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; ###----------------------------------------------------------------###
; # file : exc003.u #
; # date : Mar 26 1996 #
; # descr. : functional test for mips #
; ###----------------------------------------------------------------###
; ###--------------------------------------------------------###
; # exceptions : #
; # - overflow (when subtracting from a positive number) #
; ###--------------------------------------------------------###
data .equ 0x52d4aec6 ; a big positive data
.org 0x00400000
.start init
init:
loadi r31, back_from_exception
loadi r10, data ; big positive data in r10
loadi r11, data ; same data in r11
; ###--------------------------------------------------------###
; # substract generating an overflow #
; ###--------------------------------------------------------###
sub r12, r0 , r10
sub r10, r12, r10 ; EXCEPTION (overflow)
; ###--------------------------------------------------------###
; # after returning from exception check that r10 has not #
; # been altered #
; ###--------------------------------------------------------###
back_from_exception:
bne r10, r11,bad
nop
j good
nop
.org 0x004000D0
good: j good
nop
bad: j bad
nop
.end
|
