From: Ralf Baechle <ralf@linux-mips.org>
To: David Daney <ddaney@caviumnetworks.com>,
linux-mips <linux-mips@linux-mips.org>, GCC <gcc@gcc.gnu.org>,
binutils <binutils@sourceware.org>,
Prasun Kapoor <prasun.kapoor@caviumnetworks.com>,
rdsandiford@googlemail.com
Subject: Re: RFC: A new MIPS64 ABI
Date: Mon, 9 May 2011 15:28:28 +0100 [thread overview]
Message-ID: <20110509142828.GA7196@linux-mips.org> (raw)
In-Reply-To: <87hbbxqihm.fsf@firetop.home>
On Mon, Feb 21, 2011 at 07:45:41PM +0000, Richard Sandiford wrote:
> David Daney <ddaney@caviumnetworks.com> writes:
> > Background:
> >
> > Current MIPS 32-bit ABIs (both o32 and n32) are restricted to 2GB of
> > user virtual memory space. This is due the way MIPS32 memory space is
> > segmented. Only the range from 0..2^31-1 is available. Pointer
> > values are always sign extended.
> >
> > Because there are not already enough MIPS ABIs, I present the ...
> >
> > Proposal: A new ABI to support 4GB of address space with 32-bit
> > pointers.
>
> FWIW, I'd be happy to see this go into GCC.
So am I for the kernel primarily because it's not really a new ABI but
an enhancement of the existing N32 ABI.
Ralf
next prev parent reply other threads:[~2011-05-09 14:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4D5990A4.2050308__41923.1521235362$1297715435$gmane$org@caviumnetworks.com>
2011-02-21 19:45 ` RFC: A new MIPS64 ABI Richard Sandiford
2011-05-09 14:28 ` Ralf Baechle [this message]
2011-05-09 17:47 ` David Daney
2011-02-14 20:29 David Daney
2011-02-15 17:56 ` Alexandre Oliva
2011-02-15 18:08 ` David Daney
2011-05-06 8:29 ` Alexandre Oliva
2011-05-06 17:00 ` David Daney
2011-02-18 1:02 ` David Daney
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