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From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Kyle McMartin <kyle@mcmartin.ca>
Cc: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>,
	Mike Frysinger <vapier@gentoo.org>,
	linux-man <linux-man@vger.kernel.org>,
	Kyle McMartin <kyle@infradead.org>, Helge Deller <deller@gmx.de>,
	"James E.J. Bottomley" <jejb@parisc-linux.org>,
	linux-parisc@vger.kernel.org
Subject: Re: [PATCH] man2 : syscall.2 : document syscall calling conventions
Date: Sun, 07 Apr 2013 07:56:49 -0700	[thread overview]
Message-ID: <1365346609.1992.10.camel@dabdike> (raw)
In-Reply-To: <20130407135514.GW12938@bombadil.infradead.org>

On Sun, 2013-04-07 at 09:55 -0400, Kyle McMartin wrote:
> On Sun, Apr 07, 2013 at 12:00:50PM +0200, Michael Kerrisk (man-pages) wrote:
> > [Adding a few people to CC who may be able to help with Mike's doubts
> > on PA-RISC; folks, if any of you could have a quick look at the parisc
> > piece below, that would be helpful]
> > 
> 
> The syscall number is in %r20, everything else looks correct. The
> returned value is in %r28 and the args are %r26 through %r21.

Actually, that's not quite correct.  on 64 bits it's arg1-8 are %r26-%
r19 but on 32 the convention is that arg1-arg4 are %r26-%r23 and the
rest on stack.  We can also do register pair combining on 32 bits for a
64 bit argument.

Our register use is documented in 

Documentation/parisc/registers

James



  reply	other threads:[~2013-04-07 14:56 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-27  5:11 [PATCH] man2 : syscall.2 : add notes ch0.han-Hm3cg6mZ9cc
     [not found] ` <1364361092-5948-1-git-send-email-ch0.han-Hm3cg6mZ9cc@public.gmane.org>
2013-03-27  7:53   ` (unknown), Changhee Han
2013-03-27  8:25   ` [PATCH v2] man2 : syscall.2 : add notes Changhee Han
2013-03-28  9:37   ` [PATCH] " Michael Kerrisk (man-pages)
2013-04-01  5:33   ` Changhee Han
     [not found]     ` <1364794429-20477-1-git-send-email-ch0.han-Hm3cg6mZ9cc@public.gmane.org>
2013-04-01  6:13       ` Mike Frysinger
     [not found]         ` <201304010213.06056.vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
2013-04-01  6:22           ` Michael Kerrisk (man-pages)
     [not found]             ` <CAKgNAki_8bOsuKTJLx3iMLeSvVXHo0bZf8zSUQ08RR7+D33xgQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-01  7:19               ` Mike Frysinger
     [not found]                 ` <201304010319.45019.vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
2013-04-01  7:36                   ` Michael Kerrisk (man-pages)
     [not found]                     ` <CAKgNAkhBASGvXGfdBSjpGaMuxoJofcQvZQrX3a=uxbcKQnXOAQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-01  8:29                       ` Mike Frysinger
     [not found]                         ` <201304010429.45737.vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
2013-04-01  9:29                           ` Michael Kerrisk (man-pages)
     [not found]                             ` <CAKgNAkij3zDwakWvcRkRbknmV2Hpt4HWfH4uVqmxp+7gQek-2g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-01 10:32                               ` Mike Frysinger
     [not found]                                 ` <201304010632.41520.vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
2013-04-02  6:54                                   ` Michael Kerrisk (man-pages)
     [not found]                                     ` <CAKgNAkgG2kdCC1tyZQkYU7O_nP7RB8VoCmx6eb8FcudU1s6RgA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-02 23:17                                       ` [PATCH] man2 : syscall.2 : document syscall calling conventions Mike Frysinger
2013-04-07 10:00                                         ` Michael Kerrisk (man-pages)
2013-04-07 13:55                                           ` Kyle McMartin
2013-04-07 14:56                                             ` James Bottomley [this message]
2013-04-07 15:11                                               ` Kyle McMartin
     [not found]                                                 ` <20130407151134.GX12938-PfSpb0PWhxZc2C7mugBRk2EX/6BAtgUQ@public.gmane.org>
2013-04-07 15:38                                                   ` James Bottomley
2013-04-08  9:18                                                   ` Michael Kerrisk (man-pages)
     [not found]                                             ` <20130407135514.GW12938-PfSpb0PWhxZc2C7mugBRk2EX/6BAtgUQ@public.gmane.org>
2013-04-07 18:39                                               ` Mike Frysinger
2013-04-07 18:48                                                 ` John David Anglin
     [not found]                                                   ` <BLU0-SMTP986B123D17DB8B88214F797C40-MsuGFMq8XAE@public.gmane.org>
2013-04-08  9:20                                                     ` Michael Kerrisk (man-pages)
     [not found]                                                       ` <CAKgNAkhv6tovvnucoofDR-eOe4H7xeFZDam9+iaVVndEqbuoXg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-12  1:40                                                         ` Mike Frysinger
     [not found]                                                           ` <201304112140.18506.vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
2013-04-16  6:01                                                             ` Michael Kerrisk (man-pages)
2013-04-12  1:55                                                   ` Mike Frysinger
     [not found]                                                     ` <201304112155.46349.vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
2013-04-12  2:34                                                       ` John David Anglin
2013-04-12  3:38                                                         ` Mike Frysinger
2013-04-12  4:45                                                           ` James Bottomley
2013-04-12 12:17                                                             ` John David Anglin
2013-04-12 18:45                                                             ` Mike Frysinger
2013-04-12 19:14                                                               ` James Bottomley
2013-04-12 19:46                                                                 ` Mike Frysinger
2013-04-12 20:25                                                                   ` James Bottomley
2013-04-12 14:01                                                     ` Kyle McMartin
     [not found]                                           ` <CAKgNAkgODPSWSeA8ZymiAjFBqSAZQMtQe9GW84Y6QHdFEc9S-w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-07 18:43                                             ` Mike Frysinger
2013-04-01  8:37                   ` [PATCH] man2 : syscall.2 : add notes Mike Frysinger
     [not found]                     ` <201304010437.52901.vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
2013-04-01  9:30                       ` Michael Kerrisk (man-pages)
     [not found]                         ` <CAKgNAkit-qRPErHDzGEJ_yedA+O97bFxDsqWJMZOhCZ9DPvOtw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-01 10:09                           ` Mike Frysinger
2013-04-01  7:05           ` Fw : Re : " 한창희

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