Jakub Jelinek (jakub@xxxxxxxxxx) said: > On Mon, Jan 24, 2011 at 09:25:45AM -0800, John Reiser wrote: > > Actually many of them should be using the new x86_32 software architecture, > > which is the 64-bit instruction set (thus 16 "general" registers, SSE, ...) > > but with integers, longs, and pointers all 32 bits. The upper 32 bits > > of any user address are 0, and not stored in RAM (except the return address > > of CALL.) This gives a measurable benefit on boxes with low RAM. > > Except that such a model is only barely supported in binutils, the support > for it in gcc is pre-alpha state on a branch and there is no kernel nor > glibc support. Am I missing something, or would this also be binary-incompatible? If so, that's very very very much not worth the effort. Bill -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
