2 #------------------------------------------------------------------------------
3 # $File: coff,v 1.3 2018/08/01 10:34:03 christos Exp $
4 # coff: file(1) magic for Common Object Files not specific to known cpu types or manufactures
8 # by Joerg Jenderek at Oct 2015
9 # https://en.wikipedia.org/wiki/COFF
10 # https://de.wikipedia.org/wiki/Common_Object_File_Format
11 # http://www.delorie.com/djgpp/doc/coff/filhdr.html
13 # display name+variables+flags of Common Object Files Format (32bit)
14 # Maybe used also in adi,att3b,clipper,hitachi-sh,hp,ibm6000,intel,
15 # mips,motorola,msdos,osf1,sharc,varied.out,vax
17 # test for unused flag bits (0x8000,0x0800,0x0400,0x0200,x0080) in f_flags
20 # f_magic - magic number
21 # DJGPP, 80386 COFF executable, MS Windows COFF Intel 80386 object file (./intel)
22 >>0 uleshort 0x014C Intel 80386
23 # Hitachi SH big-endian COFF (./hitachi-sh)
24 >>0 uleshort 0x0500 Hitachi SH big-endian
25 # Hitachi SH little-endian COFF (./hitachi-sh)
26 >>0 uleshort 0x0550 Hitachi SH little-endian
27 # executable (RISC System/6000 V3.1) or obj module (./ibm6000)
29 # MS Windows COFF Intel Itanium, AMD64
30 # https://msdn.microsoft.com/en-us/library/windows/desktop/ms680313(v=vs.85).aspx
31 >>0 uleshort 0x0200 Intel ia64
32 >>0 uleshort 0x8664 Intel amd64
33 # TODO for other COFFs
34 #>>0 uleshort 0xABCD COFF_TEMPLATE
36 >>>0 uleshort x type 0x%04x
39 >>18 leshort ^0x0002 object file
40 #!:mime application/x-coff
42 >>18 leshort &0x0002 executable
43 #!:mime application/x-coffexec
44 # F_RELFLG flag bit,static object
45 >>18 leshort &0x0001 \b, no relocation info
47 >>18 leshort &0x0004 \b, no line number info
49 >>18 leshort &0x0008 \b, stripped
50 >>18 leshort ^0x0008 \b, not stripped
51 # flags in other COFF versions
56 #>>>18 leshort &0x0100 \b, 32 bit little endian
60 # f_nscns - number of sections
61 >>2 uleshort <2 \b, %d section
62 >>2 uleshort >1 \b, %d sections
63 # f_timdat - file time & date stamp only for little endian
65 # f_symptr - symbol table pointer, only for not stripped
66 >>8 ulelong >0 \b, symbol offset=0x%x
67 # f_nsyms - number of symbols, only for not stripped
68 >>12 ulelong >0 \b, %d symbols
69 # f_opthdr - optional header size
70 >>16 uleshort >0 \b, optional header size %d
71 # at offset 20 can be optional header, extra bytes FILHSZ-20 because
72 # do not rely on sizeof(FILHDR) to give the correct size for header.
73 # or first section header
74 # additional variables for other COFF files
75 # >20 beshort 0407 (impure)
76 # >20 beshort 0410 (pure)
77 # >20 beshort 0413 (demand paged)
78 # >20 beshort 0421 (standalone)
79 # >22 leshort >0 - version %d
80 # >168 string .lowmem Apple toolbox