From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <2b34921287722b84f7f694b134d326e3@proxima.alt.za>
To: 9fans@9fans.net
Date: Sun, 15 Nov 2009 19:55:36 +0200
From: lucio@proxima.alt.za
In-Reply-To: <4AFDB66F.80505@gmx.de>
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Subject: Re: [9fans] MIPS LSB compiler
Topicbox-Message-UUID: 9bfea49c-ead5-11e9-9d60-3106f5b1d025

> correct me if i am wrong. but isn't the usual MIPS calling convention to
> store the return pc in R31?
>
Almost certainly.

> you may just want to look at your compiler output. mips has various
> "branch and link" commands that do a branch and put the returning pc
> into R31, which is the usual calling convention.

As I mentioned, the function isn't even used, so its exact
implementation doesn't matter.  What matters is knowing that the
implementation is accurate and my problem is that I don't even know
whether the 64-bit version should be different from the 32-bit
version, I don't understand what differentiates the two alternatives
within the toolchain: how does one choose which version should be
used.  Or, if you feel brave, show me what I should submit to Russ for
release.  I will happily provide you with a set of patches that works
perfectly happily on my gNewSense, MIPS-64 notebook.

++L