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; ###----------------------------------------------------------------###
; # file : exc009.u #
; # date : Mar 26 1996 #
; # descr. : functional test for mips #
; ###----------------------------------------------------------------###
; ###--------------------------------------------------------###
; # exceptions : #
; # - illegal instruction (when executing a mfc0) #
; ###--------------------------------------------------------###
data .equ 0x324f6b71
.org 0x00400000
.start init
init:
loadi r31, back_from_exception
loadi r1 , data ; init. r2 with a data
loadi r2 , data ; init. r3 with the same value
; ###--------------------------------------------------------###
; # move SR into r1. This must generate an exception #
; # (coprocesseur inaccessible) #
; ###--------------------------------------------------------###
mfc0 r1 , status ; EXCEPTION (privileged)
nop
; ###--------------------------------------------------------###
; # check that the load has faild and the content of the #
; # register has not been altered #
; ###--------------------------------------------------------###
back_from_exception:
; check that the move has failed
beq r1 , r2 ,good ; jump to good if OK
nop
j bad
nop
.org 0x004000d0
good: j good
nop
bad: j bad
nop
.end
|
