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c20d527134
llvm-mirror/include/llvm/Support/MachO.h
David Majnemer c20d527134 MachO: Add comments describing section flags/attrs 
When pruning superfluous MachO structure definitions, I chose to keep
the most generically useful which is why Support's definitions won over
the ones in MC.

However, the MC copy had some useful comments describing some of the
field values.

Bring these back to the copy in Support.  While doing this, fill in some
of the underdocumented definitions as well.

llvm-svn: 209066
2014-05-17 07:36:36 +00:00

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//===-- llvm/Support/MachO.h - The MachO file format ------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines manifest constants for the MachO object file format.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_MACHO_H
#define LLVM_SUPPORT_MACHO_H
#include "llvm/Support/Compiler.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/Host.h"
namespace llvm {
namespace MachO {
// Enums from <mach-o/loader.h>
enum : uint32_t {
// Constants for the "magic" field in llvm::MachO::mach_header and
// llvm::MachO::mach_header_64
MH_MAGIC = 0xFEEDFACEu,
MH_CIGAM = 0xCEFAEDFEu,
MH_MAGIC_64 = 0xFEEDFACFu,
MH_CIGAM_64 = 0xCFFAEDFEu,
FAT_MAGIC = 0xCAFEBABEu,
FAT_CIGAM = 0xBEBAFECAu
};
enum HeaderFileType {
// Constants for the "filetype" field in llvm::MachO::mach_header and
// llvm::MachO::mach_header_64
MH_OBJECT = 0x1u,
MH_EXECUTE = 0x2u,
MH_FVMLIB = 0x3u,
MH_CORE = 0x4u,
MH_PRELOAD = 0x5u,
MH_DYLIB = 0x6u,
MH_DYLINKER = 0x7u,
MH_BUNDLE = 0x8u,
MH_DYLIB_STUB = 0x9u,
MH_DSYM = 0xAu,
MH_KEXT_BUNDLE = 0xBu
};
enum {
// Constant bits for the "flags" field in llvm::MachO::mach_header and
// llvm::MachO::mach_header_64
MH_NOUNDEFS = 0x00000001u,
MH_INCRLINK = 0x00000002u,
MH_DYLDLINK = 0x00000004u,
MH_BINDATLOAD = 0x00000008u,
MH_PREBOUND = 0x00000010u,
MH_SPLIT_SEGS = 0x00000020u,
MH_LAZY_INIT = 0x00000040u,
MH_TWOLEVEL = 0x00000080u,
MH_FORCE_FLAT = 0x00000100u,
MH_NOMULTIDEFS = 0x00000200u,
MH_NOFIXPREBINDING = 0x00000400u,
MH_PREBINDABLE = 0x00000800u,
MH_ALLMODSBOUND = 0x00001000u,
MH_SUBSECTIONS_VIA_SYMBOLS = 0x00002000u,
MH_CANONICAL = 0x00004000u,
MH_WEAK_DEFINES = 0x00008000u,
MH_BINDS_TO_WEAK = 0x00010000u,
MH_ALLOW_STACK_EXECUTION = 0x00020000u,
MH_ROOT_SAFE = 0x00040000u,
MH_SETUID_SAFE = 0x00080000u,
MH_NO_REEXPORTED_DYLIBS = 0x00100000u,
MH_PIE = 0x00200000u,
MH_DEAD_STRIPPABLE_DYLIB = 0x00400000u
};
enum : uint32_t {
// Flags for the "cmd" field in llvm::MachO::load_command
LC_REQ_DYLD = 0x80000000u
};
enum LoadCommandType : uint32_t {
// Constants for the "cmd" field in llvm::MachO::load_command
LC_SEGMENT = 0x00000001u,
LC_SYMTAB = 0x00000002u,
LC_SYMSEG = 0x00000003u,
LC_THREAD = 0x00000004u,
LC_UNIXTHREAD = 0x00000005u,
LC_LOADFVMLIB = 0x00000006u,
LC_IDFVMLIB = 0x00000007u,
LC_IDENT = 0x00000008u,
LC_FVMFILE = 0x00000009u,
LC_PREPAGE = 0x0000000Au,
LC_DYSYMTAB = 0x0000000Bu,
LC_LOAD_DYLIB = 0x0000000Cu,
LC_ID_DYLIB = 0x0000000Du,
LC_LOAD_DYLINKER = 0x0000000Eu,
LC_ID_DYLINKER = 0x0000000Fu,
LC_PREBOUND_DYLIB = 0x00000010u,
LC_ROUTINES = 0x00000011u,
LC_SUB_FRAMEWORK = 0x00000012u,
LC_SUB_UMBRELLA = 0x00000013u,
LC_SUB_CLIENT = 0x00000014u,
LC_SUB_LIBRARY = 0x00000015u,
LC_TWOLEVEL_HINTS = 0x00000016u,
LC_PREBIND_CKSUM = 0x00000017u,
LC_LOAD_WEAK_DYLIB = 0x80000018u,
LC_SEGMENT_64 = 0x00000019u,
LC_ROUTINES_64 = 0x0000001Au,
LC_UUID = 0x0000001Bu,
LC_RPATH = 0x8000001Cu,
LC_CODE_SIGNATURE = 0x0000001Du,
LC_SEGMENT_SPLIT_INFO = 0x0000001Eu,
LC_REEXPORT_DYLIB = 0x8000001Fu,
LC_LAZY_LOAD_DYLIB = 0x00000020u,
LC_ENCRYPTION_INFO = 0x00000021u,
LC_DYLD_INFO = 0x00000022u,
LC_DYLD_INFO_ONLY = 0x80000022u,
LC_LOAD_UPWARD_DYLIB = 0x80000023u,
LC_VERSION_MIN_MACOSX = 0x00000024u,
LC_VERSION_MIN_IPHONEOS = 0x00000025u,
LC_FUNCTION_STARTS = 0x00000026u,
LC_DYLD_ENVIRONMENT = 0x00000027u,
LC_MAIN = 0x80000028u,
LC_DATA_IN_CODE = 0x00000029u,
LC_SOURCE_VERSION = 0x0000002Au,
LC_DYLIB_CODE_SIGN_DRS = 0x0000002Bu,
// 0x0000002Cu,
LC_LINKER_OPTIONS = 0x0000002Du,
LC_LINKER_OPTIMIZATION_HINT = 0x0000002Eu
};
enum : uint32_t {
// Constant bits for the "flags" field in llvm::MachO::segment_command
SG_HIGHVM = 0x1u,
SG_FVMLIB = 0x2u,
SG_NORELOC = 0x4u,
SG_PROTECTED_VERSION_1 = 0x8u,
// Constant masks for the "flags" field in llvm::MachO::section and
// llvm::MachO::section_64
SECTION_TYPE = 0x000000ffu, // SECTION_TYPE
SECTION_ATTRIBUTES = 0xffffff00u, // SECTION_ATTRIBUTES
SECTION_ATTRIBUTES_USR = 0xff000000u, // SECTION_ATTRIBUTES_USR
SECTION_ATTRIBUTES_SYS = 0x00ffff00u // SECTION_ATTRIBUTES_SYS
};
/// These are the section type and attributes fields. A MachO section can
/// have only one Type, but can have any of the attributes specified.
enum SectionType : uint32_t {
// Constant masks for the "flags[7:0]" field in llvm::MachO::section and
// llvm::MachO::section_64 (mask "flags" with SECTION_TYPE)
/// S_REGULAR - Regular section.
S_REGULAR = 0x00u,
/// S_ZEROFILL - Zero fill on demand section.
S_ZEROFILL = 0x01u,
/// S_CSTRING_LITERALS - Section with literal C strings.
S_CSTRING_LITERALS = 0x02u,
/// S_4BYTE_LITERALS - Section with 4 byte literals.
S_4BYTE_LITERALS = 0x03u,
/// S_8BYTE_LITERALS - Section with 8 byte literals.
S_8BYTE_LITERALS = 0x04u,
/// S_LITERAL_POINTERS - Section with pointers to literals.
S_LITERAL_POINTERS = 0x05u,
/// S_NON_LAZY_SYMBOL_POINTERS - Section with non-lazy symbol pointers.
S_NON_LAZY_SYMBOL_POINTERS = 0x06u,
/// S_LAZY_SYMBOL_POINTERS - Section with lazy symbol pointers.
S_LAZY_SYMBOL_POINTERS = 0x07u,
/// S_SYMBOL_STUBS - Section with symbol stubs, byte size of stub in
/// the Reserved2 field.
S_SYMBOL_STUBS = 0x08u,
/// S_MOD_INIT_FUNC_POINTERS - Section with only function pointers for
/// initialization.
S_MOD_INIT_FUNC_POINTERS = 0x09u,
/// S_MOD_TERM_FUNC_POINTERS - Section with only function pointers for
/// termination.
S_MOD_TERM_FUNC_POINTERS = 0x0au,
/// S_COALESCED - Section contains symbols that are to be coalesced.
S_COALESCED = 0x0bu,
/// S_GB_ZEROFILL - Zero fill on demand section (that can be larger than 4
/// gigabytes).
S_GB_ZEROFILL = 0x0cu,
/// S_INTERPOSING - Section with only pairs of function pointers for
/// interposing.
S_INTERPOSING = 0x0du,
/// S_16BYTE_LITERALS - Section with only 16 byte literals.
S_16BYTE_LITERALS = 0x0eu,
/// S_DTRACE_DOF - Section contains DTrace Object Format.
S_DTRACE_DOF = 0x0fu,
/// S_LAZY_DYLIB_SYMBOL_POINTERS - Section with lazy symbol pointers to
/// lazy loaded dylibs.
S_LAZY_DYLIB_SYMBOL_POINTERS = 0x10u,
/// S_THREAD_LOCAL_REGULAR - Thread local data section.
S_THREAD_LOCAL_REGULAR = 0x11u,
/// S_THREAD_LOCAL_ZEROFILL - Thread local zerofill section.
S_THREAD_LOCAL_ZEROFILL = 0x12u,
/// S_THREAD_LOCAL_VARIABLES - Section with thread local variable
/// structure data.
S_THREAD_LOCAL_VARIABLES = 0x13u,
/// S_THREAD_LOCAL_VARIABLE_POINTERS - Section with pointers to thread
/// local structures.
S_THREAD_LOCAL_VARIABLE_POINTERS = 0x14u,
/// S_THREAD_LOCAL_INIT_FUNCTION_POINTERS - Section with thread local
/// variable initialization pointers to functions.
S_THREAD_LOCAL_INIT_FUNCTION_POINTERS = 0x15u,
LAST_KNOWN_SECTION_TYPE = S_THREAD_LOCAL_INIT_FUNCTION_POINTERS
};
enum : uint32_t {
// Constant masks for the "flags[31:24]" field in llvm::MachO::section and
// llvm::MachO::section_64 (mask "flags" with SECTION_ATTRIBUTES_USR)
/// S_ATTR_PURE_INSTRUCTIONS - Section contains only true machine
/// instructions.
S_ATTR_PURE_INSTRUCTIONS = 0x80000000u,
/// S_ATTR_NO_TOC - Section contains coalesced symbols that are not to be
/// in a ranlib table of contents.
S_ATTR_NO_TOC = 0x40000000u,
/// S_ATTR_STRIP_STATIC_SYMS - Ok to strip static symbols in this section
/// in files with the MY_DYLDLINK flag.
S_ATTR_STRIP_STATIC_SYMS = 0x20000000u,
/// S_ATTR_NO_DEAD_STRIP - No dead stripping.
S_ATTR_NO_DEAD_STRIP = 0x10000000u,
/// S_ATTR_LIVE_SUPPORT - Blocks are live if they reference live blocks.
S_ATTR_LIVE_SUPPORT = 0x08000000u,
/// S_ATTR_SELF_MODIFYING_CODE - Used with i386 code stubs written on by
/// dyld.
S_ATTR_SELF_MODIFYING_CODE = 0x04000000u,
/// S_ATTR_DEBUG - A debug section.
S_ATTR_DEBUG = 0x02000000u,
// Constant masks for the "flags[23:8]" field in llvm::MachO::section and
// llvm::MachO::section_64 (mask "flags" with SECTION_ATTRIBUTES_SYS)
/// S_ATTR_SOME_INSTRUCTIONS - Section contains some machine instructions.
S_ATTR_SOME_INSTRUCTIONS = 0x00000400u,
/// S_ATTR_EXT_RELOC - Section has external relocation entries.
S_ATTR_EXT_RELOC = 0x00000200u,
/// S_ATTR_LOC_RELOC - Section has local relocation entries.
S_ATTR_LOC_RELOC = 0x00000100u,
// Constant masks for the value of an indirect symbol in an indirect
// symbol table
INDIRECT_SYMBOL_LOCAL = 0x80000000u,
INDIRECT_SYMBOL_ABS = 0x40000000u
};
enum DataRegionType {
// Constants for the "kind" field in a data_in_code_entry structure
DICE_KIND_DATA = 1u,
DICE_KIND_JUMP_TABLE8 = 2u,
DICE_KIND_JUMP_TABLE16 = 3u,
DICE_KIND_JUMP_TABLE32 = 4u,
DICE_KIND_ABS_JUMP_TABLE32 = 5u
};
enum RebaseType {
REBASE_TYPE_POINTER = 1u,
REBASE_TYPE_TEXT_ABSOLUTE32 = 2u,
REBASE_TYPE_TEXT_PCREL32 = 3u
};
enum {
REBASE_OPCODE_MASK = 0xF0u,
REBASE_IMMEDIATE_MASK = 0x0Fu
};
enum RebaseOpcode {
REBASE_OPCODE_DONE = 0x00u,
REBASE_OPCODE_SET_TYPE_IMM = 0x10u,
REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB = 0x20u,
REBASE_OPCODE_ADD_ADDR_ULEB = 0x30u,
REBASE_OPCODE_ADD_ADDR_IMM_SCALED = 0x40u,
REBASE_OPCODE_DO_REBASE_IMM_TIMES = 0x50u,
REBASE_OPCODE_DO_REBASE_ULEB_TIMES = 0x60u,
REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB = 0x70u,
REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB = 0x80u
};
enum BindType {
BIND_TYPE_POINTER = 1u,
BIND_TYPE_TEXT_ABSOLUTE32 = 2u,
BIND_TYPE_TEXT_PCREL32 = 3u
};
enum BindSpecialDylib {
BIND_SPECIAL_DYLIB_SELF = 0,
BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE = -1,
BIND_SPECIAL_DYLIB_FLAT_LOOKUP = -2
};
enum {
BIND_SYMBOL_FLAGS_WEAK_IMPORT = 0x1u,
BIND_SYMBOL_FLAGS_NON_WEAK_DEFINITION = 0x8u,
BIND_OPCODE_MASK = 0xF0u,
BIND_IMMEDIATE_MASK = 0x0Fu
};
enum BindOpcode {
BIND_OPCODE_DONE = 0x00u,
BIND_OPCODE_SET_DYLIB_ORDINAL_IMM = 0x10u,
BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB = 0x20u,
BIND_OPCODE_SET_DYLIB_SPECIAL_IMM = 0x30u,
BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM = 0x40u,
BIND_OPCODE_SET_TYPE_IMM = 0x50u,
BIND_OPCODE_SET_ADDEND_SLEB = 0x60u,
BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB = 0x70u,
BIND_OPCODE_ADD_ADDR_ULEB = 0x80u,
BIND_OPCODE_DO_BIND = 0x90u,
BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB = 0xA0u,
BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED = 0xB0u,
BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB = 0xC0u
};
enum {
EXPORT_SYMBOL_FLAGS_KIND_MASK = 0x03u,
EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION = 0x04u,
EXPORT_SYMBOL_FLAGS_REEXPORT = 0x08u,
EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER = 0x10u
};
enum ExportSymbolKind {
EXPORT_SYMBOL_FLAGS_KIND_REGULAR = 0x00u,
EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL = 0x01u
};
enum {
// Constant masks for the "n_type" field in llvm::MachO::nlist and
// llvm::MachO::nlist_64
N_STAB = 0xe0,
N_PEXT = 0x10,
N_TYPE = 0x0e,
N_EXT = 0x01
};
enum NListType {
// Constants for the "n_type & N_TYPE" llvm::MachO::nlist and
// llvm::MachO::nlist_64
N_UNDF = 0x0u,
N_ABS = 0x2u,
N_SECT = 0xeu,
N_PBUD = 0xcu,
N_INDR = 0xau
};
enum SectionOrdinal {
// Constants for the "n_sect" field in llvm::MachO::nlist and
// llvm::MachO::nlist_64
NO_SECT = 0u,
MAX_SECT = 0xffu
};
enum {
// Constant masks for the "n_desc" field in llvm::MachO::nlist and
// llvm::MachO::nlist_64
N_ARM_THUMB_DEF = 0x0008u,
N_NO_DEAD_STRIP = 0x0020u,
N_WEAK_REF = 0x0040u,
N_WEAK_DEF = 0x0080u,
N_SYMBOL_RESOLVER = 0x0100u
};
enum StabType {
// Constant values for the "n_type" field in llvm::MachO::nlist and
// llvm::MachO::nlist_64 when "(n_type & NlistMaskStab) != 0"
N_GSYM = 0x20u,
N_FNAME = 0x22u,
N_FUN = 0x24u,
N_STSYM = 0x26u,
N_LCSYM = 0x28u,
N_BNSYM = 0x2Eu,
N_OPT = 0x3Cu,
N_RSYM = 0x40u,
N_SLINE = 0x44u,
N_ENSYM = 0x4Eu,
N_SSYM = 0x60u,
N_SO = 0x64u,
N_OSO = 0x66u,
N_LSYM = 0x80u,
N_BINCL = 0x82u,
N_SOL = 0x84u,
N_PARAMS = 0x86u,
N_VERSION = 0x88u,
N_OLEVEL = 0x8Au,
N_PSYM = 0xA0u,
N_EINCL = 0xA2u,
N_ENTRY = 0xA4u,
N_LBRAC = 0xC0u,
N_EXCL = 0xC2u,
N_RBRAC = 0xE0u,
N_BCOMM = 0xE2u,
N_ECOMM = 0xE4u,
N_ECOML = 0xE8u,
N_LENG = 0xFEu
};
enum : uint32_t {
// Constant values for the r_symbolnum field in an
// llvm::MachO::relocation_info structure when r_extern is 0.
R_ABS = 0,
// Constant bits for the r_address field in an
// llvm::MachO::relocation_info structure.
R_SCATTERED = 0x80000000
};
enum RelocationInfoType {
// Constant values for the r_type field in an
// llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
// structure.
GENERIC_RELOC_VANILLA = 0,
GENERIC_RELOC_PAIR = 1,
GENERIC_RELOC_SECTDIFF = 2,
GENERIC_RELOC_PB_LA_PTR = 3,
GENERIC_RELOC_LOCAL_SECTDIFF = 4,
GENERIC_RELOC_TLV = 5,
// Constant values for the r_type field in a PowerPC architecture
// llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
// structure.
PPC_RELOC_VANILLA = GENERIC_RELOC_VANILLA,
PPC_RELOC_PAIR = GENERIC_RELOC_PAIR,
PPC_RELOC_BR14 = 2,
PPC_RELOC_BR24 = 3,
PPC_RELOC_HI16 = 4,
PPC_RELOC_LO16 = 5,
PPC_RELOC_HA16 = 6,
PPC_RELOC_LO14 = 7,
PPC_RELOC_SECTDIFF = 8,
PPC_RELOC_PB_LA_PTR = 9,
PPC_RELOC_HI16_SECTDIFF = 10,
PPC_RELOC_LO16_SECTDIFF = 11,
PPC_RELOC_HA16_SECTDIFF = 12,
PPC_RELOC_JBSR = 13,
PPC_RELOC_LO14_SECTDIFF = 14,
PPC_RELOC_LOCAL_SECTDIFF = 15,
// Constant values for the r_type field in an ARM architecture
// llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
// structure.
ARM_RELOC_VANILLA = GENERIC_RELOC_VANILLA,
ARM_RELOC_PAIR = GENERIC_RELOC_PAIR,
ARM_RELOC_SECTDIFF = GENERIC_RELOC_SECTDIFF,
ARM_RELOC_LOCAL_SECTDIFF = 3,
ARM_RELOC_PB_LA_PTR = 4,
ARM_RELOC_BR24 = 5,
ARM_THUMB_RELOC_BR22 = 6,
ARM_THUMB_32BIT_BRANCH = 7, // obsolete
ARM_RELOC_HALF = 8,
ARM_RELOC_HALF_SECTDIFF = 9,
// Constant values for the r_type field in an ARM64 architecture
// llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
// structure.
// For pointers.
ARM64_RELOC_UNSIGNED = 0,
// Must be followed by an ARM64_RELOC_UNSIGNED
ARM64_RELOC_SUBTRACTOR = 1,
// A B/BL instruction with 26-bit displacement.
ARM64_RELOC_BRANCH26 = 2,
// PC-rel distance to page of target.
ARM64_RELOC_PAGE21 = 3,
// Offset within page, scaled by r_length.
ARM64_RELOC_PAGEOFF12 = 4,
// PC-rel distance to page of GOT slot.
ARM64_RELOC_GOT_LOAD_PAGE21 = 5,
// Offset within page of GOT slot, scaled by r_length.
ARM64_RELOC_GOT_LOAD_PAGEOFF12 = 6,
// For pointers to GOT slots.
ARM64_RELOC_POINTER_TO_GOT = 7,
// PC-rel distance to page of TLVP slot.
ARM64_RELOC_TLVP_LOAD_PAGE21 = 8,
// Offset within page of TLVP slot, scaled by r_length.
ARM64_RELOC_TLVP_LOAD_PAGEOFF12 = 9,
// Must be followed by ARM64_RELOC_PAGE21 or ARM64_RELOC_PAGEOFF12.
ARM64_RELOC_ADDEND = 10,
// Constant values for the r_type field in an x86_64 architecture
// llvm::MachO::relocation_info or llvm::MachO::scattered_relocation_info
// structure
X86_64_RELOC_UNSIGNED = 0,
X86_64_RELOC_SIGNED = 1,
X86_64_RELOC_BRANCH = 2,
X86_64_RELOC_GOT_LOAD = 3,
X86_64_RELOC_GOT = 4,
X86_64_RELOC_SUBTRACTOR = 5,
X86_64_RELOC_SIGNED_1 = 6,
X86_64_RELOC_SIGNED_2 = 7,
X86_64_RELOC_SIGNED_4 = 8,
X86_64_RELOC_TLV = 9
};
// Values for segment_command.initprot.
// From <mach/vm_prot.h>
enum {
VM_PROT_READ = 0x1,
VM_PROT_WRITE = 0x2,
VM_PROT_EXECUTE = 0x4
};
// Structs from <mach-o/loader.h>
struct mach_header {
uint32_t magic;
uint32_t cputype;
uint32_t cpusubtype;
uint32_t filetype;
uint32_t ncmds;
uint32_t sizeofcmds;
uint32_t flags;
};
struct mach_header_64 {
uint32_t magic;
uint32_t cputype;
uint32_t cpusubtype;
uint32_t filetype;
uint32_t ncmds;
uint32_t sizeofcmds;
uint32_t flags;
uint32_t reserved;
};
struct load_command {
uint32_t cmd;
uint32_t cmdsize;
};
struct segment_command {
uint32_t cmd;
uint32_t cmdsize;
char segname[16];
uint32_t vmaddr;
uint32_t vmsize;
uint32_t fileoff;
uint32_t filesize;
uint32_t maxprot;
uint32_t initprot;
uint32_t nsects;
uint32_t flags;
};
struct segment_command_64 {
uint32_t cmd;
uint32_t cmdsize;
char segname[16];
uint64_t vmaddr;
uint64_t vmsize;
uint64_t fileoff;
uint64_t filesize;
uint32_t maxprot;
uint32_t initprot;
uint32_t nsects;
uint32_t flags;
};
struct section {
char sectname[16];
char segname[16];
uint32_t addr;
uint32_t size;
uint32_t offset;
uint32_t align;
uint32_t reloff;
uint32_t nreloc;
uint32_t flags;
uint32_t reserved1;
uint32_t reserved2;
};
struct section_64 {
char sectname[16];
char segname[16];
uint64_t addr;
uint64_t size;
uint32_t offset;
uint32_t align;
uint32_t reloff;
uint32_t nreloc;
uint32_t flags;
uint32_t reserved1;
uint32_t reserved2;
uint32_t reserved3;
};
struct fvmlib {
uint32_t name;
uint32_t minor_version;
uint32_t header_addr;
};
struct fvmlib_command {
uint32_t cmd;
uint32_t cmdsize;
struct fvmlib fvmlib;
};
struct dylib {
uint32_t name;
uint32_t timestamp;
uint32_t current_version;
uint32_t compatibility_version;
};
struct dylib_command {
uint32_t cmd;
uint32_t cmdsize;
struct dylib dylib;
};
struct sub_framework_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t umbrella;
};
struct sub_client_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t client;
};
struct sub_umbrella_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t sub_umbrella;
};
struct sub_library_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t sub_library;
};
struct prebound_dylib_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t name;
uint32_t nmodules;
uint32_t linked_modules;
};
struct dylinker_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t name;
};
struct thread_command {
uint32_t cmd;
uint32_t cmdsize;
};
struct routines_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t init_address;
uint32_t init_module;
uint32_t reserved1;
uint32_t reserved2;
uint32_t reserved3;
uint32_t reserved4;
uint32_t reserved5;
uint32_t reserved6;
};
struct routines_command_64 {
uint32_t cmd;
uint32_t cmdsize;
uint64_t init_address;
uint64_t init_module;
uint64_t reserved1;
uint64_t reserved2;
uint64_t reserved3;
uint64_t reserved4;
uint64_t reserved5;
uint64_t reserved6;
};
struct symtab_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t symoff;
uint32_t nsyms;
uint32_t stroff;
uint32_t strsize;
};
struct dysymtab_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t ilocalsym;
uint32_t nlocalsym;
uint32_t iextdefsym;
uint32_t nextdefsym;
uint32_t iundefsym;
uint32_t nundefsym;
uint32_t tocoff;
uint32_t ntoc;
uint32_t modtaboff;
uint32_t nmodtab;
uint32_t extrefsymoff;
uint32_t nextrefsyms;
uint32_t indirectsymoff;
uint32_t nindirectsyms;
uint32_t extreloff;
uint32_t nextrel;
uint32_t locreloff;
uint32_t nlocrel;
};
struct dylib_table_of_contents {
uint32_t symbol_index;
uint32_t module_index;
};
struct dylib_module {
uint32_t module_name;
uint32_t iextdefsym;
uint32_t nextdefsym;
uint32_t irefsym;
uint32_t nrefsym;
uint32_t ilocalsym;
uint32_t nlocalsym;
uint32_t iextrel;
uint32_t nextrel;
uint32_t iinit_iterm;
uint32_t ninit_nterm;
uint32_t objc_module_info_addr;
uint32_t objc_module_info_size;
};
struct dylib_module_64 {
uint32_t module_name;
uint32_t iextdefsym;
uint32_t nextdefsym;
uint32_t irefsym;
uint32_t nrefsym;
uint32_t ilocalsym;
uint32_t nlocalsym;
uint32_t iextrel;
uint32_t nextrel;
uint32_t iinit_iterm;
uint32_t ninit_nterm;
uint32_t objc_module_info_size;
uint64_t objc_module_info_addr;
};
struct dylib_reference {
uint32_t isym:24,
flags:8;
};
struct twolevel_hints_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t offset;
uint32_t nhints;
};
struct twolevel_hint {
uint32_t isub_image:8,
itoc:24;
};
struct prebind_cksum_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t cksum;
};
struct uuid_command {
uint32_t cmd;
uint32_t cmdsize;
uint8_t uuid[16];
};
struct rpath_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t path;
};
struct linkedit_data_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t dataoff;
uint32_t datasize;
};
struct data_in_code_entry {
uint32_t offset;
uint16_t length;
uint16_t kind;
};
struct source_version_command {
uint32_t cmd;
uint32_t cmdsize;
uint64_t version;
};
struct encryption_info_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t cryptoff;
uint32_t cryptsize;
uint32_t cryptid;
};
struct version_min_command {
uint32_t cmd; // LC_VERSION_MIN_MACOSX or
// LC_VERSION_MIN_IPHONEOS
uint32_t cmdsize; // sizeof(struct version_min_command)
uint32_t version; // X.Y.Z is encoded in nibbles xxxx.yy.zz
uint32_t reserved;
};
struct dyld_info_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t rebase_off;
uint32_t rebase_size;
uint32_t bind_off;
uint32_t bind_size;
uint32_t weak_bind_off;
uint32_t weak_bind_size;
uint32_t lazy_bind_off;
uint32_t lazy_bind_size;
uint32_t export_off;
uint32_t export_size;
};
struct linker_options_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t count;
};
struct symseg_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t offset;
uint32_t size;
};
struct ident_command {
uint32_t cmd;
uint32_t cmdsize;
};
struct fvmfile_command {
uint32_t cmd;
uint32_t cmdsize;
uint32_t name;
uint32_t header_addr;
};
struct tlv_descriptor_32 {
uint32_t thunk;
uint32_t key;
uint32_t offset;
};
struct tlv_descriptor_64 {
uint64_t thunk;
uint64_t key;
uint64_t offset;
};
struct tlv_descriptor {
uintptr_t thunk;
uintptr_t key;
uintptr_t offset;
};
struct entry_point_command {
uint32_t cmd;
uint32_t cmdsize;
uint64_t entryoff;
uint64_t stacksize;
};
// Structs from <mach-o/fat.h>
struct fat_header {
uint32_t magic;
uint32_t nfat_arch;
};
struct fat_arch {
uint32_t cputype;
uint32_t cpusubtype;
uint32_t offset;
uint32_t size;
uint32_t align;
};
// Structs from <mach-o/reloc.h>
struct relocation_info {
int32_t r_address;
uint32_t r_symbolnum:24,
r_pcrel:1,
r_length:2,
r_extern:1,
r_type:4;
};
struct scattered_relocation_info {
#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && (BYTE_ORDER == BIG_ENDIAN)
uint32_t r_scattered:1,
r_pcrel:1,
r_length:2,
r_type:4,
r_address:24;
#else
uint32_t r_address:24,
r_type:4,
r_length:2,
r_pcrel:1,
r_scattered:1;
#endif
int32_t r_value;
};
// Structs NOT from <mach-o/reloc.h>, but that make LLVM's life easier
struct any_relocation_info {
uint32_t r_word0, r_word1;
};
// Structs from <mach-o/nlist.h>
struct nlist {
uint32_t n_strx;
uint8_t n_type;
uint8_t n_sect;
int16_t n_desc;
uint32_t n_value;
};
struct nlist_64 {
uint32_t n_strx;
uint8_t n_type;
uint8_t n_sect;
uint16_t n_desc;
uint64_t n_value;
};
// Get/Set functions from <mach-o/nlist.h>
static inline uint16_t GET_LIBRARY_ORDINAL(uint16_t n_desc) {
return (((n_desc) >> 8u) & 0xffu);
}
static inline void SET_LIBRARY_ORDINAL(uint16_t &n_desc, uint8_t ordinal) {
n_desc = (((n_desc) & 0x00ff) | (((ordinal) & 0xff) << 8));
}
static inline uint8_t GET_COMM_ALIGN (uint16_t n_desc) {
return (n_desc >> 8u) & 0x0fu;
}
static inline void SET_COMM_ALIGN (uint16_t &n_desc, uint8_t align) {
n_desc = ((n_desc & 0xf0ffu) | ((align & 0x0fu) << 8u));
}
// Enums from <mach/machine.h>
enum : uint32_t {
// Capability bits used in the definition of cpu_type.
CPU_ARCH_MASK = 0xff000000, // Mask for architecture bits
CPU_ARCH_ABI64 = 0x01000000 // 64 bit ABI
};
// Constants for the cputype field.
enum CPUType {
CPU_TYPE_ANY = -1,
CPU_TYPE_X86 = 7,
CPU_TYPE_I386 = CPU_TYPE_X86,
CPU_TYPE_X86_64 = CPU_TYPE_X86 | CPU_ARCH_ABI64,
/* CPU_TYPE_MIPS = 8, */
CPU_TYPE_MC98000 = 10, // Old Motorola PowerPC
CPU_TYPE_ARM = 12,
CPU_TYPE_ARM64 = CPU_TYPE_ARM | CPU_ARCH_ABI64,
CPU_TYPE_SPARC = 14,
CPU_TYPE_POWERPC = 18,
CPU_TYPE_POWERPC64 = CPU_TYPE_POWERPC | CPU_ARCH_ABI64
};
enum : uint32_t {
// Capability bits used in the definition of cpusubtype.
CPU_SUB_TYPE_MASK = 0xff000000, // Mask for architecture bits
CPU_SUB_TYPE_LIB64 = 0x80000000, // 64 bit libraries
// Special CPU subtype constants.
CPU_SUBTYPE_MULTIPLE = ~0u
};
// Constants for the cpusubtype field.
enum CPUSubTypeX86 {
CPU_SUBTYPE_I386_ALL = 3,
CPU_SUBTYPE_386 = 3,
CPU_SUBTYPE_486 = 4,
CPU_SUBTYPE_486SX = 0x84,
CPU_SUBTYPE_586 = 5,
CPU_SUBTYPE_PENT = CPU_SUBTYPE_586,
CPU_SUBTYPE_PENTPRO = 0x16,
CPU_SUBTYPE_PENTII_M3 = 0x36,
CPU_SUBTYPE_PENTII_M5 = 0x56,
CPU_SUBTYPE_CELERON = 0x67,
CPU_SUBTYPE_CELERON_MOBILE = 0x77,
CPU_SUBTYPE_PENTIUM_3 = 0x08,
CPU_SUBTYPE_PENTIUM_3_M = 0x18,
CPU_SUBTYPE_PENTIUM_3_XEON = 0x28,
CPU_SUBTYPE_PENTIUM_M = 0x09,
CPU_SUBTYPE_PENTIUM_4 = 0x0a,
CPU_SUBTYPE_PENTIUM_4_M = 0x1a,
CPU_SUBTYPE_ITANIUM = 0x0b,
CPU_SUBTYPE_ITANIUM_2 = 0x1b,
CPU_SUBTYPE_XEON = 0x0c,
CPU_SUBTYPE_XEON_MP = 0x1c,
CPU_SUBTYPE_X86_ALL = 3,
CPU_SUBTYPE_X86_64_ALL = 3,
CPU_SUBTYPE_X86_ARCH1 = 4,
CPU_SUBTYPE_X86_64_H = 8
};
static inline int CPU_SUBTYPE_INTEL(int Family, int Model) {
return Family | (Model << 4);
}
static inline int CPU_SUBTYPE_INTEL_FAMILY(CPUSubTypeX86 ST) {
return ((int)ST) & 0x0f;
}
static inline int CPU_SUBTYPE_INTEL_MODEL(CPUSubTypeX86 ST) {
return ((int)ST) >> 4;
}
enum {
CPU_SUBTYPE_INTEL_FAMILY_MAX = 15,
CPU_SUBTYPE_INTEL_MODEL_ALL = 0
};
enum CPUSubTypeARM {
CPU_SUBTYPE_ARM_ALL = 0,
CPU_SUBTYPE_ARM_V4T = 5,
CPU_SUBTYPE_ARM_V6 = 6,
CPU_SUBTYPE_ARM_V5 = 7,
CPU_SUBTYPE_ARM_V5TEJ = 7,
CPU_SUBTYPE_ARM_XSCALE = 8,
CPU_SUBTYPE_ARM_V7 = 9,
// unused ARM_V7F = 10,
CPU_SUBTYPE_ARM_V7S = 11,
CPU_SUBTYPE_ARM_V7K = 12,
CPU_SUBTYPE_ARM_V6M = 14,
CPU_SUBTYPE_ARM_V7M = 15,
CPU_SUBTYPE_ARM_V7EM = 16
};
enum CPUSubTypeARM64 {
CPU_SUBTYPE_ARM64_ALL = 0
};
enum CPUSubTypeSPARC {
CPU_SUBTYPE_SPARC_ALL = 0
};
enum CPUSubTypePowerPC {
CPU_SUBTYPE_POWERPC_ALL = 0,
CPU_SUBTYPE_POWERPC_601 = 1,
CPU_SUBTYPE_POWERPC_602 = 2,
CPU_SUBTYPE_POWERPC_603 = 3,
CPU_SUBTYPE_POWERPC_603e = 4,
CPU_SUBTYPE_POWERPC_603ev = 5,
CPU_SUBTYPE_POWERPC_604 = 6,
CPU_SUBTYPE_POWERPC_604e = 7,
CPU_SUBTYPE_POWERPC_620 = 8,
CPU_SUBTYPE_POWERPC_750 = 9,
CPU_SUBTYPE_POWERPC_7400 = 10,
CPU_SUBTYPE_POWERPC_7450 = 11,
CPU_SUBTYPE_POWERPC_970 = 100,
CPU_SUBTYPE_MC980000_ALL = CPU_SUBTYPE_POWERPC_ALL,
CPU_SUBTYPE_MC98601 = CPU_SUBTYPE_POWERPC_601
};
} // end namespace MachO
} // end namespace llvm
#endif
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