From: Carlos O'Donell <carlos@baldric.uwo.ca>
To: John David Anglin <dave@hiauly1.hia.nrc.ca>
Cc: parisc-linux@lists.parisc-linux.org, tausq@debian.org
Subject: Re: [parisc-linux] glibc 2.3.1 - It's alive! - patches
Date: Mon, 11 Nov 2002 18:27:11 -0500 [thread overview]
Message-ID: <20021111232711.GB12433@systemhalted> (raw)
In-Reply-To: <200211112253.gABMr09l003349@hiauly1.hia.nrc.ca>
> > Again, delayed traps can be "Invalid Operation" exceptions within these
> > floating point tests. We may be seeing some of those issues. I really
> > need to find a way to properly flush delayed exceptions.
>
> Look at fldw,fstw. Specifying register 0L forces the coprocessor
> to complete all previous floating-point insns.
>
We currently use the following as a delayed exception trap barrier:
libc/glibc-2.3.1/sysdeps/hppa/fpu/fraiseexcpt.c
...
__asm__ __volatile__ ("fmpy,dbl %1,%%fr0,%0\n\t"
/* FIXME: is this a proper trap barrier? */
"fcpy,dbl %%fr0,%%fr0" : "=f" (d) : "0"(d));
...
And from the comment it seems that DHD wasn't sure either :)
I don't quite understand what is meant by specifying register 0L?
c.
next prev parent reply other threads:[~2002-11-11 23:27 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-11 1:05 [parisc-linux] glibc 2.3.1 - It's alive! - patches Carlos O'Donell
2002-11-11 1:19 ` John David Anglin
2002-11-11 17:12 ` Carlos O'Donell
2002-11-11 17:36 ` John David Anglin
2002-11-11 18:00 ` Matthew Wilcox
2002-11-11 18:20 ` Carlos O'Donell
2002-11-11 18:58 ` Carlos O'Donell
2002-11-11 20:42 ` Carlos O'Donell
2002-11-11 20:57 ` John David Anglin
2002-11-11 21:17 ` Carlos O'Donell
2002-11-11 21:33 ` John David Anglin
2002-11-12 5:31 ` [parisc-linux] simple testcase for binutils visibility problem Randolph Chung
2002-11-12 5:58 ` John David Anglin
2002-11-11 21:16 ` [parisc-linux] glibc 2.3.1 - It's alive! - patches Carlos O'Donell
2002-11-11 22:36 ` John David Anglin
2002-11-11 22:44 ` Carlos O'Donell
2002-11-11 22:53 ` John David Anglin
2002-11-11 23:27 ` Carlos O'Donell [this message]
2002-11-12 0:22 ` John David Anglin
2002-11-12 1:23 ` Carlos O'Donell
2002-11-12 4:13 ` John David Anglin
2002-11-12 15:44 ` John David Anglin
2002-11-12 17:42 ` Jim Hull
2002-11-12 17:53 ` John David Anglin
2002-11-12 18:43 ` Jim Hull
2002-11-12 19:02 ` John David Anglin
2002-11-12 19:31 ` Jim Hull
2002-11-12 19:38 ` John David Anglin
2002-11-13 19:22 ` Carlos O'Donell
2002-11-13 20:16 ` John David Anglin
2002-11-17 21:54 ` John David Anglin
2002-11-18 16:12 ` Carlos O'Donell
2002-11-18 17:42 ` John David Anglin
2002-11-18 19:30 ` Carlos O'Donell
2002-11-18 19:44 ` John David Anglin
2002-11-11 1:21 ` Matthew Wilcox
2002-11-11 1:32 ` John David Anglin
2002-11-11 1:49 ` Carlos O'Donell
2002-11-11 3:45 ` John David Anglin
2002-11-11 4:26 ` John David Anglin
2002-11-11 15:03 ` Carlos O'Donell
2002-11-11 15:47 ` John David Anglin
2002-11-11 16:26 ` Carlos O'Donell
2002-11-11 17:25 ` John David Anglin
2002-11-11 17:37 ` Carlos O'Donell
2002-11-11 17:46 ` John David Anglin
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