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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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