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[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 if (contents != NULL)
171 free (contents);
172 return bfd_reloc_outofrange;
173 }
174 }
175 }
176 #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800)
177 start_ptr = contents + start;
178 for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;)
179 {
180 for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);)
181 ptr -= 2;
182 ptr += 2;
183 diff = (last_ptr - ptr) >> 1;
184 cum_diff += diff & 1;
185 cum_diff += diff;
186 }
187 /* Calculate the start / end values to load into rs / re minus four -
188 so that will cancel out the four we would otherwise have to add to
189 addr to get the value to subtract in order to get relative addressing. */
190 if (cum_diff >= 0)
191 {
192 start -= 4;
193 end = (ptr + cum_diff * 2) - contents;
194 }
195 else
196 {
197 bfd_vma start0 = start - 4;
198
199 while (start0 && IS_PPI (contents + start0))
200 start0 -= 2;
201 start0 = start - 2 - ((start - start0) & 2);
202 start = start0 - cum_diff - 2;
203 end = start0;
204 }
205
206 if (contents != NULL
207 && elf_section_data (symbol_section)->this_hdr.contents != contents)
208 free (contents);
209
210 insn = bfd_get_16 (input_bfd, contents + addr);
211
212 x = (insn & 0x200 ? end : start) - addr;
213 if (input_section != symbol_section)
214 x += ((symbol_section->output_section->vma + symbol_section->output_offset)
215 - (input_section->output_section->vma
216 + input_section->output_offset));
217 x >>= 1;
218 if (x < -128 || x > 127)
219 return bfd_reloc_overflow;
220
221 x = (insn & ~0xff) | (x & 0xff);
222 bfd_put_16 (input_bfd, (bfd_vma) x, contents + addr);
223
224 return bfd_reloc_ok;
225 }
226
227 /* This function is used for normal relocs. This used to be like the COFF
228 function, and is almost certainly incorrect for other ELF targets. */
229
230 static bfd_reloc_status_type
231 sh_elf_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in,
232 void *data, asection *input_section, bfd *output_bfd,
233 char **error_message ATTRIBUTE_UNUSED)
234 {
235 bfd_vma insn;
236 bfd_vma sym_value;
237 enum elf_sh_reloc_type r_type;
238 bfd_vma addr = reloc_entry->address;
239 bfd_size_type octets = addr * OCTETS_PER_BYTE (abfd, input_section);
240 bfd_byte *hit_data = (bfd_byte *) data + octets;
241
242 r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type;
243
244 if (output_bfd != NULL)
245 {
246 /* Partial linking--do nothing. */
247 reloc_entry->address += input_section->output_offset;
248 return bfd_reloc_ok;
249 }
250
251 /* Almost all relocs have to do with relaxing. If any work must be
252 done for them, it has been done in sh_relax_section. */
253 if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0)
254 return bfd_reloc_ok;
255
256 if (symbol_in != NULL
257 && bfd_is_und_section (symbol_in->section))
258 return bfd_reloc_undefined;
259
260 /* PR 17512: file: 9891ca98. */
261 if (octets + bfd_get_reloc_size (reloc_entry->howto)
262 > bfd_get_section_limit_octets (abfd, input_section))
263 return bfd_reloc_outofrange;
264
265 if (bfd_is_com_section (symbol_in->section))
266 sym_value = 0;
267 else
268 sym_value = (symbol_in->value +
269 symbol_in->section->output_section->vma +
270 symbol_in->section->output_offset);
271
272 switch (r_type)
273 {
274 case R_SH_DIR32:
275 insn = bfd_get_32 (abfd, hit_data);
276 insn += sym_value + reloc_entry->addend;
277 bfd_put_32 (abfd, insn, hit_data);
278 break;
279 case R_SH_IND12W:
280 insn = bfd_get_16 (abfd, hit_data);
281 sym_value += reloc_entry->addend;
282 sym_value -= (input_section->output_section->vma
283 + input_section->output_offset
284 + addr
285 + 4);
286 sym_value += (((insn & 0xfff) ^ 0x800) - 0x800) << 1;
287 insn = (insn & 0xf000) | ((sym_value >> 1) & 0xfff);
288 bfd_put_16 (abfd, insn, hit_data);
289 if (sym_value + 0x1000 >= 0x2000 || (sym_value & 1) != 0)
290 return bfd_reloc_overflow;
291 break;
292 default:
293 abort ();
294 break;
295 }
296
297 return bfd_reloc_ok;
298 }
299
300 /* This function is used for relocs which are only used for relaxing,
301 which the linker should otherwise ignore. */
302
303 static bfd_reloc_status_type
304 sh_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
305 asymbol *symbol ATTRIBUTE_UNUSED,
306 void *data ATTRIBUTE_UNUSED, asection *input_section,
307 bfd *output_bfd,
308 char **error_message ATTRIBUTE_UNUSED)
309 {
310 if (output_bfd != NULL)
311 reloc_entry->address += input_section->output_offset;
312 return bfd_reloc_ok;
313 }
314
315 /* This structure is used to map BFD reloc codes to SH ELF relocs. */
316
317 struct elf_reloc_map
318 {
319 bfd_reloc_code_real_type bfd_reloc_val;
320 unsigned char elf_reloc_val;
321 };
322
323 /* An array mapping BFD reloc codes to SH ELF relocs. */
324
325 static const struct elf_reloc_map sh_reloc_map[] =
326 {
327 { BFD_RELOC_NONE, R_SH_NONE },
328 { BFD_RELOC_32, R_SH_DIR32 },
329 { BFD_RELOC_16, R_SH_DIR16 },
330 { BFD_RELOC_8, R_SH_DIR8 },
331 { BFD_RELOC_CTOR, R_SH_DIR32 },
332 { BFD_RELOC_32_PCREL, R_SH_REL32 },
333 { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN },
334 { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W },
335 { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ },
336 { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL },
337 { BFD_RELOC_8_PCREL, R_SH_SWITCH8 },
338 { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 },
339 { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 },
340 { BFD_RELOC_SH_USES, R_SH_USES },
341 { BFD_RELOC_SH_COUNT, R_SH_COUNT },
342 { BFD_RELOC_SH_ALIGN, R_SH_ALIGN },
343 { BFD_RELOC_SH_CODE, R_SH_CODE },
344 { BFD_RELOC_SH_DATA, R_SH_DATA },
345 { BFD_RELOC_SH_LABEL, R_SH_LABEL },
346 { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT },
347 { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY },
348 { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START },
349 { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END },
350 { BFD_RELOC_SH_TLS_GD_32, R_SH_TLS_GD_32 },
351 { BFD_RELOC_SH_TLS_LD_32, R_SH_TLS_LD_32 },
352 { BFD_RELOC_SH_TLS_LDO_32, R_SH_TLS_LDO_32 },
353 { BFD_RELOC_SH_TLS_IE_32, R_SH_TLS_IE_32 },
354 { BFD_RELOC_SH_TLS_LE_32, R_SH_TLS_LE_32 },
355 { BFD_RELOC_SH_TLS_DTPMOD32, R_SH_TLS_DTPMOD32 },
356 { BFD_RELOC_SH_TLS_DTPOFF32, R_SH_TLS_DTPOFF32 },
357 { BFD_RELOC_SH_TLS_TPOFF32, R_SH_TLS_TPOFF32 },
358 { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 },
359 { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 },
360 { BFD_RELOC_SH_COPY, R_SH_COPY },
361 { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT },
362 { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT },
363 { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE },
364 { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF },
365 { BFD_RELOC_SH_GOTPC, R_SH_GOTPC },
366 { BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 },
367 { BFD_RELOC_SH_GOT20, R_SH_GOT20 },
368 { BFD_RELOC_SH_GOTOFF20, R_SH_GOTOFF20 },
369 { BFD_RELOC_SH_GOTFUNCDESC, R_SH_GOTFUNCDESC },
370 { BFD_RELOC_SH_GOTFUNCDESC20, R_SH_GOTFUNCDESC20 },
371 { BFD_RELOC_SH_GOTOFFFUNCDESC, R_SH_GOTOFFFUNCDESC },
372 { BFD_RELOC_SH_GOTOFFFUNCDESC20, R_SH_GOTOFFFUNCDESC20 },
373 { BFD_RELOC_SH_FUNCDESC, R_SH_FUNCDESC },
374 };
375
376 /* Given a BFD reloc code, return the howto structure for the
377 corresponding SH ELF reloc. */
378
379 static reloc_howto_type *
380 sh_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
381 {
382 unsigned int i;
383
384 for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++)
385 {
386 if (sh_reloc_map[i].bfd_reloc_val == code)
387 return get_howto_table (abfd) + (int) sh_reloc_map[i].elf_reloc_val;
388 }
389
390 return NULL;
391 }
392
393 static reloc_howto_type *
394 sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name)
395 {
396 unsigned int i;
397
398 if (vxworks_object_p (abfd))
399 {
400 for (i = 0;
401 i < (sizeof (sh_vxworks_howto_table)
402 / sizeof (sh_vxworks_howto_table[0]));
403 i++)
404 if (sh_vxworks_howto_table[i].name != NULL
405 && strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0)
406 return &sh_vxworks_howto_table[i];
407 }
408 else
409 {
410 for (i = 0;
411 i < (sizeof (sh_elf_howto_table)
412 / sizeof (sh_elf_howto_table[0]));
413 i++)
414 if (sh_elf_howto_table[i].name != NULL
415 && strcasecmp (sh_elf_howto_table[i].name, r_name) == 0)
416 return &sh_elf_howto_table[i];
417 }
418
419 return NULL;
420 }
421
422 /* Given an ELF reloc, fill in the howto field of a relent. */
423
424 static bfd_boolean
425 sh_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
426 {
427 unsigned int r;
428
429 r = ELF32_R_TYPE (dst->r_info);
430
431 if (r >= R_SH_max
432 || (r >= R_SH_FIRST_INVALID_RELOC && r <= R_SH_LAST_INVALID_RELOC)
433 || (r >= R_SH_FIRST_INVALID_RELOC_2 && r <= R_SH_LAST_INVALID_RELOC_2)
434 || (r >= R_SH_FIRST_INVALID_RELOC_3 && r <= R_SH_LAST_INVALID_RELOC_3)
435 || (r >= R_SH_FIRST_INVALID_RELOC_4 && r <= R_SH_LAST_INVALID_RELOC_4)
436 || (r >= R_SH_FIRST_INVALID_RELOC_5 && r <= R_SH_LAST_INVALID_RELOC_5)
437 || (r >= R_SH_FIRST_INVALID_RELOC_6 && r <= R_SH_LAST_INVALID_RELOC_6))
438 {
439 /* xgettext:c-format */
440 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
441 abfd, r);
442 bfd_set_error (bfd_error_bad_value);
443 return FALSE;
444 }
445
446 cache_ptr->howto = get_howto_table (abfd) + r;
447 return TRUE;
448 }
449 \f
450 /* This function handles relaxing for SH ELF. See the corresponding
451 function in coff-sh.c for a description of what this does. FIXME:
452 There is a lot of duplication here between this code and the COFF
453 specific code. The format of relocs and symbols is wound deeply
454 into this code, but it would still be better if the duplication
455 could be eliminated somehow. Note in particular that although both
456 functions use symbols like R_SH_CODE, those symbols have different
457 values; in coff-sh.c they come from include/coff/sh.h, whereas here
458 they come from enum elf_sh_reloc_type in include/elf/sh.h. */
459
460 static bfd_boolean
461 sh_elf_relax_section (bfd *abfd, asection *sec,
462 struct bfd_link_info *link_info, bfd_boolean *again)
463 {
464 Elf_Internal_Shdr *symtab_hdr;
465 Elf_Internal_Rela *internal_relocs;
466 bfd_boolean have_code;
467 Elf_Internal_Rela *irel, *irelend;
468 bfd_byte *contents = NULL;
469 Elf_Internal_Sym *isymbuf = NULL;
470
471 *again = FALSE;
472
473 if (bfd_link_relocatable (link_info)
474 || (sec->flags & SEC_RELOC) == 0
475 || sec->reloc_count == 0)
476 return TRUE;
477
478 symtab_hdr = &elf_symtab_hdr (abfd);
479
480 internal_relocs = (_bfd_elf_link_read_relocs
481 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
482 link_info->keep_memory));
483 if (internal_relocs == NULL)
484 goto error_return;
485
486 have_code = FALSE;
487
488 irelend = internal_relocs + sec->reloc_count;
489 for (irel = internal_relocs; irel < irelend; irel++)
490 {
491 bfd_vma laddr, paddr, symval;
492 unsigned short insn;
493 Elf_Internal_Rela *irelfn, *irelscan, *irelcount;
494 bfd_signed_vma foff;
495
496 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE)
497 have_code = TRUE;
498
499 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES)
500 continue;
501
502 /* Get the section contents. */
503 if (contents == NULL)
504 {
505 if (elf_section_data (sec)->this_hdr.contents != NULL)
506 contents = elf_section_data (sec)->this_hdr.contents;
507 else
508 {
509 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
510 goto error_return;
511 }
512 }
513
514 /* The r_addend field of the R_SH_USES reloc will point us to
515 the register load. The 4 is because the r_addend field is
516 computed as though it were a jump offset, which are based
517 from 4 bytes after the jump instruction. */
518 laddr = irel->r_offset + 4 + irel->r_addend;
519 if (laddr >= sec->size)
520 {
521 /* xgettext:c-format */
522 _bfd_error_handler
523 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES offset"),
524 abfd, (uint64_t) irel->r_offset);
525 continue;
526 }
527 insn = bfd_get_16 (abfd, contents + laddr);
528
529 /* If the instruction is not mov.l NN,rN, we don't know what to
530 do. */
531 if ((insn & 0xf000) != 0xd000)
532 {
533 _bfd_error_handler
534 /* xgettext:c-format */
535 (_("%pB: %#" PRIx64 ": warning: "
536 "R_SH_USES points to unrecognized insn 0x%x"),
537 abfd, (uint64_t) irel->r_offset, insn);
538 continue;
539 }
540
541 /* Get the address from which the register is being loaded. The
542 displacement in the mov.l instruction is quadrupled. It is a
543 displacement from four bytes after the movl instruction, but,
544 before adding in the PC address, two least significant bits
545 of the PC are cleared. We assume that the section is aligned
546 on a four byte boundary. */
547 paddr = insn & 0xff;
548 paddr *= 4;
549 paddr += (laddr + 4) &~ (bfd_vma) 3;
550 if (paddr >= sec->size)
551 {
552 _bfd_error_handler
553 /* xgettext:c-format */
554 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES load offset"),
555 abfd, (uint64_t) irel->r_offset);
556 continue;
557 }
558
559 /* Get the reloc for the address from which the register is
560 being loaded. This reloc will tell us which function is
561 actually being called. */
562 for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
563 if (irelfn->r_offset == paddr
564 && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32)
565 break;
566 if (irelfn >= irelend)
567 {
568 _bfd_error_handler
569 /* xgettext:c-format */
570 (_("%pB: %#" PRIx64 ": warning: could not find expected reloc"),
571 abfd, (uint64_t) paddr);
572 continue;
573 }
574
575 /* Read this BFD's symbols if we haven't done so already. */
576 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
577 {
578 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
579 if (isymbuf == NULL)
580 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
581 symtab_hdr->sh_info, 0,
582 NULL, NULL, NULL);
583 if (isymbuf == NULL)
584 goto error_return;
585 }
586
587 /* Get the value of the symbol referred to by the reloc. */
588 if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
589 {
590 /* A local symbol. */
591 Elf_Internal_Sym *isym;
592
593 isym = isymbuf + ELF32_R_SYM (irelfn->r_info);
594 if (isym->st_shndx
595 != (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec))
596 {
597 _bfd_error_handler
598 /* xgettext:c-format */
599 (_("%pB: %#" PRIx64 ": warning: symbol in unexpected section"),
600 abfd, (uint64_t) paddr);
601 continue;
602 }
603
604 symval = (isym->st_value
605 + sec->output_section->vma
606 + sec->output_offset);
607 }
608 else
609 {
610 unsigned long indx;
611 struct elf_link_hash_entry *h;
612
613 indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info;
614 h = elf_sym_hashes (abfd)[indx];
615 BFD_ASSERT (h != NULL);
616 if (h->root.type != bfd_link_hash_defined
617 && h->root.type != bfd_link_hash_defweak)
618 {
619 /* This appears to be a reference to an undefined
620 symbol. Just ignore it--it will be caught by the
621 regular reloc processing. */
622 continue;
623 }
624
625 symval = (h->root.u.def.value
626 + h->root.u.def.section->output_section->vma
627 + h->root.u.def.section->output_offset);
628 }
629
630 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
631 symval += bfd_get_32 (abfd, contents + paddr);
632 else
633 symval += irelfn->r_addend;
634
635 /* See if this function call can be shortened. */
636 foff = (symval
637 - (irel->r_offset
638 + sec->output_section->vma
639 + sec->output_offset
640 + 4));
641 /* A branch to an address beyond ours might be increased by an
642 .align that doesn't move when bytes behind us are deleted.
643 So, we add some slop in this calculation to allow for
644 that. */
645 if (foff < -0x1000 || foff >= 0x1000 - 8)
646 {
647 /* After all that work, we can't shorten this function call. */
648 continue;
649 }
650
651 /* Shorten the function call. */
652
653 /* For simplicity of coding, we are going to modify the section
654 contents, the section relocs, and the BFD symbol table. We
655 must tell the rest of the code not to free up this
656 information. It would be possible to instead create a table
657 of changes which have to be made, as is done in coff-mips.c;
658 that would be more work, but would require less memory when
659 the linker is run. */
660
661 elf_section_data (sec)->relocs = internal_relocs;
662 elf_section_data (sec)->this_hdr.contents = contents;
663 symtab_hdr->contents = (unsigned char *) isymbuf;
664
665 /* Replace the jmp/jsr with a bra/bsr. */
666
667 /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
668 replace the jmp/jsr with a bra/bsr. */
669 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W);
670 /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
671 here, but that only checks if the symbol is an external symbol,
672 not if the symbol is in a different section. Besides, we need
673 a consistent meaning for the relocation, so we just assume here that
674 the value of the symbol is not available. */
675
676 /* We can't fully resolve this yet, because the external
677 symbol value may be changed by future relaxing. We let
678 the final link phase handle it. */
679 if (bfd_get_16 (abfd, contents + irel->r_offset) & 0x0020)
680 bfd_put_16 (abfd, (bfd_vma) 0xa000, contents + irel->r_offset);
681 else
682 bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
683
684 irel->r_addend = -4;
685
686 /* When we calculated the symbol "value" we had an offset in the
687 DIR32's word in memory (we read and add it above). However,
688 the jsr we create does NOT have this offset encoded, so we
689 have to add it to the addend to preserve it. */
690 irel->r_addend += bfd_get_32 (abfd, contents + paddr);
691
692 /* See if there is another R_SH_USES reloc referring to the same
693 register load. */
694 for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
695 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES
696 && laddr == irelscan->r_offset + 4 + irelscan->r_addend)
697 break;
698 if (irelscan < irelend)
699 {
700 /* Some other function call depends upon this register load,
701 and we have not yet converted that function call.
702 Indeed, we may never be able to convert it. There is
703 nothing else we can do at this point. */
704 continue;
705 }
706
707 /* Look for a R_SH_COUNT reloc on the location where the
708 function address is stored. Do this before deleting any
709 bytes, to avoid confusion about the address. */
710 for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
711 if (irelcount->r_offset == paddr
712 && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT)
713 break;
714
715 /* Delete the register load. */
716 if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2))
717 goto error_return;
718
719 /* That will change things, so, just in case it permits some
720 other function call to come within range, we should relax
721 again. Note that this is not required, and it may be slow. */
722 *again = TRUE;
723
724 /* Now check whether we got a COUNT reloc. */
725 if (irelcount >= irelend)
726 {
727 _bfd_error_handler
728 /* xgettext:c-format */
729 (_("%pB: %#" PRIx64 ": warning: "
730 "could not find expected COUNT reloc"),
731 abfd, (uint64_t) paddr);
732 continue;
733 }
734
735 /* The number of uses is stored in the r_addend field. We've
736 just deleted one. */
737 if (irelcount->r_addend == 0)
738 {
739 /* xgettext:c-format */
740 _bfd_error_handler (_("%pB: %#" PRIx64 ": warning: bad count"),
741 abfd, (uint64_t) paddr);
742 continue;
743 }
744
745 --irelcount->r_addend;
746
747 /* If there are no more uses, we can delete the address. Reload
748 the address from irelfn, in case it was changed by the
749 previous call to sh_elf_relax_delete_bytes. */
750 if (irelcount->r_addend == 0)
751 {
752 if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4))
753 goto error_return;
754 }
755
756 /* We've done all we can with that function call. */
757 }
758
759 /* Look for load and store instructions that we can align on four
760 byte boundaries. */
761 if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4
762 && have_code)
763 {
764 bfd_boolean swapped;
765
766 /* Get the section contents. */
767 if (contents == NULL)
768 {
769 if (elf_section_data (sec)->this_hdr.contents != NULL)
770 contents = elf_section_data (sec)->this_hdr.contents;
771 else
772 {
773 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
774 goto error_return;
775 }
776 }
777
778 if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents,
779 &swapped))
780 goto error_return;
781
782 if (swapped)
783 {
784 elf_section_data (sec)->relocs = internal_relocs;
785 elf_section_data (sec)->this_hdr.contents = contents;
786 symtab_hdr->contents = (unsigned char *) isymbuf;
787 }
788 }
789
790 if (isymbuf != NULL
791 && symtab_hdr->contents != (unsigned char *) isymbuf)
792 {
793 if (! link_info->keep_memory)
794 free (isymbuf);
795 else
796 {
797 /* Cache the symbols for elf_link_input_bfd. */
798 symtab_hdr->contents = (unsigned char *) isymbuf;
799 }
800 }
801
802 if (contents != NULL
803 && elf_section_data (sec)->this_hdr.contents != contents)
804 {
805 if (! link_info->keep_memory)
806 free (contents);
807 else
808 {
809 /* Cache the section contents for elf_link_input_bfd. */
810 elf_section_data (sec)->this_hdr.contents = contents;
811 }
812 }
813
814 if (internal_relocs != NULL
815 && elf_section_data (sec)->relocs != internal_relocs)
816 free (internal_relocs);
817
818 return TRUE;
819
820 error_return:
821 if (isymbuf != NULL
822 && symtab_hdr->contents != (unsigned char *) isymbuf)
823 free (isymbuf);
824 if (contents != NULL
825 && elf_section_data (sec)->this_hdr.contents != contents)
826 free (contents);
827 if (internal_relocs != NULL
828 && elf_section_data (sec)->relocs != internal_relocs)
829 free (internal_relocs);
830
831 return FALSE;
832 }
833
834 /* Delete some bytes from a section while relaxing. FIXME: There is a
835 lot of duplication between this function and sh_relax_delete_bytes
836 in coff-sh.c. */
837
838 static bfd_boolean
839 sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr,
840 int count)
841 {
842 Elf_Internal_Shdr *symtab_hdr;
843 unsigned int sec_shndx;
844 bfd_byte *contents;
845 Elf_Internal_Rela *irel, *irelend;
846 Elf_Internal_Rela *irelalign;
847 bfd_vma toaddr;
848 Elf_Internal_Sym *isymbuf, *isym, *isymend;
849 struct elf_link_hash_entry **sym_hashes;
850 struct elf_link_hash_entry **end_hashes;
851 unsigned int symcount;
852 asection *o;
853
854 symtab_hdr = &elf_symtab_hdr (abfd);
855 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
856
857 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
858
859 contents = elf_section_data (sec)->this_hdr.contents;
860
861 /* The deletion must stop at the next ALIGN reloc for an alignment
862 power larger than the number of bytes we are deleting. */
863
864 irelalign = NULL;
865 toaddr = sec->size;
866
867 irel = elf_section_data (sec)->relocs;
868 irelend = irel + sec->reloc_count;
869 for (; irel < irelend; irel++)
870 {
871 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
872 && irel->r_offset > addr
873 && count < (1 << irel->r_addend))
874 {
875 irelalign = irel;
876 toaddr = irel->r_offset;
877 break;
878 }
879 }
880
881 /* Actually delete the bytes. */
882 memmove (contents + addr, contents + addr + count,
883 (size_t) (toaddr - addr - count));
884 if (irelalign == NULL)
885 sec->size -= count;
886 else
887 {
888 int i;
889
890 #define NOP_OPCODE (0x0009)
891
892 BFD_ASSERT ((count & 1) == 0);
893 for (i = 0; i < count; i += 2)
894 bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
895 }
896
897 /* Adjust all the relocs. */
898 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
899 {
900 bfd_vma nraddr, stop;
901 bfd_vma start = 0;
902 int insn = 0;
903 int off, adjust, oinsn;
904 bfd_signed_vma voff = 0;
905 bfd_boolean overflow;
906
907 /* Get the new reloc address. */
908 nraddr = irel->r_offset;
909 if ((irel->r_offset > addr
910 && irel->r_offset < toaddr)
911 || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
912 && irel->r_offset == toaddr))
913 nraddr -= count;
914
915 /* See if this reloc was for the bytes we have deleted, in which
916 case we no longer care about it. Don't delete relocs which
917 represent addresses, though. */
918 if (irel->r_offset >= addr
919 && irel->r_offset < addr + count
920 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN
921 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE
922 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA
923 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL)
924 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
925 (int) R_SH_NONE);
926
927 /* If this is a PC relative reloc, see if the range it covers
928 includes the bytes we have deleted. */
929 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
930 {
931 default:
932 break;
933
934 case R_SH_DIR8WPN:
935 case R_SH_IND12W:
936 case R_SH_DIR8WPZ:
937 case R_SH_DIR8WPL:
938 start = irel->r_offset;
939 insn = bfd_get_16 (abfd, contents + nraddr);
940 break;
941 }
942
943 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
944 {
945 default:
946 start = stop = addr;
947 break;
948
949 case R_SH_DIR32:
950 /* If this reloc is against a symbol defined in this
951 section, and the symbol will not be adjusted below, we
952 must check the addend to see it will put the value in
953 range to be adjusted, and hence must be changed. */
954 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
955 {
956 isym = isymbuf + ELF32_R_SYM (irel->r_info);
957 if (isym->st_shndx == sec_shndx
958 && (isym->st_value <= addr
959 || isym->st_value >= toaddr))
960 {
961 bfd_vma val;
962
963 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
964 {
965 val = bfd_get_32 (abfd, contents + nraddr);
966 val += isym->st_value;
967 if (val > addr && val < toaddr)
968 bfd_put_32 (abfd, val - count, contents + nraddr);
969 }
970 else
971 {
972 val = isym->st_value + irel->r_addend;
973 if (val > addr && val < toaddr)
974 irel->r_addend -= count;
975 }
976 }
977 }
978 start = stop = addr;
979 break;
980
981 case R_SH_DIR8WPN:
982 off = insn & 0xff;
983 if (off & 0x80)
984 off -= 0x100;
985 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
986 break;
987
988 case R_SH_IND12W:
989 off = insn & 0xfff;
990 if (! off)
991 {
992 /* This has been made by previous relaxation. Since the
993 relocation will be against an external symbol, the
994 final relocation will just do the right thing. */
995 start = stop = addr;
996 }
997 else
998 {
999 if (off & 0x800)
1000 off -= 0x1000;
1001 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
1002
1003 /* The addend will be against the section symbol, thus
1004 for adjusting the addend, the relevant start is the
1005 start of the section.
1006 N.B. If we want to abandon in-place changes here and
1007 test directly using symbol + addend, we have to take into
1008 account that the addend has already been adjusted by -4. */
1009 if (stop > addr && stop < toaddr)
1010 irel->r_addend -= count;
1011 }
1012 break;
1013
1014 case R_SH_DIR8WPZ:
1015 off = insn & 0xff;
1016 stop = start + 4 + off * 2;
1017 break;
1018
1019 case R_SH_DIR8WPL:
1020 off = insn & 0xff;
1021 stop = (start & ~(bfd_vma) 3) + 4 + off * 4;
1022 break;
1023
1024 case R_SH_SWITCH8:
1025 case R_SH_SWITCH16:
1026 case R_SH_SWITCH32:
1027 /* These relocs types represent
1028 .word L2-L1
1029 The r_addend field holds the difference between the reloc
1030 address and L1. That is the start of the reloc, and
1031 adding in the contents gives us the top. We must adjust
1032 both the r_offset field and the section contents.
1033 N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1034 and the elf bfd r_offset is called r_vaddr. */
1035
1036 stop = irel->r_offset;
1037 start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend);
1038
1039 if (start > addr
1040 && start < toaddr
1041 && (stop <= addr || stop >= toaddr))
1042 irel->r_addend += count;
1043 else if (stop > addr
1044 && stop < toaddr
1045 && (start <= addr || start >= toaddr))
1046 irel->r_addend -= count;
1047
1048 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16)
1049 voff = bfd_get_signed_16 (abfd, contents + nraddr);
1050 else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8)
1051 voff = bfd_get_8 (abfd, contents + nraddr);
1052 else
1053 voff = bfd_get_signed_32 (abfd, contents + nraddr);
1054 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1055
1056 break;
1057
1058 case R_SH_USES:
1059 start = irel->r_offset;
1060 stop = (bfd_vma) ((bfd_signed_vma) start
1061 + (long) irel->r_addend
1062 + 4);
1063 break;
1064 }
1065
1066 if (start > addr
1067 && start < toaddr
1068 && (stop <= addr || stop >= toaddr))
1069 adjust = count;
1070 else if (stop > addr
1071 && stop < toaddr
1072 && (start <= addr || start >= toaddr))
1073 adjust = - count;
1074 else
1075 adjust = 0;
1076
1077 if (adjust != 0)
1078 {
1079 oinsn = insn;
1080 overflow = FALSE;
1081 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
1082 {
1083 default:
1084 abort ();
1085 break;
1086
1087 case R_SH_DIR8WPN:
1088 case R_SH_DIR8WPZ:
1089 insn += adjust / 2;
1090 if ((oinsn & 0xff00) != (insn & 0xff00))
1091 overflow = TRUE;
1092 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1093 break;
1094
1095 case R_SH_IND12W:
1096 insn += adjust / 2;
1097 if ((oinsn & 0xf000) != (insn & 0xf000))
1098 overflow = TRUE;
1099 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1100 break;
1101
1102 case R_SH_DIR8WPL:
1103 BFD_ASSERT (adjust == count || count >= 4);
1104 if (count >= 4)
1105 insn += adjust / 4;
1106 else
1107 {
1108 if ((irel->r_offset & 3) == 0)
1109 ++insn;
1110 }
1111 if ((oinsn & 0xff00) != (insn & 0xff00))
1112 overflow = TRUE;
1113 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1114 break;
1115
1116 case R_SH_SWITCH8:
1117 voff += adjust;
1118 if (voff < 0 || voff >= 0xff)
1119 overflow = TRUE;
1120 bfd_put_8 (abfd, voff, contents + nraddr);
1121 break;
1122
1123 case R_SH_SWITCH16:
1124 voff += adjust;
1125 if (voff < - 0x8000 || voff >= 0x8000)
1126 overflow = TRUE;
1127 bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr);
1128 break;
1129
1130 case R_SH_SWITCH32:
1131 voff += adjust;
1132 bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr);
1133 break;
1134
1135 case R_SH_USES:
1136 irel->r_addend += adjust;
1137 break;
1138 }
1139
1140 if (overflow)
1141 {
1142 _bfd_error_handler
1143 /* xgettext:c-format */
1144 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1145 abfd, (uint64_t) irel->r_offset);
1146 bfd_set_error (bfd_error_bad_value);
1147 return FALSE;
1148 }
1149 }
1150
1151 irel->r_offset = nraddr;
1152 }
1153
1154 /* Look through all the other sections. If there contain any IMM32
1155 relocs against internal symbols which we are not going to adjust
1156 below, we may need to adjust the addends. */
1157 for (o = abfd->sections; o != NULL; o = o->next)
1158 {
1159 Elf_Internal_Rela *internal_relocs;
1160 Elf_Internal_Rela *irelscan, *irelscanend;
1161 bfd_byte *ocontents;
1162
1163 if (o == sec
1164 || (o->flags & SEC_RELOC) == 0
1165 || o->reloc_count == 0)
1166 continue;
1167
1168 /* We always cache the relocs. Perhaps, if info->keep_memory is
1169 FALSE, we should free them, if we are permitted to, when we
1170 leave sh_coff_relax_section. */
1171 internal_relocs = (_bfd_elf_link_read_relocs
1172 (abfd, o, NULL, (Elf_Internal_Rela *) NULL, TRUE));
1173 if (internal_relocs == NULL)
1174 return FALSE;
1175
1176 ocontents = NULL;
1177 irelscanend = internal_relocs + o->reloc_count;
1178 for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
1179 {
1180 /* Dwarf line numbers use R_SH_SWITCH32 relocs. */
1181 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32)
1182 {
1183 bfd_vma start, stop;
1184 bfd_signed_vma voff;
1185
1186 if (ocontents == NULL)
1187 {
1188 if (elf_section_data (o)->this_hdr.contents != NULL)
1189 ocontents = elf_section_data (o)->this_hdr.contents;
1190 else
1191 {
1192 /* We always cache the section contents.
1193 Perhaps, if info->keep_memory is FALSE, we
1194 should free them, if we are permitted to,
1195 when we leave sh_coff_relax_section. */
1196 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1197 {
1198 if (ocontents != NULL)
1199 free (ocontents);
1200 return FALSE;
1201 }
1202
1203 elf_section_data (o)->this_hdr.contents = ocontents;
1204 }
1205 }
1206
1207 stop = irelscan->r_offset;
1208 start
1209 = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend);
1210
1211 /* STOP is in a different section, so it won't change. */
1212 if (start > addr && start < toaddr)
1213 irelscan->r_addend += count;
1214
1215 voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset);
1216 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1217
1218 if (start > addr
1219 && start < toaddr
1220 && (stop <= addr || stop >= toaddr))
1221 bfd_put_signed_32 (abfd, (bfd_vma) voff + count,
1222 ocontents + irelscan->r_offset);
1223 else if (stop > addr
1224 && stop < toaddr
1225 && (start <= addr || start >= toaddr))
1226 bfd_put_signed_32 (abfd, (bfd_vma) voff - count,
1227 ocontents + irelscan->r_offset);
1228 }
1229
1230 if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32)
1231 continue;
1232
1233 if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info)
1234 continue;
1235
1236
1237 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1238 if (isym->st_shndx == sec_shndx
1239 && (isym->st_value <= addr
1240 || isym->st_value >= toaddr))
1241 {
1242 bfd_vma val;
1243
1244 if (ocontents == NULL)
1245 {
1246 if (elf_section_data (o)->this_hdr.contents != NULL)
1247 ocontents = elf_section_data (o)->this_hdr.contents;
1248 else
1249 {
1250 /* We always cache the section contents.
1251 Perhaps, if info->keep_memory is FALSE, we
1252 should free them, if we are permitted to,
1253 when we leave sh_coff_relax_section. */
1254 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1255 {
1256 if (ocontents != NULL)
1257 free (ocontents);
1258 return FALSE;
1259 }
1260
1261 elf_section_data (o)->this_hdr.contents = ocontents;
1262 }
1263 }
1264
1265 val = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
1266 val += isym->st_value;
1267 if (val > addr && val < toaddr)
1268 bfd_put_32 (abfd, val - count,
1269 ocontents + irelscan->r_offset);
1270 }
1271 }
1272 }
1273
1274 /* Adjust the local symbols defined in this section. */
1275 isymend = isymbuf + symtab_hdr->sh_info;
1276 for (isym = isymbuf; isym < isymend; isym++)
1277 {
1278 if (isym->st_shndx == sec_shndx
1279 && isym->st_value > addr
1280 && isym->st_value < toaddr)
1281 isym->st_value -= count;
1282 }
1283
1284 /* Now adjust the global symbols defined in this section. */
1285 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1286 - symtab_hdr->sh_info);
1287 sym_hashes = elf_sym_hashes (abfd);
1288 end_hashes = sym_hashes + symcount;
1289 for (; sym_hashes < end_hashes; sym_hashes++)
1290 {
1291 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1292 if ((sym_hash->root.type == bfd_link_hash_defined
1293 || sym_hash->root.type == bfd_link_hash_defweak)
1294 && sym_hash->root.u.def.section == sec
1295 && sym_hash->root.u.def.value > addr
1296 && sym_hash->root.u.def.value < toaddr)
1297 {
1298 sym_hash->root.u.def.value -= count;
1299 }
1300 }
1301
1302 /* See if we can move the ALIGN reloc forward. We have adjusted
1303 r_offset for it already. */
1304 if (irelalign != NULL)
1305 {
1306 bfd_vma alignto, alignaddr;
1307
1308 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
1309 alignaddr = BFD_ALIGN (irelalign->r_offset,
1310 1 << irelalign->r_addend);
1311 if (alignto != alignaddr)
1312 {
1313 /* Tail recursion. */
1314 return sh_elf_relax_delete_bytes (abfd, sec, alignaddr,
1315 (int) (alignto - alignaddr));
1316 }
1317 }
1318
1319 return TRUE;
1320 }
1321
1322 /* Look for loads and stores which we can align to four byte
1323 boundaries. This is like sh_align_loads in coff-sh.c. */
1324
1325 static bfd_boolean
1326 sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1327 Elf_Internal_Rela *internal_relocs,
1328 bfd_byte *contents ATTRIBUTE_UNUSED,
1329 bfd_boolean *pswapped)
1330 {
1331 Elf_Internal_Rela *irel, *irelend;
1332 bfd_vma *labels = NULL;
1333 bfd_vma *label, *label_end;
1334 bfd_size_type amt;
1335
1336 *pswapped = FALSE;
1337
1338 irelend = internal_relocs + sec->reloc_count;
1339
1340 /* Get all the addresses with labels on them. */
1341 amt = sec->reloc_count;
1342 amt *= sizeof (bfd_vma);
1343 labels = (bfd_vma *) bfd_malloc (amt);
1344 if (labels == NULL)
1345 goto error_return;
1346 label_end = labels;
1347 for (irel = internal_relocs; irel < irelend; irel++)
1348 {
1349 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL)
1350 {
1351 *label_end = irel->r_offset;
1352 ++label_end;
1353 }
1354 }
1355
1356 /* Note that the assembler currently always outputs relocs in
1357 address order. If that ever changes, this code will need to sort
1358 the label values and the relocs. */
1359
1360 label = labels;
1361
1362 for (irel = internal_relocs; irel < irelend; irel++)
1363 {
1364 bfd_vma start, stop;
1365
1366 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE)
1367 continue;
1368
1369 start = irel->r_offset;
1370
1371 for (irel++; irel < irelend; irel++)
1372 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA)
1373 break;
1374 if (irel < irelend)
1375 stop = irel->r_offset;
1376 else
1377 stop = sec->size;
1378
1379 if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns,
1380 internal_relocs, &label,
1381 label_end, start, stop, pswapped))
1382 goto error_return;
1383 }
1384
1385 free (labels);
1386
1387 return TRUE;
1388
1389 error_return:
1390 if (labels != NULL)
1391 free (labels);
1392 return FALSE;
1393 }
1394
1395 /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */
1396
1397 static bfd_boolean
1398 sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs,
1399 bfd_byte *contents, bfd_vma addr)
1400 {
1401 Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs;
1402 unsigned short i1, i2;
1403 Elf_Internal_Rela *irel, *irelend;
1404
1405 /* Swap the instructions themselves. */
1406 i1 = bfd_get_16 (abfd, contents + addr);
1407 i2 = bfd_get_16 (abfd, contents + addr + 2);
1408 bfd_put_16 (abfd, (bfd_vma) i2, contents + addr);
1409 bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2);
1410
1411 /* Adjust all reloc addresses. */
1412 irelend = internal_relocs + sec->reloc_count;
1413 for (irel = internal_relocs; irel < irelend; irel++)
1414 {
1415 enum elf_sh_reloc_type type;
1416 int add;
1417
1418 /* There are a few special types of relocs that we don't want to
1419 adjust. These relocs do not apply to the instruction itself,
1420 but are only associated with the address. */
1421 type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info);
1422 if (type == R_SH_ALIGN
1423 || type == R_SH_CODE
1424 || type == R_SH_DATA
1425 || type == R_SH_LABEL)
1426 continue;
1427
1428 /* If an R_SH_USES reloc points to one of the addresses being
1429 swapped, we must adjust it. It would be incorrect to do this
1430 for a jump, though, since we want to execute both
1431 instructions after the jump. (We have avoided swapping
1432 around a label, so the jump will not wind up executing an
1433 instruction it shouldn't). */
1434 if (type == R_SH_USES)
1435 {
1436 bfd_vma off;
1437
1438 off = irel->r_offset + 4 + irel->r_addend;
1439 if (off == addr)
1440 irel->r_offset += 2;
1441 else if (off == addr + 2)
1442 irel->r_offset -= 2;
1443 }
1444
1445 if (irel->r_offset == addr)
1446 {
1447 irel->r_offset += 2;
1448 add = -2;
1449 }
1450 else if (irel->r_offset == addr + 2)
1451 {
1452 irel->r_offset -= 2;
1453 add = 2;
1454 }
1455 else
1456 add = 0;
1457
1458 if (add != 0)
1459 {
1460 bfd_byte *loc;
1461 unsigned short insn, oinsn;
1462 bfd_boolean overflow;
1463
1464 loc = contents + irel->r_offset;
1465 overflow = FALSE;
1466 switch (type)
1467 {
1468 default:
1469 break;
1470
1471 case R_SH_DIR8WPN:
1472 case R_SH_DIR8WPZ:
1473 insn = bfd_get_16 (abfd, loc);
1474 oinsn = insn;
1475 insn += add / 2;
1476 if ((oinsn & 0xff00) != (insn & 0xff00))
1477 overflow = TRUE;
1478 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1479 break;
1480
1481 case R_SH_IND12W:
1482 insn = bfd_get_16 (abfd, loc);
1483 oinsn = insn;
1484 insn += add / 2;
1485 if ((oinsn & 0xf000) != (insn & 0xf000))
1486 overflow = TRUE;
1487 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1488 break;
1489
1490 case R_SH_DIR8WPL:
1491 /* This reloc ignores the least significant 3 bits of
1492 the program counter before adding in the offset.
1493 This means that if ADDR is at an even address, the
1494 swap will not affect the offset. If ADDR is an at an
1495 odd address, then the instruction will be crossing a
1496 four byte boundary, and must be adjusted. */
1497 if ((addr & 3) != 0)
1498 {
1499 insn = bfd_get_16 (abfd, loc);
1500 oinsn = insn;
1501 insn += add / 2;
1502 if ((oinsn & 0xff00) != (insn & 0xff00))
1503 overflow = TRUE;
1504 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1505 }
1506
1507 break;
1508 }
1509
1510 if (overflow)
1511 {
1512 _bfd_error_handler
1513 /* xgettext:c-format */
1514 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1515 abfd, (uint64_t) irel->r_offset);
1516 bfd_set_error (bfd_error_bad_value);
1517 return FALSE;
1518 }
1519 }
1520 }
1521
1522 return TRUE;
1523 }
1524 \f
1525 /* Describes one of the various PLT styles. */
1526
1527 struct elf_sh_plt_info
1528 {
1529 /* The template for the first PLT entry, or NULL if there is no special
1530 first entry. */
1531 const bfd_byte *plt0_entry;
1532
1533 /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */
1534 bfd_vma plt0_entry_size;
1535
1536 /* Index I is the offset into PLT0_ENTRY of a pointer to
1537 _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE
1538 if there is no such pointer. */
1539 bfd_vma plt0_got_fields[3];
1540
1541 /* The template for a symbol's PLT entry. */
1542 const bfd_byte *symbol_entry;
1543
1544 /* The size of SYMBOL_ENTRY in bytes. */
1545 bfd_vma symbol_entry_size;
1546
1547 /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used
1548 on all targets. The comments by each member indicate the value
1549 that the field must hold. */
1550 struct {
1551 bfd_vma got_entry; /* the address of the symbol's .got.plt entry */
1552 bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */
1553 bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */
1554 bfd_boolean got20; /* TRUE if got_entry points to a movi20
1555 instruction (instead of a constant pool
1556 entry). */
1557 } symbol_fields;
1558
1559 /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
1560 bfd_vma symbol_resolve_offset;
1561
1562 /* A different PLT layout which can be used for the first
1563 MAX_SHORT_PLT entries. It must share the same plt0. NULL in
1564 other cases. */
1565 const struct elf_sh_plt_info *short_plt;
1566 };
1567
1568 /* The size in bytes of an entry in the procedure linkage table. */
1569
1570 #define ELF_PLT_ENTRY_SIZE 28
1571
1572 /* First entry in an absolute procedure linkage table look like this. */
1573
1574 /* Note - this code has been "optimised" not to use r2. r2 is used by
1575 GCC to return the address of large structures, so it should not be
1576 corrupted here. This does mean however, that this PLT does not conform
1577 to the SH PIC ABI. That spec says that r0 contains the type of the PLT
1578 and r2 contains the GOT id. This version stores the GOT id in r0 and
1579 ignores the type. Loaders can easily detect this difference however,
1580 since the type will always be 0 or 8, and the GOT ids will always be
1581 greater than or equal to 12. */
1582 static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1583 {
1584 0xd0, 0x05, /* mov.l 2f,r0 */
1585 0x60, 0x02, /* mov.l @r0,r0 */
1586 0x2f, 0x06, /* mov.l r0,@-r15 */
1587 0xd0, 0x03, /* mov.l 1f,r0 */
1588 0x60, 0x02, /* mov.l @r0,r0 */
1589 0x40, 0x2b, /* jmp @r0 */
1590 0x60, 0xf6, /* mov.l @r15+,r0 */
1591 0x00, 0x09, /* nop */
1592 0x00, 0x09, /* nop */
1593 0x00, 0x09, /* nop */
1594 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1595 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1596 };
1597
1598 static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1599 {
1600 0x05, 0xd0, /* mov.l 2f,r0 */
1601 0x02, 0x60, /* mov.l @r0,r0 */
1602 0x06, 0x2f, /* mov.l r0,@-r15 */
1603 0x03, 0xd0, /* mov.l 1f,r0 */
1604 0x02, 0x60, /* mov.l @r0,r0 */
1605 0x2b, 0x40, /* jmp @r0 */
1606 0xf6, 0x60, /* mov.l @r15+,r0 */
1607 0x09, 0x00, /* nop */
1608 0x09, 0x00, /* nop */
1609 0x09, 0x00, /* nop */
1610 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1611 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1612 };
1613
1614 /* Sebsequent entries in an absolute procedure linkage table look like
1615 this. */
1616
1617 static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1618 {
1619 0xd0, 0x04, /* mov.l 1f,r0 */
1620 0x60, 0x02, /* mov.l @(r0,r12),r0 */
1621 0xd1, 0x02, /* mov.l 0f,r1 */
1622 0x40, 0x2b, /* jmp @r0 */
1623 0x60, 0x13, /* mov r1,r0 */
1624 0xd1, 0x03, /* mov.l 2f,r1 */
1625 0x40, 0x2b, /* jmp @r0 */
1626 0x00, 0x09, /* nop */
1627 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1628 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1629 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1630 };
1631
1632 static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1633 {
1634 0x04, 0xd0, /* mov.l 1f,r0 */
1635 0x02, 0x60, /* mov.l @r0,r0 */
1636 0x02, 0xd1, /* mov.l 0f,r1 */
1637 0x2b, 0x40, /* jmp @r0 */
1638 0x13, 0x60, /* mov r1,r0 */
1639 0x03, 0xd1, /* mov.l 2f,r1 */
1640 0x2b, 0x40, /* jmp @r0 */
1641 0x09, 0x00, /* nop */
1642 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1643 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1644 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1645 };
1646
1647 /* Entries in a PIC procedure linkage table look like this. */
1648
1649 static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1650 {
1651 0xd0, 0x04, /* mov.l 1f,r0 */
1652 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1653 0x40, 0x2b, /* jmp @r0 */
1654 0x00, 0x09, /* nop */
1655 0x50, 0xc2, /* mov.l @(8,r12),r0 */
1656 0xd1, 0x03, /* mov.l 2f,r1 */
1657 0x40, 0x2b, /* jmp @r0 */
1658 0x50, 0xc1, /* mov.l @(4,r12),r0 */
1659 0x00, 0x09, /* nop */
1660 0x00, 0x09, /* nop */
1661 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1662 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1663 };
1664
1665 static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1666 {
1667 0x04, 0xd0, /* mov.l 1f,r0 */
1668 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1669 0x2b, 0x40, /* jmp @r0 */
1670 0x09, 0x00, /* nop */
1671 0xc2, 0x50, /* mov.l @(8,r12),r0 */
1672 0x03, 0xd1, /* mov.l 2f,r1 */
1673 0x2b, 0x40, /* jmp @r0 */
1674 0xc1, 0x50, /* mov.l @(4,r12),r0 */
1675 0x09, 0x00, /* nop */
1676 0x09, 0x00, /* nop */
1677 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1678 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1679 };
1680
1681 static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1682 {
1683 {
1684 /* Big-endian non-PIC. */
1685 elf_sh_plt0_entry_be,
1686 ELF_PLT_ENTRY_SIZE,
1687 { MINUS_ONE, 24, 20 },
1688 elf_sh_plt_entry_be,
1689 ELF_PLT_ENTRY_SIZE,
1690 { 20, 16, 24, FALSE },
1691 8,
1692 NULL
1693 },
1694 {
1695 /* Little-endian non-PIC. */
1696 elf_sh_plt0_entry_le,
1697 ELF_PLT_ENTRY_SIZE,
1698 { MINUS_ONE, 24, 20 },
1699 elf_sh_plt_entry_le,
1700 ELF_PLT_ENTRY_SIZE,
1701 { 20, 16, 24, FALSE },
1702 8,
1703 NULL
1704 },
1705 },
1706 {
1707 {
1708 /* Big-endian PIC. */
1709 elf_sh_plt0_entry_be,
1710 ELF_PLT_ENTRY_SIZE,
1711 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1712 elf_sh_pic_plt_entry_be,
1713 ELF_PLT_ENTRY_SIZE,
1714 { 20, MINUS_ONE, 24, FALSE },
1715 8,
1716 NULL
1717 },
1718 {
1719 /* Little-endian PIC. */
1720 elf_sh_plt0_entry_le,
1721 ELF_PLT_ENTRY_SIZE,
1722 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1723 elf_sh_pic_plt_entry_le,
1724 ELF_PLT_ENTRY_SIZE,
1725 { 20, MINUS_ONE, 24, FALSE },
1726 8,
1727 NULL
1728 },
1729 }
1730 };
1731
1732 #define VXWORKS_PLT_HEADER_SIZE 12
1733 #define VXWORKS_PLT_ENTRY_SIZE 24
1734
1735 static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] =
1736 {
1737 0xd1, 0x01, /* mov.l @(8,pc),r1 */
1738 0x61, 0x12, /* mov.l @r1,r1 */
1739 0x41, 0x2b, /* jmp @r1 */
1740 0x00, 0x09, /* nop */
1741 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1742 };
1743
1744 static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] =
1745 {
1746 0x01, 0xd1, /* mov.l @(8,pc),r1 */
1747 0x12, 0x61, /* mov.l @r1,r1 */
1748 0x2b, 0x41, /* jmp @r1 */
1749 0x09, 0x00, /* nop */
1750 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1751 };
1752
1753 static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1754 {
1755 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1756 0x60, 0x02, /* mov.l @r0,r0 */
1757 0x40, 0x2b, /* jmp @r0 */
1758 0x00, 0x09, /* nop */
1759 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1760 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1761 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */
1762 0x00, 0x09, /* nop */
1763 0x00, 0x09, /* nop */
1764 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1765 };
1766
1767 static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1768 {
1769 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1770 0x02, 0x60, /* mov.l @r0,r0 */
1771 0x2b, 0x40, /* jmp @r0 */
1772 0x09, 0x00, /* nop */
1773 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1774 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1775 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */
1776 0x09, 0x00, /* nop */
1777 0x09, 0x00, /* nop */
1778 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1779 };
1780
1781 static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1782 {
1783 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1784 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1785 0x40, 0x2b, /* jmp @r0 */
1786 0x00, 0x09, /* nop */
1787 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1788 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1789 0x51, 0xc2, /* mov.l @(8,r12),r1 */
1790 0x41, 0x2b, /* jmp @r1 */
1791 0x00, 0x09, /* nop */
1792 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1793 };
1794
1795 static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1796 {
1797 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1798 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1799 0x2b, 0x40, /* jmp @r0 */
1800 0x09, 0x00, /* nop */
1801 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1802 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1803 0xc2, 0x51, /* mov.l @(8,r12),r1 */
1804 0x2b, 0x41, /* jmp @r1 */
1805 0x09, 0x00, /* nop */
1806 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1807 };
1808
1809 static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = {
1810 {
1811 {
1812 /* Big-endian non-PIC. */
1813 vxworks_sh_plt0_entry_be,
1814 VXWORKS_PLT_HEADER_SIZE,
1815 { MINUS_ONE, MINUS_ONE, 8 },
1816 vxworks_sh_plt_entry_be,
1817 VXWORKS_PLT_ENTRY_SIZE,
1818 { 8, 14, 20, FALSE },
1819 12,
1820 NULL
1821 },
1822 {
1823 /* Little-endian non-PIC. */
1824 vxworks_sh_plt0_entry_le,
1825 VXWORKS_PLT_HEADER_SIZE,
1826 { MINUS_ONE, MINUS_ONE, 8 },
1827 vxworks_sh_plt_entry_le,
1828 VXWORKS_PLT_ENTRY_SIZE,
1829 { 8, 14, 20, FALSE },
1830 12,
1831 NULL
1832 },
1833 },
1834 {
1835 {
1836 /* Big-endian PIC. */
1837 NULL,
1838 0,
1839 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1840 vxworks_sh_pic_plt_entry_be,
1841 VXWORKS_PLT_ENTRY_SIZE,
1842 { 8, MINUS_ONE, 20, FALSE },
1843 12,
1844 NULL
1845 },
1846 {
1847 /* Little-endian PIC. */
1848 NULL,
1849 0,
1850 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1851 vxworks_sh_pic_plt_entry_le,
1852 VXWORKS_PLT_ENTRY_SIZE,
1853 { 8, MINUS_ONE, 20, FALSE },
1854 12,
1855 NULL
1856 },
1857 }
1858 };
1859
1860 /* FDPIC PLT entries. Two unimplemented optimizations for lazy
1861 binding are to omit the lazy binding stub when linking with -z now
1862 and to move lazy binding stubs into a separate region for better
1863 cache behavior. */
1864
1865 #define FDPIC_PLT_ENTRY_SIZE 28
1866 #define FDPIC_PLT_LAZY_OFFSET 20
1867
1868 /* FIXME: The lazy binding stub requires a plt0 - which may need to be
1869 duplicated if it is out of range, or which can be inlined. So
1870 right now it is always inlined, which wastes a word per stub. It
1871 might be easier to handle the duplication if we put the lazy
1872 stubs separately. */
1873
1874 static const bfd_byte fdpic_sh_plt_entry_be[FDPIC_PLT_ENTRY_SIZE] =
1875 {
1876 0xd0, 0x02, /* mov.l @(12,pc),r0 */
1877 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1878 0x70, 0x04, /* add #4, r0 */
1879 0x41, 0x2b, /* jmp @r1 */
1880 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1881 0x00, 0x09, /* nop */
1882 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1883 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1884 0x60, 0xc2, /* mov.l @r12,r0 */
1885 0x40, 0x2b, /* jmp @r0 */
1886 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1887 0x00, 0x09, /* nop */
1888 };
1889
1890 static const bfd_byte fdpic_sh_plt_entry_le[FDPIC_PLT_ENTRY_SIZE] =
1891 {
1892 0x02, 0xd0, /* mov.l @(12,pc),r0 */
1893 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1894 0x04, 0x70, /* add #4, r0 */
1895 0x2b, 0x41, /* jmp @r1 */
1896 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1897 0x09, 0x00, /* nop */
1898 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1899 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1900 0xc2, 0x60, /* mov.l @r12,r0 */
1901 0x2b, 0x40, /* jmp @r0 */
1902 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1903 0x09, 0x00, /* nop */
1904 };
1905
1906 static const struct elf_sh_plt_info fdpic_sh_plts[2] = {
1907 {
1908 /* Big-endian PIC. */
1909 NULL,
1910 0,
1911 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1912 fdpic_sh_plt_entry_be,
1913 FDPIC_PLT_ENTRY_SIZE,
1914 { 12, MINUS_ONE, 16, FALSE },
1915 FDPIC_PLT_LAZY_OFFSET,
1916 NULL
1917 },
1918 {
1919 /* Little-endian PIC. */
1920 NULL,
1921 0,
1922 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1923 fdpic_sh_plt_entry_le,
1924 FDPIC_PLT_ENTRY_SIZE,
1925 { 12, MINUS_ONE, 16, FALSE },
1926 FDPIC_PLT_LAZY_OFFSET,
1927 NULL
1928 },
1929 };
1930
1931 /* On SH2A, we can use the movi20 instruction to generate shorter PLT
1932 entries for the first 64K slots. We use the normal FDPIC PLT entry
1933 past that point; we could also use movi20s, which might be faster,
1934 but would not be any smaller. */
1935
1936 #define FDPIC_SH2A_PLT_ENTRY_SIZE 24
1937 #define FDPIC_SH2A_PLT_LAZY_OFFSET 16
1938
1939 static const bfd_byte fdpic_sh2a_plt_entry_be[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1940 {
1941 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1942 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1943 0x70, 0x04, /* add #4, r0 */
1944 0x41, 0x2b, /* jmp @r1 */
1945 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1946 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1947 0x60, 0xc2, /* mov.l @r12,r0 */
1948 0x40, 0x2b, /* jmp @r0 */
1949 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1950 0x00, 0x09, /* nop */
1951 };
1952
1953 static const bfd_byte fdpic_sh2a_plt_entry_le[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1954 {
1955 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1956 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1957 0x04, 0x70, /* add #4, r0 */
1958 0x2b, 0x41, /* jmp @r1 */
1959 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1960 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1961 0xc2, 0x60, /* mov.l @r12,r0 */
1962 0x2b, 0x40, /* jmp @r0 */
1963 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1964 0x09, 0x00, /* nop */
1965 };
1966
1967 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_be = {
1968 /* Big-endian FDPIC, max index 64K. */
1969 NULL,
1970 0,
1971 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1972 fdpic_sh2a_plt_entry_be,
1973 FDPIC_SH2A_PLT_ENTRY_SIZE,
1974 { 0, MINUS_ONE, 12, TRUE },
1975 FDPIC_SH2A_PLT_LAZY_OFFSET,
1976 NULL
1977 };
1978
1979 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_le = {
1980 /* Little-endian FDPIC, max index 64K. */
1981 NULL,
1982 0,
1983 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1984 fdpic_sh2a_plt_entry_le,
1985 FDPIC_SH2A_PLT_ENTRY_SIZE,
1986 { 0, MINUS_ONE, 12, TRUE },
1987 FDPIC_SH2A_PLT_LAZY_OFFSET,
1988 NULL
1989 };
1990
1991 static const struct elf_sh_plt_info fdpic_sh2a_plts[2] = {
1992 {
1993 /* Big-endian PIC. */
1994 NULL,
1995 0,
1996 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1997 fdpic_sh_plt_entry_be,
1998 FDPIC_PLT_ENTRY_SIZE,
1999 { 12, MINUS_ONE, 16, FALSE },
2000 FDPIC_PLT_LAZY_OFFSET,
2001 &fdpic_sh2a_short_plt_be
2002 },
2003 {
2004 /* Little-endian PIC. */
2005 NULL,
2006 0,
2007 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
2008 fdpic_sh_plt_entry_le,
2009 FDPIC_PLT_ENTRY_SIZE,
2010 { 12, MINUS_ONE, 16, FALSE },
2011 FDPIC_PLT_LAZY_OFFSET,
2012 &fdpic_sh2a_short_plt_le
2013 },
2014 };
2015
2016 /* Return the type of PLT associated with ABFD. PIC_P is true if
2017 the object is position-independent. */
2018
2019 static const struct elf_sh_plt_info *
2020 get_plt_info (bfd *abfd, bfd_boolean pic_p)
2021 {
2022 if (fdpic_object_p (abfd))
2023 {
2024 /* If any input file requires SH2A we can use a shorter PLT
2025 sequence. */
2026 if (sh_get_arch_from_bfd_mach (bfd_get_mach (abfd)) & arch_sh2a_base)
2027 return &fdpic_sh2a_plts[!bfd_big_endian (abfd)];
2028 else
2029 return &fdpic_sh_plts[!bfd_big_endian (abfd)];
2030 }
2031 if (vxworks_object_p (abfd))
2032 return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)];
2033 return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
2034 }
2035
2036 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2037 VALUE is the field's value and CODE_P is true if VALUE refers to code,
2038 not data. */
2039
2040 inline static void
2041 install_plt_field (bfd *output_bfd, bfd_boolean code_p ATTRIBUTE_UNUSED,
2042 unsigned long value, bfd_byte *addr)
2043 {
2044 bfd_put_32 (output_bfd, value, addr);
2045 }
2046
2047 /* The number of PLT entries which can use a shorter PLT, if any.
2048 Currently always 64K, since only SH-2A FDPIC uses this; a
2049 20-bit movi20 can address that many function descriptors below
2050 _GLOBAL_OFFSET_TABLE_. */
2051 #define MAX_SHORT_PLT 65536
2052
2053 /* Return the index of the PLT entry at byte offset OFFSET. */
2054
2055 static bfd_vma
2056 get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset)
2057 {
2058 bfd_vma plt_index = 0;
2059
2060 offset -= info->plt0_entry_size;
2061 if (info->short_plt != NULL)
2062 {
2063 if (offset > MAX_SHORT_PLT * info->short_plt->symbol_entry_size)
2064 {
2065 plt_index = MAX_SHORT_PLT;
2066 offset -= MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2067 }
2068 else
2069 info = info->short_plt;
2070 }
2071 return plt_index + offset / info->symbol_entry_size;
2072 }
2073
2074 /* Do the inverse operation. */
2075
2076 static bfd_vma
2077 get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma plt_index)
2078 {
2079 bfd_vma offset = 0;
2080
2081 if (info->short_plt != NULL)
2082 {
2083 if (plt_index > MAX_SHORT_PLT)
2084 {
2085 offset = MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2086 plt_index -= MAX_SHORT_PLT;
2087 }
2088 else
2089 info = info->short_plt;
2090 }
2091 return (offset + info->plt0_entry_size
2092 + (plt_index * info->symbol_entry_size));
2093 }
2094
2095 union gotref
2096 {
2097 bfd_signed_vma refcount;
2098 bfd_vma offset;
2099 };
2100
2101 /* sh ELF linker hash entry. */
2102
2103 struct elf_sh_link_hash_entry
2104 {
2105 struct elf_link_hash_entry root;
2106
2107 /* Track dynamic relocs copied for this symbol. */
2108 struct elf_dyn_relocs *dyn_relocs;
2109
2110 bfd_signed_vma gotplt_refcount;
2111
2112 /* A local function descriptor, for FDPIC. The refcount counts
2113 R_SH_FUNCDESC, R_SH_GOTOFFFUNCDESC, and R_SH_GOTOFFFUNCDESC20
2114 relocations; the PLT and GOT entry are accounted
2115 for separately. After adjust_dynamic_symbol, the offset is
2116 MINUS_ONE if there is no local descriptor (dynamic linker
2117 managed and no PLT entry, or undefined weak non-dynamic).
2118 During check_relocs we do not yet know whether the local
2119 descriptor will be canonical. */
2120 union gotref funcdesc;
2121
2122 /* How many of the above refcounted relocations were R_SH_FUNCDESC,
2123 and thus require fixups or relocations. */
2124 bfd_signed_vma abs_funcdesc_refcount;
2125
2126 enum got_type {
2127 GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE, GOT_FUNCDESC
2128 } got_type;
2129 };
2130
2131 #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2132
2133 struct sh_elf_obj_tdata
2134 {
2135 struct elf_obj_tdata root;
2136
2137 /* got_type for each local got entry. */
2138 char *local_got_type;
2139
2140 /* Function descriptor refcount and offset for each local symbol. */
2141 union gotref *local_funcdesc;
2142 };
2143
2144 #define sh_elf_tdata(abfd) \
2145 ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2146
2147 #define sh_elf_local_got_type(abfd) \
2148 (sh_elf_tdata (abfd)->local_got_type)
2149
2150 #define sh_elf_local_funcdesc(abfd) \
2151 (sh_elf_tdata (abfd)->local_funcdesc)
2152
2153 #define is_sh_elf(bfd) \
2154 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2155 && elf_tdata (bfd) != NULL \
2156 && elf_object_id (bfd) == SH_ELF_DATA)
2157
2158 /* Override the generic function because we need to store sh_elf_obj_tdata
2159 as the specific tdata. */
2160
2161 static bfd_boolean
2162 sh_elf_mkobject (bfd *abfd)
2163 {
2164 return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata),
2165 SH_ELF_DATA);
2166 }
2167
2168 /* sh ELF linker hash table. */
2169
2170 struct elf_sh_link_hash_table
2171 {
2172 struct elf_link_hash_table root;
2173
2174 /* Short-cuts to get to dynamic linker sections. */
2175 asection *sdynbss;
2176 asection *srelbss;
2177 asection *sfuncdesc;
2178 asection *srelfuncdesc;
2179 asection *srofixup;
2180
2181 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2182 asection *srelplt2;
2183
2184 /* Small local sym cache. */
2185 struct sym_cache sym_cache;
2186
2187 /* A counter or offset to track a TLS got entry. */
2188 union
2189 {
2190 bfd_signed_vma refcount;
2191 bfd_vma offset;
2192 } tls_ldm_got;
2193
2194 /* The type of PLT to use. */
2195 const struct elf_sh_plt_info *plt_info;
2196
2197 /* True if the target system is VxWorks. */
2198 bfd_boolean vxworks_p;
2199
2200 /* True if the target system uses FDPIC. */
2201 bfd_boolean fdpic_p;
2202 };
2203
2204 /* Traverse an sh ELF linker hash table. */
2205
2206 #define sh_elf_link_hash_traverse(table, func, info) \
2207 (elf_link_hash_traverse \
2208 (&(table)->root, \
2209 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2210 (info)))
2211
2212 /* Get the sh ELF linker hash table from a link_info structure. */
2213
2214 #define sh_elf_hash_table(p) \
2215 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2216 == SH_ELF_DATA ? ((struct elf_sh_link_hash_table *) ((p)->hash)) : NULL)
2217
2218 /* Create an entry in an sh ELF linker hash table. */
2219
2220 static struct bfd_hash_entry *
2221 sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2222 struct bfd_hash_table *table,
2223 const char *string)
2224 {
2225 struct elf_sh_link_hash_entry *ret =
2226 (struct elf_sh_link_hash_entry *) entry;
2227
2228 /* Allocate the structure if it has not already been allocated by a
2229 subclass. */
2230 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2231 ret = ((struct elf_sh_link_hash_entry *)
2232 bfd_hash_allocate (table,
2233 sizeof (struct elf_sh_link_hash_entry)));
2234 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2235 return (struct bfd_hash_entry *) ret;
2236
2237 /* Call the allocation method of the superclass. */
2238 ret = ((struct elf_sh_link_hash_entry *)
2239 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2240 table, string));
2241 if (ret != (struct elf_sh_link_hash_entry *) NULL)
2242 {
2243 ret->dyn_relocs = NULL;
2244 ret->gotplt_refcount = 0;
2245 ret->funcdesc.refcount = 0;
2246 ret->abs_funcdesc_refcount = 0;
2247 ret->got_type = GOT_UNKNOWN;
2248 }
2249
2250 return (struct bfd_hash_entry *) ret;
2251 }
2252
2253 /* Create an sh ELF linker hash table. */
2254
2255 static struct bfd_link_hash_table *
2256 sh_elf_link_hash_table_create (bfd *abfd)
2257 {
2258 struct elf_sh_link_hash_table *ret;
2259 size_t amt = sizeof (struct elf_sh_link_hash_table);
2260
2261 ret = (struct elf_sh_link_hash_table *) bfd_zmalloc (amt);
2262 if (ret == (struct elf_sh_link_hash_table *) NULL)
2263 return NULL;
2264
2265 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2266 sh_elf_link_hash_newfunc,
2267 sizeof (struct elf_sh_link_hash_entry),
2268 SH_ELF_DATA))
2269 {
2270 free (ret);
2271 return NULL;
2272 }
2273
2274 ret->vxworks_p = vxworks_object_p (abfd);
2275 ret->fdpic_p = fdpic_object_p (abfd);
2276
2277 return &ret->root.root;
2278 }
2279
2280 static bfd_boolean
2281 sh_elf_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2282 struct bfd_link_info *info, asection *p)
2283 {
2284 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
2285
2286 /* Non-FDPIC binaries do not need dynamic symbols for sections. */
2287 if (!htab->fdpic_p)
2288 return TRUE;
2289
2290 /* We need dynamic symbols for every section, since segments can
2291 relocate independently. */
2292 switch (elf_section_data (p)->this_hdr.sh_type)
2293 {
2294 case SHT_PROGBITS:
2295 case SHT_NOBITS:
2296 /* If sh_type is yet undecided, assume it could be
2297 SHT_PROGBITS/SHT_NOBITS. */
2298 case SHT_NULL:
2299 return FALSE;
2300
2301 /* There shouldn't be section relative relocations
2302 against any other section. */
2303 default:
2304 return TRUE;
2305 }
2306 }
2307
2308 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2309 shortcuts to them in our hash table. */
2310
2311 static bfd_boolean
2312 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2313 {
2314 struct elf_sh_link_hash_table *htab;
2315
2316 if (! _bfd_elf_create_got_section (dynobj, info))
2317 return FALSE;
2318
2319 htab = sh_elf_hash_table (info);
2320 if (htab == NULL)
2321 return FALSE;
2322
2323 htab->sfuncdesc = bfd_make_section_anyway_with_flags (dynobj, ".got.funcdesc",
2324 (SEC_ALLOC | SEC_LOAD
2325 | SEC_HAS_CONTENTS
2326 | SEC_IN_MEMORY
2327 | SEC_LINKER_CREATED));
2328 if (htab->sfuncdesc == NULL
2329 || !bfd_set_section_alignment (htab->sfuncdesc, 2))
2330 return FALSE;
2331
2332 htab->srelfuncdesc = bfd_make_section_anyway_with_flags (dynobj,
2333 ".rela.got.funcdesc",
2334 (SEC_ALLOC | SEC_LOAD
2335 | SEC_HAS_CONTENTS
2336 | SEC_IN_MEMORY
2337 | SEC_LINKER_CREATED
2338 | SEC_READONLY));
2339 if (htab->srelfuncdesc == NULL
2340 || !bfd_set_section_alignment (htab->srelfuncdesc, 2))
2341 return FALSE;
2342
2343 /* Also create .rofixup. */
2344 htab->srofixup = bfd_make_section_anyway_with_flags (dynobj, ".rofixup",
2345 (SEC_ALLOC | SEC_LOAD
2346 | SEC_HAS_CONTENTS
2347 | SEC_IN_MEMORY
2348 | SEC_LINKER_CREATED
2349 | SEC_READONLY));
2350 if (htab->srofixup == NULL
2351 || !bfd_set_section_alignment (htab->srofixup, 2))
2352 return FALSE;
2353
2354 return TRUE;
2355 }
2356
2357 /* Create dynamic sections when linking against a dynamic object. */
2358
2359 static bfd_boolean
2360 sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2361 {
2362 struct elf_sh_link_hash_table *htab;
2363 flagword flags, pltflags;
2364 asection *s;
2365 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2366 int ptralign = 0;
2367
2368 switch (bed->s->arch_size)
2369 {
2370 case 32:
2371 ptralign = 2;
2372 break;
2373
2374 case 64:
2375 ptralign = 3;
2376 break;
2377
2378 default:
2379 bfd_set_error (bfd_error_bad_value);
2380 return FALSE;
2381 }
2382
2383 htab = sh_elf_hash_table (info);
2384 if (htab == NULL)
2385 return FALSE;
2386
2387 if (htab->root.dynamic_sections_created)
2388 return TRUE;
2389
2390 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2391 .rel[a].bss sections. */
2392
2393 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2394 | SEC_LINKER_CREATED);
2395
2396 pltflags = flags;
2397 pltflags |= SEC_CODE;
2398 if (bed->plt_not_loaded)
2399 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2400 if (bed->plt_readonly)
2401 pltflags |= SEC_READONLY;
2402
2403 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
2404 htab->root.splt = s;
2405 if (s == NULL
2406 || !bfd_set_section_alignment (s, bed->plt_alignment))
2407 return FALSE;
2408
2409 if (bed->want_plt_sym)
2410 {
2411 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2412 .plt section. */
2413 struct elf_link_hash_entry *h;
2414 struct bfd_link_hash_entry *bh = NULL;
2415
2416 if (! (_bfd_generic_link_add_one_symbol
2417 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2418 (bfd_vma) 0, (const char *) NULL, FALSE,
2419 get_elf_backend_data (abfd)->collect, &bh)))
2420 return FALSE;
2421
2422 h = (struct elf_link_hash_entry *) bh;
2423 h->def_regular = 1;
2424 h->type = STT_OBJECT;
2425 htab->root.hplt = h;
2426
2427 if (bfd_link_pic (info)
2428 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2429 return FALSE;
2430 }
2431
2432 s = bfd_make_section_anyway_with_flags (abfd,
2433 bed->default_use_rela_p
2434 ? ".rela.plt" : ".rel.plt",
2435 flags | SEC_READONLY);
2436 htab->root.srelplt = s;
2437 if (s == NULL
2438 || !bfd_set_section_alignment (s, ptralign))
2439 return FALSE;
2440
2441 if (htab->root.sgot == NULL
2442 && !create_got_section (abfd, info))
2443 return FALSE;
2444
2445 if (bed->want_dynbss)
2446 {
2447 /* The .dynbss section is a place to put symbols which are defined
2448 by dynamic objects, are referenced by regular objects, and are
2449 not functions. We must allocate space for them in the process
2450 image and use a R_*_COPY reloc to tell the dynamic linker to
2451 initialize them at run time. The linker script puts the .dynbss
2452 section into the .bss section of the final image. */
2453 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
2454 SEC_ALLOC | SEC_LINKER_CREATED);
2455 htab->sdynbss = s;
2456 if (s == NULL)
2457 return FALSE;
2458
2459 /* The .rel[a].bss section holds copy relocs. This section is not
2460 normally needed. We need to create it here, though, so that the
2461 linker will map it to an output section. We can't just create it
2462 only if we need it, because we will not know whether we need it
2463 until we have seen all the input files, and the first time the
2464 main linker code calls BFD after examining all the input files
2465 (size_dynamic_sections) the input sections have already been
2466 mapped to the output sections. If the section turns out not to
2467 be needed, we can discard it later. We will never need this
2468 section when generating a shared object, since they do not use
2469 copy relocs. */
2470 if (! bfd_link_pic (info))
2471 {
2472 s = bfd_make_section_anyway_with_flags (abfd,
2473 (bed->default_use_rela_p
2474 ? ".rela.bss" : ".rel.bss"),
2475 flags | SEC_READONLY);
2476 htab->srelbss = s;
2477 if (s == NULL
2478 || !bfd_set_section_alignment (s, ptralign))
2479 return FALSE;
2480 }
2481 }
2482
2483 if (htab->vxworks_p)
2484 {
2485 if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2486 return FALSE;
2487 }
2488
2489 return TRUE;
2490 }
2491 \f
2492 /* Find dynamic relocs for H that apply to read-only sections. */
2493
2494 static asection *
2495 readonly_dynrelocs (struct elf_link_hash_entry *h)
2496 {
2497 struct elf_dyn_relocs *p;
2498
2499 for (p = sh_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
2500 {
2501 asection *s = p->sec->output_section;
2502
2503 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2504 return p->sec;
2505 }
2506 return NULL;
2507 }
2508
2509 /* Adjust a symbol defined by a dynamic object and referenced by a
2510 regular object. The current definition is in some section of the
2511 dynamic object, but we're not including those sections. We have to
2512 change the definition to something the rest of the link can
2513 understand. */
2514
2515 static bfd_boolean
2516 sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2517 struct elf_link_hash_entry *h)
2518 {
2519 struct elf_sh_link_hash_table *htab;
2520 asection *s;
2521
2522 htab = sh_elf_hash_table (info);
2523 if (htab == NULL)
2524 return FALSE;
2525
2526 /* Make sure we know what is going on here. */
2527 BFD_ASSERT (htab->root.dynobj != NULL
2528 && (h->needs_plt
2529 || h->is_weakalias
2530 || (h->def_dynamic
2531 && h->ref_regular
2532 && !h->def_regular)));
2533
2534 /* If this is a function, put it in the procedure linkage table. We
2535 will fill in the contents of the procedure linkage table later,
2536 when we know the address of the .got section. */
2537 if (h->type == STT_FUNC
2538 || h->needs_plt)
2539 {
2540 if (h->plt.refcount <= 0
2541 || SYMBOL_CALLS_LOCAL (info, h)
2542 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2543 && h->root.type == bfd_link_hash_undefweak))
2544 {
2545 /* This case can occur if we saw a PLT reloc in an input
2546 file, but the symbol was never referred to by a dynamic
2547 object. In such a case, we don't actually need to build
2548 a procedure linkage table, and we can just do a REL32
2549 reloc instead. */
2550 h->plt.offset = (bfd_vma) -1;
2551 h->needs_plt = 0;
2552 }
2553
2554 return TRUE;
2555 }
2556 else
2557 h->plt.offset = (bfd_vma) -1;
2558
2559 /* If this is a weak symbol, and there is a real definition, the
2560 processor independent code will have arranged for us to see the
2561 real definition first, and we can just use the same value. */
2562 if (h->is_weakalias)
2563 {
2564 struct elf_link_hash_entry *def = weakdef (h);
2565 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2566 h->root.u.def.section = def->root.u.def.section;
2567 h->root.u.def.value = def->root.u.def.value;
2568 if (info->nocopyreloc)
2569 h->non_got_ref = def->non_got_ref;
2570 return TRUE;
2571 }
2572
2573 /* This is a reference to a symbol defined by a dynamic object which
2574 is not a function. */
2575
2576 /* If we are creating a shared library, we must presume that the
2577 only references to the symbol are via the global offset table.
2578 For such cases we need not do anything here; the relocations will
2579 be handled correctly by relocate_section. */
2580 if (bfd_link_pic (info))
2581 return TRUE;
2582
2583 /* If there are no references to this symbol that do not use the
2584 GOT, we don't need to generate a copy reloc. */
2585 if (!h->non_got_ref)
2586 return TRUE;
2587
2588 /* If -z nocopyreloc was given, we won't generate them either. */
2589 if (0 && info->nocopyreloc)
2590 {
2591 h->non_got_ref = 0;
2592 return TRUE;
2593 }
2594
2595 /* If we don't find any dynamic relocs in read-only sections, then
2596 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2597 if (0 && !readonly_dynrelocs (h))
2598 {
2599 h->non_got_ref = 0;
2600 return TRUE;
2601 }
2602
2603 /* We must allocate the symbol in our .dynbss section, which will
2604 become part of the .bss section of the executable. There will be
2605 an entry for this symbol in the .dynsym section. The dynamic
2606 object will contain position independent code, so all references
2607 from the dynamic object to this symbol will go through the global
2608 offset table. The dynamic linker will use the .dynsym entry to
2609 determine the address it must put in the global offset table, so
2610 both the dynamic object and the regular object will refer to the
2611 same memory location for the variable. */
2612
2613 s = htab->sdynbss;
2614 BFD_ASSERT (s != NULL);
2615
2616 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2617 copy the initial value out of the dynamic object and into the
2618 runtime process image. We need to remember the offset into the
2619 .rela.bss section we are going to use. */
2620 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2621 {
2622 asection *srel;
2623
2624 srel = htab->srelbss;
2625 BFD_ASSERT (srel != NULL);
2626 srel->size += sizeof (Elf32_External_Rela);
2627 h->needs_copy = 1;
2628 }
2629
2630 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2631 }
2632
2633 /* Allocate space in .plt, .got and associated reloc sections for
2634 dynamic relocs. */
2635
2636 static bfd_boolean
2637 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2638 {
2639 struct bfd_link_info *info;
2640 struct elf_sh_link_hash_table *htab;
2641 struct elf_sh_link_hash_entry *eh;
2642 struct elf_dyn_relocs *p;
2643
2644 if (h->root.type == bfd_link_hash_indirect)
2645 return TRUE;
2646
2647 info = (struct bfd_link_info *) inf;
2648 htab = sh_elf_hash_table (info);
2649 if (htab == NULL)
2650 return FALSE;
2651
2652 eh = (struct elf_sh_link_hash_entry *) h;
2653 if ((h->got.refcount > 0
2654 || h->forced_local)
2655 && eh->gotplt_refcount > 0)
2656 {
2657 /* The symbol has been forced local, or we have some direct got refs,
2658 so treat all the gotplt refs as got refs. */
2659 h->got.refcount += eh->gotplt_refcount;
2660 if (h->plt.refcount >= eh->gotplt_refcount)
2661 h->plt.refcount -= eh->gotplt_refcount;
2662 }
2663
2664 if (htab->root.dynamic_sections_created
2665 && h->plt.refcount > 0
2666 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2667 || h->root.type != bfd_link_hash_undefweak))
2668 {
2669 /* Make sure this symbol is output as a dynamic symbol.
2670 Undefined weak syms won't yet be marked as dynamic. */
2671 if (h->dynindx == -1
2672 && !h->forced_local)
2673 {
2674 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2675 return FALSE;
2676 }
2677
2678 if (bfd_link_pic (info)
2679 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2680 {
2681 asection *s = htab->root.splt;
2682 const struct elf_sh_plt_info *plt_info;
2683
2684 /* If this is the first .plt entry, make room for the special
2685 first entry. */
2686 if (s->size == 0)
2687 s->size += htab->plt_info->plt0_entry_size;
2688
2689 h->plt.offset = s->size;
2690
2691 /* If this symbol is not defined in a regular file, and we are
2692 not generating a shared library, then set the symbol to this
2693 location in the .plt. This is required to make function
2694 pointers compare as equal between the normal executable and
2695 the shared library. Skip this for FDPIC, since the
2696 function's address will be the address of the canonical
2697 function descriptor. */
2698 if (!htab->fdpic_p && !bfd_link_pic (info) && !h->def_regular)
2699 {
2700 h->root.u.def.section = s;
2701 h->root.u.def.value = h->plt.offset;
2702 }
2703
2704 /* Make room for this entry. */
2705 plt_info = htab->plt_info;
2706 if (plt_info->short_plt != NULL
2707 && (get_plt_index (plt_info->short_plt, s->size) < MAX_SHORT_PLT))
2708 plt_info = plt_info->short_plt;
2709 s->size += plt_info->symbol_entry_size;
2710
2711 /* We also need to make an entry in the .got.plt section, which
2712 will be placed in the .got section by the linker script. */
2713 if (!htab->fdpic_p)
2714 htab->root.sgotplt->size += 4;
2715 else
2716 htab->root.sgotplt->size += 8;
2717
2718 /* We also need to make an entry in the .rel.plt section. */
2719 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
2720
2721 if (htab->vxworks_p && !bfd_link_pic (info))
2722 {
2723 /* VxWorks executables have a second set of relocations
2724 for each PLT entry. They go in a separate relocation
2725 section, which is processed by the kernel loader. */
2726
2727 /* There is a relocation for the initial PLT entry:
2728 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2729 if (h->plt.offset == htab->plt_info->plt0_entry_size)
2730 htab->srelplt2->size += sizeof (Elf32_External_Rela);
2731
2732 /* There are two extra relocations for each subsequent
2733 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2734 and an R_SH_DIR32 relocation for the PLT entry. */
2735 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2736 }
2737 }
2738 else
2739 {
2740 h->plt.offset = (bfd_vma) -1;
2741 h->needs_plt = 0;
2742 }
2743 }
2744 else
2745 {
2746 h->plt.offset = (bfd_vma) -1;
2747 h->needs_plt = 0;
2748 }
2749
2750 if (h->got.refcount > 0)
2751 {
2752 asection *s;
2753 bfd_boolean dyn;
2754 enum got_type got_type = sh_elf_hash_entry (h)->got_type;
2755
2756 /* Make sure this symbol is output as a dynamic symbol.
2757 Undefined weak syms won't yet be marked as dynamic. */
2758 if (h->dynindx == -1
2759 && !h->forced_local)
2760 {
2761 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2762 return FALSE;
2763 }
2764
2765 s = htab->root.sgot;
2766 h->got.offset = s->size;
2767 s->size += 4;
2768 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2769 if (got_type == GOT_TLS_GD)
2770 s->size += 4;
2771 dyn = htab->root.dynamic_sections_created;
2772 if (!dyn)
2773 {
2774 /* No dynamic relocations required. */
2775 if (htab->fdpic_p && !bfd_link_pic (info)
2776 && h->root.type != bfd_link_hash_undefweak
2777 && (got_type == GOT_NORMAL || got_type == GOT_FUNCDESC))
2778 htab->srofixup->size += 4;
2779 }
2780 /* No dynamic relocations required when IE->LE conversion happens. */
2781 else if (got_type == GOT_TLS_IE
2782 && !h->def_dynamic
2783 && !bfd_link_pic (info))
2784 ;
2785 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2786 R_SH_TLS_GD needs one if local symbol and two if global. */
2787 else if ((got_type == GOT_TLS_GD && h->dynindx == -1)
2788 || got_type == GOT_TLS_IE)
2789 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2790 else if (got_type == GOT_TLS_GD)
2791 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2792 else if (got_type == GOT_FUNCDESC)
2793 {
2794 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2795 htab->srofixup->size += 4;
2796 else
2797 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2798 }
2799 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2800 || h->root.type != bfd_link_hash_undefweak)
2801 && (bfd_link_pic (info)
2802 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2803 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2804 else if (htab->fdpic_p
2805 && !bfd_link_pic (info)
2806 && got_type == GOT_NORMAL
2807 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2808 || h->root.type != bfd_link_hash_undefweak))
2809 htab->srofixup->size += 4;
2810 }
2811 else
2812 h->got.offset = (bfd_vma) -1;
2813
2814 /* Allocate space for any dynamic relocations to function
2815 descriptors, canonical or otherwise. We need to relocate the
2816 reference unless it resolves to zero, which only happens for
2817 undefined weak symbols (either non-default visibility, or when
2818 static linking). Any GOT slot is accounted for elsewhere. */
2819 if (eh->abs_funcdesc_refcount > 0
2820 && (h->root.type != bfd_link_hash_undefweak
2821 || (htab->root.dynamic_sections_created
2822 && ! SYMBOL_CALLS_LOCAL (info, h))))
2823 {
2824 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2825 htab->srofixup->size += eh->abs_funcdesc_refcount * 4;
2826 else
2827 htab->root.srelgot->size
2828 += eh->abs_funcdesc_refcount * sizeof (Elf32_External_Rela);
2829 }
2830
2831 /* We must allocate a function descriptor if there are references to
2832 a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and
2833 the dynamic linker isn't going to allocate it. None of this
2834 applies if we already created one in .got.plt, but if the
2835 canonical function descriptor can be in this object, there
2836 won't be a PLT entry at all. */
2837 if ((eh->funcdesc.refcount > 0
2838 || (h->got.offset != MINUS_ONE && eh->got_type == GOT_FUNCDESC))
2839 && h->root.type != bfd_link_hash_undefweak
2840 && SYMBOL_FUNCDESC_LOCAL (info, h))
2841 {
2842 /* Make room for this function descriptor. */
2843 eh->funcdesc.offset = htab->sfuncdesc->size;
2844 htab->sfuncdesc->size += 8;
2845
2846 /* We will need a relocation or two fixups to initialize the
2847 function descriptor, so allocate those too. */
2848 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
2849 htab->srofixup->size += 8;
2850 else
2851 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
2852 }
2853
2854 if (eh->dyn_relocs == NULL)
2855 return TRUE;
2856
2857 /* In the shared -Bsymbolic case, discard space allocated for
2858 dynamic pc-relative relocs against symbols which turn out to be
2859 defined in regular objects. For the normal shared case, discard
2860 space for pc-relative relocs that have become local due to symbol
2861 visibility changes. */
2862
2863 if (bfd_link_pic (info))
2864 {
2865 if (SYMBOL_CALLS_LOCAL (info, h))
2866 {
2867 struct elf_dyn_relocs **pp;
2868
2869 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2870 {
2871 p->count -= p->pc_count;
2872 p->pc_count = 0;
2873 if (p->count == 0)
2874 *pp = p->next;
2875 else
2876 pp = &p->next;
2877 }
2878 }
2879
2880 if (htab->vxworks_p)
2881 {
2882 struct elf_dyn_relocs **pp;
2883
2884 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2885 {
2886 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2887 *pp = p->next;
2888 else
2889 pp = &p->next;
2890 }
2891 }
2892
2893 /* Also discard relocs on undefined weak syms with non-default
2894 visibility. */
2895 if (eh->dyn_relocs != NULL
2896 && h->root.type == bfd_link_hash_undefweak)
2897 {
2898 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2899 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2900 eh->dyn_relocs = NULL;
2901
2902 /* Make sure undefined weak symbols are output as a dynamic
2903 symbol in PIEs. */
2904 else if (h->dynindx == -1
2905 && !h->forced_local)
2906 {
2907 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2908 return FALSE;
2909 }
2910 }
2911 }
2912 else
2913 {
2914 /* For the non-shared case, discard space for relocs against
2915 symbols which turn out to need copy relocs or are not
2916 dynamic. */
2917
2918 if (!h->non_got_ref
2919 && ((h->def_dynamic
2920 && !h->def_regular)
2921 || (htab->root.dynamic_sections_created
2922 && (h->root.type == bfd_link_hash_undefweak
2923 || h->root.type == bfd_link_hash_undefined))))
2924 {
2925 /* Make sure this symbol is output as a dynamic symbol.
2926 Undefined weak syms won't yet be marked as dynamic. */
2927 if (h->dynindx == -1
2928 && !h->forced_local)
2929 {
2930 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2931 return FALSE;
2932 }
2933
2934 /* If that succeeded, we know we'll be keeping all the
2935 relocs. */
2936 if (h->dynindx != -1)
2937 goto keep;
2938 }
2939
2940 eh->dyn_relocs = NULL;
2941
2942 keep: ;
2943 }
2944
2945 /* Finally, allocate space. */
2946 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2947 {
2948 asection *sreloc = elf_section_data (p->sec)->sreloc;
2949 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2950
2951 /* If we need relocations, we do not need fixups. */
2952 if (htab->fdpic_p && !bfd_link_pic (info))
2953 htab->srofixup->size -= 4 * (p->count - p->pc_count);
2954 }
2955
2956 return TRUE;
2957 }
2958
2959 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2960 read-only sections. */
2961
2962 static bfd_boolean
2963 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
2964 {
2965 asection *sec;
2966
2967 if (h->root.type == bfd_link_hash_indirect)
2968 return TRUE;
2969
2970 sec = readonly_dynrelocs (h);
2971 if (sec != NULL)
2972 {
2973 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
2974
2975 info->flags |= DF_TEXTREL;
2976 info->callbacks->minfo
2977 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
2978 sec->owner, h->root.root.string, sec);
2979
2980 /* Not an error, just cut short the traversal. */
2981 return FALSE;
2982 }
2983 return TRUE;
2984 }
2985
2986 /* This function is called after all the input files have been read,
2987 and the input sections have been assigned to output sections.
2988 It's a convenient place to determine the PLT style. */
2989
2990 static bfd_boolean
2991 sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2992 {
2993 sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd,
2994 bfd_link_pic (info));
2995
2996 if (sh_elf_hash_table (info)->fdpic_p && !bfd_link_relocatable (info)
2997 && !bfd_elf_stack_segment_size (output_bfd, info,
2998 "__stacksize", DEFAULT_STACK_SIZE))
2999 return FALSE;
3000 return TRUE;
3001 }
3002
3003 /* Set the sizes of the dynamic sections. */
3004
3005 static bfd_boolean
3006 sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3007 struct bfd_link_info *info)
3008 {
3009 struct elf_sh_link_hash_table *htab;
3010 bfd *dynobj;
3011 asection *s;
3012 bfd_boolean relocs;
3013 bfd *ibfd;
3014
3015 htab = sh_elf_hash_table (info);
3016 if (htab == NULL)
3017 return FALSE;
3018
3019 dynobj = htab->root.dynobj;
3020 BFD_ASSERT (dynobj != NULL);
3021
3022 if (htab->root.dynamic_sections_created)
3023 {
3024 /* Set the contents of the .interp section to the interpreter. */
3025 if (bfd_link_executable (info) && !info->nointerp)
3026 {
3027 s = bfd_get_linker_section (dynobj, ".interp");
3028 BFD_ASSERT (s != NULL);
3029 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3030 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3031 }
3032 }
3033
3034 /* Set up .got offsets for local syms, and space for local dynamic
3035 relocs. */
3036 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3037 {
3038 bfd_signed_vma *local_got;
3039 bfd_signed_vma *end_local_got;
3040 union gotref *local_funcdesc, *end_local_funcdesc;
3041 char *local_got_type;
3042 bfd_size_type locsymcount;
3043 Elf_Internal_Shdr *symtab_hdr;
3044 asection *srel;
3045
3046 if (! is_sh_elf (ibfd))
3047 continue;
3048
3049 for (s = ibfd->sections; s != NULL; s = s->next)
3050 {
3051 struct elf_dyn_relocs *p;
3052
3053 for (p = ((struct elf_dyn_relocs *)
3054 elf_section_data (s)->local_dynrel);
3055 p != NULL;
3056 p = p->next)
3057 {
3058 if (! bfd_is_abs_section (p->sec)
3059 && bfd_is_abs_section (p->sec->output_section))
3060 {
3061 /* Input section has been discarded, either because
3062 it is a copy of a linkonce section or due to
3063 linker script /DISCARD/, so we'll be discarding
3064 the relocs too. */
3065 }
3066 else if (htab->vxworks_p
3067 && strcmp (p->sec->output_section->name,
3068 ".tls_vars") == 0)
3069 {
3070 /* Relocations in vxworks .tls_vars sections are
3071 handled specially by the loader. */
3072 }
3073 else if (p->count != 0)
3074 {
3075 srel = elf_section_data (p->sec)->sreloc;
3076 srel->size += p->count * sizeof (Elf32_External_Rela);
3077 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3078 {
3079 info->flags |= DF_TEXTREL;
3080 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
3081 p->sec->owner, p->sec);
3082 }
3083
3084 /* If we need relocations, we do not need fixups. */
3085 if (htab->fdpic_p && !bfd_link_pic (info))
3086 htab->srofixup->size -= 4 * (p->count - p->pc_count);
3087 }
3088 }
3089 }
3090
3091 symtab_hdr = &elf_symtab_hdr (ibfd);
3092 locsymcount = symtab_hdr->sh_info;
3093 s = htab->root.sgot;
3094 srel = htab->root.srelgot;
3095
3096 local_got = elf_local_got_refcounts (ibfd);
3097 if (local_got)
3098 {
3099 end_local_got = local_got + locsymcount;
3100 local_got_type = sh_elf_local_got_type (ibfd);
3101 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3102 for (; local_got < end_local_got; ++local_got)
3103 {
3104 if (*local_got > 0)
3105 {
3106 *local_got = s->size;
3107 s->size += 4;
3108 if (*local_got_type == GOT_TLS_GD)
3109 s->size += 4;
3110 if (bfd_link_pic (info))
3111 srel->size += sizeof (Elf32_External_Rela);
3112 else
3113 htab->srofixup->size += 4;
3114
3115 if (*local_got_type == GOT_FUNCDESC)
3116 {
3117 if (local_funcdesc == NULL)
3118 {
3119 bfd_size_type size;
3120
3121 size = locsymcount * sizeof (union gotref);
3122 local_funcdesc = (union gotref *) bfd_zalloc (ibfd,
3123 size);
3124 if (local_funcdesc == NULL)
3125 return FALSE;
3126 sh_elf_local_funcdesc (ibfd) = local_funcdesc;
3127 local_funcdesc += (local_got
3128 - elf_local_got_refcounts (ibfd));
3129 }
3130 local_funcdesc->refcount++;
3131 ++local_funcdesc;
3132 }
3133 }
3134 else
3135 *local_got = (bfd_vma) -1;
3136 ++local_got_type;
3137 }
3138 }
3139
3140 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3141 if (local_funcdesc)
3142 {
3143 end_local_funcdesc = local_funcdesc + locsymcount;
3144
3145 for (; local_funcdesc < end_local_funcdesc; ++local_funcdesc)
3146 {
3147 if (local_funcdesc->refcount > 0)
3148 {
3149 local_funcdesc->offset = htab->sfuncdesc->size;
3150 htab->sfuncdesc->size += 8;
3151 if (!bfd_link_pic (info))
3152 htab->srofixup->size += 8;
3153 else
3154 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
3155 }
3156 else
3157 local_funcdesc->offset = MINUS_ONE;
3158 }
3159 }
3160
3161 }
3162
3163 if (htab->tls_ldm_got.refcount > 0)
3164 {
3165 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3166 relocs. */
3167 htab->tls_ldm_got.offset = htab->root.sgot->size;
3168 htab->root.sgot->size += 8;
3169 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
3170 }
3171 else
3172 htab->tls_ldm_got.offset = -1;
3173
3174 /* Only the reserved entries should be present. For FDPIC, they go at
3175 the end of .got.plt. */
3176 if (htab->fdpic_p)
3177 {
3178 BFD_ASSERT (htab->root.sgotplt && htab->root.sgotplt->size == 12);
3179 htab->root.sgotplt->size = 0;
3180 }
3181
3182 /* Allocate global sym .plt and .got entries, and space for global
3183 sym dynamic relocs. */
3184 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3185
3186 /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
3187 end of the FDPIC .got.plt. */
3188 if (htab->fdpic_p)
3189 {
3190 htab->root.hgot->root.u.def.value = htab->root.sgotplt->size;
3191 htab->root.sgotplt->size += 12;
3192 }
3193
3194 /* At the very end of the .rofixup section is a pointer to the GOT. */
3195 if (htab->fdpic_p && htab->srofixup != NULL)
3196 htab->srofixup->size += 4;
3197
3198 /* We now have determined the sizes of the various dynamic sections.
3199 Allocate memory for them. */
3200 relocs = FALSE;
3201 for (s = dynobj->sections; s != NULL; s = s->next)
3202 {
3203 if ((s->flags & SEC_LINKER_CREATED) == 0)
3204 continue;
3205
3206 if (s == htab->root.splt
3207 || s == htab->root.sgot
3208 || s == htab->root.sgotplt
3209 || s == htab->sfuncdesc
3210 || s == htab->srofixup
3211 || s == htab->sdynbss)
3212 {
3213 /* Strip this section if we don't need it; see the
3214 comment below. */
3215 }
3216 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
3217 {
3218 if (s->size != 0 && s != htab->root.srelplt && s != htab->srelplt2)
3219 relocs = TRUE;
3220
3221 /* We use the reloc_count field as a counter if we need
3222 to copy relocs into the output file. */
3223 s->reloc_count = 0;
3224 }
3225 else
3226 {
3227 /* It's not one of our sections, so don't allocate space. */
3228 continue;
3229 }
3230
3231 if (s->size == 0)
3232 {
3233 /* If we don't need this section, strip it from the
3234 output file. This is mostly to handle .rela.bss and
3235 .rela.plt. We must create both sections in
3236 create_dynamic_sections, because they must be created
3237 before the linker maps input sections to output
3238 sections. The linker does that before
3239 adjust_dynamic_symbol is called, and it is that
3240 function which decides whether anything needs to go
3241 into these sections. */
3242
3243 s->flags |= SEC_EXCLUDE;
3244 continue;
3245 }
3246
3247 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3248 continue;
3249
3250 /* Allocate memory for the section contents. We use bfd_zalloc
3251 here in case unused entries are not reclaimed before the
3252 section's contents are written out. This should not happen,
3253 but this way if it does, we get a R_SH_NONE reloc instead
3254 of garbage. */
3255 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3256 if (s->contents == NULL)
3257 return FALSE;
3258 }
3259
3260 if (htab->root.dynamic_sections_created)
3261 {
3262 /* Add some entries to the .dynamic section. We fill in the
3263 values later, in sh_elf_finish_dynamic_sections, but we
3264 must add the entries now so that we get the correct size for
3265 the .dynamic section. The DT_DEBUG entry is filled in by the
3266 dynamic linker and used by the debugger. */
3267 #define add_dynamic_entry(TAG, VAL) \
3268 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3269
3270 if (bfd_link_executable (info))
3271 {
3272 if (! add_dynamic_entry (DT_DEBUG, 0))
3273 return FALSE;
3274 }
3275
3276 if (htab->root.splt->size != 0)
3277 {
3278 if (! add_dynamic_entry (DT_PLTGOT, 0)
3279 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
3280 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
3281 || ! add_dynamic_entry (DT_JMPREL, 0))
3282 return FALSE;
3283 }
3284 else if ((elf_elfheader (output_bfd)->e_flags & EF_SH_FDPIC))
3285 {
3286 if (! add_dynamic_entry (DT_PLTGOT, 0))
3287 return FALSE;
3288 }
3289
3290 if (relocs)
3291 {
3292 if (! add_dynamic_entry (DT_RELA, 0)
3293 || ! add_dynamic_entry (DT_RELASZ, 0)
3294 || ! add_dynamic_entry (DT_RELAENT,
3295 sizeof (Elf32_External_Rela)))
3296 return FALSE;
3297
3298 /* If any dynamic relocs apply to a read-only section,
3299 then we need a DT_TEXTREL entry. */
3300 if ((info->flags & DF_TEXTREL) == 0)
3301 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info);
3302
3303 if ((info->flags & DF_TEXTREL) != 0)
3304 {
3305 if (! add_dynamic_entry (DT_TEXTREL, 0))
3306 return FALSE;
3307 }
3308 }
3309 if (htab->vxworks_p
3310 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3311 return FALSE;
3312 }
3313 #undef add_dynamic_entry
3314
3315 return TRUE;
3316 }
3317 \f
3318 /* Add a dynamic relocation to the SRELOC section. */
3319
3320 inline static bfd_vma
3321 sh_elf_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
3322 int reloc_type, long dynindx, bfd_vma addend)
3323 {
3324 Elf_Internal_Rela outrel;
3325 bfd_vma reloc_offset;
3326
3327 outrel.r_offset = offset;
3328 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
3329 outrel.r_addend = addend;
3330
3331 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rela);
3332 BFD_ASSERT (reloc_offset < sreloc->size);
3333 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3334 sreloc->contents + reloc_offset);
3335 sreloc->reloc_count++;
3336
3337 return reloc_offset;
3338 }
3339
3340 /* Add an FDPIC read-only fixup. */
3341
3342 inline static void
3343 sh_elf_add_rofixup (bfd *output_bfd, asection *srofixup, bfd_vma offset)
3344 {
3345 bfd_vma fixup_offset;
3346
3347 fixup_offset = srofixup->reloc_count++ * 4;
3348 BFD_ASSERT (fixup_offset < srofixup->size);
3349 bfd_put_32 (output_bfd, offset, srofixup->contents + fixup_offset);
3350 }
3351
3352 /* Return the offset of the generated .got section from the
3353 _GLOBAL_OFFSET_TABLE_ symbol. */
3354
3355 static bfd_signed_vma
3356 sh_elf_got_offset (struct elf_sh_link_hash_table *htab)
3357 {
3358 return (htab->root.sgot->output_offset - htab->root.sgotplt->output_offset
3359 - htab->root.hgot->root.u.def.value);
3360 }
3361
3362 /* Find the segment number in which OSEC, and output section, is
3363 located. */
3364
3365 static unsigned
3366 sh_elf_osec_to_segment (bfd *output_bfd, asection *osec)
3367 {
3368 Elf_Internal_Phdr *p = NULL;
3369
3370 if (output_bfd->xvec->flavour == bfd_target_elf_flavour
3371 /* PR ld/17110: Do not look for output segments in an input bfd. */
3372 && output_bfd->direction != read_direction)
3373 p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
3374
3375 /* FIXME: Nothing ever says what this index is relative to. The kernel
3376 supplies data in terms of the number of load segments but this is
3377 a phdr index and the first phdr may not be a load segment. */
3378 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
3379 }
3380
3381 static bfd_boolean
3382 sh_elf_osec_readonly_p (bfd *output_bfd, asection *osec)
3383 {
3384 unsigned seg = sh_elf_osec_to_segment (output_bfd, osec);
3385
3386 return (seg != (unsigned) -1
3387 && ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W));
3388 }
3389
3390 /* Generate the initial contents of a local function descriptor, along
3391 with any relocations or fixups required. */
3392 static bfd_boolean
3393 sh_elf_initialize_funcdesc (bfd *output_bfd,
3394 struct bfd_link_info *info,
3395 struct elf_link_hash_entry *h,
3396 bfd_vma offset,
3397 asection *section,
3398 bfd_vma value)
3399 {
3400 struct elf_sh_link_hash_table *htab;
3401 int dynindx;
3402 bfd_vma addr, seg;
3403
3404 htab = sh_elf_hash_table (info);
3405
3406 /* FIXME: The ABI says that the offset to the function goes in the
3407 descriptor, along with the segment index. We're RELA, so it could
3408 go in the reloc instead... */
3409
3410 if (h != NULL && SYMBOL_CALLS_LOCAL (info, h))
3411 {
3412 section = h->root.u.def.section;
3413 value = h->root.u.def.value;
3414 }
3415
3416 if (h == NULL || SYMBOL_CALLS_LOCAL (info, h))
3417 {
3418 dynindx = elf_section_data (section->output_section)->dynindx;
3419 addr = value + section->output_offset;
3420 seg = sh_elf_osec_to_segment (output_bfd, section->output_section);
3421 }
3422 else
3423 {
3424 BFD_ASSERT (h->dynindx != -1);
3425 dynindx = h->dynindx;
3426 addr = seg = 0;
3427 }
3428
3429 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
3430 {
3431 if (h == NULL || h->root.type != bfd_link_hash_undefweak)
3432 {
3433 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3434 offset
3435 + htab->sfuncdesc->output_section->vma
3436 + htab->sfuncdesc->output_offset);
3437 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3438 offset + 4
3439 + htab->sfuncdesc->output_section->vma
3440 + htab->sfuncdesc->output_offset);
3441 }
3442
3443 /* There are no dynamic relocations so fill in the final
3444 address and gp value (barring fixups). */
3445 addr += section->output_section->vma;
3446 seg = htab->root.hgot->root.u.def.value
3447 + htab->root.hgot->root.u.def.section->output_section->vma
3448 + htab->root.hgot->root.u.def.section->output_offset;
3449 }
3450 else
3451 sh_elf_add_dyn_reloc (output_bfd, htab->srelfuncdesc,
3452 offset
3453 + htab->sfuncdesc->output_section->vma
3454 + htab->sfuncdesc->output_offset,
3455 R_SH_FUNCDESC_VALUE, dynindx, 0);
3456
3457 bfd_put_32 (output_bfd, addr, htab->sfuncdesc->contents + offset);
3458 bfd_put_32 (output_bfd, seg, htab->sfuncdesc->contents + offset + 4);
3459
3460 return TRUE;
3461 }
3462
3463 /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
3464 VALUE is the field's value. Return bfd_reloc_ok if successful or an error
3465 otherwise. */
3466
3467 static bfd_reloc_status_type
3468 install_movi20_field (bfd *output_bfd, unsigned long relocation,
3469 bfd *input_bfd, asection *input_section,
3470 bfd_byte *contents, bfd_vma offset)
3471 {
3472 unsigned long cur_val;
3473 bfd_byte *addr;
3474 bfd_reloc_status_type r;
3475
3476 if (offset > bfd_get_section_limit (input_bfd, input_section))
3477 return bfd_reloc_outofrange;
3478
3479 r = bfd_check_overflow (complain_overflow_signed, 20, 0,
3480 bfd_arch_bits_per_address (input_bfd), relocation);
3481 if (r != bfd_reloc_ok)
3482 return r;
3483
3484 addr = contents + offset;
3485 cur_val = bfd_get_16 (output_bfd, addr);
3486 bfd_put_16 (output_bfd, cur_val | ((relocation & 0xf0000) >> 12), addr);
3487 bfd_put_16 (output_bfd, relocation & 0xffff, addr + 2);
3488
3489 return bfd_reloc_ok;
3490 }
3491
3492 /* Relocate an SH ELF section. */
3493
3494 static bfd_boolean
3495 sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3496 bfd *input_bfd, asection *input_section,
3497 bfd_byte *contents, Elf_Internal_Rela *relocs,
3498 Elf_Internal_Sym *local_syms,
3499 asection **local_sections)
3500 {
3501 struct elf_sh_link_hash_table *htab;
3502 Elf_Internal_Shdr *symtab_hdr;
3503 struct elf_link_hash_entry **sym_hashes;
3504 Elf_Internal_Rela *rel, *relend;
3505 bfd_vma *local_got_offsets;
3506 asection *sgot = NULL;
3507 asection *sgotplt = NULL;
3508 asection *splt = NULL;
3509 asection *sreloc = NULL;
3510 asection *srelgot = NULL;
3511 bfd_boolean is_vxworks_tls;
3512 unsigned isec_segment, got_segment, plt_segment, check_segment[2];
3513 bfd_boolean fdpic_p = FALSE;
3514
3515 if (!is_sh_elf (input_bfd))
3516 {
3517 bfd_set_error (bfd_error_wrong_format);
3518 return FALSE;
3519 }
3520
3521 htab = sh_elf_hash_table (info);
3522 if (htab != NULL)
3523 {
3524 sgot = htab->root.sgot;
3525 sgotplt = htab->root.sgotplt;
3526 srelgot = htab->root.srelgot;
3527 splt = htab->root.splt;
3528 fdpic_p = htab->fdpic_p;
3529 }
3530 symtab_hdr = &elf_symtab_hdr (input_bfd);
3531 sym_hashes = elf_sym_hashes (input_bfd);
3532 local_got_offsets = elf_local_got_offsets (input_bfd);
3533
3534 isec_segment = sh_elf_osec_to_segment (output_bfd,
3535 input_section->output_section);
3536 if (fdpic_p && sgot)
3537 got_segment = sh_elf_osec_to_segment (output_bfd,
3538 sgot->output_section);
3539 else
3540 got_segment = -1;
3541 if (fdpic_p && splt)
3542 plt_segment = sh_elf_osec_to_segment (output_bfd,
3543 splt->output_section);
3544 else
3545 plt_segment = -1;
3546
3547 /* We have to handle relocations in vxworks .tls_vars sections
3548 specially, because the dynamic loader is 'weird'. */
3549 is_vxworks_tls = (htab && htab->vxworks_p && bfd_link_pic (info)
3550 && !strcmp (input_section->output_section->name,
3551 ".tls_vars"));
3552
3553 rel = relocs;
3554 relend = relocs + input_section->reloc_count;
3555 for (; rel < relend; rel++)
3556 {
3557 int r_type;
3558 reloc_howto_type *howto;
3559 unsigned long r_symndx;
3560 Elf_Internal_Sym *sym;
3561 asection *sec;
3562 struct elf_link_hash_entry *h;
3563 bfd_vma relocation;
3564 bfd_vma addend = (bfd_vma) 0;
3565 bfd_reloc_status_type r;
3566 bfd_vma off;
3567 enum got_type got_type;
3568 const char *symname = NULL;
3569 bfd_boolean resolved_to_zero;
3570
3571 r_symndx = ELF32_R_SYM (rel->r_info);
3572
3573 r_type = ELF32_R_TYPE (rel->r_info);
3574
3575 /* Many of the relocs are only used for relaxing, and are
3576 handled entirely by the relaxation code. */
3577 if (r_type >= (int) R_SH_GNU_VTINHERIT
3578 && r_type <= (int) R_SH_LABEL)
3579 continue;
3580 if (r_type == (int) R_SH_NONE)
3581 continue;
3582
3583 if (r_type < 0
3584 || r_type >= R_SH_max
3585 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3586 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3587 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3588 && r_type <= (int) R_SH_LAST_INVALID_RELOC_2)
3589 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3590 && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3591 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3592 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3593 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3594 && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3595 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_6
3596 && r_type <= (int) R_SH_LAST_INVALID_RELOC_6))
3597 {
3598 bfd_set_error (bfd_error_bad_value);
3599 return FALSE;
3600 }
3601
3602 howto = get_howto_table (output_bfd) + r_type;
3603
3604 /* For relocs that aren't partial_inplace, we get the addend from
3605 the relocation. */
3606 if (! howto->partial_inplace)
3607 addend = rel->r_addend;
3608
3609 resolved_to_zero = FALSE;
3610 h = NULL;
3611 sym = NULL;
3612 sec = NULL;
3613 check_segment[0] = -1;
3614 check_segment[1] = -1;
3615 if (r_symndx < symtab_hdr->sh_info)
3616 {
3617 sym = local_syms + r_symndx;
3618 sec = local_sections[r_symndx];
3619
3620 symname = bfd_elf_string_from_elf_section
3621 (input_bfd, symtab_hdr->sh_link, sym->st_name);
3622 if (symname == NULL || *symname == '\0')
3623 symname = bfd_section_name (sec);
3624
3625 relocation = (sec->output_section->vma
3626 + sec->output_offset
3627 + sym->st_value);
3628
3629 if (sec != NULL && discarded_section (sec))
3630 /* Handled below. */
3631 ;
3632 else if (bfd_link_relocatable (info))
3633 {
3634 /* This is a relocatable link. We don't have to change
3635 anything, unless the reloc is against a section symbol,
3636 in which case we have to adjust according to where the
3637 section symbol winds up in the output section. */
3638 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3639 {
3640 if (! howto->partial_inplace)
3641 {
3642 /* For relocations with the addend in the
3643 relocation, we need just to update the addend.
3644 All real relocs are of type partial_inplace; this
3645 code is mostly for completeness. */
3646 rel->r_addend += sec->output_offset;
3647
3648 continue;
3649 }
3650
3651 /* Relocs of type partial_inplace need to pick up the
3652 contents in the contents and add the offset resulting
3653 from the changed location of the section symbol.
3654 Using _bfd_final_link_relocate (e.g. goto
3655 final_link_relocate) here would be wrong, because
3656 relocations marked pc_relative would get the current
3657 location subtracted, and we must only do that at the
3658 final link. */
3659 r = _bfd_relocate_contents (howto, input_bfd,
3660 sec->output_offset
3661 + sym->st_value,
3662 contents + rel->r_offset);
3663 goto relocation_done;
3664 }
3665
3666 continue;
3667 }
3668 else if (! howto->partial_inplace)
3669 {
3670 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3671 addend = rel->r_addend;
3672 }
3673 else if ((sec->flags & SEC_MERGE)
3674 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3675 {
3676 asection *msec;
3677
3678 if (howto->rightshift || howto->src_mask != 0xffffffff)
3679 {
3680 _bfd_error_handler
3681 /* xgettext:c-format */
3682 (_("%pB(%pA+%#" PRIx64 "): "
3683 "%s relocation against SEC_MERGE section"),
3684 input_bfd, input_section,
3685 (uint64_t) rel->r_offset, howto->name);
3686 return FALSE;
3687 }
3688
3689 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3690 msec = sec;
3691 addend =
3692 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3693 - relocation;
3694 addend += msec->output_section->vma + msec->output_offset;
3695 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3696 addend = 0;
3697 }
3698 }
3699 else
3700 {
3701 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3702
3703 relocation = 0;
3704 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3705 symname = h->root.root.string;
3706 while (h->root.type == bfd_link_hash_indirect
3707 || h->root.type == bfd_link_hash_warning)
3708 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3709 if (h->root.type == bfd_link_hash_defined
3710 || h->root.type == bfd_link_hash_defweak)
3711 {
3712 bfd_boolean dyn;
3713
3714 dyn = htab ? htab->root.dynamic_sections_created : FALSE;
3715 sec = h->root.u.def.section;
3716 /* In these cases, we don't need the relocation value.
3717 We check specially because in some obscure cases
3718 sec->output_section will be NULL. */
3719 if (r_type == R_SH_GOTPC
3720 || r_type == R_SH_GOTPC_LOW16
3721 || r_type == R_SH_GOTPC_MEDLOW16
3722 || r_type == R_SH_GOTPC_MEDHI16
3723 || r_type == R_SH_GOTPC_HI16
3724 || ((r_type == R_SH_PLT32
3725 || r_type == R_SH_PLT_LOW16
3726 || r_type == R_SH_PLT_MEDLOW16
3727 || r_type == R_SH_PLT_MEDHI16
3728 || r_type == R_SH_PLT_HI16)
3729 && h->plt.offset != (bfd_vma) -1)
3730 || ((r_type == R_SH_GOT32
3731 || r_type == R_SH_GOT20
3732 || r_type == R_SH_GOTFUNCDESC
3733 || r_type == R_SH_GOTFUNCDESC20
3734 || r_type == R_SH_GOTOFFFUNCDESC
3735 || r_type == R_SH_GOTOFFFUNCDESC20
3736 || r_type == R_SH_FUNCDESC
3737 || r_type == R_SH_GOT_LOW16
3738 || r_type == R_SH_GOT_MEDLOW16
3739 || r_type == R_SH_GOT_MEDHI16
3740 || r_type == R_SH_GOT_HI16)
3741 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3742 bfd_link_pic (info),
3743 h)
3744 && (! bfd_link_pic (info)
3745 || (! info->symbolic && h->dynindx != -1)
3746 || !h->def_regular))
3747 /* The cases above are those in which relocation is
3748 overwritten in the switch block below. The cases
3749 below are those in which we must defer relocation
3750 to run-time, because we can't resolve absolute
3751 addresses when creating a shared library. */
3752 || (bfd_link_pic (info)
3753 && ((! info->symbolic && h->dynindx != -1)
3754 || !h->def_regular)
3755 && ((r_type == R_SH_DIR32
3756 && !h->forced_local)
3757 || (r_type == R_SH_REL32
3758 && !SYMBOL_CALLS_LOCAL (info, h)))
3759 && ((input_section->flags & SEC_ALLOC) != 0
3760 /* DWARF will emit R_SH_DIR32 relocations in its
3761 sections against symbols defined externally
3762 in shared libraries. We can't do anything
3763 with them here. */
3764 || ((input_section->flags & SEC_DEBUGGING) != 0
3765 && h->def_dynamic)))
3766 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3767 sections because such sections are not SEC_ALLOC and
3768 thus ld.so will not process them. */
3769 || (sec->output_section == NULL
3770 && ((input_section->flags & SEC_DEBUGGING) != 0
3771 && h->def_dynamic))
3772 || (sec->output_section == NULL
3773 && (sh_elf_hash_entry (h)->got_type == GOT_TLS_IE
3774 || sh_elf_hash_entry (h)->got_type == GOT_TLS_GD)))
3775 ;
3776 else if (sec->output_section != NULL)
3777 relocation = (h->root.u.def.value
3778 + sec->output_section->vma
3779 + sec->output_offset);
3780 else if (!bfd_link_relocatable (info)
3781 && (_bfd_elf_section_offset (output_bfd, info,
3782 input_section,
3783 rel->r_offset)
3784 != (bfd_vma) -1))
3785 {
3786 _bfd_error_handler
3787 /* xgettext:c-format */
3788 (_("%pB(%pA+%#" PRIx64 "): "
3789 "unresolvable %s relocation against symbol `%s'"),
3790 input_bfd,
3791 input_section,
3792 (uint64_t) rel->r_offset,
3793 howto->name,
3794 h->root.root.string);
3795 return FALSE;
3796 }
3797 }
3798 else if (h->root.type == bfd_link_hash_undefweak)
3799 resolved_to_zero = UNDEFWEAK_NO_DYNAMIC_RELOC (info, h);
3800 else if (info->unresolved_syms_in_objects == RM_IGNORE
3801 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3802 ;
3803 else if (!bfd_link_relocatable (info))
3804 info->callbacks->undefined_symbol
3805 (info, h->root.root.string, input_bfd, input_section,
3806 rel->r_offset,
3807 (info->unresolved_syms_in_objects == RM_DIAGNOSE
3808 && !info->warn_unresolved_syms)
3809 || ELF_ST_VISIBILITY (h->other));
3810 }
3811
3812 if (sec != NULL && discarded_section (sec))
3813 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3814 rel, 1, relend, howto, 0, contents);
3815
3816 if (bfd_link_relocatable (info))
3817 continue;
3818
3819 /* Check for inter-segment relocations in FDPIC files. Most
3820 relocations connect the relocation site to the location of
3821 the target symbol, but there are some exceptions below. */
3822 check_segment[0] = isec_segment;
3823 if (sec != NULL)
3824 check_segment[1] = sh_elf_osec_to_segment (output_bfd,
3825 sec->output_section);
3826 else
3827 check_segment[1] = -1;
3828
3829 switch ((int) r_type)
3830 {
3831 final_link_relocate:
3832 /* COFF relocs don't use the addend. The addend is used for
3833 R_SH_DIR32 to be compatible with other compilers. */
3834 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3835 contents, rel->r_offset,
3836 relocation, addend);
3837 break;
3838
3839 case R_SH_IND12W:
3840 goto final_link_relocate;
3841
3842 case R_SH_DIR8WPN:
3843 case R_SH_DIR8WPZ:
3844 case R_SH_DIR8WPL:
3845 /* If the reloc is against the start of this section, then
3846 the assembler has already taken care of it and the reloc
3847 is here only to assist in relaxing. If the reloc is not
3848 against the start of this section, then it's against an
3849 external symbol and we must deal with it ourselves. */
3850 if (input_section->output_section->vma + input_section->output_offset
3851 != relocation)
3852 {
3853 int disp = (relocation
3854 - input_section->output_section->vma
3855 - input_section->output_offset
3856 - rel->r_offset);
3857 int mask = 0;
3858 switch (r_type)
3859 {
3860 case R_SH_DIR8WPN:
3861 case R_SH_DIR8WPZ: mask = 1; break;
3862 case R_SH_DIR8WPL: mask = 3; break;
3863 default: mask = 0; break;
3864 }
3865 if (disp & mask)
3866 {
3867 _bfd_error_handler
3868 /* xgettext:c-format */
3869 (_("%pB: %#" PRIx64 ": fatal: "
3870 "unaligned branch target for relax-support relocation"),
3871 input_section->owner,
3872 (uint64_t) rel->r_offset);
3873 bfd_set_error (bfd_error_bad_value);
3874 return FALSE;
3875 }
3876 relocation -= 4;
3877 goto final_link_relocate;
3878 }
3879 r = bfd_reloc_ok;
3880 break;
3881
3882 default:
3883 bfd_set_error (bfd_error_bad_value);
3884 return FALSE;
3885
3886 case R_SH_DIR16:
3887 case R_SH_DIR8:
3888 case R_SH_DIR8U:
3889 case R_SH_DIR8S:
3890 case R_SH_DIR4U:
3891 goto final_link_relocate;
3892
3893 case R_SH_DIR8UL:
3894 case R_SH_DIR4UL:
3895 if (relocation & 3)
3896 {
3897 _bfd_error_handler
3898 /* xgettext:c-format */
3899 (_("%pB: %#" PRIx64 ": fatal: "
3900 "unaligned %s relocation %#" PRIx64),
3901 input_section->owner, (uint64_t) rel->r_offset,
3902 howto->name, (uint64_t) relocation);
3903 bfd_set_error (bfd_error_bad_value);
3904 return FALSE;
3905 }
3906 goto final_link_relocate;
3907
3908 case R_SH_DIR8UW:
3909 case R_SH_DIR8SW:
3910 case R_SH_DIR4UW:
3911 if (relocation & 1)
3912 {
3913 _bfd_error_handler
3914 /* xgettext:c-format */
3915 (_("%pB: %#" PRIx64 ": fatal: "
3916 "unaligned %s relocation %#" PRIx64 ""),
3917 input_section->owner,
3918 (uint64_t) rel->r_offset, howto->name,
3919 (uint64_t) relocation);
3920 bfd_set_error (bfd_error_bad_value);
3921 return FALSE;
3922 }
3923 goto final_link_relocate;
3924
3925 case R_SH_PSHA:
3926 if ((signed int)relocation < -32
3927 || (signed int)relocation > 32)
3928 {
3929 _bfd_error_handler
3930 /* xgettext:c-format */
3931 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHA relocation %" PRId64
3932 " not in range -32..32"),
3933 input_section->owner,
3934 (uint64_t) rel->r_offset,
3935 (int64_t) relocation);
3936 bfd_set_error (bfd_error_bad_value);
3937 return FALSE;
3938 }
3939 goto final_link_relocate;
3940
3941 case R_SH_PSHL:
3942 if ((signed int)relocation < -16
3943 || (signed int)relocation > 16)
3944 {
3945 _bfd_error_handler
3946 /* xgettext:c-format */
3947 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHL relocation %" PRId64
3948 " not in range -32..32"),
3949 input_section->owner,
3950 (uint64_t) rel->r_offset,
3951 (int64_t) relocation);
3952 bfd_set_error (bfd_error_bad_value);
3953 return FALSE;
3954 }
3955 goto final_link_relocate;
3956
3957 case R_SH_DIR32:
3958 case R_SH_REL32:
3959 if (bfd_link_pic (info)
3960 && (h == NULL
3961 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3962 && !resolved_to_zero)
3963 || h->root.type != bfd_link_hash_undefweak)
3964 && r_symndx != STN_UNDEF
3965 && (input_section->flags & SEC_ALLOC) != 0
3966 && !is_vxworks_tls
3967 && (r_type == R_SH_DIR32
3968 || !SYMBOL_CALLS_LOCAL (info, h)))
3969 {
3970 Elf_Internal_Rela outrel;
3971 bfd_byte *loc;
3972 bfd_boolean skip, relocate;
3973
3974 /* When generating a shared object, these relocations
3975 are copied into the output file to be resolved at run
3976 time. */
3977
3978 if (sreloc == NULL)
3979 {
3980 sreloc = _bfd_elf_get_dynamic_reloc_section
3981 (input_bfd, input_section, /*rela?*/ TRUE);
3982 if (sreloc == NULL)
3983 return FALSE;
3984 }
3985
3986 skip = FALSE;
3987 relocate = FALSE;
3988
3989 outrel.r_offset =
3990 _bfd_elf_section_offset (output_bfd, info, input_section,
3991 rel->r_offset);
3992 if (outrel.r_offset == (bfd_vma) -1)
3993 skip = TRUE;
3994 else if (outrel.r_offset == (bfd_vma) -2)
3995 skip = TRUE, relocate = TRUE;
3996 outrel.r_offset += (input_section->output_section->vma
3997 + input_section->output_offset);
3998
3999 if (skip)
4000 memset (&outrel, 0, sizeof outrel);
4001 else if (r_type == R_SH_REL32)
4002 {
4003 BFD_ASSERT (h != NULL && h->dynindx != -1);
4004 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
4005 outrel.r_addend
4006 = (howto->partial_inplace
4007 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
4008 : addend);
4009 }
4010 else if (fdpic_p
4011 && (h == NULL
4012 || ((info->symbolic || h->dynindx == -1)
4013 && h->def_regular)))
4014 {
4015 int dynindx;
4016
4017 BFD_ASSERT (sec != NULL);
4018 BFD_ASSERT (sec->output_section != NULL);
4019 dynindx = elf_section_data (sec->output_section)->dynindx;
4020 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
4021 outrel.r_addend = relocation;
4022 outrel.r_addend
4023 += (howto->partial_inplace
4024 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
4025 : addend);
4026 outrel.r_addend -= sec->output_section->vma;
4027 }
4028 else
4029 {
4030 /* h->dynindx may be -1 if this symbol was marked to
4031 become local. */
4032 if (h == NULL
4033 || ((info->symbolic || h->dynindx == -1)
4034 && h->def_regular))
4035 {
4036 relocate = howto->partial_inplace;
4037 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
4038 }
4039 else
4040 {
4041 BFD_ASSERT (h->dynindx != -1);
4042 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
4043 }
4044 outrel.r_addend = relocation;
4045 outrel.r_addend
4046 += (howto->partial_inplace
4047 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
4048 : addend);
4049 }
4050
4051 loc = sreloc->contents;
4052 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4053 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4054
4055 check_segment[0] = check_segment[1] = -1;
4056
4057 /* If this reloc is against an external symbol, we do
4058 not want to fiddle with the addend. Otherwise, we
4059 need to include the symbol value so that it becomes
4060 an addend for the dynamic reloc. */
4061 if (! relocate)
4062 continue;
4063 }
4064 else if (fdpic_p && !bfd_link_pic (info)
4065 && r_type == R_SH_DIR32
4066 && (input_section->flags & SEC_ALLOC) != 0)
4067 {
4068 bfd_vma offset;
4069
4070 BFD_ASSERT (htab);
4071
4072 if (sh_elf_osec_readonly_p (output_bfd,
4073 input_section->output_section))
4074 {
4075 _bfd_error_handler
4076 /* xgettext:c-format */
4077 (_("%pB(%pA+%#" PRIx64 "): "
4078 "cannot emit fixup to `%s' in read-only section"),
4079 input_bfd,
4080 input_section,
4081 (uint64_t) rel->r_offset,
4082 symname);
4083 return FALSE;
4084 }
4085
4086 offset = _bfd_elf_section_offset (output_bfd, info,
4087 input_section, rel->r_offset);
4088 if (offset != (bfd_vma)-1)
4089 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4090 input_section->output_section->vma
4091 + input_section->output_offset
4092 + rel->r_offset);
4093
4094 check_segment[0] = check_segment[1] = -1;
4095 }
4096 /* We don't want warnings for non-NULL tests on undefined weak
4097 symbols. */
4098 else if (r_type == R_SH_REL32
4099 && h
4100 && h->root.type == bfd_link_hash_undefweak)
4101 check_segment[0] = check_segment[1] = -1;
4102 goto final_link_relocate;
4103
4104 case R_SH_GOTPLT32:
4105 /* Relocation is to the entry for this symbol in the
4106 procedure linkage table. */
4107
4108 if (h == NULL
4109 || h->forced_local
4110 || ! bfd_link_pic (info)
4111 || info->symbolic
4112 || h->dynindx == -1
4113 || h->plt.offset == (bfd_vma) -1
4114 || h->got.offset != (bfd_vma) -1)
4115 goto force_got;
4116
4117 /* Relocation is to the entry for this symbol in the global
4118 offset table extension for the procedure linkage table. */
4119
4120 BFD_ASSERT (htab);
4121 BFD_ASSERT (sgotplt != NULL);
4122 relocation = (sgotplt->output_offset
4123 + (get_plt_index (htab->plt_info, h->plt.offset)
4124 + 3) * 4);
4125
4126 #ifdef GOT_BIAS
4127 relocation -= GOT_BIAS;
4128 #endif
4129
4130 goto final_link_relocate;
4131
4132 force_got:
4133 case R_SH_GOT32:
4134 case R_SH_GOT20:
4135 /* Relocation is to the entry for this symbol in the global
4136 offset table. */
4137
4138 BFD_ASSERT (htab);
4139 BFD_ASSERT (sgot != NULL);
4140 check_segment[0] = check_segment[1] = -1;
4141
4142 if (h != NULL)
4143 {
4144 bfd_boolean dyn;
4145
4146 off = h->got.offset;
4147 BFD_ASSERT (off != (bfd_vma) -1);
4148
4149 dyn = htab->root.dynamic_sections_created;
4150 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4151 bfd_link_pic (info),
4152 h)
4153 || (bfd_link_pic (info)
4154 && SYMBOL_REFERENCES_LOCAL (info, h))
4155 || ((ELF_ST_VISIBILITY (h->other)
4156 || resolved_to_zero)
4157 && h->root.type == bfd_link_hash_undefweak))
4158 {
4159 /* This is actually a static link, or it is a
4160 -Bsymbolic link and the symbol is defined
4161 locally, or the symbol was forced to be local
4162 because of a version file. We must initialize
4163 this entry in the global offset table. Since the
4164 offset must always be a multiple of 4, we use the
4165 least significant bit to record whether we have
4166 initialized it already.
4167
4168 When doing a dynamic link, we create a .rela.got
4169 relocation entry to initialize the value. This
4170 is done in the finish_dynamic_symbol routine. */
4171 if ((off & 1) != 0)
4172 off &= ~1;
4173 else
4174 {
4175 bfd_put_32 (output_bfd, relocation,
4176 sgot->contents + off);
4177 h->got.offset |= 1;
4178
4179 /* If we initialize the GOT entry here with a valid
4180 symbol address, also add a fixup. */
4181 if (fdpic_p && !bfd_link_pic (info)
4182 && sh_elf_hash_entry (h)->got_type == GOT_NORMAL
4183 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4184 || h->root.type != bfd_link_hash_undefweak))
4185 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4186 sgot->output_section->vma
4187 + sgot->output_offset
4188 + off);
4189 }
4190 }
4191
4192 relocation = sh_elf_got_offset (htab) + off;
4193 }
4194 else
4195 {
4196 BFD_ASSERT (local_got_offsets != NULL
4197 && local_got_offsets[r_symndx] != (bfd_vma) -1);
4198
4199 off = local_got_offsets[r_symndx];
4200
4201 /* The offset must always be a multiple of 4. We use
4202 the least significant bit to record whether we have
4203 already generated the necessary reloc. */
4204 if ((off & 1) != 0)
4205 off &= ~1;
4206 else
4207 {
4208 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4209
4210 if (bfd_link_pic (info))
4211 {
4212 Elf_Internal_Rela outrel;
4213 bfd_byte *loc;
4214
4215 outrel.r_offset = (sgot->output_section->vma
4216 + sgot->output_offset
4217 + off);
4218 if (fdpic_p)
4219 {
4220 int dynindx
4221 = elf_section_data (sec->output_section)->dynindx;
4222 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
4223 outrel.r_addend = relocation;
4224 outrel.r_addend -= sec->output_section->vma;
4225 }
4226 else
4227 {
4228 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
4229 outrel.r_addend = relocation;
4230 }
4231 loc = srelgot->contents;
4232 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4233 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4234 }
4235 else if (fdpic_p
4236 && (sh_elf_local_got_type (input_bfd) [r_symndx]
4237 == GOT_NORMAL))
4238 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4239 sgot->output_section->vma
4240 + sgot->output_offset
4241 + off);
4242
4243 local_got_offsets[r_symndx] |= 1;
4244 }
4245
4246 relocation = sh_elf_got_offset (htab) + off;
4247 }
4248
4249 #ifdef GOT_BIAS
4250 relocation -= GOT_BIAS;
4251 #endif
4252
4253 if (r_type == R_SH_GOT20)
4254 {
4255 r = install_movi20_field (output_bfd, relocation + addend,
4256 input_bfd, input_section, contents,
4257 rel->r_offset);
4258 break;
4259 }
4260 else
4261 goto final_link_relocate;
4262
4263 case R_SH_GOTOFF:
4264 case R_SH_GOTOFF20:
4265 /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
4266 we place at the start of the .got.plt section. This is the same
4267 as the start of the output .got section, unless there are function
4268 descriptors in front of it. */
4269 BFD_ASSERT (htab);
4270 BFD_ASSERT (sgotplt != NULL);
4271 check_segment[0] = got_segment;
4272 relocation -= sgotplt->output_section->vma + sgotplt->output_offset
4273 + htab->root.hgot->root.u.def.value;
4274
4275 #ifdef GOT_BIAS
4276 relocation -= GOT_BIAS;
4277 #endif
4278
4279 addend = rel->r_addend;
4280
4281 if (r_type == R_SH_GOTOFF20)
4282 {
4283 r = install_movi20_field (output_bfd, relocation + addend,
4284 input_bfd, input_section, contents,
4285 rel->r_offset);
4286 break;
4287 }
4288 else
4289 goto final_link_relocate;
4290
4291 case R_SH_GOTPC:
4292 /* Use global offset table as symbol value. */
4293
4294 BFD_ASSERT (sgotplt != NULL);
4295 relocation = sgotplt->output_section->vma + sgotplt->output_offset;
4296
4297 #ifdef GOT_BIAS
4298 relocation += GOT_BIAS;
4299 #endif
4300
4301 addend = rel->r_addend;
4302
4303 goto final_link_relocate;
4304
4305 case R_SH_PLT32:
4306 /* Relocation is to the entry for this symbol in the
4307 procedure linkage table. */
4308
4309 /* Resolve a PLT reloc against a local symbol directly,
4310 without using the procedure linkage table. */
4311 if (h == NULL)
4312 goto final_link_relocate;
4313
4314 /* We don't want to warn on calls to undefined weak symbols,
4315 as calls to them must be protected by non-NULL tests
4316 anyway, and unprotected calls would invoke undefined
4317 behavior. */
4318 if (h->root.type == bfd_link_hash_undefweak)
4319 check_segment[0] = check_segment[1] = -1;
4320
4321 if (h->forced_local)
4322 goto final_link_relocate;
4323
4324 if (h->plt.offset == (bfd_vma) -1)
4325 {
4326 /* We didn't make a PLT entry for this symbol. This
4327 happens when statically linking PIC code, or when
4328 using -Bsymbolic. */
4329 goto final_link_relocate;
4330 }
4331
4332 BFD_ASSERT (splt != NULL);
4333 check_segment[1] = plt_segment;
4334 relocation = (splt->output_section->vma
4335 + splt->output_offset
4336 + h->plt.offset);
4337
4338 addend = rel->r_addend;
4339
4340 goto final_link_relocate;
4341
4342 /* Relocation is to the canonical function descriptor for this
4343 symbol, possibly via the GOT. Initialize the GOT
4344 entry and function descriptor if necessary. */
4345 case R_SH_GOTFUNCDESC:
4346 case R_SH_GOTFUNCDESC20:
4347 case R_SH_FUNCDESC:
4348 {
4349 int dynindx = -1;
4350 asection *reloc_section;
4351 bfd_vma reloc_offset;
4352 int reloc_type = R_SH_FUNCDESC;
4353
4354 BFD_ASSERT (htab);
4355
4356 check_segment[0] = check_segment[1] = -1;
4357
4358 /* FIXME: See what FRV does for global symbols in the
4359 executable, with --export-dynamic. Do they need ld.so
4360 to allocate official descriptors? See what this code
4361 does. */
4362
4363 relocation = 0;
4364 addend = 0;
4365
4366 if (r_type == R_SH_FUNCDESC)
4367 {
4368 reloc_section = input_section;
4369 reloc_offset = rel->r_offset;
4370 }
4371 else
4372 {
4373 reloc_section = sgot;
4374
4375 if (h != NULL)
4376 reloc_offset = h->got.offset;
4377 else
4378 {
4379 BFD_ASSERT (local_got_offsets != NULL);
4380 reloc_offset = local_got_offsets[r_symndx];
4381 }
4382 BFD_ASSERT (reloc_offset != MINUS_ONE);
4383
4384 if (reloc_offset & 1)
4385 {
4386 reloc_offset &= ~1;
4387 goto funcdesc_done_got;
4388 }
4389 }
4390
4391 if (h && h->root.type == bfd_link_hash_undefweak
4392 && (SYMBOL_CALLS_LOCAL (info, h)
4393 || !htab->root.dynamic_sections_created))
4394 /* Undefined weak symbol which will not be dynamically
4395 resolved later; leave it at zero. */
4396 goto funcdesc_leave_zero;
4397 else if (SYMBOL_CALLS_LOCAL (info, h)
4398 && ! SYMBOL_FUNCDESC_LOCAL (info, h))
4399 {
4400 /* If the symbol needs a non-local function descriptor
4401 but binds locally (i.e., its visibility is
4402 protected), emit a dynamic relocation decayed to
4403 section+offset. This is an optimization; the dynamic
4404 linker would resolve our function descriptor request
4405 to our copy of the function anyway. */
4406 dynindx = elf_section_data (h->root.u.def.section
4407 ->output_section)->dynindx;
4408 relocation += h->root.u.def.section->output_offset
4409 + h->root.u.def.value;
4410 }
4411 else if (! SYMBOL_FUNCDESC_LOCAL (info, h))
4412 {
4413 /* If the symbol is dynamic and there will be dynamic
4414 symbol resolution because we are or are linked with a
4415 shared library, emit a FUNCDESC relocation such that
4416 the dynamic linker will allocate the function
4417 descriptor. */
4418 BFD_ASSERT (h->dynindx != -1);
4419 dynindx = h->dynindx;
4420 }
4421 else
4422 {
4423 bfd_vma offset;
4424
4425 /* Otherwise, we know we have a private function
4426 descriptor, so reference it directly. */
4427 reloc_type = R_SH_DIR32;
4428 dynindx = elf_section_data (htab->sfuncdesc
4429 ->output_section)->dynindx;
4430
4431 if (h)
4432 {
4433 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4434 BFD_ASSERT (offset != MINUS_ONE);
4435 if ((offset & 1) == 0)
4436 {
4437 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4438 offset, NULL, 0))
4439 return FALSE;
4440 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4441 }
4442 }
4443 else
4444 {
4445 union gotref *local_funcdesc;
4446
4447 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4448 offset = local_funcdesc[r_symndx].offset;
4449 BFD_ASSERT (offset != MINUS_ONE);
4450 if ((offset & 1) == 0)
4451 {
4452 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4453 offset, sec,
4454 sym->st_value))
4455 return FALSE;
4456 local_funcdesc[r_symndx].offset |= 1;
4457 }
4458 }
4459
4460 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4461 }
4462
4463 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
4464 {
4465 bfd_vma offset;
4466
4467 if (sh_elf_osec_readonly_p (output_bfd,
4468 reloc_section->output_section))
4469 {
4470 _bfd_error_handler
4471 /* xgettext:c-format */
4472 (_("%pB(%pA+%#" PRIx64 "): "
4473 "cannot emit fixup to `%s' in read-only section"),
4474 input_bfd,
4475 input_section,
4476 (uint64_t) rel->r_offset,
4477 symname);
4478 return FALSE;
4479 }
4480
4481 offset = _bfd_elf_section_offset (output_bfd, info,
4482 reloc_section, reloc_offset);
4483
4484 if (offset != (bfd_vma)-1)
4485 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4486 offset
4487 + reloc_section->output_section->vma
4488 + reloc_section->output_offset);
4489 }
4490 else if ((reloc_section->output_section->flags
4491 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
4492 {
4493 bfd_vma offset;
4494
4495 if (sh_elf_osec_readonly_p (output_bfd,
4496 reloc_section->output_section))
4497 {
4498 info->callbacks->warning
4499 (info,
4500 _("cannot emit dynamic relocations in read-only section"),
4501 symname, input_bfd, reloc_section, reloc_offset);
4502 return FALSE;
4503 }
4504
4505 offset = _bfd_elf_section_offset (output_bfd, info,
4506 reloc_section, reloc_offset);
4507
4508 if (offset != (bfd_vma)-1)
4509 sh_elf_add_dyn_reloc (output_bfd, srelgot,
4510 offset
4511 + reloc_section->output_section->vma
4512 + reloc_section->output_offset,
4513 reloc_type, dynindx, relocation);
4514
4515 if (r_type == R_SH_FUNCDESC)
4516 {
4517 r = bfd_reloc_ok;
4518 break;
4519 }
4520 else
4521 {
4522 relocation = 0;
4523 goto funcdesc_leave_zero;
4524 }
4525 }
4526
4527 if (SYMBOL_FUNCDESC_LOCAL (info, h))
4528 relocation += htab->sfuncdesc->output_section->vma;
4529 funcdesc_leave_zero:
4530 if (r_type != R_SH_FUNCDESC)
4531 {
4532 bfd_put_32 (output_bfd, relocation,
4533 reloc_section->contents + reloc_offset);
4534 if (h != NULL)
4535 h->got.offset |= 1;
4536 else
4537 local_got_offsets[r_symndx] |= 1;
4538
4539 funcdesc_done_got:
4540
4541 relocation = sh_elf_got_offset (htab) + reloc_offset;
4542 #ifdef GOT_BIAS
4543 relocation -= GOT_BIAS;
4544 #endif
4545 }
4546 if (r_type == R_SH_GOTFUNCDESC20)
4547 {
4548 r = install_movi20_field (output_bfd, relocation + addend,
4549 input_bfd, input_section, contents,
4550 rel->r_offset);
4551 break;
4552 }
4553 else
4554 goto final_link_relocate;
4555 }
4556 break;
4557
4558 case R_SH_GOTOFFFUNCDESC:
4559 case R_SH_GOTOFFFUNCDESC20:
4560 /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
4561 executable and --export-dynamic. If such symbols get
4562 ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
4563 for them. */
4564 BFD_ASSERT (htab);
4565
4566 check_segment[0] = check_segment[1] = -1;
4567 relocation = 0;
4568 addend = rel->r_addend;
4569
4570 if (h && (h->root.type == bfd_link_hash_undefweak
4571 || !SYMBOL_FUNCDESC_LOCAL (info, h)))
4572 {
4573 _bfd_error_handler
4574 /* xgettext:c-format */
4575 (_("%pB(%pA+%#" PRIx64 "): "
4576 "%s relocation against external symbol \"%s\""),
4577 input_bfd, input_section, (uint64_t) rel->r_offset,
4578 howto->name, h->root.root.string);
4579 return FALSE;
4580 }
4581 else
4582 {
4583 bfd_vma offset;
4584
4585 /* Otherwise, we know we have a private function
4586 descriptor, so reference it directly. */
4587 if (h)
4588 {
4589 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4590 BFD_ASSERT (offset != MINUS_ONE);
4591 if ((offset & 1) == 0)
4592 {
4593 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4594 offset, NULL, 0))
4595 return FALSE;
4596 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4597 }
4598 }
4599 else
4600 {
4601 union gotref *local_funcdesc;
4602
4603 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4604 offset = local_funcdesc[r_symndx].offset;
4605 BFD_ASSERT (offset != MINUS_ONE);
4606 if ((offset & 1) == 0)
4607 {
4608 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4609 offset, sec,
4610 sym->st_value))
4611 return FALSE;
4612 local_funcdesc[r_symndx].offset |= 1;
4613 }
4614 }
4615
4616 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4617 }
4618
4619 relocation -= (htab->root.hgot->root.u.def.value
4620 + sgotplt->output_offset);
4621 #ifdef GOT_BIAS
4622 relocation -= GOT_BIAS;
4623 #endif
4624
4625 if (r_type == R_SH_GOTOFFFUNCDESC20)
4626 {
4627 r = install_movi20_field (output_bfd, relocation + addend,
4628 input_bfd, input_section, contents,
4629 rel->r_offset);
4630 break;
4631 }
4632 else
4633 goto final_link_relocate;
4634
4635 case R_SH_LOOP_START:
4636 {
4637 static bfd_vma start, end;
4638
4639 start = (relocation + rel->r_addend
4640 - (sec->output_section->vma + sec->output_offset));
4641 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4642 rel->r_offset, sec, start, end);
4643 break;
4644
4645 case R_SH_LOOP_END:
4646 end = (relocation + rel->r_addend
4647 - (sec->output_section->vma + sec->output_offset));
4648 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4649 rel->r_offset, sec, start, end);
4650 break;
4651 }
4652
4653 case R_SH_TLS_GD_32:
4654 case R_SH_TLS_IE_32:
4655 BFD_ASSERT (htab);
4656 check_segment[0] = check_segment[1] = -1;
4657 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4658 got_type = GOT_UNKNOWN;
4659 if (h == NULL && local_got_offsets)
4660 got_type = sh_elf_local_got_type (input_bfd) [r_symndx];
4661 else if (h != NULL)
4662 {
4663 got_type = sh_elf_hash_entry (h)->got_type;
4664 if (! bfd_link_pic (info)
4665 && (h->dynindx == -1
4666 || h->def_regular))
4667 r_type = R_SH_TLS_LE_32;
4668 }
4669
4670 if (r_type == R_SH_TLS_GD_32 && got_type == GOT_TLS_IE)
4671 r_type = R_SH_TLS_IE_32;
4672
4673 if (r_type == R_SH_TLS_LE_32)
4674 {
4675 bfd_vma offset;
4676 unsigned short insn;
4677
4678 if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4679 {
4680 /* GD->LE transition:
4681 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4682 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4683 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4684 We change it into:
4685 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4686 nop; nop; ...
4687 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4688
4689 offset = rel->r_offset;
4690 if (offset < 16)
4691 {
4692 _bfd_error_handler
4693 /* xgettext:c-format */
4694 (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64),
4695 input_bfd, input_section, (uint64_t) offset);
4696 return FALSE;
4697 }
4698
4699 /* Size of GD instructions is 16 or 18. */
4700 offset -= 16;
4701 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4702 if ((insn & 0xff00) == 0xc700)
4703 {
4704 BFD_ASSERT (offset >= 2);
4705 offset -= 2;
4706 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4707 }
4708
4709 if ((insn & 0xff00) != 0xd400)
4710 _bfd_error_handler
4711 /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */
4712 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd4?\?)"),
4713 input_bfd, input_section, (uint64_t) offset, (int) insn);
4714
4715 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4716
4717 if ((insn & 0xff00) != 0xc700)
4718 _bfd_error_handler
4719 /* xgettext:c-format */
4720 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xc7?\?)"),
4721 input_bfd, input_section, (uint64_t) offset, (int) insn);
4722
4723 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4724 if ((insn & 0xff00) != 0xd100)
4725 _bfd_error_handler
4726 /* xgettext:c-format */
4727 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd1?\?)"),
4728 input_bfd, input_section, (uint64_t) offset, (int) insn);
4729
4730 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4731 if (insn != 0x310c)
4732 _bfd_error_handler
4733 /* xgettext:c-format */
4734 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x310c)"),
4735 input_bfd, input_section, (uint64_t) offset, (int) insn);
4736
4737 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4738 if (insn != 0x410b)
4739 _bfd_error_handler
4740 /* xgettext:c-format */
4741 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x410b)"),
4742 input_bfd, input_section, (uint64_t) offset, (int) insn);
4743
4744 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4745 if (insn != 0x34cc)
4746 _bfd_error_handler
4747 /* xgettext:c-format */
4748 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x34cc)"),
4749 input_bfd, input_section, (uint64_t) offset, (int) insn);
4750
4751 bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4752 bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4753 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4754 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4755 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4756 }
4757 else
4758 {
4759 int target;
4760
4761 /* IE->LE transition:
4762 mov.l 1f,r0;
4763 stc gbr,rN;
4764 mov.l @(r0,r12),rM;
4765 bra 2f;
4766 add ...;
4767 .align 2;
4768 1: x@GOTTPOFF;
4769 2:
4770 We change it into:
4771 mov.l .Ln,rM;
4772 stc gbr,rN;
4773 nop;
4774 ...;
4775 1: x@TPOFF;
4776 2:. */
4777
4778 offset = rel->r_offset;
4779 if (offset < 16)
4780 {
4781 _bfd_error_handler
4782 /* xgettext:c-format */
4783 (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64),
4784 input_bfd, input_section, (uint64_t) offset);
4785 return FALSE;
4786 }
4787
4788 /* Size of IE instructions is 10 or 12. */
4789 offset -= 10;
4790 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4791 if ((insn & 0xf0ff) == 0x0012)
4792 {
4793 BFD_ASSERT (offset >= 2);
4794 offset -= 2;
4795 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4796 }
4797
4798 if ((insn & 0xff00) != 0xd000)
4799 _bfd_error_handler
4800 /* xgettext:c-format */
4801 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd0??: mov.l)"),
4802 input_bfd, input_section, (uint64_t) offset, (int) insn);
4803
4804 target = insn & 0x00ff;
4805
4806 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4807 if ((insn & 0xf0ff) != 0x0012)
4808 _bfd_error_handler
4809 /* xgettext:c-format */
4810 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?12: stc)"),
4811 input_bfd, input_section, (uint64_t) (offset + 2), (int) insn);
4812
4813 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4814 if ((insn & 0xf0ff) != 0x00ce)
4815 _bfd_error_handler
4816 /* xgettext:c-format */
4817 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?ce: mov.l)"),
4818 input_bfd, input_section, (uint64_t) (offset + 4), (int) insn);
4819
4820 insn = 0xd000 | (insn & 0x0f00) | target;
4821 bfd_put_16 (output_bfd, insn, contents + offset + 0);
4822 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4823 }
4824
4825 bfd_put_32 (output_bfd, tpoff (info, relocation),
4826 contents + rel->r_offset);
4827 continue;
4828 }
4829
4830 if (sgot == NULL || sgotplt == NULL)
4831 abort ();
4832
4833 if (h != NULL)
4834 off = h->got.offset;
4835 else
4836 {
4837 if (local_got_offsets == NULL)
4838 abort ();
4839
4840 off = local_got_offsets[r_symndx];
4841 }
4842
4843 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4844 if (r_type == R_SH_TLS_IE_32
4845 && ! htab->root.dynamic_sections_created)
4846 {
4847 off &= ~1;
4848 bfd_put_32 (output_bfd, tpoff (info, relocation),
4849 sgot->contents + off);
4850 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4851 contents + rel->r_offset);
4852 continue;
4853 }
4854
4855 if ((off & 1) != 0)
4856 off &= ~1;
4857 else
4858 {
4859 Elf_Internal_Rela outrel;
4860 bfd_byte *loc;
4861 int dr_type, indx;
4862
4863 outrel.r_offset = (sgot->output_section->vma
4864 + sgot->output_offset + off);
4865
4866 if (h == NULL || h->dynindx == -1)
4867 indx = 0;
4868 else
4869 indx = h->dynindx;
4870
4871 dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4872 R_SH_TLS_TPOFF32);
4873 if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4874 outrel.r_addend = relocation - dtpoff_base (info);
4875 else
4876 outrel.r_addend = 0;
4877 outrel.r_info = ELF32_R_INFO (indx, dr_type);
4878 loc = srelgot->contents;
4879 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4880 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4881
4882 if (r_type == R_SH_TLS_GD_32)
4883 {
4884 if (indx == 0)
4885 {
4886 bfd_put_32 (output_bfd,
4887 relocation - dtpoff_base (info),
4888 sgot->contents + off + 4);
4889 }
4890 else
4891 {
4892 outrel.r_info = ELF32_R_INFO (indx,
4893 R_SH_TLS_DTPOFF32);
4894 outrel.r_offset += 4;
4895 outrel.r_addend = 0;
4896 srelgot->reloc_count++;
4897 loc += sizeof (Elf32_External_Rela);
4898 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4899 }
4900 }
4901
4902 if (h != NULL)
4903 h->got.offset |= 1;
4904 else
4905 local_got_offsets[r_symndx] |= 1;
4906 }
4907
4908 if (off >= (bfd_vma) -2)
4909 abort ();
4910
4911 if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4912 relocation = sh_elf_got_offset (htab) + off;
4913 else
4914 {
4915 bfd_vma offset;
4916 unsigned short insn;
4917
4918 /* GD->IE transition:
4919 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4920 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4921 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4922 We change it into:
4923 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4924 nop; nop; bra 3f; nop; .align 2;
4925 1: .long x@TPOFF; 2:...; 3:. */
4926
4927 offset = rel->r_offset;
4928 if (offset < 16)
4929 {
4930 _bfd_error_handler
4931 /* xgettext:c-format */
4932 (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64),
4933 input_bfd, input_section, (uint64_t) offset);
4934 return FALSE;
4935 }
4936
4937 /* Size of GD instructions is 16 or 18. */
4938 offset -= 16;
4939 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4940 if ((insn & 0xff00) == 0xc700)
4941 {
4942 BFD_ASSERT (offset >= 2);
4943 offset -= 2;
4944 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4945 }
4946
4947 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4948
4949 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4950 bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4951
4952 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4953 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4954 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4955 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4956 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4957 BFD_ASSERT (insn == 0x310c);
4958 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4959 BFD_ASSERT (insn == 0x410b);
4960 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4961 BFD_ASSERT (insn == 0x34cc);
4962
4963 bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4964 bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4965 bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4966 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4967 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4968
4969 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4970 contents + rel->r_offset);
4971
4972 continue;
4973 }
4974
4975 addend = rel->r_addend;
4976
4977 goto final_link_relocate;
4978
4979 case R_SH_TLS_LD_32:
4980 BFD_ASSERT (htab);
4981 check_segment[0] = check_segment[1] = -1;
4982 if (! bfd_link_pic (info))
4983 {
4984 bfd_vma offset;
4985 unsigned short insn;
4986
4987 /* LD->LE transition:
4988 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4989 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4990 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4991 We change it into:
4992 stc gbr,r0; nop; nop; nop;
4993 nop; nop; bra 3f; ...; 3:. */
4994
4995 offset = rel->r_offset;
4996 if (offset < 16)
4997 {
4998 _bfd_error_handler
4999 /* xgettext:c-format */
5000 (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64),
5001 input_bfd, input_section, (uint64_t) offset);
5002 return FALSE;
5003 }
5004
5005 /* Size of LD instructions is 16 or 18. */
5006 offset -= 16;
5007 insn = bfd_get_16 (input_bfd, contents + offset + 0);
5008 if ((insn & 0xff00) == 0xc700)
5009 {
5010 BFD_ASSERT (offset >= 2);
5011 offset -= 2;
5012 insn = bfd_get_16 (input_bfd, contents + offset + 0);
5013 }
5014
5015 BFD_ASSERT ((insn & 0xff00) == 0xd400);
5016 insn = bfd_get_16 (input_bfd, contents + offset + 2);
5017 BFD_ASSERT ((insn & 0xff00) == 0xc700);
5018 insn = bfd_get_16 (input_bfd, contents + offset + 4);
5019 BFD_ASSERT ((insn & 0xff00) == 0xd100);
5020 insn = bfd_get_16 (input_bfd, contents + offset + 6);
5021 BFD_ASSERT (insn == 0x310c);
5022 insn = bfd_get_16 (input_bfd, contents + offset + 8);
5023 BFD_ASSERT (insn == 0x410b);
5024 insn = bfd_get_16 (input_bfd, contents + offset + 10);
5025 BFD_ASSERT (insn == 0x34cc);
5026
5027 bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
5028 bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
5029 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
5030 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
5031 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
5032 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
5033
5034 continue;
5035 }
5036
5037 if (sgot == NULL || sgotplt == NULL)
5038 abort ();
5039
5040 off = htab->tls_ldm_got.offset;
5041 if (off & 1)
5042 off &= ~1;
5043 else
5044 {
5045 Elf_Internal_Rela outrel;
5046 bfd_byte *loc;
5047
5048 outrel.r_offset = (sgot->output_section->vma
5049 + sgot->output_offset + off);
5050 outrel.r_addend = 0;
5051 outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
5052 loc = srelgot->contents;
5053 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
5054 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5055 htab->tls_ldm_got.offset |= 1;
5056 }
5057
5058 relocation = sh_elf_got_offset (htab) + off;
5059 addend = rel->r_addend;
5060
5061 goto final_link_relocate;
5062
5063 case R_SH_TLS_LDO_32:
5064 check_segment[0] = check_segment[1] = -1;
5065 if (! bfd_link_pic (info))
5066 relocation = tpoff (info, relocation);
5067 else
5068 relocation -= dtpoff_base (info);
5069
5070 addend = rel->r_addend;
5071 goto final_link_relocate;
5072
5073 case R_SH_TLS_LE_32:
5074 {
5075 int indx;
5076 Elf_Internal_Rela outrel;
5077 bfd_byte *loc;
5078
5079 check_segment[0] = check_segment[1] = -1;
5080
5081 if (!bfd_link_dll (info))
5082 {
5083 relocation = tpoff (info, relocation);
5084 addend = rel->r_addend;
5085 goto final_link_relocate;
5086 }
5087
5088 if (sreloc == NULL)
5089 {
5090 sreloc = _bfd_elf_get_dynamic_reloc_section
5091 (input_bfd, input_section, /*rela?*/ TRUE);
5092 if (sreloc == NULL)
5093 return FALSE;
5094 }
5095
5096 if (h == NULL || h->dynindx == -1)
5097 indx = 0;
5098 else
5099 indx = h->dynindx;
5100
5101 outrel.r_offset = (input_section->output_section->vma
5102 + input_section->output_offset
5103 + rel->r_offset);
5104 outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
5105 if (indx == 0)
5106 outrel.r_addend = relocation - dtpoff_base (info);
5107 else
5108 outrel.r_addend = 0;
5109
5110 loc = sreloc->contents;
5111 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
5112 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5113 continue;
5114 }
5115 }
5116
5117 relocation_done:
5118 if (fdpic_p && check_segment[0] != (unsigned) -1
5119 && check_segment[0] != check_segment[1])
5120 {
5121 /* We don't want duplicate errors for undefined symbols. */
5122 if (!h || h->root.type != bfd_link_hash_undefined)
5123 {
5124 if (bfd_link_pic (info))
5125 {
5126 info->callbacks->einfo
5127 /* xgettext:c-format */
5128 (_("%X%C: relocation to \"%s\" references a different segment\n"),
5129 input_bfd, input_section, rel->r_offset, symname);
5130 return FALSE;
5131 }
5132 else
5133 info->callbacks->einfo
5134 /* xgettext:c-format */
5135 (_("%C: warning: relocation to \"%s\" references a different segment\n"),
5136 input_bfd, input_section, rel->r_offset, symname);
5137 }
5138
5139 elf_elfheader (output_bfd)->e_flags |= EF_SH_PIC;
5140 }
5141
5142 if (r != bfd_reloc_ok)
5143 {
5144 switch (r)
5145 {
5146 default:
5147 case bfd_reloc_outofrange:
5148 abort ();
5149 case bfd_reloc_overflow:
5150 {
5151 const char *name;
5152
5153 if (h != NULL)
5154 name = NULL;
5155 else
5156 {
5157 name = (bfd_elf_string_from_elf_section
5158 (input_bfd, symtab_hdr->sh_link, sym->st_name));
5159 if (name == NULL)
5160 return FALSE;
5161 if (*name == '\0')
5162 name = bfd_section_name (sec);
5163 }
5164 (*info->callbacks->reloc_overflow)
5165 (info, (h ? &h->root : NULL), name, howto->name,
5166 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
5167 }
5168 break;
5169 }
5170 }
5171 }
5172
5173 return TRUE;
5174 }
5175
5176 /* This is a version of bfd_generic_get_relocated_section_contents
5177 which uses sh_elf_relocate_section. */
5178
5179 static bfd_byte *
5180 sh_elf_get_relocated_section_contents (bfd *output_bfd,
5181 struct bfd_link_info *link_info,
5182 struct bfd_link_order *link_order,
5183 bfd_byte *data,
5184 bfd_boolean relocatable,
5185 asymbol **symbols)
5186 {
5187 Elf_Internal_Shdr *symtab_hdr;
5188 asection *input_section = link_order->u.indirect.section;
5189 bfd *input_bfd = input_section->owner;
5190 asection **sections = NULL;
5191 Elf_Internal_Rela *internal_relocs = NULL;
5192 Elf_Internal_Sym *isymbuf = NULL;
5193
5194 /* We only need to handle the case of relaxing, or of having a
5195 particular set of section contents, specially. */
5196 if (relocatable
5197 || elf_section_data (input_section)->this_hdr.contents == NULL)
5198 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
5199 link_order, data,
5200 relocatable,
5201 symbols);
5202
5203 symtab_hdr = &elf_symtab_hdr (input_bfd);
5204
5205 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
5206 (size_t) input_section->size);
5207
5208 if ((input_section->flags & SEC_RELOC) != 0
5209 && input_section->reloc_count > 0)
5210 {
5211 asection **secpp;
5212 Elf_Internal_Sym *isym, *isymend;
5213 bfd_size_type amt;
5214
5215 internal_relocs = (_bfd_elf_link_read_relocs
5216 (input_bfd, input_section, NULL,
5217 (Elf_Internal_Rela *) NULL, FALSE));
5218 if (internal_relocs == NULL)
5219 goto error_return;
5220
5221 if (symtab_hdr->sh_info != 0)
5222 {
5223 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5224 if (isymbuf == NULL)
5225 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
5226 symtab_hdr->sh_info, 0,
5227 NULL, NULL, NULL);
5228 if (isymbuf == NULL)
5229 goto error_return;
5230 }
5231
5232 amt = symtab_hdr->sh_info;
5233 amt *= sizeof (asection *);
5234 sections = (asection **) bfd_malloc (amt);
5235 if (sections == NULL && amt != 0)
5236 goto error_return;
5237
5238 isymend = isymbuf + symtab_hdr->sh_info;
5239 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
5240 {
5241 asection *isec;
5242
5243 if (isym->st_shndx == SHN_UNDEF)
5244 isec = bfd_und_section_ptr;
5245 else if (isym->st_shndx == SHN_ABS)
5246 isec = bfd_abs_section_ptr;
5247 else if (isym->st_shndx == SHN_COMMON)
5248 isec = bfd_com_section_ptr;
5249 else
5250 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
5251
5252 *secpp = isec;
5253 }
5254
5255 if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
5256 input_section, data, internal_relocs,
5257 isymbuf, sections))
5258 goto error_return;
5259
5260 if (sections != NULL)
5261 free (sections);
5262 if (isymbuf != NULL
5263 && symtab_hdr->contents != (unsigned char *) isymbuf)
5264 free (isymbuf);
5265 if (elf_section_data (input_section)->relocs != internal_relocs)
5266 free (internal_relocs);
5267 }
5268
5269 return data;
5270
5271 error_return:
5272 if (sections != NULL)
5273 free (sections);
5274 if (isymbuf != NULL
5275 && symtab_hdr->contents != (unsigned char *) isymbuf)
5276 free (isymbuf);
5277 if (internal_relocs != NULL
5278 && elf_section_data (input_section)->relocs != internal_relocs)
5279 free (internal_relocs);
5280 return NULL;
5281 }
5282
5283 /* Return the base VMA address which should be subtracted from real addresses
5284 when resolving @dtpoff relocation.
5285 This is PT_TLS segment p_vaddr. */
5286
5287 static bfd_vma
5288 dtpoff_base (struct bfd_link_info *info)
5289 {
5290 /* If tls_sec is NULL, we should have signalled an error already. */
5291 if (elf_hash_table (info)->tls_sec == NULL)
5292 return 0;
5293 return elf_hash_table (info)->tls_sec->vma;
5294 }
5295
5296 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
5297
5298 static bfd_vma
5299 tpoff (struct bfd_link_info *info, bfd_vma address)
5300 {
5301 /* If tls_sec is NULL, we should have signalled an error already. */
5302 if (elf_hash_table (info)->tls_sec == NULL)
5303 return 0;
5304 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
5305 structure which has 2 pointer fields. */
5306 return (address - elf_hash_table (info)->tls_sec->vma
5307 + align_power ((bfd_vma) 8,
5308 elf_hash_table (info)->tls_sec->alignment_power));
5309 }
5310
5311 static asection *
5312 sh_elf_gc_mark_hook (asection *sec,
5313 struct bfd_link_info *info,
5314 Elf_Internal_Rela *rel,
5315 struct elf_link_hash_entry *h,
5316 Elf_Internal_Sym *sym)
5317 {
5318 if (h != NULL)
5319 switch (ELF32_R_TYPE (rel->r_info))
5320 {
5321 case R_SH_GNU_VTINHERIT:
5322 case R_SH_GNU_VTENTRY:
5323 return NULL;
5324 }
5325
5326 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5327 }
5328
5329 /* Copy the extra info we tack onto an elf_link_hash_entry. */
5330
5331 static void
5332 sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
5333 struct elf_link_hash_entry *dir,
5334 struct elf_link_hash_entry *ind)
5335 {
5336 struct elf_sh_link_hash_entry *edir, *eind;
5337
5338 edir = (struct elf_sh_link_hash_entry *) dir;
5339 eind = (struct elf_sh_link_hash_entry *) ind;
5340
5341 if (eind->dyn_relocs != NULL)
5342 {
5343 if (edir->dyn_relocs != NULL)
5344 {
5345 struct elf_dyn_relocs **pp;
5346 struct elf_dyn_relocs *p;
5347
5348 /* Add reloc counts against the indirect sym to the direct sym
5349 list. Merge any entries against the same section. */
5350 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
5351 {
5352 struct elf_dyn_relocs *q;
5353
5354 for (q = edir->dyn_relocs; q != NULL; q = q->next)
5355 if (q->sec == p->sec)
5356 {
5357 q->pc_count += p->pc_count;
5358 q->count += p->count;
5359 *pp = p->next;
5360 break;
5361 }
5362 if (q == NULL)
5363 pp = &p->next;
5364 }
5365 *pp = edir->dyn_relocs;
5366 }
5367
5368 edir->dyn_relocs = eind->dyn_relocs;
5369 eind->dyn_relocs = NULL;
5370 }
5371 edir->gotplt_refcount = eind->gotplt_refcount;
5372 eind->gotplt_refcount = 0;
5373 edir->funcdesc.refcount += eind->funcdesc.refcount;
5374 eind->funcdesc.refcount = 0;
5375 edir->abs_funcdesc_refcount += eind->abs_funcdesc_refcount;
5376 eind->abs_funcdesc_refcount = 0;
5377
5378 if (ind->root.type == bfd_link_hash_indirect
5379 && dir->got.refcount <= 0)
5380 {
5381 edir->got_type = eind->got_type;
5382 eind->got_type = GOT_UNKNOWN;
5383 }
5384
5385 if (ind->root.type != bfd_link_hash_indirect
5386 && dir->dynamic_adjusted)
5387 {
5388 /* If called to transfer flags for a weakdef during processing
5389 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
5390 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
5391 if (dir->versioned != versioned_hidden)
5392 dir->ref_dynamic |= ind->ref_dynamic;
5393 dir->ref_regular |= ind->ref_regular;
5394 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
5395 dir->needs_plt |= ind->needs_plt;
5396 }
5397 else
5398 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
5399 }
5400
5401 static int
5402 sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
5403 int is_local)
5404 {
5405 if (bfd_link_pic (info))
5406 return r_type;
5407
5408 switch (r_type)
5409 {
5410 case R_SH_TLS_GD_32:
5411 case R_SH_TLS_IE_32:
5412 if (is_local)
5413 return R_SH_TLS_LE_32;
5414 return R_SH_TLS_IE_32;
5415 case R_SH_TLS_LD_32:
5416 return R_SH_TLS_LE_32;
5417 }
5418
5419 return r_type;
5420 }
5421
5422 /* Look through the relocs for a section during the first phase.
5423 Since we don't do .gots or .plts, we just need to consider the
5424 virtual table relocs for gc. */
5425
5426 static bfd_boolean
5427 sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
5428 const Elf_Internal_Rela *relocs)
5429 {
5430 Elf_Internal_Shdr *symtab_hdr;
5431 struct elf_link_hash_entry **sym_hashes;
5432 struct elf_sh_link_hash_table *htab;
5433 const Elf_Internal_Rela *rel;
5434 const Elf_Internal_Rela *rel_end;
5435 asection *sreloc;
5436 unsigned int r_type;
5437 enum got_type got_type, old_got_type;
5438
5439 sreloc = NULL;
5440
5441 if (bfd_link_relocatable (info))
5442 return TRUE;
5443
5444 /* Don't do anything special with non-loaded, non-alloced sections.
5445 In particular, any relocs in such sections should not affect GOT
5446 and PLT reference counting (ie. we don't allow them to create GOT
5447 or PLT entries), there's no possibility or desire to optimize TLS
5448 relocs, and there's not much point in propagating relocs to shared
5449 libs that the dynamic linker won't relocate. */
5450 if ((sec->flags & SEC_ALLOC) == 0)
5451 return TRUE;
5452
5453 BFD_ASSERT (is_sh_elf (abfd));
5454
5455 symtab_hdr = &elf_symtab_hdr (abfd);
5456 sym_hashes = elf_sym_hashes (abfd);
5457
5458 htab = sh_elf_hash_table (info);
5459 if (htab == NULL)
5460 return FALSE;
5461
5462 rel_end = relocs + sec->reloc_count;
5463 for (rel = relocs; rel < rel_end; rel++)
5464 {
5465 struct elf_link_hash_entry *h;
5466 unsigned long r_symndx;
5467
5468 r_symndx = ELF32_R_SYM (rel->r_info);
5469 r_type = ELF32_R_TYPE (rel->r_info);
5470
5471 if (r_symndx < symtab_hdr->sh_info)
5472 h = NULL;
5473 else
5474 {
5475 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5476 while (h->root.type == bfd_link_hash_indirect
5477 || h->root.type == bfd_link_hash_warning)
5478 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5479 }
5480
5481 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
5482 if (! bfd_link_pic (info)
5483 && r_type == R_SH_TLS_IE_32
5484 && h != NULL
5485 && h->root.type != bfd_link_hash_undefined
5486 && h->root.type != bfd_link_hash_undefweak
5487 && (h->dynindx == -1
5488 || h->def_regular))
5489 r_type = R_SH_TLS_LE_32;
5490
5491 if (htab->fdpic_p)
5492 switch (r_type)
5493 {
5494 case R_SH_GOTOFFFUNCDESC:
5495 case R_SH_GOTOFFFUNCDESC20:
5496 case R_SH_FUNCDESC:
5497 case R_SH_GOTFUNCDESC:
5498 case R_SH_GOTFUNCDESC20:
5499 if (h != NULL)
5500 {
5501 if (h->dynindx == -1)
5502 switch (ELF_ST_VISIBILITY (h->other))
5503 {
5504 case STV_INTERNAL:
5505 case STV_HIDDEN:
5506 break;
5507 default:
5508 bfd_elf_link_record_dynamic_symbol (info, h);
5509 break;
5510 }
5511 }
5512 break;
5513 }
5514
5515 /* Some relocs require a global offset table. */
5516 if (htab->root.sgot == NULL)
5517 {
5518 switch (r_type)
5519 {
5520 case R_SH_DIR32:
5521 /* This may require an rofixup. */
5522 if (!htab->fdpic_p)
5523 break;
5524 /* Fall through. */
5525 case R_SH_GOTPLT32:
5526 case R_SH_GOT32:
5527 case R_SH_GOT20:
5528 case R_SH_GOTOFF:
5529 case R_SH_GOTOFF20:
5530 case R_SH_FUNCDESC:
5531 case R_SH_GOTFUNCDESC:
5532 case R_SH_GOTFUNCDESC20:
5533 case R_SH_GOTOFFFUNCDESC:
5534 case R_SH_GOTOFFFUNCDESC20:
5535 case R_SH_GOTPC:
5536 case R_SH_TLS_GD_32:
5537 case R_SH_TLS_LD_32:
5538 case R_SH_TLS_IE_32:
5539 if (htab->root.dynobj == NULL)
5540 htab->root.dynobj = abfd;
5541 if (!create_got_section (htab->root.dynobj, info))
5542 return FALSE;
5543 break;
5544
5545 default:
5546 break;
5547 }
5548 }
5549
5550 switch (r_type)
5551 {
5552 /* This relocation describes the C++ object vtable hierarchy.
5553 Reconstruct it for later use during GC. */
5554 case R_SH_GNU_VTINHERIT:
5555 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5556 return FALSE;
5557 break;
5558
5559 /* This relocation describes which C++ vtable entries are actually
5560 used. Record for later use during GC. */
5561 case R_SH_GNU_VTENTRY:
5562 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5563 return FALSE;
5564 break;
5565
5566 case R_SH_TLS_IE_32:
5567 if (bfd_link_pic (info))
5568 info->flags |= DF_STATIC_TLS;
5569
5570 /* FALLTHROUGH */
5571 force_got:
5572 case R_SH_TLS_GD_32:
5573 case R_SH_GOT32:
5574 case R_SH_GOT20:
5575 case R_SH_GOTFUNCDESC:
5576 case R_SH_GOTFUNCDESC20:
5577 switch (r_type)
5578 {
5579 default:
5580 got_type = GOT_NORMAL;
5581 break;
5582 case R_SH_TLS_GD_32:
5583 got_type = GOT_TLS_GD;
5584 break;
5585 case R_SH_TLS_IE_32:
5586 got_type = GOT_TLS_IE;
5587 break;
5588 case R_SH_GOTFUNCDESC:
5589 case R_SH_GOTFUNCDESC20:
5590 got_type = GOT_FUNCDESC;
5591 break;
5592 }
5593
5594 if (h != NULL)
5595 {
5596 h->got.refcount += 1;
5597 old_got_type = sh_elf_hash_entry (h)->got_type;
5598 }
5599 else
5600 {
5601 bfd_signed_vma *local_got_refcounts;
5602
5603 /* This is a global offset table entry for a local
5604 symbol. */
5605 local_got_refcounts = elf_local_got_refcounts (abfd);
5606 if (local_got_refcounts == NULL)
5607 {
5608 bfd_size_type size;
5609
5610 size = symtab_hdr->sh_info;
5611 size *= sizeof (bfd_signed_vma);
5612 size += symtab_hdr->sh_info;
5613 local_got_refcounts = ((bfd_signed_vma *)
5614 bfd_zalloc (abfd, size));
5615 if (local_got_refcounts == NULL)
5616 return FALSE;
5617 elf_local_got_refcounts (abfd) = local_got_refcounts;
5618 sh_elf_local_got_type (abfd)
5619 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5620 }
5621 local_got_refcounts[r_symndx] += 1;
5622 old_got_type = sh_elf_local_got_type (abfd) [r_symndx];
5623 }
5624
5625 /* If a TLS symbol is accessed using IE at least once,
5626 there is no point to use dynamic model for it. */
5627 if (old_got_type != got_type && old_got_type != GOT_UNKNOWN
5628 && (old_got_type != GOT_TLS_GD || got_type != GOT_TLS_IE))
5629 {
5630 if (old_got_type == GOT_TLS_IE && got_type == GOT_TLS_GD)
5631 got_type = GOT_TLS_IE;
5632 else
5633 {
5634 if ((old_got_type == GOT_FUNCDESC || got_type == GOT_FUNCDESC)
5635 && (old_got_type == GOT_NORMAL || got_type == GOT_NORMAL))
5636 _bfd_error_handler
5637 /* xgettext:c-format */
5638 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5639 abfd, h->root.root.string);
5640 else if (old_got_type == GOT_FUNCDESC
5641 || got_type == GOT_FUNCDESC)
5642 _bfd_error_handler
5643 /* xgettext:c-format */
5644 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5645 abfd, h->root.root.string);
5646 else
5647 _bfd_error_handler
5648 /* xgettext:c-format */
5649 (_("%pB: `%s' accessed both as normal and thread local symbol"),
5650 abfd, h->root.root.string);
5651 return FALSE;
5652 }
5653 }
5654
5655 if (old_got_type != got_type)
5656 {
5657 if (h != NULL)
5658 sh_elf_hash_entry (h)->got_type = got_type;
5659 else
5660 sh_elf_local_got_type (abfd) [r_symndx] = got_type;
5661 }
5662
5663 break;
5664
5665 case R_SH_TLS_LD_32:
5666 sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5667 break;
5668
5669 case R_SH_FUNCDESC:
5670 case R_SH_GOTOFFFUNCDESC:
5671 case R_SH_GOTOFFFUNCDESC20:
5672 if (rel->r_addend)
5673 {
5674 _bfd_error_handler
5675 (_("%pB: Function descriptor relocation with non-zero addend"),
5676 abfd);
5677 return FALSE;
5678 }
5679
5680 if (h == NULL)
5681 {
5682 union gotref *local_funcdesc;
5683
5684 /* We need a function descriptor for a local symbol. */
5685 local_funcdesc = sh_elf_local_funcdesc (abfd);
5686 if (local_funcdesc == NULL)
5687 {
5688 bfd_size_type size;
5689
5690 size = symtab_hdr->sh_info * sizeof (union gotref);
5691 local_funcdesc = (union gotref *) bfd_zalloc (abfd, size);
5692 if (local_funcdesc == NULL)
5693 return FALSE;
5694 sh_elf_local_funcdesc (abfd) = local_funcdesc;
5695 }
5696 local_funcdesc[r_symndx].refcount += 1;
5697
5698 if (r_type == R_SH_FUNCDESC)
5699 {
5700 if (!bfd_link_pic (info))
5701 htab->srofixup->size += 4;
5702 else
5703 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
5704 }
5705 }
5706 else
5707 {
5708 sh_elf_hash_entry (h)->funcdesc.refcount++;
5709 if (r_type == R_SH_FUNCDESC)
5710 sh_elf_hash_entry (h)->abs_funcdesc_refcount++;
5711
5712 /* If there is a function descriptor reference, then
5713 there should not be any non-FDPIC references. */
5714 old_got_type = sh_elf_hash_entry (h)->got_type;
5715 if (old_got_type != GOT_FUNCDESC && old_got_type != GOT_UNKNOWN)
5716 {
5717 if (old_got_type == GOT_NORMAL)
5718 _bfd_error_handler
5719 /* xgettext:c-format */
5720 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5721 abfd, h->root.root.string);
5722 else
5723 _bfd_error_handler
5724 /* xgettext:c-format */
5725 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5726 abfd, h->root.root.string);
5727 }
5728 }
5729 break;
5730
5731 case R_SH_GOTPLT32:
5732 /* If this is a local symbol, we resolve it directly without
5733 creating a procedure linkage table entry. */
5734
5735 if (h == NULL
5736 || h->forced_local
5737 || ! bfd_link_pic (info)
5738 || info->symbolic
5739 || h->dynindx == -1)
5740 goto force_got;
5741
5742 h->needs_plt = 1;
5743 h->plt.refcount += 1;
5744 ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5745
5746 break;
5747
5748 case R_SH_PLT32:
5749 /* This symbol requires a procedure linkage table entry. We
5750 actually build the entry in adjust_dynamic_symbol,
5751 because this might be a case of linking PIC code which is
5752 never referenced by a dynamic object, in which case we
5753 don't need to generate a procedure linkage table entry
5754 after all. */
5755
5756 /* If this is a local symbol, we resolve it directly without
5757 creating a procedure linkage table entry. */
5758 if (h == NULL)
5759 continue;
5760
5761 if (h->forced_local)
5762 break;
5763
5764 h->needs_plt = 1;
5765 h->plt.refcount += 1;
5766 break;
5767
5768 case R_SH_DIR32:
5769 case R_SH_REL32:
5770 if (h != NULL && ! bfd_link_pic (info))
5771 {
5772 h->non_got_ref = 1;
5773 h->plt.refcount += 1;
5774 }
5775
5776 /* If we are creating a shared library, and this is a reloc
5777 against a global symbol, or a non PC relative reloc
5778 against a local symbol, then we need to copy the reloc
5779 into the shared library. However, if we are linking with
5780 -Bsymbolic, we do not need to copy a reloc against a
5781 global symbol which is defined in an object we are
5782 including in the link (i.e., DEF_REGULAR is set). At
5783 this point we have not seen all the input files, so it is
5784 possible that DEF_REGULAR is not set now but will be set
5785 later (it is never cleared). We account for that
5786 possibility below by storing information in the
5787 dyn_relocs field of the hash table entry. A similar
5788 situation occurs when creating shared libraries and symbol
5789 visibility changes render the symbol local.
5790
5791 If on the other hand, we are creating an executable, we
5792 may need to keep relocations for symbols satisfied by a
5793 dynamic library if we manage to avoid copy relocs for the
5794 symbol. */
5795 if ((bfd_link_pic (info)
5796 && (sec->flags & SEC_ALLOC) != 0
5797 && (r_type != R_SH_REL32
5798 || (h != NULL
5799 && (! info->symbolic
5800 || h->root.type == bfd_link_hash_defweak
5801 || !h->def_regular))))
5802 || (! bfd_link_pic (info)
5803 && (sec->flags & SEC_ALLOC) != 0
5804 && h != NULL
5805 && (h->root.type == bfd_link_hash_defweak
5806 || !h->def_regular)))
5807 {
5808 struct elf_dyn_relocs *p;
5809 struct elf_dyn_relocs **head;
5810
5811 if (htab->root.dynobj == NULL)
5812 htab->root.dynobj = abfd;
5813
5814 /* When creating a shared object, we must copy these
5815 reloc types into the output file. We create a reloc
5816 section in dynobj and make room for this reloc. */
5817 if (sreloc == NULL)
5818 {
5819 sreloc = _bfd_elf_make_dynamic_reloc_section
5820 (sec, htab->root.dynobj, 2, abfd, /*rela?*/ TRUE);
5821
5822 if (sreloc == NULL)
5823 return FALSE;
5824 }
5825
5826 /* If this is a global symbol, we count the number of
5827 relocations we need for this symbol. */
5828 if (h != NULL)
5829 head = &((struct elf_sh_link_hash_entry *) h)->dyn_relocs;
5830 else
5831 {
5832 /* Track dynamic relocs needed for local syms too. */
5833 asection *s;
5834 void *vpp;
5835 Elf_Internal_Sym *isym;
5836
5837 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5838 abfd, r_symndx);
5839 if (isym == NULL)
5840 return FALSE;
5841
5842 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5843 if (s == NULL)
5844 s = sec;
5845
5846 vpp = &elf_section_data (s)->local_dynrel;
5847 head = (struct elf_dyn_relocs **) vpp;
5848 }
5849
5850 p = *head;
5851 if (p == NULL || p->sec != sec)
5852 {
5853 size_t amt = sizeof (*p);
5854 p = bfd_alloc (htab->root.dynobj, amt);
5855 if (p == NULL)
5856 return FALSE;
5857 p->next = *head;
5858 *head = p;
5859 p->sec = sec;
5860 p->count = 0;
5861 p->pc_count = 0;
5862 }
5863
5864 p->count += 1;
5865 if (r_type == R_SH_REL32)
5866 p->pc_count += 1;
5867 }
5868
5869 /* Allocate the fixup regardless of whether we need a relocation.
5870 If we end up generating the relocation, we'll unallocate the
5871 fixup. */
5872 if (htab->fdpic_p && !bfd_link_pic (info)
5873 && r_type == R_SH_DIR32
5874 && (sec->flags & SEC_ALLOC) != 0)
5875 htab->srofixup->size += 4;
5876 break;
5877
5878 case R_SH_TLS_LE_32:
5879 if (bfd_link_dll (info))
5880 {
5881 _bfd_error_handler
5882 (_("%pB: TLS local exec code cannot be linked into shared objects"),
5883 abfd);
5884 return FALSE;
5885 }
5886
5887 break;
5888
5889 case R_SH_TLS_LDO_32:
5890 /* Nothing to do. */
5891 break;
5892
5893 default:
5894 break;
5895 }
5896 }
5897
5898 return TRUE;
5899 }
5900
5901 #ifndef sh_elf_set_mach_from_flags
5902 static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5903
5904 static bfd_boolean
5905 sh_elf_set_mach_from_flags (bfd *abfd)
5906 {
5907 flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5908
5909 if (flags >= ARRAY_SIZE (sh_ef_bfd_table))
5910 return FALSE;
5911
5912 if (sh_ef_bfd_table[flags] == 0)
5913 return FALSE;
5914
5915 bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5916
5917 return TRUE;
5918 }
5919
5920
5921 /* Reverse table lookup for sh_ef_bfd_table[].
5922 Given a bfd MACH value from archures.c
5923 return the equivalent ELF flags from the table.
5924 Return -1 if no match is found. */
5925
5926 int
5927 sh_elf_get_flags_from_mach (unsigned long mach)
5928 {
5929 int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5930
5931 for (; i>0; i--)
5932 if (sh_ef_bfd_table[i] == mach)
5933 return i;
5934
5935 /* shouldn't get here */
5936 BFD_FAIL();
5937
5938 return -1;
5939 }
5940 #endif /* not sh_elf_set_mach_from_flags */
5941
5942 #ifndef sh_elf_copy_private_data
5943 /* Copy backend specific data from one object module to another */
5944
5945 static bfd_boolean
5946 sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5947 {
5948 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5949 return TRUE;
5950
5951 if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd))
5952 return FALSE;
5953
5954 return sh_elf_set_mach_from_flags (obfd);
5955 }
5956 #endif /* not sh_elf_copy_private_data */
5957
5958 #ifndef sh_elf_merge_private_data
5959
5960 /* This function returns the ELF architecture number that
5961 corresponds to the given arch_sh* flags. */
5962
5963 int
5964 sh_find_elf_flags (unsigned int arch_set)
5965 {
5966 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5967 unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5968
5969 return sh_elf_get_flags_from_mach (bfd_mach);
5970 }
5971
5972 /* Merge the architecture type of two BFD files, such that the
5973 resultant architecture supports all the features required
5974 by the two input BFDs.
5975 If the input BFDs are multually incompatible - i.e. one uses
5976 DSP while the other uses FPU - or there is no known architecture
5977 that fits the requirements then an error is emitted. */
5978
5979 static bfd_boolean
5980 sh_merge_bfd_arch (bfd *ibfd, struct bfd_link_info *info)
5981 {
5982 bfd *obfd = info->output_bfd;
5983 unsigned int old_arch, new_arch, merged_arch;
5984
5985 if (! _bfd_generic_verify_endian_match (ibfd, info))
5986 return FALSE;
5987
5988 old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
5989 new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));
5990
5991 merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);
5992
5993 if (!SH_VALID_CO_ARCH_SET (merged_arch))
5994 {
5995 _bfd_error_handler
5996 /* xgettext:c-format */
5997 (_("%pB: uses %s instructions while previous modules "
5998 "use %s instructions"),
5999 ibfd,
6000 SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
6001 SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
6002 bfd_set_error (bfd_error_bad_value);
6003 return FALSE;
6004 }
6005 else if (!SH_VALID_ARCH_SET (merged_arch))
6006 {
6007 _bfd_error_handler
6008 /* xgettext:c-format */
6009 (_("internal error: merge of architecture '%s' with "
6010 "architecture '%s' produced unknown architecture"),
6011 bfd_printable_name (obfd),
6012 bfd_printable_name (ibfd));
6013 bfd_set_error (bfd_error_bad_value);
6014 return FALSE;
6015 }
6016
6017 bfd_default_set_arch_mach (obfd, bfd_arch_sh,
6018 sh_get_bfd_mach_from_arch_set (merged_arch));
6019
6020 return TRUE;
6021 }
6022
6023 /* This routine initialises the elf flags when required and
6024 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
6025
6026 static bfd_boolean
6027 sh_elf_merge_private_data (bfd *ibfd, struct bfd_link_info *info)
6028 {
6029 bfd *obfd = info->output_bfd;
6030
6031 /* FIXME: What should be checked when linking shared libraries? */
6032 if ((ibfd->flags & DYNAMIC) != 0)
6033 return TRUE;
6034
6035 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
6036 return TRUE;
6037
6038 if (! elf_flags_init (obfd))
6039 {
6040 /* This happens when ld starts out with a 'blank' output file. */
6041 elf_flags_init (obfd) = TRUE;
6042 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
6043 sh_elf_set_mach_from_flags (obfd);
6044 if (elf_elfheader (obfd)->e_flags & EF_SH_FDPIC)
6045 elf_elfheader (obfd)->e_flags &= ~EF_SH_PIC;
6046 }
6047
6048 if (! sh_merge_bfd_arch (ibfd, info))
6049 {
6050 _bfd_error_handler (_("%pB: uses instructions which are incompatible "
6051 "with instructions used in previous modules"),
6052 ibfd);
6053 bfd_set_error (bfd_error_bad_value);
6054 return FALSE;
6055 }
6056
6057 elf_elfheader (obfd)->e_flags &= ~EF_SH_MACH_MASK;
6058 elf_elfheader (obfd)->e_flags |=
6059 sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
6060
6061 if (fdpic_object_p (ibfd) != fdpic_object_p (obfd))
6062 {
6063 _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"),
6064 ibfd);
6065 bfd_set_error (bfd_error_bad_value);
6066 return FALSE;
6067 }
6068
6069 return TRUE;
6070 }
6071 #endif /* not sh_elf_merge_private_data */
6072
6073 /* Override the generic function because we need to store sh_elf_obj_tdata
6074 as the specific tdata. We set also the machine architecture from flags
6075 here. */
6076
6077 static bfd_boolean
6078 sh_elf_object_p (bfd *abfd)
6079 {
6080 if (! sh_elf_set_mach_from_flags (abfd))
6081 return FALSE;
6082
6083 return (((elf_elfheader (abfd)->e_flags & EF_SH_FDPIC) != 0)
6084 == fdpic_object_p (abfd));
6085 }
6086
6087 /* Finish up dynamic symbol handling. We set the contents of various
6088 dynamic sections here. */
6089
6090 static bfd_boolean
6091 sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
6092 struct elf_link_hash_entry *h,
6093 Elf_Internal_Sym *sym)
6094 {
6095 struct elf_sh_link_hash_table *htab;
6096
6097 htab = sh_elf_hash_table (info);
6098 if (htab == NULL)
6099 return FALSE;
6100
6101 if (h->plt.offset != (bfd_vma) -1)
6102 {
6103 asection *splt;
6104 asection *sgotplt;
6105 asection *srelplt;
6106
6107 bfd_vma plt_index;
6108 bfd_vma got_offset;
6109 Elf_Internal_Rela rel;
6110 bfd_byte *loc;
6111 const struct elf_sh_plt_info *plt_info;
6112
6113 /* This symbol has an entry in the procedure linkage table. Set
6114 it up. */
6115
6116 BFD_ASSERT (h->dynindx != -1);
6117
6118 splt = htab->root.splt;
6119 sgotplt = htab->root.sgotplt;
6120 srelplt = htab->root.srelplt;
6121 BFD_ASSERT (splt != NULL && sgotplt != NULL && srelplt != NULL);
6122
6123 /* Get the index in the procedure linkage table which
6124 corresponds to this symbol. This is the index of this symbol
6125 in all the symbols for which we are making plt entries. The
6126 first entry in the procedure linkage table is reserved. */
6127 plt_index = get_plt_index (htab->plt_info, h->plt.offset);
6128
6129 plt_info = htab->plt_info;
6130 if (plt_info->short_plt != NULL && plt_index <= MAX_SHORT_PLT)
6131 plt_info = plt_info->short_plt;
6132
6133 /* Get the offset into the .got table of the entry that
6134 corresponds to this function. */
6135 if (htab->fdpic_p)
6136 /* The offset must be relative to the GOT symbol, twelve bytes
6137 before the end of .got.plt. Each descriptor is eight
6138 bytes. */
6139 got_offset = plt_index * 8 + 12 - sgotplt->size;
6140 else
6141 /* Each .got entry is 4 bytes. The first three are
6142 reserved. */
6143 got_offset = (plt_index + 3) * 4;
6144
6145 #ifdef GOT_BIAS
6146 if (bfd_link_pic (info))
6147 got_offset -= GOT_BIAS;
6148 #endif
6149
6150 /* Fill in the entry in the procedure linkage table. */
6151 memcpy (splt->contents + h->plt.offset,
6152 plt_info->symbol_entry,
6153 plt_info->symbol_entry_size);
6154
6155 if (bfd_link_pic (info) || htab->fdpic_p)
6156 {
6157 if (plt_info->symbol_fields.got20)
6158 {
6159 bfd_reloc_status_type r;
6160 r = install_movi20_field (output_bfd, got_offset,
6161 splt->owner, splt, splt->contents,
6162 h->plt.offset
6163 + plt_info->symbol_fields.got_entry);
6164 BFD_ASSERT (r == bfd_reloc_ok);
6165 }
6166 else
6167 install_plt_field (output_bfd, FALSE, got_offset,
6168 (splt->contents
6169 + h->plt.offset
6170 + plt_info->symbol_fields.got_entry));
6171 }
6172 else
6173 {
6174 BFD_ASSERT (!plt_info->symbol_fields.got20);
6175
6176 install_plt_field (output_bfd, FALSE,
6177 (sgotplt->output_section->vma
6178 + sgotplt->output_offset
6179 + got_offset),
6180 (splt->contents
6181 + h->plt.offset
6182 + plt_info->symbol_fields.got_entry));
6183 if (htab->vxworks_p)
6184 {
6185 unsigned int reachable_plts, plts_per_4k;
6186 int distance;
6187
6188 /* Divide the PLT into groups. The first group contains
6189 REACHABLE_PLTS entries and the other groups contain
6190 PLTS_PER_4K entries. Entries in the first group can
6191 branch directly to .plt; those in later groups branch
6192 to the last element of the previous group. */
6193 /* ??? It would be better to create multiple copies of
6194 the common resolver stub. */
6195 reachable_plts = ((4096
6196 - plt_info->plt0_entry_size
6197 - (plt_info->symbol_fields.plt + 4))
6198 / plt_info->symbol_entry_size) + 1;
6199 plts_per_4k = (4096 / plt_info->symbol_entry_size);
6200 if (plt_index < reachable_plts)
6201 distance = -(h->plt.offset
6202 + plt_info->symbol_fields.plt);
6203 else
6204 distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
6205 * plt_info->symbol_entry_size);
6206
6207 /* Install the 'bra' with this offset. */
6208 bfd_put_16 (output_bfd,
6209 0xa000 | (0x0fff & ((distance - 4) / 2)),
6210 (splt->contents
6211 + h->plt.offset
6212 + plt_info->symbol_fields.plt));
6213 }
6214 else
6215 install_plt_field (output_bfd, TRUE,
6216 splt->output_section->vma + splt->output_offset,
6217 (splt->contents
6218 + h->plt.offset
6219 + plt_info->symbol_fields.plt));
6220 }
6221
6222 /* Make got_offset relative to the start of .got.plt. */
6223 #ifdef GOT_BIAS
6224 if (bfd_link_pic (info))
6225 got_offset += GOT_BIAS;
6226 #endif
6227 if (htab->fdpic_p)
6228 got_offset = plt_index * 8;
6229
6230 if (plt_info->symbol_fields.reloc_offset != MINUS_ONE)
6231 install_plt_field (output_bfd, FALSE,
6232 plt_index * sizeof (Elf32_External_Rela),
6233 (splt->contents
6234 + h->plt.offset
6235 + plt_info->symbol_fields.reloc_offset));
6236
6237 /* Fill in the entry in the global offset table. */
6238 bfd_put_32 (output_bfd,
6239 (splt->output_section->vma
6240 + splt->output_offset
6241 + h->plt.offset
6242 + plt_info->symbol_resolve_offset),
6243 sgotplt->contents + got_offset);
6244 if (htab->fdpic_p)
6245 bfd_put_32 (output_bfd,
6246 sh_elf_osec_to_segment (output_bfd, splt->output_section),
6247 sgotplt->contents + got_offset + 4);
6248
6249 /* Fill in the entry in the .rela.plt section. */
6250 rel.r_offset = (sgotplt->output_section->vma
6251 + sgotplt->output_offset
6252 + got_offset);
6253 if (htab->fdpic_p)
6254 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_FUNCDESC_VALUE);
6255 else
6256 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
6257 rel.r_addend = 0;
6258 #ifdef GOT_BIAS
6259 rel.r_addend = GOT_BIAS;
6260 #endif
6261 loc = srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
6262 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6263
6264 if (htab->vxworks_p && !bfd_link_pic (info))
6265 {
6266 /* Create the .rela.plt.unloaded relocations for this PLT entry.
6267 Begin by pointing LOC to the first such relocation. */
6268 loc = (htab->srelplt2->contents
6269 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
6270
6271 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
6272 for the PLT entry's pointer to the .got.plt entry. */
6273 rel.r_offset = (splt->output_section->vma
6274 + splt->output_offset
6275 + h->plt.offset
6276 + plt_info->symbol_fields.got_entry);
6277 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6278 rel.r_addend = got_offset;
6279 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6280 loc += sizeof (Elf32_External_Rela);
6281
6282 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
6283 the .got.plt entry, which initially points to .plt. */
6284 rel.r_offset = (sgotplt->output_section->vma
6285 + sgotplt->output_offset
6286 + got_offset);
6287 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
6288 rel.r_addend = 0;
6289 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6290 }
6291
6292 if (!h->def_regular)
6293 {
6294 /* Mark the symbol as undefined, rather than as defined in
6295 the .plt section. Leave the value alone. */
6296 sym->st_shndx = SHN_UNDEF;
6297 }
6298 }
6299
6300 if (h->got.offset != (bfd_vma) -1
6301 && sh_elf_hash_entry (h)->got_type != GOT_TLS_GD
6302 && sh_elf_hash_entry (h)->got_type != GOT_TLS_IE
6303 && sh_elf_hash_entry (h)->got_type != GOT_FUNCDESC)
6304 {
6305 asection *sgot;
6306 asection *srelgot;
6307 Elf_Internal_Rela rel;
6308 bfd_byte *loc;
6309
6310 /* This symbol has an entry in the global offset table. Set it
6311 up. */
6312
6313 sgot = htab->root.sgot;
6314 srelgot = htab->root.srelgot;
6315 BFD_ASSERT (sgot != NULL && srelgot != NULL);
6316
6317 rel.r_offset = (sgot->output_section->vma
6318 + sgot->output_offset
6319 + (h->got.offset &~ (bfd_vma) 1));
6320
6321 /* If this is a static link, or it is a -Bsymbolic link and the
6322 symbol is defined locally or was forced to be local because
6323 of a version file, we just want to emit a RELATIVE reloc.
6324 The entry in the global offset table will already have been
6325 initialized in the relocate_section function. */
6326 if (bfd_link_pic (info)
6327 && SYMBOL_REFERENCES_LOCAL (info, h))
6328 {
6329 if (htab->fdpic_p)
6330 {
6331 asection *sec = h->root.u.def.section;
6332 int dynindx
6333 = elf_section_data (sec->output_section)->dynindx;
6334
6335 rel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
6336 rel.r_addend = (h->root.u.def.value
6337 + h->root.u.def.section->output_offset);
6338 }
6339 else
6340 {
6341 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
6342 rel.r_addend = (h->root.u.def.value
6343 + h->root.u.def.section->output_section->vma
6344 + h->root.u.def.section->output_offset);
6345 }
6346 }
6347 else
6348 {
6349 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
6350 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
6351 rel.r_addend = 0;
6352 }
6353
6354 loc = srelgot->contents;
6355 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
6356 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6357 }
6358
6359 if (h->needs_copy)
6360 {
6361 asection *s;
6362 Elf_Internal_Rela rel;
6363 bfd_byte *loc;
6364
6365 /* This symbol needs a copy reloc. Set it up. */
6366
6367 BFD_ASSERT (h->dynindx != -1
6368 && (h->root.type == bfd_link_hash_defined
6369 || h->root.type == bfd_link_hash_defweak));
6370
6371 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
6372 BFD_ASSERT (s != NULL);
6373
6374 rel.r_offset = (h->root.u.def.value
6375 + h->root.u.def.section->output_section->vma
6376 + h->root.u.def.section->output_offset);
6377 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
6378 rel.r_addend = 0;
6379 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6380 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6381 }
6382
6383 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
6384 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
6385 ".got" section. */
6386 if (h == htab->root.hdynamic
6387 || (!htab->vxworks_p && h == htab->root.hgot))
6388 sym->st_shndx = SHN_ABS;
6389
6390 return TRUE;
6391 }
6392
6393 /* Finish up the dynamic sections. */
6394
6395 static bfd_boolean
6396 sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
6397 {
6398 struct elf_sh_link_hash_table *htab;
6399 asection *sgotplt;
6400 asection *sdyn;
6401
6402 htab = sh_elf_hash_table (info);
6403 if (htab == NULL)
6404 return FALSE;
6405
6406 sgotplt = htab->root.sgotplt;
6407 sdyn = bfd_get_linker_section (htab->root.dynobj, ".dynamic");
6408
6409 if (htab->root.dynamic_sections_created)
6410 {
6411 asection *splt;
6412 Elf32_External_Dyn *dyncon, *dynconend;
6413
6414 BFD_ASSERT (sgotplt != NULL && sdyn != NULL);
6415
6416 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6417 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6418 for (; dyncon < dynconend; dyncon++)
6419 {
6420 Elf_Internal_Dyn dyn;
6421 asection *s;
6422
6423 bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
6424
6425 switch (dyn.d_tag)
6426 {
6427 default:
6428 if (htab->vxworks_p
6429 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
6430 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6431 break;
6432
6433 case DT_PLTGOT:
6434 BFD_ASSERT (htab->root.hgot != NULL);
6435 s = htab->root.hgot->root.u.def.section;
6436 dyn.d_un.d_ptr = htab->root.hgot->root.u.def.value
6437 + s->output_section->vma + s->output_offset;
6438 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6439 break;
6440
6441 case DT_JMPREL:
6442 s = htab->root.srelplt->output_section;
6443 BFD_ASSERT (s != NULL);
6444 dyn.d_un.d_ptr = s->vma;
6445 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6446 break;
6447
6448 case DT_PLTRELSZ:
6449 s = htab->root.srelplt->output_section;
6450 BFD_ASSERT (s != NULL);
6451 dyn.d_un.d_val = s->size;
6452 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6453 break;
6454 }
6455 }
6456
6457 /* Fill in the first entry in the procedure linkage table. */
6458 splt = htab->root.splt;
6459 if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
6460 {
6461 unsigned int i;
6462
6463 memcpy (splt->contents,
6464 htab->plt_info->plt0_entry,
6465 htab->plt_info->plt0_entry_size);
6466 for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
6467 if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
6468 install_plt_field (output_bfd, FALSE,
6469 (sgotplt->output_section->vma
6470 + sgotplt->output_offset
6471 + (i * 4)),
6472 (splt->contents
6473 + htab->plt_info->plt0_got_fields[i]));
6474
6475 if (htab->vxworks_p)
6476 {
6477 /* Finalize the .rela.plt.unloaded contents. */
6478 Elf_Internal_Rela rel;
6479 bfd_byte *loc;
6480
6481 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
6482 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
6483 loc = htab->srelplt2->contents;
6484 rel.r_offset = (splt->output_section->vma
6485 + splt->output_offset
6486 + htab->plt_info->plt0_got_fields[2]);
6487 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6488 rel.r_addend = 8;
6489 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6490 loc += sizeof (Elf32_External_Rela);
6491
6492 /* Fix up the remaining .rela.plt.unloaded relocations.
6493 They may have the wrong symbol index for _G_O_T_ or
6494 _P_L_T_ depending on the order in which symbols were
6495 output. */
6496 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
6497 {
6498 /* The PLT entry's pointer to the .got.plt slot. */
6499 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6500 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
6501 R_SH_DIR32);
6502 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6503 loc += sizeof (Elf32_External_Rela);
6504
6505 /* The .got.plt slot's pointer to .plt. */
6506 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6507 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
6508 R_SH_DIR32);
6509 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6510 loc += sizeof (Elf32_External_Rela);
6511 }
6512 }
6513
6514 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6515 really seem like the right value. */
6516 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
6517 }
6518 }
6519
6520 /* Fill in the first three entries in the global offset table. */
6521 if (sgotplt && sgotplt->size > 0 && !htab->fdpic_p)
6522 {
6523 if (sdyn == NULL)
6524 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents);
6525 else
6526 bfd_put_32 (output_bfd,
6527 sdyn->output_section->vma + sdyn->output_offset,
6528 sgotplt->contents);
6529 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4);
6530 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8);
6531 }
6532
6533 if (sgotplt && sgotplt->size > 0)
6534 elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4;
6535
6536 /* At the very end of the .rofixup section is a pointer to the GOT. */
6537 if (htab->fdpic_p && htab->srofixup != NULL)
6538 {
6539 struct elf_link_hash_entry *hgot = htab->root.hgot;
6540 bfd_vma got_value = hgot->root.u.def.value
6541 + hgot->root.u.def.section->output_section->vma
6542 + hgot->root.u.def.section->output_offset;
6543
6544 sh_elf_add_rofixup (output_bfd, htab->srofixup, got_value);
6545
6546 /* Make sure we allocated and generated the same number of fixups. */
6547 BFD_ASSERT (htab->srofixup->reloc_count * 4 == htab->srofixup->size);
6548 }
6549
6550 if (htab->srelfuncdesc)
6551 BFD_ASSERT (htab->srelfuncdesc->reloc_count * sizeof (Elf32_External_Rela)
6552 == htab->srelfuncdesc->size);
6553
6554 if (htab->root.srelgot)
6555 BFD_ASSERT (htab->root.srelgot->reloc_count * sizeof (Elf32_External_Rela)
6556 == htab->root.srelgot->size);
6557
6558 return TRUE;
6559 }
6560
6561 static enum elf_reloc_type_class
6562 sh_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
6563 const asection *rel_sec ATTRIBUTE_UNUSED,
6564 const Elf_Internal_Rela *rela)
6565 {
6566 switch ((int) ELF32_R_TYPE (rela->r_info))
6567 {
6568 case R_SH_RELATIVE:
6569 return reloc_class_relative;
6570 case R_SH_JMP_SLOT:
6571 return reloc_class_plt;
6572 case R_SH_COPY:
6573 return reloc_class_copy;
6574 default:
6575 return reloc_class_normal;
6576 }
6577 }
6578
6579 #if !defined SH_TARGET_ALREADY_DEFINED
6580 /* Support for Linux core dump NOTE sections. */
6581
6582 static bfd_boolean
6583 elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
6584 {
6585 int offset;
6586 unsigned int size;
6587
6588 switch (note->descsz)
6589 {
6590 default:
6591 return FALSE;
6592
6593 case 168: /* Linux/SH */
6594 /* pr_cursig */
6595 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
6596
6597 /* pr_pid */
6598 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
6599
6600 /* pr_reg */
6601 offset = 72;
6602 size = 92;
6603
6604 break;
6605 }
6606
6607 /* Make a ".reg/999" section. */
6608 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
6609 size, note->descpos + offset);
6610 }
6611
6612 static bfd_boolean
6613 elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
6614 {
6615 switch (note->descsz)
6616 {
6617 default:
6618 return FALSE;
6619
6620 case 124: /* Linux/SH elf_prpsinfo */
6621 elf_tdata (abfd)->core->program
6622 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
6623 elf_tdata (abfd)->core->command
6624 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
6625 }
6626
6627 /* Note that for some reason, a spurious space is tacked
6628 onto the end of the args in some (at least one anyway)
6629 implementations, so strip it off if it exists. */
6630
6631 {
6632 char *command = elf_tdata (abfd)->core->command;
6633 int n = strlen (command);
6634
6635 if (0 < n && command[n - 1] == ' ')
6636 command[n - 1] = '\0';
6637 }
6638
6639 return TRUE;
6640 }
6641 #endif /* not SH_TARGET_ALREADY_DEFINED */
6642
6643
6644 /* Return address for Ith PLT stub in section PLT, for relocation REL
6645 or (bfd_vma) -1 if it should not be included. */
6646
6647 static bfd_vma
6648 sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6649 const arelent *rel ATTRIBUTE_UNUSED)
6650 {
6651 const struct elf_sh_plt_info *plt_info;
6652
6653 plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6654 return plt->vma + get_plt_offset (plt_info, i);
6655 }
6656
6657 /* Decide whether to attempt to turn absptr or lsda encodings in
6658 shared libraries into pcrel within the given input section. */
6659
6660 static bfd_boolean
6661 sh_elf_use_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED,
6662 struct bfd_link_info *info,
6663 asection *eh_frame_section ATTRIBUTE_UNUSED)
6664 {
6665 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6666
6667 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
6668 if (htab->fdpic_p)
6669 return FALSE;
6670
6671 return TRUE;
6672 }
6673
6674 /* Adjust the contents of an eh_frame_hdr section before they're output. */
6675
6676 static bfd_byte
6677 sh_elf_encode_eh_address (bfd *abfd,
6678 struct bfd_link_info *info,
6679 asection *osec, bfd_vma offset,
6680 asection *loc_sec, bfd_vma loc_offset,
6681 bfd_vma *encoded)
6682 {
6683 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6684 struct elf_link_hash_entry *h;
6685
6686 if (!htab->fdpic_p)
6687 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, loc_sec,
6688 loc_offset, encoded);
6689
6690 h = htab->root.hgot;
6691 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
6692
6693 if (! h || (sh_elf_osec_to_segment (abfd, osec)
6694 == sh_elf_osec_to_segment (abfd, loc_sec->output_section)))
6695 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
6696 loc_sec, loc_offset, encoded);
6697
6698 BFD_ASSERT (sh_elf_osec_to_segment (abfd, osec)
6699 == (sh_elf_osec_to_segment
6700 (abfd, h->root.u.def.section->output_section)));
6701
6702 *encoded = osec->vma + offset
6703 - (h->root.u.def.value
6704 + h->root.u.def.section->output_section->vma
6705 + h->root.u.def.section->output_offset);
6706
6707 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
6708 }
6709
6710 #if !defined SH_TARGET_ALREADY_DEFINED
6711 #define TARGET_BIG_SYM sh_elf32_vec
6712 #define TARGET_BIG_NAME "elf32-sh"
6713 #define TARGET_LITTLE_SYM sh_elf32_le_vec
6714 #define TARGET_LITTLE_NAME "elf32-shl"
6715 #endif
6716
6717 #define ELF_ARCH bfd_arch_sh
6718 #define ELF_TARGET_ID SH_ELF_DATA
6719 #define ELF_MACHINE_CODE EM_SH
6720 #ifdef __QNXTARGET__
6721 #define ELF_MAXPAGESIZE 0x1000
6722 #else
6723 #define ELF_MAXPAGESIZE 0x80
6724 #endif
6725
6726 #define elf_symbol_leading_char '_'
6727
6728 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6729 #define bfd_elf32_bfd_reloc_name_lookup \
6730 sh_elf_reloc_name_lookup
6731 #define elf_info_to_howto sh_elf_info_to_howto
6732 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6733 #define elf_backend_relocate_section sh_elf_relocate_section
6734 #define bfd_elf32_bfd_get_relocated_section_contents \
6735 sh_elf_get_relocated_section_contents
6736 #define bfd_elf32_mkobject sh_elf_mkobject
6737 #define elf_backend_object_p sh_elf_object_p
6738 #define bfd_elf32_bfd_copy_private_bfd_data \
6739 sh_elf_copy_private_data
6740 #define bfd_elf32_bfd_merge_private_bfd_data \
6741 sh_elf_merge_private_data
6742
6743 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6744 #define elf_backend_check_relocs sh_elf_check_relocs
6745 #define elf_backend_copy_indirect_symbol \
6746 sh_elf_copy_indirect_symbol
6747 #define elf_backend_create_dynamic_sections \
6748 sh_elf_create_dynamic_sections
6749 #define bfd_elf32_bfd_link_hash_table_create \
6750 sh_elf_link_hash_table_create
6751 #define elf_backend_adjust_dynamic_symbol \
6752 sh_elf_adjust_dynamic_symbol
6753 #define elf_backend_always_size_sections \
6754 sh_elf_always_size_sections
6755 #define elf_backend_size_dynamic_sections \
6756 sh_elf_size_dynamic_sections
6757 #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
6758 #define elf_backend_finish_dynamic_symbol \
6759 sh_elf_finish_dynamic_symbol
6760 #define elf_backend_finish_dynamic_sections \
6761 sh_elf_finish_dynamic_sections
6762 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6763 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6764 #define elf_backend_can_make_relative_eh_frame \
6765 sh_elf_use_relative_eh_frame
6766 #define elf_backend_can_make_lsda_relative_eh_frame \
6767 sh_elf_use_relative_eh_frame
6768 #define elf_backend_encode_eh_address \
6769 sh_elf_encode_eh_address
6770
6771 #define elf_backend_stack_align 8
6772 #define elf_backend_can_gc_sections 1
6773 #define elf_backend_can_refcount 1
6774 #define elf_backend_want_got_plt 1
6775 #define elf_backend_plt_readonly 1
6776 #define elf_backend_want_plt_sym 0
6777 #define elf_backend_got_header_size 12
6778 #define elf_backend_dtrel_excludes_plt 1
6779
6780 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
6781
6782 #if !defined SH_TARGET_ALREADY_DEFINED
6783
6784 #include "elf32-target.h"
6785
6786 /* NetBSD support. */
6787 #undef TARGET_BIG_SYM
6788 #define TARGET_BIG_SYM sh_elf32_nbsd_vec
6789 #undef TARGET_BIG_NAME
6790 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6791 #undef TARGET_LITTLE_SYM
6792 #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
6793 #undef TARGET_LITTLE_NAME
6794 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6795 #undef ELF_MAXPAGESIZE
6796 #define ELF_MAXPAGESIZE 0x10000
6797 #undef ELF_COMMONPAGESIZE
6798 #undef elf_symbol_leading_char
6799 #define elf_symbol_leading_char 0
6800 #undef elf32_bed
6801 #define elf32_bed elf32_sh_nbsd_bed
6802
6803 #include "elf32-target.h"
6804
6805
6806 /* Linux support. */
6807 #undef TARGET_BIG_SYM
6808 #define TARGET_BIG_SYM sh_elf32_linux_be_vec
6809 #undef TARGET_BIG_NAME
6810 #define TARGET_BIG_NAME "elf32-shbig-linux"
6811 #undef TARGET_LITTLE_SYM
6812 #define TARGET_LITTLE_SYM sh_elf32_linux_vec
6813 #undef TARGET_LITTLE_NAME
6814 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6815 #undef ELF_COMMONPAGESIZE
6816 #define ELF_COMMONPAGESIZE 0x1000
6817
6818 #undef elf_backend_grok_prstatus
6819 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6820 #undef elf_backend_grok_psinfo
6821 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6822 #undef elf32_bed
6823 #define elf32_bed elf32_sh_lin_bed
6824
6825 #include "elf32-target.h"
6826
6827
6828 /* FDPIC support. */
6829 #undef TARGET_BIG_SYM
6830 #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
6831 #undef TARGET_BIG_NAME
6832 #define TARGET_BIG_NAME "elf32-shbig-fdpic"
6833 #undef TARGET_LITTLE_SYM
6834 #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
6835 #undef TARGET_LITTLE_NAME
6836 #define TARGET_LITTLE_NAME "elf32-sh-fdpic"
6837
6838 #undef elf32_bed
6839 #define elf32_bed elf32_sh_fd_bed
6840
6841 #include "elf32-target.h"
6842
6843 /* VxWorks support. */
6844 #undef TARGET_BIG_SYM
6845 #define TARGET_BIG_SYM sh_elf32_vxworks_vec
6846 #undef TARGET_BIG_NAME
6847 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6848 #undef TARGET_LITTLE_SYM
6849 #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
6850 #undef TARGET_LITTLE_NAME
6851 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6852 #undef elf32_bed
6853 #define elf32_bed elf32_sh_vxworks_bed
6854
6855 #undef elf_backend_want_plt_sym
6856 #define elf_backend_want_plt_sym 1
6857 #undef elf_symbol_leading_char
6858 #define elf_symbol_leading_char '_'
6859 #define elf_backend_want_got_underscore 1
6860 #undef elf_backend_grok_prstatus
6861 #undef elf_backend_grok_psinfo
6862 #undef elf_backend_add_symbol_hook
6863 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6864 #undef elf_backend_link_output_symbol_hook
6865 #define elf_backend_link_output_symbol_hook \
6866 elf_vxworks_link_output_symbol_hook
6867 #undef elf_backend_emit_relocs
6868 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6869 #undef elf_backend_final_write_processing
6870 #define elf_backend_final_write_processing \
6871 elf_vxworks_final_write_processing
6872 #undef ELF_MAXPAGESIZE
6873 #define ELF_MAXPAGESIZE 0x1000
6874 #undef ELF_COMMONPAGESIZE
6875
6876 #include "elf32-target.h"
6877
6878 #endif /* not SH_TARGET_ALREADY_DEFINED */
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