break.cgs

来自「这个是LINUX下的GDB调度工具的源码」· CGS 代码 · 共 59 行

# FRV testcase for break
# mach: all

	.include "testutils.inc"

	start

	.global tra
tra:
	; Can't test break anymore in the user environment because it is the 
	; debugger's breakpoint insn. Just pass this test for now.
	pass





	set_gr_spr	tbr,gr7
	and_gr_immed	-4081,gr7		; clear tbr.tt
	inc_gr_immed	0xff0,gr7		; break handler
	set_bctrlr_0_0  gr7
	set_spr_immed	128,lcr

	test_spr_bits	0x4,2,0x1,psr		; psr.s is set
	test_spr_bits	0x1,0,0x0,psr		; psr.et is clear
	set_spr_addr	ok1,lr
	break
ret:
	or_spr_immed	0x00000001,psr		; turn on psr.et
	and_spr_immed	0xfffffffb,psr		; turn off psr.s
	test_spr_bits	0x4,2,0x0,psr		; psr.s is clear
	test_spr_bits	0x1,0,0x1,psr		; psr.et is set
	set_spr_addr	ok0,lr
	break
ret1:
	test_spr_bits	0x4,2,0x0,psr		; psr.s is clear
	test_spr_bits	0x1,0,0x1,psr		; psr.et is set
	pass

	; check interrupt for second break
ok0:	test_spr_addr	ret1,bpcsr
	test_spr_bits	0x1000,12,0x0,bpsr	; bpsr.bs is clear
	test_spr_bits	0x0001,0,0x1,bpsr	; bpsr.et is set
	test_spr_bits	0x4,2,0x1,psr		; psr.s is set
	test_spr_bits	0x1,0,0x0,psr		; psr.et is clear
	rett		0			; nop
	rett		1

	; check interrupt for first break
ok1:	test_spr_addr	ret,bpcsr
	test_spr_bits	0x1000,12,0x1,bpsr	; bpsr.bs is set
	test_spr_bits	0x0001,0,0x0,bpsr	; bpsr.et is clear
	test_spr_bits	0x4,2,0x1,psr		; psr.s is set
	test_spr_bits	0x1,0,0x0,psr		; psr.et is clear
	rett		0			; nop
	rett		1