Some C translated from assembly and some high level understanding

Rinndalir · 08-01-2016, 04:17 PM

Here at line 233 I am trying to understand what is happening:

https://github.com/NagyD/SDLPoP/blob.../seqtbl.c#L233

I am only looking for the simplest terms but provide what ever response you want. (Of course this goes without saying but I say it because of my novice C skills, I don't need much right now.)

There are:

LABEL(abc) abc_thing1, abc_thing2
LABEL(def) def_thing1, def_thing2, def_thing3

As far as I can LABEL(abc) doesn't do anything.

What is seqtbl? I guess it's an array but it's not clear to me.

The byte declaration is confusing too, could that not also have been char?

suicidaleggroll · 08-01-2016, 04:38 PM

LABEL(abc) and jmp(abc) go together. It's the assembly version of goto/label:
https://en.wikipedia.org/wiki/Goto

Rinndalir · 08-03-2016, 01:10 AM

The compiler is doing something with those LABEL and jmp commands? There's also a macro called LABEL. I'm a little closer toward understanding this but not by much.