| /* FR30-specific support for 32-bit ELF. |
| Copyright 1998, 1999, 2000, 2001, 2002 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "libbfd.h" |
| #include "elf-bfd.h" |
| #include "elf/fr30.h" |
| |
| /* Forward declarations. */ |
| static bfd_reloc_status_type fr30_elf_i20_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_reloc_status_type fr30_elf_i32_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static reloc_howto_type * fr30_reloc_type_lookup |
| PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); |
| static void fr30_info_to_howto_rela |
| PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); |
| static boolean fr30_elf_relocate_section |
| PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| static bfd_reloc_status_type fr30_final_link_relocate |
| PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, |
| Elf_Internal_Rela *, bfd_vma)); |
| static boolean fr30_elf_gc_sweep_hook |
| PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| const Elf_Internal_Rela *)); |
| static asection * fr30_elf_gc_mark_hook |
| PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
| struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
| static boolean fr30_elf_check_relocs |
| PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| const Elf_Internal_Rela *)); |
| |
| static reloc_howto_type fr30_elf_howto_table [] = |
| { |
| /* This reloc does nothing. */ |
| HOWTO (R_FR30_NONE, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_FR30_NONE", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* An 8 bit absolute relocation. */ |
| HOWTO (R_FR30_8, /* type */ |
| 0, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 8, /* bitsize */ |
| false, /* pc_relative */ |
| 4, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_FR30_8", /* name */ |
| true, /* partial_inplace */ |
| 0x0000, /* src_mask */ |
| 0x0ff0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A 20 bit absolute relocation. */ |
| HOWTO (R_FR30_20, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 20, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| fr30_elf_i20_reloc, /* special_function */ |
| "R_FR30_20", /* name */ |
| true, /* partial_inplace */ |
| 0x00000000, /* src_mask */ |
| 0x00f0ffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A 32 bit absolute relocation. */ |
| HOWTO (R_FR30_32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_FR30_32", /* name */ |
| true, /* partial_inplace */ |
| 0x00000000, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A 32 bit into 48 bits absolute relocation. */ |
| HOWTO (R_FR30_48, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| fr30_elf_i32_reloc, /* special_function */ |
| "R_FR30_48", /* name */ |
| true, /* partial_inplace */ |
| 0x00000000, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A 6 bit absolute relocation. */ |
| HOWTO (R_FR30_6_IN_4, /* type */ |
| 2, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 6, /* bitsize */ |
| false, /* pc_relative */ |
| 4, /* bitpos */ |
| complain_overflow_unsigned, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_FR30_6_IN_4", /* name */ |
| true, /* partial_inplace */ |
| 0x0000, /* src_mask */ |
| 0x00f0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* An 8 bit absolute relocation. */ |
| HOWTO (R_FR30_8_IN_8, /* type */ |
| 0, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 8, /* bitsize */ |
| false, /* pc_relative */ |
| 4, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc,/* special_function */ |
| "R_FR30_8_IN_8", /* name */ |
| true, /* partial_inplace */ |
| 0x0000, /* src_mask */ |
| 0x0ff0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A 9 bit absolute relocation. */ |
| HOWTO (R_FR30_9_IN_8, /* type */ |
| 1, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 9, /* bitsize */ |
| false, /* pc_relative */ |
| 4, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc,/* special_function */ |
| "R_FR30_9_IN_8", /* name */ |
| true, /* partial_inplace */ |
| 0x0000, /* src_mask */ |
| 0x0ff0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A 10 bit absolute relocation. */ |
| HOWTO (R_FR30_10_IN_8, /* type */ |
| 2, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 10, /* bitsize */ |
| false, /* pc_relative */ |
| 4, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc,/* special_function */ |
| "R_FR30_10_IN_8", /* name */ |
| true, /* partial_inplace */ |
| 0x0000, /* src_mask */ |
| 0x0ff0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A PC relative 9 bit relocation, right shifted by 1. */ |
| HOWTO (R_FR30_9_PCREL, /* type */ |
| 1, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 9, /* bitsize */ |
| true, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_FR30_9_PCREL", /* name */ |
| false, /* partial_inplace */ |
| 0x0000, /* src_mask */ |
| 0x00ff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A PC relative 12 bit relocation, right shifted by 1. */ |
| HOWTO (R_FR30_12_PCREL, /* type */ |
| 1, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 12, /* bitsize */ |
| true, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_FR30_12_PCREL", /* name */ |
| false, /* partial_inplace */ |
| 0x0000, /* src_mask */ |
| 0x07ff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| /* GNU extension to record C++ vtable hierarchy */ |
| HOWTO (R_FR30_GNU_VTINHERIT, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| NULL, /* special_function */ |
| "R_FR30_GNU_VTINHERIT", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* GNU extension to record C++ vtable member usage */ |
| HOWTO (R_FR30_GNU_VTENTRY, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| "R_FR30_GNU_VTENTRY", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| }; |
| |
| /* Utility to actually perform an R_FR30_20 reloc. */ |
| |
| static bfd_reloc_status_type |
| fr30_elf_i20_reloc (abfd, reloc_entry, symbol, data, |
| input_section, output_bfd, error_message) |
| bfd * abfd; |
| arelent * reloc_entry; |
| asymbol * symbol; |
| PTR data; |
| asection * input_section; |
| bfd * output_bfd; |
| char ** error_message ATTRIBUTE_UNUSED; |
| { |
| bfd_vma relocation; |
| unsigned long x; |
| |
| /* This part is from bfd_elf_generic_reloc. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && (! reloc_entry->howto->partial_inplace |
| || reloc_entry->addend == 0)) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| if (output_bfd != NULL) |
| /* FIXME: See bfd_perform_relocation. Is this right? */ |
| return bfd_reloc_ok; |
| |
| relocation = |
| symbol->value |
| + symbol->section->output_section->vma |
| + symbol->section->output_offset |
| + reloc_entry->addend; |
| |
| if (relocation > (((bfd_vma) 1 << 20) - 1)) |
| return bfd_reloc_overflow; |
| |
| x = bfd_get_32 (abfd, (char *) data + reloc_entry->address); |
| x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4); |
| bfd_put_32 (abfd, (bfd_vma) x, (char *) data + reloc_entry->address); |
| |
| return bfd_reloc_ok; |
| } |
| |
| /* Utility to actually perform a R_FR30_48 reloc. */ |
| |
| static bfd_reloc_status_type |
| fr30_elf_i32_reloc (abfd, reloc_entry, symbol, data, |
| input_section, output_bfd, error_message) |
| bfd * abfd; |
| arelent * reloc_entry; |
| asymbol * symbol; |
| PTR data; |
| asection * input_section; |
| bfd * output_bfd; |
| char ** error_message ATTRIBUTE_UNUSED; |
| { |
| bfd_vma relocation; |
| |
| /* This part is from bfd_elf_generic_reloc. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && (! reloc_entry->howto->partial_inplace |
| || reloc_entry->addend == 0)) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| if (output_bfd != NULL) |
| /* FIXME: See bfd_perform_relocation. Is this right? */ |
| return bfd_reloc_ok; |
| |
| relocation = |
| symbol->value |
| + symbol->section->output_section->vma |
| + symbol->section->output_offset |
| + reloc_entry->addend; |
| |
| bfd_put_32 (abfd, relocation, (char *) data + reloc_entry->address + 2); |
| |
| return bfd_reloc_ok; |
| } |
| |
| /* Map BFD reloc types to FR30 ELF reloc types. */ |
| |
| struct fr30_reloc_map |
| { |
| bfd_reloc_code_real_type bfd_reloc_val; |
| unsigned int fr30_reloc_val; |
| }; |
| |
| static const struct fr30_reloc_map fr30_reloc_map [] = |
| { |
| { BFD_RELOC_NONE, R_FR30_NONE }, |
| { BFD_RELOC_8, R_FR30_8 }, |
| { BFD_RELOC_FR30_20, R_FR30_20 }, |
| { BFD_RELOC_32, R_FR30_32 }, |
| { BFD_RELOC_FR30_48, R_FR30_48 }, |
| { BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 }, |
| { BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 }, |
| { BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 }, |
| { BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 }, |
| { BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL }, |
| { BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL }, |
| { BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT }, |
| { BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY }, |
| }; |
| |
| static reloc_howto_type * |
| fr30_reloc_type_lookup (abfd, code) |
| bfd * abfd ATTRIBUTE_UNUSED; |
| bfd_reloc_code_real_type code; |
| { |
| unsigned int i; |
| |
| for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]); |
| --i;) |
| if (fr30_reloc_map [i].bfd_reloc_val == code) |
| return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val]; |
| |
| return NULL; |
| } |
| |
| /* Set the howto pointer for an FR30 ELF reloc. */ |
| |
| static void |
| fr30_info_to_howto_rela (abfd, cache_ptr, dst) |
| bfd * abfd ATTRIBUTE_UNUSED; |
| arelent * cache_ptr; |
| Elf32_Internal_Rela * dst; |
| { |
| unsigned int r_type; |
| |
| r_type = ELF32_R_TYPE (dst->r_info); |
| BFD_ASSERT (r_type < (unsigned int) R_FR30_max); |
| cache_ptr->howto = & fr30_elf_howto_table [r_type]; |
| } |
| |
| /* Perform a single relocation. By default we use the standard BFD |
| routines, but a few relocs, we have to do them ourselves. */ |
| |
| static bfd_reloc_status_type |
| fr30_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation) |
| reloc_howto_type * howto; |
| bfd * input_bfd; |
| asection * input_section; |
| bfd_byte * contents; |
| Elf_Internal_Rela * rel; |
| bfd_vma relocation; |
| { |
| bfd_reloc_status_type r = bfd_reloc_ok; |
| bfd_vma x; |
| bfd_signed_vma srel; |
| |
| switch (howto->type) |
| { |
| case R_FR30_20: |
| contents += rel->r_offset; |
| relocation += rel->r_addend; |
| |
| if (relocation > ((1 << 20) - 1)) |
| return bfd_reloc_overflow; |
| |
| x = bfd_get_32 (input_bfd, contents); |
| x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4); |
| bfd_put_32 (input_bfd, x, contents); |
| break; |
| |
| case R_FR30_48: |
| contents += rel->r_offset + 2; |
| relocation += rel->r_addend; |
| bfd_put_32 (input_bfd, relocation, contents); |
| break; |
| |
| case R_FR30_9_PCREL: |
| contents += rel->r_offset + 1; |
| srel = (bfd_signed_vma) relocation; |
| srel += rel->r_addend; |
| srel -= rel->r_offset; |
| srel -= 2; /* Branch instructions add 2 to the PC... */ |
| srel -= (input_section->output_section->vma + |
| input_section->output_offset); |
| |
| if (srel & 1) |
| return bfd_reloc_outofrange; |
| if (srel > ((1 << 8) - 1) || (srel < - (1 << 8))) |
| return bfd_reloc_overflow; |
| |
| bfd_put_8 (input_bfd, srel >> 1, contents); |
| break; |
| |
| case R_FR30_12_PCREL: |
| contents += rel->r_offset; |
| srel = (bfd_signed_vma) relocation; |
| srel += rel->r_addend; |
| srel -= rel->r_offset; |
| srel -= 2; /* Branch instructions add 2 to the PC... */ |
| srel -= (input_section->output_section->vma + |
| input_section->output_offset); |
| |
| if (srel & 1) |
| return bfd_reloc_outofrange; |
| if (srel > ((1 << 11) - 1) || (srel < - (1 << 11))) |
| return bfd_reloc_overflow; |
| |
| x = bfd_get_16 (input_bfd, contents); |
| x = (x & 0xf800) | ((srel >> 1) & 0x7ff); |
| bfd_put_16 (input_bfd, x, contents); |
| break; |
| |
| default: |
| r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| contents, rel->r_offset, |
| relocation, rel->r_addend); |
| } |
| |
| return r; |
| } |
| |
| /* Relocate an FR30 ELF section. |
| |
| The RELOCATE_SECTION function is called by the new ELF backend linker |
| to handle the relocations for a section. |
| |
| The relocs are always passed as Rela structures; if the section |
| actually uses Rel structures, the r_addend field will always be |
| zero. |
| |
| This function is responsible for adjusting the section contents as |
| necessary, and (if using Rela relocs and generating a relocateable |
| output file) adjusting the reloc addend as necessary. |
| |
| This function does not have to worry about setting the reloc |
| address or the reloc symbol index. |
| |
| LOCAL_SYMS is a pointer to the swapped in local symbols. |
| |
| LOCAL_SECTIONS is an array giving the section in the input file |
| corresponding to the st_shndx field of each local symbol. |
| |
| The global hash table entry for the global symbols can be found |
| via elf_sym_hashes (input_bfd). |
| |
| When generating relocateable output, this function must handle |
| STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| going to be the section symbol corresponding to the output |
| section, which means that the addend must be adjusted |
| accordingly. */ |
| |
| static boolean |
| fr30_elf_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; |
| { |
| Elf_Internal_Shdr * symtab_hdr; |
| struct elf_link_hash_entry ** sym_hashes; |
| Elf_Internal_Rela * rel; |
| Elf_Internal_Rela * relend; |
| |
| if (info->relocateable) |
| return true; |
| |
| symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
| sym_hashes = elf_sym_hashes (input_bfd); |
| relend = relocs + input_section->reloc_count; |
| |
| for (rel = relocs; rel < relend; rel ++) |
| { |
| reloc_howto_type * howto; |
| unsigned long r_symndx; |
| Elf_Internal_Sym * sym; |
| asection * sec; |
| struct elf_link_hash_entry * h; |
| bfd_vma relocation; |
| bfd_reloc_status_type r; |
| const char * name = NULL; |
| int r_type; |
| |
| r_type = ELF32_R_TYPE (rel->r_info); |
| |
| if ( r_type == R_FR30_GNU_VTINHERIT |
| || r_type == R_FR30_GNU_VTENTRY) |
| continue; |
| |
| r_symndx = ELF32_R_SYM (rel->r_info); |
| |
| howto = fr30_elf_howto_table + 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); |
| |
| name = bfd_elf_string_from_elf_section |
| (input_bfd, symtab_hdr->sh_link, sym->st_name); |
| name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; |
| #if 0 |
| fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", |
| sec->name, name, sym->st_name, |
| sec->output_section->vma, sec->output_offset, |
| sym->st_value, rel->r_addend); |
| #endif |
| } |
| 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; |
| |
| name = h->root.root.string; |
| |
| 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); |
| #if 0 |
| fprintf (stderr, |
| "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n", |
| sec->name, name, h->root.u.def.value, |
| sec->output_section->vma, sec->output_offset, relocation); |
| #endif |
| } |
| else if (h->root.type == bfd_link_hash_undefweak) |
| { |
| #if 0 |
| fprintf (stderr, "undefined: sec: %s, name: %s\n", |
| sec->name, name); |
| #endif |
| relocation = 0; |
| } |
| else |
| { |
| if (! ((*info->callbacks->undefined_symbol) |
| (info, h->root.root.string, input_bfd, |
| input_section, rel->r_offset, true))) |
| return false; |
| #if 0 |
| fprintf (stderr, "unknown: name: %s\n", name); |
| #endif |
| relocation = 0; |
| } |
| } |
| |
| r = fr30_final_link_relocate (howto, input_bfd, input_section, |
| contents, rel, relocation); |
| |
| if (r != bfd_reloc_ok) |
| { |
| const char * msg = (const char *) NULL; |
| |
| switch (r) |
| { |
| case bfd_reloc_overflow: |
| r = info->callbacks->reloc_overflow |
| (info, name, howto->name, (bfd_vma) 0, |
| input_bfd, input_section, rel->r_offset); |
| break; |
| |
| case bfd_reloc_undefined: |
| r = info->callbacks->undefined_symbol |
| (info, name, input_bfd, input_section, rel->r_offset, |
| true); |
| break; |
| |
| case bfd_reloc_outofrange: |
| msg = _("internal error: out of range error"); |
| break; |
| |
| case bfd_reloc_notsupported: |
| msg = _("internal error: unsupported relocation error"); |
| break; |
| |
| case bfd_reloc_dangerous: |
| msg = _("internal error: dangerous relocation"); |
| break; |
| |
| default: |
| msg = _("internal error: unknown error"); |
| break; |
| } |
| |
| if (msg) |
| r = info->callbacks->warning |
| (info, msg, name, input_bfd, input_section, rel->r_offset); |
| |
| if (! r) |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Return the section that should be marked against GC for a given |
| relocation. */ |
| |
| static asection * |
| fr30_elf_gc_mark_hook (sec, info, rel, h, sym) |
| asection * sec; |
| struct bfd_link_info * info ATTRIBUTE_UNUSED; |
| Elf_Internal_Rela * rel; |
| struct elf_link_hash_entry * h; |
| Elf_Internal_Sym * sym; |
| { |
| if (h != NULL) |
| { |
| switch (ELF32_R_TYPE (rel->r_info)) |
| { |
| case R_FR30_GNU_VTINHERIT: |
| case R_FR30_GNU_VTENTRY: |
| break; |
| |
| default: |
| 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; |
| } |
| |
| /* Update the got entry reference counts for the section being removed. */ |
| |
| static boolean |
| fr30_elf_gc_sweep_hook (abfd, info, sec, relocs) |
| bfd * abfd ATTRIBUTE_UNUSED; |
| struct bfd_link_info * info ATTRIBUTE_UNUSED; |
| asection * sec ATTRIBUTE_UNUSED; |
| const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED; |
| { |
| return true; |
| } |
| |
| /* Look through the relocs for a section during the first phase. |
| Since we don't do .gots or .plts, we just need to consider the |
| virtual table relocs for gc. */ |
| |
| static boolean |
| fr30_elf_check_relocs (abfd, info, sec, relocs) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| asection *sec; |
| const Elf_Internal_Rela *relocs; |
| { |
| Elf_Internal_Shdr *symtab_hdr; |
| struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; |
| const Elf_Internal_Rela *rel; |
| const Elf_Internal_Rela *rel_end; |
| |
| if (info->relocateable) |
| return true; |
| |
| symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| sym_hashes = elf_sym_hashes (abfd); |
| sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); |
| if (!elf_bad_symtab (abfd)) |
| sym_hashes_end -= symtab_hdr->sh_info; |
| |
| rel_end = relocs + sec->reloc_count; |
| for (rel = relocs; rel < rel_end; rel++) |
| { |
| struct elf_link_hash_entry *h; |
| unsigned long r_symndx; |
| |
| r_symndx = ELF32_R_SYM (rel->r_info); |
| if (r_symndx < symtab_hdr->sh_info) |
| h = NULL; |
| else |
| h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| |
| switch (ELF32_R_TYPE (rel->r_info)) |
| { |
| /* This relocation describes the C++ object vtable hierarchy. |
| Reconstruct it for later use during GC. */ |
| case R_FR30_GNU_VTINHERIT: |
| if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| return false; |
| break; |
| |
| /* This relocation describes which C++ vtable entries are actually |
| used. Record for later use during GC. */ |
| case R_FR30_GNU_VTENTRY: |
| if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| return false; |
| break; |
| } |
| } |
| |
| return true; |
| } |
| |
| #define ELF_ARCH bfd_arch_fr30 |
| #define ELF_MACHINE_CODE EM_FR30 |
| #define ELF_MACHINE_ALT1 EM_CYGNUS_FR30 |
| #define ELF_MAXPAGESIZE 0x1000 |
| |
| #define TARGET_BIG_SYM bfd_elf32_fr30_vec |
| #define TARGET_BIG_NAME "elf32-fr30" |
| |
| #define elf_info_to_howto_rel NULL |
| #define elf_info_to_howto fr30_info_to_howto_rela |
| #define elf_backend_relocate_section fr30_elf_relocate_section |
| #define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook |
| #define elf_backend_gc_sweep_hook fr30_elf_gc_sweep_hook |
| #define elf_backend_check_relocs fr30_elf_check_relocs |
| |
| #define elf_backend_can_gc_sections 1 |
| #define elf_backend_rela_normal 1 |
| |
| #define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup |
| |
| #include "elf32-target.h" |