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khays |
/* BFD back-end for AMD 64 COFF files.
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148 |
khays |
Copyright 2006, 2007, 2008, 2009, 2010, 2011
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Free Software Foundation, Inc.
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14 |
khays |
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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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Written by Kai Tietz, OneVision Software GmbH&CoKg. */
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#ifndef COFF_WITH_pex64
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#define COFF_WITH_pex64
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#endif
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/* Note we have to make sure not to include headers twice.
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Not all headers are wrapped in #ifdef guards, so we define
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PEI_HEADERS to prevent double including here. */
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#ifndef PEI_HEADERS
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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/x86_64.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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#include "libiberty.h"
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#endif
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#define BADMAG(x) AMD64BADMAG(x)
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#ifdef COFF_WITH_pex64
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# undef AOUTSZ
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# define AOUTSZ PEPAOUTSZ
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# define PEAOUTHDR PEPAOUTHDR
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#endif
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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 AMD 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_amd64_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 !defined(COFF_WITH_PE)
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if (output_bfd == NULL)
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return bfd_reloc_continue;
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#endif
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if (bfd_is_com_section (symbol->section))
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{
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#if !defined(COFF_WITH_PE)
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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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#else
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/* In PE mode, we do not offset the common symbol. */
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diff = reloc_entry->addend;
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#endif
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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 386
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COFF, so we handle the addend here instead. */
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#if defined(COFF_WITH_PE)
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if (output_bfd == NULL)
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{
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reloc_howto_type *howto = reloc_entry->howto;
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/* Although PC relative relocations are very similar between
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PE and non-PE formats, but they are off by 1 << howto->size
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bytes. For the external relocation, PE is very different
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from others. See md_apply_fix3 () in gas/config/tc-amd64.c.
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When we link PE and non-PE object files together to
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generate a non-PE executable, we have to compensate it
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here. */
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if(howto->pc_relative && howto->pcrel_offset)
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diff = -(1 << howto->size);
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else if(symbol->flags & BSF_WEAK)
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diff = reloc_entry->addend - symbol->value;
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else
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diff = -reloc_entry->addend;
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}
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else
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#endif
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diff = reloc_entry->addend;
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}
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#if defined(COFF_WITH_PE)
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/* FIXME: How should this case be handled? */
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if (reloc_entry->howto->type == R_AMD64_IMAGEBASE
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&& output_bfd != NULL
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&& bfd_get_flavour (output_bfd) == bfd_target_coff_flavour)
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diff -= pe_data (output_bfd)->pe_opthdr.ImageBase;
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#endif
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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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case 4:
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{
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long long x = bfd_get_64 (abfd, addr);
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DOIT (x);
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bfd_put_64 (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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#if defined(COFF_WITH_PE)
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/* Return TRUE if this relocation should appear in the output .reloc
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section. */
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static bfd_boolean
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in_reloc_p (bfd *abfd ATTRIBUTE_UNUSED, reloc_howto_type *howto)
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{
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return ! howto->pc_relative && howto->type != R_AMD64_IMAGEBASE
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&& howto->type != R_AMD64_SECREL;
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}
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#endif /* COFF_WITH_PE */
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#ifndef PCRELOFFSET
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#define PCRELOFFSET TRUE
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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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HOWTO (R_AMD64_DIR64, /* type 1*/
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0, /* rightshift */
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4, /* size (0 = byte, 1 = short, 2 = long, 4 = long long) */
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64, /* 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_amd64_reloc, /* special_function */
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"R_X86_64_64", /* name */
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TRUE, /* partial_inplace */
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0xffffffffffffffffll, /* src_mask */
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0xffffffffffffffffll, /* dst_mask */
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TRUE), /* pcrel_offset */
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HOWTO (R_AMD64_DIR32, /* type 2 */
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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_amd64_reloc, /* special_function */
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"R_X86_64_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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TRUE), /* pcrel_offset */
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/* PE IMAGE_REL_AMD64_ADDR32NB relocation (3). */
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HOWTO (R_AMD64_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_amd64_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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/* 32-bit longword PC relative relocation (4). */
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HOWTO (R_AMD64_PCRLONG, /* type 4 */
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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_signed, /* complain_on_overflow */
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coff_amd64_reloc, /* special_function */
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"R_X86_64_PC32", /* 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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PCRELOFFSET), /* pcrel_offset */
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HOWTO (R_AMD64_PCRLONG_1, /* type 5 */
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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_signed, /* complain_on_overflow */
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coff_amd64_reloc, /* special_function */
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"DISP32+1", /* 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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| 275 |
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PCRELOFFSET), /* pcrel_offset */
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| 276 |
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HOWTO (R_AMD64_PCRLONG_2, /* type 6 */
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| 277 |
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0, /* rightshift */
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| 278 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 279 |
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32, /* bitsize */
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| 280 |
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TRUE, /* pc_relative */
|
| 281 |
|
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0, /* bitpos */
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| 282 |
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complain_overflow_signed, /* complain_on_overflow */
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| 283 |
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coff_amd64_reloc, /* special_function */
|
| 284 |
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"DISP32+2", /* name */
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| 285 |
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TRUE, /* partial_inplace */
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| 286 |
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0xffffffff, /* src_mask */
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| 287 |
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0xffffffff, /* dst_mask */
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| 288 |
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PCRELOFFSET), /* pcrel_offset */
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| 289 |
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HOWTO (R_AMD64_PCRLONG_3, /* type 7 */
|
| 290 |
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0, /* rightshift */
|
| 291 |
|
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2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 292 |
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32, /* bitsize */
|
| 293 |
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TRUE, /* pc_relative */
|
| 294 |
|
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0, /* bitpos */
|
| 295 |
|
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complain_overflow_signed, /* complain_on_overflow */
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| 296 |
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coff_amd64_reloc, /* special_function */
|
| 297 |
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"DISP32+3", /* name */
|
| 298 |
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TRUE, /* partial_inplace */
|
| 299 |
|
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0xffffffff, /* src_mask */
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| 300 |
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0xffffffff, /* dst_mask */
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| 301 |
|
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PCRELOFFSET), /* pcrel_offset */
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| 302 |
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HOWTO (R_AMD64_PCRLONG_4, /* type 8 */
|
| 303 |
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0, /* rightshift */
|
| 304 |
|
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2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 305 |
|
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32, /* bitsize */
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| 306 |
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TRUE, /* pc_relative */
|
| 307 |
|
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0, /* bitpos */
|
| 308 |
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complain_overflow_signed, /* complain_on_overflow */
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| 309 |
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coff_amd64_reloc, /* special_function */
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| 310 |
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"DISP32+4", /* name */
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| 311 |
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TRUE, /* partial_inplace */
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| 312 |
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0xffffffff, /* src_mask */
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| 313 |
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0xffffffff, /* dst_mask */
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| 314 |
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PCRELOFFSET), /* pcrel_offset */
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| 315 |
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HOWTO (R_AMD64_PCRLONG_5, /* type 9 */
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| 316 |
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0, /* rightshift */
|
| 317 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 318 |
|
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32, /* bitsize */
|
| 319 |
|
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TRUE, /* pc_relative */
|
| 320 |
|
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0, /* bitpos */
|
| 321 |
|
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complain_overflow_signed, /* complain_on_overflow */
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| 322 |
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coff_amd64_reloc, /* special_function */
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| 323 |
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"DISP32+5", /* name */
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| 324 |
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TRUE, /* partial_inplace */
|
| 325 |
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0xffffffff, /* src_mask */
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| 326 |
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0xffffffff, /* dst_mask */
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| 327 |
|
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PCRELOFFSET), /* pcrel_offset */
|
| 328 |
|
|
EMPTY_HOWTO (10), /* R_AMD64_SECTION 10 */
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| 329 |
|
|
#if defined(COFF_WITH_PE)
|
| 330 |
|
|
/* 32-bit longword section relative relocation (11). */
|
| 331 |
|
|
HOWTO (R_AMD64_SECREL, /* type */
|
| 332 |
|
|
0, /* rightshift */
|
| 333 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 334 |
|
|
32, /* bitsize */
|
| 335 |
|
|
FALSE, /* pc_relative */
|
| 336 |
|
|
0, /* bitpos */
|
| 337 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 338 |
|
|
coff_amd64_reloc, /* special_function */
|
| 339 |
|
|
"secrel32", /* name */
|
| 340 |
|
|
TRUE, /* partial_inplace */
|
| 341 |
|
|
0xffffffff, /* src_mask */
|
| 342 |
|
|
0xffffffff, /* dst_mask */
|
| 343 |
|
|
TRUE), /* pcrel_offset */
|
| 344 |
|
|
#else
|
| 345 |
|
|
EMPTY_HOWTO (11),
|
| 346 |
|
|
#endif
|
| 347 |
|
|
EMPTY_HOWTO (12),
|
| 348 |
|
|
EMPTY_HOWTO (13),
|
| 349 |
|
|
#ifndef DONT_EXTEND_AMD64
|
| 350 |
|
|
HOWTO (R_AMD64_PCRQUAD,
|
| 351 |
|
|
0, /* rightshift */
|
| 352 |
|
|
4, /* size (0 = byte, 1 = short, 2 = long) */
|
| 353 |
|
|
64, /* bitsize */
|
| 354 |
|
|
TRUE, /* pc_relative */
|
| 355 |
|
|
0, /* bitpos */
|
| 356 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 357 |
|
|
coff_amd64_reloc, /* special_function */
|
| 358 |
|
|
"R_X86_64_PC64", /* name */
|
| 359 |
|
|
TRUE, /* partial_inplace */
|
| 360 |
|
|
0xffffffffffffffffll, /* src_mask */
|
| 361 |
|
|
0xffffffffffffffffll, /* dst_mask */
|
| 362 |
|
|
PCRELOFFSET), /* pcrel_offset */
|
| 363 |
|
|
#else
|
| 364 |
|
|
EMPTY_HOWTO (14),
|
| 365 |
|
|
#endif
|
| 366 |
|
|
/* Byte relocation (15). */
|
| 367 |
|
|
HOWTO (R_RELBYTE, /* type */
|
| 368 |
|
|
0, /* rightshift */
|
| 369 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 370 |
|
|
8, /* bitsize */
|
| 371 |
|
|
FALSE, /* pc_relative */
|
| 372 |
|
|
0, /* bitpos */
|
| 373 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 374 |
|
|
coff_amd64_reloc, /* special_function */
|
| 375 |
|
|
"R_X86_64_8", /* name */
|
| 376 |
|
|
TRUE, /* partial_inplace */
|
| 377 |
|
|
0x000000ff, /* src_mask */
|
| 378 |
|
|
0x000000ff, /* dst_mask */
|
| 379 |
|
|
PCRELOFFSET), /* pcrel_offset */
|
| 380 |
|
|
/* 16-bit word relocation (16). */
|
| 381 |
|
|
HOWTO (R_RELWORD, /* type */
|
| 382 |
|
|
0, /* rightshift */
|
| 383 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 384 |
|
|
16, /* bitsize */
|
| 385 |
|
|
FALSE, /* pc_relative */
|
| 386 |
|
|
0, /* bitpos */
|
| 387 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 388 |
|
|
coff_amd64_reloc, /* special_function */
|
| 389 |
|
|
"R_X86_64_16", /* name */
|
| 390 |
|
|
TRUE, /* partial_inplace */
|
| 391 |
|
|
0x0000ffff, /* src_mask */
|
| 392 |
|
|
0x0000ffff, /* dst_mask */
|
| 393 |
|
|
PCRELOFFSET), /* pcrel_offset */
|
| 394 |
|
|
/* 32-bit longword relocation (17). */
|
| 395 |
|
|
HOWTO (R_RELLONG, /* type */
|
| 396 |
|
|
0, /* rightshift */
|
| 397 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 398 |
|
|
32, /* bitsize */
|
| 399 |
|
|
FALSE, /* pc_relative */
|
| 400 |
|
|
0, /* bitpos */
|
| 401 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 402 |
|
|
coff_amd64_reloc, /* special_function */
|
| 403 |
|
|
"R_X86_64_32S", /* name */
|
| 404 |
|
|
TRUE, /* partial_inplace */
|
| 405 |
|
|
0xffffffff, /* src_mask */
|
| 406 |
|
|
0xffffffff, /* dst_mask */
|
| 407 |
|
|
PCRELOFFSET), /* pcrel_offset */
|
| 408 |
|
|
/* Byte PC relative relocation (18). */
|
| 409 |
|
|
HOWTO (R_PCRBYTE, /* type */
|
| 410 |
|
|
0, /* rightshift */
|
| 411 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 412 |
|
|
8, /* bitsize */
|
| 413 |
|
|
TRUE, /* pc_relative */
|
| 414 |
|
|
0, /* bitpos */
|
| 415 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 416 |
|
|
coff_amd64_reloc, /* special_function */
|
| 417 |
|
|
"R_X86_64_PC8", /* name */
|
| 418 |
|
|
TRUE, /* partial_inplace */
|
| 419 |
|
|
0x000000ff, /* src_mask */
|
| 420 |
|
|
0x000000ff, /* dst_mask */
|
| 421 |
|
|
PCRELOFFSET), /* pcrel_offset */
|
| 422 |
|
|
/* 16-bit word PC relative relocation (19). */
|
| 423 |
|
|
HOWTO (R_PCRWORD, /* type */
|
| 424 |
|
|
0, /* rightshift */
|
| 425 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 426 |
|
|
16, /* bitsize */
|
| 427 |
|
|
TRUE, /* pc_relative */
|
| 428 |
|
|
0, /* bitpos */
|
| 429 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 430 |
|
|
coff_amd64_reloc, /* special_function */
|
| 431 |
|
|
"R_X86_64_PC16", /* name */
|
| 432 |
|
|
TRUE, /* partial_inplace */
|
| 433 |
|
|
0x0000ffff, /* src_mask */
|
| 434 |
|
|
0x0000ffff, /* dst_mask */
|
| 435 |
|
|
PCRELOFFSET), /* pcrel_offset */
|
| 436 |
|
|
/* 32-bit longword PC relative relocation (20). */
|
| 437 |
|
|
HOWTO (R_PCRLONG, /* type */
|
| 438 |
|
|
0, /* rightshift */
|
| 439 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 440 |
|
|
32, /* bitsize */
|
| 441 |
|
|
TRUE, /* pc_relative */
|
| 442 |
|
|
0, /* bitpos */
|
| 443 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 444 |
|
|
coff_amd64_reloc, /* special_function */
|
| 445 |
|
|
"R_X86_64_PC32", /* name */
|
| 446 |
|
|
TRUE, /* partial_inplace */
|
| 447 |
|
|
0xffffffff, /* src_mask */
|
| 448 |
|
|
0xffffffff, /* dst_mask */
|
| 449 |
|
|
PCRELOFFSET) /* pcrel_offset */
|
| 450 |
|
|
};
|
| 451 |
|
|
|
| 452 |
|
|
/* Turn a howto into a reloc nunmber */
|
| 453 |
|
|
|
| 454 |
|
|
#define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
|
| 455 |
|
|
#define I386 1 /* Customize coffcode.h */
|
| 456 |
|
|
#define AMD64 1
|
| 457 |
|
|
|
| 458 |
|
|
#define RTYPE2HOWTO(cache_ptr, dst) \
|
| 459 |
|
|
((cache_ptr)->howto = \
|
| 460 |
|
|
((dst)->r_type < ARRAY_SIZE (howto_table)) \
|
| 461 |
|
|
? howto_table + (dst)->r_type \
|
| 462 |
|
|
: NULL)
|
| 463 |
|
|
|
| 464 |
|
|
/* For 386 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared
|
| 465 |
|
|
library. On some other COFF targets STYP_BSS is normally
|
| 466 |
|
|
STYP_NOLOAD. */
|
| 467 |
|
|
#define BSS_NOLOAD_IS_SHARED_LIBRARY
|
| 468 |
|
|
|
| 469 |
|
|
/* Compute the addend of a reloc. If the reloc is to a common symbol,
|
| 470 |
|
|
the object file contains the value of the common symbol. By the
|
| 471 |
|
|
time this is called, the linker may be using a different symbol
|
| 472 |
|
|
from a different object file with a different value. Therefore, we
|
| 473 |
|
|
hack wildly to locate the original symbol from this file so that we
|
| 474 |
|
|
can make the correct adjustment. This macro sets coffsym to the
|
| 475 |
|
|
symbol from the original file, and uses it to set the addend value
|
| 476 |
|
|
correctly. If this is not a common symbol, the usual addend
|
| 477 |
|
|
calculation is done, except that an additional tweak is needed for
|
| 478 |
|
|
PC relative relocs.
|
| 479 |
|
|
FIXME: This macro refers to symbols and asect; these are from the
|
| 480 |
|
|
calling function, not the macro arguments. */
|
| 481 |
|
|
|
| 482 |
|
|
#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
|
| 483 |
|
|
{ \
|
| 484 |
|
|
coff_symbol_type *coffsym = NULL; \
|
| 485 |
|
|
\
|
| 486 |
|
|
if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
|
| 487 |
|
|
coffsym = (obj_symbols (abfd) \
|
| 488 |
|
|
+ (cache_ptr->sym_ptr_ptr - symbols)); \
|
| 489 |
|
|
else if (ptr) \
|
| 490 |
|
|
coffsym = coff_symbol_from (abfd, ptr); \
|
| 491 |
|
|
\
|
| 492 |
|
|
if (coffsym != NULL \
|
| 493 |
|
|
&& coffsym->native->u.syment.n_scnum == 0) \
|
| 494 |
|
|
cache_ptr->addend = - coffsym->native->u.syment.n_value; \
|
| 495 |
|
|
else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
|
| 496 |
|
|
&& ptr->section != NULL) \
|
| 497 |
|
|
cache_ptr->addend = - (ptr->section->vma + ptr->value); \
|
| 498 |
|
|
else \
|
| 499 |
|
|
cache_ptr->addend = 0; \
|
| 500 |
|
|
if (ptr && howto_table[reloc.r_type].pc_relative) \
|
| 501 |
|
|
cache_ptr->addend += asect->vma; \
|
| 502 |
|
|
}
|
| 503 |
|
|
|
| 504 |
|
|
/* We use the special COFF backend linker. For normal AMD64 COFF, we
|
| 505 |
|
|
can use the generic relocate_section routine. For PE, we need our
|
| 506 |
|
|
own routine. */
|
| 507 |
|
|
|
| 508 |
|
|
#if !defined(COFF_WITH_PE)
|
| 509 |
|
|
|
| 510 |
|
|
#define coff_relocate_section _bfd_coff_generic_relocate_section
|
| 511 |
|
|
|
| 512 |
|
|
#else /* COFF_WITH_PE */
|
| 513 |
|
|
|
| 514 |
|
|
/* The PE relocate section routine. The only difference between this
|
| 515 |
|
|
and the regular routine is that we don't want to do anything for a
|
| 516 |
|
|
relocatable link. */
|
| 517 |
|
|
|
| 518 |
|
|
static bfd_boolean
|
| 519 |
|
|
coff_pe_amd64_relocate_section (bfd *output_bfd,
|
| 520 |
|
|
struct bfd_link_info *info,
|
| 521 |
|
|
bfd *input_bfd,
|
| 522 |
|
|
asection *input_section,
|
| 523 |
|
|
bfd_byte *contents,
|
| 524 |
|
|
struct internal_reloc *relocs,
|
| 525 |
|
|
struct internal_syment *syms,
|
| 526 |
|
|
asection **sections)
|
| 527 |
|
|
{
|
| 528 |
|
|
if (info->relocatable)
|
| 529 |
|
|
return TRUE;
|
| 530 |
|
|
|
| 531 |
|
|
return _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd,input_section, contents,relocs, syms, sections);
|
| 532 |
|
|
}
|
| 533 |
|
|
|
| 534 |
|
|
#define coff_relocate_section coff_pe_amd64_relocate_section
|
| 535 |
|
|
|
| 536 |
|
|
#endif /* COFF_WITH_PE */
|
| 537 |
|
|
|
| 538 |
|
|
/* Convert an rtype to howto for the COFF backend linker. */
|
| 539 |
|
|
|
| 540 |
|
|
static reloc_howto_type *
|
| 541 |
|
|
coff_amd64_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
|
| 542 |
|
|
asection *sec,
|
| 543 |
|
|
struct internal_reloc *rel,
|
| 544 |
|
|
struct coff_link_hash_entry *h,
|
| 545 |
|
|
struct internal_syment *sym,
|
| 546 |
|
|
bfd_vma *addendp)
|
| 547 |
|
|
{
|
| 548 |
|
|
reloc_howto_type *howto;
|
| 549 |
|
|
|
| 550 |
|
|
if (rel->r_type >= ARRAY_SIZE (howto_table))
|
| 551 |
|
|
{
|
| 552 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 553 |
|
|
return NULL;
|
| 554 |
|
|
}
|
| 555 |
|
|
howto = howto_table + rel->r_type;
|
| 556 |
|
|
|
| 557 |
|
|
#if defined(COFF_WITH_PE)
|
| 558 |
|
|
/* Cancel out code in _bfd_coff_generic_relocate_section. */
|
| 559 |
|
|
*addendp = 0;
|
| 560 |
|
|
if (rel->r_type >= R_AMD64_PCRLONG_1 && rel->r_type <= R_AMD64_PCRLONG_5)
|
| 561 |
|
|
{
|
| 562 |
|
|
*addendp -= (bfd_vma)(rel->r_type - R_AMD64_PCRLONG);
|
| 563 |
|
|
rel->r_type = R_AMD64_PCRLONG;
|
| 564 |
|
|
}
|
| 565 |
|
|
#endif
|
| 566 |
|
|
|
| 567 |
|
|
if (howto->pc_relative)
|
| 568 |
|
|
*addendp += sec->vma;
|
| 569 |
|
|
|
| 570 |
|
|
if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
|
| 571 |
|
|
{
|
| 572 |
|
|
/* This is a common symbol. The section contents include the
|
| 573 |
|
|
size (sym->n_value) as an addend. The relocate_section
|
| 574 |
|
|
function will be adding in the final value of the symbol. We
|
| 575 |
|
|
need to subtract out the current size in order to get the
|
| 576 |
|
|
correct result. */
|
| 577 |
|
|
BFD_ASSERT (h != NULL);
|
| 578 |
|
|
|
| 579 |
|
|
#if !defined(COFF_WITH_PE)
|
| 580 |
|
|
/* I think we *do* want to bypass this. If we don't, I have
|
| 581 |
|
|
seen some data parameters get the wrong relocation address.
|
| 582 |
|
|
If I link two versions with and without this section bypassed
|
| 583 |
|
|
and then do a binary comparison, the addresses which are
|
| 584 |
|
|
different can be looked up in the map. The case in which
|
| 585 |
|
|
this section has been bypassed has addresses which correspond
|
| 586 |
|
|
to values I can find in the map. */
|
| 587 |
|
|
*addendp -= sym->n_value;
|
| 588 |
|
|
#endif
|
| 589 |
|
|
}
|
| 590 |
|
|
|
| 591 |
|
|
#if !defined(COFF_WITH_PE)
|
| 592 |
|
|
/* If the output symbol is common (in which case this must be a
|
| 593 |
|
|
relocatable link), we need to add in the final size of the
|
| 594 |
|
|
common symbol. */
|
| 595 |
|
|
if (h != NULL && h->root.type == bfd_link_hash_common)
|
| 596 |
|
|
*addendp += h->root.u.c.size;
|
| 597 |
|
|
#endif
|
| 598 |
|
|
|
| 599 |
|
|
#if defined(COFF_WITH_PE)
|
| 600 |
|
|
if (howto->pc_relative)
|
| 601 |
|
|
{
|
| 602 |
|
|
*addendp -= 4;
|
| 603 |
|
|
|
| 604 |
|
|
/* If the symbol is defined, then the generic code is going to
|
| 605 |
|
|
add back the symbol value in order to cancel out an
|
| 606 |
|
|
adjustment it made to the addend. However, we set the addend
|
| 607 |
|
|
to 0 at the start of this function. We need to adjust here,
|
| 608 |
|
|
to avoid the adjustment the generic code will make. FIXME:
|
| 609 |
|
|
This is getting a bit hackish. */
|
| 610 |
|
|
if (sym != NULL && sym->n_scnum != 0)
|
| 611 |
|
|
*addendp -= sym->n_value;
|
| 612 |
|
|
}
|
| 613 |
|
|
|
| 614 |
|
|
if (rel->r_type == R_AMD64_IMAGEBASE
|
| 615 |
|
|
&& (bfd_get_flavour (sec->output_section->owner) == bfd_target_coff_flavour))
|
| 616 |
|
|
*addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase;
|
| 617 |
|
|
|
| 618 |
|
|
if (rel->r_type == R_AMD64_SECREL)
|
| 619 |
|
|
{
|
| 620 |
|
|
bfd_vma osect_vma;
|
| 621 |
|
|
|
| 622 |
166 |
khays |
if (h && (h->root.type == bfd_link_hash_defined
|
| 623 |
|
|
|| h->root.type == bfd_link_hash_defweak))
|
| 624 |
14 |
khays |
osect_vma = h->root.u.def.section->output_section->vma;
|
| 625 |
|
|
else
|
| 626 |
|
|
{
|
| 627 |
|
|
asection *s;
|
| 628 |
|
|
int i;
|
| 629 |
|
|
|
| 630 |
|
|
/* Sigh, the only way to get the section to offset against
|
| 631 |
|
|
is to find it the hard way. */
|
| 632 |
|
|
for (s = abfd->sections, i = 1; i < sym->n_scnum; i++)
|
| 633 |
|
|
s = s->next;
|
| 634 |
|
|
|
| 635 |
|
|
osect_vma = s->output_section->vma;
|
| 636 |
|
|
}
|
| 637 |
|
|
|
| 638 |
|
|
*addendp -= osect_vma;
|
| 639 |
|
|
}
|
| 640 |
|
|
#endif
|
| 641 |
|
|
|
| 642 |
|
|
return howto;
|
| 643 |
|
|
}
|
| 644 |
|
|
|
| 645 |
|
|
#define coff_bfd_reloc_type_lookup coff_amd64_reloc_type_lookup
|
| 646 |
|
|
#define coff_bfd_reloc_name_lookup coff_amd64_reloc_name_lookup
|
| 647 |
|
|
|
| 648 |
|
|
static reloc_howto_type *
|
| 649 |
|
|
coff_amd64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code)
|
| 650 |
|
|
{
|
| 651 |
|
|
switch (code)
|
| 652 |
|
|
{
|
| 653 |
|
|
case BFD_RELOC_RVA:
|
| 654 |
|
|
return howto_table + R_AMD64_IMAGEBASE;
|
| 655 |
|
|
case BFD_RELOC_32:
|
| 656 |
|
|
return howto_table + R_AMD64_DIR32;
|
| 657 |
|
|
case BFD_RELOC_64:
|
| 658 |
|
|
return howto_table + R_AMD64_DIR64;
|
| 659 |
|
|
case BFD_RELOC_64_PCREL:
|
| 660 |
|
|
#ifndef DONT_EXTEND_AMD64
|
| 661 |
|
|
return howto_table + R_AMD64_PCRQUAD;
|
| 662 |
|
|
#else
|
| 663 |
|
|
/* Fall through. */
|
| 664 |
|
|
#endif
|
| 665 |
|
|
case BFD_RELOC_32_PCREL:
|
| 666 |
|
|
return howto_table + R_AMD64_PCRLONG;
|
| 667 |
|
|
case BFD_RELOC_X86_64_32S:
|
| 668 |
|
|
return howto_table + R_RELLONG;
|
| 669 |
|
|
case BFD_RELOC_16:
|
| 670 |
|
|
return howto_table + R_RELWORD;
|
| 671 |
|
|
case BFD_RELOC_16_PCREL:
|
| 672 |
|
|
return howto_table + R_PCRWORD;
|
| 673 |
|
|
case BFD_RELOC_8:
|
| 674 |
|
|
return howto_table + R_RELBYTE;
|
| 675 |
|
|
case BFD_RELOC_8_PCREL:
|
| 676 |
|
|
return howto_table + R_PCRBYTE;
|
| 677 |
|
|
#if defined(COFF_WITH_PE)
|
| 678 |
|
|
case BFD_RELOC_32_SECREL:
|
| 679 |
|
|
return howto_table + R_AMD64_SECREL;
|
| 680 |
|
|
#endif
|
| 681 |
|
|
default:
|
| 682 |
|
|
BFD_FAIL ();
|
| 683 |
|
|
return 0;
|
| 684 |
|
|
}
|
| 685 |
|
|
}
|
| 686 |
|
|
|
| 687 |
|
|
static reloc_howto_type *
|
| 688 |
|
|
coff_amd64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 689 |
|
|
const char *r_name)
|
| 690 |
|
|
{
|
| 691 |
|
|
unsigned int i;
|
| 692 |
|
|
|
| 693 |
|
|
for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
|
| 694 |
|
|
if (howto_table[i].name != NULL
|
| 695 |
|
|
&& strcasecmp (howto_table[i].name, r_name) == 0)
|
| 696 |
|
|
return &howto_table[i];
|
| 697 |
|
|
|
| 698 |
|
|
return NULL;
|
| 699 |
|
|
}
|
| 700 |
|
|
|
| 701 |
|
|
#define coff_rtype_to_howto coff_amd64_rtype_to_howto
|
| 702 |
|
|
|
| 703 |
|
|
#ifdef TARGET_UNDERSCORE
|
| 704 |
|
|
|
| 705 |
|
|
/* If amd64 gcc uses underscores for symbol names, then it does not use
|
| 706 |
|
|
a leading dot for local labels, so if TARGET_UNDERSCORE is defined
|
| 707 |
|
|
we treat all symbols starting with L as local. */
|
| 708 |
|
|
|
| 709 |
|
|
static bfd_boolean
|
| 710 |
|
|
coff_amd64_is_local_label_name (bfd *abfd, const char *name)
|
| 711 |
|
|
{
|
| 712 |
|
|
if (name[0] == 'L')
|
| 713 |
|
|
return TRUE;
|
| 714 |
|
|
|
| 715 |
|
|
return _bfd_coff_is_local_label_name (abfd, name);
|
| 716 |
|
|
}
|
| 717 |
|
|
|
| 718 |
|
|
#define coff_bfd_is_local_label_name coff_amd64_is_local_label_name
|
| 719 |
|
|
|
| 720 |
|
|
#endif /* TARGET_UNDERSCORE */
|
| 721 |
|
|
|
| 722 |
|
|
#ifndef bfd_pe_print_pdata
|
| 723 |
|
|
#define bfd_pe_print_pdata NULL
|
| 724 |
|
|
#endif
|
| 725 |
|
|
|
| 726 |
|
|
#include "coffcode.h"
|
| 727 |
|
|
|
| 728 |
|
|
#ifdef PE
|
| 729 |
|
|
#define amd64coff_object_p pe_bfd_object_p
|
| 730 |
|
|
#else
|
| 731 |
|
|
#define amd64coff_object_p coff_object_p
|
| 732 |
|
|
#endif
|
| 733 |
|
|
|
| 734 |
|
|
const bfd_target
|
| 735 |
|
|
#ifdef TARGET_SYM
|
| 736 |
|
|
TARGET_SYM =
|
| 737 |
|
|
#else
|
| 738 |
|
|
x86_64coff_vec =
|
| 739 |
|
|
#endif
|
| 740 |
|
|
{
|
| 741 |
|
|
#ifdef TARGET_NAME
|
| 742 |
|
|
TARGET_NAME,
|
| 743 |
|
|
#else
|
| 744 |
|
|
"coff-x86-64", /* Name. */
|
| 745 |
|
|
#endif
|
| 746 |
|
|
bfd_target_coff_flavour,
|
| 747 |
|
|
BFD_ENDIAN_LITTLE, /* Data byte order is little. */
|
| 748 |
|
|
BFD_ENDIAN_LITTLE, /* Header byte order is little. */
|
| 749 |
|
|
|
| 750 |
|
|
(HAS_RELOC | EXEC_P | /* Object flags. */
|
| 751 |
|
|
HAS_LINENO | HAS_DEBUG |
|
| 752 |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
| 753 |
|
|
|
| 754 |
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags. */
|
| 755 |
|
|
#if defined(COFF_WITH_PE)
|
| 756 |
|
|
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY
|
| 757 |
|
|
#endif
|
| 758 |
|
|
| SEC_CODE | SEC_DATA),
|
| 759 |
|
|
|
| 760 |
|
|
#ifdef TARGET_UNDERSCORE
|
| 761 |
|
|
TARGET_UNDERSCORE, /* Leading underscore. */
|
| 762 |
|
|
#else
|
| 763 |
|
|
0, /* Leading underscore. */
|
| 764 |
|
|
#endif
|
| 765 |
|
|
'/', /* Ar_pad_char. */
|
| 766 |
|
|
15, /* Ar_max_namelen. */
|
| 767 |
148 |
khays |
0, /* match priority. */
|
| 768 |
14 |
khays |
|
| 769 |
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
| 770 |
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
| 771 |
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data. */
|
| 772 |
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
| 773 |
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
| 774 |
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Hdrs. */
|
| 775 |
|
|
|
| 776 |
|
|
/* Note that we allow an object file to be treated as a core file as well. */
|
| 777 |
|
|
{ _bfd_dummy_target, amd64coff_object_p, /* BFD_check_format. */
|
| 778 |
|
|
bfd_generic_archive_p, amd64coff_object_p },
|
| 779 |
|
|
{ bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format. */
|
| 780 |
|
|
bfd_false },
|
| 781 |
|
|
{ bfd_false, coff_write_object_contents, /* bfd_write_contents. */
|
| 782 |
|
|
_bfd_write_archive_contents, bfd_false },
|
| 783 |
|
|
|
| 784 |
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
| 785 |
|
|
BFD_JUMP_TABLE_COPY (coff),
|
| 786 |
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
| 787 |
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
| 788 |
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
| 789 |
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
| 790 |
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
| 791 |
|
|
BFD_JUMP_TABLE_LINK (coff),
|
| 792 |
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
| 793 |
|
|
|
| 794 |
|
|
NULL,
|
| 795 |
|
|
|
| 796 |
|
|
COFF_SWAP_TABLE
|
| 797 |
|
|
};
|
