aptest.asm

来自「Cracker终结者——提供最优秀的软件保护技术」· 汇编 代码 · 共 79 行

;;
;; aPLib compression library  -  the smaller the better :)
;;
;; DOS32 example
;;
;; Copyright (c) 1998-2002 by Joergen Ibsen / Jibz
;; All Rights Reserved
;;

.386p
.model flat

locals
jumps

.stack 256

.data?

 dest    db 128      dup (?)
 check   db 128      dup (?)
 workmem db 640*1024 dup (?)

.data

 src    db 'This is just a simple little test, to see if aPLib works!!!$'
 srclen dd ($-src)

 pcktxt db 'Packing...', 0dh, 0ah, '$'

.code

 extrn _aP_pack            : near
 extrn _aP_depack_asm      : near
 extrn _aP_depack_asm_fast : near

aplib_asm_test:
        ; compress src -> dest
        push  offset callback     ; no callback, hence NULL
        push  offset workmem      ; 1mb of workmem
        push  [srclen]            ; length
        push  offset dest         ; destination
        push  offset src          ; source
        call  _aP_pack            ; compress
        add   esp, 5*4            ; adjust stack (function is cdecl)

        ; decompress dest -> check
        push  offset check        ; destination
        push  offset dest         ; source
        call  _aP_depack_asm_fast ; decompress
        add   esp, 2*4            ; adjust stack (function is cdecl)

        ; print out check to verify
        mov   edx, offset check   ; print result
        mov   ah, 09h
        int   21h

        ; exit to dos
c_done:
        mov   ax, 4C00h
        int   21h

callback:
        push  ebp
        mov   ebp, esp
        pushad

        ; print out 'Packing...' just to show it works
        mov   edx, offset pcktxt
        mov   ah, 09h
        int   21h

        popad
        pop   ebp
        mov   eax, 1              ; continue packing
        ret

END aplib_asm_test