;  ###----------------------------------------------------------------###
;  # file	: exc015.u						#
;  # date	: Mar 26 1996						#
;  # descr.	: functional test for mips				#
;  ###----------------------------------------------------------------###

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

data		.equ	0x7FFFFFFF; a big positive data
imd_data	.equ	0x6234

		.org	0x00400000
		.start	init

init:
		loadi	r10, data		; big positive data in r10
		loadi	r11, data		; same data in r11

	;  ###--------------------------------------------------------###
	;  #   addition generating an overflow				#
	;  ###--------------------------------------------------------###

		addi	r10, r10, imd_data	; EXCEPTION (overflow)

	;  ###--------------------------------------------------------###
	;  #   after returning from exception check that r10 has not	#
	;  # been altered						#
	;  ###--------------------------------------------------------###

back_from_exception:
	        beq	r10, r11, good
		nop
		j	bad
		nop

		.org	0x004000d0
good:		j	good
		nop
bad:		j	bad
		nop
		.end