;  ###----------------------------------------------------------------###
;  # file	: exc004.u						#
;  # date	: Mar 26 1996						#
;  # descr.	: functional test for mips				#
;  ###----------------------------------------------------------------###

	;  ###--------------------------------------------------------###
	;  #   exceptions :						#
	;  #     - overflow (when adding negative numbers)		#
	;  ###--------------------------------------------------------###

data		.equ	0xb2305ec0		; a big negative 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

	;  ###--------------------------------------------------------###
	;  #   addtion generating an overflow				#
	;  ###--------------------------------------------------------###

		add	r10, r10, 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