#------------------------------------------------------------------------------ # $File: xenix,v 1.14 2021/04/26 15:56:00 christos Exp $ # xenix: file(1) magic for Microsoft Xenix # # "Middle model" stuff, and "Xenix 8086 relocatable or 80286 small # model" lifted from "magic.xenix", with comment "derived empirically; # treat as folklore until proven" # # "small model", "large model", "huge model" stuff lifted from XXX # # XXX - "x.out" collides with PDP-11 archives # 0 string core core file (Xenix) # URL: http://www.polarhome.com/service/man/?qf=86rel&tf=2&of=Xenix # http://fileformats.archiveteam.org/wiki/OMF # Reference: http://www.azillionmonkeys.com/qed/Omfg.pdf # Update: Joerg Jenderek # recordtype~TranslatorHEADerRecord 0 byte 0x80 # GRR: line above is too general as it catches also Extensible storage engine DataBase, # all lif files like forth.lif hpcc88.lif lex90b.lif ( See ./lif) # and all compressed DEGAS low-res bitmaps like: MUNCHIE.PC1 PIDER1.PC1 # skip examples like GENA.SND Switch.Snd by looking for record length maximal 1024-3 >1 uleshort <1022 # skip examples like GAME.PICTURE Strange.Pic by looking for positive record length >>1 uleshort >0 # skip examples like Xtable.Data FRACTAL.GEN SHR.VIEW by looking for positive string length >>>3 ubyte >0 # skip examples like OMBRE.6 with "UUUUUU" name by looking for valid high second record type >>>>(1.s+3) ubyte >0x6D 8086 relocatable (Microsoft) #!:mime application/octet-stream !:mime application/x-object !:ext obj/o/a # T-module name often source name like "hello.c" or "jmppm32.asm" in JMPPM32.OBJ or # "kbhit" in KBHITS.OBJ or "CAUSEWAY_KERNAL" in CWAPI.OBJ >>>>>3 pstring x \b, "%s" # data length probably lower 256 according to TrID obj_omf.trid.xml >>>>>1 uleshort x \b, 1st record data length %u # checksum #>>>>>(3.b+4) ubyte x \b, checksum %#2.2x # second recordtype: 96h~LNAMES 88h~COMENT 8CH~EXTDEF >>>>>(1.s+3) ubyte x \b, 2nd record type %#x >>>>>(1.s+4) uleshort x \b, 2nd record data length %u 0 leshort 0xff65 x.out >2 string __.SYMDEF randomized >0 byte x archive 0 leshort 0x206 Microsoft a.out >8 leshort 1 Middle model >0x1e leshort &0x10 overlay >0x1e leshort &0x2 separate >0x1e leshort &0x4 pure >0x1e leshort &0x800 segmented >0x1e leshort &0x400 standalone >0x1e leshort &0x8 fixed-stack >0x1c byte &0x80 byte-swapped >0x1c byte &0x40 word-swapped >0x10 lelong >0 not-stripped >0x1e leshort ^0xc000 pre-SysV >0x1e leshort &0x4000 V2.3 >0x1e leshort &0x8000 V3.0 >0x1c byte &0x4 86 >0x1c byte &0xb 186 >0x1c byte &0x9 286 >0x1c byte &0xa 386 >0x1f byte <0x040 small model >0x1f byte =0x048 large model >0x1f byte =0x049 huge model >0x1e leshort &0x1 executable >0x1e leshort ^0x1 object file >0x1e leshort &0x40 Large Text >0x1e leshort &0x20 Large Data >0x1e leshort &0x120 Huge Objects Enabled >0x10 lelong >0 not stripped 0 leshort 0x140 old Microsoft 8086 x.out >0x3 byte &0x4 separate >0x3 byte &0x2 pure >0 byte &0x1 executable >0 byte ^0x1 relocatable >0x14 lelong >0 not stripped 0 lelong 0x206 b.out >0x1e leshort &0x10 overlay >0x1e leshort &0x2 separate >0x1e leshort &0x4 pure >0x1e leshort &0x800 segmented >0x1e leshort &0x400 standalone >0x1e leshort &0x1 executable >0x1e leshort ^0x1 object file >0x1e leshort &0x4000 V2.3 >0x1e leshort &0x8000 V3.0 >0x1c byte &0x4 86 >0x1c byte &0xb 186 >0x1c byte &0x9 286 >0x1c byte &0x29 286 >0x1c byte &0xa 386 >0x1e leshort &0x4 Large Text >0x1e leshort &0x2 Large Data >0x1e leshort &0x102 Huge Objects Enabled 0 leshort 0x580 XENIX 8086 relocatable or 80286 small model |