How do you do __asm rol var,1 in GCC?

[dfatlf]

register unsigned var=1234;
register unsigned dwords=5;
while (dwords--) {
var+=5;
__asm rol var,1
}

I see gcc supports inline assembly, but I don't understand its format at all.

TIA!!

[Roxoff]

I thought you just did

asm
{
    rol var,1
}

[dfatlf]

I'll have to try, but you're saying the only requirement is to place it within the brackets? The information I've seen on gcc inline assembly is cryptic.