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kolibrios/programs/other/kerpack/trunk/kerpack.asm
Marat Zakiyanov (Mario79) 843504d669 Kerpack - disassembled, rewrited and corrected for FASM 
git-svn-id: svn://kolibrios.org@1712 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-12-01 20:02:47 +00:00

417 lines
9.8 KiB
NASM
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; Kolibri kernel packer
; (C) copyright diamond 2006, 2007
;
; Disassemled and corrected in 2010 specially for FASM
; by Marat Zakiyanov aka Mario79, aka Mario
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
; Uses LZMA compression library by Igor Pavlov
; (for more information on LZMA and 7-Zip visit http://www.7-zip.org)
; (plain-C packer is ported by diamond)
;---------------------------------------------------------------------
use32
org 0
db 'MENUET01'
dd 1
dd START
dd IM_END
dd I_END
dd stacktop
dd 0 ;params
dd 0 ;cur_dir_path
;---------------------------------------------------------------------
include '../../../macros.inc'
; do not touch "purge mov"!!!
purge mov ; for the correct patch of loader
; do not touch "purge mov"!!!
;*********************************************************************
die_with_err:
pop esi
@@:
lodsb
test al,al
jz @f
mov cl,al
mcall 63,1
jmp @b
;*********************************************************************
@@:
mcall 63,,13
mcall ,,10
mcall -1
;*********************************************************************
START:
mcall 70,fn70_read
cmp eax,6
jz read_ok
;--------------------------------------
read_err:
call die_with_err
db 'KerPack: cannot load kernel.mnt',0
;*********************************************************************
read_ok:
push 18
call lzma_set_dict_size
; find jump to 32-bit code
mov edi,infile - 1
;--------------------------------------
@@:
inc edi
cmp dword [edi],0xE88EE08E ; mov fs,ax/mov gs,ax
jnz @b
cmp dword [edi+4],0x00BCD08E ; mov ss,ax/mov esp,00xxxxxx
jnz @b
add edi,11
mov [inptr],edi
sub edi, infile
mov [indelta],edi
lea eax,[ebx+0x10000]
mov dword [loader_patch3+2],eax
sub ebx,edi
mov [insize],ebx
call preprocess_calltrick2
mov al,[cti]
mov [loader_patch5-1],al
mov eax,[ctn]
mov [loader_patch4+1],eax
mov eax,[inptr]
add eax, outfile - infile + loader_size - 5
push workmem
push [insize]
push eax
push [inptr]
call lzma_compress
add eax, loader_size-5
mov [loader_patch1+6],eax
add eax,[indelta]
mov [outsize],eax
mov eax,[indelta]
mov ecx,dword [eax + outfile + loader_size - 4]
bswap ecx
mov [loader_patch2+4],ecx
add eax, 0x10000
mov [loader_patch1+1],eax
mov esi,infile
mov edi,outfile
mov ecx,[indelta]
rep movsb
mov esi,loader_start
mov ecx,loader_size
rep movsb
mcall 70,fn70_write
test eax,eax
jz @f
call die_with_err
db 'KerPack: cannot save kernel.mnt',0
;*********************************************************************
@@:
call die_with_err
db 'KerPack: all is OK',0
;*********************************************************************
preprocess_calltrick2:
; input preprocessing
mov edi,ct1
xor eax,eax
push edi
mov ecx,256/4
rep stosd
pop edi
mov ecx,ebx
mov esi,[inptr]
mov ebx,inbuftmp
xchg eax,edx
;--------------------------------------
input_pre2:
lodsb
;--------------------------------------
@@:
cmp al,0Fh
jnz ip1
dec ecx
jz input_pre_done2
lodsb
cmp al,80h
jb @b
cmp al,90h
jb @f
;--------------------------------------
ip1:
sub al,0E8h
cmp al,1
ja input_pre_cont2
;--------------------------------------
@@:
cmp ecx,5
jb input_pre_done2
lodsd
add eax,esi
sub eax,[inptr]
cmp eax,[insize]
jae xxx2
cmp eax,1000000h
jae xxx2
sub ecx,4
xchg al,ah
rol eax,16
xchg al,ah
mov [esi-4],eax
inc edx
mov [ebx],esi
add ebx,4
jmp input_pre_cont2
;*********************************************************************
xxx2:
sub esi,4
movzx eax,byte [esi]
mov byte [eax+edi],1
;--------------------------------------
input_pre_cont2:
loop input_pre2
;--------------------------------------
input_pre_done2:
mov [ctn],edx
xor eax,eax
mov ecx,256
repnz scasb
jnz pack_calltrick_done
not cl
mov [cti],cl
;--------------------------------------
@@:
cmp ebx,inbuftmp
jz pack_calltrick_done
sub ebx,4
mov eax,[ebx]
mov [eax-4],cl
jmp @b
;*********************************************************************
pack_calltrick_done:
ret
;*********************************************************************
;lzma_compress:
include 'lzma_compress.inc'
;---------------------------------------------------------------------
;lzma_set_dict_size:
include 'lzma_set_dict_size.inc'
;---------------------------------------------------------------------
;
include 'loader_lzma.inc'
;*********************************************************************
fn70_read:
dd 0
dd 0
dd 0
dd 200*1024
dd infile
filename db '/rd/1/kernel.mnt',0
fn70_write:
dd 2
dd 0
dd 0
outsize dd ?
dd outfile
db 0
dd filename
;---------------------------------------------------------------------
align 4
LiteralNextStates:
db 0,0,0,0,1,2,3,4,5,6,4,5
MatchNextStates:
db 7,7,7,7,7,7,7,10,10,10,10,10
RepNextStates:
db 8,8,8,8,8,8,8,11,11,11,11,11
ShortRepNextStates:
db 9,9,9,9,9,9,9,11,11,11,11,11
;---------------------------------------------------------------------
;*********************************************************************
IM_END:
;*********************************************************************
;params:
; rb 256
;---------------------------------------------------------------------
;cur_dir_path:
; rb 4096
;---------------------------------------------------------------------
align 4
rb 4096
stacktop:
;---------------------------------------------------------------------
align 4
inptr dd ?
indelta dd ?
insize dd ?
ct1 rb 256
ctn dd ?
cti db ?
infile rb 200*1024
inbuftmp rb 200*1024
outfile rb 200*1024
workmem rb 6A8000h
;---------------------------------------------------------------------
; Compress data area start
;---------------------------------------------------------------------
align 4
_lenEncoder:
rd 8451
;-----------------------------------------------------
_prices:
rd 4384
rd 17
;-----------------------------------------------------
_finished: rb 1
_writeEndMark: rb 1
_longestMatchWasFound: rb 1
_previousByte: rb 1
_longestMatchLength: rd 1
;-----------------------------------------------------
g_FastPos:
rb 1024
;-----------------------------------------------------
_posSlotPrices:
rd 256
;-----------------------------------------------------
_isRep0Long:
rd 192
;-----------------------------------------------------
distances:
rd 274
;-----------------------------------------------------
_optimumCurrentIndex: rd 1
_additionalOffset: rd 1
;-----------------------------------------------------
_isRepG1:
rd 12
;-----------------------------------------------------
_isMatch:
rd 192
;-----------------------------------------------------
_alignPriceCount: rd 1
_numLiteralContextBits: rd 1
;-----------------------------------------------------
_literalEncoder:
rd 114
;-----------------------------------------------------
nowPos64:
rd 2
;-----------------------------------------------------
_distancesPrices:
rd 512
;-----------------------------------------------------
_repDistances:
rd 4
;-----------------------------------------------------
_posSlotEncoder:
rd 1028
;-----------------------------------------------------
lastPosSlotFillingPos:
rd 2
;-----------------------------------------------------
_numFastBytes: rd 1
_posStateMask: rd 1
;-----------------------------------------------------
_isRepG0:
rd 12
;-----------------------------------------------------
_repMatchLenEncoder:
rd 8451
rd 4384
rd 17
;-----------------------------------------------------
_isRepG2:
rd 12
;-----------------------------------------------------
_dictionarySize: rd 1
_numLiteralPosStateBits: rd 1
_distTableSize: rd 1
_optimumEndIndex: rd 1
;-----------------------------------------------------
;static CState state
state.State: rb 1
state.Prev1IsChar: rb 1
state.Prev2: rb 2
state.PosPrev2: rd 1
state.BackPrev2: rd 1
state.Price: rd 1
state.PosPrev: rd 1
state.BackPrev: rd 1
state.Backs:
rd 4
;----------------------------------------------------
rd 40950
;-----------------------------------------------------
_alignPrices:
rd 16
;-----------------------------------------------------
_isRep:
rd 12
;-----------------------------------------------------
_posAlignEncoder:
rd 256
;-----------------------------------------------------
i_01: rd 1
;-----------------------------------------------------
_state: rb 1
_cache: rb 1
_state.Prev2: rb 2
_posEncoders: rd 1
_numPrevBits: rd 1
_numPosBits: rd 1
_posMask: rd 1
_posStateBits: rd 1
_range: rd 1
_cacheSize: rd 1
_cyclicBufferSize: rd 1
;-----------------------------------------------------
low:
rd 2
;-----------------------------------------------------
Models:
rd 512
;-----------------------------------------------------
_matchMaxLen: rd 1
pack_pos: rd 1
_cutValue: rd 1
_hash: rd 1
;-----------------------------------------------------
crc_table:
rd 256
;-----------------------------------------------------
_buffer: rd 1
_pos: rd 1
_streamPos: rd 1
pack_length: rd 1
;---------------------------------------------------------------------
; Compress data area end
;---------------------------------------------------------------------
I_END:
;---------------------------------------------------------------------
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