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14 |
khays |
/* BFD back-end for MIPS Extended-Coff files.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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148 |
khays |
2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2011
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14 |
khays |
Free Software Foundation, Inc.
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Original version by Per Bothner.
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Full support added by Ian Lance Taylor, ian@cygnus.com.
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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 "bfdlink.h"
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#include "libbfd.h"
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#include "coff/internal.h"
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#include "coff/sym.h"
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#include "coff/symconst.h"
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#include "coff/ecoff.h"
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#include "coff/mips.h"
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#include "libcoff.h"
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#include "libecoff.h"
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/* Prototypes for static functions. */
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static bfd_boolean mips_ecoff_bad_format_hook
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PARAMS ((bfd *abfd, PTR filehdr));
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static void mips_ecoff_swap_reloc_in
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PARAMS ((bfd *, PTR, struct internal_reloc *));
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static void mips_ecoff_swap_reloc_out
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PARAMS ((bfd *, const struct internal_reloc *, PTR));
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static void mips_adjust_reloc_in
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PARAMS ((bfd *, const struct internal_reloc *, arelent *));
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static void mips_adjust_reloc_out
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PARAMS ((bfd *, const arelent *, struct internal_reloc *));
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static bfd_reloc_status_type mips_generic_reloc
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PARAMS ((bfd *abfd, arelent *reloc, asymbol *symbol, PTR data,
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asection *section, bfd *output_bfd, char **error));
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static bfd_reloc_status_type mips_refhi_reloc
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PARAMS ((bfd *abfd, arelent *reloc, asymbol *symbol, PTR data,
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asection *section, bfd *output_bfd, char **error));
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static bfd_reloc_status_type mips_reflo_reloc
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PARAMS ((bfd *abfd, arelent *reloc, asymbol *symbol, PTR data,
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asection *section, bfd *output_bfd, char **error));
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static bfd_reloc_status_type mips_gprel_reloc
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PARAMS ((bfd *abfd, arelent *reloc, asymbol *symbol, PTR data,
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asection *section, bfd *output_bfd, char **error));
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static void mips_relocate_hi
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PARAMS ((struct internal_reloc *refhi, struct internal_reloc *reflo,
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bfd *input_bfd, asection *input_section, bfd_byte *contents,
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bfd_vma relocation));
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static bfd_boolean mips_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, PTR));
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static reloc_howto_type *mips_bfd_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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/* ECOFF has COFF sections, but the debugging information is stored in
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a completely different format. ECOFF targets use some of the
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swapping routines from coffswap.h, and some of the generic COFF
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routines in coffgen.c, but, unlike the real COFF targets, do not
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use coffcode.h itself.
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Get the generic COFF swapping routines, except for the reloc,
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symbol, and lineno ones. Give them ECOFF names. */
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#define MIPSECOFF
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#define NO_COFF_RELOCS
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#define NO_COFF_SYMBOLS
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#define NO_COFF_LINENOS
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#define coff_swap_filehdr_in mips_ecoff_swap_filehdr_in
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#define coff_swap_filehdr_out mips_ecoff_swap_filehdr_out
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#define coff_swap_aouthdr_in mips_ecoff_swap_aouthdr_in
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#define coff_swap_aouthdr_out mips_ecoff_swap_aouthdr_out
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#define coff_swap_scnhdr_in mips_ecoff_swap_scnhdr_in
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#define coff_swap_scnhdr_out mips_ecoff_swap_scnhdr_out
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#include "coffswap.h"
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/* Get the ECOFF swapping routines. */
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#define ECOFF_32
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#include "ecoffswap.h"
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/* How to process the various relocs types. */
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static reloc_howto_type mips_howto_table[] =
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{
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/* Reloc type 0 is ignored. The reloc reading code ensures that
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this is a reference to the .abs section, which will cause
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bfd_perform_relocation to do nothing. */
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HOWTO (MIPS_R_IGNORE, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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0, /* special_function */
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"IGNORE", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 16 bit reference to a symbol, normally from a data section. */
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HOWTO (MIPS_R_REFHALF, /* 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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mips_generic_reloc, /* special_function */
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"REFHALF", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 32 bit reference to a symbol, normally from a data section. */
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HOWTO (MIPS_R_REFWORD, /* 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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mips_generic_reloc, /* special_function */
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"REFWORD", /* 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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/* A 26 bit absolute jump address. */
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HOWTO (MIPS_R_JMPADDR, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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/* This needs complex overflow
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detection, because the upper four
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bits must match the PC. */
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mips_generic_reloc, /* special_function */
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"JMPADDR", /* name */
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TRUE, /* partial_inplace */
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0x3ffffff, /* src_mask */
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0x3ffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* The high 16 bits of a symbol value. Handled by the function
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mips_refhi_reloc. */
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HOWTO (MIPS_R_REFHI, /* type */
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16, /* rightshift */
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2, /* 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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mips_refhi_reloc, /* special_function */
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"REFHI", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* The low 16 bits of a symbol value. */
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HOWTO (MIPS_R_REFLO, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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mips_reflo_reloc, /* special_function */
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"REFLO", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A reference to an offset from the gp register. Handled by the
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function mips_gprel_reloc. */
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HOWTO (MIPS_R_GPREL, /* type */
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0, /* rightshift */
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2, /* 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_signed, /* complain_on_overflow */
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mips_gprel_reloc, /* special_function */
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"GPREL", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A reference to a literal using an offset from the gp register.
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Handled by the function mips_gprel_reloc. */
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HOWTO (MIPS_R_LITERAL, /* type */
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0, /* rightshift */
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2, /* 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_signed, /* complain_on_overflow */
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mips_gprel_reloc, /* special_function */
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"LITERAL", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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EMPTY_HOWTO (8),
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EMPTY_HOWTO (9),
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EMPTY_HOWTO (10),
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EMPTY_HOWTO (11),
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/* FIXME: This relocation is used (internally only) to represent branches
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when assembling. It should never appear in output files, and
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be removed. (It used to be used for embedded-PIC support.) */
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HOWTO (MIPS_R_PCREL16, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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mips_generic_reloc, /* special_function */
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"PCREL16", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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};
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#define MIPS_HOWTO_COUNT \
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(sizeof mips_howto_table / sizeof mips_howto_table[0])
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/* See whether the magic number matches. */
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static bfd_boolean
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mips_ecoff_bad_format_hook (abfd, filehdr)
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bfd *abfd;
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PTR filehdr;
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{
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| 260 |
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struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
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| 262 |
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switch (internal_f->f_magic)
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{
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| 264 |
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case MIPS_MAGIC_1:
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/* I don't know what endianness this implies. */
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return TRUE;
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| 268 |
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case MIPS_MAGIC_BIG:
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case MIPS_MAGIC_BIG2:
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case MIPS_MAGIC_BIG3:
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return bfd_big_endian (abfd);
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| 273 |
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case MIPS_MAGIC_LITTLE:
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case MIPS_MAGIC_LITTLE2:
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case MIPS_MAGIC_LITTLE3:
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| 276 |
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return bfd_little_endian (abfd);
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| 277 |
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| 278 |
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default:
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| 279 |
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return FALSE;
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| 280 |
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}
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| 281 |
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}
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| 282 |
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|
| 283 |
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/* Reloc handling. MIPS ECOFF relocs are packed into 8 bytes in
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| 284 |
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external form. They use a bit which indicates whether the symbol
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| 285 |
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is external. */
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| 286 |
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| 287 |
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/* Swap a reloc in. */
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| 288 |
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|
| 289 |
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static void
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| 290 |
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mips_ecoff_swap_reloc_in (abfd, ext_ptr, intern)
|
| 291 |
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bfd *abfd;
|
| 292 |
|
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PTR ext_ptr;
|
| 293 |
|
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struct internal_reloc *intern;
|
| 294 |
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{
|
| 295 |
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const RELOC *ext = (RELOC *) ext_ptr;
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| 296 |
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|
| 297 |
|
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intern->r_vaddr = H_GET_32 (abfd, ext->r_vaddr);
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| 298 |
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if (bfd_header_big_endian (abfd))
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| 299 |
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{
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| 300 |
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intern->r_symndx = (((int) ext->r_bits[0]
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<< RELOC_BITS0_SYMNDX_SH_LEFT_BIG)
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| ((int) ext->r_bits[1]
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<< RELOC_BITS1_SYMNDX_SH_LEFT_BIG)
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| ((int) ext->r_bits[2]
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<< RELOC_BITS2_SYMNDX_SH_LEFT_BIG));
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| 306 |
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intern->r_type = ((ext->r_bits[3] & RELOC_BITS3_TYPE_BIG)
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>> RELOC_BITS3_TYPE_SH_BIG);
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intern->r_extern = (ext->r_bits[3] & RELOC_BITS3_EXTERN_BIG) != 0;
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}
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| 310 |
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else
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| 311 |
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{
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| 312 |
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intern->r_symndx = (((int) ext->r_bits[0]
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| 313 |
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<< RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE)
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| 314 |
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| ((int) ext->r_bits[1]
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| 315 |
|
|
<< RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE)
|
| 316 |
|
|
| ((int) ext->r_bits[2]
|
| 317 |
|
|
<< RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE));
|
| 318 |
|
|
intern->r_type = (((ext->r_bits[3] & RELOC_BITS3_TYPE_LITTLE)
|
| 319 |
|
|
>> RELOC_BITS3_TYPE_SH_LITTLE)
|
| 320 |
|
|
| ((ext->r_bits[3] & RELOC_BITS3_TYPEHI_LITTLE)
|
| 321 |
|
|
<< RELOC_BITS3_TYPEHI_SH_LITTLE));
|
| 322 |
|
|
intern->r_extern = (ext->r_bits[3] & RELOC_BITS3_EXTERN_LITTLE) != 0;
|
| 323 |
|
|
}
|
| 324 |
|
|
}
|
| 325 |
|
|
|
| 326 |
|
|
/* Swap a reloc out. */
|
| 327 |
|
|
|
| 328 |
|
|
static void
|
| 329 |
|
|
mips_ecoff_swap_reloc_out (abfd, intern, dst)
|
| 330 |
|
|
bfd *abfd;
|
| 331 |
|
|
const struct internal_reloc *intern;
|
| 332 |
|
|
PTR dst;
|
| 333 |
|
|
{
|
| 334 |
|
|
RELOC *ext = (RELOC *) dst;
|
| 335 |
|
|
long r_symndx;
|
| 336 |
|
|
|
| 337 |
|
|
BFD_ASSERT (intern->r_extern
|
| 338 |
|
|
|| (intern->r_symndx >= 0 && intern->r_symndx <= 12));
|
| 339 |
|
|
|
| 340 |
|
|
r_symndx = intern->r_symndx;
|
| 341 |
|
|
|
| 342 |
|
|
H_PUT_32 (abfd, intern->r_vaddr, ext->r_vaddr);
|
| 343 |
|
|
if (bfd_header_big_endian (abfd))
|
| 344 |
|
|
{
|
| 345 |
|
|
ext->r_bits[0] = r_symndx >> RELOC_BITS0_SYMNDX_SH_LEFT_BIG;
|
| 346 |
|
|
ext->r_bits[1] = r_symndx >> RELOC_BITS1_SYMNDX_SH_LEFT_BIG;
|
| 347 |
|
|
ext->r_bits[2] = r_symndx >> RELOC_BITS2_SYMNDX_SH_LEFT_BIG;
|
| 348 |
|
|
ext->r_bits[3] = (((intern->r_type << RELOC_BITS3_TYPE_SH_BIG)
|
| 349 |
|
|
& RELOC_BITS3_TYPE_BIG)
|
| 350 |
|
|
| (intern->r_extern ? RELOC_BITS3_EXTERN_BIG : 0));
|
| 351 |
|
|
}
|
| 352 |
|
|
else
|
| 353 |
|
|
{
|
| 354 |
|
|
ext->r_bits[0] = r_symndx >> RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE;
|
| 355 |
|
|
ext->r_bits[1] = r_symndx >> RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE;
|
| 356 |
|
|
ext->r_bits[2] = r_symndx >> RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE;
|
| 357 |
|
|
ext->r_bits[3] = (((intern->r_type << RELOC_BITS3_TYPE_SH_LITTLE)
|
| 358 |
|
|
& RELOC_BITS3_TYPE_LITTLE)
|
| 359 |
|
|
| ((intern->r_type >> RELOC_BITS3_TYPEHI_SH_LITTLE
|
| 360 |
|
|
& RELOC_BITS3_TYPEHI_LITTLE))
|
| 361 |
|
|
| (intern->r_extern ? RELOC_BITS3_EXTERN_LITTLE : 0));
|
| 362 |
|
|
}
|
| 363 |
|
|
}
|
| 364 |
|
|
|
| 365 |
|
|
/* Finish canonicalizing a reloc. Part of this is generic to all
|
| 366 |
|
|
ECOFF targets, and that part is in ecoff.c. The rest is done in
|
| 367 |
|
|
this backend routine. It must fill in the howto field. */
|
| 368 |
|
|
|
| 369 |
|
|
static void
|
| 370 |
|
|
mips_adjust_reloc_in (abfd, intern, rptr)
|
| 371 |
|
|
bfd *abfd;
|
| 372 |
|
|
const struct internal_reloc *intern;
|
| 373 |
|
|
arelent *rptr;
|
| 374 |
|
|
{
|
| 375 |
|
|
if (intern->r_type > MIPS_R_PCREL16)
|
| 376 |
|
|
abort ();
|
| 377 |
|
|
|
| 378 |
|
|
if (! intern->r_extern
|
| 379 |
|
|
&& (intern->r_type == MIPS_R_GPREL
|
| 380 |
|
|
|| intern->r_type == MIPS_R_LITERAL))
|
| 381 |
|
|
rptr->addend += ecoff_data (abfd)->gp;
|
| 382 |
|
|
|
| 383 |
|
|
/* If the type is MIPS_R_IGNORE, make sure this is a reference to
|
| 384 |
|
|
the absolute section so that the reloc is ignored. */
|
| 385 |
|
|
if (intern->r_type == MIPS_R_IGNORE)
|
| 386 |
|
|
rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
|
| 387 |
|
|
|
| 388 |
|
|
rptr->howto = &mips_howto_table[intern->r_type];
|
| 389 |
|
|
}
|
| 390 |
|
|
|
| 391 |
|
|
/* Make any adjustments needed to a reloc before writing it out. None
|
| 392 |
|
|
are needed for MIPS. */
|
| 393 |
|
|
|
| 394 |
|
|
static void
|
| 395 |
|
|
mips_adjust_reloc_out (abfd, rel, intern)
|
| 396 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
| 397 |
|
|
const arelent *rel ATTRIBUTE_UNUSED;
|
| 398 |
|
|
struct internal_reloc *intern ATTRIBUTE_UNUSED;
|
| 399 |
|
|
{
|
| 400 |
|
|
}
|
| 401 |
|
|
|
| 402 |
|
|
/* ECOFF relocs are either against external symbols, or against
|
| 403 |
|
|
sections. If we are producing relocatable output, and the reloc
|
| 404 |
|
|
is against an external symbol, and nothing has given us any
|
| 405 |
|
|
additional addend, the resulting reloc will also be against the
|
| 406 |
|
|
same symbol. In such a case, we don't want to change anything
|
| 407 |
|
|
about the way the reloc is handled, since it will all be done at
|
| 408 |
|
|
final link time. Rather than put special case code into
|
| 409 |
|
|
bfd_perform_relocation, all the reloc types use this howto
|
| 410 |
|
|
function. It just short circuits the reloc if producing
|
| 411 |
|
|
relocatable output against an external symbol. */
|
| 412 |
|
|
|
| 413 |
|
|
static bfd_reloc_status_type
|
| 414 |
|
|
mips_generic_reloc (abfd,
|
| 415 |
|
|
reloc_entry,
|
| 416 |
|
|
symbol,
|
| 417 |
|
|
data,
|
| 418 |
|
|
input_section,
|
| 419 |
|
|
output_bfd,
|
| 420 |
|
|
error_message)
|
| 421 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
| 422 |
|
|
arelent *reloc_entry;
|
| 423 |
|
|
asymbol *symbol;
|
| 424 |
|
|
PTR data ATTRIBUTE_UNUSED;
|
| 425 |
|
|
asection *input_section;
|
| 426 |
|
|
bfd *output_bfd;
|
| 427 |
|
|
char **error_message ATTRIBUTE_UNUSED;
|
| 428 |
|
|
{
|
| 429 |
|
|
if (output_bfd != (bfd *) NULL
|
| 430 |
|
|
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
| 431 |
|
|
&& reloc_entry->addend == 0)
|
| 432 |
|
|
{
|
| 433 |
|
|
reloc_entry->address += input_section->output_offset;
|
| 434 |
|
|
return bfd_reloc_ok;
|
| 435 |
|
|
}
|
| 436 |
|
|
|
| 437 |
|
|
return bfd_reloc_continue;
|
| 438 |
|
|
}
|
| 439 |
|
|
|
| 440 |
|
|
/* Do a REFHI relocation. This has to be done in combination with a
|
| 441 |
|
|
REFLO reloc, because there is a carry from the REFLO to the REFHI.
|
| 442 |
|
|
Here we just save the information we need; we do the actual
|
| 443 |
|
|
relocation when we see the REFLO. MIPS ECOFF requires that the
|
| 444 |
|
|
REFLO immediately follow the REFHI. As a GNU extension, we permit
|
| 445 |
|
|
an arbitrary number of HI relocs to be associated with a single LO
|
| 446 |
|
|
reloc. This extension permits gcc to output the HI and LO relocs
|
| 447 |
|
|
itself. */
|
| 448 |
|
|
|
| 449 |
|
|
struct mips_hi
|
| 450 |
|
|
{
|
| 451 |
|
|
struct mips_hi *next;
|
| 452 |
|
|
bfd_byte *addr;
|
| 453 |
|
|
bfd_vma addend;
|
| 454 |
|
|
};
|
| 455 |
|
|
|
| 456 |
|
|
/* FIXME: This should not be a static variable. */
|
| 457 |
|
|
|
| 458 |
|
|
static struct mips_hi *mips_refhi_list;
|
| 459 |
|
|
|
| 460 |
|
|
static bfd_reloc_status_type
|
| 461 |
|
|
mips_refhi_reloc (abfd,
|
| 462 |
|
|
reloc_entry,
|
| 463 |
|
|
symbol,
|
| 464 |
|
|
data,
|
| 465 |
|
|
input_section,
|
| 466 |
|
|
output_bfd,
|
| 467 |
|
|
error_message)
|
| 468 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
| 469 |
|
|
arelent *reloc_entry;
|
| 470 |
|
|
asymbol *symbol;
|
| 471 |
|
|
PTR data;
|
| 472 |
|
|
asection *input_section;
|
| 473 |
|
|
bfd *output_bfd;
|
| 474 |
|
|
char **error_message ATTRIBUTE_UNUSED;
|
| 475 |
|
|
{
|
| 476 |
|
|
bfd_reloc_status_type ret;
|
| 477 |
|
|
bfd_vma relocation;
|
| 478 |
|
|
struct mips_hi *n;
|
| 479 |
|
|
|
| 480 |
|
|
/* If we're relocating, and this an external symbol, we don't want
|
| 481 |
|
|
to change anything. */
|
| 482 |
|
|
if (output_bfd != (bfd *) NULL
|
| 483 |
|
|
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
| 484 |
|
|
&& reloc_entry->addend == 0)
|
| 485 |
|
|
{
|
| 486 |
|
|
reloc_entry->address += input_section->output_offset;
|
| 487 |
|
|
return bfd_reloc_ok;
|
| 488 |
|
|
}
|
| 489 |
|
|
|
| 490 |
|
|
ret = bfd_reloc_ok;
|
| 491 |
|
|
if (bfd_is_und_section (symbol->section)
|
| 492 |
|
|
&& output_bfd == (bfd *) NULL)
|
| 493 |
|
|
ret = bfd_reloc_undefined;
|
| 494 |
|
|
|
| 495 |
|
|
if (bfd_is_com_section (symbol->section))
|
| 496 |
|
|
relocation = 0;
|
| 497 |
|
|
else
|
| 498 |
|
|
relocation = symbol->value;
|
| 499 |
|
|
|
| 500 |
|
|
relocation += symbol->section->output_section->vma;
|
| 501 |
|
|
relocation += symbol->section->output_offset;
|
| 502 |
|
|
relocation += reloc_entry->addend;
|
| 503 |
|
|
|
| 504 |
|
|
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
|
| 505 |
|
|
return bfd_reloc_outofrange;
|
| 506 |
|
|
|
| 507 |
|
|
/* Save the information, and let REFLO do the actual relocation. */
|
| 508 |
|
|
n = (struct mips_hi *) bfd_malloc ((bfd_size_type) sizeof *n);
|
| 509 |
|
|
if (n == NULL)
|
| 510 |
|
|
return bfd_reloc_outofrange;
|
| 511 |
|
|
n->addr = (bfd_byte *) data + reloc_entry->address;
|
| 512 |
|
|
n->addend = relocation;
|
| 513 |
|
|
n->next = mips_refhi_list;
|
| 514 |
|
|
mips_refhi_list = n;
|
| 515 |
|
|
|
| 516 |
|
|
if (output_bfd != (bfd *) NULL)
|
| 517 |
|
|
reloc_entry->address += input_section->output_offset;
|
| 518 |
|
|
|
| 519 |
|
|
return ret;
|
| 520 |
|
|
}
|
| 521 |
|
|
|
| 522 |
|
|
/* Do a REFLO relocation. This is a straightforward 16 bit inplace
|
| 523 |
|
|
relocation; this function exists in order to do the REFHI
|
| 524 |
|
|
relocation described above. */
|
| 525 |
|
|
|
| 526 |
|
|
static bfd_reloc_status_type
|
| 527 |
|
|
mips_reflo_reloc (abfd,
|
| 528 |
|
|
reloc_entry,
|
| 529 |
|
|
symbol,
|
| 530 |
|
|
data,
|
| 531 |
|
|
input_section,
|
| 532 |
|
|
output_bfd,
|
| 533 |
|
|
error_message)
|
| 534 |
|
|
bfd *abfd;
|
| 535 |
|
|
arelent *reloc_entry;
|
| 536 |
|
|
asymbol *symbol;
|
| 537 |
|
|
PTR data;
|
| 538 |
|
|
asection *input_section;
|
| 539 |
|
|
bfd *output_bfd;
|
| 540 |
|
|
char **error_message;
|
| 541 |
|
|
{
|
| 542 |
|
|
if (mips_refhi_list != NULL)
|
| 543 |
|
|
{
|
| 544 |
|
|
struct mips_hi *l;
|
| 545 |
|
|
|
| 546 |
|
|
l = mips_refhi_list;
|
| 547 |
|
|
while (l != NULL)
|
| 548 |
|
|
{
|
| 549 |
|
|
unsigned long insn;
|
| 550 |
|
|
unsigned long val;
|
| 551 |
|
|
unsigned long vallo;
|
| 552 |
|
|
struct mips_hi *next;
|
| 553 |
|
|
|
| 554 |
|
|
/* Do the REFHI relocation. Note that we actually don't
|
| 555 |
|
|
need to know anything about the REFLO itself, except
|
| 556 |
|
|
where to find the low 16 bits of the addend needed by the
|
| 557 |
|
|
REFHI. */
|
| 558 |
|
|
insn = bfd_get_32 (abfd, l->addr);
|
| 559 |
|
|
vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address)
|
| 560 |
|
|
& 0xffff);
|
| 561 |
|
|
val = ((insn & 0xffff) << 16) + vallo;
|
| 562 |
|
|
val += l->addend;
|
| 563 |
|
|
|
| 564 |
|
|
/* The low order 16 bits are always treated as a signed
|
| 565 |
|
|
value. Therefore, a negative value in the low order bits
|
| 566 |
|
|
requires an adjustment in the high order bits. We need
|
| 567 |
|
|
to make this adjustment in two ways: once for the bits we
|
| 568 |
|
|
took from the data, and once for the bits we are putting
|
| 569 |
|
|
back in to the data. */
|
| 570 |
|
|
if ((vallo & 0x8000) != 0)
|
| 571 |
|
|
val -= 0x10000;
|
| 572 |
|
|
if ((val & 0x8000) != 0)
|
| 573 |
|
|
val += 0x10000;
|
| 574 |
|
|
|
| 575 |
|
|
insn = (insn &~ (unsigned) 0xffff) | ((val >> 16) & 0xffff);
|
| 576 |
|
|
bfd_put_32 (abfd, (bfd_vma) insn, l->addr);
|
| 577 |
|
|
|
| 578 |
|
|
next = l->next;
|
| 579 |
|
|
free (l);
|
| 580 |
|
|
l = next;
|
| 581 |
|
|
}
|
| 582 |
|
|
|
| 583 |
|
|
mips_refhi_list = NULL;
|
| 584 |
|
|
}
|
| 585 |
|
|
|
| 586 |
|
|
/* Now do the REFLO reloc in the usual way. */
|
| 587 |
|
|
return mips_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 588 |
|
|
input_section, output_bfd, error_message);
|
| 589 |
|
|
}
|
| 590 |
|
|
|
| 591 |
|
|
/* Do a GPREL relocation. This is a 16 bit value which must become
|
| 592 |
|
|
the offset from the gp register. */
|
| 593 |
|
|
|
| 594 |
|
|
static bfd_reloc_status_type
|
| 595 |
|
|
mips_gprel_reloc (abfd,
|
| 596 |
|
|
reloc_entry,
|
| 597 |
|
|
symbol,
|
| 598 |
|
|
data,
|
| 599 |
|
|
input_section,
|
| 600 |
|
|
output_bfd,
|
| 601 |
|
|
error_message)
|
| 602 |
|
|
bfd *abfd;
|
| 603 |
|
|
arelent *reloc_entry;
|
| 604 |
|
|
asymbol *symbol;
|
| 605 |
|
|
PTR data;
|
| 606 |
|
|
asection *input_section;
|
| 607 |
|
|
bfd *output_bfd;
|
| 608 |
|
|
char **error_message;
|
| 609 |
|
|
{
|
| 610 |
|
|
bfd_boolean relocatable;
|
| 611 |
|
|
bfd_vma gp;
|
| 612 |
|
|
bfd_vma relocation;
|
| 613 |
|
|
unsigned long val;
|
| 614 |
|
|
unsigned long insn;
|
| 615 |
|
|
|
| 616 |
|
|
/* If we're relocating, and this is an external symbol with no
|
| 617 |
|
|
addend, we don't want to change anything. We will only have an
|
| 618 |
|
|
addend if this is a newly created reloc, not read from an ECOFF
|
| 619 |
|
|
file. */
|
| 620 |
|
|
if (output_bfd != (bfd *) NULL
|
| 621 |
|
|
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
| 622 |
|
|
&& reloc_entry->addend == 0)
|
| 623 |
|
|
{
|
| 624 |
|
|
reloc_entry->address += input_section->output_offset;
|
| 625 |
|
|
return bfd_reloc_ok;
|
| 626 |
|
|
}
|
| 627 |
|
|
|
| 628 |
|
|
if (output_bfd != (bfd *) NULL)
|
| 629 |
|
|
relocatable = TRUE;
|
| 630 |
|
|
else
|
| 631 |
|
|
{
|
| 632 |
|
|
relocatable = FALSE;
|
| 633 |
|
|
output_bfd = symbol->section->output_section->owner;
|
| 634 |
|
|
}
|
| 635 |
|
|
|
| 636 |
|
|
if (bfd_is_und_section (symbol->section) && ! relocatable)
|
| 637 |
|
|
return bfd_reloc_undefined;
|
| 638 |
|
|
|
| 639 |
|
|
/* We have to figure out the gp value, so that we can adjust the
|
| 640 |
|
|
symbol value correctly. We look up the symbol _gp in the output
|
| 641 |
|
|
BFD. If we can't find it, we're stuck. We cache it in the ECOFF
|
| 642 |
|
|
target data. We don't need to adjust the symbol value for an
|
| 643 |
|
|
external symbol if we are producing relocatable output. */
|
| 644 |
|
|
gp = _bfd_get_gp_value (output_bfd);
|
| 645 |
|
|
if (gp == 0
|
| 646 |
|
|
&& (! relocatable
|
| 647 |
|
|
|| (symbol->flags & BSF_SECTION_SYM) != 0))
|
| 648 |
|
|
{
|
| 649 |
|
|
if (relocatable)
|
| 650 |
|
|
{
|
| 651 |
|
|
/* Make up a value. */
|
| 652 |
|
|
gp = symbol->section->output_section->vma + 0x4000;
|
| 653 |
|
|
_bfd_set_gp_value (output_bfd, gp);
|
| 654 |
|
|
}
|
| 655 |
|
|
else
|
| 656 |
|
|
{
|
| 657 |
|
|
unsigned int count;
|
| 658 |
|
|
asymbol **sym;
|
| 659 |
|
|
unsigned int i;
|
| 660 |
|
|
|
| 661 |
|
|
count = bfd_get_symcount (output_bfd);
|
| 662 |
|
|
sym = bfd_get_outsymbols (output_bfd);
|
| 663 |
|
|
|
| 664 |
|
|
if (sym == (asymbol **) NULL)
|
| 665 |
|
|
i = count;
|
| 666 |
|
|
else
|
| 667 |
|
|
{
|
| 668 |
|
|
for (i = 0; i < count; i++, sym++)
|
| 669 |
|
|
{
|
| 670 |
|
|
register const char *name;
|
| 671 |
|
|
|
| 672 |
|
|
name = bfd_asymbol_name (*sym);
|
| 673 |
|
|
if (*name == '_' && strcmp (name, "_gp") == 0)
|
| 674 |
|
|
{
|
| 675 |
|
|
gp = bfd_asymbol_value (*sym);
|
| 676 |
|
|
_bfd_set_gp_value (output_bfd, gp);
|
| 677 |
|
|
break;
|
| 678 |
|
|
}
|
| 679 |
|
|
}
|
| 680 |
|
|
}
|
| 681 |
|
|
|
| 682 |
|
|
if (i >= count)
|
| 683 |
|
|
{
|
| 684 |
|
|
/* Only get the error once. */
|
| 685 |
|
|
gp = 4;
|
| 686 |
|
|
_bfd_set_gp_value (output_bfd, gp);
|
| 687 |
|
|
*error_message =
|
| 688 |
|
|
(char *) _("GP relative relocation when _gp not defined");
|
| 689 |
|
|
return bfd_reloc_dangerous;
|
| 690 |
|
|
}
|
| 691 |
|
|
}
|
| 692 |
|
|
}
|
| 693 |
|
|
|
| 694 |
|
|
if (bfd_is_com_section (symbol->section))
|
| 695 |
|
|
relocation = 0;
|
| 696 |
|
|
else
|
| 697 |
|
|
relocation = symbol->value;
|
| 698 |
|
|
|
| 699 |
|
|
relocation += symbol->section->output_section->vma;
|
| 700 |
|
|
relocation += symbol->section->output_offset;
|
| 701 |
|
|
|
| 702 |
|
|
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
|
| 703 |
|
|
return bfd_reloc_outofrange;
|
| 704 |
|
|
|
| 705 |
|
|
insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
|
| 706 |
|
|
|
| 707 |
|
|
/* Set val to the offset into the section or symbol. */
|
| 708 |
|
|
val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
|
| 709 |
|
|
if (val & 0x8000)
|
| 710 |
|
|
val -= 0x10000;
|
| 711 |
|
|
|
| 712 |
|
|
/* Adjust val for the final section location and GP value. If we
|
| 713 |
|
|
are producing relocatable output, we don't want to do this for
|
| 714 |
|
|
an external symbol. */
|
| 715 |
|
|
if (! relocatable
|
| 716 |
|
|
|| (symbol->flags & BSF_SECTION_SYM) != 0)
|
| 717 |
|
|
val += relocation - gp;
|
| 718 |
|
|
|
| 719 |
|
|
insn = (insn &~ (unsigned) 0xffff) | (val & 0xffff);
|
| 720 |
|
|
bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + reloc_entry->address);
|
| 721 |
|
|
|
| 722 |
|
|
if (relocatable)
|
| 723 |
|
|
reloc_entry->address += input_section->output_offset;
|
| 724 |
|
|
|
| 725 |
|
|
/* Make sure it fit in 16 bits. */
|
| 726 |
|
|
if ((long) val >= 0x8000 || (long) val < -0x8000)
|
| 727 |
|
|
return bfd_reloc_overflow;
|
| 728 |
|
|
|
| 729 |
|
|
return bfd_reloc_ok;
|
| 730 |
|
|
}
|
| 731 |
|
|
|
| 732 |
|
|
/* Get the howto structure for a generic reloc type. */
|
| 733 |
|
|
|
| 734 |
|
|
static reloc_howto_type *
|
| 735 |
|
|
mips_bfd_reloc_type_lookup (abfd, code)
|
| 736 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
| 737 |
|
|
bfd_reloc_code_real_type code;
|
| 738 |
|
|
{
|
| 739 |
|
|
int mips_type;
|
| 740 |
|
|
|
| 741 |
|
|
switch (code)
|
| 742 |
|
|
{
|
| 743 |
|
|
case BFD_RELOC_16:
|
| 744 |
|
|
mips_type = MIPS_R_REFHALF;
|
| 745 |
|
|
break;
|
| 746 |
|
|
case BFD_RELOC_32:
|
| 747 |
|
|
case BFD_RELOC_CTOR:
|
| 748 |
|
|
mips_type = MIPS_R_REFWORD;
|
| 749 |
|
|
break;
|
| 750 |
|
|
case BFD_RELOC_MIPS_JMP:
|
| 751 |
|
|
mips_type = MIPS_R_JMPADDR;
|
| 752 |
|
|
break;
|
| 753 |
|
|
case BFD_RELOC_HI16_S:
|
| 754 |
|
|
mips_type = MIPS_R_REFHI;
|
| 755 |
|
|
break;
|
| 756 |
|
|
case BFD_RELOC_LO16:
|
| 757 |
|
|
mips_type = MIPS_R_REFLO;
|
| 758 |
|
|
break;
|
| 759 |
|
|
case BFD_RELOC_GPREL16:
|
| 760 |
|
|
mips_type = MIPS_R_GPREL;
|
| 761 |
|
|
break;
|
| 762 |
|
|
case BFD_RELOC_MIPS_LITERAL:
|
| 763 |
|
|
mips_type = MIPS_R_LITERAL;
|
| 764 |
|
|
break;
|
| 765 |
|
|
case BFD_RELOC_16_PCREL_S2:
|
| 766 |
|
|
mips_type = MIPS_R_PCREL16;
|
| 767 |
|
|
break;
|
| 768 |
|
|
default:
|
| 769 |
|
|
return (reloc_howto_type *) NULL;
|
| 770 |
|
|
}
|
| 771 |
|
|
|
| 772 |
|
|
return &mips_howto_table[mips_type];
|
| 773 |
|
|
}
|
| 774 |
|
|
|
| 775 |
|
|
static reloc_howto_type *
|
| 776 |
|
|
mips_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 777 |
|
|
const char *r_name)
|
| 778 |
|
|
{
|
| 779 |
|
|
unsigned int i;
|
| 780 |
|
|
|
| 781 |
|
|
for (i = 0;
|
| 782 |
|
|
i < sizeof (mips_howto_table) / sizeof (mips_howto_table[0]);
|
| 783 |
|
|
i++)
|
| 784 |
|
|
if (mips_howto_table[i].name != NULL
|
| 785 |
|
|
&& strcasecmp (mips_howto_table[i].name, r_name) == 0)
|
| 786 |
|
|
return &mips_howto_table[i];
|
| 787 |
|
|
|
| 788 |
|
|
return NULL;
|
| 789 |
|
|
}
|
| 790 |
|
|
|
| 791 |
|
|
/* A helper routine for mips_relocate_section which handles the REFHI
|
| 792 |
|
|
relocations. The REFHI relocation must be followed by a REFLO
|
| 793 |
|
|
relocation, and the addend used is formed from the addends of both
|
| 794 |
|
|
instructions. */
|
| 795 |
|
|
|
| 796 |
|
|
static void
|
| 797 |
|
|
mips_relocate_hi (refhi, reflo, input_bfd, input_section, contents,
|
| 798 |
|
|
relocation)
|
| 799 |
|
|
struct internal_reloc *refhi;
|
| 800 |
|
|
struct internal_reloc *reflo;
|
| 801 |
|
|
bfd *input_bfd;
|
| 802 |
|
|
asection *input_section;
|
| 803 |
|
|
bfd_byte *contents;
|
| 804 |
|
|
bfd_vma relocation;
|
| 805 |
|
|
{
|
| 806 |
|
|
unsigned long insn;
|
| 807 |
|
|
unsigned long val;
|
| 808 |
|
|
unsigned long vallo;
|
| 809 |
|
|
|
| 810 |
|
|
if (refhi == NULL)
|
| 811 |
|
|
return;
|
| 812 |
|
|
|
| 813 |
|
|
insn = bfd_get_32 (input_bfd,
|
| 814 |
|
|
contents + refhi->r_vaddr - input_section->vma);
|
| 815 |
|
|
if (reflo == NULL)
|
| 816 |
|
|
vallo = 0;
|
| 817 |
|
|
else
|
| 818 |
|
|
vallo = (bfd_get_32 (input_bfd,
|
| 819 |
|
|
contents + reflo->r_vaddr - input_section->vma)
|
| 820 |
|
|
& 0xffff);
|
| 821 |
|
|
|
| 822 |
|
|
val = ((insn & 0xffff) << 16) + vallo;
|
| 823 |
|
|
val += relocation;
|
| 824 |
|
|
|
| 825 |
|
|
/* The low order 16 bits are always treated as a signed value.
|
| 826 |
|
|
Therefore, a negative value in the low order bits requires an
|
| 827 |
|
|
adjustment in the high order bits. We need to make this
|
| 828 |
|
|
adjustment in two ways: once for the bits we took from the data,
|
| 829 |
|
|
and once for the bits we are putting back in to the data. */
|
| 830 |
|
|
if ((vallo & 0x8000) != 0)
|
| 831 |
|
|
val -= 0x10000;
|
| 832 |
|
|
|
| 833 |
|
|
if ((val & 0x8000) != 0)
|
| 834 |
|
|
val += 0x10000;
|
| 835 |
|
|
|
| 836 |
|
|
insn = (insn &~ (unsigned) 0xffff) | ((val >> 16) & 0xffff);
|
| 837 |
|
|
bfd_put_32 (input_bfd, (bfd_vma) insn,
|
| 838 |
|
|
contents + refhi->r_vaddr - input_section->vma);
|
| 839 |
|
|
}
|
| 840 |
|
|
|
| 841 |
|
|
/* Relocate a section while linking a MIPS ECOFF file. */
|
| 842 |
|
|
|
| 843 |
|
|
static bfd_boolean
|
| 844 |
|
|
mips_relocate_section (output_bfd, info, input_bfd, input_section,
|
| 845 |
|
|
contents, external_relocs)
|
| 846 |
|
|
bfd *output_bfd;
|
| 847 |
|
|
struct bfd_link_info *info;
|
| 848 |
|
|
bfd *input_bfd;
|
| 849 |
|
|
asection *input_section;
|
| 850 |
|
|
bfd_byte *contents;
|
| 851 |
|
|
PTR external_relocs;
|
| 852 |
|
|
{
|
| 853 |
|
|
asection **symndx_to_section;
|
| 854 |
|
|
struct ecoff_link_hash_entry **sym_hashes;
|
| 855 |
|
|
bfd_vma gp;
|
| 856 |
|
|
bfd_boolean gp_undefined;
|
| 857 |
|
|
struct external_reloc *ext_rel;
|
| 858 |
|
|
struct external_reloc *ext_rel_end;
|
| 859 |
|
|
unsigned int i;
|
| 860 |
|
|
bfd_boolean got_lo;
|
| 861 |
|
|
struct internal_reloc lo_int_rel;
|
| 862 |
|
|
bfd_size_type amt;
|
| 863 |
|
|
|
| 864 |
|
|
BFD_ASSERT (input_bfd->xvec->byteorder
|
| 865 |
|
|
== output_bfd->xvec->byteorder);
|
| 866 |
|
|
|
| 867 |
|
|
/* We keep a table mapping the symndx found in an internal reloc to
|
| 868 |
|
|
the appropriate section. This is faster than looking up the
|
| 869 |
|
|
section by name each time. */
|
| 870 |
|
|
symndx_to_section = ecoff_data (input_bfd)->symndx_to_section;
|
| 871 |
|
|
if (symndx_to_section == (asection **) NULL)
|
| 872 |
|
|
{
|
| 873 |
|
|
amt = NUM_RELOC_SECTIONS * sizeof (asection *);
|
| 874 |
|
|
symndx_to_section = (asection **) bfd_alloc (input_bfd, amt);
|
| 875 |
|
|
if (!symndx_to_section)
|
| 876 |
|
|
return FALSE;
|
| 877 |
|
|
|
| 878 |
|
|
symndx_to_section[RELOC_SECTION_NONE] = NULL;
|
| 879 |
|
|
symndx_to_section[RELOC_SECTION_TEXT] =
|
| 880 |
|
|
bfd_get_section_by_name (input_bfd, ".text");
|
| 881 |
|
|
symndx_to_section[RELOC_SECTION_RDATA] =
|
| 882 |
|
|
bfd_get_section_by_name (input_bfd, ".rdata");
|
| 883 |
|
|
symndx_to_section[RELOC_SECTION_DATA] =
|
| 884 |
|
|
bfd_get_section_by_name (input_bfd, ".data");
|
| 885 |
|
|
symndx_to_section[RELOC_SECTION_SDATA] =
|
| 886 |
|
|
bfd_get_section_by_name (input_bfd, ".sdata");
|
| 887 |
|
|
symndx_to_section[RELOC_SECTION_SBSS] =
|
| 888 |
|
|
bfd_get_section_by_name (input_bfd, ".sbss");
|
| 889 |
|
|
symndx_to_section[RELOC_SECTION_BSS] =
|
| 890 |
|
|
bfd_get_section_by_name (input_bfd, ".bss");
|
| 891 |
|
|
symndx_to_section[RELOC_SECTION_INIT] =
|
| 892 |
|
|
bfd_get_section_by_name (input_bfd, ".init");
|
| 893 |
|
|
symndx_to_section[RELOC_SECTION_LIT8] =
|
| 894 |
|
|
bfd_get_section_by_name (input_bfd, ".lit8");
|
| 895 |
|
|
symndx_to_section[RELOC_SECTION_LIT4] =
|
| 896 |
|
|
bfd_get_section_by_name (input_bfd, ".lit4");
|
| 897 |
|
|
symndx_to_section[RELOC_SECTION_XDATA] = NULL;
|
| 898 |
|
|
symndx_to_section[RELOC_SECTION_PDATA] = NULL;
|
| 899 |
|
|
symndx_to_section[RELOC_SECTION_FINI] =
|
| 900 |
|
|
bfd_get_section_by_name (input_bfd, ".fini");
|
| 901 |
|
|
symndx_to_section[RELOC_SECTION_LITA] = NULL;
|
| 902 |
|
|
symndx_to_section[RELOC_SECTION_ABS] = NULL;
|
| 903 |
|
|
|
| 904 |
|
|
ecoff_data (input_bfd)->symndx_to_section = symndx_to_section;
|
| 905 |
|
|
}
|
| 906 |
|
|
|
| 907 |
|
|
sym_hashes = ecoff_data (input_bfd)->sym_hashes;
|
| 908 |
|
|
|
| 909 |
|
|
gp = _bfd_get_gp_value (output_bfd);
|
| 910 |
|
|
if (gp == 0)
|
| 911 |
|
|
gp_undefined = TRUE;
|
| 912 |
|
|
else
|
| 913 |
|
|
gp_undefined = FALSE;
|
| 914 |
|
|
|
| 915 |
|
|
got_lo = FALSE;
|
| 916 |
|
|
|
| 917 |
|
|
ext_rel = (struct external_reloc *) external_relocs;
|
| 918 |
|
|
ext_rel_end = ext_rel + input_section->reloc_count;
|
| 919 |
|
|
for (i = 0; ext_rel < ext_rel_end; ext_rel++, i++)
|
| 920 |
|
|
{
|
| 921 |
|
|
struct internal_reloc int_rel;
|
| 922 |
|
|
bfd_boolean use_lo = FALSE;
|
| 923 |
|
|
bfd_vma addend;
|
| 924 |
|
|
reloc_howto_type *howto;
|
| 925 |
|
|
struct ecoff_link_hash_entry *h = NULL;
|
| 926 |
|
|
asection *s = NULL;
|
| 927 |
|
|
bfd_vma relocation;
|
| 928 |
|
|
bfd_reloc_status_type r;
|
| 929 |
|
|
|
| 930 |
|
|
if (! got_lo)
|
| 931 |
|
|
mips_ecoff_swap_reloc_in (input_bfd, (PTR) ext_rel, &int_rel);
|
| 932 |
|
|
else
|
| 933 |
|
|
{
|
| 934 |
|
|
int_rel = lo_int_rel;
|
| 935 |
|
|
got_lo = FALSE;
|
| 936 |
|
|
}
|
| 937 |
|
|
|
| 938 |
|
|
BFD_ASSERT (int_rel.r_type
|
| 939 |
|
|
< sizeof mips_howto_table / sizeof mips_howto_table[0]);
|
| 940 |
|
|
|
| 941 |
|
|
/* The REFHI reloc requires special handling. It must be followed
|
| 942 |
|
|
by a REFLO reloc, and the addend is formed from both relocs. */
|
| 943 |
|
|
if (int_rel.r_type == MIPS_R_REFHI)
|
| 944 |
|
|
{
|
| 945 |
|
|
struct external_reloc *lo_ext_rel;
|
| 946 |
|
|
|
| 947 |
|
|
/* As a GNU extension, permit an arbitrary number of REFHI
|
| 948 |
|
|
relocs before the REFLO reloc. This permits gcc to emit
|
| 949 |
|
|
the HI and LO relocs itself. */
|
| 950 |
|
|
for (lo_ext_rel = ext_rel + 1;
|
| 951 |
|
|
lo_ext_rel < ext_rel_end;
|
| 952 |
|
|
lo_ext_rel++)
|
| 953 |
|
|
{
|
| 954 |
|
|
mips_ecoff_swap_reloc_in (input_bfd, (PTR) lo_ext_rel,
|
| 955 |
|
|
&lo_int_rel);
|
| 956 |
|
|
if (lo_int_rel.r_type != int_rel.r_type)
|
| 957 |
|
|
break;
|
| 958 |
|
|
}
|
| 959 |
|
|
|
| 960 |
|
|
if (lo_ext_rel < ext_rel_end
|
| 961 |
|
|
&& lo_int_rel.r_type == MIPS_R_REFLO
|
| 962 |
|
|
&& int_rel.r_extern == lo_int_rel.r_extern
|
| 963 |
|
|
&& int_rel.r_symndx == lo_int_rel.r_symndx)
|
| 964 |
|
|
{
|
| 965 |
|
|
use_lo = TRUE;
|
| 966 |
|
|
if (lo_ext_rel == ext_rel + 1)
|
| 967 |
|
|
got_lo = TRUE;
|
| 968 |
|
|
}
|
| 969 |
|
|
}
|
| 970 |
|
|
|
| 971 |
|
|
howto = &mips_howto_table[int_rel.r_type];
|
| 972 |
|
|
|
| 973 |
|
|
if (int_rel.r_extern)
|
| 974 |
|
|
{
|
| 975 |
|
|
h = sym_hashes[int_rel.r_symndx];
|
| 976 |
|
|
/* If h is NULL, that means that there is a reloc against an
|
| 977 |
|
|
external symbol which we thought was just a debugging
|
| 978 |
|
|
symbol. This should not happen. */
|
| 979 |
|
|
if (h == (struct ecoff_link_hash_entry *) NULL)
|
| 980 |
|
|
abort ();
|
| 981 |
|
|
}
|
| 982 |
|
|
else
|
| 983 |
|
|
{
|
| 984 |
|
|
if (int_rel.r_symndx < 0 || int_rel.r_symndx >= NUM_RELOC_SECTIONS)
|
| 985 |
|
|
s = NULL;
|
| 986 |
|
|
else
|
| 987 |
|
|
s = symndx_to_section[int_rel.r_symndx];
|
| 988 |
|
|
|
| 989 |
|
|
if (s == (asection *) NULL)
|
| 990 |
|
|
abort ();
|
| 991 |
|
|
}
|
| 992 |
|
|
|
| 993 |
|
|
/* The GPREL reloc uses an addend: the difference in the GP
|
| 994 |
|
|
values. */
|
| 995 |
|
|
if (int_rel.r_type != MIPS_R_GPREL
|
| 996 |
|
|
&& int_rel.r_type != MIPS_R_LITERAL)
|
| 997 |
|
|
addend = 0;
|
| 998 |
|
|
else
|
| 999 |
|
|
{
|
| 1000 |
|
|
if (gp_undefined)
|
| 1001 |
|
|
{
|
| 1002 |
|
|
if (! ((*info->callbacks->reloc_dangerous)
|
| 1003 |
|
|
(info, _("GP relative relocation used when GP not defined"),
|
| 1004 |
|
|
input_bfd, input_section,
|
| 1005 |
|
|
int_rel.r_vaddr - input_section->vma)))
|
| 1006 |
|
|
return FALSE;
|
| 1007 |
|
|
/* Only give the error once per link. */
|
| 1008 |
|
|
gp = 4;
|
| 1009 |
|
|
_bfd_set_gp_value (output_bfd, gp);
|
| 1010 |
|
|
gp_undefined = FALSE;
|
| 1011 |
|
|
}
|
| 1012 |
|
|
if (! int_rel.r_extern)
|
| 1013 |
|
|
{
|
| 1014 |
|
|
/* This is a relocation against a section. The current
|
| 1015 |
|
|
addend in the instruction is the difference between
|
| 1016 |
|
|
INPUT_SECTION->vma and the GP value of INPUT_BFD. We
|
| 1017 |
|
|
must change this to be the difference between the
|
| 1018 |
|
|
final definition (which will end up in RELOCATION)
|
| 1019 |
|
|
and the GP value of OUTPUT_BFD (which is in GP). */
|
| 1020 |
|
|
addend = ecoff_data (input_bfd)->gp - gp;
|
| 1021 |
|
|
}
|
| 1022 |
|
|
else if (! info->relocatable
|
| 1023 |
|
|
|| h->root.type == bfd_link_hash_defined
|
| 1024 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 1025 |
|
|
{
|
| 1026 |
|
|
/* This is a relocation against a defined symbol. The
|
| 1027 |
|
|
current addend in the instruction is simply the
|
| 1028 |
|
|
desired offset into the symbol (normally zero). We
|
| 1029 |
|
|
are going to change this into a relocation against a
|
| 1030 |
|
|
defined symbol, so we want the instruction to hold
|
| 1031 |
|
|
the difference between the final definition of the
|
| 1032 |
|
|
symbol (which will end up in RELOCATION) and the GP
|
| 1033 |
|
|
value of OUTPUT_BFD (which is in GP). */
|
| 1034 |
|
|
addend = - gp;
|
| 1035 |
|
|
}
|
| 1036 |
|
|
else
|
| 1037 |
|
|
{
|
| 1038 |
|
|
/* This is a relocation against an undefined or common
|
| 1039 |
|
|
symbol. The current addend in the instruction is
|
| 1040 |
|
|
simply the desired offset into the symbol (normally
|
| 1041 |
|
|
zero). We are generating relocatable output, and we
|
| 1042 |
|
|
aren't going to define this symbol, so we just leave
|
| 1043 |
|
|
the instruction alone. */
|
| 1044 |
|
|
addend = 0;
|
| 1045 |
|
|
}
|
| 1046 |
|
|
}
|
| 1047 |
|
|
|
| 1048 |
|
|
if (info->relocatable)
|
| 1049 |
|
|
{
|
| 1050 |
|
|
/* We are generating relocatable output, and must convert
|
| 1051 |
|
|
the existing reloc. */
|
| 1052 |
|
|
if (int_rel.r_extern)
|
| 1053 |
|
|
{
|
| 1054 |
|
|
if ((h->root.type == bfd_link_hash_defined
|
| 1055 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 1056 |
|
|
&& ! bfd_is_abs_section (h->root.u.def.section))
|
| 1057 |
|
|
{
|
| 1058 |
|
|
const char *name;
|
| 1059 |
|
|
|
| 1060 |
|
|
/* This symbol is defined in the output. Convert
|
| 1061 |
|
|
the reloc from being against the symbol to being
|
| 1062 |
|
|
against the section. */
|
| 1063 |
|
|
|
| 1064 |
|
|
/* Clear the r_extern bit. */
|
| 1065 |
|
|
int_rel.r_extern = 0;
|
| 1066 |
|
|
|
| 1067 |
|
|
/* Compute a new r_symndx value. */
|
| 1068 |
|
|
s = h->root.u.def.section;
|
| 1069 |
|
|
name = bfd_get_section_name (output_bfd,
|
| 1070 |
|
|
s->output_section);
|
| 1071 |
|
|
|
| 1072 |
|
|
int_rel.r_symndx = -1;
|
| 1073 |
|
|
switch (name[1])
|
| 1074 |
|
|
{
|
| 1075 |
|
|
case 'b':
|
| 1076 |
|
|
if (strcmp (name, ".bss") == 0)
|
| 1077 |
|
|
int_rel.r_symndx = RELOC_SECTION_BSS;
|
| 1078 |
|
|
break;
|
| 1079 |
|
|
case 'd':
|
| 1080 |
|
|
if (strcmp (name, ".data") == 0)
|
| 1081 |
|
|
int_rel.r_symndx = RELOC_SECTION_DATA;
|
| 1082 |
|
|
break;
|
| 1083 |
|
|
case 'f':
|
| 1084 |
|
|
if (strcmp (name, ".fini") == 0)
|
| 1085 |
|
|
int_rel.r_symndx = RELOC_SECTION_FINI;
|
| 1086 |
|
|
break;
|
| 1087 |
|
|
case 'i':
|
| 1088 |
|
|
if (strcmp (name, ".init") == 0)
|
| 1089 |
|
|
int_rel.r_symndx = RELOC_SECTION_INIT;
|
| 1090 |
|
|
break;
|
| 1091 |
|
|
case 'l':
|
| 1092 |
|
|
if (strcmp (name, ".lit8") == 0)
|
| 1093 |
|
|
int_rel.r_symndx = RELOC_SECTION_LIT8;
|
| 1094 |
|
|
else if (strcmp (name, ".lit4") == 0)
|
| 1095 |
|
|
int_rel.r_symndx = RELOC_SECTION_LIT4;
|
| 1096 |
|
|
break;
|
| 1097 |
|
|
case 'r':
|
| 1098 |
|
|
if (strcmp (name, ".rdata") == 0)
|
| 1099 |
|
|
int_rel.r_symndx = RELOC_SECTION_RDATA;
|
| 1100 |
|
|
break;
|
| 1101 |
|
|
case 's':
|
| 1102 |
|
|
if (strcmp (name, ".sdata") == 0)
|
| 1103 |
|
|
int_rel.r_symndx = RELOC_SECTION_SDATA;
|
| 1104 |
|
|
else if (strcmp (name, ".sbss") == 0)
|
| 1105 |
|
|
int_rel.r_symndx = RELOC_SECTION_SBSS;
|
| 1106 |
|
|
break;
|
| 1107 |
|
|
case 't':
|
| 1108 |
|
|
if (strcmp (name, ".text") == 0)
|
| 1109 |
|
|
int_rel.r_symndx = RELOC_SECTION_TEXT;
|
| 1110 |
|
|
break;
|
| 1111 |
|
|
}
|
| 1112 |
|
|
|
| 1113 |
|
|
if (int_rel.r_symndx == -1)
|
| 1114 |
|
|
abort ();
|
| 1115 |
|
|
|
| 1116 |
|
|
/* Add the section VMA and the symbol value. */
|
| 1117 |
|
|
relocation = (h->root.u.def.value
|
| 1118 |
|
|
+ s->output_section->vma
|
| 1119 |
|
|
+ s->output_offset);
|
| 1120 |
|
|
|
| 1121 |
|
|
/* For a PC relative relocation, the object file
|
| 1122 |
|
|
currently holds just the addend. We must adjust
|
| 1123 |
|
|
by the address to get the right value. */
|
| 1124 |
|
|
if (howto->pc_relative)
|
| 1125 |
|
|
relocation -= int_rel.r_vaddr - input_section->vma;
|
| 1126 |
|
|
|
| 1127 |
|
|
h = NULL;
|
| 1128 |
|
|
}
|
| 1129 |
|
|
else
|
| 1130 |
|
|
{
|
| 1131 |
|
|
/* Change the symndx value to the right one for the
|
| 1132 |
|
|
output BFD. */
|
| 1133 |
|
|
int_rel.r_symndx = h->indx;
|
| 1134 |
|
|
if (int_rel.r_symndx == -1)
|
| 1135 |
|
|
{
|
| 1136 |
|
|
/* This symbol is not being written out. */
|
| 1137 |
|
|
if (! ((*info->callbacks->unattached_reloc)
|
| 1138 |
|
|
(info, h->root.root.string, input_bfd,
|
| 1139 |
|
|
input_section,
|
| 1140 |
|
|
int_rel.r_vaddr - input_section->vma)))
|
| 1141 |
|
|
return FALSE;
|
| 1142 |
|
|
int_rel.r_symndx = 0;
|
| 1143 |
|
|
}
|
| 1144 |
|
|
relocation = 0;
|
| 1145 |
|
|
}
|
| 1146 |
|
|
}
|
| 1147 |
|
|
else
|
| 1148 |
|
|
{
|
| 1149 |
|
|
/* This is a relocation against a section. Adjust the
|
| 1150 |
|
|
value by the amount the section moved. */
|
| 1151 |
|
|
relocation = (s->output_section->vma
|
| 1152 |
|
|
+ s->output_offset
|
| 1153 |
|
|
- s->vma);
|
| 1154 |
|
|
}
|
| 1155 |
|
|
|
| 1156 |
|
|
relocation += addend;
|
| 1157 |
|
|
addend = 0;
|
| 1158 |
|
|
|
| 1159 |
|
|
/* Adjust a PC relative relocation by removing the reference
|
| 1160 |
|
|
to the original address in the section and including the
|
| 1161 |
|
|
reference to the new address. */
|
| 1162 |
|
|
if (howto->pc_relative)
|
| 1163 |
|
|
relocation -= (input_section->output_section->vma
|
| 1164 |
|
|
+ input_section->output_offset
|
| 1165 |
|
|
- input_section->vma);
|
| 1166 |
|
|
|
| 1167 |
|
|
/* Adjust the contents. */
|
| 1168 |
|
|
if (relocation == 0)
|
| 1169 |
|
|
r = bfd_reloc_ok;
|
| 1170 |
|
|
else
|
| 1171 |
|
|
{
|
| 1172 |
|
|
if (int_rel.r_type != MIPS_R_REFHI)
|
| 1173 |
|
|
r = _bfd_relocate_contents (howto, input_bfd, relocation,
|
| 1174 |
|
|
(contents
|
| 1175 |
|
|
+ int_rel.r_vaddr
|
| 1176 |
|
|
- input_section->vma));
|
| 1177 |
|
|
else
|
| 1178 |
|
|
{
|
| 1179 |
|
|
mips_relocate_hi (&int_rel,
|
| 1180 |
|
|
use_lo ? &lo_int_rel : NULL,
|
| 1181 |
|
|
input_bfd, input_section, contents,
|
| 1182 |
|
|
relocation);
|
| 1183 |
|
|
r = bfd_reloc_ok;
|
| 1184 |
|
|
}
|
| 1185 |
|
|
}
|
| 1186 |
|
|
|
| 1187 |
|
|
/* Adjust the reloc address. */
|
| 1188 |
|
|
int_rel.r_vaddr += (input_section->output_section->vma
|
| 1189 |
|
|
+ input_section->output_offset
|
| 1190 |
|
|
- input_section->vma);
|
| 1191 |
|
|
|
| 1192 |
|
|
/* Save the changed reloc information. */
|
| 1193 |
|
|
mips_ecoff_swap_reloc_out (input_bfd, &int_rel, (PTR) ext_rel);
|
| 1194 |
|
|
}
|
| 1195 |
|
|
else
|
| 1196 |
|
|
{
|
| 1197 |
|
|
/* We are producing a final executable. */
|
| 1198 |
|
|
if (int_rel.r_extern)
|
| 1199 |
|
|
{
|
| 1200 |
|
|
/* This is a reloc against a symbol. */
|
| 1201 |
|
|
if (h->root.type == bfd_link_hash_defined
|
| 1202 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 1203 |
|
|
{
|
| 1204 |
|
|
asection *hsec;
|
| 1205 |
|
|
|
| 1206 |
|
|
hsec = h->root.u.def.section;
|
| 1207 |
|
|
relocation = (h->root.u.def.value
|
| 1208 |
|
|
+ hsec->output_section->vma
|
| 1209 |
|
|
+ hsec->output_offset);
|
| 1210 |
|
|
}
|
| 1211 |
|
|
else
|
| 1212 |
|
|
{
|
| 1213 |
|
|
if (! ((*info->callbacks->undefined_symbol)
|
| 1214 |
|
|
(info, h->root.root.string, input_bfd,
|
| 1215 |
|
|
input_section,
|
| 1216 |
|
|
int_rel.r_vaddr - input_section->vma, TRUE)))
|
| 1217 |
|
|
return FALSE;
|
| 1218 |
|
|
relocation = 0;
|
| 1219 |
|
|
}
|
| 1220 |
|
|
}
|
| 1221 |
|
|
else
|
| 1222 |
|
|
{
|
| 1223 |
|
|
/* This is a reloc against a section. */
|
| 1224 |
|
|
relocation = (s->output_section->vma
|
| 1225 |
|
|
+ s->output_offset
|
| 1226 |
|
|
- s->vma);
|
| 1227 |
|
|
|
| 1228 |
|
|
/* A PC relative reloc is already correct in the object
|
| 1229 |
|
|
file. Make it look like a pcrel_offset relocation by
|
| 1230 |
|
|
adding in the start address. */
|
| 1231 |
|
|
if (howto->pc_relative)
|
| 1232 |
|
|
relocation += int_rel.r_vaddr;
|
| 1233 |
|
|
}
|
| 1234 |
|
|
|
| 1235 |
|
|
if (int_rel.r_type != MIPS_R_REFHI)
|
| 1236 |
|
|
r = _bfd_final_link_relocate (howto,
|
| 1237 |
|
|
input_bfd,
|
| 1238 |
|
|
input_section,
|
| 1239 |
|
|
contents,
|
| 1240 |
|
|
(int_rel.r_vaddr
|
| 1241 |
|
|
- input_section->vma),
|
| 1242 |
|
|
relocation,
|
| 1243 |
|
|
addend);
|
| 1244 |
|
|
else
|
| 1245 |
|
|
{
|
| 1246 |
|
|
mips_relocate_hi (&int_rel,
|
| 1247 |
|
|
use_lo ? &lo_int_rel : NULL,
|
| 1248 |
|
|
input_bfd, input_section, contents,
|
| 1249 |
|
|
relocation);
|
| 1250 |
|
|
r = bfd_reloc_ok;
|
| 1251 |
|
|
}
|
| 1252 |
|
|
}
|
| 1253 |
|
|
|
| 1254 |
|
|
/* MIPS_R_JMPADDR requires peculiar overflow detection. The
|
| 1255 |
|
|
instruction provides a 28 bit address (the two lower bits are
|
| 1256 |
|
|
implicit zeroes) which is combined with the upper four bits
|
| 1257 |
|
|
of the instruction address. */
|
| 1258 |
|
|
if (r == bfd_reloc_ok
|
| 1259 |
|
|
&& int_rel.r_type == MIPS_R_JMPADDR
|
| 1260 |
|
|
&& (((relocation
|
| 1261 |
|
|
+ addend
|
| 1262 |
|
|
+ (int_rel.r_extern ? 0 : s->vma))
|
| 1263 |
|
|
& 0xf0000000)
|
| 1264 |
|
|
!= ((input_section->output_section->vma
|
| 1265 |
|
|
+ input_section->output_offset
|
| 1266 |
|
|
+ (int_rel.r_vaddr - input_section->vma))
|
| 1267 |
|
|
& 0xf0000000)))
|
| 1268 |
|
|
r = bfd_reloc_overflow;
|
| 1269 |
|
|
|
| 1270 |
|
|
if (r != bfd_reloc_ok)
|
| 1271 |
|
|
{
|
| 1272 |
|
|
switch (r)
|
| 1273 |
|
|
{
|
| 1274 |
|
|
default:
|
| 1275 |
|
|
case bfd_reloc_outofrange:
|
| 1276 |
|
|
abort ();
|
| 1277 |
|
|
case bfd_reloc_overflow:
|
| 1278 |
|
|
{
|
| 1279 |
|
|
const char *name;
|
| 1280 |
|
|
|
| 1281 |
|
|
if (int_rel.r_extern)
|
| 1282 |
|
|
name = NULL;
|
| 1283 |
|
|
else
|
| 1284 |
|
|
name = bfd_section_name (input_bfd, s);
|
| 1285 |
|
|
if (! ((*info->callbacks->reloc_overflow)
|
| 1286 |
|
|
(info, (h ? &h->root : NULL), name, howto->name,
|
| 1287 |
|
|
(bfd_vma) 0, input_bfd, input_section,
|
| 1288 |
|
|
int_rel.r_vaddr - input_section->vma)))
|
| 1289 |
|
|
return FALSE;
|
| 1290 |
|
|
}
|
| 1291 |
|
|
break;
|
| 1292 |
|
|
}
|
| 1293 |
|
|
}
|
| 1294 |
|
|
}
|
| 1295 |
|
|
|
| 1296 |
|
|
return TRUE;
|
| 1297 |
|
|
}
|
| 1298 |
|
|
|
| 1299 |
|
|
/* This is the ECOFF backend structure. The backend field of the
|
| 1300 |
|
|
target vector points to this. */
|
| 1301 |
|
|
|
| 1302 |
|
|
static const struct ecoff_backend_data mips_ecoff_backend_data =
|
| 1303 |
|
|
{
|
| 1304 |
|
|
/* COFF backend structure. */
|
| 1305 |
|
|
{
|
| 1306 |
|
|
(void (*) PARAMS ((bfd *,PTR,int,int,int,int,PTR))) bfd_void, /* aux_in */
|
| 1307 |
|
|
(void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_in */
|
| 1308 |
|
|
(void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_in */
|
| 1309 |
|
|
(unsigned (*) PARAMS ((bfd *,PTR,int,int,int,int,PTR)))bfd_void,/*aux_out*/
|
| 1310 |
|
|
(unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_out */
|
| 1311 |
|
|
(unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_out */
|
| 1312 |
|
|
(unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* reloc_out */
|
| 1313 |
|
|
mips_ecoff_swap_filehdr_out, mips_ecoff_swap_aouthdr_out,
|
| 1314 |
|
|
mips_ecoff_swap_scnhdr_out,
|
| 1315 |
|
|
FILHSZ, AOUTSZ, SCNHSZ, 0, 0, 0, 0, FILNMLEN, TRUE,
|
| 1316 |
|
|
ECOFF_NO_LONG_SECTION_NAMES, 4, FALSE, 2,
|
| 1317 |
|
|
mips_ecoff_swap_filehdr_in, mips_ecoff_swap_aouthdr_in,
|
| 1318 |
|
|
mips_ecoff_swap_scnhdr_in, NULL,
|
| 1319 |
|
|
mips_ecoff_bad_format_hook, _bfd_ecoff_set_arch_mach_hook,
|
| 1320 |
|
|
_bfd_ecoff_mkobject_hook, _bfd_ecoff_styp_to_sec_flags,
|
| 1321 |
|
|
_bfd_ecoff_set_alignment_hook, _bfd_ecoff_slurp_symbol_table,
|
| 1322 |
|
|
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
|
| 1323 |
|
|
NULL, NULL, NULL
|
| 1324 |
|
|
},
|
| 1325 |
|
|
/* Supported architecture. */
|
| 1326 |
|
|
bfd_arch_mips,
|
| 1327 |
|
|
/* Initial portion of armap string. */
|
| 1328 |
|
|
"__________",
|
| 1329 |
|
|
/* The page boundary used to align sections in a demand-paged
|
| 1330 |
|
|
executable file. E.g., 0x1000. */
|
| 1331 |
|
|
0x1000,
|
| 1332 |
|
|
/* TRUE if the .rdata section is part of the text segment, as on the
|
| 1333 |
|
|
Alpha. FALSE if .rdata is part of the data segment, as on the
|
| 1334 |
|
|
MIPS. */
|
| 1335 |
|
|
FALSE,
|
| 1336 |
|
|
/* Bitsize of constructor entries. */
|
| 1337 |
|
|
32,
|
| 1338 |
|
|
/* Reloc to use for constructor entries. */
|
| 1339 |
|
|
&mips_howto_table[MIPS_R_REFWORD],
|
| 1340 |
|
|
{
|
| 1341 |
|
|
/* Symbol table magic number. */
|
| 1342 |
|
|
magicSym,
|
| 1343 |
|
|
/* Alignment of debugging information. E.g., 4. */
|
| 1344 |
|
|
4,
|
| 1345 |
|
|
/* Sizes of external symbolic information. */
|
| 1346 |
|
|
sizeof (struct hdr_ext),
|
| 1347 |
|
|
sizeof (struct dnr_ext),
|
| 1348 |
|
|
sizeof (struct pdr_ext),
|
| 1349 |
|
|
sizeof (struct sym_ext),
|
| 1350 |
|
|
sizeof (struct opt_ext),
|
| 1351 |
|
|
sizeof (struct fdr_ext),
|
| 1352 |
|
|
sizeof (struct rfd_ext),
|
| 1353 |
|
|
sizeof (struct ext_ext),
|
| 1354 |
|
|
/* Functions to swap in external symbolic data. */
|
| 1355 |
|
|
ecoff_swap_hdr_in,
|
| 1356 |
|
|
ecoff_swap_dnr_in,
|
| 1357 |
|
|
ecoff_swap_pdr_in,
|
| 1358 |
|
|
ecoff_swap_sym_in,
|
| 1359 |
|
|
ecoff_swap_opt_in,
|
| 1360 |
|
|
ecoff_swap_fdr_in,
|
| 1361 |
|
|
ecoff_swap_rfd_in,
|
| 1362 |
|
|
ecoff_swap_ext_in,
|
| 1363 |
|
|
_bfd_ecoff_swap_tir_in,
|
| 1364 |
|
|
_bfd_ecoff_swap_rndx_in,
|
| 1365 |
|
|
/* Functions to swap out external symbolic data. */
|
| 1366 |
|
|
ecoff_swap_hdr_out,
|
| 1367 |
|
|
ecoff_swap_dnr_out,
|
| 1368 |
|
|
ecoff_swap_pdr_out,
|
| 1369 |
|
|
ecoff_swap_sym_out,
|
| 1370 |
|
|
ecoff_swap_opt_out,
|
| 1371 |
|
|
ecoff_swap_fdr_out,
|
| 1372 |
|
|
ecoff_swap_rfd_out,
|
| 1373 |
|
|
ecoff_swap_ext_out,
|
| 1374 |
|
|
_bfd_ecoff_swap_tir_out,
|
| 1375 |
|
|
_bfd_ecoff_swap_rndx_out,
|
| 1376 |
|
|
/* Function to read in symbolic data. */
|
| 1377 |
|
|
_bfd_ecoff_slurp_symbolic_info
|
| 1378 |
|
|
},
|
| 1379 |
|
|
/* External reloc size. */
|
| 1380 |
|
|
RELSZ,
|
| 1381 |
|
|
/* Reloc swapping functions. */
|
| 1382 |
|
|
mips_ecoff_swap_reloc_in,
|
| 1383 |
|
|
mips_ecoff_swap_reloc_out,
|
| 1384 |
|
|
/* Backend reloc tweaking. */
|
| 1385 |
|
|
mips_adjust_reloc_in,
|
| 1386 |
|
|
mips_adjust_reloc_out,
|
| 1387 |
|
|
/* Relocate section contents while linking. */
|
| 1388 |
|
|
mips_relocate_section,
|
| 1389 |
|
|
/* Do final adjustments to filehdr and aouthdr. */
|
| 1390 |
|
|
NULL,
|
| 1391 |
|
|
/* Read an element from an archive at a given file position. */
|
| 1392 |
|
|
_bfd_get_elt_at_filepos
|
| 1393 |
|
|
};
|
| 1394 |
|
|
|
| 1395 |
|
|
/* Looking up a reloc type is MIPS specific. */
|
| 1396 |
|
|
#define _bfd_ecoff_bfd_reloc_type_lookup mips_bfd_reloc_type_lookup
|
| 1397 |
|
|
#define _bfd_ecoff_bfd_reloc_name_lookup mips_bfd_reloc_name_lookup
|
| 1398 |
|
|
|
| 1399 |
|
|
/* Getting relocated section contents is generic. */
|
| 1400 |
|
|
#define _bfd_ecoff_bfd_get_relocated_section_contents \
|
| 1401 |
|
|
bfd_generic_get_relocated_section_contents
|
| 1402 |
|
|
|
| 1403 |
|
|
/* Handling file windows is generic. */
|
| 1404 |
|
|
#define _bfd_ecoff_get_section_contents_in_window \
|
| 1405 |
|
|
_bfd_generic_get_section_contents_in_window
|
| 1406 |
|
|
|
| 1407 |
|
|
/* Relaxing sections is MIPS specific. */
|
| 1408 |
|
|
#define _bfd_ecoff_bfd_relax_section bfd_generic_relax_section
|
| 1409 |
|
|
|
| 1410 |
|
|
/* GC of sections is not done. */
|
| 1411 |
|
|
#define _bfd_ecoff_bfd_gc_sections bfd_generic_gc_sections
|
| 1412 |
|
|
|
| 1413 |
161 |
khays |
/* Input section flags is not implemented. */
|
| 1414 |
|
|
#define _bfd_ecoff_bfd_lookup_section_flags bfd_generic_lookup_section_flags
|
| 1415 |
|
|
|
| 1416 |
14 |
khays |
/* Merging of sections is not done. */
|
| 1417 |
|
|
#define _bfd_ecoff_bfd_merge_sections bfd_generic_merge_sections
|
| 1418 |
|
|
|
| 1419 |
|
|
#define _bfd_ecoff_bfd_is_group_section bfd_generic_is_group_section
|
| 1420 |
|
|
#define _bfd_ecoff_bfd_discard_group bfd_generic_discard_group
|
| 1421 |
|
|
#define _bfd_ecoff_section_already_linked \
|
| 1422 |
161 |
khays |
_bfd_coff_section_already_linked
|
| 1423 |
14 |
khays |
#define _bfd_ecoff_bfd_define_common_symbol bfd_generic_define_common_symbol
|
| 1424 |
|
|
|
| 1425 |
|
|
extern const bfd_target ecoff_big_vec;
|
| 1426 |
|
|
|
| 1427 |
|
|
const bfd_target ecoff_little_vec =
|
| 1428 |
|
|
{
|
| 1429 |
|
|
"ecoff-littlemips", /* name */
|
| 1430 |
|
|
bfd_target_ecoff_flavour,
|
| 1431 |
|
|
BFD_ENDIAN_LITTLE, /* data byte order is little */
|
| 1432 |
|
|
BFD_ENDIAN_LITTLE, /* header byte order is little */
|
| 1433 |
|
|
|
| 1434 |
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
| 1435 |
|
|
HAS_LINENO | HAS_DEBUG |
|
| 1436 |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
| 1437 |
|
|
|
| 1438 |
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
|
| 1439 |
|
|
0, /* leading underscore */
|
| 1440 |
|
|
' ', /* ar_pad_char */
|
| 1441 |
|
|
15, /* ar_max_namelen */
|
| 1442 |
148 |
khays |
0, /* match priority. */
|
| 1443 |
14 |
khays |
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
| 1444 |
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
| 1445 |
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
| 1446 |
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
| 1447 |
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
| 1448 |
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
| 1449 |
|
|
|
| 1450 |
|
|
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
| 1451 |
|
|
bfd_generic_archive_p, _bfd_dummy_target},
|
| 1452 |
|
|
{bfd_false, _bfd_ecoff_mkobject, /* bfd_set_format */
|
| 1453 |
|
|
_bfd_generic_mkarchive, bfd_false},
|
| 1454 |
|
|
{bfd_false, _bfd_ecoff_write_object_contents, /* bfd_write_contents */
|
| 1455 |
|
|
_bfd_write_archive_contents, bfd_false},
|
| 1456 |
|
|
|
| 1457 |
|
|
BFD_JUMP_TABLE_GENERIC (_bfd_ecoff),
|
| 1458 |
|
|
BFD_JUMP_TABLE_COPY (_bfd_ecoff),
|
| 1459 |
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
| 1460 |
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_ecoff),
|
| 1461 |
|
|
BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff),
|
| 1462 |
|
|
BFD_JUMP_TABLE_RELOCS (_bfd_ecoff),
|
| 1463 |
|
|
BFD_JUMP_TABLE_WRITE (_bfd_ecoff),
|
| 1464 |
|
|
BFD_JUMP_TABLE_LINK (_bfd_ecoff),
|
| 1465 |
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
| 1466 |
|
|
|
| 1467 |
|
|
& ecoff_big_vec,
|
| 1468 |
|
|
|
| 1469 |
|
|
(PTR) &mips_ecoff_backend_data
|
| 1470 |
|
|
};
|
| 1471 |
|
|
|
| 1472 |
|
|
const bfd_target ecoff_big_vec =
|
| 1473 |
|
|
{
|
| 1474 |
|
|
"ecoff-bigmips", /* name */
|
| 1475 |
|
|
bfd_target_ecoff_flavour,
|
| 1476 |
|
|
BFD_ENDIAN_BIG, /* data byte order is big */
|
| 1477 |
|
|
BFD_ENDIAN_BIG, /* header byte order is big */
|
| 1478 |
|
|
|
| 1479 |
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
| 1480 |
|
|
HAS_LINENO | HAS_DEBUG |
|
| 1481 |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
| 1482 |
|
|
|
| 1483 |
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
|
| 1484 |
|
|
0, /* leading underscore */
|
| 1485 |
|
|
' ', /* ar_pad_char */
|
| 1486 |
|
|
15, /* ar_max_namelen */
|
| 1487 |
148 |
khays |
0, /* match priority. */
|
| 1488 |
14 |
khays |
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
| 1489 |
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
| 1490 |
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16,
|
| 1491 |
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
| 1492 |
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
| 1493 |
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16,
|
| 1494 |
|
|
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
| 1495 |
|
|
bfd_generic_archive_p, _bfd_dummy_target},
|
| 1496 |
|
|
{bfd_false, _bfd_ecoff_mkobject, /* bfd_set_format */
|
| 1497 |
|
|
_bfd_generic_mkarchive, bfd_false},
|
| 1498 |
|
|
{bfd_false, _bfd_ecoff_write_object_contents, /* bfd_write_contents */
|
| 1499 |
|
|
_bfd_write_archive_contents, bfd_false},
|
| 1500 |
|
|
|
| 1501 |
|
|
BFD_JUMP_TABLE_GENERIC (_bfd_ecoff),
|
| 1502 |
|
|
BFD_JUMP_TABLE_COPY (_bfd_ecoff),
|
| 1503 |
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
| 1504 |
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_ecoff),
|
| 1505 |
|
|
BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff),
|
| 1506 |
|
|
BFD_JUMP_TABLE_RELOCS (_bfd_ecoff),
|
| 1507 |
|
|
BFD_JUMP_TABLE_WRITE (_bfd_ecoff),
|
| 1508 |
|
|
BFD_JUMP_TABLE_LINK (_bfd_ecoff),
|
| 1509 |
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
| 1510 |
|
|
|
| 1511 |
|
|
& ecoff_little_vec,
|
| 1512 |
|
|
|
| 1513 |
|
|
(PTR) &mips_ecoff_backend_data
|
| 1514 |
|
|
};
|
| 1515 |
|
|
|
| 1516 |
|
|
const bfd_target ecoff_biglittle_vec =
|
| 1517 |
|
|
{
|
| 1518 |
|
|
"ecoff-biglittlemips", /* name */
|
| 1519 |
|
|
bfd_target_ecoff_flavour,
|
| 1520 |
|
|
BFD_ENDIAN_LITTLE, /* data byte order is little */
|
| 1521 |
|
|
BFD_ENDIAN_BIG, /* header byte order is big */
|
| 1522 |
|
|
|
| 1523 |
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
| 1524 |
|
|
HAS_LINENO | HAS_DEBUG |
|
| 1525 |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
| 1526 |
|
|
|
| 1527 |
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
|
| 1528 |
|
|
0, /* leading underscore */
|
| 1529 |
|
|
' ', /* ar_pad_char */
|
| 1530 |
|
|
15, /* ar_max_namelen */
|
| 1531 |
148 |
khays |
0, /* match priority. */
|
| 1532 |
14 |
khays |
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
| 1533 |
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
| 1534 |
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
| 1535 |
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
| 1536 |
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
| 1537 |
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
|
| 1538 |
|
|
|
| 1539 |
|
|
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
| 1540 |
|
|
bfd_generic_archive_p, _bfd_dummy_target},
|
| 1541 |
|
|
{bfd_false, _bfd_ecoff_mkobject, /* bfd_set_format */
|
| 1542 |
|
|
_bfd_generic_mkarchive, bfd_false},
|
| 1543 |
|
|
{bfd_false, _bfd_ecoff_write_object_contents, /* bfd_write_contents */
|
| 1544 |
|
|
_bfd_write_archive_contents, bfd_false},
|
| 1545 |
|
|
|
| 1546 |
|
|
BFD_JUMP_TABLE_GENERIC (_bfd_ecoff),
|
| 1547 |
|
|
BFD_JUMP_TABLE_COPY (_bfd_ecoff),
|
| 1548 |
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
| 1549 |
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_ecoff),
|
| 1550 |
|
|
BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff),
|
| 1551 |
|
|
BFD_JUMP_TABLE_RELOCS (_bfd_ecoff),
|
| 1552 |
|
|
BFD_JUMP_TABLE_WRITE (_bfd_ecoff),
|
| 1553 |
|
|
BFD_JUMP_TABLE_LINK (_bfd_ecoff),
|
| 1554 |
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
| 1555 |
|
|
|
| 1556 |
|
|
NULL,
|
| 1557 |
|
|
|
| 1558 |
|
|
(PTR) &mips_ecoff_backend_data
|
| 1559 |
|
|
};
|
