On Sun, Mar 18, 2007 at 10:29:10AM -0700, Jeremy Fitzhardinge wrote: > Andi Kleen wrote: > > You could use the dwarf2 unwind tables. They have exact information > > what register has what. But it would likely get complicated. > > Yes. And would they be accurate for hand-written asm, which is where we > have this problem? Yes. All inline assembly tells gcc what registers are clobbered and it fills in the tables. Hand clobbering in inline assembly cannot be expressed with the current toolchain, so we moved all those out of line. But again I'm not sure it will work anyways. For once you would need large padding around the calls anyways for inline replacement -- how would you generate that? I expect you would need to put the calls into asm() again and with that a custom annotiation format looks reasonable. -Andi _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
