nsdiv.cgs

来自「gdb-6.8 Linux下的调试程序 最新版本」· CGS 代码 · 共 65 行

# frv testcase for nsdiv $GRi,$GRj,$GRk
# mach: fr500 fr550 frv

	.include "testutils.inc"

	start

	.global nsdiv
nsdiv:
	set_spr_immed	0,gner0
	set_spr_immed	0,gner1

	; simple division 12 / 3
	set_gr_immed   	3,gr3
	set_gr_immed   	12,gr1
	nsdiv      	gr1,gr3,gr2
	test_gr_immed  	4,gr2
	test_spr_immed	0,gner0
	test_spr_immed	0,gner1

	; Random example
	set_gr_limmed  	0x0123,0x4567,gr3
	set_gr_limmed  	0xfedc,0xba98,gr1
	nsdiv      	gr1,gr3,gr2
	test_gr_immed  	-1,gr2
	test_spr_immed	0,gner0
	test_spr_immed	0,gner1

	; Special case from the Arch Spec Vol 2
	or_spr_immed	0x20,isr	; turn on isr.edem
	set_gr_immed  	-1,gr3
	set_gr_limmed  	0x8000,0x0000,gr1
	set_spr_immed	4,gner1		; turn on NE bit for gr2
	nsdiv      	gr1,gr3,gr2	; overflow is masked
	test_gr_limmed 	0x7fff,0xffff,gr2
	test_spr_bits	0x4,2,1,isr	; isr.aexc is set
	test_spr_immed	0,gner0
	test_spr_immed	0,gner1

	nsdiv      	gr1,gr0,gr32	; divide by zero
	test_spr_immed	1,gner0
	test_spr_immed	0,gner1

	and_spr_immed	-33,isr		; turn off isr.edem
	set_gr_immed  	-1,gr3
	set_gr_limmed  	0x8000,0x0000,gr1
	nsdiv      	gr1,gr3,gr2
	test_gr_limmed 	0x8000,0x0000,gr2
	test_spr_immed	1,gner0
	test_spr_immed	4,gner1

	nsdiv      	gr1,gr0,gr10	; divide by zero
	test_spr_immed	1,gner0
	test_spr_immed	0x00000404,gner1

	; simple division 12 / 3 -- should turn off ne flag
	set_gr_immed   	3,gr3
	set_gr_immed   	12,gr1
	nsdiv      	gr1,gr3,gr2
	test_gr_immed  	4,gr2
	test_spr_immed	1,gner0
	test_spr_immed	0x00000400,gner1

	pass