Porting Questions

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Article #13522

#13522

From: larus
Date: Thu, 01 Feb 1990 14:56

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I am trying to port a piece of software to a Sun 4 and have two questions
that I cannot answer from the documentation.  If anyone knows the answer
(or has a reference to the documentation), could you send me a note since
I don't normally read this news group.

1.  Are any of the global registers (%g1 -- %g7) available to programs?
Or, a better question, what are these registers used for?

2.  Is there any trick to doing an unaligned load/store of a word (4 byte
quantity)?  I can do it with a sequence of load-byte/store-byte's and
shifts, but I find it hard to believe that this is really the best
technique.

Thanks,
larus@cs.wisc.edu

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!mcgill-vision!bloom-beacon!bu.edu!bu-cs!snorkelwacker!usc!brutus.cs.uiuc.edu!samsung!cs.utexas.edu!rice!sun-spots-request
From: larus@spool.cs.wisc.edu
Newsgroups: comp.sys.sun
Subject: Porting Questions
Keywords: Miscellaneous
Message-ID: <4635@brazos.Rice.edu>
Date: 1 Feb 90 14:56:43 GMT
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