elf64-ppc.c

/* PowerPC64-specific support for 64-bit ELF.
   Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
   2009, 2010, 2011, 2012 Free Software Foundation, Inc.
   Written by Linus Nordberg, Swox AB <info@swox.com>,
   based on elf32-ppc.c by Ian Lance Taylor.
   Largely rewritten by Alan Modra.

   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.  */


/* The 64-bit PowerPC ELF ABI may be found at
   http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
   http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html  */

#include "sysdep.h"
#include <stdarg.h>
#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/ppc64.h"
#include "elf64-ppc.h"
#include "dwarf2.h"

static bfd_reloc_status_type ppc64_elf_ha_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type ppc64_elf_branch_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type ppc64_elf_brtaken_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type ppc64_elf_sectoff_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type ppc64_elf_toc_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type ppc64_elf_toc64_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_reloc_status_type ppc64_elf_unhandled_reloc
  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_vma opd_entry_value
  (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);

#define TARGET_LITTLE_SYM	bfd_elf64_powerpcle_vec
#define TARGET_LITTLE_NAME	"elf64-powerpcle"
#define TARGET_BIG_SYM		bfd_elf64_powerpc_vec
#define TARGET_BIG_NAME		"elf64-powerpc"
#define ELF_ARCH		bfd_arch_powerpc
#define ELF_TARGET_ID		PPC64_ELF_DATA
#define ELF_MACHINE_CODE	EM_PPC64
#define ELF_MAXPAGESIZE		0x10000
#define ELF_COMMONPAGESIZE	0x1000
#define elf_info_to_howto	ppc64_elf_info_to_howto

#define elf_backend_want_got_sym 0
#define elf_backend_want_plt_sym 0
#define elf_backend_plt_alignment 3
#define elf_backend_plt_not_loaded 1
#define elf_backend_got_header_size 8
#define elf_backend_can_gc_sections 1
#define elf_backend_can_refcount 1
#define elf_backend_rela_normal 1
#define elf_backend_default_execstack 0

#define bfd_elf64_mkobject		      ppc64_elf_mkobject
#define bfd_elf64_bfd_reloc_type_lookup	      ppc64_elf_reloc_type_lookup
#define bfd_elf64_bfd_reloc_name_lookup	      ppc64_elf_reloc_name_lookup
#define bfd_elf64_bfd_merge_private_bfd_data  ppc64_elf_merge_private_bfd_data
#define bfd_elf64_bfd_print_private_bfd_data  ppc64_elf_print_private_bfd_data
#define bfd_elf64_new_section_hook	      ppc64_elf_new_section_hook
#define bfd_elf64_bfd_link_hash_table_create  ppc64_elf_link_hash_table_create
#define bfd_elf64_bfd_link_hash_table_free    ppc64_elf_link_hash_table_free
#define bfd_elf64_get_synthetic_symtab	      ppc64_elf_get_synthetic_symtab
#define bfd_elf64_bfd_link_just_syms	      ppc64_elf_link_just_syms

#define elf_backend_object_p		      ppc64_elf_object_p
#define elf_backend_grok_prstatus	      ppc64_elf_grok_prstatus
#define elf_backend_grok_psinfo		      ppc64_elf_grok_psinfo
#define elf_backend_write_core_note	      ppc64_elf_write_core_note
#define elf_backend_create_dynamic_sections   ppc64_elf_create_dynamic_sections
#define elf_backend_copy_indirect_symbol      ppc64_elf_copy_indirect_symbol
#define elf_backend_add_symbol_hook	      ppc64_elf_add_symbol_hook
#define elf_backend_check_directives	      ppc64_elf_process_dot_syms
#define elf_backend_notice_as_needed	      ppc64_elf_notice_as_needed
#define elf_backend_archive_symbol_lookup     ppc64_elf_archive_symbol_lookup
#define elf_backend_check_relocs	      ppc64_elf_check_relocs
#define elf_backend_gc_keep		      ppc64_elf_gc_keep
#define elf_backend_gc_mark_dynamic_ref       ppc64_elf_gc_mark_dynamic_ref
#define elf_backend_gc_mark_hook	      ppc64_elf_gc_mark_hook
#define elf_backend_gc_sweep_hook	      ppc64_elf_gc_sweep_hook
#define elf_backend_adjust_dynamic_symbol     ppc64_elf_adjust_dynamic_symbol
#define elf_backend_hide_symbol		      ppc64_elf_hide_symbol
#define elf_backend_maybe_function_sym	      ppc64_elf_maybe_function_sym
#define elf_backend_always_size_sections      ppc64_elf_func_desc_adjust
#define elf_backend_size_dynamic_sections     ppc64_elf_size_dynamic_sections
#define elf_backend_hash_symbol		      ppc64_elf_hash_symbol
#define elf_backend_init_index_section	      _bfd_elf_init_2_index_sections
#define elf_backend_action_discarded	      ppc64_elf_action_discarded
#define elf_backend_relocate_section	      ppc64_elf_relocate_section
#define elf_backend_finish_dynamic_symbol     ppc64_elf_finish_dynamic_symbol
#define elf_backend_reloc_type_class	      ppc64_elf_reloc_type_class
#define elf_backend_finish_dynamic_sections   ppc64_elf_finish_dynamic_sections
#define elf_backend_link_output_symbol_hook   ppc64_elf_output_symbol_hook
#define elf_backend_special_sections	      ppc64_elf_special_sections
#define elf_backend_post_process_headers      _bfd_elf_set_osabi
#define elf_backend_merge_symbol_attribute    ppc64_elf_merge_symbol_attribute

/* The name of the dynamic interpreter.  This is put in the .interp
   section.  */
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"

/* The size in bytes of an entry in the procedure linkage table.  */
#define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)

/* The initial size of the plt reserved for the dynamic linker.  */
#define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)

/* Offsets to some stack save slots.  */
#define STK_LR 16
#define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
/* This one is dodgy.  ABIv2 does not have a linker word, so use the
   CR save slot.  Used only by optimised __tls_get_addr call stub,
   relying on __tls_get_addr_opt not saving CR..  */
#define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)

/* TOC base pointers offset from start of TOC.  */
#define TOC_BASE_OFF	0x8000

/* Offset of tp and dtp pointers from start of TLS block.  */
#define TP_OFFSET	0x7000
#define DTP_OFFSET	0x8000

/* .plt call stub instructions.  The normal stub is like this, but
   sometimes the .plt entry crosses a 64k boundary and we need to
   insert an addi to adjust r11.  */
#define STD_R2_0R1	0xf8410000	/* std	 %r2,0+40(%r1)	     */
#define ADDIS_R11_R2	0x3d620000	/* addis %r11,%r2,xxx@ha     */
#define LD_R12_0R11	0xe98b0000	/* ld	 %r12,xxx+0@l(%r11)  */
#define MTCTR_R12	0x7d8903a6	/* mtctr %r12		     */
#define LD_R2_0R11	0xe84b0000	/* ld	 %r2,xxx+8@l(%r11)   */
#define LD_R11_0R11	0xe96b0000	/* ld	 %r11,xxx+16@l(%r11) */
#define BCTR		0x4e800420	/* bctr			     */

#define ADDI_R11_R11	0x396b0000	/* addi %r11,%r11,off@l  */
#define ADDIS_R2_R2	0x3c420000	/* addis %r2,%r2,off@ha  */
#define ADDI_R2_R2	0x38420000	/* addi  %r2,%r2,off@l   */

#define XOR_R2_R12_R12	0x7d826278	/* xor   %r2,%r12,%r12   */
#define ADD_R11_R11_R2	0x7d6b1214	/* add   %r11,%r11,%r2   */
#define XOR_R11_R12_R12	0x7d8b6278	/* xor   %r11,%r12,%r12  */
#define ADD_R2_R2_R11	0x7c425a14	/* add   %r2,%r2,%r11    */
#define CMPLDI_R2_0	0x28220000	/* cmpldi %r2,0          */
#define BNECTR		0x4ca20420	/* bnectr+               */
#define BNECTR_P4	0x4ce20420	/* bnectr+               */

#define LD_R12_0R2	0xe9820000	/* ld	 %r12,xxx+0(%r2) */
#define LD_R11_0R2	0xe9620000	/* ld	 %r11,xxx+0(%r2) */
#define LD_R2_0R2	0xe8420000	/* ld	 %r2,xxx+0(%r2)  */

#define LD_R2_0R1	0xe8410000	/* ld    %r2,0(%r1)      */

#define ADDIS_R12_R12	0x3d8c0000	/* addis %r12,%r12,xxx@ha */
#define LD_R12_0R12	0xe98c0000	/* ld    %r12,xxx@l(%r12) */

/* glink call stub instructions.  We enter with the index in R0.  */
#define GLINK_CALL_STUB_SIZE (16*4)
					/* 0:				*/
					/*  .quad plt0-1f		*/
					/* __glink:			*/
#define MFLR_R12	0x7d8802a6	/*  mflr %12			*/
#define BCL_20_31	0x429f0005	/*  bcl 20,31,1f		*/
					/* 1:				*/
#define MFLR_R11	0x7d6802a6	/*  mflr %11			*/
					/*  ld %2,(0b-1b)(%11)		*/
#define MTLR_R12	0x7d8803a6	/*  mtlr %12			*/
#define ADD_R11_R2_R11	0x7d625a14	/*  add %11,%2,%11		*/
					/*  ld %12,0(%11)		*/
					/*  ld %2,8(%11)		*/
					/*  mtctr %12			*/
					/*  ld %11,16(%11)		*/
					/*  bctr			*/
#define MFLR_R0		0x7c0802a6	/*  mflr %r0			*/
#define MTLR_R0		0x7c0803a6	/*  mtlr %r0			*/
#define SUB_R12_R12_R11	0x7d8b6050	/*  subf %r12,%r11,%r12		*/
#define ADDI_R0_R12	0x380c0000	/*  addi %r0,%r12,0		*/
#define SRDI_R0_R0_2	0x7800f082	/*  rldicl %r0,%r0,62,2		*/

/* Pad with this.  */
#define NOP		0x60000000

/* Some other nops.  */
#define CROR_151515	0x4def7b82
#define CROR_313131	0x4ffffb82

/* .glink entries for the first 32k functions are two instructions.  */
#define LI_R0_0		0x38000000	/* li    %r0,0		*/
#define B_DOT		0x48000000	/* b     .		*/

/* After that, we need two instructions to load the index, followed by
   a branch.  */
#define LIS_R0_0	0x3c000000	/* lis   %r0,0		*/
#define ORI_R0_R0_0	0x60000000	/* ori	 %r0,%r0,0	*/

/* Instructions used by the save and restore reg functions.  */
#define STD_R0_0R1	0xf8010000	/* std   %r0,0(%r1)	*/
#define STD_R0_0R12	0xf80c0000	/* std   %r0,0(%r12)	*/
#define LD_R0_0R1	0xe8010000	/* ld    %r0,0(%r1)	*/
#define LD_R0_0R12	0xe80c0000	/* ld    %r0,0(%r12)	*/
#define STFD_FR0_0R1	0xd8010000	/* stfd  %fr0,0(%r1)	*/
#define LFD_FR0_0R1	0xc8010000	/* lfd   %fr0,0(%r1)	*/
#define LI_R12_0	0x39800000	/* li    %r12,0		*/
#define STVX_VR0_R12_R0	0x7c0c01ce	/* stvx  %v0,%r12,%r0	*/
#define LVX_VR0_R12_R0	0x7c0c00ce	/* lvx   %v0,%r12,%r0	*/
#define MTLR_R0		0x7c0803a6	/* mtlr  %r0		*/
#define BLR		0x4e800020	/* blr			*/

/* Since .opd is an array of descriptors and each entry will end up
   with identical R_PPC64_RELATIVE relocs, there is really no need to
   propagate .opd relocs;  The dynamic linker should be taught to
   relocate .opd without reloc entries.  */
#ifndef NO_OPD_RELOCS
#define NO_OPD_RELOCS 0
#endif

#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)

/* Relocation HOWTO's.  */
static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];

static reloc_howto_type ppc64_elf_howto_raw[] = {
  /* This reloc does nothing.  */
  HOWTO (R_PPC64_NONE,		/* 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_elf_generic_reloc,	/* special_function */
	 "R_PPC64_NONE",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* A standard 32 bit relocation.  */
  HOWTO (R_PPC64_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_PPC64_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_PPC64_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_PPC64_ADDR24",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x03fffffc,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* A standard 16 bit relocation.  */
  HOWTO (R_PPC64_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_PPC64_ADDR16",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* A 16 bit relocation without overflow.  */
  HOWTO (R_PPC64_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_PPC64_ADDR16_LO",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Bits 16-31 of an address.  */
  HOWTO (R_PPC64_ADDR16_HI,	/* type */
	 16,			/* 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_PPC64_ADDR16_HI",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Bits 16-31 of an address, plus 1 if the contents of the low 16
     bits, treated as a signed number, is negative.  */
  HOWTO (R_PPC64_ADDR16_HA,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 ppc64_elf_ha_reloc,	/* special_function */
	 "R_PPC64_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_PPC64_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 */
	 ppc64_elf_branch_reloc, /* special_function */
	 "R_PPC64_ADDR14",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000fffc,		/* 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_PPC64_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 */
	 ppc64_elf_brtaken_reloc, /* special_function */
	 "R_PPC64_ADDR14_BRTAKEN",/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000fffc,		/* 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_PPC64_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 */
	 ppc64_elf_brtaken_reloc, /* special_function */
	 "R_PPC64_ADDR14_BRNTAKEN",/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000fffc,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* A relative 26 bit branch; the lower two bits must be zero.  */
  HOWTO (R_PPC64_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 */
	 ppc64_elf_branch_reloc, /* special_function */
	 "R_PPC64_REL24",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x03fffffc,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* A relative 16 bit branch; the lower two bits must be zero.  */
  HOWTO (R_PPC64_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 */
	 ppc64_elf_branch_reloc, /* special_function */
	 "R_PPC64_REL14",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000fffc,		/* 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_PPC64_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 */
	 ppc64_elf_brtaken_reloc, /* special_function */
	 "R_PPC64_REL14_BRTAKEN", /* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000fffc,		/* 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_PPC64_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 */
	 ppc64_elf_brtaken_reloc, /* special_function */
	 "R_PPC64_REL14_BRNTAKEN",/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000fffc,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
     symbol.  */
  HOWTO (R_PPC64_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 */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_GOT16",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
     the symbol.  */
  HOWTO (R_PPC64_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 */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_GOT16_LO",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
     the symbol.  */
  HOWTO (R_PPC64_GOT16_HI,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_GOT16_HI",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
     the symbol.  */
  HOWTO (R_PPC64_GOT16_HA,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_GOT16_HA",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* 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_PPC64_COPY,		/* type */
	 0,			/* rightshift */
	 0,			/* this one is variable size */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_COPY",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like R_PPC64_ADDR64, but used when setting global offset table
     entries.  */
  HOWTO (R_PPC64_GLOB_DAT,	/* type */
	 0,			/* rightshift */
	 4,			/* size (0=byte, 1=short, 2=long, 4=64 bits) */
	 64,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc64_elf_unhandled_reloc,  /* special_function */
	 "R_PPC64_GLOB_DAT",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 ONES (64),		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Created by the link editor.  Marks a procedure linkage table
     entry for a symbol.  */
  HOWTO (R_PPC64_JMP_SLOT,	/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_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
     doubleword64 is set to the load address of the object, plus the
     addend.  */
  HOWTO (R_PPC64_RELATIVE,	/* type */
	 0,			/* rightshift */
	 4,			/* size (0=byte, 1=short, 2=long, 4=64 bits) */
	 64,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC64_RELATIVE",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 ONES (64),		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like R_PPC64_ADDR32, but may be unaligned.  */
  HOWTO (R_PPC64_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_PPC64_UADDR32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like R_PPC64_ADDR16, but may be unaligned.  */
  HOWTO (R_PPC64_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_PPC64_UADDR16",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 32-bit PC relative.  */
  HOWTO (R_PPC64_REL32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 /* FIXME: Verify.  Was complain_overflow_bitfield.  */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC64_REL32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* 32-bit relocation to the symbol's procedure linkage table.  */
  HOWTO (R_PPC64_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 */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_PLT32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 32-bit PC relative relocation to the symbol's procedure linkage table.
     FIXME: R_PPC64_PLTREL32 not supported.  */
  HOWTO (R_PPC64_PLTREL32,	/* 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_elf_generic_reloc,	/* special_function */
	 "R_PPC64_PLTREL32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
     the symbol.  */
  HOWTO (R_PPC64_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 */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_PLT16_LO",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
     the symbol.  */
  HOWTO (R_PPC64_PLT16_HI,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_PLT16_HI",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
     the symbol.  */
  HOWTO (R_PPC64_PLT16_HA,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_PLT16_HA",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 16-bit section relative relocation.  */
  HOWTO (R_PPC64_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 */
	 ppc64_elf_sectoff_reloc, /* special_function */
	 "R_PPC64_SECTOFF",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like R_PPC64_SECTOFF, but no overflow warning.  */
  HOWTO (R_PPC64_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 */
	 ppc64_elf_sectoff_reloc, /* special_function */
	 "R_PPC64_SECTOFF_LO",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 16-bit upper half section relative relocation.  */
  HOWTO (R_PPC64_SECTOFF_HI,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 ppc64_elf_sectoff_reloc, /* special_function */
	 "R_PPC64_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_PPC64_SECTOFF_HA,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 ppc64_elf_sectoff_ha_reloc, /* special_function */
	 "R_PPC64_SECTOFF_HA",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like R_PPC64_REL24 without touching the two least significant bits.  */
  HOWTO (R_PPC64_REL30,		/* type */
	 2,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 30,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc, /* special_function */
	 "R_PPC64_REL30",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xfffffffc,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI.  */

  /* A standard 64-bit relocation.  */
  HOWTO (R_PPC64_ADDR64,	/* type */
	 0,			/* rightshift */
	 4,			/* size (0=byte, 1=short, 2=long, 4=64 bits) */
	 64,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC64_ADDR64",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 ONES (64),		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* The bits 32-47 of an address.  */
  HOWTO (R_PPC64_ADDR16_HIGHER,	/* type */
	 32,			/* 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_PPC64_ADDR16_HIGHER", /* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* The bits 32-47 of an address, plus 1 if the contents of the low
     16 bits, treated as a signed number, is negative.  */
  HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
	 32,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc64_elf_ha_reloc,	/* special_function */
	 "R_PPC64_ADDR16_HIGHERA", /* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* The bits 48-63 of an address.  */
  HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
	 48,			/* 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_PPC64_ADDR16_HIGHEST", /* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* The bits 48-63 of an address, plus 1 if the contents of the low
     16 bits, treated as a signed number, is negative.  */
  HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
	 48,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc64_elf_ha_reloc,	/* special_function */
	 "R_PPC64_ADDR16_HIGHESTA", /* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Like ADDR64, but may be unaligned.  */
  HOWTO (R_PPC64_UADDR64,	/* type */
	 0,			/* rightshift */
	 4,			/* size (0=byte, 1=short, 2=long, 4=64 bits) */
	 64,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC64_UADDR64",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 ONES (64),		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 64-bit relative relocation.  */
  HOWTO (R_PPC64_REL64,		/* type */
	 0,			/* rightshift */
	 4,			/* size (0=byte, 1=short, 2=long, 4=64 bits) */
	 64,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_PPC64_REL64",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 ONES (64),		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* 64-bit relocation to the symbol's procedure linkage table.  */
  HOWTO (R_PPC64_PLT64,		/* type */
	 0,			/* rightshift */
	 4,			/* size (0=byte, 1=short, 2=long, 4=64 bits) */
	 64,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_PLT64",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 ONES (64),		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 64-bit PC relative relocation to the symbol's procedure linkage
     table.  */
  /* FIXME: R_PPC64_PLTREL64 not supported.  */
  HOWTO (R_PPC64_PLTREL64,	/* type */
	 0,			/* rightshift */
	 4,			/* size (0=byte, 1=short, 2=long, 4=64 bits) */
	 64,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 ppc64_elf_unhandled_reloc, /* special_function */
	 "R_PPC64_PLTREL64",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 ONES (64),		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* 16 bit TOC-relative relocation.  */

  /* R_PPC64_TOC16	  47	   half16*	S + A - .TOC.  */
  HOWTO (R_PPC64_TOC16,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 ppc64_elf_toc_reloc,	/* special_function */
	 "R_PPC64_TOC16",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 16 bit TOC-relative relocation without overflow.  */

  /* R_PPC64_TOC16_LO	  48	   half16	 #lo (S + A - .TOC.)  */
  HOWTO (R_PPC64_TOC16_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 */
	 ppc64_elf_toc_reloc,	/* special_function */
	 "R_PPC64_TOC16_LO",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 16 bit TOC-relative relocation, high 16 bits.  */

  /* R_PPC64_TOC16_HI	  49	   half16	 #hi (S + A - .TOC.)  */
  HOWTO (R_PPC64_TOC16_HI,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 ppc64_elf_toc_reloc,	/* special_function */
	 "R_PPC64_TOC16_HI",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
     contents of the low 16 bits, treated as a signed number, is
     negative.  */

  /* R_PPC64_TOC16_HA	  50	   half16	 #ha (S + A - .TOC.)  */
  HOWTO (R_PPC64_TOC16_HA,	/* type */
	 16,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */