; Prototype:
; void strcpy(char *destination, char *source)
; Param: push from left to right
; destination: address where to save string.
; source : address where to string are.
; Function own the stack and response for pop stack.
strcpy PROC NEAR32
push ebp
mov ebp, esp
push esi
push edi
pushf
mov esi, [ebp + 8] ; Get source address.
mov edi, [ebp + 12] ; Get destination address.
whileNoNull:
cmp BYTE PTR [esi], 0 ; If null, terminated.
je endWhileNoNull
movsb ; Copy characters from source to destination.
jmp whileNoNull ; Copy one by one.
endWhileNoNull:
mov BYTE PTR [edi], 0 ; Appending a null character to the end of destination string.
popf
pop edi
pop esi
pop ebp
ret 8 ; Two parameter take up eight byte on stack
strcopy ENDP
