Strings?

[hutch--]

Rui,

Code Select Expand


    mov eax, -1
    mov esi, 1


The "mov eax, -1" could be slightly shorter wit "or eax, -1" but it hardly matters.

Preseting EAX with -1 and putting the ADD EAX before the byte copy means you don't have to correct the result on exit from the loop.

Using ESI to store 1 allows you to do the ADD on a register to register which is faster on some hardware than using an immediate. "add eax, esi"