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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Tue, 10 May 2016 19:24:28 +0200
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Subject: Re: [Qemu-devel] [PATCH v6] Add optionrom compatible with fw_cfg
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To: "Richard W.M. Jones" <rjones@redhat.com>, Stefan Hajnoczi <stefanha@gmail.com>
Cc: qemu-devel <qemu-devel@nongnu.org>, =?UTF-8?Q?Marc_Mar=c3=ad?= <marc.mari.barcelo@gmail.com>, Eduardo Habkost <ehabkost@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Gerd Hoffmann <kraxel@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Laszlo Ersek <lersek@redhat.com>, Richard Henderson <rth@twiddle.net>



On 09/05/2016 18:48, Richard W.M. Jones wrote:
> 
> Of course we're well outside any standards here.  Can we tell clang
> users to use the GCC/pre-compiled option ROMs :-?  Any other ideas?  I
> don't think I've missed a flag (GCC has -fno-toplevel-reorder, but
> clang 3.8 doesn't ...)

I guess the checksumming script (scripts/signrom.py) could take care of
padding the file to a multiple of 512 bytes, and fill in the size in the
third byte.  Then "_end" would not be necessary anymore and -m16 could
replace the .code16 directive.

Paolo