[binutils.git] / bfd / elfarm-oabi.c

/* 32-bit ELF support for ARM old abi option.
   Copyright 1999 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-oabi.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_RELA

#define TARGET_LITTLE_SYM               bfd_elf32_littlearm_oabi_vec
#define TARGET_LITTLE_NAME              "elf32-littlearm-oabi"
#define TARGET_BIG_SYM                  bfd_elf32_bigarm_oabi_vec
#define TARGET_BIG_NAME                 "elf32-bigarm-oabi"

#define elf_info_to_howto               elf32_arm_info_to_howto
#define elf_info_to_howto_rel           0

#define ARM_ELF_ABI_VERSION		0
#define ARM_ELF_OS_ABI_VERSION		0

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_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 */

   /* 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 */
	 0,			/* src_mask */
	 0,			/* 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 */

  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_SBREL32,		/* 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_SBREL32",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* 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 */

  /* 12 bit pc relative */
  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 */
  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 */

  /* GNU extension to record C++ vtable hierarchy */
  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 */
  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 */

  /* XXX - gap in index numbering here.  */
  
  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 */
  
  /* XXX - gap in index numbering here.  */

  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 */
};

/* Locate a reloc in the howto table.  This function must be used
   when the entry number is is > R_ARM_GNU_VTINHERIT.  */
static reloc_howto_type *
find_howto (r_type)
     unsigned int r_type;
{
  int i;
  
  for (i = NUM_ELEM (elf32_arm_howto_table); i--;)
    if (elf32_arm_howto_table [i].type == r_type)
      return elf32_arm_howto_table + i;

  return NULL;
}

static void
elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc)
     bfd *abfd;
     arelent *bfd_reloc;
     Elf32_Internal_Rela *elf_reloc;
{
  unsigned int r_type;

  r_type = ELF32_R_TYPE (elf_reloc->r_info);

  if (r_type <= R_ARM_GNU_VTINHERIT)
    bfd_reloc->howto = & elf32_arm_howto_table[r_type];
  else
    bfd_reloc->howto = find_howto (r_type);
}

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

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_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_NONE,                 R_ARM_SBREL32 },
  {BFD_RELOC_NONE,                 R_ARM_AMP_VCALL9 },
  {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_PC11 },
  {BFD_RELOC_THUMB_PCREL_BRANCH9,  R_ARM_THM_PC9 },  
  {BFD_RELOC_VTABLE_INHERIT,       R_ARM_GNU_VTINHERIT },
  {BFD_RELOC_VTABLE_ENTRY,         R_ARM_GNU_VTENTRY }
};

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

  for (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];

  if (code == BFD_RELOC_ARM_PLT32)
    return find_howto (R_ARM_PLT32);
  
  return NULL;
}

#define bfd_elf32_arm_allocate_interworking_sections \
	bfd_elf32_arm_oabi_allocate_interworking_sections
#define bfd_elf32_arm_get_bfd_for_interworking \
	bfd_elf32_arm_oabi_get_bfd_for_interworking
#define bfd_elf32_arm_process_before_allocation \
	bfd_elf32_arm_oabi_process_before_allocation

#include "elf32-arm.h"
Commit	Line	Data
252b5132 RH	1	/* 32-bit ELF support for ARM old abi option.
	2	Copyright 1999 Free Software Foundation, Inc.
	3
	4	This file is part of BFD, the Binary File Descriptor library.
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	19
	20	#include "elf/arm-oabi.h"
	21	#include "bfd.h"
	22	#include "sysdep.h"
	23	#include "libbfd.h"
	24	#include "elf-bfd.h"
	25
5f97aa0c NC	26	#ifndef NUM_ELEM
	27	#define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0])
	28	#endif
	29
252b5132 RH	30	#define USE_RELA
	31
	32	#define TARGET_LITTLE_SYM bfd_elf32_littlearm_oabi_vec
	33	#define TARGET_LITTLE_NAME "elf32-littlearm-oabi"
	34	#define TARGET_BIG_SYM bfd_elf32_bigarm_oabi_vec
	35	#define TARGET_BIG_NAME "elf32-bigarm-oabi"
	36
	37	#define elf_info_to_howto elf32_arm_info_to_howto
	38	#define elf_info_to_howto_rel 0
	39
ba96a88f NC	40	#define ARM_ELF_ABI_VERSION 0
	41	#define ARM_ELF_OS_ABI_VERSION 0
	42
252b5132 RH	43	static reloc_howto_type elf32_arm_howto_table[] =
	44	{
	45	/* No relocation */
	46	HOWTO (R_ARM_NONE, /* type */
	47	0, /* rightshift */
	48	0, /* size (0 = byte, 1 = short, 2 = long) */
	49	0, /* bitsize */
	50	false, /* pc_relative */
	51	0, /* bitpos */
	52	complain_overflow_dont, /* complain_on_overflow */
	53	bfd_elf_generic_reloc, /* special_function */
	54	"R_ARM_NONE", /* name */
	55	false, /* partial_inplace */
	56	0, /* src_mask */
	57	0, /* dst_mask */
	58	false), /* pcrel_offset */
	59
	60	HOWTO (R_ARM_PC24, /* type */
	61	2, /* rightshift */
	62	2, /* size (0 = byte, 1 = short, 2 = long) */
	63	24, /* bitsize */
	64	true, /* pc_relative */
	65	0, /* bitpos */
	66	complain_overflow_signed, /* complain_on_overflow */
	67	bfd_elf_generic_reloc, /* special_function */
	68	"R_ARM_PC24", /* name */
	69	false, /* partial_inplace */
	70	0x00ffffff, /* src_mask */
	71	0x00ffffff, /* dst_mask */
	72	true), /* pcrel_offset */
	73
	74	/* 32 bit absolute */
	75	HOWTO (R_ARM_ABS32, /* type */
	76	0, /* rightshift */
	77	2, /* size (0 = byte, 1 = short, 2 = long) */
	78	32, /* bitsize */
	79	false, /* pc_relative */
	80	0, /* bitpos */
	81	complain_overflow_bitfield, /* complain_on_overflow */
	82	bfd_elf_generic_reloc, /* special_function */
	83	"R_ARM_ABS32", /* name */
	84	false, /* partial_inplace */
	85	0xffffffff, /* src_mask */
	86	0xffffffff, /* dst_mask */
	87	false), /* pcrel_offset */
	88
	89	/* standard 32bit pc-relative reloc */
	90	HOWTO (R_ARM_REL32, /* type */
	91	0, /* rightshift */
	92	2, /* size (0 = byte, 1 = short, 2 = long) */
	93	32, /* bitsize */
	94	true, /* pc_relative */
	95	0, /* bitpos */
	96	complain_overflow_bitfield, /* complain_on_overflow */
	97	bfd_elf_generic_reloc, /* special_function */
	98	"R_ARM_REL32", /* name */
	99	false, /* partial_inplace */
	100	0xffffffff, /* src_mask */
	101	0xffffffff, /* dst_mask */
	102	true), /* pcrel_offset */
	103
	104	/* 8 bit absolute */
	105	HOWTO (R_ARM_ABS8, /* type */
	106	0, /* rightshift */
107	0, /* size (0 = byte, 1 = short, 2 = long) */
108	8, /* bitsize */
109	false, /* pc_relative */
110	0, /* bitpos */
111	complain_overflow_bitfield, /* complain_on_overflow */
112	bfd_elf_generic_reloc, /* special_function */
113	"R_ARM_ABS8", /* name */
114	false, /* partial_inplace */
115	0x000000ff, /* src_mask */
116	0x000000ff, /* dst_mask */
117	false), /* pcrel_offset */
118
119	/* 16 bit absolute */
120	HOWTO (R_ARM_ABS16, /* type */
121	0, /* rightshift */
122	1, /* size (0 = byte, 1 = short, 2 = long) */
123	16, /* bitsize */
124	false, /* pc_relative */
125	0, /* bitpos */
126	complain_overflow_bitfield, /* complain_on_overflow */
127	bfd_elf_generic_reloc, /* special_function */
128	"R_ARM_ABS16", /* name */
129	false, /* partial_inplace */
130	0, /* src_mask */
131	0, /* dst_mask */
132	false), /* pcrel_offset */
133
134	/* 12 bit absolute */
135	HOWTO (R_ARM_ABS12, /* type */
136	0, /* rightshift */
137	2, /* size (0 = byte, 1 = short, 2 = long) */
138	12, /* bitsize */
139	false, /* pc_relative */
140	0, /* bitpos */
141	complain_overflow_bitfield, /* complain_on_overflow */
142	bfd_elf_generic_reloc, /* special_function */
143	"R_ARM_ABS12", /* name */
144	false, /* partial_inplace */
145	0x000008ff, /* src_mask */
146	0x000008ff, /* dst_mask */
147	false), /* pcrel_offset */
148
149	HOWTO (R_ARM_THM_ABS5, /* type */
150	6, /* rightshift */
151	1, /* size (0 = byte, 1 = short, 2 = long) */
152	5, /* bitsize */
153	false, /* pc_relative */
154	0, /* bitpos */
155	complain_overflow_bitfield, /* complain_on_overflow */
156	bfd_elf_generic_reloc, /* special_function */
157	"R_ARM_THM_ABS5", /* name */
158	false, /* partial_inplace */
159	0x000007e0, /* src_mask */
160	0x000007e0, /* dst_mask */
161	false), /* pcrel_offset */
162
163	HOWTO (R_ARM_THM_PC22, /* type */
164	1, /* rightshift */
165	2, /* size (0 = byte, 1 = short, 2 = long) */
166	23, /* bitsize */
167	true, /* pc_relative */
168	0, /* bitpos */
169	complain_overflow_signed, /* complain_on_overflow */
170	bfd_elf_generic_reloc, /* special_function */
171	"R_ARM_THM_PC22", /* name */
172	false, /* partial_inplace */
173	0x07ff07ff, /* src_mask */
174	0x07ff07ff, /* dst_mask */
175	true), /* pcrel_offset */
176
177	HOWTO (R_ARM_SBREL32, /* type */
178	0, /* rightshift */
179	0, /* size (0 = byte, 1 = short, 2 = long) */
180	0, /* bitsize */
181	false, /* pc_relative */
182	0, /* bitpos */
ba96a88f	183	complain_overflow_dont,/* complain_on_overflow */
252b5132 RH	184	bfd_elf_generic_reloc, /* special_function */
	185	"R_ARM_SBREL32", /* name */
	186	false, /* partial_inplace */
	187	0, /* src_mask */
	188	0, /* dst_mask */
	189	false), /* pcrel_offset */
	190
	191	HOWTO (R_ARM_AMP_VCALL9, /* type */
	192	1, /* rightshift */
	193	1, /* size (0 = byte, 1 = short, 2 = long) */
	194	8, /* bitsize */
	195	true, /* pc_relative */
	196	0, /* bitpos */
	197	complain_overflow_signed, /* complain_on_overflow */
	198	bfd_elf_generic_reloc, /* special_function */
	199	"R_ARM_AMP_VCALL9", /* name */
	200	false, /* partial_inplace */
	201	0x000000ff, /* src_mask */
	202	0x000000ff, /* dst_mask */
	203	true), /* pcrel_offset */
	204
	205	/* 12 bit pc relative */
	206	HOWTO (R_ARM_THM_PC11, /* type */
	207	1, /* rightshift */
	208	1, /* size (0 = byte, 1 = short, 2 = long) */
	209	11, /* bitsize */
	210	true, /* pc_relative */
	211	0, /* bitpos */
	212	complain_overflow_signed, /* complain_on_overflow */
	213	bfd_elf_generic_reloc, /* special_function */
	214	"R_ARM_THM_PC11", /* name */
	215	false, /* partial_inplace */
	216	0x000007ff, /* src_mask */
	217	0x000007ff, /* dst_mask */
	218	true), /* pcrel_offset */
	219
	220	/* 12 bit pc relative */
	221	HOWTO (R_ARM_THM_PC9, /* type */
	222	1, /* rightshift */
	223	1, /* size (0 = byte, 1 = short, 2 = long) */
	224	8, /* bitsize */
	225	true, /* pc_relative */
	226	0, /* bitpos */
	227	complain_overflow_signed, /* complain_on_overflow */
	228	bfd_elf_generic_reloc, /* special_function */
	229	"R_ARM_THM_PC9", /* name */
	230	false, /* partial_inplace */
	231	0x000000ff, /* src_mask */
	232	0x000000ff, /* dst_mask */
	233	true), /* pcrel_offset */
	234
	235	/* GNU extension to record C++ vtable hierarchy */
	236	HOWTO (R_ARM_GNU_VTINHERIT, /* type */
	237	0, /* rightshift */
	238	2, /* size (0 = byte, 1 = short, 2 = long) */
	239	0, /* bitsize */
	240	false, /* pc_relative */
	241	0, /* bitpos */
	242	complain_overflow_dont, /* complain_on_overflow */
	243	NULL, /* special_function */
	244	"R_ARM_GNU_VTINHERIT", /* name */
	245	false, /* partial_inplace */
	246	0, /* src_mask */
	247	0, /* dst_mask */
248	false), /* pcrel_offset */
249
250	/* GNU extension to record C++ vtable member usage */
251	HOWTO (R_ARM_GNU_VTENTRY, /* type */
252	0, /* rightshift */
253	2, /* size (0 = byte, 1 = short, 2 = long) */
254	0, /* bitsize */
255	false, /* pc_relative */
256	0, /* bitpos */
257	complain_overflow_dont, /* complain_on_overflow */
258	_bfd_elf_rel_vtable_reloc_fn, /* special_function */
259	"R_ARM_GNU_VTENTRY", /* name */
260	false, /* partial_inplace */
261	0, /* src_mask */
262	0, /* dst_mask */
263	false), /* pcrel_offset */
5f97aa0c NC	264
	265	/* XXX - gap in index numbering here. */
	266
	267	HOWTO (R_ARM_PLT32, /* type */
	268	2, /* rightshift */
	269	2, /* size (0 = byte, 1 = short, 2 = long) */
	270	26, /* bitsize */
	271	true, /* pc_relative */
	272	0, /* bitpos */
	273	complain_overflow_bitfield,/* complain_on_overflow */
	274	bfd_elf_generic_reloc, /* special_function */
	275	"R_ARM_PLT32", /* name */
	276	true, /* partial_inplace */
	277	0x00ffffff, /* src_mask */
	278	0x00ffffff, /* dst_mask */
	279	true), /* pcrel_offset */
	280
	281	/* XXX - gap in index numbering here. */
252b5132 RH	282
	283	HOWTO (R_ARM_RREL32, /* type */
	284	0, /* rightshift */
	285	0, /* size (0 = byte, 1 = short, 2 = long) */
	286	0, /* bitsize */
	287	false, /* pc_relative */
	288	0, /* bitpos */
	289	complain_overflow_dont, /* complain_on_overflow */
	290	bfd_elf_generic_reloc, /* special_function */
	291	"R_ARM_RREL32", /* name */
	292	false, /* partial_inplace */
	293	0, /* src_mask */
	294	0, /* dst_mask */
	295	false), /* pcrel_offset */
	296
	297	HOWTO (R_ARM_RABS32, /* type */
	298	0, /* rightshift */
	299	0, /* size (0 = byte, 1 = short, 2 = long) */
	300	0, /* bitsize */
	301	false, /* pc_relative */
	302	0, /* bitpos */
	303	complain_overflow_dont, /* complain_on_overflow */
	304	bfd_elf_generic_reloc, /* special_function */
	305	"R_ARM_RABS32", /* name */
	306	false, /* partial_inplace */
	307	0, /* src_mask */
	308	0, /* dst_mask */
	309	false), /* pcrel_offset */
	310
	311	HOWTO (R_ARM_RPC24, /* type */
	312	0, /* rightshift */
	313	0, /* size (0 = byte, 1 = short, 2 = long) */
	314	0, /* bitsize */
	315	false, /* pc_relative */
	316	0, /* bitpos */
	317	complain_overflow_dont, /* complain_on_overflow */
	318	bfd_elf_generic_reloc, /* special_function */
	319	"R_ARM_RPC24", /* name */
	320	false, /* partial_inplace */
	321	0, /* src_mask */
	322	0, /* dst_mask */
	323	false), /* pcrel_offset */
	324
	325	HOWTO (R_ARM_RBASE, /* type */
	326	0, /* rightshift */
	327	0, /* size (0 = byte, 1 = short, 2 = long) */
	328	0, /* bitsize */
	329	false, /* pc_relative */
	330	0, /* bitpos */
	331	complain_overflow_dont, /* complain_on_overflow */
	332	bfd_elf_generic_reloc, /* special_function */
	333	"R_ARM_RBASE", /* name */
	334	false, /* partial_inplace */
	335	0, /* src_mask */
	336	0, /* dst_mask */
5f97aa0c	337	false) /* pcrel_offset */
252b5132 RH	338	};
252b5132 RH	339
5f97aa0c NC	340	/* Locate a reloc in the howto table. This function must be used
	341	when the entry number is is > R_ARM_GNU_VTINHERIT. */
	342	static reloc_howto_type *
	343	find_howto (r_type)
	344	unsigned int r_type;
	345	{
	346	int i;
	347
	348	for (i = NUM_ELEM (elf32_arm_howto_table); i--;)
	349	if (elf32_arm_howto_table [i].type == r_type)
	350	return elf32_arm_howto_table + i;
	351
	352	return NULL;
	353	}
	354
252b5132 RH	355	static void
	356	elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc)
	357	bfd *abfd;
	358	arelent *bfd_reloc;
	359	Elf32_Internal_Rela *elf_reloc;
	360	{
	361	unsigned int r_type;
	362
	363	r_type = ELF32_R_TYPE (elf_reloc->r_info);
5f97aa0c NC	364
	365	if (r_type <= R_ARM_GNU_VTINHERIT)
	366	bfd_reloc->howto = & elf32_arm_howto_table[r_type];
	367	else
	368	bfd_reloc->howto = find_howto (r_type);
252b5132 RH	369	}
	370
	371	struct elf32_arm_reloc_map
	372	{
	373	bfd_reloc_code_real_type bfd_reloc_val;
	374	unsigned char elf_reloc_val;
	375	};
	376
	377	static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
	378	{
ba96a88f NC	379	{BFD_RELOC_NONE, R_ARM_NONE },
	380	{BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24 },
	381	{BFD_RELOC_32, R_ARM_ABS32 },
	382	{BFD_RELOC_32_PCREL, R_ARM_REL32 },
	383	{BFD_RELOC_8, R_ARM_ABS8 },
	384	{BFD_RELOC_16, R_ARM_ABS16 },
	385	{BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12 },
	386	{BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5 },
	387	{BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22 },
	388	{BFD_RELOC_NONE, R_ARM_SBREL32 },
	389	{BFD_RELOC_NONE, R_ARM_AMP_VCALL9 },
	390	{BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_PC11 },
	391	{BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_PC9 },
5f97aa0c NC	392	{BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT },
5f97aa0c NC	393	{BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY }
252b5132 RH	394	};
	395
	396	static reloc_howto_type *
	397	elf32_arm_reloc_type_lookup (abfd, code)
	398	bfd * abfd;
	399	bfd_reloc_code_real_type code;
	400	{
	401	unsigned int i;
	402
5f97aa0c NC	403	for (i = NUM_ELEM (elf32_arm_reloc_map); i--;)
	404	if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
	405	return & elf32_arm_howto_table [elf32_arm_reloc_map[i].elf_reloc_val];
252b5132	406
5f97aa0c NC	407	if (code == BFD_RELOC_ARM_PLT32)
	408	return find_howto (R_ARM_PLT32);
	409
252b5132 RH	410	return NULL;
	411	}
	412
	413	#define bfd_elf32_arm_allocate_interworking_sections \
	414	bfd_elf32_arm_oabi_allocate_interworking_sections
	415	#define bfd_elf32_arm_get_bfd_for_interworking \
	416	bfd_elf32_arm_oabi_get_bfd_for_interworking
	417	#define bfd_elf32_arm_process_before_allocation \
	418	bfd_elf32_arm_oabi_process_before_allocation
	419
	420	#include "elf32-arm.h"