binutils-gdb/bfd/elfarm-nabi.c

/* 32-bit ELF support for ARM new abi option.
   Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

   This file is part of BFD, the Binary File Descriptor library.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "elf/arm.h"
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"

#ifndef NUM_ELEM
#define NUM_ELEM(a)  (sizeof (a) / (sizeof (a)[0]))
#endif

#define USE_REL	1

#define elf_info_to_howto               0
#define elf_info_to_howto_rel           elf32_arm_info_to_howto

#define ARM_ELF_ABI_VERSION		0
#define ARM_ELF_OS_ABI_VERSION		ELFOSABI_ARM

static reloc_howto_type * elf32_arm_reloc_type_lookup
  PARAMS ((bfd * abfd, bfd_reloc_code_real_type code));
static bfd_boolean elf32_arm_nabi_grok_prstatus
  PARAMS ((bfd *abfd, Elf_Internal_Note *note));
static bfd_boolean elf32_arm_nabi_grok_psinfo
  PARAMS ((bfd *abfd, Elf_Internal_Note *note));

/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
   R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
   in that slot.  */

static reloc_howto_type elf32_arm_howto_table[] =
{
  /* No relocation */
  HOWTO (R_ARM_NONE,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_NONE",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_PC24,		/* type */
	 2,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 24,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_PC24",		/* name */
	 FALSE,			/* partial_inplace */
	 0x00ffffff,		/* src_mask */
	 0x00ffffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* 32 bit absolute */
  HOWTO (R_ARM_ABS32,		/* 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_ARM_ABS32",		/* name */
	 FALSE,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* standard 32bit pc-relative reloc */
  HOWTO (R_ARM_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_ARM_REL32",		/* name */
	 FALSE,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* 8 bit absolute */
  HOWTO (R_ARM_PC13,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_PC13",		/* name */
	 FALSE,			/* partial_inplace */
	 0x000000ff,		/* src_mask */
	 0x000000ff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

   /* 16 bit absolute */
  HOWTO (R_ARM_ABS16,		/* 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_ARM_ABS16",		/* name */
	 FALSE,			/* partial_inplace */
	 0x0000ffff,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 12 bit absolute */
  HOWTO (R_ARM_ABS12,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 12,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_ABS12",		/* name */
	 FALSE,			/* partial_inplace */
	 0x000008ff,		/* src_mask */
	 0x000008ff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_THM_ABS5,	/* type */
	 6,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 5,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_THM_ABS5",	/* name */
	 FALSE,			/* partial_inplace */
	 0x000007e0,		/* src_mask */
	 0x000007e0,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* 8 bit absolute */
  HOWTO (R_ARM_ABS8,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_ABS8",		/* name */
	 FALSE,			/* partial_inplace */
	 0x000000ff,		/* src_mask */
	 0x000000ff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_SBREL32,		/* 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_ARM_SBREL32",	/* name */
	 FALSE,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_THM_PC22,	/* type */
	 1,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 23,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_THM_PC22",	/* name */
	 FALSE,			/* partial_inplace */
	 0x07ff07ff,		/* src_mask */
	 0x07ff07ff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  HOWTO (R_ARM_THM_PC8,	        /* type */
	 1,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_THM_PC8",	/* name */
	 FALSE,			/* partial_inplace */
	 0x000000ff,		/* src_mask */
	 0x000000ff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  HOWTO (R_ARM_AMP_VCALL9,	/* type */
	 1,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_AMP_VCALL9",	/* name */
	 FALSE,			/* partial_inplace */
	 0x000000ff,		/* src_mask */
	 0x000000ff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  HOWTO (R_ARM_SWI24,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_SWI24",		/* name */
	 FALSE,			/* partial_inplace */
	 0x00000000,		/* src_mask */
	 0x00000000,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_THM_SWI8,	/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_SWI8",		/* name */
	 FALSE,			/* partial_inplace */
	 0x00000000,		/* src_mask */
	 0x00000000,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* BLX instruction for the ARM.  */
  HOWTO (R_ARM_XPC25,		/* type */
	 2,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 25,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_XPC25",		/* name */
	 FALSE,			/* partial_inplace */
	 0x00ffffff,		/* src_mask */
	 0x00ffffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* BLX instruction for the Thumb.  */
  HOWTO (R_ARM_THM_XPC22,	/* type */
	 2,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 22,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_THM_XPC22",	/* name */
	 FALSE,			/* partial_inplace */
	 0x07ff07ff,		/* src_mask */
	 0x07ff07ff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  /* These next three relocs are not defined, but we need to fill the space.  */

  HOWTO (R_ARM_NONE,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_unknown_17",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_NONE,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_unknown_18",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_NONE,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_unknown_19",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  /* Relocs used in ARM Linux */

  HOWTO (R_ARM_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_ARM_COPY",		/* name */
         TRUE,			/* partial_inplace */
         0xffffffff,		/* src_mask */
         0xffffffff,		/* dst_mask */
         FALSE),                /* pcrel_offset */

  HOWTO (R_ARM_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_ARM_GLOB_DAT",	/* name */
         TRUE,			/* partial_inplace */
         0xffffffff,		/* src_mask */
         0xffffffff,		/* dst_mask */
         FALSE),                /* pcrel_offset */

  HOWTO (R_ARM_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_elf_generic_reloc, /* special_function */
         "R_ARM_JUMP_SLOT",	/* name */
         TRUE,			/* partial_inplace */
         0xffffffff,		/* src_mask */
         0xffffffff,		/* dst_mask */
         FALSE),                /* pcrel_offset */

  HOWTO (R_ARM_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_ARM_RELATIVE",	/* name */
         TRUE,			/* partial_inplace */
         0xffffffff,		/* src_mask */
         0xffffffff,		/* dst_mask */
         FALSE),                /* pcrel_offset */

  HOWTO (R_ARM_GOTOFF,		/* 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_ARM_GOTOFF",	/* name */
         TRUE,			/* partial_inplace */
         0xffffffff,		/* src_mask */
         0xffffffff,		/* dst_mask */
         FALSE),                /* pcrel_offset */

  HOWTO (R_ARM_GOTPC,		/* 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_ARM_GOTPC",		/* name */
         TRUE,			/* partial_inplace */
         0xffffffff,		/* src_mask */
         0xffffffff,		/* dst_mask */
         TRUE),			/* pcrel_offset */

  HOWTO (R_ARM_GOT32,		/* 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_ARM_GOT32",		/* name */
         TRUE,			/* partial_inplace */
         0xffffffff,		/* src_mask */
         0xffffffff,		/* dst_mask */
         FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_PLT32,		/* type */
         2,                     /* rightshift */
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
         26,                    /* bitsize */
         TRUE,			/* pc_relative */
         0,                     /* bitpos */
         complain_overflow_bitfield,/* complain_on_overflow */
         bfd_elf_generic_reloc, /* special_function */
         "R_ARM_PLT32",		/* name */
         TRUE,			/* partial_inplace */
         0x00ffffff,		/* src_mask */
         0x00ffffff,		/* dst_mask */
         TRUE),			/* pcrel_offset */

  /* End of relocs used in ARM Linux */

  HOWTO (R_ARM_RREL32,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_RREL32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_RABS32,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_RABS32",	/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_RPC24,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_RPC24",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_RBASE,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_RBASE",		/* name */
	 FALSE,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_ALU_PCREL7_0,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 12,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_ALU_PCREL_7_0",	/* name */
	 FALSE,			/* partial_inplace */
	 0x00000fff,		/* src_mask */
	 0x00000fff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  HOWTO (R_ARM_ALU_PCREL15_8,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 12,			/* bitsize */
	 TRUE,			/* pc_relative */
	 8,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_ALU_PCREL_15_8",/* name */
	 FALSE,			/* partial_inplace */
	 0x00000fff,		/* src_mask */
	 0x00000fff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  HOWTO (R_ARM_ALU_PCREL23_15,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 12,			/* bitsize */
	 TRUE,			/* pc_relative */
	 16,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_ALU_PCREL_23_15",/* name */
	 FALSE,			/* partial_inplace */
	 0x00000fff,		/* src_mask */
	 0x00000fff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  HOWTO (R_ARM_LDR_SBREL_11_0,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 12,			/* bitsize */
	 FALSE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_LDR_SBREL_11_0",/* name */
	 FALSE,			/* partial_inplace */
	 0x00000fff,		/* src_mask */
	 0x00000fff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_ALU_SBREL_19_12,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 FALSE,			/* pc_relative */
	 12,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_ALU_SBREL_19_12",/* name */
	 FALSE,			/* partial_inplace */
	 0x000ff000,		/* src_mask */
	 0x000ff000,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_ALU_SBREL_27_20,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 FALSE,			/* pc_relative */
	 20,			/* bitpos */
	 complain_overflow_dont,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_ALU_SBREL_27_20",/* name */
	 FALSE,			/* partial_inplace */
	 0x0ff00000,		/* src_mask */
	 0x0ff00000,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_TARGET1,		/* 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_ARM_TARGET1",	/* name */
	 FALSE,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_ROSEGREL32,	/* 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_ARM_ROSEGREL32",	/* name */
	 FALSE,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_V4BX,		/* 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_ARM_V4BX",		/* name */
	 FALSE,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 FALSE),		/* pcrel_offset */

  HOWTO (R_ARM_TARGET2,		/* 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_elf_generic_reloc,	/* special_function */
	 "R_ARM_TARGET2",	/* name */
	 FALSE,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */

  HOWTO (R_ARM_PREL31,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 31,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_PREL31",	/* name */
	 FALSE,			/* partial_inplace */
	 0x7fffffff,		/* src_mask */
	 0x7fffffff,		/* dst_mask */
	 TRUE),			/* pcrel_offset */
};

  /* GNU extension to record C++ vtable hierarchy */
static reloc_howto_type elf32_arm_vtinherit_howto =
  HOWTO (R_ARM_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_ARM_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 elf32_arm_vtentry_howto =
  HOWTO (R_ARM_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_ARM_GNU_VTENTRY",   /* name */
         FALSE,                 /* partial_inplace */
         0,                     /* src_mask */
         0,                     /* dst_mask */
         FALSE);                /* pcrel_offset */

  /* 12 bit pc relative */
static reloc_howto_type elf32_arm_thm_pc11_howto =
  HOWTO (R_ARM_THM_PC11,	/* type */
	 1,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 11,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,	/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_THM_PC11",	/* name */
	 FALSE,			/* partial_inplace */
	 0x000007ff,		/* src_mask */
	 0x000007ff,		/* dst_mask */
	 TRUE);			/* pcrel_offset */

  /* 12 bit pc relative */
static reloc_howto_type elf32_arm_thm_pc9_howto =
  HOWTO (R_ARM_THM_PC9,		/* type */
	 1,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 8,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed,	/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_THM_PC9",	/* name */
	 FALSE,			/* partial_inplace */
	 0x000000ff,		/* src_mask */
	 0x000000ff,		/* dst_mask */
	 TRUE);			/* pcrel_offset */

/* Place relative GOT-indirect.  */
static reloc_howto_type elf32_arm_got_prel =
  HOWTO (R_ARM_GOT_PREL,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 TRUE,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont,	/* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_ARM_GOT_PREL",	/* name */
	 FALSE,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 TRUE);			/* pcrel_offset */

static reloc_howto_type *
elf32_arm_howto_from_type (unsigned int r_type)
{
  if (r_type < NUM_ELEM (elf32_arm_howto_table))
    return &elf32_arm_howto_table[r_type];
    
  switch (r_type)
    {
    case R_ARM_GOT_PREL:
      return &elf32_arm_got_prel;

    case R_ARM_GNU_VTINHERIT:
      return &elf32_arm_vtinherit_howto;

    case R_ARM_GNU_VTENTRY:
      return &elf32_arm_vtentry_howto;

    case R_ARM_THM_PC11:
      return &elf32_arm_thm_pc11_howto;

    case R_ARM_THM_PC9:
      return &elf32_arm_thm_pc9_howto;

    default:
      return NULL;
    }
}

static void
elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
			 Elf_Internal_Rela * elf_reloc)
{
  unsigned int r_type;

  r_type = ELF32_R_TYPE (elf_reloc->r_info);
  bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
}

struct elf32_arm_reloc_map
  {
    bfd_reloc_code_real_type  bfd_reloc_val;
    unsigned char             elf_reloc_val;
  };

/* All entries in this list must also be present in elf32_arm_howto_table.  */
static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
  {
    {BFD_RELOC_NONE,                 R_ARM_NONE},
    {BFD_RELOC_ARM_PCREL_BRANCH,     R_ARM_PC24},
    {BFD_RELOC_ARM_PCREL_BLX,        R_ARM_XPC25},
    {BFD_RELOC_THUMB_PCREL_BLX,      R_ARM_THM_XPC22},
    {BFD_RELOC_32,                   R_ARM_ABS32},
    {BFD_RELOC_32_PCREL,             R_ARM_REL32},
    {BFD_RELOC_8,                    R_ARM_ABS8},
    {BFD_RELOC_16,                   R_ARM_ABS16},
    {BFD_RELOC_ARM_OFFSET_IMM,       R_ARM_ABS12},
    {BFD_RELOC_ARM_THUMB_OFFSET,     R_ARM_THM_ABS5},
    {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22},
    {BFD_RELOC_ARM_COPY,             R_ARM_COPY},
    {BFD_RELOC_ARM_GLOB_DAT,         R_ARM_GLOB_DAT},
    {BFD_RELOC_ARM_JUMP_SLOT,        R_ARM_JUMP_SLOT},
    {BFD_RELOC_ARM_RELATIVE,         R_ARM_RELATIVE},
    {BFD_RELOC_ARM_GOTOFF,           R_ARM_GOTOFF},
    {BFD_RELOC_ARM_GOTPC,            R_ARM_GOTPC},
    {BFD_RELOC_ARM_GOT32,            R_ARM_GOT32},
    {BFD_RELOC_ARM_PLT32,            R_ARM_PLT32},
    {BFD_RELOC_ARM_TARGET1,	     R_ARM_TARGET1},
    {BFD_RELOC_ARM_ROSEGREL32,	     R_ARM_ROSEGREL32},
    {BFD_RELOC_ARM_SBREL32,	     R_ARM_SBREL32},
    {BFD_RELOC_ARM_PREL31,	     R_ARM_PREL31},
    {BFD_RELOC_ARM_TARGET2,	     R_ARM_TARGET2}
  };

static reloc_howto_type *
elf32_arm_reloc_type_lookup (abfd, code)
     bfd *abfd ATTRIBUTE_UNUSED;
     bfd_reloc_code_real_type code;
{
  unsigned int i;

  switch (code)
    {
    case BFD_RELOC_VTABLE_INHERIT:
      return & elf32_arm_vtinherit_howto;

    case BFD_RELOC_VTABLE_ENTRY:
      return & elf32_arm_vtentry_howto;

    case BFD_RELOC_THUMB_PCREL_BRANCH12:
      return & elf32_arm_thm_pc11_howto;

    case BFD_RELOC_THUMB_PCREL_BRANCH9:
      return & elf32_arm_thm_pc9_howto;

    default:
      for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
	if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
	  return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val];

      return NULL;
   }
}

/* Support for core dump NOTE sections */
static bfd_boolean
elf32_arm_nabi_grok_prstatus (abfd, note)
     bfd *abfd;
     Elf_Internal_Note *note;
{
  int offset;
  size_t size;

  switch (note->descsz)
    {
      default:
	return FALSE;

      case 148:		/* Linux/ARM 32-bit*/
	/* pr_cursig */
	elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);

	/* pr_pid */
	elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);

	/* pr_reg */
	offset = 72;
	size = 72;

	break;
    }

  /* Make a ".reg/999" section.  */
  return _bfd_elfcore_make_pseudosection (abfd, ".reg",
					  size, note->descpos + offset);
}

static bfd_boolean
elf32_arm_nabi_grok_psinfo (abfd, note)
     bfd *abfd;
     Elf_Internal_Note *note;
{
  switch (note->descsz)
    {
      default:
	return FALSE;

      case 124:		/* Linux/ARM elf_prpsinfo */
	elf_tdata (abfd)->core_program
	 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
	elf_tdata (abfd)->core_command
	 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 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;
}

#define TARGET_LITTLE_SYM               bfd_elf32_littlearm_vec
#define TARGET_LITTLE_NAME              "elf32-littlearm"
#define TARGET_BIG_SYM                  bfd_elf32_bigarm_vec
#define TARGET_BIG_NAME                 "elf32-bigarm"

#define elf_backend_grok_prstatus	elf32_arm_nabi_grok_prstatus
#define elf_backend_grok_psinfo		elf32_arm_nabi_grok_psinfo

#include "elf32-arm.h"

/* Symbian OS Targets */

#undef TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM               bfd_elf32_littlearm_symbian_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME              "elf32-littlearm-symbian"
#undef TARGET_BIG_SYM
#define TARGET_BIG_SYM                  bfd_elf32_bigarm_symbian_vec
#undef TARGET_BIG_NAME
#define TARGET_BIG_NAME                 "elf32-bigarm-symbian"

/* Like elf32_arm_link_hash_table_create -- but overrides
   appropriately for Symbian OS.  */
static struct bfd_link_hash_table *
elf32_arm_symbian_link_hash_table_create (bfd *abfd)
{
  struct bfd_link_hash_table *ret;

  ret = elf32_arm_link_hash_table_create (abfd);
  if (ret)
    {
      struct elf32_arm_link_hash_table *htab
	= (struct elf32_arm_link_hash_table *)ret;
      /* There is no PLT header for Symbian OS.  */
      htab->plt_header_size = 0;
      /* The PLT entries are each three instructions.  */
      htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry);
      htab->symbian_p = 1;
    }
  return ret;
}     

/* In a BPABI executable, the dynamic linking sections do not go in
   the loadable read-only segment.  The post-linker may wish to refer
   to these sections, but they are not part of the final program
   image.  */
static struct bfd_elf_special_section const 
  elf32_arm_symbian_special_sections[]=
{
  { ".dynamic",        8,  0, SHT_DYNAMIC,  0 },
  { ".dynstr",         7,  0, SHT_STRTAB,   0 },
  { ".dynsym",         7,  0, SHT_DYNSYM,   0 },
  { ".got",            4,  0, SHT_PROGBITS, 0 },
  { ".hash",           5,  0, SHT_HASH,     0 },
  { NULL,              0,  0, 0,            0 }
};

static bfd_boolean
elf32_arm_symbian_modify_segment_map
  PARAMS ((bfd *, struct bfd_link_info *));

static bfd_boolean
elf32_arm_symbian_modify_segment_map (abfd, info)
     bfd *abfd;
     struct bfd_link_info *info ATTRIBUTE_UNUSED;
{
  struct elf_segment_map *m;
  asection *dynsec;

  /* The first PT_LOAD segment will have the program headers and file
     headers in it by default -- but BPABI object files should not
     include these headers in any loadable segment.  */
  for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
    if (m->p_type == PT_LOAD)
      {
	m->includes_filehdr = 0;
	m->includes_phdrs = 0;
      }

  /* BPABI shared libraries and executables should have a PT_DYNAMIC
     segment.  However, because the .dynamic section is not marked
     with SEC_LOAD, the generic ELF code will not create such a
     segment.  */
  dynsec = bfd_get_section_by_name (abfd, ".dynamic");
  if (dynsec)
    {
      m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
      m->next = elf_tdata (abfd)->segment_map;
      elf_tdata (abfd)->segment_map = m;
    }

  return TRUE;
}

#undef elf32_bed
#define elf32_bed elf32_arm_symbian_bed

#undef ELF_DYNAMIC_SEC_FLAGS
#define ELF_DYNAMIC_SEC_FLAGS \
  (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)

#undef bfd_elf32_bfd_link_hash_table_create
#define bfd_elf32_bfd_link_hash_table_create \
  elf32_arm_symbian_link_hash_table_create

#undef elf_backend_special_sections
#define elf_backend_special_sections elf32_arm_symbian_special_sections

#undef elf_backend_modify_segment_map
#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map

/* There is no .got section for BPABI objects, and hence no header.  */
#undef elf_backend_got_header_size
#define elf_backend_got_header_size 0

/* Similarly, there is no .got.plt section.  */
#undef elf_backend_want_got_plt
#define elf_backend_want_got_plt 0

#include "elf32-target.h"