switchExample:
;this implementation assumes that all destinations end in jr ra, so you'll need to arrive here with JAL switchExample.
;$t0 = index (must be a multiple of 4 or the program counter will jump to a location that's not guaranteed to properly return.)
la cases,$t1
addiu $t1,$t0 ;MIPS can't do variable indexed offsetting so we have to add the offset ourselves.
lw $t8,($t1)  ;dereference the pointer, $t8 contains the address we wish to "call"
nop
jr $t8       ;jump to the selected destination.
nop

cases:
.word foo
.word bar
.word baz

foo:
;code goes here
jr ra

bar:
;code goes here
jr ra

baz:
;code goes here
jr ra