| /* Intel i860 specific support for 32-bit ELF. |
| Copyright 1993, 1995, 1999, 2000, 2001 Free Software Foundation, Inc. |
| |
| Full i860 support contributed by Jason Eckhardt <jle@cygnus.com>. |
| |
| 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/i860.h" |
| |
| /* Prototypes. */ |
| static reloc_howto_type *lookup_howto |
| PARAMS ((unsigned int)); |
| |
| static reloc_howto_type *elf32_i860_reloc_type_lookup |
| PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); |
| |
| static void elf32_i860_info_to_howto_rela |
| PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); |
| |
| static bfd_reloc_status_type elf32_i860_relocate_splitn |
| PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| |
| static bfd_reloc_status_type elf32_i860_relocate_pc16 |
| PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| |
| static bfd_reloc_status_type elf32_i860_relocate_pc26 |
| PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| |
| static bfd_reloc_status_type elf32_i860_relocate_highadj |
| PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| |
| static boolean elf32_i860_relocate_section |
| PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| |
| static bfd_reloc_status_type i860_final_link_relocate |
| PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, |
| Elf_Internal_Rela *, bfd_vma)); |
| |
| static boolean elf32_i860_is_local_label_name |
| PARAMS ((bfd *, const char *)); |
| |
| /* This howto table is preliminary. */ |
| static reloc_howto_type elf32_i860_howto_table [] = |
| { |
| /* This relocation does nothing. */ |
| HOWTO (R_860_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_860_NONE", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A 32-bit absolute relocation. */ |
| HOWTO (R_860_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_860_32", /* name */ |
| false, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_COPY, /* 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_860_COPY", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_GLOB_DAT, /* 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_860_GLOB_DAT", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_JUMP_SLOT, /* 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_860_JUMP_SLOT", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_RELATIVE, /* 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_860_RELATIVE", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| /* A 26-bit PC-relative relocation. */ |
| HOWTO (R_860_PC26, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 26, /* bitsize */ |
| true, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_PC26", /* name */ |
| false, /* partial_inplace */ |
| 0x3ffffff, /* src_mask */ |
| 0x3ffffff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| HOWTO (R_860_PLT26, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 26, /* bitsize */ |
| true, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_PLT26", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| /* A 16-bit PC-relative relocation. */ |
| HOWTO (R_860_PC16, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| true, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_PC16", /* name */ |
| false, /* partial_inplace */ |
| 0x1f07ff, /* src_mask */ |
| 0x1f07ff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOW0, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOW0", /* name */ |
| false, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_SPLIT0, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_SPLIT0", /* name */ |
| false, /* partial_inplace */ |
| 0x1f07ff, /* src_mask */ |
| 0x1f07ff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOW1, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOW1", /* name */ |
| false, /* partial_inplace */ |
| 0xfffe, /* src_mask */ |
| 0xfffe, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_SPLIT1, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_SPLIT1", /* name */ |
| false, /* partial_inplace */ |
| 0x1f07fe, /* src_mask */ |
| 0x1f07fe, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOW2, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOW2", /* name */ |
| false, /* partial_inplace */ |
| 0xfffc, /* src_mask */ |
| 0xfffc, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_SPLIT2, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_SPLIT2", /* name */ |
| false, /* partial_inplace */ |
| 0x1f07fc, /* src_mask */ |
| 0x1f07fc, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOW3, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOW3", /* name */ |
| false, /* partial_inplace */ |
| 0xfff8, /* src_mask */ |
| 0xfff8, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOGOT0, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOGOT0", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| HOWTO (R_860_SPGOT0, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_SPGOT0", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOGOT1, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOGOT1", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| HOWTO (R_860_SPGOT1, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_SPGOT1", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOGOTOFF0, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOGOTOFF0", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_SPGOTOFF0, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_SPGOTOFF0", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOGOTOFF1, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOGOTOFF1", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_SPGOTOFF1, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_SPGOTOFF1", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOGOTOFF2, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOGOTOFF2", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOGOTOFF3, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOGOTOFF3", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_LOPC, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| true, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_LOPC", /* name */ |
| false, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| HOWTO (R_860_HIGHADJ, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_HIGHADJ", /* name */ |
| false, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_HAGOT, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_HAGOT", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| HOWTO (R_860_HAGOTOFF, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_HAGOTOFF", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_HAPC, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| true, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_HAPC", /* name */ |
| false, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| HOWTO (R_860_HIGH, /* type */ |
| 16, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_HIGH", /* name */ |
| false, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| |
| HOWTO (R_860_HIGOT, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_HIGOT", /* name */ |
| false, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| true), /* pcrel_offset */ |
| |
| HOWTO (R_860_HIGOTOFF, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| false, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_860_HIGOTOFF", /* name */ |
| true, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| false), /* pcrel_offset */ |
| }; |
| |
| static unsigned char elf_code_to_howto_index[R_860_max + 1]; |
| |
| static reloc_howto_type * |
| lookup_howto (rtype) |
| unsigned int rtype; |
| { |
| static int initialized = 0; |
| int i; |
| int howto_tbl_size = (int) (sizeof (elf32_i860_howto_table) |
| / sizeof (elf32_i860_howto_table[0])); |
| |
| if (! initialized) |
| { |
| initialized = 1; |
| memset (elf_code_to_howto_index, 0xff, |
| sizeof (elf_code_to_howto_index)); |
| for (i = 0; i < howto_tbl_size; i++) |
| elf_code_to_howto_index[elf32_i860_howto_table[i].type] = i; |
| } |
| |
| BFD_ASSERT (rtype <= R_860_max); |
| i = elf_code_to_howto_index[rtype]; |
| if (i >= howto_tbl_size) |
| return 0; |
| return elf32_i860_howto_table + i; |
| } |
| |
| /* Given a BFD reloc, return the matching HOWTO structure. */ |
| static reloc_howto_type * |
| elf32_i860_reloc_type_lookup (abfd, code) |
| bfd * abfd ATTRIBUTE_UNUSED; |
| bfd_reloc_code_real_type code; |
| { |
| unsigned int rtype; |
| |
| switch (code) |
| { |
| case BFD_RELOC_NONE: |
| rtype = R_860_NONE; |
| break; |
| case BFD_RELOC_32: |
| rtype = R_860_32; |
| break; |
| case BFD_RELOC_860_COPY: |
| rtype = R_860_COPY; |
| break; |
| case BFD_RELOC_860_GLOB_DAT: |
| rtype = R_860_GLOB_DAT; |
| break; |
| case BFD_RELOC_860_JUMP_SLOT: |
| rtype = R_860_JUMP_SLOT; |
| break; |
| case BFD_RELOC_860_RELATIVE: |
| rtype = R_860_RELATIVE; |
| break; |
| case BFD_RELOC_860_PC26: |
| rtype = R_860_PC26; |
| break; |
| case BFD_RELOC_860_PLT26: |
| rtype = R_860_PLT26; |
| break; |
| case BFD_RELOC_860_PC16: |
| rtype = R_860_PC16; |
| break; |
| case BFD_RELOC_860_LOW0: |
| rtype = R_860_LOW0; |
| break; |
| case BFD_RELOC_860_SPLIT0: |
| rtype = R_860_SPLIT0; |
| break; |
| case BFD_RELOC_860_LOW1: |
| rtype = R_860_LOW1; |
| break; |
| case BFD_RELOC_860_SPLIT1: |
| rtype = R_860_SPLIT1; |
| break; |
| case BFD_RELOC_860_LOW2: |
| rtype = R_860_LOW2; |
| break; |
| case BFD_RELOC_860_SPLIT2: |
| rtype = R_860_SPLIT2; |
| break; |
| case BFD_RELOC_860_LOW3: |
| rtype = R_860_LOW3; |
| break; |
| case BFD_RELOC_860_LOGOT0: |
| rtype = R_860_LOGOT0; |
| break; |
| case BFD_RELOC_860_SPGOT0: |
| rtype = R_860_SPGOT0; |
| break; |
| case BFD_RELOC_860_LOGOT1: |
| rtype = R_860_LOGOT1; |
| break; |
| case BFD_RELOC_860_SPGOT1: |
| rtype = R_860_SPGOT1; |
| break; |
| case BFD_RELOC_860_LOGOTOFF0: |
| rtype = R_860_LOGOTOFF0; |
| break; |
| case BFD_RELOC_860_SPGOTOFF0: |
| rtype = R_860_SPGOTOFF0; |
| break; |
| case BFD_RELOC_860_LOGOTOFF1: |
| rtype = R_860_LOGOTOFF1; |
| break; |
| case BFD_RELOC_860_SPGOTOFF1: |
| rtype = R_860_SPGOTOFF1; |
| break; |
| case BFD_RELOC_860_LOGOTOFF2: |
| rtype = R_860_LOGOTOFF2; |
| break; |
| case BFD_RELOC_860_LOGOTOFF3: |
| rtype = R_860_LOGOTOFF3; |
| break; |
| case BFD_RELOC_860_LOPC: |
| rtype = R_860_LOPC; |
| break; |
| case BFD_RELOC_860_HIGHADJ: |
| rtype = R_860_HIGHADJ; |
| break; |
| case BFD_RELOC_860_HAGOT: |
| rtype = R_860_HAGOT; |
| break; |
| case BFD_RELOC_860_HAGOTOFF: |
| rtype = R_860_HAGOTOFF; |
| break; |
| case BFD_RELOC_860_HAPC: |
| rtype = R_860_HAPC; |
| break; |
| case BFD_RELOC_860_HIGH: |
| rtype = R_860_HIGH; |
| break; |
| case BFD_RELOC_860_HIGOT: |
| rtype = R_860_HIGOT; |
| break; |
| case BFD_RELOC_860_HIGOTOFF: |
| rtype = R_860_HIGOTOFF; |
| break; |
| default: |
| rtype = 0; |
| break; |
| } |
| return lookup_howto (rtype); |
| } |
| |
| /* Given a ELF reloc, return the matching HOWTO structure. */ |
| static void |
| elf32_i860_info_to_howto_rela (abfd, bfd_reloc, elf_reloc) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| arelent *bfd_reloc; |
| Elf64_Internal_Rela *elf_reloc; |
| { |
| bfd_reloc->howto |
| = lookup_howto ((unsigned) ELF32_R_TYPE (elf_reloc->r_info)); |
| } |
| |
| /* Specialized relocation handler for R_860_SPLITn. These relocations |
| involves a 16-bit field that is split into two contiguous parts. */ |
| static bfd_reloc_status_type |
| elf32_i860_relocate_splitn (input_bfd, rello, contents, value) |
| bfd *input_bfd; |
| Elf_Internal_Rela *rello; |
| bfd_byte *contents; |
| bfd_vma value; |
| { |
| bfd_vma insn; |
| reloc_howto_type *howto; |
| howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info)); |
| insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| |
| /* Relocate. */ |
| value += rello->r_addend; |
| |
| /* Separate the fields and insert. */ |
| value = (((value & 0xf8) << 5) | (value & 0x7ff)) & howto->dst_mask; |
| insn = (insn & ~howto->dst_mask) | value; |
| |
| bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| return bfd_reloc_ok; |
| } |
| |
| /* Specialized relocation handler for R_860_PC16. This relocation |
| involves a 16-bit, PC-relative field that is split into two contiguous |
| parts. */ |
| static bfd_reloc_status_type |
| elf32_i860_relocate_pc16 (input_bfd, input_section, rello, contents, value) |
| bfd *input_bfd; |
| asection *input_section; |
| Elf_Internal_Rela *rello; |
| bfd_byte *contents; |
| bfd_vma value; |
| { |
| bfd_vma insn; |
| reloc_howto_type *howto; |
| howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info)); |
| insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| |
| /* Adjust for PC-relative relocation. */ |
| value -= (input_section->output_section->vma |
| + input_section->output_offset); |
| value -= rello->r_offset; |
| |
| /* Relocate. */ |
| value += rello->r_addend; |
| |
| /* Separate the fields and insert. */ |
| value = (((value & 0xf8) << 5) | (value & 0x7ff)) & howto->dst_mask; |
| insn = (insn & ~howto->dst_mask) | value; |
| |
| bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| return bfd_reloc_ok; |
| |
| } |
| |
| /* Specialized relocation handler for R_860_PC26. This relocation |
| involves a 26-bit, PC-relative field which must be adjusted by 4. */ |
| static bfd_reloc_status_type |
| elf32_i860_relocate_pc26 (input_bfd, input_section, rello, contents, value) |
| bfd *input_bfd; |
| asection *input_section; |
| Elf_Internal_Rela *rello; |
| bfd_byte *contents; |
| bfd_vma value; |
| { |
| bfd_vma insn; |
| reloc_howto_type *howto; |
| howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info)); |
| insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| |
| /* Adjust for PC-relative relocation. */ |
| value -= (input_section->output_section->vma |
| + input_section->output_offset); |
| value -= rello->r_offset; |
| |
| /* Relocate. */ |
| value += rello->r_addend; |
| |
| /* Adjust value by 4 and insert the field. */ |
| value = ((value - 4) >> howto->rightshift) & howto->dst_mask; |
| insn = (insn & ~howto->dst_mask) | value; |
| |
| bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| return bfd_reloc_ok; |
| |
| } |
| |
| /* Specialized relocation handler for R_860_HIGHADJ. */ |
| static bfd_reloc_status_type |
| elf32_i860_relocate_highadj (input_bfd, rel, contents, value) |
| bfd *input_bfd; |
| Elf_Internal_Rela *rel; |
| bfd_byte *contents; |
| bfd_vma value; |
| { |
| bfd_vma insn; |
| |
| insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| |
| value += ((rel->r_addend & 0x8000) << 1); |
| value += rel->r_addend; |
| value = ((value >> 16) & 0xffff); |
| |
| insn = (insn & 0xffff0000) | value; |
| |
| bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| return bfd_reloc_ok; |
| } |
| |
| /* Perform a single relocation. By default we use the standard BFD |
| routines. However, we handle some specially. */ |
| static bfd_reloc_status_type |
| i860_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; |
| { |
| return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| contents, rel->r_offset, relocation, |
| rel->r_addend); |
| } |
| |
| /* Relocate an i860 ELF section. |
| |
| This is boiler-plate code copied from fr30. |
| There is some attempt to make this function usable for many architectures, |
| both USE_REL and USE_RELA ['twould be nice if such a critter existed], |
| if only to serve as a learning tool. |
| |
| 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 |
| elf32_i860_relocate_section (output_bfd, info, input_bfd, input_section, |
| contents, relocs, local_syms, local_sections) |
| bfd * output_bfd ATTRIBUTE_UNUSED; |
| 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; |
| |
| 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 0 |
| if ( r_type == R_860_GNU_VTINHERIT |
| || r_type == R_860_GNU_VTENTRY) |
| continue; |
| #endif |
| |
| r_symndx = ELF32_R_SYM (rel->r_info); |
| |
| if (info->relocateable) |
| { |
| /* This is a relocateable link. We don't have to change |
| anything, unless the reloc is against a section symbol, |
| in which case we have to adjust according to where the |
| section symbol winds up in the output section. */ |
| if (r_symndx < symtab_hdr->sh_info) |
| { |
| sym = local_syms + r_symndx; |
| |
| if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| { |
| sec = local_sections [r_symndx]; |
| rel->r_addend += sec->output_offset + sym->st_value; |
| } |
| } |
| |
| continue; |
| } |
| |
| /* This is a final link. */ |
| howto = lookup_howto ((unsigned) 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; |
| } |
| 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); |
| } |
| 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; |
| } |
| } |
| |
| switch (r_type) |
| { |
| default: |
| r = i860_final_link_relocate (howto, input_bfd, input_section, |
| contents, rel, relocation); |
| break; |
| |
| case R_860_HIGHADJ: |
| r = elf32_i860_relocate_highadj (input_bfd, rel, contents, |
| relocation); |
| break; |
| |
| case R_860_PC16: |
| r = elf32_i860_relocate_pc16 (input_bfd, input_section, rel, |
| contents, relocation); |
| break; |
| |
| case R_860_PC26: |
| r = elf32_i860_relocate_pc26 (input_bfd, input_section, rel, |
| contents, relocation); |
| break; |
| |
| case R_860_SPLIT0: |
| case R_860_SPLIT1: |
| case R_860_SPLIT2: |
| r = elf32_i860_relocate_splitn (input_bfd, rel, contents, |
| relocation); |
| break; |
| |
| /* We do not yet handle GOT/PLT/Dynamic relocations. */ |
| case R_860_COPY: |
| case R_860_GLOB_DAT: |
| case R_860_JUMP_SLOT: |
| case R_860_RELATIVE: |
| case R_860_PLT26: |
| case R_860_LOGOT0: |
| case R_860_SPGOT0: |
| case R_860_LOGOT1: |
| case R_860_SPGOT1: |
| case R_860_LOGOTOFF0: |
| case R_860_SPGOTOFF0: |
| case R_860_LOGOTOFF1: |
| case R_860_SPGOTOFF1: |
| case R_860_LOGOTOFF2: |
| case R_860_LOGOTOFF3: |
| case R_860_LOPC: |
| case R_860_HAGOT: |
| case R_860_HAGOTOFF: |
| case R_860_HAPC: |
| case R_860_HIGOT: |
| case R_860_HIGOTOFF: |
| r = bfd_reloc_notsupported; |
| break; |
| } |
| |
| 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 whether a symbol name implies a local label. SVR4/860 compilers |
| generate labels of the form ".ep.function_name" to denote the end of a |
| function prolog. These should be local. |
| ??? Do any other SVR4 compilers have this convention? If so, this should |
| be added to the generic routine. */ |
| static boolean |
| elf32_i860_is_local_label_name (abfd, name) |
| bfd *abfd; |
| const char *name; |
| { |
| if (name[0] == '.' && name[1] == 'e' && name[2] == 'p' && name[3] == '.') |
| return true; |
| |
| return _bfd_elf_is_local_label_name (abfd, name); |
| } |
| |
| #define TARGET_BIG_SYM bfd_elf32_i860_vec |
| #define TARGET_BIG_NAME "elf32-i860" |
| #define TARGET_LITTLE_SYM bfd_elf32_i860_little_vec |
| #define TARGET_LITTLE_NAME "elf32-i860-little" |
| #define ELF_ARCH bfd_arch_i860 |
| #define ELF_MACHINE_CODE EM_860 |
| #define ELF_MAXPAGESIZE 4096 |
| |
| #define elf_info_to_howto_rel NULL |
| #define elf_info_to_howto elf32_i860_info_to_howto_rela |
| #define elf_backend_relocate_section elf32_i860_relocate_section |
| #define bfd_elf32_bfd_reloc_type_lookup elf32_i860_reloc_type_lookup |
| #define bfd_elf32_bfd_is_local_label_name elf32_i860_is_local_label_name |
| |
| #include "elf32-target.h" |