gedit syntax highlighting for assembler files (*.asm)

Question

By default, gedit doesn\'t syntax highlight .asm files.

How can I add this support for this language?

Answer 1

Apparently the language definition provided on the extra language definitions page is not working with gtksourceview-4.0
I changed the file a bit and it works for me. The updated version can be found here.
Also here is a version for the 8086 (I have limited knowledge when it comes to XML and gtksourceview, feedback is welcomed)