Re: 'conservative' GC == 'risky' GC

boehm@parc.xerox.com (Hans Boehm)
Mon, 13 Jun 1994 18:49:07 GMT

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Related articles
[7 earlier articles]
Re: 'conservative' GC == 'risky' GC boehm@parc.xerox.com (1994-05-27)
Re: 'conservative' GC == 'risky' GC chase@Think.COM (1994-05-26)
Re: 'conservative' GC == 'risky' GC hbaker@netcom.com (1994-05-31)
Re: 'conservative' GC == 'risky' GC hbaker@netcom.com (1994-05-30)
Re: 'conservative' GC == 'risky' GC boehm@parc.xerox.com (1994-05-31)
Re: 'conservative' GC == 'risky' GC ok@cs.rmit.oz.au (1994-06-07)
Re: 'conservative' GC == 'risky' GC boehm@parc.xerox.com (1994-06-13)
| List of all articles for this month |
Newsgroups: comp.compilers
From: boehm@parc.xerox.com (Hans Boehm)
Keywords: GC
Organization: Xerox Palo Alto Research Center
References: 94-05-084 94-06-061
Date: Mon, 13 Jun 1994 18:49:07 GMT

ok@cs.rmit.oz.au (Richard A. O'Keefe) writes:
>[sp must be valid at all times.]
>If there are other restrictions on the use of SPARC registers,
>please tell me what they are.


The other restriction is that o and l register values are indeterminate
after a save instruction. A restore followed by a save does not get your
old register values back, since the kermel (or some other process) may
have scribbled over them in the meantime.


Hans-J. Boehm
(boehm@parc.xerox.com)
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