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/* PowerPC-specific support for 32-bit ELF
   Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   Written by Ian Lance Taylor, Cygnus Support.
 
   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 is based on a preliminary PowerPC ELF ABI.  The
   information may not match the final PowerPC ELF ABI.  It includes
   suggestions from the in-progress Embedded PowerPC ABI, and that
   information may also not match.  */
 
#include "sysdep.h"
#include <stdarg.h>
#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/ppc.h"
#include "elf32-ppc.h"
#include "elf-vxworks.h"
 
/* RELA relocations are used here.  */
 
static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type ppc_elf_unhandled_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 
/* Branch prediction bit for branch taken relocs.  */
#define BRANCH_PREDICT_BIT 0x200000
/* Mask to set RA in memory instructions.  */
#define RA_REGISTER_MASK 0x001f0000
/* Value to shift register by to insert RA.  */
#define RA_REGISTER_SHIFT 16
 
/* The name of the dynamic interpreter.  This is put in the .interp
   section.  */
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
 
/* For old-style PLT.  */
/* The number of single-slot PLT entries (the rest use two slots).  */
#define PLT_NUM_SINGLE_ENTRIES 8192
 
/* For new-style .glink and .plt.  */
#define GLINK_PLTRESOLVE 16*4
#define GLINK_ENTRY_SIZE 4*4
#define TLS_GET_ADDR_GLINK_SIZE 12*4
 
/* VxWorks uses its own plt layout, filled in by the static linker.  */
 
/* The standard VxWorks PLT entry.  */
#define VXWORKS_PLT_ENTRY_SIZE 32
static const bfd_vma ppc_elf_vxworks_plt_entry
    [VXWORKS_PLT_ENTRY_SIZE / 4] =
  {
    0x3d800000, /* lis     r12,0                 */
    0x818c0000, /* lwz     r12,0(r12)            */
    0x7d8903a6, /* mtctr   r12                   */
    0x4e800420, /* bctr                          */
    0x39600000, /* li      r11,0                 */
    0x48000000, /* b       14 <.PLT0resolve+0x4> */
    0x60000000, /* nop                           */
    0x60000000, /* nop                           */
  };
static const bfd_vma ppc_elf_vxworks_pic_plt_entry
    [VXWORKS_PLT_ENTRY_SIZE / 4] =
  {
    0x3d9e0000, /* addis r12,r30,0 */
    0x818c0000, /* lwz	 r12,0(r12) */
    0x7d8903a6, /* mtctr r12 */
    0x4e800420, /* bctr */
    0x39600000, /* li	 r11,0 */
    0x48000000, /* b	 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
    0x60000000, /* nop */
    0x60000000, /* nop */
  };
 
/* The initial VxWorks PLT entry.  */
#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
static const bfd_vma ppc_elf_vxworks_plt0_entry
    [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
  {
    0x3d800000, /* lis     r12,0        */
    0x398c0000, /* addi    r12,r12,0    */
    0x800c0008, /* lwz     r0,8(r12)    */
    0x7c0903a6, /* mtctr   r0           */
    0x818c0004, /* lwz     r12,4(r12)   */
    0x4e800420, /* bctr                 */
    0x60000000, /* nop                  */
    0x60000000, /* nop                  */
  };
static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
    [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
  {
    0x819e0008, /* lwz	 r12,8(r30) */
    0x7d8903a6, /* mtctr r12        */
    0x819e0004, /* lwz	 r12,4(r30) */
    0x4e800420, /* bctr             */
    0x60000000, /* nop              */
    0x60000000, /* nop              */
    0x60000000, /* nop              */
    0x60000000, /* nop              */
  };
 
/* For executables, we have some additional relocations in
   .rela.plt.unloaded, for the kernel loader.  */
 
/* The number of non-JMP_SLOT relocations per PLT0 slot. */
#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
/* The number of relocations in the PLTResolve slot. */
#define VXWORKS_PLTRESOLVE_RELOCS 2
/* The number of relocations in the PLTResolve slot when when creating
   a shared library. */
#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
 
/* Some instructions.  */
#define ADDIS_11_11	0x3d6b0000
#define ADDIS_11_30	0x3d7e0000
#define ADDIS_12_12	0x3d8c0000
#define ADDI_11_11	0x396b0000
#define ADD_0_11_11	0x7c0b5a14
#define ADD_3_12_2	0x7c6c1214
#define ADD_11_0_11	0x7d605a14
#define B		0x48000000
#define BCL_20_31	0x429f0005
#define BCTR		0x4e800420
#define BEQLR		0x4d820020
#define CMPWI_11_0	0x2c0b0000
#define LIS_11		0x3d600000
#define LIS_12		0x3d800000
#define LWZU_0_12	0x840c0000
#define LWZ_0_12	0x800c0000
#define LWZ_11_3	0x81630000
#define LWZ_11_11	0x816b0000
#define LWZ_11_30	0x817e0000
#define LWZ_12_3	0x81830000
#define LWZ_12_12	0x818c0000
#define MR_0_3		0x7c601b78
#define MR_3_0		0x7c030378
#define MFLR_0		0x7c0802a6
#define MFLR_12		0x7d8802a6
#define MTCTR_0		0x7c0903a6
#define MTCTR_11	0x7d6903a6
#define MTLR_0		0x7c0803a6
#define NOP		0x60000000
#define SUB_11_11_12	0x7d6c5850
 
/* Offset of tp and dtp pointers from start of TLS block.  */
#define TP_OFFSET	0x7000
#define DTP_OFFSET	0x8000
 
/* The value of a defined global symbol.  */
#define SYM_VAL(SYM) \
  ((SYM)->root.u.def.section->output_section->vma	\
   + (SYM)->root.u.def.section->output_offset		\
   + (SYM)->root.u.def.value)

static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
 
static reloc_howto_type ppc_elf_howto_raw[] = {
  /* This reloc does nothing.  */
  HOWTO (R_PPC_NONE,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_NONE",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* A standard 32 bit relocation.  */
  HOWTO (R_PPC_ADDR32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_ADDR32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* An absolute 26 bit branch; the lower two bits must be zero.
     FIXME: we don't check that, we just clear them.  */
  HOWTO (R_PPC_ADDR24,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 26,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_ADDR24",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x3fffffc,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* A standard 16 bit relocation.  */
  HOWTO (R_PPC_ADDR16,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_ADDR16",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* A 16 bit relocation without overflow.  */
  HOWTO (R_PPC_ADDR16_LO,	/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_ADDR16_LO",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* The high order 16 bits of an address.  */
  HOWTO (R_PPC_ADDR16_HI,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_ADDR16_HI",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* The high order 16 bits of an address, plus 1 if the contents of
     the low 16 bits, treated as a signed number, is negative.  */
  HOWTO (R_PPC_ADDR16_HA,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc_elf_addr16_ha_reloc, /* special_function */
	 "R_PPC_ADDR16_HA",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* An absolute 16 bit branch; the lower two bits must be zero.
     FIXME: we don't check that, we just clear them.  */
  HOWTO (R_PPC_ADDR14,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_ADDR14",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xfffc,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* An absolute 16 bit branch, for which bit 10 should be set to
     indicate that the branch is expected to be taken.	The lower two
     bits must be zero.  */
  HOWTO (R_PPC_ADDR14_BRTAKEN,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_ADDR14_BRTAKEN",/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xfffc,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* An absolute 16 bit branch, for which bit 10 should be set to
     indicate that the branch is not expected to be taken.  The lower
     two bits must be zero.  */
  HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_ADDR14_BRNTAKEN",/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xfffc,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* A relative 26 bit branch; the lower two bits must be zero.  */
  HOWTO (R_PPC_REL24,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 26,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_REL24",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x3fffffc,		/* dst_mask */
	 TRUE),			/* pcrel_offset */
 
  /* A relative 16 bit branch; the lower two bits must be zero.  */
  HOWTO (R_PPC_REL14,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_REL14",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xfffc,		/* dst_mask */
	 TRUE),			/* pcrel_offset */
 
  /* A relative 16 bit branch.  Bit 10 should be set to indicate that
     the branch is expected to be taken.  The lower two bits must be
     zero.  */
  HOWTO (R_PPC_REL14_BRTAKEN,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_REL14_BRTAKEN",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xfffc,		/* dst_mask */
	 TRUE),			/* pcrel_offset */
 
  /* A relative 16 bit branch.  Bit 10 should be set to indicate that
     the branch is not expected to be taken.  The lower two bits must
     be zero.  */
  HOWTO (R_PPC_REL14_BRNTAKEN,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_REL14_BRNTAKEN",/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xfffc,		/* dst_mask */
	 TRUE),			/* pcrel_offset */
 
  /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
     symbol.  */
  HOWTO (R_PPC_GOT16,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_GOT16",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
     the symbol.  */
  HOWTO (R_PPC_GOT16_LO,	/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_GOT16_LO",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
     the symbol.  */
  HOWTO (R_PPC_GOT16_HI,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_GOT16_HI",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		 /* pcrel_offset */
 
  /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
     the symbol.  */
  HOWTO (R_PPC_GOT16_HA,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 ppc_elf_addr16_ha_reloc, /* special_function */
	 "R_PPC_GOT16_HA",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Like R_PPC_REL24, but referring to the procedure linkage table
     entry for the symbol.  */
  HOWTO (R_PPC_PLTREL24,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 26,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,  /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_PLTREL24",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x3fffffc,		/* dst_mask */
	 TRUE),			/* pcrel_offset */
 
  /* This is used only by the dynamic linker.  The symbol should exist
     both in the object being run and in some shared library.  The
     dynamic linker copies the data addressed by the symbol from the
     shared library into the object, because the object being
     run has to have the data at some particular address.  */
  HOWTO (R_PPC_COPY,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	 /* special_function */
	 "R_PPC_COPY",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Like R_PPC_ADDR32, but used when setting global offset table
     entries.  */
  HOWTO (R_PPC_GLOB_DAT,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	 /* special_function */
	 "R_PPC_GLOB_DAT",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Marks a procedure linkage table entry for a symbol.  */
  HOWTO (R_PPC_JMP_SLOT,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	 /* special_function */
	 "R_PPC_JMP_SLOT",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Used only by the dynamic linker.  When the object is run, this
     longword is set to the load address of the object, plus the
     addend.  */
  HOWTO (R_PPC_RELATIVE,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	 /* special_function */
	 "R_PPC_RELATIVE",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Like R_PPC_REL24, but uses the value of the symbol within the
     object rather than the final value.  Normally used for
     _GLOBAL_OFFSET_TABLE_.  */
  HOWTO (R_PPC_LOCAL24PC,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 26,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_LOCAL24PC",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x3fffffc,		/* dst_mask */
	 TRUE),			/* pcrel_offset */
 
  /* Like R_PPC_ADDR32, but may be unaligned.  */
  HOWTO (R_PPC_UADDR32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_UADDR32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Like R_PPC_ADDR16, but may be unaligned.  */
  HOWTO (R_PPC_UADDR16,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_UADDR16",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* 32-bit PC relative */
  HOWTO (R_PPC_REL32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_REL32",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */
 
  /* 32-bit relocation to the symbol's procedure linkage table.
     FIXME: not supported.  */
  HOWTO (R_PPC_PLT32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_PLT32",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* 32-bit PC relative relocation to the symbol's procedure linkage table.
     FIXME: not supported.  */
  HOWTO (R_PPC_PLTREL32,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_PLTREL32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 TRUE),			/* pcrel_offset */
 
  /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
     the symbol.  */
  HOWTO (R_PPC_PLT16_LO,	/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_PLT16_LO",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
     the symbol.  */
  HOWTO (R_PPC_PLT16_HI,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_PLT16_HI",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		 /* pcrel_offset */
 
  /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
     the symbol.  */
  HOWTO (R_PPC_PLT16_HA,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 ppc_elf_addr16_ha_reloc, /* special_function */
	 "R_PPC_PLT16_HA",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
     small data items.  */
  HOWTO (R_PPC_SDAREL16,	/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_SDAREL16",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* 16-bit section relative relocation.  */
  HOWTO (R_PPC_SECTOFF,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_SECTOFF",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* 16-bit lower half section relative relocation.  */
  HOWTO (R_PPC_SECTOFF_LO,	  /* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_SECTOFF_LO",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* 16-bit upper half section relative relocation.  */
  HOWTO (R_PPC_SECTOFF_HI,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_SECTOFF_HI",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		 /* pcrel_offset */
 
  /* 16-bit upper half adjusted section relative relocation.  */
  HOWTO (R_PPC_SECTOFF_HA,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 ppc_elf_addr16_ha_reloc, /* special_function */
	 "R_PPC_SECTOFF_HA",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Marker relocs for TLS.  */
  HOWTO (R_PPC_TLS,
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC_TLS",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  HOWTO (R_PPC_TLSGD,
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc, /* special_function */
	 "R_PPC_TLSGD",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  HOWTO (R_PPC_TLSLD,
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc, /* special_function */
	 "R_PPC_TLSLD",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Computes the load module index of the load module that contains the
     definition of its TLS sym.  */
  HOWTO (R_PPC_DTPMOD32,
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc_elf_unhandled_reloc, /* special_function */
	 "R_PPC_DTPMOD32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Computes a dtv-relative displacement, the difference between the value
     of sym+add and the base address of the thread-local storage block that
     contains the definition of sym, minus 0x8000.  */
  HOWTO (R_PPC_DTPREL32,
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc_elf_unhandled_reloc, /* special_function */
	 "R_PPC_DTPREL32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* A 16 bit dtprel reloc.  */
  HOWTO (R_PPC_DTPREL16,
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 ppc_elf_unhandled_reloc, /* special_function */
	 "R_PPC_DTPREL16",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */
 
  /* Like DTPREL16, but no overflow.  */
  HOWTO (R_PPC_DTPREL16_LO,
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc_elf_unhandled_reloc, /* special_fun