diff options
Diffstat (limited to 'binutils-2.17/bfd/elf32-h8300.c')
| -rw-r--r-- | binutils-2.17/bfd/elf32-h8300.c | 1568 |
1 files changed, 0 insertions, 1568 deletions
diff --git a/binutils-2.17/bfd/elf32-h8300.c b/binutils-2.17/bfd/elf32-h8300.c deleted file mode 100644 index 4cdf2def..00000000 --- a/binutils-2.17/bfd/elf32-h8300.c +++ /dev/null @@ -1,1568 +0,0 @@ -/* BFD back-end for Renesas H8/300 ELF binaries. - Copyright 1993, 1995, 1998, 1999, 2001, 2002, 2003, 2004 - Free Software Foundation, Inc. - - This file is part of BFD, the Binary File Descriptor library. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ - -#include "bfd.h" -#include "sysdep.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf/h8.h" - -static reloc_howto_type *elf32_h8_reloc_type_lookup - (bfd *abfd, bfd_reloc_code_real_type code); -static void elf32_h8_info_to_howto - (bfd *, arelent *, Elf_Internal_Rela *); -static void elf32_h8_info_to_howto_rel - (bfd *, arelent *, Elf_Internal_Rela *); -static unsigned long elf32_h8_mach (flagword); -static void elf32_h8_final_write_processing (bfd *, bfd_boolean); -static bfd_boolean elf32_h8_object_p (bfd *); -static bfd_boolean elf32_h8_merge_private_bfd_data (bfd *, bfd *); -static bfd_boolean elf32_h8_relax_section - (bfd *, asection *, struct bfd_link_info *, bfd_boolean *); -static bfd_boolean elf32_h8_relax_delete_bytes - (bfd *, asection *, bfd_vma, int); -static bfd_boolean elf32_h8_symbol_address_p (bfd *, asection *, bfd_vma); -static bfd_byte *elf32_h8_get_relocated_section_contents - (bfd *, struct bfd_link_info *, struct bfd_link_order *, - bfd_byte *, bfd_boolean, asymbol **); -static asection *elf32_h8_gc_mark_hook - (asection *, struct bfd_link_info *, Elf_Internal_Rela *, - struct elf_link_hash_entry *, Elf_Internal_Sym *); -static bfd_boolean elf32_h8_gc_sweep_hook - (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); -static bfd_reloc_status_type elf32_h8_final_link_relocate - (unsigned long, bfd *, bfd *, asection *, - bfd_byte *, bfd_vma, bfd_vma, bfd_vma, - struct bfd_link_info *, asection *, int); -static bfd_boolean elf32_h8_relocate_section - (bfd *, struct bfd_link_info *, bfd *, asection *, - bfd_byte *, Elf_Internal_Rela *, - Elf_Internal_Sym *, asection **); -static bfd_reloc_status_type special - (bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **); - -/* This does not include any relocation information, but should be - good enough for GDB or objdump to read the file. */ - -static reloc_howto_type h8_elf_howto_table[] = { -#define R_H8_NONE_X 0 - HOWTO (R_H8_NONE, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - special, /* special_function */ - "R_H8_NONE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ -#define R_H8_DIR32_X (R_H8_NONE_X + 1) - HOWTO (R_H8_DIR32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - special, /* special_function */ - "R_H8_DIR32", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ -#define R_H8_DIR16_X (R_H8_DIR32_X + 1) - HOWTO (R_H8_DIR16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - special, /* special_function */ - "R_H8_DIR16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ -#define R_H8_DIR8_X (R_H8_DIR16_X + 1) - HOWTO (R_H8_DIR8, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - special, /* special_function */ - "R_H8_DIR8", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0x000000ff, /* dst_mask */ - FALSE), /* pcrel_offset */ -#define R_H8_DIR16A8_X (R_H8_DIR8_X + 1) - HOWTO (R_H8_DIR16A8, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - special, /* special_function */ - "R_H8_DIR16A8", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ -#define R_H8_DIR16R8_X (R_H8_DIR16A8_X + 1) - HOWTO (R_H8_DIR16R8, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - special, /* special_function */ - "R_H8_DIR16R8", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ -#define R_H8_DIR24A8_X (R_H8_DIR16R8_X + 1) - HOWTO (R_H8_DIR24A8, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - special, /* special_function */ - "R_H8_DIR24A8", /* name */ - TRUE, /* partial_inplace */ - 0xff000000, /* src_mask */ - 0x00ffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ -#define R_H8_DIR24R8_X (R_H8_DIR24A8_X + 1) - HOWTO (R_H8_DIR24R8, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - special, /* special_function */ - "R_H8_DIR24R8", /* name */ - TRUE, /* partial_inplace */ - 0xff000000, /* src_mask */ - 0x00ffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ -#define R_H8_DIR32A16_X (R_H8_DIR24R8_X + 1) - HOWTO (R_H8_DIR32A16, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - special, /* special_function */ - "R_H8_DIR32A16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ -#define R_H8_PCREL16_X (R_H8_DIR32A16_X + 1) - HOWTO (R_H8_PCREL16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - special, /* special_function */ - "R_H8_PCREL16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ -#define R_H8_PCREL8_X (R_H8_PCREL16_X + 1) - HOWTO (R_H8_PCREL8, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - special, /* special_function */ - "R_H8_PCREL8", /* name */ - FALSE, /* partial_inplace */ - 0xff, /* src_mask */ - 0xff, /* dst_mask */ - TRUE), /* pcrel_offset */ -}; - -/* This structure is used to map BFD reloc codes to H8 ELF relocs. */ - -struct elf_reloc_map { - bfd_reloc_code_real_type bfd_reloc_val; - unsigned char howto_index; -}; - -/* An array mapping BFD reloc codes to H8 ELF relocs. */ - -static const struct elf_reloc_map h8_reloc_map[] = { - { BFD_RELOC_NONE, R_H8_NONE_X }, - { BFD_RELOC_32, R_H8_DIR32_X }, - { BFD_RELOC_16, R_H8_DIR16_X }, - { BFD_RELOC_8, R_H8_DIR8_X }, - { BFD_RELOC_H8_DIR16A8, R_H8_DIR16A8_X }, - { BFD_RELOC_H8_DIR16R8, R_H8_DIR16R8_X }, - { BFD_RELOC_H8_DIR24A8, R_H8_DIR24A8_X }, - { BFD_RELOC_H8_DIR24R8, R_H8_DIR24R8_X }, - { BFD_RELOC_H8_DIR32A16, R_H8_DIR32A16_X }, - { BFD_RELOC_16_PCREL, R_H8_PCREL16_X }, - { BFD_RELOC_8_PCREL, R_H8_PCREL8_X }, -}; - - -static reloc_howto_type * -elf32_h8_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, - bfd_reloc_code_real_type code) -{ - unsigned int i; - - for (i = 0; i < sizeof (h8_reloc_map) / sizeof (struct elf_reloc_map); i++) - { - if (h8_reloc_map[i].bfd_reloc_val == code) - return &h8_elf_howto_table[(int) h8_reloc_map[i].howto_index]; - } - return NULL; -} - -static void -elf32_h8_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, - Elf_Internal_Rela *elf_reloc) -{ - unsigned int r; - unsigned int i; - - r = ELF32_R_TYPE (elf_reloc->r_info); - for (i = 0; i < sizeof (h8_elf_howto_table) / sizeof (reloc_howto_type); i++) - if (h8_elf_howto_table[i].type == r) - { - bfd_reloc->howto = &h8_elf_howto_table[i]; - return; - } - abort (); -} - -static void -elf32_h8_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, - Elf_Internal_Rela *elf_reloc ATTRIBUTE_UNUSED) -{ - unsigned int r; - - abort (); - r = ELF32_R_TYPE (elf_reloc->r_info); - bfd_reloc->howto = &h8_elf_howto_table[r]; -} - -/* Special handling for H8/300 relocs. - We only come here for pcrel stuff and return normally if not an -r link. - When doing -r, we can't do any arithmetic for the pcrel stuff, because - we support relaxing on the H8/300 series chips. */ -static bfd_reloc_status_type -special (bfd *abfd ATTRIBUTE_UNUSED, - arelent *reloc_entry ATTRIBUTE_UNUSED, - asymbol *symbol ATTRIBUTE_UNUSED, - PTR data ATTRIBUTE_UNUSED, - asection *input_section ATTRIBUTE_UNUSED, - bfd *output_bfd, - char **error_message ATTRIBUTE_UNUSED) -{ - if (output_bfd == (bfd *) NULL) - return bfd_reloc_continue; - - /* Adjust the reloc address to that in the output section. */ - reloc_entry->address += input_section->output_offset; - return bfd_reloc_ok; -} - -/* Perform a relocation as part of a final link. */ -static bfd_reloc_status_type -elf32_h8_final_link_relocate (unsigned long r_type, bfd *input_bfd, - bfd *output_bfd ATTRIBUTE_UNUSED, - asection *input_section ATTRIBUTE_UNUSED, - bfd_byte *contents, bfd_vma offset, - bfd_vma value, bfd_vma addend, - struct bfd_link_info *info ATTRIBUTE_UNUSED, - asection *sym_sec ATTRIBUTE_UNUSED, - int is_local ATTRIBUTE_UNUSED) -{ - bfd_byte *hit_data = contents + offset; - - switch (r_type) - { - case R_H8_NONE: - return bfd_reloc_ok; - - case R_H8_DIR32: - case R_H8_DIR32A16: - case R_H8_DIR24A8: - value += addend; - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_H8_DIR16: - case R_H8_DIR16A8: - case R_H8_DIR16R8: - value += addend; - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - /* AKA R_RELBYTE */ - case R_H8_DIR8: - value += addend; - - bfd_put_8 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_H8_DIR24R8: - value += addend; - - /* HIT_DATA is the address for the first byte for the relocated - value. Subtract 1 so that we can manipulate the data in 32-bit - hunks. */ - hit_data--; - - /* Clear out the top byte in value. */ - value &= 0xffffff; - - /* Retrieve the type byte for value from the section contents. */ - value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000); - - /* Now scribble it out in one 32-bit hunk. */ - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_H8_PCREL16: - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= offset; - value += addend; - - /* The value is relative to the start of the instruction, - not the relocation offset. Subtract 2 to account for - this minor issue. */ - value -= 2; - - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_H8_PCREL8: - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= offset; - value += addend; - - /* The value is relative to the start of the instruction, - not the relocation offset. Subtract 1 to account for - this minor issue. */ - value -= 1; - - bfd_put_8 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - default: - return bfd_reloc_notsupported; - } -} - -/* Relocate an H8 ELF section. */ -static bfd_boolean -elf32_h8_relocate_section (bfd *output_bfd, struct bfd_link_info *info, - bfd *input_bfd, asection *input_section, - bfd_byte *contents, Elf_Internal_Rela *relocs, - Elf_Internal_Sym *local_syms, - asection **local_sections) -{ - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - Elf_Internal_Rela *rel, *relend; - - if (info->relocatable) - return TRUE; - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - - rel = relocs; - relend = relocs + input_section->reloc_count; - for (; rel < relend; rel++) - { - unsigned int r_type; - unsigned long r_symndx; - Elf_Internal_Sym *sym; - asection *sec; - struct elf_link_hash_entry *h; - bfd_vma relocation; - bfd_reloc_status_type r; - - /* This is a final link. */ - r_symndx = ELF32_R_SYM (rel->r_info); - r_type = ELF32_R_TYPE (rel->r_info); - h = NULL; - sym = NULL; - sec = NULL; - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); - } - else - { - bfd_boolean unresolved_reloc, warned; - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - h, sec, relocation, - unresolved_reloc, warned); - } - - r = elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd, - input_section, - contents, rel->r_offset, - relocation, rel->r_addend, - info, sec, h == NULL); - - if (r != bfd_reloc_ok) - { - const char *name; - const char *msg = (const char *) 0; - arelent bfd_reloc; - reloc_howto_type *howto; - - elf32_h8_info_to_howto (input_bfd, &bfd_reloc, rel); - howto = bfd_reloc.howto; - - if (h != NULL) - name = h->root.root.string; - else - { - name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name)); - if (name == NULL || *name == '\0') - name = bfd_section_name (input_bfd, sec); - } - - switch (r) - { - case bfd_reloc_overflow: - if (! ((*info->callbacks->reloc_overflow) - (info, (h ? &h->root : NULL), name, howto->name, - (bfd_vma) 0, input_bfd, input_section, - rel->r_offset))) - return FALSE; - break; - - case bfd_reloc_undefined: - if (! ((*info->callbacks->undefined_symbol) - (info, name, input_bfd, input_section, - rel->r_offset, TRUE))) - return FALSE; - break; - - case bfd_reloc_outofrange: - msg = _("internal error: out of range error"); - goto common_error; - - case bfd_reloc_notsupported: - msg = _("internal error: unsupported relocation error"); - goto common_error; - - case bfd_reloc_dangerous: - msg = _("internal error: dangerous error"); - goto common_error; - - default: - msg = _("internal error: unknown error"); - /* fall through */ - - common_error: - if (!((*info->callbacks->warning) - (info, msg, name, input_bfd, input_section, - rel->r_offset))) - return FALSE; - break; - } - } - } - - return TRUE; -} - -/* Object files encode the specific H8 model they were compiled - for in the ELF flags field. - - Examine that field and return the proper BFD machine type for - the object file. */ -static unsigned long -elf32_h8_mach (flagword flags) -{ - switch (flags & EF_H8_MACH) - { - case E_H8_MACH_H8300: - default: - return bfd_mach_h8300; - - case E_H8_MACH_H8300H: - return bfd_mach_h8300h; - - case E_H8_MACH_H8300S: - return bfd_mach_h8300s; - - case E_H8_MACH_H8300HN: - return bfd_mach_h8300hn; - - case E_H8_MACH_H8300SN: - return bfd_mach_h8300sn; - - case E_H8_MACH_H8300SX: - return bfd_mach_h8300sx; - - case E_H8_MACH_H8300SXN: - return bfd_mach_h8300sxn; - } -} - -/* The final processing done just before writing out a H8 ELF object - file. We use this opportunity to encode the BFD machine type - into the flags field in the object file. */ - -static void -elf32_h8_final_write_processing (bfd *abfd, - bfd_boolean linker ATTRIBUTE_UNUSED) -{ - unsigned long val; - - switch (bfd_get_mach (abfd)) - { - default: - case bfd_mach_h8300: - val = E_H8_MACH_H8300; - break; - - case bfd_mach_h8300h: - val = E_H8_MACH_H8300H; - break; - - case bfd_mach_h8300s: - val = E_H8_MACH_H8300S; - break; - - case bfd_mach_h8300hn: - val = E_H8_MACH_H8300HN; - break; - - case bfd_mach_h8300sn: - val = E_H8_MACH_H8300SN; - break; - - case bfd_mach_h8300sx: - val = E_H8_MACH_H8300SX; - break; - - case bfd_mach_h8300sxn: - val = E_H8_MACH_H8300SXN; - break; - } - - elf_elfheader (abfd)->e_flags &= ~ (EF_H8_MACH); - elf_elfheader (abfd)->e_flags |= val; -} - -/* Return nonzero if ABFD represents a valid H8 ELF object file; also - record the encoded machine type found in the ELF flags. */ - -static bfd_boolean -elf32_h8_object_p (bfd *abfd) -{ - bfd_default_set_arch_mach (abfd, bfd_arch_h8300, - elf32_h8_mach (elf_elfheader (abfd)->e_flags)); - return TRUE; -} - -/* Merge backend specific data from an object file to the output - object file when linking. The only data we need to copy at this - time is the architecture/machine information. */ - -static bfd_boolean -elf32_h8_merge_private_bfd_data (bfd *ibfd, bfd *obfd) -{ - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return TRUE; - - if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) - && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) - { - if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), - bfd_get_mach (ibfd))) - return FALSE; - } - - return TRUE; -} - -/* This function handles relaxing for the H8.. - - There are a few relaxing opportunities available on the H8: - - jmp/jsr:24 -> bra/bsr:8 2 bytes - The jmp may be completely eliminated if the previous insn is a - conditional branch to the insn after the jump. In that case - we invert the branch and delete the jump and save 4 bytes. - - bCC:16 -> bCC:8 2 bytes - bsr:16 -> bsr:8 2 bytes - - bset:16 -> bset:8 2 bytes - bset:24/32 -> bset:8 4 bytes - (also applicable to other bit manipulation instructions) - - mov.b:16 -> mov.b:8 2 bytes - mov.b:24/32 -> mov.b:8 4 bytes - - bset:24/32 -> bset:16 2 bytes - (also applicable to other bit manipulation instructions) - - mov.[bwl]:24/32 -> mov.[bwl]:16 2 bytes */ - -static bfd_boolean -elf32_h8_relax_section (bfd *abfd, asection *sec, - struct bfd_link_info *link_info, bfd_boolean *again) -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *internal_relocs; - Elf_Internal_Rela *irel, *irelend; - bfd_byte *contents = NULL; - Elf_Internal_Sym *isymbuf = NULL; - static asection *last_input_section = NULL; - static Elf_Internal_Rela *last_reloc = NULL; - - /* Assume nothing changes. */ - *again = FALSE; - - /* We don't have to do anything for a relocatable link, if - this section does not have relocs, or if this is not a - code section. */ - if (link_info->relocatable - || (sec->flags & SEC_RELOC) == 0 - || sec->reloc_count == 0 - || (sec->flags & SEC_CODE) == 0) - return TRUE; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - - /* Get a copy of the native relocations. */ - internal_relocs = (_bfd_elf_link_read_relocs - (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, - link_info->keep_memory)); - if (internal_relocs == NULL) - goto error_return; - - if (sec != last_input_section) - last_reloc = NULL; - - last_input_section = sec; - - /* Walk through the relocs looking for relaxing opportunities. */ - irelend = internal_relocs + sec->reloc_count; - for (irel = internal_relocs; irel < irelend; irel++) - { - bfd_vma symval; - - /* Keep track of the previous reloc so that we can delete - some long jumps created by the compiler. */ - if (irel != internal_relocs) - last_reloc = irel - 1; - - if (ELF32_R_TYPE (irel->r_info) != R_H8_DIR24R8 - && ELF32_R_TYPE (irel->r_info) != R_H8_PCREL16 - && ELF32_R_TYPE (irel->r_info) != R_H8_DIR16A8 - && ELF32_R_TYPE (irel->r_info) != R_H8_DIR24A8 - && ELF32_R_TYPE (irel->r_info) != R_H8_DIR32A16) - continue; - - /* Get the section contents if we haven't done so already. */ - if (contents == NULL) - { - /* Get cached copy if it exists. */ - if (elf_section_data (sec)->this_hdr.contents != NULL) - contents = elf_section_data (sec)->this_hdr.contents; - else - { - /* Go get them off disk. */ - if (!bfd_malloc_and_get_section (abfd, sec, &contents)) - goto error_return; - } - } - - /* Read this BFD's local symbols if we haven't done so already. */ - if (isymbuf == NULL && symtab_hdr->sh_info != 0) - { - isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; - if (isymbuf == NULL) - isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - if (isymbuf == NULL) - goto error_return; - } - - /* Get the value of the symbol referred to by the reloc. */ - if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) - { - /* A local symbol. */ - Elf_Internal_Sym *isym; - asection *sym_sec; - - isym = isymbuf + ELF32_R_SYM (irel->r_info); - sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); - symval = isym->st_value; - /* If the reloc is absolute, it will not have - a symbol or section associated with it. */ - if (sym_sec) - symval += sym_sec->output_section->vma - + sym_sec->output_offset; - } - else - { - unsigned long indx; - struct elf_link_hash_entry *h; - - /* An external symbol. */ - indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; - h = elf_sym_hashes (abfd)[indx]; - BFD_ASSERT (h != NULL); - if (h->root.type != bfd_link_hash_defined - && h->root.type != bfd_link_hash_defweak) - { - /* This appears to be a reference to an undefined - symbol. Just ignore it--it will be caught by the - regular reloc processing. */ - continue; - } - - symval = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - } - - /* For simplicity of coding, we are going to modify the section - contents, the section relocs, and the BFD symbol table. We - must tell the rest of the code not to free up this - information. It would be possible to instead create a table - of changes which have to be made, as is done in coff-mips.c; - that would be more work, but would require less memory when - the linker is run. */ - switch (ELF32_R_TYPE (irel->r_info)) - { - /* Try to turn a 24-bit absolute branch/call into an 8-bit - pc-relative branch/call. */ - case R_H8_DIR24R8: - { - bfd_vma value = symval + irel->r_addend; - bfd_vma dot, gap; - - /* Get the address of this instruction. */ - dot = (sec->output_section->vma - + sec->output_offset + irel->r_offset - 1); - - /* Compute the distance from this insn to the branch target. */ - gap = value - dot; - - /* If the distance is within -126..+130 inclusive, then we can - relax this jump. +130 is valid since the target will move - two bytes closer if we do relax this branch. */ - if ((int) gap >= -126 && (int) gap <= 130) - { - unsigned char code; - - /* Note that we've changed the relocs, section contents, - etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Get the instruction code being relaxed. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - /* If the previous instruction conditionally jumped around - this instruction, we may be able to reverse the condition - and redirect the previous instruction to the target of - this instruction. - - Such sequences are used by the compiler to deal with - long conditional branches. - - Only perform this optimisation for jumps (code 0x5a) not - subroutine calls, as otherwise it could transform: - - mov.w r0,r0 - beq .L1 - jsr @_bar - .L1: rts - _bar: rts - into: - mov.w r0,r0 - bne _bar - rts - _bar: rts - - which changes the call (jsr) into a branch (bne). */ - if (code == 0x5a - && (int) gap <= 130 - && (int) gap >= -128 - && last_reloc - && ELF32_R_TYPE (last_reloc->r_info) == R_H8_PCREL8 - && ELF32_R_SYM (last_reloc->r_info) < symtab_hdr->sh_info) - { - bfd_vma last_value; - asection *last_sym_sec; - Elf_Internal_Sym *last_sym; - - /* We will need to examine the symbol used by the - previous relocation. */ - - last_sym = isymbuf + ELF32_R_SYM (last_reloc->r_info); - last_sym_sec - = bfd_section_from_elf_index (abfd, last_sym->st_shndx); - last_value = (last_sym->st_value - + last_sym_sec->output_section->vma - + last_sym_sec->output_offset); - - /* Verify that the previous relocation was for a - branch around this instruction and that no symbol - exists at the current location. */ - if (last_value == dot + 4 - && last_reloc->r_offset + 2 == irel->r_offset - && ! elf32_h8_symbol_address_p (abfd, sec, dot)) - { - /* We can eliminate this jump. Twiddle the - previous relocation as necessary. */ - irel->r_info - = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - ELF32_R_TYPE (R_H8_NONE)); - - last_reloc->r_info - = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - ELF32_R_TYPE (R_H8_PCREL8)); - last_reloc->r_addend = irel->r_addend; - - code = bfd_get_8 (abfd, - contents + last_reloc->r_offset - 1); - code ^= 1; - bfd_put_8 (abfd, - code, - contents + last_reloc->r_offset - 1); - - /* Delete four bytes of data. */ - if (!elf32_h8_relax_delete_bytes (abfd, sec, - irel->r_offset - 1, - 4)) - goto error_return; - - *again = TRUE; - break; - } - } - - if (code == 0x5e) - /* This is jsr. */ - bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 1); - else if (code == 0x5a) - /* This is jmp. */ - bfd_put_8 (abfd, 0x40, contents + irel->r_offset - 1); - else - abort (); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_H8_PCREL8); - - /* Delete two bytes of data. */ - if (!elf32_h8_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - break; - } - - /* Try to turn a 16-bit pc-relative branch into a 8-bit pc-relative - branch. */ - case R_H8_PCREL16: - { - bfd_vma value = symval + irel->r_addend; - bfd_vma dot; - bfd_vma gap; - - /* Get the address of this instruction. */ - dot = (sec->output_section->vma - + sec->output_offset - + irel->r_offset - 2); - - gap = value - dot; - - /* If the distance is within -126..+130 inclusive, then we can - relax this jump. +130 is valid since the target will move - two bytes closer if we do relax this branch. */ - if ((int) gap >= -126 && (int) gap <= 130) - { - unsigned char code; - - /* Note that we've changed the relocs, section contents, - etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Get the opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 2); - - if (code == 0x58) - { - /* bCC:16 -> bCC:8 */ - /* Get the second byte of the original insn, which - contains the condition code. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - /* Compute the fisrt byte of the relaxed - instruction. The original sequence 0x58 0xX0 - is relaxed to 0x4X, where X represents the - condition code. */ - code &= 0xf0; - code >>= 4; - code |= 0x40; - bfd_put_8 (abfd, code, contents + irel->r_offset - 2); - } - else if (code == 0x5c) - /* This is bsr. */ - bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 2); - else - abort (); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_H8_PCREL8); - irel->r_offset--; - - /* Delete two bytes of data. */ - if (!elf32_h8_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - break; - } - - /* This is a 16-bit absolute address in one of the following - instructions: - - "band", "bclr", "biand", "bild", "bior", "bist", "bixor", - "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and - "mov.b" - - We may relax this into an 8-bit absolute address if it's in - the right range. */ - case R_H8_DIR16A8: - { - bfd_vma value; - - value = bfd_h8300_pad_address (abfd, symval + irel->r_addend); - if (value >= 0xffffff00u) - { - unsigned char code; - unsigned char temp_code; - - /* Note that we've changed the relocs, section contents, - etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Get the opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 2); - - /* All instructions with R_H8_DIR16A8 start with - 0x6a. */ - if (code != 0x6a) - abort (); - - temp_code = code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - /* If this is a mov.b instruction, clear the lower - nibble, which contains the source/destination - register number. */ - if ((temp_code & 0x10) != 0x10) - temp_code &= 0xf0; - - switch (temp_code) - { - case 0x00: - /* This is mov.b @aa:16,Rd. */ - bfd_put_8 (abfd, (code & 0xf) | 0x20, - contents + irel->r_offset - 2); - break; - case 0x80: - /* This is mov.b Rs,@aa:16. */ - bfd_put_8 (abfd, (code & 0xf) | 0x30, - contents + irel->r_offset - 2); - break; - case 0x18: - /* This is a bit-maniputation instruction that - stores one bit into memory, one of "bclr", - "bist", "bnot", "bset", and "bst". */ - bfd_put_8 (abfd, 0x7f, contents + irel->r_offset - 2); - break; - case 0x10: - /* This is a bit-maniputation instruction that - loads one bit from memory, one of "band", - "biand", "bild", "bior", "bixor", "bld", "bor", - "btst", and "bxor". */ - bfd_put_8 (abfd, 0x7e, contents + irel->r_offset - 2); - break; - default: - abort (); - } - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_H8_DIR8); - - /* Move the relocation. */ - irel->r_offset--; - - /* Delete two bytes of data. */ - if (!elf32_h8_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - break; - } - - /* This is a 24-bit absolute address in one of the following - instructions: - - "band", "bclr", "biand", "bild", "bior", "bist", "bixor", - "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and - "mov.b" - - We may relax this into an 8-bit absolute address if it's in - the right range. */ - case R_H8_DIR24A8: - { - bfd_vma value; - - value = bfd_h8300_pad_address (abfd, symval + irel->r_addend); - if (value >= 0xffffff00u) - { - unsigned char code; - unsigned char temp_code; - - /* Note that we've changed the relocs, section contents, - etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Get the opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 2); - - /* All instructions with R_H8_DIR24A8 start with - 0x6a. */ - if (code != 0x6a) - abort (); - - temp_code = code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - /* If this is a mov.b instruction, clear the lower - nibble, which contains the source/destination - register number. */ - if ((temp_code & 0x30) != 0x30) - temp_code &= 0xf0; - - switch (temp_code) - { - case 0x20: - /* This is mov.b @aa:24/32,Rd. */ - bfd_put_8 (abfd, (code & 0xf) | 0x20, - contents + irel->r_offset - 2); - break; - case 0xa0: - /* This is mov.b Rs,@aa:24/32. */ - bfd_put_8 (abfd, (code & 0xf) | 0x30, - contents + irel->r_offset - 2); - break; - case 0x38: - /* This is a bit-maniputation instruction that - stores one bit into memory, one of "bclr", - "bist", "bnot", "bset", and "bst". */ - bfd_put_8 (abfd, 0x7f, contents + irel->r_offset - 2); - break; - case 0x30: - /* This is a bit-maniputation instruction that - loads one bit from memory, one of "band", - "biand", "bild", "bior", "bixor", "bld", "bor", - "btst", and "bxor". */ - bfd_put_8 (abfd, 0x7e, contents + irel->r_offset - 2); - break; - default: - abort(); - } - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_H8_DIR8); - irel->r_offset--; - - /* Delete two bytes of data. */ - if (!elf32_h8_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 4)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - break; - } - } - - /* Fall through. */ - - /* This is a 24-/32-bit absolute address in one of the - following instructions: - - "band", "bclr", "biand", "bild", "bior", "bist", - "bixor", "bld", "bnot", "bor", "bset", "bst", "btst", - "bxor", "ldc.w", "stc.w" and "mov.[bwl]" - - We may relax this into an 16-bit absolute address if it's - in the right range. */ - case R_H8_DIR32A16: - { - bfd_vma value; - - value = bfd_h8300_pad_address (abfd, symval + irel->r_addend); - if (value <= 0x7fff || value >= 0xffff8000u) - { - unsigned char code; - - /* Note that we've changed the relocs, section contents, - etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Get the opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - /* Fix the opcode. For all the instructions that - belong to this relaxation, we simply need to turn - off bit 0x20 in the previous byte. */ - code &= ~0x20; - - bfd_put_8 (abfd, code, contents + irel->r_offset - 1); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_H8_DIR16); - - /* Delete two bytes of data. */ - if (!elf32_h8_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - break; - } - - default: - break; - } - } - - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - { - if (! link_info->keep_memory) - free (isymbuf); - else - symtab_hdr->contents = (unsigned char *) isymbuf; - } - - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != contents) - { - if (! link_info->keep_memory) - free (contents); - else - { - /* Cache the section contents for elf_link_input_bfd. */ - elf_section_data (sec)->this_hdr.contents = contents; - } - } - - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - - return TRUE; - - error_return: - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != contents) - free (contents); - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - return FALSE; -} - -/* Delete some bytes from a section while relaxing. */ - -static bfd_boolean -elf32_h8_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count) -{ - Elf_Internal_Shdr *symtab_hdr; - unsigned int sec_shndx; - bfd_byte *contents; - Elf_Internal_Rela *irel, *irelend; - Elf_Internal_Rela *irelalign; - Elf_Internal_Sym *isym; - Elf_Internal_Sym *isymend; - bfd_vma toaddr; - struct elf_link_hash_entry **sym_hashes; - struct elf_link_hash_entry **end_hashes; - unsigned int symcount; - - sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); - - contents = elf_section_data (sec)->this_hdr.contents; - - /* The deletion must stop at the next ALIGN reloc for an aligment - power larger than the number of bytes we are deleting. */ - - irelalign = NULL; - toaddr = sec->size; - - irel = elf_section_data (sec)->relocs; - irelend = irel + sec->reloc_count; - - /* Actually delete the bytes. */ - memmove (contents + addr, contents + addr + count, - (size_t) (toaddr - addr - count)); - sec->size -= count; - - /* Adjust all the relocs. */ - for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) - { - /* Get the new reloc address. */ - if ((irel->r_offset > addr - && irel->r_offset < toaddr)) - irel->r_offset -= count; - } - - /* Adjust the local symbols defined in this section. */ - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - isym = (Elf_Internal_Sym *) symtab_hdr->contents; - isymend = isym + symtab_hdr->sh_info; - for (; isym < isymend; isym++) - { - if (isym->st_shndx == sec_shndx - && isym->st_value > addr - && isym->st_value < toaddr) - isym->st_value -= count; - } - - /* Now adjust the global symbols defined in this section. */ - symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) - - symtab_hdr->sh_info); - sym_hashes = elf_sym_hashes (abfd); - end_hashes = sym_hashes + symcount; - for (; sym_hashes < end_hashes; sym_hashes++) - { - struct elf_link_hash_entry *sym_hash = *sym_hashes; - if ((sym_hash->root.type == bfd_link_hash_defined - || sym_hash->root.type == bfd_link_hash_defweak) - && sym_hash->root.u.def.section == sec - && sym_hash->root.u.def.value > addr - && sym_hash->root.u.def.value < toaddr) - { - sym_hash->root.u.def.value -= count; - } - } - - return TRUE; -} - -/* Return TRUE if a symbol exists at the given address, else return - FALSE. */ -static bfd_boolean -elf32_h8_symbol_address_p (bfd *abfd, asection *sec, bfd_vma addr) -{ - Elf_Internal_Shdr *symtab_hdr; - unsigned int sec_shndx; - Elf_Internal_Sym *isym; - Elf_Internal_Sym *isymend; - struct elf_link_hash_entry **sym_hashes; - struct elf_link_hash_entry **end_hashes; - unsigned int symcount; - - sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); - - /* Examine all the symbols. */ - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - isym = (Elf_Internal_Sym *) symtab_hdr->contents; - isymend = isym + symtab_hdr->sh_info; - for (; isym < isymend; isym++) - { - if (isym->st_shndx == sec_shndx - && isym->st_value == addr) - return TRUE; - } - - symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) - - symtab_hdr->sh_info); - sym_hashes = elf_sym_hashes (abfd); - end_hashes = sym_hashes + symcount; - for (; sym_hashes < end_hashes; sym_hashes++) - { - struct elf_link_hash_entry *sym_hash = *sym_hashes; - if ((sym_hash->root.type == bfd_link_hash_defined - || sym_hash->root.type == bfd_link_hash_defweak) - && sym_hash->root.u.def.section == sec - && sym_hash->root.u.def.value == addr) - return TRUE; - } - - return FALSE; -} - -/* This is a version of bfd_generic_get_relocated_section_contents - which uses elf32_h8_relocate_section. */ - -static bfd_byte * -elf32_h8_get_relocated_section_contents (bfd *output_bfd, - struct bfd_link_info *link_info, - struct bfd_link_order *link_order, - bfd_byte *data, - bfd_boolean relocatable, - asymbol **symbols) -{ - Elf_Internal_Shdr *symtab_hdr; - asection *input_section = link_order->u.indirect.section; - bfd *input_bfd = input_section->owner; - asection **sections = NULL; - Elf_Internal_Rela *internal_relocs = NULL; - Elf_Internal_Sym *isymbuf = NULL; - - /* We only need to handle the case of relaxing, or of having a - particular set of section contents, specially. */ - if (relocatable - || elf_section_data (input_section)->this_hdr.contents == NULL) - return bfd_generic_get_relocated_section_contents (output_bfd, link_info, - link_order, data, - relocatable, - symbols); - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - - memcpy (data, elf_section_data (input_section)->this_hdr.contents, - (size_t) input_section->size); - - if ((input_section->flags & SEC_RELOC) != 0 - && input_section->reloc_count > 0) - { - asection **secpp; - Elf_Internal_Sym *isym, *isymend; - bfd_size_type amt; - - internal_relocs = (_bfd_elf_link_read_relocs - (input_bfd, input_section, (PTR) NULL, - (Elf_Internal_Rela *) NULL, FALSE)); - if (internal_relocs == NULL) - goto error_return; - - if (symtab_hdr->sh_info != 0) - { - isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; - if (isymbuf == NULL) - isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - if (isymbuf == NULL) - goto error_return; - } - - amt = symtab_hdr->sh_info; - amt *= sizeof (asection *); - sections = (asection **) bfd_malloc (amt); - if (sections == NULL && amt != 0) - goto error_return; - - isymend = isymbuf + symtab_hdr->sh_info; - for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) - { - asection *isec; - - if (isym->st_shndx == SHN_UNDEF) - isec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - isec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - isec = bfd_com_section_ptr; - else - isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); - - *secpp = isec; - } - - if (! elf32_h8_relocate_section (output_bfd, link_info, input_bfd, - input_section, data, internal_relocs, - isymbuf, sections)) - goto error_return; - - if (sections != NULL) - free (sections); - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (elf_section_data (input_section)->relocs != internal_relocs) - free (internal_relocs); - } - - return data; - - error_return: - if (sections != NULL) - free (sections); - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (internal_relocs != NULL - && elf_section_data (input_section)->relocs != internal_relocs) - free (internal_relocs); - return NULL; -} - -static asection * -elf32_h8_gc_mark_hook (asection *sec, - struct bfd_link_info *info ATTRIBUTE_UNUSED, - Elf_Internal_Rela *rel ATTRIBUTE_UNUSED, - struct elf_link_hash_entry *h, - Elf_Internal_Sym *sym) -{ - if (h != NULL) - { - switch (h->root.type) - { - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - return h->root.u.def.section; - - case bfd_link_hash_common: - return h->root.u.c.p->section; - - default: - break; - } - } - else - return bfd_section_from_elf_index (sec->owner, sym->st_shndx); - return NULL; -} - -static bfd_boolean -elf32_h8_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, - struct bfd_link_info *info ATTRIBUTE_UNUSED, - asection *sec ATTRIBUTE_UNUSED, - const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) -{ - return TRUE; -} - - -#define TARGET_BIG_SYM bfd_elf32_h8300_vec -#define TARGET_BIG_NAME "elf32-h8300" -#define ELF_ARCH bfd_arch_h8300 -#define ELF_MACHINE_CODE EM_H8_300 -#define ELF_MAXPAGESIZE 0x1 -#define bfd_elf32_bfd_reloc_type_lookup elf32_h8_reloc_type_lookup -#define elf_info_to_howto elf32_h8_info_to_howto -#define elf_info_to_howto_rel elf32_h8_info_to_howto_rel - -/* So we can set/examine bits in e_flags to get the specific - H8 architecture in use. */ -#define elf_backend_final_write_processing \ - elf32_h8_final_write_processing -#define elf_backend_object_p \ - elf32_h8_object_p -#define bfd_elf32_bfd_merge_private_bfd_data \ - elf32_h8_merge_private_bfd_data -#define elf_backend_gc_mark_hook elf32_h8_gc_mark_hook -#define elf_backend_gc_sweep_hook elf32_h8_gc_sweep_hook - -/* ??? when elf_backend_relocate_section is not defined, elf32-target.h - defaults to using _bfd_generic_link_hash_table_create, but - bfd_elf_size_dynamic_sections uses - dynobj = elf_hash_table (info)->dynobj; - and thus requires an elf hash table. */ -#define bfd_elf32_bfd_link_hash_table_create _bfd_elf_link_hash_table_create - -/* Use an H8 specific linker, not the ELF generic linker. */ -#define elf_backend_relocate_section elf32_h8_relocate_section -#define elf_backend_rela_normal 1 -#define elf_backend_can_gc_sections 1 - -/* And relaxing stuff. */ -#define bfd_elf32_bfd_relax_section elf32_h8_relax_section -#define bfd_elf32_bfd_get_relocated_section_contents \ - elf32_h8_get_relocated_section_contents - - -#include "elf32-target.h" |