Update NEWS post GDB 9 branch creation.
[binutils-gdb.git] / bfd / elf32-sh.c
blobbe4256c585c1ffa2d9911d34b0ca93dc72441ff6
1 /* Renesas / SuperH SH specific support for 32-bit ELF
2 Copyright (C) 1996-2019 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 bfd_boolean sh_elf_relax_delete_bytes
41 (bfd *, asection *, bfd_vma, int);
42 static bfd_boolean sh_elf_align_loads
43 (bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_boolean *);
44 static bfd_boolean sh_elf_swap_insns
45 (bfd *, asection *, void *, bfd_byte *, bfd_vma);
46 static int sh_elf_optimized_tls_reloc
47 (struct bfd_link_info *, int, int);
48 static bfd_vma dtpoff_base
49 (struct bfd_link_info *);
50 static bfd_vma tpoff
51 (struct bfd_link_info *, bfd_vma);
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 bfd_boolean
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 bfd_boolean
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 if (contents != NULL)
171 free (contents);
172 return bfd_reloc_outofrange;
176 #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800)
177 start_ptr = contents + start;
178 for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;)
180 for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);)
181 ptr -= 2;
182 ptr += 2;
183 diff = (last_ptr - ptr) >> 1;
184 cum_diff += diff & 1;
185 cum_diff += diff;
187 /* Calculate the start / end values to load into rs / re minus four -
188 so that will cancel out the four we would otherwise have to add to
189 addr to get the value to subtract in order to get relative addressing. */
190 if (cum_diff >= 0)
192 start -= 4;
193 end = (ptr + cum_diff * 2) - contents;
195 else
197 bfd_vma start0 = start - 4;
199 while (start0 && IS_PPI (contents + start0))
200 start0 -= 2;
201 start0 = start - 2 - ((start - start0) & 2);
202 start = start0 - cum_diff - 2;
203 end = start0;
206 if (contents != NULL
207 && elf_section_data (symbol_section)->this_hdr.contents != contents)
208 free (contents);
210 insn = bfd_get_16 (input_bfd, contents + addr);
212 x = (insn & 0x200 ? end : start) - addr;
213 if (input_section != symbol_section)
214 x += ((symbol_section->output_section->vma + symbol_section->output_offset)
215 - (input_section->output_section->vma
216 + input_section->output_offset));
217 x >>= 1;
218 if (x < -128 || x > 127)
219 return bfd_reloc_overflow;
221 x = (insn & ~0xff) | (x & 0xff);
222 bfd_put_16 (input_bfd, (bfd_vma) x, contents + addr);
224 return bfd_reloc_ok;
227 /* This function is used for normal relocs. This used to be like the COFF
228 function, and is almost certainly incorrect for other ELF targets. */
230 static bfd_reloc_status_type
231 sh_elf_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in,
232 void *data, asection *input_section, bfd *output_bfd,
233 char **error_message ATTRIBUTE_UNUSED)
235 bfd_vma insn;
236 bfd_vma sym_value;
237 enum elf_sh_reloc_type r_type;
238 bfd_vma addr = reloc_entry->address;
239 bfd_size_type octets = addr * OCTETS_PER_BYTE (abfd, input_section);
240 bfd_byte *hit_data = (bfd_byte *) data + octets;
242 r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type;
244 if (output_bfd != NULL)
246 /* Partial linking--do nothing. */
247 reloc_entry->address += input_section->output_offset;
248 return bfd_reloc_ok;
251 /* Almost all relocs have to do with relaxing. If any work must be
252 done for them, it has been done in sh_relax_section. */
253 if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0)
254 return bfd_reloc_ok;
256 if (symbol_in != NULL
257 && bfd_is_und_section (symbol_in->section))
258 return bfd_reloc_undefined;
260 /* PR 17512: file: 9891ca98. */
261 if (octets + bfd_get_reloc_size (reloc_entry->howto)
262 > bfd_get_section_limit_octets (abfd, input_section))
263 return bfd_reloc_outofrange;
265 if (bfd_is_com_section (symbol_in->section))
266 sym_value = 0;
267 else
268 sym_value = (symbol_in->value +
269 symbol_in->section->output_section->vma +
270 symbol_in->section->output_offset);
272 switch (r_type)
274 case R_SH_DIR32:
275 insn = bfd_get_32 (abfd, hit_data);
276 insn += sym_value + reloc_entry->addend;
277 bfd_put_32 (abfd, insn, hit_data);
278 break;
279 case R_SH_IND12W:
280 insn = bfd_get_16 (abfd, hit_data);
281 sym_value += reloc_entry->addend;
282 sym_value -= (input_section->output_section->vma
283 + input_section->output_offset
284 + addr
285 + 4);
286 sym_value += (((insn & 0xfff) ^ 0x800) - 0x800) << 1;
287 insn = (insn & 0xf000) | ((sym_value >> 1) & 0xfff);
288 bfd_put_16 (abfd, insn, hit_data);
289 if (sym_value + 0x1000 >= 0x2000 || (sym_value & 1) != 0)
290 return bfd_reloc_overflow;
291 break;
292 default:
293 abort ();
294 break;
297 return bfd_reloc_ok;
300 /* This function is used for relocs which are only used for relaxing,
301 which the linker should otherwise ignore. */
303 static bfd_reloc_status_type
304 sh_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
305 asymbol *symbol ATTRIBUTE_UNUSED,
306 void *data ATTRIBUTE_UNUSED, asection *input_section,
307 bfd *output_bfd,
308 char **error_message ATTRIBUTE_UNUSED)
310 if (output_bfd != NULL)
311 reloc_entry->address += input_section->output_offset;
312 return bfd_reloc_ok;
315 /* This structure is used to map BFD reloc codes to SH ELF relocs. */
317 struct elf_reloc_map
319 bfd_reloc_code_real_type bfd_reloc_val;
320 unsigned char elf_reloc_val;
323 /* An array mapping BFD reloc codes to SH ELF relocs. */
325 static const struct elf_reloc_map sh_reloc_map[] =
327 { BFD_RELOC_NONE, R_SH_NONE },
328 { BFD_RELOC_32, R_SH_DIR32 },
329 { BFD_RELOC_16, R_SH_DIR16 },
330 { BFD_RELOC_8, R_SH_DIR8 },
331 { BFD_RELOC_CTOR, R_SH_DIR32 },
332 { BFD_RELOC_32_PCREL, R_SH_REL32 },
333 { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN },
334 { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W },
335 { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ },
336 { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL },
337 { BFD_RELOC_8_PCREL, R_SH_SWITCH8 },
338 { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 },
339 { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 },
340 { BFD_RELOC_SH_USES, R_SH_USES },
341 { BFD_RELOC_SH_COUNT, R_SH_COUNT },
342 { BFD_RELOC_SH_ALIGN, R_SH_ALIGN },
343 { BFD_RELOC_SH_CODE, R_SH_CODE },
344 { BFD_RELOC_SH_DATA, R_SH_DATA },
345 { BFD_RELOC_SH_LABEL, R_SH_LABEL },
346 { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT },
347 { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY },
348 { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START },
349 { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END },
350 { BFD_RELOC_SH_TLS_GD_32, R_SH_TLS_GD_32 },
351 { BFD_RELOC_SH_TLS_LD_32, R_SH_TLS_LD_32 },
352 { BFD_RELOC_SH_TLS_LDO_32, R_SH_TLS_LDO_32 },
353 { BFD_RELOC_SH_TLS_IE_32, R_SH_TLS_IE_32 },
354 { BFD_RELOC_SH_TLS_LE_32, R_SH_TLS_LE_32 },
355 { BFD_RELOC_SH_TLS_DTPMOD32, R_SH_TLS_DTPMOD32 },
356 { BFD_RELOC_SH_TLS_DTPOFF32, R_SH_TLS_DTPOFF32 },
357 { BFD_RELOC_SH_TLS_TPOFF32, R_SH_TLS_TPOFF32 },
358 { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 },
359 { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 },
360 { BFD_RELOC_SH_COPY, R_SH_COPY },
361 { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT },
362 { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT },
363 { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE },
364 { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF },
365 { BFD_RELOC_SH_GOTPC, R_SH_GOTPC },
366 { BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 },
367 { BFD_RELOC_SH_GOT20, R_SH_GOT20 },
368 { BFD_RELOC_SH_GOTOFF20, R_SH_GOTOFF20 },
369 { BFD_RELOC_SH_GOTFUNCDESC, R_SH_GOTFUNCDESC },
370 { BFD_RELOC_SH_GOTFUNCDESC20, R_SH_GOTFUNCDESC20 },
371 { BFD_RELOC_SH_GOTOFFFUNCDESC, R_SH_GOTOFFFUNCDESC },
372 { BFD_RELOC_SH_GOTOFFFUNCDESC20, R_SH_GOTOFFFUNCDESC20 },
373 { BFD_RELOC_SH_FUNCDESC, R_SH_FUNCDESC },
376 /* Given a BFD reloc code, return the howto structure for the
377 corresponding SH ELF reloc. */
379 static reloc_howto_type *
380 sh_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
382 unsigned int i;
384 for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++)
386 if (sh_reloc_map[i].bfd_reloc_val == code)
387 return get_howto_table (abfd) + (int) sh_reloc_map[i].elf_reloc_val;
390 return NULL;
393 static reloc_howto_type *
394 sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name)
396 unsigned int i;
398 if (vxworks_object_p (abfd))
400 for (i = 0;
401 i < (sizeof (sh_vxworks_howto_table)
402 / sizeof (sh_vxworks_howto_table[0]));
403 i++)
404 if (sh_vxworks_howto_table[i].name != NULL
405 && strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0)
406 return &sh_vxworks_howto_table[i];
408 else
410 for (i = 0;
411 i < (sizeof (sh_elf_howto_table)
412 / sizeof (sh_elf_howto_table[0]));
413 i++)
414 if (sh_elf_howto_table[i].name != NULL
415 && strcasecmp (sh_elf_howto_table[i].name, r_name) == 0)
416 return &sh_elf_howto_table[i];
419 return NULL;
422 /* Given an ELF reloc, fill in the howto field of a relent. */
424 static bfd_boolean
425 sh_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
427 unsigned int r;
429 r = ELF32_R_TYPE (dst->r_info);
431 if (r >= R_SH_max
432 || (r >= R_SH_FIRST_INVALID_RELOC && r <= R_SH_LAST_INVALID_RELOC)
433 || (r >= R_SH_FIRST_INVALID_RELOC_2 && r <= R_SH_LAST_INVALID_RELOC_2)
434 || (r >= R_SH_FIRST_INVALID_RELOC_3 && r <= R_SH_LAST_INVALID_RELOC_3)
435 || (r >= R_SH_FIRST_INVALID_RELOC_4 && r <= R_SH_LAST_INVALID_RELOC_4)
436 || (r >= R_SH_FIRST_INVALID_RELOC_5 && r <= R_SH_LAST_INVALID_RELOC_5)
437 || (r >= R_SH_FIRST_INVALID_RELOC_6 && r <= R_SH_LAST_INVALID_RELOC_6))
439 /* xgettext:c-format */
440 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
441 abfd, r);
442 bfd_set_error (bfd_error_bad_value);
443 return FALSE;
446 cache_ptr->howto = get_howto_table (abfd) + r;
447 return TRUE;
450 /* This function handles relaxing for SH ELF. See the corresponding
451 function in coff-sh.c for a description of what this does. FIXME:
452 There is a lot of duplication here between this code and the COFF
453 specific code. The format of relocs and symbols is wound deeply
454 into this code, but it would still be better if the duplication
455 could be eliminated somehow. Note in particular that although both
456 functions use symbols like R_SH_CODE, those symbols have different
457 values; in coff-sh.c they come from include/coff/sh.h, whereas here
458 they come from enum elf_sh_reloc_type in include/elf/sh.h. */
460 static bfd_boolean
461 sh_elf_relax_section (bfd *abfd, asection *sec,
462 struct bfd_link_info *link_info, bfd_boolean *again)
464 Elf_Internal_Shdr *symtab_hdr;
465 Elf_Internal_Rela *internal_relocs;
466 bfd_boolean have_code;
467 Elf_Internal_Rela *irel, *irelend;
468 bfd_byte *contents = NULL;
469 Elf_Internal_Sym *isymbuf = NULL;
471 *again = FALSE;
473 if (bfd_link_relocatable (link_info)
474 || (sec->flags & SEC_RELOC) == 0
475 || sec->reloc_count == 0)
476 return TRUE;
478 symtab_hdr = &elf_symtab_hdr (abfd);
480 internal_relocs = (_bfd_elf_link_read_relocs
481 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
482 link_info->keep_memory));
483 if (internal_relocs == NULL)
484 goto error_return;
486 have_code = FALSE;
488 irelend = internal_relocs + sec->reloc_count;
489 for (irel = internal_relocs; irel < irelend; irel++)
491 bfd_vma laddr, paddr, symval;
492 unsigned short insn;
493 Elf_Internal_Rela *irelfn, *irelscan, *irelcount;
494 bfd_signed_vma foff;
496 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE)
497 have_code = TRUE;
499 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES)
500 continue;
502 /* Get the section contents. */
503 if (contents == NULL)
505 if (elf_section_data (sec)->this_hdr.contents != NULL)
506 contents = elf_section_data (sec)->this_hdr.contents;
507 else
509 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
510 goto error_return;
514 /* The r_addend field of the R_SH_USES reloc will point us to
515 the register load. The 4 is because the r_addend field is
516 computed as though it were a jump offset, which are based
517 from 4 bytes after the jump instruction. */
518 laddr = irel->r_offset + 4 + irel->r_addend;
519 if (laddr >= sec->size)
521 /* xgettext:c-format */
522 _bfd_error_handler
523 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES offset"),
524 abfd, (uint64_t) irel->r_offset);
525 continue;
527 insn = bfd_get_16 (abfd, contents + laddr);
529 /* If the instruction is not mov.l NN,rN, we don't know what to
530 do. */
531 if ((insn & 0xf000) != 0xd000)
533 _bfd_error_handler
534 /* xgettext:c-format */
535 (_("%pB: %#" PRIx64 ": warning: "
536 "R_SH_USES points to unrecognized insn 0x%x"),
537 abfd, (uint64_t) irel->r_offset, insn);
538 continue;
541 /* Get the address from which the register is being loaded. The
542 displacement in the mov.l instruction is quadrupled. It is a
543 displacement from four bytes after the movl instruction, but,
544 before adding in the PC address, two least significant bits
545 of the PC are cleared. We assume that the section is aligned
546 on a four byte boundary. */
547 paddr = insn & 0xff;
548 paddr *= 4;
549 paddr += (laddr + 4) &~ (bfd_vma) 3;
550 if (paddr >= sec->size)
552 _bfd_error_handler
553 /* xgettext:c-format */
554 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES load offset"),
555 abfd, (uint64_t) irel->r_offset);
556 continue;
559 /* Get the reloc for the address from which the register is
560 being loaded. This reloc will tell us which function is
561 actually being called. */
562 for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
563 if (irelfn->r_offset == paddr
564 && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32)
565 break;
566 if (irelfn >= irelend)
568 _bfd_error_handler
569 /* xgettext:c-format */
570 (_("%pB: %#" PRIx64 ": warning: could not find expected reloc"),
571 abfd, (uint64_t) paddr);
572 continue;
575 /* Read this BFD's symbols if we haven't done so already. */
576 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
578 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
579 if (isymbuf == NULL)
580 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
581 symtab_hdr->sh_info, 0,
582 NULL, NULL, NULL);
583 if (isymbuf == NULL)
584 goto error_return;
587 /* Get the value of the symbol referred to by the reloc. */
588 if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
590 /* A local symbol. */
591 Elf_Internal_Sym *isym;
593 isym = isymbuf + ELF32_R_SYM (irelfn->r_info);
594 if (isym->st_shndx
595 != (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec))
597 _bfd_error_handler
598 /* xgettext:c-format */
599 (_("%pB: %#" PRIx64 ": warning: symbol in unexpected section"),
600 abfd, (uint64_t) paddr);
601 continue;
604 symval = (isym->st_value
605 + sec->output_section->vma
606 + sec->output_offset);
608 else
610 unsigned long indx;
611 struct elf_link_hash_entry *h;
613 indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info;
614 h = elf_sym_hashes (abfd)[indx];
615 BFD_ASSERT (h != NULL);
616 if (h->root.type != bfd_link_hash_defined
617 && h->root.type != bfd_link_hash_defweak)
619 /* This appears to be a reference to an undefined
620 symbol. Just ignore it--it will be caught by the
621 regular reloc processing. */
622 continue;
625 symval = (h->root.u.def.value
626 + h->root.u.def.section->output_section->vma
627 + h->root.u.def.section->output_offset);
630 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
631 symval += bfd_get_32 (abfd, contents + paddr);
632 else
633 symval += irelfn->r_addend;
635 /* See if this function call can be shortened. */
636 foff = (symval
637 - (irel->r_offset
638 + sec->output_section->vma
639 + sec->output_offset
640 + 4));
641 /* A branch to an address beyond ours might be increased by an
642 .align that doesn't move when bytes behind us are deleted.
643 So, we add some slop in this calculation to allow for
644 that. */
645 if (foff < -0x1000 || foff >= 0x1000 - 8)
647 /* After all that work, we can't shorten this function call. */
648 continue;
651 /* Shorten the function call. */
653 /* For simplicity of coding, we are going to modify the section
654 contents, the section relocs, and the BFD symbol table. We
655 must tell the rest of the code not to free up this
656 information. It would be possible to instead create a table
657 of changes which have to be made, as is done in coff-mips.c;
658 that would be more work, but would require less memory when
659 the linker is run. */
661 elf_section_data (sec)->relocs = internal_relocs;
662 elf_section_data (sec)->this_hdr.contents = contents;
663 symtab_hdr->contents = (unsigned char *) isymbuf;
665 /* Replace the jmp/jsr with a bra/bsr. */
667 /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
668 replace the jmp/jsr with a bra/bsr. */
669 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W);
670 /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
671 here, but that only checks if the symbol is an external symbol,
672 not if the symbol is in a different section. Besides, we need
673 a consistent meaning for the relocation, so we just assume here that
674 the value of the symbol is not available. */
676 /* We can't fully resolve this yet, because the external
677 symbol value may be changed by future relaxing. We let
678 the final link phase handle it. */
679 if (bfd_get_16 (abfd, contents + irel->r_offset) & 0x0020)
680 bfd_put_16 (abfd, (bfd_vma) 0xa000, contents + irel->r_offset);
681 else
682 bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
684 irel->r_addend = -4;
686 /* When we calculated the symbol "value" we had an offset in the
687 DIR32's word in memory (we read and add it above). However,
688 the jsr we create does NOT have this offset encoded, so we
689 have to add it to the addend to preserve it. */
690 irel->r_addend += bfd_get_32 (abfd, contents + paddr);
692 /* See if there is another R_SH_USES reloc referring to the same
693 register load. */
694 for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
695 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES
696 && laddr == irelscan->r_offset + 4 + irelscan->r_addend)
697 break;
698 if (irelscan < irelend)
700 /* Some other function call depends upon this register load,
701 and we have not yet converted that function call.
702 Indeed, we may never be able to convert it. There is
703 nothing else we can do at this point. */
704 continue;
707 /* Look for a R_SH_COUNT reloc on the location where the
708 function address is stored. Do this before deleting any
709 bytes, to avoid confusion about the address. */
710 for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
711 if (irelcount->r_offset == paddr
712 && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT)
713 break;
715 /* Delete the register load. */
716 if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2))
717 goto error_return;
719 /* That will change things, so, just in case it permits some
720 other function call to come within range, we should relax
721 again. Note that this is not required, and it may be slow. */
722 *again = TRUE;
724 /* Now check whether we got a COUNT reloc. */
725 if (irelcount >= irelend)
727 _bfd_error_handler
728 /* xgettext:c-format */
729 (_("%pB: %#" PRIx64 ": warning: "
730 "could not find expected COUNT reloc"),
731 abfd, (uint64_t) paddr);
732 continue;
735 /* The number of uses is stored in the r_addend field. We've
736 just deleted one. */
737 if (irelcount->r_addend == 0)
739 /* xgettext:c-format */
740 _bfd_error_handler (_("%pB: %#" PRIx64 ": warning: bad count"),
741 abfd, (uint64_t) paddr);
742 continue;
745 --irelcount->r_addend;
747 /* If there are no more uses, we can delete the address. Reload
748 the address from irelfn, in case it was changed by the
749 previous call to sh_elf_relax_delete_bytes. */
750 if (irelcount->r_addend == 0)
752 if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4))
753 goto error_return;
756 /* We've done all we can with that function call. */
759 /* Look for load and store instructions that we can align on four
760 byte boundaries. */
761 if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4
762 && have_code)
764 bfd_boolean swapped;
766 /* Get the section contents. */
767 if (contents == NULL)
769 if (elf_section_data (sec)->this_hdr.contents != NULL)
770 contents = elf_section_data (sec)->this_hdr.contents;
771 else
773 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
774 goto error_return;
778 if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents,
779 &swapped))
780 goto error_return;
782 if (swapped)
784 elf_section_data (sec)->relocs = internal_relocs;
785 elf_section_data (sec)->this_hdr.contents = contents;
786 symtab_hdr->contents = (unsigned char *) isymbuf;
790 if (isymbuf != NULL
791 && symtab_hdr->contents != (unsigned char *) isymbuf)
793 if (! link_info->keep_memory)
794 free (isymbuf);
795 else
797 /* Cache the symbols for elf_link_input_bfd. */
798 symtab_hdr->contents = (unsigned char *) isymbuf;
802 if (contents != NULL
803 && elf_section_data (sec)->this_hdr.contents != contents)
805 if (! link_info->keep_memory)
806 free (contents);
807 else
809 /* Cache the section contents for elf_link_input_bfd. */
810 elf_section_data (sec)->this_hdr.contents = contents;
814 if (internal_relocs != NULL
815 && elf_section_data (sec)->relocs != internal_relocs)
816 free (internal_relocs);
818 return TRUE;
820 error_return:
821 if (isymbuf != NULL
822 && symtab_hdr->contents != (unsigned char *) isymbuf)
823 free (isymbuf);
824 if (contents != NULL
825 && elf_section_data (sec)->this_hdr.contents != contents)
826 free (contents);
827 if (internal_relocs != NULL
828 && elf_section_data (sec)->relocs != internal_relocs)
829 free (internal_relocs);
831 return FALSE;
834 /* Delete some bytes from a section while relaxing. FIXME: There is a
835 lot of duplication between this function and sh_relax_delete_bytes
836 in coff-sh.c. */
838 static bfd_boolean
839 sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr,
840 int count)
842 Elf_Internal_Shdr *symtab_hdr;
843 unsigned int sec_shndx;
844 bfd_byte *contents;
845 Elf_Internal_Rela *irel, *irelend;
846 Elf_Internal_Rela *irelalign;
847 bfd_vma toaddr;
848 Elf_Internal_Sym *isymbuf, *isym, *isymend;
849 struct elf_link_hash_entry **sym_hashes;
850 struct elf_link_hash_entry **end_hashes;
851 unsigned int symcount;
852 asection *o;
854 symtab_hdr = &elf_symtab_hdr (abfd);
855 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
857 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
859 contents = elf_section_data (sec)->this_hdr.contents;
861 /* The deletion must stop at the next ALIGN reloc for an alignment
862 power larger than the number of bytes we are deleting. */
864 irelalign = NULL;
865 toaddr = sec->size;
867 irel = elf_section_data (sec)->relocs;
868 irelend = irel + sec->reloc_count;
869 for (; irel < irelend; irel++)
871 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
872 && irel->r_offset > addr
873 && count < (1 << irel->r_addend))
875 irelalign = irel;
876 toaddr = irel->r_offset;
877 break;
881 /* Actually delete the bytes. */
882 memmove (contents + addr, contents + addr + count,
883 (size_t) (toaddr - addr - count));
884 if (irelalign == NULL)
885 sec->size -= count;
886 else
888 int i;
890 #define NOP_OPCODE (0x0009)
892 BFD_ASSERT ((count & 1) == 0);
893 for (i = 0; i < count; i += 2)
894 bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
897 /* Adjust all the relocs. */
898 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
900 bfd_vma nraddr, stop;
901 bfd_vma start = 0;
902 int insn = 0;
903 int off, adjust, oinsn;
904 bfd_signed_vma voff = 0;
905 bfd_boolean overflow;
907 /* Get the new reloc address. */
908 nraddr = irel->r_offset;
909 if ((irel->r_offset > addr
910 && irel->r_offset < toaddr)
911 || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
912 && irel->r_offset == toaddr))
913 nraddr -= count;
915 /* See if this reloc was for the bytes we have deleted, in which
916 case we no longer care about it. Don't delete relocs which
917 represent addresses, though. */
918 if (irel->r_offset >= addr
919 && irel->r_offset < addr + count
920 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN
921 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE
922 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA
923 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL)
924 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
925 (int) R_SH_NONE);
927 /* If this is a PC relative reloc, see if the range it covers
928 includes the bytes we have deleted. */
929 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
931 default:
932 break;
934 case R_SH_DIR8WPN:
935 case R_SH_IND12W:
936 case R_SH_DIR8WPZ:
937 case R_SH_DIR8WPL:
938 start = irel->r_offset;
939 insn = bfd_get_16 (abfd, contents + nraddr);
940 break;
943 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
945 default:
946 start = stop = addr;
947 break;
949 case R_SH_DIR32:
950 /* If this reloc is against a symbol defined in this
951 section, and the symbol will not be adjusted below, we
952 must check the addend to see it will put the value in
953 range to be adjusted, and hence must be changed. */
954 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
956 isym = isymbuf + ELF32_R_SYM (irel->r_info);
957 if (isym->st_shndx == sec_shndx
958 && (isym->st_value <= addr
959 || isym->st_value >= toaddr))
961 bfd_vma val;
963 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
965 val = bfd_get_32 (abfd, contents + nraddr);
966 val += isym->st_value;
967 if (val > addr && val < toaddr)
968 bfd_put_32 (abfd, val - count, contents + nraddr);
970 else
972 val = isym->st_value + irel->r_addend;
973 if (val > addr && val < toaddr)
974 irel->r_addend -= count;
978 start = stop = addr;
979 break;
981 case R_SH_DIR8WPN:
982 off = insn & 0xff;
983 if (off & 0x80)
984 off -= 0x100;
985 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
986 break;
988 case R_SH_IND12W:
989 off = insn & 0xfff;
990 if (! off)
992 /* This has been made by previous relaxation. Since the
993 relocation will be against an external symbol, the
994 final relocation will just do the right thing. */
995 start = stop = addr;
997 else
999 if (off & 0x800)
1000 off -= 0x1000;
1001 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
1003 /* The addend will be against the section symbol, thus
1004 for adjusting the addend, the relevant start is the
1005 start of the section.
1006 N.B. If we want to abandon in-place changes here and
1007 test directly using symbol + addend, we have to take into
1008 account that the addend has already been adjusted by -4. */
1009 if (stop > addr && stop < toaddr)
1010 irel->r_addend -= count;
1012 break;
1014 case R_SH_DIR8WPZ:
1015 off = insn & 0xff;
1016 stop = start + 4 + off * 2;
1017 break;
1019 case R_SH_DIR8WPL:
1020 off = insn & 0xff;
1021 stop = (start & ~(bfd_vma) 3) + 4 + off * 4;
1022 break;
1024 case R_SH_SWITCH8:
1025 case R_SH_SWITCH16:
1026 case R_SH_SWITCH32:
1027 /* These relocs types represent
1028 .word L2-L1
1029 The r_addend field holds the difference between the reloc
1030 address and L1. That is the start of the reloc, and
1031 adding in the contents gives us the top. We must adjust
1032 both the r_offset field and the section contents.
1033 N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1034 and the elf bfd r_offset is called r_vaddr. */
1036 stop = irel->r_offset;
1037 start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend);
1039 if (start > addr
1040 && start < toaddr
1041 && (stop <= addr || stop >= toaddr))
1042 irel->r_addend += count;
1043 else if (stop > addr
1044 && stop < toaddr
1045 && (start <= addr || start >= toaddr))
1046 irel->r_addend -= count;
1048 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16)
1049 voff = bfd_get_signed_16 (abfd, contents + nraddr);
1050 else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8)
1051 voff = bfd_get_8 (abfd, contents + nraddr);
1052 else
1053 voff = bfd_get_signed_32 (abfd, contents + nraddr);
1054 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1056 break;
1058 case R_SH_USES:
1059 start = irel->r_offset;
1060 stop = (bfd_vma) ((bfd_signed_vma) start
1061 + (long) irel->r_addend
1062 + 4);
1063 break;
1066 if (start > addr
1067 && start < toaddr
1068 && (stop <= addr || stop >= toaddr))
1069 adjust = count;
1070 else if (stop > addr
1071 && stop < toaddr
1072 && (start <= addr || start >= toaddr))
1073 adjust = - count;
1074 else
1075 adjust = 0;
1077 if (adjust != 0)
1079 oinsn = insn;
1080 overflow = FALSE;
1081 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
1083 default:
1084 abort ();
1085 break;
1087 case R_SH_DIR8WPN:
1088 case R_SH_DIR8WPZ:
1089 insn += adjust / 2;
1090 if ((oinsn & 0xff00) != (insn & 0xff00))
1091 overflow = TRUE;
1092 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1093 break;
1095 case R_SH_IND12W:
1096 insn += adjust / 2;
1097 if ((oinsn & 0xf000) != (insn & 0xf000))
1098 overflow = TRUE;
1099 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1100 break;
1102 case R_SH_DIR8WPL:
1103 BFD_ASSERT (adjust == count || count >= 4);
1104 if (count >= 4)
1105 insn += adjust / 4;
1106 else
1108 if ((irel->r_offset & 3) == 0)
1109 ++insn;
1111 if ((oinsn & 0xff00) != (insn & 0xff00))
1112 overflow = TRUE;
1113 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1114 break;
1116 case R_SH_SWITCH8:
1117 voff += adjust;
1118 if (voff < 0 || voff >= 0xff)
1119 overflow = TRUE;
1120 bfd_put_8 (abfd, voff, contents + nraddr);
1121 break;
1123 case R_SH_SWITCH16:
1124 voff += adjust;
1125 if (voff < - 0x8000 || voff >= 0x8000)
1126 overflow = TRUE;
1127 bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr);
1128 break;
1130 case R_SH_SWITCH32:
1131 voff += adjust;
1132 bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr);
1133 break;
1135 case R_SH_USES:
1136 irel->r_addend += adjust;
1137 break;
1140 if (overflow)
1142 _bfd_error_handler
1143 /* xgettext:c-format */
1144 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1145 abfd, (uint64_t) irel->r_offset);
1146 bfd_set_error (bfd_error_bad_value);
1147 return FALSE;
1151 irel->r_offset = nraddr;
1154 /* Look through all the other sections. If there contain any IMM32
1155 relocs against internal symbols which we are not going to adjust
1156 below, we may need to adjust the addends. */
1157 for (o = abfd->sections; o != NULL; o = o->next)
1159 Elf_Internal_Rela *internal_relocs;
1160 Elf_Internal_Rela *irelscan, *irelscanend;
1161 bfd_byte *ocontents;
1163 if (o == sec
1164 || (o->flags & SEC_RELOC) == 0
1165 || o->reloc_count == 0)
1166 continue;
1168 /* We always cache the relocs. Perhaps, if info->keep_memory is
1169 FALSE, we should free them, if we are permitted to, when we
1170 leave sh_coff_relax_section. */
1171 internal_relocs = (_bfd_elf_link_read_relocs
1172 (abfd, o, NULL, (Elf_Internal_Rela *) NULL, TRUE));
1173 if (internal_relocs == NULL)
1174 return FALSE;
1176 ocontents = NULL;
1177 irelscanend = internal_relocs + o->reloc_count;
1178 for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
1180 /* Dwarf line numbers use R_SH_SWITCH32 relocs. */
1181 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32)
1183 bfd_vma start, stop;
1184 bfd_signed_vma voff;
1186 if (ocontents == NULL)
1188 if (elf_section_data (o)->this_hdr.contents != NULL)
1189 ocontents = elf_section_data (o)->this_hdr.contents;
1190 else
1192 /* We always cache the section contents.
1193 Perhaps, if info->keep_memory is FALSE, we
1194 should free them, if we are permitted to,
1195 when we leave sh_coff_relax_section. */
1196 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1198 if (ocontents != NULL)
1199 free (ocontents);
1200 return FALSE;
1203 elf_section_data (o)->this_hdr.contents = ocontents;
1207 stop = irelscan->r_offset;
1208 start
1209 = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend);
1211 /* STOP is in a different section, so it won't change. */
1212 if (start > addr && start < toaddr)
1213 irelscan->r_addend += count;
1215 voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset);
1216 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1218 if (start > addr
1219 && start < toaddr
1220 && (stop <= addr || stop >= toaddr))
1221 bfd_put_signed_32 (abfd, (bfd_vma) voff + count,
1222 ocontents + irelscan->r_offset);
1223 else if (stop > addr
1224 && stop < toaddr
1225 && (start <= addr || start >= toaddr))
1226 bfd_put_signed_32 (abfd, (bfd_vma) voff - count,
1227 ocontents + irelscan->r_offset);
1230 if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32)
1231 continue;
1233 if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info)
1234 continue;
1237 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1238 if (isym->st_shndx == sec_shndx
1239 && (isym->st_value <= addr
1240 || isym->st_value >= toaddr))
1242 bfd_vma val;
1244 if (ocontents == NULL)
1246 if (elf_section_data (o)->this_hdr.contents != NULL)
1247 ocontents = elf_section_data (o)->this_hdr.contents;
1248 else
1250 /* We always cache the section contents.
1251 Perhaps, if info->keep_memory is FALSE, we
1252 should free them, if we are permitted to,
1253 when we leave sh_coff_relax_section. */
1254 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1256 if (ocontents != NULL)
1257 free (ocontents);
1258 return FALSE;
1261 elf_section_data (o)->this_hdr.contents = ocontents;
1265 val = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
1266 val += isym->st_value;
1267 if (val > addr && val < toaddr)
1268 bfd_put_32 (abfd, val - count,
1269 ocontents + irelscan->r_offset);
1274 /* Adjust the local symbols defined in this section. */
1275 isymend = isymbuf + symtab_hdr->sh_info;
1276 for (isym = isymbuf; isym < isymend; isym++)
1278 if (isym->st_shndx == sec_shndx
1279 && isym->st_value > addr
1280 && isym->st_value < toaddr)
1281 isym->st_value -= count;
1284 /* Now adjust the global symbols defined in this section. */
1285 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1286 - symtab_hdr->sh_info);
1287 sym_hashes = elf_sym_hashes (abfd);
1288 end_hashes = sym_hashes + symcount;
1289 for (; sym_hashes < end_hashes; sym_hashes++)
1291 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1292 if ((sym_hash->root.type == bfd_link_hash_defined
1293 || sym_hash->root.type == bfd_link_hash_defweak)
1294 && sym_hash->root.u.def.section == sec
1295 && sym_hash->root.u.def.value > addr
1296 && sym_hash->root.u.def.value < toaddr)
1298 sym_hash->root.u.def.value -= count;
1302 /* See if we can move the ALIGN reloc forward. We have adjusted
1303 r_offset for it already. */
1304 if (irelalign != NULL)
1306 bfd_vma alignto, alignaddr;
1308 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
1309 alignaddr = BFD_ALIGN (irelalign->r_offset,
1310 1 << irelalign->r_addend);
1311 if (alignto != alignaddr)
1313 /* Tail recursion. */
1314 return sh_elf_relax_delete_bytes (abfd, sec, alignaddr,
1315 (int) (alignto - alignaddr));
1319 return TRUE;
1322 /* Look for loads and stores which we can align to four byte
1323 boundaries. This is like sh_align_loads in coff-sh.c. */
1325 static bfd_boolean
1326 sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1327 Elf_Internal_Rela *internal_relocs,
1328 bfd_byte *contents ATTRIBUTE_UNUSED,
1329 bfd_boolean *pswapped)
1331 Elf_Internal_Rela *irel, *irelend;
1332 bfd_vma *labels = NULL;
1333 bfd_vma *label, *label_end;
1334 bfd_size_type amt;
1336 *pswapped = FALSE;
1338 irelend = internal_relocs + sec->reloc_count;
1340 /* Get all the addresses with labels on them. */
1341 amt = sec->reloc_count;
1342 amt *= sizeof (bfd_vma);
1343 labels = (bfd_vma *) bfd_malloc (amt);
1344 if (labels == NULL)
1345 goto error_return;
1346 label_end = labels;
1347 for (irel = internal_relocs; irel < irelend; irel++)
1349 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL)
1351 *label_end = irel->r_offset;
1352 ++label_end;
1356 /* Note that the assembler currently always outputs relocs in
1357 address order. If that ever changes, this code will need to sort
1358 the label values and the relocs. */
1360 label = labels;
1362 for (irel = internal_relocs; irel < irelend; irel++)
1364 bfd_vma start, stop;
1366 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE)
1367 continue;
1369 start = irel->r_offset;
1371 for (irel++; irel < irelend; irel++)
1372 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA)
1373 break;
1374 if (irel < irelend)
1375 stop = irel->r_offset;
1376 else
1377 stop = sec->size;
1379 if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns,
1380 internal_relocs, &label,
1381 label_end, start, stop, pswapped))
1382 goto error_return;
1385 free (labels);
1387 return TRUE;
1389 error_return:
1390 if (labels != NULL)
1391 free (labels);
1392 return FALSE;
1395 /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */
1397 static bfd_boolean
1398 sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs,
1399 bfd_byte *contents, bfd_vma addr)
1401 Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs;
1402 unsigned short i1, i2;
1403 Elf_Internal_Rela *irel, *irelend;
1405 /* Swap the instructions themselves. */
1406 i1 = bfd_get_16 (abfd, contents + addr);
1407 i2 = bfd_get_16 (abfd, contents + addr + 2);
1408 bfd_put_16 (abfd, (bfd_vma) i2, contents + addr);
1409 bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2);
1411 /* Adjust all reloc addresses. */
1412 irelend = internal_relocs + sec->reloc_count;
1413 for (irel = internal_relocs; irel < irelend; irel++)
1415 enum elf_sh_reloc_type type;
1416 int add;
1418 /* There are a few special types of relocs that we don't want to
1419 adjust. These relocs do not apply to the instruction itself,
1420 but are only associated with the address. */
1421 type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info);
1422 if (type == R_SH_ALIGN
1423 || type == R_SH_CODE
1424 || type == R_SH_DATA
1425 || type == R_SH_LABEL)
1426 continue;
1428 /* If an R_SH_USES reloc points to one of the addresses being
1429 swapped, we must adjust it. It would be incorrect to do this
1430 for a jump, though, since we want to execute both
1431 instructions after the jump. (We have avoided swapping
1432 around a label, so the jump will not wind up executing an
1433 instruction it shouldn't). */
1434 if (type == R_SH_USES)
1436 bfd_vma off;
1438 off = irel->r_offset + 4 + irel->r_addend;
1439 if (off == addr)
1440 irel->r_offset += 2;
1441 else if (off == addr + 2)
1442 irel->r_offset -= 2;
1445 if (irel->r_offset == addr)
1447 irel->r_offset += 2;
1448 add = -2;
1450 else if (irel->r_offset == addr + 2)
1452 irel->r_offset -= 2;
1453 add = 2;
1455 else
1456 add = 0;
1458 if (add != 0)
1460 bfd_byte *loc;
1461 unsigned short insn, oinsn;
1462 bfd_boolean overflow;
1464 loc = contents + irel->r_offset;
1465 overflow = FALSE;
1466 switch (type)
1468 default:
1469 break;
1471 case R_SH_DIR8WPN:
1472 case R_SH_DIR8WPZ:
1473 insn = bfd_get_16 (abfd, loc);
1474 oinsn = insn;
1475 insn += add / 2;
1476 if ((oinsn & 0xff00) != (insn & 0xff00))
1477 overflow = TRUE;
1478 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1479 break;
1481 case R_SH_IND12W:
1482 insn = bfd_get_16 (abfd, loc);
1483 oinsn = insn;
1484 insn += add / 2;
1485 if ((oinsn & 0xf000) != (insn & 0xf000))
1486 overflow = TRUE;
1487 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1488 break;
1490 case R_SH_DIR8WPL:
1491 /* This reloc ignores the least significant 3 bits of
1492 the program counter before adding in the offset.
1493 This means that if ADDR is at an even address, the
1494 swap will not affect the offset. If ADDR is an at an
1495 odd address, then the instruction will be crossing a
1496 four byte boundary, and must be adjusted. */
1497 if ((addr & 3) != 0)
1499 insn = bfd_get_16 (abfd, loc);
1500 oinsn = insn;
1501 insn += add / 2;
1502 if ((oinsn & 0xff00) != (insn & 0xff00))
1503 overflow = TRUE;
1504 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1507 break;
1510 if (overflow)
1512 _bfd_error_handler
1513 /* xgettext:c-format */
1514 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1515 abfd, (uint64_t) irel->r_offset);
1516 bfd_set_error (bfd_error_bad_value);
1517 return FALSE;
1522 return TRUE;
1525 /* Describes one of the various PLT styles. */
1527 struct elf_sh_plt_info
1529 /* The template for the first PLT entry, or NULL if there is no special
1530 first entry. */
1531 const bfd_byte *plt0_entry;
1533 /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */
1534 bfd_vma plt0_entry_size;
1536 /* Index I is the offset into PLT0_ENTRY of a pointer to
1537 _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE
1538 if there is no such pointer. */
1539 bfd_vma plt0_got_fields[3];
1541 /* The template for a symbol's PLT entry. */
1542 const bfd_byte *symbol_entry;
1544 /* The size of SYMBOL_ENTRY in bytes. */
1545 bfd_vma symbol_entry_size;
1547 /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used
1548 on all targets. The comments by each member indicate the value
1549 that the field must hold. */
1550 struct {
1551 bfd_vma got_entry; /* the address of the symbol's .got.plt entry */
1552 bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */
1553 bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */
1554 bfd_boolean got20; /* TRUE if got_entry points to a movi20
1555 instruction (instead of a constant pool
1556 entry). */
1557 } symbol_fields;
1559 /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
1560 bfd_vma symbol_resolve_offset;
1562 /* A different PLT layout which can be used for the first
1563 MAX_SHORT_PLT entries. It must share the same plt0. NULL in
1564 other cases. */
1565 const struct elf_sh_plt_info *short_plt;
1568 /* The size in bytes of an entry in the procedure linkage table. */
1570 #define ELF_PLT_ENTRY_SIZE 28
1572 /* First entry in an absolute procedure linkage table look like this. */
1574 /* Note - this code has been "optimised" not to use r2. r2 is used by
1575 GCC to return the address of large structures, so it should not be
1576 corrupted here. This does mean however, that this PLT does not conform
1577 to the SH PIC ABI. That spec says that r0 contains the type of the PLT
1578 and r2 contains the GOT id. This version stores the GOT id in r0 and
1579 ignores the type. Loaders can easily detect this difference however,
1580 since the type will always be 0 or 8, and the GOT ids will always be
1581 greater than or equal to 12. */
1582 static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1584 0xd0, 0x05, /* mov.l 2f,r0 */
1585 0x60, 0x02, /* mov.l @r0,r0 */
1586 0x2f, 0x06, /* mov.l r0,@-r15 */
1587 0xd0, 0x03, /* mov.l 1f,r0 */
1588 0x60, 0x02, /* mov.l @r0,r0 */
1589 0x40, 0x2b, /* jmp @r0 */
1590 0x60, 0xf6, /* mov.l @r15+,r0 */
1591 0x00, 0x09, /* nop */
1592 0x00, 0x09, /* nop */
1593 0x00, 0x09, /* nop */
1594 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1595 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1598 static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1600 0x05, 0xd0, /* mov.l 2f,r0 */
1601 0x02, 0x60, /* mov.l @r0,r0 */
1602 0x06, 0x2f, /* mov.l r0,@-r15 */
1603 0x03, 0xd0, /* mov.l 1f,r0 */
1604 0x02, 0x60, /* mov.l @r0,r0 */
1605 0x2b, 0x40, /* jmp @r0 */
1606 0xf6, 0x60, /* mov.l @r15+,r0 */
1607 0x09, 0x00, /* nop */
1608 0x09, 0x00, /* nop */
1609 0x09, 0x00, /* nop */
1610 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1611 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1614 /* Sebsequent entries in an absolute procedure linkage table look like
1615 this. */
1617 static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1619 0xd0, 0x04, /* mov.l 1f,r0 */
1620 0x60, 0x02, /* mov.l @(r0,r12),r0 */
1621 0xd1, 0x02, /* mov.l 0f,r1 */
1622 0x40, 0x2b, /* jmp @r0 */
1623 0x60, 0x13, /* mov r1,r0 */
1624 0xd1, 0x03, /* mov.l 2f,r1 */
1625 0x40, 0x2b, /* jmp @r0 */
1626 0x00, 0x09, /* nop */
1627 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1628 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1629 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1632 static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1634 0x04, 0xd0, /* mov.l 1f,r0 */
1635 0x02, 0x60, /* mov.l @r0,r0 */
1636 0x02, 0xd1, /* mov.l 0f,r1 */
1637 0x2b, 0x40, /* jmp @r0 */
1638 0x13, 0x60, /* mov r1,r0 */
1639 0x03, 0xd1, /* mov.l 2f,r1 */
1640 0x2b, 0x40, /* jmp @r0 */
1641 0x09, 0x00, /* nop */
1642 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1643 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1644 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1647 /* Entries in a PIC procedure linkage table look like this. */
1649 static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1651 0xd0, 0x04, /* mov.l 1f,r0 */
1652 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1653 0x40, 0x2b, /* jmp @r0 */
1654 0x00, 0x09, /* nop */
1655 0x50, 0xc2, /* mov.l @(8,r12),r0 */
1656 0xd1, 0x03, /* mov.l 2f,r1 */
1657 0x40, 0x2b, /* jmp @r0 */
1658 0x50, 0xc1, /* mov.l @(4,r12),r0 */
1659 0x00, 0x09, /* nop */
1660 0x00, 0x09, /* nop */
1661 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1662 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1665 static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1667 0x04, 0xd0, /* mov.l 1f,r0 */
1668 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1669 0x2b, 0x40, /* jmp @r0 */
1670 0x09, 0x00, /* nop */
1671 0xc2, 0x50, /* mov.l @(8,r12),r0 */
1672 0x03, 0xd1, /* mov.l 2f,r1 */
1673 0x2b, 0x40, /* jmp @r0 */
1674 0xc1, 0x50, /* mov.l @(4,r12),r0 */
1675 0x09, 0x00, /* nop */
1676 0x09, 0x00, /* nop */
1677 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1678 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1681 static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1684 /* Big-endian non-PIC. */
1685 elf_sh_plt0_entry_be,
1686 ELF_PLT_ENTRY_SIZE,
1687 { MINUS_ONE, 24, 20 },
1688 elf_sh_plt_entry_be,
1689 ELF_PLT_ENTRY_SIZE,
1690 { 20, 16, 24, FALSE },
1692 NULL
1695 /* Little-endian non-PIC. */
1696 elf_sh_plt0_entry_le,
1697 ELF_PLT_ENTRY_SIZE,
1698 { MINUS_ONE, 24, 20 },
1699 elf_sh_plt_entry_le,
1700 ELF_PLT_ENTRY_SIZE,
1701 { 20, 16, 24, FALSE },
1703 NULL
1708 /* Big-endian PIC. */
1709 elf_sh_plt0_entry_be,
1710 ELF_PLT_ENTRY_SIZE,
1711 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1712 elf_sh_pic_plt_entry_be,
1713 ELF_PLT_ENTRY_SIZE,
1714 { 20, MINUS_ONE, 24, FALSE },
1716 NULL
1719 /* Little-endian PIC. */
1720 elf_sh_plt0_entry_le,
1721 ELF_PLT_ENTRY_SIZE,
1722 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1723 elf_sh_pic_plt_entry_le,
1724 ELF_PLT_ENTRY_SIZE,
1725 { 20, MINUS_ONE, 24, FALSE },
1727 NULL
1732 #define VXWORKS_PLT_HEADER_SIZE 12
1733 #define VXWORKS_PLT_ENTRY_SIZE 24
1735 static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] =
1737 0xd1, 0x01, /* mov.l @(8,pc),r1 */
1738 0x61, 0x12, /* mov.l @r1,r1 */
1739 0x41, 0x2b, /* jmp @r1 */
1740 0x00, 0x09, /* nop */
1741 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1744 static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] =
1746 0x01, 0xd1, /* mov.l @(8,pc),r1 */
1747 0x12, 0x61, /* mov.l @r1,r1 */
1748 0x2b, 0x41, /* jmp @r1 */
1749 0x09, 0x00, /* nop */
1750 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1753 static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1755 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1756 0x60, 0x02, /* mov.l @r0,r0 */
1757 0x40, 0x2b, /* jmp @r0 */
1758 0x00, 0x09, /* nop */
1759 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1760 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1761 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */
1762 0x00, 0x09, /* nop */
1763 0x00, 0x09, /* nop */
1764 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1767 static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1769 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1770 0x02, 0x60, /* mov.l @r0,r0 */
1771 0x2b, 0x40, /* jmp @r0 */
1772 0x09, 0x00, /* nop */
1773 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1774 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1775 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */
1776 0x09, 0x00, /* nop */
1777 0x09, 0x00, /* nop */
1778 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1781 static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1783 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1784 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1785 0x40, 0x2b, /* jmp @r0 */
1786 0x00, 0x09, /* nop */
1787 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1788 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1789 0x51, 0xc2, /* mov.l @(8,r12),r1 */
1790 0x41, 0x2b, /* jmp @r1 */
1791 0x00, 0x09, /* nop */
1792 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1795 static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1797 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1798 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1799 0x2b, 0x40, /* jmp @r0 */
1800 0x09, 0x00, /* nop */
1801 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1802 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1803 0xc2, 0x51, /* mov.l @(8,r12),r1 */
1804 0x2b, 0x41, /* jmp @r1 */
1805 0x09, 0x00, /* nop */
1806 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1809 static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = {
1812 /* Big-endian non-PIC. */
1813 vxworks_sh_plt0_entry_be,
1814 VXWORKS_PLT_HEADER_SIZE,
1815 { MINUS_ONE, MINUS_ONE, 8 },
1816 vxworks_sh_plt_entry_be,
1817 VXWORKS_PLT_ENTRY_SIZE,
1818 { 8, 14, 20, FALSE },
1820 NULL
1823 /* Little-endian non-PIC. */
1824 vxworks_sh_plt0_entry_le,
1825 VXWORKS_PLT_HEADER_SIZE,
1826 { MINUS_ONE, MINUS_ONE, 8 },
1827 vxworks_sh_plt_entry_le,
1828 VXWORKS_PLT_ENTRY_SIZE,
1829 { 8, 14, 20, FALSE },
1831 NULL
1836 /* Big-endian PIC. */
1837 NULL,
1839 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1840 vxworks_sh_pic_plt_entry_be,
1841 VXWORKS_PLT_ENTRY_SIZE,
1842 { 8, MINUS_ONE, 20, FALSE },
1844 NULL
1847 /* Little-endian PIC. */
1848 NULL,
1850 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1851 vxworks_sh_pic_plt_entry_le,
1852 VXWORKS_PLT_ENTRY_SIZE,
1853 { 8, MINUS_ONE, 20, FALSE },
1855 NULL
1860 /* FDPIC PLT entries. Two unimplemented optimizations for lazy
1861 binding are to omit the lazy binding stub when linking with -z now
1862 and to move lazy binding stubs into a separate region for better
1863 cache behavior. */
1865 #define FDPIC_PLT_ENTRY_SIZE 28
1866 #define FDPIC_PLT_LAZY_OFFSET 20
1868 /* FIXME: The lazy binding stub requires a plt0 - which may need to be
1869 duplicated if it is out of range, or which can be inlined. So
1870 right now it is always inlined, which wastes a word per stub. It
1871 might be easier to handle the duplication if we put the lazy
1872 stubs separately. */
1874 static const bfd_byte fdpic_sh_plt_entry_be[FDPIC_PLT_ENTRY_SIZE] =
1876 0xd0, 0x02, /* mov.l @(12,pc),r0 */
1877 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1878 0x70, 0x04, /* add #4, r0 */
1879 0x41, 0x2b, /* jmp @r1 */
1880 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1881 0x00, 0x09, /* nop */
1882 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1883 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1884 0x60, 0xc2, /* mov.l @r12,r0 */
1885 0x40, 0x2b, /* jmp @r0 */
1886 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1887 0x00, 0x09, /* nop */
1890 static const bfd_byte fdpic_sh_plt_entry_le[FDPIC_PLT_ENTRY_SIZE] =
1892 0x02, 0xd0, /* mov.l @(12,pc),r0 */
1893 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1894 0x04, 0x70, /* add #4, r0 */
1895 0x2b, 0x41, /* jmp @r1 */
1896 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1897 0x09, 0x00, /* nop */
1898 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1899 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1900 0xc2, 0x60, /* mov.l @r12,r0 */
1901 0x2b, 0x40, /* jmp @r0 */
1902 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1903 0x09, 0x00, /* nop */
1906 static const struct elf_sh_plt_info fdpic_sh_plts[2] = {
1908 /* Big-endian PIC. */
1909 NULL,
1911 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1912 fdpic_sh_plt_entry_be,
1913 FDPIC_PLT_ENTRY_SIZE,
1914 { 12, MINUS_ONE, 16, FALSE },
1915 FDPIC_PLT_LAZY_OFFSET,
1916 NULL
1919 /* Little-endian PIC. */
1920 NULL,
1922 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1923 fdpic_sh_plt_entry_le,
1924 FDPIC_PLT_ENTRY_SIZE,
1925 { 12, MINUS_ONE, 16, FALSE },
1926 FDPIC_PLT_LAZY_OFFSET,
1927 NULL
1931 /* On SH2A, we can use the movi20 instruction to generate shorter PLT
1932 entries for the first 64K slots. We use the normal FDPIC PLT entry
1933 past that point; we could also use movi20s, which might be faster,
1934 but would not be any smaller. */
1936 #define FDPIC_SH2A_PLT_ENTRY_SIZE 24
1937 #define FDPIC_SH2A_PLT_LAZY_OFFSET 16
1939 static const bfd_byte fdpic_sh2a_plt_entry_be[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1941 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1942 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1943 0x70, 0x04, /* add #4, r0 */
1944 0x41, 0x2b, /* jmp @r1 */
1945 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1946 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1947 0x60, 0xc2, /* mov.l @r12,r0 */
1948 0x40, 0x2b, /* jmp @r0 */
1949 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1950 0x00, 0x09, /* nop */
1953 static const bfd_byte fdpic_sh2a_plt_entry_le[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1955 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1956 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1957 0x04, 0x70, /* add #4, r0 */
1958 0x2b, 0x41, /* jmp @r1 */
1959 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1960 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1961 0xc2, 0x60, /* mov.l @r12,r0 */
1962 0x2b, 0x40, /* jmp @r0 */
1963 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1964 0x09, 0x00, /* nop */
1967 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_be = {
1968 /* Big-endian FDPIC, max index 64K. */
1969 NULL,
1971 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1972 fdpic_sh2a_plt_entry_be,
1973 FDPIC_SH2A_PLT_ENTRY_SIZE,
1974 { 0, MINUS_ONE, 12, TRUE },
1975 FDPIC_SH2A_PLT_LAZY_OFFSET,
1976 NULL
1979 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_le = {
1980 /* Little-endian FDPIC, max index 64K. */
1981 NULL,
1983 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1984 fdpic_sh2a_plt_entry_le,
1985 FDPIC_SH2A_PLT_ENTRY_SIZE,
1986 { 0, MINUS_ONE, 12, TRUE },
1987 FDPIC_SH2A_PLT_LAZY_OFFSET,
1988 NULL
1991 static const struct elf_sh_plt_info fdpic_sh2a_plts[2] = {
1993 /* Big-endian PIC. */
1994 NULL,
1996 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1997 fdpic_sh_plt_entry_be,
1998 FDPIC_PLT_ENTRY_SIZE,
1999 { 12, MINUS_ONE, 16, FALSE },
2000 FDPIC_PLT_LAZY_OFFSET,
2001 &fdpic_sh2a_short_plt_be
2004 /* Little-endian PIC. */
2005 NULL,
2007 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
2008 fdpic_sh_plt_entry_le,
2009 FDPIC_PLT_ENTRY_SIZE,
2010 { 12, MINUS_ONE, 16, FALSE },
2011 FDPIC_PLT_LAZY_OFFSET,
2012 &fdpic_sh2a_short_plt_le
2016 /* Return the type of PLT associated with ABFD. PIC_P is true if
2017 the object is position-independent. */
2019 static const struct elf_sh_plt_info *
2020 get_plt_info (bfd *abfd, bfd_boolean pic_p)
2022 if (fdpic_object_p (abfd))
2024 /* If any input file requires SH2A we can use a shorter PLT
2025 sequence. */
2026 if (sh_get_arch_from_bfd_mach (bfd_get_mach (abfd)) & arch_sh2a_base)
2027 return &fdpic_sh2a_plts[!bfd_big_endian (abfd)];
2028 else
2029 return &fdpic_sh_plts[!bfd_big_endian (abfd)];
2031 if (vxworks_object_p (abfd))
2032 return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)];
2033 return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
2036 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2037 VALUE is the field's value and CODE_P is true if VALUE refers to code,
2038 not data. */
2040 inline static void
2041 install_plt_field (bfd *output_bfd, bfd_boolean code_p ATTRIBUTE_UNUSED,
2042 unsigned long value, bfd_byte *addr)
2044 bfd_put_32 (output_bfd, value, addr);
2047 /* The number of PLT entries which can use a shorter PLT, if any.
2048 Currently always 64K, since only SH-2A FDPIC uses this; a
2049 20-bit movi20 can address that many function descriptors below
2050 _GLOBAL_OFFSET_TABLE_. */
2051 #define MAX_SHORT_PLT 65536
2053 /* Return the index of the PLT entry at byte offset OFFSET. */
2055 static bfd_vma
2056 get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset)
2058 bfd_vma plt_index = 0;
2060 offset -= info->plt0_entry_size;
2061 if (info->short_plt != NULL)
2063 if (offset > MAX_SHORT_PLT * info->short_plt->symbol_entry_size)
2065 plt_index = MAX_SHORT_PLT;
2066 offset -= MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2068 else
2069 info = info->short_plt;
2071 return plt_index + offset / info->symbol_entry_size;
2074 /* Do the inverse operation. */
2076 static bfd_vma
2077 get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma plt_index)
2079 bfd_vma offset = 0;
2081 if (info->short_plt != NULL)
2083 if (plt_index > MAX_SHORT_PLT)
2085 offset = MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2086 plt_index -= MAX_SHORT_PLT;
2088 else
2089 info = info->short_plt;
2091 return (offset + info->plt0_entry_size
2092 + (plt_index * info->symbol_entry_size));
2095 union gotref
2097 bfd_signed_vma refcount;
2098 bfd_vma offset;
2101 /* sh ELF linker hash entry. */
2103 struct elf_sh_link_hash_entry
2105 struct elf_link_hash_entry root;
2107 /* Track dynamic relocs copied for this symbol. */
2108 struct elf_dyn_relocs *dyn_relocs;
2110 bfd_signed_vma gotplt_refcount;
2112 /* A local function descriptor, for FDPIC. The refcount counts
2113 R_SH_FUNCDESC, R_SH_GOTOFFFUNCDESC, and R_SH_GOTOFFFUNCDESC20
2114 relocations; the PLT and GOT entry are accounted
2115 for separately. After adjust_dynamic_symbol, the offset is
2116 MINUS_ONE if there is no local descriptor (dynamic linker
2117 managed and no PLT entry, or undefined weak non-dynamic).
2118 During check_relocs we do not yet know whether the local
2119 descriptor will be canonical. */
2120 union gotref funcdesc;
2122 /* How many of the above refcounted relocations were R_SH_FUNCDESC,
2123 and thus require fixups or relocations. */
2124 bfd_signed_vma abs_funcdesc_refcount;
2126 enum got_type {
2127 GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE, GOT_FUNCDESC
2128 } got_type;
2131 #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2133 struct sh_elf_obj_tdata
2135 struct elf_obj_tdata root;
2137 /* got_type for each local got entry. */
2138 char *local_got_type;
2140 /* Function descriptor refcount and offset for each local symbol. */
2141 union gotref *local_funcdesc;
2144 #define sh_elf_tdata(abfd) \
2145 ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2147 #define sh_elf_local_got_type(abfd) \
2148 (sh_elf_tdata (abfd)->local_got_type)
2150 #define sh_elf_local_funcdesc(abfd) \
2151 (sh_elf_tdata (abfd)->local_funcdesc)
2153 #define is_sh_elf(bfd) \
2154 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2155 && elf_tdata (bfd) != NULL \
2156 && elf_object_id (bfd) == SH_ELF_DATA)
2158 /* Override the generic function because we need to store sh_elf_obj_tdata
2159 as the specific tdata. */
2161 static bfd_boolean
2162 sh_elf_mkobject (bfd *abfd)
2164 return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata),
2165 SH_ELF_DATA);
2168 /* sh ELF linker hash table. */
2170 struct elf_sh_link_hash_table
2172 struct elf_link_hash_table root;
2174 /* Short-cuts to get to dynamic linker sections. */
2175 asection *sdynbss;
2176 asection *srelbss;
2177 asection *sfuncdesc;
2178 asection *srelfuncdesc;
2179 asection *srofixup;
2181 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2182 asection *srelplt2;
2184 /* Small local sym cache. */
2185 struct sym_cache sym_cache;
2187 /* A counter or offset to track a TLS got entry. */
2188 union
2190 bfd_signed_vma refcount;
2191 bfd_vma offset;
2192 } tls_ldm_got;
2194 /* The type of PLT to use. */
2195 const struct elf_sh_plt_info *plt_info;
2197 /* True if the target system is VxWorks. */
2198 bfd_boolean vxworks_p;
2200 /* True if the target system uses FDPIC. */
2201 bfd_boolean fdpic_p;
2204 /* Traverse an sh ELF linker hash table. */
2206 #define sh_elf_link_hash_traverse(table, func, info) \
2207 (elf_link_hash_traverse \
2208 (&(table)->root, \
2209 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2210 (info)))
2212 /* Get the sh ELF linker hash table from a link_info structure. */
2214 #define sh_elf_hash_table(p) \
2215 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2216 == SH_ELF_DATA ? ((struct elf_sh_link_hash_table *) ((p)->hash)) : NULL)
2218 /* Create an entry in an sh ELF linker hash table. */
2220 static struct bfd_hash_entry *
2221 sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2222 struct bfd_hash_table *table,
2223 const char *string)
2225 struct elf_sh_link_hash_entry *ret =
2226 (struct elf_sh_link_hash_entry *) entry;
2228 /* Allocate the structure if it has not already been allocated by a
2229 subclass. */
2230 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2231 ret = ((struct elf_sh_link_hash_entry *)
2232 bfd_hash_allocate (table,
2233 sizeof (struct elf_sh_link_hash_entry)));
2234 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2235 return (struct bfd_hash_entry *) ret;
2237 /* Call the allocation method of the superclass. */
2238 ret = ((struct elf_sh_link_hash_entry *)
2239 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2240 table, string));
2241 if (ret != (struct elf_sh_link_hash_entry *) NULL)
2243 ret->dyn_relocs = NULL;
2244 ret->gotplt_refcount = 0;
2245 ret->funcdesc.refcount = 0;
2246 ret->abs_funcdesc_refcount = 0;
2247 ret->got_type = GOT_UNKNOWN;
2250 return (struct bfd_hash_entry *) ret;
2253 /* Create an sh ELF linker hash table. */
2255 static struct bfd_link_hash_table *
2256 sh_elf_link_hash_table_create (bfd *abfd)
2258 struct elf_sh_link_hash_table *ret;
2259 bfd_size_type amt = sizeof (struct elf_sh_link_hash_table);
2261 ret = (struct elf_sh_link_hash_table *) bfd_zmalloc (amt);
2262 if (ret == (struct elf_sh_link_hash_table *) NULL)
2263 return NULL;
2265 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2266 sh_elf_link_hash_newfunc,
2267 sizeof (struct elf_sh_link_hash_entry),
2268 SH_ELF_DATA))
2270 free (ret);
2271 return NULL;
2274 ret->vxworks_p = vxworks_object_p (abfd);
2275 ret->fdpic_p = fdpic_object_p (abfd);
2277 return &ret->root.root;
2280 static bfd_boolean
2281 sh_elf_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2282 struct bfd_link_info *info, asection *p)
2284 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
2286 /* Non-FDPIC binaries do not need dynamic symbols for sections. */
2287 if (!htab->fdpic_p)
2288 return TRUE;
2290 /* We need dynamic symbols for every section, since segments can
2291 relocate independently. */
2292 switch (elf_section_data (p)->this_hdr.sh_type)
2294 case SHT_PROGBITS:
2295 case SHT_NOBITS:
2296 /* If sh_type is yet undecided, assume it could be
2297 SHT_PROGBITS/SHT_NOBITS. */
2298 case SHT_NULL:
2299 return FALSE;
2301 /* There shouldn't be section relative relocations
2302 against any other section. */
2303 default:
2304 return TRUE;
2308 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2309 shortcuts to them in our hash table. */
2311 static bfd_boolean
2312 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2314 struct elf_sh_link_hash_table *htab;
2316 if (! _bfd_elf_create_got_section (dynobj, info))
2317 return FALSE;
2319 htab = sh_elf_hash_table (info);
2320 if (htab == NULL)
2321 return FALSE;
2323 htab->sfuncdesc = bfd_make_section_anyway_with_flags (dynobj, ".got.funcdesc",
2324 (SEC_ALLOC | SEC_LOAD
2325 | SEC_HAS_CONTENTS
2326 | SEC_IN_MEMORY
2327 | SEC_LINKER_CREATED));
2328 if (htab->sfuncdesc == NULL
2329 || !bfd_set_section_alignment (htab->sfuncdesc, 2))
2330 return FALSE;
2332 htab->srelfuncdesc = bfd_make_section_anyway_with_flags (dynobj,
2333 ".rela.got.funcdesc",
2334 (SEC_ALLOC | SEC_LOAD
2335 | SEC_HAS_CONTENTS
2336 | SEC_IN_MEMORY
2337 | SEC_LINKER_CREATED
2338 | SEC_READONLY));
2339 if (htab->srelfuncdesc == NULL
2340 || !bfd_set_section_alignment (htab->srelfuncdesc, 2))
2341 return FALSE;
2343 /* Also create .rofixup. */
2344 htab->srofixup = bfd_make_section_anyway_with_flags (dynobj, ".rofixup",
2345 (SEC_ALLOC | SEC_LOAD
2346 | SEC_HAS_CONTENTS
2347 | SEC_IN_MEMORY
2348 | SEC_LINKER_CREATED
2349 | SEC_READONLY));
2350 if (htab->srofixup == NULL
2351 || !bfd_set_section_alignment (htab->srofixup, 2))
2352 return FALSE;
2354 return TRUE;
2357 /* Create dynamic sections when linking against a dynamic object. */
2359 static bfd_boolean
2360 sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2362 struct elf_sh_link_hash_table *htab;
2363 flagword flags, pltflags;
2364 asection *s;
2365 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2366 int ptralign = 0;
2368 switch (bed->s->arch_size)
2370 case 32:
2371 ptralign = 2;
2372 break;
2374 case 64:
2375 ptralign = 3;
2376 break;
2378 default:
2379 bfd_set_error (bfd_error_bad_value);
2380 return FALSE;
2383 htab = sh_elf_hash_table (info);
2384 if (htab == NULL)
2385 return FALSE;
2387 if (htab->root.dynamic_sections_created)
2388 return TRUE;
2390 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2391 .rel[a].bss sections. */
2393 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2394 | SEC_LINKER_CREATED);
2396 pltflags = flags;
2397 pltflags |= SEC_CODE;
2398 if (bed->plt_not_loaded)
2399 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2400 if (bed->plt_readonly)
2401 pltflags |= SEC_READONLY;
2403 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
2404 htab->root.splt = s;
2405 if (s == NULL
2406 || !bfd_set_section_alignment (s, bed->plt_alignment))
2407 return FALSE;
2409 if (bed->want_plt_sym)
2411 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2412 .plt section. */
2413 struct elf_link_hash_entry *h;
2414 struct bfd_link_hash_entry *bh = NULL;
2416 if (! (_bfd_generic_link_add_one_symbol
2417 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2418 (bfd_vma) 0, (const char *) NULL, FALSE,
2419 get_elf_backend_data (abfd)->collect, &bh)))
2420 return FALSE;
2422 h = (struct elf_link_hash_entry *) bh;
2423 h->def_regular = 1;
2424 h->type = STT_OBJECT;
2425 htab->root.hplt = h;
2427 if (bfd_link_pic (info)
2428 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2429 return FALSE;
2432 s = bfd_make_section_anyway_with_flags (abfd,
2433 bed->default_use_rela_p
2434 ? ".rela.plt" : ".rel.plt",
2435 flags | SEC_READONLY);
2436 htab->root.srelplt = s;
2437 if (s == NULL
2438 || !bfd_set_section_alignment (s, ptralign))
2439 return FALSE;
2441 if (htab->root.sgot == NULL
2442 && !create_got_section (abfd, info))
2443 return FALSE;
2445 if (bed->want_dynbss)
2447 /* The .dynbss section is a place to put symbols which are defined
2448 by dynamic objects, are referenced by regular objects, and are
2449 not functions. We must allocate space for them in the process
2450 image and use a R_*_COPY reloc to tell the dynamic linker to
2451 initialize them at run time. The linker script puts the .dynbss
2452 section into the .bss section of the final image. */
2453 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
2454 SEC_ALLOC | SEC_LINKER_CREATED);
2455 htab->sdynbss = s;
2456 if (s == NULL)
2457 return FALSE;
2459 /* The .rel[a].bss section holds copy relocs. This section is not
2460 normally needed. We need to create it here, though, so that the
2461 linker will map it to an output section. We can't just create it
2462 only if we need it, because we will not know whether we need it
2463 until we have seen all the input files, and the first time the
2464 main linker code calls BFD after examining all the input files
2465 (size_dynamic_sections) the input sections have already been
2466 mapped to the output sections. If the section turns out not to
2467 be needed, we can discard it later. We will never need this
2468 section when generating a shared object, since they do not use
2469 copy relocs. */
2470 if (! bfd_link_pic (info))
2472 s = bfd_make_section_anyway_with_flags (abfd,
2473 (bed->default_use_rela_p
2474 ? ".rela.bss" : ".rel.bss"),
2475 flags | SEC_READONLY);
2476 htab->srelbss = s;
2477 if (s == NULL
2478 || !bfd_set_section_alignment (s, ptralign))
2479 return FALSE;
2483 if (htab->vxworks_p)
2485 if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2486 return FALSE;
2489 return TRUE;
2492 /* Find dynamic relocs for H that apply to read-only sections. */
2494 static asection *
2495 readonly_dynrelocs (struct elf_link_hash_entry *h)
2497 struct elf_dyn_relocs *p;
2499 for (p = sh_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
2501 asection *s = p->sec->output_section;
2503 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2504 return p->sec;
2506 return NULL;
2509 /* Adjust a symbol defined by a dynamic object and referenced by a
2510 regular object. The current definition is in some section of the
2511 dynamic object, but we're not including those sections. We have to
2512 change the definition to something the rest of the link can
2513 understand. */
2515 static bfd_boolean
2516 sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2517 struct elf_link_hash_entry *h)
2519 struct elf_sh_link_hash_table *htab;
2520 asection *s;
2522 htab = sh_elf_hash_table (info);
2523 if (htab == NULL)
2524 return FALSE;
2526 /* Make sure we know what is going on here. */
2527 BFD_ASSERT (htab->root.dynobj != NULL
2528 && (h->needs_plt
2529 || h->is_weakalias
2530 || (h->def_dynamic
2531 && h->ref_regular
2532 && !h->def_regular)));
2534 /* If this is a function, put it in the procedure linkage table. We
2535 will fill in the contents of the procedure linkage table later,
2536 when we know the address of the .got section. */
2537 if (h->type == STT_FUNC
2538 || h->needs_plt)
2540 if (h->plt.refcount <= 0
2541 || SYMBOL_CALLS_LOCAL (info, h)
2542 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2543 && h->root.type == bfd_link_hash_undefweak))
2545 /* This case can occur if we saw a PLT reloc in an input
2546 file, but the symbol was never referred to by a dynamic
2547 object. In such a case, we don't actually need to build
2548 a procedure linkage table, and we can just do a REL32
2549 reloc instead. */
2550 h->plt.offset = (bfd_vma) -1;
2551 h->needs_plt = 0;
2554 return TRUE;
2556 else
2557 h->plt.offset = (bfd_vma) -1;
2559 /* If this is a weak symbol, and there is a real definition, the
2560 processor independent code will have arranged for us to see the
2561 real definition first, and we can just use the same value. */
2562 if (h->is_weakalias)
2564 struct elf_link_hash_entry *def = weakdef (h);
2565 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2566 h->root.u.def.section = def->root.u.def.section;
2567 h->root.u.def.value = def->root.u.def.value;
2568 if (info->nocopyreloc)
2569 h->non_got_ref = def->non_got_ref;
2570 return TRUE;
2573 /* This is a reference to a symbol defined by a dynamic object which
2574 is not a function. */
2576 /* If we are creating a shared library, we must presume that the
2577 only references to the symbol are via the global offset table.
2578 For such cases we need not do anything here; the relocations will
2579 be handled correctly by relocate_section. */
2580 if (bfd_link_pic (info))
2581 return TRUE;
2583 /* If there are no references to this symbol that do not use the
2584 GOT, we don't need to generate a copy reloc. */
2585 if (!h->non_got_ref)
2586 return TRUE;
2588 /* If -z nocopyreloc was given, we won't generate them either. */
2589 if (0 && info->nocopyreloc)
2591 h->non_got_ref = 0;
2592 return TRUE;
2595 /* If we don't find any dynamic relocs in read-only sections, then
2596 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2597 if (0 && !readonly_dynrelocs (h))
2599 h->non_got_ref = 0;
2600 return TRUE;
2603 /* We must allocate the symbol in our .dynbss section, which will
2604 become part of the .bss section of the executable. There will be
2605 an entry for this symbol in the .dynsym section. The dynamic
2606 object will contain position independent code, so all references
2607 from the dynamic object to this symbol will go through the global
2608 offset table. The dynamic linker will use the .dynsym entry to
2609 determine the address it must put in the global offset table, so
2610 both the dynamic object and the regular object will refer to the
2611 same memory location for the variable. */
2613 s = htab->sdynbss;
2614 BFD_ASSERT (s != NULL);
2616 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2617 copy the initial value out of the dynamic object and into the
2618 runtime process image. We need to remember the offset into the
2619 .rela.bss section we are going to use. */
2620 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2622 asection *srel;
2624 srel = htab->srelbss;
2625 BFD_ASSERT (srel != NULL);
2626 srel->size += sizeof (Elf32_External_Rela);
2627 h->needs_copy = 1;
2630 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2633 /* Allocate space in .plt, .got and associated reloc sections for
2634 dynamic relocs. */
2636 static bfd_boolean
2637 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2639 struct bfd_link_info *info;
2640 struct elf_sh_link_hash_table *htab;
2641 struct elf_sh_link_hash_entry *eh;
2642 struct elf_dyn_relocs *p;
2644 if (h->root.type == bfd_link_hash_indirect)
2645 return TRUE;
2647 info = (struct bfd_link_info *) inf;
2648 htab = sh_elf_hash_table (info);
2649 if (htab == NULL)
2650 return FALSE;
2652 eh = (struct elf_sh_link_hash_entry *) h;
2653 if ((h->got.refcount > 0
2654 || h->forced_local)
2655 && eh->gotplt_refcount > 0)
2657 /* The symbol has been forced local, or we have some direct got refs,
2658 so treat all the gotplt refs as got refs. */
2659 h->got.refcount += eh->gotplt_refcount;
2660 if (h->plt.refcount >= eh->gotplt_refcount)
2661 h->plt.refcount -= eh->gotplt_refcount;
2664 if (htab->root.dynamic_sections_created
2665 && h->plt.refcount > 0
2666 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2667 || h->root.type != bfd_link_hash_undefweak))
2669 /* Make sure this symbol is output as a dynamic symbol.
2670 Undefined weak syms won't yet be marked as dynamic. */
2671 if (h->dynindx == -1
2672 && !h->forced_local)
2674 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2675 return FALSE;
2678 if (bfd_link_pic (info)
2679 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2681 asection *s = htab->root.splt;
2682 const struct elf_sh_plt_info *plt_info;
2684 /* If this is the first .plt entry, make room for the special
2685 first entry. */
2686 if (s->size == 0)
2687 s->size += htab->plt_info->plt0_entry_size;
2689 h->plt.offset = s->size;
2691 /* If this symbol is not defined in a regular file, and we are
2692 not generating a shared library, then set the symbol to this
2693 location in the .plt. This is required to make function
2694 pointers compare as equal between the normal executable and
2695 the shared library. Skip this for FDPIC, since the
2696 function's address will be the address of the canonical
2697 function descriptor. */
2698 if (!htab->fdpic_p && !bfd_link_pic (info) && !h->def_regular)
2700 h->root.u.def.section = s;
2701 h->root.u.def.value = h->plt.offset;
2704 /* Make room for this entry. */
2705 plt_info = htab->plt_info;
2706 if (plt_info->short_plt != NULL
2707 && (get_plt_index (plt_info->short_plt, s->size) < MAX_SHORT_PLT))
2708 plt_info = plt_info->short_plt;
2709 s->size += plt_info->symbol_entry_size;
2711 /* We also need to make an entry in the .got.plt section, which
2712 will be placed in the .got section by the linker script. */
2713 if (!htab->fdpic_p)
2714 htab->root.sgotplt->size += 4;
2715 else
2716 htab->root.sgotplt->size += 8;
2718 /* We also need to make an entry in the .rel.plt section. */
2719 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
2721 if (htab->vxworks_p && !bfd_link_pic (info))
2723 /* VxWorks executables have a second set of relocations
2724 for each PLT entry. They go in a separate relocation
2725 section, which is processed by the kernel loader. */
2727 /* There is a relocation for the initial PLT entry:
2728 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2729 if (h->plt.offset == htab->plt_info->plt0_entry_size)
2730 htab->srelplt2->size += sizeof (Elf32_External_Rela);
2732 /* There are two extra relocations for each subsequent
2733 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2734 and an R_SH_DIR32 relocation for the PLT entry. */
2735 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2738 else
2740 h->plt.offset = (bfd_vma) -1;
2741 h->needs_plt = 0;
2744 else
2746 h->plt.offset = (bfd_vma) -1;
2747 h->needs_plt = 0;
2750 if (h->got.refcount > 0)
2752 asection *s;
2753 bfd_boolean dyn;
2754 enum got_type got_type = sh_elf_hash_entry (h)->got_type;
2756 /* Make sure this symbol is output as a dynamic symbol.
2757 Undefined weak syms won't yet be marked as dynamic. */
2758 if (h->dynindx == -1
2759 && !h->forced_local)
2761 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2762 return FALSE;
2765 s = htab->root.sgot;
2766 h->got.offset = s->size;
2767 s->size += 4;
2768 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2769 if (got_type == GOT_TLS_GD)
2770 s->size += 4;
2771 dyn = htab->root.dynamic_sections_created;
2772 if (!dyn)
2774 /* No dynamic relocations required. */
2775 if (htab->fdpic_p && !bfd_link_pic (info)
2776 && h->root.type != bfd_link_hash_undefweak
2777 && (got_type == GOT_NORMAL || got_type == GOT_FUNCDESC))
2778 htab->srofixup->size += 4;
2780 /* No dynamic relocations required when IE->LE conversion happens. */
2781 else if (got_type == GOT_TLS_IE
2782 && !h->def_dynamic
2783 && !bfd_link_pic (info))
2785 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2786 R_SH_TLS_GD needs one if local symbol and two if global. */
2787 else if ((got_type == GOT_TLS_GD && h->dynindx == -1)
2788 || got_type == GOT_TLS_IE)
2789 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2790 else if (got_type == GOT_TLS_GD)
2791 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2792 else if (got_type == GOT_FUNCDESC)
2794 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2795 htab->srofixup->size += 4;
2796 else
2797 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2799 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2800 || h->root.type != bfd_link_hash_undefweak)
2801 && (bfd_link_pic (info)
2802 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2803 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2804 else if (htab->fdpic_p
2805 && !bfd_link_pic (info)
2806 && got_type == GOT_NORMAL
2807 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2808 || h->root.type != bfd_link_hash_undefweak))
2809 htab->srofixup->size += 4;
2811 else
2812 h->got.offset = (bfd_vma) -1;
2814 /* Allocate space for any dynamic relocations to function
2815 descriptors, canonical or otherwise. We need to relocate the
2816 reference unless it resolves to zero, which only happens for
2817 undefined weak symbols (either non-default visibility, or when
2818 static linking). Any GOT slot is accounted for elsewhere. */
2819 if (eh->abs_funcdesc_refcount > 0
2820 && (h->root.type != bfd_link_hash_undefweak
2821 || (htab->root.dynamic_sections_created
2822 && ! SYMBOL_CALLS_LOCAL (info, h))))
2824 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2825 htab->srofixup->size += eh->abs_funcdesc_refcount * 4;
2826 else
2827 htab->root.srelgot->size
2828 += eh->abs_funcdesc_refcount * sizeof (Elf32_External_Rela);
2831 /* We must allocate a function descriptor if there are references to
2832 a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and
2833 the dynamic linker isn't going to allocate it. None of this
2834 applies if we already created one in .got.plt, but if the
2835 canonical function descriptor can be in this object, there
2836 won't be a PLT entry at all. */
2837 if ((eh->funcdesc.refcount > 0
2838 || (h->got.offset != MINUS_ONE && eh->got_type == GOT_FUNCDESC))
2839 && h->root.type != bfd_link_hash_undefweak
2840 && SYMBOL_FUNCDESC_LOCAL (info, h))
2842 /* Make room for this function descriptor. */
2843 eh->funcdesc.offset = htab->sfuncdesc->size;
2844 htab->sfuncdesc->size += 8;
2846 /* We will need a relocation or two fixups to initialize the
2847 function descriptor, so allocate those too. */
2848 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
2849 htab->srofixup->size += 8;
2850 else
2851 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
2854 if (eh->dyn_relocs == NULL)
2855 return TRUE;
2857 /* In the shared -Bsymbolic case, discard space allocated for
2858 dynamic pc-relative relocs against symbols which turn out to be
2859 defined in regular objects. For the normal shared case, discard
2860 space for pc-relative relocs that have become local due to symbol
2861 visibility changes. */
2863 if (bfd_link_pic (info))
2865 if (SYMBOL_CALLS_LOCAL (info, h))
2867 struct elf_dyn_relocs **pp;
2869 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2871 p->count -= p->pc_count;
2872 p->pc_count = 0;
2873 if (p->count == 0)
2874 *pp = p->next;
2875 else
2876 pp = &p->next;
2880 if (htab->vxworks_p)
2882 struct elf_dyn_relocs **pp;
2884 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2886 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2887 *pp = p->next;
2888 else
2889 pp = &p->next;
2893 /* Also discard relocs on undefined weak syms with non-default
2894 visibility. */
2895 if (eh->dyn_relocs != NULL
2896 && h->root.type == bfd_link_hash_undefweak)
2898 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2899 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2900 eh->dyn_relocs = NULL;
2902 /* Make sure undefined weak symbols are output as a dynamic
2903 symbol in PIEs. */
2904 else if (h->dynindx == -1
2905 && !h->forced_local)
2907 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2908 return FALSE;
2912 else
2914 /* For the non-shared case, discard space for relocs against
2915 symbols which turn out to need copy relocs or are not
2916 dynamic. */
2918 if (!h->non_got_ref
2919 && ((h->def_dynamic
2920 && !h->def_regular)
2921 || (htab->root.dynamic_sections_created
2922 && (h->root.type == bfd_link_hash_undefweak
2923 || h->root.type == bfd_link_hash_undefined))))
2925 /* Make sure this symbol is output as a dynamic symbol.
2926 Undefined weak syms won't yet be marked as dynamic. */
2927 if (h->dynindx == -1
2928 && !h->forced_local)
2930 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2931 return FALSE;
2934 /* If that succeeded, we know we'll be keeping all the
2935 relocs. */
2936 if (h->dynindx != -1)
2937 goto keep;
2940 eh->dyn_relocs = NULL;
2942 keep: ;
2945 /* Finally, allocate space. */
2946 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2948 asection *sreloc = elf_section_data (p->sec)->sreloc;
2949 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2951 /* If we need relocations, we do not need fixups. */
2952 if (htab->fdpic_p && !bfd_link_pic (info))
2953 htab->srofixup->size -= 4 * (p->count - p->pc_count);
2956 return TRUE;
2959 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2960 read-only sections. */
2962 static bfd_boolean
2963 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
2965 asection *sec;
2967 if (h->root.type == bfd_link_hash_indirect)
2968 return TRUE;
2970 sec = readonly_dynrelocs (h);
2971 if (sec != NULL)
2973 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
2975 info->flags |= DF_TEXTREL;
2976 info->callbacks->minfo
2977 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
2978 sec->owner, h->root.root.string, sec);
2980 /* Not an error, just cut short the traversal. */
2981 return FALSE;
2983 return TRUE;
2986 /* This function is called after all the input files have been read,
2987 and the input sections have been assigned to output sections.
2988 It's a convenient place to determine the PLT style. */
2990 static bfd_boolean
2991 sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2993 sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd,
2994 bfd_link_pic (info));
2996 if (sh_elf_hash_table (info)->fdpic_p && !bfd_link_relocatable (info)
2997 && !bfd_elf_stack_segment_size (output_bfd, info,
2998 "__stacksize", DEFAULT_STACK_SIZE))
2999 return FALSE;
3000 return TRUE;
3003 /* Set the sizes of the dynamic sections. */
3005 static bfd_boolean
3006 sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3007 struct bfd_link_info *info)
3009 struct elf_sh_link_hash_table *htab;
3010 bfd *dynobj;
3011 asection *s;
3012 bfd_boolean relocs;
3013 bfd *ibfd;
3015 htab = sh_elf_hash_table (info);
3016 if (htab == NULL)
3017 return FALSE;
3019 dynobj = htab->root.dynobj;
3020 BFD_ASSERT (dynobj != NULL);
3022 if (htab->root.dynamic_sections_created)
3024 /* Set the contents of the .interp section to the interpreter. */
3025 if (bfd_link_executable (info) && !info->nointerp)
3027 s = bfd_get_linker_section (dynobj, ".interp");
3028 BFD_ASSERT (s != NULL);
3029 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3030 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3034 /* Set up .got offsets for local syms, and space for local dynamic
3035 relocs. */
3036 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
3038 bfd_signed_vma *local_got;
3039 bfd_signed_vma *end_local_got;
3040 union gotref *local_funcdesc, *end_local_funcdesc;
3041 char *local_got_type;
3042 bfd_size_type locsymcount;
3043 Elf_Internal_Shdr *symtab_hdr;
3044 asection *srel;
3046 if (! is_sh_elf (ibfd))
3047 continue;
3049 for (s = ibfd->sections; s != NULL; s = s->next)
3051 struct elf_dyn_relocs *p;
3053 for (p = ((struct elf_dyn_relocs *)
3054 elf_section_data (s)->local_dynrel);
3055 p != NULL;
3056 p = p->next)
3058 if (! bfd_is_abs_section (p->sec)
3059 && bfd_is_abs_section (p->sec->output_section))
3061 /* Input section has been discarded, either because
3062 it is a copy of a linkonce section or due to
3063 linker script /DISCARD/, so we'll be discarding
3064 the relocs too. */
3066 else if (htab->vxworks_p
3067 && strcmp (p->sec->output_section->name,
3068 ".tls_vars") == 0)
3070 /* Relocations in vxworks .tls_vars sections are
3071 handled specially by the loader. */
3073 else if (p->count != 0)
3075 srel = elf_section_data (p->sec)->sreloc;
3076 srel->size += p->count * sizeof (Elf32_External_Rela);
3077 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3079 info->flags |= DF_TEXTREL;
3080 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
3081 p->sec->owner, p->sec);
3084 /* If we need relocations, we do not need fixups. */
3085 if (htab->fdpic_p && !bfd_link_pic (info))
3086 htab->srofixup->size -= 4 * (p->count - p->pc_count);
3091 symtab_hdr = &elf_symtab_hdr (ibfd);
3092 locsymcount = symtab_hdr->sh_info;
3093 s = htab->root.sgot;
3094 srel = htab->root.srelgot;
3096 local_got = elf_local_got_refcounts (ibfd);
3097 if (local_got)
3099 end_local_got = local_got + locsymcount;
3100 local_got_type = sh_elf_local_got_type (ibfd);
3101 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3102 for (; local_got < end_local_got; ++local_got)
3104 if (*local_got > 0)
3106 *local_got = s->size;
3107 s->size += 4;
3108 if (*local_got_type == GOT_TLS_GD)
3109 s->size += 4;
3110 if (bfd_link_pic (info))
3111 srel->size += sizeof (Elf32_External_Rela);
3112 else
3113 htab->srofixup->size += 4;
3115 if (*local_got_type == GOT_FUNCDESC)
3117 if (local_funcdesc == NULL)
3119 bfd_size_type size;
3121 size = locsymcount * sizeof (union gotref);
3122 local_funcdesc = (union gotref *) bfd_zalloc (ibfd,
3123 size);
3124 if (local_funcdesc == NULL)
3125 return FALSE;
3126 sh_elf_local_funcdesc (ibfd) = local_funcdesc;
3127 local_funcdesc += (local_got
3128 - elf_local_got_refcounts (ibfd));
3130 local_funcdesc->refcount++;
3131 ++local_funcdesc;
3134 else
3135 *local_got = (bfd_vma) -1;
3136 ++local_got_type;
3140 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3141 if (local_funcdesc)
3143 end_local_funcdesc = local_funcdesc + locsymcount;
3145 for (; local_funcdesc < end_local_funcdesc; ++local_funcdesc)
3147 if (local_funcdesc->refcount > 0)
3149 local_funcdesc->offset = htab->sfuncdesc->size;
3150 htab->sfuncdesc->size += 8;
3151 if (!bfd_link_pic (info))
3152 htab->srofixup->size += 8;
3153 else
3154 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
3156 else
3157 local_funcdesc->offset = MINUS_ONE;
3163 if (htab->tls_ldm_got.refcount > 0)
3165 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3166 relocs. */
3167 htab->tls_ldm_got.offset = htab->root.sgot->size;
3168 htab->root.sgot->size += 8;
3169 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
3171 else
3172 htab->tls_ldm_got.offset = -1;
3174 /* Only the reserved entries should be present. For FDPIC, they go at
3175 the end of .got.plt. */
3176 if (htab->fdpic_p)
3178 BFD_ASSERT (htab->root.sgotplt && htab->root.sgotplt->size == 12);
3179 htab->root.sgotplt->size = 0;
3182 /* Allocate global sym .plt and .got entries, and space for global
3183 sym dynamic relocs. */
3184 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3186 /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
3187 end of the FDPIC .got.plt. */
3188 if (htab->fdpic_p)
3190 htab->root.hgot->root.u.def.value = htab->root.sgotplt->size;
3191 htab->root.sgotplt->size += 12;
3194 /* At the very end of the .rofixup section is a pointer to the GOT. */
3195 if (htab->fdpic_p && htab->srofixup != NULL)
3196 htab->srofixup->size += 4;
3198 /* We now have determined the sizes of the various dynamic sections.
3199 Allocate memory for them. */
3200 relocs = FALSE;
3201 for (s = dynobj->sections; s != NULL; s = s->next)
3203 if ((s->flags & SEC_LINKER_CREATED) == 0)
3204 continue;
3206 if (s == htab->root.splt
3207 || s == htab->root.sgot
3208 || s == htab->root.sgotplt
3209 || s == htab->sfuncdesc
3210 || s == htab->srofixup
3211 || s == htab->sdynbss)
3213 /* Strip this section if we don't need it; see the
3214 comment below. */
3216 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
3218 if (s->size != 0 && s != htab->root.srelplt && s != htab->srelplt2)
3219 relocs = TRUE;
3221 /* We use the reloc_count field as a counter if we need
3222 to copy relocs into the output file. */
3223 s->reloc_count = 0;
3225 else
3227 /* It's not one of our sections, so don't allocate space. */
3228 continue;
3231 if (s->size == 0)
3233 /* If we don't need this section, strip it from the
3234 output file. This is mostly to handle .rela.bss and
3235 .rela.plt. We must create both sections in
3236 create_dynamic_sections, because they must be created
3237 before the linker maps input sections to output
3238 sections. The linker does that before
3239 adjust_dynamic_symbol is called, and it is that
3240 function which decides whether anything needs to go
3241 into these sections. */
3243 s->flags |= SEC_EXCLUDE;
3244 continue;
3247 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3248 continue;
3250 /* Allocate memory for the section contents. We use bfd_zalloc
3251 here in case unused entries are not reclaimed before the
3252 section's contents are written out. This should not happen,
3253 but this way if it does, we get a R_SH_NONE reloc instead
3254 of garbage. */
3255 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3256 if (s->contents == NULL)
3257 return FALSE;
3260 if (htab->root.dynamic_sections_created)
3262 /* Add some entries to the .dynamic section. We fill in the
3263 values later, in sh_elf_finish_dynamic_sections, but we
3264 must add the entries now so that we get the correct size for
3265 the .dynamic section. The DT_DEBUG entry is filled in by the
3266 dynamic linker and used by the debugger. */
3267 #define add_dynamic_entry(TAG, VAL) \
3268 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3270 if (bfd_link_executable (info))
3272 if (! add_dynamic_entry (DT_DEBUG, 0))
3273 return FALSE;
3276 if (htab->root.splt->size != 0)
3278 if (! add_dynamic_entry (DT_PLTGOT, 0)
3279 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
3280 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
3281 || ! add_dynamic_entry (DT_JMPREL, 0))
3282 return FALSE;
3284 else if ((elf_elfheader (output_bfd)->e_flags & EF_SH_FDPIC))
3286 if (! add_dynamic_entry (DT_PLTGOT, 0))
3287 return FALSE;
3290 if (relocs)
3292 if (! add_dynamic_entry (DT_RELA, 0)
3293 || ! add_dynamic_entry (DT_RELASZ, 0)
3294 || ! add_dynamic_entry (DT_RELAENT,
3295 sizeof (Elf32_External_Rela)))
3296 return FALSE;
3298 /* If any dynamic relocs apply to a read-only section,
3299 then we need a DT_TEXTREL entry. */
3300 if ((info->flags & DF_TEXTREL) == 0)
3301 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info);
3303 if ((info->flags & DF_TEXTREL) != 0)
3305 if (! add_dynamic_entry (DT_TEXTREL, 0))
3306 return FALSE;
3309 if (htab->vxworks_p
3310 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3311 return FALSE;
3313 #undef add_dynamic_entry
3315 return TRUE;
3318 /* Add a dynamic relocation to the SRELOC section. */
3320 inline static bfd_vma
3321 sh_elf_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
3322 int reloc_type, long dynindx, bfd_vma addend)
3324 Elf_Internal_Rela outrel;
3325 bfd_vma reloc_offset;
3327 outrel.r_offset = offset;
3328 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
3329 outrel.r_addend = addend;
3331 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rela);
3332 BFD_ASSERT (reloc_offset < sreloc->size);
3333 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3334 sreloc->contents + reloc_offset);
3335 sreloc->reloc_count++;
3337 return reloc_offset;
3340 /* Add an FDPIC read-only fixup. */
3342 inline static void
3343 sh_elf_add_rofixup (bfd *output_bfd, asection *srofixup, bfd_vma offset)
3345 bfd_vma fixup_offset;
3347 fixup_offset = srofixup->reloc_count++ * 4;
3348 BFD_ASSERT (fixup_offset < srofixup->size);
3349 bfd_put_32 (output_bfd, offset, srofixup->contents + fixup_offset);
3352 /* Return the offset of the generated .got section from the
3353 _GLOBAL_OFFSET_TABLE_ symbol. */
3355 static bfd_signed_vma
3356 sh_elf_got_offset (struct elf_sh_link_hash_table *htab)
3358 return (htab->root.sgot->output_offset - htab->root.sgotplt->output_offset
3359 - htab->root.hgot->root.u.def.value);
3362 /* Find the segment number in which OSEC, and output section, is
3363 located. */
3365 static unsigned
3366 sh_elf_osec_to_segment (bfd *output_bfd, asection *osec)
3368 Elf_Internal_Phdr *p = NULL;
3370 if (output_bfd->xvec->flavour == bfd_target_elf_flavour
3371 /* PR ld/17110: Do not look for output segments in an input bfd. */
3372 && output_bfd->direction != read_direction)
3373 p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
3375 /* FIXME: Nothing ever says what this index is relative to. The kernel
3376 supplies data in terms of the number of load segments but this is
3377 a phdr index and the first phdr may not be a load segment. */
3378 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
3381 static bfd_boolean
3382 sh_elf_osec_readonly_p (bfd *output_bfd, asection *osec)
3384 unsigned seg = sh_elf_osec_to_segment (output_bfd, osec);
3386 return (seg != (unsigned) -1
3387 && ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W));
3390 /* Generate the initial contents of a local function descriptor, along
3391 with any relocations or fixups required. */
3392 static bfd_boolean
3393 sh_elf_initialize_funcdesc (bfd *output_bfd,
3394 struct bfd_link_info *info,
3395 struct elf_link_hash_entry *h,
3396 bfd_vma offset,
3397 asection *section,
3398 bfd_vma value)
3400 struct elf_sh_link_hash_table *htab;
3401 int dynindx;
3402 bfd_vma addr, seg;
3404 htab = sh_elf_hash_table (info);
3406 /* FIXME: The ABI says that the offset to the function goes in the
3407 descriptor, along with the segment index. We're RELA, so it could
3408 go in the reloc instead... */
3410 if (h != NULL && SYMBOL_CALLS_LOCAL (info, h))
3412 section = h->root.u.def.section;
3413 value = h->root.u.def.value;
3416 if (h == NULL || SYMBOL_CALLS_LOCAL (info, h))
3418 dynindx = elf_section_data (section->output_section)->dynindx;
3419 addr = value + section->output_offset;
3420 seg = sh_elf_osec_to_segment (output_bfd, section->output_section);
3422 else
3424 BFD_ASSERT (h->dynindx != -1);
3425 dynindx = h->dynindx;
3426 addr = seg = 0;
3429 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
3431 if (h == NULL || h->root.type != bfd_link_hash_undefweak)
3433 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3434 offset
3435 + htab->sfuncdesc->output_section->vma
3436 + htab->sfuncdesc->output_offset);
3437 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3438 offset + 4
3439 + htab->sfuncdesc->output_section->vma
3440 + htab->sfuncdesc->output_offset);
3443 /* There are no dynamic relocations so fill in the final
3444 address and gp value (barring fixups). */
3445 addr += section->output_section->vma;
3446 seg = htab->root.hgot->root.u.def.value
3447 + htab->root.hgot->root.u.def.section->output_section->vma
3448 + htab->root.hgot->root.u.def.section->output_offset;
3450 else
3451 sh_elf_add_dyn_reloc (output_bfd, htab->srelfuncdesc,
3452 offset
3453 + htab->sfuncdesc->output_section->vma
3454 + htab->sfuncdesc->output_offset,
3455 R_SH_FUNCDESC_VALUE, dynindx, 0);
3457 bfd_put_32 (output_bfd, addr, htab->sfuncdesc->contents + offset);
3458 bfd_put_32 (output_bfd, seg, htab->sfuncdesc->contents + offset + 4);
3460 return TRUE;
3463 /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
3464 VALUE is the field's value. Return bfd_reloc_ok if successful or an error
3465 otherwise. */
3467 static bfd_reloc_status_type
3468 install_movi20_field (bfd *output_bfd, unsigned long relocation,
3469 bfd *input_bfd, asection *input_section,
3470 bfd_byte *contents, bfd_vma offset)
3472 unsigned long cur_val;
3473 bfd_byte *addr;
3474 bfd_reloc_status_type r;
3476 if (offset > bfd_get_section_limit (input_bfd, input_section))
3477 return bfd_reloc_outofrange;
3479 r = bfd_check_overflow (complain_overflow_signed, 20, 0,
3480 bfd_arch_bits_per_address (input_bfd), relocation);
3481 if (r != bfd_reloc_ok)
3482 return r;
3484 addr = contents + offset;
3485 cur_val = bfd_get_16 (output_bfd, addr);
3486 bfd_put_16 (output_bfd, cur_val | ((relocation & 0xf0000) >> 12), addr);
3487 bfd_put_16 (output_bfd, relocation & 0xffff, addr + 2);
3489 return bfd_reloc_ok;
3492 /* Relocate an SH ELF section. */
3494 static bfd_boolean
3495 sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3496 bfd *input_bfd, asection *input_section,
3497 bfd_byte *contents, Elf_Internal_Rela *relocs,
3498 Elf_Internal_Sym *local_syms,
3499 asection **local_sections)
3501 struct elf_sh_link_hash_table *htab;
3502 Elf_Internal_Shdr *symtab_hdr;
3503 struct elf_link_hash_entry **sym_hashes;
3504 Elf_Internal_Rela *rel, *relend;
3505 bfd_vma *local_got_offsets;
3506 asection *sgot = NULL;
3507 asection *sgotplt = NULL;
3508 asection *splt = NULL;
3509 asection *sreloc = NULL;
3510 asection *srelgot = NULL;
3511 bfd_boolean is_vxworks_tls;
3512 unsigned isec_segment, got_segment, plt_segment, check_segment[2];
3513 bfd_boolean fdpic_p = FALSE;
3515 if (!is_sh_elf (input_bfd))
3517 bfd_set_error (bfd_error_wrong_format);
3518 return FALSE;
3521 htab = sh_elf_hash_table (info);
3522 if (htab != NULL)
3524 sgot = htab->root.sgot;
3525 sgotplt = htab->root.sgotplt;
3526 srelgot = htab->root.srelgot;
3527 splt = htab->root.splt;
3528 fdpic_p = htab->fdpic_p;
3530 symtab_hdr = &elf_symtab_hdr (input_bfd);
3531 sym_hashes = elf_sym_hashes (input_bfd);
3532 local_got_offsets = elf_local_got_offsets (input_bfd);
3534 isec_segment = sh_elf_osec_to_segment (output_bfd,
3535 input_section->output_section);
3536 if (fdpic_p && sgot)
3537 got_segment = sh_elf_osec_to_segment (output_bfd,
3538 sgot->output_section);
3539 else
3540 got_segment = -1;
3541 if (fdpic_p && splt)
3542 plt_segment = sh_elf_osec_to_segment (output_bfd,
3543 splt->output_section);
3544 else
3545 plt_segment = -1;
3547 /* We have to handle relocations in vxworks .tls_vars sections
3548 specially, because the dynamic loader is 'weird'. */
3549 is_vxworks_tls = (htab && htab->vxworks_p && bfd_link_pic (info)
3550 && !strcmp (input_section->output_section->name,
3551 ".tls_vars"));
3553 rel = relocs;
3554 relend = relocs + input_section->reloc_count;
3555 for (; rel < relend; rel++)
3557 int r_type;
3558 reloc_howto_type *howto;
3559 unsigned long r_symndx;
3560 Elf_Internal_Sym *sym;
3561 asection *sec;
3562 struct elf_link_hash_entry *h;
3563 bfd_vma relocation;
3564 bfd_vma addend = (bfd_vma) 0;
3565 bfd_reloc_status_type r;
3566 int seen_stt_datalabel = 0;
3567 bfd_vma off;
3568 enum got_type got_type;
3569 const char *symname = NULL;
3570 bfd_boolean resolved_to_zero;
3572 r_symndx = ELF32_R_SYM (rel->r_info);
3574 r_type = ELF32_R_TYPE (rel->r_info);
3576 /* Many of the relocs are only used for relaxing, and are
3577 handled entirely by the relaxation code. */
3578 if (r_type >= (int) R_SH_GNU_VTINHERIT
3579 && r_type <= (int) R_SH_LABEL)
3580 continue;
3581 if (r_type == (int) R_SH_NONE)
3582 continue;
3584 if (r_type < 0
3585 || r_type >= R_SH_max
3586 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3587 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3588 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3589 && r_type <= (int) R_SH_LAST_INVALID_RELOC_2)
3590 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3591 && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3592 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3593 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3594 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3595 && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3596 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_6
3597 && r_type <= (int) R_SH_LAST_INVALID_RELOC_6))
3599 bfd_set_error (bfd_error_bad_value);
3600 return FALSE;
3603 howto = get_howto_table (output_bfd) + r_type;
3605 /* For relocs that aren't partial_inplace, we get the addend from
3606 the relocation. */
3607 if (! howto->partial_inplace)
3608 addend = rel->r_addend;
3610 resolved_to_zero = FALSE;
3611 h = NULL;
3612 sym = NULL;
3613 sec = NULL;
3614 check_segment[0] = -1;
3615 check_segment[1] = -1;
3616 if (r_symndx < symtab_hdr->sh_info)
3618 sym = local_syms + r_symndx;
3619 sec = local_sections[r_symndx];
3621 symname = bfd_elf_string_from_elf_section
3622 (input_bfd, symtab_hdr->sh_link, sym->st_name);
3623 if (symname == NULL || *symname == '\0')
3624 symname = bfd_section_name (sec);
3626 relocation = (sec->output_section->vma
3627 + sec->output_offset
3628 + sym->st_value);
3629 /* A local symbol never has STO_SH5_ISA32, so we don't need
3630 datalabel processing here. Make sure this does not change
3631 without notice. */
3632 if ((sym->st_other & STO_SH5_ISA32) != 0)
3633 (*info->callbacks->reloc_dangerous)
3634 (info,
3635 _("unexpected STO_SH5_ISA32 on local symbol is not handled"),
3636 input_bfd, input_section, rel->r_offset);
3638 if (sec != NULL && discarded_section (sec))
3639 /* Handled below. */
3641 else if (bfd_link_relocatable (info))
3643 /* This is a relocatable link. We don't have to change
3644 anything, unless the reloc is against a section symbol,
3645 in which case we have to adjust according to where the
3646 section symbol winds up in the output section. */
3647 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3649 if (! howto->partial_inplace)
3651 /* For relocations with the addend in the
3652 relocation, we need just to update the addend.
3653 All real relocs are of type partial_inplace; this
3654 code is mostly for completeness. */
3655 rel->r_addend += sec->output_offset;
3657 continue;
3660 /* Relocs of type partial_inplace need to pick up the
3661 contents in the contents and add the offset resulting
3662 from the changed location of the section symbol.
3663 Using _bfd_final_link_relocate (e.g. goto
3664 final_link_relocate) here would be wrong, because
3665 relocations marked pc_relative would get the current
3666 location subtracted, and we must only do that at the
3667 final link. */
3668 r = _bfd_relocate_contents (howto, input_bfd,
3669 sec->output_offset
3670 + sym->st_value,
3671 contents + rel->r_offset);
3672 goto relocation_done;
3675 continue;
3677 else if (! howto->partial_inplace)
3679 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3680 addend = rel->r_addend;
3682 else if ((sec->flags & SEC_MERGE)
3683 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3685 asection *msec;
3687 if (howto->rightshift || howto->src_mask != 0xffffffff)
3689 _bfd_error_handler
3690 /* xgettext:c-format */
3691 (_("%pB(%pA+%#" PRIx64 "): "
3692 "%s relocation against SEC_MERGE section"),
3693 input_bfd, input_section,
3694 (uint64_t) rel->r_offset, howto->name);
3695 return FALSE;
3698 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3699 msec = sec;
3700 addend =
3701 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3702 - relocation;
3703 addend += msec->output_section->vma + msec->output_offset;
3704 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3705 addend = 0;
3708 else
3710 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3712 relocation = 0;
3713 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3714 symname = h->root.root.string;
3715 while (h->root.type == bfd_link_hash_indirect
3716 || h->root.type == bfd_link_hash_warning)
3717 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3718 if (h->root.type == bfd_link_hash_defined
3719 || h->root.type == bfd_link_hash_defweak)
3721 bfd_boolean dyn;
3723 dyn = htab ? htab->root.dynamic_sections_created : FALSE;
3724 sec = h->root.u.def.section;
3725 /* In these cases, we don't need the relocation value.
3726 We check specially because in some obscure cases
3727 sec->output_section will be NULL. */
3728 if (r_type == R_SH_GOTPC
3729 || r_type == R_SH_GOTPC_LOW16
3730 || r_type == R_SH_GOTPC_MEDLOW16
3731 || r_type == R_SH_GOTPC_MEDHI16
3732 || r_type == R_SH_GOTPC_HI16
3733 || ((r_type == R_SH_PLT32
3734 || r_type == R_SH_PLT_LOW16
3735 || r_type == R_SH_PLT_MEDLOW16
3736 || r_type == R_SH_PLT_MEDHI16
3737 || r_type == R_SH_PLT_HI16)
3738 && h->plt.offset != (bfd_vma) -1)
3739 || ((r_type == R_SH_GOT32
3740 || r_type == R_SH_GOT20
3741 || r_type == R_SH_GOTFUNCDESC
3742 || r_type == R_SH_GOTFUNCDESC20
3743 || r_type == R_SH_GOTOFFFUNCDESC
3744 || r_type == R_SH_GOTOFFFUNCDESC20
3745 || r_type == R_SH_FUNCDESC
3746 || r_type == R_SH_GOT_LOW16
3747 || r_type == R_SH_GOT_MEDLOW16
3748 || r_type == R_SH_GOT_MEDHI16
3749 || r_type == R_SH_GOT_HI16)
3750 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3751 bfd_link_pic (info),
3753 && (! bfd_link_pic (info)
3754 || (! info->symbolic && h->dynindx != -1)
3755 || !h->def_regular))
3756 /* The cases above are those in which relocation is
3757 overwritten in the switch block below. The cases
3758 below are those in which we must defer relocation
3759 to run-time, because we can't resolve absolute
3760 addresses when creating a shared library. */
3761 || (bfd_link_pic (info)
3762 && ((! info->symbolic && h->dynindx != -1)
3763 || !h->def_regular)
3764 && ((r_type == R_SH_DIR32
3765 && !h->forced_local)
3766 || (r_type == R_SH_REL32
3767 && !SYMBOL_CALLS_LOCAL (info, h)))
3768 && ((input_section->flags & SEC_ALLOC) != 0
3769 /* DWARF will emit R_SH_DIR32 relocations in its
3770 sections against symbols defined externally
3771 in shared libraries. We can't do anything
3772 with them here. */
3773 || ((input_section->flags & SEC_DEBUGGING) != 0
3774 && h->def_dynamic)))
3775 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3776 sections because such sections are not SEC_ALLOC and
3777 thus ld.so will not process them. */
3778 || (sec->output_section == NULL
3779 && ((input_section->flags & SEC_DEBUGGING) != 0
3780 && h->def_dynamic))
3781 || (sec->output_section == NULL
3782 && (sh_elf_hash_entry (h)->got_type == GOT_TLS_IE
3783 || sh_elf_hash_entry (h)->got_type == GOT_TLS_GD)))
3785 else if (sec->output_section != NULL)
3786 relocation = ((h->root.u.def.value
3787 + sec->output_section->vma
3788 + sec->output_offset)
3789 /* A STO_SH5_ISA32 causes a "bitor 1" to the
3790 symbol value, unless we've seen
3791 STT_DATALABEL on the way to it. */
3792 | ((h->other & STO_SH5_ISA32) != 0
3793 && ! seen_stt_datalabel));
3794 else if (!bfd_link_relocatable (info)
3795 && (_bfd_elf_section_offset (output_bfd, info,
3796 input_section,
3797 rel->r_offset)
3798 != (bfd_vma) -1))
3800 _bfd_error_handler
3801 /* xgettext:c-format */
3802 (_("%pB(%pA+%#" PRIx64 "): "
3803 "unresolvable %s relocation against symbol `%s'"),
3804 input_bfd,
3805 input_section,
3806 (uint64_t) rel->r_offset,
3807 howto->name,
3808 h->root.root.string);
3809 return FALSE;
3812 else if (h->root.type == bfd_link_hash_undefweak)
3813 resolved_to_zero = UNDEFWEAK_NO_DYNAMIC_RELOC (info, h);
3814 else if (info->unresolved_syms_in_objects == RM_IGNORE
3815 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3817 else if (!bfd_link_relocatable (info))
3818 (*info->callbacks->undefined_symbol)
3819 (info, h->root.root.string, input_bfd,
3820 input_section, rel->r_offset,
3821 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
3822 || ELF_ST_VISIBILITY (h->other)));
3825 if (sec != NULL && discarded_section (sec))
3826 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3827 rel, 1, relend, howto, 0, contents);
3829 if (bfd_link_relocatable (info))
3830 continue;
3832 /* Check for inter-segment relocations in FDPIC files. Most
3833 relocations connect the relocation site to the location of
3834 the target symbol, but there are some exceptions below. */
3835 check_segment[0] = isec_segment;
3836 if (sec != NULL)
3837 check_segment[1] = sh_elf_osec_to_segment (output_bfd,
3838 sec->output_section);
3839 else
3840 check_segment[1] = -1;
3842 switch ((int) r_type)
3844 final_link_relocate:
3845 /* COFF relocs don't use the addend. The addend is used for
3846 R_SH_DIR32 to be compatible with other compilers. */
3847 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3848 contents, rel->r_offset,
3849 relocation, addend);
3850 break;
3852 case R_SH_IND12W:
3853 goto final_link_relocate;
3855 case R_SH_DIR8WPN:
3856 case R_SH_DIR8WPZ:
3857 case R_SH_DIR8WPL:
3858 /* If the reloc is against the start of this section, then
3859 the assembler has already taken care of it and the reloc
3860 is here only to assist in relaxing. If the reloc is not
3861 against the start of this section, then it's against an
3862 external symbol and we must deal with it ourselves. */
3863 if (input_section->output_section->vma + input_section->output_offset
3864 != relocation)
3866 int disp = (relocation
3867 - input_section->output_section->vma
3868 - input_section->output_offset
3869 - rel->r_offset);
3870 int mask = 0;
3871 switch (r_type)
3873 case R_SH_DIR8WPN:
3874 case R_SH_DIR8WPZ: mask = 1; break;
3875 case R_SH_DIR8WPL: mask = 3; break;
3876 default: mask = 0; break;
3878 if (disp & mask)
3880 _bfd_error_handler
3881 /* xgettext:c-format */
3882 (_("%pB: %#" PRIx64 ": fatal: "
3883 "unaligned branch target for relax-support relocation"),
3884 input_section->owner,
3885 (uint64_t) rel->r_offset);
3886 bfd_set_error (bfd_error_bad_value);
3887 return FALSE;
3889 relocation -= 4;
3890 goto final_link_relocate;
3892 r = bfd_reloc_ok;
3893 break;
3895 default:
3896 bfd_set_error (bfd_error_bad_value);
3897 return FALSE;
3899 case R_SH_DIR16:
3900 case R_SH_DIR8:
3901 case R_SH_DIR8U:
3902 case R_SH_DIR8S:
3903 case R_SH_DIR4U:
3904 goto final_link_relocate;
3906 case R_SH_DIR8UL:
3907 case R_SH_DIR4UL:
3908 if (relocation & 3)
3910 _bfd_error_handler
3911 /* xgettext:c-format */
3912 (_("%pB: %#" PRIx64 ": fatal: "
3913 "unaligned %s relocation %#" PRIx64),
3914 input_section->owner, (uint64_t) rel->r_offset,
3915 howto->name, (uint64_t) relocation);
3916 bfd_set_error (bfd_error_bad_value);
3917 return FALSE;
3919 goto final_link_relocate;
3921 case R_SH_DIR8UW:
3922 case R_SH_DIR8SW:
3923 case R_SH_DIR4UW:
3924 if (relocation & 1)
3926 _bfd_error_handler
3927 /* xgettext:c-format */
3928 (_("%pB: %#" PRIx64 ": fatal: "
3929 "unaligned %s relocation %#" PRIx64 ""),
3930 input_section->owner,
3931 (uint64_t) rel->r_offset, howto->name,
3932 (uint64_t) relocation);
3933 bfd_set_error (bfd_error_bad_value);
3934 return FALSE;
3936 goto final_link_relocate;
3938 case R_SH_PSHA:
3939 if ((signed int)relocation < -32
3940 || (signed int)relocation > 32)
3942 _bfd_error_handler
3943 /* xgettext:c-format */
3944 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHA relocation %" PRId64
3945 " not in range -32..32"),
3946 input_section->owner,
3947 (uint64_t) rel->r_offset,
3948 (int64_t) relocation);
3949 bfd_set_error (bfd_error_bad_value);
3950 return FALSE;
3952 goto final_link_relocate;
3954 case R_SH_PSHL:
3955 if ((signed int)relocation < -16
3956 || (signed int)relocation > 16)
3958 _bfd_error_handler
3959 /* xgettext:c-format */
3960 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHL relocation %" PRId64
3961 " not in range -32..32"),
3962 input_section->owner,
3963 (uint64_t) rel->r_offset,
3964 (int64_t) relocation);
3965 bfd_set_error (bfd_error_bad_value);
3966 return FALSE;
3968 goto final_link_relocate;
3970 case R_SH_DIR32:
3971 case R_SH_REL32:
3972 if (bfd_link_pic (info)
3973 && (h == NULL
3974 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3975 && !resolved_to_zero)
3976 || h->root.type != bfd_link_hash_undefweak)
3977 && r_symndx != STN_UNDEF
3978 && (input_section->flags & SEC_ALLOC) != 0
3979 && !is_vxworks_tls
3980 && (r_type == R_SH_DIR32
3981 || !SYMBOL_CALLS_LOCAL (info, h)))
3983 Elf_Internal_Rela outrel;
3984 bfd_byte *loc;
3985 bfd_boolean skip, relocate;
3987 /* When generating a shared object, these relocations
3988 are copied into the output file to be resolved at run
3989 time. */
3991 if (sreloc == NULL)
3993 sreloc = _bfd_elf_get_dynamic_reloc_section
3994 (input_bfd, input_section, /*rela?*/ TRUE);
3995 if (sreloc == NULL)
3996 return FALSE;
3999 skip = FALSE;
4000 relocate = FALSE;
4002 outrel.r_offset =
4003 _bfd_elf_section_offset (output_bfd, info, input_section,
4004 rel->r_offset);
4005 if (outrel.r_offset == (bfd_vma) -1)
4006 skip = TRUE;
4007 else if (outrel.r_offset == (bfd_vma) -2)
4008 skip = TRUE, relocate = TRUE;
4009 outrel.r_offset += (input_section->output_section->vma
4010 + input_section->output_offset);
4012 if (skip)
4013 memset (&outrel, 0, sizeof outrel);
4014 else if (r_type == R_SH_REL32)
4016 BFD_ASSERT (h != NULL && h->dynindx != -1);
4017 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
4018 outrel.r_addend
4019 = (howto->partial_inplace
4020 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
4021 : addend);
4023 else if (fdpic_p
4024 && (h == NULL
4025 || ((info->symbolic || h->dynindx == -1)
4026 && h->def_regular)))
4028 int dynindx;
4030 BFD_ASSERT (sec != NULL);
4031 BFD_ASSERT (sec->output_section != NULL);
4032 dynindx = elf_section_data (sec->output_section)->dynindx;
4033 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
4034 outrel.r_addend = relocation;
4035 outrel.r_addend
4036 += (howto->partial_inplace
4037 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
4038 : addend);
4039 outrel.r_addend -= sec->output_section->vma;
4041 else
4043 /* h->dynindx may be -1 if this symbol was marked to
4044 become local. */
4045 if (h == NULL
4046 || ((info->symbolic || h->dynindx == -1)
4047 && h->def_regular))
4049 relocate = howto->partial_inplace;
4050 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
4052 else
4054 BFD_ASSERT (h->dynindx != -1);
4055 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
4057 outrel.r_addend = relocation;
4058 outrel.r_addend
4059 += (howto->partial_inplace
4060 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
4061 : addend);
4064 loc = sreloc->contents;
4065 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4066 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4068 check_segment[0] = check_segment[1] = -1;
4070 /* If this reloc is against an external symbol, we do
4071 not want to fiddle with the addend. Otherwise, we
4072 need to include the symbol value so that it becomes
4073 an addend for the dynamic reloc. */
4074 if (! relocate)
4075 continue;
4077 else if (fdpic_p && !bfd_link_pic (info)
4078 && r_type == R_SH_DIR32
4079 && (input_section->flags & SEC_ALLOC) != 0)
4081 bfd_vma offset;
4083 BFD_ASSERT (htab);
4085 if (sh_elf_osec_readonly_p (output_bfd,
4086 input_section->output_section))
4088 _bfd_error_handler
4089 /* xgettext:c-format */
4090 (_("%pB(%pA+%#" PRIx64 "): "
4091 "cannot emit fixup to `%s' in read-only section"),
4092 input_bfd,
4093 input_section,
4094 (uint64_t) rel->r_offset,
4095 symname);
4096 return FALSE;
4099 offset = _bfd_elf_section_offset (output_bfd, info,
4100 input_section, rel->r_offset);
4101 if (offset != (bfd_vma)-1)
4102 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4103 input_section->output_section->vma
4104 + input_section->output_offset
4105 + rel->r_offset);
4107 check_segment[0] = check_segment[1] = -1;
4109 /* We don't want warnings for non-NULL tests on undefined weak
4110 symbols. */
4111 else if (r_type == R_SH_REL32
4112 && h
4113 && h->root.type == bfd_link_hash_undefweak)
4114 check_segment[0] = check_segment[1] = -1;
4115 goto final_link_relocate;
4117 case R_SH_GOTPLT32:
4118 /* Relocation is to the entry for this symbol in the
4119 procedure linkage table. */
4121 if (h == NULL
4122 || h->forced_local
4123 || ! bfd_link_pic (info)
4124 || info->symbolic
4125 || h->dynindx == -1
4126 || h->plt.offset == (bfd_vma) -1
4127 || h->got.offset != (bfd_vma) -1)
4128 goto force_got;
4130 /* Relocation is to the entry for this symbol in the global
4131 offset table extension for the procedure linkage table. */
4133 BFD_ASSERT (htab);
4134 BFD_ASSERT (sgotplt != NULL);
4135 relocation = (sgotplt->output_offset
4136 + (get_plt_index (htab->plt_info, h->plt.offset)
4137 + 3) * 4);
4139 #ifdef GOT_BIAS
4140 relocation -= GOT_BIAS;
4141 #endif
4143 goto final_link_relocate;
4145 force_got:
4146 case R_SH_GOT32:
4147 case R_SH_GOT20:
4148 /* Relocation is to the entry for this symbol in the global
4149 offset table. */
4151 BFD_ASSERT (htab);
4152 BFD_ASSERT (sgot != NULL);
4153 check_segment[0] = check_segment[1] = -1;
4155 if (h != NULL)
4157 bfd_boolean dyn;
4159 off = h->got.offset;
4160 BFD_ASSERT (off != (bfd_vma) -1);
4162 dyn = htab->root.dynamic_sections_created;
4163 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4164 bfd_link_pic (info),
4166 || (bfd_link_pic (info)
4167 && SYMBOL_REFERENCES_LOCAL (info, h))
4168 || ((ELF_ST_VISIBILITY (h->other)
4169 || resolved_to_zero)
4170 && h->root.type == bfd_link_hash_undefweak))
4172 /* This is actually a static link, or it is a
4173 -Bsymbolic link and the symbol is defined
4174 locally, or the symbol was forced to be local
4175 because of a version file. We must initialize
4176 this entry in the global offset table. Since the
4177 offset must always be a multiple of 4, we use the
4178 least significant bit to record whether we have
4179 initialized it already.
4181 When doing a dynamic link, we create a .rela.got
4182 relocation entry to initialize the value. This
4183 is done in the finish_dynamic_symbol routine. */
4184 if ((off & 1) != 0)
4185 off &= ~1;
4186 else
4188 bfd_put_32 (output_bfd, relocation,
4189 sgot->contents + off);
4190 h->got.offset |= 1;
4192 /* If we initialize the GOT entry here with a valid
4193 symbol address, also add a fixup. */
4194 if (fdpic_p && !bfd_link_pic (info)
4195 && sh_elf_hash_entry (h)->got_type == GOT_NORMAL
4196 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4197 || h->root.type != bfd_link_hash_undefweak))
4198 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4199 sgot->output_section->vma
4200 + sgot->output_offset
4201 + off);
4205 relocation = sh_elf_got_offset (htab) + off;
4207 else
4209 BFD_ASSERT (local_got_offsets != NULL
4210 && local_got_offsets[r_symndx] != (bfd_vma) -1);
4212 off = local_got_offsets[r_symndx];
4214 /* The offset must always be a multiple of 4. We use
4215 the least significant bit to record whether we have
4216 already generated the necessary reloc. */
4217 if ((off & 1) != 0)
4218 off &= ~1;
4219 else
4221 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4223 if (bfd_link_pic (info))
4225 Elf_Internal_Rela outrel;
4226 bfd_byte *loc;
4228 outrel.r_offset = (sgot->output_section->vma
4229 + sgot->output_offset
4230 + off);
4231 if (fdpic_p)
4233 int dynindx
4234 = elf_section_data (sec->output_section)->dynindx;
4235 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
4236 outrel.r_addend = relocation;
4237 outrel.r_addend -= sec->output_section->vma;
4239 else
4241 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
4242 outrel.r_addend = relocation;
4244 loc = srelgot->contents;
4245 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4246 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4248 else if (fdpic_p
4249 && (sh_elf_local_got_type (input_bfd) [r_symndx]
4250 == GOT_NORMAL))
4251 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4252 sgot->output_section->vma
4253 + sgot->output_offset
4254 + off);
4256 local_got_offsets[r_symndx] |= 1;
4259 relocation = sh_elf_got_offset (htab) + off;
4262 #ifdef GOT_BIAS
4263 relocation -= GOT_BIAS;
4264 #endif
4266 if (r_type == R_SH_GOT20)
4268 r = install_movi20_field (output_bfd, relocation + addend,
4269 input_bfd, input_section, contents,
4270 rel->r_offset);
4271 break;
4273 else
4274 goto final_link_relocate;
4276 case R_SH_GOTOFF:
4277 case R_SH_GOTOFF20:
4278 /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
4279 we place at the start of the .got.plt section. This is the same
4280 as the start of the output .got section, unless there are function
4281 descriptors in front of it. */
4282 BFD_ASSERT (htab);
4283 BFD_ASSERT (sgotplt != NULL);
4284 check_segment[0] = got_segment;
4285 relocation -= sgotplt->output_section->vma + sgotplt->output_offset
4286 + htab->root.hgot->root.u.def.value;
4288 #ifdef GOT_BIAS
4289 relocation -= GOT_BIAS;
4290 #endif
4292 addend = rel->r_addend;
4294 if (r_type == R_SH_GOTOFF20)
4296 r = install_movi20_field (output_bfd, relocation + addend,
4297 input_bfd, input_section, contents,
4298 rel->r_offset);
4299 break;
4301 else
4302 goto final_link_relocate;
4304 case R_SH_GOTPC:
4305 /* Use global offset table as symbol value. */
4307 BFD_ASSERT (sgotplt != NULL);
4308 relocation = sgotplt->output_section->vma + sgotplt->output_offset;
4310 #ifdef GOT_BIAS
4311 relocation += GOT_BIAS;
4312 #endif
4314 addend = rel->r_addend;
4316 goto final_link_relocate;
4318 case R_SH_PLT32:
4319 /* Relocation is to the entry for this symbol in the
4320 procedure linkage table. */
4322 /* Resolve a PLT reloc against a local symbol directly,
4323 without using the procedure linkage table. */
4324 if (h == NULL)
4325 goto final_link_relocate;
4327 /* We don't want to warn on calls to undefined weak symbols,
4328 as calls to them must be protected by non-NULL tests
4329 anyway, and unprotected calls would invoke undefined
4330 behavior. */
4331 if (h->root.type == bfd_link_hash_undefweak)
4332 check_segment[0] = check_segment[1] = -1;
4334 if (h->forced_local)
4335 goto final_link_relocate;
4337 if (h->plt.offset == (bfd_vma) -1)
4339 /* We didn't make a PLT entry for this symbol. This
4340 happens when statically linking PIC code, or when
4341 using -Bsymbolic. */
4342 goto final_link_relocate;
4345 BFD_ASSERT (splt != NULL);
4346 check_segment[1] = plt_segment;
4347 relocation = (splt->output_section->vma
4348 + splt->output_offset
4349 + h->plt.offset);
4351 addend = rel->r_addend;
4353 goto final_link_relocate;
4355 /* Relocation is to the canonical function descriptor for this
4356 symbol, possibly via the GOT. Initialize the GOT
4357 entry and function descriptor if necessary. */
4358 case R_SH_GOTFUNCDESC:
4359 case R_SH_GOTFUNCDESC20:
4360 case R_SH_FUNCDESC:
4362 int dynindx = -1;
4363 asection *reloc_section;
4364 bfd_vma reloc_offset;
4365 int reloc_type = R_SH_FUNCDESC;
4367 BFD_ASSERT (htab);
4369 check_segment[0] = check_segment[1] = -1;
4371 /* FIXME: See what FRV does for global symbols in the
4372 executable, with --export-dynamic. Do they need ld.so
4373 to allocate official descriptors? See what this code
4374 does. */
4376 relocation = 0;
4377 addend = 0;
4379 if (r_type == R_SH_FUNCDESC)
4381 reloc_section = input_section;
4382 reloc_offset = rel->r_offset;
4384 else
4386 reloc_section = sgot;
4388 if (h != NULL)
4389 reloc_offset = h->got.offset;
4390 else
4392 BFD_ASSERT (local_got_offsets != NULL);
4393 reloc_offset = local_got_offsets[r_symndx];
4395 BFD_ASSERT (reloc_offset != MINUS_ONE);
4397 if (reloc_offset & 1)
4399 reloc_offset &= ~1;
4400 goto funcdesc_done_got;
4404 if (h && h->root.type == bfd_link_hash_undefweak
4405 && (SYMBOL_CALLS_LOCAL (info, h)
4406 || !htab->root.dynamic_sections_created))
4407 /* Undefined weak symbol which will not be dynamically
4408 resolved later; leave it at zero. */
4409 goto funcdesc_leave_zero;
4410 else if (SYMBOL_CALLS_LOCAL (info, h)
4411 && ! SYMBOL_FUNCDESC_LOCAL (info, h))
4413 /* If the symbol needs a non-local function descriptor
4414 but binds locally (i.e., its visibility is
4415 protected), emit a dynamic relocation decayed to
4416 section+offset. This is an optimization; the dynamic
4417 linker would resolve our function descriptor request
4418 to our copy of the function anyway. */
4419 dynindx = elf_section_data (h->root.u.def.section
4420 ->output_section)->dynindx;
4421 relocation += h->root.u.def.section->output_offset
4422 + h->root.u.def.value;
4424 else if (! SYMBOL_FUNCDESC_LOCAL (info, h))
4426 /* If the symbol is dynamic and there will be dynamic
4427 symbol resolution because we are or are linked with a
4428 shared library, emit a FUNCDESC relocation such that
4429 the dynamic linker will allocate the function
4430 descriptor. */
4431 BFD_ASSERT (h->dynindx != -1);
4432 dynindx = h->dynindx;
4434 else
4436 bfd_vma offset;
4438 /* Otherwise, we know we have a private function
4439 descriptor, so reference it directly. */
4440 reloc_type = R_SH_DIR32;
4441 dynindx = elf_section_data (htab->sfuncdesc
4442 ->output_section)->dynindx;
4444 if (h)
4446 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4447 BFD_ASSERT (offset != MINUS_ONE);
4448 if ((offset & 1) == 0)
4450 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4451 offset, NULL, 0))
4452 return FALSE;
4453 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4456 else
4458 union gotref *local_funcdesc;
4460 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4461 offset = local_funcdesc[r_symndx].offset;
4462 BFD_ASSERT (offset != MINUS_ONE);
4463 if ((offset & 1) == 0)
4465 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4466 offset, sec,
4467 sym->st_value))
4468 return FALSE;
4469 local_funcdesc[r_symndx].offset |= 1;
4473 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4476 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
4478 bfd_vma offset;
4480 if (sh_elf_osec_readonly_p (output_bfd,
4481 reloc_section->output_section))
4483 _bfd_error_handler
4484 /* xgettext:c-format */
4485 (_("%pB(%pA+%#" PRIx64 "): "
4486 "cannot emit fixup to `%s' in read-only section"),
4487 input_bfd,
4488 input_section,
4489 (uint64_t) rel->r_offset,
4490 symname);
4491 return FALSE;
4494 offset = _bfd_elf_section_offset (output_bfd, info,
4495 reloc_section, reloc_offset);
4497 if (offset != (bfd_vma)-1)
4498 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4499 offset
4500 + reloc_section->output_section->vma
4501 + reloc_section->output_offset);
4503 else if ((reloc_section->output_section->flags
4504 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
4506 bfd_vma offset;
4508 if (sh_elf_osec_readonly_p (output_bfd,
4509 reloc_section->output_section))
4511 info->callbacks->warning
4512 (info,
4513 _("cannot emit dynamic relocations in read-only section"),
4514 symname, input_bfd, reloc_section, reloc_offset);
4515 return FALSE;
4518 offset = _bfd_elf_section_offset (output_bfd, info,
4519 reloc_section, reloc_offset);
4521 if (offset != (bfd_vma)-1)
4522 sh_elf_add_dyn_reloc (output_bfd, srelgot,
4523 offset
4524 + reloc_section->output_section->vma
4525 + reloc_section->output_offset,
4526 reloc_type, dynindx, relocation);
4528 if (r_type == R_SH_FUNCDESC)
4530 r = bfd_reloc_ok;
4531 break;
4533 else
4535 relocation = 0;
4536 goto funcdesc_leave_zero;
4540 if (SYMBOL_FUNCDESC_LOCAL (info, h))
4541 relocation += htab->sfuncdesc->output_section->vma;
4542 funcdesc_leave_zero:
4543 if (r_type != R_SH_FUNCDESC)
4545 bfd_put_32 (output_bfd, relocation,
4546 reloc_section->contents + reloc_offset);
4547 if (h != NULL)
4548 h->got.offset |= 1;
4549 else
4550 local_got_offsets[r_symndx] |= 1;
4552 funcdesc_done_got:
4554 relocation = sh_elf_got_offset (htab) + reloc_offset;
4555 #ifdef GOT_BIAS
4556 relocation -= GOT_BIAS;
4557 #endif
4559 if (r_type == R_SH_GOTFUNCDESC20)
4561 r = install_movi20_field (output_bfd, relocation + addend,
4562 input_bfd, input_section, contents,
4563 rel->r_offset);
4564 break;
4566 else
4567 goto final_link_relocate;
4569 break;
4571 case R_SH_GOTOFFFUNCDESC:
4572 case R_SH_GOTOFFFUNCDESC20:
4573 /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
4574 executable and --export-dynamic. If such symbols get
4575 ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
4576 for them. */
4577 BFD_ASSERT (htab);
4579 check_segment[0] = check_segment[1] = -1;
4580 relocation = 0;
4581 addend = rel->r_addend;
4583 if (h && (h->root.type == bfd_link_hash_undefweak
4584 || !SYMBOL_FUNCDESC_LOCAL (info, h)))
4586 _bfd_error_handler
4587 /* xgettext:c-format */
4588 (_("%pB(%pA+%#" PRIx64 "): "
4589 "%s relocation against external symbol \"%s\""),
4590 input_bfd, input_section, (uint64_t) rel->r_offset,
4591 howto->name, h->root.root.string);
4592 return FALSE;
4594 else
4596 bfd_vma offset;
4598 /* Otherwise, we know we have a private function
4599 descriptor, so reference it directly. */
4600 if (h)
4602 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4603 BFD_ASSERT (offset != MINUS_ONE);
4604 if ((offset & 1) == 0)
4606 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4607 offset, NULL, 0))
4608 return FALSE;
4609 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4612 else
4614 union gotref *local_funcdesc;
4616 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4617 offset = local_funcdesc[r_symndx].offset;
4618 BFD_ASSERT (offset != MINUS_ONE);
4619 if ((offset & 1) == 0)
4621 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4622 offset, sec,
4623 sym->st_value))
4624 return FALSE;
4625 local_funcdesc[r_symndx].offset |= 1;
4629 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4632 relocation -= (htab->root.hgot->root.u.def.value
4633 + sgotplt->output_offset);
4634 #ifdef GOT_BIAS
4635 relocation -= GOT_BIAS;
4636 #endif
4638 if (r_type == R_SH_GOTOFFFUNCDESC20)
4640 r = install_movi20_field (output_bfd, relocation + addend,
4641 input_bfd, input_section, contents,
4642 rel->r_offset);
4643 break;
4645 else
4646 goto final_link_relocate;
4648 case R_SH_LOOP_START:
4650 static bfd_vma start, end;
4652 start = (relocation + rel->r_addend
4653 - (sec->output_section->vma + sec->output_offset));
4654 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4655 rel->r_offset, sec, start, end);
4656 break;
4658 case R_SH_LOOP_END:
4659 end = (relocation + rel->r_addend
4660 - (sec->output_section->vma + sec->output_offset));
4661 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4662 rel->r_offset, sec, start, end);
4663 break;
4666 case R_SH_TLS_GD_32:
4667 case R_SH_TLS_IE_32:
4668 BFD_ASSERT (htab);
4669 check_segment[0] = check_segment[1] = -1;
4670 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4671 got_type = GOT_UNKNOWN;
4672 if (h == NULL && local_got_offsets)
4673 got_type = sh_elf_local_got_type (input_bfd) [r_symndx];
4674 else if (h != NULL)
4676 got_type = sh_elf_hash_entry (h)->got_type;
4677 if (! bfd_link_pic (info)
4678 && (h->dynindx == -1
4679 || h->def_regular))
4680 r_type = R_SH_TLS_LE_32;
4683 if (r_type == R_SH_TLS_GD_32 && got_type == GOT_TLS_IE)
4684 r_type = R_SH_TLS_IE_32;
4686 if (r_type == R_SH_TLS_LE_32)
4688 bfd_vma offset;
4689 unsigned short insn;
4691 if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4693 /* GD->LE transition:
4694 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4695 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4696 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4697 We change it into:
4698 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4699 nop; nop; ...
4700 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4702 offset = rel->r_offset;
4703 if (offset < 16)
4705 _bfd_error_handler
4706 /* xgettext:c-format */
4707 (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64),
4708 input_bfd, input_section, (uint64_t) offset);
4709 return FALSE;
4712 /* Size of GD instructions is 16 or 18. */
4713 offset -= 16;
4714 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4715 if ((insn & 0xff00) == 0xc700)
4717 BFD_ASSERT (offset >= 2);
4718 offset -= 2;
4719 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4722 if ((insn & 0xff00) != 0xd400)
4723 _bfd_error_handler
4724 /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */
4725 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd4?\?)"),
4726 input_bfd, input_section, (uint64_t) offset, (int) insn);
4728 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4730 if ((insn & 0xff00) != 0xc700)
4731 _bfd_error_handler
4732 /* xgettext:c-format */
4733 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xc7?\?)"),
4734 input_bfd, input_section, (uint64_t) offset, (int) insn);
4736 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4737 if ((insn & 0xff00) != 0xd100)
4738 _bfd_error_handler
4739 /* xgettext:c-format */
4740 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd1?\?)"),
4741 input_bfd, input_section, (uint64_t) offset, (int) insn);
4743 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4744 if (insn != 0x310c)
4745 _bfd_error_handler
4746 /* xgettext:c-format */
4747 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x310c)"),
4748 input_bfd, input_section, (uint64_t) offset, (int) insn);
4750 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4751 if (insn != 0x410b)
4752 _bfd_error_handler
4753 /* xgettext:c-format */
4754 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x410b)"),
4755 input_bfd, input_section, (uint64_t) offset, (int) insn);
4757 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4758 if (insn != 0x34cc)
4759 _bfd_error_handler
4760 /* xgettext:c-format */
4761 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x34cc)"),
4762 input_bfd, input_section, (uint64_t) offset, (int) insn);
4764 bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4765 bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4766 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4767 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4768 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4770 else
4772 int target;
4774 /* IE->LE transition:
4775 mov.l 1f,r0;
4776 stc gbr,rN;
4777 mov.l @(r0,r12),rM;
4778 bra 2f;
4779 add ...;
4780 .align 2;
4781 1: x@GOTTPOFF;
4783 We change it into:
4784 mov.l .Ln,rM;
4785 stc gbr,rN;
4786 nop;
4787 ...;
4788 1: x@TPOFF;
4789 2:. */
4791 offset = rel->r_offset;
4792 if (offset < 16)
4794 _bfd_error_handler
4795 /* xgettext:c-format */
4796 (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64),
4797 input_bfd, input_section, (uint64_t) offset);
4798 return FALSE;
4801 /* Size of IE instructions is 10 or 12. */
4802 offset -= 10;
4803 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4804 if ((insn & 0xf0ff) == 0x0012)
4806 BFD_ASSERT (offset >= 2);
4807 offset -= 2;
4808 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4811 if ((insn & 0xff00) != 0xd000)
4812 _bfd_error_handler
4813 /* xgettext:c-format */
4814 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd0??: mov.l)"),
4815 input_bfd, input_section, (uint64_t) offset, (int) insn);
4817 target = insn & 0x00ff;
4819 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4820 if ((insn & 0xf0ff) != 0x0012)
4821 _bfd_error_handler
4822 /* xgettext:c-format */
4823 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?12: stc)"),
4824 input_bfd, input_section, (uint64_t) (offset + 2), (int) insn);
4826 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4827 if ((insn & 0xf0ff) != 0x00ce)
4828 _bfd_error_handler
4829 /* xgettext:c-format */
4830 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?ce: mov.l)"),
4831 input_bfd, input_section, (uint64_t) (offset + 4), (int) insn);
4833 insn = 0xd000 | (insn & 0x0f00) | target;
4834 bfd_put_16 (output_bfd, insn, contents + offset + 0);
4835 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4838 bfd_put_32 (output_bfd, tpoff (info, relocation),
4839 contents + rel->r_offset);
4840 continue;
4843 if (sgot == NULL || sgotplt == NULL)
4844 abort ();
4846 if (h != NULL)
4847 off = h->got.offset;
4848 else
4850 if (local_got_offsets == NULL)
4851 abort ();
4853 off = local_got_offsets[r_symndx];
4856 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4857 if (r_type == R_SH_TLS_IE_32
4858 && ! htab->root.dynamic_sections_created)
4860 off &= ~1;
4861 bfd_put_32 (output_bfd, tpoff (info, relocation),
4862 sgot->contents + off);
4863 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4864 contents + rel->r_offset);
4865 continue;
4868 if ((off & 1) != 0)
4869 off &= ~1;
4870 else
4872 Elf_Internal_Rela outrel;
4873 bfd_byte *loc;
4874 int dr_type, indx;
4876 outrel.r_offset = (sgot->output_section->vma
4877 + sgot->output_offset + off);
4879 if (h == NULL || h->dynindx == -1)
4880 indx = 0;
4881 else
4882 indx = h->dynindx;
4884 dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4885 R_SH_TLS_TPOFF32);
4886 if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4887 outrel.r_addend = relocation - dtpoff_base (info);
4888 else
4889 outrel.r_addend = 0;
4890 outrel.r_info = ELF32_R_INFO (indx, dr_type);
4891 loc = srelgot->contents;
4892 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4893 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4895 if (r_type == R_SH_TLS_GD_32)
4897 if (indx == 0)
4899 bfd_put_32 (output_bfd,
4900 relocation - dtpoff_base (info),
4901 sgot->contents + off + 4);
4903 else
4905 outrel.r_info = ELF32_R_INFO (indx,
4906 R_SH_TLS_DTPOFF32);
4907 outrel.r_offset += 4;
4908 outrel.r_addend = 0;
4909 srelgot->reloc_count++;
4910 loc += sizeof (Elf32_External_Rela);
4911 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4915 if (h != NULL)
4916 h->got.offset |= 1;
4917 else
4918 local_got_offsets[r_symndx] |= 1;
4921 if (off >= (bfd_vma) -2)
4922 abort ();
4924 if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4925 relocation = sh_elf_got_offset (htab) + off;
4926 else
4928 bfd_vma offset;
4929 unsigned short insn;
4931 /* GD->IE transition:
4932 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4933 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4934 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4935 We change it into:
4936 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4937 nop; nop; bra 3f; nop; .align 2;
4938 1: .long x@TPOFF; 2:...; 3:. */
4940 offset = rel->r_offset;
4941 if (offset < 16)
4943 _bfd_error_handler
4944 /* xgettext:c-format */
4945 (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64),
4946 input_bfd, input_section, (uint64_t) offset);
4947 return FALSE;
4950 /* Size of GD instructions is 16 or 18. */
4951 offset -= 16;
4952 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4953 if ((insn & 0xff00) == 0xc700)
4955 BFD_ASSERT (offset >= 2);
4956 offset -= 2;
4957 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4960 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4962 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4963 bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4965 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4966 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4967 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4968 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4969 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4970 BFD_ASSERT (insn == 0x310c);
4971 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4972 BFD_ASSERT (insn == 0x410b);
4973 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4974 BFD_ASSERT (insn == 0x34cc);
4976 bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4977 bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4978 bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4979 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4980 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4982 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4983 contents + rel->r_offset);
4985 continue;
4988 addend = rel->r_addend;
4990 goto final_link_relocate;
4992 case R_SH_TLS_LD_32:
4993 BFD_ASSERT (htab);
4994 check_segment[0] = check_segment[1] = -1;
4995 if (! bfd_link_pic (info))
4997 bfd_vma offset;
4998 unsigned short insn;
5000 /* LD->LE transition:
5001 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
5002 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
5003 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
5004 We change it into:
5005 stc gbr,r0; nop; nop; nop;
5006 nop; nop; bra 3f; ...; 3:. */
5008 offset = rel->r_offset;
5009 if (offset < 16)
5011 _bfd_error_handler
5012 /* xgettext:c-format */
5013 (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64),
5014 input_bfd, input_section, (uint64_t) offset);
5015 return FALSE;
5018 /* Size of LD instructions is 16 or 18. */
5019 offset -= 16;
5020 insn = bfd_get_16 (input_bfd, contents + offset + 0);
5021 if ((insn & 0xff00) == 0xc700)
5023 BFD_ASSERT (offset >= 2);
5024 offset -= 2;
5025 insn = bfd_get_16 (input_bfd, contents + offset + 0);
5028 BFD_ASSERT ((insn & 0xff00) == 0xd400);
5029 insn = bfd_get_16 (input_bfd, contents + offset + 2);
5030 BFD_ASSERT ((insn & 0xff00) == 0xc700);
5031 insn = bfd_get_16 (input_bfd, contents + offset + 4);
5032 BFD_ASSERT ((insn & 0xff00) == 0xd100);
5033 insn = bfd_get_16 (input_bfd, contents + offset + 6);
5034 BFD_ASSERT (insn == 0x310c);
5035 insn = bfd_get_16 (input_bfd, contents + offset + 8);
5036 BFD_ASSERT (insn == 0x410b);
5037 insn = bfd_get_16 (input_bfd, contents + offset + 10);
5038 BFD_ASSERT (insn == 0x34cc);
5040 bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
5041 bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
5042 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
5043 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
5044 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
5045 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
5047 continue;
5050 if (sgot == NULL || sgotplt == NULL)
5051 abort ();
5053 off = htab->tls_ldm_got.offset;
5054 if (off & 1)
5055 off &= ~1;
5056 else
5058 Elf_Internal_Rela outrel;
5059 bfd_byte *loc;
5061 outrel.r_offset = (sgot->output_section->vma
5062 + sgot->output_offset + off);
5063 outrel.r_addend = 0;
5064 outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
5065 loc = srelgot->contents;
5066 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
5067 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5068 htab->tls_ldm_got.offset |= 1;
5071 relocation = sh_elf_got_offset (htab) + off;
5072 addend = rel->r_addend;
5074 goto final_link_relocate;
5076 case R_SH_TLS_LDO_32:
5077 check_segment[0] = check_segment[1] = -1;
5078 if (! bfd_link_pic (info))
5079 relocation = tpoff (info, relocation);
5080 else
5081 relocation -= dtpoff_base (info);
5083 addend = rel->r_addend;
5084 goto final_link_relocate;
5086 case R_SH_TLS_LE_32:
5088 int indx;
5089 Elf_Internal_Rela outrel;
5090 bfd_byte *loc;
5092 check_segment[0] = check_segment[1] = -1;
5094 if (!bfd_link_dll (info))
5096 relocation = tpoff (info, relocation);
5097 addend = rel->r_addend;
5098 goto final_link_relocate;
5101 if (sreloc == NULL)
5103 sreloc = _bfd_elf_get_dynamic_reloc_section
5104 (input_bfd, input_section, /*rela?*/ TRUE);
5105 if (sreloc == NULL)
5106 return FALSE;
5109 if (h == NULL || h->dynindx == -1)
5110 indx = 0;
5111 else
5112 indx = h->dynindx;
5114 outrel.r_offset = (input_section->output_section->vma
5115 + input_section->output_offset
5116 + rel->r_offset);
5117 outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
5118 if (indx == 0)
5119 outrel.r_addend = relocation - dtpoff_base (info);
5120 else
5121 outrel.r_addend = 0;
5123 loc = sreloc->contents;
5124 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
5125 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5126 continue;
5130 relocation_done:
5131 if (fdpic_p && check_segment[0] != (unsigned) -1
5132 && check_segment[0] != check_segment[1])
5134 /* We don't want duplicate errors for undefined symbols. */
5135 if (!h || h->root.type != bfd_link_hash_undefined)
5137 if (bfd_link_pic (info))
5139 info->callbacks->einfo
5140 /* xgettext:c-format */
5141 (_("%X%C: relocation to \"%s\" references a different segment\n"),
5142 input_bfd, input_section, rel->r_offset, symname);
5143 return FALSE;
5145 else
5146 info->callbacks->einfo
5147 /* xgettext:c-format */
5148 (_("%C: warning: relocation to \"%s\" references a different segment\n"),
5149 input_bfd, input_section, rel->r_offset, symname);
5152 elf_elfheader (output_bfd)->e_flags |= EF_SH_PIC;
5155 if (r != bfd_reloc_ok)
5157 switch (r)
5159 default:
5160 case bfd_reloc_outofrange:
5161 abort ();
5162 case bfd_reloc_overflow:
5164 const char *name;
5166 if (h != NULL)
5167 name = NULL;
5168 else
5170 name = (bfd_elf_string_from_elf_section
5171 (input_bfd, symtab_hdr->sh_link, sym->st_name));
5172 if (name == NULL)
5173 return FALSE;
5174 if (*name == '\0')
5175 name = bfd_section_name (sec);
5177 (*info->callbacks->reloc_overflow)
5178 (info, (h ? &h->root : NULL), name, howto->name,
5179 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
5181 break;
5186 return TRUE;
5189 /* This is a version of bfd_generic_get_relocated_section_contents
5190 which uses sh_elf_relocate_section. */
5192 static bfd_byte *
5193 sh_elf_get_relocated_section_contents (bfd *output_bfd,
5194 struct bfd_link_info *link_info,
5195 struct bfd_link_order *link_order,
5196 bfd_byte *data,
5197 bfd_boolean relocatable,
5198 asymbol **symbols)
5200 Elf_Internal_Shdr *symtab_hdr;
5201 asection *input_section = link_order->u.indirect.section;
5202 bfd *input_bfd = input_section->owner;
5203 asection **sections = NULL;
5204 Elf_Internal_Rela *internal_relocs = NULL;
5205 Elf_Internal_Sym *isymbuf = NULL;
5207 /* We only need to handle the case of relaxing, or of having a
5208 particular set of section contents, specially. */
5209 if (relocatable
5210 || elf_section_data (input_section)->this_hdr.contents == NULL)
5211 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
5212 link_order, data,
5213 relocatable,
5214 symbols);
5216 symtab_hdr = &elf_symtab_hdr (input_bfd);
5218 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
5219 (size_t) input_section->size);
5221 if ((input_section->flags & SEC_RELOC) != 0
5222 && input_section->reloc_count > 0)
5224 asection **secpp;
5225 Elf_Internal_Sym *isym, *isymend;
5226 bfd_size_type amt;
5228 internal_relocs = (_bfd_elf_link_read_relocs
5229 (input_bfd, input_section, NULL,
5230 (Elf_Internal_Rela *) NULL, FALSE));
5231 if (internal_relocs == NULL)
5232 goto error_return;
5234 if (symtab_hdr->sh_info != 0)
5236 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5237 if (isymbuf == NULL)
5238 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
5239 symtab_hdr->sh_info, 0,
5240 NULL, NULL, NULL);
5241 if (isymbuf == NULL)
5242 goto error_return;
5245 amt = symtab_hdr->sh_info;
5246 amt *= sizeof (asection *);
5247 sections = (asection **) bfd_malloc (amt);
5248 if (sections == NULL && amt != 0)
5249 goto error_return;
5251 isymend = isymbuf + symtab_hdr->sh_info;
5252 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
5254 asection *isec;
5256 if (isym->st_shndx == SHN_UNDEF)
5257 isec = bfd_und_section_ptr;
5258 else if (isym->st_shndx == SHN_ABS)
5259 isec = bfd_abs_section_ptr;
5260 else if (isym->st_shndx == SHN_COMMON)
5261 isec = bfd_com_section_ptr;
5262 else
5263 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
5265 *secpp = isec;
5268 if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
5269 input_section, data, internal_relocs,
5270 isymbuf, sections))
5271 goto error_return;
5273 if (sections != NULL)
5274 free (sections);
5275 if (isymbuf != NULL
5276 && symtab_hdr->contents != (unsigned char *) isymbuf)
5277 free (isymbuf);
5278 if (elf_section_data (input_section)->relocs != internal_relocs)
5279 free (internal_relocs);
5282 return data;
5284 error_return:
5285 if (sections != NULL)
5286 free (sections);
5287 if (isymbuf != NULL
5288 && symtab_hdr->contents != (unsigned char *) isymbuf)
5289 free (isymbuf);
5290 if (internal_relocs != NULL
5291 && elf_section_data (input_section)->relocs != internal_relocs)
5292 free (internal_relocs);
5293 return NULL;
5296 /* Return the base VMA address which should be subtracted from real addresses
5297 when resolving @dtpoff relocation.
5298 This is PT_TLS segment p_vaddr. */
5300 static bfd_vma
5301 dtpoff_base (struct bfd_link_info *info)
5303 /* If tls_sec is NULL, we should have signalled an error already. */
5304 if (elf_hash_table (info)->tls_sec == NULL)
5305 return 0;
5306 return elf_hash_table (info)->tls_sec->vma;
5309 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
5311 static bfd_vma
5312 tpoff (struct bfd_link_info *info, bfd_vma address)
5314 /* If tls_sec is NULL, we should have signalled an error already. */
5315 if (elf_hash_table (info)->tls_sec == NULL)
5316 return 0;
5317 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
5318 structure which has 2 pointer fields. */
5319 return (address - elf_hash_table (info)->tls_sec->vma
5320 + align_power ((bfd_vma) 8,
5321 elf_hash_table (info)->tls_sec->alignment_power));
5324 static asection *
5325 sh_elf_gc_mark_hook (asection *sec,
5326 struct bfd_link_info *info,
5327 Elf_Internal_Rela *rel,
5328 struct elf_link_hash_entry *h,
5329 Elf_Internal_Sym *sym)
5331 if (h != NULL)
5332 switch (ELF32_R_TYPE (rel->r_info))
5334 case R_SH_GNU_VTINHERIT:
5335 case R_SH_GNU_VTENTRY:
5336 return NULL;
5339 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5342 /* Copy the extra info we tack onto an elf_link_hash_entry. */
5344 static void
5345 sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
5346 struct elf_link_hash_entry *dir,
5347 struct elf_link_hash_entry *ind)
5349 struct elf_sh_link_hash_entry *edir, *eind;
5351 edir = (struct elf_sh_link_hash_entry *) dir;
5352 eind = (struct elf_sh_link_hash_entry *) ind;
5354 if (eind->dyn_relocs != NULL)
5356 if (edir->dyn_relocs != NULL)
5358 struct elf_dyn_relocs **pp;
5359 struct elf_dyn_relocs *p;
5361 /* Add reloc counts against the indirect sym to the direct sym
5362 list. Merge any entries against the same section. */
5363 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
5365 struct elf_dyn_relocs *q;
5367 for (q = edir->dyn_relocs; q != NULL; q = q->next)
5368 if (q->sec == p->sec)
5370 q->pc_count += p->pc_count;
5371 q->count += p->count;
5372 *pp = p->next;
5373 break;
5375 if (q == NULL)
5376 pp = &p->next;
5378 *pp = edir->dyn_relocs;
5381 edir->dyn_relocs = eind->dyn_relocs;
5382 eind->dyn_relocs = NULL;
5384 edir->gotplt_refcount = eind->gotplt_refcount;
5385 eind->gotplt_refcount = 0;
5386 edir->funcdesc.refcount += eind->funcdesc.refcount;
5387 eind->funcdesc.refcount = 0;
5388 edir->abs_funcdesc_refcount += eind->abs_funcdesc_refcount;
5389 eind->abs_funcdesc_refcount = 0;
5391 if (ind->root.type == bfd_link_hash_indirect
5392 && dir->got.refcount <= 0)
5394 edir->got_type = eind->got_type;
5395 eind->got_type = GOT_UNKNOWN;
5398 if (ind->root.type != bfd_link_hash_indirect
5399 && dir->dynamic_adjusted)
5401 /* If called to transfer flags for a weakdef during processing
5402 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
5403 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
5404 if (dir->versioned != versioned_hidden)
5405 dir->ref_dynamic |= ind->ref_dynamic;
5406 dir->ref_regular |= ind->ref_regular;
5407 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
5408 dir->needs_plt |= ind->needs_plt;
5410 else
5411 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
5414 static int
5415 sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
5416 int is_local)
5418 if (bfd_link_pic (info))
5419 return r_type;
5421 switch (r_type)
5423 case R_SH_TLS_GD_32:
5424 case R_SH_TLS_IE_32:
5425 if (is_local)
5426 return R_SH_TLS_LE_32;
5427 return R_SH_TLS_IE_32;
5428 case R_SH_TLS_LD_32:
5429 return R_SH_TLS_LE_32;
5432 return r_type;
5435 /* Look through the relocs for a section during the first phase.
5436 Since we don't do .gots or .plts, we just need to consider the
5437 virtual table relocs for gc. */
5439 static bfd_boolean
5440 sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
5441 const Elf_Internal_Rela *relocs)
5443 Elf_Internal_Shdr *symtab_hdr;
5444 struct elf_link_hash_entry **sym_hashes;
5445 struct elf_sh_link_hash_table *htab;
5446 const Elf_Internal_Rela *rel;
5447 const Elf_Internal_Rela *rel_end;
5448 asection *sreloc;
5449 unsigned int r_type;
5450 enum got_type got_type, old_got_type;
5452 sreloc = NULL;
5454 if (bfd_link_relocatable (info))
5455 return TRUE;
5457 /* Don't do anything special with non-loaded, non-alloced sections.
5458 In particular, any relocs in such sections should not affect GOT
5459 and PLT reference counting (ie. we don't allow them to create GOT
5460 or PLT entries), there's no possibility or desire to optimize TLS
5461 relocs, and there's not much point in propagating relocs to shared
5462 libs that the dynamic linker won't relocate. */
5463 if ((sec->flags & SEC_ALLOC) == 0)
5464 return TRUE;
5466 BFD_ASSERT (is_sh_elf (abfd));
5468 symtab_hdr = &elf_symtab_hdr (abfd);
5469 sym_hashes = elf_sym_hashes (abfd);
5471 htab = sh_elf_hash_table (info);
5472 if (htab == NULL)
5473 return FALSE;
5475 rel_end = relocs + sec->reloc_count;
5476 for (rel = relocs; rel < rel_end; rel++)
5478 struct elf_link_hash_entry *h;
5479 unsigned long r_symndx;
5481 r_symndx = ELF32_R_SYM (rel->r_info);
5482 r_type = ELF32_R_TYPE (rel->r_info);
5484 if (r_symndx < symtab_hdr->sh_info)
5485 h = NULL;
5486 else
5488 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5489 while (h->root.type == bfd_link_hash_indirect
5490 || h->root.type == bfd_link_hash_warning)
5491 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5494 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
5495 if (! bfd_link_pic (info)
5496 && r_type == R_SH_TLS_IE_32
5497 && h != NULL
5498 && h->root.type != bfd_link_hash_undefined
5499 && h->root.type != bfd_link_hash_undefweak
5500 && (h->dynindx == -1
5501 || h->def_regular))
5502 r_type = R_SH_TLS_LE_32;
5504 if (htab->fdpic_p)
5505 switch (r_type)
5507 case R_SH_GOTOFFFUNCDESC:
5508 case R_SH_GOTOFFFUNCDESC20:
5509 case R_SH_FUNCDESC:
5510 case R_SH_GOTFUNCDESC:
5511 case R_SH_GOTFUNCDESC20:
5512 if (h != NULL)
5514 if (h->dynindx == -1)
5515 switch (ELF_ST_VISIBILITY (h->other))
5517 case STV_INTERNAL:
5518 case STV_HIDDEN:
5519 break;
5520 default:
5521 bfd_elf_link_record_dynamic_symbol (info, h);
5522 break;
5525 break;
5528 /* Some relocs require a global offset table. */
5529 if (htab->root.sgot == NULL)
5531 switch (r_type)
5533 case R_SH_DIR32:
5534 /* This may require an rofixup. */
5535 if (!htab->fdpic_p)
5536 break;
5537 /* Fall through. */
5538 case R_SH_GOTPLT32:
5539 case R_SH_GOT32:
5540 case R_SH_GOT20:
5541 case R_SH_GOTOFF:
5542 case R_SH_GOTOFF20:
5543 case R_SH_FUNCDESC:
5544 case R_SH_GOTFUNCDESC:
5545 case R_SH_GOTFUNCDESC20:
5546 case R_SH_GOTOFFFUNCDESC:
5547 case R_SH_GOTOFFFUNCDESC20:
5548 case R_SH_GOTPC:
5549 case R_SH_TLS_GD_32:
5550 case R_SH_TLS_LD_32:
5551 case R_SH_TLS_IE_32:
5552 if (htab->root.dynobj == NULL)
5553 htab->root.dynobj = abfd;
5554 if (!create_got_section (htab->root.dynobj, info))
5555 return FALSE;
5556 break;
5558 default:
5559 break;
5563 switch (r_type)
5565 /* This relocation describes the C++ object vtable hierarchy.
5566 Reconstruct it for later use during GC. */
5567 case R_SH_GNU_VTINHERIT:
5568 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5569 return FALSE;
5570 break;
5572 /* This relocation describes which C++ vtable entries are actually
5573 used. Record for later use during GC. */
5574 case R_SH_GNU_VTENTRY:
5575 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5576 return FALSE;
5577 break;
5579 case R_SH_TLS_IE_32:
5580 if (bfd_link_pic (info))
5581 info->flags |= DF_STATIC_TLS;
5583 /* FALLTHROUGH */
5584 force_got:
5585 case R_SH_TLS_GD_32:
5586 case R_SH_GOT32:
5587 case R_SH_GOT20:
5588 case R_SH_GOTFUNCDESC:
5589 case R_SH_GOTFUNCDESC20:
5590 switch (r_type)
5592 default:
5593 got_type = GOT_NORMAL;
5594 break;
5595 case R_SH_TLS_GD_32:
5596 got_type = GOT_TLS_GD;
5597 break;
5598 case R_SH_TLS_IE_32:
5599 got_type = GOT_TLS_IE;
5600 break;
5601 case R_SH_GOTFUNCDESC:
5602 case R_SH_GOTFUNCDESC20:
5603 got_type = GOT_FUNCDESC;
5604 break;
5607 if (h != NULL)
5609 h->got.refcount += 1;
5610 old_got_type = sh_elf_hash_entry (h)->got_type;
5612 else
5614 bfd_signed_vma *local_got_refcounts;
5616 /* This is a global offset table entry for a local
5617 symbol. */
5618 local_got_refcounts = elf_local_got_refcounts (abfd);
5619 if (local_got_refcounts == NULL)
5621 bfd_size_type size;
5623 size = symtab_hdr->sh_info;
5624 size *= sizeof (bfd_signed_vma);
5625 size += symtab_hdr->sh_info;
5626 local_got_refcounts = ((bfd_signed_vma *)
5627 bfd_zalloc (abfd, size));
5628 if (local_got_refcounts == NULL)
5629 return FALSE;
5630 elf_local_got_refcounts (abfd) = local_got_refcounts;
5631 sh_elf_local_got_type (abfd)
5632 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5634 local_got_refcounts[r_symndx] += 1;
5635 old_got_type = sh_elf_local_got_type (abfd) [r_symndx];
5638 /* If a TLS symbol is accessed using IE at least once,
5639 there is no point to use dynamic model for it. */
5640 if (old_got_type != got_type && old_got_type != GOT_UNKNOWN
5641 && (old_got_type != GOT_TLS_GD || got_type != GOT_TLS_IE))
5643 if (old_got_type == GOT_TLS_IE && got_type == GOT_TLS_GD)
5644 got_type = GOT_TLS_IE;
5645 else
5647 if ((old_got_type == GOT_FUNCDESC || got_type == GOT_FUNCDESC)
5648 && (old_got_type == GOT_NORMAL || got_type == GOT_NORMAL))
5649 _bfd_error_handler
5650 /* xgettext:c-format */
5651 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5652 abfd, h->root.root.string);
5653 else if (old_got_type == GOT_FUNCDESC
5654 || got_type == GOT_FUNCDESC)
5655 _bfd_error_handler
5656 /* xgettext:c-format */
5657 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5658 abfd, h->root.root.string);
5659 else
5660 _bfd_error_handler
5661 /* xgettext:c-format */
5662 (_("%pB: `%s' accessed both as normal and thread local symbol"),
5663 abfd, h->root.root.string);
5664 return FALSE;
5668 if (old_got_type != got_type)
5670 if (h != NULL)
5671 sh_elf_hash_entry (h)->got_type = got_type;
5672 else
5673 sh_elf_local_got_type (abfd) [r_symndx] = got_type;
5676 break;
5678 case R_SH_TLS_LD_32:
5679 sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5680 break;
5682 case R_SH_FUNCDESC:
5683 case R_SH_GOTOFFFUNCDESC:
5684 case R_SH_GOTOFFFUNCDESC20:
5685 if (rel->r_addend)
5687 _bfd_error_handler
5688 (_("%pB: Function descriptor relocation with non-zero addend"),
5689 abfd);
5690 return FALSE;
5693 if (h == NULL)
5695 union gotref *local_funcdesc;
5697 /* We need a function descriptor for a local symbol. */
5698 local_funcdesc = sh_elf_local_funcdesc (abfd);
5699 if (local_funcdesc == NULL)
5701 bfd_size_type size;
5703 size = symtab_hdr->sh_info * sizeof (union gotref);
5704 local_funcdesc = (union gotref *) bfd_zalloc (abfd, size);
5705 if (local_funcdesc == NULL)
5706 return FALSE;
5707 sh_elf_local_funcdesc (abfd) = local_funcdesc;
5709 local_funcdesc[r_symndx].refcount += 1;
5711 if (r_type == R_SH_FUNCDESC)
5713 if (!bfd_link_pic (info))
5714 htab->srofixup->size += 4;
5715 else
5716 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
5719 else
5721 sh_elf_hash_entry (h)->funcdesc.refcount++;
5722 if (r_type == R_SH_FUNCDESC)
5723 sh_elf_hash_entry (h)->abs_funcdesc_refcount++;
5725 /* If there is a function descriptor reference, then
5726 there should not be any non-FDPIC references. */
5727 old_got_type = sh_elf_hash_entry (h)->got_type;
5728 if (old_got_type != GOT_FUNCDESC && old_got_type != GOT_UNKNOWN)
5730 if (old_got_type == GOT_NORMAL)
5731 _bfd_error_handler
5732 /* xgettext:c-format */
5733 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5734 abfd, h->root.root.string);
5735 else
5736 _bfd_error_handler
5737 /* xgettext:c-format */
5738 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5739 abfd, h->root.root.string);
5742 break;
5744 case R_SH_GOTPLT32:
5745 /* If this is a local symbol, we resolve it directly without
5746 creating a procedure linkage table entry. */
5748 if (h == NULL
5749 || h->forced_local
5750 || ! bfd_link_pic (info)
5751 || info->symbolic
5752 || h->dynindx == -1)
5753 goto force_got;
5755 h->needs_plt = 1;
5756 h->plt.refcount += 1;
5757 ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5759 break;
5761 case R_SH_PLT32:
5762 /* This symbol requires a procedure linkage table entry. We
5763 actually build the entry in adjust_dynamic_symbol,
5764 because this might be a case of linking PIC code which is
5765 never referenced by a dynamic object, in which case we
5766 don't need to generate a procedure linkage table entry
5767 after all. */
5769 /* If this is a local symbol, we resolve it directly without
5770 creating a procedure linkage table entry. */
5771 if (h == NULL)
5772 continue;
5774 if (h->forced_local)
5775 break;
5777 h->needs_plt = 1;
5778 h->plt.refcount += 1;
5779 break;
5781 case R_SH_DIR32:
5782 case R_SH_REL32:
5783 if (h != NULL && ! bfd_link_pic (info))
5785 h->non_got_ref = 1;
5786 h->plt.refcount += 1;
5789 /* If we are creating a shared library, and this is a reloc
5790 against a global symbol, or a non PC relative reloc
5791 against a local symbol, then we need to copy the reloc
5792 into the shared library. However, if we are linking with
5793 -Bsymbolic, we do not need to copy a reloc against a
5794 global symbol which is defined in an object we are
5795 including in the link (i.e., DEF_REGULAR is set). At
5796 this point we have not seen all the input files, so it is
5797 possible that DEF_REGULAR is not set now but will be set
5798 later (it is never cleared). We account for that
5799 possibility below by storing information in the
5800 dyn_relocs field of the hash table entry. A similar
5801 situation occurs when creating shared libraries and symbol
5802 visibility changes render the symbol local.
5804 If on the other hand, we are creating an executable, we
5805 may need to keep relocations for symbols satisfied by a
5806 dynamic library if we manage to avoid copy relocs for the
5807 symbol. */
5808 if ((bfd_link_pic (info)
5809 && (sec->flags & SEC_ALLOC) != 0
5810 && (r_type != R_SH_REL32
5811 || (h != NULL
5812 && (! info->symbolic
5813 || h->root.type == bfd_link_hash_defweak
5814 || !h->def_regular))))
5815 || (! bfd_link_pic (info)
5816 && (sec->flags & SEC_ALLOC) != 0
5817 && h != NULL
5818 && (h->root.type == bfd_link_hash_defweak
5819 || !h->def_regular)))
5821 struct elf_dyn_relocs *p;
5822 struct elf_dyn_relocs **head;
5824 if (htab->root.dynobj == NULL)
5825 htab->root.dynobj = abfd;
5827 /* When creating a shared object, we must copy these
5828 reloc types into the output file. We create a reloc
5829 section in dynobj and make room for this reloc. */
5830 if (sreloc == NULL)
5832 sreloc = _bfd_elf_make_dynamic_reloc_section
5833 (sec, htab->root.dynobj, 2, abfd, /*rela?*/ TRUE);
5835 if (sreloc == NULL)
5836 return FALSE;
5839 /* If this is a global symbol, we count the number of
5840 relocations we need for this symbol. */
5841 if (h != NULL)
5842 head = &((struct elf_sh_link_hash_entry *) h)->dyn_relocs;
5843 else
5845 /* Track dynamic relocs needed for local syms too. */
5846 asection *s;
5847 void *vpp;
5848 Elf_Internal_Sym *isym;
5850 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5851 abfd, r_symndx);
5852 if (isym == NULL)
5853 return FALSE;
5855 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5856 if (s == NULL)
5857 s = sec;
5859 vpp = &elf_section_data (s)->local_dynrel;
5860 head = (struct elf_dyn_relocs **) vpp;
5863 p = *head;
5864 if (p == NULL || p->sec != sec)
5866 bfd_size_type amt = sizeof (*p);
5867 p = bfd_alloc (htab->root.dynobj, amt);
5868 if (p == NULL)
5869 return FALSE;
5870 p->next = *head;
5871 *head = p;
5872 p->sec = sec;
5873 p->count = 0;
5874 p->pc_count = 0;
5877 p->count += 1;
5878 if (r_type == R_SH_REL32)
5879 p->pc_count += 1;
5882 /* Allocate the fixup regardless of whether we need a relocation.
5883 If we end up generating the relocation, we'll unallocate the
5884 fixup. */
5885 if (htab->fdpic_p && !bfd_link_pic (info)
5886 && r_type == R_SH_DIR32
5887 && (sec->flags & SEC_ALLOC) != 0)
5888 htab->srofixup->size += 4;
5889 break;
5891 case R_SH_TLS_LE_32:
5892 if (bfd_link_dll (info))
5894 _bfd_error_handler
5895 (_("%pB: TLS local exec code cannot be linked into shared objects"),
5896 abfd);
5897 return FALSE;
5900 break;
5902 case R_SH_TLS_LDO_32:
5903 /* Nothing to do. */
5904 break;
5906 default:
5907 break;
5911 return TRUE;
5914 #ifndef sh_elf_set_mach_from_flags
5915 static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5917 static bfd_boolean
5918 sh_elf_set_mach_from_flags (bfd *abfd)
5920 flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5922 if (flags >= ARRAY_SIZE (sh_ef_bfd_table))
5923 return FALSE;
5925 if (sh_ef_bfd_table[flags] == 0)
5926 return FALSE;
5928 bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5930 return TRUE;
5934 /* Reverse table lookup for sh_ef_bfd_table[].
5935 Given a bfd MACH value from archures.c
5936 return the equivalent ELF flags from the table.
5937 Return -1 if no match is found. */
5940 sh_elf_get_flags_from_mach (unsigned long mach)
5942 int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5944 for (; i>0; i--)
5945 if (sh_ef_bfd_table[i] == mach)
5946 return i;
5948 /* shouldn't get here */
5949 BFD_FAIL();
5951 return -1;
5953 #endif /* not sh_elf_set_mach_from_flags */
5955 #ifndef sh_elf_copy_private_data
5956 /* Copy backend specific data from one object module to another */
5958 static bfd_boolean
5959 sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5961 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5962 return TRUE;
5964 if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd))
5965 return FALSE;
5967 return sh_elf_set_mach_from_flags (obfd);
5969 #endif /* not sh_elf_copy_private_data */
5971 #ifndef sh_elf_merge_private_data
5973 /* This function returns the ELF architecture number that
5974 corresponds to the given arch_sh* flags. */
5977 sh_find_elf_flags (unsigned int arch_set)
5979 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5980 unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5982 return sh_elf_get_flags_from_mach (bfd_mach);
5985 /* Merge the architecture type of two BFD files, such that the
5986 resultant architecture supports all the features required
5987 by the two input BFDs.
5988 If the input BFDs are multually incompatible - i.e. one uses
5989 DSP while the other uses FPU - or there is no known architecture
5990 that fits the requirements then an error is emitted. */
5992 static bfd_boolean
5993 sh_merge_bfd_arch (bfd *ibfd, struct bfd_link_info *info)
5995 bfd *obfd = info->output_bfd;
5996 unsigned int old_arch, new_arch, merged_arch;
5998 if (! _bfd_generic_verify_endian_match (ibfd, info))
5999 return FALSE;
6001 old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
6002 new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));
6004 merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);
6006 if (!SH_VALID_CO_ARCH_SET (merged_arch))
6008 _bfd_error_handler
6009 /* xgettext:c-format */
6010 (_("%pB: uses %s instructions while previous modules "
6011 "use %s instructions"),
6012 ibfd,
6013 SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
6014 SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
6015 bfd_set_error (bfd_error_bad_value);
6016 return FALSE;
6018 else if (!SH_VALID_ARCH_SET (merged_arch))
6020 _bfd_error_handler
6021 /* xgettext:c-format */
6022 (_("internal error: merge of architecture '%s' with "
6023 "architecture '%s' produced unknown architecture"),
6024 bfd_printable_name (obfd),
6025 bfd_printable_name (ibfd));
6026 bfd_set_error (bfd_error_bad_value);
6027 return FALSE;
6030 bfd_default_set_arch_mach (obfd, bfd_arch_sh,
6031 sh_get_bfd_mach_from_arch_set (merged_arch));
6033 return TRUE;
6036 /* This routine initialises the elf flags when required and
6037 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
6039 static bfd_boolean
6040 sh_elf_merge_private_data (bfd *ibfd, struct bfd_link_info *info)
6042 bfd *obfd = info->output_bfd;
6044 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
6045 return TRUE;
6047 if (! elf_flags_init (obfd))
6049 /* This happens when ld starts out with a 'blank' output file. */
6050 elf_flags_init (obfd) = TRUE;
6051 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
6052 sh_elf_set_mach_from_flags (obfd);
6053 if (elf_elfheader (obfd)->e_flags & EF_SH_FDPIC)
6054 elf_elfheader (obfd)->e_flags &= ~EF_SH_PIC;
6057 if (! sh_merge_bfd_arch (ibfd, info))
6059 _bfd_error_handler (_("%pB: uses instructions which are incompatible "
6060 "with instructions used in previous modules"),
6061 ibfd);
6062 bfd_set_error (bfd_error_bad_value);
6063 return FALSE;
6066 elf_elfheader (obfd)->e_flags &= ~EF_SH_MACH_MASK;
6067 elf_elfheader (obfd)->e_flags |=
6068 sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
6070 if (fdpic_object_p (ibfd) != fdpic_object_p (obfd))
6072 _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"),
6073 ibfd);
6074 bfd_set_error (bfd_error_bad_value);
6075 return FALSE;
6078 return TRUE;
6080 #endif /* not sh_elf_merge_private_data */
6082 /* Override the generic function because we need to store sh_elf_obj_tdata
6083 as the specific tdata. We set also the machine architecture from flags
6084 here. */
6086 static bfd_boolean
6087 sh_elf_object_p (bfd *abfd)
6089 if (! sh_elf_set_mach_from_flags (abfd))
6090 return FALSE;
6092 return (((elf_elfheader (abfd)->e_flags & EF_SH_FDPIC) != 0)
6093 == fdpic_object_p (abfd));
6096 /* Finish up dynamic symbol handling. We set the contents of various
6097 dynamic sections here. */
6099 static bfd_boolean
6100 sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
6101 struct elf_link_hash_entry *h,
6102 Elf_Internal_Sym *sym)
6104 struct elf_sh_link_hash_table *htab;
6106 htab = sh_elf_hash_table (info);
6107 if (htab == NULL)
6108 return FALSE;
6110 if (h->plt.offset != (bfd_vma) -1)
6112 asection *splt;
6113 asection *sgotplt;
6114 asection *srelplt;
6116 bfd_vma plt_index;
6117 bfd_vma got_offset;
6118 Elf_Internal_Rela rel;
6119 bfd_byte *loc;
6120 const struct elf_sh_plt_info *plt_info;
6122 /* This symbol has an entry in the procedure linkage table. Set
6123 it up. */
6125 BFD_ASSERT (h->dynindx != -1);
6127 splt = htab->root.splt;
6128 sgotplt = htab->root.sgotplt;
6129 srelplt = htab->root.srelplt;
6130 BFD_ASSERT (splt != NULL && sgotplt != NULL && srelplt != NULL);
6132 /* Get the index in the procedure linkage table which
6133 corresponds to this symbol. This is the index of this symbol
6134 in all the symbols for which we are making plt entries. The
6135 first entry in the procedure linkage table is reserved. */
6136 plt_index = get_plt_index (htab->plt_info, h->plt.offset);
6138 plt_info = htab->plt_info;
6139 if (plt_info->short_plt != NULL && plt_index <= MAX_SHORT_PLT)
6140 plt_info = plt_info->short_plt;
6142 /* Get the offset into the .got table of the entry that
6143 corresponds to this function. */
6144 if (htab->fdpic_p)
6145 /* The offset must be relative to the GOT symbol, twelve bytes
6146 before the end of .got.plt. Each descriptor is eight
6147 bytes. */
6148 got_offset = plt_index * 8 + 12 - sgotplt->size;
6149 else
6150 /* Each .got entry is 4 bytes. The first three are
6151 reserved. */
6152 got_offset = (plt_index + 3) * 4;
6154 #ifdef GOT_BIAS
6155 if (bfd_link_pic (info))
6156 got_offset -= GOT_BIAS;
6157 #endif
6159 /* Fill in the entry in the procedure linkage table. */
6160 memcpy (splt->contents + h->plt.offset,
6161 plt_info->symbol_entry,
6162 plt_info->symbol_entry_size);
6164 if (bfd_link_pic (info) || htab->fdpic_p)
6166 if (plt_info->symbol_fields.got20)
6168 bfd_reloc_status_type r;
6169 r = install_movi20_field (output_bfd, got_offset,
6170 splt->owner, splt, splt->contents,
6171 h->plt.offset
6172 + plt_info->symbol_fields.got_entry);
6173 BFD_ASSERT (r == bfd_reloc_ok);
6175 else
6176 install_plt_field (output_bfd, FALSE, got_offset,
6177 (splt->contents
6178 + h->plt.offset
6179 + plt_info->symbol_fields.got_entry));
6181 else
6183 BFD_ASSERT (!plt_info->symbol_fields.got20);
6185 install_plt_field (output_bfd, FALSE,
6186 (sgotplt->output_section->vma
6187 + sgotplt->output_offset
6188 + got_offset),
6189 (splt->contents
6190 + h->plt.offset
6191 + plt_info->symbol_fields.got_entry));
6192 if (htab->vxworks_p)
6194 unsigned int reachable_plts, plts_per_4k;
6195 int distance;
6197 /* Divide the PLT into groups. The first group contains
6198 REACHABLE_PLTS entries and the other groups contain
6199 PLTS_PER_4K entries. Entries in the first group can
6200 branch directly to .plt; those in later groups branch
6201 to the last element of the previous group. */
6202 /* ??? It would be better to create multiple copies of
6203 the common resolver stub. */
6204 reachable_plts = ((4096
6205 - plt_info->plt0_entry_size
6206 - (plt_info->symbol_fields.plt + 4))
6207 / plt_info->symbol_entry_size) + 1;
6208 plts_per_4k = (4096 / plt_info->symbol_entry_size);
6209 if (plt_index < reachable_plts)
6210 distance = -(h->plt.offset
6211 + plt_info->symbol_fields.plt);
6212 else
6213 distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
6214 * plt_info->symbol_entry_size);
6216 /* Install the 'bra' with this offset. */
6217 bfd_put_16 (output_bfd,
6218 0xa000 | (0x0fff & ((distance - 4) / 2)),
6219 (splt->contents
6220 + h->plt.offset
6221 + plt_info->symbol_fields.plt));
6223 else
6224 install_plt_field (output_bfd, TRUE,
6225 splt->output_section->vma + splt->output_offset,
6226 (splt->contents
6227 + h->plt.offset
6228 + plt_info->symbol_fields.plt));
6231 /* Make got_offset relative to the start of .got.plt. */
6232 #ifdef GOT_BIAS
6233 if (bfd_link_pic (info))
6234 got_offset += GOT_BIAS;
6235 #endif
6236 if (htab->fdpic_p)
6237 got_offset = plt_index * 8;
6239 if (plt_info->symbol_fields.reloc_offset != MINUS_ONE)
6240 install_plt_field (output_bfd, FALSE,
6241 plt_index * sizeof (Elf32_External_Rela),
6242 (splt->contents
6243 + h->plt.offset
6244 + plt_info->symbol_fields.reloc_offset));
6246 /* Fill in the entry in the global offset table. */
6247 bfd_put_32 (output_bfd,
6248 (splt->output_section->vma
6249 + splt->output_offset
6250 + h->plt.offset
6251 + plt_info->symbol_resolve_offset),
6252 sgotplt->contents + got_offset);
6253 if (htab->fdpic_p)
6254 bfd_put_32 (output_bfd,
6255 sh_elf_osec_to_segment (output_bfd, splt->output_section),
6256 sgotplt->contents + got_offset + 4);
6258 /* Fill in the entry in the .rela.plt section. */
6259 rel.r_offset = (sgotplt->output_section->vma
6260 + sgotplt->output_offset
6261 + got_offset);
6262 if (htab->fdpic_p)
6263 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_FUNCDESC_VALUE);
6264 else
6265 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
6266 rel.r_addend = 0;
6267 #ifdef GOT_BIAS
6268 rel.r_addend = GOT_BIAS;
6269 #endif
6270 loc = srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
6271 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6273 if (htab->vxworks_p && !bfd_link_pic (info))
6275 /* Create the .rela.plt.unloaded relocations for this PLT entry.
6276 Begin by pointing LOC to the first such relocation. */
6277 loc = (htab->srelplt2->contents
6278 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
6280 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
6281 for the PLT entry's pointer to the .got.plt entry. */
6282 rel.r_offset = (splt->output_section->vma
6283 + splt->output_offset
6284 + h->plt.offset
6285 + plt_info->symbol_fields.got_entry);
6286 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6287 rel.r_addend = got_offset;
6288 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6289 loc += sizeof (Elf32_External_Rela);
6291 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
6292 the .got.plt entry, which initially points to .plt. */
6293 rel.r_offset = (sgotplt->output_section->vma
6294 + sgotplt->output_offset
6295 + got_offset);
6296 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
6297 rel.r_addend = 0;
6298 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6301 if (!h->def_regular)
6303 /* Mark the symbol as undefined, rather than as defined in
6304 the .plt section. Leave the value alone. */
6305 sym->st_shndx = SHN_UNDEF;
6309 if (h->got.offset != (bfd_vma) -1
6310 && sh_elf_hash_entry (h)->got_type != GOT_TLS_GD
6311 && sh_elf_hash_entry (h)->got_type != GOT_TLS_IE
6312 && sh_elf_hash_entry (h)->got_type != GOT_FUNCDESC)
6314 asection *sgot;
6315 asection *srelgot;
6316 Elf_Internal_Rela rel;
6317 bfd_byte *loc;
6319 /* This symbol has an entry in the global offset table. Set it
6320 up. */
6322 sgot = htab->root.sgot;
6323 srelgot = htab->root.srelgot;
6324 BFD_ASSERT (sgot != NULL && srelgot != NULL);
6326 rel.r_offset = (sgot->output_section->vma
6327 + sgot->output_offset
6328 + (h->got.offset &~ (bfd_vma) 1));
6330 /* If this is a static link, or it is a -Bsymbolic link and the
6331 symbol is defined locally or was forced to be local because
6332 of a version file, we just want to emit a RELATIVE reloc.
6333 The entry in the global offset table will already have been
6334 initialized in the relocate_section function. */
6335 if (bfd_link_pic (info)
6336 && SYMBOL_REFERENCES_LOCAL (info, h))
6338 if (htab->fdpic_p)
6340 asection *sec = h->root.u.def.section;
6341 int dynindx
6342 = elf_section_data (sec->output_section)->dynindx;
6344 rel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
6345 rel.r_addend = (h->root.u.def.value
6346 + h->root.u.def.section->output_offset);
6348 else
6350 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
6351 rel.r_addend = (h->root.u.def.value
6352 + h->root.u.def.section->output_section->vma
6353 + h->root.u.def.section->output_offset);
6356 else
6358 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
6359 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
6360 rel.r_addend = 0;
6363 loc = srelgot->contents;
6364 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
6365 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6368 if (h->needs_copy)
6370 asection *s;
6371 Elf_Internal_Rela rel;
6372 bfd_byte *loc;
6374 /* This symbol needs a copy reloc. Set it up. */
6376 BFD_ASSERT (h->dynindx != -1
6377 && (h->root.type == bfd_link_hash_defined
6378 || h->root.type == bfd_link_hash_defweak));
6380 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
6381 BFD_ASSERT (s != NULL);
6383 rel.r_offset = (h->root.u.def.value
6384 + h->root.u.def.section->output_section->vma
6385 + h->root.u.def.section->output_offset);
6386 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
6387 rel.r_addend = 0;
6388 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6389 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6392 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
6393 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
6394 ".got" section. */
6395 if (h == htab->root.hdynamic
6396 || (!htab->vxworks_p && h == htab->root.hgot))
6397 sym->st_shndx = SHN_ABS;
6399 return TRUE;
6402 /* Finish up the dynamic sections. */
6404 static bfd_boolean
6405 sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
6407 struct elf_sh_link_hash_table *htab;
6408 asection *sgotplt;
6409 asection *sdyn;
6411 htab = sh_elf_hash_table (info);
6412 if (htab == NULL)
6413 return FALSE;
6415 sgotplt = htab->root.sgotplt;
6416 sdyn = bfd_get_linker_section (htab->root.dynobj, ".dynamic");
6418 if (htab->root.dynamic_sections_created)
6420 asection *splt;
6421 Elf32_External_Dyn *dyncon, *dynconend;
6423 BFD_ASSERT (sgotplt != NULL && sdyn != NULL);
6425 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6426 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6427 for (; dyncon < dynconend; dyncon++)
6429 Elf_Internal_Dyn dyn;
6430 asection *s;
6432 bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
6434 switch (dyn.d_tag)
6436 default:
6437 if (htab->vxworks_p
6438 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
6439 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6440 break;
6442 case DT_PLTGOT:
6443 BFD_ASSERT (htab->root.hgot != NULL);
6444 s = htab->root.hgot->root.u.def.section;
6445 dyn.d_un.d_ptr = htab->root.hgot->root.u.def.value
6446 + s->output_section->vma + s->output_offset;
6447 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6448 break;
6450 case DT_JMPREL:
6451 s = htab->root.srelplt->output_section;
6452 BFD_ASSERT (s != NULL);
6453 dyn.d_un.d_ptr = s->vma;
6454 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6455 break;
6457 case DT_PLTRELSZ:
6458 s = htab->root.srelplt->output_section;
6459 BFD_ASSERT (s != NULL);
6460 dyn.d_un.d_val = s->size;
6461 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6462 break;
6466 /* Fill in the first entry in the procedure linkage table. */
6467 splt = htab->root.splt;
6468 if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
6470 unsigned int i;
6472 memcpy (splt->contents,
6473 htab->plt_info->plt0_entry,
6474 htab->plt_info->plt0_entry_size);
6475 for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
6476 if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
6477 install_plt_field (output_bfd, FALSE,
6478 (sgotplt->output_section->vma
6479 + sgotplt->output_offset
6480 + (i * 4)),
6481 (splt->contents
6482 + htab->plt_info->plt0_got_fields[i]));
6484 if (htab->vxworks_p)
6486 /* Finalize the .rela.plt.unloaded contents. */
6487 Elf_Internal_Rela rel;
6488 bfd_byte *loc;
6490 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
6491 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
6492 loc = htab->srelplt2->contents;
6493 rel.r_offset = (splt->output_section->vma
6494 + splt->output_offset
6495 + htab->plt_info->plt0_got_fields[2]);
6496 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6497 rel.r_addend = 8;
6498 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6499 loc += sizeof (Elf32_External_Rela);
6501 /* Fix up the remaining .rela.plt.unloaded relocations.
6502 They may have the wrong symbol index for _G_O_T_ or
6503 _P_L_T_ depending on the order in which symbols were
6504 output. */
6505 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
6507 /* The PLT entry's pointer to the .got.plt slot. */
6508 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6509 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
6510 R_SH_DIR32);
6511 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6512 loc += sizeof (Elf32_External_Rela);
6514 /* The .got.plt slot's pointer to .plt. */
6515 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6516 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
6517 R_SH_DIR32);
6518 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6519 loc += sizeof (Elf32_External_Rela);
6523 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6524 really seem like the right value. */
6525 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
6529 /* Fill in the first three entries in the global offset table. */
6530 if (sgotplt && sgotplt->size > 0 && !htab->fdpic_p)
6532 if (sdyn == NULL)
6533 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents);
6534 else
6535 bfd_put_32 (output_bfd,
6536 sdyn->output_section->vma + sdyn->output_offset,
6537 sgotplt->contents);
6538 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4);
6539 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8);
6542 if (sgotplt && sgotplt->size > 0)
6543 elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4;
6545 /* At the very end of the .rofixup section is a pointer to the GOT. */
6546 if (htab->fdpic_p && htab->srofixup != NULL)
6548 struct elf_link_hash_entry *hgot = htab->root.hgot;
6549 bfd_vma got_value = hgot->root.u.def.value
6550 + hgot->root.u.def.section->output_section->vma
6551 + hgot->root.u.def.section->output_offset;
6553 sh_elf_add_rofixup (output_bfd, htab->srofixup, got_value);
6555 /* Make sure we allocated and generated the same number of fixups. */
6556 BFD_ASSERT (htab->srofixup->reloc_count * 4 == htab->srofixup->size);
6559 if (htab->srelfuncdesc)
6560 BFD_ASSERT (htab->srelfuncdesc->reloc_count * sizeof (Elf32_External_Rela)
6561 == htab->srelfuncdesc->size);
6563 if (htab->root.srelgot)
6564 BFD_ASSERT (htab->root.srelgot->reloc_count * sizeof (Elf32_External_Rela)
6565 == htab->root.srelgot->size);
6567 return TRUE;
6570 static enum elf_reloc_type_class
6571 sh_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
6572 const asection *rel_sec ATTRIBUTE_UNUSED,
6573 const Elf_Internal_Rela *rela)
6575 switch ((int) ELF32_R_TYPE (rela->r_info))
6577 case R_SH_RELATIVE:
6578 return reloc_class_relative;
6579 case R_SH_JMP_SLOT:
6580 return reloc_class_plt;
6581 case R_SH_COPY:
6582 return reloc_class_copy;
6583 default:
6584 return reloc_class_normal;
6588 #if !defined SH_TARGET_ALREADY_DEFINED
6589 /* Support for Linux core dump NOTE sections. */
6591 static bfd_boolean
6592 elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
6594 int offset;
6595 unsigned int size;
6597 switch (note->descsz)
6599 default:
6600 return FALSE;
6602 case 168: /* Linux/SH */
6603 /* pr_cursig */
6604 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
6606 /* pr_pid */
6607 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
6609 /* pr_reg */
6610 offset = 72;
6611 size = 92;
6613 break;
6616 /* Make a ".reg/999" section. */
6617 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
6618 size, note->descpos + offset);
6621 static bfd_boolean
6622 elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
6624 switch (note->descsz)
6626 default:
6627 return FALSE;
6629 case 124: /* Linux/SH elf_prpsinfo */
6630 elf_tdata (abfd)->core->program
6631 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
6632 elf_tdata (abfd)->core->command
6633 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
6636 /* Note that for some reason, a spurious space is tacked
6637 onto the end of the args in some (at least one anyway)
6638 implementations, so strip it off if it exists. */
6641 char *command = elf_tdata (abfd)->core->command;
6642 int n = strlen (command);
6644 if (0 < n && command[n - 1] == ' ')
6645 command[n - 1] = '\0';
6648 return TRUE;
6650 #endif /* not SH_TARGET_ALREADY_DEFINED */
6653 /* Return address for Ith PLT stub in section PLT, for relocation REL
6654 or (bfd_vma) -1 if it should not be included. */
6656 static bfd_vma
6657 sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6658 const arelent *rel ATTRIBUTE_UNUSED)
6660 const struct elf_sh_plt_info *plt_info;
6662 plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6663 return plt->vma + get_plt_offset (plt_info, i);
6666 /* Decide whether to attempt to turn absptr or lsda encodings in
6667 shared libraries into pcrel within the given input section. */
6669 static bfd_boolean
6670 sh_elf_use_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED,
6671 struct bfd_link_info *info,
6672 asection *eh_frame_section ATTRIBUTE_UNUSED)
6674 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6676 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
6677 if (htab->fdpic_p)
6678 return FALSE;
6680 return TRUE;
6683 /* Adjust the contents of an eh_frame_hdr section before they're output. */
6685 static bfd_byte
6686 sh_elf_encode_eh_address (bfd *abfd,
6687 struct bfd_link_info *info,
6688 asection *osec, bfd_vma offset,
6689 asection *loc_sec, bfd_vma loc_offset,
6690 bfd_vma *encoded)
6692 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6693 struct elf_link_hash_entry *h;
6695 if (!htab->fdpic_p)
6696 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, loc_sec,
6697 loc_offset, encoded);
6699 h = htab->root.hgot;
6700 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
6702 if (! h || (sh_elf_osec_to_segment (abfd, osec)
6703 == sh_elf_osec_to_segment (abfd, loc_sec->output_section)))
6704 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
6705 loc_sec, loc_offset, encoded);
6707 BFD_ASSERT (sh_elf_osec_to_segment (abfd, osec)
6708 == (sh_elf_osec_to_segment
6709 (abfd, h->root.u.def.section->output_section)));
6711 *encoded = osec->vma + offset
6712 - (h->root.u.def.value
6713 + h->root.u.def.section->output_section->vma
6714 + h->root.u.def.section->output_offset);
6716 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
6719 #if !defined SH_TARGET_ALREADY_DEFINED
6720 #define TARGET_BIG_SYM sh_elf32_vec
6721 #define TARGET_BIG_NAME "elf32-sh"
6722 #define TARGET_LITTLE_SYM sh_elf32_le_vec
6723 #define TARGET_LITTLE_NAME "elf32-shl"
6724 #endif
6726 #define ELF_ARCH bfd_arch_sh
6727 #define ELF_TARGET_ID SH_ELF_DATA
6728 #define ELF_MACHINE_CODE EM_SH
6729 #ifdef __QNXTARGET__
6730 #define ELF_MAXPAGESIZE 0x1000
6731 #else
6732 #define ELF_MAXPAGESIZE 0x80
6733 #endif
6735 #define elf_symbol_leading_char '_'
6737 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6738 #define bfd_elf32_bfd_reloc_name_lookup \
6739 sh_elf_reloc_name_lookup
6740 #define elf_info_to_howto sh_elf_info_to_howto
6741 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6742 #define elf_backend_relocate_section sh_elf_relocate_section
6743 #define bfd_elf32_bfd_get_relocated_section_contents \
6744 sh_elf_get_relocated_section_contents
6745 #define bfd_elf32_mkobject sh_elf_mkobject
6746 #define elf_backend_object_p sh_elf_object_p
6747 #define bfd_elf32_bfd_copy_private_bfd_data \
6748 sh_elf_copy_private_data
6749 #define bfd_elf32_bfd_merge_private_bfd_data \
6750 sh_elf_merge_private_data
6752 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6753 #define elf_backend_check_relocs sh_elf_check_relocs
6754 #define elf_backend_copy_indirect_symbol \
6755 sh_elf_copy_indirect_symbol
6756 #define elf_backend_create_dynamic_sections \
6757 sh_elf_create_dynamic_sections
6758 #define bfd_elf32_bfd_link_hash_table_create \
6759 sh_elf_link_hash_table_create
6760 #define elf_backend_adjust_dynamic_symbol \
6761 sh_elf_adjust_dynamic_symbol
6762 #define elf_backend_always_size_sections \
6763 sh_elf_always_size_sections
6764 #define elf_backend_size_dynamic_sections \
6765 sh_elf_size_dynamic_sections
6766 #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
6767 #define elf_backend_finish_dynamic_symbol \
6768 sh_elf_finish_dynamic_symbol
6769 #define elf_backend_finish_dynamic_sections \
6770 sh_elf_finish_dynamic_sections
6771 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6772 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6773 #define elf_backend_can_make_relative_eh_frame \
6774 sh_elf_use_relative_eh_frame
6775 #define elf_backend_can_make_lsda_relative_eh_frame \
6776 sh_elf_use_relative_eh_frame
6777 #define elf_backend_encode_eh_address \
6778 sh_elf_encode_eh_address
6780 #define elf_backend_stack_align 8
6781 #define elf_backend_can_gc_sections 1
6782 #define elf_backend_can_refcount 1
6783 #define elf_backend_want_got_plt 1
6784 #define elf_backend_plt_readonly 1
6785 #define elf_backend_want_plt_sym 0
6786 #define elf_backend_got_header_size 12
6787 #define elf_backend_dtrel_excludes_plt 1
6789 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
6791 #if !defined SH_TARGET_ALREADY_DEFINED
6793 #include "elf32-target.h"
6795 /* NetBSD support. */
6796 #undef TARGET_BIG_SYM
6797 #define TARGET_BIG_SYM sh_elf32_nbsd_vec
6798 #undef TARGET_BIG_NAME
6799 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6800 #undef TARGET_LITTLE_SYM
6801 #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
6802 #undef TARGET_LITTLE_NAME
6803 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6804 #undef ELF_MAXPAGESIZE
6805 #define ELF_MAXPAGESIZE 0x10000
6806 #undef ELF_COMMONPAGESIZE
6807 #undef elf_symbol_leading_char
6808 #define elf_symbol_leading_char 0
6809 #undef elf32_bed
6810 #define elf32_bed elf32_sh_nbsd_bed
6812 #include "elf32-target.h"
6815 /* Linux support. */
6816 #undef TARGET_BIG_SYM
6817 #define TARGET_BIG_SYM sh_elf32_linux_be_vec
6818 #undef TARGET_BIG_NAME
6819 #define TARGET_BIG_NAME "elf32-shbig-linux"
6820 #undef TARGET_LITTLE_SYM
6821 #define TARGET_LITTLE_SYM sh_elf32_linux_vec
6822 #undef TARGET_LITTLE_NAME
6823 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6824 #undef ELF_COMMONPAGESIZE
6825 #define ELF_COMMONPAGESIZE 0x1000
6827 #undef elf_backend_grok_prstatus
6828 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6829 #undef elf_backend_grok_psinfo
6830 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6831 #undef elf32_bed
6832 #define elf32_bed elf32_sh_lin_bed
6834 #include "elf32-target.h"
6837 /* FDPIC support. */
6838 #undef TARGET_BIG_SYM
6839 #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
6840 #undef TARGET_BIG_NAME
6841 #define TARGET_BIG_NAME "elf32-shbig-fdpic"
6842 #undef TARGET_LITTLE_SYM
6843 #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
6844 #undef TARGET_LITTLE_NAME
6845 #define TARGET_LITTLE_NAME "elf32-sh-fdpic"
6847 #undef elf32_bed
6848 #define elf32_bed elf32_sh_fd_bed
6850 #include "elf32-target.h"
6852 /* VxWorks support. */
6853 #undef TARGET_BIG_SYM
6854 #define TARGET_BIG_SYM sh_elf32_vxworks_vec
6855 #undef TARGET_BIG_NAME
6856 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6857 #undef TARGET_LITTLE_SYM
6858 #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
6859 #undef TARGET_LITTLE_NAME
6860 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6861 #undef elf32_bed
6862 #define elf32_bed elf32_sh_vxworks_bed
6864 #undef elf_backend_want_plt_sym
6865 #define elf_backend_want_plt_sym 1
6866 #undef elf_symbol_leading_char
6867 #define elf_symbol_leading_char '_'
6868 #define elf_backend_want_got_underscore 1
6869 #undef elf_backend_grok_prstatus
6870 #undef elf_backend_grok_psinfo
6871 #undef elf_backend_add_symbol_hook
6872 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6873 #undef elf_backend_link_output_symbol_hook
6874 #define elf_backend_link_output_symbol_hook \
6875 elf_vxworks_link_output_symbol_hook
6876 #undef elf_backend_emit_relocs
6877 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6878 #undef elf_backend_final_write_processing
6879 #define elf_backend_final_write_processing \
6880 elf_vxworks_final_write_processing
6881 #undef ELF_MAXPAGESIZE
6882 #define ELF_MAXPAGESIZE 0x1000
6883 #undef ELF_COMMONPAGESIZE
6885 #include "elf32-target.h"
6887 #endif /* not SH_TARGET_ALREADY_DEFINED */