1814 lines
58 KiB
C
1814 lines
58 KiB
C
/* MIPS-specific support for 32-bit ELF
|
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Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
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2003, 2004, 2005, 2007 Free Software Foundation, Inc.
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Most of the information added by Ian Lance Taylor, Cygnus Support,
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<ian@cygnus.com>.
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N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
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<mark@codesourcery.com>
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Traditional MIPS targets support added by Koundinya.K, Dansk Data
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Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
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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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/* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
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different MIPS ELF from other targets. This matters when linking.
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This file supports both, switching at runtime. */
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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 "bfdlink.h"
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#include "genlink.h"
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#include "elf-bfd.h"
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#include "elfxx-mips.h"
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#include "elf/mips.h"
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#include "elf-vxworks.h"
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/* Get the ECOFF swapping routines. */
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#include "coff/sym.h"
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#include "coff/symconst.h"
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#include "coff/internal.h"
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#include "coff/ecoff.h"
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#include "coff/mips.h"
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#define ECOFF_SIGNED_32
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#include "ecoffswap.h"
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static bfd_reloc_status_type gprel32_with_gp
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(bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
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static bfd_reloc_status_type mips_elf_gprel32_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type mips32_64bit_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
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(bfd *, bfd_reloc_code_real_type);
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static reloc_howto_type *mips_elf32_rtype_to_howto
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(unsigned int, bfd_boolean);
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static void mips_info_to_howto_rel
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(bfd *, arelent *, Elf_Internal_Rela *);
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static void mips_info_to_howto_rela
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(bfd *, arelent *, Elf_Internal_Rela *);
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static bfd_boolean mips_elf_sym_is_global
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(bfd *, asymbol *);
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static bfd_boolean mips_elf32_object_p
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(bfd *);
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static bfd_boolean mips_elf_is_local_label_name
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(bfd *, const char *);
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static bfd_reloc_status_type mips16_gprel_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type mips_elf_final_gp
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(bfd *, asymbol *, bfd_boolean, char **, bfd_vma *);
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static bfd_boolean mips_elf_assign_gp
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(bfd *, bfd_vma *);
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static bfd_boolean elf32_mips_grok_prstatus
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(bfd *, Elf_Internal_Note *);
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static bfd_boolean elf32_mips_grok_psinfo
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(bfd *, Elf_Internal_Note *);
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static irix_compat_t elf32_mips_irix_compat
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(bfd *);
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extern const bfd_target bfd_elf32_bigmips_vec;
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extern const bfd_target bfd_elf32_littlemips_vec;
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/* Nonzero if ABFD is using the N32 ABI. */
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#define ABI_N32_P(abfd) \
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((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
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/* Whether we are trying to be compatible with IRIX at all. */
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#define SGI_COMPAT(abfd) \
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(elf32_mips_irix_compat (abfd) != ict_none)
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/* The number of local .got entries we reserve. */
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#define MIPS_RESERVED_GOTNO (2)
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/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
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from smaller values. Start with zero, widen, *then* decrement. */
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#define MINUS_ONE (((bfd_vma)0) - 1)
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/* The relocation table used for SHT_REL sections. */
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static reloc_howto_type elf_mips_howto_table_rel[] =
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{
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/* No relocation. */
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HOWTO (R_MIPS_NONE, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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_bfd_mips_elf_generic_reloc, /* special_function */
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"R_MIPS_NONE", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* 16 bit relocation. */
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HOWTO (R_MIPS_16, /* 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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_bfd_mips_elf_generic_reloc, /* special_function */
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"R_MIPS_16", /* name */
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TRUE, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* 32 bit relocation. */
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HOWTO (R_MIPS_32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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_bfd_mips_elf_generic_reloc, /* special_function */
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"R_MIPS_32", /* name */
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TRUE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* 32 bit symbol relative relocation. */
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HOWTO (R_MIPS_REL32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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_bfd_mips_elf_generic_reloc, /* special_function */
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"R_MIPS_REL32", /* 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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/* 26 bit jump address. */
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HOWTO (R_MIPS_26, /* 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 + 4. */
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_bfd_mips_elf_generic_reloc, /* special_function */
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"R_MIPS_26", /* name */
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TRUE, /* partial_inplace */
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0x03ffffff, /* src_mask */
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0x03ffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* High 16 bits of symbol value. */
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HOWTO (R_MIPS_HI16, /* 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_dont, /* complain_on_overflow */
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_bfd_mips_elf_hi16_reloc, /* special_function */
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"R_MIPS_HI16", /* name */
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TRUE, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* Low 16 bits of symbol value. */
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HOWTO (R_MIPS_LO16, /* 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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_bfd_mips_elf_lo16_reloc, /* special_function */
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"R_MIPS_LO16", /* name */
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TRUE, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* GP relative reference. */
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HOWTO (R_MIPS_GPREL16, /* 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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_bfd_mips_elf32_gprel16_reloc, /* special_function */
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"R_MIPS_GPREL16", /* name */
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TRUE, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* Reference to literal section. */
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HOWTO (R_MIPS_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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_bfd_mips_elf32_gprel16_reloc, /* special_function */
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"R_MIPS_LITERAL", /* name */
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TRUE, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* Reference to global offset table. */
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HOWTO (R_MIPS_GOT16, /* 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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_bfd_mips_elf_got16_reloc, /* special_function */
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"R_MIPS_GOT16", /* name */
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TRUE, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* 16 bit PC relative reference. Note that the ABI document has a typo
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and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
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We do the right thing here. */
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HOWTO (R_MIPS_PC16, /* 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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_bfd_mips_elf_generic_reloc, /* special_function */
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"R_MIPS_PC16", /* name */
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TRUE, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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||
|
||
/* 16 bit call through global offset table. */
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||
HOWTO (R_MIPS_CALL16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
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||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
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"R_MIPS_CALL16", /* name */
|
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TRUE, /* partial_inplace */
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||
0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
|
||
|
||
/* 32 bit GP relative reference. */
|
||
HOWTO (R_MIPS_GPREL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
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||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
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||
mips_elf_gprel32_reloc, /* special_function */
|
||
"R_MIPS_GPREL32", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
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||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* The remaining relocs are defined on Irix 5, although they are
|
||
not defined by the ABI. */
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||
EMPTY_HOWTO (13),
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EMPTY_HOWTO (14),
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EMPTY_HOWTO (15),
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||
|
||
/* A 5 bit shift field. */
|
||
HOWTO (R_MIPS_SHIFT5, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
5, /* bitsize */
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||
FALSE, /* pc_relative */
|
||
6, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SHIFT5", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x000007c0, /* src_mask */
|
||
0x000007c0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 6 bit shift field. */
|
||
/* FIXME: This is not handled correctly; a special function is
|
||
needed to put the most significant bit in the right place. */
|
||
HOWTO (R_MIPS_SHIFT6, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
6, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
6, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SHIFT6", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x000007c4, /* src_mask */
|
||
0x000007c4, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 64 bit relocation. */
|
||
HOWTO (R_MIPS_64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips32_64bit_reloc, /* special_function */
|
||
"R_MIPS_64", /* name */
|
||
TRUE, /* partial_inplace */
|
||
MINUS_ONE, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Displacement in the global offset table. */
|
||
HOWTO (R_MIPS_GOT_DISP, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_DISP", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Displacement to page pointer in the global offset table. */
|
||
HOWTO (R_MIPS_GOT_PAGE, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_PAGE", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Offset from page pointer in the global offset table. */
|
||
HOWTO (R_MIPS_GOT_OFST, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_OFST", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* High 16 bits of displacement in global offset table. */
|
||
HOWTO (R_MIPS_GOT_HI16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_HI16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Low 16 bits of displacement in global offset table. */
|
||
HOWTO (R_MIPS_GOT_LO16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_LO16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 64 bit subtraction. Used in the N32 ABI. */
|
||
HOWTO (R_MIPS_SUB, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SUB", /* name */
|
||
TRUE, /* partial_inplace */
|
||
MINUS_ONE, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Used to cause the linker to insert and delete instructions? */
|
||
EMPTY_HOWTO (R_MIPS_INSERT_A),
|
||
EMPTY_HOWTO (R_MIPS_INSERT_B),
|
||
EMPTY_HOWTO (R_MIPS_DELETE),
|
||
|
||
/* Get the higher value of a 64 bit addend. */
|
||
HOWTO (R_MIPS_HIGHER, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_HIGHER", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Get the highest value of a 64 bit addend. */
|
||
HOWTO (R_MIPS_HIGHEST, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_HIGHEST", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* High 16 bits of displacement in global offset table. */
|
||
HOWTO (R_MIPS_CALL_HI16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_CALL_HI16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Low 16 bits of displacement in global offset table. */
|
||
HOWTO (R_MIPS_CALL_LO16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_CALL_LO16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* Section displacement. */
|
||
HOWTO (R_MIPS_SCN_DISP, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SCN_DISP", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
EMPTY_HOWTO (R_MIPS_REL16),
|
||
EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
|
||
EMPTY_HOWTO (R_MIPS_PJUMP),
|
||
EMPTY_HOWTO (R_MIPS_RELGOT),
|
||
|
||
/* Protected jump conversion. This is an optimization hint. No
|
||
relocation is required for correctness. */
|
||
HOWTO (R_MIPS_JALR, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_JALR", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x00000000, /* src_mask */
|
||
0x00000000, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* TLS GD/LD dynamic relocations. */
|
||
HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_TLS_DTPMOD32", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
HOWTO (R_MIPS_TLS_DTPREL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_TLS_DTPREL32", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
|
||
EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
|
||
|
||
/* TLS general dynamic variable reference. */
|
||
HOWTO (R_MIPS_TLS_GD, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_TLS_GD", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* TLS local dynamic variable reference. */
|
||
HOWTO (R_MIPS_TLS_LDM, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_TLS_LDM", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* TLS local dynamic offset. */
|
||
HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_TLS_DTPREL_HI16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* TLS local dynamic offset. */
|
||
HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_TLS_DTPREL_LO16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* TLS thread pointer offset. */
|
||
HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_TLS_GOTTPREL", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* TLS IE dynamic relocations. */
|
||
HOWTO (R_MIPS_TLS_TPREL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_TLS_TPREL32", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
|
||
|
||
/* TLS thread pointer offset. */
|
||
HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_TLS_TPREL_HI16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* TLS thread pointer offset. */
|
||
HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_TLS_TPREL_LO16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* 32 bit relocation with no addend. */
|
||
HOWTO (R_MIPS_GLOB_DAT, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GLOB_DAT", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
};
|
||
|
||
/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
|
||
is a hack to make the linker think that we need 64 bit values. */
|
||
static reloc_howto_type elf_mips_ctor64_howto =
|
||
HOWTO (R_MIPS_64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips32_64bit_reloc, /* special_function */
|
||
"R_MIPS_64", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE); /* pcrel_offset */
|
||
|
||
static reloc_howto_type elf_mips16_howto_table_rel[] =
|
||
{
|
||
/* The reloc used for the mips16 jump instruction. */
|
||
HOWTO (R_MIPS16_26, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
26, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
/* This needs complex overflow
|
||
detection, because the upper four
|
||
bits must match the PC. */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS16_26", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x3ffffff, /* src_mask */
|
||
0x3ffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* The reloc used for the mips16 gprel instruction. */
|
||
HOWTO (R_MIPS16_GPREL, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips16_gprel_reloc, /* special_function */
|
||
"R_MIPS16_GPREL", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A placeholder for MIPS16 reference to global offset table. */
|
||
EMPTY_HOWTO (R_MIPS16_GOT16),
|
||
|
||
/* A placeholder for MIPS16 16 bit call through global offset table. */
|
||
EMPTY_HOWTO (R_MIPS16_CALL16),
|
||
|
||
/* MIPS16 high 16 bits of symbol value. */
|
||
HOWTO (R_MIPS16_HI16, /* type */
|
||
16, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_hi16_reloc, /* special_function */
|
||
"R_MIPS16_HI16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* MIPS16 low 16 bits of symbol value. */
|
||
HOWTO (R_MIPS16_LO16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_mips_elf_lo16_reloc, /* special_function */
|
||
"R_MIPS16_LO16", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
};
|
||
|
||
/* 16 bit offset for pc-relative branches. */
|
||
static reloc_howto_type elf_mips_gnu_rel16_s2 =
|
||
HOWTO (R_MIPS_GNU_REL16_S2, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GNU_REL16_S2", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
TRUE); /* pcrel_offset */
|
||
|
||
/* 32 bit pc-relative. This was a GNU extension used by embedded-PIC.
|
||
It was co-opted by mips-linux for exception-handling data. It is no
|
||
longer used, but should continue to be supported by the linker for
|
||
backward compatibility. (GCC stopped using it in May, 2004.) */
|
||
static reloc_howto_type elf_mips_gnu_pcrel32 =
|
||
HOWTO (R_MIPS_PC32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
_bfd_mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_PC32", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
TRUE); /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable hierarchy */
|
||
static reloc_howto_type elf_mips_gnu_vtinherit_howto =
|
||
HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"R_MIPS_GNU_VTINHERIT", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE); /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable member usage */
|
||
static reloc_howto_type elf_mips_gnu_vtentry_howto =
|
||
HOWTO (R_MIPS_GNU_VTENTRY, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
|
||
"R_MIPS_GNU_VTENTRY", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE); /* pcrel_offset */
|
||
|
||
/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
|
||
dangerous relocation. */
|
||
|
||
static bfd_boolean
|
||
mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
|
||
{
|
||
unsigned int count;
|
||
asymbol **sym;
|
||
unsigned int i;
|
||
|
||
/* If we've already figured out what GP will be, just return it. */
|
||
*pgp = _bfd_get_gp_value (output_bfd);
|
||
if (*pgp)
|
||
return TRUE;
|
||
|
||
count = bfd_get_symcount (output_bfd);
|
||
sym = bfd_get_outsymbols (output_bfd);
|
||
|
||
/* The linker script will have created a symbol named `_gp' with the
|
||
appropriate value. */
|
||
if (sym == NULL)
|
||
i = count;
|
||
else
|
||
{
|
||
for (i = 0; i < count; i++, sym++)
|
||
{
|
||
register const char *name;
|
||
|
||
name = bfd_asymbol_name (*sym);
|
||
if (*name == '_' && strcmp (name, "_gp") == 0)
|
||
{
|
||
*pgp = bfd_asymbol_value (*sym);
|
||
_bfd_set_gp_value (output_bfd, *pgp);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (i >= count)
|
||
{
|
||
/* Only get the error once. */
|
||
*pgp = 4;
|
||
_bfd_set_gp_value (output_bfd, *pgp);
|
||
return FALSE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* We have to figure out the gp value, so that we can adjust the
|
||
symbol value correctly. We look up the symbol _gp in the output
|
||
BFD. If we can't find it, we're stuck. We cache it in the ELF
|
||
target data. We don't need to adjust the symbol value for an
|
||
external symbol if we are producing relocatable output. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
|
||
char **error_message, bfd_vma *pgp)
|
||
{
|
||
if (bfd_is_und_section (symbol->section)
|
||
&& ! relocatable)
|
||
{
|
||
*pgp = 0;
|
||
return bfd_reloc_undefined;
|
||
}
|
||
|
||
*pgp = _bfd_get_gp_value (output_bfd);
|
||
if (*pgp == 0
|
||
&& (! relocatable
|
||
|| (symbol->flags & BSF_SECTION_SYM) != 0))
|
||
{
|
||
if (relocatable)
|
||
{
|
||
/* Make up a value. */
|
||
*pgp = symbol->section->output_section->vma + 0x4000;
|
||
_bfd_set_gp_value (output_bfd, *pgp);
|
||
}
|
||
else if (!mips_elf_assign_gp (output_bfd, pgp))
|
||
{
|
||
*error_message =
|
||
(char *) _("GP relative relocation when _gp not defined");
|
||
return bfd_reloc_dangerous;
|
||
}
|
||
}
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
|
||
become the offset from the gp register. This function also handles
|
||
R_MIPS_LITERAL relocations, although those can be handled more
|
||
cleverly because the entries in the .lit8 and .lit4 sections can be
|
||
merged. */
|
||
|
||
bfd_reloc_status_type
|
||
_bfd_mips_elf32_gprel16_reloc (bfd *abfd, arelent *reloc_entry,
|
||
asymbol *symbol, void *data,
|
||
asection *input_section, bfd *output_bfd,
|
||
char **error_message)
|
||
{
|
||
bfd_boolean relocatable;
|
||
bfd_reloc_status_type ret;
|
||
bfd_vma gp;
|
||
|
||
/* R_MIPS_LITERAL relocations are defined for local symbols only. */
|
||
if (reloc_entry->howto->type == R_MIPS_LITERAL
|
||
&& output_bfd != NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
||
&& (symbol->flags & BSF_LOCAL) != 0)
|
||
{
|
||
*error_message = (char *)
|
||
_("literal relocation occurs for an external symbol");
|
||
return bfd_reloc_outofrange;
|
||
}
|
||
|
||
if (output_bfd != NULL)
|
||
relocatable = TRUE;
|
||
else
|
||
{
|
||
relocatable = FALSE;
|
||
output_bfd = symbol->section->output_section->owner;
|
||
}
|
||
|
||
ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
|
||
&gp);
|
||
if (ret != bfd_reloc_ok)
|
||
return ret;
|
||
|
||
return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
|
||
input_section, relocatable,
|
||
data, gp);
|
||
}
|
||
|
||
/* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
|
||
become the offset from the gp register. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
||
void *data, asection *input_section, bfd *output_bfd,
|
||
char **error_message)
|
||
{
|
||
bfd_boolean relocatable;
|
||
bfd_reloc_status_type ret;
|
||
bfd_vma gp;
|
||
|
||
/* R_MIPS_GPREL32 relocations are defined for local symbols only. */
|
||
if (output_bfd != NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
||
&& (symbol->flags & BSF_LOCAL) != 0)
|
||
{
|
||
*error_message = (char *)
|
||
_("32bits gp relative relocation occurs for an external symbol");
|
||
return bfd_reloc_outofrange;
|
||
}
|
||
|
||
if (output_bfd != NULL)
|
||
relocatable = TRUE;
|
||
else
|
||
{
|
||
relocatable = FALSE;
|
||
output_bfd = symbol->section->output_section->owner;
|
||
}
|
||
|
||
ret = mips_elf_final_gp (output_bfd, symbol, relocatable,
|
||
error_message, &gp);
|
||
if (ret != bfd_reloc_ok)
|
||
return ret;
|
||
|
||
return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
|
||
relocatable, data, gp);
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
|
||
asection *input_section, bfd_boolean relocatable,
|
||
void *data, bfd_vma gp)
|
||
{
|
||
bfd_vma relocation;
|
||
bfd_vma val;
|
||
|
||
if (bfd_is_com_section (symbol->section))
|
||
relocation = 0;
|
||
else
|
||
relocation = symbol->value;
|
||
|
||
relocation += symbol->section->output_section->vma;
|
||
relocation += symbol->section->output_offset;
|
||
|
||
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
|
||
return bfd_reloc_outofrange;
|
||
|
||
/* Set val to the offset into the section or symbol. */
|
||
val = reloc_entry->addend;
|
||
|
||
if (reloc_entry->howto->partial_inplace)
|
||
val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
/* Adjust val for the final section location and GP value. If we
|
||
are producing relocatable output, we don't want to do this for
|
||
an external symbol. */
|
||
if (! relocatable
|
||
|| (symbol->flags & BSF_SECTION_SYM) != 0)
|
||
val += relocation - gp;
|
||
|
||
if (reloc_entry->howto->partial_inplace)
|
||
bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
|
||
else
|
||
reloc_entry->addend = val;
|
||
|
||
if (relocatable)
|
||
reloc_entry->address += input_section->output_offset;
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
|
||
generated when addresses are 64 bits. The upper 32 bits are a simple
|
||
sign extension. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips32_64bit_reloc (bfd *abfd, arelent *reloc_entry,
|
||
asymbol *symbol ATTRIBUTE_UNUSED,
|
||
void *data, asection *input_section,
|
||
bfd *output_bfd, char **error_message)
|
||
{
|
||
bfd_reloc_status_type r;
|
||
arelent reloc32;
|
||
unsigned long val;
|
||
bfd_size_type addr;
|
||
|
||
/* Do a normal 32 bit relocation on the lower 32 bits. */
|
||
reloc32 = *reloc_entry;
|
||
if (bfd_big_endian (abfd))
|
||
reloc32.address += 4;
|
||
reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32];
|
||
r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
|
||
output_bfd, error_message);
|
||
|
||
/* Sign extend into the upper 32 bits. */
|
||
val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
|
||
if ((val & 0x80000000) != 0)
|
||
val = 0xffffffff;
|
||
else
|
||
val = 0;
|
||
addr = reloc_entry->address;
|
||
if (bfd_little_endian (abfd))
|
||
addr += 4;
|
||
bfd_put_32 (abfd, val, (bfd_byte *) data + addr);
|
||
|
||
return r;
|
||
}
|
||
|
||
/* Handle a mips16 GP relative reloc. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
||
void *data, asection *input_section, bfd *output_bfd,
|
||
char **error_message)
|
||
{
|
||
bfd_boolean relocatable;
|
||
bfd_reloc_status_type ret;
|
||
bfd_byte *location;
|
||
bfd_vma gp;
|
||
|
||
/* If we're relocating, and this is an external symbol, we don't want
|
||
to change anything. */
|
||
if (output_bfd != NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
||
&& (symbol->flags & BSF_LOCAL) != 0)
|
||
{
|
||
reloc_entry->address += input_section->output_offset;
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
if (output_bfd != NULL)
|
||
relocatable = TRUE;
|
||
else
|
||
{
|
||
relocatable = FALSE;
|
||
output_bfd = symbol->section->output_section->owner;
|
||
}
|
||
|
||
ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
|
||
&gp);
|
||
if (ret != bfd_reloc_ok)
|
||
return ret;
|
||
|
||
location = (bfd_byte *) data + reloc_entry->address;
|
||
_bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
|
||
location);
|
||
ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
|
||
input_section, relocatable,
|
||
data, gp);
|
||
_bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
|
||
location);
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* A mapping from BFD reloc types to MIPS ELF reloc types. */
|
||
|
||
struct elf_reloc_map {
|
||
bfd_reloc_code_real_type bfd_val;
|
||
enum elf_mips_reloc_type elf_val;
|
||
};
|
||
|
||
static const struct elf_reloc_map mips_reloc_map[] =
|
||
{
|
||
{ BFD_RELOC_NONE, R_MIPS_NONE },
|
||
{ BFD_RELOC_16, R_MIPS_16 },
|
||
{ BFD_RELOC_32, R_MIPS_32 },
|
||
/* There is no BFD reloc for R_MIPS_REL32. */
|
||
{ BFD_RELOC_64, R_MIPS_64 },
|
||
{ BFD_RELOC_MIPS_JMP, R_MIPS_26 },
|
||
{ BFD_RELOC_HI16_S, R_MIPS_HI16 },
|
||
{ BFD_RELOC_LO16, R_MIPS_LO16 },
|
||
{ BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
|
||
{ BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
|
||
{ BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
|
||
{ BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
|
||
{ BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
|
||
{ BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
|
||
{ BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
|
||
{ BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
|
||
{ BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
|
||
{ BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
|
||
{ BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
|
||
{ BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
|
||
{ BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
|
||
{ BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
|
||
{ BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
|
||
{ BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
|
||
{ BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
|
||
{ BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
|
||
{ BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
|
||
{ BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
|
||
{ BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
|
||
{ BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
|
||
{ BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
|
||
{ BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
|
||
{ BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
|
||
{ BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
|
||
{ BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
|
||
};
|
||
|
||
static const struct elf_reloc_map mips16_reloc_map[] =
|
||
{
|
||
{ BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
|
||
{ BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
|
||
{ BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
|
||
{ BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
|
||
};
|
||
|
||
/* Given a BFD reloc type, return a howto structure. */
|
||
|
||
static reloc_howto_type *
|
||
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
|
||
{
|
||
unsigned int i;
|
||
reloc_howto_type *howto_table = elf_mips_howto_table_rel;
|
||
reloc_howto_type *howto16_table = elf_mips16_howto_table_rel;
|
||
|
||
for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
|
||
i++)
|
||
{
|
||
if (mips_reloc_map[i].bfd_val == code)
|
||
return &howto_table[(int) mips_reloc_map[i].elf_val];
|
||
}
|
||
|
||
for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
|
||
i++)
|
||
{
|
||
if (mips16_reloc_map[i].bfd_val == code)
|
||
return &howto16_table[(int) mips16_reloc_map[i].elf_val];
|
||
}
|
||
|
||
switch (code)
|
||
{
|
||
default:
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return NULL;
|
||
|
||
case BFD_RELOC_CTOR:
|
||
/* We need to handle BFD_RELOC_CTOR specially.
|
||
Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
|
||
size of addresses of the ABI. */
|
||
if ((elf_elfheader (abfd)->e_flags & (E_MIPS_ABI_O64
|
||
| E_MIPS_ABI_EABI64)) != 0)
|
||
return &elf_mips_ctor64_howto;
|
||
else
|
||
return &howto_table[(int) R_MIPS_32];
|
||
|
||
case BFD_RELOC_VTABLE_INHERIT:
|
||
return &elf_mips_gnu_vtinherit_howto;
|
||
case BFD_RELOC_VTABLE_ENTRY:
|
||
return &elf_mips_gnu_vtentry_howto;
|
||
case BFD_RELOC_32_PCREL:
|
||
return &elf_mips_gnu_pcrel32;
|
||
}
|
||
}
|
||
|
||
static reloc_howto_type *
|
||
bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
||
const char *r_name)
|
||
{
|
||
unsigned int i;
|
||
|
||
for (i = 0;
|
||
i < (sizeof (elf_mips_howto_table_rel)
|
||
/ sizeof (elf_mips_howto_table_rel[0]));
|
||
i++)
|
||
if (elf_mips_howto_table_rel[i].name != NULL
|
||
&& strcasecmp (elf_mips_howto_table_rel[i].name, r_name) == 0)
|
||
return &elf_mips_howto_table_rel[i];
|
||
|
||
for (i = 0;
|
||
i < (sizeof (elf_mips16_howto_table_rel)
|
||
/ sizeof (elf_mips16_howto_table_rel[0]));
|
||
i++)
|
||
if (elf_mips16_howto_table_rel[i].name != NULL
|
||
&& strcasecmp (elf_mips16_howto_table_rel[i].name, r_name) == 0)
|
||
return &elf_mips16_howto_table_rel[i];
|
||
|
||
if (strcasecmp (elf_mips_gnu_pcrel32.name, r_name) == 0)
|
||
return &elf_mips_gnu_pcrel32;
|
||
if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0)
|
||
return &elf_mips_gnu_rel16_s2;
|
||
if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0)
|
||
return &elf_mips_gnu_vtinherit_howto;
|
||
if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0)
|
||
return &elf_mips_gnu_vtentry_howto;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
|
||
|
||
static reloc_howto_type *
|
||
mips_elf32_rtype_to_howto (unsigned int r_type,
|
||
bfd_boolean rela_p ATTRIBUTE_UNUSED)
|
||
{
|
||
switch (r_type)
|
||
{
|
||
case R_MIPS_GNU_VTINHERIT:
|
||
return &elf_mips_gnu_vtinherit_howto;
|
||
case R_MIPS_GNU_VTENTRY:
|
||
return &elf_mips_gnu_vtentry_howto;
|
||
case R_MIPS_GNU_REL16_S2:
|
||
return &elf_mips_gnu_rel16_s2;
|
||
case R_MIPS_PC32:
|
||
return &elf_mips_gnu_pcrel32;
|
||
default:
|
||
if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
|
||
return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
|
||
BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
|
||
return &elf_mips_howto_table_rel[r_type];
|
||
}
|
||
}
|
||
|
||
/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
|
||
|
||
static void
|
||
mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
|
||
{
|
||
const struct elf_backend_data *bed;
|
||
unsigned int r_type;
|
||
|
||
r_type = ELF32_R_TYPE (dst->r_info);
|
||
bed = get_elf_backend_data (abfd);
|
||
cache_ptr->howto = bed->elf_backend_mips_rtype_to_howto (r_type, FALSE);
|
||
|
||
/* The addend for a GPREL16 or LITERAL relocation comes from the GP
|
||
value for the object file. We get the addend now, rather than
|
||
when we do the relocation, because the symbol manipulations done
|
||
by the linker may cause us to lose track of the input BFD. */
|
||
if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
|
||
&& (r_type == (unsigned int) R_MIPS_GPREL16
|
||
|| r_type == (unsigned int) R_MIPS_LITERAL))
|
||
cache_ptr->addend = elf_gp (abfd);
|
||
}
|
||
|
||
/* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
|
||
|
||
static void
|
||
mips_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
|
||
{
|
||
mips_info_to_howto_rel (abfd, cache_ptr, dst);
|
||
|
||
/* If we ever need to do any extra processing with dst->r_addend
|
||
(the field omitted in an Elf_Internal_Rel) we can do it here. */
|
||
}
|
||
|
||
/* Determine whether a symbol is global for the purposes of splitting
|
||
the symbol table into global symbols and local symbols. At least
|
||
on Irix 5, this split must be between section symbols and all other
|
||
symbols. On most ELF targets the split is between static symbols
|
||
and externally visible symbols. */
|
||
|
||
static bfd_boolean
|
||
mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
|
||
{
|
||
if (SGI_COMPAT (abfd))
|
||
return (sym->flags & BSF_SECTION_SYM) == 0;
|
||
else
|
||
return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
|
||
|| bfd_is_und_section (bfd_get_section (sym))
|
||
|| bfd_is_com_section (bfd_get_section (sym)));
|
||
}
|
||
|
||
/* Set the right machine number for a MIPS ELF file. */
|
||
|
||
static bfd_boolean
|
||
mips_elf32_object_p (bfd *abfd)
|
||
{
|
||
unsigned long mach;
|
||
|
||
/* Irix 5 and 6 are broken. Object file symbol tables are not always
|
||
sorted correctly such that local symbols precede global symbols,
|
||
and the sh_info field in the symbol table is not always right. */
|
||
if (SGI_COMPAT (abfd))
|
||
elf_bad_symtab (abfd) = TRUE;
|
||
|
||
if (ABI_N32_P (abfd))
|
||
return FALSE;
|
||
|
||
mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
|
||
bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* MIPS ELF local labels start with '$', not 'L'. */
|
||
|
||
static bfd_boolean
|
||
mips_elf_is_local_label_name (bfd *abfd, const char *name)
|
||
{
|
||
if (name[0] == '$')
|
||
return TRUE;
|
||
|
||
/* On Irix 6, the labels go back to starting with '.', so we accept
|
||
the generic ELF local label syntax as well. */
|
||
return _bfd_elf_is_local_label_name (abfd, name);
|
||
}
|
||
|
||
/* Support for core dump NOTE sections. */
|
||
static bfd_boolean
|
||
elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
|
||
{
|
||
int offset;
|
||
unsigned int size;
|
||
|
||
switch (note->descsz)
|
||
{
|
||
default:
|
||
return FALSE;
|
||
|
||
case 256: /* Linux/MIPS */
|
||
/* pr_cursig */
|
||
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
|
||
|
||
/* pr_pid */
|
||
elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
|
||
|
||
/* pr_reg */
|
||
offset = 72;
|
||
size = 180;
|
||
|
||
break;
|
||
}
|
||
|
||
/* Make a ".reg/999" section. */
|
||
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
|
||
size, note->descpos + offset);
|
||
}
|
||
|
||
static bfd_boolean
|
||
elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
|
||
{
|
||
switch (note->descsz)
|
||
{
|
||
default:
|
||
return FALSE;
|
||
|
||
case 128: /* Linux/MIPS elf_prpsinfo */
|
||
elf_tdata (abfd)->core_program
|
||
= _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
|
||
elf_tdata (abfd)->core_command
|
||
= _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
|
||
}
|
||
|
||
/* Note that for some reason, a spurious space is tacked
|
||
onto the end of the args in some (at least one anyway)
|
||
implementations, so strip it off if it exists. */
|
||
|
||
{
|
||
char *command = elf_tdata (abfd)->core_command;
|
||
int n = strlen (command);
|
||
|
||
if (0 < n && command[n - 1] == ' ')
|
||
command[n - 1] = '\0';
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Depending on the target vector we generate some version of Irix
|
||
executables or "normal" MIPS ELF ABI executables. */
|
||
static irix_compat_t
|
||
elf32_mips_irix_compat (bfd *abfd)
|
||
{
|
||
if ((abfd->xvec == &bfd_elf32_bigmips_vec)
|
||
|| (abfd->xvec == &bfd_elf32_littlemips_vec))
|
||
return ict_irix5;
|
||
else
|
||
return ict_none;
|
||
}
|
||
|
||
/* ECOFF swapping routines. These are used when dealing with the
|
||
.mdebug section, which is in the ECOFF debugging format. */
|
||
static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
|
||
/* Symbol table magic number. */
|
||
magicSym,
|
||
/* Alignment of debugging information. E.g., 4. */
|
||
4,
|
||
/* Sizes of external symbolic information. */
|
||
sizeof (struct hdr_ext),
|
||
sizeof (struct dnr_ext),
|
||
sizeof (struct pdr_ext),
|
||
sizeof (struct sym_ext),
|
||
sizeof (struct opt_ext),
|
||
sizeof (struct fdr_ext),
|
||
sizeof (struct rfd_ext),
|
||
sizeof (struct ext_ext),
|
||
/* Functions to swap in external symbolic data. */
|
||
ecoff_swap_hdr_in,
|
||
ecoff_swap_dnr_in,
|
||
ecoff_swap_pdr_in,
|
||
ecoff_swap_sym_in,
|
||
ecoff_swap_opt_in,
|
||
ecoff_swap_fdr_in,
|
||
ecoff_swap_rfd_in,
|
||
ecoff_swap_ext_in,
|
||
_bfd_ecoff_swap_tir_in,
|
||
_bfd_ecoff_swap_rndx_in,
|
||
/* Functions to swap out external symbolic data. */
|
||
ecoff_swap_hdr_out,
|
||
ecoff_swap_dnr_out,
|
||
ecoff_swap_pdr_out,
|
||
ecoff_swap_sym_out,
|
||
ecoff_swap_opt_out,
|
||
ecoff_swap_fdr_out,
|
||
ecoff_swap_rfd_out,
|
||
ecoff_swap_ext_out,
|
||
_bfd_ecoff_swap_tir_out,
|
||
_bfd_ecoff_swap_rndx_out,
|
||
/* Function to read in symbolic data. */
|
||
_bfd_mips_elf_read_ecoff_info
|
||
};
|
||
|
||
#define ELF_ARCH bfd_arch_mips
|
||
#define ELF_MACHINE_CODE EM_MIPS
|
||
|
||
#define elf_backend_collect TRUE
|
||
#define elf_backend_type_change_ok TRUE
|
||
#define elf_backend_can_gc_sections TRUE
|
||
#define elf_info_to_howto mips_info_to_howto_rela
|
||
#define elf_info_to_howto_rel mips_info_to_howto_rel
|
||
#define elf_backend_sym_is_global mips_elf_sym_is_global
|
||
#define elf_backend_object_p mips_elf32_object_p
|
||
#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
|
||
#define elf_backend_section_processing _bfd_mips_elf_section_processing
|
||
#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
|
||
#define elf_backend_fake_sections _bfd_mips_elf_fake_sections
|
||
#define elf_backend_section_from_bfd_section \
|
||
_bfd_mips_elf_section_from_bfd_section
|
||
#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
|
||
#define elf_backend_link_output_symbol_hook \
|
||
_bfd_mips_elf_link_output_symbol_hook
|
||
#define elf_backend_create_dynamic_sections \
|
||
_bfd_mips_elf_create_dynamic_sections
|
||
#define elf_backend_check_relocs _bfd_mips_elf_check_relocs
|
||
#define elf_backend_merge_symbol_attribute \
|
||
_bfd_mips_elf_merge_symbol_attribute
|
||
#define elf_backend_adjust_dynamic_symbol \
|
||
_bfd_mips_elf_adjust_dynamic_symbol
|
||
#define elf_backend_always_size_sections \
|
||
_bfd_mips_elf_always_size_sections
|
||
#define elf_backend_size_dynamic_sections \
|
||
_bfd_mips_elf_size_dynamic_sections
|
||
#define elf_backend_init_index_section _bfd_elf_init_1_index_section
|
||
#define elf_backend_relocate_section _bfd_mips_elf_relocate_section
|
||
#define elf_backend_finish_dynamic_symbol \
|
||
_bfd_mips_elf_finish_dynamic_symbol
|
||
#define elf_backend_finish_dynamic_sections \
|
||
_bfd_mips_elf_finish_dynamic_sections
|
||
#define elf_backend_final_write_processing \
|
||
_bfd_mips_elf_final_write_processing
|
||
#define elf_backend_additional_program_headers \
|
||
_bfd_mips_elf_additional_program_headers
|
||
#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
|
||
#define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
|
||
#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
|
||
#define elf_backend_copy_indirect_symbol \
|
||
_bfd_mips_elf_copy_indirect_symbol
|
||
#define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
|
||
#define elf_backend_grok_prstatus elf32_mips_grok_prstatus
|
||
#define elf_backend_grok_psinfo elf32_mips_grok_psinfo
|
||
#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
|
||
|
||
#define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
|
||
#define elf_backend_may_use_rel_p 1
|
||
#define elf_backend_may_use_rela_p 0
|
||
#define elf_backend_default_use_rela_p 0
|
||
#define elf_backend_sign_extend_vma TRUE
|
||
|
||
#define elf_backend_discard_info _bfd_mips_elf_discard_info
|
||
#define elf_backend_ignore_discarded_relocs \
|
||
_bfd_mips_elf_ignore_discarded_relocs
|
||
#define elf_backend_mips_irix_compat elf32_mips_irix_compat
|
||
#define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto
|
||
#define bfd_elf32_bfd_is_local_label_name \
|
||
mips_elf_is_local_label_name
|
||
#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
|
||
#define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info
|
||
#define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
|
||
#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
|
||
#define bfd_elf32_bfd_get_relocated_section_contents \
|
||
_bfd_elf_mips_get_relocated_section_contents
|
||
#define bfd_elf32_bfd_link_hash_table_create \
|
||
_bfd_mips_elf_link_hash_table_create
|
||
#define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
|
||
#define bfd_elf32_bfd_merge_private_bfd_data \
|
||
_bfd_mips_elf_merge_private_bfd_data
|
||
#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
|
||
#define bfd_elf32_bfd_print_private_bfd_data \
|
||
_bfd_mips_elf_print_private_bfd_data
|
||
|
||
/* Support for SGI-ish mips targets. */
|
||
#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
|
||
#define TARGET_LITTLE_NAME "elf32-littlemips"
|
||
#define TARGET_BIG_SYM bfd_elf32_bigmips_vec
|
||
#define TARGET_BIG_NAME "elf32-bigmips"
|
||
|
||
/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
|
||
a value of 0x1000, and we are compatible. */
|
||
#define ELF_MAXPAGESIZE 0x1000
|
||
#define ELF_COMMONPAGESIZE 0x1000
|
||
|
||
#include "elf32-target.h"
|
||
|
||
/* Support for traditional mips targets. */
|
||
#undef TARGET_LITTLE_SYM
|
||
#undef TARGET_LITTLE_NAME
|
||
#undef TARGET_BIG_SYM
|
||
#undef TARGET_BIG_NAME
|
||
|
||
#undef ELF_MAXPAGESIZE
|
||
#undef ELF_COMMONPAGESIZE
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
|
||
#define TARGET_LITTLE_NAME "elf32-tradlittlemips"
|
||
#define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
|
||
#define TARGET_BIG_NAME "elf32-tradbigmips"
|
||
|
||
/* The MIPS ABI says at Page 5-1:
|
||
Virtual addresses and file offsets for MIPS segments are congruent
|
||
modulo 64 KByte (0x10000) or larger powers of 2. Because 64 KBytes
|
||
is the maximum page size, the files are suitable for paging
|
||
regardless of physical page size. */
|
||
#define ELF_MAXPAGESIZE 0x10000
|
||
#define ELF_COMMONPAGESIZE 0x1000
|
||
#define elf32_bed elf32_tradbed
|
||
|
||
/* Include the target file again for this target. */
|
||
#include "elf32-target.h"
|
||
|
||
|
||
/* Specific to VxWorks. */
|
||
static reloc_howto_type mips_vxworks_copy_howto_rela =
|
||
HOWTO (R_MIPS_COPY, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_COPY", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0, /* src_mask */
|
||
0x0, /* dst_mask */
|
||
FALSE); /* pcrel_offset */
|
||
|
||
/* Specific to VxWorks. */
|
||
static reloc_howto_type mips_vxworks_jump_slot_howto_rela =
|
||
HOWTO (R_MIPS_JUMP_SLOT, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_JUMP_SLOT", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0, /* src_mask */
|
||
0x0, /* dst_mask */
|
||
FALSE); /* pcrel_offset */
|
||
|
||
/* Implement elf_backend_bfd_reloc_type_lookup for VxWorks. */
|
||
|
||
static reloc_howto_type *
|
||
mips_vxworks_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
|
||
{
|
||
switch (code)
|
||
{
|
||
case BFD_RELOC_MIPS_COPY:
|
||
return &mips_vxworks_copy_howto_rela;
|
||
case BFD_RELOC_MIPS_JUMP_SLOT:
|
||
return &mips_vxworks_jump_slot_howto_rela;
|
||
default:
|
||
return bfd_elf32_bfd_reloc_type_lookup (abfd, code);
|
||
}
|
||
}
|
||
|
||
static reloc_howto_type *
|
||
mips_vxworks_bfd_reloc_name_lookup (bfd *abfd, const char *r_name)
|
||
{
|
||
if (strcasecmp (mips_vxworks_copy_howto_rela.name, r_name) == 0)
|
||
return &mips_vxworks_copy_howto_rela;
|
||
if (strcasecmp (mips_vxworks_jump_slot_howto_rela.name, r_name) == 0)
|
||
return &mips_vxworks_jump_slot_howto_rela;
|
||
|
||
return bfd_elf32_bfd_reloc_name_lookup (abfd, r_name);
|
||
}
|
||
|
||
/* Implement elf_backend_mips_rtype_to_lookup for VxWorks. */
|
||
|
||
static reloc_howto_type *
|
||
mips_vxworks_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
|
||
{
|
||
switch (r_type)
|
||
{
|
||
case R_MIPS_COPY:
|
||
return &mips_vxworks_copy_howto_rela;
|
||
case R_MIPS_JUMP_SLOT:
|
||
return &mips_vxworks_jump_slot_howto_rela;
|
||
default:
|
||
return mips_elf32_rtype_to_howto (r_type, rela_p);
|
||
}
|
||
}
|
||
|
||
/* Implement elf_backend_final_write_processing for VxWorks. */
|
||
|
||
static void
|
||
mips_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
|
||
{
|
||
_bfd_mips_elf_final_write_processing (abfd, linker);
|
||
elf_vxworks_final_write_processing (abfd, linker);
|
||
}
|
||
|
||
#undef TARGET_LITTLE_SYM
|
||
#undef TARGET_LITTLE_NAME
|
||
#undef TARGET_BIG_SYM
|
||
#undef TARGET_BIG_NAME
|
||
|
||
#undef ELF_MAXPAGESIZE
|
||
#undef ELF_COMMONPAGESIZE
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vxworks_vec
|
||
#define TARGET_LITTLE_NAME "elf32-littlemips-vxworks"
|
||
#define TARGET_BIG_SYM bfd_elf32_bigmips_vxworks_vec
|
||
#define TARGET_BIG_NAME "elf32-bigmips-vxworks"
|
||
|
||
#undef elf32_bed
|
||
#define elf32_bed elf32_mips_vxworks_bed
|
||
|
||
#define ELF_MAXPAGESIZE 0x1000
|
||
#define ELF_COMMONPAGESIZE 0x1000
|
||
|
||
#undef elf_backend_want_got_plt
|
||
#define elf_backend_want_got_plt 1
|
||
#undef elf_backend_want_plt_sym
|
||
#define elf_backend_want_plt_sym 1
|
||
#undef elf_backend_got_symbol_offset
|
||
#define elf_backend_got_symbol_offset 0
|
||
#undef elf_backend_want_dynbss
|
||
#define elf_backend_want_dynbss 1
|
||
#undef elf_backend_may_use_rel_p
|
||
#define elf_backend_may_use_rel_p 0
|
||
#undef elf_backend_may_use_rela_p
|
||
#define elf_backend_may_use_rela_p 1
|
||
#undef elf_backend_default_use_rela_p
|
||
#define elf_backend_default_use_rela_p 1
|
||
#undef elf_backend_got_header_size
|
||
#define elf_backend_got_header_size (4 * 3)
|
||
#undef elf_backend_plt_readonly
|
||
#define elf_backend_plt_readonly 1
|
||
|
||
#undef bfd_elf32_bfd_reloc_type_lookup
|
||
#define bfd_elf32_bfd_reloc_type_lookup \
|
||
mips_vxworks_bfd_reloc_type_lookup
|
||
#undef bfd_elf32_bfd_reloc_name_lookup
|
||
#define bfd_elf32_bfd_reloc_name_lookup \
|
||
mips_vxworks_bfd_reloc_name_lookup
|
||
#undef elf_backend_mips_rtype_to_howto
|
||
#define elf_backend_mips_rtype_to_howto \
|
||
mips_vxworks_rtype_to_howto
|
||
#undef elf_backend_adjust_dynamic_symbol
|
||
#define elf_backend_adjust_dynamic_symbol \
|
||
_bfd_mips_vxworks_adjust_dynamic_symbol
|
||
#undef elf_backend_finish_dynamic_symbol
|
||
#define elf_backend_finish_dynamic_symbol \
|
||
_bfd_mips_vxworks_finish_dynamic_symbol
|
||
#undef bfd_elf32_bfd_link_hash_table_create
|
||
#define bfd_elf32_bfd_link_hash_table_create \
|
||
_bfd_mips_vxworks_link_hash_table_create
|
||
#undef elf_backend_add_symbol_hook
|
||
#define elf_backend_add_symbol_hook \
|
||
elf_vxworks_add_symbol_hook
|
||
#undef elf_backend_link_output_symbol_hook
|
||
#define elf_backend_link_output_symbol_hook \
|
||
elf_vxworks_link_output_symbol_hook
|
||
#undef elf_backend_emit_relocs
|
||
#define elf_backend_emit_relocs \
|
||
elf_vxworks_emit_relocs
|
||
#undef elf_backend_final_write_processing
|
||
#define elf_backend_final_write_processing \
|
||
mips_vxworks_final_write_processing
|
||
|
||
#undef elf_backend_additional_program_headers
|
||
#undef elf_backend_modify_segment_map
|
||
#undef elf_backend_symbol_processing
|
||
/* NOTE: elf_backend_rela_normal is not defined for MIPS. */
|
||
|
||
#include "elf32-target.h"
|