NewCustomSectionReader returns a CustomSectionReader that reads from r starting at offset off and stops with EOF after n bytes.

NewWriteAtBuffer creates a WriteAtBuffer with an internal buffer provided by buf.

****** HELPERS ******* */.

* The N_ALT_ENTRY bit of the n_desc field indicates that the * symbol is pinned to the previous content.

PLATFORM_ANY.

pre-armv8 */.

API */.

arm flavors .

ARM_THREAD_STATE_LAST 8 /* legacy */.

symbol is a Thumb function (ARM) */.

The following are used to encode binding information */.

section with only 16 byte literals */.

section with only 4 byte literals */.

section with only 8 byte literals */.

section contains symbols that are to be coalesced */.

compatibility */.

* When selecting a slice, ANY will pick the slice with the best * grading for the selected cpu_type_t, unlike the "ALL" subtypes, * which are the slices that can run on any hardware for that cpu type.

ARM64_32 subtypes.

ARM64_32 subtypes.

ARM64 subtypes.

ARM64 subtypes.

CPU subtype capability flags for ptrauth on arm64e platforms, take 2 */.

CPU subtype capability flags for ptrauth on arm64e platforms */.

ARM64 subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

ARM subtypes.

mask for feature flags */.

compat.

HPPA subtypes for Hewlett-Packard HP-PA family of risc processors.

HPPA subtypes for Hewlett-Packard HP-PA family of risc processors.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I386 subtypes.

I860 subtypes.

I860 subtypes.

64 bit libraries */.

mask for cpu subtype */.

680x0 subtypes.

680x0 subtypes.

680x0 subtypes.

680x0 subtypes.

MC88000 subtypes.

MC88000 subtypes.

MC88000 subtypes.

MC98000 (PowerPC) subtypes.

MC98000 (PowerPC) subtypes.

Mips subtypes.

Mips subtypes.

pmax.

Mips subtypes.

Mips subtypes.

Mips subtypes.

Mips subtypes.

3max.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

PowerPC subtypes.

SPARC subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

VAX subtypes.

X86 subtypes.

X86 subtypes.

X86 subtypes.

X86 subtypes.

section with only literal C strings*/.

a debug section */.

symbol is discarded */.

section contains DTrace Object Format */.

* The following are used on the flags byte of a terminal node * in the export information.

section has external relocation entries */.

this segment is the VM that is allocated by a fixed VM library, for overlap checking in the link editor */.

zero fill on demand section (that can be larger than 4 gigabytes) */.

the file contents for this segment is for the high part of the VM space, the low part is zero filled (for stacks in core files) */.

TODO: use this ?.

32-bit offsets to initializers */.

section with only pairs of function pointers for interposing */.

section with only lazy symbol pointers to lazy loaded dylibs */.

section with only lazy symbol pointers */.

used with linkedit_data_command */.

build for platform min OS version.

local of code signature.

table of non-instructions in __text.

used with linkedit_data_command.

string for dyld to treat like environment variable.

used with linkedit_data_command, payload is trie.

compressed dyld information.

compressed dyld information only.

Code signing DRs copied from linked dylibs.

dynamic link-edit symbol table info.

encrypted segment information.

64-bit encrypted segment information.

used with fileset_entry_command */.

compressed table of function start addresses.

used with linkedit_data_command */.

used with linkedit_data_command */.

fixed VM file inclusion (internal use).

id dylib command.

id dylinker command (not load dylinker command).

object identification info (obsolete).

fixed VM shared library identification.

delay load of dylib until first use.

optimization hints in MH_OBJECT files.

linker options in MH_OBJECT files.

load dylib command.

load a dynamic linker.

load upward dylib.

* load a dynamically linked shared library that is allowed to be missing * (all symbols are weak imported).

load a specified fixed VM shared library.

replacement for LC_UNIXTHREAD.

arbitrary data included within a Mach-O file.

prebind checksum.

modules prebound for a dynamically linked shared library.

prepage command (internal use).

load and re-export dylib.

image routines.

64-bit image routines.

runpath additions.

segment of this file to be mapped.

64-bit segment of this file to be mapped.

local of info to split segments.

* sep load commands */.

source version used to build binary.

sub client.

sub framework.

sub library.

sub umbrella.

link-edit gdb symbol table info (obsolete).

link-edit stab symbol table info.

target triple used to compile */.

thread.

two-level namespace lookup hints.

thread+stack.

the uuid.

build for iPhoneOS min OS version.

build for MacOSX min OS version.

build for AppleTV min OS version.

build for Watch min OS version.

section with only pointers to literals */.

blocks are live if they reference live blocks */.

section has local relocation entries */.

1 thru 255 inclusive */.

values for gpu tools (1024 to 1048) */.

dynamically bound bundle file */.

core file */.

companion file with only debug sections */.

dynamically bound shared library */.

shared library stub for static linking only, no section contents */.

dynamic link editor */.

demand paged executable file */.

a file composed of other Mach-Os to be run in the same userspace sharing a single linkedit.

fixed VM shared library file */.

gpu support functions */.

gpu program */.

x86_64 kexts */.

relocatable object file */.

preloaded executable file */.

section with only function pointers for initialization*/.

section with only function pointers for termination */.

absolute, n_sect == NO_SECT */.

AST file path: name,,NO_SECT,0,0 */.

begin common: name,,NO_SECT,0,0 */.

include file beginning: name,,NO_SECT,0,sum */.

begin nsect sym: 0,,n_sect,0,address */.

* The N_COLD_FUNC bit of the n_desc field indicates that the symbol is used * infrequently and the linker should order it towards the end of the section.

end common (local name): 0,,n_sect,0,address */.

end common: name,,n_sect,0,0 */.

include file end: name,,NO_SECT,0,0 */.

end nsect sym: 0,,n_sect,0,address */.

alternate entry: name,,n_sect,linenumber,address */.

deleted include file: name,,NO_SECT,0,sum */.

external symbol bit, set for external symbols */.

procedure name (f77 kludge): name,,NO_SECT,0,0 */.

procedure: name,,n_sect,linenumber,address */.

global symbol: name,,NO_SECT,type,0 */.

indirect */.

left bracket: 0,,NO_SECT,nesting level,address */.

.lcomm symbol: name,,n_sect,type,address */.

second stab entry with length information */.

dynamic library file name: name,,NO_SECT,0,0 */.

local sym: name,,NO_SECT,type,offset */.

compiler -O level: name,,NO_SECT,0,0 */.

emitted with gcc2_compiled and in gcc source */.

object file name: name,,(see below),1,st_mtime */.

compiler parameters: name,,NO_SECT,0,0 */.

prebound undefined (defined in a dylib) */.

global pascal symbol: name,,NO_SECT,subtype,line */.

private external symbol bit */.

parameter: name,,NO_SECT,type,offset */.

right bracket: 0,,NO_SECT,nesting level,address */.

register sym: name,,NO_SECT,type,register */.

defined in section number n_sect */.

src line: 0,,n_sect,linenumber,address */.

source file name: name,,n_sect,0,address */.

#included file name: name,,n_sect,0,address */.

structure elt: name,,NO_SECT,type,struct_offset */.

if any of these bits set, a symbolic debugging entry */.

static symbol: name,,n_sect,type,address */.

mask for the type bits */.

undefined, n_sect == NO_SECT */.

compiler version: name,,NO_SECT,0,0 */.

symbol is not to be dead stripped */.

symbol is not in any section */.

section contains coalesced symbols that are not to be in a ranlib table of contents */.

no dead stripping */.

section with only non-lazy symbol pointers */.

this segment has nothing that was relocated in it and nothing relocated to it, that is it maybe safely replaced without relocation*/.

PLATFORM_BRIDGEOS.

PLATFORM_DRIVERKIT.

PLATFORM_FIRMWARE.

PLATFORM_IOS.

PLATFORM_IOS_EXCLAVECORE.

PLATFORM_IOS_EXCLAVEKIT.

PLATFORM_IOSSIMULATOR.

PLATFORM_MACCATALYST.

PLATFORM_MACOS.

PLATFORM_MACOS_EXCLAVECORE.

PLATFORM_MACOS_EXCLAVEKIT.

PLATFORM_SEPOS.

PLATFORM_TVOS.

PLATFORM_TVOS_EXCLAVECORE.

PLATFORM_TVOS_EXCLAVEKIT.

PLATFORM_TVOSSIMULATOR.

PLATFORM_UNKNOWN.

PLATFORM_VISIONOS.

PLATFORM_WATCHOS_EXCLAVEKIT.

PLATFORM_WATCHOS_EXCLAVEKIT.

PLATFORM_VISIONOSSIMULATOR.

PLATFORM_WATCHOS.

PLATFORM_WATCHOS_EXCLAVECORE.

PLATFORM_WATCHOS_EXCLAVEKIT.

PLATFORM_WATCHOSSIMULATOR.

This segment is protected.

section contains only true machine instructions */.

This segment is made read-only after fixups */.

The following are used to encode rebasing information */.

reference to a weak symbol */.

types of references */.

* To simplify stripping of objects that use are used with the dynamic link * editor, the static link editor marks the symbols defined an object that are * referenced by a dynamicly bound object (dynamic shared libraries, bundles).

regular section */.

system setable attributes */.

User setable attributes */.

24 section attributes */.

256 section types */.

Used with i386 code stubs written on by dyld */.

section contains some machine instructions */.

ok to strip static symbols in this section in files with the MH_DYLDLINK flag */.

* The N_SYMBOL_RESOLVER bit of the n_desc field indicates that the * that the function is actually a resolver function and should * be called to get the address of the real function to use.

section with only symbol stubs, byte size of stub in the reserved2 field */.

functions to call to initialize TLV values */.

template of initial values for TLVs */.

pointers to TLV descriptors */.

TLV descriptors */.

template of initial values for TLVs */.

coalesed symbol is a weak definition */.

symbol is weak referenced */.

14 and 15 are used for the internal X86_SAVED_STATE flavours */ Arrange for flavors to take sequential values, 32-bit, 64-bit, non-specific */.

x86 flavors .

zero fill on demand section */.

* BuildVersionCmd contains the min OS version on which this * binary was built to run for its platform.

CustomSectionReader implements Read, Seek, and ReadAt on a section of an underlying ReaderAt.

* DyldInfoCmd contains the file offsets and sizes of * the new compressed form of the information dyld needs to * load the image.

* DylibCmd a dynamically linked shared library (filetype == MH_DYLIB in the mach header) * contains a dylib_command (cmd == LC_ID_DYLIB) to identify the library.

a module table entry */.

a 64-bit module table entry */.

a table of contents entry */.

* DylibUseCmd is an alternate encoding for: LC_LOAD_DYLIB.

* DylinkerCmd a program that uses a dynamic linker contains a dylinker_command to identify * the name of the dynamic linker (LC_LOAD_DYLINKER).

* DysymtabCmd is the second set of the symbolic information which is used to support * the data structures for the dynamically link editor.

* EncryptionInfo64Cmd contains the file offset and size of an * of an encrypted segment (for use in x86_64 targets).

* EncryptionInfoCmd contains the file offset and size of an * of an encrypted segment.

* EntryPointCmd is a replacement for thread_command.

A FileHeader represents a Mach-O file header.

FilesetEntryCmd commands describe constituent Mach-O files that are part of a fileset.

* FvmFileCmdcontains a reference to a file to be loaded at the * specified virtual address.

* IdentCmd contains a free format string table following the * ident_command structure.

* LinkEditDataCmd contains the offsets and sizes of a blob * of data in the __LINKEDIT segment.

* LinkerOptionCmd contains linker options embedded in object files.

* LoadFvmLibCmd a fixed virtual shared library (filetype == MH_FVMLIB in the mach header) * contains a fvmlib_command (cmd == LC_IDFVMLIB) to identify the library.

An Nlist is a Mach-O generic symbol table entry.

An Nlist32 is a Mach-O 32-bit symbol table entry.

An Nlist64 is a Mach-O 64-bit symbol table entry.

Note commands DataOwner = "addrable bits" */.

* NoteCmd describe a region of arbitrary data included in a Mach-O * file.

* PrebindCksumCmd contains the value of the original check sum for * prebound files or zero.

* PreboundDylibCmd a program (filetype == MH_EXECUTE) that is * prebound to its dynamic libraries has one of these for each library that * the static linker used in prebinding.

A PrePageCmd is a fixed VM file inclusion (internal use).

A Reloc represents a Mach-O relocation.

A Routines64Cmd is a Mach-O 64-bit version of RoutinesCmd.

* RoutinesCmd contains the address of the dynamic shared library * initialization routine and an index into the module table for the module * that defines the routine.

* RpathCmd contains a path which at runtime should be added to * the current run path used to find @rpath prefixed dylibs.

A Section32 is a 32-bit Mach-O section header.

A Section64 is a 64-bit Mach-O section header.

* Segment32 is a 32-bit segment load command indicates that a part of this file is to be * mapped into the task's address space.

* Segment64 is a 64-bit segment load command indicates that a part of this file is to be * mapped into a 64-bit task's address space.

* SourceVersionCmd is an optional load command containing * the version of the sources used to build the binary.

* SubClientCmd for dynamically linked shared libraries that are subframework of an umbrella * framework they can allow clients other than the umbrella framework or other * subframeworks in the same umbrella framework.

* SubFrameworkCmd a dynamically linked shared library may be a subframework of an umbrella * framework.

* SubLibraryCmd a dynamically linked shared library may be a sub_library of another shared * library.

* SubUmbrellaCmd a dynamically linked shared library may be a sub_umbrella of an umbrella * framework.

* SymsegCmd contains the offset and size of the GNU style * symbol table information as described in the header file <symseg.h>.

* SymtabCmd contains the offsets and sizes of the link-edit 4.3BSD * "stab" style symbol table information as described in the header files * <nlist.h> and <stab.h>.

* TargetTripleCmd contains a string which specifies the * target triple (e.g.

* ThreadCmd contain machine-specific data structures suitable for * use in the thread state primitives.

* Sections of type S_THREAD_LOCAL_VARIABLES contain an array * of tlv_descriptor structures.

* TwolevelHintsCmd contains the offset and number of hints in the * two-level namespace lookup hints table.

* UUIDCmd contains a single 128-bit unique random number that * identifies an object produced by the static link editor.

* VersionMinCmd contains the min OS version on which this * binary was built to run.

A WriteAtBuffer provides a in memory buffer supporting the io.WriterAt interface Can be used with the s3manager.Downloader to download content to a buffer in memory.

MachoReader is a custom io.SectionReader interface with virtual address support.

A CodeSignatureCmd is a Mach-O code signature command.

A CPU is a Mach-O cpu type.

A DataInCodeCmd is a Mach-O data in code command.

A DyldChainedFixupsCmd is used with linkedit_data_command command.

A DyldEnvironmentCmd is a Mach-O string for dyld to treat like environment variable command.

A DyldExportsTrieCmd is used with linkedit_data_command, payload is trie command.

A DyldInfoOnlyCmd is a Mach-O compressed dyld information only command.

A DylibCodeSignDrsCmd is a Mach-O code signing DRs copied from linked dylibs command.

* The entries in the reference symbol table are used when loading the module * (both by the static and dynamic link editors) and if the module is unloaded * or replaced.

A FunctionStartsCmd is a Mach-O compressed table of function start addresses command.

A FunctionVariantFixupsCmd is used with linkedit_data_command command.

A FunctionVariantsCmd is used with linkedit_data_command command.

A HeaderFileType is the Mach-O file type, e.g.

A IDDylibCmd represents a Mach-O load dynamic library ident command.

A IDDylinkerCmd is a Mach-O dynamic linker identification command.

A IDFvmLibCmd is a Mach-O fixed VM shared library identification command.

A LazyLoadDylibCmd is a Mach-O delay load of dylib until first use command.

A LinkerOptimizationHintCmd is a Mach-O optimization hints command.

A LoadCmd is a Mach-O load command.

A LoadDylibCmd load a dynamically linked shared library.

A LoadUpwardDylibCmd is a Mach-O load upward dylibcommand.

A LoadWeakDylibCmd is a Mach-O load a dynamically linked shared library that is allowed to be missing (all symbols are weak imported) command.

Platform is a macho platform object.

A ReExportDylibCmd is a Mach-O load and re-export dylib command.

A SegmentSplitInfoCmd is a Mach-O code info to split segments command.

* TwolevelHint provide hints to the dynamic link editor where to start * looking for an undefined symbol in a two-level namespace image.

A UnixThreadCmd is a Mach-O unix thread command.

UUID is a macho uuid object.

A VersionMinIPhoneOSCmd is a Mach-O build for iPhoneOS min OS version command.

A VersionMinMacOSCmd is a Mach-O build for macOS min OS version command.

A VersionMinTvOSCmd is a Mach-O build for tvOS min OS version command.

A VersionMinWatchOSCmd is a Mach-O build for watchOS min OS version command.