I'm using fasm to compile a dll that uses macros shipped with fasm, i would like to see what the output is after the preprocessor stage but before the binary stage. Is there any way to see this? I would like to quickly see what is being generated to see if it's Worth getting rid of the dependency on the macro.
Fresh IDE has a feature "Unroll macro" - compile the source, position the caret on the row with the macro invocation and press Ctrl+U or select from the drop down menu "Unroll macro". The preprocessed code will be displayed on the scratch pad window.
If you want the whole preprocessed code at once - use the converting tools located in the FASM package, in the directory tools/ - you need to compile tools/%YOUR_OS%/prepsrc.asm.
But you should always remember, that the reverse side of having so powerful macro engine is that the complex macros are pretty hard to debug.