Commit | Line | Data |
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3af9a47b | 1 | /* Mach-O support for BFD. |
1e8a024a | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2005, 2007, 2008 |
3af9a47b NC |
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 | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
3af9a47b NC |
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 | |
e84d6fca | 18 | along with this program; if not, write to the Free Software |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
3af9a47b NC |
21 | |
22 | #ifndef _BFD_MACH_O_H_ | |
23 | #define _BFD_MACH_O_H_ | |
24 | ||
25 | #include "bfd.h" | |
26 | ||
27 | #define BFD_MACH_O_N_STAB 0xe0 /* If any of these bits set, a symbolic debugging entry. */ | |
28 | #define BFD_MACH_O_N_PEXT 0x10 /* Private external symbol bit. */ | |
29 | #define BFD_MACH_O_N_TYPE 0x0e /* Mask for the type bits. */ | |
30 | #define BFD_MACH_O_N_EXT 0x01 /* External symbol bit, set for external symbols. */ | |
31 | #define BFD_MACH_O_N_UNDF 0x00 /* Undefined, n_sect == NO_SECT. */ | |
32 | #define BFD_MACH_O_N_ABS 0x02 /* Absolute, n_sect == NO_SECT. */ | |
3af9a47b | 33 | #define BFD_MACH_O_N_INDR 0x0a /* Indirect. */ |
15e1c58a TG |
34 | #define BFD_MACH_O_N_PBUD 0x0c /* Prebound undefined (defined in a dylib). */ |
35 | #define BFD_MACH_O_N_SECT 0x0e /* Defined in section number n_sect. */ | |
36 | ||
37 | #define BFD_MACH_O_NO_SECT 0 | |
38 | ||
39 | #define BFD_MACH_O_SYM_NTYPE(SYM) (((SYM)->udata.i >> 24) & 0xff) | |
40 | #define BFD_MACH_O_SYM_NSECT(SYM) (((SYM)->udata.i >> 16) & 0xff) | |
41 | #define BFD_MACH_O_SYM_NDESC(SYM) ((SYM)->udata.i & 0xffff) | |
3af9a47b NC |
42 | |
43 | typedef enum bfd_mach_o_ppc_thread_flavour | |
116c20d2 NC |
44 | { |
45 | BFD_MACH_O_PPC_THREAD_STATE = 1, | |
46 | BFD_MACH_O_PPC_FLOAT_STATE = 2, | |
47 | BFD_MACH_O_PPC_EXCEPTION_STATE = 3, | |
1e8a024a TG |
48 | BFD_MACH_O_PPC_VECTOR_STATE = 4, |
49 | BFD_MACH_O_PPC_THREAD_STATE_64 = 5 | |
116c20d2 | 50 | } |
3af9a47b NC |
51 | bfd_mach_o_ppc_thread_flavour; |
52 | ||
15e1c58a | 53 | /* Defined in <mach/i386/thread_status.h> */ |
3af9a47b | 54 | typedef enum bfd_mach_o_i386_thread_flavour |
116c20d2 | 55 | { |
15e1c58a TG |
56 | BFD_MACH_O_x86_THREAD_STATE32 = 1, |
57 | BFD_MACH_O_x86_FLOAT_STATE32 = 2, | |
58 | BFD_MACH_O_x86_EXCEPTION_STATE32 = 3, | |
1e8a024a TG |
59 | BFD_MACH_O_x86_THREAD_STATE64 = 4, |
60 | BFD_MACH_O_x86_FLOAT_STATE64 = 5, | |
61 | BFD_MACH_O_x86_EXCEPTION_STATE64 = 6, | |
62 | BFD_MACH_O_x86_THREAD_STATE = 7, | |
63 | BFD_MACH_O_x86_FLOAT_STATE = 8, | |
64 | BFD_MACH_O_x86_EXCEPTION_STATE = 9, | |
15e1c58a TG |
65 | BFD_MACH_O_x86_DEBUG_STATE32 = 10, |
66 | BFD_MACH_O_x86_DEBUG_STATE64 = 11, | |
67 | BFD_MACH_O_x86_DEBUG_STATE = 12, | |
68 | BFD_MACH_O_THREAD_STATE_NONE = 13 | |
116c20d2 | 69 | } |
3af9a47b NC |
70 | bfd_mach_o_i386_thread_flavour; |
71 | ||
72 | #define BFD_MACH_O_LC_REQ_DYLD 0x80000000 | |
73 | ||
74 | typedef enum bfd_mach_o_load_command_type | |
116c20d2 NC |
75 | { |
76 | BFD_MACH_O_LC_SEGMENT = 0x1, /* File segment to be mapped. */ | |
77 | BFD_MACH_O_LC_SYMTAB = 0x2, /* Link-edit stab symbol table info (obsolete). */ | |
78 | BFD_MACH_O_LC_SYMSEG = 0x3, /* Link-edit gdb symbol table info. */ | |
79 | BFD_MACH_O_LC_THREAD = 0x4, /* Thread. */ | |
80 | BFD_MACH_O_LC_UNIXTHREAD = 0x5, /* UNIX thread (includes a stack). */ | |
81 | BFD_MACH_O_LC_LOADFVMLIB = 0x6, /* Load a fixed VM shared library. */ | |
82 | BFD_MACH_O_LC_IDFVMLIB = 0x7, /* Fixed VM shared library id. */ | |
83 | BFD_MACH_O_LC_IDENT = 0x8, /* Object identification information (obsolete). */ | |
84 | BFD_MACH_O_LC_FVMFILE = 0x9, /* Fixed VM file inclusion. */ | |
85 | BFD_MACH_O_LC_PREPAGE = 0xa, /* Prepage command (internal use). */ | |
86 | BFD_MACH_O_LC_DYSYMTAB = 0xb, /* Dynamic link-edit symbol table info. */ | |
87 | BFD_MACH_O_LC_LOAD_DYLIB = 0xc, /* Load a dynamically linked shared library. */ | |
88 | BFD_MACH_O_LC_ID_DYLIB = 0xd, /* Dynamically linked shared lib identification. */ | |
89 | BFD_MACH_O_LC_LOAD_DYLINKER = 0xe, /* Load a dynamic linker. */ | |
90 | BFD_MACH_O_LC_ID_DYLINKER = 0xf, /* Dynamic linker identification. */ | |
91 | BFD_MACH_O_LC_PREBOUND_DYLIB = 0x10, /* Modules prebound for a dynamically. */ | |
92 | BFD_MACH_O_LC_ROUTINES = 0x11, /* Image routines. */ | |
93 | BFD_MACH_O_LC_SUB_FRAMEWORK = 0x12, /* Sub framework. */ | |
94 | BFD_MACH_O_LC_SUB_UMBRELLA = 0x13, /* Sub umbrella. */ | |
95 | BFD_MACH_O_LC_SUB_CLIENT = 0x14, /* Sub client. */ | |
96 | BFD_MACH_O_LC_SUB_LIBRARY = 0x15, /* Sub library. */ | |
97 | BFD_MACH_O_LC_TWOLEVEL_HINTS = 0x16, /* Two-level namespace lookup hints. */ | |
98 | BFD_MACH_O_LC_PREBIND_CKSUM = 0x17, /* Prebind checksum. */ | |
99 | /* Load a dynamically linked shared library that is allowed to be | |
3af9a47b | 100 | missing (weak). */ |
1e8a024a TG |
101 | BFD_MACH_O_LC_LOAD_WEAK_DYLIB = 0x18, |
102 | BFD_MACH_O_LC_SEGMENT_64 = 0x19, /* 64-bit segment of this file to be | |
103 | mapped. */ | |
15e1c58a TG |
104 | BFD_MACH_O_LC_ROUTINES_64 = 0x1a, /* Address of the dyld init routine |
105 | in a dylib. */ | |
106 | BFD_MACH_O_LC_UUID = 0x1b, /* 128-bit UUID of the executable. */ | |
107 | BFD_MACH_O_LC_RPATH = 0x1c, /* Run path addiions. */ | |
846b9259 TG |
108 | BFD_MACH_O_LC_CODE_SIGNATURE = 0x1d, /* Local of code signature. */ |
109 | BFD_MACH_O_LC_SEGMENT_SPLIT_INFO = 0x1e, /* Local of info to split seg. */ | |
110 | BFD_MACH_O_LC_REEXPORT_DYLIB = 0x1f, /* Load and re-export lib. */ | |
111 | BFD_MACH_O_LC_LAZY_LOAD_DYLIB = 0x20, /* Delay load of lib until use. */ | |
112 | BFD_MACH_O_LC_ENCRYPTION_INFO = 0x21 /* Encrypted segment info. */ | |
116c20d2 | 113 | } |
3af9a47b NC |
114 | bfd_mach_o_load_command_type; |
115 | ||
1e8a024a TG |
116 | #define BFD_MACH_O_CPU_IS64BIT 0x1000000 |
117 | ||
3af9a47b | 118 | typedef enum bfd_mach_o_cpu_type |
116c20d2 NC |
119 | { |
120 | BFD_MACH_O_CPU_TYPE_VAX = 1, | |
121 | BFD_MACH_O_CPU_TYPE_MC680x0 = 6, | |
122 | BFD_MACH_O_CPU_TYPE_I386 = 7, | |
123 | BFD_MACH_O_CPU_TYPE_MIPS = 8, | |
124 | BFD_MACH_O_CPU_TYPE_MC98000 = 10, | |
125 | BFD_MACH_O_CPU_TYPE_HPPA = 11, | |
126 | BFD_MACH_O_CPU_TYPE_ARM = 12, | |
127 | BFD_MACH_O_CPU_TYPE_MC88000 = 13, | |
128 | BFD_MACH_O_CPU_TYPE_SPARC = 14, | |
129 | BFD_MACH_O_CPU_TYPE_I860 = 15, | |
130 | BFD_MACH_O_CPU_TYPE_ALPHA = 16, | |
1e8a024a TG |
131 | BFD_MACH_O_CPU_TYPE_POWERPC = 18, |
132 | BFD_MACH_O_CPU_TYPE_POWERPC_64 = (BFD_MACH_O_CPU_TYPE_POWERPC | BFD_MACH_O_CPU_IS64BIT), | |
133 | BFD_MACH_O_CPU_TYPE_X86_64 = (BFD_MACH_O_CPU_TYPE_I386 | BFD_MACH_O_CPU_IS64BIT) | |
116c20d2 | 134 | } |
3af9a47b NC |
135 | bfd_mach_o_cpu_type; |
136 | ||
137 | typedef enum bfd_mach_o_filetype | |
116c20d2 NC |
138 | { |
139 | BFD_MACH_O_MH_OBJECT = 1, | |
140 | BFD_MACH_O_MH_EXECUTE = 2, | |
141 | BFD_MACH_O_MH_FVMLIB = 3, | |
142 | BFD_MACH_O_MH_CORE = 4, | |
143 | BFD_MACH_O_MH_PRELOAD = 5, | |
144 | BFD_MACH_O_MH_DYLIB = 6, | |
145 | BFD_MACH_O_MH_DYLINKER = 7, | |
146 | BFD_MACH_O_MH_BUNDLE = 8 | |
147 | } | |
3af9a47b NC |
148 | bfd_mach_o_filetype; |
149 | ||
150 | /* Constants for the type of a section. */ | |
151 | ||
152 | typedef enum bfd_mach_o_section_type | |
116c20d2 NC |
153 | { |
154 | /* Regular section. */ | |
155 | BFD_MACH_O_S_REGULAR = 0x0, | |
3af9a47b | 156 | |
116c20d2 NC |
157 | /* Zero fill on demand section. */ |
158 | BFD_MACH_O_S_ZEROFILL = 0x1, | |
3af9a47b | 159 | |
116c20d2 NC |
160 | /* Section with only literal C strings. */ |
161 | BFD_MACH_O_S_CSTRING_LITERALS = 0x2, | |
3af9a47b | 162 | |
116c20d2 NC |
163 | /* Section with only 4 byte literals. */ |
164 | BFD_MACH_O_S_4BYTE_LITERALS = 0x3, | |
3af9a47b | 165 | |
116c20d2 NC |
166 | /* Section with only 8 byte literals. */ |
167 | BFD_MACH_O_S_8BYTE_LITERALS = 0x4, | |
3af9a47b | 168 | |
116c20d2 NC |
169 | /* Section with only pointers to literals. */ |
170 | BFD_MACH_O_S_LITERAL_POINTERS = 0x5, | |
3af9a47b | 171 | |
116c20d2 NC |
172 | /* For the two types of symbol pointers sections and the symbol stubs |
173 | section they have indirect symbol table entries. For each of the | |
174 | entries in the section the indirect symbol table entries, in | |
175 | corresponding order in the indirect symbol table, start at the index | |
176 | stored in the reserved1 field of the section structure. Since the | |
177 | indirect symbol table entries correspond to the entries in the | |
178 | section the number of indirect symbol table entries is inferred from | |
179 | the size of the section divided by the size of the entries in the | |
180 | section. For symbol pointers sections the size of the entries in | |
181 | the section is 4 bytes and for symbol stubs sections the byte size | |
182 | of the stubs is stored in the reserved2 field of the section | |
183 | structure. */ | |
3af9a47b | 184 | |
116c20d2 NC |
185 | /* Section with only non-lazy symbol pointers. */ |
186 | BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS = 0x6, | |
e84d6fca | 187 | |
116c20d2 NC |
188 | /* Section with only lazy symbol pointers. */ |
189 | BFD_MACH_O_S_LAZY_SYMBOL_POINTERS = 0x7, | |
e84d6fca | 190 | |
116c20d2 NC |
191 | /* Section with only symbol stubs, byte size of stub in the reserved2 field. */ |
192 | BFD_MACH_O_S_SYMBOL_STUBS = 0x8, | |
e84d6fca | 193 | |
116c20d2 NC |
194 | /* Section with only function pointers for initialization. */ |
195 | BFD_MACH_O_S_MOD_INIT_FUNC_POINTERS = 0x9 | |
196 | } | |
3af9a47b NC |
197 | bfd_mach_o_section_type; |
198 | ||
15e1c58a TG |
199 | /* The flags field of a section structure is separated into two parts a section |
200 | type and section attributes. The section types are mutually exclusive (it | |
201 | can only have one type) but the section attributes are not (it may have more | |
202 | than one attribute). */ | |
203 | ||
204 | #define BFD_MACH_O_SECTION_TYPE_MASK 0x000000ff | |
205 | ||
206 | /* Constants for the section attributes part of the flags field of a section | |
207 | structure. */ | |
208 | #define BFD_MACH_O_SECTION_ATTRIBUTES_MASK 0xffffff00 | |
209 | /* System setable attributes. */ | |
210 | #define BFD_MACH_O_SECTION_ATTRIBUTES_SYS 0x00ffff00 | |
211 | /* User attributes. */ | |
212 | #define BFD_MACH_O_SECTION_ATTRIBUTES_USR 0xff000000 | |
213 | ||
214 | /* Section has local relocation entries. */ | |
215 | #define BFD_MACH_O_S_ATTR_LOC_RELOC 0x00000100 | |
216 | ||
217 | /* Section has external relocation entries. */ | |
218 | #define BFD_MACH_O_S_ATTR_EXT_RELOC 0x00000200 | |
219 | ||
220 | /* Section contains some machine instructions. */ | |
221 | #define BFD_MACH_O_S_ATTR_SOME_INSTRUCTIONS 0x00004000 | |
222 | ||
223 | #define BFD_MACH_O_S_ATTR_DEBUG 0x02000000 | |
224 | ||
225 | /* Section contains only true machine instructions. */ | |
226 | #define BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS 0x80000000 | |
227 | ||
3af9a47b NC |
228 | typedef unsigned long bfd_mach_o_cpu_subtype; |
229 | ||
230 | typedef struct bfd_mach_o_header | |
231 | { | |
232 | unsigned long magic; | |
233 | unsigned long cputype; | |
234 | unsigned long cpusubtype; | |
235 | unsigned long filetype; | |
236 | unsigned long ncmds; | |
237 | unsigned long sizeofcmds; | |
238 | unsigned long flags; | |
1e8a024a TG |
239 | unsigned int reserved; |
240 | /* Version 1: 32 bits, version 2: 64 bits. */ | |
241 | unsigned int version; | |
3af9a47b NC |
242 | enum bfd_endian byteorder; |
243 | } | |
244 | bfd_mach_o_header; | |
245 | ||
246 | typedef struct bfd_mach_o_section | |
247 | { | |
248 | asection *bfdsection; | |
249 | char sectname[16 + 1]; | |
250 | char segname[16 + 1]; | |
251 | bfd_vma addr; | |
252 | bfd_vma size; | |
253 | bfd_vma offset; | |
254 | unsigned long align; | |
255 | bfd_vma reloff; | |
256 | unsigned long nreloc; | |
257 | unsigned long flags; | |
258 | unsigned long reserved1; | |
259 | unsigned long reserved2; | |
1e8a024a | 260 | unsigned long reserved3; |
3af9a47b NC |
261 | } |
262 | bfd_mach_o_section; | |
263 | ||
264 | typedef struct bfd_mach_o_segment_command | |
265 | { | |
15e1c58a | 266 | char segname[16 + 1]; |
3af9a47b NC |
267 | bfd_vma vmaddr; |
268 | bfd_vma vmsize; | |
269 | bfd_vma fileoff; | |
270 | unsigned long filesize; | |
15e1c58a TG |
271 | unsigned long maxprot; /* Maximum permitted protection. */ |
272 | unsigned long initprot; /* Initial protection. */ | |
3af9a47b NC |
273 | unsigned long nsects; |
274 | unsigned long flags; | |
275 | bfd_mach_o_section *sections; | |
276 | asection *segment; | |
277 | } | |
278 | bfd_mach_o_segment_command; | |
279 | ||
15e1c58a TG |
280 | /* Protection flags. */ |
281 | #define BFD_MACH_O_PROT_READ 0x01 | |
282 | #define BFD_MACH_O_PROT_WRITE 0x02 | |
283 | #define BFD_MACH_O_PROT_EXECUTE 0x04 | |
284 | ||
3af9a47b NC |
285 | typedef struct bfd_mach_o_symtab_command |
286 | { | |
287 | unsigned long symoff; | |
288 | unsigned long nsyms; | |
289 | unsigned long stroff; | |
290 | unsigned long strsize; | |
291 | asymbol *symbols; | |
292 | char *strtab; | |
293 | asection *stabs_segment; | |
294 | asection *stabstr_segment; | |
295 | } | |
296 | bfd_mach_o_symtab_command; | |
297 | ||
298 | /* This is the second set of the symbolic information which is used to support | |
7dee875e | 299 | the data structures for the dynamically link editor. |
e84d6fca | 300 | |
3af9a47b NC |
301 | The original set of symbolic information in the symtab_command which contains |
302 | the symbol and string tables must also be present when this load command is | |
303 | present. When this load command is present the symbol table is organized | |
304 | into three groups of symbols: | |
305 | local symbols (static and debugging symbols) - grouped by module | |
306 | defined external symbols - grouped by module (sorted by name if not lib) | |
307 | undefined external symbols (sorted by name) | |
308 | In this load command there are offsets and counts to each of the three groups | |
309 | of symbols. | |
e84d6fca | 310 | |
3af9a47b NC |
311 | This load command contains a the offsets and sizes of the following new |
312 | symbolic information tables: | |
313 | table of contents | |
314 | module table | |
315 | reference symbol table | |
316 | indirect symbol table | |
317 | The first three tables above (the table of contents, module table and | |
7dee875e | 318 | reference symbol table) are only present if the file is a dynamically linked |
3af9a47b NC |
319 | shared library. For executable and object modules, which are files |
320 | containing only one module, the information that would be in these three | |
321 | tables is determined as follows: | |
322 | table of contents - the defined external symbols are sorted by name | |
323 | module table - the file contains only one module so everything in the | |
324 | file is part of the module. | |
325 | reference symbol table - is the defined and undefined external symbols | |
e84d6fca | 326 | |
7dee875e | 327 | For dynamically linked shared library files this load command also contains |
3af9a47b NC |
328 | offsets and sizes to the pool of relocation entries for all sections |
329 | separated into two groups: | |
330 | external relocation entries | |
331 | local relocation entries | |
332 | For executable and object modules the relocation entries continue to hang | |
333 | off the section structures. */ | |
334 | ||
335 | typedef struct bfd_mach_o_dysymtab_command | |
336 | { | |
337 | /* The symbols indicated by symoff and nsyms of the LC_SYMTAB load command | |
338 | are grouped into the following three groups: | |
339 | local symbols (further grouped by the module they are from) | |
340 | defined external symbols (further grouped by the module they are from) | |
341 | undefined symbols | |
e84d6fca | 342 | |
3af9a47b NC |
343 | The local symbols are used only for debugging. The dynamic binding |
344 | process may have to use them to indicate to the debugger the local | |
345 | symbols for a module that is being bound. | |
e84d6fca | 346 | |
3af9a47b NC |
347 | The last two groups are used by the dynamic binding process to do the |
348 | binding (indirectly through the module table and the reference symbol | |
7dee875e | 349 | table when this is a dynamically linked shared library file). */ |
3af9a47b NC |
350 | |
351 | unsigned long ilocalsym; /* Index to local symbols. */ | |
352 | unsigned long nlocalsym; /* Number of local symbols. */ | |
353 | unsigned long iextdefsym; /* Index to externally defined symbols. */ | |
354 | unsigned long nextdefsym; /* Number of externally defined symbols. */ | |
355 | unsigned long iundefsym; /* Index to undefined symbols. */ | |
356 | unsigned long nundefsym; /* Number of undefined symbols. */ | |
357 | ||
358 | /* For the for the dynamic binding process to find which module a symbol | |
359 | is defined in the table of contents is used (analogous to the ranlib | |
360 | structure in an archive) which maps defined external symbols to modules | |
7dee875e | 361 | they are defined in. This exists only in a dynamically linked shared |
3af9a47b NC |
362 | library file. For executable and object modules the defined external |
363 | symbols are sorted by name and is use as the table of contents. */ | |
364 | ||
365 | unsigned long tocoff; /* File offset to table of contents. */ | |
366 | unsigned long ntoc; /* Number of entries in table of contents. */ | |
367 | ||
368 | /* To support dynamic binding of "modules" (whole object files) the symbol | |
369 | table must reflect the modules that the file was created from. This is | |
370 | done by having a module table that has indexes and counts into the merged | |
371 | tables for each module. The module structure that these two entries | |
7dee875e | 372 | refer to is described below. This exists only in a dynamically linked |
3af9a47b NC |
373 | shared library file. For executable and object modules the file only |
374 | contains one module so everything in the file belongs to the module. */ | |
375 | ||
376 | unsigned long modtaboff; /* File offset to module table. */ | |
377 | unsigned long nmodtab; /* Number of module table entries. */ | |
378 | ||
379 | /* To support dynamic module binding the module structure for each module | |
380 | indicates the external references (defined and undefined) each module | |
381 | makes. For each module there is an offset and a count into the | |
382 | reference symbol table for the symbols that the module references. | |
7dee875e | 383 | This exists only in a dynamically linked shared library file. For |
3af9a47b NC |
384 | executable and object modules the defined external symbols and the |
385 | undefined external symbols indicates the external references. */ | |
386 | ||
387 | unsigned long extrefsymoff; /* Offset to referenced symbol table. */ | |
388 | unsigned long nextrefsyms; /* Number of referenced symbol table entries. */ | |
389 | ||
390 | /* The sections that contain "symbol pointers" and "routine stubs" have | |
391 | indexes and (implied counts based on the size of the section and fixed | |
392 | size of the entry) into the "indirect symbol" table for each pointer | |
393 | and stub. For every section of these two types the index into the | |
394 | indirect symbol table is stored in the section header in the field | |
395 | reserved1. An indirect symbol table entry is simply a 32bit index into | |
396 | the symbol table to the symbol that the pointer or stub is referring to. | |
397 | The indirect symbol table is ordered to match the entries in the section. */ | |
398 | ||
399 | unsigned long indirectsymoff; /* File offset to the indirect symbol table. */ | |
400 | unsigned long nindirectsyms; /* Number of indirect symbol table entries. */ | |
401 | ||
402 | /* To support relocating an individual module in a library file quickly the | |
403 | external relocation entries for each module in the library need to be | |
404 | accessed efficiently. Since the relocation entries can't be accessed | |
405 | through the section headers for a library file they are separated into | |
406 | groups of local and external entries further grouped by module. In this | |
407 | case the presents of this load command who's extreloff, nextrel, | |
408 | locreloff and nlocrel fields are non-zero indicates that the relocation | |
409 | entries of non-merged sections are not referenced through the section | |
410 | structures (and the reloff and nreloc fields in the section headers are | |
411 | set to zero). | |
412 | ||
413 | Since the relocation entries are not accessed through the section headers | |
414 | this requires the r_address field to be something other than a section | |
415 | offset to identify the item to be relocated. In this case r_address is | |
416 | set to the offset from the vmaddr of the first LC_SEGMENT command. | |
417 | ||
418 | The relocation entries are grouped by module and the module table | |
419 | entries have indexes and counts into them for the group of external | |
420 | relocation entries for that the module. | |
421 | ||
422 | For sections that are merged across modules there must not be any | |
423 | remaining external relocation entries for them (for merged sections | |
424 | remaining relocation entries must be local). */ | |
425 | ||
426 | unsigned long extreloff; /* Offset to external relocation entries. */ | |
427 | unsigned long nextrel; /* Number of external relocation entries. */ | |
428 | ||
429 | /* All the local relocation entries are grouped together (they are not | |
430 | grouped by their module since they are only used if the object is moved | |
7dee875e | 431 | from it statically link edited address). */ |
3af9a47b NC |
432 | |
433 | unsigned long locreloff; /* Offset to local relocation entries. */ | |
434 | unsigned long nlocrel; /* Number of local relocation entries. */ | |
435 | } | |
e84d6fca | 436 | bfd_mach_o_dysymtab_command; |
3af9a47b | 437 | |
e84d6fca | 438 | /* An indirect symbol table entry is simply a 32bit index into the symbol table |
3af9a47b | 439 | to the symbol that the pointer or stub is refering to. Unless it is for a |
e84d6fca | 440 | non-lazy symbol pointer section for a defined symbol which strip(1) as |
3af9a47b NC |
441 | removed. In which case it has the value INDIRECT_SYMBOL_LOCAL. If the |
442 | symbol was also absolute INDIRECT_SYMBOL_ABS is or'ed with that. */ | |
443 | ||
15e1c58a TG |
444 | #define BFD_MACH_O_INDIRECT_SYMBOL_LOCAL 0x80000000 |
445 | #define BFD_MACH_O_INDIRECT_SYMBOL_ABS 0x40000000 | |
3af9a47b NC |
446 | |
447 | typedef struct bfd_mach_o_thread_flavour | |
448 | { | |
449 | unsigned long flavour; | |
450 | bfd_vma offset; | |
451 | unsigned long size; | |
452 | } | |
453 | bfd_mach_o_thread_flavour; | |
454 | ||
455 | typedef struct bfd_mach_o_thread_command | |
456 | { | |
457 | unsigned long nflavours; | |
e84d6fca | 458 | bfd_mach_o_thread_flavour *flavours; |
3af9a47b NC |
459 | asection *section; |
460 | } | |
461 | bfd_mach_o_thread_command; | |
462 | ||
463 | typedef struct bfd_mach_o_dylinker_command | |
464 | { | |
846b9259 TG |
465 | unsigned long cmd; /* LC_ID_DYLINKER or LC_LOAD_DYLINKER. */ |
466 | unsigned long cmdsize; /* Includes pathname string. */ | |
467 | unsigned long name_offset; /* Offset to library's path name. */ | |
468 | unsigned long name_len; /* Offset to library's path name. */ | |
3af9a47b NC |
469 | asection *section; |
470 | } | |
471 | bfd_mach_o_dylinker_command; | |
472 | ||
473 | typedef struct bfd_mach_o_dylib_command | |
474 | { | |
475 | unsigned long cmd; /* LC_ID_DYLIB or LC_LOAD_DYLIB. */ | |
476 | unsigned long cmdsize; /* Includes pathname string. */ | |
477 | unsigned long name_offset; /* Offset to library's path name. */ | |
478 | unsigned long name_len; /* Offset to library's path name. */ | |
479 | unsigned long timestamp; /* Library's build time stamp. */ | |
480 | unsigned long current_version; /* Library's current version number. */ | |
481 | unsigned long compatibility_version; /* Library's compatibility vers number. */ | |
482 | asection *section; | |
483 | } | |
484 | bfd_mach_o_dylib_command; | |
485 | ||
486 | typedef struct bfd_mach_o_prebound_dylib_command | |
487 | { | |
488 | unsigned long cmd; /* LC_PREBOUND_DYLIB. */ | |
489 | unsigned long cmdsize; /* Includes strings. */ | |
490 | unsigned long name; /* Library's path name. */ | |
491 | unsigned long nmodules; /* Number of modules in library. */ | |
492 | unsigned long linked_modules; /* Bit vector of linked modules. */ | |
493 | asection *section; | |
494 | } | |
495 | bfd_mach_o_prebound_dylib_command; | |
496 | ||
15e1c58a TG |
497 | typedef struct bfd_mach_o_uuid_command |
498 | { | |
499 | unsigned long cmd; /* LC_PREBOUND_DYLIB. */ | |
500 | unsigned long cmdsize; /* Includes uuid. */ | |
501 | unsigned char uuid[16]; /* Uuid. */ | |
502 | asection *section; | |
503 | } | |
504 | bfd_mach_o_uuid_command; | |
505 | ||
3af9a47b NC |
506 | typedef struct bfd_mach_o_load_command |
507 | { | |
508 | bfd_mach_o_load_command_type type; | |
509 | unsigned int type_required; | |
510 | bfd_vma offset; | |
511 | bfd_vma len; | |
512 | union | |
513 | { | |
514 | bfd_mach_o_segment_command segment; | |
515 | bfd_mach_o_symtab_command symtab; | |
516 | bfd_mach_o_dysymtab_command dysymtab; | |
517 | bfd_mach_o_thread_command thread; | |
518 | bfd_mach_o_dylib_command dylib; | |
519 | bfd_mach_o_dylinker_command dylinker; | |
520 | bfd_mach_o_prebound_dylib_command prebound_dylib; | |
15e1c58a | 521 | bfd_mach_o_uuid_command uuid; |
3af9a47b NC |
522 | } |
523 | command; | |
524 | } | |
525 | bfd_mach_o_load_command; | |
526 | ||
527 | typedef struct mach_o_data_struct | |
528 | { | |
529 | bfd_mach_o_header header; | |
530 | bfd_mach_o_load_command *commands; | |
531 | unsigned long nsymbols; | |
532 | asymbol *symbols; | |
533 | unsigned long nsects; | |
534 | bfd_mach_o_section **sections; | |
535 | bfd *ibfd; | |
536 | } | |
537 | mach_o_data_struct; | |
538 | ||
15e1c58a TG |
539 | #define bfd_get_mach_o_data(abfd) ((abfd)->tdata.mach_o_data) |
540 | ||
3af9a47b NC |
541 | typedef struct mach_o_data_struct bfd_mach_o_data_struct; |
542 | ||
116c20d2 NC |
543 | bfd_boolean bfd_mach_o_valid (bfd *); |
544 | int bfd_mach_o_scan_read_symtab_symbol (bfd *, bfd_mach_o_symtab_command *, asymbol *, unsigned long); | |
545 | int bfd_mach_o_scan_read_symtab_strtab (bfd *, bfd_mach_o_symtab_command *); | |
546 | int bfd_mach_o_scan_read_symtab_symbols (bfd *, bfd_mach_o_symtab_command *); | |
547 | int bfd_mach_o_scan_read_dysymtab_symbol (bfd *, bfd_mach_o_dysymtab_command *, bfd_mach_o_symtab_command *, asymbol *, unsigned long); | |
548 | int bfd_mach_o_scan_start_address (bfd *); | |
549 | int bfd_mach_o_scan (bfd *, bfd_mach_o_header *, bfd_mach_o_data_struct *); | |
550 | bfd_boolean bfd_mach_o_mkobject (bfd *); | |
551 | const bfd_target * bfd_mach_o_object_p (bfd *); | |
552 | const bfd_target * bfd_mach_o_core_p (bfd *); | |
553 | const bfd_target * bfd_mach_o_archive_p (bfd *); | |
554 | bfd * bfd_mach_o_openr_next_archived_file (bfd *, bfd *); | |
555 | int bfd_mach_o_lookup_section (bfd *, asection *, bfd_mach_o_load_command **, bfd_mach_o_section **); | |
556 | int bfd_mach_o_lookup_command (bfd *, bfd_mach_o_load_command_type, bfd_mach_o_load_command **); | |
557 | unsigned long bfd_mach_o_stack_addr (enum bfd_mach_o_cpu_type); | |
558 | int bfd_mach_o_core_fetch_environment (bfd *, unsigned char **, unsigned int *); | |
559 | char * bfd_mach_o_core_file_failing_command (bfd *); | |
560 | int bfd_mach_o_core_file_failing_signal (bfd *); | |
561 | bfd_boolean bfd_mach_o_core_file_matches_executable_p (bfd *, bfd *); | |
846b9259 | 562 | bfd *bfd_mach_o_fat_extract (bfd *, bfd_format , const bfd_arch_info_type *); |
3af9a47b NC |
563 | |
564 | extern const bfd_target mach_o_be_vec; | |
565 | extern const bfd_target mach_o_le_vec; | |
566 | extern const bfd_target mach_o_fat_vec; | |
567 | ||
568 | #endif /* _BFD_MACH_O_H_ */ |