397 lines
8.7 KiB
PHP
397 lines
8.7 KiB
PHP
|
;-----------------------------------------------------------------------------
|
||
|
|
TokenEnd = 1
|
||
|
|
TokenReg = 2
|
||
|
|
TokenHex = 3
|
||
|
|
TokenOr = 4
|
||
|
|
TokenAnd = 5
|
||
|
|
TokenXor = 6
|
||
|
|
TokenAdd = 7
|
||
|
|
TokenSub = 8
|
||
|
|
TokenMul = 9
|
||
|
|
TokenDiv = 10
|
||
|
|
TokenLP = 11
|
||
|
|
TokenRP = 12
|
||
|
|
TokenErr = -1
|
||
|
|
;-----------------------------------------------------------------------------
|
||
|
|
RegTable:
|
||
|
|
db 2,'al',0
|
||
|
|
db 2,'cl',1
|
||
|
|
db 2,'dl',2
|
||
|
|
db 2,'bl',3
|
||
|
|
db 2,'ah',4
|
||
|
|
db 2,'ch',5
|
||
|
|
db 2,'dh',6
|
||
|
|
db 2,'bh',7
|
||
|
|
db 2,'ax',8
|
||
|
|
db 2,'cx',9
|
||
|
|
db 2,'dx',10
|
||
|
|
db 2,'bx',11
|
||
|
|
db 2,'sp',12
|
||
|
|
db 2,'bp',13
|
||
|
|
db 2,'si',14
|
||
|
|
db 2,'di',15
|
||
|
|
db 3,'eax',16
|
||
|
|
db 3,'ecx',17
|
||
|
|
db 3,'edx',18
|
||
|
|
db 3,'ebx',19
|
||
|
|
db 3,'esp',20
|
||
|
|
db 3,'ebp',21
|
||
|
|
db 3,'esi',22
|
||
|
|
db 3,'edi',23
|
||
|
|
db 3,'eip',24
|
||
|
|
db 0
|
||
|
|
;-----------------------------------------------------------------------------
|
||
|
|
; Check if byte is hex digit
|
||
|
|
IsHexDigit:
|
||
|
|
cmp al,'0'
|
||
|
|
jb .No
|
||
|
|
cmp al,'9'
|
||
|
|
jbe .09
|
||
|
|
cmp al,'A'
|
||
|
|
jb .No
|
||
|
|
cmp al,'F'
|
||
|
|
jbe .AF
|
||
|
|
cmp al,'a'
|
||
|
|
jb .No
|
||
|
|
cmp al,'f'
|
||
|
|
jbe .FA
|
||
|
|
.No:
|
||
|
|
stc
|
||
|
|
ret
|
||
|
|
.09:
|
||
|
|
sub al,'0'
|
||
|
|
; clc
|
||
|
|
ret
|
||
|
|
.AF:
|
||
|
|
sub al,'A'-10
|
||
|
|
; clc
|
||
|
|
ret
|
||
|
|
.FA:
|
||
|
|
sub al,'a'-10
|
||
|
|
; clc
|
||
|
|
ret
|
||
|
|
|
||
|
|
;-----------------------------------------------------------------------------
|
||
|
|
; Find register in the table
|
||
|
|
FindReg:
|
||
|
|
mov edi,RegTable
|
||
|
|
.FindReg:
|
||
|
|
movzx ecx,byte [edi]
|
||
|
|
stc
|
||
|
|
jecxz .RegNotFound
|
||
|
|
inc edi
|
||
|
|
push esi edi ecx
|
||
|
|
@@:
|
||
|
|
lodsb
|
||
|
|
or al,20h
|
||
|
|
scasb
|
||
|
|
loopz @B
|
||
|
|
pop ecx edi esi
|
||
|
|
lea edi,[edi+ecx+1]
|
||
|
|
jnz .FindReg
|
||
|
|
movzx edi,byte [edi-1]
|
||
|
|
add esi,ecx
|
||
|
|
.RegNotFound:
|
||
|
|
ret
|
||
|
|
|
||
|
|
;-----------------------------------------------------------------------------
|
||
|
|
; Tokenize expressions
|
||
|
|
ExprGetToken:
|
||
|
|
lodsb
|
||
|
|
cmp al,0
|
||
|
|
jz .EndToken
|
||
|
|
cmp al,' '
|
||
|
|
jbe ExprGetToken
|
||
|
|
cmp al,'|'
|
||
|
|
jz .Or
|
||
|
|
cmp al,'&'
|
||
|
|
jz .And
|
||
|
|
cmp al,'^'
|
||
|
|
jz .Xor
|
||
|
|
cmp al,'+'
|
||
|
|
jz .Add
|
||
|
|
cmp al,'-'
|
||
|
|
jz .Sub
|
||
|
|
cmp al,'*'
|
||
|
|
jz .Mul
|
||
|
|
cmp al,'/'
|
||
|
|
jz .Div
|
||
|
|
cmp al,'('
|
||
|
|
jz .LP
|
||
|
|
cmp al,')'
|
||
|
|
jnz .NotSign
|
||
|
|
.RP:
|
||
|
|
mov al,TokenRP
|
||
|
|
ret
|
||
|
|
.Or:
|
||
|
|
mov al,TokenOr
|
||
|
|
ret
|
||
|
|
.And:
|
||
|
|
mov al,TokenAnd
|
||
|
|
ret
|
||
|
|
.Xor:
|
||
|
|
mov al,TokenXor
|
||
|
|
ret
|
||
|
|
.Div:
|
||
|
|
mov al,TokenDiv
|
||
|
|
ret
|
||
|
|
.EndToken:
|
||
|
|
mov al,TokenEnd
|
||
|
|
ret
|
||
|
|
.Add:
|
||
|
|
mov al,TokenAdd
|
||
|
|
ret
|
||
|
|
.Sub:
|
||
|
|
mov al,TokenSub
|
||
|
|
ret
|
||
|
|
.Mul:
|
||
|
|
mov al,TokenMul
|
||
|
|
ret
|
||
|
|
.LP:
|
||
|
|
mov al,TokenLP
|
||
|
|
ret
|
||
|
|
.NotSign:
|
||
|
|
dec esi
|
||
|
|
call FindReg
|
||
|
|
jc .RegNotFound
|
||
|
|
mov al,TokenReg
|
||
|
|
ret
|
||
|
|
.RegNotFound:
|
||
|
|
; test for symbol
|
||
|
|
push esi
|
||
|
|
@@:
|
||
|
|
lodsb
|
||
|
|
cmp al,' '
|
||
|
|
ja @B
|
||
|
|
push eax
|
||
|
|
mov byte [esi],0
|
||
|
|
xchg esi,[esp+4]
|
||
|
|
call FindSymbolName
|
||
|
|
mov edi,eax
|
||
|
|
pop eax
|
||
|
|
xchg esi,[esp]
|
||
|
|
mov byte [esi],al
|
||
|
|
jc @F
|
||
|
|
add esp,4
|
||
|
|
mov al,TokenHex
|
||
|
|
ret
|
||
|
|
@@:
|
||
|
|
pop esi
|
||
|
|
; test for hex number
|
||
|
|
xor ecx,ecx
|
||
|
|
xor edi,edi
|
||
|
|
xor eax,eax
|
||
|
|
@@:
|
||
|
|
lodsb
|
||
|
|
call IsHexDigit
|
||
|
|
jc @F
|
||
|
|
shl edi,4
|
||
|
|
or edi,eax
|
||
|
|
inc ecx
|
||
|
|
jmp @B
|
||
|
|
@@:
|
||
|
|
dec esi
|
||
|
|
jecxz .Err
|
||
|
|
cmp ecx,8
|
||
|
|
ja .Err
|
||
|
|
mov al,TokenHex
|
||
|
|
ret
|
||
|
|
.Err:
|
||
|
|
mov al,TokenErr
|
||
|
|
mov esi,aParseError
|
||
|
|
ret
|
||
|
|
|
||
|
|
;-----------------------------------------------------------------------------
|
||
|
|
ExprRead2:
|
||
|
|
cmp al,TokenHex
|
||
|
|
jz .Hex
|
||
|
|
cmp al,TokenReg
|
||
|
|
jz .Reg
|
||
|
|
cmp al,TokenLP
|
||
|
|
jz .LP
|
||
|
|
mov al,TokenErr
|
||
|
|
mov esi,aParseError
|
||
|
|
ret
|
||
|
|
.Hex:
|
||
|
|
mov ebp,edi
|
||
|
|
.Ret:
|
||
|
|
jmp ExprGetToken
|
||
|
|
.Reg:
|
||
|
|
cmp edi,24
|
||
|
|
jz .EIP
|
||
|
|
sub edi,4
|
||
|
|
jb .8LO
|
||
|
|
sub edi,4
|
||
|
|
jb .8HI
|
||
|
|
sub edi,8
|
||
|
|
jb .16
|
||
|
|
mov ebp,[_EAX+edi*4]
|
||
|
|
jmp .Ret
|
||
|
|
.16:
|
||
|
|
movzx ebp,word [_EAX+(edi+8)*4]
|
||
|
|
jmp .Ret
|
||
|
|
.8LO:
|
||
|
|
movzx ebp,byte [_EAX+(edi+4)*4]
|
||
|
|
jmp .Ret
|
||
|
|
.8HI:
|
||
|
|
movzx ebp,byte [_EAX+(edi+4)*4+1]
|
||
|
|
jmp .Ret
|
||
|
|
.EIP:
|
||
|
|
mov ebp,[_EIP]
|
||
|
|
jmp .Ret
|
||
|
|
.LP:
|
||
|
|
call ExprGetToken
|
||
|
|
call ExprRead0
|
||
|
|
cmp al,TokenErr
|
||
|
|
jz @F
|
||
|
|
cmp al,TokenRP
|
||
|
|
jz ExprGetToken
|
||
|
|
mov al,TokenErr
|
||
|
|
mov esi,aParseError
|
||
|
|
@@:
|
||
|
|
ret
|
||
|
|
|
||
|
|
;-----------------------------------------------------------------------------
|
||
|
|
ExprRead1:
|
||
|
|
call ExprRead2
|
||
|
|
.1:
|
||
|
|
cmp al,TokenMul
|
||
|
|
jz .Mul
|
||
|
|
cmp al,TokenDiv
|
||
|
|
jz .Div
|
||
|
|
ret
|
||
|
|
.Mul:
|
||
|
|
push ebp
|
||
|
|
call ExprGetToken
|
||
|
|
call ExprRead2
|
||
|
|
pop edx
|
||
|
|
; ebp := edx*ebp
|
||
|
|
imul ebp,edx
|
||
|
|
jmp .1
|
||
|
|
.Div:
|
||
|
|
push ebp
|
||
|
|
call ExprGetToken
|
||
|
|
call ExprRead2
|
||
|
|
pop edx
|
||
|
|
; ebp := edx/ebp
|
||
|
|
test ebp,ebp
|
||
|
|
jz .Div0
|
||
|
|
push eax
|
||
|
|
xor eax,eax
|
||
|
|
xchg eax,edx
|
||
|
|
div ebp
|
||
|
|
xchg eax,ebp
|
||
|
|
pop eax
|
||
|
|
jmp .1
|
||
|
|
.Div0:
|
||
|
|
mov al,TokenErr
|
||
|
|
mov esi,aDivByZero
|
||
|
|
ret
|
||
|
|
|
||
|
|
;-----------------------------------------------------------------------------
|
||
|
|
ExprRead0:
|
||
|
|
xor ebp,ebp
|
||
|
|
cmp al,TokenOr
|
||
|
|
jz .Or
|
||
|
|
cmp al,TokenAnd
|
||
|
|
jz .And
|
||
|
|
cmp al,TokenXor
|
||
|
|
jz .Xor
|
||
|
|
cmp al,TokenAdd
|
||
|
|
jz .Add
|
||
|
|
cmp al,TokenSub
|
||
|
|
jz .Sub
|
||
|
|
call ExprRead1
|
||
|
|
.1:
|
||
|
|
cmp al,TokenOr
|
||
|
|
jz .Or
|
||
|
|
cmp al,TokenAnd
|
||
|
|
jz .And
|
||
|
|
cmp al,TokenXor
|
||
|
|
jz .Xor
|
||
|
|
cmp al,TokenAdd
|
||
|
|
jz .Add
|
||
|
|
cmp al,TokenSub
|
||
|
|
jz .Sub
|
||
|
|
ret
|
||
|
|
.Or:
|
||
|
|
push ebp
|
||
|
|
call ExprGetToken
|
||
|
|
call ExprRead1
|
||
|
|
pop edx
|
||
|
|
; ebp := edx | ebp
|
||
|
|
or ebp,edx
|
||
|
|
jmp .1
|
||
|
|
.And:
|
||
|
|
push ebp
|
||
|
|
call ExprGetToken
|
||
|
|
call ExprRead1
|
||
|
|
pop edx
|
||
|
|
; ebp := edx & ebp
|
||
|
|
and ebp,edx
|
||
|
|
jmp .1
|
||
|
|
.Xor:
|
||
|
|
push ebp
|
||
|
|
call ExprGetToken
|
||
|
|
call ExprRead1
|
||
|
|
pop edx
|
||
|
|
; ebp := edx ^ ebp
|
||
|
|
xor ebp,edx
|
||
|
|
jmp .1
|
||
|
|
.Add:
|
||
|
|
push ebp
|
||
|
|
call ExprGetToken
|
||
|
|
call ExprRead1
|
||
|
|
pop edx
|
||
|
|
; ebp := edx+ebp
|
||
|
|
add ebp,edx
|
||
|
|
jmp .1
|
||
|
|
.Sub:
|
||
|
|
push ebp
|
||
|
|
call ExprGetToken
|
||
|
|
call ExprRead1
|
||
|
|
pop edx
|
||
|
|
; ebp := edx-ebp
|
||
|
|
xchg edx,ebp
|
||
|
|
sub ebp,edx
|
||
|
|
jmp .1
|
||
|
|
|
||
|
|
;-----------------------------------------------------------------------------
|
||
|
|
; in: esi->expression
|
||
|
|
; out: CF=1 if error
|
||
|
|
; CF=0 and ebp=value if ok
|
||
|
|
CalcExpression:
|
||
|
|
call ExprGetToken
|
||
|
|
call ExprRead0
|
||
|
|
cmp al,TokenEnd
|
||
|
|
jz .End
|
||
|
|
cmp al,TokenErr
|
||
|
|
jz @F
|
||
|
|
mov esi,aParseError
|
||
|
|
@@:
|
||
|
|
call PutMessage
|
||
|
|
stc
|
||
|
|
ret
|
||
|
|
.End:
|
||
|
|
clc
|
||
|
|
ret
|
||
|
|
|
||
|
|
GetArg:
|
||
|
|
lodsb
|
||
|
|
cmp al,' '
|
||
|
|
ja GetArg
|
||
|
|
mov byte [esi-1],0
|
||
|
|
cmp al,0
|
||
|
|
jnz .SkipSpaces
|
||
|
|
dec esi
|
||
|
|
|
||
|
|
.SkipSpaces:
|
||
|
|
lodsb
|
||
|
|
cmp al,0
|
||
|
|
jz @F
|
||
|
|
cmp al,' '
|
||
|
|
jbe .SkipSpaces
|
||
|
|
@@:
|
||
|
|
dec esi
|
||
|
|
ret
|