Counting, adding and eax invalid instruction

[raymond]

It's pretty easy to implement the equivalent (as MichaelW points out), just by decrementing the counter yourself.

And, if you're not concerned with timing nor instruction size, it would always be safe (never get trashed by external functions) to use a memory variable as the counter for complex loops.

Code Select Expand

mov counter,xxx
top_of_loop:
....
....
dec counter
jnz top_of_loop