cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

timers.py (1850B)

      1# -*- coding: utf-8 -*-
      2# GDB debugging support
      3#
      4# Copyright 2017 Linaro Ltd
      5#
      6# Author: Alex Bennée <alex.bennee@linaro.org>
      7#
      8# This work is licensed under the terms of the GNU GPL, version 2 or later.
      9# See the COPYING file in the top-level directory.
     10#
     11# SPDX-License-Identifier: GPL-2.0-or-later
     12
     13# 'qemu timers' -- display the current timerlists
     14
     15import gdb
     16
     17class TimersCommand(gdb.Command):
     18    '''Display the current QEMU timers'''
     19
     20    def __init__(self):
     21        'Register the class as a gdb command'
     22        gdb.Command.__init__(self, 'qemu timers', gdb.COMMAND_DATA,
     23                             gdb.COMPLETE_NONE)
     24
     25    def dump_timers(self, timer):
     26        "Follow a timer and recursively dump each one in the list."
     27        # timer should be of type QemuTimer
     28        gdb.write("    timer %s/%s (cb:%s,opq:%s)\n" % (
     29            timer['expire_time'],
     30            timer['scale'],
     31            timer['cb'],
     32            timer['opaque']))
     33
     34        if int(timer['next']) > 0:
     35            self.dump_timers(timer['next'])
     36
     37
     38    def process_timerlist(self, tlist, ttype):
     39        gdb.write("Processing %s timers\n" % (ttype))
     40        gdb.write("  clock %s is enabled:%s, last:%s\n" % (
     41            tlist['clock']['type'],
     42            tlist['clock']['enabled'],
     43            tlist['clock']['last']))
     44        if int(tlist['active_timers']) > 0:
     45            self.dump_timers(tlist['active_timers'])
     46
     47
     48    def invoke(self, arg, from_tty):
     49        'Run the command'
     50        main_timers = gdb.parse_and_eval("main_loop_tlg")
     51
     52        # This will break if QEMUClockType in timer.h is redfined
     53        self.process_timerlist(main_timers['tl'][0], "Realtime")
     54        self.process_timerlist(main_timers['tl'][1], "Virtual")
     55        self.process_timerlist(main_timers['tl'][2], "Host")
     56        self.process_timerlist(main_timers['tl'][3], "Virtual RT")