Xref: utzoo comp.sys.mips:405 comp.sys.dec:2434
Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!apple!mips!gumby!lai
From: lai@mips.COM (David Lai)
Newsgroups: comp.sys.mips,comp.sys.dec
Subject: Re: ANSI-C style variadic functions on MIPS
Message-ID: <34273@mips.mips.COM>
Date: 9 Jan 90 20:07:30 GMT
References: <1990Jan5.085205.12473@athena.mit.edu> <15370@boulder.Colorado.EDU> <1990Jan6.062805.23863@athena.mit.edu> <34218@mips.mips.COM> <1990Jan8.041547.18259@athena.mit.edu>
Sender: news@mips.COM
Reply-To: lai@mips.COM (David Lai)
Followup-To: comp.sys.mips
Organization: MIPS Computer Systems, Sunnyvale, CA
Lines: 25

In article <1990Jan8.041547.18259@athena.mit.edu> raeburn@athena.mit.edu (Ken Raeburn) writes:
>In article <34218@mips.mips.COM> lai@mips.COM (David Lai) writes:
>> extern foo(double,...);
>> foo(2.0,3.0);  /* passes 2.0 in fp reg, 3.0 in regular registers */
>
>Ah, excellent.  Thank you for the confirmation.  I had thought this
>was the solution, but it doesn't match Kane's book (well, maybe if you

A new update to Kanes book is in the works.  There is also updates
to the Languages Programmers Guide to reflect stdarg style functions.

>interpret variadic-function arguments as coming under "anything else",
>regardless of type -- but that should be explicitly stated) or the
>behavior I saw from the PMAX (excuse me, DECstation) compiler.  (I did
>have my definition -- with ellipsis -- before the call; that should be
>enough.)  Could the Ultrix version be an older compiler, that didn't
>have this fixed?  Theirs is 1.31, and puts 3.0 (from the example
>above) in $f14, as does the current gcc port.  If it is outdated, I'll
>complain at them....  What's the current one supposed to be?

The latest released compiler is 2.0.  2.10 is in beta test, which has the
stdarg fully working.
-- 
        "What is a DJ if he can't scratch?"  - Uncle Jamms Army
     David Lai (lai@mips.com || {ames,prls,pyramid,decwrl}!mips!lai)