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binutils-gdb/bfd/elf32-mips.c
Maciej W. Rozycki 47275900ad PR ld/21375: MIPS: Fix non-zero run-time value for undefined weaks 
We have an issue in the MIPS backend, with the handling of undefined
hidden and internal weak symbols.  References to such symbols are
supposed to resolve to 0 according to the ELF gABI[1]:

"Unresolved weak symbols have a zero value."

and the 64-bit MIPS psABI[2]:

"If a symbol with one of these [hidden or internal] attributes has no
definition within the executable/DSO being linked, then it must be
resolved to allocated space if common, resolved to zero if weak, or an
error reported otherwise."

however if a GOT relocation is used, then a local GOT entry is created
and used to satisfy the reference.  Such an entry is then (in DSO and
PIE binaries) subject to the usual load-time relocation, which means a
non-zero value will be returned if the base address is non-zero.  This
will defeat the usual run-time sequence like:

void a (void) __attribute__ ((visibility ("hidden"), weak));

void
x (void)
{
  if (a)
    a ();
}

This can be reproduced with this simple code:

$ cat libtest.c
extern int a __attribute__ ((visibility ("hidden"), weak));

int *
x (void)
{
  return &a;
}
$ cat test.c

int *x (void);

int
main (void)
{
  printf ("a: %p\n", x ());

  return 0;
}
$ gcc -shared -fPIC -o libtest.so libtest.c
$ gcc -o test test.c -Wl,-rpath,$(pwd) libtest.so
$ ./test
a: 0x77184000
$

The usual approach targets take is making all the steps required to
assign a GOT entry for the symbol referred, and then leave its contents
at zero with no dynamic relocation attached, therefore ensuring that the
value does not change at load time.  However this is not going to work
with the implicitly relocated GOT the MIPS psABI specifies[3]:

"The dynamic linker relocates the global offset table by first adding
the difference between the base where the shared object is loaded and
the value of the dynamic tag DT_MIPS_BASE_ADDRESS to all local global
offset table entries."

and we cannot therefore use the local GOT part.

And we cannot offhand use the global part either, as the symbol would
then have to be exported and possibly wrongly preempt symbols in other
modules involved in the dynamic load, because as per the ELF gABI[1] we
are not allowed to enter a hidden or internal symbol into the dynamic
symbol table (and then use its associated GOT entry):

"A hidden symbol contained in a relocatable object must be either
removed or converted to STB_LOCAL binding by the link-editor when the
relocatable object is included in an executable file or shared object."

and:

"An internal symbol contained in a relocatable object must be either
removed or converted to STB_LOCAL binding by the link-editor when the
relocatable object is included in an executable file or shared object."

So we have to choose something else.

Our choice is further limited by the need for the reference associated
with the GOT relocation to stay within the signed 16-bit limit from the
GOT pointer base register, while being compliant with the ELF gABI and
the MIPS psABI.  However as Alan Modra has observed[4] one possibility
is to edit (relax) the code such that the GOT reference is removed
altogether.

Based on these observations then modify MIPS BFD linker backend code to:

1. Interpret code associated with GOT relocations and relax the usual LW
   or LD instructions into a corresponding immediate load operation that
   places the value of 0 in the intended register, while leaving the GOT
   entry allocated and initialized as usually.

2. Leave any other instructions associated with GOT relocations in place
   and instead redirect the reference to a global GOT entry associated
   with a special `__gnu_absolute_zero' symbol created for this purpose,
   whose value is 0, SHN_ABS section marks it absolute, binding is
   global and export class protected, ensuring that the locally provided
   value is always used at load time, and that the value is not
   relocated by the dynamic loader.

3. Adjust any high-part GOT relocation used, typically associated with
   a LUI instruction, accordingly, so that run-time consistency is
   maintained, either by resolving to the original entry if the
   instruction associated with the corresponding low-part GOT relocation
   has been relaxed to an immediate load (in which case the value loaded
   with LUI will be overwritten), or by also redirecting the reference
   to `__gnu_absolute_zero' to complete the GOT access sequence if that
   symbol has been used.

4. Add a target `elf_backend_hide_symbol' hook, for the three MIPS ABIs,
   which prevents the `__gnu_absolute_zero' symbol from being forced
   local, to ensure that the redirection works and the symbol remains
   global/protected with existing linker scripts unchanged.

5. Observing the issue with handling SHN_ABS symbols in the GNU dynamic
   loader, covered by glibc PR 19818, set the EI_ABIVERSION field in the
   ELF file header produced to 4 (ABI_ABSOLUTE) if `__gnu_absolute_zero'
   symbol has been produced and the target configured indicates the GNU
   operating system, so that broken versions of the GNU dynamic loader
   gracefully reject the file in loading rather than going astray.  Keep
   EI_ABIVERSION at the original value for other operating systems or if
   no `__gnu_absolute_zero' symbol has been made.

The name of the special `__gnu_absolute_zero' has no meaning other than
how a human reader can interpret it, as it is ignored in dynamic loading
in the handling of the scenarios concerned.  This is because the symbol
resolves locally, and it's only the symbol's attributes that matter so
that the associated GOT entry remains unchanged at load time.

Therefore the name is somewhat arbitrary, observing however the need to
use the name space reserved for the system so that it does not conflict
with a possible user symbol, and hence the leading underscore, and also
the `gnu' infix to denote a GNU feature.  Other implementations wishing
to address the problem in a similar way may choose a different name and
have the solution still work, possibly with a mixture of modules used in
a dynamic having symbols of different names provided, which will however
not interact with each other due to the protected export class.

The symbol can be referred explicitly, however the name is an internal
implementation detail rather than a part of the ABI, and therefore no
specific semantics is guaranteed.

One limitation of this change is that if `__gnu_absolute_zero' has been
already defined, then we do not wipe the old definition and all kinds of
odd behavior can result.  This is however like with other symbols we
internally define, such as `_GLOBAL_OFFSET_TABLE_' or `__rld_map', and
therefore left as a possible future enhancement.

As an optimization the relaxation of LW and LD instructions to a load of
immediate zero is always made, even SVR4 PIC code for code that will end
up in a regular (non-PIE) executable, because there is a cache advantage
with the avoidance of a load from the GOT, even if it is otherwise
guaranteed to remain zero.  It does not reliably happen though, due to a
symbol exportation issue affecting executables, covered by PR ld/21805.

One existing test case needs to be updated, as it triggers relaxation
introduced with this change and consequently linker output does not
match expectations anymore.  As we want to keep the original issue
covered with the test case modify it then to use the LWL instruction in
place of LW, and adjust the output expected accordingly.

References:

[1] "System V Application Binary Interface - DRAFT - 19 October 2010",
    The SCO Group, Section "Symbol Table",
    <http://www.sco.com/developers/gabi/2012-12-31/ch4.symtab.html>

[2] "64-bit ELF Object File Specification, Draft Version 2.5", MIPS
    Technologies / Silicon Graphics Computer Systems, Order Number
    007-4658-001, Section 2.5 "Symbol Table", p. 22,
    <http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf>

[3] "SYSTEM V APPLICATION BINARY INTERFACE, MIPS RISC Processor
    Supplement, 3rd Edition", Section "Global Offset Table", p. 5-10,
    <http://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf>

[4] "Undo dynamic symbol state after regular object sym type mismatch",
    <https://sourceware.org/ml/binutils/2017-07/msg00265.html>

	bfd/
	PR ld/21375
	* elfxx-mips.h (_bfd_mips_elf_hide_symbol): New prototype.
	(_bfd_mips_elf_linker_flags): Update prototype.
	* elf32-mips.c (elf_backend_hide_symbol): New macro.
	* elf64-mips.c (elf_backend_hide_symbol): Likewise.
	* elfn32-mips.c (elf_backend_hide_symbol): Likewise.
	* elfxx-mips.c (mips_elf_link_hash_table): Add
	`use_absolute_zero' and `gnu_target' members.
	(mips_elf_record_global_got_symbol): Call
	`_bfd_mips_elf_hide_symbol' rather than
	`_bfd_elf_link_hash_hide_symbol'.
	(mips_use_local_got_p): Return FALSE if the symbol is absolute.
	(mips_elf_obtain_contents): Reorder function.
	(mips_elf_nullify_got_load): New function.
	(mips_elf_calculate_relocation): Add `contents' parameter.
	Nullify GOT loads or if it is not possible, then redirect GOT
	relocations to the `__gnu_absolute_zero' symbol, for references
	that are supposed to resolve to zero.
	(mips_elf_define_absolute_zero): New function.
	(_bfd_mips_elf_check_relocs): Prepare for arrangements made in
	`mips_elf_calculate_relocation' for references made via the GOT
	that are supposed to resolve to zero.
	(_bfd_mips_elf_hide_symbol): New function.
	(_bfd_mips_elf_linker_flags): Add the `gnu_target' parameter,
	set the `gnu_target' member of the MIPS hash table.
	(MIPS_LIBC_ABI_ABSOLUTE): New enumeration constant.
	(_bfd_mips_post_process_headers): Use it.

	ld/
	PR ld/21375
	* emultempl/mipself.em: Set `gnu_target' according to ${target}.
	(mips_create_output_section_statements): Update call to
	`_bfd_mips_elf_linker_flags'.
	* testsuite/ld-mips-elf/pr21334.s: Use LWL rather than LW.
	* testsuite/ld-mips-elf/pr21334.dd: Update accordingly.
2018-09-14 20:22:56 +01:00

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/* MIPS-specific support for 32-bit ELF
Copyright (C) 1993-2018 Free Software Foundation, Inc.
Most of the information added by Ian Lance Taylor, Cygnus Support,
<ian@cygnus.com>.
N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
<mark@codesourcery.com>
Traditional MIPS targets support added by Koundinya.K, Dansk Data
Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
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 3 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 handles MIPS ELF targets. SGI Irix 5 uses a slightly
different MIPS ELF from other targets. This matters when linking.
This file supports both, switching at runtime. */
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "genlink.h"
#include "elf-bfd.h"
#include "elfxx-mips.h"
#include "elf/mips.h"
#include "elf-vxworks.h"
/* Get the ECOFF swapping routines. */
#include "coff/sym.h"
#include "coff/symconst.h"
#include "coff/internal.h"
#include "coff/ecoff.h"
#include "coff/mips.h"
#define ECOFF_SIGNED_32
#include "ecoffswap.h"
static bfd_reloc_status_type gprel32_with_gp
(bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
static bfd_reloc_status_type mips_elf_gprel32_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type mips32_64bit_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
static bfd_boolean mips_info_to_howto_rel
(bfd *, arelent *, Elf_Internal_Rela *);
static bfd_boolean mips_info_to_howto_rela
(bfd *, arelent *, Elf_Internal_Rela *);
static bfd_boolean mips_elf_sym_is_global
(bfd *, asymbol *);
static bfd_boolean mips_elf32_object_p
(bfd *);
static bfd_boolean mips_elf_is_local_label_name
(bfd *, const char *);
static bfd_reloc_status_type mips16_gprel_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type mips_elf_final_gp
(bfd *, asymbol *, bfd_boolean, char **, bfd_vma *);
static bfd_boolean mips_elf_assign_gp
(bfd *, bfd_vma *);
static bfd_boolean elf32_mips_grok_prstatus
(bfd *, Elf_Internal_Note *);
static bfd_boolean elf32_mips_grok_psinfo
(bfd *, Elf_Internal_Note *);
static irix_compat_t elf32_mips_irix_compat
(bfd *);
extern const bfd_target mips_elf32_be_vec;
extern const bfd_target mips_elf32_le_vec;
/* Nonzero if ABFD is using the N32 ABI. */
#define ABI_N32_P(abfd) \
((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
/* Whether we are trying to be compatible with IRIX at all. */
#define SGI_COMPAT(abfd) \
(elf32_mips_irix_compat (abfd) != ict_none)
/* The number of local .got entries we reserve. */
#define MIPS_RESERVED_GOTNO (2)
/* 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 relocation table used for SHT_REL sections. */
static reloc_howto_type elf_mips_howto_table_rel[] =
{
/* No relocation. */
HOWTO (R_MIPS_NONE, /* type */
0, /* rightshift */
3, /* 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 four
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 */
/* 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 */
_bfd_mips_elf32_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 */
_bfd_mips_elf32_gprel16_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_elf_gprel32_reloc, /* special_function */
"R_MIPS_GPREL32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The remaining relocs are defined on Irix 5, although they are
not defined by the ABI. */
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. */
/* FIXME: This is not handled correctly; a special function is
needed to put the most significant bit in the right place. */
HOWTO (R_MIPS_SHIFT6, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
6, /* bitsize */
FALSE, /* pc_relative */
6, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_SHIFT6", /* name */
TRUE, /* partial_inplace */
0x000007c4, /* src_mask */
0x000007c4, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 64 bit relocation. */
HOWTO (R_MIPS_64, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
64, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
mips32_64bit_reloc, /* special_function */
"R_MIPS_64", /* name */
TRUE, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
FALSE), /* pcrel_offset */
/* Displacement in the global offset table. */
HOWTO (R_MIPS_GOT_DISP, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_DISP", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Displacement to page pointer in the global offset table. */
HOWTO (R_MIPS_GOT_PAGE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_PAGE", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Offset from page pointer in the global offset table. */
HOWTO (R_MIPS_GOT_OFST, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_OFST", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* High 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_GOT_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Low 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_GOT_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GOT_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 64 bit subtraction. Used in the N32 ABI. */
HOWTO (R_MIPS_SUB, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
64, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_SUB", /* name */
TRUE, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
FALSE), /* pcrel_offset */
/* Used to cause the linker to insert and delete instructions? */
EMPTY_HOWTO (R_MIPS_INSERT_A),
EMPTY_HOWTO (R_MIPS_INSERT_B),
EMPTY_HOWTO (R_MIPS_DELETE),
/* Get the higher value of a 64 bit addend. */
HOWTO (R_MIPS_HIGHER, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_HIGHER", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Get the highest value of a 64 bit addend. */
HOWTO (R_MIPS_HIGHEST, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_HIGHEST", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* High 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_CALL_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_CALL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Low 16 bits of displacement in global offset table. */
HOWTO (R_MIPS_CALL_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_CALL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Section displacement. */
HOWTO (R_MIPS_SCN_DISP, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_SCN_DISP", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (R_MIPS_REL16),
EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
EMPTY_HOWTO (R_MIPS_PJUMP),
EMPTY_HOWTO (R_MIPS_RELGOT),
/* Protected jump conversion. This is an optimization hint. No
relocation is required for correctness. */
HOWTO (R_MIPS_JALR, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_JALR", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x00000000, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS GD/LD dynamic relocations. */
HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPMOD32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_MIPS_TLS_DTPREL32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPREL32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
/* TLS general dynamic variable reference. */
HOWTO (R_MIPS_TLS_GD, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_GD", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic variable reference. */
HOWTO (R_MIPS_TLS_LDM, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_LDM", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic offset. */
HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPREL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic offset. */
HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_DTPREL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS thread pointer offset. */
HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_GOTTPREL", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS IE dynamic relocations. */
HOWTO (R_MIPS_TLS_TPREL32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_TPREL32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
/* TLS thread pointer offset. */
HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_TPREL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS thread pointer offset. */
HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_TLS_TPREL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 32 bit relocation with no addend. */
HOWTO (R_MIPS_GLOB_DAT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GLOB_DAT", /* name */
FALSE, /* partial_inplace */
0x0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (52),
EMPTY_HOWTO (53),
EMPTY_HOWTO (54),
EMPTY_HOWTO (55),
EMPTY_HOWTO (56),
EMPTY_HOWTO (57),
EMPTY_HOWTO (58),
EMPTY_HOWTO (59),
HOWTO (R_MIPS_PC21_S2, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
21, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_PC21_S2", /* name */
TRUE, /* partial_inplace */
0x001fffff, /* src_mask */
0x001fffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_MIPS_PC26_S2, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_PC26_S2", /* name */
TRUE, /* partial_inplace */
0x03ffffff, /* src_mask */
0x03ffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_MIPS_PC18_S3, /* type */
3, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
18, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_PC18_S3", /* name */
TRUE, /* partial_inplace */
0x0003ffff, /* src_mask */
0x0003ffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_MIPS_PC19_S2, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
19, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_PC19_S2", /* name */
TRUE, /* partial_inplace */
0x0007ffff, /* src_mask */
0x0007ffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_MIPS_PCHI16, /* type */
16, /* 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_PCHI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_MIPS_PCLO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_PCLO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
};
/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
is a hack to make the linker think that we need 64 bit values. */
static reloc_howto_type elf_mips_ctor64_howto =
HOWTO (R_MIPS_64, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
mips32_64bit_reloc, /* special_function */
"R_MIPS_64", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE); /* pcrel_offset */
static reloc_howto_type elf_mips16_howto_table_rel[] =
{
/* The reloc used for the mips16 jump instruction. */
HOWTO (R_MIPS16_26, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
/* This needs complex overflow
detection, because the upper four
bits must match the PC. */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS16_26", /* name */
TRUE, /* partial_inplace */
0x3ffffff, /* src_mask */
0x3ffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The reloc used for the mips16 gprel instruction. */
HOWTO (R_MIPS16_GPREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
mips16_gprel_reloc, /* special_function */
"R_MIPS16_GPREL", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A MIPS16 reference to the global offset table. */
HOWTO (R_MIPS16_GOT16, /* 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_got16_reloc, /* special_function */
"R_MIPS16_GOT16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A MIPS16 call through the global offset table. */
HOWTO (R_MIPS16_CALL16, /* 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_MIPS16_CALL16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 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 */
/* MIPS16 TLS general dynamic variable reference. */
HOWTO (R_MIPS16_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_MIPS16_TLS_GD", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* MIPS16 TLS local dynamic variable reference. */
HOWTO (R_MIPS16_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_MIPS16_TLS_LDM", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* MIPS16 TLS local dynamic offset. */
HOWTO (R_MIPS16_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_MIPS16_TLS_DTPREL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* MIPS16 TLS local dynamic offset. */
HOWTO (R_MIPS16_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_MIPS16_TLS_DTPREL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* MIPS16 TLS thread pointer offset. */
HOWTO (R_MIPS16_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_MIPS16_TLS_GOTTPREL", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* MIPS16 TLS thread pointer offset. */
HOWTO (R_MIPS16_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_MIPS16_TLS_TPREL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* MIPS16 TLS thread pointer offset. */
HOWTO (R_MIPS16_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_MIPS16_TLS_TPREL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* MIPS16 16-bit PC-relative branch offset. */
HOWTO (R_MIPS16_PC16_S1, /* type */
1, /* 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_MIPS16_PC16_S1", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
};
static reloc_howto_type elf_micromips_howto_table_rel[] =
{
EMPTY_HOWTO (130),
EMPTY_HOWTO (131),
EMPTY_HOWTO (132),
/* 26 bit jump address. */
HOWTO (R_MICROMIPS_26_S1, /* type */
1, /* 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_MICROMIPS_26_S1", /* name */
TRUE, /* partial_inplace */
0x3ffffff, /* src_mask */
0x3ffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* High 16 bits of symbol value. */
HOWTO (R_MICROMIPS_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_MICROMIPS_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Low 16 bits of symbol value. */
HOWTO (R_MICROMIPS_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_MICROMIPS_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* GP relative reference. */
HOWTO (R_MICROMIPS_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 */
_bfd_mips_elf32_gprel16_reloc, /* special_function */
"R_MICROMIPS_GPREL16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Reference to literal section. */
HOWTO (R_MICROMIPS_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 */
_bfd_mips_elf32_gprel16_reloc, /* special_function */
"R_MICROMIPS_LITERAL", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Reference to global offset table. */
HOWTO (R_MICROMIPS_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_MICROMIPS_GOT16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* This is for microMIPS branches. */
HOWTO (R_MICROMIPS_PC7_S1, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
7, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MICROMIPS_PC7_S1", /* name */
TRUE, /* partial_inplace */
0x0000007f, /* src_mask */
0x0000007f, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_MICROMIPS_PC10_S1, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
10, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MICROMIPS_PC10_S1", /* name */
TRUE, /* partial_inplace */
0x000003ff, /* src_mask */
0x000003ff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_MICROMIPS_PC16_S1, /* type */
1, /* 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_MICROMIPS_PC16_S1", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* 16 bit call through global offset table. */
HOWTO (R_MICROMIPS_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_MICROMIPS_CALL16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (143),
EMPTY_HOWTO (144),
/* Displacement in the global offset table. */
HOWTO (R_MICROMIPS_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_MICROMIPS_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_MICROMIPS_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_MICROMIPS_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_MICROMIPS_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_MICROMIPS_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_MICROMIPS_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_MICROMIPS_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_MICROMIPS_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_MICROMIPS_GOT_LO16",/* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 64 bit subtraction. Used in the N32 ABI. */
HOWTO (R_MICROMIPS_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_MICROMIPS_SUB", /* name */
TRUE, /* partial_inplace */
MINUS_ONE, /* src_mask */
MINUS_ONE, /* dst_mask */
FALSE), /* pcrel_offset */
/* Get the higher value of a 64 bit addend. */
HOWTO (R_MICROMIPS_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_MICROMIPS_HIGHER", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Get the highest value of a 64 bit addend. */
HOWTO (R_MICROMIPS_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_MICROMIPS_HIGHEST", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* High 16 bits of displacement in global offset table. */
HOWTO (R_MICROMIPS_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_MICROMIPS_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_MICROMIPS_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_MICROMIPS_CALL_LO16",/* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Section displacement. */
HOWTO (R_MICROMIPS_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_MICROMIPS_SCN_DISP",/* 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_MICROMIPS_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_MICROMIPS_JALR", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x00000000, /* dst_mask */
FALSE), /* pcrel_offset */
/* Low 16 bits of symbol value. Note that the high 16 bits of symbol values
must be zero. This is used for relaxation. */
HOWTO (R_MICROMIPS_HI0_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_MICROMIPS_HI0_LO16",/* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (158),
EMPTY_HOWTO (159),
EMPTY_HOWTO (160),
EMPTY_HOWTO (161),
/* TLS general dynamic variable reference. */
HOWTO (R_MICROMIPS_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_MICROMIPS_TLS_GD", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic variable reference. */
HOWTO (R_MICROMIPS_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_MICROMIPS_TLS_LDM", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic offset. */
HOWTO (R_MICROMIPS_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_MICROMIPS_TLS_DTPREL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS local dynamic offset. */
HOWTO (R_MICROMIPS_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_MICROMIPS_TLS_DTPREL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS thread pointer offset. */
HOWTO (R_MICROMIPS_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_MICROMIPS_TLS_GOTTPREL", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (167),
EMPTY_HOWTO (168),
/* TLS thread pointer offset. */
HOWTO (R_MICROMIPS_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_MICROMIPS_TLS_TPREL_HI16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* TLS thread pointer offset. */
HOWTO (R_MICROMIPS_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_MICROMIPS_TLS_TPREL_LO16", /* name */
TRUE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (171),
/* GP- and PC-relative relocations. */
HOWTO (R_MICROMIPS_GPREL7_S2, /* type */
2, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
7, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf32_gprel16_reloc, /* special_function */
"R_MICROMIPS_GPREL7_S2", /* name */
TRUE, /* partial_inplace */
0x0000007f, /* src_mask */
0x0000007f, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_MICROMIPS_PC23_S2, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
23, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MICROMIPS_PC23_S2", /* name */
TRUE, /* partial_inplace */
0x007fffff, /* src_mask */
0x007fffff, /* dst_mask */
TRUE), /* pcrel_offset */
};
/* 16 bit offset for pc-relative branches. */
static reloc_howto_type elf_mips_gnu_rel16_s2 =
HOWTO (R_MIPS_GNU_REL16_S2, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_GNU_REL16_S2", /* name */
TRUE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
TRUE); /* pcrel_offset */
/* 32 bit pc-relative. This was a GNU extension used by embedded-PIC.
It was co-opted by mips-linux for exception-handling data. GCC stopped
using it in May, 2004, then started using it again for compact unwind
tables. */
static reloc_howto_type elf_mips_gnu_pcrel32 =
HOWTO (R_MIPS_PC32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_PC32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE); /* pcrel_offset */
/* GNU extension to record C++ vtable hierarchy */
static reloc_howto_type elf_mips_gnu_vtinherit_howto =
HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
NULL, /* special_function */
"R_MIPS_GNU_VTINHERIT", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE); /* pcrel_offset */
/* GNU extension to record C++ vtable member usage */
static reloc_howto_type elf_mips_gnu_vtentry_howto =
HOWTO (R_MIPS_GNU_VTENTRY, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
"R_MIPS_GNU_VTENTRY", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE); /* pcrel_offset */
/* Originally a VxWorks extension, but now used for other systems too. */
static reloc_howto_type elf_mips_copy_howto =
HOWTO (R_MIPS_COPY, /* type */
0, /* rightshift */
0, /* this one is variable size */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_COPY", /* name */
FALSE, /* partial_inplace */
0x0, /* src_mask */
0x0, /* dst_mask */
FALSE); /* pcrel_offset */
/* Originally a VxWorks extension, but now used for other systems too. */
static reloc_howto_type elf_mips_jump_slot_howto =
HOWTO (R_MIPS_JUMP_SLOT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_JUMP_SLOT", /* name */
FALSE, /* partial_inplace */
0x0, /* src_mask */
0x0, /* dst_mask */
FALSE); /* pcrel_offset */
/* Used in EH tables. */
static reloc_howto_type elf_mips_eh_howto =
HOWTO (R_MIPS_EH, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
_bfd_mips_elf_generic_reloc, /* special_function */
"R_MIPS_EH", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE); /* pcrel_offset */
/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
dangerous relocation. */
static bfd_boolean
mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
{
unsigned int count;
asymbol **sym;
unsigned int i;
/* If we've already figured out what GP will be, just return it. */
*pgp = _bfd_get_gp_value (output_bfd);
if (*pgp)
return TRUE;
count = bfd_get_symcount (output_bfd);
sym = bfd_get_outsymbols (output_bfd);
/* The linker script will have created a symbol named `_gp' with the
appropriate value. */
if (sym == NULL)
i = count;
else
{
for (i = 0; i < count; i++, sym++)
{
register const char *name;
name = bfd_asymbol_name (*sym);
if (*name == '_' && strcmp (name, "_gp") == 0)
{
*pgp = bfd_asymbol_value (*sym);
_bfd_set_gp_value (output_bfd, *pgp);
break;
}
}
}
if (i >= count)
{
/* Only get the error once. */
*pgp = 4;
_bfd_set_gp_value (output_bfd, *pgp);
return FALSE;
}
return TRUE;
}
/* We have to figure out the gp value, so that we can adjust the
symbol value correctly. We look up the symbol _gp in the output
BFD. If we can't find it, we're stuck. We cache it in the ELF
target data. We don't need to adjust the symbol value for an
external symbol if we are producing relocatable output. */
static bfd_reloc_status_type
mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
char **error_message, bfd_vma *pgp)
{
if (bfd_is_und_section (symbol->section)
&& ! relocatable)
{
*pgp = 0;
return bfd_reloc_undefined;
}
*pgp = _bfd_get_gp_value (output_bfd);
if (*pgp == 0
&& (! relocatable
|| (symbol->flags & BSF_SECTION_SYM) != 0))
{
if (relocatable)
{
/* Make up a value. */
*pgp = symbol->section->output_section->vma /*+ 0x4000*/;
_bfd_set_gp_value (output_bfd, *pgp);
}
else if (!mips_elf_assign_gp (output_bfd, pgp))
{
*error_message =
(char *) _("GP relative relocation when _gp not defined");
return bfd_reloc_dangerous;
}
}
return bfd_reloc_ok;
}
/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
become the offset from the gp register. This function also handles
R_MIPS_LITERAL relocations, although those can be handled more
cleverly because the entries in the .lit8 and .lit4 sections can be
merged. */
bfd_reloc_status_type
_bfd_mips_elf32_gprel16_reloc (bfd *abfd, arelent *reloc_entry,
asymbol *symbol, void *data,
asection *input_section, bfd *output_bfd,
char **error_message)
{
bfd_boolean relocatable;
bfd_reloc_status_type ret;
bfd_byte *location;
bfd_vma gp;
/* R_MIPS_LITERAL/R_MICROMIPS_LITERAL relocations are defined for local
symbols only. */
if (literal_reloc_p (reloc_entry->howto->type)
&& output_bfd != NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (symbol->flags & BSF_LOCAL) != 0)
{
*error_message = (char *)
_("literal relocation occurs for an external symbol");
return bfd_reloc_outofrange;
}
if (output_bfd != NULL)
relocatable = TRUE;
else
{
relocatable = FALSE;
output_bfd = symbol->section->output_section->owner;
}
ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
&gp);
if (ret != bfd_reloc_ok)
return ret;
location = (bfd_byte *) data + reloc_entry->address;
_bfd_mips_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_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
location);
return ret;
}
/* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
become the offset from the gp register. */
static bfd_reloc_status_type
mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
void *data, asection *input_section, bfd *output_bfd,
char **error_message)
{
bfd_boolean relocatable;
bfd_reloc_status_type ret;
bfd_vma gp;
/* R_MIPS_GPREL32 relocations are defined for local symbols only. */
if (output_bfd != NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (symbol->flags & BSF_LOCAL) != 0)
{
*error_message = (char *)
_("32bits gp relative relocation occurs for an external symbol");
return bfd_reloc_outofrange;
}
if (output_bfd != NULL)
relocatable = TRUE;
else
{
relocatable = FALSE;
output_bfd = symbol->section->output_section->owner;
}
ret = mips_elf_final_gp (output_bfd, symbol, relocatable,
error_message, &gp);
if (ret != bfd_reloc_ok)
return ret;
return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
relocatable, data, gp);
}
static bfd_reloc_status_type
gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
asection *input_section, bfd_boolean relocatable,
void *data, bfd_vma gp)
{
bfd_vma relocation;
bfd_vma val;
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
return bfd_reloc_outofrange;
/* Set val to the offset into the section or symbol. */
val = reloc_entry->addend;
if (reloc_entry->howto->partial_inplace)
val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
/* Adjust val for the final section location and GP value. If we
are producing relocatable output, we don't want to do this for
an external symbol. */
if (! relocatable
|| (symbol->flags & BSF_SECTION_SYM) != 0)
val += relocation - gp;
if (reloc_entry->howto->partial_inplace)
bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
else
reloc_entry->addend = val;
if (relocatable)
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
/* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
generated when addresses are 64 bits. The upper 32 bits are a simple
sign extension. */
static bfd_reloc_status_type
mips32_64bit_reloc (bfd *abfd, arelent *reloc_entry,
asymbol *symbol ATTRIBUTE_UNUSED,
void *data, asection *input_section,
bfd *output_bfd, char **error_message)
{
bfd_reloc_status_type r;
arelent reloc32;
unsigned long val;
bfd_size_type addr;
/* Do a normal 32 bit relocation on the lower 32 bits. */
reloc32 = *reloc_entry;
if (bfd_big_endian (abfd))
reloc32.address += 4;
reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32];
r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
output_bfd, error_message);
/* Sign extend into the upper 32 bits. */
val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
if ((val & 0x80000000) != 0)
val = 0xffffffff;
else
val = 0;
addr = reloc_entry->address;
if (bfd_little_endian (abfd))
addr += 4;
bfd_put_32 (abfd, val, (bfd_byte *) data + addr);
return r;
}
/* Handle a mips16 GP relative reloc. */
static bfd_reloc_status_type
mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
void *data, asection *input_section, bfd *output_bfd,
char **error_message)
{
bfd_boolean relocatable;
bfd_reloc_status_type ret;
bfd_byte *location;
bfd_vma gp;
/* If we're relocating, and this is an external symbol, we don't want
to change anything. */
if (output_bfd != NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (symbol->flags & BSF_LOCAL) != 0)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
if (output_bfd != NULL)
relocatable = TRUE;
else
{
relocatable = FALSE;
output_bfd = symbol->section->output_section->owner;
}
ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
&gp);
if (ret != bfd_reloc_ok)
return ret;
location = (bfd_byte *) data + reloc_entry->address;
_bfd_mips_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_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
location);
return ret;
}
/* A mapping from BFD reloc types to MIPS ELF reloc types. */
struct elf_reloc_map {
bfd_reloc_code_real_type bfd_val;
enum elf_mips_reloc_type elf_val;
};
static const struct elf_reloc_map mips_reloc_map[] =
{
{ BFD_RELOC_NONE, R_MIPS_NONE },
{ BFD_RELOC_16, R_MIPS_16 },
{ BFD_RELOC_32, R_MIPS_32 },
/* There is no BFD reloc for R_MIPS_REL32. */
{ BFD_RELOC_64, R_MIPS_64 },
{ BFD_RELOC_MIPS_JMP, R_MIPS_26 },
{ BFD_RELOC_HI16_S, R_MIPS_HI16 },
{ BFD_RELOC_LO16, R_MIPS_LO16 },
{ BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
{ BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
{ BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
{ BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
{ BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
{ BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
{ BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
{ BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
{ BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
{ BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
{ BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
{ BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
{ BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
{ BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
{ BFD_RELOC_MIPS_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 },
{ BFD_RELOC_MIPS_21_PCREL_S2, R_MIPS_PC21_S2 },
{ BFD_RELOC_MIPS_26_PCREL_S2, R_MIPS_PC26_S2 },
{ BFD_RELOC_MIPS_18_PCREL_S3, R_MIPS_PC18_S3 },
{ BFD_RELOC_MIPS_19_PCREL_S2, R_MIPS_PC19_S2 },
{ BFD_RELOC_HI16_S_PCREL, R_MIPS_PCHI16 },
{ BFD_RELOC_LO16_PCREL, R_MIPS_PCLO16 }
};
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_GOT16, R_MIPS16_GOT16 - R_MIPS16_min },
{ BFD_RELOC_MIPS16_CALL16, R_MIPS16_CALL16 - R_MIPS16_min },
{ BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
{ BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
{ BFD_RELOC_MIPS16_TLS_GD, R_MIPS16_TLS_GD - R_MIPS16_min },
{ BFD_RELOC_MIPS16_TLS_LDM, R_MIPS16_TLS_LDM - R_MIPS16_min },
{ BFD_RELOC_MIPS16_TLS_DTPREL_HI16,
R_MIPS16_TLS_DTPREL_HI16 - R_MIPS16_min },
{ BFD_RELOC_MIPS16_TLS_DTPREL_LO16,
R_MIPS16_TLS_DTPREL_LO16 - R_MIPS16_min },
{ BFD_RELOC_MIPS16_TLS_GOTTPREL, R_MIPS16_TLS_GOTTPREL - R_MIPS16_min },
{ BFD_RELOC_MIPS16_TLS_TPREL_HI16, R_MIPS16_TLS_TPREL_HI16 - R_MIPS16_min },
{ BFD_RELOC_MIPS16_TLS_TPREL_LO16, R_MIPS16_TLS_TPREL_LO16 - R_MIPS16_min },
{ BFD_RELOC_MIPS16_16_PCREL_S1, R_MIPS16_PC16_S1 - R_MIPS16_min }
};
static const struct elf_reloc_map micromips_reloc_map[] =
{
{ BFD_RELOC_MICROMIPS_JMP, R_MICROMIPS_26_S1 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_HI16_S, R_MICROMIPS_HI16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_LO16, R_MICROMIPS_LO16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_GPREL16, R_MICROMIPS_GPREL16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_LITERAL, R_MICROMIPS_LITERAL - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_GOT16, R_MICROMIPS_GOT16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_7_PCREL_S1, R_MICROMIPS_PC7_S1 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_10_PCREL_S1, R_MICROMIPS_PC10_S1 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_16_PCREL_S1, R_MICROMIPS_PC16_S1 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_CALL16, R_MICROMIPS_CALL16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_GOT_DISP, R_MICROMIPS_GOT_DISP - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_GOT_PAGE, R_MICROMIPS_GOT_PAGE - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_GOT_OFST, R_MICROMIPS_GOT_OFST - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_GOT_HI16, R_MICROMIPS_GOT_HI16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_GOT_LO16, R_MICROMIPS_GOT_LO16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_SUB, R_MICROMIPS_SUB - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_HIGHER, R_MICROMIPS_HIGHER - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_HIGHEST, R_MICROMIPS_HIGHEST - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_CALL_HI16, R_MICROMIPS_CALL_HI16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_CALL_LO16, R_MICROMIPS_CALL_LO16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_SCN_DISP, R_MICROMIPS_SCN_DISP - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_JALR, R_MICROMIPS_JALR - R_MICROMIPS_min },
/* There is no BFD reloc for R_MICROMIPS_HI0_LO16. */
{ BFD_RELOC_MICROMIPS_TLS_GD, R_MICROMIPS_TLS_GD - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_TLS_LDM, R_MICROMIPS_TLS_LDM - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16,
R_MICROMIPS_TLS_DTPREL_HI16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16,
R_MICROMIPS_TLS_DTPREL_LO16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_TLS_GOTTPREL,
R_MICROMIPS_TLS_GOTTPREL - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_TLS_TPREL_HI16,
R_MICROMIPS_TLS_TPREL_HI16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_TLS_TPREL_LO16,
R_MICROMIPS_TLS_TPREL_LO16 - R_MICROMIPS_min },
/* There is no BFD reloc for R_MICROMIPS_GPREL7_S2. */
/* There is no BFD reloc for R_MICROMIPS_PC23_S2. */
};
/* Given a BFD reloc type, return a howto structure. */
static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
{
unsigned int i;
reloc_howto_type *howto_table = elf_mips_howto_table_rel;
reloc_howto_type *howto16_table = elf_mips16_howto_table_rel;
reloc_howto_type *howto_micromips_table = elf_micromips_howto_table_rel;
for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
i++)
{
if (mips_reloc_map[i].bfd_val == code)
return &howto_table[(int) mips_reloc_map[i].elf_val];
}
for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
i++)
{
if (mips16_reloc_map[i].bfd_val == code)
return &howto16_table[(int) mips16_reloc_map[i].elf_val];
}
for (i = 0; i < sizeof (micromips_reloc_map) / sizeof (struct elf_reloc_map);
i++)
{
if (micromips_reloc_map[i].bfd_val == code)
return &howto_micromips_table[(int) micromips_reloc_map[i].elf_val];
}
switch (code)
{
default:
bfd_set_error (bfd_error_bad_value);
return NULL;
case BFD_RELOC_CTOR:
/* We need to handle BFD_RELOC_CTOR specially.
Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
size of addresses of the ABI. */
if ((elf_elfheader (abfd)->e_flags & (E_MIPS_ABI_O64
| E_MIPS_ABI_EABI64)) != 0)
return &elf_mips_ctor64_howto;
else
return &howto_table[(int) R_MIPS_32];
case BFD_RELOC_VTABLE_INHERIT:
return &elf_mips_gnu_vtinherit_howto;
case BFD_RELOC_VTABLE_ENTRY:
return &elf_mips_gnu_vtentry_howto;
case BFD_RELOC_32_PCREL:
return &elf_mips_gnu_pcrel32;
case BFD_RELOC_MIPS_COPY:
return &elf_mips_copy_howto;
case BFD_RELOC_MIPS_JUMP_SLOT:
return &elf_mips_jump_slot_howto;
case BFD_RELOC_MIPS_EH:
return &elf_mips_eh_howto;
}
}
static reloc_howto_type *
bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
const char *r_name)
{
unsigned int i;
for (i = 0;
i < (sizeof (elf_mips_howto_table_rel)
/ sizeof (elf_mips_howto_table_rel[0]));
i++)
if (elf_mips_howto_table_rel[i].name != NULL
&& strcasecmp (elf_mips_howto_table_rel[i].name, r_name) == 0)
return &elf_mips_howto_table_rel[i];
for (i = 0;
i < (sizeof (elf_mips16_howto_table_rel)
/ sizeof (elf_mips16_howto_table_rel[0]));
i++)
if (elf_mips16_howto_table_rel[i].name != NULL
&& strcasecmp (elf_mips16_howto_table_rel[i].name, r_name) == 0)
return &elf_mips16_howto_table_rel[i];
for (i = 0;
i < (sizeof (elf_micromips_howto_table_rel)
/ sizeof (elf_micromips_howto_table_rel[0]));
i++)
if (elf_micromips_howto_table_rel[i].name != NULL
&& strcasecmp (elf_micromips_howto_table_rel[i].name, r_name) == 0)
return &elf_micromips_howto_table_rel[i];
if (strcasecmp (elf_mips_gnu_pcrel32.name, r_name) == 0)
return &elf_mips_gnu_pcrel32;
if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0)
return &elf_mips_gnu_rel16_s2;
if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0)
return &elf_mips_gnu_vtinherit_howto;
if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0)
return &elf_mips_gnu_vtentry_howto;
if (strcasecmp (elf_mips_copy_howto.name, r_name) == 0)
return &elf_mips_copy_howto;
if (strcasecmp (elf_mips_jump_slot_howto.name, r_name) == 0)
return &elf_mips_jump_slot_howto;
if (strcasecmp (elf_mips_eh_howto.name, r_name) == 0)
return &elf_mips_eh_howto;
return NULL;
}
/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
static reloc_howto_type *
mips_elf32_rtype_to_howto (bfd *abfd,
unsigned int r_type,
bfd_boolean rela_p ATTRIBUTE_UNUSED)
{
reloc_howto_type *howto = NULL;
switch (r_type)
{
case R_MIPS_GNU_VTINHERIT:
return &elf_mips_gnu_vtinherit_howto;
case R_MIPS_GNU_VTENTRY:
return &elf_mips_gnu_vtentry_howto;
case R_MIPS_GNU_REL16_S2:
return &elf_mips_gnu_rel16_s2;
case R_MIPS_PC32:
return &elf_mips_gnu_pcrel32;
case R_MIPS_COPY:
return &elf_mips_copy_howto;
case R_MIPS_JUMP_SLOT:
return &elf_mips_jump_slot_howto;
case R_MIPS_EH:
return &elf_mips_eh_howto;
default:
if (r_type >= R_MICROMIPS_min && r_type < R_MICROMIPS_max)
howto = &elf_micromips_howto_table_rel[r_type - R_MICROMIPS_min];
if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
howto = &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
if (r_type < R_MIPS_max)
howto = &elf_mips_howto_table_rel[r_type];
if (howto != NULL && howto->name != NULL)
return howto;
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
abfd, r_type);
bfd_set_error (bfd_error_bad_value);
return NULL;
}
}
/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
static bfd_boolean
mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
cache_ptr->howto = mips_elf32_rtype_to_howto (abfd, r_type, FALSE);
if (cache_ptr->howto == NULL)
return FALSE;
/* The addend for a GPREL16 or LITERAL relocation comes from the GP
value for the object file. We get the addend now, rather than
when we do the relocation, because the symbol manipulations done
by the linker may cause us to lose track of the input BFD. */
if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
&& (gprel16_reloc_p (r_type) || literal_reloc_p (r_type)))
cache_ptr->addend = elf_gp (abfd);
return TRUE;
}
/* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
static bfd_boolean
mips_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
{
return mips_info_to_howto_rel (abfd, cache_ptr, dst);
/* If we ever need to do any extra processing with dst->r_addend
(the field omitted in an Elf_Internal_Rel) we can do it here. */
}
/* Determine whether a symbol is global for the purposes of splitting
the symbol table into global symbols and local symbols. At least
on Irix 5, this split must be between section symbols and all other
symbols. On most ELF targets the split is between static symbols
and externally visible symbols. */
static bfd_boolean
mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
{
if (SGI_COMPAT (abfd))
return (sym->flags & BSF_SECTION_SYM) == 0;
else
return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0
|| bfd_is_und_section (bfd_get_section (sym))
|| bfd_is_com_section (bfd_get_section (sym)));
}
/* Set the right machine number for a MIPS ELF file. */
static bfd_boolean
mips_elf32_object_p (bfd *abfd)
{
unsigned long mach;
if (ABI_N32_P (abfd))
return FALSE;
/* Irix 5 and 6 are broken. Object file symbol tables are not always
sorted correctly such that local symbols precede global symbols,
and the sh_info field in the symbol table is not always right. */
if (SGI_COMPAT (abfd))
elf_bad_symtab (abfd) = TRUE;
mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
return TRUE;
}
/* MIPS ELF local labels start with '$', not 'L'. */
static bfd_boolean
mips_elf_is_local_label_name (bfd *abfd, const char *name)
{
if (name[0] == '$')
return TRUE;
/* On Irix 6, the labels go back to starting with '.', so we accept
the generic ELF local label syntax as well. */
return _bfd_elf_is_local_label_name (abfd, name);
}
/* Support for core dump NOTE sections. */
static bfd_boolean
elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
int offset;
unsigned int size;
switch (note->descsz)
{
default:
return FALSE;
case 256: /* Linux/MIPS */
/* pr_cursig */
elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
/* pr_pid */
elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
/* pr_reg */
offset = 72;
size = 180;
break;
}
/* Make a ".reg/999" section. */
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
size, note->descpos + offset);
}
static bfd_boolean
elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
{
switch (note->descsz)
{
default:
return FALSE;
case 128: /* Linux/MIPS elf_prpsinfo */
elf_tdata (abfd)->core->pid
= bfd_get_32 (abfd, note->descdata + 16);
elf_tdata (abfd)->core->program
= _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
elf_tdata (abfd)->core->command
= _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
}
/* Note that for some reason, a spurious space is tacked
onto the end of the args in some (at least one anyway)
implementations, so strip it off if it exists. */
{
char *command = elf_tdata (abfd)->core->command;
int n = strlen (command);
if (0 < n && command[n - 1] == ' ')
command[n - 1] = '\0';
}
return TRUE;
}
/* Write Linux core PRSTATUS note into core file. */
static char *
elf32_mips_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
...)
{
switch (note_type)
{
default:
return NULL;
case NT_PRPSINFO:
BFD_FAIL ();
return NULL;
case NT_PRSTATUS:
{
char data[256];
va_list ap;
long pid;
int cursig;
const void *greg;
va_start (ap, note_type);
memset (data, 0, 72);
pid = va_arg (ap, long);
bfd_put_32 (abfd, pid, data + 24);
cursig = va_arg (ap, int);
bfd_put_16 (abfd, cursig, data + 12);
greg = va_arg (ap, const void *);
memcpy (data + 72, greg, 180);
memset (data + 252, 0, 4);
va_end (ap);
return elfcore_write_note (abfd, buf, bufsiz,
"CORE", note_type, data, sizeof (data));
}
}
}
/* Remove the magic _gp_disp symbol from the symbol tables. */
static bfd_boolean
elf32_mips_fixup_symbol (struct bfd_link_info *info,
struct elf_link_hash_entry *h)
{
if (strcmp (h->root.root.string, "_gp_disp") == 0)
_bfd_elf_link_hash_hide_symbol (info, h, TRUE);
return TRUE;
}
/* Depending on the target vector we generate some version of Irix
executables or "normal" MIPS ELF ABI executables. */
static irix_compat_t
elf32_mips_irix_compat (bfd *abfd)
{
if ((abfd->xvec == &mips_elf32_be_vec)
|| (abfd->xvec == &mips_elf32_le_vec))
return ict_irix5;
else
return ict_none;
}
/* ECOFF swapping routines. These are used when dealing with the
.mdebug section, which is in the ECOFF debugging format. */
static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
/* Symbol table magic number. */
magicSym,
/* Alignment of debugging information. E.g., 4. */
4,
/* Sizes of external symbolic information. */
sizeof (struct hdr_ext),
sizeof (struct dnr_ext),
sizeof (struct pdr_ext),
sizeof (struct sym_ext),
sizeof (struct opt_ext),
sizeof (struct fdr_ext),
sizeof (struct rfd_ext),
sizeof (struct ext_ext),
/* Functions to swap in external symbolic data. */
ecoff_swap_hdr_in,
ecoff_swap_dnr_in,
ecoff_swap_pdr_in,
ecoff_swap_sym_in,
ecoff_swap_opt_in,
ecoff_swap_fdr_in,
ecoff_swap_rfd_in,
ecoff_swap_ext_in,
_bfd_ecoff_swap_tir_in,
_bfd_ecoff_swap_rndx_in,
/* Functions to swap out external symbolic data. */
ecoff_swap_hdr_out,
ecoff_swap_dnr_out,
ecoff_swap_pdr_out,
ecoff_swap_sym_out,
ecoff_swap_opt_out,
ecoff_swap_fdr_out,
ecoff_swap_rfd_out,
ecoff_swap_ext_out,
_bfd_ecoff_swap_tir_out,
_bfd_ecoff_swap_rndx_out,
/* Function to read in symbolic data. */
_bfd_mips_elf_read_ecoff_info
};
#define ELF_ARCH bfd_arch_mips
#define ELF_TARGET_ID MIPS_ELF_DATA
#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_backend_gc_mark_extra_sections \
_bfd_mips_elf_gc_mark_extra_sections
#define elf_info_to_howto mips_info_to_howto_rela
#define elf_info_to_howto_rel mips_info_to_howto_rel
#define elf_backend_sym_is_global mips_elf_sym_is_global
#define elf_backend_object_p mips_elf32_object_p
#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
#define elf_backend_section_processing _bfd_mips_elf_section_processing
#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
#define elf_backend_fake_sections _bfd_mips_elf_fake_sections
#define elf_backend_section_from_bfd_section \
_bfd_mips_elf_section_from_bfd_section
#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
#define elf_backend_link_output_symbol_hook \
_bfd_mips_elf_link_output_symbol_hook
#define elf_backend_create_dynamic_sections \
_bfd_mips_elf_create_dynamic_sections
#define elf_backend_check_relocs _bfd_mips_elf_check_relocs
#define elf_backend_merge_symbol_attribute \
_bfd_mips_elf_merge_symbol_attribute
#define elf_backend_get_target_dtag _bfd_mips_elf_get_target_dtag
#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_copy_indirect_symbol \
_bfd_mips_elf_copy_indirect_symbol
#define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
#define elf_backend_fixup_symbol elf32_mips_fixup_symbol
#define elf_backend_grok_prstatus elf32_mips_grok_prstatus
#define elf_backend_grok_psinfo elf32_mips_grok_psinfo
#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
#define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
#define elf_backend_want_dynrelro 1
#define elf_backend_may_use_rel_p 1
#define elf_backend_may_use_rela_p 0
#define elf_backend_default_use_rela_p 0
#define elf_backend_sign_extend_vma TRUE
#define elf_backend_plt_readonly 1
#define elf_backend_discard_info _bfd_mips_elf_discard_info
#define elf_backend_ignore_discarded_relocs \
_bfd_mips_elf_ignore_discarded_relocs
#define elf_backend_write_section _bfd_mips_elf_write_section
#define elf_backend_mips_irix_compat elf32_mips_irix_compat
#define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto
#define elf_backend_sort_relocs_p _bfd_mips_elf_sort_relocs_p
#define bfd_elf32_bfd_is_local_label_name \
mips_elf_is_local_label_name
#define bfd_elf32_bfd_is_target_special_symbol \
_bfd_mips_elf_is_target_special_symbol
#define bfd_elf32_get_synthetic_symtab _bfd_mips_elf_get_synthetic_symtab
#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
#define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info
#define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
#define bfd_elf32_bfd_get_relocated_section_contents \
_bfd_elf_mips_get_relocated_section_contents
#define bfd_elf32_bfd_link_hash_table_create \
_bfd_mips_elf_link_hash_table_create
#define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
#define bfd_elf32_bfd_merge_private_bfd_data \
_bfd_mips_elf_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data \
_bfd_mips_elf_print_private_bfd_data
#define bfd_elf32_bfd_relax_section _bfd_mips_elf_relax_section
#define bfd_elf32_mkobject _bfd_mips_elf_mkobject
/* Support for SGI-ish mips targets. */
#define TARGET_LITTLE_SYM mips_elf32_le_vec
#define TARGET_LITTLE_NAME "elf32-littlemips"
#define TARGET_BIG_SYM mips_elf32_be_vec
#define TARGET_BIG_NAME "elf32-bigmips"
/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
a value of 0x1000, and we are compatible. */
#define ELF_MAXPAGESIZE 0x1000
#define ELF_COMMONPAGESIZE 0x1000
#include "elf32-target.h"
/* Support for traditional mips targets. */
#undef TARGET_LITTLE_SYM
#undef TARGET_LITTLE_NAME
#undef TARGET_BIG_SYM
#undef TARGET_BIG_NAME
#undef ELF_MAXPAGESIZE
#undef ELF_COMMONPAGESIZE
#define TARGET_LITTLE_SYM mips_elf32_trad_le_vec
#define TARGET_LITTLE_NAME "elf32-tradlittlemips"
#define TARGET_BIG_SYM mips_elf32_trad_be_vec
#define TARGET_BIG_NAME "elf32-tradbigmips"
/* The MIPS ABI says at Page 5-1:
Virtual addresses and file offsets for MIPS segments are congruent
modulo 64 KByte (0x10000) or larger powers of 2. Because 64 KBytes
is the maximum page size, the files are suitable for paging
regardless of physical page size. */
#define ELF_MAXPAGESIZE 0x10000
#define ELF_COMMONPAGESIZE 0x1000
#define elf32_bed elf32_tradbed
#undef elf_backend_write_core_note
#define elf_backend_write_core_note elf32_mips_write_core_note
/* Include the target file again for this target. */
#include "elf32-target.h"
/* FreeBSD support. */
#undef TARGET_LITTLE_SYM
#undef TARGET_LITTLE_NAME
#undef TARGET_BIG_SYM
#undef TARGET_BIG_NAME
#define TARGET_LITTLE_SYM mips_elf32_tradfbsd_le_vec
#define TARGET_LITTLE_NAME "elf32-tradlittlemips-freebsd"
#define TARGET_BIG_SYM mips_elf32_tradfbsd_be_vec
#define TARGET_BIG_NAME "elf32-tradbigmips-freebsd"
#undef ELF_OSABI
#define ELF_OSABI ELFOSABI_FREEBSD
#undef elf32_bed
#define elf32_bed elf32_fbsd_tradbed
#undef elf_backend_write_core_note
#include "elf32-target.h"
/* Implement elf_backend_final_write_processing for VxWorks. */
static void
mips_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
{
_bfd_mips_elf_final_write_processing (abfd, linker);
elf_vxworks_final_write_processing (abfd, linker);
}
#undef TARGET_LITTLE_SYM
#undef TARGET_LITTLE_NAME
#undef TARGET_BIG_SYM
#undef TARGET_BIG_NAME
#undef ELF_MAXPAGESIZE
#undef ELF_COMMONPAGESIZE
#define TARGET_LITTLE_SYM mips_elf32_vxworks_le_vec
#define TARGET_LITTLE_NAME "elf32-littlemips-vxworks"
#define TARGET_BIG_SYM mips_elf32_vxworks_be_vec
#define TARGET_BIG_NAME "elf32-bigmips-vxworks"
#undef ELF_OSABI
#undef elf32_bed
#define elf32_bed elf32_mips_vxworks_bed
#define ELF_MAXPAGESIZE 0x1000
#define ELF_COMMONPAGESIZE 0x1000
#undef elf_backend_want_got_plt
#define elf_backend_want_got_plt 1
#undef elf_backend_want_plt_sym
#define elf_backend_want_plt_sym 1
#undef elf_backend_may_use_rel_p
#define elf_backend_may_use_rel_p 0
#undef elf_backend_may_use_rela_p
#define elf_backend_may_use_rela_p 1
#undef elf_backend_default_use_rela_p
#define elf_backend_default_use_rela_p 1
#undef elf_backend_got_header_size
#define elf_backend_got_header_size (4 * 3)
#undef elf_backend_dtrel_excludes_plt
#define elf_backend_dtrel_excludes_plt 1
#undef elf_backend_finish_dynamic_symbol
#define elf_backend_finish_dynamic_symbol \
_bfd_mips_vxworks_finish_dynamic_symbol
#undef bfd_elf32_bfd_link_hash_table_create
#define bfd_elf32_bfd_link_hash_table_create \
_bfd_mips_vxworks_link_hash_table_create
#undef elf_backend_add_symbol_hook
#define elf_backend_add_symbol_hook \
elf_vxworks_add_symbol_hook
#undef elf_backend_link_output_symbol_hook
#define elf_backend_link_output_symbol_hook \
elf_vxworks_link_output_symbol_hook
#undef elf_backend_emit_relocs
#define elf_backend_emit_relocs \
elf_vxworks_emit_relocs
#undef elf_backend_final_write_processing
#define elf_backend_final_write_processing \
mips_vxworks_final_write_processing
#undef elf_backend_additional_program_headers
#undef elf_backend_modify_segment_map
#undef elf_backend_symbol_processing
/* NOTE: elf_backend_rela_normal is not defined for MIPS. */
#undef bfd_elf32_get_synthetic_symtab
#include "elf32-target.h"
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