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From: fnf@unisoft.UUCP (Fred Fish)
Newsgroups: net.lang.c
Subject: Re: AT&T 7300 C compiler/ variable name lengths (general)
Message-ID: <447@unisoft.UUCP>
Date: Sun, 21-Apr-85 18:30:52 EST
Article-I.D.: unisoft.447
Posted: Sun Apr 21 18:30:52 1985
Date-Received: Wed, 24-Apr-85 03:04:53 EST
References: <9726@brl-tgr.ARPA> <585@ahuta.UUCP> <1252@eagle.UUCP> <1113@cmcl2.UUCP>
Reply-To: fnf@unisoft.UUCP (I am the great and Oz)
Organization: UniSoft Systems, Berkeley
Lines: 13
Summary: 


> "d0", and so forth.  The SV/68 compiler has a nice way of dealing with
> this; '_' is not prepended to externals, but internal identifiers
> that should be hidden have a '%' in their names, making clashes with
> C identifiers impossible.  The register names recognized by the assembler
> have '%'s in them.

Yes, the assembler uses "%a0", sdb prints it as "a0", and sdb expects
input from the user to be "a0%"  (as in a0%!45 to set a0 to 45).
Of course "splimit%!45", to set global variable "splimit%" to 45 gives
"Unknown register variable".  Nice and consistent!  :-)

-Fred