PUSH EAX
PUSH EDX
MOV EDX,ECX
CALL @Init

@init:
PUSH EBP
MOV EBP,ESP
SUB ESP,8
PUSH EBX
PUSH ESI
PUSH EDI
MOV EAX,EDX
MOV EDI,ECX
CMP EDI,EAX
MOV BYTE PTR SS:[EBP-1],0
JNZ @Jump1
MOV EAX,DWORD PTR SS:[EBP+8]
PUSH EAX
Call @Call
ADD ESP,4
MOV BYTE PTR SS:[EBP-1],1

@Jump1:
MOV ECX,DWORD PTR SS:[EBP+8]
MOV EDX,ECX
SHR EDX,2
AND ECX,3
TEST EDX,EDX
MOV DWORD PTR SS:[EBP-8],ECX
JBE @Jump2
MOV ESI,DWORD PTR DS:[EDI]
XOR ESI,DWORD PTR SS:[EBP+0Ch]
CMP EDX,1
MOV DWORD PTR DS:[EAX],ESI
JBE @Jump3
MOV ESI,EAX
LEA EBX,DWORD PTR DS:[EDX-1]
LEA ECX,DWORD PTR DS:[EDI+4]
SUB ESI,EDI
MOV DWORD PTR SS:[EBP+0Ch],EBX

@Loop1:
MOV EBX,DWORD PTR DS:[ECX-4]
XOR EBX,DWORD PTR DS:[ECX]
ADD ECX,4
SUB DWORD PTR SS:[EBP+0Ch],1
MOV DWORD PTR DS:[ESI+ECX-4],EBX
JNZ @Loop1
MOV ECX,DWORD PTR SS:[EBP-8]

@Jump3:
MOV ECX,DWORD PTR SS:[EBP-8]
ADD EDX,EDX
ADD EDX,EDX
MOV ESI,DWORD PTR DS:[EDX+EDI-4]
MOV DWORD PTR SS:[EBP+0Ch],ESI
MOV ESI,EDX
JMP @Jump4

@Jump2:
MOV EDX,DWORD PTR SS:[EBP+0Ch]
MOV DWORD PTR SS:[EBP+0Ch],EDX
XOR ESI,ESI

@Jump4:
TEST ECX,ECX
JBE @Jump5
MOV EDX,DWORD PTR SS:[EBP-8]
MOV EBX,EDI
ADD ESI,EAX
XOR ECX,ECX
SUB EBX,EAX
MOV DWORD PTR SS:[EBP-8],EDX
MOV EDI,EDI

@Loop2:
MOV EDX,DWORD PTR SS:[EBP+0Ch]
SHR EDX,CL
ADD ECX,8
ADD ESI,1
XOR DL,BYTE PTR DS:[EBX+ESI-1]
SUB DWORD PTR SS:[EBP-8],1
MOV BYTE PTR DS:[ESI-1],DL
JNZ @Loop2

@Jump5:
MOV ECX,DWORD PTR SS:[EBP+8]
MOV EDX,ECX
SHR ECX,2
MOV ESI,EAX
REP MOVS DWORD PTR ES:[EDI],DWORD PTR DS:[ESI]
MOV ECX,EDX
AND ECX,3
CMP BYTE PTR SS:[EBP-1],0
REP MOVS BYTE PTR ES:[EDI],BYTE PTR DS:[ESI]
POP EDI
POP ESI
POP EBX
JE @Jump6
PUSH EAX
CALL @CallShadow
ADD ESP,4

@Jump6:
MOV ESP,EBP
POP EBP
RET 8

@Call:
MOV ECX, 3Eh
ret

@CallShadow:
ret

end;