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24 |
jeremybenn |
/* BFD back-end for Intel i860 COFF files.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1999, 2000, 2001, 2002,
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225 |
jeremybenn |
2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
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24 |
jeremybenn |
Created mostly by substituting "860" for "386" in coff-i386.c
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Harry Dolan <dolan@ssd.intel.com>, October 1995
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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 3 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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "coff/i860.h"
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#include "coff/internal.h"
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225 |
jeremybenn |
#ifndef bfd_pe_print_pdata
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#define bfd_pe_print_pdata NULL
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#endif
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24 |
jeremybenn |
#include "libcoff.h"
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
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/* The page size is a guess based on ELF. */
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#define COFF_PAGE_SIZE 0x1000
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/* For some reason when using i860 COFF the value stored in the .text
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section for a reference to a common symbol is the value itself plus
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any desired offset. Ian Taylor, Cygnus Support. */
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/* If we are producing relocatable output, we need to do some
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adjustments to the object file that are not done by the
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bfd_perform_relocation function. This function is called by every
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reloc type to make any required adjustments. */
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static bfd_reloc_status_type
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coff_i860_reloc (bfd *abfd,
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arelent *reloc_entry,
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asymbol *symbol,
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void *data,
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asection *input_section ATTRIBUTE_UNUSED,
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bfd *output_bfd,
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char **error_message ATTRIBUTE_UNUSED)
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{
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symvalue diff;
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if (output_bfd == (bfd *) NULL)
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return bfd_reloc_continue;
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if (bfd_is_com_section (symbol->section))
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{
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/* We are relocating a common symbol. The current value in the
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object file is ORIG + OFFSET, where ORIG is the value of the
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common symbol as seen by the object file when it was compiled
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(this may be zero if the symbol was undefined) and OFFSET is
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the offset into the common symbol (normally zero, but may be
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non-zero when referring to a field in a common structure).
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ORIG is the negative of reloc_entry->addend, which is set by
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the CALC_ADDEND macro below. We want to replace the value in
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the object file with NEW + OFFSET, where NEW is the value of
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the common symbol which we are going to put in the final
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object file. NEW is symbol->value. */
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diff = symbol->value + reloc_entry->addend;
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}
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else
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{
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/* For some reason bfd_perform_relocation always effectively
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ignores the addend for a COFF target when producing
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relocatable output. This seems to be always wrong for 860
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COFF, so we handle the addend here instead. */
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diff = reloc_entry->addend;
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}
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#define DOIT(x) \
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x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask))
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if (diff != 0)
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{
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reloc_howto_type *howto = reloc_entry->howto;
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unsigned char *addr = (unsigned char *) data + reloc_entry->address;
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switch (howto->size)
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{
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case 0:
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{
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char x = bfd_get_8 (abfd, addr);
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DOIT (x);
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bfd_put_8 (abfd, x, addr);
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}
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break;
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case 1:
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{
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short x = bfd_get_16 (abfd, addr);
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DOIT (x);
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bfd_put_16 (abfd, (bfd_vma) x, addr);
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}
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break;
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case 2:
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{
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long x = bfd_get_32 (abfd, addr);
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DOIT (x);
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bfd_put_32 (abfd, (bfd_vma) x, addr);
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}
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break;
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default:
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abort ();
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}
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}
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/* Now let bfd_perform_relocation finish everything up. */
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return bfd_reloc_continue;
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}
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/* This is just a temporary measure until we teach bfd to generate
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these relocations. */
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static bfd_reloc_status_type
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coff_i860_reloc_nyi (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *reloc_entry,
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asymbol *symbol ATTRIBUTE_UNUSED,
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void *data ATTRIBUTE_UNUSED,
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asection *input_section ATTRIBUTE_UNUSED,
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bfd *output_bfd ATTRIBUTE_UNUSED,
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char **error_message ATTRIBUTE_UNUSED)
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{
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reloc_howto_type *howto = reloc_entry->howto;
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fprintf (stderr, _("Relocation `%s' not yet implemented\n"), howto->name);
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return bfd_reloc_notsupported;
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}
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#ifndef PCRELOFFSET
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#define PCRELOFFSET FALSE
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#endif
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static reloc_howto_type howto_table[] =
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{
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EMPTY_HOWTO (0),
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EMPTY_HOWTO (1),
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EMPTY_HOWTO (2),
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EMPTY_HOWTO (3),
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EMPTY_HOWTO (4),
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EMPTY_HOWTO (5),
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HOWTO (R_DIR32, /* 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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coff_i860_reloc, /* special_function */
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"dir32", /* 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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TRUE), /* pcrel_offset */
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/* {7}, */
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HOWTO (R_IMAGEBASE, /* 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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coff_i860_reloc, /* special_function */
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"rva32", /* 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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EMPTY_HOWTO (010),
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EMPTY_HOWTO (011),
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EMPTY_HOWTO (012),
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EMPTY_HOWTO (013),
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EMPTY_HOWTO (014),
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EMPTY_HOWTO (015),
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EMPTY_HOWTO (016),
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HOWTO (R_RELBYTE, /* 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_bitfield, /* complain_on_overflow */
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coff_i860_reloc, /* special_function */
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"8", /* name */
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TRUE, /* partial_inplace */
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0x000000ff, /* src_mask */
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0x000000ff, /* dst_mask */
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PCRELOFFSET), /* pcrel_offset */
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HOWTO (R_RELWORD, /* 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_bitfield, /* complain_on_overflow */
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coff_i860_reloc, /* special_function */
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"16", /* name */
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TRUE, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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PCRELOFFSET), /* pcrel_offset */
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HOWTO (R_RELLONG, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 226 |
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32, /* bitsize */
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| 227 |
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FALSE, /* pc_relative */
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| 228 |
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0, /* bitpos */
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| 229 |
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complain_overflow_bitfield, /* complain_on_overflow */
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| 230 |
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coff_i860_reloc, /* special_function */
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| 231 |
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"32", /* name */
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| 232 |
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TRUE, /* partial_inplace */
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| 233 |
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0xffffffff, /* src_mask */
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| 234 |
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0xffffffff, /* dst_mask */
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| 235 |
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PCRELOFFSET), /* pcrel_offset */
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| 236 |
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HOWTO (R_PCRBYTE, /* type */
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| 237 |
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0, /* rightshift */
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| 238 |
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0, /* size (0 = byte, 1 = short, 2 = long) */
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| 239 |
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8, /* bitsize */
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| 240 |
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TRUE, /* pc_relative */
|
| 241 |
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0, /* bitpos */
|
| 242 |
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complain_overflow_signed, /* complain_on_overflow */
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| 243 |
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coff_i860_reloc, /* special_function */
|
| 244 |
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"DISP8", /* name */
|
| 245 |
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TRUE, /* partial_inplace */
|
| 246 |
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0x000000ff, /* src_mask */
|
| 247 |
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0x000000ff, /* dst_mask */
|
| 248 |
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PCRELOFFSET), /* pcrel_offset */
|
| 249 |
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HOWTO (R_PCRWORD, /* type */
|
| 250 |
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0, /* rightshift */
|
| 251 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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| 252 |
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16, /* bitsize */
|
| 253 |
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TRUE, /* pc_relative */
|
| 254 |
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0, /* bitpos */
|
| 255 |
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complain_overflow_signed, /* complain_on_overflow */
|
| 256 |
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coff_i860_reloc, /* special_function */
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| 257 |
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"DISP16", /* name */
|
| 258 |
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TRUE, /* partial_inplace */
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| 259 |
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0x0000ffff, /* src_mask */
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| 260 |
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0x0000ffff, /* dst_mask */
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| 261 |
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PCRELOFFSET), /* pcrel_offset */
|
| 262 |
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HOWTO (R_PCRLONG, /* type */
|
| 263 |
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0, /* rightshift */
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| 264 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 265 |
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32, /* bitsize */
|
| 266 |
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TRUE, /* pc_relative */
|
| 267 |
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0, /* bitpos */
|
| 268 |
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complain_overflow_signed, /* complain_on_overflow */
|
| 269 |
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coff_i860_reloc, /* special_function */
|
| 270 |
|
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"DISP32", /* name */
|
| 271 |
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TRUE, /* partial_inplace */
|
| 272 |
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0xffffffff, /* src_mask */
|
| 273 |
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0xffffffff, /* dst_mask */
|
| 274 |
|
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PCRELOFFSET), /* pcrel_offset */
|
| 275 |
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EMPTY_HOWTO (0x15),
|
| 276 |
|
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EMPTY_HOWTO (0x16),
|
| 277 |
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EMPTY_HOWTO (0x17),
|
| 278 |
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EMPTY_HOWTO (0x18),
|
| 279 |
|
|
EMPTY_HOWTO (0x19),
|
| 280 |
|
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EMPTY_HOWTO (0x1a),
|
| 281 |
|
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EMPTY_HOWTO (0x1b),
|
| 282 |
|
|
HOWTO (COFF860_R_PAIR, /* type */
|
| 283 |
|
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0, /* rightshift */
|
| 284 |
|
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2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 285 |
|
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16, /* bitsize */
|
| 286 |
|
|
FALSE, /* pc_relative */
|
| 287 |
|
|
0, /* bitpos */
|
| 288 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 289 |
|
|
coff_i860_reloc_nyi, /* special_function */
|
| 290 |
|
|
"PAIR", /* name */
|
| 291 |
|
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FALSE, /* partial_inplace */
|
| 292 |
|
|
0xffff, /* src_mask */
|
| 293 |
|
|
0xffff, /* dst_mask */
|
| 294 |
|
|
FALSE), /* pcrel_offset */
|
| 295 |
|
|
EMPTY_HOWTO (0x1d),
|
| 296 |
|
|
HOWTO (COFF860_R_HIGH, /* type */
|
| 297 |
|
|
16, /* rightshift */
|
| 298 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 299 |
|
|
16, /* bitsize */
|
| 300 |
|
|
FALSE, /* pc_relative */
|
| 301 |
|
|
0, /* bitpos */
|
| 302 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 303 |
|
|
coff_i860_reloc, /* special_function */
|
| 304 |
|
|
"HIGH", /* name */
|
| 305 |
|
|
FALSE, /* partial_inplace */
|
| 306 |
|
|
0xffff, /* src_mask */
|
| 307 |
|
|
0xffff, /* dst_mask */
|
| 308 |
|
|
FALSE), /* pcrel_offset */
|
| 309 |
|
|
HOWTO (COFF860_R_LOW0, /* type */
|
| 310 |
|
|
0, /* rightshift */
|
| 311 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 312 |
|
|
16, /* bitsize */
|
| 313 |
|
|
FALSE, /* pc_relative */
|
| 314 |
|
|
0, /* bitpos */
|
| 315 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 316 |
|
|
coff_i860_reloc, /* special_function */
|
| 317 |
|
|
"LOW0", /* name */
|
| 318 |
|
|
FALSE, /* partial_inplace */
|
| 319 |
|
|
0xffff, /* src_mask */
|
| 320 |
|
|
0xffff, /* dst_mask */
|
| 321 |
|
|
FALSE), /* pcrel_offset */
|
| 322 |
|
|
HOWTO (COFF860_R_LOW1, /* type */
|
| 323 |
|
|
0, /* rightshift */
|
| 324 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 325 |
|
|
16, /* bitsize */
|
| 326 |
|
|
FALSE, /* pc_relative */
|
| 327 |
|
|
0, /* bitpos */
|
| 328 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 329 |
|
|
coff_i860_reloc, /* special_function */
|
| 330 |
|
|
"LOW1", /* name */
|
| 331 |
|
|
FALSE, /* partial_inplace */
|
| 332 |
|
|
0xfffe, /* src_mask */
|
| 333 |
|
|
0xfffe, /* dst_mask */
|
| 334 |
|
|
FALSE), /* pcrel_offset */
|
| 335 |
|
|
HOWTO (COFF860_R_LOW2, /* type */
|
| 336 |
|
|
0, /* rightshift */
|
| 337 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 338 |
|
|
16, /* bitsize */
|
| 339 |
|
|
FALSE, /* pc_relative */
|
| 340 |
|
|
0, /* bitpos */
|
| 341 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 342 |
|
|
coff_i860_reloc, /* special_function */
|
| 343 |
|
|
"LOW2", /* name */
|
| 344 |
|
|
FALSE, /* partial_inplace */
|
| 345 |
|
|
0xfffc, /* src_mask */
|
| 346 |
|
|
0xfffc, /* dst_mask */
|
| 347 |
|
|
FALSE), /* pcrel_offset */
|
| 348 |
|
|
HOWTO (COFF860_R_LOW3, /* type */
|
| 349 |
|
|
0, /* rightshift */
|
| 350 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 351 |
|
|
16, /* bitsize */
|
| 352 |
|
|
FALSE, /* pc_relative */
|
| 353 |
|
|
0, /* bitpos */
|
| 354 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 355 |
|
|
coff_i860_reloc, /* special_function */
|
| 356 |
|
|
"LOW3", /* name */
|
| 357 |
|
|
FALSE, /* partial_inplace */
|
| 358 |
|
|
0xfff8, /* src_mask */
|
| 359 |
|
|
0xfff8, /* dst_mask */
|
| 360 |
|
|
FALSE), /* pcrel_offset */
|
| 361 |
|
|
HOWTO (COFF860_R_LOW4, /* type */
|
| 362 |
|
|
0, /* rightshift */
|
| 363 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 364 |
|
|
16, /* bitsize */
|
| 365 |
|
|
FALSE, /* pc_relative */
|
| 366 |
|
|
0, /* bitpos */
|
| 367 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 368 |
|
|
coff_i860_reloc, /* special_function */
|
| 369 |
|
|
"LOW4", /* name */
|
| 370 |
|
|
FALSE, /* partial_inplace */
|
| 371 |
|
|
0xfff0, /* src_mask */
|
| 372 |
|
|
0xfff0, /* dst_mask */
|
| 373 |
|
|
FALSE), /* pcrel_offset */
|
| 374 |
|
|
HOWTO (COFF860_R_SPLIT0, /* type */
|
| 375 |
|
|
0, /* rightshift */
|
| 376 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 377 |
|
|
16, /* bitsize */
|
| 378 |
|
|
FALSE, /* pc_relative */
|
| 379 |
|
|
0, /* bitpos */
|
| 380 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 381 |
|
|
coff_i860_reloc_nyi, /* special_function */
|
| 382 |
|
|
"SPLIT0", /* name */
|
| 383 |
|
|
FALSE, /* partial_inplace */
|
| 384 |
|
|
0x1f07ff, /* src_mask */
|
| 385 |
|
|
0x1f07ff, /* dst_mask */
|
| 386 |
|
|
FALSE), /* pcrel_offset */
|
| 387 |
|
|
HOWTO (COFF860_R_SPLIT1, /* type */
|
| 388 |
|
|
0, /* rightshift */
|
| 389 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 390 |
|
|
16, /* bitsize */
|
| 391 |
|
|
FALSE, /* pc_relative */
|
| 392 |
|
|
0, /* bitpos */
|
| 393 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 394 |
|
|
coff_i860_reloc_nyi, /* special_function */
|
| 395 |
|
|
"SPLIT1", /* name */
|
| 396 |
|
|
FALSE, /* partial_inplace */
|
| 397 |
|
|
0x1f07fe, /* src_mask */
|
| 398 |
|
|
0x1f07fe, /* dst_mask */
|
| 399 |
|
|
FALSE), /* pcrel_offset */
|
| 400 |
|
|
HOWTO (COFF860_R_SPLIT2, /* type */
|
| 401 |
|
|
0, /* rightshift */
|
| 402 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 403 |
|
|
16, /* bitsize */
|
| 404 |
|
|
FALSE, /* pc_relative */
|
| 405 |
|
|
0, /* bitpos */
|
| 406 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 407 |
|
|
coff_i860_reloc_nyi, /* special_function */
|
| 408 |
|
|
"SPLIT2", /* name */
|
| 409 |
|
|
FALSE, /* partial_inplace */
|
| 410 |
|
|
0x1f07fc, /* src_mask */
|
| 411 |
|
|
0x1f07fc, /* dst_mask */
|
| 412 |
|
|
FALSE), /* pcrel_offset */
|
| 413 |
|
|
HOWTO (COFF860_R_HIGHADJ, /* type */
|
| 414 |
|
|
0, /* rightshift */
|
| 415 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 416 |
|
|
16, /* bitsize */
|
| 417 |
|
|
FALSE, /* pc_relative */
|
| 418 |
|
|
0, /* bitpos */
|
| 419 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 420 |
|
|
coff_i860_reloc_nyi, /* special_function */
|
| 421 |
|
|
"HIGHADJ", /* name */
|
| 422 |
|
|
FALSE, /* partial_inplace */
|
| 423 |
|
|
0xffff, /* src_mask */
|
| 424 |
|
|
0xffff, /* dst_mask */
|
| 425 |
|
|
FALSE), /* pcrel_offset */
|
| 426 |
|
|
HOWTO (COFF860_R_BRADDR, /* type */
|
| 427 |
|
|
2, /* rightshift */
|
| 428 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 429 |
|
|
26, /* bitsize */
|
| 430 |
|
|
TRUE, /* pc_relative */
|
| 431 |
|
|
0, /* bitpos */
|
| 432 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 433 |
|
|
coff_i860_reloc_nyi, /* special_function */
|
| 434 |
|
|
"BRADDR", /* name */
|
| 435 |
|
|
FALSE, /* partial_inplace */
|
| 436 |
|
|
0x3ffffff, /* src_mask */
|
| 437 |
|
|
0x3ffffff, /* dst_mask */
|
| 438 |
|
|
TRUE) /* pcrel_offset */
|
| 439 |
|
|
};
|
| 440 |
|
|
|
| 441 |
|
|
/* Turn a howto into a reloc number. */
|
| 442 |
|
|
|
| 443 |
|
|
#define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
|
| 444 |
|
|
#define BADMAG(x) I860BADMAG(x)
|
| 445 |
|
|
#define I860 1 /* Customize coffcode.h */
|
| 446 |
|
|
|
| 447 |
|
|
#define RTYPE2HOWTO(cache_ptr, dst) \
|
| 448 |
|
|
((cache_ptr)->howto = \
|
| 449 |
|
|
((dst)->r_type < sizeof (howto_table) / sizeof (howto_table[0]) \
|
| 450 |
|
|
? howto_table + (dst)->r_type \
|
| 451 |
|
|
: NULL))
|
| 452 |
|
|
|
| 453 |
|
|
/* For 860 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared
|
| 454 |
|
|
library. On some other COFF targets STYP_BSS is normally
|
| 455 |
|
|
STYP_NOLOAD. */
|
| 456 |
|
|
#define BSS_NOLOAD_IS_SHARED_LIBRARY
|
| 457 |
|
|
|
| 458 |
|
|
/* Compute the addend of a reloc. If the reloc is to a common symbol,
|
| 459 |
|
|
the object file contains the value of the common symbol. By the
|
| 460 |
|
|
time this is called, the linker may be using a different symbol
|
| 461 |
|
|
from a different object file with a different value. Therefore, we
|
| 462 |
|
|
hack wildly to locate the original symbol from this file so that we
|
| 463 |
|
|
can make the correct adjustment. This macro sets coffsym to the
|
| 464 |
|
|
symbol from the original file, and uses it to set the addend value
|
| 465 |
|
|
correctly. If this is not a common symbol, the usual addend
|
| 466 |
|
|
calculation is done, except that an additional tweak is needed for
|
| 467 |
|
|
PC relative relocs.
|
| 468 |
|
|
FIXME: This macro refers to symbols and asect; these are from the
|
| 469 |
|
|
calling function, not the macro arguments. */
|
| 470 |
|
|
|
| 471 |
|
|
#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr)
|
| 472 |
|
|
|
| 473 |
|
|
/* We use the special COFF backend linker. */
|
| 474 |
|
|
#define coff_relocate_section _bfd_coff_generic_relocate_section
|
| 475 |
|
|
|
| 476 |
|
|
static reloc_howto_type *
|
| 477 |
|
|
coff_i860_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
|
| 478 |
|
|
asection *sec,
|
| 479 |
|
|
struct internal_reloc *rel,
|
| 480 |
|
|
struct coff_link_hash_entry *h,
|
| 481 |
|
|
struct internal_syment *sym,
|
| 482 |
|
|
bfd_vma *addendp)
|
| 483 |
|
|
{
|
| 484 |
|
|
|
| 485 |
|
|
reloc_howto_type *howto;
|
| 486 |
|
|
|
| 487 |
|
|
if (rel->r_type > sizeof (howto_table) / sizeof (howto_table[0]))
|
| 488 |
|
|
{
|
| 489 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 490 |
|
|
return NULL;
|
| 491 |
|
|
}
|
| 492 |
|
|
|
| 493 |
|
|
howto = howto_table + rel->r_type;
|
| 494 |
|
|
|
| 495 |
|
|
if (howto->pc_relative)
|
| 496 |
|
|
*addendp += sec->vma;
|
| 497 |
|
|
|
| 498 |
|
|
if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
|
| 499 |
|
|
{
|
| 500 |
|
|
/* This is a common symbol. The section contents include the
|
| 501 |
|
|
size (sym->n_value) as an addend. The relocate_section
|
| 502 |
|
|
function will be adding in the final value of the symbol. We
|
| 503 |
|
|
need to subtract out the current size in order to get the
|
| 504 |
|
|
correct result. */
|
| 505 |
|
|
|
| 506 |
|
|
BFD_ASSERT (h != NULL);
|
| 507 |
|
|
|
| 508 |
|
|
/* I think we *do* want to bypass this. If we don't, I have seen some data
|
| 509 |
|
|
parameters get the wrong relocation address. If I link two versions
|
| 510 |
|
|
with and without this section bypassed and then do a binary comparison,
|
| 511 |
|
|
the addresses which are different can be looked up in the map. The
|
| 512 |
|
|
case in which this section has been bypassed has addresses which correspond
|
| 513 |
|
|
to values I can find in the map. */
|
| 514 |
|
|
*addendp -= sym->n_value;
|
| 515 |
|
|
}
|
| 516 |
|
|
|
| 517 |
|
|
/* If the output symbol is common (in which case this must be a
|
| 518 |
|
|
relocatable link), we need to add in the final size of the
|
| 519 |
|
|
common symbol. */
|
| 520 |
|
|
if (h != NULL && h->root.type == bfd_link_hash_common)
|
| 521 |
|
|
*addendp += h->root.u.c.size;
|
| 522 |
|
|
|
| 523 |
|
|
return howto;
|
| 524 |
|
|
}
|
| 525 |
|
|
|
| 526 |
|
|
static reloc_howto_type *
|
| 527 |
|
|
coff_i860_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 528 |
|
|
bfd_reloc_code_real_type code)
|
| 529 |
|
|
{
|
| 530 |
|
|
switch (code)
|
| 531 |
|
|
{
|
| 532 |
|
|
case BFD_RELOC_32:
|
| 533 |
|
|
return howto_table + R_DIR32;
|
| 534 |
|
|
case BFD_RELOC_860_PC26:
|
| 535 |
|
|
return howto_table + COFF860_R_BRADDR;
|
| 536 |
|
|
case BFD_RELOC_860_PC16:
|
| 537 |
|
|
/* ??? How to handle PC16 for COFF? SPLIT0 is close for now. */
|
| 538 |
|
|
return howto_table + COFF860_R_SPLIT0;
|
| 539 |
|
|
case BFD_RELOC_860_LOW0:
|
| 540 |
|
|
return howto_table + COFF860_R_LOW0;
|
| 541 |
|
|
case BFD_RELOC_860_SPLIT0:
|
| 542 |
|
|
return howto_table + COFF860_R_SPLIT0;
|
| 543 |
|
|
case BFD_RELOC_860_LOW1:
|
| 544 |
|
|
return howto_table + COFF860_R_LOW1;
|
| 545 |
|
|
case BFD_RELOC_860_SPLIT1:
|
| 546 |
|
|
return howto_table + COFF860_R_SPLIT1;
|
| 547 |
|
|
case BFD_RELOC_860_LOW2:
|
| 548 |
|
|
return howto_table + COFF860_R_LOW2;
|
| 549 |
|
|
case BFD_RELOC_860_SPLIT2:
|
| 550 |
|
|
return howto_table + COFF860_R_SPLIT2;
|
| 551 |
|
|
case BFD_RELOC_860_LOW3:
|
| 552 |
|
|
return howto_table + COFF860_R_LOW3;
|
| 553 |
|
|
case BFD_RELOC_860_HIGHADJ:
|
| 554 |
|
|
return howto_table + COFF860_R_HIGHADJ;
|
| 555 |
|
|
case BFD_RELOC_860_HIGH:
|
| 556 |
|
|
return howto_table + COFF860_R_HIGH;
|
| 557 |
|
|
default:
|
| 558 |
|
|
BFD_FAIL ();
|
| 559 |
|
|
return 0;
|
| 560 |
|
|
}
|
| 561 |
|
|
}
|
| 562 |
|
|
|
| 563 |
|
|
static reloc_howto_type *
|
| 564 |
|
|
coff_i860_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 565 |
|
|
const char *r_name)
|
| 566 |
|
|
{
|
| 567 |
|
|
unsigned int i;
|
| 568 |
|
|
|
| 569 |
|
|
for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
|
| 570 |
|
|
if (howto_table[i].name != NULL
|
| 571 |
|
|
&& strcasecmp (howto_table[i].name, r_name) == 0)
|
| 572 |
|
|
return &howto_table[i];
|
| 573 |
|
|
|
| 574 |
|
|
return NULL;
|
| 575 |
|
|
}
|
| 576 |
|
|
|
| 577 |
|
|
/* This is called from coff_slurp_reloc_table for each relocation
|
| 578 |
|
|
entry. This special handling is due to the `PAIR' relocation
|
| 579 |
|
|
which has a different meaning for the `r_symndx' field. */
|
| 580 |
|
|
|
| 581 |
|
|
static void
|
| 582 |
|
|
i860_reloc_processing (arelent *cache_ptr, struct internal_reloc *dst,
|
| 583 |
|
|
asymbol **symbols, bfd *abfd, asection *asect)
|
| 584 |
|
|
{
|
| 585 |
|
|
if (dst->r_type == COFF860_R_PAIR)
|
| 586 |
|
|
{
|
| 587 |
|
|
/* Handle the PAIR relocation specially. */
|
| 588 |
|
|
cache_ptr->howto = howto_table + dst->r_type;
|
| 589 |
|
|
cache_ptr->address = dst->r_vaddr;
|
| 590 |
|
|
cache_ptr->addend = dst->r_symndx;
|
| 591 |
|
|
cache_ptr->sym_ptr_ptr= bfd_abs_section_ptr->symbol_ptr_ptr;
|
| 592 |
|
|
}
|
| 593 |
|
|
else
|
| 594 |
|
|
{
|
| 595 |
|
|
/* For every other relocation, do exactly what coff_slurp_reloc_table
|
| 596 |
|
|
would do (which this code is taken directly from). */
|
| 597 |
|
|
asymbol *ptr = NULL;
|
| 598 |
|
|
cache_ptr->address = dst->r_vaddr;
|
| 599 |
|
|
|
| 600 |
|
|
if (dst->r_symndx != -1)
|
| 601 |
|
|
{
|
| 602 |
|
|
if (dst->r_symndx < 0 || dst->r_symndx >= obj_conv_table_size (abfd))
|
| 603 |
|
|
{
|
| 604 |
|
|
(*_bfd_error_handler)
|
| 605 |
|
|
(_("%B: warning: illegal symbol index %ld in relocs"),
|
| 606 |
|
|
abfd, dst->r_symndx);
|
| 607 |
|
|
cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
|
| 608 |
|
|
ptr = NULL;
|
| 609 |
|
|
}
|
| 610 |
|
|
else
|
| 611 |
|
|
{
|
| 612 |
|
|
cache_ptr->sym_ptr_ptr = (symbols
|
| 613 |
|
|
+ obj_convert (abfd)[dst->r_symndx]);
|
| 614 |
|
|
ptr = *(cache_ptr->sym_ptr_ptr);
|
| 615 |
|
|
}
|
| 616 |
|
|
}
|
| 617 |
|
|
else
|
| 618 |
|
|
{
|
| 619 |
|
|
cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
|
| 620 |
|
|
ptr = NULL;
|
| 621 |
|
|
}
|
| 622 |
|
|
|
| 623 |
|
|
/* The symbols definitions that we have read in have been
|
| 624 |
|
|
relocated as if their sections started at 0. But the offsets
|
| 625 |
|
|
refering to the symbols in the raw data have not been
|
| 626 |
|
|
modified, so we have to have a negative addend to compensate.
|
| 627 |
|
|
|
| 628 |
|
|
Note that symbols which used to be common must be left alone. */
|
| 629 |
|
|
|
| 630 |
|
|
/* Calculate any reloc addend by looking at the symbol. */
|
| 631 |
|
|
CALC_ADDEND (abfd, ptr, (*dst), cache_ptr);
|
| 632 |
|
|
|
| 633 |
|
|
cache_ptr->address -= asect->vma;
|
| 634 |
|
|
|
| 635 |
|
|
/* Fill in the cache_ptr->howto field from dst->r_type. */
|
| 636 |
|
|
RTYPE2HOWTO (cache_ptr, dst);
|
| 637 |
|
|
}
|
| 638 |
|
|
}
|
| 639 |
|
|
|
| 640 |
|
|
#define coff_rtype_to_howto coff_i860_rtype_to_howto
|
| 641 |
|
|
#define coff_bfd_reloc_type_lookup coff_i860_reloc_type_lookup
|
| 642 |
|
|
#define coff_bfd_reloc_name_lookup coff_i860_reloc_name_lookup
|
| 643 |
|
|
|
| 644 |
|
|
#define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \
|
| 645 |
|
|
i860_reloc_processing (relent, reloc, symbols, abfd, section)
|
| 646 |
|
|
|
| 647 |
|
|
#include "coffcode.h"
|
| 648 |
|
|
|
| 649 |
|
|
static const bfd_target *
|
| 650 |
|
|
i3coff_object_p(bfd *a)
|
| 651 |
|
|
{
|
| 652 |
|
|
return coff_object_p (a);
|
| 653 |
|
|
}
|
| 654 |
|
|
|
| 655 |
|
|
const bfd_target
|
| 656 |
|
|
#ifdef TARGET_SYM
|
| 657 |
|
|
TARGET_SYM =
|
| 658 |
|
|
#else
|
| 659 |
|
|
i860coff_vec =
|
| 660 |
|
|
#endif
|
| 661 |
|
|
{
|
| 662 |
|
|
#ifdef TARGET_NAME
|
| 663 |
|
|
TARGET_NAME,
|
| 664 |
|
|
#else
|
| 665 |
|
|
"coff-i860", /* name */
|
| 666 |
|
|
#endif
|
| 667 |
|
|
bfd_target_coff_flavour,
|
| 668 |
|
|
BFD_ENDIAN_LITTLE, /* data byte order is little */
|
| 669 |
|
|
BFD_ENDIAN_LITTLE, /* header byte order is little */
|
| 670 |
|
|
|
| 671 |
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
| 672 |
|
|
HAS_LINENO | HAS_DEBUG |
|
| 673 |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
| 674 |
|
|
|
| 675 |
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
| 676 |
|
|
'_', /* leading underscore */
|
| 677 |
|
|
'/', /* ar_pad_char */
|
| 678 |
|
|
15, /* ar_max_namelen */
|
| 679 |
|
|
|
| 680 |
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
| 681 |
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
| 682 |
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
| 683 |
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
| 684 |
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
| 685 |
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
| 686 |
|
|
|
| 687 |
|
|
/* Note that we allow an object file to be treated as a core file as well. */
|
| 688 |
|
|
{_bfd_dummy_target, i3coff_object_p, /* bfd_check_format */
|
| 689 |
|
|
bfd_generic_archive_p, i3coff_object_p},
|
| 690 |
|
|
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
|
| 691 |
|
|
bfd_false},
|
| 692 |
|
|
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
|
| 693 |
|
|
_bfd_write_archive_contents, bfd_false},
|
| 694 |
|
|
|
| 695 |
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
| 696 |
|
|
BFD_JUMP_TABLE_COPY (coff),
|
| 697 |
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
| 698 |
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
| 699 |
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
| 700 |
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
| 701 |
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
| 702 |
|
|
BFD_JUMP_TABLE_LINK (coff),
|
| 703 |
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
| 704 |
|
|
|
| 705 |
|
|
NULL,
|
| 706 |
|
|
|
| 707 |
|
|
COFF_SWAP_TABLE
|
| 708 |
|
|
};
|
