ported read/write swi handlers
Merge branch 'master' of https://github.com/fchoo/lab4
Merge branch 'master' of https://github.com/fchoo/lab4
Merge branch 'master' of https://github.com/fchoo/lab4
Merge branch 'master' of https://github.com/fchoo/lab4
ported c_swi_handler and swi_handler.S
renamed irq wrapper to handler
modified files so make compiles w/o error