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618b7301 | 1 | /* Intel x86-64 Mach-O support for BFD. |
b90efa5b | 2 | Copyright (C) 2010-2015 Free Software Foundation, Inc. |
618b7301 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" | |
46d1c23b | 26 | #include "mach-o/x86-64.h" |
618b7301 TG |
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 | 55 | mdata->header.cputype = BFD_MACH_O_CPU_TYPE_X86_64; |
12241a34 TG |
56 | mdata->header.cpusubtype = |
57 | BFD_MACH_O_CPU_SUBTYPE_X86_ALL | BFD_MACH_O_CPU_SUBTYPE_LIB64; | |
618b7301 | 58 | mdata->header.byteorder = BFD_ENDIAN_LITTLE; |
fde33808 | 59 | mdata->header.version = 2; |
618b7301 TG |
60 | |
61 | return TRUE; | |
62 | } | |
63 | ||
64 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
65 | #define MINUS_ONE (~ (bfd_vma) 0) | |
66 | ||
67 | static reloc_howto_type x86_64_howto_table[]= | |
68 | { | |
69 | /* 0 */ | |
70 | HOWTO(BFD_RELOC_64, 0, 4, 64, FALSE, 0, | |
71 | complain_overflow_bitfield, | |
72 | NULL, "64", | |
73 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
74 | HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0, | |
75 | complain_overflow_bitfield, | |
76 | NULL, "32", | |
77 | FALSE, 0xffffffff, 0xffffffff, FALSE), | |
78 | HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0, | |
79 | complain_overflow_bitfield, | |
80 | NULL, "DISP32", | |
81 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
82 | HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_1, 0, 2, 32, TRUE, 0, | |
83 | complain_overflow_bitfield, | |
84 | NULL, "DISP32_1", | |
85 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
86 | /* 4 */ | |
87 | HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_2, 0, 2, 32, TRUE, 0, | |
88 | complain_overflow_bitfield, | |
89 | NULL, "DISP32_2", | |
90 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
91 | HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_4, 0, 2, 32, TRUE, 0, | |
92 | complain_overflow_bitfield, | |
93 | NULL, "DISP32_4", | |
94 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
95 | HOWTO(BFD_RELOC_MACH_O_X86_64_BRANCH32, 0, 2, 32, TRUE, 0, | |
96 | complain_overflow_bitfield, | |
97 | NULL, "BRANCH32", | |
98 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
99 | HOWTO(BFD_RELOC_MACH_O_X86_64_GOT_LOAD, 0, 2, 32, TRUE, 0, | |
100 | complain_overflow_bitfield, | |
101 | NULL, "GOT_LOAD", | |
102 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
103 | /* 8 */ | |
104 | HOWTO(BFD_RELOC_MACH_O_X86_64_SUBTRACTOR32, 0, 2, 32, FALSE, 0, | |
105 | complain_overflow_bitfield, | |
106 | NULL, "SUBTRACTOR32", | |
107 | FALSE, 0xffffffff, 0xffffffff, FALSE), | |
108 | HOWTO(BFD_RELOC_MACH_O_X86_64_SUBTRACTOR64, 0, 4, 64, FALSE, 0, | |
109 | complain_overflow_bitfield, | |
110 | NULL, "SUBTRACTOR64", | |
111 | FALSE, MINUS_ONE, MINUS_ONE, FALSE), | |
112 | HOWTO(BFD_RELOC_MACH_O_X86_64_GOT, 0, 2, 32, TRUE, 0, | |
113 | complain_overflow_bitfield, | |
114 | NULL, "GOT", | |
115 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
116 | HOWTO(BFD_RELOC_MACH_O_X86_64_BRANCH8, 0, 0, 8, TRUE, 0, | |
117 | complain_overflow_bitfield, | |
118 | NULL, "BRANCH8", | |
119 | FALSE, 0xff, 0xff, TRUE), | |
120 | }; | |
121 | ||
122 | static bfd_boolean | |
123 | bfd_mach_o_x86_64_swap_reloc_in (arelent *res, bfd_mach_o_reloc_info *reloc) | |
124 | { | |
125 | /* On x86-64, scattered relocs are not used. */ | |
126 | if (reloc->r_scattered) | |
127 | return FALSE; | |
128 | ||
129 | switch (reloc->r_type) | |
130 | { | |
131 | case BFD_MACH_O_X86_64_RELOC_UNSIGNED: | |
132 | if (reloc->r_pcrel) | |
133 | return FALSE; | |
134 | switch (reloc->r_length) | |
135 | { | |
136 | case 2: | |
137 | res->howto = &x86_64_howto_table[1]; | |
138 | return TRUE; | |
139 | case 3: | |
140 | res->howto = &x86_64_howto_table[0]; | |
141 | return TRUE; | |
142 | default: | |
143 | return FALSE; | |
144 | } | |
145 | case BFD_MACH_O_X86_64_RELOC_SIGNED: | |
146 | if (reloc->r_length == 2 && reloc->r_pcrel) | |
147 | { | |
148 | res->howto = &x86_64_howto_table[2]; | |
149 | return TRUE; | |
150 | } | |
151 | break; | |
152 | case BFD_MACH_O_X86_64_RELOC_BRANCH: | |
153 | if (!reloc->r_pcrel) | |
154 | return FALSE; | |
155 | switch (reloc->r_length) | |
156 | { | |
157 | case 2: | |
158 | res->howto = &x86_64_howto_table[6]; | |
159 | return TRUE; | |
160 | default: | |
161 | return FALSE; | |
162 | } | |
163 | break; | |
164 | case BFD_MACH_O_X86_64_RELOC_GOT_LOAD: | |
165 | if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern) | |
166 | { | |
167 | res->howto = &x86_64_howto_table[7]; | |
168 | return TRUE; | |
169 | } | |
170 | break; | |
171 | case BFD_MACH_O_X86_64_RELOC_GOT: | |
172 | if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern) | |
173 | { | |
174 | res->howto = &x86_64_howto_table[10]; | |
175 | return TRUE; | |
176 | } | |
177 | break; | |
178 | case BFD_MACH_O_X86_64_RELOC_SUBTRACTOR: | |
179 | if (reloc->r_pcrel) | |
180 | return FALSE; | |
181 | switch (reloc->r_length) | |
182 | { | |
183 | case 2: | |
184 | res->howto = &x86_64_howto_table[8]; | |
185 | return TRUE; | |
186 | case 3: | |
187 | res->howto = &x86_64_howto_table[9]; | |
188 | return TRUE; | |
189 | default: | |
190 | return FALSE; | |
191 | } | |
192 | break; | |
193 | case BFD_MACH_O_X86_64_RELOC_SIGNED_1: | |
194 | if (reloc->r_length == 2 && reloc->r_pcrel) | |
195 | { | |
196 | res->howto = &x86_64_howto_table[3]; | |
197 | return TRUE; | |
198 | } | |
199 | break; | |
200 | case BFD_MACH_O_X86_64_RELOC_SIGNED_2: | |
201 | if (reloc->r_length == 2 && reloc->r_pcrel) | |
202 | { | |
203 | res->howto = &x86_64_howto_table[4]; | |
204 | return TRUE; | |
205 | } | |
206 | break; | |
207 | case BFD_MACH_O_X86_64_RELOC_SIGNED_4: | |
208 | if (reloc->r_length == 2 && reloc->r_pcrel) | |
209 | { | |
210 | res->howto = &x86_64_howto_table[5]; | |
211 | return TRUE; | |
212 | } | |
213 | break; | |
214 | default: | |
215 | return FALSE; | |
216 | } | |
217 | return FALSE; | |
218 | } | |
219 | ||
220 | static bfd_boolean | |
221 | bfd_mach_o_x86_64_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo) | |
222 | { | |
223 | rinfo->r_address = rel->address; | |
fde33808 | 224 | rinfo->r_scattered = 0; |
618b7301 TG |
225 | switch (rel->howto->type) |
226 | { | |
71141310 TG |
227 | case BFD_RELOC_32: |
228 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_UNSIGNED; | |
229 | rinfo->r_pcrel = 0; | |
230 | rinfo->r_length = 2; | |
231 | break; | |
618b7301 | 232 | case BFD_RELOC_64: |
618b7301 TG |
233 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_UNSIGNED; |
234 | rinfo->r_pcrel = 0; | |
fde33808 TG |
235 | rinfo->r_length = 3; |
236 | break; | |
237 | case BFD_RELOC_32_PCREL: | |
71141310 TG |
238 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SIGNED; |
239 | rinfo->r_pcrel = 1; | |
240 | rinfo->r_length = 2; | |
241 | break; | |
242 | case BFD_RELOC_MACH_O_X86_64_PCREL32_1: | |
243 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SIGNED_1; | |
244 | rinfo->r_pcrel = 1; | |
245 | rinfo->r_length = 2; | |
246 | break; | |
247 | case BFD_RELOC_MACH_O_X86_64_PCREL32_2: | |
248 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SIGNED_2; | |
249 | rinfo->r_pcrel = 1; | |
250 | rinfo->r_length = 2; | |
251 | break; | |
252 | case BFD_RELOC_MACH_O_X86_64_PCREL32_4: | |
253 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SIGNED_4; | |
254 | rinfo->r_pcrel = 1; | |
255 | rinfo->r_length = 2; | |
256 | break; | |
257 | case BFD_RELOC_MACH_O_X86_64_BRANCH32: | |
fde33808 TG |
258 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_BRANCH; |
259 | rinfo->r_pcrel = 1; | |
260 | rinfo->r_length = 2; | |
261 | break; | |
71141310 TG |
262 | case BFD_RELOC_MACH_O_X86_64_SUBTRACTOR32: |
263 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SUBTRACTOR; | |
264 | rinfo->r_pcrel = 0; | |
265 | rinfo->r_length = 2; | |
266 | break; | |
fde33808 TG |
267 | case BFD_RELOC_MACH_O_X86_64_SUBTRACTOR64: |
268 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_SUBTRACTOR; | |
269 | rinfo->r_pcrel = 0; | |
270 | rinfo->r_length = 3; | |
271 | break; | |
71141310 TG |
272 | case BFD_RELOC_MACH_O_X86_64_GOT: |
273 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_GOT; | |
274 | rinfo->r_pcrel = 1; | |
275 | rinfo->r_length = 2; | |
276 | break; | |
fde33808 TG |
277 | case BFD_RELOC_MACH_O_X86_64_GOT_LOAD: |
278 | rinfo->r_type = BFD_MACH_O_X86_64_RELOC_GOT_LOAD; | |
279 | rinfo->r_pcrel = 1; | |
280 | rinfo->r_length = 2; | |
618b7301 TG |
281 | break; |
282 | default: | |
283 | return FALSE; | |
284 | } | |
fde33808 TG |
285 | if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM) |
286 | { | |
287 | rinfo->r_extern = 0; | |
47c50932 TG |
288 | rinfo->r_value = |
289 | (*rel->sym_ptr_ptr)->section->output_section->target_index; | |
fde33808 TG |
290 | } |
291 | else | |
292 | { | |
293 | rinfo->r_extern = 1; | |
294 | rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i; | |
295 | } | |
618b7301 TG |
296 | return TRUE; |
297 | } | |
298 | ||
299 | static reloc_howto_type * | |
300 | bfd_mach_o_x86_64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
301 | bfd_reloc_code_real_type code) | |
302 | { | |
303 | unsigned int i; | |
304 | ||
305 | for (i = 0; | |
306 | i < sizeof (x86_64_howto_table) / sizeof (*x86_64_howto_table); | |
307 | i++) | |
308 | if (code == x86_64_howto_table[i].type) | |
309 | return &x86_64_howto_table[i]; | |
310 | return NULL; | |
311 | } | |
312 | ||
313 | static reloc_howto_type * | |
314 | bfd_mach_o_x86_64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
315 | const char *name ATTRIBUTE_UNUSED) | |
316 | { | |
317 | return NULL; | |
318 | } | |
319 | ||
ab76eeaf IS |
320 | static bfd_boolean |
321 | bfd_mach_o_section_type_valid_for_x86_64 (unsigned long val) | |
322 | { | |
323 | if (val == BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS | |
324 | || val == BFD_MACH_O_S_LAZY_SYMBOL_POINTERS | |
325 | || val == BFD_MACH_O_S_SYMBOL_STUBS) | |
326 | return FALSE; | |
327 | return TRUE; | |
328 | } | |
329 | ||
632039e0 IS |
330 | /* We want to bump the alignment of some sections. */ |
331 | static const mach_o_section_name_xlat text_section_names_xlat[] = | |
332 | { | |
333 | { ".eh_frame", "__eh_frame", | |
334 | SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_COALESCED, | |
335 | BFD_MACH_O_S_ATTR_LIVE_SUPPORT | |
336 | | BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS | |
337 | | BFD_MACH_O_S_ATTR_NO_TOC, 3}, | |
338 | { NULL, NULL, 0, 0, 0, 0} | |
339 | }; | |
340 | ||
341 | const mach_o_segment_name_xlat mach_o_x86_64_segsec_names_xlat[] = | |
342 | { | |
343 | { "__TEXT", text_section_names_xlat }, | |
344 | { NULL, NULL } | |
345 | }; | |
346 | ||
618b7301 TG |
347 | #define bfd_mach_o_swap_reloc_in bfd_mach_o_x86_64_swap_reloc_in |
348 | #define bfd_mach_o_swap_reloc_out bfd_mach_o_x86_64_swap_reloc_out | |
349 | ||
350 | #define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_x86_64_bfd_reloc_type_lookup | |
351 | #define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_x86_64_bfd_reloc_name_lookup | |
352 | #define bfd_mach_o_print_thread NULL | |
632039e0 | 353 | #define bfd_mach_o_tgt_seg_table mach_o_x86_64_segsec_names_xlat |
ab76eeaf | 354 | #define bfd_mach_o_section_type_valid_for_tgt bfd_mach_o_section_type_valid_for_x86_64 |
618b7301 | 355 | |
6d00b590 | 356 | #define TARGET_NAME x86_64_mach_o_vec |
618b7301 TG |
357 | #define TARGET_STRING "mach-o-x86-64" |
358 | #define TARGET_ARCHITECTURE bfd_arch_i386 | |
4384b284 | 359 | #define TARGET_PAGESIZE 4096 |
618b7301 TG |
360 | #define TARGET_BIG_ENDIAN 0 |
361 | #define TARGET_ARCHIVE 0 | |
b93a1992 | 362 | #define TARGET_PRIORITY 0 |
618b7301 | 363 | #include "mach-o-target.c" |