Package ghidra.app.util.bin.format.macho

Class MachHeaderFlags

java.lang.Object
ghidra.app.util.bin.format.macho.MachHeaderFlags
public final class MachHeaderFlags extends Object
Constants for the flags field of the mach_header
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    MH_ALLMODSBOUND
    indicates that this binary binds to all two-level namespace modules of its dependent libraries.
    static final int
    MH_ALLOW_STACK_EXECUTION
    When this bit is set, all stacks in the task will be given stack execution privilege.
    static final int
    MH_APP_EXTENSION_SAFE
    The code was linked for use in an application extension.
    static final int
    MH_BINDATLOAD
    the object file's undefined references are bound by the dynamic linker when loaded
    static final int
    MH_BINDS_TO_WEAK
    the final linked image uses weak symbols.
    static final int
    MH_CANONICAL
    the binary has been canonicalized via the unprebind operation.
    static final int
    MH_DEAD_STRIPPABLE_DYLIB
    Only for use on dylibs.
    static final int
    MH_DYLDLINK
    the object file is input for the dynamic linker and can't be staticly link edited again
    static final int
    MH_DYLIB_IN_CACHE
    Only for use on dylibs.
    static final int
    MH_FORCE_FLAT
    the executable is forcing all images to use flat name space bindings
    static final int
    MH_HAS_TLV_DESCRIPTORS
    Contains a section of type S_THREAD_LOCAL_VARIABLES.
    static final int
    MH_INCRLINK
    the object file is the output of an incremental link against a base file and can't be link edited again.
    static final int
    MH_LAZY_INIT
    the shared library init routine is to be run lazily via catching memory faults to its writeable segments (obsolete)
    static final int
    MH_NLIST_OUTOFSYNC_WITH_DYLDINFO
    The external symbols listed in the nlist symbol table do not include all the symbols listed in the dyld info.
    static final int
    MH_NO_HEAP_EXECUTION
    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.
    static final int
    MH_NO_REEXPORTED_DYLIBS
    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
    static final int
    MH_NOFIXPREBINDING
    do not have dyld notify the prebinding agent about this executable
    static final int
    MH_NOMULTIDEFS
    this umbrella guarantees no multiple definitions of symbols in its sub-images so the two-level namespace hints can always be used
    static final int
    MH_NOUNDEFS
    the object file has no undefined references
    static final int
    MH_PIE
    When this bit is set, the OS will load the main executable at a random address.
    static final int
    MH_PREBINDABLE
    the binary is not prebound but can have its prebinding redone.
    static final int
    MH_PREBOUND
    the file has its dynamic undefined references prebound
    static final int
    MH_ROOT_SAFE
    When this bit is set, the binary declares it is safe for use in processes with uid zero
    static final int
    MH_SETUID_SAFE
    When this bit is set, the binary declares it is safe for use in processes when issetugid() is true
    static final int
    MH_SIM_SUPPORT
    Allow LC_MIN_VERSION_MACOS and LC_BUILD_VERSION load commands with the platforms macOS, iOSMac, iOSSimulator, tvOSSimulator and watchOSSimulator.
    static final int
    MH_SPLIT_SEGS
    the file has its read-only and read-write segments split
    static final int
    MH_SUBSECTIONS_VIA_SYMBOLS
    safe to divide up the sections into sub-sections via symbols for dead code stripping
    static final int
    MH_TWOLEVEL
    the image is using two-level name space bindings
    static final int
    MH_WEAK_DEFINES
    the final linked image contains external weak symbols.

  • Constructor Summary

    Constructors
    Constructor
    Description
    MachHeaderFlags()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static final List<String>
    getFlags(int flags)
    Returns string representation of the flag values.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • MH_NOUNDEFS

      public static final int MH_NOUNDEFS
      the object file has no undefined references
      See Also:

    • MH_BINDATLOAD

      public static final int MH_BINDATLOAD
      the object file's undefined references are bound by the dynamic linker when loaded
      See Also:

    • MH_PREBOUND

      public static final int MH_PREBOUND
      the file has its dynamic undefined references prebound
      See Also:

    • MH_SPLIT_SEGS

      public static final int MH_SPLIT_SEGS
      the file has its read-only and read-write segments split
      See Also:

    • MH_LAZY_INIT

      public static final int MH_LAZY_INIT
      the shared library init routine is to be run lazily via catching memory faults to its writeable segments (obsolete)
      See Also:

    • MH_TWOLEVEL

      public static final int MH_TWOLEVEL
      the image is using two-level name space bindings
      See Also:

    • MH_FORCE_FLAT

      public static final int MH_FORCE_FLAT
      the executable is forcing all images to use flat name space bindings
      See Also:

    • MH_NOMULTIDEFS

      public static final int MH_NOMULTIDEFS
      this umbrella guarantees no multiple definitions of symbols in its sub-images so the two-level namespace hints can always be used
      See Also:

    • MH_NOFIXPREBINDING

      public static final int MH_NOFIXPREBINDING
      do not have dyld notify the prebinding agent about this executable
      See Also:

    • MH_PREBINDABLE

      public static final int MH_PREBINDABLE
      the binary is not prebound but can have its prebinding redone. only used when MH_PREBOUND is not set
      See Also:

    • MH_ALLMODSBOUND

      public static final int MH_ALLMODSBOUND
      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.
      See Also:

    • MH_SUBSECTIONS_VIA_SYMBOLS

      public static final int MH_SUBSECTIONS_VIA_SYMBOLS
      safe to divide up the sections into sub-sections via symbols for dead code stripping
      See Also:

    • MH_CANONICAL

      public static final int MH_CANONICAL
      the binary has been canonicalized via the unprebind operation.
      See Also:

    • MH_WEAK_DEFINES

      public static final int MH_WEAK_DEFINES
      the final linked image contains external weak symbols.
      See Also:

    • MH_BINDS_TO_WEAK

      public static final int MH_BINDS_TO_WEAK
      the final linked image uses weak symbols.
      See Also:

    • MH_ALLOW_STACK_EXECUTION

      public static final int MH_ALLOW_STACK_EXECUTION
      When this bit is set, all stacks in the task will be given stack execution privilege. only used in MH_EXECUTE filetypes.
      See Also:

    • MH_ROOT_SAFE

      public static final int MH_ROOT_SAFE
      When this bit is set, the binary declares it is safe for use in processes with uid zero
      See Also:

    • MH_SETUID_SAFE

      public static final int MH_SETUID_SAFE
      When this bit is set, the binary declares it is safe for use in processes when issetugid() is true
      See Also:

    • MH_NO_REEXPORTED_DYLIBS

      public static final int MH_NO_REEXPORTED_DYLIBS
      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
      See Also:

    • MH_PIE

      public static final int MH_PIE
      When this bit is set, the OS will load the main executable at a random address. Only used in MH_EXECUTE filetypes.
      See Also:

    • MH_DEAD_STRIPPABLE_DYLIB

      public static final int MH_DEAD_STRIPPABLE_DYLIB
      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.
      See Also:

    • MH_HAS_TLV_DESCRIPTORS

      public static final int MH_HAS_TLV_DESCRIPTORS
      Contains a section of type S_THREAD_LOCAL_VARIABLES.
      See Also:

    • MH_NO_HEAP_EXECUTION

      public static final int MH_NO_HEAP_EXECUTION
      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 file types.
      See Also:

    • MH_APP_EXTENSION_SAFE

      public static final int MH_APP_EXTENSION_SAFE
      The code was linked for use in an application extension.
      See Also:

    • MH_NLIST_OUTOFSYNC_WITH_DYLDINFO

      public static final int MH_NLIST_OUTOFSYNC_WITH_DYLDINFO
      The external symbols listed in the nlist symbol table do not include all the symbols listed in the dyld info.
      See Also:

    • MH_SIM_SUPPORT

      public static final int MH_SIM_SUPPORT
      Allow LC_MIN_VERSION_MACOS and LC_BUILD_VERSION load commands with the platforms macOS, iOSMac, iOSSimulator, tvOSSimulator and watchOSSimulator.
      See Also:

    • MH_DYLIB_IN_CACHE

      public static final int MH_DYLIB_IN_CACHE
      Only for use on dylibs. When this bit is set, the dylib is part of the dyld shared cache, rather than loose in the filesystem.
      See Also:

  • Constructor Details

    • MachHeaderFlags

      public MachHeaderFlags()

  • Method Details

    • getFlags

      public static final List<String> getFlags(int flags)
      Returns string representation of the flag values.
      Parameters:
      flags - the flags value to get the string representation of.
      Returns:
      a string representation of the flag values.