[net.unix] Last Routine FP Detection?

jason@hp-pcd.UUCP (Jason Su) (12/13/83)

#N:hp-pcd:34300001:000:304
hp-pcd!jason    Dec 12 16:38:00 1983


	OS: BSD 4.1
	Hardware: Vax 11/750

	How can one detect the last routine stackframe? 

	The saved FP (frameptr) of the last stackframe seems to be 
	pointing into an arbitrary stack location.  It is not zero.  
	It does not point to a valid routine stackframe.

	Thanks.
			-Jay
			!hplabs!hp-pcd!jason