scripts/qemu-gdb/timers.py: new helper to dump timer state
This introduces the qemu-gdb command "qemu timers" which will dump the
state of the main timers in the system.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/scripts/qemu-gdb.py b/scripts/qemu-gdb.py
index d58213e..690827e 100644
--- a/scripts/qemu-gdb.py
+++ b/scripts/qemu-gdb.py
@@ -26,7 +26,7 @@
sys.path.append(os.path.dirname(__file__))
-from qemugdb import aio, mtree, coroutine, tcg
+from qemugdb import aio, mtree, coroutine, tcg, timers
class QemuCommand(gdb.Command):
'''Prefix for QEMU debug support commands'''
@@ -39,6 +39,7 @@
mtree.MtreeCommand()
aio.HandlersCommand()
tcg.TCGLockStatusCommand()
+timers.TimersCommand()
coroutine.CoroutineSPFunction()
coroutine.CoroutinePCFunction()
diff --git a/scripts/qemugdb/timers.py b/scripts/qemugdb/timers.py
new file mode 100644
index 0000000..be71a00
--- /dev/null
+++ b/scripts/qemugdb/timers.py
@@ -0,0 +1,54 @@
+#!/usr/bin/python
+# GDB debugging support
+#
+# Copyright 2017 Linaro Ltd
+#
+# Author: Alex Bennée <alex.bennee@linaro.org>
+#
+# This work is licensed under the terms of the GNU GPL, version 2. See
+# the COPYING file in the top-level directory.
+
+# 'qemu timers' -- display the current timerlists
+
+import gdb
+
+class TimersCommand(gdb.Command):
+ '''Display the current QEMU timers'''
+
+ def __init__(self):
+ 'Register the class as a gdb command'
+ gdb.Command.__init__(self, 'qemu timers', gdb.COMMAND_DATA,
+ gdb.COMPLETE_NONE)
+
+ def dump_timers(self, timer):
+ "Follow a timer and recursively dump each one in the list."
+ # timer should be of type QemuTimer
+ gdb.write(" timer %s/%s (cb:%s,opq:%s)\n" % (
+ timer['expire_time'],
+ timer['scale'],
+ timer['cb'],
+ timer['opaque']))
+
+ if int(timer['next']) > 0:
+ self.dump_timers(timer['next'])
+
+
+ def process_timerlist(self, tlist, ttype):
+ gdb.write("Processing %s timers\n" % (ttype))
+ gdb.write(" clock %s is enabled:%s, last:%s\n" % (
+ tlist['clock']['type'],
+ tlist['clock']['enabled'],
+ tlist['clock']['last']))
+ if int(tlist['active_timers']) > 0:
+ self.dump_timers(tlist['active_timers'])
+
+
+ def invoke(self, arg, from_tty):
+ 'Run the command'
+ main_timers = gdb.parse_and_eval("main_loop_tlg")
+
+ # This will break if QEMUClockType in timer.h is redfined
+ self.process_timerlist(main_timers['tl'][0], "Realtime")
+ self.process_timerlist(main_timers['tl'][1], "Virtual")
+ self.process_timerlist(main_timers['tl'][2], "Host")
+ self.process_timerlist(main_timers['tl'][3], "Virtual RT")
