How Do Assemblers Map x86 Instruction Mnemonics to Binary Machine Instructions?

Question

I\'m interested in writing an x86 assembler. I\'m wondering what is a good way to map x86 assembly mnemonic instructions (using an Intel-like syntax) into the corresponding bina

Answer 1

For x86, it's complicated as hell. A little less complicated since 32-bit processors took over, but yeah. Still a pain.

You may want to take a look at nasm ( http://www.nasm.us ). It's an open source 32-bit assembler. See how they do it. Or, use it instead. :)