Kerpack - disassembled, rewrited and corrected for FASM
git-svn-id: svn://kolibrios.org@1712 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Marat Zakiyanov (Mario79)
parent
8020de982d
commit
843504d669
7
programs/other/kerpack/trunk/build.bat
Normal file
7
programs/other/kerpack/trunk/build.bat
Normal file
@ -0,0 +1,7 @@
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@fasm -m 16384 kerpack.asm kerpack
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@kpack kerpack
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@pause
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13
programs/other/kerpack/trunk/build.sh
Executable file
13
programs/other/kerpack/trunk/build.sh
Executable file
@ -0,0 +1,13 @@
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#!/bin/bash
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# This script does for linux the same as build.bat for DOS,
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# it compiles the KoOS kernel, hopefully ;-)
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echo "lang fix en"
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echo "lang fix en" > lang.inc
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fasm -m 16384 kerpack.asm kerpack
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rm -f lang.inc
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exit 0
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32
programs/other/kerpack/trunk/calltrick2.inc
Normal file
32
programs/other/kerpack/trunk/calltrick2.inc
Normal file
@ -0,0 +1,32 @@
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pop esi
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push esi
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loader_patch4:
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mov ecx, 0 ; will be patched: number of calltrick entries
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ctrloop:
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lodsb
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@@:
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cmp al, 0xF
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jnz .f
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lodsb
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cmp al, 80h
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jb @b
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cmp al, 90h
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jb @f
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.f:
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sub al, 0E8h
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cmp al, 1
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ja ctrloop
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@@:
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cmp byte [esi], 0 ; will be patched: code in calltrick entries
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loader_patch5:
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jnz ctrloop
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lodsd
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; "bswap eax" is not supported on i386
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; mov al,0/bswap eax = 4 bytes, following instructions = 9 bytes
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shr ax, 8
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ror eax, 16
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xchg al, ah
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sub eax, esi
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add eax, [esp]
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mov [esi-4], eax
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loop ctrloop
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417
programs/other/kerpack/trunk/kerpack.asm
Normal file
417
programs/other/kerpack/trunk/kerpack.asm
Normal file
@ -0,0 +1,417 @@
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; Kolibri kernel packer
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; (C) copyright diamond 2006, 2007
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;
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; Disassemled and corrected in 2010 specially for FASM
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; by Marat Zakiyanov aka Mario79, aka Mario
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;
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; This program is free software; you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation; either version 2 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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; Uses LZMA compression library by Igor Pavlov
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; (for more information on LZMA and 7-Zip visit http://www.7-zip.org)
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; (plain-C packer is ported by diamond)
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;---------------------------------------------------------------------
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use32
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org 0
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db 'MENUET01'
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dd 1
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dd START
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dd IM_END
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dd I_END
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dd stacktop
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dd 0 ;params
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dd 0 ;cur_dir_path
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;---------------------------------------------------------------------
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include '../../../macros.inc'
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; do not touch "purge mov"!!!
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purge mov ; for the correct patch of loader
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; do not touch "purge mov"!!!
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;*********************************************************************
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die_with_err:
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pop esi
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@@:
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lodsb
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test al,al
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jz @f
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mov cl,al
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mcall 63,1
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jmp @b
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;*********************************************************************
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@@:
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mcall 63,,13
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mcall ,,10
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mcall -1
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;*********************************************************************
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START:
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mcall 70,fn70_read
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cmp eax,6
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jz read_ok
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;--------------------------------------
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read_err:
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call die_with_err
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db 'KerPack: cannot load kernel.mnt',0
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;*********************************************************************
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read_ok:
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push 18
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call lzma_set_dict_size
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; find jump to 32-bit code
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mov edi,infile - 1
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;--------------------------------------
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@@:
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inc edi
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cmp dword [edi],0xE88EE08E ; mov fs,ax/mov gs,ax
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jnz @b
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cmp dword [edi+4],0x00BCD08E ; mov ss,ax/mov esp,00xxxxxx
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jnz @b
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add edi,11
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mov [inptr],edi
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sub edi, infile
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mov [indelta],edi
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lea eax,[ebx+0x10000]
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mov dword [loader_patch3+2],eax
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sub ebx,edi
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mov [insize],ebx
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call preprocess_calltrick2
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mov al,[cti]
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mov [loader_patch5-1],al
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mov eax,[ctn]
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mov [loader_patch4+1],eax
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mov eax,[inptr]
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add eax, outfile - infile + loader_size - 5
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push workmem
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push [insize]
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push eax
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push [inptr]
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call lzma_compress
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add eax, loader_size-5
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mov [loader_patch1+6],eax
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add eax,[indelta]
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mov [outsize],eax
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mov eax,[indelta]
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mov ecx,dword [eax + outfile + loader_size - 4]
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bswap ecx
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mov [loader_patch2+4],ecx
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add eax, 0x10000
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mov [loader_patch1+1],eax
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mov esi,infile
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mov edi,outfile
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mov ecx,[indelta]
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rep movsb
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mov esi,loader_start
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mov ecx,loader_size
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rep movsb
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mcall 70,fn70_write
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test eax,eax
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jz @f
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call die_with_err
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db 'KerPack: cannot save kernel.mnt',0
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;*********************************************************************
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@@:
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call die_with_err
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db 'KerPack: all is OK',0
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;*********************************************************************
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preprocess_calltrick2:
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; input preprocessing
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mov edi,ct1
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xor eax,eax
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push edi
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mov ecx,256/4
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rep stosd
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pop edi
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mov ecx,ebx
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mov esi,[inptr]
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mov ebx,inbuftmp
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xchg eax,edx
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;--------------------------------------
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input_pre2:
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lodsb
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;--------------------------------------
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@@:
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cmp al,0Fh
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jnz ip1
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dec ecx
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jz input_pre_done2
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lodsb
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cmp al,80h
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jb @b
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cmp al,90h
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jb @f
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;--------------------------------------
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ip1:
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sub al,0E8h
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cmp al,1
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ja input_pre_cont2
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;--------------------------------------
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@@:
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cmp ecx,5
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jb input_pre_done2
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lodsd
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add eax,esi
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sub eax,[inptr]
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cmp eax,[insize]
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jae xxx2
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cmp eax,1000000h
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jae xxx2
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sub ecx,4
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xchg al,ah
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rol eax,16
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xchg al,ah
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mov [esi-4],eax
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inc edx
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mov [ebx],esi
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add ebx,4
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jmp input_pre_cont2
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;*********************************************************************
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xxx2:
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sub esi,4
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movzx eax,byte [esi]
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mov byte [eax+edi],1
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;--------------------------------------
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input_pre_cont2:
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loop input_pre2
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;--------------------------------------
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input_pre_done2:
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mov [ctn],edx
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xor eax,eax
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mov ecx,256
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repnz scasb
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jnz pack_calltrick_done
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not cl
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mov [cti],cl
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;--------------------------------------
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@@:
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cmp ebx,inbuftmp
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jz pack_calltrick_done
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sub ebx,4
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mov eax,[ebx]
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mov [eax-4],cl
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jmp @b
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;*********************************************************************
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pack_calltrick_done:
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ret
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;*********************************************************************
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;lzma_compress:
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include 'lzma_compress.inc'
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;---------------------------------------------------------------------
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;lzma_set_dict_size:
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include 'lzma_set_dict_size.inc'
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;---------------------------------------------------------------------
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;
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include 'loader_lzma.inc'
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;*********************************************************************
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fn70_read:
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dd 0
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dd 0
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dd 0
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dd 200*1024
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dd infile
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filename db '/rd/1/kernel.mnt',0
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fn70_write:
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dd 2
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dd 0
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dd 0
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outsize dd ?
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dd outfile
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db 0
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dd filename
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;---------------------------------------------------------------------
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align 4
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LiteralNextStates:
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db 0,0,0,0,1,2,3,4,5,6,4,5
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MatchNextStates:
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db 7,7,7,7,7,7,7,10,10,10,10,10
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RepNextStates:
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db 8,8,8,8,8,8,8,11,11,11,11,11
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ShortRepNextStates:
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db 9,9,9,9,9,9,9,11,11,11,11,11
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;---------------------------------------------------------------------
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;*********************************************************************
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IM_END:
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;*********************************************************************
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;params:
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; rb 256
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;---------------------------------------------------------------------
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;cur_dir_path:
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; rb 4096
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;---------------------------------------------------------------------
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align 4
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rb 4096
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stacktop:
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;---------------------------------------------------------------------
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align 4
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inptr dd ?
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indelta dd ?
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insize dd ?
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ct1 rb 256
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ctn dd ?
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cti db ?
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infile rb 200*1024
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inbuftmp rb 200*1024
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outfile rb 200*1024
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workmem rb 6A8000h
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;---------------------------------------------------------------------
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; Compress data area start
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;---------------------------------------------------------------------
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align 4
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_lenEncoder:
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rd 8451
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;-----------------------------------------------------
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_prices:
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rd 4384
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rd 17
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;-----------------------------------------------------
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_finished: rb 1
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_writeEndMark: rb 1
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_longestMatchWasFound: rb 1
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_previousByte: rb 1
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_longestMatchLength: rd 1
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;-----------------------------------------------------
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g_FastPos:
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rb 1024
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;-----------------------------------------------------
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_posSlotPrices:
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rd 256
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;-----------------------------------------------------
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_isRep0Long:
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rd 192
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;-----------------------------------------------------
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distances:
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rd 274
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;-----------------------------------------------------
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_optimumCurrentIndex: rd 1
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_additionalOffset: rd 1
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;-----------------------------------------------------
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_isRepG1:
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rd 12
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;-----------------------------------------------------
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_isMatch:
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rd 192
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;-----------------------------------------------------
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_alignPriceCount: rd 1
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_numLiteralContextBits: rd 1
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;-----------------------------------------------------
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_literalEncoder:
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rd 114
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;-----------------------------------------------------
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nowPos64:
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rd 2
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;-----------------------------------------------------
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_distancesPrices:
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rd 512
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;-----------------------------------------------------
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_repDistances:
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rd 4
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;-----------------------------------------------------
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_posSlotEncoder:
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rd 1028
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;-----------------------------------------------------
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lastPosSlotFillingPos:
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rd 2
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;-----------------------------------------------------
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_numFastBytes: rd 1
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_posStateMask: rd 1
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;-----------------------------------------------------
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_isRepG0:
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rd 12
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;-----------------------------------------------------
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_repMatchLenEncoder:
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rd 8451
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rd 4384
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rd 17
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;-----------------------------------------------------
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_isRepG2:
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rd 12
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;-----------------------------------------------------
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_dictionarySize: rd 1
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_numLiteralPosStateBits: rd 1
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_distTableSize: rd 1
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_optimumEndIndex: rd 1
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;-----------------------------------------------------
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;static CState state
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state.State: rb 1
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state.Prev1IsChar: rb 1
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state.Prev2: rb 2
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state.PosPrev2: rd 1
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state.BackPrev2: rd 1
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state.Price: rd 1
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state.PosPrev: rd 1
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state.BackPrev: rd 1
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state.Backs:
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rd 4
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;----------------------------------------------------
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rd 40950
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;-----------------------------------------------------
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_alignPrices:
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rd 16
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;-----------------------------------------------------
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_isRep:
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rd 12
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;-----------------------------------------------------
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_posAlignEncoder:
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rd 256
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;-----------------------------------------------------
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i_01: rd 1
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;-----------------------------------------------------
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_state: rb 1
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_cache: rb 1
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_state.Prev2: rb 2
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_posEncoders: rd 1
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_numPrevBits: rd 1
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_numPosBits: rd 1
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_posMask: rd 1
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_posStateBits: rd 1
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_range: rd 1
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_cacheSize: rd 1
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_cyclicBufferSize: rd 1
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;-----------------------------------------------------
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low:
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rd 2
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;-----------------------------------------------------
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Models:
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rd 512
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;-----------------------------------------------------
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_matchMaxLen: rd 1
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pack_pos: rd 1
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_cutValue: rd 1
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_hash: rd 1
|
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;-----------------------------------------------------
|
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crc_table:
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rd 256
|
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;-----------------------------------------------------
|
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_buffer: rd 1
|
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_pos: rd 1
|
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_streamPos: rd 1
|
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pack_length: rd 1
|
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;---------------------------------------------------------------------
|
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; Compress data area end
|
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;---------------------------------------------------------------------
|
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I_END:
|
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;---------------------------------------------------------------------
|
||||
459
programs/other/kerpack/trunk/loader_lzma.inc
Normal file
459
programs/other/kerpack/trunk/loader_lzma.inc
Normal file
@ -0,0 +1,459 @@
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loader_start:
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; start address; this code will be injected after the init code
|
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; (some commands below "B32" in the kernel)
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mov edi, 0x280000
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lea ebx, [edi+loader_size1+16]
|
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lea edx, [ebx+4]
|
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loader_patch1:
|
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mov esi, 0 ; will be patched: start address to copy
|
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mov ecx, 0 ; will be patched: size of data to copy
|
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push esi
|
||||
rep movsb
|
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jmp edx
|
||||
loader_size1 = $ - loader_start
|
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|
||||
loader_patch2:
|
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dd 0x280000 + loader_size
|
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dd 0 ; will be patched: start value for code
|
||||
; (LZMA-specific)
|
||||
dd -1
|
||||
dd _RangeDecoderBitDecode_edx - loader_start + 0x280000
|
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dd _RangeDecoderBitDecode - loader_start + 0x280000
|
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RangeDecoderBitDecode equ dword [ebx]
|
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RangeDecoderBitDecode_edx equ dword [ebx-4]
|
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code_ equ ebx-12
|
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range equ ebx-8
|
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|
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rep1 equ ebx-28
|
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rep2 equ ebx-24
|
||||
rep3 equ ebx-20
|
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inptr_ldr equ ebx-16
|
||||
|
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pb equ 2 ; pos state bits
|
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lp equ 0 ; literal pos state bits
|
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lc equ 3 ; literal context bits
|
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posStateMask equ ((1 shl pb)-1)
|
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literalPosMask equ ((1 shl lp)-1)
|
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|
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kNumPosBitsMax = 4
|
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kNumPosStatesMax = (1 shl kNumPosBitsMax)
|
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|
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kLenNumLowBits = 3
|
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kLenNumLowSymbols = (1 shl kLenNumLowBits)
|
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kLenNumMidBits = 3
|
||||
kLenNumMidSymbols = (1 shl kLenNumMidBits)
|
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kLenNumHighBits = 8
|
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kLenNumHighSymbols = (1 shl kLenNumHighBits)
|
||||
|
||||
LenChoice = 0
|
||||
LenChoice2 = 1
|
||||
LenLow = 2
|
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LenMid = (LenLow + (kNumPosStatesMax shl kLenNumLowBits))
|
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LenHigh = (LenMid + (kNumPosStatesMax shl kLenNumMidBits))
|
||||
kNumLenProbs = (LenHigh + kLenNumHighSymbols)
|
||||
|
||||
kNumStates = 12
|
||||
kNumLitStates = 7
|
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kStartPosModelIndex = 4
|
||||
kEndPosModelIndex = 14
|
||||
kNumFullDistances = (1 shl (kEndPosModelIndex/2))
|
||||
kNumPosSlotBits = 6
|
||||
kNumLenToPosStates = 4
|
||||
kNumAlignBits = 4
|
||||
kAlignTableSize = (1 shl kNumAlignBits)
|
||||
kMatchMinLen = 2
|
||||
|
||||
IsMatch = 0
|
||||
IsRep = 0xC0 ; (IsMatch + (kNumStates shl kNumPosBitsMax))
|
||||
IsRepG0 = 0xCC ; (IsRep + kNumStates)
|
||||
IsRepG1 = 0xD8 ; (IsRepG0 + kNumStates)
|
||||
IsRepG2 = 0xE4 ; (IsRepG1 + kNumStates)
|
||||
IsRep0Long = 0xF0 ; (IsRepG2 + kNumStates)
|
||||
PosSlot = 0x1B0 ; (IsRep0Long + (kNumStates shl kNumPosBitsMax))
|
||||
SpecPos = 0x2B0 ; (PosSlot + (kNumLenToPosStates shl kNumPosSlotBits))
|
||||
Align_ = 0x322 ; (SpecPos + kNumFullDistances - kEndPosModelIndex)
|
||||
Lencoder = 0x332 ; (Align_ + kAlignTableSize)
|
||||
RepLencoder = 0x534 ; (Lencoder + kNumLenProbs)
|
||||
Literal = 0x736 ; (RepLencoder + kNumLenProbs)
|
||||
|
||||
LZMA_BASE_SIZE = 1846 ; must be ==Literal
|
||||
LZMA_LIT_SIZE = 768
|
||||
|
||||
kNumTopBits = 24
|
||||
kTopValue = (1 shl kNumTopBits)
|
||||
|
||||
kNumBitModelTotalBits = 11
|
||||
kBitModelTotal = (1 shl kNumBitModelTotalBits)
|
||||
kNumMoveBits = 5
|
||||
|
||||
uninit_base = 2C0000h
|
||||
|
||||
p = uninit_base
|
||||
|
||||
unpacker:
|
||||
xor ebp, ebp
|
||||
xor eax, eax
|
||||
dec eax
|
||||
lea edi, [rep1]
|
||||
stosd
|
||||
stosd
|
||||
stosd
|
||||
|
||||
xchg eax, esi
|
||||
; mov ecx, Literal + (LZMA_LIT_SIZE shl (lc+lp))
|
||||
mov ch, (Literal + (LZMA_LIT_SIZE shl (lc+lp)) + 0xFF) shr 8
|
||||
mov eax, kBitModelTotal/2
|
||||
mov edi, p
|
||||
rep stosd
|
||||
|
||||
pop edi
|
||||
push edi
|
||||
loader_patch3:
|
||||
.main_loop:
|
||||
cmp edi, dword 0 ; will be patched: end of data to unpack
|
||||
jae .main_loop_done
|
||||
|
||||
if posStateMask
|
||||
mov edx, edi
|
||||
and edx, posStateMask
|
||||
else
|
||||
xor edx, edx
|
||||
end if
|
||||
push eax ; al = previous byte
|
||||
lea eax, [ebp + ((p+IsMatch*4) shr (kNumPosBitsMax+2))]
|
||||
shl eax, kNumPosBitsMax+2
|
||||
if posStateMask
|
||||
call RangeDecoderBitDecode_edx
|
||||
else
|
||||
call RangeDecoderBitDecode
|
||||
end if
|
||||
pop eax
|
||||
jc .1
|
||||
|
||||
movzx eax, al
|
||||
if literalPosMask
|
||||
mov ah, dl
|
||||
and ah, literalPosMask
|
||||
end if
|
||||
if ((LZMA_LIT_SIZE*4) and ((1 shl (8-lc)) - 1)) <> 0
|
||||
shr eax, 8-lc
|
||||
imul eax, LZMA_LIT_SIZE*4
|
||||
else
|
||||
and al, not ((1 shl (8-lc)) - 1)
|
||||
imul eax, (LZMA_LIT_SIZE*4) shr (8-lc)
|
||||
end if
|
||||
add eax, p+Literal*4
|
||||
mov dl, 1
|
||||
cmp ebp, kNumLitStates
|
||||
jb .literal
|
||||
|
||||
mov cl, [edi + esi]
|
||||
;--------------------------------------
|
||||
.lx0:
|
||||
add cl, cl
|
||||
adc dh, 1
|
||||
call RangeDecoderBitDecode_edx
|
||||
|
||||
adc dl, dl
|
||||
jc .lx1
|
||||
|
||||
xor dh, dl
|
||||
test dh, 1
|
||||
mov dh, 0
|
||||
jnz .lx0
|
||||
;--------------------------------------
|
||||
.literal:
|
||||
@@:
|
||||
call RangeDecoderBitDecode_edx
|
||||
adc dl, dl
|
||||
jnc @b
|
||||
;--------------------------------------
|
||||
.lx1:
|
||||
mov eax, ebp
|
||||
cmp al, 4
|
||||
jb @f
|
||||
|
||||
cmp al, 10
|
||||
mov al, 3
|
||||
jb @f
|
||||
|
||||
mov al, 6
|
||||
@@:
|
||||
sub ebp, eax
|
||||
xchg eax, edx
|
||||
;--------------------------------------
|
||||
.stosb_main_loop:
|
||||
stosb
|
||||
jmp .main_loop
|
||||
;*********************************************************************
|
||||
.1:
|
||||
lea eax, [p + IsRep*4 + ebp*4]
|
||||
call RangeDecoderBitDecode
|
||||
jnc .10
|
||||
|
||||
add eax, (IsRepG0 - IsRep)*4 ;lea eax, [p + IsRepG0*4 + ebp*4]
|
||||
call RangeDecoderBitDecode
|
||||
jc .111
|
||||
|
||||
mov eax, ebp
|
||||
shl eax, kNumPosBitsMax+2
|
||||
add eax, p + IsRep0Long*4
|
||||
call RangeDecoderBitDecode_edx
|
||||
jc .1101
|
||||
|
||||
cmp ebp, 7
|
||||
sbb ebp, ebp
|
||||
lea ebp, [ebp+ebp+11]
|
||||
mov al, [edi + esi]
|
||||
jmp .stosb_main_loop
|
||||
;*********************************************************************
|
||||
.111:
|
||||
add eax, (IsRepG1 - IsRepG0) * 4 ;lea eax, [p + IsRepG1*4 + ebp*4]
|
||||
call RangeDecoderBitDecode
|
||||
xchg esi, [rep1]
|
||||
jnc @f
|
||||
|
||||
add eax, (IsRepG2 - IsRepG1) * 4 ;lea eax, [p + IsRepG2*4 + ebp*4]
|
||||
call RangeDecoderBitDecode
|
||||
xchg esi, [rep2]
|
||||
jnc @f
|
||||
|
||||
xchg esi, [rep3]
|
||||
;--------------------------------------
|
||||
@@:
|
||||
.1101:
|
||||
mov eax, p + RepLencoder*4
|
||||
call LzmaLenDecode
|
||||
|
||||
push 8
|
||||
jmp .rmu
|
||||
;*********************************************************************
|
||||
.10:
|
||||
xchg esi, [rep1]
|
||||
xchg esi, [rep2]
|
||||
mov [rep3], esi
|
||||
mov eax, p + Lencoder*4
|
||||
call LzmaLenDecode
|
||||
|
||||
push kNumLenToPosStates-1
|
||||
pop edx
|
||||
cmp edx, ecx
|
||||
jb @f
|
||||
|
||||
mov edx, ecx
|
||||
;--------------------------------------
|
||||
@@:
|
||||
push ecx
|
||||
push kNumPosSlotBits
|
||||
pop ecx
|
||||
mov eax, p+PosSlot*4
|
||||
shl edx, cl
|
||||
call RangeDecoderBitTreeDecode
|
||||
|
||||
mov esi, ecx
|
||||
cmp ecx, kStartPosModelIndex
|
||||
jb .l6
|
||||
|
||||
mov edx, ecx
|
||||
xor eax, eax
|
||||
shr ecx, 1
|
||||
adc al, 2
|
||||
dec ecx
|
||||
shl eax, cl
|
||||
mov esi, eax
|
||||
sub eax, edx
|
||||
lea eax, [p + (SpecPos - 1)*4 + eax*4]
|
||||
cmp edx, kEndPosModelIndex
|
||||
jb .l59
|
||||
; call RangeDecoderDecodeDirectBits
|
||||
;RangeDecoderDecodeDirectBits:
|
||||
xor eax, eax
|
||||
;--------------------------------------
|
||||
.l:
|
||||
shr dword [range], 1
|
||||
add eax, eax
|
||||
mov edx, [code_]
|
||||
sub edx, [range]
|
||||
jb @f
|
||||
|
||||
mov [code_], edx
|
||||
add al, 1 shl kNumAlignBits
|
||||
;--------------------------------------
|
||||
@@:
|
||||
call update_decoder
|
||||
dec ecx
|
||||
cmp ecx, kNumAlignBits
|
||||
jnz .l
|
||||
; ret
|
||||
add esi, eax
|
||||
mov eax, p+Align_*4
|
||||
;--------------------------------------
|
||||
.l59:
|
||||
; call RangeDecoderReverseBitTreeDecode_addesi
|
||||
;_RangeDecoderReverseBitTreeDecode_addesi:
|
||||
; in: eax->probs,ecx=numLevels
|
||||
; out: esi+=length; destroys edx
|
||||
push edi
|
||||
xor edx, edx
|
||||
inc edx
|
||||
mov edi, edx
|
||||
;--------------------------------------
|
||||
@@:
|
||||
call RangeDecoderBitDecode_edx
|
||||
jnc .591
|
||||
|
||||
add esi, edi
|
||||
stc
|
||||
;--------------------------------------
|
||||
.591:
|
||||
adc edx, edx
|
||||
add edi, edi
|
||||
loop @b
|
||||
|
||||
pop edi
|
||||
; ret
|
||||
;--------------------------------------
|
||||
.l6:
|
||||
pop ecx
|
||||
not esi
|
||||
push 7
|
||||
;--------------------------------------
|
||||
.rmu:
|
||||
cmp ebp, 7
|
||||
pop ebp
|
||||
jb @f
|
||||
add ebp, 3
|
||||
;--------------------------------------
|
||||
@@:
|
||||
.repmovsb:
|
||||
inc ecx
|
||||
push esi
|
||||
add esi, edi
|
||||
rep movsb
|
||||
|
||||
lodsb
|
||||
pop esi
|
||||
jmp .stosb_main_loop
|
||||
;*********************************************************************
|
||||
.main_loop_done:
|
||||
include 'calltrick2.inc'
|
||||
ret
|
||||
;*********************************************************************
|
||||
_RangeDecoderBitDecode:
|
||||
; in: eax->prob
|
||||
; out: CF=bit
|
||||
push edx
|
||||
mov edx, [range]
|
||||
shr edx, kNumBitModelTotalBits
|
||||
imul edx, [eax]
|
||||
cmp [code_], edx
|
||||
jae .ae
|
||||
|
||||
mov [range], edx
|
||||
mov edx, kBitModelTotal
|
||||
sub edx, [eax]
|
||||
shr edx, kNumMoveBits
|
||||
add [eax], edx
|
||||
;--------------------------------------
|
||||
.n:
|
||||
pushfd
|
||||
call update_decoder
|
||||
|
||||
popfd
|
||||
pop edx
|
||||
ret
|
||||
;*********************************************************************
|
||||
.ae:
|
||||
sub [range], edx
|
||||
sub [code_], edx
|
||||
mov edx, [eax]
|
||||
shr edx, kNumMoveBits
|
||||
sub [eax], edx
|
||||
stc
|
||||
jmp .n
|
||||
;*********************************************************************
|
||||
update_decoder:
|
||||
cmp byte [range+3], 0 ;cmp dword [range], kTopValue
|
||||
jnz @f ;jae @f
|
||||
|
||||
shl dword [range], 8
|
||||
shl dword [code_], 8
|
||||
push eax
|
||||
mov eax, [inptr_ldr]
|
||||
mov al, [eax]
|
||||
inc dword [inptr_ldr]
|
||||
mov byte [code_], al
|
||||
pop eax
|
||||
@@:
|
||||
ret
|
||||
;*********************************************************************
|
||||
_RangeDecoderBitDecode_edx:
|
||||
push eax
|
||||
lea eax, [eax+edx*4]
|
||||
call RangeDecoderBitDecode
|
||||
|
||||
pop eax
|
||||
ret
|
||||
;*********************************************************************
|
||||
LzmaLenDecode:
|
||||
; in: eax->prob, edx=posState
|
||||
; out: ecx=len
|
||||
|
||||
; LenChoice==0
|
||||
; add eax, LenChoice*4
|
||||
if kLenNumMidBits <> kLenNumLowBits
|
||||
error in optimization
|
||||
end if
|
||||
mov cl, kLenNumMidBits
|
||||
call RangeDecoderBitDecode
|
||||
jnc .0
|
||||
|
||||
add eax, (LenChoice2-LenChoice)*4
|
||||
call RangeDecoderBitDecode
|
||||
jc @f
|
||||
if (kLenNumMidBits <> 3) | (LenMid-LenChoice2 > 0x7F + kLenNumMidBits)
|
||||
shl edx, cl
|
||||
add edx, LenMid-LenChoice2
|
||||
else
|
||||
lea edx, [ecx + edx*8 - kLenNumMidBits + LenMid-LenChoice2]
|
||||
end if
|
||||
push kLenNumLowSymbols
|
||||
jmp RangeDecoderBitTreeDecode.1
|
||||
;*********************************************************************
|
||||
@@:
|
||||
mov edx, LenHigh-LenChoice2
|
||||
mov cl, kLenNumHighBits
|
||||
push kLenNumLowSymbols + kLenNumMidSymbols
|
||||
jmp RangeDecoderBitTreeDecode.1
|
||||
;*********************************************************************
|
||||
.0:
|
||||
shl edx, cl
|
||||
if LenLow = 2
|
||||
inc edx
|
||||
inc edx
|
||||
else
|
||||
add edx, LenLow
|
||||
end if
|
||||
;--------------------------------------
|
||||
RangeDecoderBitTreeDecode:
|
||||
; in: eax+edx*4->probs,ecx=numLevels
|
||||
; out: ecx=length; destroys edx
|
||||
push 0
|
||||
.1:
|
||||
lea eax, [eax+edx*4]
|
||||
xor edx, edx
|
||||
inc edx
|
||||
push ecx
|
||||
@@:
|
||||
call RangeDecoderBitDecode_edx
|
||||
|
||||
adc edx, edx
|
||||
loop @b
|
||||
|
||||
pop ecx
|
||||
btc edx, ecx
|
||||
pop ecx
|
||||
add ecx, edx
|
||||
ret
|
||||
loader_size = $ - loader_start
|
||||
;*********************************************************************
|
||||
3348
programs/other/kerpack/trunk/lzma_compress.inc
Normal file
3348
programs/other/kerpack/trunk/lzma_compress.inc
Normal file
File diff suppressed because it is too large
Load Diff
12
programs/other/kerpack/trunk/lzma_set_dict_size.inc
Normal file
12
programs/other/kerpack/trunk/lzma_set_dict_size.inc
Normal file
@ -0,0 +1,12 @@
|
||||
;* Call: ***************************************************************
|
||||
; lzma_set_dict_size(unsigned logdictsize)
|
||||
lzma_set_dict_size:
|
||||
mov ecx,[esp+4]
|
||||
xor eax,eax
|
||||
inc eax
|
||||
shl eax,cl
|
||||
mov [_dictionarySize],eax
|
||||
lea eax,[ecx+ecx]
|
||||
mov [_distTableSize],eax
|
||||
ret 4
|
||||
;*****************************************************************************
|
||||
Loading…
Reference in New Issue
Block a user