616 lines
11 KiB
PHP
616 lines
11 KiB
PHP
; @RCHER main algorythm
|
|
; Written in pure assembler by Ivushkin Andrey aka Willow
|
|
|
|
macro get_a _type,_size,c1,c2,c3,c4,c5
|
|
{
|
|
get_#_type:
|
|
local .no,.no0,.ex
|
|
push edx
|
|
and [Flags],not 1
|
|
if _type eq Len
|
|
cmp eax,c4
|
|
jne .no
|
|
mov eax,c5
|
|
jmp .ex
|
|
.no:
|
|
end if
|
|
sub eax,c1
|
|
ja .no0
|
|
add eax,c2
|
|
jmp .ex
|
|
.no0:
|
|
add eax,c3
|
|
push eax
|
|
mov ecx,eax
|
|
shr ecx,_size
|
|
xor eax,eax
|
|
call read_bits
|
|
pop edx
|
|
and edx,1 shl _size-1
|
|
shl edx,cl
|
|
movzx ecx,[tblH#_type+ecx*2]
|
|
add edx,ecx
|
|
add eax,edx
|
|
.ex:
|
|
or [Flags],1
|
|
pop edx
|
|
ret
|
|
}
|
|
; *************************
|
|
|
|
Deflate:
|
|
mov edi,[outp]
|
|
.init:
|
|
mov [bits],8
|
|
lodsb
|
|
call setcurb
|
|
.blkbegin:
|
|
and [lastblk],0
|
|
and [Flags],not 1
|
|
rbits 0,1
|
|
test eax,eax
|
|
je .nolast
|
|
mov [lastblk],1
|
|
.nolast:
|
|
rbits 0,2
|
|
cmp eax,10b
|
|
je .DynHuff
|
|
cmp eax,01b
|
|
je .static
|
|
test eax,eax
|
|
jnz .errorID
|
|
Msg 30
|
|
movzx ecx,[bits]
|
|
call read_bits
|
|
movzx ecx,word[esi-1]
|
|
add esi,3
|
|
rep movsb
|
|
jmp .check_last
|
|
.errorID:
|
|
Msg 6
|
|
ret
|
|
; Static Huffman
|
|
.static:
|
|
if SHOW_METH eq 1
|
|
Msg 20
|
|
end if
|
|
mov edi,[outp]
|
|
or [Flags],1
|
|
.next:
|
|
rbits 0,7
|
|
; stop
|
|
cmp eax,0x17
|
|
ja .no7
|
|
add eax,256
|
|
cmp eax,256
|
|
jne .noend
|
|
.check_last:
|
|
mov [outp],edi
|
|
cmp [lastblk],1
|
|
je .ex
|
|
jmp .blkbegin
|
|
.noend:
|
|
call get_Len
|
|
mov ebx,eax
|
|
rbits 0,5
|
|
call get_Dist
|
|
neg eax
|
|
push esi
|
|
lea esi,[edi+eax]
|
|
mov ecx,ebx
|
|
rep movsb
|
|
pop esi
|
|
jmp .next
|
|
.no7:
|
|
rbits eax,1
|
|
cmp eax,0xc8
|
|
jb .no9
|
|
rbits eax,1
|
|
sub eax,0xd0
|
|
jmp .no81
|
|
.no9:
|
|
cmp eax,0xc0
|
|
jb .no81
|
|
add eax,0x58
|
|
jmp .noend
|
|
.no81:
|
|
sub eax,0x30
|
|
stosb
|
|
jmp .next
|
|
.ex:
|
|
ret
|
|
; ************* dynamic Huffman ************
|
|
|
|
.DynHuff:
|
|
; dps '##'
|
|
if SHOW_METH eq 1
|
|
Msg 19
|
|
end if
|
|
pusha
|
|
xor eax,eax
|
|
mov ecx,(output-bl_count) / 4
|
|
mov edi,bl_count
|
|
rep stosd
|
|
popa
|
|
|
|
; max_len=0
|
|
and [max_len],0
|
|
rbits 0,5
|
|
; hlit-257
|
|
add eax,257
|
|
mov [hlit],ax
|
|
rbits 0,5
|
|
; hdist-1
|
|
inc eax
|
|
mov [hdist],al
|
|
rbits 0,4
|
|
; hclen-4
|
|
add eax,4
|
|
mov [hclen],al
|
|
mov ecx,eax
|
|
push edi
|
|
mov edi,tmp_clit
|
|
; read code lengths for code lengths
|
|
.alphloop:
|
|
push ecx
|
|
rbits 0,3
|
|
stosb
|
|
pop ecx
|
|
loop .alphloop
|
|
; sort code lengths for code lengths
|
|
push esi
|
|
movzx ecx,[hclen]
|
|
xor eax,eax
|
|
mov edi,tmp_clit
|
|
mov esi,tblSort
|
|
.sortloop:
|
|
lodsb
|
|
movzx bx,byte[edi]
|
|
mov [sorted_clit+eax*2],bx
|
|
inc edi
|
|
loop .sortloop
|
|
pop esi edi
|
|
.generate:
|
|
mov ecx,19
|
|
mov ebx,calph
|
|
mov edx,seql
|
|
mov eax,sorted_clit
|
|
call Huffc
|
|
and [tblCount],0
|
|
or [Flags],1
|
|
mov edi,Lit_c
|
|
mov ebp,sorted_clit
|
|
.again:
|
|
cmp edi,output+OUTBUF
|
|
jb ._ok
|
|
Msg 16
|
|
jmp .ex
|
|
._ok:
|
|
mov edx,seql
|
|
mov ebx,calph
|
|
call get_code
|
|
call ExpLen
|
|
cmp [hlit],ax
|
|
ja .again
|
|
if SHOW_CHARS eq 1
|
|
mov edi,Lit_c
|
|
call Show_codes
|
|
end if
|
|
mov edi,Dist_c
|
|
and [tblCount],0
|
|
.again2:
|
|
mov ebx,calph
|
|
|
|
call get_code
|
|
call ExpLen
|
|
cmp [hdist],al
|
|
ja .again2
|
|
movzx ecx,[hlit]
|
|
mov ebx,Literal
|
|
mov edx,seql
|
|
mov eax,Lit_c
|
|
call Huffc
|
|
movzx ecx,[hdist]
|
|
mov ebx,Distance
|
|
mov edx,seqd
|
|
mov eax,Dist_c
|
|
call Huffc
|
|
|
|
push [hlit]
|
|
pop [tblLen]
|
|
mov ebp,Lit_c
|
|
mov edx,seql
|
|
mov ebx,Literal
|
|
mov edi,[outp]
|
|
and [tblCount],0
|
|
.again3: ; <------------
|
|
call get_code
|
|
cmp eax,256
|
|
je .check_last
|
|
ja .dist
|
|
stosb
|
|
jmp .again3
|
|
.dist:
|
|
call get_Len
|
|
push eax ebx edx ebp
|
|
mov ecx,32
|
|
mov ebp,Dist_c
|
|
mov edx,seqd
|
|
mov ebx,Distance
|
|
mov [tblLen],32
|
|
call get_code
|
|
call get_Dist
|
|
push [hlit]
|
|
pop [tblLen]
|
|
neg eax
|
|
pop ebp edx ebx ecx
|
|
push esi
|
|
lea esi,[edi+eax]
|
|
rep movsb
|
|
pop esi
|
|
jmp .again3
|
|
|
|
; ******************************************
|
|
Huffc:
|
|
; EBX - dest array, ECX - length, EDX - br_seq dest, EAX - source array
|
|
push esi edi eax ecx
|
|
mov edi,bl_count
|
|
xor eax,eax
|
|
mov ecx,BITS
|
|
rep stosw
|
|
pop ecx
|
|
mov esi,[esp]
|
|
mov [tblLen],cx
|
|
mov [max_len],ax
|
|
; Count the number of codes for each code length
|
|
.cnt_loop:
|
|
lodsw
|
|
cmp [max_len],ax
|
|
jae .skip
|
|
mov [max_len],ax
|
|
.skip:
|
|
inc byte[bl_count+eax]
|
|
loop .cnt_loop
|
|
movzx ecx,[max_len]
|
|
xor eax,eax
|
|
and [bl_count],al
|
|
xor esi,esi ; edx - bits
|
|
mov edi,next_code+2
|
|
push ebx
|
|
; Find the numerical value of the smallest code for each code length
|
|
.nc_loop:
|
|
movzx bx,byte[bl_count+esi]
|
|
add ax,bx
|
|
shl ax,1
|
|
stosw
|
|
inc esi
|
|
loop .nc_loop
|
|
pop ebx
|
|
; clear table
|
|
movzx ecx,[tblLen]
|
|
xor eax,eax
|
|
dec eax
|
|
mov edi,ebx
|
|
rep stosw
|
|
inc eax
|
|
movzx ecx,[tblLen]
|
|
mov esi,[esp]
|
|
mov edi,ebx
|
|
; Assign numerical values to all codes
|
|
.loop3:
|
|
lodsw
|
|
test eax,eax
|
|
jz .lp
|
|
push [next_code+eax*2]
|
|
pop word[edi]
|
|
inc [next_code+eax*2]
|
|
.lp:
|
|
add edi,2
|
|
loop .loop3
|
|
; Clear all codes
|
|
xor eax,eax
|
|
mov edi,edx
|
|
movzx ecx,[max_len]
|
|
mov [edi-1],al
|
|
; Prepare read bit sequences
|
|
.rebiloop:
|
|
inc eax
|
|
cmp [bl_count+eax],0
|
|
jz .sk
|
|
stosb
|
|
inc byte[edx-1]
|
|
.sk:
|
|
loop .rebiloop
|
|
movzx ecx,byte[edx-1]
|
|
dec ecx
|
|
jecxz .noreb2
|
|
.reb2loop:
|
|
mov al,[edx+ecx-1]
|
|
sub [edx+ecx],al
|
|
loop .reb2loop
|
|
.noreb2:
|
|
pop eax edi esi
|
|
ret
|
|
|
|
; ******************************************
|
|
|
|
; get Codes of variable sizes
|
|
get_code:
|
|
; EDX - br_seq, EBX - source table, EBP - codelength table
|
|
push edx edi
|
|
xor eax,eax
|
|
movzx ecx,byte[edx-1]
|
|
mov [codel],ax
|
|
.rb3:
|
|
push ecx
|
|
movzx ecx,byte[edx]
|
|
add [codel],cx
|
|
call read_bits
|
|
movzx ecx,[tblLen]
|
|
inc ecx
|
|
mov edi,ebx
|
|
.scas:
|
|
repne scasw
|
|
jecxz .notfound
|
|
push edi ecx
|
|
sub edi,ebx
|
|
sub edi,2
|
|
mov cx,[codel]
|
|
cmp cx,[ds:ebp+edi]
|
|
jne .notfound2
|
|
mov eax,edi
|
|
shr eax,1
|
|
add esp,12
|
|
.pp:
|
|
pop edi edx
|
|
ret
|
|
.notfound2:
|
|
pop ecx
|
|
pop edi
|
|
jmp .scas
|
|
.notfound:
|
|
pop ecx
|
|
inc edx
|
|
loop .rb3
|
|
Msg 7
|
|
jmp .pp
|
|
|
|
codel dw ?
|
|
; ******************************************
|
|
ExpLen:
|
|
cmp eax,16
|
|
jae .noliteral
|
|
inc [tblCount]
|
|
stosw
|
|
jmp .nomatch
|
|
.noliteral:
|
|
and [Flags],not 1
|
|
mov ebx,3
|
|
cmp eax,17
|
|
jae .code1718
|
|
mov ecx,2
|
|
xor eax,eax
|
|
call read_bits
|
|
lea ecx,[eax+ebx]
|
|
mov ax,[edi-2]
|
|
.cc:
|
|
add [tblCount],cx
|
|
rep stosw
|
|
or [Flags],1
|
|
jmp .nomatch
|
|
.code1718:
|
|
jne .code18
|
|
mov ecx,3
|
|
.cc2:
|
|
xor eax,eax
|
|
call read_bits
|
|
lea ecx,[eax+ebx]
|
|
xor eax,eax
|
|
jmp .cc
|
|
.code18:
|
|
mov ebx,11
|
|
mov ecx,7
|
|
jmp .cc2
|
|
.nomatch:
|
|
mov ax,[tblCount]
|
|
ret
|
|
get_a Len,2,256+8,10,3,285,258
|
|
get_a Dist,1,3,4,1
|
|
|
|
|
|
; ******************************************
|
|
read_bits: ; eax-dest; ecx-count
|
|
push edx ecx
|
|
.shift:
|
|
if RBLOCK eq 4
|
|
ror [cur_byte],1
|
|
else
|
|
ror byte[cur_byte],1
|
|
end if
|
|
pushf
|
|
test [Flags],1
|
|
je .noh1
|
|
popf
|
|
rcl eax,1
|
|
jmp .dec
|
|
.noh1:
|
|
popf
|
|
rcr eax,1
|
|
.dec:
|
|
dec [bits]
|
|
jnz .loop1
|
|
.push:
|
|
push eax
|
|
mov eax,[esi]
|
|
call setcurb
|
|
pop eax
|
|
if RBLOCK eq 1
|
|
inc esi
|
|
inc [IDATcount]
|
|
else
|
|
inc esi
|
|
inc [IDATcount]
|
|
end if
|
|
cmp esi,area+INBUF-BSIZE
|
|
jbe .ok
|
|
pusha
|
|
if SHOW_RBLOCK eq 1
|
|
Msg 9
|
|
end if
|
|
mov eax,0
|
|
mov ebx,1
|
|
call FileSeek
|
|
mov [esp+4],esi
|
|
popa
|
|
.ok:
|
|
test [Flags],PNG_MODE
|
|
jz .idatok
|
|
mov edx,[IDATcount]
|
|
cmp edx,[IDATsize]
|
|
jbe .idatok
|
|
pusha
|
|
lodsd
|
|
call PngParse.nxt_sec
|
|
mov [IDATcount],1
|
|
mov [esp+4],esi
|
|
mov [esp+20],edx
|
|
popa
|
|
cmp edx,21
|
|
jne .idatok
|
|
mov eax,256
|
|
pop ecx
|
|
jmp .exx
|
|
.idatok:
|
|
|
|
mov [bits],8
|
|
.loop1:
|
|
loop .shift2
|
|
jmp .popc
|
|
.shift2:
|
|
jmp .shift
|
|
.popc:
|
|
pop ecx
|
|
test [Flags],1
|
|
jne .exx
|
|
.noh2:
|
|
rol eax,cl
|
|
.exx:
|
|
pop edx
|
|
ret
|
|
|
|
if SHOW_CHARS eq 1
|
|
Show_codes:
|
|
pusha
|
|
movzx ecx,[tblLen]
|
|
mov ecx,256
|
|
xor eax,eax
|
|
.lp2:
|
|
mov [braces+1],al
|
|
push eax ecx
|
|
invoke StrFormat,eax,strbuf,20
|
|
invoke WriteConsole,[cons],strbuf,16,param1,NULL
|
|
invoke WriteConsole,[cons],braces,6,param1,NULL
|
|
mov eax,[esp+4]
|
|
movzx eax,word[edi+eax*2]
|
|
test eax,eax
|
|
jz .skip
|
|
invoke WriteConsole,[cons],exist,6,param1,NULL
|
|
.skip:
|
|
invoke WriteConsole,[cons],braces+6,2,param1,NULL
|
|
pop ecx eax
|
|
inc eax
|
|
loop .lp
|
|
jmp .ex
|
|
.lp:
|
|
jmp .lp2
|
|
.ex:
|
|
popa
|
|
ret
|
|
|
|
cons dd ?
|
|
param1 dd ?
|
|
braces db '( ) = ',0xa, 0xd
|
|
strbuf rb 20
|
|
exist db 'exists'
|
|
end if
|
|
|
|
makeCRC:
|
|
pusha
|
|
Msg 8
|
|
mov edi,CRC32table
|
|
add edi,255*4
|
|
std
|
|
mov ecx,255
|
|
mov ebx,0xedb88320
|
|
.m1:
|
|
mov eax,ecx
|
|
push ecx
|
|
mov ecx,8
|
|
.m2:
|
|
shr eax,1
|
|
jnc .m3
|
|
xor eax,ebx
|
|
.m3:
|
|
loop .m2
|
|
pop ecx
|
|
stosd
|
|
loop .m1
|
|
popa
|
|
cld
|
|
ret
|
|
|
|
UCRC:
|
|
; in: esi - data to calculate CRC
|
|
; ecx - its length
|
|
; [_CRC32_] - previous CRC32
|
|
; out: [_CRC32_]- partial CRC32 (no pre- & post-conditioning!)
|
|
pusha
|
|
cmp dword[CRC32table+4],0x77073096
|
|
je .tbl_rdy
|
|
call makeCRC
|
|
.tbl_rdy:
|
|
mov eax,[_CRC32_]
|
|
not eax
|
|
.m1:
|
|
movzx ebx,al
|
|
shr eax,8
|
|
xor bl,[esi]
|
|
xor eax,[CRC32table+ebx*4]
|
|
inc esi
|
|
loop .m1
|
|
not eax
|
|
mov [_CRC32_],eax
|
|
popa
|
|
ret
|
|
|
|
UAdler:
|
|
; in: esi - data to calculate CRC
|
|
; ecx - its length
|
|
; [Adler32] - previous Adler32
|
|
; out: [Adler32]- partial Adler32
|
|
pusha
|
|
mov ebp,65521
|
|
movzx ebx,word[Adler32] ; s1-ebx
|
|
movzx edi,word[Adler32+2] ; s2-edi
|
|
.m1:
|
|
movzx eax,byte[esi]
|
|
add eax,ebx
|
|
xor edx,edx
|
|
div ebp
|
|
mov ebx,edx
|
|
lea eax,[edi+ebx]
|
|
xor edx,edx
|
|
div ebp
|
|
mov edi,edx
|
|
inc esi
|
|
loop .m1
|
|
shl edi,16
|
|
add edi,ebx
|
|
mov [Adler32],edi
|
|
popa
|
|
ret
|
|
|
|
tblSort db 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15
|
|
tblHLen dw 7,11,19,35,67,131
|
|
tblHDist dw 3,5,9,17,33,65,129,257,513,1025,2049,4097,8193,16385
|