Format

Mach-O

Download XML Download JSON

Summary

Name: Mach-O
Version: 64bit
Identifiers: PUID: fmt/693
Description: Mach-O is a standard used to store programs and libraries on disk in the Apple Mac app binary interface. Mach-O files generally lack a format extension.
Submitted by: Digital Preservation Department / The National Archives
Developed by: Apple Computer, Inc.
Supported by: Apple Computer, Inc.

Internal signatures

Mach-O 64 bit 1

Description: BOF: þíúÏ (0xFEEDFACF)
Provenance: http://llvm.org/docs/doxygen/html/Support_2MachO_8h_source.html https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/MachORuntime/index.html

Byte sequences

Min Frag Length: Absolute from BOF
Offset: 0
Max offset: 0
Byte Sequence: FEEDFACF
Endianness: None

Mach-O 64 bit 2

Description: BOF: Ïúíþ (0xCFFAEDFE)
Provenance: http://llvm.org/docs/doxygen/html/Support_2MachO_8h_source.html https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/MachORuntime/index.html

Byte sequences

Min Frag Length: Absolute from BOF
Offset: 0
Max offset: 0
Byte Sequence: CFFAEDFE
Endianness: None

Changelog

V81

Release date

18 February 2015
- Added format
  
  Mach-O 64bit: Full entry added.
- Added signature
  
  Mach-O 64bit: New signature. Inspired by research conducted by Ange Albertini.