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Re: [PATCH, RFC] MIPS: Implement the getcontext API

To: Aurelien Jarno <aurelien@aurel32.net>
Subject: Re: [PATCH, RFC] MIPS: Implement the getcontext API
From: "Maciej W. Rozycki" <macro@codesourcery.com>
Date: Tue, 28 Apr 2009 21:19:54 +0100 (BST)
Cc: "Joseph S. Myers" <joseph@codesourcery.com>, linux-mips@linux-mips.org, libc-ports@sourceware.org
In-reply-to: <20090428191750.GZ4902@hall.aurel32.net>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <alpine.DEB.1.10.0902282326580.4064@tp.orcam.me.uk> <Pine.LNX.4.64.0904152018070.3560@digraph.polyomino.org.uk> <20090418123815.GA21240@linux-mips.org> <Pine.LNX.4.64.0904181732250.11016@digraph.polyomino.org.uk> <20090428191750.GZ4902@hall.aurel32.net>
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On Tue, 28 Apr 2009, Aurelien Jarno wrote:

> Note that this code does not compile on mips64, I get the following
> error from binutils (2.19.1):
> ../ports/sysdeps/unix/sysv/linux/mips/getcontext.S: Assembler messages:
> ../ports/sysdeps/unix/sysv/linux/mips/getcontext.S:102: Error: illegal 
> operands `s.d fs6,(30*8+296)($4)'
> ../ports/sysdeps/unix/sysv/linux/mips/getcontext.S:103: Error: illegal 
> operands `s.d fs7,(31*8+296)($4)'
> 
> The corresponding code lines are:
> 
>  98        s.d     fs2, (26 * SZREG + MCONTEXT_FPREGS)(a0)
>  99        s.d     fs3, (27 * SZREG + MCONTEXT_FPREGS)(a0)
> 100        s.d     fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
> 101        s.d     fs5, (29 * SZREG + MCONTEXT_FPREGS)(a0)
> 102        s.d     fs6, (30 * SZREG + MCONTEXT_FPREGS)(a0)
> 103        s.d     fs7, (31 * SZREG + MCONTEXT_FPREGS)(a0)

 This code was validated with all the three ABIs before submission.  Does 
your problem happen with vanilla upstream or your locally-modified 
sources?  If the latter, then please make sure you've got all the 
necessary updates applied.

  Maciej

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