From Java to GAS Assembler

I have a code in Java that looks for the prime numbers from 2 to a given number using the Erastosthenes algorithm. I need to translate that code to a GAS assembler, using .bitmap, It's a pretty simle job but I know nothing about Linux assembler. I need it as soon as possible. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. ## Platform Linux