From: Carlos O'Donell <carlos@baldric.uwo.ca>
To: John David Anglin <dave@hiauly1.hia.nrc.ca>
Cc: Bdale Garbee <bdale@gag.com>, parisc-linux@parisc-linux.org
Subject: Re: [parisc-linux] ["CSA Test Drive" <TestDrive@compaq.com>] FW: Some issues
Date: Wed, 11 Dec 2002 17:44:04 -0500 [thread overview]
Message-ID: <20021211224404.GC15219@systemhalted> (raw)
In-Reply-To: <200212112203.gBBM3BRZ021171@hiauly1.hia.nrc.ca>
> > 2) The Debian HPPA box (spe170) seems to have alpha quality
> > software. Specifically, the FCNV,UDW,DBL instruction is
> > apparently trapped, at least for certain input operand
>
> I tried the program and I confirm the incorrect result under
> hppa-linux. The same code under hpux generates the correct
> result. The problem might be the wrong rounding mode is set
> by glibc. I believe that there was a recent fix for this.
I fixed fesetround() so it wouldn't make a mess of the RM mask. Though
it does not appear that rounding is related to the problem.
> I see no indication that the code traps on a PA8700. I think
> you would get a report in kern.log if the insn trapped due to
> an unimplemented trap. You might have the floating point
> exception enables on causing traps on your machine.
The code _seems_ to trap on a PA8600. Though I won't say anything until
I enable debugging in the trap handler and rerun the test.
c.
next prev parent reply other threads:[~2002-12-11 22:44 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-11 21:13 [parisc-linux] ["CSA Test Drive" <TestDrive@compaq.com>] FW: Some issues Bdale Garbee
2002-12-11 22:03 ` John David Anglin
2002-12-11 22:44 ` Carlos O'Donell [this message]
2002-12-11 23:05 ` John David Anglin
2002-12-11 23:17 ` Carlos O'Donell
2002-12-12 6:50 ` Randolph Chung
2002-12-12 12:15 ` Matthew Wilcox
2003-01-10 7:54 ` [parisc-linux] Re: floating point exception error Randolph Chung
2003-01-10 18:08 ` Jim Hull
2003-01-10 18:35 ` Randolph Chung
2003-01-10 18:48 ` John David Anglin
2003-01-10 22:30 ` Jim Hull
2003-01-11 6:16 ` Randolph Chung
2003-01-11 7:10 ` Grant Grundler
2003-01-11 18:31 ` John David Anglin
2003-01-12 8:37 ` Randolph Chung
2003-01-13 15:58 ` jsoe0708
2003-01-13 16:57 ` Randolph Chung
2003-01-13 17:16 ` jsoe0708
2003-01-13 17:16 ` Randolph Chung
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