From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@cse.psu.edu
Subject: Re: [9fans] partial-Plan9ification question
From: forsyth@caldo.demon.co.uk
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Date: Fri, 13 Jul 2001 06:53:36 +0100
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>>Speaking of that, what's the calling convention of 8c? Gcc is, I think
>>caller saves, args are pushed last to first, return value in eax on x86.

the plan 9 compilers are strictly caller-saves, for all architectures.  other details vary.
on some platforms, a few useful constants are reserved in floating-point registers.

gcc varies between architectures, and even from platform to platform,
but i think even on the x86 with hardly any registers, some registers are callee-saved.