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[binutils-gdb.git] / bfd / elf32-sh.c
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1 /* Renesas / SuperH SH specific support for 32-bit ELF
2 Copyright (C) 1996-2024 Free Software Foundation, Inc.
3 Contributed by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
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"
33 /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
34 #define OCTETS_PER_BYTE(ABFD, SEC) 1
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 bool sh_elf_relax_delete_bytes
41 (bfd *, asection *, bfd_vma, int);
42 static bool sh_elf_align_loads
43 (bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bool *);
44 static bool 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);
53 /* The name of the dynamic interpreter. This is put in the .interp
54 section. */
56 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
58 /* FDPIC binaries have a default 128K stack. */
59 #define DEFAULT_STACK_SIZE 0x20000
61 #define MINUS_ONE ((bfd_vma) 0 - 1)
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)
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[] =
75 #include "elf32-sh-relocs.h"
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[] =
83 #include "elf32-sh-relocs.h"
86 /* Return true if OUTPUT_BFD is a VxWorks object. */
88 static bool
89 vxworks_object_p (bfd *abfd ATTRIBUTE_UNUSED)
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;
95 return (abfd->xvec == &sh_elf32_vxworks_le_vec
96 || abfd->xvec == &sh_elf32_vxworks_vec);
97 #else
98 return false;
99 #endif
102 /* Return true if OUTPUT_BFD is an FDPIC object. */
104 static bool
105 fdpic_object_p (bfd *abfd ATTRIBUTE_UNUSED)
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;
111 return (abfd->xvec == &sh_elf32_fdpic_le_vec
112 || abfd->xvec == &sh_elf32_fdpic_be_vec);
113 #else
114 return false;
115 #endif
118 /* Return the howto table for ABFD. */
120 static reloc_howto_type *
121 get_howto_table (bfd *abfd)
123 if (vxworks_object_p (abfd))
124 return sh_vxworks_howto_table;
125 return sh_elf_howto_table;
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)
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;
141 /* Sanity check the address. */
142 if (addr > bfd_get_section_limit (input_bfd, input_section))
143 return bfd_reloc_outofrange;
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)
149 last_addr = addr;
150 last_symbol_section = symbol_section;
151 return bfd_reloc_ok;
153 if (last_addr != addr)
154 abort ();
155 last_addr = 0;
157 if (! symbol_section || last_symbol_section != symbol_section || end < start)
158 return bfd_reloc_outofrange;
160 /* Get the symbol_section contents. */
161 if (symbol_section != input_section)
163 if (elf_section_data (symbol_section)->this_hdr.contents != NULL)
164 contents = elf_section_data (symbol_section)->this_hdr.contents;
165 else
167 if (!bfd_malloc_and_get_section (input_bfd, symbol_section,
168 &contents))
170 free (contents);
171 return bfd_reloc_outofrange;
175 #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800)
176 start_ptr = contents + start;
177 for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;)
179 for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);)
180 ptr -= 2;
181 ptr += 2;
182 diff = (last_ptr - ptr) >> 1;
183 cum_diff += diff & 1;
184 cum_diff += diff;
186 /* Calculate the start / end values to load into rs / re minus four -
187 so that will cancel out the four we would otherwise have to add to
188 addr to get the value to subtract in order to get relative addressing. */
189 if (cum_diff >= 0)
191 start -= 4;
192 end = (ptr + cum_diff * 2) - contents;
194 else
196 bfd_vma start0 = start - 4;
198 while (start0 && IS_PPI (contents + start0))
199 start0 -= 2;
200 start0 = start - 2 - ((start - start0) & 2);
201 start = start0 - cum_diff - 2;
202 end = start0;
205 if (elf_section_data (symbol_section)->this_hdr.contents != contents)
206 free (contents);
208 insn = bfd_get_16 (input_bfd, contents + addr);
210 x = (insn & 0x200 ? end : start) - addr;
211 if (input_section != symbol_section)
212 x += ((symbol_section->output_section->vma + symbol_section->output_offset)
213 - (input_section->output_section->vma
214 + input_section->output_offset));
215 x >>= 1;
216 if (x < -128 || x > 127)
217 return bfd_reloc_overflow;
219 x = (insn & ~0xff) | (x & 0xff);
220 bfd_put_16 (input_bfd, (bfd_vma) x, contents + addr);
222 return bfd_reloc_ok;
225 /* This function is used for normal relocs. This used to be like the COFF
226 function, and is almost certainly incorrect for other ELF targets. */
228 static bfd_reloc_status_type
229 sh_elf_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in,
230 void *data, asection *input_section, bfd *output_bfd,
231 char **error_message ATTRIBUTE_UNUSED)
233 bfd_vma insn;
234 bfd_vma sym_value;
235 enum elf_sh_reloc_type r_type;
236 bfd_vma addr = reloc_entry->address;
237 bfd_size_type octets = addr * OCTETS_PER_BYTE (abfd, input_section);
238 bfd_byte *hit_data = (bfd_byte *) data + octets;
240 r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type;
242 if (output_bfd != NULL)
244 /* Partial linking--do nothing. */
245 reloc_entry->address += input_section->output_offset;
246 return bfd_reloc_ok;
249 /* Almost all relocs have to do with relaxing. If any work must be
250 done for them, it has been done in sh_relax_section. */
251 if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0)
252 return bfd_reloc_ok;
254 if (symbol_in != NULL
255 && bfd_is_und_section (symbol_in->section))
256 return bfd_reloc_undefined;
258 /* PR 17512: file: 9891ca98. */
259 if (octets + bfd_get_reloc_size (reloc_entry->howto)
260 > bfd_get_section_limit_octets (abfd, input_section))
261 return bfd_reloc_outofrange;
263 if (bfd_is_com_section (symbol_in->section))
264 sym_value = 0;
265 else
266 sym_value = (symbol_in->value +
267 symbol_in->section->output_section->vma +
268 symbol_in->section->output_offset);
270 switch (r_type)
272 case R_SH_DIR32:
273 insn = bfd_get_32 (abfd, hit_data);
274 insn += sym_value + reloc_entry->addend;
275 bfd_put_32 (abfd, insn, hit_data);
276 break;
277 case R_SH_IND12W:
278 insn = bfd_get_16 (abfd, hit_data);
279 sym_value += reloc_entry->addend;
280 sym_value -= (input_section->output_section->vma
281 + input_section->output_offset
282 + addr
283 + 4);
284 sym_value += (((insn & 0xfff) ^ 0x800) - 0x800) << 1;
285 insn = (insn & 0xf000) | ((sym_value >> 1) & 0xfff);
286 bfd_put_16 (abfd, insn, hit_data);
287 if (sym_value + 0x1000 >= 0x2000 || (sym_value & 1) != 0)
288 return bfd_reloc_overflow;
289 break;
290 default:
291 abort ();
292 break;
295 return bfd_reloc_ok;
298 /* This function is used for relocs which are only used for relaxing,
299 which the linker should otherwise ignore. */
301 static bfd_reloc_status_type
302 sh_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
303 asymbol *symbol ATTRIBUTE_UNUSED,
304 void *data ATTRIBUTE_UNUSED, asection *input_section,
305 bfd *output_bfd,
306 char **error_message ATTRIBUTE_UNUSED)
308 if (output_bfd != NULL)
309 reloc_entry->address += input_section->output_offset;
310 return bfd_reloc_ok;
313 /* This structure is used to map BFD reloc codes to SH ELF relocs. */
315 struct elf_reloc_map
317 bfd_reloc_code_real_type bfd_reloc_val;
318 unsigned char elf_reloc_val;
321 /* An array mapping BFD reloc codes to SH ELF relocs. */
323 static const struct elf_reloc_map sh_reloc_map[] =
325 { BFD_RELOC_NONE, R_SH_NONE },
326 { BFD_RELOC_32, R_SH_DIR32 },
327 { BFD_RELOC_16, R_SH_DIR16 },
328 { BFD_RELOC_8, R_SH_DIR8 },
329 { BFD_RELOC_CTOR, R_SH_DIR32 },
330 { BFD_RELOC_32_PCREL, R_SH_REL32 },
331 { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN },
332 { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W },
333 { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ },
334 { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL },
335 { BFD_RELOC_8_PCREL, R_SH_SWITCH8 },
336 { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 },
337 { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 },
338 { BFD_RELOC_SH_USES, R_SH_USES },
339 { BFD_RELOC_SH_COUNT, R_SH_COUNT },
340 { BFD_RELOC_SH_ALIGN, R_SH_ALIGN },
341 { BFD_RELOC_SH_CODE, R_SH_CODE },
342 { BFD_RELOC_SH_DATA, R_SH_DATA },
343 { BFD_RELOC_SH_LABEL, R_SH_LABEL },
344 { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT },
345 { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY },
346 { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START },
347 { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END },
348 { BFD_RELOC_SH_TLS_GD_32, R_SH_TLS_GD_32 },
349 { BFD_RELOC_SH_TLS_LD_32, R_SH_TLS_LD_32 },
350 { BFD_RELOC_SH_TLS_LDO_32, R_SH_TLS_LDO_32 },
351 { BFD_RELOC_SH_TLS_IE_32, R_SH_TLS_IE_32 },
352 { BFD_RELOC_SH_TLS_LE_32, R_SH_TLS_LE_32 },
353 { BFD_RELOC_SH_TLS_DTPMOD32, R_SH_TLS_DTPMOD32 },
354 { BFD_RELOC_SH_TLS_DTPOFF32, R_SH_TLS_DTPOFF32 },
355 { BFD_RELOC_SH_TLS_TPOFF32, R_SH_TLS_TPOFF32 },
356 { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 },
357 { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 },
358 { BFD_RELOC_SH_COPY, R_SH_COPY },
359 { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT },
360 { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT },
361 { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE },
362 { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF },
363 { BFD_RELOC_SH_GOTPC, R_SH_GOTPC },
364 { BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 },
365 { BFD_RELOC_SH_GOT20, R_SH_GOT20 },
366 { BFD_RELOC_SH_GOTOFF20, R_SH_GOTOFF20 },
367 { BFD_RELOC_SH_GOTFUNCDESC, R_SH_GOTFUNCDESC },
368 { BFD_RELOC_SH_GOTFUNCDESC20, R_SH_GOTFUNCDESC20 },
369 { BFD_RELOC_SH_GOTOFFFUNCDESC, R_SH_GOTOFFFUNCDESC },
370 { BFD_RELOC_SH_GOTOFFFUNCDESC20, R_SH_GOTOFFFUNCDESC20 },
371 { BFD_RELOC_SH_FUNCDESC, R_SH_FUNCDESC },
374 /* Given a BFD reloc code, return the howto structure for the
375 corresponding SH ELF reloc. */
377 static reloc_howto_type *
378 sh_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
380 unsigned int i;
382 for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++)
384 if (sh_reloc_map[i].bfd_reloc_val == code)
385 return get_howto_table (abfd) + (int) sh_reloc_map[i].elf_reloc_val;
388 return NULL;
391 static reloc_howto_type *
392 sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name)
394 unsigned int i;
396 if (vxworks_object_p (abfd))
398 for (i = 0;
399 i < (sizeof (sh_vxworks_howto_table)
400 / sizeof (sh_vxworks_howto_table[0]));
401 i++)
402 if (sh_vxworks_howto_table[i].name != NULL
403 && strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0)
404 return &sh_vxworks_howto_table[i];
406 else
408 for (i = 0;
409 i < (sizeof (sh_elf_howto_table)
410 / sizeof (sh_elf_howto_table[0]));
411 i++)
412 if (sh_elf_howto_table[i].name != NULL
413 && strcasecmp (sh_elf_howto_table[i].name, r_name) == 0)
414 return &sh_elf_howto_table[i];
417 return NULL;
420 /* Given an ELF reloc, fill in the howto field of a relent. */
422 static bool
423 sh_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
425 unsigned int r;
427 r = ELF32_R_TYPE (dst->r_info);
429 if (r >= R_SH_FIRST_INVALID_RELOC_6
430 || (r >= R_SH_FIRST_INVALID_RELOC && r <= R_SH_LAST_INVALID_RELOC)
431 || (r >= R_SH_FIRST_INVALID_RELOC_2 && r <= R_SH_LAST_INVALID_RELOC_2)
432 || (r >= R_SH_FIRST_INVALID_RELOC_3 && r <= R_SH_LAST_INVALID_RELOC_3)
433 || (r >= R_SH_FIRST_INVALID_RELOC_4 && r <= R_SH_LAST_INVALID_RELOC_4)
434 || (r >= R_SH_FIRST_INVALID_RELOC_5 && r <= R_SH_LAST_INVALID_RELOC_5))
436 /* xgettext:c-format */
437 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
438 abfd, r);
439 bfd_set_error (bfd_error_bad_value);
440 return false;
443 cache_ptr->howto = get_howto_table (abfd) + r;
444 return true;
447 /* This function handles relaxing for SH ELF. See the corresponding
448 function in coff-sh.c for a description of what this does. FIXME:
449 There is a lot of duplication here between this code and the COFF
450 specific code. The format of relocs and symbols is wound deeply
451 into this code, but it would still be better if the duplication
452 could be eliminated somehow. Note in particular that although both
453 functions use symbols like R_SH_CODE, those symbols have different
454 values; in coff-sh.c they come from include/coff/sh.h, whereas here
455 they come from enum elf_sh_reloc_type in include/elf/sh.h. */
457 static bool
458 sh_elf_relax_section (bfd *abfd, asection *sec,
459 struct bfd_link_info *link_info, bool *again)
461 Elf_Internal_Shdr *symtab_hdr;
462 Elf_Internal_Rela *internal_relocs;
463 bool have_code;
464 Elf_Internal_Rela *irel, *irelend;
465 bfd_byte *contents = NULL;
466 Elf_Internal_Sym *isymbuf = NULL;
468 *again = false;
470 if (bfd_link_relocatable (link_info)
471 || (sec->flags & SEC_HAS_CONTENTS) == 0
472 || (sec->flags & SEC_RELOC) == 0
473 || sec->reloc_count == 0)
474 return true;
476 symtab_hdr = &elf_symtab_hdr (abfd);
478 internal_relocs = (_bfd_elf_link_read_relocs
479 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
480 link_info->keep_memory));
481 if (internal_relocs == NULL)
482 goto error_return;
484 have_code = false;
486 irelend = internal_relocs + sec->reloc_count;
487 for (irel = internal_relocs; irel < irelend; irel++)
489 bfd_vma laddr, paddr, symval;
490 unsigned short insn;
491 Elf_Internal_Rela *irelfn, *irelscan, *irelcount;
492 bfd_signed_vma foff;
494 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE)
495 have_code = true;
497 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES)
498 continue;
500 /* Get the section contents. */
501 if (contents == NULL)
503 if (elf_section_data (sec)->this_hdr.contents != NULL)
504 contents = elf_section_data (sec)->this_hdr.contents;
505 else
507 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
508 goto error_return;
512 /* The r_addend field of the R_SH_USES reloc will point us to
513 the register load. The 4 is because the r_addend field is
514 computed as though it were a jump offset, which are based
515 from 4 bytes after the jump instruction. */
516 laddr = irel->r_offset + 4 + irel->r_addend;
517 if (laddr >= sec->size)
519 /* xgettext:c-format */
520 _bfd_error_handler
521 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES offset"),
522 abfd, (uint64_t) irel->r_offset);
523 continue;
525 insn = bfd_get_16 (abfd, contents + laddr);
527 /* If the instruction is not mov.l NN,rN, we don't know what to
528 do. */
529 if ((insn & 0xf000) != 0xd000)
531 _bfd_error_handler
532 /* xgettext:c-format */
533 (_("%pB: %#" PRIx64 ": warning: "
534 "R_SH_USES points to unrecognized insn 0x%x"),
535 abfd, (uint64_t) irel->r_offset, insn);
536 continue;
539 /* Get the address from which the register is being loaded. The
540 displacement in the mov.l instruction is quadrupled. It is a
541 displacement from four bytes after the movl instruction, but,
542 before adding in the PC address, two least significant bits
543 of the PC are cleared. We assume that the section is aligned
544 on a four byte boundary. */
545 paddr = insn & 0xff;
546 paddr *= 4;
547 paddr += (laddr + 4) &~ (bfd_vma) 3;
548 if (paddr >= sec->size)
550 _bfd_error_handler
551 /* xgettext:c-format */
552 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES load offset"),
553 abfd, (uint64_t) irel->r_offset);
554 continue;
557 /* Get the reloc for the address from which the register is
558 being loaded. This reloc will tell us which function is
559 actually being called. */
560 for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
561 if (irelfn->r_offset == paddr
562 && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32)
563 break;
564 if (irelfn >= irelend)
566 _bfd_error_handler
567 /* xgettext:c-format */
568 (_("%pB: %#" PRIx64 ": warning: could not find expected reloc"),
569 abfd, (uint64_t) paddr);
570 continue;
573 /* Read this BFD's symbols if we haven't done so already. */
574 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
576 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
577 if (isymbuf == NULL)
578 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
579 symtab_hdr->sh_info, 0,
580 NULL, NULL, NULL);
581 if (isymbuf == NULL)
582 goto error_return;
585 /* Get the value of the symbol referred to by the reloc. */
586 if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
588 /* A local symbol. */
589 Elf_Internal_Sym *isym;
591 isym = isymbuf + ELF32_R_SYM (irelfn->r_info);
592 if (isym->st_shndx
593 != (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec))
595 _bfd_error_handler
596 /* xgettext:c-format */
597 (_("%pB: %#" PRIx64 ": warning: symbol in unexpected section"),
598 abfd, (uint64_t) paddr);
599 continue;
602 symval = (isym->st_value
603 + sec->output_section->vma
604 + sec->output_offset);
606 else
608 unsigned long indx;
609 struct elf_link_hash_entry *h;
611 indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info;
612 h = elf_sym_hashes (abfd)[indx];
613 BFD_ASSERT (h != NULL);
614 if (h->root.type != bfd_link_hash_defined
615 && h->root.type != bfd_link_hash_defweak)
617 /* This appears to be a reference to an undefined
618 symbol. Just ignore it--it will be caught by the
619 regular reloc processing. */
620 continue;
623 symval = (h->root.u.def.value
624 + h->root.u.def.section->output_section->vma
625 + h->root.u.def.section->output_offset);
628 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
629 symval += bfd_get_32 (abfd, contents + paddr);
630 else
631 symval += irelfn->r_addend;
633 /* See if this function call can be shortened. */
634 foff = (symval
635 - (irel->r_offset
636 + sec->output_section->vma
637 + sec->output_offset
638 + 4));
639 /* A branch to an address beyond ours might be increased by an
640 .align that doesn't move when bytes behind us are deleted.
641 So, we add some slop in this calculation to allow for
642 that. */
643 if (foff < -0x1000 || foff >= 0x1000 - 8)
645 /* After all that work, we can't shorten this function call. */
646 continue;
649 /* Shorten the function call. */
651 /* For simplicity of coding, we are going to modify the section
652 contents, the section relocs, and the BFD symbol table. We
653 must tell the rest of the code not to free up this
654 information. It would be possible to instead create a table
655 of changes which have to be made, as is done in coff-mips.c;
656 that would be more work, but would require less memory when
657 the linker is run. */
659 elf_section_data (sec)->relocs = internal_relocs;
660 elf_section_data (sec)->this_hdr.contents = contents;
661 symtab_hdr->contents = (unsigned char *) isymbuf;
663 /* Replace the jmp/jsr with a bra/bsr. */
665 /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
666 replace the jmp/jsr with a bra/bsr. */
667 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W);
668 /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
669 here, but that only checks if the symbol is an external symbol,
670 not if the symbol is in a different section. Besides, we need
671 a consistent meaning for the relocation, so we just assume here that
672 the value of the symbol is not available. */
674 /* We can't fully resolve this yet, because the external
675 symbol value may be changed by future relaxing. We let
676 the final link phase handle it. */
677 if (bfd_get_16 (abfd, contents + irel->r_offset) & 0x0020)
678 bfd_put_16 (abfd, (bfd_vma) 0xa000, contents + irel->r_offset);
679 else
680 bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
682 irel->r_addend = -4;
684 /* When we calculated the symbol "value" we had an offset in the
685 DIR32's word in memory (we read and add it above). However,
686 the jsr we create does NOT have this offset encoded, so we
687 have to add it to the addend to preserve it. */
688 irel->r_addend += bfd_get_32 (abfd, contents + paddr);
690 /* See if there is another R_SH_USES reloc referring to the same
691 register load. */
692 for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
693 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES
694 && laddr == irelscan->r_offset + 4 + irelscan->r_addend)
695 break;
696 if (irelscan < irelend)
698 /* Some other function call depends upon this register load,
699 and we have not yet converted that function call.
700 Indeed, we may never be able to convert it. There is
701 nothing else we can do at this point. */
702 continue;
705 /* Look for a R_SH_COUNT reloc on the location where the
706 function address is stored. Do this before deleting any
707 bytes, to avoid confusion about the address. */
708 for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
709 if (irelcount->r_offset == paddr
710 && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT)
711 break;
713 /* Delete the register load. */
714 if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2))
715 goto error_return;
717 /* That will change things, so, just in case it permits some
718 other function call to come within range, we should relax
719 again. Note that this is not required, and it may be slow. */
720 *again = true;
722 /* Now check whether we got a COUNT reloc. */
723 if (irelcount >= irelend)
725 _bfd_error_handler
726 /* xgettext:c-format */
727 (_("%pB: %#" PRIx64 ": warning: "
728 "could not find expected COUNT reloc"),
729 abfd, (uint64_t) paddr);
730 continue;
733 /* The number of uses is stored in the r_addend field. We've
734 just deleted one. */
735 if (irelcount->r_addend == 0)
737 /* xgettext:c-format */
738 _bfd_error_handler (_("%pB: %#" PRIx64 ": warning: bad count"),
739 abfd, (uint64_t) paddr);
740 continue;
743 --irelcount->r_addend;
745 /* If there are no more uses, we can delete the address. Reload
746 the address from irelfn, in case it was changed by the
747 previous call to sh_elf_relax_delete_bytes. */
748 if (irelcount->r_addend == 0)
750 if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4))
751 goto error_return;
754 /* We've done all we can with that function call. */
757 /* Look for load and store instructions that we can align on four
758 byte boundaries. */
759 if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4
760 && have_code)
762 bool swapped;
764 /* Get the section contents. */
765 if (contents == NULL)
767 if (elf_section_data (sec)->this_hdr.contents != NULL)
768 contents = elf_section_data (sec)->this_hdr.contents;
769 else
771 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
772 goto error_return;
776 if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents,
777 &swapped))
778 goto error_return;
780 if (swapped)
782 elf_section_data (sec)->relocs = internal_relocs;
783 elf_section_data (sec)->this_hdr.contents = contents;
784 symtab_hdr->contents = (unsigned char *) isymbuf;
788 if (isymbuf != NULL
789 && symtab_hdr->contents != (unsigned char *) isymbuf)
791 if (! link_info->keep_memory)
792 free (isymbuf);
793 else
795 /* Cache the symbols for elf_link_input_bfd. */
796 symtab_hdr->contents = (unsigned char *) isymbuf;
800 if (contents != NULL
801 && elf_section_data (sec)->this_hdr.contents != contents)
803 if (! link_info->keep_memory)
804 free (contents);
805 else
807 /* Cache the section contents for elf_link_input_bfd. */
808 elf_section_data (sec)->this_hdr.contents = contents;
812 if (elf_section_data (sec)->relocs != internal_relocs)
813 free (internal_relocs);
815 return true;
817 error_return:
818 if (symtab_hdr->contents != (unsigned char *) isymbuf)
819 free (isymbuf);
820 if (elf_section_data (sec)->this_hdr.contents != contents)
821 free (contents);
822 if (elf_section_data (sec)->relocs != internal_relocs)
823 free (internal_relocs);
825 return false;
828 /* Delete some bytes from a section while relaxing. FIXME: There is a
829 lot of duplication between this function and sh_relax_delete_bytes
830 in coff-sh.c. */
832 static bool
833 sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr,
834 int count)
836 Elf_Internal_Shdr *symtab_hdr;
837 unsigned int sec_shndx;
838 bfd_byte *contents;
839 Elf_Internal_Rela *irel, *irelend;
840 Elf_Internal_Rela *irelalign;
841 bfd_vma toaddr;
842 Elf_Internal_Sym *isymbuf, *isym, *isymend;
843 struct elf_link_hash_entry **sym_hashes;
844 struct elf_link_hash_entry **end_hashes;
845 unsigned int symcount;
846 asection *o;
848 symtab_hdr = &elf_symtab_hdr (abfd);
849 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
851 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
853 contents = elf_section_data (sec)->this_hdr.contents;
855 /* The deletion must stop at the next ALIGN reloc for an alignment
856 power larger than the number of bytes we are deleting. */
858 irelalign = NULL;
859 toaddr = sec->size;
861 irel = elf_section_data (sec)->relocs;
862 irelend = irel + sec->reloc_count;
863 for (; irel < irelend; irel++)
865 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
866 && irel->r_offset > addr
867 && count < (1 << irel->r_addend))
869 irelalign = irel;
870 toaddr = irel->r_offset;
871 break;
875 /* Actually delete the bytes. */
876 memmove (contents + addr, contents + addr + count,
877 (size_t) (toaddr - addr - count));
878 if (irelalign == NULL)
879 sec->size -= count;
880 else
882 int i;
884 #define NOP_OPCODE (0x0009)
886 BFD_ASSERT ((count & 1) == 0);
887 for (i = 0; i < count; i += 2)
888 bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
891 /* Adjust all the relocs. */
892 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
894 bfd_vma nraddr, stop;
895 bfd_vma start = 0;
896 int insn = 0;
897 int off, adjust, oinsn;
898 bfd_signed_vma voff = 0;
899 bool overflow;
901 /* Get the new reloc address. */
902 nraddr = irel->r_offset;
903 if ((irel->r_offset > addr
904 && irel->r_offset < toaddr)
905 || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
906 && irel->r_offset == toaddr))
907 nraddr -= count;
909 /* See if this reloc was for the bytes we have deleted, in which
910 case we no longer care about it. Don't delete relocs which
911 represent addresses, though. */
912 if (irel->r_offset >= addr
913 && irel->r_offset < addr + count
914 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN
915 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE
916 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA
917 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL)
918 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
919 (int) R_SH_NONE);
921 /* If this is a PC relative reloc, see if the range it covers
922 includes the bytes we have deleted. */
923 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
925 default:
926 break;
928 case R_SH_DIR8WPN:
929 case R_SH_IND12W:
930 case R_SH_DIR8WPZ:
931 case R_SH_DIR8WPL:
932 start = irel->r_offset;
933 insn = bfd_get_16 (abfd, contents + nraddr);
934 break;
937 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
939 default:
940 start = stop = addr;
941 break;
943 case R_SH_DIR32:
944 /* If this reloc is against a symbol defined in this
945 section, and the symbol will not be adjusted below, we
946 must check the addend to see it will put the value in
947 range to be adjusted, and hence must be changed. */
948 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
950 isym = isymbuf + ELF32_R_SYM (irel->r_info);
951 if (isym->st_shndx == sec_shndx
952 && (isym->st_value <= addr
953 || isym->st_value >= toaddr))
955 bfd_vma val;
957 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
959 val = bfd_get_32 (abfd, contents + nraddr);
960 val += isym->st_value;
961 if (val > addr && val < toaddr)
962 bfd_put_32 (abfd, val - count, contents + nraddr);
964 else
966 val = isym->st_value + irel->r_addend;
967 if (val > addr && val < toaddr)
968 irel->r_addend -= count;
972 start = stop = addr;
973 break;
975 case R_SH_DIR8WPN:
976 off = insn & 0xff;
977 if (off & 0x80)
978 off -= 0x100;
979 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
980 break;
982 case R_SH_IND12W:
983 off = insn & 0xfff;
984 if (! off)
986 /* This has been made by previous relaxation. Since the
987 relocation will be against an external symbol, the
988 final relocation will just do the right thing. */
989 start = stop = addr;
991 else
993 if (off & 0x800)
994 off -= 0x1000;
995 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
997 /* The addend will be against the section symbol, thus
998 for adjusting the addend, the relevant start is the
999 start of the section.
1000 N.B. If we want to abandon in-place changes here and
1001 test directly using symbol + addend, we have to take into
1002 account that the addend has already been adjusted by -4. */
1003 if (stop > addr && stop < toaddr)
1004 irel->r_addend -= count;
1006 break;
1008 case R_SH_DIR8WPZ:
1009 off = insn & 0xff;
1010 stop = start + 4 + off * 2;
1011 break;
1013 case R_SH_DIR8WPL:
1014 off = insn & 0xff;
1015 stop = (start & ~(bfd_vma) 3) + 4 + off * 4;
1016 break;
1018 case R_SH_SWITCH8:
1019 case R_SH_SWITCH16:
1020 case R_SH_SWITCH32:
1021 /* These relocs types represent
1022 .word L2-L1
1023 The r_addend field holds the difference between the reloc
1024 address and L1. That is the start of the reloc, and
1025 adding in the contents gives us the top. We must adjust
1026 both the r_offset field and the section contents.
1027 N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1028 and the elf bfd r_offset is called r_vaddr. */
1030 stop = irel->r_offset;
1031 start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend);
1033 if (start > addr
1034 && start < toaddr
1035 && (stop <= addr || stop >= toaddr))
1036 irel->r_addend += count;
1037 else if (stop > addr
1038 && stop < toaddr
1039 && (start <= addr || start >= toaddr))
1040 irel->r_addend -= count;
1042 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16)
1043 voff = bfd_get_signed_16 (abfd, contents + nraddr);
1044 else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8)
1045 voff = bfd_get_8 (abfd, contents + nraddr);
1046 else
1047 voff = bfd_get_signed_32 (abfd, contents + nraddr);
1048 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1050 break;
1052 case R_SH_USES:
1053 start = irel->r_offset;
1054 stop = (bfd_vma) ((bfd_signed_vma) start
1055 + (long) irel->r_addend
1056 + 4);
1057 break;
1060 if (start > addr
1061 && start < toaddr
1062 && (stop <= addr || stop >= toaddr))
1063 adjust = count;
1064 else if (stop > addr
1065 && stop < toaddr
1066 && (start <= addr || start >= toaddr))
1067 adjust = - count;
1068 else
1069 adjust = 0;
1071 if (adjust != 0)
1073 oinsn = insn;
1074 overflow = false;
1075 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
1077 default:
1078 abort ();
1079 break;
1081 case R_SH_DIR8WPN:
1082 case R_SH_DIR8WPZ:
1083 insn += adjust / 2;
1084 if ((oinsn & 0xff00) != (insn & 0xff00))
1085 overflow = true;
1086 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1087 break;
1089 case R_SH_IND12W:
1090 insn += adjust / 2;
1091 if ((oinsn & 0xf000) != (insn & 0xf000))
1092 overflow = true;
1093 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1094 break;
1096 case R_SH_DIR8WPL:
1097 BFD_ASSERT (adjust == count || count >= 4);
1098 if (count >= 4)
1099 insn += adjust / 4;
1100 else
1102 if ((irel->r_offset & 3) == 0)
1103 ++insn;
1105 if ((oinsn & 0xff00) != (insn & 0xff00))
1106 overflow = true;
1107 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1108 break;
1110 case R_SH_SWITCH8:
1111 voff += adjust;
1112 if (voff < 0 || voff >= 0xff)
1113 overflow = true;
1114 bfd_put_8 (abfd, voff, contents + nraddr);
1115 break;
1117 case R_SH_SWITCH16:
1118 voff += adjust;
1119 if (voff < - 0x8000 || voff >= 0x8000)
1120 overflow = true;
1121 bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr);
1122 break;
1124 case R_SH_SWITCH32:
1125 voff += adjust;
1126 bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr);
1127 break;
1129 case R_SH_USES:
1130 irel->r_addend += adjust;
1131 break;
1134 if (overflow)
1136 _bfd_error_handler
1137 /* xgettext:c-format */
1138 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1139 abfd, (uint64_t) irel->r_offset);
1140 bfd_set_error (bfd_error_bad_value);
1141 return false;
1145 irel->r_offset = nraddr;
1148 /* Look through all the other sections. If there contain any IMM32
1149 relocs against internal symbols which we are not going to adjust
1150 below, we may need to adjust the addends. */
1151 for (o = abfd->sections; o != NULL; o = o->next)
1153 Elf_Internal_Rela *internal_relocs;
1154 Elf_Internal_Rela *irelscan, *irelscanend;
1155 bfd_byte *ocontents;
1157 if (o == sec
1158 || (o->flags & SEC_HAS_CONTENTS) == 0
1159 || (o->flags & SEC_RELOC) == 0
1160 || o->reloc_count == 0)
1161 continue;
1163 /* We always cache the relocs. Perhaps, if info->keep_memory is
1164 FALSE, we should free them, if we are permitted to, when we
1165 leave sh_coff_relax_section. */
1166 internal_relocs = (_bfd_elf_link_read_relocs
1167 (abfd, o, NULL, (Elf_Internal_Rela *) NULL, true));
1168 if (internal_relocs == NULL)
1169 return false;
1171 ocontents = NULL;
1172 irelscanend = internal_relocs + o->reloc_count;
1173 for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
1175 /* Dwarf line numbers use R_SH_SWITCH32 relocs. */
1176 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32)
1178 bfd_vma start, stop;
1179 bfd_signed_vma voff;
1181 if (ocontents == NULL)
1183 if (elf_section_data (o)->this_hdr.contents != NULL)
1184 ocontents = elf_section_data (o)->this_hdr.contents;
1185 else
1187 /* We always cache the section contents.
1188 Perhaps, if info->keep_memory is FALSE, we
1189 should free them, if we are permitted to,
1190 when we leave sh_coff_relax_section. */
1191 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1193 free (ocontents);
1194 return false;
1197 elf_section_data (o)->this_hdr.contents = ocontents;
1201 stop = irelscan->r_offset;
1202 start
1203 = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend);
1205 /* STOP is in a different section, so it won't change. */
1206 if (start > addr && start < toaddr)
1207 irelscan->r_addend += count;
1209 voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset);
1210 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1212 if (start > addr
1213 && start < toaddr
1214 && (stop <= addr || stop >= toaddr))
1215 bfd_put_signed_32 (abfd, (bfd_vma) voff + count,
1216 ocontents + irelscan->r_offset);
1217 else if (stop > addr
1218 && stop < toaddr
1219 && (start <= addr || start >= toaddr))
1220 bfd_put_signed_32 (abfd, (bfd_vma) voff - count,
1221 ocontents + irelscan->r_offset);
1224 if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32)
1225 continue;
1227 if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info)
1228 continue;
1231 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1232 if (isym->st_shndx == sec_shndx
1233 && (isym->st_value <= addr
1234 || isym->st_value >= toaddr))
1236 bfd_vma val;
1238 if (ocontents == NULL)
1240 if (elf_section_data (o)->this_hdr.contents != NULL)
1241 ocontents = elf_section_data (o)->this_hdr.contents;
1242 else
1244 /* We always cache the section contents.
1245 Perhaps, if info->keep_memory is FALSE, we
1246 should free them, if we are permitted to,
1247 when we leave sh_coff_relax_section. */
1248 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1250 free (ocontents);
1251 return false;
1254 elf_section_data (o)->this_hdr.contents = ocontents;
1258 val = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
1259 val += isym->st_value;
1260 if (val > addr && val < toaddr)
1261 bfd_put_32 (abfd, val - count,
1262 ocontents + irelscan->r_offset);
1267 /* Adjust the local symbols defined in this section. */
1268 isymend = isymbuf + symtab_hdr->sh_info;
1269 for (isym = isymbuf; isym < isymend; isym++)
1271 if (isym->st_shndx == sec_shndx
1272 && isym->st_value > addr
1273 && isym->st_value < toaddr)
1274 isym->st_value -= count;
1277 /* Now adjust the global symbols defined in this section. */
1278 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1279 - symtab_hdr->sh_info);
1280 sym_hashes = elf_sym_hashes (abfd);
1281 end_hashes = sym_hashes + symcount;
1282 for (; sym_hashes < end_hashes; sym_hashes++)
1284 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1285 if ((sym_hash->root.type == bfd_link_hash_defined
1286 || sym_hash->root.type == bfd_link_hash_defweak)
1287 && sym_hash->root.u.def.section == sec
1288 && sym_hash->root.u.def.value > addr
1289 && sym_hash->root.u.def.value < toaddr)
1291 sym_hash->root.u.def.value -= count;
1295 /* See if we can move the ALIGN reloc forward. We have adjusted
1296 r_offset for it already. */
1297 if (irelalign != NULL)
1299 bfd_vma alignto, alignaddr;
1301 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
1302 alignaddr = BFD_ALIGN (irelalign->r_offset,
1303 1 << irelalign->r_addend);
1304 if (alignto != alignaddr)
1306 /* Tail recursion. */
1307 return sh_elf_relax_delete_bytes (abfd, sec, alignaddr,
1308 (int) (alignto - alignaddr));
1312 return true;
1315 /* Look for loads and stores which we can align to four byte
1316 boundaries. This is like sh_align_loads in coff-sh.c. */
1318 static bool
1319 sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1320 Elf_Internal_Rela *internal_relocs,
1321 bfd_byte *contents ATTRIBUTE_UNUSED,
1322 bool *pswapped)
1324 Elf_Internal_Rela *irel, *irelend;
1325 bfd_vma *labels = NULL;
1326 bfd_vma *label, *label_end;
1327 bfd_size_type amt;
1329 *pswapped = false;
1331 irelend = internal_relocs + sec->reloc_count;
1333 /* Get all the addresses with labels on them. */
1334 amt = sec->reloc_count;
1335 amt *= sizeof (bfd_vma);
1336 labels = (bfd_vma *) bfd_malloc (amt);
1337 if (labels == NULL)
1338 goto error_return;
1339 label_end = labels;
1340 for (irel = internal_relocs; irel < irelend; irel++)
1342 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL)
1344 *label_end = irel->r_offset;
1345 ++label_end;
1349 /* Note that the assembler currently always outputs relocs in
1350 address order. If that ever changes, this code will need to sort
1351 the label values and the relocs. */
1353 label = labels;
1355 for (irel = internal_relocs; irel < irelend; irel++)
1357 bfd_vma start, stop;
1359 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE)
1360 continue;
1362 start = irel->r_offset;
1364 for (irel++; irel < irelend; irel++)
1365 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA)
1366 break;
1367 if (irel < irelend)
1368 stop = irel->r_offset;
1369 else
1370 stop = sec->size;
1372 if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns,
1373 internal_relocs, &label,
1374 label_end, start, stop, pswapped))
1375 goto error_return;
1378 free (labels);
1380 return true;
1382 error_return:
1383 free (labels);
1384 return false;
1387 /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */
1389 static bool
1390 sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs,
1391 bfd_byte *contents, bfd_vma addr)
1393 Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs;
1394 unsigned short i1, i2;
1395 Elf_Internal_Rela *irel, *irelend;
1397 /* Swap the instructions themselves. */
1398 i1 = bfd_get_16 (abfd, contents + addr);
1399 i2 = bfd_get_16 (abfd, contents + addr + 2);
1400 bfd_put_16 (abfd, (bfd_vma) i2, contents + addr);
1401 bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2);
1403 /* Adjust all reloc addresses. */
1404 irelend = internal_relocs + sec->reloc_count;
1405 for (irel = internal_relocs; irel < irelend; irel++)
1407 enum elf_sh_reloc_type type;
1408 int add;
1410 /* There are a few special types of relocs that we don't want to
1411 adjust. These relocs do not apply to the instruction itself,
1412 but are only associated with the address. */
1413 type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info);
1414 if (type == R_SH_ALIGN
1415 || type == R_SH_CODE
1416 || type == R_SH_DATA
1417 || type == R_SH_LABEL)
1418 continue;
1420 /* If an R_SH_USES reloc points to one of the addresses being
1421 swapped, we must adjust it. It would be incorrect to do this
1422 for a jump, though, since we want to execute both
1423 instructions after the jump. (We have avoided swapping
1424 around a label, so the jump will not wind up executing an
1425 instruction it shouldn't). */
1426 if (type == R_SH_USES)
1428 bfd_vma off;
1430 off = irel->r_offset + 4 + irel->r_addend;
1431 if (off == addr)
1432 irel->r_offset += 2;
1433 else if (off == addr + 2)
1434 irel->r_offset -= 2;
1437 if (irel->r_offset == addr)
1439 irel->r_offset += 2;
1440 add = -2;
1442 else if (irel->r_offset == addr + 2)
1444 irel->r_offset -= 2;
1445 add = 2;
1447 else
1448 add = 0;
1450 if (add != 0)
1452 bfd_byte *loc;
1453 unsigned short insn, oinsn;
1454 bool overflow;
1456 loc = contents + irel->r_offset;
1457 overflow = false;
1458 switch (type)
1460 default:
1461 break;
1463 case R_SH_DIR8WPN:
1464 case R_SH_DIR8WPZ:
1465 insn = bfd_get_16 (abfd, loc);
1466 oinsn = insn;
1467 insn += add / 2;
1468 if ((oinsn & 0xff00) != (insn & 0xff00))
1469 overflow = true;
1470 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1471 break;
1473 case R_SH_IND12W:
1474 insn = bfd_get_16 (abfd, loc);
1475 oinsn = insn;
1476 insn += add / 2;
1477 if ((oinsn & 0xf000) != (insn & 0xf000))
1478 overflow = true;
1479 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1480 break;
1482 case R_SH_DIR8WPL:
1483 /* This reloc ignores the least significant 3 bits of
1484 the program counter before adding in the offset.
1485 This means that if ADDR is at an even address, the
1486 swap will not affect the offset. If ADDR is an at an
1487 odd address, then the instruction will be crossing a
1488 four byte boundary, and must be adjusted. */
1489 if ((addr & 3) != 0)
1491 insn = bfd_get_16 (abfd, loc);
1492 oinsn = insn;
1493 insn += add / 2;
1494 if ((oinsn & 0xff00) != (insn & 0xff00))
1495 overflow = true;
1496 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1499 break;
1502 if (overflow)
1504 _bfd_error_handler
1505 /* xgettext:c-format */
1506 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1507 abfd, (uint64_t) irel->r_offset);
1508 bfd_set_error (bfd_error_bad_value);
1509 return false;
1514 return true;
1517 /* Describes one of the various PLT styles. */
1519 struct elf_sh_plt_info
1521 /* The template for the first PLT entry, or NULL if there is no special
1522 first entry. */
1523 const bfd_byte *plt0_entry;
1525 /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */
1526 bfd_vma plt0_entry_size;
1528 /* Index I is the offset into PLT0_ENTRY of a pointer to
1529 _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE
1530 if there is no such pointer. */
1531 bfd_vma plt0_got_fields[3];
1533 /* The template for a symbol's PLT entry. */
1534 const bfd_byte *symbol_entry;
1536 /* The size of SYMBOL_ENTRY in bytes. */
1537 bfd_vma symbol_entry_size;
1539 /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used
1540 on all targets. The comments by each member indicate the value
1541 that the field must hold. */
1542 struct {
1543 bfd_vma got_entry; /* the address of the symbol's .got.plt entry */
1544 bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */
1545 bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */
1546 bool got20; /* TRUE if got_entry points to a movi20 instruction
1547 (instead of a constant pool entry). */
1548 } symbol_fields;
1550 /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
1551 bfd_vma symbol_resolve_offset;
1553 /* A different PLT layout which can be used for the first
1554 MAX_SHORT_PLT entries. It must share the same plt0. NULL in
1555 other cases. */
1556 const struct elf_sh_plt_info *short_plt;
1559 /* The size in bytes of an entry in the procedure linkage table. */
1561 #define ELF_PLT_ENTRY_SIZE 28
1563 /* First entry in an absolute procedure linkage table look like this. */
1565 /* Note - this code has been "optimised" not to use r2. r2 is used by
1566 GCC to return the address of large structures, so it should not be
1567 corrupted here. This does mean however, that this PLT does not conform
1568 to the SH PIC ABI. That spec says that r0 contains the type of the PLT
1569 and r2 contains the GOT id. This version stores the GOT id in r0 and
1570 ignores the type. Loaders can easily detect this difference however,
1571 since the type will always be 0 or 8, and the GOT ids will always be
1572 greater than or equal to 12. */
1573 static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1575 0xd0, 0x05, /* mov.l 2f,r0 */
1576 0x60, 0x02, /* mov.l @r0,r0 */
1577 0x2f, 0x06, /* mov.l r0,@-r15 */
1578 0xd0, 0x03, /* mov.l 1f,r0 */
1579 0x60, 0x02, /* mov.l @r0,r0 */
1580 0x40, 0x2b, /* jmp @r0 */
1581 0x60, 0xf6, /* mov.l @r15+,r0 */
1582 0x00, 0x09, /* nop */
1583 0x00, 0x09, /* nop */
1584 0x00, 0x09, /* nop */
1585 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1586 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1589 static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1591 0x05, 0xd0, /* mov.l 2f,r0 */
1592 0x02, 0x60, /* mov.l @r0,r0 */
1593 0x06, 0x2f, /* mov.l r0,@-r15 */
1594 0x03, 0xd0, /* mov.l 1f,r0 */
1595 0x02, 0x60, /* mov.l @r0,r0 */
1596 0x2b, 0x40, /* jmp @r0 */
1597 0xf6, 0x60, /* mov.l @r15+,r0 */
1598 0x09, 0x00, /* nop */
1599 0x09, 0x00, /* nop */
1600 0x09, 0x00, /* nop */
1601 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1602 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1605 /* Sebsequent entries in an absolute procedure linkage table look like
1606 this. */
1608 static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1610 0xd0, 0x04, /* mov.l 1f,r0 */
1611 0x60, 0x02, /* mov.l @(r0,r12),r0 */
1612 0xd1, 0x02, /* mov.l 0f,r1 */
1613 0x40, 0x2b, /* jmp @r0 */
1614 0x60, 0x13, /* mov r1,r0 */
1615 0xd1, 0x03, /* mov.l 2f,r1 */
1616 0x40, 0x2b, /* jmp @r0 */
1617 0x00, 0x09, /* nop */
1618 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1619 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1620 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1623 static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1625 0x04, 0xd0, /* mov.l 1f,r0 */
1626 0x02, 0x60, /* mov.l @r0,r0 */
1627 0x02, 0xd1, /* mov.l 0f,r1 */
1628 0x2b, 0x40, /* jmp @r0 */
1629 0x13, 0x60, /* mov r1,r0 */
1630 0x03, 0xd1, /* mov.l 2f,r1 */
1631 0x2b, 0x40, /* jmp @r0 */
1632 0x09, 0x00, /* nop */
1633 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1634 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1635 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1638 /* Entries in a PIC procedure linkage table look like this. */
1640 static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1642 0xd0, 0x04, /* mov.l 1f,r0 */
1643 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1644 0x40, 0x2b, /* jmp @r0 */
1645 0x00, 0x09, /* nop */
1646 0x50, 0xc2, /* mov.l @(8,r12),r0 */
1647 0xd1, 0x03, /* mov.l 2f,r1 */
1648 0x40, 0x2b, /* jmp @r0 */
1649 0x50, 0xc1, /* mov.l @(4,r12),r0 */
1650 0x00, 0x09, /* nop */
1651 0x00, 0x09, /* nop */
1652 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1653 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1656 static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1658 0x04, 0xd0, /* mov.l 1f,r0 */
1659 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1660 0x2b, 0x40, /* jmp @r0 */
1661 0x09, 0x00, /* nop */
1662 0xc2, 0x50, /* mov.l @(8,r12),r0 */
1663 0x03, 0xd1, /* mov.l 2f,r1 */
1664 0x2b, 0x40, /* jmp @r0 */
1665 0xc1, 0x50, /* mov.l @(4,r12),r0 */
1666 0x09, 0x00, /* nop */
1667 0x09, 0x00, /* nop */
1668 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1669 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1672 static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1675 /* Big-endian non-PIC. */
1676 elf_sh_plt0_entry_be,
1677 ELF_PLT_ENTRY_SIZE,
1678 { MINUS_ONE, 24, 20 },
1679 elf_sh_plt_entry_be,
1680 ELF_PLT_ENTRY_SIZE,
1681 { 20, 16, 24, false },
1683 NULL
1686 /* Little-endian non-PIC. */
1687 elf_sh_plt0_entry_le,
1688 ELF_PLT_ENTRY_SIZE,
1689 { MINUS_ONE, 24, 20 },
1690 elf_sh_plt_entry_le,
1691 ELF_PLT_ENTRY_SIZE,
1692 { 20, 16, 24, false },
1694 NULL
1699 /* Big-endian PIC. */
1700 elf_sh_plt0_entry_be,
1701 ELF_PLT_ENTRY_SIZE,
1702 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1703 elf_sh_pic_plt_entry_be,
1704 ELF_PLT_ENTRY_SIZE,
1705 { 20, MINUS_ONE, 24, false },
1707 NULL
1710 /* Little-endian PIC. */
1711 elf_sh_plt0_entry_le,
1712 ELF_PLT_ENTRY_SIZE,
1713 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1714 elf_sh_pic_plt_entry_le,
1715 ELF_PLT_ENTRY_SIZE,
1716 { 20, MINUS_ONE, 24, false },
1718 NULL
1723 #define VXWORKS_PLT_HEADER_SIZE 12
1724 #define VXWORKS_PLT_ENTRY_SIZE 24
1726 static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] =
1728 0xd1, 0x01, /* mov.l @(8,pc),r1 */
1729 0x61, 0x12, /* mov.l @r1,r1 */
1730 0x41, 0x2b, /* jmp @r1 */
1731 0x00, 0x09, /* nop */
1732 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1735 static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] =
1737 0x01, 0xd1, /* mov.l @(8,pc),r1 */
1738 0x12, 0x61, /* mov.l @r1,r1 */
1739 0x2b, 0x41, /* jmp @r1 */
1740 0x09, 0x00, /* nop */
1741 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1744 static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1746 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1747 0x60, 0x02, /* mov.l @r0,r0 */
1748 0x40, 0x2b, /* jmp @r0 */
1749 0x00, 0x09, /* nop */
1750 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1751 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1752 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */
1753 0x00, 0x09, /* nop */
1754 0x00, 0x09, /* nop */
1755 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1758 static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1760 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1761 0x02, 0x60, /* mov.l @r0,r0 */
1762 0x2b, 0x40, /* jmp @r0 */
1763 0x09, 0x00, /* nop */
1764 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1765 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1766 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */
1767 0x09, 0x00, /* nop */
1768 0x09, 0x00, /* nop */
1769 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1772 static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1774 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1775 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1776 0x40, 0x2b, /* jmp @r0 */
1777 0x00, 0x09, /* nop */
1778 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1779 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1780 0x51, 0xc2, /* mov.l @(8,r12),r1 */
1781 0x41, 0x2b, /* jmp @r1 */
1782 0x00, 0x09, /* nop */
1783 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1786 static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1788 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1789 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1790 0x2b, 0x40, /* jmp @r0 */
1791 0x09, 0x00, /* nop */
1792 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1793 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1794 0xc2, 0x51, /* mov.l @(8,r12),r1 */
1795 0x2b, 0x41, /* jmp @r1 */
1796 0x09, 0x00, /* nop */
1797 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1800 static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = {
1803 /* Big-endian non-PIC. */
1804 vxworks_sh_plt0_entry_be,
1805 VXWORKS_PLT_HEADER_SIZE,
1806 { MINUS_ONE, MINUS_ONE, 8 },
1807 vxworks_sh_plt_entry_be,
1808 VXWORKS_PLT_ENTRY_SIZE,
1809 { 8, 14, 20, false },
1811 NULL
1814 /* Little-endian non-PIC. */
1815 vxworks_sh_plt0_entry_le,
1816 VXWORKS_PLT_HEADER_SIZE,
1817 { MINUS_ONE, MINUS_ONE, 8 },
1818 vxworks_sh_plt_entry_le,
1819 VXWORKS_PLT_ENTRY_SIZE,
1820 { 8, 14, 20, false },
1822 NULL
1827 /* Big-endian PIC. */
1828 NULL,
1830 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1831 vxworks_sh_pic_plt_entry_be,
1832 VXWORKS_PLT_ENTRY_SIZE,
1833 { 8, MINUS_ONE, 20, false },
1835 NULL
1838 /* Little-endian PIC. */
1839 NULL,
1841 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1842 vxworks_sh_pic_plt_entry_le,
1843 VXWORKS_PLT_ENTRY_SIZE,
1844 { 8, MINUS_ONE, 20, false },
1846 NULL
1851 /* FDPIC PLT entries. Two unimplemented optimizations for lazy
1852 binding are to omit the lazy binding stub when linking with -z now
1853 and to move lazy binding stubs into a separate region for better
1854 cache behavior. */
1856 #define FDPIC_PLT_ENTRY_SIZE 28
1857 #define FDPIC_PLT_LAZY_OFFSET 20
1859 /* FIXME: The lazy binding stub requires a plt0 - which may need to be
1860 duplicated if it is out of range, or which can be inlined. So
1861 right now it is always inlined, which wastes a word per stub. It
1862 might be easier to handle the duplication if we put the lazy
1863 stubs separately. */
1865 static const bfd_byte fdpic_sh_plt_entry_be[FDPIC_PLT_ENTRY_SIZE] =
1867 0xd0, 0x02, /* mov.l @(12,pc),r0 */
1868 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1869 0x70, 0x04, /* add #4, r0 */
1870 0x41, 0x2b, /* jmp @r1 */
1871 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1872 0x00, 0x09, /* nop */
1873 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1874 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1875 0x60, 0xc2, /* mov.l @r12,r0 */
1876 0x40, 0x2b, /* jmp @r0 */
1877 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1878 0x00, 0x09, /* nop */
1881 static const bfd_byte fdpic_sh_plt_entry_le[FDPIC_PLT_ENTRY_SIZE] =
1883 0x02, 0xd0, /* mov.l @(12,pc),r0 */
1884 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1885 0x04, 0x70, /* add #4, r0 */
1886 0x2b, 0x41, /* jmp @r1 */
1887 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1888 0x09, 0x00, /* nop */
1889 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1890 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1891 0xc2, 0x60, /* mov.l @r12,r0 */
1892 0x2b, 0x40, /* jmp @r0 */
1893 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1894 0x09, 0x00, /* nop */
1897 static const struct elf_sh_plt_info fdpic_sh_plts[2] = {
1899 /* Big-endian PIC. */
1900 NULL,
1902 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1903 fdpic_sh_plt_entry_be,
1904 FDPIC_PLT_ENTRY_SIZE,
1905 { 12, MINUS_ONE, 16, false },
1906 FDPIC_PLT_LAZY_OFFSET,
1907 NULL
1910 /* Little-endian PIC. */
1911 NULL,
1913 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1914 fdpic_sh_plt_entry_le,
1915 FDPIC_PLT_ENTRY_SIZE,
1916 { 12, MINUS_ONE, 16, false },
1917 FDPIC_PLT_LAZY_OFFSET,
1918 NULL
1922 /* On SH2A, we can use the movi20 instruction to generate shorter PLT
1923 entries for the first 64K slots. We use the normal FDPIC PLT entry
1924 past that point; we could also use movi20s, which might be faster,
1925 but would not be any smaller. */
1927 #define FDPIC_SH2A_PLT_ENTRY_SIZE 24
1928 #define FDPIC_SH2A_PLT_LAZY_OFFSET 16
1930 static const bfd_byte fdpic_sh2a_plt_entry_be[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1932 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1933 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1934 0x70, 0x04, /* add #4, r0 */
1935 0x41, 0x2b, /* jmp @r1 */
1936 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1937 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1938 0x60, 0xc2, /* mov.l @r12,r0 */
1939 0x40, 0x2b, /* jmp @r0 */
1940 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1941 0x00, 0x09, /* nop */
1944 static const bfd_byte fdpic_sh2a_plt_entry_le[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1946 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1947 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1948 0x04, 0x70, /* add #4, r0 */
1949 0x2b, 0x41, /* jmp @r1 */
1950 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1951 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1952 0xc2, 0x60, /* mov.l @r12,r0 */
1953 0x2b, 0x40, /* jmp @r0 */
1954 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1955 0x09, 0x00, /* nop */
1958 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_be = {
1959 /* Big-endian FDPIC, max index 64K. */
1960 NULL,
1962 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1963 fdpic_sh2a_plt_entry_be,
1964 FDPIC_SH2A_PLT_ENTRY_SIZE,
1965 { 0, MINUS_ONE, 12, true },
1966 FDPIC_SH2A_PLT_LAZY_OFFSET,
1967 NULL
1970 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_le = {
1971 /* Little-endian FDPIC, max index 64K. */
1972 NULL,
1974 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1975 fdpic_sh2a_plt_entry_le,
1976 FDPIC_SH2A_PLT_ENTRY_SIZE,
1977 { 0, MINUS_ONE, 12, true },
1978 FDPIC_SH2A_PLT_LAZY_OFFSET,
1979 NULL
1982 static const struct elf_sh_plt_info fdpic_sh2a_plts[2] = {
1984 /* Big-endian PIC. */
1985 NULL,
1987 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1988 fdpic_sh_plt_entry_be,
1989 FDPIC_PLT_ENTRY_SIZE,
1990 { 12, MINUS_ONE, 16, false },
1991 FDPIC_PLT_LAZY_OFFSET,
1992 &fdpic_sh2a_short_plt_be
1995 /* Little-endian PIC. */
1996 NULL,
1998 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1999 fdpic_sh_plt_entry_le,
2000 FDPIC_PLT_ENTRY_SIZE,
2001 { 12, MINUS_ONE, 16, false },
2002 FDPIC_PLT_LAZY_OFFSET,
2003 &fdpic_sh2a_short_plt_le
2007 /* Return the type of PLT associated with ABFD. PIC_P is true if
2008 the object is position-independent. */
2010 static const struct elf_sh_plt_info *
2011 get_plt_info (bfd *abfd, bool pic_p)
2013 if (fdpic_object_p (abfd))
2015 /* If any input file requires SH2A we can use a shorter PLT
2016 sequence. */
2017 if (sh_get_arch_from_bfd_mach (bfd_get_mach (abfd)) & arch_sh2a_base)
2018 return &fdpic_sh2a_plts[!bfd_big_endian (abfd)];
2019 else
2020 return &fdpic_sh_plts[!bfd_big_endian (abfd)];
2022 if (vxworks_object_p (abfd))
2023 return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)];
2024 return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
2027 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2028 VALUE is the field's value and CODE_P is true if VALUE refers to code,
2029 not data. */
2031 inline static void
2032 install_plt_field (bfd *output_bfd, bool code_p ATTRIBUTE_UNUSED,
2033 unsigned long value, bfd_byte *addr)
2035 bfd_put_32 (output_bfd, value, addr);
2038 /* The number of PLT entries which can use a shorter PLT, if any.
2039 Currently always 64K, since only SH-2A FDPIC uses this; a
2040 20-bit movi20 can address that many function descriptors below
2041 _GLOBAL_OFFSET_TABLE_. */
2042 #define MAX_SHORT_PLT 65536
2044 /* Return the index of the PLT entry at byte offset OFFSET. */
2046 static bfd_vma
2047 get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset)
2049 bfd_vma plt_index = 0;
2051 offset -= info->plt0_entry_size;
2052 if (info->short_plt != NULL)
2054 if (offset > MAX_SHORT_PLT * info->short_plt->symbol_entry_size)
2056 plt_index = MAX_SHORT_PLT;
2057 offset -= MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2059 else
2060 info = info->short_plt;
2062 return plt_index + offset / info->symbol_entry_size;
2065 /* Do the inverse operation. */
2067 static bfd_vma
2068 get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma plt_index)
2070 bfd_vma offset = 0;
2072 if (info->short_plt != NULL)
2074 if (plt_index > MAX_SHORT_PLT)
2076 offset = MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2077 plt_index -= MAX_SHORT_PLT;
2079 else
2080 info = info->short_plt;
2082 return (offset + info->plt0_entry_size
2083 + (plt_index * info->symbol_entry_size));
2086 union gotref
2088 bfd_signed_vma refcount;
2089 bfd_vma offset;
2092 /* sh ELF linker hash entry. */
2094 struct elf_sh_link_hash_entry
2096 struct elf_link_hash_entry root;
2098 bfd_signed_vma gotplt_refcount;
2100 /* A local function descriptor, for FDPIC. The refcount counts
2101 R_SH_FUNCDESC, R_SH_GOTOFFFUNCDESC, and R_SH_GOTOFFFUNCDESC20
2102 relocations; the PLT and GOT entry are accounted
2103 for separately. After adjust_dynamic_symbol, the offset is
2104 MINUS_ONE if there is no local descriptor (dynamic linker
2105 managed and no PLT entry, or undefined weak non-dynamic).
2106 During check_relocs we do not yet know whether the local
2107 descriptor will be canonical. */
2108 union gotref funcdesc;
2110 /* How many of the above refcounted relocations were R_SH_FUNCDESC,
2111 and thus require fixups or relocations. */
2112 bfd_signed_vma abs_funcdesc_refcount;
2114 enum got_type {
2115 GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE, GOT_FUNCDESC
2116 } got_type;
2119 #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2121 struct sh_elf_obj_tdata
2123 struct elf_obj_tdata root;
2125 /* got_type for each local got entry. */
2126 char *local_got_type;
2128 /* Function descriptor refcount and offset for each local symbol. */
2129 union gotref *local_funcdesc;
2132 #define sh_elf_tdata(abfd) \
2133 ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2135 #define sh_elf_local_got_type(abfd) \
2136 (sh_elf_tdata (abfd)->local_got_type)
2138 #define sh_elf_local_funcdesc(abfd) \
2139 (sh_elf_tdata (abfd)->local_funcdesc)
2141 #define is_sh_elf(bfd) \
2142 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2143 && elf_tdata (bfd) != NULL \
2144 && elf_object_id (bfd) == SH_ELF_DATA)
2146 /* Override the generic function because we need to store sh_elf_obj_tdata
2147 as the specific tdata. */
2149 static bool
2150 sh_elf_mkobject (bfd *abfd)
2152 return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata),
2153 SH_ELF_DATA);
2156 /* sh ELF linker hash table. */
2158 struct elf_sh_link_hash_table
2160 struct elf_link_hash_table root;
2162 /* Short-cuts to get to dynamic linker sections. */
2163 asection *sfuncdesc;
2164 asection *srelfuncdesc;
2165 asection *srofixup;
2167 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2168 asection *srelplt2;
2170 /* A counter or offset to track a TLS got entry. */
2171 union
2173 bfd_signed_vma refcount;
2174 bfd_vma offset;
2175 } tls_ldm_got;
2177 /* The type of PLT to use. */
2178 const struct elf_sh_plt_info *plt_info;
2180 /* True if the target system uses FDPIC. */
2181 bool fdpic_p;
2184 /* Traverse an sh ELF linker hash table. */
2186 #define sh_elf_link_hash_traverse(table, func, info) \
2187 (elf_link_hash_traverse \
2188 (&(table)->root, \
2189 (bool (*) (struct elf_link_hash_entry *, void *)) (func), \
2190 (info)))
2192 /* Get the sh ELF linker hash table from a link_info structure. */
2194 #define sh_elf_hash_table(p) \
2195 ((is_elf_hash_table ((p)->hash) \
2196 && elf_hash_table_id (elf_hash_table (p)) == SH_ELF_DATA) \
2197 ? (struct elf_sh_link_hash_table *) (p)->hash : NULL)
2199 /* Create an entry in an sh ELF linker hash table. */
2201 static struct bfd_hash_entry *
2202 sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2203 struct bfd_hash_table *table,
2204 const char *string)
2206 struct elf_sh_link_hash_entry *ret =
2207 (struct elf_sh_link_hash_entry *) entry;
2209 /* Allocate the structure if it has not already been allocated by a
2210 subclass. */
2211 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2212 ret = ((struct elf_sh_link_hash_entry *)
2213 bfd_hash_allocate (table,
2214 sizeof (struct elf_sh_link_hash_entry)));
2215 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2216 return (struct bfd_hash_entry *) ret;
2218 /* Call the allocation method of the superclass. */
2219 ret = ((struct elf_sh_link_hash_entry *)
2220 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2221 table, string));
2222 if (ret != (struct elf_sh_link_hash_entry *) NULL)
2224 ret->gotplt_refcount = 0;
2225 ret->funcdesc.refcount = 0;
2226 ret->abs_funcdesc_refcount = 0;
2227 ret->got_type = GOT_UNKNOWN;
2230 return (struct bfd_hash_entry *) ret;
2233 /* Create an sh ELF linker hash table. */
2235 static struct bfd_link_hash_table *
2236 sh_elf_link_hash_table_create (bfd *abfd)
2238 struct elf_sh_link_hash_table *ret;
2239 size_t amt = sizeof (struct elf_sh_link_hash_table);
2241 ret = (struct elf_sh_link_hash_table *) bfd_zmalloc (amt);
2242 if (ret == (struct elf_sh_link_hash_table *) NULL)
2243 return NULL;
2245 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2246 sh_elf_link_hash_newfunc,
2247 sizeof (struct elf_sh_link_hash_entry),
2248 SH_ELF_DATA))
2250 free (ret);
2251 return NULL;
2254 if (fdpic_object_p (abfd))
2256 ret->root.dt_pltgot_required = true;
2257 ret->fdpic_p = true;
2260 return &ret->root.root;
2263 static bool
2264 sh_elf_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2265 struct bfd_link_info *info, asection *p)
2267 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
2269 /* Non-FDPIC binaries do not need dynamic symbols for sections. */
2270 if (!htab->fdpic_p)
2271 return true;
2273 /* We need dynamic symbols for every section, since segments can
2274 relocate independently. */
2275 switch (elf_section_data (p)->this_hdr.sh_type)
2277 case SHT_PROGBITS:
2278 case SHT_NOBITS:
2279 /* If sh_type is yet undecided, assume it could be
2280 SHT_PROGBITS/SHT_NOBITS. */
2281 case SHT_NULL:
2282 return false;
2284 /* There shouldn't be section relative relocations
2285 against any other section. */
2286 default:
2287 return true;
2291 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2292 shortcuts to them in our hash table. */
2294 static bool
2295 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2297 struct elf_sh_link_hash_table *htab;
2299 if (! _bfd_elf_create_got_section (dynobj, info))
2300 return false;
2302 htab = sh_elf_hash_table (info);
2303 if (htab == NULL)
2304 return false;
2306 htab->sfuncdesc = bfd_make_section_anyway_with_flags (dynobj, ".got.funcdesc",
2307 (SEC_ALLOC | SEC_LOAD
2308 | SEC_HAS_CONTENTS
2309 | SEC_IN_MEMORY
2310 | SEC_LINKER_CREATED));
2311 if (htab->sfuncdesc == NULL
2312 || !bfd_set_section_alignment (htab->sfuncdesc, 2))
2313 return false;
2315 htab->srelfuncdesc = bfd_make_section_anyway_with_flags (dynobj,
2316 ".rela.got.funcdesc",
2317 (SEC_ALLOC | SEC_LOAD
2318 | SEC_HAS_CONTENTS
2319 | SEC_IN_MEMORY
2320 | SEC_LINKER_CREATED
2321 | SEC_READONLY));
2322 if (htab->srelfuncdesc == NULL
2323 || !bfd_set_section_alignment (htab->srelfuncdesc, 2))
2324 return false;
2326 /* Also create .rofixup. */
2327 htab->srofixup = bfd_make_section_anyway_with_flags (dynobj, ".rofixup",
2328 (SEC_ALLOC | SEC_LOAD
2329 | SEC_HAS_CONTENTS
2330 | SEC_IN_MEMORY
2331 | SEC_LINKER_CREATED
2332 | SEC_READONLY));
2333 if (htab->srofixup == NULL
2334 || !bfd_set_section_alignment (htab->srofixup, 2))
2335 return false;
2337 return true;
2340 /* Create dynamic sections when linking against a dynamic object. */
2342 static bool
2343 sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2345 struct elf_sh_link_hash_table *htab;
2346 flagword flags, pltflags;
2347 asection *s;
2348 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2349 int ptralign = 0;
2351 switch (bed->s->arch_size)
2353 case 32:
2354 ptralign = 2;
2355 break;
2357 case 64:
2358 ptralign = 3;
2359 break;
2361 default:
2362 bfd_set_error (bfd_error_bad_value);
2363 return false;
2366 htab = sh_elf_hash_table (info);
2367 if (htab == NULL)
2368 return false;
2370 if (htab->root.dynamic_sections_created)
2371 return true;
2373 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2374 .rel[a].bss sections. */
2376 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2377 | SEC_LINKER_CREATED);
2379 pltflags = flags;
2380 pltflags |= SEC_CODE;
2381 if (bed->plt_not_loaded)
2382 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2383 if (bed->plt_readonly)
2384 pltflags |= SEC_READONLY;
2386 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
2387 htab->root.splt = s;
2388 if (s == NULL
2389 || !bfd_set_section_alignment (s, bed->plt_alignment))
2390 return false;
2392 if (bed->want_plt_sym)
2394 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2395 .plt section. */
2396 struct elf_link_hash_entry *h;
2397 struct bfd_link_hash_entry *bh = NULL;
2399 if (! (_bfd_generic_link_add_one_symbol
2400 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2401 (bfd_vma) 0, (const char *) NULL, false,
2402 get_elf_backend_data (abfd)->collect, &bh)))
2403 return false;
2405 h = (struct elf_link_hash_entry *) bh;
2406 h->def_regular = 1;
2407 h->type = STT_OBJECT;
2408 htab->root.hplt = h;
2410 if (bfd_link_pic (info)
2411 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2412 return false;
2415 s = bfd_make_section_anyway_with_flags (abfd,
2416 bed->default_use_rela_p
2417 ? ".rela.plt" : ".rel.plt",
2418 flags | SEC_READONLY);
2419 htab->root.srelplt = s;
2420 if (s == NULL
2421 || !bfd_set_section_alignment (s, ptralign))
2422 return false;
2424 if (htab->root.sgot == NULL
2425 && !create_got_section (abfd, info))
2426 return false;
2428 if (bed->want_dynbss)
2430 /* The .dynbss section is a place to put symbols which are defined
2431 by dynamic objects, are referenced by regular objects, and are
2432 not functions. We must allocate space for them in the process
2433 image and use a R_*_COPY reloc to tell the dynamic linker to
2434 initialize them at run time. The linker script puts the .dynbss
2435 section into the .bss section of the final image. */
2436 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
2437 SEC_ALLOC | SEC_LINKER_CREATED);
2438 htab->root.sdynbss = s;
2439 if (s == NULL)
2440 return false;
2442 /* The .rel[a].bss section holds copy relocs. This section is not
2443 normally needed. We need to create it here, though, so that the
2444 linker will map it to an output section. We can't just create it
2445 only if we need it, because we will not know whether we need it
2446 until we have seen all the input files, and the first time the
2447 main linker code calls BFD after examining all the input files
2448 (size_dynamic_sections) the input sections have already been
2449 mapped to the output sections. If the section turns out not to
2450 be needed, we can discard it later. We will never need this
2451 section when generating a shared object, since they do not use
2452 copy relocs. */
2453 if (! bfd_link_pic (info))
2455 s = bfd_make_section_anyway_with_flags (abfd,
2456 (bed->default_use_rela_p
2457 ? ".rela.bss" : ".rel.bss"),
2458 flags | SEC_READONLY);
2459 htab->root.srelbss = s;
2460 if (s == NULL
2461 || !bfd_set_section_alignment (s, ptralign))
2462 return false;
2466 if (htab->root.target_os == is_vxworks)
2468 if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2469 return false;
2472 return true;
2475 /* Adjust a symbol defined by a dynamic object and referenced by a
2476 regular object. The current definition is in some section of the
2477 dynamic object, but we're not including those sections. We have to
2478 change the definition to something the rest of the link can
2479 understand. */
2481 static bool
2482 sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2483 struct elf_link_hash_entry *h)
2485 struct elf_sh_link_hash_table *htab;
2486 asection *s;
2488 htab = sh_elf_hash_table (info);
2489 if (htab == NULL)
2490 return false;
2492 /* Make sure we know what is going on here. */
2493 BFD_ASSERT (htab->root.dynobj != NULL
2494 && (h->needs_plt
2495 || h->is_weakalias
2496 || (h->def_dynamic
2497 && h->ref_regular
2498 && !h->def_regular)));
2500 /* If this is a function, put it in the procedure linkage table. We
2501 will fill in the contents of the procedure linkage table later,
2502 when we know the address of the .got section. */
2503 if (h->type == STT_FUNC
2504 || h->needs_plt)
2506 if (h->plt.refcount <= 0
2507 || SYMBOL_CALLS_LOCAL (info, h)
2508 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2509 && h->root.type == bfd_link_hash_undefweak))
2511 /* This case can occur if we saw a PLT reloc in an input
2512 file, but the symbol was never referred to by a dynamic
2513 object. In such a case, we don't actually need to build
2514 a procedure linkage table, and we can just do a REL32
2515 reloc instead. */
2516 h->plt.offset = (bfd_vma) -1;
2517 h->needs_plt = 0;
2520 return true;
2522 else
2523 h->plt.offset = (bfd_vma) -1;
2525 /* If this is a weak symbol, and there is a real definition, the
2526 processor independent code will have arranged for us to see the
2527 real definition first, and we can just use the same value. */
2528 if (h->is_weakalias)
2530 struct elf_link_hash_entry *def = weakdef (h);
2531 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2532 h->root.u.def.section = def->root.u.def.section;
2533 h->root.u.def.value = def->root.u.def.value;
2534 if (info->nocopyreloc)
2535 h->non_got_ref = def->non_got_ref;
2536 return true;
2539 /* This is a reference to a symbol defined by a dynamic object which
2540 is not a function. */
2542 /* If we are creating a shared library, we must presume that the
2543 only references to the symbol are via the global offset table.
2544 For such cases we need not do anything here; the relocations will
2545 be handled correctly by relocate_section. */
2546 if (bfd_link_pic (info))
2547 return true;
2549 /* If there are no references to this symbol that do not use the
2550 GOT, we don't need to generate a copy reloc. */
2551 if (!h->non_got_ref)
2552 return true;
2554 /* If -z nocopyreloc was given, we won't generate them either. */
2555 if (0 && info->nocopyreloc)
2557 h->non_got_ref = 0;
2558 return true;
2561 /* If we don't find any dynamic relocs in read-only sections, then
2562 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2563 if (0 && !_bfd_elf_readonly_dynrelocs (h))
2565 h->non_got_ref = 0;
2566 return true;
2569 /* We must allocate the symbol in our .dynbss section, which will
2570 become part of the .bss section of the executable. There will be
2571 an entry for this symbol in the .dynsym section. The dynamic
2572 object will contain position independent code, so all references
2573 from the dynamic object to this symbol will go through the global
2574 offset table. The dynamic linker will use the .dynsym entry to
2575 determine the address it must put in the global offset table, so
2576 both the dynamic object and the regular object will refer to the
2577 same memory location for the variable. */
2579 s = htab->root.sdynbss;
2580 BFD_ASSERT (s != NULL);
2582 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2583 copy the initial value out of the dynamic object and into the
2584 runtime process image. We need to remember the offset into the
2585 .rela.bss section we are going to use. */
2586 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2588 asection *srel;
2590 srel = htab->root.srelbss;
2591 BFD_ASSERT (srel != NULL);
2592 srel->size += sizeof (Elf32_External_Rela);
2593 h->needs_copy = 1;
2596 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2599 /* Allocate space in .plt, .got and associated reloc sections for
2600 dynamic relocs. */
2602 static bool
2603 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2605 struct bfd_link_info *info;
2606 struct elf_sh_link_hash_table *htab;
2607 struct elf_sh_link_hash_entry *eh;
2608 struct elf_dyn_relocs *p;
2610 if (h->root.type == bfd_link_hash_indirect)
2611 return true;
2613 info = (struct bfd_link_info *) inf;
2614 htab = sh_elf_hash_table (info);
2615 if (htab == NULL)
2616 return false;
2618 eh = (struct elf_sh_link_hash_entry *) h;
2619 if ((h->got.refcount > 0
2620 || h->forced_local)
2621 && eh->gotplt_refcount > 0)
2623 /* The symbol has been forced local, or we have some direct got refs,
2624 so treat all the gotplt refs as got refs. */
2625 h->got.refcount += eh->gotplt_refcount;
2626 if (h->plt.refcount >= eh->gotplt_refcount)
2627 h->plt.refcount -= eh->gotplt_refcount;
2630 if (htab->root.dynamic_sections_created
2631 && h->plt.refcount > 0
2632 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2633 || h->root.type != bfd_link_hash_undefweak))
2635 /* Make sure this symbol is output as a dynamic symbol.
2636 Undefined weak syms won't yet be marked as dynamic. */
2637 if (h->dynindx == -1
2638 && !h->forced_local)
2640 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2641 return false;
2644 if (bfd_link_pic (info)
2645 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2647 asection *s = htab->root.splt;
2648 const struct elf_sh_plt_info *plt_info;
2650 /* If this is the first .plt entry, make room for the special
2651 first entry. */
2652 if (s->size == 0)
2653 s->size += htab->plt_info->plt0_entry_size;
2655 h->plt.offset = s->size;
2657 /* If this symbol is not defined in a regular file, and we are
2658 not generating a shared library, then set the symbol to this
2659 location in the .plt. This is required to make function
2660 pointers compare as equal between the normal executable and
2661 the shared library. Skip this for FDPIC, since the
2662 function's address will be the address of the canonical
2663 function descriptor. */
2664 if (!htab->fdpic_p && !bfd_link_pic (info) && !h->def_regular)
2666 h->root.u.def.section = s;
2667 h->root.u.def.value = h->plt.offset;
2670 /* Make room for this entry. */
2671 plt_info = htab->plt_info;
2672 if (plt_info->short_plt != NULL
2673 && (get_plt_index (plt_info->short_plt, s->size) < MAX_SHORT_PLT))
2674 plt_info = plt_info->short_plt;
2675 s->size += plt_info->symbol_entry_size;
2677 /* We also need to make an entry in the .got.plt section, which
2678 will be placed in the .got section by the linker script. */
2679 if (!htab->fdpic_p)
2680 htab->root.sgotplt->size += 4;
2681 else
2682 htab->root.sgotplt->size += 8;
2684 /* We also need to make an entry in the .rel.plt section. */
2685 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
2687 if (htab->root.target_os == is_vxworks && !bfd_link_pic (info))
2689 /* VxWorks executables have a second set of relocations
2690 for each PLT entry. They go in a separate relocation
2691 section, which is processed by the kernel loader. */
2693 /* There is a relocation for the initial PLT entry:
2694 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2695 if (h->plt.offset == htab->plt_info->plt0_entry_size)
2696 htab->srelplt2->size += sizeof (Elf32_External_Rela);
2698 /* There are two extra relocations for each subsequent
2699 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2700 and an R_SH_DIR32 relocation for the PLT entry. */
2701 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2704 else
2706 h->plt.offset = (bfd_vma) -1;
2707 h->needs_plt = 0;
2710 else
2712 h->plt.offset = (bfd_vma) -1;
2713 h->needs_plt = 0;
2716 if (h->got.refcount > 0)
2718 asection *s;
2719 bool dyn;
2720 enum got_type got_type = sh_elf_hash_entry (h)->got_type;
2722 /* Make sure this symbol is output as a dynamic symbol.
2723 Undefined weak syms won't yet be marked as dynamic. */
2724 if (h->dynindx == -1
2725 && !h->forced_local)
2727 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2728 return false;
2731 s = htab->root.sgot;
2732 h->got.offset = s->size;
2733 s->size += 4;
2734 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2735 if (got_type == GOT_TLS_GD)
2736 s->size += 4;
2737 dyn = htab->root.dynamic_sections_created;
2738 if (!dyn)
2740 /* No dynamic relocations required. */
2741 if (htab->fdpic_p && !bfd_link_pic (info)
2742 && h->root.type != bfd_link_hash_undefweak
2743 && (got_type == GOT_NORMAL || got_type == GOT_FUNCDESC))
2744 htab->srofixup->size += 4;
2746 /* No dynamic relocations required when IE->LE conversion happens. */
2747 else if (got_type == GOT_TLS_IE
2748 && !h->def_dynamic
2749 && !bfd_link_pic (info))
2751 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2752 R_SH_TLS_GD needs one if local symbol and two if global. */
2753 else if ((got_type == GOT_TLS_GD && h->dynindx == -1)
2754 || got_type == GOT_TLS_IE)
2755 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2756 else if (got_type == GOT_TLS_GD)
2757 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2758 else if (got_type == GOT_FUNCDESC)
2760 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2761 htab->srofixup->size += 4;
2762 else
2763 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2765 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2766 || h->root.type != bfd_link_hash_undefweak)
2767 && (bfd_link_pic (info)
2768 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2769 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2770 else if (htab->fdpic_p
2771 && !bfd_link_pic (info)
2772 && got_type == GOT_NORMAL
2773 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2774 || h->root.type != bfd_link_hash_undefweak))
2775 htab->srofixup->size += 4;
2777 else
2778 h->got.offset = (bfd_vma) -1;
2780 /* Allocate space for any dynamic relocations to function
2781 descriptors, canonical or otherwise. We need to relocate the
2782 reference unless it resolves to zero, which only happens for
2783 undefined weak symbols (either non-default visibility, or when
2784 static linking). Any GOT slot is accounted for elsewhere. */
2785 if (eh->abs_funcdesc_refcount > 0
2786 && (h->root.type != bfd_link_hash_undefweak
2787 || (htab->root.dynamic_sections_created
2788 && ! SYMBOL_CALLS_LOCAL (info, h))))
2790 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2791 htab->srofixup->size += eh->abs_funcdesc_refcount * 4;
2792 else
2793 htab->root.srelgot->size
2794 += eh->abs_funcdesc_refcount * sizeof (Elf32_External_Rela);
2797 /* We must allocate a function descriptor if there are references to
2798 a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and
2799 the dynamic linker isn't going to allocate it. None of this
2800 applies if we already created one in .got.plt, but if the
2801 canonical function descriptor can be in this object, there
2802 won't be a PLT entry at all. */
2803 if ((eh->funcdesc.refcount > 0
2804 || (h->got.offset != MINUS_ONE && eh->got_type == GOT_FUNCDESC))
2805 && h->root.type != bfd_link_hash_undefweak
2806 && SYMBOL_FUNCDESC_LOCAL (info, h))
2808 /* Make room for this function descriptor. */
2809 eh->funcdesc.offset = htab->sfuncdesc->size;
2810 htab->sfuncdesc->size += 8;
2812 /* We will need a relocation or two fixups to initialize the
2813 function descriptor, so allocate those too. */
2814 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
2815 htab->srofixup->size += 8;
2816 else
2817 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
2820 if (h->dyn_relocs == NULL)
2821 return true;
2823 /* In the shared -Bsymbolic case, discard space allocated for
2824 dynamic pc-relative relocs against symbols which turn out to be
2825 defined in regular objects. For the normal shared case, discard
2826 space for pc-relative relocs that have become local due to symbol
2827 visibility changes. */
2829 if (bfd_link_pic (info))
2831 if (SYMBOL_CALLS_LOCAL (info, h))
2833 struct elf_dyn_relocs **pp;
2835 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2837 p->count -= p->pc_count;
2838 p->pc_count = 0;
2839 if (p->count == 0)
2840 *pp = p->next;
2841 else
2842 pp = &p->next;
2846 if (htab->root.target_os == is_vxworks)
2848 struct elf_dyn_relocs **pp;
2850 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2852 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2853 *pp = p->next;
2854 else
2855 pp = &p->next;
2859 /* Also discard relocs on undefined weak syms with non-default
2860 visibility. */
2861 if (h->dyn_relocs != NULL
2862 && h->root.type == bfd_link_hash_undefweak)
2864 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2865 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2866 h->dyn_relocs = NULL;
2868 /* Make sure undefined weak symbols are output as a dynamic
2869 symbol in PIEs. */
2870 else if (h->dynindx == -1
2871 && !h->forced_local)
2873 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2874 return false;
2878 else
2880 /* For the non-shared case, discard space for relocs against
2881 symbols which turn out to need copy relocs or are not
2882 dynamic. */
2884 if (!h->non_got_ref
2885 && ((h->def_dynamic
2886 && !h->def_regular)
2887 || (htab->root.dynamic_sections_created
2888 && (h->root.type == bfd_link_hash_undefweak
2889 || h->root.type == bfd_link_hash_undefined))))
2891 /* Make sure this symbol is output as a dynamic symbol.
2892 Undefined weak syms won't yet be marked as dynamic. */
2893 if (h->dynindx == -1
2894 && !h->forced_local)
2896 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2897 return false;
2900 /* If that succeeded, we know we'll be keeping all the
2901 relocs. */
2902 if (h->dynindx != -1)
2903 goto keep;
2906 h->dyn_relocs = NULL;
2908 keep: ;
2911 /* Finally, allocate space. */
2912 for (p = h->dyn_relocs; p != NULL; p = p->next)
2914 asection *sreloc = elf_section_data (p->sec)->sreloc;
2915 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2917 /* If we need relocations, we do not need fixups. */
2918 if (htab->fdpic_p && !bfd_link_pic (info))
2919 htab->srofixup->size -= 4 * (p->count - p->pc_count);
2922 return true;
2925 /* This function is called after all the input files have been read,
2926 and the input sections have been assigned to output sections.
2927 It's a convenient place to determine the PLT style. */
2929 static bool
2930 sh_elf_early_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2932 sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd,
2933 bfd_link_pic (info));
2935 if (sh_elf_hash_table (info)->fdpic_p && !bfd_link_relocatable (info)
2936 && !bfd_elf_stack_segment_size (output_bfd, info,
2937 "__stacksize", DEFAULT_STACK_SIZE))
2938 return false;
2939 return true;
2942 /* Set the sizes of the dynamic sections. */
2944 static bool
2945 sh_elf_late_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2946 struct bfd_link_info *info)
2948 struct elf_sh_link_hash_table *htab;
2949 bfd *dynobj;
2950 asection *s;
2951 bool relocs;
2952 bfd *ibfd;
2954 htab = sh_elf_hash_table (info);
2955 if (htab == NULL)
2956 return false;
2958 dynobj = htab->root.dynobj;
2959 if (dynobj == NULL)
2960 return true;
2962 if (htab->root.dynamic_sections_created)
2964 /* Set the contents of the .interp section to the interpreter. */
2965 if (bfd_link_executable (info) && !info->nointerp)
2967 s = bfd_get_linker_section (dynobj, ".interp");
2968 BFD_ASSERT (s != NULL);
2969 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2970 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2974 /* Set up .got offsets for local syms, and space for local dynamic
2975 relocs. */
2976 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2978 bfd_signed_vma *local_got;
2979 bfd_signed_vma *end_local_got;
2980 union gotref *local_funcdesc, *end_local_funcdesc;
2981 char *local_got_type;
2982 bfd_size_type locsymcount;
2983 Elf_Internal_Shdr *symtab_hdr;
2984 asection *srel;
2986 if (! is_sh_elf (ibfd))
2987 continue;
2989 for (s = ibfd->sections; s != NULL; s = s->next)
2991 struct elf_dyn_relocs *p;
2993 for (p = ((struct elf_dyn_relocs *)
2994 elf_section_data (s)->local_dynrel);
2995 p != NULL;
2996 p = p->next)
2998 if (! bfd_is_abs_section (p->sec)
2999 && bfd_is_abs_section (p->sec->output_section))
3001 /* Input section has been discarded, either because
3002 it is a copy of a linkonce section or due to
3003 linker script /DISCARD/, so we'll be discarding
3004 the relocs too. */
3006 else if (htab->root.target_os == is_vxworks
3007 && strcmp (p->sec->output_section->name,
3008 ".tls_vars") == 0)
3010 /* Relocations in vxworks .tls_vars sections are
3011 handled specially by the loader. */
3013 else if (p->count != 0)
3015 srel = elf_section_data (p->sec)->sreloc;
3016 srel->size += p->count * sizeof (Elf32_External_Rela);
3017 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3019 info->flags |= DF_TEXTREL;
3020 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
3021 p->sec->owner, p->sec);
3024 /* If we need relocations, we do not need fixups. */
3025 if (htab->fdpic_p && !bfd_link_pic (info))
3026 htab->srofixup->size -= 4 * (p->count - p->pc_count);
3031 symtab_hdr = &elf_symtab_hdr (ibfd);
3032 locsymcount = symtab_hdr->sh_info;
3033 s = htab->root.sgot;
3034 srel = htab->root.srelgot;
3036 local_got = elf_local_got_refcounts (ibfd);
3037 if (local_got)
3039 end_local_got = local_got + locsymcount;
3040 local_got_type = sh_elf_local_got_type (ibfd);
3041 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3042 for (; local_got < end_local_got; ++local_got)
3044 if (*local_got > 0)
3046 *local_got = s->size;
3047 s->size += 4;
3048 if (*local_got_type == GOT_TLS_GD)
3049 s->size += 4;
3050 if (bfd_link_pic (info))
3051 srel->size += sizeof (Elf32_External_Rela);
3052 else
3053 htab->srofixup->size += 4;
3055 if (*local_got_type == GOT_FUNCDESC)
3057 if (local_funcdesc == NULL)
3059 bfd_size_type size;
3061 size = locsymcount * sizeof (union gotref);
3062 local_funcdesc = (union gotref *) bfd_zalloc (ibfd,
3063 size);
3064 if (local_funcdesc == NULL)
3065 return false;
3066 sh_elf_local_funcdesc (ibfd) = local_funcdesc;
3067 local_funcdesc += (local_got
3068 - elf_local_got_refcounts (ibfd));
3070 local_funcdesc->refcount++;
3071 ++local_funcdesc;
3074 else
3075 *local_got = (bfd_vma) -1;
3076 ++local_got_type;
3080 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3081 if (local_funcdesc)
3083 end_local_funcdesc = local_funcdesc + locsymcount;
3085 for (; local_funcdesc < end_local_funcdesc; ++local_funcdesc)
3087 if (local_funcdesc->refcount > 0)
3089 local_funcdesc->offset = htab->sfuncdesc->size;
3090 htab->sfuncdesc->size += 8;
3091 if (!bfd_link_pic (info))
3092 htab->srofixup->size += 8;
3093 else
3094 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
3096 else
3097 local_funcdesc->offset = MINUS_ONE;
3103 if (htab->tls_ldm_got.refcount > 0)
3105 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3106 relocs. */
3107 htab->tls_ldm_got.offset = htab->root.sgot->size;
3108 htab->root.sgot->size += 8;
3109 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
3111 else
3112 htab->tls_ldm_got.offset = -1;
3114 /* Only the reserved entries should be present. For FDPIC, they go at
3115 the end of .got.plt. */
3116 if (htab->fdpic_p)
3118 BFD_ASSERT (htab->root.sgotplt && htab->root.sgotplt->size == 12);
3119 htab->root.sgotplt->size = 0;
3122 /* Allocate global sym .plt and .got entries, and space for global
3123 sym dynamic relocs. */
3124 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3126 /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
3127 end of the FDPIC .got.plt. */
3128 if (htab->fdpic_p)
3130 htab->root.hgot->root.u.def.value = htab->root.sgotplt->size;
3131 htab->root.sgotplt->size += 12;
3134 /* At the very end of the .rofixup section is a pointer to the GOT. */
3135 if (htab->fdpic_p && htab->srofixup != NULL)
3136 htab->srofixup->size += 4;
3138 /* We now have determined the sizes of the various dynamic sections.
3139 Allocate memory for them. */
3140 relocs = false;
3141 for (s = dynobj->sections; s != NULL; s = s->next)
3143 if ((s->flags & SEC_LINKER_CREATED) == 0)
3144 continue;
3146 if (s == htab->root.splt
3147 || s == htab->root.sgot
3148 || s == htab->root.sgotplt
3149 || s == htab->sfuncdesc
3150 || s == htab->srofixup
3151 || s == htab->root.sdynbss)
3153 /* Strip this section if we don't need it; see the
3154 comment below. */
3156 else if (startswith (bfd_section_name (s), ".rela"))
3158 if (s->size != 0 && s != htab->root.srelplt && s != htab->srelplt2)
3159 relocs = true;
3161 /* We use the reloc_count field as a counter if we need
3162 to copy relocs into the output file. */
3163 s->reloc_count = 0;
3165 else
3167 /* It's not one of our sections, so don't allocate space. */
3168 continue;
3171 if (s->size == 0)
3173 /* If we don't need this section, strip it from the
3174 output file. This is mostly to handle .rela.bss and
3175 .rela.plt. We must create both sections in
3176 create_dynamic_sections, because they must be created
3177 before the linker maps input sections to output
3178 sections. The linker does that before
3179 adjust_dynamic_symbol is called, and it is that
3180 function which decides whether anything needs to go
3181 into these sections. */
3183 s->flags |= SEC_EXCLUDE;
3184 continue;
3187 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3188 continue;
3190 /* Allocate memory for the section contents. We use bfd_zalloc
3191 here in case unused entries are not reclaimed before the
3192 section's contents are written out. This should not happen,
3193 but this way if it does, we get a R_SH_NONE reloc instead
3194 of garbage. */
3195 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3196 if (s->contents == NULL)
3197 return false;
3200 return _bfd_elf_maybe_vxworks_add_dynamic_tags (output_bfd, info,
3201 relocs);
3204 /* Add a dynamic relocation to the SRELOC section. */
3206 inline static bfd_vma
3207 sh_elf_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
3208 int reloc_type, long dynindx, bfd_vma addend)
3210 Elf_Internal_Rela outrel;
3211 bfd_vma reloc_offset;
3213 outrel.r_offset = offset;
3214 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
3215 outrel.r_addend = addend;
3217 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rela);
3218 BFD_ASSERT (reloc_offset < sreloc->size);
3219 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3220 sreloc->contents + reloc_offset);
3221 sreloc->reloc_count++;
3223 return reloc_offset;
3226 /* Add an FDPIC read-only fixup. */
3228 inline static void
3229 sh_elf_add_rofixup (bfd *output_bfd, asection *srofixup, bfd_vma offset)
3231 bfd_vma fixup_offset;
3233 fixup_offset = srofixup->reloc_count++ * 4;
3234 BFD_ASSERT (fixup_offset < srofixup->size);
3235 bfd_put_32 (output_bfd, offset, srofixup->contents + fixup_offset);
3238 /* Return the offset of the generated .got section from the
3239 _GLOBAL_OFFSET_TABLE_ symbol. */
3241 static bfd_signed_vma
3242 sh_elf_got_offset (struct elf_sh_link_hash_table *htab)
3244 return (htab->root.sgot->output_offset - htab->root.sgotplt->output_offset
3245 - htab->root.hgot->root.u.def.value);
3248 /* Find the segment number in which OSEC, and output section, is
3249 located. */
3251 static unsigned
3252 sh_elf_osec_to_segment (bfd *output_bfd, asection *osec)
3254 Elf_Internal_Phdr *p = NULL;
3256 if (output_bfd->xvec->flavour == bfd_target_elf_flavour
3257 /* PR ld/17110: Do not look for output segments in an input bfd. */
3258 && output_bfd->direction != read_direction)
3259 p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
3261 /* FIXME: Nothing ever says what this index is relative to. The kernel
3262 supplies data in terms of the number of load segments but this is
3263 a phdr index and the first phdr may not be a load segment. */
3264 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
3267 static bool
3268 sh_elf_osec_readonly_p (bfd *output_bfd, asection *osec)
3270 unsigned seg = sh_elf_osec_to_segment (output_bfd, osec);
3272 return (seg != (unsigned) -1
3273 && ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W));
3276 /* Generate the initial contents of a local function descriptor, along
3277 with any relocations or fixups required. */
3278 static bool
3279 sh_elf_initialize_funcdesc (bfd *output_bfd,
3280 struct bfd_link_info *info,
3281 struct elf_link_hash_entry *h,
3282 bfd_vma offset,
3283 asection *section,
3284 bfd_vma value)
3286 struct elf_sh_link_hash_table *htab;
3287 int dynindx;
3288 bfd_vma addr, seg;
3290 htab = sh_elf_hash_table (info);
3292 /* FIXME: The ABI says that the offset to the function goes in the
3293 descriptor, along with the segment index. We're RELA, so it could
3294 go in the reloc instead... */
3296 if (h != NULL && SYMBOL_CALLS_LOCAL (info, h))
3298 section = h->root.u.def.section;
3299 value = h->root.u.def.value;
3302 if (h == NULL || SYMBOL_CALLS_LOCAL (info, h))
3304 dynindx = elf_section_data (section->output_section)->dynindx;
3305 addr = value + section->output_offset;
3306 seg = sh_elf_osec_to_segment (output_bfd, section->output_section);
3308 else
3310 BFD_ASSERT (h->dynindx != -1);
3311 dynindx = h->dynindx;
3312 addr = seg = 0;
3315 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
3317 if (h == NULL || h->root.type != bfd_link_hash_undefweak)
3319 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3320 offset
3321 + htab->sfuncdesc->output_section->vma
3322 + htab->sfuncdesc->output_offset);
3323 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3324 offset + 4
3325 + htab->sfuncdesc->output_section->vma
3326 + htab->sfuncdesc->output_offset);
3329 /* There are no dynamic relocations so fill in the final
3330 address and gp value (barring fixups). */
3331 addr += section->output_section->vma;
3332 seg = htab->root.hgot->root.u.def.value
3333 + htab->root.hgot->root.u.def.section->output_section->vma
3334 + htab->root.hgot->root.u.def.section->output_offset;
3336 else
3337 sh_elf_add_dyn_reloc (output_bfd, htab->srelfuncdesc,
3338 offset
3339 + htab->sfuncdesc->output_section->vma
3340 + htab->sfuncdesc->output_offset,
3341 R_SH_FUNCDESC_VALUE, dynindx, 0);
3343 bfd_put_32 (output_bfd, addr, htab->sfuncdesc->contents + offset);
3344 bfd_put_32 (output_bfd, seg, htab->sfuncdesc->contents + offset + 4);
3346 return true;
3349 /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
3350 VALUE is the field's value. Return bfd_reloc_ok if successful or an error
3351 otherwise. */
3353 static bfd_reloc_status_type
3354 install_movi20_field (bfd *output_bfd, unsigned long relocation,
3355 bfd *input_bfd, asection *input_section,
3356 bfd_byte *contents, bfd_vma offset)
3358 unsigned long cur_val;
3359 bfd_byte *addr;
3360 bfd_reloc_status_type r;
3362 if (offset > bfd_get_section_limit (input_bfd, input_section))
3363 return bfd_reloc_outofrange;
3365 r = bfd_check_overflow (complain_overflow_signed, 20, 0,
3366 bfd_arch_bits_per_address (input_bfd), relocation);
3367 if (r != bfd_reloc_ok)
3368 return r;
3370 addr = contents + offset;
3371 cur_val = bfd_get_16 (output_bfd, addr);
3372 bfd_put_16 (output_bfd, cur_val | ((relocation & 0xf0000) >> 12), addr);
3373 bfd_put_16 (output_bfd, relocation & 0xffff, addr + 2);
3375 return bfd_reloc_ok;
3378 /* Relocate an SH ELF section. */
3380 static int
3381 sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3382 bfd *input_bfd, asection *input_section,
3383 bfd_byte *contents, Elf_Internal_Rela *relocs,
3384 Elf_Internal_Sym *local_syms,
3385 asection **local_sections)
3387 struct elf_sh_link_hash_table *htab;
3388 Elf_Internal_Shdr *symtab_hdr;
3389 struct elf_link_hash_entry **sym_hashes;
3390 Elf_Internal_Rela *rel, *relend;
3391 bfd_vma *local_got_offsets;
3392 asection *sgot = NULL;
3393 asection *sgotplt = NULL;
3394 asection *splt = NULL;
3395 asection *sreloc = NULL;
3396 asection *srelgot = NULL;
3397 bool is_vxworks_tls;
3398 unsigned isec_segment, got_segment, plt_segment, check_segment[2];
3399 bool fdpic_p = false;
3401 if (!is_sh_elf (input_bfd))
3403 bfd_set_error (bfd_error_wrong_format);
3404 return false;
3407 htab = sh_elf_hash_table (info);
3408 if (htab != NULL)
3410 sgot = htab->root.sgot;
3411 sgotplt = htab->root.sgotplt;
3412 srelgot = htab->root.srelgot;
3413 splt = htab->root.splt;
3414 fdpic_p = htab->fdpic_p;
3416 symtab_hdr = &elf_symtab_hdr (input_bfd);
3417 sym_hashes = elf_sym_hashes (input_bfd);
3418 local_got_offsets = elf_local_got_offsets (input_bfd);
3420 isec_segment = sh_elf_osec_to_segment (output_bfd,
3421 input_section->output_section);
3422 if (fdpic_p && sgot)
3423 got_segment = sh_elf_osec_to_segment (output_bfd,
3424 sgot->output_section);
3425 else
3426 got_segment = -1;
3427 if (fdpic_p && splt)
3428 plt_segment = sh_elf_osec_to_segment (output_bfd,
3429 splt->output_section);
3430 else
3431 plt_segment = -1;
3433 /* We have to handle relocations in vxworks .tls_vars sections
3434 specially, because the dynamic loader is 'weird'. */
3435 is_vxworks_tls = (htab && htab->root.target_os == is_vxworks && bfd_link_pic (info)
3436 && !strcmp (input_section->output_section->name,
3437 ".tls_vars"));
3439 rel = relocs;
3440 relend = relocs + input_section->reloc_count;
3441 for (; rel < relend; rel++)
3443 int r_type;
3444 reloc_howto_type *howto;
3445 unsigned long r_symndx;
3446 Elf_Internal_Sym *sym;
3447 asection *sec;
3448 struct elf_link_hash_entry *h;
3449 bfd_vma relocation;
3450 bfd_vma addend = (bfd_vma) 0;
3451 bfd_reloc_status_type r;
3452 bfd_vma off;
3453 enum got_type got_type;
3454 const char *symname = NULL;
3455 bool resolved_to_zero;
3457 r_symndx = ELF32_R_SYM (rel->r_info);
3459 r_type = ELF32_R_TYPE (rel->r_info);
3461 /* Many of the relocs are only used for relaxing, and are
3462 handled entirely by the relaxation code. */
3463 if (r_type >= (int) R_SH_GNU_VTINHERIT
3464 && r_type <= (int) R_SH_LABEL)
3465 continue;
3466 if (r_type == (int) R_SH_NONE)
3467 continue;
3469 if (r_type < 0
3470 || r_type >= R_SH_max
3471 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3472 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3473 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3474 && r_type <= (int) R_SH_LAST_INVALID_RELOC_2)
3475 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3476 && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3477 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3478 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3479 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3480 && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3481 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_6
3482 && r_type <= (int) R_SH_LAST_INVALID_RELOC_6))
3484 bfd_set_error (bfd_error_bad_value);
3485 return false;
3488 howto = get_howto_table (output_bfd) + r_type;
3490 /* For relocs that aren't partial_inplace, we get the addend from
3491 the relocation. */
3492 if (! howto->partial_inplace)
3493 addend = rel->r_addend;
3495 resolved_to_zero = false;
3496 h = NULL;
3497 sym = NULL;
3498 sec = NULL;
3499 check_segment[0] = -1;
3500 check_segment[1] = -1;
3501 if (r_symndx < symtab_hdr->sh_info)
3503 sym = local_syms + r_symndx;
3504 sec = local_sections[r_symndx];
3506 symname = bfd_elf_string_from_elf_section
3507 (input_bfd, symtab_hdr->sh_link, sym->st_name);
3508 if (symname == NULL || *symname == '\0')
3509 symname = bfd_section_name (sec);
3511 relocation = (sec->output_section->vma
3512 + sec->output_offset
3513 + sym->st_value);
3515 if (sec != NULL && discarded_section (sec))
3516 /* Handled below. */
3518 else if (bfd_link_relocatable (info))
3520 /* This is a relocatable link. We don't have to change
3521 anything, unless the reloc is against a section symbol,
3522 in which case we have to adjust according to where the
3523 section symbol winds up in the output section. */
3524 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3526 if (! howto->partial_inplace)
3528 /* For relocations with the addend in the
3529 relocation, we need just to update the addend.
3530 All real relocs are of type partial_inplace; this
3531 code is mostly for completeness. */
3532 rel->r_addend += sec->output_offset;
3534 continue;
3537 /* Relocs of type partial_inplace need to pick up the
3538 contents in the contents and add the offset resulting
3539 from the changed location of the section symbol.
3540 Using _bfd_final_link_relocate (e.g. goto
3541 final_link_relocate) here would be wrong, because
3542 relocations marked pc_relative would get the current
3543 location subtracted, and we must only do that at the
3544 final link. */
3545 r = _bfd_relocate_contents (howto, input_bfd,
3546 sec->output_offset
3547 + sym->st_value,
3548 contents + rel->r_offset);
3549 goto relocation_done;
3552 continue;
3554 else if (! howto->partial_inplace)
3556 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3557 addend = rel->r_addend;
3559 else if ((sec->flags & SEC_MERGE)
3560 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3562 asection *msec;
3564 if (howto->rightshift || howto->src_mask != 0xffffffff)
3566 _bfd_error_handler
3567 /* xgettext:c-format */
3568 (_("%pB(%pA+%#" PRIx64 "): "
3569 "%s relocation against SEC_MERGE section"),
3570 input_bfd, input_section,
3571 (uint64_t) rel->r_offset, howto->name);
3572 return false;
3575 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3576 msec = sec;
3577 addend =
3578 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3579 - relocation;
3580 addend += msec->output_section->vma + msec->output_offset;
3581 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3582 addend = 0;
3585 else
3587 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3589 relocation = 0;
3590 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3591 symname = h->root.root.string;
3592 while (h->root.type == bfd_link_hash_indirect
3593 || h->root.type == bfd_link_hash_warning)
3594 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3595 if (h->root.type == bfd_link_hash_defined
3596 || h->root.type == bfd_link_hash_defweak)
3598 bool dyn;
3600 dyn = htab ? htab->root.dynamic_sections_created : false;
3601 sec = h->root.u.def.section;
3602 /* In these cases, we don't need the relocation value.
3603 We check specially because in some obscure cases
3604 sec->output_section will be NULL. */
3605 if (r_type == R_SH_GOTPC
3606 || r_type == R_SH_GOTPC_LOW16
3607 || r_type == R_SH_GOTPC_MEDLOW16
3608 || r_type == R_SH_GOTPC_MEDHI16
3609 || r_type == R_SH_GOTPC_HI16
3610 || ((r_type == R_SH_PLT32
3611 || r_type == R_SH_PLT_LOW16
3612 || r_type == R_SH_PLT_MEDLOW16
3613 || r_type == R_SH_PLT_MEDHI16
3614 || r_type == R_SH_PLT_HI16)
3615 && h->plt.offset != (bfd_vma) -1)
3616 || ((r_type == R_SH_GOT32
3617 || r_type == R_SH_GOT20
3618 || r_type == R_SH_GOTFUNCDESC
3619 || r_type == R_SH_GOTFUNCDESC20
3620 || r_type == R_SH_GOTOFFFUNCDESC
3621 || r_type == R_SH_GOTOFFFUNCDESC20
3622 || r_type == R_SH_FUNCDESC
3623 || r_type == R_SH_GOT_LOW16
3624 || r_type == R_SH_GOT_MEDLOW16
3625 || r_type == R_SH_GOT_MEDHI16
3626 || r_type == R_SH_GOT_HI16)
3627 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3628 bfd_link_pic (info),
3630 && (! bfd_link_pic (info)
3631 || (! info->symbolic && h->dynindx != -1)
3632 || !h->def_regular))
3633 /* The cases above are those in which relocation is
3634 overwritten in the switch block below. The cases
3635 below are those in which we must defer relocation
3636 to run-time, because we can't resolve absolute
3637 addresses when creating a shared library. */
3638 || (bfd_link_pic (info)
3639 && ((! info->symbolic && h->dynindx != -1)
3640 || !h->def_regular)
3641 && ((r_type == R_SH_DIR32
3642 && !h->forced_local)
3643 || (r_type == R_SH_REL32
3644 && !SYMBOL_CALLS_LOCAL (info, h)))
3645 && ((input_section->flags & SEC_ALLOC) != 0
3646 /* DWARF will emit R_SH_DIR32 relocations in its
3647 sections against symbols defined externally
3648 in shared libraries. We can't do anything
3649 with them here. */
3650 || ((input_section->flags & SEC_DEBUGGING) != 0
3651 && h->def_dynamic)))
3652 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3653 sections because such sections are not SEC_ALLOC and
3654 thus ld.so will not process them. */
3655 || (sec->output_section == NULL
3656 && ((input_section->flags & SEC_DEBUGGING) != 0
3657 && h->def_dynamic))
3658 || (sec->output_section == NULL
3659 && (sh_elf_hash_entry (h)->got_type == GOT_TLS_IE
3660 || sh_elf_hash_entry (h)->got_type == GOT_TLS_GD)))
3662 else if (sec->output_section != NULL)
3663 relocation = (h->root.u.def.value
3664 + sec->output_section->vma
3665 + sec->output_offset);
3666 else if (!bfd_link_relocatable (info)
3667 && (_bfd_elf_section_offset (output_bfd, info,
3668 input_section,
3669 rel->r_offset)
3670 != (bfd_vma) -1))
3672 _bfd_error_handler
3673 /* xgettext:c-format */
3674 (_("%pB(%pA+%#" PRIx64 "): "
3675 "unresolvable %s relocation against symbol `%s'"),
3676 input_bfd,
3677 input_section,
3678 (uint64_t) rel->r_offset,
3679 howto->name,
3680 h->root.root.string);
3681 return false;
3684 else if (h->root.type == bfd_link_hash_undefweak)
3685 resolved_to_zero = UNDEFWEAK_NO_DYNAMIC_RELOC (info, h);
3686 else if (info->unresolved_syms_in_objects == RM_IGNORE
3687 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3689 else if (!bfd_link_relocatable (info))
3690 info->callbacks->undefined_symbol
3691 (info, h->root.root.string, input_bfd, input_section,
3692 rel->r_offset,
3693 (info->unresolved_syms_in_objects == RM_DIAGNOSE
3694 && !info->warn_unresolved_syms)
3695 || ELF_ST_VISIBILITY (h->other));
3698 if (sec != NULL && discarded_section (sec))
3699 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3700 rel, 1, relend, howto, 0, contents);
3702 if (bfd_link_relocatable (info))
3703 continue;
3705 /* Check for inter-segment relocations in FDPIC files. Most
3706 relocations connect the relocation site to the location of
3707 the target symbol, but there are some exceptions below. */
3708 check_segment[0] = isec_segment;
3709 if (sec != NULL)
3710 check_segment[1] = sh_elf_osec_to_segment (output_bfd,
3711 sec->output_section);
3712 else
3713 check_segment[1] = -1;
3715 switch ((int) r_type)
3717 final_link_relocate:
3718 /* COFF relocs don't use the addend. The addend is used for
3719 R_SH_DIR32 to be compatible with other compilers. */
3720 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3721 contents, rel->r_offset,
3722 relocation, addend);
3723 break;
3725 case R_SH_IND12W:
3726 goto final_link_relocate;
3728 case R_SH_DIR8WPN:
3729 case R_SH_DIR8WPZ:
3730 case R_SH_DIR8WPL:
3731 /* If the reloc is against the start of this section, then
3732 the assembler has already taken care of it and the reloc
3733 is here only to assist in relaxing. If the reloc is not
3734 against the start of this section, then it's against an
3735 external symbol and we must deal with it ourselves. */
3736 if (input_section->output_section->vma + input_section->output_offset
3737 != relocation)
3739 int disp = (relocation
3740 - input_section->output_section->vma
3741 - input_section->output_offset
3742 - rel->r_offset);
3743 int mask = 0;
3744 switch (r_type)
3746 case R_SH_DIR8WPN:
3747 case R_SH_DIR8WPZ: mask = 1; break;
3748 case R_SH_DIR8WPL: mask = 3; break;
3749 default: mask = 0; break;
3751 if (disp & mask)
3753 _bfd_error_handler
3754 /* xgettext:c-format */
3755 (_("%pB: %#" PRIx64 ": fatal: "
3756 "unaligned branch target for relax-support relocation"),
3757 input_section->owner,
3758 (uint64_t) rel->r_offset);
3759 bfd_set_error (bfd_error_bad_value);
3760 return false;
3762 relocation -= 4;
3763 goto final_link_relocate;
3765 r = bfd_reloc_ok;
3766 break;
3768 default:
3769 bfd_set_error (bfd_error_bad_value);
3770 return false;
3772 case R_SH_DIR16:
3773 case R_SH_DIR8:
3774 case R_SH_DIR8U:
3775 case R_SH_DIR8S:
3776 case R_SH_DIR4U:
3777 goto final_link_relocate;
3779 case R_SH_DIR8UL:
3780 case R_SH_DIR4UL:
3781 if (relocation & 3)
3783 _bfd_error_handler
3784 /* xgettext:c-format */
3785 (_("%pB: %#" PRIx64 ": fatal: "
3786 "unaligned %s relocation %#" PRIx64),
3787 input_section->owner, (uint64_t) rel->r_offset,
3788 howto->name, (uint64_t) relocation);
3789 bfd_set_error (bfd_error_bad_value);
3790 return false;
3792 goto final_link_relocate;
3794 case R_SH_DIR8UW:
3795 case R_SH_DIR8SW:
3796 case R_SH_DIR4UW:
3797 if (relocation & 1)
3799 _bfd_error_handler
3800 /* xgettext:c-format */
3801 (_("%pB: %#" PRIx64 ": fatal: "
3802 "unaligned %s relocation %#" PRIx64 ""),
3803 input_section->owner,
3804 (uint64_t) rel->r_offset, howto->name,
3805 (uint64_t) relocation);
3806 bfd_set_error (bfd_error_bad_value);
3807 return false;
3809 goto final_link_relocate;
3811 case R_SH_PSHA:
3812 if ((signed int)relocation < -32
3813 || (signed int)relocation > 32)
3815 _bfd_error_handler
3816 /* xgettext:c-format */
3817 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHA relocation %" PRId64
3818 " not in range -32..32"),
3819 input_section->owner,
3820 (uint64_t) rel->r_offset,
3821 (int64_t) relocation);
3822 bfd_set_error (bfd_error_bad_value);
3823 return false;
3825 goto final_link_relocate;
3827 case R_SH_PSHL:
3828 if ((signed int)relocation < -16
3829 || (signed int)relocation > 16)
3831 _bfd_error_handler
3832 /* xgettext:c-format */
3833 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHL relocation %" PRId64
3834 " not in range -32..32"),
3835 input_section->owner,
3836 (uint64_t) rel->r_offset,
3837 (int64_t) relocation);
3838 bfd_set_error (bfd_error_bad_value);
3839 return false;
3841 goto final_link_relocate;
3843 case R_SH_DIR32:
3844 case R_SH_REL32:
3845 if (bfd_link_pic (info)
3846 && (h == NULL
3847 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3848 && !resolved_to_zero)
3849 || h->root.type != bfd_link_hash_undefweak)
3850 && r_symndx != STN_UNDEF
3851 && (input_section->flags & SEC_ALLOC) != 0
3852 && !is_vxworks_tls
3853 && (r_type == R_SH_DIR32
3854 || !SYMBOL_CALLS_LOCAL (info, h)))
3856 Elf_Internal_Rela outrel;
3857 bfd_byte *loc;
3858 bool skip, relocate;
3860 /* When generating a shared object, these relocations
3861 are copied into the output file to be resolved at run
3862 time. */
3864 if (sreloc == NULL)
3866 sreloc = _bfd_elf_get_dynamic_reloc_section
3867 (input_bfd, input_section, /*rela?*/ true);
3868 if (sreloc == NULL)
3869 return false;
3872 skip = false;
3873 relocate = false;
3875 outrel.r_offset =
3876 _bfd_elf_section_offset (output_bfd, info, input_section,
3877 rel->r_offset);
3878 if (outrel.r_offset == (bfd_vma) -1)
3879 skip = true;
3880 else if (outrel.r_offset == (bfd_vma) -2)
3881 skip = true, relocate = true;
3882 outrel.r_offset += (input_section->output_section->vma
3883 + input_section->output_offset);
3885 if (skip)
3886 memset (&outrel, 0, sizeof outrel);
3887 else if (r_type == R_SH_REL32)
3889 BFD_ASSERT (h != NULL && h->dynindx != -1);
3890 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
3891 outrel.r_addend
3892 = (howto->partial_inplace
3893 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3894 : addend);
3896 else if (fdpic_p
3897 && (h == NULL
3898 || ((info->symbolic || h->dynindx == -1)
3899 && h->def_regular)))
3901 int dynindx;
3903 BFD_ASSERT (sec != NULL);
3904 BFD_ASSERT (sec->output_section != NULL);
3905 dynindx = elf_section_data (sec->output_section)->dynindx;
3906 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
3907 outrel.r_addend = relocation;
3908 outrel.r_addend
3909 += (howto->partial_inplace
3910 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3911 : addend);
3912 outrel.r_addend -= sec->output_section->vma;
3914 else
3916 /* h->dynindx may be -1 if this symbol was marked to
3917 become local. */
3918 if (h == NULL
3919 || ((info->symbolic || h->dynindx == -1)
3920 && h->def_regular))
3922 relocate = howto->partial_inplace;
3923 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3925 else
3927 BFD_ASSERT (h->dynindx != -1);
3928 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
3930 outrel.r_addend = relocation;
3931 outrel.r_addend
3932 += (howto->partial_inplace
3933 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3934 : addend);
3937 loc = sreloc->contents;
3938 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3939 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3941 check_segment[0] = check_segment[1] = -1;
3943 /* If this reloc is against an external symbol, we do
3944 not want to fiddle with the addend. Otherwise, we
3945 need to include the symbol value so that it becomes
3946 an addend for the dynamic reloc. */
3947 if (! relocate)
3948 continue;
3950 else if (fdpic_p && !bfd_link_pic (info)
3951 && r_type == R_SH_DIR32
3952 && (input_section->flags & SEC_ALLOC) != 0)
3954 bfd_vma offset;
3956 BFD_ASSERT (htab);
3958 if (sh_elf_osec_readonly_p (output_bfd,
3959 input_section->output_section))
3961 _bfd_error_handler
3962 /* xgettext:c-format */
3963 (_("%pB(%pA+%#" PRIx64 "): "
3964 "cannot emit fixup to `%s' in read-only section"),
3965 input_bfd,
3966 input_section,
3967 (uint64_t) rel->r_offset,
3968 symname);
3969 return false;
3972 offset = _bfd_elf_section_offset (output_bfd, info,
3973 input_section, rel->r_offset);
3974 if (offset != (bfd_vma)-1)
3975 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3976 input_section->output_section->vma
3977 + input_section->output_offset
3978 + rel->r_offset);
3980 check_segment[0] = check_segment[1] = -1;
3982 /* We don't want warnings for non-NULL tests on undefined weak
3983 symbols. */
3984 else if (r_type == R_SH_REL32
3985 && h
3986 && h->root.type == bfd_link_hash_undefweak)
3987 check_segment[0] = check_segment[1] = -1;
3988 goto final_link_relocate;
3990 case R_SH_GOTPLT32:
3991 /* Relocation is to the entry for this symbol in the
3992 procedure linkage table. */
3994 if (h == NULL
3995 || h->forced_local
3996 || ! bfd_link_pic (info)
3997 || info->symbolic
3998 || h->dynindx == -1
3999 || h->plt.offset == (bfd_vma) -1
4000 || h->got.offset != (bfd_vma) -1)
4001 goto force_got;
4003 /* Relocation is to the entry for this symbol in the global
4004 offset table extension for the procedure linkage table. */
4006 BFD_ASSERT (htab);
4007 BFD_ASSERT (sgotplt != NULL);
4008 relocation = (sgotplt->output_offset
4009 + (get_plt_index (htab->plt_info, h->plt.offset)
4010 + 3) * 4);
4012 #ifdef GOT_BIAS
4013 relocation -= GOT_BIAS;
4014 #endif
4016 goto final_link_relocate;
4018 force_got:
4019 case R_SH_GOT32:
4020 case R_SH_GOT20:
4021 /* Relocation is to the entry for this symbol in the global
4022 offset table. */
4024 BFD_ASSERT (htab);
4025 BFD_ASSERT (sgot != NULL);
4026 check_segment[0] = check_segment[1] = -1;
4028 if (h != NULL)
4030 bool dyn;
4032 off = h->got.offset;
4033 BFD_ASSERT (off != (bfd_vma) -1);
4035 dyn = htab->root.dynamic_sections_created;
4036 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4037 bfd_link_pic (info),
4039 || (bfd_link_pic (info)
4040 && SYMBOL_REFERENCES_LOCAL (info, h))
4041 || ((ELF_ST_VISIBILITY (h->other)
4042 || resolved_to_zero)
4043 && h->root.type == bfd_link_hash_undefweak))
4045 /* This is actually a static link, or it is a
4046 -Bsymbolic link and the symbol is defined
4047 locally, or the symbol was forced to be local
4048 because of a version file. We must initialize
4049 this entry in the global offset table. Since the
4050 offset must always be a multiple of 4, we use the
4051 least significant bit to record whether we have
4052 initialized it already.
4054 When doing a dynamic link, we create a .rela.got
4055 relocation entry to initialize the value. This
4056 is done in the finish_dynamic_symbol routine. */
4057 if ((off & 1) != 0)
4058 off &= ~1;
4059 else
4061 bfd_put_32 (output_bfd, relocation,
4062 sgot->contents + off);
4063 h->got.offset |= 1;
4065 /* If we initialize the GOT entry here with a valid
4066 symbol address, also add a fixup. */
4067 if (fdpic_p && !bfd_link_pic (info)
4068 && sh_elf_hash_entry (h)->got_type == GOT_NORMAL
4069 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4070 || h->root.type != bfd_link_hash_undefweak))
4071 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4072 sgot->output_section->vma
4073 + sgot->output_offset
4074 + off);
4078 relocation = sh_elf_got_offset (htab) + off;
4080 else
4082 BFD_ASSERT (local_got_offsets != NULL
4083 && local_got_offsets[r_symndx] != (bfd_vma) -1);
4085 off = local_got_offsets[r_symndx];
4087 /* The offset must always be a multiple of 4. We use
4088 the least significant bit to record whether we have
4089 already generated the necessary reloc. */
4090 if ((off & 1) != 0)
4091 off &= ~1;
4092 else
4094 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4096 if (bfd_link_pic (info))
4098 Elf_Internal_Rela outrel;
4099 bfd_byte *loc;
4101 outrel.r_offset = (sgot->output_section->vma
4102 + sgot->output_offset
4103 + off);
4104 if (fdpic_p)
4106 int dynindx
4107 = elf_section_data (sec->output_section)->dynindx;
4108 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
4109 outrel.r_addend = relocation;
4110 outrel.r_addend -= sec->output_section->vma;
4112 else
4114 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
4115 outrel.r_addend = relocation;
4117 loc = srelgot->contents;
4118 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4119 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4121 else if (fdpic_p
4122 && (sh_elf_local_got_type (input_bfd) [r_symndx]
4123 == GOT_NORMAL))
4124 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4125 sgot->output_section->vma
4126 + sgot->output_offset
4127 + off);
4129 local_got_offsets[r_symndx] |= 1;
4132 relocation = sh_elf_got_offset (htab) + off;
4135 #ifdef GOT_BIAS
4136 relocation -= GOT_BIAS;
4137 #endif
4139 if (r_type == R_SH_GOT20)
4141 r = install_movi20_field (output_bfd, relocation + addend,
4142 input_bfd, input_section, contents,
4143 rel->r_offset);
4144 break;
4146 else
4147 goto final_link_relocate;
4149 case R_SH_GOTOFF:
4150 case R_SH_GOTOFF20:
4151 /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
4152 we place at the start of the .got.plt section. This is the same
4153 as the start of the output .got section, unless there are function
4154 descriptors in front of it. */
4155 BFD_ASSERT (htab);
4156 BFD_ASSERT (sgotplt != NULL);
4157 check_segment[0] = got_segment;
4158 relocation -= sgotplt->output_section->vma + sgotplt->output_offset
4159 + htab->root.hgot->root.u.def.value;
4161 #ifdef GOT_BIAS
4162 relocation -= GOT_BIAS;
4163 #endif
4165 addend = rel->r_addend;
4167 if (r_type == R_SH_GOTOFF20)
4169 r = install_movi20_field (output_bfd, relocation + addend,
4170 input_bfd, input_section, contents,
4171 rel->r_offset);
4172 break;
4174 else
4175 goto final_link_relocate;
4177 case R_SH_GOTPC:
4178 /* Use global offset table as symbol value. */
4180 BFD_ASSERT (sgotplt != NULL);
4181 relocation = sgotplt->output_section->vma + sgotplt->output_offset;
4183 #ifdef GOT_BIAS
4184 relocation += GOT_BIAS;
4185 #endif
4187 addend = rel->r_addend;
4189 goto final_link_relocate;
4191 case R_SH_PLT32:
4192 /* Relocation is to the entry for this symbol in the
4193 procedure linkage table. */
4195 /* Resolve a PLT reloc against a local symbol directly,
4196 without using the procedure linkage table. */
4197 if (h == NULL)
4198 goto final_link_relocate;
4200 /* We don't want to warn on calls to undefined weak symbols,
4201 as calls to them must be protected by non-NULL tests
4202 anyway, and unprotected calls would invoke undefined
4203 behavior. */
4204 if (h->root.type == bfd_link_hash_undefweak)
4205 check_segment[0] = check_segment[1] = -1;
4207 if (h->forced_local)
4208 goto final_link_relocate;
4210 if (h->plt.offset == (bfd_vma) -1)
4212 /* We didn't make a PLT entry for this symbol. This
4213 happens when statically linking PIC code, or when
4214 using -Bsymbolic. */
4215 goto final_link_relocate;
4218 BFD_ASSERT (splt != NULL);
4219 check_segment[1] = plt_segment;
4220 relocation = (splt->output_section->vma
4221 + splt->output_offset
4222 + h->plt.offset);
4224 addend = rel->r_addend;
4226 goto final_link_relocate;
4228 /* Relocation is to the canonical function descriptor for this
4229 symbol, possibly via the GOT. Initialize the GOT
4230 entry and function descriptor if necessary. */
4231 case R_SH_GOTFUNCDESC:
4232 case R_SH_GOTFUNCDESC20:
4233 case R_SH_FUNCDESC:
4235 int dynindx = -1;
4236 asection *reloc_section;
4237 bfd_vma reloc_offset;
4238 int reloc_type = R_SH_FUNCDESC;
4240 BFD_ASSERT (htab);
4242 check_segment[0] = check_segment[1] = -1;
4244 /* FIXME: See what FRV does for global symbols in the
4245 executable, with --export-dynamic. Do they need ld.so
4246 to allocate official descriptors? See what this code
4247 does. */
4249 relocation = 0;
4250 addend = 0;
4252 if (r_type == R_SH_FUNCDESC)
4254 reloc_section = input_section;
4255 reloc_offset = rel->r_offset;
4257 else
4259 reloc_section = sgot;
4261 if (h != NULL)
4262 reloc_offset = h->got.offset;
4263 else
4265 BFD_ASSERT (local_got_offsets != NULL);
4266 reloc_offset = local_got_offsets[r_symndx];
4268 BFD_ASSERT (reloc_offset != MINUS_ONE);
4270 if (reloc_offset & 1)
4272 reloc_offset &= ~1;
4273 goto funcdesc_done_got;
4277 if (h && h->root.type == bfd_link_hash_undefweak
4278 && (SYMBOL_CALLS_LOCAL (info, h)
4279 || !htab->root.dynamic_sections_created))
4280 /* Undefined weak symbol which will not be dynamically
4281 resolved later; leave it at zero. */
4282 goto funcdesc_leave_zero;
4283 else if (SYMBOL_CALLS_LOCAL (info, h)
4284 && ! SYMBOL_FUNCDESC_LOCAL (info, h))
4286 /* If the symbol needs a non-local function descriptor
4287 but binds locally (i.e., its visibility is
4288 protected), emit a dynamic relocation decayed to
4289 section+offset. This is an optimization; the dynamic
4290 linker would resolve our function descriptor request
4291 to our copy of the function anyway. */
4292 dynindx = elf_section_data (h->root.u.def.section
4293 ->output_section)->dynindx;
4294 relocation += h->root.u.def.section->output_offset
4295 + h->root.u.def.value;
4297 else if (! SYMBOL_FUNCDESC_LOCAL (info, h))
4299 /* If the symbol is dynamic and there will be dynamic
4300 symbol resolution because we are or are linked with a
4301 shared library, emit a FUNCDESC relocation such that
4302 the dynamic linker will allocate the function
4303 descriptor. */
4304 BFD_ASSERT (h->dynindx != -1);
4305 dynindx = h->dynindx;
4307 else
4309 bfd_vma offset;
4311 /* Otherwise, we know we have a private function
4312 descriptor, so reference it directly. */
4313 reloc_type = R_SH_DIR32;
4314 dynindx = elf_section_data (htab->sfuncdesc
4315 ->output_section)->dynindx;
4317 if (h)
4319 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4320 BFD_ASSERT (offset != MINUS_ONE);
4321 if ((offset & 1) == 0)
4323 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4324 offset, NULL, 0))
4325 return false;
4326 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4329 else
4331 union gotref *local_funcdesc;
4333 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4334 offset = local_funcdesc[r_symndx].offset;
4335 BFD_ASSERT (offset != MINUS_ONE);
4336 if ((offset & 1) == 0)
4338 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4339 offset, sec,
4340 sym->st_value))
4341 return false;
4342 local_funcdesc[r_symndx].offset |= 1;
4346 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4349 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
4351 bfd_vma offset;
4353 if (sh_elf_osec_readonly_p (output_bfd,
4354 reloc_section->output_section))
4356 _bfd_error_handler
4357 /* xgettext:c-format */
4358 (_("%pB(%pA+%#" PRIx64 "): "
4359 "cannot emit fixup to `%s' in read-only section"),
4360 input_bfd,
4361 input_section,
4362 (uint64_t) rel->r_offset,
4363 symname);
4364 return false;
4367 offset = _bfd_elf_section_offset (output_bfd, info,
4368 reloc_section, reloc_offset);
4370 if (offset != (bfd_vma)-1)
4371 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4372 offset
4373 + reloc_section->output_section->vma
4374 + reloc_section->output_offset);
4376 else if ((reloc_section->output_section->flags
4377 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
4379 bfd_vma offset;
4381 if (sh_elf_osec_readonly_p (output_bfd,
4382 reloc_section->output_section))
4384 info->callbacks->warning
4385 (info,
4386 _("cannot emit dynamic relocations in read-only section"),
4387 symname, input_bfd, reloc_section, reloc_offset);
4388 return false;
4391 offset = _bfd_elf_section_offset (output_bfd, info,
4392 reloc_section, reloc_offset);
4394 if (offset != (bfd_vma)-1)
4395 sh_elf_add_dyn_reloc (output_bfd, srelgot,
4396 offset
4397 + reloc_section->output_section->vma
4398 + reloc_section->output_offset,
4399 reloc_type, dynindx, relocation);
4401 if (r_type == R_SH_FUNCDESC)
4403 r = bfd_reloc_ok;
4404 break;
4406 else
4408 relocation = 0;
4409 goto funcdesc_leave_zero;
4413 if (SYMBOL_FUNCDESC_LOCAL (info, h))
4414 relocation += htab->sfuncdesc->output_section->vma;
4415 funcdesc_leave_zero:
4416 if (r_type != R_SH_FUNCDESC)
4418 bfd_put_32 (output_bfd, relocation,
4419 reloc_section->contents + reloc_offset);
4420 if (h != NULL)
4421 h->got.offset |= 1;
4422 else
4423 local_got_offsets[r_symndx] |= 1;
4425 funcdesc_done_got:
4427 relocation = sh_elf_got_offset (htab) + reloc_offset;
4428 #ifdef GOT_BIAS
4429 relocation -= GOT_BIAS;
4430 #endif
4432 if (r_type == R_SH_GOTFUNCDESC20)
4434 r = install_movi20_field (output_bfd, relocation + addend,
4435 input_bfd, input_section, contents,
4436 rel->r_offset);
4437 break;
4439 else
4440 goto final_link_relocate;
4442 break;
4444 case R_SH_GOTOFFFUNCDESC:
4445 case R_SH_GOTOFFFUNCDESC20:
4446 /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
4447 executable and --export-dynamic. If such symbols get
4448 ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
4449 for them. */
4450 BFD_ASSERT (htab);
4452 check_segment[0] = check_segment[1] = -1;
4453 relocation = 0;
4454 addend = rel->r_addend;
4456 if (h && (h->root.type == bfd_link_hash_undefweak
4457 || !SYMBOL_FUNCDESC_LOCAL (info, h)))
4459 _bfd_error_handler
4460 /* xgettext:c-format */
4461 (_("%pB(%pA+%#" PRIx64 "): "
4462 "%s relocation against external symbol \"%s\""),
4463 input_bfd, input_section, (uint64_t) rel->r_offset,
4464 howto->name, h->root.root.string);
4465 return false;
4467 else
4469 bfd_vma offset;
4471 /* Otherwise, we know we have a private function
4472 descriptor, so reference it directly. */
4473 if (h)
4475 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4476 BFD_ASSERT (offset != MINUS_ONE);
4477 if ((offset & 1) == 0)
4479 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4480 offset, NULL, 0))
4481 return false;
4482 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4485 else
4487 union gotref *local_funcdesc;
4489 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4490 offset = local_funcdesc[r_symndx].offset;
4491 BFD_ASSERT (offset != MINUS_ONE);
4492 if ((offset & 1) == 0)
4494 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4495 offset, sec,
4496 sym->st_value))
4497 return false;
4498 local_funcdesc[r_symndx].offset |= 1;
4502 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4505 relocation -= (htab->root.hgot->root.u.def.value
4506 + sgotplt->output_offset);
4507 #ifdef GOT_BIAS
4508 relocation -= GOT_BIAS;
4509 #endif
4511 if (r_type == R_SH_GOTOFFFUNCDESC20)
4513 r = install_movi20_field (output_bfd, relocation + addend,
4514 input_bfd, input_section, contents,
4515 rel->r_offset);
4516 break;
4518 else
4519 goto final_link_relocate;
4521 case R_SH_LOOP_START:
4523 static bfd_vma start, end;
4525 start = (relocation + rel->r_addend
4526 - (sec->output_section->vma + sec->output_offset));
4527 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4528 rel->r_offset, sec, start, end);
4529 break;
4531 case R_SH_LOOP_END:
4532 end = (relocation + rel->r_addend
4533 - (sec->output_section->vma + sec->output_offset));
4534 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4535 rel->r_offset, sec, start, end);
4536 break;
4539 case R_SH_TLS_GD_32:
4540 case R_SH_TLS_IE_32:
4541 BFD_ASSERT (htab);
4542 check_segment[0] = check_segment[1] = -1;
4543 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4544 got_type = GOT_UNKNOWN;
4545 if (h == NULL && local_got_offsets)
4546 got_type = sh_elf_local_got_type (input_bfd) [r_symndx];
4547 else if (h != NULL)
4549 got_type = sh_elf_hash_entry (h)->got_type;
4550 if (! bfd_link_pic (info)
4551 && (h->dynindx == -1
4552 || h->def_regular))
4553 r_type = R_SH_TLS_LE_32;
4556 if (r_type == R_SH_TLS_GD_32 && got_type == GOT_TLS_IE)
4557 r_type = R_SH_TLS_IE_32;
4559 if (r_type == R_SH_TLS_LE_32)
4561 bfd_vma offset;
4562 unsigned short insn;
4564 if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4566 /* GD->LE transition:
4567 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4568 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4569 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4570 We change it into:
4571 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4572 nop; nop; ...
4573 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4575 offset = rel->r_offset;
4576 if (offset < 16)
4578 _bfd_error_handler
4579 /* xgettext:c-format */
4580 (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64),
4581 input_bfd, input_section, (uint64_t) offset);
4582 return false;
4585 /* Size of GD instructions is 16 or 18. */
4586 offset -= 16;
4587 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4588 if ((insn & 0xff00) == 0xc700)
4590 BFD_ASSERT (offset >= 2);
4591 offset -= 2;
4592 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4595 if ((insn & 0xff00) != 0xd400)
4596 _bfd_error_handler
4597 /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */
4598 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd4?\?)"),
4599 input_bfd, input_section, (uint64_t) offset, (int) insn);
4601 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4603 if ((insn & 0xff00) != 0xc700)
4604 _bfd_error_handler
4605 /* xgettext:c-format */
4606 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xc7?\?)"),
4607 input_bfd, input_section, (uint64_t) offset, (int) insn);
4609 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4610 if ((insn & 0xff00) != 0xd100)
4611 _bfd_error_handler
4612 /* xgettext:c-format */
4613 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd1?\?)"),
4614 input_bfd, input_section, (uint64_t) offset, (int) insn);
4616 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4617 if (insn != 0x310c)
4618 _bfd_error_handler
4619 /* xgettext:c-format */
4620 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x310c)"),
4621 input_bfd, input_section, (uint64_t) offset, (int) insn);
4623 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4624 if (insn != 0x410b)
4625 _bfd_error_handler
4626 /* xgettext:c-format */
4627 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x410b)"),
4628 input_bfd, input_section, (uint64_t) offset, (int) insn);
4630 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4631 if (insn != 0x34cc)
4632 _bfd_error_handler
4633 /* xgettext:c-format */
4634 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x34cc)"),
4635 input_bfd, input_section, (uint64_t) offset, (int) insn);
4637 bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4638 bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4639 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4640 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4641 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4643 else
4645 int target;
4647 /* IE->LE transition:
4648 mov.l 1f,r0;
4649 stc gbr,rN;
4650 mov.l @(r0,r12),rM;
4651 bra 2f;
4652 add ...;
4653 .align 2;
4654 1: x@GOTTPOFF;
4656 We change it into:
4657 mov.l .Ln,rM;
4658 stc gbr,rN;
4659 nop;
4660 ...;
4661 1: x@TPOFF;
4662 2:. */
4664 offset = rel->r_offset;
4665 if (offset < 16)
4667 _bfd_error_handler
4668 /* xgettext:c-format */
4669 (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64),
4670 input_bfd, input_section, (uint64_t) offset);
4671 return false;
4674 /* Size of IE instructions is 10 or 12. */
4675 offset -= 10;
4676 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4677 if ((insn & 0xf0ff) == 0x0012)
4679 BFD_ASSERT (offset >= 2);
4680 offset -= 2;
4681 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4684 if ((insn & 0xff00) != 0xd000)
4685 _bfd_error_handler
4686 /* xgettext:c-format */
4687 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd0??: mov.l)"),
4688 input_bfd, input_section, (uint64_t) offset, (int) insn);
4690 target = insn & 0x00ff;
4692 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4693 if ((insn & 0xf0ff) != 0x0012)
4694 _bfd_error_handler
4695 /* xgettext:c-format */
4696 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?12: stc)"),
4697 input_bfd, input_section, (uint64_t) (offset + 2), (int) insn);
4699 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4700 if ((insn & 0xf0ff) != 0x00ce)
4701 _bfd_error_handler
4702 /* xgettext:c-format */
4703 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?ce: mov.l)"),
4704 input_bfd, input_section, (uint64_t) (offset + 4), (int) insn);
4706 insn = 0xd000 | (insn & 0x0f00) | target;
4707 bfd_put_16 (output_bfd, insn, contents + offset + 0);
4708 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4711 bfd_put_32 (output_bfd, tpoff (info, relocation),
4712 contents + rel->r_offset);
4713 continue;
4716 if (sgot == NULL || sgotplt == NULL)
4717 abort ();
4719 if (h != NULL)
4720 off = h->got.offset;
4721 else
4723 if (local_got_offsets == NULL)
4724 abort ();
4726 off = local_got_offsets[r_symndx];
4729 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4730 if (r_type == R_SH_TLS_IE_32
4731 && ! htab->root.dynamic_sections_created)
4733 off &= ~1;
4734 bfd_put_32 (output_bfd, tpoff (info, relocation),
4735 sgot->contents + off);
4736 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4737 contents + rel->r_offset);
4738 continue;
4741 if ((off & 1) != 0)
4742 off &= ~1;
4743 else
4745 Elf_Internal_Rela outrel;
4746 bfd_byte *loc;
4747 int dr_type, indx;
4749 outrel.r_offset = (sgot->output_section->vma
4750 + sgot->output_offset + off);
4752 if (h == NULL || h->dynindx == -1)
4753 indx = 0;
4754 else
4755 indx = h->dynindx;
4757 dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4758 R_SH_TLS_TPOFF32);
4759 if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4760 outrel.r_addend = relocation - dtpoff_base (info);
4761 else
4762 outrel.r_addend = 0;
4763 outrel.r_info = ELF32_R_INFO (indx, dr_type);
4764 loc = srelgot->contents;
4765 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4766 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4768 if (r_type == R_SH_TLS_GD_32)
4770 if (indx == 0)
4772 bfd_put_32 (output_bfd,
4773 relocation - dtpoff_base (info),
4774 sgot->contents + off + 4);
4776 else
4778 outrel.r_info = ELF32_R_INFO (indx,
4779 R_SH_TLS_DTPOFF32);
4780 outrel.r_offset += 4;
4781 outrel.r_addend = 0;
4782 srelgot->reloc_count++;
4783 loc += sizeof (Elf32_External_Rela);
4784 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4788 if (h != NULL)
4789 h->got.offset |= 1;
4790 else
4791 local_got_offsets[r_symndx] |= 1;
4794 if (off >= (bfd_vma) -2)
4795 abort ();
4797 if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4798 relocation = sh_elf_got_offset (htab) + off;
4799 else
4801 bfd_vma offset;
4802 unsigned short insn;
4804 /* GD->IE transition:
4805 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4806 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4807 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4808 We change it into:
4809 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4810 nop; nop; bra 3f; nop; .align 2;
4811 1: .long x@TPOFF; 2:...; 3:. */
4813 offset = rel->r_offset;
4814 if (offset < 16)
4816 _bfd_error_handler
4817 /* xgettext:c-format */
4818 (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64),
4819 input_bfd, input_section, (uint64_t) offset);
4820 return false;
4823 /* Size of GD instructions is 16 or 18. */
4824 offset -= 16;
4825 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4826 if ((insn & 0xff00) == 0xc700)
4828 BFD_ASSERT (offset >= 2);
4829 offset -= 2;
4830 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4833 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4835 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4836 bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4838 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4839 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4840 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4841 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4842 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4843 BFD_ASSERT (insn == 0x310c);
4844 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4845 BFD_ASSERT (insn == 0x410b);
4846 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4847 BFD_ASSERT (insn == 0x34cc);
4849 bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4850 bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4851 bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4852 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4853 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4855 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4856 contents + rel->r_offset);
4858 continue;
4861 addend = rel->r_addend;
4863 goto final_link_relocate;
4865 case R_SH_TLS_LD_32:
4866 BFD_ASSERT (htab);
4867 check_segment[0] = check_segment[1] = -1;
4868 if (! bfd_link_pic (info))
4870 bfd_vma offset;
4871 unsigned short insn;
4873 /* LD->LE transition:
4874 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4875 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4876 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4877 We change it into:
4878 stc gbr,r0; nop; nop; nop;
4879 nop; nop; bra 3f; ...; 3:. */
4881 offset = rel->r_offset;
4882 if (offset < 16)
4884 _bfd_error_handler
4885 /* xgettext:c-format */
4886 (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64),
4887 input_bfd, input_section, (uint64_t) offset);
4888 return false;
4891 /* Size of LD instructions is 16 or 18. */
4892 offset -= 16;
4893 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4894 if ((insn & 0xff00) == 0xc700)
4896 BFD_ASSERT (offset >= 2);
4897 offset -= 2;
4898 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4901 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4902 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4903 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4904 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4905 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4906 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4907 BFD_ASSERT (insn == 0x310c);
4908 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4909 BFD_ASSERT (insn == 0x410b);
4910 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4911 BFD_ASSERT (insn == 0x34cc);
4913 bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
4914 bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
4915 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4916 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4917 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4918 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4920 continue;
4923 if (sgot == NULL || sgotplt == NULL)
4924 abort ();
4926 off = htab->tls_ldm_got.offset;
4927 if (off & 1)
4928 off &= ~1;
4929 else
4931 Elf_Internal_Rela outrel;
4932 bfd_byte *loc;
4934 outrel.r_offset = (sgot->output_section->vma
4935 + sgot->output_offset + off);
4936 outrel.r_addend = 0;
4937 outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
4938 loc = srelgot->contents;
4939 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4940 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4941 htab->tls_ldm_got.offset |= 1;
4944 relocation = sh_elf_got_offset (htab) + off;
4945 addend = rel->r_addend;
4947 goto final_link_relocate;
4949 case R_SH_TLS_LDO_32:
4950 check_segment[0] = check_segment[1] = -1;
4951 if (! bfd_link_pic (info))
4952 relocation = tpoff (info, relocation);
4953 else
4954 relocation -= dtpoff_base (info);
4956 addend = rel->r_addend;
4957 goto final_link_relocate;
4959 case R_SH_TLS_LE_32:
4961 int indx;
4962 Elf_Internal_Rela outrel;
4963 bfd_byte *loc;
4965 check_segment[0] = check_segment[1] = -1;
4967 if (!bfd_link_dll (info))
4969 relocation = tpoff (info, relocation);
4970 addend = rel->r_addend;
4971 goto final_link_relocate;
4974 if (sreloc == NULL)
4976 sreloc = _bfd_elf_get_dynamic_reloc_section
4977 (input_bfd, input_section, /*rela?*/ true);
4978 if (sreloc == NULL)
4979 return false;
4982 if (h == NULL || h->dynindx == -1)
4983 indx = 0;
4984 else
4985 indx = h->dynindx;
4987 outrel.r_offset = (input_section->output_section->vma
4988 + input_section->output_offset
4989 + rel->r_offset);
4990 outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
4991 if (indx == 0)
4992 outrel.r_addend = relocation - dtpoff_base (info);
4993 else
4994 outrel.r_addend = 0;
4996 loc = sreloc->contents;
4997 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4998 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4999 continue;
5003 relocation_done:
5004 if (fdpic_p && check_segment[0] != (unsigned) -1
5005 && check_segment[0] != check_segment[1])
5007 /* We don't want duplicate errors for undefined symbols. */
5008 if (!h || h->root.type != bfd_link_hash_undefined)
5010 if (bfd_link_pic (info))
5012 info->callbacks->einfo
5013 /* xgettext:c-format */
5014 (_("%X%H: relocation to \"%s\" references a different segment\n"),
5015 input_bfd, input_section, rel->r_offset, symname);
5016 return false;
5018 else
5019 info->callbacks->einfo
5020 /* xgettext:c-format */
5021 (_("%H: warning: relocation to \"%s\" references a different segment\n"),
5022 input_bfd, input_section, rel->r_offset, symname);
5025 elf_elfheader (output_bfd)->e_flags |= EF_SH_PIC;
5028 if (r != bfd_reloc_ok)
5030 switch (r)
5032 default:
5033 case bfd_reloc_outofrange:
5034 abort ();
5035 case bfd_reloc_overflow:
5037 const char *name;
5039 if (h != NULL)
5040 name = NULL;
5041 else
5043 name = (bfd_elf_string_from_elf_section
5044 (input_bfd, symtab_hdr->sh_link, sym->st_name));
5045 if (name == NULL)
5046 return false;
5047 if (*name == '\0')
5048 name = bfd_section_name (sec);
5050 (*info->callbacks->reloc_overflow)
5051 (info, (h ? &h->root : NULL), name, howto->name,
5052 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
5054 break;
5059 return true;
5062 /* This is a version of bfd_generic_get_relocated_section_contents
5063 which uses sh_elf_relocate_section. */
5065 static bfd_byte *
5066 sh_elf_get_relocated_section_contents (bfd *output_bfd,
5067 struct bfd_link_info *link_info,
5068 struct bfd_link_order *link_order,
5069 bfd_byte *data,
5070 bool relocatable,
5071 asymbol **symbols)
5073 Elf_Internal_Shdr *symtab_hdr;
5074 asection *input_section = link_order->u.indirect.section;
5075 bfd *input_bfd = input_section->owner;
5076 asection **sections = NULL;
5077 Elf_Internal_Rela *internal_relocs = NULL;
5078 Elf_Internal_Sym *isymbuf = NULL;
5080 /* We only need to handle the case of relaxing, or of having a
5081 particular set of section contents, specially. */
5082 if (relocatable
5083 || elf_section_data (input_section)->this_hdr.contents == NULL)
5084 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
5085 link_order, data,
5086 relocatable,
5087 symbols);
5089 symtab_hdr = &elf_symtab_hdr (input_bfd);
5091 bfd_byte *orig_data = data;
5092 if (data == NULL)
5094 data = bfd_malloc (input_section->size);
5095 if (data == NULL)
5096 return NULL;
5098 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
5099 (size_t) input_section->size);
5101 if ((input_section->flags & SEC_RELOC) != 0
5102 && input_section->reloc_count > 0)
5104 asection **secpp;
5105 Elf_Internal_Sym *isym, *isymend;
5106 bfd_size_type amt;
5108 internal_relocs = (_bfd_elf_link_read_relocs
5109 (input_bfd, input_section, NULL,
5110 (Elf_Internal_Rela *) NULL, false));
5111 if (internal_relocs == NULL)
5112 goto error_return;
5114 if (symtab_hdr->sh_info != 0)
5116 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5117 if (isymbuf == NULL)
5118 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
5119 symtab_hdr->sh_info, 0,
5120 NULL, NULL, NULL);
5121 if (isymbuf == NULL)
5122 goto error_return;
5125 amt = symtab_hdr->sh_info;
5126 amt *= sizeof (asection *);
5127 sections = (asection **) bfd_malloc (amt);
5128 if (sections == NULL && amt != 0)
5129 goto error_return;
5131 isymend = isymbuf + symtab_hdr->sh_info;
5132 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
5134 asection *isec;
5136 if (isym->st_shndx == SHN_UNDEF)
5137 isec = bfd_und_section_ptr;
5138 else if (isym->st_shndx == SHN_ABS)
5139 isec = bfd_abs_section_ptr;
5140 else if (isym->st_shndx == SHN_COMMON)
5141 isec = bfd_com_section_ptr;
5142 else
5143 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
5145 *secpp = isec;
5148 if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
5149 input_section, data, internal_relocs,
5150 isymbuf, sections))
5151 goto error_return;
5153 free (sections);
5154 if (symtab_hdr->contents != (unsigned char *) isymbuf)
5155 free (isymbuf);
5156 if (elf_section_data (input_section)->relocs != internal_relocs)
5157 free (internal_relocs);
5160 return data;
5162 error_return:
5163 free (sections);
5164 if (symtab_hdr->contents != (unsigned char *) isymbuf)
5165 free (isymbuf);
5166 if (elf_section_data (input_section)->relocs != internal_relocs)
5167 free (internal_relocs);
5168 if (orig_data == NULL)
5169 free (data);
5170 return NULL;
5173 /* Return the base VMA address which should be subtracted from real addresses
5174 when resolving @dtpoff relocation.
5175 This is PT_TLS segment p_vaddr. */
5177 static bfd_vma
5178 dtpoff_base (struct bfd_link_info *info)
5180 /* If tls_sec is NULL, we should have signalled an error already. */
5181 if (elf_hash_table (info)->tls_sec == NULL)
5182 return 0;
5183 return elf_hash_table (info)->tls_sec->vma;
5186 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
5188 static bfd_vma
5189 tpoff (struct bfd_link_info *info, bfd_vma address)
5191 /* If tls_sec is NULL, we should have signalled an error already. */
5192 if (elf_hash_table (info)->tls_sec == NULL)
5193 return 0;
5194 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
5195 structure which has 2 pointer fields. */
5196 return (address - elf_hash_table (info)->tls_sec->vma
5197 + align_power ((bfd_vma) 8,
5198 elf_hash_table (info)->tls_sec->alignment_power));
5201 static asection *
5202 sh_elf_gc_mark_hook (asection *sec,
5203 struct bfd_link_info *info,
5204 Elf_Internal_Rela *rel,
5205 struct elf_link_hash_entry *h,
5206 Elf_Internal_Sym *sym)
5208 if (h != NULL)
5209 switch (ELF32_R_TYPE (rel->r_info))
5211 case R_SH_GNU_VTINHERIT:
5212 case R_SH_GNU_VTENTRY:
5213 return NULL;
5216 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5219 /* Copy the extra info we tack onto an elf_link_hash_entry. */
5221 static void
5222 sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
5223 struct elf_link_hash_entry *dir,
5224 struct elf_link_hash_entry *ind)
5226 struct elf_sh_link_hash_entry *edir, *eind;
5228 edir = (struct elf_sh_link_hash_entry *) dir;
5229 eind = (struct elf_sh_link_hash_entry *) ind;
5231 edir->gotplt_refcount = eind->gotplt_refcount;
5232 eind->gotplt_refcount = 0;
5233 edir->funcdesc.refcount += eind->funcdesc.refcount;
5234 eind->funcdesc.refcount = 0;
5235 edir->abs_funcdesc_refcount += eind->abs_funcdesc_refcount;
5236 eind->abs_funcdesc_refcount = 0;
5238 if (ind->root.type == bfd_link_hash_indirect
5239 && dir->got.refcount <= 0)
5241 edir->got_type = eind->got_type;
5242 eind->got_type = GOT_UNKNOWN;
5245 if (ind->root.type != bfd_link_hash_indirect
5246 && dir->dynamic_adjusted)
5248 /* If called to transfer flags for a weakdef during processing
5249 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
5250 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
5251 if (dir->versioned != versioned_hidden)
5252 dir->ref_dynamic |= ind->ref_dynamic;
5253 dir->ref_regular |= ind->ref_regular;
5254 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
5255 dir->needs_plt |= ind->needs_plt;
5257 else
5258 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
5261 static int
5262 sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
5263 int is_local)
5265 if (bfd_link_pic (info))
5266 return r_type;
5268 switch (r_type)
5270 case R_SH_TLS_GD_32:
5271 case R_SH_TLS_IE_32:
5272 if (is_local)
5273 return R_SH_TLS_LE_32;
5274 return R_SH_TLS_IE_32;
5275 case R_SH_TLS_LD_32:
5276 return R_SH_TLS_LE_32;
5279 return r_type;
5282 /* Look through the relocs for a section during the first phase.
5283 Since we don't do .gots or .plts, we just need to consider the
5284 virtual table relocs for gc. */
5286 static bool
5287 sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
5288 const Elf_Internal_Rela *relocs)
5290 Elf_Internal_Shdr *symtab_hdr;
5291 struct elf_link_hash_entry **sym_hashes;
5292 struct elf_sh_link_hash_table *htab;
5293 const Elf_Internal_Rela *rel;
5294 const Elf_Internal_Rela *rel_end;
5295 asection *sreloc;
5296 unsigned int r_type;
5297 enum got_type got_type, old_got_type;
5299 sreloc = NULL;
5301 if (bfd_link_relocatable (info))
5302 return true;
5304 BFD_ASSERT (is_sh_elf (abfd));
5306 symtab_hdr = &elf_symtab_hdr (abfd);
5307 sym_hashes = elf_sym_hashes (abfd);
5309 htab = sh_elf_hash_table (info);
5310 if (htab == NULL)
5311 return false;
5313 rel_end = relocs + sec->reloc_count;
5314 for (rel = relocs; rel < rel_end; rel++)
5316 struct elf_link_hash_entry *h;
5317 unsigned long r_symndx;
5319 r_symndx = ELF32_R_SYM (rel->r_info);
5320 r_type = ELF32_R_TYPE (rel->r_info);
5322 if (r_symndx < symtab_hdr->sh_info)
5323 h = NULL;
5324 else
5326 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5327 while (h->root.type == bfd_link_hash_indirect
5328 || h->root.type == bfd_link_hash_warning)
5329 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5332 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
5333 if (! bfd_link_pic (info)
5334 && r_type == R_SH_TLS_IE_32
5335 && h != NULL
5336 && h->root.type != bfd_link_hash_undefined
5337 && h->root.type != bfd_link_hash_undefweak
5338 && (h->dynindx == -1
5339 || h->def_regular))
5340 r_type = R_SH_TLS_LE_32;
5342 if (htab->fdpic_p)
5343 switch (r_type)
5345 case R_SH_GOTOFFFUNCDESC:
5346 case R_SH_GOTOFFFUNCDESC20:
5347 case R_SH_FUNCDESC:
5348 case R_SH_GOTFUNCDESC:
5349 case R_SH_GOTFUNCDESC20:
5350 if (h != NULL)
5352 if (h->dynindx == -1)
5353 switch (ELF_ST_VISIBILITY (h->other))
5355 case STV_INTERNAL:
5356 case STV_HIDDEN:
5357 break;
5358 default:
5359 bfd_elf_link_record_dynamic_symbol (info, h);
5360 break;
5363 break;
5366 /* Some relocs require a global offset table. */
5367 if (htab->root.sgot == NULL)
5369 switch (r_type)
5371 case R_SH_DIR32:
5372 /* This may require an rofixup. */
5373 if (!htab->fdpic_p)
5374 break;
5375 /* Fall through. */
5376 case R_SH_GOTPLT32:
5377 case R_SH_GOT32:
5378 case R_SH_GOT20:
5379 case R_SH_GOTOFF:
5380 case R_SH_GOTOFF20:
5381 case R_SH_FUNCDESC:
5382 case R_SH_GOTFUNCDESC:
5383 case R_SH_GOTFUNCDESC20:
5384 case R_SH_GOTOFFFUNCDESC:
5385 case R_SH_GOTOFFFUNCDESC20:
5386 case R_SH_GOTPC:
5387 case R_SH_TLS_GD_32:
5388 case R_SH_TLS_LD_32:
5389 case R_SH_TLS_IE_32:
5390 if (htab->root.dynobj == NULL)
5391 htab->root.dynobj = abfd;
5392 if (!create_got_section (htab->root.dynobj, info))
5393 return false;
5394 break;
5396 default:
5397 break;
5401 switch (r_type)
5403 /* This relocation describes the C++ object vtable hierarchy.
5404 Reconstruct it for later use during GC. */
5405 case R_SH_GNU_VTINHERIT:
5406 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5407 return false;
5408 break;
5410 /* This relocation describes which C++ vtable entries are actually
5411 used. Record for later use during GC. */
5412 case R_SH_GNU_VTENTRY:
5413 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5414 return false;
5415 break;
5417 case R_SH_TLS_IE_32:
5418 if (bfd_link_pic (info))
5419 info->flags |= DF_STATIC_TLS;
5421 /* FALLTHROUGH */
5422 force_got:
5423 case R_SH_TLS_GD_32:
5424 case R_SH_GOT32:
5425 case R_SH_GOT20:
5426 case R_SH_GOTFUNCDESC:
5427 case R_SH_GOTFUNCDESC20:
5428 switch (r_type)
5430 default:
5431 got_type = GOT_NORMAL;
5432 break;
5433 case R_SH_TLS_GD_32:
5434 got_type = GOT_TLS_GD;
5435 break;
5436 case R_SH_TLS_IE_32:
5437 got_type = GOT_TLS_IE;
5438 break;
5439 case R_SH_GOTFUNCDESC:
5440 case R_SH_GOTFUNCDESC20:
5441 got_type = GOT_FUNCDESC;
5442 break;
5445 if (h != NULL)
5447 h->got.refcount += 1;
5448 old_got_type = sh_elf_hash_entry (h)->got_type;
5450 else
5452 bfd_signed_vma *local_got_refcounts;
5454 /* This is a global offset table entry for a local
5455 symbol. */
5456 local_got_refcounts = elf_local_got_refcounts (abfd);
5457 if (local_got_refcounts == NULL)
5459 bfd_size_type size;
5461 size = symtab_hdr->sh_info;
5462 size *= sizeof (bfd_signed_vma);
5463 size += symtab_hdr->sh_info;
5464 local_got_refcounts = ((bfd_signed_vma *)
5465 bfd_zalloc (abfd, size));
5466 if (local_got_refcounts == NULL)
5467 return false;
5468 elf_local_got_refcounts (abfd) = local_got_refcounts;
5469 sh_elf_local_got_type (abfd)
5470 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5472 local_got_refcounts[r_symndx] += 1;
5473 old_got_type = sh_elf_local_got_type (abfd) [r_symndx];
5476 /* If a TLS symbol is accessed using IE at least once,
5477 there is no point to use dynamic model for it. */
5478 if (old_got_type != got_type && old_got_type != GOT_UNKNOWN
5479 && (old_got_type != GOT_TLS_GD || got_type != GOT_TLS_IE))
5481 if (old_got_type == GOT_TLS_IE && got_type == GOT_TLS_GD)
5482 got_type = GOT_TLS_IE;
5483 else
5485 if ((old_got_type == GOT_FUNCDESC || got_type == GOT_FUNCDESC)
5486 && (old_got_type == GOT_NORMAL || got_type == GOT_NORMAL))
5487 _bfd_error_handler
5488 /* xgettext:c-format */
5489 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5490 abfd, h->root.root.string);
5491 else if (old_got_type == GOT_FUNCDESC
5492 || got_type == GOT_FUNCDESC)
5493 _bfd_error_handler
5494 /* xgettext:c-format */
5495 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5496 abfd, h->root.root.string);
5497 else
5498 _bfd_error_handler
5499 /* xgettext:c-format */
5500 (_("%pB: `%s' accessed both as normal and thread local symbol"),
5501 abfd, h->root.root.string);
5502 return false;
5506 if (old_got_type != got_type)
5508 if (h != NULL)
5509 sh_elf_hash_entry (h)->got_type = got_type;
5510 else
5511 sh_elf_local_got_type (abfd) [r_symndx] = got_type;
5514 break;
5516 case R_SH_TLS_LD_32:
5517 sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5518 break;
5520 case R_SH_FUNCDESC:
5521 case R_SH_GOTOFFFUNCDESC:
5522 case R_SH_GOTOFFFUNCDESC20:
5523 if (rel->r_addend)
5525 _bfd_error_handler
5526 (_("%pB: Function descriptor relocation with non-zero addend"),
5527 abfd);
5528 return false;
5531 if (h == NULL)
5533 union gotref *local_funcdesc;
5535 /* We need a function descriptor for a local symbol. */
5536 local_funcdesc = sh_elf_local_funcdesc (abfd);
5537 if (local_funcdesc == NULL)
5539 bfd_size_type size;
5541 size = symtab_hdr->sh_info * sizeof (union gotref);
5542 local_funcdesc = (union gotref *) bfd_zalloc (abfd, size);
5543 if (local_funcdesc == NULL)
5544 return false;
5545 sh_elf_local_funcdesc (abfd) = local_funcdesc;
5547 local_funcdesc[r_symndx].refcount += 1;
5549 if (r_type == R_SH_FUNCDESC)
5551 if (!bfd_link_pic (info))
5552 htab->srofixup->size += 4;
5553 else
5554 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
5557 else
5559 sh_elf_hash_entry (h)->funcdesc.refcount++;
5560 if (r_type == R_SH_FUNCDESC)
5561 sh_elf_hash_entry (h)->abs_funcdesc_refcount++;
5563 /* If there is a function descriptor reference, then
5564 there should not be any non-FDPIC references. */
5565 old_got_type = sh_elf_hash_entry (h)->got_type;
5566 if (old_got_type != GOT_FUNCDESC && old_got_type != GOT_UNKNOWN)
5568 if (old_got_type == GOT_NORMAL)
5569 _bfd_error_handler
5570 /* xgettext:c-format */
5571 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5572 abfd, h->root.root.string);
5573 else
5574 _bfd_error_handler
5575 /* xgettext:c-format */
5576 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5577 abfd, h->root.root.string);
5580 break;
5582 case R_SH_GOTPLT32:
5583 /* If this is a local symbol, we resolve it directly without
5584 creating a procedure linkage table entry. */
5586 if (h == NULL
5587 || h->forced_local
5588 || ! bfd_link_pic (info)
5589 || info->symbolic
5590 || h->dynindx == -1)
5591 goto force_got;
5593 h->needs_plt = 1;
5594 h->plt.refcount += 1;
5595 ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5597 break;
5599 case R_SH_PLT32:
5600 /* This symbol requires a procedure linkage table entry. We
5601 actually build the entry in adjust_dynamic_symbol,
5602 because this might be a case of linking PIC code which is
5603 never referenced by a dynamic object, in which case we
5604 don't need to generate a procedure linkage table entry
5605 after all. */
5607 /* If this is a local symbol, we resolve it directly without
5608 creating a procedure linkage table entry. */
5609 if (h == NULL)
5610 continue;
5612 if (h->forced_local)
5613 break;
5615 h->needs_plt = 1;
5616 h->plt.refcount += 1;
5617 break;
5619 case R_SH_DIR32:
5620 case R_SH_REL32:
5621 if (h != NULL && ! bfd_link_pic (info))
5623 h->non_got_ref = 1;
5624 h->plt.refcount += 1;
5627 /* If we are creating a shared library, and this is a reloc
5628 against a global symbol, or a non PC relative reloc
5629 against a local symbol, then we need to copy the reloc
5630 into the shared library. However, if we are linking with
5631 -Bsymbolic, we do not need to copy a reloc against a
5632 global symbol which is defined in an object we are
5633 including in the link (i.e., DEF_REGULAR is set). At
5634 this point we have not seen all the input files, so it is
5635 possible that DEF_REGULAR is not set now but will be set
5636 later (it is never cleared). We account for that
5637 possibility below by storing information in the
5638 dyn_relocs field of the hash table entry. A similar
5639 situation occurs when creating shared libraries and symbol
5640 visibility changes render the symbol local.
5642 If on the other hand, we are creating an executable, we
5643 may need to keep relocations for symbols satisfied by a
5644 dynamic library if we manage to avoid copy relocs for the
5645 symbol. */
5646 if ((bfd_link_pic (info)
5647 && (sec->flags & SEC_ALLOC) != 0
5648 && (r_type != R_SH_REL32
5649 || (h != NULL
5650 && (! info->symbolic
5651 || h->root.type == bfd_link_hash_defweak
5652 || !h->def_regular))))
5653 || (! bfd_link_pic (info)
5654 && (sec->flags & SEC_ALLOC) != 0
5655 && h != NULL
5656 && (h->root.type == bfd_link_hash_defweak
5657 || !h->def_regular)))
5659 struct elf_dyn_relocs *p;
5660 struct elf_dyn_relocs **head;
5662 if (htab->root.dynobj == NULL)
5663 htab->root.dynobj = abfd;
5665 /* When creating a shared object, we must copy these
5666 reloc types into the output file. We create a reloc
5667 section in dynobj and make room for this reloc. */
5668 if (sreloc == NULL)
5670 sreloc = _bfd_elf_make_dynamic_reloc_section
5671 (sec, htab->root.dynobj, 2, abfd, /*rela?*/ true);
5673 if (sreloc == NULL)
5674 return false;
5677 /* If this is a global symbol, we count the number of
5678 relocations we need for this symbol. */
5679 if (h != NULL)
5680 head = &h->dyn_relocs;
5681 else
5683 /* Track dynamic relocs needed for local syms too. */
5684 asection *s;
5685 void *vpp;
5686 Elf_Internal_Sym *isym;
5688 isym = bfd_sym_from_r_symndx (&htab->root.sym_cache,
5689 abfd, r_symndx);
5690 if (isym == NULL)
5691 return false;
5693 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5694 if (s == NULL)
5695 s = sec;
5697 vpp = &elf_section_data (s)->local_dynrel;
5698 head = (struct elf_dyn_relocs **) vpp;
5701 p = *head;
5702 if (p == NULL || p->sec != sec)
5704 size_t amt = sizeof (*p);
5705 p = bfd_alloc (htab->root.dynobj, amt);
5706 if (p == NULL)
5707 return false;
5708 p->next = *head;
5709 *head = p;
5710 p->sec = sec;
5711 p->count = 0;
5712 p->pc_count = 0;
5715 p->count += 1;
5716 if (r_type == R_SH_REL32)
5717 p->pc_count += 1;
5720 /* Allocate the fixup regardless of whether we need a relocation.
5721 If we end up generating the relocation, we'll unallocate the
5722 fixup. */
5723 if (htab->fdpic_p && !bfd_link_pic (info)
5724 && r_type == R_SH_DIR32
5725 && (sec->flags & SEC_ALLOC) != 0)
5726 htab->srofixup->size += 4;
5727 break;
5729 case R_SH_TLS_LE_32:
5730 if (bfd_link_dll (info))
5732 _bfd_error_handler
5733 (_("%pB: TLS local exec code cannot be linked into shared objects"),
5734 abfd);
5735 return false;
5738 break;
5740 case R_SH_TLS_LDO_32:
5741 /* Nothing to do. */
5742 break;
5744 default:
5745 break;
5749 return true;
5752 #ifndef sh_elf_set_mach_from_flags
5753 static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5755 static bool
5756 sh_elf_set_mach_from_flags (bfd *abfd)
5758 flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5760 if (flags >= ARRAY_SIZE (sh_ef_bfd_table))
5761 return false;
5763 if (sh_ef_bfd_table[flags] == 0)
5764 return false;
5766 bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5768 return true;
5772 /* Reverse table lookup for sh_ef_bfd_table[].
5773 Given a bfd MACH value from archures.c
5774 return the equivalent ELF flags from the table.
5775 Return -1 if no match is found. */
5778 sh_elf_get_flags_from_mach (unsigned long mach)
5780 int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5782 for (; i>0; i--)
5783 if (sh_ef_bfd_table[i] == mach)
5784 return i;
5786 /* shouldn't get here */
5787 BFD_FAIL();
5789 return -1;
5791 #endif /* not sh_elf_set_mach_from_flags */
5793 #ifndef sh_elf_copy_private_data
5794 /* Copy backend specific data from one object module to another */
5796 static bool
5797 sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5799 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5800 return true;
5802 if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd))
5803 return false;
5805 return sh_elf_set_mach_from_flags (obfd);
5807 #endif /* not sh_elf_copy_private_data */
5809 #ifndef sh_elf_merge_private_data
5811 /* This function returns the ELF architecture number that
5812 corresponds to the given arch_sh* flags. */
5815 sh_find_elf_flags (unsigned int arch_set)
5817 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5818 unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5820 return sh_elf_get_flags_from_mach (bfd_mach);
5823 /* Merge the architecture type of two BFD files, such that the
5824 resultant architecture supports all the features required
5825 by the two input BFDs.
5826 If the input BFDs are multually incompatible - i.e. one uses
5827 DSP while the other uses FPU - or there is no known architecture
5828 that fits the requirements then an error is emitted. */
5830 static bool
5831 sh_merge_bfd_arch (bfd *ibfd, struct bfd_link_info *info)
5833 bfd *obfd = info->output_bfd;
5834 unsigned int old_arch, new_arch, merged_arch;
5836 if (! _bfd_generic_verify_endian_match (ibfd, info))
5837 return false;
5839 old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
5840 new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));
5842 merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);
5844 if (!SH_VALID_CO_ARCH_SET (merged_arch))
5846 _bfd_error_handler
5847 /* xgettext:c-format */
5848 (_("%pB: uses %s instructions while previous modules "
5849 "use %s instructions"),
5850 ibfd,
5851 SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
5852 SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
5853 bfd_set_error (bfd_error_bad_value);
5854 return false;
5856 else if (!SH_VALID_ARCH_SET (merged_arch))
5858 _bfd_error_handler
5859 /* xgettext:c-format */
5860 (_("internal error: merge of architecture '%s' with "
5861 "architecture '%s' produced unknown architecture"),
5862 bfd_printable_name (obfd),
5863 bfd_printable_name (ibfd));
5864 bfd_set_error (bfd_error_bad_value);
5865 return false;
5868 bfd_default_set_arch_mach (obfd, bfd_arch_sh,
5869 sh_get_bfd_mach_from_arch_set (merged_arch));
5871 return true;
5874 /* This routine initialises the elf flags when required and
5875 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5877 static bool
5878 sh_elf_merge_private_data (bfd *ibfd, struct bfd_link_info *info)
5880 bfd *obfd = info->output_bfd;
5882 /* FIXME: What should be checked when linking shared libraries? */
5883 if ((ibfd->flags & DYNAMIC) != 0)
5884 return true;
5886 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5887 return true;
5889 if (! elf_flags_init (obfd))
5891 /* This happens when ld starts out with a 'blank' output file. */
5892 elf_flags_init (obfd) = true;
5893 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
5894 sh_elf_set_mach_from_flags (obfd);
5895 if (elf_elfheader (obfd)->e_flags & EF_SH_FDPIC)
5896 elf_elfheader (obfd)->e_flags &= ~EF_SH_PIC;
5899 if (! sh_merge_bfd_arch (ibfd, info))
5901 _bfd_error_handler (_("%pB: uses instructions which are incompatible "
5902 "with instructions used in previous modules"),
5903 ibfd);
5904 bfd_set_error (bfd_error_bad_value);
5905 return false;
5908 elf_elfheader (obfd)->e_flags &= ~EF_SH_MACH_MASK;
5909 elf_elfheader (obfd)->e_flags |=
5910 sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
5912 if (fdpic_object_p (ibfd) != fdpic_object_p (obfd))
5914 _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"),
5915 ibfd);
5916 bfd_set_error (bfd_error_bad_value);
5917 return false;
5920 return true;
5922 #endif /* not sh_elf_merge_private_data */
5924 /* Override the generic function because we need to store sh_elf_obj_tdata
5925 as the specific tdata. We set also the machine architecture from flags
5926 here. */
5928 static bool
5929 sh_elf_object_p (bfd *abfd)
5931 if (! sh_elf_set_mach_from_flags (abfd))
5932 return false;
5934 return (((elf_elfheader (abfd)->e_flags & EF_SH_FDPIC) != 0)
5935 == fdpic_object_p (abfd));
5938 /* Finish up dynamic symbol handling. We set the contents of various
5939 dynamic sections here. */
5941 static bool
5942 sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5943 struct elf_link_hash_entry *h,
5944 Elf_Internal_Sym *sym)
5946 struct elf_sh_link_hash_table *htab;
5948 htab = sh_elf_hash_table (info);
5950 if (h->plt.offset != (bfd_vma) -1)
5952 asection *splt;
5953 asection *sgotplt;
5954 asection *srelplt;
5956 bfd_vma plt_index;
5957 bfd_vma got_offset;
5958 Elf_Internal_Rela rel;
5959 bfd_byte *loc;
5960 const struct elf_sh_plt_info *plt_info;
5962 /* This symbol has an entry in the procedure linkage table. Set
5963 it up. */
5965 BFD_ASSERT (h->dynindx != -1);
5967 splt = htab->root.splt;
5968 sgotplt = htab->root.sgotplt;
5969 srelplt = htab->root.srelplt;
5970 BFD_ASSERT (splt != NULL && sgotplt != NULL && srelplt != NULL);
5972 /* Get the index in the procedure linkage table which
5973 corresponds to this symbol. This is the index of this symbol
5974 in all the symbols for which we are making plt entries. The
5975 first entry in the procedure linkage table is reserved. */
5976 plt_index = get_plt_index (htab->plt_info, h->plt.offset);
5978 plt_info = htab->plt_info;
5979 if (plt_info->short_plt != NULL && plt_index <= MAX_SHORT_PLT)
5980 plt_info = plt_info->short_plt;
5982 /* Get the offset into the .got table of the entry that
5983 corresponds to this function. */
5984 if (htab->fdpic_p)
5985 /* The offset must be relative to the GOT symbol, twelve bytes
5986 before the end of .got.plt. Each descriptor is eight
5987 bytes. */
5988 got_offset = plt_index * 8 + 12 - sgotplt->size;
5989 else
5990 /* Each .got entry is 4 bytes. The first three are
5991 reserved. */
5992 got_offset = (plt_index + 3) * 4;
5994 #ifdef GOT_BIAS
5995 if (bfd_link_pic (info))
5996 got_offset -= GOT_BIAS;
5997 #endif
5999 /* Fill in the entry in the procedure linkage table. */
6000 memcpy (splt->contents + h->plt.offset,
6001 plt_info->symbol_entry,
6002 plt_info->symbol_entry_size);
6004 if (bfd_link_pic (info) || htab->fdpic_p)
6006 if (plt_info->symbol_fields.got20)
6008 bfd_reloc_status_type r;
6009 r = install_movi20_field (output_bfd, got_offset,
6010 splt->owner, splt, splt->contents,
6011 h->plt.offset
6012 + plt_info->symbol_fields.got_entry);
6013 BFD_ASSERT (r == bfd_reloc_ok);
6015 else
6016 install_plt_field (output_bfd, false, got_offset,
6017 (splt->contents
6018 + h->plt.offset
6019 + plt_info->symbol_fields.got_entry));
6021 else
6023 BFD_ASSERT (!plt_info->symbol_fields.got20);
6025 install_plt_field (output_bfd, false,
6026 (sgotplt->output_section->vma
6027 + sgotplt->output_offset
6028 + got_offset),
6029 (splt->contents
6030 + h->plt.offset
6031 + plt_info->symbol_fields.got_entry));
6032 if (htab->root.target_os == is_vxworks)
6034 unsigned int reachable_plts, plts_per_4k;
6035 int distance;
6037 /* Divide the PLT into groups. The first group contains
6038 REACHABLE_PLTS entries and the other groups contain
6039 PLTS_PER_4K entries. Entries in the first group can
6040 branch directly to .plt; those in later groups branch
6041 to the last element of the previous group. */
6042 /* ??? It would be better to create multiple copies of
6043 the common resolver stub. */
6044 reachable_plts = ((4096
6045 - plt_info->plt0_entry_size
6046 - (plt_info->symbol_fields.plt + 4))
6047 / plt_info->symbol_entry_size) + 1;
6048 plts_per_4k = (4096 / plt_info->symbol_entry_size);
6049 if (plt_index < reachable_plts)
6050 distance = -(h->plt.offset
6051 + plt_info->symbol_fields.plt);
6052 else
6053 distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
6054 * plt_info->symbol_entry_size);
6056 /* Install the 'bra' with this offset. */
6057 bfd_put_16 (output_bfd,
6058 0xa000 | (0x0fff & ((distance - 4) / 2)),
6059 (splt->contents
6060 + h->plt.offset
6061 + plt_info->symbol_fields.plt));
6063 else
6064 install_plt_field (output_bfd, true,
6065 splt->output_section->vma + splt->output_offset,
6066 (splt->contents
6067 + h->plt.offset
6068 + plt_info->symbol_fields.plt));
6071 /* Make got_offset relative to the start of .got.plt. */
6072 #ifdef GOT_BIAS
6073 if (bfd_link_pic (info))
6074 got_offset += GOT_BIAS;
6075 #endif
6076 if (htab->fdpic_p)
6077 got_offset = plt_index * 8;
6079 if (plt_info->symbol_fields.reloc_offset != MINUS_ONE)
6080 install_plt_field (output_bfd, false,
6081 plt_index * sizeof (Elf32_External_Rela),
6082 (splt->contents
6083 + h->plt.offset
6084 + plt_info->symbol_fields.reloc_offset));
6086 /* Fill in the entry in the global offset table. */
6087 bfd_put_32 (output_bfd,
6088 (splt->output_section->vma
6089 + splt->output_offset
6090 + h->plt.offset
6091 + plt_info->symbol_resolve_offset),
6092 sgotplt->contents + got_offset);
6093 if (htab->fdpic_p)
6094 bfd_put_32 (output_bfd,
6095 sh_elf_osec_to_segment (output_bfd, splt->output_section),
6096 sgotplt->contents + got_offset + 4);
6098 /* Fill in the entry in the .rela.plt section. */
6099 rel.r_offset = (sgotplt->output_section->vma
6100 + sgotplt->output_offset
6101 + got_offset);
6102 if (htab->fdpic_p)
6103 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_FUNCDESC_VALUE);
6104 else
6105 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
6106 rel.r_addend = 0;
6107 #ifdef GOT_BIAS
6108 rel.r_addend = GOT_BIAS;
6109 #endif
6110 loc = srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
6111 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6113 if (htab->root.target_os == is_vxworks && !bfd_link_pic (info))
6115 /* Create the .rela.plt.unloaded relocations for this PLT entry.
6116 Begin by pointing LOC to the first such relocation. */
6117 loc = (htab->srelplt2->contents
6118 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
6120 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
6121 for the PLT entry's pointer to the .got.plt entry. */
6122 rel.r_offset = (splt->output_section->vma
6123 + splt->output_offset
6124 + h->plt.offset
6125 + plt_info->symbol_fields.got_entry);
6126 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6127 rel.r_addend = got_offset;
6128 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6129 loc += sizeof (Elf32_External_Rela);
6131 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
6132 the .got.plt entry, which initially points to .plt. */
6133 rel.r_offset = (sgotplt->output_section->vma
6134 + sgotplt->output_offset
6135 + got_offset);
6136 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
6137 rel.r_addend = 0;
6138 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6141 if (!h->def_regular)
6143 /* Mark the symbol as undefined, rather than as defined in
6144 the .plt section. Leave the value alone. */
6145 sym->st_shndx = SHN_UNDEF;
6149 if (h->got.offset != (bfd_vma) -1
6150 && sh_elf_hash_entry (h)->got_type != GOT_TLS_GD
6151 && sh_elf_hash_entry (h)->got_type != GOT_TLS_IE
6152 && sh_elf_hash_entry (h)->got_type != GOT_FUNCDESC)
6154 asection *sgot;
6155 asection *srelgot;
6156 Elf_Internal_Rela rel;
6157 bfd_byte *loc;
6159 /* This symbol has an entry in the global offset table. Set it
6160 up. */
6162 sgot = htab->root.sgot;
6163 srelgot = htab->root.srelgot;
6164 BFD_ASSERT (sgot != NULL && srelgot != NULL);
6166 rel.r_offset = (sgot->output_section->vma
6167 + sgot->output_offset
6168 + (h->got.offset &~ (bfd_vma) 1));
6170 /* If this is a static link, or it is a -Bsymbolic link and the
6171 symbol is defined locally or was forced to be local because
6172 of a version file, we just want to emit a RELATIVE reloc.
6173 The entry in the global offset table will already have been
6174 initialized in the relocate_section function. */
6175 if (bfd_link_pic (info)
6176 && (h->root.type == bfd_link_hash_defined
6177 || h->root.type == bfd_link_hash_defweak)
6178 && SYMBOL_REFERENCES_LOCAL (info, h))
6180 if (htab->fdpic_p)
6182 asection *sec = h->root.u.def.section;
6183 int dynindx
6184 = elf_section_data (sec->output_section)->dynindx;
6186 rel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
6187 rel.r_addend = (h->root.u.def.value
6188 + h->root.u.def.section->output_offset);
6190 else
6192 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
6193 rel.r_addend = (h->root.u.def.value
6194 + h->root.u.def.section->output_section->vma
6195 + h->root.u.def.section->output_offset);
6198 else
6200 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
6201 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
6202 rel.r_addend = 0;
6205 loc = srelgot->contents;
6206 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
6207 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6210 if (h->needs_copy)
6212 asection *s;
6213 Elf_Internal_Rela rel;
6214 bfd_byte *loc;
6216 /* This symbol needs a copy reloc. Set it up. */
6218 BFD_ASSERT (h->dynindx != -1
6219 && (h->root.type == bfd_link_hash_defined
6220 || h->root.type == bfd_link_hash_defweak));
6222 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
6223 BFD_ASSERT (s != NULL);
6225 rel.r_offset = (h->root.u.def.value
6226 + h->root.u.def.section->output_section->vma
6227 + h->root.u.def.section->output_offset);
6228 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
6229 rel.r_addend = 0;
6230 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6231 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6234 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
6235 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
6236 ".got" section. */
6237 if (h == htab->root.hdynamic
6238 || (htab->root.target_os != is_vxworks && h == htab->root.hgot))
6239 sym->st_shndx = SHN_ABS;
6241 return true;
6244 /* Finish up the dynamic sections. */
6246 static bool
6247 sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
6249 struct elf_sh_link_hash_table *htab;
6250 asection *sgotplt;
6251 asection *sdyn;
6253 htab = sh_elf_hash_table (info);
6254 if (htab == NULL)
6255 return false;
6257 sgotplt = htab->root.sgotplt;
6258 sdyn = bfd_get_linker_section (htab->root.dynobj, ".dynamic");
6260 if (htab->root.dynamic_sections_created)
6262 asection *splt;
6263 Elf32_External_Dyn *dyncon, *dynconend;
6265 BFD_ASSERT (sgotplt != NULL && sdyn != NULL);
6267 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6268 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6269 for (; dyncon < dynconend; dyncon++)
6271 Elf_Internal_Dyn dyn;
6272 asection *s;
6274 bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
6276 switch (dyn.d_tag)
6278 default:
6279 if (htab->root.target_os == is_vxworks
6280 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
6281 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6282 break;
6284 case DT_PLTGOT:
6285 BFD_ASSERT (htab->root.hgot != NULL);
6286 s = htab->root.hgot->root.u.def.section;
6287 dyn.d_un.d_ptr = htab->root.hgot->root.u.def.value
6288 + s->output_section->vma + s->output_offset;
6289 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6290 break;
6292 case DT_JMPREL:
6293 s = htab->root.srelplt;
6294 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6295 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6296 break;
6298 case DT_PLTRELSZ:
6299 s = htab->root.srelplt;
6300 dyn.d_un.d_val = s->size;
6301 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6302 break;
6306 /* Fill in the first entry in the procedure linkage table. */
6307 splt = htab->root.splt;
6308 if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
6310 unsigned int i;
6312 memcpy (splt->contents,
6313 htab->plt_info->plt0_entry,
6314 htab->plt_info->plt0_entry_size);
6315 for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
6316 if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
6317 install_plt_field (output_bfd, false,
6318 (sgotplt->output_section->vma
6319 + sgotplt->output_offset
6320 + (i * 4)),
6321 (splt->contents
6322 + htab->plt_info->plt0_got_fields[i]));
6324 if (htab->root.target_os == is_vxworks)
6326 /* Finalize the .rela.plt.unloaded contents. */
6327 Elf_Internal_Rela rel;
6328 bfd_byte *loc;
6330 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
6331 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
6332 loc = htab->srelplt2->contents;
6333 rel.r_offset = (splt->output_section->vma
6334 + splt->output_offset
6335 + htab->plt_info->plt0_got_fields[2]);
6336 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6337 rel.r_addend = 8;
6338 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6339 loc += sizeof (Elf32_External_Rela);
6341 /* Fix up the remaining .rela.plt.unloaded relocations.
6342 They may have the wrong symbol index for _G_O_T_ or
6343 _P_L_T_ depending on the order in which symbols were
6344 output. */
6345 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
6347 /* The PLT entry's pointer to the .got.plt slot. */
6348 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6349 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
6350 R_SH_DIR32);
6351 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6352 loc += sizeof (Elf32_External_Rela);
6354 /* The .got.plt slot's pointer to .plt. */
6355 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6356 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
6357 R_SH_DIR32);
6358 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6359 loc += sizeof (Elf32_External_Rela);
6363 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6364 really seem like the right value. */
6365 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
6369 /* Fill in the first three entries in the global offset table. */
6370 if (sgotplt && sgotplt->size > 0 && !htab->fdpic_p)
6372 if (sdyn == NULL)
6373 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents);
6374 else
6375 bfd_put_32 (output_bfd,
6376 sdyn->output_section->vma + sdyn->output_offset,
6377 sgotplt->contents);
6378 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4);
6379 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8);
6382 if (sgotplt && sgotplt->size > 0)
6383 elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4;
6385 /* At the very end of the .rofixup section is a pointer to the GOT. */
6386 if (htab->fdpic_p && htab->srofixup != NULL)
6388 struct elf_link_hash_entry *hgot = htab->root.hgot;
6389 bfd_vma got_value = hgot->root.u.def.value
6390 + hgot->root.u.def.section->output_section->vma
6391 + hgot->root.u.def.section->output_offset;
6393 sh_elf_add_rofixup (output_bfd, htab->srofixup, got_value);
6395 /* Make sure we allocated and generated the same number of fixups. */
6396 BFD_ASSERT (htab->srofixup->reloc_count * 4 == htab->srofixup->size);
6399 if (htab->srelfuncdesc)
6400 BFD_ASSERT (htab->srelfuncdesc->reloc_count * sizeof (Elf32_External_Rela)
6401 == htab->srelfuncdesc->size);
6403 if (htab->root.srelgot)
6404 BFD_ASSERT (htab->root.srelgot->reloc_count * sizeof (Elf32_External_Rela)
6405 == htab->root.srelgot->size);
6407 return true;
6410 static enum elf_reloc_type_class
6411 sh_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
6412 const asection *rel_sec ATTRIBUTE_UNUSED,
6413 const Elf_Internal_Rela *rela)
6415 switch ((int) ELF32_R_TYPE (rela->r_info))
6417 case R_SH_RELATIVE:
6418 return reloc_class_relative;
6419 case R_SH_JMP_SLOT:
6420 return reloc_class_plt;
6421 case R_SH_COPY:
6422 return reloc_class_copy;
6423 default:
6424 return reloc_class_normal;
6428 #if !defined SH_TARGET_ALREADY_DEFINED
6429 /* Support for Linux core dump NOTE sections. */
6431 static bool
6432 elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
6434 int offset;
6435 unsigned int size;
6437 switch (note->descsz)
6439 default:
6440 return false;
6442 case 168: /* Linux/SH */
6443 /* pr_cursig */
6444 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
6446 /* pr_pid */
6447 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
6449 /* pr_reg */
6450 offset = 72;
6451 size = 92;
6453 break;
6456 /* Make a ".reg/999" section. */
6457 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
6458 size, note->descpos + offset);
6461 static bool
6462 elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
6464 switch (note->descsz)
6466 default:
6467 return false;
6469 case 124: /* Linux/SH elf_prpsinfo */
6470 elf_tdata (abfd)->core->program
6471 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
6472 elf_tdata (abfd)->core->command
6473 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
6476 /* Note that for some reason, a spurious space is tacked
6477 onto the end of the args in some (at least one anyway)
6478 implementations, so strip it off if it exists. */
6481 char *command = elf_tdata (abfd)->core->command;
6482 int n = strlen (command);
6484 if (0 < n && command[n - 1] == ' ')
6485 command[n - 1] = '\0';
6488 return true;
6490 #endif /* not SH_TARGET_ALREADY_DEFINED */
6493 /* Return address for Ith PLT stub in section PLT, for relocation REL
6494 or (bfd_vma) -1 if it should not be included. */
6496 static bfd_vma
6497 sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6498 const arelent *rel ATTRIBUTE_UNUSED)
6500 const struct elf_sh_plt_info *plt_info;
6502 plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6503 return plt->vma + get_plt_offset (plt_info, i);
6506 /* Decide whether to attempt to turn absptr or lsda encodings in
6507 shared libraries into pcrel within the given input section. */
6509 static bool
6510 sh_elf_use_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED,
6511 struct bfd_link_info *info,
6512 asection *eh_frame_section ATTRIBUTE_UNUSED)
6514 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6516 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
6517 if (htab->fdpic_p)
6518 return false;
6520 return true;
6523 /* Adjust the contents of an eh_frame_hdr section before they're output. */
6525 static bfd_byte
6526 sh_elf_encode_eh_address (bfd *abfd,
6527 struct bfd_link_info *info,
6528 asection *osec, bfd_vma offset,
6529 asection *loc_sec, bfd_vma loc_offset,
6530 bfd_vma *encoded)
6532 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6533 struct elf_link_hash_entry *h;
6535 if (!htab->fdpic_p)
6536 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, loc_sec,
6537 loc_offset, encoded);
6539 h = htab->root.hgot;
6540 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
6542 if (! h || (sh_elf_osec_to_segment (abfd, osec)
6543 == sh_elf_osec_to_segment (abfd, loc_sec->output_section)))
6544 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
6545 loc_sec, loc_offset, encoded);
6547 BFD_ASSERT (sh_elf_osec_to_segment (abfd, osec)
6548 == (sh_elf_osec_to_segment
6549 (abfd, h->root.u.def.section->output_section)));
6551 *encoded = osec->vma + offset
6552 - (h->root.u.def.value
6553 + h->root.u.def.section->output_section->vma
6554 + h->root.u.def.section->output_offset);
6556 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
6559 #if !defined SH_TARGET_ALREADY_DEFINED
6560 #define TARGET_BIG_SYM sh_elf32_vec
6561 #define TARGET_BIG_NAME "elf32-sh"
6562 #define TARGET_LITTLE_SYM sh_elf32_le_vec
6563 #define TARGET_LITTLE_NAME "elf32-shl"
6564 #endif
6566 #define ELF_ARCH bfd_arch_sh
6567 #define ELF_TARGET_ID SH_ELF_DATA
6568 #define ELF_MACHINE_CODE EM_SH
6569 #ifdef __QNXTARGET__
6570 #define ELF_MAXPAGESIZE 0x1000
6571 #else
6572 #define ELF_MAXPAGESIZE 0x80
6573 #endif
6575 #define elf_symbol_leading_char '_'
6577 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6578 #define bfd_elf32_bfd_reloc_name_lookup \
6579 sh_elf_reloc_name_lookup
6580 #define elf_info_to_howto sh_elf_info_to_howto
6581 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6582 #define elf_backend_relocate_section sh_elf_relocate_section
6583 #define bfd_elf32_bfd_get_relocated_section_contents \
6584 sh_elf_get_relocated_section_contents
6585 #define bfd_elf32_mkobject sh_elf_mkobject
6586 #define elf_backend_object_p sh_elf_object_p
6587 #define bfd_elf32_bfd_copy_private_bfd_data \
6588 sh_elf_copy_private_data
6589 #define bfd_elf32_bfd_merge_private_bfd_data \
6590 sh_elf_merge_private_data
6592 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6593 #define elf_backend_check_relocs sh_elf_check_relocs
6594 #define elf_backend_copy_indirect_symbol \
6595 sh_elf_copy_indirect_symbol
6596 #define elf_backend_create_dynamic_sections \
6597 sh_elf_create_dynamic_sections
6598 #define bfd_elf32_bfd_link_hash_table_create \
6599 sh_elf_link_hash_table_create
6600 #define elf_backend_adjust_dynamic_symbol \
6601 sh_elf_adjust_dynamic_symbol
6602 #define elf_backend_early_size_sections sh_elf_early_size_sections
6603 #define elf_backend_late_size_sections sh_elf_late_size_sections
6604 #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
6605 #define elf_backend_finish_dynamic_symbol \
6606 sh_elf_finish_dynamic_symbol
6607 #define elf_backend_finish_dynamic_sections \
6608 sh_elf_finish_dynamic_sections
6609 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6610 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6611 #define elf_backend_can_make_relative_eh_frame \
6612 sh_elf_use_relative_eh_frame
6613 #define elf_backend_can_make_lsda_relative_eh_frame \
6614 sh_elf_use_relative_eh_frame
6615 #define elf_backend_encode_eh_address \
6616 sh_elf_encode_eh_address
6618 #define elf_backend_stack_align 8
6619 #define elf_backend_can_gc_sections 1
6620 #define elf_backend_can_refcount 1
6621 #define elf_backend_want_got_plt 1
6622 #define elf_backend_plt_readonly 1
6623 #define elf_backend_want_plt_sym 0
6624 #define elf_backend_got_header_size 12
6625 #define elf_backend_dtrel_excludes_plt 1
6627 #define elf_backend_linux_prpsinfo32_ugid16 true
6629 #if !defined SH_TARGET_ALREADY_DEFINED
6631 #include "elf32-target.h"
6633 /* NetBSD support. */
6634 #undef TARGET_BIG_SYM
6635 #define TARGET_BIG_SYM sh_elf32_nbsd_vec
6636 #undef TARGET_BIG_NAME
6637 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6638 #undef TARGET_LITTLE_SYM
6639 #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
6640 #undef TARGET_LITTLE_NAME
6641 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6642 #undef ELF_MAXPAGESIZE
6643 #define ELF_MAXPAGESIZE 0x10000
6644 #undef ELF_COMMONPAGESIZE
6645 #undef elf_symbol_leading_char
6646 #define elf_symbol_leading_char 0
6647 #undef elf32_bed
6648 #define elf32_bed elf32_sh_nbsd_bed
6650 #include "elf32-target.h"
6653 /* Linux support. */
6654 #undef TARGET_BIG_SYM
6655 #define TARGET_BIG_SYM sh_elf32_linux_be_vec
6656 #undef TARGET_BIG_NAME
6657 #define TARGET_BIG_NAME "elf32-shbig-linux"
6658 #undef TARGET_LITTLE_SYM
6659 #define TARGET_LITTLE_SYM sh_elf32_linux_vec
6660 #undef TARGET_LITTLE_NAME
6661 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6662 #undef ELF_COMMONPAGESIZE
6663 #define ELF_COMMONPAGESIZE 0x1000
6665 #undef elf_backend_grok_prstatus
6666 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6667 #undef elf_backend_grok_psinfo
6668 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6669 #undef elf32_bed
6670 #define elf32_bed elf32_sh_lin_bed
6672 #include "elf32-target.h"
6675 /* FDPIC support. */
6676 #undef TARGET_BIG_SYM
6677 #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
6678 #undef TARGET_BIG_NAME
6679 #define TARGET_BIG_NAME "elf32-shbig-fdpic"
6680 #undef TARGET_LITTLE_SYM
6681 #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
6682 #undef TARGET_LITTLE_NAME
6683 #define TARGET_LITTLE_NAME "elf32-sh-fdpic"
6685 #undef elf32_bed
6686 #define elf32_bed elf32_sh_fd_bed
6688 #include "elf32-target.h"
6690 /* VxWorks support. */
6691 #undef TARGET_BIG_SYM
6692 #define TARGET_BIG_SYM sh_elf32_vxworks_vec
6693 #undef TARGET_BIG_NAME
6694 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6695 #undef TARGET_LITTLE_SYM
6696 #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
6697 #undef TARGET_LITTLE_NAME
6698 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6699 #undef elf32_bed
6700 #define elf32_bed elf32_sh_vxworks_bed
6702 #undef elf_backend_want_plt_sym
6703 #define elf_backend_want_plt_sym 1
6704 #undef elf_symbol_leading_char
6705 #define elf_symbol_leading_char '_'
6706 #define elf_backend_want_got_underscore 1
6707 #undef elf_backend_grok_prstatus
6708 #undef elf_backend_grok_psinfo
6709 #undef elf_backend_add_symbol_hook
6710 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6711 #undef elf_backend_link_output_symbol_hook
6712 #define elf_backend_link_output_symbol_hook \
6713 elf_vxworks_link_output_symbol_hook
6714 #undef elf_backend_emit_relocs
6715 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6716 #undef elf_backend_final_write_processing
6717 #define elf_backend_final_write_processing \
6718 elf_vxworks_final_write_processing
6719 #undef ELF_MAXPAGESIZE
6720 #define ELF_MAXPAGESIZE 0x1000
6721 #undef ELF_COMMONPAGESIZE
6723 #undef ELF_TARGET_OS
6724 #define ELF_TARGET_OS is_vxworks
6726 #include "elf32-target.h"
6728 #endif /* not SH_TARGET_ALREADY_DEFINED */