From: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
To: Richard Henderson <rth@redhat.com>
Cc: Jay.Estabrook@compaq.com, linux-kernel@vger.kernel.org
Subject: Re: [alpha] cleanup opDEC workaround
Date: Tue, 20 Nov 2001 20:51:05 +0300 [thread overview]
Message-ID: <20011120205105.A15395@jurassic.park.msu.ru> (raw)
In-Reply-To: <20011119232355.C16091@redhat.com> <20011120133150.A9033@jurassic.park.msu.ru> <20011120090818.A16366@redhat.com>
In-Reply-To: <20011120090818.A16366@redhat.com>; from rth@redhat.com on Tue, Nov 20, 2001 at 09:08:18AM -0800
On Tue, Nov 20, 2001 at 09:08:18AM -0800, Richard Henderson wrote:
> Oh, it depended on this one.
Ok, but with opDEC_fix = 8 we actually skip to addt/stt, so that asm
probably should be rearranged to
"fmov $f31, $f0\n\t"
"cvttq/svm $f31, $f31\n\t"
"addt $f31, $f31, $f31\n\t"
"cmpteq $f31, $f31, $f0\n\t"
"stt $f0, %0"
Further, if fp emulation isn't compiled in, we'll have kernel mode
instruction fault. A quick fix appears to be
regs.pc += opDEC_fix;
+ if (opDEC_fix == 8)
+ return;
Did I missed something?
Ivan.
next prev parent reply other threads:[~2001-11-20 17:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-20 7:23 Richard Henderson
2001-11-20 10:31 ` Ivan Kokshaysky
2001-11-20 17:08 ` Richard Henderson
2001-11-20 17:51 ` Ivan Kokshaysky [this message]
2001-11-20 18:47 ` Richard Henderson
2001-11-21 12:15 ` Ivan Kokshaysky
2001-11-21 22:27 ` Richard Henderson
2001-11-22 10:55 ` Ivan Kokshaysky
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