diff options
Diffstat (limited to 'magic/Magdir/coff')
| -rw-r--r-- | magic/Magdir/coff | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/magic/Magdir/coff b/magic/Magdir/coff new file mode 100644 index 0000000..5123b72 --- /dev/null +++ b/magic/Magdir/coff @@ -0,0 +1,98 @@ + +#------------------------------------------------------------------------------ +# $File: coff,v 1.7 2022/11/21 22:30:22 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, Feb 2021 +# 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 +# skip DOCTOR.DAILY READER.NDA REDBOX.ROOT by looking for positive number of sections +>>2 uleshort >0 +# skip ega80woa.fnt svgafix.fnt HP3FNTS1.DAT HP3FNTS2.DAT INTRO.ACT LEARN.PIF by looking for low number of sections +>>>2 uleshort <4207 +>>>>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 +# MS Windows COFF Intel Itanium, AMD64 +# https://msdn.microsoft.com/en-us/library/windows/desktop/ms680313(v=vs.85).aspx +>>>>0 uleshort 0x0200 Intel ia64 +>>>>0 uleshort 0x8664 Intel amd64 +# ARM COFF (./arm) +>>>>0 uleshort 0xaa64 Aarch64 +>>>>0 uleshort 0x01c0 ARM +>>>>0 uleshort 0xa641 ARM64EC +>>>>0 uleshort 0x01c2 ARM Thumb +>>>>0 uleshort 0x01c4 ARMv7 Thumb +# TODO for other COFFs +#>>>>0 uleshort 0xABCD COFF_TEMPLATE +>>>>0 default x +>>>>>0 uleshort x type %#04x +>>>>0 uleshort x COFF +# F_EXEC flag bit +>>>>18 leshort ^0x0002 object file +!:mime application/x-coff +!:ext o/obj/lib +# no cof sample found +#!: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 like: 1 2 3 4 5 7 8 9 11 12 15 16 19 20 21 22 26 30 36 40 42 56 80 89 96 124 +>>>>2 uleshort <2 \b, %u section +>>>>2 uleshort >1 \b, %u sections +# f_symptr - symbol table pointer, only for not stripped +# like: 0 0x7c 0xf4 0x104 0x182 0x1c2 0x1c6 0x468 0x948 0x416e 0x149a6 0x1c9d8 0x23a68 0x35120 0x7afa0 +>>>>8 ulelong >0 \b, symbol offset=%#x +# f_nsyms - number of symbols, only for not stripped +# like: 0 2 7 9 10 11 20 35 41 63 71 80 105 146 153 158 170 208 294 572 831 1546 +>>>>12 ulelong >0 \b, %d symbols +# f_opthdr - optional header size. An object file should have a value of 0 +>>>>16 uleshort >0 \b, optional header size %u +# f_timdat - file time & date stamp only for little endian +>>>>4 ledate >0 \b, created %s +# 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 +>>>>16 uleshort =0 +# first section name s_name[8] like: .text .data .debug$S .drectve .testseg +>>>>>20 string x \b, 1st section name "%.8s" +# >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 + |