div0s.cgs

来自「lwip在ucos上的移植」· CGS 代码 · 共 65 行

# fr30 testcase for div0s $Ri
# mach(): fr30

	.include "testutils.inc"

	START

	.text
	.global div0s
div0s:
	; Test div0s $Rj,$Ri
	; example from the manual - negative dividend
	mvi_h_gr   	0x0fffffff,r2
	mvi_h_dr   	0x00000000,mdh
	mvi_h_dr   	0xfffffff0,mdl
	set_dbits	0x0		; Set opposite of expected
	set_cc          0x0f		; Condition codes should not change
	div0s      	r2
	test_cc		1 1 1 1
	test_h_gr  	0x0fffffff,r2
	test_h_dr  	0xffffffff,mdh
	test_h_dr  	0xfffffff0,mdl
	test_dbits	0x3

	; negative divisor
	mvi_h_gr   	0xffffffff,r2
	mvi_h_dr   	0xffffffff,mdh
	mvi_h_dr   	0x7fffffff,mdl
	set_dbits	0x1		; Set opposite of expected
	set_cc          0x0f		; Condition codes should not change
	div0s      	r2
	test_cc		1 1 1 1
	test_h_gr  	0xffffffff,r2
	test_h_dr  	0x00000000,mdh
	test_h_dr  	0x7fffffff,mdl
	test_dbits	0x2

	; Both sign bits 0
	mvi_h_gr   	0x0fffffff,r2
	mvi_h_dr   	0xffffffff,mdh
	mvi_h_dr   	0x7ffffff0,mdl
	set_dbits	0x3		; Set opposite of expected
	set_cc          0x0f		; Condition codes should not change
	div0s      	r2
	test_cc		1 1 1 1
	test_h_gr  	0x0fffffff,r2
	test_h_dr  	0x00000000,mdh
	test_h_dr  	0x7ffffff0,mdl
	test_dbits	0x0

	; Both sign bits 1
	mvi_h_gr   	0xffffffff,r2
	mvi_h_dr   	0x00000000,mdh
	mvi_h_dr   	0xffffffff,mdl
	set_dbits	0x2		; Set opposite of expected
	set_cc          0x0f		; Condition codes should not change
	div0s      	r2
	test_cc		1 1 1 1
	test_h_gr  	0xffffffff,r2
	test_h_dr  	0xffffffff,mdh
	test_h_dr  	0xffffffff,mdl
	test_dbits	0x1

	pass