tools/lldbmacros/scheduler.py

   1 from xnu import *
   2 from utils import *
   3 from process import *
   4
   5 # TODO: write scheduler related macros here
   6
   7 # Macro: showinterrupts
   8 @lldb_command('showinterrupts')
   9 def ShowInterrupts(cmd_args=None):
  10     """ Prints IRQ, IPI and TMR counts for each CPU
  11     """
  12     bcdata = kern.GetValueFromAddress(kern.GetLoadAddressForSymbol('BootCpuData'), 'cpu_data_t *')
  13     print "CPU 0 IRQ: {:d}\n".format(bcdata.cpu_stat.irq_ex_cnt)
  14     print "CPU 0 IPI: {:d}\n".format(bcdata.cpu_stat.ipi_cnt)
  15     print "CPU 0 TMR: {:d}\n".format(bcdata.cpu_stat.timer_cnt)
  16     if (kern.globals.machine_info.physical_cpu == 2):
  17         if kern.arch == 'arm':
  18             cdentries = kern.GetValueFromAddress(kern.GetLoadAddressForSymbol('CpuDataEntries') + 20, 'uintptr_t *')
  19             cpu_data_entry = Cast(dereference(cdentries), 'cpu_data_t *')
  20             print "CPU 1 IRQ: {:d}\n".format(cpu_data_entry.cpu_stat.irq_ex_cnt)
  21             print "CPU 1 IPI: {:d}\n".format(cpu_data_entry.cpu_stat.ipi_cnt)
  22             print "CPU 1 TMR: {:d}\n".format(cpu_data_entry.cpu_stat.timer_cnt)
  23
  24 # EndMacro: showinterrupts
  25
  26 # Macro: showactiveinterrupts
  27 @lldb_command('showactiveinterrupts')
  28 def ShowActiveInterrupts(cmd_args=None):
  29     """  Prints the interrupts that are unmasked & active with the Interrupt Controller
  30          Usage: showactiveinterrupts <address of Interrupt Controller object>
  31     """
  32     if not cmd_args:
  33         print "No arguments passed"
  34         print ShowActiveInterrupts.__doc__
  35         return False
  36     aic = kern.GetValueFromAddress(cmd_args[0], 'AppleInterruptController *')
  37     if not aic:
  38         print "unknown arguments:", str(cmd_args)
  39         return False
  40
  41     aic_base = unsigned(aic._aicBaseAddress)
  42     current_interrupt = 0
  43     aic_imc_base = aic_base + 0x4180
  44     aic_him_offset = 0x80
  45     current_pointer = aic_imc_base
  46     unmasked = dereference(kern.GetValueFromAddress(current_pointer, 'uintptr_t *'))
  47     active = dereference(kern.GetValueFromAddress(current_pointer + aic_him_offset, 'uintptr_t *'))
  48     group_count = 0
  49     mask = 1
  50     while current_interrupt < 192:
  51         if (((unmasked & mask) == 0) and (active & mask)):
  52             print "Interrupt {:d} unmasked and active\n".format(current_interrupt)
  53         current_interrupt = current_interrupt + 1
  54         if (current_interrupt % 32 == 0):
  55             mask = 1
  56             group_count = group_count + 1
  57             unmasked = dereference(kern.GetValueFromAddress(current_pointer + (4 * group_count), 'uintptr_t *'))
  58             active = dereference(kern.GetValueFromAddress((current_pointer + aic_him_offset) + (4 * group_count), 'uintptr_t *'))
  59         else:
  60             mask = mask << 1
  61
  62 # EndMacro: showactiveinterrupts
  63