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To: Matthew Wilcox <Matthew.Wilcox@genedata.com>
Cc: LaMont Jones <lamont@security.hp.com>, parisc-linux@thepuffingroup.com
Subject: Re: [parisc-linux] HPUX syscall ABI? 
In-reply-to: Your message of "Mon, 02 Aug 1999 08:26:12 +0200."
             <19990802082612.X25925@mencheca.ch.genedata.com>
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Date: Mon, 02 Aug 1999 02:36:58 -0600
From: LaMont Jones <lamont@security.hp.com>
Message-Id: <19990802083658.D666618708@security.hp.com>
List-ID: <linux-parisc.vger.kernel.org>

> Yep, that's exactly what I need.  Urgh, so I have to grab the arguments
> off the user-mode stack before switching to the kernel-mode stack..
> 
> What's the greatest number of parameters to an HPUX syscall?
> Linux's mmap() has six parameters (and you should see the kludges some
> architectures go through to support that.  We're cleaner).

The routine _syscall(), which calls an aribitrary system call for you,
takes 9 arguments:  the system call number followed by 8 args.  While
that's not a complete guarantee, you'ld be in good company if you supported
up to 8 args...

lamont