1#!/usr/bin/python 2# -*- coding: utf-8 -*- 3# GDB debugging support 4# 5# Copyright 2017 Linaro Ltd 6# 7# Author: Alex Bennée <alex.bennee@linaro.org> 8# 9# This work is licensed under the terms of the GNU GPL, version 2. See 10# the COPYING file in the top-level directory. 11 12# 'qemu timers' -- display the current timerlists 13 14import gdb 15 16class TimersCommand(gdb.Command): 17 '''Display the current QEMU timers''' 18 19 def __init__(self): 20 'Register the class as a gdb command' 21 gdb.Command.__init__(self, 'qemu timers', gdb.COMMAND_DATA, 22 gdb.COMPLETE_NONE) 23 24 def dump_timers(self, timer): 25 "Follow a timer and recursively dump each one in the list." 26 # timer should be of type QemuTimer 27 gdb.write(" timer %s/%s (cb:%s,opq:%s)\n" % ( 28 timer['expire_time'], 29 timer['scale'], 30 timer['cb'], 31 timer['opaque'])) 32 33 if int(timer['next']) > 0: 34 self.dump_timers(timer['next']) 35 36 37 def process_timerlist(self, tlist, ttype): 38 gdb.write("Processing %s timers\n" % (ttype)) 39 gdb.write(" clock %s is enabled:%s, last:%s\n" % ( 40 tlist['clock']['type'], 41 tlist['clock']['enabled'], 42 tlist['clock']['last'])) 43 if int(tlist['active_timers']) > 0: 44 self.dump_timers(tlist['active_timers']) 45 46 47 def invoke(self, arg, from_tty): 48 'Run the command' 49 main_timers = gdb.parse_and_eval("main_loop_tlg") 50 51 # This will break if QEMUClockType in timer.h is redfined 52 self.process_timerlist(main_timers['tl'][0], "Realtime") 53 self.process_timerlist(main_timers['tl'][1], "Virtual") 54 self.process_timerlist(main_timers['tl'][2], "Host") 55 self.process_timerlist(main_timers['tl'][3], "Virtual RT") 56