__private_extern__ kern_return_t
chudxnu_get_cpu_interrupt_counters(int cpu, rupt_counters_t *rupts)
{
if(cpu < 0 || (unsigned int)cpu >= real_ncpus) { // sanity check
return KERN_FAILURE;
}
if(rupts) {
boolean_t oldlevel = ml_set_interrupts_enabled(FALSE);
cpu_data_t *per_proc;
per_proc = cpu_data_ptr[cpu];
// For now, we'll call an NMI a 'reset' interrupt
rupts->hwResets = per_proc->cpu_hwIntCnt[T_NMI];
rupts->hwMachineChecks = per_proc->cpu_hwIntCnt[T_MACHINE_CHECK];
rupts->hwDSIs = 0;
rupts->hwISIs = 0;
// we could accumulate 0x20-0x7f, but that'd likely overflow...
rupts->hwExternals = 0;
// This appears to be wrong.
rupts->hwAlignments = 0; //per_proc->cpu_hwIntCnt[0x11];
rupts->hwPrograms = 0;
rupts->hwFloatPointUnavailable = per_proc->cpu_hwIntCnt[T_NO_FPU];
// osfmk/i386/mp.h
rupts->hwDecrementers = per_proc->cpu_hwIntCnt[LAPIC_VECTOR(TIMER)];
// LAPIC_ERROR == IO ERROR??
rupts->hwIOErrors = per_proc->cpu_hwIntCnt[LAPIC_VECTOR(ERROR)];
// accumulate all system call types
// osfmk/mach/i386/syscall_sw.h
rupts->hwSystemCalls = per_proc->cpu_hwIntCnt[UNIX_INT] +
per_proc->cpu_hwIntCnt[MACH_INT] +
per_proc->cpu_hwIntCnt[MACHDEP_INT] +
per_proc->cpu_hwIntCnt[DIAG_INT];
rupts->hwTraces = per_proc->cpu_hwIntCnt[T_DEBUG]; // single steps == traces??
rupts->hwFloatingPointAssists = 0;
// osfmk/i386/mp.h
rupts->hwPerformanceMonitors =
per_proc->cpu_hwIntCnt[LAPIC_VECTOR(PERFCNT)];
rupts->hwAltivecs = 0;
rupts->hwInstBreakpoints = per_proc->cpu_hwIntCnt[T_INT3];
rupts->hwSystemManagements = 0;
rupts->hwAltivecAssists = 0;
rupts->hwThermal = per_proc->cpu_hwIntCnt[LAPIC_VECTOR(THERMAL)];
rupts->hwSoftPatches = 0;
rupts->hwMaintenances = 0;
// Watchpoint == instrumentation
rupts->hwInstrumentations = per_proc->cpu_hwIntCnt[T_WATCHPOINT];
ml_set_interrupts_enabled(oldlevel);
return KERN_SUCCESS;
} else {
return KERN_FAILURE;
}
}
if (lapic_error_time_threshold == 0 && cpu_number() == 0) {
nanoseconds_to_absolutetime(NSEC_PER_SEC >> 2, &lapic_error_time_threshold);
if (!PE_parse_boot_argn("lapic_dont_panic", &lapic_dont_panic, sizeof(lapic_dont_panic))) {
lapic_dont_panic = FALSE;
}
}
/* Set flat delivery model, logical processor id */
LAPIC_WRITE(DFR, LAPIC_DFR_FLAT);
LAPIC_WRITE(LDR, (get_cpu_number()) << LAPIC_LDR_SHIFT);
/* Accept all */
LAPIC_WRITE(TPR, 0);
LAPIC_WRITE(SVR, LAPIC_VECTOR(SPURIOUS) | LAPIC_SVR_ENABLE);
/* ExtINT */
if (get_cpu_number() == master_cpu) {
value = LAPIC_READ(LVT_LINT0);
value &= ~LAPIC_LVT_MASKED;
value |= LAPIC_LVT_DM_EXTINT;
LAPIC_WRITE(LVT_LINT0, value);
}
/* Timer: unmasked, one-shot */
LAPIC_WRITE(LVT_TIMER, LAPIC_VECTOR(TIMER));
/* Perfmon: unmasked */
LAPIC_WRITE(LVT_PERFCNT, LAPIC_VECTOR(PERFCNT));
