From: Alan Hourihane <alanh@fairlite.co.uk>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Michael Schmitz <schmitzmic@googlemail.com>,
Linux/m68k <linux-m68k@vger.kernel.org>,
Geert Uytterhoeven <geert@linux-m68k.org>
Subject: Re: Atari TT (next)
Date: Mon, 09 Jan 2012 11:22:49 +0000 [thread overview]
Message-ID: <4F0ACE09.7030406@fairlite.co.uk> (raw)
In-Reply-To: <m2wr91yxa4.fsf@igel.home>
On 09/01/12 10:40, Andreas Schwab wrote:
> Alan Hourihane <alanh@fairlite.co.uk> writes:
>
>> *** FORMAT ERROR *** FORMAT=0
>> Current process id is 768
>> BAD KERNEL TRAP: 00000000
>> Modules linked in:
>> PC: [<000029de>] flush_thread+0x8/0xe
> void flush_thread(void)
> {
> unsigned long zero = 0;
>
> current->thread.fs = __USER_DS;
> if (!FPU_IS_EMU)
> asm volatile (".chip 68k/68881\n\t"
> "frestore %0@\n\t"
> ".chip 68k" : : "a" (&zero));
> }
>
> GCC is optimizing away the initialisation of zero, since nothing visible
> is using its value.
Great spot!
Seems this also needs massaging into process_no.c too.
But am I at a shell prompt :-)
Alan.
next prev parent reply other threads:[~2012-01-09 11:22 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-07 1:27 Atari TT (next) Alan Hourihane
2012-01-07 6:47 ` Michael Schmitz
2012-01-07 16:59 ` Alan Hourihane
2012-01-08 0:46 ` Alan Hourihane
2012-01-08 4:13 ` Michael Schmitz
2012-01-08 9:35 ` Andreas Schwab
2012-01-08 9:42 ` Alan Hourihane
2012-01-08 23:51 ` Michael Schmitz
2012-01-08 23:59 ` Alan Hourihane
2012-01-09 0:05 ` Michael Schmitz
2012-01-09 0:14 ` Alan Hourihane
2012-01-09 0:23 ` Andreas Schwab
2012-01-09 3:17 ` Michael Schmitz
2012-01-09 1:03 ` Alan Hourihane
2012-01-09 1:25 ` Alan Hourihane
2012-01-09 10:40 ` Andreas Schwab
2012-01-09 11:22 ` Alan Hourihane [this message]
2012-01-09 12:14 ` Geert Uytterhoeven
2012-01-09 12:40 ` Tuomas Vainikka
2012-01-09 14:10 ` [PATCH] m68k: fix assembler constraint to prevent overeager gcc optimisation Andreas Schwab
2012-01-22 10:15 ` Geert Uytterhoeven
2012-01-22 10:53 ` Geert Uytterhoeven
2012-01-22 12:42 ` Andreas Schwab
2012-01-09 3:16 ` Atari TT (next) Michael Schmitz
2012-01-27 17:01 ` Thorsten Glaser
2012-01-28 20:33 ` Michael Schmitz
2012-01-29 0:57 ` Thorsten Glaser
2012-01-29 9:42 ` Geert Uytterhoeven
2012-01-29 19:55 ` Thorsten Glaser
2012-01-29 21:56 ` Geert Uytterhoeven
2012-01-08 10:20 ` Geert Uytterhoeven
2012-01-08 19:21 ` Michael Schmitz
2012-01-08 19:53 ` Geert Uytterhoeven
2012-01-08 23:42 ` Michael Schmitz
2012-01-08 22:05 ` Andreas Schwab
2012-01-08 23:39 ` Michael Schmitz
2012-01-08 23:49 ` Alan Hourihane
2012-01-08 23:58 ` Michael Schmitz
2012-01-08 13:36 ` Andreas Schwab
2012-01-08 14:42 ` Alan Hourihane
2012-01-08 19:24 ` Michael Schmitz
2012-01-08 17:45 ` Geert Uytterhoeven
2012-01-08 19:50 ` Alan Hourihane
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