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1181 |
sfurman |
/* DLX specific support for 32-bit ELF
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Copyright 2002 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/dlx.h"
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int set_dlx_skip_hi16_flag PARAMS ((int));
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static boolean elf32_dlx_check_relocs
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PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *));
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static void elf32_dlx_info_to_howto
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
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static void elf32_dlx_info_to_howto_rel
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
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static bfd_reloc_status_type elf32_dlx_relocate16
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type elf32_dlx_relocate26
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static reloc_howto_type *elf32_dlx_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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static bfd_reloc_status_type _bfd_dlx_elf_hi16_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static reloc_howto_type * dlx_rtype_to_howto
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PARAMS ((unsigned int));
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#define USE_REL 1
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#define bfd_elf32_bfd_reloc_type_lookup elf32_dlx_reloc_type_lookup
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#define elf_info_to_howto elf32_dlx_info_to_howto
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#define elf_info_to_howto_rel elf32_dlx_info_to_howto_rel
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#define elf_backend_check_relocs elf32_dlx_check_relocs
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static reloc_howto_type dlx_elf_howto_table[]=
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{
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/* No relocation. */
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HOWTO (R_DLX_NONE, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_DLX_NONE", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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false), /* pcrel_offset */
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/* 8 bit relocation. */
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HOWTO (R_DLX_RELOC_8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_DLX_RELOC_8", /* name */
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true, /* partial_inplace */
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0xff, /* src_mask */
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0xff, /* dst_mask */
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false), /* pcrel_offset */
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/* 16 bit relocation. */
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HOWTO (R_DLX_RELOC_16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_DLX_RELOC_16", /* name */
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true, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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#if 0
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/* 26 bit jump address. */
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HOWTO (R_DLX_RELOC_26, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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/* This needs complex overflow detection, because the upper four
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bits must match the PC + 4. */
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bfd_elf_generic_reloc, /* special_function */
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"R_DLX_RELOC_26", /* name */
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true, /* partial_inplace */
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0x3ffffff, /* src_mask */
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0x3ffffff, /* dst_mask */
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false), /* pcrel_offset */
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#endif
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/* 32 bit relocation. */
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HOWTO (R_DLX_RELOC_32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_DLX_RELOC_32", /* name */
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true, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* GNU extension to record C++ vtable hierarchy */
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HOWTO (R_DLX_GNU_VTINHERIT, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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NULL, /* special_function */
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"R_DLX_GNU_VTINHERIT", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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false), /* pcrel_offset */
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/* GNU extension to record C++ vtable member usage */
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HOWTO (R_DLX_GNU_VTENTRY, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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_bfd_elf_rel_vtable_reloc_fn,/* special_function */
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"R_DLX_GNU_VTENTRY", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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false) /* pcrel_offset */
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};
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/* 16 bit offset for pc-relative branches. */
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static reloc_howto_type elf_dlx_gnu_rel16_s2 =
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HOWTO (R_DLX_RELOC_16_PCREL, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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elf32_dlx_relocate16, /* special_function */
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"R_DLX_RELOC_16_PCREL",/* name */
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true, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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true); /* pcrel_offset */
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/* 26 bit offset for pc-relative branches. */
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static reloc_howto_type elf_dlx_gnu_rel26_s2 =
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HOWTO (R_DLX_RELOC_26_PCREL, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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elf32_dlx_relocate26, /* special_function */
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"R_DLX_RELOC_26_PCREL",/* name */
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true, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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true); /* pcrel_offset */
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/* High 16 bits of symbol value. */
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static reloc_howto_type elf_dlx_reloc_16_hi =
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HOWTO (R_DLX_RELOC_16_HI, /* type */
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16, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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_bfd_dlx_elf_hi16_reloc,/* special_function */
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"R_DLX_RELOC_16_HI", /* name */
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true, /* partial_inplace */
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0xFFFF, /* src_mask */
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0xffff, /* dst_mask */
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false); /* pcrel_offset */
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/* Low 16 bits of symbol value. */
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static reloc_howto_type elf_dlx_reloc_16_lo =
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HOWTO (R_DLX_RELOC_16_LO, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_DLX_RELOC_16_LO", /* name */
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true, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false); /* pcrel_offset */
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/* The gas default beheaver is not to preform the %hi modifier so that the
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GNU assembler can have the lower 16 bits offset placed in the insn, BUT
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we do like the gas to indicate it is %hi reloc type so when we in the link
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loader phase we can have the corrected hi16 vale replace the buggous lo16
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value that was placed there by gas. */
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static int skip_dlx_elf_hi16_reloc = 0;
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int
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set_dlx_skip_hi16_flag (flag)
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int flag;
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{
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skip_dlx_elf_hi16_reloc = flag;
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return flag;
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}
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static bfd_reloc_status_type
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_bfd_dlx_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
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input_section, output_bfd, error_message)
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bfd *abfd;
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arelent *reloc_entry;
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asymbol *symbol;
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PTR data;
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asection *input_section;
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bfd *output_bfd;
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char **error_message;
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{
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bfd_reloc_status_type ret;
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bfd_vma relocation;
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/* If the skip flag is set then we simply do the generic relocating, this
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is more of a hack for dlx gas/gld, so we do not need to do the %hi/%lo
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fixup like mips gld did. */
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#if 0
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printf ("DEBUG: skip_dlx_elf_hi16_reloc = 0x%08x\n", skip_dlx_elf_hi16_reloc);
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#endif
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if (skip_dlx_elf_hi16_reloc)
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return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
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input_section, output_bfd, error_message);
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/* If we're relocating, and this an external symbol, we don't want
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to change anything. */
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if (output_bfd != (bfd *) NULL
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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&& reloc_entry->addend == 0)
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{
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reloc_entry->address += input_section->output_offset;
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return bfd_reloc_ok;
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}
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ret = bfd_reloc_ok;
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if (bfd_is_und_section (symbol->section)
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&& output_bfd == (bfd *) NULL)
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ret = bfd_reloc_undefined;
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#if 0
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{
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unsigned long vallo, val;
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vallo = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
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printf ("DEBUG: The relocation address = 0x%08x\n", reloc_entry->address);
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printf ("DEBUG: The symbol = 0x%08x\n", vallo);
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printf ("DEBUG: The symbol name = %s\n", bfd_asymbol_name (symbol));
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printf ("DEBUG: The symbol->value = 0x%08x\n", symbol->value);
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printf ("DEBUG: The vma = 0x%08x\n", symbol->section->output_section->vma);
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printf ("DEBUG: The output_offset = 0x%08x\n", symbol->section->output_offset);
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printf ("DEBUG: The input_offset = 0x%08x\n", input_section->output_offset);
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printf ("DEBUG: The input_vma = 0x%08x\n", input_section->vma);
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printf ("DEBUG: The addend = 0x%08x\n", reloc_entry->addend);
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}
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#endif
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relocation = (bfd_is_com_section (symbol->section)) ? 0 : symbol->value;
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relocation += symbol->section->output_section->vma;
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relocation += symbol->section->output_offset;
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relocation += reloc_entry->addend;
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relocation += bfd_get_16 (abfd, (bfd_byte *)data + reloc_entry->address);
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if (reloc_entry->address > input_section->_cooked_size)
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return bfd_reloc_outofrange;
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#if 0
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printf ("DEBUG: The finial relocation value = 0x%08x\n", relocation);
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#endif
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315 |
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bfd_put_16 (abfd, (short)((relocation >> 16) & 0xFFFF),
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(bfd_byte *)data + reloc_entry->address);
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return ret;
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}
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321 |
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/* ELF relocs are against symbols. If we are producing relocateable
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output, and the reloc is against an external symbol, and nothing
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324 |
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has given us any additional addend, the resulting reloc will also
|
325 |
|
|
be against the same symbol. In such a case, we don't want to
|
326 |
|
|
change anything about the way the reloc is handled, since it will
|
327 |
|
|
all be done at final link time. Rather than put special case code
|
328 |
|
|
into bfd_perform_relocation, all the reloc types use this howto
|
329 |
|
|
function. It just short circuits the reloc if producing
|
330 |
|
|
relocateable output against an external symbol. */
|
331 |
|
|
|
332 |
|
|
static bfd_reloc_status_type
|
333 |
|
|
elf32_dlx_relocate16 (abfd, reloc_entry, symbol, data,
|
334 |
|
|
input_section, output_bfd, error_message)
|
335 |
|
|
bfd *abfd;
|
336 |
|
|
arelent *reloc_entry;
|
337 |
|
|
asymbol *symbol;
|
338 |
|
|
PTR data;
|
339 |
|
|
asection *input_section;
|
340 |
|
|
bfd *output_bfd;
|
341 |
|
|
char **error_message ATTRIBUTE_UNUSED;
|
342 |
|
|
{
|
343 |
|
|
unsigned long insn, vallo, allignment;
|
344 |
|
|
int val;
|
345 |
|
|
|
346 |
|
|
/* HACK: I think this first condition is necessary when producing
|
347 |
|
|
relocatable output. After the end of HACK, the code is identical
|
348 |
|
|
to bfd_elf_generic_reloc(). I would _guess_ the first change
|
349 |
|
|
belongs there rather than here. martindo 1998-10-23. */
|
350 |
|
|
|
351 |
|
|
if (skip_dlx_elf_hi16_reloc)
|
352 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
353 |
|
|
input_section, output_bfd, error_message);
|
354 |
|
|
|
355 |
|
|
/* Check undefined section and undefined symbols */
|
356 |
|
|
if (bfd_is_und_section (symbol->section)
|
357 |
|
|
&& output_bfd == (bfd *) NULL)
|
358 |
|
|
return bfd_reloc_undefined;
|
359 |
|
|
|
360 |
|
|
/* Can not support a long jump to sections other then .text */
|
361 |
|
|
if (strcmp (input_section->name, symbol->section->output_section->name) != 0)
|
362 |
|
|
{
|
363 |
|
|
fprintf (stderr,
|
364 |
|
|
"BFD Link Error: branch (PC rel16) to section (%s) not supported\n",
|
365 |
|
|
symbol->section->output_section->name);
|
366 |
|
|
return bfd_reloc_undefined;
|
367 |
|
|
}
|
368 |
|
|
|
369 |
|
|
insn = bfd_get_32 (abfd, (bfd_byte *)data + reloc_entry->address);
|
370 |
|
|
allignment = 1 << (input_section->output_section->alignment_power - 1);
|
371 |
|
|
vallo = insn & 0x0000FFFF;
|
372 |
|
|
|
373 |
|
|
if (vallo & 0x8000)
|
374 |
|
|
vallo = ~(vallo | 0xFFFF0000) + 1;
|
375 |
|
|
|
376 |
|
|
/* vallo points to the vma of next instruction. */
|
377 |
|
|
vallo += (((unsigned long)(input_section->output_section->vma +
|
378 |
|
|
input_section->output_offset) +
|
379 |
|
|
allignment) & ~allignment);
|
380 |
|
|
|
381 |
|
|
/* val is the displacement (PC relative to next instruction). */
|
382 |
|
|
val = (symbol->section->output_offset +
|
383 |
|
|
symbol->section->output_section->vma +
|
384 |
|
|
symbol->value) - vallo;
|
385 |
|
|
#if 0
|
386 |
|
|
printf ("DEBUG elf32_dlx_relocate: We are here\n");
|
387 |
|
|
printf ("DEBUG: The insn = 0x%08x\n", insn);
|
388 |
|
|
printf ("DEBUG: The vallo = 0x%08x\n", vallo);
|
389 |
|
|
printf ("DEBUG: The val = 0x%08x\n", val);
|
390 |
|
|
printf ("DEBUG: The symbol name = %s\n", bfd_asymbol_name (symbol));
|
391 |
|
|
printf ("DEBUG: The symbol->value = 0x%08x\n", symbol->value);
|
392 |
|
|
printf ("DEBUG: The vma = 0x%08x\n", symbol->section->output_section->vma);
|
393 |
|
|
printf ("DEBUG: The lma = 0x%08x\n", symbol->section->output_section->lma);
|
394 |
|
|
printf ("DEBUG: The alignment_power = 0x%08x\n", symbol->section->output_section->alignment_power);
|
395 |
|
|
printf ("DEBUG: The output_offset = 0x%08x\n", symbol->section->output_offset);
|
396 |
|
|
printf ("DEBUG: The addend = 0x%08x\n", reloc_entry->addend);
|
397 |
|
|
#endif
|
398 |
|
|
|
399 |
|
|
if (abs ((int) val) > 0x00007FFF)
|
400 |
|
|
return bfd_reloc_outofrange;
|
401 |
|
|
|
402 |
|
|
insn = (insn & 0xFFFF0000) | (val & 0x0000FFFF);
|
403 |
|
|
|
404 |
|
|
bfd_put_32 (abfd, insn,
|
405 |
|
|
(bfd_byte *) data + reloc_entry->address);
|
406 |
|
|
|
407 |
|
|
return bfd_reloc_ok;
|
408 |
|
|
}
|
409 |
|
|
|
410 |
|
|
static bfd_reloc_status_type
|
411 |
|
|
elf32_dlx_relocate26 (abfd, reloc_entry, symbol, data,
|
412 |
|
|
input_section, output_bfd, error_message)
|
413 |
|
|
bfd *abfd;
|
414 |
|
|
arelent *reloc_entry;
|
415 |
|
|
asymbol *symbol;
|
416 |
|
|
PTR data;
|
417 |
|
|
asection *input_section;
|
418 |
|
|
bfd *output_bfd;
|
419 |
|
|
char **error_message ATTRIBUTE_UNUSED;
|
420 |
|
|
{
|
421 |
|
|
unsigned long insn, vallo, allignment;
|
422 |
|
|
int val;
|
423 |
|
|
|
424 |
|
|
/* HACK: I think this first condition is necessary when producing
|
425 |
|
|
relocatable output. After the end of HACK, the code is identical
|
426 |
|
|
to bfd_elf_generic_reloc(). I would _guess_ the first change
|
427 |
|
|
belongs there rather than here. martindo 1998-10-23. */
|
428 |
|
|
|
429 |
|
|
if (skip_dlx_elf_hi16_reloc)
|
430 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
431 |
|
|
input_section, output_bfd, error_message);
|
432 |
|
|
|
433 |
|
|
/* Check undefined section and undefined symbols. */
|
434 |
|
|
if (bfd_is_und_section (symbol->section)
|
435 |
|
|
&& output_bfd == (bfd *) NULL)
|
436 |
|
|
return bfd_reloc_undefined;
|
437 |
|
|
|
438 |
|
|
/* Can not support a long jump to sections other then .text */
|
439 |
|
|
if (strcmp (input_section->name, symbol->section->output_section->name) != 0)
|
440 |
|
|
{
|
441 |
|
|
fprintf (stderr,
|
442 |
|
|
"BFD Link Error: jump (PC rel26) to section (%s) not supported\n",
|
443 |
|
|
symbol->section->output_section->name);
|
444 |
|
|
return bfd_reloc_undefined;
|
445 |
|
|
}
|
446 |
|
|
|
447 |
|
|
insn = bfd_get_32 (abfd, (bfd_byte *)data + reloc_entry->address);
|
448 |
|
|
allignment = 1 << (input_section->output_section->alignment_power - 1);
|
449 |
|
|
vallo = insn & 0x03FFFFFF;
|
450 |
|
|
|
451 |
|
|
if (vallo & 0x03000000)
|
452 |
|
|
vallo = ~(vallo | 0xFC000000) + 1;
|
453 |
|
|
|
454 |
|
|
/* vallo is the vma for the next instruction. */
|
455 |
|
|
vallo += (((unsigned long) (input_section->output_section->vma +
|
456 |
|
|
input_section->output_offset) +
|
457 |
|
|
allignment) & ~allignment);
|
458 |
|
|
|
459 |
|
|
/* val is the displacement (PC relative to next instruction). */
|
460 |
|
|
val = (symbol->section->output_offset +
|
461 |
|
|
symbol->section->output_section->vma + symbol->value)
|
462 |
|
|
- vallo;
|
463 |
|
|
#if 0
|
464 |
|
|
printf ("DEBUG elf32_dlx_relocate26: We are here\n");
|
465 |
|
|
printf ("DEBUG: The insn = 0x%08x\n", insn);
|
466 |
|
|
printf ("DEBUG: The vallo = 0x%08x\n", vallo);
|
467 |
|
|
printf ("DEBUG: The val = 0x%08x\n", val);
|
468 |
|
|
printf ("DEBUG: The abs(val) = 0x%08x\n", abs (val));
|
469 |
|
|
printf ("DEBUG: The symbol name = %s\n", bfd_asymbol_name (symbol));
|
470 |
|
|
printf ("DEBUG: The symbol->value = 0x%08x\n", symbol->value);
|
471 |
|
|
printf ("DEBUG: The vma = 0x%08x\n", symbol->section->output_section->vma);
|
472 |
|
|
printf ("DEBUG: The output_offset = 0x%08x\n", symbol->section->output_offset);
|
473 |
|
|
printf ("DEBUG: The input_vma = 0x%08x\n", input_section->output_section->vma);
|
474 |
|
|
printf ("DEBUG: The input_offset = 0x%08x\n", input_section->output_offset);
|
475 |
|
|
printf ("DEBUG: The input_name = %s\n", input_section->name);
|
476 |
|
|
printf ("DEBUG: The addend = 0x%08x\n", reloc_entry->addend);
|
477 |
|
|
#endif
|
478 |
|
|
|
479 |
|
|
if (abs ((int) val) > 0x01FFFFFF)
|
480 |
|
|
return bfd_reloc_outofrange;
|
481 |
|
|
|
482 |
|
|
insn = (insn & 0xFC000000) | (val & 0x03FFFFFF);
|
483 |
|
|
bfd_put_32 (abfd, insn,
|
484 |
|
|
(bfd_byte *) data + reloc_entry->address);
|
485 |
|
|
|
486 |
|
|
return bfd_reloc_ok;
|
487 |
|
|
}
|
488 |
|
|
|
489 |
|
|
/* A mapping from BFD reloc types to DLX ELF reloc types.
|
490 |
|
|
Stolen from elf32-mips.c.
|
491 |
|
|
|
492 |
|
|
More about this table - for dlx elf relocation we do not really
|
493 |
|
|
need this table, if we have a rtype defined in this table will
|
494 |
|
|
caused tc_gen_relocate confused and die on us, but if we remove
|
495 |
|
|
this table it will caused more problem, so for now simple soulation
|
496 |
|
|
is to remove those entries which may cause problem. */
|
497 |
|
|
struct elf_reloc_map
|
498 |
|
|
{
|
499 |
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
500 |
|
|
enum elf_dlx_reloc_type elf_reloc_val;
|
501 |
|
|
};
|
502 |
|
|
|
503 |
|
|
static const struct elf_reloc_map dlx_reloc_map[] =
|
504 |
|
|
{
|
505 |
|
|
{ BFD_RELOC_NONE, R_DLX_NONE },
|
506 |
|
|
{ BFD_RELOC_16, R_DLX_RELOC_16 },
|
507 |
|
|
#if 0
|
508 |
|
|
{ BFD_RELOC_DLX_JMP26, R_DLX_RELOC_26_PCREL },
|
509 |
|
|
#endif
|
510 |
|
|
{ BFD_RELOC_32, R_DLX_RELOC_32 },
|
511 |
|
|
{ BFD_RELOC_DLX_HI16_S, R_DLX_RELOC_16_HI },
|
512 |
|
|
{ BFD_RELOC_DLX_LO16, R_DLX_RELOC_16_LO },
|
513 |
|
|
{ BFD_RELOC_VTABLE_INHERIT, R_DLX_GNU_VTINHERIT },
|
514 |
|
|
{ BFD_RELOC_VTABLE_ENTRY, R_DLX_GNU_VTENTRY }
|
515 |
|
|
};
|
516 |
|
|
|
517 |
|
|
|
518 |
|
|
/* Look through the relocs for a section during the first phase.
|
519 |
|
|
Since we don't do .gots or .plts, we just need to consider the
|
520 |
|
|
virtual table relocs for gc. */
|
521 |
|
|
|
522 |
|
|
static boolean
|
523 |
|
|
elf32_dlx_check_relocs (abfd, info, sec, relocs)
|
524 |
|
|
bfd *abfd;
|
525 |
|
|
struct bfd_link_info *info;
|
526 |
|
|
asection *sec;
|
527 |
|
|
const Elf_Internal_Rela *relocs;
|
528 |
|
|
{
|
529 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
530 |
|
|
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
531 |
|
|
const Elf_Internal_Rela *rel;
|
532 |
|
|
const Elf_Internal_Rela *rel_end;
|
533 |
|
|
|
534 |
|
|
if (info->relocateable)
|
535 |
|
|
return true;
|
536 |
|
|
|
537 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
538 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
539 |
|
|
sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
|
540 |
|
|
if (!elf_bad_symtab (abfd))
|
541 |
|
|
sym_hashes_end -= symtab_hdr->sh_info;
|
542 |
|
|
|
543 |
|
|
rel_end = relocs + sec->reloc_count;
|
544 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
545 |
|
|
{
|
546 |
|
|
struct elf_link_hash_entry *h;
|
547 |
|
|
unsigned long r_symndx;
|
548 |
|
|
|
549 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
550 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
551 |
|
|
h = NULL;
|
552 |
|
|
else
|
553 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
554 |
|
|
|
555 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
556 |
|
|
{
|
557 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
558 |
|
|
Reconstruct it for later use during GC. */
|
559 |
|
|
case R_DLX_GNU_VTINHERIT:
|
560 |
|
|
if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
561 |
|
|
return false;
|
562 |
|
|
break;
|
563 |
|
|
|
564 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
565 |
|
|
used. Record for later use during GC. */
|
566 |
|
|
case R_DLX_GNU_VTENTRY:
|
567 |
|
|
if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
568 |
|
|
return false;
|
569 |
|
|
break;
|
570 |
|
|
}
|
571 |
|
|
}
|
572 |
|
|
|
573 |
|
|
return true;
|
574 |
|
|
}
|
575 |
|
|
|
576 |
|
|
/* Given a BFD reloc type, return a howto structure. */
|
577 |
|
|
|
578 |
|
|
static reloc_howto_type *
|
579 |
|
|
elf32_dlx_reloc_type_lookup (abfd, code)
|
580 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
581 |
|
|
bfd_reloc_code_real_type code;
|
582 |
|
|
{
|
583 |
|
|
unsigned int i;
|
584 |
|
|
|
585 |
|
|
for (i = 0; i < sizeof (dlx_reloc_map) / sizeof (struct elf_reloc_map); i++)
|
586 |
|
|
if (dlx_reloc_map[i].bfd_reloc_val == code)
|
587 |
|
|
return &dlx_elf_howto_table[(int) dlx_reloc_map[i].elf_reloc_val];
|
588 |
|
|
|
589 |
|
|
switch (code)
|
590 |
|
|
{
|
591 |
|
|
default:
|
592 |
|
|
bfd_set_error (bfd_error_bad_value);
|
593 |
|
|
return NULL;
|
594 |
|
|
case BFD_RELOC_16_PCREL_S2:
|
595 |
|
|
return &elf_dlx_gnu_rel16_s2;
|
596 |
|
|
case BFD_RELOC_DLX_JMP26:
|
597 |
|
|
return &elf_dlx_gnu_rel26_s2;
|
598 |
|
|
case BFD_RELOC_HI16_S:
|
599 |
|
|
return &elf_dlx_reloc_16_hi;
|
600 |
|
|
case BFD_RELOC_LO16:
|
601 |
|
|
return &elf_dlx_reloc_16_lo;
|
602 |
|
|
}
|
603 |
|
|
}
|
604 |
|
|
|
605 |
|
|
static reloc_howto_type *
|
606 |
|
|
dlx_rtype_to_howto (r_type)
|
607 |
|
|
unsigned int r_type;
|
608 |
|
|
{
|
609 |
|
|
switch (r_type)
|
610 |
|
|
{
|
611 |
|
|
case R_DLX_RELOC_16_PCREL:
|
612 |
|
|
return & elf_dlx_gnu_rel16_s2;
|
613 |
|
|
break;
|
614 |
|
|
case R_DLX_RELOC_26_PCREL:
|
615 |
|
|
return & elf_dlx_gnu_rel26_s2;
|
616 |
|
|
break;
|
617 |
|
|
case R_DLX_RELOC_16_HI:
|
618 |
|
|
return & elf_dlx_reloc_16_hi;
|
619 |
|
|
break;
|
620 |
|
|
case R_DLX_RELOC_16_LO:
|
621 |
|
|
return & elf_dlx_reloc_16_lo;
|
622 |
|
|
break;
|
623 |
|
|
|
624 |
|
|
default:
|
625 |
|
|
BFD_ASSERT (r_type < (unsigned int) R_DLX_max);
|
626 |
|
|
return & dlx_elf_howto_table[r_type];
|
627 |
|
|
break;
|
628 |
|
|
}
|
629 |
|
|
}
|
630 |
|
|
|
631 |
|
|
static void
|
632 |
|
|
elf32_dlx_info_to_howto (abfd, cache_ptr, dst)
|
633 |
|
|
bfd * abfd ATTRIBUTE_UNUSED;
|
634 |
|
|
arelent * cache_ptr ATTRIBUTE_UNUSED;
|
635 |
|
|
Elf32_Internal_Rela * dst ATTRIBUTE_UNUSED;
|
636 |
|
|
{
|
637 |
|
|
abort ();
|
638 |
|
|
}
|
639 |
|
|
|
640 |
|
|
static void
|
641 |
|
|
elf32_dlx_info_to_howto_rel (abfd, cache_ptr, dst)
|
642 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
643 |
|
|
arelent *cache_ptr;
|
644 |
|
|
Elf32_Internal_Rel *dst;
|
645 |
|
|
{
|
646 |
|
|
unsigned int r_type;
|
647 |
|
|
|
648 |
|
|
r_type = ELF32_R_TYPE (dst->r_info);
|
649 |
|
|
cache_ptr->howto = dlx_rtype_to_howto (r_type);
|
650 |
|
|
return;
|
651 |
|
|
}
|
652 |
|
|
|
653 |
|
|
#define TARGET_BIG_SYM bfd_elf32_dlx_big_vec
|
654 |
|
|
#define TARGET_BIG_NAME "elf32-dlx"
|
655 |
|
|
#define ELF_ARCH bfd_arch_dlx
|
656 |
|
|
#define ELF_MACHINE_CODE EM_DLX
|
657 |
|
|
#define ELF_MAXPAGESIZE 1 /* FIXME: This number is wrong, It should be the page size in bytes. */
|
658 |
|
|
|
659 |
|
|
#include "elf32-target.h"
|