[deliverable/binutils-gdb.git] / bfd / mach-o-x86-64.c

/* Intel x86-64 Mach-O support for BFD.
   Copyright 2010
   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"

#define bfd_mach_o_object_p bfd_mach_o_x86_64_object_p
#define bfd_mach_o_core_p bfd_mach_o_x86_64_core_p
#define bfd_mach_o_mkobject bfd_mach_o_x86_64_mkobject

static const bfd_target *
bfd_mach_o_x86_64_object_p (bfd *abfd)
{
  return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_CPU_TYPE_X86_64);
}

static const bfd_target *
bfd_mach_o_x86_64_core_p (bfd *abfd)
{
  return bfd_mach_o_header_p (abfd,
                              BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_X86_64);
}

static bfd_boolean
bfd_mach_o_x86_64_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_X86_64;
  mdata->header.cpusubtype = BFD_MACH_O_CPU_SUBTYPE_X86_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 x86_64_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_32_PCREL, 0, 2, 32, TRUE, 0,
	complain_overflow_bitfield,
	NULL, "DISP32",
	FALSE, 0xffffffff, 0xffffffff, TRUE),
  HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_1, 0, 2, 32, TRUE, 0,
	complain_overflow_bitfield,
	NULL, "DISP32_1",
	FALSE, 0xffffffff, 0xffffffff, TRUE),
  /* 4 */
  HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_2, 0, 2, 32, TRUE, 0,
	complain_overflow_bitfield,
	NULL, "DISP32_2",
	FALSE, 0xffffffff, 0xffffffff, TRUE),
  HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_4, 0, 2, 32, TRUE, 0,
	complain_overflow_bitfield,
	NULL, "DISP32_4",
	FALSE, 0xffffffff, 0xffffffff, TRUE),
  HOWTO(BFD_RELOC_MACH_O_X86_64_BRANCH32, 0, 2, 32, TRUE, 0,
	complain_overflow_bitfield,
	NULL, "BRANCH32",
	FALSE, 0xffffffff, 0xffffffff, TRUE),
  HOWTO(BFD_RELOC_MACH_O_X86_64_GOT_LOAD, 0, 2, 32, TRUE, 0,
	complain_overflow_bitfield,
	NULL, "GOT_LOAD",
	FALSE, 0xffffffff, 0xffffffff, TRUE),
  /* 8 */
  HOWTO(BFD_RELOC_MACH_O_X86_64_SUBTRACTOR32, 0, 2, 32, FALSE, 0,
	complain_overflow_bitfield,
	NULL, "SUBTRACTOR32",
	FALSE, 0xffffffff, 0xffffffff, FALSE),
  HOWTO(BFD_RELOC_MACH_O_X86_64_SUBTRACTOR64, 0, 4, 64, FALSE, 0,
	complain_overflow_bitfield,
	NULL, "SUBTRACTOR64",
	FALSE, MINUS_ONE, MINUS_ONE, FALSE),
  HOWTO(BFD_RELOC_MACH_O_X86_64_GOT, 0, 2, 32, TRUE, 0,
	complain_overflow_bitfield,
	NULL, "GOT",
	FALSE, 0xffffffff, 0xffffffff, TRUE),
  HOWTO(BFD_RELOC_MACH_O_X86_64_BRANCH8, 0, 0, 8, TRUE, 0,
	complain_overflow_bitfield,
	NULL, "BRANCH8",
	FALSE, 0xff, 0xff, TRUE),
};

static bfd_boolean
bfd_mach_o_x86_64_swap_reloc_in (arelent *res, bfd_mach_o_reloc_info *reloc)
{
  /* On x86-64, scattered relocs are not used.  */
  if (reloc->r_scattered)
    return FALSE;

  switch (reloc->r_type)
    {
    case BFD_MACH_O_X86_64_RELOC_UNSIGNED:
      if (reloc->r_pcrel)
        return FALSE;
      switch (reloc->r_length)
        {
        case 2:
          res->howto = &x86_64_howto_table[1];
          return TRUE;
        case 3:
          res->howto = &x86_64_howto_table[0];
          return TRUE;
        default:
          return FALSE;
        }
    case BFD_MACH_O_X86_64_RELOC_SIGNED:
      if (reloc->r_length == 2 && reloc->r_pcrel)
        {
          res->howto = &x86_64_howto_table[2];
          return TRUE;
        }
      break;
    case BFD_MACH_O_X86_64_RELOC_BRANCH:
      if (!reloc->r_pcrel)
        return FALSE;
      switch (reloc->r_length)
        {
        case 2:
          res->howto = &x86_64_howto_table[6];
          return TRUE;
        default:
          return FALSE;
        }
      break;
    case BFD_MACH_O_X86_64_RELOC_GOT_LOAD:
      if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern)
        {
          res->howto = &x86_64_howto_table[7];
          return TRUE;
        }
      break;
    case BFD_MACH_O_X86_64_RELOC_GOT:
      if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern)
        {
          res->howto = &x86_64_howto_table[10];
          return TRUE;
        }
      break;
    case BFD_MACH_O_X86_64_RELOC_SUBTRACTOR:
      if (reloc->r_pcrel)
        return FALSE;
      switch (reloc->r_length)
        {
        case 2:
          res->howto = &x86_64_howto_table[8];
          return TRUE;
        case 3:
          res->howto = &x86_64_howto_table[9];
          return TRUE;
        default:
          return FALSE;
        }
      break;
    case BFD_MACH_O_X86_64_RELOC_SIGNED_1:
      if (reloc->r_length == 2 && reloc->r_pcrel)
        {
          res->howto = &x86_64_howto_table[3];
          return TRUE;
        }
      break;
    case BFD_MACH_O_X86_64_RELOC_SIGNED_2:
      if (reloc->r_length == 2 && reloc->r_pcrel)
        {
          res->howto = &x86_64_howto_table[4];
          return TRUE;
        }
      break;
    case BFD_MACH_O_X86_64_RELOC_SIGNED_4:
      if (reloc->r_length == 2 && reloc->r_pcrel)
        {
          res->howto = &x86_64_howto_table[5];
          return TRUE;
        }
      break;
    default:
      return FALSE;
    }
  return FALSE;
}

static bfd_boolean
bfd_mach_o_x86_64_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo)
{
  rinfo->r_address = rel->address;
  switch (rel->howto->type)
    {
    case BFD_RELOC_64:
      rinfo->r_scattered = 0;
      rinfo->r_type = BFD_MACH_O_X86_64_RELOC_UNSIGNED;
      rinfo->r_pcrel = 0;
      rinfo->r_length = rel->howto->size; /* Correct in practice.  */
      if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
        {
          rinfo->r_extern = 0;
          rinfo->r_value = (*rel->sym_ptr_ptr)->section->target_index;
        }
      else
        {
          rinfo->r_extern = 1;
          rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i;
        }
      break;
    default:
      return FALSE;
    }
  return TRUE;
}

static reloc_howto_type *
bfd_mach_o_x86_64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
                                         bfd_reloc_code_real_type code)
{
  unsigned int i;

  for (i = 0;
       i < sizeof (x86_64_howto_table) / sizeof (*x86_64_howto_table);
       i++)
    if (code == x86_64_howto_table[i].type)
      return &x86_64_howto_table[i];
  return NULL;
}

static reloc_howto_type *
bfd_mach_o_x86_64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
                                         const char *name ATTRIBUTE_UNUSED)
{
  return NULL;
}

#define bfd_mach_o_swap_reloc_in bfd_mach_o_x86_64_swap_reloc_in
#define bfd_mach_o_swap_reloc_out bfd_mach_o_x86_64_swap_reloc_out

#define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_x86_64_bfd_reloc_type_lookup
#define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_x86_64_bfd_reloc_name_lookup
#define bfd_mach_o_print_thread NULL

#define TARGET_NAME 		mach_o_x86_64_vec
#define TARGET_STRING 		"mach-o-x86-64"
#define TARGET_ARCHITECTURE	bfd_arch_i386
#define TARGET_BIG_ENDIAN 	0
#define TARGET_ARCHIVE 		0
#include "mach-o-target.c"
Commit	Line	Data
618b7301 TG	1	/* Intel x86-64 Mach-O support for BFD.
	2	Copyright 2010
	3	Free Software Foundation, Inc.
	4
	5	This file is part of BFD, the Binary File Descriptor library.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 3 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program; if not, write to the Free Software
	19	Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
	20	MA 02110-1301, USA. */
	21
	22	#include "sysdep.h"
	23	#include "mach-o.h"
	24	#include "bfd.h"
	25	#include "libbfd.h"
	26	#include "libiberty.h"
	27
	28	#define bfd_mach_o_object_p bfd_mach_o_x86_64_object_p
	29	#define bfd_mach_o_core_p bfd_mach_o_x86_64_core_p
	30	#define bfd_mach_o_mkobject bfd_mach_o_x86_64_mkobject
	31
	32	static const bfd_target *
	33	bfd_mach_o_x86_64_object_p (bfd *abfd)
	34	{
	35	return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_CPU_TYPE_X86_64);
	36	}
	37
	38	static const bfd_target *
	39	bfd_mach_o_x86_64_core_p (bfd *abfd)
	40	{
	41	return bfd_mach_o_header_p (abfd,
	42	BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_X86_64);
	43	}
	44
	45	static bfd_boolean
	46	bfd_mach_o_x86_64_mkobject (bfd *abfd)
	47	{
	48	bfd_mach_o_data_struct *mdata;
	49
	50	if (!bfd_mach_o_mkobject_init (abfd))
	51	return FALSE;
	52
	53	mdata = bfd_mach_o_get_data (abfd);
	54	mdata->header.magic = BFD_MACH_O_MH_MAGIC;
	55	mdata->header.cputype = BFD_MACH_O_CPU_TYPE_X86_64;
	56	mdata->header.cpusubtype = BFD_MACH_O_CPU_SUBTYPE_X86_ALL;
	57	mdata->header.byteorder = BFD_ENDIAN_LITTLE;
	58	mdata->header.version = 1;
	59
	60	return TRUE;
	61	}
	62
	63	/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
	64	#define MINUS_ONE (~ (bfd_vma) 0)
65
66	static reloc_howto_type x86_64_howto_table[]=
67	{
68	/* 0 */
69	HOWTO(BFD_RELOC_64, 0, 4, 64, FALSE, 0,
70	complain_overflow_bitfield,
71	NULL, "64",
72	FALSE, MINUS_ONE, MINUS_ONE, FALSE),
73	HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0,
74	complain_overflow_bitfield,
75	NULL, "32",
76	FALSE, 0xffffffff, 0xffffffff, FALSE),
77	HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0,
78	complain_overflow_bitfield,
79	NULL, "DISP32",
80	FALSE, 0xffffffff, 0xffffffff, TRUE),
81	HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_1, 0, 2, 32, TRUE, 0,
82	complain_overflow_bitfield,
83	NULL, "DISP32_1",
84	FALSE, 0xffffffff, 0xffffffff, TRUE),
85	/* 4 */
86	HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_2, 0, 2, 32, TRUE, 0,
87	complain_overflow_bitfield,
88	NULL, "DISP32_2",
89	FALSE, 0xffffffff, 0xffffffff, TRUE),
90	HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_4, 0, 2, 32, TRUE, 0,
91	complain_overflow_bitfield,
92	NULL, "DISP32_4",
93	FALSE, 0xffffffff, 0xffffffff, TRUE),
94	HOWTO(BFD_RELOC_MACH_O_X86_64_BRANCH32, 0, 2, 32, TRUE, 0,
95	complain_overflow_bitfield,
96	NULL, "BRANCH32",
97	FALSE, 0xffffffff, 0xffffffff, TRUE),
98	HOWTO(BFD_RELOC_MACH_O_X86_64_GOT_LOAD, 0, 2, 32, TRUE, 0,
99	complain_overflow_bitfield,
100	NULL, "GOT_LOAD",
101	FALSE, 0xffffffff, 0xffffffff, TRUE),
102	/* 8 */
103	HOWTO(BFD_RELOC_MACH_O_X86_64_SUBTRACTOR32, 0, 2, 32, FALSE, 0,
104	complain_overflow_bitfield,
105	NULL, "SUBTRACTOR32",
106	FALSE, 0xffffffff, 0xffffffff, FALSE),
107	HOWTO(BFD_RELOC_MACH_O_X86_64_SUBTRACTOR64, 0, 4, 64, FALSE, 0,
108	complain_overflow_bitfield,
109	NULL, "SUBTRACTOR64",
110	FALSE, MINUS_ONE, MINUS_ONE, FALSE),
111	HOWTO(BFD_RELOC_MACH_O_X86_64_GOT, 0, 2, 32, TRUE, 0,
112	complain_overflow_bitfield,
113	NULL, "GOT",
114	FALSE, 0xffffffff, 0xffffffff, TRUE),
115	HOWTO(BFD_RELOC_MACH_O_X86_64_BRANCH8, 0, 0, 8, TRUE, 0,
116	complain_overflow_bitfield,
117	NULL, "BRANCH8",
118	FALSE, 0xff, 0xff, TRUE),
119	};
120
121	static bfd_boolean
122	bfd_mach_o_x86_64_swap_reloc_in (arelent res, bfd_mach_o_reloc_info reloc)
123	{
124	/* On x86-64, scattered relocs are not used. */
125	if (reloc->r_scattered)
126	return FALSE;
127
128	switch (reloc->r_type)
129	{
130	case BFD_MACH_O_X86_64_RELOC_UNSIGNED:
131	if (reloc->r_pcrel)
132	return FALSE;
133	switch (reloc->r_length)
134	{
135	case 2:
136	res->howto = &x86_64_howto_table[1];
137	return TRUE;
138	case 3:
139	res->howto = &x86_64_howto_table[0];
140	return TRUE;
141	default:
142	return FALSE;
143	}
144	case BFD_MACH_O_X86_64_RELOC_SIGNED:
145	if (reloc->r_length == 2 && reloc->r_pcrel)
146	{
147	res->howto = &x86_64_howto_table[2];
148	return TRUE;
149	}
150	break;
151	case BFD_MACH_O_X86_64_RELOC_BRANCH:
152	if (!reloc->r_pcrel)
153	return FALSE;
154	switch (reloc->r_length)
155	{
156	case 2:
157	res->howto = &x86_64_howto_table[6];
158	return TRUE;
159	default:
160	return FALSE;
161	}
162	break;
163	case BFD_MACH_O_X86_64_RELOC_GOT_LOAD:
164	if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern)
165	{
166	res->howto = &x86_64_howto_table[7];
167	return TRUE;
168	}
169	break;
170	case BFD_MACH_O_X86_64_RELOC_GOT:
171	if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern)
172	{
173	res->howto = &x86_64_howto_table[10];
174	return TRUE;
175	}
176	break;
177	case BFD_MACH_O_X86_64_RELOC_SUBTRACTOR:
178	if (reloc->r_pcrel)
179	return FALSE;
180	switch (reloc->r_length)
181	{
182	case 2:
183	res->howto = &x86_64_howto_table[8];
184	return TRUE;
185	case 3:
186	res->howto = &x86_64_howto_table[9];
187	return TRUE;
188	default:
189	return FALSE;
190	}
191	break;
192	case BFD_MACH_O_X86_64_RELOC_SIGNED_1:
193	if (reloc->r_length == 2 && reloc->r_pcrel)
194	{
195	res->howto = &x86_64_howto_table[3];
196	return TRUE;
197	}
198	break;
199	case BFD_MACH_O_X86_64_RELOC_SIGNED_2:
200	if (reloc->r_length == 2 && reloc->r_pcrel)
201	{
202	res->howto = &x86_64_howto_table[4];
203	return TRUE;
204	}
205	break;
206	case BFD_MACH_O_X86_64_RELOC_SIGNED_4:
207	if (reloc->r_length == 2 && reloc->r_pcrel)
208	{
209	res->howto = &x86_64_howto_table[5];
210	return TRUE;
211	}
212	break;
213	default:
214	return FALSE;
215	}
216	return FALSE;
217	}
218
219	static bfd_boolean
220	bfd_mach_o_x86_64_swap_reloc_out (arelent rel, bfd_mach_o_reloc_info rinfo)
221	{
222	rinfo->r_address = rel->address;
223	switch (rel->howto->type)
224	{
225	case BFD_RELOC_64:
226	rinfo->r_scattered = 0;
227	rinfo->r_type = BFD_MACH_O_X86_64_RELOC_UNSIGNED;
228	rinfo->r_pcrel = 0;
229	rinfo->r_length = rel->howto->size; /* Correct in practice. */
230	if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
231	{
232	rinfo->r_extern = 0;
233	rinfo->r_value = (*rel->sym_ptr_ptr)->section->target_index;
234	}
235	else
236	{
237	rinfo->r_extern = 1;
238	rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i;
239	}
240	break;
241	default:
242	return FALSE;
243	}
244	return TRUE;
245	}
246
247	static reloc_howto_type *
248	bfd_mach_o_x86_64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
249	bfd_reloc_code_real_type code)
250	{
251	unsigned int i;
252
253	for (i = 0;
254	i < sizeof (x86_64_howto_table) / sizeof (*x86_64_howto_table);
255	i++)
256	if (code == x86_64_howto_table[i].type)
257	return &x86_64_howto_table[i];
258	return NULL;
259	}
260
261	static reloc_howto_type *
262	bfd_mach_o_x86_64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
263	const char *name ATTRIBUTE_UNUSED)
264	{
265	return NULL;
266	}
267
268	#define bfd_mach_o_swap_reloc_in bfd_mach_o_x86_64_swap_reloc_in
269	#define bfd_mach_o_swap_reloc_out bfd_mach_o_x86_64_swap_reloc_out
270
271	#define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_x86_64_bfd_reloc_type_lookup
272	#define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_x86_64_bfd_reloc_name_lookup
273	#define bfd_mach_o_print_thread NULL
274
275	#define TARGET_NAME mach_o_x86_64_vec
276	#define TARGET_STRING "mach-o-x86-64"
277	#define TARGET_ARCHITECTURE bfd_arch_i386
278	#define TARGET_BIG_ENDIAN 0
279	#define TARGET_ARCHIVE 0
280	#include "mach-o-target.c"