Module goblin::mach::header [−][src]
Expand description
A header contains minimal architecture information, the binary kind, the number of load commands, as well as an endianness hint
Structs
Constants
indicates that this binary binds to all two-level namespace modules of its dependent libraries. Only used when MH_PREBINDABLE and MH_TWOLEVEL are both set.
When this bit is set, all stacks in the task will be given stack execution privilege. Only used in MH_EXECUTE filetypes.
The code was linked for use in an application extension.
the object file’s undefined references are bound by the dynamic linker when loaded.
the final linked image uses weak symbols
dynamically bound bundle file
the binary has been canonicalized via the unprebind operation
core file
Only for use on dylibs. When linking against a dylib that has this bit set, the static linker will automatically not create a LC_LOAD_DYLIB load command to the dylib if no symbols are being referenced from the dylib.
companion file with only debug sections
the object file is input for the dynamic linker and can’t be staticly link edited again
dynamically bound shared library
shared library stub for static linking only, no section contents
dynamic link editor
demand paged executable file
the executable is forcing all images to use flat name space bindings
fixed VM shared library file
Contains a section of type S_THREAD_LOCAL_VARIABLES
the object file is the output of an incremental link against a base file and can’t be link edited again
x86_64 kexts
the shared library init routine is to be run lazily via catching memory faults to its writeable segments (obsolete)
Mach Header magic constant
Mach Header magic constant for 64-bit
do not have dyld notify the prebinding agent about this executable
this umbrella guarantees no multiple defintions of symbols in its sub-images so the two-level namespace hints can always be used.
the object file has no undefined references
When this bit is set, the OS will run the main executable with a non-executable heap even on platforms (e.g. i386) that don’t require it. Only used in MH_EXECUTE filetypes.
When this bit is set on a dylib, the static linker does not need to examine dependent dylibs to see if any are re-exported
relocatable object file
When this bit is set, the OS will load the main executable at a random address. Only used in MH_EXECUTE filetypes.
the binary is not prebound but can have its prebinding redone. only used when MH_PREBOUND is not set.
the file has its dynamic undefined references prebound.
preloaded executable file
When this bit is set, the binary declares it is safe for use in processes with uid zero
When this bit is set, the binary declares it is safe for use in processes when issetugid() is true
the file has its read-only and read-write segments split
safe to divide up the sections into sub-sections via symbols for dead code stripping
the image is using two-level name space bindings
the final linked image contains external weak symbols