On Sat, Jul 25, 2009 at 04:40:12PM +0800, Liu Yu wrote: > For example booke has a code template for > jumping to and returning from interrupt handlers: > > bl transfer > .long handler_addr > .long ret_addr > > when call transfer, it never return but > in transfer assembly code it will read the handler_addr > and ultimately call the handler. > Gdb doesn't know that and treat it as a normal function call. > so gdb put a software breakpoint instruction at handler_addr, > in order to get trap there when return from transfer. > > Then guest will read software breakpoint as handler_addr and jump to there.. > > I'm not sure if x86 suffer this kind of issue. > Is there any way to avoid this? You would need to modify GDB to recognize this sort of case with the skip_trampoline_code gdbarch method. -Nathan -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
