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From: LaMont Jones <lamont@security.hp.com>
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?
Date: Mon, 02 Aug 1999 02:36:58 -0600	[thread overview]
Message-ID: <19990802083658.D666618708@security.hp.com> (raw)
In-Reply-To: Your message of "Mon, 02 Aug 1999 08:26:12 +0200." <19990802082612.X25925@mencheca.ch.genedata.com>

> 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

  reply	other threads:[~1999-08-02  8:36 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-08-01 19:50 [parisc-linux] HPUX syscall ABI? Matthew Wilcox
1999-08-02  3:32 ` Philipp Rumpf
1999-08-02  4:12   ` Jeffrey A Law
1999-08-02  4:21     ` Philipp Rumpf
1999-08-02  4:27       ` Jeffrey A Law
1999-08-02  6:08 ` LaMont Jones
1999-08-02  6:26   ` Matthew Wilcox
1999-08-02  8:36     ` LaMont Jones [this message]
1999-08-02 16:50     ` Jerry Huck

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