[Crash-utility] ARM panic registers

Hi Dave et. al., For ARM {k,net}dumps panic tasks we go to great lengths to locate the prstatus data (crash registers) in netdump.c:get_netdump_regs_arm() In fact we rely so hard on them having been read from the CORE ELF notes and put in either nd->nt_prstatus_percpu or nd->nt_prstatus that there's a segfault if that's not the case. The thing is, once we've gone through all that trouble of finding them, and making sure bt->machdep points to them, arm.c:arm_get_stack_frame() is called, which ends up getting the crash registers from machdep->machspec->crash_task_regs anyway. These are read directly from within the PT_LOAD segments ignoring the contents any ELF notes. I suggest changing get_netdump_regs_arm() to: static void get_netdump_regs_arm(struct bt_info *bt, ulong *eip, ulong *esp) { machdep->get_stack_frame(bt, eip, esp); } If we're not going to use the ELF notes, why fail if they're not there? Regards Per