1 /* BFD back-end for Renesas H8/300 ELF binaries.
2 Copyright (C) 1993-2018 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
27 static reloc_howto_type *elf32_h8_reloc_type_lookup
28 (bfd *abfd, bfd_reloc_code_real_type code);
29 static bfd_boolean elf32_h8_info_to_howto
30 (bfd *, arelent *, Elf_Internal_Rela *);
31 static bfd_boolean elf32_h8_info_to_howto_rel
32 (bfd *, arelent *, Elf_Internal_Rela *);
33 static unsigned long elf32_h8_mach (flagword);
34 static void elf32_h8_final_write_processing (bfd *, bfd_boolean);
35 static bfd_boolean elf32_h8_object_p (bfd *);
36 static bfd_boolean elf32_h8_merge_private_bfd_data
37 (bfd *, struct bfd_link_info *);
38 static bfd_boolean elf32_h8_relax_section
39 (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
40 static bfd_boolean elf32_h8_relax_delete_bytes
41 (bfd *, asection *, bfd_vma, int);
42 static bfd_boolean elf32_h8_symbol_address_p (bfd *, asection *, bfd_vma);
43 static bfd_byte *elf32_h8_get_relocated_section_contents
44 (bfd *, struct bfd_link_info *, struct bfd_link_order *,
45 bfd_byte *, bfd_boolean, asymbol **);
46 static bfd_reloc_status_type elf32_h8_final_link_relocate
47 (unsigned long, bfd *, bfd *, asection *,
48 bfd_byte *, bfd_vma, bfd_vma, bfd_vma,
49 struct bfd_link_info *, asection *, int);
50 static bfd_boolean elf32_h8_relocate_section
51 (bfd *, struct bfd_link_info *, bfd *, asection *,
52 bfd_byte *, Elf_Internal_Rela *,
53 Elf_Internal_Sym *, asection **);
54 static bfd_reloc_status_type special
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
57 /* This does not include any relocation information, but should be
58 good enough for GDB or objdump to read the file. */
60 static reloc_howto_type h8_elf_howto_table[] =
63 HOWTO (R_H8_NONE, /* type */
65 3, /* size (0 = byte, 1 = short, 2 = long) */
67 FALSE, /* pc_relative */
69 complain_overflow_dont,/* complain_on_overflow */
70 special, /* special_function */
71 "R_H8_NONE", /* name */
72 FALSE, /* partial_inplace */
75 FALSE), /* pcrel_offset */
76 #define R_H8_DIR32_X (R_H8_NONE_X + 1)
77 HOWTO (R_H8_DIR32, /* type */
79 2, /* size (0 = byte, 1 = short, 2 = long) */
81 FALSE, /* pc_relative */
83 complain_overflow_dont,/* complain_on_overflow */
84 special, /* special_function */
85 "R_H8_DIR32", /* name */
86 FALSE, /* partial_inplace */
88 0xffffffff, /* dst_mask */
89 FALSE), /* pcrel_offset */
90 #define R_H8_DIR16_X (R_H8_DIR32_X + 1)
91 HOWTO (R_H8_DIR16, /* type */
93 1, /* size (0 = byte, 1 = short, 2 = long) */
95 FALSE, /* pc_relative */
97 complain_overflow_dont,/* complain_on_overflow */
98 special, /* special_function */
99 "R_H8_DIR16", /* name */
100 FALSE, /* partial_inplace */
102 0x0000ffff, /* dst_mask */
103 FALSE), /* pcrel_offset */
104 #define R_H8_DIR8_X (R_H8_DIR16_X + 1)
105 HOWTO (R_H8_DIR8, /* type */
107 0, /* size (0 = byte, 1 = short, 2 = long) */
109 FALSE, /* pc_relative */
111 complain_overflow_dont,/* complain_on_overflow */
112 special, /* special_function */
113 "R_H8_DIR8", /* name */
114 FALSE, /* partial_inplace */
116 0x000000ff, /* dst_mask */
117 FALSE), /* pcrel_offset */
118 #define R_H8_DIR16A8_X (R_H8_DIR8_X + 1)
119 HOWTO (R_H8_DIR16A8, /* type */
121 1, /* size (0 = byte, 1 = short, 2 = long) */
123 FALSE, /* pc_relative */
125 complain_overflow_bitfield, /* complain_on_overflow */
126 special, /* special_function */
127 "R_H8_DIR16A8", /* name */
128 FALSE, /* partial_inplace */
130 0x0000ffff, /* dst_mask */
131 FALSE), /* pcrel_offset */
132 #define R_H8_DIR16R8_X (R_H8_DIR16A8_X + 1)
133 HOWTO (R_H8_DIR16R8, /* type */
135 1, /* size (0 = byte, 1 = short, 2 = long) */
137 FALSE, /* pc_relative */
139 complain_overflow_bitfield, /* complain_on_overflow */
140 special, /* special_function */
141 "R_H8_DIR16R8", /* name */
142 FALSE, /* partial_inplace */
144 0x0000ffff, /* dst_mask */
145 FALSE), /* pcrel_offset */
146 #define R_H8_DIR24A8_X (R_H8_DIR16R8_X + 1)
147 HOWTO (R_H8_DIR24A8, /* type */
149 2, /* size (0 = byte, 1 = short, 2 = long) */
151 FALSE, /* pc_relative */
153 complain_overflow_bitfield, /* complain_on_overflow */
154 special, /* special_function */
155 "R_H8_DIR24A8", /* name */
156 TRUE, /* partial_inplace */
157 0xff000000, /* src_mask */
158 0x00ffffff, /* dst_mask */
159 FALSE), /* pcrel_offset */
160 #define R_H8_DIR24R8_X (R_H8_DIR24A8_X + 1)
161 HOWTO (R_H8_DIR24R8, /* type */
163 2, /* size (0 = byte, 1 = short, 2 = long) */
165 FALSE, /* pc_relative */
167 complain_overflow_bitfield, /* complain_on_overflow */
168 special, /* special_function */
169 "R_H8_DIR24R8", /* name */
170 TRUE, /* partial_inplace */
171 0xff000000, /* src_mask */
172 0x00ffffff, /* dst_mask */
173 FALSE), /* pcrel_offset */
174 #define R_H8_DIR32A16_X (R_H8_DIR24R8_X + 1)
175 HOWTO (R_H8_DIR32A16, /* type */
177 2, /* size (0 = byte, 1 = short, 2 = long) */
179 FALSE, /* pc_relative */
181 complain_overflow_dont,/* complain_on_overflow */
182 special, /* special_function */
183 "R_H8_DIR32A16", /* name */
184 FALSE, /* partial_inplace */
186 0xffffffff, /* dst_mask */
187 FALSE), /* pcrel_offset */
188 #define R_H8_DISP32A16_X (R_H8_DIR32A16_X + 1)
189 HOWTO (R_H8_DISP32A16, /* type */
191 2, /* size (0 = byte, 1 = short, 2 = long) */
193 FALSE, /* pc_relative */
195 complain_overflow_dont,/* complain_on_overflow */
196 special, /* special_function */
197 "R_H8_DISP32A16", /* name */
198 FALSE, /* partial_inplace */
200 0xffffffff, /* dst_mask */
201 FALSE), /* pcrel_offset */
202 #define R_H8_PCREL16_X (R_H8_DISP32A16_X + 1)
203 HOWTO (R_H8_PCREL16, /* type */
205 1, /* size (0 = byte, 1 = short, 2 = long) */
207 TRUE, /* pc_relative */
209 complain_overflow_signed,/* complain_on_overflow */
210 special, /* special_function */
211 "R_H8_PCREL16", /* name */
212 FALSE, /* partial_inplace */
213 0xffff, /* src_mask */
214 0xffff, /* dst_mask */
215 TRUE), /* pcrel_offset */
216 #define R_H8_PCREL8_X (R_H8_PCREL16_X + 1)
217 HOWTO (R_H8_PCREL8, /* type */
219 0, /* size (0 = byte, 1 = short, 2 = long) */
221 TRUE, /* pc_relative */
223 complain_overflow_signed,/* complain_on_overflow */
224 special, /* special_function */
225 "R_H8_PCREL8", /* name */
226 FALSE, /* partial_inplace */
229 TRUE), /* pcrel_offset */
232 /* This structure is used to map BFD reloc codes to H8 ELF relocs. */
234 struct elf_reloc_map {
235 bfd_reloc_code_real_type bfd_reloc_val;
236 unsigned char howto_index;
239 /* An array mapping BFD reloc codes to H8 ELF relocs. */
241 static const struct elf_reloc_map h8_reloc_map[] = {
242 { BFD_RELOC_NONE, R_H8_NONE_X },
243 { BFD_RELOC_32, R_H8_DIR32_X },
244 { BFD_RELOC_16, R_H8_DIR16_X },
245 { BFD_RELOC_8, R_H8_DIR8_X },
246 { BFD_RELOC_H8_DIR16A8, R_H8_DIR16A8_X },
247 { BFD_RELOC_H8_DIR16R8, R_H8_DIR16R8_X },
248 { BFD_RELOC_H8_DIR24A8, R_H8_DIR24A8_X },
249 { BFD_RELOC_H8_DIR24R8, R_H8_DIR24R8_X },
250 { BFD_RELOC_H8_DIR32A16, R_H8_DIR32A16_X },
251 { BFD_RELOC_H8_DISP32A16, R_H8_DISP32A16_X },
252 { BFD_RELOC_16_PCREL, R_H8_PCREL16_X },
253 { BFD_RELOC_8_PCREL, R_H8_PCREL8_X },
257 static reloc_howto_type *
258 elf32_h8_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
259 bfd_reloc_code_real_type code)
263 for (i = 0; i < sizeof (h8_reloc_map) / sizeof (struct elf_reloc_map); i++)
265 if (h8_reloc_map[i].bfd_reloc_val == code)
266 return &h8_elf_howto_table[(int) h8_reloc_map[i].howto_index];
271 static reloc_howto_type *
272 elf32_h8_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
278 i < sizeof (h8_elf_howto_table) / sizeof (h8_elf_howto_table[0]);
280 if (h8_elf_howto_table[i].name != NULL
281 && strcasecmp (h8_elf_howto_table[i].name, r_name) == 0)
282 return &h8_elf_howto_table[i];
288 elf32_h8_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
289 Elf_Internal_Rela *elf_reloc)
294 r = ELF32_R_TYPE (elf_reloc->r_info);
295 for (i = 0; i < sizeof (h8_elf_howto_table) / sizeof (reloc_howto_type); i++)
296 if (h8_elf_howto_table[i].type == r)
298 bfd_reloc->howto = &h8_elf_howto_table[i];
301 /* xgettext:c-format */
302 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r);
303 bfd_set_error (bfd_error_bad_value);
308 elf32_h8_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
309 arelent *bfd_reloc ATTRIBUTE_UNUSED,
310 Elf_Internal_Rela *elf_reloc ATTRIBUTE_UNUSED)
315 /* Special handling for H8/300 relocs.
316 We only come here for pcrel stuff and return normally if not an -r link.
317 When doing -r, we can't do any arithmetic for the pcrel stuff, because
318 we support relaxing on the H8/300 series chips. */
319 static bfd_reloc_status_type
320 special (bfd *abfd ATTRIBUTE_UNUSED,
321 arelent *reloc_entry ATTRIBUTE_UNUSED,
322 asymbol *symbol ATTRIBUTE_UNUSED,
323 void * data ATTRIBUTE_UNUSED,
324 asection *input_section ATTRIBUTE_UNUSED,
326 char **error_message ATTRIBUTE_UNUSED)
328 if (output_bfd == (bfd *) NULL)
329 return bfd_reloc_continue;
331 /* Adjust the reloc address to that in the output section. */
332 reloc_entry->address += input_section->output_offset;
336 /* Perform a relocation as part of a final link. */
337 static bfd_reloc_status_type
338 elf32_h8_final_link_relocate (unsigned long r_type, bfd *input_bfd,
339 bfd *output_bfd ATTRIBUTE_UNUSED,
340 asection *input_section ATTRIBUTE_UNUSED,
341 bfd_byte *contents, bfd_vma offset,
342 bfd_vma value, bfd_vma addend,
343 struct bfd_link_info *info ATTRIBUTE_UNUSED,
344 asection *sym_sec ATTRIBUTE_UNUSED,
345 int is_local ATTRIBUTE_UNUSED)
347 bfd_byte *hit_data = contents + offset;
359 bfd_put_32 (input_bfd, value, hit_data);
366 bfd_put_16 (input_bfd, value, hit_data);
373 bfd_put_8 (input_bfd, value, hit_data);
379 /* HIT_DATA is the address for the first byte for the relocated
380 value. Subtract 1 so that we can manipulate the data in 32-bit
384 /* Clear out the top byte in value. */
387 /* Retrieve the type byte for value from the section contents. */
388 value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
390 /* Now scribble it out in one 32-bit hunk. */
391 bfd_put_32 (input_bfd, value, hit_data);
395 value -= (input_section->output_section->vma
396 + input_section->output_offset);
400 /* The value is relative to the start of the instruction,
401 not the relocation offset. Subtract 2 to account for
405 bfd_put_16 (input_bfd, value, hit_data);
409 value -= (input_section->output_section->vma
410 + input_section->output_offset);
414 /* The value is relative to the start of the instruction,
415 not the relocation offset. Subtract 1 to account for
419 bfd_put_8 (input_bfd, value, hit_data);
423 return bfd_reloc_notsupported;
427 /* Relocate an H8 ELF section. */
429 elf32_h8_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
430 bfd *input_bfd, asection *input_section,
431 bfd_byte *contents, Elf_Internal_Rela *relocs,
432 Elf_Internal_Sym *local_syms,
433 asection **local_sections)
435 Elf_Internal_Shdr *symtab_hdr;
436 struct elf_link_hash_entry **sym_hashes;
437 Elf_Internal_Rela *rel, *relend;
439 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
440 sym_hashes = elf_sym_hashes (input_bfd);
443 relend = relocs + input_section->reloc_count;
444 for (; rel < relend; rel++)
447 unsigned long r_symndx;
448 Elf_Internal_Sym *sym;
450 struct elf_link_hash_entry *h;
452 bfd_reloc_status_type r;
454 reloc_howto_type *howto;
456 if (! elf32_h8_info_to_howto (input_bfd, &bfd_reloc, rel))
458 howto = bfd_reloc.howto;
460 r_symndx = ELF32_R_SYM (rel->r_info);
461 r_type = ELF32_R_TYPE (rel->r_info);
465 if (r_symndx < symtab_hdr->sh_info)
467 sym = local_syms + r_symndx;
468 sec = local_sections[r_symndx];
469 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
473 bfd_boolean unresolved_reloc, warned, ignored;
475 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
476 r_symndx, symtab_hdr, sym_hashes,
478 unresolved_reloc, warned, ignored);
481 if (sec != NULL && discarded_section (sec))
482 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
483 rel, 1, relend, howto, 0, contents);
485 if (bfd_link_relocatable (info))
488 r = elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd,
490 contents, rel->r_offset,
491 relocation, rel->r_addend,
492 info, sec, h == NULL);
494 if (r != bfd_reloc_ok)
497 const char *msg = (const char *) 0;
500 name = h->root.root.string;
503 name = (bfd_elf_string_from_elf_section
504 (input_bfd, symtab_hdr->sh_link, sym->st_name));
505 if (name == NULL || *name == '\0')
506 name = bfd_section_name (input_bfd, sec);
511 case bfd_reloc_overflow:
512 (*info->callbacks->reloc_overflow)
513 (info, (h ? &h->root : NULL), name, howto->name,
514 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
517 case bfd_reloc_undefined:
518 (*info->callbacks->undefined_symbol)
519 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
522 case bfd_reloc_outofrange:
523 msg = _("internal error: out of range error");
526 case bfd_reloc_notsupported:
527 msg = _("internal error: unsupported relocation error");
530 case bfd_reloc_dangerous:
531 msg = _("internal error: dangerous error");
535 msg = _("internal error: unknown error");
539 (*info->callbacks->warning) (info, msg, name, input_bfd,
540 input_section, rel->r_offset);
549 /* Object files encode the specific H8 model they were compiled
550 for in the ELF flags field.
552 Examine that field and return the proper BFD machine type for
555 elf32_h8_mach (flagword flags)
557 switch (flags & EF_H8_MACH)
559 case E_H8_MACH_H8300:
561 return bfd_mach_h8300;
563 case E_H8_MACH_H8300H:
564 return bfd_mach_h8300h;
566 case E_H8_MACH_H8300S:
567 return bfd_mach_h8300s;
569 case E_H8_MACH_H8300HN:
570 return bfd_mach_h8300hn;
572 case E_H8_MACH_H8300SN:
573 return bfd_mach_h8300sn;
575 case E_H8_MACH_H8300SX:
576 return bfd_mach_h8300sx;
578 case E_H8_MACH_H8300SXN:
579 return bfd_mach_h8300sxn;
583 /* The final processing done just before writing out a H8 ELF object
584 file. We use this opportunity to encode the BFD machine type
585 into the flags field in the object file. */
588 elf32_h8_final_write_processing (bfd *abfd,
589 bfd_boolean linker ATTRIBUTE_UNUSED)
593 switch (bfd_get_mach (abfd))
597 val = E_H8_MACH_H8300;
600 case bfd_mach_h8300h:
601 val = E_H8_MACH_H8300H;
604 case bfd_mach_h8300s:
605 val = E_H8_MACH_H8300S;
608 case bfd_mach_h8300hn:
609 val = E_H8_MACH_H8300HN;
612 case bfd_mach_h8300sn:
613 val = E_H8_MACH_H8300SN;
616 case bfd_mach_h8300sx:
617 val = E_H8_MACH_H8300SX;
620 case bfd_mach_h8300sxn:
621 val = E_H8_MACH_H8300SXN;
625 elf_elfheader (abfd)->e_flags &= ~ (EF_H8_MACH);
626 elf_elfheader (abfd)->e_flags |= val;
629 /* Return nonzero if ABFD represents a valid H8 ELF object file; also
630 record the encoded machine type found in the ELF flags. */
633 elf32_h8_object_p (bfd *abfd)
635 bfd_default_set_arch_mach (abfd, bfd_arch_h8300,
636 elf32_h8_mach (elf_elfheader (abfd)->e_flags));
640 /* Merge backend specific data from an object file to the output
641 object file when linking. The only data we need to copy at this
642 time is the architecture/machine information. */
645 elf32_h8_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
647 bfd *obfd = info->output_bfd;
649 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
650 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
653 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
654 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
656 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
657 bfd_get_mach (ibfd)))
664 /* This function handles relaxing for the H8..
666 There are a few relaxing opportunities available on the H8:
668 jmp/jsr:24 -> bra/bsr:8 2 bytes
669 The jmp may be completely eliminated if the previous insn is a
670 conditional branch to the insn after the jump. In that case
671 we invert the branch and delete the jump and save 4 bytes.
673 bCC:16 -> bCC:8 2 bytes
674 bsr:16 -> bsr:8 2 bytes
676 bset:16 -> bset:8 2 bytes
677 bset:24/32 -> bset:8 4 bytes
678 (also applicable to other bit manipulation instructions)
680 mov.b:16 -> mov.b:8 2 bytes
681 mov.b:24/32 -> mov.b:8 4 bytes
683 bset:24/32 -> bset:16 2 bytes
684 (also applicable to other bit manipulation instructions)
686 mov.[bwl]:24/32 -> mov.[bwl]:16 2 bytes
688 mov.[bwl] @(displ:24/32+ERx) -> mov.[bwl] @(displ:16+ERx) 4 bytes. */
691 elf32_h8_relax_section (bfd *abfd, asection *sec,
692 struct bfd_link_info *link_info, bfd_boolean *again)
694 Elf_Internal_Shdr *symtab_hdr;
695 Elf_Internal_Rela *internal_relocs;
696 Elf_Internal_Rela *irel, *irelend;
697 bfd_byte *contents = NULL;
698 Elf_Internal_Sym *isymbuf = NULL;
699 static asection *last_input_section = NULL;
700 static Elf_Internal_Rela *last_reloc = NULL;
702 /* Assume nothing changes. */
705 /* We don't have to do anything for a relocatable link, if
706 this section does not have relocs, or if this is not a
708 if (bfd_link_relocatable (link_info)
709 || (sec->flags & SEC_RELOC) == 0
710 || sec->reloc_count == 0
711 || (sec->flags & SEC_CODE) == 0)
714 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
716 /* Get a copy of the native relocations. */
717 internal_relocs = (_bfd_elf_link_read_relocs
718 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
719 link_info->keep_memory));
720 if (internal_relocs == NULL)
723 if (sec != last_input_section)
726 last_input_section = sec;
728 /* Walk through the relocs looking for relaxing opportunities. */
729 irelend = internal_relocs + sec->reloc_count;
730 for (irel = internal_relocs; irel < irelend; irel++)
737 if (! elf32_h8_info_to_howto (abfd, &bfd_reloc, irel))
740 /* Keep track of the previous reloc so that we can delete
741 some long jumps created by the compiler. */
742 if (irel != internal_relocs)
743 last_reloc = irel - 1;
745 switch(ELF32_R_TYPE (irel->r_info))
758 /* Get the section contents if we haven't done so already. */
759 if (contents == NULL)
761 /* Get cached copy if it exists. */
762 if (elf_section_data (sec)->this_hdr.contents != NULL)
763 contents = elf_section_data (sec)->this_hdr.contents;
766 /* Go get them off disk. */
767 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
772 /* Read this BFD's local symbols if we haven't done so already. */
773 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
775 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
777 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
778 symtab_hdr->sh_info, 0,
784 /* Get the value of the symbol referred to by the reloc. */
785 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
787 /* A local symbol. */
788 Elf_Internal_Sym *isym;
791 isym = isymbuf + ELF32_R_SYM (irel->r_info);
792 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
793 symval = isym->st_value;
794 /* If the reloc is absolute, it will not have
795 a symbol or section associated with it. */
797 symval += sym_sec->output_section->vma
798 + sym_sec->output_offset;
803 struct elf_link_hash_entry *h;
805 /* An external symbol. */
806 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
807 h = elf_sym_hashes (abfd)[indx];
808 BFD_ASSERT (h != NULL);
809 if (h->root.type != bfd_link_hash_defined
810 && h->root.type != bfd_link_hash_defweak)
812 /* This appears to be a reference to an undefined
813 symbol. Just ignore it--it will be caught by the
814 regular reloc processing. */
818 symval = (h->root.u.def.value
819 + h->root.u.def.section->output_section->vma
820 + h->root.u.def.section->output_offset);
823 /* For simplicity of coding, we are going to modify the section
824 contents, the section relocs, and the BFD symbol table. We
825 must tell the rest of the code not to free up this
826 information. It would be possible to instead create a table
827 of changes which have to be made, as is done in coff-mips.c;
828 that would be more work, but would require less memory when
829 the linker is run. */
830 switch (ELF32_R_TYPE (irel->r_info))
832 /* Try to turn a 24-bit absolute branch/call into an 8-bit
833 pc-relative branch/call. */
836 bfd_vma value = symval + irel->r_addend;
839 /* Get the address of this instruction. */
840 dot = (sec->output_section->vma
841 + sec->output_offset + irel->r_offset - 1);
843 /* Compute the distance from this insn to the branch target. */
846 /* If the distance is within -126..+130 inclusive, then we can
847 relax this jump. +130 is valid since the target will move
848 two bytes closer if we do relax this branch. */
849 if ((int) gap >= -126 && (int) gap <= 130)
853 /* Note that we've changed the relocs, section contents,
855 elf_section_data (sec)->relocs = internal_relocs;
856 elf_section_data (sec)->this_hdr.contents = contents;
857 symtab_hdr->contents = (unsigned char *) isymbuf;
859 /* Get the instruction code being relaxed. */
860 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
862 /* If the previous instruction conditionally jumped around
863 this instruction, we may be able to reverse the condition
864 and redirect the previous instruction to the target of
867 Such sequences are used by the compiler to deal with
868 long conditional branches.
870 Only perform this optimisation for jumps (code 0x5a) not
871 subroutine calls, as otherwise it could transform:
884 which changes the call (jsr) into a branch (bne). */
885 if (code == 0x5a /* jmp24. */
889 && ELF32_R_TYPE (last_reloc->r_info) == R_H8_PCREL8
890 && ELF32_R_SYM (last_reloc->r_info) < symtab_hdr->sh_info)
893 asection *last_sym_sec;
894 Elf_Internal_Sym *last_sym;
896 /* We will need to examine the symbol used by the
897 previous relocation. */
899 last_sym = isymbuf + ELF32_R_SYM (last_reloc->r_info);
901 = bfd_section_from_elf_index (abfd, last_sym->st_shndx);
902 last_value = (last_sym->st_value
903 + last_sym_sec->output_section->vma
904 + last_sym_sec->output_offset);
906 /* Verify that the previous relocation was for a
907 branch around this instruction and that no symbol
908 exists at the current location. */
909 if (last_value == dot + 4
910 && last_reloc->r_offset + 2 == irel->r_offset
911 && ! elf32_h8_symbol_address_p (abfd, sec, dot))
913 /* We can eliminate this jump. Twiddle the
914 previous relocation as necessary. */
916 = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
917 ELF32_R_TYPE (R_H8_NONE));
920 = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
921 ELF32_R_TYPE (R_H8_PCREL8));
922 last_reloc->r_addend = irel->r_addend;
924 code = bfd_get_8 (abfd,
925 contents + last_reloc->r_offset - 1);
929 contents + last_reloc->r_offset - 1);
931 /* Delete four bytes of data. */
932 if (!elf32_h8_relax_delete_bytes (abfd, sec,
944 bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 1); /* bsr8. */
945 else if (code == 0x5a)
947 bfd_put_8 (abfd, 0x40, contents + irel->r_offset - 1); /* bra8. */
951 /* Fix the relocation's type. */
952 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
955 /* Delete two bytes of data. */
956 if (!elf32_h8_relax_delete_bytes (abfd, sec,
957 irel->r_offset + 1, 2))
960 /* That will change things, so, we should relax again.
961 Note that this is not required, and it may be slow. */
967 /* Try to turn a 16-bit pc-relative branch into a 8-bit pc-relative
971 bfd_vma value = symval + irel->r_addend;
975 /* Get the address of this instruction. */
976 dot = (sec->output_section->vma
978 + irel->r_offset - 2);
982 /* If the distance is within -126..+130 inclusive, then we can
983 relax this jump. +130 is valid since the target will move
984 two bytes closer if we do relax this branch. */
985 if ((int) gap >= -126 && (int) gap <= 130)
989 /* Note that we've changed the relocs, section contents,
991 elf_section_data (sec)->relocs = internal_relocs;
992 elf_section_data (sec)->this_hdr.contents = contents;
993 symtab_hdr->contents = (unsigned char *) isymbuf;
995 /* Get the opcode. */
996 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
1000 /* bCC:16 -> bCC:8 */
1001 /* Get the second byte of the original insn, which
1002 contains the condition code. */
1003 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1005 /* Compute the first byte of the relaxed
1006 instruction. The original sequence 0x58 0xX0
1007 is relaxed to 0x4X, where X represents the
1012 bfd_put_8 (abfd, code, contents + irel->r_offset - 2); /* bCC:8. */
1014 else if (code == 0x5c) /* bsr16. */
1016 bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 2); /* bsr8. */
1018 /* Might be MOVSD. */
1021 /* Fix the relocation's type. */
1022 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1026 /* Delete two bytes of data. */
1027 if (!elf32_h8_relax_delete_bytes (abfd, sec,
1028 irel->r_offset + 1, 2))
1031 /* That will change things, so, we should relax again.
1032 Note that this is not required, and it may be slow. */
1038 /* This is a 16-bit absolute address in one of the following
1041 "band", "bclr", "biand", "bild", "bior", "bist", "bixor",
1042 "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and
1045 We may relax this into an 8-bit absolute address if it's in
1051 value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
1052 if (value >= 0xffffff00u)
1055 unsigned char temp_code;
1057 /* Note that we've changed the relocs, section contents,
1059 elf_section_data (sec)->relocs = internal_relocs;
1060 elf_section_data (sec)->this_hdr.contents = contents;
1061 symtab_hdr->contents = (unsigned char *) isymbuf;
1063 /* Get the opcode. */
1064 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
1066 /* All instructions with R_H8_DIR16A8 start with
1071 temp_code = code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1072 /* If this is a mov.b instruction, clear the lower
1073 nibble, which contains the source/destination
1075 if ((temp_code & 0x10) != 0x10)
1081 /* This is mov.b @aa:16,Rd. */
1082 bfd_put_8 (abfd, (code & 0xf) | 0x20,
1083 contents + irel->r_offset - 2);
1086 /* This is mov.b Rs,@aa:16. */
1087 bfd_put_8 (abfd, (code & 0xf) | 0x30,
1088 contents + irel->r_offset - 2);
1091 /* This is a bit-maniputation instruction that
1092 stores one bit into memory, one of "bclr",
1093 "bist", "bnot", "bset", and "bst". */
1094 bfd_put_8 (abfd, 0x7f, contents + irel->r_offset - 2);
1097 /* This is a bit-maniputation instruction that
1098 loads one bit from memory, one of "band",
1099 "biand", "bild", "bior", "bixor", "bld", "bor",
1100 "btst", and "bxor". */
1101 bfd_put_8 (abfd, 0x7e, contents + irel->r_offset - 2);
1107 /* Fix the relocation's type. */
1108 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1111 /* Move the relocation. */
1114 /* Delete two bytes of data. */
1115 if (!elf32_h8_relax_delete_bytes (abfd, sec,
1116 irel->r_offset + 1, 2))
1119 /* That will change things, so, we should relax again.
1120 Note that this is not required, and it may be slow. */
1126 /* This is a 24-bit absolute address in one of the following
1129 "band", "bclr", "biand", "bild", "bior", "bist", "bixor",
1130 "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and
1133 We may relax this into an 8-bit absolute address if it's in
1139 value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
1140 if (value >= 0xffffff00u)
1143 unsigned char temp_code;
1145 /* Note that we've changed the relocs, section contents,
1147 elf_section_data (sec)->relocs = internal_relocs;
1148 elf_section_data (sec)->this_hdr.contents = contents;
1149 symtab_hdr->contents = (unsigned char *) isymbuf;
1151 /* Get the opcode. */
1152 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
1154 /* All instructions with R_H8_DIR24A8 start with
1159 temp_code = code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1161 /* If this is a mov.b instruction, clear the lower
1162 nibble, which contains the source/destination
1164 if ((temp_code & 0x30) != 0x30)
1170 /* This is mov.b @aa:24/32,Rd. */
1171 bfd_put_8 (abfd, (code & 0xf) | 0x20,
1172 contents + irel->r_offset - 2);
1175 /* This is mov.b Rs,@aa:24/32. */
1176 bfd_put_8 (abfd, (code & 0xf) | 0x30,
1177 contents + irel->r_offset - 2);
1180 /* This is a bit-maniputation instruction that
1181 stores one bit into memory, one of "bclr",
1182 "bist", "bnot", "bset", and "bst". */
1183 bfd_put_8 (abfd, 0x7f, contents + irel->r_offset - 2);
1186 /* This is a bit-maniputation instruction that
1187 loads one bit from memory, one of "band",
1188 "biand", "bild", "bior", "bixor", "bld", "bor",
1189 "btst", and "bxor". */
1190 bfd_put_8 (abfd, 0x7e, contents + irel->r_offset - 2);
1196 /* Fix the relocation's type. */
1197 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1201 /* Delete four bytes of data. */
1202 if (!elf32_h8_relax_delete_bytes (abfd, sec,
1203 irel->r_offset + 1, 4))
1206 /* That will change things, so, we should relax again.
1207 Note that this is not required, and it may be slow. */
1215 /* This is a 24-/32-bit absolute address in one of the
1216 following instructions:
1218 "band", "bclr", "biand", "bild", "bior", "bist",
1219 "bixor", "bld", "bnot", "bor", "bset", "bst", "btst",
1220 "bxor", "ldc.w", "stc.w" and "mov.[bwl]"
1222 We may relax this into an 16-bit absolute address if it's
1223 in the right range. */
1228 value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
1229 if (value <= 0x7fff || value >= 0xffff8000u)
1232 unsigned char op0, op1, op2, op3;
1233 unsigned char *op_ptr;
1235 /* Note that we've changed the relocs, section contents,
1237 elf_section_data (sec)->relocs = internal_relocs;
1238 elf_section_data (sec)->this_hdr.contents = contents;
1239 symtab_hdr->contents = (unsigned char *) isymbuf;
1241 if (irel->r_offset >= 4)
1243 /* Check for 4-byte MOVA relaxation (SH-specific). */
1244 int second_reloc = 0;
1246 op_ptr = contents + irel->r_offset - 4;
1251 reloc_howto_type *h;
1252 bfd_vma last_reloc_size;
1254 if (! elf32_h8_info_to_howto (abfd, &bfd_reloc, last_reloc))
1256 h = bfd_reloc.howto;
1257 last_reloc_size = 1 << h->size;
1258 if (last_reloc->r_offset + last_reloc_size
1261 op_ptr -= last_reloc_size;
1266 if (irel + 1 < irelend)
1268 Elf_Internal_Rela *next_reloc = irel + 1;
1270 reloc_howto_type *h;
1271 bfd_vma next_reloc_size;
1273 if (! elf32_h8_info_to_howto (abfd, &bfd_reloc, next_reloc))
1275 h = bfd_reloc.howto;
1276 next_reloc_size = 1 << h->size;
1277 if (next_reloc->r_offset + next_reloc_size
1280 op_ptr -= next_reloc_size;
1285 op0 = bfd_get_8 (abfd, op_ptr + 0);
1286 op1 = bfd_get_8 (abfd, op_ptr + 1);
1287 op2 = bfd_get_8 (abfd, op_ptr + 2);
1288 op3 = bfd_get_8 (abfd, op_ptr + 3);
1291 && (op1 & 0xdf) == 0x5f
1292 && (op2 & 0x40) == 0x40
1293 && (op3 & 0x80) == 0x80)
1295 if ((op2 & 0x08) == 0)
1301 bfd_put_8 (abfd, op3, op_ptr + 3);
1306 bfd_put_8 (abfd, op2, op_ptr + 2);
1308 goto r_h8_dir32a16_common;
1312 /* Now check for short version of MOVA. (SH-specific) */
1313 op_ptr = contents + irel->r_offset - 2;
1314 op0 = bfd_get_8 (abfd, op_ptr + 0);
1315 op1 = bfd_get_8 (abfd, op_ptr + 1);
1318 && (op1 & 0x88) == 0x80)
1321 bfd_put_8 (abfd, op1, op_ptr + 1);
1322 goto r_h8_dir32a16_common;
1325 /* Get the opcode. */
1326 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1328 /* Fix the opcode. For all the instructions that
1329 belong to this relaxation, we simply need to turn
1330 off bit 0x20 in the previous byte. */
1333 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
1335 r_h8_dir32a16_common:
1336 /* Fix the relocation's type. */
1337 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1340 /* Delete two bytes of data. */
1341 if (!elf32_h8_relax_delete_bytes (abfd, sec,
1342 irel->r_offset + 1, 2))
1345 /* That will change things, so, we should relax again.
1346 Note that this is not required, and it may be slow. */
1349 break; /* case R_H8_DIR32A16 */
1352 case R_H8_DISP32A16:
1353 /* mov.[bwl] @(displ:24/32+ERx) -> mov.[bwl] @(displ:16+ERx) 4 bytes
1354 It is assured that instruction uses at least 4 bytes opcode before
1355 reloc entry addressing mode "register indirect with displacement"
1356 relaxing options (all saving 4 bytes):
1357 0x78 0sss0000 0x6A 0010dddd disp:32 mov.b @(d:32,ERs),Rd ->
1358 0x6E 0sssdddd disp:16 mov.b @(d:16,ERs),Rd
1359 0x78 0sss0000 0x6B 0010dddd disp:32 mov.w @(d:32,ERs),Rd ->
1360 0x6F 0sssdddd disp:16 mov.w @(d:16,ERs),Rd
1361 0x01 0x00 0x78 0sss0000 0x6B 00100ddd disp:32 mov.l @(d:32,ERs),ERd ->
1362 0x01 0x00 0x6F 0sss0ddd disp:16 mov.l @(d:16,ERs),ERd
1364 0x78 0ddd0000 0x6A 1010ssss disp:32 mov.b Rs,@(d:32,ERd) ->
1365 0x6E 1dddssss disp:16 mov.b Rs,@(d:16,ERd)
1366 0x78 0ddd0000 0x6B 1010ssss disp:32 mov.w Rs,@(d:32,ERd) ->
1367 0x6F 1dddssss disp:16 mov.w Rs,@(d:16,ERd)
1368 0x01 0x00 0x78 xddd0000 0x6B 10100sss disp:32 mov.l ERs,@(d:32,ERd) ->
1369 0x01 0x00 0x6F 1ddd0sss disp:16 mov.l ERs,@(d:16,ERd)
1370 mov.l prefix 0x01 0x00 can be left as is and mov.l handled same
1375 value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
1376 if (value <= 0x7fff || value >= 0xffff8000u)
1378 unsigned char op0, op1, op2, op3, op0n, op1n;
1381 /* Note that we've changed the relocs, section contents,
1383 elf_section_data (sec)->relocs = internal_relocs;
1384 elf_section_data (sec)->this_hdr.contents = contents;
1385 symtab_hdr->contents = (unsigned char *) isymbuf;
1387 if (irel->r_offset >= 4)
1389 op0 = bfd_get_8 (abfd, contents + irel->r_offset - 4);
1390 op1 = bfd_get_8 (abfd, contents + irel->r_offset - 3);
1391 op2 = bfd_get_8 (abfd, contents + irel->r_offset - 2);
1392 op3 = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1399 if ((op1 & 0x8F) == 0x00 && (op3 & 0x70) == 0x20)
1407 if ((op1 & 0x0F) == 0x00 && (op3 & 0x70) == 0x20)
1422 op1n = (op3 & 0x8F) | (op1 & 0x70);
1423 bfd_put_8 (abfd, op0n, contents + irel->r_offset - 4);
1424 bfd_put_8 (abfd, op1n, contents + irel->r_offset - 3);
1426 /* Fix the relocation's type. */
1427 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_H8_DIR16);
1428 irel->r_offset -= 2;
1430 /* Delete four bytes of data. */
1431 if (!elf32_h8_relax_delete_bytes (abfd, sec, irel->r_offset + 2, 4))
1434 /* That will change things, so, we should relax again.
1435 Note that this is not required, and it may be slow. */
1448 && symtab_hdr->contents != (unsigned char *) isymbuf)
1450 if (! link_info->keep_memory)
1453 symtab_hdr->contents = (unsigned char *) isymbuf;
1456 if (contents != NULL
1457 && elf_section_data (sec)->this_hdr.contents != contents)
1459 if (! link_info->keep_memory)
1463 /* Cache the section contents for elf_link_input_bfd. */
1464 elf_section_data (sec)->this_hdr.contents = contents;
1468 if (internal_relocs != NULL
1469 && elf_section_data (sec)->relocs != internal_relocs)
1470 free (internal_relocs);
1476 && symtab_hdr->contents != (unsigned char *) isymbuf)
1478 if (contents != NULL
1479 && elf_section_data (sec)->this_hdr.contents != contents)
1481 if (internal_relocs != NULL
1482 && elf_section_data (sec)->relocs != internal_relocs)
1483 free (internal_relocs);
1487 /* Delete some bytes from a section while relaxing. */
1490 elf32_h8_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count)
1492 Elf_Internal_Shdr *symtab_hdr;
1493 unsigned int sec_shndx;
1495 Elf_Internal_Rela *irel, *irelend;
1496 Elf_Internal_Sym *isym;
1497 Elf_Internal_Sym *isymend;
1499 struct elf_link_hash_entry **sym_hashes;
1500 struct elf_link_hash_entry **end_hashes;
1501 unsigned int symcount;
1503 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1505 contents = elf_section_data (sec)->this_hdr.contents;
1509 irel = elf_section_data (sec)->relocs;
1510 irelend = irel + sec->reloc_count;
1512 /* Actually delete the bytes. */
1513 memmove (contents + addr, contents + addr + count,
1514 (size_t) (toaddr - addr - count));
1517 /* Adjust all the relocs. */
1518 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
1520 /* Get the new reloc address. */
1521 if ((irel->r_offset > addr
1522 && irel->r_offset <= toaddr))
1523 irel->r_offset -= count;
1526 /* Adjust the local symbols defined in this section. */
1527 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1528 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
1529 isymend = isym + symtab_hdr->sh_info;
1530 for (; isym < isymend; isym++)
1532 if (isym->st_shndx == sec_shndx
1533 && isym->st_value > addr
1534 && isym->st_value <= toaddr)
1535 isym->st_value -= count;
1538 /* Now adjust the global symbols defined in this section. */
1539 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1540 - symtab_hdr->sh_info);
1541 sym_hashes = elf_sym_hashes (abfd);
1542 end_hashes = sym_hashes + symcount;
1543 for (; sym_hashes < end_hashes; sym_hashes++)
1545 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1547 if ((sym_hash->root.type == bfd_link_hash_defined
1548 || sym_hash->root.type == bfd_link_hash_defweak)
1549 && sym_hash->root.u.def.section == sec
1550 && sym_hash->root.u.def.value > addr
1551 && sym_hash->root.u.def.value <= toaddr)
1552 sym_hash->root.u.def.value -= count;
1558 /* Return TRUE if a symbol exists at the given address, else return
1561 elf32_h8_symbol_address_p (bfd *abfd, asection *sec, bfd_vma addr)
1563 Elf_Internal_Shdr *symtab_hdr;
1564 unsigned int sec_shndx;
1565 Elf_Internal_Sym *isym;
1566 Elf_Internal_Sym *isymend;
1567 struct elf_link_hash_entry **sym_hashes;
1568 struct elf_link_hash_entry **end_hashes;
1569 unsigned int symcount;
1571 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1573 /* Examine all the symbols. */
1574 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1575 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
1576 isymend = isym + symtab_hdr->sh_info;
1577 for (; isym < isymend; isym++)
1579 if (isym->st_shndx == sec_shndx
1580 && isym->st_value == addr)
1584 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1585 - symtab_hdr->sh_info);
1586 sym_hashes = elf_sym_hashes (abfd);
1587 end_hashes = sym_hashes + symcount;
1588 for (; sym_hashes < end_hashes; sym_hashes++)
1590 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1591 if ((sym_hash->root.type == bfd_link_hash_defined
1592 || sym_hash->root.type == bfd_link_hash_defweak)
1593 && sym_hash->root.u.def.section == sec
1594 && sym_hash->root.u.def.value == addr)
1601 /* This is a version of bfd_generic_get_relocated_section_contents
1602 which uses elf32_h8_relocate_section. */
1605 elf32_h8_get_relocated_section_contents (bfd *output_bfd,
1606 struct bfd_link_info *link_info,
1607 struct bfd_link_order *link_order,
1609 bfd_boolean relocatable,
1612 Elf_Internal_Shdr *symtab_hdr;
1613 asection *input_section = link_order->u.indirect.section;
1614 bfd *input_bfd = input_section->owner;
1615 asection **sections = NULL;
1616 Elf_Internal_Rela *internal_relocs = NULL;
1617 Elf_Internal_Sym *isymbuf = NULL;
1619 /* We only need to handle the case of relaxing, or of having a
1620 particular set of section contents, specially. */
1622 || elf_section_data (input_section)->this_hdr.contents == NULL)
1623 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
1628 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1630 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
1631 (size_t) input_section->size);
1633 if ((input_section->flags & SEC_RELOC) != 0
1634 && input_section->reloc_count > 0)
1637 Elf_Internal_Sym *isym, *isymend;
1640 internal_relocs = (_bfd_elf_link_read_relocs
1641 (input_bfd, input_section, NULL,
1642 (Elf_Internal_Rela *) NULL, FALSE));
1643 if (internal_relocs == NULL)
1646 if (symtab_hdr->sh_info != 0)
1648 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1649 if (isymbuf == NULL)
1650 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1651 symtab_hdr->sh_info, 0,
1653 if (isymbuf == NULL)
1657 amt = symtab_hdr->sh_info;
1658 amt *= sizeof (asection *);
1659 sections = (asection **) bfd_malloc (amt);
1660 if (sections == NULL && amt != 0)
1663 isymend = isymbuf + symtab_hdr->sh_info;
1664 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
1668 if (isym->st_shndx == SHN_UNDEF)
1669 isec = bfd_und_section_ptr;
1670 else if (isym->st_shndx == SHN_ABS)
1671 isec = bfd_abs_section_ptr;
1672 else if (isym->st_shndx == SHN_COMMON)
1673 isec = bfd_com_section_ptr;
1675 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
1680 if (! elf32_h8_relocate_section (output_bfd, link_info, input_bfd,
1681 input_section, data, internal_relocs,
1685 if (sections != NULL)
1688 && symtab_hdr->contents != (unsigned char *) isymbuf)
1690 if (elf_section_data (input_section)->relocs != internal_relocs)
1691 free (internal_relocs);
1697 if (sections != NULL)
1700 && symtab_hdr->contents != (unsigned char *) isymbuf)
1702 if (internal_relocs != NULL
1703 && elf_section_data (input_section)->relocs != internal_relocs)
1704 free (internal_relocs);
1709 #define TARGET_BIG_SYM h8300_elf32_vec
1710 #define TARGET_BIG_NAME "elf32-h8300"
1711 #define ELF_ARCH bfd_arch_h8300
1712 #define ELF_MACHINE_CODE EM_H8_300
1713 #define ELF_MAXPAGESIZE 0x1
1714 #define bfd_elf32_bfd_reloc_type_lookup elf32_h8_reloc_type_lookup
1715 #define bfd_elf32_bfd_reloc_name_lookup elf32_h8_reloc_name_lookup
1716 #define elf_info_to_howto elf32_h8_info_to_howto
1717 #define elf_info_to_howto_rel elf32_h8_info_to_howto_rel
1719 /* So we can set/examine bits in e_flags to get the specific
1720 H8 architecture in use. */
1721 #define elf_backend_final_write_processing \
1722 elf32_h8_final_write_processing
1723 #define elf_backend_object_p \
1725 #define bfd_elf32_bfd_merge_private_bfd_data \
1726 elf32_h8_merge_private_bfd_data
1728 /* ??? when elf_backend_relocate_section is not defined, elf32-target.h
1729 defaults to using _bfd_generic_link_hash_table_create, but
1730 bfd_elf_size_dynamic_sections uses
1731 dynobj = elf_hash_table (info)->dynobj;
1732 and thus requires an elf hash table. */
1733 #define bfd_elf32_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
1735 /* Use an H8 specific linker, not the ELF generic linker. */
1736 #define elf_backend_relocate_section elf32_h8_relocate_section
1737 #define elf_backend_rela_normal 1
1738 #define elf_backend_can_gc_sections 1
1740 /* And relaxing stuff. */
1741 #define bfd_elf32_bfd_relax_section elf32_h8_relax_section
1742 #define bfd_elf32_bfd_get_relocated_section_contents \
1743 elf32_h8_get_relocated_section_contents
1745 #define elf_symbol_leading_char '_'
1747 #include "elf32-target.h"
1749 #undef TARGET_BIG_SYM
1750 #define TARGET_BIG_SYM h8300_elf32_linux_vec
1751 #undef TARGET_BIG_NAME
1752 #define TARGET_BIG_NAME "elf32-h8300-linux"
1753 #undef elf_symbol_leading_char
1754 #define elf32_bed elf32_h8300_linux_bed
1756 #include "elf32-target.h"