X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;ds=sidebyside;f=bfd%2Felf32-h8300.c;h=3daef62c939cc21134642eff62c171066ef04d14;hb=7bf6dedeec4df6208c11c0bc2467dfda26a254ff;hp=09604e78567f53bd1d776303aa363b15cc867a0c;hpb=b34976b65aea8f33690229600bbf4527ec3118e1;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-h8300.c b/bfd/elf32-h8300.c index 09604e7856..3daef62c93 100644 --- a/bfd/elf32-h8300.c +++ b/bfd/elf32-h8300.c @@ -1,5 +1,5 @@ -/* Generic support for 32-bit ELF - Copyright 1993, 1995, 1998, 1999, 2001, 2002 +/* 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. @@ -25,38 +25,38 @@ #include "elf/h8.h" static reloc_howto_type *elf32_h8_reloc_type_lookup - PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); + (bfd *abfd, bfd_reloc_code_real_type code); static void elf32_h8_info_to_howto - PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); + (bfd *, arelent *, Elf_Internal_Rela *); static void elf32_h8_info_to_howto_rel - PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); -static unsigned long elf32_h8_mach - PARAMS ((flagword)); -static void elf32_h8_final_write_processing - PARAMS ((bfd *, bfd_boolean)); -static bfd_boolean elf32_h8_object_p - PARAMS ((bfd *)); -static bfd_boolean elf32_h8_merge_private_bfd_data - PARAMS ((bfd *, bfd *)); + (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 - PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); + (bfd *, asection *, struct bfd_link_info *, bfd_boolean *); static bfd_boolean elf32_h8_relax_delete_bytes - PARAMS ((bfd *, asection *, bfd_vma, int)); -static bfd_boolean elf32_h8_symbol_address_p - PARAMS ((bfd *, asection *, bfd_vma)); + (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 - PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, - bfd_byte *, bfd_boolean, asymbol **)); + (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 - PARAMS ((unsigned long, bfd *, bfd *, asection *, - bfd_byte *, bfd_vma, bfd_vma, bfd_vma, - struct bfd_link_info *, asection *, int)); + (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 - PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, - bfd_byte *, Elf_Internal_Rela *, - Elf_Internal_Sym *, asection **)); + (bfd *, struct bfd_link_info *, bfd *, asection *, + bfd_byte *, Elf_Internal_Rela *, + Elf_Internal_Sym *, asection **); static bfd_reloc_status_type special - PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + (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. */ @@ -69,8 +69,8 @@ static reloc_howto_type h8_elf_howto_table[] = { 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - special, /* special_function */ + complain_overflow_dont,/* complain_on_overflow */ + special, /* special_function */ "R_H8_NONE", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ @@ -83,8 +83,8 @@ static reloc_howto_type h8_elf_howto_table[] = { 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - special, /* special_function */ + complain_overflow_dont,/* complain_on_overflow */ + special, /* special_function */ "R_H8_DIR32", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ @@ -97,8 +97,8 @@ static reloc_howto_type h8_elf_howto_table[] = { 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - special, /* special_function */ + complain_overflow_dont,/* complain_on_overflow */ + special, /* special_function */ "R_H8_DIR16", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ @@ -111,9 +111,9 @@ static reloc_howto_type h8_elf_howto_table[] = { 8, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - special, /* special_function */ - "R_H8_DIR16", /* name */ + complain_overflow_dont,/* complain_on_overflow */ + special, /* special_function */ + "R_H8_DIR8", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0x000000ff, /* dst_mask */ @@ -126,7 +126,7 @@ static reloc_howto_type h8_elf_howto_table[] = { FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - special, /* special_function */ + special, /* special_function */ "R_H8_DIR16A8", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ @@ -140,7 +140,7 @@ static reloc_howto_type h8_elf_howto_table[] = { FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - special, /* special_function */ + special, /* special_function */ "R_H8_DIR16R8", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ @@ -154,7 +154,7 @@ static reloc_howto_type h8_elf_howto_table[] = { FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - special, /* special_function */ + special, /* special_function */ "R_H8_DIR24A8", /* name */ TRUE, /* partial_inplace */ 0xff000000, /* src_mask */ @@ -168,7 +168,7 @@ static reloc_howto_type h8_elf_howto_table[] = { FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ - special, /* special_function */ + special, /* special_function */ "R_H8_DIR24R8", /* name */ TRUE, /* partial_inplace */ 0xff000000, /* src_mask */ @@ -181,9 +181,9 @@ static reloc_howto_type h8_elf_howto_table[] = { 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - special, /* special_function */ - "R_H8_DIR32", /* name */ + complain_overflow_dont,/* complain_on_overflow */ + special, /* special_function */ + "R_H8_DIR32A16", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ @@ -195,8 +195,8 @@ static reloc_howto_type h8_elf_howto_table[] = { 16, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - special, /* special_function */ + complain_overflow_signed,/* complain_on_overflow */ + special, /* special_function */ "R_H8_PCREL16", /* name */ FALSE, /* partial_inplace */ 0xffff, /* src_mask */ @@ -209,8 +209,8 @@ static reloc_howto_type h8_elf_howto_table[] = { 8, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - special, /* special_function */ + complain_overflow_signed,/* complain_on_overflow */ + special, /* special_function */ "R_H8_PCREL8", /* name */ FALSE, /* partial_inplace */ 0xff, /* src_mask */ @@ -225,7 +225,7 @@ struct elf_reloc_map { unsigned char howto_index; }; -/* An array mapping BFD reloc codes to SH ELF relocs. */ +/* 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 }, @@ -243,9 +243,8 @@ static const struct elf_reloc_map h8_reloc_map[] = { static reloc_howto_type * -elf32_h8_reloc_type_lookup (abfd, code) - bfd *abfd ATTRIBUTE_UNUSED; - bfd_reloc_code_real_type code; +elf32_h8_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) { unsigned int i; @@ -258,10 +257,8 @@ elf32_h8_reloc_type_lookup (abfd, code) } static void -elf32_h8_info_to_howto (abfd, bfd_reloc, elf_reloc) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *bfd_reloc; - Elf_Internal_Rela *elf_reloc; +elf32_h8_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, + Elf_Internal_Rela *elf_reloc) { unsigned int r; unsigned int i; @@ -277,10 +274,8 @@ elf32_h8_info_to_howto (abfd, bfd_reloc, elf_reloc) } static void -elf32_h8_info_to_howto_rel (abfd, bfd_reloc, elf_reloc) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *bfd_reloc; - Elf_Internal_Rela *elf_reloc ATTRIBUTE_UNUSED; +elf32_h8_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, + Elf_Internal_Rela *elf_reloc ATTRIBUTE_UNUSED) { unsigned int r; @@ -294,15 +289,13 @@ elf32_h8_info_to_howto_rel (abfd, bfd_reloc, elf_reloc) 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 (abfd, reloc_entry, symbol, data, input_section, output_bfd, - error_message) - 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; +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; @@ -314,26 +307,19 @@ special (abfd, reloc_entry, symbol, data, input_section, output_bfd, /* Perform a relocation as part of a final link. */ static bfd_reloc_status_type -elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd, - input_section, contents, offset, value, - addend, info, sym_sec, is_local) - 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; +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; @@ -362,7 +348,7 @@ elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd, 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 32bit + value. Subtract 1 so that we can manipulate the data in 32-bit hunks. */ hit_data--; @@ -372,7 +358,7 @@ elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd, /* 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 32bit hunk. */ + /* Now scribble it out in one 32-bit hunk. */ bfd_put_32 (input_bfd, value, hit_data); return bfd_reloc_ok; @@ -411,22 +397,17 @@ elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd, /* Relocate an H8 ELF section. */ static bfd_boolean -elf32_h8_relocate_section (output_bfd, info, input_bfd, input_section, - contents, relocs, local_syms, local_sections) - 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; +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->relocateable) + if (info->relocatable) return TRUE; symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; @@ -454,32 +435,16 @@ elf32_h8_relocate_section (output_bfd, info, input_bfd, input_section, { sym = local_syms + r_symndx; sec = local_sections[r_symndx]; - relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); + relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); } else { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - sec = h->root.u.def.section; - relocation = (h->root.u.def.value - + sec->output_section->vma - + sec->output_offset); - } - else if (h->root.type == bfd_link_hash_undefweak) - relocation = 0; - else - { - if (! ((*info->callbacks->undefined_symbol) - (info, h->root.root.string, input_bfd, - input_section, rel->r_offset, TRUE))) - return FALSE; - relocation = 0; - } + 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, @@ -559,8 +524,7 @@ elf32_h8_relocate_section (output_bfd, info, input_bfd, input_section, Examine that field and return the proper BFD machine type for the object file. */ static unsigned long -elf32_h8_mach (flags) - flagword flags; +elf32_h8_mach (flagword flags) { switch (flags & EF_H8_MACH) { @@ -573,6 +537,18 @@ elf32_h8_mach (flags) 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; } } @@ -581,9 +557,8 @@ elf32_h8_mach (flags) into the flags field in the object file. */ static void -elf32_h8_final_write_processing (abfd, linker) - bfd *abfd; - bfd_boolean linker ATTRIBUTE_UNUSED; +elf32_h8_final_write_processing (bfd *abfd, + bfd_boolean linker ATTRIBUTE_UNUSED) { unsigned long val; @@ -601,6 +576,22 @@ elf32_h8_final_write_processing (abfd, linker) 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); @@ -611,8 +602,7 @@ elf32_h8_final_write_processing (abfd, linker) record the encoded machine type found in the ELF flags. */ static bfd_boolean -elf32_h8_object_p (abfd) - bfd *abfd; +elf32_h8_object_p (bfd *abfd) { bfd_default_set_arch_mach (abfd, bfd_arch_h8300, elf32_h8_mach (elf_elfheader (abfd)->e_flags)); @@ -624,9 +614,7 @@ elf32_h8_object_p (abfd) time is the architecture/machine information. */ static bfd_boolean -elf32_h8_merge_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; +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) @@ -636,8 +624,8 @@ elf32_h8_merge_private_bfd_data (ibfd, obfd) && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) { if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), - bfd_get_mach (ibfd))) - return FALSE; + bfd_get_mach (ibfd))) + return FALSE; } return TRUE; @@ -645,7 +633,7 @@ elf32_h8_merge_private_bfd_data (ibfd, obfd) /* This function handles relaxing for the H8.. - There's a few relaxing opportunites available on 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 @@ -655,17 +643,21 @@ elf32_h8_merge_private_bfd_data (ibfd, obfd) 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 (abfd, sec, link_info, again) - bfd *abfd; - asection *sec; - struct bfd_link_info *link_info; - bfd_boolean *again; +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; @@ -678,24 +670,19 @@ elf32_h8_relax_section (abfd, sec, link_info, again) /* Assume nothing changes. */ *again = FALSE; - /* We don't have to do anything for a relocateable link, if + /* 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->relocateable + if (link_info->relocatable || (sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0 || (sec->flags & SEC_CODE) == 0) return TRUE; - /* If this is the first time we have been called for this section, - initialize the cooked size. */ - if (sec->_cooked_size == 0) - sec->_cooked_size = sec->_raw_size; - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; /* Get a copy of the native relocations. */ - internal_relocs = (_bfd_elf32_link_read_relocs + internal_relocs = (_bfd_elf_link_read_relocs (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, link_info->keep_memory)); if (internal_relocs == NULL) @@ -733,12 +720,7 @@ elf32_h8_relax_section (abfd, sec, link_info, again) else { /* Go get them off disk. */ - contents = (bfd_byte *) bfd_malloc (sec->_raw_size); - if (contents == NULL) - goto error_return; - - if (! bfd_get_section_contents (abfd, sec, contents, - (file_ptr) 0, sec->_raw_size)) + if (!bfd_malloc_and_get_section (abfd, sec, &contents)) goto error_return; } } @@ -764,9 +746,12 @@ elf32_h8_relax_section (abfd, sec, link_info, again) isym = isymbuf + ELF32_R_SYM (irel->r_info); sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); - symval = (isym->st_value - + sym_sec->output_section->vma - + sym_sec->output_offset); + 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 { @@ -800,7 +785,7 @@ elf32_h8_relax_section (abfd, sec, link_info, again) the linker is run. */ switch (ELF32_R_TYPE (irel->r_info)) { - /* Try to turn a 24 bit absolute branch/call into an 8 bit + /* Try to turn a 24-bit absolute branch/call into an 8-bit pc-relative branch/call. */ case R_H8_DIR24R8: { @@ -911,8 +896,10 @@ elf32_h8_relax_section (abfd, sec, link_info, again) } 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 (); @@ -933,7 +920,7 @@ elf32_h8_relax_section (abfd, sec, link_info, again) break; } - /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative + /* Try to turn a 16-bit pc-relative branch into a 8-bit pc-relative branch. */ case R_H8_PCREL16: { @@ -967,14 +954,21 @@ elf32_h8_relax_section (abfd, sec, link_info, again) if (code == 0x58) { /* bCC:16 -> bCC:8 */ - /* Get the condition code from the original insn. */ + /* 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 (); @@ -996,21 +990,24 @@ elf32_h8_relax_section (abfd, sec, link_info, again) break; } - /* This is a 16 bit absolute address in a "mov.b" insn, which may - become an 8 bit absolute address if its in the right range. */ + /* 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 = symval + irel->r_addend; + bfd_vma value; - if ((bfd_get_mach (abfd) == bfd_mach_h8300 - && value >= 0xff00 - && value <= 0xffff) - || ((bfd_get_mach (abfd) == bfd_mach_h8300h - || bfd_get_mach (abfd) == bfd_mach_h8300s) - && value >= 0xffff00 - && value <= 0xffffff)) + 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. */ @@ -1021,27 +1018,54 @@ elf32_h8_relax_section (abfd, sec, link_info, again) /* Get the opcode. */ code = bfd_get_8 (abfd, contents + irel->r_offset - 2); - /* Sanity check. */ + /* All instructions with R_H8_DIR16A8 start with + 0x6a. */ if (code != 0x6a) abort (); - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); + 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; - if ((code & 0xf0) == 0x00) - bfd_put_8 (abfd, - (code & 0xf) | 0x20, - contents + irel->r_offset - 2); - else if ((code & 0xf0) == 0x80) - bfd_put_8 (abfd, - (code & 0xf) | 0x30, - contents + irel->r_offset - 2); - else - abort (); + 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)) @@ -1054,21 +1078,24 @@ elf32_h8_relax_section (abfd, sec, link_info, again) break; } - /* This is a 24 bit absolute address in a "mov.b" insn, which may - become an 8 bit absolute address if its in the right range. */ + /* 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 = symval + irel->r_addend; + bfd_vma value; - if ((bfd_get_mach (abfd) == bfd_mach_h8300 - && value >= 0xff00 - && value <= 0xffff) - || ((bfd_get_mach (abfd) == bfd_mach_h8300h - || bfd_get_mach (abfd) == bfd_mach_h8300s) - && value >= 0xffff00 - && value <= 0xffffff)) + 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. */ @@ -1079,46 +1106,82 @@ elf32_h8_relax_section (abfd, sec, link_info, again) /* Get the opcode. */ code = bfd_get_8 (abfd, contents + irel->r_offset - 2); - /* Sanity check. */ + /* All instructions with R_H8_DIR24A8 start with + 0x6a. */ if (code != 0x6a) abort (); - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); + temp_code = code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - if ((code & 0xf0) == 0x00) - bfd_put_8 (abfd, - (code & 0xf) | 0x20, - contents + irel->r_offset - 2); - else if ((code & 0xf0) == 0x80) - bfd_put_8 (abfd, - (code & 0xf) | 0x30, - contents + irel->r_offset - 2); - else - abort (); + /* 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, 2)) + 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; } } - /* FALLTHRU */ + /* Fall through. */ + + /* This is a 24-/32-bit absolute address in one of the + following instructions: - /* This is a 24/32bit absolute address in a "mov" insn, which may - become a 16bit absoulte address if it is in the right range. */ + "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 = symval + irel->r_addend; + bfd_vma value; - if (value <= 0x7fff || value >= 0xff8000) + value = bfd_h8300_pad_address (abfd, symval + irel->r_addend); + if (value <= 0x7fff || value >= 0xffff8000u) { unsigned char code; @@ -1131,14 +1194,16 @@ elf32_h8_relax_section (abfd, sec, link_info, again) /* Get the opcode. */ code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - /* We just need to turn off bit 0x20. */ + /* 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_DIR16A8); + R_H8_DIR16); /* Delete two bytes of data. */ if (!elf32_h8_relax_delete_bytes (abfd, sec, @@ -1200,11 +1265,7 @@ elf32_h8_relax_section (abfd, sec, link_info, again) /* Delete some bytes from a section while relaxing. */ static bfd_boolean -elf32_h8_relax_delete_bytes (abfd, sec, addr, count) - bfd *abfd; - asection *sec; - bfd_vma addr; - int count; +elf32_h8_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count) { Elf_Internal_Shdr *symtab_hdr; unsigned int sec_shndx; @@ -1226,7 +1287,7 @@ elf32_h8_relax_delete_bytes (abfd, sec, addr, count) power larger than the number of bytes we are deleting. */ irelalign = NULL; - toaddr = sec->_cooked_size; + toaddr = sec->size; irel = elf_section_data (sec)->relocs; irelend = irel + sec->reloc_count; @@ -1234,7 +1295,7 @@ elf32_h8_relax_delete_bytes (abfd, sec, addr, count) /* Actually delete the bytes. */ memmove (contents + addr, contents + addr + count, (size_t) (toaddr - addr - count)); - sec->_cooked_size -= count; + sec->size -= count; /* Adjust all the relocs. */ for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) @@ -1281,10 +1342,7 @@ elf32_h8_relax_delete_bytes (abfd, sec, addr, count) /* Return TRUE if a symbol exists at the given address, else return FALSE. */ static bfd_boolean -elf32_h8_symbol_address_p (abfd, sec, addr) - bfd *abfd; - asection *sec; - bfd_vma addr; +elf32_h8_symbol_address_p (bfd *abfd, asection *sec, bfd_vma addr) { Elf_Internal_Shdr *symtab_hdr; unsigned int sec_shndx; @@ -1328,14 +1386,12 @@ elf32_h8_symbol_address_p (abfd, sec, addr) which uses elf32_h8_relocate_section. */ static bfd_byte * -elf32_h8_get_relocated_section_contents (output_bfd, link_info, link_order, - data, relocateable, symbols) - bfd *output_bfd; - struct bfd_link_info *link_info; - struct bfd_link_order *link_order; - bfd_byte *data; - bfd_boolean relocateable; - asymbol **symbols; +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; @@ -1346,17 +1402,17 @@ elf32_h8_get_relocated_section_contents (output_bfd, link_info, link_order, /* We only need to handle the case of relaxing, or of having a particular set of section contents, specially. */ - if (relocateable + 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, - relocateable, + relocatable, symbols); symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; memcpy (data, elf_section_data (input_section)->this_hdr.contents, - (size_t) input_section->_raw_size); + (size_t) input_section->size); if ((input_section->flags & SEC_RELOC) != 0 && input_section->reloc_count > 0) @@ -1365,7 +1421,7 @@ elf32_h8_get_relocated_section_contents (output_bfd, link_info, link_order, Elf_Internal_Sym *isym, *isymend; bfd_size_type amt; - internal_relocs = (_bfd_elf32_link_read_relocs + internal_relocs = (_bfd_elf_link_read_relocs (input_bfd, input_section, (PTR) NULL, (Elf_Internal_Rela *) NULL, FALSE)); if (internal_relocs == NULL) @@ -1433,6 +1489,42 @@ elf32_h8_get_relocated_section_contents (output_bfd, link_info, link_order, 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" @@ -1451,10 +1543,12 @@ elf32_h8_get_relocated_section_contents (output_bfd, link_info, link_order, 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 - elflink.h:bfd_elf32_size_dynamic_sections uses + 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 @@ -1462,6 +1556,7 @@ elf32_h8_get_relocated_section_contents (output_bfd, link_info, link_order, /* 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