xnu-2422.1.72.tar.gz

[apple/xnu.git] / tools / lldbmacros / scheduler.py

diff --git a/tools/lldbmacros/scheduler.py b/tools/lldbmacros/scheduler.py
new file mode 100644 (file)
index 0000000..cf6baa3
--- /dev/null
+++ b/tools/lldbmacros/scheduler.py
@@ -0,0 +1,63 @@
+from xnu import *
+from utils import *
+from process import *
+
+# TODO: write scheduler related macros here
+
+# Macro: showinterrupts
+@lldb_command('showinterrupts')
+def ShowInterrupts(cmd_args=None):
+    """ Prints IRQ, IPI and TMR counts for each CPU
+    """
+    bcdata = kern.GetValueFromAddress(kern.GetLoadAddressForSymbol('BootCpuData'), 'cpu_data_t *')
+    print "CPU 0 IRQ: {:d}\n".format(bcdata.cpu_stat.irq_ex_cnt)
+    print "CPU 0 IPI: {:d}\n".format(bcdata.cpu_stat.ipi_cnt)
+    print "CPU 0 TMR: {:d}\n".format(bcdata.cpu_stat.timer_cnt)
+    if (kern.globals.machine_info.physical_cpu == 2):
+        if kern.arch == 'arm':
+            cdentries = kern.GetValueFromAddress(kern.GetLoadAddressForSymbol('CpuDataEntries') + 20, 'uintptr_t *')
+            cpu_data_entry = Cast(dereference(cdentries), 'cpu_data_t *')
+            print "CPU 1 IRQ: {:d}\n".format(cpu_data_entry.cpu_stat.irq_ex_cnt)
+            print "CPU 1 IPI: {:d}\n".format(cpu_data_entry.cpu_stat.ipi_cnt)
+            print "CPU 1 TMR: {:d}\n".format(cpu_data_entry.cpu_stat.timer_cnt)
+
+# EndMacro: showinterrupts
+
+# Macro: showactiveinterrupts
+@lldb_command('showactiveinterrupts')
+def ShowActiveInterrupts(cmd_args=None):
+    """  Prints the interrupts that are unmasked & active with the Interrupt Controller
+         Usage: showactiveinterrupts <address of Interrupt Controller object>
+    """
+    if not cmd_args:
+        print "No arguments passed"
+        print ShowActiveInterrupts.__doc__
+        return False
+    aic = kern.GetValueFromAddress(cmd_args[0], 'AppleInterruptController *')
+    if not aic:
+        print "unknown arguments:", str(cmd_args)
+        return False
+
+    aic_base = unsigned(aic._aicBaseAddress)
+    current_interrupt = 0
+    aic_imc_base = aic_base + 0x4180
+    aic_him_offset = 0x80
+    current_pointer = aic_imc_base
+    unmasked = dereference(kern.GetValueFromAddress(current_pointer, 'uintptr_t *'))
+    active = dereference(kern.GetValueFromAddress(current_pointer + aic_him_offset, 'uintptr_t *'))
+    group_count = 0
+    mask = 1
+    while current_interrupt < 192:
+        if (((unmasked & mask) == 0) and (active & mask)):
+            print "Interrupt {:d} unmasked and active\n".format(current_interrupt)
+        current_interrupt = current_interrupt + 1
+        if (current_interrupt % 32 == 0):
+            mask = 1
+            group_count = group_count + 1
+            unmasked = dereference(kern.GetValueFromAddress(current_pointer + (4 * group_count), 'uintptr_t *'))
+            active = dereference(kern.GetValueFromAddress((current_pointer + aic_him_offset) + (4 * group_count), 'uintptr_t *'))
+        else:
+            mask = mask << 1
+    
+# EndMacro: showactiveinterrupts
+