We are having problems with data alignment of 64bit types within structures. From the Mach-O docs, it appears that MacOSX code defaults to the Power model which does not align 64bit values on a 64bit boundary, however other platforms we are communicating with do and so our structures do not match. Most Darwin structure appear not to use 64bit values, size_t is 32bits for example. So is there any problem with compiling our kext with align=natural and interacting with kernel structures? A compiler option is obviously easier than #pragma align=natural around our OTW structures, or adding padding where needed. We tried to use __attribute__((aligned(8))) without much success, ie it made no difference. Is this expected to work (it was used on the same code for an intel based Linux with successs)? And what about in 10.3 with more 64bit support? I'm assuming that we will start to see more 64bit types in the kernel, are there any plans regarding alignment? Thanks, David --- David Chatterton Phone: +61 3 8530 7777 Adacel Technologies Fax: +61 3 9596 2960 david.chatterton@adacel.com www.adacel.com/global _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.