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freebsd-skq/contrib/binutils/bfd/elf64-mips.c
dim 3f5c947f44 Merge ^/vendor/binutils/dist@214571 into contrib/binutils, which brings 
us up to version 2.17.50.20070703, at the last GPLv2 commit.

Amongst others, this added upstream support for some FreeBSD-specific
things that we previously had to manually hack in, such as the OSABI
label support, and so on.

There are also quite a number of new files, some for cpu's (e.g. SPU)
that we may or may not be interested in, but those can be cleaned up
later on, if needed.
2010-11-01 19:35:33 +00:00

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/* MIPS-specific support for 64-bit ELF
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2007 Free Software Foundation, Inc.
Ian Lance Taylor, Cygnus Support
Linker support added by Mark Mitchell, CodeSourcery, LLC.
<mark@codesourcery.com>
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
/* This file supports the 64-bit MIPS ELF ABI.
The MIPS 64-bit ELF ABI uses an unusual reloc format. This file
overrides the usual ELF reloc handling, and handles reading and
writing the relocations here. */
/* TODO: Many things are unsupported, even if there is some code for it
. (which was mostly stolen from elf32-mips.c and slightly adapted).
.
. - Relocation handling for REL relocs is wrong in many cases and
. generally untested.
. - Relocation handling for RELA relocs related to GOT support are
. also likely to be wrong.
. - Support for MIPS16 is untested.
. - Combined relocs with RSS_* entries are unsupported.
. - The whole GOT handling for NewABI is missing, some parts of
. the OldABI version is still lying around and should be removed.
*/
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "aout/ar.h"
#include "bfdlink.h"
#include "genlink.h"
#include "elf-bfd.h"
#include "elfxx-mips.h"
#include "elf/mips.h"
/* Get the ECOFF swapping routines. The 64-bit ABI is not supposed to
use ECOFF. However, we support it anyhow for an easier changeover. */
#include "coff/sym.h"
#include "coff/symconst.h"
#include "coff/internal.h"
#include "coff/ecoff.h"
/* The 64 bit versions of the mdebug data structures are in alpha.h. */
#include "coff/alpha.h"
#define ECOFF_SIGNED_64
#include "ecoffswap.h"
static void mips_elf64_swap_reloc_in
(bfd *, const Elf64_Mips_External_Rel *, Elf64_Mips_Internal_Rela *);
static void mips_elf64_swap_reloca_in
(bfd *, const Elf64_Mips_External_Rela *, Elf64_Mips_Internal_Rela *);
static void mips_elf64_swap_reloc_out
(bfd *, const Elf64_Mips_Internal_Rela *, Elf64_Mips_External_Rel *);
static void mips_elf64_swap_reloca_out
(bfd *, const Elf64_Mips_Internal_Rela *, Elf64_Mips_External_Rela *);
static void mips_elf64_be_swap_reloc_in
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
static void mips_elf64_be_swap_reloc_out
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
static void mips_elf64_be_swap_reloca_in
(bfd *, const bfd_byte *, Elf_Internal_Rela *);
static void mips_elf64_be_swap_reloca_out
(bfd *, const Elf_Internal_Rela *, bfd_byte *);
static reloc_howto_type *bfd_elf64_bfd_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
static reloc_howto_type *mips_elf64_rtype_to_howto
(unsigned int, bfd_boolean);
static void mips_elf64_info_to_howto_rel
(bfd *, arelent *, Elf_Internal_Rela *);
static void mips_elf64_info_to_howto_rela
(bfd *, arelent *, Elf_Internal_Rela *);
static long mips_elf64_get_reloc_upper_bound
(bfd *, asection *);
static long mips_elf64_canonicalize_reloc
(bfd *, asection *, arelent **, asymbol **);
static long mips_elf64_get_dynamic_reloc_upper_bound
(bfd *);
static long mips_elf64_canonicalize_dynamic_reloc
(bfd *, arelent **, asymbol **);
static bfd_boolean mips_elf64_slurp_one_reloc_table
(bfd *, asection *, Elf_Internal_Shdr *, bfd_size_type, arelent *,
asymbol **, bfd_boolean);
static bfd_boolean mips_elf64_slurp_reloc_table
(bfd *, asection *, asymbol **, bfd_boolean);
static void mips_elf64_write_relocs
(bfd *, asection *, void *);
static void mips_elf64_write_rel
(bfd *, asection *, Elf_Internal_Shdr *, int *, void *);
static void mips_elf64_write_rela
(bfd *, asection *, Elf_Internal_Shdr *, int *, void *);
static bfd_reloc_status_type mips_elf64_gprel16_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type mips_elf64_literal_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type mips_elf64_gprel32_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type mips_elf64_shift6_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type mips16_gprel_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_boolean mips_elf64_assign_gp
(bfd *, bfd_vma *);
static bfd_reloc_status_type mips_elf64_final_gp
(bfd *, asymbol *, bfd_boolean, char **, bfd_vma *);
static bfd_boolean mips_elf64_object_p
(bfd *);
static irix_compat_t elf64_mips_irix_compat
(bfd *);
static bfd_boolean elf64_mips_grok_prstatus
(bfd *, Elf_Internal_Note *);
static bfd_boolean elf64_mips_grok_psinfo
(bfd *, Elf_Internal_Note *);
extern const bfd_target bfd_elf64_bigmips_vec;
extern const bfd_target bfd_elf64_littlemips_vec;
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
from smaller values. Start with zero, widen, *then* decrement. */
#define MINUS_ONE (((bfd_vma)0) - 1)
/* The number of local .got entries we reserve. */
#define MIPS_RESERVED_GOTNO (2)
/* The relocation table used for SHT_REL sections. */
static reloc_howto_type mips_elf64_howto_table_rel[] =
{
/* 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 */
_bfd_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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* 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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* 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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_REL32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* 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. */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_26", /* name */
TRUE, /* partial_inplace */
0x03ffffff, /* src_mask */
0x03ffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for NewABI REL.
However, the native IRIX6 tools use them, so we try our best. */
/* High 16 bits of symbol value. */
HOWTO (R_MIPS_HI16, /* type */
16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_hi16_reloc, /* special_function */
"R_MIPS_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* 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 */
_bfd_mips_elf_lo16_reloc, /* special_function */
"R_MIPS_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* 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_elf64_gprel16_reloc, /* special_function */
"R_MIPS_GPREL16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* 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_elf64_literal_reloc, /* special_function */
"R_MIPS_LITERAL", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* 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 */
_bfd_mips_elf_got16_reloc, /* special_function */
"R_MIPS_GOT16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 16 bit PC relative reference. Note that the ABI document has a typo
and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
We do the right thing here. */
HOWTO (R_MIPS_PC16, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_PC16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* 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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_CALL16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* 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_elf64_gprel32_reloc, /* special_function */
"R_MIPS_GPREL32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* 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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_SHIFT5", /* name */
TRUE, /* partial_inplace */
0x000007c0, /* src_mask */
0x000007c0, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 6 bit shift field. */
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_elf64_shift6_reloc, /* special_function */
"R_MIPS_SHIFT6", /* name */
TRUE, /* partial_inplace */
0x000007c4, /* 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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_64", /* name */
TRUE, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
FALSE), /* pcrel_offset */
/* Displacement in the global offset table. */
HOWTO (R_MIPS_GOT_DISP, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_DISP", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Displacement to page pointer in the global offset table. */
HOWTO (R_MIPS_GOT_PAGE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_PAGE", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Offset from page pointer in the global offset table. */
HOWTO (R_MIPS_GOT_OFST, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_OFST", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* High 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_GOT_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Low 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_GOT_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 64 bit subtraction. */
HOWTO (R_MIPS_SUB, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
64, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_SUB", /* name */
TRUE, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
FALSE), /* pcrel_offset */
/* 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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_CALL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Low 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_CALL_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_CALL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Section displacement, 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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_JALR", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x00000000, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS relocations. */
EMPTY_HOWTO (R_MIPS_TLS_DTPMOD32),
EMPTY_HOWTO (R_MIPS_TLS_DTPREL32),
HOWTO (R_MIPS_TLS_DTPMOD64, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
64, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPMOD64", /* name */
TRUE, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_MIPS_TLS_DTPREL64, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
64, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPREL64", /* name */
TRUE, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS general dynamic variable reference. */
HOWTO (R_MIPS_TLS_GD, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_GD", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic variable reference. */
HOWTO (R_MIPS_TLS_LDM, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_LDM", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic offset. */
HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPREL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic offset. */
HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPREL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS thread pointer offset. */
HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_GOTTPREL", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS IE dynamic relocations. */
EMPTY_HOWTO (R_MIPS_TLS_TPREL32),
HOWTO (R_MIPS_TLS_TPREL64, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
64, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_TPREL64", /* name */
TRUE, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS thread pointer offset. */
HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_TPREL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS thread pointer offset. */
HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_TPREL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 32 bit relocation with no addend. */
HOWTO (R_MIPS_GLOB_DAT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GLOB_DAT", /* name */
FALSE, /* partial_inplace */
0x0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
};
/* The relocation table used for SHT_RELA sections. */
static reloc_howto_type mips_elf64_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 */
_bfd_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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x0000ffff, /* 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 */
_bfd_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 */
_bfd_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. */
_bfd_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 */
_bfd_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 */
_bfd_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_elf64_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_elf64_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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 16 bit PC relative reference. Note that the ABI document has a typo
and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
We do the right thing here. */
HOWTO (R_MIPS_PC16, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_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 */
_bfd_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_elf64_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 */
_bfd_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_elf64_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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_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 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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_SCN_DISP", /* name */
FALSE, /* partial_inplace */
0, /* 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 */
_bfd_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 */
_bfd_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 */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_JALR", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x00000000, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS relocations. */
EMPTY_HOWTO (R_MIPS_TLS_DTPMOD32),
EMPTY_HOWTO (R_MIPS_TLS_DTPREL32),
EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
HOWTO (R_MIPS_TLS_DTPREL64, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
64, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPREL64", /* name */
TRUE, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS general dynamic variable reference. */
HOWTO (R_MIPS_TLS_GD, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_GD", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic variable reference. */
HOWTO (R_MIPS_TLS_LDM, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_LDM", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic offset. */
HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPREL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic offset. */
HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPREL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS thread pointer offset. */
HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_GOTTPREL", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (R_MIPS_TLS_TPREL32),
EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
/* TLS thread pointer offset. */
HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_TPREL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS thread pointer offset. */
HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_TPREL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 32 bit relocation with no addend. */
HOWTO (R_MIPS_GLOB_DAT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GLOB_DAT", /* name */
FALSE, /* partial_inplace */
0x0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
};
static reloc_howto_type mips16_elf64_howto_table_rel[] =
{
/* The reloc used for the mips16 jump instruction. */
HOWTO (R_MIPS16_26, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
/* This needs complex overflow
detection, because the upper four
bits must match the PC. */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS16_26", /* name */
TRUE, /* partial_inplace */
0x3ffffff, /* src_mask */
0x3ffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The reloc used for the mips16 gprel instruction. */
HOWTO (R_MIPS16_GPREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
mips16_gprel_reloc, /* special_function */
"R_MIPS16_GPREL", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A placeholder for MIPS16 reference to global offset table. */
EMPTY_HOWTO (R_MIPS16_GOT16),
/* A placeholder for MIPS16 16 bit call through global offset table. */
EMPTY_HOWTO (R_MIPS16_CALL16),
/* MIPS16 high 16 bits of symbol value. */
HOWTO (R_MIPS16_HI16, /* type */
16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_hi16_reloc, /* special_function */
"R_MIPS16_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* MIPS16 low 16 bits of symbol value. */
HOWTO (R_MIPS16_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_lo16_reloc, /* special_function */
"R_MIPS16_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
};
static reloc_howto_type mips16_elf64_howto_table_rela[] =
{
/* The reloc used for the mips16 jump instruction. */
HOWTO (R_MIPS16_26, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
/* This needs complex overflow
detection, because the upper four
bits must match the PC. */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS16_26", /* name */
FALSE, /* partial_inplace */
0x3ffffff, /* src_mask */
0x3ffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The reloc used for the mips16 gprel instruction. */
HOWTO (R_MIPS16_GPREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
mips16_gprel_reloc, /* special_function */
"R_MIPS16_GPREL", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A placeholder for MIPS16 reference to global offset table. */
EMPTY_HOWTO (R_MIPS16_GOT16),
/* A placeholder for MIPS16 16 bit call through global offset table. */
EMPTY_HOWTO (R_MIPS16_CALL16),
/* MIPS16 high 16 bits of symbol value. */
HOWTO (R_MIPS16_HI16, /* type */
16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_hi16_reloc, /* special_function */
"R_MIPS16_HI16", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* MIPS16 low 16 bits of symbol value. */
HOWTO (R_MIPS16_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_lo16_reloc, /* special_function */
"R_MIPS16_LO16", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* 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 */
/* 16 bit offset for pc-relative branches. */
static reloc_howto_type elf_mips_gnu_rel16_s2 =
HOWTO (R_MIPS_GNU_REL16_S2, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GNU_REL16_S2", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE); /* pcrel_offset */
/* 16 bit offset for pc-relative branches. */
static reloc_howto_type elf_mips_gnu_rela16_s2 =
HOWTO (R_MIPS_GNU_REL16_S2, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GNU_REL16_S2", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE); /* pcrel_offset */
/* Swap in a MIPS 64-bit Rel reloc. */
static void
mips_elf64_swap_reloc_in (bfd *abfd, const Elf64_Mips_External_Rel *src,
Elf64_Mips_Internal_Rela *dst)
{
dst->r_offset = H_GET_64 (abfd, src->r_offset);
dst->r_sym = H_GET_32 (abfd, src->r_sym);
dst->r_ssym = H_GET_8 (abfd, src->r_ssym);
dst->r_type3 = H_GET_8 (abfd, src->r_type3);
dst->r_type2 = H_GET_8 (abfd, src->r_type2);
dst->r_type = H_GET_8 (abfd, src->r_type);
dst->r_addend = 0;
}
/* Swap in a MIPS 64-bit Rela reloc. */
static void
mips_elf64_swap_reloca_in (bfd *abfd, const Elf64_Mips_External_Rela *src,
Elf64_Mips_Internal_Rela *dst)
{
dst->r_offset = H_GET_64 (abfd, src->r_offset);
dst->r_sym = H_GET_32 (abfd, src->r_sym);
dst->r_ssym = H_GET_8 (abfd, src->r_ssym);
dst->r_type3 = H_GET_8 (abfd, src->r_type3);
dst->r_type2 = H_GET_8 (abfd, src->r_type2);
dst->r_type = H_GET_8 (abfd, src->r_type);
dst->r_addend = H_GET_S64 (abfd, src->r_addend);
}
/* Swap out a MIPS 64-bit Rel reloc. */
static void
mips_elf64_swap_reloc_out (bfd *abfd, const Elf64_Mips_Internal_Rela *src,
Elf64_Mips_External_Rel *dst)
{
H_PUT_64 (abfd, src->r_offset, dst->r_offset);
H_PUT_32 (abfd, src->r_sym, dst->r_sym);
H_PUT_8 (abfd, src->r_ssym, dst->r_ssym);
H_PUT_8 (abfd, src->r_type3, dst->r_type3);
H_PUT_8 (abfd, src->r_type2, dst->r_type2);
H_PUT_8 (abfd, src->r_type, dst->r_type);
}
/* Swap out a MIPS 64-bit Rela reloc. */
static void
mips_elf64_swap_reloca_out (bfd *abfd, const Elf64_Mips_Internal_Rela *src,
Elf64_Mips_External_Rela *dst)
{
H_PUT_64 (abfd, src->r_offset, dst->r_offset);
H_PUT_32 (abfd, src->r_sym, dst->r_sym);
H_PUT_8 (abfd, src->r_ssym, dst->r_ssym);
H_PUT_8 (abfd, src->r_type3, dst->r_type3);
H_PUT_8 (abfd, src->r_type2, dst->r_type2);
H_PUT_8 (abfd, src->r_type, dst->r_type);
H_PUT_S64 (abfd, src->r_addend, dst->r_addend);
}
/* Swap in a MIPS 64-bit Rel reloc. */
static void
mips_elf64_be_swap_reloc_in (bfd *abfd, const bfd_byte *src,
Elf_Internal_Rela *dst)
{
Elf64_Mips_Internal_Rela mirel;
mips_elf64_swap_reloc_in (abfd,
(const Elf64_Mips_External_Rel *) src,
&mirel);
dst[0].r_offset = mirel.r_offset;
dst[0].r_info = ELF64_R_INFO (mirel.r_sym, mirel.r_type);
dst[0].r_addend = 0;
dst[1].r_offset = mirel.r_offset;
dst[1].r_info = ELF64_R_INFO (mirel.r_ssym, mirel.r_type2);
dst[1].r_addend = 0;
dst[2].r_offset = mirel.r_offset;
dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirel.r_type3);
dst[2].r_addend = 0;
}
/* Swap in a MIPS 64-bit Rela reloc. */
static void
mips_elf64_be_swap_reloca_in (bfd *abfd, const bfd_byte *src,
Elf_Internal_Rela *dst)
{
Elf64_Mips_Internal_Rela mirela;
mips_elf64_swap_reloca_in (abfd,
(const Elf64_Mips_External_Rela *) src,
&mirela);
dst[0].r_offset = mirela.r_offset;
dst[0].r_info = ELF64_R_INFO (mirela.r_sym, mirela.r_type);
dst[0].r_addend = mirela.r_addend;
dst[1].r_offset = mirela.r_offset;
dst[1].r_info = ELF64_R_INFO (mirela.r_ssym, mirela.r_type2);
dst[1].r_addend = 0;
dst[2].r_offset = mirela.r_offset;
dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirela.r_type3);
dst[2].r_addend = 0;
}
/* Swap out a MIPS 64-bit Rel reloc. */
static void
mips_elf64_be_swap_reloc_out (bfd *abfd, const Elf_Internal_Rela *src,
bfd_byte *dst)
{
Elf64_Mips_Internal_Rela mirel;
mirel.r_offset = src[0].r_offset;
BFD_ASSERT(src[0].r_offset == src[1].r_offset);
mirel.r_type = ELF64_MIPS_R_TYPE (src[0].r_info);
mirel.r_sym = ELF64_R_SYM (src[0].r_info);
mirel.r_type2 = ELF64_MIPS_R_TYPE (src[1].r_info);
mirel.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info);
mirel.r_type3 = ELF64_MIPS_R_TYPE (src[2].r_info);
mips_elf64_swap_reloc_out (abfd, &mirel,
(Elf64_Mips_External_Rel *) dst);
}
/* Swap out a MIPS 64-bit Rela reloc. */
static void
mips_elf64_be_swap_reloca_out (bfd *abfd, const Elf_Internal_Rela *src,
bfd_byte *dst)
{
Elf64_Mips_Internal_Rela mirela;
mirela.r_offset = src[0].r_offset;
BFD_ASSERT(src[0].r_offset == src[1].r_offset);
BFD_ASSERT(src[0].r_offset == src[2].r_offset);
mirela.r_type = ELF64_MIPS_R_TYPE (src[0].r_info);
mirela.r_sym = ELF64_R_SYM (src[0].r_info);
mirela.r_addend = src[0].r_addend;
BFD_ASSERT(src[1].r_addend == 0);
BFD_ASSERT(src[2].r_addend == 0);
mirela.r_type2 = ELF64_MIPS_R_TYPE (src[1].r_info);
mirela.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info);
mirela.r_type3 = ELF64_MIPS_R_TYPE (src[2].r_info);
mips_elf64_swap_reloca_out (abfd, &mirela,
(Elf64_Mips_External_Rela *) dst);
}
/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
dangerous relocation. */
static bfd_boolean
mips_elf64_assign_gp (bfd *output_bfd, bfd_vma *pgp)
{
unsigned int count;
asymbol **sym;
unsigned int i;
/* If we've already figured out what GP will be, just return it. */
*pgp = _bfd_get_gp_value (output_bfd);
if (*pgp)
return TRUE;
count = bfd_get_symcount (output_bfd);
sym = bfd_get_outsymbols (output_bfd);
/* The linker script will have created a symbol named `_gp' with the
appropriate value. */
if (sym == NULL)
i = count;
else
{
for (i = 0; i < count; i++, sym++)
{
register const char *name;
name = bfd_asymbol_name (*sym);
if (*name == '_' && strcmp (name, "_gp") == 0)
{
*pgp = bfd_asymbol_value (*sym);
_bfd_set_gp_value (output_bfd, *pgp);
break;
}
}
}
if (i >= count)
{
/* Only get the error once. */
*pgp = 4;
_bfd_set_gp_value (output_bfd, *pgp);
return FALSE;
}
return TRUE;
}
/* We have to figure out the gp value, so that we can adjust the
symbol value correctly. We look up the symbol _gp in the output
BFD. If we can't find it, we're stuck. We cache it in the ELF
target data. We don't need to adjust the symbol value for an
external symbol if we are producing relocatable output. */
static bfd_reloc_status_type
mips_elf64_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
char **error_message, bfd_vma *pgp)
{
if (bfd_is_und_section (symbol->section)
&& ! relocatable)
{
*pgp = 0;
return bfd_reloc_undefined;
}
*pgp = _bfd_get_gp_value (output_bfd);
if (*pgp == 0
&& (! relocatable
|| (symbol->flags & BSF_SECTION_SYM) != 0))
{
if (relocatable)
{
/* Make up a value. */
*pgp = symbol->section->output_section->vma /*+ 0x4000*/;
_bfd_set_gp_value (output_bfd, *pgp);
}
else if (!mips_elf64_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_elf64_gprel16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
void *data, asection *input_section, bfd *output_bfd,
char **error_message)
{
bfd_boolean relocatable;
bfd_reloc_status_type ret;
bfd_vma gp;
/* If we're relocating, and this is an external symbol, we don't want
to change anything. */
if (output_bfd != NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (symbol->flags & BSF_LOCAL) != 0)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
if (output_bfd != NULL)
relocatable = TRUE;
else
{
relocatable = FALSE;
output_bfd = symbol->section->output_section->owner;
}
ret = mips_elf64_final_gp (output_bfd, symbol, relocatable, error_message,
&gp);
if (ret != bfd_reloc_ok)
return ret;
return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
input_section, relocatable,
data, gp);
}
/* Do a R_MIPS_LITERAL relocation. */
static bfd_reloc_status_type
mips_elf64_literal_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
void *data, asection *input_section, bfd *output_bfd,
char **error_message)
{
bfd_boolean relocatable;
bfd_reloc_status_type ret;
bfd_vma gp;
/* R_MIPS_LITERAL relocations are defined for local symbols only. */
if (output_bfd != NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (symbol->flags & BSF_LOCAL) != 0)
{
*error_message = (char *)
_("literal relocation occurs for an external symbol");
return bfd_reloc_outofrange;
}
/* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */
if (output_bfd != NULL)
relocatable = TRUE;
else
{
relocatable = FALSE;
output_bfd = symbol->section->output_section->owner;
}
ret = mips_elf64_final_gp (output_bfd, symbol, relocatable, error_message,
&gp);
if (ret != bfd_reloc_ok)
return ret;
return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
input_section, relocatable,
data, gp);
}
/* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
become the offset from the gp register. */
static bfd_reloc_status_type
mips_elf64_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
void *data, asection *input_section, bfd *output_bfd,
char **error_message)
{
bfd_boolean relocatable;
bfd_reloc_status_type ret;
bfd_vma gp;
bfd_vma relocation;
bfd_vma val;
/* R_MIPS_GPREL32 relocations are defined for local symbols only. */
if (output_bfd != NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (symbol->flags & BSF_LOCAL) != 0)
{
*error_message = (char *)
_("32bits gp relative relocation occurs for an external symbol");
return bfd_reloc_outofrange;
}
if (output_bfd != NULL)
relocatable = TRUE;
else
{
relocatable = FALSE;
output_bfd = symbol->section->output_section->owner;
}
ret = mips_elf64_final_gp (output_bfd, symbol, relocatable,
error_message, &gp);
if (ret != bfd_reloc_ok)
return ret;
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
return bfd_reloc_outofrange;
/* Set val to the offset into the section or symbol. */
val = reloc_entry->addend;
if (reloc_entry->howto->partial_inplace)
val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
/* Adjust val for the final section location and GP value. If we
are producing relocatable output, we don't want to do this for
an external symbol. */
if (! relocatable
|| (symbol->flags & BSF_SECTION_SYM) != 0)
val += relocation - gp;
if (reloc_entry->howto->partial_inplace)
bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
else
reloc_entry->addend = val;
if (relocatable)
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
/* 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_elf64_shift6_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
void *data, asection *input_section, bfd *output_bfd,
char **error_message)
{
if (reloc_entry->howto->partial_inplace)
{
reloc_entry->addend = ((reloc_entry->addend & 0x00007c0)
| (reloc_entry->addend & 0x00000800) >> 9);
}
return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd,
error_message);
}
/* Handle a mips16 GP relative reloc. */
static bfd_reloc_status_type
mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
void *data, asection *input_section, bfd *output_bfd,
char **error_message)
{
bfd_boolean relocatable;
bfd_reloc_status_type ret;
bfd_byte *location;
bfd_vma gp;
/* If we're relocating, and this is an external symbol, we don't want
to change anything. */
if (output_bfd != NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (symbol->flags & BSF_LOCAL) != 0)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
if (output_bfd != NULL)
relocatable = TRUE;
else
{
relocatable = FALSE;
output_bfd = symbol->section->output_section->owner;
}
ret = mips_elf64_final_gp (output_bfd, symbol, relocatable, error_message,
&gp);
if (ret != bfd_reloc_ok)
return ret;
location = (bfd_byte *) data + reloc_entry->address;
_bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
location);
ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
input_section, relocatable,
data, gp);
_bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
location);
return ret;
}
/* A mapping from BFD reloc types to MIPS ELF reloc types. */
struct elf_reloc_map {
bfd_reloc_code_real_type bfd_val;
enum elf_mips_reloc_type elf_val;
};
static const struct elf_reloc_map mips_reloc_map[] =
{
{ BFD_RELOC_NONE, R_MIPS_NONE },
{ BFD_RELOC_16, R_MIPS_16 },
{ BFD_RELOC_32, R_MIPS_32 },
/* There is no BFD reloc for R_MIPS_REL32. */
{ BFD_RELOC_64, R_MIPS_64 },
{ BFD_RELOC_CTOR, R_MIPS_64 },
{ BFD_RELOC_16_PCREL_S2, 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 },
{ BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
{ BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
{ BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
{ BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
{ BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
{ BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
{ BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
{ BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
{ BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
{ BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
{ BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
{ BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
{ BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
};
static const struct elf_reloc_map mips16_reloc_map[] =
{
{ BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
{ BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
{ BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
{ BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
};
/* Given a BFD reloc type, return a howto structure. */
static reloc_howto_type *
bfd_elf64_bfd_reloc_type_lookup (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 = mips_elf64_howto_table_rela;
reloc_howto_type *howto16_table = mips16_elf64_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];
}
for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
i++)
{
if (mips16_reloc_map[i].bfd_val == code)
return &howto16_table[(int) mips16_reloc_map[i].elf_val];
}
switch (code)
{
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;
}
}
static reloc_howto_type *
bfd_elf64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
const char *r_name)
{
unsigned int i;
for (i = 0;
i < (sizeof (mips_elf64_howto_table_rela)
/ sizeof (mips_elf64_howto_table_rela[0])); i++)
if (mips_elf64_howto_table_rela[i].name != NULL
&& strcasecmp (mips_elf64_howto_table_rela[i].name, r_name) == 0)
return &mips_elf64_howto_table_rela[i];
for (i = 0;
i < (sizeof (mips16_elf64_howto_table_rela)
/ sizeof (mips16_elf64_howto_table_rela[0]));
i++)
if (mips16_elf64_howto_table_rela[i].name != NULL
&& strcasecmp (mips16_elf64_howto_table_rela[i].name, r_name) == 0)
return &mips16_elf64_howto_table_rela[i];
if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0)
return &elf_mips_gnu_vtinherit_howto;
if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0)
return &elf_mips_gnu_vtentry_howto;
if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0)
return &elf_mips_gnu_rel16_s2;
if (strcasecmp (elf_mips_gnu_rela16_s2.name, r_name) == 0)
return &elf_mips_gnu_rela16_s2;
return NULL;
}
/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
static reloc_howto_type *
mips_elf64_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
{
switch (r_type)
{
case R_MIPS_GNU_VTINHERIT:
return &elf_mips_gnu_vtinherit_howto;
case R_MIPS_GNU_VTENTRY:
return &elf_mips_gnu_vtentry_howto;
case R_MIPS_GNU_REL16_S2:
if (rela_p)
return &elf_mips_gnu_rela16_s2;
else
return &elf_mips_gnu_rel16_s2;
default:
if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
{
if (rela_p)
return &mips16_elf64_howto_table_rela[r_type - R_MIPS16_min];
else
return &mips16_elf64_howto_table_rel[r_type - R_MIPS16_min];
}
BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
if (rela_p)
return &mips_elf64_howto_table_rela[r_type];
else
return &mips_elf64_howto_table_rel[r_type];
break;
}
}
/* Prevent relocation handling by bfd for MIPS ELF64. */
static void
mips_elf64_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
arelent *cache_ptr ATTRIBUTE_UNUSED,
Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
{
BFD_ASSERT (0);
}
static void
mips_elf64_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
arelent *cache_ptr ATTRIBUTE_UNUSED,
Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
{
BFD_ASSERT (0);
}
/* Since each entry in an SHT_REL or SHT_RELA section can represent up
to three relocs, we must tell the user to allocate more space. */
static long
mips_elf64_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
{
return (sec->reloc_count * 3 + 1) * sizeof (arelent *);
}
static long
mips_elf64_get_dynamic_reloc_upper_bound (bfd *abfd)
{
return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 3;
}
/* We must also copy more relocations than the corresponding functions
in elf.c would, so the two following functions are slightly
modified from elf.c, that multiply the external relocation count by
3 to obtain the internal relocation count. */
static long
mips_elf64_canonicalize_reloc (bfd *abfd, sec_ptr section,
arelent **relptr, asymbol **symbols)
{
arelent *tblptr;
unsigned int i;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
return -1;
tblptr = section->relocation;
for (i = 0; i < section->reloc_count * 3; i++)
*relptr++ = tblptr++;
*relptr = NULL;
return section->reloc_count * 3;
}
static long
mips_elf64_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage,
asymbol **syms)
{
bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
asection *s;
long ret;
if (elf_dynsymtab (abfd) == 0)
{
bfd_set_error (bfd_error_invalid_operation);
return -1;
}
slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
ret = 0;
for (s = abfd->sections; s != NULL; s = s->next)
{
if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
&& (elf_section_data (s)->this_hdr.sh_type == SHT_REL
|| elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
{
arelent *p;
long count, i;
if (! (*slurp_relocs) (abfd, s, syms, TRUE))
return -1;
count = s->size / elf_section_data (s)->this_hdr.sh_entsize * 3;
p = s->relocation;
for (i = 0; i < count; i++)
*storage++ = p++;
ret += count;
}
}
*storage = NULL;
return ret;
}
/* Read the relocations from one reloc section. This is mostly copied
from elfcode.h, except for the changes to expand one external
relocation to 3 internal ones. We must unfortunately set
reloc_count to the number of external relocations, because a lot of
generic code seems to depend on this. */
static bfd_boolean
mips_elf64_slurp_one_reloc_table (bfd *abfd, asection *asect,
Elf_Internal_Shdr *rel_hdr,
bfd_size_type reloc_count,
arelent *relents, asymbol **symbols,
bfd_boolean dynamic)
{
void *allocated;
bfd_byte *native_relocs;
arelent *relent;
bfd_vma i;
int entsize;
bfd_boolean rela_p;
allocated = bfd_malloc (rel_hdr->sh_size);
if (allocated == NULL)
return FALSE;
if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
|| (bfd_bread (allocated, rel_hdr->sh_size, abfd)
!= rel_hdr->sh_size))
goto error_return;
native_relocs = allocated;
entsize = rel_hdr->sh_entsize;
BFD_ASSERT (entsize == sizeof (Elf64_Mips_External_Rel)
|| entsize == sizeof (Elf64_Mips_External_Rela));
if (entsize == sizeof (Elf64_Mips_External_Rel))
rela_p = FALSE;
else
rela_p = TRUE;
for (i = 0, relent = relents;
i < reloc_count;
i++, native_relocs += entsize)
{
Elf64_Mips_Internal_Rela rela;
bfd_boolean used_sym, used_ssym;
int ir;
if (entsize == sizeof (Elf64_Mips_External_Rela))
mips_elf64_swap_reloca_in (abfd,
(Elf64_Mips_External_Rela *) native_relocs,
&rela);
else
mips_elf64_swap_reloc_in (abfd,
(Elf64_Mips_External_Rel *) native_relocs,
&rela);
/* Each entry represents exactly three actual relocations. */
used_sym = FALSE;
used_ssym = FALSE;
for (ir = 0; ir < 3; ir++)
{
enum elf_mips_reloc_type type;
switch (ir)
{
default:
abort ();
case 0:
type = (enum elf_mips_reloc_type) rela.r_type;
break;
case 1:
type = (enum elf_mips_reloc_type) rela.r_type2;
break;
case 2:
type = (enum elf_mips_reloc_type) rela.r_type3;
break;
}
/* Some types require symbols, whereas some do not. */
switch (type)
{
case R_MIPS_NONE:
case R_MIPS_LITERAL:
case R_MIPS_INSERT_A:
case R_MIPS_INSERT_B:
case R_MIPS_DELETE:
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
break;
default:
if (! used_sym)
{
if (rela.r_sym == 0)
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
else
{
asymbol **ps, *s;
ps = symbols + rela.r_sym - 1;
s = *ps;
if ((s->flags & BSF_SECTION_SYM) == 0)
relent->sym_ptr_ptr = ps;
else
relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
}
used_sym = TRUE;
}
else if (! used_ssym)
{
switch (rela.r_ssym)
{
case RSS_UNDEF:
relent->sym_ptr_ptr =
bfd_abs_section_ptr->symbol_ptr_ptr;
break;
case RSS_GP:
case RSS_GP0:
case RSS_LOC:
/* FIXME: I think these need to be handled using
special howto structures. */
BFD_ASSERT (0);
break;
default:
BFD_ASSERT (0);
break;
}
used_ssym = TRUE;
}
else
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
break;
}
/* The address of an ELF reloc is section relative for an
object file, and absolute for an executable file or
shared library. The address of a BFD reloc is always
section relative. */
if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic)
relent->address = rela.r_offset;
else
relent->address = rela.r_offset - asect->vma;
relent->addend = rela.r_addend;
relent->howto = mips_elf64_rtype_to_howto (type, rela_p);
++relent;
}
}
asect->reloc_count += (relent - relents) / 3;
if (allocated != NULL)
free (allocated);
return TRUE;
error_return:
if (allocated != NULL)
free (allocated);
return FALSE;
}
/* Read the relocations. On Irix 6, there can be two reloc sections
associated with a single data section. This is copied from
elfcode.h as well, with changes as small as accounting for 3
internal relocs per external reloc and resetting reloc_count to
zero before processing the relocs of a section. */
static bfd_boolean
mips_elf64_slurp_reloc_table (bfd *abfd, asection *asect,
asymbol **symbols, bfd_boolean dynamic)
{
struct bfd_elf_section_data * const d = elf_section_data (asect);
Elf_Internal_Shdr *rel_hdr;
Elf_Internal_Shdr *rel_hdr2;
bfd_size_type reloc_count;
bfd_size_type reloc_count2;
arelent *relents;
bfd_size_type amt;
if (asect->relocation != NULL)
return TRUE;
if (! dynamic)
{
if ((asect->flags & SEC_RELOC) == 0
|| asect->reloc_count == 0)
return TRUE;
rel_hdr = &d->rel_hdr;
reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
rel_hdr2 = d->rel_hdr2;
reloc_count2 = (rel_hdr2 ? NUM_SHDR_ENTRIES (rel_hdr2) : 0);
BFD_ASSERT (asect->reloc_count == reloc_count + reloc_count2);
BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
|| (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset));
}
else
{
/* Note that ASECT->RELOC_COUNT tends not to be accurate in this
case because relocations against this section may use the
dynamic symbol table, and in that case bfd_section_from_shdr
in elf.c does not update the RELOC_COUNT. */
if (asect->size == 0)
return TRUE;
rel_hdr = &d->this_hdr;
reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
rel_hdr2 = NULL;
reloc_count2 = 0;
}
/* Allocate space for 3 arelent structures for each Rel structure. */
amt = (reloc_count + reloc_count2) * 3 * sizeof (arelent);
relents = bfd_alloc (abfd, amt);
if (relents == NULL)
return FALSE;
/* The slurp_one_reloc_table routine increments reloc_count. */
asect->reloc_count = 0;
if (! mips_elf64_slurp_one_reloc_table (abfd, asect,
rel_hdr, reloc_count,
relents,
symbols, dynamic))
return FALSE;
if (d->rel_hdr2 != NULL)
{
if (! mips_elf64_slurp_one_reloc_table (abfd, asect,
rel_hdr2, reloc_count2,
relents + reloc_count * 3,
symbols, dynamic))
return FALSE;
}
asect->relocation = relents;
return TRUE;
}
/* Write out the relocations. */
static void
mips_elf64_write_relocs (bfd *abfd, asection *sec, void *data)
{
bfd_boolean *failedp = data;
int count;
Elf_Internal_Shdr *rel_hdr;
unsigned int idx;
/* If we have already failed, don't do anything. */
if (*failedp)
return;
if ((sec->flags & SEC_RELOC) == 0)
return;
/* The linker backend writes the relocs out itself, and sets the
reloc_count field to zero to inhibit writing them here. Also,
sometimes the SEC_RELOC flag gets set even when there aren't any
relocs. */
if (sec->reloc_count == 0)
return;
/* We can combine up to three relocs that refer to the same address
if the latter relocs have no associated symbol. */
count = 0;
for (idx = 0; idx < sec->reloc_count; idx++)
{
bfd_vma addr;
unsigned int i;
++count;
addr = sec->orelocation[idx]->address;
for (i = 0; i < 2; i++)
{
arelent *r;
if (idx + 1 >= sec->reloc_count)
break;
r = sec->orelocation[idx + 1];
if (r->address != addr
|| ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
|| (*r->sym_ptr_ptr)->value != 0)
break;
/* We can merge the reloc at IDX + 1 with the reloc at IDX. */
++idx;
}
}
rel_hdr = &elf_section_data (sec)->rel_hdr;
/* Do the actual relocation. */
if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rel))
mips_elf64_write_rel (abfd, sec, rel_hdr, &count, data);
else if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rela))
mips_elf64_write_rela (abfd, sec, rel_hdr, &count, data);
else
BFD_ASSERT (0);
}
static void
mips_elf64_write_rel (bfd *abfd, asection *sec,
Elf_Internal_Shdr *rel_hdr,
int *count, void *data)
{
bfd_boolean *failedp = data;
Elf64_Mips_External_Rel *ext_rel;
unsigned int idx;
asymbol *last_sym = 0;
int last_sym_idx = 0;
rel_hdr->sh_size = rel_hdr->sh_entsize * *count;
rel_hdr->contents = bfd_alloc (abfd, rel_hdr->sh_size);
if (rel_hdr->contents == NULL)
{
*failedp = TRUE;
return;
}
ext_rel = (Elf64_Mips_External_Rel *) rel_hdr->contents;
for (idx = 0; idx < sec->reloc_count; idx++, ext_rel++)
{
arelent *ptr;
Elf64_Mips_Internal_Rela int_rel;
asymbol *sym;
int n;
unsigned int i;
ptr = sec->orelocation[idx];
/* The address of an ELF reloc is section relative for an object
file, and absolute for an executable file or shared library.
The address of a BFD reloc is always section relative. */
if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
int_rel.r_offset = ptr->address;
else
int_rel.r_offset = ptr->address + sec->vma;
sym = *ptr->sym_ptr_ptr;
if (sym == last_sym)
n = last_sym_idx;
else if (bfd_is_abs_section (sym->section) && sym->value == 0)
n = STN_UNDEF;
else
{
last_sym = sym;
n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
if (n < 0)
{
*failedp = TRUE;
return;
}
last_sym_idx = n;
}
int_rel.r_sym = n;
int_rel.r_ssym = RSS_UNDEF;
if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
&& ! _bfd_elf_validate_reloc (abfd, ptr))
{
*failedp = TRUE;
return;
}
int_rel.r_type = ptr->howto->type;
int_rel.r_type2 = (int) R_MIPS_NONE;
int_rel.r_type3 = (int) R_MIPS_NONE;
for (i = 0; i < 2; i++)
{
arelent *r;
if (idx + 1 >= sec->reloc_count)
break;
r = sec->orelocation[idx + 1];
if (r->address != ptr->address
|| ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
|| (*r->sym_ptr_ptr)->value != 0)
break;
/* We can merge the reloc at IDX + 1 with the reloc at IDX. */
if (i == 0)
int_rel.r_type2 = r->howto->type;
else
int_rel.r_type3 = r->howto->type;
++idx;
}
mips_elf64_swap_reloc_out (abfd, &int_rel, ext_rel);
}
BFD_ASSERT (ext_rel - (Elf64_Mips_External_Rel *) rel_hdr->contents
== *count);
}
static void
mips_elf64_write_rela (bfd *abfd, asection *sec,
Elf_Internal_Shdr *rela_hdr,
int *count, void *data)
{
bfd_boolean *failedp = data;
Elf64_Mips_External_Rela *ext_rela;
unsigned int idx;
asymbol *last_sym = 0;
int last_sym_idx = 0;
rela_hdr->sh_size = rela_hdr->sh_entsize * *count;
rela_hdr->contents = bfd_alloc (abfd, rela_hdr->sh_size);
if (rela_hdr->contents == NULL)
{
*failedp = TRUE;
return;
}
ext_rela = (Elf64_Mips_External_Rela *) rela_hdr->contents;
for (idx = 0; idx < sec->reloc_count; idx++, ext_rela++)
{
arelent *ptr;
Elf64_Mips_Internal_Rela int_rela;
asymbol *sym;
int n;
unsigned int i;
ptr = sec->orelocation[idx];
/* The address of an ELF reloc is section relative for an object
file, and absolute for an executable file or shared library.
The address of a BFD reloc is always section relative. */
if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
int_rela.r_offset = ptr->address;
else
int_rela.r_offset = ptr->address + sec->vma;
sym = *ptr->sym_ptr_ptr;
if (sym == last_sym)
n = last_sym_idx;
else if (bfd_is_abs_section (sym->section) && sym->value == 0)
n = STN_UNDEF;
else
{
last_sym = sym;
n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
if (n < 0)
{
*failedp = TRUE;
return;
}
last_sym_idx = n;
}
int_rela.r_sym = n;
int_rela.r_addend = ptr->addend;
int_rela.r_ssym = RSS_UNDEF;
if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
&& ! _bfd_elf_validate_reloc (abfd, ptr))
{
*failedp = TRUE;
return;
}
int_rela.r_type = ptr->howto->type;
int_rela.r_type2 = (int) R_MIPS_NONE;
int_rela.r_type3 = (int) R_MIPS_NONE;
for (i = 0; i < 2; i++)
{
arelent *r;
if (idx + 1 >= sec->reloc_count)
break;
r = sec->orelocation[idx + 1];
if (r->address != ptr->address
|| ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
|| (*r->sym_ptr_ptr)->value != 0)
break;
/* We can merge the reloc at IDX + 1 with the reloc at IDX. */
if (i == 0)
int_rela.r_type2 = r->howto->type;
else
int_rela.r_type3 = r->howto->type;
++idx;
}
mips_elf64_swap_reloca_out (abfd, &int_rela, ext_rela);
}
BFD_ASSERT (ext_rela - (Elf64_Mips_External_Rela *) rela_hdr->contents
== *count);
}
/* Set the right machine number for a MIPS ELF file. */
static bfd_boolean
mips_elf64_object_p (bfd *abfd)
{
unsigned long mach;
/* Irix 6 is 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 (elf64_mips_irix_compat (abfd) != ict_none)
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);
return TRUE;
}
/* Depending on the target vector we generate some version of Irix
executables or "normal" MIPS ELF ABI executables. */
static irix_compat_t
elf64_mips_irix_compat (bfd *abfd)
{
if ((abfd->xvec == &bfd_elf64_bigmips_vec)
|| (abfd->xvec == &bfd_elf64_littlemips_vec))
return ict_irix6;
else
return ict_none;
}
/* Support for core dump NOTE sections. */
static bfd_boolean
elf64_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
int offset;
unsigned int size;
switch (note->descsz)
{
default:
return FALSE;
case 480: /* Linux/MIPS - N64 kernel */
/* 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 + 32);
/* pr_reg */
offset = 112;
size = 360;
break;
}
/* Make a ".reg/999" section. */
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
size, note->descpos + offset);
}
static bfd_boolean
elf64_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
{
switch (note->descsz)
{
default:
return FALSE;
case 136: /* Linux/MIPS - N64 kernel elf_prpsinfo */
elf_tdata (abfd)->core_program
= _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
elf_tdata (abfd)->core_command
= _bfd_elfcore_strndup (abfd, note->descdata + 56, 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;
}
/* 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_elf64_ecoff_debug_swap =
{
/* Symbol table magic number. */
magicSym2,
/* Alignment of debugging information. E.g., 4. */
8,
/* 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
};
/* Relocations in the 64 bit MIPS ELF ABI are more complex than in
standard ELF. This structure is used to redirect the relocation
handling routines. */
const struct elf_size_info mips_elf64_size_info =
{
sizeof (Elf64_External_Ehdr),
sizeof (Elf64_External_Phdr),
sizeof (Elf64_External_Shdr),
sizeof (Elf64_Mips_External_Rel),
sizeof (Elf64_Mips_External_Rela),
sizeof (Elf64_External_Sym),
sizeof (Elf64_External_Dyn),
sizeof (Elf_External_Note),
4, /* hash-table entry size */
3, /* internal relocations per external relocations */
64, /* arch_size */
3, /* log_file_align */
ELFCLASS64,
EV_CURRENT,
bfd_elf64_write_out_phdrs,
bfd_elf64_write_shdrs_and_ehdr,
mips_elf64_write_relocs,
bfd_elf64_swap_symbol_in,
bfd_elf64_swap_symbol_out,
mips_elf64_slurp_reloc_table,
bfd_elf64_slurp_symbol_table,
bfd_elf64_swap_dyn_in,
bfd_elf64_swap_dyn_out,
mips_elf64_be_swap_reloc_in,
mips_elf64_be_swap_reloc_out,
mips_elf64_be_swap_reloca_in,
mips_elf64_be_swap_reloca_out
};
#define ELF_ARCH bfd_arch_mips
#define ELF_MACHINE_CODE EM_MIPS
#define elf_backend_collect TRUE
#define elf_backend_type_change_ok TRUE
#define elf_backend_can_gc_sections TRUE
#define elf_info_to_howto mips_elf64_info_to_howto_rela
#define elf_info_to_howto_rel mips_elf64_info_to_howto_rel
#define elf_backend_object_p mips_elf64_object_p
#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
#define elf_backend_section_processing _bfd_mips_elf_section_processing
#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
#define elf_backend_fake_sections _bfd_mips_elf_fake_sections
#define elf_backend_section_from_bfd_section \
_bfd_mips_elf_section_from_bfd_section
#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
#define elf_backend_link_output_symbol_hook \
_bfd_mips_elf_link_output_symbol_hook
#define elf_backend_create_dynamic_sections \
_bfd_mips_elf_create_dynamic_sections
#define elf_backend_check_relocs _bfd_mips_elf_check_relocs
#define elf_backend_merge_symbol_attribute \
_bfd_mips_elf_merge_symbol_attribute
#define elf_backend_adjust_dynamic_symbol \
_bfd_mips_elf_adjust_dynamic_symbol
#define elf_backend_always_size_sections \
_bfd_mips_elf_always_size_sections
#define elf_backend_size_dynamic_sections \
_bfd_mips_elf_size_dynamic_sections
#define elf_backend_init_index_section _bfd_elf_init_1_index_section
#define elf_backend_relocate_section _bfd_mips_elf_relocate_section
#define elf_backend_finish_dynamic_symbol \
_bfd_mips_elf_finish_dynamic_symbol
#define elf_backend_finish_dynamic_sections \
_bfd_mips_elf_finish_dynamic_sections
#define elf_backend_final_write_processing \
_bfd_mips_elf_final_write_processing
#define elf_backend_additional_program_headers \
_bfd_mips_elf_additional_program_headers
#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
#define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
#define elf_backend_copy_indirect_symbol \
_bfd_mips_elf_copy_indirect_symbol
#define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
#define elf_backend_ignore_discarded_relocs \
_bfd_mips_elf_ignore_discarded_relocs
#define elf_backend_mips_irix_compat elf64_mips_irix_compat
#define elf_backend_mips_rtype_to_howto mips_elf64_rtype_to_howto
#define elf_backend_ecoff_debug_swap &mips_elf64_ecoff_debug_swap
#define elf_backend_size_info mips_elf64_size_info
#define elf_backend_grok_prstatus elf64_mips_grok_prstatus
#define elf_backend_grok_psinfo elf64_mips_grok_psinfo
#define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
/* MIPS ELF64 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_write_section _bfd_mips_elf_write_section
/* We don't set bfd_elf64_bfd_is_local_label_name because the 32-bit
MIPS-specific function only applies to IRIX5, which had no 64-bit
ABI. */
#define bfd_elf64_find_nearest_line _bfd_mips_elf_find_nearest_line
#define bfd_elf64_find_inliner_info _bfd_mips_elf_find_inliner_info
#define bfd_elf64_new_section_hook _bfd_mips_elf_new_section_hook
#define bfd_elf64_set_section_contents _bfd_mips_elf_set_section_contents
#define bfd_elf64_bfd_get_relocated_section_contents \
_bfd_elf_mips_get_relocated_section_contents
#define bfd_elf64_bfd_link_hash_table_create \
_bfd_mips_elf_link_hash_table_create
#define bfd_elf64_bfd_final_link _bfd_mips_elf_final_link
#define bfd_elf64_bfd_merge_private_bfd_data \
_bfd_mips_elf_merge_private_bfd_data
#define bfd_elf64_bfd_set_private_flags _bfd_mips_elf_set_private_flags
#define bfd_elf64_bfd_print_private_bfd_data \
_bfd_mips_elf_print_private_bfd_data
#define bfd_elf64_get_reloc_upper_bound mips_elf64_get_reloc_upper_bound
#define bfd_elf64_canonicalize_reloc mips_elf64_canonicalize_reloc
#define bfd_elf64_get_dynamic_reloc_upper_bound mips_elf64_get_dynamic_reloc_upper_bound
#define bfd_elf64_canonicalize_dynamic_reloc mips_elf64_canonicalize_dynamic_reloc
#define bfd_elf64_bfd_relax_section _bfd_mips_relax_section
/* MIPS ELF64 archive functions. */
#define bfd_elf64_archive_functions
extern bfd_boolean bfd_elf64_archive_slurp_armap
(bfd *);
extern bfd_boolean bfd_elf64_archive_write_armap
(bfd *, unsigned int, struct orl *, unsigned int, int);
#define bfd_elf64_archive_slurp_extended_name_table \
_bfd_archive_coff_slurp_extended_name_table
#define bfd_elf64_archive_construct_extended_name_table \
_bfd_archive_coff_construct_extended_name_table
#define bfd_elf64_archive_truncate_arname \
_bfd_archive_coff_truncate_arname
#define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
#define bfd_elf64_archive_openr_next_archived_file \
_bfd_archive_coff_openr_next_archived_file
#define bfd_elf64_archive_get_elt_at_index \
_bfd_archive_coff_get_elt_at_index
#define bfd_elf64_archive_generic_stat_arch_elt \
_bfd_archive_coff_generic_stat_arch_elt
#define bfd_elf64_archive_update_armap_timestamp \
_bfd_archive_coff_update_armap_timestamp
/* The SGI style (n)64 NewABI. */
#define TARGET_LITTLE_SYM bfd_elf64_littlemips_vec
#define TARGET_LITTLE_NAME "elf64-littlemips"
#define TARGET_BIG_SYM bfd_elf64_bigmips_vec
#define TARGET_BIG_NAME "elf64-bigmips"
#define ELF_MAXPAGESIZE 0x10000
#define ELF_COMMONPAGESIZE 0x1000
#include "elf64-target.h"
/* The SYSV-style 'traditional' (n)64 NewABI. */
#undef TARGET_LITTLE_SYM
#undef TARGET_LITTLE_NAME
#undef TARGET_BIG_SYM
#undef TARGET_BIG_NAME
#undef ELF_MAXPAGESIZE
#undef ELF_COMMONPAGESIZE
#define TARGET_LITTLE_SYM bfd_elf64_tradlittlemips_vec
#define TARGET_LITTLE_NAME "elf64-tradlittlemips"
#define TARGET_BIG_SYM bfd_elf64_tradbigmips_vec
#define TARGET_BIG_NAME "elf64-tradbigmips"
#define ELF_MAXPAGESIZE 0x10000
#define ELF_COMMONPAGESIZE 0x1000
#define elf64_bed elf64_tradbed
/* Include the target file again for this target. */
#include "elf64-target.h"
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