Date: Sun, 15 Aug 2010 15:34:37 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: john@thinlinx.com Cc: freebsd-arm@FreeBSD.org Subject: Re: FreeBSD EABI ARM & Network boot image howto? Message-ID: <20100815.153437.722022410199781366.imp@bsdimp.com> In-Reply-To: <1281907405.27697.19.camel@xeon.thinmesh.com> References: <20100815.085312.690091871549704621.imp@bsdimp.com> <20100816081533.30ff461f@fubar.geek.nz> <1281907405.27697.19.camel@xeon.thinmesh.com>
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In message: <1281907405.27697.19.camel@xeon.thinmesh.com>
John Nicholls <john@thinlinx.com> writes:
: On Mon, 2010-08-16 at 08:15 +1200, Andrew Turner wrote:
: > On Sun, 15 Aug 2010 08:53:12 -0600 (MDT)
: > "M. Warner Losh" <imp@bsdimp.com> wrote:
: >
: > > In message: <1281869630.24339.63.camel@xeon.thinmesh.com>
: > > John Nicholls <john@thinlinx.com> writes:
: > > : Special thanks to Yohanes Nugroho & Greg Ansley for the fantastic
: > > work : they have done with the FreeBSD port to the AT91SAM9G20. Great
: > > to see : FreeBSD gaining more traction in the embedded World :)
: > > :
: > > : I have a couple of questions,
: > > :
: > > : (1) I noticed a significant performance boost under Linux when
: > > Linux ARM : moved to EABI, are there any plans for a EABI FreeBSD
: > > version? :
: > > : http://wiki.debian.org/ArmEabiPort
: > >
: > > People have talked about it, but so far nothing concrete has been
: > > done, to my knowledge.
: >
: > I had a look at this over the weekend. I managed to get a userland
: > compiled with the current abi into single user mode on a kernel
: > compiled with -mabi=aapcs-linux (gnueabi). The main problem I found
: > was the change in packing for structs causing strange behaviour in
: > userland.
: >
: > My plan is to clean up the code and post it somewhere for further
: > testing.
:
: That's great news Andrew!
:
: Debian Linux have dropped support for the old ARM and moved to ARMEL, I
: hope FreeBSD moves in this direction also...
There was talk about NetBSD making this move too, but I don't know
what became of it.
I'm guessing it won't be a huge deal to make this work, just a bunch
of elbow grease in the syscalls...
Warner
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