diff options
author | 2016-06-03 03:33:22 +0000 | |
---|---|---|
committer | 2016-06-03 03:33:23 +0000 | |
commit | da27230f80795d0028333713f036d44c53cb0e68 (patch) | |
tree | b3d379eaf000adf72b36cb01cdf4d79c3e3f064c /qemu/scripts/qemugdb/mtree.py | |
parent | 0e68cb048bb8aadb14675f5d4286d8ab2fc35449 (diff) | |
parent | 437fd90c0250dee670290f9b714253671a990160 (diff) |
Merge "These changes are the raw update to qemu-2.6."
Diffstat (limited to 'qemu/scripts/qemugdb/mtree.py')
-rw-r--r-- | qemu/scripts/qemugdb/mtree.py | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/qemu/scripts/qemugdb/mtree.py b/qemu/scripts/qemugdb/mtree.py new file mode 100644 index 000000000..cc8131c2e --- /dev/null +++ b/qemu/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 int(p['lo']) + (int(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 int(ptr) in self.seen: + continue + self.print_item(ptr) + def print_item(self, ptr, offset = gdb.Value(0), level = 0): + self.seen.add(int(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, + int(addr), + int(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'] + |