From: Daniel Jacobowitz <drow@false.org>
To: Kevin Buettner <kevinb@redhat.com>
Cc: Jim Blandy <jimb@redhat.com>, gdb-patches@sources.redhat.com
Subject: Re: RFA: correct size of long double on PPC Linux
Date: Fri, 26 Mar 2004 15:19:00 -0000 [thread overview]
Message-ID: <20040326151957.GA15739@nevyn.them.org> (raw)
In-Reply-To: <20040325222358.1e0ccbe8@saguaro>
On Thu, Mar 25, 2004 at 10:23:58PM -0700, Kevin Buettner wrote:
> On 24 Mar 2004 13:10:33 -0500
> Jim Blandy <jimb@redhat.com> wrote:
>
> > 2004-03-24 Jim Blandy <jimb@redhat.com>
> >
> > * ppc-linux-tdep.c (ppc_linux_init_abi): Long doubles are eight
> > bytes long on PPC Linux.
>
> Can you provide the ABI reference for this?
>
> According to the documentation that I have (which is the System V ABI
> PowerPC Processor Supplement), the size of a long double is 16 bytes.
Yes - this is one of the known warts in the PPC GNU/Linux ABI. People
have been talking for years about fixing it to match the SysV ABI. GCC
only recently got 128-bit long double support on PPC, so it may be
changing soon; but for all existing PPC GNU/Linux systems I know of,
eight bytes is correct.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
next prev parent reply other threads:[~2004-03-26 15:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-24 18:10 Jim Blandy
2004-03-26 14:12 ` Kevin Buettner
2004-03-26 15:19 ` Daniel Jacobowitz [this message]
2004-03-26 15:45 ` Jim Blandy
2004-03-26 16:23 ` Kevin Buettner
2004-03-26 21:05 ` Jim Blandy
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