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154a1ee5 | 1 | /* Intel i386 Mach-O support for BFD. |
4b95cf5c | 2 | Copyright (C) 2009-2014 Free Software Foundation, Inc. |
154a1ee5 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/reloc.h" |
154a1ee5 TG |
27 | |
28 | #define bfd_mach_o_object_p bfd_mach_o_i386_object_p | |
29 | #define bfd_mach_o_core_p bfd_mach_o_i386_core_p | |
30 | #define bfd_mach_o_mkobject bfd_mach_o_i386_mkobject | |
31 | ||
32 | static const bfd_target * | |
33 | bfd_mach_o_i386_object_p (bfd *abfd) | |
34 | { | |
35 | return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_CPU_TYPE_I386); | |
36 | } | |
37 | ||
38 | static const bfd_target * | |
39 | bfd_mach_o_i386_core_p (bfd *abfd) | |
40 | { | |
41 | return bfd_mach_o_header_p (abfd, | |
42 | BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_I386); | |
43 | } | |
44 | ||
45 | static bfd_boolean | |
46 | bfd_mach_o_i386_mkobject (bfd *abfd) | |
47 | { | |
48 | bfd_mach_o_data_struct *mdata; | |
49 | ||
50 | if (!bfd_mach_o_mkobject_init (abfd)) | |
51 | return FALSE; | |
52 | ||
046b007d | 53 | mdata = bfd_mach_o_get_data (abfd); |
154a1ee5 TG |
54 | mdata->header.magic = BFD_MACH_O_MH_MAGIC; |
55 | mdata->header.cputype = BFD_MACH_O_CPU_TYPE_I386; | |
56 | mdata->header.cpusubtype = BFD_MACH_O_CPU_SUBTYPE_X86_ALL; | |
154a1ee5 TG |
57 | mdata->header.byteorder = BFD_ENDIAN_LITTLE; |
58 | mdata->header.version = 1; | |
59 | ||
60 | return TRUE; | |
61 | } | |
62 | ||
92bc0e80 TG |
63 | static reloc_howto_type i386_howto_table[]= |
64 | { | |
e1e81ed3 | 65 | /* 0 */ |
92bc0e80 TG |
66 | HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0, |
67 | complain_overflow_bitfield, | |
68 | NULL, "32", | |
69 | FALSE, 0xffffffff, 0xffffffff, FALSE), | |
70 | HOWTO(BFD_RELOC_16, 0, 1, 16, FALSE, 0, | |
71 | complain_overflow_bitfield, | |
72 | NULL, "16", | |
73 | FALSE, 0xffff, 0xffff, FALSE), | |
74 | HOWTO(BFD_RELOC_8, 0, 0, 8, FALSE, 0, | |
75 | complain_overflow_bitfield, | |
76 | NULL, "8", | |
77 | FALSE, 0xff, 0xff, FALSE), | |
78 | HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0, | |
79 | complain_overflow_bitfield, | |
80 | NULL, "DISP32", | |
81 | FALSE, 0xffffffff, 0xffffffff, TRUE), | |
e1e81ed3 | 82 | /* 4 */ |
92bc0e80 TG |
83 | HOWTO(BFD_RELOC_16_PCREL, 0, 1, 16, TRUE, 0, |
84 | complain_overflow_bitfield, | |
85 | NULL, "DISP16", | |
86 | FALSE, 0xffff, 0xffff, TRUE), | |
87 | HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 2, 32, FALSE, 0, | |
88 | complain_overflow_bitfield, | |
89 | NULL, "SECTDIFF_32", | |
90 | FALSE, 0xffffffff, 0xffffffff, FALSE), | |
e1e81ed3 IS |
91 | HOWTO(BFD_RELOC_MACH_O_LOCAL_SECTDIFF, 0, 2, 32, FALSE, 0, |
92 | complain_overflow_bitfield, | |
93 | NULL, "LSECTDIFF_32", | |
94 | FALSE, 0xffffffff, 0xffffffff, FALSE), | |
92bc0e80 TG |
95 | HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 2, 32, FALSE, 0, |
96 | complain_overflow_bitfield, | |
97 | NULL, "PAIR_32", | |
98 | FALSE, 0xffffffff, 0xffffffff, FALSE), | |
6639d37a IS |
99 | /* 8 */ |
100 | HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 1, 16, FALSE, 0, | |
101 | complain_overflow_bitfield, | |
102 | NULL, "SECTDIFF_16", | |
103 | FALSE, 0xffff, 0xffff, FALSE), | |
104 | HOWTO(BFD_RELOC_MACH_O_LOCAL_SECTDIFF, 0, 1, 16, FALSE, 0, | |
105 | complain_overflow_bitfield, | |
106 | NULL, "LSECTDIFF_16", | |
107 | FALSE, 0xffff, 0xffff, FALSE), | |
108 | HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 1, 16, FALSE, 0, | |
109 | complain_overflow_bitfield, | |
110 | NULL, "PAIR_16", | |
111 | FALSE, 0xffff, 0xffff, FALSE), | |
92bc0e80 TG |
112 | }; |
113 | ||
114 | static bfd_boolean | |
115 | bfd_mach_o_i386_swap_reloc_in (arelent *res, bfd_mach_o_reloc_info *reloc) | |
116 | { | |
117 | if (reloc->r_scattered) | |
118 | { | |
119 | switch (reloc->r_type) | |
120 | { | |
121 | case BFD_MACH_O_GENERIC_RELOC_PAIR: | |
6639d37a IS |
122 | if (reloc->r_length == 2) |
123 | { | |
124 | res->howto = &i386_howto_table[7]; | |
125 | res->address = res[-1].address; | |
126 | return TRUE; | |
127 | } | |
128 | else if (reloc->r_length == 1) | |
129 | { | |
130 | res->howto = &i386_howto_table[10]; | |
131 | res->address = res[-1].address; | |
132 | return TRUE; | |
133 | } | |
134 | return FALSE; | |
92bc0e80 | 135 | case BFD_MACH_O_GENERIC_RELOC_SECTDIFF: |
6639d37a IS |
136 | if (reloc->r_length == 2) |
137 | { | |
138 | res->howto = &i386_howto_table[5]; | |
139 | return TRUE; | |
140 | } | |
141 | else if (reloc->r_length == 1) | |
142 | { | |
143 | res->howto = &i386_howto_table[8]; | |
144 | return TRUE; | |
145 | } | |
146 | return FALSE; | |
e1e81ed3 | 147 | case BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF: |
6639d37a IS |
148 | if (reloc->r_length == 2) |
149 | { | |
150 | res->howto = &i386_howto_table[6]; | |
151 | return TRUE; | |
152 | } | |
153 | else if (reloc->r_length == 1) | |
154 | { | |
155 | res->howto = &i386_howto_table[9]; | |
156 | return TRUE; | |
157 | } | |
158 | return FALSE; | |
92bc0e80 TG |
159 | default: |
160 | return FALSE; | |
161 | } | |
162 | } | |
163 | else | |
164 | { | |
165 | switch (reloc->r_type) | |
166 | { | |
167 | case BFD_MACH_O_GENERIC_RELOC_VANILLA: | |
168 | switch ((reloc->r_length << 1) | reloc->r_pcrel) | |
169 | { | |
170 | case 0: /* len = 0, pcrel = 0 */ | |
171 | res->howto = &i386_howto_table[2]; | |
172 | return TRUE; | |
173 | case 2: /* len = 1, pcrel = 0 */ | |
174 | res->howto = &i386_howto_table[1]; | |
175 | return TRUE; | |
176 | case 3: /* len = 1, pcrel = 1 */ | |
177 | res->howto = &i386_howto_table[4]; | |
178 | return TRUE; | |
179 | case 4: /* len = 2, pcrel = 0 */ | |
180 | res->howto = &i386_howto_table[0]; | |
181 | return TRUE; | |
182 | case 5: /* len = 2, pcrel = 1 */ | |
183 | res->howto = &i386_howto_table[3]; | |
184 | return TRUE; | |
185 | default: | |
186 | return FALSE; | |
187 | } | |
188 | break; | |
189 | default: | |
190 | return FALSE; | |
191 | } | |
192 | } | |
193 | } | |
194 | ||
195 | static bfd_boolean | |
196 | bfd_mach_o_i386_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo) | |
197 | { | |
198 | rinfo->r_address = rel->address; | |
199 | switch (rel->howto->type) | |
200 | { | |
201 | case BFD_RELOC_32: | |
202 | case BFD_RELOC_32_PCREL: | |
203 | case BFD_RELOC_16: | |
204 | case BFD_RELOC_16_PCREL: | |
205 | case BFD_RELOC_8: | |
206 | rinfo->r_scattered = 0; | |
207 | rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_VANILLA; | |
208 | rinfo->r_pcrel = rel->howto->pc_relative; | |
209 | rinfo->r_length = rel->howto->size; /* Correct in practice. */ | |
210 | if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM) | |
211 | { | |
212 | rinfo->r_extern = 0; | |
213 | rinfo->r_value = (*rel->sym_ptr_ptr)->section->target_index; | |
214 | } | |
215 | else | |
216 | { | |
217 | rinfo->r_extern = 1; | |
218 | rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i; | |
219 | } | |
220 | break; | |
221 | case BFD_RELOC_MACH_O_SECTDIFF: | |
222 | rinfo->r_scattered = 1; | |
223 | rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_SECTDIFF; | |
224 | rinfo->r_pcrel = 0; | |
6639d37a | 225 | rinfo->r_length = rel->howto->size; |
92bc0e80 | 226 | rinfo->r_extern = 0; |
6639d37a | 227 | rinfo->r_value = rel->addend; |
92bc0e80 | 228 | break; |
e1e81ed3 IS |
229 | case BFD_RELOC_MACH_O_LOCAL_SECTDIFF: |
230 | rinfo->r_scattered = 1; | |
231 | rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF; | |
232 | rinfo->r_pcrel = 0; | |
6639d37a | 233 | rinfo->r_length = rel->howto->size; |
e1e81ed3 | 234 | rinfo->r_extern = 0; |
6639d37a | 235 | rinfo->r_value = rel->addend; |
e1e81ed3 | 236 | break; |
92bc0e80 TG |
237 | case BFD_RELOC_MACH_O_PAIR: |
238 | rinfo->r_address = 0; | |
239 | rinfo->r_scattered = 1; | |
240 | rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_PAIR; | |
241 | rinfo->r_pcrel = 0; | |
6639d37a | 242 | rinfo->r_length = rel->howto->size; |
92bc0e80 | 243 | rinfo->r_extern = 0; |
6639d37a | 244 | rinfo->r_value = rel->addend; |
92bc0e80 TG |
245 | break; |
246 | default: | |
247 | return FALSE; | |
248 | } | |
249 | return TRUE; | |
250 | } | |
251 | ||
252 | static reloc_howto_type * | |
253 | bfd_mach_o_i386_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
254 | bfd_reloc_code_real_type code) | |
255 | { | |
256 | unsigned int i; | |
257 | ||
258 | for (i = 0; i < sizeof (i386_howto_table) / sizeof (*i386_howto_table); i++) | |
259 | if (code == i386_howto_table[i].type) | |
260 | return &i386_howto_table[i]; | |
261 | return NULL; | |
262 | } | |
263 | ||
264 | static reloc_howto_type * | |
265 | bfd_mach_o_i386_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
266 | const char *name ATTRIBUTE_UNUSED) | |
267 | { | |
268 | return NULL; | |
269 | } | |
270 | ||
b32e07d7 TG |
271 | static bfd_boolean |
272 | bfd_mach_o_i386_print_thread (bfd *abfd, bfd_mach_o_thread_flavour *thread, | |
273 | void *vfile, char *buf) | |
274 | { | |
275 | FILE *file = (FILE *)vfile; | |
276 | ||
277 | switch (thread->flavour) | |
278 | { | |
279 | case BFD_MACH_O_x86_THREAD_STATE: | |
280 | if (thread->size < (8 + 16 * 4)) | |
281 | return FALSE; | |
282 | fprintf (file, " x86_THREAD_STATE:\n"); | |
283 | fprintf (file, " flavor: 0x%08lx count: 0x%08lx\n", | |
284 | (unsigned long)bfd_get_32 (abfd, buf + 0), | |
285 | (unsigned long)bfd_get_32 (abfd, buf + 4)); | |
286 | fprintf (file, " eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n", | |
287 | (unsigned long)bfd_get_32 (abfd, buf + 8), | |
288 | (unsigned long)bfd_get_32 (abfd, buf + 12), | |
289 | (unsigned long)bfd_get_32 (abfd, buf + 16), | |
290 | (unsigned long)bfd_get_32 (abfd, buf + 20)); | |
291 | fprintf (file, " edi: %08lx esi: %08lx ebp: %08lx esp: %08lx\n", | |
292 | (unsigned long)bfd_get_32 (abfd, buf + 24), | |
293 | (unsigned long)bfd_get_32 (abfd, buf + 28), | |
294 | (unsigned long)bfd_get_32 (abfd, buf + 32), | |
295 | (unsigned long)bfd_get_32 (abfd, buf + 36)); | |
296 | fprintf (file, " ss: %08lx flg: %08lx eip: %08lx cs: %08lx\n", | |
297 | (unsigned long)bfd_get_32 (abfd, buf + 40), | |
298 | (unsigned long)bfd_get_32 (abfd, buf + 44), | |
299 | (unsigned long)bfd_get_32 (abfd, buf + 48), | |
300 | (unsigned long)bfd_get_32 (abfd, buf + 52)); | |
301 | fprintf (file, " ds: %08lx es: %08lx fs: %08lx gs: %08lx\n", | |
302 | (unsigned long)bfd_get_32 (abfd, buf + 56), | |
303 | (unsigned long)bfd_get_32 (abfd, buf + 60), | |
304 | (unsigned long)bfd_get_32 (abfd, buf + 64), | |
305 | (unsigned long)bfd_get_32 (abfd, buf + 68)); | |
306 | return TRUE; | |
307 | case BFD_MACH_O_x86_FLOAT_STATE: | |
308 | if (thread->size < 8) | |
309 | return FALSE; | |
310 | fprintf (file, " x86_FLOAT_STATE:\n"); | |
311 | fprintf (file, " flavor: 0x%08lx count: 0x%08lx\n", | |
312 | (unsigned long)bfd_get_32 (abfd, buf + 0), | |
313 | (unsigned long)bfd_get_32 (abfd, buf + 4)); | |
314 | return TRUE; | |
315 | case BFD_MACH_O_x86_EXCEPTION_STATE: | |
316 | if (thread->size < 8 + 3 * 4) | |
317 | return FALSE; | |
318 | fprintf (file, " x86_EXCEPTION_STATE:\n"); | |
319 | fprintf (file, " flavor: 0x%08lx count: 0x%08lx\n", | |
320 | (unsigned long)bfd_get_32 (abfd, buf + 0), | |
321 | (unsigned long)bfd_get_32 (abfd, buf + 4)); | |
322 | fprintf (file, " trapno: %08lx err: %08lx faultaddr: %08lx\n", | |
323 | (unsigned long)bfd_get_32 (abfd, buf + 8), | |
324 | (unsigned long)bfd_get_32 (abfd, buf + 12), | |
325 | (unsigned long)bfd_get_32 (abfd, buf + 16)); | |
326 | return TRUE; | |
327 | default: | |
328 | break; | |
329 | } | |
330 | return FALSE; | |
331 | } | |
332 | ||
a4551119 TG |
333 | static const mach_o_section_name_xlat text_section_names_xlat[] = |
334 | { | |
335 | { ".symbol_stub", "__symbol_stub", | |
632039e0 | 336 | SEC_CODE | SEC_LOAD, BFD_MACH_O_S_SYMBOL_STUBS, |
a4551119 TG |
337 | BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, |
338 | 0}, | |
339 | { ".picsymbol_stub", "__picsymbol_stub", | |
632039e0 | 340 | SEC_CODE | SEC_LOAD, BFD_MACH_O_S_SYMBOL_STUBS, |
a4551119 TG |
341 | BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, |
342 | 0}, | |
343 | { NULL, NULL, 0, 0, 0, 0} | |
344 | }; | |
345 | ||
346 | static const mach_o_section_name_xlat data_section_names_xlat[] = | |
347 | { | |
348 | /* The first two are recognized by i386, but not emitted for x86 by | |
349 | modern GCC. */ | |
350 | { ".non_lazy_symbol_pointer", "__nl_symbol_ptr", | |
351 | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS, | |
352 | BFD_MACH_O_S_ATTR_NONE, 2}, | |
353 | { ".lazy_symbol_pointer", "__la_symbol_ptr", | |
354 | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LAZY_SYMBOL_POINTERS, | |
355 | BFD_MACH_O_S_ATTR_NONE, 2}, | |
356 | { ".lazy_symbol_pointer2", "__la_sym_ptr2", | |
357 | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LAZY_SYMBOL_POINTERS, | |
358 | BFD_MACH_O_S_ATTR_NONE, 2}, | |
359 | { ".lazy_symbol_pointer3", "__la_sym_ptr3", | |
360 | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_LAZY_SYMBOL_POINTERS, | |
361 | BFD_MACH_O_S_ATTR_NONE, 2}, | |
362 | { NULL, NULL, 0, 0, 0, 0} | |
363 | }; | |
364 | ||
365 | static const mach_o_section_name_xlat import_section_names_xlat[] = | |
366 | { | |
367 | { ".picsymbol_stub3", "__jump_table", | |
632039e0 | 368 | SEC_CODE | SEC_LOAD, BFD_MACH_O_S_SYMBOL_STUBS, |
68ffbac6 | 369 | BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS |
a4551119 TG |
370 | | BFD_MACH_O_S_SELF_MODIFYING_CODE, |
371 | 6}, | |
372 | { ".non_lazy_symbol_pointer_x86", "__pointers", | |
373 | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS, | |
374 | BFD_MACH_O_S_ATTR_NONE, 2}, | |
375 | { NULL, NULL, 0, 0, 0, 0} | |
376 | }; | |
377 | ||
378 | const mach_o_segment_name_xlat mach_o_i386_segsec_names_xlat[] = | |
379 | { | |
380 | { "__TEXT", text_section_names_xlat }, | |
381 | { "__DATA", data_section_names_xlat }, | |
382 | { "__IMPORT", import_section_names_xlat }, | |
383 | { NULL, NULL } | |
384 | }; | |
385 | ||
92bc0e80 TG |
386 | #define bfd_mach_o_swap_reloc_in bfd_mach_o_i386_swap_reloc_in |
387 | #define bfd_mach_o_swap_reloc_out bfd_mach_o_i386_swap_reloc_out | |
b32e07d7 | 388 | #define bfd_mach_o_print_thread bfd_mach_o_i386_print_thread |
92bc0e80 | 389 | |
a4551119 | 390 | #define bfd_mach_o_tgt_seg_table mach_o_i386_segsec_names_xlat |
ab76eeaf | 391 | #define bfd_mach_o_section_type_valid_for_tgt NULL |
a4551119 | 392 | |
68ffbac6 | 393 | #define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_i386_bfd_reloc_type_lookup |
92bc0e80 TG |
394 | #define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_i386_bfd_reloc_name_lookup |
395 | ||
154a1ee5 TG |
396 | #define TARGET_NAME mach_o_i386_vec |
397 | #define TARGET_STRING "mach-o-i386" | |
42fa0891 | 398 | #define TARGET_ARCHITECTURE bfd_arch_i386 |
154a1ee5 TG |
399 | #define TARGET_BIG_ENDIAN 0 |
400 | #define TARGET_ARCHIVE 0 | |
b93a1992 | 401 | #define TARGET_PRIORITY 0 |
154a1ee5 | 402 | #include "mach-o-target.c" |