rett.cgs

这个是LINUX下的GDB调度工具的源码

# frv testcase for rett $debug
# mach: all

	.include "testutils.inc"

	start

	.global rett
rett:
	and_spr_immed	-4081,tbr		; clear tbr.tt
	set_gr_spr	tbr,gr7
	inc_gr_immed	2112,gr7		; address of exception handler
	set_bctrlr_0_0  gr7

	set_spr_immed	128,lcr
	set_gr_immed	0,gr7

	set_psr_et	1
	set_spr_addr	ok1,lr
	set_icc		0x0 0
	tira 		gr7,4		; should branch to tbr + (128 + 4)*16
ok0:
	test_gr_immed  	1,gr7
	pass
	fail
ok1:
	inc_gr_immed	1,gr7
	rett 		1		; should be a nop
	rett 		0
	fail