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- #------------------------------------------------------------------------------
- # $File: coff,v 1.2 2017/03/17 21:35:28 christos Exp $
- # coff: file(1) magic for Common Object Files not specific to known cpu types or manufactures
- #
- # COFF
- #
- # by Joerg Jenderek at Oct 2015
- # https://en.wikipedia.org/wiki/COFF
- # https://de.wikipedia.org/wiki/Common_Object_File_Format
- # http://www.delorie.com/djgpp/doc/coff/filhdr.html
- # display name+variables+flags of Common Object Files Format (32bit)
- # Maybe used also in adi,att3b,clipper,hitachi-sh,hp,ibm6000,intel,
- # mips,motorola,msdos,osf1,sharc,varied.out,vax
- 0 name display-coff
- # test for unused flag bits (0x8000,0x0800,0x0400,0x0200,x0080) in f_flags
- >18 uleshort&0x8E80 0
- >>0 clear x
- # f_magic - magic number
- # DJGPP, 80386 COFF executable, MS Windows COFF Intel 80386 object file (./intel)
- >>0 uleshort 0x014C Intel 80386
- # Hitachi SH big-endian COFF (./hitachi-sh)
- >>0 uleshort 0x0500 Hitachi SH big-endian
- # Hitachi SH little-endian COFF (./hitachi-sh)
- >>0 uleshort 0x0550 Hitachi SH little-endian
- # executable (RISC System/6000 V3.1) or obj module (./ibm6000)
- #>>0 uleshort 0x01DF
- # TODO for other COFFs
- #>>0 uleshort 0xABCD COFF_TEMPLATE
- >>0 default x
- >>>0 uleshort x type 0x%04x
- >>0 uleshort x COFF
- # F_EXEC flag bit
- >>18 leshort ^0x0002 object file
- #!:mime application/x-coff
- #!:ext cof/o/obj/lib
- >>18 leshort &0x0002 executable
- #!:mime application/x-coffexec
- # F_RELFLG flag bit,static object
- >>18 leshort &0x0001 \b, no relocation info
- # F_LNNO flag bit
- >>18 leshort &0x0004 \b, no line number info
- # F_LSYMS flag bit
- >>18 leshort &0x0008 \b, stripped
- >>18 leshort ^0x0008 \b, not stripped
- # flags in other COFF versions
- #0x0010 F_FDPR_PROF
- #0x0020 F_FDPR_OPTI
- #0x0040 F_DSA
- # F_AR32WR flag bit
- #>>>18 leshort &0x0100 \b, 32 bit little endian
- #0x1000 F_DYNLOAD
- #0x2000 F_SHROBJ
- #0x4000 F_LOADONLY
- # f_nscns - number of sections
- >>2 uleshort <2 \b, %d section
- >>2 uleshort >1 \b, %d sections
- # f_timdat - file time & date stamp only for little endian
- #>>4 date x \b, %s
- # f_symptr - symbol table pointer, only for not stripped
- >>8 ulelong >0 \b, symbol offset=0x%x
- # f_nsyms - number of symbols, only for not stripped
- >>12 ulelong >0 \b, %d symbols
- # f_opthdr - optional header size
- >>16 uleshort >0 \b, optional header size %d
- # at offset 20 can be optional header, extra bytes FILHSZ-20 because
- # do not rely on sizeof(FILHDR) to give the correct size for header.
- # or first section header
- # additional variables for other COFF files
- # >20 beshort 0407 (impure)
- # >20 beshort 0410 (pure)
- # >20 beshort 0413 (demand paged)
- # >20 beshort 0421 (standalone)
- # >22 leshort >0 - version %d
- # >168 string .lowmem Apple toolbox
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