From: Matthew Wilcox <matthew@wil.cx>
To: Richard Hirst <rhirst@linuxcare.com>
Cc: parisc-linux@thepuffingroup.com
Subject: Re: [parisc-linux] parisc64 kernel and ret1 (gr29) setup
Date: Thu, 21 Dec 2000 20:57:23 +0000 [thread overview]
Message-ID: <20001221205723.A21472@parcelfarce.linux.theplanet.co.uk> (raw)
In-Reply-To: <20001221160006.W2554@linuxcare.com>; from rhirst@linuxcare.com on Thu, Dec 21, 2000 at 04:00:06PM +0000
On Thu, Dec 21, 2000 at 04:00:06PM +0000, Richard Hirst wrote:
> At the moment we set up sp with "ldo TASK_SZ_ALGN+64(%r1),%r30" on syscall
> entry. For 64 bit presumably we should do something like:
>
> ldo TASK_SZ_ALGN+80(%r1),%r30
> ldo -16(%r30),%r29
>
> Which gives 64 bytes for parameter saves, plus 16 bytes for rp+sp, and
> initialises ret1.
>
> Does that sound right?
does the 64-bit ABI relax the requirement for the stack to be 64-byte aligned?
if not, it should be ldo TASK_SZ_ALIGN+128(%r1), %r30
--
Revolutions do not require corporate support.
next prev parent reply other threads:[~2000-12-21 20:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-12-21 16:00 [parisc-linux] parisc64 kernel and ret1 (gr29) setup Richard Hirst
2000-12-21 20:57 ` Matthew Wilcox [this message]
2000-12-21 20:55 ` Richard Hirst
2001-01-23 13:45 ` Richard Hirst
2001-01-23 14:20 ` Alan Modra
2001-01-23 14:30 ` Matthew Wilcox
2001-01-23 15:43 ` Richard Hirst
2001-02-07 11:18 ` Richard Hirst
2001-02-11 12:09 ` Alan Modra
2001-02-11 23:03 ` Richard Hirst
-- strict thread matches above, loose matches on Subject: below --
2001-01-23 18:47 Cary Coutant
2001-01-23 21:17 ` Jeffrey A Law
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