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[binutils.git] / bfd / mach-o-x86-64.c
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1 /* Intel x86-64 Mach-O support for BFD.
2 Copyright 2010
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
22 #include "sysdep.h"
23 #include "mach-o.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26 #include "libiberty.h"
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
32 static const bfd_target *
33 bfd_mach_o_x86_64_object_p (bfd *abfd)
35 return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_CPU_TYPE_X86_64);
38 static const bfd_target *
39 bfd_mach_o_x86_64_core_p (bfd *abfd)
41 return bfd_mach_o_header_p (abfd,
42 BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_X86_64);
45 static bfd_boolean
46 bfd_mach_o_x86_64_mkobject (bfd *abfd)
48 bfd_mach_o_data_struct *mdata;
50 if (!bfd_mach_o_mkobject_init (abfd))
51 return FALSE;
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;
60 return TRUE;
63 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
64 #define MINUS_ONE (~ (bfd_vma) 0)
66 static reloc_howto_type x86_64_howto_table[]=
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),
121 static bfd_boolean
122 bfd_mach_o_x86_64_swap_reloc_in (arelent *res, bfd_mach_o_reloc_info *reloc)
124 /* On x86-64, scattered relocs are not used. */
125 if (reloc->r_scattered)
126 return FALSE;
128 switch (reloc->r_type)
130 case BFD_MACH_O_X86_64_RELOC_UNSIGNED:
131 if (reloc->r_pcrel)
132 return FALSE;
133 switch (reloc->r_length)
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;
144 case BFD_MACH_O_X86_64_RELOC_SIGNED:
145 if (reloc->r_length == 2 && reloc->r_pcrel)
147 res->howto = &x86_64_howto_table[2];
148 return TRUE;
150 break;
151 case BFD_MACH_O_X86_64_RELOC_BRANCH:
152 if (!reloc->r_pcrel)
153 return FALSE;
154 switch (reloc->r_length)
156 case 2:
157 res->howto = &x86_64_howto_table[6];
158 return TRUE;
159 default:
160 return FALSE;
162 break;
163 case BFD_MACH_O_X86_64_RELOC_GOT_LOAD:
164 if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern)
166 res->howto = &x86_64_howto_table[7];
167 return TRUE;
169 break;
170 case BFD_MACH_O_X86_64_RELOC_GOT:
171 if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern)
173 res->howto = &x86_64_howto_table[10];
174 return TRUE;
176 break;
177 case BFD_MACH_O_X86_64_RELOC_SUBTRACTOR:
178 if (reloc->r_pcrel)
179 return FALSE;
180 switch (reloc->r_length)
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;
191 break;
192 case BFD_MACH_O_X86_64_RELOC_SIGNED_1:
193 if (reloc->r_length == 2 && reloc->r_pcrel)
195 res->howto = &x86_64_howto_table[3];
196 return TRUE;
198 break;
199 case BFD_MACH_O_X86_64_RELOC_SIGNED_2:
200 if (reloc->r_length == 2 && reloc->r_pcrel)
202 res->howto = &x86_64_howto_table[4];
203 return TRUE;
205 break;
206 case BFD_MACH_O_X86_64_RELOC_SIGNED_4:
207 if (reloc->r_length == 2 && reloc->r_pcrel)
209 res->howto = &x86_64_howto_table[5];
210 return TRUE;
212 break;
213 default:
214 return FALSE;
216 return FALSE;
219 static bfd_boolean
220 bfd_mach_o_x86_64_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo)
222 rinfo->r_address = rel->address;
223 switch (rel->howto->type)
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)
232 rinfo->r_extern = 0;
233 rinfo->r_value = (*rel->sym_ptr_ptr)->section->target_index;
235 else
237 rinfo->r_extern = 1;
238 rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i;
240 break;
241 default:
242 return FALSE;
244 return TRUE;
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)
251 unsigned int i;
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;
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)
265 return NULL;
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
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
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"