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From: grunwald@foobar.colorado.edu (Dirk Grunwald)
Newsgroups: comp.sys.mips,comp.sys.dec
Subject: Re: ANSI-C style variadic functions on MIPS
Message-ID: <15370@boulder.Colorado.EDU>
Date: 5 Jan 90 17:53:44 GMT
References: <1990Jan5.085205.12473@athena.mit.edu>
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In-reply-to: raeburn@athena.mit.edu's message of 5 Jan 90 08:52:05 GMT


You might want to check the documentation for the Gnu C compiler; it
documents a little state machine that implements the MIPS convention.
Also, check stdarg.h & the version of varargs for the mips (va-mips.h).

recall that the mips calling convention always allocates 4 words on
the frame. In general, if you're going to pass varidic args to
something like printf, the ``varargs'' package flushs the registers to
memory. I think this also happens if you take the address of an
argument.