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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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Organization: Sun-Spots
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X-Sun-Spots-Digest: Volume 9, Issue 21, message 9 of 13

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