Hi all,

I am writing small binary stub functions (which need to be runnable from any position in memory) which reference only themselves and the stack(offsets from EBP). I was wondering if there is a way to force FASM to output code that uses purely relative addresses for all jmp (and similar) operations? Is this the default behaviour?

Thanks,

Hyperzap

Immediate near jumps and calls are always relative. This is part of the x86 design.

I think one can craft a FASM macro which catches the longer jumps and calls and emits an warning/error. Then there is no need to force FASM to do anything. It just tells you the places where to look for too long jumps and you can rearrange your code.