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a902ee94b7
(mips_elf64_final_gp): Don't make up gp value. * elfn32-mips.c (mips_elf_final_gp): Likewise. * elfxx-mips.c (_bfd_mips_elf_final_link): Always create .MIPS.options/.options section.
2231 lines
69 KiB
C
2231 lines
69 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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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 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 "bfd.h"
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#include "sysdep.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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/* 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 mips_elf_generic_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type mips_elf_hi16_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type mips_elf_lo16_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type mips_elf_got16_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *));
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static bfd_reloc_status_type mips_elf_final_gp
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PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *));
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static bfd_reloc_status_type mips_elf_gprel16_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type mips_elf_literal_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type mips_elf_gprel32_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type gprel32_with_gp
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PARAMS ((bfd *, asymbol *, arelent *, asection *, boolean, PTR, bfd_vma));
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static bfd_reloc_status_type mips_elf_shift6_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type mips16_jump_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type mips16_gprel_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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static reloc_howto_type *mips_elf_n32_rtype_to_howto
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PARAMS ((unsigned int, boolean));
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static void mips_info_to_howto_rel
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
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static void mips_info_to_howto_rela
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
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static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *));
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static boolean mips_elf_n32_object_p PARAMS ((bfd *));
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static boolean elf32_mips_grok_prstatus
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PARAMS ((bfd *, Elf_Internal_Note *));
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static boolean elf32_mips_grok_psinfo
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PARAMS ((bfd *, Elf_Internal_Note *));
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static irix_compat_t elf_n32_mips_irix_compat
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PARAMS ((bfd *));
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extern const bfd_target bfd_elf32_nbigmips_vec;
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extern const bfd_target bfd_elf32_nlittlemips_vec;
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static bfd_vma prev_reloc_address = -1;
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static bfd_vma prev_reloc_addend = 0;
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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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(elf_n32_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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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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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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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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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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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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/* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for NewABI REL.
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However, the native IRIX6 tools use them, so we try our best. */
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/* High 16 bits of symbol value. */
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HOWTO (R_MIPS_HI16, /* 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_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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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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mips_elf_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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mips_elf_literal_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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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. */
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HOWTO (R_MIPS_PC16, /* 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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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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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 */
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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_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 */
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/* 32 bit GP relative reference. */
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HOWTO (R_MIPS_GPREL32, /* 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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mips_elf_gprel32_reloc, /* special_function */
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"R_MIPS_GPREL32", /* 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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/* The remaining relocs are defined on Irix 5, although they are
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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. */
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HOWTO (R_MIPS_SHIFT5, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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5, /* bitsize */
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false, /* pc_relative */
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6, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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mips_elf_generic_reloc, /* special_function */
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"R_MIPS_SHIFT5", /* name */
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true, /* partial_inplace */
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0x000007c0, /* src_mask */
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0x000007c0, /* dst_mask */
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false), /* pcrel_offset */
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/* A 6 bit shift field. */
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HOWTO (R_MIPS_SHIFT6, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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6, /* bitsize */
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false, /* pc_relative */
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6, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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mips_elf_shift6_reloc, /* special_function */
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"R_MIPS_SHIFT6", /* name */
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true, /* partial_inplace */
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0x000007c4, /* src_mask */
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0x000007c4, /* dst_mask */
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false), /* pcrel_offset */
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/* A 64 bit relocation. */
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HOWTO (R_MIPS_64, /* type */
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0, /* rightshift */
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4, /* size (0 = byte, 1 = short, 2 = long) */
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64, /* bitsize */
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||
false, /* pc_relative */
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||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
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"R_MIPS_64", /* name */
|
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true, /* partial_inplace */
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MINUS_ONE, /* src_mask */
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MINUS_ONE, /* dst_mask */
|
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false), /* pcrel_offset */
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|
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/* Displacement in the global offset table. */
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HOWTO (R_MIPS_GOT_DISP, /* 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 */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
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"R_MIPS_GOT_DISP", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
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||
false), /* pcrel_offset */
|
||
|
||
/* Displacement to page pointer in the global offset table. */
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HOWTO (R_MIPS_GOT_PAGE, /* 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 */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
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||
mips_elf_generic_reloc, /* special_function */
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||
"R_MIPS_GOT_PAGE", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
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||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Offset from page pointer in the global offset table. */
|
||
HOWTO (R_MIPS_GOT_OFST, /* type */
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||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
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||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_OFST", /* 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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/* High 16 bits of displacement in global offset table. */
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HOWTO (R_MIPS_GOT_HI16, /* 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 */
|
||
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 */
|
||
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. */
|
||
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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SUB", /* name */
|
||
true, /* partial_inplace */
|
||
MINUS_ONE, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Insert the addend as an instruction. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_INSERT_A, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_INSERT_A", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Insert the addend as an instruction, and change all relocations
|
||
to refer to the old instruction at the address. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_INSERT_B, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_INSERT_B", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Delete a 32 bit instruction. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_DELETE, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_DELETE", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* The MIPS ELF64 ABI Draft wants us to support these for REL relocations.
|
||
We don't, because
|
||
a) It means building the addend from a R_MIPS_HIGHEST/R_MIPS_HIGHER/
|
||
R_MIPS_HI16/R_MIPS_LO16 sequence with varying ordering, using
|
||
fallable heuristics.
|
||
b) No other NEwABI toolchain actually emits such relocations. */
|
||
EMPTY_HOWTO (R_MIPS_HIGHER),
|
||
EMPTY_HOWTO (R_MIPS_HIGHEST),
|
||
|
||
/* 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 */
|
||
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 */
|
||
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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SCN_DISP", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
HOWTO (R_MIPS_REL16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_REL16", /* name */
|
||
true, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* These two are obsolete. */
|
||
EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
|
||
EMPTY_HOWTO (R_MIPS_PJUMP),
|
||
|
||
/* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
|
||
It must be used for multigot GOT's (and only there). */
|
||
HOWTO (R_MIPS_RELGOT, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_RELGOT", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_JALR", /* name */
|
||
false, /* partial_inplace */
|
||
0x00000000, /* src_mask */
|
||
0x00000000, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
};
|
||
|
||
/* The relocation table used for SHT_RELA sections. */
|
||
|
||
static reloc_howto_type elf_mips_howto_table_rela[] =
|
||
{
|
||
/* No relocation. */
|
||
HOWTO (R_MIPS_NONE, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_NONE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 16 bit relocation. */
|
||
HOWTO (R_MIPS_16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 32 bit relocation. */
|
||
HOWTO (R_MIPS_32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_32", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 32 bit symbol relative relocation. */
|
||
HOWTO (R_MIPS_REL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_REL32", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 26 bit jump address. */
|
||
HOWTO (R_MIPS_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 36
|
||
bits must match the PC + 4. */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_26", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x03ffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* High 16 bits of symbol value. */
|
||
HOWTO (R_MIPS_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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_HI16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Low 16 bits of symbol value. */
|
||
HOWTO (R_MIPS_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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_LO16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* GP relative reference. */
|
||
HOWTO (R_MIPS_GPREL16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf_gprel16_reloc, /* special_function */
|
||
"R_MIPS_GPREL16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Reference to literal section. */
|
||
HOWTO (R_MIPS_LITERAL, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf_literal_reloc, /* special_function */
|
||
"R_MIPS_LITERAL", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Reference to global offset table. */
|
||
HOWTO (R_MIPS_GOT16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf_got16_reloc, /* special_function */
|
||
"R_MIPS_GOT16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 16 bit PC relative reference. */
|
||
HOWTO (R_MIPS_PC16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_PC16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* 16 bit call through global offset table. */
|
||
HOWTO (R_MIPS_CALL16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_CALL16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 32 bit GP relative reference. */
|
||
HOWTO (R_MIPS_GPREL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_gprel32_reloc, /* special_function */
|
||
"R_MIPS_GPREL32", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
EMPTY_HOWTO (13),
|
||
EMPTY_HOWTO (14),
|
||
EMPTY_HOWTO (15),
|
||
|
||
/* A 5 bit shift field. */
|
||
HOWTO (R_MIPS_SHIFT5, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
5, /* bitsize */
|
||
false, /* pc_relative */
|
||
6, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SHIFT5", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x000007c0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 6 bit shift field. */
|
||
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 */
|
||
mips_elf_shift6_reloc, /* special_function */
|
||
"R_MIPS_SHIFT6", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x000007c4, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_64", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_DISP", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_PAGE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_OFST", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_HI16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_GOT_LO16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 64 bit substraction. */
|
||
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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SUB", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Insert the addend as an instruction. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_INSERT_A, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_INSERT_A", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Insert the addend as an instruction, and change all relocations
|
||
to refer to the old instruction at the address. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_INSERT_B, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_INSERT_B", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Delete a 32 bit instruction. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_DELETE, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_DELETE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_HIGHER", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_HIGHEST", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_CALL_HI16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_CALL_LO16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Section displacement, used by an associated event location section. */
|
||
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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SCN_DISP", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 16 bit relocation. */
|
||
HOWTO (R_MIPS_REL16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_REL16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* These two are obsolete. */
|
||
EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
|
||
EMPTY_HOWTO (R_MIPS_PJUMP),
|
||
|
||
/* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
|
||
It must be used for multigot GOT's (and only there). */
|
||
HOWTO (R_MIPS_RELGOT, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_RELGOT", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 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 */
|
||
mips_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_JALR", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
};
|
||
|
||
/* The reloc used for the mips16 jump instruction. */
|
||
static reloc_howto_type elf_mips16_jump_howto =
|
||
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. */
|
||
mips16_jump_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. */
|
||
static reloc_howto_type elf_mips16_gprel_howto =
|
||
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 */
|
||
0x07ff001f, /* src_mask */
|
||
0x07ff001f, /* dst_mask */
|
||
false); /* 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 */
|
||
|
||
/* This is derived from bfd_elf_generic_reloc. NewABI allows us to have
|
||
several relocations against the same address. The addend is derived
|
||
from the addends of preceding relocations. If we don't need to
|
||
do something special, we simply keep track of the addend. */
|
||
|
||
#define GET_RELOC_ADDEND(obfd, sym, entry, sec) \
|
||
{ \
|
||
/* If we're relocating, and this is an external symbol, we don't \
|
||
want to change anything. */ \
|
||
if (obfd != (bfd *) NULL \
|
||
&& (sym->flags & BSF_SECTION_SYM) == 0 \
|
||
&& (! entry->howto->partial_inplace \
|
||
|| entry->addend == 0)) \
|
||
{ \
|
||
entry->address += sec->output_offset; \
|
||
return bfd_reloc_ok; \
|
||
} \
|
||
\
|
||
/* The addend of combined relocs is remembered and left for \
|
||
subsequent relocs. */ \
|
||
if (prev_reloc_address != reloc_entry->address) \
|
||
{ \
|
||
prev_reloc_address = reloc_entry->address; \
|
||
prev_reloc_addend = reloc_entry->addend; \
|
||
} \
|
||
else \
|
||
reloc_entry->addend = prev_reloc_addend; \
|
||
}
|
||
|
||
#define SET_RELOC_ADDEND(entry) \
|
||
{ \
|
||
prev_reloc_addend = entry->addend; \
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf_generic_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
GET_RELOC_ADDEND (output_bfd, symbol, reloc_entry, input_section)
|
||
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
/* Do a R_MIPS_HI16 relocation. This has to be done in combination
|
||
with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to
|
||
the HI16. Here we just save the information we need; we do the
|
||
actual relocation when we see the LO16.
|
||
|
||
MIPS ELF requires that the LO16 immediately follow the HI16. As a
|
||
GNU extension, for non-pc-relative relocations, we permit an
|
||
arbitrary number of HI16 relocs to be associated with a single LO16
|
||
reloc. This extension permits gcc to output the HI and LO relocs
|
||
itself.
|
||
|
||
This cannot be done for PC-relative relocations because both the HI16
|
||
and LO16 parts of the relocations must be done relative to the LO16
|
||
part, and there can be carry to or borrow from the HI16 part. */
|
||
|
||
struct mips_hi16
|
||
{
|
||
struct mips_hi16 *next;
|
||
bfd_byte *addr;
|
||
bfd_vma addend;
|
||
};
|
||
|
||
/* FIXME: This should not be a static variable. */
|
||
|
||
static struct mips_hi16 *mips_hi16_list;
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_reloc_status_type ret;
|
||
bfd_vma relocation;
|
||
struct mips_hi16 *n;
|
||
|
||
GET_RELOC_ADDEND (output_bfd, symbol, reloc_entry, input_section)
|
||
|
||
ret = bfd_reloc_ok;
|
||
|
||
if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
|
||
ret = bfd_reloc_undefined;
|
||
|
||
if (bfd_is_com_section (symbol->section))
|
||
relocation = 0;
|
||
else
|
||
relocation = symbol->value;
|
||
|
||
relocation += symbol->section->output_section->vma;
|
||
relocation += symbol->section->output_offset;
|
||
relocation += reloc_entry->addend;
|
||
|
||
if (reloc_entry->address > input_section->_cooked_size)
|
||
return bfd_reloc_outofrange;
|
||
|
||
/* Save the information, and let LO16 do the actual relocation. */
|
||
n = (struct mips_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n);
|
||
if (n == NULL)
|
||
return bfd_reloc_outofrange;
|
||
n->addr = (bfd_byte *) data + reloc_entry->address;
|
||
n->addend = relocation;
|
||
n->next = mips_hi16_list;
|
||
mips_hi16_list = n;
|
||
|
||
if (output_bfd != (bfd *) NULL)
|
||
reloc_entry->address += input_section->output_offset;
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit
|
||
inplace relocation; this function exists in order to do the
|
||
R_MIPS_HI16 relocation described above. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf_lo16_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
if (mips_hi16_list != NULL)
|
||
{
|
||
struct mips_hi16 *l;
|
||
|
||
l = mips_hi16_list;
|
||
while (l != NULL)
|
||
{
|
||
unsigned long insn;
|
||
unsigned long val;
|
||
unsigned long vallo;
|
||
struct mips_hi16 *next;
|
||
|
||
/* Do the HI16 relocation. Note that we actually don't need
|
||
to know anything about the LO16 itself, except where to
|
||
find the low 16 bits of the addend needed by the LO16. */
|
||
insn = bfd_get_32 (abfd, l->addr);
|
||
vallo = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
/* The low order 16 bits are always treated as a signed
|
||
value. */
|
||
vallo = ((vallo & 0xffff) ^ 0x8000) - 0x8000;
|
||
val = ((insn & 0xffff) << 16) + vallo;
|
||
val += l->addend;
|
||
|
||
/* If PC-relative, we need to subtract out the address of the LO
|
||
half of the HI/LO. (The actual relocation is relative
|
||
to that instruction.) */
|
||
if (reloc_entry->howto->pc_relative)
|
||
val -= reloc_entry->address;
|
||
|
||
/* At this point, "val" has the value of the combined HI/LO
|
||
pair. If the low order 16 bits (which will be used for
|
||
the LO16 insn) are negative, then we will need an
|
||
adjustment for the high order 16 bits. */
|
||
val += 0x8000;
|
||
val = (val >> 16) & 0xffff;
|
||
|
||
insn &= ~ (bfd_vma) 0xffff;
|
||
insn |= val;
|
||
bfd_put_32 (abfd, (bfd_vma) insn, l->addr);
|
||
|
||
next = l->next;
|
||
free (l);
|
||
l = next;
|
||
}
|
||
|
||
mips_hi16_list = NULL;
|
||
}
|
||
|
||
/* Now do the LO16 reloc in the usual way. */
|
||
return mips_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
}
|
||
|
||
/* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset
|
||
table used for PIC code. If the symbol is an external symbol, the
|
||
instruction is modified to contain the offset of the appropriate
|
||
entry in the global offset table. If the symbol is a section
|
||
symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit
|
||
addends are combined to form the real addend against the section
|
||
symbol; the GOT16 is modified to contain the offset of an entry in
|
||
the global offset table, and the LO16 is modified to offset it
|
||
appropriately. Thus an offset larger than 16 bits requires a
|
||
modified value in the global offset table.
|
||
|
||
This implementation suffices for the assembler, but the linker does
|
||
not yet know how to create global offset tables. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf_got16_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
/* If we're relocating, and this is a local symbol, we can handle it
|
||
just like HI16. */
|
||
if (output_bfd != (bfd *) NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) != 0)
|
||
return mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
/* Otherwise we try to handle it as R_MIPS_GOT_DISP. */
|
||
return mips_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
}
|
||
|
||
/* Set the GP value for OUTPUT_BFD. Returns false if this is a
|
||
dangerous relocation. */
|
||
|
||
static boolean
|
||
mips_elf_assign_gp (output_bfd, pgp)
|
||
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 == (asymbol **) 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 relocateable output. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp)
|
||
bfd *output_bfd;
|
||
asymbol *symbol;
|
||
boolean relocateable;
|
||
char **error_message;
|
||
bfd_vma *pgp;
|
||
{
|
||
if (bfd_is_und_section (symbol->section)
|
||
&& ! relocateable)
|
||
{
|
||
*pgp = 0;
|
||
return bfd_reloc_undefined;
|
||
}
|
||
|
||
*pgp = _bfd_get_gp_value (output_bfd);
|
||
if (*pgp == 0
|
||
&& (! relocateable
|
||
|| (symbol->flags & BSF_SECTION_SYM) != 0))
|
||
{
|
||
if (relocateable)
|
||
{
|
||
/* 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. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
boolean relocateable;
|
||
bfd_reloc_status_type ret;
|
||
bfd_vma gp;
|
||
|
||
GET_RELOC_ADDEND (output_bfd, symbol, reloc_entry, input_section)
|
||
|
||
if (output_bfd != (bfd *) NULL)
|
||
relocateable = true;
|
||
else
|
||
{
|
||
relocateable = false;
|
||
output_bfd = symbol->section->output_section->owner;
|
||
}
|
||
|
||
ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
|
||
&gp);
|
||
if (ret != bfd_reloc_ok)
|
||
return ret;
|
||
|
||
return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
|
||
input_section, relocateable,
|
||
data, gp);
|
||
}
|
||
|
||
/* Do a R_MIPS_LITERAL relocation. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf_literal_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
boolean relocateable;
|
||
bfd_reloc_status_type ret;
|
||
bfd_vma gp;
|
||
|
||
GET_RELOC_ADDEND (output_bfd, symbol, reloc_entry, input_section)
|
||
|
||
/* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */
|
||
if (output_bfd != (bfd *) NULL)
|
||
relocateable = true;
|
||
else
|
||
{
|
||
relocateable = false;
|
||
output_bfd = symbol->section->output_section->owner;
|
||
}
|
||
|
||
ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
|
||
&gp);
|
||
if (ret != bfd_reloc_ok)
|
||
return ret;
|
||
|
||
return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
|
||
input_section, relocateable,
|
||
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 (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
boolean relocateable;
|
||
bfd_reloc_status_type ret;
|
||
bfd_vma gp;
|
||
|
||
GET_RELOC_ADDEND (output_bfd, symbol, reloc_entry, input_section)
|
||
|
||
/* R_MIPS_GPREL32 relocations are defined for local symbols only.
|
||
We will only have an addend if this is a newly created reloc,
|
||
not read from an ELF file. */
|
||
if (output_bfd != (bfd *) NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
||
&& reloc_entry->addend == 0)
|
||
{
|
||
*error_message = (char *)
|
||
_("32bits gp relative relocation occurs for an external symbol");
|
||
return bfd_reloc_outofrange;
|
||
}
|
||
|
||
if (output_bfd != (bfd *) NULL)
|
||
{
|
||
relocateable = true;
|
||
gp = _bfd_get_gp_value (output_bfd);
|
||
}
|
||
else
|
||
{
|
||
relocateable = false;
|
||
output_bfd = symbol->section->output_section->owner;
|
||
|
||
ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
|
||
error_message, &gp);
|
||
if (ret != bfd_reloc_ok)
|
||
return ret;
|
||
}
|
||
|
||
return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
|
||
relocateable, data, gp);
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
|
||
gp)
|
||
bfd *abfd;
|
||
asymbol *symbol;
|
||
arelent *reloc_entry;
|
||
asection *input_section;
|
||
boolean relocateable;
|
||
PTR data;
|
||
bfd_vma gp;
|
||
{
|
||
bfd_vma relocation;
|
||
unsigned long 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 > input_section->_cooked_size)
|
||
return bfd_reloc_outofrange;
|
||
|
||
if (reloc_entry->howto->src_mask == 0)
|
||
val = 0;
|
||
else
|
||
val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
/* Set val to the offset into the section or symbol. */
|
||
val += reloc_entry->addend;
|
||
|
||
/* Adjust val for the final section location and GP value. If we
|
||
are producing relocateable output, we don't want to do this for
|
||
an external symbol. */
|
||
if (! relocateable
|
||
|| (symbol->flags & BSF_SECTION_SYM) != 0)
|
||
val += relocation - gp;
|
||
|
||
bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
if (relocateable)
|
||
reloc_entry->address += input_section->output_offset;
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2,
|
||
the rest is at bits 6-10. The bitpos already got right by the howto. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf_shift6_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
GET_RELOC_ADDEND (output_bfd, symbol, reloc_entry, input_section)
|
||
|
||
reloc_entry->addend = (reloc_entry->addend & 0x00007c0)
|
||
| (reloc_entry->addend & 0x00000800) >> 9;
|
||
|
||
SET_RELOC_ADDEND (reloc_entry)
|
||
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
/* Handle a mips16 jump. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
static boolean warned = false;
|
||
|
||
GET_RELOC_ADDEND (output_bfd, symbol, reloc_entry, input_section)
|
||
|
||
/* FIXME. */
|
||
if (! warned)
|
||
(*_bfd_error_handler)
|
||
(_("Linking mips16 objects into %s format is not supported"),
|
||
bfd_get_target (input_section->output_section->owner));
|
||
warned = true;
|
||
|
||
return bfd_reloc_undefined;
|
||
}
|
||
|
||
/* Handle a mips16 GP relative reloc. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
boolean relocateable;
|
||
bfd_reloc_status_type ret;
|
||
bfd_vma gp;
|
||
unsigned short extend, insn;
|
||
unsigned long final;
|
||
|
||
GET_RELOC_ADDEND (output_bfd, symbol, reloc_entry, input_section)
|
||
|
||
if (output_bfd != NULL)
|
||
relocateable = true;
|
||
else
|
||
{
|
||
relocateable = false;
|
||
output_bfd = symbol->section->output_section->owner;
|
||
}
|
||
|
||
ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
|
||
&gp);
|
||
if (ret != bfd_reloc_ok)
|
||
return ret;
|
||
|
||
if (reloc_entry->address > input_section->_cooked_size)
|
||
return bfd_reloc_outofrange;
|
||
|
||
/* Pick up the mips16 extend instruction and the real instruction. */
|
||
extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
|
||
insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2);
|
||
|
||
/* Stuff the current addend back as a 32 bit value, do the usual
|
||
relocation, and then clean up. */
|
||
bfd_put_32 (abfd,
|
||
(bfd_vma) (((extend & 0x1f) << 11)
|
||
| (extend & 0x7e0)
|
||
| (insn & 0x1f)),
|
||
(bfd_byte *) data + reloc_entry->address);
|
||
|
||
ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
|
||
input_section, relocateable, data, gp);
|
||
|
||
final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
|
||
bfd_put_16 (abfd,
|
||
(bfd_vma) ((extend & 0xf800)
|
||
| ((final >> 11) & 0x1f)
|
||
| (final & 0x7e0)),
|
||
(bfd_byte *) data + reloc_entry->address);
|
||
bfd_put_16 (abfd,
|
||
(bfd_vma) ((insn & 0xffe0)
|
||
| (final & 0x1f)),
|
||
(bfd_byte *) data + reloc_entry->address + 2);
|
||
|
||
return ret;
|
||
}
|
||
|
||
#undef GET_RELOC_ADDEND
|
||
#undef SET_RELOC_ADDEND
|
||
|
||
/* 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_CTOR, R_MIPS_32 },
|
||
{ BFD_RELOC_64, R_MIPS_64 },
|
||
{ BFD_RELOC_16_PCREL, R_MIPS_PC16 },
|
||
{ BFD_RELOC_HI16_S, R_MIPS_HI16 },
|
||
{ BFD_RELOC_LO16, R_MIPS_LO16 },
|
||
{ BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
|
||
{ BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
|
||
{ BFD_RELOC_MIPS_JMP, R_MIPS_26 },
|
||
{ BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
|
||
{ BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
|
||
{ BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
|
||
{ BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 },
|
||
{ BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 },
|
||
{ BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
|
||
{ BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
|
||
{ BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
|
||
{ BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
|
||
{ BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
|
||
{ BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
|
||
{ BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A },
|
||
{ BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B },
|
||
{ BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE },
|
||
{ BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST },
|
||
{ BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER },
|
||
{ BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
|
||
{ BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
|
||
{ BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP },
|
||
{ BFD_RELOC_MIPS_REL16, R_MIPS_REL16 },
|
||
/* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */
|
||
{ BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT },
|
||
{ BFD_RELOC_MIPS_JALR, R_MIPS_JALR }
|
||
};
|
||
|
||
/* Given a BFD reloc type, return a howto structure. */
|
||
|
||
static reloc_howto_type *
|
||
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
bfd_reloc_code_real_type code;
|
||
{
|
||
unsigned int i;
|
||
/* FIXME: We default to RELA here instead of choosing the right
|
||
relocation variant. */
|
||
reloc_howto_type *howto_table = elf_mips_howto_table_rela;
|
||
|
||
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];
|
||
}
|
||
|
||
switch (code)
|
||
{
|
||
case BFD_RELOC_MIPS16_JMP:
|
||
return &elf_mips16_jump_howto;
|
||
case BFD_RELOC_MIPS16_GPREL:
|
||
return &elf_mips16_gprel_howto;
|
||
case BFD_RELOC_VTABLE_INHERIT:
|
||
return &elf_mips_gnu_vtinherit_howto;
|
||
case BFD_RELOC_VTABLE_ENTRY:
|
||
return &elf_mips_gnu_vtentry_howto;
|
||
default:
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
/* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
|
||
|
||
static reloc_howto_type *
|
||
mips_elf_n32_rtype_to_howto (r_type, rela_p)
|
||
unsigned int r_type;
|
||
boolean rela_p;
|
||
{
|
||
switch (r_type)
|
||
{
|
||
case R_MIPS16_26:
|
||
return &elf_mips16_jump_howto;
|
||
case R_MIPS16_GPREL:
|
||
return &elf_mips16_gprel_howto;
|
||
case R_MIPS_GNU_VTINHERIT:
|
||
return &elf_mips_gnu_vtinherit_howto;
|
||
case R_MIPS_GNU_VTENTRY:
|
||
return &elf_mips_gnu_vtentry_howto;
|
||
default:
|
||
BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
|
||
if (rela_p)
|
||
return &elf_mips_howto_table_rela[r_type];
|
||
else
|
||
return &elf_mips_howto_table_rel[r_type];
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
|
||
|
||
static void
|
||
mips_info_to_howto_rel (abfd, cache_ptr, dst)
|
||
bfd *abfd;
|
||
arelent *cache_ptr;
|
||
Elf32_Internal_Rel *dst;
|
||
{
|
||
unsigned int r_type;
|
||
|
||
r_type = ELF32_R_TYPE (dst->r_info);
|
||
cache_ptr->howto = mips_elf_n32_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 Elf32_Internal_Rela, fill in an arelent structure. */
|
||
|
||
static void
|
||
mips_info_to_howto_rela (abfd, cache_ptr, dst)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *cache_ptr;
|
||
Elf32_Internal_Rela *dst;
|
||
{
|
||
unsigned int r_type;
|
||
|
||
r_type = ELF32_R_TYPE (dst->r_info);
|
||
cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, true);
|
||
cache_ptr->addend = dst->r_addend;
|
||
}
|
||
|
||
/* 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 boolean
|
||
mips_elf_sym_is_global (abfd, sym)
|
||
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 boolean
|
||
mips_elf_n32_object_p (abfd)
|
||
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;
|
||
|
||
mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
|
||
bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
|
||
|
||
if (! ABI_N32_P(abfd))
|
||
return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Support for core dump NOTE sections. */
|
||
static boolean
|
||
elf32_mips_grok_prstatus (abfd, note)
|
||
bfd *abfd;
|
||
Elf_Internal_Note *note;
|
||
{
|
||
int offset;
|
||
unsigned int raw_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;
|
||
raw_size = 180;
|
||
|
||
break;
|
||
}
|
||
|
||
/* Make a ".reg/999" section. */
|
||
return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size,
|
||
note->descpos + offset);
|
||
}
|
||
|
||
static boolean
|
||
elf32_mips_grok_psinfo (abfd, note)
|
||
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
|
||
elf_n32_mips_irix_compat (abfd)
|
||
bfd *abfd;
|
||
{
|
||
if ((abfd->xvec == &bfd_elf32_nbigmips_vec)
|
||
|| (abfd->xvec == &bfd_elf32_nlittlemips_vec))
|
||
return ict_irix6;
|
||
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
|
||
|
||
/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
|
||
a value of 0x1000, and we are compatible.
|
||
FIXME: How does this affect NewABI? */
|
||
#define ELF_MAXPAGESIZE 0x1000
|
||
|
||
#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_elf_n32_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_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_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_plt_header_size 0
|
||
|
||
/* MIPS n32 ELF can use a mixture of REL and RELA, but some Relocations
|
||
work better/work only in RELA, so we default to this. */
|
||
#define elf_backend_may_use_rel_p 1
|
||
#define elf_backend_may_use_rela_p 1
|
||
#define elf_backend_default_use_rela_p 1
|
||
#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_write_section _bfd_mips_elf_write_section
|
||
#define elf_backend_mips_irix_compat elf_n32_mips_irix_compat
|
||
#define elf_backend_mips_rtype_to_howto mips_elf_n32_rtype_to_howto
|
||
#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
|
||
#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 using n32 ABI. */
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf32_nlittlemips_vec
|
||
#define TARGET_LITTLE_NAME "elf32-nlittlemips"
|
||
#define TARGET_BIG_SYM bfd_elf32_nbigmips_vec
|
||
#define TARGET_BIG_NAME "elf32-nbigmips"
|
||
|
||
#include "elf32-target.h"
|
||
|
||
/* Support for traditional mips targets using n32 ABI. */
|
||
#define INCLUDED_TARGET_FILE /* More a type of flag. */
|
||
|
||
#undef TARGET_LITTLE_SYM
|
||
#undef TARGET_LITTLE_NAME
|
||
#undef TARGET_BIG_SYM
|
||
#undef TARGET_BIG_NAME
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf32_ntradlittlemips_vec
|
||
#define TARGET_LITTLE_NAME "elf32-ntradlittlemips"
|
||
#define TARGET_BIG_SYM bfd_elf32_ntradbigmips_vec
|
||
#define TARGET_BIG_NAME "elf32-ntradbigmips"
|
||
|
||
/* Include the target file again for this target. */
|
||
#include "elf32-target.h"
|