From: Kevin Buettner <kevinb@redhat.com>
To: "J. Johnston" <jjohnstn@redhat.com>, gdb-patches@sources.redhat.com
Cc: Kevin Buettner <kevinb@redhat.com>
Subject: Re: [RFA]: fix ia64 long double support
Date: Fri, 05 Dec 2003 01:19:00 -0000 [thread overview]
Message-ID: <1031205011907.ZM8602@localhost.localdomain> (raw)
In-Reply-To: "J. Johnston" <jjohnstn@redhat.com> "[RFA]: fix ia64 long double support" (Dec 4, 5:37pm)
On Dec 4, 5:37pm, J. Johnston wrote:
> Fix to a couple of problems. First of all, we aren't setting up a long double
> format for the architecture so it defaults to double when you try and print a
> long double value via gdb.
>
> Although the ia64 has a special long double format it specifies,
> this format is only valid for register values. Values in memory use
> the x86 extended float format which is 80 bits. Register long
> doubles are 82 bits (2 more bits of exponent).
So what happens when we try to print a long double in a register?
> Anyway, this simple change fixes it so long doubles print correctly.
>
> Ok to commit?
Sure. I'm guessing that we still won't always print long doubles correctly,
but it looks like this gets us closer...
Kevin
next prev parent reply other threads:[~2003-12-05 1:19 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-04 22:37 J. Johnston
2003-12-05 0:50 ` Richard Henderson
2003-12-05 1:54 ` J. Johnston
2003-12-05 5:18 ` Kevin Buettner
2003-12-06 0:18 ` J. Johnston
2003-12-05 1:19 ` Kevin Buettner [this message]
2003-12-05 1:52 ` J. Johnston
2003-12-05 5:13 ` Kevin Buettner
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