Hi All. I am trying to increment a 64-bit counter in assembly code. In fact, it is a variable "unsigned long long" from C code, and I am trying to increment it from a function written in assembly. I think a simple "incl foo" wouldn't do it, right? I am using Linux on a Pentium 4, gcc 3.3.4. I would appreciate some help. TIA, Fabiano Ramos