+ uint64_t curpos, i, j;
+ uint64_t selector, data;
+ uint64_t currNap, durNap;
+ x86_saved_state64_t *regs;
+
+ assert(is_saved_state64(state));
+ regs = saved_state64(state);
+
+ if (!(dgWork.dgFlags & enaDiagSCs))
+ return 0; /* If not enabled, cause an exception */
+
+ selector = regs->rdi;
+
+ switch (selector) { /* Select the routine */
+ case dgRuptStat: /* Suck Interruption statistics */
+ data = regs->rsi; /* Get the number of processors */
+
+ if (data == 0) { /* If no location is specified for data, clear all
+ * counts
+ */
+ for (i = 0; i < real_ncpus; i++) { /* Cycle through
+ * processors */
+ for (j = 0; j < 256; j++)
+ cpu_data_ptr[i]->cpu_hwIntCnt[j] = 0;
+ }
+
+ lastRuptClear = mach_absolute_time(); /* Get the time of clear */
+ return 1; /* Normal return */
+ }
+
+ (void) copyout((char *) &real_ncpus, data, sizeof(real_ncpus)); /* Copy out number of
+ * processors */
+
+ currNap = mach_absolute_time(); /* Get the time now */
+ durNap = currNap - lastRuptClear; /* Get the last interval
+ * duration */
+ if (durNap == 0)
+ durNap = 1; /* This is a very short time, make it
+ * bigger */
+
+ curpos = data + sizeof(real_ncpus); /* Point to the next
+ * available spot */
+
+ for (i = 0; i < real_ncpus; i++) { /* Move 'em all out */
+ (void) copyout((char *) &durNap, curpos, 8); /* Copy out the time
+ * since last clear */
+ (void) copyout((char *) &cpu_data_ptr[i]->cpu_hwIntCnt, curpos + 8, 256 * sizeof(uint32_t)); /* Copy out interrupt
+ * data for this
+ * processor */
+ curpos = curpos + (256 * sizeof(uint32_t) + 8); /* Point to next out put
+ * slot */
+ }
+ break;
+
+ default: /* Handle invalid ones */
+ return 0; /* Return an exception */
+
+ }
+
+ return 1; /* Normal non-ast check return */