[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] RFC: 32 bits as smallest atomic size.
On 27 Mar 2005, at 11:56, Keir Fraser wrote: I don't think there are that many gcc-isms, apart from use of PACKED (please correct me if I'm wrong). You can always define that to nothing if you need to - I'd hope that no compiler adds padding since all fields should be naturally aligned. I don't see us moving to a model where we define macros on char arrays anytime soon. :-) But perhaps we could include a script to generate such macros from our structure definitions.... Actually this would get round the need to manually determine field offsets -- we could get rid of PACKED, let fields fall as they may, and then run the headers through gcc to get field offsets for those who need them. There are a very few cases where we actually really care about two fields being directly adjacent, but I could add annotations in the header files and run a script to check that the placement constraints are satisfied. Already the field offset comments are broken in a few places in unstable, so perhaps this is a better way to go. -- Keir ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel
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