Syntax HighlightingWhen the 2012 IO-July challenge was held. There was no satisfying syntax highlighting available. miniBill provided a basic highlighting syntax for KDE's kate. Subsequently I added features and expanded it to completely cover the UAL syntax.
It's available here. Place it in $(kde4-config --prefix)/share/apps/katepart/syntax. You should now be able to select "Assembler ARM" from the Tools->Highlighting->assembler menu.