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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); | |
fde33808 | 54 | mdata->header.magic = BFD_MACH_O_MH_MAGIC_64; |
618b7301 TG |
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; | |
fde33808 | 58 | mdata->header.version = 2; |
618b7301 TG |
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; | |
fde33808 | 223 | rinfo->r_scattered = 0; |
618b7301 TG |
224 | switch (rel->howto->type) |
225 | { | |
226 | case BFD_RELOC_64: | |
618b7301 TG |
227 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_UNSIGNED; |
228 | rinfo->r_pcrel = 0; | |
fde33808 TG |
229 | rinfo->r_length = 3; |
230 | break; | |
231 | case BFD_RELOC_32_PCREL: | |
232 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_BRANCH; | |
233 | rinfo->r_pcrel = 1; | |
234 | rinfo->r_length = 2; | |
235 | break; | |
236 | case BFD_RELOC_MACH_O_X86_64_SUBTRACTOR64: | |
237 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SUBTRACTOR; | |
238 | rinfo->r_pcrel = 0; | |
239 | rinfo->r_length = 3; | |
240 | break; | |
241 | case BFD_RELOC_MACH_O_X86_64_GOT_LOAD: | |
242 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_GOT_LOAD; | |
243 | rinfo->r_pcrel = 1; | |
244 | rinfo->r_length = 2; | |
618b7301 TG |
245 | break; |
246 | default: | |
247 | return FALSE; | |
248 | } | |
fde33808 TG |
249 | if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM) |
250 | { | |
251 | rinfo->r_extern = 0; | |
252 | rinfo->r_value = (*rel->sym_ptr_ptr)->section->target_index; | |
253 | } | |
254 | else | |
255 | { | |
256 | rinfo->r_extern = 1; | |
257 | rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i; | |
258 | } | |
618b7301 TG |
259 | return TRUE; |
260 | } | |
261 | ||
262 | static reloc_howto_type * | |
263 | bfd_mach_o_x86_64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
264 | bfd_reloc_code_real_type code) | |
265 | { | |
266 | unsigned int i; | |
267 | ||
268 | for (i = 0; | |
269 | i < sizeof (x86_64_howto_table) / sizeof (*x86_64_howto_table); | |
270 | i++) | |
271 | if (code == x86_64_howto_table[i].type) | |
272 | return &x86_64_howto_table[i]; | |
273 | return NULL; | |
274 | } | |
275 | ||
276 | static reloc_howto_type * | |
277 | bfd_mach_o_x86_64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
278 | const char *name ATTRIBUTE_UNUSED) | |
279 | { | |
280 | return NULL; | |
281 | } | |
282 | ||
283 | #define bfd_mach_o_swap_reloc_in bfd_mach_o_x86_64_swap_reloc_in | |
284 | #define bfd_mach_o_swap_reloc_out bfd_mach_o_x86_64_swap_reloc_out | |
285 | ||
286 | #define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_x86_64_bfd_reloc_type_lookup | |
287 | #define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_x86_64_bfd_reloc_name_lookup | |
288 | #define bfd_mach_o_print_thread NULL | |
289 | ||
290 | #define TARGET_NAME mach_o_x86_64_vec | |
291 | #define TARGET_STRING "mach-o-x86-64" | |
292 | #define TARGET_ARCHITECTURE bfd_arch_i386 | |
293 | #define TARGET_BIG_ENDIAN 0 | |
294 | #define TARGET_ARCHIVE 0 | |
295 | #include "mach-o-target.c" |