#------------------------------------------------------------------------------ # $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