Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!sumax!ole!steven!cac
From: cac@steven.COM (cac)
Newsgroups: comp.arch
Subject: Re: Self-modifying code
Summary: exec instructions
Message-ID: <105@steven.COM>
Date: 12 Oct 89 00:52:55 GMT
References: <6481@pt.cs.cmu.edu> <9175@etana.tut.fi>
Organization: Sierra Geophysics Inc., Kirkland, Wa.
Lines: 21

In article <9175@etana.tut.fi>, pl@etana.tut.fi (Lehtinen Pertti) writes:
+ 	I've been lately wondering if there is any architecture
+ 	with possibility to execute instruction indirectly.
+ 	I think this would provide a way to create 'self-modifying'
+ 	code without crashing into cache problems.
+ 	I mean something like:
+ 		exec r0	; execute instructio in register r0
+ 	or
+ 		exec (r0)	; execute instruction pointed by r0
+ 	Does anyone know?

  The PDP-15 did, as I recall, and I think the PDP-10 did as well, altho
I never did assembly on the 10.

> Pertti Lehtinen				! purely offending and in subject

-- 
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