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From: bzs@BU-CS.BU.EDU
Newsgroups: comp.unix.wizards
Subject: Does the dbx debugger work?
Message-ID: <3647@brl-adm.ARPA>
Date: Sun, 25-Jan-87 23:49:57 EST
Article-I.D.: brl-adm.3647
Posted: Sun Jan 25 23:49:57 1987
Date-Received: Tue, 27-Jan-87 01:36:48 EST
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>Basically, dbx needs better control over processes than is provided
>by present kernels.
>-- 
>In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7690)

Or hardware support. It might be useful for new hardware designers to
glance at the IBM370's PER (Program Event Recording) facilities.  It
supports traps on events like stores, fetches (in address ranges),
register changes and branches via loading of control registers. Such
facilities should be more far-reaching than just dbx and kernel support
should be fairly straightforward (control register state loaded from
the proc struct at context switch time etc.)

	-Barry Shein, Boston University