1 /* BFD back-end for Renesas H8/300 ELF binaries.
2 Copyright (C) 1993-2019 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 bfd_boolean elf32_h8_object_p (bfd *);
35 static bfd_boolean elf32_h8_merge_private_bfd_data
36 (bfd *, struct bfd_link_info *);
37 static bfd_boolean elf32_h8_relax_section
38 (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
39 static bfd_boolean elf32_h8_relax_delete_bytes
40 (bfd *, asection *, bfd_vma, int);
41 static bfd_boolean elf32_h8_symbol_address_p (bfd *, asection *, bfd_vma);
42 static bfd_byte *elf32_h8_get_relocated_section_contents
43 (bfd *, struct bfd_link_info *, struct bfd_link_order *,
44 bfd_byte *, bfd_boolean, asymbol **);
45 static bfd_reloc_status_type elf32_h8_final_link_relocate
46 (unsigned long, bfd *, bfd *, asection *,
47 bfd_byte *, bfd_vma, bfd_vma, bfd_vma,
48 struct bfd_link_info *, asection *, int);
49 static bfd_boolean elf32_h8_relocate_section
50 (bfd *, struct bfd_link_info *, bfd *, asection *,
51 bfd_byte *, Elf_Internal_Rela *,
52 Elf_Internal_Sym *, asection **);
53 static bfd_reloc_status_type special
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 /* This does not include any relocation information, but should be
57 good enough for GDB or objdump to read the file. */
59 static reloc_howto_type h8_elf_howto_table[] =
62 HOWTO (R_H8_NONE, /* type */
64 3, /* size (0 = byte, 1 = short, 2 = long) */
66 FALSE, /* pc_relative */
68 complain_overflow_dont,/* complain_on_overflow */
69 special, /* special_function */
70 "R_H8_NONE", /* name */
71 FALSE, /* partial_inplace */
74 FALSE), /* pcrel_offset */
75 #define R_H8_DIR32_X (R_H8_NONE_X + 1)
76 HOWTO (R_H8_DIR32, /* type */
78 2, /* size (0 = byte, 1 = short, 2 = long) */
80 FALSE, /* pc_relative */
82 complain_overflow_dont,/* complain_on_overflow */
83 special, /* special_function */
84 "R_H8_DIR32", /* name */
85 FALSE, /* partial_inplace */
87 0xffffffff, /* dst_mask */
88 FALSE), /* pcrel_offset */
89 #define R_H8_DIR16_X (R_H8_DIR32_X + 1)
90 HOWTO (R_H8_DIR16, /* type */
92 1, /* size (0 = byte, 1 = short, 2 = long) */
94 FALSE, /* pc_relative */
96 complain_overflow_dont,/* complain_on_overflow */
97 special, /* special_function */
98 "R_H8_DIR16", /* name */
99 FALSE, /* partial_inplace */
101 0x0000ffff, /* dst_mask */
102 FALSE), /* pcrel_offset */
103 #define R_H8_DIR8_X (R_H8_DIR16_X + 1)
104 HOWTO (R_H8_DIR8, /* type */
106 0, /* size (0 = byte, 1 = short, 2 = long) */
108 FALSE, /* pc_relative */
110 complain_overflow_dont,/* complain_on_overflow */
111 special, /* special_function */
112 "R_H8_DIR8", /* name */
113 FALSE, /* partial_inplace */
115 0x000000ff, /* dst_mask */
116 FALSE), /* pcrel_offset */
117 #define R_H8_DIR16A8_X (R_H8_DIR8_X + 1)
118 HOWTO (R_H8_DIR16A8, /* type */
120 1, /* size (0 = byte, 1 = short, 2 = long) */
122 FALSE, /* pc_relative */
124 complain_overflow_bitfield, /* complain_on_overflow */
125 special, /* special_function */
126 "R_H8_DIR16A8", /* name */
127 FALSE, /* partial_inplace */
129 0x0000ffff, /* dst_mask */
130 FALSE), /* pcrel_offset */
131 #define R_H8_DIR16R8_X (R_H8_DIR16A8_X + 1)
132 HOWTO (R_H8_DIR16R8, /* type */
134 1, /* size (0 = byte, 1 = short, 2 = long) */
136 FALSE, /* pc_relative */
138 complain_overflow_bitfield, /* complain_on_overflow */
139 special, /* special_function */
140 "R_H8_DIR16R8", /* name */
141 FALSE, /* partial_inplace */
143 0x0000ffff, /* dst_mask */
144 FALSE), /* pcrel_offset */
145 #define R_H8_DIR24A8_X (R_H8_DIR16R8_X + 1)
146 HOWTO (R_H8_DIR24A8, /* type */
148 2, /* size (0 = byte, 1 = short, 2 = long) */
150 FALSE, /* pc_relative */
152 complain_overflow_bitfield, /* complain_on_overflow */
153 special, /* special_function */
154 "R_H8_DIR24A8", /* name */
155 TRUE, /* partial_inplace */
156 0xff000000, /* src_mask */
157 0x00ffffff, /* dst_mask */
158 FALSE), /* pcrel_offset */
159 #define R_H8_DIR24R8_X (R_H8_DIR24A8_X + 1)
160 HOWTO (R_H8_DIR24R8, /* type */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
164 FALSE, /* pc_relative */
166 complain_overflow_bitfield, /* complain_on_overflow */
167 special, /* special_function */
168 "R_H8_DIR24R8", /* name */
169 TRUE, /* partial_inplace */
170 0xff000000, /* src_mask */
171 0x00ffffff, /* dst_mask */
172 FALSE), /* pcrel_offset */
173 #define R_H8_DIR32A16_X (R_H8_DIR24R8_X + 1)
174 HOWTO (R_H8_DIR32A16, /* type */
176 2, /* size (0 = byte, 1 = short, 2 = long) */
178 FALSE, /* pc_relative */
180 complain_overflow_dont,/* complain_on_overflow */
181 special, /* special_function */
182 "R_H8_DIR32A16", /* name */
183 FALSE, /* partial_inplace */
185 0xffffffff, /* dst_mask */
186 FALSE), /* pcrel_offset */
187 #define R_H8_DISP32A16_X (R_H8_DIR32A16_X + 1)
188 HOWTO (R_H8_DISP32A16, /* type */
190 2, /* size (0 = byte, 1 = short, 2 = long) */
192 FALSE, /* pc_relative */
194 complain_overflow_dont,/* complain_on_overflow */
195 special, /* special_function */
196 "R_H8_DISP32A16", /* name */
197 FALSE, /* partial_inplace */
199 0xffffffff, /* dst_mask */
200 FALSE), /* pcrel_offset */
201 #define R_H8_PCREL16_X (R_H8_DISP32A16_X + 1)
202 HOWTO (R_H8_PCREL16, /* type */
204 1, /* size (0 = byte, 1 = short, 2 = long) */
206 TRUE, /* pc_relative */
208 complain_overflow_signed,/* complain_on_overflow */
209 special, /* special_function */
210 "R_H8_PCREL16", /* name */
211 FALSE, /* partial_inplace */
212 0xffff, /* src_mask */
213 0xffff, /* dst_mask */
214 TRUE), /* pcrel_offset */
215 #define R_H8_PCREL8_X (R_H8_PCREL16_X + 1)
216 HOWTO (R_H8_PCREL8, /* type */
218 0, /* size (0 = byte, 1 = short, 2 = long) */
220 TRUE, /* pc_relative */
222 complain_overflow_signed,/* complain_on_overflow */
223 special, /* special_function */
224 "R_H8_PCREL8", /* name */
225 FALSE, /* partial_inplace */
228 TRUE), /* pcrel_offset */
231 /* This structure is used to map BFD reloc codes to H8 ELF relocs. */
233 struct elf_reloc_map {
234 bfd_reloc_code_real_type bfd_reloc_val;
235 unsigned char howto_index;
238 /* An array mapping BFD reloc codes to H8 ELF relocs. */
240 static const struct elf_reloc_map h8_reloc_map[] = {
241 { BFD_RELOC_NONE, R_H8_NONE_X },
242 { BFD_RELOC_32, R_H8_DIR32_X },
243 { BFD_RELOC_16, R_H8_DIR16_X },
244 { BFD_RELOC_8, R_H8_DIR8_X },
245 { BFD_RELOC_H8_DIR16A8, R_H8_DIR16A8_X },
246 { BFD_RELOC_H8_DIR16R8, R_H8_DIR16R8_X },
247 { BFD_RELOC_H8_DIR24A8, R_H8_DIR24A8_X },
248 { BFD_RELOC_H8_DIR24R8, R_H8_DIR24R8_X },
249 { BFD_RELOC_H8_DIR32A16, R_H8_DIR32A16_X },
250 { BFD_RELOC_H8_DISP32A16, R_H8_DISP32A16_X },
251 { BFD_RELOC_16_PCREL, R_H8_PCREL16_X },
252 { BFD_RELOC_8_PCREL, R_H8_PCREL8_X },
256 static reloc_howto_type *
257 elf32_h8_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
258 bfd_reloc_code_real_type code)
262 for (i = 0; i < sizeof (h8_reloc_map) / sizeof (struct elf_reloc_map); i++)
264 if (h8_reloc_map[i].bfd_reloc_val == code)
265 return &h8_elf_howto_table[(int) h8_reloc_map[i].howto_index];
270 static reloc_howto_type *
271 elf32_h8_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
277 i < sizeof (h8_elf_howto_table) / sizeof (h8_elf_howto_table[0]);
279 if (h8_elf_howto_table[i].name != NULL
280 && strcasecmp (h8_elf_howto_table[i].name, r_name) == 0)
281 return &h8_elf_howto_table[i];
287 elf32_h8_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
288 Elf_Internal_Rela *elf_reloc)
293 r = ELF32_R_TYPE (elf_reloc->r_info);
294 for (i = 0; i < sizeof (h8_elf_howto_table) / sizeof (reloc_howto_type); i++)
295 if (h8_elf_howto_table[i].type == r)
297 bfd_reloc->howto = &h8_elf_howto_table[i];
300 /* xgettext:c-format */
301 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r);
302 bfd_set_error (bfd_error_bad_value);
307 elf32_h8_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
308 arelent *bfd_reloc ATTRIBUTE_UNUSED,
309 Elf_Internal_Rela *elf_reloc ATTRIBUTE_UNUSED)
314 /* Special handling for H8/300 relocs.
315 We only come here for pcrel stuff and return normally if not an -r link.
316 When doing -r, we can't do any arithmetic for the pcrel stuff, because
317 we support relaxing on the H8/300 series chips. */
318 static bfd_reloc_status_type
319 special (bfd *abfd ATTRIBUTE_UNUSED,
320 arelent *reloc_entry ATTRIBUTE_UNUSED,
321 asymbol *symbol ATTRIBUTE_UNUSED,
322 void * data ATTRIBUTE_UNUSED,
323 asection *input_section ATTRIBUTE_UNUSED,
325 char **error_message ATTRIBUTE_UNUSED)
327 if (output_bfd == (bfd *) NULL)
328 return bfd_reloc_continue;
330 /* Adjust the reloc address to that in the output section. */
331 reloc_entry->address += input_section->output_offset;
335 /* Perform a relocation as part of a final link. */
336 static bfd_reloc_status_type
337 elf32_h8_final_link_relocate (unsigned long r_type, bfd *input_bfd,
338 bfd *output_bfd ATTRIBUTE_UNUSED,
339 asection *input_section ATTRIBUTE_UNUSED,
340 bfd_byte *contents, bfd_vma offset,
341 bfd_vma value, bfd_vma addend,
342 struct bfd_link_info *info ATTRIBUTE_UNUSED,
343 asection *sym_sec ATTRIBUTE_UNUSED,
344 int is_local ATTRIBUTE_UNUSED)
346 bfd_byte *hit_data = contents + offset;
358 bfd_put_32 (input_bfd, value, hit_data);
365 bfd_put_16 (input_bfd, value, hit_data);
372 bfd_put_8 (input_bfd, value, hit_data);
378 /* HIT_DATA is the address for the first byte for the relocated
379 value. Subtract 1 so that we can manipulate the data in 32-bit
383 /* Clear out the top byte in value. */
386 /* Retrieve the type byte for value from the section contents. */
387 value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
389 /* Now scribble it out in one 32-bit hunk. */
390 bfd_put_32 (input_bfd, value, hit_data);
394 value -= (input_section->output_section->vma
395 + input_section->output_offset);
399 /* The value is relative to the start of the instruction,
400 not the relocation offset. Subtract 2 to account for
404 bfd_put_16 (input_bfd, value, hit_data);
408 value -= (input_section->output_section->vma
409 + input_section->output_offset);
413 /* The value is relative to the start of the instruction,
414 not the relocation offset. Subtract 1 to account for
418 bfd_put_8 (input_bfd, value, hit_data);
422 return bfd_reloc_notsupported;
426 /* Relocate an H8 ELF section. */
428 elf32_h8_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
429 bfd *input_bfd, asection *input_section,
430 bfd_byte *contents, Elf_Internal_Rela *relocs,
431 Elf_Internal_Sym *local_syms,
432 asection **local_sections)
434 Elf_Internal_Shdr *symtab_hdr;
435 struct elf_link_hash_entry **sym_hashes;
436 Elf_Internal_Rela *rel, *relend;
438 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
439 sym_hashes = elf_sym_hashes (input_bfd);
442 relend = relocs + input_section->reloc_count;
443 for (; rel < relend; rel++)
446 unsigned long r_symndx;
447 Elf_Internal_Sym *sym;
449 struct elf_link_hash_entry *h;
451 bfd_reloc_status_type r;
453 reloc_howto_type *howto;
455 if (! elf32_h8_info_to_howto (input_bfd, &bfd_reloc, rel))
457 howto = bfd_reloc.howto;
459 r_symndx = ELF32_R_SYM (rel->r_info);
460 r_type = ELF32_R_TYPE (rel->r_info);
464 if (r_symndx < symtab_hdr->sh_info)
466 sym = local_syms + r_symndx;
467 sec = local_sections[r_symndx];
468 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
472 bfd_boolean unresolved_reloc, warned, ignored;
474 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
475 r_symndx, symtab_hdr, sym_hashes,
477 unresolved_reloc, warned, ignored);
480 if (sec != NULL && discarded_section (sec))
481 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
482 rel, 1, relend, howto, 0, contents);
484 if (bfd_link_relocatable (info))
487 r = elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd,
489 contents, rel->r_offset,
490 relocation, rel->r_addend,
491 info, sec, h == NULL);
493 if (r != bfd_reloc_ok)
496 const char *msg = (const char *) 0;
499 name = h->root.root.string;
502 name = (bfd_elf_string_from_elf_section
503 (input_bfd, symtab_hdr->sh_link, sym->st_name));
504 if (name == NULL || *name == '\0')
505 name = bfd_section_name (input_bfd, sec);
510 case bfd_reloc_overflow:
511 (*info->callbacks->reloc_overflow)
512 (info, (h ? &h->root : NULL), name, howto->name,
513 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
516 case bfd_reloc_undefined:
517 (*info->callbacks->undefined_symbol)
518 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
521 case bfd_reloc_outofrange:
522 msg = _("internal error: out of range error");
525 case bfd_reloc_notsupported:
526 msg = _("internal error: unsupported relocation error");
529 case bfd_reloc_dangerous:
530 msg = _("internal error: dangerous error");
534 msg = _("internal error: unknown error");
538 (*info->callbacks->warning) (info, msg, name, input_bfd,
539 input_section, rel->r_offset);
548 /* Object files encode the specific H8 model they were compiled
549 for in the ELF flags field.
551 Examine that field and return the proper BFD machine type for
554 elf32_h8_mach (flagword flags)
556 switch (flags & EF_H8_MACH)
558 case E_H8_MACH_H8300:
560 return bfd_mach_h8300;
562 case E_H8_MACH_H8300H:
563 return bfd_mach_h8300h;
565 case E_H8_MACH_H8300S:
566 return bfd_mach_h8300s;
568 case E_H8_MACH_H8300HN:
569 return bfd_mach_h8300hn;
571 case E_H8_MACH_H8300SN:
572 return bfd_mach_h8300sn;
574 case E_H8_MACH_H8300SX:
575 return bfd_mach_h8300sx;
577 case E_H8_MACH_H8300SXN:
578 return bfd_mach_h8300sxn;
582 /* The final processing done just before writing out a H8 ELF object
583 file. We use this opportunity to encode the BFD machine type
584 into the flags field in the object file. */
587 elf32_h8_final_write_processing (bfd *abfd, bfd_boolean linker)
591 switch (bfd_get_mach (abfd))
595 val = E_H8_MACH_H8300;
598 case bfd_mach_h8300h:
599 val = E_H8_MACH_H8300H;
602 case bfd_mach_h8300s:
603 val = E_H8_MACH_H8300S;
606 case bfd_mach_h8300hn:
607 val = E_H8_MACH_H8300HN;
610 case bfd_mach_h8300sn:
611 val = E_H8_MACH_H8300SN;
614 case bfd_mach_h8300sx:
615 val = E_H8_MACH_H8300SX;
618 case bfd_mach_h8300sxn:
619 val = E_H8_MACH_H8300SXN;
623 elf_elfheader (abfd)->e_flags &= ~ (EF_H8_MACH);
624 elf_elfheader (abfd)->e_flags |= val;
625 _bfd_elf_final_write_processing (abfd, linker);
628 /* Return nonzero if ABFD represents a valid H8 ELF object file; also
629 record the encoded machine type found in the ELF flags. */
632 elf32_h8_object_p (bfd *abfd)
634 bfd_default_set_arch_mach (abfd, bfd_arch_h8300,
635 elf32_h8_mach (elf_elfheader (abfd)->e_flags));
639 /* Merge backend specific data from an object file to the output
640 object file when linking. The only data we need to copy at this
641 time is the architecture/machine information. */
644 elf32_h8_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
646 bfd *obfd = info->output_bfd;
648 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
649 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
652 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
653 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
655 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
656 bfd_get_mach (ibfd)))
663 /* This function handles relaxing for the H8..
665 There are a few relaxing opportunities available on the H8:
667 jmp/jsr:24 -> bra/bsr:8 2 bytes
668 The jmp may be completely eliminated if the previous insn is a
669 conditional branch to the insn after the jump. In that case
670 we invert the branch and delete the jump and save 4 bytes.
672 bCC:16 -> bCC:8 2 bytes
673 bsr:16 -> bsr:8 2 bytes
675 bset:16 -> bset:8 2 bytes
676 bset:24/32 -> bset:8 4 bytes
677 (also applicable to other bit manipulation instructions)
679 mov.b:16 -> mov.b:8 2 bytes
680 mov.b:24/32 -> mov.b:8 4 bytes
682 bset:24/32 -> bset:16 2 bytes
683 (also applicable to other bit manipulation instructions)
685 mov.[bwl]:24/32 -> mov.[bwl]:16 2 bytes
687 mov.[bwl] @(displ:24/32+ERx) -> mov.[bwl] @(displ:16+ERx) 4 bytes. */
690 elf32_h8_relax_section (bfd *abfd, asection *sec,
691 struct bfd_link_info *link_info, bfd_boolean *again)
693 Elf_Internal_Shdr *symtab_hdr;
694 Elf_Internal_Rela *internal_relocs;
695 Elf_Internal_Rela *irel, *irelend;
696 bfd_byte *contents = NULL;
697 Elf_Internal_Sym *isymbuf = NULL;
698 static asection *last_input_section = NULL;
699 static Elf_Internal_Rela *last_reloc = NULL;
701 /* Assume nothing changes. */
704 /* We don't have to do anything for a relocatable link, if
705 this section does not have relocs, or if this is not a
707 if (bfd_link_relocatable (link_info)
708 || (sec->flags & SEC_RELOC) == 0
709 || sec->reloc_count == 0
710 || (sec->flags & SEC_CODE) == 0)
713 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
715 /* Get a copy of the native relocations. */
716 internal_relocs = (_bfd_elf_link_read_relocs
717 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
718 link_info->keep_memory));
719 if (internal_relocs == NULL)
722 if (sec != last_input_section)
725 last_input_section = sec;
727 /* Walk through the relocs looking for relaxing opportunities. */
728 irelend = internal_relocs + sec->reloc_count;
729 for (irel = internal_relocs; irel < irelend; irel++)
736 if (! elf32_h8_info_to_howto (abfd, &bfd_reloc, irel))
739 /* Keep track of the previous reloc so that we can delete
740 some long jumps created by the compiler. */
741 if (irel != internal_relocs)
742 last_reloc = irel - 1;
744 switch(ELF32_R_TYPE (irel->r_info))
757 /* Get the section contents if we haven't done so already. */
758 if (contents == NULL)
760 /* Get cached copy if it exists. */
761 if (elf_section_data (sec)->this_hdr.contents != NULL)
762 contents = elf_section_data (sec)->this_hdr.contents;
765 /* Go get them off disk. */
766 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
771 /* Read this BFD's local symbols if we haven't done so already. */
772 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
774 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
776 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
777 symtab_hdr->sh_info, 0,
783 /* Get the value of the symbol referred to by the reloc. */
784 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
786 /* A local symbol. */
787 Elf_Internal_Sym *isym;
790 isym = isymbuf + ELF32_R_SYM (irel->r_info);
791 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
792 symval = isym->st_value;
793 /* If the reloc is absolute, it will not have
794 a symbol or section associated with it. */
796 symval += sym_sec->output_section->vma
797 + sym_sec->output_offset;
802 struct elf_link_hash_entry *h;
804 /* An external symbol. */
805 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
806 h = elf_sym_hashes (abfd)[indx];
807 BFD_ASSERT (h != NULL);
808 if (h->root.type != bfd_link_hash_defined
809 && h->root.type != bfd_link_hash_defweak)
811 /* This appears to be a reference to an undefined
812 symbol. Just ignore it--it will be caught by the
813 regular reloc processing. */
817 symval = (h->root.u.def.value
818 + h->root.u.def.section->output_section->vma
819 + h->root.u.def.section->output_offset);
822 /* For simplicity of coding, we are going to modify the section
823 contents, the section relocs, and the BFD symbol table. We
824 must tell the rest of the code not to free up this
825 information. It would be possible to instead create a table
826 of changes which have to be made, as is done in coff-mips.c;
827 that would be more work, but would require less memory when
828 the linker is run. */
829 switch (ELF32_R_TYPE (irel->r_info))
831 /* Try to turn a 24-bit absolute branch/call into an 8-bit
832 pc-relative branch/call. */
835 bfd_vma value = symval + irel->r_addend;
838 /* Get the address of this instruction. */
839 dot = (sec->output_section->vma
840 + sec->output_offset + irel->r_offset - 1);
842 /* Compute the distance from this insn to the branch target. */
845 /* If the distance is within -126..+130 inclusive, then we can
846 relax this jump. +130 is valid since the target will move
847 two bytes closer if we do relax this branch. */
848 if ((int) gap >= -126 && (int) gap <= 130)
852 /* Note that we've changed the relocs, section contents,
854 elf_section_data (sec)->relocs = internal_relocs;
855 elf_section_data (sec)->this_hdr.contents = contents;
856 symtab_hdr->contents = (unsigned char *) isymbuf;
858 /* Get the instruction code being relaxed. */
859 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
861 /* If the previous instruction conditionally jumped around
862 this instruction, we may be able to reverse the condition
863 and redirect the previous instruction to the target of
866 Such sequences are used by the compiler to deal with
867 long conditional branches.
869 Only perform this optimisation for jumps (code 0x5a) not
870 subroutine calls, as otherwise it could transform:
883 which changes the call (jsr) into a branch (bne). */
884 if (code == 0x5a /* jmp24. */
888 && ELF32_R_TYPE (last_reloc->r_info) == R_H8_PCREL8
889 && ELF32_R_SYM (last_reloc->r_info) < symtab_hdr->sh_info)
892 asection *last_sym_sec;
893 Elf_Internal_Sym *last_sym;
895 /* We will need to examine the symbol used by the
896 previous relocation. */
898 last_sym = isymbuf + ELF32_R_SYM (last_reloc->r_info);
900 = bfd_section_from_elf_index (abfd, last_sym->st_shndx);
901 last_value = (last_sym->st_value
902 + last_sym_sec->output_section->vma
903 + last_sym_sec->output_offset);
905 /* Verify that the previous relocation was for a
906 branch around this instruction and that no symbol
907 exists at the current location. */
908 if (last_value == dot + 4
909 && last_reloc->r_offset + 2 == irel->r_offset
910 && ! elf32_h8_symbol_address_p (abfd, sec, dot))
912 /* We can eliminate this jump. Twiddle the
913 previous relocation as necessary. */
915 = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
916 ELF32_R_TYPE (R_H8_NONE));
919 = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
920 ELF32_R_TYPE (R_H8_PCREL8));
921 last_reloc->r_addend = irel->r_addend;
923 code = bfd_get_8 (abfd,
924 contents + last_reloc->r_offset - 1);
928 contents + last_reloc->r_offset - 1);
930 /* Delete four bytes of data. */
931 if (!elf32_h8_relax_delete_bytes (abfd, sec,
943 bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 1); /* bsr8. */
944 else if (code == 0x5a)
946 bfd_put_8 (abfd, 0x40, contents + irel->r_offset - 1); /* bra8. */
950 /* Fix the relocation's type. */
951 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
954 /* Delete two bytes of data. */
955 if (!elf32_h8_relax_delete_bytes (abfd, sec,
956 irel->r_offset + 1, 2))
959 /* That will change things, so, we should relax again.
960 Note that this is not required, and it may be slow. */
966 /* Try to turn a 16-bit pc-relative branch into a 8-bit pc-relative
970 bfd_vma value = symval + irel->r_addend;
974 /* Get the address of this instruction. */
975 dot = (sec->output_section->vma
977 + irel->r_offset - 2);
981 /* If the distance is within -126..+130 inclusive, then we can
982 relax this jump. +130 is valid since the target will move
983 two bytes closer if we do relax this branch. */
984 if ((int) gap >= -126 && (int) gap <= 130)
988 /* Note that we've changed the relocs, section contents,
990 elf_section_data (sec)->relocs = internal_relocs;
991 elf_section_data (sec)->this_hdr.contents = contents;
992 symtab_hdr->contents = (unsigned char *) isymbuf;
994 /* Get the opcode. */
995 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
999 /* bCC:16 -> bCC:8 */
1000 /* Get the second byte of the original insn, which
1001 contains the condition code. */
1002 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1004 /* Compute the first byte of the relaxed
1005 instruction. The original sequence 0x58 0xX0
1006 is relaxed to 0x4X, where X represents the
1011 bfd_put_8 (abfd, code, contents + irel->r_offset - 2); /* bCC:8. */
1013 else if (code == 0x5c) /* bsr16. */
1015 bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 2); /* bsr8. */
1017 /* Might be MOVSD. */
1020 /* Fix the relocation's type. */
1021 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1025 /* Delete two bytes of data. */
1026 if (!elf32_h8_relax_delete_bytes (abfd, sec,
1027 irel->r_offset + 1, 2))
1030 /* That will change things, so, we should relax again.
1031 Note that this is not required, and it may be slow. */
1037 /* This is a 16-bit absolute address in one of the following
1040 "band", "bclr", "biand", "bild", "bior", "bist", "bixor",
1041 "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and
1044 We may relax this into an 8-bit absolute address if it's in
1050 value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
1051 if (value >= 0xffffff00u)
1054 unsigned char temp_code;
1056 /* Note that we've changed the relocs, section contents,
1058 elf_section_data (sec)->relocs = internal_relocs;
1059 elf_section_data (sec)->this_hdr.contents = contents;
1060 symtab_hdr->contents = (unsigned char *) isymbuf;
1062 /* Get the opcode. */
1063 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
1065 /* All instructions with R_H8_DIR16A8 start with
1070 temp_code = code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1071 /* If this is a mov.b instruction, clear the lower
1072 nibble, which contains the source/destination
1074 if ((temp_code & 0x10) != 0x10)
1080 /* This is mov.b @aa:16,Rd. */
1081 bfd_put_8 (abfd, (code & 0xf) | 0x20,
1082 contents + irel->r_offset - 2);
1085 /* This is mov.b Rs,@aa:16. */
1086 bfd_put_8 (abfd, (code & 0xf) | 0x30,
1087 contents + irel->r_offset - 2);
1090 /* This is a bit-maniputation instruction that
1091 stores one bit into memory, one of "bclr",
1092 "bist", "bnot", "bset", and "bst". */
1093 bfd_put_8 (abfd, 0x7f, contents + irel->r_offset - 2);
1096 /* This is a bit-maniputation instruction that
1097 loads one bit from memory, one of "band",
1098 "biand", "bild", "bior", "bixor", "bld", "bor",
1099 "btst", and "bxor". */
1100 bfd_put_8 (abfd, 0x7e, contents + irel->r_offset - 2);
1106 /* Fix the relocation's type. */
1107 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1110 /* Move the relocation. */
1113 /* Delete two bytes of data. */
1114 if (!elf32_h8_relax_delete_bytes (abfd, sec,
1115 irel->r_offset + 1, 2))
1118 /* That will change things, so, we should relax again.
1119 Note that this is not required, and it may be slow. */
1125 /* This is a 24-bit absolute address in one of the following
1128 "band", "bclr", "biand", "bild", "bior", "bist", "bixor",
1129 "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and
1132 We may relax this into an 8-bit absolute address if it's in
1138 value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
1139 if (value >= 0xffffff00u)
1142 unsigned char temp_code;
1144 /* Note that we've changed the relocs, section contents,
1146 elf_section_data (sec)->relocs = internal_relocs;
1147 elf_section_data (sec)->this_hdr.contents = contents;
1148 symtab_hdr->contents = (unsigned char *) isymbuf;
1150 /* Get the opcode. */
1151 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
1153 /* All instructions with R_H8_DIR24A8 start with
1158 temp_code = code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1160 /* If this is a mov.b instruction, clear the lower
1161 nibble, which contains the source/destination
1163 if ((temp_code & 0x30) != 0x30)
1169 /* This is mov.b @aa:24/32,Rd. */
1170 bfd_put_8 (abfd, (code & 0xf) | 0x20,
1171 contents + irel->r_offset - 2);
1174 /* This is mov.b Rs,@aa:24/32. */
1175 bfd_put_8 (abfd, (code & 0xf) | 0x30,
1176 contents + irel->r_offset - 2);
1179 /* This is a bit-maniputation instruction that
1180 stores one bit into memory, one of "bclr",
1181 "bist", "bnot", "bset", and "bst". */
1182 bfd_put_8 (abfd, 0x7f, contents + irel->r_offset - 2);
1185 /* This is a bit-maniputation instruction that
1186 loads one bit from memory, one of "band",
1187 "biand", "bild", "bior", "bixor", "bld", "bor",
1188 "btst", and "bxor". */
1189 bfd_put_8 (abfd, 0x7e, contents + irel->r_offset - 2);
1195 /* Fix the relocation's type. */
1196 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1200 /* Delete four bytes of data. */
1201 if (!elf32_h8_relax_delete_bytes (abfd, sec,
1202 irel->r_offset + 1, 4))
1205 /* That will change things, so, we should relax again.
1206 Note that this is not required, and it may be slow. */
1214 /* This is a 24-/32-bit absolute address in one of the
1215 following instructions:
1217 "band", "bclr", "biand", "bild", "bior", "bist",
1218 "bixor", "bld", "bnot", "bor", "bset", "bst", "btst",
1219 "bxor", "ldc.w", "stc.w" and "mov.[bwl]"
1221 We may relax this into an 16-bit absolute address if it's
1222 in the right range. */
1227 value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
1228 if (value <= 0x7fff || value >= 0xffff8000u)
1231 unsigned char op0, op1, op2, op3;
1232 unsigned char *op_ptr;
1234 /* Note that we've changed the relocs, section contents,
1236 elf_section_data (sec)->relocs = internal_relocs;
1237 elf_section_data (sec)->this_hdr.contents = contents;
1238 symtab_hdr->contents = (unsigned char *) isymbuf;
1240 if (irel->r_offset >= 4)
1242 /* Check for 4-byte MOVA relaxation (SH-specific). */
1243 int second_reloc = 0;
1245 op_ptr = contents + irel->r_offset - 4;
1250 reloc_howto_type *h;
1251 bfd_vma last_reloc_size;
1253 if (! elf32_h8_info_to_howto (abfd, &bfd_reloc, last_reloc))
1255 h = bfd_reloc.howto;
1256 last_reloc_size = 1 << h->size;
1257 if (last_reloc->r_offset + last_reloc_size
1260 op_ptr -= last_reloc_size;
1265 if (irel + 1 < irelend)
1267 Elf_Internal_Rela *next_reloc = irel + 1;
1269 reloc_howto_type *h;
1270 bfd_vma next_reloc_size;
1272 if (! elf32_h8_info_to_howto (abfd, &bfd_reloc, next_reloc))
1274 h = bfd_reloc.howto;
1275 next_reloc_size = 1 << h->size;
1276 if (next_reloc->r_offset + next_reloc_size
1279 op_ptr -= next_reloc_size;
1284 op0 = bfd_get_8 (abfd, op_ptr + 0);
1285 op1 = bfd_get_8 (abfd, op_ptr + 1);
1286 op2 = bfd_get_8 (abfd, op_ptr + 2);
1287 op3 = bfd_get_8 (abfd, op_ptr + 3);
1290 && (op1 & 0xdf) == 0x5f
1291 && (op2 & 0x40) == 0x40
1292 && (op3 & 0x80) == 0x80)
1294 if ((op2 & 0x08) == 0)
1300 bfd_put_8 (abfd, op3, op_ptr + 3);
1305 bfd_put_8 (abfd, op2, op_ptr + 2);
1307 goto r_h8_dir32a16_common;
1311 /* Now check for short version of MOVA. (SH-specific) */
1312 op_ptr = contents + irel->r_offset - 2;
1313 op0 = bfd_get_8 (abfd, op_ptr + 0);
1314 op1 = bfd_get_8 (abfd, op_ptr + 1);
1317 && (op1 & 0x88) == 0x80)
1320 bfd_put_8 (abfd, op1, op_ptr + 1);
1321 goto r_h8_dir32a16_common;
1324 /* Get the opcode. */
1325 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1327 /* Fix the opcode. For all the instructions that
1328 belong to this relaxation, we simply need to turn
1329 off bit 0x20 in the previous byte. */
1332 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
1334 r_h8_dir32a16_common:
1335 /* Fix the relocation's type. */
1336 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
1339 /* Delete two bytes of data. */
1340 if (!elf32_h8_relax_delete_bytes (abfd, sec,
1341 irel->r_offset + 1, 2))
1344 /* That will change things, so, we should relax again.
1345 Note that this is not required, and it may be slow. */
1348 break; /* case R_H8_DIR32A16 */
1351 case R_H8_DISP32A16:
1352 /* mov.[bwl] @(displ:24/32+ERx) -> mov.[bwl] @(displ:16+ERx) 4 bytes
1353 It is assured that instruction uses at least 4 bytes opcode before
1354 reloc entry addressing mode "register indirect with displacement"
1355 relaxing options (all saving 4 bytes):
1356 0x78 0sss0000 0x6A 0010dddd disp:32 mov.b @(d:32,ERs),Rd ->
1357 0x6E 0sssdddd disp:16 mov.b @(d:16,ERs),Rd
1358 0x78 0sss0000 0x6B 0010dddd disp:32 mov.w @(d:32,ERs),Rd ->
1359 0x6F 0sssdddd disp:16 mov.w @(d:16,ERs),Rd
1360 0x01 0x00 0x78 0sss0000 0x6B 00100ddd disp:32 mov.l @(d:32,ERs),ERd ->
1361 0x01 0x00 0x6F 0sss0ddd disp:16 mov.l @(d:16,ERs),ERd
1363 0x78 0ddd0000 0x6A 1010ssss disp:32 mov.b Rs,@(d:32,ERd) ->
1364 0x6E 1dddssss disp:16 mov.b Rs,@(d:16,ERd)
1365 0x78 0ddd0000 0x6B 1010ssss disp:32 mov.w Rs,@(d:32,ERd) ->
1366 0x6F 1dddssss disp:16 mov.w Rs,@(d:16,ERd)
1367 0x01 0x00 0x78 xddd0000 0x6B 10100sss disp:32 mov.l ERs,@(d:32,ERd) ->
1368 0x01 0x00 0x6F 1ddd0sss disp:16 mov.l ERs,@(d:16,ERd)
1369 mov.l prefix 0x01 0x00 can be left as is and mov.l handled same
1374 value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
1375 if (value <= 0x7fff || value >= 0xffff8000u)
1377 unsigned char op0, op1, op2, op3, op0n, op1n;
1380 /* Note that we've changed the relocs, section contents,
1382 elf_section_data (sec)->relocs = internal_relocs;
1383 elf_section_data (sec)->this_hdr.contents = contents;
1384 symtab_hdr->contents = (unsigned char *) isymbuf;
1386 if (irel->r_offset >= 4)
1388 op0 = bfd_get_8 (abfd, contents + irel->r_offset - 4);
1389 op1 = bfd_get_8 (abfd, contents + irel->r_offset - 3);
1390 op2 = bfd_get_8 (abfd, contents + irel->r_offset - 2);
1391 op3 = bfd_get_8 (abfd, contents + irel->r_offset - 1);
1398 if ((op1 & 0x8F) == 0x00 && (op3 & 0x70) == 0x20)
1406 if ((op1 & 0x0F) == 0x00 && (op3 & 0x70) == 0x20)
1421 op1n = (op3 & 0x8F) | (op1 & 0x70);
1422 bfd_put_8 (abfd, op0n, contents + irel->r_offset - 4);
1423 bfd_put_8 (abfd, op1n, contents + irel->r_offset - 3);
1425 /* Fix the relocation's type. */
1426 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_H8_DIR16);
1427 irel->r_offset -= 2;
1429 /* Delete four bytes of data. */
1430 if (!elf32_h8_relax_delete_bytes (abfd, sec, irel->r_offset + 2, 4))
1433 /* That will change things, so, we should relax again.
1434 Note that this is not required, and it may be slow. */
1447 && symtab_hdr->contents != (unsigned char *) isymbuf)
1449 if (! link_info->keep_memory)
1452 symtab_hdr->contents = (unsigned char *) isymbuf;
1455 if (contents != NULL
1456 && elf_section_data (sec)->this_hdr.contents != contents)
1458 if (! link_info->keep_memory)
1462 /* Cache the section contents for elf_link_input_bfd. */
1463 elf_section_data (sec)->this_hdr.contents = contents;
1467 if (internal_relocs != NULL
1468 && elf_section_data (sec)->relocs != internal_relocs)
1469 free (internal_relocs);
1475 && symtab_hdr->contents != (unsigned char *) isymbuf)
1477 if (contents != NULL
1478 && elf_section_data (sec)->this_hdr.contents != contents)
1480 if (internal_relocs != NULL
1481 && elf_section_data (sec)->relocs != internal_relocs)
1482 free (internal_relocs);
1486 /* Delete some bytes from a section while relaxing. */
1489 elf32_h8_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count)
1491 Elf_Internal_Shdr *symtab_hdr;
1492 unsigned int sec_shndx;
1494 Elf_Internal_Rela *irel, *irelend;
1495 Elf_Internal_Sym *isym;
1496 Elf_Internal_Sym *isymend;
1498 struct elf_link_hash_entry **sym_hashes;
1499 struct elf_link_hash_entry **end_hashes;
1500 unsigned int symcount;
1502 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1504 contents = elf_section_data (sec)->this_hdr.contents;
1508 irel = elf_section_data (sec)->relocs;
1509 irelend = irel + sec->reloc_count;
1511 /* Actually delete the bytes. */
1512 memmove (contents + addr, contents + addr + count,
1513 (size_t) (toaddr - addr - count));
1516 /* Adjust all the relocs. */
1517 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
1519 /* Get the new reloc address. */
1520 if ((irel->r_offset > addr
1521 && irel->r_offset <= toaddr))
1522 irel->r_offset -= count;
1525 /* Adjust the local symbols defined in this section. */
1526 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1527 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
1528 isymend = isym + symtab_hdr->sh_info;
1529 for (; isym < isymend; isym++)
1531 if (isym->st_shndx == sec_shndx
1532 && isym->st_value > addr
1533 && isym->st_value <= toaddr)
1534 isym->st_value -= count;
1537 /* Now adjust the global symbols defined in this section. */
1538 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1539 - symtab_hdr->sh_info);
1540 sym_hashes = elf_sym_hashes (abfd);
1541 end_hashes = sym_hashes + symcount;
1542 for (; sym_hashes < end_hashes; sym_hashes++)
1544 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1546 if ((sym_hash->root.type == bfd_link_hash_defined
1547 || sym_hash->root.type == bfd_link_hash_defweak)
1548 && sym_hash->root.u.def.section == sec
1549 && sym_hash->root.u.def.value > addr
1550 && sym_hash->root.u.def.value <= toaddr)
1551 sym_hash->root.u.def.value -= count;
1557 /* Return TRUE if a symbol exists at the given address, else return
1560 elf32_h8_symbol_address_p (bfd *abfd, asection *sec, bfd_vma addr)
1562 Elf_Internal_Shdr *symtab_hdr;
1563 unsigned int sec_shndx;
1564 Elf_Internal_Sym *isym;
1565 Elf_Internal_Sym *isymend;
1566 struct elf_link_hash_entry **sym_hashes;
1567 struct elf_link_hash_entry **end_hashes;
1568 unsigned int symcount;
1570 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1572 /* Examine all the symbols. */
1573 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1574 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
1575 isymend = isym + symtab_hdr->sh_info;
1576 for (; isym < isymend; isym++)
1578 if (isym->st_shndx == sec_shndx
1579 && isym->st_value == addr)
1583 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1584 - symtab_hdr->sh_info);
1585 sym_hashes = elf_sym_hashes (abfd);
1586 end_hashes = sym_hashes + symcount;
1587 for (; sym_hashes < end_hashes; sym_hashes++)
1589 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1590 if ((sym_hash->root.type == bfd_link_hash_defined
1591 || sym_hash->root.type == bfd_link_hash_defweak)
1592 && sym_hash->root.u.def.section == sec
1593 && sym_hash->root.u.def.value == addr)
1600 /* This is a version of bfd_generic_get_relocated_section_contents
1601 which uses elf32_h8_relocate_section. */
1604 elf32_h8_get_relocated_section_contents (bfd *output_bfd,
1605 struct bfd_link_info *link_info,
1606 struct bfd_link_order *link_order,
1608 bfd_boolean relocatable,
1611 Elf_Internal_Shdr *symtab_hdr;
1612 asection *input_section = link_order->u.indirect.section;
1613 bfd *input_bfd = input_section->owner;
1614 asection **sections = NULL;
1615 Elf_Internal_Rela *internal_relocs = NULL;
1616 Elf_Internal_Sym *isymbuf = NULL;
1618 /* We only need to handle the case of relaxing, or of having a
1619 particular set of section contents, specially. */
1621 || elf_section_data (input_section)->this_hdr.contents == NULL)
1622 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
1627 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1629 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
1630 (size_t) input_section->size);
1632 if ((input_section->flags & SEC_RELOC) != 0
1633 && input_section->reloc_count > 0)
1636 Elf_Internal_Sym *isym, *isymend;
1639 internal_relocs = (_bfd_elf_link_read_relocs
1640 (input_bfd, input_section, NULL,
1641 (Elf_Internal_Rela *) NULL, FALSE));
1642 if (internal_relocs == NULL)
1645 if (symtab_hdr->sh_info != 0)
1647 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1648 if (isymbuf == NULL)
1649 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1650 symtab_hdr->sh_info, 0,
1652 if (isymbuf == NULL)
1656 amt = symtab_hdr->sh_info;
1657 amt *= sizeof (asection *);
1658 sections = (asection **) bfd_malloc (amt);
1659 if (sections == NULL && amt != 0)
1662 isymend = isymbuf + symtab_hdr->sh_info;
1663 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
1667 if (isym->st_shndx == SHN_UNDEF)
1668 isec = bfd_und_section_ptr;
1669 else if (isym->st_shndx == SHN_ABS)
1670 isec = bfd_abs_section_ptr;
1671 else if (isym->st_shndx == SHN_COMMON)
1672 isec = bfd_com_section_ptr;
1674 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
1679 if (! elf32_h8_relocate_section (output_bfd, link_info, input_bfd,
1680 input_section, data, internal_relocs,
1684 if (sections != NULL)
1687 && symtab_hdr->contents != (unsigned char *) isymbuf)
1689 if (elf_section_data (input_section)->relocs != internal_relocs)
1690 free (internal_relocs);
1696 if (sections != NULL)
1699 && symtab_hdr->contents != (unsigned char *) isymbuf)
1701 if (internal_relocs != NULL
1702 && elf_section_data (input_section)->relocs != internal_relocs)
1703 free (internal_relocs);
1708 #define TARGET_BIG_SYM h8300_elf32_vec
1709 #define TARGET_BIG_NAME "elf32-h8300"
1710 #define ELF_ARCH bfd_arch_h8300
1711 #define ELF_MACHINE_CODE EM_H8_300
1712 #define ELF_MAXPAGESIZE 0x1
1713 #define bfd_elf32_bfd_reloc_type_lookup elf32_h8_reloc_type_lookup
1714 #define bfd_elf32_bfd_reloc_name_lookup elf32_h8_reloc_name_lookup
1715 #define elf_info_to_howto elf32_h8_info_to_howto
1716 #define elf_info_to_howto_rel elf32_h8_info_to_howto_rel
1718 /* So we can set/examine bits in e_flags to get the specific
1719 H8 architecture in use. */
1720 #define elf_backend_final_write_processing \
1721 elf32_h8_final_write_processing
1722 #define elf_backend_object_p \
1724 #define bfd_elf32_bfd_merge_private_bfd_data \
1725 elf32_h8_merge_private_bfd_data
1727 /* ??? when elf_backend_relocate_section is not defined, elf32-target.h
1728 defaults to using _bfd_generic_link_hash_table_create, but
1729 bfd_elf_size_dynamic_sections uses
1730 dynobj = elf_hash_table (info)->dynobj;
1731 and thus requires an elf hash table. */
1732 #define bfd_elf32_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
1734 /* Use an H8 specific linker, not the ELF generic linker. */
1735 #define elf_backend_relocate_section elf32_h8_relocate_section
1736 #define elf_backend_rela_normal 1
1737 #define elf_backend_can_gc_sections 1
1739 /* And relaxing stuff. */
1740 #define bfd_elf32_bfd_relax_section elf32_h8_relax_section
1741 #define bfd_elf32_bfd_get_relocated_section_contents \
1742 elf32_h8_get_relocated_section_contents
1744 #define elf_symbol_leading_char '_'
1746 #include "elf32-target.h"
1748 #undef TARGET_BIG_SYM
1749 #define TARGET_BIG_SYM h8300_elf32_linux_vec
1750 #undef TARGET_BIG_NAME
1751 #define TARGET_BIG_NAME "elf32-h8300-linux"
1752 #undef elf_symbol_leading_char
1753 #define elf32_bed elf32_h8300_linux_bed
1755 #include "elf32-target.h"