE;
3101 }
3102 }
3103
3104 }
3105
3106 if (htab->tls_ldm_got.refcount > 0)
3107 {
3108 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3109 relocs. */
3110 htab->tls_ldm_got.offset = htab->root.sgot->size;
3111 htab->root.sgot->size += 8;
3112 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
3113 }
3114 else
3115 htab->tls_ldm_got.offset = -1;
3116
3117 /* Only the reserved entries should be present. For FDPIC, they go at
3118 the end of .got.plt. */
3119 if (htab->fdpic_p)
3120 {
3121 BFD_ASSERT (htab->root.sgotplt && htab->root.sgotplt->size == 12);
3122 htab->root.sgotplt->size = 0;
3123 }
3124
3125 /* Allocate global sym .plt and .got entries, and space for global
3126 sym dynamic relocs. */
3127 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3128
3129 /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
3130 end of the FDPIC .got.plt. */
3131 if (htab->fdpic_p)
3132 {
3133 htab->root.hgot->root.u.def.value = htab->root.sgotplt->size;
3134 htab->root.sgotplt->size += 12;
3135 }
3136
3137 /* At the very end of the .rofixup section is a pointer to the GOT. */
3138 if (htab->fdpic_p && htab->srofixup != NULL)
3139 htab->srofixup->size += 4;
3140
3141 /* We now have determined the sizes of the various dynamic sections.
3142 Allocate memory for them. */
3143 relocs = FALSE;
3144 for (s = dynobj->sections; s != NULL; s = s->next)
3145 {
3146 if ((s->flags & SEC_LINKER_CREATED) == 0)
3147 continue;
3148
3149 if (s == htab->root.splt
3150 || s == htab->root.sgot
3151 || s == htab->root.sgotplt
3152 || s == htab->sfuncdesc
3153 || s == htab->srofixup
3154 || s == htab->sdynbss)
3155 {
3156 /* Strip this section if we don't need it; see the
3157 comment below. */
3158 }
3159 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
3160 {
3161 if (s->size != 0 && s != htab->root.srelplt && s != htab->srelplt2)
3162 relocs = TRUE;
3163
3164 /* We use the reloc_count field as a counter if we need
3165 to copy relocs into the output file. */
3166 s->reloc_count = 0;
3167 }
3168 else
3169 {
3170 /* It's not one of our sections, so don't allocate space. */
3171 continue;
3172 }
3173
3174 if (s->size == 0)
3175 {
3176 /* If we don't need this section, strip it from the
3177 output file. This is mostly to handle .rela.bss and
3178 .rela.plt. We must create both sections in
3179 create_dynamic_sections, because they must be created
3180 before the linker maps input sections to output
3181 sections. The linker does that before
3182 adjust_dynamic_symbol is called, and it is that
3183 function which decides whether anything needs to go
3184 into these sections. */
3185
3186 s->flags |= SEC_EXCLUDE;
3187 continue;
3188 }
3189
3190 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3191 continue;
3192
3193 /* Allocate memory for the section contents. We use bfd_zalloc
3194 here in case unused entries are not reclaimed before the
3195 section's contents are written out. This should not happen,
3196 but this way if it does, we get a R_SH_NONE reloc instead
3197 of garbage. */
3198 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3199 if (s->contents == NULL)
3200 return FALSE;
3201 }
3202
3203 return _bfd_elf_maybe_vxworks_add_dynamic_tags (output_bfd, info,
3204 relocs);
3205 }
3206 \f
3207 /* Add a dynamic relocation to the SRELOC section. */
3208
3209 inline static bfd_vma
3210 sh_elf_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
3211 int reloc_type, long dynindx, bfd_vma addend)
3212 {
3213 Elf_Internal_Rela outrel;
3214 bfd_vma reloc_offset;
3215
3216 outrel.r_offset = offset;
3217 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
3218 outrel.r_addend = addend;
3219
3220 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rela);
3221 BFD_ASSERT (reloc_offset < sreloc->size);
3222 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3223 sreloc->contents + reloc_offset);
3224 sreloc->reloc_count++;
3225
3226 return reloc_offset;
3227 }
3228
3229 /* Add an FDPIC read-only fixup. */
3230
3231 inline static void
3232 sh_elf_add_rofixup (bfd *output_bfd, asection *srofixup, bfd_vma offset)
3233 {
3234 bfd_vma fixup_offset;
3235
3236 fixup_offset = srofixup->reloc_count++ * 4;
3237 BFD_ASSERT (fixup_offset < srofixup->size);
3238 bfd_put_32 (output_bfd, offset, srofixup->contents + fixup_offset);
3239 }
3240
3241 /* Return the offset of the generated .got section from the
3242 _GLOBAL_OFFSET_TABLE_ symbol. */
3243
3244 static bfd_signed_vma
3245 sh_elf_got_offset (struct elf_sh_link_hash_table *htab)
3246 {
3247 return (htab->root.sgot->output_offset - htab->root.sgotplt->output_offset
3248 - htab->root.hgot->root.u.def.value);
3249 }
3250
3251 /* Find the segment number in which OSEC, and output section, is
3252 located. */
3253
3254 static unsigned
3255 sh_elf_osec_to_segment (bfd *output_bfd, asection *osec)
3256 {
3257 Elf_Internal_Phdr *p = NULL;
3258
3259 if (output_bfd->xvec->flavour == bfd_target_elf_flavour
3260 /* PR ld/17110: Do not look for output segments in an input bfd. */
3261 && output_bfd->direction != read_direction)
3262 p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
3263
3264 /* FIXME: Nothing ever says what this index is relative to. The kernel
3265 supplies data in terms of the number of load segments but this is
3266 a phdr index and the first phdr may not be a load segment. */
3267 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
3268 }
3269
3270 static bfd_boolean
3271 sh_elf_osec_readonly_p (bfd *output_bfd, asection *osec)
3272 {
3273 unsigned seg = sh_elf_osec_to_segment (output_bfd, osec);
3274
3275 return (seg != (unsigned) -1
3276 && ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W));
3277 }
3278
3279 /* Generate the initial contents of a local function descriptor, along
3280 with any relocations or fixups required. */
3281 static bfd_boolean
3282 sh_elf_initialize_funcdesc (bfd *output_bfd,
3283 struct bfd_link_info *info,
3284 struct elf_link_hash_entry *h,
3285 bfd_vma offset,
3286 asection *section,
3287 bfd_vma value)
3288 {
3289 struct elf_sh_link_hash_table *htab;
3290 int dynindx;
3291 bfd_vma addr, seg;
3292
3293 htab = sh_elf_hash_table (info);
3294
3295 /* FIXME: The ABI says that the offset to the function goes in the
3296 descriptor, along with the segment index. We're RELA, so it could
3297 go in the reloc instead... */
3298
3299 if (h != NULL && SYMBOL_CALLS_LOCAL (info, h))
3300 {
3301 section = h->root.u.def.section;
3302 value = h->root.u.def.value;
3303 }
3304
3305 if (h == NULL || SYMBOL_CALLS_LOCAL (info, h))
3306 {
3307 dynindx = elf_section_data (section->output_section)->dynindx;
3308 addr = value + section->output_offset;
3309 seg = sh_elf_osec_to_segment (output_bfd, section->output_section);
3310 }
3311 else
3312 {
3313 BFD_ASSERT (h->dynindx != -1);
3314 dynindx = h->dynindx;
3315 addr = seg = 0;
3316 }
3317
3318 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
3319 {
3320 if (h == NULL || h->root.type != bfd_link_hash_undefweak)
3321 {
3322 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3323 offset
3324 + htab->sfuncdesc->output_section->vma
3325 + htab->sfuncdesc->output_offset);
3326 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3327 offset + 4
3328 + htab->sfuncdesc->output_section->vma
3329 + htab->sfuncdesc->output_offset);
3330 }
3331
3332 /* There are no dynamic relocations so fill in the final
3333 address and gp value (barring fixups). */
3334 addr += section->output_section->vma;
3335 seg = htab->root.hgot->root.u.def.value
3336 + htab->root.hgot->root.u.def.section->output_section->vma
3337 + htab->root.hgot->root.u.def.section->output_offset;
3338 }
3339 else
3340 sh_elf_add_dyn_reloc (output_bfd, htab->srelfuncdesc,
3341 offset
3342 + htab->sfuncdesc->output_section->vma
3343 + htab->sfuncdesc->output_offset,
3344 R_SH_FUNCDESC_VALUE, dynindx, 0);
3345
3346 bfd_put_32 (output_bfd, addr, htab->sfuncdesc->contents + offset);
3347 bfd_put_32 (output_bfd, seg, htab->sfuncdesc->contents + offset + 4);
3348
3349 return TRUE;
3350 }
3351
3352 /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
3353 VALUE is the field's value. Return bfd_reloc_ok if successful or an error
3354 otherwise. */
3355
3356 static bfd_reloc_status_type
3357 install_movi20_field (bfd *output_bfd, unsigned long relocation,
3358 bfd *input_bfd, asection *input_section,
3359 bfd_byte *contents, bfd_vma offset)
3360 {
3361 unsigned long cur_val;
3362 bfd_byte *addr;
3363 bfd_reloc_status_type r;
3364
3365 if (offset > bfd_get_section_limit (input_bfd, input_section))
3366 return bfd_reloc_outofrange;
3367
3368 r = bfd_check_overflow (complain_overflow_signed, 20, 0,
3369 bfd_arch_bits_per_address (input_bfd), relocation);
3370 if (r != bfd_reloc_ok)
3371 return r;
3372
3373 addr = contents + offset;
3374 cur_val = bfd_get_16 (output_bfd, addr);
3375 bfd_put_16 (output_bfd, cur_val | ((relocation & 0xf0000) >> 12), addr);
3376 bfd_put_16 (output_bfd, relocation & 0xffff, addr + 2);
3377
3378 return bfd_reloc_ok;
3379 }
3380
3381 /* Relocate an SH ELF section. */
3382
3383 static bfd_boolean
3384 sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3385 bfd *input_bfd, asection *input_section,
3386 bfd_byte *contents, Elf_Internal_Rela *relocs,
3387 Elf_Internal_Sym *local_syms,
3388 asection **local_sections)
3389 {
3390 struct elf_sh_link_hash_table *htab;
3391 Elf_Internal_Shdr *symtab_hdr;
3392 struct elf_link_hash_entry **sym_hashes;
3393 Elf_Internal_Rela *rel, *relend;
3394 bfd_vma *local_got_offsets;
3395 asection *sgot = NULL;
3396 asection *sgotplt = NULL;
3397 asection *splt = NULL;
3398 asection *sreloc = NULL;
3399 asection *srelgot = NULL;
3400 bfd_boolean is_vxworks_tls;
3401 unsigned isec_segment, got_segment, plt_segment, check_segment[2];
3402 bfd_boolean fdpic_p = FALSE;
3403
3404 if (!is_sh_elf (input_bfd))
3405 {
3406 bfd_set_error (bfd_error_wrong_format);
3407 return FALSE;
3408 }
3409
3410 htab = sh_elf_hash_table (info);
3411 if (htab != NULL)
3412 {
3413 sgot = htab->root.sgot;
3414 sgotplt = htab->root.sgotplt;
3415 srelgot = htab->root.srelgot;
3416 splt = htab->root.splt;
3417 fdpic_p = htab->fdpic_p;
3418 }
3419 symtab_hdr = &elf_symtab_hdr (input_bfd);
3420 sym_hashes = elf_sym_hashes (input_bfd);
3421 local_got_offsets = elf_local_got_offsets (input_bfd);
3422
3423 isec_segment = sh_elf_osec_to_segment (output_bfd,
3424 input_section->output_section);
3425 if (fdpic_p && sgot)
3426 got_segment = sh_elf_osec_to_segment (output_bfd,
3427 sgot->output_section);
3428 else
3429 got_segment = -1;
3430 if (fdpic_p && splt)
3431 plt_segment = sh_elf_osec_to_segment (output_bfd,
3432 splt->output_section);
3433 else
3434 plt_segment = -1;
3435
3436 /* We have to handle relocations in vxworks .tls_vars sections
3437 specially, because the dynamic loader is 'weird'. */
3438 is_vxworks_tls = (htab && htab->root.target_os == is_vxworks && bfd_link_pic (info)
3439 && !strcmp (input_section->output_section->name,
3440 ".tls_vars"));
3441
3442 rel = relocs;
3443 relend = relocs + input_section->reloc_count;
3444 for (; rel < relend; rel++)
3445 {
3446 int r_type;
3447 reloc_howto_type *howto;
3448 unsigned long r_symndx;
3449 Elf_Internal_Sym *sym;
3450 asection *sec;
3451 struct elf_link_hash_entry *h;
3452 bfd_vma relocation;
3453 bfd_vma addend = (bfd_vma) 0;
3454 bfd_reloc_status_type r;
3455 bfd_vma off;
3456 enum got_type got_type;
3457 const char *symname = NULL;
3458 bfd_boolean resolved_to_zero;
3459
3460 r_symndx = ELF32_R_SYM (rel->r_info);
3461
3462 r_type = ELF32_R_TYPE (rel->r_info);
3463
3464 /* Many of the relocs are only used for relaxing, and are
3465 handled entirely by the relaxation code. */
3466 if (r_type >= (int) R_SH_GNU_VTINHERIT
3467 && r_type <= (int) R_SH_LABEL)
3468 continue;
3469 if (r_type == (int) R_SH_NONE)
3470 continue;
3471
3472 if (r_type < 0
3473 || r_type >= R_SH_max
3474 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3475 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3476 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3477 && r_type <= (int) R_SH_LAST_INVALID_RELOC_2)
3478 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3479 && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3480 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3481 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3482 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3483 && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3484 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_6
3485 && r_type <= (int) R_SH_LAST_INVALID_RELOC_6))
3486 {
3487 bfd_set_error (bfd_error_bad_value);
3488 return FALSE;
3489 }
3490
3491 howto = get_howto_table (output_bfd) + r_type;
3492
3493 /* For relocs that aren't partial_inplace, we get the addend from
3494 the relocation. */
3495 if (! howto->partial_inplace)
3496 addend = rel->r_addend;
3497
3498 resolved_to_zero = FALSE;
3499 h = NULL;
3500 sym = NULL;
3501 sec = NULL;
3502 check_segment[0] = -1;
3503 check_segment[1] = -1;
3504 if (r_symndx < symtab_hdr->sh_info)
3505 {
3506 sym = local_syms + r_symndx;
3507 sec = local_sections[r_symndx];
3508
3509 symname = bfd_elf_string_from_elf_section
3510 (input_bfd, symtab_hdr->sh_link, sym->st_name);
3511 if (symname == NULL || *symname == '\0')
3512 symname = bfd_section_name (sec);
3513
3514 relocation = (sec->output_section->vma
3515 + sec->output_offset
3516 + sym->st_value);
3517
3518 if (sec != NULL && discarded_section (sec))
3519 /* Handled below. */
3520 ;
3521 else if (bfd_link_relocatable (info))
3522 {
3523 /* This is a relocatable link. We don't have to change
3524 anything, unless the reloc is against a section symbol,
3525 in which case we have to adjust according to where the
3526 section symbol winds up in the output section. */
3527 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3528 {
3529 if (! howto->partial_inplace)
3530 {
3531 /* For relocations with the addend in the
3532 relocation, we need just to update the addend.
3533 All real relocs are of type partial_inplace; this
3534 code is mostly for completeness. */
3535 rel->r_addend += sec->output_offset;
3536
3537 continue;
3538 }
3539
3540 /* Relocs of type partial_inplace need to pick up the
3541 contents in the contents and add the offset resulting
3542 from the changed location of the section symbol.
3543 Using _bfd_final_link_relocate (e.g. goto
3544 final_link_relocate) here would be wrong, because
3545 relocations marked pc_relative would get the current
3546 location subtracted, and we must only do that at the
3547 final link. */
3548 r = _bfd_relocate_contents (howto, input_bfd,
3549 sec->output_offset
3550 + sym->st_value,
3551 contents + rel->r_offset);
3552 goto relocation_done;
3553 }
3554
3555 continue;
3556 }
3557 else if (! howto->partial_inplace)
3558 {
3559 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3560 addend = rel->r_addend;
3561 }
3562 else if ((sec->flags & SEC_MERGE)
3563 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3564 {
3565 asection *msec;
3566
3567 if (howto->rightshift || howto->src_mask != 0xffffffff)
3568 {
3569 _bfd_error_handler
3570 /* xgettext:c-format */
3571 (_("%pB(%pA+%#" PRIx64 "): "
3572 "%s relocation against SEC_MERGE section"),
3573 input_bfd, input_section,
3574 (uint64_t) rel->r_offset, howto->name);
3575 return FALSE;
3576 }
3577
3578 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3579 msec = sec;
3580 addend =
3581 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3582 - relocation;
3583 addend += msec->output_section->vma + msec->output_offset;
3584 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3585 addend = 0;
3586 }
3587 }
3588 else
3589 {
3590 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3591
3592 relocation = 0;
3593 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3594 symname = h->root.root.string;
3595 while (h->root.type == bfd_link_hash_indirect
3596 || h->root.type == bfd_link_hash_warning)
3597 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3598 if (h->root.type == bfd_link_hash_defined
3599 || h->root.type == bfd_link_hash_defweak)
3600 {
3601 bfd_boolean dyn;
3602
3603 dyn = htab ? htab->root.dynamic_sections_created : FALSE;
3604 sec = h->root.u.def.section;
3605 /* In these cases, we don't need the relocation value.
3606 We check specially because in some obscure cases
3607 sec->output_section will be NULL. */
3608 if (r_type == R_SH_GOTPC
3609 || r_type == R_SH_GOTPC_LOW16
3610 || r_type == R_SH_GOTPC_MEDLOW16
3611 || r_type == R_SH_GOTPC_MEDHI16
3612 || r_type == R_SH_GOTPC_HI16
3613 || ((r_type == R_SH_PLT32
3614 || r_type == R_SH_PLT_LOW16
3615 || r_type == R_SH_PLT_MEDLOW16
3616 || r_type == R_SH_PLT_MEDHI16
3617 || r_type == R_SH_PLT_HI16)
3618 && h->plt.offset != (bfd_vma) -1)
3619 || ((r_type == R_SH_GOT32
3620 || r_type == R_SH_GOT20
3621 || r_type == R_SH_GOTFUNCDESC
3622 || r_type == R_SH_GOTFUNCDESC20
3623 || r_type == R_SH_GOTOFFFUNCDESC
3624 || r_type == R_SH_GOTOFFFUNCDESC20
3625 || r_type == R_SH_FUNCDESC
3626 || r_type == R_SH_GOT_LOW16
3627 || r_type == R_SH_GOT_MEDLOW16
3628 || r_type == R_SH_GOT_MEDHI16
3629 || r_type == R_SH_GOT_HI16)
3630 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3631 bfd_link_pic (info),
3632 h)
3633 && (! bfd_link_pic (info)
3634 || (! info->symbolic && h->dynindx != -1)
3635 || !h->def_regular))
3636 /* The cases above are those in which relocation is
3637 overwritten in the switch block below. The cases
3638 below are those in which we must defer relocation
3639 to run-time, because we can't resolve absolute
3640 addresses when creating a shared library. */
3641 || (bfd_link_pic (info)
3642 && ((! info->symbolic && h->dynindx != -1)
3643 || !h->def_regular)
3644 && ((r_type == R_SH_DIR32
3645 && !h->forced_local)
3646 || (r_type == R_SH_REL32
3647 && !SYMBOL_CALLS_LOCAL (info, h)))
3648 && ((input_section->flags & SEC_ALLOC) != 0
3649 /* DWARF will emit R_SH_DIR32 relocations in its
3650 sections against symbols defined externally
3651 in shared libraries. We can't do anything
3652 with them here. */
3653 || ((input_section->flags & SEC_DEBUGGING) != 0
3654 && h->def_dynamic)))
3655 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3656 sections because such sections are not SEC_ALLOC and
3657 thus ld.so will not process them. */
3658 || (sec->output_section == NULL
3659 && ((input_section->flags & SEC_DEBUGGING) != 0
3660 && h->def_dynamic))
3661 || (sec->output_section == NULL
3662 && (sh_elf_hash_entry (h)->got_type == GOT_TLS_IE
3663 || sh_elf_hash_entry (h)->got_type == GOT_TLS_GD)))
3664 ;
3665 else if (sec->output_section != NULL)
3666 relocation = (h->root.u.def.value
3667 + sec->output_section->vma
3668 + sec->output_offset);
3669 else if (!bfd_link_relocatable (info)
3670 && (_bfd_elf_section_offset (output_bfd, info,
3671 input_section,
3672 rel->r_offset)
3673 != (bfd_vma) -1))
3674 {
3675 _bfd_error_handler
3676 /* xgettext:c-format */
3677 (_("%pB(%pA+%#" PRIx64 "): "
3678 "unresolvable %s relocation against symbol `%s'"),
3679 input_bfd,
3680 input_section,
3681 (uint64_t) rel->r_offset,
3682 howto->name,
3683 h->root.root.string);
3684 return FALSE;
3685 }
3686 }
3687 else if (h->root.type == bfd_link_hash_undefweak)
3688 resolved_to_zero = UNDEFWEAK_NO_DYNAMIC_RELOC (info, h);
3689 else if (info->unresolved_syms_in_objects == RM_IGNORE
3690 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3691 ;
3692 else if (!bfd_link_relocatable (info))
3693 info->callbacks->undefined_symbol
3694 (info, h->root.root.string, input_bfd, input_section,
3695 rel->r_offset,
3696 (info->unresolved_syms_in_objects == RM_DIAGNOSE
3697 && !info->warn_unresolved_syms)
3698 || ELF_ST_VISIBILITY (h->other));
3699 }
3700
3701 if (sec != NULL && discarded_section (sec))
3702 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3703 rel, 1, relend, howto, 0, contents);
3704
3705 if (bfd_link_relocatable (info))
3706 continue;
3707
3708 /* Check for inter-segment relocations in FDPIC files. Most
3709 relocations connect the relocation site to the location of
3710 the target symbol, but there are some exceptions below. */
3711 check_segment[0] = isec_segment;
3712 if (sec != NULL)
3713 check_segment[1] = sh_elf_osec_to_segment (output_bfd,
3714 sec->output_section);
3715 else
3716 check_segment[1] = -1;
3717
3718 switch ((int) r_type)
3719 {
3720 final_link_relocate:
3721 /* COFF relocs don't use the addend. The addend is used for
3722 R_SH_DIR32 to be compatible with other compilers. */
3723 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3724 contents, rel->r_offset,
3725 relocation, addend);
3726 break;
3727
3728 case R_SH_IND12W:
3729 goto final_link_relocate;
3730
3731 case R_SH_DIR8WPN:
3732 case R_SH_DIR8WPZ:
3733 case R_SH_DIR8WPL:
3734 /* If the reloc is against the start of this section, then
3735 the assembler has already taken care of it and the reloc
3736 is here only to assist in relaxing. If the reloc is not
3737 against the start of this section, then it's against an
3738 external symbol and we must deal with it ourselves. */
3739 if (input_section->output_section->vma + input_section->output_offset
3740 != relocation)
3741 {
3742 int disp = (relocation
3743 - input_section->output_section->vma
3744 - input_section->output_offset
3745 - rel->r_offset);
3746 int mask = 0;
3747 switch (r_type)
3748 {
3749 case R_SH_DIR8WPN:
3750 case R_SH_DIR8WPZ: mask = 1; break;
3751 case R_SH_DIR8WPL: mask = 3; break;
3752 default: mask = 0; break;
3753 }
3754 if (disp & mask)
3755 {
3756 _bfd_error_handler
3757 /* xgettext:c-format */
3758 (_("%pB: %#" PRIx64 ": fatal: "
3759 "unaligned branch target for relax-support relocation"),
3760 input_section->owner,
3761 (uint64_t) rel->r_offset);
3762 bfd_set_error (bfd_error_bad_value);
3763 return FALSE;
3764 }
3765 relocation -= 4;
3766 goto final_link_relocate;
3767 }
3768 r = bfd_reloc_ok;
3769 break;
3770
3771 default:
3772 bfd_set_error (bfd_error_bad_value);
3773 return FALSE;
3774
3775 case R_SH_DIR16:
3776 case R_SH_DIR8:
3777 case R_SH_DIR8U:
3778 case R_SH_DIR8S:
3779 case R_SH_DIR4U:
3780 goto final_link_relocate;
3781
3782 case R_SH_DIR8UL:
3783 case R_SH_DIR4UL:
3784 if (relocation & 3)
3785 {
3786 _bfd_error_handler
3787 /* xgettext:c-format */
3788 (_("%pB: %#" PRIx64 ": fatal: "
3789 "unaligned %s relocation %#" PRIx64),
3790 input_section->owner, (uint64_t) rel->r_offset,
3791 howto->name, (uint64_t) relocation);
3792 bfd_set_error (bfd_error_bad_value);
3793 return FALSE;
3794 }
3795 goto final_link_relocate;
3796
3797 case R_SH_DIR8UW:
3798 case R_SH_DIR8SW:
3799 case R_SH_DIR4UW:
3800 if (relocation & 1)
3801 {
3802 _bfd_error_handler
3803 /* xgettext:c-format */
3804 (_("%pB: %#" PRIx64 ": fatal: "
3805 "unaligned %s relocation %#" PRIx64 ""),
3806 input_section->owner,
3807 (uint64_t) rel->r_offset, howto->name,
3808 (uint64_t) relocation);
3809 bfd_set_error (bfd_error_bad_value);
3810 return FALSE;
3811 }
3812 goto final_link_relocate;
3813
3814 case R_SH_PSHA:
3815 if ((signed int)relocation < -32
3816 || (signed int)relocation > 32)
3817 {
3818 _bfd_error_handler
3819 /* xgettext:c-format */
3820 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHA relocation %" PRId64
3821 " not in range -32..32"),
3822 input_section->owner,
3823 (uint64_t) rel->r_offset,
3824 (int64_t) relocation);
3825 bfd_set_error (bfd_error_bad_value);
3826 return FALSE;
3827 }
3828 goto final_link_relocate;
3829
3830 case R_SH_PSHL:
3831 if ((signed int)relocation < -16
3832 || (signed int)relocation > 16)
3833 {
3834 _bfd_error_handler
3835 /* xgettext:c-format */
3836 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHL relocation %" PRId64
3837 " not in range -32..32"),
3838 input_section->owner,
3839 (uint64_t) rel->r_offset,
3840 (int64_t) relocation);
3841 bfd_set_error (bfd_error_bad_value);
3842 return FALSE;
3843 }
3844 goto final_link_relocate;
3845
3846 case R_SH_DIR32:
3847 case R_SH_REL32:
3848 if (bfd_link_pic (info)
3849 && (h == NULL
3850 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3851 && !resolved_to_zero)
3852 || h->root.type != bfd_link_hash_undefweak)
3853 && r_symndx != STN_UNDEF
3854 && (input_section->flags & SEC_ALLOC) != 0
3855 && !is_vxworks_tls
3856 && (r_type == R_SH_DIR32
3857 || !SYMBOL_CALLS_LOCAL (info, h)))
3858 {
3859 Elf_Internal_Rela outrel;
3860 bfd_byte *loc;
3861 bfd_boolean skip, relocate;
3862
3863 /* When generating a shared object, these relocations
3864 are copied into the output file to be resolved at run
3865 time. */
3866
3867 if (sreloc == NULL)
3868 {
3869 sreloc = _bfd_elf_get_dynamic_reloc_section
3870 (input_bfd, input_section, /*rela?*/ TRUE);
3871 if (sreloc == NULL)
3872 return FALSE;
3873 }
3874
3875 skip = FALSE;
3876 relocate = FALSE;
3877
3878 outrel.r_offset =
3879 _bfd_elf_section_offset (output_bfd, info, input_section,
3880 rel->r_offset);
3881 if (outrel.r_offset == (bfd_vma) -1)
3882 skip = TRUE;
3883 else if (outrel.r_offset == (bfd_vma) -2)
3884 skip = TRUE, relocate = TRUE;
3885 outrel.r_offset += (input_section->output_section->vma
3886 + input_section->output_offset);
3887
3888 if (skip)
3889 memset (&outrel, 0, sizeof outrel);
3890 else if (r_type == R_SH_REL32)
3891 {
3892 BFD_ASSERT (h != NULL && h->dynindx != -1);
3893 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
3894 outrel.r_addend
3895 = (howto->partial_inplace
3896 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3897 : addend);
3898 }
3899 else if (fdpic_p
3900 && (h == NULL
3901 || ((info->symbolic || h->dynindx == -1)
3902 && h->def_regular)))
3903 {
3904 int dynindx;
3905
3906 BFD_ASSERT (sec != NULL);
3907 BFD_ASSERT (sec->output_section != NULL);
3908 dynindx = elf_section_data (sec->output_section)->dynindx;
3909 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
3910 outrel.r_addend = relocation;
3911 outrel.r_addend
3912 += (howto->partial_inplace
3913 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3914 : addend);
3915 outrel.r_addend -= sec->output_section->vma;
3916 }
3917 else
3918 {
3919 /* h->dynindx may be -1 if this symbol was marked to
3920 become local. */
3921 if (h == NULL
3922 || ((info->symbolic || h->dynindx == -1)
3923 && h->def_regular))
3924 {
3925 relocate = howto->partial_inplace;
3926 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3927 }
3928 else
3929 {
3930 BFD_ASSERT (h->dynindx != -1);
3931 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
3932 }
3933 outrel.r_addend = relocation;
3934 outrel.r_addend
3935 += (howto->partial_inplace
3936 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3937 : addend);
3938 }
3939
3940 loc = sreloc->contents;
3941 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3942 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3943
3944 check_segment[0] = check_segment[1] = -1;
3945
3946 /* If this reloc is against an external symbol, we do
3947 not want to fiddle with the addend. Otherwise, we
3948 need to include the symbol value so that it becomes
3949 an addend for the dynamic reloc. */
3950 if (! relocate)
3951 continue;
3952 }
3953 else if (fdpic_p && !bfd_link_pic (info)
3954 && r_type == R_SH_DIR32
3955 && (input_section->flags & SEC_ALLOC) != 0)
3956 {
3957 bfd_vma offset;
3958
3959 BFD_ASSERT (htab);
3960
3961 if (sh_elf_osec_readonly_p (output_bfd,
3962 input_section->output_section))
3963 {
3964 _bfd_error_handler
3965 /* xgettext:c-format */
3966 (_("%pB(%pA+%#" PRIx64 "): "
3967 "cannot emit fixup to `%s' in read-only section"),
3968 input_bfd,
3969 input_section,
3970 (uint64_t) rel->r_offset,
3971 symname);
3972 return FALSE;
3973 }
3974
3975 offset = _bfd_elf_section_offset (output_bfd, info,
3976 input_section, rel->r_offset);
3977 if (offset != (bfd_vma)-1)
3978 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3979 input_section->output_section->vma
3980 + input_section->output_offset
3981 + rel->r_offset);
3982
3983 check_segment[0] = check_segment[1] = -1;
3984 }
3985 /* We don't want warnings for non-NULL tests on undefined weak
3986 symbols. */
3987 else if (r_type == R_SH_REL32
3988 && h
3989 && h->root.type == bfd_link_hash_undefweak)
3990 check_segment[0] = check_segment[1] = -1;
3991 goto final_link_relocate;
3992
3993 case R_SH_GOTPLT32:
3994 /* Relocation is to the entry for this symbol in the
3995 procedure linkage table. */
3996
3997 if (h == NULL
3998 || h->forced_local
3999 || ! bfd_link_pic (info)
4000 || info->symbolic
4001 || h->dynindx == -1
4002 || h->plt.offset == (bfd_vma) -1
4003 || h->got.offset != (bfd_vma) -1)
4004 goto force_got;
4005
4006 /* Relocation is to the entry for this symbol in the global
4007 offset table extension for the procedure linkage table. */
4008
4009 BFD_ASSERT (htab);
4010 BFD_ASSERT (sgotplt != NULL);
4011 relocation = (sgotplt->output_offset
4012 + (get_plt_index (htab->plt_info, h->plt.offset)
4013 + 3) * 4);
4014
4015 #ifdef GOT_BIAS
4016 relocation -= GOT_BIAS;
4017 #endif
4018
4019 goto final_link_relocate;
4020
4021 force_got:
4022 case R_SH_GOT32:
4023 case R_SH_GOT20:
4024 /* Relocation is to the entry for this symbol in the global
4025 offset table. */
4026
4027 BFD_ASSERT (htab);
4028 BFD_ASSERT (sgot != NULL);
4029 check_segment[0] = check_segment[1] = -1;
4030
4031 if (h != NULL)
4032 {
4033 bfd_boolean dyn;
4034
4035 off = h->got.offset;
4036 BFD_ASSERT (off != (bfd_vma) -1);
4037
4038 dyn = htab->root.dynamic_sections_created;
4039 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4040 bfd_link_pic (info),
4041 h)
4042 || (bfd_link_pic (info)
4043 && SYMBOL_REFERENCES_LOCAL (info, h))
4044 || ((ELF_ST_VISIBILITY (h->other)
4045 || resolved_to_zero)
4046 && h->root.type == bfd_link_hash_undefweak))
4047 {
4048 /* This is actually a static link, or it is a
4049 -Bsymbolic link and the symbol is defined
4050 locally, or the symbol was forced to be local
4051 because of a version file. We must initialize
4052 this entry in the global offset table. Since the
4053 offset must always be a multiple of 4, we use the
4054 least significant bit to record whether we have
4055 initialized it already.
4056
4057 When doing a dynamic link, we create a .rela.got
4058 relocation entry to initialize the value. This
4059 is done in the finish_dynamic_symbol routine. */
4060 if ((off & 1) != 0)
4061 off &= ~1;
4062 else
4063 {
4064 bfd_put_32 (output_bfd, relocation,
4065 sgot->contents + off);
4066 h->got.offset |= 1;
4067
4068 /* If we initialize the GOT entry here with a valid
4069 symbol address, also add a fixup. */
4070 if (fdpic_p && !bfd_link_pic (info)
4071 && sh_elf_hash_entry (h)->got_type == GOT_NORMAL
4072 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4073 || h->root.type != bfd_link_hash_undefweak))
4074 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4075 sgot->output_section->vma
4076 + sgot->output_offset
4077 + off);
4078 }
4079 }
4080
4081 relocation = sh_elf_got_offset (htab) + off;
4082 }
4083 else
4084 {
4085 BFD_ASSERT (local_got_offsets != NULL
4086 && local_got_offsets[r_symndx] != (bfd_vma) -1);
4087
4088 off = local_got_offsets[r_symndx];
4089
4090 /* The offset must always be a multiple of 4. We use
4091 the least significant bit to record whether we have
4092 already generated the necessary reloc. */
4093 if ((off & 1) != 0)
4094 off &= ~1;
4095 else
4096 {
4097 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4098
4099 if (bfd_link_pic (info))
4100 {
4101 Elf_Internal_Rela outrel;
4102 bfd_byte *loc;
4103
4104 outrel.r_offset = (sgot->output_section->vma
4105 + sgot->output_offset
4106 + off);
4107 if (fdpic_p)
4108 {
4109 int dynindx
4110 = elf_section_data (sec->output_section)->dynindx;
4111 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
4112 outrel.r_addend = relocation;
4113 outrel.r_addend -= sec->output_section->vma;
4114 }
4115 else
4116 {
4117 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
4118 outrel.r_addend = relocation;
4119 }
4120 loc = srelgot->contents;
4121 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4122 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4123 }
4124 else if (fdpic_p
4125 && (sh_elf_local_got_type (input_bfd) [r_symndx]
4126 == GOT_NORMAL))
4127 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4128 sgot->output_section->vma
4129 + sgot->output_offset
4130 + off);
4131
4132 local_got_offsets[r_symndx] |= 1;
4133 }
4134
4135 relocation = sh_elf_got_offset (htab) + off;
4136 }
4137
4138 #ifdef GOT_BIAS
4139 relocation -= GOT_BIAS;
4140 #endif
4141
4142 if (r_type == R_SH_GOT20)
4143 {
4144 r = install_movi20_field (output_bfd, relocation + addend,
4145 input_bfd, input_section, contents,
4146 rel->r_offset);
4147 break;
4148 }
4149 else
4150 goto final_link_relocate;
4151
4152 case R_SH_GOTOFF:
4153 case R_SH_GOTOFF20:
4154 /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
4155 we place at the start of the .got.plt section. This is the same
4156 as the start of the output .got section, unless there are function
4157 descriptors in front of it. */
4158 BFD_ASSERT (htab);
4159 BFD_ASSERT (sgotplt != NULL);
4160 check_segment[0] = got_segment;
4161 relocation -= sgotplt->output_section->vma + sgotplt->output_offset
4162 + htab->root.hgot->root.u.def.value;
4163
4164 #ifdef GOT_BIAS
4165 relocation -= GOT_BIAS;
4166 #endif
4167
4168 addend = rel->r_addend;
4169
4170 if (r_type == R_SH_GOTOFF20)
4171 {
4172 r = install_movi20_field (output_bfd, relocation + addend,
4173 input_bfd, input_section, contents,
4174 rel->r_offset);
4175 break;
4176 }
4177 else
4178 goto final_link_relocate;
4179
4180 case R_SH_GOTPC:
4181 /* Use global offset table as symbol value. */
4182
4183 BFD_ASSERT (sgotplt != NULL);
4184 relocation = sgotplt->output_section->vma + sgotplt->output_offset;
4185
4186 #ifdef GOT_BIAS
4187 relocation += GOT_BIAS;
4188 #endif
4189
4190 addend = rel->r_addend;
4191
4192 goto final_link_relocate;
4193
4194 case R_SH_PLT32:
4195 /* Relocation is to the entry for this symbol in the
4196 procedure linkage table. */
4197
4198 /* Resolve a PLT reloc against a local symbol directly,
4199 without using the procedure linkage table. */
4200 if (h == NULL)
4201 goto final_link_relocate;
4202
4203 /* We don't want to warn on calls to undefined weak symbols,
4204 as calls to them must be protected by non-NULL tests
4205 anyway, and unprotected calls would invoke undefined
4206 behavior. */
4207 if (h->root.type == bfd_link_hash_undefweak)
4208 check_segment[0] = check_segment[1] = -1;
4209
4210 if (h->forced_local)
4211 goto final_link_relocate;
4212
4213 if (h->plt.offset == (bfd_vma) -1)
4214 {
4215 /* We didn't make a PLT entry for this symbol. This
4216 happens when statically linking PIC code, or when
4217 using -Bsymbolic. */
4218 goto final_link_relocate;
4219 }
4220
4221 BFD_ASSERT (splt != NULL);
4222 check_segment[1] = plt_segment;
4223 relocation = (splt->output_section->vma
4224 + splt->output_offset
4225 + h->plt.offset);
4226
4227 addend = rel->r_addend;
4228
4229 goto final_link_relocate;
4230
4231 /* Relocation is to the canonical function descriptor for this
4232 symbol, possibly via the GOT. Initialize the GOT
4233 entry and function descriptor if necessary. */
4234 case R_SH_GOTFUNCDESC:
4235 case R_SH_GOTFUNCDESC20:
4236 case R_SH_FUNCDESC:
4237 {
4238 int dynindx = -1;
4239 asection *reloc_section;
4240 bfd_vma reloc_offset;
4241 int reloc_type = R_SH_FUNCDESC;
4242
4243 BFD_ASSERT (htab);
4244
4245 check_segment[0] = check_segment[1] = -1;
4246
4247 /* FIXME: See what FRV does for global symbols in the
4248 executable, with --export-dynamic. Do they need ld.so
4249 to allocate official descriptors? See what this code
4250 does. */
4251
4252 relocation = 0;
4253 addend = 0;
4254
4255 if (r_type == R_SH_FUNCDESC)
4256 {
4257 reloc_section = input_section;
4258 reloc_offset = rel->r_offset;
4259 }
4260 else
4261 {
4262 reloc_section = sgot;
4263
4264 if (h != NULL)
4265 reloc_offset = h->got.offset;
4266 else
4267 {
4268 BFD_ASSERT (local_got_offsets != NULL);
4269 reloc_offset = local_got_offsets[r_symndx];
4270 }
4271 BFD_ASSERT (reloc_offset != MINUS_ONE);
4272
4273 if (reloc_offset & 1)
4274 {
4275 reloc_offset &= ~1;
4276 goto funcdesc_done_got;
4277 }
4278 }
4279
4280 if (h && h->root.type == bfd_link_hash_undefweak
4281 && (SYMBOL_CALLS_LOCAL (info, h)
4282 || !htab->root.dynamic_sections_created))
4283 /* Undefined weak symbol which will not be dynamically
4284 resolved later; leave it at zero. */
4285 goto funcdesc_leave_zero;
4286 else if (SYMBOL_CALLS_LOCAL (info, h)
4287 && ! SYMBOL_FUNCDESC_LOCAL (info, h))
4288 {
4289 /* If the symbol needs a non-local function descriptor
4290 but binds locally (i.e., its visibility is
4291 protected), emit a dynamic relocation decayed to
4292 section+offset. This is an optimization; the dynamic
4293 linker would resolve our function descriptor request
4294 to our copy of the function anyway. */
4295 dynindx = elf_section_data (h->root.u.def.section
4296 ->output_section)->dynindx;
4297 relocation += h->root.u.def.section->output_offset
4298 + h->root.u.def.value;
4299 }
4300 else if (! SYMBOL_FUNCDESC_LOCAL (info, h))
4301 {
4302 /* If the symbol is dynamic and there will be dynamic
4303 symbol resolution because we are or are linked with a
4304 shared library, emit a FUNCDESC relocation such that
4305 the dynamic linker will allocate the function
4306 descriptor. */
4307 BFD_ASSERT (h->dynindx != -1);
4308 dynindx = h->dynindx;
4309 }
4310 else
4311 {
4312 bfd_vma offset;
4313
4314 /* Otherwise, we know we have a private function
4315 descriptor, so reference it directly. */
4316 reloc_type = R_SH_DIR32;
4317 dynindx = elf_section_data (htab->sfuncdesc
4318 ->output_section)->dynindx;
4319
4320 if (h)
4321 {
4322 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4323 BFD_ASSERT (offset != MINUS_ONE);
4324 if ((offset & 1) == 0)
4325 {
4326 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4327 offset, NULL, 0))
4328 return FALSE;
4329 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4330 }
4331 }
4332 else
4333 {
4334 union gotref *local_funcdesc;
4335
4336 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4337 offset = local_funcdesc[r_symndx].offset;
4338 BFD_ASSERT (offset != MINUS_ONE);
4339 if ((offset & 1) == 0)
4340 {
4341 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4342 offset, sec,
4343 sym->st_value))
4344 return FALSE;
4345 local_funcdesc[r_symndx].offset |= 1;
4346 }
4347 }
4348
4349 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4350 }
4351
4352 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
4353 {
4354 bfd_vma offset;
4355
4356 if (sh_elf_osec_readonly_p (output_bfd,
4357 reloc_section->output_section))
4358 {
4359 _bfd_error_handler
4360 /* xgettext:c-format */
4361 (_("%pB(%pA+%#" PRIx64 "): "
4362 "cannot emit fixup to `%s' in read-only section"),
4363 input_bfd,
4364 input_section,
4365 (uint64_t) rel->r_offset,
4366 symname);
4367 return FALSE;
4368 }
4369
4370 offset = _bfd_elf_section_offset (output_bfd, info,
4371 reloc_section, reloc_offset);
4372
4373 if (offset != (bfd_vma)-1)
4374 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4375 offset
4376 + reloc_section->output_section->vma
4377 + reloc_section->output_offset);
4378 }
4379 else if ((reloc_section->output_section->flags
4380 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
4381 {
4382 bfd_vma offset;
4383
4384 if (sh_elf_osec_readonly_p (output_bfd,
4385 reloc_section->output_section))
4386 {
4387 info->callbacks->warning
4388 (info,
4389 _("cannot emit dynamic relocations in read-only section"),
4390 symname, input_bfd, reloc_section, reloc_offset);
4391 return FALSE;
4392 }
4393
4394 offset = _bfd_elf_section_offset (output_bfd, info,
4395 reloc_section, reloc_offset);
4396
4397 if (offset != (bfd_vma)-1)
4398 sh_elf_add_dyn_reloc (output_bfd, srelgot,
4399 offset
4400 + reloc_section->output_section->vma
4401 + reloc_section->output_offset,
4402 reloc_type, dynindx, relocation);
4403
4404 if (r_type == R_SH_FUNCDESC)
4405 {
4406 r = bfd_reloc_ok;
4407 break;
4408 }
4409 else
4410 {
4411 relocation = 0;
4412 goto funcdesc_leave_zero;
4413 }
4414 }
4415
4416 if (SYMBOL_FUNCDESC_LOCAL (info, h))
4417 relocation += htab->sfuncdesc->output_section->vma;
4418 funcdesc_leave_zero:
4419 if (r_type != R_SH_FUNCDESC)
4420 {
4421 bfd_put_32 (output_bfd, relocation,
4422 reloc_section->contents + reloc_offset);
4423 if (h != NULL)
4424 h->got.offset |= 1;
4425 else
4426 local_got_offsets[r_symndx] |= 1;
4427
4428 funcdesc_done_got:
4429
4430 relocation = sh_elf_got_offset (htab) + reloc_offset;
4431 #ifdef GOT_BIAS
4432 relocation -= GOT_BIAS;
4433 #endif
4434 }
4435 if (r_type == R_SH_GOTFUNCDESC20)
4436 {
4437 r = install_movi20_field (output_bfd, relocation + addend,
4438 input_bfd, input_section, contents,
4439 rel->r_offset);
4440 break;
4441 }
4442 else
4443 goto final_link_relocate;
4444 }
4445 break;
4446
4447 case R_SH_GOTOFFFUNCDESC:
4448 case R_SH_GOTOFFFUNCDESC20:
4449 /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
4450 executable and --export-dynamic. If such symbols get
4451 ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
4452 for them. */
4453 BFD_ASSERT (htab);
4454
4455 check_segment[0] = check_segment[1] = -1;
4456 relocation = 0;
4457 addend = rel->r_addend;
4458
4459 if (h && (h->root.type == bfd_link_hash_undefweak
4460 || !SYMBOL_FUNCDESC_LOCAL (info, h)))
4461 {
4462 _bfd_error_handler
4463 /* xgettext:c-format */
4464 (_("%pB(%pA+%#" PRIx64 "): "
4465 "%s relocation against external symbol \"%s\""),
4466 input_bfd, input_section, (uint64_t) rel->r_offset,
4467 howto->name, h->root.root.string);
4468 return FALSE;
4469 }
4470 else
4471 {
4472 bfd_vma offset;
4473
4474 /* Otherwise, we know we have a private function
4475 descriptor, so reference it directly. */
4476 if (h)
4477 {
4478 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4479 BFD_ASSERT (offset != MINUS_ONE);
4480 if ((offset & 1) == 0)
4481 {
4482 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4483 offset, NULL, 0))
4484 return FALSE;
4485 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4486 }
4487 }
4488 else
4489 {
4490 union gotref *local_funcdesc;
4491
4492 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4493 offset = local_funcdesc[r_symndx].offset;
4494 BFD_ASSERT (offset != MINUS_ONE);
4495 if ((offset & 1) == 0)
4496 {
4497 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4498 offset, sec,
4499 sym->st_value))
4500 return FALSE;
4501 local_funcdesc[r_symndx].offset |= 1;
4502 }
4503 }
4504
4505 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4506 }
4507
4508 relocation -= (htab->root.hgot->root.u.def.value
4509 + sgotplt->output_offset);
4510 #ifdef GOT_BIAS
4511 relocation -= GOT_BIAS;
4512 #endif
4513
4514 if (r_type == R_SH_GOTOFFFUNCDESC20)
4515 {
4516 r = install_movi20_field (output_bfd, relocation + addend,
4517 input_bfd, input_section, contents,
4518 rel->r_offset);
4519 break;
4520 }
4521 else
4522 goto final_link_relocate;
4523
4524 case R_SH_LOOP_START:
4525 {
4526 static bfd_vma start, end;
4527
4528 start = (relocation + rel->r_addend
4529 - (sec->output_section->vma + sec->output_offset));
4530 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4531 rel->r_offset, sec, start, end);
4532 break;
4533
4534 case R_SH_LOOP_END:
4535 end = (relocation + rel->r_addend
4536 - (sec->output_section->vma + sec->output_offset));
4537 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4538 rel->r_offset, sec, start, end);
4539 break;
4540 }
4541
4542 case R_SH_TLS_GD_32:
4543 case R_SH_TLS_IE_32:
4544 BFD_ASSERT (htab);
4545 check_segment[0] = check_segment[1] = -1;
4546 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4547 got_type = GOT_UNKNOWN;
4548 if (h == NULL && local_got_offsets)
4549 got_type = sh_elf_local_got_type (input_bfd) [r_symndx];
4550 else if (h != NULL)
4551 {
4552 got_type = sh_elf_hash_entry (h)->got_type;
4553 if (! bfd_link_pic (info)
4554 && (h->dynindx == -1
4555 || h->def_regular))
4556 r_type = R_SH_TLS_LE_32;
4557 }
4558
4559 if (r_type == R_SH_TLS_GD_32 && got_type == GOT_TLS_IE)
4560 r_type = R_SH_TLS_IE_32;
4561
4562 if (r_type == R_SH_TLS_LE_32)
4563 {
4564 bfd_vma offset;
4565 unsigned short insn;
4566
4567 if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4568 {
4569 /* GD->LE transition:
4570 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4571 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4572 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4573 We change it into:
4574 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4575 nop; nop; ...
4576 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4577
4578 offset = rel->r_offset;
4579 if (offset < 16)
4580 {
4581 _bfd_error_handler
4582 /* xgettext:c-format */
4583 (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64),
4584 input_bfd, input_section, (uint64_t) offset);
4585 return FALSE;
4586 }
4587
4588 /* Size of GD instructions is 16 or 18. */
4589 offset -= 16;
4590 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4591 if ((insn & 0xff00) == 0xc700)
4592 {
4593 BFD_ASSERT (offset >= 2);
4594 offset -= 2;
4595 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4596 }
4597
4598 if ((insn & 0xff00) != 0xd400)
4599 _bfd_error_handler
4600 /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */
4601 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd4?\?)"),
4602 input_bfd, input_section, (uint64_t) offset, (int) insn);
4603
4604 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4605
4606 if ((insn & 0xff00) != 0xc700)
4607 _bfd_error_handler
4608 /* xgettext:c-format */
4609 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xc7?\?)"),
4610 input_bfd, input_section, (uint64_t) offset, (int) insn);
4611
4612 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4613 if ((insn & 0xff00) != 0xd100)
4614 _bfd_error_handler
4615 /* xgettext:c-format */
4616 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd1?\?)"),
4617 input_bfd, input_section, (uint64_t) offset, (int) insn);
4618
4619 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4620 if (insn != 0x310c)
4621 _bfd_error_handler
4622 /* xgettext:c-format */
4623 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x310c)"),
4624 input_bfd, input_section, (uint64_t) offset, (int) insn);
4625
4626 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4627 if (insn != 0x410b)
4628 _bfd_error_handler
4629 /* xgettext:c-format */
4630 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x410b)"),
4631 input_bfd, input_section, (uint64_t) offset, (int) insn);
4632
4633 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4634 if (insn != 0x34cc)
4635 _bfd_error_handler
4636 /* xgettext:c-format */
4637 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x34cc)"),
4638 input_bfd, input_section, (uint64_t) offset, (int) insn);
4639
4640 bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4641 bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4642 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4643 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4644 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4645 }
4646 else
4647 {
4648 int target;
4649
4650 /* IE->LE transition:
4651 mov.l 1f,r0;
4652 stc gbr,rN;
4653 mov.l @(r0,r12),rM;
4654 bra 2f;
4655 add ...;
4656 .align 2;
4657 1: x@GOTTPOFF;
4658 2:
4659 We change it into:
4660 mov.l .Ln,rM;
4661 stc gbr,rN;
4662 nop;
4663 ...;
4664 1: x@TPOFF;
4665 2:. */
4666
4667 offset = rel->r_offset;
4668 if (offset < 16)
4669 {
4670 _bfd_error_handler
4671 /* xgettext:c-format */
4672 (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64),
4673 input_bfd, input_section, (uint64_t) offset);
4674 return FALSE;
4675 }
4676
4677 /* Size of IE instructions is 10 or 12. */
4678 offset -= 10;
4679 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4680 if ((insn & 0xf0ff) == 0x0012)
4681 {
4682 BFD_ASSERT (offset >= 2);
4683 offset -= 2;
4684 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4685 }
4686
4687 if ((insn & 0xff00) != 0xd000)
4688 _bfd_error_handler
4689 /* xgettext:c-format */
4690 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd0??: mov.l)"),
4691 input_bfd, input_section, (uint64_t) offset, (int) insn);
4692
4693 target = insn & 0x00ff;
4694
4695 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4696 if ((insn & 0xf0ff) != 0x0012)
4697 _bfd_error_handler
4698 /* xgettext:c-format */
4699 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?12: stc)"),
4700 input_bfd, input_section, (uint64_t) (offset + 2), (int) insn);
4701
4702 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4703 if ((insn & 0xf0ff) != 0x00ce)
4704 _bfd_error_handler
4705 /* xgettext:c-format */
4706 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?ce: mov.l)"),
4707 input_bfd, input_section, (uint64_t) (offset + 4), (int) insn);
4708
4709 insn = 0xd000 | (insn & 0x0f00) | target;
4710 bfd_put_16 (output_bfd, insn, contents + offset + 0);
4711 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4712 }
4713
4714 bfd_put_32 (output_bfd, tpoff (info, relocation),
4715 contents + rel->r_offset);
4716 continue;
4717 }
4718
4719 if (sgot == NULL || sgotplt == NULL)
4720 abort ();
4721
4722 if (h != NULL)
4723 off = h->got.offset;
4724 else
4725 {
4726 if (local_got_offsets == NULL)
4727 abort ();
4728
4729 off = local_got_offsets[r_symndx];
4730 }
4731
4732 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4733 if (r_type == R_SH_TLS_IE_32
4734 && ! htab->root.dynamic_sections_created)
4735 {
4736 off &= ~1;
4737 bfd_put_32 (output_bfd, tpoff (info, relocation),
4738 sgot->contents + off);
4739 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4740 contents + rel->r_offset);
4741 continue;
4742 }
4743
4744 if ((off & 1) != 0)
4745 off &= ~1;
4746 else
4747 {
4748 Elf_Internal_Rela outrel;
4749 bfd_byte *loc;
4750 int dr_type, indx;
4751
4752 outrel.r_offset = (sgot->output_section->vma
4753 + sgot->output_offset + off);
4754
4755 if (h == NULL || h->dynindx == -1)
4756 indx = 0;
4757 else
4758 indx = h->dynindx;
4759
4760 dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4761 R_SH_TLS_TPOFF32);
4762 if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4763 outrel.r_addend = relocation - dtpoff_base (info);
4764 else
4765 outrel.r_addend = 0;
4766 outrel.r_info = ELF32_R_INFO (indx, dr_type);
4767 loc = srelgot->contents;
4768 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4769 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4770
4771 if (r_type == R_SH_TLS_GD_32)
4772 {
4773 if (indx == 0)
4774 {
4775 bfd_put_32 (output_bfd,
4776 relocation - dtpoff_base (info),
4777 sgot->contents + off + 4);
4778 }
4779 else
4780 {
4781 outrel.r_info = ELF32_R_INFO (indx,
4782 R_SH_TLS_DTPOFF32);
4783 outrel.r_offset += 4;
4784 outrel.r_addend = 0;
4785 srelgot->reloc_count++;
4786 loc += sizeof (Elf32_External_Rela);
4787 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4788 }
4789 }
4790
4791 if (h != NULL)
4792 h->got.offset |= 1;
4793 else
4794 local_got_offsets[r_symndx] |= 1;
4795 }
4796
4797 if (off >= (bfd_vma) -2)
4798 abort ();
4799
4800 if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4801 relocation = sh_elf_got_offset (htab) + off;
4802 else
4803 {
4804 bfd_vma offset;
4805 unsigned short insn;
4806
4807 /* GD->IE transition:
4808 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4809 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4810 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4811 We change it into:
4812 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4813 nop; nop; bra 3f; nop; .align 2;
4814 1: .long x@TPOFF; 2:...; 3:. */
4815
4816 offset = rel->r_offset;
4817 if (offset < 16)
4818 {
4819 _bfd_error_handler
4820 /* xgettext:c-format */
4821 (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64),
4822 input_bfd, input_section, (uint64_t) offset);
4823 return FALSE;
4824 }
4825
4826 /* Size of GD instructions is 16 or 18. */
4827 offset -= 16;
4828 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4829 if ((insn & 0xff00) == 0xc700)
4830 {
4831 BFD_ASSERT (offset >= 2);
4832 offset -= 2;
4833 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4834 }
4835
4836 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4837
4838 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4839 bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4840
4841 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4842 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4843 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4844 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4845 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4846 BFD_ASSERT (insn == 0x310c);
4847 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4848 BFD_ASSERT (insn == 0x410b);
4849 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4850 BFD_ASSERT (insn == 0x34cc);
4851
4852 bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4853 bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4854 bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4855 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4856 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4857
4858 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4859 contents + rel->r_offset);
4860
4861 continue;
4862 }
4863
4864 addend = rel->r_addend;
4865
4866 goto final_link_relocate;
4867
4868 case R_SH_TLS_LD_32:
4869 BFD_ASSERT (htab);
4870 check_segment[0] = check_segment[1] = -1;
4871 if (! bfd_link_pic (info))
4872 {
4873 bfd_vma offset;
4874 unsigned short insn;
4875
4876 /* LD->LE transition:
4877 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4878 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4879 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4880 We change it into:
4881 stc gbr,r0; nop; nop; nop;
4882 nop; nop; bra 3f; ...; 3:. */
4883
4884 offset = rel->r_offset;
4885 if (offset < 16)
4886 {
4887 _bfd_error_handler
4888 /* xgettext:c-format */
4889 (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64),
4890 input_bfd, input_section, (uint64_t) offset);
4891 return FALSE;
4892 }
4893
4894 /* Size of LD instructions is 16 or 18. */
4895 offset -= 16;
4896 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4897 if ((insn & 0xff00) == 0xc700)
4898 {
4899 BFD_ASSERT (offset >= 2);
4900 offset -= 2;
4901 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4902 }
4903
4904 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4905 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4906 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4907 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4908 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4909 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4910 BFD_ASSERT (insn == 0x310c);
4911 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4912 BFD_ASSERT (insn == 0x410b);
4913 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4914 BFD_ASSERT (insn == 0x34cc);
4915
4916 bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
4917 bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
4918 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4919 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4920 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4921 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4922
4923 continue;
4924 }
4925
4926 if (sgot == NULL || sgotplt == NULL)
4927 abort ();
4928
4929 off = htab->tls_ldm_got.offset;
4930 if (off & 1)
4931 off &= ~1;
4932 else
4933 {
4934 Elf_Internal_Rela outrel;
4935 bfd_byte *loc;
4936
4937 outrel.r_offset = (sgot->output_section->vma
4938 + sgot->output_offset + off);
4939 outrel.r_addend = 0;
4940 outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
4941 loc = srelgot->contents;
4942 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4943 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4944 htab->tls_ldm_got.offset |= 1;
4945 }
4946
4947 relocation = sh_elf_got_offset (htab) + off;
4948 addend = rel->r_addend;
4949
4950 goto final_link_relocate;
4951
4952 case R_SH_TLS_LDO_32:
4953 check_segment[0] = check_segment[1] = -1;
4954 if (! bfd_link_pic (info))
4955 relocation = tpoff (info, relocation);
4956 else
4957 relocation -= dtpoff_base (info);
4958
4959 addend = rel->r_addend;
4960 goto final_link_relocate;
4961
4962 case R_SH_TLS_LE_32:
4963 {
4964 int indx;
4965 Elf_Internal_Rela outrel;
4966 bfd_byte *loc;
4967
4968 check_segment[0] = check_segment[1] = -1;
4969
4970 if (!bfd_link_dll (info))
4971 {
4972 relocation = tpoff (info, relocation);
4973 addend = rel->r_addend;
4974 goto final_link_relocate;
4975 }
4976
4977 if (sreloc == NULL)
4978 {
4979 sreloc = _bfd_elf_get_dynamic_reloc_section
4980 (input_bfd, input_section, /*rela?*/ TRUE);
4981 if (sreloc == NULL)
4982 return FALSE;
4983 }
4984
4985 if (h == NULL || h->dynindx == -1)
4986 indx = 0;
4987 else
4988 indx = h->dynindx;
4989
4990 outrel.r_offset = (input_section->output_section->vma
4991 + input_section->output_offset
4992 + rel->r_offset);
4993 outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
4994 if (indx == 0)
4995 outrel.r_addend = relocation - dtpoff_base (info);
4996 else
4997 outrel.r_addend = 0;
4998
4999 loc = sreloc->contents;
5000 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
5001 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5002 continue;
5003 }
5004 }
5005
5006 relocation_done:
5007 if (fdpic_p && check_segment[0] != (unsigned) -1
5008 && check_segment[0] != check_segment[1])
5009 {
5010 /* We don't want duplicate errors for undefined symbols. */
5011 if (!h || h->root.type != bfd_link_hash_undefined)
5012 {
5013 if (bfd_link_pic (info))
5014 {
5015 info->callbacks->einfo
5016 /* xgettext:c-format */
5017 (_("%X%C: relocation to \"%s\" references a different segment\n"),
5018 input_bfd, input_section, rel->r_offset, symname);
5019 return FALSE;
5020 }
5021 else
5022 info->callbacks->einfo
5023 /* xgettext:c-format */
5024 (_("%C: warning: relocation to \"%s\" references a different segment\n"),
5025 input_bfd, input_section, rel->r_offset, symname);
5026 }
5027
5028 elf_elfheader (output_bfd)->e_flags |= EF_SH_PIC;
5029 }
5030
5031 if (r != bfd_reloc_ok)
5032 {
5033 switch (r)
5034 {
5035 default:
5036 case bfd_reloc_outofrange:
5037 abort ();
5038 case bfd_reloc_overflow:
5039 {
5040 const char *name;
5041
5042 if (h != NULL)
5043 name = NULL;
5044 else
5045 {
5046 name = (bfd_elf_string_from_elf_section
5047 (input_bfd, symtab_hdr->sh_link, sym->st_name));
5048 if (name == NULL)
5049 return FALSE;
5050 if (*name == '\0')
5051 name = bfd_section_name (sec);
5052 }
5053 (*info->callbacks->reloc_overflow)
5054 (info, (h ? &h->root : NULL), name, howto->name,
5055 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
5056 }
5057 break;
5058 }
5059 }
5060 }
5061
5062 return TRUE;
5063 }
5064
5065 /* This is a version of bfd_generic_get_relocated_section_contents
5066 which uses sh_elf_relocate_section. */
5067
5068 static bfd_byte *
5069 sh_elf_get_relocated_section_contents (bfd *output_bfd,
5070 struct bfd_link_info *link_info,
5071 struct bfd_link_order *link_order,
5072 bfd_byte *data,
5073 bfd_boolean relocatable,
5074 asymbol **symbols)
5075 {
5076 Elf_Internal_Shdr *symtab_hdr;
5077 asection *input_section = link_order->u.indirect.section;
5078 bfd *input_bfd = input_section->owner;
5079 asection **sections = NULL;
5080 Elf_Internal_Rela *internal_relocs = NULL;
5081 Elf_Internal_Sym *isymbuf = NULL;
5082
5083 /* We only need to handle the case of relaxing, or of having a
5084 particular set of section contents, specially. */
5085 if (relocatable
5086 || elf_section_data (input_section)->this_hdr.contents == NULL)
5087 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
5088 link_order, data,
5089 relocatable,
5090 symbols);
5091
5092 symtab_hdr = &elf_symtab_hdr (input_bfd);
5093
5094 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
5095 (size_t) input_section->size);
5096
5097 if ((input_section->flags & SEC_RELOC) != 0
5098 && input_section->reloc_count > 0)
5099 {
5100 asection **secpp;
5101 Elf_Internal_Sym *isym, *isymend;
5102 bfd_size_type amt;
5103
5104 internal_relocs = (_bfd_elf_link_read_relocs
5105 (input_bfd, input_section, NULL,
5106 (Elf_Internal_Rela *) NULL, FALSE));
5107 if (internal_relocs == NULL)
5108 goto error_return;
5109
5110 if (symtab_hdr->sh_info != 0)
5111 {
5112 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5113 if (isymbuf == NULL)
5114 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
5115 symtab_hdr->sh_info, 0,
5116 NULL, NULL, NULL);
5117 if (isymbuf == NULL)
5118 goto error_return;
5119 }
5120
5121 amt = symtab_hdr->sh_info;
5122 amt *= sizeof (asection *);
5123 sections = (asection **) bfd_malloc (amt);
5124 if (sections == NULL && amt != 0)
5125 goto error_return;
5126
5127 isymend = isymbuf + symtab_hdr->sh_info;
5128 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
5129 {
5130 asection *isec;
5131
5132 if (isym->st_shndx == SHN_UNDEF)
5133 isec = bfd_und_section_ptr;
5134 else if (isym->st_shndx == SHN_ABS)
5135 isec = bfd_abs_section_ptr;
5136 else if (isym->st_shndx == SHN_COMMON)
5137 isec = bfd_com_section_ptr;
5138 else
5139 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
5140
5141 *secpp = isec;
5142 }
5143
5144 if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
5145 input_section, data, internal_relocs,
5146 isymbuf, sections))
5147 goto error_return;
5148
5149 free (sections);
5150 if (symtab_hdr->contents != (unsigned char *) isymbuf)
5151 free (isymbuf);
5152 if (elf_section_data (input_section)->relocs != internal_relocs)
5153 free (internal_relocs);
5154 }
5155
5156 return data;
5157
5158 error_return:
5159 free (sections);
5160 if (symtab_hdr->contents != (unsigned char *) isymbuf)
5161 free (isymbuf);
5162 if (elf_section_data (input_section)->relocs != internal_relocs)
5163 free (internal_relocs);
5164 return NULL;
5165 }
5166
5167 /* Return the base VMA address which should be subtracted from real addresses
5168 when resolving @dtpoff relocation.
5169 This is PT_TLS segment p_vaddr. */
5170
5171 static bfd_vma
5172 dtpoff_base (struct bfd_link_info *info)
5173 {
5174 /* If tls_sec is NULL, we should have signalled an error already. */
5175 if (elf_hash_table (info)->tls_sec == NULL)
5176 return 0;
5177 return elf_hash_table (info)->tls_sec->vma;
5178 }
5179
5180 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
5181
5182 static bfd_vma
5183 tpoff (struct bfd_link_info *info, bfd_vma address)
5184 {
5185 /* If tls_sec is NULL, we should have signalled an error already. */
5186 if (elf_hash_table (info)->tls_sec == NULL)
5187 return 0;
5188 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
5189 structure which has 2 pointer fields. */
5190 return (address - elf_hash_table (info)->tls_sec->vma
5191 + align_power ((bfd_vma) 8,
5192 elf_hash_table (info)->tls_sec->alignment_power));
5193 }
5194
5195 static asection *
5196 sh_elf_gc_mark_hook (asection *sec,
5197 struct bfd_link_info *info,
5198 Elf_Internal_Rela *rel,
5199 struct elf_link_hash_entry *h,
5200 Elf_Internal_Sym *sym)
5201 {
5202 if (h != NULL)
5203 switch (ELF32_R_TYPE (rel->r_info))
5204 {
5205 case R_SH_GNU_VTINHERIT:
5206 case R_SH_GNU_VTENTRY:
5207 return NULL;
5208 }
5209
5210 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5211 }
5212
5213 /* Copy the extra info we tack onto an elf_link_hash_entry. */
5214
5215 static void
5216 sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
5217 struct elf_link_hash_entry *dir,
5218 struct elf_link_hash_entry *ind)
5219 {
5220 struct elf_sh_link_hash_entry *edir, *eind;
5221
5222 edir = (struct elf_sh_link_hash_entry *) dir;
5223 eind = (struct elf_sh_link_hash_entry *) ind;
5224
5225 edir->gotplt_refcount = eind->gotplt_refcount;
5226 eind->gotplt_refcount = 0;
5227 edir->funcdesc.refcount += eind->funcdesc.refcount;
5228 eind->funcdesc.refcount = 0;
5229 edir->abs_funcdesc_refcount += eind->abs_funcdesc_refcount;
5230 eind->abs_funcdesc_refcount = 0;
5231
5232 if (ind->root.type == bfd_link_hash_indirect
5233 && dir->got.refcount <= 0)
5234 {
5235 edir->got_type = eind->got_type;
5236 eind->got_type = GOT_UNKNOWN;
5237 }
5238
5239 if (ind->root.type != bfd_link_hash_indirect
5240 && dir->dynamic_adjusted)
5241 {
5242 /* If called to transfer flags for a weakdef during processing
5243 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
5244 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
5245 if (dir->versioned != versioned_hidden)
5246 dir->ref_dynamic |= ind->ref_dynamic;
5247 dir->ref_regular |= ind->ref_regular;
5248 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
5249 dir->needs_plt |= ind->needs_plt;
5250 }
5251 else
5252 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
5253 }
5254
5255 static int
5256 sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
5257 int is_local)
5258 {
5259 if (bfd_link_pic (info))
5260 return r_type;
5261
5262 switch (r_type)
5263 {
5264 case R_SH_TLS_GD_32:
5265 case R_SH_TLS_IE_32:
5266 if (is_local)
5267 return R_SH_TLS_LE_32;
5268 return R_SH_TLS_IE_32;
5269 case R_SH_TLS_LD_32:
5270 return R_SH_TLS_LE_32;
5271 }
5272
5273 return r_type;
5274 }
5275
5276 /* Look through the relocs for a section during the first phase.
5277 Since we don't do .gots or .plts, we just need to consider the
5278 virtual table relocs for gc. */
5279
5280 static bfd_boolean
5281 sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
5282 const Elf_Internal_Rela *relocs)
5283 {
5284 Elf_Internal_Shdr *symtab_hdr;
5285 struct elf_link_hash_entry **sym_hashes;
5286 struct elf_sh_link_hash_table *htab;
5287 const Elf_Internal_Rela *rel;
5288 const Elf_Internal_Rela *rel_end;
5289 asection *sreloc;
5290 unsigned int r_type;
5291 enum got_type got_type, old_got_type;
5292
5293 sreloc = NULL;
5294
5295 if (bfd_link_relocatable (info))
5296 return TRUE;
5297
5298 BFD_ASSERT (is_sh_elf (abfd));
5299
5300 symtab_hdr = &elf_symtab_hdr (abfd);
5301 sym_hashes = elf_sym_hashes (abfd);
5302
5303 htab = sh_elf_hash_table (info);
5304 if (htab == NULL)
5305 return FALSE;
5306
5307 rel_end = relocs + sec->reloc_count;
5308 for (rel = relocs; rel < rel_end; rel++)
5309 {
5310 struct elf_link_hash_entry *h;
5311 unsigned long r_symndx;
5312
5313 r_symndx = ELF32_R_SYM (rel->r_info);
5314 r_type = ELF32_R_TYPE (rel->r_info);
5315
5316 if (r_symndx < symtab_hdr->sh_info)
5317 h = NULL;
5318 else
5319 {
5320 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5321 while (h->root.type == bfd_link_hash_indirect
5322 || h->root.type == bfd_link_hash_warning)
5323 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5324 }
5325
5326 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
5327 if (! bfd_link_pic (info)
5328 && r_type == R_SH_TLS_IE_32
5329 && h != NULL
5330 && h->root.type != bfd_link_hash_undefined
5331 && h->root.type != bfd_link_hash_undefweak
5332 && (h->dynindx == -1
5333 || h->def_regular))
5334 r_type = R_SH_TLS_LE_32;
5335
5336 if (htab->fdpic_p)
5337 switch (r_type)
5338 {
5339 case R_SH_GOTOFFFUNCDESC:
5340 case R_SH_GOTOFFFUNCDESC20:
5341 case R_SH_FUNCDESC:
5342 case R_SH_GOTFUNCDESC:
5343 case R_SH_GOTFUNCDESC20:
5344 if (h != NULL)
5345 {
5346 if (h->dynindx == -1)
5347 switch (ELF_ST_VISIBILITY (h->other))
5348 {
5349 case STV_INTERNAL:
5350 case STV_HIDDEN:
5351 break;
5352 default:
5353 bfd_elf_link_record_dynamic_symbol (info, h);
5354 break;
5355 }
5356 }
5357 break;
5358 }
5359
5360 /* Some relocs require a global offset table. */
5361 if (htab->root.sgot == NULL)
5362 {
5363 switch (r_type)
5364 {
5365 case R_SH_DIR32:
5366 /* This may require an rofixup. */
5367 if (!htab->fdpic_p)
5368 break;
5369 /* Fall through. */
5370 case R_SH_GOTPLT32:
5371 case R_SH_GOT32:
5372 case R_SH_GOT20:
5373 case R_SH_GOTOFF:
5374 case R_SH_GOTOFF20:
5375 case R_SH_FUNCDESC:
5376 case R_SH_GOTFUNCDESC:
5377 case R_SH_GOTFUNCDESC20:
5378 case R_SH_GOTOFFFUNCDESC:
5379 case R_SH_GOTOFFFUNCDESC20:
5380 case R_SH_GOTPC:
5381 case R_SH_TLS_GD_32:
5382 case R_SH_TLS_LD_32:
5383 case R_SH_TLS_IE_32:
5384 if (htab->root.dynobj == NULL)
5385 htab->root.dynobj = abfd;
5386 if (!create_got_section (htab->root.dynobj, info))
5387 return FALSE;
5388 break;
5389
5390 default:
5391 break;
5392 }
5393 }
5394
5395 switch (r_type)
5396 {
5397 /* This relocation describes the C++ object vtable hierarchy.
5398 Reconstruct it for later use during GC. */
5399 case R_SH_GNU_VTINHERIT:
5400 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5401 return FALSE;
5402 break;
5403
5404 /* This relocation describes which C++ vtable entries are actually
5405 used. Record for later use during GC. */
5406 case R_SH_GNU_VTENTRY:
5407 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5408 return FALSE;
5409 break;
5410
5411 case R_SH_TLS_IE_32:
5412 if (bfd_link_pic (info))
5413 info->flags |= DF_STATIC_TLS;
5414
5415 /* FALLTHROUGH */
5416 force_got:
5417 case R_SH_TLS_GD_32:
5418 case R_SH_GOT32:
5419 case R_SH_GOT20:
5420 case R_SH_GOTFUNCDESC:
5421 case R_SH_GOTFUNCDESC20:
5422 switch (r_type)
5423 {
5424 default:
5425 got_type = GOT_NORMAL;
5426 break;
5427 case R_SH_TLS_GD_32:
5428 got_type = GOT_TLS_GD;
5429 break;
5430 case R_SH_TLS_IE_32:
5431 got_type = GOT_TLS_IE;
5432 break;
5433 case R_SH_GOTFUNCDESC:
5434 case R_SH_GOTFUNCDESC20:
5435 got_type = GOT_FUNCDESC;
5436 break;
5437 }
5438
5439 if (h != NULL)
5440 {
5441 h->got.refcount += 1;
5442 old_got_type = sh_elf_hash_entry (h)->got_type;
5443 }
5444 else
5445 {
5446 bfd_signed_vma *local_got_refcounts;
5447
5448 /* This is a global offset table entry for a local
5449 symbol. */
5450 local_got_refcounts = elf_local_got_refcounts (abfd);
5451 if (local_got_refcounts == NULL)
5452 {
5453 bfd_size_type size;
5454
5455 size = symtab_hdr->sh_info;
5456 size *= sizeof (bfd_signed_vma);
5457 size += symtab_hdr->sh_info;
5458 local_got_refcounts = ((bfd_signed_vma *)
5459 bfd_zalloc (abfd, size));
5460 if (local_got_refcounts == NULL)
5461 return FALSE;
5462 elf_local_got_refcounts (abfd) = local_got_refcounts;
5463 sh_elf_local_got_type (abfd)
5464 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5465 }
5466 local_got_refcounts[r_symndx] += 1;
5467 old_got_type = sh_elf_local_got_type (abfd) [r_symndx];
5468 }
5469
5470 /* If a TLS symbol is accessed using IE at least once,
5471 there is no point to use dynamic model for it. */
5472 if (old_got_type != got_type && old_got_type != GOT_UNKNOWN
5473 && (old_got_type != GOT_TLS_GD || got_type != GOT_TLS_IE))
5474 {
5475 if (old_got_type == GOT_TLS_IE && got_type == GOT_TLS_GD)
5476 got_type = GOT_TLS_IE;
5477 else
5478 {
5479 if ((old_got_type == GOT_FUNCDESC || got_type == GOT_FUNCDESC)
5480 && (old_got_type == GOT_NORMAL || got_type == GOT_NORMAL))
5481 _bfd_error_handler
5482 /* xgettext:c-format */
5483 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5484 abfd, h->root.root.string);
5485 else if (old_got_type == GOT_FUNCDESC
5486 || got_type == GOT_FUNCDESC)
5487 _bfd_error_handler
5488 /* xgettext:c-format */
5489 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5490 abfd, h->root.root.string);
5491 else
5492 _bfd_error_handler
5493 /* xgettext:c-format */
5494 (_("%pB: `%s' accessed both as normal and thread local symbol"),
5495 abfd, h->root.root.string);
5496 return FALSE;
5497 }
5498 }
5499
5500 if (old_got_type != got_type)
5501 {
5502 if (h != NULL)
5503 sh_elf_hash_entry (h)->got_type = got_type;
5504 else
5505 sh_elf_local_got_type (abfd) [r_symndx] = got_type;
5506 }
5507
5508 break;
5509
5510 case R_SH_TLS_LD_32:
5511 sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5512 break;
5513
5514 case R_SH_FUNCDESC:
5515 case R_SH_GOTOFFFUNCDESC:
5516 case R_SH_GOTOFFFUNCDESC20:
5517 if (rel->r_addend)
5518 {
5519 _bfd_error_handler
5520 (_("%pB: Function descriptor relocation with non-zero addend"),
5521 abfd);
5522 return FALSE;
5523 }
5524
5525 if (h == NULL)
5526 {
5527 union gotref *local_funcdesc;
5528
5529 /* We need a function descriptor for a local symbol. */
5530 local_funcdesc = sh_elf_local_funcdesc (abfd);
5531 if (local_funcdesc == NULL)
5532 {
5533 bfd_size_type size;
5534
5535 size = symtab_hdr->sh_info * sizeof (union gotref);
5536 local_funcdesc = (union gotref *) bfd_zalloc (abfd, size);
5537 if (local_funcdesc == NULL)
5538 return FALSE;
5539 sh_elf_local_funcdesc (abfd) = local_funcdesc;
5540 }
5541 local_funcdesc[r_symndx].refcount += 1;
5542
5543 if (r_type == R_SH_FUNCDESC)
5544 {
5545 if (!bfd_link_pic (info))
5546 htab->srofixup->size += 4;
5547 else
5548 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
5549 }
5550 }
5551 else
5552 {
5553 sh_elf_hash_entry (h)->funcdesc.refcount++;
5554 if (r_type == R_SH_FUNCDESC)
5555 sh_elf_hash_entry (h)->abs_funcdesc_refcount++;
5556
5557 /* If there is a function descriptor reference, then
5558 there should not be any non-FDPIC references. */
5559 old_got_type = sh_elf_hash_entry (h)->got_type;
5560 if (old_got_type != GOT_FUNCDESC && old_got_type != GOT_UNKNOWN)
5561 {
5562 if (old_got_type == GOT_NORMAL)
5563 _bfd_error_handler
5564 /* xgettext:c-format */
5565 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5566 abfd, h->root.root.string);
5567 else
5568 _bfd_error_handler
5569 /* xgettext:c-format */
5570 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5571 abfd, h->root.root.string);
5572 }
5573 }
5574 break;
5575
5576 case R_SH_GOTPLT32:
5577 /* If this is a local symbol, we resolve it directly without
5578 creating a procedure linkage table entry. */
5579
5580 if (h == NULL
5581 || h->forced_local
5582 || ! bfd_link_pic (info)
5583 || info->symbolic
5584 || h->dynindx == -1)
5585 goto force_got;
5586
5587 h->needs_plt = 1;
5588 h->plt.refcount += 1;
5589 ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5590
5591 break;
5592
5593 case R_SH_PLT32:
5594 /* This symbol requires a procedure linkage table entry. We
5595 actually build the entry in adjust_dynamic_symbol,
5596 because this might be a case of linking PIC code which is
5597 never referenced by a dynamic object, in which case we
5598 don't need to generate a procedure linkage table entry
5599 after all. */
5600
5601 /* If this is a local symbol, we resolve it directly without
5602 creating a procedure linkage table entry. */
5603 if (h == NULL)
5604 continue;
5605
5606 if (h->forced_local)
5607 break;
5608
5609 h->needs_plt = 1;
5610 h->plt.refcount += 1;
5611 break;
5612
5613 case R_SH_DIR32:
5614 case R_SH_REL32:
5615 if (h != NULL && ! bfd_link_pic (info))
5616 {
5617 h->non_got_ref = 1;
5618 h->plt.refcount += 1;
5619 }
5620
5621 /* If we are creating a shared library, and this is a reloc
5622 against a global symbol, or a non PC relative reloc
5623 against a local symbol, then we need to copy the reloc
5624 into the shared library. However, if we are linking with
5625 -Bsymbolic, we do not need to copy a reloc against a
5626 global symbol which is defined in an object we are
5627 including in the link (i.e., DEF_REGULAR is set). At
5628 this point we have not seen all the input files, so it is
5629 possible that DEF_REGULAR is not set now but will be set
5630 later (it is never cleared). We account for that
5631 possibility below by storing information in the
5632 dyn_relocs field of the hash table entry. A similar
5633 situation occurs when creating shared libraries and symbol
5634 visibility changes render the symbol local.
5635
5636 If on the other hand, we are creating an executable, we
5637 may need to keep relocations for symbols satisfied by a
5638 dynamic library if we manage to avoid copy relocs for the
5639 symbol. */
5640 if ((bfd_link_pic (info)
5641 && (sec->flags & SEC_ALLOC) != 0
5642 && (r_type != R_SH_REL32
5643 || (h != NULL
5644 && (! info->symbolic
5645 || h->root.type == bfd_link_hash_defweak
5646 || !h->def_regular))))
5647 || (! bfd_link_pic (info)
5648 && (sec->flags & SEC_ALLOC) != 0
5649 && h != NULL
5650 && (h->root.type == bfd_link_hash_defweak
5651 || !h->def_regular)))
5652 {
5653 struct elf_dyn_relocs *p;
5654 struct elf_dyn_relocs **head;
5655
5656 if (htab->root.dynobj == NULL)
5657 htab->root.dynobj = abfd;
5658
5659 /* When creating a shared object, we must copy these
5660 reloc types into the output file. We create a reloc
5661 section in dynobj and make room for this reloc. */
5662 if (sreloc == NULL)
5663 {
5664 sreloc = _bfd_elf_make_dynamic_reloc_section
5665 (sec, htab->root.dynobj, 2, abfd, /*rela?*/ TRUE);
5666
5667 if (sreloc == NULL)
5668 return FALSE;
5669 }
5670
5671 /* If this is a global symbol, we count the number of
5672 relocations we need for this symbol. */
5673 if (h != NULL)
5674 head = &h->dyn_relocs;
5675 else
5676 {
5677 /* Track dynamic relocs needed for local syms too. */
5678 asection *s;
5679 void *vpp;
5680 Elf_Internal_Sym *isym;
5681
5682 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5683 abfd, r_symndx);
5684 if (isym == NULL)
5685 return FALSE;
5686
5687 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5688 if (s == NULL)
5689 s = sec;
5690
5691 vpp = &elf_section_data (s)->local_dynrel;
5692 head = (struct elf_dyn_relocs **) vpp;
5693 }
5694
5695 p = *head;
5696 if (p == NULL || p->sec != sec)
5697 {
5698 size_t amt = sizeof (*p);
5699 p = bfd_alloc (htab->root.dynobj, amt);
5700 if (p == NULL)
5701 return FALSE;
5702 p->next = *head;
5703 *head = p;
5704 p->sec = sec;
5705 p->count = 0;
5706 p->pc_count = 0;
5707 }
5708
5709 p->count += 1;
5710 if (r_type == R_SH_REL32)
5711 p->pc_count += 1;
5712 }
5713
5714 /* Allocate the fixup regardless of whether we need a relocation.
5715 If we end up generating the relocation, we'll unallocate the
5716 fixup. */
5717 if (htab->fdpic_p && !bfd_link_pic (info)
5718 && r_type == R_SH_DIR32
5719 && (sec->flags & SEC_ALLOC) != 0)
5720 htab->srofixup->size += 4;
5721 break;
5722
5723 case R_SH_TLS_LE_32:
5724 if (bfd_link_dll (info))
5725 {
5726 _bfd_error_handler
5727 (_("%pB: TLS local exec code cannot be linked into shared objects"),
5728 abfd);
5729 return FALSE;
5730 }
5731
5732 break;
5733
5734 case R_SH_TLS_LDO_32:
5735 /* Nothing to do. */
5736 break;
5737
5738 default:
5739 break;
5740 }
5741 }
5742
5743 return TRUE;
5744 }
5745
5746 #ifndef sh_elf_set_mach_from_flags
5747 static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5748
5749 static bfd_boolean
5750 sh_elf_set_mach_from_flags (bfd *abfd)
5751 {
5752 flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5753
5754 if (flags >= ARRAY_SIZE (sh_ef_bfd_table))
5755 return FALSE;
5756
5757 if (sh_ef_bfd_table[flags] == 0)
5758 return FALSE;
5759
5760 bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5761
5762 return TRUE;
5763 }
5764
5765
5766 /* Reverse table lookup for sh_ef_bfd_table[].
5767 Given a bfd MACH value from archures.c
5768 return the equivalent ELF flags from the table.
5769 Return -1 if no match is found. */
5770
5771 int
5772 sh_elf_get_flags_from_mach (unsigned long mach)
5773 {
5774 int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5775
5776 for (; i>0; i--)
5777 if (sh_ef_bfd_table[i] == mach)
5778 return i;
5779
5780 /* shouldn't get here */
5781 BFD_FAIL();
5782
5783 return -1;
5784 }
5785 #endif /* not sh_elf_set_mach_from_flags */
5786
5787 #ifndef sh_elf_copy_private_data
5788 /* Copy backend specific data from one object module to another */
5789
5790 static bfd_boolean
5791 sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5792 {
5793 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5794 return TRUE;
5795
5796 if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd))
5797 return FALSE;
5798
5799 return sh_elf_set_mach_from_flags (obfd);
5800 }
5801 #endif /* not sh_elf_copy_private_data */
5802
5803 #ifndef sh_elf_merge_private_data
5804
5805 /* This function returns the ELF architecture number that
5806 corresponds to the given arch_sh* flags. */
5807
5808 int
5809 sh_find_elf_flags (unsigned int arch_set)
5810 {
5811 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5812 unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5813
5814 return sh_elf_get_flags_from_mach (bfd_mach);
5815 }
5816
5817 /* Merge the architecture type of two BFD files, such that the
5818 resultant architecture supports all the features required
5819 by the two input BFDs.
5820 If the input BFDs are multually incompatible - i.e. one uses
5821 DSP while the other uses FPU - or there is no known architecture
5822 that fits the requirements then an error is emitted. */
5823
5824 static bfd_boolean
5825 sh_merge_bfd_arch (bfd *ibfd, struct bfd_link_info *info)
5826 {
5827 bfd *obfd = info->output_bfd;
5828 unsigned int old_arch, new_arch, merged_arch;
5829
5830 if (! _bfd_generic_verify_endian_match (ibfd, info))
5831 return FALSE;
5832
5833 old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
5834 new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));
5835
5836 merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);
5837
5838 if (!SH_VALID_CO_ARCH_SET (merged_arch))
5839 {
5840 _bfd_error_handler
5841 /* xgettext:c-format */
5842 (_("%pB: uses %s instructions while previous modules "
5843 "use %s instructions"),
5844 ibfd,
5845 SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
5846 SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
5847 bfd_set_error (bfd_error_bad_value);
5848 return FALSE;
5849 }
5850 else if (!SH_VALID_ARCH_SET (merged_arch))
5851 {
5852 _bfd_error_handler
5853 /* xgettext:c-format */
5854 (_("internal error: merge of architecture '%s' with "
5855 "architecture '%s' produced unknown architecture"),
5856 bfd_printable_name (obfd),
5857 bfd_printable_name (ibfd));
5858 bfd_set_error (bfd_error_bad_value);
5859 return FALSE;
5860 }
5861
5862 bfd_default_set_arch_mach (obfd, bfd_arch_sh,
5863 sh_get_bfd_mach_from_arch_set (merged_arch));
5864
5865 return TRUE;
5866 }
5867
5868 /* This routine initialises the elf flags when required and
5869 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5870
5871 static bfd_boolean
5872 sh_elf_merge_private_data (bfd *ibfd, struct bfd_link_info *info)
5873 {
5874 bfd *obfd = info->output_bfd;
5875
5876 /* FIXME: What should be checked when linking shared libraries? */
5877 if ((ibfd->flags & DYNAMIC) != 0)
5878 return TRUE;
5879
5880 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5881 return TRUE;
5882
5883 if (! elf_flags_init (obfd))
5884 {
5885 /* This happens when ld starts out with a 'blank' output file. */
5886 elf_flags_init (obfd) = TRUE;
5887 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
5888 sh_elf_set_mach_from_flags (obfd);
5889 if (elf_elfheader (obfd)->e_flags & EF_SH_FDPIC)
5890 elf_elfheader (obfd)->e_flags &= ~EF_SH_PIC;
5891 }
5892
5893 if (! sh_merge_bfd_arch (ibfd, info))
5894 {
5895 _bfd_error_handler (_("%pB: uses instructions which are incompatible "
5896 "with instructions used in previous modules"),
5897 ibfd);
5898 bfd_set_error (bfd_error_bad_value);
5899 return FALSE;
5900 }
5901
5902 elf_elfheader (obfd)->e_flags &= ~EF_SH_MACH_MASK;
5903 elf_elfheader (obfd)->e_flags |=
5904 sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
5905
5906 if (fdpic_object_p (ibfd) != fdpic_object_p (obfd))
5907 {
5908 _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"),
5909 ibfd);
5910 bfd_set_error (bfd_error_bad_value);
5911 return FALSE;
5912 }
5913
5914 return TRUE;
5915 }
5916 #endif /* not sh_elf_merge_private_data */
5917
5918 /* Override the generic function because we need to store sh_elf_obj_tdata
5919 as the specific tdata. We set also the machine architecture from flags
5920 here. */
5921
5922 static bfd_boolean
5923 sh_elf_object_p (bfd *abfd)
5924 {
5925 if (! sh_elf_set_mach_from_flags (abfd))
5926 return FALSE;
5927
5928 return (((elf_elfheader (abfd)->e_flags & EF_SH_FDPIC) != 0)
5929 == fdpic_object_p (abfd));
5930 }
5931
5932 /* Finish up dynamic symbol handling. We set the contents of various
5933 dynamic sections here. */
5934
5935 static bfd_boolean
5936 sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5937 struct elf_link_hash_entry *h,
5938 Elf_Internal_Sym *sym)
5939 {
5940 struct elf_sh_link_hash_table *htab;
5941
5942 htab = sh_elf_hash_table (info);
5943 if (htab == NULL)
5944 return FALSE;
5945
5946 if (h->plt.offset != (bfd_vma) -1)
5947 {
5948 asection *splt;
5949 asection *sgotplt;
5950 asection *srelplt;
5951
5952 bfd_vma plt_index;
5953 bfd_vma got_offset;
5954 Elf_Internal_Rela rel;
5955 bfd_byte *loc;
5956 const struct elf_sh_plt_info *plt_info;
5957
5958 /* This symbol has an entry in the procedure linkage table. Set
5959 it up. */
5960
5961 BFD_ASSERT (h->dynindx != -1);
5962
5963 splt = htab->root.splt;
5964 sgotplt = htab->root.sgotplt;
5965 srelplt = htab->root.srelplt;
5966 BFD_ASSERT (splt != NULL && sgotplt != NULL && srelplt != NULL);
5967
5968 /* Get the index in the procedure linkage table which
5969 corresponds to this symbol. This is the index of this symbol
5970 in all the symbols for which we are making plt entries. The
5971 first entry in the procedure linkage table is reserved. */
5972 plt_index = get_plt_index (htab->plt_info, h->plt.offset);
5973
5974 plt_info = htab->plt_info;
5975 if (plt_info->short_plt != NULL && plt_index <= MAX_SHORT_PLT)
5976 plt_info = plt_info->short_plt;
5977
5978 /* Get the offset into the .got table of the entry that
5979 corresponds to this function. */
5980 if (htab->fdpic_p)
5981 /* The offset must be relative to the GOT symbol, twelve bytes
5982 before the end of .got.plt. Each descriptor is eight
5983 bytes. */
5984 got_offset = plt_index * 8 + 12 - sgotplt->size;
5985 else
5986 /* Each .got entry is 4 bytes. The first three are
5987 reserved. */
5988 got_offset = (plt_index + 3) * 4;
5989
5990 #ifdef GOT_BIAS
5991 if (bfd_link_pic (info))
5992 got_offset -= GOT_BIAS;
5993 #endif
5994
5995 /* Fill in the entry in the procedure linkage table. */
5996 memcpy (splt->contents + h->plt.offset,
5997 plt_info->symbol_entry,
5998 plt_info->symbol_entry_size);
5999
6000 if (bfd_link_pic (info) || htab->fdpic_p)
6001 {
6002 if (plt_info->symbol_fields.got20)
6003 {
6004 bfd_reloc_status_type r;
6005 r = install_movi20_field (output_bfd, got_offset,
6006 splt->owner, splt, splt->contents,
6007 h->plt.offset
6008 + plt_info->symbol_fields.got_entry);
6009 BFD_ASSERT (r == bfd_reloc_ok);
6010 }
6011 else
6012 install_plt_field (output_bfd, FALSE, got_offset,
6013 (splt->contents
6014 + h->plt.offset
6015 + plt_info->symbol_fields.got_entry));
6016 }
6017 else
6018 {
6019 BFD_ASSERT (!plt_info->symbol_fields.got20);
6020
6021 install_plt_field (output_bfd, FALSE,
6022 (sgotplt->output_section->vma
6023 + sgotplt->output_offset
6024 + got_offset),
6025 (splt->contents
6026 + h->plt.offset
6027 + plt_info->symbol_fields.got_entry));
6028 if (htab->root.target_os == is_vxworks)
6029 {
6030 unsigned int reachable_plts, plts_per_4k;
6031 int distance;
6032
6033 /* Divide the PLT into groups. The first group contains
6034 REACHABLE_PLTS entries and the other groups contain
6035 PLTS_PER_4K entries. Entries in the first group can
6036 branch directly to .plt; those in later groups branch
6037 to the last element of the previous group. */
6038 /* ??? It would be better to create multiple copies of
6039 the common resolver stub. */
6040 reachable_plts = ((4096
6041 - plt_info->plt0_entry_size
6042 - (plt_info->symbol_fields.plt + 4))
6043 / plt_info->symbol_entry_size) + 1;
6044 plts_per_4k = (4096 / plt_info->symbol_entry_size);
6045 if (plt_index < reachable_plts)
6046 distance = -(h->plt.offset
6047 + plt_info->symbol_fields.plt);
6048 else
6049 distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
6050 * plt_info->symbol_entry_size);
6051
6052 /* Install the 'bra' with this offset. */
6053 bfd_put_16 (output_bfd,
6054 0xa000 | (0x0fff & ((distance - 4) / 2)),
6055 (splt->contents
6056 + h->plt.offset
6057 + plt_info->symbol_fields.plt));
6058 }
6059 else
6060 install_plt_field (output_bfd, TRUE,
6061 splt->output_section->vma + splt->output_offset,
6062 (splt->contents
6063 + h->plt.offset
6064 + plt_info->symbol_fields.plt));
6065 }
6066
6067 /* Make got_offset relative to the start of .got.plt. */
6068 #ifdef GOT_BIAS
6069 if (bfd_link_pic (info))
6070 got_offset += GOT_BIAS;
6071 #endif
6072 if (htab->fdpic_p)
6073 got_offset = plt_index * 8;
6074
6075 if (plt_info->symbol_fields.reloc_offset != MINUS_ONE)
6076 install_plt_field (output_bfd, FALSE,
6077 plt_index * sizeof (Elf32_External_Rela),
6078 (splt->contents
6079 + h->plt.offset
6080 + plt_info->symbol_fields.reloc_offset));
6081
6082 /* Fill in the entry in the global offset table. */
6083 bfd_put_32 (output_bfd,
6084 (splt->output_section->vma
6085 + splt->output_offset
6086 + h->plt.offset
6087 + plt_info->symbol_resolve_offset),
6088 sgotplt->contents + got_offset);
6089 if (htab->fdpic_p)
6090 bfd_put_32 (output_bfd,
6091 sh_elf_osec_to_segment (output_bfd, splt->output_section),
6092 sgotplt->contents + got_offset + 4);
6093
6094 /* Fill in the entry in the .rela.plt section. */
6095 rel.r_offset = (sgotplt->output_section->vma
6096 + sgotplt->output_offset
6097 + got_offset);
6098 if (htab->fdpic_p)
6099 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_FUNCDESC_VALUE);
6100 else
6101 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
6102 rel.r_addend = 0;
6103 #ifdef GOT_BIAS
6104 rel.r_addend = GOT_BIAS;
6105 #endif
6106 loc = srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
6107 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6108
6109 if (htab->root.target_os == is_vxworks && !bfd_link_pic (info))
6110 {
6111 /* Create the .rela.plt.unloaded relocations for this PLT entry.
6112 Begin by pointing LOC to the first such relocation. */
6113 loc = (htab->srelplt2->contents
6114 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
6115
6116 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
6117 for the PLT entry's pointer to the .got.plt entry. */
6118 rel.r_offset = (splt->output_section->vma
6119 + splt->output_offset
6120 + h->plt.offset
6121 + plt_info->symbol_fields.got_entry);
6122 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6123 rel.r_addend = got_offset;
6124 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6125 loc += sizeof (Elf32_External_Rela);
6126
6127 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
6128 the .got.plt entry, which initially points to .plt. */
6129 rel.r_offset = (sgotplt->output_section->vma
6130 + sgotplt->output_offset
6131 + got_offset);
6132 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
6133 rel.r_addend = 0;
6134 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6135 }
6136
6137 if (!h->def_regular)
6138 {
6139 /* Mark the symbol as undefined, rather than as defined in
6140 the .plt section. Leave the value alone. */
6141 sym->st_shndx = SHN_UNDEF;
6142 }
6143 }
6144
6145 if (h->got.offset != (bfd_vma) -1
6146 && sh_elf_hash_entry (h)->got_type != GOT_TLS_GD
6147 && sh_elf_hash_entry (h)->got_type != GOT_TLS_IE
6148 && sh_elf_hash_entry (h)->got_type != GOT_FUNCDESC)
6149 {
6150 asection *sgot;
6151 asection *srelgot;
6152 Elf_Internal_Rela rel;
6153 bfd_byte *loc;
6154
6155 /* This symbol has an entry in the global offset table. Set it
6156 up. */
6157
6158 sgot = htab->root.sgot;
6159 srelgot = htab->root.srelgot;
6160 BFD_ASSERT (sgot != NULL && srelgot != NULL);
6161
6162 rel.r_offset = (sgot->output_section->vma
6163 + sgot->output_offset
6164 + (h->got.offset &~ (bfd_vma) 1));
6165
6166 /* If this is a static link, or it is a -Bsymbolic link and the
6167 symbol is defined locally or was forced to be local because
6168 of a version file, we just want to emit a RELATIVE reloc.
6169 The entry in the global offset table will already have been
6170 initialized in the relocate_section function. */
6171 if (bfd_link_pic (info)
6172 && SYMBOL_REFERENCES_LOCAL (info, h))
6173 {
6174 if (htab->fdpic_p)
6175 {
6176 asection *sec = h->root.u.def.section;
6177 int dynindx
6178 = elf_section_data (sec->output_section)->dynindx;
6179
6180 rel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
6181 rel.r_addend = (h->root.u.def.value
6182 + h->root.u.def.section->output_offset);
6183 }
6184 else
6185 {
6186 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
6187 rel.r_addend = (h->root.u.def.value
6188 + h->root.u.def.section->output_section->vma
6189 + h->root.u.def.section->output_offset);
6190 }
6191 }
6192 else
6193 {
6194 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
6195 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
6196 rel.r_addend = 0;
6197 }
6198
6199 loc = srelgot->contents;
6200 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
6201 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6202 }
6203
6204 if (h->needs_copy)
6205 {
6206 asection *s;
6207 Elf_Internal_Rela rel;
6208 bfd_byte *loc;
6209
6210 /* This symbol needs a copy reloc. Set it up. */
6211
6212 BFD_ASSERT (h->dynindx != -1
6213 && (h->root.type == bfd_link_hash_defined
6214 || h->root.type == bfd_link_hash_defweak));
6215
6216 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
6217 BFD_ASSERT (s != NULL);
6218
6219 rel.r_offset = (h->root.u.def.value
6220 + h->root.u.def.section->output_section->vma
6221 + h->root.u.def.section->output_offset);
6222 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
6223 rel.r_addend = 0;
6224 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6225 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6226 }
6227
6228 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
6229 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
6230 ".got" section. */
6231 if (h == htab->root.hdynamic
6232 || (htab->root.target_os != is_vxworks && h == htab->root.hgot))
6233 sym->st_shndx = SHN_ABS;
6234
6235 return TRUE;
6236 }
6237
6238 /* Finish up the dynamic sections. */
6239
6240 static bfd_boolean
6241 sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
6242 {
6243 struct elf_sh_link_hash_table *htab;
6244 asection *sgotplt;
6245 asection *sdyn;
6246
6247 htab = sh_elf_hash_table (info);
6248 if (htab == NULL)
6249 return FALSE;
6250
6251 sgotplt = htab->root.sgotplt;
6252 sdyn = bfd_get_linker_section (htab->root.dynobj, ".dynamic");
6253
6254 if (htab->root.dynamic_sections_created)
6255 {
6256 asection *splt;
6257 Elf32_External_Dyn *dyncon, *dynconend;
6258
6259 BFD_ASSERT (sgotplt != NULL && sdyn != NULL);
6260
6261 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6262 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6263 for (; dyncon < dynconend; dyncon++)
6264 {
6265 Elf_Internal_Dyn dyn;
6266 asection *s;
6267
6268 bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
6269
6270 switch (dyn.d_tag)
6271 {
6272 default:
6273 if (htab->root.target_os == is_vxworks
6274 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
6275 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6276 break;
6277
6278 case DT_PLTGOT:
6279 BFD_ASSERT (htab->root.hgot != NULL);
6280 s = htab->root.hgot->root.u.def.section;
6281 dyn.d_un.d_ptr = htab->root.hgot->root.u.def.value
6282 + s->output_section->vma + s->output_offset;
6283 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6284 break;
6285
6286 case DT_JMPREL:
6287 s = htab->root.srelplt->output_section;
6288 BFD_ASSERT (s != NULL);
6289 dyn.d_un.d_ptr = s->vma;
6290 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6291 break;
6292
6293 case DT_PLTRELSZ:
6294 s = htab->root.srelplt->output_section;
6295 BFD_ASSERT (s != NULL);
6296 dyn.d_un.d_val = s->size;
6297 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6298 break;
6299 }
6300 }
6301
6302 /* Fill in the first entry in the procedure linkage table. */
6303 splt = htab->root.splt;
6304 if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
6305 {
6306 unsigned int i;
6307
6308 memcpy (splt->contents,
6309 htab->plt_info->plt0_entry,
6310 htab->plt_info->plt0_entry_size);
6311 for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
6312 if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
6313 install_plt_field (output_bfd, FALSE,
6314 (sgotplt->output_section->vma
6315 + sgotplt->output_offset
6316 + (i * 4)),
6317 (splt->contents
6318 + htab->plt_info->plt0_got_fields[i]));
6319
6320 if (htab->root.target_os == is_vxworks)
6321 {
6322 /* Finalize the .rela.plt.unloaded contents. */
6323 Elf_Internal_Rela rel;
6324 bfd_byte *loc;
6325
6326 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
6327 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
6328 loc = htab->srelplt2->contents;
6329 rel.r_offset = (splt->output_section->vma
6330 + splt->output_offset
6331 + htab->plt_info->plt0_got_fields[2]);
6332 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6333 rel.r_addend = 8;
6334 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6335 loc += sizeof (Elf32_External_Rela);
6336
6337 /* Fix up the remaining .rela.plt.unloaded relocations.
6338 They may have the wrong symbol index for _G_O_T_ or
6339 _P_L_T_ depending on the order in which symbols were
6340 output. */
6341 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
6342 {
6343 /* The PLT entry's pointer to the .got.plt slot. */
6344 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6345 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
6346 R_SH_DIR32);
6347 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6348 loc += sizeof (Elf32_External_Rela);
6349
6350 /* The .got.plt slot's pointer to .plt. */
6351 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6352 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
6353 R_SH_DIR32);
6354 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6355 loc += sizeof (Elf32_External_Rela);
6356 }
6357 }
6358
6359 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6360 really seem like the right value. */
6361 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
6362 }
6363 }
6364
6365 /* Fill in the first three entries in the global offset table. */
6366 if (sgotplt && sgotplt->size > 0 && !htab->fdpic_p)
6367 {
6368 if (sdyn == NULL)
6369 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents);
6370 else
6371 bfd_put_32 (output_bfd,
6372 sdyn->output_section->vma + sdyn->output_offset,
6373 sgotplt->contents);
6374 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4);
6375 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8);
6376 }
6377
6378 if (sgotplt && sgotplt->size > 0)
6379 elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4;
6380
6381 /* At the very end of the .rofixup section is a pointer to the GOT. */
6382 if (htab->fdpic_p && htab->srofixup != NULL)
6383 {
6384 struct elf_link_hash_entry *hgot = htab->root.hgot;
6385 bfd_vma got_value = hgot->root.u.def.value
6386 + hgot->root.u.def.section->output_section->vma
6387 + hgot->root.u.def.section->output_offset;
6388
6389 sh_elf_add_rofixup (output_bfd, htab->srofixup, got_value);
6390
6391 /* Make sure we allocated and generated the same number of fixups. */
6392 BFD_ASSERT (htab->srofixup->reloc_count * 4 == htab->srofixup->size);
6393 }
6394
6395 if (htab->srelfuncdesc)
6396 BFD_ASSERT (htab->srelfuncdesc->reloc_count * sizeof (Elf32_External_Rela)
6397 == htab->srelfuncdesc->size);
6398
6399 if (htab->root.srelgot)
6400 BFD_ASSERT (htab->root.srelgot->reloc_count * sizeof (Elf32_External_Rela)
6401 == htab->root.srelgot->size);
6402
6403 return TRUE;
6404 }
6405
6406 static enum elf_reloc_type_class
6407 sh_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
6408 const asection *rel_sec ATTRIBUTE_UNUSED,
6409 const Elf_Internal_Rela *rela)
6410 {
6411 switch ((int) ELF32_R_TYPE (rela->r_info))
6412 {
6413 case R_SH_RELATIVE:
6414 return reloc_class_relative;
6415 case R_SH_JMP_SLOT:
6416 return reloc_class_plt;
6417 case R_SH_COPY:
6418 return reloc_class_copy;
6419 default:
6420 return reloc_class_normal;
6421 }
6422 }
6423
6424 #if !defined SH_TARGET_ALREADY_DEFINED
6425 /* Support for Linux core dump NOTE sections. */
6426
6427 static bfd_boolean
6428 elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
6429 {
6430 int offset;
6431 unsigned int size;
6432
6433 switch (note->descsz)
6434 {
6435 default:
6436 return FALSE;
6437
6438 case 168: /* Linux/SH */
6439 /* pr_cursig */
6440 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
6441
6442 /* pr_pid */
6443 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
6444
6445 /* pr_reg */
6446 offset = 72;
6447 size = 92;
6448
6449 break;
6450 }
6451
6452 /* Make a ".reg/999" section. */
6453 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
6454 size, note->descpos + offset);
6455 }
6456
6457 static bfd_boolean
6458 elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
6459 {
6460 switch (note->descsz)
6461 {
6462 default:
6463 return FALSE;
6464
6465 case 124: /* Linux/SH elf_prpsinfo */
6466 elf_tdata (abfd)->core->program
6467 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
6468 elf_tdata (abfd)->core->command
6469 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
6470 }
6471
6472 /* Note that for some reason, a spurious space is tacked
6473 onto the end of the args in some (at least one anyway)
6474 implementations, so strip it off if it exists. */
6475
6476 {
6477 char *command = elf_tdata (abfd)->core->command;
6478 int n = strlen (command);
6479
6480 if (0 < n && command[n - 1] == ' ')
6481 command[n - 1] = '\0';
6482 }
6483
6484 return TRUE;
6485 }
6486 #endif /* not SH_TARGET_ALREADY_DEFINED */
6487
6488
6489 /* Return address for Ith PLT stub in section PLT, for relocation REL
6490 or (bfd_vma) -1 if it should not be included. */
6491
6492 static bfd_vma
6493 sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6494 const arelent *rel ATTRIBUTE_UNUSED)
6495 {
6496 const struct elf_sh_plt_info *plt_info;
6497
6498 plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6499 return plt->vma + get_plt_offset (plt_info, i);
6500 }
6501
6502 /* Decide whether to attempt to turn absptr or lsda encodings in
6503 shared libraries into pcrel within the given input section. */
6504
6505 static bfd_boolean
6506 sh_elf_use_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED,
6507 struct bfd_link_info *info,
6508 asection *eh_frame_section ATTRIBUTE_UNUSED)
6509 {
6510 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6511
6512 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
6513 if (htab->fdpic_p)
6514 return FALSE;
6515
6516 return TRUE;
6517 }
6518
6519 /* Adjust the contents of an eh_frame_hdr section before they're output. */
6520
6521 static bfd_byte
6522 sh_elf_encode_eh_address (bfd *abfd,
6523 struct bfd_link_info *info,
6524 asection *osec, bfd_vma offset,
6525 asection *loc_sec, bfd_vma loc_offset,
6526 bfd_vma *encoded)
6527 {
6528 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6529 struct elf_link_hash_entry *h;
6530
6531 if (!htab->fdpic_p)
6532 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, loc_sec,
6533 loc_offset, encoded);
6534
6535 h = htab->root.hgot;
6536 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
6537
6538 if (! h || (sh_elf_osec_to_segment (abfd, osec)
6539 == sh_elf_osec_to_segment (abfd, loc_sec->output_section)))
6540 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
6541 loc_sec, loc_offset, encoded);
6542
6543 BFD_ASSERT (sh_elf_osec_to_segment (abfd, osec)
6544 == (sh_elf_osec_to_segment
6545 (abfd, h->root.u.def.section->output_section)));
6546
6547 *encoded = osec->vma + offset
6548 - (h->root.u.def.value
6549 + h->root.u.def.section->output_section->vma
6550 + h->root.u.def.section->output_offset);
6551
6552 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
6553 }
6554
6555 #if !defined SH_TARGET_ALREADY_DEFINED
6556 #define TARGET_BIG_SYM sh_elf32_vec
6557 #define TARGET_BIG_NAME "elf32-sh"
6558 #define TARGET_LITTLE_SYM sh_elf32_le_vec
6559 #define TARGET_LITTLE_NAME "elf32-shl"
6560 #endif
6561
6562 #define ELF_ARCH bfd_arch_sh
6563 #define ELF_TARGET_ID SH_ELF_DATA
6564 #define ELF_MACHINE_CODE EM_SH
6565 #ifdef __QNXTARGET__
6566 #define ELF_MAXPAGESIZE 0x1000
6567 #else
6568 #define ELF_MAXPAGESIZE 0x80
6569 #endif
6570
6571 #define elf_symbol_leading_char '_'
6572
6573 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6574 #define bfd_elf32_bfd_reloc_name_lookup \
6575 sh_elf_reloc_name_lookup
6576 #define elf_info_to_howto sh_elf_info_to_howto
6577 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6578 #define elf_backend_relocate_section sh_elf_relocate_section
6579 #define bfd_elf32_bfd_get_relocated_section_contents \
6580 sh_elf_get_relocated_section_contents
6581 #define bfd_elf32_mkobject sh_elf_mkobject
6582 #define elf_backend_object_p sh_elf_object_p
6583 #define bfd_elf32_bfd_copy_private_bfd_data \
6584 sh_elf_copy_private_data
6585 #define bfd_elf32_bfd_merge_private_bfd_data \
6586 sh_elf_merge_private_data
6587
6588 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6589 #define elf_backend_check_relocs sh_elf_check_relocs
6590 #define elf_backend_copy_indirect_symbol \
6591 sh_elf_copy_indirect_symbol
6592 #define elf_backend_create_dynamic_sections \
6593 sh_elf_create_dynamic_sections
6594 #define bfd_elf32_bfd_link_hash_table_create \
6595 sh_elf_link_hash_table_create
6596 #define elf_backend_adjust_dynamic_symbol \
6597 sh_elf_adjust_dynamic_symbol
6598 #define elf_backend_always_size_sections \
6599 sh_elf_always_size_sections
6600 #define elf_backend_size_dynamic_sections \
6601 sh_elf_size_dynamic_sections
6602 #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
6603 #define elf_backend_finish_dynamic_symbol \
6604 sh_elf_finish_dynamic_symbol
6605 #define elf_backend_finish_dynamic_sections \
6606 sh_elf_finish_dynamic_sections
6607 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6608 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6609 #define elf_backend_can_make_relative_eh_frame \
6610 sh_elf_use_relative_eh_frame
6611 #define elf_backend_can_make_lsda_relative_eh_frame \
6612 sh_elf_use_relative_eh_frame
6613 #define elf_backend_encode_eh_address \
6614 sh_elf_encode_eh_address
6615
6616 #define elf_backend_stack_align 8
6617 #define elf_backend_can_gc_sections 1
6618 #define elf_backend_can_refcount 1
6619 #define elf_backend_want_got_plt 1
6620 #define elf_backend_plt_readonly 1
6621 #define elf_backend_want_plt_sym 0
6622 #define elf_backend_got_header_size 12
6623 #define elf_backend_dtrel_excludes_plt 1
6624
6625 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
6626
6627 #if !defined SH_TARGET_ALREADY_DEFINED
6628
6629 #include "elf32-target.h"
6630
6631 /* NetBSD support. */
6632 #undef TARGET_BIG_SYM
6633 #define TARGET_BIG_SYM sh_elf32_nbsd_vec
6634 #undef TARGET_BIG_NAME
6635 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6636 #undef TARGET_LITTLE_SYM
6637 #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
6638 #undef TARGET_LITTLE_NAME
6639 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6640 #undef ELF_MAXPAGESIZE
6641 #define ELF_MAXPAGESIZE 0x10000
6642 #undef ELF_COMMONPAGESIZE
6643 #undef elf_symbol_leading_char
6644 #define elf_symbol_leading_char 0
6645 #undef elf32_bed
6646 #define elf32_bed elf32_sh_nbsd_bed
6647
6648 #include "elf32-target.h"
6649
6650
6651 /* Linux support. */
6652 #undef TARGET_BIG_SYM
6653 #define TARGET_BIG_SYM sh_elf32_linux_be_vec
6654 #undef TARGET_BIG_NAME
6655 #define TARGET_BIG_NAME "elf32-shbig-linux"
6656 #undef TARGET_LITTLE_SYM
6657 #define TARGET_LITTLE_SYM sh_elf32_linux_vec
6658 #undef TARGET_LITTLE_NAME
6659 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6660 #undef ELF_COMMONPAGESIZE
6661 #define ELF_COMMONPAGESIZE 0x1000
6662
6663 #undef elf_backend_grok_prstatus
6664 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6665 #undef elf_backend_grok_psinfo
6666 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6667 #undef elf32_bed
6668 #define elf32_bed elf32_sh_lin_bed
6669
6670 #include "elf32-target.h"
6671
6672
6673 /* FDPIC support. */
6674 #undef TARGET_BIG_SYM
6675 #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
6676 #undef TARGET_BIG_NAME
6677 #define TARGET_BIG_NAME "elf32-shbig-fdpic"
6678 #undef TARGET_LITTLE_SYM
6679 #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
6680 #undef TARGET_LITTLE_NAME
6681 #define TARGET_LITTLE_NAME "elf32-sh-fdpic"
6682
6683 #undef elf32_bed
6684 #define elf32_bed elf32_sh_fd_bed
6685
6686 #include "elf32-target.h"
6687
6688 /* VxWorks support. */
6689 #undef TARGET_BIG_SYM
6690 #define TARGET_BIG_SYM sh_elf32_vxworks_vec
6691 #undef TARGET_BIG_NAME
6692 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6693 #undef TARGET_LITTLE_SYM
6694 #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
6695 #undef TARGET_LITTLE_NAME
6696 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6697 #undef elf32_bed
6698 #define elf32_bed elf32_sh_vxworks_bed
6699
6700 #undef elf_backend_want_plt_sym
6701 #define elf_backend_want_plt_sym 1
6702 #undef elf_symbol_leading_char
6703 #define elf_symbol_leading_char '_'
6704 #define elf_backend_want_got_underscore 1
6705 #undef elf_backend_grok_prstatus
6706 #undef elf_backend_grok_psinfo
6707 #undef elf_backend_add_symbol_hook
6708 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6709 #undef elf_backend_link_output_symbol_hook
6710 #define elf_backend_link_output_symbol_hook \
6711 elf_vxworks_link_output_symbol_hook
6712 #undef elf_backend_emit_relocs
6713 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6714 #undef elf_backend_final_write_processing
6715 #define elf_backend_final_write_processing \
6716 elf_vxworks_final_write_processing
6717 #undef ELF_MAXPAGESIZE
6718 #define ELF_MAXPAGESIZE 0x1000
6719 #undef ELF_COMMONPAGESIZE
6720
6721 #undef ELF_TARGET_OS
6722 #define ELF_TARGET_OS is_vxworks
6723
6724 #include "elf32-target.h"
6725
6726 #endif /* not SH_TARGET_ALREADY_DEFINED */
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