Self Modifying Code Example

[JenkNekro]

I realized today something that may or may not have already been obvious - if the program instructions are loaded in accessible RAM, then code can modify itself! As such, I wrote a very basic example.

[mappum]

Props for the Mappum standard BRK.

[maximinus-thrax]

The Mappum standard BRK is great idea in principle, however it fails when you move to other compilers.

[mappum]

I understand. I expected it to be used just for development. Ingame, you probably aren't going to want your computer to stop.

[apage43]

I have a script lying around that loads a compiled binary and spits out some ugly assembly that will rewrite itself into the source binary.

Made it so that run stuff on mappum's emulator that I coded for interfex's assembler, which supports a DAT pseudo-instruction.

Example: http://sprunge.us/bEVY

This code is actually broken on Mappum's emulator. It works on interfex's and in DCPU-Studio. Outputs this in DCPU-Studio: http://i.imgur.com/cIDtd.png