1999-05-03 09:29:11 +02:00
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/* BFD back-end for Motorolla MCore COFF/PE
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Copyright 1999
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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, 59 Temple Place - Suite 330,
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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 "coff/mcore.h"
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#include "coff/internal.h"
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#include "coff/pe.h"
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#include "libcoff.h"
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#ifdef BADMAG
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#undef BADMAG
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#endif
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#define BADMAG(x) MCOREBADMAG(x)
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#ifndef NUM_ELEM
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#define NUM_ELEM(A) (sizeof (A) / sizeof (A)[0])
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#endif
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/* This file is compiled more than once, but we only compile the
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final_link routine once. */
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extern boolean mcore_bfd_coff_final_link
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PARAMS ((bfd *, struct bfd_link_info *));
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static struct bfd_link_hash_table * coff_mcore_link_hash_table_create
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PARAMS ((bfd *));
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static bfd_reloc_status_type mcore_coff_unsupported_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static boolean coff_mcore_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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struct internal_reloc *, struct internal_syment *, asection **));
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static reloc_howto_type * mcore_coff_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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static reloc_howto_type * coff_mcore_rtype_to_howto
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PARAMS ((bfd *, asection *, struct internal_reloc *,
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struct coff_link_hash_entry *, struct internal_syment *, bfd_vma *));
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static const bfd_target * pe_object_p
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PARAMS ((bfd *));
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/* The NT loader points the toc register to &toc + 32768, in order to
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use the complete range of a 16-bit displacement. We have to adjust
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for this when we fix up loads displaced off the toc reg. */
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#define TOC_LOAD_ADJUSTMENT (-32768)
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#define TOC_SECTION_NAME ".private.toc"
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/* The main body of code is in coffcode.h. */
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
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/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
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from smaller values. Start with zero, widen, *then* decrement. */
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#define MINUS_ONE (((bfd_vma)0) - 1)
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static reloc_howto_type mcore_coff_howto_table[] =
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{
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/* Unused: */
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HOWTO (IMAGE_REL_MCORE_ABSOLUTE,/* 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, /* dont complain_on_overflow */
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1999-05-15 17:38:13 +02:00
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NULL, /* special_function */
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1999-05-03 09:29:11 +02:00
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"ABSOLUTE", /* name */
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false, /* partial_inplace */
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0x00, /* src_mask */
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0x00, /* dst_mask */
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false), /* pcrel_offset */
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HOWTO (IMAGE_REL_MCORE_ADDR32,/* 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_bitfield, /* complain_on_overflow */
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1999-05-15 17:38:13 +02:00
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NULL, /* special_function */
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1999-05-03 09:29:11 +02:00
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"ADDR32", /* 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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/* 8 bits + 2 zero bits; jmpi/jsri/lrw instructions.
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Should not appear in object files. */
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HOWTO (IMAGE_REL_MCORE_PCREL_IMM8BY4, /* type */
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2, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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1999-05-15 17:38:13 +02:00
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mcore_coff_unsupported_reloc, /* special_function */
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1999-05-03 09:29:11 +02:00
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"IMM8BY4", /* 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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true), /* pcrel_offset */
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/* bsr/bt/bf/br instructions; 11 bits + 1 zero bit
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Span 2k instructions == 4k bytes.
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Only useful pieces at the relocated address are the opcode (5 bits) */
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HOWTO (IMAGE_REL_MCORE_PCREL_IMM11BY2,/* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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11, /* 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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NULL, /* special_function */
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"IMM11BY2", /* name */
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false, /* partial_inplace */
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0x0, /* src_mask */
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0x7ff, /* dst_mask */
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true), /* pcrel_offset */
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/* 4 bits + 1 zero bit; 'loopt' instruction only; unsupported. */
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HOWTO (IMAGE_REL_MCORE_PCREL_IMM4BY2, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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4, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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1999-05-15 17:38:13 +02:00
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mcore_coff_unsupported_reloc, /* special_function */
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1999-05-03 09:29:11 +02:00
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"IMM4BY2", /* 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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true), /* pcrel_offset */
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/* 32-bit pc-relative. Eventually this will help support PIC code. */
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HOWTO (IMAGE_REL_MCORE_PCREL_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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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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NULL, /* special_function */
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"PCREL_32", /* name */
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false, /* partial_inplace */
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0x0, /* src_mask */
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0xffffffff, /* dst_mask */
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true), /* pcrel_offset */
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/* Like PCREL_IMM11BY2, this relocation indicates that there is a
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'jsri' at the specified address. There is a separate relocation
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entry for the literal pool entry that it references, but we
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might be able to change the jsri to a bsr if the target turns out
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to be close enough [even though we won't reclaim the literal pool
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entry, we'll get some runtime efficiency back]. Note that this
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is a relocation that we are allowed to safely ignore. */
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HOWTO (IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2,/* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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11, /* 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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NULL, /* special_function */
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"JSR_IMM11BY2", /* name */
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false, /* partial_inplace */
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0x0, /* src_mask */
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0x7ff, /* dst_mask */
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1999-05-15 17:38:13 +02:00
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true), /* pcrel_offset */
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HOWTO (IMAGE_REL_MCORE_RVA, /* 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_signed, /* complain_on_overflow */
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NULL, /* special_function */
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"MCORE_RVA", /* 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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1999-05-03 09:29:11 +02:00
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true) /* pcrel_offset */
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};
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/* Extend the coff_link_hash_table structure with a few M*Core specific fields.
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This allows us to store global data here without actually creating any
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global variables, which is a no-no in the BFD world. */
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typedef struct coff_mcore_link_hash_table
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{
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/* The original coff_link_hash_table structure. MUST be first field. */
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struct coff_link_hash_table root;
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bfd * bfd_of_toc_owner;
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long int global_toc_size;
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long int import_table_size;
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long int first_thunk_address;
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long int thunk_size;
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}
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mcore_hash_table;
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/* Get the MCore coff linker hash table from a link_info structure. */
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#define coff_mcore_hash_table(info) \
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((mcore_hash_table *) ((info)->hash))
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/* Create an MCore coff linker hash table. */
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static struct bfd_link_hash_table *
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coff_mcore_link_hash_table_create (abfd)
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bfd * abfd;
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{
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mcore_hash_table * ret;
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ret = ((mcore_hash_table *) bfd_alloc (abfd, sizeof (* ret)));
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if (ret == (mcore_hash_table *) NULL)
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return NULL;
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if (! _bfd_coff_link_hash_table_init
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(& ret->root, abfd, _bfd_coff_link_hash_newfunc))
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{
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bfd_release (abfd, ret);
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return (struct bfd_link_hash_table *) NULL;
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}
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ret->bfd_of_toc_owner = NULL;
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ret->global_toc_size = 0;
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ret->import_table_size = 0;
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ret->first_thunk_address = 0;
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ret->thunk_size = 0;
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return & ret->root.root;
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}
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/*ARGSUSED*/
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static bfd_reloc_status_type
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mcore_coff_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
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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_ASSERT (reloc_entry->howto != (reloc_howto_type *)0);
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_bfd_error_handler (_("%s: Relocation %s (%d) is not currently supported.\n"),
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bfd_get_filename (abfd),
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reloc_entry->howto->name,
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reloc_entry->howto->type);
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return bfd_reloc_notsupported;
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}
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/* A cheesy little macro to make the code a little more readable. */
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#define HOW2MAP(bfd_rtype, mcore_rtype) \
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case bfd_rtype: return & mcore_coff_howto_table [mcore_rtype]
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static reloc_howto_type *
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mcore_coff_reloc_type_lookup (abfd, code)
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bfd * abfd;
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bfd_reloc_code_real_type code;
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{
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switch (code)
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{
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HOW2MAP (BFD_RELOC_32, IMAGE_REL_MCORE_ADDR32);
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HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM8BY4, IMAGE_REL_MCORE_PCREL_IMM8BY4);
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HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM11BY2, IMAGE_REL_MCORE_PCREL_IMM11BY2);
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HOW2MAP (BFD_RELOC_MCORE_PCREL_IMM4BY2, IMAGE_REL_MCORE_PCREL_IMM4BY2);
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HOW2MAP (BFD_RELOC_32_PCREL, IMAGE_REL_MCORE_PCREL_32);
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HOW2MAP (BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2, IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2);
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1999-05-15 17:38:13 +02:00
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HOW2MAP (BFD_RELOC_RVA, IMAGE_REL_MCORE_RVA);
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1999-05-03 09:29:11 +02:00
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default:
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return NULL;
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}
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/*NOTREACHED*/
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}
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|
|
#undef HOW2MAP
|
|
|
|
|
|
|
|
|
|
#define RTYPE2HOWTO(cache_ptr, dst) \
|
|
|
|
|
(cache_ptr)->howto = mcore_coff_howto_table + (dst)->r_type;
|
|
|
|
|
|
|
|
|
|
static reloc_howto_type *
|
|
|
|
|
coff_mcore_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
|
|
|
|
|
bfd * abfd;
|
|
|
|
|
asection * sec;
|
|
|
|
|
struct internal_reloc * rel;
|
|
|
|
|
struct coff_link_hash_entry * h;
|
|
|
|
|
struct internal_syment * sym;
|
|
|
|
|
bfd_vma * addendp;
|
|
|
|
|
{
|
|
|
|
|
reloc_howto_type * howto;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (rel->r_type >= NUM_ELEM (mcore_coff_howto_table))
|
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
|
|
howto = mcore_coff_howto_table + rel->r_type;
|
1999-05-15 17:38:13 +02:00
|
|
|
|
|
|
|
|
|
if (rel->r_type == IMAGE_REL_MCORE_RVA)
|
|
|
|
|
* addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase;
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
|
|
if (howto->pc_relative)
|
|
|
|
|
{
|
|
|
|
|
* addendp = sec->vma - 2; /* XXX guess - is this right ? */
|
|
|
|
|
|
|
|
|
|
/* If the symbol is defined, then the generic code is going to
|
|
|
|
|
add back the symbol value in order to cancel out an
|
|
|
|
|
adjustment it made to the addend. However, we set the addend
|
|
|
|
|
to 0 at the start of this function. We need to adjust here,
|
|
|
|
|
to avoid the adjustment the generic code will make. FIXME:
|
|
|
|
|
This is getting a bit hackish. */
|
|
|
|
|
if (sym != NULL && sym->n_scnum != 0)
|
|
|
|
|
* addendp -= sym->n_value;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
* addendp = 0;
|
|
|
|
|
|
|
|
|
|
return howto;
|
|
|
|
|
}
|
1999-05-16 16:16:52 +02:00
|
|
|
|
|
|
|
|
|
/* Return true if this relocation should appear in the output .reloc section.
|
|
|
|
|
This function is referenced in pe_mkobject in peicode.h. */
|
|
|
|
|
static boolean
|
|
|
|
|
in_reloc_p (abfd, howto)
|
|
|
|
|
bfd * abfd;
|
|
|
|
|
reloc_howto_type * howto;
|
|
|
|
|
{
|
|
|
|
|
return ! howto->pc_relative && howto->type != IMAGE_REL_MCORE_RVA;
|
|
|
|
|
}
|
|
|
|
|
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
|
|
/* The reloc processing routine for the optimized COFF linker. */
|
|
|
|
|
static boolean
|
|
|
|
|
coff_mcore_relocate_section (output_bfd, info, input_bfd, input_section,
|
|
|
|
|
contents, relocs, syms, sections)
|
|
|
|
|
bfd * output_bfd;
|
|
|
|
|
struct bfd_link_info * info;
|
|
|
|
|
bfd * input_bfd;
|
|
|
|
|
asection * input_section;
|
|
|
|
|
bfd_byte * contents;
|
|
|
|
|
struct internal_reloc * relocs;
|
|
|
|
|
struct internal_syment * syms;
|
|
|
|
|
asection ** sections;
|
|
|
|
|
{
|
|
|
|
|
struct internal_reloc * rel;
|
|
|
|
|
struct internal_reloc * relend;
|
|
|
|
|
boolean hihalf;
|
|
|
|
|
bfd_vma hihalf_val;
|
|
|
|
|
|
|
|
|
|
/* If we are performing a relocateable link, we don't need to do a
|
|
|
|
|
thing. The caller will take care of adjusting the reloc
|
|
|
|
|
addresses and symbol indices. */
|
|
|
|
|
if (info->relocateable)
|
|
|
|
|
return true;
|
|
|
|
|
|
1999-05-07 09:44:11 +02:00
|
|
|
|
/* Check if we have the same endianess */
|
|
|
|
|
if ( input_bfd->xvec->byteorder != output_bfd->xvec->byteorder
|
|
|
|
|
&& output_bfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
|
|
|
|
|
{
|
|
|
|
|
(*_bfd_error_handler)
|
|
|
|
|
(_("%s: compiled for a %s endian system and target is %s endian.\n"),
|
|
|
|
|
bfd_get_filename (input_bfd),
|
|
|
|
|
bfd_big_endian (input_bfd) ? "big" : "little",
|
|
|
|
|
bfd_big_endian (output_bfd) ? "big" : "little");
|
|
|
|
|
|
|
|
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
|
|
|
return false;
|
|
|
|
|
}
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
|
|
hihalf = false;
|
|
|
|
|
hihalf_val = 0;
|
|
|
|
|
|
|
|
|
|
rel = relocs;
|
|
|
|
|
relend = rel + input_section->reloc_count;
|
|
|
|
|
|
|
|
|
|
for (; rel < relend; rel++)
|
|
|
|
|
{
|
|
|
|
|
asection * toc_section = NULL;
|
|
|
|
|
bfd_vma relocation;
|
|
|
|
|
long symndx;
|
|
|
|
|
struct internal_syment * sym;
|
|
|
|
|
bfd_vma val;
|
|
|
|
|
bfd_vma addend;
|
|
|
|
|
bfd_reloc_status_type rstat;
|
|
|
|
|
bfd_byte * loc;
|
|
|
|
|
unsigned short r_type = rel->r_type;
|
|
|
|
|
reloc_howto_type * howto = NULL;
|
|
|
|
|
struct coff_link_hash_entry * h;
|
|
|
|
|
const char * my_name;
|
|
|
|
|
|
|
|
|
|
symndx = rel->r_symndx;
|
|
|
|
|
loc = contents + rel->r_vaddr - input_section->vma;
|
|
|
|
|
|
|
|
|
|
if (symndx == -1)
|
|
|
|
|
{
|
|
|
|
|
h = NULL;
|
|
|
|
|
sym = NULL;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
h = obj_coff_sym_hashes (input_bfd)[symndx];
|
|
|
|
|
sym = syms + symndx;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Get the howto and initialise the addend. */
|
|
|
|
|
howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h,
|
|
|
|
|
sym, & addend);
|
|
|
|
|
if (howto == NULL)
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
val = 0;
|
|
|
|
|
|
|
|
|
|
if (h == NULL)
|
|
|
|
|
{
|
|
|
|
|
if (symndx == -1)
|
|
|
|
|
my_name = "*ABS*";
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
asection * sec = sections[symndx];
|
|
|
|
|
|
|
|
|
|
val = (sym->n_value
|
|
|
|
|
+ sec->output_section->vma
|
|
|
|
|
+ sec->output_offset);
|
|
|
|
|
|
|
|
|
|
if (sym == NULL)
|
|
|
|
|
my_name = "*unknown*";
|
|
|
|
|
else if ( sym->_n._n_n._n_zeroes == 0
|
|
|
|
|
&& sym->_n._n_n._n_offset != 0)
|
|
|
|
|
my_name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset;
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
static char buf [SYMNMLEN + 1];
|
|
|
|
|
|
|
|
|
|
strncpy (buf, sym->_n._n_name, SYMNMLEN);
|
|
|
|
|
buf[SYMNMLEN] = '\0';
|
|
|
|
|
my_name = buf;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
if ( h->root.type == bfd_link_hash_defined
|
|
|
|
|
|| h->root.type == bfd_link_hash_defweak)
|
|
|
|
|
{
|
|
|
|
|
asection * sec = h->root.u.def.section;
|
|
|
|
|
|
|
|
|
|
val = (h->root.u.def.value
|
|
|
|
|
+ sec->output_section->vma
|
|
|
|
|
+ sec->output_offset);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
if (! ((*info->callbacks->undefined_symbol)
|
|
|
|
|
(info, h->root.root.string, input_bfd, input_section,
|
|
|
|
|
rel->r_vaddr - input_section->vma)))
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
my_name = h->root.root.string;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
rstat = bfd_reloc_ok;
|
|
|
|
|
|
|
|
|
|
/* Each case must do its own relocation, setting rstat appropriately. */
|
|
|
|
|
switch (r_type)
|
|
|
|
|
{
|
|
|
|
|
default:
|
|
|
|
|
_bfd_error_handler (_("%s: unsupported relocation type 0x%02x"),
|
|
|
|
|
bfd_get_filename (input_bfd), r_type);
|
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
case IMAGE_REL_MCORE_ABSOLUTE:
|
|
|
|
|
fprintf (stderr,
|
|
|
|
|
_("Warning: unsupported reloc %s <file %s, section %s>\n"),
|
|
|
|
|
howto->name,
|
|
|
|
|
bfd_get_filename (input_bfd),
|
|
|
|
|
input_section->name);
|
|
|
|
|
|
|
|
|
|
fprintf (stderr,"sym %ld (%s), r_vaddr %ld (%lx)\n",
|
|
|
|
|
rel->r_symndx, my_name, (long) rel->r_vaddr,
|
|
|
|
|
(unsigned long) rel->r_vaddr);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case IMAGE_REL_MCORE_PCREL_IMM8BY4:
|
|
|
|
|
case IMAGE_REL_MCORE_PCREL_IMM11BY2:
|
|
|
|
|
case IMAGE_REL_MCORE_PCREL_IMM4BY2:
|
|
|
|
|
case IMAGE_REL_MCORE_PCREL_32:
|
|
|
|
|
case IMAGE_REL_MCORE_PCREL_JSR_IMM11BY2:
|
|
|
|
|
case IMAGE_REL_MCORE_ADDR32:
|
1999-05-15 17:38:13 +02:00
|
|
|
|
case IMAGE_REL_MCORE_RVA:
|
1999-05-03 09:29:11 +02:00
|
|
|
|
rstat = _bfd_relocate_contents (howto, input_bfd, val, loc);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
switch (rstat)
|
|
|
|
|
{
|
|
|
|
|
default:
|
|
|
|
|
abort ();
|
|
|
|
|
|
|
|
|
|
case bfd_reloc_ok:
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case bfd_reloc_overflow:
|
|
|
|
|
if (! ((*info->callbacks->reloc_overflow)
|
|
|
|
|
(info, my_name, howto->name,
|
|
|
|
|
(bfd_vma) 0, input_bfd,
|
|
|
|
|
input_section, rel->r_vaddr - input_section->vma)))
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Tailor coffcode.h -- macro heaven. */
|
|
|
|
|
|
|
|
|
|
/* We use the special COFF backend linker, with our own special touch. */
|
|
|
|
|
|
|
|
|
|
#define coff_bfd_reloc_type_lookup mcore_coff_reloc_type_lookup
|
|
|
|
|
#define coff_relocate_section coff_mcore_relocate_section
|
|
|
|
|
#define coff_rtype_to_howto coff_mcore_rtype_to_howto
|
|
|
|
|
|
|
|
|
|
#define SELECT_RELOC(internal, howto) {internal.r_type = howto->type;}
|
|
|
|
|
|
|
|
|
|
#define COFF_PAGE_SIZE 0x1000
|
|
|
|
|
|
|
|
|
|
#include "coffcode.h"
|
|
|
|
|
|
|
|
|
|
static const bfd_target *
|
|
|
|
|
pe_object_p (abfd)
|
|
|
|
|
bfd * abfd;
|
|
|
|
|
{
|
|
|
|
|
#ifdef COFF_IMAGE_WITH_PE
|
|
|
|
|
/* We need to hack badly to handle a PE image correctly. In PE
|
|
|
|
|
images created by the GNU linker, the offset to the COFF header
|
|
|
|
|
is always the size. However, this is not the case in images
|
|
|
|
|
generated by other PE linkers. The PE format stores a four byte
|
|
|
|
|
offset to the PE signature just before the COFF header at
|
|
|
|
|
location 0x3c of the file. We pick up that offset, verify that
|
|
|
|
|
the PE signature is there, and then set ourselves up to read in
|
|
|
|
|
the COFF header. */
|
|
|
|
|
{
|
|
|
|
|
bfd_byte ext_offset[4];
|
|
|
|
|
file_ptr offset;
|
|
|
|
|
bfd_byte ext_signature[4];
|
|
|
|
|
unsigned long signature;
|
|
|
|
|
|
|
|
|
|
if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0
|
|
|
|
|
|| bfd_read (ext_offset, 1, 4, abfd) != 4)
|
|
|
|
|
{
|
|
|
|
|
if (bfd_get_error () != bfd_error_system_call)
|
|
|
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
offset = bfd_h_get_32 (abfd, ext_offset);
|
|
|
|
|
|
|
|
|
|
if (bfd_seek (abfd, offset, SEEK_SET) != 0
|
|
|
|
|
|| bfd_read (ext_signature, 1, 4, abfd) != 4)
|
|
|
|
|
{
|
|
|
|
|
if (bfd_get_error () != bfd_error_system_call)
|
|
|
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
signature = bfd_h_get_32 (abfd, ext_signature);
|
|
|
|
|
|
|
|
|
|
if (signature != 0x4550)
|
|
|
|
|
{
|
|
|
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Here is the hack. coff_object_p wants to read filhsz bytes to
|
|
|
|
|
pick up the COFF header. We adjust so that that will work. 20
|
|
|
|
|
is the size of the mips COFF filehdr. */
|
|
|
|
|
if (bfd_seek (abfd, (bfd_tell (abfd) - bfd_coff_filhsz (abfd) + 20),
|
|
|
|
|
SEEK_SET) != 0)
|
|
|
|
|
{
|
|
|
|
|
if (bfd_get_error () != bfd_error_system_call)
|
|
|
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
return coff_object_p (abfd);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* The transfer vectors that lead the outside world to all of the above. */
|
|
|
|
|
|
|
|
|
|
const bfd_target
|
|
|
|
|
TARGET_BIG_SYM =
|
|
|
|
|
{
|
|
|
|
|
TARGET_BIG_NAME,
|
|
|
|
|
bfd_target_coff_flavour,
|
|
|
|
|
BFD_ENDIAN_BIG, /* data byte order is big */
|
|
|
|
|
BFD_ENDIAN_BIG, /* header byte order is big */
|
|
|
|
|
|
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
|
|
|
HAS_LINENO | HAS_DEBUG |
|
|
|
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
|
|
|
|
|
|
|
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
|
|
|
|
|
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
|
|
|
|
|
|
|
|
|
|
0, /* leading char */
|
|
|
|
|
'/', /* ar_pad_char */
|
|
|
|
|
15, /* ar_max_namelen */
|
|
|
|
|
|
|
|
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
|
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
|
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
|
|
|
|
|
|
|
|
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
|
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
|
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
|
|
|
|
|
|
|
|
|
|
{ _bfd_dummy_target,
|
|
|
|
|
pe_object_p, /* bfd_check_format */
|
|
|
|
|
bfd_generic_archive_p, /* _bfd_dummy_target */
|
|
|
|
|
pe_object_p
|
|
|
|
|
},
|
|
|
|
|
{ bfd_false,
|
|
|
|
|
coff_mkobject,
|
|
|
|
|
_bfd_generic_mkarchive, /* bfd_set_format */
|
|
|
|
|
bfd_false
|
|
|
|
|
},
|
|
|
|
|
{ bfd_false,
|
|
|
|
|
coff_write_object_contents, /* bfd_write_contents */
|
|
|
|
|
_bfd_write_archive_contents,
|
|
|
|
|
bfd_false
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
|
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
|
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
|
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
|
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
|
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
|
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
|
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
|
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
|
|
|
|
|
|
COFF_SWAP_TABLE,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
const bfd_target
|
|
|
|
|
TARGET_LITTLE_SYM =
|
|
|
|
|
{
|
|
|
|
|
TARGET_LITTLE_NAME,
|
|
|
|
|
bfd_target_coff_flavour,
|
|
|
|
|
BFD_ENDIAN_LITTLE, /* data byte order is little */
|
|
|
|
|
BFD_ENDIAN_LITTLE, /* header byte order is little */
|
|
|
|
|
|
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
|
|
|
HAS_LINENO | HAS_DEBUG |
|
|
|
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
|
|
|
|
|
|
|
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
|
|
|
|
|
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
|
|
|
|
|
|
|
|
|
|
0, /* leading underscore */
|
|
|
|
|
'/', /* ar_pad_char */
|
|
|
|
|
15, /* ar_max_namelen */
|
|
|
|
|
|
|
|
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
|
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
|
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
|
|
|
|
|
|
|
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
|
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
|
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
|
|
|
|
|
|
|
|
|
/* Note that we allow an object file to be treated as a core file as well. */
|
|
|
|
|
{
|
|
|
|
|
_bfd_dummy_target,
|
|
|
|
|
pe_object_p, /* bfd_check_format */
|
|
|
|
|
bfd_generic_archive_p,
|
|
|
|
|
pe_object_p
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
bfd_false,
|
|
|
|
|
coff_mkobject,
|
|
|
|
|
_bfd_generic_mkarchive, /* bfd_set_format */
|
|
|
|
|
bfd_false
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
bfd_false,
|
|
|
|
|
coff_write_object_contents, /* bfd_write_contents */
|
|
|
|
|
_bfd_write_archive_contents,
|
|
|
|
|
bfd_false
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
|
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
|
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
|
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
|
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
|
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
|
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
|
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
|
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
|
|
|
|
|
|
COFF_SWAP_TABLE,
|
|
|
|
|
};
|
|
|
|
|
|