source: trunk/include/k/kLdrFmts/mach-o.h@ 20

Last change on this file since 20 was 20, checked in by bird, 17 years ago

mach-o.h: AMD64 relocas and capabilities / features.
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  • Property svn:keywords set to Id Revision
File size: 40.6 KB
Line 
1/* $Id $ */
2/** @file
3 * Mach-0 structures, types and defines.
4 */
5
6#ifndef ___k_kLdrFmts_mach_o_h___
7#define ___k_kLdrFmts_mach_o_h___
8
9#include <k/kDefs.h>
10#include <k/kTypes.h>
11
12
13/** @defgroup grp_mach_o The Mach-O Structures, Types, and Defines.
14 * @{
15 */
16
17
18#ifndef IMAGE_FAT_SIGNATURE
19/** The FAT signature (universal binaries). */
20# define IMAGE_FAT_SIGNATURE KU32_C(0xcafebabe)
21#endif
22#ifndef IMAGE_FAT_SIGNATURE_OE
23/** The FAT signature (universal binaries), other endian. */
24# define IMAGE_FAT_SIGNATURE_OE KU32_C(0xbebafeca)
25#endif
26
27/**
28 * The fat header found at the start of universal binaries.
29 * It is followed by \a nfat_arch numbers of \a fat_arch structures.
30 */
31typedef struct fat_header
32{
33 KU32 magic;
34 KU32 nfat_arch;
35} fat_header_t;
36
37/**
38 * Description of fat file item.
39 */
40typedef struct fat_arch
41{
42 KI32 cputype;
43 KI32 cpusubtype;
44 KU32 offset;
45 KU32 size;
46 KU32 align; /**< Power of 2. */
47} fat_arch_t;
48
49
50
51#ifndef IMAGE_MACHO32_SIGNATURE
52/** The 32-bit Mach-O signature. */
53# define IMAGE_MACHO32_SIGNATURE KU32_C(0xfeedface)
54#endif
55#ifndef IMAGE_MACHO32_SIGNATURE_OE
56/** The 32-bit Mach-O signature, other endian. */
57# define IMAGE_MACHO32_SIGNATURE_OE KU32_C(0xcefaedfe)
58#endif
59#define MH_MAGIC IMAGE_MACHO32_SIGNATURE
60#define MH_CIGAM IMAGE_MACHO32_SIGNATURE_OE
61
62/**
63 * 32-bit Mach-O header.
64 * This is followed by \a ncmds number of load commands.
65 * @see mach_header_64
66 */
67typedef struct mach_header_32
68{
69 KU32 magic;
70 KI32 cputype;
71 KI32 cpusubtype;
72 KU32 filetype;
73 KU32 ncmds;
74 KU32 sizeofcmds;
75 KU32 flags;
76} mach_header_32_t;
77
78
79
80#ifndef IMAGE_MACHO64_SIGNATURE
81/** The 64-bit Mach-O signature. */
82# define IMAGE_MACHO64_SIGNATURE KU32_C(0xfeedfacf)
83#endif
84#ifndef IMAGE_MACHO64_SIGNATURE_OE
85/** The 64-bit Mach-O signature, other endian. */
86# define IMAGE_MACHO64_SIGNATURE_OE KU32_C(0xfefaedfe)
87#endif
88#define MH_MAGIC_64 IMAGE_MACHO64_SIGNATURE
89#define MH_CIGAM_64 IMAGE_MACHO64_SIGNATURE_OE
90
91/**
92 * 64-bit Mach-O header.
93 * This is followed by \a ncmds number of load commands.
94 * @see mach_header
95 */
96typedef struct mach_header_64
97{
98 KU32 magic;
99 KI32 cputype;
100 KI32 cpusubtype;
101 KU32 filetype;
102 KU32 ncmds;
103 KU32 sizeofcmds;
104 KU32 flags;
105 KU32 reserved; /**< (for proper struct and command alignment I guess) */
106} mach_header_64_t;
107
108
109/** @name File types (mach_header_64::filetype, mach_header_32::filetype)
110 * @{
111 */
112#define MH_OBJECT KU32_C(1) /**< Object (relocatable). */
113#define MH_EXECUTE KU32_C(2) /**< Executable (demand paged). */
114#define MH_FVMLIB KU32_C(3) /**< Fixed VM shared library. */
115#define MH_CORE KU32_C(4) /**< Core file. */
116#define MH_PRELOAD KU32_C(5) /**< Preloaded executable. */
117#define MH_DYLIB KU32_C(6) /**< Dynamically bound shared library. */
118#define MH_DYLINKER KU32_C(7) /**< Dynamic linker. */
119#define MH_BUNDLE KU32_C(8) /**< Dymamically bound bundle. */
120#define MH_DYLIB_STUB KU32_C(9) /**< Shared library stub for static linking. */
121#define MH_DSYM KU32_C(10)/**< Debug symbols. */
122
123/** @} */
124
125
126/** @name Mach-O Header flags (mach_header_64::flags, mach_header_32::flags)
127 * @{
128 */
129#define MH_NOUNDEFS KU32_C(0x00000001) /**< No undefined symbols. */
130#define MH_INCRLINK KU32_C(0x00000002) /**< Partial increment link output. */
131#define MH_DYLDLINK KU32_C(0x00000004) /**< Food for the dynamic linker, not for ld. */
132#define MH_BINDATLOAD KU32_C(0x00000008) /**< Bind all undefined symbols at load time. */
133#define MH_PREBOUND KU32_C(0x00000010) /**< Contains prebound undefined symbols. */
134#define MH_SPLIT_SEGS KU32_C(0x00000020) /**< Read-only and read-write segments are split. */
135#define MH_LAZY_INIT KU32_C(0x00000040) /**< Obsolete flag for doing lazy init when data is written. */
136#define MH_TWOLEVEL KU32_C(0x00000080) /**< Uses two-level name space bindings. */
137#define MH_FORCE_FLAT KU32_C(0x00000100) /**< Task: The executable forces all images to use flat name space bindings. */
138#define MH_NOMULTIDEFS KU32_C(0x00000200) /**< No multiple symbol definitions, safe to use two-level namespace hints. */
139#define MH_NOFIXPREBINDING KU32_C(0x00000400) /**< The dynamic linker should not notify the prebinding agent about this executable. */
140#define MH_PREBINDABLE KU32_C(0x00000800) /**< Not prebound, but it can be. Invalid if MH_PREBOUND is set. */
141#define MH_ALLMODSBOUND KU32_C(0x00001000) /**< Binds to all two-level namespace modules of preqs. Requires MH_PREBINDABLE and MH_TWOLEVEL to be set. */
142#define MH_SUBSECTIONS_VIA_SYMBOLS KU32_C(0x00002000) /**< Safe to divide sections into sub-sections via symbols for dead code stripping. */
143#define MH_CANONICAL KU32_C(0x00004000) /**< Canonicalized via unprebind. */
144#define MH_WEAK_DEFINES KU32_C(0x00008000) /**< The (finally) linked image has weak symbols. */
145#define MH_BINDS_TO_WEAK KU32_C(0x00010000) /**< The (finally) linked image uses weak symbols. */
146#define MH_ALLOW_STACK_EXECUTION KU32_C(0x00020000) /**< Task: allow stack execution. (MH_EXECUTE only) */
147#define MH_VALID_FLAGS KU32_C(0x0003ffff) /**< Mask containing the defined flags. */
148/** @} */
149
150
151/** @name CPU types / bits (mach_header_64::cputype, mach_header_32::cputype, fat_arch::cputype)
152 * @{
153 */
154#define CPU_ARCH_MASK KI32_C(0xff000000)
155#define CPU_ARCH_ABI64 KI32_C(0x01000000)
156#define CPU_TYPE_ANY KI32_C(-1)
157#define CPU_TYPE_VAX KI32_C(1)
158#define CPU_TYPE_MC680x0 KI32_C(6)
159#define CPU_TYPE_X86 KI32_C(7)
160#define CPU_TYPE_I386 CPU_TYPE_X86
161#define CPU_TYPE_X86_64 (CPU_TYPE_X86 | CPU_ARCH_ABI64)
162#define CPU_TYPE_MC98000 KI32_C(10)
163#define CPU_TYPE_HPPA KI32_C(11)
164#define CPU_TYPE_MC88000 KI32_C(13)
165#define CPU_TYPE_SPARC KI32_C(14)
166#define CPU_TYPE_I860 KI32_C(15)
167#define CPU_TYPE_POWERPC KI32_C(18)
168#define CPU_TYPE_POWERPC64 (CPU_TYPE_POWERPC | CPU_ARCH_ABI64)
169/** @} */
170
171
172/** @name CPU subtypes (mach_header_64::cpusubtype, mach_header_32::cpusubtype, fat_arch::cpusubtype)
173 * @{ */
174#define CPU_SUBTYPE_MULTIPLE KI32_C(-1)
175#define CPU_SUBTYPE_LITTLE_ENDIAN KI32_C(0) /**< figure this one out. */
176#define CPU_SUBTYPE_BIG_ENDIAN KI32_C(1) /**< ditto */
177
178/* VAX */
179#define CPU_SUBTYPE_VAX_ALL KI32_C(0)
180#define CPU_SUBTYPE_VAX780 KI32_C(1)
181#define CPU_SUBTYPE_VAX785 KI32_C(2)
182#define CPU_SUBTYPE_VAX750 KI32_C(3)
183#define CPU_SUBTYPE_VAX730 KI32_C(4)
184#define CPU_SUBTYPE_UVAXI KI32_C(5)
185#define CPU_SUBTYPE_UVAXII KI32_C(6)
186#define CPU_SUBTYPE_VAX8200 KI32_C(7)
187#define CPU_SUBTYPE_VAX8500 KI32_C(8)
188#define CPU_SUBTYPE_VAX8600 KI32_C(9)
189#define CPU_SUBTYPE_VAX8650 KI32_C(10)
190#define CPU_SUBTYPE_VAX8800 KI32_C(11)
191#define CPU_SUBTYPE_UVAXIII KI32_C(12)
192
193/* MC680xx */
194#define CPU_SUBTYPE_MC680x0_ALL KI32_C(1)
195#define CPU_SUBTYPE_MC68030 KI32_C(1)
196#define CPU_SUBTYPE_MC68040 KI32_C(2)
197#define CPU_SUBTYPE_MC68030_ONLY KI32_C(3)
198
199/* I386 */
200#define CPU_SUBTYPE_INTEL(fam, model) ( (KI32)(((model) << 4) | (fam)) )
201#define CPU_SUBTYPE_INTEL_FAMILY(subtype) ( (subtype) & 0xf )
202#define CPU_SUBTYPE_INTEL_MODEL(subtype) ( (subtype) >> 4 )
203#define CPU_SUBTYPE_INTEL_FAMILY_MAX 0xf
204#define CPU_SUBTYPE_INTEL_MODEL_ALL 0
205
206#define CPU_SUBTYPE_I386_ALL CPU_SUBTYPE_INTEL(3, 0)
207#define CPU_SUBTYPE_386 CPU_SUBTYPE_INTEL(3, 0)
208#define CPU_SUBTYPE_486 CPU_SUBTYPE_INTEL(4, 0)
209#define CPU_SUBTYPE_486SX CPU_SUBTYPE_INTEL(4, 8)
210#define CPU_SUBTYPE_586 CPU_SUBTYPE_INTEL(5, 0)
211#define CPU_SUBTYPE_PENT CPU_SUBTYPE_INTEL(5, 0)
212#define CPU_SUBTYPE_PENTPRO CPU_SUBTYPE_INTEL(6, 1)
213#define CPU_SUBTYPE_PENTII_M3 CPU_SUBTYPE_INTEL(6, 3)
214#define CPU_SUBTYPE_PENTII_M5 CPU_SUBTYPE_INTEL(6, 5)
215#define CPU_SUBTYPE_CELERON CPU_SUBTYPE_INTEL(7, 6)
216#define CPU_SUBTYPE_CELERON_MOBILE CPU_SUBTYPE_INTEL(7, 7)
217#define CPU_SUBTYPE_PENTIUM_3 CPU_SUBTYPE_INTEL(8, 0)
218#define CPU_SUBTYPE_PENTIUM_3_M CPU_SUBTYPE_INTEL(8, 1)
219#define CPU_SUBTYPE_PENTIUM_3_XEON CPU_SUBTYPE_INTEL(8, 2)
220#define CPU_SUBTYPE_PENTIUM_M CPU_SUBTYPE_INTEL(9, 0)
221#define CPU_SUBTYPE_PENTIUM_4 CPU_SUBTYPE_INTEL(10, 0)
222#define CPU_SUBTYPE_PENTIUM_4_M CPU_SUBTYPE_INTEL(10, 1)
223#define CPU_SUBTYPE_ITANIUM CPU_SUBTYPE_INTEL(11, 0)
224#define CPU_SUBTYPE_ITANIUM_2 CPU_SUBTYPE_INTEL(11, 1)
225#define CPU_SUBTYPE_XEON CPU_SUBTYPE_INTEL(12, 0)
226#define CPU_SUBTYPE_XEON_MP CPU_SUBTYPE_INTEL(12, 1)
227
228/* X86 */
229#define CPU_SUBTYPE_X86_ALL KI32_C(3) /* CPU_SUBTYPE_I386_ALL */
230#define CPU_SUBTYPE_X86_64_ALL KI32_C(3) /* CPU_SUBTYPE_I386_ALL */
231#define CPU_SUBTYPE_X86_ARCH1 KI32_C(4) /* CPU_SUBTYPE_I486_ALL */
232
233/* MIPS */
234#define CPU_SUBTYPE_MIPS_ALL KI32_C(0)
235#define CPU_SUBTYPE_MIPS_R2300 KI32_C(1)
236#define CPU_SUBTYPE_MIPS_R2600 KI32_C(2)
237#define CPU_SUBTYPE_MIPS_R2800 KI32_C(3)
238#define CPU_SUBTYPE_MIPS_R2000a KI32_C(4)
239#define CPU_SUBTYPE_MIPS_R2000 KI32_C(5)
240#define CPU_SUBTYPE_MIPS_R3000a KI32_C(6)
241#define CPU_SUBTYPE_MIPS_R3000 KI32_C(7)
242
243/* MC98000 (PowerPC) */
244#define CPU_SUBTYPE_MC98000_ALL KI32_C(0)
245#define CPU_SUBTYPE_MC98601 KI32_C(1)
246
247/* HP-PA */
248#define CPU_SUBTYPE_HPPA_ALL KI32_C(0)
249#define CPU_SUBTYPE_HPPA_7100 KI32_C(0)
250#define CPU_SUBTYPE_HPPA_7100LC KI32_C(1)
251
252/* MC88000 */
253#define CPU_SUBTYPE_MC88000_ALL KI32_C(0)
254#define CPU_SUBTYPE_MC88100 KI32_C(1)
255#define CPU_SUBTYPE_MC88110 KI32_C(2)
256
257/* SPARC */
258#define CPU_SUBTYPE_SPARC_ALL KI32_C(0)
259
260/* I860 */
261#define CPU_SUBTYPE_I860_ALL KI32_C(0)
262#define CPU_SUBTYPE_I860_860 KI32_C(1)
263
264/* PowerPC */
265#define CPU_SUBTYPE_POWERPC_ALL KI32_C(0)
266#define CPU_SUBTYPE_POWERPC_601 KI32_C(1)
267#define CPU_SUBTYPE_POWERPC_602 KI32_C(2)
268#define CPU_SUBTYPE_POWERPC_603 KI32_C(3)
269#define CPU_SUBTYPE_POWERPC_603e KI32_C(4)
270#define CPU_SUBTYPE_POWERPC_603ev KI32_C(5)
271#define CPU_SUBTYPE_POWERPC_604 KI32_C(6)
272#define CPU_SUBTYPE_POWERPC_604e KI32_C(7)
273#define CPU_SUBTYPE_POWERPC_620 KI32_C(8)
274#define CPU_SUBTYPE_POWERPC_750 KI32_C(9)
275#define CPU_SUBTYPE_POWERPC_7400 KI32_C(10)
276#define CPU_SUBTYPE_POWERPC_7450 KI32_C(11)
277#define CPU_SUBTYPE_POWERPC_Max KI32_C(10)
278#define CPU_SUBTYPE_POWERPC_SCVger KI32_C(11)
279#define CPU_SUBTYPE_POWERPC_970 KI32_C(100)
280
281/* Subtype capability / feature bits, added in 10.5. X86 only? */
282#define CPU_SUBTYPE_MASK KU32_C(0xff000000)
283#define CPU_SUBTYPE_LIB64 KU32_C(0x8000000)
284
285/** @} */
286
287
288
289/** @defgroup grp_macho_o_lc Load Commands
290 * @{ */
291
292/**
293 * The load command common core structure.
294 *
295 * After the Mach-O header follows an array of variable sized
296 * load command which all has this header in common.
297 */
298typedef struct load_command
299{
300 KU32 cmd; /**< The load command id. */
301 KU32 cmdsize; /**< The size of the command (including this header). */
302} load_command_t;
303
304/** @name Load Command IDs (load_command::cmd)
305 * @{
306 */
307/** Flag that when set requires the dynamic linker to fail if it doesn't
308 * grok the command. The dynamic linker will otherwise ignore commands it
309 * doesn't understand. Introduced with Mac OS X 10.1. */
310#define LC_REQ_DYLD KU32_C(0x80000000)
311
312#define LC_SEGMENT_32 KU32_C(0x01) /**< Segment to be mapped (32-bit). See segment_command_32. */
313#define LC_SYMTAB KU32_C(0x02) /**< 'stab' symbol table. See symtab_command. */
314#define LC_SYMSEG KU32_C(0x03) /**< Obsoleted gdb symbol table. */
315#define LC_THREAD KU32_C(0x04) /**< Thread. See thread_command. */
316#define LC_UNIXTHREAD KU32_C(0x05) /**< Unix thread (includes stack and stuff). See thread_command. */
317#define LC_LOADFVMLIB KU32_C(0x06) /**< Load a specified fixed VM shared library (obsolete?). See fvmlib_command. */
318#define LC_IDFVMLIB KU32_C(0x07) /**< Fixed VM shared library id (obsolete?). See fvmlib_command. */
319#define LC_IDENT KU32_C(0x08) /**< Identification info (obsolete). See ident_command. */
320#define LC_FVMFILE KU32_C(0x09) /**< Fixed VM file inclusion (internal). See fvmfile_command. */
321#define LC_PREPAGE KU32_C(0x0a) /**< Prepage command (internal). See ?? */
322#define LC_DYSYMTAB KU32_C(0x0b) /**< Symbol table for dynamic linking. See dysymtab_command. */
323#define LC_LOAD_DYLIB KU32_C(0x0c) /**< Load a dynamically linked shared library. See dylib_command. */
324#define LC_ID_DYLIB KU32_C(0x0d) /**< Dynamically linked share library ident. See dylib_command. */
325#define LC_LOAD_DYLINKER KU32_C(0x0e) /**< Load a dynamical link editor. See dylinker_command. */
326#define LC_ID_DYLINKER KU32_C(0x0f) /**< Dynamic link editor ident. See dylinker_command. */
327#define LC_PREBOUND_DYLIB KU32_C(0x10) /**< Prebound modules for dynamically linking of a shared lib. See prebound_dylib_command. */
328#define LC_ROUTINES KU32_C(0x11) /**< Image routines. See routines_command_32. */
329#define LC_SUB_FRAMEWORK KU32_C(0x12) /**< Sub framework. See sub_framework_command. */
330#define LC_SUB_UMBRELLA KU32_C(0x13) /**< Sub umbrella. See sub_umbrella_command. */
331#define LC_SUB_CLIENT KU32_C(0x14) /**< Sub client. See sub_client_command. */
332#define LC_SUB_LIBRARY KU32_C(0x15) /**< Sub library. See sub_library_command. */
333#define LC_TWOLEVEL_HINTS KU32_C(0x16) /**< Two-level namespace lookup hints. See twolevel_hints_command. */
334#define LC_PREBIND_CKSUM KU32_C(0x17) /**< Prebind checksum. See prebind_cksum_command. */
335#define LC_LOAD_WEAK_DYLIB (KU32_C(0x18) | LC_REQ_DYLD) /**< Dylib that can be missing, all symbols weak. See dylib_command. */
336#define LC_SEGMENT_64 KU32_C(0x19) /**< segment to be mapped (64-bit). See segment_command_32. */
337#define LC_ROUTINES_64 KU32_C(0x1a) /**< Image routines (64-bit). See routines_command_32. */
338#define LC_UUID KU32_C(0x1b) /**< The UUID of the object module. See uuid_command. */
339/** @} */
340
341
342/**
343 * Load Command String.
344 */
345typedef struct lc_str
346{
347 /** Offset of the string relative to the load_command structure.
348 * The string is zero-terminated. the size of the load command
349 * is zero padded up to a multiple of 4 bytes. */
350 KU32 offset;
351} lc_str_t;
352
353
354/**
355 * Segment load command (32-bit).
356 */
357typedef struct segment_command_32
358{
359 KU32 cmd; /**< LC_SEGMENT */
360 KU32 cmdsize; /**< sizeof(self) + sections. */
361 char segname[16]; /**< The segment name. */
362 KU32 vmaddr; /**< Memory address of this segment. */
363 KU32 vmsize; /**< Size of this segment. */
364 KU32 fileoff; /**< The file location of the segment. */
365 KU32 filesize; /**< The file size of the segment. */
366 KU32 maxprot; /**< Maximum VM protection. */
367 KU32 initprot; /**< Initial VM protection. */
368 KU32 nsects; /**< Number of section desciptors following this structure. */
369 KU32 flags; /**< Flags (SG_*). */
370} segment_command_32_t;
371
372
373/**
374 * Segment load command (64-bit).
375 * Same as segment_command_32 except 4 members has been blown up to 64-bit.
376 */
377typedef struct segment_command_64
378{
379 KU32 cmd; /**< LC_SEGMENT */
380 KU32 cmdsize; /**< sizeof(self) + sections. */
381 char segname[16]; /**< The segment name. */
382 KU64 vmaddr; /**< Memory address of this segment. */
383 KU64 vmsize; /**< Size of this segment. */
384 KU64 fileoff; /**< The file location of the segment. */
385 KU64 filesize; /**< The file size of the segment. */
386 KU32 maxprot; /**< Maximum VM protection. */
387 KU32 initprot; /**< Initial VM protection. */
388 KU32 nsects; /**< Number of section desciptors following this structure. */
389 KU32 flags; /**< Flags (SG_*). */
390} segment_command_64_t;
391
392/** @name Segment flags (segment_command_64::flags, segment_command_32::flags)
393 * @{ */
394/** Map the file bits in the top end of the memory area for the segment
395 * instead of the low end. Intended for stacks in core dumps.
396 * The part of the segment memory not covered by file bits will be zeroed. */
397#define SG_HIGHVM KU32_C(0x00000001)
398/** This segment is the virtual memory allocated by a fixed VM library.
399 * (Used for overlap checking in the linker.) */
400#define SG_FVMLIB KU32_C(0x00000002)
401/** No relocations for or symbols that's relocated to in this segment.
402 * The segment can therefore safely be replaced. */
403#define SG_NORELOC KU32_C(0x00000004)
404/** The segment is protected.
405 * The first page isn't protected if it starts at file offset 0
406 * (so that the mach header and this load command can be easily mapped). */
407#define SG_PROTECTED_VERSION_1 KU32_C(0x00000008)
408/** @} */
409
410
411/**
412 * 32-bit section (part of a segment load command).
413 */
414typedef struct section_32
415{
416 char sectname[16]; /**< The section name. */
417 char segname[16]; /**< The name of the segment this section goes into. */
418 KU32 addr; /**< The memory address of this section. */
419 KU32 size; /**< The size of this section. */
420 KU32 offset; /**< The file offset of this section. */
421 KU32 align; /**< The section alignment (**2). */
422 KU32 reloff; /**< The file offset of the relocations. */
423 KU32 nreloc; /**< The number of relocations. */
424 KU32 flags; /**< The section flags; section type and attribs */
425 KU32 reserved1; /**< Reserved / offset / index. */
426 KU32 reserved2; /**< Reserved / count / sizeof. */
427} section_32_t;
428
429/**
430 * 64-bit section (part of a segment load command).
431 */
432typedef struct section_64
433{
434 char sectname[16]; /**< The section name. */
435 char segname[16]; /**< The name of the segment this section goes into. */
436 KU64 addr; /**< The memory address of this section. */
437 KU64 size; /**< The size of this section. */
438 KU32 offset; /**< The file offset of this section. */
439 KU32 align; /**< The section alignment (**2). */
440 KU32 reloff; /**< The file offset of the relocations. */
441 KU32 nreloc; /**< The number of relocations. */
442 KU32 flags; /**< The section flags; section type and attribs */
443 KU32 reserved1; /**< Reserved / offset / index. */
444 KU32 reserved2; /**< Reserved / count / sizeof. */
445 KU32 reserved3; /**< (Just) Reserved. */
446} section_64_t;
447
448/** @name Section flags (section_64::flags, section_32::flags)
449 * @{
450 */
451/** Section type mask. */
452#define SECTION_TYPE KU32_C(0x000000ff)
453/** Regular section. */
454#define S_REGULAR 0x0
455/** Zero filled section. */
456#define S_ZEROFILL 0x1
457/** C literals. */
458#define S_CSTRING_LITERALS 0x2
459/** 4 byte literals. */
460#define S_4BYTE_LITERALS 0x3
461/** 8 byte literals. */
462#define S_8BYTE_LITERALS 0x4
463/** Pointer to literals. */
464#define S_LITERAL_POINTERS 0x5
465/** Section containing non-lazy symbol pointers.
466 * Reserved1 == start index in the indirect symbol table. */
467#define S_NON_LAZY_SYMBOL_POINTERS 0x6
468/** Section containing lazy symbol pointers.
469 * Reserved1 == start index in the indirect symbol table. */
470#define S_LAZY_SYMBOL_POINTERS 0x7
471/** Section containing symbol stubs.
472 * Reserved2 == stub size. */
473#define S_SYMBOL_STUBS 0x8
474/** Section containing function pointers for module initialization. . */
475#define S_MOD_INIT_FUNC_POINTERS 0x9
476/** Section containing function pointers for module termination. . */
477#define S_MOD_TERM_FUNC_POINTERS 0xa
478/** Section containing symbols that are to be coalesced. */
479#define S_COALESCED 0xb
480/** Zero filled section that be larger than 4GB. */
481#define S_GB_ZEROFILL 0xc
482/** Section containing pairs of function pointers for interposing. */
483#define S_INTERPOSING 0xd
484/** 16 byte literals. */
485#define S_16BYTE_LITERALS 0xe
486
487/** Section attribute mask. */
488#define SECTION_ATTRIBUTES KU32_C(0xffffff00)
489
490/** User settable attribute mask. */
491#define SECTION_ATTRIBUTES_USR KU32_C(0xff000000)
492/** Pure instruction (code). */
493#define S_ATTR_PURE_INSTRUCTIONS KU32_C(0x80000000)
494/** ranlib, ignore my symbols... */
495#define S_ATTR_NO_TOC KU32_C(0x40000000)
496/** May strip static symbols when linking int a MH_DYLDLINK file. */
497#define S_ATTR_STRIP_STATIC_SYMS KU32_C(0x20000000)
498/** No dead stripping. */
499#define S_ATTR_NO_DEAD_STRIP KU32_C(0x10000000)
500/** Live support. */
501#define S_ATTR_LIVE_SUPPORT KU32_C(0x08000000)
502/** Contains self modifying code (generally i386 code stub for dyld). */
503#define S_ATTR_SELF_MODIFYING_CODE KU32_C(0x04000000)
504/** Debug info (DWARF usually). */
505#define S_ATTR_DEBUG KU32_C(0x02000000)
506
507/** System settable attribute mask. */
508#define SECTION_ATTRIBUTES_SYS KU32_C(0x00ffff00)
509/** Contains some instructions (code). */
510#define S_ATTR_SOME_INSTRUCTIONS KU32_C(0x00000400)
511/** Has external relocations. */
512#define S_ATTR_EXT_RELOC KU32_C(0x00000200)
513/** Has internal (local) relocations. */
514#define S_ATTR_LOC_RELOC KU32_C(0x00000100)
515/** @} */
516
517/** @name Known Segment and Section Names.
518 * Some of these implies special linker behaviour.
519 * @{
520 */
521/** Page zero - not-present page for catching invalid access. (MH_EXECUTE typically) */
522#define SEG_PAGEZERO "__PAGEZERO"
523/** Traditional UNIX text segment.
524 * Defaults to R-X. */
525#define SEG_TEXT "__TEXT"
526/** The text part of SEG_TEXT. */
527#define SECT_TEXT "__text"
528/** The fvmlib initialization. */
529#define SECT_FVMLIB_INIT0 "__fvmlib_init0"
530/** The section following the fvmlib initialization. */
531#define SECT_FVMLIB_INIT1 "__fvmlib_init1"
532/** The traditional UNIX data segment. (DGROUP to DOS and OS/2 people.) */
533#define SEG_DATA "__DATA"
534/** The initialized data section. */
535#define SECT_DATA "__data"
536/** The uninitialized data section. */
537#define SECT_BSS "__bss"
538/** The common symbol section. */
539#define SECT_COMMON "__common"
540/** Objective-C runtime segment. */
541#define SEG_OBJC "__OBJC"
542/** Objective-C symbol table section. */
543#define SECT_OBJC_SYMBOLS "__symbol_table"
544/** Objective-C module information section. */
545#define SECT_OBJC_MODULES "__module_info"
546/** Objective-C string table section. */
547#define SECT_OBJC_STRINGS "__selector_strs"
548/** Objective-C string table section. */
549#define SECT_OBJC_REFS "__selector_refs"
550/** Icon segment. */
551#define SEG_ICON "__ICON"
552/** The icon headers. */
553#define SECT_ICON_HEADER "__header"
554/** The icons in the TIFF format. */
555#define SECT_ICON_TIFF "__tiff"
556/** ld -seglinkedit segment containing all the structs create and maintained
557 * by the linker. MH_EXECUTE and MH_FVMLIB only. */
558#define SEG_LINKEDIT "__LINKEDIT"
559/** The unix stack segment. */
560#define SEG_UNIXSTACK "__UNIXSTACK"
561/** The segment for the self modifying code for dynamic linking.
562 * Implies RWX permissions. */
563#define SEG_IMPORT "__IMPORT"
564/** @} */
565
566
567/** @todo fvmlib */
568/** @todo fvmlib_command (LC_IDFVMLIB or LC_LOADFVMLIB) */
569/** @todo dylib */
570/** @todo dylib_command (LC_ID_DYLIB, LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB) */
571/** @todo sub_framework_command (LC_SUB_FRAMEWORK) */
572/** @todo sub_client_command (LC_SUB_CLIENT) */
573/** @todo sub_umbrella_command (LC_SUB_UMBRELLA) */
574/** @todo sub_library_command (LC_SUB_LIBRARY) */
575/** @todo prebound_dylib_command (LC_PREBOUND_DYLIB) */
576/** @todo dylinker_command (LC_ID_DYLINKER or LC_LOAD_DYLINKER) */
577
578
579/**
580 * Thread command.
581 *
582 * State description of a thread that is to be created. The description
583 * is made up of a number of state structures preceded by a 32-bit flavor
584 * and 32-bit count field stating the kind of stat structure and it's size
585 * in KU32 items respecitvly.
586 *
587 * LC_UNIXTHREAD differs from LC_THREAD in that it implies stack creation
588 * and that it's started with the typical main(int, char **, char **) frame
589 * on the stack.
590 */
591typedef struct thread_command
592{
593 KU32 cmd; /**< LC_UNIXTHREAD or LC_THREAD. */
594 KU32 cmdsize; /**< The size of the command (including this header). */
595} thread_command_t;
596
597
598/** @todo routines_command (LC_ROUTINES) */
599/** @todo routines_command_64 (LC_ROUTINES_64) */
600
601
602/**
603 * Symbol table command.
604 * Contains a.out style symbol table with some tricks.
605 */
606typedef struct symtab_command
607{
608 KU32 cmd; /**< LC_SYMTAB */
609 KU32 cmdsize; /** sizeof(symtab_command_t) */
610 KU32 symoff; /** The file offset of the symbol table. */
611 KU32 nsyms; /** The number of symbols in the symbol table. */
612 KU32 stroff; /** The file offset of the string table. */
613 KU32 strsize; /** The size of the string table. */
614} symtab_command_t;
615
616
617/** @todo dysymtab_command (LC_DYSYMTAB) */
618/** @todo dylib_table_of_contents */
619/** @todo dylib_module_32 */
620/** @todo dylib_module_64 */
621/** @todo dylib_reference */
622/** @todo twolevel_hints_command (LC_TWOLEVEL_HINTS) */
623/** @todo twolevel_hint */
624/** @todo prebind_cksum_command (LC_PREBIND_CKSUM) */
625
626
627/**
628 * UUID generated by ld.
629 */
630typedef struct uuid_command
631{
632 KU32 cmd; /**< LC_UUID */
633 KU32 cmdsize; /**< sizeof(uuid_command_t) */
634 KU8 uuid[16]; /** The UUID bytes. */
635} uuid_command_t;
636
637
638/** @todo symseg_command (LC_SYMSEG) */
639/** @todo ident_command (LC_IDENT) */
640/** @todo fvmfile_command (LC_FVMFILE) */
641
642/** @} */
643
644
645
646/** @defgroup grp_macho_o_syms Symbol Table
647 * @{ */
648
649/**
650 * The 32-bit Mach-O version of the nlist structure.
651 *
652 * This differs from the a.out nlist struct in that the unused n_other field
653 * was renamed to n_sect and used for keeping the relevant section number.
654 * @remark This structure is not name mach_nlist_32 in the Apple headers, but nlist.
655 */
656typedef struct macho_nlist_32
657{
658 union
659 {
660 KI32 n_strx; /**< Offset (index) into the string table. 0 means "". */
661 } n_un;
662 KU8 n_type; /**< Symbol type. */
663 KU8 n_sect; /**< Section number of NO_SECT. */
664 KI16 n_desc; /**< Type specific, debug info details mostly.*/
665 KU32 n_value; /**< The symbol value or stab offset. */
666} macho_nlist_32_t;
667
668
669/**
670 * The 64-bit Mach-O version of the nlist structure.
671 * @see macho_nlist_32
672 */
673typedef struct macho_nlist_64
674{
675 union
676 {
677 KU32 n_strx; /**< Offset (index) into the string table. 0 means "". */
678 } n_un;
679 KU8 n_type; /**< Symbol type. */
680 KU8 n_sect; /**< Section number of NO_SECT. */
681 KI16 n_desc; /**< Type specific, debug info details mostly.*/
682 KU64 n_value; /**< The symbol value or stab offset. */
683} macho_nlist_64_t;
684
685
686/** @name Symbol Type Constants (macho_nlist_32_t::n_type, macho_nlist_64_t::n_type)
687 *
688 * In the Mach-O world n_type is somewhat similar to a.out, meaning N_EXT, N_UNDF, N_ABS
689 * and the debug symbols are essentially the same, but the remaining stuff is different.
690 * The main reason for this is that the encoding of section has been moved to n_sect
691 * to permit up to 255 sections instead of the fixed 3 a.out sections (not counting
692 * the abs symbols and set vectors).
693 *
694 * To avoid confusion with a.out the Mach-O constants has been fitted with a MACHO_
695 * prefix here.
696 *
697 * Common symbols (aka communal symbols and comdefs) are represented by
698 * n_type = MACHO_N_EXT | MACHO_N_UNDF, n_sect = NO_SECT and n_value giving
699 * the size.
700 *
701 *
702 * Symbol table entries can be inserted directly in the assembly code using
703 * this notation:
704 * @code
705 * .stabs "n_name", n_type, n_sect, n_desc, n_value
706 * @endcode
707 *
708 * (1) The line number is optional, GCC doesn't set it.
709 * (2) The type is optional, GCC doesn't set it.
710 * (3) The binutil header is "skeptical" about the line. I'm skeptical about the whole thing... :-)
711 * (M) Mach-O specific?
712 * (S) Sun specific?
713 * @{
714 */
715
716/* Base masks. */
717#define MACHO_N_EXT KU8_C(0x01) /**< External symbol (when set) (N_EXT). */
718#define MACHO_N_TYPE KU8_C(0x0e) /**< Symbol type (N_TYPE without the 8th bit). */
719#define MACHO_N_PEXT KU8_C(0x10) /**< Private extern symbol (when set). (M) */
720#define MACHO_N_STAB KU8_C(0xe0) /**< Debug symbol mask (N_STAB). */
721
722/* MACHO_N_TYPE values. */
723#define MACHO_N_UNDF KU8_C(0x00) /**< MACHO_N_TYPE: Undefined symbol (N_UNDF). n_sect = NO_SECT. */
724#define MACHO_N_ABS KU8_C(0x02) /**< MACHO_N_TYPE: Absolute symbol (N_UNDF). n_sect = NO_SECT. */
725#define MACHO_N_INDR KU8_C(0x0a) /**< MACHO_N_TYPE: Indirect symbol, n_value is the index of the symbol. (M) */
726#define MACHO_N_PBUD KU8_C(0x0c) /**< MACHO_N_TYPE: Prebound undefined symbo (defined in a dylib). (M) */
727#define MACHO_N_SECT KU8_C(0x0e) /**< MACHO_N_TYPE: Defined in the section given by n_sects. (M) */
728
729/* Debug symbols. */
730#define MACHO_N_GSYM KU8_C(0x20) /**< Global variable. "name",, NO_SECT, type, 0 (2) */
731#define MACHO_N_FNAME KU8_C(0x22) /**< Function name (F77). "name",, NO_SECT, 0, 0 */
732#define MACHO_N_FUN KU8_C(0x24) /**< Function / text var. "name",, section, line, address (1) */
733#define MACHO_N_STSYM KU8_C(0x26) /**< Static data symbol. "name",, section, type, address (2) */
734#define MACHO_N_LCSYM KU8_C(0x28) /**< static bss symbol. "name",, section, type, address (2) */
735 /* omits N_MAIN and N_ROSYM. */
736#define MACHO_N_BNSYM KU8_C(0x2e) /**< Begin nsect symbol. 0,, section, 0, address (M) */
737#define MACHO_N_PC KU8_C(0x30) /**< Global pascal symbol. "name",, NO_SECT, subtype?, line (3) */
738 /* omits N_NSYMS, N_NOMAP and N_OBJ. */
739#define MACHO_N_OPT KU8_C(0x3c) /**< Options for the debugger related to the language of the
740 source file. "options?",,,, */
741#define MACHO_N_RSYM KU8_C(0x40) /**< Register variable. "name",, NO_SECT, type, register */
742 /* omits N_M2C */
743#define MACHO_N_SLINE KU8_C(0x44) /**< Source line. 0,, section, line, address */
744 /* omits N_DSLINE, N_BSLINE / N_BROWS, N_DEFD and N_FLINE. */
745#define MACHO_N_ENSYM KU8_C(0x4e) /**< End nsect symbol. 0,, section, 0, address (M) */
746 /* omits N_EHDECL / N_MOD2 and N_CATCH. */
747#define MACHO_N_SSYM KU8_C(0x60) /**< Struct/union element. "name",, NO_SECT, type, offset */
748 /* omits N_ENDM */
749#define MACHO_N_SO KU8_C(0x64) /**< Source file name. "fname",, section, 0, address */
750#define MACHO_N_OSO KU8_C(0x66) /**< Object file name. "fname",, 0, 0, st_mtime (M?) */
751 /* omits N_ALIAS */
752#define MACHO_N_LSYM KU8_C(0x80) /**< Stack variable. "name",, NO_SECT, type, frame_offset */
753#define MACHO_N_BINCL KU8_C(0x82) /**< Begin #include. "fname",, NO_SECT, 0, sum? */
754#define MACHO_N_SOL KU8_C(0x84) /**< #included file. "fname",, section, 0, start_address (S) */
755#define MACHO_N_PARAMS KU8_C(0x86) /**< Compiler params. "params",, NO_SECT, 0, 0 */
756#define MACHO_N_VERSION KU8_C(0x88) /**< Compiler version. "version",, NO_SECT, 0, 0 */
757#define MACHO_N_OLEVEL KU8_C(0x8A) /**< Compiler -O level. "level",, NO_SECT, 0, 0 */
758#define MACHO_N_PSYM KU8_C(0xa0) /**< Parameter variable. "name",, NO_SECT, type, frame_offset */
759#define MACHO_N_EINCL KU8_C(0xa2) /**< End #include. "fname",, NO_SECT, 0, 0 (S) */
760#define MACHO_N_ENTRY KU8_C(0xa4) /**< Alternate entry point. "name",, section, line, address */
761#define MACHO_N_LBRAC KU8_C(0xc0) /**< Left bracket. 0,, NO_SECT, nesting_level, address */
762#define MACHO_N_EXCL KU8_C(0xc2) /**< Deleted include file. "fname",, NO_SECT, 0, sum? (S) */
763 /* omits N_SCOPE */
764#define MACHO_N_RBRAC KU8_C(0xe0) /**< Right bracket. 0,, NO_SECT, nesting_level, address */
765#define MACHO_N_BCOMM KU8_C(0xe2) /**< Begin common. "name",, NO_SECT?, 0, 0 */
766#define MACHO_N_ECOMM KU8_C(0xe4) /**< End common. "name",, section, 0, 0 */
767#define MACHO_N_ECOML KU8_C(0xe8) /**< End local common. 0,, section, 0, address */
768#define MACHO_N_LENG KU8_C(0xfe) /**< Length-value of the preceding entry.
769 "name",, NO_SECT, 0, length */
770
771/** @} */
772
773/** @name Symbol Description Bits (macho_nlist_32_t::n_desc, macho_nlist_64_t::n_desc)
774 *
775 * Mach-O puts the n_desc field to a number of uses, like lazy binding , library
776 * ordinal numbers for -twolevel_namespace, stripping and weak symbol handling.
777 *
778 * @remark The REFERENCE_FLAGS_* are really not flags in the normal sense (bit),
779 * they are more like enum values.
780 * @{
781 */
782
783#define REFERENCE_TYPE KU16_C(0x000f) /**< The reference type mask. */
784#define REFERENCE_FLAG_UNDEFINED_NON_LAZY 0 /**< Normal undefined symbol. */
785#define REFERENCE_FLAG_UNDEFINED_LAZY 1 /**< Lazy undefined symbol. */
786#define REFERENCE_FLAG_DEFINED 2 /**< Defined symbol (dynamic linking). */
787#define REFERENCE_FLAG_PRIVATE_DEFINED 3 /**< Defined private symbol (dynamic linking). */
788#define REFERENCE_FLAG_PRIVATE_UNDEFINED_NON_LAZY 4 /**< Normal undefined private symbol. */
789#define REFERENCE_FLAG_PRIVATE_UNDEFINED_LAZY 5 /**< Lazy undefined private symbol. */
790
791#define REFERENCED_DYNAMICALLY KU16_C(0x0010) /**< Don't strip. */
792
793
794/** Get the dynamic library ordinal. */
795#define GET_LIBRARY_ORDINAL(n_desc) \
796 (((n_desc) >> 8) & 0xff)
797/** Set the dynamic library ordinal. */
798#define SET_LIBRARY_ORDINAL(n_desc, ordinal) \
799 (n_desc) = (((n_desc) & 0xff) | (((ordinal) & 0xff) << 8))
800#define SELF_LIBRARY_ORDINAL 0x00 /**< Special ordinal for refering to onself. */
801#define MAX_LIBRARY_ORDINAL 0xfd /**< Maximum ordinal number. */
802#define DYNAMIC_LOOKUP_ORDINAL 0xfe /**< Special ordinal number for dynamic lookup. (Mac OS X 10.3 and later) */
803#define EXECUTABLE_ORDINAL 0xff /**< Special ordinal number for the executable. */
804
805
806/** Only MH_OBJECT: Never dead strip me! */
807#define N_NO_DEAD_STRIP KU16_C(0x0020)
808/** Not MH_OBJECT: Discarded symbol. */
809#define N_DESC_DISCARDED KU16_C(0x0020)
810/** Weak external symbol. Symbol can be missing, in which case it's will have the value 0. */
811#define N_WEAK_REF KU16_C(0x0040)
812/** Weak symbol definition. The symbol can be overridden by another weak
813 * symbol already present or by a non-weak (strong) symbol definition.
814 * Currently only supported for coalesed symbols.
815 * @remark This bit means something differently for undefined symbols, see N_REF_TO_WEAK.
816 */
817#define N_WEAK_DEF KU16_C(0x0080)
818/** Reference to a weak symbol, resolve using flat namespace searching.
819 * @remark This bit means something differently for defined symbols, see N_WEAK_DEF. */
820#define N_REF_TO_WEAK KU16_C(0x0080)
821
822/** @} */
823
824/** @} */
825
826
827/** @defgroup grp_macho_o_relocs Relocations
828 * @{ */
829
830/**
831 * Relocation entry.
832 *
833 * Differs from a.out in the meaning of r_symbolnum when r_extern=0 and
834 * that r_pad is made into r_type.
835 *
836 * @remark This structure and type has been prefixed with macho_ to avoid
837 * confusion with the original a.out type.
838 */
839typedef struct macho_relocation_info
840{
841 KI32 r_address; /**< Section relative address of the fixup.
842 The top bit (signed) indicates that this is a scattered
843 relocation if set, see scattered_relocation_info_t. */
844 KU32 r_symbolnum : 24, /**< r_extern=1: Symbol table index, relocate with the address of this symbol.
845 r_extern=0: Section ordinal, relocate with the address of this section. */
846 r_pcrel : 1, /**< PC (program counter) relative fixup; subtract the fixup address. */
847 r_length : 2, /**< Fixup length: 0=KU8, 1=KU16, 2=KU32, 3=KU64. */
848 r_extern : 1, /**< External or internal fixup, decides the r_symbolnum interpretation.. */
849 r_type : 4; /**< Relocation type; 0 is standard, non-zero are machine specific. */
850} macho_relocation_info_t;
851
852/** Special section ordinal value for absolute relocations. */
853#define R_ABS 0
854
855/** Flag in r_address indicating that the relocation is of the
856 * scattered_relocation_info_t kind and not macho_relocation_info_t. */
857#define R_SCATTERED KU32_C(0x80000000)
858
859/**
860 * Scattered relocation.
861 *
862 * This is a hack mainly for RISC machines which restricts section size
863 * to 16MB among other things.
864 *
865 * The reason for the big/little endian differences here is of course because
866 * of the R_SCATTERED mask and the way bitfields are implemented by the
867 * C/C++ compilers.
868 */
869typedef struct scattered_relocation_info
870{
871#if K_ENDIAN == K_ENDIAN_LITTLE
872 KU32 r_address : 24, /**< Section relative address of the fixup. (macho_relocation_info_t::r_address) */
873 r_type : 4, /**< Relocation type; 0 is standard, non-zero are machine specific. (macho_relocation_info_t::r_type) */
874 r_length : 2, /**< Fixup length: 0=KU8, 1=KU16, 2=KU32, 3=KU64. (macho_relocation_info_t::r_length) */
875 r_pcrel : 1, /**< PC (program counter) relative fixup; subtract the fixup address. (macho_relocation_info_t::r_pcrel) */
876 r_scattered : 1; /**< Set if scattered relocation, clear if normal relocation. */
877#elif K_ENDIAN == K_ENDIAN_BIG
878 KU32 r_scattered : 1, /**< Set if scattered relocation, clear if normal relocation. */
879 r_pcrel : 1, /**< PC (program counter) relative fixup; subtract the fixup address. (macho_relocation_info_t::r_pcrel) */
880 r_length : 2, /**< Fixup length: 0=KU8, 1=KU16, 2=KU32, 3=KU64. (macho_relocation_info_t::r_length) */
881 r_type : 4, /**< Relocation type; 0 is standard, non-zero are machine specific. (macho_relocation_info_t::r_type) */
882 r_address : 24; /**< Section relative address of the fixup. (macho_relocation_info_t::r_address) */
883#else
884# error "Neither K_ENDIAN isn't LITTLE or BIG!"
885#endif
886 KI32 r_value; /**< The value the fixup is refering to (without offset added). */
887} scattered_relocation_info_t;
888
889/**
890 * Relocation type values for a generic implementation (for r_type).
891 */
892typedef enum reloc_type_generic
893{
894 GENERIC_RELOC_VANILLA = 0, /**< Standard relocation. */
895 GENERIC_RELOC_PAIR, /**< Follows GENERIC_RELOC_SECTDIFF. */
896 GENERIC_RELOC_SECTDIFF, /**< ??? */
897 GENERIC_RELOC_PB_LA_PTR, /**< Prebound lazy pointer whatever that. */
898 GENERIC_RELOC_LOCAL_SECTDIFF /**< ??? */
899} reloc_type_generic_t;
900
901/**
902 * Relocation type values for AMD64 (for r_type).
903 */
904typedef enum reloc_type_x86_64
905{
906 X86_64_RELOC_UNSIGNED = 0, /**< Absolute address. */
907 X86_64_RELOC_SIGNED, /**< Signed displacement. */
908 X86_64_RELOC_BRANCH, /**< Branch displacement (jmp/call, adj by size). */
909 X86_64_RELOC_GOT_LOAD, /**< GOT entry load. */
910 X86_64_RELOC_GOT, /**< GOT reference. */ // other GOT references
911 X86_64_RELOC_SUBTRACTOR, /**< ??. */
912 X86_64_RELOC_SIGNED_1, /**< Signed displacement with a -1 added. */
913 X86_64_RELOC_SIGNED_2, /**< Signed displacement with a -2 added. */
914 X86_64_RELOC_SIGNED_4 /**< Signed displacement with a -4 added. */
915} reloc_type_x86_64_t;
916
917/** @} */
918
919
920/** @} */
921#endif
922
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