source: trunk/include/k/kLdrFmts/mach-o.h@ 37

Last change on this file since 37 was 32, checked in by bird, 16 years ago

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1/* $Id: mach-o.h 32 2009-07-01 21:08:59Z bird $ */
2/** @file
3 * Mach-0 structures, types and defines.
4 */
5
6/*
7 * Copyright (c) 2006-2007 Knut St. Osmundsen <bird-kStuff-spamix@anduin.net>
8 *
9 * Permission is hereby granted, free of charge, to any person
10 * obtaining a copy of this software and associated documentation
11 * files (the "Software"), to deal in the Software without
12 * restriction, including without limitation the rights to use,
13 * copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following
16 * conditions:
17 *
18 * The above copyright notice and this permission notice shall be
19 * included in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28 * OTHER DEALINGS IN THE SOFTWARE.
29 */
30
31#ifndef ___k_kLdrFmts_mach_o_h___
32#define ___k_kLdrFmts_mach_o_h___
33
34#include <k/kDefs.h>
35#include <k/kTypes.h>
36
37
38/** @defgroup grp_mach_o The Mach-O Structures, Types, and Defines.
39 * @{
40 */
41
42
43#ifndef IMAGE_FAT_SIGNATURE
44/** The FAT signature (universal binaries). */
45# define IMAGE_FAT_SIGNATURE KU32_C(0xcafebabe)
46#endif
47#ifndef IMAGE_FAT_SIGNATURE_OE
48/** The FAT signature (universal binaries), other endian. */
49# define IMAGE_FAT_SIGNATURE_OE KU32_C(0xbebafeca)
50#endif
51
52/**
53 * The fat header found at the start of universal binaries.
54 * It is followed by \a nfat_arch numbers of \a fat_arch structures.
55 */
56typedef struct fat_header
57{
58 KU32 magic;
59 KU32 nfat_arch;
60} fat_header_t;
61
62/**
63 * Description of fat file item.
64 */
65typedef struct fat_arch
66{
67 KI32 cputype;
68 KI32 cpusubtype;
69 KU32 offset;
70 KU32 size;
71 KU32 align; /**< Power of 2. */
72} fat_arch_t;
73
74
75
76#ifndef IMAGE_MACHO32_SIGNATURE
77/** The 32-bit Mach-O signature. */
78# define IMAGE_MACHO32_SIGNATURE KU32_C(0xfeedface)
79#endif
80#ifndef IMAGE_MACHO32_SIGNATURE_OE
81/** The 32-bit Mach-O signature, other endian. */
82# define IMAGE_MACHO32_SIGNATURE_OE KU32_C(0xcefaedfe)
83#endif
84#define MH_MAGIC IMAGE_MACHO32_SIGNATURE
85#define MH_CIGAM IMAGE_MACHO32_SIGNATURE_OE
86
87/**
88 * 32-bit Mach-O header.
89 * This is followed by \a ncmds number of load commands.
90 * @see mach_header_64
91 */
92typedef struct mach_header_32
93{
94 KU32 magic;
95 KI32 cputype;
96 KI32 cpusubtype;
97 KU32 filetype;
98 KU32 ncmds;
99 KU32 sizeofcmds;
100 KU32 flags;
101} mach_header_32_t;
102
103
104
105#ifndef IMAGE_MACHO64_SIGNATURE
106/** The 64-bit Mach-O signature. */
107# define IMAGE_MACHO64_SIGNATURE KU32_C(0xfeedfacf)
108#endif
109#ifndef IMAGE_MACHO64_SIGNATURE_OE
110/** The 64-bit Mach-O signature, other endian. */
111# define IMAGE_MACHO64_SIGNATURE_OE KU32_C(0xfefaedfe)
112#endif
113#define MH_MAGIC_64 IMAGE_MACHO64_SIGNATURE
114#define MH_CIGAM_64 IMAGE_MACHO64_SIGNATURE_OE
115
116/**
117 * 64-bit Mach-O header.
118 * This is followed by \a ncmds number of load commands.
119 * @see mach_header
120 */
121typedef struct mach_header_64
122{
123 KU32 magic;
124 KI32 cputype;
125 KI32 cpusubtype;
126 KU32 filetype;
127 KU32 ncmds;
128 KU32 sizeofcmds;
129 KU32 flags;
130 KU32 reserved; /**< (for proper struct and command alignment I guess) */
131} mach_header_64_t;
132
133
134/** @name File types (mach_header_64::filetype, mach_header_32::filetype)
135 * @{
136 */
137#define MH_OBJECT KU32_C(1) /**< Object (relocatable). */
138#define MH_EXECUTE KU32_C(2) /**< Executable (demand paged). */
139#define MH_FVMLIB KU32_C(3) /**< Fixed VM shared library. */
140#define MH_CORE KU32_C(4) /**< Core file. */
141#define MH_PRELOAD KU32_C(5) /**< Preloaded executable. */
142#define MH_DYLIB KU32_C(6) /**< Dynamically bound shared library. */
143#define MH_DYLINKER KU32_C(7) /**< Dynamic linker. */
144#define MH_BUNDLE KU32_C(8) /**< Dymamically bound bundle. */
145#define MH_DYLIB_STUB KU32_C(9) /**< Shared library stub for static linking. */
146#define MH_DSYM KU32_C(10)/**< Debug symbols. */
147
148/** @} */
149
150
151/** @name Mach-O Header flags (mach_header_64::flags, mach_header_32::flags)
152 * @{
153 */
154#define MH_NOUNDEFS KU32_C(0x00000001) /**< No undefined symbols. */
155#define MH_INCRLINK KU32_C(0x00000002) /**< Partial increment link output. */
156#define MH_DYLDLINK KU32_C(0x00000004) /**< Food for the dynamic linker, not for ld. */
157#define MH_BINDATLOAD KU32_C(0x00000008) /**< Bind all undefined symbols at load time. */
158#define MH_PREBOUND KU32_C(0x00000010) /**< Contains prebound undefined symbols. */
159#define MH_SPLIT_SEGS KU32_C(0x00000020) /**< Read-only and read-write segments are split. */
160#define MH_LAZY_INIT KU32_C(0x00000040) /**< Obsolete flag for doing lazy init when data is written. */
161#define MH_TWOLEVEL KU32_C(0x00000080) /**< Uses two-level name space bindings. */
162#define MH_FORCE_FLAT KU32_C(0x00000100) /**< Task: The executable forces all images to use flat name space bindings. */
163#define MH_NOMULTIDEFS KU32_C(0x00000200) /**< No multiple symbol definitions, safe to use two-level namespace hints. */
164#define MH_NOFIXPREBINDING KU32_C(0x00000400) /**< The dynamic linker should not notify the prebinding agent about this executable. */
165#define MH_PREBINDABLE KU32_C(0x00000800) /**< Not prebound, but it can be. Invalid if MH_PREBOUND is set. */
166#define MH_ALLMODSBOUND KU32_C(0x00001000) /**< Binds to all two-level namespace modules of preqs. Requires MH_PREBINDABLE and MH_TWOLEVEL to be set. */
167#define MH_SUBSECTIONS_VIA_SYMBOLS KU32_C(0x00002000) /**< Safe to divide sections into sub-sections via symbols for dead code stripping. */
168#define MH_CANONICAL KU32_C(0x00004000) /**< Canonicalized via unprebind. */
169#define MH_WEAK_DEFINES KU32_C(0x00008000) /**< The (finally) linked image has weak symbols. */
170#define MH_BINDS_TO_WEAK KU32_C(0x00010000) /**< The (finally) linked image uses weak symbols. */
171#define MH_ALLOW_STACK_EXECUTION KU32_C(0x00020000) /**< Task: allow stack execution. (MH_EXECUTE only) */
172#define MH_VALID_FLAGS KU32_C(0x0003ffff) /**< Mask containing the defined flags. */
173/** @} */
174
175
176/** @name CPU types / bits (mach_header_64::cputype, mach_header_32::cputype, fat_arch::cputype)
177 * @{
178 */
179#define CPU_ARCH_MASK KI32_C(0xff000000)
180#define CPU_ARCH_ABI64 KI32_C(0x01000000)
181#define CPU_TYPE_ANY KI32_C(-1)
182#define CPU_TYPE_VAX KI32_C(1)
183#define CPU_TYPE_MC680x0 KI32_C(6)
184#define CPU_TYPE_X86 KI32_C(7)
185#define CPU_TYPE_I386 CPU_TYPE_X86
186#define CPU_TYPE_X86_64 (CPU_TYPE_X86 | CPU_ARCH_ABI64)
187#define CPU_TYPE_MC98000 KI32_C(10)
188#define CPU_TYPE_HPPA KI32_C(11)
189#define CPU_TYPE_MC88000 KI32_C(13)
190#define CPU_TYPE_SPARC KI32_C(14)
191#define CPU_TYPE_I860 KI32_C(15)
192#define CPU_TYPE_POWERPC KI32_C(18)
193#define CPU_TYPE_POWERPC64 (CPU_TYPE_POWERPC | CPU_ARCH_ABI64)
194/** @} */
195
196
197/** @name CPU subtypes (mach_header_64::cpusubtype, mach_header_32::cpusubtype, fat_arch::cpusubtype)
198 * @{ */
199#define CPU_SUBTYPE_MULTIPLE KI32_C(-1)
200#define CPU_SUBTYPE_LITTLE_ENDIAN KI32_C(0) /**< figure this one out. */
201#define CPU_SUBTYPE_BIG_ENDIAN KI32_C(1) /**< ditto */
202
203/* VAX */
204#define CPU_SUBTYPE_VAX_ALL KI32_C(0)
205#define CPU_SUBTYPE_VAX780 KI32_C(1)
206#define CPU_SUBTYPE_VAX785 KI32_C(2)
207#define CPU_SUBTYPE_VAX750 KI32_C(3)
208#define CPU_SUBTYPE_VAX730 KI32_C(4)
209#define CPU_SUBTYPE_UVAXI KI32_C(5)
210#define CPU_SUBTYPE_UVAXII KI32_C(6)
211#define CPU_SUBTYPE_VAX8200 KI32_C(7)
212#define CPU_SUBTYPE_VAX8500 KI32_C(8)
213#define CPU_SUBTYPE_VAX8600 KI32_C(9)
214#define CPU_SUBTYPE_VAX8650 KI32_C(10)
215#define CPU_SUBTYPE_VAX8800 KI32_C(11)
216#define CPU_SUBTYPE_UVAXIII KI32_C(12)
217
218/* MC680xx */
219#define CPU_SUBTYPE_MC680x0_ALL KI32_C(1)
220#define CPU_SUBTYPE_MC68030 KI32_C(1)
221#define CPU_SUBTYPE_MC68040 KI32_C(2)
222#define CPU_SUBTYPE_MC68030_ONLY KI32_C(3)
223
224/* I386 */
225#define CPU_SUBTYPE_INTEL(fam, model) ( (KI32)(((model) << 4) | (fam)) )
226#define CPU_SUBTYPE_INTEL_FAMILY(subtype) ( (subtype) & 0xf )
227#define CPU_SUBTYPE_INTEL_MODEL(subtype) ( (subtype) >> 4 )
228#define CPU_SUBTYPE_INTEL_FAMILY_MAX 0xf
229#define CPU_SUBTYPE_INTEL_MODEL_ALL 0
230
231#define CPU_SUBTYPE_I386_ALL CPU_SUBTYPE_INTEL(3, 0)
232#define CPU_SUBTYPE_386 CPU_SUBTYPE_INTEL(3, 0)
233#define CPU_SUBTYPE_486 CPU_SUBTYPE_INTEL(4, 0)
234#define CPU_SUBTYPE_486SX CPU_SUBTYPE_INTEL(4, 8)
235#define CPU_SUBTYPE_586 CPU_SUBTYPE_INTEL(5, 0)
236#define CPU_SUBTYPE_PENT CPU_SUBTYPE_INTEL(5, 0)
237#define CPU_SUBTYPE_PENTPRO CPU_SUBTYPE_INTEL(6, 1)
238#define CPU_SUBTYPE_PENTII_M3 CPU_SUBTYPE_INTEL(6, 3)
239#define CPU_SUBTYPE_PENTII_M5 CPU_SUBTYPE_INTEL(6, 5)
240#define CPU_SUBTYPE_CELERON CPU_SUBTYPE_INTEL(7, 6)
241#define CPU_SUBTYPE_CELERON_MOBILE CPU_SUBTYPE_INTEL(7, 7)
242#define CPU_SUBTYPE_PENTIUM_3 CPU_SUBTYPE_INTEL(8, 0)
243#define CPU_SUBTYPE_PENTIUM_3_M CPU_SUBTYPE_INTEL(8, 1)
244#define CPU_SUBTYPE_PENTIUM_3_XEON CPU_SUBTYPE_INTEL(8, 2)
245#define CPU_SUBTYPE_PENTIUM_M CPU_SUBTYPE_INTEL(9, 0)
246#define CPU_SUBTYPE_PENTIUM_4 CPU_SUBTYPE_INTEL(10, 0)
247#define CPU_SUBTYPE_PENTIUM_4_M CPU_SUBTYPE_INTEL(10, 1)
248#define CPU_SUBTYPE_ITANIUM CPU_SUBTYPE_INTEL(11, 0)
249#define CPU_SUBTYPE_ITANIUM_2 CPU_SUBTYPE_INTEL(11, 1)
250#define CPU_SUBTYPE_XEON CPU_SUBTYPE_INTEL(12, 0)
251#define CPU_SUBTYPE_XEON_MP CPU_SUBTYPE_INTEL(12, 1)
252
253/* X86 */
254#define CPU_SUBTYPE_X86_ALL KI32_C(3) /* CPU_SUBTYPE_I386_ALL */
255#define CPU_SUBTYPE_X86_64_ALL KI32_C(3) /* CPU_SUBTYPE_I386_ALL */
256#define CPU_SUBTYPE_X86_ARCH1 KI32_C(4) /* CPU_SUBTYPE_I486_ALL */
257
258/* MIPS */
259#define CPU_SUBTYPE_MIPS_ALL KI32_C(0)
260#define CPU_SUBTYPE_MIPS_R2300 KI32_C(1)
261#define CPU_SUBTYPE_MIPS_R2600 KI32_C(2)
262#define CPU_SUBTYPE_MIPS_R2800 KI32_C(3)
263#define CPU_SUBTYPE_MIPS_R2000a KI32_C(4)
264#define CPU_SUBTYPE_MIPS_R2000 KI32_C(5)
265#define CPU_SUBTYPE_MIPS_R3000a KI32_C(6)
266#define CPU_SUBTYPE_MIPS_R3000 KI32_C(7)
267
268/* MC98000 (PowerPC) */
269#define CPU_SUBTYPE_MC98000_ALL KI32_C(0)
270#define CPU_SUBTYPE_MC98601 KI32_C(1)
271
272/* HP-PA */
273#define CPU_SUBTYPE_HPPA_ALL KI32_C(0)
274#define CPU_SUBTYPE_HPPA_7100 KI32_C(0)
275#define CPU_SUBTYPE_HPPA_7100LC KI32_C(1)
276
277/* MC88000 */
278#define CPU_SUBTYPE_MC88000_ALL KI32_C(0)
279#define CPU_SUBTYPE_MC88100 KI32_C(1)
280#define CPU_SUBTYPE_MC88110 KI32_C(2)
281
282/* SPARC */
283#define CPU_SUBTYPE_SPARC_ALL KI32_C(0)
284
285/* I860 */
286#define CPU_SUBTYPE_I860_ALL KI32_C(0)
287#define CPU_SUBTYPE_I860_860 KI32_C(1)
288
289/* PowerPC */
290#define CPU_SUBTYPE_POWERPC_ALL KI32_C(0)
291#define CPU_SUBTYPE_POWERPC_601 KI32_C(1)
292#define CPU_SUBTYPE_POWERPC_602 KI32_C(2)
293#define CPU_SUBTYPE_POWERPC_603 KI32_C(3)
294#define CPU_SUBTYPE_POWERPC_603e KI32_C(4)
295#define CPU_SUBTYPE_POWERPC_603ev KI32_C(5)
296#define CPU_SUBTYPE_POWERPC_604 KI32_C(6)
297#define CPU_SUBTYPE_POWERPC_604e KI32_C(7)
298#define CPU_SUBTYPE_POWERPC_620 KI32_C(8)
299#define CPU_SUBTYPE_POWERPC_750 KI32_C(9)
300#define CPU_SUBTYPE_POWERPC_7400 KI32_C(10)
301#define CPU_SUBTYPE_POWERPC_7450 KI32_C(11)
302#define CPU_SUBTYPE_POWERPC_Max KI32_C(10)
303#define CPU_SUBTYPE_POWERPC_SCVger KI32_C(11)
304#define CPU_SUBTYPE_POWERPC_970 KI32_C(100)
305
306/* Subtype capability / feature bits, added in 10.5. X86 only? */
307#define CPU_SUBTYPE_MASK KU32_C(0xff000000)
308#define CPU_SUBTYPE_LIB64 KU32_C(0x8000000)
309
310/** @} */
311
312
313
314/** @defgroup grp_macho_o_lc Load Commands
315 * @{ */
316
317/**
318 * The load command common core structure.
319 *
320 * After the Mach-O header follows an array of variable sized
321 * load command which all has this header in common.
322 */
323typedef struct load_command
324{
325 KU32 cmd; /**< The load command id. */
326 KU32 cmdsize; /**< The size of the command (including this header). */
327} load_command_t;
328
329/** @name Load Command IDs (load_command::cmd)
330 * @{
331 */
332/** Flag that when set requires the dynamic linker to fail if it doesn't
333 * grok the command. The dynamic linker will otherwise ignore commands it
334 * doesn't understand. Introduced with Mac OS X 10.1. */
335#define LC_REQ_DYLD KU32_C(0x80000000)
336
337#define LC_SEGMENT_32 KU32_C(0x01) /**< Segment to be mapped (32-bit). See segment_command_32. */
338#define LC_SYMTAB KU32_C(0x02) /**< 'stab' symbol table. See symtab_command. */
339#define LC_SYMSEG KU32_C(0x03) /**< Obsoleted gdb symbol table. */
340#define LC_THREAD KU32_C(0x04) /**< Thread. See thread_command. */
341#define LC_UNIXTHREAD KU32_C(0x05) /**< Unix thread (includes stack and stuff). See thread_command. */
342#define LC_LOADFVMLIB KU32_C(0x06) /**< Load a specified fixed VM shared library (obsolete?). See fvmlib_command. */
343#define LC_IDFVMLIB KU32_C(0x07) /**< Fixed VM shared library id (obsolete?). See fvmlib_command. */
344#define LC_IDENT KU32_C(0x08) /**< Identification info (obsolete). See ident_command. */
345#define LC_FVMFILE KU32_C(0x09) /**< Fixed VM file inclusion (internal). See fvmfile_command. */
346#define LC_PREPAGE KU32_C(0x0a) /**< Prepage command (internal). See ?? */
347#define LC_DYSYMTAB KU32_C(0x0b) /**< Symbol table for dynamic linking. See dysymtab_command. */
348#define LC_LOAD_DYLIB KU32_C(0x0c) /**< Load a dynamically linked shared library. See dylib_command. */
349#define LC_ID_DYLIB KU32_C(0x0d) /**< Dynamically linked share library ident. See dylib_command. */
350#define LC_LOAD_DYLINKER KU32_C(0x0e) /**< Load a dynamical link editor. See dylinker_command. */
351#define LC_ID_DYLINKER KU32_C(0x0f) /**< Dynamic link editor ident. See dylinker_command. */
352#define LC_PREBOUND_DYLIB KU32_C(0x10) /**< Prebound modules for dynamically linking of a shared lib. See prebound_dylib_command. */
353#define LC_ROUTINES KU32_C(0x11) /**< Image routines. See routines_command_32. */
354#define LC_SUB_FRAMEWORK KU32_C(0x12) /**< Sub framework. See sub_framework_command. */
355#define LC_SUB_UMBRELLA KU32_C(0x13) /**< Sub umbrella. See sub_umbrella_command. */
356#define LC_SUB_CLIENT KU32_C(0x14) /**< Sub client. See sub_client_command. */
357#define LC_SUB_LIBRARY KU32_C(0x15) /**< Sub library. See sub_library_command. */
358#define LC_TWOLEVEL_HINTS KU32_C(0x16) /**< Two-level namespace lookup hints. See twolevel_hints_command. */
359#define LC_PREBIND_CKSUM KU32_C(0x17) /**< Prebind checksum. See prebind_cksum_command. */
360#define LC_LOAD_WEAK_DYLIB (KU32_C(0x18) | LC_REQ_DYLD) /**< Dylib that can be missing, all symbols weak. See dylib_command. */
361#define LC_SEGMENT_64 KU32_C(0x19) /**< segment to be mapped (64-bit). See segment_command_32. */
362#define LC_ROUTINES_64 KU32_C(0x1a) /**< Image routines (64-bit). See routines_command_32. */
363#define LC_UUID KU32_C(0x1b) /**< The UUID of the object module. See uuid_command. */
364/** @} */
365
366
367/**
368 * Load Command String.
369 */
370typedef struct lc_str
371{
372 /** Offset of the string relative to the load_command structure.
373 * The string is zero-terminated. the size of the load command
374 * is zero padded up to a multiple of 4 bytes. */
375 KU32 offset;
376} lc_str_t;
377
378
379/**
380 * Segment load command (32-bit).
381 */
382typedef struct segment_command_32
383{
384 KU32 cmd; /**< LC_SEGMENT */
385 KU32 cmdsize; /**< sizeof(self) + sections. */
386 char segname[16]; /**< The segment name. */
387 KU32 vmaddr; /**< Memory address of this segment. */
388 KU32 vmsize; /**< Size of this segment. */
389 KU32 fileoff; /**< The file location of the segment. */
390 KU32 filesize; /**< The file size of the segment. */
391 KU32 maxprot; /**< Maximum VM protection. */
392 KU32 initprot; /**< Initial VM protection. */
393 KU32 nsects; /**< Number of section desciptors following this structure. */
394 KU32 flags; /**< Flags (SG_*). */
395} segment_command_32_t;
396
397
398/**
399 * Segment load command (64-bit).
400 * Same as segment_command_32 except 4 members has been blown up to 64-bit.
401 */
402typedef struct segment_command_64
403{
404 KU32 cmd; /**< LC_SEGMENT */
405 KU32 cmdsize; /**< sizeof(self) + sections. */
406 char segname[16]; /**< The segment name. */
407 KU64 vmaddr; /**< Memory address of this segment. */
408 KU64 vmsize; /**< Size of this segment. */
409 KU64 fileoff; /**< The file location of the segment. */
410 KU64 filesize; /**< The file size of the segment. */
411 KU32 maxprot; /**< Maximum VM protection. */
412 KU32 initprot; /**< Initial VM protection. */
413 KU32 nsects; /**< Number of section desciptors following this structure. */
414 KU32 flags; /**< Flags (SG_*). */
415} segment_command_64_t;
416
417/** @name Segment flags (segment_command_64::flags, segment_command_32::flags)
418 * @{ */
419/** Map the file bits in the top end of the memory area for the segment
420 * instead of the low end. Intended for stacks in core dumps.
421 * The part of the segment memory not covered by file bits will be zeroed. */
422#define SG_HIGHVM KU32_C(0x00000001)
423/** This segment is the virtual memory allocated by a fixed VM library.
424 * (Used for overlap checking in the linker.) */
425#define SG_FVMLIB KU32_C(0x00000002)
426/** No relocations for or symbols that's relocated to in this segment.
427 * The segment can therefore safely be replaced. */
428#define SG_NORELOC KU32_C(0x00000004)
429/** The segment is protected.
430 * The first page isn't protected if it starts at file offset 0
431 * (so that the mach header and this load command can be easily mapped). */
432#define SG_PROTECTED_VERSION_1 KU32_C(0x00000008)
433/** @} */
434
435
436/**
437 * 32-bit section (part of a segment load command).
438 */
439typedef struct section_32
440{
441 char sectname[16]; /**< The section name. */
442 char segname[16]; /**< The name of the segment this section goes into. */
443 KU32 addr; /**< The memory address of this section. */
444 KU32 size; /**< The size of this section. */
445 KU32 offset; /**< The file offset of this section. */
446 KU32 align; /**< The section alignment (**2). */
447 KU32 reloff; /**< The file offset of the relocations. */
448 KU32 nreloc; /**< The number of relocations. */
449 KU32 flags; /**< The section flags; section type and attribs */
450 KU32 reserved1; /**< Reserved / offset / index. */
451 KU32 reserved2; /**< Reserved / count / sizeof. */
452} section_32_t;
453
454/**
455 * 64-bit section (part of a segment load command).
456 */
457typedef struct section_64
458{
459 char sectname[16]; /**< The section name. */
460 char segname[16]; /**< The name of the segment this section goes into. */
461 KU64 addr; /**< The memory address of this section. */
462 KU64 size; /**< The size of this section. */
463 KU32 offset; /**< The file offset of this section. */
464 KU32 align; /**< The section alignment (**2). */
465 KU32 reloff; /**< The file offset of the relocations. */
466 KU32 nreloc; /**< The number of relocations. */
467 KU32 flags; /**< The section flags; section type and attribs */
468 KU32 reserved1; /**< Reserved / offset / index. */
469 KU32 reserved2; /**< Reserved / count / sizeof. */
470 KU32 reserved3; /**< (Just) Reserved. */
471} section_64_t;
472
473/** @name Section flags (section_64::flags, section_32::flags)
474 * @{
475 */
476/** Section type mask. */
477#define SECTION_TYPE KU32_C(0x000000ff)
478/** Regular section. */
479#define S_REGULAR 0x0
480/** Zero filled section. */
481#define S_ZEROFILL 0x1
482/** C literals. */
483#define S_CSTRING_LITERALS 0x2
484/** 4 byte literals. */
485#define S_4BYTE_LITERALS 0x3
486/** 8 byte literals. */
487#define S_8BYTE_LITERALS 0x4
488/** Pointer to literals. */
489#define S_LITERAL_POINTERS 0x5
490/** Section containing non-lazy symbol pointers.
491 * Reserved1 == start index in the indirect symbol table. */
492#define S_NON_LAZY_SYMBOL_POINTERS 0x6
493/** Section containing lazy symbol pointers.
494 * Reserved1 == start index in the indirect symbol table. */
495#define S_LAZY_SYMBOL_POINTERS 0x7
496/** Section containing symbol stubs.
497 * Reserved2 == stub size. */
498#define S_SYMBOL_STUBS 0x8
499/** Section containing function pointers for module initialization. . */
500#define S_MOD_INIT_FUNC_POINTERS 0x9
501/** Section containing function pointers for module termination. . */
502#define S_MOD_TERM_FUNC_POINTERS 0xa
503/** Section containing symbols that are to be coalesced. */
504#define S_COALESCED 0xb
505/** Zero filled section that be larger than 4GB. */
506#define S_GB_ZEROFILL 0xc
507/** Section containing pairs of function pointers for interposing. */
508#define S_INTERPOSING 0xd
509/** 16 byte literals. */
510#define S_16BYTE_LITERALS 0xe
511
512/** Section attribute mask. */
513#define SECTION_ATTRIBUTES KU32_C(0xffffff00)
514
515/** User settable attribute mask. */
516#define SECTION_ATTRIBUTES_USR KU32_C(0xff000000)
517/** Pure instruction (code). */
518#define S_ATTR_PURE_INSTRUCTIONS KU32_C(0x80000000)
519/** ranlib, ignore my symbols... */
520#define S_ATTR_NO_TOC KU32_C(0x40000000)
521/** May strip static symbols when linking int a MH_DYLDLINK file. */
522#define S_ATTR_STRIP_STATIC_SYMS KU32_C(0x20000000)
523/** No dead stripping. */
524#define S_ATTR_NO_DEAD_STRIP KU32_C(0x10000000)
525/** Live support. */
526#define S_ATTR_LIVE_SUPPORT KU32_C(0x08000000)
527/** Contains self modifying code (generally i386 code stub for dyld). */
528#define S_ATTR_SELF_MODIFYING_CODE KU32_C(0x04000000)
529/** Debug info (DWARF usually). */
530#define S_ATTR_DEBUG KU32_C(0x02000000)
531
532/** System settable attribute mask. */
533#define SECTION_ATTRIBUTES_SYS KU32_C(0x00ffff00)
534/** Contains some instructions (code). */
535#define S_ATTR_SOME_INSTRUCTIONS KU32_C(0x00000400)
536/** Has external relocations. */
537#define S_ATTR_EXT_RELOC KU32_C(0x00000200)
538/** Has internal (local) relocations. */
539#define S_ATTR_LOC_RELOC KU32_C(0x00000100)
540/** @} */
541
542/** @name Known Segment and Section Names.
543 * Some of these implies special linker behaviour.
544 * @{
545 */
546/** Page zero - not-present page for catching invalid access. (MH_EXECUTE typically) */
547#define SEG_PAGEZERO "__PAGEZERO"
548/** Traditional UNIX text segment.
549 * Defaults to R-X. */
550#define SEG_TEXT "__TEXT"
551/** The text part of SEG_TEXT. */
552#define SECT_TEXT "__text"
553/** The fvmlib initialization. */
554#define SECT_FVMLIB_INIT0 "__fvmlib_init0"
555/** The section following the fvmlib initialization. */
556#define SECT_FVMLIB_INIT1 "__fvmlib_init1"
557/** The traditional UNIX data segment. (DGROUP to DOS and OS/2 people.) */
558#define SEG_DATA "__DATA"
559/** The initialized data section. */
560#define SECT_DATA "__data"
561/** The uninitialized data section. */
562#define SECT_BSS "__bss"
563/** The common symbol section. */
564#define SECT_COMMON "__common"
565/** Objective-C runtime segment. */
566#define SEG_OBJC "__OBJC"
567/** Objective-C symbol table section. */
568#define SECT_OBJC_SYMBOLS "__symbol_table"
569/** Objective-C module information section. */
570#define SECT_OBJC_MODULES "__module_info"
571/** Objective-C string table section. */
572#define SECT_OBJC_STRINGS "__selector_strs"
573/** Objective-C string table section. */
574#define SECT_OBJC_REFS "__selector_refs"
575/** Icon segment. */
576#define SEG_ICON "__ICON"
577/** The icon headers. */
578#define SECT_ICON_HEADER "__header"
579/** The icons in the TIFF format. */
580#define SECT_ICON_TIFF "__tiff"
581/** ld -seglinkedit segment containing all the structs create and maintained
582 * by the linker. MH_EXECUTE and MH_FVMLIB only. */
583#define SEG_LINKEDIT "__LINKEDIT"
584/** The unix stack segment. */
585#define SEG_UNIXSTACK "__UNIXSTACK"
586/** The segment for the self modifying code for dynamic linking.
587 * Implies RWX permissions. */
588#define SEG_IMPORT "__IMPORT"
589/** @} */
590
591
592/** @todo fvmlib */
593/** @todo fvmlib_command (LC_IDFVMLIB or LC_LOADFVMLIB) */
594/** @todo dylib */
595/** @todo dylib_command (LC_ID_DYLIB, LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB) */
596/** @todo sub_framework_command (LC_SUB_FRAMEWORK) */
597/** @todo sub_client_command (LC_SUB_CLIENT) */
598/** @todo sub_umbrella_command (LC_SUB_UMBRELLA) */
599/** @todo sub_library_command (LC_SUB_LIBRARY) */
600/** @todo prebound_dylib_command (LC_PREBOUND_DYLIB) */
601/** @todo dylinker_command (LC_ID_DYLINKER or LC_LOAD_DYLINKER) */
602
603
604/**
605 * Thread command.
606 *
607 * State description of a thread that is to be created. The description
608 * is made up of a number of state structures preceded by a 32-bit flavor
609 * and 32-bit count field stating the kind of stat structure and it's size
610 * in KU32 items respecitvly.
611 *
612 * LC_UNIXTHREAD differs from LC_THREAD in that it implies stack creation
613 * and that it's started with the typical main(int, char **, char **) frame
614 * on the stack.
615 */
616typedef struct thread_command
617{
618 KU32 cmd; /**< LC_UNIXTHREAD or LC_THREAD. */
619 KU32 cmdsize; /**< The size of the command (including this header). */
620} thread_command_t;
621
622
623/** @todo routines_command (LC_ROUTINES) */
624/** @todo routines_command_64 (LC_ROUTINES_64) */
625
626
627/**
628 * Symbol table command.
629 * Contains a.out style symbol table with some tricks.
630 */
631typedef struct symtab_command
632{
633 KU32 cmd; /**< LC_SYMTAB */
634 KU32 cmdsize; /** sizeof(symtab_command_t) */
635 KU32 symoff; /** The file offset of the symbol table. */
636 KU32 nsyms; /** The number of symbols in the symbol table. */
637 KU32 stroff; /** The file offset of the string table. */
638 KU32 strsize; /** The size of the string table. */
639} symtab_command_t;
640
641
642/** @todo dysymtab_command (LC_DYSYMTAB) */
643/** @todo dylib_table_of_contents */
644/** @todo dylib_module_32 */
645/** @todo dylib_module_64 */
646/** @todo dylib_reference */
647/** @todo twolevel_hints_command (LC_TWOLEVEL_HINTS) */
648/** @todo twolevel_hint */
649/** @todo prebind_cksum_command (LC_PREBIND_CKSUM) */
650
651
652/**
653 * UUID generated by ld.
654 */
655typedef struct uuid_command
656{
657 KU32 cmd; /**< LC_UUID */
658 KU32 cmdsize; /**< sizeof(uuid_command_t) */
659 KU8 uuid[16]; /** The UUID bytes. */
660} uuid_command_t;
661
662
663/** @todo symseg_command (LC_SYMSEG) */
664/** @todo ident_command (LC_IDENT) */
665/** @todo fvmfile_command (LC_FVMFILE) */
666
667/** @} */
668
669
670
671/** @defgroup grp_macho_o_syms Symbol Table
672 * @{ */
673
674/**
675 * The 32-bit Mach-O version of the nlist structure.
676 *
677 * This differs from the a.out nlist struct in that the unused n_other field
678 * was renamed to n_sect and used for keeping the relevant section number.
679 * @remark This structure is not name mach_nlist_32 in the Apple headers, but nlist.
680 */
681typedef struct macho_nlist_32
682{
683 union
684 {
685 KI32 n_strx; /**< Offset (index) into the string table. 0 means "". */
686 } n_un;
687 KU8 n_type; /**< Symbol type. */
688 KU8 n_sect; /**< Section number of NO_SECT. */
689 KI16 n_desc; /**< Type specific, debug info details mostly.*/
690 KU32 n_value; /**< The symbol value or stab offset. */
691} macho_nlist_32_t;
692
693
694/**
695 * The 64-bit Mach-O version of the nlist structure.
696 * @see macho_nlist_32
697 */
698typedef struct macho_nlist_64
699{
700 union
701 {
702 KU32 n_strx; /**< Offset (index) into the string table. 0 means "". */
703 } n_un;
704 KU8 n_type; /**< Symbol type. */
705 KU8 n_sect; /**< Section number of NO_SECT. */
706 KI16 n_desc; /**< Type specific, debug info details mostly.*/
707 KU64 n_value; /**< The symbol value or stab offset. */
708} macho_nlist_64_t;
709
710
711/** @name Symbol Type Constants (macho_nlist_32_t::n_type, macho_nlist_64_t::n_type)
712 *
713 * In the Mach-O world n_type is somewhat similar to a.out, meaning N_EXT, N_UNDF, N_ABS
714 * and the debug symbols are essentially the same, but the remaining stuff is different.
715 * The main reason for this is that the encoding of section has been moved to n_sect
716 * to permit up to 255 sections instead of the fixed 3 a.out sections (not counting
717 * the abs symbols and set vectors).
718 *
719 * To avoid confusion with a.out the Mach-O constants has been fitted with a MACHO_
720 * prefix here.
721 *
722 * Common symbols (aka communal symbols and comdefs) are represented by
723 * n_type = MACHO_N_EXT | MACHO_N_UNDF, n_sect = NO_SECT and n_value giving
724 * the size.
725 *
726 *
727 * Symbol table entries can be inserted directly in the assembly code using
728 * this notation:
729 * @code
730 * .stabs "n_name", n_type, n_sect, n_desc, n_value
731 * @endcode
732 *
733 * (1) The line number is optional, GCC doesn't set it.
734 * (2) The type is optional, GCC doesn't set it.
735 * (3) The binutil header is "skeptical" about the line. I'm skeptical about the whole thing... :-)
736 * (M) Mach-O specific?
737 * (S) Sun specific?
738 * @{
739 */
740
741/* Base masks. */
742#define MACHO_N_EXT KU8_C(0x01) /**< External symbol (when set) (N_EXT). */
743#define MACHO_N_TYPE KU8_C(0x0e) /**< Symbol type (N_TYPE without the 8th bit). */
744#define MACHO_N_PEXT KU8_C(0x10) /**< Private extern symbol (when set). (M) */
745#define MACHO_N_STAB KU8_C(0xe0) /**< Debug symbol mask (N_STAB). */
746
747/* MACHO_N_TYPE values. */
748#define MACHO_N_UNDF KU8_C(0x00) /**< MACHO_N_TYPE: Undefined symbol (N_UNDF). n_sect = NO_SECT. */
749#define MACHO_N_ABS KU8_C(0x02) /**< MACHO_N_TYPE: Absolute symbol (N_UNDF). n_sect = NO_SECT. */
750#define MACHO_N_INDR KU8_C(0x0a) /**< MACHO_N_TYPE: Indirect symbol, n_value is the index of the symbol. (M) */
751#define MACHO_N_PBUD KU8_C(0x0c) /**< MACHO_N_TYPE: Prebound undefined symbo (defined in a dylib). (M) */
752#define MACHO_N_SECT KU8_C(0x0e) /**< MACHO_N_TYPE: Defined in the section given by n_sects. (M) */
753
754/* Debug symbols. */
755#define MACHO_N_GSYM KU8_C(0x20) /**< Global variable. "name",, NO_SECT, type, 0 (2) */
756#define MACHO_N_FNAME KU8_C(0x22) /**< Function name (F77). "name",, NO_SECT, 0, 0 */
757#define MACHO_N_FUN KU8_C(0x24) /**< Function / text var. "name",, section, line, address (1) */
758#define MACHO_N_STSYM KU8_C(0x26) /**< Static data symbol. "name",, section, type, address (2) */
759#define MACHO_N_LCSYM KU8_C(0x28) /**< static bss symbol. "name",, section, type, address (2) */
760 /* omits N_MAIN and N_ROSYM. */
761#define MACHO_N_BNSYM KU8_C(0x2e) /**< Begin nsect symbol. 0,, section, 0, address (M) */
762#define MACHO_N_PC KU8_C(0x30) /**< Global pascal symbol. "name",, NO_SECT, subtype?, line (3) */
763 /* omits N_NSYMS, N_NOMAP and N_OBJ. */
764#define MACHO_N_OPT KU8_C(0x3c) /**< Options for the debugger related to the language of the
765 source file. "options?",,,, */
766#define MACHO_N_RSYM KU8_C(0x40) /**< Register variable. "name",, NO_SECT, type, register */
767 /* omits N_M2C */
768#define MACHO_N_SLINE KU8_C(0x44) /**< Source line. 0,, section, line, address */
769 /* omits N_DSLINE, N_BSLINE / N_BROWS, N_DEFD and N_FLINE. */
770#define MACHO_N_ENSYM KU8_C(0x4e) /**< End nsect symbol. 0,, section, 0, address (M) */
771 /* omits N_EHDECL / N_MOD2 and N_CATCH. */
772#define MACHO_N_SSYM KU8_C(0x60) /**< Struct/union element. "name",, NO_SECT, type, offset */
773 /* omits N_ENDM */
774#define MACHO_N_SO KU8_C(0x64) /**< Source file name. "fname",, section, 0, address */
775#define MACHO_N_OSO KU8_C(0x66) /**< Object file name. "fname",, 0, 0, st_mtime (M?) */
776 /* omits N_ALIAS */
777#define MACHO_N_LSYM KU8_C(0x80) /**< Stack variable. "name",, NO_SECT, type, frame_offset */
778#define MACHO_N_BINCL KU8_C(0x82) /**< Begin #include. "fname",, NO_SECT, 0, sum? */
779#define MACHO_N_SOL KU8_C(0x84) /**< #included file. "fname",, section, 0, start_address (S) */
780#define MACHO_N_PARAMS KU8_C(0x86) /**< Compiler params. "params",, NO_SECT, 0, 0 */
781#define MACHO_N_VERSION KU8_C(0x88) /**< Compiler version. "version",, NO_SECT, 0, 0 */
782#define MACHO_N_OLEVEL KU8_C(0x8A) /**< Compiler -O level. "level",, NO_SECT, 0, 0 */
783#define MACHO_N_PSYM KU8_C(0xa0) /**< Parameter variable. "name",, NO_SECT, type, frame_offset */
784#define MACHO_N_EINCL KU8_C(0xa2) /**< End #include. "fname",, NO_SECT, 0, 0 (S) */
785#define MACHO_N_ENTRY KU8_C(0xa4) /**< Alternate entry point. "name",, section, line, address */
786#define MACHO_N_LBRAC KU8_C(0xc0) /**< Left bracket. 0,, NO_SECT, nesting_level, address */
787#define MACHO_N_EXCL KU8_C(0xc2) /**< Deleted include file. "fname",, NO_SECT, 0, sum? (S) */
788 /* omits N_SCOPE */
789#define MACHO_N_RBRAC KU8_C(0xe0) /**< Right bracket. 0,, NO_SECT, nesting_level, address */
790#define MACHO_N_BCOMM KU8_C(0xe2) /**< Begin common. "name",, NO_SECT?, 0, 0 */
791#define MACHO_N_ECOMM KU8_C(0xe4) /**< End common. "name",, section, 0, 0 */
792#define MACHO_N_ECOML KU8_C(0xe8) /**< End local common. 0,, section, 0, address */
793#define MACHO_N_LENG KU8_C(0xfe) /**< Length-value of the preceding entry.
794 "name",, NO_SECT, 0, length */
795
796/** @} */
797
798/** @name Symbol Description Bits (macho_nlist_32_t::n_desc, macho_nlist_64_t::n_desc)
799 *
800 * Mach-O puts the n_desc field to a number of uses, like lazy binding , library
801 * ordinal numbers for -twolevel_namespace, stripping and weak symbol handling.
802 *
803 * @remark The REFERENCE_FLAGS_* are really not flags in the normal sense (bit),
804 * they are more like enum values.
805 * @{
806 */
807
808#define REFERENCE_TYPE KU16_C(0x000f) /**< The reference type mask. */
809#define REFERENCE_FLAG_UNDEFINED_NON_LAZY 0 /**< Normal undefined symbol. */
810#define REFERENCE_FLAG_UNDEFINED_LAZY 1 /**< Lazy undefined symbol. */
811#define REFERENCE_FLAG_DEFINED 2 /**< Defined symbol (dynamic linking). */
812#define REFERENCE_FLAG_PRIVATE_DEFINED 3 /**< Defined private symbol (dynamic linking). */
813#define REFERENCE_FLAG_PRIVATE_UNDEFINED_NON_LAZY 4 /**< Normal undefined private symbol. */
814#define REFERENCE_FLAG_PRIVATE_UNDEFINED_LAZY 5 /**< Lazy undefined private symbol. */
815
816#define REFERENCED_DYNAMICALLY KU16_C(0x0010) /**< Don't strip. */
817
818
819/** Get the dynamic library ordinal. */
820#define GET_LIBRARY_ORDINAL(n_desc) \
821 (((n_desc) >> 8) & 0xff)
822/** Set the dynamic library ordinal. */
823#define SET_LIBRARY_ORDINAL(n_desc, ordinal) \
824 (n_desc) = (((n_desc) & 0xff) | (((ordinal) & 0xff) << 8))
825#define SELF_LIBRARY_ORDINAL 0x00 /**< Special ordinal for refering to onself. */
826#define MAX_LIBRARY_ORDINAL 0xfd /**< Maximum ordinal number. */
827#define DYNAMIC_LOOKUP_ORDINAL 0xfe /**< Special ordinal number for dynamic lookup. (Mac OS X 10.3 and later) */
828#define EXECUTABLE_ORDINAL 0xff /**< Special ordinal number for the executable. */
829
830
831/** Only MH_OBJECT: Never dead strip me! */
832#define N_NO_DEAD_STRIP KU16_C(0x0020)
833/** Not MH_OBJECT: Discarded symbol. */
834#define N_DESC_DISCARDED KU16_C(0x0020)
835/** Weak external symbol. Symbol can be missing, in which case it's will have the value 0. */
836#define N_WEAK_REF KU16_C(0x0040)
837/** Weak symbol definition. The symbol can be overridden by another weak
838 * symbol already present or by a non-weak (strong) symbol definition.
839 * Currently only supported for coalesed symbols.
840 * @remark This bit means something differently for undefined symbols, see N_REF_TO_WEAK.
841 */
842#define N_WEAK_DEF KU16_C(0x0080)
843/** Reference to a weak symbol, resolve using flat namespace searching.
844 * @remark This bit means something differently for defined symbols, see N_WEAK_DEF. */
845#define N_REF_TO_WEAK KU16_C(0x0080)
846
847/** @} */
848
849/** @} */
850
851
852/** @defgroup grp_macho_o_relocs Relocations
853 * @{ */
854
855/**
856 * Relocation entry.
857 *
858 * Differs from a.out in the meaning of r_symbolnum when r_extern=0 and
859 * that r_pad is made into r_type.
860 *
861 * @remark This structure and type has been prefixed with macho_ to avoid
862 * confusion with the original a.out type.
863 */
864typedef struct macho_relocation_info
865{
866 KI32 r_address; /**< Section relative address of the fixup.
867 The top bit (signed) indicates that this is a scattered
868 relocation if set, see scattered_relocation_info_t. */
869 KU32 r_symbolnum : 24, /**< r_extern=1: Symbol table index, relocate with the address of this symbol.
870 r_extern=0: Section ordinal, relocate with the address of this section. */
871 r_pcrel : 1, /**< PC (program counter) relative fixup; subtract the fixup address. */
872 r_length : 2, /**< Fixup length: 0=KU8, 1=KU16, 2=KU32, 3=KU64. */
873 r_extern : 1, /**< External or internal fixup, decides the r_symbolnum interpretation.. */
874 r_type : 4; /**< Relocation type; 0 is standard, non-zero are machine specific. */
875} macho_relocation_info_t;
876
877/** Special section ordinal value for absolute relocations. */
878#define R_ABS 0
879
880/** Flag in r_address indicating that the relocation is of the
881 * scattered_relocation_info_t kind and not macho_relocation_info_t. */
882#define R_SCATTERED KU32_C(0x80000000)
883
884/**
885 * Scattered relocation.
886 *
887 * This is a hack mainly for RISC machines which restricts section size
888 * to 16MB among other things.
889 *
890 * The reason for the big/little endian differences here is of course because
891 * of the R_SCATTERED mask and the way bitfields are implemented by the
892 * C/C++ compilers.
893 */
894typedef struct scattered_relocation_info
895{
896#if K_ENDIAN == K_ENDIAN_LITTLE
897 KU32 r_address : 24, /**< Section relative address of the fixup. (macho_relocation_info_t::r_address) */
898 r_type : 4, /**< Relocation type; 0 is standard, non-zero are machine specific. (macho_relocation_info_t::r_type) */
899 r_length : 2, /**< Fixup length: 0=KU8, 1=KU16, 2=KU32, 3=KU64. (macho_relocation_info_t::r_length) */
900 r_pcrel : 1, /**< PC (program counter) relative fixup; subtract the fixup address. (macho_relocation_info_t::r_pcrel) */
901 r_scattered : 1; /**< Set if scattered relocation, clear if normal relocation. */
902#elif K_ENDIAN == K_ENDIAN_BIG
903 KU32 r_scattered : 1, /**< Set if scattered relocation, clear if normal relocation. */
904 r_pcrel : 1, /**< PC (program counter) relative fixup; subtract the fixup address. (macho_relocation_info_t::r_pcrel) */
905 r_length : 2, /**< Fixup length: 0=KU8, 1=KU16, 2=KU32, 3=KU64. (macho_relocation_info_t::r_length) */
906 r_type : 4, /**< Relocation type; 0 is standard, non-zero are machine specific. (macho_relocation_info_t::r_type) */
907 r_address : 24; /**< Section relative address of the fixup. (macho_relocation_info_t::r_address) */
908#else
909# error "Neither K_ENDIAN isn't LITTLE or BIG!"
910#endif
911 KI32 r_value; /**< The value the fixup is refering to (without offset added). */
912} scattered_relocation_info_t;
913
914/**
915 * Relocation type values for a generic implementation (for r_type).
916 */
917typedef enum reloc_type_generic
918{
919 GENERIC_RELOC_VANILLA = 0, /**< Standard relocation. */
920 GENERIC_RELOC_PAIR, /**< Follows GENERIC_RELOC_SECTDIFF. */
921 GENERIC_RELOC_SECTDIFF, /**< ??? */
922 GENERIC_RELOC_PB_LA_PTR, /**< Prebound lazy pointer whatever that. */
923 GENERIC_RELOC_LOCAL_SECTDIFF /**< ??? */
924} reloc_type_generic_t;
925
926/**
927 * Relocation type values for AMD64 (for r_type).
928 */
929typedef enum reloc_type_x86_64
930{
931 X86_64_RELOC_UNSIGNED = 0, /**< Absolute address. */
932 X86_64_RELOC_SIGNED, /**< Signed displacement. */
933 X86_64_RELOC_BRANCH, /**< Branch displacement (jmp/call, adj by size). */
934 X86_64_RELOC_GOT_LOAD, /**< GOT entry load. */
935 X86_64_RELOC_GOT, /**< GOT reference. */
936 X86_64_RELOC_SUBTRACTOR, /**< ??. */
937 X86_64_RELOC_SIGNED_1, /**< Signed displacement with a -1 added. */
938 X86_64_RELOC_SIGNED_2, /**< Signed displacement with a -2 added. */
939 X86_64_RELOC_SIGNED_4 /**< Signed displacement with a -4 added. */
940} reloc_type_x86_64_t;
941
942/** @} */
943
944
945/** @} */
946#endif
947
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