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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) 1996-2022 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_RELOC) == 0
472 || sec->reloc_count == 0)
473 return true;
475 symtab_hdr = &elf_symtab_hdr (abfd);
477 internal_relocs = (_bfd_elf_link_read_relocs
478 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
479 link_info->keep_memory));
480 if (internal_relocs == NULL)
481 goto error_return;
483 have_code = false;
485 irelend = internal_relocs + sec->reloc_count;
486 for (irel = internal_relocs; irel < irelend; irel++)
488 bfd_vma laddr, paddr, symval;
489 unsigned short insn;
490 Elf_Internal_Rela *irelfn, *irelscan, *irelcount;
491 bfd_signed_vma foff;
493 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE)
494 have_code = true;
496 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES)
497 continue;
499 /* Get the section contents. */
500 if (contents == NULL)
502 if (elf_section_data (sec)->this_hdr.contents != NULL)
503 contents = elf_section_data (sec)->this_hdr.contents;
504 else
506 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
507 goto error_return;
511 /* The r_addend field of the R_SH_USES reloc will point us to
512 the register load. The 4 is because the r_addend field is
513 computed as though it were a jump offset, which are based
514 from 4 bytes after the jump instruction. */
515 laddr = irel->r_offset + 4 + irel->r_addend;
516 if (laddr >= sec->size)
518 /* xgettext:c-format */
519 _bfd_error_handler
520 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES offset"),
521 abfd, (uint64_t) irel->r_offset);
522 continue;
524 insn = bfd_get_16 (abfd, contents + laddr);
526 /* If the instruction is not mov.l NN,rN, we don't know what to
527 do. */
528 if ((insn & 0xf000) != 0xd000)
530 _bfd_error_handler
531 /* xgettext:c-format */
532 (_("%pB: %#" PRIx64 ": warning: "
533 "R_SH_USES points to unrecognized insn 0x%x"),
534 abfd, (uint64_t) irel->r_offset, insn);
535 continue;
538 /* Get the address from which the register is being loaded. The
539 displacement in the mov.l instruction is quadrupled. It is a
540 displacement from four bytes after the movl instruction, but,
541 before adding in the PC address, two least significant bits
542 of the PC are cleared. We assume that the section is aligned
543 on a four byte boundary. */
544 paddr = insn & 0xff;
545 paddr *= 4;
546 paddr += (laddr + 4) &~ (bfd_vma) 3;
547 if (paddr >= sec->size)
549 _bfd_error_handler
550 /* xgettext:c-format */
551 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES load offset"),
552 abfd, (uint64_t) irel->r_offset);
553 continue;
556 /* Get the reloc for the address from which the register is
557 being loaded. This reloc will tell us which function is
558 actually being called. */
559 for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
560 if (irelfn->r_offset == paddr
561 && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32)
562 break;
563 if (irelfn >= irelend)
565 _bfd_error_handler
566 /* xgettext:c-format */
567 (_("%pB: %#" PRIx64 ": warning: could not find expected reloc"),
568 abfd, (uint64_t) paddr);
569 continue;
572 /* Read this BFD's symbols if we haven't done so already. */
573 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
575 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
576 if (isymbuf == NULL)
577 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
578 symtab_hdr->sh_info, 0,
579 NULL, NULL, NULL);
580 if (isymbuf == NULL)
581 goto error_return;
584 /* Get the value of the symbol referred to by the reloc. */
585 if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
587 /* A local symbol. */
588 Elf_Internal_Sym *isym;
590 isym = isymbuf + ELF32_R_SYM (irelfn->r_info);
591 if (isym->st_shndx
592 != (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec))
594 _bfd_error_handler
595 /* xgettext:c-format */
596 (_("%pB: %#" PRIx64 ": warning: symbol in unexpected section"),
597 abfd, (uint64_t) paddr);
598 continue;
601 symval = (isym->st_value
602 + sec->output_section->vma
603 + sec->output_offset);
605 else
607 unsigned long indx;
608 struct elf_link_hash_entry *h;
610 indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info;
611 h = elf_sym_hashes (abfd)[indx];
612 BFD_ASSERT (h != NULL);
613 if (h->root.type != bfd_link_hash_defined
614 && h->root.type != bfd_link_hash_defweak)
616 /* This appears to be a reference to an undefined
617 symbol. Just ignore it--it will be caught by the
618 regular reloc processing. */
619 continue;
622 symval = (h->root.u.def.value
623 + h->root.u.def.section->output_section->vma
624 + h->root.u.def.section->output_offset);
627 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
628 symval += bfd_get_32 (abfd, contents + paddr);
629 else
630 symval += irelfn->r_addend;
632 /* See if this function call can be shortened. */
633 foff = (symval
634 - (irel->r_offset
635 + sec->output_section->vma
636 + sec->output_offset
637 + 4));
638 /* A branch to an address beyond ours might be increased by an
639 .align that doesn't move when bytes behind us are deleted.
640 So, we add some slop in this calculation to allow for
641 that. */
642 if (foff < -0x1000 || foff >= 0x1000 - 8)
644 /* After all that work, we can't shorten this function call. */
645 continue;
648 /* Shorten the function call. */
650 /* For simplicity of coding, we are going to modify the section
651 contents, the section relocs, and the BFD symbol table. We
652 must tell the rest of the code not to free up this
653 information. It would be possible to instead create a table
654 of changes which have to be made, as is done in coff-mips.c;
655 that would be more work, but would require less memory when
656 the linker is run. */
658 elf_section_data (sec)->relocs = internal_relocs;
659 elf_section_data (sec)->this_hdr.contents = contents;
660 symtab_hdr->contents = (unsigned char *) isymbuf;
662 /* Replace the jmp/jsr with a bra/bsr. */
664 /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
665 replace the jmp/jsr with a bra/bsr. */
666 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W);
667 /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
668 here, but that only checks if the symbol is an external symbol,
669 not if the symbol is in a different section. Besides, we need
670 a consistent meaning for the relocation, so we just assume here that
671 the value of the symbol is not available. */
673 /* We can't fully resolve this yet, because the external
674 symbol value may be changed by future relaxing. We let
675 the final link phase handle it. */
676 if (bfd_get_16 (abfd, contents + irel->r_offset) & 0x0020)
677 bfd_put_16 (abfd, (bfd_vma) 0xa000, contents + irel->r_offset);
678 else
679 bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
681 irel->r_addend = -4;
683 /* When we calculated the symbol "value" we had an offset in the
684 DIR32's word in memory (we read and add it above). However,
685 the jsr we create does NOT have this offset encoded, so we
686 have to add it to the addend to preserve it. */
687 irel->r_addend += bfd_get_32 (abfd, contents + paddr);
689 /* See if there is another R_SH_USES reloc referring to the same
690 register load. */
691 for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
692 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES
693 && laddr == irelscan->r_offset + 4 + irelscan->r_addend)
694 break;
695 if (irelscan < irelend)
697 /* Some other function call depends upon this register load,
698 and we have not yet converted that function call.
699 Indeed, we may never be able to convert it. There is
700 nothing else we can do at this point. */
701 continue;
704 /* Look for a R_SH_COUNT reloc on the location where the
705 function address is stored. Do this before deleting any
706 bytes, to avoid confusion about the address. */
707 for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
708 if (irelcount->r_offset == paddr
709 && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT)
710 break;
712 /* Delete the register load. */
713 if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2))
714 goto error_return;
716 /* That will change things, so, just in case it permits some
717 other function call to come within range, we should relax
718 again. Note that this is not required, and it may be slow. */
719 *again = true;
721 /* Now check whether we got a COUNT reloc. */
722 if (irelcount >= irelend)
724 _bfd_error_handler
725 /* xgettext:c-format */
726 (_("%pB: %#" PRIx64 ": warning: "
727 "could not find expected COUNT reloc"),
728 abfd, (uint64_t) paddr);
729 continue;
732 /* The number of uses is stored in the r_addend field. We've
733 just deleted one. */
734 if (irelcount->r_addend == 0)
736 /* xgettext:c-format */
737 _bfd_error_handler (_("%pB: %#" PRIx64 ": warning: bad count"),
738 abfd, (uint64_t) paddr);
739 continue;
742 --irelcount->r_addend;
744 /* If there are no more uses, we can delete the address. Reload
745 the address from irelfn, in case it was changed by the
746 previous call to sh_elf_relax_delete_bytes. */
747 if (irelcount->r_addend == 0)
749 if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4))
750 goto error_return;
753 /* We've done all we can with that function call. */
756 /* Look for load and store instructions that we can align on four
757 byte boundaries. */
758 if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4
759 && have_code)
761 bool swapped;
763 /* Get the section contents. */
764 if (contents == NULL)
766 if (elf_section_data (sec)->this_hdr.contents != NULL)
767 contents = elf_section_data (sec)->this_hdr.contents;
768 else
770 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
771 goto error_return;
775 if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents,
776 &swapped))
777 goto error_return;
779 if (swapped)
781 elf_section_data (sec)->relocs = internal_relocs;
782 elf_section_data (sec)->this_hdr.contents = contents;
783 symtab_hdr->contents = (unsigned char *) isymbuf;
787 if (isymbuf != NULL
788 && symtab_hdr->contents != (unsigned char *) isymbuf)
790 if (! link_info->keep_memory)
791 free (isymbuf);
792 else
794 /* Cache the symbols for elf_link_input_bfd. */
795 symtab_hdr->contents = (unsigned char *) isymbuf;
799 if (contents != NULL
800 && elf_section_data (sec)->this_hdr.contents != contents)
802 if (! link_info->keep_memory)
803 free (contents);
804 else
806 /* Cache the section contents for elf_link_input_bfd. */
807 elf_section_data (sec)->this_hdr.contents = contents;
811 if (elf_section_data (sec)->relocs != internal_relocs)
812 free (internal_relocs);
814 return true;
816 error_return:
817 if (symtab_hdr->contents != (unsigned char *) isymbuf)
818 free (isymbuf);
819 if (elf_section_data (sec)->this_hdr.contents != contents)
820 free (contents);
821 if (elf_section_data (sec)->relocs != internal_relocs)
822 free (internal_relocs);
824 return false;
827 /* Delete some bytes from a section while relaxing. FIXME: There is a
828 lot of duplication between this function and sh_relax_delete_bytes
829 in coff-sh.c. */
831 static bool
832 sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr,
833 int count)
835 Elf_Internal_Shdr *symtab_hdr;
836 unsigned int sec_shndx;
837 bfd_byte *contents;
838 Elf_Internal_Rela *irel, *irelend;
839 Elf_Internal_Rela *irelalign;
840 bfd_vma toaddr;
841 Elf_Internal_Sym *isymbuf, *isym, *isymend;
842 struct elf_link_hash_entry **sym_hashes;
843 struct elf_link_hash_entry **end_hashes;
844 unsigned int symcount;
845 asection *o;
847 symtab_hdr = &elf_symtab_hdr (abfd);
848 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
850 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
852 contents = elf_section_data (sec)->this_hdr.contents;
854 /* The deletion must stop at the next ALIGN reloc for an alignment
855 power larger than the number of bytes we are deleting. */
857 irelalign = NULL;
858 toaddr = sec->size;
860 irel = elf_section_data (sec)->relocs;
861 irelend = irel + sec->reloc_count;
862 for (; irel < irelend; irel++)
864 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
865 && irel->r_offset > addr
866 && count < (1 << irel->r_addend))
868 irelalign = irel;
869 toaddr = irel->r_offset;
870 break;
874 /* Actually delete the bytes. */
875 memmove (contents + addr, contents + addr + count,
876 (size_t) (toaddr - addr - count));
877 if (irelalign == NULL)
878 sec->size -= count;
879 else
881 int i;
883 #define NOP_OPCODE (0x0009)
885 BFD_ASSERT ((count & 1) == 0);
886 for (i = 0; i < count; i += 2)
887 bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
890 /* Adjust all the relocs. */
891 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
893 bfd_vma nraddr, stop;
894 bfd_vma start = 0;
895 int insn = 0;
896 int off, adjust, oinsn;
897 bfd_signed_vma voff = 0;
898 bool overflow;
900 /* Get the new reloc address. */
901 nraddr = irel->r_offset;
902 if ((irel->r_offset > addr
903 && irel->r_offset < toaddr)
904 || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
905 && irel->r_offset == toaddr))
906 nraddr -= count;
908 /* See if this reloc was for the bytes we have deleted, in which
909 case we no longer care about it. Don't delete relocs which
910 represent addresses, though. */
911 if (irel->r_offset >= addr
912 && irel->r_offset < addr + count
913 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN
914 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE
915 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA
916 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL)
917 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
918 (int) R_SH_NONE);
920 /* If this is a PC relative reloc, see if the range it covers
921 includes the bytes we have deleted. */
922 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
924 default:
925 break;
927 case R_SH_DIR8WPN:
928 case R_SH_IND12W:
929 case R_SH_DIR8WPZ:
930 case R_SH_DIR8WPL:
931 start = irel->r_offset;
932 insn = bfd_get_16 (abfd, contents + nraddr);
933 break;
936 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
938 default:
939 start = stop = addr;
940 break;
942 case R_SH_DIR32:
943 /* If this reloc is against a symbol defined in this
944 section, and the symbol will not be adjusted below, we
945 must check the addend to see it will put the value in
946 range to be adjusted, and hence must be changed. */
947 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
949 isym = isymbuf + ELF32_R_SYM (irel->r_info);
950 if (isym->st_shndx == sec_shndx
951 && (isym->st_value <= addr
952 || isym->st_value >= toaddr))
954 bfd_vma val;
956 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
958 val = bfd_get_32 (abfd, contents + nraddr);
959 val += isym->st_value;
960 if (val > addr && val < toaddr)
961 bfd_put_32 (abfd, val - count, contents + nraddr);
963 else
965 val = isym->st_value + irel->r_addend;
966 if (val > addr && val < toaddr)
967 irel->r_addend -= count;
971 start = stop = addr;
972 break;
974 case R_SH_DIR8WPN:
975 off = insn & 0xff;
976 if (off & 0x80)
977 off -= 0x100;
978 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
979 break;
981 case R_SH_IND12W:
982 off = insn & 0xfff;
983 if (! off)
985 /* This has been made by previous relaxation. Since the
986 relocation will be against an external symbol, the
987 final relocation will just do the right thing. */
988 start = stop = addr;
990 else
992 if (off & 0x800)
993 off -= 0x1000;
994 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
996 /* The addend will be against the section symbol, thus
997 for adjusting the addend, the relevant start is the
998 start of the section.
999 N.B. If we want to abandon in-place changes here and
1000 test directly using symbol + addend, we have to take into
1001 account that the addend has already been adjusted by -4. */
1002 if (stop > addr && stop < toaddr)
1003 irel->r_addend -= count;
1005 break;
1007 case R_SH_DIR8WPZ:
1008 off = insn & 0xff;
1009 stop = start + 4 + off * 2;
1010 break;
1012 case R_SH_DIR8WPL:
1013 off = insn & 0xff;
1014 stop = (start & ~(bfd_vma) 3) + 4 + off * 4;
1015 break;
1017 case R_SH_SWITCH8:
1018 case R_SH_SWITCH16:
1019 case R_SH_SWITCH32:
1020 /* These relocs types represent
1021 .word L2-L1
1022 The r_addend field holds the difference between the reloc
1023 address and L1. That is the start of the reloc, and
1024 adding in the contents gives us the top. We must adjust
1025 both the r_offset field and the section contents.
1026 N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1027 and the elf bfd r_offset is called r_vaddr. */
1029 stop = irel->r_offset;
1030 start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend);
1032 if (start > addr
1033 && start < toaddr
1034 && (stop <= addr || stop >= toaddr))
1035 irel->r_addend += count;
1036 else if (stop > addr
1037 && stop < toaddr
1038 && (start <= addr || start >= toaddr))
1039 irel->r_addend -= count;
1041 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16)
1042 voff = bfd_get_signed_16 (abfd, contents + nraddr);
1043 else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8)
1044 voff = bfd_get_8 (abfd, contents + nraddr);
1045 else
1046 voff = bfd_get_signed_32 (abfd, contents + nraddr);
1047 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1049 break;
1051 case R_SH_USES:
1052 start = irel->r_offset;
1053 stop = (bfd_vma) ((bfd_signed_vma) start
1054 + (long) irel->r_addend
1055 + 4);
1056 break;
1059 if (start > addr
1060 && start < toaddr
1061 && (stop <= addr || stop >= toaddr))
1062 adjust = count;
1063 else if (stop > addr
1064 && stop < toaddr
1065 && (start <= addr || start >= toaddr))
1066 adjust = - count;
1067 else
1068 adjust = 0;
1070 if (adjust != 0)
1072 oinsn = insn;
1073 overflow = false;
1074 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
1076 default:
1077 abort ();
1078 break;
1080 case R_SH_DIR8WPN:
1081 case R_SH_DIR8WPZ:
1082 insn += adjust / 2;
1083 if ((oinsn & 0xff00) != (insn & 0xff00))
1084 overflow = true;
1085 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1086 break;
1088 case R_SH_IND12W:
1089 insn += adjust / 2;
1090 if ((oinsn & 0xf000) != (insn & 0xf000))
1091 overflow = true;
1092 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1093 break;
1095 case R_SH_DIR8WPL:
1096 BFD_ASSERT (adjust == count || count >= 4);
1097 if (count >= 4)
1098 insn += adjust / 4;
1099 else
1101 if ((irel->r_offset & 3) == 0)
1102 ++insn;
1104 if ((oinsn & 0xff00) != (insn & 0xff00))
1105 overflow = true;
1106 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1107 break;
1109 case R_SH_SWITCH8:
1110 voff += adjust;
1111 if (voff < 0 || voff >= 0xff)
1112 overflow = true;
1113 bfd_put_8 (abfd, voff, contents + nraddr);
1114 break;
1116 case R_SH_SWITCH16:
1117 voff += adjust;
1118 if (voff < - 0x8000 || voff >= 0x8000)
1119 overflow = true;
1120 bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr);
1121 break;
1123 case R_SH_SWITCH32:
1124 voff += adjust;
1125 bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr);
1126 break;
1128 case R_SH_USES:
1129 irel->r_addend += adjust;
1130 break;
1133 if (overflow)
1135 _bfd_error_handler
1136 /* xgettext:c-format */
1137 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1138 abfd, (uint64_t) irel->r_offset);
1139 bfd_set_error (bfd_error_bad_value);
1140 return false;
1144 irel->r_offset = nraddr;
1147 /* Look through all the other sections. If there contain any IMM32
1148 relocs against internal symbols which we are not going to adjust
1149 below, we may need to adjust the addends. */
1150 for (o = abfd->sections; o != NULL; o = o->next)
1152 Elf_Internal_Rela *internal_relocs;
1153 Elf_Internal_Rela *irelscan, *irelscanend;
1154 bfd_byte *ocontents;
1156 if (o == sec
1157 || (o->flags & SEC_RELOC) == 0
1158 || o->reloc_count == 0)
1159 continue;
1161 /* We always cache the relocs. Perhaps, if info->keep_memory is
1162 FALSE, we should free them, if we are permitted to, when we
1163 leave sh_coff_relax_section. */
1164 internal_relocs = (_bfd_elf_link_read_relocs
1165 (abfd, o, NULL, (Elf_Internal_Rela *) NULL, true));
1166 if (internal_relocs == NULL)
1167 return false;
1169 ocontents = NULL;
1170 irelscanend = internal_relocs + o->reloc_count;
1171 for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
1173 /* Dwarf line numbers use R_SH_SWITCH32 relocs. */
1174 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32)
1176 bfd_vma start, stop;
1177 bfd_signed_vma voff;
1179 if (ocontents == NULL)
1181 if (elf_section_data (o)->this_hdr.contents != NULL)
1182 ocontents = elf_section_data (o)->this_hdr.contents;
1183 else
1185 /* We always cache the section contents.
1186 Perhaps, if info->keep_memory is FALSE, we
1187 should free them, if we are permitted to,
1188 when we leave sh_coff_relax_section. */
1189 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1191 free (ocontents);
1192 return false;
1195 elf_section_data (o)->this_hdr.contents = ocontents;
1199 stop = irelscan->r_offset;
1200 start
1201 = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend);
1203 /* STOP is in a different section, so it won't change. */
1204 if (start > addr && start < toaddr)
1205 irelscan->r_addend += count;
1207 voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset);
1208 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1210 if (start > addr
1211 && start < toaddr
1212 && (stop <= addr || stop >= toaddr))
1213 bfd_put_signed_32 (abfd, (bfd_vma) voff + count,
1214 ocontents + irelscan->r_offset);
1215 else if (stop > addr
1216 && stop < toaddr
1217 && (start <= addr || start >= toaddr))
1218 bfd_put_signed_32 (abfd, (bfd_vma) voff - count,
1219 ocontents + irelscan->r_offset);
1222 if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32)
1223 continue;
1225 if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info)
1226 continue;
1229 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1230 if (isym->st_shndx == sec_shndx
1231 && (isym->st_value <= addr
1232 || isym->st_value >= toaddr))
1234 bfd_vma val;
1236 if (ocontents == NULL)
1238 if (elf_section_data (o)->this_hdr.contents != NULL)
1239 ocontents = elf_section_data (o)->this_hdr.contents;
1240 else
1242 /* We always cache the section contents.
1243 Perhaps, if info->keep_memory is FALSE, we
1244 should free them, if we are permitted to,
1245 when we leave sh_coff_relax_section. */
1246 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1248 free (ocontents);
1249 return false;
1252 elf_section_data (o)->this_hdr.contents = ocontents;
1256 val = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
1257 val += isym->st_value;
1258 if (val > addr && val < toaddr)
1259 bfd_put_32 (abfd, val - count,
1260 ocontents + irelscan->r_offset);
1265 /* Adjust the local symbols defined in this section. */
1266 isymend = isymbuf + symtab_hdr->sh_info;
1267 for (isym = isymbuf; isym < isymend; isym++)
1269 if (isym->st_shndx == sec_shndx
1270 && isym->st_value > addr
1271 && isym->st_value < toaddr)
1272 isym->st_value -= count;
1275 /* Now adjust the global symbols defined in this section. */
1276 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1277 - symtab_hdr->sh_info);
1278 sym_hashes = elf_sym_hashes (abfd);
1279 end_hashes = sym_hashes + symcount;
1280 for (; sym_hashes < end_hashes; sym_hashes++)
1282 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1283 if ((sym_hash->root.type == bfd_link_hash_defined
1284 || sym_hash->root.type == bfd_link_hash_defweak)
1285 && sym_hash->root.u.def.section == sec
1286 && sym_hash->root.u.def.value > addr
1287 && sym_hash->root.u.def.value < toaddr)
1289 sym_hash->root.u.def.value -= count;
1293 /* See if we can move the ALIGN reloc forward. We have adjusted
1294 r_offset for it already. */
1295 if (irelalign != NULL)
1297 bfd_vma alignto, alignaddr;
1299 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
1300 alignaddr = BFD_ALIGN (irelalign->r_offset,
1301 1 << irelalign->r_addend);
1302 if (alignto != alignaddr)
1304 /* Tail recursion. */
1305 return sh_elf_relax_delete_bytes (abfd, sec, alignaddr,
1306 (int) (alignto - alignaddr));
1310 return true;
1313 /* Look for loads and stores which we can align to four byte
1314 boundaries. This is like sh_align_loads in coff-sh.c. */
1316 static bool
1317 sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1318 Elf_Internal_Rela *internal_relocs,
1319 bfd_byte *contents ATTRIBUTE_UNUSED,
1320 bool *pswapped)
1322 Elf_Internal_Rela *irel, *irelend;
1323 bfd_vma *labels = NULL;
1324 bfd_vma *label, *label_end;
1325 bfd_size_type amt;
1327 *pswapped = false;
1329 irelend = internal_relocs + sec->reloc_count;
1331 /* Get all the addresses with labels on them. */
1332 amt = sec->reloc_count;
1333 amt *= sizeof (bfd_vma);
1334 labels = (bfd_vma *) bfd_malloc (amt);
1335 if (labels == NULL)
1336 goto error_return;
1337 label_end = labels;
1338 for (irel = internal_relocs; irel < irelend; irel++)
1340 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL)
1342 *label_end = irel->r_offset;
1343 ++label_end;
1347 /* Note that the assembler currently always outputs relocs in
1348 address order. If that ever changes, this code will need to sort
1349 the label values and the relocs. */
1351 label = labels;
1353 for (irel = internal_relocs; irel < irelend; irel++)
1355 bfd_vma start, stop;
1357 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE)
1358 continue;
1360 start = irel->r_offset;
1362 for (irel++; irel < irelend; irel++)
1363 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA)
1364 break;
1365 if (irel < irelend)
1366 stop = irel->r_offset;
1367 else
1368 stop = sec->size;
1370 if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns,
1371 internal_relocs, &label,
1372 label_end, start, stop, pswapped))
1373 goto error_return;
1376 free (labels);
1378 return true;
1380 error_return:
1381 free (labels);
1382 return false;
1385 /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */
1387 static bool
1388 sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs,
1389 bfd_byte *contents, bfd_vma addr)
1391 Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs;
1392 unsigned short i1, i2;
1393 Elf_Internal_Rela *irel, *irelend;
1395 /* Swap the instructions themselves. */
1396 i1 = bfd_get_16 (abfd, contents + addr);
1397 i2 = bfd_get_16 (abfd, contents + addr + 2);
1398 bfd_put_16 (abfd, (bfd_vma) i2, contents + addr);
1399 bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2);
1401 /* Adjust all reloc addresses. */
1402 irelend = internal_relocs + sec->reloc_count;
1403 for (irel = internal_relocs; irel < irelend; irel++)
1405 enum elf_sh_reloc_type type;
1406 int add;
1408 /* There are a few special types of relocs that we don't want to
1409 adjust. These relocs do not apply to the instruction itself,
1410 but are only associated with the address. */
1411 type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info);
1412 if (type == R_SH_ALIGN
1413 || type == R_SH_CODE
1414 || type == R_SH_DATA
1415 || type == R_SH_LABEL)
1416 continue;
1418 /* If an R_SH_USES reloc points to one of the addresses being
1419 swapped, we must adjust it. It would be incorrect to do this
1420 for a jump, though, since we want to execute both
1421 instructions after the jump. (We have avoided swapping
1422 around a label, so the jump will not wind up executing an
1423 instruction it shouldn't). */
1424 if (type == R_SH_USES)
1426 bfd_vma off;
1428 off = irel->r_offset + 4 + irel->r_addend;
1429 if (off == addr)
1430 irel->r_offset += 2;
1431 else if (off == addr + 2)
1432 irel->r_offset -= 2;
1435 if (irel->r_offset == addr)
1437 irel->r_offset += 2;
1438 add = -2;
1440 else if (irel->r_offset == addr + 2)
1442 irel->r_offset -= 2;
1443 add = 2;
1445 else
1446 add = 0;
1448 if (add != 0)
1450 bfd_byte *loc;
1451 unsigned short insn, oinsn;
1452 bool overflow;
1454 loc = contents + irel->r_offset;
1455 overflow = false;
1456 switch (type)
1458 default:
1459 break;
1461 case R_SH_DIR8WPN:
1462 case R_SH_DIR8WPZ:
1463 insn = bfd_get_16 (abfd, loc);
1464 oinsn = insn;
1465 insn += add / 2;
1466 if ((oinsn & 0xff00) != (insn & 0xff00))
1467 overflow = true;
1468 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1469 break;
1471 case R_SH_IND12W:
1472 insn = bfd_get_16 (abfd, loc);
1473 oinsn = insn;
1474 insn += add / 2;
1475 if ((oinsn & 0xf000) != (insn & 0xf000))
1476 overflow = true;
1477 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1478 break;
1480 case R_SH_DIR8WPL:
1481 /* This reloc ignores the least significant 3 bits of
1482 the program counter before adding in the offset.
1483 This means that if ADDR is at an even address, the
1484 swap will not affect the offset. If ADDR is an at an
1485 odd address, then the instruction will be crossing a
1486 four byte boundary, and must be adjusted. */
1487 if ((addr & 3) != 0)
1489 insn = bfd_get_16 (abfd, loc);
1490 oinsn = insn;
1491 insn += add / 2;
1492 if ((oinsn & 0xff00) != (insn & 0xff00))
1493 overflow = true;
1494 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1497 break;
1500 if (overflow)
1502 _bfd_error_handler
1503 /* xgettext:c-format */
1504 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1505 abfd, (uint64_t) irel->r_offset);
1506 bfd_set_error (bfd_error_bad_value);
1507 return false;
1512 return true;
1515 /* Describes one of the various PLT styles. */
1517 struct elf_sh_plt_info
1519 /* The template for the first PLT entry, or NULL if there is no special
1520 first entry. */
1521 const bfd_byte *plt0_entry;
1523 /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */
1524 bfd_vma plt0_entry_size;
1526 /* Index I is the offset into PLT0_ENTRY of a pointer to
1527 _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE
1528 if there is no such pointer. */
1529 bfd_vma plt0_got_fields[3];
1531 /* The template for a symbol's PLT entry. */
1532 const bfd_byte *symbol_entry;
1534 /* The size of SYMBOL_ENTRY in bytes. */
1535 bfd_vma symbol_entry_size;
1537 /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used
1538 on all targets. The comments by each member indicate the value
1539 that the field must hold. */
1540 struct {
1541 bfd_vma got_entry; /* the address of the symbol's .got.plt entry */
1542 bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */
1543 bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */
1544 bool got20; /* TRUE if got_entry points to a movi20 instruction
1545 (instead of a constant pool entry). */
1546 } symbol_fields;
1548 /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
1549 bfd_vma symbol_resolve_offset;
1551 /* A different PLT layout which can be used for the first
1552 MAX_SHORT_PLT entries. It must share the same plt0. NULL in
1553 other cases. */
1554 const struct elf_sh_plt_info *short_plt;
1557 /* The size in bytes of an entry in the procedure linkage table. */
1559 #define ELF_PLT_ENTRY_SIZE 28
1561 /* First entry in an absolute procedure linkage table look like this. */
1563 /* Note - this code has been "optimised" not to use r2. r2 is used by
1564 GCC to return the address of large structures, so it should not be
1565 corrupted here. This does mean however, that this PLT does not conform
1566 to the SH PIC ABI. That spec says that r0 contains the type of the PLT
1567 and r2 contains the GOT id. This version stores the GOT id in r0 and
1568 ignores the type. Loaders can easily detect this difference however,
1569 since the type will always be 0 or 8, and the GOT ids will always be
1570 greater than or equal to 12. */
1571 static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1573 0xd0, 0x05, /* mov.l 2f,r0 */
1574 0x60, 0x02, /* mov.l @r0,r0 */
1575 0x2f, 0x06, /* mov.l r0,@-r15 */
1576 0xd0, 0x03, /* mov.l 1f,r0 */
1577 0x60, 0x02, /* mov.l @r0,r0 */
1578 0x40, 0x2b, /* jmp @r0 */
1579 0x60, 0xf6, /* mov.l @r15+,r0 */
1580 0x00, 0x09, /* nop */
1581 0x00, 0x09, /* nop */
1582 0x00, 0x09, /* nop */
1583 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1584 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1587 static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1589 0x05, 0xd0, /* mov.l 2f,r0 */
1590 0x02, 0x60, /* mov.l @r0,r0 */
1591 0x06, 0x2f, /* mov.l r0,@-r15 */
1592 0x03, 0xd0, /* mov.l 1f,r0 */
1593 0x02, 0x60, /* mov.l @r0,r0 */
1594 0x2b, 0x40, /* jmp @r0 */
1595 0xf6, 0x60, /* mov.l @r15+,r0 */
1596 0x09, 0x00, /* nop */
1597 0x09, 0x00, /* nop */
1598 0x09, 0x00, /* nop */
1599 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1600 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1603 /* Sebsequent entries in an absolute procedure linkage table look like
1604 this. */
1606 static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1608 0xd0, 0x04, /* mov.l 1f,r0 */
1609 0x60, 0x02, /* mov.l @(r0,r12),r0 */
1610 0xd1, 0x02, /* mov.l 0f,r1 */
1611 0x40, 0x2b, /* jmp @r0 */
1612 0x60, 0x13, /* mov r1,r0 */
1613 0xd1, 0x03, /* mov.l 2f,r1 */
1614 0x40, 0x2b, /* jmp @r0 */
1615 0x00, 0x09, /* nop */
1616 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1617 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1618 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1621 static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1623 0x04, 0xd0, /* mov.l 1f,r0 */
1624 0x02, 0x60, /* mov.l @r0,r0 */
1625 0x02, 0xd1, /* mov.l 0f,r1 */
1626 0x2b, 0x40, /* jmp @r0 */
1627 0x13, 0x60, /* mov r1,r0 */
1628 0x03, 0xd1, /* mov.l 2f,r1 */
1629 0x2b, 0x40, /* jmp @r0 */
1630 0x09, 0x00, /* nop */
1631 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1632 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1633 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1636 /* Entries in a PIC procedure linkage table look like this. */
1638 static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1640 0xd0, 0x04, /* mov.l 1f,r0 */
1641 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1642 0x40, 0x2b, /* jmp @r0 */
1643 0x00, 0x09, /* nop */
1644 0x50, 0xc2, /* mov.l @(8,r12),r0 */
1645 0xd1, 0x03, /* mov.l 2f,r1 */
1646 0x40, 0x2b, /* jmp @r0 */
1647 0x50, 0xc1, /* mov.l @(4,r12),r0 */
1648 0x00, 0x09, /* nop */
1649 0x00, 0x09, /* nop */
1650 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1651 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1654 static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1656 0x04, 0xd0, /* mov.l 1f,r0 */
1657 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1658 0x2b, 0x40, /* jmp @r0 */
1659 0x09, 0x00, /* nop */
1660 0xc2, 0x50, /* mov.l @(8,r12),r0 */
1661 0x03, 0xd1, /* mov.l 2f,r1 */
1662 0x2b, 0x40, /* jmp @r0 */
1663 0xc1, 0x50, /* mov.l @(4,r12),r0 */
1664 0x09, 0x00, /* nop */
1665 0x09, 0x00, /* nop */
1666 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1667 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1670 static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1673 /* Big-endian non-PIC. */
1674 elf_sh_plt0_entry_be,
1675 ELF_PLT_ENTRY_SIZE,
1676 { MINUS_ONE, 24, 20 },
1677 elf_sh_plt_entry_be,
1678 ELF_PLT_ENTRY_SIZE,
1679 { 20, 16, 24, false },
1681 NULL
1684 /* Little-endian non-PIC. */
1685 elf_sh_plt0_entry_le,
1686 ELF_PLT_ENTRY_SIZE,
1687 { MINUS_ONE, 24, 20 },
1688 elf_sh_plt_entry_le,
1689 ELF_PLT_ENTRY_SIZE,
1690 { 20, 16, 24, false },
1692 NULL
1697 /* Big-endian PIC. */
1698 elf_sh_plt0_entry_be,
1699 ELF_PLT_ENTRY_SIZE,
1700 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1701 elf_sh_pic_plt_entry_be,
1702 ELF_PLT_ENTRY_SIZE,
1703 { 20, MINUS_ONE, 24, false },
1705 NULL
1708 /* Little-endian PIC. */
1709 elf_sh_plt0_entry_le,
1710 ELF_PLT_ENTRY_SIZE,
1711 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1712 elf_sh_pic_plt_entry_le,
1713 ELF_PLT_ENTRY_SIZE,
1714 { 20, MINUS_ONE, 24, false },
1716 NULL
1721 #define VXWORKS_PLT_HEADER_SIZE 12
1722 #define VXWORKS_PLT_ENTRY_SIZE 24
1724 static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] =
1726 0xd1, 0x01, /* mov.l @(8,pc),r1 */
1727 0x61, 0x12, /* mov.l @r1,r1 */
1728 0x41, 0x2b, /* jmp @r1 */
1729 0x00, 0x09, /* nop */
1730 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1733 static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] =
1735 0x01, 0xd1, /* mov.l @(8,pc),r1 */
1736 0x12, 0x61, /* mov.l @r1,r1 */
1737 0x2b, 0x41, /* jmp @r1 */
1738 0x09, 0x00, /* nop */
1739 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1742 static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1744 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1745 0x60, 0x02, /* mov.l @r0,r0 */
1746 0x40, 0x2b, /* jmp @r0 */
1747 0x00, 0x09, /* nop */
1748 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1749 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1750 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */
1751 0x00, 0x09, /* nop */
1752 0x00, 0x09, /* nop */
1753 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1756 static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1758 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1759 0x02, 0x60, /* mov.l @r0,r0 */
1760 0x2b, 0x40, /* jmp @r0 */
1761 0x09, 0x00, /* nop */
1762 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1763 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1764 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */
1765 0x09, 0x00, /* nop */
1766 0x09, 0x00, /* nop */
1767 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1770 static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1772 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1773 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1774 0x40, 0x2b, /* jmp @r0 */
1775 0x00, 0x09, /* nop */
1776 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1777 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1778 0x51, 0xc2, /* mov.l @(8,r12),r1 */
1779 0x41, 0x2b, /* jmp @r1 */
1780 0x00, 0x09, /* nop */
1781 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1784 static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1786 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1787 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1788 0x2b, 0x40, /* jmp @r0 */
1789 0x09, 0x00, /* nop */
1790 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1791 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1792 0xc2, 0x51, /* mov.l @(8,r12),r1 */
1793 0x2b, 0x41, /* jmp @r1 */
1794 0x09, 0x00, /* nop */
1795 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1798 static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = {
1801 /* Big-endian non-PIC. */
1802 vxworks_sh_plt0_entry_be,
1803 VXWORKS_PLT_HEADER_SIZE,
1804 { MINUS_ONE, MINUS_ONE, 8 },
1805 vxworks_sh_plt_entry_be,
1806 VXWORKS_PLT_ENTRY_SIZE,
1807 { 8, 14, 20, false },
1809 NULL
1812 /* Little-endian non-PIC. */
1813 vxworks_sh_plt0_entry_le,
1814 VXWORKS_PLT_HEADER_SIZE,
1815 { MINUS_ONE, MINUS_ONE, 8 },
1816 vxworks_sh_plt_entry_le,
1817 VXWORKS_PLT_ENTRY_SIZE,
1818 { 8, 14, 20, false },
1820 NULL
1825 /* Big-endian PIC. */
1826 NULL,
1828 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1829 vxworks_sh_pic_plt_entry_be,
1830 VXWORKS_PLT_ENTRY_SIZE,
1831 { 8, MINUS_ONE, 20, false },
1833 NULL
1836 /* Little-endian PIC. */
1837 NULL,
1839 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1840 vxworks_sh_pic_plt_entry_le,
1841 VXWORKS_PLT_ENTRY_SIZE,
1842 { 8, MINUS_ONE, 20, false },
1844 NULL
1849 /* FDPIC PLT entries. Two unimplemented optimizations for lazy
1850 binding are to omit the lazy binding stub when linking with -z now
1851 and to move lazy binding stubs into a separate region for better
1852 cache behavior. */
1854 #define FDPIC_PLT_ENTRY_SIZE 28
1855 #define FDPIC_PLT_LAZY_OFFSET 20
1857 /* FIXME: The lazy binding stub requires a plt0 - which may need to be
1858 duplicated if it is out of range, or which can be inlined. So
1859 right now it is always inlined, which wastes a word per stub. It
1860 might be easier to handle the duplication if we put the lazy
1861 stubs separately. */
1863 static const bfd_byte fdpic_sh_plt_entry_be[FDPIC_PLT_ENTRY_SIZE] =
1865 0xd0, 0x02, /* mov.l @(12,pc),r0 */
1866 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1867 0x70, 0x04, /* add #4, r0 */
1868 0x41, 0x2b, /* jmp @r1 */
1869 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1870 0x00, 0x09, /* nop */
1871 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1872 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1873 0x60, 0xc2, /* mov.l @r12,r0 */
1874 0x40, 0x2b, /* jmp @r0 */
1875 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1876 0x00, 0x09, /* nop */
1879 static const bfd_byte fdpic_sh_plt_entry_le[FDPIC_PLT_ENTRY_SIZE] =
1881 0x02, 0xd0, /* mov.l @(12,pc),r0 */
1882 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1883 0x04, 0x70, /* add #4, r0 */
1884 0x2b, 0x41, /* jmp @r1 */
1885 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1886 0x09, 0x00, /* nop */
1887 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1888 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1889 0xc2, 0x60, /* mov.l @r12,r0 */
1890 0x2b, 0x40, /* jmp @r0 */
1891 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1892 0x09, 0x00, /* nop */
1895 static const struct elf_sh_plt_info fdpic_sh_plts[2] = {
1897 /* Big-endian PIC. */
1898 NULL,
1900 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1901 fdpic_sh_plt_entry_be,
1902 FDPIC_PLT_ENTRY_SIZE,
1903 { 12, MINUS_ONE, 16, false },
1904 FDPIC_PLT_LAZY_OFFSET,
1905 NULL
1908 /* Little-endian PIC. */
1909 NULL,
1911 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1912 fdpic_sh_plt_entry_le,
1913 FDPIC_PLT_ENTRY_SIZE,
1914 { 12, MINUS_ONE, 16, false },
1915 FDPIC_PLT_LAZY_OFFSET,
1916 NULL
1920 /* On SH2A, we can use the movi20 instruction to generate shorter PLT
1921 entries for the first 64K slots. We use the normal FDPIC PLT entry
1922 past that point; we could also use movi20s, which might be faster,
1923 but would not be any smaller. */
1925 #define FDPIC_SH2A_PLT_ENTRY_SIZE 24
1926 #define FDPIC_SH2A_PLT_LAZY_OFFSET 16
1928 static const bfd_byte fdpic_sh2a_plt_entry_be[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1930 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1931 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1932 0x70, 0x04, /* add #4, r0 */
1933 0x41, 0x2b, /* jmp @r1 */
1934 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1935 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1936 0x60, 0xc2, /* mov.l @r12,r0 */
1937 0x40, 0x2b, /* jmp @r0 */
1938 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1939 0x00, 0x09, /* nop */
1942 static const bfd_byte fdpic_sh2a_plt_entry_le[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1944 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1945 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1946 0x04, 0x70, /* add #4, r0 */
1947 0x2b, 0x41, /* jmp @r1 */
1948 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1949 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1950 0xc2, 0x60, /* mov.l @r12,r0 */
1951 0x2b, 0x40, /* jmp @r0 */
1952 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1953 0x09, 0x00, /* nop */
1956 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_be = {
1957 /* Big-endian FDPIC, max index 64K. */
1958 NULL,
1960 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1961 fdpic_sh2a_plt_entry_be,
1962 FDPIC_SH2A_PLT_ENTRY_SIZE,
1963 { 0, MINUS_ONE, 12, true },
1964 FDPIC_SH2A_PLT_LAZY_OFFSET,
1965 NULL
1968 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_le = {
1969 /* Little-endian FDPIC, max index 64K. */
1970 NULL,
1972 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1973 fdpic_sh2a_plt_entry_le,
1974 FDPIC_SH2A_PLT_ENTRY_SIZE,
1975 { 0, MINUS_ONE, 12, true },
1976 FDPIC_SH2A_PLT_LAZY_OFFSET,
1977 NULL
1980 static const struct elf_sh_plt_info fdpic_sh2a_plts[2] = {
1982 /* Big-endian PIC. */
1983 NULL,
1985 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1986 fdpic_sh_plt_entry_be,
1987 FDPIC_PLT_ENTRY_SIZE,
1988 { 12, MINUS_ONE, 16, false },
1989 FDPIC_PLT_LAZY_OFFSET,
1990 &fdpic_sh2a_short_plt_be
1993 /* Little-endian PIC. */
1994 NULL,
1996 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1997 fdpic_sh_plt_entry_le,
1998 FDPIC_PLT_ENTRY_SIZE,
1999 { 12, MINUS_ONE, 16, false },
2000 FDPIC_PLT_LAZY_OFFSET,
2001 &fdpic_sh2a_short_plt_le
2005 /* Return the type of PLT associated with ABFD. PIC_P is true if
2006 the object is position-independent. */
2008 static const struct elf_sh_plt_info *
2009 get_plt_info (bfd *abfd, bool pic_p)
2011 if (fdpic_object_p (abfd))
2013 /* If any input file requires SH2A we can use a shorter PLT
2014 sequence. */
2015 if (sh_get_arch_from_bfd_mach (bfd_get_mach (abfd)) & arch_sh2a_base)
2016 return &fdpic_sh2a_plts[!bfd_big_endian (abfd)];
2017 else
2018 return &fdpic_sh_plts[!bfd_big_endian (abfd)];
2020 if (vxworks_object_p (abfd))
2021 return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)];
2022 return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
2025 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2026 VALUE is the field's value and CODE_P is true if VALUE refers to code,
2027 not data. */
2029 inline static void
2030 install_plt_field (bfd *output_bfd, bool code_p ATTRIBUTE_UNUSED,
2031 unsigned long value, bfd_byte *addr)
2033 bfd_put_32 (output_bfd, value, addr);
2036 /* The number of PLT entries which can use a shorter PLT, if any.
2037 Currently always 64K, since only SH-2A FDPIC uses this; a
2038 20-bit movi20 can address that many function descriptors below
2039 _GLOBAL_OFFSET_TABLE_. */
2040 #define MAX_SHORT_PLT 65536
2042 /* Return the index of the PLT entry at byte offset OFFSET. */
2044 static bfd_vma
2045 get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset)
2047 bfd_vma plt_index = 0;
2049 offset -= info->plt0_entry_size;
2050 if (info->short_plt != NULL)
2052 if (offset > MAX_SHORT_PLT * info->short_plt->symbol_entry_size)
2054 plt_index = MAX_SHORT_PLT;
2055 offset -= MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2057 else
2058 info = info->short_plt;
2060 return plt_index + offset / info->symbol_entry_size;
2063 /* Do the inverse operation. */
2065 static bfd_vma
2066 get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma plt_index)
2068 bfd_vma offset = 0;
2070 if (info->short_plt != NULL)
2072 if (plt_index > MAX_SHORT_PLT)
2074 offset = MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2075 plt_index -= MAX_SHORT_PLT;
2077 else
2078 info = info->short_plt;
2080 return (offset + info->plt0_entry_size
2081 + (plt_index * info->symbol_entry_size));
2084 union gotref
2086 bfd_signed_vma refcount;
2087 bfd_vma offset;
2090 /* sh ELF linker hash entry. */
2092 struct elf_sh_link_hash_entry
2094 struct elf_link_hash_entry root;
2096 bfd_signed_vma gotplt_refcount;
2098 /* A local function descriptor, for FDPIC. The refcount counts
2099 R_SH_FUNCDESC, R_SH_GOTOFFFUNCDESC, and R_SH_GOTOFFFUNCDESC20
2100 relocations; the PLT and GOT entry are accounted
2101 for separately. After adjust_dynamic_symbol, the offset is
2102 MINUS_ONE if there is no local descriptor (dynamic linker
2103 managed and no PLT entry, or undefined weak non-dynamic).
2104 During check_relocs we do not yet know whether the local
2105 descriptor will be canonical. */
2106 union gotref funcdesc;
2108 /* How many of the above refcounted relocations were R_SH_FUNCDESC,
2109 and thus require fixups or relocations. */
2110 bfd_signed_vma abs_funcdesc_refcount;
2112 enum got_type {
2113 GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE, GOT_FUNCDESC
2114 } got_type;
2117 #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2119 struct sh_elf_obj_tdata
2121 struct elf_obj_tdata root;
2123 /* got_type for each local got entry. */
2124 char *local_got_type;
2126 /* Function descriptor refcount and offset for each local symbol. */
2127 union gotref *local_funcdesc;
2130 #define sh_elf_tdata(abfd) \
2131 ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2133 #define sh_elf_local_got_type(abfd) \
2134 (sh_elf_tdata (abfd)->local_got_type)
2136 #define sh_elf_local_funcdesc(abfd) \
2137 (sh_elf_tdata (abfd)->local_funcdesc)
2139 #define is_sh_elf(bfd) \
2140 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2141 && elf_tdata (bfd) != NULL \
2142 && elf_object_id (bfd) == SH_ELF_DATA)
2144 /* Override the generic function because we need to store sh_elf_obj_tdata
2145 as the specific tdata. */
2147 static bool
2148 sh_elf_mkobject (bfd *abfd)
2150 return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata),
2151 SH_ELF_DATA);
2154 /* sh ELF linker hash table. */
2156 struct elf_sh_link_hash_table
2158 struct elf_link_hash_table root;
2160 /* Short-cuts to get to dynamic linker sections. */
2161 asection *sfuncdesc;
2162 asection *srelfuncdesc;
2163 asection *srofixup;
2165 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2166 asection *srelplt2;
2168 /* A counter or offset to track a TLS got entry. */
2169 union
2171 bfd_signed_vma refcount;
2172 bfd_vma offset;
2173 } tls_ldm_got;
2175 /* The type of PLT to use. */
2176 const struct elf_sh_plt_info *plt_info;
2178 /* True if the target system uses FDPIC. */
2179 bool fdpic_p;
2182 /* Traverse an sh ELF linker hash table. */
2184 #define sh_elf_link_hash_traverse(table, func, info) \
2185 (elf_link_hash_traverse \
2186 (&(table)->root, \
2187 (bool (*) (struct elf_link_hash_entry *, void *)) (func), \
2188 (info)))
2190 /* Get the sh ELF linker hash table from a link_info structure. */
2192 #define sh_elf_hash_table(p) \
2193 ((is_elf_hash_table ((p)->hash) \
2194 && elf_hash_table_id (elf_hash_table (p)) == SH_ELF_DATA) \
2195 ? (struct elf_sh_link_hash_table *) (p)->hash : NULL)
2197 /* Create an entry in an sh ELF linker hash table. */
2199 static struct bfd_hash_entry *
2200 sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2201 struct bfd_hash_table *table,
2202 const char *string)
2204 struct elf_sh_link_hash_entry *ret =
2205 (struct elf_sh_link_hash_entry *) entry;
2207 /* Allocate the structure if it has not already been allocated by a
2208 subclass. */
2209 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2210 ret = ((struct elf_sh_link_hash_entry *)
2211 bfd_hash_allocate (table,
2212 sizeof (struct elf_sh_link_hash_entry)));
2213 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2214 return (struct bfd_hash_entry *) ret;
2216 /* Call the allocation method of the superclass. */
2217 ret = ((struct elf_sh_link_hash_entry *)
2218 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2219 table, string));
2220 if (ret != (struct elf_sh_link_hash_entry *) NULL)
2222 ret->gotplt_refcount = 0;
2223 ret->funcdesc.refcount = 0;
2224 ret->abs_funcdesc_refcount = 0;
2225 ret->got_type = GOT_UNKNOWN;
2228 return (struct bfd_hash_entry *) ret;
2231 /* Create an sh ELF linker hash table. */
2233 static struct bfd_link_hash_table *
2234 sh_elf_link_hash_table_create (bfd *abfd)
2236 struct elf_sh_link_hash_table *ret;
2237 size_t amt = sizeof (struct elf_sh_link_hash_table);
2239 ret = (struct elf_sh_link_hash_table *) bfd_zmalloc (amt);
2240 if (ret == (struct elf_sh_link_hash_table *) NULL)
2241 return NULL;
2243 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2244 sh_elf_link_hash_newfunc,
2245 sizeof (struct elf_sh_link_hash_entry),
2246 SH_ELF_DATA))
2248 free (ret);
2249 return NULL;
2252 if (fdpic_object_p (abfd))
2254 ret->root.dt_pltgot_required = true;
2255 ret->fdpic_p = true;
2258 return &ret->root.root;
2261 static bool
2262 sh_elf_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2263 struct bfd_link_info *info, asection *p)
2265 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
2267 /* Non-FDPIC binaries do not need dynamic symbols for sections. */
2268 if (!htab->fdpic_p)
2269 return true;
2271 /* We need dynamic symbols for every section, since segments can
2272 relocate independently. */
2273 switch (elf_section_data (p)->this_hdr.sh_type)
2275 case SHT_PROGBITS:
2276 case SHT_NOBITS:
2277 /* If sh_type is yet undecided, assume it could be
2278 SHT_PROGBITS/SHT_NOBITS. */
2279 case SHT_NULL:
2280 return false;
2282 /* There shouldn't be section relative relocations
2283 against any other section. */
2284 default:
2285 return true;
2289 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2290 shortcuts to them in our hash table. */
2292 static bool
2293 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2295 struct elf_sh_link_hash_table *htab;
2297 if (! _bfd_elf_create_got_section (dynobj, info))
2298 return false;
2300 htab = sh_elf_hash_table (info);
2301 if (htab == NULL)
2302 return false;
2304 htab->sfuncdesc = bfd_make_section_anyway_with_flags (dynobj, ".got.funcdesc",
2305 (SEC_ALLOC | SEC_LOAD
2306 | SEC_HAS_CONTENTS
2307 | SEC_IN_MEMORY
2308 | SEC_LINKER_CREATED));
2309 if (htab->sfuncdesc == NULL
2310 || !bfd_set_section_alignment (htab->sfuncdesc, 2))
2311 return false;
2313 htab->srelfuncdesc = bfd_make_section_anyway_with_flags (dynobj,
2314 ".rela.got.funcdesc",
2315 (SEC_ALLOC | SEC_LOAD
2316 | SEC_HAS_CONTENTS
2317 | SEC_IN_MEMORY
2318 | SEC_LINKER_CREATED
2319 | SEC_READONLY));
2320 if (htab->srelfuncdesc == NULL
2321 || !bfd_set_section_alignment (htab->srelfuncdesc, 2))
2322 return false;
2324 /* Also create .rofixup. */
2325 htab->srofixup = bfd_make_section_anyway_with_flags (dynobj, ".rofixup",
2326 (SEC_ALLOC | SEC_LOAD
2327 | SEC_HAS_CONTENTS
2328 | SEC_IN_MEMORY
2329 | SEC_LINKER_CREATED
2330 | SEC_READONLY));
2331 if (htab->srofixup == NULL
2332 || !bfd_set_section_alignment (htab->srofixup, 2))
2333 return false;
2335 return true;
2338 /* Create dynamic sections when linking against a dynamic object. */
2340 static bool
2341 sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2343 struct elf_sh_link_hash_table *htab;
2344 flagword flags, pltflags;
2345 asection *s;
2346 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2347 int ptralign = 0;
2349 switch (bed->s->arch_size)
2351 case 32:
2352 ptralign = 2;
2353 break;
2355 case 64:
2356 ptralign = 3;
2357 break;
2359 default:
2360 bfd_set_error (bfd_error_bad_value);
2361 return false;
2364 htab = sh_elf_hash_table (info);
2365 if (htab == NULL)
2366 return false;
2368 if (htab->root.dynamic_sections_created)
2369 return true;
2371 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2372 .rel[a].bss sections. */
2374 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2375 | SEC_LINKER_CREATED);
2377 pltflags = flags;
2378 pltflags |= SEC_CODE;
2379 if (bed->plt_not_loaded)
2380 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2381 if (bed->plt_readonly)
2382 pltflags |= SEC_READONLY;
2384 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
2385 htab->root.splt = s;
2386 if (s == NULL
2387 || !bfd_set_section_alignment (s, bed->plt_alignment))
2388 return false;
2390 if (bed->want_plt_sym)
2392 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2393 .plt section. */
2394 struct elf_link_hash_entry *h;
2395 struct bfd_link_hash_entry *bh = NULL;
2397 if (! (_bfd_generic_link_add_one_symbol
2398 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2399 (bfd_vma) 0, (const char *) NULL, false,
2400 get_elf_backend_data (abfd)->collect, &bh)))
2401 return false;
2403 h = (struct elf_link_hash_entry *) bh;
2404 h->def_regular = 1;
2405 h->type = STT_OBJECT;
2406 htab->root.hplt = h;
2408 if (bfd_link_pic (info)
2409 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2410 return false;
2413 s = bfd_make_section_anyway_with_flags (abfd,
2414 bed->default_use_rela_p
2415 ? ".rela.plt" : ".rel.plt",
2416 flags | SEC_READONLY);
2417 htab->root.srelplt = s;
2418 if (s == NULL
2419 || !bfd_set_section_alignment (s, ptralign))
2420 return false;
2422 if (htab->root.sgot == NULL
2423 && !create_got_section (abfd, info))
2424 return false;
2426 if (bed->want_dynbss)
2428 /* The .dynbss section is a place to put symbols which are defined
2429 by dynamic objects, are referenced by regular objects, and are
2430 not functions. We must allocate space for them in the process
2431 image and use a R_*_COPY reloc to tell the dynamic linker to
2432 initialize them at run time. The linker script puts the .dynbss
2433 section into the .bss section of the final image. */
2434 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
2435 SEC_ALLOC | SEC_LINKER_CREATED);
2436 htab->root.sdynbss = s;
2437 if (s == NULL)
2438 return false;
2440 /* The .rel[a].bss section holds copy relocs. This section is not
2441 normally needed. We need to create it here, though, so that the
2442 linker will map it to an output section. We can't just create it
2443 only if we need it, because we will not know whether we need it
2444 until we have seen all the input files, and the first time the
2445 main linker code calls BFD after examining all the input files
2446 (size_dynamic_sections) the input sections have already been
2447 mapped to the output sections. If the section turns out not to
2448 be needed, we can discard it later. We will never need this
2449 section when generating a shared object, since they do not use
2450 copy relocs. */
2451 if (! bfd_link_pic (info))
2453 s = bfd_make_section_anyway_with_flags (abfd,
2454 (bed->default_use_rela_p
2455 ? ".rela.bss" : ".rel.bss"),
2456 flags | SEC_READONLY);
2457 htab->root.srelbss = s;
2458 if (s == NULL
2459 || !bfd_set_section_alignment (s, ptralign))
2460 return false;
2464 if (htab->root.target_os == is_vxworks)
2466 if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2467 return false;
2470 return true;
2473 /* Adjust a symbol defined by a dynamic object and referenced by a
2474 regular object. The current definition is in some section of the
2475 dynamic object, but we're not including those sections. We have to
2476 change the definition to something the rest of the link can
2477 understand. */
2479 static bool
2480 sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2481 struct elf_link_hash_entry *h)
2483 struct elf_sh_link_hash_table *htab;
2484 asection *s;
2486 htab = sh_elf_hash_table (info);
2487 if (htab == NULL)
2488 return false;
2490 /* Make sure we know what is going on here. */
2491 BFD_ASSERT (htab->root.dynobj != NULL
2492 && (h->needs_plt
2493 || h->is_weakalias
2494 || (h->def_dynamic
2495 && h->ref_regular
2496 && !h->def_regular)));
2498 /* If this is a function, put it in the procedure linkage table. We
2499 will fill in the contents of the procedure linkage table later,
2500 when we know the address of the .got section. */
2501 if (h->type == STT_FUNC
2502 || h->needs_plt)
2504 if (h->plt.refcount <= 0
2505 || SYMBOL_CALLS_LOCAL (info, h)
2506 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2507 && h->root.type == bfd_link_hash_undefweak))
2509 /* This case can occur if we saw a PLT reloc in an input
2510 file, but the symbol was never referred to by a dynamic
2511 object. In such a case, we don't actually need to build
2512 a procedure linkage table, and we can just do a REL32
2513 reloc instead. */
2514 h->plt.offset = (bfd_vma) -1;
2515 h->needs_plt = 0;
2518 return true;
2520 else
2521 h->plt.offset = (bfd_vma) -1;
2523 /* If this is a weak symbol, and there is a real definition, the
2524 processor independent code will have arranged for us to see the
2525 real definition first, and we can just use the same value. */
2526 if (h->is_weakalias)
2528 struct elf_link_hash_entry *def = weakdef (h);
2529 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2530 h->root.u.def.section = def->root.u.def.section;
2531 h->root.u.def.value = def->root.u.def.value;
2532 if (info->nocopyreloc)
2533 h->non_got_ref = def->non_got_ref;
2534 return true;
2537 /* This is a reference to a symbol defined by a dynamic object which
2538 is not a function. */
2540 /* If we are creating a shared library, we must presume that the
2541 only references to the symbol are via the global offset table.
2542 For such cases we need not do anything here; the relocations will
2543 be handled correctly by relocate_section. */
2544 if (bfd_link_pic (info))
2545 return true;
2547 /* If there are no references to this symbol that do not use the
2548 GOT, we don't need to generate a copy reloc. */
2549 if (!h->non_got_ref)
2550 return true;
2552 /* If -z nocopyreloc was given, we won't generate them either. */
2553 if (0 && info->nocopyreloc)
2555 h->non_got_ref = 0;
2556 return true;
2559 /* If we don't find any dynamic relocs in read-only sections, then
2560 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2561 if (0 && !_bfd_elf_readonly_dynrelocs (h))
2563 h->non_got_ref = 0;
2564 return true;
2567 /* We must allocate the symbol in our .dynbss section, which will
2568 become part of the .bss section of the executable. There will be
2569 an entry for this symbol in the .dynsym section. The dynamic
2570 object will contain position independent code, so all references
2571 from the dynamic object to this symbol will go through the global
2572 offset table. The dynamic linker will use the .dynsym entry to
2573 determine the address it must put in the global offset table, so
2574 both the dynamic object and the regular object will refer to the
2575 same memory location for the variable. */
2577 s = htab->root.sdynbss;
2578 BFD_ASSERT (s != NULL);
2580 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2581 copy the initial value out of the dynamic object and into the
2582 runtime process image. We need to remember the offset into the
2583 .rela.bss section we are going to use. */
2584 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2586 asection *srel;
2588 srel = htab->root.srelbss;
2589 BFD_ASSERT (srel != NULL);
2590 srel->size += sizeof (Elf32_External_Rela);
2591 h->needs_copy = 1;
2594 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2597 /* Allocate space in .plt, .got and associated reloc sections for
2598 dynamic relocs. */
2600 static bool
2601 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2603 struct bfd_link_info *info;
2604 struct elf_sh_link_hash_table *htab;
2605 struct elf_sh_link_hash_entry *eh;
2606 struct elf_dyn_relocs *p;
2608 if (h->root.type == bfd_link_hash_indirect)
2609 return true;
2611 info = (struct bfd_link_info *) inf;
2612 htab = sh_elf_hash_table (info);
2613 if (htab == NULL)
2614 return false;
2616 eh = (struct elf_sh_link_hash_entry *) h;
2617 if ((h->got.refcount > 0
2618 || h->forced_local)
2619 && eh->gotplt_refcount > 0)
2621 /* The symbol has been forced local, or we have some direct got refs,
2622 so treat all the gotplt refs as got refs. */
2623 h->got.refcount += eh->gotplt_refcount;
2624 if (h->plt.refcount >= eh->gotplt_refcount)
2625 h->plt.refcount -= eh->gotplt_refcount;
2628 if (htab->root.dynamic_sections_created
2629 && h->plt.refcount > 0
2630 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2631 || h->root.type != bfd_link_hash_undefweak))
2633 /* Make sure this symbol is output as a dynamic symbol.
2634 Undefined weak syms won't yet be marked as dynamic. */
2635 if (h->dynindx == -1
2636 && !h->forced_local)
2638 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2639 return false;
2642 if (bfd_link_pic (info)
2643 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2645 asection *s = htab->root.splt;
2646 const struct elf_sh_plt_info *plt_info;
2648 /* If this is the first .plt entry, make room for the special
2649 first entry. */
2650 if (s->size == 0)
2651 s->size += htab->plt_info->plt0_entry_size;
2653 h->plt.offset = s->size;
2655 /* If this symbol is not defined in a regular file, and we are
2656 not generating a shared library, then set the symbol to this
2657 location in the .plt. This is required to make function
2658 pointers compare as equal between the normal executable and
2659 the shared library. Skip this for FDPIC, since the
2660 function's address will be the address of the canonical
2661 function descriptor. */
2662 if (!htab->fdpic_p && !bfd_link_pic (info) && !h->def_regular)
2664 h->root.u.def.section = s;
2665 h->root.u.def.value = h->plt.offset;
2668 /* Make room for this entry. */
2669 plt_info = htab->plt_info;
2670 if (plt_info->short_plt != NULL
2671 && (get_plt_index (plt_info->short_plt, s->size) < MAX_SHORT_PLT))
2672 plt_info = plt_info->short_plt;
2673 s->size += plt_info->symbol_entry_size;
2675 /* We also need to make an entry in the .got.plt section, which
2676 will be placed in the .got section by the linker script. */
2677 if (!htab->fdpic_p)
2678 htab->root.sgotplt->size += 4;
2679 else
2680 htab->root.sgotplt->size += 8;
2682 /* We also need to make an entry in the .rel.plt section. */
2683 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
2685 if (htab->root.target_os == is_vxworks && !bfd_link_pic (info))
2687 /* VxWorks executables have a second set of relocations
2688 for each PLT entry. They go in a separate relocation
2689 section, which is processed by the kernel loader. */
2691 /* There is a relocation for the initial PLT entry:
2692 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2693 if (h->plt.offset == htab->plt_info->plt0_entry_size)
2694 htab->srelplt2->size += sizeof (Elf32_External_Rela);
2696 /* There are two extra relocations for each subsequent
2697 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2698 and an R_SH_DIR32 relocation for the PLT entry. */
2699 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2702 else
2704 h->plt.offset = (bfd_vma) -1;
2705 h->needs_plt = 0;
2708 else
2710 h->plt.offset = (bfd_vma) -1;
2711 h->needs_plt = 0;
2714 if (h->got.refcount > 0)
2716 asection *s;
2717 bool dyn;
2718 enum got_type got_type = sh_elf_hash_entry (h)->got_type;
2720 /* Make sure this symbol is output as a dynamic symbol.
2721 Undefined weak syms won't yet be marked as dynamic. */
2722 if (h->dynindx == -1
2723 && !h->forced_local)
2725 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2726 return false;
2729 s = htab->root.sgot;
2730 h->got.offset = s->size;
2731 s->size += 4;
2732 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2733 if (got_type == GOT_TLS_GD)
2734 s->size += 4;
2735 dyn = htab->root.dynamic_sections_created;
2736 if (!dyn)
2738 /* No dynamic relocations required. */
2739 if (htab->fdpic_p && !bfd_link_pic (info)
2740 && h->root.type != bfd_link_hash_undefweak
2741 && (got_type == GOT_NORMAL || got_type == GOT_FUNCDESC))
2742 htab->srofixup->size += 4;
2744 /* No dynamic relocations required when IE->LE conversion happens. */
2745 else if (got_type == GOT_TLS_IE
2746 && !h->def_dynamic
2747 && !bfd_link_pic (info))
2749 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2750 R_SH_TLS_GD needs one if local symbol and two if global. */
2751 else if ((got_type == GOT_TLS_GD && h->dynindx == -1)
2752 || got_type == GOT_TLS_IE)
2753 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2754 else if (got_type == GOT_TLS_GD)
2755 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2756 else if (got_type == GOT_FUNCDESC)
2758 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2759 htab->srofixup->size += 4;
2760 else
2761 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2763 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2764 || h->root.type != bfd_link_hash_undefweak)
2765 && (bfd_link_pic (info)
2766 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2767 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2768 else if (htab->fdpic_p
2769 && !bfd_link_pic (info)
2770 && got_type == GOT_NORMAL
2771 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2772 || h->root.type != bfd_link_hash_undefweak))
2773 htab->srofixup->size += 4;
2775 else
2776 h->got.offset = (bfd_vma) -1;
2778 /* Allocate space for any dynamic relocations to function
2779 descriptors, canonical or otherwise. We need to relocate the
2780 reference unless it resolves to zero, which only happens for
2781 undefined weak symbols (either non-default visibility, or when
2782 static linking). Any GOT slot is accounted for elsewhere. */
2783 if (eh->abs_funcdesc_refcount > 0
2784 && (h->root.type != bfd_link_hash_undefweak
2785 || (htab->root.dynamic_sections_created
2786 && ! SYMBOL_CALLS_LOCAL (info, h))))
2788 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2789 htab->srofixup->size += eh->abs_funcdesc_refcount * 4;
2790 else
2791 htab->root.srelgot->size
2792 += eh->abs_funcdesc_refcount * sizeof (Elf32_External_Rela);
2795 /* We must allocate a function descriptor if there are references to
2796 a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and
2797 the dynamic linker isn't going to allocate it. None of this
2798 applies if we already created one in .got.plt, but if the
2799 canonical function descriptor can be in this object, there
2800 won't be a PLT entry at all. */
2801 if ((eh->funcdesc.refcount > 0
2802 || (h->got.offset != MINUS_ONE && eh->got_type == GOT_FUNCDESC))
2803 && h->root.type != bfd_link_hash_undefweak
2804 && SYMBOL_FUNCDESC_LOCAL (info, h))
2806 /* Make room for this function descriptor. */
2807 eh->funcdesc.offset = htab->sfuncdesc->size;
2808 htab->sfuncdesc->size += 8;
2810 /* We will need a relocation or two fixups to initialize the
2811 function descriptor, so allocate those too. */
2812 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
2813 htab->srofixup->size += 8;
2814 else
2815 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
2818 if (h->dyn_relocs == NULL)
2819 return true;
2821 /* In the shared -Bsymbolic case, discard space allocated for
2822 dynamic pc-relative relocs against symbols which turn out to be
2823 defined in regular objects. For the normal shared case, discard
2824 space for pc-relative relocs that have become local due to symbol
2825 visibility changes. */
2827 if (bfd_link_pic (info))
2829 if (SYMBOL_CALLS_LOCAL (info, h))
2831 struct elf_dyn_relocs **pp;
2833 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2835 p->count -= p->pc_count;
2836 p->pc_count = 0;
2837 if (p->count == 0)
2838 *pp = p->next;
2839 else
2840 pp = &p->next;
2844 if (htab->root.target_os == is_vxworks)
2846 struct elf_dyn_relocs **pp;
2848 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2850 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2851 *pp = p->next;
2852 else
2853 pp = &p->next;
2857 /* Also discard relocs on undefined weak syms with non-default
2858 visibility. */
2859 if (h->dyn_relocs != NULL
2860 && h->root.type == bfd_link_hash_undefweak)
2862 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2863 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2864 h->dyn_relocs = NULL;
2866 /* Make sure undefined weak symbols are output as a dynamic
2867 symbol in PIEs. */
2868 else if (h->dynindx == -1
2869 && !h->forced_local)
2871 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2872 return false;
2876 else
2878 /* For the non-shared case, discard space for relocs against
2879 symbols which turn out to need copy relocs or are not
2880 dynamic. */
2882 if (!h->non_got_ref
2883 && ((h->def_dynamic
2884 && !h->def_regular)
2885 || (htab->root.dynamic_sections_created
2886 && (h->root.type == bfd_link_hash_undefweak
2887 || h->root.type == bfd_link_hash_undefined))))
2889 /* Make sure this symbol is output as a dynamic symbol.
2890 Undefined weak syms won't yet be marked as dynamic. */
2891 if (h->dynindx == -1
2892 && !h->forced_local)
2894 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2895 return false;
2898 /* If that succeeded, we know we'll be keeping all the
2899 relocs. */
2900 if (h->dynindx != -1)
2901 goto keep;
2904 h->dyn_relocs = NULL;
2906 keep: ;
2909 /* Finally, allocate space. */
2910 for (p = h->dyn_relocs; p != NULL; p = p->next)
2912 asection *sreloc = elf_section_data (p->sec)->sreloc;
2913 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2915 /* If we need relocations, we do not need fixups. */
2916 if (htab->fdpic_p && !bfd_link_pic (info))
2917 htab->srofixup->size -= 4 * (p->count - p->pc_count);
2920 return true;
2923 /* This function is called after all the input files have been read,
2924 and the input sections have been assigned to output sections.
2925 It's a convenient place to determine the PLT style. */
2927 static bool
2928 sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2930 sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd,
2931 bfd_link_pic (info));
2933 if (sh_elf_hash_table (info)->fdpic_p && !bfd_link_relocatable (info)
2934 && !bfd_elf_stack_segment_size (output_bfd, info,
2935 "__stacksize", DEFAULT_STACK_SIZE))
2936 return false;
2937 return true;
2940 /* Set the sizes of the dynamic sections. */
2942 static bool
2943 sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2944 struct bfd_link_info *info)
2946 struct elf_sh_link_hash_table *htab;
2947 bfd *dynobj;
2948 asection *s;
2949 bool relocs;
2950 bfd *ibfd;
2952 htab = sh_elf_hash_table (info);
2953 if (htab == NULL)
2954 return false;
2956 dynobj = htab->root.dynobj;
2957 BFD_ASSERT (dynobj != NULL);
2959 if (htab->root.dynamic_sections_created)
2961 /* Set the contents of the .interp section to the interpreter. */
2962 if (bfd_link_executable (info) && !info->nointerp)
2964 s = bfd_get_linker_section (dynobj, ".interp");
2965 BFD_ASSERT (s != NULL);
2966 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2967 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2971 /* Set up .got offsets for local syms, and space for local dynamic
2972 relocs. */
2973 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2975 bfd_signed_vma *local_got;
2976 bfd_signed_vma *end_local_got;
2977 union gotref *local_funcdesc, *end_local_funcdesc;
2978 char *local_got_type;
2979 bfd_size_type locsymcount;
2980 Elf_Internal_Shdr *symtab_hdr;
2981 asection *srel;
2983 if (! is_sh_elf (ibfd))
2984 continue;
2986 for (s = ibfd->sections; s != NULL; s = s->next)
2988 struct elf_dyn_relocs *p;
2990 for (p = ((struct elf_dyn_relocs *)
2991 elf_section_data (s)->local_dynrel);
2992 p != NULL;
2993 p = p->next)
2995 if (! bfd_is_abs_section (p->sec)
2996 && bfd_is_abs_section (p->sec->output_section))
2998 /* Input section has been discarded, either because
2999 it is a copy of a linkonce section or due to
3000 linker script /DISCARD/, so we'll be discarding
3001 the relocs too. */
3003 else if (htab->root.target_os == is_vxworks
3004 && strcmp (p->sec->output_section->name,
3005 ".tls_vars") == 0)
3007 /* Relocations in vxworks .tls_vars sections are
3008 handled specially by the loader. */
3010 else if (p->count != 0)
3012 srel = elf_section_data (p->sec)->sreloc;
3013 srel->size += p->count * sizeof (Elf32_External_Rela);
3014 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3016 info->flags |= DF_TEXTREL;
3017 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
3018 p->sec->owner, p->sec);
3021 /* If we need relocations, we do not need fixups. */
3022 if (htab->fdpic_p && !bfd_link_pic (info))
3023 htab->srofixup->size -= 4 * (p->count - p->pc_count);
3028 symtab_hdr = &elf_symtab_hdr (ibfd);
3029 locsymcount = symtab_hdr->sh_info;
3030 s = htab->root.sgot;
3031 srel = htab->root.srelgot;
3033 local_got = elf_local_got_refcounts (ibfd);
3034 if (local_got)
3036 end_local_got = local_got + locsymcount;
3037 local_got_type = sh_elf_local_got_type (ibfd);
3038 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3039 for (; local_got < end_local_got; ++local_got)
3041 if (*local_got > 0)
3043 *local_got = s->size;
3044 s->size += 4;
3045 if (*local_got_type == GOT_TLS_GD)
3046 s->size += 4;
3047 if (bfd_link_pic (info))
3048 srel->size += sizeof (Elf32_External_Rela);
3049 else
3050 htab->srofixup->size += 4;
3052 if (*local_got_type == GOT_FUNCDESC)
3054 if (local_funcdesc == NULL)
3056 bfd_size_type size;
3058 size = locsymcount * sizeof (union gotref);
3059 local_funcdesc = (union gotref *) bfd_zalloc (ibfd,
3060 size);
3061 if (local_funcdesc == NULL)
3062 return false;
3063 sh_elf_local_funcdesc (ibfd) = local_funcdesc;
3064 local_funcdesc += (local_got
3065 - elf_local_got_refcounts (ibfd));
3067 local_funcdesc->refcount++;
3068 ++local_funcdesc;
3071 else
3072 *local_got = (bfd_vma) -1;
3073 ++local_got_type;
3077 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3078 if (local_funcdesc)
3080 end_local_funcdesc = local_funcdesc + locsymcount;
3082 for (; local_funcdesc < end_local_funcdesc; ++local_funcdesc)
3084 if (local_funcdesc->refcount > 0)
3086 local_funcdesc->offset = htab->sfuncdesc->size;
3087 htab->sfuncdesc->size += 8;
3088 if (!bfd_link_pic (info))
3089 htab->srofixup->size += 8;
3090 else
3091 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
3093 else
3094 local_funcdesc->offset = MINUS_ONE;
3100 if (htab->tls_ldm_got.refcount > 0)
3102 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3103 relocs. */
3104 htab->tls_ldm_got.offset = htab->root.sgot->size;
3105 htab->root.sgot->size += 8;
3106 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
3108 else
3109 htab->tls_ldm_got.offset = -1;
3111 /* Only the reserved entries should be present. For FDPIC, they go at
3112 the end of .got.plt. */
3113 if (htab->fdpic_p)
3115 BFD_ASSERT (htab->root.sgotplt && htab->root.sgotplt->size == 12);
3116 htab->root.sgotplt->size = 0;
3119 /* Allocate global sym .plt and .got entries, and space for global
3120 sym dynamic relocs. */
3121 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3123 /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
3124 end of the FDPIC .got.plt. */
3125 if (htab->fdpic_p)
3127 htab->root.hgot->root.u.def.value = htab->root.sgotplt->size;
3128 htab->root.sgotplt->size += 12;
3131 /* At the very end of the .rofixup section is a pointer to the GOT. */
3132 if (htab->fdpic_p && htab->srofixup != NULL)
3133 htab->srofixup->size += 4;
3135 /* We now have determined the sizes of the various dynamic sections.
3136 Allocate memory for them. */
3137 relocs = false;
3138 for (s = dynobj->sections; s != NULL; s = s->next)
3140 if ((s->flags & SEC_LINKER_CREATED) == 0)
3141 continue;
3143 if (s == htab->root.splt
3144 || s == htab->root.sgot
3145 || s == htab->root.sgotplt
3146 || s == htab->sfuncdesc
3147 || s == htab->srofixup
3148 || s == htab->root.sdynbss)
3150 /* Strip this section if we don't need it; see the
3151 comment below. */
3153 else if (startswith (bfd_section_name (s), ".rela"))
3155 if (s->size != 0 && s != htab->root.srelplt && s != htab->srelplt2)
3156 relocs = true;
3158 /* We use the reloc_count field as a counter if we need
3159 to copy relocs into the output file. */
3160 s->reloc_count = 0;
3162 else
3164 /* It's not one of our sections, so don't allocate space. */
3165 continue;
3168 if (s->size == 0)
3170 /* If we don't need this section, strip it from the
3171 output file. This is mostly to handle .rela.bss and
3172 .rela.plt. We must create both sections in
3173 create_dynamic_sections, because they must be created
3174 before the linker maps input sections to output
3175 sections. The linker does that before
3176 adjust_dynamic_symbol is called, and it is that
3177 function which decides whether anything needs to go
3178 into these sections. */
3180 s->flags |= SEC_EXCLUDE;
3181 continue;
3184 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3185 continue;
3187 /* Allocate memory for the section contents. We use bfd_zalloc
3188 here in case unused entries are not reclaimed before the
3189 section's contents are written out. This should not happen,
3190 but this way if it does, we get a R_SH_NONE reloc instead
3191 of garbage. */
3192 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3193 if (s->contents == NULL)
3194 return false;
3197 return _bfd_elf_maybe_vxworks_add_dynamic_tags (output_bfd, info,
3198 relocs);
3201 /* Add a dynamic relocation to the SRELOC section. */
3203 inline static bfd_vma
3204 sh_elf_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
3205 int reloc_type, long dynindx, bfd_vma addend)
3207 Elf_Internal_Rela outrel;
3208 bfd_vma reloc_offset;
3210 outrel.r_offset = offset;
3211 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
3212 outrel.r_addend = addend;
3214 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rela);
3215 BFD_ASSERT (reloc_offset < sreloc->size);
3216 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3217 sreloc->contents + reloc_offset);
3218 sreloc->reloc_count++;
3220 return reloc_offset;
3223 /* Add an FDPIC read-only fixup. */
3225 inline static void
3226 sh_elf_add_rofixup (bfd *output_bfd, asection *srofixup, bfd_vma offset)
3228 bfd_vma fixup_offset;
3230 fixup_offset = srofixup->reloc_count++ * 4;
3231 BFD_ASSERT (fixup_offset < srofixup->size);
3232 bfd_put_32 (output_bfd, offset, srofixup->contents + fixup_offset);
3235 /* Return the offset of the generated .got section from the
3236 _GLOBAL_OFFSET_TABLE_ symbol. */
3238 static bfd_signed_vma
3239 sh_elf_got_offset (struct elf_sh_link_hash_table *htab)
3241 return (htab->root.sgot->output_offset - htab->root.sgotplt->output_offset
3242 - htab->root.hgot->root.u.def.value);
3245 /* Find the segment number in which OSEC, and output section, is
3246 located. */
3248 static unsigned
3249 sh_elf_osec_to_segment (bfd *output_bfd, asection *osec)
3251 Elf_Internal_Phdr *p = NULL;
3253 if (output_bfd->xvec->flavour == bfd_target_elf_flavour
3254 /* PR ld/17110: Do not look for output segments in an input bfd. */
3255 && output_bfd->direction != read_direction)
3256 p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
3258 /* FIXME: Nothing ever says what this index is relative to. The kernel
3259 supplies data in terms of the number of load segments but this is
3260 a phdr index and the first phdr may not be a load segment. */
3261 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
3264 static bool
3265 sh_elf_osec_readonly_p (bfd *output_bfd, asection *osec)
3267 unsigned seg = sh_elf_osec_to_segment (output_bfd, osec);
3269 return (seg != (unsigned) -1
3270 && ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W));
3273 /* Generate the initial contents of a local function descriptor, along
3274 with any relocations or fixups required. */
3275 static bool
3276 sh_elf_initialize_funcdesc (bfd *output_bfd,
3277 struct bfd_link_info *info,
3278 struct elf_link_hash_entry *h,
3279 bfd_vma offset,
3280 asection *section,
3281 bfd_vma value)
3283 struct elf_sh_link_hash_table *htab;
3284 int dynindx;
3285 bfd_vma addr, seg;
3287 htab = sh_elf_hash_table (info);
3289 /* FIXME: The ABI says that the offset to the function goes in the
3290 descriptor, along with the segment index. We're RELA, so it could
3291 go in the reloc instead... */
3293 if (h != NULL && SYMBOL_CALLS_LOCAL (info, h))
3295 section = h->root.u.def.section;
3296 value = h->root.u.def.value;
3299 if (h == NULL || SYMBOL_CALLS_LOCAL (info, h))
3301 dynindx = elf_section_data (section->output_section)->dynindx;
3302 addr = value + section->output_offset;
3303 seg = sh_elf_osec_to_segment (output_bfd, section->output_section);
3305 else
3307 BFD_ASSERT (h->dynindx != -1);
3308 dynindx = h->dynindx;
3309 addr = seg = 0;
3312 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
3314 if (h == NULL || h->root.type != bfd_link_hash_undefweak)
3316 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3317 offset
3318 + htab->sfuncdesc->output_section->vma
3319 + htab->sfuncdesc->output_offset);
3320 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3321 offset + 4
3322 + htab->sfuncdesc->output_section->vma
3323 + htab->sfuncdesc->output_offset);
3326 /* There are no dynamic relocations so fill in the final
3327 address and gp value (barring fixups). */
3328 addr += section->output_section->vma;
3329 seg = htab->root.hgot->root.u.def.value
3330 + htab->root.hgot->root.u.def.section->output_section->vma
3331 + htab->root.hgot->root.u.def.section->output_offset;
3333 else
3334 sh_elf_add_dyn_reloc (output_bfd, htab->srelfuncdesc,
3335 offset
3336 + htab->sfuncdesc->output_section->vma
3337 + htab->sfuncdesc->output_offset,
3338 R_SH_FUNCDESC_VALUE, dynindx, 0);
3340 bfd_put_32 (output_bfd, addr, htab->sfuncdesc->contents + offset);
3341 bfd_put_32 (output_bfd, seg, htab->sfuncdesc->contents + offset + 4);
3343 return true;
3346 /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
3347 VALUE is the field's value. Return bfd_reloc_ok if successful or an error
3348 otherwise. */
3350 static bfd_reloc_status_type
3351 install_movi20_field (bfd *output_bfd, unsigned long relocation,
3352 bfd *input_bfd, asection *input_section,
3353 bfd_byte *contents, bfd_vma offset)
3355 unsigned long cur_val;
3356 bfd_byte *addr;
3357 bfd_reloc_status_type r;
3359 if (offset > bfd_get_section_limit (input_bfd, input_section))
3360 return bfd_reloc_outofrange;
3362 r = bfd_check_overflow (complain_overflow_signed, 20, 0,
3363 bfd_arch_bits_per_address (input_bfd), relocation);
3364 if (r != bfd_reloc_ok)
3365 return r;
3367 addr = contents + offset;
3368 cur_val = bfd_get_16 (output_bfd, addr);
3369 bfd_put_16 (output_bfd, cur_val | ((relocation & 0xf0000) >> 12), addr);
3370 bfd_put_16 (output_bfd, relocation & 0xffff, addr + 2);
3372 return bfd_reloc_ok;
3375 /* Relocate an SH ELF section. */
3377 static int
3378 sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3379 bfd *input_bfd, asection *input_section,
3380 bfd_byte *contents, Elf_Internal_Rela *relocs,
3381 Elf_Internal_Sym *local_syms,
3382 asection **local_sections)
3384 struct elf_sh_link_hash_table *htab;
3385 Elf_Internal_Shdr *symtab_hdr;
3386 struct elf_link_hash_entry **sym_hashes;
3387 Elf_Internal_Rela *rel, *relend;
3388 bfd_vma *local_got_offsets;
3389 asection *sgot = NULL;
3390 asection *sgotplt = NULL;
3391 asection *splt = NULL;
3392 asection *sreloc = NULL;
3393 asection *srelgot = NULL;
3394 bool is_vxworks_tls;
3395 unsigned isec_segment, got_segment, plt_segment, check_segment[2];
3396 bool fdpic_p = false;
3398 if (!is_sh_elf (input_bfd))
3400 bfd_set_error (bfd_error_wrong_format);
3401 return false;
3404 htab = sh_elf_hash_table (info);
3405 if (htab != NULL)
3407 sgot = htab->root.sgot;
3408 sgotplt = htab->root.sgotplt;
3409 srelgot = htab->root.srelgot;
3410 splt = htab->root.splt;
3411 fdpic_p = htab->fdpic_p;
3413 symtab_hdr = &elf_symtab_hdr (input_bfd);
3414 sym_hashes = elf_sym_hashes (input_bfd);
3415 local_got_offsets = elf_local_got_offsets (input_bfd);
3417 isec_segment = sh_elf_osec_to_segment (output_bfd,
3418 input_section->output_section);
3419 if (fdpic_p && sgot)
3420 got_segment = sh_elf_osec_to_segment (output_bfd,
3421 sgot->output_section);
3422 else
3423 got_segment = -1;
3424 if (fdpic_p && splt)
3425 plt_segment = sh_elf_osec_to_segment (output_bfd,
3426 splt->output_section);
3427 else
3428 plt_segment = -1;
3430 /* We have to handle relocations in vxworks .tls_vars sections
3431 specially, because the dynamic loader is 'weird'. */
3432 is_vxworks_tls = (htab && htab->root.target_os == is_vxworks && bfd_link_pic (info)
3433 && !strcmp (input_section->output_section->name,
3434 ".tls_vars"));
3436 rel = relocs;
3437 relend = relocs + input_section->reloc_count;
3438 for (; rel < relend; rel++)
3440 int r_type;
3441 reloc_howto_type *howto;
3442 unsigned long r_symndx;
3443 Elf_Internal_Sym *sym;
3444 asection *sec;
3445 struct elf_link_hash_entry *h;
3446 bfd_vma relocation;
3447 bfd_vma addend = (bfd_vma) 0;
3448 bfd_reloc_status_type r;
3449 bfd_vma off;
3450 enum got_type got_type;
3451 const char *symname = NULL;
3452 bool resolved_to_zero;
3454 r_symndx = ELF32_R_SYM (rel->r_info);
3456 r_type = ELF32_R_TYPE (rel->r_info);
3458 /* Many of the relocs are only used for relaxing, and are
3459 handled entirely by the relaxation code. */
3460 if (r_type >= (int) R_SH_GNU_VTINHERIT
3461 && r_type <= (int) R_SH_LABEL)
3462 continue;
3463 if (r_type == (int) R_SH_NONE)
3464 continue;
3466 if (r_type < 0
3467 || r_type >= R_SH_max
3468 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3469 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3470 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3471 && r_type <= (int) R_SH_LAST_INVALID_RELOC_2)
3472 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3473 && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3474 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3475 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3476 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3477 && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3478 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_6
3479 && r_type <= (int) R_SH_LAST_INVALID_RELOC_6))
3481 bfd_set_error (bfd_error_bad_value);
3482 return false;
3485 howto = get_howto_table (output_bfd) + r_type;
3487 /* For relocs that aren't partial_inplace, we get the addend from
3488 the relocation. */
3489 if (! howto->partial_inplace)
3490 addend = rel->r_addend;
3492 resolved_to_zero = false;
3493 h = NULL;
3494 sym = NULL;
3495 sec = NULL;
3496 check_segment[0] = -1;
3497 check_segment[1] = -1;
3498 if (r_symndx < symtab_hdr->sh_info)
3500 sym = local_syms + r_symndx;
3501 sec = local_sections[r_symndx];
3503 symname = bfd_elf_string_from_elf_section
3504 (input_bfd, symtab_hdr->sh_link, sym->st_name);
3505 if (symname == NULL || *symname == '\0')
3506 symname = bfd_section_name (sec);
3508 relocation = (sec->output_section->vma
3509 + sec->output_offset
3510 + sym->st_value);
3512 if (sec != NULL && discarded_section (sec))
3513 /* Handled below. */
3515 else if (bfd_link_relocatable (info))
3517 /* This is a relocatable link. We don't have to change
3518 anything, unless the reloc is against a section symbol,
3519 in which case we have to adjust according to where the
3520 section symbol winds up in the output section. */
3521 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3523 if (! howto->partial_inplace)
3525 /* For relocations with the addend in the
3526 relocation, we need just to update the addend.
3527 All real relocs are of type partial_inplace; this
3528 code is mostly for completeness. */
3529 rel->r_addend += sec->output_offset;
3531 continue;
3534 /* Relocs of type partial_inplace need to pick up the
3535 contents in the contents and add the offset resulting
3536 from the changed location of the section symbol.
3537 Using _bfd_final_link_relocate (e.g. goto
3538 final_link_relocate) here would be wrong, because
3539 relocations marked pc_relative would get the current
3540 location subtracted, and we must only do that at the
3541 final link. */
3542 r = _bfd_relocate_contents (howto, input_bfd,
3543 sec->output_offset
3544 + sym->st_value,
3545 contents + rel->r_offset);
3546 goto relocation_done;
3549 continue;
3551 else if (! howto->partial_inplace)
3553 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3554 addend = rel->r_addend;
3556 else if ((sec->flags & SEC_MERGE)
3557 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3559 asection *msec;
3561 if (howto->rightshift || howto->src_mask != 0xffffffff)
3563 _bfd_error_handler
3564 /* xgettext:c-format */
3565 (_("%pB(%pA+%#" PRIx64 "): "
3566 "%s relocation against SEC_MERGE section"),
3567 input_bfd, input_section,
3568 (uint64_t) rel->r_offset, howto->name);
3569 return false;
3572 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3573 msec = sec;
3574 addend =
3575 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3576 - relocation;
3577 addend += msec->output_section->vma + msec->output_offset;
3578 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3579 addend = 0;
3582 else
3584 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3586 relocation = 0;
3587 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3588 symname = h->root.root.string;
3589 while (h->root.type == bfd_link_hash_indirect
3590 || h->root.type == bfd_link_hash_warning)
3591 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3592 if (h->root.type == bfd_link_hash_defined
3593 || h->root.type == bfd_link_hash_defweak)
3595 bool dyn;
3597 dyn = htab ? htab->root.dynamic_sections_created : false;
3598 sec = h->root.u.def.section;
3599 /* In these cases, we don't need the relocation value.
3600 We check specially because in some obscure cases
3601 sec->output_section will be NULL. */
3602 if (r_type == R_SH_GOTPC
3603 || r_type == R_SH_GOTPC_LOW16
3604 || r_type == R_SH_GOTPC_MEDLOW16
3605 || r_type == R_SH_GOTPC_MEDHI16
3606 || r_type == R_SH_GOTPC_HI16
3607 || ((r_type == R_SH_PLT32
3608 || r_type == R_SH_PLT_LOW16
3609 || r_type == R_SH_PLT_MEDLOW16
3610 || r_type == R_SH_PLT_MEDHI16
3611 || r_type == R_SH_PLT_HI16)
3612 && h->plt.offset != (bfd_vma) -1)
3613 || ((r_type == R_SH_GOT32
3614 || r_type == R_SH_GOT20
3615 || r_type == R_SH_GOTFUNCDESC
3616 || r_type == R_SH_GOTFUNCDESC20
3617 || r_type == R_SH_GOTOFFFUNCDESC
3618 || r_type == R_SH_GOTOFFFUNCDESC20
3619 || r_type == R_SH_FUNCDESC
3620 || r_type == R_SH_GOT_LOW16
3621 || r_type == R_SH_GOT_MEDLOW16
3622 || r_type == R_SH_GOT_MEDHI16
3623 || r_type == R_SH_GOT_HI16)
3624 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3625 bfd_link_pic (info),
3627 && (! bfd_link_pic (info)
3628 || (! info->symbolic && h->dynindx != -1)
3629 || !h->def_regular))
3630 /* The cases above are those in which relocation is
3631 overwritten in the switch block below. The cases
3632 below are those in which we must defer relocation
3633 to run-time, because we can't resolve absolute
3634 addresses when creating a shared library. */
3635 || (bfd_link_pic (info)
3636 && ((! info->symbolic && h->dynindx != -1)
3637 || !h->def_regular)
3638 && ((r_type == R_SH_DIR32
3639 && !h->forced_local)
3640 || (r_type == R_SH_REL32
3641 && !SYMBOL_CALLS_LOCAL (info, h)))
3642 && ((input_section->flags & SEC_ALLOC) != 0
3643 /* DWARF will emit R_SH_DIR32 relocations in its
3644 sections against symbols defined externally
3645 in shared libraries. We can't do anything
3646 with them here. */
3647 || ((input_section->flags & SEC_DEBUGGING) != 0
3648 && h->def_dynamic)))
3649 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3650 sections because such sections are not SEC_ALLOC and
3651 thus ld.so will not process them. */
3652 || (sec->output_section == NULL
3653 && ((input_section->flags & SEC_DEBUGGING) != 0
3654 && h->def_dynamic))
3655 || (sec->output_section == NULL
3656 && (sh_elf_hash_entry (h)->got_type == GOT_TLS_IE
3657 || sh_elf_hash_entry (h)->got_type == GOT_TLS_GD)))
3659 else if (sec->output_section != NULL)
3660 relocation = (h->root.u.def.value
3661 + sec->output_section->vma
3662 + sec->output_offset);
3663 else if (!bfd_link_relocatable (info)
3664 && (_bfd_elf_section_offset (output_bfd, info,
3665 input_section,
3666 rel->r_offset)
3667 != (bfd_vma) -1))
3669 _bfd_error_handler
3670 /* xgettext:c-format */
3671 (_("%pB(%pA+%#" PRIx64 "): "
3672 "unresolvable %s relocation against symbol `%s'"),
3673 input_bfd,
3674 input_section,
3675 (uint64_t) rel->r_offset,
3676 howto->name,
3677 h->root.root.string);
3678 return false;
3681 else if (h->root.type == bfd_link_hash_undefweak)
3682 resolved_to_zero = UNDEFWEAK_NO_DYNAMIC_RELOC (info, h);
3683 else if (info->unresolved_syms_in_objects == RM_IGNORE
3684 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3686 else if (!bfd_link_relocatable (info))
3687 info->callbacks->undefined_symbol
3688 (info, h->root.root.string, input_bfd, input_section,
3689 rel->r_offset,
3690 (info->unresolved_syms_in_objects == RM_DIAGNOSE
3691 && !info->warn_unresolved_syms)
3692 || ELF_ST_VISIBILITY (h->other));
3695 if (sec != NULL && discarded_section (sec))
3696 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3697 rel, 1, relend, howto, 0, contents);
3699 if (bfd_link_relocatable (info))
3700 continue;
3702 /* Check for inter-segment relocations in FDPIC files. Most
3703 relocations connect the relocation site to the location of
3704 the target symbol, but there are some exceptions below. */
3705 check_segment[0] = isec_segment;
3706 if (sec != NULL)
3707 check_segment[1] = sh_elf_osec_to_segment (output_bfd,
3708 sec->output_section);
3709 else
3710 check_segment[1] = -1;
3712 switch ((int) r_type)
3714 final_link_relocate:
3715 /* COFF relocs don't use the addend. The addend is used for
3716 R_SH_DIR32 to be compatible with other compilers. */
3717 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3718 contents, rel->r_offset,
3719 relocation, addend);
3720 break;
3722 case R_SH_IND12W:
3723 goto final_link_relocate;
3725 case R_SH_DIR8WPN:
3726 case R_SH_DIR8WPZ:
3727 case R_SH_DIR8WPL:
3728 /* If the reloc is against the start of this section, then
3729 the assembler has already taken care of it and the reloc
3730 is here only to assist in relaxing. If the reloc is not
3731 against the start of this section, then it's against an
3732 external symbol and we must deal with it ourselves. */
3733 if (input_section->output_section->vma + input_section->output_offset
3734 != relocation)
3736 int disp = (relocation
3737 - input_section->output_section->vma
3738 - input_section->output_offset
3739 - rel->r_offset);
3740 int mask = 0;
3741 switch (r_type)
3743 case R_SH_DIR8WPN:
3744 case R_SH_DIR8WPZ: mask = 1; break;
3745 case R_SH_DIR8WPL: mask = 3; break;
3746 default: mask = 0; break;
3748 if (disp & mask)
3750 _bfd_error_handler
3751 /* xgettext:c-format */
3752 (_("%pB: %#" PRIx64 ": fatal: "
3753 "unaligned branch target for relax-support relocation"),
3754 input_section->owner,
3755 (uint64_t) rel->r_offset);
3756 bfd_set_error (bfd_error_bad_value);
3757 return false;
3759 relocation -= 4;
3760 goto final_link_relocate;
3762 r = bfd_reloc_ok;
3763 break;
3765 default:
3766 bfd_set_error (bfd_error_bad_value);
3767 return false;
3769 case R_SH_DIR16:
3770 case R_SH_DIR8:
3771 case R_SH_DIR8U:
3772 case R_SH_DIR8S:
3773 case R_SH_DIR4U:
3774 goto final_link_relocate;
3776 case R_SH_DIR8UL:
3777 case R_SH_DIR4UL:
3778 if (relocation & 3)
3780 _bfd_error_handler
3781 /* xgettext:c-format */
3782 (_("%pB: %#" PRIx64 ": fatal: "
3783 "unaligned %s relocation %#" PRIx64),
3784 input_section->owner, (uint64_t) rel->r_offset,
3785 howto->name, (uint64_t) relocation);
3786 bfd_set_error (bfd_error_bad_value);
3787 return false;
3789 goto final_link_relocate;
3791 case R_SH_DIR8UW:
3792 case R_SH_DIR8SW:
3793 case R_SH_DIR4UW:
3794 if (relocation & 1)
3796 _bfd_error_handler
3797 /* xgettext:c-format */
3798 (_("%pB: %#" PRIx64 ": fatal: "
3799 "unaligned %s relocation %#" PRIx64 ""),
3800 input_section->owner,
3801 (uint64_t) rel->r_offset, howto->name,
3802 (uint64_t) relocation);
3803 bfd_set_error (bfd_error_bad_value);
3804 return false;
3806 goto final_link_relocate;
3808 case R_SH_PSHA:
3809 if ((signed int)relocation < -32
3810 || (signed int)relocation > 32)
3812 _bfd_error_handler
3813 /* xgettext:c-format */
3814 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHA relocation %" PRId64
3815 " not in range -32..32"),
3816 input_section->owner,
3817 (uint64_t) rel->r_offset,
3818 (int64_t) relocation);
3819 bfd_set_error (bfd_error_bad_value);
3820 return false;
3822 goto final_link_relocate;
3824 case R_SH_PSHL:
3825 if ((signed int)relocation < -16
3826 || (signed int)relocation > 16)
3828 _bfd_error_handler
3829 /* xgettext:c-format */
3830 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHL relocation %" PRId64
3831 " not in range -32..32"),
3832 input_section->owner,
3833 (uint64_t) rel->r_offset,
3834 (int64_t) relocation);
3835 bfd_set_error (bfd_error_bad_value);
3836 return false;
3838 goto final_link_relocate;
3840 case R_SH_DIR32:
3841 case R_SH_REL32:
3842 if (bfd_link_pic (info)
3843 && (h == NULL
3844 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3845 && !resolved_to_zero)
3846 || h->root.type != bfd_link_hash_undefweak)
3847 && r_symndx != STN_UNDEF
3848 && (input_section->flags & SEC_ALLOC) != 0
3849 && !is_vxworks_tls
3850 && (r_type == R_SH_DIR32
3851 || !SYMBOL_CALLS_LOCAL (info, h)))
3853 Elf_Internal_Rela outrel;
3854 bfd_byte *loc;
3855 bool skip, relocate;
3857 /* When generating a shared object, these relocations
3858 are copied into the output file to be resolved at run
3859 time. */
3861 if (sreloc == NULL)
3863 sreloc = _bfd_elf_get_dynamic_reloc_section
3864 (input_bfd, input_section, /*rela?*/ true);
3865 if (sreloc == NULL)
3866 return false;
3869 skip = false;
3870 relocate = false;
3872 outrel.r_offset =
3873 _bfd_elf_section_offset (output_bfd, info, input_section,
3874 rel->r_offset);
3875 if (outrel.r_offset == (bfd_vma) -1)
3876 skip = true;
3877 else if (outrel.r_offset == (bfd_vma) -2)
3878 skip = true, relocate = true;
3879 outrel.r_offset += (input_section->output_section->vma
3880 + input_section->output_offset);
3882 if (skip)
3883 memset (&outrel, 0, sizeof outrel);
3884 else if (r_type == R_SH_REL32)
3886 BFD_ASSERT (h != NULL && h->dynindx != -1);
3887 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
3888 outrel.r_addend
3889 = (howto->partial_inplace
3890 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3891 : addend);
3893 else if (fdpic_p
3894 && (h == NULL
3895 || ((info->symbolic || h->dynindx == -1)
3896 && h->def_regular)))
3898 int dynindx;
3900 BFD_ASSERT (sec != NULL);
3901 BFD_ASSERT (sec->output_section != NULL);
3902 dynindx = elf_section_data (sec->output_section)->dynindx;
3903 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
3904 outrel.r_addend = relocation;
3905 outrel.r_addend
3906 += (howto->partial_inplace
3907 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3908 : addend);
3909 outrel.r_addend -= sec->output_section->vma;
3911 else
3913 /* h->dynindx may be -1 if this symbol was marked to
3914 become local. */
3915 if (h == NULL
3916 || ((info->symbolic || h->dynindx == -1)
3917 && h->def_regular))
3919 relocate = howto->partial_inplace;
3920 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3922 else
3924 BFD_ASSERT (h->dynindx != -1);
3925 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
3927 outrel.r_addend = relocation;
3928 outrel.r_addend
3929 += (howto->partial_inplace
3930 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3931 : addend);
3934 loc = sreloc->contents;
3935 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3936 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3938 check_segment[0] = check_segment[1] = -1;
3940 /* If this reloc is against an external symbol, we do
3941 not want to fiddle with the addend. Otherwise, we
3942 need to include the symbol value so that it becomes
3943 an addend for the dynamic reloc. */
3944 if (! relocate)
3945 continue;
3947 else if (fdpic_p && !bfd_link_pic (info)
3948 && r_type == R_SH_DIR32
3949 && (input_section->flags & SEC_ALLOC) != 0)
3951 bfd_vma offset;
3953 BFD_ASSERT (htab);
3955 if (sh_elf_osec_readonly_p (output_bfd,
3956 input_section->output_section))
3958 _bfd_error_handler
3959 /* xgettext:c-format */
3960 (_("%pB(%pA+%#" PRIx64 "): "
3961 "cannot emit fixup to `%s' in read-only section"),
3962 input_bfd,
3963 input_section,
3964 (uint64_t) rel->r_offset,
3965 symname);
3966 return false;
3969 offset = _bfd_elf_section_offset (output_bfd, info,
3970 input_section, rel->r_offset);
3971 if (offset != (bfd_vma)-1)
3972 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3973 input_section->output_section->vma
3974 + input_section->output_offset
3975 + rel->r_offset);
3977 check_segment[0] = check_segment[1] = -1;
3979 /* We don't want warnings for non-NULL tests on undefined weak
3980 symbols. */
3981 else if (r_type == R_SH_REL32
3982 && h
3983 && h->root.type == bfd_link_hash_undefweak)
3984 check_segment[0] = check_segment[1] = -1;
3985 goto final_link_relocate;
3987 case R_SH_GOTPLT32:
3988 /* Relocation is to the entry for this symbol in the
3989 procedure linkage table. */
3991 if (h == NULL
3992 || h->forced_local
3993 || ! bfd_link_pic (info)
3994 || info->symbolic
3995 || h->dynindx == -1
3996 || h->plt.offset == (bfd_vma) -1
3997 || h->got.offset != (bfd_vma) -1)
3998 goto force_got;
4000 /* Relocation is to the entry for this symbol in the global
4001 offset table extension for the procedure linkage table. */
4003 BFD_ASSERT (htab);
4004 BFD_ASSERT (sgotplt != NULL);
4005 relocation = (sgotplt->output_offset
4006 + (get_plt_index (htab->plt_info, h->plt.offset)
4007 + 3) * 4);
4009 #ifdef GOT_BIAS
4010 relocation -= GOT_BIAS;
4011 #endif
4013 goto final_link_relocate;
4015 force_got:
4016 case R_SH_GOT32:
4017 case R_SH_GOT20:
4018 /* Relocation is to the entry for this symbol in the global
4019 offset table. */
4021 BFD_ASSERT (htab);
4022 BFD_ASSERT (sgot != NULL);
4023 check_segment[0] = check_segment[1] = -1;
4025 if (h != NULL)
4027 bool dyn;
4029 off = h->got.offset;
4030 BFD_ASSERT (off != (bfd_vma) -1);
4032 dyn = htab->root.dynamic_sections_created;
4033 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4034 bfd_link_pic (info),
4036 || (bfd_link_pic (info)
4037 && SYMBOL_REFERENCES_LOCAL (info, h))
4038 || ((ELF_ST_VISIBILITY (h->other)
4039 || resolved_to_zero)
4040 && h->root.type == bfd_link_hash_undefweak))
4042 /* This is actually a static link, or it is a
4043 -Bsymbolic link and the symbol is defined
4044 locally, or the symbol was forced to be local
4045 because of a version file. We must initialize
4046 this entry in the global offset table. Since the
4047 offset must always be a multiple of 4, we use the
4048 least significant bit to record whether we have
4049 initialized it already.
4051 When doing a dynamic link, we create a .rela.got
4052 relocation entry to initialize the value. This
4053 is done in the finish_dynamic_symbol routine. */
4054 if ((off & 1) != 0)
4055 off &= ~1;
4056 else
4058 bfd_put_32 (output_bfd, relocation,
4059 sgot->contents + off);
4060 h->got.offset |= 1;
4062 /* If we initialize the GOT entry here with a valid
4063 symbol address, also add a fixup. */
4064 if (fdpic_p && !bfd_link_pic (info)
4065 && sh_elf_hash_entry (h)->got_type == GOT_NORMAL
4066 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4067 || h->root.type != bfd_link_hash_undefweak))
4068 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4069 sgot->output_section->vma
4070 + sgot->output_offset
4071 + off);
4075 relocation = sh_elf_got_offset (htab) + off;
4077 else
4079 BFD_ASSERT (local_got_offsets != NULL
4080 && local_got_offsets[r_symndx] != (bfd_vma) -1);
4082 off = local_got_offsets[r_symndx];
4084 /* The offset must always be a multiple of 4. We use
4085 the least significant bit to record whether we have
4086 already generated the necessary reloc. */
4087 if ((off & 1) != 0)
4088 off &= ~1;
4089 else
4091 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4093 if (bfd_link_pic (info))
4095 Elf_Internal_Rela outrel;
4096 bfd_byte *loc;
4098 outrel.r_offset = (sgot->output_section->vma
4099 + sgot->output_offset
4100 + off);
4101 if (fdpic_p)
4103 int dynindx
4104 = elf_section_data (sec->output_section)->dynindx;
4105 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
4106 outrel.r_addend = relocation;
4107 outrel.r_addend -= sec->output_section->vma;
4109 else
4111 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
4112 outrel.r_addend = relocation;
4114 loc = srelgot->contents;
4115 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4116 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4118 else if (fdpic_p
4119 && (sh_elf_local_got_type (input_bfd) [r_symndx]
4120 == GOT_NORMAL))
4121 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4122 sgot->output_section->vma
4123 + sgot->output_offset
4124 + off);
4126 local_got_offsets[r_symndx] |= 1;
4129 relocation = sh_elf_got_offset (htab) + off;
4132 #ifdef GOT_BIAS
4133 relocation -= GOT_BIAS;
4134 #endif
4136 if (r_type == R_SH_GOT20)
4138 r = install_movi20_field (output_bfd, relocation + addend,
4139 input_bfd, input_section, contents,
4140 rel->r_offset);
4141 break;
4143 else
4144 goto final_link_relocate;
4146 case R_SH_GOTOFF:
4147 case R_SH_GOTOFF20:
4148 /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
4149 we place at the start of the .got.plt section. This is the same
4150 as the start of the output .got section, unless there are function
4151 descriptors in front of it. */
4152 BFD_ASSERT (htab);
4153 BFD_ASSERT (sgotplt != NULL);
4154 check_segment[0] = got_segment;
4155 relocation -= sgotplt->output_section->vma + sgotplt->output_offset
4156 + htab->root.hgot->root.u.def.value;
4158 #ifdef GOT_BIAS
4159 relocation -= GOT_BIAS;
4160 #endif
4162 addend = rel->r_addend;
4164 if (r_type == R_SH_GOTOFF20)
4166 r = install_movi20_field (output_bfd, relocation + addend,
4167 input_bfd, input_section, contents,
4168 rel->r_offset);
4169 break;
4171 else
4172 goto final_link_relocate;
4174 case R_SH_GOTPC:
4175 /* Use global offset table as symbol value. */
4177 BFD_ASSERT (sgotplt != NULL);
4178 relocation = sgotplt->output_section->vma + sgotplt->output_offset;
4180 #ifdef GOT_BIAS
4181 relocation += GOT_BIAS;
4182 #endif
4184 addend = rel->r_addend;
4186 goto final_link_relocate;
4188 case R_SH_PLT32:
4189 /* Relocation is to the entry for this symbol in the
4190 procedure linkage table. */
4192 /* Resolve a PLT reloc against a local symbol directly,
4193 without using the procedure linkage table. */
4194 if (h == NULL)
4195 goto final_link_relocate;
4197 /* We don't want to warn on calls to undefined weak symbols,
4198 as calls to them must be protected by non-NULL tests
4199 anyway, and unprotected calls would invoke undefined
4200 behavior. */
4201 if (h->root.type == bfd_link_hash_undefweak)
4202 check_segment[0] = check_segment[1] = -1;
4204 if (h->forced_local)
4205 goto final_link_relocate;
4207 if (h->plt.offset == (bfd_vma) -1)
4209 /* We didn't make a PLT entry for this symbol. This
4210 happens when statically linking PIC code, or when
4211 using -Bsymbolic. */
4212 goto final_link_relocate;
4215 BFD_ASSERT (splt != NULL);
4216 check_segment[1] = plt_segment;
4217 relocation = (splt->output_section->vma
4218 + splt->output_offset
4219 + h->plt.offset);
4221 addend = rel->r_addend;
4223 goto final_link_relocate;
4225 /* Relocation is to the canonical function descriptor for this
4226 symbol, possibly via the GOT. Initialize the GOT
4227 entry and function descriptor if necessary. */
4228 case R_SH_GOTFUNCDESC:
4229 case R_SH_GOTFUNCDESC20:
4230 case R_SH_FUNCDESC:
4232 int dynindx = -1;
4233 asection *reloc_section;
4234 bfd_vma reloc_offset;
4235 int reloc_type = R_SH_FUNCDESC;
4237 BFD_ASSERT (htab);
4239 check_segment[0] = check_segment[1] = -1;
4241 /* FIXME: See what FRV does for global symbols in the
4242 executable, with --export-dynamic. Do they need ld.so
4243 to allocate official descriptors? See what this code
4244 does. */
4246 relocation = 0;
4247 addend = 0;
4249 if (r_type == R_SH_FUNCDESC)
4251 reloc_section = input_section;
4252 reloc_offset = rel->r_offset;
4254 else
4256 reloc_section = sgot;
4258 if (h != NULL)
4259 reloc_offset = h->got.offset;
4260 else
4262 BFD_ASSERT (local_got_offsets != NULL);
4263 reloc_offset = local_got_offsets[r_symndx];
4265 BFD_ASSERT (reloc_offset != MINUS_ONE);
4267 if (reloc_offset & 1)
4269 reloc_offset &= ~1;
4270 goto funcdesc_done_got;
4274 if (h && h->root.type == bfd_link_hash_undefweak
4275 && (SYMBOL_CALLS_LOCAL (info, h)
4276 || !htab->root.dynamic_sections_created))
4277 /* Undefined weak symbol which will not be dynamically
4278 resolved later; leave it at zero. */
4279 goto funcdesc_leave_zero;
4280 else if (SYMBOL_CALLS_LOCAL (info, h)
4281 && ! SYMBOL_FUNCDESC_LOCAL (info, h))
4283 /* If the symbol needs a non-local function descriptor
4284 but binds locally (i.e., its visibility is
4285 protected), emit a dynamic relocation decayed to
4286 section+offset. This is an optimization; the dynamic
4287 linker would resolve our function descriptor request
4288 to our copy of the function anyway. */
4289 dynindx = elf_section_data (h->root.u.def.section
4290 ->output_section)->dynindx;
4291 relocation += h->root.u.def.section->output_offset
4292 + h->root.u.def.value;
4294 else if (! SYMBOL_FUNCDESC_LOCAL (info, h))
4296 /* If the symbol is dynamic and there will be dynamic
4297 symbol resolution because we are or are linked with a
4298 shared library, emit a FUNCDESC relocation such that
4299 the dynamic linker will allocate the function
4300 descriptor. */
4301 BFD_ASSERT (h->dynindx != -1);
4302 dynindx = h->dynindx;
4304 else
4306 bfd_vma offset;
4308 /* Otherwise, we know we have a private function
4309 descriptor, so reference it directly. */
4310 reloc_type = R_SH_DIR32;
4311 dynindx = elf_section_data (htab->sfuncdesc
4312 ->output_section)->dynindx;
4314 if (h)
4316 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4317 BFD_ASSERT (offset != MINUS_ONE);
4318 if ((offset & 1) == 0)
4320 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4321 offset, NULL, 0))
4322 return false;
4323 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4326 else
4328 union gotref *local_funcdesc;
4330 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4331 offset = local_funcdesc[r_symndx].offset;
4332 BFD_ASSERT (offset != MINUS_ONE);
4333 if ((offset & 1) == 0)
4335 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4336 offset, sec,
4337 sym->st_value))
4338 return false;
4339 local_funcdesc[r_symndx].offset |= 1;
4343 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4346 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
4348 bfd_vma offset;
4350 if (sh_elf_osec_readonly_p (output_bfd,
4351 reloc_section->output_section))
4353 _bfd_error_handler
4354 /* xgettext:c-format */
4355 (_("%pB(%pA+%#" PRIx64 "): "
4356 "cannot emit fixup to `%s' in read-only section"),
4357 input_bfd,
4358 input_section,
4359 (uint64_t) rel->r_offset,
4360 symname);
4361 return false;
4364 offset = _bfd_elf_section_offset (output_bfd, info,
4365 reloc_section, reloc_offset);
4367 if (offset != (bfd_vma)-1)
4368 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4369 offset
4370 + reloc_section->output_section->vma
4371 + reloc_section->output_offset);
4373 else if ((reloc_section->output_section->flags
4374 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
4376 bfd_vma offset;
4378 if (sh_elf_osec_readonly_p (output_bfd,
4379 reloc_section->output_section))
4381 info->callbacks->warning
4382 (info,
4383 _("cannot emit dynamic relocations in read-only section"),
4384 symname, input_bfd, reloc_section, reloc_offset);
4385 return false;
4388 offset = _bfd_elf_section_offset (output_bfd, info,
4389 reloc_section, reloc_offset);
4391 if (offset != (bfd_vma)-1)
4392 sh_elf_add_dyn_reloc (output_bfd, srelgot,
4393 offset
4394 + reloc_section->output_section->vma
4395 + reloc_section->output_offset,
4396 reloc_type, dynindx, relocation);
4398 if (r_type == R_SH_FUNCDESC)
4400 r = bfd_reloc_ok;
4401 break;
4403 else
4405 relocation = 0;
4406 goto funcdesc_leave_zero;
4410 if (SYMBOL_FUNCDESC_LOCAL (info, h))
4411 relocation += htab->sfuncdesc->output_section->vma;
4412 funcdesc_leave_zero:
4413 if (r_type != R_SH_FUNCDESC)
4415 bfd_put_32 (output_bfd, relocation,
4416 reloc_section->contents + reloc_offset);
4417 if (h != NULL)
4418 h->got.offset |= 1;
4419 else
4420 local_got_offsets[r_symndx] |= 1;
4422 funcdesc_done_got:
4424 relocation = sh_elf_got_offset (htab) + reloc_offset;
4425 #ifdef GOT_BIAS
4426 relocation -= GOT_BIAS;
4427 #endif
4429 if (r_type == R_SH_GOTFUNCDESC20)
4431 r = install_movi20_field (output_bfd, relocation + addend,
4432 input_bfd, input_section, contents,
4433 rel->r_offset);
4434 break;
4436 else
4437 goto final_link_relocate;
4439 break;
4441 case R_SH_GOTOFFFUNCDESC:
4442 case R_SH_GOTOFFFUNCDESC20:
4443 /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
4444 executable and --export-dynamic. If such symbols get
4445 ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
4446 for them. */
4447 BFD_ASSERT (htab);
4449 check_segment[0] = check_segment[1] = -1;
4450 relocation = 0;
4451 addend = rel->r_addend;
4453 if (h && (h->root.type == bfd_link_hash_undefweak
4454 || !SYMBOL_FUNCDESC_LOCAL (info, h)))
4456 _bfd_error_handler
4457 /* xgettext:c-format */
4458 (_("%pB(%pA+%#" PRIx64 "): "
4459 "%s relocation against external symbol \"%s\""),
4460 input_bfd, input_section, (uint64_t) rel->r_offset,
4461 howto->name, h->root.root.string);
4462 return false;
4464 else
4466 bfd_vma offset;
4468 /* Otherwise, we know we have a private function
4469 descriptor, so reference it directly. */
4470 if (h)
4472 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4473 BFD_ASSERT (offset != MINUS_ONE);
4474 if ((offset & 1) == 0)
4476 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4477 offset, NULL, 0))
4478 return false;
4479 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4482 else
4484 union gotref *local_funcdesc;
4486 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4487 offset = local_funcdesc[r_symndx].offset;
4488 BFD_ASSERT (offset != MINUS_ONE);
4489 if ((offset & 1) == 0)
4491 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4492 offset, sec,
4493 sym->st_value))
4494 return false;
4495 local_funcdesc[r_symndx].offset |= 1;
4499 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4502 relocation -= (htab->root.hgot->root.u.def.value
4503 + sgotplt->output_offset);
4504 #ifdef GOT_BIAS
4505 relocation -= GOT_BIAS;
4506 #endif
4508 if (r_type == R_SH_GOTOFFFUNCDESC20)
4510 r = install_movi20_field (output_bfd, relocation + addend,
4511 input_bfd, input_section, contents,
4512 rel->r_offset);
4513 break;
4515 else
4516 goto final_link_relocate;
4518 case R_SH_LOOP_START:
4520 static bfd_vma start, end;
4522 start = (relocation + rel->r_addend
4523 - (sec->output_section->vma + sec->output_offset));
4524 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4525 rel->r_offset, sec, start, end);
4526 break;
4528 case R_SH_LOOP_END:
4529 end = (relocation + rel->r_addend
4530 - (sec->output_section->vma + sec->output_offset));
4531 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4532 rel->r_offset, sec, start, end);
4533 break;
4536 case R_SH_TLS_GD_32:
4537 case R_SH_TLS_IE_32:
4538 BFD_ASSERT (htab);
4539 check_segment[0] = check_segment[1] = -1;
4540 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4541 got_type = GOT_UNKNOWN;
4542 if (h == NULL && local_got_offsets)
4543 got_type = sh_elf_local_got_type (input_bfd) [r_symndx];
4544 else if (h != NULL)
4546 got_type = sh_elf_hash_entry (h)->got_type;
4547 if (! bfd_link_pic (info)
4548 && (h->dynindx == -1
4549 || h->def_regular))
4550 r_type = R_SH_TLS_LE_32;
4553 if (r_type == R_SH_TLS_GD_32 && got_type == GOT_TLS_IE)
4554 r_type = R_SH_TLS_IE_32;
4556 if (r_type == R_SH_TLS_LE_32)
4558 bfd_vma offset;
4559 unsigned short insn;
4561 if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4563 /* GD->LE transition:
4564 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4565 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4566 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4567 We change it into:
4568 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4569 nop; nop; ...
4570 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4572 offset = rel->r_offset;
4573 if (offset < 16)
4575 _bfd_error_handler
4576 /* xgettext:c-format */
4577 (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64),
4578 input_bfd, input_section, (uint64_t) offset);
4579 return false;
4582 /* Size of GD instructions is 16 or 18. */
4583 offset -= 16;
4584 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4585 if ((insn & 0xff00) == 0xc700)
4587 BFD_ASSERT (offset >= 2);
4588 offset -= 2;
4589 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4592 if ((insn & 0xff00) != 0xd400)
4593 _bfd_error_handler
4594 /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */
4595 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd4?\?)"),
4596 input_bfd, input_section, (uint64_t) offset, (int) insn);
4598 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4600 if ((insn & 0xff00) != 0xc700)
4601 _bfd_error_handler
4602 /* xgettext:c-format */
4603 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xc7?\?)"),
4604 input_bfd, input_section, (uint64_t) offset, (int) insn);
4606 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4607 if ((insn & 0xff00) != 0xd100)
4608 _bfd_error_handler
4609 /* xgettext:c-format */
4610 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd1?\?)"),
4611 input_bfd, input_section, (uint64_t) offset, (int) insn);
4613 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4614 if (insn != 0x310c)
4615 _bfd_error_handler
4616 /* xgettext:c-format */
4617 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x310c)"),
4618 input_bfd, input_section, (uint64_t) offset, (int) insn);
4620 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4621 if (insn != 0x410b)
4622 _bfd_error_handler
4623 /* xgettext:c-format */
4624 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x410b)"),
4625 input_bfd, input_section, (uint64_t) offset, (int) insn);
4627 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4628 if (insn != 0x34cc)
4629 _bfd_error_handler
4630 /* xgettext:c-format */
4631 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x34cc)"),
4632 input_bfd, input_section, (uint64_t) offset, (int) insn);
4634 bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4635 bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4636 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4637 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4638 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4640 else
4642 int target;
4644 /* IE->LE transition:
4645 mov.l 1f,r0;
4646 stc gbr,rN;
4647 mov.l @(r0,r12),rM;
4648 bra 2f;
4649 add ...;
4650 .align 2;
4651 1: x@GOTTPOFF;
4653 We change it into:
4654 mov.l .Ln,rM;
4655 stc gbr,rN;
4656 nop;
4657 ...;
4658 1: x@TPOFF;
4659 2:. */
4661 offset = rel->r_offset;
4662 if (offset < 16)
4664 _bfd_error_handler
4665 /* xgettext:c-format */
4666 (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64),
4667 input_bfd, input_section, (uint64_t) offset);
4668 return false;
4671 /* Size of IE instructions is 10 or 12. */
4672 offset -= 10;
4673 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4674 if ((insn & 0xf0ff) == 0x0012)
4676 BFD_ASSERT (offset >= 2);
4677 offset -= 2;
4678 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4681 if ((insn & 0xff00) != 0xd000)
4682 _bfd_error_handler
4683 /* xgettext:c-format */
4684 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd0??: mov.l)"),
4685 input_bfd, input_section, (uint64_t) offset, (int) insn);
4687 target = insn & 0x00ff;
4689 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4690 if ((insn & 0xf0ff) != 0x0012)
4691 _bfd_error_handler
4692 /* xgettext:c-format */
4693 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?12: stc)"),
4694 input_bfd, input_section, (uint64_t) (offset + 2), (int) insn);
4696 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4697 if ((insn & 0xf0ff) != 0x00ce)
4698 _bfd_error_handler
4699 /* xgettext:c-format */
4700 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?ce: mov.l)"),
4701 input_bfd, input_section, (uint64_t) (offset + 4), (int) insn);
4703 insn = 0xd000 | (insn & 0x0f00) | target;
4704 bfd_put_16 (output_bfd, insn, contents + offset + 0);
4705 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4708 bfd_put_32 (output_bfd, tpoff (info, relocation),
4709 contents + rel->r_offset);
4710 continue;
4713 if (sgot == NULL || sgotplt == NULL)
4714 abort ();
4716 if (h != NULL)
4717 off = h->got.offset;
4718 else
4720 if (local_got_offsets == NULL)
4721 abort ();
4723 off = local_got_offsets[r_symndx];
4726 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4727 if (r_type == R_SH_TLS_IE_32
4728 && ! htab->root.dynamic_sections_created)
4730 off &= ~1;
4731 bfd_put_32 (output_bfd, tpoff (info, relocation),
4732 sgot->contents + off);
4733 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4734 contents + rel->r_offset);
4735 continue;
4738 if ((off & 1) != 0)
4739 off &= ~1;
4740 else
4742 Elf_Internal_Rela outrel;
4743 bfd_byte *loc;
4744 int dr_type, indx;
4746 outrel.r_offset = (sgot->output_section->vma
4747 + sgot->output_offset + off);
4749 if (h == NULL || h->dynindx == -1)
4750 indx = 0;
4751 else
4752 indx = h->dynindx;
4754 dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4755 R_SH_TLS_TPOFF32);
4756 if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4757 outrel.r_addend = relocation - dtpoff_base (info);
4758 else
4759 outrel.r_addend = 0;
4760 outrel.r_info = ELF32_R_INFO (indx, dr_type);
4761 loc = srelgot->contents;
4762 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4763 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4765 if (r_type == R_SH_TLS_GD_32)
4767 if (indx == 0)
4769 bfd_put_32 (output_bfd,
4770 relocation - dtpoff_base (info),
4771 sgot->contents + off + 4);
4773 else
4775 outrel.r_info = ELF32_R_INFO (indx,
4776 R_SH_TLS_DTPOFF32);
4777 outrel.r_offset += 4;
4778 outrel.r_addend = 0;
4779 srelgot->reloc_count++;
4780 loc += sizeof (Elf32_External_Rela);
4781 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4785 if (h != NULL)
4786 h->got.offset |= 1;
4787 else
4788 local_got_offsets[r_symndx] |= 1;
4791 if (off >= (bfd_vma) -2)
4792 abort ();
4794 if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4795 relocation = sh_elf_got_offset (htab) + off;
4796 else
4798 bfd_vma offset;
4799 unsigned short insn;
4801 /* GD->IE transition:
4802 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4803 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4804 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4805 We change it into:
4806 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4807 nop; nop; bra 3f; nop; .align 2;
4808 1: .long x@TPOFF; 2:...; 3:. */
4810 offset = rel->r_offset;
4811 if (offset < 16)
4813 _bfd_error_handler
4814 /* xgettext:c-format */
4815 (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64),
4816 input_bfd, input_section, (uint64_t) offset);
4817 return false;
4820 /* Size of GD instructions is 16 or 18. */
4821 offset -= 16;
4822 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4823 if ((insn & 0xff00) == 0xc700)
4825 BFD_ASSERT (offset >= 2);
4826 offset -= 2;
4827 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4830 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4832 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4833 bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4835 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4836 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4837 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4838 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4839 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4840 BFD_ASSERT (insn == 0x310c);
4841 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4842 BFD_ASSERT (insn == 0x410b);
4843 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4844 BFD_ASSERT (insn == 0x34cc);
4846 bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4847 bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4848 bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4849 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4850 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4852 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4853 contents + rel->r_offset);
4855 continue;
4858 addend = rel->r_addend;
4860 goto final_link_relocate;
4862 case R_SH_TLS_LD_32:
4863 BFD_ASSERT (htab);
4864 check_segment[0] = check_segment[1] = -1;
4865 if (! bfd_link_pic (info))
4867 bfd_vma offset;
4868 unsigned short insn;
4870 /* LD->LE transition:
4871 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4872 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4873 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4874 We change it into:
4875 stc gbr,r0; nop; nop; nop;
4876 nop; nop; bra 3f; ...; 3:. */
4878 offset = rel->r_offset;
4879 if (offset < 16)
4881 _bfd_error_handler
4882 /* xgettext:c-format */
4883 (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64),
4884 input_bfd, input_section, (uint64_t) offset);
4885 return false;
4888 /* Size of LD instructions is 16 or 18. */
4889 offset -= 16;
4890 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4891 if ((insn & 0xff00) == 0xc700)
4893 BFD_ASSERT (offset >= 2);
4894 offset -= 2;
4895 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4898 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4899 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4900 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4901 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4902 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4903 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4904 BFD_ASSERT (insn == 0x310c);
4905 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4906 BFD_ASSERT (insn == 0x410b);
4907 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4908 BFD_ASSERT (insn == 0x34cc);
4910 bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
4911 bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
4912 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4913 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4914 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4915 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4917 continue;
4920 if (sgot == NULL || sgotplt == NULL)
4921 abort ();
4923 off = htab->tls_ldm_got.offset;
4924 if (off & 1)
4925 off &= ~1;
4926 else
4928 Elf_Internal_Rela outrel;
4929 bfd_byte *loc;
4931 outrel.r_offset = (sgot->output_section->vma
4932 + sgot->output_offset + off);
4933 outrel.r_addend = 0;
4934 outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
4935 loc = srelgot->contents;
4936 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4937 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4938 htab->tls_ldm_got.offset |= 1;
4941 relocation = sh_elf_got_offset (htab) + off;
4942 addend = rel->r_addend;
4944 goto final_link_relocate;
4946 case R_SH_TLS_LDO_32:
4947 check_segment[0] = check_segment[1] = -1;
4948 if (! bfd_link_pic (info))
4949 relocation = tpoff (info, relocation);
4950 else
4951 relocation -= dtpoff_base (info);
4953 addend = rel->r_addend;
4954 goto final_link_relocate;
4956 case R_SH_TLS_LE_32:
4958 int indx;
4959 Elf_Internal_Rela outrel;
4960 bfd_byte *loc;
4962 check_segment[0] = check_segment[1] = -1;
4964 if (!bfd_link_dll (info))
4966 relocation = tpoff (info, relocation);
4967 addend = rel->r_addend;
4968 goto final_link_relocate;
4971 if (sreloc == NULL)
4973 sreloc = _bfd_elf_get_dynamic_reloc_section
4974 (input_bfd, input_section, /*rela?*/ true);
4975 if (sreloc == NULL)
4976 return false;
4979 if (h == NULL || h->dynindx == -1)
4980 indx = 0;
4981 else
4982 indx = h->dynindx;
4984 outrel.r_offset = (input_section->output_section->vma
4985 + input_section->output_offset
4986 + rel->r_offset);
4987 outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
4988 if (indx == 0)
4989 outrel.r_addend = relocation - dtpoff_base (info);
4990 else
4991 outrel.r_addend = 0;
4993 loc = sreloc->contents;
4994 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4995 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4996 continue;
5000 relocation_done:
5001 if (fdpic_p && check_segment[0] != (unsigned) -1
5002 && check_segment[0] != check_segment[1])
5004 /* We don't want duplicate errors for undefined symbols. */
5005 if (!h || h->root.type != bfd_link_hash_undefined)
5007 if (bfd_link_pic (info))
5009 info->callbacks->einfo
5010 /* xgettext:c-format */
5011 (_("%X%C: relocation to \"%s\" references a different segment\n"),
5012 input_bfd, input_section, rel->r_offset, symname);
5013 return false;
5015 else
5016 info->callbacks->einfo
5017 /* xgettext:c-format */
5018 (_("%C: warning: relocation to \"%s\" references a different segment\n"),
5019 input_bfd, input_section, rel->r_offset, symname);
5022 elf_elfheader (output_bfd)->e_flags |= EF_SH_PIC;
5025 if (r != bfd_reloc_ok)
5027 switch (r)
5029 default:
5030 case bfd_reloc_outofrange:
5031 abort ();
5032 case bfd_reloc_overflow:
5034 const char *name;
5036 if (h != NULL)
5037 name = NULL;
5038 else
5040 name = (bfd_elf_string_from_elf_section
5041 (input_bfd, symtab_hdr->sh_link, sym->st_name));
5042 if (name == NULL)
5043 return false;
5044 if (*name == '\0')
5045 name = bfd_section_name (sec);
5047 (*info->callbacks->reloc_overflow)
5048 (info, (h ? &h->root : NULL), name, howto->name,
5049 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
5051 break;
5056 return true;
5059 /* This is a version of bfd_generic_get_relocated_section_contents
5060 which uses sh_elf_relocate_section. */
5062 static bfd_byte *
5063 sh_elf_get_relocated_section_contents (bfd *output_bfd,
5064 struct bfd_link_info *link_info,
5065 struct bfd_link_order *link_order,
5066 bfd_byte *data,
5067 bool relocatable,
5068 asymbol **symbols)
5070 Elf_Internal_Shdr *symtab_hdr;
5071 asection *input_section = link_order->u.indirect.section;
5072 bfd *input_bfd = input_section->owner;
5073 asection **sections = NULL;
5074 Elf_Internal_Rela *internal_relocs = NULL;
5075 Elf_Internal_Sym *isymbuf = NULL;
5077 /* We only need to handle the case of relaxing, or of having a
5078 particular set of section contents, specially. */
5079 if (relocatable
5080 || elf_section_data (input_section)->this_hdr.contents == NULL)
5081 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
5082 link_order, data,
5083 relocatable,
5084 symbols);
5086 symtab_hdr = &elf_symtab_hdr (input_bfd);
5088 bfd_byte *orig_data = data;
5089 if (data == NULL)
5091 data = bfd_malloc (input_section->size);
5092 if (data == NULL)
5093 return NULL;
5095 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
5096 (size_t) input_section->size);
5098 if ((input_section->flags & SEC_RELOC) != 0
5099 && input_section->reloc_count > 0)
5101 asection **secpp;
5102 Elf_Internal_Sym *isym, *isymend;
5103 bfd_size_type amt;
5105 internal_relocs = (_bfd_elf_link_read_relocs
5106 (input_bfd, input_section, NULL,
5107 (Elf_Internal_Rela *) NULL, false));
5108 if (internal_relocs == NULL)
5109 goto error_return;
5111 if (symtab_hdr->sh_info != 0)
5113 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5114 if (isymbuf == NULL)
5115 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
5116 symtab_hdr->sh_info, 0,
5117 NULL, NULL, NULL);
5118 if (isymbuf == NULL)
5119 goto error_return;
5122 amt = symtab_hdr->sh_info;
5123 amt *= sizeof (asection *);
5124 sections = (asection **) bfd_malloc (amt);
5125 if (sections == NULL && amt != 0)
5126 goto error_return;
5128 isymend = isymbuf + symtab_hdr->sh_info;
5129 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
5131 asection *isec;
5133 if (isym->st_shndx == SHN_UNDEF)
5134 isec = bfd_und_section_ptr;
5135 else if (isym->st_shndx == SHN_ABS)
5136 isec = bfd_abs_section_ptr;
5137 else if (isym->st_shndx == SHN_COMMON)
5138 isec = bfd_com_section_ptr;
5139 else
5140 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
5142 *secpp = isec;
5145 if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
5146 input_section, data, internal_relocs,
5147 isymbuf, sections))
5148 goto error_return;
5150 free (sections);
5151 if (symtab_hdr->contents != (unsigned char *) isymbuf)
5152 free (isymbuf);
5153 if (elf_section_data (input_section)->relocs != internal_relocs)
5154 free (internal_relocs);
5157 return data;
5159 error_return:
5160 free (sections);
5161 if (symtab_hdr->contents != (unsigned char *) isymbuf)
5162 free (isymbuf);
5163 if (elf_section_data (input_section)->relocs != internal_relocs)
5164 free (internal_relocs);
5165 if (orig_data == NULL)
5166 free (data);
5167 return NULL;
5170 /* Return the base VMA address which should be subtracted from real addresses
5171 when resolving @dtpoff relocation.
5172 This is PT_TLS segment p_vaddr. */
5174 static bfd_vma
5175 dtpoff_base (struct bfd_link_info *info)
5177 /* If tls_sec is NULL, we should have signalled an error already. */
5178 if (elf_hash_table (info)->tls_sec == NULL)
5179 return 0;
5180 return elf_hash_table (info)->tls_sec->vma;
5183 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
5185 static bfd_vma
5186 tpoff (struct bfd_link_info *info, bfd_vma address)
5188 /* If tls_sec is NULL, we should have signalled an error already. */
5189 if (elf_hash_table (info)->tls_sec == NULL)
5190 return 0;
5191 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
5192 structure which has 2 pointer fields. */
5193 return (address - elf_hash_table (info)->tls_sec->vma
5194 + align_power ((bfd_vma) 8,
5195 elf_hash_table (info)->tls_sec->alignment_power));
5198 static asection *
5199 sh_elf_gc_mark_hook (asection *sec,
5200 struct bfd_link_info *info,
5201 Elf_Internal_Rela *rel,
5202 struct elf_link_hash_entry *h,
5203 Elf_Internal_Sym *sym)
5205 if (h != NULL)
5206 switch (ELF32_R_TYPE (rel->r_info))
5208 case R_SH_GNU_VTINHERIT:
5209 case R_SH_GNU_VTENTRY:
5210 return NULL;
5213 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5216 /* Copy the extra info we tack onto an elf_link_hash_entry. */
5218 static void
5219 sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
5220 struct elf_link_hash_entry *dir,
5221 struct elf_link_hash_entry *ind)
5223 struct elf_sh_link_hash_entry *edir, *eind;
5225 edir = (struct elf_sh_link_hash_entry *) dir;
5226 eind = (struct elf_sh_link_hash_entry *) ind;
5228 edir->gotplt_refcount = eind->gotplt_refcount;
5229 eind->gotplt_refcount = 0;
5230 edir->funcdesc.refcount += eind->funcdesc.refcount;
5231 eind->funcdesc.refcount = 0;
5232 edir->abs_funcdesc_refcount += eind->abs_funcdesc_refcount;
5233 eind->abs_funcdesc_refcount = 0;
5235 if (ind->root.type == bfd_link_hash_indirect
5236 && dir->got.refcount <= 0)
5238 edir->got_type = eind->got_type;
5239 eind->got_type = GOT_UNKNOWN;
5242 if (ind->root.type != bfd_link_hash_indirect
5243 && dir->dynamic_adjusted)
5245 /* If called to transfer flags for a weakdef during processing
5246 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
5247 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
5248 if (dir->versioned != versioned_hidden)
5249 dir->ref_dynamic |= ind->ref_dynamic;
5250 dir->ref_regular |= ind->ref_regular;
5251 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
5252 dir->needs_plt |= ind->needs_plt;
5254 else
5255 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
5258 static int
5259 sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
5260 int is_local)
5262 if (bfd_link_pic (info))
5263 return r_type;
5265 switch (r_type)
5267 case R_SH_TLS_GD_32:
5268 case R_SH_TLS_IE_32:
5269 if (is_local)
5270 return R_SH_TLS_LE_32;
5271 return R_SH_TLS_IE_32;
5272 case R_SH_TLS_LD_32:
5273 return R_SH_TLS_LE_32;
5276 return r_type;
5279 /* Look through the relocs for a section during the first phase.
5280 Since we don't do .gots or .plts, we just need to consider the
5281 virtual table relocs for gc. */
5283 static bool
5284 sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
5285 const Elf_Internal_Rela *relocs)
5287 Elf_Internal_Shdr *symtab_hdr;
5288 struct elf_link_hash_entry **sym_hashes;
5289 struct elf_sh_link_hash_table *htab;
5290 const Elf_Internal_Rela *rel;
5291 const Elf_Internal_Rela *rel_end;
5292 asection *sreloc;
5293 unsigned int r_type;
5294 enum got_type got_type, old_got_type;
5296 sreloc = NULL;
5298 if (bfd_link_relocatable (info))
5299 return true;
5301 BFD_ASSERT (is_sh_elf (abfd));
5303 symtab_hdr = &elf_symtab_hdr (abfd);
5304 sym_hashes = elf_sym_hashes (abfd);
5306 htab = sh_elf_hash_table (info);
5307 if (htab == NULL)
5308 return false;
5310 rel_end = relocs + sec->reloc_count;
5311 for (rel = relocs; rel < rel_end; rel++)
5313 struct elf_link_hash_entry *h;
5314 unsigned long r_symndx;
5316 r_symndx = ELF32_R_SYM (rel->r_info);
5317 r_type = ELF32_R_TYPE (rel->r_info);
5319 if (r_symndx < symtab_hdr->sh_info)
5320 h = NULL;
5321 else
5323 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5324 while (h->root.type == bfd_link_hash_indirect
5325 || h->root.type == bfd_link_hash_warning)
5326 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5329 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
5330 if (! bfd_link_pic (info)
5331 && r_type == R_SH_TLS_IE_32
5332 && h != NULL
5333 && h->root.type != bfd_link_hash_undefined
5334 && h->root.type != bfd_link_hash_undefweak
5335 && (h->dynindx == -1
5336 || h->def_regular))
5337 r_type = R_SH_TLS_LE_32;
5339 if (htab->fdpic_p)
5340 switch (r_type)
5342 case R_SH_GOTOFFFUNCDESC:
5343 case R_SH_GOTOFFFUNCDESC20:
5344 case R_SH_FUNCDESC:
5345 case R_SH_GOTFUNCDESC:
5346 case R_SH_GOTFUNCDESC20:
5347 if (h != NULL)
5349 if (h->dynindx == -1)
5350 switch (ELF_ST_VISIBILITY (h->other))
5352 case STV_INTERNAL:
5353 case STV_HIDDEN:
5354 break;
5355 default:
5356 bfd_elf_link_record_dynamic_symbol (info, h);
5357 break;
5360 break;
5363 /* Some relocs require a global offset table. */
5364 if (htab->root.sgot == NULL)
5366 switch (r_type)
5368 case R_SH_DIR32:
5369 /* This may require an rofixup. */
5370 if (!htab->fdpic_p)
5371 break;
5372 /* Fall through. */
5373 case R_SH_GOTPLT32:
5374 case R_SH_GOT32:
5375 case R_SH_GOT20:
5376 case R_SH_GOTOFF:
5377 case R_SH_GOTOFF20:
5378 case R_SH_FUNCDESC:
5379 case R_SH_GOTFUNCDESC:
5380 case R_SH_GOTFUNCDESC20:
5381 case R_SH_GOTOFFFUNCDESC:
5382 case R_SH_GOTOFFFUNCDESC20:
5383 case R_SH_GOTPC:
5384 case R_SH_TLS_GD_32:
5385 case R_SH_TLS_LD_32:
5386 case R_SH_TLS_IE_32:
5387 if (htab->root.dynobj == NULL)
5388 htab->root.dynobj = abfd;
5389 if (!create_got_section (htab->root.dynobj, info))
5390 return false;
5391 break;
5393 default:
5394 break;
5398 switch (r_type)
5400 /* This relocation describes the C++ object vtable hierarchy.
5401 Reconstruct it for later use during GC. */
5402 case R_SH_GNU_VTINHERIT:
5403 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5404 return false;
5405 break;
5407 /* This relocation describes which C++ vtable entries are actually
5408 used. Record for later use during GC. */
5409 case R_SH_GNU_VTENTRY:
5410 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5411 return false;
5412 break;
5414 case R_SH_TLS_IE_32:
5415 if (bfd_link_pic (info))
5416 info->flags |= DF_STATIC_TLS;
5418 /* FALLTHROUGH */
5419 force_got:
5420 case R_SH_TLS_GD_32:
5421 case R_SH_GOT32:
5422 case R_SH_GOT20:
5423 case R_SH_GOTFUNCDESC:
5424 case R_SH_GOTFUNCDESC20:
5425 switch (r_type)
5427 default:
5428 got_type = GOT_NORMAL;
5429 break;
5430 case R_SH_TLS_GD_32:
5431 got_type = GOT_TLS_GD;
5432 break;
5433 case R_SH_TLS_IE_32:
5434 got_type = GOT_TLS_IE;
5435 break;
5436 case R_SH_GOTFUNCDESC:
5437 case R_SH_GOTFUNCDESC20:
5438 got_type = GOT_FUNCDESC;
5439 break;
5442 if (h != NULL)
5444 h->got.refcount += 1;
5445 old_got_type = sh_elf_hash_entry (h)->got_type;
5447 else
5449 bfd_signed_vma *local_got_refcounts;
5451 /* This is a global offset table entry for a local
5452 symbol. */
5453 local_got_refcounts = elf_local_got_refcounts (abfd);
5454 if (local_got_refcounts == NULL)
5456 bfd_size_type size;
5458 size = symtab_hdr->sh_info;
5459 size *= sizeof (bfd_signed_vma);
5460 size += symtab_hdr->sh_info;
5461 local_got_refcounts = ((bfd_signed_vma *)
5462 bfd_zalloc (abfd, size));
5463 if (local_got_refcounts == NULL)
5464 return false;
5465 elf_local_got_refcounts (abfd) = local_got_refcounts;
5466 sh_elf_local_got_type (abfd)
5467 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5469 local_got_refcounts[r_symndx] += 1;
5470 old_got_type = sh_elf_local_got_type (abfd) [r_symndx];
5473 /* If a TLS symbol is accessed using IE at least once,
5474 there is no point to use dynamic model for it. */
5475 if (old_got_type != got_type && old_got_type != GOT_UNKNOWN
5476 && (old_got_type != GOT_TLS_GD || got_type != GOT_TLS_IE))
5478 if (old_got_type == GOT_TLS_IE && got_type == GOT_TLS_GD)
5479 got_type = GOT_TLS_IE;
5480 else
5482 if ((old_got_type == GOT_FUNCDESC || got_type == GOT_FUNCDESC)
5483 && (old_got_type == GOT_NORMAL || got_type == GOT_NORMAL))
5484 _bfd_error_handler
5485 /* xgettext:c-format */
5486 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5487 abfd, h->root.root.string);
5488 else if (old_got_type == GOT_FUNCDESC
5489 || got_type == GOT_FUNCDESC)
5490 _bfd_error_handler
5491 /* xgettext:c-format */
5492 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5493 abfd, h->root.root.string);
5494 else
5495 _bfd_error_handler
5496 /* xgettext:c-format */
5497 (_("%pB: `%s' accessed both as normal and thread local symbol"),
5498 abfd, h->root.root.string);
5499 return false;
5503 if (old_got_type != got_type)
5505 if (h != NULL)
5506 sh_elf_hash_entry (h)->got_type = got_type;
5507 else
5508 sh_elf_local_got_type (abfd) [r_symndx] = got_type;
5511 break;
5513 case R_SH_TLS_LD_32:
5514 sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5515 break;
5517 case R_SH_FUNCDESC:
5518 case R_SH_GOTOFFFUNCDESC:
5519 case R_SH_GOTOFFFUNCDESC20:
5520 if (rel->r_addend)
5522 _bfd_error_handler
5523 (_("%pB: Function descriptor relocation with non-zero addend"),
5524 abfd);
5525 return false;
5528 if (h == NULL)
5530 union gotref *local_funcdesc;
5532 /* We need a function descriptor for a local symbol. */
5533 local_funcdesc = sh_elf_local_funcdesc (abfd);
5534 if (local_funcdesc == NULL)
5536 bfd_size_type size;
5538 size = symtab_hdr->sh_info * sizeof (union gotref);
5539 local_funcdesc = (union gotref *) bfd_zalloc (abfd, size);
5540 if (local_funcdesc == NULL)
5541 return false;
5542 sh_elf_local_funcdesc (abfd) = local_funcdesc;
5544 local_funcdesc[r_symndx].refcount += 1;
5546 if (r_type == R_SH_FUNCDESC)
5548 if (!bfd_link_pic (info))
5549 htab->srofixup->size += 4;
5550 else
5551 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
5554 else
5556 sh_elf_hash_entry (h)->funcdesc.refcount++;
5557 if (r_type == R_SH_FUNCDESC)
5558 sh_elf_hash_entry (h)->abs_funcdesc_refcount++;
5560 /* If there is a function descriptor reference, then
5561 there should not be any non-FDPIC references. */
5562 old_got_type = sh_elf_hash_entry (h)->got_type;
5563 if (old_got_type != GOT_FUNCDESC && old_got_type != GOT_UNKNOWN)
5565 if (old_got_type == GOT_NORMAL)
5566 _bfd_error_handler
5567 /* xgettext:c-format */
5568 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5569 abfd, h->root.root.string);
5570 else
5571 _bfd_error_handler
5572 /* xgettext:c-format */
5573 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5574 abfd, h->root.root.string);
5577 break;
5579 case R_SH_GOTPLT32:
5580 /* If this is a local symbol, we resolve it directly without
5581 creating a procedure linkage table entry. */
5583 if (h == NULL
5584 || h->forced_local
5585 || ! bfd_link_pic (info)
5586 || info->symbolic
5587 || h->dynindx == -1)
5588 goto force_got;
5590 h->needs_plt = 1;
5591 h->plt.refcount += 1;
5592 ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5594 break;
5596 case R_SH_PLT32:
5597 /* This symbol requires a procedure linkage table entry. We
5598 actually build the entry in adjust_dynamic_symbol,
5599 because this might be a case of linking PIC code which is
5600 never referenced by a dynamic object, in which case we
5601 don't need to generate a procedure linkage table entry
5602 after all. */
5604 /* If this is a local symbol, we resolve it directly without
5605 creating a procedure linkage table entry. */
5606 if (h == NULL)
5607 continue;
5609 if (h->forced_local)
5610 break;
5612 h->needs_plt = 1;
5613 h->plt.refcount += 1;
5614 break;
5616 case R_SH_DIR32:
5617 case R_SH_REL32:
5618 if (h != NULL && ! bfd_link_pic (info))
5620 h->non_got_ref = 1;
5621 h->plt.refcount += 1;
5624 /* If we are creating a shared library, and this is a reloc
5625 against a global symbol, or a non PC relative reloc
5626 against a local symbol, then we need to copy the reloc
5627 into the shared library. However, if we are linking with
5628 -Bsymbolic, we do not need to copy a reloc against a
5629 global symbol which is defined in an object we are
5630 including in the link (i.e., DEF_REGULAR is set). At
5631 this point we have not seen all the input files, so it is
5632 possible that DEF_REGULAR is not set now but will be set
5633 later (it is never cleared). We account for that
5634 possibility below by storing information in the
5635 dyn_relocs field of the hash table entry. A similar
5636 situation occurs when creating shared libraries and symbol
5637 visibility changes render the symbol local.
5639 If on the other hand, we are creating an executable, we
5640 may need to keep relocations for symbols satisfied by a
5641 dynamic library if we manage to avoid copy relocs for the
5642 symbol. */
5643 if ((bfd_link_pic (info)
5644 && (sec->flags & SEC_ALLOC) != 0
5645 && (r_type != R_SH_REL32
5646 || (h != NULL
5647 && (! info->symbolic
5648 || h->root.type == bfd_link_hash_defweak
5649 || !h->def_regular))))
5650 || (! bfd_link_pic (info)
5651 && (sec->flags & SEC_ALLOC) != 0
5652 && h != NULL
5653 && (h->root.type == bfd_link_hash_defweak
5654 || !h->def_regular)))
5656 struct elf_dyn_relocs *p;
5657 struct elf_dyn_relocs **head;
5659 if (htab->root.dynobj == NULL)
5660 htab->root.dynobj = abfd;
5662 /* When creating a shared object, we must copy these
5663 reloc types into the output file. We create a reloc
5664 section in dynobj and make room for this reloc. */
5665 if (sreloc == NULL)
5667 sreloc = _bfd_elf_make_dynamic_reloc_section
5668 (sec, htab->root.dynobj, 2, abfd, /*rela?*/ true);
5670 if (sreloc == NULL)
5671 return false;
5674 /* If this is a global symbol, we count the number of
5675 relocations we need for this symbol. */
5676 if (h != NULL)
5677 head = &h->dyn_relocs;
5678 else
5680 /* Track dynamic relocs needed for local syms too. */
5681 asection *s;
5682 void *vpp;
5683 Elf_Internal_Sym *isym;
5685 isym = bfd_sym_from_r_symndx (&htab->root.sym_cache,
5686 abfd, r_symndx);
5687 if (isym == NULL)
5688 return false;
5690 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5691 if (s == NULL)
5692 s = sec;
5694 vpp = &elf_section_data (s)->local_dynrel;
5695 head = (struct elf_dyn_relocs **) vpp;
5698 p = *head;
5699 if (p == NULL || p->sec != sec)
5701 size_t amt = sizeof (*p);
5702 p = bfd_alloc (htab->root.dynobj, amt);
5703 if (p == NULL)
5704 return false;
5705 p->next = *head;
5706 *head = p;
5707 p->sec = sec;
5708 p->count = 0;
5709 p->pc_count = 0;
5712 p->count += 1;
5713 if (r_type == R_SH_REL32)
5714 p->pc_count += 1;
5717 /* Allocate the fixup regardless of whether we need a relocation.
5718 If we end up generating the relocation, we'll unallocate the
5719 fixup. */
5720 if (htab->fdpic_p && !bfd_link_pic (info)
5721 && r_type == R_SH_DIR32
5722 && (sec->flags & SEC_ALLOC) != 0)
5723 htab->srofixup->size += 4;
5724 break;
5726 case R_SH_TLS_LE_32:
5727 if (bfd_link_dll (info))
5729 _bfd_error_handler
5730 (_("%pB: TLS local exec code cannot be linked into shared objects"),
5731 abfd);
5732 return false;
5735 break;
5737 case R_SH_TLS_LDO_32:
5738 /* Nothing to do. */
5739 break;
5741 default:
5742 break;
5746 return true;
5749 #ifndef sh_elf_set_mach_from_flags
5750 static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5752 static bool
5753 sh_elf_set_mach_from_flags (bfd *abfd)
5755 flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5757 if (flags >= ARRAY_SIZE (sh_ef_bfd_table))
5758 return false;
5760 if (sh_ef_bfd_table[flags] == 0)
5761 return false;
5763 bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5765 return true;
5769 /* Reverse table lookup for sh_ef_bfd_table[].
5770 Given a bfd MACH value from archures.c
5771 return the equivalent ELF flags from the table.
5772 Return -1 if no match is found. */
5775 sh_elf_get_flags_from_mach (unsigned long mach)
5777 int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5779 for (; i>0; i--)
5780 if (sh_ef_bfd_table[i] == mach)
5781 return i;
5783 /* shouldn't get here */
5784 BFD_FAIL();
5786 return -1;
5788 #endif /* not sh_elf_set_mach_from_flags */
5790 #ifndef sh_elf_copy_private_data
5791 /* Copy backend specific data from one object module to another */
5793 static bool
5794 sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5796 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5797 return true;
5799 if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd))
5800 return false;
5802 return sh_elf_set_mach_from_flags (obfd);
5804 #endif /* not sh_elf_copy_private_data */
5806 #ifndef sh_elf_merge_private_data
5808 /* This function returns the ELF architecture number that
5809 corresponds to the given arch_sh* flags. */
5812 sh_find_elf_flags (unsigned int arch_set)
5814 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5815 unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5817 return sh_elf_get_flags_from_mach (bfd_mach);
5820 /* Merge the architecture type of two BFD files, such that the
5821 resultant architecture supports all the features required
5822 by the two input BFDs.
5823 If the input BFDs are multually incompatible - i.e. one uses
5824 DSP while the other uses FPU - or there is no known architecture
5825 that fits the requirements then an error is emitted. */
5827 static bool
5828 sh_merge_bfd_arch (bfd *ibfd, struct bfd_link_info *info)
5830 bfd *obfd = info->output_bfd;
5831 unsigned int old_arch, new_arch, merged_arch;
5833 if (! _bfd_generic_verify_endian_match (ibfd, info))
5834 return false;
5836 old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
5837 new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));
5839 merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);
5841 if (!SH_VALID_CO_ARCH_SET (merged_arch))
5843 _bfd_error_handler
5844 /* xgettext:c-format */
5845 (_("%pB: uses %s instructions while previous modules "
5846 "use %s instructions"),
5847 ibfd,
5848 SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
5849 SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
5850 bfd_set_error (bfd_error_bad_value);
5851 return false;
5853 else if (!SH_VALID_ARCH_SET (merged_arch))
5855 _bfd_error_handler
5856 /* xgettext:c-format */
5857 (_("internal error: merge of architecture '%s' with "
5858 "architecture '%s' produced unknown architecture"),
5859 bfd_printable_name (obfd),
5860 bfd_printable_name (ibfd));
5861 bfd_set_error (bfd_error_bad_value);
5862 return false;
5865 bfd_default_set_arch_mach (obfd, bfd_arch_sh,
5866 sh_get_bfd_mach_from_arch_set (merged_arch));
5868 return true;
5871 /* This routine initialises the elf flags when required and
5872 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5874 static bool
5875 sh_elf_merge_private_data (bfd *ibfd, struct bfd_link_info *info)
5877 bfd *obfd = info->output_bfd;
5879 /* FIXME: What should be checked when linking shared libraries? */
5880 if ((ibfd->flags & DYNAMIC) != 0)
5881 return true;
5883 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5884 return true;
5886 if (! elf_flags_init (obfd))
5888 /* This happens when ld starts out with a 'blank' output file. */
5889 elf_flags_init (obfd) = true;
5890 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
5891 sh_elf_set_mach_from_flags (obfd);
5892 if (elf_elfheader (obfd)->e_flags & EF_SH_FDPIC)
5893 elf_elfheader (obfd)->e_flags &= ~EF_SH_PIC;
5896 if (! sh_merge_bfd_arch (ibfd, info))
5898 _bfd_error_handler (_("%pB: uses instructions which are incompatible "
5899 "with instructions used in previous modules"),
5900 ibfd);
5901 bfd_set_error (bfd_error_bad_value);
5902 return false;
5905 elf_elfheader (obfd)->e_flags &= ~EF_SH_MACH_MASK;
5906 elf_elfheader (obfd)->e_flags |=
5907 sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
5909 if (fdpic_object_p (ibfd) != fdpic_object_p (obfd))
5911 _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"),
5912 ibfd);
5913 bfd_set_error (bfd_error_bad_value);
5914 return false;
5917 return true;
5919 #endif /* not sh_elf_merge_private_data */
5921 /* Override the generic function because we need to store sh_elf_obj_tdata
5922 as the specific tdata. We set also the machine architecture from flags
5923 here. */
5925 static bool
5926 sh_elf_object_p (bfd *abfd)
5928 if (! sh_elf_set_mach_from_flags (abfd))
5929 return false;
5931 return (((elf_elfheader (abfd)->e_flags & EF_SH_FDPIC) != 0)
5932 == fdpic_object_p (abfd));
5935 /* Finish up dynamic symbol handling. We set the contents of various
5936 dynamic sections here. */
5938 static bool
5939 sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5940 struct elf_link_hash_entry *h,
5941 Elf_Internal_Sym *sym)
5943 struct elf_sh_link_hash_table *htab;
5945 htab = sh_elf_hash_table (info);
5946 if (htab == NULL)
5947 return false;
5949 if (h->plt.offset != (bfd_vma) -1)
5951 asection *splt;
5952 asection *sgotplt;
5953 asection *srelplt;
5955 bfd_vma plt_index;
5956 bfd_vma got_offset;
5957 Elf_Internal_Rela rel;
5958 bfd_byte *loc;
5959 const struct elf_sh_plt_info *plt_info;
5961 /* This symbol has an entry in the procedure linkage table. Set
5962 it up. */
5964 BFD_ASSERT (h->dynindx != -1);
5966 splt = htab->root.splt;
5967 sgotplt = htab->root.sgotplt;
5968 srelplt = htab->root.srelplt;
5969 BFD_ASSERT (splt != NULL && sgotplt != NULL && srelplt != NULL);
5971 /* Get the index in the procedure linkage table which
5972 corresponds to this symbol. This is the index of this symbol
5973 in all the symbols for which we are making plt entries. The
5974 first entry in the procedure linkage table is reserved. */
5975 plt_index = get_plt_index (htab->plt_info, h->plt.offset);
5977 plt_info = htab->plt_info;
5978 if (plt_info->short_plt != NULL && plt_index <= MAX_SHORT_PLT)
5979 plt_info = plt_info->short_plt;
5981 /* Get the offset into the .got table of the entry that
5982 corresponds to this function. */
5983 if (htab->fdpic_p)
5984 /* The offset must be relative to the GOT symbol, twelve bytes
5985 before the end of .got.plt. Each descriptor is eight
5986 bytes. */
5987 got_offset = plt_index * 8 + 12 - sgotplt->size;
5988 else
5989 /* Each .got entry is 4 bytes. The first three are
5990 reserved. */
5991 got_offset = (plt_index + 3) * 4;
5993 #ifdef GOT_BIAS
5994 if (bfd_link_pic (info))
5995 got_offset -= GOT_BIAS;
5996 #endif
5998 /* Fill in the entry in the procedure linkage table. */
5999 memcpy (splt->contents + h->plt.offset,
6000 plt_info->symbol_entry,
6001 plt_info->symbol_entry_size);
6003 if (bfd_link_pic (info) || htab->fdpic_p)
6005 if (plt_info->symbol_fields.got20)
6007 bfd_reloc_status_type r;
6008 r = install_movi20_field (output_bfd, got_offset,
6009 splt->owner, splt, splt->contents,
6010 h->plt.offset
6011 + plt_info->symbol_fields.got_entry);
6012 BFD_ASSERT (r == bfd_reloc_ok);
6014 else
6015 install_plt_field (output_bfd, false, got_offset,
6016 (splt->contents
6017 + h->plt.offset
6018 + plt_info->symbol_fields.got_entry));
6020 else
6022 BFD_ASSERT (!plt_info->symbol_fields.got20);
6024 install_plt_field (output_bfd, false,
6025 (sgotplt->output_section->vma
6026 + sgotplt->output_offset
6027 + got_offset),
6028 (splt->contents
6029 + h->plt.offset
6030 + plt_info->symbol_fields.got_entry));
6031 if (htab->root.target_os == is_vxworks)
6033 unsigned int reachable_plts, plts_per_4k;
6034 int distance;
6036 /* Divide the PLT into groups. The first group contains
6037 REACHABLE_PLTS entries and the other groups contain
6038 PLTS_PER_4K entries. Entries in the first group can
6039 branch directly to .plt; those in later groups branch
6040 to the last element of the previous group. */
6041 /* ??? It would be better to create multiple copies of
6042 the common resolver stub. */
6043 reachable_plts = ((4096
6044 - plt_info->plt0_entry_size
6045 - (plt_info->symbol_fields.plt + 4))
6046 / plt_info->symbol_entry_size) + 1;
6047 plts_per_4k = (4096 / plt_info->symbol_entry_size);
6048 if (plt_index < reachable_plts)
6049 distance = -(h->plt.offset
6050 + plt_info->symbol_fields.plt);
6051 else
6052 distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
6053 * plt_info->symbol_entry_size);
6055 /* Install the 'bra' with this offset. */
6056 bfd_put_16 (output_bfd,
6057 0xa000 | (0x0fff & ((distance - 4) / 2)),
6058 (splt->contents
6059 + h->plt.offset
6060 + plt_info->symbol_fields.plt));
6062 else
6063 install_plt_field (output_bfd, true,
6064 splt->output_section->vma + splt->output_offset,
6065 (splt->contents
6066 + h->plt.offset
6067 + plt_info->symbol_fields.plt));
6070 /* Make got_offset relative to the start of .got.plt. */
6071 #ifdef GOT_BIAS
6072 if (bfd_link_pic (info))
6073 got_offset += GOT_BIAS;
6074 #endif
6075 if (htab->fdpic_p)
6076 got_offset = plt_index * 8;
6078 if (plt_info->symbol_fields.reloc_offset != MINUS_ONE)
6079 install_plt_field (output_bfd, false,
6080 plt_index * sizeof (Elf32_External_Rela),
6081 (splt->contents
6082 + h->plt.offset
6083 + plt_info->symbol_fields.reloc_offset));
6085 /* Fill in the entry in the global offset table. */
6086 bfd_put_32 (output_bfd,
6087 (splt->output_section->vma
6088 + splt->output_offset
6089 + h->plt.offset
6090 + plt_info->symbol_resolve_offset),
6091 sgotplt->contents + got_offset);
6092 if (htab->fdpic_p)
6093 bfd_put_32 (output_bfd,
6094 sh_elf_osec_to_segment (output_bfd, splt->output_section),
6095 sgotplt->contents + got_offset + 4);
6097 /* Fill in the entry in the .rela.plt section. */
6098 rel.r_offset = (sgotplt->output_section->vma
6099 + sgotplt->output_offset
6100 + got_offset);
6101 if (htab->fdpic_p)
6102 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_FUNCDESC_VALUE);
6103 else
6104 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
6105 rel.r_addend = 0;
6106 #ifdef GOT_BIAS
6107 rel.r_addend = GOT_BIAS;
6108 #endif
6109 loc = srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
6110 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6112 if (htab->root.target_os == is_vxworks && !bfd_link_pic (info))
6114 /* Create the .rela.plt.unloaded relocations for this PLT entry.
6115 Begin by pointing LOC to the first such relocation. */
6116 loc = (htab->srelplt2->contents
6117 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
6119 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
6120 for the PLT entry's pointer to the .got.plt entry. */
6121 rel.r_offset = (splt->output_section->vma
6122 + splt->output_offset
6123 + h->plt.offset
6124 + plt_info->symbol_fields.got_entry);
6125 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6126 rel.r_addend = got_offset;
6127 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6128 loc += sizeof (Elf32_External_Rela);
6130 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
6131 the .got.plt entry, which initially points to .plt. */
6132 rel.r_offset = (sgotplt->output_section->vma
6133 + sgotplt->output_offset
6134 + got_offset);
6135 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
6136 rel.r_addend = 0;
6137 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6140 if (!h->def_regular)
6142 /* Mark the symbol as undefined, rather than as defined in
6143 the .plt section. Leave the value alone. */
6144 sym->st_shndx = SHN_UNDEF;
6148 if (h->got.offset != (bfd_vma) -1
6149 && sh_elf_hash_entry (h)->got_type != GOT_TLS_GD
6150 && sh_elf_hash_entry (h)->got_type != GOT_TLS_IE
6151 && sh_elf_hash_entry (h)->got_type != GOT_FUNCDESC)
6153 asection *sgot;
6154 asection *srelgot;
6155 Elf_Internal_Rela rel;
6156 bfd_byte *loc;
6158 /* This symbol has an entry in the global offset table. Set it
6159 up. */
6161 sgot = htab->root.sgot;
6162 srelgot = htab->root.srelgot;
6163 BFD_ASSERT (sgot != NULL && srelgot != NULL);
6165 rel.r_offset = (sgot->output_section->vma
6166 + sgot->output_offset
6167 + (h->got.offset &~ (bfd_vma) 1));
6169 /* If this is a static link, or it is a -Bsymbolic link and the
6170 symbol is defined locally or was forced to be local because
6171 of a version file, we just want to emit a RELATIVE reloc.
6172 The entry in the global offset table will already have been
6173 initialized in the relocate_section function. */
6174 if (bfd_link_pic (info)
6175 && SYMBOL_REFERENCES_LOCAL (info, h))
6177 if (htab->fdpic_p)
6179 asection *sec = h->root.u.def.section;
6180 int dynindx
6181 = elf_section_data (sec->output_section)->dynindx;
6183 rel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
6184 rel.r_addend = (h->root.u.def.value
6185 + h->root.u.def.section->output_offset);
6187 else
6189 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
6190 rel.r_addend = (h->root.u.def.value
6191 + h->root.u.def.section->output_section->vma
6192 + h->root.u.def.section->output_offset);
6195 else
6197 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
6198 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
6199 rel.r_addend = 0;
6202 loc = srelgot->contents;
6203 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
6204 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6207 if (h->needs_copy)
6209 asection *s;
6210 Elf_Internal_Rela rel;
6211 bfd_byte *loc;
6213 /* This symbol needs a copy reloc. Set it up. */
6215 BFD_ASSERT (h->dynindx != -1
6216 && (h->root.type == bfd_link_hash_defined
6217 || h->root.type == bfd_link_hash_defweak));
6219 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
6220 BFD_ASSERT (s != NULL);
6222 rel.r_offset = (h->root.u.def.value
6223 + h->root.u.def.section->output_section->vma
6224 + h->root.u.def.section->output_offset);
6225 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
6226 rel.r_addend = 0;
6227 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6228 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6231 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
6232 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
6233 ".got" section. */
6234 if (h == htab->root.hdynamic
6235 || (htab->root.target_os != is_vxworks && h == htab->root.hgot))
6236 sym->st_shndx = SHN_ABS;
6238 return true;
6241 /* Finish up the dynamic sections. */
6243 static bool
6244 sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
6246 struct elf_sh_link_hash_table *htab;
6247 asection *sgotplt;
6248 asection *sdyn;
6250 htab = sh_elf_hash_table (info);
6251 if (htab == NULL)
6252 return false;
6254 sgotplt = htab->root.sgotplt;
6255 sdyn = bfd_get_linker_section (htab->root.dynobj, ".dynamic");
6257 if (htab->root.dynamic_sections_created)
6259 asection *splt;
6260 Elf32_External_Dyn *dyncon, *dynconend;
6262 BFD_ASSERT (sgotplt != NULL && sdyn != NULL);
6264 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6265 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6266 for (; dyncon < dynconend; dyncon++)
6268 Elf_Internal_Dyn dyn;
6269 asection *s;
6271 bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
6273 switch (dyn.d_tag)
6275 default:
6276 if (htab->root.target_os == is_vxworks
6277 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
6278 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6279 break;
6281 case DT_PLTGOT:
6282 BFD_ASSERT (htab->root.hgot != NULL);
6283 s = htab->root.hgot->root.u.def.section;
6284 dyn.d_un.d_ptr = htab->root.hgot->root.u.def.value
6285 + s->output_section->vma + s->output_offset;
6286 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6287 break;
6289 case DT_JMPREL:
6290 s = htab->root.srelplt->output_section;
6291 BFD_ASSERT (s != NULL);
6292 dyn.d_un.d_ptr = s->vma;
6293 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6294 break;
6296 case DT_PLTRELSZ:
6297 s = htab->root.srelplt->output_section;
6298 BFD_ASSERT (s != NULL);
6299 dyn.d_un.d_val = s->size;
6300 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6301 break;
6305 /* Fill in the first entry in the procedure linkage table. */
6306 splt = htab->root.splt;
6307 if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
6309 unsigned int i;
6311 memcpy (splt->contents,
6312 htab->plt_info->plt0_entry,
6313 htab->plt_info->plt0_entry_size);
6314 for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
6315 if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
6316 install_plt_field (output_bfd, false,
6317 (sgotplt->output_section->vma
6318 + sgotplt->output_offset
6319 + (i * 4)),
6320 (splt->contents
6321 + htab->plt_info->plt0_got_fields[i]));
6323 if (htab->root.target_os == is_vxworks)
6325 /* Finalize the .rela.plt.unloaded contents. */
6326 Elf_Internal_Rela rel;
6327 bfd_byte *loc;
6329 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
6330 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
6331 loc = htab->srelplt2->contents;
6332 rel.r_offset = (splt->output_section->vma
6333 + splt->output_offset
6334 + htab->plt_info->plt0_got_fields[2]);
6335 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6336 rel.r_addend = 8;
6337 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6338 loc += sizeof (Elf32_External_Rela);
6340 /* Fix up the remaining .rela.plt.unloaded relocations.
6341 They may have the wrong symbol index for _G_O_T_ or
6342 _P_L_T_ depending on the order in which symbols were
6343 output. */
6344 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
6346 /* The PLT entry's pointer to the .got.plt slot. */
6347 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6348 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
6349 R_SH_DIR32);
6350 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6351 loc += sizeof (Elf32_External_Rela);
6353 /* The .got.plt slot's pointer to .plt. */
6354 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6355 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
6356 R_SH_DIR32);
6357 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6358 loc += sizeof (Elf32_External_Rela);
6362 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6363 really seem like the right value. */
6364 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
6368 /* Fill in the first three entries in the global offset table. */
6369 if (sgotplt && sgotplt->size > 0 && !htab->fdpic_p)
6371 if (sdyn == NULL)
6372 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents);
6373 else
6374 bfd_put_32 (output_bfd,
6375 sdyn->output_section->vma + sdyn->output_offset,
6376 sgotplt->contents);
6377 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4);
6378 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8);
6381 if (sgotplt && sgotplt->size > 0)
6382 elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4;
6384 /* At the very end of the .rofixup section is a pointer to the GOT. */
6385 if (htab->fdpic_p && htab->srofixup != NULL)
6387 struct elf_link_hash_entry *hgot = htab->root.hgot;
6388 bfd_vma got_value = hgot->root.u.def.value
6389 + hgot->root.u.def.section->output_section->vma
6390 + hgot->root.u.def.section->output_offset;
6392 sh_elf_add_rofixup (output_bfd, htab->srofixup, got_value);
6394 /* Make sure we allocated and generated the same number of fixups. */
6395 BFD_ASSERT (htab->srofixup->reloc_count * 4 == htab->srofixup->size);
6398 if (htab->srelfuncdesc)
6399 BFD_ASSERT (htab->srelfuncdesc->reloc_count * sizeof (Elf32_External_Rela)
6400 == htab->srelfuncdesc->size);
6402 if (htab->root.srelgot)
6403 BFD_ASSERT (htab->root.srelgot->reloc_count * sizeof (Elf32_External_Rela)
6404 == htab->root.srelgot->size);
6406 return true;
6409 static enum elf_reloc_type_class
6410 sh_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
6411 const asection *rel_sec ATTRIBUTE_UNUSED,
6412 const Elf_Internal_Rela *rela)
6414 switch ((int) ELF32_R_TYPE (rela->r_info))
6416 case R_SH_RELATIVE:
6417 return reloc_class_relative;
6418 case R_SH_JMP_SLOT:
6419 return reloc_class_plt;
6420 case R_SH_COPY:
6421 return reloc_class_copy;
6422 default:
6423 return reloc_class_normal;
6427 #if !defined SH_TARGET_ALREADY_DEFINED
6428 /* Support for Linux core dump NOTE sections. */
6430 static bool
6431 elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
6433 int offset;
6434 unsigned int size;
6436 switch (note->descsz)
6438 default:
6439 return false;
6441 case 168: /* Linux/SH */
6442 /* pr_cursig */
6443 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
6445 /* pr_pid */
6446 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
6448 /* pr_reg */
6449 offset = 72;
6450 size = 92;
6452 break;
6455 /* Make a ".reg/999" section. */
6456 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
6457 size, note->descpos + offset);
6460 static bool
6461 elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
6463 switch (note->descsz)
6465 default:
6466 return false;
6468 case 124: /* Linux/SH elf_prpsinfo */
6469 elf_tdata (abfd)->core->program
6470 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
6471 elf_tdata (abfd)->core->command
6472 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
6475 /* Note that for some reason, a spurious space is tacked
6476 onto the end of the args in some (at least one anyway)
6477 implementations, so strip it off if it exists. */
6480 char *command = elf_tdata (abfd)->core->command;
6481 int n = strlen (command);
6483 if (0 < n && command[n - 1] == ' ')
6484 command[n - 1] = '\0';
6487 return true;
6489 #endif /* not SH_TARGET_ALREADY_DEFINED */
6492 /* Return address for Ith PLT stub in section PLT, for relocation REL
6493 or (bfd_vma) -1 if it should not be included. */
6495 static bfd_vma
6496 sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6497 const arelent *rel ATTRIBUTE_UNUSED)
6499 const struct elf_sh_plt_info *plt_info;
6501 plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6502 return plt->vma + get_plt_offset (plt_info, i);
6505 /* Decide whether to attempt to turn absptr or lsda encodings in
6506 shared libraries into pcrel within the given input section. */
6508 static bool
6509 sh_elf_use_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED,
6510 struct bfd_link_info *info,
6511 asection *eh_frame_section ATTRIBUTE_UNUSED)
6513 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6515 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
6516 if (htab->fdpic_p)
6517 return false;
6519 return true;
6522 /* Adjust the contents of an eh_frame_hdr section before they're output. */
6524 static bfd_byte
6525 sh_elf_encode_eh_address (bfd *abfd,
6526 struct bfd_link_info *info,
6527 asection *osec, bfd_vma offset,
6528 asection *loc_sec, bfd_vma loc_offset,
6529 bfd_vma *encoded)
6531 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6532 struct elf_link_hash_entry *h;
6534 if (!htab->fdpic_p)
6535 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, loc_sec,
6536 loc_offset, encoded);
6538 h = htab->root.hgot;
6539 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
6541 if (! h || (sh_elf_osec_to_segment (abfd, osec)
6542 == sh_elf_osec_to_segment (abfd, loc_sec->output_section)))
6543 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
6544 loc_sec, loc_offset, encoded);
6546 BFD_ASSERT (sh_elf_osec_to_segment (abfd, osec)
6547 == (sh_elf_osec_to_segment
6548 (abfd, h->root.u.def.section->output_section)));
6550 *encoded = osec->vma + offset
6551 - (h->root.u.def.value
6552 + h->root.u.def.section->output_section->vma
6553 + h->root.u.def.section->output_offset);
6555 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
6558 #if !defined SH_TARGET_ALREADY_DEFINED
6559 #define TARGET_BIG_SYM sh_elf32_vec
6560 #define TARGET_BIG_NAME "elf32-sh"
6561 #define TARGET_LITTLE_SYM sh_elf32_le_vec
6562 #define TARGET_LITTLE_NAME "elf32-shl"
6563 #endif
6565 #define ELF_ARCH bfd_arch_sh
6566 #define ELF_TARGET_ID SH_ELF_DATA
6567 #define ELF_MACHINE_CODE EM_SH
6568 #ifdef __QNXTARGET__
6569 #define ELF_MAXPAGESIZE 0x1000
6570 #else
6571 #define ELF_MAXPAGESIZE 0x80
6572 #endif
6574 #define elf_symbol_leading_char '_'
6576 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6577 #define bfd_elf32_bfd_reloc_name_lookup \
6578 sh_elf_reloc_name_lookup
6579 #define elf_info_to_howto sh_elf_info_to_howto
6580 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6581 #define elf_backend_relocate_section sh_elf_relocate_section
6582 #define bfd_elf32_bfd_get_relocated_section_contents \
6583 sh_elf_get_relocated_section_contents
6584 #define bfd_elf32_mkobject sh_elf_mkobject
6585 #define elf_backend_object_p sh_elf_object_p
6586 #define bfd_elf32_bfd_copy_private_bfd_data \
6587 sh_elf_copy_private_data
6588 #define bfd_elf32_bfd_merge_private_bfd_data \
6589 sh_elf_merge_private_data
6591 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6592 #define elf_backend_check_relocs sh_elf_check_relocs
6593 #define elf_backend_copy_indirect_symbol \
6594 sh_elf_copy_indirect_symbol
6595 #define elf_backend_create_dynamic_sections \
6596 sh_elf_create_dynamic_sections
6597 #define bfd_elf32_bfd_link_hash_table_create \
6598 sh_elf_link_hash_table_create
6599 #define elf_backend_adjust_dynamic_symbol \
6600 sh_elf_adjust_dynamic_symbol
6601 #define elf_backend_always_size_sections \
6602 sh_elf_always_size_sections
6603 #define elf_backend_size_dynamic_sections \
6604 sh_elf_size_dynamic_sections
6605 #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
6606 #define elf_backend_finish_dynamic_symbol \
6607 sh_elf_finish_dynamic_symbol
6608 #define elf_backend_finish_dynamic_sections \
6609 sh_elf_finish_dynamic_sections
6610 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6611 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6612 #define elf_backend_can_make_relative_eh_frame \
6613 sh_elf_use_relative_eh_frame
6614 #define elf_backend_can_make_lsda_relative_eh_frame \
6615 sh_elf_use_relative_eh_frame
6616 #define elf_backend_encode_eh_address \
6617 sh_elf_encode_eh_address
6619 #define elf_backend_stack_align 8
6620 #define elf_backend_can_gc_sections 1
6621 #define elf_backend_can_refcount 1
6622 #define elf_backend_want_got_plt 1
6623 #define elf_backend_plt_readonly 1
6624 #define elf_backend_want_plt_sym 0
6625 #define elf_backend_got_header_size 12
6626 #define elf_backend_dtrel_excludes_plt 1
6628 #define elf_backend_linux_prpsinfo32_ugid16 true
6630 #if !defined SH_TARGET_ALREADY_DEFINED
6632 #include "elf32-target.h"
6634 /* NetBSD support. */
6635 #undef TARGET_BIG_SYM
6636 #define TARGET_BIG_SYM sh_elf32_nbsd_vec
6637 #undef TARGET_BIG_NAME
6638 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6639 #undef TARGET_LITTLE_SYM
6640 #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
6641 #undef TARGET_LITTLE_NAME
6642 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6643 #undef ELF_MAXPAGESIZE
6644 #define ELF_MAXPAGESIZE 0x10000
6645 #undef ELF_COMMONPAGESIZE
6646 #undef elf_symbol_leading_char
6647 #define elf_symbol_leading_char 0
6648 #undef elf32_bed
6649 #define elf32_bed elf32_sh_nbsd_bed
6651 #include "elf32-target.h"
6654 /* Linux support. */
6655 #undef TARGET_BIG_SYM
6656 #define TARGET_BIG_SYM sh_elf32_linux_be_vec
6657 #undef TARGET_BIG_NAME
6658 #define TARGET_BIG_NAME "elf32-shbig-linux"
6659 #undef TARGET_LITTLE_SYM
6660 #define TARGET_LITTLE_SYM sh_elf32_linux_vec
6661 #undef TARGET_LITTLE_NAME
6662 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6663 #undef ELF_COMMONPAGESIZE
6664 #define ELF_COMMONPAGESIZE 0x1000
6666 #undef elf_backend_grok_prstatus
6667 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6668 #undef elf_backend_grok_psinfo
6669 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6670 #undef elf32_bed
6671 #define elf32_bed elf32_sh_lin_bed
6673 #include "elf32-target.h"
6676 /* FDPIC support. */
6677 #undef TARGET_BIG_SYM
6678 #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
6679 #undef TARGET_BIG_NAME
6680 #define TARGET_BIG_NAME "elf32-shbig-fdpic"
6681 #undef TARGET_LITTLE_SYM
6682 #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
6683 #undef TARGET_LITTLE_NAME
6684 #define TARGET_LITTLE_NAME "elf32-sh-fdpic"
6686 #undef elf32_bed
6687 #define elf32_bed elf32_sh_fd_bed
6689 #include "elf32-target.h"
6691 /* VxWorks support. */
6692 #undef TARGET_BIG_SYM
6693 #define TARGET_BIG_SYM sh_elf32_vxworks_vec
6694 #undef TARGET_BIG_NAME
6695 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6696 #undef TARGET_LITTLE_SYM
6697 #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
6698 #undef TARGET_LITTLE_NAME
6699 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6700 #undef elf32_bed
6701 #define elf32_bed elf32_sh_vxworks_bed
6703 #undef elf_backend_want_plt_sym
6704 #define elf_backend_want_plt_sym 1
6705 #undef elf_symbol_leading_char
6706 #define elf_symbol_leading_char '_'
6707 #define elf_backend_want_got_underscore 1
6708 #undef elf_backend_grok_prstatus
6709 #undef elf_backend_grok_psinfo
6710 #undef elf_backend_add_symbol_hook
6711 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6712 #undef elf_backend_link_output_symbol_hook
6713 #define elf_backend_link_output_symbol_hook \
6714 elf_vxworks_link_output_symbol_hook
6715 #undef elf_backend_emit_relocs
6716 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6717 #undef elf_backend_final_write_processing
6718 #define elf_backend_final_write_processing \
6719 elf_vxworks_final_write_processing
6720 #undef ELF_MAXPAGESIZE
6721 #define ELF_MAXPAGESIZE 0x1000
6722 #undef ELF_COMMONPAGESIZE
6724 #undef ELF_TARGET_OS
6725 #define ELF_TARGET_OS is_vxworks
6727 #include "elf32-target.h"
6729 #endif /* not SH_TARGET_ALREADY_DEFINED */