lsr.cgs

来自「lwip在ucos上的移植」· CGS 代码 · 共 66 行

# fr30 testcase for lsr $Rj,$Ri, lsr $u4,$Rj
# mach(): fr30

	.include "testutils.inc"

	START

	.text
	.global lsr
lsr:
	; Test lsr $Rj,$Ri
	mvi_h_gr   	0xdeadbee0,r7	; Shift by 0
	mvi_h_gr   	0x80000000,r8
	set_cc          0x05		; Set mask opposite of expected
	lsr      	r7,r8
	test_cc		1 0 0 0
	test_h_gr  	0x80000000,r8

	mvi_h_gr   	0xdeadbee1,r7	; Shift by 1
	mvi_h_gr   	0x80000000,r8
	set_cc          0x0f		; Set mask opposite of expected
	lsr      	r7,r8
	test_cc		0 0 1 0
	test_h_gr  	0x40000000,r8

	mvi_h_gr   	0xdeadbeff,r7	; Shift by 31
	mvi_h_gr   	0x80000000,r8
	set_cc          0x0f		; Set mask opposite of expected
	lsr      	r7,r8
	test_cc		0 0 1 0
	test_h_gr  	1,r8

	mvi_h_gr   	0xdeadbeff,r7	; clear register
	mvi_h_gr   	0x40000000,r8
	set_cc          0x0a		; Set mask opposite of expected
	lsr      	r7,r8
	test_cc		0 1 1 1
	test_h_gr  	0x00000000,r8

	; Test lsr $u4Ri
	mvi_h_gr   	0x80000000,r8
	set_cc          0x05		; Set mask opposite of expected
	lsr      	0,r8
	test_cc		1 0 0 0
	test_h_gr  	0x80000000,r8

	mvi_h_gr   	0x80000000,r8
	set_cc          0x0f		; Set mask opposite of expected
	lsr      	1,r8
	test_cc		0 0 1 0
	test_h_gr  	0x40000000,r8

	mvi_h_gr   	0x80000000,r8
	set_cc          0x0e		; Set mask opposite of expected
	lsr      	15,r8
	test_cc		0 0 1 0
	test_h_gr  	0x00010000,r8

	mvi_h_gr   	0x00004000,r8
	set_cc          0x0a		; Set mask opposite of expected
	lsr      	15,r8
	test_cc		0 1 1 1
	test_h_gr  	0x00000000,r8

	pass