extern volatile perfCallback perfIntHook;
extern void panic_i386_backtrace(void *, int, const char *, boolean_t, x86_saved_state_t *);
#if MACH_KDP
extern boolean_t kdp_i386_trap(
unsigned int,
extern volatile perfCallback perfIntHook;
extern void panic_i386_backtrace(void *, int, const char *, boolean_t, x86_saved_state_t *);
#if MACH_KDP
extern boolean_t kdp_i386_trap(
unsigned int,