[deliverable/binutils-gdb.git] / bfd / mach-o-aarch64.c

/* AArch-64 Mach-O support for BFD.
   Copyright (C) 2015-2017 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 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.  */

#include "sysdep.h"
#include "mach-o.h"
#include "bfd.h"
#include "libbfd.h"
#include "libiberty.h"
#include "mach-o/arm64.h"

#define bfd_mach_o_object_p bfd_mach_o_arm64_object_p
#define bfd_mach_o_core_p bfd_mach_o_arm64_core_p
#define bfd_mach_o_mkobject bfd_mach_o_arm64_mkobject

#define bfd_mach_o_canonicalize_one_reloc \
  bfd_mach_o_arm64_canonicalize_one_reloc
#define bfd_mach_o_swap_reloc_out NULL

#define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_arm64_bfd_reloc_type_lookup
#define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_arm64_bfd_reloc_name_lookup

#define bfd_mach_o_print_thread NULL
#define bfd_mach_o_tgt_seg_table NULL
#define bfd_mach_o_section_type_valid_for_tgt NULL

static const bfd_target *
bfd_mach_o_arm64_object_p (bfd *abfd)
{
  return bfd_mach_o_header_p (abfd, 0, 0, BFD_MACH_O_CPU_TYPE_ARM64);
}

static const bfd_target *
bfd_mach_o_arm64_core_p (bfd *abfd)
{
  return bfd_mach_o_header_p (abfd, 0,
                              BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_ARM64);
}

static bfd_boolean
bfd_mach_o_arm64_mkobject (bfd *abfd)
{
  bfd_mach_o_data_struct *mdata;

  if (!bfd_mach_o_mkobject_init (abfd))
    return FALSE;

  mdata = bfd_mach_o_get_data (abfd);
  mdata->header.magic = BFD_MACH_O_MH_MAGIC;
  mdata->header.cputype = BFD_MACH_O_CPU_TYPE_ARM64;
  mdata->header.cpusubtype = BFD_MACH_O_CPU_SUBTYPE_ARM64_ALL;
  mdata->header.byteorder = BFD_ENDIAN_LITTLE;
  mdata->header.version = 1;

  return TRUE;
}

/* In case we're on a 32-bit machine, construct a 64-bit "-1" value.  */
#define MINUS_ONE (~ (bfd_vma) 0)

static reloc_howto_type arm64_howto_table[]=
{
  /* 0 */
  HOWTO (BFD_RELOC_64, 0, 4, 64, FALSE, 0,
	 complain_overflow_bitfield,
	 NULL, "64",
	 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
  HOWTO (BFD_RELOC_32, 0, 2, 32, FALSE, 0,
	 complain_overflow_bitfield,
	 NULL, "32",
	 FALSE, 0xffffffff, 0xffffffff, FALSE),
  HOWTO (BFD_RELOC_16, 0, 1, 16, FALSE, 0,
	 complain_overflow_bitfield,
	 NULL, "16",
	 FALSE, 0xffff, 0xffff, FALSE),
  HOWTO (BFD_RELOC_8, 0, 0, 8, FALSE, 0,
	 complain_overflow_bitfield,
	 NULL, "8",
	 FALSE, 0xff, 0xff, FALSE),
  /* 4 */
  HOWTO (BFD_RELOC_64_PCREL, 0, 4, 64, TRUE, 0,
	 complain_overflow_bitfield,
	 NULL, "DISP64",
	 FALSE, MINUS_ONE, MINUS_ONE, TRUE),
  HOWTO (BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0,
	 complain_overflow_bitfield,
	 NULL, "DISP32",
	 FALSE, 0xffffffff, 0xffffffff, TRUE),
  HOWTO (BFD_RELOC_16_PCREL, 0, 1, 16, TRUE, 0,
	 complain_overflow_bitfield,
	 NULL, "DISP16",
	 FALSE, 0xffff, 0xffff, TRUE),
  HOWTO (BFD_RELOC_AARCH64_CALL26, 0, 2, 26, TRUE, 0,
	 complain_overflow_bitfield,
	 NULL, "BRANCH26",
	 FALSE, 0x03ffffff, 0x03ffffff, TRUE),
  /* 8 */
  HOWTO (BFD_RELOC_AARCH64_ADR_HI21_PCREL, 12, 2, 21, TRUE, 0,
	 complain_overflow_signed,
	 NULL, "PAGE21",
	 FALSE, 0x1fffff, 0x1fffff, TRUE),
  HOWTO (BFD_RELOC_AARCH64_LDST16_LO12, 1, 2, 12, TRUE, 0,
	 complain_overflow_signed,
	 NULL, "PGOFF12",
	 FALSE, 0xffe, 0xffe, TRUE),
  HOWTO (BFD_RELOC_MACH_O_ARM64_ADDEND, 0, 2, 32, FALSE, 0,
	 complain_overflow_signed,
	 NULL, "ADDEND",
	 FALSE, 0xffffffff, 0xffffffff, FALSE),
  HOWTO (BFD_RELOC_MACH_O_SUBTRACTOR32, 0, 2, 32, FALSE, 0,
	 complain_overflow_bitfield,
	 NULL, "SUBTRACTOR32",
	 FALSE, 0xffffffff, 0xffffffff, FALSE),
  /* 12 */
  HOWTO (BFD_RELOC_MACH_O_SUBTRACTOR64, 0, 4, 64, FALSE, 0,
	 complain_overflow_bitfield,
	 NULL, "SUBTRACTOR64",
	 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
  HOWTO (BFD_RELOC_MACH_O_ARM64_GOT_LOAD_PAGE21, 12, 2, 21, TRUE, 0,
	 complain_overflow_signed,
	 NULL, "GOT_LD_PG21",
	 FALSE, 0x1fffff, 0x1fffff, TRUE),
  HOWTO (BFD_RELOC_MACH_O_ARM64_GOT_LOAD_PAGEOFF12, 1, 2, 12, TRUE, 0,
	 complain_overflow_signed,
	 NULL, "GOT_LD_PGOFF12",
	 FALSE, 0xffe, 0xffe, TRUE),
  HOWTO (BFD_RELOC_MACH_O_ARM64_POINTER_TO_GOT, 0, 2, 32, TRUE, 0,
	 complain_overflow_bitfield,
	 NULL, "PTR_TO_GOT",
	 FALSE, 0xffffffff, 0xffffffff, TRUE),
};

static bfd_boolean
bfd_mach_o_arm64_canonicalize_one_reloc (bfd *abfd,
				       struct mach_o_reloc_info_external *raw,
					 arelent *res, asymbol **syms)
{
  bfd_mach_o_reloc_info reloc;

  res->address = bfd_get_32 (abfd, raw->r_address);
  if (res->address & BFD_MACH_O_SR_SCATTERED)
    {
      /* Only non-scattered relocations.  */
      return FALSE;
    }

  /* The value and info fields have to be extracted dependent on target
     endian-ness.  */
  bfd_mach_o_swap_in_non_scattered_reloc (abfd, &reloc, raw->r_symbolnum);

  if (reloc.r_type == BFD_MACH_O_ARM64_RELOC_ADDEND)
    {
      if (reloc.r_length == 2 && reloc.r_pcrel == 0)
	{
	  res->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
	  res->addend = reloc.r_value;
	  res->howto = &arm64_howto_table[10];
	  return TRUE;
	}
      return FALSE;
    }

  if (!bfd_mach_o_canonicalize_non_scattered_reloc (abfd, &reloc, res, syms))
    return FALSE;

  switch (reloc.r_type)
    {
    case BFD_MACH_O_ARM64_RELOC_UNSIGNED:
      switch ((reloc.r_length << 1) | reloc.r_pcrel)
	{
	case 0: /* len = 0, pcrel = 0  */
	  res->howto = &arm64_howto_table[3];
	  return TRUE;
	case 2: /* len = 1, pcrel = 0  */
	  res->howto = &arm64_howto_table[2];
	  return TRUE;
	case 3: /* len = 1, pcrel = 1  */
	  res->howto = &arm64_howto_table[6];
	  return TRUE;
	case 4: /* len = 2, pcrel = 0  */
	  res->howto = &arm64_howto_table[1];
	  return TRUE;
	case 5: /* len = 2, pcrel = 1  */
	  res->howto = &arm64_howto_table[5];
	  return TRUE;
	case 6: /* len = 3, pcrel = 0  */
	  res->howto = &arm64_howto_table[0];
	  return TRUE;
	case 7: /* len = 3, pcrel = 1  */
	  res->howto = &arm64_howto_table[4];
	  return TRUE;
	default:
	  return FALSE;
	}
      break;
    case BFD_MACH_O_ARM64_RELOC_SUBTRACTOR:
      if (reloc.r_pcrel)
        return FALSE;
      switch (reloc.r_length)
        {
        case 2:
          res->howto = &arm64_howto_table[11];
          return TRUE;
        case 3:
          res->howto = &arm64_howto_table[12];
          return TRUE;
        default:
          return FALSE;
        }
      break;
    case BFD_MACH_O_ARM64_RELOC_BRANCH26:
      if (reloc.r_length == 2 && reloc.r_pcrel == 1)
	{
	  res->howto = &arm64_howto_table[7];
	  return TRUE;
	}
      break;
    case BFD_MACH_O_ARM64_RELOC_PAGE21:
      if (reloc.r_length == 2 && reloc.r_pcrel == 1)
	{
	  res->howto = &arm64_howto_table[8];
	  return TRUE;
	}
      break;
    case BFD_MACH_O_ARM64_RELOC_PAGEOFF12:
      if (reloc.r_length == 2 && reloc.r_pcrel == 0)
	{
	  res->howto = &arm64_howto_table[9];
	  return TRUE;
	}
      break;
    case BFD_MACH_O_ARM64_RELOC_GOT_LOAD_PAGE21:
      if (reloc.r_length == 2 && reloc.r_pcrel == 1)
	{
	  res->howto = &arm64_howto_table[13];
	  return TRUE;
	}
      break;
    case BFD_MACH_O_ARM64_RELOC_GOT_LOAD_PAGEOFF12:
      if (reloc.r_length == 2 && reloc.r_pcrel == 0)
	{
	  res->howto = &arm64_howto_table[14];
	  return TRUE;
	}
      break;
    case BFD_MACH_O_ARM64_RELOC_POINTER_TO_GOT:
      if (reloc.r_length == 2 && reloc.r_pcrel == 1)
	{
	  res->howto = &arm64_howto_table[15];
	  return TRUE;
	}
      break;
    default:
      break;
    }
  return FALSE;
}

static reloc_howto_type *
bfd_mach_o_arm64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
					bfd_reloc_code_real_type code)
{
  unsigned int i;

  for (i = 0;
       i < sizeof (arm64_howto_table) / sizeof (*arm64_howto_table);
       i++)
    if (code == arm64_howto_table[i].type)
      return &arm64_howto_table[i];
  return NULL;
}

static reloc_howto_type *
bfd_mach_o_arm64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
				      const char *name ATTRIBUTE_UNUSED)
{
  return NULL;
}

#define TARGET_NAME 		aarch64_mach_o_vec
#define TARGET_STRING     	"mach-o-arm64"
#define TARGET_ARCHITECTURE	bfd_arch_aarch64
#define TARGET_PAGESIZE		4096
#define TARGET_BIG_ENDIAN 	0
#define TARGET_ARCHIVE 		0
#define TARGET_PRIORITY		0
#include "mach-o-target.c"

#undef TARGET_NAME
#undef TARGET_STRING
#undef TARGET_ARCHIVE
#undef TARGET_PRIORITY
Commit	Line	Data
f075eb5e	1	/* AArch-64 Mach-O support for BFD.
2571583a	2	Copyright (C) 2015-2017 Free Software Foundation, Inc.
f075eb5e TG	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 3 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., 51 Franklin Street - Fifth Floor, Boston,
	19	MA 02110-1301, USA. */
	20
	21	#include "sysdep.h"
	22	#include "mach-o.h"
	23	#include "bfd.h"
	24	#include "libbfd.h"
	25	#include "libiberty.h"
	26	#include "mach-o/arm64.h"
	27
	28	#define bfd_mach_o_object_p bfd_mach_o_arm64_object_p
	29	#define bfd_mach_o_core_p bfd_mach_o_arm64_core_p
	30	#define bfd_mach_o_mkobject bfd_mach_o_arm64_mkobject
	31
	32	#define bfd_mach_o_canonicalize_one_reloc \
	33	bfd_mach_o_arm64_canonicalize_one_reloc
	34	#define bfd_mach_o_swap_reloc_out NULL
	35
	36	#define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_arm64_bfd_reloc_type_lookup
	37	#define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_arm64_bfd_reloc_name_lookup
	38
	39	#define bfd_mach_o_print_thread NULL
	40	#define bfd_mach_o_tgt_seg_table NULL
	41	#define bfd_mach_o_section_type_valid_for_tgt NULL
	42
	43	static const bfd_target *
	44	bfd_mach_o_arm64_object_p (bfd *abfd)
	45	{
	46	return bfd_mach_o_header_p (abfd, 0, 0, BFD_MACH_O_CPU_TYPE_ARM64);
	47	}
	48
	49	static const bfd_target *
	50	bfd_mach_o_arm64_core_p (bfd *abfd)
	51	{
	52	return bfd_mach_o_header_p (abfd, 0,
	53	BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_ARM64);
	54	}
	55
	56	static bfd_boolean
	57	bfd_mach_o_arm64_mkobject (bfd *abfd)
	58	{
	59	bfd_mach_o_data_struct *mdata;
	60
	61	if (!bfd_mach_o_mkobject_init (abfd))
	62	return FALSE;
	63
	64	mdata = bfd_mach_o_get_data (abfd);
	65	mdata->header.magic = BFD_MACH_O_MH_MAGIC;
	66	mdata->header.cputype = BFD_MACH_O_CPU_TYPE_ARM64;
67	mdata->header.cpusubtype = BFD_MACH_O_CPU_SUBTYPE_ARM64_ALL;
68	mdata->header.byteorder = BFD_ENDIAN_LITTLE;
69	mdata->header.version = 1;
70
71	return TRUE;
72	}
73
74	/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
75	#define MINUS_ONE (~ (bfd_vma) 0)
76
77	static reloc_howto_type arm64_howto_table[]=
78	{
79	/* 0 */
80	HOWTO (BFD_RELOC_64, 0, 4, 64, FALSE, 0,
81	complain_overflow_bitfield,
82	NULL, "64",
83	FALSE, MINUS_ONE, MINUS_ONE, FALSE),
84	HOWTO (BFD_RELOC_32, 0, 2, 32, FALSE, 0,
85	complain_overflow_bitfield,
86	NULL, "32",
87	FALSE, 0xffffffff, 0xffffffff, FALSE),
88	HOWTO (BFD_RELOC_16, 0, 1, 16, FALSE, 0,
89	complain_overflow_bitfield,
90	NULL, "16",
91	FALSE, 0xffff, 0xffff, FALSE),
92	HOWTO (BFD_RELOC_8, 0, 0, 8, FALSE, 0,
93	complain_overflow_bitfield,
94	NULL, "8",
95	FALSE, 0xff, 0xff, FALSE),
96	/* 4 */
97	HOWTO (BFD_RELOC_64_PCREL, 0, 4, 64, TRUE, 0,
98	complain_overflow_bitfield,
99	NULL, "DISP64",
100	FALSE, MINUS_ONE, MINUS_ONE, TRUE),
101	HOWTO (BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0,
102	complain_overflow_bitfield,
103	NULL, "DISP32",
104	FALSE, 0xffffffff, 0xffffffff, TRUE),
105	HOWTO (BFD_RELOC_16_PCREL, 0, 1, 16, TRUE, 0,
106	complain_overflow_bitfield,
107	NULL, "DISP16",
108	FALSE, 0xffff, 0xffff, TRUE),
109	HOWTO (BFD_RELOC_AARCH64_CALL26, 0, 2, 26, TRUE, 0,
110	complain_overflow_bitfield,
111	NULL, "BRANCH26",
112	FALSE, 0x03ffffff, 0x03ffffff, TRUE),
113	/* 8 */
114	HOWTO (BFD_RELOC_AARCH64_ADR_HI21_PCREL, 12, 2, 21, TRUE, 0,
115	complain_overflow_signed,
116	NULL, "PAGE21",
117	FALSE, 0x1fffff, 0x1fffff, TRUE),
118	HOWTO (BFD_RELOC_AARCH64_LDST16_LO12, 1, 2, 12, TRUE, 0,
119	complain_overflow_signed,
120	NULL, "PGOFF12",
121	FALSE, 0xffe, 0xffe, TRUE),
122	HOWTO (BFD_RELOC_MACH_O_ARM64_ADDEND, 0, 2, 32, FALSE, 0,
123	complain_overflow_signed,
124	NULL, "ADDEND",
125	FALSE, 0xffffffff, 0xffffffff, FALSE),
126	HOWTO (BFD_RELOC_MACH_O_SUBTRACTOR32, 0, 2, 32, FALSE, 0,
127	complain_overflow_bitfield,
128	NULL, "SUBTRACTOR32",
129	FALSE, 0xffffffff, 0xffffffff, FALSE),
130	/* 12 */
131	HOWTO (BFD_RELOC_MACH_O_SUBTRACTOR64, 0, 4, 64, FALSE, 0,
132	complain_overflow_bitfield,
133	NULL, "SUBTRACTOR64",
134	FALSE, MINUS_ONE, MINUS_ONE, FALSE),
135	HOWTO (BFD_RELOC_MACH_O_ARM64_GOT_LOAD_PAGE21, 12, 2, 21, TRUE, 0,
136	complain_overflow_signed,
137	NULL, "GOT_LD_PG21",
138	FALSE, 0x1fffff, 0x1fffff, TRUE),
139	HOWTO (BFD_RELOC_MACH_O_ARM64_GOT_LOAD_PAGEOFF12, 1, 2, 12, TRUE, 0,
140	complain_overflow_signed,
141	NULL, "GOT_LD_PGOFF12",
142	FALSE, 0xffe, 0xffe, TRUE),
143	HOWTO (BFD_RELOC_MACH_O_ARM64_POINTER_TO_GOT, 0, 2, 32, TRUE, 0,
144	complain_overflow_bitfield,
145	NULL, "PTR_TO_GOT",
146	FALSE, 0xffffffff, 0xffffffff, TRUE),
147	};
148
149	static bfd_boolean
150	bfd_mach_o_arm64_canonicalize_one_reloc (bfd *abfd,
151	struct mach_o_reloc_info_external *raw,
152	arelent res, asymbol *syms)
153	{
154	bfd_mach_o_reloc_info reloc;
155
156	res->address = bfd_get_32 (abfd, raw->r_address);
157	if (res->address & BFD_MACH_O_SR_SCATTERED)
158	{
159	/* Only non-scattered relocations. */
160	return FALSE;
161	}
162
163	/* The value and info fields have to be extracted dependent on target
164	endian-ness. */
165	bfd_mach_o_swap_in_non_scattered_reloc (abfd, &reloc, raw->r_symbolnum);
166
167	if (reloc.r_type == BFD_MACH_O_ARM64_RELOC_ADDEND)
168	{
169	if (reloc.r_length == 2 && reloc.r_pcrel == 0)
170	{
171	res->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
172	res->addend = reloc.r_value;
173	res->howto = &arm64_howto_table[10];
174	return TRUE;
175	}
176	return FALSE;
177	}
178
179	if (!bfd_mach_o_canonicalize_non_scattered_reloc (abfd, &reloc, res, syms))
180	return FALSE;
181
182	switch (reloc.r_type)
183	{
184	case BFD_MACH_O_ARM64_RELOC_UNSIGNED:
185	switch ((reloc.r_length << 1) \| reloc.r_pcrel)
186	{
187	case 0: /* len = 0, pcrel = 0 */
188	res->howto = &arm64_howto_table[3];
189	return TRUE;
190	case 2: /* len = 1, pcrel = 0 */
191	res->howto = &arm64_howto_table[2];
192	return TRUE;
193	case 3: /* len = 1, pcrel = 1 */
194	res->howto = &arm64_howto_table[6];
195	return TRUE;
196	case 4: /* len = 2, pcrel = 0 */
197	res->howto = &arm64_howto_table[1];
198	return TRUE;
199	case 5: /* len = 2, pcrel = 1 */
200	res->howto = &arm64_howto_table[5];
201	return TRUE;
202	case 6: /* len = 3, pcrel = 0 */
203	res->howto = &arm64_howto_table[0];
204	return TRUE;
205	case 7: /* len = 3, pcrel = 1 */
206	res->howto = &arm64_howto_table[4];
207	return TRUE;
208	default:
209	return FALSE;
210	}
211	break;
212	case BFD_MACH_O_ARM64_RELOC_SUBTRACTOR:
213	if (reloc.r_pcrel)
214	return FALSE;
215	switch (reloc.r_length)
216	{
217	case 2:
218	res->howto = &arm64_howto_table[11];
219	return TRUE;
220	case 3:
221	res->howto = &arm64_howto_table[12];
222	return TRUE;
223	default:
224	return FALSE;
225	}
226	break;
227	case BFD_MACH_O_ARM64_RELOC_BRANCH26:
228	if (reloc.r_length == 2 && reloc.r_pcrel == 1)
229	{
230	res->howto = &arm64_howto_table[7];
231	return TRUE;
232	}
233	break;
234	case BFD_MACH_O_ARM64_RELOC_PAGE21:
235	if (reloc.r_length == 2 && reloc.r_pcrel == 1)
236	{
237	res->howto = &arm64_howto_table[8];
238	return TRUE;
239	}
240	break;
241	case BFD_MACH_O_ARM64_RELOC_PAGEOFF12:
242	if (reloc.r_length == 2 && reloc.r_pcrel == 0)
243	{
244	res->howto = &arm64_howto_table[9];
245	return TRUE;
246	}
247	break;
248	case BFD_MACH_O_ARM64_RELOC_GOT_LOAD_PAGE21:
249	if (reloc.r_length == 2 && reloc.r_pcrel == 1)
250	{
251	res->howto = &arm64_howto_table[13];
252	return TRUE;
253	}
254	break;
255	case BFD_MACH_O_ARM64_RELOC_GOT_LOAD_PAGEOFF12:
256	if (reloc.r_length == 2 && reloc.r_pcrel == 0)
257	{
258	res->howto = &arm64_howto_table[14];
259	return TRUE;
260	}
261	break;
262	case BFD_MACH_O_ARM64_RELOC_POINTER_TO_GOT:
263	if (reloc.r_length == 2 && reloc.r_pcrel == 1)
264	{
265	res->howto = &arm64_howto_table[15];
266	return TRUE;
267	}
268	break;
269	default:
270	break;
271	}
272	return FALSE;
273	}
274
275	static reloc_howto_type *
276	bfd_mach_o_arm64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
277	bfd_reloc_code_real_type code)
278	{
279	unsigned int i;
280
281	for (i = 0;
282	i < sizeof (arm64_howto_table) / sizeof (*arm64_howto_table);
283	i++)
284	if (code == arm64_howto_table[i].type)
285	return &arm64_howto_table[i];
286	return NULL;
287	}
288
289	static reloc_howto_type *
290	bfd_mach_o_arm64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
291	const char *name ATTRIBUTE_UNUSED)
292	{
293	return NULL;
294	}
295
296	#define TARGET_NAME aarch64_mach_o_vec
297	#define TARGET_STRING "mach-o-arm64"
298	#define TARGET_ARCHITECTURE bfd_arch_aarch64
299	#define TARGET_PAGESIZE 4096
300	#define TARGET_BIG_ENDIAN 0
301	#define TARGET_ARCHIVE 0
302	#define TARGET_PRIORITY 0
303	#include "mach-o-target.c"
304
305	#undef TARGET_NAME
306	#undef TARGET_STRING
307	#undef TARGET_ARCHIVE
308	#undef TARGET_PRIORITY