diff options
Diffstat (limited to 'scripts/qemugdb')
| -rw-r--r-- | scripts/qemugdb/__init__.py | 28 | ||||
| -rw-r--r-- | scripts/qemugdb/mtree.py | 82 |
2 files changed, 110 insertions, 0 deletions
diff --git a/scripts/qemugdb/__init__.py b/scripts/qemugdb/__init__.py new file mode 100644 index 0000000000..969f552b26 --- /dev/null +++ b/scripts/qemugdb/__init__.py @@ -0,0 +1,28 @@ +#!/usr/bin/python + +# GDB debugging support +# +# Copyright (c) 2015 Linaro Ltd +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, see +# <http://www.gnu.org/licenses/gpl-2.0.html> +# + +# We don't need to do anything in our init file currently. + +""" +Support routines for debugging QEMU under GDB +""" + +__license__ = "GPL version 2 or (at your option) any later version" diff --git a/scripts/qemugdb/mtree.py b/scripts/qemugdb/mtree.py new file mode 100644 index 0000000000..06011c30cc --- /dev/null +++ b/scripts/qemugdb/mtree.py @@ -0,0 +1,82 @@ +#!/usr/bin/python + +# GDB debugging support +# +# Copyright 2012 Red Hat, Inc. and/or its affiliates +# +# Authors: +# Avi Kivity <avi@redhat.com> +# +# This work is licensed under the terms of the GNU GPL, version 2. See +# the COPYING file in the top-level directory. +# +# Contributions after 2012-01-13 are licensed under the terms of the +# GNU GPL, version 2 or (at your option) any later version. + +# 'qemu mtree' -- display the memory hierarchy + +import gdb + +def isnull(ptr): + return ptr == gdb.Value(0).cast(ptr.type) + +def int128(p): + return long(p['lo']) + (long(p['hi']) << 64) + +class MtreeCommand(gdb.Command): + '''Display the memory tree hierarchy''' + def __init__(self): + gdb.Command.__init__(self, 'qemu mtree', gdb.COMMAND_DATA, + gdb.COMPLETE_NONE) + self.queue = [] + def invoke(self, arg, from_tty): + self.seen = set() + self.queue_root('address_space_memory') + self.queue_root('address_space_io') + self.process_queue() + def queue_root(self, varname): + ptr = gdb.parse_and_eval(varname)['root'] + self.queue.append(ptr) + def process_queue(self): + while self.queue: + ptr = self.queue.pop(0) + if long(ptr) in self.seen: + continue + self.print_item(ptr) + def print_item(self, ptr, offset = gdb.Value(0), level = 0): + self.seen.add(long(ptr)) + addr = ptr['addr'] + addr += offset + size = int128(ptr['size']) + alias = ptr['alias'] + klass = '' + if not isnull(alias): + klass = ' (alias)' + elif not isnull(ptr['ops']): + klass = ' (I/O)' + elif bool(ptr['ram']): + klass = ' (RAM)' + gdb.write('%s%016x-%016x %s%s (@ %s)\n' + % (' ' * level, + long(addr), + long(addr + (size - 1)), + ptr['name'].string(), + klass, + ptr, + ), + gdb.STDOUT) + if not isnull(alias): + gdb.write('%s alias: %s@%016x (@ %s)\n' % + (' ' * level, + alias['name'].string(), + ptr['alias_offset'], + alias, + ), + gdb.STDOUT) + self.queue.append(alias) + subregion = ptr['subregions']['tqh_first'] + level += 1 + while not isnull(subregion): + self.print_item(subregion, addr, level) + subregion = subregion['subregions_link']['tqe_next'] + |